Patent US3595308A successfully refreshed from Google Patents.
US3595308A
Expired / Lapsed
US
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Apparatus for cooling liquids
Assignee: Individual
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Filing: 1969-08-01
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Granted: 1971-07-27
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Expires: 1989-08-01
Abstract
Abstract The cooling apparatus is especially advantageous for cooling hot viscous liquids such as hot phosphoric acid. The liquid is contained in a generally cylindrical tank having an axial down draft tube with a pumping propeller therein. The liquid passes over a circular weir at the upper end of the tube and is pumped downwardly by the propeller. At the lower end of the tube, the liquid is deflected outwardly in all radial directions by a generally conical deflector. The liquid is then deflected upwardly by a frustoconical or parabolic deflector. A large number of cooling coils or plates are positioned in radial longitudinal planes in the tank so that the liquid passes upwardly through the spaces between the coils. Cooling water or the like is circulated through the coils between ring-shaped header pipes disposed above the coils. A cylindrical baffle projects downwardly between the weir and the cooling coils so that the liquid must pass under the baffle to get to the weir. The shaft for the propeller passes downwardly through a tube having longitudinal radial vanes which suppress whirling of the liquid above the propeller.
Inventors
- 👤 Lewis H Durbin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:49
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/0206; F28D1/0213; F28D7/00; F28D7/08; F28D9/00; F28D9/0031
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
178 words
A device for cooling a hot viscous liquid or the like, comprising the combination of an upright tank for holding the liquid to be cooled, a downdraft tube dispOsed centrally in said tank, a rotary propeller mounted in said tube for pumping the liquid downwardly therein, a first deflector disposed in said tank below said tube for deflecting the liquid outwardly into the lower portion of said tank, a second deflector spaced outwardly from said first deflector for deflecting the liquid upwardly, a plurality of cooling units disposed in said tank between the outside of said downdraft tube and the inside of said tank so that the liquid passes upwardly along said cooling units before being recirculated by said propeller, said downdraft tube comprising an upper entrance portion spaced inwardly from said cooling units, and a generally cylindrical baffle extending downwardly between said entrance portion and said cooling units whereby the liquid is required to travel under the lower end of said baffle and then upwardly between said baffle and said entrance portion before entering said downdraft tube.
Claim 2
Independent Claim
178 words
A device for cooling a hot viscous liquid or the like, comprising the combination of an upright tank for holding the liquid to be cooled, a downdraft tube dispOsed centrally in said tank, a rotary propeller mounted in said tube for pumping the liquid downwardly therein, a first deflector disposed in said tank below said tube for deflecting the liquid outwardly into the lower portion of said tank, a second deflector spaced outwardly from said first deflector for deflecting the liquid upwardly, a plurality of cooling units disposed in said tank between the outside of said downdraft tube and the inside of said tank so that the liquid passes upwardly along said cooling units before being recirculated by said propeller, said downdraft tube comprising an upper entrance portion spaced inwardly from said cooling units, and a generally cylindrical baffle extending downwardly between said entrance portion and said cooling units whereby the liquid is required to travel under the lower end of said baffle and then upwardly between said baffle and said entrance portion before entering said downdraft tube.
Claim 3
Dependent Claim
30 words
A device according to claim 1, in which said cooling units comprise cooling coils which radiate outwardly relative to said downdraft tube and are disposed in generally longitudinal radial planes.
Claim 4
Dependent Claim
69 words
A device according to claim 1, in which said cooling units radiate outwardly relative to said downdraft tube and are disposed in generally longitudinal radial planes, said cooling units comprising cooling coils, first and second annular header pipes for carrying a coolant to and from said coils, and inlet and outlet pipes connected to said header pipes, said cooling coils being connected between said first and second header pipes.
Claim 5
Dependent Claim
61 words
A device according to claim 1, including an axial supporting tube extending downwardly into the upper portion of said downdraft tube to support said propeller, a drive shaft rotatably mounted in said supporting tube and connected to said propeller, and a plurality of longitudinal vanes projecting outwardly from said supporting tube to suppress whirling movement of the liquid above said propeller.
Claim 6
Independent Claim
187 words
A device for cooling a hot viscous liquid or the like, comprising the combination of an upright tank for holding the liquid to be cooled, a downdraft tube disposed centrally in said tank, substantially cylindrical baffle means encompassing the entrance area about said drum draft tube, a rotary propeller mounted in said tube for pumping the liquid downwardly therein, a first deflector disposed in said tank below said tube for deflecting the liquid outwardly into the lower portion of said tank, a second deflector spaced outwardly from said first deflector for deflecting the liquid upwardly, a plurality of cooling units disposed in said tank between the outside of said downdraft tube and the inside of said tank so that the liquid passes upwardly between said cooling units before being recirculated by said propeller, an axial supporting tube extending downwardly into the upper portion of said downdraft tube to support said propeller, a drive shaft rotatably mounted in said supporting tube and connected to said propeller, and a plurality of longitudinal vanes projecting outwardly from said supporting tube to suppress whirling movement of the liquid above said propeller.
Claim 7
Independent Claim
187 words
A device for cooling a hot viscous liquid or the like, comprising the combination of an upright tank for holding the liquid to be cooled, a downdraft tube disposed centrally in said tank, substantially cylindrical baffle means encompassing the entrance area about said drum draft tube, a rotary propeller mounted in said tube for pumping the liquid downwardly therein, a first deflector disposed in said tank below said tube for deflecting the liquid outwardly into the lower portion of said tank, a second deflector spaced outwardly from said first deflector for deflecting the liquid upwardly, a plurality of cooling units disposed in said tank between the outside of said downdraft tube and the inside of said tank so that the liquid passes upwardly between said cooling units before being recirculated by said propeller, an axial supporting tube extending downwardly into the upper portion of said downdraft tube to support said propeller, a drive shaft rotatably mounted in said supporting tube and connected to said propeller, and a plurality of longitudinal vanes projecting outwardly from said supporting tube to suppress whirling movement of the liquid above said propeller.
Claim 8
Independent Claim
190 words
A device for cooling a hot viscous liquid or the like, comprising the combination of an upright tank for holding the liquid to be cooled, a downdraft tube disposed centrally in said tank, substantially cylindrical baffle means disposed outwardly of said downdraft tube, a rotary propeller mounted in said tube for pumping the liquid downwardly therein, a first deflector disposed in said tank below said tube for deflecting the liquid outwardly into the lower portion of said tank, a second deflector spaced outwardly from said first deflector for deflecting the liquid upwardly, a plurality of generally flat cooling coils disposed in said tank between the outside of said downdraft tubE and the inside of said tank so that the liquid passes upwardly between said cooling coils before being recirculated by said propeller, said cooling coils radiating outwardly relative to said downdraft tube and being disposed in generally longitudinal radial planes, first and second annular header pipes disposed in said tank above said coils for carrying a coolant to and from said coils, and inlet and outlet pipes connected to said header pipes, said coils being connected between said header pipes.
Claim 9
Independent Claim
190 words
A device for cooling a hot viscous liquid or the like, comprising the combination of an upright tank for holding the liquid to be cooled, a downdraft tube disposed centrally in said tank, substantially cylindrical baffle means disposed outwardly of said downdraft tube, a rotary propeller mounted in said tube for pumping the liquid downwardly therein, a first deflector disposed in said tank below said tube for deflecting the liquid outwardly into the lower portion of said tank, a second deflector spaced outwardly from said first deflector for deflecting the liquid upwardly, a plurality of generally flat cooling coils disposed in said tank between the outside of said downdraft tubE and the inside of said tank so that the liquid passes upwardly between said cooling coils before being recirculated by said propeller, said cooling coils radiating outwardly relative to said downdraft tube and being disposed in generally longitudinal radial planes, first and second annular header pipes disposed in said tank above said coils for carrying a coolant to and from said coils, and inlet and outlet pipes connected to said header pipes, said coils being connected between said header pipes.
References Cited (Backward Citations)
US3504737A
Cited
US3434807A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |