CN113074568A

CN113074568A - Heat exchange assembly

Info

Publication number: CN113074568A
Application number: CN202010003522.2A
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: 2020-01-03
Filing date: 2020-01-03
Publication date: 2021-07-06

Abstract

The invention discloses a heat exchange assembly, which comprises a heat exchanger core body and a valve assembly, wherein the heat exchanger core body and the valve assembly are fixedly arranged; the heat exchange assembly has an entry portion that extends into the first fluid path, at least a portion of the valve core component extending into the entry portion. The heat exchange assembly is provided with a valve core component and a sensor, and is small in structure.

Description

Heat exchange assembly

Technical Field

The invention relates to the field of heat exchange, in particular to a heat exchange assembly.

Background

The battery heat management system for the new energy vehicle comprises a battery heat exchange system, wherein the battery heat exchange system can comprise a heat exchanger core and an electronic expansion valve, the battery heat exchange system can comprise a refrigerant and a cooling liquid, the cooling liquid can be used for cooling a battery after heat exchange in the heat exchanger core, the heat exchanger core can be of a plate type heat exchanger core structure, the refrigerant enters the inside of the heat exchanger core after passing through the electronic expansion valve, and heat exchange is carried out between the inside of the heat exchanger core and the cooling liquid. In order to improve the flow control precision of the working medium, the electronic expansion valve needs to acquire information through a pressure sensor and a temperature sensor arranged on a system pipeline, a system controller calculates the degree of superheat according to a corresponding control program and feeds the calculated degree of superheat back to the electronic expansion valve, and the electronic expansion valve adjusts the flow accordingly.

Disclosure of Invention

The invention aims to provide a heat exchange assembly with a small structure.

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

a heat exchange assembly comprising a heat exchanger core and a valve assembly, the heat exchanger core being fixedly arranged with the valve assembly, the heat exchanger core comprising a first fluid path, an inter-plate path, and a second fluid path, the heat exchanger core having a plurality of stacked plates, each plate having at least a first port and a second port, the first fluid path being formed at the first port of each plate and the second fluid path being formed at the second port of each plate along a stacking direction of the plates, the inter-plate path communicating the first fluid path and the second fluid path;

the valve assembly includes a valve body having a first cavity and a second cavity, a spool component, at least a portion of the spool component being located in the first cavity, at least a portion of the sensor being located in the second cavity, the sensor sensing a temperature and/or a pressure of the interplate path;

the heat exchange assembly has an inlet portion located in the first fluid path, and at least a portion of the valve core member extends into the inlet portion.

The technical scheme includes that the heat exchanger comprises a heat exchanger core body and a valve assembly, wherein the valve assembly comprises a valve body, a valve core component and a sensor, the valve body is provided with a first cavity and a second cavity, at least part of the valve core component is located in the first cavity, at least part of the sensor is located in the second cavity, and the second cavity is communicated with an inter-plate path; the heat exchange assembly has an inlet portion located in the first fluid path, and at least a portion of the valve core member extends into the inlet portion. Therefore, the fluid throttled from the valve assembly can directly enter the first fluid path, the sensor can measure the temperature and/or pressure of the fluid flowing through the inner part of the heat exchanger core, and meanwhile, the height of the heat exchange assembly is reduced as the extending part extends into the heat exchanger core; the heat exchange assembly with the valve core component and the sensor is small in structure.

Drawings

FIG. 1 is a schematic structural view of one embodiment of a heat exchange assembly;

FIG. 2 is a schematic view of the heat exchange assembly shown in FIG. 1;

FIG. 3 is a schematic view, partially in section, of the heat exchange assembly of FIG. 1;

FIG. 4 is another schematic cross-sectional view of the heat exchange assembly of FIG. 1;

FIG. 5 is another schematic cross-sectional view of the heat exchange assembly of FIG. 1;

FIG. 6 is an exploded view of the heat exchange assembly of FIG. 1;

FIG. 7 is an exploded view of the valve assembly;

FIG. 8 is a schematic structural view of a top plate of the heat exchange assembly shown in FIG. 1;

FIG. 9 is a schematic view of a first plate type of the heat exchange assembly of FIG. 1;

FIG. 10 is a schematic diagram of a second plate type of the heat exchange assembly of FIG. 1;

FIG. 11 is a schematic structural view of another heat exchange assembly;

FIG. 12 is a schematic cross-sectional view of the heat exchange assembly of FIG. 11;

FIG. 13 is an exploded view of the heat exchange assembly of FIG. 11;

FIG. 14 is an exploded view of an alternative construction of the heat exchange assembly of FIG. 11;

FIG. 15 is a schematic cross-sectional view of another heat exchange assembly;

FIG. 16 is a schematic view, partially in section, of another heat exchange assembly;

FIG. 17 is a schematic cross-sectional view of another heat exchange assembly;

fig. 18 is a cross-sectional schematic view of another heat exchange assembly.

Detailed Description

Referring to fig. 1 and 2, fig. 1 and 2 illustrate a heat exchange assembly 100, where the heat exchange assembly 100 includes a heat exchanger core 1 and a valve assembly 2, and the heat exchanger core 1 and the valve assembly 2 are fixedly disposed. The heat exchanger core 1 has a plurality of plates 11 arranged in a stacked manner, each adjacent plate 11 is welded and fixed, each plate 11 has at least a first port and a second port, the first ports of the plates 11 are aligned in the stacking direction of the plates, and the second ports of the plates 11 are aligned in the stacking direction of the plates. The first portholes and the second portholes are located at the adjacent edges of the plate 11, so that the fluid flowing through the plate can have a longer flow path, which contributes to the improved heat exchange efficiency.

Referring to fig. 2 to 10, the heat exchanger core 1 has at least a first flow passage 12 and a second flow passage 13, wherein the first flow passage 12 and the fluid in the second flow passage 13 can exchange heat inside the heat exchanger core; the heat exchanger core may also have a third flow passage or a fourth flow passage. The heat exchanger core comprises a plurality of first plates and a plurality of second plates which are arranged in a stacked mode, and the first plates and the second plates are stacked to form the first flow channels and the second flow channels; the first plate type includes a first aperture, a second aperture, and a third aperture; the second type of plate comprises a first porthole, a second porthole, the second type of plate does not have the third porthole, the third porthole is located between the first porthole and the second porthole along a length or width direction of the heat exchanger core; wherein the third porthole is located between the first porthole and the second porthole in the length or width direction of the heat exchanger core means that the first porthole and the second porthole may not be aligned, but the third porthole may be located in one area between the first porthole and the second porthole, for example in the length direction of the heat exchanger core, or the third porthole may be located in one area between the first porthole and the second porthole, for example in the width direction of the heat exchanger core.

The heat exchanger core 1 comprises a first fluid path 121, plate interspaces 122 and a second fluid path 123, a third fluid path 1224, the first fluid path 121 being formed at a first porthole of a plate of a first kind, a plate of a second kind, the second fluid path 123 being formed at a second porthole of a plate of a first kind, a plate of a second kind, the third fluid path 1224 being formed at a third porthole of said plate of a first kind, the plate interspaces 122 communicating the first fluid path 121, the second fluid path 123, the third fluid path 1224. Since the stack of adjacent plates will have at least two interplate paths formed between them, here the interplate path 122 refers specifically to the fluid path between adjacent plates, and this fluid path is part of the first flow channel and is in communication with the first fluid path, the second fluid path, and the third fluid path. Herein, the first fluid path 121 includes (but is not limited to) one channel and may have two or more channels, and the second fluid path 123 includes (but is not limited to) one channel and may have two or more channels.

The valve assembly 2 includes a valve body 21, a spool member 22, a sensor 23, a circuit board 24, the valve body 21 having a first cavity 211 and a second cavity 212, at least a portion of the spool member 22 being located in the first cavity 211, at least a portion of the sensor 23 being located in the second cavity 212, the sensor sensing a temperature and/or a pressure of the inter-plate path, wherein the second cavity 212 may be in communication with the inter-plate path 122; the sensor 23 is electrically connected to the circuit board 24.

In the illustrated construction, the sensor 23 extends into the heat exchanger core 1; of course, the sensor 23 may not extend into the core 1, the sensor 23 may be located above the core, and the second chamber in which the sensor 23 is located communicates with the interplate path 122 for the sensor 23 to collect the pressure and/or temperature of the fluid flowing through the core. The sensor 23 protruding into the core of the heat exchanger can further reduce the height of the sensor protruding out of the core of the heat exchanger, which is beneficial to reducing the size.

The heat exchange assembly is provided with an extending part 213, the extending part 213 is positioned on the first fluid path 121, at least part of the valve core component extends into the inner cavity of the extending part 213, and the valve core component and the inner wall of the extending part 213 are arranged in a sealing mode.

The valve core component 22 comprises a valve core 221, a rotor assembly 222 and a stator assembly 223, wherein the stator assembly 223 is sleeved on the periphery of the rotor assembly 222, and the stator assembly 223 is electrically connected with the circuit board 16; the valve assembly 2 further has a valve port 220, and the valve port 220 can communicate with the flow channels on two sides of the valve port 220; in this embodiment, the valve body 21 further includes a valve seat 224, the valve seat 224 is disposed on the outer periphery of the valve element 221 and is limited, the valve port 220 is formed on the valve seat 224, and the valve element 221 changes the flow cross-sectional area of the working medium at the valve port 220 by approaching and departing from the valve port 220, so that a throttle can be formed at the valve port 220. When the valve component 2 works, the current in the winding passing through the stator component 223 is controlled to change according to a preset rule, so that the stator component 223 is controlled to generate a changed excitation magnetic field, the rotor component 222 rotates under the action of the excitation magnetic field, and the rotor component 222 can drive the valve core 221 to move relative to the valve port 220 and adjust the opening degree of the valve port 220; the rotor assembly can drive the valve core to move relative to the valve port, and the mode of controlling the opening degree of the valve core relative to the valve port by adopting the mode of controlling the current passing through the stator assembly is favorable for improving the control precision of the flow.

The valve body 21 is welded and fixed to the heat exchanger core body 1, and as an embodiment, the heat exchanger core body 1 includes a top plate 113, a plurality of intermediate plates 114, and a bottom plate 115, the plurality of intermediate plates 114 are located between the top plate 113 and the bottom plate 115, the top plate 113, the plurality of intermediate plates 114, and the bottom plate 115 are welded and fixed, and the valve body 21 is welded and fixed to the top plate 113, or the valve body 21 is welded and fixed to the bottom plate 115. In another embodiment, the heat exchanger core includes a connecting body, a top plate, a plurality of intermediate plates, and a bottom plate, the plurality of intermediate plates are located between the top plate and the bottom plate, the top plate, the plurality of intermediate plates, and the bottom plate are welded and fixed, the valve body is welded and fixed to the connecting body, and the connecting body is welded and fixed to the top plate or the connecting body is welded and fixed to the bottom plate. In another embodiment, the heat exchanger core includes a connecting body, a top plate, a plurality of intermediate plates, and a bottom plate, wherein the plurality of intermediate plates are located between the top plate and the bottom plate, the top plate, the plurality of intermediate plates, and the bottom plate are welded and fixed, the connecting body is welded and fixed to the bottom plate, and the valve body is welded and fixed to the top plate. In another embodiment, the heat exchanger core includes a connecting body, a top plate, a plurality of intermediate plates, and a bottom plate, wherein the plurality of intermediate plates are located between the top plate and the bottom plate, the top plate, the plurality of intermediate plates, and the bottom plate are welded and fixed, the connecting body is welded and fixed to the top plate, and the valve body is welded and fixed to the top plate. The connecting body can be in the form of a connecting plate, and the connecting body can also be in the form of a connecting block.

In the structure illustrated in the drawings, the protruding portion 213 is formed integrally with the valve body 21, the valve body 21 includes a first side portion 214 and a second side portion 215, the first side portion 214 is provided in cooperation with the valve core member, the second side portion 215 is provided in cooperation with the heat exchanger core 1, and the second side portion 215 is welded and fixed to the heat exchanger core 1. The second side 215 is provided with a protruding portion 213 in a protruding manner, the first cavity 211 penetrates through the protruding portion 213, the first cavity 211 penetrates through the first side 214 and the second side 215, and the second cavity 212 penetrates through the first side 214 and the second side 215.

The valve body 21 has a first through hole 216, the second side portion 215 has a first groove 2151, and the first groove 2151 communicates the first through hole 216 with the first chamber 211. When the second side portion 215 is welded to the heat exchanger core 1, the first groove 2151 cooperates with the heat exchanger core 1 to form a flow passage.

The insertion portion 213 has a port portion 2131 and a root portion 2132, the root portion 2132 has a cutout 2133, the cutout 2133 communicates with the first groove 2151, the valve element member has a valve seat 224, the valve seat 224 is provided with a throttle inlet 2240, the throttle inlet 2240 is opened in a peripheral wall of the valve seat 224, and a flow area of the cutout 2133 is larger than a flow area of the throttle inlet 2240.

The opening depth of the notch 2133 of the root portion 2132 along the stacking direction of the plate sheets is larger than that of the first groove 2151, the notch 2133 is partially positioned inside the heat exchanger core 1, so that when the valve core component is positioned in the extending portion 213 and the throttling inlet 2240 is positioned inside the heat exchanger core 1, as can be seen in the figure, when the valve core component is positioned below the top plate 113, the opening depth of the notch 2133 is larger than that of the first groove 2151, fluid can enter the throttling inlet 2240 through the notch 2133 with a deeper depth after flowing in from the first groove 2151, and thus the valve core component can extend into the deeper inside of the heat exchanger core, which is beneficial to reducing the height of the valve component protruding out of the heat exchanger core and reducing the size.

The heat exchange assembly 100 comprises a drain tube 3, the drain tube 3 is located in a first fluid path 121, a valve core component comprises a throttling outlet passage 2241, an inner cavity of the drain tube 3 is communicated with the throttling outlet passage 2241, the first fluid path 121 comprises a first sub-path 1211 and a second sub-path 1212, the first sub-path 1211 is communicated with the inner cavity of the drain tube 3, and the second sub-path 1212 is located outside the drain tube 3;

the heat exchanger core 1 comprises a first baffle 13, the first baffle 13 being located in the second fluid path 123, the second fluid path 123 comprising a third sub-path 1231 and a fourth sub-path 1232, the third sub-path 1231 and the fourth sub-path 1232 being located on both sides of the first baffle 13;

the heat exchanger core 1 comprises a second baffle part 14, the second baffle part 14 is positioned in the first fluid path 121, the first fluid path 121 comprises a first sub-path 1211 and a second sub-path 1212, the first sub-path 1211 is communicated with the inner cavity of the draft tube 3, and the second sub-path 1212 is positioned outside the draft tube 3; the second barrier 14 separates the first sub path 1211 and the second sub path 1212.

The inter-plate paths 122 comprise at least a first heat exchange area 1221, a second heat exchange area 1222, and a third heat exchange area 1223, the first sub-path 1211 is in communication with the first heat exchange area 1221, the first heat exchange area 1221 is in communication with the third sub-path 1231, the third sub-path 1231 is in communication with the second heat exchange area 1222, the second heat exchange area 1222 is in communication with the second sub-path 1212, and the second sub-path 1212 is in communication with the third heat exchange area 1223.

Referring to fig. 8, the top plate 113 of the heat exchanger core 1 includes a first port 113a, a second port 113b, a third port 113c, a fourth port 113d, and a fifth port 113e, the first port 113a for forming a first fluid path 121, and the second port 113b for forming a second fluid path 123. The third port 113c is communicated with the second cavity 212, the fourth port 113d and the fifth port 113c are communicated with the second fluid channel 13, and the first flow channel 12 and the fluid in the second flow channel 13 exchange heat in the heat exchanger core

The intermediate plate 114 of the heat exchanger core 1 has a first type plate 1141 and a second type plate 1142, the first type plate 1141 of the heat exchanger core 1 referring to fig. 9, and the second type plate 1142 of the heat exchanger core 1 referring to fig. 10. By way of illustration, the first plate type 1141 of the heat exchanger core 1 includes a first port 1141a, a second port 1141b, a third port 1141c, a fourth port 1141d, a fifth port 1141e, the first port 1141a, the second port 1141b, the fourth port 1141d, the fifth port 1141e being located adjacent to an edge of the plate, the third port 1141c being located adjacent to a center of the plate with respect to the first port 1141a, the second port 1141b, and the third port 1141c being located between the first port 1141a and the second port 1141b in a length direction of the plate. The third port 1141c is used to form a third fluid path 1224 and a sensor may be inserted into the third port 1141 c.

The first plate 1141 has a plurality of first plates 1144 and a plurality of second plates 1145, the first plates 1144 and the second plates 1145 are stacked to form the inter-plate path 122, the first plate 1144 has a first step 1146a around a first port 1141a, the first step 1146a protrudes relative to a plate plane 1147 of the first plate 1144, the second plate 1144 has a second step 1146b around a second port 1141b, the second step 1146b protrudes relative to the plate plane 1147 of the first plate 1144, the first plate 1144 has a third step 1146c around a third port 1141c, the third step 1146c protrudes relative to the plate plane 1147 of the first plate 1144, and the fluids flowing through the first port, the second port and the third port are the same fluid. The third step portion 1146c has the same height as the first step portion 1146a, and the third step portion 1146c has the same height as the second step portion 1146 b. Therefore, after the plates are stacked, the third step part, the second step part and the first step part can correspondingly isolate the first hole, the second hole and the plate plane fluid path of the plate, the sensor can be inserted into the third hole, so that certain requirements are met on the sealing performance of the periphery of the third hole, the whole heat exchange assembly fails if leakage occurs, the third step part with the same height as the first hole and the second hole is arranged on the periphery of the third hole, and the third step part is welded and fixed with the adjacent plate structure, so that the sealing performance can be effectively solved. The peripheral structure of the fourth orifice of the first plate is similar to that of the fifth orifice of the first plate, and the fourth orifice and the fifth orifice flow through the same fluid.

A first concave ring 1148a is arranged on the periphery of the first hole 1141a of the second plate 1145 of the first plate 1141, a second concave ring 1148b is arranged on the periphery of the second hole 1141b, a third concave ring 1148c is arranged on the periphery of the third hole 1141c, and the concave ring structure of the second plate 1145 is matched with the stepped part structure of the first plate 1144 to form flow channel isolation.

The second plate 1142 of the heat exchanger core is provided with a plurality of first plates, a plurality of second plates and a plurality of third plates, the first plates of the second plates comprise a first port 1142a, a second port 1142b, a fourth port 1142d and a fifth port 1142e, the second plates of the second plates comprise a first port 1142a, a second port 1142b, a fourth port 1142d and a fifth port 1142e, the third plates of the second plates comprise a first baffle part and a first port, and the first baffle part is positioned at the corresponding position of the second ports of the first plates, the second plates and the fourth plates of the second plates; the first port 1142a, the second port 1142b, the fourth port 1142d and the fifth port 1142e are located at positions adjacent to edges of the plate, and the second plate is similar to a plate structure used in the plate heat exchanger, and thus, the description thereof is omitted.

The first apertures 1141a of the first type of plate 1141 are aligned with the first apertures 1142a of the second type of plate 1142 to form a portion of the first fluid path, the third apertures 113c of the top plate 113 are no smaller than the first apertures 1141a of the first type of plate 1141, the first apertures 1141a of the first type of plate 1141 are no smaller than the first apertures 1142a of the second type of plate 1142, the outer diameter of the port portion 2131 is smaller than the first apertures 1141a of the first type of plate 1141, and the outer diameter of the port portion 2131 is larger than the first apertures 1142a of the second type of plate 1142. The second side of the valve body 21 is welded and fixed with the periphery of the third hole arranged on the top plate, and sealing of the third hole of the first plate is achieved.

The drainage tube 3 is provided with a protruding part 31 and a main body part 32, the outer diameter of the protruding part 31 is larger than that of the main body part 32, the outer diameter of the main body part 32 is not larger than the first hole 1142a of the second type plate 1142, the main body part 32 extends into the first hole 1142a of the second type plate 1142, the outer diameter of the protruding part 31 is larger than that of the first hole 1142a of the second type plate 1142, the protruding part 31 can be hung on the second type plate 1142, and the protruding part 31 and the second type plate 1142 are welded and fixed to seal the communication between the first hole 1141a of the first type plate 1141 and the first hole 1142a of the second type plate 1142. The protruding portion 31 of the draft tube 3 may be welded with the port portion 2131 of the protruding portion 213 to help partition the flow path on both sides of the protruding portion 31. The arrangement of the draft tube 3 can guide the fluid of the throttling outlet channel of the valve core component communicated with the draft tube 3 to the first sub-path, so that the fluid is intensively introduced into the inter-plate path from the first sub-path, the heat exchange of the fluid in the inter-plate path is more uniform, and the heat exchange efficiency is improved.

The main body 32 has a bottom end 321, and the bottom end 321 is welded to at least one of the second plates 1142. In one embodiment, at least one of the second type plates 1142 has an extension 1143, the extension 1143 is located at the periphery of the first aperture 1142a of the second type plate 1142, and the outer wall of the bottom end 321 is welded and fixed with the wall of the extension 1143. Bottom end 321 is welded to extension 1143 to help isolate the internal cavity of draft tube 3 from the external cavity of draft tube 3 and to help guide the flow of fluid. As another embodiment, the bottom end 321 of the draft tube 3 has an extension body extending out of the periphery of the bottom end, and the extension body of the draft tube is welded and fixed to at least one of the second type plates.

The first blocking portion 13 may be a part of one of the second plates 1142 or may be a separate structure. As an embodiment, one of the second type plates 1142 has a first baffle 13 at the second port location of the plate, which may separate the fluid paths on both sides. The first notch 13 may be realized, for example, by not stamping the second orifice location to the plate of the second type plate 1142. As another embodiment, the first blocking portion 13 may be a single plate-shaped structure which closes the second aperture of one of the second type plates 1142, and the first blocking portion 13 may be welded and fixed to the adjacent plate. For added strength, the thickness of the first dam 13 may be greater than the second-type plate 1142. As another embodiment, the first blocking portion 13 may further have a first sheet portion and a second sheet portion, the first sheet portion is integrally provided with one of the second type plates, which is obtained by punching the second type plate 1142 without performing the second orifice position, and the second sheet portion is welded and fixed to the first sheet portion, and the second sheet portion is located on the side of the first sheet portion facing the top plate. The second sheet portion may serve to reinforce the first sheet portion against fluid impingement in the third sub-path.

The heat exchanger core has a third fluid path 1224, the third fluid path 1224 being in communication with the second chamber 212; the sensor 23 protrudes into the third fluid path 1224, the third fluid path 1224 extending deeper in the heat exchanger core 1 than the protrusion 213 extends into the heat exchanger core 1 in the stacking direction of the plates. In this manner, fluid entering third heat exchange area 1223 from second subpath 1212 may enter third fluid path 1224, sense the temperature and/or pressure of the fluid via sensor 23 extending into third fluid path 1224, and feed back to valve assembly 2 for controlling the flow regulation of valve assembly 2.

The valve assembly 2 includes a circuit board 24 that is electrically connected to the sensor, the valve assembly including a valve needle, the circuit board controlling some of the structure of the valve assembly to move the valve needle.

The valve assembly 2 may be arranged coaxially with the first fluid path 121, the sensor 23 being arranged in parallel with the valve assembly 2. Facilitating accurate control of the valve.

The refrigerant enters the drainage tube 3 through throttling expansion of the valve core part 222 and is evaporated in the heat exchanger core 1, the refrigerant exists in a gas-liquid two-phase state, and in order to improve fluid heat exchange of each heat exchange area, in the stacking direction of the plates, the height of the first heat exchange area 1221 is smaller than that of the second heat exchange area 1222, and the height of the second heat exchange area 1222 is smaller than that of the third heat exchange area 1223.

The valve body 21 is provided with a base portion 218 and an outer edge portion 219, the base portion 218 is located on the heat exchanger core 1, the projection of the base portion 218 in the stacking direction of the plates is located on the plates, the outer edge portion 219 extends out of the heat exchanger core, the outer edge portion 219 can be used for limiting and fixing of the valve core component, and the outer edge portion 219 extends out of the heat exchanger core, so that the fixing of the valve core component, for example, fixing in a screw mode is relatively simple, and interference influence of the heat exchanger core is prevented.

The heat exchange assembly 100 comprises a first port 101 and a second port 102, wherein the first port 101 is located in the valve body 21, the first port 101 is located at the port of the first through hole 216, and the second port 102 is located in the core 1. The flow of the heat exchange assembly is as follows: fluid enters from the first port 101, passes through the first groove 2151, passes through the throttle inlet passage 2240 of the valve core member, passes through the throttle outlet passage 2241, enters the inner chamber of the draft tube 3, enters the first sub-path 1211, the first heat exchange area 1221, the third sub-path 1231, the second heat exchange area 1222, the second sub-path 1212, the third heat exchange area 1223, the fourth sub-path 1232, and finally exits from the second port 102.

As another embodiment, referring to fig. 11 to 14, the heat exchange assembly 200 includes a heat exchanger core 1 'and a valve assembly 2', and the heat exchanger core 1 'and the valve assembly 2' are fixedly disposed. The valve assembly 2 'includes a valve body 21', a valve core member 22, a sensor 23, and a circuit board 24, the valve core member 22 includes a valve core 221, a rotor assembly 222, and a stator assembly 223, the valve core member and the like are similar to those shown in fig. 1, and are illustrated with the same reference numerals for simplicity.

The heat exchange assembly is provided with an extending part, the extending part is positioned on the first fluid path, at least part of the valve core component extends into an inner cavity of the extending part, and the valve core component and the inner wall of the extending part are arranged in a sealing mode.

In the structure illustrated in the drawings, the protruding portion 213 is formed integrally with the valve body 21 ', the valve body 21' has a first chamber 211 and a second chamber 212, at least part of the spool member 22 is located in the first chamber 211, at least part of the sensor 23 is located in the second chamber 212, and the second chamber 212 communicates with the plate-to-plate path 122; the sensor 23 extends into the heat exchanger core 1'; the sensor 23 is electrically connected to the circuit board 24. The protruding portion 213 protrudes into the first fluid path 121, and at least a portion of the spool member 22 protrudes into the protruding portion 213.

The valve body 21 comprises a first side portion 214 and a second side portion 215, the first side portion 214 is arranged in cooperation with the valve core component, the second side portion 215 is arranged in cooperation with the heat exchanger core 1 ', and the second side portion 215 is fixedly welded with the heat exchanger core 1'.

The second side 215 is provided with a protruding portion 213 in a protruding manner, the first cavity 211 penetrates through the protruding portion 213, the first cavity 211 penetrates through the first side 214 and the second side 215, and the second cavity 212 penetrates through the first side 214 and the second side 215.

The valve body 21' has a first through hole 216, the second side portion 215 has a first groove 2151, and the first groove 2151 communicates the first through hole 216 with the first chamber 211. When the second side portion 215 is welded to the heat exchanger core 1 ', the first groove 2151 cooperates with the heat exchanger core 1' to form a flow passage.

The valve body 21 'has a second through hole 217, the second side 215 has a second groove 2152, the second groove 2152 communicates the second through hole 217 with the second chamber 212, and the second groove 2152 cooperates with the heat exchanger core 1' to form a flow passage when the second side 215 is welded to the heat exchanger core 1.

Referring to fig. 13, the top plate 113 ' of the heat exchanger core 1 ' may have a communication hole 1130, the communication hole 1130 extends along the top plate 113 ', one end of the communication hole 1130 is communicated with the second through hole 217, the other end of the communication hole 1130 is communicated with the second chamber 212, and the communication hole 1130 is matched with the second groove 2152, so that a larger flow of fluid can be facilitated to leave from the second chamber through the second through hole after passing through the communication hole, the pressure drop can be reduced, and the flow resistance can be reduced.

The valve body 21 'is provided with a base part 218 and an outer edge part 219, the base part 218 is located on the heat exchanger core 1', the projection of the base part 218 in the stacking direction of the plates is located on the plates, the outer edge part 219 extends out of the heat exchanger core, and the outer edge part 219 can be used for limiting and fixing the valve core component.

The heat exchange assembly 200 comprises a drain tube 3, the drain tube 3 is located in a first fluid path 121, a valve core component comprises a throttling outlet passage 2241, an inner cavity of the drain tube 3 is communicated with the throttling outlet passage 2241, the first fluid path 121 comprises a first sub-path 1211 and a second sub-path 1212, the first sub-path 1211 is communicated with the inner cavity of the drain tube 3, and the second sub-path 1212 is located outside the drain tube 3; the arrangement of the draft tube 3 can guide the fluid of the throttling outlet channel of the valve core component communicated with the draft tube 3 to the first sub-path, so that the fluid is intensively introduced into the inter-plate path from the first sub-path, the heat exchange of the fluid in the inter-plate path is more uniform, and the heat exchange efficiency is improved.

The heat exchanger core 1' comprises a first baffle 13, the first baffle 13 being located in the second fluid path 123, the second fluid path 123 comprising a third sub-path 1231 and a fourth sub-path 1232, the third sub-path 1231 and the fourth sub-path 1232 being located on both sides of the first baffle 13;

the heat exchanger core 1' comprises a second baffle part 14, the second baffle part 14 is positioned in the first fluid path 121, the first fluid path 121 comprises a first sub-path 1211 and a second sub-path 1212, the first sub-path 1211 is communicated with the inner cavity of the draft tube 3, and the second sub-path 1212 is positioned outside the draft tube 3; the second barrier 14 separates the first sub path 1211 and the second sub path 1212.

The core 1' comprises a third baffle 15, the third baffle 15 is located outside the draft tube 3, the second sub-path 1212 comprises a first sub-path 1212a and a second sub-path 1212b, and the first sub-path 1212a and the second sub-path 1212b are located on both sides of the third baffle 15.

The second plate 1142 of the heat exchanger core is provided with a plurality of first plates, a plurality of second plates, a plurality of third plates and a plurality of fourth plates, the first plates of the second plates comprise a first hole 1142a, a second hole 1142b, a fourth hole 1142d and a fifth hole 1142e, the second plates of the second plates comprise a first hole 1142a, a second hole 1142b, a fourth hole 1142d and a fifth hole 1142e, the third plates of the second plates comprise a first baffle part, the first holes and the fourth plates of the second plates comprise a second baffle part and second holes, and the first baffle part is positioned corresponding to the second holes of the first plates, the second plates and the fourth plates of the second plates; the second blocking part is positioned at the position corresponding to the first holes of the first plate, the second plate and the third plate of the second type plate.

The inter-plate paths 122 at least include a first heat exchange area 1221, a second heat exchange area 1222, and a third heat exchange area 1223, the first sub-path 1211 is in communication with the first heat exchange area 1221, the first heat exchange area 1221 is in communication with the third sub-path 1231, the third sub-path 1231 is in communication with the second heat exchange area 1222, the second heat exchange area 1222 is in communication with the first sub-path 1212a of the second sub-path 1212, and the first sub-path 1212a of the second sub-path 1212 is in communication with the third heat exchange area 1223.

The third heat exchange area 1223 includes a first division 1223a and a second division 1223b, the first division 1223a communicates with the first branch path 1212a, the first division 1223a communicates with the fourth sub path 1232, the fourth sub path 1232 communicates with the second division 1223b, and the second division 1223b communicates with the second branch path 1212 b.

The drainage tube 3 is provided with a protruding part 31 and a main body part 32, the outer diameter of the protruding part 31 is larger than that of the main body part 32, the outer diameter of the main body part 32 is not larger than the first hole 1142a of the second type plate 1142, the main body part 32 extends into the first hole 1142a of the second type plate 1142, the outer diameter of the protruding part 31 is larger than that of the first hole 1142a of the second type plate 1142, the protruding part 31 can be hung on the second type plate 1142, and the protruding part 31 and the second type plate 1142 are welded and fixed to seal the communication between the first hole 1141a of the first type plate 1141 and the first hole 1142a of the second type plate 1142. The protruding portion 31 of the draft tube 3 may be welded with the port portion 2131 of the protruding portion 213 to help partition the flow path on both sides of the protruding portion 31.

The first stopper has the structure of the above-described embodiment. The third blocking part 15 is located at the first hole position of the plate, the third blocking part 15 is provided with a middle hole 151, the drainage tube 3 penetrates through the middle hole 151, and the outer wall of the drainage tube 3 is welded and fixed with the third blocking part 15, so that the flow channels on two sides of the second blocking part are separated. The second stop may be part of one of the first type of plates or may be a separate structure. As an embodiment, one of the plates of the first type has a second stop, which can be realized, for example, by punching a smaller aperture in this sheet of the plate of the first type. The third baffle part 15 is provided with an extension body 152, the extension body 152 of the second baffle part is positioned at the periphery of the middle hole 151 of the second baffle part, and the extension body 152 of the third baffle part 15 is welded and fixed with the outer wall of the drainage tube 3.

As another embodiment, the third baffle may be a single plate-like structure that partially closes the first orifice of one of the first plates, and the second baffle may be welded and fixed to the adjacent plate. The thickness of the third baffle may be greater than the first class of plates for increased strength. As another embodiment, the third flap may also have a first sheet portion and a second sheet portion, the first sheet portion being provided integrally with one of the first type plates by punching a smaller aperture through this one of the first type plates. The second piece is welded and fixed to the first piece, and the second piece is located on the side of the first piece facing the top plate. The second sheet portion may serve to reinforce the strength of the first sheet portion to facilitate resistance to fluid impingement in the second sub-path. The first sheet part and/or the second sheet part can be provided with an extending body, the extending body is positioned at the periphery of the middle hole of the third blocking part, and the extending body of the third blocking part is welded and fixed with the outer wall of the drainage tube.

A third heat exchange area 1223 has a third fluid pathway 1224, the third fluid pathway 1224 being in communication with the second chamber 212; the sensor 23 protrudes into the third fluid path 1224, the extension depth of the third fluid path 1224 in the heat exchanger core 1 ' in the stacking direction of the plate is greater than the extension depth of the protruding portion 213 in the heat exchanger core 1 ', and the extension depth of the third fluid path 1224 in the heat exchanger core 1 ' does not exceed the plate on which the third baffle portion 15 is located. As such, fluid entering second zone 1223b from fourth subpath 1232 may enter third fluid path 1224, sense a temperature and/or pressure of the fluid via a sensor extending into third fluid path 1224, and feed back to the valve assembly for controlling flow regulation thereof.

The refrigerant enters the drainage tube through throttling expansion of the valve core part and is evaporated in the heat exchanger core body, the refrigerant exists in a gas-liquid two-phase state, in order to improve fluid heat exchange of each heat exchange area, in the stacking direction of the plates, the height of the first heat exchange area 1221 is smaller than that of the second heat exchange area 1222, and the height of the second heat exchange area 1222 is smaller than that of the third heat exchange area 1223. In the stacking direction of the plates, the height of the first heat exchange area 1221 is smaller than the height of the second heat exchange area 1222, the height of the second heat exchange area 1222 is smaller than the height of the first partition 1223a, and the height of the first partition 1223a is smaller than the height of the second partition 1223 b.

The heat exchange assembly 200 comprises a first port 101 and a second port 102, wherein the first port 101 and the second port 102 are located in the valve body 21', the port of the first through hole 216 is a first port, and the port of the second through hole 217 is a second port. The flow of the heat exchange assembly is as follows: fluid enters from the first port 101, passes through the first groove, passes through the throttle inlet channel of the valve core member, passes through the throttle outlet channel, enters the inner cavity of the draft tube, enters the first sub-path 1211, the first heat exchange area 1221, the third sub-path 1231, the second heat exchange area 1222, the second sub-path 1212, the first sub-path 1223a, the fourth sub-path 1232, and finally exits from the second port from the second sub-path 1223 b.

Referring to fig. 15, fig. 15 illustrates a cross-sectional view of the heat exchange assembly 300. The heat exchange assembly 300 comprises a heat exchanger core 1 'and a valve assembly 2', wherein the heat exchanger core 1 'and the valve assembly 2' are fixedly arranged. The valve assembly 2 "includes a valve body 21", a valve core component 22, a sensor 23, and a circuit board 24, the valve core component 22 includes a valve core 221, a rotor assembly 222, and a stator assembly 223, the valve core component and the like are similar to those shown in fig. 1, and are illustrated with the same reference numerals for simplicity.

The valve body 21 "has an extended portion 213", the extended portion 213 "has a distal portion 2134, the distal portion 2134 is welded to the extended portion 31 of the draft tube 3, the distal portion 2134 extends into the heat exchanger core 1" to a depth greater than the depth of the third fluid path 1224, such that the extended portion 31 can separate the fluid paths, the first fluid path includes the draft tube inner cavity, the first sub-path, the second sub-path located outside the draft tube, such that the fluid enters the first sub-path 1211, the first heat exchange area 1221, the third sub-path 1231, the second heat exchange area 1222, the second sub-path 1212, the first sub-area 1223a, the fourth sub-path 1232, the second sub-path 1223b when entering the draft tube inner cavity from the throttle outlet passage, and finally exits from the second port.

The plate structures illustrated in the above figures are only examples, and as other embodiments, the plate structures of the heat exchanger core may be other plate structures.

As another embodiment, fig. 16 illustrates a partial structure of the heat exchange assembly 400, where the heat exchange assembly 400 has an extending portion 213 "', the extending portion 213"' is located in the first fluid path 121, at least a portion of the valve core component is located in the extending portion 213 "', the extending portion 213"' is welded and fixed to the drainage tube 3, and the extending portion 213 "'is welded and fixed to the valve body 21"'.

Referring to fig. 17, fig. 17 illustrates a cross-sectional view of the heat exchange assembly 500. The heat exchange assembly 500 comprises a heat exchanger core 1 "'and a valve assembly 2"', wherein the heat exchanger core 1 "'and the valve assembly 2"' are fixedly arranged. The heat exchanger core 1' ″ has a plurality of stacked plates 11, each adjacent plate 11 is welded and fixed, each plate 11 has at least a first hole and a second hole, the first holes of the plates 11 are aligned along the stacking direction of the plates, and the second holes of the plates 11 are aligned. The first portholes and the second portholes are located at the adjacent edges of the plate 11, so that the fluid flowing through the plate can have a longer flow path, which contributes to the improved heat exchange efficiency.

The valve assembly 2 "' includes a valve body 21, a spool component 22, a sensor 23, a circuit board 24, the valve body 21 having a first cavity 211 and a second cavity 212, at least a portion of the spool component 22 being located in the first cavity 211, at least a portion of the sensor 23 being located in the second cavity 212, the first cavity 211 being in communication with the interplate path 122; the sensor 23 extends into the heat exchanger core 1; the sensor 23 is electrically connected to the circuit board 24.

The heat exchanger core body 1' comprises a first flow passage and a second flow passage, and the first flow passage and the second flow passage are not communicated; the heat exchanger core 1' ″ comprises a plurality of first plates and a plurality of second plates which are arranged in a stacked mode, and the first plates and the second plates are stacked to form the first flow channels and the second flow channels;

a first plate type 1141 having a plurality of first plates and a plurality of second plates, the first plate type 1141 including a first aperture, a second aperture, a third aperture;

a second plate 1142 having a plurality of first plates, a plurality of second plates, the first plates of the second plates 1142 including a first porthole, a second porthole, the second plates of the second plates including a first porthole, a second porthole, the third porthole being located between the first porthole and the second porthole along a length or width direction of the heat exchanger core;

the first flow channel has a first flow path 121, a second flow path 123, a third flow path, and an inter-plate path 122, the first flow path 121 is formed at the first apertures of the first and second plates, the second flow path 123 is formed at the second apertures of the first and second plates, the third aperture of the first plate is aligned with the third aperture of the second plate of the first plate to form the third flow path, and the inter-plate path connects the first flow path and the second and third flow paths.

At least a portion of spool member 22 extends into third fluid path 1224 and at least a portion of sensor 23 extends into second fluid path 123; the valve body 21 integrally has an extending portion 213, the extending portion 213 extends into the third fluid path 1224, at least a portion of the valve core member 22 extends into the extending portion 213, and the valve core member 22 is sealingly provided with an inner wall of the extending portion 213.

The plate-to-plate paths 122 comprise at least a first heat exchange area 1221 and a second heat exchange area 1222, the first heat exchange area 1221 being in communication with the first fluid path 121 and the second heat exchange area 1222 being in communication with the second fluid path 123. The valve body 21' ″ has a first port and a second port, the first port can be used as an inlet of the fluid, the second port can be used as an outlet of the fluid, and the fluid enters from the first port, passes through the throttling inlet channel, the throttling port and the throttling outlet channel of the valve core part, enters the third fluid path, and exits from the second port through the first heat exchange area, the first fluid path, the second heat exchange area, the second fluid path and the second cavity. When the heat exchange assembly is used as an evaporator, fluid is subjected to throttling and pressure reduction through the valve core component, is evaporated and absorbs heat in the heat exchanger, and when the fluid passes through the second cavity, temperature and/or pressure information of the fluid is obtained by the sensor and is fed back to the circuit board of the valve core component, and the valve core component can be adjusted in time. Therefore, the valve core component can be accurately and rapidly adjusted, so that the superheat degree of fluid at the outlet of the heat exchange assembly is adjusted more conveniently, and the stability of the performance of a system connected with the heat exchange assembly is facilitated.

Referring to fig. 18, fig. 18 illustrates a cross-sectional view of a heat exchange assembly 600. The heat exchange assembly 600 comprises a heat exchanger core 1 "" and a valve assembly 2 "", wherein the heat exchanger core 1 "" and the valve assembly 2 "" are fixedly arranged. The heat exchanger core 1 "" has a plurality of stacked plates 11, each adjacent plate 11 is welded and fixed, each plate 11 has at least a first port and a second port, and along the stacking direction of the plates, the first ports of the plates 11 are aligned, and the second ports of the plates 11 are aligned. The first portholes and the second portholes are located at the adjacent edges of the plate 11, so that the fluid flowing through the plate can have a longer flow path, which contributes to the improved heat exchange efficiency.

The valve assembly 2 "" includes a valve body 21, a spool member 22, a sensor 23, a circuit board 24, the valve body 21 having a first cavity 211 and a second cavity 212, at least a portion of the spool member 22 being located in the first cavity 211, at least a portion of the sensor 23 being located in the second cavity 212, the first cavity 211 being in communication with the interplate path 122; the sensor 23 extends into the heat exchanger core 1 ""; the sensor 23 is electrically connected to the circuit board 24.

The heat exchanger core 1' comprises a first flow channel and a second flow channel, wherein the first flow channel is not communicated with the second flow channel; the heat exchanger core 1' comprises a plurality of first plates and a plurality of second plates which are arranged in a stacked mode, and the first plates and the second plates are stacked to form the first flow channels and the second flow channels;

the first type plate 1141 has a plurality of first plates and a plurality of second plates, the first type plate 1141 includes a first aperture 1141a, a second aperture 1141b, a third aperture 1141 c;

the second plate type 1142 has a plurality of first plates, a plurality of second plates, the first plates of the second plate type 1142 including a first port 1141a, a second port 1141b, the second plates of the second plate type 1142 including a first port, a second port, the third port 1141c being located between the first port 1141a and the second port 1141b along the length or width direction of the heat exchanger core;

the second type plate 1142 has a plurality of third plates and a plurality of fourth plates; the third plate of the second type plate 1142 comprises a first baffle 13 and a second orifice, and the fourth plate of the second type plate comprises a second baffle 14 and a first orifice; the first blocking part 13 is positioned at a position corresponding to a first hole of the first plate, the second plate and the fourth plate, and the second blocking part 14 is positioned at a position corresponding to a second hole of the first plate, the second plate and the third plate; the first fluid path 121 includes a first sub-path 1211 and a second sub-path 1212, and the first sub-path 1211 and the second sub-path 1212 are located at two sides of the first blocking portion 13; the third fluid path 1224 extends into the heat exchanger to a depth less than the depth of the first dam 13 in the heat exchanger; the second fluid path 123 includes a third sub-path 1231 and a fourth sub-path 1232, and the third sub-path 1231 and the fourth sub-path 1232 are located at both sides of the second gate 14.

The first fluid path has a first fluid path 121, a second fluid path 123, a third fluid path 1224, an inter-plate path 122, the first fluid path 121 is formed at the first aperture of the first type plate, the second fluid path 123 is formed at the second aperture of the first type plate, the second type plate, the third aperture of the first plate of the first type plate is aligned with the third aperture of the second plate of the first type plate to form the third fluid path 1224, the inter-plate path 122 connects the first fluid path 121 and the second fluid path 123, the third fluid path 1224; at least a portion of spool member 22 extends into third fluid path 1224 and at least a portion of sensor 23 extends into second fluid path 123; the valve body 21 has an extending portion 213, the extending portion 213 extends into the third fluid path 1224, at least a portion of the valve core member 22 extends into the extending portion 213, and the valve core member 22 is sealingly disposed with an inner wall of the extending portion 213.

The inter-plate paths 122 at least comprise a first heat exchange area 1221, a second heat exchange area 1222, a third heat exchange area 1223, a fourth heat exchange area 1229, the first sub-path 1211 is in communication with the first heat exchange area 1221, the first heat exchange area 1221 is in communication with the third sub-path 1231, the first sub-path 1211 is in communication with the second heat exchange area 1222, the second heat exchange area 1222 is in communication with the third sub-path 1231, the third sub-path 1231 is in communication with the third heat exchange area 1223, the third heat exchange area 1223 is in communication with the second sub-path 1212, the second sub-path 1212 is in communication with the fourth heat exchange area 1229, the fourth heat exchange area 1229 is in communication with the fourth sub-path 1232, and the flow directions of fluids in adjacent heat exchange areas are opposite. The height of the first heat exchange area is smaller than that of the second heat exchange area, the height of the second heat exchange area is smaller than that of the third heat exchange area, and the height of the third heat exchange area is smaller than that of the fourth heat exchange area. At least a portion of the spool member 22 is inserted into the third fluid path, and the fourth sub-path 1232 is communicated with the second chamber 212.

The heat exchange assembly comprises a draft tube 3, the draft tube 3 is located in the second fluid path 123, the second cavity 212 is communicated with an inner cavity 31 of the draft tube 3, the second blocking part 14 is provided with a middle hole 141, the inner cavity 31 of the draft tube 3 is communicated with the middle hole 141 of the second blocking part 14, the outer wall of the draft tube 3 is welded and fixed with the second blocking part 14, and thus, runners on two sides of the second blocking part are separated.

The drainage tube is provided with a protruding part and a main body part, the outer diameter of the protruding part is larger than that of the main body part, the main body part extends into the second hole of the second type plate, the protruding part is located in the second hole of the first type plate, and the protruding part is welded and fixed with the first type plate or the second type plate.

The valve body 21' ″ has a first port and a second port, the first port may be used as an inlet of the fluid, the second port may be used as an outlet of the fluid, and the fluid enters from the first port, passes through the throttle inlet channel, the throttle port, and the throttle outlet channel of the valve core member, enters the third fluid path, and exits from the second port through the first heat exchange region, the first sub-path, the second heat exchange region, the third sub-path, the third heat exchange region, the second sub-path, the fourth heat exchange region, and the second chamber. When the heat exchange assembly is used as an evaporator, fluid is subjected to throttling and pressure reduction through the valve core component, is evaporated and absorbs heat in the heat exchanger, and when the fluid passes through the second cavity, temperature and/or pressure information of the fluid is obtained by the sensor and is fed back to the circuit board of the valve core component, and the valve core component can be adjusted in time. Therefore, the valve core component can be accurately and rapidly adjusted, so that the superheat degree of fluid at the outlet of the heat exchange assembly is adjusted more conveniently, and the stability of the performance of a system connected with the heat exchange assembly is facilitated. In addition, the heat exchange core body is internally provided with the first blocking part and the second blocking part, so that the multi-flow design inside the heat exchange core body can be realized, the heat exchange of fluid in the heat exchanger is more uniform, and the heat exchange efficiency is improved.

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 assembly comprising a heat exchanger core and a valve assembly, the heat exchanger core being fixedly arranged with the valve assembly, the heat exchanger core comprising a first fluid path, an inter-plate path, and a second fluid path, the heat exchanger core having a plurality of stacked plates, each plate having at least a first port and a second port, the first fluid path being formed at the first port of each plate and the second fluid path being formed at the second port of each plate along a stacking direction of the plates, the inter-plate path communicating the first fluid path and the second fluid path;

2. The heat exchange assembly of claim 1, wherein: the sensor extends into the heat exchanger core; the heat exchange assembly includes a draft tube located in the first fluid path, the valve assembly includes a throttle outlet passage, the draft tube lumen communicates with the throttle outlet passage, the first fluid path includes a first sub-path communicating with the draft tube lumen and a second sub-path located outside the draft tube;

the heat exchanger core includes a first baffle located in the second fluid path, the second fluid path including a third sub-path and a fourth sub-path, the third and fourth sub-paths being located on opposite sides of the first baffle;

the inter-plate path at least comprises a first heat exchange area, a second heat exchange area and a third heat exchange area, the first sub-path is communicated with the first heat exchange area, the first heat exchange area is communicated with the third sub-path, the third sub-path is communicated with the second heat exchange area, the second heat exchange area is communicated with the second sub-path, and the second sub-path is communicated with the third heat exchange area.

3. The heat exchange assembly of claim 2, wherein: the third heat exchange zone having a third fluid path in communication with the second chamber;

the third fluid path extends to a depth in the heat exchanger core in the stacking direction of the plates that is greater than a depth of the protrusion into the heat exchanger core.

4. The heat exchange assembly of claim 2, wherein: in the stacking direction of the plate sheets, the height of the first heat exchange area is smaller than that of the second heat exchange area, and the height of the second heat exchange area is smaller than that of the third heat exchange area.

5. The heat exchange assembly of any one of claims 1-4, wherein: the heat exchange assembly includes a first port and a second port, the valve assembly includes a throttled inlet passage, the first port is in communication with the throttled inlet passage, and the second port is in communication with the second fluid aperture; the first port is disposed in the valve body.

6. The heat exchange assembly of claim 5, wherein: the valve body comprises a first side part and a second side part, the first side part is matched with the valve core part, the second side part is matched with the heat exchanger core body, and the second side part is welded and fixed with the heat exchanger core body;

the second side part is convexly provided with the extending part, the first cavity penetrates through the first side part and the second side part, and the second cavity penetrates through the first side part and the second side part;

the valve body is provided with a first through hole, the second side part is provided with a first groove, and the first groove is communicated with the first through hole and the first cavity; when the second side part is welded and fixed with the heat exchanger core, the first groove is matched with the heat exchanger core to form a flow channel;

the stretching portion is provided with a port portion and a root portion, the root portion is provided with a notch, the notch is communicated with the first groove, the valve core component is provided with a valve seat, the valve seat is provided with a throttling inlet, the throttling inlet is arranged on the peripheral wall of the valve seat, and the flow area of the notch is larger than that of the throttling inlet.

7. The heat exchange assembly of claim 2, wherein: the heat exchanger core comprises a second baffle part, the second baffle part is positioned outside the draft tube, the second sub-path comprises a first branch path and a second branch path, and the first branch path and the second branch path are positioned on two sides of the second baffle part; the first branch path is communicated with the second heat exchange area;

the third heat exchange zone includes a first partition in communication with the first subpath, and a second partition in communication with the second subpath.

8. The heat exchange assembly of claim 7, wherein: the interplate paths including a third fluid path in communication with the second chamber, the sensor extending into the third fluid path;

in the stacking direction of the plate sheets, the height of the first heat exchange area is smaller than that of the second heat exchange area, the height of the second heat exchange area is smaller than that of the first partition area, and the height of the first partition area is smaller than that of the second partition area.

9. The heat exchange assembly of claim 7 or 8, wherein: the valve body is provided with a first port and a second port, the valve assembly includes a throttle inlet passage, the first port is in communication with the throttle inlet passage, and the second port is in communication with the second chamber.

10. The heat exchange assembly of claim 8, wherein: the valve body is provided with a first cavity and a second cavity, at least part of the valve core component is positioned in the first cavity, at least part of the sensor is positioned in the second cavity, and the second cavity is communicated with the inter-plate path; the sensor extends into the heat exchanger core; the extending part integrally protrudes out of the valve body;

the valve body comprises a first side part and a second side part, the first side part is matched with the valve core part, the second side part is matched with the heat exchanger core body, and the second side part is welded and fixed with the heat exchanger core body;

the valve body is provided with a first through hole, the second side part is provided with a first groove, and the first groove is communicated with the first through hole and the first cavity; when the second side part is welded and fixed with the heat exchanger core, the first groove is matched with the heat exchanger core to form a flow channel; the valve body is provided with a second through hole, the second side portion is provided with a second groove, the second groove is communicated with the second through hole and the second cavity, and when the second side portion is welded and fixed with the heat exchanger core, the second groove is matched with the heat exchanger core to form a flow channel.

11. The heat exchange assembly of claim 7 or 8, wherein: the valve assembly comprises a circuit board electrically connected with the sensor, the valve assembly comprises a valve needle, and the circuit board controls the valve needle to move; the valve assembly is disposed coaxially with the first fluid path, and the sensor is disposed in parallel with the valve assembly.