Heat exchanger, air conditioning system and vehicle

Abstract

The utility model discloses a heat exchanger, an air conditioning system and a vehicle. The heat exchanger comprises a plurality of heat exchange layers, each heat exchange layer is provided with a flow channel, the heat exchange layers are wound to be of a multi-layer structure, every two adjacent heat exchange layers are attached, in every two adjacent heat exchange layers, the flow channel of one heat exchange layer is used for circulating a first fluid, and the flow channel of the other heat exchange layer is used for circulating a second fluid. The temperature of the second fluid is lower than the temperature of the first fluid. According to the heat exchanger, the multiple heat exchange layers are wound to form the multi-layer structure, every two adjacent heat exchange layers are attached, so that the heat exchanger is compact in structure, the effective heat exchange area can be increased, and the overall heat exchange efficiency of the heat exchanger is improved.

Description

Technical Field

[0001] The utility model relates to the field of refrigeration and low temperature technology, in particular to a heat exchanger, an air conditioning system and a vehicle. Background Art

[0002] Heat pump systems have begun to be used in various industries, such as the thermal management system of electric vehicles, in which the regenerator is a key heat exchanger. The high-temperature and high-pressure refrigerant exchanges heat with the low-temperature and low-pressure refrigerant in the regenerator. Adding a regenerator to the refrigeration cycle can effectively improve the energy efficiency of the system. In the related technology, the overall structure of the regenerator is not compact enough and the heat exchange efficiency is not high. Utility Model Content

[0003] The utility model provides a heat exchanger, an air conditioning system and a vehicle.

[0004] The heat exchanger of the embodiment of the present application includes multiple heat exchange layers, each heat exchange layer has a flow channel, and the multiple heat exchange layers are wound into a multi-layer structure. Two adjacent heat exchange layers are bonded together. Among the two adjacent heat exchange layers, the flow channel of one heat exchange layer is used to circulate a first fluid, and the flow channel of the other heat exchange layer is used to circulate a second fluid. The temperature of the second fluid is lower than the temperature of the first fluid.

[0005] In the heat exchanger of the embodiment of the present application, multiple heat exchange layers are wound into a multi-layer structure, and two adjacent heat exchange layers are bonded together, so that the heat exchanger structure is compact and the effective heat exchange area can be increased, thereby improving the overall heat exchange efficiency of the heat exchanger.

[0006] In certain embodiments, in two adjacent heat exchange layers, the flow direction of the first fluid in one of the heat exchange layers is opposite to the flow direction of the second fluid in the other heat exchange layer.

[0007] In this way, the first fluid and the second fluid flow in opposite directions in two adjacent heat exchange layers, which reduces the heat exchange temperature difference and reduces the irreversible loss in the heat exchange process.

[0008] In certain embodiments, each heat exchange layer has a plurality of flow channels, and the plurality of flow channels are spaced apart along the height direction of the heat exchanger.

[0009] In this way, the fluid in each heat exchange layer can flow in multiple flow channels respectively, realizing fluid diversion. In addition, multiple flow channels can increase the heat exchange area and improve the heat exchange efficiency of the heat exchanger.

[0010] In some embodiments, the heat exchange layer has a first mixed flow channel, the first mixed flow channel is located in the middle of the flow channel extension direction, and the first mixed flow channel separates the plurality of flow channels and is connected to the flow channels.

[0011] In this way, the first mixing channel can mix the fluids in the multiple flow channels, improve the uniformity of the temperature distribution of the fluids, and enhance the heat exchange efficiency of the heat exchanger.

[0012] In some embodiments, the heat exchange layer includes a surrounding wall and multiple partition walls, the multiple partition walls are spaced apart inside the surrounding wall to separate the spaces of the surrounding wall into multiple flow channels, each partition wall is provided with a through hole, and the multiple through holes form at least a part of the first mixed flow channel.

[0013] In this way, the multiple baffle walls enable the heat exchange layer to form multiple flow channels, which facilitates the flow of fluid. At the same time, the baffle walls can enhance the structural strength of the heat exchange layer and reduce the internal pressure of the fluid on the heat exchange layer.

[0014] In certain embodiments, the heat exchange layer includes two ends, and the flow channel extends from one end to the other end, wherein one end is used for fluid to flow in, and the other end is used for fluid to flow out.

[0015] In this way, the fluid can enter the heat exchange layer from one end, flow along the flow channel to the other end, and then flow out of the heat exchange layer.

[0016] In certain embodiments, a joint is provided at the end, and the joint is used for allowing the fluid to pass into the flow channel or for allowing the fluid to flow out of the flow channel.

[0017] In this way, the fluid can flow into or out of the flow channel through the joint.

[0018] In some embodiments, a second mixing flow channel is formed at the end, the second mixing flow channel is located at one end of the flow channel, and the second mixing flow channel connects multiple flow channels and joints.

[0019] In this way, the second mixed flow channel can divert the fluid flowing into the heat exchange layer, and can also mix the fluid flowing out of the heat exchange layer.

[0020] In some embodiments, the heat exchange layer is spirally wound; or, along the winding direction of the heat exchange layer, the heat exchange layer includes straight segments and curved segments connected to the straight segments.

[0021] In this way, the heat exchange layer is in a coiled shape so that the heat exchanger can be tightly combined into a whole, the heat exchanger structure is compact, and the heat exchange efficiency of the heat exchanger is improved.

[0022] In certain embodiments, the number of heat exchange layers is two.

[0023] In this way, the two heat exchange layers simplify the structure of the heat exchanger, reduce the weight of the heat exchanger, and enhance the practicability of the heat exchanger.

[0024] In certain embodiments, the equivalent hydraulic diameter of the flow channel is less than 1 mm.

[0025] In this way, the smaller the equivalent hydraulic diameter of the flow channel is, the more flow channels are formed in the heat exchange layer, and the stronger the pressure resistance of the flow channel is.

[0026] The air conditioning system according to the embodiment of the present application includes a heat exchanger.

[0027] In this way, one of the heat exchange layers of the heat exchanger is bonded to the adjacent heat exchange layer, making the heat exchanger structure compact and increasing the effective heat exchange area, thereby improving the overall heat exchange efficiency of the heat exchanger, thereby effectively improving the energy efficiency of the air-conditioning system and reducing the energy consumption of the air-conditioning system.

[0028] A vehicle according to an embodiment of the present application includes an air conditioning system.

[0029] In this way, adding the air-conditioning system of the embodiment of the present application to the vehicle can improve the cooling efficiency of the vehicle, reduce the energy consumption of the vehicle, and thus improve the quality of the entire vehicle.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0032] Figure 1 It is a structural schematic diagram of a heat exchanger according to an embodiment of the utility model;

[0033] Figure 2 It is a structural schematic diagram of a heat exchanger according to an embodiment of the utility model;

[0034] Figure 3 It is a structural schematic diagram of a heat exchanger according to an embodiment of the utility model;

[0035] Figure 4 It is a flow diagram of the first fluid in an embodiment of the utility model;

[0036] Figure 5 It is a flow diagram of the second fluid in an embodiment of the utility model;

[0037] Figure 6 It is a structural schematic diagram of a heat exchanger according to an embodiment of the utility model;

[0038] Figure 7 It is a flow diagram of the first fluid in an embodiment of the utility model;

[0039] Figure 8 It is a flow diagram of the second fluid in an embodiment of the utility model;

[0040] Fig. 9 It is a schematic structural diagram of a first mixed flow channel in an embodiment of the utility model;

[0041] Fig.10 It is a schematic structural diagram of a first mixed flow channel in an embodiment of the utility model;

[0042] Fig.11 It is a structural schematic diagram of the end portion of an embodiment of the utility model;

[0043] Fig.12 It is a structural schematic diagram of the end portion of an embodiment of the utility model;

[0044] Fig.13 It is a schematic structural diagram of a vehicle according to an embodiment of the utility model.

[0045] Explanation of the reference numerals: 100, heat exchanger; 10, heat exchange layer; 11, first heat exchange layer; 12, second heat exchange layer; 13, surrounding wall; 14, partition wall; 15, through hole; 20, flow channel; 30, first mixed flow channel; 40, end; 41, joint; 42, second mixed flow channel; 200, air conditioning system; 1000, vehicle. DETAILED DESCRIPTION

[0046] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0048] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0049] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0051] See also Figure 1 and Figure 2 The heat exchanger 100 of the embodiment of the present application includes a plurality of heat exchange layers 10, each heat exchange layer 10 has a flow channel 20, and the plurality of heat exchange layers 10 are wound into a multi-layer structure, and two adjacent heat exchange layers 10 are bonded together. In the two adjacent heat exchange layers 10, the flow channel 20 of one heat exchange layer 10 is used to circulate a first fluid, and the flow channel 20 of the other heat exchange layer 10 is used to circulate a second fluid, and the temperature of the second fluid is lower than the temperature of the first fluid.

[0052] In the heat exchanger 100 of the embodiment of the present application, multiple heat exchange layers 10 are wound into a multi-layer structure, and two adjacent heat exchange layers 10 are bonded together, so that the heat exchanger 100 has a compact structure and can increase the effective heat exchange area, thereby improving the overall heat exchange efficiency of the heat exchanger 100.

[0053] Specifically, the heat exchanger 100 is a device for transferring heat between materials between two or more fluids at different temperatures. The heat exchanger 100 transfers heat from a first fluid with a higher temperature to a second fluid with a lower temperature. The heat exchanger 100 can be adapted to the heat exchange path of various refrigeration systems such as dehumidifiers, refrigerators, freezers, and water makers.

[0054] The heat exchange layer 10 can be made of metal materials, including but not limited to aluminum, copper, etc. The heat exchange layer 10 can be formed into a flat tube shape by extrusion technology. The number of heat exchange layers 10 can be two, three, four, etc. Multiple heat exchange layers 10 can be tightly connected by welding methods such as brazing. The first fluid and the second fluid are alternately distributed in multiple heat exchange layers 10, that is, the first fluid and the second fluid are distributed in any two adjacent heat exchange layers 10, and the heat of the first fluid and the second fluid can be transferred by heat conduction through the heat exchange layer 10. When the number of heat exchange layers 10 is three, the fluids in the three heat exchange layers 10 can be the first fluid, the second fluid, the first fluid, or the second fluid, the first fluid, and the second fluid. When the number of heat exchange layers 10 is four, the fluids in the four heat exchange layers 10 can be the first fluid, the second fluid, the first fluid, the second fluid, or the second fluid, the first fluid, the second fluid, and the first fluid.

[0055] The flow channel 20 is a channel for the flow of the first fluid and the second fluid. The flow channel 20 is located inside the heat exchange layer 10. The flow channel 20 extends along the winding direction of the heat exchange layer 10. The cross-sectional shape of the flow channel 20 can be a regular shape such as a circle, an ellipse, a rectangle, or an irregular shape.

[0056] See also Figure 3-Figure 8 In some embodiments, in two adjacent heat exchange layers 10 , the flow direction of the first fluid in one heat exchange layer 10 is opposite to the flow direction of the second fluid in the other heat exchange layer 10 .

[0057] In this way, the first fluid and the second fluid flow in opposite directions in two adjacent heat exchange layers 10, which reduces the heat exchange temperature difference and reduces the irreversible loss in the heat exchange process.

[0058] Specifically, the first fluid may flow in the first heat exchange layer 11, and the second fluid may flow in the second heat exchange layer 12. In one embodiment, the first fluid in the first heat exchange layer 11 may flow in a clockwise direction, and the second fluid in the second heat exchange layer 12 may flow in a counterclockwise direction.

[0059] See also Figure 1 In some embodiments, each heat exchange layer 10 has a plurality of flow channels 20 , and the plurality of flow channels 20 are spaced apart along the height direction of the heat exchanger 100 .

[0060] In this way, the fluid in each heat exchange layer 10 can flow in the multiple flow channels 20 respectively, thereby realizing fluid diversion. In addition, the multiple flow channels 20 can increase the heat exchange area and improve the heat exchange efficiency of the heat exchanger 100.

[0061] Specifically, the number of the flow channels 20 can be three, four, five, six, etc. The number and size of the flow channels 20 can be designed according to the pressure, flow rate and heat exchange requirements of the fluid. The number of flow channels 20 in each heat exchange layer 10 can be the same or different. Figure 1 , the number of flow channels 20 of the first heat exchange layer 11 is five, and the number of flow channels 20 of the second heat exchange layer 12 is eight. The plurality of flow channels 20 may be distributed along the height direction of the heat exchanger 100, and the height direction of the heat exchanger 100 may be perpendicular to the flow direction of the flow channels 20. For example, the height direction of the heat exchanger 100 may be the gravity direction of the heat exchanger 100. The shapes and sizes of the plurality of flow channels 20 may be the same or different.

[0062] See also Figure 2 , Fig. 9 and Fig.10 In some embodiments, the heat exchange layer 10 has a first mixing flow channel 30 , which is located in the middle of the extension direction of the flow channel 20 , and the first mixing flow channel 30 separates the plurality of flow channels 20 and is connected to the flow channels 20 .

[0063] In this way, the first mixing channel 30 can mix the fluids in the plurality of flow channels 20 , thereby improving the uniformity of temperature distribution of the fluids and increasing the heat exchange efficiency of the heat exchanger 100 .

[0064] Specifically, the first mixing channel 30 is used to mix the fluids in the multiple flow channels 20 and then divide them into each flow channel 20. The cross-sectional shape of the first mixing channel 30 can be circular, elliptical, rectangular, etc. The number of the first mixing channel 30 can be one or more, for example, three, four, five, etc. The multiple first mixing channels 30 can be arranged at intervals in the middle of the extending direction of the flow channel 20 along the height direction of the heat exchanger 100. Along the flow direction of the fluid, the fluids in the multiple flow channels 20 enter the first mixing channel 30 to mix and then divide them into the multiple flow channels 20.

[0065] See also Figure 1 and Fig.10 In some embodiments, the heat exchange layer 10 includes a surrounding wall 13 and a plurality of partition walls 14. The plurality of partition walls 14 are spaced apart in the surrounding wall 13 to separate the spaces of the surrounding wall 13 into a plurality of flow channels 20. Each partition wall 14 is provided with a through hole 15. The plurality of through holes 15 form at least a portion of the first mixed flow channel 30.

[0066] Thus, the plurality of baffle walls 14 enable the heat exchange layer 10 to form a plurality of flow channels 20 to facilitate fluid flow. Meanwhile, the baffle walls 14 can enhance the structural strength of the heat exchange layer 10 and reduce the internal fluid pressure on the heat exchange layer 10 .

[0067] Specifically, the surrounding wall 13 may be rectangular along the direction perpendicular to the flow of the fluid. The baffle wall 14 may be a plate-like structure, and a plurality of baffle walls 14 are arranged in the surrounding wall 13 along the height direction of the heat exchanger 100. The surrounding wall 13 and the baffle wall 14 may be mechanically connected or integrally formed. The number and thickness of the baffle walls 14 may be designed according to the pressure, flow rate and heat exchange requirements of the fluid. The number of baffle walls 14 of two adjacent heat exchange layers 10 may be the same or different. Figure 1 The number of the barrier walls 14 of the first heat exchange layer 11 is four, and the number of the flow channels 20 formed by the first heat exchange layer 11 is five. The number of the barrier walls 14 of the second heat exchange layer 12 is seven, and the number of the flow channels 20 formed by the second heat exchange layer 12 is eight. The via holes 15 can be round holes or square holes. The via holes 15 penetrate the barrier walls 14 along the thickness direction of the barrier walls 14. Multiple via holes 15 connect multiple flow channels 20 to form a first mixed flow channel 30.

[0068] See also Figure 1 and Figure 4 In some embodiments, the heat exchange layer 10 includes two ends 40, and the flow channel 20 extends from one end 40 to the other end 40, wherein one end 40 is used for fluid to flow in, and the other end 40 is used for fluid to flow out.

[0069] In this way, the fluid can enter the heat exchange layer 10 from one end 40 , flow along the flow channel 20 to the other end 40 , and then flow out of the heat exchange layer 10 .

[0070] Specifically, the cross-sectional shape of the end portion 40 may be circular, elliptical, rectangular, etc., and the end portion 40 may be tightly connected to the heat exchange layer 10 by welding, or may be an integral structure. A heat exchange layer 10 may include two end portions 40, and the two end portions 40 are respectively located at the two ends of the flow channel 20. In some embodiments, the end portion 40 where the first fluid flows into the flow channel 20 and the end portion 40 where the second fluid flows out of the flow channel 20 are located on the same side, and the end portion 40 where the first fluid flows out of the flow channel 20 and the end portion 40 where the second fluid flows into the flow channel 20 are located on the same side.

[0071] See also Figure 1 and Figure 4 In some embodiments, the end portion 40 is provided with a joint 41 , and the joint 41 is used for allowing the fluid to pass into the flow channel 20 or for allowing the fluid to flow out of the flow channel 20 .

[0072] In this way, the fluid can flow into or out of the flow channel 20 through the joint 41 .

[0073] Specifically, the joint 41 is used to connect with an external pipeline. The cross-sectional shape of the joint 41 can be circular, elliptical, rectangular, etc. The joint 41 can extend in a direction perpendicular to the flow channel 20 or in a direction parallel to the flow channel 20. The form of the joint 41 can be determined by the structure of the components connected to the heat exchanger 100, and the direction, size and shape of the joint 41 can be designed according to the system in which the heat exchanger 100 is located. In some embodiments, the joint 41 of the first fluid flowing into the flow channel 20 and the joint 41 of the second fluid flowing out of the flow channel 20 are located on the same side, and the joint 41 of the first fluid flowing out of the flow channel 20 and the joint 41 of the second fluid flowing into the flow channel 20 are located on the same side.

[0074] See also Figure 1 , Fig.11 and Fig.12 In some embodiments, a second mixing channel 42 is formed at the end 40 , and the second mixing channel 42 is located at one end of the flow channel 20 , and the second mixing channel 42 connects the multiple flow channels 20 and the joint 41 .

[0075] In this way, the second mixing channel 42 can split the fluid flowing into the heat exchange layer 10 , and can also mix the fluid flowing out of the heat exchange layer 10 .

[0076] Specifically, the second mixing channel 42 is used to mix the fluids of multiple flow channels 20, and can also be used to divert the fluid to each flow channel 20. The cross-sectional shape of the second mixing channel 42 can be circular, elliptical, rectangular, etc. The second mixing channel 42 can be arranged perpendicular to the flow direction of the fluid, and can also be arranged parallel to the flow channel 20 of the fluid. The fluid can enter the second mixing channel 42 at one end of the flow channel 20 through the joint 41 and be diverted to each flow channel 20; the fluid can also flow from each flow channel 20 into the second mixing channel 42 at the other end of the flow channel 20, mix, and then flow out through the joint 41.

[0077] See also Figure 3 and Figure 6 In some embodiments, the heat exchange layer 10 is spirally wound; or, along the winding direction of the heat exchange layer 10, the heat exchange layer 10 includes a straight segment and a curved segment connected to the straight segment.

[0078] In this way, the heat exchange layer 10 is in a wound shape so that the heat exchanger 100 can be tightly combined into a whole, and the heat exchanger 100 has a compact structure, thereby improving the heat exchange efficiency of the heat exchanger 100.

[0079] Specifically, the heat exchange layer 10 can be wound into a multi-layer structure according to an involute composed of curves, or can be wound into a multi-layer structure according to an involute composed of curves and straight lines. The first mixed flow channel 30 can be arranged in the straight section of the heat exchange layer 10.

[0080] See also Figure 3 In some embodiments, the number of the heat exchange layers 10 is two.

[0081] In this way, the two heat exchange layers 10 simplify the structure of the heat exchanger 100 , reduce the weight of the heat exchanger 100 , and enhance the practicability of the heat exchanger 100 .

[0082] Specifically, the two heat exchange layers 10 can be tightly connected by welding such as brazing, the first heat exchange layer 11 flows the first fluid, and the second heat exchange layer 12 flows the second fluid in reverse direction.

[0083] In certain embodiments, the equivalent hydraulic diameter of the flow channel 20 is less than 1 mm.

[0084] In this way, the smaller the equivalent hydraulic diameter of the flow channel 20 is, the more the number of flow channels 20 formed in the heat exchange layer 10 is, and the stronger the pressure resistance of the flow channel 20 is.

[0085] Specifically, the equivalent hydraulic diameter refers to four times the ratio of the flow cross-sectional area to the perimeter of the flow channel 20. The equivalent hydraulic diameter of the flow channel 20 can be 0.1 mm, 0.3 mm, 0.5 mm, 0.7 mm, 0.9 mm, etc.

[0086] The air conditioning system 200 according to the embodiment of the present application includes a heat exchanger 100 .

[0087] In this way, one of the heat exchange layers 10 of the heat exchanger 100 is bonded to the adjacent heat exchange layer 10, making the heat exchanger 100 compact in structure and increasing the effective heat exchange area, thereby improving the overall heat exchange efficiency of the heat exchanger 100, thereby effectively improving the energy efficiency of the air-conditioning system 200 and reducing the energy consumption of the air-conditioning system 200.

[0088] Specifically, the number of the heat exchangers 100 may be one or more, and a plurality of heat exchangers 100 may be stacked and connected by welding according to the heat exchange requirement of the air-conditioning system 200 .

[0089] See also Fig.13 , the vehicle 1000 of the embodiment of the present application includes an air conditioning system 200.

[0090] In this way, adding the air conditioning system 200 of the embodiment of the present application to the vehicle 1000 can improve the cooling efficiency of the vehicle 1000, reduce the energy consumption of the vehicle 1000, and thus improve the quality of the entire vehicle.

[0091] It should be noted that the air conditioning system 200 of the embodiment of the present application can also be applied to vehicles such as fuel vehicles and electric vehicles.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0093] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heat exchanger, characterized in that: It comprises a plurality of heat exchange layers, each of which has a flow channel. The plurality of heat exchange layers are wound into a multi-layer structure, and two adjacent layers of the heat exchange layers are bonded together. Among the two adjacent layers of the heat exchange layers, the flow channel of one of the heat exchange layers is used for circulating a first fluid, and the flow channel of the other heat exchange layer is used for circulating a second fluid, and the temperature of the second fluid is lower than that of the first fluid.

2. The heat exchanger according to claim 1, characterized in that: In two adjacent heat exchange layers, the flow direction of the first fluid in one of the heat exchange layers is opposite to the flow direction of the second fluid in the other heat exchange layer.

3. The heat exchanger according to claim 1, characterized in that: The number of the flow channels of each heat exchange layer is multiple, and the multiple flow channels are arranged at intervals along the height direction of the heat exchanger.

4. The heat exchanger according to claim 3, characterized in that The heat exchange layer has a first mixed flow channel, which is located in the middle of the extending direction of the flow channel. The first mixed flow channel separates a plurality of the flow channels and is in communication with the flow channels.

5. The heat exchanger according to claim 4, characterized in that: The heat exchange layer includes a surrounding wall and a plurality of partition walls, wherein the plurality of partition walls are arranged at intervals within the surrounding wall to separate the spaces of the surrounding wall into a plurality of flow channels, each of the partition walls is provided with a via hole, and the plurality of via holes form at least a portion of the first mixed flow channel.

6. The heat exchanger according to claim 1, characterized in that The heat exchange layer includes two ends, and the flow channel extends from one of the ends to the other end, wherein one of the ends is used for fluid to flow in, and the other end is used for fluid to flow out.

7. The heat exchanger according to claim 6, characterized in that The end is provided with a joint, and the joint is used for allowing fluid to pass into the flow channel or for allowing fluid to flow out of the flow channel.

8. The heat exchanger according to claim 7, characterized in that A second mixing flow channel is formed at the end portion, the second mixing flow channel is located at one end of the flow channel, and the second mixing flow channel connects the plurality of flow channels and the joint.

9. The heat exchanger according to claim 1, characterized in that: The heat exchange layer is in a spirally wound shape; or, along the winding direction of the heat exchange layer, the heat exchange layer includes a straight segment and a curved segment connected to the straight segment.

10. The heat exchanger according to claim 1, characterized in that The number of the heat exchange layers is two.

11. The heat exchanger according to claim 1, characterized in that The equivalent hydraulic diameter of the flow channel is less than 1 mm.

12. An air conditioning system, characterized in that: A heat exchanger comprising any one of claims 1-11.

13. A vehicle, characterized in that: Includes the air conditioning system as claimed in claim 12.

Images