JPH01103147A - Electric rotary machine - Google Patents

Abstract

PURPOSE:To enhance the output per the same weight by mounting slots on the same diameter of the outer and internal perimeters of an armature core and placing two pairs of stators corresponding to two pairs of in and out armatures formed by winding an armature winding between them. CONSTITUTION:A plurality of slots 3 & 4 are mounted on the same diameter along by the outer and internal perimeters of a laminated core forming an armature 1. An armature winding 5 is wound up on a partition part between opposed slots 3 & 4, and a wire 11 is successively connected to the winding 5 of the same phase of slots (third one in case of three phase) 3' & 4'. For the slot 3 on the outer perimeter, a field magnet 7 is mounted on the outer frame 15 through a gap 6. For the slot 4 on the internal perimeter, a field magnet 9 is mounted on the internal frame 16. The outer frame 15 and the internal frame 16 are linked together by a rigid material 10 serving as a side cover. The armature 1 held by a bearing 18 so as to swivel. Accordingly, two units of rotary power machines are formed on a short shaft and the output per the same weight is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to so-called rotating electric machines such as electric motors or generators having a structure whose diameter is significantly larger than its width in the axial direction.
More specifically, the present invention relates to a motor or a generator having a two-layer structure in which the field and the slots of the armature core are arranged concentrically and form a pair of inside and outside.

Prior art The armature of a conventional electric motor or generator has slots formed only on either the outer or inner circumference of a cylindrical or cylindrical armature core, and the teeth between these slots are The armature winding was wound around the armature.

By the way, the armature winding of a rotating electrical machine consists of two parts: ■ A part that is incorporated inside the slot and is effectively used to generate torque in an electric motor and an electromotive force in a generator; It consists of a part that only functions to connect between and conduct current.

Problems to be Solved by the Invention When a conventional electric motor or generator uses an armature whose diameter is significantly larger than its width in the axial direction, slots in the armature winding described in Compared to the length of the internally incorporated portion, the length of the portion that connects the slots described in item ① above is large, which is a major factor in reducing efficiency.

To explain this in detail based on, for example, FIG. 1, like a conventional electric motor or generator, the slot 3 on the outer peripheral surface side...
If a motor or generator is configured only by the combination of the armature winding wound in the southern part of the field 7 and the field 7, and the number of phases is three, the armature winding is connected to the slot 3 and the slot 3 of the same phase. ', and the length of the line 11 connecting the slots is the length of the section a-c, which is significantly longer than the length of the section a-b. is considered a problem as a cause of reduced efficiency.

Means for Solving the Problems As a means for solving the problems of the above-mentioned prior art, a rotating electric machine according to the present invention, as shown in a preferred embodiment in FIGS. 1 and 2 of the drawings, In a rotating electric machine such as a motor or a generator consisting of a magnet and a field, a) the armature core 2 forming the cylindrical armature 1 has the following components:
A pair of inner and outer slots 3 and 4 are provided on both the outer circumferential surface side and the inner circumferential surface side in a point-symmetrical arrangement with respect to the center of the armature and at positions on a common radius line. One armature winding 5 is wound around the partition part 12 between the pair of inner and outer slots 3 and 4 located on the radial line, and each armature winding 5. The armature L was constructed using the following.

On the other hand, a small gap 6 was formed outside the outer peripheral surface of the armature 1, and a field 7 was formed.

c) Furthermore, a field 9 is formed inside the inner circumferential surface of the same armature 1 with a small gap 8 therebetween.

Effect According to the above configuration, the combination of the armature winding 5 and the field 7 in the slots 3 on the outer circumference side and the slots 4 on the inner circumference side
Each of the combinations of armature winding 5 and field 9 of...
In other words, each motor constitutes a total of two electric motors or generators, and a large output can be obtained.

Moreover, the length of the winding wound around the so-called bulkhead portion 12 between the slots 3 and 4 located on the common radius line of the armature winding 5 is, for example, the length of the section a-b indicated in FIG. Since it is extremely short, efficiency is greatly improved.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail as shown in FIGS. 1 and 2 of the drawings.

Figures 1 and 2 show a three-phase, six-pole electric motor (or generator, hereinafter the same) having 18 slots. There are 18 slots 3... and 4... on both the outer circumferential surface side and the inner circumferential surface side of the armature core 2 (see Fig. 2), which are point symmetrical with respect to the center of the armature. In this arrangement, the slots 3.4 on the outer circumferential side and the inner circumferential side are provided back-to-back at positions on a common radial line with the bulkhead portion 12 of the armature core in between.

Inner and outer slots 3 and 4 are provided back to back on the same radius line across the partition wall portion 12 of the armature core 2.
... form a pair of relationships on a common radius line.

A total of 18 armature windings 5 are wound, one each on the partition wall portion 12 between the pair of inner and outer slots 3.4. The armature windings 5 are arranged in the same phase in every second order in the circumferential direction of the armature core 2, and are connected by lead wires 11, respectively. 6 connected in this way
A total of three phases of armature windings are formed, with each armature winding 5 being the l-phase.

On the other hand, an outer field 7 is formed concentrically with the armature 1 at an outer position on the outer peripheral surface of the cylindrical armature 1 with a small gap 6 sufficient to allow rotational movement. Also,
Similarly, on the inside of the inner peripheral surface of the same armature l, an inner field rji9 is formed with a small gap 8 in a concentric arrangement with the armature l. The outer field 7 is fixed to the inner peripheral surface of a cylindrical outer frame 15, and the inner field 9 is fixed to the outer peripheral surface of a cylindrical inner frame 16. Furthermore, the polarities of these two inner and outer fields 7 and 9 are arranged symmetrically with respect to the center of the armature l, and are divided into six equal parts at the position of a common radius line.

Also, the polarity directions of these two inner and outer fields Bi7 and 9 are as follows:
There are two types of configurations: a case in which the direction is the same toward the armature l, and a case in which the direction is the same in the opposite direction.

If the polarities are configured in the same direction, the two inner and outer fields 7 and 9
rotates in the same direction with respect to armature l, but if the polarity is configured in opposite directions, the two internal and external fields 7 and 9 rotate in the same direction as armature l.
It rotates in the opposite direction.

As shown in FIG. 2, the two inner and outer fields 7 and 9 are connected to the inner and outer frames 15 and 16 by an undeformable rigid member lO that also serves as a cover plate that closes one side of the motor.
or are integrally connected. Two realms inside and outside Fj17 and 9
If the direction of polarity of is the same toward the armature l, and the two fields 7 and 9 are not deformed, the rigid member lO
If this electric motor a (or generator)
The torque generated to the outside is the sum of the torque generated between the outer field 7 and the armature l, and the torque generated between the inner field 9 and the armature l.

This electric motor has a rotating shaft 13 connected to the armature core 2 protruding from the side opposite to the above-mentioned rigid member 10, and is configured to output generated rotational power to the outside through this rotating shaft 13. . The rotating shaft 13 is rotatably supported by a bracket 17 fixed to the outer frame 15 via a bearing 18.

The effects of the present invention are as described in detail in conjunction with the embodiments. Compared to this, the ratio of the length of the portion 11 that connects the slots can be reduced, so a significant improvement in efficiency can be expected for a motor or generator of the same weight.

In addition, it is the same as constructing a total of two motors or generators with a two-layer structure inside and outside the armature L, so the output torque that can be extracted as an electric motor or the output power that can be extracted as a generator per the same weight can be calculated. It is much larger than the conventional one.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a rotating electric machine according to the present invention taken along the line II in FIG. 2 and partially omitted; FIG. FIG.

Claims (1)

[Scope of Claims] [1] In a rotating electric machine such as a motor or a generator that includes an armature and a field, a) an armature core (2) forming a cylindrical armature (1);
has inner and outer slots (3) and (4) arranged symmetrically with respect to the center of the armature on both the outer and inner circumferential surfaces thereof and located on a common radius line. an armature (1) comprising an armature winding (5) wound around a partition wall (12) between a pair of inner and outer slots (3) and (4) located on a common radius; b) A small gap (6) on the outside of the outer peripheral surface of the armature (1)
) and the same armature (1)
) and a field (9) formed with a small gap (8) inside the inner peripheral surface of the rotary electric machine. [2] The internal and external fields (7
) (9) is a structure divided into point-symmetrical arrangements with the center of the armature (1) as a reference, and the field (
7) and the field (9) on the inner circumferential side are divided at the position of a common radius line, and the polarity of the field (7) on the outer circumferential side and the field (9) on the inner circumferential side is determined by the electric motor. The field magnet (7) on the outer peripheral surface side and the field magnet (9) on the circumferential surface side are connected by a rigid member (10) that does not deform. A rotating electrical machine characterized by: