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Air conditioner system and control method thereof

An air-conditioning system and control method technology, applied in air handling equipment, heating/cooling equipment, transportation and packaging, etc., can solve problems such as low refrigeration capacity, reduce throttling loss, improve safety, and have good low-temperature heating performance Effect

Active Publication Date: 2017-09-19
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the automobile air-conditioning system in the prior art has low cooling capacity when the ambient temperature is high, thereby providing an air-conditioning system and its control method

Method used

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  • Air conditioner system and control method thereof
  • Air conditioner system and control method thereof
  • Air conditioner system and control method thereof

Examples

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Embodiment 1

[0041] Such as Figure 1-7 As shown, the present invention provides an air-conditioning system, which includes a compressor 1, an outdoor heat exchanger 2, an indoor heat exchanger 3, and is also arranged between the outdoor heat exchanger 2 and the indoor heat exchanger 3 There is an ejector 4, and a gas-liquid separator 5 is also provided between the ejector 4 and the indoor heat exchanger 3, and the liquid outlet 53 of the gas-liquid separator 5 is connected to the indoor heat exchanger 3. One end. The gas outlet 52 of the gas-liquid separator 5 of the present invention is preferably connected to the suction port end of the compressor 1 to perform gas-liquid separation of the refrigerant entering the compressor and prevent the liquid refrigerant from entering the compressor. Liquid strike.

[0042] By setting the ejector, the refrigerant can be ejected to form an injection cycle, increase its speed and pressure, and combine the gas-liquid separator to inject the refrigerant i...

Embodiment 2

[0053] This embodiment is a further improvement made on the basis of embodiment 1. Preferably, it also includes a four-way valve 8, the four connecting ends of which are respectively connected to the gas-liquid separator 5 The liquid outlet 53, the indoor heat exchanger 3, the outdoor heat exchanger 2 and the discharge end of the compressor 1. This system uses a four-way valve to switch between cooling and heating, which can meet the requirements of pure electric vehicles for cooling and heating at the same time; and can meet the use environment from extremely low temperatures such as -30°C, and there is no need to install electric auxiliary heating Perform auxiliary heating.

[0054] Preferably, a third expansion valve 15 (preferably an electronic expansion valve) is further provided on the pipeline between the four-way valve 8 and the indoor heat exchanger 3, and the third expansion valve 15 is also A fourth solenoid valve 16 is provided in parallel. By installing the expansi...

Embodiment 3

[0056] This embodiment is a further improvement made on the basis of Embodiment 1, and is an alternative embodiment of Embodiment 2. Preferably, it further includes a three-way valve 21, the three connecting ends of which are respectively Connected to the liquid outlet 53 of the gas-liquid separator 5, the outdoor heat exchanger 2 and the discharge end of the compressor 1;

[0057] And a sixth solenoid valve 22 is also provided between the gas-liquid separator 5 and the three-way valve 21, and a branch is also provided between the gas-liquid separator 5 and the sixth solenoid valve 22 There is a second branch 23, the second branch 23 is connected to the outdoor heat exchanger 2, and a seventh solenoid valve 24 is provided on the second branch 23.

[0058] This system uses a three-way valve to switch between cooling and heating. It is an effective alternative to the structure of the four-way valve. It can also meet the cooling and heating requirements of pure electric vehicles at th...

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Abstract

The invention provides an air conditioner system and a control method thereof. The air conditioner system comprises a compressor (1), an outdoor heat exchanger (2) and an indoor heat exchanger (3); an ejector (4) is further arranged between the outdoor heat exchanger (2) and the indoor heat exchanger (3); a gas-liquid separator (5) is further arranged between the ejector (4) and the indoor heat exchanger (3); and a liquid outlet (53) of the gas-liquid separator (5) is connected to the indoor heat exchanger (3). A refrigerant ejected out by the ejector is ejected into the gas-liquid separator to be subjected to gas-liquid separating, separated gas enters the compressor, and separated liquid enters the indoor heat exchanger, so that the dryness of the refrigerant entering the evaporator is effectively reduced, the heat exchanging efficiency of the evaporator is effectively improved, and the refrigeration capacity and refrigeration efficiency especially under the high temperature environment are improved.

Description

Technical field [0001] The invention belongs to the technical field of air conditioning, and specifically relates to an air conditioning system and a control method thereof. Background technique [0002] At present, the space of pure electric vehicles is limited, and the air conditioner is required to have a compact structure. The performance of the air conditioner directly affects the mileage of the electric vehicle; therefore, improving the efficiency of the air conditioner is of great significance to the mileage of the electric vehicle. With the requirements of environmental protection regulations for automotive refrigerants, R744 (ie CO2) refrigerants are listed as future automotive air conditioners due to their high working pressure, high heat release temperature, non-flammable, excellent low-temperature heating performance, low cost, and stable chemical properties. Important alternative refrigerant. [0003] Because of the low critical temperature of the CO2 working fluid, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/00B60H1/32
CPCB60H1/00278B60H1/00392B60H1/00485B60H1/3213
Inventor 赵桓沈军梁尤轩罗祖分
Owner GREE ELECTRIC APPLIANCES INC
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