Air conditioner and defrosting control method thereof

Abstract

The invention provides an air conditioner and a defrosting control method thereof, wherein the defrosting control method of the air conditioner comprises the following steps of S1, when a shutdown control signal is received, detecting the outlet temperature of an outdoor heat exchanger of the air conditioner and an outdoor ambient temperature; S2, determining whether the air conditioner operates in a heating manner when the shutdown control signal is received; S3, if the air conditioner operates in the heating manner, determining whether the outlet temperature of the outdoor heat exchanger satisfies a frosting condition; S4, if the outlet temperature of the outdoor heat exchanger satisfies the frosting condition, determining whether the outdoor ambient temperature is smaller than or equal with a preset ambient temperature; and S5, if the outdoor ambient temperature is smaller than or equal with the preset ambient temperature, making the air conditioner perform defrosting. The air conditioner and the defrosting control method therefore are advantageous in that more accurate determination for the defrosting condition on the surface of the outdoor heat exchanger is realized; more intelligent controlling is realized; and furthermore the air conditioner is made to perform defrosting in consideration of the outdoor ambient temperature, thereby preventing unnecessary electric energy waste.

Description

technical field [0001] The invention relates to the technical field of electric appliance manufacturing, in particular to an air conditioner and a defrosting control method thereof. Background technique [0002] With the increasingly popular use of air conditioners, users have higher and higher requirements for air conditioners. When a traditional air conditioner is running in heating mode, if frost has formed on the surface of the outdoor heat exchanger when it receives a shutdown command, the frost on the surface of the outdoor heat exchanger cannot Melts away automatically by the heat of the outside environment, and may even freeze in high humidity, windy conditions. Therefore, when the air conditioner is controlled to operate in the heating mode next time, the heat exchange will be hindered due to the frosting of the outdoor heat exchanger, and the speed of frosting of the outdoor heat exchanger will also be accelerated, resulting in a decrease in the heating capacity a...

AI Technical Summary

Problems solved by technology

In addition, sometimes, even if there is frost on the surface of the outdoor heat exchanger, but the outdoor ambient temperature is higher, for example, higher than the judgment temperature, that is, the heat from the outdoor ambient temperature can automatically melt the frost, and the forced defrosting is still performed, resulting in unnecessary Necessary power waste

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