Method and device for determining abnormal circulation of air conditioner refrigerants and air conditioner

Abstract

The invention discloses a method and device for determining abnormal circulation of air conditioner refrigerants and an air conditioner. The method includes the steps that in a refrigeration mode of the air conditioner, the indoor environment humidity of the indoor side of the air conditioner is acquired, and the evaporator pipe temperature and the indoor environment temperature of the indoor side are acquired; a first temperature difference between the indoor environment temperature and the evaporator pipe temperature and a second temperature difference between the pre-stored initial evaporator pipe temperature and the evaporator pipe temperature are determined, and whether the first temperature difference and the second temperature difference are smaller than or equal to corresponding preset values under the indoor environment humidity or not is judged; and when the first temperature difference and the second temperature difference are both smaller than or equal to the corresponding preset values, the abnormal circulation of the refrigerants of the air conditioner is determined. By means of the scheme, the defects that in the prior art, the mistaken judgment rate is high, the running reliability is low, and the maintaining difficulty is large can be overcome, and the beneficial effects that the mistaken judgment rate is low, the running reliability is high, and the maintaining difficulty is small can be achieved.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a method and device for determining an abnormality of an air conditioner's refrigerant cycle, and an air conditioner, in particular to a detection method for protection against an abnormality in an air conditioner's refrigerant cycle, a device corresponding to the method, and an air conditioner with the device . Background technique [0002] Split-type air conditioner (that is, split-type air conditioner) is composed of an indoor unit (that is, an indoor unit) and an outdoor unit (that is, an outdoor unit). One indoor unit corresponds to one outdoor unit; , the air conditioner connected by pipes and wires in the middle. The common fault maintenance in split air conditioners is compressor damage. The root causes of compressor damage are mainly high temperature and high current. The common high temperature damage is generally caused by the lack of refrigerant ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high misjudgment rate in the detection of whether the air-conditioning system lacks refrigerant in the prior art, and to improve the detection rate. The effect of precision

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