# US 2019/0319501 A1 · Stator for motor, motor and compressor

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- Number: US 2019/0319501 A1
- Document ID: US20190319501A1
- Status: Published application
- Kind: A1
- Application number: 16/345,904
- Filed: 2017-08-28
- Published: 2019-10-17
- Earliest claimed: 2016-10-31
- Assignees: Guangdong Meizhi Precision-Manufacturing Co., Ltd.
- Applicants: Guangdong Meizhi Precision-Manufacturing Co., Ltd.
- Inventors: Dong XIANG; Qingxuan FU; Jun LIU; Xiuxiu QI; Youbin LUO
- Web page: https://patentgrep.com/patent/US20190319501A1

## CPC

- H02K 1/165: {Shape, form or location of the slots}
- F25B 1/00: Compression machines, plants or systems with non-reversible cycle (F25B3/00, F25B5/00, F25B6/00, F25B7/00, F25B9/00 take precedence)
- H02K 1/16: Stator cores with slots for windings
- H02K 3/02: Windings characterised by the conductor material
- H02K 3/30: Windings characterised by the insulating material
- H02K 3/50: Fastening of winding heads, equalising connectors, or connections thereto
- H02K 2203/09: Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
- H02K 2213/03: Machines characterised by numerical values, ranges, mathematical expressions or similar information
- H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53})
- F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS

## Abstract

Provided are a stator, a motor and a compressor for a motor. The stator (100) includes: a substantially annular stator body (1). The stator body (1) is formed by stacking a plurality of silicon steel sheets. The magnetic induction intensity of the silicon steel sheets is B, B>1.79 T. A plurality of stator teeth (2) arranged at intervals are formed on an inner peripheral wall of the stator body (1), and an accommodating groove (3) is defined between two adjacent stator teeth (2). A diameter of a circle where inner end surfaces of the plurality of stator teeth (2) are located is D1 and a diameter of a circle where an outer end of the stator body (1) is located is D2, and D1 and D2 satisfy: D1/D2>0.515.

## Claims

### Claim at position 1

1-9. (canceled)

### Claim 10

A stator for a motor, comprising:
a stator body comprising:
an elongated wall extending along an axis, wherein the elongated wall has an inner surface and an outer surface to define a substantially annular shape of the stator body, and
a plurality of stator teeth formed on the inner surface of the elongated wall,
wherein the plurality of stator teeth are circumferentially spaced from one another, such that an accommodating groove is defined circumferentially between every two adjacent stator teeth;
wherein each stator teeth has an inner end surface and the inner end surfaces of the plurality of stator teeth collectively define a first imaginary circle in a plane substantially perpendicular to the axis, wherein the first imaginary circle has a first diameter D1;
wherein the outer surface of the elongated wall defines a second imaginary circle in the plane, wherein the second imaginary circle has a second diameter D2; and
wherein the accommodating grooves formed by the plurality of stator teeth collectively define a projected area S on the plane, and the projected area S satisfies S >(0.215*(D22−D12)*3.14)/4 mm2.

### Claim 11 (depends on 10)

The stator according to claim 10, wherein the stator body is formed by stacking a plurality of silicon steel sheets having magnetic induction intensity that is greater than 1.79 T,

### Claim 12 (depends on 11)

The stator according to claim 11, wherein each silicon steel sheet has a thickness of 0.35 mm or 0.5 mm.

### Claim 13 (depends on 11)

The stator according to claim 11, wherein the plurality of silicon steel sheets are processed by cold rolling.

### Claim 14 (depends on 10)

The stator according to claim 10, wherein the first diameter D1 and the second diameter D2 satisfy D1/D2>0.515.

### Claim 15 (depends on 10)

The stator according to claim 10,
wherein each stator tooth has a width bt1, and every two adjacent accommodating grooves define a pitch t1 between the two adjacent accommodating grooves, and
wherein the width bt1 and the pitch t1 satisfy bt1/t1<0.48.

### Claim 16 (depends on 10)

The stator according to claim 10, wherein each stator tooth comprises a limiting portion provided at an inner end of the stator tooth and configured to limit a position of a coil block mountable to the stator.

### Claim 17 (depends on 16)

The stator according to claim 16, wherein the inner end surface of each stator tooth is provided by the limiting portion.

### Claim 18 (depends on 10)

The stator according to claim 10, wherein the elongated wall is substantially cylindrical and the inner surface and the outer surface of the cylindrical wall are substantially parallel to the axis.

### Claim 19 (depends on 1)

A motor, comprising:
a stator according to claim 1; and
a coil block configured to be wound around the plurality of stator teeth and accommodated in the accommodating grooves.

### Claim 20 (depends on 19)

The motor according to claim 19, wherein a power cord of the coil block is selected from a group consisting of a polyamide-imide composite polyester imide enamelled copper wire, a polyamide-imide composite polyester imide enamelled aluminum wire, a polyester enamelled copper wire, a polyester enamelled aluminum wire, and a copper-clad aluminum wire.

### Claim 21 (depends on 19)

A compressor, comprising a motor according to claim 19.