US3745631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for manufacturing finned heat exchangers
Assignee: GRANGES ESSEM SW AB
•
Filing: 1971-02-04
•
Granted: 1973-07-17
•
Expires: 1991-02-04
Abstract
Abstract A method and apparatus for producing highly effective heat exchanger elements of the type which comprise corrugated surface enlarging members of strip material fixed to thin-walled substrates. The strip material, which can be either precorrugated or corrugated synchronously with the heat-exchanger element manufacturing process and which has a thickness of from 50-10 Mu m, is advanced concurrently with a substrate material to a station at which the strip is lightly held in firm abutment with the substrate material by means of an impringing stream of gaseous medium and simultaneously metallurgically bonded to the substrate. The composite product is then cut into lengths to form finished heat exchanger elements.
Inventors
- 👤 K Jonason
- 👤 K Karlsson
- 👤 A Remning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:30
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378; Y10T29/49393; Y10T29/51; Y10T29/5136; Y10T29/5137; Y10T29/5142; Y10T29/53; Y10T29/53113
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
47 words
A method according to claim 1, wherein the permanent metallic bond between the corrugated strip material and the basic profile is effected by a continuous soldering operation and wherein the gaseous medium is used to cool the joint created between the strip material and the basic profile.
Claim 2
Dependent Claim
37 words
A method according to claim 2, wherein the basic profile is provided with a solder composition and the solder heated to a molten state prior to bringing the corrugated strip material into abutment with the basic profile.
Claim 3
Dependent Claim
38 words
A method according to claim 3, wherein the basic profile is provided at at least the estimated positions of contact with the advancing corrugated strip with a solder composition simultaneously as it is advanced along its movement path.
Claim 4
Dependent Claim
39 words
A method according to claim 3, wherein the solder-coated basic profile is passed through a heating zone to melt the solder and maintain it in a molten state at the time of contact with the advancing corrugated strip material.
Claim 5
Dependent Claim
62 words
A method according to claim 4, wherein immediately upon contact of the corrugated strip with the basic profile and the solder applied thereto the corrugated strip is held lightly pressed against the basic profile by directing a gaseous medium against said strip material while cooling the solder to establish a permanent metallic joint between the basic profile and the corrugated strip material.
Claim 6
Dependent Claim
23 words
A method according to claim 1, wherein the strip material is corrugated in a process directly connected with the heat-exchanger elements manufacturing process.
Claim 7
Dependent Claim
24 words
A method according to claim 7, wherein the strip material is produced and corrugated in processes directly connected with the heat-exchanger element manufacturing process.
Claim 8
Dependent Claim
29 words
A method according to claim 1 wherein said cylindrical profile comprises a solid basic profile which is advanced in its longitudinal direction and provided with said surface enlarging member.
Claim 9
Dependent Claim
31 words
A method according to claim 1, wherein the basic profile comprises a copper alloy, preferably a copper-zinc alloy and the corrugated strip mateRial comprises a copper alloy, preferably very pure copper.
Claim 10
Dependent Claim
33 words
A method according to claim 1, wherein the corrugated strip material is a metal foil having a thickness of the order of 50-10 Mu m, preferably 35-15 Mu m, suitably 25 Mu m.
Claim 11
Independent Claim
206 words
An apparatus for series manufacture of highly-effective heat-exchange elements for heat exchangers intended for cooling or heating purposes, preferably for use in motor vehicles, and being of the type which comprise a cylindrical, metallic basic profile provided with a longitudinally extending surface enlarging member which is in the form of a metallic strip corrugated transversely of the longitudinal axis thereof and which is in intimate heat conducting contact with the basic profile, said apparatus comprising first feed means for feeding said basic profile in one end direction thereof in an individual movement path, second feed means for feeding said corrugated metallic strip concurrently with said basic profile into abutment with said basic profile and entrained in the movement thereof, blower means positioned in the path of movement behind said corrugated strip and arranged to impinge a stream of gaseous medium against the corrugated strip material passing thereby so as to maintain said strip in abutment with and correctly distributed along the surface of the basic profile, and means operative in coordination with said blower means to successively establish metallic bonds between the basic profile and the crests of the corrugations of said strip during passage of said basic profile and said strip past said blower means.
Claim 12
Dependent Claim
73 words
An apparatus according to claim 12, wherein the means for establishing a permanent metallic bond between the basic profile and the corrugated strip material comprises a) a zone for melting or heating the solder composition applied to the basic profile, said zone being located in the movement path of the basic profile before the blower means, and b) the blower means in its simultaneous capacity as the cooling zone for said solder composition.
Claim 13
Dependent Claim
52 words
An apparatus according to claim 12, wherein there is arranged behind the combined holder means and cooling zone so called flying shear means , the length of stroke of which can be adjusted and which is arranged to be moved at the same speed as the basic profile during the cutting period.
Claim 14
Dependent Claim
24 words
An apparatus according to claim 12, wherein means for corrugating the strip material is placed in connection with the corrugated strip material feeding means.
References Cited (Backward Citations)
US2332368A
Cited
US2794243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |