Filth blockage detection method and device for air conditioner

Abstract

The invention discloses a filth blockage detection method for an air conditioner. A flow of the method comprises the following steps of detecting current running power of a motor of the air conditioner; when the detected current running power is equal to preset standard motor power, updating constant frequency of the standard motor power, wherein an initial value of the constant frequency of the standard motor power is zero; continuing detecting the current running power of the motor of the air conditioner until the constant frequency of the standard motor power is greater than preset constant frequency of the standard motor power, and determining that the air conditioner is in a filth blockage state. The invention further discloses a filth blockage detection device for the air conditioner. According to the filth blockage detection method and device for the air conditioner, the problem of false alarming of a conventional air conditioner about the filth blockage state is solved, and whether a filter screen or a heat exchanger of the air conditioner is blocked by filth can be reliably judged.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method and device for detecting dirty blockage of an air conditioner. Background technique [0002] At present, all air conditioners are equipped with filters or heat exchangers, which need to be cleaned regularly by the user, otherwise bacteria will easily breed and cause secondary pollution, and dust will affect the air supply volume and air supply distance of the air conditioner, thus affecting the cooling and cooling performance of the air conditioner. Heating effect. It is a slow process for dust to be deposited on the filter screen or heat exchanger after being filtered. For the dirty blockage of the filter screen or heat exchanger of the air conditioner, the operating power of the motor is detected and compared with the power reference of the motor when it is not dirty. The absolute power value of the motor is used to judge whether there is a dirty blockage. Ho...

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Problems solved by technology

[0002] At present, all air conditioners are equipped with filters or heat exchangers, which need to be cleaned regularly by the user, otherwise bacteria will easily breed and cause secondary pollution, and dust will affect the air supply volume and air supply distance of the air conditioner, thus affecting the cooling and cooling performance of the air conditioner. heating effect

It is a slow process for dust to be deposited on the filter screen or heat exchanger after being filtered. For the dirty blockage of the filter screen or heat exchanger of the air conditioner, the operating power of the motor is detected and compared with the power reference of the motor when it is not dirty. , the absolute power value of the motor is used to judge whether there is a dirty blockage, but when the temperature, voltage fluctuate or the air duct is abnormal, it may cause false alarms, resulting in inaccurate judgment of dirty blockage

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