| 摘要 |
PURPOSE:To equalize flow speed distribution of oil flowing through all horizontal oil passages, by making height of top horizontal oil passages taller than that of bottom horizontal oil passages in bent sections. CONSTITUTION:In all circlelike windings formed by piling plural coils 2 in vertical direction, an inside vertical oil passage 5 and an outside vertical oil passage 6 are alternately blocked by bent flow plates 9 to pluralize the bent flow sections. Each one of these bent flow sections is divided into two sections including Region B reaching from the center to the top section and Region A extending from the bottom section to the center. And height of a horizontal oil passage 3 between plural coils 2 in the Region A is made shorter than that of a horizontal oil passage 3 in the Region B. It is possible, by doing so, to equalize flow speed distribution in all the horizontal oil passages 3 in the entire bent flow section and also to equalize temperature distribution of all the coils 2. |
