Patent US3963810A successfully refreshed from Google Patents.
US3963810A
Expired / Lapsed
US
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Contact body for cooling towers
Assignee: Svenska Flaktfabriken AB
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Filing: 1974-12-16
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Granted: 1976-06-15
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Expires: 1994-12-16
Abstract
Abstract A contact body comprising a sheet of material adapted to be positioned upright on edge within a cooling tower along with a plurality of similar bodies. Water is caused to flow downwardly upon the surfaces of said body, in the preferred embodiment countercurrent to the flow of air through the tower. A fine surface structure on the body consists of corrugations or folds disposed at an angle to the vertical between 65 DEG and 88 DEG . The corrugations have a wave length below 12 mm and an amplitude between 1 and 5 mm. The corrugations are arranged in fields whose angles of inclination alternate successively between positive and negative inclination. The fields may range between 20 and 50 mm and alternate along the vertical extent of the body. They may also alternate along the horizontal extent of the body. Integral spacer elements are pressed out of the body to position adjacent vertical bodies in spaced, generally parallel arrangement. The structure of the body may also be undulating to increase the surface area exposed to the air flow.
Inventors
- 👤 Roy Holmberg
- 👤 Ove Strindehag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:43
CPC Classifications
F; F28; F28F; F28F25/00; F28F25/02; F28F25/08; F28F25/087; B; B01; B01J; B01J19/00; B01J19/32; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/3221; B01J2219/32213; B01J2219/32224; B01J2219/32227; B01J2219/32248; B01J2219/32255; B01J2219/324; B01J2219/32483; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24702
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
155 words
A contact body for water and air, comprising a plurality of contact plates, which stand vertically in parallel and are provided with folds or corrugations constituting a so-called fine structure with a fold height of 1 to 5 mm and a wave length of the folds below 12 mm, characterized in that each contact plate shows a plurality of fine-structured fields both along its extension in the horizontal direction and along its extension in vertical direction, in each field the folds being parallel relative to each other, the folds for two adjacent fine-structured fields both horizontally and vertically having opposite inclination to the vertical plane, the folds in said fields forming an angle to the vertical plane of between 65° and 88° for obtaining a good adhesion and favorable distribution of the water thereby that the surface tension force acting upon the liquid agrees in magnitude closely with the gravity force acting on the liquid.
Claim 2
Dependent Claim
155 words
A contact body for water and air, comprising a plurality of contact plates, which stand vertically in parallel and are provided with folds or corrugations constituting a so-called fine structure with a fold height of 1 to 5 mm and a wave length of the folds below 12 mm, characterized in that each contact plate shows a plurality of fine-structured fields both along its extension in the horizontal direction and along its extension in vertical direction, in each field the folds being parallel relative to each other, the folds for two adjacent fine-structured fields both horizontally and vertically having opposite inclination to the vertical plane, the folds in said fields forming an angle to the vertical plane of between 65° and 88° for obtaining a good adhesion and favorable distribution of the water thereby that the surface tension force acting upon the liquid agrees in magnitude closely with the gravity force acting on the liquid.
Claim 3
Dependent Claim
24 words
A contact body according to claim 1 characterized in that the extension of the field in vertical direction is between 20 and 50 mm.
Claim 4
Dependent Claim
21 words
A contact body according to claim 1, characterized in that the folds of the fine structure are substantially of sinusoidal shape.
Claim 5
Dependent Claim
43 words
A contact body according to claim 3, characterized in that the height of the sinusoidal-shaped folds is between 2 and 3 mm, their wave length is 6 to 8 mm, and their angle of inclination to the vertical plane is 75° to 85°.
Claim 6
Dependent Claim
17 words
A contact body according to claim 1, characterized in that the fine structure folds have triangular shape.
Claim 7
Dependent Claim
17 words
A contact body according to claim 1, characterized in that the fine structure folds have trapezoidal shape.
Claim 8
Dependent Claim
24 words
A contact body according to claim 1, characterized in that the fine structure is in the form of flat contact plates bent into folds.
Claim 9
Dependent Claim
36 words
A contact body according to claim 1, characterized in that the fine structure is applied on contact plates having a base structure consisting of corrugations of a size greater than the folds of the fine structure.
Claim 10
Dependent Claim
24 words
A contact body according to claim 8, characterized in that the height of the corrugations on the base structure is 10 to 30 mm.
Claim 11
Dependent Claim
21 words
A contact body according to claim 1, characterized in that the contact bodies are made of plates of a thermoplastic plastic.
Claim 12
Dependent Claim
25 words
A contact body according to claim 1, characterized in that each contact plate is provided with spacer members constituting an integral part of the plate.
References Cited (Backward Citations)
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US3415502A
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US3286999A
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US3540702A
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US3618778A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |