US3743256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for evaporative cooling towers with wetted walls
Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1971-08-05
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Granted: 1973-07-03
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Expires: 1991-08-05
Abstract
Abstract A wetted wall structure for use in a cooling tower of the evaporative type wherein water flowed downwardly over the walls arranged vertically is cooled by air flowing between the walls comprises, for each wetted wall, a vertical splash-plate to the bottom edge of which is attached a non-woven grid consisting of parallel spaced vertical rods and parallel spaced horizontal rods. The water to be cooled issues from one or more supply pipes, depending upon the width of the splash-plate, its velocity and the angle of impingement on the plate, spreads gradually as it flows downwardly over the plate and thence flows downwardly over the grid in an unbroken film.
Inventors
- 👤 G Oplatka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:00
CPC Classifications
F; F28; F28F; F28F25/00; F28F25/02; F28F25/08; F28F25/087; F28F25/06; Y; Y10; Y10S; Y10S261/00; Y10S261/11; Y10S261/72
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
77 words
A wetted wall structure for use in a cooling tower of the evaporative type which comprises a substantially vertically arranged splash-plate, a grid constituted by a non-woven assembly of parallel spaced vertical and horizontal rods depending from the lower edge of said splash-plate, and means forming a downward flow of water spread over the surface of said splash-plate and which is then flowed downwardly over the surface of said grid in the form of an unbroken film.
Claim 2
Dependent Claim
77 words
A wetted wall structure for use in a cooling tower of the evaporative type which comprises a substantially vertically arranged splash-plate, a grid constituted by a non-woven assembly of parallel spaced vertical and horizontal rods depending from the lower edge of said splash-plate, and means forming a downward flow of water spread over the surface of said splash-plate and which is then flowed downwardly over the surface of said grid in the form of an unbroken film.
Claim 3
Dependent Claim
26 words
A wetted wall structure as defined in claim 1 wherein said grid is constituted by arrays of rectilinear vertical and horizontal rods secured to each other.
Claim 4
Dependent Claim
44 words
A wetted wall structure as defined in claim 1 wherein said means for forming the downward flow of water over the surface of said splash-plate is constituted by water supply pipe means directing water onto the surface of said splash-plate at an acute angle.
Claim 5
Dependent Claim
53 words
A wetted wall structure as defined in claim 3 wherein one water supply pipe is utilized for said splash-plate and is directed onto the surface of the splash-plate at a point equidistant from the side edges thereof so as to spread gradually across the entire width of the splash-plate as it flows downwardly.
Claim 6
Dependent Claim
28 words
A cooling tower comprising A plurality of wetted wall structures each as defined in claim 4 and which are arranged in the tower according to a geometrical configuration.
Claim 7
Dependent Claim
24 words
A cooling tower as defined in claim 5 wherein said wetted wall structures are arranged radially in the tower relative to the tower axis.
Claim 8
Dependent Claim
19 words
A cooling tower as defined in claim 6 wherein said wetted wall structures are arranged along continuous radial lines.
Claim 9
Dependent Claim
39 words
A cooling tower as defined in claim 5 wherein said wetted wall structures are arranged along radial lines, the wall structures along one radial line being staggered with relation to the wall structures located along an adjacent radial line.
Claim 10
Dependent Claim
40 words
A cooling tower as defined in claim 5 wherein said wetted wall structures are arranged along essentially radial lines in relation to the tower axis but wherein the wetted wall structures along each line are set zig-zag to each other.
Claim 11
Dependent Claim
27 words
A cooling tower as defined in claim 5 wherein said wetted wall structures are arranged in said tower along volute lines in relation to the tower axis.
References Cited (Backward Citations)
US2194711A
Cited
US2424248A
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US2405594A
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US3416775A
Cited
US3468521A
Cited
US3643931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |