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High-efficiency asynchronous motor capable of changing end ring thickness and reducing starting current

An asynchronous motor, starting current technology, applied in asynchronous induction motors, electrical components, electromechanical devices, etc.

Inactive Publication Date: 2016-02-03
徐东旭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] General squirrel-cage rotor asynchronous motors design the rotor squirrel-cage according to the design standards. Since the maximum torque and starting torque of the motor must be taken into account at the same time, some necessary electromagnetic parameters have to be sacrificed, resulting in a contradiction

Method used

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  • High-efficiency asynchronous motor capable of changing end ring thickness and reducing starting current

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specific Embodiment approach

[0011] Please see figure 1 : When the motor is at rest or starting, due to the action of the compression spring [6], the centrifugal block bracket [1] is pressed to the moving contact reed [7] of the centrifugal switch, the starting capacitor is connected, and the motor enters the starting state; When the rotation speed is increased to 75% of the standard rotation speed (the ratio is different according to the design requirements), due to the centrifugal force, the centrifugal block [5] pushes the centrifugal block bracket [1] to move through the compression spring [6], and breaks away from the moving contact spring. The compression of the piece [7], the separation of the movable contact [8] and the static contact [9] ends the start-up process, and at the same time the additional end ring [3] fixed on the centrifugal block bracket [1] is squeezed and connected with the squirrel cage end ring [2] Closely combined as one, the motor enters the normal operating state.

[0012] B...

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Abstract

The invention relates to a high-efficiency asynchronous motor capable of changing end ring thickness and reducing starting current. A rotor cage is designed according to standards; a cage end ring at one end of a rotor is divided into two parts in a radial direction, wherein one part is maintained connected with cage strips, and the other part, namely "an additional end ring" is fixed to a centrifuge support of a centrifugal switch; when a motor is started, only the thickness-reduced cage end ring of the rotor cage acts; and when the motor reaches a preset rotation speed, the centrifuge support pushes the "additional end ring" for attaching to the thickness-reduced cage end ring, thereby recovering the thickness of the end ring.

Description

technical field [0001] The invention relates to a high-efficiency asynchronous motor which changes the thickness of the end ring and reduces the starting current. Background technique [0002] General squirrel-cage rotor asynchronous motors design the rotor squirrel-cage according to the design standards. Since the maximum torque and starting torque of the motor must be taken into account at the same time, some necessary electromagnetic parameters have to be sacrificed, and there is a contradiction between taking one thing and losing another. Contents of the invention [0003] The purpose of the present invention is to provide a high-efficiency energy-saving asynchronous motor that can automatically adjust the thickness of the end ring of the rotor squirrel cage by using the function of the centrifuge in the centrifugal switch during the start-up and normal operation of the motor. [0004] The technical solution for realizing the present invention is: design the rotor squi...

Claims

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Application Information

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IPC IPC(8): H02K1/22H02K17/16
Inventor 徐东旭徐东升时海建张润禄张秀川田利飞牛华强徐东山董崇民
Owner 徐东旭
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