US5682945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger with brazed plates and corresponding process for treating a diphase fluid
Assignee: Consortium fuer Elektrochemische Industrie GmbH
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Filing: 1996-04-10
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Granted: 1997-11-04
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Expires: 2016-04-10
Abstract
Abstract The heat exchanger is of the type comprising a series of first passages (4) in which a diphase fluid circulates, each of the passages being adjacent to at least one second passage (5) for the circulation of another fluid which is a heating or refrigerating fluid. At least one of the first passages (4) comprises, in at least one region of the length thereof, an increase in the cross section of the passage and means (9, 11) for receiving and discharging one of the two phases of the diphase fluid.
Inventors
- 👤 Jean-Yves Lehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:28
CPC Classifications
F; F25; F25J; F25J5/00; F25J5/002; F25J5/005; F28; F28D; F28D9/00; F28D9/0062; F28D9/0068; F25J2270/00; F25J2270/12; F25J2290/00; F25J2290/32; F25J2290/42; F28D21/00; F28D2021/0019; F28D2021/0033; Y; Y10; Y10S; Y10S62/00; Y10S62/902; Y10S62/903
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
120 words
Heat exchanger with brazed plates, comprising in combination: a stack of plates, corrugated fins-spacers separating said plates, and a group of generally flat-shaped passages defined by said plates, said group of passages comprising a series of first passages for circulation of a diphase fluid, a series of second passages for circulation of a heating or refrigerating fluid, each first passage being adjacent to at least one second passage for circulation of said heating or refrigerating fluid, at least one of said first passages comprising, in at least one region along a length thereof, an increase in cross section of said at least one first passage, and means for receiving and discharging one of the two phases of said diphase fluid.
Claim 2
Dependent Claim
120 words
Heat exchanger with brazed plates, comprising in combination: a stack of plates, corrugated fins-spacers separating said plates, and a group of generally flat-shaped passages defined by said plates, said group of passages comprising a series of first passages for circulation of a diphase fluid, a series of second passages for circulation of a heating or refrigerating fluid, each first passage being adjacent to at least one second passage for circulation of said heating or refrigerating fluid, at least one of said first passages comprising, in at least one region along a length thereof, an increase in cross section of said at least one first passage, and means for receiving and discharging one of the two phases of said diphase fluid.
Claim 3
Dependent Claim
67 words
Heat exchanger according to claim 1, having an upward circulation of said diphase fluid, wherein one of said plates defining said first passage and an opposite plate of said adjacent second passage for circulation of said other fluid, are upwardly extended beyond an upper end of a common plate between said two passages, which common plate extends above an upper closing bar of said adjacent second passage.
Claim 4
Dependent Claim
59 words
Heat exchanger according to claim 1, having an upward circulation of said diphase fluid, and comprising upper closing bars defining upper ends of said second passages, all said plates being upwardly extended beyond said upper closing bars, and at least some of said plates, except for end plates, being provided with apertures above the level of said closing bars.
Claim 5
Dependent Claim
22 words
Heat exchanger according to claim 2, comprising, above said plates an upper dome for receiving a gas phase of said diphase fluid.
Claim 6
Dependent Claim
22 words
Heat exchanger according to claim 3, comprising, above said plates an upper dome for receiving a gas phase of said diphase fluid.
Claim 7
Dependent Claim
40 words
Heat exchanger according to claim 2, comprising, at an upper end thereof, in each gap between plates, a outlet vapour collector outlet distributor which opens onto an outlet opening, and a vapour collector box which caps all said outlet openings.
Claim 8
Dependent Claim
39 words
Heat exchanger according to claim 3, comprising, at an upper end thereof, in each gap between plates, a vapour collector outlet distributor which opens onto an outlet opening, and a vapour collector box which caps all said outlet openings.
Claim 9
Dependent Claim
13 words
Heat exchanger according to claim 2 wherein said upper closing bars are inclined.
Claim 10
Dependent Claim
51 words
Heat exchanger according to claim 1, wherein said first passage comprises, on the upstream side of said region, an intermediate plate which reduces the free cross section up to said region and which forms, with a closing semi-bar, a cavity for receiving one of the two phases of said diphase fluid.
Claim 11
Dependent Claim
41 words
Heat exchanger according to claim 9, having a downward circulation of said diphase fluid, wherein said cavity is upwardly defined by said closing semi-bar and contains, below said closing semi-bar, an outlet distributor which laterally opens onto a vapour outlet opening.
Claim 12
Dependent Claim
43 words
Heat exchanger according to claim 10, wherein said region is in the neighbourhood of the lower end of said first passage, and said passage is closed at the base thereof by a lower closing bar which extends laterally to a liquid outlet opening.
Claim 13
Dependent Claim
13 words
Heat exchanger according to claim 11, wherein said lower closing bar is inclined.
Claim 14
Dependent Claim
31 words
Heat exchanger according to claim 9, having an upward circulation of said diphase fluid, wherein said cavity is open toward the upper end and is downwardly defined by said closing semi-bar.
Claim 15
Dependent Claim
12 words
Heat exchanger according to claim 13, wherein said closing semi-bar is inclined.
Claim 16
Dependent Claim
24 words
Heat exchanger according to claim 14, wherein said first passage comprises a plurality of intermediate plates which are spaced apart along the length thereof.
Claim 17
Dependent Claim
70 words
Process for treating a diphase fluid in a heat exchanger which comprises brazed plates defining passages for circulation of a diphase fluid, said process comprising providing in at least one region along a length of each passage for circulation of said diphase fluid a cross section of the passage for said diphase fluid which is substantially increased, and means for receiving one of the two phases of said diphase fluid.
Claim 18
Dependent Claim
70 words
Process for treating a diphase fluid in a heat exchanger which comprises brazed plates defining passages for circulation of a diphase fluid, said process comprising providing in at least one region along a length of each passage for circulation of said diphase fluid a cross section of the passage for said diphase fluid which is substantially increased, and means for receiving one of the two phases of said diphase fluid.
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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) | 2000-11-03 | 2001-05-05 | 2001-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-03 | 2005-05-05 | 2005-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-03 | 2009-05-05 | 2009-11-04 | $7700.00 | Window Closed / Lapsed |