Air conditioning system and control method thereof

Abstract

The invention provides an air conditioning system and a control method thereof, and relates to the air conditioning technology field. The air conditioning system and the control method thereof solve the technical problem that a part of gaseous refrigerant is mixed in refrigerant after being throttled by an existing air conditioning system, and therefore heat exchange effect of an indoor heat exchanger is influenced. The air conditioning system comprises a compressor, a condenser, a throttling device, a switching device, an evaporator and a flash evaporator, wherein the compressor is provided with a plurality of air cylinders, the evaporator is composed of a plurality of heat exchangers, the flash evaporator comprises a first flash evaporator and a second flash evaporator which are connected in parallel, the compressor, the condenser, the throttling device, the second flash evaporator and the evaporator can form a refrigeration or dehumidification circuit, the compressor and he evaporator can form a heating circuit, and temperature and humidity independent control is realized by changing flow paths of the refrigerant discharged from the compressor and the condenser through the switching device. The flash evaporator collects and separates the gaseous refrigerant in the refrigerant after being throttled, avoids the situation that the gaseous refrigerant enters the heat exchangersand then influences heat exchange efficiency of the heat exchangers, and reduces power consumption of the compressor, thereby improving the energy efficiency level of the compressor.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an air conditioning system and a control method thereof. Background technique [0002] At present, when the air conditioner is cooling, the refrigerant throttled by the throttling element directly enters the indoor heat exchanger for heat exchange. Since the throttled refrigerant is mixed with a part of gaseous refrigerant, it enters the indoor heat exchanger. The gaseous refrigerant in the air not only affects the heat exchange effect of the indoor heat exchanger, but also increases the compression power consumption of the compressor and reduces the energy efficiency ratio of the compressor, thus affecting the energy efficiency level of the air conditioner. [0003] In addition, most of the indoor heat exchangers of air conditioners are composed of two rows of heat exchangers, and the heat exchangers are arranged in series. After the heat exchanger, the temperature cha...

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Problems solved by technology

[0004] The object of the present invention is to provide an air-conditioning system and its control method to solve the problem in the prior art that the throttling refrigerant is mixed with a part of the gaseous refrigerant, and the gaseous refrigerant entering the indoor heat exchanger affects the indoor temperature. Technical problems of heat exchange effect of heat exchanger

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