Self-cleaning method for air conditioner heat exchanger and air conditioner

Abstract

The invention discloses a self-cleaning method for an air conditioner heat exchanger and an air conditioner. The air conditioner comprises a heat exchanger and an electric heating piece; and the electric heating piece corresponds to the heat exchanger. The self-cleaning method for the air conditioner heat exchanger comprises the following steps: acquiring a self-cleaning control command and entering a self-cleaning mode; adjusting the rotating speed of a fan of the air conditioner and / or reducing the temperature of an indoor heat exchanger to enable the heat exchanger to be frosted; after frosting is finished, starting the electric heating piece to defrost the heat exchanger; and detecting the temperature of an air duct on the periphery of the electric heating piece, and reducing the working power of the electric heating piece when the temperature of the air duct is greater than or equal to a preset safe temperature. By the technical scheme, the workings stability of the air conditioner in a defrosting process is improved, and the self-cleaning effect is greatly improved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a self-cleaning method for a heat exchanger of an air conditioner and an air conditioner. Background technique [0002] In existing air conditioners, the heat exchanger fins are tightly designed into multi-layer sheets, and the gap between each sheet is only 1-2 mm, and various pressure profiles or cracks are added to the air conditioner fins to increase the heat exchange area. When the air conditioner is running, a large amount of air circulates through the heat exchanger to exchange heat. Various dust and impurities in the air will adhere to the heat exchanger, which not only affects the effect of the heat exchanger, but also easily breeds bacteria. At this time, it is necessary to exchange heat for the air conditioner. device for cleaning. At present, the cleaning work of the outdoor unit usually takes a long time or is never cleaned. During manual cleaning, because ...

AI Technical Summary

Problems solved by technology

At present, the cleaning work of the outdoor unit usually takes a long time or is never cleaned. During manual cleaning, because the heat exchanger is close to the wall, it is inconvenient to clean, resulting in incomplete cleaning. If foreign objects are used to clean, it may cause the fins to fall. sheet, which affects the heat exchange effect of the heat exchanger and shortens its service life

[0003] Now there is also a new type of self-cleaning method that defrosts and defrosts on the heat exchanger. The defrosting process of the existing method is realized by switching the four-way valve, but the indoor heat exchanger When switching with the outdoor heat exchanger, due to the low evaporation temperature and low evaporation pressure during the self-cleaning process, the high and low pressure difference of the air conditioner is too large, which will cause a large impact on the compressor during the four-way valve switching process, causing the air conditioner to running unstable

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