Patent
Liquid-sealed motor
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TLDR
In this article, a lower bracket 7 is axially connected via a connecting hole 21, and a lower collar 5 is watertightly connected with a lowercollar 5, disposed in chamber 26 between a frame 1 and a can 3, and the interior is connected with the hole 24.Abstract:
PURPOSE:To prevent the damage of a can without increasing the size of a motor by partitioning a chamber between a frame and the can be an elastic material, and connecting one chamber with the periphery of a rotor or out of the frame. CONSTITUTION:A lower bracket 7 is axially connected via a connecting hole 21. One side of the hole 21 is connected with a room 23 in a cylinder 22 of one end side of a thrust case 15. A lower collar 5 is axially connected with a connecting hole 21 via a connecting hole 24. Doughnut-shaped metal bellows 25 is watertightly connected with a lower collar 5, disposed in chamber 26 between a frame 1 and a can 3, and the interior is connected with the hole 24. Even if the volume of insulating oil B is large and expanded, the interior of the bellows 25 disposed in the chamber 26 is connected through the holes 21, 24, the chamber 23 and a connecting slot 11 with the periphery of a rotor 12. Accordingly, the bellows 25 can elongate or contract due to the pressure difference between the pressure of the periphery of the rotor 12 and the pressure in the chamber 26, and the pressure difference is absorbed.read more
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