Air conditioner heat exchanger filth blockage detection method and system and air conditioner

Abstract

The invention relates to an air conditioner heat exchanger filth blockage detection method and system and an air conditioner. The method comprises the following steps of obtaining the dust filtering screen filth blockage degree generated at the rotating speed of a first draught fan; obtaining the pressure difference, corresponding to the dust filtering screen filth blockage degree, between the two sides of a dust filtering screen generated at the rotating speed of the first draught fan; obtaining the difference value, between the pressure of the leeward side of a heat exchanger and the pressure of the windward side of the dust filtering screen, generated at the rotating speed of the first draught fan; generating the pressure difference between the two sides of the heat exchanger; and according to the pressure difference between the two sides of the heat exchanger and the rotating speed of the first draught fan, obtaining the corresponding heat exchanger filth blockage level. According to the air conditioner heat exchanger filth blockage detection method and system and the air conditioner, the detection method is simple; a detection result is accurate; and in addition, the filth blockage conditions of the dust filtering screen and the heat exchanger can be detected at the same time, so that independent control is conducted on the air conditioner, for example, corresponding cleaning modes are adopted for cleaning the dust filtering screen or the heat exchanger at different moments. Furthermore, different control modes can be adopted for the air conditioner according to different filth blockage levels of the heat exchanger; and functions of the air conditioner are enriched, and use satisfaction of users is enhanced.

Description

technical field [0001] The invention relates to the field of air conditioner control, in particular to a method and system for detecting dirty blockage of an air conditioner heat exchanger and an air conditioner. Background technique [0002] The heat exchanger is the core component of the air conditioner and plays a vital role in the cooling and heating system of the air conditioner. The structure of the heat exchanger is composed of pipes and densely distributed fins. The fins are inserted in series on the pipes and arranged densely. During operation, when the airflow passes through it, the dust and sundries in the air are easy to adhere to the fins and cause dirty blockage. The impact of a dirty heat exchanger is much more serious than that of a dust filter. It will not only reduce the air output of the air conditioner and affect the performance of the air conditioner, but also because the heat exchange between indoor and outdoor depends on the fins, and the dust attache...

AI Technical Summary

Problems solved by technology

However, the dust filter and the heat exchanger are different in terms of dust accumulation rate, parasitic bacteria, and cleaning methods: the dust accumulation rate of the dust filter is fast, and the dust accumulation rate of the heat exchanger is relatively slow due to the protection of the dust filter; Parasitic dust mites and bacteria mixed in the air dust, in addition to these bacteria on the heat exchanger, more molds will grow due to its humid environment; the dust filter is easy to clean, manual cleaning or automatic brush cleaning is easy to achieve, It takes a short time and does not need to consume a lot of energy. However, due to its own structural reasons, the heat exchanger is very difficult to clean, and the required method takes a long time and consumes a lot of energy.

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