Patent US3367359A successfully refreshed from Google Patents.
US4558735A
Expired / Lapsed
US
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Heat exchanger having a metal baffle plate secured to a steel member
Assignee: Schaefer Werke GmbH
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Filing: 1983-10-06
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Granted: 1985-12-17
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Expires: 2003-10-06
Abstract
Abstract A heat baffle plate of aluminum or another good heat-conducting metal is secured on a steel member. Since aluminum cannot be welded to steel, connections are utilized which result in a good heat-conducting connection but without direct welding. For example, a steel plate can be placed over a portion of the heat baffle plate and then be welded through openings in the aluminum plate to the steel member. The baffle plate can alternatively be supported by a form-locking engagement with a holding plate of steel which is welded to the steel member. The better heat conductivity of the aluminum baffle plate causes the heat emission or heat absorption to be substantially increased for a given structural arrangement in comparison to a heat baffle plate of steel.
Inventors
- 👤 Klaus Meike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:49
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/16; B23K11/20; B23K11/002; B23K11/004; B23K11/0046; F; F28; F28F; F28F1/00; F28F1/10; F28F3/00; F28F3/02; F28F3/025; B23K2101/00; B23K2101/04; B23K2101/14; F28F2275/00; F28F2275/08; F28F2275/085; Y; Y10; Y10S; Y10S165/00; Y10S165/327; Y10S165/328; Y10S165/329
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
109 words
A heat exchanger, comprising a steel member and at least one heat baffle plate which is connected heat-conductingly to and projects outwardly from said steel member, wherein said heat baffle plate is made of a metal having a heat conductivity greater than the heat conductivity of steel, wherein said heat baffle plate is held against said steel member by a further member which is welded to said steel member, and wherein said further member is a steel plate which rests against said heat baffle plate and in plural locations has portions which project through openings in said heat baffle plate, each said portion being welded to said steel member.
Claim 2
Dependent Claim
109 words
A heat exchanger, comprising a steel member and at least one heat baffle plate which is connected heat-conductingly to and projects outwardly from said steel member, wherein said heat baffle plate is made of a metal having a heat conductivity greater than the heat conductivity of steel, wherein said heat baffle plate is held against said steel member by a further member which is welded to said steel member, and wherein said further member is a steel plate which rests against said heat baffle plate and in plural locations has portions which project through openings in said heat baffle plate, each said portion being welded to said steel member.
Claim 3
Dependent Claim
20 words
The heat exchanger according to claim 1, wherein said heat baffle plate is made of aluminum or an aluminum alloy.
Claim 4
Dependent Claim
62 words
The heat exchanger according to claim 1, wherein said steel member is a hollow member which is made of platelike steel material and has a cavity for guiding liquid heat carrier medium, and wherein said heat baffle plate has a boss which engages a recess provided in said further member in order to align said further member and said heat baffle plate.
Claim 5
Dependent Claim
33 words
The heat exchanger according to claim 1, wherein said openings through said heat baffle plate are previously punched therein and said steel plate is indented in the region of each said portion thereof.
Claim 6
Dependent Claim
70 words
The heat exchanger according to claim 1, wherein the melting point of said heat baffle plate is lower than the melting point of steel, wherein said openings said heat baffle plate are formed by melting and evaporation of the material of said heat baffle plate during welding, and wherein an edge of each said opening engages the surface of the portion of said steel plate which projects into the opening.
Claim 7
Dependent Claim
21 words
The heat exchanger according to claim 1, wherein said steel plate has approximately the same thickness as said heat baffle plate.
Claim 8
Dependent Claim
18 words
The heat exchanger according to claim 1, wherein said heat baffle plate is free of a surface coating.
Claim 9
Dependent Claim
24 words
The heat exchanger according to claim 1, wherein said heat baffle plate has a thickness in the range of 0.1 mm to 0.8 mm.
Claim 10
Dependent Claim
23 words
The heat exchanger according to claim 1, including a plurality of said heat baffle plates which are each secured on said steel member.
Claim 11
Dependent Claim
37 words
The heat exchanger according to claim 9, wherein said heat baffle plates are each bent and each have a fastening leg disposed against said steel member and a further leg which projects outwardly from said steel member.
Claim 12
Dependent Claim
32 words
The heat exchanger according to claim 10, wherein each said heat baffle plate is substantially U-shaped and has a web which is said fastening leg and is disposed against said steel member.
Claim 13
Dependent Claim
27 words
The heat exchanger according to claim 1, wherein said heat baffle plate has several loops, the apex regions of said loops being disposed against said steel member.
Claim 14
Dependent Claim
28 words
The heat exchanger according to claim 12, wherein said loops project outwardly from said steel member and are shaped so that they have a relatively large surface area.
Claim 15
Dependent Claim
84 words
A heat exchanger, comprising a hollow steel member which has a cavity through which a liquid heat carrier medium can flow and a heat baffle plate which is dipsosed heat-conductingly against said steel member and projects outwardly therefrom, wherein said heat baffle plate is made of a metal having a heat conductivity which is greater than the heat conductivity of steel, and wherein said heat baffle plate is held against said steel member by a further member which is welded to said steel member.
Claim 16
Dependent Claim
84 words
A heat exchanger, comprising a hollow steel member which has a cavity through which a liquid heat carrier medium can flow and a heat baffle plate which is dipsosed heat-conductingly against said steel member and projects outwardly therefrom, wherein said heat baffle plate is made of a metal having a heat conductivity which is greater than the heat conductivity of steel, and wherein said heat baffle plate is held against said steel member by a further member which is welded to said steel member.
Claim 17
Dependent Claim
20 words
The heat exchanger according to claim 14, wherein said heat baffle plate is made of aluminum or an aluminum alloy.
Claim 18
Dependent Claim
85 words
The heat exchanger according to claim 14, wherein said further member is a steel plate which is disposed against said heat baffle plate on a side thereof remote from said steel member and in plural locations has portions which project into openings provided through said heat baffle plate, each said portion being welded to said steel member, and wherein said heat baffle plate has a boss which, for aligning said steel plate and said heat baffle plate, engages a recess provided in said steel plate.
Claim 19
Dependent Claim
35 words
The heat exchanger according to claim 16, wherein said heat baffle plate has said openings created therein prior to assembly of said heat exchanger, and wherein each said portion of said steel plate is indented.
Claim 20
Dependent Claim
81 words
The heat exchanger according to claim 16, wherein the melting point of said heat baffle plate is lower than the melting point of steel, wherein said openings in said heat baffle plate through which said portions of said steel plate project are formed by melting and evaporation of the material of said heat baffle plate during welding, and wherein an edge of each said opening engages the surface of the associated portion of said steel plate which projects into such opening.
Claim 21
Dependent Claim
21 words
The heat exchanger according to claim 16, wherein said steel plate has approximately the same thickness as said heat baffle plate.
Claim 22
Dependent Claim
59 words
The heat exchanger according to claim 14, wherein the melting point of the material of said heat baffle plate is lower than the melting point of steel; including a plurality of said further members; and wherein each said further member is a steel particle which is embedded in said heat baffle plate and is welded to said steel member.
Claim 23
Dependent Claim
37 words
The heat exchanger according to claim 14, wherein said heat baffle plate is bent and has a fastening leg which is disposed against said steel member and a further leg which projects outwardly from said steel member.
Claim 24
Dependent Claim
31 words
The heat exchanger according to claim 21, wherein said heat baffle plate includes a rectangular tubular portion attached to said further leg at an end thereof remote from said steel member.
Claim 25
Dependent Claim
18 words
The heat exchanger according to claim 21, wherein said further leg is bent to have a sinuous shape.
Claim 26
Dependent Claim
26 words
The heat exchanger according to claim 14, wherein said heat baffle plate is substantially U-shaped and has a web which is disposed against said steel member.
Claim 27
Dependent Claim
101 words
The heat exchanger according to claim 14, wherein said heat baffle plate is bent to have a sinuous shape and has a plurality of spaced fastening portions which are provided at spaced locations therealong and which are each disposed against said steel member, and including a plurality of said further members which are each a steel plate disposed against a respective said fastening portion of said heat baffle plate on a side thereof remote from said steel member and which are each welded to said steel member through an opening provided in the adjacent fastening portion of said heat baffle plate.
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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) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |