CN2901557Y - Sucking-on/maintenance circuit of electromagnetic switch mechanism - Google Patents
Sucking-on/maintenance circuit of electromagnetic switch mechanism Download PDFInfo
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- CN2901557Y CN2901557Y CN 200620024602 CN200620024602U CN2901557Y CN 2901557 Y CN2901557 Y CN 2901557Y CN 200620024602 CN200620024602 CN 200620024602 CN 200620024602 U CN200620024602 U CN 200620024602U CN 2901557 Y CN2901557 Y CN 2901557Y
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- switch mechanism
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- voltage
- electromagnetic switch
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- 238000012423 maintenance Methods 0.000 title claims description 6
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000000151 anti-reflux effect Effects 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000002688 persistence Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Relay Circuits (AREA)
Abstract
An electromagnetic switch mechanism attracting / maintaining circuit belongs to the emergency protective circuit device field, comprising a first commutating unit, a first and a second switching unit. The electromagnetic switch mechanism attracting / maintaining circuit is characterized in that an anti-countercurrent unit and a filtering unit are disposed between a reduced-voltage / commutating unit and the second switching unit, wherein the anti-countercurrent unit is concatenated between the reduced-voltage / commutating unit and the second switching unit and the filtering unit is joined on the output end of the reduced-voltage / commutating unit in parallel. Equipping the filtering unit can prevent a magnet coil from occurring the phenomenon of losing electric inductance and releasing for maintaining voltage and / or current passing zero, and only the lower maintaining voltage is needed to guarantee the stabilization and the persistence of the attracting power of the magnet coil, thereby reducing the maintaining voltage endured by the magnet attracting coil and decreasing the heating capacity thereof, which is beneficial to prolong the operating life, enhance the operating stability of the whole switch device and reducing the probability of mistaken operation and faults. The electromagnetic switch mechanism attracting / maintaining circuit can be widely used in the controlling domain of the switch mechanism device of each electromagnetic switch.
Description
Technical Field
The utility model belongs to urgent protection circuit device field especially relates to an operating device that is used for electromagnetic type switch of power supply or distribution.
Background
In the existing electromagnetic switch, a device for controlling the suction and/or release (i.e. controlling the on and off of the main contact of the switch) of a main joint (also called a main contact) of the switch is an electromagnetic coil, a matched iron core and an accessory structural member thereof, when the switch needs to be closed, the electromagnetic coil is electrified, the coil generates electromagnetic suction, the iron core is attracted to move downwards, the tension of a reset spring is overcome, a moving contact in the main contact of the switch is driven to be in contact with a static contact, and a main loop is switched on.
Because the wire diameter of the wire forming the electromagnetic coil is small, the electromagnetic coil can generate heat after being electrified for a long time, and the coil can be burnt when the electromagnetic coil is serious, so that the normal work and the service life of the switch are influenced.
For this reason, various solutions have emerged, and the more typical and common technical solutions are: in the initial stage of energizing the solenoid coil, a stronger current/voltage is provided, and when the iron core is attracted to the position, in order to reduce the power consumption and the heat generation of the solenoid coil, only a lower current/voltage is generally provided to maintain the attraction state of the solenoid coil (namely, the attraction state is called high-voltage attraction and low-voltage maintenance).
The Chinese patent with publication number CN 2088303Y, publication date of 11/6/1991, discloses a silent energy-saving phase-discrimination leakage protector, which has the technical scheme that a higher attraction voltage is provided for an electromagnetic coil in the initial attraction stage of the electromagnetic coil to enable the switch to act and close, and a low-voltage direct current is provided to maintain the attraction of the electromagnetic switch after the switch is closed, so that the aims of saving energy, reducing noise, reducing the heat productivity of the coil and prolonging the service life of the electromagnetic coil are fulfilled.
However, the above technical solution has a problem: in a low-voltage maintaining state, because the maintaining voltage is a pulsating direct-current voltage, a voltage and/or current zero crossing point exists, and the attraction force of the electromagnetic coil is instantaneously zero; in order to ensure the attraction force of the electromagnetic armature, a relatively high maintaining voltage is still needed to prevent the electromagnetic coil from releasing due to the loss of inductance caused by the zero crossing point of the voltage and/or the current.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an electromagnetic type on-off mechanism actuation/maintenance circuit is provided, it can prevent that solenoid from losing the emergence of inductance and release phenomenon because of the zero crossing point of holding voltage and/or electric current, only need lower holding voltage can guarantee the stability and the continuation of solenoid actuation power, thereby the holding voltage that reducible electromagnetism actuation coil bore reduces its calorific capacity, be favorable to prolonging its working life, improve whole switching device's job stabilization nature, reduce the emergence probability of its malfunction and trouble.
The technical scheme of the utility model is that: the utility model provides an electromagnetic type on-off mechanism actuation/maintenance circuit, including the first rectifier unit of series connection between alternating current power supply and solenoid, first switching unit and the second switching unit of series connection between step-down/rectifier unit and solenoid, characterized by: a backflow preventing unit and a filtering unit are arranged between the voltage reduction/rectification unit and the second switching unit; the anti-reflux unit is connected in series between the voltage reduction/rectification unit and the second switching unit; the filtering unit is connected in parallel with the output end of the voltage reduction/rectification unit.
Furthermore, the first rectifying unit and the reverse flow preventing unit are diode circuits, the filtering unit is a capacitor filtering circuit, and the first switching unit and the second switching unit are electric switching circuits.
Specifically, the first rectifying unit comprises a diode D1, the first switching unit comprises a connection point K1, the second switching unit comprises a connection point K2, the voltage reduction/rectifying unit comprises a transformer B and a rectifier bridge Q, the backflow prevention unit comprises a diode D2, and the filtering unit comprises a capacitor C; the diode D1 and the joint K1 are connected in series between one end of an alternating current power supply and one end of the electromagnetic coil J, the primary side of the transformer B is connected with the alternating current power supply, the secondary side of the transformer B is connected with the alternating current input ends 1 and 2 of the rectifier bridge Q, the direct current output end 4 of the rectifier bridge Q is connected with one end of the electromagnetic coil J through the diode D2 and the joint K2, the capacitor C is connected between the direct current output ends 3 and 4 of the rectifier bridge Q in parallel, and the other end of the electromagnetic coil J is grounded.
Compared with the prior art, the utility model has the advantages that:
1. the filter circuit is arranged at the output end of the low-voltage maintaining power supply circuit, the pulsating voltage output by the low-voltage maintaining power supply circuit is smoothed, the zero crossing phenomenon of the maintaining voltage is avoided, the effective value of the output voltage is improved, the instant release of the electromagnetic coil due to the zero voltage is avoided, and the attraction force and the attraction stability of the electromagnetic coil are greatly improved;
2. on the premise of ensuring enough electromagnetic coil attracting force, the stability and the continuity of the electromagnetic coil attracting force can be ensured only by lower maintaining voltage, so that the maintaining attracting voltage born by the electromagnetic attracting coil can be reduced, the heat productivity of the electromagnetic attracting coil is reduced, the service life of the electromagnetic attracting coil is prolonged, the working stability of the whole switch device is improved, and the occurrence probability of misoperation and faults of the switch device is reduced.
Drawings
Fig. 1 is a block diagram of the circuit of the present invention;
fig. 2 is a circuit diagram of an embodiment of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
In fig. 1, the attraction/hold circuit of the electromagnetic switch mechanism according to the present invention includes a first rectifying unit, a first switching unit, and a second switching unit, which are connected in series between the ac power supply and the electromagnetic coil, and is characterized in that an anti-reverse-flow unit and a filter unit are disposed between the voltage-reducing/rectifying unit and the second switching unit, and the anti-reverse-flow unit is connected in series between the voltage-reducing/rectifying unit and the second switching unit; the filtering unit is connected in parallel with the output end of the voltage reduction/rectification unit.
Furthermore, the first rectifying unit and the reverse flow preventing unit are diode circuits, the filtering unit is a capacitor filtering circuit, and the first switching unit and the second switching unit are electric switching circuits.
In fig. 2, the first rectifying unit includes a diode D1, the first switching unit includes a junction K1, the second switching unit includes a junction K2, the step-down/rectifying unit includes a transformer B and a rectifier bridge Q, the reverse flow preventing unit includes a diode D2, and the filtering unit includes a capacitor C; the diode D1 and the joint K1 are connected in series between one end of an alternating current power supply and one end of the electromagnetic coil J, the primary side of the transformer B is connected with the alternating current power supply, the secondary side of the transformer B is connected with the alternating current input ends 1 and 2 of the rectifier bridge Q, the direct current output end 4 of the rectifier bridge Q is connected with one end of the electromagnetic coil J through the diode D2 and the joint K2, the capacitor C is connected between the direct current output ends 3 and 4 of the rectifier bridge Q in parallel, and the other end of the electromagnetic coil J is grounded.
Because the utility model discloses output at step-down/rectifier unit has set up filter circuit, the pulsating voltage smoothing of power supply circuit output is maintained with the low pressure, the event can prevent that solenoid from losing the emergence of inductance and release phenomenon because of the zero crossing point of holding voltage and/or electric current, only need lower holding voltage can guarantee the stability and the continuation of solenoid actuation force, thereby the holding voltage that reducible electromagnetism actuation coil bore, reduce its calorific capacity, be favorable to prolonging its working life, improve whole switching device's job stabilization nature, reduce the emergence probability of its malfunction and trouble.
The utility model discloses can extensively be used for the control field of the on-off mechanism device of various electromagnetic type switches.
Claims (6)
1. An electromagnetic switch mechanism pull-in/maintenance circuit comprises a first rectifying unit, a first switching unit and a second switching unit, wherein the first rectifying unit and the first switching unit are connected between an alternating current power supply and an electromagnetic coil in series, and the electromagnetic switch mechanism pull-in/maintenance circuit is characterized in that:
a backflow preventing unit and a filtering unit are arranged between the voltage reduction/rectification unit and the second switching unit;
the anti-reflux unit is connected in series between the voltage reduction/rectification unit and the second switching unit;
the filtering unit is connected in parallel with the output end of the voltage reduction/rectification unit.
2. The electromagnetic switch mechanism pull-in/hold circuit as claimed in claim 1, wherein said anti-reverse flow unit is a diode circuit.
3. The electromagnetic switch mechanism pull-in/hold-in circuit of claim 1, wherein said filter unit is a capacitive filter circuit.
4. The electromagnetic switch mechanism pull-in/hold circuit as claimed in claim 1, wherein said first rectifying unit is a diode circuit.
5. The electromagnetic switch mechanism engaging/maintaining circuit of claim 1, wherein said first and second switching elements are electrical switching circuits.
6. An electromagnetic switch mechanism pick-up/hold circuit as claimed in claim 1, characterized in that
The first rectifying unit comprises a diode D1;
the first switching unit comprises a contact K1;
the second switching unit comprises a contact K2;
the voltage reduction/rectification unit comprises a transformer B and a rectifier bridge Q;
the anti-backflow unit comprises a diode D2;
the filtering unit comprises a capacitor C;
wherein,
the diode D1 and the joint K1 are connected in series between one end of the alternating current power supply and one end of the electromagnetic coil J;
the primary side of the transformer B is connected with an alternating current power supply, and the secondary side of the transformer B is connected with alternating current input ends 1 and 2 of a rectifier bridge Q;
the direct current output end 4 of the rectifier bridge Q is connected with one end of the electromagnetic coil J through a diode D2 and a joint K2;
the capacitor C is connected in parallel between the direct current output ends 3 and 4 of the rectifier bridge Q;
the other end of the electromagnetic coil J is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620024602 CN2901557Y (en) | 2006-06-02 | 2006-06-02 | Sucking-on/maintenance circuit of electromagnetic switch mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620024602 CN2901557Y (en) | 2006-06-02 | 2006-06-02 | Sucking-on/maintenance circuit of electromagnetic switch mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2901557Y true CN2901557Y (en) | 2007-05-16 |
Family
ID=38085721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620024602 Expired - Fee Related CN2901557Y (en) | 2006-06-02 | 2006-06-02 | Sucking-on/maintenance circuit of electromagnetic switch mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2901557Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950709A (en) * | 2010-09-17 | 2011-01-19 | 上海诺雅克电气有限公司 | Low-voltage holding contactor |
| CN107578953A (en) * | 2017-09-06 | 2018-01-12 | 珠海格力电器股份有限公司 | Relay voltage reduction control circuit and control method |
| WO2020063871A1 (en) * | 2018-09-28 | 2020-04-02 | 中兴通讯股份有限公司 | Driving circuit and method for relay, storage medium and electronic apparatus |
| CN114730675A (en) * | 2019-12-03 | 2022-07-08 | 三菱电机株式会社 | Electromagnetic coil drive circuit |
-
2006
- 2006-06-02 CN CN 200620024602 patent/CN2901557Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950709A (en) * | 2010-09-17 | 2011-01-19 | 上海诺雅克电气有限公司 | Low-voltage holding contactor |
| CN101950709B (en) * | 2010-09-17 | 2013-05-01 | 上海诺雅克电气有限公司 | Low-voltage holding contactor |
| CN107578953A (en) * | 2017-09-06 | 2018-01-12 | 珠海格力电器股份有限公司 | Relay voltage reduction control circuit and control method |
| CN107578953B (en) * | 2017-09-06 | 2019-12-20 | 珠海格力电器股份有限公司 | Relay voltage reduction control circuit and control method |
| WO2020063871A1 (en) * | 2018-09-28 | 2020-04-02 | 中兴通讯股份有限公司 | Driving circuit and method for relay, storage medium and electronic apparatus |
| CN114730675A (en) * | 2019-12-03 | 2022-07-08 | 三菱电机株式会社 | Electromagnetic coil drive circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070516 Termination date: 20110602 |