Search International and National Patent Collections

1. (WO2018101246) REFRIGERANT COMPRESSOR AND REFRIGERATION/COLD STORAGE APPLIANCE IN WHICH SAME IS USED

Pub. No.:    WO/2018/101246    International Application No.:    PCT/JP2017/042575
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Wed Nov 29 00:59:59 CET 2017
IPC: F04B 39/00
Applicants: PANASONIC APPLIANCES REFRIGERATION DEVICES SINGAPORE
パナソニック アプライアンシズ リフリジレーション デヴァイシズ シンガポール
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
パナソニックIPマネジメント株式会社
Inventors: HAYASHI, Yasushi
林 康司
KAWABATA, Hirotaka
川端 淳太
ISHIDA, Yoshinori
石田 貴規
OYAGI, Shingo
大八木 信吾
IDE, Terumasa
井出 照正
YAGI, Akio
八木 章夫
AKASHI, Hironari
明石 浩業
HAYASHI, Hiroto
林 寛人
YOKOTA, Kazuhiro
横田 和宏
TORIMASU, Hiroki
取枡 宏樹
Title: REFRIGERANT COMPRESSOR AND REFRIGERATION/COLD STORAGE APPLIANCE IN WHICH SAME IS USED
Abstract:
Inside a sealed container (101) of a refrigerant compressor (100), lubricating oil (103) having a kinematic viscosity at 40°C of 0.1 mm2/S to 5.1 mm2/S is stored, and an electric element (106) and a compression element (107) are accommodated. The compression element (107) is provided with, as a shaft part, a crankshaft (108) comprising a main shaft (109) and an eccentric shaft (110), and as bearing parts, a main bearing (114) that axially supports the main shaft (109) and an eccentric bearing (119) that axially supports the eccentric shaft (110). At least one surface of the main shaft (109) and the eccentric shaft (110) is subjected to a surface treatment, e.g., formation of an oxide film, having a hardness equal to or greater than that of a bearing part (the main bearing (114) or the eccentric bearing (119)). Satisfactory reliability in sliding parts can thereby be achieved even if lubricating oil having lower viscosity is used.