CN105071707A - Centrifugal switch and brushless liquid-resistance motor starter comprising same - Google Patents
Centrifugal switch and brushless liquid-resistance motor starter comprising same Download PDFInfo
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- CN105071707A CN105071707A CN201510519182.8A CN201510519182A CN105071707A CN 105071707 A CN105071707 A CN 105071707A CN 201510519182 A CN201510519182 A CN 201510519182A CN 105071707 A CN105071707 A CN 105071707A
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- electrode
- linkage block
- guide rod
- centrifugal switch
- moving electrode
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Abstract
The invention provides a centrifugal switch and a brushless liquid-resistance motor starter comprising the same. The brushless liquid-resistance motor starter centrifugal switch comprises a static electrode and a moving electrode, wherein the static electrode is fixedly arranged on a motor starter liquid storage box shell body; the moving electrode is arranged on an elastic mechanism; the moving electrode is attached to the static electrode under the action of a centrifugal force when a motor is started; the elastic mechanism comprises a guide rod, a linkage block sleeving the guide rod and a pressing spring through which the moving electrode and the static electrode are separated from each other for resetting; and the distance from a center line of an annular groove in the guide rod to a jackscrew arranged in the radial direction of the guide rod, the distance from the spring to a center line of a steel ball and the distance between the moving electrode and the static electrode when the motor is not started are equal. According to the centrifugal switch, electric arc cannot be generated since a gap is not formed between moving electrode and the static electrode when the moving electrode is completely attached to the static electrode, thereby reducing damage to the electrodes.
Description
Technical field:
The present invention relates to a kind of brushless liquid-resistance motor starter, particularly relate to a kind of brushless liquid-resistance motor starter centrifugal switch.
Background technology:
Vacuum switch is in the prior art primarily of moving electrode, stationary electrode, conductive push rod and compress spring composition, and moving electrode and stationary electrode are located at vacuum extinction indoor, and moving electrode and conductive push rod link, and conductive push rod is fixed with centrifugal-block.In use, vacuum switch is radially fixed in residing chamber, in motor starting process, first by primer fluid electrical conductive communication electric motor loop, along with the continuous increase of motor speed, centrifugal-block in vacuum switch and moving electrode are under the influence of centrifugal force, centrifugal-block compression compresses spring and promotes moving electrode and is close to stationary electrode gradually, after moving electrode and stationary electrode reach certain distance, between moving electrode and stationary electrode, electric discharge phenomena occurs, produce electric arc, damage is produced to electrode.
In addition, dynamic and static electrode in conjunction with time speed general lower, cause arc carryover time of producing between sound electrode longer; The area of this external supply power voltage instability, due to the fluctuation of voltage, low during height during motor speed, cause between sound electrode, occurring that gap produces electric arc.The electric arc that the former produces is general less to the damage of electrode, and the latter causes the electric arc between moving electrode to occur repeatedly at short notice due to spread of voltage, and the injury of electric arc to electrode of this frequent generation is larger.Thus solve because the injury problem of spread of voltage to electrode is more outstanding.
Summary of the invention:
Technical problem to be solved by this invention is, a kind of centrifugal switch and the brushless liquid-resistance motor starter with this centrifugal switch is provided for the deficiencies in the prior art, when supply power voltage declines, there is not gap between sound electrode so that do not produce the damage of electric arc to electrode.
Technical problem to be solved by this invention is achieved by the following technical solution: a kind of brushless liquid-resistance motor starter centrifugal switch, comprise: be fixedly installed on the stationary electrode (7 on motor starter liquid reserve tank housing (1), 7 ') and the moving electrode (8 be arranged on elastic body, 8 '), after electric motor starting, moving electrode (8 under centrifugal action, 8 ') with stationary electrode (7, 7 ') fit, described elastic body comprises: guide rod (12, 12 '), be set in described guide rod (12, 12 ') linkage block (15 on, 15 '), and make linkage block after completing power start, make moving electrode (8, 8 ') and stationary electrode (7, 7 ') what be separated reset compresses spring (14, 14 '), it is characterized in that: cannelure (16, 16 ') center line with along described guide rod (12, 12 ') the radial jackscrew (9 arranged, 9 '), spring (10, 10 ') and steel ball (11, 11 ') moving electrode (8 when the distance x between center line and motor do not start, 8 ') with stationary electrode (7, 7 ') the distance y between is equal.Described guide rod (12) is fixedly connected with liquid reserve tank housing (1) by insulation system (6), described linkage block (15) and guide rod (12) sliding fit, and described moving electrode (8) is arranged in described linkage block (15); Described linkage block (15) offers radial direction through hole, and described jackscrew (9), spring (10) and steel ball (11) are arranged in this radial direction through hole.
The described spring (14) that compresses is arranged between insulation system (6) and linkage block (15) madial wall bottom, and mutually supports with insulation system (6) and linkage block (15) madial wall bottom.Described centrifugal switch also comprises fixed component (19), described fixed component (19) is fixedly connected with described liquid reserve tank housing (1) by insulation column (6 '), one end of described guide rod (12 ') is arranged in this fixed component (19), and arrange a moving electrode (8 ') on the end face of this end, the other end is fixedly connected with linkage block (15 '); Described fixed component (19) offers radial direction through hole, and described jackscrew (9 '), spring (10 ') and steel ball (11 ') are arranged in this radial direction through hole.The described spring (14 ') that compresses is arranged between fixed component (19) and linkage block (15 ') inner lower edge, and mutually supports with fixed component (19) and linkage block (15 ') madial wall bottom.
A kind of brushless liquid-resistance motor starter, it is characterized in that, comprise: liquid reserve tank housing (1), in described liquid reserve tank housing (1), be provided with motor shaft (2), start pole plate (3), binding post (4), centrifugal emptying explosion-proof valve (5) and the centrifugal switch as described in any one of claim 1-5, described startup pole plate (3) is connected with centrifugal switch by binding post (4).Accompanying drawing illustrates:
Fig. 1 is the embodiment of the present invention one brushless liquid-resistance motor starter centrifugal switch structural representation; Fig. 2 is the embodiment of the present invention two brushless liquid-resistance motor starter centrifugal switch structural representation; Fig. 3 is brushless liquid-resistance motor starter structure schematic diagram of the present invention.
Embodiment:
Please refer to described in Fig. 1 and Fig. 2, the invention provides a kind of brushless liquid-resistance motor starter centrifugal switch, comprise: be fixedly installed on the stationary electrode 7 on motor starter liquid reserve tank housing 1, 7 ' and be arranged on moving electrode 8 on elastic body, 8 ', after electric motor starting, moving electrode 8 under centrifugal action, 8 ' with stationary electrode 7, 7 ' laminating, described elastic body comprises: guide rod 12, 12 ', be set in described guide rod 12, linkage block 15 on 12 ', 15 ', and make linkage block after completing power start, make moving electrode 8, 8 ' and stationary electrode 7, what 7 ' separation resetted compresses spring 14, 14 ', described linkage block 15, 15 ' is set in described guide rod 12, on 12 '.Jackscrew 9,9 ', spring 10,10 ' and steel ball 11,11 ' in the radial direction through hole that described guide rod 12,12 ' radial direction is arranged, and at described guide rod 12, the cannelure 16,16 ' offered on 12 '.In order to make moving electrode 8,8 ' is more stable in the process of laminating stationary electrode 7,7 ', cannelure 16, moving electrode 8 when the distance x between the center line of 16 ' and the center line of radial direction through hole and motor do not start, and 8 ' and stationary electrode 7, the distance y between 7 ' is equal.Guide rod 12, connects with flexible circuit 18,18 ' between 12 ' and binding post.The structure of the centrifugal switch of each embodiment is illustrated below in conjunction with accompanying drawing.
Embodiment one
As shown in Figure 1, brushless liquid-resistance starter centrifugal switch provided by the invention comprises: stationary electrode 7, moving electrode 8, compress spring 14, insulation system 6, back-up ring 13, linkage block 15 and flexible circuit 18, described stationary electrode is fixed on liquid reserve tank housing 1, described linkage block 15 is sliding to be fitted on guide rod 12, described linkage block 15 is in tubular, corresponding with stationary electrode 7 on the top end face that described moving electrode 8 is located at described linkage block 15 sidewall; Described one end compressing spring 14 is against the end face of collets 6, the other end is against on the end face of linkage block 15 madial wall, the described spring 14 that compresses moves with linkage block 15 and produces deformation, and its effect one realizes brushless liquid-resistance soft starter for motor, and two is when sound electrode separation, sound electrode is resetted; The termination of described guide rod 12 is fixedly installed a back-up ring 13, departs from guide rod when sliding on guide rod 12 for preventing linkage block 15.
Described guide rod 12 is provided with cannelure 16, linkage block 15 is provided with two symmetrical radial direction through hole, jackscrew 9 is provided with in each radial direction through hole, spring 10 and steel ball 11, steel ball 11 is made to support in cannelure 16 by adjustment jackscrew 9 by spring 10, when cannelure center line does not start with motor with the distance X of radial direction through hole center line, moving electrode is equal with the distance Y between stationary electrode, therefore when moving electrode and stationary electrode are fitted, described steel ball is fallen in cannelure, sound electrode is fitted completely, annular groove depth is preferably less than the radius of steel ball, object is the power reducing steel ball disengaging cannelure, during in order to fall under voltage, steel ball does not exit cannelure, thus sound electrode is not separated, realize by adjustment jackscrew.
Operation principle of the present invention is as follows, shown in Figure 1, when the motor is energized, resistor fluid electrical conductive communication electric motor loop makes electric machine rotation, along with the continuous increase of motor speed, linkage block and the moving electrode be arranged in linkage block move to stationary electrode under the influence of centrifugal force, compress spring simultaneously and produce compression by the extruding of linkage block, when moving electrode and stationary electrode fit, steel ball enters in cannelure under the thrust of spring, sound electrode is fitted completely, when supply power voltage declines, as long as the amplitude of voltage drop is no more than the value preset, steel ball can not depart from cannelure, sound electrode would not be separated, thus avoid and cause electrode damage because the fluctuation of voltage or the unstable sound electrode of motor load frequently occur to be separated the electric arc caused.
Embodiment two
As shown in Figure 2, the centrifugal switch that the present embodiment provides is substantially identical with the centrifugal switch structure of embodiment one, difference is, the centrifugal switch of the present embodiment also comprises: fixed component 19, described fixed component 19 is fixedly connected with described liquid reserve tank housing 1 by insulation column 6 ', one end of described guide rod 12 ' is arranged in this fixed component 19, and arranges a moving electrode 8 ' on the end face of this end, and the other end is fixedly connected with linkage block 15 '; Described radial direction through hole is opened on described fixed component 19; The described spring 14 ' that compresses is arranged between fixed component 19 and linkage block 15 ' inner lower edge, and mutually supports with fixed component 19 and linkage block 15 ' madial wall bottom.
The present embodiment centrifugal switch is consistent with the starting pinciple of the centrifugal switch of embodiment one, difference be the working method of the centrifugal switch of the present embodiment and embodiment one different, specifically: please refer to shown in Fig. 2, when the motor is energized, resistor fluid electrical conductive communication electric motor loop makes electric machine rotation, along with the continuous increase of motor speed, the guide rod 12 ' that linkage block 15 ' is fixedly connected with linkage block 15 ' and the moving electrode 8 ' be arranged on guide rod 12 ' end face move to stationary electrode 7 ' under the influence of centrifugal force, compress spring 14 ' be subject to the extruding of linkage block 15 ' and produce compressive deformation simultaneously.
The present embodiment in sound electrode laminating process when voltage occurs to decline or motor load change time sound electrode can not be separated thus avoid frequently occurring that electric arc is identical with embodiment one to the principle of electrode damage, do not repeat them here.
The present invention is except providing the centrifugal switch in above-described embodiment, a kind of brushless liquid-resistance motor starter is also provided, as shown in Figure 3, brushless liquid-resistance motor starter comprises: liquid reserve tank housing 1, in described liquid reserve tank housing 1, be provided with motor shaft 2, start pole plate 3, binding post 4, centrifugal emptying explosion-proof valve 5 and the centrifugal switch described in above-described embodiment, described startup pole plate 3 is connected with centrifugal switch by binding post 4.
Claims (6)
1. a brushless liquid-resistance motor starter centrifugal switch, comprise: be fixedly installed on the stationary electrode (7 on motor starter liquid reserve tank housing (1), 7 ') and the moving electrode (8 be arranged on elastic body, 8 '), after electric motor starting, moving electrode (8 under centrifugal action, 8 ') with stationary electrode (7, 7 ') fit, described elastic body comprises: guide rod (12, 12 '), be set in described guide rod (12, 12 ') linkage block (15 on, 15 '), and make linkage block after completing power start, make moving electrode (8, 8 ') and stationary electrode (7, 7 ') what be separated reset compresses spring (14, 14 '), it is characterized in that: cannelure (16, 16 ') center line with along described guide rod (12, 12 ') the radial jackscrew (9 arranged, 9 '), spring (10, 10 ') and steel ball (11, 11 ') moving electrode (8 when the distance x between center line and motor do not start, 8 ') with stationary electrode (7, 7 ') the distance y between is equal.
2. centrifugal switch as claimed in claim 1, it is characterized in that, described guide rod (12) is fixedly connected with liquid reserve tank housing (1) by insulation system (6), described linkage block (15) and guide rod (12) sliding fit, and described moving electrode (8) is arranged in described linkage block (15); Described linkage block (15) offers radial direction through hole, and described jackscrew (9), spring (10) and steel ball (11) are arranged in this radial direction through hole.
3. centrifugal switch as claimed in claim 2, is characterized in that, described in compress spring (14) and be arranged between insulation system (6) and linkage block (15) madial wall bottom, and mutually to support with insulation system (6) and linkage block (15) madial wall bottom.
4. centrifugal switch as claimed in claim 3, it is characterized in that, described centrifugal switch also comprises fixed component (19), described fixed component (19) is fixedly connected with described liquid reserve tank housing (1) by insulation column (6 '), one end of described guide rod (12 ') is arranged in this fixed component (19), and arrange a moving electrode (8 ') on the end face of this end, the other end is fixedly connected with linkage block (15 '); Described fixed component (19) offers radial direction through hole, and described jackscrew (9 '), spring (10 ') and steel ball (11 ') are arranged in this radial direction through hole.
5. centrifugal switch as claimed in claim 4, it is characterized in that, the described spring (14 ') that compresses is arranged between fixed component (19) and linkage block (15 ') inner lower edge, and mutually supports with fixed component (19) and linkage block (15 ') madial wall bottom.
6. a brushless liquid-resistance motor starter, it is characterized in that, comprise: liquid reserve tank housing (1), in described liquid reserve tank housing (1), be provided with motor shaft (2), start pole plate (3), binding post (4), centrifugal emptying explosion-proof valve (5) and the centrifugal switch as described in any one of claim 1-5, described startup pole plate (3) is connected with centrifugal switch by binding post (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519182.8A CN105071707A (en) | 2015-08-24 | 2015-08-24 | Centrifugal switch and brushless liquid-resistance motor starter comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519182.8A CN105071707A (en) | 2015-08-24 | 2015-08-24 | Centrifugal switch and brushless liquid-resistance motor starter comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105071707A true CN105071707A (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510519182.8A Pending CN105071707A (en) | 2015-08-24 | 2015-08-24 | Centrifugal switch and brushless liquid-resistance motor starter comprising same |
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| CN (1) | CN105071707A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU428512A1 (en) * | 1972-01-31 | 1974-05-15 | Н. П. Сидельников, А. Н. Пылев , И. Т. Заставной | RELAY CONTROL |
| CN1414695A (en) * | 2002-10-24 | 2003-04-30 | 路光明 | Built in motor stator |
| CN201430563Y (en) * | 2009-07-09 | 2010-03-24 | 尚勤贵 | Liquid resistance starter of brushless autocontrol motor |
| CN201467043U (en) * | 2009-07-30 | 2010-05-12 | 尚勤贵 | Brushless self-control motor liquid resistance starter |
| CN202455302U (en) * | 2012-03-16 | 2012-09-26 | 温州市曙光起动设备有限公司 | Brushless liquid-resistance motor starter short-circuit switch |
| CN203690156U (en) * | 2013-12-13 | 2014-07-02 | 天津华宁电子有限公司 | Quick door opening mechanical interlocking device for electrical apparatus |
| CN204835993U (en) * | 2015-08-24 | 2015-12-02 | 尚勤贵 | Centrifugal switch and brushless liquid that has this centrifugal switch hinder motor starter |
-
2015
- 2015-08-24 CN CN201510519182.8A patent/CN105071707A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU428512A1 (en) * | 1972-01-31 | 1974-05-15 | Н. П. Сидельников, А. Н. Пылев , И. Т. Заставной | RELAY CONTROL |
| CN1414695A (en) * | 2002-10-24 | 2003-04-30 | 路光明 | Built in motor stator |
| CN201430563Y (en) * | 2009-07-09 | 2010-03-24 | 尚勤贵 | Liquid resistance starter of brushless autocontrol motor |
| CN201467043U (en) * | 2009-07-30 | 2010-05-12 | 尚勤贵 | Brushless self-control motor liquid resistance starter |
| CN202455302U (en) * | 2012-03-16 | 2012-09-26 | 温州市曙光起动设备有限公司 | Brushless liquid-resistance motor starter short-circuit switch |
| CN203690156U (en) * | 2013-12-13 | 2014-07-02 | 天津华宁电子有限公司 | Quick door opening mechanical interlocking device for electrical apparatus |
| CN204835993U (en) * | 2015-08-24 | 2015-12-02 | 尚勤贵 | Centrifugal switch and brushless liquid that has this centrifugal switch hinder motor starter |
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Application publication date: 20151118 |