Title:
圧縮機及び空調装置
Document Type and Number:
Japanese Patent JP5872387
Kind Code:
B2
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.
Inventors:
Akira Ota
Takashi Iseki
Kunisei Araki
Akira Murakami
Ryoichi Takafuji
Takashi Iseki
Kunisei Araki
Akira Murakami
Ryoichi Takafuji
Application Number:
JP2012135295A
Publication Date:
March 01, 2016
Filing Date:
June 15, 2012
Export Citation:
Assignee:
Hitachi Appliances, Inc.
International Classes:
F25B1/00; C09K5/04; C10M105/38; C10M169/04; F04B39/04; F25B1/04
Domestic Patent References:
| JP2012031239A | ||||
| JP2002129178A | ||||
| JP6322386A |
Attorney, Agent or Firm:
Isono International Patent and Trademark Office