Refrigeration device of vehicle and vehicle

Abstract

The utility model provides a refrigeration device of a vehicle and the vehicle. The refrigerating device comprises a compressor, a condenser, an expansion valve, an evaporator, a first heat exchanger, a second heat exchanger and a third heat exchanger. The compressor, the condenser, the expansion valve and the evaporator form a first refrigerant loop to refrigerate the cargo compartment. The compressor, the condenser, the expansion valve and the first passage of the first heat exchanger form a second refrigerant loop. The second channel of the first heat exchanger and the second heat exchanger form a first cooling liquid loop, cooling liquid flowing through the second channel exchanges heat with refrigerant flowing through the first channel, and the cooling liquid flows through the second heat exchanger to refrigerate a passenger compartment. The second passage of the first heat exchanger and the third heat exchanger form a second cooling liquid loop, cooling liquid flowing through the second passage exchanges heat with refrigerant flowing through the first passage, and the cooling liquid flows through the third heat exchanger to cool the battery pack. Refrigeration of the cargo compartment, the passenger compartment and the battery pack is achieved through one compressor and one condenser, and cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle refrigeration technology, in particular to a refrigeration device of a vehicle and the vehicle. BACKGROUND

[0002] With the increasing improvement of people's living standards, the demand for freight transportation is also gradually increasing, and various refrigerated trucks for transporting low-temperature or constant-temperature goods have appeared on the market. The refrigerated trucks include fresh food refrigerated trucks, frozen food refrigerated trucks, medicine refrigerated trucks, biological product refrigerated trucks, and chemical refrigerated trucks. The existing refrigerated trucks mostly use two sets of air conditioning systems for refrigeration of the passenger compartment and the cargo compartment, which has a high overall cost. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a refrigeration device of a vehicle with low cost.

[0004] The present application provides a refrigeration device of a vehicle, which comprises a compressor, a condenser, an expansion valve, an evaporator, a first heat exchanger, a second heat exchanger, and a third heat exchanger. The compressor, the condenser, the expansion valve, and the evaporator form a first refrigerant circuit to refrigerate the cargo compartment of the vehicle. The compressor, the condenser, the expansion valve, and a first passage of the first heat exchanger form a second refrigerant circuit. A second passage of the first heat exchanger and the second heat exchanger form a first cooling liquid circuit, and the cooling liquid flowing through the second passage exchanges heat with the refrigerant flowing through the first passage. The cooling liquid after heat exchange flows through the second heat exchanger to refrigerate the passenger compartment of the vehicle. The second passage of the first heat exchanger and the third heat exchanger form a second cooling liquid circuit, and the cooling liquid flowing through the second passage exchanges heat with the refrigerant flowing through the first passage. The cooling liquid after heat exchange flows through the third heat exchanger to cool the battery pack of the vehicle.

[0005] In some embodiments, the refrigeration device of the vehicle of the present application can refrigerate the cargo compartment, the passenger compartment, and the battery pack by using one compressor and one condenser, thereby reducing one compressor and one condenser and lowering the cost.

[0006] Further, the first heat exchanger is a plate heat exchanger.

[0007] Further, the refrigeration device comprises a valve to control the opening and closing of the first cooling liquid circuit and the second cooling liquid circuit.

[0008] In some embodiments, the refrigeration device of the vehicle of the present application can selectively refrigerate the passenger compartment and the battery pack or adjust the amount of cooling liquid to save energy.

[0009] Further, the valve comprises at least a valve inlet, a first valve outlet and a second valve outlet, the valve inlet is in communication with the first heat exchanger, the first valve outlet is in communication with the third heat exchanger, and the second valve outlet is in communication with the second heat exchanger.

[0010] Further, the second heat exchanger comprises a first pipeline through which the cooling liquid flows to cool the passenger cabin of the vehicle.

[0011] In some embodiments, the refrigeration device of the vehicle of the present application has a simple structure and low cost.

[0012] Further, the third heat exchanger comprises a second pipeline through which the cooling liquid flows to cool the battery pack of the vehicle.

[0013] In some embodiments, the refrigeration device of the vehicle of the present application has a simple structure and low cost.

[0014] Further, the refrigeration device comprises a pump, a pump inlet of the pump is in communication with the first pipeline and the second pipeline, and a pump outlet of the pump is in communication with the first heat exchanger.

[0015] Further, the refrigeration device comprises a first fan arranged at the condenser; and / or,

[0016] a second fan arranged at the evaporator.

[0017] Further, the expansion valve comprises a first expansion valve and a second expansion valve, the first expansion valve is in communication with the condenser and the evaporator, and the second expansion valve is in communication with the condenser and the first heat exchanger.

[0018] In some embodiments, the refrigeration device of the vehicle of the present application can independently control the refrigeration of the cargo compartment, the passenger cabin and the battery pack, so as to save energy.

[0019] The present application provides a vehicle comprising a passenger cabin, a cargo compartment, a battery pack and a refrigeration device of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a layout schematic diagram of the refrigeration device of the vehicle of the present application, the solid line in the figure is the flow path of the refrigerant, and the dashed line is the flow path of the cooling liquid.

[0021] Figure 2 is Figure 1 is a schematic diagram of the valve of the refrigeration device.

[0022] Figure 3 is Figure 1 is a layout schematic diagram of the refrigeration device when refrigerating the cargo compartment.

[0023] Figure 4 is Figure 1 A layout schematic diagram of the refrigeration device when refrigerating the passenger compartment is shown.

[0024] Figure 5 is Figure 1 A layout schematic diagram of the refrigeration device when refrigerating the battery pack is shown.

[0025] Figure 6 is Figure 1 A layout schematic diagram of the refrigeration device when refrigerating the cargo compartment and the battery pack is shown.

[0026] Figure 7 is Figure 1 A layout schematic diagram of the refrigeration device when refrigerating the cargo compartment and the passenger compartment is shown.

[0027] Figure 8 is Figure 1 A layout schematic diagram of the refrigeration device when refrigerating the battery pack and the passenger compartment is shown.

[0028] BRIEF DESCRIPTION OF DRAWINGS 100, refrigeration device; 1, compressor; 2, condenser; 3, expansion valve; 31, first expansion valve; 32, second expansion valve; 4, evaporator; 51, first heat exchanger; 52, second heat exchanger; 53, third heat exchanger; 6, pump; 61, pump inlet; 62, pump outlet; 71, first fan; 72, second fan; 8, valve; 81, valve inlet; 82, first valve outlet; 83, second valve outlet. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments (or, “modes”) of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.

[0030] If the application embodiments involve directional indications or positional relationships (such as up, down, left, right, front, back, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components in a certain posture (as shown in the drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms “first”, “second”, etc. in the application embodiments are only used for convenience of description, and cannot be understood as indicating or implying relative importance.

[0031] Referring to Figure 1 and Figures 4 to 5The embodiments of the present application provide a refrigeration device 100 of a vehicle for refrigerating the vehicle. The embodiments of the present application also provide a vehicle comprising a passenger cabin (not shown), a cargo compartment (not shown), a battery pack (not shown) and the refrigeration device 100.

[0032] The refrigeration device 100 comprises a compressor 1, a condenser 2, an expansion valve 3, an evaporator 4, a first heat exchanger 51, a second heat exchanger 52 and a third heat exchanger 53.

[0033] The compressor 1 compresses the refrigerant in the refrigerant circuit by using electric energy to realize the compression and circulation functions. The high-temperature and high-pressure refrigerant compressed by the compressor 1 is cooled in the condenser 2. The expansion valve 3 throttles and depressurizes the refrigerant cooled by the condenser 2 to reduce the evaporation pressure and temperature of the refrigerant entering the evaporator 4 and the first heat exchanger 51, and adjusts the flow of the refrigerant entering the evaporator 4 and the first heat exchanger 51. The refrigerant throttled and depressurized in the expansion valve 3 evaporates in the evaporator 4 to absorb heat. The refrigerant throttled and depressurized in the expansion valve 3 evaporates in the first heat exchanger 51 to absorb heat.

[0034] The compressor 1, the condenser 2, the expansion valve 3 and the evaporator 4 form a first refrigerant circuit to refrigerate the cargo compartment of the vehicle.

[0035] The compressor 1, the condenser 2, the expansion valve 3 and the first passage of the first heat exchanger 51 form a second refrigerant circuit.

[0036] The first heat exchanger 51 comprises a first passage (not shown) and a second passage (not shown). The first passage communicates the expansion valve 3 and the compressor to allow the refrigerant to flow through. The second passage communicates the second heat exchanger 52 and the third heat exchanger 53 to allow the cooling liquid to flow through. The cooling liquid flowing through the second passage exchanges heat with the refrigerant flowing through the first passage.

[0037] The second passage and the second heat exchanger 52 form a first cooling liquid circuit L1. The cooling liquid flowing through the second passage exchanges heat with the refrigerant flowing through the first passage. The cooled cooling liquid flows through the second heat exchanger 52 to refrigerate the passenger cabin of the vehicle.

[0038] The second passage and the third heat exchanger 53 form a second cooling liquid circuit L2. The cooling liquid flowing through the second passage exchanges heat with the refrigerant flowing through the first passage. The cooled cooling liquid flows through the third heat exchanger 53 to cool the battery pack of the vehicle.

[0039] The refrigeration device 100 of the vehicle of the embodiment of the present application can supply refrigeration for the cargo compartment, the passenger compartment and the battery pack by one compressor 1 and one condenser 2, and the number of compressors and condensers is reduced, thereby reducing the cost.

[0040] In some embodiments, the first heat exchanger 51 is a plate heat exchanger, and the type of the first heat exchanger 51 is not limited in the present application.

[0041] In some embodiments, the second heat exchanger 52 comprises a first pipeline (not shown) through which the cooling liquid flows to exchange heat with the passenger compartment of the vehicle to refrigerate the passenger compartment of the vehicle.

[0042] In some embodiments, the third heat exchanger 53 comprises a second pipeline (not shown) through which the cooling liquid flows to exchange heat with the battery pack of the vehicle to cool the battery pack of the vehicle.

[0043] In some embodiments, the refrigeration device 100 comprises a pump 6, a pump inlet 61 of the pump 6 being in communication with the first pipeline and the second pipeline, and a pump outlet 62 of the pump 6 being in communication with the first heat exchanger 51. The pump 6 drives the cooling liquid in the first cooling liquid circuit L1 and the second cooling liquid circuit L2 by using electric energy to realize the circulation function of the cooling liquid.

[0044] In some embodiments, the refrigeration device 100 comprises a first fan 71 arranged at the condenser 2, which drives air by using electric energy to force the air to exchange heat with the condenser 2, and the temperature of the air is increased after the heat exchange.

[0045] In some embodiments, the refrigeration device 100 comprises a second fan 72 arranged at the evaporator 4, which drives air by using electric energy to force the air to exchange heat with the evaporator 4, and the temperature of the air is decreased after the heat exchange.

[0046] In some embodiments, the expansion valve 3 comprises a first expansion valve 31 and a second expansion valve 32, the first expansion valve 31 being in communication with the condenser 2 and the evaporator 4, and the second expansion valve 32 being in communication with the condenser 2 and the first heat exchanger 51.

[0047] In some embodiments, the expansion valve 3 can also be provided with only one, and a first outlet (not shown) and a second outlet (not shown) of the expansion valve 3 are respectively in communication with the evaporator 4 and the first heat exchanger 51; or an adapter valve (not shown) can also be arranged at the outlet of the expansion valve 3, a first outlet of the adapter valve being in communication with the evaporator 4, and a second outlet of the adapter valve being in communication with the first heat exchanger 51.

[0048] In some embodiments, the refrigeration device 100 comprises a valve 8 to control the opening and closing of the first cooling liquid circuit L1 and the second cooling liquid circuit L2.

[0049] Referring to FIG. 1, the refrigeration device 100 of the vehicle according to the present application comprises a compressor 1, a condenser 2, an evaporator 4, a first expansion valve 31, a second expansion valve 32, a first cooling liquid circuit L1, a second cooling liquid circuit L2, a pump 6, a first heat exchanger 51, a second heat exchanger 52, a third heat exchanger 53, a first fan 71, a second fan 72, and a valve 8. Figure 2 In some embodiments, the valve 8 comprises at least a valve inlet 81, a first valve outlet 82, and a second valve outlet 83, the valve inlet 81 is in communication with the first heat exchanger 51, the first valve outlet 82 is in communication with the third heat exchanger 53, and the second valve outlet 83 is in communication with the second heat exchanger 52.

[0050] In some embodiments, the valve 8 is a three-way valve, which can adjust the amount of cooling liquid of the first cooling liquid circuit L1 and the second cooling liquid circuit L2 according to the refrigeration demand, so as to save energy.

[0051] In some embodiments, the valve 8 can be provided in multiple to control the opening and closing of the first cooling liquid circuit L1 and the second cooling liquid circuit L2 respectively.

[0052] The refrigeration device 100 of the vehicle according to the present application can be divided into three main modes, i.e. a refrigeration mode, an air conditioning mode, and a battery pack cooling mode, and can be divided into seven typical scenes according to the combination of use scenes, i.e. single scene (refrigeration, air conditioning, battery pack cooling), double scene (refrigeration / air conditioning, refrigeration / battery pack cooling, air conditioning / battery pack cooling), and triple scene (refrigeration / air conditioning / battery pack cooling). The above scenes are introduced as follows.

[0053] Referring to FIG. 1, the refrigeration device 100 of the vehicle according to the present application comprises a compressor 1, a condenser 2, an evaporator 4, a first expansion valve 31, a second expansion valve 32, a first cooling liquid circuit L1, a second cooling liquid circuit L2, a pump 6, a first heat exchanger 51, a second heat exchanger 52, a third heat exchanger 53, a first fan 71, a second fan 72, and a valve 8. Figure 3 In the refrigeration mode, i.e. only the cargo compartment needs to be refrigerated, the first expansion valve 31 is opened, the second expansion valve 32 is closed, and the pump 6 is closed.

[0054] The compressor 1 compresses the refrigerant into high-temperature and high-pressure refrigerant, which enters the condenser 2 and is cooled by the first fan 71. The high-temperature and high-pressure refrigerant is cooled in the condenser 2, and the refrigerant is throttled and depressurized by the first expansion valve 31 to enter the evaporator 4. The low-temperature and low-pressure refrigerant is cooled in the evaporator 4 by the second fan 72, and then returns to the compressor 1, thereby completing the circulation of the first refrigerant circuit.

[0055] Referring to FIG. 1, the refrigeration device 100 of the vehicle according to the present application comprises a compressor 1, a condenser 2, an evaporator 4, a first expansion valve 31, a second expansion valve 32, a first cooling liquid circuit L1, a second cooling liquid circuit L2, a pump 6, a first heat exchanger 51, a second heat exchanger 52, a third heat exchanger 53, a first fan 71, a second fan 72, and a valve 8. Figure 4 In the air conditioning mode, i.e. only the passenger compartment needs to be refrigerated, the first expansion valve 31 is closed, the second expansion valve 32 is opened, the pump 6 is opened, the valve inlet 81 to the first valve outlet 82 of the valve 8 is disconnected, and the valve inlet 81 to the second valve outlet 83 of the valve 8 is connected.

[0056] The compressor 1 compresses the refrigerant into a high-temperature and high-pressure refrigerant, which enters the condenser 2 and convects through the first fan 71. The high-temperature and high-pressure refrigerant dissipates heat in the condenser 2. The refrigerant throttles and reduces pressure through the second expansion valve 32 and enters the first heat exchanger 51. The refrigerant exchanges heat in the first heat exchanger 51 to absorb the heat of the coolant. The cooled coolant circulates in the first coolant circuit L1 to achieve the air-conditioning function.

[0057] Refer Figure 5 , in the battery pack cooling mode, that is, when only the battery pack needs to be refrigerated, the first expansion valve 31 is closed, the second expansion valve 32 is opened, the pump 6 is opened, the valve inlet 81 of the valve 8 is connected to the first valve outlet 82, and the valve inlet 81 of the valve 8 is disconnected from the second valve outlet 83.

[0058] The compressor 1 compresses the refrigerant into a high-temperature and high-pressure refrigerant, which enters the condenser 2 and convects through the first fan 71. The high-temperature and high-pressure refrigerant dissipates heat in the condenser 2. The refrigerant throttles and reduces pressure through the second expansion valve 32 and enters the first heat exchanger 51. The refrigerant exchanges heat in the first heat exchanger 51 to absorb the heat of the coolant. The cooled coolant circulates in the second coolant circuit L2 to achieve the battery pack cooling function.

[0059] Refer Figure 6 , when the cargo compartment and the battery pack need to be refrigerated, the first expansion valve 31 is opened, the second expansion valve 32 is opened, the pump 6 is opened, the valve inlet 81 of the valve 8 is connected to the first valve outlet 82, and the valve inlet 81 of the valve 8 is disconnected from the second valve outlet 83.

[0060] Refer Figure 7 , when the cargo compartment and the passenger compartment need to be refrigerated, the first expansion valve 31 is opened, the second expansion valve 32 is opened, the pump 6 is opened, the valve inlet 81 of the valve 8 is disconnected from the first valve outlet 82, and the valve inlet 81 of the valve 8 is connected to the second valve outlet 83.

[0061] Refer Figure 8 , when the battery pack and the passenger compartment need to be refrigerated, the first expansion valve 31 is closed, the second expansion valve 32 is opened, the pump 6 is opened, the valve inlet 81 of the valve 8 is connected to the first valve outlet 82, and the valve inlet 81 of the valve 8 is connected to the second valve outlet 83. The valve 81 can adjust the flow rate of the coolant according to the different cooling requirements of the battery pack and the passenger compartment to save energy.

[0062] Refer Figure 1When refrigeration of the cargo compartment, the battery pack and the passenger compartment is required, the first expansion valve 31 is opened, the second expansion valve 32 is opened, the pump 6 is opened, the valve inlet 81 to the first valve outlet 82 of the valve 8 is communicated, and the valve inlet 81 to the second valve outlet 83 of the valve 8 is communicated.

[0063] The refrigeration device 100 can be arbitrarily selected between refrigeration of the cargo compartment, the battery pack and the passenger compartment, and the rotation speed of the compressor 1, the first fan 71 and the second fan 72 can be adjusted according to the refrigeration requirement, so that efficient operation is realized and energy consumption is reduced.

[0064] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structure described in the above embodiments and shown in the accompanying drawings; any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A vehicle refrigeration device, characterized in that, include: The vehicle comprises a compressor, a condenser, an expansion valve, an evaporator, a first heat exchanger, a second heat exchanger, and a third heat exchanger. The compressor, condenser, expansion valve, and evaporator form a first refrigerant circuit to cool the cargo compartment of the vehicle. The compressor, condenser, expansion valve, and a first passage of the first heat exchanger form a second refrigerant circuit. A second passage of the first heat exchanger and the second heat exchanger form a first coolant circuit, where the coolant flowing through the second passage exchanges heat with the refrigerant flowing through the first passage. The cooled coolant after heat exchange flows through the second heat exchanger to cool the passenger compartment of the vehicle. A second passage of the first heat exchanger and the third heat exchanger form a second coolant circuit, where the coolant flowing through the second passage exchanges heat with the refrigerant flowing through the first passage. The cooled coolant after heat exchange flows through the third heat exchanger to cool the battery pack of the vehicle.

2. The vehicle refrigeration device according to claim 1, characterized in that, The first heat exchanger is a plate heat exchanger.

3. The vehicle refrigeration device according to claim 1, characterized in that, The refrigeration device includes valves to control the on / off state of the first coolant circuit and the second coolant circuit.

4. The vehicle refrigeration device according to claim 3, characterized in that, The valve includes at least a valve inlet, a first valve outlet, and a second valve outlet. The valve inlet is connected to the first heat exchanger, the first valve outlet is connected to the third heat exchanger, and the second valve outlet is connected to the second heat exchanger.

5. The vehicle refrigeration device according to claim 1, characterized in that, The second heat exchanger includes a first conduit through which coolant flows to cool the passenger compartment of the vehicle.

6. The vehicle refrigeration device according to claim 5, characterized in that, The third heat exchanger includes a second conduit through which coolant flows to cool the vehicle's battery pack.

7. The vehicle refrigeration device according to claim 6, characterized in that, The refrigeration device includes a pump, the pump inlet of which is connected to the first pipeline and the second pipeline, and the pump outlet of which is connected to the first heat exchanger.

8. The vehicle refrigeration device according to claim 1, characterized in that, The refrigeration device includes a first fan disposed at the condenser; and / or, A second fan is installed at the evaporator.

9. The vehicle refrigeration device according to any one of claims 1 to 8, characterized in that, The expansion valve includes a first expansion valve and a second expansion valve. The first expansion valve connects the condenser and the evaporator, and the second expansion valve connects the condenser and the first heat exchanger.

10. A vehicle, characterized in that, It includes a passenger compartment, a cargo box, a battery pack, and a refrigeration unit for the vehicle as described in any one of claims 1 to 9.

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