US3702022A - Methods of making heat exchangers - Google Patents
Methods of making heat exchangers Download PDFInfo
- Publication number
- US3702022A US3702022A US19777A US3702022DA US3702022A US 3702022 A US3702022 A US 3702022A US 19777 A US19777 A US 19777A US 3702022D A US3702022D A US 3702022DA US 3702022 A US3702022 A US 3702022A
- Authority
- US
- United States
- Prior art keywords
- cold welding
- pressings
- crests
- channel
- depressions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
- F28F3/027—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/3081—Electrodes with a seam contacting part shaped so as to correspond to the shape of the bond area, e.g. for making an annular bond without relative movement in the longitudinal direction of the seam between the electrode holder and the work
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
- F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
- F28D1/0325—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
- F28D1/0333—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49366—Sheet joined to sheet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49393—Heat exchanger or boiler making with metallurgical bonding
Definitions
- ABSTRACT A method of making a heat exchanger of the kind comprising a stack of sheet metal pressings in face to face relation, adjacent pairs of pressings providing between them alternately channels for flow of coolant and spaces for the flow of air, the method consisting of cold welding the pressings together.
- the invention provides a method of making a heat exchanger of the kind comprising a stack of sheet metal pressings in face to face relation, adjacent pairs of pressings providing between them alternately channels for flow of coolant and spaces for the flow of air, which method comprises joining pairs of pressings which provide between them spaces for flow of air by cold welding and then joining the thus formed pairs of cold welding to provide the channels for flow of coolant.
- each pair of pressings and of the pairs of pressings may be carried out in a number of cold welding operations at adjacent locations.
- the cold welding operations may be carried out at overlapping locations.
- a fin or fins may be secured to the pressings in each air space.
- a fin of wave or zig-zag form may be welded at alternate crests to the side of each pressing which bounds an air space.
- the crests of the fins may be cold welded to the pressing.
- the fins may be located on the pressings so that crests on the fins of adjacent pressings abut one another.
- pairs of pressings may first be assembled with the spaced depressions of one pressing inengagement with the spaced depressions of another pressing, the engaging depressions are cold welded together and the resulting pairs of pressings are assembled with their flanges in engagement and then the flanges are cold welded together.
- FIG. 1 is a side view of part of one of the pressings which makes up the radiator;
- FIG. 2 shows the pressing with finning applied to one side:
- FIG. 3 is a side view of two pressings and a tool for securing the pressings together;
- FIG. 4 is an enlarged view of part of the tool for securing the pressings together
- FIG. 5 is a plan view of the assembly shown in FIG. 3;
- FIG. 6 is a side view of two of the assemblies shown in FIG. 3 and a tool for securing them together;
- FIG. 7 shows a pattern of welds which may be used, using a tool such as that of FIG. 6;
- FIG. 8 shows a further pattern of welds which may be used.
- FIG. 2 of the drawings finning formed by bending a thin strip 16 of aluminium into wave formation is cold welded along the spaced crests on one side of the strip to the outside of the channel 14 of the sheet 10 between the depressions 12.
- two of the pressings 10 are offered up together with the spaced depressions 12 on one of the sheets in engagement with the spaced depressions 12 on the other sheets.
- the engaging parts of the depressions around the openings 13 are then cold welded together by a tool comprising upper and lower dies 17 and 18.
- the die 18, as shown in FIG. 4, is formed with a projecting ring 19 on its upper surface and the die 17 is formed with a similar projecting ring 20 on its lower surface.
- the lower die 18 is introduced through the open side of the depression 12 in the lower pressing and the upper die 17 is introduced through the open end of the depression 12 in the upper pressing and the dies are brought together with sufficient force to cold weld the engaged parts of the depressions trapped between the ring 19 and the ring 20 together.
- the engaging depressions at both ends of the pressings are welded together in this manner.
- the bottoms of the channels 14 of the resulting assembly are spaced apart to permit flow of air between them.
- the finning formed by the bent strip 16 is located on the two pressings so that the crests on one of the strips which are spaced from the pressing abut the crests of the other strip which are spaced from the pressing to which the other strip is secured.
- FIG. 6 of the drawings which comprises upper and lower dies 21 and 22 which have oppositely projecting rims 23, 24.
- a length of the abutting flanges to be cold welded together is introduced between the rims on the dies 21, 22 as shown in FIG. 6 and a load is applied to the upper die 21 sufficient to effect cold welding of the flanges.
- a further length of the flanges is introduced between the dies and is cold welded and this is repeated until the entire peripheries of the flanges have been cold welded.
- the flanges are welded together at overlapping locations.
- the flanges 11 are first welded along the full lines 30 and then along the broken lines 31 to fonn a continuous weld.
- the end parts of the flanges may be welded as shown in FIG. 8 using a modified form of the tool shown in FIG. 6 which forms U-shaped weld lines as indicated at 32, the remaining parts of the flanges being welded by a tool of the type the stack form header tanks to which supply and return conduits are connected.
- the channels 14 form communicating passages for flow of coolant between the two headers and cooling air passes between the spaced bottoms of the channels.
- step (e) of claim 1 is performed in two cold welding operations comprising cold welding the end parts of the flanges together to form U-shaped weld lines and cold welding the remaining parts of the flanges together to form a continuous weld.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A method of making a heat exchanger of the kind comprising a stack of sheet metal pressings in face to face relation, adjacent pairs of pressings providing between them alternately channels for flow of coolant and spaces for the flow of air, the method consisting of cold welding the pressings together.
Description
United States Patent Duke et al.
[451 Nov. 7, 1972 [54] METHODS OF MAKING HEAT EXCHANGERS [72] Inventors: Anthony John Duke, Stoke; Horace John Dagley, Rugby, both of England 1 Assignw Chry yni st sfins lmlim tsds.
England [22] Filed: March 16,1970
[21] Appl. No.: 19,777
[30] Foreign Application Priority Data March 20, 1969 Great Britain ..14,744/69 [52] US. Cl. ..29/157.3 D, 29/157.3 B, 29/470.1, 113/118 R, 113/118 D [51] Int. Cl. ....B2ld 53/00, B21k 29/00, B23p 15/26 [58] Field of Search....29/l57.3 R, 157.3 D, 157.3 B, 29/470.1; 113/118 R, 118 D; 165/166, 167
[56] 9 References Cited UNITED STATES PATENTS 2,790,628 Barnes ..29/470.l X
2,821,772 2/ 1958 Billetter ..29/470.1 X 2,874,942 2/1959 Rieppel et a1 ..29/470.1 X 3,071,216 1/1963 Jones et al. ..29/470.1 X 1,954,638 4/1934 Loeffler ..-......29/157.3 1,990,752 2/1935 Ragsdale ..l13/118 D X 2,617,634 11/1952 Jendrassik ..165/140 3,451,114 6/1969 Werneke ..29/157.3 3,512,238 5/1970 Canon et a1 ..113/118 X 3,537,165 11/1970 Paddock et al....l13/118DX FOREIGN PATENTS OR APPLICATIONS 1,007,886 10/ 1965 Great Britain Primary Examiner-John F. Campbell Assistant Examiner-Victor A. DiPalma Attorney-Mawhinney & Mawhinney [57] ABSTRACT A method of making a heat exchanger of the kind comprising a stack of sheet metal pressings in face to face relation, adjacent pairs of pressings providing between them alternately channels for flow of coolant and spaces for the flow of air, the method consisting of cold welding the pressings together.
6 Claims, 8 Drawing Figures METHODS OF MAKING HEAT EXCHANGERS This invention relates to methods of making heat exchangers for'example for use in the coolant systems of internal combustion engines.
The invention provides a method of making a heat exchanger of the kind comprising a stack of sheet metal pressings in face to face relation, adjacent pairs of pressings providing between them alternately channels for flow of coolant and spaces for the flow of air, which method comprises joining pairs of pressings which provide between them spaces for flow of air by cold welding and then joining the thus formed pairs of cold welding to provide the channels for flow of coolant.
The cold welding of each pair of pressings and of the pairs of pressings may be carried out in a number of cold welding operations at adjacent locations.
The cold welding operations may be carried out at overlapping locations.
A fin or fins may be secured to the pressings in each air space.
Prior to the cold welding of the pressings to form pairs, a fin of wave or zig-zag form may be welded at alternate crests to the side of each pressing which bounds an air space.
The crests of the fins may be cold welded to the pressing.
The fins may be located on the pressings so that crests on the fins of adjacent pressings abut one another.
In the case where each pressing has two spaced depressions having openings in the bottom thereof, a channel connecting the two depressions and a peripheral flange extending along either side of the channel and around the depressions, pairs of pressings may first be assembled with the spaced depressions of one pressing inengagement with the spaced depressions of another pressing, the engaging depressions are cold welded together and the resulting pairs of pressings are assembled with their flanges in engagement and then the flanges are cold welded together.
The following is a description of a specific embodiment of a radiator for a motor vehicle constructed in accordance with the invention reference beingmade to the accompanying diagrammatic drawings in which:
FIG. 1 is a side view of part of one of the pressings which makes up the radiator;
FIG. 2 shows the pressing with finning applied to one side:
FIG. 3 is a side view of two pressings and a tool for securing the pressings together;
FIG. 4 is an enlarged view of part of the tool for securing the pressings together;
FIG. 5 is a plan view of the assembly shown in FIG. 3;
FIG. 6 is a side view of two of the assemblies shown in FIG. 3 and a tool for securing them together;
FIG. 7 shows a pattern of welds which may be used, using a tool such as that of FIG. 6; and
FIG. 8 shows a further pattern of welds which may be used.
end and a channel 14 extends along the pressing between the depressions.
Referring now to FIG. 2 of the drawings finning formed by bending a thin strip 16 of aluminium into wave formation is cold welded along the spaced crests on one side of the strip to the outside of the channel 14 of the sheet 10 between the depressions 12.
As shown in FIG. 3 of the drawings two of the pressings 10 are offered up together with the spaced depressions 12 on one of the sheets in engagement with the spaced depressions 12 on the other sheets. The engaging parts of the depressions around the openings 13 are then cold welded together by a tool comprising upper and lower dies 17 and 18. The die 18, as shown in FIG. 4, is formed with a projecting ring 19 on its upper surface and the die 17 is formed with a similar projecting ring 20 on its lower surface. The lower die 18 is introduced through the open side of the depression 12 in the lower pressing and the upper die 17 is introduced through the open end of the depression 12 in the upper pressing and the dies are brought together with sufficient force to cold weld the engaged parts of the depressions trapped between the ring 19 and the ring 20 together. The engaging depressions at both ends of the pressings are welded together in this manner. The bottoms of the channels 14 of the resulting assembly are spaced apart to permit flow of air between them.
The finning formed by the bent strip 16 is located on the two pressings so that the crests on one of the strips which are spaced from the pressing abut the crests of the other strip which are spaced from the pressing to which the other strip is secured.
Two of the assemblies thus formed are then offered up together with their flanges 11 (see FIG. 5) in face to face relationship and the flanges 1 1 are cold welded together by the tool illustrated in FIG. 6 of the drawings which comprises upper and lower dies 21 and 22 which have oppositely projecting rims 23, 24. A length of the abutting flanges to be cold welded together is introduced between the rims on the dies 21, 22 as shown in FIG. 6 and a load is applied to the upper die 21 sufficient to effect cold welding of the flanges. A further length of the flanges is introduced between the dies and is cold welded and this is repeated until the entire peripheries of the flanges have been cold welded. Preferably the flanges are welded together at overlapping locations. In a modified method, illustrated in FIG. 7, the flanges 11 are first welded along the full lines 30 and then along the broken lines 31 to fonn a continuous weld. Alternatively the end parts of the flanges may be welded as shown in FIG. 8 using a modified form of the tool shown in FIG. 6 which forms U-shaped weld lines as indicated at 32, the remaining parts of the flanges being welded by a tool of the type the stack form header tanks to which supply and return conduits are connected. The channels 14 form communicating passages for flow of coolant between the two headers and cooling air passes between the spaced bottoms of the channels.
We claim:
l. A method of making'a heat exchanger of the kind nel thereof with certain crests of the wavesabutting the channel and the remaining .crests spaced from the channel;
secondly internally supporting the channel;
c. thirdly applying pressure to those crests abutting the channel to cold weld the crests to the channel and at the same time to form grooves in the channel which receive said crests; i
. fourthly assembling pairs of the pressings together with the depressions of adjacent pressings in engagement with one another and said remaining crests of the fins of the pressings in engagement with one another;
e. fifthly cold welding said depressions together;
f. sixthly assembling the resulting pairs in face to face relation with the peripheral flange of one pressing abutting the peripheral flange of another pressing; and I finally .-cold welding the peripheral flanges.
together.
2. A method as claimed in claim 1 wherein the cold welding of each pair of depressions and of each pair of abutting peripheral flanges. is carried out in a series of cold welding operations at adjacent locations.
. 3a-A method as claimed in claim 1 wherein the cold welding of each pair of depressions and of each pair of peripheral flanges is carried out in a series of cold welding operations at overlapping locations. v
4. A method as claimed in claim 1 wherein the fins are located on the pressings so that crests on the fins of adjacent pressings of each pair abut one another.
5. A method as claimed in claim 1 wherein step (e) of claim 1 is performed in two cold welding operations comprising cold welding portions of the flanges together and then cold welding the remaining portions of the flanges together to form a continuous weld.
6. A method as claimed in claim 1 wherein step (e) of claim 1 is performed in two cold welding operations comprising cold welding the end parts of the flanges together to form U-shaped weld lines and cold welding the remaining parts of the flanges together to form a continuous weld.
Claims (6)
1. A method of making a heat exchanger of the kind comprising a stack of sheet aluminum or aluminum alloy pressings in Face to face relation, each pressing having two spaced depressions each provided with an opening in the bottom thereof, a channel connecting the depressions and a peripheral flange, which method comprises the steps of: a. firstly locating fins of wave form having spaced crests on each pressing on the outside of the channel thereof with certain crests of the waves abutting the channel and the remaining crests spaced from the channel; b. secondly internally supporting the channel; c. thirdly applying pressure to those crests abutting the channel to cold weld the crests to the channel and at the same time to form grooves in the channel which receive said crests; d. fourthly assembling pairs of the pressings together with the depressions of adjacent pressings in engagement with one another and said remaining crests of the fins of the pressings in engagement with one another; e. fifthly cold welding said depressions together; f. sixthly assembling the resulting pairs in face to face relation with the peripheral flange of one pressing abutting the peripheral flange of another pressing; and g. finally cold welding the peripheral flanges together.
2. A method as claimed in claim 1 wherein the cold welding of each pair of depressions and of each pair of abutting peripheral flanges is carried out in a series of cold welding operations at adjacent locations.
3. A method as claimed in claim 1 wherein the cold welding of each pair of depressions and of each pair of peripheral flanges is carried out in a series of cold welding operations at overlapping locations.
4. A method as claimed in claim 1 wherein the fins are located on the pressings so that crests on the fins of adjacent pressings of each pair abut one another.
5. A method as claimed in claim 1 wherein step (e) of claim 1 is performed in two cold welding operations comprising cold welding portions of the flanges together and then cold welding the remaining portions of the flanges together to form a continuous weld.
6. A method as claimed in claim 1 wherein step (e) of claim 1 is performed in two cold welding operations comprising cold welding the end parts of the flanges together to form U-shaped weld lines and cold welding the remaining parts of the flanges together to form a continuous weld.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB04744/69A GB1253307A (en) | 1969-03-20 | 1969-03-20 | Improvements in or relating to methods of making heat exchangers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3702022A true US3702022A (en) | 1972-11-07 |
Family
ID=10046722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US19777A Expired - Lifetime US3702022A (en) | 1969-03-20 | 1970-03-16 | Methods of making heat exchangers |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3702022A (en) |
| GB (1) | GB1253307A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4134195A (en) * | 1973-04-16 | 1979-01-16 | The Garrett Corporation | Method of manifold construction for formed tube-sheet heat exchanger and structure formed thereby |
| US6352787B1 (en) * | 1997-12-30 | 2002-03-05 | Rieter Automotive (International)Ag | Method for producing an insulating pack for an insulating part |
| WO2003064099A1 (en) * | 2002-01-30 | 2003-08-07 | Dengensha Mfg. Co., Ltd. | Seam welding device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2840522A1 (en) * | 1977-10-05 | 1979-04-19 | Alfa Laval Ab | PLATE HEAT EXCHANGER |
| CH656321A5 (en) * | 1981-07-30 | 1986-06-30 | Sulzer Ag | INSTALLATION ELEMENT FOR A FABRIC AND / OR DIRECT HEAT EXCHANGE OR MIXING DEVICE. |
| FR2575279B1 (en) * | 1984-12-21 | 1989-07-07 | Barriquand | PLATE HEAT EXCHANGER |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1954638A (en) * | 1932-02-18 | 1934-04-10 | Rudolph W Loeffler | Method of making enameled radiators |
| US1990752A (en) * | 1931-06-23 | 1935-02-12 | Budd Edward G Mfg Co | Radiator construction |
| US2617634A (en) * | 1942-05-22 | 1952-11-11 | Jendrassik George | Heat exchanger |
| US2790628A (en) * | 1953-04-29 | 1957-04-30 | Utica Drop Forge & Tool Corp | Fabricated fin tube heat exchanger |
| US2821772A (en) * | 1952-03-29 | 1958-02-04 | Sawhill Tubular Products Inc | Method of making fluid-tight heat exchange tubes |
| US2874942A (en) * | 1954-08-25 | 1959-02-24 | Metal Specialty Company | Means for joining pressure-welded tubes |
| US3071216A (en) * | 1958-12-29 | 1963-01-01 | Sonobond Corp | Sandwich construction incorporating discrete metal core elements and method of fabrication thereof |
| GB1007886A (en) * | 1963-09-19 | 1965-10-22 | Silvio Sala | Sheet metal radiator for water circulation central heating plants and method of manufacturing the same |
| US3451114A (en) * | 1963-12-10 | 1969-06-24 | Hans Werneke | Manufacture of a highly efficient aluminium radiator |
| US3512238A (en) * | 1965-02-26 | 1970-05-19 | Aluminium Francais & Cie Gener | Method for fabricating radiators |
| US3537165A (en) * | 1968-06-26 | 1970-11-03 | Air Preheater | Method of making a plate-type heat exchanger |
-
1969
- 1969-03-20 GB GB04744/69A patent/GB1253307A/en not_active Expired
-
1970
- 1970-03-16 US US19777A patent/US3702022A/en not_active Expired - Lifetime
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1990752A (en) * | 1931-06-23 | 1935-02-12 | Budd Edward G Mfg Co | Radiator construction |
| US1954638A (en) * | 1932-02-18 | 1934-04-10 | Rudolph W Loeffler | Method of making enameled radiators |
| US2617634A (en) * | 1942-05-22 | 1952-11-11 | Jendrassik George | Heat exchanger |
| US2821772A (en) * | 1952-03-29 | 1958-02-04 | Sawhill Tubular Products Inc | Method of making fluid-tight heat exchange tubes |
| US2790628A (en) * | 1953-04-29 | 1957-04-30 | Utica Drop Forge & Tool Corp | Fabricated fin tube heat exchanger |
| US2874942A (en) * | 1954-08-25 | 1959-02-24 | Metal Specialty Company | Means for joining pressure-welded tubes |
| US3071216A (en) * | 1958-12-29 | 1963-01-01 | Sonobond Corp | Sandwich construction incorporating discrete metal core elements and method of fabrication thereof |
| GB1007886A (en) * | 1963-09-19 | 1965-10-22 | Silvio Sala | Sheet metal radiator for water circulation central heating plants and method of manufacturing the same |
| US3451114A (en) * | 1963-12-10 | 1969-06-24 | Hans Werneke | Manufacture of a highly efficient aluminium radiator |
| US3512238A (en) * | 1965-02-26 | 1970-05-19 | Aluminium Francais & Cie Gener | Method for fabricating radiators |
| US3537165A (en) * | 1968-06-26 | 1970-11-03 | Air Preheater | Method of making a plate-type heat exchanger |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4134195A (en) * | 1973-04-16 | 1979-01-16 | The Garrett Corporation | Method of manifold construction for formed tube-sheet heat exchanger and structure formed thereby |
| US6352787B1 (en) * | 1997-12-30 | 2002-03-05 | Rieter Automotive (International)Ag | Method for producing an insulating pack for an insulating part |
| WO2003064099A1 (en) * | 2002-01-30 | 2003-08-07 | Dengensha Mfg. Co., Ltd. | Seam welding device |
| US20050133504A1 (en) * | 2002-01-30 | 2005-06-23 | Shoji Shiba | Seam welding device |
| US7022933B2 (en) * | 2002-01-30 | 2006-04-04 | Xenesys Inc. | Seam welding apparatus |
| CN1322955C (en) * | 2002-01-30 | 2007-06-27 | 株式会社电元社制作所 | Seam welding device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1253307A (en) | 1971-11-10 |
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