CN113669958A

CN113669958A - Heat exchange device and method for manufacturing heat exchange device

Info

Publication number: CN113669958A
Application number: CN202010362753.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-11-19

Abstract

The invention discloses a heat exchange device and a manufacturing method thereof, and the heat exchange device comprises a valve core component, a core component and a connecting piece, wherein the core component is provided with a plate piece part, 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 middle section is positioned on the plate piece part, and the peripheral opening is communicated with an inter-plate channel; at least part of the connecting piece extends into the first pore canal, and the bottom opening is communicated with the inner cavity of the connecting piece; the connecting piece is assembled and fixed with the valve core part, and the connecting piece is assembled and fixed with the core part. The heat exchange device is simple to process.

Description

Heat exchange device and method for manufacturing heat exchange device

Technical Field

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

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 a small structure and a simple process and a manufacturing method of the heat exchange device.

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 has a valve seat portion having a seat section with a bottom opening and a middle section with a peripheral opening, the valve seat portion having an orifice that can communicate the peripheral opening and the bottom opening; the middle section and the base section extend into the first duct, and the peripheral opening is communicated with the first duct;

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 heat exchange device is provided with a first sealing element, the first end of the connecting piece is assembled and fixed with the valve core component, the first sealing element is positioned between the first end of the connecting piece and the valve core component, and the connecting piece is assembled and fixed with the core component.

In order to realize the purpose, the following technical scheme is adopted: a method of manufacturing a heat exchange device, comprising:

providing plate pieces, and feeding the stacked plate pieces into a furnace for welding, wherein the welded plate pieces are provided with a first pore channel, a second pore channel and an inter-plate channel;

providing a valve core part and a connecting piece, extending a part of a valve seat part of the valve core part into a first pore channel of a welded plate part, wherein the valve seat part is provided with a base section and a middle section, the middle section is provided with a peripheral opening, extending the part of the base section into the connecting piece, sealing the base section and the connecting piece by arranging a first sealing piece, and assembling and fixing the valve core part and the connecting piece;

and assembling and fixing the valve core component and the core component.

The base section of the technical scheme of the invention is provided with a bottom opening, the middle section is provided with a peripheral opening, the first end part of the connecting piece is positioned in the first pore channel, the bottom opening of the base section is communicated with the connecting channel, and the peripheral opening is communicated with the first pore channel; the heat exchange device is small in structure, the first end portion of the connecting piece is assembled and fixed with the valve core component, the connecting piece is assembled and fixed with the core component, machining is simple, and influences of connection relations among the connecting piece, the valve core component and the core component caused by height shrinkage of the core component after welding are eliminated.

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 partial cross-sectional view of another embodiment of a heat exchange device with the plate portion structure omitted;

FIG. 5 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 may also have a third flow passage, a fourth flow passage, etc.

The heat exchange device 1 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 is assembled and fixed with the core component. 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.

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.

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 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.

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 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. 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.

The fluid entering the heat exchange device not only can realize throttling depressurization, but also the fluid entering the interplate channels 1212 from the peripheral opening 1113 through the first hole channel can directly exchange heat with the fluid of the interplate channels 1212 adjacent to each other, and throttling and heat exchange can be completed in the core body component 12, so that not only is the phase stability of the fluid facilitated, but also the heat exchange efficiency is improved.

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

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 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 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 1 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. The first end 134 has a stopper groove 136, and the stopper groove 136 is positioned opposite to the second groove 1117. The heat exchange device 1 has a retaining 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 retaining groove 136, and the valve core member 11 and the connecting member 13 are retained and fixed by the retaining ring.

Second end 135 is fixedly disposed with bottom press block 123, second end 135 has a recessed portion 1353, heat exchange device 4 includes second seal 15, recessed portion 1353 is for placement of second seal 15, and second end 135 is sealingly disposed with bottom press block 123.

A method of manufacturing a heat exchange device 1, comprising:

providing a plate part 121, and feeding the stacked plate part 121 into a furnace for welding, wherein the welded plate part 121 is provided with a first pore 1211, a second pore 1213 and an inter-plate channel 1212;

providing a valve core component 11 and a connector 13, extending a valve seat portion 111 of the valve core component 11 into a first duct 1211 of a welded plate part 121, wherein the valve seat portion 111 is provided with a base section 1111 and a middle section 1112, the middle section 1112 is provided with a peripheral opening 1113, a part of the base section 1111 is extended into the connector 13, and the base section 1111 and the connector 13 are sealed by arranging a first sealing member 14;

the fixed spool part 11 and the core part 12 are assembled.

Further, providing a bottom pressing block 123, and feeding the stacked plate part 121 and the bottom pressing block 123 into a furnace for welding; so that the communication hole 1231 of the bottom pressure block 123 corresponds to the first port passage 1211;

assembling and fixing the valve seat portion 111 and the connecting member 13; the assembling and fixing of the valve seat portion 111 and the connecting member 13 may be specifically: the first sealing member 14 is sleeved in the first groove 1116 of the base section 1111, the valve core member 11 with the first sealing member 14 is inserted into the connecting member 13, the second groove 1117 of the base section 1111 corresponds to the limiting groove 136 of the connecting member 13, and a limiting member 16, such as a retaining ring, is placed in the second groove 1117 and the limiting groove 136 to limit and fix the valve seat portion 111 and the connecting member 13;

the assembled connector 13 and the valve element 11 extend into the first duct 1211 from the side of the plate part 121 where the bottom pressing block 123 is not welded, a part of the connector 13 extends into the first duct 1211, a part of the connector 13 extends into the bottom pressing block 123, and the connector 13 and the bottom pressing block 123 are sealed by arranging the second sealing member 15. And finally, assembling and fixing the valve core part 11 and the core part 12 to finish the manufacture of the heat exchange device.

By the manufacturing method, the connecting piece 13 and the core body component 12 can be fixed in an assembling mode, and the assembling mode process of the connecting piece 13 and the valve core component 11 is arranged after the welding of the core body component 12, so that the influence of various uncertain factors of the core body component 12 on the sealing performance of the connecting piece 13 and the core body component 12 in the welding process is reduced, the process flow is simple, and the manufacturing method is simple.

Referring to fig. 4, fig. 4 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 illustrate the structure, some reference numerals of the following structure may not be illustrated in fig. 4, but may refer 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 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.

A method of manufacturing a heat exchange device, comprising:

the fixed spool part 11 and the core part 12 are assembled.

assembling and fixing the valve seat portion 111 and the connecting member 13; the assembling and fixing of the valve seat portion 111 and the connecting member 13 may be specifically: placing a sealing member between the valve seat part 111 and the connecting member 13, inserting part of the base section 1111 into the connecting member 13, wherein the base section 1111 is provided with an external thread part 1119, the inner wall of the connecting member 13 is provided with an internal thread part 1326, connecting the base section 1111 and the connecting member 13 through threads, and realizing the sealing of the base section 1111 and the connecting member 13 through a first sealing member 14 at the end part of the connecting member 13;

Referring to fig. 5, fig. 5 is a schematic cross-sectional view of a structure of the 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 heat exchange device comprises a communication channel 103 and another communication channel 104, the communication channel 103 is communicated with the inner cavity 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 the fluid passes through the connecting channel 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 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 inner cavity 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.

A method of manufacturing a heat exchange device, comprising:

the fixed spool part 11 and the core part 12 are assembled.

Further, providing a bottom pressing block 123, extending a part of the connecting piece 13 into the first duct 1211, placing the flange portion 137 of the connecting piece 13 between the bottom pressing block 123 and the plate portion 121, and sealing the connecting piece 13 and the plate portion 121 by arranging a sealing member;

assembling and fixing the bottom pressing block 123, the connecting piece 13 and the plate part 121;

the valve seat portion 111 of the valve core member 11 is extended into the first duct 1211 of the welded plate portion 121 from the opposite side to the assembled and fixed connector 13, the valve seat portion 111 has a base section 1111 and an intermediate section 1112, the intermediate section 1112 is provided with a peripheral opening 1113, the base section 1111 is extended into the connector 13, and the base section 1111 and the connector 13 are sealingly disposed by providing a first seal member 14.

According to the manufacturing method, the welding mode is not needed between the connecting piece 13 and the core body component 12, the assembling mode process of the connecting piece 13 and the valve core component 11 is arranged after the welding of the core body component 12, the influence of various uncertain factors of the core body component 12 on the sealing performance of the connecting piece 13 and the core body component 12 in the welding process is reduced, the process flow is simple, and the manufacturing method is simple.

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.

Claims

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 valve element component has a valve seat portion having a seat section with a bottom opening and a middle section with a peripheral opening, the valve seat portion having an orifice that can communicate the peripheral opening and the bottom opening; the middle section and the base section are positioned in the first duct, and the peripheral opening is communicated with the first duct;

2. The heat exchange device of claim 1, wherein: 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 inner wall of the first end part are arranged in a sealing mode; the second end is arranged against the core body component in a sealing manner; 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 is provided with a first groove, the first sealing element is positioned in the first groove, and the first sealing element is abutted to the first end part;

when the valve core component is in an open state, the connecting channel, the bottom opening, the throttle hole and the peripheral opening are communicated.

3. The heat exchange device according to claim 1 or 2, wherein: the heat exchange device is provided with a bottom pressing block, and the bottom pressing block is assembled and fixed with the plate piece part;

the connecting piece is provided with a flange part which is fixed with the core body component in a sealing way; the plate portion has a protruding portion, the protruding portion faces away from the valve core component, the protruding portion is arranged opposite to the bottom pressing block, the flange portion is located the plate portion and the position between the bottom pressing blocks, the heat exchange device has a second sealing element, and the second sealing element is located the flange portion and the position between the plate portions.

4. The heat exchange device according to claim 1 or 2, wherein: the base section is provided with a second groove which 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, one part of the limiting piece is located in the second groove, one part of the limiting piece is located in the limiting groove, and the valve core component and the connecting piece are limited and fixed through the limiting piece.

5. The heat exchange device according to claim 1 or 2, wherein: the heat exchange device is provided with a bottom pressing block, and the bottom pressing block and the plate piece part are assembled and fixed or welded and fixed;

the bottom pressing block is provided with a communication hole which is communicated with the first pore passage, the bottom pressing block is provided with a bulge, at least part of the bulge extends into the first pore passage, one part of the connecting piece is positioned on the bottom pressing block,

the heat exchange device is provided with a second sealing piece, the connecting piece is provided with a groove part, the second sealing piece is at least partially positioned in the groove part, and the second sealing piece is abutted against the inner wall of the communication hole formed in the bottom pressure block.

6. The heat exchange device of claim 1, wherein: at least a portion of the base section extends into the first end, the base section having an externally threaded portion, the connector having an internally threaded portion, the base section being in threaded connection with the connector;

the base section is provided with a convex part which is convex relative to the internal thread part in the radial direction of the valve core part;

the first seal is located between the boss and the first end.

7. A method of manufacturing a heat exchange device, comprising:

and assembling and fixing the valve core component and the core component.

8. The method of manufacturing a heat exchange device according to claim 7, comprising:

providing a bottom pressing block, extending a part of the connecting piece into the first pore channel, placing the flange part of the connecting piece between the bottom pressing block and the plate piece part, and sealing the connecting piece and the plate piece part by arranging a second sealing piece;

assembling and fixing the bottom pressing block, the connecting piece and the plate piece part;

the valve seat part of the valve core part extends into a first pore channel of the welded plate part from the opposite side of the assembling and fixing connecting piece, the valve seat part is provided with a base section and a middle section, the middle section is provided with a peripheral opening, the base section extends into the connecting piece, and the base section and the connecting piece are sealed through a sealing piece.

9. The method of manufacturing a heat exchange device according to claim 7, comprising:

providing a bottom pressing block, and feeding the stacked plate piece part and the bottom pressing block into a furnace for welding;

assembling and fixing the valve seat part and the connecting piece;

and extending the assembled connecting piece and the valve core part into the first hole channel from one side of the plate part, which is not welded with the bottom pressing block, extending one part of the connecting piece into the first hole channel, extending one part of the connecting piece into the bottom pressing block, and sealing the connecting piece and the bottom pressing block by arranging a second sealing piece.