阅读说明：本技术 热交换装置 (Heat exchange device ) 是由 不公告发明人 于 2020-04-30 设计创作，主要内容包括：本发明公开了一种热交换装置,包括阀芯部件、芯体部件、连接件,连接件具有第一端部、第二端部,连接件的第一端部位于所述第一孔道,所述连接件的第二端部具有焊接段和相邻段,所述芯体部件具有焊接配合部,所述连接件的焊接段与所述焊接配合部焊接,所述相邻段与所述焊接段相邻,所述焊接段的外径小于或等于所述焊接配合部的内径,所述相邻段的外径小于或等于所述焊接配合部的内径；所述焊接配合部远离所述阀芯部件的一端与所述焊接段远离所述阀芯部件的一端之间的距离大于等于零。该热交换装置密封性较好。(The invention discloses a heat exchange device, which comprises a valve core component, a core body component and a connecting piece, wherein the connecting piece is provided with a first end part and a second end part, the first end part of the connecting piece is positioned in a first pore passage, the second end part of the connecting piece is provided with a welding section and an adjacent section, the core body component is provided with a welding matching part, the welding section of the connecting piece is welded with the welding matching part, the adjacent section is adjacent to the welding section, the outer diameter of the welding section is less than or equal to the inner diameter of the welding matching part, and the outer diameter of the adjacent section is less than or equal to the inner diameter of the welding matching part; the distance between one end of the welding matching part, which is far away from the valve core part, and one end of the welding section, which is far away from the valve core part, is larger than or equal to zero. The heat exchange device has good sealing performance.)

1. A heat exchange device comprises a valve core component and a core component, wherein the valve core component and the core component are fixedly arranged; the method is characterized in that:

the core component is provided with a plate part which is provided with a plurality of plates, the plate part is at least provided with a first pore passage, a second pore passage and an interplate channel, and the first pore passage, the interplate channel and the second pore passage are communicated;

the heat exchange device comprises a connecting piece, the connecting piece is provided with a first end part and a second end part, the first end part of the connecting piece is positioned in the first pore channel, the second end part of the connecting piece is provided with a welding section and an adjacent section, the core body part is provided with a welding matching part, the welding section of the connecting piece is welded with the welding matching part, the adjacent section is adjacent to the welding section, the outer diameter of the welding section is smaller than or equal to the inner diameter of the welding matching part, and the outer diameter of the adjacent section is smaller than or equal to the inner diameter of the welding matching part; the distance between one end of the welding matching part, which is far away from the valve core part, and one end of the welding section, which is far away from the valve core part, is more than or equal to zero;

the valve body member has a valve seat portion having a bottom opening, an orifice capable of communicating the peripheral opening and the bottom opening, and a peripheral opening communicating with the first port; the connecting piece is provided with a connecting channel, and the bottom opening is communicated with the connecting channel of the connecting piece.

2. The heat exchange device of claim 1, wherein:

the thickness of the welding matching part is larger than the thickness of the superposition of at least two sheets along the extending direction of the first pore channel;

the core component has a bottom pressing block, the bottom pressing block has the welding matching part, the welding section of the connecting piece is located on the bottom pressing block, the first end part is welded and fixed with the core component, and the welding section is welded and fixed with the bottom pressing block.

3. The heat exchange device of claim 2, wherein: the bottom pressing block is provided with a protrusion, the protrusion extends into the first hole, the protrusion is provided with a communication hole communicated with the first hole, the welding matching part is arranged on the inner wall of the protrusion, the second end part extends into the communication hole of the protrusion, and the outer wall of the protrusion is fixed to the plate piece part in a welding mode.

4. The heat exchange device of claim 2, wherein: the bottom pressing block is provided with a communicating hole communicated with the first pore channel, the welding matching part is arranged on the inner wall of the communicating hole formed in the bottom pressing block, the second end part extends into the communicating hole, and the thickness of the welding matching part is larger than that of the 5 plates.

5. The heat exchange device of any one of claims 1 to 4, wherein:

the connector has a flange portion projecting in a radial direction of the connector;

the plate part is provided with a first plate and a second plate, the first plate and the second plate are welded and fixed, and the top or the bottom of the flange part is welded and fixed with the first plate; or the top or the bottom of the flange part is welded and fixed with the second plate;

and/or the core body component is provided with a top pressing block, and the flange part is welded and fixed with the top pressing block.

6. The heat exchange device of claim 1, wherein:

the core component has a first side portion and a second side portion, at least part of the valve core component is located at the first side portion, the heat exchange device has a communication channel, the communication channel is located at the second side portion, the communication channel is communicated with the connecting channel, and the connecting channel is not directly communicated with the first pore channel;

at least a portion of the valve seat portion extends into the first end portion, and an outer diameter of the adjacent segment is greater than or equal to an outer diameter of the welded segment.

7. The heat exchange device of any one of claims 1 to 6, wherein:

the connecting piece is provided with a valve seat matching part and a drainage tube, the valve seat matching part and the valve seat part are arranged in a sealing way,

the valve seat matching part is provided with a bottom end part, the drainage tube is welded and fixed with the bottom end part, and part of the drainage tube extends into the valve seat matching part;

the drainage tube is provided with an outward-expanding part, the outward-expanding part does not extend into the valve seat matching part, and the outward-expanding part is matched and limited with the bottom end part of the valve seat matching part.

8. The heat exchange device of claim 7, wherein:

the valve seat portion has a base section with a bottom opening and a middle section with a peripheral opening, the valve seat mating portion has an annular wall portion, and the base section is sealingly disposed with the annular wall portion;

the valve seat fitting portion is provided with a side hole corresponding to the peripheral opening, the side hole being closer to the first side of the core member than to the annular wall portion in the sheet stacking direction of the core member.

9. The heat exchange device of claim 1, wherein:

the connecting piece is in the form of a drainage tube;

the plate portion is provided with a third plate and a fourth plate, the third plate and the fourth plate are welded and fixed, the third plate is provided with a first annular convex portion, the fourth plate is provided with a second annular convex portion, at least part of the valve seat portion extends into the first annular convex portion, the valve seat portion is provided with a base section, the base section is provided with the bottom opening, and the base section and the first annular convex portion are arranged in a sealing mode;

the first end of the connecting piece extends into the second annular convex part, and the second annular convex part is welded and fixed with the connecting piece.

10. The heat exchange device of claim 9, wherein:

the valve seat portion has a base section having the bottom opening and a middle section having the peripheral opening, the side of the core member where the valve core member is disposed being an upper side, the middle section being located above the connecting member;

at least part of the first end of the connecting piece is welded and fixed with the second annular convex part, and the second end of the connecting piece is welded and fixed with the core component;

the first end portion is provided with a first section and a second section, the first section of the first end portion extends into the second annular convex portion, the second section does not extend into the second annular convex portion, the outer diameter of the second section is larger than that of the first section, and the outer diameter of the second section is larger than that of the second annular convex portion.

Technical Field

The invention relates to the field of thermal management, in particular to a heat exchange device.

Background

A thermal management system may include a circuit with a refrigerant in which two components, a heat exchanger and an expansion valve, are required, which are typically connected by piping in the thermal management system.

Parts of the heat exchanger are fixed by welding, and the height of the heat exchanger after welding can be shrunk due to melting of welding materials and the like in the welding process, so that a valve body of the expansion valve can be fixed with a mounting plate of the heat exchanger in the integration of the heat exchanger and the expansion valve.

Disclosure of Invention

The invention aims to provide a heat exchange device with good sealing performance.

In order to realize the purpose, the following technical scheme is adopted:

a heat exchange device comprises a valve core component and a core component, wherein the valve core component and the core component are fixedly arranged;

the core component is provided with a plate part which is provided with a plurality of plates, the plate part is at least provided with a first pore passage, a second pore passage and an interplate channel, and the first pore passage, the interplate channel and the second pore passage are communicated;

the heat exchange device comprises a connecting piece, the connecting piece is provided with a first end part and a second end part, the first end part of the connecting piece is positioned in the first pore channel, the second end part of the connecting piece is provided with a welding section and an adjacent section, the core body part is provided with a welding matching part, the welding section of the connecting piece is welded with the welding matching part, the adjacent section is adjacent to the welding section, the outer diameter of the welding section is smaller than or equal to the inner diameter of the welding matching part, and the outer diameter of the adjacent section is smaller than or equal to the inner diameter of the welding matching part; the distance between one end of the welding matching part, which is far away from the valve core part, and one end of the welding section, which is far away from the valve core part, is more than or equal to zero;

the valve body member has a valve seat portion having a bottom opening, an orifice capable of communicating the peripheral opening and the bottom opening, and a peripheral opening communicating with the first port; the connecting piece is provided with a connecting channel, and the bottom opening is communicated with the connecting channel of the connecting piece.

The technical scheme of the invention comprises a connecting piece, wherein a welding section of the connecting piece is welded with the welding matching part, the adjacent section is adjacent to the welding section, the outer diameter of the welding section is less than or equal to the inner diameter of the welding matching part, and the outer diameter of the adjacent section is less than or equal to the inner diameter of the welding matching part; in this way, when the core body component shrinks in the welding process, because the connecting piece is provided with the welding section and the adjacent section, the distance between one end of the welding matching part far away from the valve core component and one end of the welding section far away from the valve core component is more than or equal to zero; the welding matching part can move relatively to the connecting piece in the welding shrinkage process of the core body component, and the welding tightness of the connecting piece and the core body component is good.

Drawings

FIG. 1 is a schematic diagram of one embodiment of a heat exchange device;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is an exploded perspective view of FIG. 1;

FIG. 4 is a schematic cross-sectional view of a second embodiment of a heat exchange device;

FIG. 5 is an exploded perspective view of the heat exchange device illustrated in FIG. 4;

FIG. 6 is a schematic cross-sectional view of another embodiment of a heat exchange device;

FIG. 7 is a schematic cross-sectional view of yet another embodiment of a heat exchange device.

Detailed Description

Referring to fig. 1 to 3, fig. 1 illustrates a perspective view of a first heat exchange device 1 according to the present invention.

The heat exchange device 1 at least comprises a first flow passage 101 and a second flow passage, and fluid in the first flow passage 101 can exchange heat with fluid in the second flow passage; the fluid in the first flow passage 101 may be a refrigerant and the fluid in the second flow passage may be a cooling fluid. The heat exchange device 1 may also have a third flow channel, a fourth flow channel, etc.

The heat exchange device 1 includes a valve core component 11, a core component 12, and a connector 13, wherein the valve core component 11 and the core component 12 are assembled and fixed, and the connector 13 and the core component 12 are fixedly disposed, for example, welded. The spool member 11 may be, for example, a spool structure of an expansion valve.

The core member 12 includes a top press piece 122, a plate portion 121, and a bottom press piece 123, and the top press piece 122, the plate portion 121, and the bottom press piece 123 are welded and fixed. The plate portion 121 has at least a first port 1211, a second port 1213, and a plate-to-plate passage 1212, the first port 1211, the plate-to-plate passage 1212, and the second port 1213 are connected, and the first flow channel 101 includes a portion of the first port 1211, the second port 1213, and the plate-to-plate passage 1212.

Herein, the first orifice 1211, the second orifice 1213 are orifices when the core member 12 is not assembled with the valve core member 11. After the first and second passages 1211, 1213 are fitted with the spool member or the connector, even if there is a member or a part located in another member, it is intended herein that the member or the part is located in the first or second passage as long as the member is located in the first or second passage of the core member.

The plate portion 121 has a plurality of plates stacked and fixed by welding, each adjacent plate has at least a first hole and a second hole, and the first holes of the plates are aligned and the second holes of the plates are aligned along the stacking direction of the plates. The first and second holes are located adjacent to the edges of the plate, so that the fluid flowing through the plate can have a longer flow path, which helps to improve the heat exchange efficiency. The first apertures of each plate are aligned to form a portion of the first aperture 1211 and the second apertures of each plate are aligned to form a portion of the second aperture 1213.

The top press piece 122 has a third hole 1221, the third hole 1221 being aligned with the first hole, and the bottom press piece 123 has a communication hole 1231, the communication hole 1231 being aligned with the first hole.

The heat exchange device 1 comprises a communication channel 103 and another communication channel 104, the communication channel 103 is communicated with the connecting channel 138 of the connecting piece 13, and the another communication channel 104 can be communicated with the second hole channel 1213, so that fluid can enter from the communication channel 103, pass through the inner cavity of the connecting piece 13, enter the first hole channel after being throttled and regulated by the valve core part 11, and then enter the plate-to-plate channel 1212 of the core body part 12 to exchange heat with the fluid of the second flow channel, the flow path is simple, and the heat exchange efficiency is high. Of course, in other cases, the other communication passage 104 may not directly communicate with the second cell 1213, for example, a pipe may be provided in the second cell 1213 to communicate with the other communication passage 104. In other cases, the other communication channel 104 may not be in communication with the interplate channels 1212 through the second cell channels 1213, the other communication channel 104 may be disposed on the side of the core member 12 where the communication channel 103 is disposed, and the other communication channel 104 may be adjacent to the communication channel 103 and not in direct communication with the communication channel 103.

The core member 12 has a first side 124 and a second side 126, at least part of the core member 11 is located at the first side 124, and a communication passage 138 is located at the second side 126, the communication passage communicating with the connection passage. For example, the spool member 11 includes a coil portion 1120, and the coil portion 1120 is located at the first side portion 124.

At least a portion of the spool member 11 extends into the first passage 1211, and at least a portion of the connector 13 extends into the first passage 1211.

The valve body member 11 has a valve seat portion 111, at least a portion of the valve seat portion 111 is located in the first bore 1211, the valve seat portion 111 has a peripheral opening 1113, an orifice 1114, and a bottom opening 1115, the peripheral opening 1113 communicates with the first bore 1211 and with the inter-plate passage 1212, the connector 13 has a connection passage 138, one end of the connector 13 is located in the first bore 1211, the bottom opening 1115 communicates with the connection passage 138 of the connector 13, and the connection passage 138 does not directly communicate with the first bore 1211. The spool member 11 may be a spool portion of an electronic expansion valve. In this way, fluid from the connecting channel 138 of the connecting piece 13 can enter the interplate channels 1212 through the bottom opening 1115, the orifice 1114, the peripheral opening 1113 and the first bore 1211, so that the fluid can exchange heat with the fluid between the adjacent plates inside the plate portion 121. The peripheral openings 1113 may communicate directly with the first port 1211 or may communicate directly with the interplate passages 1212.

Herein, the fact that the connecting passage is not directly communicated with the first duct does not exclude the transition communication between the two through a flow passage provided by other components.

The connecting element 13 has an annular wall 131, and the valve seat 111 is sealed with the annular wall 131, for example, in a radial or axial manner.

The valve seat portion 111 has a base section 1111 and an intermediate section 1112, the base section 1111 having a bottom opening 1115, the base section 1111 being located inside the attachment element 13, the peripheral side of the base section 1111 being sealingly arranged with the annular wall portion 131 of the attachment element 13. The middle section 1112 has a peripheral opening 1113, the middle section 1112 being adjacent the first side 124 of the core components 12 relative to the base section 1111 in the stacking direction of the core components 12, the middle section 1112 being located at the plate portion 121, the peripheral opening 1113 being in communication with the interplate channel 1212. Thus, the depth of the valve core component 11 assembled to the core component 12 is deeper, which helps to reduce the height of the valve core component 11 protruding from the core component 12, and helps to make the overall structure smaller and more compact. When the valve element component is in an open state, the communication channel, the connecting channel, the bottom opening, the throttle hole, the peripheral opening, the first hole channel, the plate-to-plate channel and the second hole channel are communicated.

It should be noted that the base section and the middle section are defined by name difference and not by structure.

The connector 13 has a valve seat matching portion 132 and a draft tube 133, and the valve seat portion 111 and the draft tube 133 are fixedly arranged, for example, by welding, or by other fixing methods such as clinching. The valve seat fitting portion 132 is provided with an annular wall portion 131, and the height of the annular wall portion 131 is larger than the height of the seat section 1111 in the sheet stacking direction of the core member 12. The base section 1111 is provided with a first groove 1116, the heat exchange device 1 is provided with a first sealing member 14, the first sealing member 14 is located in the first groove 1116, the first sealing member 14 and the annular wall 131 are tightly matched against each other to realize sealing of the base section 1111 and the annular wall 131, and thus leakage between the base section 1111 and the annular wall 131 is effectively prevented.

The valve seat fitting portion 132 has a side hole 1321, and the side hole 1321 is closer to the first side portion 124 of the core member 12 with respect to the annular wall portion 131 in the sheet stacking direction of the core member 12. The side hole 1321 corresponds to the peripheral opening 1113 of the valve body member 11. Thus, fluid enters through the draft tube 133 from the bottom opening 1115 of the valve core member 11, through the orifice 1114, the peripheral opening 1113, the side holes 1321 into the first port 1211, and into the interplate channels 1212 communicating with the first port 1211 for exchanging heat with the fluid in the second flow channel.

The connecting piece 13 is welded and fixed with the core body component 12, the core body component 12 is provided with a welding matching part 125, the welding matching part 125 is welded and fixed with the connecting piece 13, and the thickness of the welding matching part 125 is larger than the thickness of the superposition of at least two plates along the extending direction of the first duct 1211; thus, in the welding shrinkage process of the core component 12, since the welding matching part 125 has a thickness larger than the thickness of two stacked sheets, the connecting piece 13 can be well welded with the welding matching part 125 in the welding process, which is beneficial to the stability of the sealing property.

Connector 13 has a first end 134 and a second end 135, the first end 134 is located at the first duct 1211, the second end 135 of connector 13 has a welded section 1352 and an adjacent section 1351, the welded section 1352 of connector 13 is welded with the welded fitting 125, the adjacent section 1351 is adjacent to the welded section 1352, and the adjacent section 1351 is close to the first end 134 relative to the welded section 1352, the outer diameter of the welded section 1352 is smaller than or equal to the inner diameter of the welded fitting 125, and the outer diameter of the adjacent section 1351 is smaller than or equal to the inner diameter of the welded fitting 125; when the core body component is in a contraction condition in the welding process, because the connecting piece is provided with the welding section and the adjacent section, the distance between one end of the welding matching part, which is far away from the valve core component, and one end of the welding section, which is far away from the valve core component, is more than or equal to zero; the welding matching part can move relatively to the connecting piece in the welding shrinkage process of the core body component, and the welding tightness of the connecting piece and the core body component is good. In addition, the outer diameter of the adjacent section 1351 may be greater than or equal to the outer diameter of the welded section 1352, and the welded section 1352 may be reduced in diameter relative to the adjacent section 1351, which is more beneficial to the relative movement of the plate portion with respect to the connecting member during the welding process.

The valve seat engagement portion 132 has a flange portion 1322, and the flange portion 1322 is welded and fixed to the core member 12. The core member 12 includes a first plate 1214a and a second plate 1215a, the first plate 1214a is fixed to the second plate 1215a by welding, and the top or bottom of the flange 1322 is fixed to the first plate 1214a by welding; or the top or bottom of the flange portion 1322 is welded to the second plate 1215 a.

The core member 12 has a top pressing piece 122, the flange portion 1322 is welded and fixed to the top pressing piece 122, and the seat portion 111 of the valve body member 11 is inserted from the third hole 1221 of the top pressing piece 122. The valve seat matching part 132 and the plate part 121 can be fixed in a limiting mode through the flange part 1322, when the plate part 121 contracts in the welding process, due to the fact that the flange part 1322 is welded and fixed with the jacking block 122 of the core body part 12, the certainty of the position of the valve seat matching part 132 in the core body part 12 can be guaranteed, the position of the valve seat matching part 132 affected after the plate contraction is reduced, and the risk of fluid leakage between the valve seat matching part 132 and a valve seat is reduced.

The core member 12 has a bottom pressing block 123, a portion of the connecting member 13 extends into the bottom pressing block 123, the bottom pressing block 123 has a welding fitting 125, a welding section 1352 is located on the bottom pressing block 123, the welding section 1352 is located on the welding fitting 125, the welding section 1352 is welded to the bottom pressing block 123, and the first end 134 is welded to the core member 12. So, connecting piece 13 can be in core part welding process, and welded fastening together with the core part can once weld the completion, and processing is convenient.

The valve seat matching part 132 has a bottom end part 1328, the draft tube 133 is welded and fixed with the bottom end part 1328, and the part of the draft tube 133 extends into the valve seat matching part 132; the draft tube 133 has a first portion 1331 and a second portion 1332, at least a portion of the first portion 1331 extends into the valve seat fitting 132, and at least a portion of the first portion 1331 is welded to the valve seat fitting 132. The second end of the connection member 13 is disposed at the second portion of the draft tube 133, and a portion of the second portion 1332 of the draft tube 133 is located at the welding fitting 125, and is welded and fixed with the welding fitting 125.

The bottom pressing block 123 has a protrusion 1232, the protrusion 1232 extends into the first duct 1211, the protrusion 1232 has a communication hole 1231 communicating with the first duct 1211, the welding fitting portion 125 is disposed on the inner wall of the protrusion 1232, the welding section extends into the communication hole 1231 of the protrusion 1232, and the outer wall of the protrusion 1232 is welded and fixed to the plate portion 121.

The draft tube 133 has a flared portion 1333, the flared portion 1333 does not extend into the valve seat fitting portion 132, and the flared portion 1333 is fitted and limited with the bottom end portion 1328 of the valve seat fitting portion 132. Thus, when the core component 12 is welded, due to the shrinkage of the plate part 121, the drainage tube 133 is blocked by the bottom of the flaring part 1333 and the valve seat matching part 132 if moving upwards towards the valve seat matching part 132 through the arrangement of the flaring part 1333, so that the position of the drainage tube 133 extending into the valve seat matching part 132 is determined, the risk that the drainage tube 133 extends into the valve seat matching part 132 too deeply to cause the sealing matching between the base section 1111 and the connecting part 13 is reduced, and the influence on the flow channel between the base section 1111 and the drainage tube 133 is reduced.

Further, the flange portion 1322 has a stopper groove 1323, the first plate 1214a has a stopper projection (not shown), and the stopper groove 1323 is engaged with the stopper projection, and the connecting member 13 is prevented from moving in the circumferential direction, contributing to the stability of the structure and the stability of the sealing property.

Referring to fig. 4 and 5, fig. 4 and 5 are schematic views showing a structure of the heat exchanger 2. Although some reference numerals in fig. 4 are not indicated below, reference numerals for the same parts in the above-described embodiment are also denoted in fig. 4 for the convenience of understanding and avoiding repetitive drag. The heat exchange device 2 at least comprises a first flow passage 101 and a second flow passage, and fluid in the first flow passage 101 can exchange heat with fluid in the second flow passage; the fluid in the first flow passage 101 may be a refrigerant and the fluid in the second flow passage may be a cooling fluid. The heat exchange device may also have a third flow passage, a fourth flow passage, etc.

The heat exchange device 2 comprises a valve core component 11, a core component 12 and a connector 13, wherein the valve core component 11 and the core component 12 are assembled and fixed, and the connector 13 and the core component 12 are fixedly arranged, for example, welded. The spool member 11 may be, for example, a spool structure of an expansion valve.

The core member 12 includes a top press piece 122, a plate portion 121, and a bottom press piece 123, and the top press piece 122, the plate portion 121, and the bottom press piece 123 are welded and fixed. The plate portion 121 has at least a first port 1211, a second port 1213, and a plate-to-plate passage 1212, the first port 1211, the plate-to-plate passage 1212, and the second port 1213 are connected, and the first flow channel 101 includes a portion of the first port 1211, the second port 1213, and the plate-to-plate passage 1212. The first orifice 1211 and the second orifice 1213 are orifices when the core member 12 is not assembled with the valve core member 11.

At least a portion of the spool member 11 extends into the first passage 1211, and at least a portion of the connector 13 extends into the first passage 1211.

The core member 12 has a plurality of plates stacked one on another, and each adjacent plate is welded and fixed to the other, and each plate has at least a first hole and a second hole, and the first holes of the plates are aligned with each other and the second holes of the plates are aligned with each other along the stacking direction of the plates. The first and second holes are located adjacent to the edges of the plate, so that the fluid flowing through the plate can have a longer flow path, which helps to improve the heat exchange efficiency. The first apertures of each plate are aligned to form a portion of the first aperture 1211 and the second apertures of each plate are aligned to form a portion of the second aperture 1213.

The top press piece 122 has a third hole 1221, the third hole 1221 being aligned with the first hole, and the bottom press piece 123 has a communication hole 1231, the communication hole 1231 being aligned with the first hole.

The heat exchange device 2 comprises a communication channel 103 and another communication channel 104, the communication channel 103 is communicated with the connecting channel 138 of the connecting piece 13, the another communication channel 104 can be communicated with the second pore channel 1213, so that fluid can enter from the communication channel 103, and after the fluid passes through the connecting channel 138 of the connecting piece 13 and is throttled and regulated by the valve core component 11, the fluid enters the interplate channels 1212 of the core component 12 to exchange heat with the second channel fluid, the flow path is simple, and the heat exchange efficiency is high. Of course, in other cases, the other communication passage 104 may not directly communicate with the second cell 1213, for example, a pipe may be provided in the second cell 1213 to communicate with the other communication passage 104. In other cases, the other communication channel 104 may not be in communication with the interplate channels 1212 through the second cell channels 1213, the other communication channel 104 may be disposed on the side of the core member 12 where the communication channel 103 is disposed, and the other communication channel 104 may be adjacent to the communication channel 103 and not in direct communication with the communication channel 103.

The core element 12 has a third plate 1214b and a fourth plate 1215b, the third plate 1214b and the fourth plate 1215b being welded together, the third plate 1214b having a first annular projection 1219a, the fourth plate 1215b having a second annular projection 1219b, the first annular projection 1219a providing a first aperture, the second annular projection 1219b providing a first aperture, a first passage 1211 extending through the first annular projection 1219a and the second annular projection 1219b, the first annular projection 1219a extending into the first aperture of the plate adjacent to the third plate 1214b, the second annular projection 1219b extending into the first aperture of the plate adjacent to the fourth plate 1215b, a gap being provided between the first annular projection 1219a and the wall of the plate adjacent to the third plate 1214b providing the first aperture, a gap being provided between the second annular projection 1219b and the wall of the plate adjacent to the fourth plate 1215b, such that fluid can flow through the first annular projection 1219a, and into the inter-plate channels 1212 for heat exchange.

The valve body member 11 has a valve seat portion 111, at least a part of the valve seat portion 111 is located in the first port 1211, the valve seat portion 111 has a peripheral opening 1113, an orifice 1114, and a bottom opening 1115, the peripheral opening 1113 communicates with the first port 1211, and the bottom opening 1115 communicates with the connection passage 138 of the connector 13. The spool member 11 may be a spool portion of an electronic expansion valve.

The valve seat portion 111 has a base section 1111 having a bottom opening 1115 and a middle section 1112 having a peripheral opening 1113, the middle section 1112 being adjacent to the first side 124 of the core component 12 relative to the base section 1111 in the stacking direction of the core components 12. The middle section 1112 is located in the first passage 1211, so that the depth of the valve core component 11 assembled to the core component 12 is relatively deep, which helps to reduce the height of the valve core component 11 protruding from the core component 12, and helps to make the overall structure smaller and more compact. Wherein the first side 124 of the core member 12 refers to the side of the core member 12 on which the core member 11 is disposed.

At least a portion of valve seat portion 111 extends into first annular protrusion 1219a, and base section 1111 is sealingly disposed with first annular protrusion 1219 a; base section 1111 is provided with a first groove 1116, and the heat exchange device has a first seal 14, the first seal 14 being located in the first groove 1116, the first seal 14 and the first annular protrusion 1219a being tightly fitted to achieve sealing therebetween, so that leakage between base section 1111 and the first annular protrusion 1219a is effectively prevented.

The side of the core component 12, which is provided with the valve core component 11, is taken as the upper side, and the middle section 1112 is positioned above the connecting piece 13; after entering from the bottom opening 1115, the fluid passes through the orifice 1114 and then flows out from the peripheral opening 1113, so that the fluid that has just entered the core member 12 is depressurized by the expansion valve, exits from the peripheral opening 1113, enters the interplate passages 1212, and exchanges heat with the fluid in the second flow passage. Throttling and pressure reduction of the refrigerant are completed inside the core body part 12, connection with a subsequent heat exchange link is smooth, and the heat exchange efficiency of subsequent heat exchange is reduced due to the fact that factors such as gas-liquid stratification of the refrigerant after throttling and pressure reduction in a longer pipeline are caused by pipeline arrangement.

The connecting member 13 has a first end 134 and a second end 135, and at least a part of the first end 134 is welded and fixed to the second annular projection 1219 b. Specifically, at least a portion of the first end 134 extends into the second annular protrusion 1219b, and at least a portion of an outer wall of the first end 134 is welded to an inner wall of the second annular protrusion 1219 b. For example, a welding ring may be provided for welding.

At least part of the second end portion 135 is welded and fixed to the bottom pressing block 123, and at least part of the second end portion 135 extends into the position of the bottom pressing block 123 where the first hole is formed.

The first end 134 has a first section 1341 and a second section 1342, the first section 1341 of the first end 134 extends into the second annular protrusion 1219b, the second section 1342 does not extend into the second annular protrusion 1219b, the second section 1342 has an outer diameter greater than the first section 1341, the second section 1342 has an outer diameter greater than the inner diameter of the second annular protrusion 1219b, for example, the outer diameter of the second section 1342 may be reduced toward the first section 1341. Thus, when the stacked plates are welded in the furnace, the plates shrink, which causes the height of the stacked core component 12 to decrease, and at this time, through the arrangement of the second section 1342, during the shrinking process of the plates, the first end 134 of the connecting piece 13 is difficult to extend into the bottom opening 1115 of the base section 1111, so that the influence of the connecting piece 13 on the base section 1111 caused by the height change caused by shrinkage during the welding process of the core component 12 is reduced, which contributes to more stable matching between the poppet valve core component 11 and the core component 12 and also contributes to the sealing property between the fluid valve core component 11 and the core component 12.

In addition, the second end 135 of the connecting member 13 has a welded section 1352 and an adjacent section 1351, the welded section 1352 of the connecting member 13 is welded to the welded fitting 125, the adjacent section 1351 is adjacent to the welded section 1352, and the adjacent section 1351 is close to the first end 134 relative to the welded section 1352, the outer diameter of the welded section 1352 is smaller than or equal to the inner diameter of the welded fitting 125, and the outer diameter of the adjacent section 1351 is smaller than or equal to the inner diameter of the welded fitting 125; when the core body component is in a contraction condition in the welding process, because the connecting piece is provided with the welding section and the adjacent section, the distance between one end of the welding matching part, which is far away from the valve core component, and one end of the welding section, which is far away from the valve core component, is more than or equal to zero; the welding matching part can move relatively to the connecting piece in the welding shrinkage process of the core body component, and the welding tightness of the connecting piece and the core body component is good. In addition, the outer diameter of the adjacent section 1351 may be greater than or equal to the outer diameter of the welded section 1352, and the welded section 1352 may be reduced in diameter relative to the adjacent section 1351, which is more beneficial to the relative movement of the plate portion with respect to the connecting member during the welding process.

The welded section 1352 may also have a first section welded with the weld fitting 125 and a second section adjacent to and distal from the first end relative to the first section, the second section having an outer diameter less than or equal to the inner diameter of the first section; the first section may not be provided corresponding to the weld fitting 125 when the connector 13 is fitted into the core member 12, and when the core member is contracted, the first section moves toward the weld fitting 125 and is welded and fixed to the weld fitting 125.

Referring to fig. 6, fig. 6 is a schematic cross-sectional view of a structure of a heat exchange device. To show the structure more clearly, some reference numerals of the following structure may not be illustrated in fig. 6, but reference may be made to fig. 2 and 3. Although some reference numerals on fig. 6 are not indicated below, reference numerals for the same parts in the above-described embodiment will also be indicated in fig. 6 for the sake of understanding and avoiding repetitive drag.

The heat exchange device at least comprises a first flow passage 101 and a second flow passage, and fluid in the first flow passage 101 can exchange heat with fluid in the second flow passage; the fluid in the first flow passage 101 may be a refrigerant and the fluid in the second flow passage may be a cooling fluid. The heat exchange device may also have a third flow passage, a fourth flow passage, etc.

The heat exchange device 1 includes a valve core component 11, a core component 12, and a connector 13, wherein the valve core component 11 and the core component 12 are assembled and fixed, and the connector 13 and the core component 12 are fixedly disposed, for example, welded. The spool member 11 may be, for example, a spool structure of an expansion valve.

The core member 12 includes a top press piece 122, a plate portion 121, and a bottom press piece 123, and the top press piece 122, the plate portion 121, and the bottom press piece 123 are welded and fixed. The plate portion 121 has at least a first port 1211, a second port 1213, and a plate-to-plate passage 1212, the first port 1211, the plate-to-plate passage 1212, and the second port 1213 are connected, and the first flow channel 101 includes a portion of the first port 1211, the second port 1213, and the plate-to-plate passage 1212. The first orifice 1211 and the second orifice 1213 are orifices when the core member 12 is not assembled with the valve core member 11.

The plate portion 121 has a plurality of plates stacked and fixed by welding, each adjacent plate has at least a first hole and a second hole, and the first holes of the plates are aligned and the second holes of the plates are aligned along the stacking direction of the plates. The first and second holes are located adjacent to the edges of the plate, so that the fluid flowing through the plate can have a longer flow path, which helps to improve the heat exchange efficiency. The first apertures of each plate are aligned to form a portion of the first aperture 1211 and the second apertures of each plate are aligned to form a portion of the second aperture 1213.

The top press piece 122 has a third hole 1221, the third hole 1221 being aligned with the first hole, and the bottom press piece 123 has a communication hole 1231, the communication hole 1231 being aligned with the first hole.

The heat exchange device comprises a communication channel 103 and another communication channel 104, the communication channel 103 is communicated with the connecting channel 138 of the connecting piece 13, the other communication channel 104 can be communicated with the second pore channel 1213, so that fluid can enter from the communication channel 103, passes through the inner cavity of the connecting piece 13, enters the interplate channels 1212 of the core body part 12 after being throttled and regulated by the valve core part 11, and exchanges heat with the second channel fluid, the flow path is simple, and the heat exchange efficiency is high. Of course, in other cases, the other communication passage 104 may not directly communicate with the second cell 1213, for example, a pipe may be provided in the second cell 1213 to communicate with the other communication passage 104. In other cases, the other communication channel 104 may not be in communication with the interplate channels 1212 through the second cell channels 1213, the other communication channel 104 may be disposed on the side of the core member 12 where the communication channel 103 is disposed, and the other communication channel 104 may be adjacent to the communication channel 103 and not in direct communication with the communication channel 103.

At least a portion of the spool member 11 extends into the first passage 1211, and at least a portion of the connector 13 extends into the first passage 1211.

The valve body member 11 has a valve seat portion 111, at least a part of the valve seat portion 111 is located in the first port 1211, the valve seat portion 111 has a peripheral opening 1113, an orifice 1114, and a bottom opening 1115, the peripheral opening 1113 communicates with the first port 1211, and the bottom opening 1115 communicates with the connection passage 138 of the connector 13. The spool member 11 may be a spool portion of an electronic expansion valve.

The valve seat portion 111 has a base section 1111 and an intermediate section 1112, the base section 1111 having a bottom opening 1115, the base section 1111 being located inside the attachment element 13, the peripheral side of the base section 1111 being sealingly arranged with the annular wall portion 131 of the attachment element 13. The middle section 1112 has a peripheral opening 1113, the middle section 1112 being adjacent the first side 124 of the core components 12 relative to the base section 1111 in the stacking direction of the core components 12, the middle section 1112 being located at the plate portion 121, the peripheral opening 1113 being in communication with the interplate channel 1212. Thus, the depth of the valve core component 11 assembled to the core component 12 is deeper, which helps to reduce the height of the valve core component 11 protruding from the core component 12, and helps to make the overall structure smaller and more compact.

The coupling member 13 has an annular wall portion 131, and the valve seat portion 111 is provided in a sealing manner with the annular wall portion 131. The height of the annular wall portion 131 is larger than the height of the base section 1111 in the sheet stacking direction of the core member 12. Base section 1111 is provided with a first groove 1116, and the heat exchange device has a first sealing member 14, wherein the first sealing member 14 is located in the first groove 1116, and the first sealing member 14 is tightly fitted with the annular wall portion 131 to realize sealing between the base section 1111 and the annular wall portion 131, so that leakage between the base section 1111 and the annular wall portion 131 is effectively prevented.

The attachment 13 has side holes 1321, and the side holes 1321 are closer to the first side portion 124 of the core member 12 than to the annular wall portion 131 in the sheet stacking direction of the core member 12. The side hole 1321 corresponds to the peripheral opening 1113 of the valve body member 11. Thus, fluid enters through the draft tube 133 from the bottom opening 1115 of the valve core member 11, through the orifice 1114, the peripheral opening 1113, the side holes 1321 into the first port 1211, and into the interplate channels 1212 communicating with the first port 1211 for exchanging heat with the fluid in the second flow channel.

The connector 13 has a flange portion 1322, and the flange portion 1322 is welded and fixed to the core member 12. The core member 12 includes a first plate 1214a and a second plate 1215a, the first plate 1214a is fixed to the second plate 1215a by welding, and the top or bottom of the flange 1322 is fixed to the first plate 1214a by welding; or the top or bottom of the flange portion 1322 is welded to the second plate 1215 a.

The core component 12 is provided with the pressing block 122, the flange part 1322 is fixedly welded with the pressing block 122, the connecting piece 13 and the plate part 121 can be limited and fixed through the flange part 1322, when the plate part 121 contracts in the welding process, the flange part 1322 is fixedly welded with the pressing block 122 of the core component 12, the position certainty of the connecting piece 13 in the core component 12 can be ensured, the position of the connecting piece 13 influenced after the plate contracts is reduced, and the fluid leakage risk between the connecting piece 13 and the valve seat part 111 is reduced.

The core member 12 has a bottom pressing block 123, a portion of the connecting member 13 extends into the bottom pressing block 123, the bottom pressing block 123 has a welding fitting portion 125, the second end portion 135 extends into the welding fitting portion 125, and the second end portion 135 is welded to the bottom pressing block 123.

The bottom pressing block 123 has a communication hole 1231 communicating with the first duct 1211, the welding engagement portion 125 is provided on an inner wall of the bottom pressing block 123 where the communication hole 1231 is provided, a portion of the second end portion 135 extends into the communication hole 1231, and the thickness of the bottom pressing block 123 is larger than the thickness of 5 plate pieces. Therefore, in the welding process of the core body component 12, the bottom pressing block 123 can be welded with the outer wall of the connecting piece 13 in a matched mode, and the sealing performance is guaranteed.

The second end 135 of the connecting member 13 has a welded section 1352 and an adjacent section 1351, the welded section 1352 of the connecting member 13 is welded to the welded fitting 125, the adjacent section 1351 is adjacent to the welded section 1352, and the adjacent section 1351 is close to the first end 134 relative to the welded section 1352, the outer diameter of the welded section 1352 is smaller than or equal to the inner diameter of the welded fitting 125, and the outer diameter of the adjacent section 1351 is smaller than or equal to the inner diameter of the welded fitting 125; when the core body component is in a contraction condition in the welding process, because the connecting piece is provided with the welding section and the adjacent section, the distance between one end of the welding matching part, which is far away from the valve core component, and one end of the welding section, which is far away from the valve core component, is more than or equal to zero; the welding matching part can move relatively to the connecting piece in the welding shrinkage process of the core body component, and the welding tightness of the connecting piece and the core body component is good. In addition, the outer diameter of the adjacent section 1351 may be greater than or equal to the outer diameter of the welded section 1352, and the welded section 1352 may be reduced in diameter relative to the adjacent section 1351, which is more beneficial to the relative movement of the plate portion with respect to the connecting member during the welding process.

Referring to fig. 7, fig. 7 illustrates a cross-sectional view of another embodiment of a heat exchange device. General structure of the heat exchange device referring to the heat exchange device shown in fig. 6, some reference numerals on fig. 7 are not indicated below, but reference numerals of the same parts in the above embodiment are also denoted on fig. 7 for the convenience of understanding and avoiding repetitive drag. The core component 12 has a fifth plate 1214c, the fifth plate 1214c has an extension portion 1217, the extension portion 1217 is welded and fixed with the outer wall of the connecting piece 13, the core component 12 is assembled with the spool component 11 as an upper portion, and the extension portion 1217 is located below the middle section 1112.

The first duct 1211 has a first sub-duct 1211a and a second sub-duct 1211b, and the extension portion 1217 is welded to the outer wall of the connecting member 13 to separate the first sub-duct 1211a and the second sub-duct 1211 b.

The core component 12 has a sixth plate 1215c having a blocking portion 1218, the blocking portion 1218 being located at a second orifice 1213, the second orifice 1213 including a third sub-orifice 1213a and a fourth sub-orifice 1213b, the blocking portion 1218 separating the third sub-orifice 1213a and the fourth sub-orifice 1213 b.

The interplate channels 1212 have a first route 1212a, a second route 1212b, and a third route 1212c, wherein the first route 1212a flows in an opposite direction to the second route 1212b, and the second route 1212b flows in an opposite direction to the third route 1212 c; thus, after entering the connecting member 13 through the communication channel 103, the fluid enters from the bottom opening 1115, and enters into the first sub-channel 1211a, the first route 1212a, the third sub-channel 1213a, the second route 1212b, the second sub-channel 1211b, the third route 1212c and the other communication channel 104 through the orifice 1114 and the peripheral opening 1113. After entering the heat exchange device, the fluid can not only realize throttling depressurization, but also the fluid entering the interplate channels 1212 from the peripheral openings 1113 can directly exchange heat with the fluid in the interplate channels 1212 adjacent to each other, and throttling and heat exchange can be completed inside the core body component 12, which is not only beneficial to the phase stability of the fluid, but also beneficial to the improvement of heat exchange efficiency.

The second end 135 of the connecting member 13 has a welded section 1352 and an adjacent section 1351, the welded section 1352 of the connecting member 13 is welded to the welded fitting 125, the adjacent section 1351 is adjacent to the welded section 1352, and the adjacent section 1351 is close to the first end 134 relative to the welded section 1352, the outer diameter of the welded section 1352 is smaller than or equal to the inner diameter of the welded fitting 125, and the outer diameter of the adjacent section 1351 is smaller than or equal to the inner diameter of the welded fitting 125; when the core body component is in a contraction condition in the welding process, because the connecting piece is provided with the welding section and the adjacent section, the distance between one end of the welding matching part, which is far away from the valve core component, and one end of the welding section, which is far away from the valve core component, is more than or equal to zero; the welding matching part can move relatively to the connecting piece in the welding shrinkage process of the core body component, and the welding tightness of the connecting piece and the core body component is good. In addition, the outer diameter of the adjacent section 1351 may be greater than or equal to the outer diameter of the welded section 1352, and the welded section 1352 may be reduced in diameter relative to the adjacent section 1351, which is more beneficial to the relative movement of the plate portion with respect to the connecting member during the welding process.

The thickness of the welding matching part is larger than the thickness of the superposition of at least two sheets along the extending direction of the first pore channel; the thickness of the weld fitting may also be greater than the thickness of the stack of 5 sheets.

The welded section 1352 may also have a first section welded with the weld fitting 125 and a second section adjacent to and distal from the first end relative to the first section, the second section having an outer diameter less than or equal to the inner diameter of the first section; the first section may not be provided corresponding to the weld fitting 125 when the connector 13 is fitted into the core member 12, and when the core member is contracted, the first section moves toward the weld fitting 125 and is welded and fixed to the weld fitting 125.

It should be noted that the above is merely an example, and the extension 1217 may be formed by punching integrally with the fifth plate or by welding with the fifth plate. Of course, as other embodiments, the connecting member may also integrally protrude out of the extension portion, or the extension portion may be fixed by welding.

It should be noted that: although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that various combinations, modifications and equivalents of the present invention can be made by those skilled in the art, and all technical solutions and modifications thereof without departing from the spirit and scope of the present invention are encompassed by the claims of the present invention.