CN211503790U

CN211503790U - Heat exchange assembly

Info

Publication number: CN211503790U
Application number: CN201921469616.8U
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: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-09-15
Anticipated expiration: 2029-09-05

Abstract

The utility model discloses a heat exchange assembly, which comprises a heat exchange core body and a fluid control component, wherein the heat exchange core body is at least provided with a first flow passage and a second flow passage, and the fluid control component comprises a first passage and a second passage; one of the first channel and the second channel is communicated with the first flow channel; the fluid control component comprises a valve body block, the valve body block is at least provided with a first port and a second port, the second port is communicated with the first flow passage, and the first port is a fluid inlet; the fluid control component comprises a first electromagnetic valve core and an expansion valve core, the fluid control component comprises an electromagnetic valve port, the second channel comprises an electromagnetic valve port, the first channel is provided with a throttling port, and the expansion valve core is provided with a throttling port or is matched with the valve body block body to be provided with a throttling port. The heat exchange assembly has two functions.

Description

Heat exchange assembly

Technical Field

The utility model relates to a heat exchange technology field.

Background

A plate type heat exchanger is adopted as an evaporator in a vehicle air conditioning system, two fluids, namely a refrigerant and a cooling liquid, are arranged in the plate type heat exchanger, and the refrigerant is evaporated in the plate type heat exchanger after passing through an expansion valve, so that the vehicle refrigeration requirement is met. Since the plate heat exchanger is used in combination with an expansion valve when used as an evaporator, the plate heat exchanger used in combination with the expansion valve is used as an evaporator in an air conditioning system.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat exchange assembly with two kinds of functions.

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

a heat exchange assembly comprises a heat exchange core and a fluid control component, wherein the fluid control component is fixed with the heat exchange core, the heat exchange core is provided with at least a first flow passage and a second flow passage, the first flow passage is isolated from the second flow passage, and the fluid control component comprises a first channel and a second channel; one of the first channel and the second channel is communicated with the first flow channel;

the fluid control component includes a valve body block having at least a first port and a second port, the second port in communication with the first flow passage, the first port being a fluid inlet;

the fluid control component comprises a first solenoid valve spool and an expansion valve spool, the fluid control component comprises a solenoid valve port, the second channel comprises the solenoid valve port, the first channel is provided with a throttling port, and the expansion valve spool is provided with the throttling port or the expansion valve spool is matched with the valve body block body and provided with the throttling port.

The technical scheme of the utility model includes heat exchange core and fluid control part, the fluid control part includes first solenoid valve case and expansion valve case, the fluid control part includes first passageway and second passageway; the second passage comprises the solenoid valve port, the first passage has an orifice, and one of the first and second passages is communicated with the first flow passage; when the heat exchange assembly is applied to a system and the system needs refrigeration, the heat exchange assembly is used as an evaporator; when the system needs to heat, the heat exchanger is used as a heat exchanger, and the heat exchange assembly has two functions.

Drawings

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

FIG. 2 is a schematic structural view of the first block shown in FIG. 1;

FIG. 3 is another view of the first block of FIG. 2;

FIG. 4 is a schematic front view of a heat exchange assembly;

FIG. 5 is a schematic cross-sectional view of a heat exchange assembly;

FIG. 6 is a schematic cross-sectional view of the expansion valve of FIG. 1;

FIG. 7 is an exploded view of the heat exchange assembly of FIG. 1;

FIG. 8 is a schematic structural view of another first block;

FIG. 9 is an exploded view of another heat exchange assembly configuration;

FIG. 10 is a schematic view, partially in section, of the heat exchange assembly of FIG. 9;

FIG. 11 is a schematic structural view of the fluid control member of FIG. 9;

FIG. 12 is a schematic view, partially in section, of the fluid control member of FIG. 11;

FIG. 13 is a schematic diagram of a partial cross-sectional configuration of the fluid control member of FIG. 11;

FIG. 14 is an exploded schematic view of another fluid control assembly;

FIG. 15 is a schematic view of the expansion valve shown in FIG. 14;

fig. 16 is a schematic cross-sectional view of the expansion valve shown in fig. 14.

Detailed Description

Referring to fig. 1, fig. 1 illustrates a structural schematic diagram of a heat exchange assembly 100, the heat exchange assembly 100 includes a heat exchange core 11 and a fluid control member 12, the fluid control member 12 is welded to the heat exchange core 11, the fluid control member 12 includes a first channel 1201 and a second channel 1202, and the first channel 1201 has a choke 123.

The heat exchange core 11 at least has a first flow channel 111 and a second flow channel 112, the first flow channel 111 is isolated from the second flow channel 112, and the first channel 1201 and the second channel 1202 are communicated with the first flow channel 111;

the heat exchange core 11 comprises a top plate, a bottom plate and a plurality of plates, wherein the plates comprise a first plate and a second plate, the first plate and the second plate are sequentially and alternately stacked to form a first flow channel 111 and a second flow channel 112, except for the two plates closest to the edge, one side of the plurality of plates is a part of the first flow channel, the other side of the plurality of plates is a part of the second flow channel, for example, one of the first plate and the two second plates adjacent to the first plate form a part of the first flow channel, the other second plate and the other second plate form a part of the second flow channel, and the first flow channel is not communicated with the second flow channel.

The heat exchange core 11 at least comprises a first hole channel 113, a second hole channel 114, a fourth hole channel and a fifth hole channel, wherein the first hole channel 113 and the second hole channel 114 are part of a first flow channel, and the fourth hole channel and the fifth hole channel are part of a second flow channel. The first flow channel comprises a first port 113, a first interplate channel between the plates and a second port 114. The second flow channel comprises a fourth porthole, a second interplate channel between the plates and a fifth porthole.

The fluid control component 12 includes a valve body block 131, a first solenoid valve spool 129, and an expansion valve 124 spool 124a, wherein the valve body block 131 includes a first block 121, a second block 122, and an expansion valve 124 valve body 124b, the first block 121 is welded and fixed to the heat exchange core 11, the first block 121 and the second block 122 are disposed in a limited manner, at least a portion of the first solenoid valve spool 129 extends into the second block 122, a portion of the first solenoid valve spool 129 is disposed in a fixed manner with the second block 122, and the expansion valve 124 is disposed in a fixed manner with the first block 121. Wherein the expansion valve spool cooperates with a valve body block, such as the valve body 124b of the expansion valve 124, to provide the orifice.

In the embodiment shown in fig. 1, the expansion valve is a thermal expansion valve, and the expansion valve 124 has a first port 1241, a second port (not shown), a fourth port (not shown), and a fifth port 1242, wherein the first port 1241 and the second port are ports of the first passage 1201, the first port 1241 and the second port are communicated with the first port passage 113, and the fourth port 1242 is communicated with the second port passage 114. The heat exchange assembly includes a second solenoid operated valve spool, at least a portion of which extends into the valve body block, such as the expansion valve 124 valve body 124 b.

The first block 121 has a first protrusion 1211 and a second protrusion 1212, the first protrusion 1211 and the second protrusion 1212 are located at different sides of the first block 121, the first protrusion 1211 is located at a side of the first block 121 where the expansion valve 124 is fitted, the second protrusion 1212 extends into the second block 122, and the second block 122 is screwed with the first block 121. At least a portion of the first solenoid valve spool 129 extends into the second block 122 and is fixedly disposed with the second block 122.

The first block 121 has a first connecting passage 1213, a second connecting passage 1214, and a third connecting passage 1215, the first block 121 has a first groove 1216 and a second groove 1217, the first connecting passage 1213 communicates with the first groove 1216, the third connecting passage 1215 communicates with the first groove 1216, the second connecting passage 1214 does not communicate with the first groove 1216 in the first block 121, the first groove 1216 communicates with the first hole 113 of the heat exchange core 11, and the second groove 1217 communicates with the second hole 114 of the heat exchange core 11.

The first block 121 is welded and fixed with the heat exchange core body 11. The first block 121 has a bottom surface 1218, the bottom surface has a first groove 1216, a second groove 1218, a third groove 1219a and a fourth groove 1219b, the third groove 1219a and the fourth groove 1219b are located at the middle position of the connecting line between the first groove 1216 and the second groove 1218, the depth of the third groove 1219a and the fourth groove 1219b is smaller than that of the first groove 1216, and the depth of the third groove 1219a and the fourth groove 1219b is smaller than that of the second groove 1218.

The first block 121 and the top plate 121a are fixed in a welding mode, the top plate 121a is provided with a first protrusion 151 and a second protrusion 152, the first protrusion 151 is matched with a third groove 1219a, the second protrusion 152 is matched with a fourth groove 1219b, the first protrusion 151 extends into the third groove 1219a, and the second protrusion 152 extends into the fourth groove 1219b, so that the first block 121 and the heat exchange core 11 are favorably prepared and positioned, and the welding quality is favorably ensured.

In the embodiment illustrated in fig. 1, the first protrusion 1211 and the second protrusion 1212 are located at different sides of the first block body 121, the third connecting channel 1215 is a straight channel, and the second protrusion 1212 is located at a top surface of the first block body 121, the top surface being opposite to the bottom surface.

The first protrusion 1211 is located at a side of the first block 121, the first connection channel 1213 is a non-linear channel, and the second connection channel 1214 is a non-linear channel.

The second block has a third port 103, the third port 103 is an inlet, and the second passage has a third port, a solenoid valve port, and a second port.

Referring to fig. 1, the heat exchange assembly 100 includes a first port, a second port, a third port, a fourth port 104 and a fifth port 105, where the first port and the second port are a first port 1241 and a fifth port 1242 of an expansion valve, the third port is a third port 103, and the fourth port 104 and the fifth port 105 are inlets and outlets of a second flow passage.

When the heat exchange assembly is applied to a system, when refrigeration is required in the system, refrigerant enters the heat exchange assembly from the first interface, enters the first groove 1216, the first pore passage 113, the second pore passage 114, the second groove 1217, the third port and the fourth port 1242, and after being throttled and depressurized by the expansion valve, the refrigerant exchanges heat with fluid entering the fourth interface 104 in the heat exchange core and then exits from the second interface. When heating is needed in the system, the expansion valve throttling channel is closed, refrigerant enters from the third port 103, the first solenoid valve spool 129 is opened, and the refrigerant enters the first groove 1216, the first port 113, the second port 114, the second groove 1217, the third port and the second port, so that the refrigerant can exchange heat with fluid entering from the fourth port. Therefore, when the system needs refrigeration, the heat exchange component is used as an evaporator; when the system needs to be heated, the system is used as a heat exchanger.

It should be understood that, as another embodiment, for example, referring to fig. 8, fig. 8 illustrates a schematic structural diagram of the first block 121 ', the first protrusion 1211 and the second protrusion 1212 may be located on the same side of the first block 121'; in another embodiment, the first protrusion and the second protrusion may be located on different sides of the first block, for example, on sides that are disposed opposite to each other.

It should be understood that the heat exchange assembly and the first block may be fixed by a screw connection. The heat exchange core body can comprise a top plate, a flow plate and an end plate, and can also comprise a pressing block or a mounting plate and other structures. For example, when the heat exchange assembly comprises a pressing block structure, the pressing block is welded and fixed with the heat exchange core body, and the first block body is fixed with the pressing block in a threaded connection mode.

Fig. 9-13 illustrate another structure of the heat exchange assembly, wherein the heat exchange assembly 200 comprises a fluid control member 12 'and a heat exchange core 11, the fluid control member 12' can be welded and fixed with the heat exchange core, the fluid control member 12 'comprises a first channel 1201' and a second channel 1202 ', and the first channel 1201' is provided with a choke 127.

The heat exchange core 11 at least has a first flow channel 111 and a second flow channel 112, the first flow channel 111 is isolated from the second flow channel 112, and the first channel 1201 'and the second channel 1202' are communicated with the first flow channel 111; the heat exchange core 11 at least comprises a first hole channel 113, a second hole channel 114, a fourth hole channel and a fifth hole channel, wherein the first hole channel 113 and the second hole channel 114 are part of a first flow channel, and the fourth hole channel and the fifth hole channel are part of a second flow channel. The first flow channel comprises a first port 113, a first interplate channel between the plates and a second port 114. The second flow channel comprises a fourth porthole, a second interplate channel between the plates and a fifth porthole.

The fluid control component 12' includes a valve body block 125, a first solenoid valve spool 129, and an expansion valve spool 126, where the valve body block 125 may be welded to the heat exchange core 11, the valve body block 125 has a first port 1251 and a second port 1252, where the second port is communicated with the first duct 113, the first port 1251 is a refrigerant inlet, and the second port 1252 is a refrigerant outlet.

In the heat exchange assembly shown in fig. 9 and 10, the expansion valve spool is an electronic expansion valve spool, the fluid control component 12' has a solenoid valve port 128, the expansion valve spool has an orifice 127, the valve body block 125 has a second passage 1253 and a first passage 1254, the second passage 1253 communicates the solenoid valve port 128 with the orifice 127, and the second passage 1253 communicates with the second port 1252. First passage 1254 communicates between first port 1251 and the inlet of expansion valve spool 126, blocking communication between first passage 1254 and second passage 1253 due to the closing of solenoid valve port 128.

The first passage 1201 'has a first port, a first passage 1254, a throttle port, a second port, and the second passage 1202' has a first port, a solenoid valve port, a second passage 1253, a second port.

The heat exchange assembly 200 includes a first interface, a second interface 102, a third interface 103, and a fourth interface 104, where the first interface is a first port 1251, and the third interface 103 and the fourth interface 104 are inlets and outlets of a second flow channel.

When the heat exchange assembly is applied to a system, when refrigeration is required in the system, the first solenoid valve spool 129 abuts against the solenoid valve port 128, when the solenoid valve is in a closed state, refrigerant enters from the first port 1251, enters the inlet of the expansion valve spool 126 along the first passage 1254, the expansion valve is in an open state at the moment, the refrigerant enters the throttle 127, then enters the first duct 113 from the second port 1252, exits from the second duct 114, exits from the second port 102, and after the refrigerant is throttled and depressurized by the expansion valve, the refrigerant exchanges heat with fluid entering from the third port 103 in the heat exchange core, and then exits from the fourth port 104. When heating is needed in the system, the expansion valve is closed, the solenoid valve port 128 is communicated with the first port 1251, refrigerant enters from the first port 1251, passes through the solenoid valve port 128, enters the second passage 1253, then enters the first port 1252, enters the first port 113, enters the second port 114, and exits from the second port 102, so that the refrigerant can exchange heat with fluid entering from the third port 103. Therefore, when the system needs refrigeration, the heat exchange component is used as an evaporator; when the system needs to be heated, the system is used as a heat exchanger.

The first port 1251 may open on a side of the valve block 125, the second port 1252 may open on a bottom of the valve block 125 that is a bottom of the valve block opposite the heat exchange core, the valve block 125 having a first mounting cavity 1255 and a second mounting cavity 1256, at least a portion of the first solenoid valve spool 126 being located in the first mounting cavity 1255, and at least a portion of the expansion valve spool 123 being located in the second mounting cavity 1256.

Second port 1252 may be aligned with first port 113 so that fluid exits the fluid control component directly into the heat exchange core.

In another embodiment, the valve body block 125 may have a communication groove, the second port may be a notch of the communication groove, and the communication groove may communicate the orifice with the first port.

It should be understood that the valve body block 125 and the heat exchange core 11 may be fixed by a screw connection. The heat exchange core body can comprise a top plate, a flow plate and an end plate, and can also comprise a pressing block or a mounting plate and other structures.

Referring to fig. 14-16, fig. 14-16 illustrate a schematic structural view of the fluid control assembly 12 ". Wherein, the heat exchange core can refer to the heat exchange core 11 in fig. 1, and the connection relationship between the fluid control assembly 12 ″ and the heat exchange core 11 can also refer to the connection relationship in fig. 1.

The fluid control component 12 ″ includes a valve body block 131, a first solenoid valve spool 129, and a valve spool 124a of the expansion valve 124 ', wherein the valve body block 131 includes a first block 121 ″ and a valve body 124 b' of the expansion valve 124 ', the first block 121 ″ is welded and fixed to the heat exchange core 11, at least a portion of the first solenoid valve spool 129 extends into the valve body 124 b' of the expansion valve 124 ', a portion of the first solenoid valve spool 129 is fixed to the valve body of the expansion valve, and a portion of the expansion valve 124' is fixed to the first block 121.

The valve body block 131 has at least a first port 1241 and a second port, the second port being in communication with the first flow passage, the first port 1241 being a fluid inlet;

the flow control member 12 "includes a first channel 1201" and a second channel 1202 "; one of the first channel and the second channel is communicated with the first flow channel; the fluid control component includes a solenoid valve port 132, the second passage 1202 "includes the solenoid valve port 132, and the first passage 1201" has an orifice 123, wherein the expansion valve spool cooperates with a valve body block, such as the valve body 124 b' of the expansion valve 124, to have the orifice.

In the embodiment shown in fig. 14, the expansion valve is a thermal expansion valve, and the expansion valve 124 has a first port 1241, a second port (not shown), a third port 103, a fourth port and a fifth port 1242, wherein the first port 1241 and the second port are ports of the first passage 1201, the first port 1241 and the second port are communicated with the first port passage 113, and the fourth port 1242 and the fifth port are communicated with the second port passage 114.

The first block 121 ″ has a first protrusion 1211, and the first protrusion 1211 is located at a side of the first block 121 where the expansion valve 124 is fitted. At least a part of the first solenoid valve spool 129 extends into the valve body of the expansion valve 124, and the part of the first solenoid valve spool 129 is fixedly disposed with the valve body of the expansion valve 124.

The first block 121 "has a first connecting passage 1213 and a second connecting passage 1214, the first block 121" has a first groove 1216 and a second groove 1217, the first connecting passage 1213 communicates with the first groove 1216, the second connecting passage 1214 does not communicate with the first groove 1216 at the first block 121 ", the first groove 1216 communicates with the first hole 113 of the heat exchange core 11, and the second groove 1217 communicates with the second hole 114 of the heat exchange core 11.

The first block 121 "and the heat exchange core 11 can be fixed in a manner as shown in fig. 7, and the first block 121" and the heat exchange core 11 are fixed by welding. The first block 121 has a bottom surface 1218, the bottom surface has a first groove 1216, a second groove 1218, a third groove 1219a and a fourth groove 1219b, the third groove 1219a and the fourth groove 1219b are located at the middle position of the connecting line between the first groove 1216 and the second groove 1218, the depth of the third groove 1219a and the fourth groove 1219b is smaller than that of the first groove 1216, and the depth of the third groove 1219a and the fourth groove 1219b is smaller than that of the second groove 1218.

The expansion valve 124 ' and the valve body 124b ' include a third connection passage 1215 ', and the third connection passage 1215 communicates with the first groove 1216.

The first solenoid spool has a first port, an orifice, a first connecting passage 1213, a second port, and the second spool has a third port, a solenoid port 132, a third connecting passage 1215', a second port. The third port 103 is a solenoid valve inlet. The heat exchange assembly comprises a first interface, a second interface, a third interface 103, a fourth interface 104 and a fifth interface 105, wherein the first interface and the second interface are a first port 1241 and a fourth port 1242 of the expansion valve, the third interface 103 is an inlet of the solenoid valve, and the fourth interface 104 and the fifth interface 105 are inlets and outlets of the second flow channel.

When the heat exchange assembly is applied to a system, when refrigeration is required in the system, refrigerant enters the heat exchange assembly from the first interface, enters the first groove 1216, the first duct 113, the second duct 114, the second groove 1217, the fourth port, and the fifth port 1242, and after being throttled and depressurized by the expansion valve, the refrigerant exchanges heat with fluid entering the fourth interface 104 in the heat exchange core and then exits from the fifth interface. When the system needs to heat, the expansion valve throttling channel is closed, refrigerant enters from the third interface, the first solenoid valve spool 129 moves, the solenoid valve port is in an open state, and the refrigerant enters the first groove 1216, the first duct 113, the second duct 114, the second groove 1217, the fourth port and the second interface and leaves, so that the refrigerant can exchange heat with fluid entering from the fourth interface. Therefore, when the system needs refrigeration, the heat exchange component is used as an evaporator; when the system needs to be heated, the system is used as a heat exchanger.

It should be noted that: the above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, such as the definition of the directionality of "front", "back", "left", "right", "up", "down", etc., although the present 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 technical solutions and modifications can be combined with each other, modified or replaced with equivalents by those skilled in the art, and all the technical solutions and modifications that do not depart from the spirit and scope of the present invention should be covered by the scope of the claims of the present invention.

Claims

1. A heat exchange assembly comprising a heat exchange core and a fluid control member, the fluid control member being secured to the heat exchange core, the heat exchange core having at least a first flow passage and a second flow passage, the first flow passage being isolated from the second flow passage, the heat exchange assembly comprising: the fluid control component includes a first channel and a second channel; one of the first channel and the second channel is communicated with the first flow channel;

2. The heat exchange assembly of claim 1, wherein: the fluid control component has a third port that is an inlet, the first passage has a first port, a restriction, a second port, and the second passage has a third port, a solenoid valve port, and a second port.

3. The heat exchange assembly of claim 2, wherein: the valve body block body is provided with a first block body, a second block body and an expansion valve body, the first block body and the second block body are fixedly arranged, part of the first channel is positioned in the first block body, part of the first channel is positioned in the expansion valve body, at least part of the valve core of the expansion valve extends into the expansion valve body, and the valve core of the expansion valve is matched with the expansion valve body and is provided with the throttling port;

the first block is provided with a first connecting channel, a second connecting channel and a third connecting channel, the first block is provided with a first groove and a second groove, the first connecting channel is communicated with the first groove, the third connecting channel is communicated with the first groove, the second connecting channel is not communicated with the first groove in the first block, the first groove is communicated with the first pore channel of the heat exchange core, and the second groove is communicated with the second pore channel of the heat exchange core;

the second block has a third port, at least a portion of the first solenoid valve spool extends into the second block, and at least a portion of the second passage is located in the first block, and at least a portion of the second passage is located in the second block.

4. A heat exchange assembly according to claim 3, wherein: the valve core of the expansion valve is a valve core of a thermostatic expansion valve, the first block is provided with a fourth port and a fifth port, and the fourth port and the fifth port are communicated with the first flow passage; the heat exchange assembly comprises a second electromagnetic valve core, and at least part of the second electromagnetic valve core extends into the first block body;

the first block is provided with a bottom surface part, the bottom surface part is provided with the first groove, the second groove, a third groove and a fourth groove, the third groove and the fourth groove are positioned in the middle of a connecting line of the first groove and the second groove, the depth of the third groove and the depth of the fourth groove are smaller than that of the first groove, and the depth of the third groove and the depth of the fourth groove are smaller than that of the second groove;

the first block body is welded and fixed with the top plate of the heat exchange core body, the top plate of the heat exchange core body is provided with a first protrusion and a second protrusion, the first protrusion is matched with the third groove, the second protrusion is matched with the fourth groove, the first protrusion extends into the third groove, and the second protrusion extends into the fourth groove.

5. The heat exchange assembly of claim 4, wherein: the valve core of the expansion valve is a valve core of a thermostatic expansion valve, the valve body block body is provided with a fourth port and a fifth port, and the fourth port and the fifth port are communicated with the first flow channel; the heat exchange assembly comprises a second electromagnetic valve core, and at least part of the second electromagnetic valve core extends into the valve body block;

the heat exchange assembly has a first working state and a second working state, in the first working state, the first electromagnetic valve spool props against the electromagnetic valve port, the first port is communicated with the throttle orifice, the second port and the first flow channel, and the heat exchange assembly is used as an evaporator; in the second working state, the second electromagnetic valve core controls to cut off the conduction between the first port and the throttle orifice, and the third port is communicated with the electromagnetic valve port, the second port and the first flow passage.

6. The heat exchange assembly of claim 1, wherein: the valve body block is provided with the first port and the second port, the valve body block is provided with a first installation cavity and a second installation cavity, at least part of the first solenoid valve spool is located in the first installation cavity, at least part of the expansion valve spool is located in the second installation cavity, the valve body block is provided with a first passage and a second passage, the second passage is communicated with the solenoid valve port and the throttle port, the second passage is communicated with the second port, the first passage is communicated with the first port and the inlet of the expansion valve spool, the first passage is provided with the first port, the first passage, the throttle port and the second port, and the second passage is provided with the first port, the solenoid valve port, the second passage and the second port.

7. The heat exchange assembly of claim 6, wherein: the heat exchange core is provided with a first hole channel and a second hole channel, the first hole channel and the second hole channel are part of the first flow channel, the second port is arranged at the bottom of the valve body block body opposite to the heat exchange core, and the second port is aligned with the first hole channel; or the valve body block is provided with a communicating groove, the second port is a notch of the communicating groove, and the communicating groove is communicated with the throttling port and the first pore passage;

the valve body block body and the heat exchange core body are welded and fixed; or the heat exchange core body comprises a pressing block, the pressing block is provided with a threaded hole, and the valve body block body is in threaded fixation with the pressing block.

8. The heat exchange assembly of claim 6 or 7, wherein: the heat exchange assembly has a first working state and a second working state, in the first working state, the first electromagnetic valve core props against the electromagnetic valve port, the first port is communicated with the first passage, the inlet of the expansion valve core, the throttle orifice, the second port and the first flow channel, and the heat exchange assembly is used as an evaporator; in the second working state, the valve core of the expansion valve controls and cuts off the conduction between the inlet of the valve core of the expansion valve and the throttling port, and the first port is communicated with the valve port of the electromagnetic valve, the second passage, the second port and the first flow passage.

9. The heat exchange assembly of claim 1 or 2, wherein: the valve body block comprises a first block body and an expansion valve body, the first block body is welded and fixed with the heat exchange core body, at least part of the valve core of the first electromagnetic valve extends into the expansion valve body, and the expansion valve body is fixedly arranged with the first block body;

at least part of the first passage is located in the expansion valve body, at least part of the first passage is located in the first block, at least part of the second passage is located in the expansion valve body, and at least part of the second passage is located in the first block.

10. The heat exchange assembly of claim 9, wherein: the first block is provided with a first connecting channel and a second connecting channel, the first block is provided with a first groove and a second groove, the first connecting channel is communicated with the first groove, the second connecting channel is not communicated with the first groove in the first block, the first groove is communicated with the first pore channel of the heat exchange core, and the second groove is communicated with the second pore channel of the heat exchange core;

the expansion valve body comprises a third connecting channel, and the third connecting channel is communicated with the first groove.