EP0137853A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Vane type rotary compressor
Assignee: Nippon Piston Ring Co Ltd
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Filing: 1984-02-22
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Granted: —
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Expires: 2004-02-22
Abstract
Abstract @ A rotary compressor is provided with a rotary sleeve (30) and vanes (16). The sleeve is supported by a pneumatic thin bearing chamber (40) formed between the outer peripheral surface of the sleeve and the inner peripheral surface of a central housing (22). The air in a discharge chamber or a discharge-side working chamber (43) is introduced into the pneumatic bearing chamber through an inlet (71). Since a pocket (73) is cut in the inner peripheral surface of the central housing, the pneumatic bearing chamber has a high load-bearing capacity, and it is also possible to prevent scuffing between the sleeve and the central housing.
Inventors
- 👤 Hiroshi Sakamaki
- 👤 Yukio Horikoshi
- 👤 Kikuji Yanagihashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 13:44
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/30; F04C18/34; F04C18/344; F04C18/348
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
133 words
A vane-type rotary compressor comprisilng a center housing (22), a rotary sleeve (30) mounted in said center housing for rotation with a plurality of vanes (16) movably fitted in a rotor (10) which is eccentrically disposed in said rotary sleeve, an air-bearing room (40) defined between the outer periphery of said rotary sleeve and the inner periphery of said center housing, characterised in that an inlet port (71) is provided in the inner periphery of said center housing and internally connected to the atmosphere, a discharge chamber (41) or a compression working space (43) defined between two adjacent vanes, whereby air is introduced through said inlet port to said air-bearing room to increase air-flowing along contact areas (A, B) in the inner periphery of said center housing which said rotary sleeve may contact.
Claim 2
Dependent Claim
133 words
A vane-type rotary compressor comprisilng a center housing (22), a rotary sleeve (30) mounted in said center housing for rotation with a plurality of vanes (16) movably fitted in a rotor (10) which is eccentrically disposed in said rotary sleeve, an air-bearing room (40) defined between the outer periphery of said rotary sleeve and the inner periphery of said center housing, characterised in that an inlet port (71) is provided in the inner periphery of said center housing and internally connected to the atmosphere, a discharge chamber (41) or a compression working space (43) defined between two adjacent vanes, whereby air is introduced through said inlet port to said air-bearing room to increase air-flowing along contact areas (A, B) in the inner periphery of said center housing which said rotary sleeve may contact.
Claim 3
Dependent Claim
42 words
A vane-type rotary compressor as claimed in claim 1, wherein an outlet port (72) is provided in the inner periphery of said center housing (22) to discharge a part of the air passed by said area (A) from said air-bearing room (40).
Claim 4
Dependent Claim
29 words
A vane-type rotary compressor as claimed in claim 1 or 2, wherein at least a pocket (73, 74) is provided in the inner periphery of said center housing (22).
Claim 5
Dependent Claim
31 words
A vane-type rotary compressor as claimed in claim 3, wherein said pocket (73) is formed on said contact area (A) in the compression side inner periphery of said center housing (22).
Claim 6
Dependent Claim
26 words
A vane-type rotary compressor as claimed in claim 3, wherein said pocket (73) is formed in the suction side inner periphery of said center housing (22).
Claim 7
Dependent Claim
32 words
A vane-type rotary compressor as claimed in claim 3, wherein said inlet port (71) and four pockets (73) situate at the respective apexes of a pentagon coaxial with said center housing (22).
Claim 8
Dependent Claim
52 words
A vane-type rotary compressor as claimed in one of claims 1 to 6, wherein each pocket (74) is provided at either or both positions oppositely, equidistantly apart from a suction side point t which is opposite to a compression side point in which said air-bearing room is subject to the maximum pressure.
References Cited (Backward Citations)
No citation records indexed.
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