Frost preventing and removing system and frost preventing and removing method of heat pipe type air conditioner

Abstract

The invention relates to a frost preventing and removing system and a frost preventing and removing method of a heat pipe type air conditioner. A compressor waste heat recovery channel is separated from an outdoor machine through a partition plate; a compressor and an exhaust pipeline are positioned in the compressor waste heat recovery channel; the compressor waste heat recovery channel is internally provided with a waste heat recovery fan and a horizontal heat pipe; and the horizontal heat pipe is parallel to the heat transfer pipe of an outdoor heat exchanger and closely coupled with the heat transfer pipe of the outdoor heat exchanger through a heat exchange fin. According to the frost preventing and removing method which is disclosed by the invention, heat pipe technology compressor waste heat recovery based frost removal and hot gas bypass based frost removal are effectively combined. The frost preventing and removing system disclosed by the invention can realize a winter heating frost preventing mode, a winter heating periodical double-effect frost removing mode and a winter heating optimizing operation mode when operated for winter heating, has dual functions, namely frost prevention and removal, and the outstanding advantages of prolonging the frosting time, shortening the frost removing time, realizing the continuous heat supply of an indoor machine, and the like, and can be used for reducing the condensing temperature by realizing the double-effect cooling of the outdoor heat exchanger by adopting a heat pipe technology when operating for summer cooling, thereby reducing the power consumption of the compressor and enhancing the work property of a machine set.

Description

technical field [0001] The invention relates to an anti- and defrosting system for an air conditioner, in particular to a heat pipe technology used to recover waste heat from a heat pump type air conditioner compressor to prevent frosting of an outdoor heat exchanger and to defrost in combination with hot gas bypass under low temperature conditions Anti- and defrosting system of heat pipe type air conditioner. Background technique [0002] Using a heat pump air conditioner for heating in winter is an energy-saving heating method. When the air-cooled heat pump operates when the outdoor ambient temperature is lower than 5°C, the surface temperature of the evaporator is likely to be lower than 0°C. Frosting will occur on the surface of the heat exchanger, and the frost will reduce the air passage between the fins, increase the thermal resistance of the heat exchanger, and cause the performance of the heat exchanger to deteriorate sharply. Therefore, when the frost layer of the ...

AI Technical Summary

Problems solved by technology

This method can only use a small part of the waste heat discharged from the top of the compressor for defrosting, and cannot use the waste heat discharged from other parts of the compressor shell; and because the long-term vibration of the compressor during operation will make the contact surface between the flat heat pipe and the compressor shell loose, Reducing the working reliability, when the vibration is severe, the heat-conducting silica gel and the flat heat pipe will be separated from the compressor, and the heat pipe will fail completely, and the purpose of defrosting cannot be achieved; on the other hand, the waste heat discharge of the compressor does not match the heat supply required for defrosting It will also lead to the inability to completely defrost when the outdoor ambient temperature is low; especially, when the air conditioner is running in the summer cooling mode of the air conditioner, that is, the working state of the outdoor heat exchanger is a condenser, because the air conditioner between the compressor and the outdoor heat exchanger The heat pipe of the flat plate loop cannot be closed. At this time, the waste heat of the compressor will cause the condensation temperature of the outdoor heat exchanger to rise, resulting in a decrease in the working performance of the unit.

[0006] For example, the application number is 200810153761.5 [3] Invention Patent "A hot gas bypass uninterrupted heating and defrosting cycle structure of an air conditioner ", discloses a method of anti-frost by bypassing the hot gas of the refrigerant of the air conditioner. Start and stop to automatically adjust the refrigerant flow between indoor heating and outdoor defrosting, ensuring uninterrupted indoor heating while outdoor defrosting. The advantage of realizing complete defrosting, but its disadvantage is that due to the use of the condensation heat of the refrigerant for defrosting, the heat supply to the room is reduced, which will lead to a decrease in the working performance of the unit

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