DYNAMO-ELECTRIC MACHINE WITH THERMOSYPHON Russian patent published in 2019 - IPC H02K9/20 H02K15/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering, in particular to the hollow shaft of an electrical machine. Hollow shaft forms closed cavity, which has evaporation zone and condenser zone. Capacitor zone has an inwardly directed microscale structure. Evaporation and condenser zones by their surrounding elements in each case can be thermally conductively connected. Condenser zone is surrounded by fan. Microscale structure is made as ribbed structure and / or pin-like structure and / or porous mesh structure. Hollow shaft at least in area of condenser zone contains different materials: on surface there are materials with different hardness and heat conductivity, wherein heat-conducting elements are made of soft material with good heat conductivity in form of bulges or pins, and are arranged to protrude from the wall radially outward, and more solid material is provided between heat-conducting elements and around heat-conducting elements.

EFFECT: improved cooling.

12 cl, 6 dwg