| 摘要 |
In the method cooling elements (102) are arranged in connection with a coil (100) and cooling liquid is led to flow through the cooling elements. The cooling elements are arranged in connection with the coil so that the flow route of the cooling liquid does not form a uniform loop around the coil or around an individual conductor wire of the coil. The cooling system comprises at least three cooling elements, which are placed on the perimeter of the coil, so that the distance between adjacent cooling elements is essentially equal. The cooling elements can be placed outside the coil against the outer surface (122) of the coil, inside the coil against the inner surface (120) of the coil or inside the coil between superposed conductor wire or foil layers of the coil. The flow route of the cooling liquid comprises a cooling channel formed inside a cooling element, a first flow tube (112a) for leading the cooling liquid into the cooling channel and a second flow tube (112b) for leading the cooling liquid out of the cooling channel. The face surface (124, 126) of the cooling elements settling against the inner or outer surface of the coil can be curved. The coil to be cooled can be the coil of a choke or a transformer. |
