Title:
冷凍装置
Document Type and Number:
Japanese Patent JP4836305
Kind Code:
B2
Abstract:
Moisture in a refrigeration circuit is absorbed by means of a polyvinyl ether oil that has hygroscopicity and serves as a refrigerating machine oil. Therefore, even if a compressor comes to have an elevated temperature attributed to the employment of a refrigerant made of a single substance of R32, the insulating film of the built-in motor of the compressor is hard to hydrolyze. Moreover, by setting a saturated moisture amount of polyvinyl ether at a temperature of 30 DEG C and a relative humidity of 80% to 5000 ppm or more, a tensile strength retention rate of the motor insulating film made of PET or PEN, which can easily be processed, can be set to 50% or more, by which the deterioration of the insulating film can be prevented. Therefore, the performance of the refrigerating apparatus can be stabilized for a long term by avoiding the breakdown of the compressor.
Inventors:
Hideki Matsuura
Application Number:
JP2000037914A
Publication Date:
December 14, 2011
Filing Date:
February 16, 2000
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
F04B39/00; F25B1/00; C09K5/04; C10M107/24; C10M171/00; F04B39/02; F04B39/16; F25B31/00; H02K3/30; C10N40/30; F25B9/00
Domestic Patent References:
| JP10338891A | ||||
| JP109139A | ||||
| JP8135572A | ||||
| JP10281064A |
Attorney, Agent or Firm:
Hiroshi Yamazaki
Mitsuo Tanaka
Yukinori Nakakura
Mitsuo Tanaka
Yukinori Nakakura