METHOD FOR MEASURING DILUTION AND VISCOSITY OF LUBRICATING OIL, CONTROL METHOD AND CONTROL MODULE, AND REFRIGERATION AIR CONDITIONING SYSTEM
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United States of America Patent
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Jul 2, 2015
app pub date -
Dec 23, 2014
filing date -
Dec 31, 2013
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Abstract
Embodiments of the present invention provide a method for measuring dilution and/or viscosity of lubricating oil in a compressor. The method includes: detecting a pressure difference between an inlet and an outlet of an oil pump in the compressor by pressure difference detection apparatus, and determining the dilution of the lubricating oil and/or the viscosity of the lubricating oil according to the pressure difference detected; a lower end of the oil pump being located in the lubricating oil in the oil sump, a high-pressure side of the pressure difference detection apparatus being connected to the outlet of the oil pump and a low-pressure side of the pressure difference detection apparatus being connected to bottom of the oil sump. Embodiments of the present invention further provides a method for detecting dilution of lubricating oil, a control method and control module for controlling a compressor, and a refrigeration air conditioning system.
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