Air conditioner and defrosting method thereof

Abstract

The invention discloses an air conditioner and a defrosting method thereof and relates to the field of air conditioning. The defrosting method is used for realizing defrosting without lowering the comfort. The air conditioner comprises a first heat exchanger, a second heat exchanger and spraying heads, wherein the spraying heads communicate with the fluid of the first heat exchanger, a pipeline is arranged between the spraying heads and the first heat exchanger, and a drain valve is arranged at the lowest part of the pipeline. According to the technical scheme, by arranging the drain valve, the drain valve is opened for draining accumulated water in the pipeline after defrosting is completed each time, the pipeline is protected against frost splitting, and therefore the use range of the air conditioner defrosted through hot water is expanded, and the air conditioner can be applied to cold areas.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to an air conditioner and a defrosting method thereof. Background technique [0002] At present, the defrosting methods commonly used for outdoor heat exchangers of air conditioners are as follows: reverse cycle defrosting, hot gas bypass defrosting, and hot water defrosting. [0003] Reverse cycle defrosting: it is the defrosting method commonly used at present. When defrosting is required, the four-way valve operates, and the unit changes from a heating cycle to a refrigeration cycle, and the high-temperature exhaust gas from the compressor enters the outdoor heat exchanger for defrosting. In the defrosting cycle, the indoor heat exchanger absorbs heat and the outdoor heat exchanger releases heat, the heat supply of the unit will drop, the indoor temperature will fluctuate greatly, and the comfort of the human body will be poor. [0004] Hot gas bypass defrosting: When entering d...

AI Technical Summary

Problems solved by technology

[0005] Hot water defrosting is to use hot water to defrost, but this method has a large regional limitation. In the severe cold areas of the north, the equipment using this method is very prone to the phenomenon that the water pipes are frozen and burst.

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