Iron core of inductive motor

Abstract

The induction motor iron core includes stator core and rotor core. The stator core has several inward slots and teeth, and the rotor core mounted inside the stator core has several outer radial slots. The present invention features the stator core with tooth tops, which are made of material with magnetic flux density higher than that of stator body, formed into integral with the stator body and separated from the rotor core by certain distance. Thus, the induction motor iron core can reduce saturation of magnetic flux around the interval and raise product performance, and may have less laminas, low cost and small size.

Description

technical field [0001] The invention relates to an iron core of an induction motor. Background technique [0002] Generally speaking, the structure of the induction motor is relatively simple, the firmness is good, and the price is low, so it has been widely used. The stator and rotor of this motor have their own independent coils, and the motor is driven by the electromagnetic induction between them. [0003] Such as figure 1 As shown, the rotor core (121) is installed inside the stator core (110) of the induction motor, and a certain air gap (Wi) needs to be left between them. [0004] The center of the above-mentioned rotor iron core (121) forms a through shaft hole (122) for connecting the rotating shaft (not shown in the figure), and its outer periphery forms several slots (slot) (123). (123) are connected with the outside and arranged radially. [0005] The above-mentioned stator core (110) is made by insulating and superimposing steel plates, and a through accommo...

AI Technical Summary

Problems solved by technology

[0008] However, for the iron core of the induction motor with the above-mentioned structure, since each of the above-mentioned iron cores (110, 121) is made of a single material with low magnetic flux density, the rotor iron core (121) and the stator Magnetic flux saturation tends to occur around the gap of the iron core (110)

In order to prevent this phenomenon, it is necessary to reduce the number of layers of the iron core, but this will greatly reduce the efficiency of the motor

[0009] In addition, in order to prevent the above-mentioned magnetic flux saturation around the gap, the prior art also adopts the method of making the above-mentioned iron cores (110, 121) with materials with higher magnetic flux density, but this will cause the problem of increased cost

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