US3696636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cooling liquids
Assignee: Individual
•
Filing: 1969-04-14
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Granted: 1972-10-10
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Expires: 1989-04-14
Abstract
Abstract A process for cooling a fluid circulating in contact with one face of a heat exchange wall, by cooling the other face of the wall with a cryogenic liquid sprayed under pressure and by means of residual gases resulting from the evaporation of this liquid. An exchanger for carrying out this process includes a tube placed in a heat-insulated enclosure, in which circulates a fluid to be cooled and on the walls of which a cryogenic liquid is sprayed. The exchanger includes means for placing a cryogenic liquid under pressure and a flow-regulating valve in the pressure line controlled by a thermostat located at the exchanger outlet.
Inventors
- 👤 Gaston M Mille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:40
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/02; F28D7/022; F17; F17C; F17C3/00; F17C3/02; F17C3/08; F17C3/085; F25; F25B; F25B19/00; F25B19/005; F28D7/024; F28D7/10; F28D7/106; F17C2221/00; F17C2221/01; F17C2221/014; F17C2270/00; F17C2270/05; F17C2270/0509; F28D21/00; F28D2021/0019; F28D2021/0033
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
A heat exchanger comprising a cryosat having a central cavity open at one end thereof, a pipe line disposed axially of said cavity and closed at the end opposite said opening, said line being connected at the other end to a source of cryogenic liquid under pressure, said line being pierced over a part of its length with small diameter orifices through which the cryogenic liquid is sprayed, an exchanger coil in which the fluid to be cooled circulates and disposed in the central cavity of said cryostat around said pipe line in sufficiently close proximity with a portion of said pipeline for cryogenic liquid sprayed from said orifices to impinge upon said coil as a liquid for evaporation thereat, and means directing evaporated cryogenic liquid along a further portion of said coil for maximized cooling of fluid circulating through the coil.
Claim 2
Dependent Claim
142 words
A heat exchanger comprising a cryosat having a central cavity open at one end thereof, a pipe line disposed axially of said cavity and closed at the end opposite said opening, said line being connected at the other end to a source of cryogenic liquid under pressure, said line being pierced over a part of its length with small diameter orifices through which the cryogenic liquid is sprayed, an exchanger coil in which the fluid to be cooled circulates and disposed in the central cavity of said cryostat around said pipe line in sufficiently close proximity with a portion of said pipeline for cryogenic liquid sprayed from said orifices to impinge upon said coil as a liquid for evaporation thereat, and means directing evaporated cryogenic liquid along a further portion of said coil for maximized cooling of fluid circulating through the coil.
Claim 3
Dependent Claim
115 words
A heat exchanger according to claim 1 further including means defining an inner chamber and a surrounding communicating annular chamber, said coil being formed of two parts in series, said first part disposed at the end where the fluid to be cooled arrives and formed of physically separated turns arranged in said annular chamber, and a second part disposed in said inner chamber in connection with an exit pipe and formed of contiguous turns of the same diameter arranged around the end of the central pipeline pierced with atomization orifices whereby said liquid evaporates upon striking said second coil part to form cryogenic gas that flows into said annular chamber over said first coil part.
Claim 4
Dependent Claim
134 words
A heat exchanger according to claim 1 in which the coil is constituted of two parts in series, a first part being disposed at the end where the fluid to be cooled arrives, and formed of spaced-apart turns arranged in an annular space which is delimited by the inner wall of a cryostat and a cylindrical screen and a second part being disposed at the end where the cooled fluid leaves and formed of joined turns of the same diameter arranged around the central pipe pierced with atomization orifices, the diameter of the coil being such that the fluid to be cooled circulates in a turbulent reGime and the surface of the first part of the coil is between 40 times and 60 times the total surface of the second part of the coil.
References Cited (Backward Citations)
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Cited
US1658187A
Cited
FR608465A
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FR697375A
Cited
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Cited
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Cited
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Cited
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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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |