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US 2013/0093276 A1Published application
Double-stator/double-rotor type motor and direct drive apparatus for washer using same
AssigneeAmotech Co., Ltd.
InventorByoung Soo Kim
Life of this patent
Estimating the term…
Abstract
Provided are a double-stator/double-rotor type motor, and a direct drive apparatus for a washing machine using the double-stator/double-rotor type motor, in which a nonmagnetic material is provided between inner and outer stators so as to form dual magnetic circuits that are respectively separated for an inner rotor and an outer rotor, and a double stator is disposed between an inner rotor and an outer rotor so as to separably form a magnetic circuit with a shortened magnetic.
Claims10
A double-stator/double-rotor type motor comprising:
- an inner rotor including a first permanent magnet mounted on an outer circumferential surface of an inner back yoke;
- an outer rotor including a second permanent magnet mounted on an inner circumferential surface of an outer back yoke;
- and
- a stator unit that includes a nonmagnetic material that is capable of magnetic circuits that are independently separated for each of the inner rotor and the outer rotor, in order to face the first permanent magnet with a first air gap, to thereby rotate the inner rotor and in order to face the second permanent magnet with a second air gap, to thereby rotate the outer rotor.
1 more element
A direct drive apparatus for a drum-type washing machine, the direct drive apparatus comprising:
- an inner rotor including a first permanent magnet mounted on an outer circumferential surface of an inner back yoke;
- an outer rotor including a second permanent magnet mounted on an inner circumferential surface of an outer back yoke;
- and
- a stator unit that includes a nonmagnetic material that is capable of magnetic circuits that are independently separated for each of the inner rotor and the outer rotor, in order to face the first permanent magnet with a first air gap, to thereby rotate the inner rotor and in order to face the second permanent magnet with a second air gap, to thereby rotate the outer rotor;
- a rotating shaft whose outer circumference is supported to a central portion of the rotors and whose front end is combined with a basket;
- a first bearing that rotatably supports one end of the rotating shaft;
- and
- a second bearing that is provided in the tub to thus rotatably support the other end of the rotating shaft.
5 more elements
Dependencies are inferred from the claim text.