CN85205739U

CN85205739U - Alternating-current asynchronous motor with herringbone-slotted rotor

Info

Publication number: CN85205739U
Application number: CN 85205739
Authority: CN
Inventors: 高子伟; 徐常生; 孙宝印
Original assignee: Light Industry Designing & Research Inst Ningxia Hui Autonomous Region (cn
Current assignee: Light Industry Designing & Research Inst Ningxia Hui Autonomous Region (cn
Priority date: 1985-12-30
Filing date: 1985-12-30
Publication date: 1986-10-01

Abstract

The utility model discloses an alternating-current asynchronous motor with a herringbone-slotted rotor, belonging to the motor class. The rotor of the motor is composed of a conducting end ring, and a rotor shaft, and a rotor body, a conducting ring, etc. The rotor body is divided into two parts which are connected by the conducting ring, inclined slots on the two rotor bodies have equal inclinations and opposite inclining directions and oppositely align to the slots of the two rotor bodies of the connecting point of the conducting ring to form a herringbone.

Description

Alternating-current asynchronous motor with herringbone-slotted rotor

A kind of rotor is the AC asynchronous motor of herringbone skewed slot, belongs to electric machinery.

In prior art, the cage rotor of AC asynchronous motor adopts a word skewed slot type shown in Figure 1.The rotor of this grooved, under the effect of electric current, except that producing needed turning moment, also produce axial thrust load.This axial thrust load makes the rotor axial play, causes bump, produces noise.Thereby this motor can not satisfy the requirement of aspects such as environmental protection and household electrical appliance to electric moter noise.Someone advises that rotor adopts dislocation inclination grooved shown in Figure 2.This rotor block is divided into two partly, and is middle continuous by conducting ring (6).The incline direction of two part skewed slots is opposite.With conducting ring junction, its two end points of groove distance that staggers mutually partly.The rotor of this grooved, under the effect of electric current except that the moment that rotates, rotor two partly, the axial force direction of Chan Shenging is opposite separately, but not point-blank, thereby can not repeal by implication effectively, can not satisfy the requirement of reduction noise of motor.Because two part rotor stagger mutually, electric current is bigger to the loss of another side rotor bar transport process through conducting ring (6) by rotor bar on one side in addition.The width of conducting ring also needs bigger.

Rotor described in the utility model provides for addressing the above problem for the AC asynchronous motor of herringbone skewed slot.

Fig. 1～Fig. 2 for prior art rotor schematic diagram wherein: Fig. 1 is a word skewed slot type rotor schematic diagram, and Fig. 2 is dislocation inclination grooved rotor schematic diagram.

Fig. 3 is a herringbone skewed slot type rotor schematic diagram described in the utility model.This rotor is made up of two conducting end-rings (1), armature spindle (2), rotor block (3), conducting ring (4), rotor block parts such as (5).Rotor block is divided into two partly---rotor block (3) and rotor block (5).(3) equal with the skewed slot gradient on (5), incline direction is opposite.With the junction of conducting ring (4), rotor block (3) aligns mutually with the groove of rotor block (5).Form herringbone, make two part rotor reverse symmetry.Because man type chute's reverse symmetry can mutually offset by the axial force that electric current produced, thereby the vibration and the noise of motor have been reduced.Because the groove that two rotor blocks are located at conducting ring (4) aligns mutually, and electric current is little to the consumption of another side rotor bar transport process through conducting ring by one side rotor bar, the width of conducting ring (4) is also very little in addition.

The inventor has carried out following contrast test:

One word skewed slot type rotor and herringbone skewed slot type rotor are contained in respectively on 300 watts of AC asynchronous motor, and motor adopts sliding bearing, and other condition is all identical, and its result is:

The noise of motor of one word skewed slot type rotor is 45～50 decibels.

The noise of motor of herringbone skewed slot type rotor is below 40 decibels.

The inventor replaces a word skewed slot type rotor to be installed on 120 watts the single-phase use in washing machine motor herringbone skewed slot type rotor noise is dropped to 45～50 decibels by 55～60 decibels.

Experiment showed, that rotor described in the utility model is the AC asynchronous motor of herringbone skewed slot, is a kind of quiet motor.Can be widely used in household electrical appliance and other requires low noise product.

Claims

1, a kind of rotor is the AC asynchronous motor of herringbone skewed slot, and the rotor of motor is made up of conducting end-ring [1], armature spindle [2], rotor block [3], conducting ring [4] and rotor block [5].It is characterized in that: the skewed slot gradient of rotor block [3] and rotor block [5] equates that incline direction is opposite, is aligning mutually with the junction [3] of conducting ring [4] and the groove of [5], forms herringbone.