Vehicle-mounted air conditioner and refrigerator integrated system and vehicle

Abstract

The invention relates to the technical field of heat management, and provides a vehicle-mounted air conditioner and refrigerator integrated system and a vehicle. The vehicle-mounted air conditioner and refrigerator integrated system comprises an air conditioner module and a refrigerator module, and the air conditioner module comprises a compressor, a first heat exchanger, a first throttling element, a second heat exchanger and a gas-liquid separator; the refrigerator module comprises a second throttling element, a third heat exchanger and an ejector, a main inlet of the ejector is connected to an outlet of one of the first heat exchanger and the second heat exchanger serving as a condenser, an outlet of the ejector is connected to an inlet of the gas-liquid separator, and an outlet of the third heat exchanger is connected to an injection opening of the ejector. An inlet of the third heat exchanger is connected with an outlet of a second throttling element, an inlet of the second throttling element is connected to a liquid outlet of the gas-liquid separator, or the inlet of the second throttling element is connected to an outlet of the condenser. In this way, the problems that in the prior art, when a vehicle-mounted refrigerator is arranged on a vehicle, the number of parts is large, the occupied space is large, and power consumption of a compressor is high are solved.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology, and in particular to an integrated vehicle air conditioning and refrigerator system and vehicle. Background Technology

[0002] With the rapid development of the automotive industry and the increasing demand from consumers for driving comfort and multifunctionality, in-vehicle refrigerators, which can refrigerate beverages and food while driving, are gradually gaining attention and favor among users. Currently, there are two main types of in-vehicle refrigerators: semiconductor refrigeration and compressor refrigeration. Semiconductor refrigeration has a simple structure and low cost, but its energy efficiency and cooling capacity are relatively poor, and it is mainly used in scenarios such as beverage refrigeration boxes. Compressor refrigeration, on the other hand, has higher cooling efficiency and a wider temperature control range, enabling refrigeration and even freezing functions, and is therefore gradually becoming the mainstream solution for mid-to-high-end in-vehicle refrigerators.

[0003] However, compressor-cooled vehicle refrigerator systems have a relatively complex structure, requiring separate compressors, condensers, and evaporators. This results in a large number of components, higher costs, and a larger size, occupying limited space within the vehicle and increasing the difficulty of overall vehicle layout. Moreover, traditional compressor-cooled refrigerators generally use single-stage throttling, and expansion losses cannot be recovered, leading to a low system energy efficiency ratio and high compressor power consumption. This, in turn, increases vehicle energy consumption and affects the range of new energy vehicles.

[0004] Therefore, how to solve the problems of numerous components, large space occupation, and high compressor power consumption when installing vehicle-mounted refrigerators in related technologies has become an important technical problem to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides an integrated vehicle air conditioning and refrigerator system and vehicle, which solves the defects of related technologies in installing vehicle refrigerators, such as many parts, large space occupation, and high compressor power consumption.

[0006] This invention provides an integrated vehicle air conditioning and refrigerator system, comprising: An air conditioning module includes a compressor, a first heat exchanger, a first throttling element, a second heat exchanger, and a gas-liquid separator; The refrigerator module includes a second throttling element, a third heat exchanger, and an ejector. The main inlet of the ejector is connected to the outlet of the refrigerant passage of one of the first and second heat exchangers, which serves as a condenser. The outlet of the ejector is connected to the inlet of the gas-liquid separator. The outlet of the refrigerant passage of the third heat exchanger is connected to the ejector's inlet. The inlet of the refrigerant passage of the third heat exchanger is connected to the outlet of the second throttling element. The inlet of the second throttling element is connected to the liquid outlet of the gas-liquid separator. Alternatively, the inlet of the second throttling element is connected to the outlet of the refrigerant passage of one of the first and second heat exchangers, which serves as a condenser.

[0007] According to the present invention, an integrated vehicle air conditioning and refrigerator system is provided, wherein the refrigerator module further includes: A fourth heat exchanger is disposed between the ejector and the gas-liquid separator. The inlet of the refrigerant passage of the fourth heat exchanger is connected to the outlet of the ejector, and the outlet of the refrigerant passage of the fourth heat exchanger is connected to the inlet of the gas-liquid separator.

[0008] According to the present invention, an integrated vehicle air conditioning and refrigerator system is provided, wherein the inlet of the second throttling element is connected to the liquid outlet of the gas-liquid separator, and the refrigerator module further includes: A first control valve is located upstream of the main inlet of the injector. The first control valve is used to control the flow of refrigerant from the air conditioning module to the main inlet of the injector. The first control valve is an electric valve and is electrically connected to the control system.

[0009] According to the present invention, an integrated vehicle air conditioning and refrigerator system is provided, wherein the inlet of the second throttling element is connected to the outlet of the refrigerant passage of one of the first heat exchanger and the second heat exchanger, which serves as a condenser; the refrigerator module further includes: The second control valve is located upstream of the inlet of the second throttling element and the main inlet of the injector. The second control valve is used to control the flow of refrigerant from the air conditioning module to the main inlet of the injector and the inlet of the second throttling element. The second control valve is an electric valve and is electrically connected to the control system.

[0010] According to the present invention, an integrated vehicle air conditioning and refrigerator system is provided, wherein the air conditioning module is a single-cooling air conditioning module or a cooling and heating air conditioning module.

[0011] According to the present invention, an integrated vehicle air conditioning and refrigerator system is provided, wherein the compressor exhaust port, the refrigerant passage of the first heat exchanger, the first throttling element, the refrigerant passage of the second heat exchanger and the inlet of the gas-liquid separator are connected in sequence, the gas outlet of the gas-liquid separator is connected to the compressor suction port, the first heat exchanger serves as the condenser and the second heat exchanger serves as the evaporator.

[0012] The integrated vehicle air conditioning and refrigerator system provided by the present invention further includes: The first tee pipe connects the outlet of the refrigerant passage of the first heat exchanger, the inlet of the first throttling element, and the main inlet of the ejector. The outlet of the refrigerant passage of the second heat exchanger, the inlet of the gas-liquid separator, and the outlet of the ejector are connected by the second tee pipe.

[0013] According to the present invention, in an integrated vehicle air conditioning and refrigerator system, the second throttling element includes an expansion valve or a capillary tube.

[0014] According to the present invention, an integrated vehicle air conditioning and refrigerator system is provided, wherein the first heat exchanger, the second heat exchanger, the third heat exchanger and the third heat exchanger are refrigerant-air heat exchangers or refrigerant-coolant heat exchangers.

[0015] The present invention also provides a vehicle including the above-described integrated vehicle air conditioning and refrigerator system.

[0016] This invention provides an integrated vehicle air conditioning and refrigerator system, comprising an air conditioning module and a refrigerator module. The air conditioning module includes a compressor, a first heat exchanger, a first throttling element, a second heat exchanger, and a gas-liquid separator. One of the first and second heat exchangers can function as a condenser, and the other as an evaporator. The refrigerator module includes a second throttling element, a third heat exchanger, and an injector. The main inlet of the injector is connected to the outlet of the refrigerant passage of the first or second heat exchanger that functions as a condenser. The refrigerant in the air conditioning module, after passing through the compressor, forms a high-temperature, high-pressure gaseous refrigerant; after passing through the condenser, it forms a high-pressure subcooled liquid refrigerant. A portion of the high-pressure subcooled liquid refrigerant enters the evaporator of the air conditioning module for evaporation and heat absorption, while the other portion enters the injector of the refrigerator module. The outlet of the injector is connected to the inlet of the gas-liquid separator, the outlet of the refrigerant passage of the third heat exchanger is connected to the injector's inlet, and the inlet of the refrigerant passage of the third heat exchanger is connected to the outlet of the second throttling element. The inlet of the second throttling element is connected to the liquid outlet of the gas-liquid separator, or the inlet of the second throttling element is connected to the outlet of the refrigerant passage of one of the first and second heat exchangers, which serves as a condenser. The refrigerant in the refrigerant passage of the third heat exchanger can originate from the liquid refrigerant in the gas-liquid separator, or from the high-pressure subcooled liquid refrigerant output from the aforementioned condenser.

[0017] The high-pressure subcooled liquid refrigerant entering the ejector undergoes adiabatic expansion at the nozzle, converting pressure energy into kinetic energy and forming a high-speed, low-pressure jet, creating a low-pressure zone at the nozzle outlet. This forces refrigerant from the condenser or gas-liquid separator to be drawn into the ejector's inlet; this path of refrigerant serves as the ejector fluid. The refrigerant flowing towards the ejector's inlet must first pass through a second throttling element, causing a sharp drop in pressure. The refrigerant then enters the third heat exchanger, where it evaporates instantaneously, absorbing heat for cooling. This path of refrigerant transforms into gaseous refrigerant and enters the ejector's inlet again, forming the aforementioned ejector fluid. The ejector fluid mixes with the high-speed, low-pressure jet, which transfers momentum to the low-speed ejector fluid, gradually mixing to form a uniformly flowing fluid with a velocity lower than that of the high-speed, low-pressure jet. When the mixed fluid enters the diffuser chamber of the ejector, its velocity decreases, and its kinetic energy is converted into pressure energy. This causes the pressure at the outlet of the diffuser chamber to be higher than the pressure at the ejector port, thereby pressurizing the refrigerant and increasing the pressure at the compressor's suction port, which helps to reduce the compressor's power consumption.

[0018] This design integrates the air conditioning module and the refrigerator module, allowing them to share the condenser and compressor, effectively reducing the number of components and the space required. Furthermore, the injector design recovers expansion work, lowering compressor power consumption and overall system energy consumption. This improves the overall energy efficiency of the vehicle's thermal management system and solves the problems of numerous components, large space requirements, and high compressor power consumption associated with in-vehicle refrigerators in related technologies.

[0019] Furthermore, the vehicle provided by this invention possesses the integrated vehicle air conditioning and refrigerator system described above, and therefore also possesses the various advantages described above. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an integrated vehicle air conditioning and refrigerator system in one embodiment of the present invention.

[0022] Figure 2 yes Figure 1 A schematic diagram of the integrated vehicle air conditioning and refrigerator system in its first operating state.

[0023] Figure 3 yes Figure 1 A schematic diagram of the vehicle-mounted air conditioning and refrigerator integrated system operating in the second state.

[0024] Figure 4 yes Figure 1 A schematic diagram of the integrated vehicle air conditioning and refrigerator system operating in the third state.

[0025] Figure 5 yes Figure 1 The pressure-enthalpy diagram of the integrated vehicle air conditioning and refrigerator system in the first state.

[0026] Figure 6 yes Figure 1 The pressure-enthalpy diagram of the vehicle air conditioning and refrigerator integrated system in the second state.

[0027] Figure 7 yes Figure 1 The pressure-enthalpy diagram of the vehicle air conditioning and refrigerator integrated system in the third state.

[0028] Figure 8This is a schematic diagram of the integrated vehicle air conditioning and refrigerator system in another embodiment of the present invention when it is operating in the first state.

[0029] Figure 9 yes Figure 8 The pressure-enthalpy diagram of the integrated vehicle air conditioning and refrigerator system in the first operating state.

[0030] Figure 10 This is a schematic diagram of the integrated vehicle air conditioning and refrigerator system in the first state in another embodiment of the present invention.

[0031] Figure 11 yes Figure 10 The pressure-enthalpy diagram of the integrated vehicle air conditioning and refrigerator system in the first operating state.

[0032] Figure label: 1. Compressor; 2. First heat exchanger; 3. First throttling element; 4. Second heat exchanger; 5. Gas-liquid separator; 6. Refrigerator module; 7. Second throttling element; 8. Third heat exchanger; 9. Ejector; 10. Fourth heat exchanger; 11. First control valve; 12. Second control valve. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] The following is combined Figures 1 to 11 The present invention describes an integrated vehicle air conditioning and refrigerator system.

[0035] like Figures 1 to 11 As shown, the vehicle air conditioning and refrigerator integrated system provided in this embodiment of the invention includes an air conditioning module and a refrigerator module 6.

[0036] Specifically, the air conditioning module includes a compressor 1, a first heat exchanger 2, a first throttling element 3, a second heat exchanger 4, and a gas-liquid separator 5. One of the first heat exchanger 2 and the second heat exchanger 4 can function as a condenser, and the other can function as an evaporator.

[0037] The refrigerator module 6 includes a second throttling element 7, a third heat exchanger 8, and an ejector 9. The main inlet of the ejector 9 is connected to the outlet of the refrigerant passage in one of the first heat exchangers 2 and the second heat exchanger 4, which serves as the condenser. The refrigerant in the air conditioning module, after passing through the compressor 1, becomes a high-temperature, high-pressure gaseous refrigerant. After passing through the condenser, it becomes a high-pressure subcooled liquid refrigerant. A portion of the high-pressure subcooled liquid refrigerant enters the evaporator of the air conditioning module for evaporation and heat absorption, while the other portion enters the ejector 9 of the refrigerator module 6.

[0038] The outlet of ejector 9 is connected to the inlet of gas-liquid separator 5, the outlet of the refrigerant passage of the third heat exchanger 8 is connected to the ejector port of ejector 9, and the inlet of the refrigerant passage of the third heat exchanger 8 is connected to the outlet of the second throttling element 7. The inlet of the second throttling element 7 is connected to the liquid outlet of gas-liquid separator 5, or the inlet of the second throttling element 7 is connected to the outlet of the refrigerant passage of one of the first heat exchangers 2 and the second heat exchanger 4, which serves as a condenser. The refrigerant in the refrigerant passage of the third heat exchanger 8 can originate from the liquid refrigerant in gas-liquid separator 5, or from the high-pressure subcooled liquid refrigerant output from the aforementioned condenser.

[0039] The high-pressure subcooled liquid refrigerant entering the ejector 9 undergoes adiabatic expansion at the nozzle position, converting pressure energy into kinetic energy and forming a high-speed, low-pressure jet, creating a low-pressure zone at the nozzle outlet. This forces the refrigerant at the condenser position or the refrigerant at the gas-liquid separator 5 position to be drawn into the ejector port of the ejector 9; this refrigerant serves as the ejector fluid.

[0040] The refrigerant flowing to the ejector port of ejector 9 must first pass through the second throttling element 7, causing a sharp drop in refrigerant pressure. The refrigerant then enters the third heat exchanger 8, where it evaporates instantaneously, absorbing heat for cooling. This refrigerant is converted into a gaseous state and enters the ejector port of ejector 9, forming the aforementioned ejector fluid.

[0041] The ejector fluid and the high-speed, low-pressure jet mix. The high-speed, low-pressure jet transfers momentum to the low-speed ejector fluid, gradually mixing to form a mixed fluid with a uniform flow velocity, but lower than that of the high-speed, low-pressure jet. The mixed fluid enters the diffuser chamber of ejector 9, where its velocity decreases, and its kinetic energy is converted into pressure energy. This results in a higher pressure at the outlet of the diffuser chamber than at the ejector port, thereby pressurizing the refrigerant and increasing the pressure at the suction port of compressor 1, which helps reduce the power consumption of compressor 1.

[0042] In this configuration, the air conditioning module and the refrigerator module 6 are integrated together, allowing them to share the condenser and compressor 1, effectively reducing the number of components and the space occupied. Furthermore, the inclusion of the injector 9 enables the recovery of expansion work, reducing the power consumption of the compressor 1, lowering system energy consumption, and improving the overall energy efficiency of the vehicle's thermal management system. This solves the problems of numerous components, large space occupation, and high power consumption of the compressor 1 in related technologies when installing on-board refrigerators in vehicles.

[0043] It should be noted that the setting of injector 9 increases the suction pressure of compressor 1 and reduces the specific volume, enabling compressor 1 to draw in more refrigerant at the same speed. Even when only refrigerator module 6 is running, it is closer to the rated operating condition, thereby improving the matching degree between compressor 1 power and load, and improving system energy efficiency and operational stability.

[0044] The aforementioned third heat exchanger 8 serves as the refrigeration unit of the refrigerator module 6. By adjusting or designing the throttling capability of the second throttling element 7, the third heat exchanger 8 can meet the corresponding refrigeration requirements.

[0045] In a further embodiment, the refrigerator module 6 also includes a fourth heat exchanger 10, which is disposed between the ejector 9 and the gas-liquid separator 5. Figure 1 As shown, the inlet of the refrigerant channel of the fourth heat exchanger 10 is connected to the outlet of the ejector 9, and the outlet of the refrigerant channel of the fourth heat exchanger 10 is connected to the inlet of the gas-liquid separator 5.

[0046] After the refrigerant output from ejector 9 enters the fourth heat exchanger 10, it will further evaporate and absorb heat within the fourth heat exchanger 10. The fourth heat exchanger 10 also has a certain cooling effect, but its cooling capacity is lower than that of the third heat exchanger 8.

[0047] With this configuration, the third heat exchanger 8 and the fourth heat exchanger 10 are combined to provide two different cooling temperature zones. For the refrigerator module 6, the third heat exchanger 8 can be used for freezing, and the fourth heat exchanger 10 can be used for refrigeration, which can simultaneously meet the user's freezing and refrigeration needs and improve the user experience.

[0048] In one embodiment of the present invention, when the inlet of the second throttling element 7 is connected to the liquid outlet of the gas-liquid separator 5, the refrigerator module 6 further includes a first control valve 11.

[0049] The first control valve 11 is located upstream of the main inlet of the injector 9. Specifically, the inlet of the first control valve 11 is connected to the outlet of the refrigerant passage of one of the first heat exchangers 2 and 4, which serves as the condenser, and the outlet of the first control valve 11 is connected to the main inlet of the injector 9. The first control valve 11 is used to control the flow of refrigerant from the air conditioning module to the main inlet of the injector 9, that is, the first control valve 11 can control the flow of refrigerant from the air conditioning module to the refrigerator module 6.

[0050] When the refrigerator module 6 needs to be operated, the first control valve 11 is turned on, allowing the refrigerant from the air conditioning module to flow into the refrigerator module 6. When the refrigerator module 6 does not need to be operated, the first control valve 11 is turned off, preventing the refrigerant from the air conditioning module from flowing into the refrigerator module 6.

[0051] In another embodiment of the present invention, when the inlet of the second throttling element 7 is connected to the outlet of the refrigerant passage of one of the first heat exchanger 2 and the second heat exchanger 4, which serves as a condenser, the refrigerator module 6 further includes a second control valve 12.

[0052] The second control valve 12 is located upstream of the inlet of the second throttling element 7 and the main inlet of the ejector 9. The inlet of the second control valve 12 is connected to the outlet of the refrigerant passage of one of the condensers in the first heat exchanger 2 and the second heat exchanger 4. The outlet of the second control valve 12 is connected to both the inlet of the second throttling element 7 and the main inlet of the ejector 9. The second control valve 12 is used to control the flow of refrigerant from the air conditioning module to the main inlet of the ejector 9 and the inlet of the second throttling element 7; that is, the second control valve 12 can control the flow of refrigerant from the air conditioning module to the refrigerator module 6.

[0053] Accordingly, when the refrigerator module 6 needs to be operated, the second control valve 12 is turned on, allowing the refrigerant from the air conditioning module to flow to the refrigerator module 6. When the refrigerator module 6 does not need to be operated, the second control valve 12 is turned off, preventing the refrigerant from the air conditioning module from flowing to the refrigerator module 6.

[0054] The first control valve 11 and the second control valve 12 mentioned above are both electric valves. Both the first control valve 11 and the second control valve 12 are electrically connected to the control system to realize the automatic control of the start and stop of the refrigerator module 6.

[0055] In this embodiment of the invention, the air conditioning module can be either a cooling-only type or a cooling-and-heating type. The key is that the air conditioning module can provide high-pressure subcooled liquid refrigerant.

[0056] Reference Figure 1The refrigerator module 6 is integrated into the single-cooling air conditioning module. Specifically, the exhaust port of the compressor 1, the refrigerant passage of the first heat exchanger 2, the first throttling element 3, the refrigerant passage of the second heat exchanger 4, and the inlet of the gas-liquid separator 5 are connected in sequence, and the gas outlet of the gas-liquid separator 5 is connected to the suction port of the compressor 1.

[0057] When compressor 1 is running, the refrigerant condenses and releases heat at the first heat exchanger 2, and evaporates and absorbs heat at the second heat exchanger 4. The first heat exchanger 2 acts as a condenser, and the second heat exchanger 4 acts as an evaporator.

[0058] In this embodiment, the integrated vehicle air conditioning and refrigerator system also includes a first tee pipe and a second tee pipe.

[0059] A first tee pipe is installed between the outlet of the refrigerant passage of the first throttling element 3 and the first heat exchanger 2, and the main inlet of the ejector 9. The outlet of the refrigerant passage of the first heat exchanger 2, the inlet of the first throttling element 3, and the main inlet of the ejector 9 are connected by the first tee pipe. Specifically, the first port of the first tee pipe is connected to the outlet of the refrigerant passage of the first heat exchanger 2, the second port of the first tee pipe is connected to the inlet of the first throttling element 3, and the third port of the first tee pipe is connected to the main inlet of the ejector 9.

[0060] The second tee pipe is located between the outlet of the refrigerant passage of the second heat exchanger 4, the inlet of the gas-liquid separator 5, and the outlet of the ejector 9. These three points are connected via the second tee pipe. Specifically, the first port of the second tee pipe is connected to the inlet of the gas-liquid separator 5, the second port is connected to the outlet of the refrigerant passage of the second heat exchanger 4, and the third port is connected to the outlet of the ejector 9. When the refrigerator module 6 has a fourth heat exchanger 10, the third port of the second tee pipe is connected to the outlet of the refrigerant passage of the fourth heat exchanger 10.

[0061] The refrigerator module 6 and the air conditioning module are only connected at the first three-way pipe, the second three-way pipe and the liquid outlet of the gas-liquid separator 5. The refrigerator module 6 can be integrated into the existing air conditioning module without modifying the air conditioning module. This not only preserves the stability and reliability of the air conditioning module, but also simplifies the overall vehicle integration design, making maintenance and functional expansion easier.

[0062] In this embodiment, the first throttling element 3 is an expansion valve, and the opening degree of the expansion valve is adjustable.

[0063] The second heat exchanger 4 serves as a heat exchanger within the vehicle. When cooling of the vehicle interior is required, the expansion valve can be adjusted to a partially closed state. By adjusting the opening of the expansion valve, the cooling effect on the vehicle interior can be adjusted. When cooling of the vehicle interior is not required, the expansion valve can be adjusted to a fully closed state.

[0064] The second throttling element 7 mentioned above can be an expansion valve or a capillary tube.

[0065] Using an expansion valve as the second throttling element 7 allows for adjustment of the cooling capacity of the third heat exchanger 8. Using a capillary tube as the second throttling element 7 reduces costs.

[0066] In this embodiment, the first heat exchanger 2, the second heat exchanger 4, the third heat exchanger 8 and the third heat exchanger 8 are refrigerant-air heat exchangers or refrigerant-coolant heat exchangers.

[0067] In this embodiment of the invention, the integrated vehicle air conditioning and refrigerator system allows users to switch operating modes as needed. Figure 1 Taking the integrated vehicle air conditioning and refrigerator system as an example, when the refrigerator module 6 and the air conditioning module need to cool simultaneously, the first throttling element 3 is partially closed, and the first control valve 11 is open. At this time, the integrated vehicle air conditioning and refrigerator system operates in the first state, such as... Figure 2 As shown. When only air conditioning module cooling is needed, the first throttling element 3 is partially closed, and the first control valve 11 is closed. At this time, the vehicle air conditioning and refrigerator integrated system operates in the second state, as shown. Figure 3 As shown. When only the refrigerator module 6 needs cooling, the first throttling element 3 is fully closed, and the first control valve 11 is open. At this time, the integrated vehicle air conditioning and refrigerator system operates in the third state, as shown. Figure 4 As shown.

[0068] for Figure 1 The integrated vehicle air conditioning and refrigerator system shown below, in conjunction with... Figures 5 to 7 The pressure-enthalpy diagram shown describes the refrigerant cycle process when operating in the first, second, and third states. The pressure-enthalpy diagram, abbreviated as PH diagram, uses specific enthalpy on the horizontal axis and absolute pressure on the vertical axis.

[0069] For the first state, such as Figure 5As shown, the refrigerant at the discharge port of compressor 1 (corresponding to state point A) is cooled by the first heat exchanger 2 and converted into a subcooled liquid (corresponding to state point B), then splits into two paths. One path is throttled by the expansion valve (corresponding to state point C), evaporates and absorbs heat in the second heat exchanger 4, and then enters the gas-liquid separator 5 (corresponding to state point D). The other path enters the main inlet of ejector 9, mixes with the ejector fluid, and reaches the outlet of ejector 9 (corresponding to state point E). It then enters the fourth heat exchanger 10 for evaporation and heat absorption (corresponding to state point F), and enters the gas-liquid separator 5 for gas-liquid separation. The gas in the gas-liquid separator 5 (corresponding to state point D) enters the suction port of compressor 1, and the liquid in the gas-liquid separator 5 is throttled and depressurized by the capillary tube (corresponding to state point H). After evaporation and heat absorption in the third heat exchanger 8, it becomes a superheated gas (corresponding to state point I), and then enters the ejector port of ejector 9 to mix with the refrigerant entering through the main inlet of ejector 9 and increase its pressure.

[0070] For the second state, such as Figure 6 As shown, the refrigerant at the discharge port of compressor 1 (corresponding to state point J) is cooled by the first heat exchanger 2 and converted into a subcooled liquid (corresponding to state point K). Then, it is throttled by the expansion valve (corresponding to state point L), evaporated and heat-exchanged by the second heat exchanger 4 (corresponding to state point M), and then enters the suction port of compressor 1 through the gas-liquid separator 5 to complete the cycle.

[0071] For the third state, such as Figure 7 As shown, the refrigerant at the discharge port of compressor 1 (corresponding to state point O) is cooled by the first heat exchanger 2 and converted into a subcooled liquid (corresponding to state point P). It then enters the main inlet of ejector 9, mixes with the ejector fluid, and reaches the outlet of ejector 9 (corresponding to state point Q). Subsequently, it enters the fourth heat exchanger 10 for evaporation and heat absorption (corresponding to state point R), and then enters the gas-liquid separator 5 for gas-liquid separation. The gas in the gas-liquid separator 5 (corresponding to state point S) enters the suction port of compressor 1, while the liquid in the gas-liquid separator 5 undergoes capillary throttling and pressure reduction (corresponding to state point U). After evaporation and heat absorption in the third heat exchanger 8, it becomes a superheated gas (corresponding to state point V), which then enters the ejector port of ejector 9 and mixes with the refrigerant entering through the main inlet of ejector 9 to increase its pressure, completing the cycle.

[0072] for Figure 8 The integrated vehicle air conditioning and refrigerator system shown below, in conjunction with... Figure 9 The pressure-enthalpy diagram shown describes the refrigerant cycle process when it is operating in the first state.

[0073] like Figure 9As shown, the refrigerant at the discharge port of compressor 1 (corresponding to state point A') is cooled by the first heat exchanger 2 and converted into a subcooled liquid (corresponding to state point B'), then divided into three paths. The first path is throttled by the expansion valve (corresponding to state point C'), evaporates and absorbs heat in the second heat exchanger 4, and then enters the gas-liquid separator 5 (corresponding to state point D'). The second path enters the main inlet of ejector 9, mixes with the ejector fluid, and reaches the outlet of ejector 9 (corresponding to state point E'). After evaporating and absorbing heat in the fourth heat exchanger 10, it enters the gas-liquid separator 5 (corresponding to state point D'). The third path is throttled and depressurized by the capillary tube (corresponding to state point H'), evaporates and absorbs heat in the third heat exchanger 8, and becomes a superheated gas (corresponding to state point I'). It then enters the ejector port of ejector 9 and mixes with the refrigerant entering through the main inlet of ejector 9 to increase its pressure.

[0074] for Figure 10 The integrated vehicle air conditioning and refrigerator system shown below, in conjunction with... Figure 11 The pressure-enthalpy diagram shown describes the refrigerant cycle process when it is operating in the first state.

[0075] like Figure 11 As shown, the refrigerant at the discharge port of compressor 1 (corresponding to state point A'') is cooled by the first heat exchanger 2 and converted into a subcooled liquid (corresponding to state point B''), then split into two paths. One path is throttled by the expansion valve (corresponding to state point C''), evaporates and absorbs heat in the second heat exchanger 4, and then enters the gas-liquid separator 5 (corresponding to state point D''), subsequently entering the suction port of compressor 1. The other path enters the main inlet of ejector 9, mixes with the ejector fluid, and reaches the outlet of ejector 9 (corresponding to state point E''), then enters the gas-liquid separator 5 for gas-liquid separation. The gas in gas-liquid separator 5 (corresponding to state point D'') enters the suction port of compressor 1, and the liquid in gas-liquid separator 5 is throttled and depressurized by the capillary tube (corresponding to state point H''), evaporates and absorbs heat in the third heat exchanger 8, becoming a superheated gas (state point I''), which then enters the ejector port of ejector 9 and mixes with the refrigerant entering through the main inlet of ejector 9 to increase its pressure.

[0076] In summary, the integrated vehicle air conditioning and refrigerator system provided in this embodiment of the invention utilizes the ejector 9 to recover expansion work, reducing the power consumption of the compressor 1 and improving the coefficient of performance (COP). Furthermore, it incorporates a third heat exchanger 8 and a fourth heat exchanger 10 to achieve independent control of both refrigeration and freezing temperature zones, meeting multi-temperature storage needs and improving overall energy efficiency and operational stability. Additionally, it achieves rapid coupling and decoupling between the refrigerator module 6 and the air conditioning module, enabling key components of the refrigerator module 6 to work collaboratively with the air conditioning module. This simplifies the overall vehicle integration design, reduces the number of parts, simplifies the structure and piping layout, lowers manufacturing and maintenance costs, and ensures that the performance of the original air conditioning module remains unaffected.

[0077] On the other hand, embodiments of the present invention also provide a vehicle including the integrated vehicle air conditioning and refrigerator system provided in any of the above embodiments. The integrated vehicle air conditioning and refrigerator system provided in any of the above embodiments has a high degree of integration, occupies little space, and has low power consumption of compressor 1. Therefore, the vehicle provided in this embodiment has the advantages of compact structure, low energy consumption, and long range. The derivation process of the beneficial effects of the vehicle in the embodiments of the present invention is largely similar to the derivation process of the beneficial effects of the integrated vehicle air conditioning and refrigerator system described above, and therefore will not be repeated here.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated vehicle air conditioning and refrigerator system, characterized in that, include: An air conditioning module includes a compressor (1), a first heat exchanger (2), a first throttling element (3), a second heat exchanger (4), and a gas-liquid separator (5). The refrigerator module (6) includes a second throttling element (7), a third heat exchanger (8), and an ejector (9). The main inlet of the ejector (9) is connected to the outlet of the refrigerant passage of one of the first heat exchanger (2) and the second heat exchanger (4), which serves as a condenser. The outlet of the ejector (9) is connected to the inlet of the gas-liquid separator (5). The outlet of the refrigerant passage of the third heat exchanger (8) is connected to the ejector port of the ejector (9). The inlet of the refrigerant passage of the third heat exchanger (8) is connected to the outlet of the second throttling element (7). The inlet of the second throttling element (7) is connected to the liquid outlet of the gas-liquid separator (5). Alternatively, the inlet of the second throttling element (7) is connected to the outlet of the refrigerant passage of one of the first heat exchanger (2) and the second heat exchanger (4), which serves as a condenser.

2. The integrated vehicle air conditioning and refrigerator system according to claim 1, characterized in that, The refrigerator module (6) also includes: The fourth heat exchanger (10) is located between the ejector (9) and the gas-liquid separator (5). The inlet of the refrigerant channel of the fourth heat exchanger (10) is connected to the outlet of the ejector (9), and the outlet of the refrigerant channel of the fourth heat exchanger (10) is connected to the inlet of the gas-liquid separator (5).

3. The integrated vehicle air conditioning and refrigerator system according to claim 1 or 2, characterized in that, The inlet of the second throttling element (7) is connected to the liquid outlet of the gas-liquid separator (5), and the refrigerator module (6) further includes: The first control valve (11) is located upstream of the main inlet of the injector (9). The first control valve (11) is used to control the flow of refrigerant from the air conditioning module to the main inlet of the injector (9). The first control valve (11) is an electric valve and is electrically connected to the control system.

4. The integrated vehicle air conditioning and refrigerator system according to claim 1 or 2, characterized in that, The inlet of the second throttling element (7) is connected to the outlet of the refrigerant passage of one of the condensers in the first heat exchanger (2) and the second heat exchanger (4). The refrigerator module (6) further includes: The second control valve (12) is located upstream of the inlet of the second throttling element (7) and the main inlet of the injector (9). The second control valve (12) is used to control the flow of refrigerant from the air conditioning module to the main inlet of the injector (9) and the inlet of the second throttling element (7). The second control valve (12) is an electric valve and is electrically connected to the control system.

5. The integrated vehicle air conditioning and refrigerator system according to claim 1, characterized in that, The air conditioning module is either a cooling-only air conditioning module or a cooling and heating air conditioning module.

6. The integrated vehicle air conditioning and refrigerator system according to claim 1, characterized in that, The exhaust port of the compressor (1), the refrigerant passage of the first heat exchanger (2), the first throttling element (3), the refrigerant passage of the second heat exchanger (4) and the inlet of the gas-liquid separator (5) are connected in sequence. The gas outlet of the gas-liquid separator (5) is connected to the suction port of the compressor (1). The first heat exchanger (2) serves as the condenser and the second heat exchanger (4) serves as the evaporator.

7. The integrated vehicle air conditioning and refrigerator system according to claim 6, characterized in that, Also includes: The first tee pipe connects the outlet of the refrigerant passage of the first heat exchanger (2), the inlet of the first throttling element (3), and the main inlet of the ejector (9). The outlet of the refrigerant passage of the second heat exchanger (4), the inlet of the gas-liquid separator (5), and the outlet of the ejector (9) are connected through the second three-way pipe.

8. The integrated vehicle air conditioning and refrigerator system according to claim 1, characterized in that, The second throttling element (7) includes an expansion valve or a capillary tube.

9. The integrated vehicle air conditioning and refrigerator system according to claim 1, characterized in that, The first heat exchanger (2), the second heat exchanger (4), the third heat exchanger (8) and the third heat exchanger (8) are refrigerant-air heat exchangers or refrigerant-coolant heat exchangers.

10. A vehicle, characterized in that, Including the integrated vehicle air conditioning and refrigerator system as described in any one of claims 1-9.

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