Self-cleaning control method for air conditioner and heat exchanger of indoor unit thereof

Abstract

The invention provides a self-cleaning control method for an air conditioner and a heat exchanger of an indoor unit thereof. The method comprises the following steps: controlling the air conditioner to refrigerate, so that the temperature of the surface of the heat exchanger is lowered and the surface is frosted; continuously detecting the temperature of the surface of the heat exchanger of the indoor unit during the time period of the refrigeration of the air conditioner; adjusting a refrigeration duration time of the indoor unit according to the detected temperature of the heat exchanger; controlling the air conditioner to heat after the refrigeration is concluded, so that the temperature of the surface of the heat exchanger rises, the surface is frosted, and the frost is melted into water to clean the heat exchanger; continuously detecting the temperature of the surface of the heat exchanger of the indoor unit during the time period of the heating of the air conditioner; and adjusting a heating duration time of the air conditioner according to the detected temperature of the heat exchanger. According to the method provided by the invention, the refrigeration time and the heating time are adjusted according to the temperature of the surface of the heat exchanger of the indoor unit, so that the frosting quantity of the surface of the heat exchanger is moderate, and the optimal self-cleaning effect is achieved in the shortest time.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to an air conditioner and a self-cleaning control method for an indoor unit heat exchanger thereof. Background technique [0002] After the air conditioner is used for a long time, the evaporator will absorb a lot of dust and needs to be cleaned in time. The evaporator is generally arranged inside the housing of the indoor unit of the air conditioner, so if it is manually cleaned, the housing needs to be disassembled first, which is time-consuming and laborious. [0003] Existing part air conditioners have self-cleaning function for solving the above problems. The self-cleaning of the air conditioner means that the air conditioner is first controlled to enter the cooling state, the surface temperature of the evaporator is lowered and frost is formed, and then the four-way valve is changed to change the refrigerant flow direction, and the air conditioner is controlled to enter the he...

AI Technical Summary

Problems solved by technology

[0004] However, the existing air-conditioning self-cleaning process uses a fixed running time, that is, a fixed frosting time and defrosting time

This kind of air conditioner has less frost in the environment with low relative humidity, and the self-cleaning effect is not obvious

However, in an environment with high relative humidity, the frosting speed is fast and the amount of frosting is too large. It takes more time to defrost, which wastes time and energy.

Therefore, the existing air-conditioning self-cleaning control methods cannot adapt to different environmental conditions.

Images