Air conditioning system, air conditioning system control method, and air conditioner

Abstract

The invention provides an air conditioner system, an air conditioner system control method and an air conditioner. The air conditioner system comprises a compressor, an oil return pipeline communicating with the oil return end of the compressor, a heating pipeline which is at least partially adjacent to the oil return pipeline, wherein when a coolant with preset temperature is introduced into the heating pipeline, the heating pipeline exchanges heat with the oil return pipeline, to increase the oil return temperature of the oil return pipeline. By the arrangement of the heating pipeline which exchanges heat with the oil return pipeline, the coolant in the air conditioner system is introduced into the heating pipeline, and the coolant entering the heating pipeline can supply heat to the oil return pipeline, so that the oil return temperature in the oil return pipeline can be increased; and therefore, the viscosity of oil in the oil return pipeline is reduced, the oil return efficiency of the compressor is improved, and the service life of the compressor is effectively prolonged.

Description

technical field [0001] The present invention relates to the technical field of air-conditioning equipment, in particular to an air-conditioning system, an air-conditioning system control method, and an air-conditioner. Background technique [0002] In the prior art, the oil return control of the compressor generally adopts the scheme that one compressor utilizes one oil return capillary to control the oil return. The oil return capillary used should not be too thick. Too thick can improve the oil return rate, but it will reduce the oil return performance. The oil return capillary should not be too thin. Although thinning can improve the performance of the unit, it will make it difficult for the oil return capillary to return oil and reduce reliability. When a compressor uses a capillary oil return method to operate at ultra-low temperature (-30°C and below), due to the increase of lubricating oil flocs in the oil-gas separator, the viscosity increases, which will cause the ...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide an air conditioning system, an air conditioning system control method and an air conditioner to solve the problem of difficult oil return from the compressor in the prior art

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