Air-conditioning system achieving continuous heating

Abstract

The invention relates to an air-conditioning system achieving continuous heating. The D end of a four-way valve I, the D end of a four-way valve II and the D end of a four-way valve III are mutually connected in parallel and then connected to an exhaust port of a compressor; the E end of the four-way valve III is connected with the air end of an indoor heat exchanger, the C end of the four-way valve I is connected with the air end of an outdoor heat exchanger I, and the C end of the four-way valve II is connected with the air end of an outdoor heat exchanger II; the S end of the four-way valveI, the S end of the four-way valve II and the S end of the four-way valve III are mutually connected in parallel and then connected to an inlet of an air-liquid separator; an outlet of the air-liquidseparator is connected with a suction port of the compressor; the liquid end of the outdoor heat exchanger I and the liquid end of the outdoor heat exchanger II pass through an expansion valve I andan expansion valve II respectively to be mutually connected in parallel and then connected to the liquid end of the indoor heat exchanger; and the E end of the four-way valve I, the E end of the four-way valve II and the C end of the four-way valve III are all closed. It is guaranteed that the air-conditioning system achieving continuous heating can continuously supply heat to the indoor.

Description

technical field [0001] The invention relates to an air-conditioning system, in particular to an air-conditioning system capable of continuous heating, in particular to an air-conditioning system capable of continuous heating. Background technique [0002] When the heat pump air conditioner is running for heating, the outdoor heat exchanger absorbs heat from the environment. As the outdoor ambient temperature drops, the temperature of the refrigerant in the outdoor heat exchanger will be lower than 0°C. At this time, frosting will occur, and the frosting will gradually increase. Thickness reduces the outdoor circulating air volume, lowers the temperature of the refrigerant in the outdoor heat exchanger, and affects the heating effect. [0003] In a conventional air conditioning system, the amount of frosting is judged by detecting the temperature of the outdoor heat exchanger. When the amount of frosting reaches the threshold, the four-way valve is switched to allow high-temp...

AI Technical Summary

Problems solved by technology

[0002] When the heat pump air conditioner is running for heating, the outdoor heat exchanger absorbs heat from the environment. As the outdoor ambient temperature drops, the temperature of the refrigerant in the outdoor heat exchanger will be lower than 0°C. At this time, frosting will occur, and the frosting will gradually increase. Thickness reduces the outdoor circulating air volume, lowers the temperature of the refrigerant in the outdoor heat exchanger, and affects the heating effect

[0003] In a conventional air conditioning system, the amount of frosting is judged by detecting the temperature of the outdoor heat exchanger. When the amount of frosting reaches the threshold, the four-way valve is switched to allow high-temperature and high-pressure refrigerant to enter the outdoor heat The low-pressure refrigerant enters the indoor heat exchanger to evaporate and absorb heat, and the indoor environment cannot continue to supply heat but also absorbs heat, resulting in a significant drop in indoor temperature and poor user experience

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