CN203931944U

CN203931944U - A kind of energy-saving appliance of A.C. contactor

Info

Publication number: CN203931944U
Application number: CN201420342457.6U
Authority: CN
Inventors: 黄晓明
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-06-24
Filing date: 2014-06-24
Publication date: 2014-11-05
Anticipated expiration: 2024-06-24

Abstract

The utility model relates to alternating-current contactor energy-saving control technology field, especially a kind of energy-saving appliance of A.C. contactor.It comprises controller and input interface; Input interface is divided into three tunnels after connecting rectifier diode: the first via is directly connected with the input port of A.C. contactor, the second tunnel connects controller by dropping resistor power input interface, Third Road are connected the grounding ports of controller and are passed through the square-wave signal input port that the first divider resistance connects controller by first divider resistance of connecting successively with the second divider resistance; The second divider resistance is parallel with the 3rd voltage stabilizing didoe, between the grounding ports of controller and output port of power source, be parallel with respectively the 4th voltage stabilizing didoe, the first filter capacitor and the 3rd filter capacitor, the output port of controller connect successively the 6th resistance and the 5th voltage stabilizing didoe.The power consumption that the utility model circuit structure is simple, can reduce A.C. contactor, has very strong practicality.

Description

A kind of energy-saving appliance of A.C. contactor

Technical field

The utility model relates to alternating-current contactor energy-saving control technology field, especially a kind of energy-saving appliance of A.C. contactor.

Background technology

A.C. contactor is common a kind of electric equipment during modern industry is produced, and its operation principle is to utilize coil to flow through alternating current to produce magnetic field, makes contact closure, to reach the object of controlling large current load work; And it is known according to the operation principle of A.C. contactor, when the state of A.C. contactor in sticking, alternating current can consume certain energy consumption by the coil of A.C. contactor, thereby the improvement of the power-saving technology of A.C. contactor has very large economic benefit and social benefit.

At present, on market, in esse alternating-current contactor energy-saving operating scheme is a lot, but the popularization face of power-saving technology is smaller, and popularity rate is not high.The main cause that occurs this situation has: the technical ability attachment device having will take or adjust the auxiliary contact of contactor; Some energy-saving schemes are perfect not enough, may reduce functional reliability, performance index and the useful life of A.C. contactor.

Utility model content

The deficiency existing for above-mentioned prior art, the purpose of this utility model is to provide that a kind of volume is little, cost is low, the energy-saving appliance of the significant A.C. contactor of energy-saving effect.

To achieve these goals, the utility model adopts following technical scheme:

An energy-saving appliance for A.C. contactor, the first input interface and the second input interface that it comprises controller and is connected in the two ends of 220V AC power; After connecting rectifier diode, described the first input interface is divided into three tunnels: the first via is directly connected with the input port of A.C. contactor, the second tunnel connects controller by dropping resistor power input interface, Third Road are connected the grounding ports of controller and are passed through the square-wave signal input port that the first divider resistance connects controller by first divider resistance of connecting successively with the second divider resistance;

Described the second divider resistance is parallel with the 3rd voltage stabilizing didoe, between the grounding ports of described controller and output port of power source, be parallel with respectively the 4th voltage stabilizing didoe, the first filter capacitor and the 3rd filter capacitor, between the grounding ports of described controller and reference voltage port, be connected with the 5th resistance, the output port of described controller is connected with the input port of A.C. contactor with the 5th voltage stabilizing didoe by the 6th resistance of connecting successively;

It also comprises the 4th resistance, the second filter capacitor and is parallel to the second voltage stabilizing didoe of the input port of A.C. contactor, is connected in parallel on the two ends of the 5th voltage stabilizing didoe after described the 4th resistance and the series connection of the second filter capacitor.

Preferably, described controller comprises the reference circuit that is connected with reference voltage port, is connected in the power circuit between power input interface and grounding ports, the signal synthesis circuit that is directly connected and is connected with square-wave signal input port by pulse width regulating circuit simultaneously with square-wave signal input port;

Described signal synthesis circuit also connects the output port of controller by output buffer, described signal synthesis circuit is also connected with electrify restoration circuit by delay circuit.

Owing to having adopted such scheme, the utility model can be realized by changing the width of the output pulse of controller the power consumption control of A.C. contactor, in the adhesive stage, output pulse by regulation and control controller is that broad pulse obtains the high moving voltage of inhaling, thereby make the safe and reliable adhesive of A.C. contactor, after adhesive, energy-saving appliance is the burst pulse that is enough to maintain adhesive by output pulses switch again, thereby the low-voltage of maintaining, to reach energy-conservation object; Its circuit structure is simple, has very strong practicality.

Accompanying drawing explanation

Fig. 1 is the circuit structure diagram of the utility model embodiment;

Fig. 2 is the working waveform figure of Fig. 1;

Fig. 3 is the theory diagram of the controller of the utility model embodiment.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.

As shown in Figure 1 to Figure 3, the energy-saving appliance of the A.C. contactor of the present embodiment, the first input interface AC1 and the second input interface AC2 that it comprises controller Q and is connected in the two ends of 220V AC power; The first input interface AC1 is divided into three tunnels after connecting rectifier diode D1: the first via is directly connected with the input port of A.C. contactor, the second tunnel connects controller Q by dropping resistor R1 power input interface, Third Road are connected the grounding ports of controller Q and are passed through the square-wave signal input port that the first divider resistance R2 connects controller Q by the first divider resistance R2 that connects successively with the second divider resistance R3; Simultaneously, the second divider resistance R3 is also parallel with the 3rd voltage stabilizing didoe D3, between the grounding ports of controller Q and output port of power source, be parallel with respectively the 4th voltage stabilizing didoe D4, the first filter capacitor C1 and the 3rd filter capacitor C3, between the grounding ports of controller Q and reference voltage port, be connected with the 5th resistance R 5, at the output port of controller Q, by the 6th resistance R 6 of connecting successively, be connected with the input port of A.C. contactor with the 5th voltage stabilizing didoe D5;

It also comprises the 4th resistance R 4, the second filter capacitor C2 and is parallel to the second voltage stabilizing didoe D2 of the input port of A.C. contactor; Wherein, after the 4th resistance R 4 and the second filter capacitor C2 series connection, be connected in parallel on the two ends of the 5th voltage stabilizing didoe D5.

So, can in conjunction with Fig. 2 illustrate the present embodiment the operation principle of energy-saving appliance, after 220V AC power is received between the first input interface AC1 and the second input interface AC2, alternating current carries out halfwave rectifier (after rectification the E point voltage of A.C. contactor one end can as shown in Figure 2) by rectifier diode D1.Voltage after rectification can be fixed the power frequency square-wave signal of cycle (as 20ms), fixed pulse width (as 10ms) after by the first divider resistance R2, the second divider resistance R3 and the 3rd voltage stabilizing didoe D3 dividing potential drop, this square-wave signal is input to the square-wave signal input port of controller Q.Meanwhile, the voltage after rectification passes through dropping resistor R1, the 4th voltage stabilizing didoe D4 and the first filter capacitor C1 and the 3rd filter capacitor C3 simultaneously and obtains a stable 5V supply voltage to power to controller Q; And after controller Q powers on, it can first export the fixed cycle power frequency square-wave signal of (20ms), fixed pulse width (10ms), now, due to the complete conducting of the 5th voltage stabilizing didoe D5, therefore, the DC power supply flowing through on A.C. contactor is very large, thereby makes the suction of iron core of contactor very large, and then can make fast A.C. contactor adhesive.When A.C. contactor powers on (as predetermined 130ms) after certain hour, can utilize the power frequency square-wave signal of controller Q output fixed cycle (20ms), fixed pulse width (as 1.5ms).Because the ON time of the 5th voltage stabilizing didoe D5 now becomes shorter, discharge time is longer, and when the output of controller Q is during in high level, the voltage that E point is corresponding is little, charging through the smaller pulse width time of duty, coil current can not increase much yet, current peak is a lower value, now the coil current Ij of A.C. contactor is in little current status, to maintain the closure of AC contactor touch head, because the electric current on coil is very little, therefore, the energy-saving appliance of the present embodiment has been realized the object that reduces A.C. contactor power consumption; Also reduced coil noise and the temperature rise of A.C. contactor, the main circuit of A.C. contactor has been had to defencive function, extended the useful life of A.C. contactor simultaneously.

In addition, as shown in Figure 3, the controller Q of the present embodiment can adopt energy-saving chip, and it comprises the reference circuit 1 that is connected with reference voltage port, is connected in the power circuit 2 between power input interface and grounding ports, the signal synthesis circuit 4 that is directly connected and is connected with square-wave signal input port by pulse width regulating circuit 3 simultaneously with square-wave signal input port; Signal synthesis circuit 4 also connects the output port of controller Q by output buffer 5, and signal synthesis circuit 4 is also connected with electrify restoration circuit 7 by delay circuit 6.With this, can make the internal circuit configuration of controller Q be divided into artificial circuit part and digital circuit part, that is: artificial circuit part mainly comprises power circuit 2, reference voltage circuit 1 and electrify restoration circuit 7, and digital circuit part mainly comprises delay circuit 6, pulse width regulating circuit 3, signal synthesis circuit 4 and output buffer 5; Artificial circuit part can make controller Q produce stable reference signal; Digital circuit part can make controller Q adjust square-wave signal.

The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims

1. an energy-saving appliance for A.C. contactor, is characterized in that: the first input interface and the second input interface that it comprises controller and is connected in the two ends of 220V AC power; After connecting rectifier diode, described the first input interface is divided into three tunnels: the first via is directly connected with the input port of A.C. contactor, the second tunnel connects controller by dropping resistor power input interface, Third Road are connected the grounding ports of controller and are passed through the square-wave signal input port that the first divider resistance connects controller by first divider resistance of connecting successively with the second divider resistance;

2. the energy-saving appliance of a kind of A.C. contactor as claimed in claim 1, is characterized in that: described controller comprises the reference circuit that is connected with reference voltage port, is connected in the power circuit between power input interface and grounding ports, the signal synthesis circuit that is directly connected and is connected with square-wave signal input port by pulse width regulating circuit simultaneously with square-wave signal input port;