阅读说明：本技术 热交换器 (Heat exchanger ) 是由 葛西胜哉 中泽武马 于 2020-03-25 设计创作，主要内容包括：在热交换器(10)中,交替地层叠有多个隔板(15)和多个框架(25、55)。在框架(25、55)的框部(30、60)形成有凸条部(34、64)和凹条部(35、65)。在热交换器(10)中,相邻的框架(25、55)中的一者的凸条部(34、64)嵌入另一者的凹条部(35、65)。隔板(15)被与该隔板(15)相邻的第一框架(25)和第二框架(55)中的一者的凸条部(34、64)与另一者的凹条部(35、65)夹住。(In the heat exchanger (10), a plurality of separators (15) and a plurality of frames (25, 55) are alternately stacked. The frame portions (30, 60) of the frames (25, 55) are formed with raised strips (34, 64) and recessed strips (35, 65). In the heat exchanger (10), the raised strip portions (34, 64) of one of the adjacent frames (25, 55) are fitted into the recessed strip portions (35, 65) of the other. The partition plate (15) is sandwiched between the raised strip portions (34, 64) of one of the first frame (25) and the second frame (55) adjacent to the partition plate (15) and the recessed strip portions (35, 65) of the other.)

1. A heat exchanger including a plurality of partition members (15) in a flat sheet shape and pitch holding members (25, 55) that are alternately stacked on the partition members (15) and that hold pitches between the adjacent partition members (15), a first flow path (21) and a second flow path (51) being alternately formed with the partition members (15) therebetween, characterized in that:

the space holding member (25, 55) has a frame portion (30, 60) extending along the peripheral edge of the partition member (15),

the frame portion (30, 60) has a convex portion (34, 64) and a concave portion (35, 65), the convex portion (34, 64) is formed on a surface of the partition member (15) located in one of the stacking directions and extends in the extending direction of the frame portion (30, 60), the concave portion (35, 65) is formed on a surface of the partition member (15) located in the other of the stacking directions and extends in the extending direction of the frame portion (30, 60),

the raised strip portions (34, 64) of one of the adjacent space holding members (25, 55) are fitted into the recessed strip portions (35, 65) of the other,

the partition member (15) is sandwiched between the raised strip portions (34, 64) of one of the two spacing members (25, 55) adjacent to the partition member (15) and the recessed strip portions (35, 65) of the other.

2. The heat exchanger of claim 1, wherein:

the raised strip portions (34, 64) and the recessed strip portions (35, 65) are formed on the outermost peripheral portions of the frame portions (30, 60), respectively.

3. The heat exchanger of claim 1 or 2, wherein:

the frame portion (30, 60) has a connecting opening (22, 52) and an auxiliary rib (32, 62),

the connection opening (22, 52) communicates the first channel (21) or the second channel (51) surrounded by the frame (30, 60) with the outside of the frame (30, 60),

the auxiliary rib (32, 62) extends along the opening (22, 52) for connection and faces the frame portion (30, 60) of the other adjacent distance maintaining member (25, 55),

the partition member (15) is sandwiched between the auxiliary rib (32, 62) of one of the two distance-maintaining members (25, 55) adjacent to the partition member (15) and the frame portion (30, 60) of the other.

4. A heat exchanger including a plurality of partition members (15) in a flat sheet shape and pitch holding members (25, 55) that are alternately stacked on the partition members (15) and that hold pitches between the adjacent partition members (15), a first flow path (21) and a second flow path (51) being alternately formed with the partition members (15) therebetween, characterized in that:

the space holding member (25, 55) has a frame portion (30, 60) extending along the peripheral edge of the partition member (15),

the frame portion (30, 60) has a connecting opening (22, 52) and an auxiliary rib (32, 62),

the connection opening (22, 52) communicates the first channel (21) or the second channel (51) surrounded by the frame (30, 60) with the outside of the frame (30, 60),

the auxiliary rib (32, 62) extends along the opening (22, 52) for connection and faces the frame portion (30, 60) of the other adjacent distance maintaining member (25, 55),

the partition member (15) is sandwiched between the auxiliary rib (32, 62) of one of the two distance-maintaining members (25, 55) adjacent to the partition member (15) and the frame portion (30, 60) of the other.

5. The heat exchanger of claim 3 or 4, wherein:

the frame portion (30, 60) of the space holding member (25, 55) has an outer rib (33, 63), the outer rib (33, 63) protrudes from a surface facing the auxiliary rib (32, 62) of the adjacent other space holding member (25, 55) and extends along the outer side of the auxiliary rib (32, 62),

the protruding end surface of the outer rib (33, 63) of the space holding member (25, 55) is flush with the surface on the opposite side of the auxiliary rib (32, 62) of the space holding member (25, 55) adjacent in the protruding direction of the outer rib (33, 63) from the partition member (15).

6. The heat exchanger of claim 3 or 4, wherein:

the frame portion (30, 60) of the space holding member (25, 55) has an outer rib (33, 63), and the outer rib (33, 63) extends along the outer periphery of the space holding member (25, 55) over the entire periphery of the space holding member (25, 55).

7. The heat exchanger of claim 3 or 4, wherein:

the frame portion (30, 60) of the space holding member (25, 55) has an outer rib (33, 63), and the outer rib (33, 63) extends along the connection opening (22, 52) and is located outside the auxiliary rib (32, 62) as a whole.

8. The heat exchanger of any one of claims 3 to 7, wherein:

the auxiliary ribs (32, 62) of the space holding members (25, 55) have linear protrusions (36, 66), the linear protrusions (36, 66) extending along the auxiliary ribs (32, 62) and protruding toward the other space holding members (25, 55) facing the auxiliary ribs (32, 62),

linear recessed portions (37, 67) into which the linear protruding portions (36, 66) of the adjacent other pitch-maintaining members (25, 55) are fitted are formed in the frame portions (30, 60) of the pitch-maintaining members (25, 55).

9. The heat exchanger of claim 8, wherein:

the partition member (15) is sandwiched between the linear convex portion (36, 66) of one of the two pitch holding members (25, 55) adjacent to the partition member (15) and the linear concave portion (37, 67) of the other.

10. The heat exchanger of any one of claims 1 to 9, wherein:

the side surface formed by the outer peripheral surfaces of the stacked plurality of distance-maintaining members (25, 55) is a flat surface.

11. A heat exchanger including a plurality of partition members (15) in a flat sheet shape and pitch holding members (25, 55) that are alternately stacked on the partition members (15) and that hold pitches between the adjacent partition members (15), a first flow path (21) and a second flow path (51) being alternately formed with the partition members (15) therebetween, characterized in that:

the space holding member (25, 55) has a frame portion (30, 60) extending along the peripheral edge of the partition member (15),

a first space holding member (25) which is the space holding member forming the first flow path (21) includes a first connection-purpose opening (22) and a first inner rib (40),

the first communication opening (22) is formed in the frame portion (30) of the first pitch holding member (25), and communicates the first flow path (21) surrounded by the frame portion (30) with the outside of the frame portion (30),

the first inner rib (40) extends from the first connection-purpose opening (22) in a direction intersecting the first connection-purpose opening (22) and contacts the partition members (15) on both sides of the first space maintaining member (25),

a second space maintaining member (55) which is the space maintaining member forming the second flow path (51) includes a second communication opening (52) and a second inner rib (70),

the second communication opening (52) is formed in the frame portion (60) of the second space holding member (55), and communicates the second channel (51) surrounded by the frame portion (60) with the outside of the frame portion (60),

the second inner rib (70) extends from the second communication opening (52) in a direction intersecting the second communication opening (52) and contacts the partition members (15) on both sides of the second space maintaining member (55),

the first pitch maintaining member (25) further includes first maintaining ribs (41a, 41b), the first maintaining ribs (41a, 41b) intersecting the first inner ribs (40) and extending in a direction of the second inner ribs (70) of the second pitch maintaining member (55), the partition member (15) being sandwiched between the first maintaining ribs (41a, 41b) and the second inner ribs (70) of the second pitch maintaining member (55) located at adjacent positions,

the second pitch maintaining member (55) further includes second maintaining ribs (71a, 71b), the second maintaining ribs (71a, 71b) intersecting the second inner ribs (70) and extending in the direction of the first inner ribs (40) of the first pitch maintaining member (25), the partition member (15) being sandwiched between the second maintaining ribs (71a, 71b) and the first inner ribs (40) of the first pitch maintaining member (25) located at adjacent positions.

12. The heat exchanger of claim 11, wherein:

the first pitch maintaining member (25) includes the first maintaining rib (41a) on one side in contact with one of the two partition members (15) adjacent to the first pitch maintaining member (25) and the first maintaining rib (41b) on the other side in contact with the other of the two partition members (15) adjacent to the first pitch maintaining member (25),

the second space maintaining member (55) includes the second maintaining rib (71a) on one side contacting one of the two partitioning members (15) adjacent to the second space maintaining member (55) and the second maintaining rib (71b) on the other side contacting the other of the two partitioning members (15) adjacent to the second space maintaining member (55).

13. The heat exchanger of claim 12, wherein:

the first pitch maintaining member (25) includes a first pillar portion (42) connected to the first maintaining rib (41a) on one side and the first maintaining rib (41b) on the other side,

the second space maintaining member (55) includes a second pillar portion (72) connected to the second maintaining rib (71a) on one side and the second maintaining rib (71b) on the other side.

14. The heat exchanger of claim 13, wherein:

in the first space maintaining member (25), a plurality of the first inner ribs (40) are provided in parallel with each other,

in the first space maintaining member (25), between the adjacent first inner ribs (40),

the first retaining rib (41a) of one side protrudes from one of the adjacent first inner ribs (40) toward the other,

the first holding rib (41b) of the other side protrudes from the other of the adjacent first inner ribs (40) toward one,

the first pillar portion (42) is connected to a protruding end of the first holding rib (41a) on one side and a protruding end of the first holding rib (41b) on the other side,

in the second space maintaining member (55), a plurality of the second inner ribs (70) are provided in parallel with each other,

in the second space maintaining members (55), between the adjacent second inner ribs (70),

the second retaining rib (71a) of one side protrudes from one of the second inner side ribs (70) adjacent to the other side toward the other side,

the second holding rib (71b) of the other side protrudes from the other of the second inner side ribs (70) adjacent thereto toward one,

the second pillar portion (72) is connected to a protruding end of the second holding rib (71a) on one side and a protruding end of the second holding rib (71b) on the other side.

15. The heat exchanger of claim 12 or 13, wherein:

in the first space maintaining member (25), a plurality of the first inner ribs (40) are provided in parallel with each other,

between adjacent first inner ribs (40) of the first space maintaining member (25),

the first holding rib (41a) of one side protruding from one of the adjacent first inner ribs (40) toward the other and the first holding rib (41b) of the other side protruding from one of the adjacent first inner ribs (40) toward the other are alternately provided in the elongation direction of one of the adjacent first inner ribs (40),

the first holding rib (41b) of the other side protruding toward one from the other of the adjacent first inner ribs (40) and the first holding rib (41a) of the one side protruding toward one from the other of the adjacent first inner ribs (40) are alternately provided in the elongation direction of the other of the adjacent first inner ribs (40),

in the second space maintaining member (55), a plurality of the second inner ribs (70) are provided in parallel with each other,

between the adjacent second inner ribs (70) of the second space maintaining members (55),

the second holding rib (71a) of one side protruding from one of the adjacent second inner ribs (70) toward the other and the second holding rib (71b) of the other side protruding from one of the adjacent second inner ribs (70) toward the other are alternately provided in the elongation direction of one of the adjacent second inner ribs (70),

the second holding rib (71b) of the other side protruding toward one from the other of the adjacent second inner ribs (70) and the second holding rib (71a) of the one side protruding toward one from the other of the adjacent second inner ribs (70) are alternately provided in the elongation direction of the other of the adjacent second inner ribs (70).

16. The heat exchanger of claim 11, wherein:

the first holding rib (41b) of the first pitch-retaining member (25) is in contact with one of the two partition members (15) adjacent to the first pitch-retaining member (25),

the first pitch maintaining member (25) includes a first pillar portion (42), the first pillar portion (42) protruding from the first maintaining rib (41b) and contacting the protruding end with the other of the two partition members (15) adjacent to the first pitch maintaining member (25),

the second holding rib (71b) of the second space maintaining member (55) is in contact with one of the two partition members (15) adjacent to the second space maintaining member (55),

the second space maintaining member (55) includes a second pillar portion (72), and the second pillar portion (72) protrudes from the second maintaining rib (71b) and a protruding end contacts with the other of the two partition members (15) adjacent to the second space maintaining member (55).

17. The heat exchanger of any one of claims 11 to 16, wherein:

the first space maintaining member (25) includes a first flow path inner rib (45) and first support ribs (46a, 46b),

the first flow channel inner rib (45) is provided in the first flow channel (21) surrounded by the frame portion (30) of the first pitch holding member (25), and is in contact with two partition members (15) adjacent to the first pitch holding member (25),

the first support ribs (46a, 46b) extend in a direction intersecting the first flow path inner rib (45) and are in contact with one of the partition members (15) located at an adjacent position of the first space maintaining member (25),

the second space maintaining member (55) includes a second flow path inner rib (75) and second support ribs (76a, 76b),

the second flow channel inner ribs (75) are provided in the second flow channel (51) surrounded by the frame portion (60) of the second pitch holding member (55), extend along the first flow channel inner ribs (45) of the first pitch holding member (25), and are in contact with the two partition members (15) adjacent to the second pitch holding member (55),

the second support ribs (76a, 76b) extend in a direction intersecting the second flow path inner rib (75), and contact one of the partition members (15) located adjacent to the second space maintaining member (55).

18. The heat exchanger of claim 1, 4 or 11, wherein:

the frame portion (30, 60) has an outer side portion (33, 63) extending along the periphery of the frame portion (30, 60) and an inner side portion (136, 166) located inside the outer side portion (33, 63) and extending along the outer side portion (33, 63),

the inner side parts (136, 166) of the frame parts (30, 60) sandwich and hold the partition member (15) between the inner side parts (136, 166) and the space holding members (25, 55) located adjacent to the inner side parts (136, 166),

an outer gap (81) is formed between the outer side portion (33, 63) of the frame portion (30, 60) and the space holding member (25, 55) located adjacent to the outer side portion (33, 63).

19. The heat exchanger of claim 18, wherein:

the heat exchanger includes an adhesive layer (85), and the adhesive layer (85) is provided so as to be embedded in the outer gap (81), and bonds the outer side portions (33, 63) of the frame portions (30, 60) to the space holding members (25, 55) located adjacent to the outer side portions (33, 63).

20. The heat exchanger of claim 19, wherein:

the heat exchanger includes a cover layer (86), wherein the cover layer (86) is formed of the same material as the adhesive layer (85), and then the adhesive layer (85) is formed to cover the outer surface of the heat exchanger (10).

21. The heat exchanger of claim 19 or 20, wherein:

the adhesive layer (85) is formed of an adhesive agent cured by ultraviolet irradiation.

22. The heat exchanger of claim 19 or 20, wherein:

the adhesive layer (85) contains an antibacterial component and a mildewproof component.

23. The heat exchanger of any one of claims 19 to 22, wherein:

positioning protrusions (137, 167) and positioning holes (138, 168) are formed in the frame portions (30, 60) of the pitch retaining members (25, 55),

the positioning protrusions (137, 167) protrude from a surface of the partition member (15) located in one of the stacking directions,

the positioning hole (138, 168) is open on the surface located in the other direction and is fitted with the positioning protrusion (137, 167) of the space holding member (25, 55) located at the adjacent position of the frame portion (30, 60),

in the frame portion (30, 60) of the pitch retaining member (25, 55), the positioning protrusion (137, 167) and the surface on which the positioning protrusion (137, 167) is formed are bonded to the pitch retaining member (25, 55) on which the positioning hole (138, 168) into which the positioning protrusion (137, 167) is fitted is formed, by the adhesive layer (85).

Technical Field

The present disclosure relates to a heat exchanger.

Background

Patent document 1 discloses a heat exchange element used in a ventilation apparatus. The heat exchange element is a heat exchanger that exchanges heat between the supply air and the exhaust air. In this heat exchanger, a plurality of resin frames and a plurality of heat transfer plates are alternately stacked. In this heat exchanger, an air flow path on the air supply side and an air flow path on the air discharge side are alternately formed in the stacking direction of the resin frame and the heat transfer plates. Adjacent air flow paths are separated by heat transfer plates. In this heat exchanger, sensible heat and latent heat (moisture) are exchanged between air flowing through the air flow passage on the air supply side and air flowing through the air flow passage on the air discharge side by the heat transfer plates.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2007-100997

Disclosure of Invention

Technical problems to be solved by the invention

In the heat exchanger of patent document 1, the heat transfer plate is bonded to the resin frame with an adhesive. However, the heat transfer plate may peel off from the resin frame due to poor adhesion or aging of the adhesive. Once the heat transfer plate is peeled off from the resin frame, the peeled heat transfer plate may obstruct air circulation.

The purpose of the present disclosure is: the reliability of the heat exchanger is improved.

Technical solution for solving technical problem

The disclosure of the first aspect is directed to a heat exchanger including a plurality of partition members 15 in a flat sheet shape and pitch holding members 25, 55 alternately stacked on the partition members 15 and holding pitches between the adjacent partition members 15, and a first flow path 21 and a second flow path 51 alternately formed with the partition members 15 interposed therebetween. And, characterized in that: the space holding members 25, 55 have frame portions 30, 60 extending along the peripheral edge of the partition member 15, the frame portions 30, 60 have convex portions 34, 64 and concave portions 35, 65, the convex portions 34, 64 are formed on the surface of the partition member 15 located in one of the stacking directions and extend in the extending direction of the frame portions 30, 60, the concave portions 35, 65 are formed on the surface of the partition member 15 located in the other of the stacking directions and extend in the extending direction of the frame portions 30, 60, the convex portions 34, 64 of one of the adjacent space holding members 25, 55 are fitted into the concave portions 35, 65 of the other, and the partition member 15 is configured such that the convex portions 34, 64 of one of the two space holding members 25, 55 adjacent to the partition member 15 and the concave portions 35, 65 of the other are fitted into the convex portions 34, 64 of the other of the two space holding members 25, 55 adjacent to the partition member 15, 65 are clamped.

In the heat exchanger 10 of the first aspect, the partition members 15 and the pitch retaining members 25 and 55 are alternately stacked, and the first flow paths 21 and the second flow paths 51 are alternately formed. In the heat exchanger 10, the fluid flowing through the first flow path 21 and the fluid flowing through the second flow path 51 exchange at least sensible heat by the partition member 15.

In the heat exchanger 10 of the first aspect, the raised strip portions 34, 64 of one of the two adjacent space maintaining members 25, 55 are fitted into the recessed strip portions 35, 65 of the other. The partition member 15 is sandwiched between the concave portions 35, 65 and the convex portions 34, 64 which are fitted to each other. As a result, the partition member 15 can be held by the two pitch holding members 25 and 55 located on both sides of the partition member 15. Further, the gap between the partition member 15 and the space holding members 25 and 55 can be sealed.

According to the first aspect, even when problems such as poor adhesion or deterioration of the adhesive occur, the partition member 15 can be held by the pitch holding members 25 and 55 on both sides of the partition member 15, and the gap between the partition member 15 and the pitch holding members 25 and 55 can be sealed. Further, even if the partition member 15 and the pitch holding members 25 and 55 are not bonded to each other, there is a possibility that the partition member 15 can be held by the pitch holding members 25 and 55 on both sides of the partition member 15, and the gap between the partition member 15 and the pitch holding members 25 and 55 can be sealed.

Therefore, according to the first aspect, it is possible to prevent the partition member 15, which is no longer held by the pitch holding members 25, 55, from obstructing the air flow in advance. Further, according to this aspect, it is possible to prevent air from invading one of the first flow path 21 and the second flow path 51 from the other through the gap between the partition member 15 and the pitch holding members 25, 55. As a result, the reliability of the heat exchanger 10 can be improved.

The disclosure of the second aspect is based on the disclosure of the first aspect, and is characterized in that: the raised strips 34, 64 and the recessed strips 35, 65 are formed on the outermost peripheral portions of the frame portions 30, 60, respectively.

In the pitch retaining members 25, 55 of the second aspect, the convex portions 34, 64 and the concave portions 35, 65 are formed on the outermost peripheries of the frame portions 30, 60 extending along the peripheral edge of the partition member 15.

The disclosure of the third aspect is based on the disclosure of the first or second aspect, and is characterized in that: the frame portions 30 and 60 have a common opening 22 and 52 for communicating the first flow passage 21 or the second flow passage 51 surrounded by the frame portions 30 and 60 with the outside of the frame portions 30 and 60, and an auxiliary rib 32 and 62 extending along the common opening 22 and 52 and facing the frame portions 30 and 60 of the adjacent other distance holding members 25 and 55, and the partition member 15 is sandwiched between the auxiliary rib 32 and 62 of one of the two distance holding members 25 and 55 adjacent to the partition member 15 and the frame portion 30 and 60 of the other.

In the heat exchanger 10 of the third aspect, the partition member 15 is sandwiched between the auxiliary ribs 32, 62 of one of the two adjacent space holding members 25, 55 and the frame portions 30, 60 of the other. As a result, even in the portions of the space holding members 25 and 55 where the communication openings 22 and 52 are formed, the partition member 15 can be held by the two space holding members 25 and 55 located on both sides of the partition member 15. In addition, in the portions of the space holding members 25 and 55 where the communication openings 22 and 52 are formed, the gaps between the partition member 15 and the space holding members 25 and 55 can be sealed.

The disclosure of the fourth aspect is directed to a heat exchanger including a plurality of partition members 15 in a flat sheet shape and pitch holding members 25, 55 alternately stacked on the partition members 15 and holding pitches between the adjacent partition members 15, and a first flow path 21 and a second flow path 51 alternately formed with the partition members 15 interposed therebetween. And, characterized in that: the space holding members 25, 55 have frame portions 30, 60 extending along the peripheral edge of the partition member 15, the frame portions 30, 60 have a common opening 22, 52 for communicating the first flow passage 21 or the second flow passage 51 surrounded by the frame portions 30, 60 with the outside of the frame portions 30, 60, and an auxiliary rib 32, 62 extending along the common opening 22, 52 and facing the frame portions 30, 60 of the adjacent other space holding members 25, 55, the partition member 15 being sandwiched between the auxiliary rib 32, 62 of one of the two space holding members 25, 55 adjacent to the partition member 15 and the frame portion 30, 60 of the other.

In the heat exchanger 10 of the fourth aspect, the partition members 15 and the pitch retaining members 25 and 55 are alternately stacked, and the first flow paths 21 and the second flow paths 51 are alternately formed. In the heat exchanger 10, the fluid flowing through the first flow path 21 and the fluid flowing through the second flow path 51 exchange at least sensible heat by the partition member 15.

In the heat exchanger 10 of the fourth aspect, the partition member 15 is sandwiched between the auxiliary ribs 32, 62 of one of the two adjacent space holding members 25, 55 and the frame portions 30, 60 of the other. As a result, the partition member 15 can be held by the two pitch holding members 25 and 55 located on both sides of the partition member 15. Further, the gap between the partition member 15 and the space holding members 25 and 55 can be sealed.

According to the fourth aspect, even when problems such as poor adhesion or deterioration of the adhesive occur, the partition member 15 can be held by the pitch holding members 25 and 55 on both sides of the partition member 15, and the gap between the partition member 15 and the pitch holding members 25 and 55 can be sealed. Further, even if the partition member 15 and the pitch holding members 25 and 55 are not bonded to each other, there is a possibility that the partition member 15 can be held by the pitch holding members 25 and 55 on both sides of the partition member 15, and the gap between the partition member 15 and the pitch holding members 25 and 55 can be sealed.

Therefore, according to the fourth aspect, it is possible to prevent the partition member 15, which is no longer held by the pitch holding members 25, 55, from obstructing the air flow in advance. Further, according to this aspect, it is possible to prevent air from invading one of the first flow path 21 and the second flow path 51 from the other through the gap between the partition member 15 and the pitch holding members 25, 55. As a result, the reliability of the heat exchanger 10 can be improved.

The disclosure of the fifth aspect is based on the disclosure of the third or fourth aspect, and is characterized in that: the frame portion 30, 60 of the space holding member 25, 55 has an outer rib 33, 63, the outer rib 33, 63 projects from a surface facing the auxiliary rib 32, 62 of the other adjacent space holding member 25, 55 and extends along the outside of the auxiliary rib 32, 62, and a projecting end surface of the outer rib 33, 63 of the space holding member 25, 55 is flush with a surface of the auxiliary rib 32, 62 of the adjacent space holding member 25, 55 opposite to the partition member 15 in the projecting direction of the outer rib 33, 63.

In the fifth aspect, the frame portions 30 and 60 of the pitch retaining members 25 and 55 are provided with the outer ribs 33 and 63 along the outer sides of the auxiliary ribs 32 and 62. The projecting end faces of the outside ribs 33, 63 of the pitch holding members 25, 55 face the first flow path 21 or the second flow path 51 formed by the pitch holding members 25, 55 adjacent in the projecting direction of the outside ribs 33, 63. In the space holding members 25 and 55, the surfaces of the auxiliary ribs 32 and 62 on the opposite side from the partition member 15 face the first flow path 21 or the second flow path 51 formed by the space holding members 25 and 55.

In the heat exchanger 10 of the fifth aspect, the projecting end faces of the outer ribs 33, 63 of the space holding members 25, 55 are flush with the face on the opposite side of the partition member 15 of the auxiliary ribs 32, 62 of the space holding members 25, 55 adjacent in the projecting direction of the outer ribs 33, 63. Therefore, the fluid can smoothly flow through the first flow path 21 or the second flow path 51 formed by the adjacent pitch retaining members 25 and 55 in the vicinity of the communication openings 22 and 52 communicating therewith.

The disclosure of the sixth aspect is based on the disclosure of the third or fourth aspect, and is characterized in that: the frame portion 30, 60 of the space holding member 25, 55 has an outer rib 33, 63, and the outer rib 33, 63 extends along the outer periphery of the space holding member 25, 55 over the entire periphery of the space holding member 25, 55.

In the sixth aspect, the outer ribs 33, 63 are provided on the frame portions 30, 60 of the pitch holding members 25, 55. The outer ribs 33, 63 are formed along the outer periphery of the pitch holding members 25, 55 around the entire circumference of the pitch holding members 25, 55. Therefore, the strength and rigidity of the pitch holding members 25, 55 can be ensured as compared with the case where the frame portions 30, 60 are cut halfway.

A seventh aspect of the present invention is the third or fourth aspect, wherein: the frame portions 30, 60 of the space holding members 25, 55 have outer ribs 33, 63, and the outer ribs 33, 63 extend along the connecting openings 22, 52 and are located outside the auxiliary ribs 32, 62 as a whole.

In the seventh aspect, the outer ribs 33, 63 are provided on the frame portions 30, 60 of the pitch holding members 25, 55. The outer ribs 33, 63 extend along the communication openings 22, 52. The outer ribs 33, 63 are located outside the auxiliary ribs 32, 62 as a whole. Therefore, the outer ribs 33, 63 do not overlap the auxiliary ribs 32, 62 when the pitch holding members 25, 55 are viewed in plan.

The disclosure of the eighth aspect is based on the disclosure of any one of the above-described third to seventh aspects, characterized in that: the auxiliary ribs 32, 62 of the space holding members 25, 55 have linear protrusions 36, 66, the linear protrusions 36, 66 extend along the auxiliary ribs 32, 62 and protrude toward the other space holding members 25, 55 facing the auxiliary ribs 32, 62, and linear recesses 37, 67 into which the linear protrusions 36, 66 of the adjacent other space holding members 25, 55 are fitted are formed in the frame portions 30, 60 of the space holding members 25, 55.

In the eighth aspect, the linear protrusions 36, 66 of one of the two adjacent pitch holding members 25, 55 are fitted into the linear recesses 37, 67 of the other. As a result, the gaps between the two adjacent pitch retaining members 25, 55 can be sealed by the linear protrusions 36, 66 and the linear recesses 37, 67 that are fitted to each other. Further, the linear protrusions 36 and 66 are formed on the auxiliary ribs 32 and 62, whereby the rigidity of the auxiliary ribs 32 and 62 is improved.

The ninth aspect is disclosed in the eighth aspect, wherein: the partition member 15 is sandwiched between the linear protrusions 36, 66 of one and the linear recesses 37, 67 of the other of the two pitch holding members 25, 55 adjacent to the partition member 15.

In the ninth aspect, the partition member 15 positioned between the adjacent two pitch holding members 25, 55 is sandwiched by the linear convex portions 36, 66 and the linear concave portions 37, 67 that are fitted to each other. As a result, the partition member 15 can be held by the two pitch holding members 25 and 55 located on both sides of the partition member 15. Furthermore, the gap between the partition member 15 and the spacer members 25 and 55 can be sealed.

A disclosure of a tenth aspect is based on the disclosure of any one of the above first to ninth aspects, characterized in that: the side surface formed by the outer peripheral surfaces of the stacked plural pitch holding members 25, 55 is a flat surface.

In the tenth aspect, the side surface of the heat exchanger 10 is a flat surface. Therefore, when the heat exchanger 10 is incorporated into a device such as a ventilator, the space between the structural members of the device and the side surface of the heat exchanger 10 can be easily sealed. As a result, the ease of use of the heat exchanger 10 is improved.

The eleventh aspect is directed to a heat exchanger 10 including a plurality of partition members 15 in a flat sheet shape, and pitch holding members 25 and 55 alternately stacked on the partition members 15 and holding pitches between the adjacent partition members 15, wherein a first flow path 21 and a second flow path 51 are alternately formed with the partition members 15 interposed therebetween. In this aspect, the space holding members 25, 55 have frame portions 30, 60 extending along the peripheral edge of the partition member 15.

In the eleventh aspect, the first space holding member 25, which is the space holding member forming the first flow path 21, includes a first communication opening 22 and first inner ribs 40, the first communication opening 22 is formed in the frame portion 30 of the first space holding member 25, the first flow path 21 surrounded by the frame portion 30 communicates with the outside of the frame portion 30, and the first inner ribs 40 extend from the first communication opening 22 in a direction intersecting the first communication opening 22 and contact the partition members 15 on both sides of the first space holding member 25.

In the eleventh aspect, the second space holding member 55, which is the space holding member forming the second flow path 51, includes a second communication opening 52 and a second inner rib 70, the second communication opening 52 being formed in the frame portion 60 of the second space holding member 55, the second flow path 51 surrounded by the frame portion 60 communicating with the outside of the frame portion 60, and the second inner rib 70 extending from the second communication opening 52 in a direction intersecting the second communication opening 52 and contacting the partition members 15 on both sides of the second space holding member 55.

In the eleventh aspect, the first pitch holding member 25 further includes first holding ribs 41a, 41b that intersect the first inner rib 40 and extend in the direction of the second inner rib 70 of the second pitch holding member 55, the partition member 15 being sandwiched between the first holding ribs 41a, 41b and the second inner rib 70 of the second pitch holding member 55 at an adjacent position.

In the eleventh aspect, the second pitch maintaining member 55 further includes second maintaining ribs 71a, 71b, the second maintaining ribs 71a, 71b intersecting the second inner rib 70 and extending in the direction of the first inner rib 40 of the first pitch maintaining member 25, the partition member 15 being sandwiched between the second maintaining ribs 71a, 71b and the first inner rib 40 of the first pitch maintaining member 25 located at an adjacent position.

In the heat exchanger 10 of the eleventh aspect, the partition members 15 and the pitch retaining members 25 and 55 are alternately stacked, and the first flow channels 21 and the second flow channels 51 are alternately formed. Each of the partition members 15 is sandwiched by the first pitch holding member 25 and the second pitch holding member 55. In the heat exchanger 10, the fluid flowing through the first flow path 21 and the fluid flowing through the second flow path 51 exchange at least sensible heat by the partition member 15.

In the eleventh aspect, the first pitch holding member 25 includes the first inner rib 40 and the first holding ribs 41a, 41 b. The first inner rib 40 and the first holding ribs 41a, 41b are located in the first flow path 21. On the other hand, the second space maintaining member 55 includes a second inner rib 70 and second maintaining ribs 71a, 71 b. The second inner rib 70 and the second holding ribs 71a, 71b are located in the second flow path 51.

In the eleventh aspect, the first holding ribs 41a, 41b of the first pitch holding member 25 extend along the second inside rib 70 of the second pitch holding member 55. Further, the second holding ribs 71a, 71b of the second pitch holding member 55 extend along the first inner rib 40 of the first pitch holding member 25. The partition member 15 that partitions the first channel 21 and the second channel 51 is sandwiched between the adjacent first holding ribs 41a and 41b and the second inner rib 70, and is sandwiched between the adjacent second holding ribs 71a and 71b and the first inner rib 40. As a result, the partition member 15 is held by the adjacent first holding ribs 41a and 41b and second inner rib 70, and by the adjacent second holding ribs 71a and 71b and first inner rib 40, at the portions located inside the frame portions 30 and 60 of the space holding members 25 and 55.

According to the eleventh aspect, even when problems such as poor adhesion or deterioration of the adhesive occur, the partition member 15 can be held by the pitch holding members 25, 55 on both sides of the partition member 15. Therefore, according to this aspect, it is possible to prevent the partition member 15, which is no longer held by the pitch holding members 25, 55, from obstructing the air flow in advance. As a result, the reliability of the heat exchanger 10 can be improved.

A twelfth aspect is disclosed on the basis of the above eleventh aspect, wherein: the first space maintaining member 25 includes the first retaining rib 41a on a side in contact with one of the two partition members 15 adjacent to the first space maintaining member 25 and the first retaining rib 41b on the other side in contact with the other of the two partition members 15 adjacent to the first space maintaining member 25, and the second space maintaining member 55 includes the second retaining rib 71a on a side in contact with one of the two partition members 15 adjacent to the second space maintaining member 55 and the second retaining rib 71b on the other side in contact with the other of the two partition members 15 adjacent to the second space maintaining member 55.

In the twelfth aspect, one of the two partition members 15 adjacent to the first pitch holding member 25 is sandwiched and held by the first holding rib 41a on one side and the second inner rib 70 adjacent to the first holding rib 41 a. The other of the two partition members 15 adjacent to the first pitch holding member 25 is sandwiched and held by the first holding rib 41b on the other side and the second inner rib 70 adjacent to the first holding rib 41 b.

Further, in the twelfth aspect, one of the two partition members 15 adjacent to the second pitch holding member 55 is sandwiched and held by the second holding rib 71a on one side and the first inner rib 40 adjacent to the second holding rib 71 a. The other of the two partition members 15 adjacent to the second space maintaining member 55 is sandwiched and held by the second holding rib 71b on the other side and the first inner rib 40 adjacent to the second holding rib 71 b.

The thirteenth aspect is disclosed on the basis of the above-described twelfth aspect, wherein: the first pitch maintaining member 25 includes a first pillar portion 42 connected to the first maintaining rib 41a on one side and the first maintaining rib 41b on the other side, and the second pitch maintaining member 55 includes a second pillar portion 72 connected to the second maintaining rib 71a on one side and the second maintaining rib 71b on the other side.

In the first pitch maintaining member 25 of the thirteenth aspect, the first pillar portion 42 is connected to the first maintaining rib 41a on the one side and the first maintaining rib 41b on the other side. The first strut part 42 can hold the distance between the first holding rib 41a on the one side and the first holding rib 41b on the other side. Therefore, the deflection of the first holding ribs 41a, 41b can be suppressed, and the partition member 15 can be held by the first holding ribs 41a, 41b and the second inner rib 70.

In the second space maintaining member 55 according to the thirteenth aspect, the second pillar portion 72 is connected to the one second holding rib 71a and the other second holding rib 71 b. The second support portion 72 can maintain the distance between the second holding rib 71a on the one side and the second holding rib 71b on the other side. Therefore, the deflection of the second holding ribs 71a, 71b can be suppressed, and the partition member 15 can be held by the second holding ribs 71a, 71b and the first inner rib 40.

The disclosure of the fourteenth aspect is based on the disclosure of the thirteenth aspect, and is characterized in that: in the first space maintaining member 25, a plurality of the first inner ribs 40 are provided in parallel with each other, in the first space maintaining member 25, between the adjacent first inner ribs 40, the first retaining rib 41a on one side protrudes from one of the adjacent first inner ribs 40 toward the other, the first retaining rib 41b on the other side protrudes from the other of the adjacent first inner ribs 40 toward the one, and the first stay portion 42 is connected to a protruding end of the first retaining rib 41a on one side and a protruding end of the first retaining rib 41b on the other side.

Further, a fourteenth aspect is disclosed on the basis of the above-described thirteenth aspect, wherein: in the second space maintaining member 55, a plurality of the second inner ribs 70 are provided in parallel with each other, in the second space maintaining member 55, between the adjacent second inner ribs 70, the second holding rib 71a on one side protrudes from one of the adjacent second inner ribs 70 toward the other, the second holding rib 71b on the other side protrudes from the other of the adjacent second inner ribs 70 toward the one, and the second pillar portion 72 is connected to a protruding end of the second holding rib 71a on one side and a protruding end of the second holding rib 71b on the other side.

In the first space maintainance member 25 of the fourteenth aspect, the first pillar portion 42 is connected to a protruding end of the first maintainance rib 41a protruding from one of the adjacent first inner ribs 40 and a protruding end of the first maintainance rib 41b protruding from the other of the first inner ribs 40. The first pillar portion 42 holds the pitch between the projecting end of the first holding rib 41a on the one side and the projecting end of the first holding rib 41b on the other side, and suppresses flexure of the first holding ribs 41a, 41 b.

Further, in the second space maintaining member 55 according to the fourteenth aspect, the second pillar portion 72 is connected to a protruding end of the second maintaining rib 71a protruding from one of the adjacent second inner ribs 70 and a protruding end of the second maintaining rib 71b protruding from the other of the second inner ribs 70. The second pillar portion 72 holds the pitch between the projecting end of the second holding rib 71a on the one side and the projecting end of the second holding rib 71b on the other side, and suppresses flexure of the second holding ribs 71a and 71 b.

The disclosure of the fifteenth aspect is based on the disclosure of the twelfth or thirteenth aspect, and is characterized in that: in the first space maintaining member 25, a plurality of the first inner ribs 40 are provided in parallel with each other, between the adjacent first inner ribs 40 of the first pitch maintenance member 25, the first maintenance rib 41a of one side protruding from one of the adjacent first inner ribs 40 toward the other and the first maintenance rib 41b of the other side protruding from one of the adjacent first inner ribs 40 toward the other are alternately provided in the direction of elongation of one of the adjacent first inner ribs 40, and the first maintenance rib 41b of the other side protruding from the other of the adjacent first inner ribs 40 toward the one and the first maintenance rib 41a of the one side protruding from the other of the adjacent first inner ribs 40 toward the one are alternately provided in the direction of elongation of the other of the adjacent first inner ribs 40.

Further, a fifteenth aspect is disclosed in the twelfth or thirteenth aspect, wherein: in the second space maintaining members 55, a plurality of the second inner ribs 70 are provided in parallel with each other, between the adjacent second inner ribs 70 of the second space maintaining member 55, the second holding rib 71a of one side protruding from one of the adjacent second inner ribs 70 toward the other and the second holding rib 71b of the other side protruding from one of the adjacent second inner ribs 70 toward the other are alternately provided in the direction of elongation of one of the adjacent second inner ribs 70, and the second holding rib 71b of the other side protruding from the other of the adjacent second inner ribs 70 toward the one and the second holding rib 71a of the one side protruding from the other of the adjacent second inner ribs 70 toward the one are alternately provided in the direction of elongation of the other of the adjacent second inner ribs 70.

In the first space maintainance member 25 of the fifteenth aspect, the first maintainance rib 41a on one side and the first maintainance rib 41b on the other side protruding from the first inner rib 40 are alternately provided in the extending direction of one of the adjacent first inner ribs 40. Further, in the first pitch retaining member 25, the other-side first retaining rib 41b and the one-side first retaining rib 41a protruding from the first inner rib 40 are alternately provided in the extending direction of the other of the adjacent first inner ribs 40.

In the fifteenth aspect, a partition member 15 that abuts the first pitch holding member 25 is supported by the first holding rib 41a on the side that protrudes from one of the adjacent first inner ribs 40 and the first holding rib 41a on the side that protrudes from the other of the adjacent first inner ribs 40. Further, the other partition member 15 adjoining the first pitch holding member 25 is supported by the other-side first holding rib 41b protruding from one of the adjacent first inner ribs 40 and the other-side first holding rib 41b protruding from the other of the adjacent first inner ribs 40.

In the second space maintaining member 55 according to the fifteenth aspect, the first holding rib 41a on one side and the first holding rib 41b on the other side protruding from the second inner rib 70 are alternately provided in the extending direction of one of the adjacent second inner ribs 70. Further, in the second space maintaining member 55, the other-side first maintaining rib 41b and the one-side first maintaining rib 41a protruding from the second inner rib 70 are alternately provided in the extending direction of the other of the adjacent second inner ribs 70.

In the fifteenth aspect, a partition member 15 adjoining the second pitch holding member 55 is supported by the second holding rib 71a on the side protruding from one of the adjacent second inner ribs 70 and the second holding rib 71a on the side protruding from the other of the adjacent second inner ribs 70. Further, the other partition member 15 adjoining the second pitch maintaining member 55 is supported by the other-side second maintaining rib 71b protruding from one of the adjacent second inner ribs 70 and the other-side second maintaining rib 71b protruding from the other of the adjacent second inner ribs 70.

A sixteenth aspect is disclosed on the basis of the above eleventh aspect, wherein: the first holding rib 41b of the first pitch holding member 25 is in contact with one of the two partition members 15 adjacent to the first pitch holding member 25, and the first pitch holding member 25 includes a first pillar portion 42, the first pillar portion 42 protrudes from the first holding rib 41b, and the protruding end is in contact with the other of the two partition members 15 adjacent to the first pitch holding member 25.

Further, a sixteenth aspect is disclosed in the eleventh aspect, wherein: the second holding rib 71b of the second space maintaining member 55 is in contact with one of the two partition members 15 adjacent to the second space maintaining member 55, and the second space maintaining member 55 includes a second pillar portion 72, the second pillar portion 72 protruding from the second holding rib 71b and having a protruding end in contact with the other of the two partition members 15 adjacent to the second space maintaining member 55.

In the first pitch-maintaining member 25 of the sixteenth aspect, the first holding rib 41b is in contact with one of the two partition members 15 located on both sides of the first pitch-maintaining member 25, and the protruding end of the first pillar portion 42 is in contact with the other of the two partition members 15 located on both sides of the first pitch-maintaining member 25. A partition member 15 adjacent to the first pitch holding member 25 is sandwiched by the first holding rib 41b and the second inner rib 70 of the second pitch holding member 55 in contact with the partition member 15. The other partition member 15 adjacent to the first pitch maintaining member 25 is sandwiched between the first pillar portion 42 and the second inner rib 70 of the second pitch maintaining member 55 in contact with the partition member 15.

In the second space maintaining member 55 according to the sixteenth aspect, the second holding rib 71b is in contact with one of the two partition members 15 located on both sides of the second space maintaining member 55, and the protruding end of the second column portion 72 is in contact with the other of the two partition members 15 located on both sides of the second space maintaining member 55. A partition member 15 adjacent to the second pitch maintaining member 55 is sandwiched by the second maintaining rib 71b and the first inner rib 40 of the first pitch maintaining member 25 in contact with the partition member 15. The other partition member 15 adjacent to the second pitch maintaining member 55 is sandwiched between the second pillar portion 72 and the first inner rib 40 of the first pitch maintaining member 25 in contact with the partition member 15.

A seventeenth aspect is disclosed on the basis of the disclosure of any one of the above eleventh to sixteenth aspects, characterized in that: the first pitch retaining member 25 includes a first flow channel inner rib 45 and first support ribs 46a and 46b, the first flow channel inner rib 45 is provided in the first flow channel 21 surrounded by the frame portion 30 of the first pitch retaining member 25 and is in contact with two of the partition members 15 adjacent to the first pitch retaining member 25, and the first support ribs 46a and 46b extend in a direction intersecting the first flow channel inner rib 45 and are in contact with one of the partition members 15 located adjacent to the first pitch retaining member 25.

Further, a seventeenth aspect is disclosed on the basis of the disclosure of any one of the above eleventh to sixteenth aspects, characterized in that: the second space maintaining member 55 includes a second flow path inner rib 75 and second support ribs 76a and 76b, the second flow path inner rib 75 is provided in the second flow path 51 surrounded by the frame portion 60 of the second space maintaining member 55, extends along the first flow path inner rib 45 of the first space maintaining member 25, and contacts two of the partition members 15 adjacent to the second space maintaining member 55, and the second support ribs 76a and 76b extend in a direction intersecting the second flow path inner rib 75, and contact one of the partition members 15 located adjacent to the second space maintaining member 55.

In the heat exchanger 10 of the seventeenth aspect, the first flow path inner ribs 45 are provided in the first space maintaining member 25, and the second flow path inner ribs 75 are provided in the second space maintaining member 55. The first flow path inner rib 45 contacts the two partition members 15 located on both sides of the first pitch maintaining member 25. The second flow path inner rib 75 contacts the two partition members 15 located on both sides of the second space maintaining member 55. Further, the second flow path inner rib 75 extends along the first flow path inner rib 45. Therefore, the partition member 15 positioned between the first pitch holding member 25 and the second pitch holding member 55 is sandwiched between the first flow path inner rib 45 and the second flow path inner rib 75.

In the heat exchanger 10 according to the seventeenth aspect, the first support ribs 46a and 46b are provided in the first space maintaining member 25, and the second support ribs 76a and 76b are provided in the second space maintaining member 55. The first support ribs 46a, 46b contact a partition member 15 adjacent to the first pitch holding member 25 and support the partition member 15. The second support ribs 76a, 76b contact a partition member 15 adjacent to the second pitch maintaining member 55 and support the partition member 15.

Here, in the heat exchanger of patent document 1, a plurality of resin frames and a plurality of heat transfer plates are alternately stacked. Therefore, when the dimensional accuracy of the resin frame is insufficient, it is difficult to seal the gap between the peripheral edge portion of the resin frame and the heat transfer plate over the entire circumference of the resin frame. As a result, the air tightness of the heat exchanger is reduced, and the amount of air that leaks from the air flow path or enters the air flow path through a path other than the inlet and outlet of the air flow path may increase.

The eighteenth aspect is disclosed in the first, fourth, or eleventh aspect, wherein: the frame portions 30 and 60 have outer side portions 33 and 63 extending along the peripheral edges of the frame portions 30 and 60 and inner side portions 136 and 166 located inside the outer side portions 33 and 63 and extending along the outer side portions 33 and 63, the inner side portions 136 and 166 of the frame portions 30 and 60 hold the partition member 15 between the inner side portions 136 and 166 and the space holding members 25 and 55 located adjacent to the inner side portions 136 and 166, and an outer gap 81 is formed between the outer side portions 33 and 63 of the frame portions 30 and 60 and the space holding members 25 and 55 located adjacent to the outer side portions 33 and 63.

In the eighteenth aspect, the frame portions 30 and 60 extending along the peripheral edge of the partition member 15 are provided with the outer side portions 33 and 63 and the inner side portions 136 and 166. In the heat exchanger 10, an outer gap 81 is formed between the outer portions 33, 63 of the partition members 15 and the pitch retaining members 25, 55 located adjacent to the outer portions 33, 63. In the heat exchanger 10, the inner portions 136 and 166 of the partition members 15 sandwich and hold the partition members 15 between the inner portions 136 and 166 and the space holding members 25 and 55 located adjacent to the inner portions 136 and 166. As a result, the frame portions 30 and 60 of the pitch holding members 25 and 55 and the partition member 15 can be sealed, and the airtightness of the heat exchanger can be improved.

A nineteenth aspect of the present invention is the eighteenth aspect of the present invention, wherein: the heat exchanger includes an adhesive layer 85, and the adhesive layer 85 is provided so as to be embedded in the outer gap 81, and adheres the outer side portions 33, 63 of the frame portions 30, 60 to the space holding members 25, 55 located adjacent to the outer side portions 33, 63.

In the nineteenth aspect, the adjacent pitch retaining members 25, 55 are bonded to each other by the adhesive layer 85 provided so as to be buried in the outer gap 81. Further, since the outer gap 81 is buried by the adhesive layer 85, the airtightness of the heat exchanger 10 is improved. As a result, the amount of air leaking from the air flow passages 21, 51 or entering the air flow passages 21, 51 through paths other than the regular path can be suppressed.

A twentieth aspect of the present invention is the nineteenth aspect of the present invention, wherein: the heat exchanger includes a cover layer 86, the cover layer 86 is formed of the same material as the adhesive layer 85, and then the adhesive layer 85 is formed to cover the outer surface of the heat exchanger 10.

In the twentieth aspect, the outer surface of the heat exchanger 10 is covered by the cover layer 86. Therefore, the outer surface of the heat exchanger 10 is protected by the cover layer 86, and the reliability of the heat exchanger 10 is improved.

A twenty-first aspect is disclosed in the nineteenth or twentieth aspect, wherein: the adhesive layer 85 is formed of an adhesive agent cured by ultraviolet irradiation.

In the twenty-first aspect, the adhesive layer 85 can be formed on the heat exchanger 10 by irradiating the adhesive agent entering the outer gap 81 with ultraviolet rays.

A twenty-second aspect is disclosed in the nineteenth or twentieth aspect, wherein: the adhesive layer 85 contains an antibacterial component and a mold-proof component.

In the twenty-second aspect, the propagation of bacteria and mold in the heat exchanger 10 can be suppressed, so that the cleanliness of the heat exchanger 10 can be maintained.

A twenty-third aspect is disclosed on the basis of any one of the above-described nineteenth to twenty-second aspects, characterized in that: in the frame portions 30, 60 of the pitch retaining members 25, 55, positioning protrusions 137, 167 and positioning holes 138, 168 are formed, the positioning protrusions 137, 167 protrude from the surface of the partition member 15 located in one direction of the stacking direction, the positioning holes 138, 168 are open on the surface located in the other direction and are fitted into the positioning protrusions 137, 167 of the pitch retaining members 25, 55 located adjacent to the frame portions 30, 60, and in the frame portions 30, 60 of the pitch retaining members 25, 55, the positioning protrusions 137, 167 and the surface formed with the positioning protrusions 137, 167 are bonded to the pitch retaining members 25, 55 formed with the positioning holes 138, 168 into which the positioning protrusions 137, 167 are fitted, by the adhesive layer 85.

In the twenty-third aspect, the positioning projections 137, 167 of each pitch holding member 25, 55 enter the positioning holes 138, 168 of the pitch holding member 25, 55 located at the adjacent position of the pitch holding member 25, 55. Thus, the relative position between the adjacent space holding members 25, 55 is determined. The positioning projections 137, 167 of the respective pitch holding members 25, 55 are bonded to the pitch holding members 25, 55 located adjacent to the pitch holding members 25, 55 by the adhesive layer 85.

Drawings

Fig. 1 is a perspective view of a heat exchanger of a first embodiment;

FIG. 2 is a top plan view of the heat exchanger of the first embodiment;

FIG. 3 is a top plan view showing a portion of the heat exchanger of the first embodiment;

FIG. 4 is a perspective view showing the periphery of section XI-XI of FIG. 3;

FIG. 5 is a top view of the first frame of the first embodiment;

fig. 6 is a perspective view showing a state of a part of the first frame of the first embodiment viewed from the surface side;

fig. 7 is a perspective view showing a state of a part of the first frame of the first embodiment viewed from the back side;

fig. 8 is a plan view of the second frame of the first embodiment;

fig. 9 is a perspective view showing a state of a part of the second frame of the first embodiment viewed from the surface side;

fig. 10 is a perspective view showing a state of a part of the second frame of the first embodiment viewed from the back side;

FIG. 11 is a partial cross-sectional view of the heat exchanger showing section XI-XI of FIG. 3;

fig. 12 is a sectional view showing the arrangement of the sections of the first and second elements of the first embodiment corresponding to fig. 11;

FIG. 13 is a partial cross-sectional view of the heat exchanger showing a section XIII-XIII in FIG. 3;

fig. 14 is a sectional view showing the arrangement of the sections of the first and second elements of the first embodiment corresponding to fig. 13;

FIG. 15 is a partial cross-sectional view of the heat exchanger showing the XV-XV cross-section of FIG. 3;

fig. 16 is a sectional view showing the arrangement of the sections of the first and second elements of the first embodiment corresponding to fig. 15;

fig. 17 is a sectional view showing a section corresponding to fig. 11 of the heat exchanger of the second embodiment;

fig. 18 is a sectional view showing the arrangement of the sections of the first and second elements of the second embodiment corresponding to fig. 17;

fig. 19 is a sectional view showing a section corresponding to fig. 13 of the heat exchanger of the second embodiment;

fig. 20 is a sectional view showing the arrangement of the sections of the first and second elements of the second embodiment corresponding to fig. 19;

fig. 21 is a perspective view of the first frame of the third embodiment corresponding to fig. 6;

fig. 22 is a plan view showing a part of the first frame of the third embodiment in an enlarged manner;

fig. 23 is a plan view showing a part of a second frame of the third embodiment in an enlarged manner;

fig. 24 is a sectional view showing a section corresponding to fig. 11 of the heat exchanger of the third embodiment;

fig. 25 is a perspective view of the first frame of the fourth embodiment corresponding to fig. 6;

fig. 26 is a plan view showing a part of the first frame of the fourth embodiment in an enlarged manner;

fig. 27 is a plan view showing a part of a second frame of the fourth embodiment in an enlarged manner;

fig. 28 is a sectional view showing a section corresponding to fig. 11 of the heat exchanger of the fourth embodiment;

fig. 29 is a perspective view corresponding to fig. 6 of a first frame in modification 1 of the fourth embodiment;

fig. 30 is an enlarged plan view of a part of a first frame in modification 1 of the fourth embodiment;

fig. 31 is an enlarged plan view of a part of a second frame in modification 1 of the fourth embodiment;

fig. 32 is a perspective view, corresponding to fig. 6, of the first frame of the fifth embodiment;

fig. 33 is a plan view showing a part of the first frame of the fifth embodiment in an enlarged manner;

fig. 34 is a plan view showing a part of a second frame of the fifth embodiment in an enlarged manner;

fig. 35 is a sectional view showing a section corresponding to fig. 11 of the heat exchanger of the fifth embodiment;

fig. 36 is a sectional view showing a part of a section corresponding to the section XI-XI of fig. 3 of the heat exchanger according to the sixth embodiment in an enlarged manner;

fig. 37 is a cross-sectional view showing a part of a cross section of the heat exchanger according to the sixth embodiment, which corresponds to the cross section XIII-XIII in fig. 3, in an enlarged manner;

fig. 38 is a cross-sectional view showing a part of a cross section of the heat exchanger according to the sixth embodiment, which corresponds to the XV-XV cross section in fig. 3, in an enlarged manner;

fig. 39 is a sectional view showing a cross section corresponding to fig. 38 of the heat exchanger of the sixth embodiment in production;

fig. 40 is a cross-sectional view showing a cross section of the heat exchanger according to the seventh embodiment corresponding to fig. 38.

Detailed Description

(first embodiment)

Next, a first embodiment will be explained. The heat exchanger 10 of the present embodiment is a so-called total heat exchanger. The heat exchanger 10 is provided in a ventilator, and exchanges sensible heat and latent heat (moisture) between outdoor air (supply air) supplied to the interior of a room and indoor air (discharge air) discharged to the exterior of the room.

Integral construction of the heat exchanger

As shown in fig. 1, the heat exchanger 10 is formed in a cylindrical shape having a polygonal end surface. The end surface of the heat exchanger 10 of the present embodiment is formed in an octagonal shape having a long lateral length. As also shown in fig. 2, in the heat exchanger 10, one main heat exchange portion 11 and two sub heat exchange portions 12a, 12b are formed.

The main heat exchange portion 11 is located at the center in the left-right direction of fig. 2 in the heat exchanger 10. In a plan view of the heat exchanger 10 shown in fig. 2, the main heat exchange portion 11 is a rectangular portion having a long lateral length. The sub heat exchange portions 12a and 12b are located on both sides of the main heat exchange portion 11 in the left-right direction of fig. 2 in the heat exchanger 10. In the heat exchanger 10, one sub heat exchange portion 12a, 12b is disposed on each side of the main heat exchange portion 11 in the left-right direction of fig. 2. In the plan view of the heat exchanger 10 shown in fig. 2, the sub heat exchange portions 12a and 12b are trapezoidal portions.

The heat exchanger 10 includes a plurality of first elements 20 and a plurality of second elements 50. In the heat exchanger 10, the first elements 20 and the second elements 50 are alternately overlapped. The first element 20 forms a first flow path 21. The first flow path 21 is a flow path through which the supplied air flows. The second element 50 forms a second flow path 51. The second flow path 51 is a flow path through which exhaust gas flows. In the heat exchanger 10, the first flow path 21 and the second flow path 51 are alternately formed along the stacking direction of the first element 20 and the second element 50.

A first inlet 22a, a first outlet 22b, a second inlet 52a, and a second outlet 52b are formed on a side surface (a surface extending in the stacking direction of the first element 20 and the second element 50) of the heat exchanger 10. A first inflow port 22a and a first outflow port 22b are formed on the first element 20 and communicate with the first flow path 21. A second inlet port 52a and a second outlet port 52b are formed on the second element 50 and communicate with the second flow path 51.

As also shown in fig. 2 and 3, the first inflow port 22a, the first outflow port 22b, the second inflow port 52a, and the second outflow port 52b are formed on different sides of the heat exchanger 10, respectively. In the sub-heat exchange portion 12a of the heat exchanger 10, the first inflow port 22a opens on one side surface, and the second outflow port 52b opens on the other side surface. In the other sub heat exchange portion 12b of the heat exchanger 10, the first outlet 22b is open on one side surface, and the second inlet 52a is open on the other side surface.

The side surface of the heat exchanger 10 is constituted by the outer peripheral surfaces of the first member 20 and the second member 50 laminated together. The sides of the heat exchanger 10 are substantially planar.

Air flow and heat exchange action

As shown in fig. 2, in the heat exchanger 10, the outdoor air OA flows into the first inlet 22a, and the indoor air RA flows into the second inlet 52 a. The outdoor air OA flowing into the first inlet 22a flows through the first flow path 21 as supply air, passes through the sub heat exchanger 12a, the main heat exchanger 11, and the other sub heat exchanger 12b in this order, and then flows out from the first outlet 22b to be supplied to the room. The indoor air RA flowing into the second inlet 52a flows through the second flow path 51 as exhaust gas, passes through the other sub heat exchanger 12b, the main heat exchanger 11, and the sub heat exchanger 12a in this order, and then flows out from the second outlet 52b to be discharged to the outside.

In each of the sub heat exchange portions 12a and 12b of the heat exchanger 10, the supply air flowing through the first flow path 21 and the exhaust air flowing through the second flow path 51 flow in directions intersecting each other. In the main heat exchange portion 11 of the heat exchanger 10, the supply air flowing in the first flow path 21 and the exhaust air flowing in the second flow path 51 flow in opposite directions to each other.

In the heat exchanger 10, sensible heat and latent heat (moisture) are exchanged between the supply air flowing in the first flow path 21 and the exhaust air flowing in the second flow path 51. In the heat exchanger 10, heat moves from the higher temperature side to the lower temperature side of the supply air and the exhaust air. In the heat exchanger 10, moisture moves from the higher humidity side of the supply air and the exhaust air to the lower humidity side.

A first element, a second element

As shown in fig. 4, 12, 14, and 16, the first member 20 includes a first frame 25 and a partition 15, and the second member 50 includes a second frame 55 and a partition 15.

The first frame 25 and the second frame 55 are each a flat resin member formed by injection molding, which will be described in detail later. In the following description, the upper surfaces of first frame 25 and second frame 55 in fig. 4, 12, 14, and 16 are referred to as "front surfaces", and the lower surfaces of first frame 25 and second frame 55 in fig. 4, 12, 14, and 16 are referred to as "back surfaces".

The separator 15 is a sheet-like member having high moisture permeability and low air permeability. The partition plate 15 is a partition member that partitions the first channel 21 and the second channel 51. The material of the separator 15 is a polymer material (e.g., polyurethane) containing a hydrophilic group and a hydrophobic group. The thickness of the separator 15 is, for example, about 1 to 30 μm.

The separator 15 may be made of paper, nonwoven fabric, or the like. Examples of the material of the paper or nonwoven fabric constituting the separator 15 include fibrous resin, fibrous metal, glass fiber, and pulp.

In the first member 20, the spacer 15 is bonded to the back surface of the first frame 25 by an adhesive. The partition 15 covers almost the entire back surface of the first frame 25. In the second member 50, the spacer 15 is bonded to the back surface of the second frame 55 by an adhesive. The partition 15 covers almost the entire back surface of the second frame 55.

A first frame

As shown in fig. 5, the first frame 25 is formed in an octagonal shape having a long lateral length in a plan view. The outer shape of the first frame 25 in plan view is substantially the same as the shape of the end face of the heat exchanger 10. The first frame 25 is a first space maintaining member that maintains the space between adjacent separators 15.

In the first frame 25, a central region 26 and two end regions 27a, 27b are formed. The central region 26 is a rectangular region having a long transverse length, and is located at the center in the left-right direction in fig. 5. In the first frame 25, the end regions 27a, 27b are formed one on each side of the central region 26. The end regions 27a, 27b are trapezoidal regions located on both sides of the central region 26 in the left-right direction in fig. 5.

Frame

The first frame 25 includes a frame portion 30. The frame portion 30 is a portion extending along the outer periphery of the first frame 25, and is formed around the entire periphery of the first frame 25. In other words, the frame portion 30 is formed in an octagonal frame shape having a long lateral length. The frame portion 30 surrounds the first flow path 21 formed by the first frame 25. Further, the frame 30 extends along the peripheral edge of the separator 15.

Two first connection openings 22 are formed in the frame portion 30 of the first frame 25. Each first communication opening 22 communicates the first flow channel 21 surrounded by the frame portion 30 with the outside of the frame portion 30. In the frame portion 30 shown in fig. 5, one first communication opening 22 is formed in almost the entire length direction of the downward sloping side of the end region 27a located on the left side, and constitutes the first inflow port 22 a. In the frame portion 30 shown in fig. 5, the other first communication opening 22 is formed in almost the entire longitudinal direction of the upward sloping side of the end portion region 27b on the right side, and constitutes the first outflow port 22 b.

As shown in fig. 5 to 7, the frame portion 30 of the first frame 25 includes a closed portion 31, an outer rib 33, and an auxiliary rib 32. A part of the outer rib 33 constitutes the ridge portion 34. The closing portion 31 is formed with a recessed strip portion 35.

The closed portions 31 extend along six sides of the frame portion 30 where the first connecting opening 22 is not formed. As shown in fig. 13 to 16, the cross section of the closing portion 31 has a shape in which one corner of a rectangle is cut out. The blocking section 31 partitions the first flow channel 21 surrounded by the frame 30 from the outside of the frame 30. The thickness of the closing portion 31 is substantially equal to the thickness of the first flow path 21.

As shown in fig. 5, the outer rib 33 is a portion extending along the outer periphery of the frame 30, and is formed around the entire periphery of the frame 30. The outer ribs 33 are formed along a total of eight sides of the frame portion 30. The outer rib 33 is arranged on the surface side of the closing portion 31, and is formed integrally with the closing portion 31.

As shown in fig. 13 to 16, the portion of the outer rib 33 adjacent to the closing portion 31 constitutes a ridge portion 34. The raised strip 34 extends along the outermost periphery of the closure portion 31 and projects from the surface of the closure portion 31. The outer peripheral surface of the raised strip portion 34 and the outer peripheral surface of the closing portion 31 form a plane.

As shown in fig. 13 to 16, the recessed strip portion 35 is a recessed groove that opens on the back surface of the closing portion 31. The concave portion 35 is formed along the outermost periphery of the closed portion 31 over the entire length of the closed portion 31. The concave portion 35 is also opened on the outer peripheral surface of the closing portion 31. The cross-sectional shape of the concave portion 35 corresponds to the cross-sectional shape of a convex portion 64 of the second frame 55 described later. The outer rib 63 of the second frame 55 is fitted into the concave bar portion 35 of the first frame 25. Therefore, the convex rib 64, which is a part of the outer rib 63 of the second frame 55, is fitted into the concave rib 35 of the first frame 25.

As shown in fig. 5 to 7, the auxiliary rib 32 is a portion extending along the first connection-purpose opening 22. The auxiliary rib 32 is disposed on the back side of the frame portion 30. As shown in fig. 11 and 12, the cross-sectional shape of the auxiliary rib 32 is a flat rectangle. The surface of the auxiliary rib 32 is located on the same plane as the projecting end surface (upper surface in fig. 11) of the ridge portion 64 of the adjacent second frame 55. The back surface of the auxiliary rib 32 is flush with the back surface of the closing portion 31.

First inner rib, first holding rib

As shown in fig. 5 to 7, the first frame 25 includes a first inner rib 40 and first holding ribs 41a, 41 b. A first inner rib 40 and first retention ribs 41a, 41b are provided at each end region 27a, 27b of the first frame 25.

The first inner rib 40 is formed in a straight bar shape and extends in a direction intersecting the first connection-purpose opening 22. In the present embodiment, the first inner rib 40 extends from the side of the frame portion 30 where the first communication opening 22 is formed in a direction substantially orthogonal to the side. The height of the first inner rib 40 is substantially equal to the thickness of the first flow path 21 (see fig. 11).

In each of the end regions 27a, 27b of the first frame 25 of the present embodiment, four first inner ribs 40 are provided in parallel with each other with a substantially constant distance therebetween. In each end region 27a, 27b, the four first inner ribs 40 are connected to one another by the auxiliary rib 32. Each first inner rib 40 is formed integrally with the auxiliary rib 32. The back surface of each first inner rib 40 is located on the same plane as the back surface of the auxiliary rib 32.

The first holding ribs 41a, 41b are formed in straight bar shapes and extend in a direction substantially orthogonal to the first inner rib 40. The first holding ribs 41a, 41b are formed to extend from one of the adjacent first inner ribs 40 to the other. In other words, the first holding ribs 41a, 41b traverse the portion between the adjacent first inner ribs 40 in the first flow path 21.

As shown in fig. 6 and 7, between the adjacent first inner ribs 40, the first holding ribs 41a, 41b are arranged one each on the front side and the back side of the first frame 25. The surface of the first holding rib 41a on the surface side of the first frame 25 is located on the same plane as the surfaces of the first inside rib 40 and the closing part 31. The back surface of the first holding rib 41b on the back surface side of the first frame 25 is on the same plane as the back surfaces of the first inner rib 40 and the closing part 31.

As shown in fig. 11, the first holding ribs 41a and 41b are provided along a second inner rib 70 of the second frame 55, which will be described later. The first holding ribs 41a and 41b overlap the second inner ribs 70 of the adjacent second frame 55 over their entire lengths in a plan view. The first holding rib 41a on the front side of the first frame 25 and the first holding rib 41b on the back side thereof are provided at positions that do not overlap each other in plan view.

The thickness of each of the first retaining ribs 41a, 41b is less than half the thickness of the first inner rib 40. The first holding rib 41a on the front side of the first frame 25 and the first holding rib 41b on the back side thereof are separated in the thickness direction of the first inner rib 40.

First flow path inner rib, first support rib

As shown in fig. 5 to 7, the first frame 25 includes a first flow path inner rib 45 and first support ribs 46a, 46 b. The first flow path inner rib 45 and the first support ribs 46a, 46b are provided at the central region 26 of the first frame 25.

The first flow path inner rib 45 is formed in a straight rod shape and extends in a direction parallel to the long side of the central region 26. In other words, the first flow path inner rib 45 extends from the one end portion 27a toward the other end portion 27 b. The height of the first flow path inner rib 45 is substantially equal to the thickness of the first flow path 21 (see fig. 15). In the central area 26 of the first frame 25 of the present embodiment, nine first flow path inner ribs 45 are provided in parallel with each other with a substantially constant interval therebetween.

As shown in fig. 5 and 15, the first support ribs 46a and 46b are formed in a straight rod shape and extend in a direction substantially orthogonal to the first flow path inner rib 45. The first support ribs 46a, 46b are formed to extend from one to the other of the adjacent first flow path inner ribs 45. In other words, the first support ribs 46a and 46b intersect the portions of the first flow path 21 between the adjacent first flow path inner ribs 45.

As shown in fig. 15, between the adjacent first flow path inner ribs 45, the first support ribs 46a, 46b are arranged one each on the front side and the back side of the first frame 25. The surface of the first support rib 46a on the surface side of the first frame 25 is flush with the surfaces of the first flow path inner rib 45 and the closing portion 31. The back surface of the first support rib 46b on the back surface side of the first frame 25 is flush with the back surfaces of the first flow path inner rib 45 and the closing portion 31.

The thickness of each of the first support ribs 46a, 46b is less than half the thickness of the first flow path inner rib 45. The first support rib 46a on the front side of the first frame 25 and the first support rib 46b on the back side thereof are separated in the thickness direction of the first flow path inner rib 45. The first support rib 46a on the front side of the first frame 25 and the first support rib 46b on the back side thereof are provided at positions that do not overlap each other in plan view.

A second frame

As shown in fig. 8, the second frame 55 is formed in an octagonal shape having a long lateral length in a plan view. The outer shape of the second frame 55 is substantially the same as the shape of the end face of the heat exchanger 10 in plan view. The second frame 55 is a second pitch maintaining member that maintains the pitch between the adjacent separators 15.

In the second frame 55, one central region 56 and two end regions 57a, 57b are formed. The central region 56 is a rectangular region having a long lateral length, and is located at the center in the left-right direction in fig. 8. In the second frame 55, the end regions 57a, 57b are formed one on each side of the central region 56. The end regions 57a, 57b are trapezoidal regions located on both sides of the central region 56 in the left-right direction in fig. 8.

Frame

The second frame 55 includes a frame portion 60. The frame portion 60 is a portion extending along the outer periphery of the second frame 55, and is formed around the entire periphery of the second frame 55. In other words, the frame portion 60 is formed in an octagonal frame shape having a long lateral length. The frame portion 60 surrounds the second flow path 51 formed by the second frame 55. Further, the frame portion 60 extends along the peripheral edge of the separator 15.

Two second communication openings 52 are formed in the frame portion 60 of the second frame 55. Each of the second communication openings 52 communicates the second flow channel 51 surrounded by the frame portion 60 with the outside of the frame portion 60. In the frame portion 60 shown in fig. 8, a second communication opening 52 is formed over almost the entire length of the upward sloping side of the end region 57a on the left side, and constitutes a second outlet 52 b. In the frame portion 60 shown in fig. 8, the second communication opening 52 is formed over substantially the entire length of the downward sloping side of the end region 57b on the right side, and constitutes the second inlet 52 a.

As shown in fig. 8 to 10, the frame portion 60 of the second frame 55 includes a closed portion 61, an outer rib 63, and an auxiliary rib 62. A part of the outer rib 63 constitutes a raised strip portion 64. A concave strip portion 65 is formed on the closing portion 61.

The closing portions 61 extend along six sides of the frame portion 60 where the second communication openings 52 are not formed. As shown in fig. 11, 12, 15, and 16, the cross section of the closing portion 61 is a shape in which one corner of a rectangle is cut off. The blocking section 61 partitions the second flow channel 51 surrounded by the frame 60 from the outside of the frame 60. The thickness of the closing portion 61 is substantially equal to the thickness of the second flow path 51.

As shown in fig. 8, the outer rib 63 is a portion extending along the outer periphery of the frame portion 60, and is formed around the entire periphery of the frame portion 60. The outer ribs 63 are formed along a total of eight sides of the frame portion 60. The outer rib 63 is disposed on the surface side of the closing portion 61, and is formed integrally with the closing portion 61.

As shown in fig. 11, 12, 15, and 16, the portion of the outer rib 63 adjacent to the closing portion 61 constitutes a ridge portion 64. The raised strip 64 extends along the outermost periphery of the closure portion 61 and projects from the surface of the closure portion 61. The outer peripheral surface of the raised strip 64 and the outer peripheral surface of the closing portion 61 form a single plane.

As shown in fig. 11, 12, 15, and 16, the recessed strip portion 65 is a recessed groove that opens on the back surface of the closing portion 61. The concave portion 65 is formed along the outermost peripheral edge of the closed portion 61 over the entire length of the closed portion 61. The concave portion 65 is also opened on the outer peripheral surface of the closing portion 61. The cross-sectional shape of the concave portion 65 corresponds to the cross-sectional shape of the convex portion 34 of the first frame 25. The outer rib 33 of the first frame 25 is fitted into the concave bar portion 65 of the second frame 55. Therefore, the convex portions 34, which are a part of the outer ribs 33 of the first frame 25, are fitted into the concave portions 65 of the second frame 55.

As shown in fig. 8 to 10, the auxiliary rib 62 extends along the second communication opening 52. The auxiliary rib 62 is disposed on the back side of the frame portion 60. As shown in fig. 13 and 14, the cross-sectional shape of the auxiliary rib 62 is a flat rectangle. The surface of the auxiliary rib 62 is flush with the projecting end surface (upper surface in fig. 13) of the ridge portion 34 of the adjacent first frame 25. The back surface of the auxiliary rib 62 is flush with the back surface of the closing portion 61.

Second inner rib, second holding rib

As shown in fig. 8 to 10, the second frame 55 includes a second inner rib 70 and second holding ribs 71a, 71 b. A second inner rib 70 and second retaining ribs 71a, 71b are provided at each end region 57a, 57b of the second frame 55.

The second inner rib 70 is formed in a straight bar shape and extends in a direction intersecting the second communication opening 52. In the present embodiment, the second inner rib 70 extends from the edge of the frame portion 60 where the second communication opening 52 is formed, in a direction substantially orthogonal to the edge. The height of the second inner rib 70 is substantially equal to the thickness of the second flow path 51 (see fig. 13).

In each of the end regions 57a and 57b of the second frame 55 of the present embodiment, four second inner ribs 70 are provided in parallel with each other with a substantially constant distance therebetween. In each end region 57a, 57b, the four second inner ribs 70 are connected to each other by the auxiliary rib 62. Each of the second inner ribs 70 is formed integrally with the auxiliary rib 62. The back surface of each second inner rib 70 is located on the same plane as the back surface of the auxiliary rib 62.

The second holding ribs 71a, 71b are formed in straight bar shapes and extend in a direction substantially orthogonal to the second inner rib 70. The second holding ribs 71a, 71b are formed to extend from one to the other of the adjacent second inner ribs 70. In other words, the second holding ribs 71a, 71b traverse the portion between the adjacent second inner ribs 70 in the second flow path 51.

As shown in fig. 9 and 10, between the adjacent second inner ribs 70, the second holding ribs 71a, 71b are arranged one each on the front side and the back side of the second frame 55. The surface of the second holding rib 71a on the surface side of the second frame 55 is located on the same plane as the surfaces of the second inner rib 70 and the closing part 61. The back surface of the second holding rib 71b on the back surface side of the second frame 55 is flush with the second inner rib 70 and the back surface of the closing section 61.

As shown in fig. 13, the second holding ribs 71a, 71b are provided along the first inner rib 40 of the first frame 25. The second holding ribs 71a and 71b overlap the first inner ribs 40 of the adjacent first frames 25 over the entire length thereof in a plan view. The second holding rib 71a on the front side of the second frame 55 and the second holding rib 71b on the back side thereof are provided at positions that do not overlap each other in plan view.

The thickness of each of the second holding ribs 71a, 71b is less than half the thickness of the second inner rib 70. The second holding rib 71a on the front side of the second frame 55 and the second holding rib 71b on the back side thereof are separated in the thickness direction of the second inner rib 70.

Second flow path inner rib, second support rib

As shown in fig. 8 to 10, the second frame 55 includes a second flow path inner rib 75 and second support ribs 76a and 76 b. The second flow path inner rib 75 and the second support ribs 76a, 76b are provided in the central region 56 of the second frame 55.

The second flow path inner rib 75 is formed in a straight rod shape and extends in a direction parallel to the long side of the central region 56. In other words, the second flow path inner rib 75 extends from the one end portion 57a toward the other end portion 57 b. The height of the second flow path inner rib 75 is substantially equal to the thickness of the second flow path 51 (see fig. 15). In the central area 56 of the second frame 55 of the present embodiment, nine second flow path inner ribs 75 are provided in parallel with each other with a substantially constant distance therebetween.

As shown in fig. 8 and 15, the second support ribs 76a and 76b are formed in straight rod shapes and extend in a direction substantially orthogonal to the second flow path inner rib 75. The second support ribs 76a, 76b are formed to extend from one to the other of the adjacent second flow path inner ribs 75. In other words, the second support ribs 76a, 76b intersect portions of the second flow path 51 between the adjacent second flow path inner ribs 75.

As shown in fig. 15, between the adjacent second flow path inner ribs 75, the second support ribs 76a, 76b are arranged one each on the front side and the back side of the second frame 55. The surface of the second support rib 76a on the surface side of the second frame 55 is flush with the surfaces of the second flow path inner rib 75 and the closing part 61. The rear surface of the second support rib 76b on the rear surface side of the second frame 55 is flush with the rear surfaces of the first flow path inner rib 45 and the closing portion 61.

The thickness of each of the second support ribs 76a, 76b is less than half the thickness of the second flow path inner rib 75. The second support rib 76a on the front side of the second frame 55 and the second support rib 76b on the back side thereof are separated in the thickness direction of the second flow path inner rib 75. The second support rib 76a on the front side of the second frame 55 and the second support rib 76b on the back side thereof are provided at positions that do not overlap each other in plan view.

Retaining structure for the partition

The first member 20 has a spacer 15 bonded to the back of the first frame 25. Specifically, the separator 15 is bonded to the back surface of the closing portion 31 and the back surface of the auxiliary rib 32 in the frame portion 30 of the first frame 25 (see fig. 12, 14, and 16). In the closing portion 31, the separator 15 is bonded to the wall surface of the concave stripe portion 35. The wall surface of the concave portion 35 is covered with the partition 15. In each end region 27a, 27b of the first frame 25, the separator 15 is bonded to the first inner rib 40 and the first holding rib 41b on the back side. In the central region 26 of the first frame 25, the partition 15 is bonded to the first flow path inner rib 45 and the first support rib 46b on the back side.

The second member 50 has a spacer 15 bonded to the back of the second frame 55. Specifically, the partition plate 15 is bonded to the back surface of the closing portion 61 and the back surface of the auxiliary rib 62 in the frame portion 60 of the second frame 55 (see fig. 12, 14, and 16). In the closing portion 61, the separator 15 is bonded to the wall surface of the concave stripe portion 65. The wall surface of the concave portion 65 is covered with the partition 15. The separator 15 is bonded to the second inner rib 70 and the second holding rib 71b on the back side in the end regions 57a and 57b of the second frame 55. In the central area 56 of the second frame 55, the partition 15 is bonded to the second flow path inner rib 75 and the second support rib 76b on the back side.

In the heat exchanger 10, a plurality of first elements 20 and a plurality of second elements 50 are alternately stacked. The partition 15 of each element 20, 50 is sandwiched by the adjacent first frame 25 and second frame 55.

Holding structure (1) of sub heat exchanging section

As shown in fig. 11, in the portions of the sub heat exchange portions 12a and 12b of the heat exchanger 10 where the first communication opening 22 is formed, the portions of the outer ribs 33 of the first frame 25 extending along the first communication opening 22 are fitted into the concave portions 65 of the closing portions 61 of the adjacent second frames 55 located on the front surface side of the first frame 25. In the closing portion 61 of the second frame 55, the wall surface of the concave stripe portion 65 is covered with the partition 15. Therefore, the separator 15 bonded to the closing portion 61 of the second frame 55 is sandwiched between the surface of the outer rib 33 of the first frame 25 and the wall surface of the recessed portion 65 of the second frame 55. In this way, the spacer 15 of the second element 50 is bonded to the closed portion 61 of the second frame 55, and is sandwiched by the outer rib 33 of the first frame 25 and the closed portion 61 of the second frame 55.

In the portions of the sub heat exchange portions 12a, 12b of the heat exchanger 10 where the first communication opening 22 is formed, the back surface of the auxiliary rib 32 of the first frame 25 faces the surface of the closing portion 61 of the adjacent second frame 55 located on the back surface side of the first frame 25. In the first frame 25, the back surface of the auxiliary rib 32 is covered with the partition 15. Therefore, the separator 15 bonded to the auxiliary rib 32 of the first frame 25 is sandwiched between the back surface of the auxiliary rib 32 of the first frame 25 and the surface of the closing portion 61 of the second frame 55. In this way, the separator 15 of the first member 20 is bonded to the auxiliary rib 32 of the first frame 25, and is sandwiched by the auxiliary rib 32 of the first frame 25 and the closed portion 61 of the second frame 55.

In the sub heat exchange units 12a and 12b of the heat exchanger 10, the surface of the first holding rib 41a on the front surface side of the first frame 25 faces the back surface of the second inner rib 70 of the adjacent second frame 55 located on the front surface side of the first frame 25. In the second frame 55, the separator 15 is bonded to the back surface of the second inner rib 70. Therefore, the separator 15 bonded to the second inner rib 70 of the second frame 55 is sandwiched between the surface of the first holding rib 41a of the first frame 25 and the back surface of the second inner rib 70 of the second frame 55. In this way, the spacer 15 of the second member 50 is bonded to the second inner rib 70 of the second frame 55, and is sandwiched by the first holding rib 41a of the first frame 25 and the second inner rib 70 of the second frame 55.

In the sub heat exchange portions 12a and 12b of the heat exchanger 10, the back surface of the first holding rib 41b on the back surface side of the first frame 25 faces the surface of the second inner rib 70 of the adjacent second frame 55 located on the back surface side of the first frame 25. In the first frame 25, the separator 15 is bonded to the back surface of the first holding rib 41 b. Therefore, the separator 15 bonded to the first holding rib 41b of the first frame 25 is sandwiched between the back surface of the first holding rib 41a of the first frame 25 and the surface of the second inner rib 70 of the second frame 55. In this way, the separator 15 of the first member 20 is bonded to the first holding rib 41b of the first frame 25, and is sandwiched by the first holding rib 41a of the first frame 25 and the second inside rib 70 of the second frame 55.

Holding structure (2) of sub heat exchanging section

As shown in fig. 13, in the portions of the sub heat exchange portions 12a and 12b of the heat exchanger 10 where the second communication openings 52 are formed, the portions of the outer ribs 63 of the second frame 55 extending along the second communication openings 52 fit into the recessed portions 35 of the closing portions 31 of the adjacent first frames 25 on the front surface side of the second frame 55. In the closing portion 31 of the first frame 25, the wall surface of the concave stripe portion 35 is covered with the partition 15. Therefore, the separator 15 bonded to the closing portion 31 of the first frame 25 is sandwiched between the surface of the outer rib 63 of the second frame 55 and the wall surface of the recessed portion 35 of the first frame 25. In this way, the separator 15 of the first member 20 is bonded to the closing portion 31 of the first frame 25, and is sandwiched by the outer rib 63 of the second frame 55 and the closing portion 31 of the first frame 25.

In the portions of the sub heat exchange portions 12a and 12b of the heat exchanger 10 where the second communication openings 52 are formed, the back surfaces of the auxiliary ribs 62 of the second frame 55 face the surfaces of the closing portions 31 of the adjacent first frames 25 positioned on the back surface side of the second frame 55. In the second frame 55, the back surface of the auxiliary rib 62 is covered with the partition 15. Therefore, the separator 15 bonded to the auxiliary rib 62 of the second frame 55 is sandwiched between the back surface of the auxiliary rib 62 of the second frame 55 and the surface of the closing portion 31 of the first frame 25. In this way, the spacer 15 of the second member 50 is bonded to the auxiliary rib 62 of the second frame 55, and is sandwiched by the auxiliary rib 62 of the second frame 55 and the closing portion 31 of the first frame 25.

In the sub heat exchange units 12a and 12b of the heat exchanger 10, the surface of the second holding rib 71a on the front surface side of the second frame 55 faces the back surface of the first inner rib 40 of the adjacent first frame 25 positioned on the front surface side of the second frame 55. In the first frame 25, the separator 15 is bonded to the back surface of the first inner rib 40. Therefore, the separator 15 bonded to the first inner rib 40 of the first frame 25 is sandwiched between the surface of the second holding rib 71a of the second frame 55 and the back surface of the first inner rib 40 of the first frame 25. In this way, the separator 15 of the first member 20 is bonded to the first inner rib 40 of the first frame 25, and is sandwiched by the second holding rib 71a of the second frame 55 and the first inner rib 40 of the first frame 25.

In the sub heat exchange portions 12a and 12b of the heat exchanger 10, the rear surface of the second holding rib 71b on the rear surface side of the second frame 55 faces the surface of the first inner rib 40 of the adjacent first frame 25 positioned on the rear surface side of the second frame 55. In the second frame 55, the separator 15 is bonded to the back surface of the second holding rib 71 b. Therefore, the separator 15 bonded to the second holding rib 71b of the second frame 55 is sandwiched between the back surface of the second holding rib 71a of the second frame 55 and the surface of the first inner rib 40 of the first frame 25. In this way, the spacer 15 of the second member 50 is bonded to the second holding rib 71b of the second frame 55, and is sandwiched by the second holding rib 71a of the second frame 55 and the first inner rib 40 of the first frame 25.

Main heat exchange portion holding structure

In the main heat exchanger 11 of the heat exchanger 10, the rear surface of the first flow path inner rib 45 of the first frame 25 faces the surface of the second flow path inner rib 75 of the adjacent second frame 55 located on the rear surface side of the first frame 25. In the first frame 25, the separator 15 is bonded to the back surface of the first flow path inner rib 45. Therefore, the partition 15 bonded to the first flow path inner rib 45 of the first frame 25 is sandwiched between the back surface of the first flow path inner rib 45 of the first frame 25 and the surface of the second flow path inner rib 75 of the second frame 55. In this way, the partition 15 of the first member 20 is bonded to the first inner rib 40 of the first frame 25 and sandwiched by the first inner rib 40 of the first frame 25 and the second flow path inner rib 75 of the second frame 55.

In the main heat exchange portion 11 of the heat exchanger 10, the back surface of the first support rib 46b on the back surface side of the first frame 25 faces the surface of the second support rib 76a on the front surface side of the adjacent second frame 55 on the back surface side of the first frame 25. In the first frame 25, the separator 15 is bonded to the back surface of the first support rib 46 b. Therefore, the partition 15 bonded to the first support rib 46b of the first frame 25 is sandwiched between the back surface of the first support rib 46b of the first frame 25 and the surface of the second support rib 76a of the second frame 55. In this way, the partition 15 of the first member 20 is bonded to the first support rib 46b of the first frame 25, and is sandwiched by the first support rib 46b of the first frame 25 and the second support rib 76a of the second frame 55.

In the main heat exchanger 11 of the heat exchanger 10, the rear surface of the second flow path inner rib 75 of the second frame 55 faces the surface of the first flow path inner rib 45 of the adjacent first frame 25 positioned on the rear surface side of the second frame 55. In the second frame 55, the separator 15 is bonded to the back surface of the second flow path inner rib 75. Therefore, the partition 15 bonded to the second flow path inner rib 75 of the second frame 55 is sandwiched between the back surface of the second flow path inner rib 75 of the second frame 55 and the surface of the first flow path inner rib 45 of the first frame 25. In this way, the partition 15 of the second member 50 is bonded to the second inner rib 70 of the second frame 55, and is sandwiched by the second inner rib 70 of the second frame 55 and the first flow path inner rib 45 of the first frame 25.

In the main heat exchange portion 11 of the heat exchanger 10, the rear surface of the second support rib 76b on the rear surface side of the second frame 55 faces the surface of the first support rib 46a on the front surface side of the adjacent first frame 25 on the rear surface side of the second frame 55. In the second frame 55, the separator 15 is bonded to the back surface of the second support rib 76 b. Therefore, the separators 15 bonded to the second support ribs 76b of the second frame 55 are sandwiched between the back surfaces of the second support ribs 76b of the second frame 55 and the surfaces of the first support ribs 46a of the first frame 25. In this way, the partition 15 of the second member 50 is bonded to the second support rib 76b of the second frame 55, and is sandwiched by the second support rib 76b of the second frame 55 and the first support rib 46a of the first frame 25.

Feature (1) of the first embodiment

The heat exchanger 10 of the present embodiment includes a plurality of separators 15 in a flat sheet shape, and frames 25, 55 alternately stacked with the separators 15 and maintaining the pitch between adjacent separators 15. In the heat exchanger 10, the first flow path 21 and the second flow path 51 are alternately formed with the separator 15 interposed therebetween. The frames 25, 55 have frame portions 30, 60 extending along the peripheral edge of the partition 15.

The frame portions 30, 60 have convex strip portions 34, 64 and concave strip portions 35, 65. The raised strips 34, 64 are formed on the surface of the separator 15 that is positioned in one of the stacking directions, and extend in the direction in which the frame portions 30, 60 extend. The concave portions 35, 65 are formed on the surface of the separator 15 located in the other direction of the stacking direction, and extend in the extending direction of the frame portions 30, 60.

In the heat exchanger 10, the convex strip portions 34, 64 of one of the adjacent frames 25, 55 are fitted into the concave strip portions 35, 65 of the other. The partition 15 is sandwiched between the convex strip portions 34, 64 of one of the first frame 25 and the second frame 55 adjacent to the partition 15 and the concave strip portions 35, 65 of the other.

In the heat exchanger 10 of the present embodiment, the separators 15 and the frames 25 and 55 are alternately stacked, and the first flow path 21 and the second flow path 51 are alternately formed. In the heat exchanger 10, the supply air flowing in the first flow path 21 and the exhaust air flowing in the second flow path 51 exchange sensible heat and latent heat (moisture) through the partition 15.

In the heat exchanger 10 of the present embodiment, the convex portions 34, 64 of one of the two adjacent frames 25, 55 are fitted into the concave portions 35, 65 of the other. The partition 15 is sandwiched between the concave portions 35, 65 and the convex portions 34, 64 which are fitted to each other. As a result, the bulkhead 15 can be held by the first frame 25 and the second frame 55 located on both sides thereof. Further, the gap between the partition 15 and the frames 25, 55 can be sealed.

According to the present embodiment, even when problems such as poor adhesion or deterioration of the adhesive occur, the first frame 25 and the second frame 55 located on both sides of the separator 15 can hold the separator 15, and the gap between the separator 15 and the frames 25 and 55 can be sealed.

Therefore, according to the present embodiment, it is possible to prevent the partition 15, which is no longer held by the frames 25 and 55, from blocking the air flow. Further, according to the present embodiment, it is possible to prevent air from entering one of the first flow path 21 and the second flow path 51 from the other through the gap between the partition 15 and the frames 25, 55. As a result, the reliability of the heat exchanger 10 can be improved.

Feature (2) of the first embodiment

In the heat exchanger 10 of the present embodiment, the convex portions 34, 64 and the concave portions 35, 65 are formed in the outermost peripheral portions of the frame portions 30, 60, respectively.

In the first frame 25 and the second frame 55, the convex portions 34, 64 and the concave portions 35, 65 are formed at the outermost peripheral portions of the frame portions 30, 60 extending along the peripheral edge of the partition plate 15, respectively.

Feature (3) of the first embodiment

In the heat exchanger 10 of the present embodiment, the frame portions 30 and 60 have the communication openings 22 and 52 and the auxiliary ribs 32 and 62. The connection openings 22 and 52 communicate the first channel 21 or the second channel 51 surrounded by the frame portions 30 and 60 with the outside of the frame portions 30 and 60. The auxiliary ribs 32, 62 extend along the communication openings 22, 52 and face the frame portions 30, 60 of the other adjacent frames 25, 55. The partition 15 is sandwiched between the auxiliary ribs 32, 62 of one of the first frame 25 and the second frame 55 adjacent to the partition 15 and the frame portions 30, 60 of the other.

In the heat exchanger 10 of the present embodiment, the partition plate 15 is sandwiched between the auxiliary ribs 32, 62 of one of the adjacent first frame 25 and second frame 55 and the frame portions 30, 60 of the other. As a result, even in the portion of the frames 25 and 55 where the communication openings 22 and 52 are formed, the partition 15 can be held by the first frame 25 and the second frame 55 located on both sides of the partition 15. In addition, the gap between the partition plate 15 and the frames 25 and 55 can be sealed even in the portion of the frames 25 and 55 where the communication openings 22 and 52 are formed.

Feature (4) of the first embodiment

The heat exchanger 10 of the present embodiment includes a plurality of separators 15 in a flat sheet shape, and frames 25, 55 alternately stacked with the separators 15 and maintaining the pitch between adjacent separators 15. In the heat exchanger 10, the first flow path 21 and the second flow path 51 are alternately formed with the separator 15 interposed therebetween. The frames 25, 55 have frame portions 30, 60 extending along the peripheral edge of the partition 15.

The frame portions 30, 60 have the connecting openings 22, 52 and the auxiliary ribs 32, 62. The connection openings 22 and 52 communicate the first channel 21 or the second channel 51 surrounded by the frame portions 30 and 60 with the outside of the frame portions 30 and 60. The auxiliary ribs 32, 62 extend along the communication openings 22, 52 and face the frame portions 30, 60 of the other adjacent frames 25, 55. The partition 15 is sandwiched between the auxiliary ribs 32, 62 of one of the first frame 25 and the second frame 55 adjacent to the partition 15 and the frame portions 30, 60 of the other.

In the heat exchanger 10 of the present embodiment, the separators 15 and the frames 25 and 55 are alternately stacked, and the first flow path 21 and the second flow path 51 are alternately formed. In the heat exchanger 10, the supply air flowing in the first flow path 21 and the exhaust air flowing in the second flow path 51 exchange sensible heat and latent heat (moisture) through the partition 15.

In the heat exchanger 10 of the present embodiment, the partition plate 15 is sandwiched between the auxiliary ribs 32, 62 of one of the adjacent first frame 25 and second frame 55 and the frame portions 30, 60 of the other. As a result, the partition 15 can be held by the first frame 25 and the second frame 55 located on both sides of the partition 15. Further, the gap between the partition 15 and the frames 25, 55 can be sealed.

Feature (5) of the first embodiment

In the heat exchanger 10 of the present embodiment, the frame portions 30, 60 of the frames 25, 55 have the outer ribs 33, 63. The outer ribs 33, 63 of the frames 25, 55 project from the surfaces facing the auxiliary ribs 32, 62 of the other adjacent frames 25, 55, and extend along the outer sides of the auxiliary ribs 32, 62. The projecting end faces of the outer ribs 33, 63 of the frames 25, 55 are flush with the face of the auxiliary ribs 32, 62 of the frames 25, 55 adjacent in the projecting direction of the outer ribs 33, 63, which is opposite to the separator 15.

In the heat exchanger 10 of the present embodiment, the outer ribs 33, 63 are provided along the outer sides of the auxiliary ribs 32, 62 in the frame portions 30, 60 of the frames 25, 55. The protruding end face of the outside rib 33, 63 of the frame 25, 55 faces the first flow path 21 or the second flow path 51 formed by the adjacent frame 25, 55 in the protruding direction (i.e., the front surface side) of the outside rib 33, 63. In the frames 25 and 55, the surfaces (i.e., surfaces) of the auxiliary ribs 32 and 62 on the opposite side from the separator 15 face the first flow path 21 or the second flow path 51 formed by the frames 25 and 55.

In the heat exchanger 10 of the present embodiment, the projecting end faces of the outer ribs 33, 63 of the frames 25, 55 are flush with the face of the auxiliary ribs 32, 62 of the frames 25, 55 adjacent in the projecting direction of the outer ribs 33, 63, which is opposite to the separator 15. Therefore, in the first flow path 21 or the second flow path 51 formed by the adjacent frames 25 and 55, air can smoothly flow in the vicinity of the communication openings 22 and 52 communicating therewith.

Feature (6) of the first embodiment

In the heat exchanger 10 of the present embodiment, the frame portions 30, 60 of the frames 25, 55 have the outer ribs 33, 63. The outer ribs 33, 63 extend along the outer periphery of the frame 25, 55 over the entire periphery of the frame 25, 55.

In the heat exchanger 10 of the present embodiment, the outer ribs 33, 63 are provided on the frame portions 30, 60 of the frames 25, 55. The outer ribs 33, 63 are formed along the outer peripheries of the frames 25, 55 over the entire peripheries of the frames 25, 55. Therefore, the strength and rigidity of the frames 25 and 55 can be ensured as compared with the case where the frames 30 and 60 are cut halfway.

Feature (7) of the first embodiment

In the heat exchanger 10 of the present embodiment, the frame portions 30, 60 of the frames 25, 55 have the outer ribs 33, 63. The outer ribs 33, 63 extend along the communication openings 22, 52, and are located outside the auxiliary ribs 32, 62 as a whole.

In the heat exchanger 10 of the present embodiment, the outer ribs 33, 63 are provided on the frame portions 30, 60 of the frames 25, 55. The entire portions of the outer ribs 33, 63 extending along the communication openings 22, 52 are located outside the auxiliary ribs 32, 62.

In the frames 25 and 55 of the present embodiment, the outer ribs 33 and 63 do not overlap the auxiliary ribs 32 and 62 in a plan view. Therefore, the injection mold used for manufacturing the frames 25 and 55 can be a simple mold divided into the front side and the back side of the frames 25 and 55. Therefore, according to the present embodiment, the outer ribs 33, 63 and the auxiliary ribs 32, 62 can be formed on the frame portions 30, 60 of the frames 25, 55 without increasing the manufacturing cost of the frames 25, 55.

Feature (8) of the first embodiment

In the heat exchanger 10 of the present embodiment, the side surface formed by the outer peripheral surfaces of the plurality of frames 25 and 55 stacked together is a flat surface.

In the heat exchanger 10 of the present embodiment, the side surface of the heat exchanger 10 is a flat surface. Therefore, when the heat exchanger 10 is incorporated into the ventilator, the sealing between the structural members of the ventilator and the side surfaces of the heat exchanger 10 can be easily performed. As a result, the ease of use of the heat exchanger 10 is improved.

Feature (9) of the first embodiment

The heat exchanger 10 of the present embodiment includes a plurality of separators 15 in a flat sheet shape, and frames 25, 55 alternately stacked with the separators 15 and maintaining the pitch between adjacent separators 15. In the heat exchanger 10, the first flow path 21 and the second flow path 51 are alternately formed with the separator 15 interposed therebetween. The frames 25, 55 have frame portions 30, 60 extending along the peripheral edge of the partition 15.

The first frame 25, which is a frame forming the first flow path 21, includes the first connection-purpose opening 22 and the first inner rib 40. The first communication opening 22 is formed in the frame portion 30 of the first frame 25, and communicates the first flow path 21 surrounded by the frame portion 30 with the outside of the frame portion 30. The first inner ribs 40 extend from the first communication opening 22 in a direction intersecting the first communication opening 22, and contact the partition plates 15 on both sides of the first frame 25.

The second frame 55, which is a frame forming the second flow path 51, includes the second communication opening 52 and the second inner rib 70. The second communication opening 52 is formed in the frame portion 60 of the second frame 55, and communicates the second flow path 51 surrounded by the frame portion 60 with the outside of the frame portion 60. The second inner rib 70 extends from the second communication opening 52 in a direction intersecting the second communication opening 52, and contacts the partition 15 on both sides of the second frame 55.

The first frame 25 further includes first retaining ribs 41a, 41 b. The first holding ribs 41a, 41b intersect the first inner rib 40 and extend in the direction of the second inner rib 70 of the second frame 55, and the partition plate 15 is sandwiched between the first holding ribs 41a, 41b and the second inner rib 70 of the second frame 55 located at an adjacent position.

The second frame 55 further includes second holding ribs 71a, 71 b. The second holding ribs 71a, 71b intersect the second inner rib 70 and extend in the direction of the first inner rib 40 of the first frame 25, and the partition plate 15 is sandwiched between the second holding ribs 71a, 71b and the first inner rib 40 of the first frame 25 located at an adjacent position.

In the heat exchanger 10 of the present embodiment, the separators 15 and the frames 25 and 55 are alternately stacked, and the first flow path 21 and the second flow path 51 are alternately formed. Each partition 15 is sandwiched between the first frame 25 and the second frame 55. In the heat exchanger 10, the supply air flowing in the first flow path 21 and the exhaust air flowing in the second flow path 51 exchange sensible heat and latent heat (moisture) through the partition 15.

In the heat exchanger 10 of the present embodiment, the first frame 25 includes the first inner rib 40 and the first holding ribs 41a, 41 b. The first inner rib 40 and the first holding ribs 41a, 41b are located in the first flow path 21. On the other hand, the second frame 55 includes a second inner rib 70 and second holding ribs 71a, 71 b. The second inner rib 70 and the second holding ribs 71a, 71b are located in the second flow path 51.

In the heat exchanger 10 of the present embodiment, the first holding ribs 41a, 41b of the first frame 25 extend along the second inner rib 70 of the second frame 55. Further, the second holding ribs 71a, 71b of the second frame 55 extend along the first inner rib 40 of the first frame 25. The partition plate 15 that partitions the first flow path 21 and the second flow path 51 is sandwiched between the adjacent first holding ribs 41a and 41b and the second inner rib 70, and is sandwiched between the adjacent second holding ribs 71a and 71b and the first inner rib 40. As a result, the portions of the partition 15 located inside the frame portions 30, 60 of the frames 25, 55 are held by the adjacent first holding ribs 41a, 41b and second inner rib 70, and held by the adjacent second holding ribs 71a, 71b and first inner rib 40.

According to the present embodiment, even when problems such as poor adhesion or deterioration of the adhesive occur, the separator 15 can be held by the frames 25 and 55 on both sides of the separator 15. Therefore, according to the present embodiment, it is possible to prevent the partition 15, which is no longer held by the frames 25 and 55, from blocking the air flow. As a result, the reliability of the heat exchanger 10 can be improved.

Features (10) of the first embodiment

In the heat exchanger 10 of the present embodiment, the first frame 25 includes the first holding rib 41a on one side in contact with one of the two separators 15 adjacent to the first frame 25 and the first holding rib 41b on the other side in contact with the other of the two separators 15 adjacent to the first frame 25. Further, in the heat exchanger 10, the second frame 55 includes the second holding rib 71a on one side in contact with one of the two separators 15 adjacent to the second frame 55 and the second holding rib 71b on the other side in contact with the other of the two separators 15 adjacent to the second frame 55.

In the heat exchanger 10 of the present embodiment, one of the two separators 15 adjacent to the first frame 25 is sandwiched and held by the first holding rib 41a on one side and the second inner rib 70 adjacent to the first holding rib 41 a. The other of the two separators 15 adjacent to the first frame 25 is sandwiched and held by the first holding rib 41b on the other side and the second inner rib 70 adjacent to the first holding rib 41 b.

In the heat exchanger 10 of the present embodiment, one of the two separators 15 adjacent to the second frame 55 is sandwiched and held by the second holding rib 71a on one side and the first inner rib 40 adjacent to the second holding rib 71 a. The other of the two separators 15 adjacent to the second frame 55 is sandwiched and held by the second holding rib 71b on the other side and the first inner rib 40 adjacent to the second holding rib 71 b.

As described above, in the heat exchanger 10 of the present embodiment, the portions of the respective separators 15 located in the main heat exchange portion 11 of the heat exchanger 10 are reliably held by being sandwiched between the adjacent first support ribs 46a, 46b and second support ribs 76a, 76 b.

Feature (11) of the first embodiment

In the heat exchanger 10 of the present embodiment, the first frame 25 includes the first flow path inner rib 45 and the first support ribs 46a and 46 b. The first flow channel inner rib 45 is provided in the first flow channel 21 surrounded by the frame portion 30 of the first frame 25, and is in contact with the two separators 15 adjacent to the first frame 25. The first support ribs 46a, 46b extend in a direction intersecting the first flow path inner rib 45, and are in contact with one of the separators 15 located at adjacent positions of the first frame 25.

In the heat exchanger 10 of the present embodiment, the second frame 55 includes the second in-flow-path rib 75 and the second support ribs 76a and 76 b. The second flow path inner ribs 75 are provided in the second flow path 51 surrounded by the frame portion 60 of the second frame 55, extend along the first flow path inner ribs 45 of the first frame 25, and contact the two separators 15 adjacent to the second frame 55. The second support ribs 76a, 76b extend in a direction intersecting the second flow path inner rib 75, and are in contact with one of the partition plates 15 located at adjacent positions of the second frame 55.

In the heat exchanger 10 of the present embodiment, the first frame 25 is provided with the first inner flow path ribs 45, and the second frame 55 is provided with the second inner flow path ribs 75. The first flow path inner rib 45 is in contact with the two separators 15 located on both sides of the first frame 25. The second flow path inner rib 75 is in contact with the two separators 15 located on both sides of the second frame 55. Further, the second flow path inner rib 75 extends along the first flow path inner rib 45. Therefore, the partition plate 15 positioned between the first frame 25 and the second frame 55 is sandwiched by the first flow path inner rib 45 and the second flow path inner rib 75.

In the heat exchanger 10 of the present embodiment, the first support ribs 46a and 46b are provided in the first frame 25, and the second support ribs 76a and 76b are provided in the second frame 55. The first support ribs 46a, 46b contact a partition 15 adjacent to the first frame 25 and support the partition 15. The second support ribs 76a, 76b contact a partition 15 adjacent to the second frame 55 and support the partition 15.

(second embodiment)

Next, a second embodiment will be explained. The heat exchanger 10 of the present embodiment is obtained by modifying the first frame 25 and the second frame 55 in addition to the heat exchanger 10 of the first embodiment. Here, the differences between the heat exchanger 10 of the present embodiment and the heat exchanger 10 of the first embodiment will be described.

A first frame, a second frame

As shown in fig. 17 to 20, in the first frame 25 and the second frame 55, linear convex portions 36 and 66 are formed on the auxiliary ribs 32 and 62, respectively, and linear concave portions 37 and 67 are formed on the closing portions 31 and 61, respectively. Specifically, in the first frame 25, a linear convex portion 36 is formed on the auxiliary rib 32, and a linear concave portion 37 is formed on the closing portion 31. In the second frame 55, a linear convex portion 66 is formed on the auxiliary rib 62, and a linear concave portion 67 is formed on the closing portion 61.

The linear protrusions 36, 66 extend along the outer side surfaces of the auxiliary ribs 32, 62, and protrude from the back surfaces of the auxiliary ribs 32, 62. The linear protrusions 36, 66 are formed over the entire length of the auxiliary ribs 32, 62. The linear protrusions 36, 66 have a rectangular cross-sectional shape. The outer side surfaces of the linear protrusions 36, 66 and the outer side surfaces of the auxiliary ribs 32, 62 form a plane together. The separator 15 is bonded to the projecting end surfaces (lower surfaces in fig. 17 to 20) and the inner side surfaces of the linear protrusions 36 and 66.

The linear recesses 37 and 67 are grooves that open on the surfaces of the closing portions 31 and 61. The linear recesses 37, 67 are also linear grooves extending along the inner surfaces of the raised strips 34, 64.

In the first frame 25, a linear recess 37 is formed in a portion of the closing portion 31 that faces the auxiliary rib 62 of the second frame 55. The cross-sectional shape of the linear recessed portion 37 corresponds to the cross-sectional shape of the linear protruding portion 66 of the second frame 55. The linear protrusion 66 of the second frame 55 is fitted into the linear recess 37 of the first frame 25.

In the second frame 55, a linear recess 67 is formed in a portion of the closing portion 61 facing the auxiliary rib 32 of the first frame 25. The cross-sectional shape of the linear recess 67 corresponds to the cross-sectional shape of the linear protrusion 36 of the first frame 25. The linear protrusion 36 of the first frame 25 is fitted into the linear recess 67 of the second frame 55.

Retaining structure for the partition

As shown in fig. 17, in the portions of the sub heat exchange portions 12a and 12b of the heat exchanger 10 where the first communication opening 22 is formed, the linear convex portion 36 of the first frame 25 is fitted into the linear concave portion 67 of the adjacent second frame 55 located on the back surface side of the first frame 25. The protruding end surface and the inner side surface of the linear protrusion 36 of the first frame 25 are covered with the separator 15. Therefore, the separator 15 bonded to the linear convex portion 36 of the first frame 25 is sandwiched between the protruding end surface of the linear convex portion 36 of the first frame 25 and the wall surface of the linear concave portion 67 of the second frame 55. In this way, the spacer 15 of the first element 20 is bonded to the linear protrusion 36 of the first frame 25, and is sandwiched between the linear protrusion 36 of the first frame 25 and the wall surface of the linear recess 67 of the second frame 55.

As shown in fig. 19, in the portions of the sub heat exchange portions 12a and 12b of the heat exchanger 10 where the second communication openings 52 are formed, the linear convex portions 66 of the second frame 55 are fitted into the linear concave portions 37 of the adjacent first frames 25 positioned on the back side of the second frame 55. The protruding end surface and the inner side surface of the linear projection 66 of the second frame 55 are covered with the partition 15. Therefore, the separator 15 bonded to the linear protrusion 66 of the second frame 55 is sandwiched between the protruding end surface of the linear protrusion 66 of the second frame 55 and the wall surface of the linear recess 37 of the first frame 25. In this way, the spacer 15 of the second element 50 is bonded to the linear protrusion 66 of the second frame 55, and is sandwiched between the linear protrusion 66 of the second frame 55 and the wall surface of the linear recess 37 of the first frame 25.

Feature (1) of the second embodiment

In the heat exchanger 10 of the present embodiment, the auxiliary ribs 32, 62 of the frames 25, 55 have linear protrusions 36, 66. The linear protrusions 36, 66 extend along the auxiliary ribs 32, 62. The linear protrusions 36, 66 protrude toward the other frames 25, 55 which the auxiliary ribs 32, 62 face. In the heat exchanger 10, linear recesses 37 and 67 are formed in the frame portions 30 and 60 of the frames 25 and 55. The linear protrusions 36 and 66 of the adjacent other frames 25 and 55 are fitted into the linear recesses 37 and 67.

In the heat exchanger 10 of the present embodiment, the linear protrusions 36, 66 of one of the adjacent first frame 25 and second frame 55 are fitted into the linear recesses 37, 67 of the other. As a result, the gaps between the adjacent first frame 25 and second frame 55 are sealed by the linear protrusions 36 and 66 and linear recesses 37 and 67 that are fitted to each other. The rigidity of the auxiliary ribs 32, 62 is improved by forming the linear protrusions 36, 66 on the auxiliary ribs 32, 62.

Feature (2) of the second embodiment

In the heat exchanger 10 of the present embodiment, the partition plate 15 is sandwiched between the linear convex portions 36, 66 of one of the first frame 25 and the second frame 55 adjacent to the partition plate 15 and the linear concave portions 37, 67 of the other.

In the heat exchanger 10 of the present embodiment, the partition plate 15 positioned between the adjacent first frame 25 and second frame 55 is sandwiched between the linear convex portions 36 and 66 and the linear concave portions 37 and 67 that are fitted to each other. As a result, the partition 15 can be held by the first frame 25 and the second frame 55 located on both sides of the partition 15. Further, the gap between the partition 15 and the frames 25, 55 can be sealed.

(third embodiment)

Next, a third embodiment will be explained. The heat exchanger 10 of the present embodiment is obtained by modifying the first frame 25 and the second frame 55 in addition to the heat exchanger 10 of the first embodiment. Here, the differences between the heat exchanger 10 of the present embodiment and the heat exchanger 10 of the first embodiment will be described.

A first frame

As shown in fig. 21 to 24, in the heat exchanger 10 of the present embodiment, the first frame 25 is provided with the first column section 42. The first pillar portion 42 is provided at each end region 27a, 27b of the first frame 25. In each of the end regions 27a, 27b, the same number of first pillar portions 42 as the first holding ribs 41a on the front surface side and the first holding ribs 41b on the back surface side are provided, respectively.

Each first pillar portion 42 is provided between a pair of first holding ribs 41a, 41b adjacent in the thickness direction of the first frame 25. Each first pillar portion 42 connects a corresponding pair of first holding ribs 41a, 41 b. Each first pillar portion 42 is a small rectangular plate-like member, and is formed integrally with the corresponding pair of first holding ribs 41a, 41 b. The long side of each first pillar portion 42 is substantially orthogonal to the longitudinal direction of the corresponding first holding rib 41a, 41b (the direction orthogonal to the adjacent first inner rib 40). Each first pillar portion 42 is provided substantially at the center in the longitudinal direction of the corresponding first holding rib 41a, 41 b.

A second frame

As shown in fig. 23 and 24, in the heat exchanger 10 of the present embodiment, the second frame 55 is provided with the second column portion 72. The second pillar portion 72 is provided at each end region 57a, 57b of the second frame 55. In each of the end regions 57a and 57b, the same number of second pillar portions 72 as the number of the front-side second holding ribs 71a and the number of the back-side second holding ribs 71b are provided.

Each second pillar portion 72 is provided between a pair of second holding ribs 71a, 71b adjacent in the thickness direction of the second frame 55. Each second pillar portion 72 connects the corresponding pair of second holding ribs 71a, 71 b. Each second pillar portion 72 is a small rectangular plate-like member, and is formed integrally with the corresponding pair of second holding ribs 71a, 71 b. The longer side of each second pillar portion 72 is substantially orthogonal to the longitudinal direction of the corresponding second holding rib 71a, 71b (the direction orthogonal to the adjacent second inner rib 70). Each second pillar portion 72 is provided substantially at the center in the longitudinal direction of the corresponding second holding rib 71a, 71 b.

Features of the third embodiment

In the heat exchanger 10 of the present embodiment, the first frame 25 includes the first column part 42, and the second frame 55 includes the second column part 72. In the first frame 25, the first pillar portion 42 is connected to the first holding rib 41a on one side and the first holding rib 41b on the other side. In the second frame 55, the second pillar portion 72 is connected to the second holding rib 71a on the one side and the second holding rib 71b on the other side.

In the first frame 25 of the present embodiment, the first pillar portion 42 is connected to the first holding rib 41a on one side and the first holding rib 41b on the other side. The first pillar portion 42 can hold the distance between the first holding rib 41a on the one side and the first holding rib 41b on the other side. Therefore, the deflection of the first holding ribs 41a, 41b can be suppressed, and the separator 15 can be held by the first holding ribs 41a, 41b and the second inner rib 70.

In the second frame 55 of the present embodiment, the second pillar portion 72 is connected to the second holding rib 71a on the one side and the second holding rib 71b on the other side. The second pillar portion 72 can hold the distance between the second holding rib 71a on the one side and the second holding rib 71b on the other side. Therefore, the deflection of the second holding ribs 71a, 71b can be suppressed, and the separator 15 can be held by the second holding ribs 71a, 71b and the first inner rib 40.

Modification of the third embodiment

In the heat exchanger 10 of the present embodiment, the column portions may be provided in the central regions 26, 56 of the frames 25, 55. The strut members provided in the central regions 26, 56 are small rectangular plate-like members similar to the strut members 42, 72 provided in the end regions 27a, 27b, 57a, 57 b. In the first frame 25 of the present modification, the corresponding first support ribs 46a on the front side and the corresponding first support ribs 46b on the back side are connected by the strut portions. In the second frame 55 of the present modification, the corresponding front-side second support rib 76a and the corresponding back-side second support rib 76b are connected by the strut portions.

(fourth embodiment)

Next, a fourth embodiment will be explained. The heat exchanger 10 of the present embodiment is obtained by modifying the first frame 25 and the second frame 55 in addition to the heat exchanger 10 of the third embodiment. Here, the differences between the heat exchanger 10 of the present embodiment and the heat exchanger 10 of the third embodiment will be described.

A first frame

As shown in fig. 25 to 28, the first frame 25 of the present embodiment differs from the third embodiment in the shape of the first holding ribs 41a, 41 b.

The first holding rib 41a on the front surface side is formed in a cantilever beam shape protruding from one of the adjacent first inner ribs 40 toward the other. The first holding rib 41a is formed integrally with one of the adjacent first inner ribs 40. The first holding rib 41a has a rectangular plate shape. The protruding ends of the first holding ribs 41a are located near the centers of the adjacent two first inner ribs 40. The width of the first holding rib 41a is substantially equal to the width of the second inner rib 70 of the second frame 55.

The first holding rib 41b on the back side is formed in a cantilever beam shape protruding from the other of the adjacent first inner ribs 40 toward the one. The first holding rib 41b is formed integrally with the other of the adjacent first inner ribs 40. The first holding rib 41b has a rectangular plate shape. The protruding ends of the first holding ribs 41b are located near the centers of the adjacent two first inner ribs 40. The width of the first holding rib 41b is substantially equal to the width of the second inner rib 70 of the second frame 55.

As in the third embodiment, the first pillar portion 42 is a small rectangular plate-like member, and is formed integrally with the corresponding pair of first holding ribs 41a, 41 b. The first pillar portion 42 connects the protruding end portions of the corresponding pair of first holding ribs 41a, 41 b. The first pillar portion 42 is substantially orthogonal to the corresponding pair of first holding ribs 41a, 41 b.

A second frame

As shown in fig. 27 and 28, the second frame 55 according to the present embodiment differs from the third embodiment in the shape of the second holding ribs 71a and 71 b.

The second holding rib 71a on the front surface side is formed in a cantilever beam shape protruding from one of the adjacent second inner ribs 70 toward the other. The second holding rib 71a is formed integrally with one of the adjacent second inner ribs 70. The second holding rib 71a has a rectangular plate shape. The protruding ends of the second holding ribs 71a are located near the centers of the adjacent two second inner ribs 70. The width of the second holding rib 71a is substantially equal to the width of the first inner rib 40 of the first frame 25.

The second holding rib 71b on the back side is formed in a cantilever beam shape protruding from the other of the adjacent second inner ribs 70 toward the one. The second holding rib 71b is formed integrally with the other of the adjacent second inner ribs 70. The second holding rib 71b has a rectangular plate shape. The protruding ends of the second holding ribs 71b are located near the centers of the adjacent two second inner ribs 70. The width of the second holding rib 71b is substantially equal to the width of the first inner rib 40 of the first frame 25.

As in the third embodiment, the second pillar portion 72 is a small rectangular plate-like member, and is formed integrally with the corresponding pair of second holding ribs 71a, 71 b. Each second pillar portion 72 connects the protruding end portions of the corresponding pair of second holding ribs 71a, 71 b. The second pillar portion 72 is substantially orthogonal to the corresponding pair of second holding ribs 71a, 71 b.

Features of the fourth embodiment

In the heat exchanger 10 of the present embodiment, the first frame 25 is provided with a plurality of first inner ribs 40 in parallel with each other. In the first frame 25, between the adjacent first inner ribs 40, the first holding rib 41a on one side protrudes from one of the adjacent first inner ribs 40 toward the other, the first holding rib 41b on the other side protrudes from the other of the adjacent first inner ribs 40 toward the one, and the first pillar portion 42 is connected to the protruding end of the first holding rib 41a on one side and the protruding end of the first holding rib 41b on the other side.

In the heat exchanger 10 of the present embodiment, the second frame 55 is provided with a plurality of second inner ribs 70 parallel to each other. In the second frame 55, between the adjacent second inner ribs 70, the second holding rib 71a on one side protrudes from one of the adjacent second inner ribs 70 toward the other, the second holding rib 71b on the other side protrudes from the other of the adjacent second inner ribs 70 toward the one, and the second pillar portion 72 is connected to the protruding end of the second holding rib 71a on one side and the protruding end of the second holding rib 71b on the other side.

In the first frame 25 of the present embodiment, the first pillar portion 42 is connected to a protruding end of a first holding rib 41a protruding from one of the adjacent first inner ribs 40 and a protruding end of a first holding rib 41b protruding from the other of the first inner ribs 40. The first pillar portion 42 holds the pitch between the projecting end of the first holding rib 41a on the one side and the projecting end of the first holding rib 41b on the other side, and suppresses flexure of the first holding ribs 41a, 41 b.

In addition, in the second frame 55 of the present embodiment, the second pillar portion 72 is connected to a protruding end of the second holding rib 71a protruding from one of the adjacent second inner ribs 70 and a protruding end of the second holding rib 71b protruding from the other of the second inner ribs 70. The second pillar portion 72 holds the pitch between the projecting end of the second holding rib 71a on the one side and the projecting end of the second holding rib 71b on the other side, and suppresses flexure of the second holding ribs 71a and 71 b.

In the first frame 25 of the present embodiment, it is preferable that the angles formed by the pair of corresponding first holding ribs 41a, 41b and the first pillar portion 42 connected to the pair of first holding ribs 41a, 41b are 90 ° or more, respectively. When the angle formed by the first holding ribs 41a, 41b and the first pillar portion 42 is 90 ° or more, a simple mold divided into the front surface side and the back surface side of the first frame 25 can be used as an injection mold used for manufacturing the first frame 25. In this case, therefore, the first holding ribs 41a, 41b and the first pillar portion 42 can be formed in the first frame 25 without increasing the manufacturing cost of the first frame 25.

In the second frame 55 of the present embodiment, it is preferable that the angles (inner angles) formed by the pair of corresponding second holding ribs 71a, 71b and the second pillar portion 72 connected to the pair of second holding ribs 71a, 71b are 90 ° or more, respectively. When the angle formed by the second holding ribs 71a, 71b and the second pillar portion 72 is 90 ° or more, a simple mold divided into the front side and the back side of the second frame 55 can be used as an injection mold used for manufacturing the second frame 55. In this case, therefore, the second holding ribs 71a and 71b and the second pillar portion 72 can be formed in the second frame 55 without increasing the manufacturing cost of the second frame 55.

Modification 1 of the fourth embodiment

In the heat exchanger 10 of the present embodiment, the first frame 25 may be configured as shown in fig. 29 and 30, and the second frame 55 may be configured as shown in fig. 31.

First frame

In the first frame 25 of the present modification, the first holding rib 41a on the front side projecting from the first inner rib 40 and the first holding rib 41b on the back side projecting from the first inner rib 40 are alternately provided in the extending direction of one of the adjacent first inner ribs 40. The front-side first holding rib 41a and the back-side first holding rib 41b protruding from one of the adjacent first inner ribs 40 are respectively formed in a cantilever shape integral with the first inner rib 40.

In the first frame 25 of the present modification, the first holding rib 41b on the back side projecting from the first inner rib 40 and the first holding rib 41a on the front side projecting from the first inner rib 40 are alternately provided in the extending direction of the other of the adjacent first inner ribs 40. The first holding rib 41b on the back side and the first holding rib 41a on the front side, which protrude from the other of the adjacent first inner ribs 40, are respectively formed in a cantilever shape that is integral with the first inner ribs 40.

In the first frame 25 of the present modification, the first pillar portion 42 is also formed integrally with the corresponding pair of first holding ribs 41a and 41b, and connects the protruding end portions of the corresponding pair of first holding ribs 41a and 41 b.

Second frame

In the second frame 55 of the present modification, the second holding rib 71a on the front side protruding from the second inner rib 70 and the second holding rib 71b on the back side protruding from the second inner rib 70 are alternately provided in the extending direction of one of the adjacent second inner ribs 70. The front-side second holding rib 71b and the back-side second holding rib 71b protruding from one of the adjacent second inner ribs 70 are formed in cantilever shapes that are integral with the second inner ribs 70, respectively.

In the second frame 55 of the present modification, the second holding rib 71b on the back side protruding from the second inner rib 70 and the second holding rib 71a on the front side protruding from the second inner rib 70 are alternately provided in the extending direction of the other of the adjacent second inner ribs 70. The second holding rib 71b on the back side and the second holding rib 71a on the front side, which protrude from the other of the adjacent second inner ribs 70, are formed in cantilever shapes that are integral with the second inner ribs 70, respectively.

In the second frame 55 of the present modification, the second pillar portion 72 is also formed integrally with the corresponding pair of second holding ribs 71a, 71b, and connects the protruding end portions of the corresponding pair of second holding ribs 71a, 71 b.

Feature of modification 1

In the heat exchanger 10 of the present modification, the first frame 25 is provided with a plurality of first inner ribs 40 in parallel with each other. Between the adjacent first inner ribs 40 of the first frame 25, a first holding rib 41a of a surface side protruding from one of the adjacent first inner ribs 40 toward the other and the first holding rib 41b of a back side protruding from one of the adjacent first inner ribs 40 toward the other are alternately provided in an elongation direction of one of the adjacent first inner ribs 40. Further, between the adjacent first inner ribs 40 of the first frame 25, a back-side first holding rib 41b protruding from the other of the adjacent first inner ribs 40 toward one and a surface-side first holding rib 41a protruding from the other of the adjacent first inner ribs 40 toward one are alternately provided in the elongation direction of the other of the adjacent first inner ribs 40.

In the heat exchanger 10 of the present modification, the second frame 55 is provided with a plurality of second inner ribs 70 in parallel with each other. Between the adjacent second inner ribs 70 of the second frame 55, a second holding rib 71a of a surface side protruding from one of the adjacent second inner ribs 70 toward the other and a second holding rib 71b of a back side protruding from one of the adjacent second inner ribs 70 toward the other are alternately provided in an elongation direction of one of the adjacent second inner ribs 70. Further, between the adjacent second inner ribs 70 of the second frame 55, a back-side second holding rib 71b protruding from the other of the adjacent second inner ribs 70 toward one and a surface-side second holding rib 71a protruding from the other of the adjacent second inner ribs 70 toward one are alternately provided in the elongation direction of the other of the adjacent second inner ribs 70.

In the first frame 25 of the present modification, the front-side first holding ribs 41a and the back-side first holding ribs 41b protruding from the first inner ribs 40 are alternately provided in the extending direction of one of the adjacent first inner ribs 40. Further, in this first frame 25, the back-side first holding rib 41b and the front-side first holding rib 41a protruding from this first inner rib 40 are alternately provided in the extending direction of the other of the adjacent first inner ribs 40.

In the heat exchanger 10 of the present modification, the separator 15 located on the surface side of the first frame 25 is supported by the first holding rib 41a on the surface side protruding from one of the adjacent first inner ribs 40 and the first holding rib 41a on the surface side protruding from the other of the adjacent first inner ribs 40. Therefore, the partition 15 can be reliably held by the first frame 25, as compared with the case where the partition 15 is supported only by the first holding rib 41a on the surface side protruding from one of the adjacent first inner ribs 40.

In the heat exchanger 10 of the present modification, the separator 15 located on the back side of the first frame 25 is supported by the first holding rib 41b on the back side protruding from one of the adjacent first inner ribs 40 and the first holding rib 41b on the back side protruding from the other of the adjacent first inner ribs 40. Therefore, the separator 15 can be reliably held by the first frame 25, as compared with the case where the separator 15 is supported only by the first holding rib 41b on the back side that protrudes from the other of the adjacent first inner ribs 40.

In the second frame 55 of the present modification, the front-side first holding rib 41a and the back-side first holding rib 41b protruding from the second inner rib 70 are alternately provided in the extending direction of one of the adjacent second inner ribs 70. Further, in this second frame 55, the back-side first holding rib 41b and the front-side first holding rib 41a protruding from this second inner rib 70 are alternately provided in the extending direction of the other of the adjacent second inner ribs 70.

In the heat exchanger 10 of the present modification, the separator 15 located on the surface side of the second frame 55 is supported by the second holding rib 71a on the surface side protruding from one of the adjacent second inner ribs 70 and the second holding rib 71a on the surface side protruding from the other of the adjacent second inner ribs 70. Therefore, the partition 15 can be reliably held by the second frame 55, as compared with a case where the partition 15 is supported only by the second holding rib 71a on the surface side protruding from one of the adjacent second inner ribs 70.

In the heat exchanger 10 of the present modification, the separator 15 located on the back side of the second frame 55 is supported by the second holding rib 71b on the back side protruding from one of the adjacent second inner ribs 70 and the second holding rib 71b on the back side protruding from the other of the adjacent second inner ribs 70. Therefore, the separator 15 can be reliably held by the second frame 55, as compared with the case where the separator 15 is supported only by the second holding rib 71b on the back side protruding from the other of the adjacent second inner ribs 70.

Modification 2 of the fourth embodiment

In each of the frames 25, 55 of the heat exchanger 10 of the present embodiment, the support ribs 46a, 46b, 76a, 76b provided in the central regions 26, 56 may be formed in a cantilever shape like the holding ribs 41a, 41b, 71a, 71b of the end regions 27a, 27 b.

In the first frame 25 of the present modification, between two adjacent first flow path inner ribs 45, the first support rib 46a on the front side projects from one of the two first flow path inner ribs 45 toward the other, and the first support rib 46b on the back side projects from the other of the two first flow path inner ribs 45 toward the one. In the first frame 25, the projecting end of the first support rib 46a on the front side and the projecting end of the first support rib 46b on the back side are connected by a pillar portion. The pillar portion is a small rectangular plate-like member like the first pillar portion 42 provided in the end regions 27a, 27 b.

In the second frame 55 of the present modification, between two adjacent second flow path inner ribs 75, the second support rib 76a on the front side projects from one of the two second flow path inner ribs 75 toward the other, and the second support rib 76b on the back side projects from the other of the two second flow path inner ribs 75 toward the one. In the second frame 55, the projecting end of the front side second support rib 76a and the projecting end of the back side second support rib 76b are connected by a pillar portion. The pillar portion is a small rectangular plate-like member like the second pillar portion 72 provided in the end regions 57a, 57 b.

(fifth embodiment)

Next, a fifth embodiment will be described. The heat exchanger 10 of the present embodiment is obtained by modifying the first frame 25 and the second frame 55 in addition to the heat exchanger 10 of the third embodiment. Here, the differences between the heat exchanger 10 of the present embodiment and the heat exchanger 10 of the third embodiment will be described.

A first frame

As shown in fig. 32 to 35, the first frame 25 of the present embodiment differs from the third embodiment in the shape of the first holding rib 41b on the back side and the shape of the first pillar portion 42. In the first frame 25 of the present embodiment, the first holding rib 41a on the front surface side is omitted.

As in the third embodiment, the first holding rib 41b on the back side is formed to extend from one to the other of the adjacent first inner ribs 40. The first holding rib 41b is formed in a rectangular plate shape. The width of the first holding rib 41b is substantially equal to the width of the second inner rib 70 of the second frame 55.

The first pillar portion 42 is a small rectangular plate-like member, and is formed integrally with the corresponding first holding rib 41 b. As in the third embodiment, the long side of the first pillar portion 42 is substantially orthogonal to the longitudinal direction of the corresponding first holding rib 41 b. The first pillar portion 42 protrudes from the surface of the first holding rib 41 b. The protruding end surface of the first pillar portion 42 is flush with the surfaces of the first inner rib 40 and the closed portion 31.

A second frame

As shown in fig. 34 and 35, the second frame 55 according to the present embodiment differs from the third embodiment in the shape of the second holding rib 71b on the back side and the shape of the second pillar portion 72. In the second frame 55 of the present embodiment, the second holding rib 71a on the front surface side is omitted.

As in the third embodiment, the second holding rib 71b on the back side is formed to extend from one to the other of the adjacent second inner ribs 70. The second holding rib 71b is formed in a rectangular plate shape. The width of the second holding rib 71b is substantially equal to the width of the first inner rib 40 of the first frame 25.

The second support column portion 72 is a small rectangular plate-like member, and is formed integrally with the corresponding second holding rib 71 b. As in the third embodiment, the long side of the second pillar portion 72 is substantially orthogonal to the longitudinal direction of the corresponding second holding rib 71 b. The second pillar portion 72 protrudes from the surface of the second holding rib 71 b. The protruding end surface of the second pillar portion 72 is flush with the surfaces of the second inner rib 70 and the closing portion 61.

Retaining structure for the partition

As shown in fig. 35, in the sub heat exchange portions 12a and 12b of the heat exchanger 10, the protruding end surface of the first column portion 42 of the first frame 25 faces the back surface of the second inner rib 70 of the adjacent second frame 55 located on the front surface side of the first frame 25. In the second frame 55, the separator 15 is bonded to the back surface of the second inner rib 70. Therefore, the separator 15 bonded to the second inner rib 70 of the second frame 55 is sandwiched between the protruding end surface of the first pillar portion 42 of the first frame 25 and the back surface of the second inner rib 70 of the second frame 55. In this way, the spacer 15 of the second element 50 is bonded to the second inner rib 70 of the second frame 55, and is sandwiched between the first pillar portion 42 of the first frame 25 and the second inner rib 70 of the second frame 55.

In the sub heat exchange units 12a and 12b of the heat exchanger 10, the protruding end surface of the second column portion 72 of the second frame 55 faces the back surface of the first inner rib 40 of the adjacent first frame 25 located on the front surface side of the second frame 55. In the first frame 25, the separator 15 is bonded to the back surface of the first inner rib 40. Therefore, the separator 15 bonded to the first inner rib 40 of the first frame 25 is sandwiched between the protruding end surface of the second pillar portion 72 of the second frame 55 and the back surface of the first inner rib 40 of the first frame 25. In this way, the separator 15 of the first element 20 is bonded to the first inner rib 40 of the first frame 25, and is sandwiched between the second pillar portion 72 of the second frame 55 and the first inner rib 40 of the first frame 25.

Features of the fifth embodiment

In the heat exchanger 10 of the present embodiment, the first holding rib 41b of the first frame 25 is in contact with one of the two separators 15 adjacent to the first frame 25. The first frame 25 includes a first strut portion 42. The first pillar portion 42 protrudes from the first holding rib 41 b. The protruding end of the first pillar portion 42 contacts the other of the two separators 15 adjacent to the first frame 25.

In the heat exchanger 10 of the present embodiment, the second holding rib 71b of the second frame 55 is in contact with one of the two separators 15 adjacent to the second frame 55. Second frame 55 includes a second leg portion 72. The second pillar portion 72 protrudes from the second holding rib 71 b. The protruding end of the second pillar portion 72 contacts the other of the two separators 15 adjacent to the second frame 55.

In the first frame 25 of the present embodiment, the first holding rib 41b is in contact with one of the two separators 15 located on both sides of the first frame 25, and the protruding end of the first pillar portion 42 is in contact with the other of the two separators 15 located on both sides of the first frame 25. A partition 15 adjacent to the first frame 25 is sandwiched by the first holding rib 41b and the second inside rib 70 of the second frame 55 in contact with the partition 15. The other separator 15 adjacent to the first frame 25 is sandwiched between the first pillar portion 42 and the second inner rib 70 of the second frame 55 in contact with the separator 15.

In the second frame 55 of the present embodiment, the second holding rib 71b is in contact with one of the two separators 15 located on both sides of the second frame 55, and the protruding end of the second stay portion 72 is in contact with the other of the two separators 15 located on both sides of the second frame 55. A partition 15 adjacent to the second frame 55 is sandwiched by the second holding rib 71b and the first inner rib 40 of the first frame 25 in contact with the partition 15. The other separator 15 adjacent to the second frame 55 is sandwiched between the second pillar portion 72 and the first inner rib 40 of the first frame 25 in contact with the separator 15.

Modification of the fifth embodiment

In the heat exchanger 10 of the present embodiment, the front support ribs 46a, 76a may be omitted in the central regions 26, 56 of the frames 25, 55.

In each of the frames 25, 55 of the present modification, the pillar portion is formed integrally with each of the support ribs 46a, 76a of the central regions 26, 56. The column portions of the frames 25, 55 are small rectangular plate-like members similar to the column portions 42, 72 provided in the end regions 27a, 27b, 57a, 57 b.

In the first frame 25, a pillar portion provided in the central region 26 protrudes from the surface of the first support rib 46 b. The projecting end of the pillar portion contacts the partition plate 15 on the surface side of the first frame 25. In the second frame 55, a pillar portion provided in the central region 56 protrudes from the surface of the second support rib 76 b. The projecting end of the pillar portion contacts the partition plate 15 on the surface side of the second frame 55.

(sixth embodiment)

Next, a sixth embodiment will be explained. The heat exchanger 10 of the present embodiment is obtained by modifying the structure of the heat exchanger 10 of the first embodiment. Here, the differences between the heat exchanger 10 of the present embodiment and the heat exchanger 10 of the first embodiment will be described.

In the following description, the upper surfaces of the first frame 25 and the second frame 55 in fig. 36, 37, and 38 are "front surfaces", and the lower surfaces of the first frame 25 and the second frame 55 in fig. 36, 37, and 38 are "back surfaces".

In the frame portion 30 of the first frame 25 of the present embodiment, the outer rib 33 is an outer portion extending along the peripheral edge of the frame portion 30. In the frame portion 30, a portion of the closing portion 31 located inward of the outer rib 33 is an inner portion 136 extending along the outer rib 33.

In the frame portion 60 of the second frame 55 of the present embodiment, the outer rib 63 is an outer portion extending along the peripheral edge of the frame portion 60. In the frame portion 60, a portion of the closing portion 61 located inward of the outer rib 63 is an inner portion 166 extending along the outer rib 63.

-outside clearance-

As shown in fig. 36, the height H1a of the portion of the outer rib 33 of the first frame 25 facing the first communication opening 22 is smaller than the depth D2 of the concave strip portion 65 of the second frame 55 (H1a < D2). As shown in fig. 37, the height H1b of the portion of the convex strip 34, which is a part of the outer rib 33 of the first frame 25 and faces the second communication opening 52, is smaller than the sum L2+ t of the thickness L2 of the auxiliary rib 62 of the second frame 55 and the thickness t of the partition 15 (H1b < L2+ t). As shown in fig. 39, the height H1c of the part of the outer rib 33 of the first frame 25, that is, the part of the raised strip 34 located at the main heat exchange portion 11 is smaller than the depth D2 of the recessed strip portion 65 of the second frame 55 (H1c < D2).

Therefore, in the heat exchanger 10, an outer gap 81 is formed between the surface of the outer rib 33 of the first frame 25 and the second element 50 located on the surface side. The width W of the outer gap 81 (D2-H1 a-L2 + t-H1 b-D2-H1 c) is approximately 0.1mm to 0.2 mm.

As shown in fig. 37, the height H2a of the portion of the outer rib 63 of the second frame 55 facing the second communication opening 52 is smaller than the depth D1 of the concave stripe portion 65 of the first frame 25 (H2a < D1). Further, as shown in fig. 36, the height H2b of a portion of the outer rib 63 of the second frame 55, that is, a portion of the ridge portion 64 facing the first connection-purpose opening 22 is smaller than the sum L1+ t of the thickness L1 of the auxiliary rib 32 of the first frame 25 and the thickness t of the partition 15 (H2b < L1+ t). As shown in fig. 39, the height H2c of the part of the outer rib 63 of the second frame 55, that is, the part of the raised strip 64 located at the main heat exchange portion 11 is smaller than the depth D1 of the recessed strip 65 of the first frame 25 (H2c < D1).

Therefore, in the heat exchanger 10, an outer gap 81 is formed between the surface of the outer rib 63 of the second frame 55 and the first element 20 located on the surface side. The width W of the outer gap 81 (D1-H2 a-L1 + t-H2 b-D1-H2 c) is approximately 0.1mm to 0.2 mm.

Adhesive layer, cover layer

As shown in fig. 36, 37, and 38, the heat exchanger 10 of the present embodiment is provided with an adhesive layer 85 and a cover layer 86. The adhesive layer 85 is buried in the outer gap 81 formed in the heat exchanger 10. The cover layer 86 covers the outer surface of the heat exchanger 10.

As described later, the adhesive layer 85 and the cover layer 86 are formed by curing an adhesive applied to the outer surfaces of the first member 20 and the second member 50 laminated together. The adhesive layer 85 and the cover layer 86 are integrated films formed of the same material.

As shown in fig. 36, in the portions of the sub heat exchange portions 12a and 12b of the heat exchanger 10 where the first connection-purpose openings 22 are formed, the surface of the outer rib 33 of the first frame 25 is bonded to the second member 50 located on the front surface side of the first frame 25 by an adhesive layer 85 buried in the outer gap 81 facing thereto. In this portion, the protruding end face of the ridge portion 64 of the second frame 55 is bonded to the first inner rib 40 of the first frame 25 positioned on the front surface side of the second frame 55 via the adhesive layer 85 embedded in the outer gap 81 facing thereto.

As shown in fig. 37, in the portions of the sub heat exchange portions 12a and 12b of the heat exchanger 10 where the second communication openings 52 are formed, the protruding end surfaces of the raised strip portions 34 of the first frame 25 are bonded to the second inner ribs 70 of the second frame 55 located on the front surface side of the first frame 25 via the adhesive layer 85 embedded in the outer gaps 81 facing thereto. In this portion, the surface of the outer rib 63 of the second frame 55 is bonded to the first element 20 located on the front surface side of the second frame 55 by an adhesive layer 85 embedded in the outer gap 81 facing thereto.

As shown in fig. 38, in the main heat exchange portion 11 of the heat exchanger 10, the protruding end faces of the raised strips 34 of the first frame 25 are bonded to the second member 50 located on the front surface side of the first frame 25 by an adhesive layer 85 embedded in the outer side gaps 81 facing the raised strips. In this portion, the protruding end face of the ridge portion 64 of the second frame 55 is bonded to the first element 20 located on the front surface side of the second frame 55 via an adhesive layer 85 embedded in the outer gap 81 facing thereto.

Process for Forming adhesive layer and cover layer

Next, the steps of forming the adhesive layer and the cover layer will be described.

In the manufacturing process of the heat exchanger 10, first, the following steps are performed: the first member 20 is formed by attaching the spacer 15 to the first frame 25, and the second member 50 is formed by attaching the spacer 15 to the second frame 55. Then, a lamination process of alternately laminating the first element 20 and the second element 50 is performed.

As shown in fig. 39, when the stacking process is completed, an outer gap 81 is formed between the adjacent first element 20 and second element 50. As described above, the outer gap 81 is a narrow gap facing the surface of the outer ribs 33, 63 of the frames 25, 55. Further, the outer gap 81 is opened on the outer surface of the heat exchanger 10.

After the laminating step is completed, a coating step is performed. In the coating step, an adhesive is applied to the outer surface of the heat exchanger 10 (in other words, an assembly in which the plurality of first elements 20 and the plurality of second elements 50 are stacked). The adhesive contains a resin cured by ultraviolet irradiation as a main component. Furthermore, the viscosity of the adhesive is relatively low. The viscosity of the adhesive is, for example, about 10 to 2000 mPas. Therefore, the adhesive applied to the outer surface of the heat exchanger (10) enters the outer gap (81) due to a capillary phenomenon.

After the coating step is completed, a curing step is performed. In the curing step, the adhesive applied to the heat exchanger 10 is irradiated with ultraviolet rays. The adhesive attached to the outer surface of the heat exchanger 10 is cured by ultraviolet irradiation, and becomes a coating layer 86 that covers the outer surface of the heat exchanger 10. The adhesive agent entering the outer gap is cured by ultraviolet irradiation to become the adhesive layer 85.

The binder used in the coating step contains an antibacterial component and a mildewproofing component. Therefore, the adhesive layer 85 and the cover layer 86 formed by the curing step contain an antibacterial component and a mildewproof component.

Retaining structure for the partition

As in the first embodiment, the first element 20 has the spacer 15 bonded to the back surface of the first frame 25, and the second element 50 has the spacer 15 bonded to the back surface of the second frame 55.

As in the first embodiment described above, in the heat exchanger 10, the plurality of first elements 20 and the plurality of second elements 50 are alternately stacked. The partition 15 of each element 20, 50 is sandwiched by the adjacent first frame 25 and second frame 55.

Holding structure (1) of sub heat exchanging section

As shown in fig. 36, in the portions of the sub heat exchange portions 12a and 12b of the heat exchanger 10 where the first communication opening 22 is formed, the partition plate 15 bonded to the back surface of the first frame 25 is sandwiched between the auxiliary rib 32 of the first frame 25 and the inner portion 166 of the closing portion 61 of the second frame 55. Therefore, the separator 15 bonded to the back surface of the first frame 25 is closely attached to the surface of the inner portion 166 of the closing portion 61 of the second frame 55 on the back surface side thereof.

In the portions of the sub heat exchange portions 12a and 12b of the heat exchanger 10 where the first communication opening 22 is formed, the partition plate 15 bonded to the back surface of the second frame 55 is sandwiched between the inner portion 166 of the closed portion 61 of the second frame 55 and the first inner rib 40 of the first frame 25. Therefore, the separator 15 bonded to the rear surface of the second frame 55 is closely attached to the surface of the first inner rib 40 of the first frame 25 on the rear surface side thereof.

As described above, the outer gap 81 is formed between the adjacent first and second members 20 and 50. In the heat exchanger 10, the adhesive layer 85 is formed to be embedded in the outer gap 81. As shown in fig. 36, the portions of the separator 15 bonded to the back surface of the second frame 55 covering the concave portions 65 are bonded to the outer ribs 33 of the first frame 25 by an adhesive layer 85. The ridge portion 64, which is a part of the outer rib 63 of the second frame 55, is bonded to the first inner rib 40 of the first frame 25 by the adhesive layer 85.

Holding structure (2) of sub heat exchanging section

As shown in fig. 37, in the portions of the sub heat exchange portions 12a and 12b of the heat exchanger 10 where the second communication openings 52 are formed, the partition plate 15 bonded to the back surface of the first frame 25 is sandwiched between the inner portion 136 of the closed portion 61 of the first frame 25 and the second inner rib 70 of the second frame 55. Therefore, the separator 15 bonded to the back surface of the first frame 25 is closely attached to the surface of the second inner rib 70 of the second frame 55 on the back surface side thereof.

In the portions of the sub heat exchange units 12a and 12b of the heat exchanger 10 where the second communication openings 52 are formed, the partition plate 15 bonded to the back surface of the second frame 55 is sandwiched between the auxiliary ribs 62 of the second frame 55 and the inner portion 136 of the closing portion 31 of the first frame 25. Therefore, the separator 15 bonded to the rear surface of the second frame 55 is closely attached to the surface of the inner portion 136 of the closing portion 31 of the first frame 25 on the rear surface side thereof.

As described above, the outer gap 81 is formed between the adjacent first and second members 20 and 50. In the heat exchanger 10, the adhesive layer 85 is formed to be embedded in the outer gap 81. As shown in fig. 37, the portions of the separator 15 bonded to the back surface of the first frame 25 covering the concave portions 35 are bonded to the outer ribs 63 of the second frame 55 by an adhesive layer 85. The ridge portion 34, which is a part of the outer rib 33 of the first frame 25, is bonded to the second inner rib 70 of the second frame 55 by the adhesive layer 85.

Main heat exchange portion holding structure

As shown in fig. 38, each partition 15 is sandwiched between the inner portion 136 of the closing portion 31 of the first frame and the inner portion 166 of the closing portion 61 of the second frame 55. Specifically, the separator 15 bonded to the back surface of the first frame 25 is in close contact with the surface of the inner portion 166 of the closing portion 61 of the second frame 55 located on the back surface side thereof. The separator 15 bonded to the back surface of the second frame 55 is in close contact with the surface of the inner portion 136 of the closing portion 31 of the first frame 25 on the back surface side thereof.

As described above, the outer gap 81 is formed between the adjacent first and second members 20 and 50.

Specifically, an outer gap 81 is formed between the protruding end surface of the ridge portion 34 of the first frame 25 and the partition plate 15 of the second element 50 positioned on the front surface side of the first frame 25. Therefore, the portion of the partition 15 of the second member 50 covering the wall surface of the recessed portion 65 of the second member 50 does not contact the raised strip portion 34 of the first frame 25. On the other hand, an adhesive layer 85 is formed in the outer gap 81. In addition, the portions of the partition 15 of the second element 50 covering the wall surfaces of the concave portions 65 are bonded to the convex portions 34 of the first frame 25 by the adhesive layer 85.

Further, an outer gap 81 is formed between the projecting end surface of the ridge portion 64 of the second frame 55 and the partition plate 15 of the first element 20 positioned on the front surface side of the second frame 55. Therefore, the portions of the partition plate 15 of the first element 20 covering the wall surfaces of the concave portions 35 of the first element 20 do not contact the convex portions 64 of the second frame 55. On the other hand, an adhesive layer 85 is formed in the outer gap 81. In addition, the portions of the partition plate 15 of the first element 20 covering the wall surfaces of the concave portions 35 are bonded to the convex portions 64 of the second frame 55 by the adhesive layer 85.

Feature (1) of the sixth embodiment

The heat exchanger 10 of the present embodiment includes a plurality of separators 15 in a flat sheet shape, and frames 25, 55 alternately stacked with the separators 15 and maintaining the pitch between adjacent separators 15. In the heat exchanger 10, the first flow path 21 and the second flow path 51 are alternately formed with the separator 15 interposed therebetween.

The frames 25, 55 have frame portions 30, 60 extending along the peripheral edge of the partition 15. The frame portions 30, 60 have outer ribs 33, 63 extending along the peripheral edges of the frame portions 30, 60, and inner portions 136, 166 located inside the outer ribs 33, 63 and extending along the outer ribs 33, 63. The inner side portions 136, 166 of the frame portions 30, 60 sandwich and hold the partition plate 15 between the inner side portions 136, 166 and the frames 25, 55 located adjacent to the inner side portions 136, 166. An outer gap 81 is formed between the outer ribs 33, 63 of the frame portions 30, 60 and the frames 25, 55 located adjacent to the outer ribs 33, 63.

In the heat exchanger 10 of the present embodiment, the outer ribs 33, 63 and the inner portions 136, 166 are provided in the frame portions 30, 60 extending along the peripheral edge of the separator 15. In the heat exchanger 10, an outer gap 81 is formed between the outer ribs 33, 63 of the respective separators 15 and the frames 25, 55 located adjacent to the outer ribs 33, 63. In the heat exchanger 10, the inner portions 136 and 166 of the respective separators 15 sandwich and hold the separators 15 between the inner portions 136 and 166 and the frames 25 and 55 located adjacent to the inner portions 136 and 166. As a result, the frame portions 30 and 60 of the frames 25 and 55 and the separator 15 are sealed, and the airtightness of the heat exchanger 10 is improved.

As described above, the frames 25, 55 are resin members formed by injection molding. In the case of molding a flat member by injection molding, the closer the part is to the outer edge of the member, the lower the dimensional accuracy tends to be. Therefore, in frames 25 and 55 of the present embodiment, the dimensional accuracy of frame portions 30 and 60 may be low.

If the dimensional accuracy of the frame portions 30, 60 is low, it is difficult to bring the entire frame portions 30, 60 into close contact with the elements 20, 50 located at adjacent positions, and a gap may be formed between the adjacent elements 20, 50, resulting in a decrease in the airtightness of the heat exchanger 10. When a gap is formed between the adjacent elements 20 and 50, air may leak from the first flow path 21 or the second flow path 51 through the gap, or air may flow into the first flow path 21 or the second flow path 51 through the gap.

In contrast, in the frames 25 and 55 of the present embodiment, the height of the outer ribs 33 and 63 located near the outer peripheries of the frame portions 30 and 60 is set to a value that ensures that the outer gaps 81 are formed between the outer ribs 33 and 63 and the elements 20 and 50 located adjacent to the outer ribs 33 and 63, with relatively low dimensional accuracy. In the frames 25 and 55 of the present embodiment, the height of the inner side portions 136 and 166 located near the inner peripheries of the frame portions 30 and 60 with relatively low dimensional accuracy is set to a value that ensures that the inner side portions 136 and 166 are in close contact with the elements 20 and 50 located at adjacent positions.

Therefore, in the heat exchanger 10 of the present embodiment, the sealing property between the adjacent elements 20 and 50 can be improved, and the airtightness of the heat exchanger 10 can be improved. As a result, the amount of air that leaks from the air flow passages 21, 51 or enters the air flow passages 21, 51 through paths other than the regular path can be suppressed.

Feature (2) of the sixth embodiment

The heat exchanger 10 of the present embodiment includes an adhesive layer 85. The adhesive layer 85 is provided to be embedded in the outer gap 81, and bonds the outer ribs 33, 63 of the frame portions 30, 60 to the frames 25, 55 located adjacent to the outer ribs 33, 63.

In the heat exchanger 10 of the present embodiment, the adjacent frames 25 and 55 are bonded to each other by the adhesive layer 85 provided to be embedded in the outer gap 81. Further, since the outer gap 81 is buried by the adhesive layer 85, the airtightness of the heat exchanger 10 is improved. As a result, the amount of air leaking from the air flow passages 21, 51 or entering the air flow passages 21, 51 through paths other than the regular path can be suppressed.

Feature (3) of the sixth embodiment

The heat exchanger 10 of the present embodiment includes a cover layer 86. The cover layer 86 is formed of the same material as the adhesive layer 85, and then formed with the adhesive layer 85 to cover the outer surface of the heat exchanger 10.

The outer surface of the heat exchanger 10 of the present embodiment is covered with an adhesive layer 85. Therefore, the sealing property between the stacked elements 20 and 50 is improved, and the airtightness of the heat exchanger 10 is improved, so that the amount of air leaking from the air flow passages 21 and 51 or entering the air flow passages 21 and 51 through the paths other than the normal paths can be suppressed.

As described above, the heat exchanger 10 of the present embodiment can be provided in a ventilator. In the maintenance work of the ventilator, the work of detaching the heat exchanger 10 from the ventilator or attaching the heat exchanger 10 to the ventilator is performed. At this time, the outer surface of the heat exchanger 10 rubs against a guide rail or the like provided on the ventilator. Therefore, if the heat exchanger 10 is repeatedly attached to and detached from the ventilator, the outer surface of the heat exchanger 10 is worn, and the sealing performance between the elements 20 and 50 may be reduced.

In contrast, the outer surface of the heat exchanger 10 of the present embodiment is covered with the adhesive layer 85. Therefore, the outer surface of the heat exchanger 10 is protected by the adhesive layer 85, so that abrasion of the outer surface of the heat exchanger 10 can be suppressed. As a result, according to the present embodiment, the durability and reliability of the heat exchanger 10 can be improved. Further, the friction coefficient of the outer surface of the heat exchanger 10 can be reduced, and the work of attaching and detaching the heat exchanger 10 to and from the ventilator can be facilitated.

Feature (4) of the sixth embodiment

In the heat exchanger 10 of the present embodiment, the adhesive layer 85 is formed of an adhesive that is cured by ultraviolet irradiation.

In the heat exchanger 10 of the present embodiment, the adhesive layer 85 is formed by curing the adhesive agent entering the outer gap 81 by irradiation of ultraviolet rays. Therefore, it is easy to appropriately control the speed of curing the adhesive, so that the adhesive layer 85 can be reliably formed.

Feature (5) of the sixth embodiment

In the heat exchanger 10 of the present embodiment, the adhesive layer 85 contains an antibacterial component and a mildewproof component.

In the heat exchanger 10 of the present embodiment, the propagation of bacteria and mold in the heat exchanger 10 can be suppressed, and the cleanliness of the heat exchanger 10 can be maintained.

(seventh embodiment)

Next, a seventh embodiment will be explained. The heat exchanger 10 of the present embodiment is obtained by modifying the first frame 25 and the second frame 55 in addition to the heat exchanger 10 of the sixth embodiment. Here, the differences between the heat exchanger 10 of the present embodiment and the heat exchanger 10 of the sixth embodiment will be described.

Positioning protrusion, positioning hole-

As shown in fig. 40, in the first frame 25 and the second frame 55, positioning projections 137, 167 and positioning holes 138, 168 are formed, respectively. In each of the frames 25, 55, a plurality of positioning projections 137, 167 and a plurality of positioning holes 138, 168 are formed in the closing parts 31, 61 that constitute the main heat exchange part 11. Further, the positioning projections 137, 167 and the positioning holes 138, 168 are formed in the portions of the closing portions 31, 61 that constitute the inner side portions 136, 166.

The positioning projections 137, 167 are cylindrical projections projecting from the back surfaces of the closing portions 31, 61. The positioning holes 138, 168 are cylindrical recesses that open on the surface of the closing portions 31, 61. The inner diameter of the positioning hole 138, 168 is slightly larger than the outer shape of the positioning protrusion 137, 167, and the depth of the positioning hole 138, 168 is longer than the length of the positioning protrusion 137, 167.

The plurality of positioning projections 137, 167 and the plurality of positioning holes 138, 168 formed in the closing portions 31, 61 of the respective frames 25, 55 are paired in one-to-one correspondence. The paired positioning protrusions 137, 167 and positioning holes 138, 168 are arranged in line in the up-down direction in fig. 40 in such a manner that the central axes thereof substantially coincide with each other. In a state where the first member 20 and the second member 50 have been laminated, the positioning projections 137 of the first frame 25 are fitted into the positioning holes 168 of the second frame 55, and the positioning projections 167 of the second frame 55 are fitted into the positioning holes 138 of the first frame 25, whereby the relative positions of the first member 20 and the second member 50 are determined.

Recesses for introduction, adhesive layers

The closing portions 31, 61 of the frames 25, 55 have drawing recesses 82 formed in the surfaces of the portions constituting the inner portions 136, 166. The drawing depression 82 is a shallow and flat depression having a depth of approximately 0.1mm to 0.2 mm. The introduction recess 82 is formed in a region from the raised strip 34, 64 to the positioning hole 138, 168.

As described above, in the coating process in the manufacturing process of the heat exchanger 10, the adhesive is coated on the outer surfaces of the first member 20 and the second member 50 which are laminated. The adhesive applied to the heat exchanger 10 enters the outer gap 81 due to the capillary phenomenon and further enters the introduction recess 82 due to the capillary phenomenon. As a result, the outer gap 81 and the introduction recess 82 are substantially filled with the adhesive.

In the curing step after the coating step, after the heat exchanger 10 is irradiated with ultraviolet rays, the adhesive filling the outer gap 81 and the introduction recess 82 is cured to become the adhesive layer 85. Therefore, the adjacent first member 20 and second member 50 are bonded by the adhesive layer 85, and the adhesive layer 85 is formed in such a manner as to fill the outer gap 81 and the introduction recess 82. Further, since the portions near the root portions of the positioning protrusions 137, 167 are surrounded by the adhesive layer 85, the adjacent first element 20 and second element 50 are reliably sealed by the adhesive layer 85.

Features of the seventh embodiment

In the heat exchanger 10 of the present embodiment, the positioning projections 137, 167 and the positioning holes 138, 168 are formed in the frame portions 30, 60 of the frames 25, 55. The positioning projections 137, 167 project from a surface of the separator 15 in one direction of the stacking direction. The positioning holes 138, 168 open on the other surface of the spacer 15 in the stacking direction. Further, the positioning projections 137, 167 of the frames 25, 55 located at positions adjacent to the frame portions 30, 60 where the positioning holes 138, 168 are formed are fitted into the positioning holes 138, 168.

In the heat exchanger 10 of the present embodiment, the positioning projections 137 and 167 and the surfaces on which the positioning projections 137 and 167 are formed are bonded to the frames 25 and 55 on which the positioning holes 138 and 168 into which the positioning projections 137 and 167 are fitted are formed, respectively, in the frame portions 30 and 60 of the frames 25 and 55, respectively, by the adhesive layer 85.

In the heat exchanger 10 of the present embodiment, the positioning projections 137, 167 of the frames 25, 55 enter the positioning holes 138, 168 of the frames 25, 55 located adjacent to the frames 25, 55. In this way, the relative position between adjacent frames 25, 55 is determined. The positioning projections 137, 167 of each frame 25, 55 are bonded to the frame 25, 55 located adjacent to the frame 25, 55 by the adhesive layer 85.

(other embodiments)

The following modifications can be applied to the heat exchanger 10 of each embodiment described above. The following modifications may be combined or substituted as appropriate without affecting the function of the heat exchanger 10.

In the heat exchanger 10 of each of the above embodiments, the separator 15 may not be bonded to the frames 25 and 55. In this case, the partition 15 is sandwiched and held by the first frame 25 and the second frame 55 located on both sides of the partition 15.

The heat exchanger 10 of each of the above embodiments may be a sensible heat exchanger that exchanges only sensible heat between the intake air and the exhaust air. In this case, the separator 15 of the heat exchanger 10 is formed of a material (for example, a resin film or a thin plate-like metal) having low moisture permeability or no moisture permeability at all.

The shape of the heat exchanger 10 of each of the above embodiments is not limited to the octagonal column shape. The heat exchanger 10 may have a hexagonal prism shape or a quadrangular prism shape, for example. When the heat exchanger 10 has a hexagonal prism shape, the respective sub heat exchange portions 12a and 12b have a triangular shape in a plan view of the heat exchanger 10 (a view corresponding to fig. 2).

In the heat exchanger 10 of the sixth or seventh embodiment, the adhesive used to form the adhesive layer 85 and the cover layer 86 may be an aqueous emulsion adhesive. For example, when the hardness of the cover layer 86 is not necessarily high, the adhesive layer 85 and the cover layer 86 may be formed with an aqueous emulsion type adhesive.

While the embodiments and the modifications have been described above, it is to be understood that various changes in form and details may be made therein without departing from the spirit and scope of the appended claims. The above embodiments and modifications may be appropriately combined and replaced as long as the functions of the objects of the present disclosure are not affected.

Industrial applicability-

In view of the foregoing, the present disclosure is useful for heat exchangers.

-description of symbols-

10 heat exchanger

15 baffle (separating parts)

21 first flow path

22 first communication opening (communication opening)

25 first frame (spacing maintaining parts)

30 frame part

32 auxiliary rib

33 outside rib (outside part)

34 convex strip part

35 concave strip part

36 linear convex part

37 linear recess

40 first inner side rib

41a, 41b first retaining rib

42 first strut part

45 first flow path inner rib

46a, 46b first support ribs

51 second flow path

52 second communication opening (communication opening)

55 second frame (spacing maintaining parts)

60 frame part

62 auxiliary rib

63 outside rib (outside part)

64 convex strip part

65 concave strip part

66 linear protrusions

67 linear recess

70 second inner side rib

71a, 71b second retaining rib

72 second pillar part

75 second flow path inner rib

76a, 76b second support rib

81 outside gap

85 bonding layer

86 coating

136 inner side part

137 positioning projection

138 positioning hole

166 inner side part

167 positioning projection

168 locating the holes.