Structure of rotor for generators and method of manufacturing the same rotor
AssigneeIsuzu Ceramics Research Institute Co., Ltd.
InventorHideo Kawamura
Life of this patent
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Abstract
The present invention provides a structure of a rotor for a generator in which a rotor capable of being ground very easily with a high accuracy is incorporated. This structure of a rotor comprises a rotor mounted fixedly on a rotary shaft supported rotatably on housings. The rotor comprises cylindrically arranged members in which segmental members of permanent magnets are assembled together cylindrically, and an outer cylinder provided on an outer circumference of the cylindrically arranged members and comprising windings or woven cloths of fibers. A resin material capable of being ground is packed in clearances between the cylindrically arranged members and outer cylinder and in the clearances in the outer cylinder.
Claims23
A structure of a rotor for a generator comprising a case, a rotor including a rotary shaft supported rotatably in said case, and a stator provided around an outer circumference of said rotor and fixed to said case;
- said rotor comprising segmental members of sintered permanent magnet which are arranged cylindrically about said rotary shaft and extend along said rotary shaft,
- an outer cylinder including at least one of windings and woven cloths of fibers which are arranged around an outer circumferences of said cylindrically arranged segmental members, and
- easily-machined nonmagnetic material filling between any adjoining two of said segmental members and any adjoining fibers of any one of the windings and woven cloth;
- wherein said segmental members are formed by sintering a mixed powder of materials including at least iron, neodymium, samarium, and cobalt;
- wherein said segmental members include a cross sectional configuration which is nearly rectangular and slight-curved;
- said segmental members being set as alternating N-S poles and including said nonmagnetic material between adjacent ones of the segmental members;
- wherein said nonmagnetic material includes a resin material interposed between said segmental members, and said resin material contains fibers of high heat conductivity mixed therein so as to increase the strength and heat conductivity thereof, and
- wherein cylindrical laminated members comprising a permeable material are provided on an inner side of said cylindrically arranged segmental members, a cylindrical porous member mounted fixedly on said rotary shaft and comprising a resin material impregnated nonmagnetic structural material on an inner side of said cylindrical laminated members.
Dependencies are inferred from the claim text.