GB643890A - Improvements in or relating to tubes for heat exchangers - Google Patents
Improvements in or relating to tubes for heat exchangersInfo
- Publication number
- GB643890A GB643890A GB29970/47A GB2997047A GB643890A GB 643890 A GB643890 A GB 643890A GB 29970/47 A GB29970/47 A GB 29970/47A GB 2997047 A GB2997047 A GB 2997047A GB 643890 A GB643890 A GB 643890A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- strips
- tube
- fins
- longitudinal
- 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
Links
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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
643,890. Tubular heat-exchange elements. HUET, A. Nov. 11, 1947, No. 29970. Convention date, Nov. 22, 1946. [Class 64(iii)] [Also in Group XXII] A heat-exchanger tube made of bent metal strips welded together, and having approximately tangentially projecting, longitudinal fins lying in parallel planes, comprises two strips 6 each having between its longitudinal marginal regions 8, 10, constituting fin-forming portions, a portion constituting an arc of the tube wall, a marginal region of each strip having its longitudinal edge welded to another strip :and being shaped to form with that other strip a hollow fin which is wide at its root, two such fins being spaced around the tube 180 degrees apart. In the form shown in Fig. 2, the tube comprises also an intermediate strip 5 to which the edges of the outer strips 6 are welded along spaced parallel lines, or in a single line only. The strip 5 may carry fluid diffusing means, or be deformed to provide conical surfaces on opposite sides, as described in Specification 634,751. In another form of tube, Fig. 4, the intermediate strip is omitted, the extreme edges of the strips 6 being welded together at the tips of the fins. Protuberances 15 may be provided on one or each of the opposed portions 8, 10 of the strips 6, contacting the other of said portions, and they may be spotwelded thereto. Specification 628,416 also is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR643890X | 1946-11-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB643890A true GB643890A (en) | 1950-09-27 |
Family
ID=8999763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29970/47A Expired GB643890A (en) | 1946-11-22 | 1947-11-11 | Improvements in or relating to tubes for heat exchangers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB643890A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1122971B (en) * | 1956-05-21 | 1962-02-01 | Bundy Tubing Co | Heat exchange tube made of a tubular metal strip and a metal rib inserted into the longitudinal seam |
GB2403605A (en) * | 2003-06-21 | 2005-01-05 | Elektro Magnetix Ltd | Machine cooling tube with spiral flow |
US10236737B2 (en) | 2014-08-14 | 2019-03-19 | Wobben Properties Gmbh | Synchronous generator, in particular multipole synchronous annular generator of a direct-drive wind turbine, and wind turbine having the same |
-
1947
- 1947-11-11 GB GB29970/47A patent/GB643890A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1122971B (en) * | 1956-05-21 | 1962-02-01 | Bundy Tubing Co | Heat exchange tube made of a tubular metal strip and a metal rib inserted into the longitudinal seam |
GB2403605A (en) * | 2003-06-21 | 2005-01-05 | Elektro Magnetix Ltd | Machine cooling tube with spiral flow |
GB2403605B (en) * | 2003-06-21 | 2005-09-07 | Elektro Magnetix Ltd | Improvements to cooling system for dynamoelectric machines |
US10236737B2 (en) | 2014-08-14 | 2019-03-19 | Wobben Properties Gmbh | Synchronous generator, in particular multipole synchronous annular generator of a direct-drive wind turbine, and wind turbine having the same |
EP3180839B1 (en) * | 2014-08-14 | 2019-10-23 | Wobben Properties GmbH | Synchronous generator, in particular four-pole synchronous ring generator of a gearless wind turbine, and wind turbine having said synchronous generator |
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