US3850816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclone
Assignee: Siemens AG
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Filing: 1973-12-05
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Granted: 1974-11-26
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Expires: 1993-12-05
Abstract
Abstract Cyclone for separating specifically heavier substance from flowing media containing the substance includes a cylindrical part, a conical part connected to said cylindrical part, and an inlet duct for the flowing media communicating at an end thereof with the cylindrical part, the end of the inlet duct being generally in the form of a venturi nozzle and including in succession a continuously narrowing first duct part, a second duct part of uniform cross section connected thereto, and a continuously widening third duct part connected to the second duct part, the second duct part having a cross sectional area of at most 0.05 D2, where D is the diameter of the cylindrical part, at least the second and third duct parts being curved spirally about the axis of the cylindrical part and being connected to the cylindrical part so as to supply the flowing media in substantially tangential direction into the cylindrical part.
Inventors
- 👤 C Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:54
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/08; B04C5/081; B04C5/02; B04C5/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
169 words
A cyclone structure for separating specifically a heavier substance from a flowing medium containing such substance, comprising: a cylindrical member, a conical member connected to said cylindrical member, an inlet duct in communication with said cylindrical member for the passage of said medium containing said substance therethrough, said inlet duct having an end portion generally in the form of a venturi nozzle and including, in succession, a continuously narrowing first duct portion, a second duct portion of uniform cross section being connected to said first duct portion, and a continuously widening third duct portion connected to said second duct portion, said second duct portion having the narrowest cross-section namely, a maximum cross-sectional area of 0.05 D2, where D is the diameter of said cylindrical member and at least said second and third duct portions respectively being curved spirally about the axis of and connected to said cylindrical member so as to supply said flowing medium containing such substance, in substantially tangential direction into said cylindrical member of said structure.
Claim 2
Dependent Claim
169 words
A cyclone structure for separating specifically a heavier substance from a flowing medium containing such substance, comprising: a cylindrical member, a conical member connected to said cylindrical member, an inlet duct in communication with said cylindrical member for the passage of said medium containing said substance therethrough, said inlet duct having an end portion generally in the form of a venturi nozzle and including, in succession, a continuously narrowing first duct portion, a second duct portion of uniform cross section being connected to said first duct portion, and a continuously widening third duct portion connected to said second duct portion, said second duct portion having the narrowest cross-section namely, a maximum cross-sectional area of 0.05 D2, where D is the diameter of said cylindrical member and at least said second and third duct portions respectively being curved spirally about the axis of and connected to said cylindrical member so as to supply said flowing medium containing such substance, in substantially tangential direction into said cylindrical member of said structure.
Claim 3
Dependent Claim
27 words
A cyclone structure according to claim 1, having said continuously narrowing first duct portion of said inlet duct also curved in a spiral around said cylindrical member.
Claim 4
Dependent Claim
29 words
A cyclone structure according to claim 1, wherein said second duct portion of uniform cross section and said continuously widening third duct portion respectively merge into rectangular cross sections.
Claim 5
Dependent Claim
77 words
A cyclone structure according to claim 3, wherein: said end portion of said inlet duct is provided with an inner and an outer wall, said outer wall extending spirally around the wall of said cylindrical member and merging tangentially therewith, said inner wall corresponding substantially with said wall of said cylindrical member and, partially extending in the radial direction into the interior of said cylindrical member at the end of said continuously widening said third duct portion.
Claim 6
Dependent Claim
62 words
A cyclone structure according to claim 1, wherein said diameter D of said cylindrical member measured in cm is equal, substantially, to Square Root V, wherein V is the flow rate of said flowing medium through said cyclone structure in m3/hr, and said first, second and third duct portions extend spirally almost completely about said cylindrical member before entering said cylindrical member.
References Cited (Backward Citations)
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Cited
US3129173A
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US3370407A
Cited
US3306461A
Cited
US3413776A
Cited
US3745752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |