Heat exchange device and method for manufacturing a heat exchange device

Abstract

This invention discloses a heat exchange device and a method for manufacturing the heat exchange device, comprising a valve core component, a core component, and a connector. The core component has a plate portion, and the valve core component has a valve seat portion. At least a portion of the valve seat portion is located in a first channel. The valve seat portion has a base section and a middle section. The base section has a bottom opening, and the middle section has a peripheral opening. The middle section is located in the plate portion, and the peripheral opening communicates with the inter-plate channel. At least a portion of the connector extends into the first channel, and its bottom opening communicates with the inner cavity of the connector. The connector is assembled and fixed to the valve core component and the core component. This heat exchange device is simple to manufacture.

Description

Technical Field

[0001] This invention relates to the field of thermal management, and more particularly to a heat exchange device and a method for manufacturing the heat exchange device. Background Technology

[0002] A thermal management system includes a refrigerant loop. The thermal management system requires two components: a heat exchanger and an expansion valve. These two components are usually connected by piping.

[0003] The components of the heat exchanger are fixed by welding. During the welding process, the heat exchanger may shrink significantly after welding due to the melting of the solder. Therefore, in the integration of a heat exchanger and an expansion valve, the valve body of the expansion valve is fixed to the mounting plate of the heat exchanger. Summary of the Invention

[0004] The purpose of this invention is to provide a heat exchange device with a compact structure and simple manufacturing process, as well as a method for manufacturing the heat exchange device.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] A heat exchange device includes a valve core component and a core component, wherein the valve core component and the core component are fixedly disposed together;

[0007] The core component has a plate portion, and the plate portion has at least a first channel, a second channel, and an inter-plate channel, wherein the first channel, the inter-plate channel, and the second channel are connected.

[0008] The valve core component has a valve seat portion, which has a base section and a middle section. The base section has a bottom opening, and the middle section has a peripheral opening. The valve seat portion has a throttling orifice that connects the peripheral opening and the bottom opening. The middle section and the base section extend into the first channel, and the peripheral opening communicates with the first channel.

[0009] The heat exchange device includes a connector having a connection channel and a first end located at the first channel. The bottom opening of the base section communicates with the connection channel, and the connection channel is not directly connected to the portion of the first channel between the outer wall of the connector and the plate portion.

[0010] The heat exchange device has a first seal, the first end of the connector is assembled and fixed to the valve core component, the first seal is located between the first end of the connector and the valve core component, and the connector is assembled and fixed to the core component.

[0011] To achieve the above objectives, the following technical solution is also adopted: a method for manufacturing a heat exchange device, comprising:

[0012] Provide plate sections, and put the stacked plate sections into the furnace for welding. The welded plate sections have a first channel, a second channel, and an inter-plate channel.

[0013] A valve core component and a connector are provided. A portion of the valve seat of the valve core component is inserted into the first channel of the welded plate portion. The valve seat has a base section and a middle section. The middle section has a peripheral opening. A portion of the base section is inserted into the connector. The base section and the connector are sealed by a first sealing element. The valve core component and the connector are assembled and fixed.

[0014] Assemble and fix the valve core component and the core component.

[0015] The base section of the above-mentioned technical solution of the present invention has a bottom opening, the middle section has a peripheral opening, the first end of the connector is located in the first channel, the bottom opening of the base section is connected to the connecting channel, and the peripheral opening is connected to the first channel; the heat exchange device has a compact structure, and the first end of the connector is assembled and fixed with the valve core component, and the connector is assembled and fixed with the core component, which is simple to process and eliminates the influence of the high shrinkage of the core component after welding on the connection relationship between the connector, the valve core component and the core component. Attached Figure Description

[0016] Figure 1 A schematic diagram of one embodiment of a heat exchange device;

[0017] Figure 2 for Figure 1 A cross-sectional schematic diagram;

[0018] Figure 3 for Figure 1 A three-dimensional exploded view;

[0019] Figure 4 This is a partial cross-sectional schematic diagram of another embodiment of the heat exchange device, in which the plate section structure is omitted;

[0020] Figure 5 This is a cross-sectional schematic diagram of another embodiment of the heat exchange device. Detailed Implementation

[0021] Reference Figures 1-3 , Figure 1 A three-dimensional structural schematic diagram of the first heat exchange device 1 of the present invention is shown.

[0022] The heat exchange device 1 includes at least a first flow channel 101 and a second flow channel. The fluid in the first flow channel 101 can exchange heat with the fluid in the second flow channel. The fluid in the first flow channel 101 can be a refrigerant, and the fluid in the second flow channel can be a coolant. The heat exchange device may also have a third flow channel, a fourth flow channel, etc.

[0023] The heat exchange device 1 includes a valve core component 11, a core component 12, and a connector 13. The valve core component 11 and the core component 12 are assembled and fixed together, and the connector is assembled and fixed to the core component. The valve core component 11 can be, for example, the valve core structure of an expansion valve.

[0024] The core component 12 has a top pressing block 122, a plate portion 121, and a bottom pressing block 123, which are welded together. The core component 12 has at least a first channel 1211, a second channel 1213, and an inter-plate channel 1212, which are connected. The first channel 1211, the inter-plate channel 1212, and the second channel 1213 are connected. The first flow channel 101 includes a portion of the first channel 1211, the second channel 1213, and the inter-plate channel 1212.

[0025] In this document, the first channel 1211 and the second channel 1213 refer to the channels of the core component 12 when the valve core component 11 is not assembled. After the valve core component or connector is assembled in the first channel 1211 and the second channel 1213, even if there is a component or part located in other components, as long as the location of the component is the first channel or the second channel of the core component, this document still assumes that the component or part is located in the first channel or the second channel.

[0026] At least a portion of the valve core component 11 extends into the first channel 1211, and at least a portion of the connector 13 extends into the first channel 1211.

[0027] The core component 12 has multiple stacked plates, with adjacent plates welded together. Each plate has at least a first hole and a second hole. Along the stacking direction of the plates, the first holes and second holes of each plate are aligned. The first and second holes are located near the edges of the plates, allowing the fluid flowing through the plates to have a longer flow path, which helps to improve heat exchange efficiency. The aligned first holes of each plate form a portion of a first channel 1211, and the aligned second holes of each plate form a portion of a second channel 1213.

[0028] The top pressure block 122 has a third hole 1221, which is aligned with the first hole. The bottom pressure block 123 has a connecting hole 1231, which is aligned with the first hole.

[0029] The heat exchange device 1 includes a connecting channel 103 and another connecting channel 104. The connecting channel 103 is connected to the connecting channel 138 of the connector 13, and the other connecting channel 104 can be connected to the second channel 1213. In this way, fluid can enter from the connecting channel 103, pass through the connecting channel of the connector 13, be throttled and regulated by the valve core component 11, enter the first channel, and then enter the interplate channel 1212 and the second flow channel of the core component 12 for fluid heat exchange. The flow path is simple and the heat exchange efficiency is high. Of course, in other cases, the other connecting channel 104 may not be directly connected to the second channel 1213. For example, a pipe can be installed in the second channel 1213 and connected to the other connecting channel 104 through the pipe. In other cases, the other connecting channel 104 may not be connected to the inter-plate channel 1212 through the second channel 1213. The other connecting channel 104 may also be located on the side of the core component 12 where the connecting channel 103 is located. The other connecting channel 104 may be adjacent to the connecting channel 103 and may not be directly connected to the connecting channel 103.

[0030] The core component 12 has a first side 124 and a second side 126, at least a portion of the valve core component 11 is located on the first side 124, and a connecting channel 138 is located on the second side 126, the connecting channel communicating with the connection channel. For example, the valve core component 11 includes a coil portion 1120, the coil portion 1120 being located on the first side 124.

[0031] The valve core component 11 has a valve seat portion 111, at least a portion of which is located in a first channel 1211. The valve seat portion 111 has a peripheral opening 1113, a throttling orifice 1114, and a bottom opening 1115. The peripheral opening 1113 communicates with the first channel 1211 and with the inter-plate channel 1212. The connector 13 has a connecting channel 138, one end of which is located in the first channel 1211. The bottom opening 1115 communicates with the connecting channel 138 of the connector 13. The connecting channel 138 is not directly connected to the first channel 1211. The valve core component 11 can be the valve core portion of an electronic expansion valve. Thus, fluid can enter the inter-plate channel 1212 from the connecting channel 138 of the connector 13 via the bottom opening 1115, the throttling orifice 1114, the peripheral opening 1113, and the first channel 1211, allowing the fluid to exchange heat with the fluid between adjacent plates inside the plate portion 121. The peripheral opening 1113 can be directly connected to the first channel 1211 or directly connected to the inter-plate channel 1212.

[0032] In this article, the fact that the connecting channel is not directly connected to the first channel does not preclude the possibility that the two are connected through a flow channel set by other components.

[0033] The valve seat portion 111 has a base section 1111 and a middle section 1112. The base section 1111 has a bottom opening 1115, and the middle section 1112 has a peripheral opening 1113. In the stacking direction of the core component 12, the middle section 1112 is closer to the first side 124 of the core component 12 relative to the base section 1111. The middle section 1112 is located in the first channel 1211. Thus, the valve core component 11 is assembled to a greater depth into the core component 12, which helps to reduce the height of the valve core component 11 protruding from the core component 12, and contributes to a more compact overall structure. When the valve core component is in the open state, the communicating channel, connecting channel, bottom opening, throttling orifice, peripheral opening, first channel, inter-plate channel, and second channel are connected.

[0034] After the fluid enters the heat exchange device, it can not only achieve throttling and pressure reduction, but also the fluid entering the inter-plate channel 1212 through the first channel from the peripheral opening 1113 can directly exchange heat with the fluid in the adjacent inter-plate channel 1212. Throttling and heat exchange can be completed inside the core component 12, which is not only conducive to the phase stability of the fluid, but also conducive to improving the heat exchange efficiency.

[0035] It should be noted that the terms "base section" and "middle section" in this article are used only for name differentiation and are not used for structural limitation.

[0036] With the core component 12 positioned on the side of the valve core component 11 as its upper part, the middle section 1112 is located above the connector 13. Fluid enters through the bottom opening 1115, passes through the throttling orifice 1114, and exits through the peripheral opening 1113. This allows the fluid entering the core component 12 to be throttled and depressurized by the expansion valve before exiting through the peripheral opening 1113 and entering the interplate channel 1212 to exchange heat with the fluid in the second flow channel. The throttling and depressurization of the refrigerant is completed inside the core component 12, ensuring a smooth connection with subsequent heat exchange processes. This reduces the impact of factors such as gas-liquid stratification of the refrigerant after throttling and depressurization in long pipelines on the heat exchange efficiency of subsequent heat exchange.

[0037] The connector 13 has an annular wall portion 131, and the valve seat portion 111 is sealed to the annular wall portion 131. The sealing form can be, for example, radial sealing or axial sealing.

[0038] The connector 13 has a first end 134 and a second end 135. The first end 134 is configured to cooperate with the base section 1111. The first end of the connector is located in the first channel. The base section 1111 has a first groove 1116. The heat exchange device 1 has a first sealing element 14. The first sealing element is located between the first end of the connector and the valve core component. The first sealing element 14 is located in the first groove 1116. The first sealing element 14 and the annular wall portion 131 of the connector 13 are tightly fitted to achieve a seal between the two, thereby effectively preventing leakage between the base section 1111 and the connector 13.

[0039] The base section 1111 has a second groove 1117, which is closer to the peripheral opening 1113 than the first groove 1116. The first end portion 134 has a limiting groove 136, which is positioned opposite to the second groove 1117. The heat exchange device 1 has a limiting member 16, such as a retaining ring, with a portion of the retaining ring located in the second groove 1117 and a portion of the retaining ring located in the limiting groove 136. The valve core component 11 and the connecting member 13 are fixed together by the retaining ring.

[0040] The second end 135 is fixedly disposed with the bottom pressure block 123. The second end 135 has a groove portion 1353. The heat exchange device 4 includes a second seal 15. The groove portion 1353 is used to place the second seal 15. The second end 135 is sealed with the bottom pressure block 123.

[0041] A method for manufacturing heat exchange device 1 includes:

[0042] A plate section 121 is provided, and the stacked plate sections 121 are put into the furnace for welding. The welded plate section 121 has a first channel 1211, a second channel 1213, and an inter-plate channel 1212.

[0043] A valve core component 11 and a connector 13 are provided. The valve seat portion 111 of the valve core component 11 extends into the first channel 1211 of the welded plate portion 121. The valve seat portion 111 has a base section 1111 and a middle section 1112. The middle section 1112 is provided with a peripheral opening 1113. A portion of the base section 1111 extends into the connector 13, and the base section 1111 and the connector 13 are sealed by providing a first sealing member 14.

[0044] Assemble and fix the valve core component 11 and the core component 12.

[0045] Furthermore, a bottom pressure block 123 is provided, and the stacked plate portion 121 and the bottom pressure block 123 are welded in the furnace; so that the connecting hole 1231 of the bottom pressure block 123 corresponds to the first channel 1211;

[0046] Assemble and fix the valve seat 111 and the connector 13. Specifically, the assembly and fixing of the valve seat 111 and the connector 13 can be as follows: insert the first sealing member 14 into the first groove 1116 of the base section 1111, insert the valve core component 11 with the first sealing member 14 into the connector 13, align the second groove 1117 of the base section 1111 with the limiting groove 136 of the connector 13, and place the limiting member 16, such as a retaining ring, into the second groove 1117 and the limiting groove 136 to limit and fix the valve seat 111 and the connector 13.

[0047] The assembled connector 13 and valve core component 11 are inserted into the first channel 1211 from the side of the plate portion 121 where the bottom pressure block 123 is not welded. A portion of the connector 13 is inserted into the first channel 1211, and another portion of the connector 13 is inserted into the bottom pressure block 123. A second sealing element 15 is then used to seal the connection between the connector 13 and the bottom pressure block 123. Finally, the valve core component 11 is assembled and fixed to the core component 12, completing the manufacturing of the heat exchange device.

[0048] With this manufacturing method, since the connector 13 and the core component 12 can be fixed by assembly, and the assembly process of the connector 13 and the valve core component 11 is arranged after the welding of the core component 12, the influence of various uncertainties in the welding process of the core component 12 on the sealing performance of the connector 13 and the core component 12 is reduced. The process is simple and the manufacturing method is simple.

[0049] Reference Figure 4 , Figure 4 The diagram illustrates the fit between the valve core component 11, the connector 13, and the bottom pressure block 123, omitting the plate structure of the core component 12. For clarity, some reference numerals may not be explicitly shown in the following diagrams. Figure 4 The diagram is shown in the image, but it can be used as a reference. Figure 2 .

[0050] The valve seat portion 111 has a middle section 1112 and a base section 1111. The base section 1111 has a bottom opening 1115, and the middle section 1112 has a peripheral opening 1113. In the stacking direction of the core component 12, the middle section 1112 is closer to the first side portion 124 of the core component 12 relative to the base section 1111. The middle section 1112 is located in the first channel 1211. Thus, the valve core component 11 is assembled to a greater depth into the core component 12, which helps to reduce the height of the valve core component 11 protruding from the core component 12, and contributes to a more compact overall structure.

[0051] With the core component 12 positioned on the side of the valve core component 11 as its upper part, the middle section 1112 is located above the connector 13. Fluid enters through the bottom opening 1115, passes through the throttling orifice 1114, and exits through the peripheral opening 1113. This allows the fluid entering the core component 12 to be throttled and depressurized by the expansion valve before exiting through the peripheral opening 1113 and entering the interplate channel 1212 to exchange heat with the fluid in the second flow channel. The throttling and depressurization of the refrigerant is completed inside the core component 12, ensuring a smooth connection with subsequent heat exchange processes. This reduces the impact of factors such as gas-liquid stratification of the refrigerant after throttling and depressurization in long pipelines on the heat exchange efficiency of subsequent heat exchange.

[0052] The connector 13 has a first end 134 and a second end 135. At least a portion of the base segment 1111 extends into the first end 134. The base segment 1111 has an external thread 1119. The connector 13 has an internal thread 1326. The base segment 1111 is threadedly connected to the connector 13.

[0053] The base section 1111 has a protrusion 1118 that protrudes relative to the internal thread portion 1326 in the radial direction of the valve core component 11.

[0054] The heat exchange device has a first seal 14 located between the protrusion 1118 and the first end portion 134.

[0055] Furthermore, the connector 13 has a valve seat mating portion 132 and a drain 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 mated with the valve core component 11. The first section 1324 of the valve seat mating portion 132 has an internal thread 1326, and the base section 1111 has an external thread 1119. The valve core component 11 is threadedly connected to the valve seat mating portion 132. The base section 1111 has a protrusion 1118, which protrudes relative to the internal thread 1326 in the radial direction of the valve core component 11. The first sealing member 14 is located between the protrusion 1118 and the valve seat mating portion 132.

[0056] The second section 1325 of the valve seat mating part 132 is fitted with the drain pipe 133. The drain pipe 133 extends into the second section 1325 of the valve seat mating part 132, and the outer wall of the drain pipe 133 is welded and fixed to the inner wall of the second section 1325 of the valve seat mating part 132. The welding of the drain pipe 133 and the valve seat mating part 132 is, for example, by setting a welding piece.

[0057] The valve seat mating part 132 has a limiting protrusion 1327, and the end of the drain tube 133 is disposed opposite to the limiting protrusion 1327. The limiting protrusion 1327 can be used to limit the depth of the drain tube 133 extending into the valve seat mating part 132. When shrinkage occurs during the welding process of the core component 12, it ensures that the depth of the drain tube 133 does not exceed the limiting protrusion 1327, which is beneficial to the sealing fit and flow channel connection between the base section 1111 and the valve seat mating part 132.

[0058] Alternatively, the second section 1325 of the drain tube 133 and the valve seat mating part 132 can be fixed in position by a threaded connection.

[0059] A method for manufacturing a heat exchange device, comprising:

[0060] A plate section 121 is provided, and the stacked plate sections 121 are put into the furnace for welding. The welded plate section 121 has a first channel 1211, a second channel 1213, and an inter-plate channel 1212.

[0061] A valve core component 11 and a connector 13 are provided. The valve seat portion 111 of the valve core component 11 extends into the first channel 1211 of the welded plate portion 121. The valve seat portion 111 has a base section 1111 and a middle section 1112. The middle section 1112 is provided with a peripheral opening 1113. A portion of the base section 1111 extends into the connector 13, and the base section 1111 and the connector 13 are sealed by providing a first sealing member 14.

[0062] Assemble and fix the valve core component 11 and the core component 12.

[0063] Furthermore, a bottom pressure block 123 is provided, and the stacked plate portion 121 and the bottom pressure block 123 are welded in the furnace; so that the connecting hole 1231 of the bottom pressure block 123 corresponds to the first channel 1211;

[0064] Assemble and fix the valve seat 111 and the connector 13; the assembly and fixing of the valve seat 111 and the connector 13 can be specifically as follows: place the sealing element between the valve seat 111 and the connector 13, insert part of the base section 1111 into the connector 13, the base section 1111 is provided with an external thread 1119, the inner wall of the connector 13 is provided with an internal thread 1326, connect the base section 1111 and the connector 13 by threads, and achieve sealing between the two by the first sealing element 14 at the end of the connector 13;

[0065] The assembled connector 13 and valve core component 11 are inserted into the first channel 1211 from the side of the plate portion 121 where the bottom pressure block 123 is not welded. A portion of the connector 13 is inserted into the first channel 1211, and another portion of the connector 13 is inserted into the bottom pressure block 123. A second sealing element 15 is then used to seal the connection between the connector 13 and the bottom pressure block 123. Finally, the valve core component 11 is assembled and fixed to the core component 12, completing the manufacturing of the heat exchange device.

[0066] With this manufacturing method, since the connector 13 and the core component 12 can be fixed by assembly, and the assembly process of the connector 13 and the valve core component 11 is arranged after the welding of the core component 12, the influence of various uncertainties in the welding process of the core component 12 on the sealing performance of the connector 13 and the core component 12 is reduced. The process is simple and the manufacturing method is simple.

[0067] Reference Figure 5 , Figure 5 This diagram illustrates a cross-sectional view of a heat exchange device.

[0068] The heat exchange device includes at least a first flow channel 101 and a second flow channel. The fluid in the first flow channel 101 can exchange heat with the fluid in the second flow channel. The fluid in the first flow channel 101 can be a refrigerant, and the fluid in the second flow channel can be a coolant. The heat exchange device may also have a third flow channel, a fourth flow channel, etc.

[0069] The heat exchange device includes a valve core component 11, a core component 12, and a connector 13. The valve core component 11 and the core component 12 are assembled and fixed, and the connector 13 is fixedly disposed with the core component 12. The valve core component 11 can be, for example, the valve core structure of an expansion valve.

[0070] The core component 12 has a top pressing block 122, a plate portion 121, and a bottom pressing block 123. The top pressing block 122 and the plate portion are welded and fixed, and the bottom pressing block 123 is assembled and fixed to the plate portion 121. The plate portion 121 has at least a first channel 1211, a second channel 1213, and an inter-plate channel 1212. The first channel 1211, the inter-plate channel 1212, and the second channel 1213 are connected. The first flow channel 101 includes a portion of the first channel 1211, the second channel 1213, and the inter-plate channel 1212. The first channel 1211 and the second channel 1213 are the channels when the core component 12 is not equipped with the valve core component 11.

[0071] The plate section 121 has a plurality of stacked plates, adjacent plates are welded together, and each plate has at least a first hole and a second hole. Along the stacking direction of the plates, the first holes of each plate are aligned, and the second holes of each plate are aligned. The first holes and second holes are located near the edges of the plates, so that the fluid flowing through the plates can have a longer flow path, which helps to improve heat exchange efficiency. The aligned first holes of each plate form a part of a first channel 1211, and the aligned second holes of each plate form a part of a second channel 1213.

[0072] The top pressure block 122 has a third hole 1221, which is aligned with the first hole. The bottom pressure block 123 has a connecting hole 1231, which is aligned with the first hole.

[0073] The heat exchange device includes a connecting channel 103 and another connecting channel 104. The connecting channel 103 communicates with the inner cavity of the connector 13, and the other connecting channel 104 can communicate with the second channel 1213. In this way, fluid can enter through the connecting channel 103, pass through the connecting channel of the connector 13, and after being throttled and regulated by the valve core component 11, enter the inter-plate channel 1212 and the second flow channel of the core component 12 for fluid heat exchange. The flow path is simple and the heat exchange efficiency is high. Of course, in other cases, the other connecting channel 104 may not be directly connected to the second channel 1213. For example, a pipe can be installed inside the second channel 1213, and the pipe can communicate with the other connecting channel 104. In other cases, the other connecting channel 104 may not communicate with the inter-plate channel 1212 through the second channel 1213. The other connecting channel 104 may also be located on the side of the core component 12 where the connecting channel 103 is located, adjacent to the connecting channel 103 but not directly connected to it.

[0074] At least a portion of the valve core component 11 extends into the first channel 1211, and at least a portion of the connector 13 extends into the first channel 1211.

[0075] The valve core component 11 has a valve seat portion 111, at least a portion of which is located in a first channel 1211. The valve seat portion 111 has a peripheral opening 1113, a throttling orifice 1114, and a bottom opening 1115. The peripheral opening 1113 communicates with the first channel 1211, and the bottom opening 1115 communicates with the inner cavity of the connector 13. The valve core component 11 may be the valve core portion of an electronic expansion valve.

[0076] The valve seat portion 111 has a base section 1111 and a middle section 1112. The base section 1111 has a bottom opening 1115 and is located inside the connector 13. The periphery of the base section 1111 is sealed to the annular wall portion 131 of the connector 13. The middle section 1112 has a peripheral opening 1113. In the stacking direction of the core component 12, the middle section 1112 is located on the first side portion 124 of the core component 12 relative to the base section 1111. The middle section 1112 is located on the plate portion 121, and the peripheral opening 1113 communicates with the inter-plate channel 1212. In this way, the valve core component 11 is assembled to a greater depth into the core component 12, which helps to reduce the height of the valve core component 11 protruding from the core component 12, and contributes to a more compact overall structure.

[0077] The connector 13 has an annular wall portion 131, and the valve seat portion 111 is sealed to the annular wall portion 131. In the plate stacking direction of the core component 12, the height of the annular wall portion 131 is greater than the height of the base section 1111. The base section 1111 is provided with a first groove 1116, and the heat exchange device has a first seal 14 located in the first groove 1116. The first seal 14 and the annular wall portion 131 are tightly fitted to achieve a seal between them, thus effectively preventing leakage between the base section 1111 and the annular wall portion 131.

[0078] With the core component 12 positioned on the side of the valve core component 11 as its upper part, the middle section 1112 is located above the connector 13. Fluid enters through the bottom opening 1115, passes through the throttling orifice 1114, and exits through the peripheral opening 1113. This allows the fluid entering the core component 12 to be throttled and depressurized by the expansion valve before exiting through the peripheral opening 1113, enabling it to enter the interplate channel 1212 and exchange heat with the fluid in the second flow channel. The throttling and depressurization of the refrigerant is completed inside the core component 12, ensuring a smooth connection with subsequent heat exchange processes. This reduces the impact of factors such as gas-liquid stratification of the refrigerant after throttling and depressurization in long pipelines on the heat exchange efficiency of subsequent heat exchange.

[0079] The connector 13 has a first end 134 and a second end 135. The first end 134 is configured to mate with the valve seat portion 111, and the second end 135 is configured to mate with the bottom pressure block 123. The connector 13 has an annular wall portion 131, and a base section 1111 extends into the connector 13, and the base section 1111 is sealed to the annular wall portion 131. The heat exchange device has a bottom pressure block 123, which is assembled and fixed to the plate portion 121, for example, by a threaded connection.

[0080] The connector 13 has a flange 137, which is sealed and fixed to the core component 12. The plate portion 121 has a protrusion 1220, which protrudes away from the valve core component 11 and is disposed opposite to the bottom pressure block 123. The flange 137 is located between the plate portion 121 and the bottom pressure block 123. Of course, the location of the flange 137 between the plate portion 121 and the bottom pressure block 123 does not mean that the flange 137 must necessarily be in contact with the plate portion 121 and the bottom pressure block 123. This only indicates that the flange 137 is located between a part of the structure of the plate portion 121 and a part of the structure of the bottom pressure block 123.

[0081] The flange portion 137 is positioned between the plate portion 121 and the bottom pressure block 123. It can be used to determine the position of the connector 13 in the core component 12, stabilize the sealing fit between the connector 13 and the base section 1111, and facilitate the assembly of the connector 13 and the valve core component 11.

[0082] The heat exchange device has a second seal 15, for example in the form of a gasket, located between the flange portion 137 and the plate portion 121, for sealing the first channel 1211. The bottom pressure block 123 has a threaded hole 1233, and the bottom pressure block 123 and the plate portion 121 can be fixed together by screws inserted into the threaded hole, thereby tightening the seal between the flange portion 137 and the plate portion 121. Alternatively, a third seal can be provided between the flange portion 137 and the bottom pressure block 123 in the heat exchange device. In this way, the seal between the connector 13 and the core component 12 is achieved through axial sealing, which is beneficial for stabilizing the sealing performance of the heat exchange device and simplifies manufacturing.

[0083] Since the connector 13 has two sealing points, the seal between the connector 13 and the valve seat 111 is achieved by placing the seal in the groove of the base section 1111, so that the base section 1111 and the inner wall of the connector 13 are sealed radially. At this time, there is a certain roughness requirement for the inner wall of the connector 13, and the inner wall of the connector 13 needs to be additionally processed to ensure the fit required for sealing.

[0084] At another sealing point of the connector 13, the flange 137 is pressed by the bottom pressure block 123, so that the flange 137 and the plate 121 are axially sealed. Since a sealing element is provided between the flange 137 and the plate 121, the two are sealed by axial sealing. At this time, the surface roughness requirement of the mating part of the flange 137 and the plate 121 is lower than that required for radial sealing. Therefore, the focus of the machining of the connector 13 is mainly on the fit between the inner wall of the connector 13 and the base section 1111. There are fewer machining considerations, and the machining is simple and easy to implement.

[0085] A method for manufacturing a heat exchange device, comprising:

[0086] A plate section 121 is provided, and the stacked plate sections 121 are put into the furnace for welding. The welded plate section 121 has a first channel 1211, a second channel 1213, and an inter-plate channel 1212.

[0087] A valve core component 11 and a connector 13 are provided. The valve seat portion 111 of the valve core component 11 extends into the first channel 1211 of the welded plate portion 121. The valve seat portion 111 has a base section 1111 and a middle section 1112. The middle section 1112 is provided with a peripheral opening 1113. A portion of the base section 1111 extends into the connector 13, and the base section 1111 and the connector 13 are sealed by providing a first sealing member 14.

[0088] Assemble and fix the valve core component 11 and the core component 12.

[0089] Furthermore, a bottom pressure block 123 is provided, a portion of the connector 13 is inserted into the first channel 1211, the flange portion 137 of the connector 13 is placed between the bottom pressure block 123 and the plate portion 121, and the connector 13 and the plate portion 121 are sealed by providing a sealing element.

[0090] Assemble and fix the bottom pressure block 123, the connector 13 and the plate part 121;

[0091] The valve seat portion 111 of the valve core component 11 extends from the opposite side of the assembly fixing connector 13 into the first channel 1211 of the welded plate portion 121. The valve seat portion 111 has a base section 1111 and a middle section 1112. The middle section 1112 is provided with a peripheral opening 1113. The base section 1111 extends into the connector 13, and the base section 1111 and the connector 13 are sealed by providing a first sealing member 14.

[0092] With this manufacturing method, since there is no need to weld between the connector 13 and the core component 12, and the assembly process of the connector 13 and the valve core component 11 is arranged after the welding of the core component 12, the influence of various uncertainties in the welding process of the core component 12 on the sealing performance of the connector 13 and the core component 12 is reduced. The process is simple and the manufacturing method is simple.

[0093] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. For example, the directional definitions such as "front", "back", "left", "right", "up", and "down" are used. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still combine, modify or substitute the present invention with each other. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A heat exchange device, comprising a valve core component and a core component, wherein the valve core component and the core component are fixedly disposed thereon; characterized in that: The core component has a plate portion, and the plate portion has at least a first channel, a second channel, and an inter-plate channel, wherein the first channel, the inter-plate channel, and the second channel are connected. The valve core component has a valve seat portion, which has a base section and a middle section. The base section has a bottom opening, and the middle section has a peripheral opening. The valve seat portion has a throttling orifice that connects the peripheral opening and the bottom opening. The middle section and the base section are located in the first channel, and the peripheral opening communicates with the first channel. The heat exchange device includes a connector having a connection channel and a first end located at the first channel. The bottom opening of the base section communicates with the connection channel, and the connection channel is not directly connected to a portion of the first channel between the outer wall of the connector and the plate portion. The heat exchange device has a first seal, the first end of the connector is assembled and fixed to the valve core component, the first seal is located between the first end of the connector and the valve core component, and the connector is assembled and fixed to the core component.

2. The heat exchange device according to claim 1, characterized in that: The connector has a second end, the base section extends into the first end, and the base section is sealed to the inner wall of the first end; the second end is sealed to the core component; with the side of the core component where the valve core component is located as the upper side, the middle section is located above the connector; The base segment has a first groove, the first seal is located in the first groove, and the first seal is abutted against the first end; When the valve core component is in the open state, the connecting channel, bottom opening, throttling orifice, and peripheral opening are connected.

3. The heat exchange device according to claim 1 or 2, characterized in that: The heat exchange device has a bottom pressure block, which is assembled and fixed to the plate portion; The connector has a flange portion that is sealed and fixed to the core component; the plate portion has a protrusion portion that protrudes away from the valve core component and is disposed opposite to the bottom pressure block; the flange portion is located between the plate portion and the bottom pressure block; the heat exchange device has a second sealing element that is located between the flange portion and the plate portion.

4. The heat exchange device according to claim 2, characterized in that: The base segment has a second groove, which is closer to the peripheral opening than the first groove. The connector has a limiting groove, which is positioned opposite to the second groove. The heat exchange device has a limiting member, a portion of which is located in the second groove, and a portion of which is located in the limiting groove. The valve core component and the connecting member are limited and fixed by the limiting member.

5. The heat exchange device according to claim 1 or 2, characterized in that: The heat exchange device has a bottom pressure block, which is assembled or welded to the plate portion; The bottom pressure block has a connecting hole that communicates with the first channel. The bottom pressure block has a protrusion, at least a portion of which extends into the first channel. A portion of the connector is located on the bottom pressure block. The heat exchange device has a second seal, the connector has a groove portion, the second seal is at least partially located in the groove portion, and the second seal abuts against the inner wall of the bottom pressure block where the connecting hole is located.

6. The heat exchange device according to claim 1, characterized in that: At least a portion of the base segment extends into the first end, the base segment has an external thread, the connector has an internal thread, and the base segment is threadedly connected to the connector. The base section has a protrusion that protrudes relative to the internal thread portion in the radial direction of the valve core component; The first seal is located between the protrusion and the first end.

7. A method for manufacturing a heat exchange device, comprising: A plate section is provided, and the stacked plate sections are welded in a furnace. The welded plate section has a first channel, a second channel, and an inter-plate channel, which connect the first channel, the inter-plate channel, and the second channel. A valve core component and a connector are provided. A portion of the valve seat of the valve core component extends into a first channel of a welded plate. A portion of the connector extends into the first channel. The valve seat has a base section and a middle section. The base section has a bottom opening, and the middle section has a peripheral opening. The valve seat has a throttling orifice that connects the peripheral opening and the bottom opening. The peripheral opening communicates with the first channel. A portion of the base section extends into the connector, so that the bottom opening of the base section communicates with the connecting channel of the connector. The base section and the connector are sealed by a first sealing element. The valve core component and the connector are assembled and fixed. Assemble and fix the valve core component and the core component.

8. A method for manufacturing a heat exchange device according to claim 7, comprising: A bottom pressure block is provided, and the flange of the connector is placed between the bottom pressure block and the plate portion. The connector and the plate portion are sealed by providing a second sealing element. Assemble and fix the bottom pressure block, connectors, and plate section; The valve seat portion of the valve core component extends from the opposite side of the assembled fixed connector into the first channel of the welded plate portion. The valve seat portion has a base section and a middle section. The middle section has a peripheral opening. The base section extends into the connector, and a sealing element is provided between the base section and the connector.

9. A method for manufacturing a heat exchange device according to claim 7, comprising: Provide a bottom pressure block, and then weld the stacked plate sections and the bottom pressure block into the furnace; Assemble and fix the valve seat and connecting parts; The assembled connector and valve core assembly are inserted into the first channel from the side of the plate section where the bottom pressure block is not welded. A part of the connector is inserted into the first channel and a part of the connector is inserted into the bottom pressure block. The connector and the bottom pressure block are sealed by setting a second seal.

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