CN2155615Y - Solid-state current-converting power economizer - Google Patents

Abstract

The utility model relates to an electricity-saving device of an electromagnet, which carries out retention by alternating current. The utility model is characterized in that the utility model is a six-end electronic assembly; in the assembly, an alternating current circuit converts the alternating current into full wave direct current and decreases voltage so that the electromagnet can be attracted. A rectification bridge is composed of diodes VD1-VD4, and an alternating current electromagnet coil, a resistor R1 and an automatic switch KM are connected in series. The automatic switch, an electronic current limiter, a retention and protection circuit, and a freewheeling circuit are matched, so that the alternating current electromagnet can save electricity and maintain attraction under half-wave direct current, the electricity can be saved by more than 85%, and meanwhile, the noise and the jitter of the original alternating current electromagnet can be eliminated.

Description

Solid-state current-converting power economizer

The utility model relates to a kind of battery saving arrangement with the electromagnet that exchanges sticking, is a kind of solid-state electricity-saving appliance, and it is specially adapted to the economize on electricity silent running of electromagnet in the A.C. contactor.

" the direct current silent power-saving operation of alternating electromagnet " literary composition that " electric generation Jie " 5 phases in 1993 deliver, be to start alternating electromagnet with halfwave rectifier, big electric capacity accumulation of energy, with the transformer step-down, make alternating electromagnet keep adhesive through halfwave rectifier, big electric capacity accumulation of energy, its disadvantage is that volume is big, cost is high.

In view of the above-mentioned shortcoming that prior art exists, the purpose of this utility model is to provide a kind of solid-state unsteady flow electricity-saving appliance, adopts diode VD ₁～VD ₄Bridge rectifier, resistance R ₁Step-down and automatic switch KM match, and alternating electromagnet is started under the full-wave direct current step-down; Use resistance R ₂, voltage-stabiliser tube VW ₁～VW _n, diode VD ₅, VD ₆, automatic switch KM matches, and makes alternating electromagnet keep adhesive under the half-wave current limliting.Its advantage is that volume is little, and cost is lower.

Below in conjunction with accompanying drawing the utility model is further narrated:

Fig. 1 is an external form schematic diagram of the present utility model.I ₁, I ₂, be input, O ₁, O ₂Be output, A ₁, A ₂It is the end that automaticallyes switch.

Fig. 2 is the utility model theory diagram.Being made up of convertor circuit, electronic current limiter, sticking and protective circuit, freewheeling circuit, among the figure, electromagnet coil, automatic switch, is external.

Fig. 3 is used for the line map of the electromagnet of A.C. contactor for the utility model.Among the figure, VD ₁～VD ₄Rectifier bridge constitutes convertor circuit, resistance R ₁Constitute reduction voltage circuit, resistance R ₂, voltage-stabiliser tube VW ₁～VW _nConstitute electronic current limiter, diode VD ₆Constitute sticking and cry road, diode VD with protection ₅Constitute freewheeling circuit.KM is A.C. contactor, its auxiliary normally closed contact KM automatic switch as this device.

Fig. 4 is the winding diagram of the utility model economize on electricity noise elimination embodiment.GBJ-I is a model of the present utility model, L ₁, L ₂, L ₃Be power frequency 380V three phase mains inlet wire, KM is a contactor, and KH is thermal relay, SB ₁Be to stop knob, SB ₂Be that startup knob, M are threephase motors.Among the figure A.C. contactor KM be in order to the operation of control threephase motor M with stop.

When starting knob SB ₂Press, power frequency 380V power supply is added to the input I of this device ₁, I ₂, through VD ₁～VD ₄Bridge rectifier, resistance R ₁Step-down through the normally closed auxiliary contact of KM, makes KM get electronic work under the full-wave direct current step-down, and the motor M operation at this moment, is often opened the closed self-insurance of auxiliary contact KM, and normally closed auxiliary contact KM disconnects, and electric current is through VD ₁, KM, R ₁, R ₂, VW ₁～VW _n, VD ₆Make contactor KM keep adhesive under the half-wave DC current limliting, motor continues operation.VD among the figure ₆Guaranteed contactor KM sticking under half-wave DC, and protection voltage-stabiliser tube VW ₁～VW _nCan not be in the forward conduction state.

Compared with the prior art, it is little to the utlity model has volume, lower-cost characteristics.

Description of drawings:

Fig. 1 is an external form schematic diagram of the present utility model.

Fig. 2 is a theory diagram of the present utility model.

Fig. 3 is a line map of the present utility model.

Fig. 4 is the winding diagram of the utility model embodiment.

Embodiment: if exchange the model CJ20-100 of contact KM among Fig. 4, then among Fig. 2, VD ₁～VD ₆Be LM207, R ₁Get 200 Ω, R ₂Get 10K Ω, voltage-stabiliser tube is got 6, and model is 4754, and economize on electricity reaches 85.2%.

Claims (1)

1, a kind of solid-state unsteady flow electricity-saving appliance is characterized in that:

A. by diode VD ₁～VD ₄Rectifier bridge, the resistance R formed ₁, automatic switch KM starts alternating electromagnet under the full-wave direct current step-down, wherein alternating electromagnetic iron coil, resistance R ₁, automatic switch KM is in series;

B. by resistance R ₂, voltage-stabiliser tube VW ₁～VW _n, diode VD ₆Constitute half-wave DC electronic current limiter, diode VD after being in series ₅Be connected in parallel on the two ends of alternating electromagnetic iron coil, make it alternating electromagnet and under half-wave DC, economize on electricity and keep adhesive.

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