Invention Grant
- Patent Title: Permanent-magnet two-phase synchronous electric motor with mechanical start-up for washing machines and similar household appliances, in particular for washing pumps
- Patent Title (中): 具有洗衣机和类似家用电器机械启动的永磁两相同步电动机,特别是用于洗涤泵
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Application No.: US11835105Application Date: 2007-08-07
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Publication No.: US07692353B2Publication Date: 2010-04-06
- Inventor: Elio Marioni
- Applicant: Elio Marioni
- Applicant Address: IT
- Assignee: Askoll Holding S.r.l.
- Current Assignee: Askoll Holding S.r.l.
- Current Assignee Address: IT
- Agency: Akerman Senterfitt
- Priority: EP06016772 20060811
- Main IPC: H02K1/14
- IPC: H02K1/14

Abstract:
The invention relates to a permanent-magnet two-phase synchronous electric motor (1) with mechanical start-up for washing machines and similar, in particular for washing pumps (2), of the type centrally comprising a permanent magnet axial rotor (4) and a stator (5) with a lamination pack core (16) and a double pair of pole pieces (20) with ends enveloping said rotor (4) and with relative windings (L1, L2), wherein the first pair of pole pieces is asymmetrical compared to the second pair of pole pieces. Moreover, said motor is further distinguished for the structure of the stator, which comprises the following characteristics: the ends of the pole pieces (20) are structurally independent and are removably coupled to the lamination pack core; and the lamination pack core has a shorter axial length than the ends of the pole pieces (20). Advantageously, the pole pieces of the stator (5) are obtained by pressing of magnetic powders.
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