KR20030093800A - configuration of the stator and rotor - Google Patents

Abstract

PURPOSE: A structure of a rotor and a stator of a squirrel-cage induction motor is provided to simplify a structure of an inductive motor and reduce a manufacturing cost of the inductive motor by changing a structure of the rotor and a structure of the stator. CONSTITUTION: A structure of a rotor and a stator of a squirrel-cage induction motor includes a bobbin and a coil(1), a short circuit copper(2), a rotor(3), a shaft(4), and a laminated steel core(5). The stator is formed with a wound coil and the short circuit copper(2). The rotor(3) is formed by laminating a plurality of thin silicon steel plates having slots and inserting an aluminium conductor or a zinc conductor. Both ends of the aluminium conductor or the zinc conductor are formed with thin circular plate.

Description

Structure of rotor and stator of squirrel cage induction motor {configuration of the stator and rotor}

The present invention relates to a rotor and stator structure of a squirrel cage induction motor driven by an AC power source, and in particular, by changing the structure of the rotor and the stator to make the induction motor light and simple.

Conventional squirrel cage induction motors are manufactured by inserting coils into the respective slots of the stator by winding the coils during stator fabrication, so as to facilitate the operation when the coil is inserted.

By increasing the coil end, the coil demand increases, which increases the material cost and reduces productivity.

there is a problem.

The rotor also performs a separate diecasting operation to insert the conductor into the slot.

As a result, the weight is heavy, the workability was poor.

Therefore, the conventional squirrel cage induction motor has a disadvantage in that the weight is heavy, the workability is low, the material cost is high, and the structure is complicated compared to the capacity.

By improving the problems of the squirrel cage induction motor, a light weight, a simple structure, and an easy manufacturing process have emerged as a task to be taken first.

The present invention is intended to make the induction motor light, simple, and reduce the material cost by configuring the stator and the rotor structure of the squirrel cage induction motor to be guided to the rotor. .

1: Stator of the present invention squirrel cage induction motor

2: Rotor of the present invention squirrel cage induction motor

3: Assembly drawing of the stator and the rotor of the present invention squirrel cage induction motor

(Explanation of symbols for the main parts of the drawing)

⑴: bobbin and coil ⑵: short circuit copper

⑶: rotor ⑷: shaft

⑸: laminated steel core 적: electric steel sheet

Bob: bobbin ⑻: coil

The squirrel cage induction motor of the present invention is composed of a stator and a rotor, and induces a current in the rotor with a rotor field made by applying an alternating voltage to the stator coil (Fleming's right-hand law), so that the electromotive force is maintained, so that the eddy current (vortex) The flow of the rotor by the action of the current and the magnetic flux is in common with the conventional squirrel cage induction motor.

However, the squirrel cage induction motor stator of the present invention, as shown in Fig. 1 and Fig. 3, forms a “c” shape, one of which inserts a wound coil, and the other of

It is distinguished from the prior art in that it has a technical configuration characterized in that the short circuit copper is inserted.

The rotor is also laminated with a thin sheet of silicon steel with slots to

Pass the conductor of aluminum or zinc through the slot to

Instead of shorting both ends with an end ring, the thickness is

The thin disc is distinguished from the prior art.

Therefore, the cage induction motor of the present invention has the advantages that the stator (Fig. 1) and the rotor (Fig. 2) are simple in structure, light in weight, and simple in manufacturing method.

To have.

Hereinafter, the technical contents of the present invention through specific embodiments shown in the exemplary drawings.

It will be described in detail as follows.

In order to reduce eddy current loss, the stator core (Fig. 1) should be laminated with iron plates made of silicon steel sheets with high resistivity (5) to reduce the loss of the core itself.

On one axis of the stator, coil (1) is wound on bobbin as shown in Figure 3, and on the other axis, machined short circuit copper is inserted.

It is made up of two pairs.

The rotor machined the disc (Fig. 2) with the shaft in the center and the motor

Supported by bearings in the cover, spaced slightly from the stator

Configure it to be located.

The stator and the rotor in this way have the short circuit copper of the stator

The voltage is induced from the coil wound by the transformer principle, and the current flows, and the rotor 3 is rotated by creating a magnetic field by the magnetic force and the magnetic force of the coil.

As sampled above, the present invention

1.There is no core lamination and slot of rotor, and it fits the conductor into the slot.

It is simple to use because it is a thin disk type that does not require additional die casting.

Light weight

2. The stator shape is simple and the manufacturing method is simple.

3. The winding of the stator coil is simple.

4. Reduce weight by about 40% compared with conventional motor of same capacity

Can be.

5. Compared with the conventional motor, the workability is good and the material cost can be lowered.

Claims (1)

1. The stator has a structure of “C” shape as shown in Fig. 1), and on one axis Mount the coil wound (Nos. 7 and 8 in Figure 1), and on the other axis A structure for mounting short circuit copper (No. 2 in Fig. 1). 2. The rotor is a thin disk without lamination and slots and no conductor insertion. Figure 2 shows the structure.