Method for manufacturing a support construction for the winding in an electrical machine
AssigneeOy Stromberg AB
InventorsErkki Merikallio, Paavo Paloniemi
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Abstract
A method for the manufacture of a support construction for the coil ends in an electrical machine. According to the method, hollow objects substantially filled with a powdery filler agent and provided with porous walls are placed into the winding before its impregnation. The air spaces in said hollow objects are substantially filled in connection with the impregnation such that said objects, after hardening of the impregnation agent, constitute strong and rigid cast-plastics components.
Claims9
A method for the manufacture of a support structure for the coil ends in an electrical machine comprising arranging in the winding at least one hollow supporting body having a porous wall and filled with substantially particulate filler agent and thereafter impregnating the body with a liquid hardenable impregnation agent and hardening the impregnation agent, at least part of the particles and particle size distribution in the filler agent being of a magnitude suitable for blocking pores in the porous wall and thereby reducing the flow-off of the impregnation agent from the filler agent after the impregnation.
Dependencies are inferred from the claim text.