DIRECT-CURRENT MOTOR Russian patent published in 2003 - IPC

FIELD: electromechanical engineering; contactless dc motors. SUBSTANCE: dc motor has armature in the form of wound magnetically soft iron stack mounted on shaft and ball-bearing supports installed in end shields; armature is disposed in field of frame-mounted stator in the form of magnetically soft iron stack carrying radial- field winding; armature and stator are placed in hermetically sealed frame with vacuum-tight end shields filled with inert gas; newly introduced in motor are cathodes, anodes, and filaments; insulating bushing secured on end shield carries fixed cathode and filament of this cathode; radially secured in opposition to cathode over axis of revolution on armature shaft by means of insulating electrode holder are 2n plate anodes, where n≤3, that form cylindrical surface; same electrode holder carries 2n movable cathode plates disposed in opposition to respective plates of movable anodes over concentric cylindrical surface of smaller radius; insulating bushing secured on end shield also mounts filaments of movable cathodes as well as fixed anode mounted in opposition to fixed cathode with its working surface facing movable cathodes away from shaft axis of revolution; starting and finishing leads of armature-winding coils are connected to respective diametrically opposite plates of movable anodes and cathodes; fixed cathode is connected to negative hermetically sealed lead and fixed anode, to positive one, both designed for connection to armature power supply. EFFECT: simplified design of contactless motor dispensing with electronic switching circuits. 1 cl, 3 dwg