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Single-phase motor starting and running device with pure alternating current capacitor

A technology for operating devices and capacitors, which is applied in the field of operating devices and single-phase motor starting, which can solve problems such as limited use, frequent motor failures, and large volume, and achieve the effects of improved pressure bearing capacity, improved product quality, and reduced volume

Inactive Publication Date: 2014-07-23
赵小勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the starting capacitor used is an aluminum electrolytic capacitor, which is bulky and is a DC capacitor. Limit, this component is very easy to damage in actual use, making the motor failure frequently

Method used

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  • Single-phase motor starting and running device with pure alternating current capacitor
  • Single-phase motor starting and running device with pure alternating current capacitor
  • Single-phase motor starting and running device with pure alternating current capacitor

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Such as figure 1 As shown, the present invention has an AC capacitor using a film capacitor (or polypropylene capacitor) and a double-contact centrifugal switch 5. The pure AC capacitor is composed of three capacitive elements C1, C2 and C3 in series, so The first group of contacts of the double-contact centrifugal switch 5 has a moving contact 503, a first static contact 501 and a second static contact 502, and the second group of contacts has a moving contact 503', a first static contact 501' and a second Static contact 502`, the terminals 1 and 4 of the series circuit composed of the three capacitive elements C1, C2 and C3 are respectively connected to the two first static contacts 501 and 501` of the double-contact centrifugal switch, and the two connected The node 3 of the capacitive elements C2 and C3, the node 2 of the capacitive elements C1 and C2 are respectively connected to the two moving contacts 503 and 503` of the double-contact centrifugal switch, and the...

Embodiment 2

[0019] Such as figure 2 As shown, the present invention is composed of an AC capacitor using a film capacitor (or polypropylene capacitor) and a double-contact centrifugal switch. The pure AC capacitor is composed of three capacitive elements C1, C2 and C3 connected in series in sequence, and the The first group of contacts of the double-contact centrifugal switch has a moving contact 503 and a first static contact 501, the second group of contacts has a moving contact 503`, a first static contact 501` and a second static contact 502`, the three Terminals 1 and 4 of a series circuit composed of capacitive elements C1, C2 and C3 are respectively connected to the two first static contacts 501 and 501` of the double-contact centrifugal switch, and the nodes 3 of the capacitive elements C2 and C3 connected in pairs , Node 2 of the capacitive elements C1 and C2 are respectively connected to two moving contacts 503 and 503` of the double-contact centrifugal switch, the moving conta...

Embodiment 3

[0022] Such as image 3 As shown, the present invention is composed of an AC capacitor using a film capacitor (or polypropylene capacitor) and a double-contact centrifugal switch. The pure AC capacitor is composed of three capacitive elements C1, C2 and C3 connected in series in sequence, and the The first group of contacts of the double-contact centrifugal switch has a moving contact 503 and a first static contact 501, the second group of contacts has a moving contact 503`, a first static contact 501` and a second static contact 502`, the three Terminals 1 and 4 of the series circuit composed of three capacitive elements C1, C2 and C3 are respectively connected with the first static contact point 501 of the first set of contacts and the moving contact point 503′ of the second set of contacts, and the capacitive element C2 connected in pairs and the node 3 of C3 and the node 2 of the capacitive elements C1 and C2 are respectively connected with the moving contact 503 of the fi...

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Abstract

Provided is a single-phase motor starting and running device with a pure alternating current capacitor. The single-phase motor starting and running device can meet the starting and running requirements of a single-phase motor, is not subject to use limitation, has no fault and is simple in structure and small in size, and the capacitor can run stably for a long term. The single-phase motor starting and running device is formed by the pure alternating current capacitor and a double contact centrifugal switch. The pure alternating current capacitor is formed by three capacity elements which are sequentially in series connection; and through the double contact centrifugal switch, parallel connection of the three capacity elements during starting is achieved, one capacity element quits running after the starting, and other two capacity elements form a series connection circuit.

Description

technical field [0001] The invention relates to a single-phase motor starting and running device using a pure AC capacitor. Background technique [0002] The existing capacitors for starting and running of single-phase motors are usually installed outside the body of the motor respectively; the capacitors for starting are lead electrolytic capacitors, and the capacitors for running are film capacitors. When the motor starts to reach the specified number of revolutions, use the centrifugal switch (or other automatic control devices, such as time relays, starting relays, etc.) to disconnect the starting capacitor from the circuit to achieve operation. [0003] At present, the starting capacitor used is an aluminum electrolytic capacitor, which is large in size and is a DC capacitor itself. Limit, this component is very easy to damage in actual use, which makes the motor malfunction frequently. Contents of the invention [0004] The present invention aims to solve the above...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/44
Inventor 赵小勇
Owner 赵小勇
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