Non-halt defrosting air conditioner system

Abstract

The invention discloses a non-halt defrosting air conditioner system. The non-halt defrosting air conditioner system comprises a compressor, a four-way reversing valve, an indoor heat exchanger, a heat storage tank and an outdoor heat exchanger, wherein the four-way reversing valve is provided with a first connector, a second connector, a third connector and a fourth connector; the first connectoris connected with an air outlet of the compressor through a first pipeline; the second connector is connected with a first end port of the indoor heat exchanger through a second pipeline; the third connector is connected with an air return inlet of the compressor through a third pipeline; the third pipeline is connected with a first electronic valve in series; the fourth connector is connected with a first end port of the outdoor heat exchanger through a fourth pipeline; a second end port of the outdoor heat exchanger is connected with a second end port of the indoor heat exchanger through afifth pipeline; the fifth pipeline is sequentially connected with a first electronic expansion valve and a second electronic valve in series; and a first bypass branch connected with the heat storagetank in series is connected between the pipe sections, located at the two ends of the second electronic valve, of the fifth pipeline. The technical scheme achieves non-halt defrosting, improves the heating comfort level and improves the heat exchange efficiency.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a non-stop defrosting air conditioning system. Background technique [0002] When the air conditioner is heating in winter, due to the low outdoor temperature, when the surface temperature of the outdoor heat exchanger coil is lower than the dew point temperature of the cooled air, the water vapor in the humid air undergoes a phase change and accumulates in the form of ice crystals. A layer of frost forms on the surface of the outdoor heat exchanger. As the frost layer thickens, the heat transfer coefficient of the heat exchanger surface decreases, resulting in a rapid decline in heat transfer capacity, and the frost layer needs to be removed. [0003] At present, the commonly used defrosting methods are reverse cycle defrosting, hot gas bypass technology defrosting (including double hot gas bypassing, etc.), electric heating defrosting, defrosting control method, etc.,...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used defrosting methods are reverse cycle defrosting, hot gas bypass technology defrosting (including double hot gas bypassing, etc.), electric heating defrosting, defrosting control method, etc., but none of the above methods can truly achieve non-stop operation Frost

Reverse cycle defrosting will result in poor indoor human comfort, and the compressor will start and stop continuously, resulting in a large energy loss and affecting the life of the compressor; compared with reverse cycle defrosting, although the hot gas bypass technology defrosting has a certain improvement, The frosting cycle has increased and the defrosting time has been reduced, but it still needs to be shut down for defrosting; using pure electric heating to defrost consumes too much energy, which is not conducive to energy saving and environmental protection; other solutions currently on the market are also far from non-stop There is still a big gap in the goal of defrosting, and there is no non-stop defrosting technology that can be industrialized in the true sense

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