US3595299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the evaporation of low-temperature liquefied gases
Assignee: Linde GmbH
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Filing: 1969-07-28
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Granted: 1971-07-27
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Expires: 1989-07-28
Abstract
Abstract An apparatus for the evaporation of low-temperature liquefied gases which comprises a tube bundle immersed in a water bath which may be heated by steam. The tubes of the bundle each contain a plurality of turbulence-inducing baffles which are soldered or welded to the inner surface of the tube and are of plane undulating, zigzag or coiled configuration. Successive baffles may be angularly offset about the axis of the tube from one another.
Inventors
- 👤 Josef Weishaupt
- 👤 Hans Waldman
- 👤 Thomas Haring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:22
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/0206; F28D1/0213; F17; F17C; F17C9/00; F17C9/02; F28D9/00; F28D9/0031; F28F; F28F1/00; F28F1/10; F28F1/42; F28F1/422; F28F13/00; F28F13/06; F28F13/12; F28F9/00; F28F9/24; F17C2201/00; F17C2201/01; F17C2201/0138; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0609; F17C2203/0634; F17C2203/0636; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2227/00; F17C2227/03; F17C2227/0302; F17C2227/0309; F17C2227/0311; F17C2227/0316
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
49 words
The evaporator defined in claim 1 wherein said heating medium is at least in part constituted by a water bath and said baffle members are generally helical members contacting the inner wall of said tube at least at longitudinally spaced locations therealong and affixed thereto at regions of contact.
Claim 2
Dependent Claim
42 words
The evaporator defined in claim 2 wherein said baffle members are sheet metal band of undulating configuration, said band having an amplitude between the crests of successive half-cycle undulations ranging between 10 and 45 percent of the internal diameter of said tube.
Claim 3
Dependent Claim
22 words
The evaporator defined in claim 3 wherein said amplitude ranges between 30 and 35 percent of the internal diameter of said tube.
Claim 4
Dependent Claim
23 words
The evaporator defined in claim 1 wherein said baffle members have the form of angularly bent sheet metal bands having substantially planar surfaces.
Claim 5
Dependent Claim
43 words
The evaporator defined in claim 5 wherein said baffle members each are of Z-shaped configuration with a pair of mutually parallel flanges lying along chords of the interior of said tube and a web connecting said flanges and lying along the tube diameter.
Claim 6
Dependent Claim
49 words
The evaporator defined in claim 2 wherein said baffle member is composed of a ribbon of sheet metal and has its folds parallel to the tube axis, the dimension of the sheet metal baffle member parallel to the tube axis not exceeding twice the internal diameter of said tube.
Claim 7
Dependent Claim
30 words
The evaporator defined in claim 7 wherein the dimension of the sheet metal baffle members parallel to the tube axis is about 0.3 times the inner diameter of the tube.
Claim 8
Dependent Claim
34 words
The evaporator defined in claim 2 wherein said tube is formed at its exterior with formations increasing the surface area of said tube in contact with said heating medium by at most 600 percent.
Claim 9
Dependent Claim
27 words
The evaporator defined in claim 1 wherein said formations are transverse fins increasing the surface area of the exterior of said tube by 100 to 400 percent.
Claim 10
Dependent Claim
54 words
The evaporator defined in claim 2 wherein at least two such tubes in mutually parallel relationship form a tube bundle, the means for removing vapor being formed as an outlet manifold at said other end of said tube and said means for introducing liquid into the interior of said tube forming an inlet manifold.
Claim 11
Dependent Claim
19 words
The evaporator defined in claim 11 wherein said tubes of said tube bundle are oriented horizontally in said vessel.
Claim 12
Dependent Claim
19 words
The evaporator defined in claim 11 wherein said tubes of said tube bundle are oriented vertically in said vessel.
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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) | 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 |