CN114608360A

CN114608360A - Heat exchanger

Info

Publication number: CN114608360A
Application number: CN202011413659.1A
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: 2020-12-03
Filing date: 2020-12-03
Publication date: 2022-06-10

Abstract

The invention discloses a heat exchanger, which comprises a first heat exchange part and a second heat exchange part, wherein the first heat exchange part comprises a first plate, and the second heat exchange part comprises a second plate; the two heat exchange parts respectively comprise two fluid flow channels, and heat exchange can be carried out between the two fluid flow channels; the two heat exchange parts respectively comprise four pore channels; the first plate comprises a first hole which is communicated with a second pore canal of a refrigerant channel of the first heat exchanging part, and the second plate comprises a second hole which is communicated with one pore canal of the second heat exchanging part; the second hole is communicated with the first hole, the heat exchangers are fixed into a whole through welding, the arrangement of pipelines can be reduced, one heat exchanger is provided with two heat exchanging parts, and system connection and application are relatively simple and convenient.

Description

Heat exchanger

Technical Field

The invention relates to the field of fluid control, in particular to a heat exchanger.

Background

Some thermal management systems include at least two heat exchangers, such as a plate evaporator, and these heat exchangers and components are generally connected by pipelines and are fixedly arranged in the system application.

Disclosure of Invention

In order to provide a new heat exchanger, the heat exchanger includes two heat exchanging parts, two heat exchanging parts can have different functions respectively, and the volume is relatively small, the assembly is convenient, at the same time, provide a heat exchanging assembly which is relatively simple to connect when installing and using in the system, the invention provides the following technical scheme:

a heat exchanger comprises a first heat exchanging part and a second heat exchanging part, wherein the first heat exchanging part comprises a first plate, the second heat exchanging part comprises a second plate, the first plate is relatively close to the second heat exchanging part or the first plate is attached to the second heat exchanging part, and the second plate is relatively close to the first heat exchanging part or the second plate is attached to the first heat exchanging part; the second heat exchange part comprises two fluid flow channels, and heat exchange can be carried out between the two fluid flow channels; the first heat exchange part comprises two fluid flow channels which are not communicated, heat exchange can be carried out between the two fluid flow channels, and the two fluid flow channels comprise a refrigerant flow channel and a cooling liquid flow channel; the second heat exchange part comprises two fluid flow channels, and heat exchange can be carried out between the two fluid flow channels; the refrigerant flow channel of the first heat exchanging part comprises a first pore channel and a second pore channel, the refrigerant flow channel of the first heat exchanging part comprises a third pore channel and a fourth pore channel, and the second heat exchanging part comprises four pore channels: a first duct, a second duct, a third duct, and a fourth duct; the first plate comprises a first hole which is communicated with a second pore canal of the first heat exchanging part, and the second plate comprises a second hole which is communicated with one pore canal of the second heat exchanging part; the second hole is communicated with the first hole, and the heat exchanger is fixed into a whole through welding.

The heat exchanger includes two heat transfer portions, make two heat transfer portions of different functions can form the structure of integration through the welding, realize the fluidic circulation of two heat transfer portions through setting up of first board and second board between two heat transfer portions, make a pore of first heat transfer portion communicate a pore of second heat transfer portion, and through the setting of two boards, the position that makes the heat exchanger with external connection's interface sets up convenience relatively, can adjust according to system's needs, two heat transfer portions relatively respectively with the external connection, can reduce relatively and outer interface equipment is convenient relatively, the structure of heat exchanger can be less relatively.

Drawings

FIG. 1 is a schematic perspective view of one embodiment of a heat exchange assembly provided by the present invention;

FIG. 2 is a front view of the heat exchange assembly;

FIG. 3 is a schematic view in section along the line A-A of the heat exchange assembly of FIG. 2;

FIG. 4 is a schematic view in section B-B of the heat exchange assembly of FIG. 3;

FIG. 5 is an exploded view of the heat exchange assembly;

FIG. 6 is a schematic perspective view of a second embodiment of a heat exchange assembly provided by the present invention;

FIG. 7 is an exploded view of a second embodiment of a heat exchange assembly;

FIG. 8 is an exploded schematic view of another version of the heat exchanger of the second embodiment of the heat exchange assembly;

FIG. 9 is a schematic view of a third embodiment of a heat exchange assembly;

FIG. 10 is a schematic view in section in the direction C-C of the heat exchange assembly of FIG. 9;

FIG. 11 is a schematic view in section D-D of the heat exchange assembly of FIG. 10;

FIG. 12 is an exploded view of the heat exchange assembly of FIG. 9;

FIG. 13 is an exploded schematic view of the heat exchanger of the heat exchange assembly of FIG. 12;

FIG. 14 is a schematic perspective view of a fourth embodiment of a heat exchange assembly;

FIG. 15 is a schematic cross-sectional view of the heat exchange assembly of FIG. 14;

FIG. 16 is an exploded view of the heat exchange assembly of FIG. 14;

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

FIG. 18 is an exploded view of the heat exchange assembly of FIG. 17;

FIG. 19 is a schematic cross-sectional view of a sixth embodiment of a heat exchange assembly.

In the figure: 10 heat exchanger, 11b, 11d first plate, 110 main plate face, 111 first hole, 112 third hole;

12. 12b, 12d second plate, 120 main plate face, 121 second hole, 122 fourth hole;

13. 13d first plate, 131 first mating portion, 132 second mating portion, 133 third mating portion, 134 fourth mating portion, 135 relief portion, 137 first hole, 138 third hole;

14. 14a mounting plate, 140 mounting holes, 141 first through holes, 142 plate-like portions, 143 mounting portions, 144 second through holes,

15. 15a, 15b, 15c, 15d, 15e first heat exchanging portion, 151 first port, 152 second port, 153 third port, 154 fourth port, 156 first end plate,

16. 16a, 16b, 16c, 16d a second heat exchanging portion, 161 a first port, 162 a second port, 163 a third port, 164 a fourth port; 166 a second end plate of the second set of plates,

17. 17d second plate, 171 first mating portion, 172 second mating portion, 173 third mating portion, 174 fourth mating portion, 175 relief, 177 second hole, 178 fourth hole;

20. 20a and 20b throttling elements, 201 interfaces, 21a and 21b connecting pipes, 210 inner holes and 211 external protrusions;

31 a sensing element, 41 a first coolant port, 42 a second coolant port, 43 a first port, 44 a second port, 45 a third port, 46 a fourth port, 47 a sensing element connection, 51 a first coolant port, 52 a second coolant port, 53 a first port, 54 a second port, 55 a third port, 56 a fourth port.

Detailed Description

The technical solution is described below with reference to specific embodiments, and referring to fig. 1 to 5, fig. 1 is a schematic perspective view of an embodiment of a heat exchange assembly provided by the present invention, fig. 2 is a front view of the heat exchange assembly, fig. 3 is a schematic sectional view of the heat exchange assembly in a direction a-a shown in fig. 2, fig. 4 is a schematic sectional view of the heat exchange assembly in a direction B-B shown in fig. 3, fig. 5 is an exploded schematic view of the heat exchange assembly, which illustrates an internal structure relatively more clearly, the exploded schematic view illustrates two directions, so that the detachment mainly illustrates the structure of the heat exchange assembly, and the plates of the two heat exchange portions are not detached.

The heat exchange assembly comprises a heat exchanger 10, a throttling element 20 and a connecting piece. The heat exchanger 10 includes a first heat exchanging portion 15, a second heat exchanging portion 16, and a mounting plate 14, the mounting plate 14 includes a plate portion 142 and a mounting portion 143, and the mounting plate 14 of this embodiment is an integral structure and may be formed by punching or flanging a plate material. The plate-shaped portion 142 of the mounting plate 14 is mostly located between the first heat exchanging portion 15 and the second heat exchanging portion 16, the mounting portion 143 has the mounting hole 140, and the mounting portion 143 is used to fix the heat exchanger to other components. The heat exchanger 10 comprises a first end plate 156 and a second end plate 166, the first end plate 156 and the second end plate 166 are positioned at two opposite sides of the heat exchanger, the first heat exchanging part 15 comprises a first plate 11 and the first end plate 156, and the second heat exchanging part 16 comprises a second plate 12 and the second end plate 166. In this embodiment, the first plate 11 is relatively close to the second heat exchanging portion or a portion thereof and is attached to the mounting plate, the second plate 12 is relatively close to the first heat exchanging portion or a portion thereof and is attached to the mounting plate, and the first heat exchanging portion 15, the second heat exchanging portion 16 and the mounting plate 14 are fixed together by welding. The integral structure herein also includes a case where the integral structure is fixed integrally by welding or the like.

The first heat exchanging part 15 is provided with a heat exchanging core body, the first heat exchanging part 15 is provided with two fluid flow channels for fluid to flow through for mutual heat exchange, the two fluid flow channels are separated, the first heat exchanging part 15 comprises a plurality of plate sheets, and the first heat exchanging part 15 can also comprise fins for facilitating heat exchange; the first heat exchanging portion 15 has interlayer flow channels separated by stacking plates, and at least two fluids can flow through the first heat exchanging portion 15, and the two fluids can exchange heat in the first heat exchanging portion 15, for example, one fluid is a cooling medium, and the other fluid can be a cooling liquid, and the cooling liquid is used for cooling heat generating elements such as batteries; in addition, the cooling device can also be used for three fluids, for example, one fluid is a refrigerant, the other two fluids can be cooling liquid, the two cooling liquids can exchange heat with the refrigerant through control selection, and then the cooling liquid can be used for cooling parts needing cooling after heat exchange and temperature reduction. The first heat exchanging portion 15 may have only one fluid passage and two ports: the first and

second ports

151 and 152 are only connected to the refrigerant channel, and are in contact with other elements or media requiring heat exchange for heat exchange. The second heat exchanging portion 16 has a heat exchanging core. The second heat exchanging portion 16 includes plates, the second heat exchanging portion 16 has two fluid flow channels through which fluid flows for heat exchange, the two fluid flow channels are separated by plate stacking and can exchange heat, the second heat exchanging portion 16 includes interlayer flow channels separated by plate stacking, the second heat exchanging portion 16 can flow at least two fluids, and the two fluids can exchange heat in the second heat exchanging portion 16, if the two fluids are refrigerants: one fluid is a relatively high temperature refrigerant and the other is a relatively low temperature refrigerant, or one fluid is a refrigerant and the other may be a cooling fluid, such as a cooling fluid for cooling a heat generating element such as a battery. The second heat exchanging portion 16 has four ports: a first orifice 161, a second orifice 162, a third orifice 163, and a fourth orifice 164.

The first plate 11 can be made of the same material as the plate of the first heat exchanging part, the plate structure of the first plate 11 is different from that of the first heat exchanging part, and one side of the first plate 11 is matched with the mounting plate. The first plate 11 is provided with a flanging portion 119 which is flanged towards the left side in the throttling element direction, the first plate 11 is provided with a main plate surface 110, the main plate surface 110 can also be provided with at least two matching portions, and the matching portions can be inwards concave towards the first heat exchange portions and are welded with the matching portions of the adjacent plates in a matching mode. The main plate surface is fitted to the plate-shaped portion 142 of the mounting plate 14, and the main plate surface 110 is provided with a first hole 111. The first hole 111 is communicated with the second duct 152 of the first heat exchanging portion, or the first hole 111 is a part of the second duct 152 constituting the first heat exchanging portion, the position of the second duct corresponds to the position of the first hole, and the periphery of the first hole of the first plate is a part of the second duct forming the first heat exchanging portion.

The second plate 12 may be formed of the same material as the plate of the second heat exchanging portion, the second plate 12 may have a flange portion 129 that is flanged to the right side, i.e., the connector direction, around the periphery thereof, the second plate 12 may have a main plate surface 120 that is fitted to a portion of the plate portion 142 of the mounting plate 14 facing the second heat exchanging portion, and the main plate surface 120 may have a second hole 121. Accordingly, the mounting plate is provided with a first through hole 141 at a position corresponding to the first through hole 111, the second plate 12 is provided with a second through hole 121 at a position corresponding to the first through hole 141, and the positions of the first through hole 111, the second through hole 121 and the first through hole 141 are substantially corresponding to each other. The plate materials of the first heat exchanging part and the second heat exchanging part can be the same or different. The first plate 11 may further have a matching portion, for example, the matching portion is recessed in the corresponding hole, and the matching portion is used for matching and welding with the plate sheet adjacent to the first plate 11 in the first heat exchanging portion to achieve sealing, for example, the matching portion is slightly concave toward the inside of the first heat exchanging portion and matches with the convex portion of the plate sheet adjacent to the first plate 11 in the first heat exchanging portion. The second plate is also similar. The second hole 121 is communicated with the second duct 162 of the second heat exchanging portion, or the second hole 121 is a part of the second duct 162 constituting the second heat exchanging portion; the position of the second duct of the second heat exchanging part corresponds to the position of the second hole or the periphery of the second hole of the second plate is a component forming the second duct of the second heat exchanging part. The second hole channel of the second heat exchanging part is communicated with the second hole channel of the first heat exchanging part through the first hole of the first plate, the first through hole of the mounting plate and the second hole of the second plate, wherein the second hole channel of the second heat exchanging part is communicated with the second hole channel of the first heat exchanging part through the first hole of the first plate, the first through hole of the mounting plate and the second hole of the second plate, the condition that the periphery of one of the first hole or the second hole passes through the first through hole to be communicated with the other hole is also included, the condition that the periphery of the first through hole passes through one of the first hole or the second hole is also included, for example, the periphery of one of the first hole or the second hole is provided with a flanging, or the first through hole is provided with a flanging, and the flanging passes through the direct communication condition.

The connector comprises a first interface part 43, a second interface part 44, a third interface part 45 and a fourth interface part 46, wherein the first interface part 43 is provided with a first interface 53, the second interface part 44 is provided with a second interface 54, the third interface part 45 is provided with a third interface 55, and the fourth interface part 46 is provided with a fourth interface 56. The interface parts of the embodiment are separately arranged, and each interface part is fixed with the heat exchanger, such as by welding; the four connecting parts can also be integrated, namely, the four connecting parts are of an integral structure and are fixed with the second heat exchange part of the heat exchanger. In this embodiment, the first interface 53 is communicated with the fourth duct 164 of the second heat exchanging portion, the second interface 54 is communicated with the third duct 163 of the second heat exchanging portion, the third interface 55 is communicated with the first duct 161 of the second heat exchanging portion, and the fourth interface 56 is communicated with the second duct 162 of the second heat exchanging portion.

The heat exchange assembly further comprises a first cooling liquid interface part 41 and a second cooling liquid interface part 42, the first cooling liquid interface part is provided with a first cooling liquid interface 51, the second cooling liquid interface part is provided with a second cooling liquid interface 52, the two cooling liquid interface parts are fixedly connected with the first heat exchange part of the heat exchanger, the first cooling liquid interface part 51 is communicated with a fourth hole 154 of the first heat exchange part, and the second cooling liquid interface part 52 is communicated with a third hole 153 of the first heat exchange part. The throttling element 20 may be an electronic expansion valve, the throttling element 20 has a port 201, which may be communicated with a pipeline of the system, in this embodiment, the port serves as a refrigerant inlet, and another port or an outlet of the throttling element 20 is communicated with the first hole 151 of the first heat exchanging part.

In a specific air conditioning system of an automobile, a part of the refrigerant with high temperature and high pressure may flow into the fourth channel 164 of the second heat exchanging part 16 from the first joint 53, and then, the refrigerant with relatively low temperature in the other fluid channel exchanges heat in the second heat exchanging part 16, and then, the refrigerant may flow into the evaporator of the system through the second joint 54 or the evaporator of the system through the throttling element in the third channel 163, and the refrigerant evaporated in the evaporator may flow into the second channel 162 of the second heat exchanging part 16 through the fourth joint 56, join with the refrigerant from the first heat exchanging part, flow into the first channel 161, and exchange heat with the refrigerant with relatively high temperature in the other fluid channel; the refrigerant in the first channel 161 flows to the compressor through the third port 55, but may also flow to the compressor through a gas-liquid separator and the like.

The other part of the high-temperature and high-pressure refrigerant passes through the joint 201 of the throttling element, is throttled to the first duct 151 of the first heat exchanging part, flows from the first duct 151 to the second duct 152, exchanges heat with a medium of another fluid flow channel, such as cooling liquid, passes through the first through hole 141 of the mounting plate from the second duct 152 to the second duct 162 of the second heat exchanging part, joins with the refrigerant from the fourth joint 56, flows to the first duct 161, and exchanges heat with the relatively high-temperature refrigerant of the other fluid flow channel; the refrigerant in the first channel 161 flows back to the compressor through the fourth port 56, or flows back to the compressor through the vapor-liquid separator and the like. Here, the port 201 serves as an inlet of the throttling element, and a place where the other side of the valve port communicates with the first orifice serves as an outlet of the throttling element, that is, the throttling element has two ports, and the ports of the throttling element in this document refer to spaces corresponding to the ports before and after throttling respectively.

The two heat exchanging parts of the heat heater, the mounting plate, the plurality of connecting parts of the connecting piece and the two cooling liquid connecting parts can be assembled together and formed by welding processing at one time, for example, the welding is completed by furnace welding or vacuum box protection welding, and the like, and specifically, the welding can be performed by reducing gas protection or vacuum protection. In the scheme, the heat exchanger is of an integrated structure formed by welding two heat exchange parts with different functions, the two heat exchange parts are conveniently matched, installed and fixed through the installation plate, the structure of the heat exchanger can be relatively small, and the installation space required by a system can be relatively reduced.

The heat exchange assembly can be fixed with the system through a connecting piece and the like without arranging a mounting plate. As shown in fig. 6 to 8, fig. 6 is a perspective view of a second embodiment of a heat exchange assembly, fig. 7 is an exploded view of the heat exchange assembly, and fig. 8 is an exploded view of another mode of a heat exchanger of the heat exchange assembly. The heat exchange assembly comprises a heat exchanger 10, a throttling element 20 and a connecting piece. The heat exchanger 10 includes a first heat exchanging portion 15a and a second heat exchanging portion 16 a. The heat exchanger 10 comprises a first end plate 156 and a second end plate 166, the first end plate 156 and the second end plate 166 are located on two opposite sides of the heat exchanger, the first heat exchanging part 15a comprises a first plate 13 and the first end plate 156, and the second heat exchanging part 16a comprises a second plate 17 and the second end plate 166. In the present embodiment, in order to improve the heat exchange efficiency, a plurality of concave-convex structures are provided on the plate surface, for example, concave-convex portions are provided on the surface of the plate pieces of the first heat exchanging portion, concave-convex portions 135 are provided on the first plate 13, concave-convex portions are provided on the surface of the plate pieces of the second heat exchanging portion, and concave-convex portions 175 are provided on the second plate 17. The first plate 13 is in contact with the second heat exchanging portion or is adjacent to and partially attached to the second plate of the second heat exchanging portion, the second plate 17 is in contact with the first heat exchanging portion or is partially adjacent to and partially attached to the first plate of the first heat exchanging portion, and the first heat exchanging portion 15a and the second heat exchanging portion 16a are fixed into a whole by welding.

The first heat exchanging part 15a has a heat exchanging core body, the first heat exchanging part 15a has two fluid flow channels through which fluids can exchange heat with each other, the two fluid flow channels are separated from each other, and the first heat exchanging part 15a includes a plurality of plates; the first heat exchanging portion 15a has interlayer flow channels separated by stacking plates, and two fluids can flow through the first heat exchanging portion 15a, and the two fluids can exchange heat in the first heat exchanging portion 15a, for example, one fluid may be a cooling medium, and the other fluid may be a cooling liquid, and the cooling liquid is used for cooling heat generating elements such as batteries; in addition, the cooling device can also be used for three fluids, for example, one fluid is a refrigerant, the other two fluids can be cooling liquid, the two cooling liquids can exchange heat with the refrigerant through control selection, and then the cooling liquid can be used for cooling parts needing cooling after heat exchange and temperature reduction. The first heat exchanging portion 15a may have only one fluid passage and two channels: the first and

second ports

151 and 152 are only connected to the refrigerant channel, and are in contact with other elements or media requiring heat exchange for heat exchange. The second heat exchanging portion 16a has a heat exchanging core. The second heat exchanging portion 16a includes plates, the second heat exchanging portion 16a has two fluid flow channels through which fluid flows for heat exchange, the two fluid flow channels are separated by plate lamination and can perform heat exchange, the second heat exchanging portion 16a includes interlayer flow channels separated by plate lamination, the second heat exchanging portion 16 can flow two fluids, the two fluids can perform heat exchange in the second heat exchanging portion 16, and the two fluids may be different or the same, such as a refrigerant: one is a relatively high temperature refrigerant, the other is a relatively low temperature refrigerant, or one fluid is a refrigerant and the other may be a coolant, such as a coolant used to cool a heat generating component such as a battery. The second heat exchanging portion 16a has four ports: a first orifice 161, a second orifice 162, a third orifice 163, and a fourth orifice 164.

The first plate 13 may be made of the same material as the plate of the first heat exchanging part, and the first plate 13 has a similar structure to the plate of the first heat exchanging part, but has different locations where the holes are arranged: the first plate 13 of the present embodiment includes 4 fitting portions: the heat exchanger comprises a first matching part 131, a second matching part 132, a third matching part 133 and a fourth matching part 134, wherein the first matching part 131 and the second matching part 132 are concave towards the first heat exchanging part, and the third matching part 133 and the fourth matching part 134 are convex. On the contrary, the second plate 17 may be made of the same material as the plate of the second heat exchanging portion, and the plates of the two heat exchanging portions may be made of the same material; the second plate 17 has a similar plate structure to that of the second heat exchanging part, and is different in the position where the pore passage is arranged; the second plate 17 may likewise comprise 4 mating portions: the first mating portion 171, the second mating portion 172, the third mating portion 173, and the fourth mating portion 174 of the second plate of the present embodiment are recessed toward the second heat exchanging portion, and the third mating portion 173 and the fourth mating portion 174 are protruded outward. The first plate 13 is provided with a first hole 137 at the second fitting portion 132, and the second plate 17 is provided with a second hole 177 at the second fitting portion 172, as shown in fig. 7, the first hole 137 and the second hole 177 are provided correspondingly and communicate with each other. The first matching part of the first plate 13 is arranged opposite to the first matching part of the second plate 17, the second matching part of the first plate 13 is arranged opposite to the second matching part of the second plate 17, the third matching part of the first plate 13 is arranged opposite to the third matching part of the second plate 17, and the fourth matching part of the first plate 13 is arranged opposite to the fourth matching part of the second plate 17; the first plate 13 is not provided with a through hole at the first matching part, at least one of the third matching part of the first plate 13 and the third matching part of the second plate 17 is not provided with a through hole, at least one of the fourth matching part of the first plate 13 and the fourth matching part of the second plate 17 is not provided with a through hole, the third matching part of the first plate 13 and the third matching part of the second plate 17 are matched, welded and sealed, and the fourth matching part of the first plate 13 and the fourth matching part of the second plate 17 are matched, welded and sealed, so that even if one of the two plates is provided with a through hole, the two plates cannot be conducted through the through hole of the matching part. The first mating portion 171 of the second plate 17 is spaced apart from the first mating portion of the first plate, the second mating portion 172 of the second plate 17 is spaced apart from the second mating portion of the first plate, and the second plate 17 may be provided with a second hole in one of the first mating portion 171 or the second mating portion. When the second hole is formed in the first fitting portion 171, the refrigerant from the first heat exchanging portion passes through the space between the first plate and the second hole 177 to the first duct 161 of the second heat exchanging portion, as shown in fig. 8, and this portion of refrigerant basically does not participate in the heat exchange of the second heat exchanging portion, joins the refrigerant that has undergone the heat exchange and flows out through the third port 55 with the refrigerant that has passed through the heat exchange and passed through the fourth port 56; when the second hole is formed in the second engaging portion 172, the refrigerant flowing from the first heat exchanging portion passes through the second hole 177 to the second port 162 of the second heat exchanging portion, and then is merged with the refrigerant flowing from the fourth port 56 to participate in heat exchange in the second heat exchanging portion, and the heat-exchanged refrigerant flows into the first port 161 and flows out through the third port 55, as shown in fig. 7. The second hole is provided in the second engaging portion as an example.

The first plate is provided with a flanging part 139 flanging towards the left side at the periphery, the second plate is provided with a flanging part 179 flanging towards the first heat exchange part at the periphery, the plate sheets of the heat exchanger are the same with the flanging directions of the first plate and the second plate, the two heat exchange parts are basically not different from each other from the appearance, and only the structure of two plates in the heat exchanger is different from the structures of other plate sheets, so that the processing is relatively convenient. The concave-convex directions of the engaging portions of the first plate 13 and the second plate 17 may be similar to those of the other plates. Similarly, the first hole 137 is communicated with the second duct 152 of the first heat exchanging portion, or the first hole 137 is a part of the second duct 152 constituting the first heat exchanging portion. The second hole 177 is communicated with the second duct 162 of the second heat exchanging portion, or the second hole 177 is a part of the second duct 162 constituting the second heat exchanging portion, and the second duct 162 is corresponding to and communicated with the second hole 177, or the periphery of the second hole is a part forming the second duct. The position of the second hole corresponds to the position of the first hole. Positional correspondence herein refers to extending in the axial direction and generally belonging to the same corresponding position, but is not limited to size. Therefore, the second hole channel of the second heat exchanging part is communicated with the second hole channel of the first heat exchanging part through the first hole of the first plate and the second hole of the second plate, wherein the second hole channel of the second heat exchanging part is communicated with the second hole channel of the first heat exchanging part through the first hole and the second hole, and the condition that one of the first hole and the second hole is directly communicated with the hole channel of the other heat exchanging part after crossing the other hole is also included, for example, a flanging is arranged on the periphery of one of the first hole and the second hole, and the flanging passes through the other hole.

The connector of this embodiment can be referred to the first embodiment above, and both are the same and will not be repeated here. The four interface parts may be integrated, or combined two by two, or combined three into one. The heat exchange assembly also comprises a first cooling liquid interface part 41 and a second cooling liquid interface part 42, the first cooling liquid interface part is provided with a first cooling liquid interface 51, the second cooling liquid interface part is provided with a second cooling liquid interface 52, the two cooling liquid interface parts are fixedly connected with the first heat exchange part of the heat exchanger, the first cooling liquid interface 51 is communicated with a fourth hole 154 of the first heat exchange part, and the second cooling liquid interface 52 is communicated with a third hole 153 of the first heat exchange part. The throttling element 20 may be an electronic expansion valve, the throttling element 20 has a port 201, which may be communicated with a pipeline of the system, in this embodiment, the port serves as a refrigerant inlet, and another port or an outlet of the throttling element 20 is communicated with the first duct 151 of the first heat exchanging portion.

In this embodiment, the direction of the flanges of the plates of the two heat exchanging portions is the same, and one hole of the two heat exchanging portions is opposite to and communicated with one hole of the other heat exchanging portion, so that the refrigerant can realize the communication between the two heat exchanging portions. It can also be said that one heat exchanger integrates the functions of two heat exchangers.

In a specific air conditioning system of an automobile, a part of the refrigerant with high temperature and high pressure may flow into the fourth channel 164 of the second heat exchanging part 16 from the first joint 53, and then, the refrigerant with relatively low temperature in the other fluid channel exchanges heat in the second heat exchanging part 16, and then, the refrigerant may flow into the evaporator of the system through the third joint 55 or the evaporator of the system through the throttling element in the third channel 163, and the refrigerant evaporated in the evaporator may flow into the second channel 162 of the second heat exchanging part 16 through the fourth joint 56, join with the refrigerant from the first heat exchanging part, flow into the first channel 161, and exchange heat with the refrigerant with relatively high temperature in the other fluid channel; the refrigerant in the first channel 161 flows to the compressor through the third port 55, but may also flow to the compressor through a gas-liquid separator and the like.

The other part of the high-temperature and high-pressure refrigerant passes through the joint 201 of the throttling element, is throttled by the throttling element 20, then flows to the first duct 151 of the first heat exchanging part, flows from the first duct 151 to the second duct 152, exchanges heat with a medium such as cooling liquid of another fluid flow channel, flows from the second duct 152 to the first hole 137 of the first plate 13, passes through the second hole 177 of the second plate of the second heat exchanging part to the second duct 162, joins with the refrigerant from the fourth joint 56, flows to the first duct 161, and exchanges heat with the relatively high-temperature refrigerant of the other fluid flow channel; the refrigerant in the first channel 161 flows back to the compressor through the third port 55, but may also flow back to the compressor through a vapor-liquid separator or the like. In this embodiment, the relatively low-temperature refrigerant exchanges heat with the high-temperature refrigerant in the second heat exchanging portion, or exchanges heat with the high-temperature refrigerant in part, that is, the second hole is only required to be disposed at the first matching portion 171, or disposed at a position corresponding to the first hole, so that the low-temperature refrigerant coming from the first heat exchanging portion basically participates in the heat exchange with the high-temperature refrigerant. In the present embodiment, though the third fitting portion 173 and the fourth fitting portion 174 are provided with through holes, the third fitting portion 133 of the first plate is fitted to the third fitting portion 173 of the second plate and welded and sealed, so that the refrigerant does not flow from the through holes to the space between the first plate and the second plate, the fourth fitting portion 134 of the first plate is fitted to the fourth fitting portion 174 of the second plate and welded and sealed, and the refrigerant does not flow from the through holes to the space between the first plate and the second plate.

The heat exchange assembly may be used in a thermal management system for a vehicle, the thermal management system comprising a compressor, a heat exchange assembly, a condenser, at least one evaporator, the heat management system comprises a refrigerant system and a cooling liquid system, wherein a medium flowing in the refrigerant system is a refrigerant, a medium flowing in the cooling liquid system is a cooling liquid, a first cooling liquid interface 51 and a second cooling liquid interface 52 are communicated through a fluid flow channel of the first heat exchanging part, namely a cooling liquid flow channel, the first cooling liquid interface 41 and the second cooling liquid interface 42 can be parts of a first end plate 156 of the first heat exchanging part, can also be separately processed and fixed with the first end plate and/or a heat exchanging core body of the first heat exchanging part through welding, and the first cooling liquid interface and the second cooling liquid interface can also be welded and fixed with the first heat exchanging part in a pipe connector mode. The coolant channel of the first heat exchanging part comprises a first pore canal and a second pore canal, and the coolant channel is not communicated with the coolant channel. The heat exchange assembly enables the heat management system to be convenient to install and connect, connected pipelines are reduced, and the size of the system is reduced.

The refrigerant channel of the first heat exchanging part of the heat exchanging assembly may be a single flow, i.e., flowing from the first port 151 to the second port 152, or a three-flow or even five-flow, for example, in the case of a three-flow, the first heat exchanging part is roughly divided into three parts, the first port 151 is divided into a first part close to the throttling element and a second part relatively close to the second heat exchanging part, and the second part of the first port 151 is longer than the first part; the second port 152 divides into a first portion near the throttling element and a second portion relatively near the second heat exchanging portion, the second portion of the second port 152 being shorter than the first portion; the first flow path flows from the first portion of the first duct 151 to the first portion of the second duct 152, then flows from the first portion of the second duct 152 relatively close to the middle portion to the second portion of the first duct, and then flows from the second portion of the first duct 151 relatively close to the second heat exchanging portion to the second portion of the second duct 152, so that the above embodiment only describes the flow from the second duct 152, and the internal flow manner is not shown.

The heat exchange assembly is illustrated for use in a vehicle thermal management system. In a specific air conditioning system of a vehicle, the first interface 43 may be connected to an outlet portion of a condenser, or the first interface 43 may be connected to an outlet portion of a compressor; the third port 45 may be connected to an inlet portion of the compressor or a vapor-liquid separator, the third port 55 may be in communication with a return port of the compressor or an inlet of the vapor-liquid separator, the second port 44 may be connected to an inlet portion of the evaporator or to an inlet portion of the evaporator via a pipe or the like, the second port 54 may be in communication with an evaporator or a throttling element or the like of the system, the fourth port 46 may be connected to an outlet portion of the evaporator via a pipe or the like, and the fourth port 56 may be in communication with an outlet portion of the evaporator of the system. When the system is in operation, taking refrigeration as an example, a high-temperature and high-pressure refrigerant from the compressor passes through the condenser, flows into the fourth channel 164 of the second heat exchanging part from the first connector 53, flows to the third channel 163, exchanges heat with a relatively low-temperature refrigerant in another fluid channel in the second heat exchanging part 16, flows to the evaporator of the system through the second connector 54 or flows to the evaporator of the system through a throttling element or the like, or is divided into two evaporators after being throttled, flows to the first channel 161 from the fourth connector 56 to the second channel 162 of the second heat exchanging part 16 through the fourth connector 56, and exchanges heat with a relatively high-temperature refrigerant in another fluid channel; another part of the refrigerant flows through the condenser from the interface 201 of the evaporator to the throttling element 20, is throttled by the throttling element 20 and then flows to the first duct 151 of the first heat exchanging part, flows to the part of the first duct 151 relatively close to the throttling element side in multiple flows, exchanges heat with a medium such as a cooling liquid in another fluid flow passage in the first heat exchanging part 15, completes heat exchange to the second duct 152 of the first heat exchanging part, flows to the second duct 162 of the second heat exchanging part through the first hole of the first plate and the second hole of the second plate, joins the refrigerant returning from the fourth interface 56, flows to the first duct 161, exchanges heat with the refrigerant in another fluid flow passage, flows out through the third interface 55 communicated with the first duct 161 and flows to the compressor, and naturally, can also return to the compressor through parts such as a vapor-liquid separator and the like. The low-temperature refrigerants at the two positions are merged and then exchange heat with the relatively high-temperature refrigerant. In addition, a part of the heat exchange component may exchange heat with a refrigerant with a relatively high temperature, and the other part of the heat exchange component directly flows out through the first pore passage, as shown in the heat exchanger of fig. 8.

In the heat exchanger shown in fig. 8, the second hole of the second plate is not disposed opposite to the first hole of the first plate, that is, the second hole and the first hole are disposed in a staggered manner, so that the two holes are communicated with each other through the space between the second plate and the first plate, and thus, the arrangement of several interfaces of the heat exchanger is relatively free, that is, the corresponding positions of the interfaces can be freely arranged according to the system requirements, and the connection with the system is facilitated. The position of the periphery of the second hole of the second plate is a certain distance away from the first plate, and the position of the periphery of the first hole of the first plate is a certain distance away from the second plate.

A detection element 31, such as a temperature sensing element or a pressure sensing element, may be further disposed in the first heat exchanging portion to better control the throttling element, so that the system efficiency is relatively high, as shown in fig. 9-13, fig. 9 is a schematic diagram of a third embodiment of the heat exchanging assembly, fig. 10 is a schematic diagram of a cross section in a C-C direction of the heat exchanging assembly, fig. 11 is a schematic diagram of a cross section in a D-D direction of the heat exchanging assembly, fig. 12 is an exploded schematic diagram of the heat exchanging assembly, and fig. 13 is an exploded schematic diagram of a heat exchanger of the heat exchanging assembly. The heat exchanger 10 comprises a first end plate 156 and a second end plate 166, the first end plate 156 and the second end plate 166 are positioned on two opposite sides of the heat exchanger, the first heat exchanging part 15 comprises a first plate 11 and the first end plate 156, and the second heat exchanging part 16 comprises a second plate 12 and the second end plate 166; the heat exchange assembly further includes a detection element connecting portion 47, the detection element connecting portion 47 is fixed to the first heat exchange portion, for example, by welding, or may be a part of a first end plate 156 of the first heat exchange portion, and the position of the detection element connecting portion corresponds to the second duct 152 of the first heat exchange portion, the detection element 31 is fixed or limited to the heat exchanger through the detection element connecting portion 47, the detection end of the detection element 31 can be located in the second duct 152 of the first heat exchange portion, when the first heat exchange portion is a multi-flow portion, the detection end of the detection element 31 is located at a position, which is relatively close to the outlet end of the second duct 152 of the first heat exchange portion, that is, relatively close to the first plate 13, that is, the detection end of the detection element 31 is located at a position of the second duct 152 after the refrigerant is subjected to multi-flow heat exchange.

The heat exchange assembly is not provided with a mounting plate separately, and the heat exchanger 10 includes a first heat exchange portion 15c, a second heat exchange portion 16c, and the second heat exchange portion 16c is substantially the same as the second heat exchange portion of the second embodiment. The first heat exchanging portion 15c includes the first plate 13, and the second heat exchanging portion 16c includes the second plate 17. In order to improve the heat exchange efficiency, a plurality of concave-convex parts are arranged on the plate surface. The first plate 13 is adjacent to and partially attached to the second plate of the second heat exchanging portion, the second plate 17 is in contact with the first heat exchanging portion or partially attached to and partially attached to the first plate of the first heat exchanging portion, and the first heat exchanging portion 15c and the second heat exchanging portion 16c are fixed together by welding.

The first heat exchanging part 15c has two fluid flow channels through which fluid flows to exchange heat with each other, the two fluid flow channels are separated from each other, and the first heat exchanging part 15c includes a plurality of plates; the first heat exchanging portion 15c has interlayer flow channels separated by stacking plates, and two fluids can flow through the first heat exchanging portion 15c, and the two fluids can exchange heat in the first heat exchanging portion 15c, for example, one fluid may be a cooling medium, and the other fluid may be a cooling liquid, and the cooling liquid is used for cooling heat generating elements such as batteries; in addition, the cooling device can also be used for three fluids, for example, one fluid is a refrigerant, the other two fluids can be cooling liquid, the two cooling liquids can exchange heat with the refrigerant through control selection, and then the cooling liquid can be used for cooling parts needing cooling after heat exchange and temperature reduction. The second heat exchanging portion 16c includes plates, the second heat exchanging portion 16c includes two fluid flow channels through which fluid flows for heat exchange, the two fluid flow channels are separated by plate lamination and can exchange heat, the second heat exchanging portion 16c includes interlayer flow channels separated by plate lamination, the second heat exchanging portion 16c can flow two fluids, the two fluids can exchange heat in the second heat exchanging portion 16, and the two fluids may be different or the same, such as the two fluids: one is a relatively high temperature refrigerant, the other is a relatively low temperature refrigerant, or one fluid is a refrigerant and the other may be a coolant, such as a coolant used to cool a heat generating component such as a battery. The second heat exchanging portion 16c has four ports: a first orifice 161, a second orifice 162, a third orifice 163, and a fourth orifice 164. The first heat exchanging portion 15c may have only one fluid passage and two ports: the first and

second ports

151 and 152 are only connected to the refrigerant channel, and are in contact with other elements or media requiring heat exchange for heat exchange.

The first plate 13, the second plate 17, the plate of the first heat exchanging part and the plate of the second heat exchanging part can all adopt the same material, the first plate 13 is similar to the plate of the first heat exchanging part in structure, the plate of the first heat exchanging part generally comprises four matching parts and four hole openings, and each matching part is provided with one hole opening; the first plate 13 differs in the location where the portholes are provided, and the first plate 13 comprises 4 mating portions: the first mating portion 131, the second mating portion 132, the third mating portion 133, and the fourth mating portion 134, in the embodiment, the first mating portion 131 and the second mating portion 132 are recessed inward toward the first heat exchanging portion, and the third mating portion 133 and the fourth mating portion 134 are protruded outward. The second plate 17 has a similar plate structure to that of the second heat exchanging part, and is different in the position where the pore passage is arranged; the second plate 17 may likewise comprise 4 mating portions: the first mating portion 171, the second mating portion 172, the third mating portion 173, and the fourth mating portion 174, wherein the first mating portion 171 and the second mating portion 172 of the second plate are recessed toward the second heat exchanging portion, and the third mating portion 173 and the fourth mating portion 174 are protruded outwardly.

The first plate 13 is provided with a first hole 137 at the second fitting portion 132, and the second plate 17 is provided with a second hole 177 at the second fitting portion 172, and the first hole 137 and the second hole 177 are oppositely arranged and communicated, where the opposite arrangement refers to adjacent and at the same position in the axial direction. The first matching part of the first plate 13 is arranged opposite to the first matching part of the second plate 17, the second matching part of the first plate 13 is arranged opposite to the second matching part of the second plate 17, the third matching part of the first plate 13 is arranged opposite to the third matching part of the second plate 17, and the fourth matching part of the first plate 13 is arranged opposite to the fourth matching part of the second plate 17; the first plate 13 is not provided with a through hole at the first matching part, the third matching part of the first plate 13 and the third matching part of the second plate 17 are not provided with a through hole or at least one of the third matching part and the fourth matching part of the first plate 13 and the fourth matching part of the second plate 17 are not provided with a through hole, the third matching part of the first plate 13 and the third matching part of the second plate 17 are matched, welded and sealed, and the fourth matching part of the first plate 13 and the fourth matching part of the second plate 17 are matched, welded and sealed, so that even if one of the third matching part and the fourth matching part is provided with a through hole, the two plates cannot be conducted through the through hole of the matching part. The first mating portion 171 of the second plate 17 is spaced apart from the first mating portion of the first plate, the second mating portion 172 of the second plate 17 is spaced apart from the second mating portion of the first plate, and the second plate 17 may be provided with a second hole in one of the first mating portion 171 or the second mating portion. When the second hole is formed in the first fitting portion 171, the refrigerant from the first heat exchanging portion passes through the space between the first plate and the second hole 177 to reach the first duct 161 of the second heat exchanging portion, and this portion of the refrigerant basically does not participate in the heat exchange of the second heat exchanging portion, joins the refrigerant that has undergone the heat exchange and has flowed out through the third port 55 with the refrigerant that has passed through the heat exchange and has come from the fourth port 56; when the second hole is formed in the second engaging portion 172, the refrigerant flowing from the first heat exchanging portion passes through the second hole 177 to the second port 162 of the second heat exchanging portion, and then is merged with the refrigerant flowing from the fourth port 56 to participate in heat exchange in the second heat exchanging portion, and the heat-exchanged refrigerant flows into the first port 161 and flows out through the third port 55.

The first plate 13, the second plate 17, the plate sheet of the first heat exchanging part and the plate sheet of the second heat exchanging part of the heat exchanger have the same flanging direction, and in the figure, the flanging direction is towards the throttling element, and in addition, the flanging direction can also be towards the connecting piece; the two heat exchange parts are basically not different from each other in appearance, and only the structure of two plates in the two heat exchange parts is different from the structures of other plates, so that the two heat exchange parts are relatively convenient to process. The concave-convex directions of the engaging portions of the first plate 13 and the second plate may be similar to those of the other plates. Similarly, the first hole 137 is communicated with the second duct 152 of the first heat exchanging portion, or the first hole 137 is a part of the second duct 152 constituting the first heat exchanging portion. The second hole 177 communicates with the second duct 162 of the second heat exchanging portion, or the second hole 177 is a part of the second duct 162 constituting the second heat exchanging portion.

The connector of this embodiment can be referred to the first embodiment above, and both are the same and will not be repeated here. The four interface parts may be integrated, or combined two by two, or combined three into one. The heat exchange assembly also includes a first coolant interface 41 and a second coolant interface 42, which are the same as above and will not be repeated here. The throttling element 20 may be an electronic expansion valve, the throttling element 20 has a port 201, which may be communicated with a pipeline of the system, in this embodiment, the port serves as a refrigerant inlet, and another port or an outlet of the throttling element 20 is communicated with the first duct 151 of the first heat exchanging portion. The connection of the heat exchange assembly of this embodiment to the system and the application thereof in the system refer to the second embodiment above, and will not be repeated here.

The connection between the heat exchange assembly and the system can be in other manners, as shown in fig. 14-16, fig. 14 is a schematic perspective view of a fourth embodiment of the heat exchange assembly, fig. 15 is a schematic sectional view of the heat exchange assembly, and fig. 16 is a schematic exploded view of the heat exchange assembly. The heat exchange assembly comprises a heat exchanger 10, a throttling element 20a and a connecting piece. The heat exchanger 10 includes a first heat exchanging portion 15b, a second heat exchanging portion 16b, and an attachment plate 14a, the attachment plate 14a includes a plate portion 142 and an attachment portion 143, and the attachment plate is an integral structure and may be formed by punching or flanging a plate material. The plate-shaped portion 142 of the mounting plate 14a is mostly located between the first heat exchanging portion 15b and the second heat exchanging portion 16b, the mounting portion 143 has the mounting hole 140, and the mounting portion 143 is used for fixedly mounting the heat exchanger to other components of the system. The heat exchanger 10 comprises a first end plate 156 and a second end plate 166, the first end plate 156 and the second end plate 166 are positioned at two opposite sides of the heat exchanger, the first heat exchanging part 15 comprises a first plate 11 and the first end plate 156, and the second heat exchanging part 16 comprises a second plate 12 and the second end plate 166. First board 11b is close to second heat transfer portion relatively or part and mounting panel laminating setting, and second board 12b is close to first heat transfer portion relatively or part and mounting panel laminating setting, and first heat transfer portion 15b, second heat transfer portion 16b, mounting panel 14a are fixed as an organic whole through the welding.

The first heat exchanging part 15b is provided with a heat exchanging core body, the first heat exchanging part is provided with two fluid flow channels for fluid to flow through and exchange heat with each other, the two fluid flow channels are separated, the first heat exchanging part comprises a plurality of plate sheets, and the first heat exchanging part can also comprise fins, so that the heat exchanging effect is improved; the first heat exchange portion has interlayer flow channels separated by plate lamination, and the first heat exchange portion 15b can flow through two fluids, which can exchange heat in the first heat exchange portion, for example, one fluid is a refrigerant, and the other fluid can be a cooling liquid, and the cooling liquid is used for cooling heat generating elements such as batteries; in addition, the cooling device can also be used for three fluids, for example, one fluid is a refrigerant, the other two fluids can be cooling liquid, the two cooling liquids can exchange heat with the refrigerant through control selection, and then the cooling liquid can be used for cooling parts needing cooling after heat exchange and temperature reduction. The first heat exchange portion may have only one fluid flow passage and two channels: the first and

second ports

151 and 152 are only connected to the refrigerant channel, and are in contact with other elements or media requiring heat exchange for heat exchange. The second heat exchanging portion 16b has a heat exchanging core. The second heat exchange portion includes the slab, and the second heat exchange portion has two fluid flow channels that supply fluid to flow through the heat transfer, and two fluid flow channels are range upon range of mutually to separate and can carry out the heat exchange through the slab between, and the second heat exchange portion includes through the range upon range of interbedded runner that separates mutually of slab, and second heat exchange portion 16b can flow through two kinds of fluids, and these two kinds of fluids can carry out the heat exchange at second heat exchange portion, are the refrigerant if two kinds of fluids: one fluid is a relatively high temperature refrigerant and the other is a relatively low temperature refrigerant, or one fluid is a refrigerant and the other may be a cooling fluid, such as a cooling fluid for cooling a heat generating element such as a battery. The second heat exchanging portion 16 has four ports: a first orifice 161, a second orifice 162, a third orifice 163, and a fourth orifice 164.

The first plate 11b may be made of the same material as the plate of the first heat exchanging part, and the first plate 11b has a different structure from the remaining plate of the first heat exchanging part, and one side of the first plate 11b is engaged with the mounting plate. The periphery of the first plate 11b is provided with a flanging portion 119 which is flanged towards the left side, namely the direction of the throttling element, the first plate 11b is provided with a main plate surface 110, the main plate surface is matched with the plate-shaped portion 142 of the mounting plate 14a, the main plate surface 110 can also be provided with at least two matching portions, and the matching portions can be inwards concave towards the first heat exchange portions and are welded with the matching portions of the adjacent plates in a matching mode. The first plate 11b is provided with a first hole 111, a third hole 112, which may be located at one of the fitting portions, respectively. The second plate 12b may be made of the same material as the plate of the second heat exchanging portion, and the second plate 12b may have a flange portion 129 that is flanged to the right side, i.e., the connector direction, on the periphery thereof, and the second plate 12b may have a main plate surface 120 that is fitted to a portion of the plate portion 142 of the mounting plate 14a facing the second heat exchanging portion, and the main plate surface 120 may have a second hole 121 and a fourth hole 122. Correspondingly, the mounting plate is provided with a first through hole 141 at a position corresponding to the first through hole 111, the second plate 12b is provided with a second through hole 121 at a position corresponding to the first through hole 141, the mounting plate is provided with a second through hole 144 at a position corresponding to the third through hole 112, the second plate 12b is provided with a fourth through hole 122 at a position corresponding to the second through hole 144, and the positions of the first through hole 141 and the second through hole 121 are communicated or approximately corresponding to the positions of the first through hole 111 and the first through hole 141; the positions of the second hole 112, the fourth hole 122 and the second through hole 144 are approximately corresponding, the size of the second hole 112 is matched with that of the connecting pipe 21, and the connecting pipe 21 is matched with the first plate for welding to realize sealing. The plate materials of the first heat exchanging part and the second heat exchanging part can be the same or different. The first plate and the second plate may also be different from the plate of the heat exchanging portion, so that the fitting portion may not be provided and the first plate and/or the second plate are additionally provided. When the first plate is similar to the plate of the first heat exchanging portion, the first plate 11b may have a matching portion, such as being recessed in a position corresponding to the hole, the matching portion is used for being welded to the plate adjacent to the first plate in the first heat exchanging portion in a matching manner, such as the matching portion being slightly concave in the first heat exchanging portion and matching with the convex of the plate adjacent to the first plate in the first heat exchanging portion. The second plate is also similar. The first hole 111 is communicated with the second duct 152 of the first heat exchanging portion, or the first hole 111 is a part of the second duct 152 constituting the first heat exchanging portion. The second hole 121 communicates with the second duct 162 of the second heat exchanging portion, or the second hole 121 is a part of the second duct 162 constituting the second heat exchanging portion.

The connector comprises a first interface part 43, a second interface part 44, a third interface part 45 and a fourth interface part 46, wherein the first interface part 43 is provided with a first interface 53, the second interface part 44 is provided with a second interface 54, the third interface part 45 is provided with a third interface 55, and the fourth interface part 46 is provided with a fourth interface 56. The interface parts of the embodiment are separately arranged, and each interface part is fixed with the heat exchanger, such as by welding; in addition, the four connecting parts can also be integrated, namely, the four connecting parts are of an integral structure and are fixed with the second heat exchange part of the heat exchanger. In this embodiment, the first port 53 communicates with the first hole 161 of the second heat exchanging portion, the second port 54 communicates with the third hole 163 of the second heat exchanging portion, the third port 55 communicates with the fourth hole 164 of the second heat exchanging portion, the fourth port 56 communicates with the second hole 162 of the second heat exchanging portion, and two fluid flow paths substantially cross each other in the second heat exchanging portion. The heat exchange assembly further comprises a first cooling liquid interface part 41 and a second cooling liquid interface part 42, the first cooling liquid interface part is provided with a first cooling liquid interface 51, the second cooling liquid interface part is provided with a second cooling liquid interface 52, the two cooling liquid interface parts are fixedly connected with or integrated with the first heat exchange part of the heat exchanger, the first cooling liquid interface 51 is communicated with a fourth pore channel 154 of the first heat exchange part, and the second cooling liquid interface 52 is communicated with a third pore channel 153 of the first heat exchange part. The throttling element 20a may be an electronic expansion valve.

In this embodiment, the plate pieces of the two heat exchanging portions have different flanging directions, and one pore passage of the two heat exchanging portions is communicated through the mounting plate 14a, so that the refrigerant can be communicated. The mounting plate can be made of a material with good mechanical strength, such as a stainless steel plate, and the like, and can be made of a material with relatively poor thermal conductivity, so that the heat transfer between the two heat exchanging parts can be relatively reduced. Specifically, the second port 152 of the first heat exchanging part is communicated with the second port 162 of the second heat exchanging part through the first through hole 141 of the mounting plate 14a, the first port 161 of the second heat exchanging part is communicated with the inside of the adapter 21 through the second through hole 144 of the mounting plate 14a, at least most of the adapter 21 is located in the first port of the first heat exchanging part, and the adapter 21 passes through the first heat exchanging part and is communicated with the throttling element 20a, so that the first port 161 of the second heat exchanging part is communicated with the throttling element through the mounting plate and the adapter, and the throttling element is communicated with the first port 151 of the first heat exchanging part after throttling. The adapter tube 21 may be welded to the mounting plate or welded to the second plate.

The heat exchange assembly can be used for a vehicle heat management system, the heat management system comprises a compressor, the heat exchange assembly, a condenser, at least one evaporator, a liquid receiver or a gas-liquid separator, at least one throttling element and the like, the heat management system comprises a refrigerant system and a cooling liquid system, a medium flowing in the refrigerant system is a refrigerant, a medium flowing in the cooling liquid system is cooling liquid, a first cooling liquid interface 51 and a second cooling liquid interface 52 are communicated through a fluid flow channel of a first heat exchange part, namely a cooling liquid flow channel, and is communicated with the coolant flow path of the system, the first coolant interface 41 and the second coolant interface 42 may be part of the first end plate of the first heat exchanging part, or may be separately processed and welded to be fixed to the first end plate and/or the heat exchanging core of the first heat exchanging part, or may be welded to be fixed to the first heat exchanging part by means of pipe fittings. The coolant channel of the first heat exchanging part comprises a first pore channel and a second pore channel, and the coolant channel is not communicated with the coolant channel. The heat exchange assembly enables the heat management system to be convenient to install and connect, connected pipelines are reduced, and the size of the system is reduced.

Specifically, the first interface 43 may be connected to a relatively high-temperature and high-pressure refrigerant pipeline, such as an outlet of a condenser, and the connection herein includes a case of being connected through a pipeline or other components, i.e., indirectly communicated. The second interface 44 is connected to an evaporator or a throttling element of the system, and the second interface 54 is communicated with the evaporator or the throttling element of the system, and the like; the third interface part 45 is connected with a compressor, and the third interface 55 can be communicated with a return air port of the compressor or a gas-liquid separator; the second port 44 is connected to an outlet of the evaporator, and the fourth port 56 is connected to an outlet of the evaporator or an outlet of the liquid reservoir of the system. The first coolant connection port 41 and the second coolant connection port 42 are connected to a coolant system circuit.

When the system is in operation, the high-temperature and high-pressure refrigerant may flow from the first port 53 into the first duct 161 of the second heat exchanging portion 16b, and the refrigerant is divided into two parts by the first duct 161: a part of the refrigerant is heat exchanged with the relatively low temperature refrigerant in the other fluid flow channel in the second heat exchanging part 16b, flows to the third hole passage 163, flows to the evaporator of the system through the second connector 54 or flows to the evaporator of the system through the throttling element, or is throttled and divided into two evaporators, the refrigerant evaporated in the evaporator returns to the second hole passage 162 of the second heat exchanging part through the fourth connector 56, joins with the refrigerant from the first heat exchanging part, flows to the fourth hole passage 164 of the second heat exchanging part 16b, and exchanges heat with the relatively high temperature refrigerant in the other fluid flow channel; another part of the refrigerant flows from the first hole passage through the fourth hole 122 of the second plate, the second through hole 144 of the mounting plate 14a, the inner hole 210 of the connecting pipe to the throttling element or through the second through hole 144 of the mounting plate 14a, the inner hole 210 of the connecting pipe to the throttling element or directly through the inner hole 210 of the connecting pipe to the throttling element, is throttled by the throttling element 20a, flows to the first hole passage 151 of the first heat exchanging part 15b, after heat exchange in the first heat exchanging part, to the second porthole 152, from the first hole 111 of the first plate, the first through hole 141 of the mounting plate 14a, the second hole 121 of the second plate to the second porthole of the second heat exchanging part, the refrigerant is merged with another part of the low-temperature refrigerant, flows from the second duct 162 to the fourth duct 164, exchanges heat with the refrigerant of relatively high temperature in another flow passage, flows out through the third port 55 communicated with the fourth duct 164, and flows to the compressor, or naturally, may return to the compressor after passing through a gas-liquid separator and the like. Other structures and operation of the embodiment can be referred to the above embodiment.

The connecting pipe of the embodiment can be welded with the first plate in a matching way, and the second through hole of the mounting plate can be a hole with a diameter smaller than that of the connecting pipe, so that the connecting pipe is abutted against the mounting plate and is fixed by welding; the second through hole of the mounting plate can also be a step hole, at least part of the step hole is smaller than the connecting pipe, part of the step hole is matched with the connecting pipe, the end part of the connecting pipe is positioned in the step hole of the mounting plate, and the connecting pipe is matched and welded with the mounting plate.

In addition, the adapter tube can also be welded with the second plate by passing through the mounting plate in a matching way, as shown in fig. 17 and 18, fig. 17 is a schematic sectional view of a fifth embodiment of the heat exchange assembly, and fig. 18 is an exploded schematic view of the heat exchange assembly. The differences between this embodiment and the fourth embodiment include the differences that the heat exchange assembly is not provided with a mounting plate, a connecting pipe structure and a matching position. The connecting pipe 21a is provided with an outer convex part 211, the outer convex part 211 is an annular convex part and is positioned between the first plate 13d and the second plate 17d to play a limiting role, and in addition, the first plate and/or the second plate can be provided with a flanging part at the part matched with the connecting pipe to be matched with the connecting pipe, so that the connecting pipe can be relatively stable after assembly and before welding, the welding is convenient, and the welding quality is more reliable. In addition, the adapter tube may be welded to the outer wall portion without providing the projecting portion. For example, the fourth hole 178 of the second plate may be a flanged hole, and the fourth hole 178 is engaged with a nipple that passes through the second plate such that the one end of the nipple is located at the first hole of the second heat exchanging portion 16d and the other end of the nipple is communicated with the throttling element.

When the system is in operation, the high-temperature and high-pressure refrigerant may flow into the first port 161 of the second heat exchanging portion 16d from the first connection port 53, and the refrigerant is divided into two parts by the first port 161: a part of the refrigerant is heat exchanged with the relatively low temperature refrigerant in the other fluid flow channel in the second heat exchanging portion 16, flows to the third orifice 163, flows to the evaporator of the system through the second joint 54 or flows to the evaporator of the system through the throttling element, or is throttled and divided into two evaporators, the refrigerant evaporated in the evaporator returns to the second orifice 162 of the second heat exchanging portion through the fourth joint 56, joins with the refrigerant from the first heat exchanging portion 15d, flows to the fourth orifice 164 of the second heat exchanging portion, and exchanges heat with the relatively high temperature refrigerant in the other fluid flow channel; the other part of the refrigerant flows from the first hole passage to the throttling element through the inner hole 210 of the connecting pipe, throttles through the throttling element 20a, flows to the first hole passage 151 of the first heat exchanging part, exchanges heat at the first heat exchanging part, then flows to the second hole passage 152, flows from the first hole 137 of the first plate, the second hole 177 of the second plate to the second hole passage 162 of the second heat exchanging part, joins with the other part of the low-temperature refrigerant, flows from the second hole passage 162 to the fourth hole passage 164, exchanges heat with the refrigerant with relatively high temperature in the other flow passage, flows out through the third connector 55 communicated with the fourth hole passage 164 and flows to the compressor, and naturally, the refrigerant can return to the compressor after passing through components such as a gas-liquid separator and the like. Other structures and operation of the embodiment can be referred to the above embodiment.

The manner of mounting the nozzle may be changed such that the outer protrusion 211 is located at the second heat exchanging portion 16d, the outer protrusion 211 is located at the second plate 17d close to the second heat exchanging portion, that is, the nozzle passes through the fourth hole 178 from the second plate side toward the first plate 13d, the outer protrusion 211 is limited to the second plate, and the outer protrusion 211 and the end of the nozzle are located in the first duct 161 of the second heat exchanging portion, and the rest is the same as above.

The throttling element may also be counter-throttled, unlike the throttling direction of the throttling element in the several embodiments above, as shown in fig. 19, which is a schematic cross-sectional view of a sixth embodiment of a heat exchange assembly in fig. 19. The main difference in this embodiment is that the throttling element 20b is a reverse throttling, and accordingly, in cooperation with the throttling element 20b, the nipple 21b is distinguished, and the rest of the construction and operation can be referred to the above fifth embodiment. The connection between the throttling element and the connecting pipe, i.e. below the valve port, is used as the inlet of the throttling element, and the connection between the other side of the valve port, i.e. the upper side (the upper side and the lower side are described by taking the axial direction of the throttling element as the vertical direction) and the first duct is used as the outlet of the throttling element.

Therefore, the valve port of the throttling element is directly butted with the connecting pipe, the flow path of the refrigerant at the inlet side is relatively shortened, and the fluid resistance loss can be reduced; in addition, the throttled refrigerant is directly positioned in the first pore canal of the first heat exchanging part, and the fluid resistance of the side is also reduced; the refrigerant channel in the throttling element is obviously less than that in the other direction, so that the valve body of the throttling element can be reduced, and part of the throttling element, such as the valve core, can extend into the first pore channel of the first heat exchanging part, so that the axial direction of the heat exchanging component can be shortened. In the above embodiment, the space between the first plate and the adjacent plate is communicated with one hole of the first heat exchanging portion, or the space between the first plate and the adjacent plate participates in heat exchange, the space between the second plate and the adjacent plate is communicated with one hole of the second heat exchanging portion, or the space between the second plate and the adjacent plate participates in heat exchange, in addition, the space between the first plate and the adjacent plate may not be communicated with any hole of the first heat exchanging portion, and the space between the first plate and the adjacent plate does not participate in heat exchange, so that the heat loss between the first heat exchanging portion and the second heat exchanging portion can be reduced; or the second plate and the adjacent plate sheet can be not communicated with any pore channel of the second heat exchanging part, and the space between the second plate and the adjacent plate sheet does not participate in heat exchange; in this case, the first plate or the second plate may not be provided with an engaging portion for engaging and welding with an adjacent plate piece, or may not be provided with a burring portion. Namely, the first plate and the second plate or one of the first plate and the second plate can be additionally added.

In the above embodiment, the number of the interfaces on the second heat exchange portion side of the heat exchange assembly connected to the refrigerant is four, or 5 or 6, for example, the system has two evaporators, two of the interfaces may respectively communicate with the two evaporators or communicate with the evaporator through the throttling element, or the other two interfaces respectively communicate with the evaporator outlet, and both of the interfaces communicate with one duct of the second heat exchange portion. In addition, the connecting member may be a unitary structure, rather than a plurality of combinations as in the embodiments. The matching mode of the connecting piece and the second heat exchange part is not limited to welding, and the connecting piece and the second heat exchange part can be fixedly connected through threads or connected through welding and threads. In addition, the connecting piece can also be an integrated structure of the second end plate of the second heat exchanging part. The connecting piece refers to a connecting port part fixed with the second heat exchange part, and does not include a part where the connecting port of the throttling element is located and a cooling liquid connecting port part fixed with the first heat exchange part.

The heat exchange assembly can realize heat exchange between a high-temperature refrigerant and a low-temperature refrigerant and reduce the temperature of the high-temperature refrigerant, so that the system efficiency is improved, the low-temperature refrigerants of the two parts can be selected to be subjected to heat exchange with the high-temperature refrigerant at the second heat exchange part, the low-temperature refrigerants of the two parts return to the compressor through the third interface of the heat exchange assembly, the arrangement of pipelines can be reduced, and the system connection is simple and convenient. The other mode of the heat exchange assembly can realize the heat exchange between a high-temperature refrigerant and part of low-temperature refrigerants, one part of the two parts of low-temperature refrigerants can be selected to participate in heat exchange, the temperature of the high-temperature refrigerant is reduced, the temperature of the refrigerant returning to the compressor is not too high, the efficiency is improved, and the system connection is simple and convenient.

The flow direction is only used for illustration, and is not used as a limitation, and is not a requirement of closing, and other components such as other control valve parts and the like can be added in the evaporator, such as a throttling element is arranged in front of the evaporator and even a control valve and the like are added in the evaporator; the technical schemes can be changed according to the actual system, and the communication condition is subject to the specific technical scheme.

Herein, the communication between the two or other components is not described in a closed manner, which means that the two are in communication, but also includes the possibility of having other components such as throttling elements, separators, control valves, check valves, heat exchangers, etc. between the two. For clarity, the numbers such as first, second, third and fourth are used herein only for clarity and convenience of description, and do not necessarily indicate that the component needs to have 4 such structures, nor have any requirement on the sequence, and may have only one or two such structures, for example, a first plate includes a first mating portion and a fourth mating portion, which means that the first plate includes the two mating portions, and may not have a second mating portion and a third mating portion, which does not mean that the first plate has four mating portions, and the like. The throttling element can also take the form of a throttling pipe, which can be arranged in the duct. The application of the system is different, and the structures can be changed correspondingly.

The heat exchanger makes a pore of the first heat exchanging part communicated with a pore of the second heat exchanging part by arranging the first plate and the second plate, so that two heat exchanging parts with different functions can form an integrated structure relatively conveniently by welding, and the integrated heat exchanger with two heat exchanging part structures is realized, the second pore of the first heat exchanging part is communicated with a pore of the second heat exchanging part, and the structure of the heat exchanger can be relatively smaller. The first, second, third and fourth ports are defined in a counterclockwise direction with respect to the ports of the two heat exchanging portions, which are for convenience of illustration and are not necessary.

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 modifications, combinations and equivalents can be made without departing from the spirit and scope of the invention as defined in the claims.

Claims

1. A heat exchanger comprises a first heat exchanging part and a second heat exchanging part, wherein the first heat exchanging part comprises a first plate, the second heat exchanging part comprises a second plate, the first plate is relatively close to the second heat exchanging part or the first plate is attached to the second heat exchanging part, and the second plate is relatively close to the first heat exchanging part or the second plate is attached to the first heat exchanging part; the second heat exchange part comprises two fluid flow channels, and heat exchange can be carried out between the two fluid flow channels; the first heat exchange part comprises two fluid flow channels which are not communicated, heat exchange can be carried out between the two fluid flow channels, and the two fluid flow channels comprise a refrigerant flow channel and a cooling liquid flow channel; the second heat exchange part comprises two fluid flow channels, and heat exchange can be carried out between the two fluid flow channels; the coolant flow channel of the first heat exchanging part comprises a first hole channel (151) and a second hole channel (152), the coolant flow channel of the first heat exchanging part comprises a third hole channel (153) and a fourth hole channel (154), and the second heat exchanging part comprises four hole channels: a first duct (161), a second duct (162), a third duct (163), a fourth duct (164); the first plate includes a first hole communicating with a second port of the first heat exchanging portion, and the second plate includes a second hole communicating with one port of the second heat exchanging portion; the second hole is communicated with the first hole, and the heat exchanger is fixed into a whole through welding.

2. The heat exchanger according to claim 1, wherein the second porthole of the first heat exchange portion is located at a position corresponding to that of the first hole or a periphery of the first hole of the first plate is an integral part of the second porthole forming the first heat exchange portion; the hole channel of the second heat exchanging part, which is communicated with the second hole, is a second hole channel, the position of the second hole channel corresponds to the second hole, or the periphery of the second hole of the second plate is a component part of the second hole channel forming the second heat exchanging part; the position of the second hole corresponds to the position of the first hole, and the second duct of the second heat exchanging part corresponds to the position of the second duct of the first heat exchanging part; the first plate comprises at least two matching parts, the second plate comprises at least two matching parts, at least one matching part of the first plate is arranged opposite to one matching part of the second plate, and at least one of the matching parts of the first plate and the matching parts of the second plate which are arranged oppositely is not provided with a through hole.

3. The heat exchanger according to claim 1 or 2, further comprising a mounting plate, the mounting plate comprising a plate-like portion (142) and a mounting portion (143), the mounting plate being of unitary construction, the plate-like portion of the mounting plate being located at least mostly between the first and second heat exchanging portions, the mounting portion being located at least partially outside both of the heat exchanging portions; the first plate and the mounting plate are at least partially attached and welded, and the second plate and the mounting plate are at least partially attached and welded; the mounting plate comprises a first through hole (141), the first hole and the second hole are communicated through the first through hole, the first hole corresponds to the first through hole in position, and the first through hole corresponds to the second hole in position; the plate-like portion of the mounting plate is at least partially located between the first plate and the second plate.

4. The heat exchanger of claim 3, wherein the first plate further comprises a third hole, the second plate further comprises a fourth hole, the mounting plate comprises a second through hole, the third hole communicates with the fourth hole through the second through hole, the third hole corresponds to a location of the second through hole, and the second through hole corresponds to a location of the fourth hole; the first plate comprises a flanging part, the second plate comprises a flanging part, the flanging part of the first plate faces away from the mounting plate flanging, the flanging part of the second plate faces away from the mounting plate flanging, and the flanging part of the first plate is different from the flanging part of the second plate in flanging direction.

5. The heat exchanger of claim 4, further comprising a connection pipe, wherein the connection pipe is at least partially located in the first hole of the first heat exchanging portion, one end of the connection pipe is at least partially located at a passage position where the third hole of the first plate, the second through hole of the mounting plate and the fourth hole of the second plate are located, one end of the connection pipe is at least partially inserted through the third hole of the first plate, and the connection pipe is fixed to at least one of the first plate, the mounting plate and the third plate by welding.

6. The heat exchanger of claim 1, wherein the first plate comprises a flanging part, the second plate comprises a flanging part, the flanging part of the first plate and the flanging part of the second plate are flanged towards the same side, the flanging part of the first plate and the flanging part of the second plate are fixed by welding, and the first plate and the second plate are at least partially attached and fixed by welding; the second hole has a periphery located at a distance from the first plate and a periphery located at a distance from the second plate, the first hole and the second hole communicating through a space between the first plate and the second plate.

7. The heat exchanger of claim 1, wherein the first plate comprises a flanging part, the second plate comprises a flanging part, the flanging part of the first plate and the flanging part of the second plate are flanged towards the same side, the flanging part of the first plate and the flanging part of the second plate are fixed by welding, and the first plate and the second plate are at least partially attached and fixed by welding; the first plate comprises at least two matching parts, the second plate comprises at least two matching parts, at least one matching part of the first plate is arranged opposite to one matching part of the second plate, and at least one of the matching parts of the first plate and the matching parts of the second plate which are arranged oppositely is not provided with a through hole; the second hole has a periphery located at a distance from the first plate, the first hole has a periphery located at a distance from the second plate, the first hole and the second hole do not correspond in position, and the first hole and the second hole communicate through a space between the first plate and the second plate.

8. The heat exchanger of claim 7, wherein the two oppositely disposed mating portions engage a welded seal; the first hole is provided in one of the fitting portions of the first plate, and the second hole is provided in one of the fitting portions of the second plate.

9. The heat exchanger according to any one of claims 6 to 8, wherein the first plate further comprises a third hole, the second plate further comprises a fourth hole, the third hole corresponds to the fourth hole in position, the heat exchanger further comprises a nipple, the nipple is at least partially located at the first hole passage of the first heat exchanging part, one end of the nipple at least partially penetrates through the third hole of the first plate, and the nipple is fixed to the first plate and/or the second plate by welding.

10. The heat exchanger according to any one of the preceding claims, wherein the first heat exchanging portion comprises a plurality of plates, the second heat exchanging portion comprises a plurality of plates, and the plates of the first heat exchanging portion, the first plate, the second plate and the second heat exchanging portion are made of the same material; the heat exchanger adopts protective welding or vacuum welding.