Title:
METHOD FOR REPLACING REFRIGERANT IN REFRIGERATION DEVICE, REFRIGERATOR OIL, AND CONTAINER
Document Type and Number:
WIPO Patent Application WO/2021/153137
Kind Code:
A1
Abstract:
A method for replacing refrigerant in a refrigeration device in which a first refrigerant with which a refrigerant circuit (10) of a refrigeration device is filled is replaced with a second refrigerant that is used together with a refrigerator oil having a higher additive content than a refrigerator oil that is used together with the first refrigerant includes a refrigerant recovery step for recovering the first refrigerant from the refrigerant circuit (10), an oil filling step for additionally filling the refrigerant circuit (10) with a refrigerator oil having a predetermined additive content, and a refrigerant filling step for filling the refrigerant circuit (10) with the second refrigerant. The predetermined additive content is higher than the additive content of the refrigerator oil that is used together with the second refrigerant.
Inventors:
SHIMOZONO NAOKI (JP)
YOKOYAMA TOMOMI (JP)
TAKEUCHI RYUUJI (JP)
TANAKA MASARU (JP)
YOKOYAMA TOMOMI (JP)
TAKEUCHI RYUUJI (JP)
TANAKA MASARU (JP)
Application Number:
PCT/JP2020/048887
Publication Date:
August 05, 2021
Filing Date:
December 25, 2020
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
C10M169/04; C09K5/04; F25B1/00; F25B45/00
Domestic Patent References:
| WO2017145278A1 | 2017-08-31 | |||
| WO2006118140A1 | 2006-11-09 |
Foreign References:
| JP2002277114A | 2002-09-25 | |||
| JP2013527273A | 2013-06-27 | |||
| JP2002277113A | 2002-09-25 | |||
| JP2003042603A | 2003-02-13 | |||
| US20170211860A1 | 2017-07-27 | |||
| JP2019214720A | 2019-12-19 |
Other References:
See also references of EP 4079831A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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