| 摘要 |
PURPOSE:To effectively cool magnetic plates layered in a toroidal direction and obtain high shielding function by housing magnetic plates layered in the toroidal direction in an airtight vessel and connecting feed and exhaust piping of a cooling medium on both ends in the toroidal direction. CONSTITUTION:Feed and exhaust piping 18a, 18b of cooling water are connected to the upper and the lower parts of an airtight vessel 16 in which a plurality of magnetic plates 12 layered in a toroidal direction in the inner part are housed, and these outlet and inlet are opened in a lower header 17a and an upper header 17b formed in a vessel 16. Plural cooling channels 14 are formed in the toroidal direction on each magnetic plate 12 housed in the airtight vessel 16, and both ends of each cooling channel are opened on the lower header 17a and the upper header 17b. But an electric insulator exists among each magnetic plate 12 and in the inner part of the airtight vessel 16, and excess current is reduced. Therefore, a cooling medium flowing in the airtight vessel 16 from the feed and exhaust piping 18a, 18b of the cooling medium is exhausted out of the airtight vessel 16 through the cooling channels 14 of each magnetic plate 12 and so the magnetic plates 12 are effectively cooled. |
