US5212004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic board utilized for the construction of heat exchanger plates
Assignee: Hoechst AG
•
Filing: 1991-07-16
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Granted: 1993-05-18
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Expires: 2011-07-16
Abstract
Abstract In the board of ceramic material for the construction of permeable structures, the board has three rows of holes which extend parallel to one another and are arranged symmetrically to the axis of symmetry. Three recesses of differing length are arranged between the rows of holes. The recesses intersect the board edge, the longest and one of the two shorter ones opening out at the same board edge and the shortest being opposite the second longest. The webs remaining between the recesses or the recess and the board edge have a length of 25%±0 to 6% in relation to the length of the board determined by the direction of the rows of holes. The boards are stacked in succession to form various layers of the plate heat exchanger as the holes of the stacked boards form continuous channels and the recesses form shallow channels which extend substantially transversely to the continuous channels.
Inventors
- 👤 Jurgen Bottcher
- 👤 Rudolf Ganz
- 👤 Otto Heinz
- 👤 Jorg Honerlage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:35
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/08; F28F3/086; F28F21/00; F28F21/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24314; Y10T428/24322; Y10T428/26; Y10T428/268
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
134 words
A board of ceramic material for the construction of heat exchangers and heat exchanger plates, which board has three spaced-apart rows of holes which extend parallel to one another and are arranged symmetrically to the axis of the middle row of holes and between the rows of holes are arranged three recesses of differing length which intersect the board edge, the longest recess and one of the two shorter recesses opening out at the same board edge and the shortest recess being opposite to the second longest recess, and the webs remaining between the recesses or the recess and the board edge provide for heat exchange through the board and have a length of 25%±0 to 6% in relation to the length of the board determined by the direction of the rows of holes.
Claim 2
Dependent Claim
134 words
A board of ceramic material for the construction of heat exchangers and heat exchanger plates, which board has three spaced-apart rows of holes which extend parallel to one another and are arranged symmetrically to the axis of the middle row of holes and between the rows of holes are arranged three recesses of differing length which intersect the board edge, the longest recess and one of the two shorter recesses opening out at the same board edge and the shortest recess being opposite to the second longest recess, and the webs remaining between the recesses or the recess and the board edge provide for heat exchange through the board and have a length of 25%±0 to 6% in relation to the length of the board determined by the direction of the rows of holes.
Claim 3
Dependent Claim
44 words
The board as claimed in claim 1, wherein the webs remaining between the holes of a row of holes and the rows of holes and the recesses are 1 to 10 mm wide and the width of the recesses is 1 to 50 mm.
Claim 4
Dependent Claim
121 words
A heat exchanger formed by the ceramic board as claimed in claim 1, wherein a plurality of boards are stacked alternately one above the other wherein a second board is rotated about the axis of the middle row of holes of a first board, a third board formed by rotating said second board about an axis of rotation perpendicular to the axis of symmetry of the middle row of holes of said second board, and a fourth board formed by rotating said third board about the axis of symmetry of said middle row of holes thereof such that the holes of the stacked boards form continuous channels and the recesses form shallow channels which extend essentially transversely to the continuous channels.
References Cited (Backward Citations)
US2610835A
Cited
US2656159A
Cited
US4526635A
Cited
EP0274695A1
Cited
US4934453A
Cited
US4880055A
Cited
US4936380A
Cited
US5016707A
Cited
US5099915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |