Patent US3745784A successfully refreshed from Google Patents.
US3745784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling apparatus with conveyor
Assignee: Air Liquide SA
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Filing: 1971-05-20
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Granted: 1973-07-17
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Expires: 1991-05-20
Abstract
Abstract A method of and apparatus for cooling a body which is a bad conductor of heat, the method consisting of displacing the body from the inlet to the outlet of an elongated cooling zone in a current of a cooling fluid in the gaseous state circulating wholly in said zone in the same direction as that of the displacement of the said body, a difference in temperature being maintained at the inlet of the said zone, between said body and said current at least equal to 150*C. The cooling fluid may be nitrogen and the body to be cooled may be made of an elastomer or polymer material. The apparatus comprises a thermally insulated tunnel, an evaporator for the cooling fluid in the liquid form, comprising a conduit in heat exchange relation with the interior of the tunnel and orifices for the introduction of the fluid in the gaseous state at the inlet of the tunnel.
Inventors
- 👤 M Caillat
- 👤 G Perrin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:53
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/16; A; A23; A23B; A23B2/00; A23B2/80; A23B2/803; A23B2/85; A23B2/88; B29C48/00; B29C48/03; B29C48/06; B29C48/09; B29C48/25; B29C48/88; B29C48/911; F; F25; F25D; F25D3/00; F25D3/10; F25D3/11; B29C2035/1616; B29C2035/1625; B29C2035/165
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
94 words
A cooling device comprising a heat-insulating wall forming a tunnel, means for moving bodies to be cooled through said tunnel, means for conveying a refrigerating liquid in indirect heat exchange in the interior to the tunnel thereby to evaporate the liquid to a vapor, and means for introducing said vapor into the tunnel, said liquid conveying means comprising a conduit of great length constituted by different sections in heat exchange with each other, said conduit being a coil in the form of an annular assembly surrounding at least a part of said moving means.
Claim 2
Dependent Claim
94 words
A cooling device comprising a heat-insulating wall forming a tunnel, means for moving bodies to be cooled through said tunnel, means for conveying a refrigerating liquid in indirect heat exchange in the interior to the tunnel thereby to evaporate the liquid to a vapor, and means for introducing said vapor into the tunnel, said liquid conveying means comprising a conduit of great length constituted by different sections in heat exchange with each other, said conduit being a coil in the form of an annular assembly surrounding at least a part of said moving means.
Claim 3
Dependent Claim
28 words
A coolIng device as claimed in claim 1, in which said coil comprises two portions of opposite pitch displaced lengthwise of the tunnel with respect to each other.
Claim 4
Dependent Claim
130 words
A cooling device comprising a heat-insulating wall forming a tunnel, means for moving bodies to be cooled through said tunnel, means for conveying a refrigerating liquid in indirect heat exchange in the interior of the tunnel thereby to evaporate the liquid to a vapor, and means for introducing said vapor into the tunnel, said liquid conveying means comprising a conduit of great length constituted by different sections in heat exchange with each other, said different sections being in thermal contact with a heat exchange wall inside said tunnel and extending lengthwise of said tunnel, said wall forming part of an envelope in the form of a box enclosing said conduit, said vapor-introducing means opening into the interior of said envelope which in turn communicates with the interior of the tunnel.
Claim 5
Dependent Claim
130 words
A cooling device comprising a heat-insulating wall forming a tunnel, means for moving bodies to be cooled through said tunnel, means for conveying a refrigerating liquid in indirect heat exchange in the interior of the tunnel thereby to evaporate the liquid to a vapor, and means for introducing said vapor into the tunnel, said liquid conveying means comprising a conduit of great length constituted by different sections in heat exchange with each other, said different sections being in thermal contact with a heat exchange wall inside said tunnel and extending lengthwise of said tunnel, said wall forming part of an envelope in the form of a box enclosing said conduit, said vapor-introducing means opening into the interior of said envelope which in turn communicates with the interior of the tunnel.
Claim 6
Dependent Claim
29 words
A cooling device as claimed in claim 3, in which said envelope comprises at least one orifice for the introduction of said vapor into the inlet of the tunnel.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |