Patent US2800007A successfully refreshed from Google Patents.
US4724902A
Expired / Lapsed
US
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Plate heat exchanger
Assignee: Roehm GmbH Darmstadt
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Filing: 1986-07-30
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Granted: 1988-02-16
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Expires: 2006-07-30
Abstract
Abstract A plate heat exchanger, in particular of synthetic material is disclosed consisting of a stack of plates which are corrugated in two directions transverse to each other. The plates are so arranged in the stack that the corrugations of consecutive plates run in equiphase in one direction and in antiphase in the other direction. In the direction of the corrugation in equiphase, perfusable channels pass.
Inventors
- 👤 Heinz Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:49
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/06; F28F21/065; F28D; F28D9/00; F28D9/0031; F28D9/0037; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/393; Y10S165/394
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
76 words
A plate heat exchanger body having a plurality of faces, comprising: a plurality of corrugated plates, stacked to form perfusion channels therebetween, wherein said plates are each at least in part corrugated in two transverse directions, wherein said corrugations are wave-shaped in each direction, and wherein any two adjacent plates of said stack are arranged such that said corrugations run in equiphase in one said transverse direction and in antiphase in the other said transverse direction.
Claim 2
Dependent Claim
76 words
A plate heat exchanger body having a plurality of faces, comprising: a plurality of corrugated plates, stacked to form perfusion channels therebetween, wherein said plates are each at least in part corrugated in two transverse directions, wherein said corrugations are wave-shaped in each direction, and wherein any two adjacent plates of said stack are arranged such that said corrugations run in equiphase in one said transverse direction and in antiphase in the other said transverse direction.
Claim 3
Dependent Claim
26 words
The plate heat exchanger body of claim 1, wherein said plates have equal rectangular area and wherein outer edges of all of said plates are coplanar.
Claim 4
Dependent Claim
45 words
The plate heat exchanger body of claim 1 or 2, for use as a cross-current recuperator wherein said corrugations are regular for all of said plates and wherein the corrugations of any two adjacent plates alternate between antiphase and equiphase in the direction of stacking.
Claim 5
Dependent Claim
38 words
The plate heat exchanger body of claim 1 or 2, for use as a direct-current or counter-current recuperator wherein the corrugations of all adjacent plates are in antiphase in one face and in equiphase in an adjacent face.
Claim 6
Dependent Claim
33 words
The plate heat exchanger body of claim 4, including two facing external regions in which a peripheral edge of one said plate does not contact a peripheral edge of an adjacent said plate.
Claim 7
Dependent Claim
21 words
The plate heat exchanger body of claim 5, wherein peripheral edges of said plates are not corrugated in said external regions.
Claim 8
Dependent Claim
28 words
The plate heat exchanger body of claim 5, wherein said plates are transversely corrugated in said external regions and said corrugations run in equiphase in both said directions.
Claim 9
Dependent Claim
30 words
The plate heat exchanger body of claim 2, wherein all edges of each of plates of said stack are non-corrugated running parallel to the center plane of each said plate.
Claim 10
Dependent Claim
58 words
The plate heat exchanger body of claim 8, wherein the distance between two adjacent edges varies from the center plane of said plate to the amplitude height of said corrugation and wherein the direction of said variation is inverted at each corner of said stack and two of said adjacent non-corrugated edges are closely superimposed on each other.
Claim 11
Dependent Claim
22 words
The plate heat exchanger body of claim 9, wherein said superimposed edges are tightly connected by welding or by an adhesive means.
Claim 12
Dependent Claim
19 words
The plate heat exchanger body of claim 1, further comprising a detachable mechanical means for holding said plates together.
References Cited (Backward Citations)
US1328323A
Cited
US2288061A
Cited
CH253573A
Cited
US2550339A
Cited
GB821430A
Cited
US3119446A
Cited
GB954066A
Cited
US3291206A
Cited
GB1223752A
Cited
DE2910005A1
Cited
SU800569A1
Cited
DE3008717A1
Cited
US4460388A
Cited
US4470453A
Cited
US4544513A
Cited
WO1985004949A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |