Air conditioner defrosting control method and device

Abstract

The invention provides an air conditioner defrosting control method and device. The method comprises the steps of determining whether an air conditioning unit meets a preset defrosting starting condition or not; obtaining temperature data inside a heat exchanger under the condition that it is determined that the preset defrosting starting condition is met; determining whether the change of the temperature data inside the heat exchanger meets a preset trigger condition or not; and controlling the air conditioning unit to executing a defrosting mode under the condition that it is determined that the preset trigger condition is met. By means of the above scheme, the phenomenon of defrosting when no frost exist due to the fact that whether defrosting is needed or not is only determined by some operating parameters of the air conditioning unit at present is avoided, the technical effect of accurately and efficiently determining whether the air conditioner needs to enter the defrosting mode or not is achieved, and the energy efficiency of the air conditioner is improved.

Description

technical field [0001] The invention relates to the technical field of equipment control, in particular to an air conditioner defrosting control method and device. Background technique [0002] When the air conditioner is actually running, when the air conditioner is heating and running under certain environmental parameters, the heat exchanger of the unit will frost, and the occurrence of frost will affect the heat exchange efficiency of the air conditioner, resulting in the heating capacity attenuation, which results in less comfort for the user. When the frosting reaches a certain level, the unit needs to adjust the flow direction of the refrigerant through the four-way valve to defrost the heat exchanger. [0003] However, at present, the air conditioner generally judges whether the unit is frosted or not based on the ambient temperature, low pressure and some empirical parameters. Because the air conditioner has many uncertain factors in actual engineering, the existin...

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Problems solved by technology

[0003] However, at present, the air conditioner generally judges whether the unit is frosted or not based on the ambient temperature, low pressure and some empirical parameters. Because the air conditioner has many uncertain factors in actual engineering, the existing frosting judgment method cannot accurately and efficiently determine whether the air conditioner is frosted or not. Frosting, which will lead to the phenomenon of "no frost defrosting" in the air conditioner, which will affect the comfort of the user and cause a waste of energy

[0004] For the above problems, no effective solution has been proposed

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