Treating method and treating system for compressor oil return pipeline faults of air conditioning system

Abstract

The invention provides a treating method and a treating system for compressor oil return pipeline faults of an air conditioning system. The treating method includes: arranging return oil temperature sensors at the positions, between capillary tubes and corresponding oil-gas separators, on compressor oil return pipelines so as to detect return oil temperature; judging the oil return pipeline faults according to difference value between detected return oil temperature and a system parameter. The treating method is simple, convenient and capable of accurately judging the compressor oil return pipeline faults of the air conditioning system and solving the problem of compressor failure caused by the fact that the oil return pipeline faults cannot be known and a user cannot be warned of inspection and maintenance; the return oil temperature sensors are arranged at the positions, between the capillary tubes and the corresponding oil-gas separators, on the compressor oil return pipelines, so that on one hand, each return oil temperature sensor is kept a distance from the corresponding oil-gas separator, and heat transfer caused by lubricating oil, in higher level, at the bottom of the oil-gas separators is prevented from resulting in an over-high detected value of the return oil temperature; on the other hand, the detected value of the return oil temperature is prevented from being affected by throttling effect of the capillary tubes, and the capillary tubes in different specifications can be adopted compatibly.

Description

technical field

[0001] The invention relates to the technical field of air-conditioning systems, in particular to a method and a system for handling faults in oil return pipelines of compressors in the air-conditioning system. Background technique

[0002] In the air conditioning unit of the prior art, the compressor continuously discharges the lubricating oil into the refrigeration cycle system along with the exhaust gas during operation. If the compressor cannot return oil normally, it will soon be caused by lack of oil. invalidated. In the prior art, the oil return pipeline is usually used to return the lubricating oil in the oil-gas separator to the suction port of the compressor for oil replenishment. The oil return pipeline is usually designed with filters, capillaries, solenoid valves, etc., and the capillary is for throttling Reduce the pressure to reduce the flow rate of lubricating oil (that is, reduce the flow rate), the solenoid valve is to control the on-off of...

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