Method and system for detecting filth blockage of air-conditioner heat exchanger based on fan power and air conditioner

Abstract

The invention relates to a method and system for detecting filth blockage of an air-conditioner heat exchanger based on fan power and an air conditioner. The method includes the following steps of obtaining the filth blockage degree of a dust filtering net at a first fan rotating speed; obtaining first fan power corresponding to the filth blockage degree of the dust filtering net at the first fan rotating speed; obtaining second fan power corresponding to the overall filth blockage degree of an indoor unit at the first fan rotating speed; generating the fan power variation; obtaining the filth blockage level, corresponding to the fan power variation, of the heat exchanger at the first fan rotating speed. The detecting method is simple, the detecting result is accurate, the filth blockage conditions of the dust filtering net and the heat exchanger can be detected at the same time, and the air conditioner can be independently controlled accordingly (for example, the dust filtering net or the heat exchanger is cleaned in a corresponding cleaning mode at different moments); in addition, different control modes can be adopted for the air conditioner according to the different filth blockage levels of the heat exchanger, the functions of the air conditioner are enriched, and the user use satisfaction degree is increased.

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 based on fan power, 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, ...

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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