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,阀芯部件具有阀座部,所述阀座部的至少部分位于所述第一孔道,所述阀座部具有底座段和中部段,所述底座段具有底部开口,所述中部段具有周部开口,所述阀座部具有节流孔,所述节流孔能连通所述周部开口和所述底部开口,所述中部段位于所述板片部,且所述周部开口与所述板间通道连通；所述热交换装置包括连接件,所述连接件的至少部分伸入所述第一孔道,所述底部开口与所述连接通道连通；所述热交换装置包括连通通道,所述连通通道与所述连接通道连通。该热交换装置结构小巧。(The invention discloses a heat exchange device, which comprises a valve core component and a core component, wherein the valve core component is provided with a valve seat part, at least part of the valve seat part is positioned in a first duct, the valve seat part is provided with a base section and a middle section, the base section is provided with a bottom opening, the middle section is provided with a peripheral opening, the valve seat part is provided with an orifice which can be communicated with the peripheral opening and the bottom opening, the middle section is positioned in a plate part, and the peripheral opening is communicated with an inter-plate channel; the heat exchange device comprises a connecting piece, at least part of the connecting piece extends into the first pore channel, and the bottom opening is communicated with the connecting channel; the heat exchange device includes a communication passage that communicates with the connection passage. The heat exchange device has a small structure.)

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, the plate part is at least provided with a first pore channel, a second pore channel and an interplate channel, and the first pore channel, the interplate channel and the second pore channel are communicated;

the valve element component having a valve seat portion with a base section having a bottom opening and a middle section having a peripheral opening, the valve seat portion having an orifice capable of communicating the peripheral opening and the bottom opening, the middle section and the base section extending into the first bore, and the peripheral opening communicating with the first bore;

the heat exchange device comprises a connecting piece, the connecting piece is provided with a connecting channel, the connecting piece is provided with a first end part, the first end part of the connecting piece is positioned in the first hole channel, the bottom opening of the base section is communicated with the connecting channel, and the connecting channel is not directly communicated with the first hole channel;

the core member has a first side portion and a second side portion, at least a portion of the valve core member is located at the first side portion, and the heat exchange device has a communication passage located at the second side portion, the communication passage communicating with the connection passage.

2. The heat exchange device of claim 1, wherein: the base section extends into the connecting piece, the connecting piece is provided with an annular wall part, and the base section and the annular wall part are arranged in a sealing mode;

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.

3. The heat exchange device of claim 2, wherein: the connecting piece is provided with a flange part which is fixedly welded with the core body component; the middle section extends into the valve seat matching part, the valve seat matching part is provided with a side hole corresponding to the peripheral opening, and the side hole is closer to a first side part of the core component relative to the annular wall part in the plate stacking direction of the core component;

the height of the annular wall portion is greater than the height of the seat section in the sheet stacking direction of the core member.

4. A unit according to claim 3 in which: the connector has a valve seat mating portion and a drainage tube, the valve seat mating portion has the flange portion, the valve seat mating portion has the annular wall portion, the valve seat mating portion is disposed in sealing relation with the base section,

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 of the valve seat matching part.

5. A heat exchange unit according to claim 3 or 4, wherein: 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 2, wherein: the connecting piece is in the form of a drainage tube, one side of the core body part, which is arranged on the valve core part, is arranged above the connecting piece, and the middle section is positioned above the connecting piece;

the base section is provided with a first groove and a second groove, the connecting piece is provided with an annular wall portion, the base section and the annular wall portion are arranged in a sealing mode, and the first groove is close to the peripheral opening relative to the annular wall portion in the extending direction of the first duct; the first groove corresponds to the second groove in position, and the second groove is closer to the peripheral opening relative to the first groove; the connecting piece is provided with a limiting groove, and the position of the limiting groove is opposite to that of the second groove;

the heat exchange device is provided with a limiting piece, and at least part of the limiting piece is clamped into the second groove and the limiting groove.

7. The heat exchange device of claim 2, wherein: one side of the core body part, which is provided with the valve core part, is taken as the upper part, and the middle section is positioned above the connecting piece;

the base section has screw thread portion, the connecting piece has internal thread portion, the base section with connecting piece threaded connection.

8. The heat exchange device of claim 7, wherein: the connecting piece is provided with a valve seat matching part and a drainage tube, the valve seat matching part is in threaded connection with the base section, the part of the drainage tube extends into the valve seat matching part, and the drainage tube is welded and fixed with the valve seat matching part.

9. The heat exchange device of claim 2, wherein: one side of the core body part, which is provided with the valve core part, is taken as the upper part, and the middle section is positioned above the connecting piece;

the connecting piece is provided with a second end part, the base section extends into the first end part, and the base section and the first end part are arranged in a sealing mode;

the heat exchange device is provided with a bottom pressing block, the bottom pressing block is fixedly welded with the plate piece portion, the bottom pressing block is provided with a communication hole, the communication hole is communicated with the first pore channel, the bottom pressing block is provided with a bulge, at least part of the bulge extends into the first pore channel, the second end portion of the connecting piece is located on the bottom pressing block, and the second end portion of the connecting piece is fixedly welded with the bottom pressing block.

10. The heat exchange device of claim 1, wherein: the connecting piece is in the form of a drainage tube; one side of the core body part, which is provided with the valve core part, is taken as the upper part, and the middle section is positioned above the connecting piece;

the core component 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 part, the fourth plate is provided with a second annular convex part, the base section extends into the first annular convex part, and the base section and the first annular convex part 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.

11. The heat exchange device of claim 10, wherein: the first annular convex part is provided with a first hole, the second annular convex part is provided with a first hole, the first pore passage penetrates through the first annular convex part and the second annular convex part, the first annular convex part extends into the first hole of the plate adjacent to the third plate, the second annular convex part extends into the first hole of the plate adjacent to the fourth plate, a gap is reserved between the first annular convex part and the wall part of the plate adjacent to the third plate, which is provided with the first hole, and a gap is reserved between the second annular convex part and the wall part of the plate adjacent to the fourth plate, which is provided with the first hole.

12. The heat exchange device according to claim 10 or 11, wherein: the connecting piece is provided with a second end part, at least part of the first end part is fixedly welded with the second annular convex part, and the second end part is fixedly welded 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 reduced towards the first section.

Technical Field

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

Background

Two components, a heat exchanger and an expansion valve, are included in a thermal management system and are typically piped together in the thermal management system.

The heat exchanger and the expansion valve are integrated, and the valve body of the expansion valve is fixed with the heat exchanger, so that the whole structure is compact. But a part of the connection pipe is still connected with the valve body of the expansion valve.

Disclosure of Invention

The invention aims to provide a heat exchange device with a compact structure.

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, the plate part is at least provided with a first pore channel, a second pore channel and an interplate channel, and the first pore channel, the interplate channel and the second pore channel are communicated;

the valve element component having a valve seat portion with a base section having a bottom opening and a middle section having a peripheral opening, the valve seat portion having an orifice capable of communicating the peripheral opening and the bottom opening, the middle section and the base section extending into the first bore, and the peripheral opening communicating with the first bore;

the heat exchange device comprises a connecting piece, the connecting piece is provided with a connecting channel, the connecting piece is provided with a first end part, the first end part of the connecting piece is positioned in the first hole channel, the bottom opening of the base section is communicated with the connecting channel, and the connecting channel is not directly communicated with the first hole channel;

the core member has a first side portion and a second side portion, at least a portion of the valve core member is located at the first side portion, and the heat exchange device has a communication passage located at the second side portion, the communication passage communicating with the connection passage.

According to the technical scheme, the base section and the middle section extend into the first pore channel, the base section of the valve seat portion is provided with the bottom opening, the middle section is provided with the peripheral opening, the peripheral opening is communicated with the first pore channel, the bottom opening is communicated with the connecting channel, and the communicating channel of the heat exchange device is communicated with the connecting channel.

Drawings

FIG. 1 is a schematic view of a first 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 a third embodiment of a heat exchange device;

FIG. 7 is an exploded perspective view of the heat exchange device illustrated in FIG. 6;

FIG. 8 is a schematic partial cross-sectional view of a fourth embodiment of a heat exchange device with the plate portion structure omitted;

FIG. 9 is a schematic partial cross-sectional view of a fifth embodiment of a heat exchange device with the plate portion structure omitted;

FIG. 10 is a schematic cross-sectional view of a sixth embodiment of a heat exchange device;

FIG. 11 is a schematic cross-sectional view of a seventh embodiment of a heat exchange device;

FIG. 12 is a schematic cross-sectional view of an eighth embodiment of a heat exchange device;

FIG. 13 is a schematic view, partly in section, of a ninth embodiment of a heat exchange device, illustrating the manner in which a connecting member engages a plate portion;

FIG. 14 is a partial cross-sectional view of a tenth embodiment of the heat exchange device illustrating the mating of the connector to the bottom block.

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 1213, so that fluid can enter from the communication channel 103, passes through the connecting channel of the connecting piece 13, enters the first hole after being throttled and regulated by the valve core component 11, and then enters the plate-to-plate channel 1212 of the core component 12 to exchange heat with the fluid of the second hole, and 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 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 being located at the plate portion 121, the peripheral opening 1113 being in communication with the first porthole. 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 outer wall of 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 sheets 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.

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 second portion 1332 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. Subsequent embodiments all proceed similarly.

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 throttling regulation by the valve core component 11 through the connecting channel of the connecting piece 13, 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 and 7, fig. 6 and 7 are schematic views showing a structure of the heat exchanger.

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 comprises a valve core component 11, a core component 12 and a connecting piece 13, wherein the valve core component 11 and the core component 12 are assembled and fixed, and the connecting piece 13 and the core component 12 are assembled and fixed. 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 core member 12 has at least a first duct 1211, a second duct 1213 and a plate-to-plate passage 1212, the first duct 1211, the plate-to-plate passage 1212 and the second duct 1213 are connected, and the first flow passage 101 includes a portion of the first duct 1211, the second duct 1213 and the plate-to-plate passage 1212.

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 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.

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 connector 13 has a first end 134 and a second end 135, the first end 134 is disposed in cooperation with the base section 1111, the first end of the connector is located in the first hole, the base section 1111 has a first groove 1116, the heat exchange device has a first sealing member 14 located between the first end of the connector and the valve core member, 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 131 of the connector 13 to achieve sealing between the first end of the connector and the valve core member, so that leakage between the base section 1111 and the connector 13 is effectively prevented.

Base section 1111 has a second recess 1117, and second recess 1117 is closer to peripheral opening 1113 than to first recess 1116. Connecting member 13 has a first end 134 and a second end 135, wherein first end 134 is disposed to mate with base section 1111, and first end 134 has a limiting recess 136, and limiting recess 136 is disposed opposite to second recess 1117. The heat exchange device has a limiting member 16, such as a retaining ring, a portion of the retaining ring is located in the second groove 1117, a portion of the retaining ring is located in the limiting groove 136, and the valve core member 11 and the connecting member 13 are limited and fixed by the retaining ring.

Second end 135 is fixedly disposed with bottom compression block 123, second end 135 has a recessed portion 1353, the heat exchanging device includes second seal 15, recessed portion 1353 is for placement of second seal 15, and second end 135 is sealingly disposed with bottom compression block 123.

Referring to fig. 8, fig. 8 illustrates the fitting manner of the spool member 11, the connecting member 13 and the bottom press piece 123, in which the plate structure of the core member 12 is omitted. To more clearly show the structure, some reference numerals of the following structure may not be illustrated in fig. 8, but reference may be made to fig. 2.

The valve seat portion 111 has a middle section 1112 and a base section 1111, the base section 1111 having a bottom opening 1115, the 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.

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 connector 13 has a first end 134 and a second end 135, at least a portion of the base section 1111 extends into the first end 134, the base section 1111 has an externally threaded portion 1119, the connector 13 has an internally threaded portion 1326, the base section 1111 is threadably connected to the connector 13;

the base section 1111 has a projection 1118, and the projection 1118 projects relative to the internal thread 1326 in the radial direction of the valve core member 11.

The heat exchange device has a first seal member 14, the first seal member 14 being located between the boss 1118 and the first end 134.

Further, the connector 13 has a valve seat mating portion 132 and a drainage tube 133, the valve seat mating portion 132 has a first section 1324 and a second section 1325, the first section 1324 of the valve seat mating portion 132 is disposed in mating relation with the valve core member 11, the first section 1324 of the valve seat mating portion 132 has an internal threaded portion 1326, the base section 1111 has an external threaded portion 1119, and the valve core member 11 is threadedly connected with the valve seat mating portion 132. The base section 1111 has a projection 1118, and the projection 1118 projects relative to the internal thread 1326 in the radial direction of the valve body member 11. The first seal 14 is located between the boss 1118 and the valve seat mating portion 132.

The second section 1325 of the valve seat fitting portion 132 is disposed to fit with the draft tube 133. The draft tube 133 extends into the second section 1325 of the valve seat matching part 132, the outer wall of the draft tube 133 is welded and fixed with the inner wall of the second section 1325 of the valve seat matching part 132, and the draft tube 133 is welded with the valve seat matching part 132 by arranging a welding lug for example.

The valve seat fitting part 132 has a stopper protrusion 1327, and the end of the draft tube 133 is disposed opposite to the stopper protrusion 1327. The limiting protrusion 1327 can be used for limiting the depth of the drainage tube 133 extending into the valve seat matching part 132, and when the core body part 12 shrinks in the welding process, the depth of the drainage tube 133 is guaranteed not to exceed the limiting protrusion 1327, so that the sealing matching and the flow channel connection of the base section 1111 and the valve seat matching part 132 are facilitated.

Alternatively, the position of the drain tube 133 and the second segment 1325 of the valve seat matching part 132 can be fixed by a screw connection.

Referring to fig. 9, fig. 9 illustrates the fitting manner of the spool member 11, the connecting member 13 and the bottom press piece 123, in which the plate structure of the core member 12 is omitted. To more clearly show the structure, some reference numerals of the following structure may not be illustrated in fig. 9, but reference may be made to fig. 2.

The valve seat portion 111 has a middle section 1112 and a base section 1111, the base section 1111 having a bottom opening 1115, the 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.

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.

Connector 13 has a first end 134 and a second end 135, first end 134 being disposed in cooperation with valve seat portion 111 and second end 135 being disposed in cooperation with bottom block 123.

The connecting element 13 has a surrounding wall 131, a base section 1111 extends into the connecting element 13, and the base section 1111 is sealingly arranged with the surrounding wall 131. The heat exchange device has a bottom pressing block 123, the bottom pressing block 123 is welded and fixed to the plate portion 121, the bottom pressing block 123 has a communication hole 1231, the communication hole 1231 is communicated with the first duct 1211, the bottom pressing block 123 has a protrusion 1232, at least a portion of the protrusion 1232 extends into the first duct 1211, the second end portion 135 of the connecting member 13 is located on the bottom pressing block 123, and at least a portion of the second end portion 135 is welded and fixed to the bottom pressing block 123. The second end 135 has a flared portion 1354, and the flared portion 1354 is disposed in a limiting manner with the bottom pressing block 123, for example, by riveting.

Referring to fig. 10, fig. 10 is a schematic cross-sectional view of a structure of a heat exchange device. To more clearly illustrate the structure, some reference numerals of the following structure may not be illustrated in fig. 10, but reference may be made to fig. 2 and 3.

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, and after throttling regulation by the valve core component 11 through the connecting channel of the connecting piece 13, 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.

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, 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 plates. 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. 11, fig. 11 illustrates a cross-sectional view of another embodiment of a heat exchange device. General structure of heat exchange device referring to the heat exchange device shown in fig. 10, the core member 12 has a fifth plate 1214c, the fifth plate 1214c has an extension portion 1217, the extension portion 1217 is welded and fixed to the outer wall of the connector 13, the core member 12 is fitted over the valve core member 11, 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.

Referring to fig. 12, fig. 12 is a schematic cross-sectional view of a structure of a heat exchange device.

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 comprises a valve core component 11, a core component 12 and a connecting piece 13, wherein the valve core component 11 and the core component 12 are assembled and fixed, and the connecting piece 13 and the core component 12 are fixedly arranged. 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, the top press piece 122 and the plate are welded and fixed, and the bottom press piece 123 is assembled and fixed with the plate portion 121. 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, and after throttling regulation by the valve core component 11 through the connecting channel of the connecting piece 13, 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.

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 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, and then exits from the peripheral opening 1113, and can enter the interplate passages 1212 to exchange 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.

Connector 13 has a first end 134 and a second end 135, first end 134 being disposed in cooperation with valve seat portion 111 and second end 135 being disposed in cooperation with bottom block 123. The connecting element 13 has a surrounding wall 131, a base section 1111 extends into the connecting element 13, and the base section 1111 is sealingly arranged with the surrounding wall 131. The heat exchange device has a bottom pressing block 123, and the bottom pressing block 123 is assembled and fixed with the plate part 121, for example, by screwing.

The coupling 13 has a flange portion 137, and the flange portion 137 is fixed to the core member 12 in a sealing manner; the plate portion 121 has a projection 1220, the projection 1220 projecting away from the spool member 11, the projection 1220 being disposed opposite the bottom press piece 123. The flange 137 is located between the plate portion 121 and the bottom pressing block 123, but the location of the flange 137 between the plate portion 121 and the bottom pressing block 123 is not limited to the fact that the flange 137 is necessarily in contact with the plate portion 121 and the bottom pressing block 123, and here, it is only shown that the flange 137 is located between a partial structure of the plate portion 121 and a partial structure of the bottom pressing block 123.

The flange portion 137 is limited between the plate portion 121 and the bottom press block 123, and can be used to determine the position of the connecting member 13 in the core component 12, stabilize the sealing engagement between the connecting member 13 and the base section 1111, and facilitate the assembly of the connecting member 13 and the core component 11.

The heat exchange device has a second sealing member 15, for example in the form of a gasket, the second sealing member 15 being located between the flange portion 137 and the plate portion 121 for sealing the first aperture 1211. The bottom pressing block 123 has a screw hole 1233, and the bottom pressing block 123 and the plate portion 121 can be fixed by a screw inserted into the screw hole, and the seal between the flange portion 137 and the plate portion 121 can be compressed by the screw fixation. In addition, a third sealing element can be arranged between the flange part 137 and the bottom pressing block 123 of the heat exchange device, so that the connection piece 13 and the core body component 12 are sealed through axial sealing, the sealing performance of the heat exchange device is stabilized, and meanwhile, the processing is simple.

Because the connecting element 13 has two sealing points, the sealing between the connecting element 13 and the valve seat 111 is realized by placing the sealing element in the groove of the base section 1111, so that the base section 1111 and the inner wall of the connecting element 13 are radially sealed, and at this time, the inner wall of the connecting element 13 has a certain roughness requirement, and additional processing treatment needs to be performed on the inner wall of the connecting element 13 to ensure the matching performance required by sealing.

At another sealing point of the connecting member 13, the flange portion 137 is pressed by the bottom pressing block 123, so that the flange portion 137 and the plate portion 121 are axially sealed, and a sealing member is arranged between the flange portion 137 and the plate portion 121, so that the flange portion and the plate portion 121 are sealed in an axial sealing manner, and at this time, the requirement on the roughness of the portion where the flange portion 137 and the plate portion 121 are matched is lower than the requirement on the roughness required in radial sealing. Therefore, the processing of the connecting member 13 is mainly concerned with the matching of the inner wall of the connecting member 13 and the base section 1111, and has fewer processing considerations, simple processing and easy implementation.

Referring to fig. 13, fig. 13 is a simplified diagram showing the fitting relationship between the connector 13 and the core member 12. To more clearly show the structure, some reference numerals of the following structure may not be illustrated in fig. 13, but reference may be made to fig. 12. The manner of matching the connecting member 13 with the base section 1111 can be seen in fig. 12. The coupling 13 has a flange portion 137, the flange portion 137 is welded and fixed to the core member 12, and the flange portion 137 has an upper portion 137a and a lower portion 137b, where a portion where the core member 12 is assembled to the valve body member 11 is an upper portion and the other side of the core member 12 is a lower portion. The upper portion 137a of the flange portion 1322 is welded and fixed to one of the plates of the plate portion 121, and the lower portion 137b of the flange portion 1322 is welded and fixed to one of the plates of the plate portion 121.

Alternatively, the core member 12 may have the bottom block 123, and the lower portion 137b of the flange 1322 may be welded and fixed to the bottom block 123. Thus, after entering from the communication channel 103, the fluid enters the first port 1211 and the interplate channel 1212 through the connection channel 138, the bottom opening 1115, the orifice 1114 and the peripheral opening 1113 of the connection member 13. The fluid is in heat exchange with the fluid in the adjacent interplate channels 1212.

Referring to fig. 14, fig. 14 is a partial cross-sectional schematic view of another heat exchange device. To more clearly illustrate the structure, some reference numerals of the following structure may not be illustrated in fig. 14, but may refer to fig. 12. The manner of matching the connecting member 13 with the base section 1111 can be seen in fig. 12.

The core member 12 has a bottom pressing piece 123, and the bottom pressing piece 123 is welded and fixed to the sheet portion 121. The connecting member 13 has a first end 134 and a second end 135, the first end 134 of the connecting member 13 is disposed to be sealed with the base section 1111 (see fig. 12), the second end 135 of the connecting member 13 extends into the bottom pressing block 123, the second end 135 of the connecting member 13 has a second groove 1117, the heat exchanging device has a second sealing member 15, and the second sealing member 15 is disposed in the second groove 1117 to seal the outer wall of the connecting member 13 with the inner wall of the bottom pressing block 123.