Air conditioner heating oil return control method, device and air conditioner

Abstract

The invention provides an air conditioner heating oil return control method, device and air conditioner, and relates to the technical field of air conditioners. The method for controlling the heating and oil return of an air conditioner includes the following steps: when the air conditioner operates in a heating mode, acquiring the accumulative oil return time of the air conditioner, wherein the accumulative oil return time indicates that the air conditioner operates in a state where the compressor is short of oil cumulative time. Get the indoor ambient temperature and the target indoor ambient temperature set by the user. Calculate the difference between the target indoor ambient temperature and the indoor ambient temperature to obtain the heating temperature difference. Whether the air conditioner enters the oil return operation is controlled according to the accumulative oil return time, the heating temperature difference and the current heating operation state of the indoor unit. The method, the device and the air conditioner for controlling the heating oil return of the air conditioner provided by the embodiments of the present invention can select an appropriate oil return time when the air conditioner needs to return oil for the heating operation, reduce the influence of the oil return on the heating effect, and ensure the air conditioner heating effect of the appliance.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, and in particular, to a method and device for controlling the heating and oil return of an air conditioner, and an air conditioner. Background technique [0002] During the operation of the compressor, the compressor lubricating oil plays the role of lubrication, cooling and cleaning. When the compressor runs without oil for a long time, it will cause the compressor to wear out and the motor to burn out. During the operation of the air conditioner, a part of the compressor lubricating oil circulates in the air conditioner system along with the refrigerant. The flow effect is mainly affected by the flow rate of the refrigerant. When the compressor operates at a low frequency, the circulating flow of the system is small, and the flow rate of the refrigerant decreases. Under the influence of gravity, the lubricating oil in the refrigerant is deposited on the air conditioner heat ...

AI Technical Summary

Problems solved by technology

[0004] The air conditioner heating oil return control method, device and air conditioner provided by the embodiments of the present invention solve the problem that the heating oil return causes the indoor unit to have no heating output for a long time, which easily causes the indoor temperature to drop significantly and seriously affects the heating effect

Images