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Title:
COMPRESSOR AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2013/187084
Kind Code:
A1
Abstract:
Provided is a compressor which comprises a compression chamber having a sliding portion and in which difluoromethane which is a refrigerant and a refrigerating machine oil are enclosed, wherein the refrigerating machine oil contains two prescribed types of polyol ester oils (a first polyol ester oil and a second polyol ester oil) and contains 20 mol% or more of the second polyol ester oil. The lower temperature side critical solution temperature of the mixture of the refrigerant and the first polyol ester oil and the second polyol ester oil is +10°C or less. The refrigerating machine oil further contains a compression portion sealing agent which has a kinematic viscosity at 40°C of over 180 mm2/s and which is contained in an amount of 1 to 30 parts by weight with respect to 100 parts by weight of the mixture. The kinematic viscosity of the refrigerating machine oil at 40°C is 30 to 90 mm2/s. According to the above, refrigerant leakage can be suppressed and efficiency of the compressor can be improved.

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Inventors:
OTA RYO (JP)
ISEKI TAKASHI (JP)
ARAKI KUNINARI (JP)
MURAKAMI AKIHIRO (JP)
TAKAFUJI RYOICHI (JP)
Application Number:
PCT/JP2013/053351
Publication Date:
December 19, 2013
Filing Date:
February 13, 2013
Export Citation:
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Assignee:
HITACHI APPLIANCES INC (JP)
International Classes:
C10M169/04; C09K5/04; F04B39/00; F25B1/00; F25B1/04; C10M105/38; C10M129/72; C10M129/78; C10M143/00; C10N20/02; C10N20/04; C10N30/00; C10N40/30
Foreign References:
JP2012031239A2012-02-16
JP2002129178A2002-05-09
JPH06322386A1994-11-22
JP2012052135A2012-03-15
JP2000008072A2000-01-11
JPH10298572A1998-11-10
JPH09208980A1997-08-12
Attorney, Agent or Firm:
POLAIRE I. P. C. (JP)
Polaire Intellectual Property Corporation (JP)
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