Defrosting control method of air conditioner

Abstract

The invention belongs to the technical field of air conditioners, in particular to a defrosting control method of an air conditioner, which comprises the following specific steps: (1) judging whether a remote controller has the shutdown defrosting function or not during the shutdown in the heating circulating operation state; (2) if the remote controller has the shutdown defrosting function, reading memory data of an EEPROM IC, leading the remote controller to firstly close an indoor unit, detecting the temperature of a piping, setting critical temperature value A of whether to start defrosting or not, and comparing the detected temperature of the piping with the set critical temperature value; if the temperature of the piping is smaller than the critical temperature value A, then judging whether an outdoor unit needs to carry out defrosting or not, and leading the outdoor unit to run continuously and carry out the defrosting; and (3) finishing the defrosting, and leading the indoor unit and the outdoor unit to enter into the complete shutdown state. The defrosting control method can completely remove frost of the outdoor unit after the shutdown of the indoor unit by starting the shutdown defrosting function, prevent the frost from icing due to long-term retention, avoid the unnecessary waste of energy caused by a longer period of defrosting time during the next startup, ensure the normal operation of heating circulation and effectively improve the heating performance of a heat room of the air conditioner.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, in particular to a defrosting control method for an air conditioner. Background technique [0002] An air conditioner is a cooling or heating cycle device that makes its internal cooling medium consist of compression process, condensation process, expansion process and evaporation process. Its main structure includes the compressor, condenser and expansion valve of the outdoor unit, and the outdoor unit. machine evaporator. When the air conditioner is heating, when the cold medium flowing inside the condenser exchanges heat with the surrounding air, the moisture in the air will accumulate on its surface due to the temperature difference between the inside and outside, and condense into condensed water. In winter, the air conditioner performs heating During circulation, the condensed water may be frosted due to the low outdoor temperature. When the ice layer reaches a certain thickness a...

AI Technical Summary

Problems solved by technology

[0013] As shown above, usually in order not to affect the heating capacity, it takes a certain period of time (the time can be set manually) before defrosting. When running in thermal cycle mode, the frost on the heat exchanger cannot be completely removed. In this way, when the heating cycle is started next time, the frost on the heat exchanger will greatly affect the heating capacity of the air conditioner.

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