US3845814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finned primary surface heat exchanger
Assignee: Union Carbide Corp
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Filing: 1972-07-10
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Granted: 1974-11-05
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Expires: 1992-07-10
Abstract
Abstract A heat exchanger composed of primary-surface heat exchange channel elements, each element being formed and bound by a thermally conductive material and having slotted secondarysurface fins disposed substantially along its longitudinal length. The fins, along with the slatted apertures on the fins, are oriented to provide a substantial through-flow area for an external fluid which in the operating mode will flow through passages formed between adjacent channel elements.
Inventors
- 👤 L Kun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:28
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/04; F28F3/042; F28F3/044; B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; F28D; F28D1/00; F28D1/02; F28D1/03; F28D1/0308; F28D1/0316; F28F13/00; F28F13/06; F28F3/048; F28F3/12; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/373; Y10S165/374; Y10S165/376; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366; Y10T29/49377; Y10T29/49378
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
218 words
A heat exchanger comprising at least one flat primary-surface heat exchange channel element formed and bound by at least one thermally conductive walled material with a maximum dimension width line and a longitudinal length line, said element having an entrance opening and an exit opening, the improvement which comprises the addition of at least one secondary-surface heat exchange slotted fin of width greater than 0.1 inch and less than 0.6 inch disposed substantially along at least one longitudinal section of the channel element, said fin having a multitude of slatted apertures arranged in a louver configuration with adjacent slats separated by slot-shaped apertures, having the fin angle gamma between about 0* and about 60* wherein gamma is the angle formed between the plane of the fin and a plane containing the maximum dimension width line and longitudinal length line of said channel element, slat width of at least 0.02 inch and less than 0.10 inch, the slat angle Beta is between about 15* and about 90* wherein Beta is the angle formed between the plane of the fin and the plane of the slats and the slot angle Alpha is between about 0* and about 180* wherein Alpha is the angle formed between the longitudinal length line of the channel and the longitudinal length line of the slots.
Claim 2
Dependent Claim
218 words
A heat exchanger comprising at least one flat primary-surface heat exchange channel element formed and bound by at least one thermally conductive walled material with a maximum dimension width line and a longitudinal length line, said element having an entrance opening and an exit opening, the improvement which comprises the addition of at least one secondary-surface heat exchange slotted fin of width greater than 0.1 inch and less than 0.6 inch disposed substantially along at least one longitudinal section of the channel element, said fin having a multitude of slatted apertures arranged in a louver configuration with adjacent slats separated by slot-shaped apertures, having the fin angle gamma between about 0* and about 60* wherein gamma is the angle formed between the plane of the fin and a plane containing the maximum dimension width line and longitudinal length line of said channel element, slat width of at least 0.02 inch and less than 0.10 inch, the slat angle Beta is between about 15* and about 90* wherein Beta is the angle formed between the plane of the fin and the plane of the slats and the slot angle Alpha is between about 0* and about 180* wherein Alpha is the angle formed between the longitudinal length line of the channel and the longitudinal length line of the slots.
Claim 3
Dependent Claim
103 words
The heat exchanger of claim 1 wherein at least two of such channel elements are aligned and spaced apart to provide a dual set of passages, the first set of passages defined bY, and bound within, the conductive walls of each channel element, and a second set of passages defined by, and disposed between, adjacent channels, said fins being disposed at the fore and aft sections of the channel elements, and said section defined as the remote sections of the channel element as measured from a plane containing the center points of two adjacent channel elements and the longitudinal axis of the channel.
Claim 4
Dependent Claim
106 words
The heat exchanger in claim 2 wherein the slotted fin is fabricated with an angle of approach theta of between 0* and 70*, said angle of approach theta being defined as the angle between a first line which is parallel to a plane containing the maximum dimensional width line and the longitudinal dimensional length line of the channel element and perpendicular to the channel''s longitudinal length line, and a second line formed by the intersection of a plane onto the surface of a slat on the slotted fin, said plane being normal to the surface of the slat and containing the first line as defined above.
Claim 5
Dependent Claim
16 words
The heat exchanger of claim 3 wherein said angle of approach is between 0* and 45*.
Claim 6
Dependent Claim
23 words
The heat exchanger of claim 2 wherein more than one slotted fin is disposed substantially along a longitudinal section of the channel element.
Claim 7
Dependent Claim
65 words
The heat exchanger of claim 4 for use in conjunction with internal combustion engines wherein said channel elements are flat aluminum isocompression channels, wherein the channel elements are aligned such that the planes of each element which contains the maximum dimensional width line and longitudinal length line of such elements are parallel; and wherein the angle of approach is between about 0* and about 45*.
Claim 8
Dependent Claim
25 words
The heat exchanger of claim 6 wherein the maximum dimensional width line of each primary-surface channel element is between about 0.75 inch and 2.0 inches.
Claim 9
Dependent Claim
35 words
The heat exchanger of claim 6 wherein angle Beta is between about 30* and about 60*; angle Alpha is between about 45* and about 135*; and angle gamma is between about 0* and about 60*.
Claim 10
Dependent Claim
20 words
The heat exchanger of claim 6 wherein the fins are an extension of the walls of the primary-surface channel elements.
Claim 11
Dependent Claim
21 words
The heat exchanger of claim 6 wherein the fins are separately added between the longitudinal edges of the primary-surface channel elements.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |