Patent US3707337A successfully refreshed from Google Patents.
US3707337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid seal compressors
Assignee: Siemen and Hinsch GmbH
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Filing: 1971-02-23
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Granted: 1972-12-26
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Expires: 1991-02-23
Abstract
Abstract A liquid seal compressor has a vaned impeller which runs on one side of a distribution plate so that the cellular chambers between the vanes sweep a zone on said plate. Inlet and outlet apertures for working fluid and sealing liquid are formed within said zone in said plate. The edge between the radially outer boundary of the outlet aperture and the side of said plate facing the impeller is rounded or bevelled and preferably a narrow straight edge or chamfer is formed from said side of the plate to the start of the rounded or bevelled portion.
Inventors
- 👤 Udo Segebrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:38
CPC Classifications
F; F04; F04C; F04C19/00; F04C19/005; F04C19/007
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
In a liquid seal compressor comprising at least one vaned impeller having cellular chambers defined by the vanes thereof, at least one distribution plate onto which said cellular chambers open and having on one side a zone swept by said chambers, said distribution plate being axially beside said impeller and having and inflow aperture and an outflow aperture within said swept zone, said outflow aperture defined by radially inner and outer boundary edges the improvement that said radially outer boundary edge of said outflow aperture is bevelled-off at said one side of the distribution plate whereby when the compressor operates at a high pressure ratio there is substantially no cavitation at the outflow aperture.
Claim 2
Dependent Claim
114 words
In a liquid seal compressor comprising at least one vaned impeller having cellular chambers defined by the vanes thereof, at least one distribution plate onto which said cellular chambers open and having on one side a zone swept by said chambers, said distribution plate being axially beside said impeller and having and inflow aperture and an outflow aperture within said swept zone, said outflow aperture defined by radially inner and outer boundary edges the improvement that said radially outer boundary edge of said outflow aperture is bevelled-off at said one side of the distribution plate whereby when the compressor operates at a high pressure ratio there is substantially no cavitation at the outflow aperture.
Claim 3
Dependent Claim
113 words
In a liquid seal compressor comprising: at least one vaned impeller having cellular chambers defined by the vanes thereof, at least one distribution plate onto which said cellular chambers open and having on one side a zone swept by said chambers, said distribution plate being axially beside said impeller, and having an inflow aperture and an outflow aperture within said swept zone, said outflow aperture defined by radially inner and outer boundary edges the improvement that said radially outer boundary edge of said outflow aperture is rounded-off at said one side of the distribution plate whereby when the compressor operates at a high pressure there is substantially no cavitation at the outflow aperture.
Claim 4
Dependent Claim
113 words
In a liquid seal compressor comprising: at least one vaned impeller having cellular chambers defined by the vanes thereof, at least one distribution plate onto which said cellular chambers open and having on one side a zone swept by said chambers, said distribution plate being axially beside said impeller, and having an inflow aperture and an outflow aperture within said swept zone, said outflow aperture defined by radially inner and outer boundary edges the improvement that said radially outer boundary edge of said outflow aperture is rounded-off at said one side of the distribution plate whereby when the compressor operates at a high pressure there is substantially no cavitation at the outflow aperture.
Claim 5
Dependent Claim
121 words
In a liquid seal compressor comprising: at least one vaned impeller having cellular chambers defined by the vanes thereof, at least one distribution plate onto which said cellular chambers open and having on one side a zone swept by said chambers, an inflow aperture in said distribution plate, and an outflow aperture in said distribution plate within said swept zone, said outflow aperture defined by radially inner and outer boundary edges the improvement that said radially outer boundary edge of said outflow aperture is bevelled off at said one side of the distribution plate and a narrow straight edge extends at said radially outer boundary edge from said one side of the distribution plate to the beginning of the bevelled position.
Claim 6
Dependent Claim
121 words
In a liquid seal compressor comprising: at least one vaned impeller having cellular chambers defined by the vanes thereof, at least one distribution plate onto which said cellular chambers open and having on one side a zone swept by said chambers, an inflow aperture in said distribution plate, and an outflow aperture in said distribution plate within said swept zone, said outflow aperture defined by radially inner and outer boundary edges the improvement that said radially outer boundary edge of said outflow aperture is bevelled off at said one side of the distribution plate and a narrow straight edge extends at said radially outer boundary edge from said one side of the distribution plate to the beginning of the bevelled position.
Claim 7
Dependent Claim
121 words
In a liquid seal compressor comprising: at least one vaned impeller having cellular chambers defined by the vanes thereof, at least one distribution plate onto which said cellular chambers open and having on one side a zone swept by said chambers, an inflow aperture in said distribution plate, and an outflow aperture in said distribution plate within said swept zone, said outflow aperture defined by radially inner and outer boundary edges, the improvement that said radially outer boundary edge of said outflow aperture is rounded off at said one side of the distribution plate and a narrow straight edge extends at said radially outer boundary edge from said one side of the distribution plate to the beginning of the rounded portion.
Claim 8
Dependent Claim
121 words
In a liquid seal compressor comprising: at least one vaned impeller having cellular chambers defined by the vanes thereof, at least one distribution plate onto which said cellular chambers open and having on one side a zone swept by said chambers, an inflow aperture in said distribution plate, and an outflow aperture in said distribution plate within said swept zone, said outflow aperture defined by radially inner and outer boundary edges, the improvement that said radially outer boundary edge of said outflow aperture is rounded off at said one side of the distribution plate and a narrow straight edge extends at said radially outer boundary edge from said one side of the distribution plate to the beginning of the rounded portion.
References Cited (Backward Citations)
US2025959A
Cited
US3228587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |