Segmental stator, electric motor having the same, and household appliance

Patent metadata

Field	Value
Publication number	US-10404122-B2
Application number	US-201515328564-A
Country	US
Kind code	B2
Filing date	Jun 25, 2015
Priority date	Jul 31, 2014
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

A segmental stator, an electric motor have same and a household appliance are provided. The segmental stator includes: a plurality of main windings, a plurality of secondary windings, a plurality of winding needles and a wiring board. Each of the main winding and the secondary winding includes a core segment and a winding frame, and the winding frames of the main winding and secondary winding are wound with a main winding wire and a secondary winding wire respectively. The main windings include at least one first main winding separately wound with one main winding wire and at least two second main windings continuously wound with one main winding wire. The plurality of secondary windings include at least one or more of the following: at least one first secondary winding separately wound with one secondary winding wire and at least two second secondary windings continuously wound with one secondary winding wire.

First claim

What is claimed is:

1. A segmental stator, comprising:
a plurality of main windings and a plurality of secondary windings, wherein:
each of the main winding and the secondary winding comprises a core segment and a winding frame disposed to the core segment, and the core segments of the main windings and the core segments of the secondary windings are staggered and connected with one another in a circumferential direction to form an annular shape;
the plurality of main windings comprise:
a first main winding wound with a first main winding wire; and
at least two second main windings continuously wound with a second main winding wire separate from the first main winding wire;

the plurality of secondary windings comprise at least one of:
a first secondary winding wound with a first secondary winding wire; and
at least two second secondary windings continuously wound with a second secondary winding wire;

a plurality of winding needles disposed on the winding frames respectively to lead out wire heads of corresponding main winding wires or secondary winding wires respectively; and
a wiring board mounted to the plurality of main windings and the plurality of secondary windings that are connected in the annular shape, upper ends of the winding needles passing through the wiring board.

2. The segmental stator according to claim 1 , wherein the plurality of main windings include four main windings, and the plurality of secondary windings include four secondary windings are provided.

3. The segmental stator according to claim 1 , wherein the main windings comprise one first main winding and rest of the main windings are the second main windings, and the secondary windings comprise one first secondary winding and rest of the secondary windings are the second secondary windings.

4. The segmental stator according to claim 1 , wherein the main windings comprise one first main winding and rest of the main windings are the second main windings, and the secondary windings only comprise the at least two second secondary windings.

5. The segmental stator according to claim 4 , wherein the plurality of winding needles comprise:
two first winding needles disposed at the winding frame of the one first main winding;
two second winding needles respectively disposed at the winding frames of two of the second main windings farthest away from each other among the second main windings; and
two third winding needles respectively disposed at the winding frames of two adjacent ones of the second secondary windings.

6. The segmental stator according to claim 5 ,
wherein each winding frame comprises:
an upper frame comprising:
an upper outer arc plate;
an upper inner arc plate disposed at a radially inner side of the upper outer arc plate via a first connecting portion; and
winding posts provided at two ends of a top of the upper inner arc plate; and
wherein each of a top of the upper outer arc plate and the top of the upper inner arc plate is provided with two hollow first patch posts spaced apart from each other; and

a lower frame comprising:
a lower outer arc plate;
a lower inner arc plate disposed at a radially inner side of the lower outer arc plate via a second connecting portion
wherein each of a bottom of the lower outer arc plate and a bottom of the lower inner arc plate is provided with two hollow second patch posts spaced apart from each other;

wherein the upper frame is inserted in a top of the lower frame, and a corresponding core segment is fitted over a junction of the upper frame and the lower frame;

wherein:
the two first winding needles are respectively disposed in the first patch posts on the tops of the upper outer arc plate and the upper inner arc plate of the winding frame of the first main winding;
the two second winding needles are respectively disposed in the first patch posts on the tops of the upper inner arc plates of the winding frames of the two of the second main windings farthest away from each other among the second main windings; and
the two third winding needles are respectively disposed in the second patch posts on the bottoms of the lower inner arc plates of the winding frames of the two adjacent ones of the second secondary windings; and

wherein the first winding needles, the second winding needles, and the third winding needles are located on a same plane and all connected to the wiring board.

7. The segmental stator according to claim 6 , wherein the upper outer arc plate is flush with the lower outer arc plate in an up-and-down direction, and the upper inner arc plate is flush with the lower inner arc plate in the up-and-down direction.

8. The segmental stator according to claim 1 , wherein:
two ends of each core segment is provided with a first positioning portion and a second positioning portion;
the first positioning portion of one main winding and the second positioning portion of one secondary winding adjacent to a first side of the one main winding are mutually fitted and positioned; and
the second positioning portion of the one main winding and the first positioning portion of another secondary winding adjacent to a second side of the one main winding are mutually fitted and positioned.

9. The segmental stator according to claim 1 , wherein the winding needles are located within a range of 180 degrees of the wiring board in the circumferential direction.

10. The segmental stator according to claim 1 , wherein a top end of the core segment of one main winding is flush with a bottom end of the core segment of one secondary winding adjacent to the one main winding.

11. The segmental stator according to claim 1 , wherein the wiring board has a semi-annular shape.

12. An electric motor, comprising:
a rotor assembly comprising a rotor shaft and a rotor core disposed at the rotor shaft; and
a segmental stator comprising:
a plurality of main windings and a plurality of secondary windings, wherein:
each of the main winding and the secondary winding comprises a core segment and a winding frame disposed to the core segment, and the core segments of the main windings and the core segments of the secondary windings are staggered and connected with one another in a circumferential direction to form an annular shape;
the plurality of main windings comprise:
a first main winding wound with a first main winding wire; and
at least two second main windings continuously wound with a second main winding wire separate from the first main winding wire;

the plurality of secondary windings comprise at least one of:
a first secondary winding wound with a first secondary winding wire; and
at least two second secondary windings continuously wound with a second secondary winding wire;

a plurality of winding needles disposed on the winding frames respectively to lead out wire heads of corresponding main winding wires or secondary winding wires respectively; and
a wiring board mounted to the plurality of main windings and the plurality of secondary windings that are connected in the annular shape, upper ends of the winding needles passing through the wiring board;

wherein the segmental stator is fitted over the rotor assembly and the rotor assembly is rotatable relative to the segmental stator.

13. A household appliance, comprising an electric motor according to claim 12 .

14. The electric motor according to claim 12 , wherein the main windings comprise one first main winding and rest of the main windings are the second main windings, and the secondary windings only comprise the at least two second secondary windings.

15. The electric motor according to claim

Assignees

• Gd Midea Env Appliances Mfg Co Ltd
• Midea Group Co Ltd

Inventors

• Peng Yingqing
• Han Zhanfei
• Li Jianxiong
• Wang Zhigang

Classifications

• H02K2203/09

  Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations · CPC title

• H02K17/08

  Motors with auxiliary phase obtained by externally fed auxiliary windings, e.g. capacitor motors · CPC title

• H02K17/06

  having windings arranged for permitting pole-changing · CPC title

• H02K3/522 Primary

  for generally annular cores with salient poles · CPC title

• H02K3/18

  Windings for salient poles · CPC title