Patent DE936348C successfully refreshed from Google Patents.
US3759322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Linde GmbH
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Filing: 1971-09-17
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Granted: 1973-09-18
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Expires: 1991-09-17
Abstract
Abstract A heat exchanger consists of a stack of rectangular corrugated plates whose corrugations run at angles of 45* to the longitudinal sides of the plates with bent edges of pairs of adjoining plates sealed together to define respective flow compartments for the heat exchange fluids. Each pair of contacting plates is rotated through 180* with respect to the adjoining plate so that the corrugations cross one another. Between the plates whose bent edges are turned toward one another, stacks of similarly corrugated plates are provided to constitute a regenerative heat exchange packing or heat-storage reservoir.
Inventors
- 👤 Din Nasser G El
- 👤 H Waldmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:42
CPC Classifications
F; F25; F25J; F25J5/00; F28; F28D; F28D9/00; F28D9/0031; F28D9/0037; F28F; F28F1/00; F28F1/10; F28F1/42; F28F1/422; F25J2210/00; F25J2210/40; F25J2290/00; F25J2290/32; F25J2290/44; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/373; Y10S165/384
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
194 words
A regenerative type heat exchanger, comprising: housing means defining a space and provided with inlets and outlets for conducting at least two fluids through said space; an assembly of mutually parallel substantially coextensive corrugated primary plates having opposite parallel edges turned toward and welded to a respective edge of another primary plate and forming a pair therewith, the plates of each pair being spaced apart and parallel to one another between the welded edges to form compartments traversable by one of said fluids, each of said pairs of plates being direct in contact with the primary plates of adjoining pairs and defining therewith passages traversable by the other of said fluids, and a respective stack of mutually coextensive corrugated secondary plates forming heat-storage reservoirs and each wholly received in a respective one of said compartments inwardly of The welded edges of the primary plates thereof, the crests of the corrugations of adjacent secondary plates of each stack bearing upon another and the crests of the corrugations of the primary plates of each pair bearing upon the crests of corrugations of the secondary plates at the outer sides of the respective stack within each compartment.
Claim 2
Dependent Claim
194 words
A regenerative type heat exchanger, comprising: housing means defining a space and provided with inlets and outlets for conducting at least two fluids through said space; an assembly of mutually parallel substantially coextensive corrugated primary plates having opposite parallel edges turned toward and welded to a respective edge of another primary plate and forming a pair therewith, the plates of each pair being spaced apart and parallel to one another between the welded edges to form compartments traversable by one of said fluids, each of said pairs of plates being direct in contact with the primary plates of adjoining pairs and defining therewith passages traversable by the other of said fluids, and a respective stack of mutually coextensive corrugated secondary plates forming heat-storage reservoirs and each wholly received in a respective one of said compartments inwardly of The welded edges of the primary plates thereof, the crests of the corrugations of adjacent secondary plates of each stack bearing upon another and the crests of the corrugations of the primary plates of each pair bearing upon the crests of corrugations of the secondary plates at the outer sides of the respective stack within each compartment.
Claim 3
Dependent Claim
33 words
The heat exchanger defined in claim 1 wherein said primary plates are sealed in stacked relationship along edges other than the first-mentioned edges by bars interposed between and welded to the primary plates.
Claim 4
Dependent Claim
46 words
The heat exchanger defined in claim 1 wherein all of said secondary plates are geometrically identical and the secondary plates of each stack contact one another in front-to-back relationship, and the primary plates of said assembly are geometrically identical with alternate plates facing in opposite directions.
Claim 5
Dependent Claim
47 words
The heat exchanger defined in claim 3 wherein said corrugations lie at angles of substantially 45* to the edges of the respective plates and said plates are all substantially rectangular, the crests of the corrugations of plates in contact with one another running in mutually orthogonal relationship.
Claim 6
Dependent Claim
45 words
The heat exchanger defined in claim 4 wherein said housing includes a dome extending along one side of said assembly and provided with a plurality of inlet fittings, and partition means for subdividing said dome to form individual distribution chambers selectively communicating with said compartments.
Claim 7
Dependent Claim
22 words
The heat exchanger defined in claim 4 wherein said edges turn toward each other of said primary plates and have quarter-cylindrical configurations.
Claim 8
Dependent Claim
63 words
The heat exchanger defined in claim 6 wherein the crests along inner faces of the primary plates defining each compartment lie in respective planes between which the respective stack of secondary plates is sandwiched, the corrugations of said primary plates projecting outwardly away from the respective planes into direct contact with the oppositely projecting corrugations of the primary plates of an adjacent pair.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |