Air conditioner defrosting circulation system

Abstract

The invention provides an air conditioner defrosting circulation system comprising a compressor. A compressor exhaust pipe is connected with a four-way valve which is connected with an outdoor heat exchanger, an indoor heat exchanger and a gas-liquid separator, the gas-liquid separator is connected with a compressor intake pipe, a heat storage water tank is arranged on the compressor exhaust pipe, and a water spray port of the heat storage water tank is formed in the outdoor heat exchanger and matched with a return pipe of a water storage tank. The four-way valve is not switched, but the heat-preservation heat storage water tank is arranged on the compressor exhaust pipe to collect waste heat during circulation and fully utilize the waste heat, an outdoor unit is defrosted by a hot water spraying mode, normal heating of an indoor unit is guaranteed in the whole defrosting process, heating efficiency is improved effectively, and service life of the system is prolonged.

Description

technical field [0001] The invention relates to an air-conditioning system, in particular to an air-conditioning cycle system in which the air-conditioning uses hot water spraying to defrost. Background technique [0002] When the air conditioning system is in heating operation, if the outdoor environment is low, the evaporation temperature of the system is low, and the temperature of the copper tube fin surface of the outdoor heat exchanger is lower than 0°C, the moisture in the air will frost on the fin surface. With the thickening of the frost layer, on the one hand, the heat transfer resistance is increased, and on the other hand, the wind resistance of the heat exchanger is also increased. The air volume of the outdoor heat exchanger will gradually decrease, and the increase of thermal resistance and wind resistance will affect the Outdoor evaporation absorbs heat, so the heating capacity of the system will be greatly attenuated. When the thickness of the frost layer re...

AI Technical Summary

Problems solved by technology

[0008] 1. When the defrosting mode is running, the indoor unit cannot produce hot air. If the defrosting time is long, the indoor temperature is likely to fluctuate greatly

[0009] 2. When the four-way valve is converted, it has a large impact on the valve body, which affects the service life of the four-way valve

This transformation process loses a lot of energy

The heating capacity of the system is lost, and the power consumption is increased, which is not conducive to energy saving

[0011] 4. During defrosting, because the low-pressure side cannot exchange heat, a large amount of refrigerant liquid accumulates in the gas-liquid separator, and the compressor has a hidden danger of liquid shock. The low-pressure pressure of the system will be very low, which may exceed the operating range of the compressor. compressor damage

[0013] 6. During the defrosting process, since the indoor fan stops, the low-pressure side has no place to absorb heat, and the suction liquid entering the four-way valve will exchange heat with the high-temperature and high-pressure exhaust gas entering the four-way valve, which will affect the defrosting effect

Images