Temperature adjusting equipment oil return control method, device and system and air conditioner

Abstract

The invention relates to a temperature adjusting equipment oil return control method, device and system and an air conditioner. Air temperature information within the future preset time period is obtained; when it is determined that the advance oil return condition is met according to the air temperature information within the future preset time period and the preset oil return frequency reduction critical temperature, the oil return duration is determined according to the air temperature information within the future preset time period and a preset compressor oil return duration model; and the oil return timing is determined according to the oil return duration and the air temperature information within the future preset time period, and according to the oil return timing, a compressor of temperature adjusting equipment is controlled to start oil return at the oil return timing. When it is judged that oil return needs to be conducted in advance by combining the air temperature information within the future preset time period with the preset oil return frequency reduction critical temperature, the advance oil return timing is determined according to the air temperature information within the future preset time period and the preset compressor oil return duration model, thus, the compressor completes oil return before the air temperature is raised to the preset oil return frequency reduction critical temperature, it is ensured that the compressor can conduct oil return at the highest frequency, and protective frequency reduction does not occur, and the oil return efficiency is improved.

Description

technical field

[0001] The present application relates to the technical field of temperature adjustment equipment control, in particular to an oil return control method, device, system and air conditioner for temperature adjustment equipment. Background technique

[0002] The temperature adjustment equipment sets the oil return mode, mainly to bring the lubricating oil in the system pipeline back to the compressor or oil separator through the refrigerant to prevent the compressor from burning out. People are resting or working, and the fluctuation of unit capacity during oil return will also bring discomfort to users.

[0003] Most of the traditional temperature adjustment equipment adopts timing oil return control. This oil return procedure is simple and reliable. However, due to the different working environments of the unit and the changeable outdoor working conditions, the oil return in this way is not accurate enough. In addition, it is suitable for high-temperature ref...

Images