US3707830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclone separator
Assignee: Bahco Ventilation AB
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Filing: 1971-05-18
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Granted: 1973-01-02
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Expires: 1991-05-18
Abstract
Abstract A cyclone separator having a cylindrical shell with a conical converging inlet portion. A ring of guide vanes is positioned within the outlet to impart a rotational flow to the entering gas and are axially moveable. At the opposite end of the shell a central tube extends through the end wall more than halfway into the shell, the tube having longitudinal slots tapered towards their free ends, the width being 20 to 40 percent of the diameter of the tube.
Inventors
- 👤 K Gustavsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:50
CPC Classifications
B; B04; B04C; B04C3/00; B04C3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
226 words
A dust separator of cyclone type, comprising a substantially cylindrical shell having at one end thereof a conically converging inlet portion, a ring of guide vanes adapted to impart rotation to a flow of gas entering through said inlet portion disposed axially displaceable within said inlet portion, the guide vanes having an outer conical contour complementary to the conical shape of said inlet portion, control means for displacing said guide vane ring axially within said inlet portion to various positions adjacent said inlet portion to vary the rotational movement imparted to the entering gas flow, an end wall closing the end of said cylindrical shell opposite to the end carrying said inlet portion, said end-wall having adjacent its periphery one or more apertures for discharge of dust, a central tube for the outflow of purified gas extending through said end-wall and coaxially along the axis of said cylindrical shell for a distance not less than half the axial length of said cylindrical shell, said central tube having in its periphery at least one substantially longitudinal slot which widens progressively from said end-wall to the free end of said central tube facing the guide vane ring, the totAL width of the slots at said free end of the central tube being at least 20 percent and not above 40 percent of the diameter of the central tube.
Claim 2
Dependent Claim
226 words
A dust separator of cyclone type, comprising a substantially cylindrical shell having at one end thereof a conically converging inlet portion, a ring of guide vanes adapted to impart rotation to a flow of gas entering through said inlet portion disposed axially displaceable within said inlet portion, the guide vanes having an outer conical contour complementary to the conical shape of said inlet portion, control means for displacing said guide vane ring axially within said inlet portion to various positions adjacent said inlet portion to vary the rotational movement imparted to the entering gas flow, an end wall closing the end of said cylindrical shell opposite to the end carrying said inlet portion, said end-wall having adjacent its periphery one or more apertures for discharge of dust, a central tube for the outflow of purified gas extending through said end-wall and coaxially along the axis of said cylindrical shell for a distance not less than half the axial length of said cylindrical shell, said central tube having in its periphery at least one substantially longitudinal slot which widens progressively from said end-wall to the free end of said central tube facing the guide vane ring, the totAL width of the slots at said free end of the central tube being at least 20 percent and not above 40 percent of the diameter of the central tube.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |