Refrigeration cycled oil circulation discharge measurement apparatus and experimental unit having the same

Abstract

Provided is a measuring apparatus 2 for circulated oil flow rate in a freezing cycle wherein a circulated oil amount in the freezing cycle is measured on line, and a flow rate of oil returned to an arbitrary portion of the line is controlled with high accuracy. An oil separator 3 including an oil tank 3b and an oil level meter 6 is interposed in the course of a cooling pipe line 12a on the discharge side of a freezing compressor 12, and oil mixed in a refrigerant is separated into the oil tank 3b. Further, a motor driven flow rate control valve 4b capable of adjustment of an oil level in the oil tank 3b or / and a motor driven control pump 7a, and a mass flow rate meter 5 are disposed in series on a pipe line 2b on the oil outlet side of the oil tank 3b to form a measuring apparatus 2 for a circulated oil flow rate adapted such that the oil effluxed from the mass flow rate meter 5 is returned to the freezing cycle.

Description

technical field [0001] The present invention relates to a kind of oil circulation flow measurement device of refrigeration cycle and the test device equipped with the oil circulation flow measurement device and air conditioner; The circulating flow rate of oil discharged from the compressor for refrigeration is measured, and the circulating flow rate can be adjusted. Background technique [0002] Oil that circulates in a refrigeration compressor of a refrigeration device or an air conditioner is used in a mixture with a refrigerant. However, since the mixing ratio of refrigerant and oil has a great influence on the performance of refrigeration equipment or air-conditioning equipment, it is necessary to measure the amount of oil circulation in the test equipment of the refrigeration cycle. [0003] Previously, JIS B8606 described the gravimetric method as a method of measuring the oil circulation amount of refrigeration compressors. This is a method of measuring the oil flow...

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Problems solved by technology

However, since the mixing ratio of refrigerant and oil will have a great influence on the performance of refrigeration equipment or air conditioning equipment, it is necessary to measure the amount of oil circulation in the test equipment of the refrigeration cycle.

[0003] Previously, JIS B8606 described the gravimetric method as a method of measuring the oil circulation amount of refrigeration compressors. This is a method of measuring the oil flow rate of condensate refrigerant in batches. Since it is separated from the pipeline Therefore, this method has difficulties in processing, for example, instantaneous changes and continuous measurements cannot be performed, and it takes a long time to measure, etc.

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