CN106329861A - Asynchronous motor capable of reducing end ring thickness and increasing starting performance - Google Patents

Abstract

The invention relates to an asynchronous motor capable of reducing end ring thickness and increasing starting performance. The asynchronous motor is characterized in that the thickness of an end ring at one end of a rotor mouse cage is reduced, a mouse cage rotor with two unsymmetrical end rings is formed, air vents are formed in the inner side of a rotor iron core, and a fan is mounted at the end with the reduced end ring thickness. Due to the fact that the thickness of the mouse cage end ring reduced, the overall internal resistance of the mouse cage is increased, the induction currents of the rotor are reduced, the starting currents of the motor are reduced, the voltage in a starting process is increased indirectly, and the motor can be fast started under a power supply condition not so good.

Description

Reduce end ring thickness and improve the asynchronous motor of startability

Technical field

The present invention relates to a kind of method reducing rotor one end end ring thickness and improve the asynchronous motor of startability.

Background technology

General Cage Rotor Asynchronous Motor, is all the mouse cage according to design standard design rotor, owing to hold concurrently simultaneously , there is the contradiction attended to one thing and lose sight of another in Gu motor torque capacity and detent torque, and the electromagnetic parameter sacrificing some necessity of having to, Especially in the remote countryside that some power grid qualities are the highest, the problem often resulting in motor start-up difficulty.

Summary of the invention

The purpose of the present invention, be to provide a kind of applicable remote countryside use, can be in the case of power supply quality be the highest The motor quickly started.

Realization the technical scheme is that and designs rotor cage, the end ring thickness of reduction rotor one end by standard, is formed The two asymmetric cage rotors of end ring；Machined air vent in the inner side of rotor core and install additional in one end of reduction end ring thickness One fan, the air vent within rotor core and fan collectively form the axial flow blower that motor includes.

After such change, because starting process of motor reduces the end ring thickness of rotor one end, mouse cage is overall Internal resistance strengthens, and reduces the faradic current of rotor, it also reduces the starting current of motor, thus indirectly increase startup During the voltage of motor, it is ensured that quick actuating motor in the case of condition of power supply is the highest.

Accompanying drawing illustrates:

Fig. 1 is the schematic diagram reducing the asynchronous motor that end ring thickness improves startability.

Fig. 2 is the side view of Fig. 1.

Mark in each figure is as follows:

1 is motor reel；2 is balance columns；3 is the cage ring of normal size；4 is rotor core；The Mus that 5 is reduction thickness Cage end ring；6 is fan；7 is the ventilating hole channel in rotor core.

Detailed description of the invention:

By designing standard normally, according to the difference of power of motor size, the end ring thickness of reduction rotor one end is to arm's length standard 60% to 80%, this end ring is higher because local electrical resistance increases the local temperature rise that causes, relies on the axial flow blower cooling included.

Claims (1)

1. the asynchronous motor reducing end ring thickness raising startability, it is characterised in that: reduction rotor one end mouse cage end Ring thickness, forms the two asymmetric cage rotors of end ring；Air vent is machined and at reduction end ring thickness inside rotor core One end install a fan additional.