An air conditioning circuit and a car

Abstract

This invention provides an air conditioning circuit and a vehicle, relating to the field of automotive air conditioning circuits. The air conditioning circuit includes a main circuit and a regenerative circuit connected to each other. The main circuit is equipped with a first heat exchanger and a second heat exchanger, and is connected to the passenger compartment and the surrounding environment. The air conditioning circuit includes multiple four-way valves; by changing the connection mode of these four-way valves, the air conditioning circuit can be configured as a cooling circuit or a heating circuit to meet the needs of the passenger compartment for cooling in summer and heating in winter. Furthermore, this air conditioning circuit incorporates a regenerative circuit and can utilize the circulating air from the passenger compartment, thereby reducing compressor power consumption and increasing cooling or heating capacity. This effectively improves the coefficient of performance (COP) under high-temperature conditions in summer and the COP under low-temperature conditions in winter, thus reducing the energy consumption of the air conditioning circuit and improving the overall vehicle economy.

Description

Technical Field

[0001] This application relates to the field of automotive air conditioning circuits, and in particular to a dehumidification device and method for batteries. Background Technology

[0002] To control temperature more precisely, existing automotive air conditioning systems typically employ electrically driven compressors and efficient control strategies. However, while achieving both cooling and heating effects, these systems consume a significant amount of energy. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide an air conditioning circuit and a car to solve the problem of high energy consumption in existing car air conditioning systems.

[0004] In accordance with the above objectives, a first aspect of the present invention provides an air conditioning circuit in which a refrigerant circulates, wherein the air conditioning circuit includes a main circuit and a regenerative circuit connected to each other, the main circuit is provided with a first heat exchanger and a second heat exchanger and is connected to the passenger compartment and the ambient space; the air conditioning circuit is provided with a plurality of four-way valves, and by changing the connection mode of the four-way valves, the air conditioning circuit can be configured as a refrigeration circuit or a heating circuit.

[0005] Preferably, when the air conditioning circuit is a refrigeration circuit, the first heat exchanger is a condenser and the second heat exchanger is an evaporator; when the air conditioning circuit is a heating circuit, the first heat exchanger is an evaporator and the second heat exchanger is a condenser.

[0006] Preferably, both the first heat exchanger and the second heat exchanger are configured as double-effect heat exchangers.

[0007] Preferably, the main circuit is also equipped with multiple three-way valves.

[0008] Preferably, the main circuit includes a first branch, which includes a first three-way valve, a second three-way valve, and a third three-way valve arranged sequentially; the first port of the first three-way valve is connected to the ambient space; the second port of the first three-way valve is connected to the first port of the second three-way valve; the second port of the second three-way valve is connected to the passenger compartment; and the first port of the third three-way valve is also connected to the passenger compartment.

[0009] The second port of the third three-way valve is connected to the first section of the second heat exchanger, and the third port of the third three-way valve is connected to the second section of the second heat exchanger.

[0010] Preferably, the main circuit further includes a second branch, which includes a first four-way valve, a fourth three-way valve, a second four-way valve, and a fifth three-way valve arranged in sequence.

[0011] The first port of the first four-way valve is connected to the first section of the first heat exchanger, the second port of the first four-way valve is connected to the third port of the first three-way valve, the third port of the first four-way valve is connected to the second section of the first heat exchanger, and the fourth port of the first four-way valve is connected to the first port of the fourth three-way valve.

[0012] The second port of the fourth three-way valve is connected to the third port of the second three-way valve, and the third port of the fourth three-way valve is connected to the fourth port of the second four-way valve.

[0013] The first port of the second four-way valve is connected to the second section of the second heat exchanger, the second port of the second four-way valve is connected to the first port of the fifth three-way valve, and the third port of the second four-way valve is connected to the first section of the second heat exchanger.

[0014] The second port of the fifth three-way valve is connected to the first section of the first heat exchanger, and the third port of the fifth three-way valve is connected to the second section of the first heat exchanger.

[0015] Preferably, the main circuit further includes a third branch, on which an expansion valve is provided, and the two ends of the expansion valve are respectively connected to the second section of the first heat exchanger and the first section of the second heat exchanger.

[0016] Preferably, the regenerative circuit includes a regenerator, a third four-way valve, and a compressor; the first and second ports of the regenerator are respectively connected to the first section of the first heat exchanger and the second section of the second heat exchanger; the third port of the regenerator is connected to the fourth port of the third four-way valve; and the fourth port of the regenerator is connected to the second port of the third four-way valve.

[0017] The first port of the third four-way valve is connected to the first port of the compressor, and the third port of the third four-way valve is connected to the second port of the compressor.

[0018] Preferably, when the air conditioning circuit is formed as a refrigeration circuit, the first and second ports of each of the four-way valves are connected and the third and fourth ports are connected; when the air conditioning circuit is formed as a heating circuit, the first and fourth ports of each of the four-way valves are connected and the second and third ports are connected.

[0019] According to a second aspect of the invention, an automobile is provided, wherein the automobile is provided with an air conditioning circuit as described above.

[0020] According to the air conditioning circuit and automobile of the present invention, multiple four-way valves are provided in the air conditioning circuit. By changing the connection mode of the four-way valves, the air conditioning circuit can be formed into a cooling circuit or a heating circuit to meet the needs of the passenger compartment for cooling in summer and heating in winter. In addition, the air conditioning circuit introduces a regenerative circuit and can utilize the circulating air in the passenger compartment. This can reduce the power consumption of the compressor and increase the cooling or heating capacity, thereby effectively improving the coefficient of performance (COP) under high temperature conditions in summer and the COP under low temperature conditions in winter, thereby reducing the energy consumption of the air conditioning circuit and improving the overall vehicle economy.

[0021] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of an air conditioning circuit being formed as a refrigeration circuit according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of an air conditioning circuit being configured as a heating circuit according to an embodiment of the present invention;

[0025] Figure 3 This is a temperature entropy diagram of the air conditioning circuit according to the present invention and the air conditioning system in the prior art during operation;

[0026] Figure 4 This is an air conditioning circuit diagram according to the present invention and a pressure-enthalpy diagram of an air conditioning system in the prior art during operation.

[0027] Icons: 11-First three-way valve; 12-Second three-way valve; 13-Third three-way valve; 14-Fourth three-way valve; 15-Fifth three-way valve; 16-Expansion valve; 21-First four-way valve; 22-Second four-way valve; 23-Third four-way valve; 31-First heat exchanger; 32-Second heat exchanger; 41-Regenerator; 42-Compressor; 51-Ambient space; 52-Crew compartment. Detailed Implementation

[0028] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0029] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0030] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0031] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0032] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0033] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0034] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0035] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0036] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0037] According to a first aspect of the present invention, an air conditioning circuit is provided, such as Figures 1 to 2 As shown, the air conditioning circuit in this embodiment includes a main circuit and a regenerative circuit connected to each other. The main circuit is equipped with a first heat exchanger 31 and a second heat exchanger 32, and is connected to the passenger compartment 52 and the ambient space 51 (i.e., the exterior space of the vehicle). Furthermore, this air conditioning circuit is equipped with multiple three-way valves and four-way valves. By changing the connection mode of the four-way valves, the air conditioning circuit can be configured as a cooling circuit or a heating circuit. The specific connection and positional relationships of the above-mentioned components of the air conditioning circuit according to the present invention will be described in detail below.

[0038] In this embodiment, both the first heat exchanger 31 and the second heat exchanger 32 are double-effect heat exchangers. When the air conditioning circuit is a refrigeration circuit, the first heat exchanger 31 is a double-effect condenser, and the second heat exchanger 32 is a double-effect evaporator. When the air conditioning circuit is a heating circuit, the first heat exchanger 31 is a double-effect evaporator, and the second heat exchanger 32 is a double-effect condenser. It should be noted that the first heat exchanger 31 and the second heat exchanger 32 being configured as condensers or evaporators means that, depending on the temperature of the gas introduced into the first heat exchanger 31 and the second heat exchanger 32, they can respectively function as condensers or evaporators to achieve the desired heat exchange effect.

[0039] Specifically, the main circuit includes a first branch, which includes a first three-way valve 11, a second three-way valve 12, and a third three-way valve 13 arranged sequentially. For example... Figures 1 to 2 As shown, the first port of the first three-way valve 11 is connected to the ambient space 51; the second port of the first three-way valve 11 is connected to the first port of the second three-way valve 12; the second port of the second three-way valve 12 is connected to the crew compartment 52; the first port of the third three-way valve 13 is also connected to the crew compartment 52; the second port of the third three-way valve 13 is connected to the first section of the second heat exchanger 32; and the third port of the third three-way valve 13 is connected to the second section of the second heat exchanger 32.

[0040] In addition, the main circuit also includes a second branch, which includes a first four-way valve 21, a fourth three-way valve 14, a second four-way valve 22, and a fifth three-way valve 15 arranged sequentially. For example... Figures 1 to 2 As shown, the first port of the first four-way valve 21 is connected to the first section of the first heat exchanger 31, the second port of the first four-way valve 21 is connected to the third port of the first three-way valve 11, the third port of the first four-way valve 21 is connected to the second section of the first heat exchanger 31, and the fourth port of the first four-way valve 21 is connected to the first port of the fourth three-way valve 14. Furthermore, the second port of the fourth three-way valve 14 is connected to the third port of the second three-way valve 12, and the third port of the fourth three-way valve 14 is connected to the fourth port of the second four-way valve 22.

[0041] Furthermore, the first port of the second four-way valve 22 is connected to the second section of the second heat exchanger 32, the second port of the second four-way valve 22 is connected to the first port of the fifth three-way valve 15, and the third port of the second four-way valve 22 is connected to the first section of the second heat exchanger 32; the second port of the fifth three-way valve 15 is connected to the first section of the first heat exchanger 31, and the third port of the fifth three-way valve 15 is connected to the second section of the first heat exchanger 31.

[0042] Furthermore, such as Figures 1 to 2As shown, the main circuit also includes a third branch, on which an expansion valve 16 is provided. The two ends of the expansion valve 16 are respectively connected to the second section of the first heat exchanger 31 and the first section of the second heat exchanger 32.

[0043] In this embodiment, the regenerative circuit includes a regenerator 41, a third four-way valve 23, and a compressor 42. For example... Figures 1 to 2 As shown, the first and second ports of the regenerator 41 are connected to the first section of the first heat exchanger 31 and the second section of the second heat exchanger 32, respectively; the third port of the regenerator 41 is connected to the fourth port of the third four-way valve 23; and the fourth port of the regenerator 41 is connected to the second port of the third four-way valve 23. The first port of the third four-way valve 23 is connected to the first port of the compressor 42, and the third port of the third four-way valve 23 is connected to the second port of the compressor 42.

[0044] It should be noted that, in this embodiment, as Figures 1 to 2 As shown, the first interface of each component is labeled a, the second interface is labeled b, the third interface is labeled c, and the fourth structure is labeled d. When the air conditioning circuit is configured as a refrigeration circuit, the first and second interfaces of each four-way valve are connected, and the third and fourth interfaces are connected; when the air conditioning circuit is configured as a heating circuit, the first and fourth interfaces of each four-way valve are connected, and the second and third interfaces are connected.

[0045] When this air conditioning system is configured as a summer cooling circuit, such as Figure 1 As shown, the first portion of the hot air in the external environment space 51 flows sequentially through the first port and second port of the first three-way valve 11 and the first port of the second three-way valve 12. The hot air in the passenger compartment 52 enters the second three-way valve 12 through the second port of the second three-way valve 12. After the two streams of hot air mix, they flow out through the third port of the second three-way valve 12 and enter the fourth three-way valve 14 through the second port of the fourth three-way valve 14. This mixed hot air is divided into two parts. The first part flows sequentially through the third port of the fourth three-way valve 14, the fourth port and the third port of the second four-way valve 22, and flows into the first section of the second heat exchanger 32. The second part flows sequentially through the first port of the fourth three-way valve 14, the fourth port and the third port of the first four-way valve 21, and flows into the second section of the first heat exchanger 31. In addition, the second part of the hot air in the external environment space 51 flows sequentially through the first port and third port of the first three-way valve 11, the second port and the first port of the first four-way valve 21, and flows into the first section of the first heat exchanger 31.

[0046] Further, the first stage and the second stage of the first heat exchanger 31 respectively output gases. The two gases respectively enter the fifth three-way valve 15 through the second interface and the first interface of the fifth three-way valve 15, and after merging, they sequentially flow through the first interface of the fifth three-way valve 15, the second interface and the first interface of the second four-way valve 22, so as to flow into the second stage of the second heat exchanger 32.

[0047] The liquid refrigerant flows into the second heat exchanger 32. The refrigerant exchanges heat with the mixed hot air of the passenger compartment 52 and the environmental space 51 in the first stage of the second heat exchanger 32, and then the refrigerant exchanges heat with the (mixed hot air after heat exchange by the first heat exchanger 31) in the second stage of the second heat exchanger 32. The two mixed hot airs are discharged into the passenger compartment 52 through the third three-way valve 13 after heat exchange in the second heat exchanger 32, so as to realize the refrigeration of the passenger compartment 52.

[0048] Furthermore, the refrigerant after heat exchange in the second heat exchanger 32 sequentially passes through the second interface, the fourth interface of the regenerator 41, the second interface and the first interface of the third four-way valve 23, and the first interface of the compressor 42, so as to flow into the compressor 42; after the refrigerant forms a high-temperature and high-pressure gas in the compressor 42, it sequentially flows through the second interface of the compressor 42, the third interface, the fourth interface of the third four-way valve 23, and the third interface of the regenerator 41, so as to flow into the regenerator 41 again and release heat, and then the gaseous refrigerant flows into the first heat exchanger 31 to release heat again. After secondary heat release, the refrigerant flows into the second heat exchanger 32 through the expansion valve 16, so as to realize the above refrigeration cycle.

[0049] In this embodiment, when the air-conditioning circuit forms the above refrigeration circuit, due to the phase change heat exchange between the first stage of the second heat exchanger 32 and the second stage of the first heat exchanger 31, these two stages are the main heat exchange stages and承担了大部分的换热量.如 Figure 3 所示,现有空调系统的工作过程为1-2-5-6,而本实施例中的空调回路的工作过程优化为1-2”-3-4;此外,在 Figure 4 中,过程线在横坐标中的投影长度代表制冷(热)量、吸(放)热量、功量,可以看出制冷量qc由q 1-2 增加为q 1-2” ,压缩机42做功w由w 2-5 减少至w 2”-3 ,制冷系数ε(ε=q c / w)增加,即本空调回路能够有效提升制冷性能,降低系统能耗。同时制冷剂压缩前的压强p2=p 2” ,压缩后的压强p3<p5,压缩比π(π=p h / p l It should be noted that there seems to be an error in the original text where "承担了大部分的换热量.如" is an incomplete or incorrect expression. I have translated it as accurately as possible based on the existing context.( ) Reduce; preferably, an impeller compressor can be used to increase the system flow rate and improve the refrigeration efficiency.

[0050] Similarly, when this air conditioning system is configured as a winter heating circuit, such as Figure 2 As shown, the first portion of the cold air in the external environment space 51 flows sequentially through the first port and second port of the first three-way valve 11 and the first port of the second three-way valve 12. The cold air in the passenger compartment 52 enters the second three-way valve 12 through the second port of the second three-way valve 12. After the two streams of cold air mix, they flow out through the third port of the second three-way valve 12 and enter the fourth three-way valve 14 through the second port of the fourth three-way valve 14. This mixed cold air is divided into two parts. The first part flows sequentially through the third port of the fourth three-way valve 14, the fourth port and the first port of the second four-way valve 22, and flows into the second section of the second heat exchanger 32. The second part flows sequentially through the first port of the fourth three-way valve 14, the fourth port and the first port of the first four-way valve 21, and flows into the first section of the first heat exchanger 31. In addition, the second part of the cold air in the external environment space 51 flows sequentially through the first port and third port of the first three-way valve 11, the second port and the third port of the first four-way valve 21, and flows into the second section of the first heat exchanger 31.

[0051] Furthermore, the first and second sections of the first heat exchanger 31 respectively output gas. The two gas streams enter the fifth three-way valve 15 through the second and first ports, respectively, merge, and then flow sequentially through the first port of the fifth three-way valve 15, the second port of the second four-way valve 22, and the third port before flowing into the first section of the second heat exchanger 32. The two streams of cold air flowing into the second heat exchanger 32 are transformed into hot air after heat exchange in the second heat exchanger 32, and are discharged into the crew compartment 52 through the third three-way valve 13 to achieve heating of the crew compartment 52.

[0052] Furthermore, the refrigerant flows into the first heat exchanger 31, where it exchanges heat with the cold air and then flows into the regenerator circuit. After passing through the compressor 42, the refrigerant is formed into a high-temperature, high-pressure gas, which then flows into the second heat exchanger 32 through the regenerator 41 again to exchange heat with the aforementioned mixed cold air. Finally, it flows into the first heat exchanger 31 through the expansion valve 16, thus realizing the above-mentioned cycle process.

[0053] In this embodiment, when the air conditioning circuit is formed as the above-mentioned heating circuit, such as Figure 3 As shown, the existing air conditioning system operates in a 1-2-5-6 manner, while the air conditioning circuit in this embodiment is optimized to operate in a 1-2-3-4 manner; furthermore, in Figure 4 From this, we can see that the heating capacity q H By q 5-6 Increase to q 4-3”, the work done by the compressor 42, w, changes from w 2-5 to w 2”-3 , and the heating coefficient ε (ε = q H / w) increases, indicating that this air-conditioning circuit can effectively improve the heating performance and reduce the system energy consumption. At the same time, the pressure p2 before refrigerant compression is p 2” , and the pressure p3 after compression is less than p5, and the compression ratio π (π = p h / p l ) decreases; preferably, an impeller compressor can be used to increase the system flow rate and improve the heating efficiency.

[0054] According to the air-conditioning circuit of the present invention as described above, a plurality of four-way valves are provided in the air-conditioning circuit. By changing the connection mode of the four-way valves, the air-conditioning circuit can be formed into a refrigeration circuit or a heating circuit to meet the needs of the occupant compartment 52 for summer cooling and winter heating; in addition, this air-conditioning circuit introduces a regenerative circuit and can utilize the circulating air in the occupant compartment 52, so that the power consumption of the compressor 42 can be reduced and the refrigeration or heating capacity can be increased, thereby effectively increasing the refrigeration coefficient under high-temperature conditions in summer and the heating coefficient under low-temperature conditions in winter, and further reducing the energy consumption of the air-conditioning circuit to improve the fuel economy of the whole vehicle.

[0055] According to a second aspect of the present invention, a vehicle is provided, wherein the vehicle is provided with the air-conditioning circuit as described above.

[0056] Finally, it should be noted that: the above-described embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, rather than limiting them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present application can still modify the technical solutions described in the foregoing embodiments, or can easily conceive of changes, or equivalently replace some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be the protection scope of the claims.

Claims

1. An air conditioning circuit in which refrigerant circulates, characterized in that, The air conditioning circuit includes a main circuit and a regenerative circuit connected to each other. The main circuit is equipped with a first heat exchanger and a second heat exchanger and is connected to the passenger compartment and the ambient space. By changing the connection mode of the four-way valve, the air conditioning circuit can be configured as a cooling circuit or a heating circuit. The main circuit includes a first branch, which includes a first three-way valve, a second three-way valve, and a third three-way valve arranged sequentially. The first port of the first three-way valve is connected to the ambient space. The second port of the first three-way valve is connected to the first port of the second three-way valve. The second port of the second three-way valve is connected to the crew compartment. The first port of the third three-way valve is also connected to the crew compartment. The second port of the third three-way valve is connected to the first section of the second heat exchanger, and the third port of the third three-way valve is connected to the second section of the second heat exchanger. The main circuit further includes a second branch, which includes a first four-way valve, a fourth three-way valve, a second four-way valve, and a fifth three-way valve arranged sequentially. The first port of the first four-way valve is connected to the first section of the first heat exchanger; the second port of the first four-way valve is connected to the third port of the first three-way valve; the third port of the first four-way valve is connected to the second section of the first heat exchanger; and the fourth port of the first four-way valve is connected to the first port of the fourth three-way valve. The second port of the fourth three-way valve is connected to the third port of the second three-way valve; and the third port of the fourth three-way valve is connected to the fourth port of the second four-way valve. The first port of the second four-way valve is connected to the second section of the second heat exchanger; the second port of the second four-way valve is connected to the first port of the fifth three-way valve; and the third port of the second four-way valve is connected to the first section of the second heat exchanger. The second port of the fifth three-way valve is connected to the first section of the first heat exchanger; and the third port of the fifth three-way valve is connected to the second section of the first heat exchanger. The regenerative circuit includes a regenerator, a third four-way valve, and a compressor; the first and second ports of the regenerator are respectively connected to the first section of the first heat exchanger and the second section of the second heat exchanger; the third port of the regenerator is connected to the fourth port of the third four-way valve; the fourth port of the regenerator is connected to the second port of the third four-way valve. The first port of the third four-way valve is connected to the first port of the compressor, and the third port of the third four-way valve is connected to the second port of the compressor.

2. The air conditioning circuit according to claim 1, characterized in that, When the air conditioning circuit is configured as a refrigeration circuit, the first heat exchanger is configured as a condenser and the second heat exchanger is configured as an evaporator; when the air conditioning circuit is configured as a heating circuit, the first heat exchanger is configured as an evaporator and the second heat exchanger is configured as a condenser.

3. The air conditioning circuit according to claim 2, characterized in that, Both the first heat exchanger and the second heat exchanger are configured as double-effect heat exchangers.

4. The air conditioning circuit according to claim 1, characterized in that, The main circuit also includes a third branch, on which an expansion valve is provided. The two ends of the expansion valve are respectively connected to the second section of the first heat exchanger and the first section of the second heat exchanger.

5. The air conditioning circuit according to claim 1, characterized in that, When the air conditioning circuit is configured as a refrigeration circuit, the first and second ports of each of the four-way valves are connected, and the third and fourth ports are connected; when the air conditioning circuit is configured as a heating circuit, the first and fourth ports of each of the four-way valves are connected, and the second and third ports are connected.

6. A car, characterized in that, The vehicle is equipped with an air conditioning circuit as described in any one of claims 1 to 5.

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