GB377665A - Improvements in and relating to induction motors - Google Patents
Improvements in and relating to induction motorsInfo
- Publication number
- GB377665A GB377665A GB2345/31A GB234531A GB377665A GB 377665 A GB377665 A GB 377665A GB 2345/31 A GB2345/31 A GB 2345/31A GB 234531 A GB234531 A GB 234531A GB 377665 A GB377665 A GB 377665A
- Authority
- GB
- United Kingdom
- Prior art keywords
- winding
- rotor
- lugs
- wall
- heat
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
377,665. Alternating-current induction motors. DEUTSCHE ELEKTRIZIT€TS-WERKE ZU AACHEN-GARBE, LAHMEYER & CO. AKT.-GES., 191, Julicherstrasse, Aix-la-Chapelle, Germany. Jan. 23, 1931, No. 2345. Convention date, Jan. 24, 1930. Void [Published under Sect. 91 of the Acts]. [Class 35.] Armatures, cooling; casings.- In an induction motor, more particularly for driving heavy rotating masses such as rolling mills which have to be started or reversed frequently, part of the rotor winding projects outside the casing and the winding is designed so that the greater part of the heat generated therein is produced in the projecting part. As shown applied to a squirrel cage motor, one end is completely enclosed but the casing at the other end comprises a fixed wall a and a wall b secured to the rotor with a narrow gap between the walls. The bars c of the rotor winding extend through the wall b and are electrically connected together by lugs d formed on a ring, the material and cross section of the lugs being such that the greater portion of the heat is generated therein. The lugs may be constructed to dissipate as much heat as possible and to act as fan blades or a current of air may be directed on those parts of the winding from a separate fan on the machine or from an external source. A mului-squirrel cage or a phase winding may be employed in the rotor. The resistance of the rotor winding is such that the torque is a maximum at standstill or at a speed far below synchronism.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE377665X | 1930-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB377665A true GB377665A (en) | 1932-07-28 |
Family
ID=6344449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2345/31A Expired GB377665A (en) | 1930-01-24 | 1931-01-23 | Improvements in and relating to induction motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB377665A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2776386A (en) * | 1954-01-29 | 1957-01-01 | Harnischfeger Corp | Electrical-induction torque transmitter |
| GB2286293A (en) * | 1993-12-23 | 1995-08-09 | London Innovation Limited | Adjustable stator: winding construction: cooling and commutator construction inan electric machine |
-
1931
- 1931-01-23 GB GB2345/31A patent/GB377665A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2776386A (en) * | 1954-01-29 | 1957-01-01 | Harnischfeger Corp | Electrical-induction torque transmitter |
| GB2286293A (en) * | 1993-12-23 | 1995-08-09 | London Innovation Limited | Adjustable stator: winding construction: cooling and commutator construction inan electric machine |
| US6040645A (en) * | 1993-12-23 | 2000-03-21 | London Innovation Ltd. | Electrical machines |
| US6459179B1 (en) | 1993-12-23 | 2002-10-01 | Cedric Lynch | Electrical machines |
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