Heat exchange device

Abstract

The present invention discloses a heat exchange device, including a throttling unit and a heat exchange unit, the heat exchange unit having a first fluid channel and a second fluid channel, the first fluid channel including a first hole, a second hole and a third hole, the heat exchange core also having a blocking portion, the throttling unit including a valve body and a valve core assembly, the valve body having an accommodating cavity, a first interface, a second interface, a first channel and a second channel, the throttling unit having a connector, the connector having a first accommodating portion and a first connecting channel, the valve core assembly including a valve seat, the valve seat having a valve port; at least a portion of the valve seat is located in the first accommodating portion, a portion of the connector is located in the first hole and passes through the blocking portion, the first connecting channel is connected to the second hole; the throttling unit has a first valve cavity and a second valve cavity, the second channel is connected to the first valve cavity, the second valve cavity is connected to the first channel and the first hole, the valve port can connect the first valve cavity and the first connecting channel, so that the structure of the heat exchange device is relatively compact.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management, and in particular to a heat exchange device. Background Art

[0002] A thermal management system includes a heat exchanger and an expansion valve. The heat exchanger and the expansion valve are integrated, and the outlet in the valve body of the expansion valve is directly connected to the refrigerant inlet of the heat exchanger. The refrigerant outlet of the heat exchanger is connected to other components in the thermal management system through a pipeline. Although this solution can make the overall structure compact, because the refrigerant outlet of the heat exchanger and the inlet of the expansion valve are on different sides of the heat exchanger, not only is the installation more complicated, but it also occupies a large space. Summary of the Invention

[0003] The purpose of this application is to provide a heat exchange device that is conducive to the miniaturization of the heat exchange device structure.

[0004] A heat exchange device, comprising a throttling unit and a heat exchange unit, wherein the heat exchange unit comprises a plate body and a heat exchange core, wherein the heat exchange unit has a first fluid channel and a second fluid channel isolated from each other, wherein the first fluid channel comprises a first hole channel, a second hole channel, and a third hole channel, wherein the heat exchange core further comprises a blocking portion, wherein the first hole channel and the second hole channel are located on the same side of the heat exchange unit, and the blocking portion is located between the first hole channel and the second hole channel.

[0005] The throttling unit includes a valve body and a valve core assembly, the valve body is fixed to the plate body, the valve body has an accommodating cavity, a first interface, a second interface, a first channel, and a second channel, wherein the first interface is communicated with the first channel, and the second interface is communicated with the second channel, the throttling unit has a connecting body, the connecting body has a first accommodating portion and a first connecting channel, the valve core assembly includes a valve seat, and the valve seat has a valve port;

[0006] A portion of the valve core assembly is located in the accommodating cavity, and at least a portion of the valve seat is located in the first accommodating portion. A portion of the connector is located in the first channel and passes through the blocking portion. The first connecting channel is in communication with the second channel.

[0007] The throttling unit has a first valve cavity and a second valve cavity, the second channel is connected to the first valve cavity, the second valve cavity is connected to the first channel and the first hole, and the valve port can connect the first valve cavity and the first connecting channel.

[0008] The throttling unit of the provided heat exchange device has a connecting body, and the throttling unit also has a first valve chamber and a second valve chamber. The second channel is connected to the first valve chamber, the valve port can connect the first valve chamber and the first connecting channel, and the second valve chamber connects the first channel and the first channel, so that the structure of the heat exchange device is relatively compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a cross-sectional schematic diagram of an embodiment of a heat exchange device;

[0010] Figure 2 yes Figure 1 Schematic diagram of a local enlarged structure;

[0011] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle connector;

[0012] Figure 4 is a cross-sectional schematic diagram of another embodiment of a heat exchange device;

[0013] Figure 5 is a cross-sectional schematic diagram of a throttling unit in another embodiment of a heat exchange device;

[0014] Figure 6 is a cross-sectional schematic diagram of a throttling unit in another embodiment of a heat exchange device;

[0015] Figure 7 is a cross-sectional schematic diagram of a throttling unit in another embodiment of a heat exchange device;

[0016] Figure 8 It is a cross-sectional schematic diagram of a throttling unit in another embodiment of a heat exchange device. DETAILED DESCRIPTION

[0017] The specific implementation is described below with reference to the accompanying drawings.

[0018] See also Figure 1-3 The heat exchange device 1000 includes a heat exchange unit 1100 and a throttling unit 1200. The heat exchange unit 1100 includes a plate body 1101 and a heat exchange core 1102. The heat exchange core 1102 includes a plurality of stacked plates. The plate body 1101 and the plurality of stacked plates of the heat exchange core 1102 can be fixed by welding, so that the heat exchange unit 1100 forms a first fluid channel and a second fluid channel that are isolated from each other.

[0019] In the heat exchange core 1102, adjacent plates are stacked to form a first inter-plate channel or a second inter-plate channel. If one side of the plate is the first inter-plate channel, then the other side is the second inter-plate channel. For ease of description, one of the two adjacent plates is defined as the first plate and the other as the second plate. For example, the first plate and one of the two second plates adjacent to the plate form a first inter-plate channel, and the second plate forms a second inter-plate channel with the other second plate. The first inter-plate channel and the second inter-plate channel are relatively disconnected. The fluid in the first inter-plate channel and the fluid in the second inter-plate channel can exchange heat. It should be noted here that the relative disconnection between the first inter-plate channel and the second inter-plate channel means that they are not connected inside the heat exchange unit 1100. After the heat exchange device 1000 becomes part of the thermal management system, there may be a connection.

[0020] In this embodiment, the first fluid channel of heat exchange unit 1100 is a refrigerant flow channel, and the second fluid channel is a coolant flow channel (not shown in the figure). The first fluid channel includes a first channel 1103, a second channel 1104, a plurality of first inter-plate channels, and a third channel 1105. The heat exchange core also has a blocking portion 1106. In the stacking direction of the plates, the first channel 1103 and the second channel 1104 are located on either side of the blocking portion 1106. It should be noted that the blocking portion 1106 can be an integral structure with one of the plates or fixed to the plate.

[0021] like Figure 1 As shown, the throttling unit 1200 includes a valve body 1201 and a valve core assembly 1211. The valve body 1201 is fixed to the plate body 1101 by welding, screw connection, or other methods. The valve body 1201 has a first interface 1241, a second interface 1242, a first channel 1203, and a second channel 1204. The first interface 1241 is in communication with the first channel 1203, and the second interface 1242 is in communication with the second channel 1204. The valve body 1201 also has a receiving chamber 1205 with openings at both ends. In this embodiment, the receiving chamber 1205 includes a first opening 1213 that opens toward the heat exchange unit and a second opening 1212 that opens away from the heat exchange unit. A portion of the valve core assembly 1211 extends into the receiving chamber 1205 through the second opening 1212, and the valve core assembly 1211 is sealed and fixed to the valve body 1201. In this embodiment, the first port 1241, the second port 1242, and the open end of the accommodating chamber away from the heat exchange unit are located on the same side, which simplifies manufacturing. In other embodiments, the first port 1241 and the second port 1242 are located on the same side of the valve body, while the open end of the accommodating chamber away from the heat exchange unit can be located on another side of the valve body. Since the first port 1241 and the second port 1242 are located on the same side, when installing the external pipe, only one pressure block is required to secure the external pipe, which facilitates installation and takes up less space.

[0022] The valve core assembly 1211 includes a valve core 1214 and a valve seat 1206. The valve seat 1206 has a valve port 1207. In this embodiment, the valve core is a valve needle, which can move relative to the valve seat 1206 to adjust the opening of the valve port 1207.

[0023] The throttling unit 1200 also has a connector, which includes a tube body 1210, a fixing part 1209 and a connecting part 1208. The fixing part 1209 and the connecting part 1208 are in contact with each other. Of course, the fixing part 1209 and the connecting part 1208 can also be an integral structure, or the fixing part 1209 and the connecting part 1208 can be fixedly connected.

[0024] At least a portion of the connector extends through the first opening 1213 into the accommodating chamber 1205, and the fixing portion 1209 of the connector is sealed and fixed to the corresponding wall portion of the accommodating chamber 1205, so that the throttling unit is formed with a first valve chamber 12121 and a second valve chamber 12131. The first valve chamber 12121 and the second valve chamber 12131 are isolated from each other and do not communicate with each other, while the second valve chamber 12131 communicates with the first channel 1103. Furthermore, the first channel 1203 communicates with the second valve chamber 12131, and the second channel 1204 communicates with the first valve chamber 12121. The first port 1241 and the second valve chamber 12131 are connected via the first channel 1203, and the second port 1242 and the first valve chamber 12121 are connected via the second channel 1204.

[0025] In this embodiment, the fixing portion 1209 and the connecting portion 1208 are provided separately. Specifically, a first stepped surface 1215 is formed on the wall corresponding to the accommodating cavity 1205. The connecting portion 1208 includes a first mating portion 1216 and a second mating portion 1217. The second mating portion 1217 protrudes from the first mating portion 1216 toward the plate 1101. The upper end surface of the first mating portion 1216 is fixed to, abuts against, or contacts the first stepped surface 1313. The lower end surface of the first mating portion 1216 is fixed to, or abuts against, the fixing portion 1209, which is then fixed to, or abuts against, the plate.

[0026] A first accommodating portion 1218 and a second accommodating portion 1219 are formed within the second mating portion 1217. The second accommodating portion 1219 is closer to the plate body 1101 than the first accommodating portion 1218. A portion of the valve seat 1206 extends into the first accommodating portion 1218. A seal is provided between the outer wall of the valve seat 1206 and the inner wall of the first accommodating portion 1218. Specifically, a sealing ring can be used for the seal.

[0027] A portion of the tube body 1210 is positioned within the second accommodating portion 1219 . The outer wall of the tube body 1210 is sealed and secured to the inner wall of the second accommodating portion 1219 . Specifically, this sealing and securing can be achieved through riveting, welding, or other methods. In this embodiment, the inner diameter of the second accommodating portion 1219 is smaller than the inner diameter of the first accommodating portion 1218 . The tube body 1210 has a large diameter portion whose outer diameter is smaller than the inner diameter of the first accommodating portion 1218 and larger than the inner diameter of the second accommodating portion 1219 . This allows the large diameter portion of the tube body 1210 to extend into and be accommodated within the connecting portion 1208 .

[0028] A portion of the tube body 1210 is positioned within the first channel, and another portion of the tube body 1210 extends through the blocking portion 1106, connecting the first connecting channel 1220 within the tube body 1210 with the second channel 1104. When the valve core 1214 opens the valve port 1207, the second port 1242 passes through the second channel 1204, the first valve chamber 12121, the valve port 1207, and the first connecting channel 1220 to connect with the second channel 1104. This allows refrigerant flowing in from the second port 1242, after being throttled by the throttling unit 1200, to flow directly into the second channel 1104, which is farther away from the plate body 1101 than the first channel 1103. The position of the blocking portion 1106 and the length of the tube body 1210 can be adjusted to suit the application, thereby adjusting the lengths of the first and second channels.

[0029] For example, Figure 4 In the illustrated embodiment, the provision of the blocking portion 1106 allows the length of the first channel 1103 to be greater than the length of the second channel 1104. This arrangement allows the second blocking portion to be provided in the first channel and the third blocking portion to be provided in the third channel, thereby dividing the first channel into multiple sub-channels and the third channel into multiple sub-channels, thereby extending the flow path of the fluid. In this embodiment, the number of sub-channels into which the first channel is divided is the same as the number of sub-channels into which the third channel is divided. In this way, the inlet for the refrigerant entering the heat exchange unit and the outlet for the refrigerant flowing out of the heat exchange unit can be located in the same area corresponding to the same channel, which reduces the installation location restrictions of the throttling unit and also saves installation controls.

[0030] At least a portion of the fixing portion 1209 is located within the accommodating cavity 1205. The outer wall surface of the fixing portion 1209 is sealed and fixed to the corresponding inner wall surface of the accommodating cavity 1205. Specifically, the sealing and fixing can be performed by screwing, riveting, overfitting, welding, etc. The fixing portion 1209 also has a second connecting channel 1221, which connects the first channel 1203 and the second valve cavity 12131. The first interface 1241 can be connected to the first channel 1103 after passing through the first channel 1203, the second connecting channel 1221, and the second valve cavity 12131, so that the refrigerant undergoing heat exchange in the heat exchange unit 1100 can flow out of the heat exchange device from the first channel 1103, through the second valve cavity 12131, the second connecting channel 1221, the first channel 1203, and the first interface 1241.

[0031] In this embodiment, the fixing portion 1209 is fixed to the inner wall surface corresponding to the accommodating cavity 1205 by welding. This fixing method can fix the heat exchange unit, valve body, fixing portion, connecting portion, pipe body, etc. together by brazing.

[0032] It should be noted here that the plate body 1101 can be various plates or plate-like bodies located on the end side of the heat exchange unit 1100, such as an end plate, a bottom plate, or a mounting plate. Here, the plate body 1101 does not necessarily completely cover one end side of the heat exchange unit 1100. The plate body 1101 can also have a larger thickness and can be modified according to actual needs. As long as the part that can be fixed to the valve body can be called the plate body 1101.

[0033] The specific working method of the heat exchange device 1000 is as follows: when the valve core 1214 opens the valve port 1207, the refrigerant can flow in from the second interface 1242, and after being throttled by the throttling unit 1200, it can directly flow into the second channel 1104 of the heat exchange unit 1100, and then flow into the third channel 1105 through a part of the inter-plate channel, and then flow into the first channel 1103 through a part of the inter-plate channel after passing through the third channel 1105. When passing through the heat exchange unit 1100, the throttled refrigerant exchanges heat with the coolant in the coolant flow channel, absorbs the heat of the coolant, and then flows out of the heat exchange device through the second valve cavity 12131, the second connecting channel 1221, the first channel 1203 and the first interface 1241.

[0034] Figure 5 Another throttling unit 1200 is shown. Unlike the aforementioned embodiment, in this embodiment, the fixing portion and the connecting portion are integrated. The outer periphery of the first mating portion extends toward the heat exchange unit 1100 to form the fixing portion, and a second valve chamber is formed between the inner wall of the fixing portion and the outer wall of the second mating portion. The remaining structures of the fixing portion and the connecting portion are the same or similar to those of the aforementioned embodiment and are not further described here.

[0035] In this embodiment, to facilitate the processing of the valve body 1201, the second channel 1204 is an inclined channel connecting the second port 1242 and the first valve chamber 12121. The first channel 1203 includes a hole portion 1222 and a groove portion 1223. The hole portion 1222 is connected to the first port 1241, while the opening of the groove portion 1223 faces the plate body 1101 and is closed by the plate body 1101.

[0036] In this embodiment, the fixing portion and the connecting portion are an integral structure, while the tube body and the connecting portion are separate structures. This structure facilitates the fixation of the connecting body and the valve body. The connecting body is fixed to the valve body, the heat exchange unit, etc. as a whole by brazing, and the size of the tube body can be set according to the size of the first channel to prevent the tube body from extending into the first channel and causing excessive pressure drop of the fluid in the first channel. The applicability is relatively flexible.

[0037] Figure 6 Another structure of the throttling unit 1200 is shown, which is different from Figure 5 In the embodiment shown, the fixing portion and the connecting portion are an integrated structure, and there is no tube body in this embodiment. The second matching portion 1217 of the connecting portion extends toward the heat exchange unit and passes through the blocking portion. Figure 7 As shown, the first matching portion can also play the role of the fixing portion. In this way, the thickness of the first matching portion is greater than Figure 5 In the embodiment shown, the thickness of the first matching portion is relatively large, and the outer wall of the first matching portion is fixed to the inner wall of the accommodating cavity by interference fit, screw connection, or welding. This method is relatively simple to install the connector.

[0038] Figure 8 Another structure of the throttling unit 1200 is shown, which is different from Figure 5 In the embodiment shown, the valve body 1201 and the connector are integrally structured. The valve body has a connecting portion 1208, which has a first accommodating portion 1218. A portion of the valve seat 1206 is located in the first accommodating portion, and a portion of the valve seat 1206 extends into the first accommodating portion 1218. A seal is formed between the outer wall of the valve seat 1206 and the inner wall of the first accommodating portion 1218. The connecting portion 1208 further has a first connecting channel 1220, which is part of the accommodating cavity. The first opening 1213 of the accommodating cavity communicates with the second channel 1104. This embodiment has fewer parts and is relatively simple to install.

[0039] 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. Although this specification has described the present invention in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A heat exchange device, comprising a throttling unit and a heat exchange unit, wherein the heat exchange unit comprises a plate body and a heat exchange core, wherein the heat exchange unit has a first fluid channel and a second fluid channel isolated from each other, wherein the first fluid channel comprises a first hole channel, a second hole channel, and a third hole channel, wherein the heat exchange core further comprises a blocking portion, wherein the first hole channel and the second hole channel are located on the same side of the heat exchange unit, and the blocking portion is located between the first hole channel and the second hole channel, wherein the heat exchange device comprises a throttling unit and a heat exchange unit, wherein the throttling ... plate body The throttling unit includes a valve body and a valve core assembly, the valve body is fixed to the plate body, the valve body has an accommodating cavity, a first interface, a second interface, a first channel, and a second channel, wherein the first interface is communicated with the first channel, and the second interface is communicated with the second channel, the throttling unit has a connecting body, the connecting body has a first accommodating portion and a first connecting channel, the valve core assembly includes a valve seat, and the valve seat has a valve port; A portion of the valve core assembly is located in the accommodating cavity, and at least a portion of the valve seat is located in the first accommodating portion. A portion of the connector is located in the first channel and passes through the blocking portion. The first connecting channel is in communication with the second channel. The throttling unit has a first valve cavity and a second valve cavity, the second channel is connected to the first valve cavity, the second valve cavity is connected to the first channel and the first hole, and the valve port can connect the first valve cavity and the first connecting channel.

2. The heat exchange device according to claim 1, characterized in that The length of the first channel is greater than that of the second channel. A second blocking portion is provided in the first channel to divide the first channel into multiple sub-channels. A third blocking portion is provided in the third channel to divide the third channel into multiple sub-channels. The number of sub-channels into which the first channel is divided is the same as the number of sub-channels into which the third channel is divided.

3. The heat exchange device according to claim 1 or 2, characterized in that: The accommodating cavity has a first opening opening toward the first channel and a second opening opening facing away from the heat exchange unit. The connecting body and the valve body are separate structures. The connecting body includes a fixing portion and a connecting portion. The connecting portion has the first accommodating portion. At least a portion of the connecting body extends into the accommodating cavity through the first opening, and the fixing portion is sealed and fixed to the wall portion corresponding to the accommodating cavity, so that the throttling unit forms the first valve cavity and the second valve cavity.

4. The heat exchange device according to claim 3, characterized in that The fixing portion and the connecting portion are separately arranged, and the wall portion corresponding to the accommodating cavity is formed with a first step surface. The connecting portion includes a first matching portion and a second matching portion. The second matching portion protrudes from the first matching portion in the direction toward the plate body. The upper end surface of the first matching portion is fixed or abutted or in contact with the first step surface, and the lower end surface of the first matching portion is fixed or abutted with the fixing portion, and the fixing portion is fixed or abutted with the plate body.

5. The heat exchange device according to claim 4, characterized in that The outer wall surface of the fixing portion is sealed and fixed to the inner wall surface corresponding to the accommodating cavity by screwing, riveting, overfitting or welding. The fixing portion has a second connecting channel, which connects the first channel and the second valve cavity. The first interface is connected to the first channel after passing through the first channel, the second connecting channel and the second valve cavity.

6. The heat exchange device according to claim 5, characterized in that The connecting body also has a tube body, and the first accommodating portion and the second accommodating portion are formed in the second matching portion. The second accommodating portion is close to the plate body relative to the first accommodating portion. A part of the tube body is located in the second accommodating portion, and the outer wall surface of the tube body and the inner wall surface of the second accommodating portion are sealed and fixed.

7. The heat exchange device according to claim 6, characterized in that The inner diameter of the second accommodating portion is smaller than the inner diameter of the first accommodating portion, the tube body has a large diameter portion, the outer diameter of the large diameter portion is smaller than the inner diameter of the first accommodating portion and larger than the inner diameter of the second accommodating portion, and the outer wall surface of the tube body is welded and fixed to the inner wall surface of the second accommodating portion.

8. The heat exchange device according to claim 3, characterized in that The fixing portion and the connecting portion are an integral structure, a first step surface is formed on the wall portion corresponding to the accommodating cavity, and the connecting portion includes a first matching portion and a second matching portion, the second matching portion protrudes from the first matching portion in the direction toward the plate body, the upper end surface of the first matching portion is fixed or abuts or contacts the first step surface, the outer peripheral side of the first matching portion extends toward the heat exchange unit to form the fixing portion, and the second valve cavity is located between the inner wall surface of the fixing portion and the outer wall surface of the second matching portion, and the fixing portion is fixed or abuts against the plate body.

9. The heat exchange device according to claim 6, characterized in that The connecting portion and the tube body are an integral structure, the fixing portion and the first matching portion are an integral structure, and the outer wall surface of the first matching portion and the inner wall surface of the accommodating cavity are fixed by interference fit, screw connection or welding.

10. The heat exchange device according to claim 8 or 9, characterized in that: The second opening, the first interface, and the second interface are located on the same side of the valve body, the connecting body and the valve body are an integral structure, the second channel is an inclined channel, the first channel includes a hole portion and a groove portion, wherein the hole portion is connected to the first interface, the opening of the groove portion faces the plate body, and the opening of the groove portion is closed by the plate body.

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