US4295522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of a tubular heat exchanger, and a tubular heat exchanger produced according to this process
Assignee: Individual
•
Filing: 1978-08-02
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Granted: 1981-10-20
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Expires: 1998-08-02
Abstract
Abstract A method for the production of a tubular heat exchanger which comprises introducing the end portions of a plurality of tubes into a corresponding plurality of holes provided in troughs, substantially filling said troughs with a liquid casting resin whereupon the liquid casting resin enters the annular gaps between the holes and the tube end portions due to capillary action, to form, upon solidification of the casting resin, a tube bundle, inserting at least one tube bundle into a housing to form a tubular heat exchanger, the sidewalls of the troughs of the tube bundle forming a gap with the housing, and filling said gap with the casting resin.
Inventors
- 👤 Willi Frei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:03
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/006; B; B23; B23P; B23P15/00; B23P15/26; F28F9/00; F28F9/02; F28F9/04; F28F9/16; F28F9/162; F28F2255/00; F28F2255/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
121 words
A heat exchanger comprising a housing, at least one tube bundle disposed in said housing, each tube bundle containing a plurality of substantially parallel tubes, the opposite end portions and a substantially intermediate portion of said tubes being disposed in troughs containing a plurality of holes for receiving said tube end portions, said troughs containing a solidified casting resin which extends into annular gaps between the holes and the tube end portions, a substantially horizontal flange being fixed to the inside of said housing, a lowermost trough resting on said flange and said tube bundle cooperating with the housing so that a gap is formed between the sidewalls of the troughs and the housing, said gap also containing the casting resin.
Claim 2
Dependent Claim
121 words
A heat exchanger comprising a housing, at least one tube bundle disposed in said housing, each tube bundle containing a plurality of substantially parallel tubes, the opposite end portions and a substantially intermediate portion of said tubes being disposed in troughs containing a plurality of holes for receiving said tube end portions, said troughs containing a solidified casting resin which extends into annular gaps between the holes and the tube end portions, a substantially horizontal flange being fixed to the inside of said housing, a lowermost trough resting on said flange and said tube bundle cooperating with the housing so that a gap is formed between the sidewalls of the troughs and the housing, said gap also containing the casting resin.
Claim 3
Dependent Claim
14 words
The heat exchanger of claim 1, wherein the casting resin is a silicone resin.
Claim 4
Dependent Claim
21 words
The heat exchanger of claim 2, wherein the housing is a metallic housing and the tubes are made of silica glass.
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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) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |