Title:
WORKING MEDIUM FOR REFRIGERANT COMPRESSION-TYPE REFRIGERATION CYCLE DEVICES, AND REFRIGERATION CYCLE DEVICE USING SAID WORKING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/074686
Kind Code:
A1
Abstract:
[Problem] The present invention addresses the problem of providing a working medium for refrigerant compression-type refrigeration cycle devices, the working medium comprising a hydrocarbon-containing refrigerant and a refrigerating machine oil, wherein the refrigerating machine oil achieves at least one of the following advantages, i.e., high stability, appropriate compatibility with the refrigerant, high lubricity and high electrical insulation. [Solution] The present invention provides a working medium for refrigerant compression-type refrigeration cycle devices, the working medium comprising a refrigerant that contains a hydrocarbon having 2 to 4 carbon atoms but not having a halogen atom, and a refrigerating machine oil that contains a polyalkylene glycol and a mineral oil, wherein: the polyalkylene glycol is represented by general formula (1), and has a kinematic viscosity of 2 mm2/s to 60 mm2/s at 40°C; the mineral oil has an aniline point of 55°C to 105°C, a pour point of -15°C or less, and a kinematic viscosity of 2 mm2/s to 100 mm2/s at 40°C; the polyalkylene glycol is contained in an amount of 10% by mass to 60% by mass relative to the total mass of the refrigerating machine oil; and the mineral oil is contained in an amount of 40% by mass to 90% by mass relative to the total mass of the refrigerating machine oil.
Inventors:
YOKOI KIYOSHIGE (JP)
KAWAMURA SHINYA (JP)
KAWAMURA SHINYA (JP)
Application Number:
PCT/JP2022/039731
Publication Date:
May 04, 2023
Filing Date:
October 25, 2022
Export Citation:
Assignee:
YUKO SHOJI CO LTD (JP)
International Classes:
C10M111/04; C09K5/04; C10M169/04; F25B1/00; C10M101/02; C10M105/32; C10M107/34; C10M135/30; C10N20/00; C10N20/02; C10N40/30
Domestic Patent References:
| WO2014132676A1 | 2014-09-04 | |||
| WO2014112417A1 | 2014-07-24 |
Foreign References:
| JP2018053199A | 2018-04-05 | |||
| JP2001181661A | 2001-07-03 | |||
| JP2005325151A | 2005-11-24 | |||
| JP2006275013A | 2006-10-12 | |||
| JP2014114354A | 2014-06-26 |
Attorney, Agent or Firm:
HATTA & ASSOCIATES (JP)
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