| 摘要 |
PROBLEM TO BE SOLVED: To drop the partial heating temperature of a cable, and make it hard to deteriorate by heat, by partitioning the uppermost part within each block by an ordinary oil flow conversion barrier, and making the sizes of holes smaller gradually as it goes to the upper part of the oil flow conversion barriers facing a longitudinal oil flow, in all lateral oil paths between coils from the stage below it. SOLUTION: In winding structure, a block 12 is made of plural pieces of coils 18 on each of which a cable 1 is wound, and oil flow conversion barriers 2, 8, 9, and 10 are installed in every section. Moreover, for the lateral oil path 3, the dimensions of the lateral oil paths 3 within each block 13 are made the same in the dimension of approximately 4-6 mm. The uppermost oil flow conversion barrier 2 in the block 12 is made holeless, and other oil flow conversion barriers 8, 9, and 10 are provided with holes different in dimension and numbers at the section in contact with a longitudinal oil path 4 so as to control a refrigerant 11 flowing in the longitudinal oil path 4. The size of the hole 7 is the smallest in the uppermost part of the block 7, and it becomes larger as it goes to the lower stage. This way, the flow velocities 14-17 are controlled by changing the size of the hole 7.
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