Patent US3892546A successfully refreshed from Google Patents.
US3892546A
Expired / Lapsed
US
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Electrostatic precipitator
Assignee: Rust Engineering Co
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Filing: 1974-05-31
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Granted: 1975-07-01
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Expires: 1994-05-31
Abstract
Abstract An electrostatic precipitator in which the gas flow passage converges in height and diverges in width from inlet to outlet, but is of constant cross-sectional area throughout its entire length. The aspect ratio is constant for one direction of gas flow. The precipitator is divided by discharge electrodes into a number of gas flow sub-passages. Each sub-passage is of constant cross-sectional area and constant aspect ratio.
Inventors
- 👤 Charles P Grisell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:49
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/01; B03C3/011
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
97 words
A gas flow passage for an electrostatic precipitator comprising a bottom panel, a top panel, a pair of opposed side panels joined to said top panel and said bottom panel to define a gas flow passage having an inlet and an outlet, the height of each of said side panels diminishing from said inlet to said outlet at such a rate as to maintain constant the aspect ratio, which is defined as the ratio between the distance from a point of measurement to the outlet along the length of the precipitator, and the height at said point.
Claim 2
Dependent Claim
97 words
A gas flow passage for an electrostatic precipitator comprising a bottom panel, a top panel, a pair of opposed side panels joined to said top panel and said bottom panel to define a gas flow passage having an inlet and an outlet, the height of each of said side panels diminishing from said inlet to said outlet at such a rate as to maintain constant the aspect ratio, which is defined as the ratio between the distance from a point of measurement to the outlet along the length of the precipitator, and the height at said point.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 wherein the width of said gas flow passage increases from said inlet to said outlet.
Claim 4
Dependent Claim
21 words
The apparatus of claim 2 wherein the cross-sectional area of said gas passage remains constant from said inlet to said outlet.
Claim 5
Dependent Claim
48 words
The apparatus of claim 3 further comprising a secondary gas passage attached to said gas passage at the outlet thereof, the cross-sectional area of said secondary gas passage being equal to the cross-sectional area of said gas passage and constant throughout the length of said secondary gas passage.
Claim 6
Dependent Claim
39 words
The apparatus of claim 1 further comprising means dividing said gas passage into a plurality of sub-passages for at least a portion of the length thereof, each of said sub-passages having a constant aspect ratio throughout the length thereof.
Claim 7
Dependent Claim
35 words
The apparatus of claim 5 wherein said gas passage has a constant cross-sectional area between said inlet and said outlet, wherein each of said sub-passages has a constant cross-sectional area throughout the entire length thereof.
Claim 8
Dependent Claim
82 words
AN ELECTROSTATIC PRECIPITATOR COMPRISING: A GAS PASSAGE DEFINED BY A TOP PANEL, A BOTTOM PANEL, AND A PAIR OF OPPOSED SIDE PANELS ATTACHED TO SAID TOP PANEL AND SAID BOTTOM PANEL AND HAVING AN INLET AND AN OUTLET, SAID TOP PANEL AND SAID BOTTOM PANEL CONVERGING FROM SAID INLET TO SAID OUTLET SUCH THAT THE ASPECT RATIO REMAINS CONSTANT FROM SAID INLET TO SAID OUTLET, DISCHARGE ELECTRODE MEANS POSITIONED IN SAID GAS PASSAGE, AND COLLECTION ELECTRODE MEANS POSITIONED IN SAID GAS PASSAGE.
Claim 9
Dependent Claim
82 words
AN ELECTROSTATIC PRECIPITATOR COMPRISING: A GAS PASSAGE DEFINED BY A TOP PANEL, A BOTTOM PANEL, AND A PAIR OF OPPOSED SIDE PANELS ATTACHED TO SAID TOP PANEL AND SAID BOTTOM PANEL AND HAVING AN INLET AND AN OUTLET, SAID TOP PANEL AND SAID BOTTOM PANEL CONVERGING FROM SAID INLET TO SAID OUTLET SUCH THAT THE ASPECT RATIO REMAINS CONSTANT FROM SAID INLET TO SAID OUTLET, DISCHARGE ELECTRODE MEANS POSITIONED IN SAID GAS PASSAGE, AND COLLECTION ELECTRODE MEANS POSITIONED IN SAID GAS PASSAGE.
Claim 10
Dependent Claim
75 words
The electrostatic precipitator of claim 7 wherein said side panels diverge from said inlet to said outlet, and wherein said collection electrode means comprises at least one collection electrode panel extending from said top panel to said bottom panel along at least a portion of the length of said gas passage and dividing said gas passage into a plurality of sub-passages, each of said sub-passages having a constant aspect ratio for the entire length thereof.
Claim 11
Dependent Claim
34 words
The electrostatic precipitator of claim 8 wherein said side panels diverge from said inlet to said outlet, and wherein the cross-sectional area of said gas passage is constant from said inlet to said outlet.
Claim 12
Dependent Claim
63 words
The electrostatic precipitator of claim 9 wherein said collection electrode means comprises at least one collection electrode panel extending from said top panel to said bottom panel along at least a portion of the length of said gas passage and dividing said gas passage into a plurality of sub-passages, each of said sub-passages having a constant aspect ratio for the entire length thereof.
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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |