CN110971020A

CN110971020A - Modularized motor stator and energy-saving motor with same

Info

Publication number: CN110971020A
Application number: CN201911422607.8A
Authority: CN
Inventors: 葛剑优; 祝振卿
Original assignee: Fuyikai Group Co ltd
Current assignee: Fuyikai Group Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-04-07

Abstract

The invention discloses a modularized motor stator, which comprises a shell and a plurality of stator magnetic poles, wherein a cavity with an outer circular cross section is formed in the shell, each stator magnetic pole is composed of a stator core and an electromagnetic coil wound on the stator core, the tail ends of a plurality of stator cores are detachably connected with the side wall of the shell, the head end of each stator core faces to the central axis of the cavity, and the mounting surface of each stator core is perpendicular to the central axis of the cavity. This modularization motor stator, the stator is formed by a plurality of stator magnetic poles concatenation, and the stator magnetic pole is connected with shell body detachably. The output power of the motor can be adjusted by increasing or decreasing the number of stator poles when in use. The modularized motor stator is high in energy-saving efficiency, can adapt to sine wave alternating current work and pulse square wave work, and is very suitable for being used in an industrial three-phase variable frequency motor. The invention also discloses an energy-saving motor.

Description

Modularized motor stator and energy-saving motor with same

Technical Field

The present invention relates to motors, and more particularly, to a modular motor stator and an energy saving motor having the same.

Background

An electric Motor (Motor) is a device that converts electrical energy into mechanical energy. The electromagnetic power generator utilizes an electrified coil (namely a stator winding) to generate a rotating magnetic field and acts on a rotor (such as a squirrel-cage closed aluminum frame) to form magnetoelectric power rotating torque. The motors are divided into direct current motors and alternating current motors according to different power supplies, most of the motors in the power system are alternating current motors, and can be synchronous motors or asynchronous motors (the rotating speed of a stator magnetic field of the motor is different from the rotating speed of a rotor to keep synchronous speed). The motor mainly comprises a stator and a rotor, and the direction of the forced movement of the electrified conducting wire in a magnetic field is related to the current direction and the direction of a magnetic induction line (magnetic field direction). The working principle of the motor is that the magnetic field exerts force on current to rotate the motor.

The stator of the former motor is fixed and invariable, and after the coil is wound on the stator, the working parameters of the motor such as voltage, current and power can not change any more.

Disclosure of Invention

The invention aims to provide a modular motor stator. Another object of the present invention is to provide an energy saving motor having the modular motor stator.

According to one aspect of the invention, a modularized motor stator is provided, which comprises an outer shell and a plurality of stator magnetic poles fixed on the inner wall of the outer shell, wherein a cavity with an outer circular cross section is formed inside the outer shell, each stator magnetic pole is composed of a stator core and an electromagnetic coil wound on the stator core, the plurality of stator cores are radially arranged along the radial direction of the cavity, the tail ends of the stator cores are detachably connected with the side wall of the outer shell, the head ends of the stator cores face the central axis of the cavity, and the mounting surfaces of the stator cores are perpendicular to the central axis of the cavity.

The modularized motor stator adopting the technical scheme is formed by splicing a plurality of stator magnetic poles, and the stator magnetic poles are detachably connected with the outer shell. The output power of the motor can be adjusted by increasing or decreasing the number of the stator magnetic poles in practical use. The output power of the motor is increased when the number of the stator magnetic poles is increased, and the output power of the motor can be reduced when the number of the stator magnetic poles is reduced. The modularized motor stator is high in energy-saving efficiency, can adapt to sine wave alternating current work and pulse square wave work, and is very suitable for being used in an industrial three-phase variable frequency motor.

Furthermore, the head end of the stator core is provided with an arc-shaped protection part, the protection part of the stator core arranged in the cavity encloses a rotor space with a circular cross section, and the rotor space is used for installing a rotor of the motor. The protection part can protect the electromagnetic coil wound on the stator core and can surround a relatively closed rotor space, so that the magnetic force generated by the electromagnetic coil is fully and efficiently utilized.

Further, the stator core is evenly distributed along the circumference of the inner side wall of the outer shell. Thereby making the rotor operate more stably.

Furthermore, two sides of two adjacent stator cores are connected and form a closed annular whole. Therefore, an annular magnetic loop can be formed, and the modular motor stator is more energy-saving.

Furthermore, two sides of each stator core are fixedly connected with two adjacent stator cores in an inserting mode. Therefore, the stator core is more convenient to mount.

Specifically, the two sides of the stator core are respectively provided with a mortise and a tenon strip which are matched with each other.

In this embodiment, the stator core has a main body portion for winding the electromagnetic coil, the tail end of the main body portion is an arc-shaped installation portion, the arc radian of the installation portion is matched with the radian of the side wall of the cavity, and the head end of the main body portion is a protection portion.

Preferably, the installation department both sides are equipped with tongue-and-groove and tenon strip respectively, and tongue-and-groove and tenon strip are mutually supported.

In some embodiments, the stator core has a mounting hole therethrough, and a bolt passes through the mounting hole to fixedly connect the stator core to the cavity sidewall.

Furthermore, two ends of the outer shell are respectively provided with an end cover, the end covers are respectively fixed by the two ends and seal the outer shell, and the end covers are also provided with bearings for mounting the rotor spindle.

According to another aspect of the present invention, there is provided an energy saving electric motor comprising the modular motor stator described above and a rotor and a spindle cooperating with the modular motor stator.

Drawings

Fig. 1 is a schematic structural view of a modular motor stator according to an embodiment of the present invention.

Fig. 2 is an assembly view of the modular motor stator of fig. 1.

Fig. 3 is a schematic longitudinal sectional view of the modular motor stator of fig. 1.

Fig. 4 is a cross-sectional schematic view illustrating a stator of the modular motor shown in fig. 1.

Fig. 5 is a schematic view showing a structure of the stator core shown in fig. 4.

Fig. 6 is a schematic structural diagram of an energy-saving motor according to an embodiment of the present invention.

Fig. 7 is a cross-sectional view of the energy saving motor shown in fig. 6.

Fig. 8 is a schematic view showing the structure of the rotor and the main shaft shown in fig. 7.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

Fig. 1 to 4 schematically show a modular motor stator according to an embodiment of the present invention.

As shown in the figure, the device comprises an outer shell 2 and a stator 1 consisting of a plurality of stator magnetic poles fixed on the inner wall of the outer shell 2, wherein a cavity a with an outer circular cross section is formed inside the outer shell 2.

The rotor magnetic pole is composed of a rotor core 11 and an electromagnetic coil (not shown) wound around the rotor core 11. Since winding the electromagnetic coil on the iron core is a conventional technique in the field of manufacturing and maintaining the motor, a practitioner who is engaged in the manufacturing and maintaining work of the motor can wind the required electromagnetic coil according to the actual requirement, and may adjust the parameters such as the number of turns of the wound electromagnetic coil due to the adjustment of the rated voltage or the rated power of the motor. In the present embodiment, therefore, by default, a person skilled in the art can design the required electromagnetic coils as required and wind them on the stator core 11 by hand or by machine to form the rotor poles. In view of the above, the electromagnetic coil on the stator core 11 is not shown in the drawings of the present embodiment in combination with the simple principle for convenience of description.

A plurality of stator cores 11 forming the stator 1 are radially arranged along the cavity a, and the tail ends thereof are detachably connected with the side wall of the outer shell 2.

The head end of the stator core 11 faces the central axis of the cavity a.

The mounting surface of the stator core 11 is perpendicular to the central axis of the cavity a.

Further, the head end of the stator core 11 has an arc-shaped protection portion 11B, and the protection portions of the stator core 11 disposed in the cavity a enclose a rotor space B having a circular cross section.

The rotor space B is used for mounting a rotor of the motor.

The protection part 11B can protect the electromagnetic coil wound on the stator core 11, and can surround a relatively closed rotor space B, thereby being beneficial to fully and efficiently utilizing the magnetic force generated by the electromagnetic coil.

Stator core 11 is evenly distributed along the circumference of the inner side wall of outer shell 2. Thereby making the rotor operate more stably.

Two adjacent stator cores 11 are connected at two sides and form a closed annular whole body. Therefore, an annular magnetic loop can be formed, and the modular motor stator is more energy-saving.

Further, two sides of the stator core 11 are fixedly inserted into two adjacent stator cores 11. Therefore, the stator core is more convenient to mount.

Specifically, the two sides of the stator core 11 are respectively provided with a mortise and a tenon strip, and the mortise and the tenon strip are mutually matched.

As shown in fig. 5, the stator core 11 has a main body portion 11a for winding the electromagnetic coil. The tail end of the main body 11a is an arc-shaped mounting part 11 c.

The radian of the cambered surface of the mounting part 11c is matched with the radian of the side wall of the cavity A.

The head end of the main body is a protector 11 b.

Preferably, the mounting portion 11c is provided at both sides thereof with a mortise 112b and a tenon 112a, respectively, and the mortise 112b and the tenon 112a are engaged with each other.

In some embodiments, the stator core 11 has a mounting hole 111 therethrough, and a bolt 5 or screw or other fastener passes through the mounting hole 11 to fixedly connect the stator core 11 to the side wall of the cavity a.

In this embodiment, two ends of the outer casing 2 are respectively provided with an end cover (3, 4), the end covers (3, 4) are respectively fixed by the two ends and seal the outer casing 2, and the end covers (3, 4) are further provided with bearings (31, 41) for mounting a rotor spindle.

Example 2

Fig. 6 to 8 schematically show an energy saving motor according to an embodiment of the present invention. As shown in the figure, the stator used in the energy-saving motor is the modular motor stator in embodiment 1. A rotor 5 is installed in the rotor space of the middle part of the stator 1, and a main shaft 6 passes through the rotor 5 and is fixedly connected with the rotor 5.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a modularization motor stator, its characterized in that includes a shell body and is fixed in a plurality of stator magnetic poles of shell body inner wall, the inside cavity that has the outer disc of a cross section of shell body, the stator magnetic pole is in by a stator core and coiling solenoid on the stator core constitutes, and is a plurality of the stator core is followed the cavity radially is radial setting, and its tail end with shell body lateral wall can dismantle the connection, stator core's head end orientation the central axis of cavity, stator core's installation face with the central axis of cavity is perpendicular.

2. The modular motor stator of claim 1 wherein the stator core head has an arcuate protective portion, the protective portion of the stator core disposed within the cavity enclosing a rotor space having a circular cross-section, the rotor space configured to receive a rotor of a motor.

3. The modular motor stator of claim 1 wherein the stator cores are evenly distributed along the circumference of the inner side wall of the outer housing.

4. A modular motor stator as claimed in claim 3, wherein adjacent stator cores are flanked by and form a closed annular whole.

5. The modular motor stator as claimed in claim 4, wherein the stator core is provided with a tongue-and-groove and a tongue-and-groove at two sides thereof, the tongue-and-groove and the tongue-and-groove are engaged with each other, and the two sides of the stator core and two adjacent stator cores are fixed by the tongue-and-groove and the tongue-and-groove in an inserting manner.

6. The modular motor stator as claimed in claim 1, wherein the stator core has a main body portion for winding the electromagnetic coil, the tail end of the main body portion is an arc-shaped mounting portion, the arc-shaped radian of the mounting portion is matched with the radian of the side wall of the cavity, and the head end of the main body portion is the protection portion.

7. The modular motor stator as claimed in claim 6, wherein the mounting portion is provided with a tongue-and-groove and a tongue-and-groove at both sides thereof, respectively, and the tongue-and-groove are engaged with each other.

8. The modular motor stator as claimed in claim 1, wherein the stator core has a mounting hole therethrough, and a bolt is inserted through the mounting hole to fixedly connect the stator core to the cavity sidewall.

9. The modular motor stator as claimed in claim 1, wherein an end cap is provided at each end of the outer housing, the end cap is fixed at each end and closes the outer housing, and the end cap is further provided with a bearing for mounting a rotor spindle.

10. An energy efficient electric motor comprising a modular motor stator according to any one of claims 1 to 9 and a rotor and a spindle cooperating with the modular motor stator.