CN114562899A

CN114562899A - Heat exchange device

Info

Publication number: CN114562899A
Application number: CN202011362272.8A
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: 2020-11-27
Filing date: 2020-11-27
Publication date: 2022-05-31

Abstract

The invention discloses a heat exchange device which comprises a heat exchange unit, a pump unit and a throttling unit, wherein the pump unit is fixed with a plate body, the pump unit is provided with a first interface and a second interface, the first interface of the pump unit is communicated with a first fluid channel of the heat exchange unit, and a throttling hole of the throttling unit is positioned between a second pipeline and a second pore channel or the second pipeline. By integrating the heat exchange unit, the pump unit and the throttling unit, the structure is compact, and the occupied space is small.

Description

Heat exchange device

Technical Field

The invention relates to the technical field of heat management, in particular to a heat exchange device.

Background

In a thermal management system including a battery cooler and an expansion valve, the battery cooler has a coolant flow passage and a refrigerant flow passage, the battery cooler is integrated with the expansion valve, so that an outlet of the expansion valve is directly communicated with the refrigerant flow passage of the battery cooler.

Disclosure of Invention

The purpose of the present application is to provide a heat exchange device that is compact and miniaturized.

A heat exchange device comprises a heat exchange unit, the heat exchange unit comprises a plate body and a heat exchange core, the heat exchange unit is provided with a first fluid channel and a second fluid channel which are isolated from each other, the first fluid channel comprises a first hole, the second fluid channel comprises a second hole, the heat exchange unit further comprises a pump unit and a throttling unit, the pump unit is fixed with the plate body, the pump unit is provided with a first interface and a second interface, the first interface is positioned on one side of the pump unit, which faces the heat exchange unit, and is communicated with the first hole,

the heat exchange device further comprises a second connection pipe having a second pipe, the throttling unit has a throttling hole,

the orifice is located between the second conduit and the second port, the orifice communicating the second conduit and the second port,

alternatively, the orifice is located in the second conduit, the second conduit includes a first sub-conduit and a second sub-conduit, the orifice communicates the first sub-conduit and the second sub-conduit, and the second sub-conduit communicates with the second orifice.

The provided heat exchange device comprises a heat exchange unit, a pump unit and a throttling unit, wherein the heat exchange unit comprises a plate body and a heat exchange core body, the pump unit is fixed with the plate body, a first interface of the pump unit is communicated with a first fluid channel of the heat exchange unit, and a throttling hole of the throttling unit is positioned between a second pipeline and a second pore channel or the second pipeline. By integrating the heat exchange unit, the pump unit and the throttling unit, the structure is compact, and the occupied space is small.

Drawings

FIG. 1 is a perspective view of one embodiment of a heat exchange device;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is an enlarged partial schematic view of FIG. 1;

FIG. 4 is a cross-sectional schematic view of another embodiment of a heat exchange device;

FIG. 5 is an enlarged partial schematic view of FIG. 4;

in the figure, arrows indicate the direction of fluid flow, solid lines indicate the refrigerant, and broken lines indicate the coolant.

Detailed Description

The following description of the embodiments refers to the accompanying drawings.

Referring to fig. 1-3, in this embodiment, the heat exchange device includes a heat exchange unit, a throttling unit 70, and a pump unit 20, wherein both the throttling unit 70 and the pump unit 20 are fixed to the heat exchange unit. The heat exchange unit includes a plate body 60 and a heat exchange core 10. The heat exchange core 10 comprises a plurality of stacked plates, the plate body 60 and the heat exchange core 10 can be fixed by welding, and the heat exchange unit is formed with a first fluid passage and a second fluid passage which are isolated from each other. It should be noted that the plate body 60 may be one or more of various plate bodies such as an end plate, a bottom plate, a mounting plate, etc. fixed to the heat exchange core body, and the structure and the number of the plate bodies are not limited as long as the one or more plate bodies for fixing the throttle unit and the pump unit are satisfied as the plate bodies in the present embodiment.

In the heat exchange core 10, adjacent plates are stacked to form a first interplate channel or a second interplate channel, one side of each plate is a first interplate channel, and the other side of each plate is a second interplate channel. The fluid of the first plate interspaces may be capable of heat exchange with the fluid of the second plate interspaces. It should be noted here that the relative non-communication of the first plate to plate channels means that there may be communication in the system after the heat exchanger device has become part of the thermal management system, without communication inside the heat exchanger core.

In this embodiment, the first fluid channel of the heat exchange unit is a coolant channel, the second fluid channel is a refrigerant channel (not shown in the figure), the first fluid channel includes a first channel 12, a plurality of first inter-plate channels, and a third channel (not shown in the figure), the second fluid channel includes a second channel 11, a plurality of second inter-plate channels, and a fourth channel (not shown in the figure), wherein the first inter-plate channels communicate the first channel and the third channel, and the second inter-plate channels communicate the second channel and the fourth channel.

As shown in fig. 1 and 2, the pump unit 20 is fixed to the plate body 60, and the two may be fixed by welding, riveting, screwing, or the like. It should be noted that, in other embodiments, the first port 21 may be a fluid outlet of the pump unit 20, and the second port 22 may be a fluid inlet of the pump unit 20, where the pump unit 20 has a first port 21 and a second port 22, and the first port 21 is a fluid inlet of the pump unit 20.

The plate body 60 has a first through hole 61, the first through hole 61 corresponds to the first porthole 12 of the first fluid passage, and the first through hole 61 communicates with the first porthole 12. The first port 21 is located on a side of the pump unit 20 facing the plate body 60, and the first port 21 corresponds to the first through hole 61, and the first port 21 communicates with the first through hole 61. Thus, the first duct 12 can communicate with the second port 22 through the first through hole 61 and the first port 21.

The heat exchange device further has a first connection pipe 30, a second connection pipe 40 and a third connection pipe 50, wherein the first connection pipe 30 has a first duct 31, the second connection pipe 40 has a second duct 41, and the third connection pipe 50 has a third duct 51. The first conduit 31 communicates with the third port, the second conduit 41 communicates with the second port 11 of the second fluid passage, and the third conduit 51 communicates with the fourth port of the second fluid passage.

In this way, under the action of the pump unit 20, the cooling liquid can flow from the first pipe 31 of the first adapter 30 into the third port of the first fluid channel of the heat exchange core, then into the first inter-plate channel, into the pump unit 20 through the first port 12, the first through hole 61 and the first port 21, and out of the pump unit 20 through the second port 22. The cooling liquid can exchange heat with the refrigerant in the second fluid channel in the heat exchange unit to reduce the temperature.

In this embodiment, the pump unit 20 can be fixed to the heat exchange unit, so that the number of pipes between the pump unit and the heat exchange unit is reduced, the structure is compact, and the occupied space is relatively small. Also in the present embodiment, the flow rate of the fluid flowing into the first fluid passage of the heat exchange unit may be controlled by the pump unit, and the amount of heat exchange between the cooling liquid in the first fluid passage and the refrigerant in the second fluid passage may be controlled, thereby achieving control of the temperature of the cooling liquid.

As shown in fig. 2 and 3, the throttling unit 70 is located between the heat exchange core 10 and the second connection pipe 40. The plate body 60 has a flanged portion 62, and the flanged portion 62 has a second through hole 63, and the second through hole 63 corresponds to the second porthole 11. The second adapter tube 40 has a small diameter portion 42, the small diameter portion 42 is located on the side of the second adapter tube 40 close to the heat exchange core 10, at least a part of the small diameter portion 42 is located in the second through hole 63, and the flange portion 62 and the second adapter tube 40 are fixed by welding. The throttling unit 70 is a plate-shaped structure, the throttling unit 70 has a first end 72 facing the second connecting pipe 40 and a second end 73 facing the heat exchange core 10, wherein a part of the first end 72 is connected with the small diameter portion 42, a part of the second end 73 is connected with the heat exchange core 10, the part of the first end 72 and the small diameter portion 42 can be fixed by welding or limited by abutting, and the part of the second end 73 and the heat exchange core 10 can be fixed by welding or limited by abutting.

The throttle unit 70 has an orifice 71, the second duct 41 and the second duct 11 are communicated with the orifice 71, and the orifice 71 has a much smaller diameter than the second duct 41. After the refrigerant flows in from the first tubes 41, the refrigerant is throttled and depressurized while passing through the throttle hole 71, and the depressurized refrigerant flows into the second fluid channel, passes through the second port tube 11, the second plate-to-plate channel, the fourth port tube, and the third tubes 51, and then flows out of the heat exchanger. The refrigerant after being decompressed can be heated by exchanging heat with the cooling liquid of the first fluid channel in the heat exchange core.

In this embodiment, the throttle hole 71 with a certain aperture is used to throttle and reduce the pressure of the refrigerant and regulate the flow rate of the cooling liquid through the pump unit to realize the temperature regulation of the cooling liquid, the throttle unit occupies a small space, the pump and the heat exchange unit can be integrated, the overall structure is compact, and the space is saved.

Referring to fig. 4-5, another embodiment is shown in which the throttling unit 70 is located within the second nipple 40. As shown in fig. 5, the second adapter tube 40 has a step portion 43 and a groove 44 therein, wherein the step portion 43 and the groove 44 are disposed adjacent to each other, the step portion 43 is close to the heat exchange core 10 relative to the groove 44, the heat exchange unit further has a buckle 80, and a portion of the buckle 80 is limited in the groove 44, so that a portion of the throttling unit 70 is abutted against the step portion 43, and thus the throttling unit 70 is limited in the second adapter tube 40. Since the throttling unit 70 is limited in the second connection pipe 40, so that the second pipe 41 is divided into the first sub-pipe 45 and the second sub-pipe 46, when the refrigerant flows into the second pipe 41, the refrigerant is throttled and depressurized into a low-pressure refrigerant when passing through the throttle hole 71 in the process of flowing from the first sub-pipe 45 to the second sub-pipe 46 through the throttle hole 71. Other structures of this embodiment are the same as or similar to those of the previous embodiments, and are not described herein again.

In the foregoing embodiment, the heat exchange unit is a battery cooler, the refrigerant absorbs heat of the cooling liquid in the heat exchange core, the cooling liquid is cooled, and the refrigerant is heated. In other embodiments, the heat exchange unit may also be a battery heater, the refrigerant heats the coolant by releasing heat in the heat exchange core, and the coolant heats and cools. Other structures may be substantially unchanged, and thus are not described in detail.

It should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention may be modified or substituted by equivalents, and all technical solutions and modifications which do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims

1. A heat exchange device comprises a heat exchange unit, the heat exchange unit comprises a plate body and a heat exchange core body, the heat exchange unit is provided with a first fluid passage and a second fluid passage which are isolated from each other, the first fluid passage comprises a first hole, the second fluid passage comprises a second hole, the heat exchange unit is characterized by further comprising a pump unit and a throttling unit, the pump unit is fixed with the plate body, the pump unit is provided with a first interface and a second interface, the first interface is positioned on one side of the pump unit, which faces the heat exchange unit, and is communicated with the first hole,

the orifice is located between the second pipe and the second port passage, the orifice communicates the second pipe and the second port passage,

2. The heat exchange device according to claim 1, wherein the plate body has a first through hole corresponding to and communicating with the first port, the pump unit is fixed to the plate body, and the first port communicates with the second port through the first through hole and the first port.

3. The heat exchange device according to claim 1 or 2, wherein the plate body has a burring portion having a second through hole corresponding to the second porthole, the second adapter tube has a small diameter portion located on a side of the second adapter tube close to the heat exchange core, at least a portion of the small diameter portion is located in the second through hole, and the burring portion and the second adapter tube are fixed by welding.

4. The heat exchange device according to claim 3, wherein the throttle unit is of a plate-like structure, the throttle unit is located between the second nozzle and the heat exchange core, the throttle hole is located between the second tube and the second hole passage, and the throttle unit has a first end portion facing the second nozzle and a second end portion facing the heat exchange core, wherein a portion of the first end portion is connected to the small diameter portion, and a portion of the second end portion is connected to the heat exchange core.

5. The heat exchange device according to claim 4, wherein the portion of the first end portion and the small diameter portion are fixed by welding or limited by abutment, and the portion of the second end portion and the heat exchange core are fixed by welding or limited by abutment.

6. The heat exchange device of claim 3, wherein the throttling unit is of a plate-like configuration, the throttling unit is located within a second header, the throttling hole is located in the second conduit, the second conduit comprises a first sub-conduit and a second sub-conduit, the throttling hole communicates the first sub-conduit with the second sub-conduit, and the second sub-conduit communicates with the second orifice.

7. The heat exchange device according to claim 6, wherein the second connection pipe has a step portion and a groove therein, wherein the step portion and the groove are disposed adjacent to each other, the step portion is close to the heat exchange core body relative to the groove, the heat exchange device further has a buckle, and a portion of the buckle is limited in the groove, so that a portion of the throttling unit abuts against the step portion, and the throttling unit is limited in the second connection pipe.