CN2094792U

CN2094792U - Low temp. in creasing high-efficient energy-saving dynmaic electricmagnetic driver

Info

Publication number: CN2094792U
Application number: CN 90215388
Authority: CN
Inventors: 沈正; 沈磊; 沈锦仁
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-10-19
Filing date: 1990-10-19
Publication date: 1992-01-29

Abstract

The utility model discloses a low temperature increasing high-efficiency energy-saving dynamic electromagnetic driver which can be applied in electric devices with electromagnet components. The low temperature increasing high-efficiency energy-saving dynamic electromagnetic driver is composed of a quick-recovery non-contact automatic time rheostat and an oscillator whose duty ratio is control by the automatic time rheostat. The ratio of the starting current and the steady state current can be regulated; while the current being supplied for an electric magnet achieves the reliable operating value of the drive electric magnet before and after an armature is attracted. The consumed electric energy is only one eighth of the prior art, and the temperature increase of the wire package is greatly descended.

Description

Low temp. in creasing high-efficient energy-saving dynmaic electricmagnetic driver

The utility model includes the dynamic electromagnetic driver in the electric equipment of electromagnet assembly, and this dynamic electromagnetic driver can be widely used in the electromagnetically operated valve of electromagnet as assembly.Pilot solenoid valve, A.C. contactor etc.

The electromagnet of present industrial application is electromagnetic driver dynamically, electromagnet divides two kinds, a kind of is alternating electromagnet, another kind is a DC electromagnet, its type of drive is direct-type, with the electromagnetic wire bag directly with exchange or the break-make of DC power supply is controlled, though the steady-state current for alternating electromagnet after the armature adhesive reduces than starting drive current, but it is still bigger after slow loss of copper loss magnetic and eddy current loss add up, efficient is not high, and for DC electromagnet, the position of armature and drive circuit electric current are irrelevant, electric current initial value when almost still keeping electromagnet to begin to inhale after the armature adhesive, suction has big superfluous, and the energy of switching on this moment is considerably beyond guaranteeing reliable operating value, and its copper loss is very big, maximum temperature-rise and heat dissipation are difficult to reduce, and are not suitable for the use of explosion-proof occasion.

The purpose of this utility model provides a kind of armature and inhales when moving, the variation that its electric current is all descending, the ratio of starting current and steady-state current can be adjusted, and before supply current of electromagnet and the armature adhesive and after the adhesive, all can reach reliable operating value in the drive magnet overall process, avoid passing through big electric current for a long time in stable state, overcome the shortcoming of stable state suction surplus, the dynamic electromagnetic driver of energy-conservation motion is imitated in a kind of low temperature rise that can effectively reduce temperature rise.

For finishing the technical scheme that above-mentioned purpose is taked: complete machine is by the contactless automatic time rheostat of fast quick-recovery, the oscillator of duty ratio controlled change, promoting output stage and driven iron core solenoid and power supply forms, use DC power supply, but the friendship of being controlled by the time that on the electromagnet winding, presents, the compound component of direct current, initial drive current and the time that is subjected to of steady-state current are then controlled, the each suction when moving, all descending variation, the ratio of starting current and steady-state current can be adjusted, generally can reach 5:1, even 7:1, make supply with current of electromagnet before the armature adhesive and after, all can reach reliable operating value in the driving elevator iron overall process, avoid the excessive for a long time suction residue of stable state, reach effective reduction temperature rise.

The utility model embodiment is described in detail in conjunction with the accompanying drawings.

Fig. 1 is the utility model circuit diagram.

According to shown in Figure 1, complete machine is by the contactless automatic time rheostat 1 of fast quick-recovery, the oscillator 2 of duty ratio controlled change, promoting output stage 3 and driven iron core solenoid W and power supply E forms, automatic time rheostat 1 is by capacitor C 1, diode D2 and resistance R 1 are composed in series a repid discharge loop, by resistance R 7 and voltage-stabiliser tube D1 series connection, current supply circuit before forming, be connected to the grid G of field effect transistor T1 by the tie point of capacitor C 1 negative pole and R2, the source S of field effect transistor T1 and drain D are as the rheostatic output of contactless automatic time, connect and the control next stage, the duty ratio controlled change device that shakes is used 7555 type CMOS time-base integrated circuit IC, among IC 1 and 8 pin join with the positive and negative of diode D1 respectively, and 7 and 2 pin join with the positive and negative of D4 respectively, 6 and 7 pin and resistance R 3 parallel connections, 2 and 6 pin join with D3 is positive and negative respectively, 1 and 2 pin are in parallel with C2, and 8 and 7 pin are in parallel with R4, and extremely link to each other with S with the D utmost point of the rheostatic field effect transistor T1 of higher level's automatic time.Promoting output stage 3 is made up of resistance R 5～R6 diode D5, triode T2～T4.

The utility model uses on a kind of Explosion-proof valve, only consumes 5 watts of average powers, just reaches the original 40 watts of electric energy import electromagnet roles of consumption that need, and the temperature rise of line bag descends significantly.

Claims

1, a kind ofly imitates energy-conservation dynamic electromagnetic driver by electromagnet, solenoid, switch, power supply, the low temperature rise formed, it is characterized in that complete machine by the oscillator 2 of the contactless automatic time rheostat 1 of fast quick-recovery, duty ratio controlled change, promote output stage 3 and driven iron core electromagnetism shallow circle W and power supply E and form, a, contactless automatic time rheostat 1 are made up of voltage-stabiliser tube D1 and diode D2, field effect transistor D1, resistance R 1, R2 and capacitor C 1; B, duty ratio controlled change oscillator 2 are made up of diode D3～D4, time-base integrated circuit ICM7555, resistance R 3～R4 and R7, capacitor C 2; C, promotion output stage 3 are made up of resistance R 5～R6, diode D5, triode T2～T4.