CN201936818U - Energy-saving arc-free electromagnetic contactor - Google Patents
Energy-saving arc-free electromagnetic contactor Download PDFInfo
- Publication number
- CN201936818U CN201936818U CN2011200465443U CN201120046544U CN201936818U CN 201936818 U CN201936818 U CN 201936818U CN 2011200465443 U CN2011200465443 U CN 2011200465443U CN 201120046544 U CN201120046544 U CN 201120046544U CN 201936818 U CN201936818 U CN 201936818U
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- solid state
- coil
- state relay
- contactor
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Abstract
The utility model relates to an energy-saving arc-free electromagnetic contactor, which comprises a coil rack, a coil, an iron core and an electronic circuit for driving the contactor, wherein the electronic circuit comprises a first solid relay, a second solid relay and a control circuit, and the contact ends of the two solid relays are respectively connected with two ends of the coil; after the energy-saving arc-free electromagnetic contactor is electrified, the control circuit controls a power supply to be accessed to the first solid relay, so the first solid relay acts, a current from top to bottom is produced in the coil, and the iron core is magnetized to facilitate the action of the contactor; and the control circuit controls the first solid relay to be powered off, a current from bottom to top is produced in the coil, and the iron core is magnetized in an opposite direction, so the contactor is disconnected. A large-capacity electrolytic capacitance in the electronic circuit is cancelled, so the self-oscillation phenomenon of the electrolytic capacitance and the controlled electromagnetic coil can be avoided, and the working stability of the contactor can be guaranteed; and at the same time, a contact-free switching select repeater (SSR) solid relay is adopted to control the contactor, the damage of the high-voltage electric arc on the relay, which is produced during the switching of contacts, can be avoided, and the service life of the electronic circuit is prolonged.
Description
Technical field
The utility model relates to a kind of electromagnetic contactor.
Background technology
The electromagnetic contactor hardware configuration generally comprises iron core, armature, excitation winding (coil) three parts, electronic circuit also is set in addition is used for its work control.Its electronic circuit usually as shown in Figure 2, work as energized, the rectifier bridge rectification that alternating current is formed by diode is again through relay U1 closing coil 2, capacitor C 3 chargings to circuit, the direct impulse electric current is arranged in the coil 2, the electromagnetic fields magnetization that produced by the momentary pulse electric current this moment unshakable in one's determination 3, with magnet 4 with the principle that the same sex is repelled each other, there is a natural attraction between the sexes produce one push away one draw make a concerted effort the then dynamic and static contact adhesive of contactor.When capacitor C 3 is full of electric charge, no current in the coil, after impulse circuit stopped, magnetic field disappeared, and at this moment, magnetic bobbin core 3 is held by magnet 4, promptly locks, and keeps in touch the dynamic and static contact attracting state of device.During deenergization, capacitor C 3 discharges, give 2 one revertive impulsing circuits of coil, unshakable in one's determination 3 are reversed the electromagnetic field magnetization that pulse current produces, but magnetic was opposite when this moment, its magnetic was with energized, according to magnet 4 with the principle that the same sex is repelled each other, there is a natural attraction between the sexes also produce one push away one draw make a concerted effort, then the dynamic and static contact of contactor disconnects.In order to guarantee at electric power starting and turn-off transient, contacts of contactor can be stablized adhesive or disconnection, the bigger electrochemical capacitor of capacitor C 3 common employing capacity in the electronic circuit, but electrochemical capacitor and controlled solenoid may produce self-oscillation, influence the contactor operate as normal.
Summary of the invention
The problem that the utility model need solve provides a kind of employing noncontacting switch mode, the electromagnetic contactor of stable and reliable working performance.
To achieve these goals, the technical solution used in the present invention is: a kind of energy-conservation no arc electromagnetic contactor, comprise bobbin, be wound in coil on the bobbin, be positioned at the iron core of bobbin and be connected the electronic circuit that is used to drive contactor with coil, at upper and lower unshakable in one's determination a corresponding ndfeb magnet of magnetic pole is installed respectively, described electronic circuit comprises first solid state relay and second solid state relay and control circuit, and two solid state relay tip sides are the connecting coil two ends respectively; After powering on, control circuit control power supply inserts first solid state relay, and then first solid state relay action produces top-down electric current in the coil, and magnetization unshakable in one's determination impels the contactor action; Control the first solid state relay power supply and disconnect, then power supply is added on second solid state relay, produces electric current from bottom to top in the coil, magnetic reversal unshakable in one's determination, and then contactor disconnects.
Compared with prior art, the utlity model has following advantage: cancelled jumbo electrochemical capacitor in the described contactor electronic circuit, avoided electrochemical capacitor and controlled solenoid self-oscillation phenomenon, guaranteed the job stability of contactor; Adopt contactless SSR solid state relay control simultaneously, the high-voltage arc that has produced when having avoided the contact to switch is to the damage of relay, and the working life that has prolonged electronic circuit further guarantees its reliable and stable work.
Description of drawings
Fig. 1 is the structural representation of described electromagnetic contactor;
Fig. 2 is the electronic-circuit diagram of existing electromagnetic contactor;
Fig. 3 is described electromagnetic contactor electronic circuit schematic diagram.
Embodiment
For the ease of those skilled in the art's understanding, structural principle of the present invention is described in further detail below in conjunction with specific embodiment and accompanying drawing.
As Fig. 1, the electromagnetic contactor that the utility model disclosed, comprise bobbin 1, be wound in coil 2 on the bobbin 1, be positioned at the iron core 3 of bobbin 1 and be connected the electronic circuit A that is used to drive contactor with coil 2, correspondence 3 upper and lowers unshakable in one's determination respectively is equipped with a corresponding ndfeb magnet 4 of magnetic pole on connecting frame 5.
The electronic circuit of this energy-conservation no arc electromagnetic contactor comprises the first solid state relay SSR1 and second solid state relay SSR2 and the control circuit, and SSR1 and SSR2 output (tip side) connect the two ends of solenoid 2 respectively.AC power is supplied with two solid state relay SSR1 and SSR2 through the photoelectricity coupling circuit.The SSR1 output is for often opening, and the SSR2 output is normally closed.When the SSR1 input disconnected, BG ended.The SSR1 no-output.Voltage is added on the SSR2, SSR2 output.When the SSR1 input is connected.The BG conducting, SSR1 output.Voltage-stabiliser tube DW ensures when SSR1 exports, the SSR2 no-output.Opening and closing, the sense of current in the change electronic coil by SSR1 and SSR2 output.Thereby the N of iron core in the change solenoid, the S utmost point is realized adhesive and repulsion with the Nd-Fe-B permanent magnet component.
Concrete enforcement electric power such as Fig. 3 of electronic circuit.Wherein, control circuit comprises optocoupler U1, and optocoupler U1 one output connects two solid state relay SSR1 control end positive poles by resistance R 3; Another output of optocoupler U1 connects triode BG base stage by resistance R 1, triode BG collector electrode connects the first solid state relay SSR1 control end negative pole, triode BG emitter grounding, optocoupler U1 should be held simultaneously and also connect the second solid state relay SSR2 control end negative pole by voltage-stabiliser tube DW.
The first solid state relay SSR1 normally opened contact is connected with coil 2 one ends, the second solid state relay SSR2 normally-closed contact is connected with coil 2 other ends, the first solid state relay SSR1 intermediate contact is connected to the positive pole of power supply, its normally-closed contact and the second solid state relay SSR2 often open normally opened contact, normally-closed contact all is connected.
Coil 2 two ends also are parallel with the filter circuit that capacitor C and resistance R 4 are composed in series.
This kind contactor need not to continue energising and keeps work in coil, have energy-saving effect, simultaneously stable work in work.
In this explanation, do not conceive under the prerequisite its any minor variations of doing and be equal to replacement breaking away from the present invention, all should belong to protection scope of the present invention.
Claims (4)
1. energy-conservation no arc electromagnetic contactor, comprise bobbin (1), be wound in coil (2) on the bobbin (1), be positioned at the iron core (3) of bobbin (1) and be connected the electronic circuit that is used to drive contactor with coil (2), at (3) upper and lower unshakable in one's determination a corresponding ndfeb magnet of magnetic pole is installed respectively, it is characterized in that, described electronic circuit comprises first solid state relay (SSR1), second solid state relay (SSR2) and control circuit, and two solid state relay tip sides are connecting coil (2) two ends respectively; After powering on, control circuit control power supply inserts first solid state relay (SSR1), and then first solid state relay (SSR1) action produces top-down electric current in the coil (2), and (3) unshakable in one's determination magnetization impels the contactor action; Control first solid state relay (SSR1) power supply and disconnect, then power supply is added on second solid state relay (SSR2), produces electric current from bottom to top in the coil (2), (3) magnetic reversal unshakable in one's determination, and then contactor disconnects.
2. energy-conservation no arc electromagnetic contactor according to claim 1 is characterized in that: described coil (2) two ends also are parallel with the filter circuit that capacitor C and resistance R 4 are composed in series.
3. energy-conservation no arc electromagnetic contactor according to claim 1, it is characterized in that: described control circuit comprises optocoupler (U1), optocoupler (U1) output connects two solid state relays (SSR1) control end positive pole by resistance (R3); Another output of optocoupler (U1) connects triode (BG) base stage by resistance (R1), triode (BG) collector electrode connects first solid state relay (SSR1) control end negative pole, triode (BG) emitter grounding, this end of optocoupler (U1) also connect second solid state relay (SSR2) control end negative pole by voltage-stabiliser tube (DW) simultaneously.
4. energy-conservation no arc electromagnetic contactor according to claim 1, it is characterized in that: described first solid state relay (SSR1) normally opened contact is connected with coil (2) one ends, second solid state relay (SSR2) normally-closed contact is connected with coil (2) other end, first solid state relay (SSR1) intermediate contact is connected to the positive pole of power supply, its normally-closed contact and second solid state relay (SSR2) often open normally opened contact, normally-closed contact all is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200465443U CN201936818U (en) | 2011-02-24 | 2011-02-24 | Energy-saving arc-free electromagnetic contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200465443U CN201936818U (en) | 2011-02-24 | 2011-02-24 | Energy-saving arc-free electromagnetic contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201936818U true CN201936818U (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200465443U Expired - Fee Related CN201936818U (en) | 2011-02-24 | 2011-02-24 | Energy-saving arc-free electromagnetic contactor |
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| Country | Link |
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| CN (1) | CN201936818U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105282915A (en) * | 2014-06-06 | 2016-01-27 | 松下知识产权经营株式会社 | Switching device and load control system |
| CN113823526A (en) * | 2021-09-27 | 2021-12-21 | 杨帆 | Alternating-current zero-crossing action arc-free switch and working method thereof |
-
2011
- 2011-02-24 CN CN2011200465443U patent/CN201936818U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105282915A (en) * | 2014-06-06 | 2016-01-27 | 松下知识产权经营株式会社 | Switching device and load control system |
| CN105282915B (en) * | 2014-06-06 | 2017-12-05 | 松下知识产权经营株式会社 | Switching device and load control system |
| CN113823526A (en) * | 2021-09-27 | 2021-12-21 | 杨帆 | Alternating-current zero-crossing action arc-free switch and working method thereof |
| CN113823526B (en) * | 2021-09-27 | 2023-09-08 | 杨帆 | AC zero-crossing action arc-free switch and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20170224 |
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| CF01 | Termination of patent right due to non-payment of annual fee |