Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1997-06-05
2000-06-06
Vrabllik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 554, 418 556, 418 88, 418 99, F04C 1804, F04C 2902
Patent
active
060711000
ABSTRACT:
A scroll compressor includes a fixed scroll and an orbiting scroll which define therebetween a plurality of compression chambers for compressing fluid introduced via a suction port. The orbiting scroll has a base plate and a shaft portion extending from the base plate toward a crankshaft rotatably supported by a support member. A seal member is disposed between the base plate and the support member to define an inner region and an outer region. The inner region surrounds the shaft portion, while the outer region includes therein a rotation preventing member interposed between the base plate of the orbiting scroll and the support member. The inner region communicates with the outer region via an oil-feed passage formed through the orbiting scroll. The oil-feed passage includes therein a restrictor and opens in the neighborhood of an upper sliding portion between the rotation preventing member and the support member. Thus, lubricating oil supplied to the inner region is fed to the neighborhood of the upper sliding portion via the oil-feed passage for lubrication thereof. The lubricating oil collects downward due to the gravity to achieve lubrication of a lower sliding portion between the rotation preventing member and the support member.
REFERENCES:
patent: 5217359 (1993-06-01), Kawahara et al.
patent: 5645408 (1997-07-01), Fujio et al.
patent: 5695326 (1997-12-01), Oka et al.
patent: 5746586 (1998-05-01), Fukuhara et al.
Hirano Hideo
Kawano Hiroyuki
Morimoto Takashi
Muramatsu Shigeru
Oka Hideto
Matsushita Electric - Industrial Co., Ltd.
Vrabllik John J.
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