| (19) |
 |
|
(11) |
EP 0 408 230 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
27.11.1991 Bulletin 1991/48 |
| (43) |
Date of publication A2: |
|
16.01.1991 Bulletin 1991/03 |
| (22) |
Date of filing: 02.07.1990 |
|
|
| (84) |
Designated Contracting States: |
|
BE DE ES FR GB IT |
| (30) |
Priority: |
10.07.1989 US 377691
|
| (71) |
Applicant: WESTINGHOUSE ELECTRIC CORPORATION |
|
Pittsburgh
Pennsylvania 15222 (US) |
|
| (72) |
Inventors: |
|
- Walk, Steven Robert
Winterport,
Maine 04496 (US)
- Del Vecchio, Robert Michael
Turtle Creek, PA 15145 (US)
- Slepian, Robert Michael
Pittsburgh, PA 15221 (US)
|
| (74) |
Representative: van Berlyn, Ronald Gilbert |
|
23, Centre Heights
London NW3 6JG
London NW3 6JG (GB) |
|
| |
|
| (54) |
Semi-compacted litz-wire cable strands spaced for coolant flow about individual insulated
strands |
(57) An electromagnetic induction coil (38) for a magnetofluidynamic device (36) includes
a cable (22) enclosed within an insulator sheath (18) and composed of multiple individually-insulated
conductor strands (24) wound in Litz-wire fashion in a relatively loose relationship
to one another to form a semi-compacted bundle. The strands in the semi-compacted
bundle define a plurality of empty spaces (26) between individual strands (24) for
permitting coolant flow within the sheath (18) and through the bundle along and about
the individual strands (24) such that amount of surface area of the strands (24) exposed
to contact by the coolant is greater than in a compacted bundle of strands thereby
enhancing the heat transfer capability of the cable (22).