US4401155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger with extruded flow channels
Assignee: Union Carbide Industrial Gases Technology Corp
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Filing: 1981-02-13
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Granted: 1983-08-30
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Expires: 2001-02-13
Abstract
Abstract A heat exchanger constructed from a plurality of stacked modules, each module having closed channels for high pressure flow and fins extending vertically up and/or down from the channels which form open channels suitable for low pressure flow when the modules are stacked parallel along their length.
Inventors
- 👤 John H. Royal
- 👤 Lawrence S. Graczyk
- 👤 William J. Owens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:13
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0081; F28F; F28F7/00; F28F7/02; F28F2255/00; F28F2255/16; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/387; Y10S165/392
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
115 words
A heat exchanger comprising a plurality of modules stacked parallel, and unconnected, to one another, said plurality enclosed in a shell wherein each module comprises: (a) a plurality of channels each having a continuous metal boundary around its cross-sectional perimeter and open at either end, said channels running parallel to one another and in the same plane, being generally equispaced and of generally uniform cross-sectional size and shape, and (b) a plurality of metal fins, each fin extending substantially along the length of the module and perpendicular to the flow direction of the channels, above or below the channels, said fins being of generally uniform thickness and having an identical dimension perpendicular to said channels.
Claim 2
Dependent Claim
115 words
A heat exchanger comprising a plurality of modules stacked parallel, and unconnected, to one another, said plurality enclosed in a shell wherein each module comprises: (a) a plurality of channels each having a continuous metal boundary around its cross-sectional perimeter and open at either end, said channels running parallel to one another and in the same plane, being generally equispaced and of generally uniform cross-sectional size and shape, and (b) a plurality of metal fins, each fin extending substantially along the length of the module and perpendicular to the flow direction of the channels, above or below the channels, said fins being of generally uniform thickness and having an identical dimension perpendicular to said channels.
Claim 3
Dependent Claim
14 words
The heat exchanger of claim 1 wherein said channel cross-sectional shape is essentially rectangular.
Claim 4
Dependent Claim
11 words
The heat exchanger of claim 1 wherein said metal is aluminum.
Claim 5
Dependent Claim
15 words
The heat exchanger of claim 1 wherein said fins extend above and below the channels.
Claim 6
Dependent Claim
18 words
The heat exchanger of claim 1 wherein said fins extend above or below the spacing between the channels.
Claim 7
Dependent Claim
24 words
The heat exchanger of claim 1 wherein said fins and said channels each have a linear density of from 3 to 25 per inch.
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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) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |