Title:
密閉型圧縮機および冷凍サイクル装置
Document Type and Number:
Japanese Patent JP6740105
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a hermetic type compressor having preferable oil return performance while giving stable lubricity to slide members over a long period of time using the coolant containing 20% by mass or more of difluoromethane, 20% by mass or more of pentafluoroethane, 20% by mass or more of 2,3,3,3-terafluoropropene, and 20% by mass or more of 1,1,1,2-terafluoroethane, and polyol ester lube oil as refrigeration oil.SOLUTION: A hermetic type compressor comprises: a compressor part for compressing coolant stored in a closed vessel; an electric motor part for driving the compressor part; and refrigeration oil. The coolant contains: 20% by mass or more of difluoromethane; 20% by mass or more of pentafluoroethane; 20% by mass or more of 2,3,3,3-terafluoropropene; and 20% by mass or more of 1,1,1,2-terafluoroethane. The refrigeration oil uses polyol ester lube oil having a low-temperature side two-layer separation temperature with the coolant of -42°C±5°C.SELECTED DRAWING: Figure 1
Inventors:
Kazuhiko Miura
Tetsunaga Watanabe
Shinobu Fujita
Hasegawa Yudai
Tetsunaga Watanabe
Shinobu Fujita
Hasegawa Yudai
Application Number:
JP2016231174A
Publication Date:
August 12, 2020
Filing Date:
November 29, 2016
Export Citation:
Assignee:
Toshiba Carrier Co., Ltd.
International Classes:
F04C29/00; C09K5/04; C10M105/38; F04B39/02; F04C18/356; F04C29/02; F04C29/04; F25B1/00
Domestic Patent References:
| JP2016153489A | ||||
| JP7070577A | ||||
| JP2016190892A |
Attorney, Agent or Firm:
Suzue International Patent Office