US3746322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas scrubber
Assignee: Andco Inc
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Filing: 1972-01-03
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Granted: 1973-07-17
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Expires: 1992-01-03
Abstract
Abstract Apparatus for removing particulate material from a gas stream traveling through a duct comprising a pair of members each provided with a corresponding plurality of passages and arranged to cooperatively define a corresponding plurality of venturi passages extending generally parallel to the direction of flow of the gas stream and spaced around the axis of the duct. The members are relatively movable for varying the size of the venturi throats and for completely closing the passages when desired. Opposed sidewalls shaped to cooperatively define each venturi passage are carried by corresponding ones of the movable members whereby the configuration of the venturi passages is maintained throughout the entire range of adjustment. Liquid is supplied to the upstream member and the venturi inlets defined thereby are of a configuration effecting a substantially uniform distribution of the liquid to the passages.
Inventors
- 👤 A Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:29
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/10; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
36 words
Apparatus according to claim 1 wherein each of said first and second members comprises a generally planar portion from which said passage defining walls extend and a peripheral edge portion adjacent the wall of said duct.
Claim 2
Dependent Claim
112 words
Apparatus according to claim 2 wherein each of said sidewalls includes first and second end portions separated by a middle portion disposed generally perpendicular to the planar portions of the corresponding first and second members, said fIrst end portions extending in a direction upstream from said first member and disposed at a relatively acute angle with respect to the direction of the gas stream so as to be converging toward said middle portions, and said second end portions extending in a direction downstream from said second member and disposed at a relatively acute angle with respect to the direction of the gas stream so as to be diverging from said middle portions.
Claim 3
Dependent Claim
63 words
Apparatus according to claim 3 wherein one of each opposed pair of said sidewalls defining each of said venturi passages is moved in its entirety relative to the other thereof between an open position wherein said middle portions are spaced apart to a closed position wherein said middle portions are in contact in response to relative movement of said first and second members.
Claim 4
Dependent Claim
25 words
Apparatus according to claim 1 wherein said members are identical in construction, and are relatively movable between a full open and a full closed position.
Claim 5
Dependent Claim
68 words
Apparatus according to claim 2 wherein said first and second members are disposed generally horizontally in said duct and wherein said liquid delivering means comprises conduit means positioned to deliver liquid to said planar portion of said first member near said peripheral edge portion thereof whereby liquid rises to a level corresponding to the height of said sidewalls and then flows into said passages defined by said walls.
Claim 6
Dependent Claim
61 words
Apparatus according to claim 6 wherein said walls defining each of said venturi passages are positioned relative to each other so as to define passage inlet openings having a configuration which gives rise to a pressure differential between the center of said planar portion and said peripheral edge portion of said first member for distributing liquid substantially uniformly to said passages.
Claim 7
Dependent Claim
35 words
Apparatus according to claim 7 wherein each of said passage inlet openings has spaced apart edges extending generally radially outwardly relative to the center of said planar portion which edges define an acute included angle.
Claim 8
Dependent Claim
115 words
Apparatus according to claim 1 further including: a. first pressure sensing means positioned in said duct upstream from said first member relative to the direction of flow of said gas stream; b. second pressure sensing means positioned in said duct downstream from said second member relative to the direction of flow of said gas stream; and c. control means connected to said first and second sensing means and responsive to the pressure difference measured therebetween, said control means being connected in controlling relation to said means causing relative movement between said first and second members whereby the throats of said venturi passages are varied in response to changes in the pressure drop across said apparatus.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |