Defrosting control device and method of air conditioner and air conditioner

Abstract

The invention discloses a defrosting control device and method of an air conditioner and the air conditioner. The device comprises an acquiring unit and a control unit, wherein the acquiring unit is configured to acquire the air inlet temperature, the air inlet humidity, the air outlet temperature and the air outlet humidity of the air conditioner; and the control unit is configured to determine the frosting amount of an evaporator of the air conditioner according to the air inlet temperature, the air inlet humidity, the air outlet temperature and the air outlet humidity, determine whether theair conditioner needs defrosting or not according to the air inlet temperature, the air outlet temperature and the frosting amount, control the air conditioner to enter the defrosting mode under thecondition that the air conditioner needs defrosting, and control the defrosting time of the air conditioner under the defrosting mode. According to the technical scheme, the judgment logic for the defrosting entering condition and the defrosting quitting condition during hot air bypass defrosting is intelligentized, so that different working conditions are adapted.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control device, method and air conditioner, in particular to a hot gas bypass defrosting control device, method and air conditioner (such as an air conditioner for refrigerated vehicles) applied to refrigerated vehicles. Background technique [0002] For refrigerated vehicles, during the cooling process of the unit, the moisture in the compartment will condense into frost on the surface of the evaporator. The frost layer will adhere to the evaporator, which reduces the heat transfer coefficient of the evaporator on the one hand, and blocks the air duct on the other hand; thus affecting the cooling effect and increasing power consumption. In related schemes, the defrosting mode of the unit includes hot gas bypass defrosting, but the judging logic of the defrosting entry conditions and exit conditions during hot gas bypass defrosti...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a defrosting control device, method and air conditioner for an air conditioner, so as to solve the problem that the judging logic of defrosting entry conditions and exit conditions is not intelligent enough to adapt to different working conditions when hot gas bypasses defrosting, To achieve the intelligent judgment logic of the entry condition and exit condition of defrosting during hot gas bypass defrosting, so as to adapt to the effect of different working conditions

Images