Patent US3700030A successfully refreshed from Google Patents.
US3700030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger support structure
Assignee: Air Liquide SA
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Filing: 1970-07-28
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Granted: 1972-10-24
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Expires: 1990-07-28
Abstract
Abstract The present invention relates to a heat exchanger of the type involving a nest of tubes formed from concentric layers of wound pipes, in which the pipes in each layer are attached, generally near their ends, by being fitted between two successive crowns in a series of crowns, with the inside edge of one crown extending round the outside edge of the crown it fits on to, so as to form a plate reaching out transversally from the core. The pipes in each of the wound layers preferably rest in the concave sections of ridged uprights laid lengthwise along the core, and fitted between each pair of layers, or between the first layer of pipes and the core, the said ridged uprights being attached at their ends to the crowns holding the ends of the pipes. These measures provide a rigid structure, in which the tubes are firmly held in position with respect to the core of the exchanger.
Inventors
- 👤 Maurice Bosquain
- 👤 Marcel Bourjot
- 👤 Maurice Kirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:49
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/06; B21D53/00; B21D53/02; B21D53/027; B21F; B21F27/00; B21F27/12; B21F3/00; B21F3/02; B21F3/04; F; F28; F28D; F28D7/00; F28D7/02; F28D7/024; F28F; F28F9/00; F28F9/007; F28F9/013; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/401; Y10S165/405; Y10S165/414
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
96 words
In a heat exchanger comprising a central core, an outer covering, a nest of tubes in concentric layers between said central core and outer covering, means for distributing fluid to and collecting fluid from opposite ends of said tubes, and means for directing fluid about the exterior of said tubes; the improvement in which said directing means comprises a plurality of concentric crowns disposed one within the other, each said crown having a cylindrical web and a pair of radially outwardly extending flanges, said flanges having radially outwardly opening notches in which said tubes are disposed.
Claim 2
Dependent Claim
96 words
In a heat exchanger comprising a central core, an outer covering, a nest of tubes in concentric layers between said central core and outer covering, means for distributing fluid to and collecting fluid from opposite ends of said tubes, and means for directing fluid about the exterior of said tubes; the improvement in which said directing means comprises a plurality of concentric crowns disposed one within the other, each said crown having a cylindrical web and a pair of radially outwardly extending flanges, said flanges having radially outwardly opening notches in which said tubes are disposed.
Claim 3
Dependent Claim
28 words
A heat exchanger as claimed in claim 1, the radially outer portion of each flange contacting the radically inner portion of a flange of the next outward crown.
Claim 4
Dependent Claim
20 words
A heat exchanger as claimed in claim 1, each of said notches being closed by the next radially outer crown.
Claim 5
Dependent Claim
17 words
A heat exchanger as claimed in claim 1, and seals encircling said tubes to close said notches.
Claim 6
Dependent Claim
28 words
A heat exchanger as claimed in claim 1, said core being upright, and radial supporting arms for said crowns, said radial arms being rigidly secured to the core.
Claim 7
Dependent Claim
14 words
A heat exchanger as claimed in claim 1, and support means for said core.
Claim 8
Dependent Claim
27 words
A heat exchanger as claimed in claim 1, and deflection means for fluid outside said tubes, said deflection means extending between said tubes and said outer covering.
Claim 9
Dependent Claim
50 words
A heat exchanger as claimed in claim 7, said deflection means comprising a sheet of thin metal the upper edge of which is folded down over a tube in the outermost layer of tubes, the outer edges of said sheet pressing elastically along the inner surface of said outer covering.
References Cited (Backward Citations)
CA693731A
Cited
US2847192A
Cited
US3055641A
Cited
US3228463A
Cited
US3256932A
Cited
US3302620A
Cited
US3348610A
Cited
US3509939A
Cited
US3482625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |