Method and device for detecting dirty blockage of air conditioner heat exchanger and air conditioner thereof

Abstract

The invention provides a method, device and air conditioner for detecting dirty blockage of an air conditioner heat exchanger, relating to the technical field of air conditioning, including: acquiring mode information, ambient temperature and first coil temperature; according to the mode information, ambient temperature, first Coil temperature, get the operating temperature difference, and judge whether the operating temperature difference meets the first preset condition; if it is satisfied, then detect the first-order derivative of the operating temperature difference, and judge whether it meets the second preset condition according to the first-order derivative; if not, then detect For the second coil temperature, it is judged whether the third preset condition is met according to the range of the second coil temperature and the ambient temperature; if the second or third preset condition is met, it is judged as dirty blockage. The invention judges the accumulation of dust in the heat exchanger through the change of the ambient temperature and the plate temperature, and effectively judges whether the heat exchanger is abnormal, so as to detect whether the heat exchanger is dirty and blocked for a long time.

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 heat exchanger and an air conditioner thereof. Background technique [0002] During the long-term use of the air conditioner, when the circulating air passes through the heat exchanger, the dust particles in the air will be absorbed by the surface of the heat exchanger, and accumulate over time, resulting in an increase in the thermal resistance of the heat exchanger, resulting in a difference in the air intake, affecting The heating or cooling effect of the air conditioner. [0003] In order to ensure the effective operation of the air conditioner for a long time, it is necessary to ensure that the heat exchanger needs to maintain high heat exchange efficiency. Therefore, in order to accurately judge the operation of the heat exchanger, it is necessary to accurately and timely remind consumers to cle...

AI Technical Summary

Problems solved by technology

However, during the long-term operation of the air conditioner, the outdoor environment of the consumer and the outdoor environment are different, resulting in a large difference in the degree of blockage of the heat exchanger filter.

Using the method of regular reminder, on the one hand, when the filter screen of the heat exchanger is very clean, the consumer is still reminded to clean the filter screen, which brings inconvenience to the consumer; on the other hand, when the filter screen of the heat exchanger needs to be cleaned urgently If you still wait for the regular reminder, it will cause the air conditioner to continue to run abnormally, damage the air conditioner, and affect the user experience of consumers

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