Title:
REFRIGERATION DEVICE AND SEALED ELECTRIC COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2016/113993
Kind Code:
A1
Abstract:
The objective is to reduce abrasion of a compressor sliding member and improve the fatigue life of a roller bearing in a refrigeration device using difluoromethane. This refrigeration and air-conditioning device is equipped with: a sealed electric compressor which draws in and compresses a difluoromethane refrigerant, has a sliding part, and in which a refrigerator oil is sealed; a heat exchanger that dissipates heat from the refrigerant discharged from the compressor; a decompression device that decompresses the refrigerant flowing from the heat exchanger; and a refrigeration cycle that circulates the refrigerant decompressed by the decompression device via the heat exchanger, which absorbs the heat of the refrigerant. This refrigeration and air-conditioning device is characterized in that the refrigerator oil is a modified terminal polyalkylene glycol having a viscosity-pressure coefficient of 11 GPa-1 or greater and expressed by the chemical formula (1) (where R1 and R3 represent a C1-4 alkyl group, or a C2-5 acyl group, with one of these including an acyl group, and R2 represents a C2-4 alkylene group), and the low-temperature-side critical solution temperature of the refrigerant and the refrigerator oil is −30°C or less.
Formula 1: R1-(O-R2)n-OR3 . . . (1)
Inventors:
OTA RYO (JP)
AKATA HIROYUKI (JP)
SATO EIJI (JP)
NAKAMURA SATOSHI (JP)
UEDA HIDEYUKI (JP)
NONAKA MASAYUKI (JP)
ISEKI TAKASHI (JP)
AKATA HIROYUKI (JP)
SATO EIJI (JP)
NAKAMURA SATOSHI (JP)
UEDA HIDEYUKI (JP)
NONAKA MASAYUKI (JP)
ISEKI TAKASHI (JP)
Application Number:
PCT/JP2015/081868
Publication Date:
July 21, 2016
Filing Date:
November 12, 2015
Export Citation:
Assignee:
JOHNSON CONTROLS HITACHI AIR CONDITIONING TECHNOLOGY HONG KONG LTD (CN)
International Classes:
F25B1/00; C09K5/04; C10M107/34; F25B1/04; C10N30/06; C10N40/30
Domestic Patent References:
| WO2013129579A1 | 2013-09-06 |
Foreign References:
| JP2013014673A | 2013-01-24 | |||
| JP2014037928A | 2014-02-27 | |||
| JPH08240351A | 1996-09-17 | |||
| JP2002130125A | 2002-05-09 | |||
| JP2007046582A | 2007-02-22 | |||
| JP2015071742A | 2015-04-16 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P. C. (JP)
Patent business corporation Isono international patent trademark office (JP)
Patent business corporation Isono international patent trademark office (JP)
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