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US 7,030,540 B2Granted
Electric motor and compressor
AssigneeDaikin Industries, Ltd.
InventorsKazuo Ida, Ryuichiro Amano, Hiroaki Kojima
Life of this patent
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Abstract
In an electric motor including a stator core having a plurality of layered steel thin plates, the rigidity of the stator core is maintained and the vibration during its operation is suppressed. Namely, at least parts of the thin plates of the stator core are adhered to each other by a varnish that is an insulating adhesive.
Claims2
A compressor comprising:
- a casing;
- a compressing mechanism disposed in said casing and configured to discharge gas into said casing;
- and
- an electric motor disposed in said casing including
- a stator core having a plurality of layered steel thin plates,
- a plurality of tooth portions disposed on said stator core, and
- a coil wound on each of said tooth portions of said stator core, said coil being wound with concentrated winding,
- said thin plates being adhered to each other at an outer-peripheral edge portion of said stator core and an inner-peripheral edge portion of said stator core by an insulating adhesive, and said thin plates being calked,
- said thin plates forming a plurality of gaps between said thin plates, said gaps having inner and outer portions adjacent said inner-peripheral edge portion and said outer-peripheral edge portion, respectively, and
- said inner and outer portions of said gaps having said insulating adhesive therein.
7 more elements
Dependencies are inferred from the claim text.