A gas-liquid separator assisted air conditioner system and its control method

Abstract

A gas-liquid separator-assisted air conditioner system and its control method, the air conditioner system includes an indoor heat exchanger, an outdoor heat exchanger, a compressor, a four-way reversing valve, two DC frequency conversion fans, two gas-liquid Separator, two one-way valves, three electronic expansion valves, four temperature sensors and control modules; the two heat exchangers of the air conditioner system adopt gas-liquid separation technology, and the Part of the gas-phase refrigerant, and the electronic expansion valve is used to adjust the flow of gas-phase refrigerant, which can effectively reduce the flow resistance loss on the refrigerant side, improve the heat transfer efficiency of the heat exchanger, thereby improving the energy efficiency of the whole machine, and the separation of gas and liquid under condensing conditions When the air conditioner is in the cooling mode, the indoor heat exchanger is used as an evaporator, and the dryness of the refrigerant in the middle of the heat exchanger is already relatively high. At this time, the existence of the gas phase refrigerant will affect the liquid phase refrigerant. evaporation, and increase the flow resistance loss on the refrigerant side; in the heating mode, the outdoor heat exchanger of the air conditioner also has the same problem; the present invention can effectively solve this problem.

Description

technical field [0001] The invention relates to the technical field of air conditioner equipment, in particular to a gas-liquid separator-assisted air conditioner system and a control method thereof. Background technique [0002] Air conditioners are the main equipment for regulating the temperature of the interior space of buildings, and their energy consumption accounts for more than 40% of the total energy consumption of buildings. Therefore, the energy saving of air conditioners has been a research hotspot for many years. In an air conditioner, the heat exchange efficiency of the indoor and outdoor heat exchangers directly affects the energy efficiency level of the air conditioner. In the cooling mode of the air conditioner, the indoor heat exchanger acts as an evaporator, and the refrigerant in the heat exchanger undergoes an evaporation process. As the evaporation process progresses, the gas-phase refrigerant inside the heat exchanger becomes more and more, which will ...

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Problems solved by technology

In the cooling mode of the air conditioner, the indoor heat exchanger acts as an evaporator, and the refrigerant in the heat exchanger undergoes an evaporation process. As the evaporation process progresses, the gas-phase refrigerant inside the heat exchanger becomes more and more, which will hinder the liquid-phase refrigerant. At the same time, the increase of the dryness of the refrigerant will lead to an increase in the pressure drop gradient on the refrigerant side; this problem also exists in the outdoor heat exchanger in the heating mode of the air conditioner

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