BG65144B1 - Electric motor - Google Patents

Abstract

The electric motor is asynchronous and has greater functional potentials. It consists of a stator (2) with windings (3) in a housing (1), in which rotor (4) with cage winding (5) of axial conductors (6) with electric conducting rings at their ends. Stator (2) is made of, fitted around housing (1), radially orientated plates (8) with windings (3) and opposite poles (10, 11) in the aperture between which winding (5) of rotor (4) is found, having non-ferromagnetic material between its axial conductors (6). The stator plates (8) have at least one radial sheet (13) and casing (1) made of non-ferromagnetic material.

Description

The invention relates to an electric motor and in particular an asynchronous electric motor.

BACKGROUND OF THE INVENTION:

An asynchronous electric motor is known, consisting of a stator with a three-phase winding and a metal housing, in which a rotor with a cafe winding and a ferromagnetic core is mounted.

With this solution, the rotor and the stator have a large mass, with only one rotor, which limits the functionality of the motor.

A known electric motor consists of a stator with a coil and a ferromagnetic housing, in which a rotor with a coiled coil and a central opening with a second stator in it with coils is mounted. The rotor has an external ferromagnetic surface / 2 /.

With this solution, the stator housing has a large diameter and mass, with the rotor being only one, which limits the functionality of the motor.

It is an object of the invention to provide an engine with increased functionality at reduced mass.

SUMMARY OF THE INVENTION

The problem is solved by means of an electric motor, comprising a stator with a coil housed in a housing, in which a rotor with a coiled coil of axial conductors with rings at their ends is mounted. According to the invention, the stator consists of radially directed plates with coils and opposite poles, in the opening between which is located the cavity coil of the rotor, with non-ferromagnetic material between the axial conductors, wherein the housing is non-ferromagnetic material and the stator plates have at least one radial letter.

There are longitudinal ferromagnetic bands between the axial conductors of the stator coil coil.

The axial conductors of the rotor are sinusoidal along the cage coil.

Between the leaves of the diametrically located stator plates there are leaves with a pair of poles spanning the rotor and connected along the longitudinal ferromagnetic strips of the rotor to their ends by means of ferromagnetic washers located adjacent to the rings of the coiled coil.

The axial conductors are connected to one ring by winding around a portion of the ferromagnetic bands.

Between the poles of the stator plates there is a second rotor with a cage winding, concentric to the first rotor, wherein the axial conductors of the cage windings are helical and have a different direction of inclination.

The pole plates are located in the radial grooves of the housing, in which is mounted a disk with spiral coils, engaged with the corresponding teeth of the pole plates, with a locking mechanism of a known type for the disk.

An advantage of the motor according to the invention is the increased functionality at reduced mass.

Description of the attached figures

Figure 1 is a longitudinal sectional view of the motor;

Figure 2 is a section through AA of Figure 1;

Figure 2a is a cross-sectional view of the rotor in another embodiment;

Figure 3 is a section through AA of Figure 1 when executing the radial plates of a radial set of leaves;

Figure 4 is a side view of radial pole plates coiled at one pole;

Figure 4a is a side view of a pole plate with windings at both poles;

Figure 5 is a cross-sectional view of the pole plates in another embodiment;

Figure 5a is a sectional view along the CC of Figure 5;

Figure 5b is a sectional view along BB of Figure 5;

Figure 6 is a cross-sectional view of a rotor in another embodiment;

Figure 6a is a cross-sectional view of a rotor with a second layer of rotor axial conductors;

Figure 7 is a longitudinal section view of a rotor with a ferromagnetic grid;

Figure 7a is a view in E of Figure 7;

Figure 7b is an E-view of FIG. 7 in the case of windings of the ferromagnetic strips of the rotor;

Figure 7c is a view of E of FIG. 7 in another embodiment;

Figure 8 is a longitudinal section view of an electric motor with two rotors;

Figure 9 is a view of the rotor F of Figure 8;

FIG. 10 is a view in F of FIG. 8 on the second rotor;

Figure 11 is a longitudinal sectional view of a variable diameter stator.

Embodiments of the invention

The motor consists of a stator 2 housed in a housing 1 with windings 3 in which a rotor 4 is mounted with a cafe winding 5 of axial conductors 6 with rings 7 at their ends. The stator 2 is composed of a circumferential housing 1 housing radially directed plates 8 with windings 3 and opposite poles 10, 11, in the opening between which is the cage winding 5 of the rotor 4 with non-ferromagnetic material between the axial conductors 6, wherein the housing 1 is of non-ferromagnetic material and the stator plates 8 have at least one sheet 13. In one embodiment (Fig. 1), the stator windings 2 are located in the radial sections 27 of the stator 2 pole plates 8, in another embodiment (Fig. 4). winding of the outer pole 10 of the stator, and at Reto embodiment (Fig. 4a) - with the coil of the inner pole 11 of the stator 2.

Between the axial conductors 6 of the cage coil 5 of the rotor 4 (Fig. 2a) there are longitudinal ferromagnetic strips 12. The strips 12 are connected to the cage coil 5 by non-ferromagnetic material.

The axial conductors 6 of the rotor 4 (Fig. 6) are arranged sinusoidally along the cage winding 5. In FIG. 6a shows the cage coil with dual sinusoidal axial conductors.

In another embodiment shown in Figures 5 and 5a, between the sheets 13 of the diametrically located stator plates 8 there are sheets 14 with a pair of poles 15, 16 spanning the rotor 4.

In another embodiment shown in Figure 7, 7a, the longitudinal ferromagnetic tapes 12 of the rotor 4 are fixed at their ends by the ferromagnetic washers 17 located adjacent to the rings 7 of the cafe coil 5.

In another embodiment shown in Figure 7b, the axial conductors 6 of the cage coil 5 are connected to one ring 7 by windings 18 arranged around a portion of the ferromagnetic strips 12. In another embodiment, FIG. 7c, after the winding 18, a second winding 19 is connected to the ferromagnetic band 12, connected to a second axial conductor 20 and the other ring 7 of the cage winding 5.

In another embodiment shown in Figures 8, 9, 10, a second rotor 21 is arranged between the poles of the stator plates 8 with a cage winding 22 concentric to the first rotor 4, the axial conductors 6 and 23 of the cage windings 5,22 being helical and have a different slope direction.

In another exemplary embodiment shown in Figure 11, the stator plates 8 of the stator 2 are arranged in radial grooves 9 of the housing 1, in which a disk 24 is provided with helical turns (teeth) 25 engaged with corresponding teeth 26 of the pole plates 8, providing a locking disk 24 mechanism of known type. The stator 2 in this case is equipped with a set of rotors 4 with different diameters, and optionally with a variable diameter rotor 4 having the stator mechanism with a disk 24, clamped with teeth 26 of radial sliders in the rotor 4 having several axial conductors 6 connected to those of a neighboring radial slider by means of rings 7 with an elastic connection between their segments.

Use of the invention

When intersecting the rotating stator magnetic field of the axial conductors 6 of the coil coil 5 of the rotor 4, current flows into these conductors 6. By reacting the current in the coil coil 5 with the rotating magnetic field of the stator 2, a torque is created rotating the rotor 4. The ferromagnetic flux is closed individually for each stator plate 8 through the rotor wall 4, shortening the length of the ferromagnetic circuit and reducing the related circuits. losses, which also reduce the stator (plate) structure of the stator 2. With the windings 3 located in the radial section of the pole plates 8, the outer diameter of the stator 2 is significantly reduced, respectively, its mass being reduced. than those used for producing the housing 1 lightweight non-ferromagnetic materials. The design of the rotor 4 has a minimum mass and moment of inertia (Fig. 2). The rotor torque 4 increases with the use of windings and poles of the plates 8, with sinusoidal axial conductors 6, (Figs. 6, 6a), and with windings 18,19 of the ferromagnetic strips 12.

In the stator plates 8, a second ferromagnetic flux is closed with the two types of sheets - 13,14 (Figs. 5a, 5b) and the rotor 4 with the ferromagnetic strips 12 - (Fig. 7).

The use of two concentrically located rotor 4 and 21 increases the functionality of the motor. They are also increased by radially moving the pole plates 8, allowing the stator 2 to operate with different diameter rotor 4 and, alternatively, the variable diameter rotor 4, similar to the stator 2 construction. The windings 18 (Fig. 7b), through the current flowing in them, create a magnetic flux in the ferromagnetic bands 12.

Claims

Claims (8)

A motor comprising a stator with a winding in which is housed a rotor with a coiled coil of axial conductors with rings at their ends, characterized in that the stator (2) is made up of radially circumscribed housing (1) directional plates (8) with windings (3) with opposite poles (10 and 11), in the opening between which there is a cage winding (5) with non-ferromagnetic material between the axial conductors (6) and the stator plates (8) have at least one radial sheet (13), the housing (1) being non-ferromagnetic material. Electric motor according to claim 1, characterized in that there are longitudinal ferromagnetic tapes (12) fixedly connected to the rotor (4) between the axial conductors (6) of the coil coil (5). Electric motor according to claims 1 and 2, characterized in that the axial conductors (6) of the rotor (4) are sinusoidally arranged along the circumferential length of the coiled coil (5). Electric motor according to claims 1 to 3, characterized in that between the leaves (13) of the diametrically located stator plates (8) there are leaves (14) with one pair of poles (15, 16) enclosing the rotor (4). Electric motor according to claims 1 to 3, characterized in that the longitudinal ferromagnetic strips (12) of the rotor (4) are fixedly connected at their ends by ferromagnetic washers (17) located to the rings (7) of the coiled coil (7). 5). Electric motor according to claims 1 to 5, characterized in that the axial conductors (6) of the cage coil (5) are connected to one ring (7) by windings (18) around part of the ferromagnetic belts (12). Electric motor according to claims 1 to 6, characterized in that a second rotor (21) is arranged between the poles (10 and 11) of the stator plates (8) and is a cafe coil (22) concentric to the first rotor (4). , where the axial conductors (6), (23) of the respective coil coils (5), (22) are helical and have different tilting directions. Electric motor according to claims 1 to 6, characterized in that the stator (2) consists of stator pole plates (8) located in radial grooves (9) of the housing (1) in which the disc (24) is mounted. ) with helical teeth (25) engaged with the corresponding teeth (26) of the stator pole plates (8). Attachment: 11 figures