Oil return monitoring system of compressor and method thereof

A technology for monitoring systems and compressors, applied in refrigerators, refrigeration safety arrangements, refrigeration components, etc., can solve the problems of reducing the outlet pressure of the compressor, large changes in the opening degree, affecting the performance of the air conditioning system, etc. Normal, avoid waste, ensure adequate lubrication effect

CN101806298BActive Publication Date: 2013-02-20IND TECH RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2013-02-20

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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.
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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...

Examples

Embodiment Construction

[0043] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0044] Please refer to FIG. 1 , which is a schematic diagram showing the oil return monitoring system of the compressor of the centrifugal chiller main engine of the present invention. As shown in the figure, the oil return monitoring system includes a jet pump 32, a pressure sensing device 35, an oil level sensing device 33, a temperature sensing device 34 and a high-pressure gas oil return valve 31. The present invention utilizes the jet pump 32 Feed back the outlet pressure of the compressor as the power source, install the pressure sensing device 35 directly at the outlet of the compressor, and install the oil level sensing device 33 and the temperature sensing device 34 corresponding to the oil tank, so as to measure the oil tank...