MY119392A - Rotary electrical machines - Google Patents

Abstract

A ROTARY ELECTRICAL MACHINE 1 COMPRISING A PLURALITY OF DISC-SHAPED STATOR STAGES 3, 5, 7 AND A PLURALITY OF DISC-SHAPED ROTOR STAGES 2, 4, 6, 8, EACH OF THE ROTOR STAGES 2, 4, 6, 8 BEING RESPECTIVELY ALTERNATELY INTERLEAVED WITH THE STATOR STAGES 3, 5, 7. A SPACE 94, 96 IS PROVIDED BETWEEN EACH STATOR STAGE AND ITS ADJACENT ROTOR STAGE. EACH OF THE STATOR STAGES IS PROVIDED WITH AT LEAST TWO STATOR WINDINGS, DEFINING A PASSAGE 82, 84 THEREBETWEEN ADJACENT WINDINGS. A COILED PIPE (100, 102 -FIGURES 3A AND 3B) IS DISPOSED IN OR FORMED INTEGRALLY WITH EACH OF THE PASSAGES 82, 84 IN SUBSTANTIALLY THE SAME PLANE AS THE STATOR STAGE, SUCH THAT THE OUTLET OF ONE PIPE 100 IS COUPLED WITH THE INLET OF THE PIPE 102 DISPOSED IN THE ADJACENT PASSAGE. IN USE, FLUID, FOR EXAMPLE AIR, HELIUM, WATER OR OIL IS CAUSED TO FLOW AROUND THE COILED PIPES (100, 102) IN THE PASSAGES BETWEEN THE STATOR WINDINGS. AT THE SAME TIME, COOLING GAS, FOR EXAMPLE, AIR OR HELIUM, IS CAUSED TO PASS THROUGH THE STATOR-ROTOR SPACES SO AS TO COOL THE MAGNETS 10, ETC. AND THE RETENTION HOOPS 18, ETC. OF THE ROTOR STAGE AS WELL AS THE OUTER SURFACES OF THE STATOR STAGE. ALTERNATIVELY, THE STATOR-ROTOR SPACES MAY BE HELD UNDER A VACUUM. (FIG. 1)