Plate heat exchanger, vehicle heat management device, vehicle heat management system and vehicle

Abstract

The invention discloses a plate heat exchanger, a vehicle heat management device, a vehicle heat management system and a vehicle, in the thickness direction of the plate heat exchanger, the plate heat exchanger is provided with a first side and a second side which are opposite to each other, the plate heat exchanger is provided with a plurality of flow channels, the flow channels comprise supercooling flow channels and condensation flow channels, and the supercooling flow channels are communicated with the condensation flow channels. One end of the supercooling flow channel is arranged on the first side, and the other end of the supercooling flow channel is arranged on the second side. According to the technical scheme, the length of the connecting pipe is reduced, so that the refrigerant needing to be injected into the vehicle heat management device is less, and the safety of a vehicle is higher.

Description

Technical Field

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

[0002] Currently, vehicles include a vehicle thermal management system, which includes a vehicle thermal management device. The vehicle thermal management device includes a compressor, condenser, expansion valve, evaporator, subcooler, liquid reservoir, and connecting pipes. The connecting pipes are used to connect the compressor, condenser, expansion valve, evaporator, subcooler, and liquid reservoir. However, the compressor, condenser, expansion valve, evaporator, subcooler, and liquid reservoir are relatively dispersed, resulting in a long connecting pipe. This, in turn, requires a large amount of refrigerant to be added to the vehicle thermal management device, reducing vehicle safety. Summary of the Invention

[0003] The main purpose of the present invention is to provide a plate heat exchanger, which is intended to help reduce the length of the connecting pipe, so that the vehicle thermal management device needs to be filled with less refrigerant, thereby increasing the safety of the vehicle.

[0004] To achieve the above-mentioned objectives, the present invention proposes a plate heat exchanger. In the thickness direction of the plate heat exchanger, the plate heat exchanger has a first side and a second side opposite to each other. The plate heat exchanger is provided with a plurality of flow channels, including a subcooling flow channel and a condensing flow channel. One end of the subcooling flow channel is provided on the first side, and the other end is provided on the second side.

[0005] Optionally, both ends of the condensation flow channel are arranged on the first side.

[0006] Optionally, the supercooling channel has a first inlet end provided on the first side, and a first outlet end provided on the second side.

[0007] Optionally, the flow channel includes a flow area, the plate heat exchanger includes a plurality of stacked heat exchange plates, the flow area is limited between two adjacent heat exchange plates, and guide ribs are provided in the flow area to make the flow area bent.

[0008] Optionally, one end of the guide rib is used to limit a bending portion of the flow area.

[0009] Optionally, a flow area of ​​the supercooling flow channel is closer to the first side than a flow area of ​​the condensing flow channel.

[0010] Optionally, the plurality of flow channels further include water-cooling flow channels, and the liquid flow direction in the flow area of ​​the supercooling flow channel and / or the condensing flow channel is opposite to the liquid flow direction in the flow area of ​​the water-cooling flow channel.

[0011] Optionally, the flow channel further includes a converging section having one end of the flow channel and a diverting section having the other end of the flow channel, the flow area connects the converging section and the diverting section, and there are multiple flow areas, and the converging section and the diverting section are respectively passed through multiple pieces of the heat exchange plates.

[0012] Optionally, the converging section of the supercooling channel and the converging section of the condensing channel are arranged in parallel and close to each other, and the diverting section of the supercooling channel and the diverting section of the condensing channel are arranged in parallel and close to each other.

[0013] The present invention further provides a vehicle thermal management device, which includes the aforementioned plate heat exchanger.

[0014] The present invention also provides a vehicle thermal management system, which includes the aforementioned vehicle thermal management device.

[0015] The present invention also provides a vehicle, comprising the aforementioned vehicle thermal management system.

[0016] In the technical solution of the present invention, the plate heat exchanger has a first side and a second side facing each other in the thickness direction. The plate heat exchanger is provided with multiple flow channels, including a subcooling channel and a condensing channel. The subcooling channel has one end located on the first side and the other end located on the second side. Thus, the plate heat exchanger integrates a condenser corresponding to the condensing channel and a subcooler corresponding to the subcooling channel. This helps reduce the length of the connecting pipe, reducing the amount of refrigerant required to fill the vehicle thermal management device, thereby improving vehicle safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 This is a schematic structural diagram of an embodiment of a vehicle thermal management device according to the present invention;

[0019] Figure 2 This is a structural diagram of the thermal management device for CRRC from another perspective;

[0020] Figure 3 for Figure 2 Schematic diagram of the structure of the medium plate heat exchanger;

[0021] Figure 4 for Figure 3 Schematic diagram of the structure of the medium plate heat exchanger from another perspective;

[0022] Figure 5 for Figure 4 A cross-sectional view of the subcooling channel's branch section and the condensing channel's confluence section cut along the plate heat exchanger's thickness direction;

[0023] Figure 6 for Figure 4 A cross-sectional view of the converging section and the diverging section of the condensing flow channel cut along the thickness direction of the plate heat exchanger;

[0024] Figure 7 for Figure 4 A cross-sectional view of the confluence section of the subcooling channel cut along the thickness direction of the plate heat exchanger;

[0025] Figure 8 for Figure 4 A cross-sectional view of the converging section of the condensing channel and the diverging section of the water-cooling channel along the thickness direction of the plate heat exchanger;

[0026] Figure 9 for Figure 4 A schematic diagram of the structure of a medium-plate heat exchanger with some of the heat exchange plates hidden, where the arrows in the figure indicate the flow direction of the refrigerant in the flow area of ​​the condensing channel;

[0027] Figure 10 for Figure 4 A schematic diagram of the structure of a medium-plate heat exchanger with some of the heat exchange plates hidden, where the arrows in the figure indicate the flow direction of the refrigerant in the flow area of ​​the subcooling channel;

[0028] Figure 11 for Figure 4 A schematic diagram of the structure of a medium-plate heat exchanger with some of the heat exchange plates hidden, where the arrows in the figure indicate the flow direction of the water-cooling liquid in the flow area of ​​the water-cooling channel.

[0029] Description of Figure Numbers:

[0030]

[0031]

[0032] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship and movement status of the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection, indirect connection through an intermediate medium, or abutment; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] At present, a vehicle includes a vehicle thermal management system, which includes a vehicle thermal management device. The vehicle thermal management device includes a compressor, a condenser, an expansion valve, an evaporator, a subcooler, a liquid reservoir, and a connecting pipe. The connecting pipe is used to conduct the compressor, condenser, expansion valve, evaporator, subcooler, and liquid reservoir. However, the compressor, condenser, expansion valve, evaporator, subcooler, and liquid reservoir are distributed relatively dispersedly, resulting in a long length of the connecting pipe, which requires the vehicle thermal management device to be filled with more refrigerant, resulting in lower vehicle safety. To this end, the present invention proposes a plate heat exchanger, which is intended to help reduce the length of the connecting pipe, so that the vehicle thermal management device requires less refrigerant to be filled, thereby increasing vehicle safety.

[0038] Reference Figures 1 to 11In one embodiment of the present invention, the plate heat exchanger 200 has a first side 210 and a second side 220 that oppose each other along its thickness. The plate heat exchanger 200 is provided with multiple flow channels 300, including subcooling channels 310 and condensing channels 320. The subcooling channels 310 have one end located on the first side 210 and the other end located on the second side 220. Thus, the plate heat exchanger 200 integrates a condenser corresponding to the condensing channels 320 and a subcooler corresponding to the subcooling channels 310. This helps reduce the length of the connecting pipes, requiring less refrigerant to be refilled into the vehicle thermal management device 100, thereby improving vehicle safety.

[0039] The two ends of the condensing channel 320 can be disposed in various locations. Optionally, in one embodiment, both ends of the condensing channel 320 are disposed on the first side 210. However, the present design is not limited thereto. In other embodiments, one end of the condensing channel 320 is disposed on the first side 210 and the other end is disposed on the second side 220.

[0040] Optionally, in one embodiment, the subcooling channel 310 has a first inlet end 311 located on the first side 210 and a first outlet end 312 located on the second side 220. Furthermore, the condensing channel 320 has a second inlet end 321 and a second outlet end 322, both located on the first side 210. Thus, the first inlet end 311 and the second outlet end 322 are both located on the first side 210 of the plate heat exchanger 200. This facilitates positioning the liquid reservoir 130 of the vehicle thermal management device 100 on the first side 210 so as to directly communicate with the first inlet end 311 and the second inlet end 321, thereby eliminating the connecting pipes between the liquid reservoir 130, the condenser, and the subcooler. This facilitates reducing the length of the connecting pipes, requiring less refrigerant to be added to the vehicle thermal management device 100, thereby improving vehicle safety. However, the present design is not limited thereto. In other embodiments, the supercooling channel 310 has a fourth inlet end disposed on the second side 220 and a fourth outlet end disposed on the first side 210 .

[0041] Optionally, in one embodiment, the flow channel 300 includes a flow region 500. The plate heat exchanger 200 includes multiple stacked heat exchange plates 400. The flow region 500 is defined between adjacent heat exchange plates 400. Flow guide ribs 510 are provided within the flow region 500 to create a curved configuration. This extends the length of the first flow channel 300, allowing for more efficient heat exchange within the first flow channel 300.

[0042] Optionally, in one embodiment, one end of the guide rib 510 is used to limit the bend 520 of the flow area 500. In the length direction of the guide rib 510, the guide rib 510 has a first end and a second end relative to each other, and the second end is used to limit the bend 520 of the flow area 500 as an example. The refrigerant can flow from the first end toward the second end, and when it flows to the second end, the refrigerant flows from the second end toward the first end. In this way, the flow trajectory of the refrigerant in the flow area 500 has a bend 520, for example, the flow trajectory is V-shaped or U-shaped. This extends the length of the first flow channel 300, making the heat exchange of the first flow channel 300 more sufficient. In addition, for the flow trajectory in the flow area 500 that extends along a certain straight direction and has the same length, this solution can make the length and width values ​​of the plate heat exchanger 200 closer, thereby facilitating the layout of the vehicle thermal management device 100. However, the present design is not limited thereto. In other embodiments, the guide ribs 510 may be arranged according to actual needs, as long as the length of the first flow channel 300 can be extended. No limitation is imposed here.

[0043] There are many different relative positions of the flow area 500 of the subcooling channel 310 relative to the flow area 500 of the condensing channel 320. Optionally, in one embodiment, the flow area 500 of the subcooling channel 310 is closer to the first side 210 than the flow area 500 of the condensing channel 320. However, the present design is not limited thereto. In other embodiments, the flow area 500 of the condensing channel 320 is closer to the first side 210 than the flow area 500 of the subcooling channel 310.

[0044] Optionally, in one embodiment, the plurality of flow channels 300 further include water-cooling flow channels 330, and the liquid flow direction within the flow region 500 of the subcooling flow channels 310 and / or the condensing flow channels 320 is opposite to the liquid flow direction within the flow region 500 of the water-cooling flow channels 330. It will be appreciated that the flow region 500 of the cold flow channels 300 and / or the condensing flow channels 320 will be adjacent to the flow region 500 of the water-cooling flow channels 330. This ensures that the liquid within the flow region 500 of the subcooling flow channels 310 and / or the condensing flow channels 320 can always exchange heat with the lower-temperature liquid within the flow region 500 of the water-cooling flow channels 330. This ensures that the refrigerant within the flow region 500 of the subcooling flow channels 310 and / or the condensing flow channels 320 can exchange heat more effectively. However, the present design is not limited to this. In other embodiments, the multiple flow channels 300 also include a water-cooling flow channel 330, and the liquid flow direction in the flow area 500 of the supercooling flow channel 310 and / or the condensing flow channel 320 is the same as the liquid flow direction in the flow area 500 of the water-cooling flow channel 330.

[0045] Optionally, in one embodiment, the water-cooling channel 330 has a third inlet end 331 and a third outlet end 332, both located on the second side 220. However, the present design is not limited thereto. In other embodiments, the water-cooling channel 330 has a fifth inlet end located on the first side 210 and a fifth outlet end located on the second side 220.

[0046] Optionally, in one embodiment, the flow channel 300 further includes a converging section 600 at one end of the flow channel 300 and a diverting section 700 at the other end of the flow channel 300. The flow region 500 connects the converging section 600 and the diverting section 700. Multiple flow regions 500 are provided, and the converging section 600 and the diverting section 700 are respectively disposed through multiple heat exchange plates 400. It will be appreciated that liquid enters from the diverting section 700 and enters the multiple flow regions 500. Liquid flowing out of the multiple flow regions 500 converges at the converging section 600 and ultimately exits the plate heat exchanger 200. In this way, each flow region 500 of the different flow channels 300 is fully utilized, maintaining a high heat exchange efficiency for the liquid within the flow regions 500. However, the present design is not limited thereto. In other embodiments, the flow channel 300 further includes an input section having one end of the flow channel 300 and an output section having the other end of the flow channel 300. The liquid flowing into the input section will sequentially pass through multiple flow areas 500 and flow to the output section, and finally flow out of the plate heat exchanger 200 from the output section.

[0047] There are many different positions for the subcooling channel 310 and the refrigerant channel 300. Optionally, in one embodiment, the diverter section 700 of the subcooling channel 310 and the confluence section 600 of the condensing channel 320 are arranged in parallel and close to each other, and the confluence section 600 of the subcooling channel 310 and the diverter section 700 of the condensing channel 320 are arranged in parallel and close to each other. This facilitates the arrangement of the subcooling channel 310 and the condensing channel 320. Specifically, once the required length of the subcooling channel 310 or the condensing channel 320 in the flow area 500 is determined, the other can also be determined accordingly, which helps reduce design costs. In addition, it is also beneficial to make both the subcooling channel 310 and the condensing channel 320 longer, so that the refrigerant in the subcooling channel 310 can fully exchange heat, and the refrigerant in the condensing channel 320 can fully exchange heat. Furthermore, in one embodiment, the distance between the diversion section 700 of the supercooling channel 310 and the confluence section 600 of the condensing channel 320 is less than 30 mm, and the distance between the confluence section 600 of the supercooling channel 310 and the diversion section 700 of the condensing channel 320 is less than 30 mm.

[0048] However, the present design is not limited thereto. In other embodiments, the positional relationship between the supercooling channel 310 and the refrigerant channel 300 may be other, as long as the design of the supercooling channel 310 and the refrigerant channel 300 is convenient.

[0049] The present invention also proposes a vehicle thermal management device 100, which includes the aforementioned plate heat exchanger 200. The specific structure of the plate heat exchanger 200 refers to the above-mentioned embodiment. Since the vehicle thermal management device 100 adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0050] Optionally, in one embodiment, the vehicle thermal management system includes a compressor 110, an evaporator 120, a plate heat exchanger 200, and a liquid reservoir 130 through which refrigerant flows. Furthermore, in one embodiment, the compressor 110, the evaporator 120, the plate heat exchanger 200, and the liquid reservoir 130 are integrated.

[0051] The present invention also proposes a vehicle thermal management system, which includes the aforementioned vehicle thermal management device 100. The specific structure of the vehicle thermal management device 100 refers to the above-mentioned embodiment. Since this vehicle thermal management system adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0052] The present invention also proposes a vehicle, which includes the aforementioned vehicle thermal management system. The specific structure of the vehicle thermal management system refers to the above-mentioned embodiment. Since this vehicle adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0053] The above descriptions are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present description and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A plate heat exchanger, characterized in that: In the thickness direction of the plate heat exchanger, the plate heat exchanger has a first side and a second side opposite to each other. The plate heat exchanger is provided with a plurality of flow channels, including subcooling flow channels and condensing flow channels. One end of the subcooling flow channel is provided on the first side, and the other end is provided on the second side.

2. The plate heat exchanger according to claim 1, characterized in that Both ends of the condensation flow channel are arranged on the first side.

3. The plate heat exchanger according to claim 2, characterized in that The supercooling channel has a first inlet end provided on the first side and a first outlet end provided on the second side.

4. The plate heat exchanger according to any one of claims 1 to 3, characterized in that: The flow channel includes a flow area, the plate heat exchanger includes a plurality of stacked heat exchange plates, the flow area is limited between two adjacent heat exchange plates, and guide ribs are provided in the flow area to make the flow area bent.

5. The plate heat exchanger according to claim 4, characterized in that One end of the guide rib is used to limit a bending portion of the flow area.

6. The plate heat exchanger according to claim 4, characterized in that A flow area of ​​the supercooling flow channel is closer to the first side than a flow area of ​​the condensing flow channel.

7. The plate heat exchanger according to claim 4, characterized in that The plurality of flow channels further include water-cooling flow channels, and the liquid flow direction in the flow area of ​​the supercooling flow channel and / or the condensing flow channel is opposite to the liquid flow direction in the flow area of ​​the water-cooling flow channel.

8. The plate heat exchanger according to claim 4, characterized in that The flow channel also includes a converging section having one end of the flow channel and a diverting section having the other end of the flow channel. The flow area connects the converging section and the diverting section. There are multiple flow areas, and the converging section and the diverting section are respectively passed through multiple heat exchange plates.

9. The plate heat exchanger according to claim 8, characterized in that The converging section of the supercooling channel and the converging section of the condensing channel are arranged in parallel and close to each other, and the diverting section of the supercooling channel and the diverting section of the condensing channel are arranged in parallel and close to each other.

10. A thermal management device for a vehicle, characterized in that: The method comprises the plate heat exchanger according to any one of claims 1 to 9.

11. A vehicle thermal management system, characterized in that: The vehicle thermal management device comprises the vehicle thermal management device as claimed in claim 10.

12. A vehicle, characterized in that: The vehicle thermal management system according to claim 11 is included.

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