Air conditioner refrigerator system and vehicle

Abstract

The utility model relates to an air conditioner refrigerator system and a vehicle, the air conditioner refrigerator system comprises a refrigerant loop, the refrigerant loop comprises a refrigerator refrigerant branch and an air conditioner refrigerant branch, the refrigerator refrigerant branch comprises a main flow section, a throttling branch section and a pressurizing branch section, and the throttling branch section and the pressurizing branch section are arranged in parallel and both communicate with the main flow section; the main flow section is provided with a refrigerator heat exchanger, the pressurization branch section is provided with an auxiliary compressor, and the throttling branch section is provided with an auxiliary throttling device. In a refrigeration mode, the supercharging branch section is conducted, and a refrigerant flowing out of the refrigerator heat exchanger is compressed by the auxiliary compressor and then enters the main compressor; when in a heating mode, the throttling branch section is conducted, a refrigerant flowing out of the main compressor is throttled and depressurized by the auxiliary throttling device and then enters the refrigerator heat exchanger, and compared with related technologies, mutual interference of an air conditioner and a refrigerator is avoided by introducing the supercharging branch section and the auxiliary compressor and introducing the throttling branch section and the auxiliary throttling device, and the refrigeration effect is good; the refrigerator can be safely heated and unfrozen, and the reliability, stability and safety of the system are improved.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration, and particularly to an air conditioner - refrigerator system and a vehicle. Background Art

[0002] With the development of the economic society, people's requirements for living standards are getting higher and higher. Air conditioners and refrigerators have become two essential household appliances in people's daily lives. Since the working principles of the main engines adopted by air conditioners and refrigerators are roughly the same and their structures are similar, they have many commonalities. It is possible to integrate air conditioners and refrigerators into an air conditioner - refrigerator integrated machine that shares a set of refrigeration / heating main engine system through optimized design, thereby saving space and cost.

[0003] One type of solution is to have an outdoor external unit. A compressor and a condenser are arranged in the external unit. The external unit is connected to an air conditioner indoor unit and a refrigerator respectively through two parallel heat exchange pipes and supplies refrigerant to the air conditioner indoor unit and the refrigerator. Since the refrigeration temperature of the refrigerator is lower than that of the air conditioner, the outlet pressure of the refrigerator is lower. However, in this type of solution, the air conditioner evaporator and the refrigerator outlet are interconnected and affect each other, and the pressure will tend to be the same, the superheat zones of both expand, affecting the refrigeration effect, the compressor pressure ratio is high, the reliability and stability are low, and the refrigerator can usually only refrigerate but not heat. Another type of solution has a similar structure. The main difference is that the high - temperature and high - pressure gas discharged from the compressor can directly enter the refrigerator and the air conditioner indoor unit respectively for heating, so that the refrigerator has a heating and thawing function. However, the temperature of the refrigerant discharged from the compressor is too high, which is likely to cause scalding of the refrigerator. Utility Model Content

[0004] The embodiments of the present application provide an air conditioner - refrigerator system and a vehicle, which solve the technical problems in the related art that the refrigerator and the air conditioner interfere with each other, the refrigeration effect is poor, the reliability and stability of the system are low, the functions of the refrigerator are limited, and there are potential safety hazards.

[0005] To achieve the above object, according to the first aspect of the present application, an air conditioner - refrigerator system for a vehicle is provided. The air conditioner - refrigerator system includes a refrigerant circuit, and the refrigerant circuit includes:

[0006] A refrigerant main line, on which a main compressor is provided;

[0007] A refrigerator refrigerant branch, which is communicated with the refrigerant main line; the refrigerator refrigerant branch includes a main flow section, a throttling branch section and a boosting branch section. The throttling branch section and the boosting branch section are arranged in parallel and are both communicated with the main flow section; wherein, a refrigerator heat exchanger is provided in the main flow section, an auxiliary compressor is provided in the boosting branch section, and an auxiliary throttling device is provided in the throttling branch section;

[0008] An air conditioner refrigerant branch, which is arranged in parallel with the refrigerator refrigerant branch and is communicated with the refrigerant main line;

[0009] When the air-conditioning refrigerator system is in the refrigeration mode, the boosting branch section is conducted, so that the refrigerant flowing out of the refrigerator heat exchanger is compressed by the auxiliary compressor and then enters the main compressor;

[0010] When the air-conditioning refrigerator system is in the heating mode, the throttling branch section is conducted, so that the refrigerant flowing out of the main compressor is throttled and depressurized by the auxiliary throttling device and then enters the refrigerator heat exchanger.

[0011] Optionally, an automatic valve is provided in the throttling branch section. The automatic valve is a pre-pressurized one-way valve, and the pre-tightening force of the automatic valve is greater than the pressure difference between the input end and the output end of the auxiliary compressor during its operation;

[0012] When the air-conditioning refrigerator system is in the refrigeration mode, the automatic valve is closed to enable the auxiliary compressor to compress the refrigerant flowing out of the refrigerator heat exchanger;

[0013] When the air-conditioning refrigerator system is in the heating mode, the automatic valve is conducted to enable the auxiliary throttling device to throttle and depressurize the refrigerant flowing out of the main compressor.

[0014] Optionally, a first heat exchanger and a second heat exchanger are further provided in the refrigerant dry path;

[0015] The air-conditioning refrigerant branch includes an air-conditioning refrigeration branch and an air-conditioning heating branch. The air-conditioning refrigeration branch is provided with an air-conditioning evaporator, and the air-conditioning heating branch is provided with an air-conditioning condenser;

[0016] Wherein, when the air-conditioning refrigerator system is in the refrigeration mode, the refrigerant flows from the main compressor through the first heat exchanger to the air-conditioning evaporator. When the air-conditioning refrigerator system is in the heating mode, the refrigerant flows from the main compressor through the air-conditioning condenser to the second heat exchanger.

[0017] Optionally, the air-conditioning refrigerator system is provided with a first one-way valve and a second one-way valve;

[0018] The refrigerator refrigerant branch is connected to the second heat exchanger through the first one-way valve, so that when the air-conditioning refrigerator system is in the heating mode, the refrigerant flows from the refrigerator refrigerant branch through the first one-way valve to the second heat exchanger;

[0019] The refrigerator refrigerant branch is also connected to the first heat exchanger through the second one-way valve, so that when the air-conditioning refrigerator system is in the refrigeration mode, the refrigerant flows from the first heat exchanger through the second one-way valve to the refrigerator refrigerant branch.

[0020] Optionally, the air-conditioning refrigerator system is provided with a first solenoid valve and a second solenoid valve;

[0021] The first solenoid valve is connected between the main compressor and the first heat exchanger, such that when the air-conditioning refrigerator system is in the refrigeration mode, the refrigerant flows from the main compressor through the first solenoid valve to the first heat exchanger;

[0022] The second solenoid valve is connected between the main compressor and the second heat exchanger, such that when the air-conditioning refrigerator system is in the heat exchange mode, the refrigerant flows from the second heat exchanger through the second solenoid valve to the main compressor.

[0023] Optionally, the air-conditioning refrigerator system is provided with a third check valve;

[0024] The first heat exchanger is connected to the refrigerator refrigerant branch and / or the air-conditioning refrigeration branch through the third check valve, such that when the air-conditioning refrigerator system is in the refrigeration mode, the refrigerant flows from the first heat exchanger through the third check valve to the refrigerator refrigerant branch and / or the air-conditioning refrigeration branch.

[0025] Optionally, a refrigerator throttling device is further provided on the main flow section. When the air-conditioning refrigerator system is in the refrigeration mode, the refrigerator throttling device throttles and reduces the pressure of the refrigerant flowing out of the first heat exchanger. When the air-conditioning refrigerator system is in the heating mode, the refrigerator throttling device throttles and reduces the pressure of the refrigerant flowing out of the refrigerator heat exchanger;

[0026] A first air-conditioning throttling device is further provided on the air-conditioning heating branch. When the air-conditioning refrigerator system is in the heating mode, the first air-conditioning throttling device throttles and reduces the pressure of the refrigerant flowing out of the air-conditioning condenser;

[0027] A second air-conditioning throttling device is further provided on the air-conditioning refrigeration branch. When the air-conditioning refrigerator system is in the refrigeration mode, the second air-conditioning throttling device throttles and reduces the pressure of the refrigerant flowing out of the first heat exchanger.

[0028] Optionally, the air-conditioning refrigerator system is provided with a third solenoid valve and a fourth solenoid valve;

[0029] The refrigerator refrigerant branch is connected to the outlet end of the main compressor through the third solenoid valve. When the air-conditioning refrigerator system is in the heating mode, the refrigerant flows from the main compressor through the third solenoid valve to the refrigerator refrigerant branch;

[0030] The refrigerator refrigerant branch is further connected to the inlet end of the main compressor through the fourth solenoid valve, such that when the air-conditioning refrigerator system is in the refrigeration mode, the refrigerant flows from the refrigerator refrigerant branch through the fourth solenoid valve to the main compressor.

[0031] Optionally, a liquid storage device is further provided in the refrigerant main line, and the first heat exchanger is located between the outlet end of the main compressor and the liquid storage device; and / or,

[0032] A gas-liquid separation device is further provided in the refrigerant main line, and the gas-liquid separation device is located between the second heat exchanger and the inlet end of the main compressor.

[0033] According to a second aspect of the present application, a vehicle is provided, including the air-conditioning and refrigerator system as described above.

[0034] In the air-conditioning and refrigerator system according to the embodiments of the present application, by introducing a pressurizing branch section and an auxiliary compressor, as well as a throttling branch section and an auxiliary throttling device, in the refrigeration mode, the pressurizing branch section is turned on, and the auxiliary compressor compresses the low-temperature and low-pressure refrigerant flowing out of the refrigerator heat exchanger to increase its pressure and make it match the pressure of the refrigerant flowing out of the air-conditioning evaporator. The refrigerator heat exchanger and the air-conditioning evaporator do not affect each other, the heat transfer is sufficient, the refrigeration effect is good, and at the same time, the compression ratio of the main compressor is prevented from being too high, increasing the reliability and stability of the main compressor; in the heating mode, the throttling branch section is turned on, and the auxiliary throttling device throttles and reduces the pressure of the high-temperature and high-pressure refrigerant flowing out of the main compressor, so that it can release heat at a lower temperature when entering the refrigerator heat exchanger, which is used for the heating and thawing function of the refrigerator, and at the same time, the risk of scalding caused by too high refrigerant temperature is avoided. Compared with the related art, the mutual interference between the air conditioner and the refrigerator is avoided, the refrigeration effect is good, the refrigerator can be safely heated and thawed, and the reliability, stability and safety of the system are improved.

[0035] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. Description of the Drawings

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0037] In order to more fully understand the present application and its beneficial effects, the following description will be made in conjunction with the drawings, where the same reference numerals represent the same parts in the following description.

[0038] Figure 1 is a schematic structural diagram of the air-conditioning and refrigerator system provided in the exemplary embodiment of the present disclosure;

[0039] Figure 2 is a working principle diagram of the air-conditioning and refrigerator system provided in the exemplary embodiment of the present disclosure in the refrigeration mode (both the refrigerator and the air conditioner are refrigerating);

[0040] Figure 3 It is the working principle diagram of the air-conditioning refrigerator system provided in the exemplary embodiment of the present disclosure in the refrigeration mode (refrigerator refrigerates alone).

[0041] Figure 4 It is the working principle diagram of the air-conditioning refrigerator system provided in the exemplary embodiment of the present disclosure in the refrigeration mode (air conditioner refrigerates alone).

[0042] Figure 5 It is the working principle diagram of the air-conditioning refrigerator system provided in the exemplary embodiment of the present disclosure in the heating mode (refrigerator and air conditioner heat simultaneously).

[0043] Figure 6 It is the working principle diagram of the air-conditioning refrigerator system provided in the exemplary embodiment of the present disclosure in the heating mode (refrigerator heats alone).

[0044] Figure 7 It is the working principle diagram of the air-conditioning refrigerator system provided in the exemplary embodiment of the present disclosure in the heating mode (air conditioner heats alone).

[0045] Explanation of reference numerals:

[0046] 100, air-conditioning refrigerator system; 1, main compressor; 2, auxiliary compressor; 3, first heat exchanger; 4, air conditioner condenser; 5, refrigerator heat exchanger; 6, air conditioner evaporator; 7, second heat exchanger; 8, liquid storage device; 9, gas-liquid separation device; 10, first air conditioner throttling device; 101, first electronic expansion valve; 11, refrigerator throttling device; 111, second electronic expansion valve; 12, second air conditioner throttling device; 121, third electronic expansion valve; 13, first solenoid valve; 14, second solenoid valve; 15, third solenoid valve; 16, fourth solenoid valve; 17, first check valve; 18, second check valve; 19, third check valve; 20, automatic valve; 21, auxiliary throttling device. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0048] The present application provides an air-conditioning refrigerator system. Please refer to Figure 1 , Figure 1 which is the structural schematic diagram of the air-conditioning refrigerator system provided in the embodiment of the present application.

[0049] The air-conditioning refrigerator system 100 includes a refrigerant circuit, which includes a refrigerant trunk line. The refrigerant trunk line is provided with a main compressor 1, which drives the operation of the entire system. The main compressor 1 is the power source of the refrigerant cycle and is responsible for compressing the low-temperature and low-pressure refrigerant into the high-temperature and high-pressure refrigerant.

[0050] The refrigerant circuit also includes a refrigerator refrigerant branch and an air-conditioning refrigerant branch. The air-conditioning refrigerant branch is arranged in parallel with the refrigerator refrigerant branch and both are connected to the refrigerant trunk line. The refrigerator refrigerant branch and the air-conditioning refrigerant branch are arranged in parallel. The refrigerator and the air-conditioner share a main compressor 1, which saves costs and improves energy efficiency. The parallel arrangement allows independent control of the refrigerant circulation of the refrigerator and the air-conditioner. According to different usage modes and environmental conditions, the cooling / heating output can be flexibly adjusted to meet changing cooling / heating needs. The system is simplified, efficient and economical.

[0051] The refrigerator refrigerant branch includes a mainstream section, which is provided with a refrigerator heat exchanger 5. The refrigerator refrigerant branch also includes a throttling branch and a boosting branch. The throttling branch and the boosting branch are arranged in parallel and are both connected to the mainstream section. The boosting branch is provided with an auxiliary compressor 2, and the throttling branch is provided with an auxiliary throttling device 21. When the air-conditioning refrigerator system 100 is in the cooling mode, the boosting branch is turned on so that the refrigerant flowing out of the refrigerator heat exchanger 5 enters the main compressor 1 after being compressed by the auxiliary compressor 2; when the air-conditioning refrigerator system 100 is in the heating mode, the throttling branch is turned on so that the refrigerant flowing out of the main compressor 1 enters the refrigerator heat exchanger 5 after being throttled and reduced in pressure by the auxiliary throttling device 21.

[0052] Thus, by introducing the boosting branch section and the auxiliary compressor 2, the throttling branch section and the auxiliary throttling device 21, the operating efficiency and safety of the air-conditioning refrigerator system 100 are significantly improved, which is specifically reflected in the optimization in the cooling mode and the heating mode:

[0053] On the one hand, due to the setting of the boosting branch section and the auxiliary compressor 2, in the refrigeration mode, the boosting branch section is activated, and the auxiliary compressor 2 compresses the low-temperature and low-pressure refrigerant flowing out of the refrigerator heat exchanger 5, and increases the pressure of the refrigerant to match the pressure of the refrigerant flowing out of the air-conditioning evaporator 6. In this way, the refrigerator heat exchanger 5 and the air-conditioning evaporator 6 can work independently without affecting each other, ensuring the full and efficient heat transfer process, thereby achieving an excellent refrigeration effect. Through the boosting effect of the auxiliary compressor 2, the main compressor 1 is prevented from processing the refrigerant with too low pressure, the compressor pressure ratio is reduced, and the reliability and stability of the main compressor 1 are improved;

[0054] On the other hand, due to the setting of the throttling branch section and the auxiliary throttling device 21, in the heating mode, the throttling branch section is activated, and the auxiliary throttling device 21 throttles and reduces the pressure of the high-temperature and high-pressure refrigerant flowing out of the main compressor 1. In this way, when the refrigerant enters the refrigerator heat exchanger 5, it can release heat at a lower temperature for the heating and defrosting of the refrigerator, ensuring safety and efficiency. By throttling and reducing the pressure, safety risks such as scalding that may be caused by too high refrigerant temperature are avoided, and the safety of the system is improved.

[0055] In the technical solution of the present application, by introducing the boosting branch section and the auxiliary compressor 2, as well as the throttling branch section and the auxiliary throttling device 21, in the refrigeration mode, the boosting branch section is turned on, and the auxiliary compressor 2 compresses the low-temperature and low-pressure refrigerant flowing out of the refrigerator heat exchanger 5 to increase its pressure so that it matches the pressure of the refrigerant flowing out of the air-conditioning evaporator 6. The refrigerator heat exchanger 5 and the air-conditioning evaporator 6 do not affect each other, the heat transfer is sufficient, and the refrigeration effect is good. At the same time, the compression ratio of the main compressor 1 is avoided from being too high, increasing the reliability and stability of the main compressor 1; in the heating mode, the throttling branch section is turned on, and the auxiliary throttling device 21 throttles and reduces the pressure of the high-temperature and high-pressure refrigerant flowing out of the main compressor 1 so that it can release heat at a lower temperature when entering the refrigerator heat exchanger 5 for the heating and defrosting function of the refrigerator. At the same time, the risk of scalding that may be caused by too high refrigerant temperature is avoided. Compared with the related technology, the mutual interference between the air conditioner and the refrigerator is avoided, the refrigeration effect is good, and the refrigerator can be safely heated and defrosted, improving the reliability, stability and safety of the system.

[0056] The present application does not limit the specific structure of the auxiliary throttling device 21, and the auxiliary throttling device 21 can be an expansion valve or a capillary tube, etc.

[0057] The present application does not specifically limit how to achieve that in the refrigeration mode, the boosting branch section is turned on and the auxiliary compressor 2 works, while in the heating mode, the throttling branch section is turned on and the auxiliary throttling device 21 works. For example, on-off valves are arranged on both the boosting branch section and the throttling branch section. In the heating mode, the on-off valve on the boosting branch section is closed, and the on-off valve on the throttling branch section is opened, so that the throttling branch section is turned on and the auxiliary throttling device 21 works. In the refrigeration mode, the on-off valve on the throttling branch section is closed, and the on-off valve on the boosting branch section is opened, so that the boosting branch section is turned on and the auxiliary compressor 2 works.

[0058] In some embodiments, an automatic valve 20 is provided in the throttling branch section. The automatic valve 20 is a preloaded one-way valve, and the pre-tightening force of the automatic valve 20 is greater than the pressure difference between its input end and output end when the auxiliary compressor 2 is operating. When the air-conditioning refrigerator system 100 is in the refrigeration mode, the automatic valve 20 is closed to enable the auxiliary compressor 2 to compress the refrigerant flowing out of the refrigerator heat exchanger 5. When the air-conditioning refrigerator system 100 is in the heating mode, the automatic valve 20 is opened to enable the auxiliary throttling device 21 to throttle and reduce the pressure of the refrigerant flowing out of the main compressor 1. In these embodiments, in the refrigeration mode, the auxiliary compressor 2 compresses the refrigerant flowing out of the refrigerator heat exchanger 5 to increase its pressure. The pressure difference between the input end and output end of the auxiliary compressor 2 during operation is less than the pre-tightening force of the automatic valve 20. Therefore, this pressure is not sufficient to push open the automatic valve 20, ensuring that the automatic valve 20 remains closed in the refrigeration mode, the throttling branch section is cut off, and it will not affect the operation of the auxiliary compressor 2. The refrigerant flows through the pressurizing branch section, and the refrigerant flowing out of the refrigerator heat exchanger 5 can be effectively compressed and then flow to the main compressor 1. The refrigerator heat exchanger 5 and the air-conditioning evaporator 6 do not affect each other, the heat transfer is sufficient, the refrigeration effect is good, and at the same time, the compression ratio of the main compressor 1 is low, increasing the reliability and stability of the main compressor 1 and reducing the energy consumption. In the heating mode, the high-temperature and high-pressure refrigerant output by the main compressor 1 presses the exhaust valve of the auxiliary compressor 2 tightly, and at the same time, the automatic valve 20 is pushed open. The refrigerant is throttled and depressurized through the auxiliary throttling device 21, ensuring that the refrigerant can enter the refrigerator heat exchanger 5 at an appropriate temperature to achieve the heating function. Compared with the scheme of setting on-off valves in both the pressurizing branch section and the throttling branch section, the use of the preloaded one-way valve reduces the number of moving parts in the system, simplifies the maintenance requirements, and at the same time reduces the system complexity, making the system design more compact and economical. Through the characteristics of the preloaded one-way valve, the automatic switching of the conduction / cut-off of the pressurizing branch section and the throttling branch section can be realized, without the need for additional control signals to operate the opening and closing of the valve, reducing the design complexity of the control system, reducing potential failure points, and improving the stability and reliability of the system. In addition, the design of the preloaded one-way valve also has a certain self-protection function, which can prevent the reverse flow of the refrigerant to a certain extent and protect the stable operation of the system.

[0059] It can be understood that the refrigerator and the air conditioner share the main compressor 1. The refrigerator and the air conditioner can also share the main heat exchanger. The main heat exchanger is provided on the main refrigerant line, and the air-conditioning heat exchanger is provided on the air-conditioning refrigerant branch line. Among them, when the air-conditioning refrigerator system 100 is in the refrigeration mode, the refrigerant flows from the main compressor 1 through the main heat exchanger to the air-conditioning heat exchanger. When the air-conditioning refrigerator system 100 is in the heating mode, the refrigerant flows from the main compressor 1 through the air-conditioning heat exchanger to the main heat exchanger. That is, in the refrigeration mode, the main heat exchanger releases heat, and the air-conditioning heat exchanger absorbs heat. In the heating mode, the main heat exchanger absorbs heat, and the air-conditioning heat exchanger releases heat.

[0060] In some embodiments, a first heat exchanger 3 and a second heat exchanger 7 are further provided in the refrigerant main circuit; the air-conditioning refrigerant branch circuit includes an air-conditioning refrigeration branch circuit and an air-conditioning heating branch circuit. The air-conditioning refrigeration branch circuit is provided with an air-conditioning evaporator 6, and the air-conditioning heating branch circuit is provided with an air-conditioning condenser 4. When the air-conditioning refrigerator system 100 is in the refrigeration mode, the refrigerant flows from the main compressor 1 through the first heat exchanger 3 to the air-conditioning evaporator 6. When the air-conditioning refrigerator system 100 is in the heating mode, the refrigerant flows from the main compressor 1 through the air-conditioning condenser 4 to the second heat exchanger 7. In these embodiments, two independent heat exchangers (the first heat exchanger 3 and the second heat exchanger 7) are designed and respectively applied to the refrigeration and heating branch circuits of the air conditioner. According to different operating modes (refrigeration or heating) of the system, heat exchange between the refrigerant and the external environment or other vehicle systems is achieved through specific heat exchangers, so as to achieve the purpose of optimizing energy utilization. For example, the first heat exchanger 3 is arranged outside the vehicle and exchanges heat with the external environment of the vehicle. The second heat exchanger 7 is arranged corresponding to the engine cooling system of the vehicle (when the vehicle is a fuel vehicle, when the vehicle is a plug-in hybrid vehicle or a new energy vehicle, it is arranged corresponding to the battery cooling system) and exchanges heat with the engine cooling system (or the battery cooling system). In the refrigeration mode, after flowing out of the main compressor 1, the refrigerant first passes through the first heat exchanger 3, and the first heat exchanger 3 discharges the heat in the refrigerant into the external environment of the vehicle. Then the refrigerant flows to the air-conditioning evaporator 6, and the air-conditioning evaporator 6 absorbs the heat in the vehicle to achieve refrigeration in the vehicle. In the heating mode, the flow path of the refrigerant changes. After flowing out of the main compressor 1, it directly flows to the air-conditioning condenser 4, and the air-conditioning condenser 4 releases heat to the vehicle to achieve heating in the vehicle. Then the refrigerant flows to the second heat exchanger 7, and the second heat exchanger 7 absorbs heat and absorbs the heat of the engine cooling system (or the battery cooling system). By arranging the first heat exchanger 3 and the second heat exchanger 7 in the air-conditioning refrigerator system 100 and performing heat exchange according to different requirements of the refrigeration and heating modes, the system can effectively assist in the cooling of the engine (or the battery), avoid waste of cold sources, realize reasonable distribution and utilization of energy, and improve the adaptability and energy utilization efficiency of the vehicle under various environmental conditions. It can be understood that the settings of the first heat exchanger 3 and the second heat exchanger 7 are not limited to the application scenarios just mentioned, and the first heat exchanger 3 and the second heat exchanger 7 can also be adjusted as needed. For example, in some special climate conditions or personal preferences, there may be situations where people need to drink hot water when the air conditioner is refrigerating, or people need to drink cold water when the air conditioner is heating. Both the first heat exchanger 3 and the second heat exchanger 7 are arranged in the vehicle. The first heat exchanger 3 heats the drinking water for the in-vehicle drinking water system, and the second heat exchanger 7 is used to make cold drinks for the in-vehicle drinking water system. In this way, while ensuring the refrigeration and heating functions of the air conditioner, the first radiator and the second radiator can be flexibly set according to the needs of the usage scenario to achieve heat exchange between the refrigerant and the external environment or other vehicle systems, improve energy utilization efficiency, reduce energy waste, and provide multiple heat management functions under different environments and usage requirements.

[0061] It can be understood that on-off valves can be provided both between the refrigerant branch of the refrigerator and the second heat exchanger 7, and between the refrigerant branch of the refrigerator and the first heat exchanger 3. In the heating mode, the on-off valve between the refrigerant branch of the refrigerator and the first heat exchanger 3 is controlled to be closed, and the on-off valve between the refrigerant branch of the refrigerator and the second heat exchanger 7 is controlled to be opened, so as to realize the flow of the refrigerant from the refrigerant branch of the refrigerator to the second heat exchanger 7. In the cooling mode, the on-off valve between the refrigerant branch of the refrigerator and the second heat exchanger 7 is controlled to be closed, and the on-off valve between the refrigerant branch of the refrigerator and the first heat exchanger 3 is controlled to be opened, so as to realize the flow of the refrigerant from the first heat exchanger 3 to the refrigerant branch of the refrigerator.

[0062] In some embodiments, the air-conditioning refrigerator system 100 is provided with a first check valve 17 and a second check valve 18; the refrigerant branch of the refrigerator is connected to the second heat exchanger 7 through the first check valve 17, so that when the air-conditioning refrigerator system 100 is in the heating mode, the refrigerant flows from the refrigerant branch of the refrigerator through the first check valve 17 to the second heat exchanger 7; the refrigerant branch of the refrigerator is also connected to the first heat exchanger 3 through the second check valve 18, so that when the air-conditioning refrigerator system 100 is in the cooling mode, the refrigerant flows from the first heat exchanger 3 through the second check valve 18 to the refrigerant branch of the refrigerator. In these embodiments, when the air-conditioning refrigerator system 100 is in the cooling mode, the refrigerant first passes through the first heat exchanger 3, where the refrigerant absorbs heat and evaporates. Subsequently, the refrigerant flows through the second check valve 18 to the refrigerant branch of the refrigerator. The second check valve 18 ensures that the refrigerant can only flow from the first heat exchanger 3 to the refrigerant branch of the refrigerator and cannot flow in the reverse direction, thus ensuring the smooth progress of the refrigeration process. When the system switches to the heating mode, the refrigerant flow path changes. At this time, the refrigerant flows from the refrigerant branch of the refrigerator through the first check valve 17 to the second heat exchanger 7. The first check valve 17 ensures that the refrigerant can only flow from the refrigerant branch of the refrigerator to the second heat exchanger 7 and cannot flow backward. In the second heat exchanger 7, the refrigerant releases heat to provide the thermal energy required for the heating process. The first check valve 17 and the second check valve 18 ensure that the refrigerant can flow along the predetermined path in different operating modes, preventing reverse flow, so as to ensure that the system can operate efficiently and correctly in the cooling mode and the heating mode. Due to the characteristics of the check valve, it can automatically control the opening and closing through the pressure on both sides, has a simple structure, simplifies the control logic, reduces costs, and improves the system stability.

[0063] It can be understood that in order to realize the switching between the cooling mode and the heating mode, a four-way reversing valve can be installed in the system. The four-way reversing valve is a common component used for mode switching in a heat pump system. It can change the flow direction of the refrigerant, so as to realize the switching between the cooling mode and the heating mode. This application will not elaborate further.

[0064] In some embodiments, the air-conditioning refrigerator system 100 is provided with a first solenoid valve 13 and a second solenoid valve 14; the first solenoid valve 13 is connected between the main compressor 1 and the first heat exchanger 3, so that when the air-conditioning refrigerator system 100 is in the refrigeration mode, the refrigerant flows from the main compressor 1 through the first solenoid valve 13 to the first heat exchanger 3; the second solenoid valve 14 is connected between the main compressor 1 and the second heat exchanger 7, so that when the air-conditioning refrigerator system 100 is in the heat exchange mode, the refrigerant flows from the second heat exchanger 7 through the second solenoid valve 14 to the main compressor 1. In these embodiments, by introducing the first solenoid valve 13 and the second solenoid valve 14 and the corresponding flow path configuration to replace the four-way reversing valve, the switching between the refrigeration mode and the heating mode is realized. The first solenoid valve 13 and the second solenoid valve 14 can be controlled by simply being energized to open or close, without relying on the pressure difference, and the response speed is relatively fast, avoiding situations such as commutation delay and incomplete commutation that may occur in the four-way reversing valve, thereby improving the dynamic performance of the system during mode switching and enhancing the reliability and efficiency of the system.

[0065] In some embodiments, the air-conditioning refrigerator system 100 is provided with a third check valve 19; the first heat exchanger 3 is connected to the refrigerator refrigerant branch and / or the air-conditioning refrigeration branch through the third check valve 19, so that when the air-conditioning refrigerator system 100 is in the refrigeration mode, the refrigerant flows from the first heat exchanger 3 through the third check valve 19 to the refrigerator refrigerant branch and / or the air-conditioning refrigeration branch. In these embodiments, the design of adding the third check valve 19 to the air-conditioning refrigerator system 100 is such that when the air-conditioning refrigerator system 100 is in the refrigeration mode, the refrigerant coming out of the main compressor 1 first passes through the first heat exchanger 3 for heat exchange to absorb the heat of the external environment. Subsequently, through the third check valve 19, the refrigerant is guided to the refrigerator refrigerant branch and / or the air-conditioning refrigeration branch to refrigerate the refrigerator and / or the air-conditioning respectively. The third check valve 19 ensures that the refrigerant can only flow in this direction, preventing unnecessary circulation or short circuit in the system. The one-way control makes the refrigerant flow path clear, reduces the energy loss, improves the refrigeration efficiency, and preventing the refrigerant from flowing backward helps to maintain the stability of the system pressure and temperature, avoiding system failures that may be caused by the reverse flow. By controlling the refrigerant flow direction through the physical structure, the dependence on the electronic control system is reduced, the system control logic is simplified, and thus the refrigeration efficiency and operation stability of the system are improved.

[0066] In some embodiments, a refrigerator throttling device 11 is further provided on the main flow section. When the air-conditioning refrigerator system 100 is in the refrigeration mode, the refrigerator throttling device 11 throttles and reduces the pressure of the refrigerant flowing out of the first heat exchanger 3. When the air-conditioning refrigerator system 100 is in the heating mode, the refrigerator throttling device 11 throttles and reduces the pressure of the refrigerant flowing out of the refrigerator heat exchanger 5. That is, in the refrigeration mode, the refrigerant flows out of the first heat exchanger 3 (acting as a condenser at this time), passes through the refrigerator throttling device 11 for throttling and pressure reduction, and then enters the refrigerator heat exchanger 5 (acting as an evaporator). In this process, the refrigerator heat exchanger 5 absorbs heat to achieve refrigeration of the refrigerator. In the heating mode, the refrigerant flows out of the refrigerator heat exchanger 5 (acting as a condenser at this time), passes through the refrigerator throttling device 11 for throttling and pressure reduction, and then enters the second heat exchanger 7. In this process, the refrigerator heat exchanger 5 releases heat to achieve heating of the refrigerator. A first air-conditioning throttling device 10 is further provided on the air-conditioning heating branch. When the air-conditioning refrigerator system 100 is in the heating mode, the first air-conditioning throttling device 10 throttles and reduces the pressure of the refrigerant flowing out of the air-conditioning condenser 4. After the refrigerant flows out of the air-conditioning condenser 4, it passes through the first air-conditioning throttling device 10 for throttling and pressure reduction, and then enters the second heat exchanger 7. The air-conditioning condenser 4 releases heat to achieve heating of the air conditioner. A second air-conditioning throttling device 12 is further provided on the air-conditioning refrigeration branch. When the air-conditioning refrigerator system 100 is in the refrigeration mode, the second air-conditioning throttling device 12 throttles and reduces the pressure of the refrigerant flowing out of the first heat exchanger 3. That is, after the refrigerant flows out of the first heat exchanger 3 (acting as a condenser), it passes through the second air-conditioning throttling device 12 for throttling and pressure reduction, and then enters the air-conditioning evaporator 6. The air-conditioning evaporator 6 absorbs heat to achieve refrigeration of the air conditioner. By reasonably configuring the refrigerator throttling device 11, the first air-conditioning throttling device 10, and the second air-conditioning throttling device 12 in the air-conditioning refrigerator system 100, the operating efficiency and stability of the system can be effectively improved, ensuring that the expected performance can be achieved in both the refrigeration and heating modes.

[0067] This application does not limit the specific structures of the refrigerator throttling device 11, the first air-conditioning throttling device 10, and the second air-conditioning throttling device 12. These throttling devices can be expansion valves, throttling short pipes, etc. It can be understood that an ordinary expansion valve (such as a thermostatic expansion valve) itself does not have the functions of fully opening and on-off. In order to achieve fully opening and on-off control, it is usually necessary to cooperate with a check valve or a solenoid valve. The check valve is used to ensure the directionality of the refrigerant flow, while the solenoid valve can be used to control the opening and closing of the expansion valve.

[0068] In some embodiments, the first air conditioner throttling device 10 is the first electronic expansion valve 101, the refrigerator throttling device 11 is the second electronic expansion valve 111, and the second air conditioner throttling device 12 is the third electronic expansion valve 121. The modern electronic expansion valve design can achieve precise flow control and has a fully open function and a two-way throttling and cut-off function, which can replace the combination of traditional expansion valves, solenoid valves, and check valves, providing higher system efficiency and flexibility.

[0069] It can be understood that by providing on-off valves on both the refrigerator refrigerant branch and the air conditioner refrigerant branch, or throttling devices with a fully open function and a two-way throttling and cut-off function as in the previous example, it is possible to independently control the operation of the refrigerator and the air conditioner. For example, the air conditioner or the refrigerator can be operated separately when needed, or both can be operated simultaneously, so that the refrigeration mode of the air conditioner-refrigerator system 100 has three sub-modes: simultaneous refrigeration of the air conditioner and the refrigerator, separate refrigeration of the air conditioner, and separate refrigeration of the refrigerator. The heating mode of the air conditioner-refrigerator system 100 has three sub-modes: simultaneous heating of the air conditioner and the refrigerator, separate heating of the air conditioner, and separate heating of the refrigerator.

[0070] In some embodiments, the air-conditioning refrigerator system 100 is provided with a third solenoid valve 15 and a fourth solenoid valve 16; the refrigerator refrigerant branch is connected to the outlet end of the main compressor 1 through the third solenoid valve 15. When the air-conditioning refrigerator system 100 is in the heating mode, the refrigerant flows from the main compressor 1 through the third solenoid valve 15 to the refrigerator refrigerant branch; the refrigerator refrigerant branch is also connected to the inlet end of the main compressor 1 through the fourth solenoid valve 16, so that when the air-conditioning refrigerator system 100 is in the cooling mode, the refrigerant flows from the refrigerator refrigerant branch through the fourth solenoid valve 16 to the main compressor 1. In this embodiment, in the heating mode, the third solenoid valve 15 is opened to allow the refrigerant to directly flow from the outlet end of the main compressor 1 to the refrigerator refrigerant branch, while the fourth solenoid valve 16 is closed to prevent the refrigerant from flowing backward. It also allows the third solenoid valve 15 to be closed when the air conditioner is heating alone to avoid the refrigerant flowing into the refrigerator refrigerant branch. In the cooling mode, the fourth solenoid valve 16 is opened to allow the refrigerant to return from the refrigerator refrigerant branch to the inlet end of the main compressor 1, while the third solenoid valve 15 is closed to prevent the refrigerant from flowing backward. It also allows the fourth solenoid valve 16 to be closed when the air conditioner is cooling alone to avoid the refrigerant flowing into the refrigerator refrigerant branch. By controlling the refrigerant flow path with solenoid valves, it can ensure that the refrigerant only circulates in the branches that need to work, avoiding energy waste and improving the system efficiency. The opening and closing of the solenoid valves can prevent the refrigerant from flowing into the branches that do not need to work, avoiding the additional pressure and potential damage caused by the refrigerant circulating in the non-working branches to the components in the branches (such as the refrigerator throttling device 11, the auxiliary compressor 2, and the auxiliary throttling device 21). The precise control of the solenoid valves reduces the refrigerant flow interference between different branches, improving the stability and reliability of the system. By using the third solenoid valve 15 and the fourth solenoid valve 16, the system can precisely control the refrigerant flow path in the heating or cooling mode, ensuring that the energy is effectively utilized in the parts that need to work, reducing the refrigerant flow interference between different branches, and enhancing the stability and reliability of the system.

[0071] In some embodiments, a liquid storage device 8 is further provided in the refrigerant main line. The first heat exchanger 3 is located between the outlet end of the main compressor 1 and the liquid storage device 8. After the refrigerant comes out of the main compressor 1, it passes through the first heat exchanger 3 (acting as a condenser) and then flows to the liquid storage device 8. The liquid storage device 8 is located behind the first heat exchanger 3 at the outlet of the main compressor 1 and can store the liquid refrigerant flowing out of the first heat exchanger 3, playing a role in buffering and regulating the refrigerant circulation amount. This helps the system maintain the efficient operation of the first heat exchanger 3 under different load conditions and avoid the accumulation of liquid refrigerant affecting the condensation efficiency. The liquid storage device 8 can further separate the gaseous components in the refrigerant to ensure that only liquid refrigerant enters the subsequent throttling device, avoiding the "liquid hammer" phenomenon and protecting other components in the system.

[0072] In some embodiments, the refrigerant main circuit is also provided with a gas-liquid separation device 9, which is located between the second heat exchanger 7 and the inlet end of the main compressor 1. The gas-liquid separation device 9 is arranged between the second heat exchanger 7 (as an evaporator) and the inlet of the main compressor 1 to ensure that only the gaseous component of the refrigerant flowing out of the second heat exchanger 7 enters the compressor, and prevents the liquid refrigerant from directly entering the main compressor 1 to cause the "liquid hammer" phenomenon, thereby protecting the compressor from damage. By ensuring that the refrigerant at the inlet end of the main compressor 1 is gaseous, the efficiency of the compression process can be improved, the ineffective compression of the liquid refrigerant during the compression process can be avoided, the energy consumption can be reduced, and the overall energy efficiency of the refrigeration system can be improved. It can be understood that these embodiments can exist simultaneously with some of the above-mentioned embodiments, that is, the refrigerant main circuit is provided with a liquid storage device 8 and a gas-liquid separation device 9 at the same time. Through the combined use of the liquid storage device 8 and the gas-liquid separation device 9, the refrigerant pressure and flow in the system can be better stabilized, and the system performance and stability can be improved.

[0073] According to the second aspect of the present application, a vehicle is provided, including an air-conditioning refrigerator system 100. The air-conditioning refrigerator system 100 is as described above. Since the vehicle adopts all the technical solutions of all the above embodiments, it at least has the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0074] The vehicle may be a fuel vehicle, a plug-in hybrid vehicle or a new energy vehicle, etc., and this application does not make any specific limitation on this.

[0075] The present disclosure exemplarily describes the working process of the air-conditioning refrigerator system 100:

[0076] See also Figure 2 , the air-conditioning refrigerator system 100 is in cooling mode (refrigerator and air-conditioner are cooling at the same time):

[0077] The second electronic expansion valve 111 , the third electronic expansion valve 121 , the first solenoid valve 13 , and the fourth solenoid valve 16 are opened, and the first electronic expansion valve 101 , the second solenoid valve 14 , and the third solenoid valve 15 are closed.

[0078] The main compressor 1 discharges the compressed high-temperature and high-pressure refrigerant, which undergoes heat exchange through the first heat exchanger 3 and then passes through the liquid storage device 8 and the third one-way valve 19 in sequence and is divided into two paths. One path passes through the third electronic expansion valve 121 and the air-conditioning evaporator 6, and the other path passes through the second one-way valve 18, the second electronic expansion valve 111, the refrigerator heat exchanger 5, and then is pressurized by the auxiliary compressor 2, then merges, passes through the gas-liquid separation device 9, and finally returns to the main compressor 1.

[0079] See also Figure 3 , the air-conditioning refrigerator system 100 is in the cooling mode (refrigerator cooling alone):

[0080] The second electronic expansion valve 111, the first solenoid valve 13, and the fourth solenoid valve 16 are opened, and the first electronic expansion valve 101, the third electronic expansion valve 121, the second solenoid valve 14, and the third solenoid valve 15 are closed.

[0081] The main compressor 1 discharges the compressed high-temperature and high-pressure refrigerant. After heat exchange through the first heat exchanger 3, it sequentially passes through the liquid storage device 8 and the third one-way valve 19, then through the second one-way valve 18, the second electronic expansion valve 111, the refrigerator heat exchanger 5, is pressurized by the auxiliary compressor 2, passes through the gas-liquid separation device 9, and finally returns to the main compressor 1.

[0082] Please refer to Figure 4 , the air-conditioning refrigerator system 100 is in the refrigeration mode (air conditioner refrigerates alone):

[0083] The third electronic expansion valve 121 and the first solenoid valve 13 are opened, and the first electronic expansion valve 101, the second electronic expansion valve 111, the second solenoid valve 14, the third solenoid valve 15, and the fourth solenoid valve 16 are closed.

[0084] The main compressor 1 discharges the compressed high-temperature and high-pressure refrigerant. After heat exchange through the first heat exchanger 3, it sequentially passes through the liquid storage device 8 and the third one-way valve 19, then through the third electronic expansion valve 121, the air-conditioning evaporator 6, the gas-liquid separation device 9, and finally returns to the main compressor 1.

[0085] Please refer to Figure 5 , the air-conditioning refrigerator system 100 is in the heating mode (the refrigerator and the air conditioner heat simultaneously):

[0086] The first electronic expansion valve 101, the second electronic expansion valve 111, the second solenoid valve 14, and the third solenoid valve 15 are opened, and the third electronic expansion valve 121, the first solenoid valve 13, and the fourth solenoid valve 16 are closed.

[0087] After the main compressor 1 discharges the compressed high-temperature and high-pressure refrigerant, it is divided into two paths. One path exchanges heat through the air-conditioning condenser 4 and then passes through the first electronic expansion valve 101. The other path passes through the automatic valve 20, is throttled by the auxiliary throttling device 21 and enters the refrigerator heat exchanger 5, passes through the second electronic expansion valve 111 and the first one-way valve 17, then converges and enters the second heat exchanger 7 for heat exchange, passes through the gas-liquid separation device 9, and finally returns to the main compressor 1.

[0088] Please refer to Figure 6 , the air-conditioning refrigerator system 100 is in the heating mode (the refrigerator heats alone):

[0089] The second electronic expansion valve 111, the second solenoid valve 14, and the third solenoid valve 15 are opened, and the first electronic expansion valve 101, the third electronic expansion valve 121, the first solenoid valve 13, and the fourth solenoid valve 16 are closed.

[0090] The main compressor 1 discharges the compressed refrigerant at high temperature and high pressure. After passing through the automatic valve 20 and throttling through the auxiliary throttling device 21, it enters the refrigerator heat exchanger 5. Then, it passes through the second electronic expansion valve 111 and the first one-way valve 17, and subsequently enters the second heat exchanger 7 for heat exchange. After passing through the gas-liquid separation device 9, it finally returns to the main compressor 1.

[0091] Please refer to Figure 7 , the air-conditioning refrigerator system 100 is in the heating mode (the air conditioner heats alone):

[0092] The first electronic expansion valve 101 and the second solenoid valve 14 are opened, and the second electronic expansion valve 111, the third electronic expansion valve 121, the first solenoid valve 13, the third solenoid valve 15, and the fourth solenoid valve 16 are closed.

[0093] The main compressor 1 discharges the compressed refrigerant at high temperature and high pressure. After heat exchange through the air-conditioning condenser 4, it passes through the first electronic expansion valve 101, and then enters the second heat exchanger 7 for heat exchange. After passing through the gas-liquid separation device 9, it finally returns to the main compressor 1.

[0094] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0095] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0096] Among the embodiments, implementation manners, and related technical features of the present application, they can be combined and replaced with each other without conflict.

[0097] The above are only the preferred embodiments of the present application, and do not impose any form of limitation on the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. An air-conditioning refrigerator system for a vehicle, characterized in that: The air-conditioning refrigerator system includes a refrigerant circuit, and the refrigerant circuit includes: A refrigerant trunk line, wherein the refrigerant trunk line is provided with a main compressor; A refrigerator refrigerant branch is connected to the refrigerant trunk; the refrigerator refrigerant branch comprises a main flow section, a throttling branch section and a pressurizing branch section, the throttling branch section and the pressurizing branch section are arranged in parallel and are both connected to the main flow section; wherein the main flow section is provided with a refrigerator heat exchanger, the pressurizing branch section is provided with an auxiliary compressor, and the throttling branch section is provided with an auxiliary throttling device; An air-conditioning refrigerant branch circuit is arranged in parallel with the refrigerator refrigerant branch circuit and is connected to the refrigerant trunk circuit; Wherein, when the air-conditioning refrigerator system is in cooling mode, the boost branch section is turned on, so that the refrigerant flowing out of the refrigerator heat exchanger enters the main compressor after being compressed by the auxiliary compressor; When the air-conditioning refrigerator system is in heating mode, the throttling branch section is turned on, so that the refrigerant flowing out of the main compressor enters the refrigerator heat exchanger after being throttled and reduced in pressure by the auxiliary throttling device.

2. The air-conditioning refrigerator system according to claim 1, characterized in that: The throttling branch section is provided with an automatic valve, which is a pre-pressure one-way valve, and the pre-tightening force of the automatic valve is greater than the pressure difference between the input end and the output end of the auxiliary compressor when the auxiliary compressor is working; When the air-conditioning refrigerator system is in cooling mode, the automatic valve is closed to allow the auxiliary compressor to compress the refrigerant flowing out of the refrigerator heat exchanger; When the air-conditioning refrigerator system is in a heating mode, the automatic valve is turned on to enable the auxiliary throttling device to throttle and reduce the pressure of the refrigerant flowing out of the main compressor.

3. The air-conditioning refrigerator system according to claim 1, characterized in that: The refrigerant trunk circuit is also provided with a first heat exchanger and a second heat exchanger; The air conditioning refrigerant branch includes an air conditioning cooling branch and an air conditioning heating branch, the air conditioning cooling branch is provided with an air conditioning evaporator, and the air conditioning heating branch is provided with an air conditioning condenser; When the air-conditioning refrigerator system is in cooling mode, the refrigerant flows from the main compressor through the first heat exchanger to the air-conditioning evaporator; when the air-conditioning refrigerator system is in heating mode, the refrigerant flows from the main compressor through the air-conditioning condenser to the second heat exchanger.

4. The air-conditioning refrigerator system according to claim 3, characterized in that: The air-conditioning refrigerator system is provided with a first one-way valve and a second one-way valve; The refrigerator refrigerant branch is connected to the second heat exchanger through a first one-way valve, so that when the air-conditioning refrigerator system is in a heating mode, the refrigerant flows from the refrigerator refrigerant branch through the first one-way valve to the second heat exchanger; The refrigerator refrigerant branch is also connected to the first heat exchanger via a second one-way valve, so that when the air-conditioning refrigerator system is in cooling mode, the refrigerant flows from the first heat exchanger through the second one-way valve to the refrigerator refrigerant branch.

5. The air-conditioning refrigerator system according to claim 3, characterized in that: The air-conditioning refrigerator system is provided with a first solenoid valve and a second solenoid valve; The first solenoid valve is connected between the main compressor and the first heat exchanger, so that when the air-conditioning refrigerator system is in a cooling mode, the refrigerant flows from the main compressor to the first heat exchanger through the first solenoid valve; The second solenoid valve is connected between the main compressor and the second heat exchanger, so that when the air-conditioning refrigerator system is in a heat exchange mode, the refrigerant flows from the second heat exchanger to the main compressor through the second solenoid valve.

6. The air-conditioning refrigerator system according to claim 5, characterized in that: The air-conditioning refrigerator system is provided with a third one-way valve; The first heat exchanger is connected to the refrigerator refrigerant branch and / or the air-conditioning refrigeration branch through the third one-way valve, so that when the air-conditioning refrigerator system is in a cooling mode, the refrigerant flows from the first heat exchanger through the third one-way valve to the refrigerator refrigerant branch and / or the air-conditioning refrigeration branch.

7. The air-conditioning refrigerator system according to claim 3, characterized in that: The main flow section is also provided with a refrigerator throttling device, which throttles and reduces the pressure of the refrigerant flowing out of the first heat exchanger when the air-conditioning refrigerator system is in cooling mode, and throttles and reduces the pressure of the refrigerant flowing out of the refrigerator heat exchanger when the air-conditioning refrigerator system is in heating mode; The air conditioning heating branch is also provided with a first air conditioning shunt device, and when the air conditioning refrigerator system is in the heating mode, the first air conditioning shunt device throttles and reduces the pressure of the refrigerant flowing out of the air conditioning condenser; The air-conditioning refrigeration branch is also provided with a second air-conditioning flow regulating device. When the air-conditioning refrigerator system is in a refrigeration mode, the second air-conditioning flow regulating device throttles and reduces the pressure of the refrigerant flowing out of the first heat exchanger.

8. The air-conditioning refrigerator system according to claim 7, characterized in that: The air-conditioning refrigerator system is provided with a third solenoid valve and a fourth solenoid valve; The refrigerator refrigerant branch is connected to the outlet end of the main compressor through a third solenoid valve. When the air-conditioning refrigerator system is in heating mode, the refrigerant flows from the main compressor through the third solenoid valve to the refrigerator refrigerant branch; The refrigerator refrigerant branch is also connected to the inlet end of the main compressor through the fourth solenoid valve, so that when the air-conditioning refrigerator system is in cooling mode, the refrigerant flows from the refrigerator refrigerant branch through the fourth solenoid valve to the main compressor.

9. The air-conditioning refrigerator system according to claim 3, characterized in that: The refrigerant trunk line is further provided with a liquid storage device, and the first heat exchanger is located between the outlet end of the main compressor and the liquid storage device; and / or, The refrigerant trunk line is also provided with a gas-liquid separation device, and the gas-liquid separation device is located between the second heat exchanger and the inlet end of the main compressor.

10. A vehicle, characterized in that: An air-conditioning refrigerator system comprising any one of claims 1 to 9.

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