Automobile air conditioner system and control device and method thereof

Abstract

The invention provides an automobile air conditioner system and a control device and method of the automobile air conditioner system. The system comprises a compressor, a vehicle exterior condenser, a first restricting element, a three-way valve, a first two-way valve, a second two-way valve, a vehicle interior condenser and a vehicle interior evaporator. An outlet of the compressor is connected with an inlet of the three-way valve. A first outlet of the three-way valve, the vehicle exterior condenser and the first two-way valve are connected through a first three-way pipe. An inlet of the compressor, the vehicle interior evaporator and the first two-way valve are connected through a second three-way pipe. A second outlet of the three-way valve is connected with the vehicle interior condenser. The first restricting element, the vehicle interior condenser and the second two-way valve are connected through a third three-way pipe. The first restricting element is connected with the vehicle exterior condenser. The second two-way valve is connected with the vehicle interior evaporator. According to the scheme, refrigeration, heating, dehumidification, defrosting and other modes are achieved through switching between the three-way valve and the two-way valve, two heat exchangers in a vehicle are independently used in refrigeration and heating modes, only one restricting element is used, and the element utilization rate is high.

Description

technical field [0001] The invention relates to the field of automobile air conditioning, in particular to an automobile air conditioning system and its control device and method. Background technique [0002] Most of the existing air-conditioning systems of electric vehicles use PTC electric heating completely for heating in winter, replacing the original engine as the source of heat. However, due to the low efficiency and high power of PTC as a direct energy source for heating, the air conditioning system consumes a lot of electricity in the heating mode in winter, which greatly shortens the cruising range of electric vehicles. At present, the heat pump air-conditioning system only has one condenser and one evaporator, which are directly used in the car. When the cooling mode is switched to the heating mode, the condensed water on the evaporator evaporates, and blowing into the car will cause the window glass to fog; On the one hand, the heat pump air-conditioning system ...

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Problems solved by technology

[0004] Therefore, in order to solve the problem in the prior art that the capacity of the outside condenser cannot be fully exerted due to the non-reversing of the refrigerant in the cooling mode and the heating mode of the outside condenser, the present invention provides an automobile air conditioning system and its control device and methods

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