Vehicle refrigeration system and vehicle

Abstract

The present invention discloses a vehicle refrigeration system and vehicle, characterized by comprising: an on-board air conditioner, an on-board thermal insulation box, and a control component, wherein the on-board air conditioner comprises a compressor, an outdoor heat exchanger, an air conditioner condenser, and an air conditioner evaporator; the on-board thermal insulation box comprises an insulation box condenser and an insulation box evaporator; wherein the insulation box condenser and the air conditioner condenser are connected in parallel to form a heating flow path, the insulation box evaporator and the air conditioner evaporator are connected in parallel to form a cooling flow path, the compressor, the heating flow path, and the outdoor heat exchanger are connected in sequence to form a heating circuit, and the compressor, the outdoor heat exchanger, and the cooling flow path are connected in sequence to form a cooling circuit; the control component is used to control the refrigeration system to switch between the heating circuit and the cooling circuit. According to the refrigeration system of the embodiment of the present invention, the on-board thermal insulation box and the on-board air conditioner can both achieve cooling and heating, and the cost of the refrigeration system is low.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and in particular to a vehicle refrigeration system and the vehicle. Background Art

[0002] Vehicles are playing an increasingly important role in our daily lives. In addition to car air conditioners, car refrigerators are also becoming increasingly popular for storing common items such as food, beverages, and medicine. However, existing technologies for car air conditioners and refrigerators use independent refrigeration systems, which is costly. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a vehicle refrigeration system in which a heat preservation box condenser is connected in parallel with an air conditioning box condenser to form a heating flow path, so that both the vehicle heat preservation box and the vehicle air conditioning can achieve heating. The heat preservation box evaporator is connected in parallel with the air conditioning box evaporator to form a cooling flow path, so that both the vehicle heat preservation box and the vehicle air conditioning can achieve cooling. In addition, the refrigeration circuit and the heating circuit share a compressor, outdoor heat exchanger, and control components, making the refrigeration system simple in structure and low in cost.

[0004] The present invention also provides a vehicle having the above refrigeration system.

[0005] According to an embodiment of the first aspect of the present invention, a refrigeration system for a vehicle includes: an on-board air conditioner, the on-board air conditioner including a compressor, an outdoor heat exchanger, an air-conditioning box condenser and an air-conditioning box evaporator; an on-board thermal insulation box, the on-board thermal insulation box including an insulation box condenser and an insulation box evaporator; wherein the insulation box condenser and the air-conditioning box condenser are connected in parallel to form a heating flow path, and the insulation box evaporator and the air-conditioning box evaporator are connected in parallel to form a cooling flow path, one end of the heating flow path is connected to the exhaust port of the compressor, and one end of the cooling flow path is connected to the return air port of the compressor, the outdoor heat exchanger is connected between the other end of the heating flow path and the return air port of the compressor, and the outdoor heat exchanger is connected between the other end of the cooling flow path and the exhaust port of the compressor, the compressor, the heating flow path and the outdoor heat exchanger are connected in sequence to form a heating circuit, and the compressor, the outdoor heat exchanger and the cooling flow path are connected in sequence to form a cooling circuit; a control component, the control component is used to control the refrigeration system to switch between the heating circuit and the cooling circuit.

[0006] According to the refrigeration system of an embodiment of the present invention, the insulated box condenser and the air-conditioning box condenser are connected in parallel to form a heating flow path, so that both the vehicle-mounted insulated box and the vehicle-mounted air conditioner can achieve heating, and the insulated box evaporator and the air-conditioning box evaporator are connected in parallel to form a cooling flow path, so that both the vehicle-mounted insulated box and the vehicle-mounted air conditioner can achieve cooling. In addition, the refrigeration circuit and the heating circuit share a compressor, an outdoor heat exchanger and a control component, so that the structure of the refrigeration system is simple and the cost is low.

[0007] According to some embodiments of the present invention, the heating flow path includes a first heating branch and a second heating branch connected in parallel, the air conditioning box condenser is connected in series to the first heating branch, and the insulation box condenser is connected in series to the second heating branch, and the on-off of the first heating branch and the on-off of the second heating branch are relatively independently controlled;

[0008] And / or, the refrigeration circuit includes a first refrigeration branch and a second refrigeration branch connected in parallel, the air-conditioning box evaporator is connected in series to the first refrigeration branch, and the insulation box evaporator is connected in series to the second refrigeration branch, and the on-off of the first refrigeration branch and the on-off of the second refrigeration branch are relatively independently controlled.

[0009] According to some embodiments of the present invention, the control component includes: a first control valve group, the first control valve group includes a first control valve and a second control valve, the first control valve is connected between the exhaust port and one end of the heating flow path to control the on-off of the flow path between the exhaust port and one end of the heating flow path, and the second control valve is connected between the outdoor heat exchanger and the return air port to control the on-off of the flow path between the outdoor heat exchanger and the return air port; a second control valve group, the second control valve group includes a third control valve and a fourth control valve, the third control valve is connected between the exhaust port and the outdoor heat exchanger to control the on-off of the flow path between the exhaust port and the outdoor heat exchanger, and the fourth control valve is connected between the outdoor heat exchanger and the other end of the cooling flow path to control the on-off of the flow path between the outdoor heat exchanger and the other end of the cooling flow path.

[0010] According to some optional embodiments of the present invention, the heating flow circuit includes a first heating branch and a second heating branch connected in parallel, the air-conditioning box condenser is connected in series to the first heating branch, and the insulation box condenser is connected in series to the second heating branch; the cooling flow circuit includes a first cooling branch and a second cooling branch connected in parallel, the air-conditioning box evaporator is connected in series to the first cooling branch, and the insulation box evaporator is connected in series to the second cooling branch; the exhaust port is connected to one end of the heating flow circuit by a first connecting pipe, the other end of the heating flow circuit is connected to the outdoor heat exchanger by a second connecting pipe, and the outdoor heat exchanger is connected to the return air port by a third connecting pipe; the exhaust port is connected to the outdoor heat exchanger by a fourth connecting pipe, the outdoor heat exchanger is connected to the first heating branch by a fifth connecting pipe, and the fifth connecting pipe is connected to the first heating branch The connection point of the circuit is a first connection point, the first connection point is located on the side of the air-conditioning box condenser away from the exhaust port, the other end of the refrigeration circuit is connected to the second heating branch through a sixth connecting pipe, the connection point of the sixth connecting pipe and the second heating branch is a second connection point, the second connection point is located on the side of the insulation box condenser away from the exhaust port, and one end of the refrigeration circuit is connected to the return air port through a seventh connecting pipe; wherein, the first control valve is connected in series with the first connecting pipe or the first heating branch and the second heating branch are both connected in series with the first control valve, the second control valve is connected in series with the third connecting pipe, the third control valve is connected in series with the fourth connecting pipe, the fourth control valve is connected in series with the sixth connecting pipe, the fifth connecting pipe is connected in series with the fifth control valve, and the fifth control valve is used to control the on and off of the fifth connecting pipe.

[0011] In some optional embodiments of the present invention, the fifth control valve is a one-way valve, and the fifth control valve is unidirectionally conductive in a direction from the outdoor heat exchanger to the first heating branch.

[0012] In some optional embodiments of the present invention, the first heating branch is further connected in series with a sixth control valve, which is a one-way valve. The sixth control valve is located between the first connection point and the air-conditioning box condenser, and the sixth control valve is unidirectionally conductive in the direction from the air-conditioning box condenser to the first connection point; the first cooling branch is further connected in series with a seventh control valve, which is a one-way valve. The seventh control valve is located on the side of the air-conditioning box evaporator adjacent to the return air port, and the seventh control valve is unidirectionally conductive in the direction from the air-conditioning box evaporator to the return air port.

[0013] In some optional embodiments of the present invention, the first heating branch is further connected in series with a filter dryer, and the filter dryer is located on the side of the first connection point away from the air-conditioning box condenser; and / or, the second connecting pipe is connected in series with a first throttling component, the first refrigeration branch is connected in series with a second throttling component, and the second refrigeration branch is connected in series with a third throttling component.

[0014] According to some optional embodiments of the present invention, the first throttling component, the second throttling component and the third throttling component are all throttle valves.

[0015] According to some embodiments of the present invention, the vehicle-mounted thermal insulation box includes: a box body, the box body includes a box main body and a box cover, a accommodating cavity is defined in the box main body, and the box cover is provided on the box main body for opening and closing the accommodating cavity; a sealed shell, the sealed shell is provided at the bottom of the box body and defines an installation cavity between the sealed shell and the box body, the thermal insulation box condenser and the thermal insulation box evaporator are both provided in the installation cavity, and the installation cavity and the accommodating cavity are connected through a ventilation structure.

[0016] According to some optional embodiments of the present invention, the installation cavity is further provided with an air supply fan, and the air supply fan is used to blow the air flow in the installation cavity into the accommodating cavity.

[0017] A vehicle according to an embodiment of a second aspect of the present invention includes: a refrigeration system according to the embodiment of the first aspect of the present invention.

[0018] According to the vehicle of an embodiment of the present invention, by arranging the above-mentioned refrigeration system in the vehicle, the insulated box condenser and the air-conditioning box condenser are connected in parallel to form a heating flow path, so that both the vehicle-mounted insulated box and the vehicle-mounted air conditioner can achieve heating, and the insulated box evaporator and the air-conditioning box evaporator are connected in parallel to form a cooling flow path, so that both the vehicle-mounted insulated box and the vehicle-mounted air conditioner can achieve cooling. In addition, the refrigeration circuit and the heating circuit share a compressor, an outdoor heat exchanger and a control component, so that the structure of the refrigeration system is simple and the cost is low.

[0019] According to some embodiments of the present invention, the vehicle-mounted thermal insulation box is arranged in the front cabin of the vehicle.

[0020] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0022] Figure 1 is a schematic diagram of a refrigeration system according to some embodiments of the present invention;

[0023] Figure 2 is a schematic diagram of a refrigeration system according to some other embodiments of the present invention;

[0024] Figure 3 yes Figure 1 Schematic diagram of the refrigeration circuit. The direction of the arrow in the refrigeration circuit indicates the flow direction of the refrigerant;

[0025] Figure 4 yes Figure 1 Schematic diagram of the heating circuit. The arrows in the heating circuit indicate the flow direction of the refrigerant.

[0026] Figure 5 yes Figure 2 Schematic diagram of the heating circuit. The arrows in the heating circuit indicate the flow direction of the refrigerant.

[0027] Figure 6 is a perspective view of a vehicle-mounted thermal insulation box according to some embodiments of the present invention.

[0028] Reference numerals:

[0029] 100. Refrigeration system;

[0030] 10. Vehicle-mounted thermal insulation box; 11. Box body; 110. Box body; 111. Accommodation chamber; 112. Box cover; 12. Sealed housing; 13. Installation chamber; 131. Thermal insulation box condenser; 132. Thermal insulation box evaporator; 133. Air supply fan;

[0031] 21. Compressor; 211. Exhaust port; 212. Return air port; 22. Outdoor heat exchanger; 23. Air conditioning box condenser; 24. Air conditioning box evaporator; 25. Outdoor fan;

[0032] 311, first control valve; 312, second control valve; 321, third control valve; 322, fourth control valve; 331, first connection point; 332, second connection point; 341, fifth control valve; 342, sixth control valve; 343, seventh control valve; 35, filter-drier; 361, first throttle component; 362, second throttle component; 363, third throttle component; 371, first connecting line; 372, second connecting line; 373, third connecting line; 374, fourth connecting line; 375, fifth connecting line; 376, sixth connecting line; 377, seventh connecting line; 381, first sensor; 382, ​​second sensor;

[0033] 40. Refrigeration circuit; 41. Refrigeration flow path; 42. First refrigeration branch; 43. Second refrigeration branch;

[0034] 50. Heating circuit; 51. Heating flow path; 52. First heating branch; 53. Second heating branch;

[0035] 60. Electric auxiliary heating components. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0037] Reference below Figures 1-6 A refrigeration system 100 for a vehicle according to an embodiment of the present invention will be described.

[0038] Reference Figure 1 and Figure 2 A vehicle refrigeration system 100 according to a first embodiment of the present invention includes an onboard air conditioner, an onboard insulated box 10, and a control assembly. The onboard air conditioner includes a compressor 21, an outdoor heat exchanger 22, an air conditioner condenser 23, and an air conditioner evaporator 24. The onboard insulated box 10 includes an insulated box condenser 131 and an insulated box evaporator 132. The insulated box condenser 131 and the air conditioner condenser 23 are connected in parallel to form a heating flow path 51, enabling heating of the onboard insulated box 10 and the onboard air conditioner. The insulated box evaporator 132 and the air conditioner evaporator 24 are connected in parallel to form a cooling flow path 41, enabling cooling of the onboard insulated box 10 and the onboard air conditioner.

[0039] Reference Figure 1 and Figure 2 One end of the heating flow path 51 is connected to the exhaust port 211 of the compressor 21, and one end of the cooling flow path 41 is connected to the return air port 212 of the compressor 21. The outdoor heat exchanger 22 is connected between the other end of the heating flow path 51 and the return air port 212 of the compressor 21, and the outdoor heat exchanger 22 is connected between the other end of the cooling flow path 41 and the exhaust port 211 of the compressor 21. The compressor 21, the heating flow path 51, and the outdoor heat exchanger 22 are connected in sequence to form a heating circuit 50. The compressor 21, the outdoor heat exchanger 22, and the cooling flow path 41 are connected in sequence to form a cooling circuit 40. Both the heating circuit 50 and the cooling circuit 40 contain refrigerant. The control component is used to control the refrigeration system 100 to switch between the heating circuit 50 and the cooling circuit 40, thereby controlling the temperature of the vehicle air conditioner and the vehicle thermal insulation box 10.

[0040] Compressor 21 compresses refrigerant. When refrigeration system 100 is cooling, refrigerant flows out of compressor 21's exhaust port 211 and into outdoor heat exchanger 22. After heat exchange in outdoor heat exchanger 22, the refrigerant flows into cooling flow path 41. The refrigerant flowing out of cooling flow path 41 flows back to compressor 21 through return air port 212. When refrigeration system 100 is heating, refrigerant flows out of compressor 21's exhaust port 211 and into heating flow path 51. The refrigerant flowing out of the cooling and heating paths flows into outdoor heat exchanger 22. After heat exchange in outdoor heat exchanger 22, the refrigerant flows back to compressor 21 through return air port 212. By connecting the insulated box condenser 131 in parallel with the air conditioning box condenser 23, and the insulated box evaporator 132 in parallel with the air conditioning box evaporator 24, the temperature of the vehicle air conditioner and vehicle insulated box 10 can be controlled. The heating circuit 50 and the refrigeration circuit 40 share the compressor 21 , the outdoor heat exchanger 22 and the control components, so that the refrigeration system 100 has a simple structure and low cost.

[0041] Reference Figure 4 and Figure 5 According to some embodiments of the present invention, the heating flow path 51 includes a first heating branch 52 and a second heating branch 53. The first heating branch 52 and the second heating branch 53 are connected in parallel. The air conditioning box condenser 23 is connected in series to the first heating branch 52, and the insulation box condenser 131 is connected in series to the second heating branch 53. The on-off of the first heating branch 52 and the on-off of the second heating branch 53 are relatively independently controlled. When the first heating branch 52 and the second heating branch 53 are both connected, simultaneous heating of the vehicle insulation box 10 and the vehicle air conditioner can be achieved. When the first heating branch 52 is disconnected and the second heating branch 53 is connected, independent heating of the vehicle insulation box 10 can be achieved. When the first heating branch 52 is connected and the second heating branch 53 is disconnected, independent heating of the vehicle air conditioner can also be achieved.

[0042] Reference Figure 3 According to some embodiments of the present invention, the refrigeration circuit 41 includes a first refrigeration branch 42 and a second refrigeration branch 43. The first refrigeration branch 42 and the second refrigeration branch 43 are connected in parallel. The air conditioning box evaporator 24 is connected in series to the first refrigeration branch 42, and the insulation box evaporator 132 is connected in series to the second refrigeration branch 43. The on-off of the first refrigeration branch 42 and the on-off of the second refrigeration branch 43 are relatively independently controlled. When the first refrigeration branch 42 and the second refrigeration branch 43 are both connected, it is possible to cool the vehicle insulation box 10 and the vehicle air conditioner simultaneously; when the first refrigeration branch 42 is disconnected and the second refrigeration branch 43 is connected, it is possible to cool the vehicle insulation box 10 independently; when the first refrigeration branch 42 is connected and the second refrigeration branch 43 is disconnected, it is possible to cool the vehicle air conditioner independently.

[0043] When both the vehicle-mounted thermal insulation box 10 and the vehicle-mounted air conditioner need to be cooled, the refrigeration system 100 cools, and the compressor 21 compresses the refrigerant. The refrigerant compressed by the compressor 21 is discharged through the exhaust port 211 and flows into the outdoor heat exchanger 22, so that the refrigerant flows through the outdoor heat exchanger 22 to exchange heat with the outdoor air, thereby dissipating heat. Through the first refrigeration branch 42 and the second refrigeration branch 43 are connected, the refrigerant flowing out of the outdoor heat exchanger 22 can be split and flow into the thermal insulation box evaporator 132 and the air conditioning box evaporator 24 at the same time, and heat is exchanged with the vehicle-mounted thermal insulation box 10 and the air inside the car, thereby achieving simultaneous cooling of the vehicle-mounted thermal insulation box 10 and the interior of the car. Then, the refrigerant will enter the compressor 21 through the return air port 212 of the compressor 21 and start the next circulation loop.

[0044] When the vehicle air conditioner is required to cool independently, the refrigeration system 100 cools the vehicle air conditioner. The compressor 21 compresses the refrigerant, which is then discharged through the exhaust port 211 and flows into the outdoor heat exchanger 22. The refrigerant flows through the outdoor heat exchanger 22 to exchange heat with the outdoor air, thereby dissipating the heat. By disconnecting the second refrigeration branch 43 and connecting the first refrigeration branch 42, the refrigerant flowing out of the outdoor heat exchanger 22 can flow independently into the air conditioner evaporator 24, achieving independent cooling of the vehicle air conditioner. The refrigerant then enters the compressor 21 through the return air port 212 of the compressor 21 and begins the next circulation loop.

[0045] When the vehicle-mounted thermal insulation box 10 needs to be cooled separately, the refrigeration system 100 cools, and the compressor 21 compresses the refrigerant. The refrigerant compressed by the compressor 21 is discharged through the exhaust port 211 and flows into the outdoor heat exchanger 22, so that the refrigerant flows through the outdoor heat exchanger 22 to exchange heat with the outdoor air, thereby dissipating the heat. By disconnecting the first refrigeration branch 42 and connecting the second refrigeration branch 43, the refrigerant flowing out of the outdoor heat exchanger 22 can flow into the thermal insulation box evaporator 132 separately, thereby achieving independent refrigeration of the vehicle-mounted thermal insulation box 10. Then, the refrigerant will enter the compressor 21 through the return air port 212 of the compressor 21 and start the next circulation loop. For example, the refrigeration temperature range of the refrigeration system 100 is 0℃~8℃, which can meet the basic refrigeration needs.

[0046] When both the vehicle-mounted thermal insulation box 10 and the vehicle-mounted air conditioner need to be heated, the refrigeration system 100 heats, and the compressor 21 compresses the refrigerant. The refrigerant compressed by the compressor 21 is discharged through the exhaust port 211. The first heating branch 52 and the second heating branch 53 are both connected, and the refrigerant discharged through the exhaust port 211 can be divided and flow into the air conditioning box condenser 23 and the thermal insulation box condenser 131 at the same time, dissipating heat in the air conditioning box condenser 23 and the thermal insulation box condenser 131, thereby achieving simultaneous heating of the vehicle-mounted thermal insulation box 10 and the interior of the vehicle. Then, the refrigerant exchanges heat with the outdoor air through the outdoor heat exchanger 22. The refrigerant after heat exchange will enter the compressor 21 through the return air port 212 of the compressor 21 and start the next circulation loop.

[0047] When the vehicle air conditioner is required to heat independently, refrigeration system 100 generates heat, and compressor 21 compresses the refrigerant. The compressed refrigerant is then discharged through exhaust port 211. By disconnecting the second heating branch 53 and connecting the first heating branch 52, the refrigerant compressed by compressor 21 can flow independently into the air conditioning unit condenser 23, achieving independent heating of the vehicle air conditioner. The refrigerant then exchanges heat with the outdoor air through outdoor heat exchanger 22. After heat exchange, the refrigerant enters compressor 21 through its return air port 212, and the next cycle begins.

[0048] When the vehicle-mounted insulated box 10 needs to be heated independently, by disconnecting the first heating branch 52 and connecting the second heating branch 53, the refrigerant compressed by the compressor 21 can flow into the insulated box condenser 131 independently, thereby independently heating the vehicle-mounted insulated box 10. The refrigerant then exchanges heat with the outdoor air through the outdoor heat exchanger 22. The refrigerant after heat exchange will enter the compressor 21 through the return air port 212 of the compressor 21 and begin the next circulation loop. For example, the heating temperature range of the refrigeration system 100 is 20℃ to 60℃, which can meet the basic heating needs.

[0049] According to the refrigeration system 100 of an embodiment of the present invention, the insulated box condenser 131 is connected in parallel with the air-conditioning box condenser 23 to form a heating flow path 51, so that both the vehicle-mounted insulated box 10 and the vehicle-mounted air conditioner can achieve heating, and the insulated box evaporator 132 is connected in parallel with the air-conditioning box evaporator 24 to form a cooling flow path 41, so that both the vehicle-mounted insulated box 10 and the vehicle-mounted air conditioner can achieve cooling. In addition, the refrigeration circuit 40 and the heating circuit 50 share the compressor 21, the outdoor heat exchanger 22 and the control component, so that the refrigeration system 100 has a simple structure and low cost.

[0050] Reference Figure 1-Figure 5According to some embodiments of the present invention, the control assembly includes: a first control valve group and a second control valve group. The first control valve group includes a first control valve 311 and a second control valve 312. The first control valve 311 is connected between the exhaust port 211 and one end of the heating flow path 51, and the first control valve 311 can control the flow path between the exhaust port 211 and one end of the heating flow path 51. The second control valve 312 is connected between the outdoor heat exchanger 22 and the return air port 212, and the second control valve 312 can control the flow path between the outdoor heat exchanger 22 and the return air port 212. For example, the first control valve 311 and the second control valve 312 are both solenoid valves. The second control valve group includes a third control valve 321 and a fourth control valve 322. The third control valve 321 is connected between the exhaust port 211 and the outdoor heat exchanger 22 and can control the flow path between the exhaust port 211 and the outdoor heat exchanger 22. The fourth control valve 322 is connected between the outdoor heat exchanger 22 and the other end of the cooling flow path 41 and can control the flow path between the outdoor heat exchanger 22 and the other end of the cooling flow path 41. For example, the first control valve 311 and the second control valve 312 are both solenoid valves.

[0051] When the compressor 21 is operating, the heating circuit 50 can be activated by opening the first control valve group and closing the second control valve group, thereby heating the vehicle air conditioner and vehicle thermal insulation box 10. By closing the first control valve group and opening the second control valve group, the cooling circuit 40 can be activated, thereby cooling the vehicle air conditioner and vehicle thermal insulation box 10. The first and second control valve groups facilitate switching of the refrigeration system 100 between the heating circuit 50 and the cooling circuit 40, thereby controlling the temperature of the vehicle air conditioner and vehicle thermal insulation box 10.

[0052] Reference Figure 3-Figure 5According to some optional embodiments of the present invention, the heating circuit 51 includes a first heating branch 52 and a second heating branch 53 connected in parallel. The air conditioning unit condenser 23 is connected in series to the first heating branch 52, and the thermal insulation unit condenser 131 is connected in series to the second heating branch 53. The cooling circuit 41 includes a first cooling branch 42 and a second cooling branch 43 connected in parallel. The air conditioning unit evaporator 24 is connected in series to the first cooling branch 42, and the thermal insulation unit evaporator 132 is connected in series to the second cooling branch 43. The exhaust port 211 is connected to one end of the heating circuit 51 via a first connecting pipe 371. The other end of the heating circuit 51 is connected to the outdoor heat exchanger 22 via a second connecting pipe 372. The outdoor heat exchanger 22 is connected to the return air port 212 via a third connecting pipe 373. The arrangement of the first connecting pipe 371, the second connecting pipe 372, and the third connecting pipe 373 ensures smooth operation of the heating circuit 50. When heating is in progress, the refrigerant compressed in the compressor 21 is discharged from the exhaust port 211 and flows into the heating flow path 51 through the first connecting pipe 371. The refrigerant flowing out of the heating flow path 51 flows into the outdoor heat exchanger 22 through the second connecting pipe 372 for heat exchange. The refrigerant after heat exchange flows into the compressor 21 through the third connecting pipe 373 and the return air port 212 in turn.

[0053] Continue to refer to Figure 3-Figure 5 The exhaust port 211 is connected to the outdoor heat exchanger 22 via a fourth connecting pipe 374. The outdoor heat exchanger 22 is connected to the first heating branch 52 via a fifth connecting pipe 375. The connection point between the fifth connecting pipe 375 and the first heating branch 52 is a first connection point 331, which is located on the side of the air conditioning unit condenser 23 away from the exhaust port 211. The other end of the cooling circuit 41 is connected to the second heating branch 53 via a sixth connecting pipe 376. The connection point between the sixth connecting pipe 376 and the second heating branch 53 is a second connection point 332, which is located on the side of the insulation box condenser 131 away from the exhaust port 211. One end of the cooling circuit 41 is connected to the return air port 212 via a seventh connecting pipe 377. The arrangement of the fourth connecting pipe 374, the fifth connecting pipe 375, the sixth connecting pipe 376, and the seventh connecting pipe 377 ensures smooth flow in the refrigeration circuit 40. When cooling is performed, the refrigerant compressed in the compressor 21 is discharged from the exhaust port 211 and flows into the outdoor heat exchanger 22 through the fourth connecting pipe 374 for heat exchange. The refrigerant after heat exchange passes through the fifth connecting pipe 375, the first connecting point 331, the second connecting point 332 and the sixth connecting pipe 376 in sequence and flows into the refrigeration flow path 41. The refrigerant flowing out of the refrigeration flow path 41 passes through the seventh connecting pipe 377 and the return air port 212 in sequence and flows into the compressor 21.

[0054] The first control valve 311 is connected in series to the first connecting line 371 and can be used to control the on / off state of the first connecting line 371. Alternatively, both the first heating branch 52 and the second heating branch 53 are connected in series with the first control valve 311. The first control valve 311 on the first heating branch 52 can be used to control the on / off state of the first heating branch 52, and the first control valve 311 on the second heating branch 53 can be used to control the on / off state of the second heating branch 53, thereby facilitating independent heating of the vehicle air conditioner and the vehicle insulated box 10. The second control valve 312 is connected in series to the third connecting line 373, the third control valve 321 is connected in series to the fourth connecting line 374, and the fourth control valve 322 is connected in series to the sixth connecting line 376. The fifth connecting line 375 is connected in series with the fifth control valve 341, which is used to control the on / off state of the fifth connecting line 375. For example, when the refrigeration system 100 is working in the heating circuit 50, the third control valve 321, the fourth control valve 322 and the fifth control valve 341 are disconnected, and the fourth connecting pipe 374, the fifth connecting pipe 375 and the sixth connecting pipe 376 are all disconnected, so that the first refrigeration branch 42 and the second refrigeration branch 43 are disconnected; when the refrigeration system 100 is working in the refrigeration circuit 40, the first control valve 311 and the second control valve 312 are disconnected, and the first connecting pipe 371, the first heating branch 52 and the second heating branch 53 are all disconnected.

[0055] For example, refer to Figure 1 and Figure 4 , the first control valve 311 is connected in series to the first connecting pipe 371. When the refrigeration system 100 is heating, the first control valve 311 is connected, and the refrigerant compressed by the compressor 21 is discharged through the exhaust port 211. After passing through the first connecting pipe 371, it can be divided and flow into the air conditioning box condenser 23 and the insulation box condenser 131, and heat is dissipated in the air conditioning box condenser 23 and the insulation box condenser 131, thereby achieving simultaneous heating of the vehicle insulation box 10 and the vehicle interior. Figure 2 and Figure 5 The first heating branch 52 and the second heating branch 53 are both connected in series with a first control valve 311. When the refrigeration system 100 is heating, the refrigerant compressed by the compressor 21 is discharged through the exhaust port 211 and then enters the first heating branch 52 and the second heating branch 53 after passing through the first connecting pipe 371. When the first control valve 311 of the first heating branch 52 is connected and the first control valve 311 of the second heating branch 53 is disconnected, the second heating branch 53 is disconnected, and the refrigerant compressed by the compressor 21 can flow solely into the air conditioning condenser 23, achieving independent heating of the air conditioner. When the first control valve 311 of the second heating branch 53 is connected and the first control valve 311 of the first heating branch 52 is disconnected, the refrigerant compressed by the compressor 21 can flow solely into the insulated box condenser 131, achieving independent heating of the vehicle insulated box 10.

[0056] Reference Figure 1-Figure 3 In some optional embodiments of the present invention, the fifth control valve 341 is a one-way valve, and the fifth control valve 341 is unidirectional in the direction from the outdoor heat exchanger 22 to the first heating branch 52, preventing the refrigerant flowing out of the fifth connecting pipe 375 from flowing back to the outdoor heat exchanger 22.

[0057] Reference Figure 4 and Figure 5 In some optional embodiments of the present invention, the first heating branch 52 is further connected in series with a sixth control valve 342. The sixth control valve 342 is a one-way valve. The sixth control valve 342 is located between the first connection point 331 and the air conditioning box condenser 23. The sixth control valve 342 is one-way in the direction from the air conditioning box condenser 23 to the first connection point 331, which can prevent the refrigerant flowing out of the indoor condenser in the first heating branch 52 from flowing in the reverse direction. Figure 3 The first refrigeration branch 42 is also connected in series with a seventh control valve 343, which is a one-way valve. The seventh control valve 343 is located on the side of the air-conditioning box evaporator 24 adjacent to the return air port 212, and the seventh control valve 343 is unidirectionally conductive in the direction from the air-conditioning box evaporator 24 to the return air port 212, which can prevent the refrigerant flowing out of the air-conditioning box evaporator 24 in the first refrigeration branch 42 from flowing in reverse.

[0058] Reference Figure 1-Figure 5 In some optional embodiments of the present invention, the first heating branch 52 is further connected in series with a filter-drier 35. The filter-drier 35 can be used to store and supply refrigerant in the refrigeration system 100. The filter-drier 35 filters impurities from the refrigerant, ensuring smooth refrigerant circulation. The filter-drier 35 also absorbs moisture from the refrigerant, preventing it from freezing and blocking the flow path, thereby ensuring smooth refrigerant circulation. The filter-drier 35 is located on the side of the first connection point 331 away from the A / C condenser 23. In the refrigeration circuit 40, refrigerant flowing from the fifth connecting line 375 can flow into the filter-drier 35. In the heating circuit 50, refrigerant flowing from the A / C condenser 23 can flow into the filter-drier 35 after passing through the sixth control valve 342.

[0059] Reference Figure 1 and Figure 2The second connecting pipe 372 is connected in series with the first throttle component 361, which is located between the other end of the heating flow path 51 and the outdoor heat exchanger 22. The first throttle component 361 can throttle and reduce the pressure of the refrigerant flowing out of the indoor condenser and the insulated box condenser 131. The first cooling branch 42 is connected in series with the second throttle component 362, which is located between the other end of the cooling flow path 41 and the air conditioning box evaporator 24. The second throttle component 362 can throttle and reduce the pressure of the refrigerant flowing out of the outdoor heat exchanger 22. The second cooling branch 43 is connected in series with the third throttle component 363, which is located between the other end of the cooling flow path 41 and the insulated box evaporator 132. The second throttle component 362 can throttle and reduce the pressure of the refrigerant flowing out of the outdoor heat exchanger 22.

[0060] According to some optional embodiments of the present invention, the first throttle component 361, the second throttle component 362, and the third throttle component 363 are all throttle valves. For example, the first throttle component 361 may be an electronic expansion valve. The first throttle component 361, the second throttle component 362, and the third throttle component 363 not only throttle and reduce pressure, but also control the on / off state of the corresponding pipelines. By opening and closing the second throttle component 362 and the third throttle component 363, the on / off state of the first refrigeration branch 42 and the second refrigeration branch 43 can be independently controlled.

[0061] For example, when the refrigeration system 100 is operating in the refrigeration circuit 40, the air conditioning evaporator 24 can be cooled by opening the second throttle component 362 alone, and the thermal insulation box evaporator 132 can be cooled by opening the third throttle component 363 alone. When both the second throttle component 362 and the third throttle component 363 are opened, the air conditioning evaporator 24 and the thermal insulation box evaporator 132 can be cooled simultaneously, thereby cooling the vehicle interior and the vehicle thermal insulation box 10. Optionally, the first control valve 311, the second control valve 312, the third control valve 321, and the fourth control valve 322 are all solenoid valves.

[0062] For example, refer to Figure 1-Figure 3According to some specific embodiments of the present invention, the second refrigeration branch 43 is further connected in series with a first sensor 381. The first sensor 381 can be a temperature and pressure sensor. The first sensor 381 can be located between one end of the refrigeration circuit 40 and the insulated box evaporator 132. The first sensor 381 can be electrically connected to the control device of the refrigeration system 100. The first sensor 381 can transmit information about the temperature and pressure at the outlet of the insulated box evaporator 132, so that the control device can adjust the opening of the third throttle component 363 based on this information. The refrigeration circuit 40 also includes a second sensor 382. The second sensor 382 can also be a temperature and pressure sensor. The second sensor 382 can be located between one end of the refrigeration circuit 40 and the return air inlet 212 of the compressor 21. The second sensor 382 can also be electrically connected to the control device of the refrigeration system 100. The second sensor 382 can transmit information about the temperature and pressure at the return air inlet 212 of the compressor 21, so that the control device can adjust the speed of the compressor 21 based on this information.

[0063] Reference Figure 6 According to some embodiments of the present invention, the vehicle-mounted thermal insulation box 10 includes: a box body 11 and a sealed shell 12. The box body 11 includes a box main body 110 and a box cover 112. The box main body 110 defines a accommodating cavity 111. For example, the accommodating cavity 111 can be used to accommodate food and beverages. The box cover 112 is provided on the box main body 110 for opening and closing the accommodating cavity 111. The sealed shell 12 is provided at the bottom of the box body 11, and an installation cavity 13 is defined between the sealed shell 12 and the box body 11. The installation cavity 13 is located on the lower side of the accommodating cavity 111. The insulation box condenser 131 and the insulation box evaporator 132 are both arranged in the installation cavity 13, making the overall structure compact and saving space. The installation cavity 13 and the accommodating cavity 111 are connected through a ventilation structure. When the refrigeration system 100 is cooling, the coldness of the installation cavity 13 can be transferred to the accommodating cavity 111 through the ventilation structure. When the refrigeration system 100 is heating, the heat of the installation cavity 13 can be transferred to the accommodating cavity 111 through the ventilation structure. The accommodating cavity 111 is closed by the box cover 112 arranged on the box body 110, thereby achieving insulation of food and beverages in the accommodating cavity 111.

[0064] Reference Figure 6 According to some optional embodiments of the present invention, the installation cavity 13 is further provided with an air supply fan 133, which is used to blow the airflow in the installation cavity 13 into the accommodating cavity 111. The airflow in the installation cavity 13 can enter the accommodating cavity 111 through the ventilation structure and transfer the cold or heat in the installation cavity 13 to the accommodating cavity 111.

[0065] Refer to the following Figure 1-Figure 5 A refrigeration system 100 for a vehicle according to some embodiments of the present invention is described.

[0066] Example 1:

[0067] Specifically, refer to Figure 1 、 Figure 3 and Figure 4 The first heating branch 52 and the second heating branch 53 are connected in parallel, with the air conditioning unit condenser 23 connected in series to the first heating branch 52, and the thermal insulation unit condenser 131 connected in series to the second heating branch 53. The first cooling branch 42 and the second cooling branch 43 are connected in parallel, with the air conditioning unit evaporator 24 connected in series to the first cooling branch 42, and the thermal insulation unit evaporator 132 connected in series to the second cooling branch 43. The first control valve 311 is connected in series to the first connecting pipe 371, the first cooling branch 42 is connected in series to the second throttle component 362, and the second cooling branch 43 is connected in series to the third throttle component 363. Both the second throttle component 362 and the third throttle component 363 are throttle valves, and both the second throttle component 362 and the third throttle component 363 are in a connected state.

[0068] When the refrigeration system 100 is cooling, the refrigerant compressed by the compressor 21 is discharged through the exhaust port 211 and flows into the outdoor heat exchanger 22, so that the refrigerant flows through the outdoor heat exchanger 22 to exchange heat with the outdoor air, thereby dissipating heat; the refrigerant flowing out of the outdoor heat exchanger 22 can be split and flow into the insulated box evaporator 132 and the air conditioning box evaporator 24 at the same time, thereby achieving simultaneous cooling of the vehicle insulated box 10 and the vehicle air conditioner. When the refrigeration system 100 is heating, the first control valve 311 is in a connected state, and the refrigerant compressed by the compressor 21 is discharged through the exhaust port 211. It can be split and flow into the air conditioning box condenser 23 and the insulated box condenser 131 at the same time, dissipating heat in the air conditioning box condenser 23 and the insulated box condenser 131, thereby achieving simultaneous heating of the vehicle insulated box 10 and the vehicle air conditioner. In this way, the refrigeration system 100 can achieve simultaneous cooling or heating of the vehicle air conditioner and the vehicle insulated box 10.

[0069] Example 2:

[0070] Continue to refer to Figure 1 、 Figure 3 and Figure 4 The structure of this embodiment is substantially the same as that of the first embodiment, wherein the same components are designated by the same reference numerals, and the only difference is that one of the second throttle component 362 and the third throttle component 363 is connected, and the other is disconnected.

[0071] When refrigeration system 100 is cooling, and second throttle component 362 is connected, the refrigerant after heat exchange in outdoor heat exchanger 22 can flow solely into AC evaporator 24, achieving independent cooling of the vehicle air conditioner. When third throttle component 363 is connected, the refrigerant after heat exchange in outdoor heat exchanger 22 can flow solely into AC evaporator 24, achieving independent cooling of vehicle insulated box 10. When refrigeration system 100 is heating, the refrigerant compressed by compressor 21 is discharged through exhaust port 211 and can be split and simultaneously flow into AC condenser 23 and insulated box condenser 131, dissipating heat in these condensers and achieving simultaneous heating of vehicle insulated box 10 and vehicle air conditioner. Thus, refrigeration system 100 can achieve independent cooling or simultaneous heating of the vehicle air conditioner and insulated box 10.

[0072] Example 3,

[0073] Reference Figure 2 、 Figure 3 and Figure 5 The structure of this embodiment is substantially the same as that of the first embodiment, wherein the same reference numerals are used for the same components, and the only difference is that: the first heating branch 52 and the second heating branch 53 are both connected in series with the first control valve 311, the first connecting pipe 371 is not connected in series with the first control valve 311, and the first heating branch 52 and the second heating branch 53 are both connected in series with the first control valve 311, one of the first control valves 311 is connected and the other is disconnected.

[0074] When the refrigeration system 100 is cooling, the refrigerant compressed by the compressor 21 is discharged through the exhaust port 211 and flows into the outdoor heat exchanger 22, so that the refrigerant flows through the outdoor heat exchanger 22 to exchange heat with the outdoor air, thereby dissipating the heat; the refrigerant flowing out of the outdoor heat exchanger 22 can be diverted and flow into the insulation box evaporator 132 and the air-conditioning box evaporator 24 at the same time, realizing simultaneous cooling of the vehicle insulation box 10 and the vehicle air conditioner. When the first control valve of the first heating branch 52 is connected, during heating mode, the refrigerant discharged through the exhaust port 211 of the compressor 21 can flow solely into the air conditioning unit condenser 23, where it dissipates heat, thus enabling independent heating of the vehicle air conditioner. When the first control valve of the second heating branch 53 is connected, during heating mode, the refrigerant discharged through the exhaust port 211 of the compressor 21 can flow solely into the thermal insulation box condenser 131, where it dissipates heat, thus enabling independent heating of the vehicle thermal insulation box 10. Thus, the refrigeration system 100 can achieve simultaneous cooling of the vehicle air conditioner and the vehicle thermal insulation box 10, or independent heating of the vehicle thermal insulation box 10.

[0075] Example 4:

[0076] Continue to refer to Figure 2 、 Figure 3 and Figure 5The structure of this embodiment is substantially the same as that of the third embodiment, wherein the same components are designated by the same reference numerals, and the only difference is that one of the second throttle component 362 and the third throttle component 363 is connected, and the other is disconnected.

[0077] When the refrigeration system 100 is cooling, and the second throttle component 362 is connected, the refrigerant after heat exchange in the outdoor heat exchanger 22 can flow solely into the A / C evaporator 24, achieving independent cooling of the vehicle air conditioner. When the third throttle component 363 is connected, the refrigerant after heat exchange in the outdoor heat exchanger 22 can flow solely into the A / C evaporator 24, achieving independent cooling of the vehicle insulated box 10. When the refrigeration system 100 is heating, and the first control valve of the first heating branch 52 is connected, the refrigerant discharged through the exhaust port 211 of the compressor 21 can flow solely into the A / C condenser 23, dissipating heat therein, achieving independent heating of the vehicle air conditioner. When the first control valve of the second heating branch 53 is connected, when the refrigeration system 100 is heating, the refrigerant discharged through the exhaust port 211 of the compressor 21 can flow solely into the insulated box condenser 131, dissipating heat therein, achieving independent heating of the vehicle insulated box 10. Thus, the refrigeration system 100 can realize independent cooling or independent heating of the vehicle air conditioner and the vehicle thermal insulation box 10 .

[0078] A vehicle according to a second embodiment of the present invention includes the refrigeration system 100 according to the first embodiment of the present invention. The vehicle also includes an auxiliary electric heating element 60 and an outdoor fan 25. The auxiliary electric heating element 60 can provide auxiliary heating to the passenger compartment of the vehicle, thereby increasing the temperature of the passenger compartment; the outdoor fan 25 can dissipate heat from the outdoor heat exchanger 22.

[0079] According to the vehicle of an embodiment of the present invention, by arranging the above-mentioned refrigeration system 100 in the vehicle, the insulated box condenser 131 is connected in parallel with the air-conditioning box condenser 23 to form a heating flow path 51, so that both the vehicle-mounted insulated box 10 and the vehicle-mounted air conditioner can achieve heating, and the insulated box evaporator 132 is connected in parallel with the air-conditioning box evaporator 24 to form a cooling flow path 41, so that both the vehicle-mounted insulated box 10 and the vehicle-mounted air conditioner can achieve cooling. In addition, the refrigeration circuit 40 and the heating circuit 50 share the compressor 21, the outdoor heat exchanger 22 and the control component, so that the refrigeration system 100 has a simple structure and low cost.

[0080] According to some embodiments of the present invention, the vehicle-mounted thermal insulation box 10 is disposed in the front cabin of the vehicle, which can reduce the space occupied by the vehicle-mounted thermal insulation box 10. For example, the vehicle-mounted thermal insulation box 10 can be disposed above the drive motor in the front cabin of the car.

[0081] In the description of the present invention, “on”, “above” and “above” a first feature of a second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0082] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0083] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A vehicle refrigeration system, characterized in that: include: A vehicle air conditioner, comprising a compressor, an outdoor heat exchanger, an air conditioning box condenser, and an air conditioning box evaporator; A vehicle-mounted thermal insulation box, comprising a thermal insulation box condenser and a thermal insulation box evaporator; wherein the insulated box condenser is connected in parallel with the air-conditioning box condenser to form a heating flow path, the insulated box evaporator is connected in parallel with the air-conditioning box evaporator to form a cooling flow path, one end of the heating flow path is connected to the exhaust port of the compressor, one end of the cooling flow path is connected to the return air port of the compressor, the outdoor heat exchanger is connected between the other end of the heating flow path and the return air port of the compressor, and the outdoor heat exchanger is connected between the other end of the cooling flow path and the exhaust port of the compressor, the compressor, the heating flow path and the outdoor heat exchanger are connected in sequence to form a heating circuit, and the compressor, the outdoor heat exchanger and the cooling flow path are connected in sequence to form a cooling circuit; a control component, the control component being used to control the refrigeration system to switch between the heating circuit and the refrigeration circuit; The control component includes: a first control valve group, the first control valve group including a first control valve and a second control valve, the first control valve being connected to the exhaust port and one end of the heating flow path to control the flow path between the exhaust port and one end of the heating flow path, and the second control valve being connected between the outdoor heat exchanger and the return air port to control the flow path between the outdoor heat exchanger and the return air port; a second control valve group, the second control valve group including a third control valve and a fourth control valve, the third control valve being connected between the exhaust port and the outdoor heat exchanger to control the on-off of the flow path between the exhaust port and the outdoor heat exchanger, and the fourth control valve being connected between the outdoor heat exchanger and the other end of the refrigeration flow path to control the on-off of the flow path between the outdoor heat exchanger and the other end of the refrigeration flow path; The heating circuit includes a first heating branch and a second heating branch connected in parallel, the air conditioning box condenser is connected in series to the first heating branch, and the thermal insulation box condenser is connected in series to the second heating branch; the cooling circuit includes a first cooling branch and a second cooling branch connected in parallel, the air conditioning box evaporator is connected in series to the first cooling branch, and the thermal insulation box evaporator is connected in series to the second cooling branch; The exhaust port is connected to one end of the heating flow path via a first connecting pipe, the other end of the heating flow path is connected to the outdoor heat exchanger via a second connecting pipe, and the outdoor heat exchanger is connected to the return air port via a third connecting pipe; The exhaust port is connected to the outdoor heat exchanger via a fourth connecting pipe, the outdoor heat exchanger is connected to the first heating branch via a fifth connecting pipe, the connection point between the fifth connecting pipe and the first heating branch is a first connecting point, the first connecting point is located on a side of the air-conditioning box condenser away from the exhaust port, the other end of the refrigeration flow path is connected to the second heating branch via a sixth connecting pipe, the connection point between the sixth connecting pipe and the second heating branch is a second connecting point, the second connecting point is located on a side of the insulation box condenser away from the exhaust port, and one end of the refrigeration flow path is connected to the return air port via a seventh connecting pipe; Among them, the first control valve is connected in series with the first connecting pipeline or the first heating branch and the second heating branch are both connected in series with the first control valve, the second control valve is connected in series with the third connecting pipeline, the third control valve is connected in series with the fourth connecting pipeline, the fourth control valve is connected in series with the sixth connecting pipeline, and the fifth connecting pipeline is connected in series with the fifth control valve, and the fifth control valve is used to control the on and off of the fifth connecting pipeline.

2. The vehicle refrigeration system according to claim 1, characterized in that: The heating flow path includes a first heating branch and a second heating branch connected in parallel, the air conditioning box condenser is connected in series to the first heating branch, and the insulation box condenser is connected in series to the second heating branch, and the on-off of the first heating branch and the on-off of the second heating branch are relatively independently controlled; And / or, the refrigeration circuit includes a first refrigeration branch and a second refrigeration branch connected in parallel, the air-conditioning box evaporator is connected in series to the first refrigeration branch, and the insulation box evaporator is connected in series to the second refrigeration branch, and the on-off of the first refrigeration branch and the on-off of the second refrigeration branch are relatively independently controlled.

3. The vehicle refrigeration system according to claim 1, characterized in that: The fifth control valve is a one-way valve, and the fifth control valve is unidirectionally conductive in a direction from the outdoor heat exchanger to the first heating branch.

4. The vehicle refrigeration system according to claim 1, characterized in that: The first heating branch is also connected in series with a sixth control valve, which is a one-way valve. The sixth control valve is located between the first connection point and the air-conditioning box condenser, and the sixth control valve is unidirectionally conductive in the direction from the air-conditioning box condenser to the first connection point; the first cooling branch is also connected in series with a seventh control valve, which is a one-way valve. The seventh control valve is located on the side of the air-conditioning box evaporator adjacent to the return air port, and the seventh control valve is unidirectionally conductive in the direction from the air-conditioning box evaporator to the return air port.

5. The vehicle refrigeration system according to claim 1, characterized in that: The first heating branch is also connected in series with a filter dryer, which is located on the side of the first connection point away from the air-conditioning box condenser; and / or the second connecting pipe is connected in series with a first throttling component, the first refrigeration branch is connected in series with a second throttling component, and the second refrigeration branch is connected in series with a third throttling component.

6. The vehicle refrigeration system according to claim 5, characterized in that: The first throttle component, the second throttle component and the third throttle component are all throttle valves.

7. The vehicle refrigeration system according to any one of claims 1 to 6, characterized in that: The vehicle-mounted thermal insulation box comprises: A box body, the box body comprising a box body and a box cover, the box body defining a receiving cavity, the box cover being arranged on the box body for opening and closing the receiving cavity; A sealed shell is provided at the bottom of the box body and defines an installation cavity between the sealed shell and the box body. The insulated box condenser and the insulated box evaporator are both provided in the installation cavity. The installation cavity is connected to the accommodating cavity through a ventilation structure.

8. The vehicle cooling system according to claim 7, characterized in that: The installation cavity is further provided with an air supply fan, and the air supply fan is used to blow the air flow in the installation cavity into the accommodating cavity.

9. A vehicle, characterized in that: include: A refrigeration system according to any one of claims 1 to 8.

10. The vehicle according to claim 9, characterized in that The vehicle-mounted thermal insulation box is arranged in the front cabin of the vehicle.

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