Patent US3775993A successfully refreshed from Google Patents.
US3775993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of evaporative cooling
Assignee: Ruckluft Patent AG
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Filing: 1972-05-31
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Granted: 1973-12-04
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Expires: 1992-05-31
Abstract
Abstract Fluid is cooled by passing it through a horizontally or substantially horizontally elongated coil or tube-bundle heat exchanger unit and flowing cooling water over the surface of the said coil or tube-bundle from a plurality of distribution points spaced from one another along the length of the said coil or tube-bundle, each distribution point supplying water to cover only a predetermined limited portion of the length of the said coil or tube-bundle and recirculating the water from each distribution point over the said limited portion only.
Inventors
- 👤 E Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:11
CPC Classifications
F; F28; F28D; F28D5/00; F28D5/02; Y; Y10; Y10S; Y10S261/00; Y10S261/11
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
132 words
A method of cooling fluid, which comprises passing the fluid to be cooled through a horizontally or substantially horizontally elongated coil or tube-bundle heat exchanger unit and flowing cooling water ovEr the surface of the said coil or tube-bundle from a plurality of distribution points spaced from one another along the length of the said coil or tube-bundle, each distribution point supplying water to cover and flow over only an associated predetermined limited portion of the length of the said coil or tube-bundle, recirculating the water from each distribution point over the said limited portion only, and maintaining the temperature of the recirculated water flowing from each of said distribution points substantially in equilibrium dependent on the temperature of the fluid passing through the respectively associated limited portions of said coil length.
Claim 2
Independent Claim
132 words
A method of cooling fluid, which comprises passing the fluid to be cooled through a horizontally or substantially horizontally elongated coil or tube-bundle heat exchanger unit and flowing cooling water ovEr the surface of the said coil or tube-bundle from a plurality of distribution points spaced from one another along the length of the said coil or tube-bundle, each distribution point supplying water to cover and flow over only an associated predetermined limited portion of the length of the said coil or tube-bundle, recirculating the water from each distribution point over the said limited portion only, and maintaining the temperature of the recirculated water flowing from each of said distribution points substantially in equilibrium dependent on the temperature of the fluid passing through the respectively associated limited portions of said coil length.
Claim 3
Dependent Claim
34 words
A method according to claim 1, in which the recirculation of the cooling water is supplied from a reservoir or sump located beneath each of the said limited portions of the coil or tube-bundle.
Claim 4
Independent Claim
151 words
An apparatus for cooling fluid comprising a horizontally or substantially horizontally elongated coil or tube-bundle heat exchanger for the passage therethrough of fluid to be cooled, a plurality of cooling water distributors located above said coil or tube-bundle at spaced positions along the length thereof, a separate reservoir or sump section located beneath said coil or tube-bundle at each of said positions, means for supplying cooling water from the said reservoir or sump sections to the associated distributors and for causing water from each distributor to flow over and onto the surface of the said coil or tube-bundle over only a predetermined limited portion of the length thereof below the associated distributor, and to collect in the associated sump section and for continuously recirculating the water from the said associated sump section to the pertaining distributors for reflowing over the said limited portion of the length of coil or tube-bundle only.
Claim 5
Independent Claim
151 words
An apparatus for cooling fluid comprising a horizontally or substantially horizontally elongated coil or tube-bundle heat exchanger for the passage therethrough of fluid to be cooled, a plurality of cooling water distributors located above said coil or tube-bundle at spaced positions along the length thereof, a separate reservoir or sump section located beneath said coil or tube-bundle at each of said positions, means for supplying cooling water from the said reservoir or sump sections to the associated distributors and for causing water from each distributor to flow over and onto the surface of the said coil or tube-bundle over only a predetermined limited portion of the length thereof below the associated distributor, and to collect in the associated sump section and for continuously recirculating the water from the said associated sump section to the pertaining distributors for reflowing over the said limited portion of the length of coil or tube-bundle only.
Claim 6
Dependent Claim
18 words
An apparatus according to claim 3, in which each of the cooling water distributors is a water turbine.
Claim 7
Dependent Claim
21 words
An apparatus according to claim 4, in which each water turbine is drivingly coupled to a fan located above the turbine.
Claim 8
Dependent Claim
21 words
An apparatus according to claim 3, in which the means for supplying cooling water to each distributor is a centrifugal pump.
Claim 9
Dependent Claim
18 words
An apparatus according to claim 3, in which the sumps are in communication with each other through weirs.
Claim 10
Dependent Claim
20 words
A method according to claim 2 in which the cooling water effects cooling of the coil or tube-bundle by evaporation.
References Cited (Backward Citations)
US2017027A
Cited
US2498017A
Cited
US2672328A
Cited
FR1039271A
Cited
US2661933A
Cited
US3052105A
Cited
US3141909A
Cited
US3596884A
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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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |