Oil return monitoring system of compressor and method thereof

Abstract

The invention relates to an oil return monitoring system of a compressor and a method thereof. The method comprises the following steps: monitoring the liquid level value and the temperature value of oil in a fuel tank and the pressure value at a high pressure side outlet of the compressor to judge whether the current liquid level value is lower than the preset bottommost liquid level value in real time and monitor whether the current temperature of the lubricating oil in the fuel tank is lower than the preset smallest temperature value and simultaneously monitor whether the pressure value at a high pressure side outlet of the compressor surpasses the preset pressure value, thereby controlling the opening of the valve of the oil return valve through non-segment or segmental electric control method; therefore, the amount of the lubricating oil returned to the fuel tank is effectively controlled, enough lubricating oil is guaranteed in the fuel tank, and simultaneously the efficiency of the machine group is improved.

Description

technical field [0001] The invention relates to an oil return monitoring technology of a compressor, in particular to a valve used to control the opening of an oil return valve arranged at the oil return inlet of an oil tank, so as to effectively monitor the compression of the amount of lubricating oil flowing back to the oil tank. Oil return monitoring system and method for machine. Background technique [0002] The common refrigeration equipment in the central air-conditioning system is the Chiller. The ice water produced by the Chiller is transmitted through the pipeline, and the purpose of effectively reducing the indoor temperature is achieved by means of heat exchange. In recent years, The use of ice water hosts has become more and more popular, and the core of the ice water host is the compressor. The compressor is a special air pump. During its operation, it needs continuous lubrication with lubricating oil to reduce friction. However, When the compressor is compres...

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Problems solved by technology

However, this control method still has certain disadvantages, for example: the valve opening control of the oil return valve directly changes between 0 and 100%, which makes the opening range change too much, and when the valve of the oil return valve is opened When the opening of the compressor is limited to the maximum opening range (i.e. 100%), the high-voltage power source generated by the compressor needs to consume a lot of electric energy, which will not only reduce the outlet pressure of the compressor, but also affect the performance of the entire unit of the air conditioning system. efficacy

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