Dirt blocking detection method, storage medium, control device and air conditioner

CN116066964BActive Publication Date: 2026-07-07GD MIDEA AIR CONDITIONING EQUIP CO LTD +1

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: GD MIDEA AIR CONDITIONING EQUIP CO LTD
Filing Date: 2021-10-29
Publication Date: 2026-07-07

AI Technical Summary

Technical Problem

Existing air conditioners suffer from high hardware costs or inaccurate judgment when diagnosing dirt and blockage, and cannot effectively detect dirt and blockage in filters, heat exchangers, air ducts, and fan wheels.

Method used

By controlling the fan speed to a fixed speed when the air conditioner is in heating mode and not in anti-cold air mode, the self-test fan power and self-test temperature are obtained. Based on the initial power, initial temperature, self-test fan power and self-test temperature, the degree of dirt blockage of the air conditioner is determined, the influence of gas heat exchange on fan power is eliminated, and accurate detection is performed using changes in air density and temperature.

Benefits of technology

It improves the accuracy of dirt and blockage detection, reduces hardware costs, does not rely on infrared sensors and photosensitive sensors, reduces the impact of chip jamming and radiation interference, and saves detection costs.

✦ Generated by Eureka AI based on patent content.

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Figure CN116066964B_ABST

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Abstract

The embodiment of the application discloses a dirty block detection method of an air conditioner, a storage medium, a control device and the air conditioner, wherein the dirty block detection of the air conditioner comprises: in the case that the air conditioner is in a heating mode and is not in a cold wind prevention state, controlling the fan speed of the air conditioner to reach a fixed speed. The self-checking fan power and the self-checking temperature of the air conditioner are acquired, wherein the self-checking fan power is the fan power of the air conditioner at the fixed speed, and the self-checking temperature comprises the indoor environment temperature and the heat exchanger temperature of the air conditioner at the self-checking fan power. Based on the initial power, the initial temperature, the self-checking fan power and the self-checking temperature of the air conditioner, the dirty block condition of the air conditioner is determined, wherein the initial power is the fan power corresponding to the fixed speed of the air conditioner in the initial entering of the air supply mode, and the initial temperature is the indoor environment temperature corresponding to the initial power. The accuracy of the dirty block detection through the fan power can be improved, and the cost of the dirty block detection can be saved.

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