US5649589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety annular heat exchanger for incompatible fluids
Assignee: Societe dEtudes et de Constructions Aero Navales
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Filing: 1996-04-05
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Granted: 1997-07-22
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Expires: 2016-04-05
Abstract
Abstract An annular heat exchanger for incompatible fluids, such as reactive compounds, particularly for the aeronautics industry, in which a sealed bottle is fixed interior of a hollow body, with integral heat dissipators and novel fluid passageway orientation, whereby no leak can occur which would commingle the incompatible fluids.
Inventors
- 👤 Pierre Carpentier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:07
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/10; F28D7/12; F28F; F28F1/00; F28F1/003; F28F2265/00; F28F2265/16
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
273 words
An annular heat exchanger for preventing the mixing of incompatible fluids comprising: a hollow body having one end closed by a bottom and the other end defining a bearing surface; a sealed bottle positioned within said body and comprising a flange for cooperating with said body adjacent the bearing surface, said sealed bottle comprising at least one annular wall, said wall having two sides and a fluid passage formed therein, said sealed bottle sealingly connected to said body while providing at least one leak circuit; said leak circuit comprising a vent channel in said body communicating with the fluid passage formed in said at least one annular wall of said bottle; heat dissipators provided on each of the two sides of said at least one annular wall of said bottle, said wall of said bottle separating a first fluid circulating between an input channel of said body and an output channel of said body on one of the two sides of said wall and a second fluid circulating between an input duct of said body and an output duct of said body on the other of the two sides of said wall, said heat dissipators adapted to transmit heat between said first fluid and said second fluid through said wall of said bottle; and one of the two sides of said at least one annular wall of said bottle supporting a portion of said heat dissipators adjacent an annular separation channel, said separation channel guiding one of said first and second fluids past said portion of said heat dissipators between said separation channel and the one of the two sides of said wall.
Claim 2
Dependent Claim
273 words
An annular heat exchanger for preventing the mixing of incompatible fluids comprising: a hollow body having one end closed by a bottom and the other end defining a bearing surface; a sealed bottle positioned within said body and comprising a flange for cooperating with said body adjacent the bearing surface, said sealed bottle comprising at least one annular wall, said wall having two sides and a fluid passage formed therein, said sealed bottle sealingly connected to said body while providing at least one leak circuit; said leak circuit comprising a vent channel in said body communicating with the fluid passage formed in said at least one annular wall of said bottle; heat dissipators provided on each of the two sides of said at least one annular wall of said bottle, said wall of said bottle separating a first fluid circulating between an input channel of said body and an output channel of said body on one of the two sides of said wall and a second fluid circulating between an input duct of said body and an output duct of said body on the other of the two sides of said wall, said heat dissipators adapted to transmit heat between said first fluid and said second fluid through said wall of said bottle; and one of the two sides of said at least one annular wall of said bottle supporting a portion of said heat dissipators adjacent an annular separation channel, said separation channel guiding one of said first and second fluids past said portion of said heat dissipators between said separation channel and the one of the two sides of said wall.
Claim 3
Dependent Claim
88 words
The heat exchanger as set forth in claim 1 wherein said at least one annular wall of said bottle is U-shaped and wherein said separation channel is connected to a fluid inlet chamber located adjacent said other end of said body opposite said one end closed by the bottom, said fluid inlet chamber communicating with a pair of first fluid circuits connecting said input duct and said output duct, a second fluid circuit connecting said inlet channel and said outlet channel of said body through a median mouth.
Claim 4
Dependent Claim
70 words
The heat exchanger as set forth in claim 2 wherein a portion of said heat dissipators is supported on the other of the two sides of said wall of said bottle and wherein said second fluid circuit comprises an annular fluid passage for guiding the other of said first and second fluids past said portion of said heat dissipators provided on the other of the two sides of said wall.
Claim 5
Dependent Claim
42 words
The heat exchanger as set forth in claim 2 wherein the bottom of said body comprises a manifold for distributing the other of said first and second fluids from said inlet channel of said body to said outlet channel of said body.
Claim 6
Dependent Claim
58 words
The heat exchanger as set forth in claim 1 wherein said separation channel comprises a pair of spaced apart walls defining an annular fluid passage for guiding one of said first and second fluids past said portion of said heat dissipators supported on one of the two sides of said at least one annular wall of said bottle.
Claim 7
Dependent Claim
62 words
The heat exchanger as set forth in claim 5 wherein each of said spaced apart walls of said separation channel is a double wall and is provided with at least one aperture for admission of a preselected fluid between said double wall to form a heat screen for one of said first and second fluids in said first and second fluid circuits.
Claim 8
Dependent Claim
19 words
The heat exchanger as set forth in claim 1 wherein said vent channel extends radially outwardly through said body.
Claim 9
Dependent Claim
37 words
The heat exchanger as set forth in claim 7 wherein said vent channel of said leak circuit extends between said U-shaped wall and the outside of said body to prevent mixing of said first and second fluids.
Claim 10
Dependent Claim
46 words
The heat exchanger as set forth in claim 1 wherein said at least one annular wall is provided with annular chambers in fluid communication with said fluid passage in said wall, at least one of said annular chambers connected to said vent channel provided in body.
Claim 11
Dependent Claim
26 words
The heat exchanger as set forth in claim 9 wherein said annular chambers of said of said at least one annular wall contain heat transmission elements.
Claim 12
Dependent Claim
21 words
The heat exchanger as set forth in claim 1 wherein at least a portion of said body has a circular cross-section.
Claim 13
Dependent Claim
21 words
The heat exchanger as set forth in claim 1 wherein at least a portion of said body has a polygonal cross-section.
Claim 14
Dependent Claim
21 words
The heat exchanger as set forth in claim 1 wherein at least a portion of said body has an arcuate cross-section.
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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) | 2000-07-21 | 2001-01-20 | 2001-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-07-21 | 2005-01-20 | 2005-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-07-21 | 2009-01-20 | 2009-07-22 | $7700.00 | Window Closed / Lapsed |