Apparatus for insulating slots in stators and rotors of electrical rotary machines

Abstract

Abstract APPARATUS FOR COATING WINDING SLOTS OF ELECTRICTCAL MOTOR CORES SUCH AS STATORS OR ROTORS WITH STREAMS OF INSULATING PARTICLES DEVELOPED EXTERNALLY OF AN AREA IN WHICH THE UNIT TO BE INSULATED IS DISPOSED AND APPLYING THE COATING PARTICLES ONLY ON DESIRED SURFACES OF THE SLOTS BEING COATED WITHOUT CONTAMINATION OF THE ATMOSPHERE IN WHICH THE UNIT BEING COATED IS DISPOSED SO THAT THERE IS SUBSTANTIALLY NO DEPOSITION OF INSULATING PARTICLES ON SURFACES OTHER THAN THOSE BEING COATED. PARTICLES ARE SUSPENDED IN A CHAMBER AND THEN SUBJECTED TO GAS FLOW THROUGH THE CHAMBER AND AN OUTLET SHUTTER OR MASK SO THAT THE INSULATING PARTICLE STREAMS OF DIFFERENT CROSS SECTIONS ARE FORMED SEQUENTIALLY AS THE GAS FLOW LEAVES THE CHAMBER AND ENTER THE AREA IN WHICH THE CORE BEING COATED IS DISPLACED. THE AREA AND ATMOSPHERE IN WHICH THE CORE IS DISPOSED IS THUS FREE OF PARTICLES EXCEPT FOR THE STREAMS OF PARTICLES PASSING THROUGH THE AREA IN THE SLOTS. EXCESS PARTICLES LEAVING THE SLOTS ARE RECOVERED IN A SECOND CHAMBER OUTSIDE OF THE AREA IN WHICH THE CORE IS DISPOSED. THE SECOND CHAMBER IS OPPOSITE TO AND SPACED FROM THE FIRST-MENTIONED CHAMBER AND THE CORE IS DISPOSED THEREBETWEEN. A REVERSE FLOW OF INSULATING PARTICLE STREAMS CAN BE APPLIED FROM THE SECOND CHAMBER AND RECOVERY OF EXCESS MATERIAL MADE AT THE FIRST CHAMBER.

Inventors

• 👤 Erik Frede Christiansen

Bibliographic Details