Patent US3867981A successfully refreshed from Google Patents.
US3867981A
Expired / Lapsed
US
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Heat exchange structure
Assignee: Robbins and Myers Inc
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Filing: 1972-09-29
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Granted: 1975-02-25
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Expires: 1992-09-29
Abstract
Abstract Heat exchange structure having an elongate substantially horizontal heat transfer member provided with fin members which have angular sloping flanges. The fins are closely spaced so that the flanges of adjacent fins are in overlapping relationship. Thus, a chimney effect with scrubbing action is created in the passage of air upwardly through the heat exchange structure. Thus, a good drawing effect is created, along with highly efficient heat exchange. The heat exchange structure is particularly adapted for use as a baseboard heater but is not necessarily so limited and may be employed in other applications in which efficient heat transfer is desired.
Inventors
- 👤 Thomas D Monroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:44
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/24; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
161 words
In a heat exchanger including an elongated housing adapted to be mounted adjacent a baseboard, an elongated heating member extending longitudinally within said housing, and a plurality of horizontally spaced vertical fins each having an opening for receiving said heating member and in heat conducting relation therewith, the improvement wherein each of said fins includes a trapezoid-shaped base wall integrally connecting a pair of inclined downwardly facing flanges each projecting outwardly from said base wall to form an obtuse angle therewith, each of said fins being positioned in interfitting relation with each adjacent fin and with the corresponding adjacent said flanges disposed in overlapping parallel spaced relation, and the cross-section area between each pair of adjacent fins progressively decreasing from the bottom of the fins towards the top of the fins to provide for scrubbing of the air with said downwardly facing inclined flanges of each fin and a progressively increasing velocity of the heated air flowing upwardly between said fins.
Claim 2
Dependent Claim
161 words
In a heat exchanger including an elongated housing adapted to be mounted adjacent a baseboard, an elongated heating member extending longitudinally within said housing, and a plurality of horizontally spaced vertical fins each having an opening for receiving said heating member and in heat conducting relation therewith, the improvement wherein each of said fins includes a trapezoid-shaped base wall integrally connecting a pair of inclined downwardly facing flanges each projecting outwardly from said base wall to form an obtuse angle therewith, each of said fins being positioned in interfitting relation with each adjacent fin and with the corresponding adjacent said flanges disposed in overlapping parallel spaced relation, and the cross-section area between each pair of adjacent fins progressively decreasing from the bottom of the fins towards the top of the fins to provide for scrubbing of the air with said downwardly facing inclined flanges of each fin and a progressively increasing velocity of the heated air flowing upwardly between said fins.
Claim 3
Dependent Claim
31 words
A heat exchanger as defined in claim 1 wherein each of said flanges of each said fin, is trapezoid-shaped and has its shortest edge located at the bottom of said fin.
Claim 4
Dependent Claim
37 words
A heat exchanger as defined in claim 1 wherein only the upper corner portion of each said flange of each said fin is disposed in overlapping relation to the corresponding said flange of the adjacent said fin.
Claim 5
Dependent Claim
31 words
A heat exchanger as defined in claim 1 wherein each of said fins comprises a substantially rectangular sheet of metal with said flanges formed from opposite edge portions of said sheet.
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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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |