To provide an indication motor rotor capable of improving motor performance by concentrating portions under magnetic saturation conditions of rotor teeth. The rotor 1 of an induction motor of this invention may include slots 3 formed approximately in the shape of a T. The slots 3 may be formed so that top slots 3 a are arranged on an outer peripheral portion of a rotor core 1 a , and bottom slots 3 b are arranged on an inner side of the top slots 3 a . The width in the circumferential direction of the top slot 3 a is wider than the width in the circumferential direction of the bottom slot 3 b , and the width in the circumferential direction of a rotor tooth 4 between adjacent top slots 3 a is narrower than the width in the circumferential direction of the rotor tooth 4 between adjacent bottom slots 3 b.

Claims

10 · 1 independent · depth 3

10 granted claims

›1.independentAn induction motor rotor comprising:na rotor core with slots formed therein, anda squirrel-cage secondary conductor including a nonmagnetic and conduc…+9

›2.↳ 1The induction motor rotor according to claim 1, wherein A is defined as a width in the radial direction of the top slot, B is defined as a width in th…d2

›3.↳ 1The induction motor rotor according to claim 1, wherein A is defined as a width in the radial direction of the top slot, C is defined as the width in …d2

›4.↳ 1The induction motor rotor according to claim 1 further comprising:na bridge between the top slot and the outer edge of the rotor core;wherein a width …d2

›5.↳ 1The induction motor rotor according to claim 1,nwherein the width in the circumferential direction of the top slot is wider than a width in the circum…d2

›6.↳ 1The induction motor rotor according to claim 1, wherein the slot of the rotor core includes an opening that opens to outside at the outer edge of the …d2+1

›7.↳ 1An induction motor comprising the induction motor rotor according to claim 1.d2+2

Classifications

6 codes

IPC · International Patent Classification

Section H — Electricity

H02K17/16
H02K1/16

USPC · US Patent Classification

310/216.69310/216.71310/212310/211

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Pendency

4.1 y

1,499 days filing → grant

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after a restriction

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no RCE

Examiner

Quyen Leung

art unit 2834 · TC 2800

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Citations: 74 back · 0 forward

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Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20100253174 A1	7 Oct 2010

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