CN102331048B - A composite air-water dual heat source heat pump type electric vehicle air conditioning system - Google Patents

Abstract

The invention provides a composite air-water dual heat source heat pump air-conditioning system for electric vehicles, which is characterized in that: the air-conditioning system includes a vehicle-used fully enclosed variable-frequency air-conditioning compressor driven by a DC motor, an external composite air-water Dual heat source utilization device, dual heat exchange device in the car, liquid storage dryer, gas-liquid separator, low-pressure throttle valve, compressor cooling and efficiency mixing system, power motor waste heat recovery system, system mode switching device, etc. The electric vehicle air-conditioning system of the present invention is used to solve the outstanding problem that the current electric vehicle air-conditioning system cannot normally heat and operate in cooperation with the electric heating system when the outdoor temperature is too low. .

Description

A composite air-water dual heat source heat pump type electric vehicle air conditioning system

technical field

The present invention relates to an electric vehicle air conditioning system, in particular to a composite air-water dual heat source heat pump type electric vehicle air conditioning system.

Background technique

With the development of electric vehicle technology, electric vehicle air conditioners are becoming more and more restrictive to its development. The reason is that heating in winter is greatly restricted due to the lack of internal combustion engines. The currently developed air-conditioning system for electric vehicles will cause the exhaust temperature of the compressor to be too high when the outdoor ambient temperature is too low, making it unable to operate normally during low-temperature heating. Therefore, the system mode of the refrigeration system and electric heating is basically used to cooperate , thereby greatly increasing the power consumption during heating in winter, seriously affecting the application and popularization of electric vehicles in the northern region.

Contents of the invention

The purpose of the present invention is to provide a composite air-water dual heat source heat pump type electric vehicle air conditioning system to solve the problem that the currently developed electric vehicle air conditioning system cannot normally heat and refrigerate when the outdoor temperature is too low. The outstanding problem of excessive power consumption in the running electric vehicle air conditioning system mode.

The purpose of the present invention can be achieved through the following technical measures:

The compound air-water dual heat source heat pump air-conditioning system for electric vehicles of the present invention includes a fully enclosed variable-frequency air-conditioning compressor for a vehicle driven by a DC motor, a composite air-water dual heat source utilization device outside the vehicle, and a double heat exchange device inside the vehicle. , liquid storage dryer, low-pressure throttle valve, gas-liquid separator, system mode switching device, compressor cooling and efficiency mixing system, and power motor waste heat recovery system, etc. The fully enclosed frequency conversion air conditioner compressor for vehicles is composed of a compressor housing, a motor, a fixed scroll, a movable scroll, and a cooling and efficiency mixing system. The air-mixing system for cooling and increasing efficiency of the compressor is composed of a built-in air-cooling and increasing-efficiency air-mixing mechanism of the compressor and an external air-mixing processing and control device of the compressor; The compressor built-in gas mixing hole connection channel and the external quick connector connected to the other end of the compressor built-in gas mixing hole connection channel and fixed on the compressor shell are divided into low-pressure gas mixing mechanism, medium-pressure gas mixing mechanism, high-pressure gas mixing mechanism There are three types of gas mechanism; the built-in gas mixing hole of the compressor of the low-pressure gas mixing mechanism is opened in the corresponding casing part of the compressor suction chamber or connected with the compressor suction pipe through a quick three-way joint, and the medium-pressure gas mixing mechanism The built-in gas mixing hole of the compressor of the mechanism is opened at the corresponding position of the fixed scroll body of the compressor and the corresponding part of the first compression chamber, and the built-in gas mixing hole of the compressor of the high-pressure gas mixing mechanism is opened at the fixed scroll body of the compressor and the second compression chamber. The corresponding position of the corresponding part of the cavity; the external gas mixing treatment and control device of the compressor is composed of a gas mixing throttle valve, a gas mixing heat exchanger, a gas mixing check valve, and an external connecting pipe of the gas mixing interface of the compressor, wherein the gas mixing throttle The valve is any kind of throttling and pressure-reducing device among electronic expansion valve, thermal expansion valve, capillary tube or short throttle tube; the gas-mixing heat exchanger is of different-diameter casing type, spacer plate type, box-tube type or shell-and-tube type. Any one of the heaters; the power motor waste heat recovery system consists of an external composite air-water dual heat source utilization device, a motor waste water cooling device, a motor cooling water pump, and the first, second and third motor waste heat cycle control valves 1. The first and second air-motor waste heat auxiliary heat sources are composed of two medium heat exchangers and connecting pipes. The system mode switching device is composed of a function control valve, a first, a second, a third, a fourth one-way valve, a gas mixing control valve, a gas mixing heat exchanger bypass valve, a defrosting bypass valve, a first air conditioning air duct control valve It is composed of the second air-conditioning air duct control valve (which can realize the cooling, ordinary heating, low-temperature heating, window defrosting/defrosting and surface defrosting of the external low-temperature heat source heat exchanger of the electric vehicle by the automotive air-conditioning system. working mode switching).

The outlet of the fully enclosed variable frequency air conditioner compressor for vehicles is exchanged with the air-heat pump working medium of the composite air-water dual heat source utilization device outside the vehicle and the dual heat exchange device inside the vehicle through a functional control valve and corresponding connecting pipelines. The heater and the gas-liquid separator are connected to corresponding interfaces; the outlet of the gas-liquid separator is connected to the suction port of the fully enclosed frequency conversion air-conditioning compressor for vehicles; The interface is connected to the outlet of the first one-way valve and the inlet of the second one-way valve, the outlet of the second one-way valve is connected to the outlet of the liquid storage drier and the outlet of the fourth one-way valve, and the outlet of the liquid storage drier is connected to the inlet and the mixing chamber of the gas mixing control valve respectively. The inlet of the bypass valve of the gas heat exchanger is connected to the first inlet of the gas-mixing heat exchanger, and the outlet of the bypass valve of the gas-mixing heat exchanger and the first outlet of the gas-mixing heat exchanger are connected to the inlet of the low-pressure throttle valve and the defrosting bypass The inlet of the valve, the outlet of the low-pressure throttle valve are connected to the inlet of the first check valve and the inlet of the third check valve, the outlet of the defrosting bypass valve is connected to the inlet of the first check valve and the inlet of the third check valve, and the outlet of the third check valve It is connected to the inlet of the air-heat pump working fluid two-medium heat exchanger of the double heat exchange device in the car and the inlet of the fourth one-way valve; the outlet of the mixed gas control valve is connected to the inlet of the mixed gas throttle valve, and the outlet of the mixed gas throttle valve is connected to the mixed gas exchanger The second inlet of the heater, the second outlet of the gas-mixing heat exchanger are connected to the inlet of the gas-mixing check valve, and the outlet of the gas-mixing check valve is connected to the gas-mixing port of the fully enclosed frequency conversion air conditioner compressor for vehicles; the double heat exchange device in the vehicle is composed of The first air-motor waste heat auxiliary heat source two-medium heat exchanger and the air-heat pump working fluid two-medium heat exchanger are installed in the air duct in the vehicle in combination. The first air-motor waste heat auxiliary heat source two-medium heat exchanger is placed The side of the air outlet of the air-heat pump working medium two-medium heat exchanger; the first air-conditioning air duct control valve is installed at the air outlet of the air-conditioning air duct in the car (can realize the mutual switching between the defrosting/fog air outlet and the air outlet in the car ); the second air-conditioning duct control valve is installed at the air inlet of the air-conditioning duct in the car (can realize the mutual switching of the air intake inside and outside the car).

The fully enclosed variable frequency air conditioner compressor for vehicles driven by a DC motor in the present invention is any one of piston type, scroll type, and triangular rotor type compressors, and the fully enclosed variable frequency air conditioner compressor for vehicles is The motor and the DC motor are enclosed in the same airtight casing.

More specifically, the present invention can be divided into a main circulation system and a mixed gas circulation system in terms of system composition and structure, wherein the main circulation system is characterized by: the outlet of a fully enclosed variable frequency air conditioner compressor for vehicles driven by a DC motor is connected to a functional control valve, and the function The control valve is connected to the interface of the composite air-water dual heat source utilization device outside the vehicle, and the other interface of the composite air-water dual heat source utilization device outside the vehicle is connected to the outlet of the first check valve and the inlet of the second check valve, and the second check valve The outlet of the direction valve is connected to the outlet of the liquid storage drier and the fourth one-way valve, the outlet of the liquid storage drier is connected to the first inlet of the gas mixing heat exchanger and the inlet of the bypass valve of the gas mixing heat exchanger, and the first outlet of the gas mixing heat exchanger is connected to The inlet of the low-pressure throttle valve, the outlet of the bypass valve of the air-mixing heat exchanger are connected to the inlet of the low-pressure throttle valve and the inlet of the defrosting bypass valve, and the outlet of the low-pressure throttle valve is connected to the inlet of the first check valve and the inlet of the third check valve. The outlet of the frost bypass valve is connected to the inlet of the first one-way valve and the inlet of the third one-way valve, and the outlet of the third one-way valve is connected to the inlet of the air-heat pump working medium two-medium heat exchanger of the double heat exchange device in the car, and the double heat exchanger in the car The outlet of the air-heat pump working fluid two-medium heat exchanger of the heating device is connected to the function control valve, the function control valve is connected to the inlet of the gas-liquid separator, and the outlet of the gas-liquid separator is connected to the suction of the fully enclosed inverter air conditioner compressor for vehicles driven by a DC motor mouth.

The characteristics of the air-mixing circulation system are: the outlet of the fully enclosed variable-frequency air-conditioning compressor driven by a DC motor is connected to the function control valve, the function control valve is connected to the interface of the composite air-water dual heat source heat exchange device outside the vehicle, and the composite gas-water heat exchange device outside the vehicle is -The other interface of the water double heat source heat exchange device is connected to the outlet of the first one-way valve and the inlet of the second one-way valve, the outlet of the second one-way valve is connected to the outlet of the liquid storage drier and the outlet of the fourth one-way valve, and the outlet of the liquid storage drier Connect to the inlet of the mixed gas control valve, the outlet of the mixed gas control valve to the inlet of the mixed gas throttle valve, the outlet of the mixed gas throttle valve to the second inlet of the mixed gas heat exchanger, the second outlet of the mixed gas heat exchanger to the inlet of the mixed gas check valve, The air-mixing check valve outlet is connected to the air-mixing port of the fully-enclosed variable-frequency air-conditioning compressor for vehicles driven by a DC motor.

The characteristics of the air-water dual heat source utilization system are: the outlet of the motor waste heat cooling device is connected to the inlet of the motor cooling water pump, and the outlet of the motor cooling water pump is respectively connected to the inlet of the first waste heat recovery control valve, the second waste heat recovery control valve inlet and the third waste heat The inlet of the recovery control valve and the outlet of the first waste heat recovery control valve are connected to the inlet of the two-medium heat exchanger of the first air-motor waste heat auxiliary heat source installed in the air-conditioning duct in the car and installed on the side of the air outlet of the double heat exchange device in the car , the outlet of the first air-motor waste heat auxiliary heat source two-medium heat exchanger is connected to the motor waste heat cooling device inlet, and the second waste heat recovery control valve outlet is connected to the motor waste heat auxiliary heat source channel of the composite air-water dual heat source heat exchange device outside the vehicle Inlet, the outlet of the third waste heat recovery control valve is connected to the second air-motor waste heat auxiliary heat source two-medium heat exchanger inlet on the side of the air inlet of the composite air-water dual heat source heat exchange device outside the vehicle, and the composite air-water outside the vehicle The outlet of the motor waste heat auxiliary heat source channel of the dual heat source heat exchange device, the outlet of the second air-motor waste heat auxiliary heat source two-medium heat exchanger is connected to the inlet of the motor waste heat cooling device.

The system mode switching device can realize the interface connection between the outlet of the fully enclosed variable frequency air conditioner compressor for vehicles and the composite air-water dual heat source heat exchange device outside the vehicle, and the outlet of the fully enclosed variable frequency air conditioner compressor for vehicles through the function control valve. It is connected with the interface of the air-heat pump working fluid two-medium heat exchanger of the dual heat exchange device inside the vehicle, the inlet of the gas-liquid separator is connected with the other interface of the composite air-water dual heat source heat exchange device outside the vehicle, and the inlet of the gas-liquid separator Mutual switching for connection with the other interface of the air-heat pump working fluid two-medium heat exchanger of the double heat exchange device inside the vehicle. The gas mixing control valve can realize the connection between the outlet of the liquid storage drier and the gas mixing circuit. The first one-way valve, the second one-way valve, the third one-way valve, and the fourth one-way valve can realize electric vehicle cooling, ordinary heating, low-temperature heating, window defrosting/defogging and low-temperature heat sources outside the car The five system modes of defrosting on the surface of the heat exchanger share the refrigeration pipeline and equipment; the bypass valve of the mixed gas heat exchanger can bypass the mixed gas heat exchanger; the defrosting bypass valve can realize the bypass of the low pressure throttle valve ; The first air-conditioning air duct control valve can realize the mutual switching between the defrosting/fog air outlet and the air outlet inside the car, and the second air-conditioning air duct control valve can realize the mutual switching between the air inlet inside the car and the air outside the car.

The invention adopts the gas mixing device to solve the problem that the conventional automobile air-conditioning system cannot operate normally when the outdoor temperature is too low. The air-mixing system for cooling and increasing efficiency of the compressor is composed of a built-in air-cooling and increasing-efficiency mixing mechanism of the compressor and an external air-mixing processing and control device of the compressor; The built-in gas mixing hole connection channel and the external quick joint connected to the other end of the compressor built-in gas mixing hole connection channel and fixed on the compressor shell are divided into low pressure gas mixing mechanism, medium pressure gas mixing mechanism and high pressure gas mixing mechanism There are three types; the gas-mixing heat exchanger can be divided into different-diameter casing type, spacer plate type, box-and-tube type and shell-and-tube type, etc. The air-mixing throttle valve can adopt any throttling and pressure-reducing device among electronic expansion valve, thermal expansion valve, capillary tube or short throttle tube. The air mixing check valve can maximize the air mixing volume and enhance the air mixing effect.

The principle of the gas-mixing cycle is as follows. After the refrigerant liquid flows out of the condenser, it is divided into two paths, one of which enters the main cycle, passes through the gas-mixing heat exchanger for heat exchange, enters the evaporator after passing through the low-pressure throttle valve, and is finally absorbed by the suction port of the compressor. Inhalation; the other way enters the gas mixing cycle, passes through the gas mixing throttle valve and enters the gas mixing heat exchanger for heat exchange, cools the refrigerant in the main cycle and becomes gaseous, and finally enters the compressor through the gas mixing interface of the compressor. The principle is: add a certain amount of refrigerant gas of a certain intermediate pressure to a certain intermediate position or suction position of the compressor through the gas mixing circuit, so as to reduce the discharge temperature of the compressor from T _e ' to T _e purpose, and can increase the displacement of the compressor to a certain extent, thereby increasing the total heating capacity of the heat pump cycle; at the same time, the high-pressure refrigerant liquid passing through the main circuit of the gas-mixing heat exchanger is cooled from T _f to T _g , which increases the Absorb heat from the outdoor low temperature air heat source, thereby improving the operating efficiency and reliability of the heat pump system (see Figure 14).

The power motor waste heat recovery system described in the present invention consists of an external composite air-water dual heat source heat exchange device, a motor waste water cooling device, a motor cooling water pump, the first, second and third motor waste heat cycle control valves, the first , Two air-motor waste heat auxiliary heat source, two medium heat exchangers and connecting pipes.

The motor waste water cooling device described in the present invention includes a closed water jacket inner shell as a motor shell, a closed water jacket outer shell, and a cooling water channel partition connected between the closed water jacket inner shell. The inner wall of the sleeve inner shell is provided with a number of axial straight ribs forming a cooling air passage, a DC motor is installed in the ring cavity formed by the inner end faces of several axial straight ribs, and a built-in air cooling fan is installed at one end of the motor shaft. And the built-in air-cooling mechanism of the motor is composed of the axial straight ribs and the built-in air-cooling fan.

The fully enclosed variable frequency air conditioner compressor for vehicles driven by a DC motor described in the present invention is any one of piston type, scroll type, and triangular rotor compressors, and the fully enclosed variable frequency air conditioner for vehicles The compressor and the DC motor are enclosed in the same airtight casing.

The composite air-water dual heat source utilization device outside the vehicle described in the present invention has an integrated structure; the double heat exchange device inside the vehicle is a combined hierarchical heating device; the integrated composite air-water dual heat source utilization device outside the vehicle It is any one of finned-round tube-in-tube heat exchanger, laminated tube-in-tube heat exchanger or parallel-flow flat tube-in-tube heat exchanger, and all have three heat pump working fluid, motor waste heat auxiliary heat source and low-temperature air heat source media channel. The double heat exchange device inside the car is composed of an air-heat pump working fluid two-medium heat exchanger and an air-motor waste heat auxiliary heat source two-medium heat exchanger. The air-heat pump working medium two-medium heat exchanger and the air-motor waste heat auxiliary heat source two-medium heat exchanger can be divided into tube-fin heat exchangers, stacked heat exchangers and parallel flow heat exchangers.

The tube-fin type two-medium heat exchanger described in the present invention is composed of a copper or aluminum round tube covered with aluminum fins. The inside of the round tube forms an auxiliary heat source for the waste heat of the motor or a medium passage for the heat pump working fluid. The outer surface of the round tube and the The fins constitute the low-temperature air heat source medium channel;

The stacked two-medium heat exchanger described in the present invention is formed by stacking multiple units, and each unit is formed by stacking two aluminum plates (in any form of plane or corrugated surface) of the same size and shape. The waste heat of the motor assists the heat source or the heat pump medium channel, and the low-temperature air heat source channel is formed by a serpentine heat dissipation aluminum belt between every two heat source channels.

The parallel-flow two-medium heat exchanger described in the present invention is composed of two cylindrical headers, a plurality of parallel aluminum inner rib flat tubes and aluminum inner rib flat tubes installed between the two cylindrical headers. It consists of corrugated cooling fins and connecting pipes installed between them. The inner ribbed aluminum flat tube is provided with a plurality of fins on the inner wall of the flat tube to form a plurality of microchannels. The interior of the cylindrical header and the microchannels inside the aluminum inner ribbed flat tube form the motor waste heat auxiliary heat source or the heat pump medium channel, and the outer surface of the aluminum inner ribbed flat tube and the corrugated heat dissipation fins form the low temperature air heat source channel.

The fin-round tube casing type heat exchange device with dual heat sources outside the vehicle described in the present invention is assembled by two round tubes with different diameters, that is, the inner tube with a small diameter is installed in the lumen of the outer tube with a large diameter. Among them, the outer wall of the large-diameter outer tube is covered with fins, and the lumen of the small-diameter inner tube forms an auxiliary heat source channel, the outer surface of the large-diameter outer tube and the fins form a low-temperature air heat source channel, and the inner tube and the outer tube form an auxiliary heat source channel. The annular space between the tubes constitutes the heat pump working medium channel.

In the present invention, the laminated sheet-tube casing type heat exchange device with dual heat sources outside the vehicle is composed of a plurality of sheet-tube casing units with serpentine heat-dissipating aluminum strips. Each unit consists of two aluminum plates (either flat or Any form of corrugated surface) Welded tubes of the same size and size are set together, the small tube forms an auxiliary heat source medium channel, the large and small tubes form a heat pump working medium channel, the outer surface of the large tube and the serpentine heat dissipation aluminum strip Constitute the low-temperature air heat source medium channel.

In the present invention, the parallel-flow flat tube casing type heat exchange device with dual heat sources outside the vehicle is composed of two cylindrical collector sleeves and multiple sets of parallel-arranged parallel-flow flat tube sleeves installed between the two cylindrical collector sleeves. Tube, parallel flow flat tube casing between the corrugated cooling fins and connecting pipes; the cylindrical collector sleeve is set together by two round tubes with different diameters, that is, the small diameter inner tube is worn on the In the lumen of the large-diameter outer tube, the lumen of the small-diameter inner tube forms an auxiliary heat source channel, and the annular space between the inner tube and the outer tube forms a heat pump working medium channel. The parallel flow flat tube casing is made of two aluminum flat tubes with the same shape and different cross-sectional areas, and the inner flat tube with a small cross-sectional area is inserted into the lumen of the outer flat tube with a large cross-sectional area . The inner flat tube is equipped with a plurality of ribs to form a plurality of microchannels and form an auxiliary heat source medium channel; the annular space between the inner and outer flat tubes is provided with a plurality of ribs to form a plurality of microchannels and form a Heat pump working medium channel; the outer surface of the outer flat tube and the corrugated cooling fins form a low-temperature air heat source medium channel. The beneficial effects of the present invention are as follows:

The present invention provides a composite heat source heat pump type electric vehicle heat pump air-conditioning system, which can significantly reduce the temperature of the air-conditioning system by setting up a compressor cooling and efficiency-enhancing gas mixing system, a vehicle motor waste heat recovery system, and a composite air-water dual heat source utilization device outside the vehicle. When the heat pump air conditioner operates at low temperature, the exhaust temperature of the compressor improves the reliability of the system operation, and at the same time greatly improves the heating capacity and efficiency of the air conditioning system, and reduces the power consumption of the electric vehicle air conditioner during heating in winter. The data obtained from the preliminary experimental research on a compound heat source heat pump type electric vehicle heat pump air-conditioning system provided by the present invention show that: under the ultra-low temperature heating condition when the outdoor temperature is -10°C, the exhaust temperature of the compressor is reduced to 70°C Below, the heating coefficient of the air-conditioning system is as high as 2.5 or more, and it can realize the uninterrupted heating of the air-water composite heat source heat pump in winter at an outdoor ultra-low temperature, and at the same time perform synchronous and efficient defrosting on the low-temperature air heat source side, which can be better solved There are three key technical problems that need to be solved urgently when the air conditioner of heat pump electric vehicles is running at low temperature, the exhaust temperature of the compressor is too high, the heating capacity is obviously insufficient, and the surface of the external low-temperature heat source heat exchanger is difficult to defrost. The invention has great significance for accelerating the popularization and application of electric vehicles, and provides air-conditioning technical support for the development of electric vehicles in northern regions.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Figure 2 is a tube-fin heat exchanger.

Figure 3 is a laminated heat exchanger.

FIG. 4 is a sectional view of FIG. 3 .

Figure 5 is a parallel flow heat exchanger.

FIG. 6 is a sectional view of FIG. 5 .

FIG. 7 is a top view of FIG. 5 .

Figure 8 is a fin-round tube casing type composite air-water dual heat source utilization device outside the vehicle.

Figure 9 is a composite air-water dual heat source utilization device outside the vehicle of the laminated sheet-tube-in-tube type.

FIG. 10 is a sectional view of FIG. 9 .

Figure 11 is a parallel-flow flat tube-in-pipe composite air-water dual heat source utilization device outside the vehicle.

FIG. 12 is a sectional view of FIG. 11 .

FIG. 13 is a top view of FIG. 11 .

Fig. 14 is a schematic diagram of the gas mixing principle of the present invention.

Fig. 15 is a structure diagram of the gas mixing port in the gas mixing device of the present invention.

Fig. 16 is a second structure diagram of the gas mixing port in the gas mixing device of the present invention.

Fig. 17 is a third structure diagram of the gas mixing port in the gas mixing device of the present invention.

Fig. 18 is a fourth structure diagram of the gas mixing port in the gas mixing device of the present invention.

Fig. 19 is a structural diagram of the motor waste water cooling device described in the present invention.

FIG. 20 is a side view of FIG. 19 .

Fig. 21, Fig. 22, Fig. 23, Fig. 24 and Fig. 25 are flow charts of various working modes of the present invention.

Serial numbers in the figure: 1 is the fully enclosed variable frequency air conditioner compressor for vehicles, 2-1 is the function control valve, 2-2 to 2-5 are the one-way valves, 2-6 is the mixed gas control valve, 2-7 is the mixed gas control valve. The air heat exchanger bypass valve, 2-8 is the defrosting bypass valve, 2-9 and 2-10 are the air-conditioning air duct control valves inside the car, 3 is the composite air-water dual heat source utilization device outside the car, 4 is Liquid storage dryer, 5-1 is the gas mixing throttle valve, 5-2 is the gas mixing heat exchanger, 5-3 is the gas mixing check valve, 6 is the low pressure throttle valve, 7 is the double heat exchange device in the car, 8 is the gas-liquid separator, 9-1 is the motor waste water cooling device, 9-2 is the motor cooling water pump, 9-3 to 9-5 is the motor waste heat circulation control valve, 9-6 is the motor waste heat radiator outside the vehicle , 9-7 is the waste heat radiator of the motor in the car, 10 is the fin, 11 is the serpentine heat dissipation aluminum strip, 12 is the cylindrical collector, 13 is the spacer, 14 is the inner pipe, 15 is the annular space, 16 is Outer pipe, 17 is a small-diameter cylindrical collector, 18 is a large-diameter cylindrical collector, 20 is a closed water jacket inner shell, 21 is a closed water jacket shell, 22 is a cooling water channel partition, 23 is the axial straight rib, 24 is the built-in air-cooling fan, 25 is the built-in air mixing hole of the compressor, 26 is the connecting channel of the built-in air mixing hole of the compressor, and 27 is connected with the other end of the connecting channel of the built-in air mixing hole of the compressor and fixed on the compressor shell The external quick joint on the body, 28 is the compressor shell, 29 is the motor, 30 is the static scroll body of the compressor, 31 is the movable scroll body of the compressor, 32 is the suction quick joint of the compressor, 33 is the compressor exhaust Gas quick connector.

Detailed ways

The present invention will be further described below in conjunction with embodiment (accompanying drawing), but does not limit the present invention.

As shown in Fig. 1, the composite air-water dual heat source heat pump type electric vehicle air conditioning system of the present invention is characterized in that: the air conditioning system includes a fully enclosed variable frequency air conditioner compressor 1 for vehicles driven by a DC motor, an external Composite gas-water dual heat source utilization device 3, double heat exchange device in the car 7, liquid storage dryer 4, gas-liquid separator 8, low-pressure throttle valve 6, compressor cooling and efficiency mixing system, power motor waste heat recovery system, system mode switching device, etc. The composite air-water dual heat source utilization device 3 outside the vehicle is an integrated structure; the double heat exchange device 7 inside the vehicle is a combined hierarchical heating device; the integrated composite gas-water dual heat source utilization device outside the vehicle is Any one of finned-round tube-in-tube heat exchanger, laminated tube-in-tube heat exchanger or parallel-flow flat tube-in-tube heat exchanger, and all have three media: heat pump working medium, motor waste heat auxiliary heat source and low-temperature air heat source aisle. The double heat exchange device inside the car is composed of an air-heat pump working fluid two-medium heat exchanger and an air-motor waste heat auxiliary heat source two-medium heat exchanger. The air-heat pump working medium two-medium heat exchanger and the air-motor waste heat auxiliary heat source two-medium heat exchanger can be divided into tube-fin heat exchangers, stacked heat exchangers and parallel flow heat exchangers. The system mode switching device consists of a function control valve 2-1, a gas mixing control valve 2-6, a gas mixing heat exchanger bypass valve 2-7, a defrosting bypass valve 2-8, first, second, third, Four one-way valves 2-2, 2-3, 2-4, 2-5, the first air-conditioning air duct control valve 2-9 and the second air-conditioning air duct control valve 2-10; Type air conditioner compressor is made of compressor housing 28, motor 29, fixed scroll body 30, movable scroll body 31 and cooling synergistic gas mixing system. The compressor housing 28 is provided with a compressor suction quick connector 32 and a compressor exhaust quick connector 33; the compressor cooling and synergistic gas mixing system is processed by the compressor's built-in cooling and synergistic gas mixing mechanism and the compressor's external gas mixing It is composed of a control device; the built-in cooling and efficiency mixing mechanism of the compressor is connected with the built-in mixing hole 25 of the compressor, the connecting channel 26 of the built-in mixing hole of the compressor, and the other end of the connecting channel of the built-in mixing hole of the compressor is fixed on the compressor shell The external quick connector 27 on the body is composed of three types: low-pressure gas mixing mechanism, medium-pressure gas mixing mechanism, and high-pressure gas mixing mechanism; the built-in gas mixing hole 25 of the compressor of the low-pressure gas mixing mechanism is set The casing part corresponding to the air chamber is connected to the suction pipe of the compressor through a quick three-way joint, and the built-in air mixing hole 25 of the compressor of the medium pressure air mixing mechanism is set in the fixed scroll body 30 of the compressor corresponding to the first compression chamber Part of the corresponding position, the built-in gas mixing hole 25 of the compressor of the high-pressure gas mixing mechanism is set at the corresponding position of the fixed scroll body 30 of the compressor and the corresponding part of the second compression chamber; the external gas mixing processing and control device of the compressor is composed of It is composed of mixed gas throttle valve 5-1, mixed gas heat exchanger 5-2, mixed gas check valve 5-3, and external connecting pipe of compressor mixed gas interface; The function control valve 2-1 and the corresponding connecting pipelines are respectively connected with the corresponding interfaces of the composite gas-water dual heat source utilization device 3 outside the vehicle, the double heat exchange device 7 inside the vehicle, and the gas-liquid separator 8; the gas-liquid separator 8 The outlet is connected to the suction port of the fully enclosed inverter air conditioner compressor 1 for vehicles; the other interface of the composite air-water dual heat source utilization device 3 outside the vehicle is connected to the outlet of the first one-way valve 2-2 and the second one-way valve 2-3 inlet, the outlet of the second one-way valve 2-3 is connected to the liquid storage drier 4 and the outlet of the fourth one-way valve 2-5, the outlet of the liquid storage drier 4 is respectively connected to the inlet and the mixing valve 2-6 of the gas mixing control valve. The inlet of the bypass valve 2-7 of the gas heat exchanger is connected to the first inlet of the gas mixer heat exchanger 5-2, and the outlet of the bypass valve 2-7 of the gas mixer heat exchanger is connected to the first inlet of the gas mixer heat exchanger 5-2. The outlet is connected to the inlet of low-pressure throttle valve 6 and the inlet of defrosting bypass valve 2-8, the outlet of low-pressure throttle valve 6 is connected to the inlet of the first one-way valve 2-2 and the inlet of the third one-way valve 2-4, and the defrosting bypass The outlet of valve 2-8 is connected to the inlet of the first one-way valve 2-2 and the inlet of the third one-way valve 2-4, and the outlet of the third one-way valve 2-4 is connected to the inlet of the double heat exchange device 7 in the car and the fourth one-way valve 2-5 inlet; the outlet of the mixed gas control valve 2-6 is connected to the inlet of the mixed gas throttle valve 5-1, and the outlet of the mixed gas throttle valve 5-1 is connected to the second inlet of the mixed gas heat exchanger 5-2, and the mixed gas heat exchange The second outlet of the device 5-2 is connected to the inlet of the air-mixing check valve 5-3, and the outlet of the air-mixing check valve 5-3 is connected to the air-mixing port of the fully enclosed frequency conversion air conditioner compressor for vehicles; the first air-conditioning air duct control valve 2-9 Installed at the air outlet of the air-conditioning duct in the car; the second air-conditioning duct control valve 2-10 is installed at the air inlet of the air-conditioning duct in the car; Heat source utilization device 3, motor waste water cooling device 9-1, motor cooling water pump 9-2, first air-motor waste heat auxiliary heat source two The medium heat exchanger 9-7, the second air-motor waste heat auxiliary heat source, the two-medium heat exchanger 9-6, the first motor waste heat cycle control valve 9-3, the second motor waste heat cycle control valve 9-4 and the third A waste heat recovery control device composed of a motor waste heat circulation control valve 9-5; wherein the outlet of the motor waste water cooling device 9-1 is connected to the inlet of the motor cooling water pump 9-2, and the outlet of the motor cooling water pump 9-2 is respectively connected to the first waste water The inlet of heat recovery control valve 9-3, the inlet of the second waste heat recovery control valve 9-4 and the inlet of the third waste heat recovery control valve 9-5, the outlet of the first waste heat recovery control valve 9-3 are connected to the air conditioner in the car The inlet of the first air-motor waste heat auxiliary heat source two-medium heat exchanger 9-7 installed in the air duct and on the side of the double heat exchange device 7 air outlet in the car, the first air-motor waste heat auxiliary heat source two-medium heat exchanger 9 The -7 outlet is connected to the motor waste water cooling device 9-1 inlet, the second waste heat recovery control valve 9-4 is connected to the corresponding interface of the composite air-water dual heat source utilization device 3 outside the vehicle, and the third waste heat recovery control valve The outlet 9-5 is connected to the inlet of the second air-motor waste heat auxiliary heat source two-medium heat exchanger 9-6, and the second air-motor waste heat auxiliary heat source two-medium heat exchanger 9-6 outlet is respectively connected to the composite air-water dual The corresponding interface of the heat source utilization device 3 and the inlet of the waste water cooling device 9-1 of the motor.

The dual heat exchange source device 7 inside the car is installed in the air duct inside the car by combining the first air-motor waste heat auxiliary heat source two-medium heat exchanger 9-7 and the air-heat pump working fluid two-medium heat exchanger. An air-motor waste heat auxiliary heat source two-medium heat exchanger 9-7 is placed on the side of the air outlet of the air-heat pump working fluid two-medium heat exchanger; the first air-conditioning air duct control valve 2-9 is installed on the air-conditioning air duct in the car At the air outlet (can realize the mutual switching between the defrost/fog air outlet and the air outlet in the car); the second air-conditioning duct control valve 2-10 is installed at the air inlet of the air-conditioning duct in the car (can realize the Mutual switching of external air intake).

The power motor waste heat recovery system described in the present invention consists of an external composite air-water dual heat source utilization device 3, a motor waste water cooling device 9-1, a motor cooling water pump 9-2, the first, second and third motor waste heat Circulation control valves 9-3, 9-4, 9-5, first and second air-motor waste heat auxiliary heat sources, two-medium heat exchangers 9-7, 9-6 and connecting pipes.

As shown in Figure 2, the tube-fin two-medium heat exchanger is composed of a copper or aluminum round tube covered with aluminum fins 10, the inside of the round tube forms an auxiliary heat source or heat pump medium channel, and the outer surface of the round tube The low-temperature air heat source medium channel is formed with the fins.

As shown in Figure 3 and Figure 4, the stacked two-medium heat exchanger is formed by stacking multiple units, and each unit is composed of two aluminum plates of the same size and shape (any form of flat or corrugated surface) ) are stacked together to form an auxiliary heat source or heat pump working medium channel, and a serpentine heat dissipation aluminum belt 11 forms a low-temperature air heat source medium channel between every two defrosting auxiliary heat sources or heat pump working medium channels.

As shown in Fig. 5, Fig. 6 and Fig. 7, the parallel-flow two-medium heat exchanger is composed of two cylindrical headers 12 and a plurality of parallel aluminum inner tubes installed between the two cylindrical headers 12. It consists of ribbed flat tubes, corrugated heat dissipation fins installed between aluminum inner ribbed flat tubes and connecting tubes. The inner ribbed aluminum flat tube is provided with a plurality of fins on the inner wall of the flat tube to form a plurality of microchannels. The interior of the cylindrical header and the microchannels inside the aluminum inner ribbed flat tube constitute the defrosting auxiliary heat source or heat pump medium channel, and the outer surface of the aluminum inner ribbed flat tube and the corrugated heat dissipation fins form the low temperature air heat source medium channel.

As shown in Figure 8, the finned-round tube casing type composite air-water dual heat source utilization device outside the vehicle is set together by two round tubes with different diameters, that is, the inner tube with a small diameter is worn on the large In the lumen of the outer tube with a large diameter, the outer wall of the outer tube with a large diameter is covered with fins, and the lumen of the inner tube with a small diameter forms an auxiliary heat source channel, and the outer surface of the outer tube with a large diameter and the fins form a low-temperature air The heat source channel, the annular space between the inner tube and the outer tube constitute the heat pump working medium channel.

As shown in Fig. 9 and Fig. 10, the laminated sheet-tube sleeve-type composite air-water dual heat source utilization device outside the vehicle is formed by stacking a plurality of sheet-tube sleeve units with serpentine heat-dissipating aluminum strips. The first unit consists of two aluminum plates (any form of flat or corrugated surface) welded together with the same shape and size of the tube set together, the auxiliary heat source medium channel is formed in the small tube, and the heat pump working fluid channel is formed between the large and small tubes. The outer surface of the large tube and the serpentine heat-dissipating aluminum strip form a low-temperature air heat source medium channel.

As shown in Fig. 11, Fig. 12 and Fig. 13, the parallel-flow flat tube casing type external composite gas-water dual heat source utilization device consists of two cylindrical collecting sleeves and two cylindrical collecting sleeves. It is composed of multiple groups of parallel flow flat tube casings installed in parallel, corrugated cooling fins and connecting pipes between the parallel flow flat tube casings; the cylindrical collector casing is composed of two round tubes with different diameters Set together, that is, the small-diameter inner tube is worn in the lumen of the large-diameter outer tube, the lumen of the small-diameter inner tube forms the auxiliary heat source channel, and the annular space between the inner tube and the outer tube constitutes the heat pump working fluid aisle. The parallel flow flat tube casing is made of two aluminum flat tubes with the same shape and different cross-sectional areas, and the inner flat tube with a small cross-sectional area is inserted into the lumen of the outer flat tube with a large cross-sectional area . The inner flat tube is equipped with a plurality of ribs to form a plurality of microchannels and form an auxiliary heat source medium channel; the annular space between the inner and outer flat tubes is provided with a plurality of ribs to form a plurality of microchannels and form a Heat pump working medium channel; the outer surface of the outer flat tube and the corrugated cooling fins form a low-temperature air heat source medium channel.

Mixed gas cycle (as shown in Figure 14), the refrigerant liquid flows out from the condenser and is divided into two paths, one of which enters the main cycle, passes through the mixed gas heat exchanger for heat exchange, enters the evaporator after passing through the low-pressure throttle valve, and is finally The suction port of the compressor is inhaled; the other path enters the mixed gas cycle, passes through the mixed gas throttle valve and enters the mixed gas heat exchanger for heat exchange, cools the main cycle refrigerant and becomes gaseous, and finally enters the compressor through the compressor mixed gas interface. The principle is: add a certain amount of refrigerant gas of a certain intermediate pressure to a certain intermediate position or suction position of the compressor through the gas mixing circuit, so as to reduce the discharge temperature of the compressor from T _e ' to T _e purpose, and can increase the displacement of the compressor to a certain extent, thereby increasing the total heating capacity of the heat pump cycle; at the same time, the high-pressure refrigerant liquid passing through the main circuit of the gas-mixing heat exchanger is cooled from T _f to T _g , which increases the Absorb heat from the outdoor low-temperature air heat source, thereby improving the operating efficiency and reliability of the heat pump system.

As shown in Fig. 15, Fig. 16, Fig. 17 and Fig. 18, the fully enclosed variable frequency air conditioner compressor for vehicles in the present invention consists of a compressor housing 28, a motor 29, a fixed scroll body 30, and a movable scroll body 31. And cooling and synergistic air mixing system. The compressor housing 28 is provided with a compressor suction quick joint 32 and a compressor discharge quick joint 33 . The air-mixing system for cooling and increasing efficiency of the compressor is composed of a built-in air-cooling and increasing-efficiency air-mixing mechanism of the compressor and an external air-mixing processing and control device of the compressor; The built-in gas mixing hole connecting channel 26 and the external quick joint 27 connected to the other end of the compressor built-in gas mixing hole connecting channel and fixed on the compressor shell are divided into low-pressure gas mixing mechanism, medium-pressure gas mixing mechanism, high-pressure gas mixing mechanism There are three types of gas mixing mechanisms; the low-pressure gas mixing (as shown in Figures 15 and 16), the heat pump working fluid enters the suction chamber of the compressor to mix with superheated steam. The air mixing hole of the compressor can be set on the suction pipe of the compressor or connected with the suction pipe of the compressor through a quick three-way joint, so that the low-pressure mixed air is mixed with the suction air of the compressor first and then enters the suction pipe of the compressor through the suction port of the compressor. air cavity. In the medium-pressure mixed gas (as shown in Figure 17), the heat pump working fluid enters the intermediate pressure chamber formed by the movable and static scroll of the compressor to mix with the superheated steam that has been compressed to the intermediate pressure. The built-in air mixing hole 25 of the compressor is set at the corresponding position of the fixed scroll body 30 of the compressor and the corresponding part of the first compression chamber, and connects the built-in air mixing hole 26 of the compressor with the external quick opening fixed on the casing of the compressor discharge chamber. Connector 27 is connected. For the high-pressure gas mixture (as shown in Figure 18), the heat pump working fluid enters the high-pressure chamber formed by the movable and static scroll of the compressor to mix with the superheated steam that has been compressed to a high pressure. The built-in air mixing hole 25 of the compressor is opened at the corresponding position of the fixed scroll body 30 of the compressor and the corresponding part of the second compression chamber, and the built-in air mixing hole of the compressor connects the passage 26 with the external fast valve fixed on the casing of the compressor discharge chamber. Connector 27 is connected. The external gas mixing processing and control device of the compressor is composed of a gas mixing throttle valve 5-1, a gas mixing heat exchanger 5-2, a gas mixing check valve 5-3, and an external connecting pipe of the gas mixing interface of the compressor;

The air-mixing throttle valve 5-1 in the present invention is any throttling and pressure-reducing device in an electronic expansion valve, a thermal expansion valve, a capillary tube or a short throttle tube; the air-mixing heat exchanger 5-2 is a different Any one of the tube-in-diameter, spacer plate, box-and-tube or shell-and-tube heat exchangers.

The fully enclosed variable frequency air conditioner compressor 1 for vehicles driven by a DC motor described in the present invention is any one of piston type, scroll type, and triangular rotor type compressors, and the fully enclosed variable frequency air conditioner compressor 1 for vehicles is The air conditioner compressor 1 and the DC motor are enclosed in the same airtight housing.

As shown in Figure 19 and Figure 20, the motor waste water cooling device 9-1 includes a closed water jacket inner shell 20 as a motor shell, a closed water jacket outer shell 21 and a closed water jacket inner shell connected between The cooling water channel partition 22 is provided with a number of axial straight ribs 23 forming the cooling air passage on the inner wall of the closed water jacket inner shell 20, and a DC motor is installed in the ring cavity formed by the inner end faces of the axial straight ribs 23. A built-in air-cooling fan 24 is installed on one shaft end of the motor shaft, and the axial straight rib 23 and the built-in air-cooling fan 24 jointly constitute a motor built-in air-cooling mechanism.

The present invention will describe each working mode respectively below in conjunction with Fig. 21, 22, 23, 24, 25:

As shown in Figure 21, when the air-conditioning system is in cooling mode, the refrigerant is compressed into high-temperature and high-pressure refrigerant vapor through the fully enclosed variable-frequency air-conditioning compressor 1 for the vehicle, and the vapor enters the composite air conditioner outside the vehicle through the function control valve 2-1. The gas-water dual heat source utilization device 3 heat pump working medium channel dissipates heat and becomes a high-temperature and high-pressure liquid refrigerant, and the air temperature rises and is discharged outside. The high-temperature and high-pressure liquid refrigerant passes through the drier filter 4 , and flows into the low-pressure throttle valve 6 after being dried and filtered. After throttling by the low-pressure throttle valve, the state changes sharply and becomes a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant evaporates in the air-heat pump working fluid two-medium heat exchanger of the double heat exchange device 7 in the car, and the low-temperature and low-pressure liquid refrigerant becomes a low-temperature and low-pressure gaseous refrigerant, so that the air temperature is lowered and then sent to the interior. The low-temperature and low-pressure gaseous refrigerant passes through the functional control valve 2-1, and then returns to the fully-enclosed variable-frequency air-conditioning compressor 1 for vehicles. This repeated cycle realizes the refrigeration function of the air conditioning system. At this time, the bypass valve 2-7 of the mixed gas heat exchanger is opened; the mixed gas control valve 2-6, the defrosting bypass valve 2-8 and the first and second motor waste heat cycle control valves 9-3 and 9-4 are closed , the third motor waste heat circulation control valve 9-5 is opened. After the motor waste heat cooling water flows out from the motor waste water cooling device 9-1, it passes through the motor cooling water pump 9-2, the third motor waste heat circulation control valve 9-5, and the second air-motor waste heat auxiliary heat source two-medium heat exchanger 9 -6, get back to motor waste water cooling device 9-1 again.

As shown in Figure 22, when the air-conditioning system is in the normal heating mode, the refrigerant is compressed into high-temperature and high-pressure refrigerant vapor through the fully enclosed variable-frequency air-conditioning compressor 1 for vehicles, and the vapor enters the vehicle through the function control valve 2-1 The working medium channel of the double heat exchange device 7 heats up and turns into a high-temperature and high-pressure liquid refrigerant, thereby increasing the air temperature. The high-temperature and high-pressure liquid refrigerant passes through the drier filter 4 , and flows into the low-pressure throttle valve 6 after being dried and filtered. After throttling by the low-pressure throttle valve, the state changes sharply and becomes a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant is evaporated in the composite air-water dual heat source utilization device 3 outside the vehicle, and the low-temperature and low-pressure liquid refrigerant becomes a low-temperature and low-pressure gaseous refrigerant. The low-temperature and low-pressure gaseous refrigerant passes through the functional control valve 2-1, and then returns to the fully-enclosed variable-frequency air-conditioning compressor 1 for vehicles. This repeated cycle realizes the heating function of the air conditioning system. At this time, the air mixing control valve 2-6 and the defrosting bypass valve 2-8 are closed, the air mixing heat exchanger bypass valve 2-7, the first and second motor waste heat cycle control valves 9-3 and 9-4 are opened , The third motor waste heat circulation control valve 9-5 is closed. The motor waste heat cooling water flows out from the motor waste water cooling device 9-1 and passes through the motor cooling water pump 9-2. The first air-motor waste heat auxiliary heat source two-medium heat exchanger 9-7 returns to the motor waste water cooling device 9-1; Get back to motor residual hot water cooling device 9-1 after water double heat source utilization device 3.

As shown in Figure 23, when the outdoor temperature is an ultra-low ambient temperature, the air-conditioning system is in the heating air-mixing mode: the air-mixing control valve 2-6 is opened. The refrigerant is discharged through the exhaust port of the fully enclosed inverter air conditioner compressor 1 for vehicles, and then passes through the double heat exchange device 7 in the vehicle, the check valve 2-5, the liquid storage dryer 4, the mixed gas heat exchanger 5-2, After the low-pressure throttle valve 6, the one-way valve 2-2, the composite gas-water dual heat source utilization device 3 outside the vehicle, and the gas-liquid separator 8, it is inhaled from the suction port by the fully-enclosed variable-frequency air-conditioning compressor 1 for vehicles; The other refrigerant is discharged through the exhaust port of the fully enclosed inverter air conditioner compressor 1 for vehicles, and then passes through the double heat exchange device 7 in the vehicle, the one-way valve 2-5, the liquid storage dryer 4, and the mixed gas control valve 2-6 , air-mixing throttle valve 5-1, air-mixing heat exchanger 5-2, and air-mixing check valve 5-3, enter the fully-enclosed inverter-type air-conditioning compressor for vehicles from the air-mixing port of the air-conditioning compressor 1. At this time, the bypass valve 2-7 and the defrosting bypass valve 2-8 of the air-mixing heat exchanger are closed, the waste heat circulation control valves 9-3 and 9-4 of the first and second motors are opened, and the waste heat circulation control valve of the third motor 9-5 off. The motor waste heat cooling water flows out from the motor waste water cooling device 9-1 and passes through the motor cooling water pump 9-2. The first air-motor waste heat auxiliary heat source two-medium heat exchanger 9-7 returns to the motor waste water cooling device 9-1; Get back to motor residual hot water cooling device 9-1 after water double heat source utilization device 3.

As shown in Figure 24, when the air-conditioning system is in the window defrosting/defogging mode, the refrigerant is discharged through the exhaust port of the fully enclosed variable-frequency air-conditioning compressor 1 for the vehicle, and then passes through the composite air-water dual heat source outside the vehicle in turn. Utilization device 3, one-way valve 2-3, liquid storage drier 4, air-mixing heat exchanger bypass valve 2-7, low-pressure throttle valve 6, one-way valve 2-4, double heat exchange device in the vehicle 7, After the gas-liquid separator 8, it is inhaled from the suction port by the fully enclosed inverter air conditioner compressor 1 for vehicles. At this time, the air mixing control valve 2-6 is closed; the air mixing heat exchanger bypass valve 2-7, the defrosting bypass valve 2-8, the first and second motor waste heat cycle control valves 9-3 and 9-4 are opened, Motor waste heat circulation control valve 9-5 is closed. The motor waste heat cooling water flows out from the motor waste water cooling device 9-1 and passes through the motor cooling water pump 9-2. The first air-motor waste heat auxiliary heat source two-medium heat exchanger 9-7 returns to the motor waste water cooling device 9-1; Get back to motor residual hot water cooling device 9-1 after water double heat source utilization device 3. By adjusting the air conditioner control valve 2-9 in the car, the hot air is sprayed onto the car window to defrost/defog the car window.

As shown in Figure 25, when the air-conditioning system is in the defrosting of the composite air-water dual heat source utilization device outside the vehicle, the refrigerant is compressed into a high-temperature and high-pressure refrigerant vapor by the fully enclosed variable-frequency air-conditioning compressor 1 for the vehicle, and the vapor is passed through The function control valve 2-1 enters the double heat exchange device 7 heat pump working fluid channels in the car to dissipate heat and become a high-temperature and high-pressure liquid refrigerant, thereby increasing the air temperature. The operation of the auxiliary heat source further increases the air temperature. The high-temperature and high-pressure liquid refrigerant passes through the drier filter 4 , and flows into the low-pressure throttle valve 6 after being dried and filtered. After throttling by the low-pressure throttle valve, the state changes sharply and becomes a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant is evaporated in the composite air-water dual heat source utilization device 3 outside the vehicle, and the low-temperature and low-pressure liquid refrigerant becomes a low-temperature and low-pressure gaseous refrigerant. The low-temperature and low-pressure gaseous refrigerant passes through the functional control valve 2-1, and then returns to the fully-enclosed variable-frequency air-conditioning compressor 1 for vehicles. At this time, the air mixing control valve 2-6 is closed; the air mixing heat exchanger bypass valve 2-7, the defrosting bypass valve 2-8, the first and second motor waste heat cycle control valves 9-3 and 9-4 are opened, The third motor waste heat circulation control valve 9-5 is closed. The motor waste heat cooling water flows out from the motor waste water cooling device 9-1 and passes through the motor cooling water pump 9-2. The first air-motor waste heat auxiliary heat source two-medium heat exchanger 9-7 returns to the motor waste water cooling device 9-1; Get back to motor residual hot water cooling device 9-1 after water double heat source utilization device 3. According to the structural characteristics of the integrated exterior composite air-water dual heat source utilization device 3, the auxiliary heat source can firstly heat the refrigerant to increase its temperature, and then further heat the low-temperature air to achieve the purpose of defrosting.

Claims (8)

1. combined gas-water double heat source heat pump type electromobile air-conditioning system is characterized in that: described air-conditioning system comprises two heat-exchanger rigs (7) in the two thermal source use devices (3) of the outer combined type air-water of automobile-used totally-enclosed frequency conversion type air conditioning compressor (1), car that driven by direct current generator, car, liquid storage dryer (4), gas-liquid separator (8), low pressure choke valve (6), the mixed gas of cooling compressor synergy system, power motor residual neat recovering system, system model switching device shifter etc., the two thermal source use devices (3) of the outer combined type air-water of described car are the integral type structure, in car, two heat-exchanger rigs (7) are knockdown grading heating device, described system model switching device shifter is comprised of function control valve (2-1), mixed gas control valve (2-6), mixed gas heat exchanger bypass valve (2-7), defrost bypass valve (2-8), first, second, third and fourth check valve (2-2,2-3,2-4,2-5), the first air-conditioning duct control valve (2-9) and the second air-conditioning duct control valve (2-10), described automobile-used totally-enclosed frequency conversion type air conditioning compressor is made of compressor housing (28), motor (29), static vortex (30), moving vortex (31) and the mixed gas of cooling synergy system, compressor housing (28) is provided with compressor air suction snap joint (32) and compressor air-discharging snap joint (33), the mixed gas of described cooling compressor synergy system is comprised of the built-in cooling synergy of compressor air mixing machine structure and the outside mixed gas disposal of compressor and control device, the built-in cooling synergy of described compressor air mixing machine structure is by the built-in gas mixed hole of compressor (25), the built-in gas mixed hole interface channel of compressor (26) and be connected with the built-in gas mixed hole interface channel of the compressor other end and the external snap joint (27) that is fixed on compressor housing forms, and is divided into low pressure air mixing machine structure, medium-pressure mechanism, three kinds of forms of high pressure air mixing machine structure, the built-in gas mixed hole of compressor (25) of described low pressure air mixing machine structure is opened in housing part corresponding to compressor air suction chamber or is connected with compressor suction duct by the fast three-way joint, the built-in gas mixed hole of compressor (25) of described medium-pressure mechanism is opened in the relevant position of compressor static vortex (30) and the first compression chamber corresponding part, the built-in gas mixed hole of compressor (25) of described high pressure air mixing machine structure is opened in the relevant position of compressor static vortex (30) and the second compression chamber corresponding part, the outside mixed gas disposal of described compressor and control device are comprised of mixed gas choke valve (5-1), mixed gas heat exchanger (5-2), mixed gas check-valves (5-3), the mixed gas interface external connecting pipe of compressor, described automobile-used totally-enclosed frequency conversion type air conditioning compressor (1) outlet is connected with the two thermal source use devices (3) of the outer combined type air-water of car, the interior two heat-exchanger rigs (7) of car, gas-liquid separator (8) the corresponding interface respectively by function control valve (2-1) and corresponding connecting line, described gas-liquid separator (8) outlet access automobile-used totally-enclosed frequency conversion type air conditioning compressor (1) air entry, two another interfaces of thermal source use device (3) of the outer combined type air-water of described car connect the first check valve (2-2) outlet and the second check valve (2-3) entrance, the second check valve (2-3) outlet connects liquid storage dryer (4) and the 4th check valve (2-5) outlet, liquid storage dryer (4) outlet respectively with the entrance of mixed gas control valve (2-6), the first entrance of the entrance of mixed gas heat exchanger bypass valve (2-7) and mixed gas heat exchanger (5-2) connects, mixed gas heat exchanger bypass valve (2-7) outlet and mixed gas heat exchanger (5-2) the first outlet connect low pressure choke valve (6) entrance and defrost bypass valve (2-8) entrance, low pressure choke valve (6) outlet connects the first check valve (2-2) entrance and the 3rd check valve (2-4) entrance, defrost bypass valve (2-8) outlet connects the first check valve (2-2) entrance and the 3rd check valve (2-4) entrance, the 3rd check valve (2-4) outlet connects two heat-exchanger rig (7) entrances and the 4th check valve (2-5) entrance in car, described mixed gas control valve (2-6) outlet connects mixed gas choke valve (5-1) entrance, mixed gas choke valve (5-1) outlet connects mixed gas heat exchanger (5-2) the second entrance, mixed gas heat exchanger (5-2) the second outlet connects mixed gas check-valves (5-3) entrance, and mixed gas check-valves (5-3) outlet connects the mixed gas port of automobile-used totally-enclosed frequency conversion type air conditioning compressor, the first air-conditioning duct control valve (2-9) is arranged on the air outlet place of air-conditioning duct in car, the second air-conditioning duct control valve (2-10) is arranged on the air inlet place of air-conditioning duct in car, described power motor residual neat recovering system comprises the two thermal source use devices (3) of the outer combined type air-water of car, the waste heat water-cooled radiator cooler of motor (9-1), motor cooling water pump (9-2), the first air-motor waste heat auxiliary thermal source two media heat exchangers (9-7), the second air-motor waste heat auxiliary thermal source two media heat exchangers (9-6), by the first motor waste heat circulation control valve (9-3), the waste heat recovery control device that the second motor waste heat circulation control valve (9-4) and the 3rd motor waste heat circulation control valve (9-5) consist of, the outlet of the waste heat water-cooled radiator cooler of wherein said motor (9-1) connects motor cooling water pump (9-2) import, motor cooling water pump (9-2) outlet connects respectively the first motor waste heat circulation control valve (9-3) import, the second motor waste heat circulation control valve (9-4) import and the 3rd motor waste heat circulation control valve (9-5) import, the first motor waste heat circulation control valve (9-3) outlet connects the import of the first air of being arranged in car in air-conditioning duct and being arranged on two heat-exchanger rig (7) air outlet one sides in car-motor waste heat auxiliary thermal source two media heat exchangers (9-7), the first air-motor waste heat auxiliary thermal source two media heat exchangers (9-7) outlet connects the waste heat water-cooled radiator cooler of motor (9-1) import, the second motor waste heat circulation control valve (9-4) outlet connects the corresponding interface of the two thermal source use devices (3) of the outer combined type air-water of car, the 3rd motor waste heat circulation control valve (9-5) outlet connects the second air-motor waste heat auxiliary thermal source two media heat exchangers (9-6) import, the second air-motor waste heat auxiliary thermal source two media heat exchangers (9-6) outlet connects respectively two thermal source use device (3) the corresponding interface of the outer combined type air-water of car and the waste heat water-cooled radiator cooler of motor (9-1) import.

2. combined gas-water double heat source heat pump type electromobile air-conditioning system according to claim 1, it is characterized in that: the waste heat water-cooled radiator cooler of described motor (9-1) comprises the closed water jacket inner casing (20) as motor housing, closed water jacket shell (21) and be connected to cooling water channel dividing plate (22) between closed water jacket inside and outside shell, be provided with the some axial direct ribs (23) that consist of cooling air channel on closed water jacket inner casing (20) inwall, direct current generator is installed in the ring cavity that is consisted of by some axial direct ribs (23) inner face, an axle head at motor shaft is equipped with built-in air-cooling fan (24), and jointly consist of electric machine built-in air cooling mechanism by axial direct rib (23) and built-in air-cooling fan (24).

3. combined gas-water double heat source heat pump type electromobile air-conditioning system according to claim 1, it is characterized in that: the described automobile-used totally-enclosed frequency conversion type air conditioning compressor (1) that is driven by direct current generator is any one in piston type, vortex, triangle rotor type compressor, and described automobile-used totally-enclosed frequency conversion type air conditioning compressor and direct current generator are enclosed in same closed shell.

4. combined gas-water double heat source heat pump type electromobile air-conditioning system according to claim 1 is characterized in that: the two thermal source use devices (3) of the outer combined type air-water of described car are the integral type structure; In car, two heat-exchanger rigs (7) are knockdown grading heating device; The two thermal source use devices of the outer combined type air-water of described integral in-vehicle are any one in fin-pipe bushing type, laminates pipe box tubular type or parallel stream flat pipe double pipe heat exchanger, and all have heat pump fluid, motor waste heat auxiliary thermal source and three medium channels of Cryogenic air thermal source.

5. combined gas-water double heat source heat pump type electromobile air-conditioning system according to claim 4, it is characterized in that: the two thermal source use devices of the outer combined type air-water of described fin-pipe bushing type car are set in together by the pipe of two different tube diameters, be that pipe with small pipe diameter inner tube (14) is installed in the tube chamber of Large Diameter Pipeline outer tube (16), the outer wall cover of Large Diameter Pipeline outer tube has fin, and consist of the auxiliary thermal source passage by the tube chamber of pipe with small pipe diameter inner tube, the outer surface of Large Diameter Pipeline outer tube and fin consist of Cryogenic air thermal source passage, annular space between inner tube and outer tube (15) consists of the heat pump fluid passage.

6. combined gas-water double heat source heat pump type electromobile air-conditioning system according to claim 4, it is characterized in that: the two thermal source use devices of the outer combined type air-water of described laminates pipe box tubular type car are that the sheet pipe-in-pipe unit by the snakelike heat radiation aluminium strip of a plurality of tyres is laminated, each unit is fitted together by the identical big or small slice pipe box of shape that the aluminium sheet of two planes or corrugated surface is welded into, form the auxiliary thermal source medium channel in the small pieces pipe, form the heat pump fluid passage between the big or small slice pipe, large stretch of tube outer surface and snakelike heat radiation aluminium strip consist of Cryogenic air heat source medium passage.

7. combined gas-water double heat source heat pump type electromobile air-conditioning system according to claim 4 is characterized in that: the two thermal source use devices of the outer combined type air-water of described parallel stream flat pipe bushing type car are comprised of many groups of the parallel stream flat pipe-in-pipe that are arranged in parallel, corrugated heat radiation fin and the tube connectors between the parallel stream flat pipe-in-pipe installing between two cylinder afflux sleeve pipes, two cylinder afflux sleeve pipes; Described cylinder afflux sleeve pipe is set in together by the pipe of two different tube diameters, be that the pipe with small pipe diameter inner tube is installed in the tube chamber of Large Diameter Pipeline outer tube, the annular space that the tube chamber of pipe with small pipe diameter inner tube consists of between auxiliary thermal source passage, inner tube and outer tube consists of the heat pump fluid passage; Described parallel stream flat pipe-in-pipe is set in together by two aluminium flats that shape is identical, cross-sectional area is different, and the interior flat tube that cross-sectional area is little is installed in the tube chamber of the large outer flat tube of cross-sectional area; A plurality of fins are equipped with in wherein said interior flat tube inside, consist of a plurality of microchannels, and form the auxiliary thermal source medium channel; Ring-like space between inside and outside flat tube is provided with a plurality of fins, consists of a plurality of microchannels, and forms the heat pump fluid passage; Outer flat tube outer surface and corrugated heat radiation fin form Cryogenic air heat source medium passage.

8. combined gas-water double heat source heat pump type electromobile air-conditioning system according to claim 4, it is characterized in that: two heat-exchanger rigs (7) are arranged in car in the air channel by air-motor waste heat auxiliary thermal source two media heat exchangers and the two media heat exchangers combinations of air-heat pump fluid in described car, and combination is that air-motor waste heat auxiliary thermal source two media heat exchangers are placed in air-heat pump fluid two media heat exchanger air outlet one sides; Described air-motor waste heat auxiliary thermal source two media heat exchangers and air-heat pump fluid two media heat exchangers are any one version in fin-tube type, stacked or parallel flow heat exchanger.

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