A method and system for controlling heating and defrosting of an air conditioner outdoor unit

Abstract

The invention discloses a method and system for controlling heating and defrosting of an outdoor unit of an air conditioner. When the defrosting mode starts, the heating device is turned on; t2 is cleared; restart timing, after setting the time, judge whether the outdoor heat exchanger coil temperature Te ≤ the duration of the low value of the set coil temperature t1 reaches the set time, and the outer ring temperature Ta ≤ set outside The duration t2 of the low value of the ambient temperature reaches the set time, and the compressor is running, and the air conditioner is in the heating mode; if it is satisfied, control the opening and running time of the heating device according to the outer ring temperature Ta; if it is not satisfied, turn off the heating device; the present invention accurately controls the opening and running time of the heating device according to the temperature Ta of the outer ring, which can not only realize the effect of consolidating the defrosting effect, but also reduce the power consumption of the heating device, and solve the problem of insufficient control of the heating device in the prior art. Accurate, high power consumption issues.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a method and system for controlling heating and defrosting of an outdoor unit of an air conditioner. Background technique [0002] During the low-temperature heating operation of the air conditioner in winter, as the operating time of the air conditioner increases, the frosting on the outdoor unit will increase. The more frosting, the greater the impact on the heat exchange efficiency of the outdoor unit and reduce the indoor heating effect. At present, air-conditioning products have adopted the method of electric heating wire to assist defrosting of the outdoor unit, but the control is too simple and not accurate enough, so that the electric heating wire is in the open state for a long time, which increases power consumption. Contents of the invention [0003] The invention provides a method for controlling heating and defrosting of an outdoor unit of an a...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for controlling heating and defrosting of an outdoor unit of an air conditioner, which solves the problems of inaccurate heating control and large power consumption in the prior art

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