US3590914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Countercurrent flow plate-type heat exchanger with leak detector
Assignee: ALBRAZE INTERNATIONAL Inc
•
Filing: 1969-10-01
•
Granted: 1971-07-06
•
Expires: 1989-10-01
Abstract
Abstract A countercurrent flow plate-type heat exchanger having barrier spaces between adjoining heat exchange passage and a header conducting a heat exchange fluid other than that flowing through said passage. The barrier spaces contain a corrugated metallic fin material to impart structural continuity to the heat exchanger core and to provide the heat-conducting link between adjacent fluid-conducting passages. The various barrier spaces are placed in fluid communication with a leak detection means by way of barrier space headers.
Inventors
- 👤 Franklin D Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:48
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/026; F28F9/0265; F28F9/0268; F28D; F28D9/00; F28D9/0062; F28D9/0068; F28F3/00; F28F3/005; F28F3/02; F28F3/025; F28F3/027; G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3227; F28F2250/00; F28F2250/10; F28F2250/108
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
23 words
The apparatus as defIned by claim 1 wherein said ligaments are the spans between the crests and valleys of a corrugated metallic sheet.
Claim 2
Dependent Claim
234 words
A plate-type countercurrent heat exchanger comprising a plurality of metallic generally rectangular plates of similar peripheral configuration contraposed in substantially parallel spaced relationship thereby defining a plurality of spatial layers therebetween, first sealing means sealingly bridging between and extending along the margins of a first pair of adjacent plates to thereby define a first passage in a first of said spatial layers; second sealing means sealingly bridging between and extending along the margins of a second pair of adjacent plates to thereby define a second passage in a second of said spatial layers; means defining an inlet to said first passage and an outlet from said second passage at one end of said heat exchanger; means defining an outlet from said first passage and an inlet to said second passage at the other end of said heat exchanger; a header, the interior of which is in fluid communication with one of said inlet and outlet of said first passage and in fluid communication with said second sealing means externally of said second passage; third sealing means sealingly bridging between the plates of said second pair of plates from a point on said second sealing means at one side of said header to another point on said second sealing means at the other side of said header to thereby define a barrier space in said second spatial layer between said second passage and said header.
Claim 3
Dependent Claim
30 words
The apparatus as defined by claim 3 including means for detecting the passing of a fluid between at least one of said first and second passages and said barrier space.
Claim 4
Dependent Claim
38 words
The apparatus as defined by claim 3 wherein a third of said spatial layers is disposed intermediate said first and second pairs of plates to thereby define a second barrier space between said first and second spatial layers.
Claim 5
Dependent Claim
20 words
The apparatus as defined by claim 5 including a header in fluid communication with said first and second barrier spaces.
Claim 6
Dependent Claim
32 words
The apparatus as defined by claim 6 including means for detecting the passing of a fluid between at least one of said first and second passages and said first and second spaces.
Claim 7
Dependent Claim
311 words
A plate-type countercurrent flow heat exchanger comprising a plurality of metallic generally rectangular plates of similar peripheral configuration contraposed in a substantially parallel spaced relationship thereby defining a plurality of spatial layers therebetween; a first series of closing bars sealingly bridging between and extending along the margins of a first pair of adjacent plates to thereby define a first passage in a first of said spacial layers; a second series of closing bars sealingly bridging between and extending along the margins of a second pair of adjacent plates to thereby define a second passage in a second of said spacial layers; the ends of said closing bars of said first series being spaced to define an inlet and an outlet for said first passage; the ends of said closing bars of said second series being spaced to define an inlet and an outlet for said second passage; said first passage inlet and said second passage outlet being adjacent and disposed at one end of said heat exchanger and said first passage outlet and said second passage inlet being adjacent and disposed at the other end of said heat exchanger whereby the relative flow between the fluids in said first and second passages is countercurrent; a header, the interior of which is in fluid communication with one of said inlet and outlet of said first passage and in fluid communication with a side of said second series of closing bars externally of said second passage; an inner closing bar sealingly bridging between the plates of said second pair of adjacent plates from a point on said second series of closing bars at one side of said header to another point on said second series of closing bars at the other side of said header to thereby define a barrier spaced in said second spacial layer between said second passage and said header.
Claim 8
Dependent Claim
39 words
The apparatus as defined in claim 8 wherein one end of said inner closing bar and one end of the closing bar of said second series underlying said header are spaced to provide an opening to said barrier space.
Claim 9
Dependent Claim
22 words
The apparatus as defined by claim 8 including fin packing within said barrier space intermediate said header and said inner closing bar.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |