Refrigerant-side integrated assembly and vehicle

Abstract

The application provides a refrigerant-side integrated assembly and a vehicle, and aims to solve the combustion risk caused by refrigerant. The refrigerant-side integrated assembly comprises a refrigerant flow channel plate, a compressor, a water-cooled condenser, a liquid storage tank, a first electronic expansion valve and a water-cooled evaporator integrated on the refrigerant flow channel plate; and the refrigerant flow channel plate is provided with refrigerant flow channels in communication with the refrigerant sides of the compressor, the water-cooled condenser, the liquid storage tank, the first electronic expansion valve and the water-cooled evaporator.

Description

TECHNICAL FIELD

[0001] The application relates to the field of whole vehicle refrigerant, in particular to a refrigerant side integrated assembly. BACKGROUND

[0002] The regulations on the GWP (global warming potential) of automobile air conditioner refrigerant are increasingly strict, and the research and application of new refrigerant are imminent, and the situation of automobile refrigerant in various regions of the world is as follows:

[0003] European Union: since 2017, new vehicles use 1234yf (GWP is 4) refrigerant, and the main research direction is to use R744 (CO2, GWP is 1) refrigerant heat pump system;

[0004] United States: since 2017, new vehicles use 1234yf refrigerant, and the patent is controlled by American Honeywell and DuPont, and the main research direction is to promote 1234yf.

[0005] Japan and South Korea: export 1234yf refrigerant for European vehicle models, export R134a (GWP is 1430) for Chinese vehicle models, and at present, R744 refrigerant has the technical reserve close to industrialization.

[0006] China: mainly uses R134a, exports 1234yf for European Union vehicle models, officially accepts the Montreal Protocol-Kigali Amendment in 2021, and R134a working medium is listed in the controlled use directory list.

[0007] According to market research: R290 heat pump type automobile air conditioner heat management system with light weight, integration, high performance and safe operation is urgently needed to enter the market before 2026, and new network vehicle models are switched before 2029, so as to improve the leading right of independent brand enterprises in the global automobile heat management field.

[0008] R290 refrigerant is a class A3 flammable refrigerant, and the biggest technical difficulty in using R290 refrigerant for passenger vehicles is safety, so a highly integrated heat management integrated module on the refrigerant side needs to be developed. SUMMARY

[0009] The application provides a refrigerant side integrated assembly and a vehicle, which are used to solve the above technical problems.

[0010] The technical scheme of the application is as follows:

[0011] The application provides a refrigerant side integrated assembly, which comprises a refrigerant flow channel plate, and a compressor, a water-cooled condenser, a liquid storage tank, a first electronic expansion valve and a water-cooled evaporator integrated on the refrigerant flow channel plate.

[0012] The refrigerant flow channel plate is provided with refrigerant flow channels which are communicated with the compressor, the refrigerant side of the water-cooled condenser, the liquid storage tank, the first electronic expansion valve and the refrigerant side of the water-cooled evaporator.

[0013] Preferably, the refrigerant flow channels provided on the refrigerant flow channel plate comprise:

[0014] The first flow channel provided on the refrigerant flow channel plate is communicated at one end with the exhaust port of the compressor and at the other end with the refrigerant inlet of the water-cooled condenser and the inlet of the second electronic expansion valve;

[0015] The second flow channel provided on the refrigerant flow channel plate is communicated at one end with the refrigerant outlet of the water-cooled condenser and at the other end with the inlet of the liquid storage tank;

[0016] The third flow channel provided on the refrigerant flow channel plate is communicated at one end with the outlet of the liquid storage tank and at the other end with the inlet of the first electronic expansion valve;

[0017] The fourth flow channel provided on the refrigerant flow channel plate is communicated at one end with the outlet of the first electronic expansion valve and at the other end with the inlet of the water-cooled evaporator;

[0018] The fifth flow channel provided on the refrigerant flow channel plate is communicated at one end with the outlet of the water-cooled evaporator and at the other end with the air inlet of the compressor;

[0019] The sixth flow channel provided on the refrigerant flow channel plate is communicated at one end with the outlet of the second electronic expansion valve and at the other end with the fifth flow channel to realize mixing of the refrigerant and then entering the air inlet of the compressor.

[0020] Preferably, the middle part of the sixth flow channel is higher than the other end of the sixth flow channel which is communicated with the fifth flow channel.

[0021] Preferably, the fifth flow channel is divided into a first section which is communicated with the outlet of the water-cooled evaporator and a second section which is communicated with the air inlet of the compressor from the position communicated with the sixth flow channel, the second section is separated from the sixth flow channel by a partition wall, and the refrigerant in the sixth flow channel and the refrigerant in the second section are heat-exchanged through the partition wall.

[0022] Preferably, the compressor is assembled on one side surface of the refrigerant flow channel plate, and the water-cooled condenser, the liquid storage tank, the first electronic expansion valve and the water-cooled evaporator are assembled on the other side surface of the refrigerant flow channel plate.

[0023] The inlet of the liquid storage tank is arranged higher than the outlet of the liquid storage tank.

[0024] Preferably, the refrigerant flow channel plate is further provided with a refrigerant pre-charge port in communication with the refrigerant flow channel.

[0025] Preferably, the refrigerant-side integrated assembly further comprises a first PT sensor, a second PT sensor and a third PT sensor integrated on the refrigerant flow channel plate, the first PT sensor is connected to the fifth flow channel, the second PT sensor is connected to the first flow channel, and the third PT sensor is connected to the third flow channel.

[0026] Preferably, the inlet of the suction flow channel of the compressor is in sealed communication with the suction port of the refrigerant flow channel plate through a suction port sealing structure;

[0027] The outlet of the exhaust flow channel of the compressor is in sealed communication with the exhaust port of the refrigerant flow channel plate through an exhaust port sealing structure and an exhaust adapter block;

[0028] The suction port and the exhaust port of the refrigerant flow channel plate are located on the same plane.

[0029] Preferably, the suction port sealing structure and the exhaust port sealing structure each comprise a metal layer and a rubber layer vulcanized on the outer side of the metal layer;

[0030] The inlet of the suction flow channel of the compressor is provided with a suction sealing groove, and the suction port sealing structure is placed into the suction sealing groove;

[0031] The outlet of the exhaust flow channel of the compressor is provided with an exhaust sealing groove, and the exhaust port sealing structure is placed into the exhaust sealing groove;

[0032] The inlet of the suction flow channel of the compressor extends a first protruding structure towards one side of the refrigerant flow channel plate, and the outlet of the exhaust flow channel of the compressor extends a second protruding structure towards one side of the refrigerant flow channel plate.

[0033] The application also provides a vehicle comprising the above refrigerant-side integrated assembly.

[0034] The technical scheme of the application is:

[0035] The compressor, the water-cooled condenser, the liquid storage tank, the first electronic expansion valve and the water-cooled evaporator are completely integrated on the refrigerant flow channel plate, the setting of the refrigerant pipeline can be completely cancelled, the refrigerant only flows in the refrigerant flow channel formed in the refrigerant flow channel plate, the refrigerant can be prevented from flowing into the front end module and the HVAC assembly of the vehicle, and the combustion safety risk caused by the refrigerant flowing into the front end module and the HVAC assembly can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1An architecture schematic diagram of a vehicle thermal management system in an embodiment of the present application;

[0037] Figure 2 An architecture schematic diagram of a refrigerant circulation system in an embodiment of the present application;

[0038] Figure 3 An assembly schematic diagram of a refrigerant-side integrated assembly in an embodiment of the present application;

[0039] Figure 4 An assembly schematic diagram of a refrigerant-side integrated assembly in an embodiment of the present application;

[0040] Figure 5 A disassembly schematic diagram of a refrigerant-side integrated assembly in an embodiment of the present application;

[0041] Figure 6 A disassembly schematic diagram of a refrigerant-side integrated assembly in an embodiment of the present application;

[0042] Figure 7 A schematic diagram of a refrigerant flow channel plate in an embodiment of the present application;

[0043] Figure 8 A schematic diagram of a refrigerant flow channel plate body in an embodiment of the present application;

[0044] Figure 9 A schematic diagram of a refrigerant flow channel plate body in an embodiment of the present application;

[0045] Figure 10 An assembly schematic diagram of a suction flow channel of a compressor and a refrigerant flow channel plate;

[0046] Figure 11 An assembly schematic diagram of a discharge flow channel of a compressor and a refrigerant flow channel plate;

[0047] Figure 12 A disassembly schematic diagram of a compressor and a refrigerant flow channel plate;

[0048] Figure 13 A schematic diagram of a discharge flow channel of a compressor and a discharge port sealing structure;

[0049] Figure 14 A schematic diagram of a suction flow channel of a compressor and a suction port sealing structure;

[0050] Figure 15 A schematic diagram of a discharge port sealing structure;

[0051] BRIEF DESCRIPTION OF THE DRAWINGS

[0052] 1 - compressor; 2 - water-cooled condenser; 3 - liquid storage tank; 4 - first electronic expansion valve; 5 - second electronic expansion valve; 6 - water-cooled evaporator;

[0053] 101 - flow channel plate body; 1011 - first flow channel; 1012 - second flow channel; 1013 - third flow channel; 1014 - fourth flow channel; 1015 - fifth flow channel; 1016 - sixth flow channel; 1017 - refrigerant filling port;

[0054] 102 - flow channel plate back plate; 1021 - air inlet; 1022 - air outlet;

[0055] 111 - air inlet flow channel; 112 - air outlet flow channel; 113 - air outlet adapter block; 114 - air inlet sealing structure; 115 - air outlet sealing structure; 116 - air inlet sealing groove; 117 - first protruding structure; 118 - air outlet sealing groove; 119 - second protruding structure; 120 - housing fixing screw; 121 - interface fixing screw; 122 - interface fixing screw mounting hole. DETAILED DESCRIPTION

[0056] To make the objectives, technical solutions, and advantages of the present application clearer, further detailed description will be made to the present application with reference to the specific embodiments and the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of the known structures and technologies will be omitted to avoid unnecessary confusion of the concept of the present application.

[0057] Referring to Figure 1 and Figure 2 , the present application provides a vehicle thermal management system, which includes a refrigerant circulation system and a coolant circulation system.

[0058] The refrigerant circulation system includes a compressor 1, a water-cooled condenser 2, a liquid storage tank 3, a first electronic expansion valve 4, a second electronic expansion valve 5, and a water-cooled evaporator 6. The exhaust port of the compressor 1 and the refrigerant inlet of the water-cooled condenser 2 are connected, the refrigerant outlet of the water-cooled condenser 2 and the inlet of the liquid storage tank 3 are connected, the outlet of the liquid storage tank 3 and the inlet of the first electronic expansion valve 4 are connected, the outlet of the first electronic expansion valve 4 and the inlet of the water-cooled evaporator 6 are connected, the outlet of the water-cooled evaporator 6 and the air inlet of the compressor 1 are connected, and the second electronic expansion valve 5 is connected between the exhaust port and the air inlet of the compressor 1.

[0059] The coolant circulation system includes an HVAC assembly, an electric drive module 20, a battery 21, and a front-end module. The HVAC assembly, the electric drive module 20, the battery 21, and the front-end module are connected by valves such as a one-way valve 13, a nine-way valve 12, a first three-way valve 10, and a second three-way valve 11 to form a loop for the flow of coolant.

[0060] The HVAC assembly includes a blower 15, a cold air core 16, and a warm air core 17. The front-end module includes a radiator 18 and a cooling fan 19.

[0061] Of course, the cooling liquid circulation system should also include the first electronic water pump 7 to the third electronic water pump 9.

[0062] Wherein, the inlet of the electric drive module 20 is connected to the second valve port of the nine-way valve 12 and the outlet of the radiator 18 of the HVAC assembly, the outlet of the radiator 18 of the HVAC assembly is connected to the first valve port of the nine-way valve 12, the outlet of the electric drive module 20 is connected to the third valve port of the nine-way valve 12, the outlet of the battery 21 is connected to the fifth valve port of the nine-way valve 12 and the inlet of the one-way valve 13, the inlet of the battery 21 is connected to the outlet of the third electronic water pump 9, the inlet of the third electronic water pump 9 is connected to the fourth valve port of the nine-way valve 12, the inlet of the second electronic water pump 8 is connected to the seventh valve port of the nine-way valve 12, the outlet of the second electronic water pump 8 is connected to the cooling liquid inlet of the water-cooled evaporator 6, the cooling liquid outlet of the water-cooled evaporator 6 is connected to the third interface of the second three-way valve 11, the second interface of the second three-way valve 11 is connected to the inlet of the cold air core 16 of the HVAC assembly, the outlet of the cold air core 16 of the HVAC assembly is connected to the inlet of the second electronic water pump 8, the first interface of the second three-way valve 11 is connected to the sixth valve port of the nine-way valve 12, the first interface of the first three-way valve 10 is connected to the eighth valve port of the nine-way valve 12, the second interface of the first three-way valve 10 is connected to the inlet of the warm air core 17 of the HVAC assembly, the outlet of the warm air core 17 of the HVAC assembly is connected to the inlet of the first electronic water pump 7, the cooling liquid outlet of the water-cooled condenser 2 is connected to the third interface of the first three-way valve 10, the ninth interface of the first three-way valve 10 is connected to the inlet of the first electronic water pump 7, and the outlet of the first electronic water pump 7 is connected to the cooling liquid inlet of the water-cooled condenser 2.

[0063] The cooling liquid circulation system and the refrigerant circulation system are coupled by the water-cooled condenser 2 and the water-cooled evaporator 6, the cooling liquid exchanges heat with the refrigerant through the water-cooled condenser 2 and the water-cooled evaporator 6, and the temperature of the cooling liquid is increased or decreased by the radiator 18 of the front-end module and the like, so as to meet the needs of the HVAC assembly, the electric drive module 20 and the battery 21 in different scenarios.

[0064] Referring to Figure 2, based on the foregoing refrigerant circulation system, a refrigerant side integrated assembly is provided, the refrigerant side integrated assembly includes a refrigerant flow channel plate, a compressor 1, a water-cooled condenser 2, a liquid storage tank 3, a first electronic expansion valve 4 and a water-cooled evaporator 6 integrated together; the cooling liquid side integrated assembly includes a cooling liquid flow channel plate, a nine-way valve 12, a first three-way valve 10, a second three-way valve 11, a first electronic water pump 7, a second electronic water pump 8 and a third electronic water pump 9 integrated together; the cooling liquid flow channel plate is fixed on the refrigerant flow channel plate; the refrigerant flow channel plate is provided with refrigerant flow channels that are in communication with the refrigerant side of the compressor 1, the water-cooled condenser 2, the liquid storage tank 3, the first electronic expansion valve 4 and the refrigerant side of the water-cooled evaporator 6; the cooling liquid flow channel plate is provided with cooling liquid flow channels that are in communication with the cooling liquid side of the nine-way valve 12, the first three-way valve 10, the second three-way valve 11, the expansion water kettle 14, the first electronic water pump, the second electronic water pump, the third electronic water pump, the cooling liquid side of the water-cooled condenser 2 and the cooling liquid side of the water-cooled evaporator 6, and the cooling liquid flow channels are also used to be connected to the front end module, the electric drive module 20, the battery 21 and the HVAC assembly of the vehicle through pipelines.

[0065] For the refrigerant side integrated assembly, the compressor 1, the water-cooled evaporator 6, the water-cooled condenser 2, the first electronic expansion valve 4 and the second electronic expansion valve 5 are highly integrated together through the refrigerant flow channel plate, all the refrigerant pipelines are cancelled, and the most simplified refrigerant side integrated assembly is formed; the refrigerant side integrated assembly is isolated from the front end module and the HVAC assembly of the vehicle, the refrigerant only flows in the refrigerant flow channels on the refrigerant flow channel plate, the refrigerant can be prevented from entering the front end module and the HVAC assembly, the combustion risk caused by the refrigerant is avoided, and the safety is improved. Since the refrigerant flow channels on the refrigerant flow channel plate act as the refrigerant pipelines, the overall cost can be reduced due to the cancellation of the refrigerant pipelines; and the refrigerant flow channels are shorter than the original refrigerant pipelines in the overall length, so that the refrigerant charging amount can be shortened; the refrigerant flow channel plate can also realize the pre-charge of the refrigerant.

[0066] Referring to Figures 3 to 6 , the compressor 1 is assembled on one side surface of the refrigerant flow channel plate through screws, the water-cooled condenser 2, the liquid storage tank 3, the first electronic expansion valve 4 and the water-cooled evaporator 6 are assembled on the other side surface of the refrigerant flow channel plate through screws; the inlet of the liquid storage tank 3 is arranged higher than the outlet of the liquid storage tank 3, the liquid storage tank 3 adopts an arrangement form of entering from the top and discharging from the bottom, which is beneficial to reduce the mass of the frozen oil remaining in the liquid storage tank 3 and improve the oil circulation efficiency of the system.

[0067] Referring to Figures 3 to 9In the embodiment of the present application, the refrigerant flow channel provided on the refrigerant flow channel plate comprises: a first flow channel 1011 provided on the refrigerant flow channel plate, one end of the first flow channel 1011 being in communication with the exhaust port of the compressor 1, and the other end being in communication with the refrigerant inlet of the water-cooled condenser 2 and the inlet of the second electronic expansion valve 5; a second flow channel 1012 provided on the refrigerant flow channel plate, one end of the first flow channel 1011 being in communication with the refrigerant outlet of the water-cooled condenser 2, and the other end being in communication with the inlet of the liquid storage tank 3; a third flow channel 1013 provided on the refrigerant flow channel plate, one end of the third flow channel 1013 being in communication with the outlet of the liquid storage tank 3, and the other end being in communication with the inlet of the first electronic expansion valve 4; a fourth flow channel 1014 provided on the refrigerant flow channel plate, one end of the fourth flow channel 1014 being in communication with the outlet of the first electronic expansion valve 4, and the other end being in communication with the inlet of the water-cooled evaporator 6; a fifth flow channel 1015 provided on the refrigerant flow channel plate, one end of the fifth flow channel 1015 being in communication with the outlet of the water-cooled evaporator 6, and the other end being in communication with the air inlet of the compressor 1; and a sixth flow channel 1016 provided on the refrigerant flow channel plate, one end of the sixth flow channel 1016 being in communication with the outlet of the second electronic expansion valve 5, and the other end being in communication with the fifth flow channel 1015 to realize mixing of the refrigerant and then entering the air inlet of the compressor 1.

[0068] The compressor 1 realizes hot gas bypassing through the second electronic expansion valve 5, and realizes increasing the suction pressure of the compressor 1 at extremely low temperature, so that the heat pump system is not affected by the ambient temperature and performs heating.

[0069] Referring to Figure 7 The refrigerant flow channel plate in the embodiment of the present application comprises a flow channel plate body 101 and a flow channel plate back plate 102 screwed with the flow channel plate body 101, wherein the first flow channel 1011 to the sixth flow channel 1016 are formed on the flow channel plate body 101 and are covered by the flow channel plate back plate 102. The compressor 1 is assembled on the flow channel plate back plate 102, and the remaining liquid storage tank 3, water-cooled condenser 2, water-cooled evaporator 6, first electronic expansion valve 4 and second electronic expansion valve 5 are installed on the flow channel plate body 101. Figure 9 Mounting seats of the PT sensors and mounting seats of the electronic expansion valves are provided on the flow channel plate body 101.

[0070] Referring to Figure 9 In order to realize pre-priming of the refrigerant, a refrigerant priming port 1017 is provided on the flow channel plate body 101.

[0071] Referring to Figure 7, the suction and exhaust structure of the compressor 1 is directly fixed on the flow channel plate back plate 102 through screws and an adapter plate, so as to cancel the refrigerant pipeline, reduce the volume, and reduce the refrigerant charge. The suction port 1021 and the exhaust port 1022 of the compressor are arranged on the flow channel plate back plate 102.

[0072] With reference to Figure 7 , Figure 12 , Figure 13 and Figure 14 , since there is relatively large vibration during the operation of the compressor 1, a reliable fixing method needs to be designed to prevent fatigue failure caused by vibration from causing the sealing structure to fail. The compressor 1 is fixed through three housing fixing screws 120 and three interface fixing screws 121, and M8 or above is recommended. The three housing fixing screws 120 are arranged in a triangular shape, and the three housing fixing screws 120 are arranged at the center of the mass center of the compressor and the triangle, which can effectively improve the natural frequency of the fixed compressor 1 and prevent resonance. Since the exhaust pulsation and vibration on the exhaust side are relatively large, two interface fixing screw mounting holes 122 are arranged beside the outlet of the exhaust flow channel 112, two M8 interface fixing screws 121 are arranged horizontally, which can prevent leakage caused by uneven stress on one side of the sealing gasket; the inlet of the suction flow channel 111 of the compressor 1 is arranged on the compressor housing, and one housing fixing screw 120 is arranged above and below, so one interface fixing screw mounting hole 122 is arranged beside the inlet of the suction flow channel 111, and one interface fixing screw 121 can be used to realize fastening and sealing.

[0073] Since the oil circulation rate of the system affects the COP of the system, that is, the oil needs to be retained in the compressor 1 and cannot participate in the heat exchange cycle. Generally, an oil separation device is arranged at the outlet of the compressor 1 to separate the refrigerant and the refrigerating oil through gravity and centrifugal force, so the outlet of the exhaust flow channel of the compressor 1 should be vertically upward, or within ±45° of the vertically upward direction. Therefore, the exhaust adapter block 113 is arranged in the embodiment, with reference to Figure 10 and 11 , the outlet of the exhaust flow channel 112 of the compressor 1 is connected to the exhaust port 1022 on the flow channel plate back plate 102 through the exhaust adapter block 113 and the exhaust port sealing structure 115, so as to realize the oil separation effect, and realize that the exhaust port and the suction port of the compressor 1 are on the same plane (here, the exhaust port of the compressor 1 refers to the gas outlet after the adapter of the exhaust adapter block 113; the suction port of the compressor 1 refers to the inlet of the suction flow channel 111 of the compressor 1, and the inlet of the suction flow channel 111 of the compressor 1 is matched with the suction port 1022 on the flow channel plate back plate 102 through the suction port sealing structure 114), which is beneficial to the direct assembly of the compressor 1 and the refrigerant flow channel plate.

[0074] With reference to Figure 11The PT sensor for detecting the exhaust temperature of the compressor 1 can be integrated on the exhaust adapter 113 to ensure measurement accuracy.

[0075] The air inlet sealing structure 114 and the exhaust port sealing structure 115 in the embodiment of the application adopt a metal and rubber composite sealing ring, which can improve the compression rate and prevent the rubber part from permanent deformation, thereby improving the sealing effect and achieving simultaneous axial and radial sealing using a single metal and rubber composite sealing ring. The air inlet sealing structure 114 and the exhaust port sealing structure 115 have the same structure, which is described in detail with reference to Figure 15 The exhaust port sealing structure 115 includes a metal layer 1151 and a rubber layer 1152 vulcanized on the outer circle of the metal layer 1151.

[0076] Due to the inevitable size tolerance of the air inlet 1021 and the exhaust port 1022 on the flow channel plate back plate 102, the air inlet sealing structure 114 and the exhaust port sealing structure 115 can realize hard assembly of the compressor 1 on the flow channel plate back plate 102 without leakage.

[0077] With reference to Figure 12 The air inlet sealing groove 116 required by the air inlet sealing structure 114 is arranged at the inlet of the air inlet flow channel 111 of the compressor 1, and the flow channel plate back plate 102 part only needs to ensure the roughness interface position degree to realize sealing, reducing the machining amount of the flow channel plate side sealing end; the inlet of the air inlet flow channel of the compressor 1 extends a first protruding structure 117 towards the side of the flow channel plate back plate 102, realizing the guiding function of the sealing joint.

[0078] With reference to Figure 13 The exhaust sealing groove 118 required by the exhaust port sealing structure 115 is arranged at the outlet of the exhaust flow channel 112 of the compressor 1, and the flow channel plate back plate 102 part only needs to ensure the roughness interface position degree to realize sealing, reducing the machining amount of the flow channel plate side sealing end; the outlet of the exhaust flow channel 112 of the compressor 1 extends a second protruding structure 119 towards the side of the flow channel plate back plate 102, realizing the guiding function of the sealing joint.

[0079] With reference to Figure 7 and Figure 8 In the embodiment of the application, the refrigerant side integrated assembly further includes a first PT sensor PT1, a second PT sensor PT2 and a third PT sensor PT3 integrated on the refrigerant flow channel plate, the first PT sensor is connected to the fifth flow channel 1015, the second PT sensor is connected to the first flow channel 1011, and the third PT sensor is connected to the third flow channel 1013.

[0080] With reference to Figure 8The middle part of the sixth flow channel 1016 is higher than the other end of the sixth flow channel 1016 connected with the fifth flow channel 1015. Since the sixth flow channel 1016 as a hot gas bypass flow channel is only used at a very low temperature heat pump, the frequency of use is low, so the other end of the sixth flow channel 1016 connected with the fifth flow channel 1015 is lifted by 10-20mm, preventing the refrigeration oil from being left in the sixth flow channel 1016 realizing hot gas bypass in the conventional refrigeration and heating mode.

[0081] Referring to Figure 8 The fifth flow channel 1015 is divided into a first section connected with the outlet of the water-cooled evaporator 6 and a second section connected with the suction port of the compressor 1 from the position connected with the sixth flow channel 1016, and the second section is separated from the sixth flow channel 1016 by a partition wall, and the refrigerant in the sixth flow channel 1016 and the refrigerant in the second section are heat exchanged through the partition wall. By using the partition wall, the condensed high-pressure medium-temperature refrigerant in a gas-liquid mixed state at the outlet of the water-cooled condenser 2 is heat exchanged with the gaseous superheated refrigerant at the outlet of the water-cooled evaporator 6, thereby increasing the supercooling degree of the refrigerant entering the suction port of the compressor 1 (about 5℃ under the maximum refrigeration working condition), thereby improving the system performance.

[0082] The second section connected with the suction port of the compressor 1 is used as a mixing section, and the throttling flow channel (i.e. the sixth flow channel 1016) after the second electronic expansion valve 5 is connected to the first section connected with the outlet of the water-cooled evaporator 6, and the natural gas bypass flow channel and the low-pressure flow channel are vertically arranged, and the turbulent flow formed by the vertical impact of the fluid is more conducive to the mixing of the two different state refrigerants, so as to return to the suction port of the compressor 1, so that the gaseous high-temperature refrigerant after the throttling of the second electronic expansion valve under the hot gas bypass working condition can be fully mixed with the low-pressure two-phase refrigerant, thereby preventing the liquid strike of the compressor 1.

[0083] In the embodiment of the present application, the refrigerant flowing into the refrigerant side integrated assembly can be R134a, 1234yf, R290, etc. When the refrigerant is R290 medium, R290 refrigerant is A3 grade flammable refrigerant. The biggest technical difficulty in using R290 refrigerant in a passenger vehicle is safety. The refrigerant side integrated assembly in the embodiment of the present application is completely isolated from the front end module and the HVAC assembly, and can completely avoid the risk of combustion caused by R290 medium.

[0084] It should be noted that each embodiment in the present specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts between each embodiment can be referred to.

[0085] Although preferred embodiments of the application have been described, those skilled in the art will appreciate that other modifications than those specifically described can be made within the scope of the application. Accordingly, the appended claims are intended to embrace all such alternatives and modifications as can fall within the scope of the application.

[0086] It also needs to be explained that, in this article, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, relational terms such as "first" and "second" are used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements does not include those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or terminal device including the element.

[0087] The above describes the technical solutions provided by the present application in detail. The principles and implementation modes of the present application are described by applying specific examples in this article. The above description of the embodiments is only for the purpose of helping to understand the present application, and the content of the description should not be understood as a limitation on the present application. Meanwhile, for those skilled in the art, according to the present application, there will be different forms of changes in specific implementation modes and application ranges, which do not need to be enumerated here and cannot be enumerated here, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A refrigerant-side integrated assembly, characterized in that, include: A refrigerant flow channel plate, and a compressor, a water-cooled condenser, a liquid receiver, a first electronic expansion valve, and a water-cooled evaporator integrated on the refrigerant flow channel plate; The refrigerant flow channel plate is provided with refrigerant flow channels that are connected to the refrigerant side of the compressor, the water-cooled condenser, the liquid receiver, the first electronic expansion valve, and the refrigerant side of the water-cooled evaporator; The refrigerant flow channels provided on the refrigerant flow channel plate include: A first flow channel is provided on the refrigerant flow channel plate, with one end of the first flow channel connected to the exhaust port of the compressor and the other end connected to the refrigerant inlet of the water-cooled condenser and the inlet of the second electronic expansion valve. A second flow channel is provided on the refrigerant flow channel plate, one end of which is connected to the refrigerant outlet of the water-cooled condenser, and the other end is connected to the inlet of the liquid storage tank; A third flow channel is provided on the refrigerant flow channel plate, one end of which is connected to the outlet of the liquid storage tank, and the other end is connected to the inlet of the first electronic expansion valve; A fourth flow channel is provided on the refrigerant flow channel plate, one end of which is connected to the outlet of the first electronic expansion valve, and the other end is connected to the inlet of the water-cooled evaporator; A fifth flow channel is provided on the refrigerant flow channel plate, one end of which is connected to the outlet of the water-cooled evaporator, and the other end is connected to the air inlet of the compressor. A sixth flow channel is provided on the refrigerant flow channel plate. One end of the sixth flow channel is connected to the outlet of the second electronic expansion valve, and the other end is connected to the fifth flow channel to allow the refrigerant to mix and then enter the compressor inlet. The middle part of the sixth flow channel is higher than the other end of the sixth flow channel connected to the fifth flow channel. The fifth flow channel is divided into a first section connected to the outlet of the water-cooled evaporator and a second section connected to the compressor inlet from the position where it connects to the sixth flow channel. The second section is separated from the sixth flow channel by a partition wall, and the refrigerant in the sixth flow channel and the refrigerant in the second section are heat-transferred through the partition wall.

2. The refrigerant-side integrated assembly according to claim 1, characterized in that, The compressor is mounted on one side of the refrigerant flow channel plate, and the water-cooled condenser, liquid receiver, first electronic expansion valve and water-cooled evaporator are mounted on the other side of the refrigerant flow channel plate. The inlet of the liquid storage tank is positioned higher than the outlet of the liquid storage tank.

3. The refrigerant-side integrated assembly according to claim 1, characterized in that, The refrigerant flow channel plate is also provided with a refrigerant pre-fill port that communicates with the refrigerant flow channel.

4. The refrigerant-side integrated assembly according to claim 1, characterized in that, The refrigerant-side integrated assembly further includes a first PT sensor, a second PT sensor, and a third PT sensor integrated on the refrigerant flow channel plate. The first PT sensor is connected to the fifth flow channel, the second PT sensor is connected to the first flow channel, and the third PT sensor is connected to the third flow channel.

5. The refrigerant-side integrated assembly according to claim 2, characterized in that, The inlet of the compressor's suction channel is sealed to the suction port of the refrigerant flow channel plate through a suction port sealing structure. The outlet of the compressor's exhaust channel is sealed and connected to the exhaust port of the refrigerant channel plate through an exhaust adapter block and an exhaust port sealing structure. The intake and exhaust ports of the refrigerant flow channel plate are located on the same plane.

6. The refrigerant-side integrated assembly according to claim 5, characterized in that, Both the air intake sealing structure and the air exhaust sealing structure include: a metal layer and a rubber layer vulcanized on the outer ring of the metal layer; The compressor has a suction sealing groove at the inlet of the suction channel, and the suction port sealing structure is placed into the suction sealing groove. An exhaust sealing groove is provided at the outlet of the compressor's exhaust passage, and the exhaust port sealing structure is placed into the exhaust sealing groove. The compressor has a first protruding structure extending from the inlet of the suction channel toward the refrigerant flow channel plate, and a second protruding structure extending from the outlet of the discharge channel toward the refrigerant flow channel plate.

7. A vehicle, characterized in that, Includes the refrigerant-side integrated assembly as described in any one of claims 1 to 6.

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