Dual-circulation system air conditioner

Abstract

The utility model provides a double-circulation-system air conditioner which is used for an electric automobile and comprises a shell, and a condensation electric control cavity, a press cavity and an evaporation cavity are formed in the shell. A first condenser, a first electric control box, a second condenser and a second electric control box are arranged in the condensation electric control cavity. A first compressor, a first four-way valve, a second compressor and a second four-way valve are arranged in the press cavity. An evaporator, a first expansion valve, a second expansion valve, a heat exchanger and a heat exchanger expansion valve are arranged in the evaporation cavity. The first compressor, the first four-way valve, the first condenser, the first expansion valve and the evaporator are connected to form a first circulating system; the second compressor, the second four-way valve, the second condenser, the second expansion valve and the evaporator are connected to form a second circulation system. A first channel of the heat exchanger is connected with any circulating system, and a second channel is used for communicating with a battery heat exchange module of the electric automobile. The double-circulation-system air conditioner is compact in overall structure, small in size and light in weight.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning equipment, and in particular to a dual-circulation system air conditioner. Background Art

[0002] Pure electric buses are often equipped with air conditioning systems to adjust the air in the vehicle, such as cooling, heating, and ventilating the air in the vehicle, thereby improving the riding comfort of passengers. At present, most of the air conditioners on existing electric vehicles use a single-system structure, and some use a dual-system structure.

[0003] In the process of implementing this application, the inventors found that there are at least the following problems in the prior art: the existing air-conditioning system has a complex structure and the overall layout structure of each component is poor, resulting in a large overall weight and volume of the system. Summary of the invention

[0004] Based on this, the present application provides a dual-circulation system air conditioner to improve the problem of large volume and weight caused by poor overall layout structure of the air conditioning system in the prior art.

[0005] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] On the one hand, an embodiment of the present application provides a dual-circulation system air conditioner for an electric vehicle, comprising a housing, wherein a condensing electric control chamber, a compressor chamber, and an evaporation chamber are arranged in sequence along the length direction of the housing;

[0007] The condensing electric control chamber is equipped with a first condenser, a first electric control box, a second condenser and a second electric control box;

[0008] The compressor chamber is provided with a first compressor, a first four-way valve, a second compressor and a second four-way valve;

[0009] The evaporation chamber is equipped with an evaporator, a first expansion valve, a second expansion valve, a heat exchanger and a heat exchanger expansion valve;

[0010] The first compressor, the first four-way valve, the first condenser, the first expansion valve and the evaporator are connected to form a first circulation system; the second compressor, the second four-way valve, the second condenser, the second expansion valve and the evaporator are connected to form a second circulation system;

[0011] The heat exchanger comprises a first channel and a second channel for heat exchange, the first channel is connected in series with the heat exchanger expansion valve and then connected to the first circulation system or the second circulation system, and the second channel is used to communicate with the battery heat exchange module of the electric vehicle;

[0012] The first electric control box is used to control the first circulation system, and the second electric control box is used to control the second circulation system.

[0013] In one embodiment, the first condenser and the second condenser are respectively arranged close to the width direction of the shell, the first condenser is arranged close to the first side of the shell in the width direction, and the second condenser is arranged close to the second side of the shell in the width direction; the first electrical control box and the second electrical control box are arranged side by side along the length direction of the shell in the condensation electrical control cavity between the first condenser and the second condenser.

[0014] In one embodiment, a first condensation fan and a second condensation fan are further provided in the condensation electric control chamber. The first condensation fan is stacked on the first condenser to adjust the air circulation speed around the first condenser; the second condensation fan is stacked on the second condenser to adjust the air circulation speed around the second condenser.

[0015] In one embodiment, the first circulation system is also connected in series with a first drying bottle and a first gas-liquid separator, and the second circulation system is also connected in series with a second drying bottle and a second gas-liquid separator; the first drying bottle, the first gas-liquid separator, the second drying bottle and the second gas-liquid separator are all arranged in the press chamber.

[0016] In one of the embodiments, an air purifier and a fresh air valve are further provided in the evaporation chamber. The fresh air valve is arranged close to the return air outlet of the dual circulation system air conditioner to provide fresh air volume to the dual circulation system air conditioner.

[0017] In one of the embodiments, an evaporation fan is further provided in the evaporation chamber, and the evaporation fan is used to adjust the air circulation speed around the evaporator. The evaporation fan is arranged close to the air outlet of the dual circulation system air conditioner.

[0018] In one of the embodiments, a heater is further provided in the evaporation chamber, and the heater is arranged close to the evaporation fan.

[0019] In one of the embodiments, the dual-circulation system air conditioner further includes a first vibration reduction structure and a second vibration reduction structure, wherein the first vibration reduction structure is connected to the first compressor, and the second vibration reduction structure is connected to the second compressor.

[0020] In one embodiment, the number of the first condensing fan, the second condensing fan and the evaporating fan are all multiple.

[0021] In one of the embodiments, the evaporation fan is spaced apart from the bottom plate of the evaporation chamber to reduce the existence of dead corners for gas circulation.

[0022] The present application has at least the following beneficial effects: The embodiment of the present application provides a dual-circulation system air conditioner, which is an overall three-stage design, including a condensing electric control chamber, a compressor chamber and an evaporation chamber. The three-stage design allows the components to be arranged in a classified manner, and the layout structure is reasonable, which can effectively reduce the overall volume and weight of the air-conditioning system. The dual-circulation system air conditioner of the embodiment of the present application includes two circulation systems, a first circulation system and a second circulation system, and the two circulation systems can operate relatively independently, which effectively improves the cooling capacity of the air-conditioning system. At the same time, the operating mode of the system can be selected according to actual needs. For example, when the cooling capacity demand is large, the two circulation systems can be selected to operate simultaneously. When the cooling capacity demand is small, one of the circulation systems can be operated separately, so that the air-conditioning system can achieve the purpose of energy saving and stable temperature control. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the dual-circulation system air conditioner according to an embodiment of the present application.

[0024] Figure 2 for Figure 1 Schematic diagram of the main structure of a dual-circulation system air conditioner.

[0025] Figure 3 This is a schematic diagram of the structure of the compressor chamber of the dual-circulation system air conditioner according to an embodiment of the present application.

[0026] Figure 4 It is a schematic structural diagram of a side view (viewed from the side close to the press chamber to the side away from the press chamber) of the evaporation chamber of an embodiment of the present application.

[0027] The meanings of the symbols in the accompanying drawings are as follows:

[0028] 100, housing; 101, condensation electric control chamber; 102, compressor chamber; 103, evaporation chamber; 104, first transverse partition; 105, second transverse partition; 106, first side; 107, second side;

[0029] 10. First circulation system; 11. First condenser; 12. First electric control box; 13. First condensing fan; 14. First compressor; 15. First four-way valve; 16. First drying bottle; 17. First gas-liquid separator; 18. First expansion valve;

[0030] 20. Second circulation system; 21. Second condenser; 22. Second electric control box; 23. Second condensing fan; 24. Second compressor; 25. Second four-way valve; 26. Second drying bottle; 27. Second gas-liquid separator; 28. Second expansion valve;

[0031] 31. Evaporator; 310. Heat exchange component; 32. Evaporating fan; 33. Heat exchanger; 330. Inlet and outlet water pipes; 34. Heat exchanger expansion valve; 35. Air purifier; 36. Fresh air valve; 37. Heater. DETAILED DESCRIPTION

[0032] The technical solution of the present application is further elaborated in detail below in conjunction with the accompanying drawings and specific embodiments of the specification.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit the implementation of this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] The dual-circulation system air conditioner of the embodiment of the present application is used in electric vehicles, such as pure electric buses, which rely on batteries as the power source of the vehicle, and the batteries generate heat during operation. The dual-circulation system air conditioner of the present application can control the temperature of the battery while controlling the temperature inside the electric vehicle, thereby ensuring the safe and efficient operation of the battery.

[0037] See also Figure 1The dual-circulation system air conditioner of the embodiment of the present application includes a shell 100, and the shell 100 is sequentially arranged with a condensing electric control chamber 101, a compressor chamber 102, and an evaporation chamber 103 along the length direction. Specifically, in this embodiment, the shell 100 is provided with a first transverse partition 104 and a second transverse partition 105 in parallel along the width direction, and the shell 100 is divided into three chambers along the length direction, which are the condensing electric control chamber 101, the compressor chamber 102, and the evaporation chamber 103, respectively, and the compressor chamber 102 is located between two transverse partitions (the first transverse partition 104 and the second transverse partition 105).

[0038] like Figure 2 As shown, the condensing electric control chamber 101 is provided with a first condenser 11 , a first electric control box 12 , a second condenser 21 and a second electric control box 22 .

[0039] Specifically, in this embodiment, the first condenser 11 and the second condenser 21 are respectively arranged close to the width direction of the shell 100, the first condenser 11 is arranged close to the first side 106 of the width direction of the shell 100, and the second condenser 21 is arranged close to the second side 107 of the width direction of the shell 100. The first electric control box 12 and the second electric control box 22 are arranged side by side in the condensation electric control chamber 101 between the first condenser 11 and the second condenser 21 along the length direction of the shell 100. For example, the first electric control box 12 is arranged on the left (in the direction shown in the figure), and the second electric control box 22 is arranged on the right. Of course, the positions of the first electric control box 12 and the second electric control box 22 can also be swapped, and there is no specific requirement. The first condenser 11 and the second condenser 21 are respectively arranged close to the width direction of the shell 100, that is, the two condensers (the first condenser 11 and the second condenser 21) are arranged close to the outside of the shell 100, which can facilitate the heat dissipation of the condenser.

[0040] The condensation electric control chamber 101 is also provided with a first condensation fan 13 and a second condensation fan 23. The first condensation fan 13 is stacked on the first condenser 11 to adjust the air circulation speed around the first condenser 11; the second condensation fan 23 is stacked on the second condenser 21 to adjust the air circulation speed around the second condenser 21. In this embodiment, the number of the first condensation fan 13 and the second condensation fan 23 is multiple, for example, 4 first condensation fans 13 and 4 second condensation fans 23 can be set. The 4 first condensation fans 13 are arranged in sequence directly above the first condenser 11 along the length direction of the shell 100, and the 4 second condensation fans 23 are arranged in sequence directly above the second condenser 21 along the length direction of the shell 100. In this embodiment, the design margin of the heat exchange area of ​​the condenser is increased, and multiple condensation fans are used to increase the condensation air volume.

[0041] The first electric control box 12 and the second electric control box 22 are installed in the condensing electric control chamber 101, so that the overall structure of the components can be more compact, and the components in the condensing electric control chamber 101 are symmetrically distributed and reasonably arranged. The two electric control boxes (the first electric control box 12 and the second electric control box 22) are respectively provided with heat dissipation fans, which can dissipate heat for the electric control boxes. At the same time, the electric control boxes can also use the condensing fans to dissipate heat, thereby enhancing the heat dissipation effect of the electrical components in the electric control boxes and ensuring that the air conditioning system can be used normally in high temperature and harsh environments.

[0042] like Figure 2 and Figure 3 As shown, the compressor chamber 102 is provided with a first compressor 14 , a first four-way valve 15 , a second compressor 24 and a second four-way valve 25 .

[0043] Specifically, in this embodiment, the compressor chamber 102 is further provided with a first drying bottle 16, a first gas-liquid separator 17, a second drying bottle 26 and a second gas-liquid separator 27. The gas-liquid separator is mainly used to store part of the refrigerant in the system to prevent compressor liquid shock and excessive refrigerant from diluting the compressor oil. The drying bottle is used to absorb moisture in the pipeline with the desiccant in the bottle.

[0044] In order to meet the use requirements in high temperature environment areas, compressors and electronic control components with large cooling capacity and high temperature resistance can be selected.

[0045] In order to make the structure compact and easy to install, the first compressor 14, the first four-way valve 15, the first drying bottle 16 and the first gas-liquid separator 17 can be arranged close to the first side 106 in the width direction of the shell 100, and the second compressor 24, the second four-way valve 25, the second drying bottle 26 and the second gas-liquid separator 27 can be arranged close to the second side 107 in the width direction of the shell 100.

[0046] like Figure 2 As shown, the evaporator chamber 103 is provided with an evaporator 31 , a first expansion valve 18 , a second expansion valve 28 , a heat exchanger 33 and a heat exchanger expansion valve 34 .

[0047] The first compressor 14, the first four-way valve 15, the first condenser 11, the first expansion valve 18 and the evaporator 31 are connected to form a first circulation system 10. Specifically, the first four-way valve 15 includes a first interface, a second interface, a third interface and a fourth interface. The first interface is connected to the outlet (exhaust port) of the first compressor 14, the second interface is connected to the inlet (intake port) of the first compressor 14, one port of the first condenser 11 is connected to the third interface, another port is connected to an interface of the first expansion valve 18, one port of the evaporator 31 is connected to the fourth interface, and another port is connected to the first expansion valve 1 8; when the first circulation system 10 is used for refrigeration, the first interface and the third interface can be connected, and the second interface and the fourth interface can be connected by adjusting the first four-way valve 15; when the first circulation system 10 is used for heating, the first interface and the fourth interface can be connected, and the second interface and the third interface can be connected by adjusting the first four-way valve 15; the second compressor 24, the second four-way valve 25, the second condenser 21, the second expansion valve 28 and the evaporator 31 are connected to form the second circulation system 20, and the connection mode and working adjustment mode of the second circulation system 20 are the same as those of the first circulation system 10, which will not be repeated here. The components of the first circulation system 10 are connected together by copper pipe welding, and the connection mode of the second circulation system 20 is the same as that of the first circulation system 10. The first circulation system 10 is also connected in series with the first drying bottle 16 and the first gas-liquid separator 17, and the second circulation system 20 is also connected in series with the second drying bottle 26 and the second gas-liquid separator 27. The setting of the drying bottle and the gas-liquid separator can refer to the existing air conditioning technology, which will not be repeated here.

[0048] The heat exchanger 33 of this embodiment is a plate heat exchanger 33, including a first channel (not shown) and a second channel (not shown) for heat exchange. The first channel is connected in series with the heat exchanger expansion valve 34 and connected to the first circulation system 10 or the second circulation system 20. The second channel is used to communicate with the battery heat exchange module of the electric vehicle through the inlet and outlet water pipes 330, so as to dissipate heat for the battery of the electric vehicle, so that the dual circulation system air conditioner can achieve diversified functions. The first channel is connected to the outlet of the heat exchanger expansion valve 34, and the outlet of the first channel is connected to the outlet end of the evaporator 31. The inlet of the heat exchanger expansion valve 34 is connected to the inlet end of the first expansion valve 18 or the inlet end of the second expansion valve 28. That is, after the first channel of the heat exchanger 33 is connected in series with the heat exchanger expansion valve 34, it is connected to the outlet end of the evaporator 31 and the inlet end of any expansion valve (the first expansion valve 18 or the second expansion valve 28).

[0049] The first electric control box 12 is used to control the first circulation system 10, and the second electric control box 22 is used to control the second circulation system 20. The first electric control box 12 and the second electric control box 22 may be provided with electric control devices for controlling the two circulation systems (the first circulation system 10 and the second circulation system 20).

[0050] In the evaporation chamber 103 of the present embodiment, an evaporation fan 32 is also provided. The evaporation fan 32 is divided into two groups. Each group of evaporation fans 32 is respectively provided on both sides of the evaporation chamber 103 close to the width direction of the shell 100, and extends along the length direction of the shell 100. The evaporation fan 32 is provided close to the air outlet of the dual circulation system air conditioner for easy air outlet. The evaporator 31 of the first circulation system 10 and the second circulation system 20 is an integrated design. The flow paths of the two circulation systems are respectively staggered and evenly distributed together, and each forms an independent circulation system. Each group of evaporation fans 32 includes a plurality of fans arranged in parallel, which increases the evaporation air volume. Each group of evaporation fans 32 can extend from one end of the evaporation chamber 103 to the other end along the length direction of the shell 100. In this embodiment, the design margin of the heat exchange area of ​​the evaporator 31 is increased, thereby improving the cooling capacity of the air-conditioning system. The evaporator 31 includes two groups of heat exchange components 310 connected in series, each group of heat exchange components 310 is respectively arranged close to a corresponding group of evaporation fans 32, and the two groups of heat exchange components 310 are respectively inclined relative to the bottom plate of the shell 100 of the evaporation chamber 103 to increase the heat exchange area of ​​the heat exchange components 310.

[0051] An air purifier 35 and a fresh air valve 36 are also provided in the evaporation chamber 103. The fresh air valve 36 is arranged near the return air outlet of the dual-circulation system air conditioner to provide fresh air volume to the dual-circulation system air conditioner. The air purifier 35 is designed in the evaporation chamber 103 to achieve the diversification of the functions of the air conditioning system while making the overall structure compact. The fresh air valve 36 is arranged near the return air outlet of the air system to facilitate air intake. At the same time, the first expansion valve 18, the second expansion valve 28, the heat exchanger expansion valve 34, the air purifier 35 and the junction box (not shown) are distributed and arranged near the return air outlet, which is beneficial to the heat dissipation of each component and makes the overall structure more compact.

[0052] In order to further enhance the functionality of the dual-circulation system air conditioner, a heater 37 may be provided in the evaporation chamber 103, for example, a PTC heater 37 (composed of a PTC ceramic heating element and an aluminum tube. This type of PTC heater 37 has the advantages of low thermal resistance and high heat exchange efficiency, and is an automatic constant temperature and power-saving electric heater 37). Two groups of heaters 37 may also be provided, and each group of heaters 37 is respectively provided between a group of heat exchange components 310 and a corresponding group of evaporation fans 32, that is, the first side 106 of the evaporation chamber 103 close to the width direction of the shell 100 is provided with an evaporation fan 32, a heater 37 and a heat exchange component 310 from the outside to the inside, and the second side 107 of the evaporation chamber 103 close to the transition direction of the shell 100 is also provided with an evaporation fan 32, a heater 37 and a heat exchange component 310 from the outside to the inside, and the evaporation chamber 103 adopts a symmetrical structural layout as a whole. The heater 37 is arranged between the evaporator fan 32 and the heat exchange assembly 310 so that the air passing through the heat exchange assembly 310 can be discharged from the evaporator fan 32 through the heater 37, thereby making the temperature adjustment more accurate. When installing the evaporator fan 32, it can be elevated, that is, a certain gap is left between the bottom of the evaporator fan 32 and the bottom plate of the evaporation chamber 103 to reduce the dead angle of gas circulation. The specific elevation space can be determined according to actual conditions. The air purifier 35 is arranged between the two groups of heat exchange assemblies 310, located in the middle of the evaporation chamber 103, the heat exchanger 33 and the three expansion valves (the first expansion valve 18, the second expansion valve 28 and the heat exchanger expansion valve 34) are respectively arranged on the side of the air purifier 35 close to the compressor chamber 102, and the fresh air valve 36 is arranged near the end of the shell 100 in the length direction, and is also located between the two groups of heat exchange assemblies 310.

[0053] In order to reduce the noise of the dual-circulation system air conditioner, a first vibration reduction structure (not shown) and a second vibration reduction structure (not shown) can also be provided. The first vibration reduction structure is connected to the first compressor 14 to reduce the vibration noise of the first compressor 14; the second vibration reduction structure is connected to the second compressor 24 to reduce the vibration noise of the second compressor 24. Furthermore, a secondary vibration reduction and vibration isolation technology can be used to improve the vibration reduction effect and reduce the noise of the unit. The first vibration reduction structure and the second vibration reduction structure can respectively include a base plate, a primary vibration damper, a secondary press tray and a secondary vibration damper. The primary vibration damper is respectively connected to the compressor (the first compressor 14 or the second compressor 24) and the secondary press tray, and the secondary vibration damper is respectively connected to the tray and the base plate, and the side surface of the base plate away from the compressor is used to connect to the body of the electric vehicle. It can be understood that the base plate here can be a part of the housing 100.

[0054] The dual-circulation system air conditioner of this embodiment includes two circulation systems, which can perform cooling and heating independently. Different temperature control modes can be selected according to the needs of the electric vehicle, which can not only meet the temperature control requirements of the electric vehicle, but also help save energy. For example, according to the ambient temperature conditions, it is possible to choose to open one of the circulation systems alone or both circulation systems at the same time for cooling or heating. In the heating mode, it is also possible to choose whether to use a heater for auxiliary heating.

[0055] The dual-circulation system air conditioner of this embodiment has two sets of circulation systems with reasonable structural layout and basically symmetrical design. All components of the first circulation system are arranged close to the first side of the shell width direction, and all components of the second circulation system are arranged close to the second side of the shell width direction. The two circulation systems share one evaporator, making the structure more compact and meeting the demand for large cooling capacity. The evaporator includes two sets of heat exchange components, which are designed in an integrated manner in a right figure eight shape. The flow paths of the two circulation systems are staggered and evenly distributed together (such as Figure 4 As shown), and each independently forms a circulation system. The two circulation systems are designed with two liquid separation heads, which are respectively fixed on the connecting plate in the middle of the evaporator and can be placed horizontally or vertically, so that the refrigerant of the two circulation systems can be separated more evenly. In this embodiment, the evaporation fans on both sides are elevated and installed, which reduces the evaporation dead angle, makes the evaporator evaporate better, and thus makes the cooling effect of the air conditioner better.

[0056] The dual-circulation system air conditioner of the embodiment of the present application adopts a three-stage structural design with a compact and reasonable layout. Its shell adopts an aluminum frame and hot-dip galvanized plate, and is combined by bolt connection, which is convenient for heat dissipation of the unit and reduces the overall weight of the unit.

[0057] The dual-circulation system air conditioner of the embodiment of the present application adopts a large-capacity, high-temperature-resistant compressor and electronic control components, and increases the cooling capacity of the evaporator and condenser. It adopts multiple fans (multiple evaporating fans, multiple condensing fans) to dissipate heat, and the electronic control box can further enhance the heat dissipation function through the condensing fan, so that the overall high-temperature resistance and heat dissipation performance of the air-conditioning system are stronger, and the normal use of the air-conditioning system in a high-temperature environment can be ensured.

[0058] The dual-circulation system air conditioner of the embodiment of the present application adopts a two-level vibration reduction and isolation technology for the compressor base, which effectively reduces the noise of the unit.

[0059] The dual-circulation system air conditioner of the embodiment of the present application, one of the circulation systems (can be any circulation system) integrates a plate heat exchanger, which is placed at the return air outlet in the middle of the evaporator. Its working principle is to divide a part of the refrigerant from one of the circulation systems, throttle and reduce the pressure through the heat exchanger expansion valve, and the refrigerant evaporates and absorbs heat in the plate heat exchanger, absorbs heat from the water side (the coolant on the electric vehicle battery side), performs heat exchange, and then returns to the circulation system and circulates continuously to achieve the purpose of dissipating heat to the battery pack of the electric vehicle.

[0060] The dual-circulation system air conditioner of the embodiment of the present application has an air purifier installed near the return air outlet in the evaporation chamber. By utilizing the function of the evaporation fan, the air in the car can continuously pass through the air purifier and circulate back and forth, which can effectively disinfect, efficiently purify, decompose odors, and remove formaldehyde for a long time, thereby achieving the purpose of purifying the air in the car.

[0061] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0062] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A dual-circulation system air conditioner for electric vehicles, It is characterized in that It comprises a shell, in which a condensation electric control chamber, a compressor chamber and an evaporation chamber are arranged in sequence along the length direction of the shell; The condensing electric control chamber is equipped with a first condenser, a first electric control box, a second condenser and a second electric control box; The compressor chamber is provided with a first compressor, a first four-way valve, a second compressor and a second four-way valve; The evaporation chamber is equipped with an evaporator, a first expansion valve, a second expansion valve, a heat exchanger and a heat exchanger expansion valve; The first compressor, the first four-way valve, the first condenser, the first expansion valve and the evaporator are connected to form a first circulation system; the second compressor, the second four-way valve, the second condenser, the second expansion valve and the evaporator are connected to form a second circulation system; The heat exchanger comprises a first channel and a second channel for heat exchange, the first channel is connected in series with the heat exchanger expansion valve and then connected to the first circulation system or the second circulation system, and the second channel is used to communicate with the battery heat exchange module of the electric vehicle; The first electric control box is used to control the first circulation system, and the second electric control box is used to control the second circulation system.

2. The dual-circulation system air conditioner according to claim 1, It is characterized in that The first condenser and the second condenser are respectively arranged close to the width direction of the shell, the first condenser is arranged close to the first side of the shell in the width direction, and the second condenser is arranged close to the second side of the shell in the width direction; the first electric control box and the second electric control box are arranged side by side along the length direction of the shell in the condensation electric control cavity between the first condenser and the second condenser.

3. The dual-circulation system air conditioner according to claim 2, It is characterized in that A first condensation fan and a second condensation fan are also provided in the condensation electric control chamber. The first condensation fan is stacked on the first condenser to adjust the air circulation speed around the first condenser; the second condensation fan is stacked on the second condenser to adjust the air circulation speed around the second condenser.

4. The dual-circulation system air conditioner according to claim 1, It is characterized in that The first circulation system is also connected in series with a first drying bottle and a first gas-liquid separator, and the second circulation system is also connected in series with a second drying bottle and a second gas-liquid separator; the first drying bottle, the first gas-liquid separator, the second drying bottle and the second gas-liquid separator are all arranged in the press chamber.

5. The dual-circulation system air conditioner according to claim 1, It is characterized in that An air purifier and a fresh air valve are also provided in the evaporation chamber. The fresh air valve is arranged close to the return air outlet of the dual circulation system air conditioner and is used to provide fresh air volume to the dual circulation system air conditioner.

6. The dual-circulation system air conditioner according to claim 3, It is characterized in that An evaporation fan is also provided in the evaporation chamber, and the evaporation fan is used to adjust the air circulation speed around the evaporator. The evaporation fan is arranged close to the air outlet of the dual-circulation system air conditioner.

7. The dual-circulation system air conditioner according to claim 6, It is characterized in that A heater is also provided in the evaporation chamber, and the heater is arranged close to the evaporation fan.

8. The dual-circulation system air conditioner according to claim 1, It is characterized in that The invention also includes a first vibration-damping structure and a second vibration-damping structure, wherein the first vibration-damping structure is connected to the first compressor, and the second vibration-damping structure is connected to the second compressor.

9. The dual-circulation system air conditioner according to claim 6, It is characterized in that The first condensing fan, the second condensing fan and the evaporating fan are all multiple in number.

10. The dual-circulation system air conditioner according to claim 6, It is characterized in that The evaporation fan is spaced apart from the bottom plate of the evaporation chamber to reduce the existence of dead corners for gas circulation.

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