Title:
SCROLL COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/1991/006764
Kind Code:
A1
Abstract:
A scroll compressor in which: an annular ring (94) to separate the side of high pressure lubricant space (oil chamber A (78a)) communicating with spiral oil grooves (41a), (41b) formed on the sliding surface of a bearing (18b) for inducing viscosity-pump action and with a main bearing (12) from the side of a back-pressure chamber (39) provided on the side opposite to the compression chamber of a revolving scroll (18) is provided between a main body frame (5) and the revolving scroll (18); and a pressure difference oil feeding passage passing in order through the discharge oil reservoir (34) on which discharge pressure acts, high pressure lubricant space (oil chamber A), back-pressure chamber (39), and compression chamber is formed; whereby lubricant oil can be stably fed to the revolving bearing (18b) and the back-pressure chamber (39) taking advantage of pressure difference, wear of the bearing part can be prevented and a gap can be maintained so as to ensure increase in compression efficiency and durability.
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Inventors:
FUJIO KATSUHARU (JP)
Application Number:
PCT/JP1990/001401
Publication Date:
May 16, 1991
Filing Date:
October 31, 1990
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
International Classes:
F04C18/02; F04C27/00; F04C29/02; F04C29/12; F04C23/00; (IPC1-7): F04C18/02
Foreign References:
| JPH01177482A | 1989-07-13 | |||
| JPS62178791A | 1987-08-05 | |||
| JPS63106387A | 1988-05-11 | |||
| JPS58110885A | 1983-07-01 | |||
| JPS63134187U | 1988-09-02 | |||
| JPS61265302A | 1986-11-25 |
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