REFRIGERANT RECOVERY DEVICE AND REFRIGERANT RECOVERY METHOD

Japanese Patent JP2017053625

A

PROBLEM TO BE SOLVED: To provide a refrigerant recovery device that can reduce deterioration of a situation that might occur at recovery of a combustible refrigerant and can continuously recover the refrigerant.SOLUTION: A refrigerant recovery device includes: a gas liquid separation container 14 to which mixed fluid of a refrigerant and refrigeration machine oil is supplied in the vacuum state and that separates the refrigeration machine oil and the refrigerant from each other; a compressor 18 for recovering and compressing the separated refrigerant; a heat exchange device 100 for cooling the compressed refrigerant to liquefy it; a refrigerant storage container 111 for storing the liquefied refrigerant; a refrigeration machine oil discharge port 16 capable of discharging the refrigeration machine oil from which at least part of the refrigerant is separated to outside of the gas liquid separation container 14; a dry air supply section for sending dry air into the gas liquid separation container 14 and discharging the refrigeration machine oil from which at least part of the refrigerant is separated to outside of the gas liquid separation container 14 via the refrigeration machine oil discharge port 16; and a vacuum pump 17 for discharging the dry air in the gas liquid separation container 14 to cause inside of the gas liquid separation container 14 to become a vacuum state.SELECTED DRAWING: Figure 1

MURAKAMI YOJI
FUJISAKI KATSUMI
MAEDA AKIRA
OGASAWARA SHINOBU

JP2016247601A

March 16, 2017

December 21, 2016

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MITSUBISHI ELECTRIC CORP

F25B45/00

JPH09196521A	1997-07-31
JP2007170707A	2007-07-05
JP2000283609A	2000-10-13

US20030230090A1

2003-12-18

Mizoi International Patent Service Corporation

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