Title:
洗濯乾燥機のファン駆動用永久磁石式回転電機
Document Type and Number:
Japanese Patent JP5193548
Kind Code:
B2
Abstract:
The invention relates to fan-driven permanent magnet rotary motor of a washing dryer, which uses a low speed corresponding to a high-speed rotation, in particular, can inhibit the temperature rise during light-load. A stator which has performing armature winding is formed in a plurality of slots on the stator core, a rotor of the permanent magnet which is housed in a plurality of permanent magnetinsertion holes on the rotor core can be freely supported in the internal circumstance of the stator through prescribed clearance rotation, a tangent plane is formed on the external circumstance between the permanent magnets of the rotor core. When the jaw opening of the rotor magnetic pole located at the upper side of the permanent magnet is set as theta1, the jaw opening of the tooth width is set as theta2, and the slot space of the slot is set as theta3, the constitution satisfies the condition of theta1<= theta2<=theta3, and the ratio of theta2/theta3 is more than 55 percent; when the jawopening of the magnetic pole piece located in the teeth internal circumstance side and extending along the circumference direction is set as theta 4, the ratio of theta2/theta4 is more than 64%.
Inventors:
Akira Akutsu
Seiji Iizuka
Haruo Oharaki
Eiji Toyota
Seiji Iizuka
Haruo Oharaki
Eiji Toyota
Application Number:
JP2007258218A
Publication Date:
May 08, 2013
Filing Date:
October 02, 2007
Export Citation:
Assignee:
Hitachi Appliances, Inc.
International Classes:
H02K21/16; D06F25/00; D06F58/08; H02K1/14; H02K1/22; H02K1/27
Domestic Patent References:
| JP2004364389A | ||||
| JP2003284275A | ||||
| JP2006304546A | ||||
| JP2003319618A | ||||
| JP2004222410A | ||||
| JP2001037119A | ||||
| JP2002058218A | ||||
| JP2004048912A |
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Yuji Toda