An air conditioner and its compressor oil return control method, device and storage medium

Abstract

The present invention provides an air conditioner and its compressor oil return control method, device and storage medium. The method includes: when the air conditioner is in refrigeration operation, when a preset oil return condition is satisfied, detecting whether the outdoor ambient temperature is is less than the first preset temperature; if it is detected that the outdoor ambient temperature is less than the first preset temperature, the oil return control is performed according to whether the evaporator tube temperature of the air conditioner is greater than the second preset temperature, wherein, if the temperature is detected When the evaporator tube temperature is greater than the second preset temperature, the oil return control is performed according to the preset first oil return control mode; if it is detected that the evaporator tube temperature is less than or equal to the second preset temperature , the oil return control is performed according to the preset second oil return control mode. The solution provided by the invention can take into account the oil return of the unit and normal refrigeration under the condition of low temperature refrigeration.

Description

technical field [0001] The invention relates to the field of control, in particular to an air conditioner and a method, device and storage medium for controlling oil return of a compressor thereof. Background technique [0002] With the progress of modern life, people's pursuit of quality of life and comfort continues to improve, and the operating environment of air conditioners has also become complicated. For example, some bakeries, the interior spaces of large buildings, and small laboratories need to run refrigeration in winter. . Generally speaking, refrigeration in winter requires less refrigeration than in summer, the operating frequency is low, and the flow of refrigerant in the system is small, which is not conducive to long-term operation. At this time, regular oil return control is required, but oil return control is performed during low temperature operation, and the system refrigerant flow Sudden increase, the evaporator of the internal unit is very easy to fro...

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Problems solved by technology

[0003] The main purpose of the present invention is to overcome the defects of the above-mentioned prior art, and provide an air conditioner and its compressor oil return control method, device and storage medium to solve the problem of sudden refrigerant flow in the system during low temperature operation in the prior art. Increase, the internal unit evaporator is very easy to frost, but the oil return is not timely or the oil return effect is poor, which will affect the reliability of the compressor operation

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