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US3797972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary vane-type gas-compressor
Assignee: Toyota Industries Corp
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Filing: 1971-04-02
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Granted: 1974-03-19
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Expires: 1991-04-02
Abstract
Abstract In a rotary vane-type gas compressor having an outer casing and a stator provided with a rotatable round rotor, a chamber for cooling the stator is formed between the compression side peripheral wall of the stator and the outer casing, a baffle plate is disposed below the stator so as to form a part of the gas passage. The inlet aperture of the casing and the suction port of the cylinder are connected by way of the cooling chamber and the gas passage below the stator. The baffle plate separates oil particles from the gas flow.
Inventors
- 👤 M Hattori
- 👤 S Nakayama
- 👤 M Kurahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:49
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/04; F04C29/02; F04C29/026
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
249 words
In a rotary vane gas compressor having a gas compression cycle for compressing gas: an outer casing having therein means defining an oil reserve chamber containing therein oil during use of the gas compressor; a stator mounted in said outer casing and having therein means defining both a suction intake port defining the beginning of the gas compression cycle for intaking gas and a discharge port defining the termination of the gas compression cycle for discharging compressed gas; a rotor rotatably and eccentrically mountEd in said stator and having therein means defining a plurality of radially extending slots; a plurality of vanes slidably disposed in respective ones of said slots and coacting with said stator during rotation of said rotor to compress the gas delivered to said suction intake port and deliver same as compressed gas to said discharge port; means defining a suction inlet in said outer casing receptive of a gas to be compressed having suspended therein oil particles during use of the gas compressor; means defining a flow chamber disposed between said stator and said oil reserve chamber extending along the compression side outer surface of said stator and providing communication between said suction inlet and said suction intake port; and separating means disposed upstream from said suction intake port for effecting separation of the oil particles from the gas during flow of the gas through said flow chamber and transfer of the oil particles to said oil reserve chamber prior to compression of the gas.
Claim 2
Dependent Claim
249 words
In a rotary vane gas compressor having a gas compression cycle for compressing gas: an outer casing having therein means defining an oil reserve chamber containing therein oil during use of the gas compressor; a stator mounted in said outer casing and having therein means defining both a suction intake port defining the beginning of the gas compression cycle for intaking gas and a discharge port defining the termination of the gas compression cycle for discharging compressed gas; a rotor rotatably and eccentrically mountEd in said stator and having therein means defining a plurality of radially extending slots; a plurality of vanes slidably disposed in respective ones of said slots and coacting with said stator during rotation of said rotor to compress the gas delivered to said suction intake port and deliver same as compressed gas to said discharge port; means defining a suction inlet in said outer casing receptive of a gas to be compressed having suspended therein oil particles during use of the gas compressor; means defining a flow chamber disposed between said stator and said oil reserve chamber extending along the compression side outer surface of said stator and providing communication between said suction inlet and said suction intake port; and separating means disposed upstream from said suction intake port for effecting separation of the oil particles from the gas during flow of the gas through said flow chamber and transfer of the oil particles to said oil reserve chamber prior to compression of the gas.
Claim 3
Dependent Claim
100 words
An improved rotary vane gas compressor according to claim 1, wherein said separating means comprises a plate disposed in said flow chamber between said stator and said oil reserve chamber and comprising a portion of said flow chamber and disposed in the flow path of the gas to effect impacting of the oil particles thereagainst and depositing of the oil particles thereon thereby separating the oil particles from the gas, said plate made of an oil permeable material whereby the oil particles impacted and deposited on said plate are transferred to said oil reserve chamber by permeating through said plate.
Claim 4
Dependent Claim
92 words
An improved rotary vane gas compressor according to claim 1, wherein said separating means comprises a plate disposed in said flow chamber between said stator and said oil reserve chamber and comprising a portion of said flow chamber and disposed in the flow path of the gas to effect impacting of the oil particles thereagainst and depositing of the oil particles thereon thereby separating the oil particles from the gas, said plate having therein means defining a plurality of of apertures for transferring therethrough the oil particles to said oil reserve chamber.
Claim 5
Dependent Claim
46 words
An improved rotary vane gas compressor according to claim 3, wherein said stator has an outside convex surface and said plate comprises a curved plate with a concave surface disposed generally parallel to said convex surface of said stator thereby defining a generally curved flow chamber.
Claim 6
Dependent Claim
45 words
An improved rotary vane gas compressor according to claim 4, wherein said means defining said plurality of apertures comprises means defining a plurality of apertures only in the upstream half of said plate and the other half of said plate is devoid of said apertures.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |