STATOR, MOTOR AND COMPRESSOR

• US 20150010412A1
• Filed: 07/01/2014
• Published: 01/08/2015
• Est. Priority Date: 07/02/2013
• Status: Abandoned Application

• Current Assignee: Danfoss Tianjin Ltd.
• Original Assignee: Danfoss Tianjin Ltd.
• Inventors: Liu, Wanzhen, Yao, Li, Lin, Yan, Liu, Guangqiang, Wang, Zhenyu, Tang, Weiping
• Application Number:
  US14/320,883
• Publication Number:
  US 20150010412A1
• Time in Patent Office: Days
• US Class Current: 417/410.1
• CPC Class Codes: H02K 3/12 arranged in slots
• CPC Class Codes: H02K 3/28 Layout of windings or of connections between windings windings for pole-changing H02K17/06, H02K17/14, H02K19/12, H02K19/32

Abstract

A stator, a motor and a compressor are provided. A stator applied to a motor includes: a stator iron core; a plurality of stator teeth extending inwards along a radial direction of the stator; stator slots distributed between the plurality of stator teeth; and a winding wound around the stator teeth to generate a rotating magnetic field, where at least one phase of winding or a coil forming the at least one phase of winding is formed by different wires, and the different wires are connected in a serial or serial-parallel manner to form the coil or the least one phase winding.

Claims

1. A stator applied to a single-phase or multi-phase motor, comprising:

a stator iron core;

a plurality of stator teeth extending inwards along a radial direction of the stator;

stator slots distributed between the plurality of stator teeth; and

a single-phase winding or multi-phase windings wound around a stator tooth to generate a rotating magnetic field, wherein at least one phase of winding among the windings or a coil forming the at least one phase of winding is made of different wires, and the different wires are connected in a serial or serial-parallel manner to form the coil or the at least one phase of winding.

2. The stator according to claim 1, wherein

inside one same stator slot, at least two types of wires are connected in a serial manner to form the coil or the at least one phase of winding.

3. The stator according to claim 2, wherein

the at least two types of wires are a copper wire and an aluminum wire respectively, and the copper wire and the aluminum wire are connected in series to form the coil or the at least one phase of winding.

4. The stator according to claim 1, wherein,

inside different stator slots, at least two types of wires are connected in a serial manner to form the coil or the at least one phase of winding.

5. The stator according to claim 1, wherein

inside one same stator slot, the different wires are connected in a serial-parallel manner to form the coil or the at least one phase of winding.

6. The stator according to claim 1, wherein

inside different stator slots, the different wires are connected in a serial-parallel manner to form the coil or the at least one phase of winding.

7. The stator according to claim 1, wherein

the different wires are wires made of a same material and having different cross-sectional areas, or wires made of different materials and having different electrical conductivities.

8. The stator according to claim 7, wherein,

a core portion of each of the different wires is made of a metal material and is circumferentially configured with an insulating layer or an insulating paint.

9. The stator according to claim 8, wherein,

the metal material is any one of copper, aluminum, silver, gold, and an alloy.

10. The stator according to claim 2, wherein

the different wires are wires made of a same material and having different cross-sectional areas, or wires made of different materials and having different electrical conductivities.

11. The stator according to claim 4, wherein

the different wires are wires made of a same material and having different cross-sectional areas, or wires made of different materials and having different electrical conductivities.

12. The stator according to claim 5, wherein

the different wires are wires made of a same material and having different cross-sectional areas, or wires made of different materials and having different electrical conductivities.

13. The stator according to claim 6, wherein the different wires are wires made of a same material and having different cross-sectional areas, or wires made of different materials and having different electrical conductivities.

14. A motor, comprising a rotor and a stator, the rotor being rotatably disposed in the stator and separated from the stator by a distance, wherein

the stator comprises:

a stator iron core;

a plurality of stator teeth extending inwards along a radial direction of the stator;

stator slots distributed between the plurality of stator teeth; and

a single-phase winding or multi-phase windings wound around a stator tooth to generate a rotating magnetic field, wherein at least one phase of winding among the windings or a coil forming the at least one phase of winding is made of different wires, and the different wires are connected in a serial or serial-parallel manner to form the coil or the at least one phase of winding.

15. The motor according to claim 14, wherein

inside one same stator slot, at least two types of wires are connected in a serial manner to form the coil or the at least one phase of winding, or the at least two types of wires are connected in a serial-parallel manner to form the coil or the at least one phase of winding;

or,

inside different stator slots, the at least two types of wires are connected in a serial manner to form the coil or the at least one phase of winding, or the at least two types of wires are connected in a serial-parallel manner to form the coil or the at least one phase of winding.

16. The motor according to claim 15, wherein,

the motor is a constant-frequency motor or a variable-frequency motor.

17. The motor according to claim 16, wherein,

the motor is a three-phase induction motor or a three-phase permanent-magnet motor.

18. The motor according to claim 17, wherein,

a working voltage of the motor or a driver of the motor is 208 V to 575 V.

19. A compressor, comprising a compression mechanism, and a motor comprising a rotor and a stator, the rotor being rotatably disposed in the stator and separated from the stator by a distance, wherein

the stator comprises:

a stator iron core;

a plurality of stator teeth extending inwards along a radial direction of the stator;

stator slots distributed between the plurality of stator teeth; and

a single-phase winding or multi-phase windings wound around a stator tooth to generate a rotating magnetic field, wherein at least one phase of winding among the windings or a coil forming the at least one phase of winding is made of different wires, and the different wires are connected in a serial or serial-parallel manner to form the coil or the at least one phase of winding.

20. The compressor of claim 19, wherein in the stator, inside one same stator slot, at least two types of wires are connected in a serial manner to form the coil or the at least one phase of winding, or the at least two types of wires are connected in a serial-parallel manner to form the coil or the at least one phase of winding;

or,

in the stator, inside different stator slots, the at least two types of wires are connected in a serial manner to form the coil or the at least one phase of winding, or the at least two types of wires are connected in a serial-parallel manner to form the coil or the at least one phase of winding.