CN102262978A - Control device for contactor coil - Google Patents
Control device for contactor coil Download PDFInfo
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- CN102262978A CN102262978A CN2011100039421A CN201110003942A CN102262978A CN 102262978 A CN102262978 A CN 102262978A CN 2011100039421 A CN2011100039421 A CN 2011100039421A CN 201110003942 A CN201110003942 A CN 201110003942A CN 102262978 A CN102262978 A CN 102262978A
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- normally closed
- contactor
- closed interlock
- control device
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Abstract
The invention relates to a control device for a contactor coil. The control device comprises a wide voltage operation component which is assembled on the end part of a contactor base and is located under a coil connecting terminal, wherein the key technical point is that the wide voltage operation component integrated with a base comprises a large over-travel normally closed contact and a circuit board; the circuit board is connected to a power input end and an automatic switching control circuit of a coil through the large over-travel normally closed contact which is used as a control switch; and the automatic switching control circuit is composed of an alternated current control circuit and a direct current control circuit. The control device for the contactor coil has the advantages of an energy-saving contactor that the wide voltage operation is reliable and the energy-saving effect is better. Besides, because the alternated current full-voltage starting is adopted in the control device and the large over-travel normally closed contact is used for automatically switching the alternated current full voltage into the direct current low voltage sustaining before finishing starting, compared with a similar product, the control device has the advantages that a control circuit design is reasonable, the use is safe, the structure is simple, the cost is lower, the volume is smaller, an operating voltage range of the coil can reach 70%-130%, and the use property of the contactor is obviously promoted.
Description
Technical field
The present invention relates to a kind of control assembly that improves low-voltage electrical apparatus switch contact energy-saving effect, particularly a kind of improved employing has the contactor coil control device of the wide voltage power supply assembly of built-in excess voltage suppressor.
Background technology
There is overvoltage in the tradition contactor coil when minute deenergizing, up to the mid-80, International Power association has proposed the EMC electromagnetic compatibility standard, and Siemens at first proposes capacitance-resistance and absorbs excess voltage suppressor, is connected in parallel on product outside top lead and is connected to the coil two ends.After the nineties, the coil control technology is paid attention to widely, mainly be at energy-conservationly proposed that the mechanical pin snap close is energy-conservation, the permanent magnet snap close is energy-conservation, method such as twin coil energy saving, applying electronic pulse control technique are energy-conservation, the contactor coil control technology is improved.For example following Chinese patent: 93240886.9 " energy-saving alternating current contactor ", 92237393.0 " energy-saving alternating current contactor ", 200820156631.2 " energy-saving contactor ", 200420111242.X " little power consumption energy-saving contactor ", 200810036904.4 " energy-saving contactor " etc. is mechanical lock button-type energy-saving contactor.Some shortcomings such as it has had energy-saving effect to a certain extent, but also exists structure complicated, and volume is bigger.Also have 93228781.6 " energy saving ac contactor ", 97236918..X " energy-saving alternating current contactor ", 200910026950.0 " energy-saving contactor " etc. be permanent magnet snap close type energy-saving contactor, it keeps the characteristics of not electricity consumption good energy-conserving effect, but the release electric capacity that has a power failure causes volume to strengthen." having wide voltage energy-saving silencing contactor " of 01271607.3 for another example, 01102785.1 " A.C. contactor wide-voltage module " etc. is applying electronic control technique energy-saving contactor, and its energy-saving effect is compared less.The inventor once at prior art exist because of the narrower troublesome deficiency of operating voltage range, designing the patent No. is ZL01248694.9 " a kind of energy-saving contactor ", proposed at the alternating current operation coil, the contactor of wide voltage power supply assembly is adopted in control, it adopts the interchange capacitive reactance not have the power consumption step-down, the little power consumption of dc low-voltage keeps, and wide voltage power supply energy-saving module is set in the base remaining space, reaches purpose of energy saving.But its weak point is to be applied in the not high circuit of power network overvoltage, and needs enough remaining spaces wide voltage power supply energy-saving module is installed.In addition, in the circuit design of " band change over switch energy-saving contactor " 023272380, adopt resistance R, the capacitor C structure in parallel with change over switch, this is the main cause that causes capacitor C to be damaged easily.Operating voltage is that the volume of AC800V is very restricted its range of application.
Summary of the invention
The invention provides a kind of contactor coil control device that adopts improved wide voltage power supply assembly, the wide voltage power supply that former energy-conservation contactor has is reliable except that keeping, energy-saving effect is preferably the advantage, Circuit Design is reasonable, safe in utilization, simple in structure compared with similar products for it, cost is lower, volume is less, the coil working voltage range can reach 70% ~ 130%, significantly improves the serviceability of contactor.
The technical solution adopted in the present invention is: this contactor coil control device comprises the wide voltage power supply assembly that is assembled in the contactor base end and is positioned at winding wiring terminal below, its technical essential is: the described wide voltage power supply assembly that becomes one with base comprises big excess of stroke normally closed interlock and wiring board, and the automatic conversioning controling circuit that is connected power input and coil by described big excess of stroke normally closed interlock as control switch is set on described wiring board; Described automatic conversioning controling circuit is made of AC control circuit and DC control circuit, described AC control circuit comprises the built-in excess voltage suppressor that is made of capacitor C 1 and resistance R 1 that is connected ac power input end, the circuit that connects into by bridge rectifier and described coil by described big excess of stroke normally closed interlock, the circuit that connects into by bridge rectifier and coil by energy-conservation capacitor C 2 and current-limiting resistance R2; Described DC control circuit comprises the piezo-resistance that is connected dc supply input, the coil freewheeling circuit of forming by diode D5, D6, circuit by the actuating coil QX in described big excess of stroke normally closed interlock and the described coil connects into is connected in series the circuit that the actuating coil QX in back and the described coil connects into by the hold-in winding BX in current-limiting resistance R2 and the described coil.
Described current-limiting resistance R2 is a metalfilmresistor, and described energy-conservation capacitor C 2 adopts the AC275V AC capacitor or adopts two AC275V AC capacitor series connection.
Described big excess of stroke normally closed interlock is made up of the fixed contact that is assembled in the contactor base, bridge type contact, push rod, touch spring, reaction spring.
Described big excess of stroke normally closed interlock adopts the auxiliary normally closed interlock of contactor.
Described big excess of stroke normally closed interlock adopts the normally closed interlock near switch.
Described big excess of stroke normally closed interlock adopts the normally closed interlock of tongue tube.
Described big excess of stroke normally closed interlock adopts the normally closed interlock of travel switch.
Advantage and good effect that the present invention has are: because the present invention adopts big excess of stroke normally closed interlock in the wide voltage power supply assembly that improved and base become one as control switch, the automatic conversioning controling circuit of control connection power input and coil, structurally no longer need enough remaining spaces wide voltage power supply assembly is installed, so the wide voltage power supply that former energy-conservation contactor has is reliable except that keeping, energy-saving effect is preferably the advantage, it compared with similar products, Circuit Design is reasonable, simple in structure, cost is lower, and volume is less.Big excess of stroke normally closed interlock is when coil starts, the whole voltages of AC power that have built-in excess voltage suppressor are given rectification circuit and coil by it, guarantee that coil normally starts in DC circuit, electromagnet can not make sound, and coil temperature rise is low can not burn because of overheated.Because of contactor in attracting process, big excess of stroke normally closed interlock disconnects before and after main contact is just closed, gives rectification circuit and coil after AC supply voltage is reduced by energy-conservation capacitor C 2 and current-limiting resistance R2, so the minimizing magnetic system keeps required too much magnetic potential.Because the present invention adopts the interchange full voltage starting, be automatically converted to DC low-voltage by big excess of stroke normally closed interlock before startup is finished and keep, realize exchanging capacitive reactance and do not have the power consumption step-down, the little power consumption of dc low-voltage keeps, when control coil electric voltage dropping to 70%, contactor also can operate as normal, adhesive can not occur shaking, network voltage expanded to 130% o'clock, coil can not burn, thus safe in utilization, both reached purpose of energy saving, significantly improve the serviceability of contactor again, the work of electromagnet noiseless.Therefore, the coil working voltage range can reach 70% ~ 130%.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is a kind of concrete structure schematic diagram of the present invention;
Fig. 2 is the end view of Fig. 1;
Fig. 3 is a coil AC control circuit schematic diagram;
Fig. 4 is a coil DC control circuit schematic diagram.
Sequence number explanation among the figure: 1 base, 2 connecting lines, 3 resistance R, 1,4 capacitor C, 1,5 terminal blocks, 6 coils, 7 cover plates, 8 push rods, 9 fixed contacts, 10 bridge type contacts, 11 touch springs, 12 reaction springs, 13 diode D1 ~ D4,14 current-limiting resistance R2,15 energy-conservation capacitor C 2,16 wiring boards, piezo-resistance RV, protection diode D5, sustained diode 6.
Embodiment
Describe concrete structure of the present invention in detail according to Fig. 1～4.This contactor coil control device comprises the wide voltage power supply assembly that becomes one with base 1 that is assembled in the contactor base end and is positioned at winding wiring terminal below (not shown).Because of this wide voltage power supply assembly and base 1 become one, so and " a kind of energy-saving contactor " obvious distinguish be, no longer need enough remaining spaces and install, it comprises big excess of stroke normally closed interlock and wiring board 16.Wherein big excess of stroke normally closed interlock can be according to actual needs with may select.Present embodiment forms by the common structure installation mainly by parts such as the fixed contact 9 that is assembled in contactor base 1, bridge type contact 10, push rod 8, touch spring 11, reaction springs 12.Can adopt the auxiliary normally closed interlock of contactor to substitute above-mentioned big excess of stroke normally closed interlock in actual the use through transforming; Also can adopt normally closed interlock to substitute near switch; Or adopt the normally closed interlock of tongue tube to substitute; Or adopt the normally closed interlock of travel switch to substitute.The automatic conversioning controling circuit that is connected power input and coil 6 by big excess of stroke normally closed interlock as control switch CT is set on wiring board 16.This automatic conversioning controling circuit is made of AC control circuit (as shown in Figure 3) and DC control circuit (as shown in Figure 4).Wherein AC control circuit comprises the built-in excess voltage suppressor Y1 that is made of capacitor C 1 and resistance R 1 that is connected ac power input end, by big excess of stroke normally closed interlock as control switch CT by diode 13 (circuit that the bridge rectifier of D1 ~ D4) form and coil 6 connect into, by the energy-conservation capacitor C 2 of series connection and current-limiting resistance R2 by the diode 13 (circuit that the bridge rectifier of D1 ~ D4) form and coil 6 connect into.Coil 6 in the DC control circuit is divided into hold-in winding BX and actuating coil QX.This circuit comprises the piezo-resistance RV that is connected dc supply input, the coil freewheeling circuit of forming by diode D5, D6, the circuit that connects into as control switch CT and actuating coil QX by big excess of stroke normally closed interlock, the circuit that connects into by current-limiting resistance R2 and hold-in winding BX serial connection back and actuating coil QX.
The AC control circuit course of work is as follows: control switch CT is at coil 6(XQ) when starting, the whole voltages of AC power flow to bridge rectifier by it, and (D1 ~ D4) and coil 6 guarantee that coil 6 normally starts.Contactor is in attracting process, when main contact has just wanted closed, armature washer (not shown) disconnects control switch CT, make AC power pass through energy-conservation electric capacity 15 (C2), current-limiting resistance 14 (R2) reduction voltage, (D1 ~ D4) and coil 6 reduce magnetic system and keep required too much magnetic potential to give bridge rectifier.Above-mentioned current-limiting resistance 14 (R2) should adopt metalfilmresistor, and its resistance value is suitably chosen.Energy-conservation electric capacity 15 (C2) should be selected ac capacitor for use, adopts the energy-conservation electric capacity of AC275V (supply voltage 220V) or two energy-conservation capacitances in series of AC275V (supply voltage 380V).
The DC control circuit course of work is as follows: when control switch CT started at coil 6, the whole voltages of DC power supply flowed to actuating coil QX by it, guarantee that actuating coil QX normally starts.Contactor is in attracting process, and when main contact had just wanted closed, the armature washer disconnected control switch CT, and DC power supply voltage is given hold-in winding BX and actuating coil QX after reducing voltage by current-limiting resistance 14 (R2).The startup of coil 6 is to reduce power consumption with the all-in resistance that current-limiting resistance R2 and hold-in winding BX connect, and realizes energy-conservation.Above-mentioned current-limiting resistance R2 should select metalfilmresistor for use, and its resistance value can be several Europe to tens kilo-ohm with coil voltage.
Claims (7)
1. contactor coil control device, comprise the wide voltage power supply assembly that is assembled in the contactor base end and is positioned at winding wiring terminal below, it is characterized in that: the described wide voltage power supply assembly that becomes one with base comprises big excess of stroke normally closed interlock and wiring board, and the automatic conversioning controling circuit that is connected power input and coil by described big excess of stroke normally closed interlock as control switch is set on described wiring board; Described automatic conversioning controling circuit is made of AC control circuit and DC control circuit, described AC control circuit comprises the built-in excess voltage suppressor that is made of capacitor C 1 and resistance R 1 that is connected ac power input end, the circuit that connects into by bridge rectifier and described coil by described big excess of stroke normally closed interlock, the circuit that connects into by bridge rectifier and coil by the energy-conservation capacitor C 2 and the current-limiting resistance R2 of series connection; Described DC control circuit comprises the piezo-resistance that is connected dc supply input, the coil freewheeling circuit of forming by diode D5, D6, circuit by the actuating coil QX in described big excess of stroke normally closed interlock and the described coil connects into is connected in series the circuit that the actuating coil QX in back and the described coil connects into by the hold-in winding BX in current-limiting resistance R2 and the described coil.
2. contactor coil control device according to claim 1 is characterized in that: described current-limiting resistance R2 is a metalfilmresistor, and described energy-conservation capacitor C 2 adopts the AC275V AC capacitor or adopts two AC275V AC capacitor series connection.
3. contactor coil control device according to claim 1 is characterized in that: described big excess of stroke normally closed interlock is made up of the fixed contact that is assembled in the contactor base, bridge type contact, push rod, touch spring, reaction spring.
4. contactor coil control device according to claim 1 is characterized in that: described big excess of stroke normally closed interlock adopts the auxiliary normally closed interlock of contactor.
5. contactor coil control device according to claim 1 is characterized in that: described big excess of stroke normally closed interlock adopts the normally closed interlock near switch.
6. contactor coil control device according to claim 1 is characterized in that: described big excess of stroke normally closed interlock adopts the normally closed interlock of tongue tube.
7. contactor coil control device according to claim 1 is characterized in that: described big excess of stroke normally closed interlock adopts the normally closed interlock of travel switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100039421A CN102262978A (en) | 2011-01-11 | 2011-01-11 | Control device for contactor coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100039421A CN102262978A (en) | 2011-01-11 | 2011-01-11 | Control device for contactor coil |
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| Publication Number | Publication Date |
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| CN102262978A true CN102262978A (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100039421A Pending CN102262978A (en) | 2011-01-11 | 2011-01-11 | Control device for contactor coil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553291A (en) * | 2015-12-08 | 2016-05-04 | 宁波市镇海华泰电器厂 | Power-saving AC contactor for AC-DC conversion |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86205784U (en) * | 1986-08-12 | 1987-04-01 | 宁从志 | Silver saving electromagnetic contactor with bi-bridge type contact |
| CN2482737Y (en) * | 2001-07-17 | 2002-03-20 | 刘勇 | Energy-saving contactor |
| CN2901562Y (en) * | 2006-04-10 | 2007-05-16 | 淄博卓尔电器有限公司 | Leakage comprehensive protector with auxiliary contact |
| GB2471132A (en) * | 2009-06-19 | 2010-12-22 | Lite Puter Entpr Co Ltd | Sine wave light modulation |
| CN202003916U (en) * | 2011-01-11 | 2011-10-05 | 沈阳二一三控制电器制造有限公司 | Coil control device of contactor |
-
2011
- 2011-01-11 CN CN2011100039421A patent/CN102262978A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86205784U (en) * | 1986-08-12 | 1987-04-01 | 宁从志 | Silver saving electromagnetic contactor with bi-bridge type contact |
| CN2482737Y (en) * | 2001-07-17 | 2002-03-20 | 刘勇 | Energy-saving contactor |
| CN2901562Y (en) * | 2006-04-10 | 2007-05-16 | 淄博卓尔电器有限公司 | Leakage comprehensive protector with auxiliary contact |
| GB2471132A (en) * | 2009-06-19 | 2010-12-22 | Lite Puter Entpr Co Ltd | Sine wave light modulation |
| CN202003916U (en) * | 2011-01-11 | 2011-10-05 | 沈阳二一三控制电器制造有限公司 | Coil control device of contactor |
Non-Patent Citations (1)
| Title |
|---|
| 薄春辉等: "整流器直流侧保护电路的分析与计算", 《机械设计与制造》, no. 3, 30 June 2001 (2001-06-30), pages 39 - 40 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553291A (en) * | 2015-12-08 | 2016-05-04 | 宁波市镇海华泰电器厂 | Power-saving AC contactor for AC-DC conversion |
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Application publication date: 20111130 |