CN201689828U

CN201689828U - Energy-saving alternating-current (AC) contactor

Info

Publication number: CN201689828U
Application number: CN2010201559373U
Authority: CN
Inventors: 张洪彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-07
Filing date: 2010-04-07
Publication date: 2010-12-29
Anticipated expiration: 2020-04-07

Abstract

The utility model relates to an energy-saving alternating-current (AC) contactor which comprises a movable contact member, a fixed contact member, an electromagnetic coil and a base shell, and is characterized in that the movable contact member consists of a permanent magnetic element; soft magnetism penetrating through a middle frame of the electromagnetic coil is sparse; and therefore, the direction of current flowing through the electromagnetic coil can be controlled by controlling the conduction of a silicon controlled thysistor in a unit formed by parallel connection of the front or rear diode of the electromagnetic coil and the silicon controlled thysistor, thus controlling the N pole and the S pole of the soft magnetism in the middle frame of the electromagnetic coil, and further being capable of realizing sucking or pushing the movable contact member comprising the permanent magnetic element so as to control the connection and disconnection statuses of the contactor and realize that the electromagnetic coil does not consume electricity when the contactor is in sucking. The connection and disconnection of the electromagnetic coil can be controlled by the silicon controlled thysistor, so that the zero passage disconnection of the electromagnetic coil can also be realized, the reverse electromotive force generated by the electromagnetic coil can be avoided, and the action of the contactor is stable. In addition, due to the adoption of permanent magnetic sucking, the magnetic force is stronger, and the power of the electromagnetic coil can be properly reduced, thus being capable of reducing the using amount of copper wires and soft magnetic materials and further being energy-saving as well as stable in action.

Description

A kind of energy saving ac contactor

Affiliated technical field

The utility model relates to a kind of contactor, particularly a kind of energy saving ac contactor.

Background technology

At present, the power consumption of general A.C. contactor is bigger, and in service have an electromagnetic noise.Be to reduce energy consumption and noise, once carried out a large amount of research both at home and abroad, existing technology row can be divided into: keep current mode, 2. mechanical lock button-type, 3. micro electro mechanical snap close type, 4. permanent magnetism absorbent-type less 1..Wherein current mode is kept in minimizing will the support circuit more complicated, promotes relatively poor; The mechanical lock button-type has lost the basic function that the contactor outage discharges, and contains unsafe factor, and range of application is very limited; Micro electro mechanical snap close type is good than the former two, but complicated, promotes undesirable; Existing permanent magnetism adhesive type is more complicated and less stable substantially all, how not to promote substantially.

Summary of the invention

Bigger in order to overcome existing A.C. contactor power consumption, the shortcoming that electromagnetic noise is arranged in service the invention provides a kind of energy saving ac contactor, and its electricity consumption is few, does not have electromagnetic noise substantially.

The technical scheme that its technical problem that solves the utility model adopts is: dynamic and static contact members, and solenoid, base shell is formed energy saving ac contactor.It is characterized in that: the moving contact member comprises permanent magnet component; The soft magnetism that passes the solenoid center is sparse; Perhaps there is the surface of individual direction greater than soft magnetism spare on the surface of permanent-magnet pieces contact position; All there is controllable silicon at solenoid two.Like this, silicon controlled conducting in the unit before or after the control solenoid after diode and the controllable silicon parallel connection, the sense of current of just can control flows crossing solenoid, thereby N, the S utmost point of the soft magnetism of control solenoid center, also just can realize adhesive or push away the moving contact member that contains permanent magnet component, thereby the on off operating mode of control contactor, and realize contactor not power consumption of solenoid when adhesive.By the break-make of SCR control solenoid, can also realize that the solenoid zero passage disconnects, avoid solenoid to produce inverse electromotive force, thereby reduce infringement other elements, make the contactor action more stable.Owing to adopt the permanent magnetism adhesive, magnetic force is stronger, can suitably reduce the power of solenoid simultaneously, therefore can reduce the consumption of copper cash and soft magnetic material.

The beneficial effects of the utility model are: not power consumption of solenoid during adhesive, and energy-conservation; Can save copper cash and soft magnetic material, and action is stable; No electromagnetic noise.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the schematic diagram of first embodiment of the utility model.

Fig. 2 is the control circuit schematic diagram of first embodiment of the utility model.

Among the figure, 1. normally closed interlock, 2. moving contact, 3. spring, 4. solenoid, 5. permanent-magnet pieces, 6. soft magnetism spare, 7. normally open contact, 8. base shell, 9. control circuit, 10. diode 1,11.

controllable silicon

1,12.

photosensitive tube

1,13.

photosensitive tube

2,14.

controllable silicons

2,15.

diodes

2,16, piezo-resistance.

Embodiment

Among Fig. 1, Fig. 2, energy saving ac contactor is by dynamic and static contact members, solenoid, and base shell is formed.Wherein the fixed contact member comprises normally closed interlock (1), normally open contact (7); The moving contact member comprises moving contact (2) and permanent-magnet pieces (5); Solenoid (4) and soft magnetism spare (6) are formed electromagnetic circuit; Push away the moving contact member, must there be the surface of individual direction greater than soft magnetism spare (6) on the surface of permanent-magnet pieces during adhesive (5) contact position, and perhaps the surface, contact position of soft magnetism spare (6) is sparse.Adopted permanent magnetic material simultaneously, the magnetic force that electromagnetic circuit produces can the little of more common contactor can both be effective, thereby can save copper cash and soft magnetic material.And adopting permanent-magnet pieces (5) adhesive soft magnetism spare (6), solenoid after the adhesive (4) need not be switched on and all can be kept, and has saved electric energy.And the adhesive of contactor or push away the sense of current decision of crossing solenoid (4) by control circuit (9) control flows.If the magnetic field adhesive moving contact member that control controllable silicon 1 (11) conducting solenoid (4) produces, then the magnetic field of controllable silicon 2 (14) conducting solenoids (4) generation will push away the moving contact member.Rayed photosensitive tube 1 (12) just can trigger controllable silicon 1 (11), allows electric current pass through diode 2 (15), solenoid (4), controllable silicon 1 (11), thereby the magnetic field adhesive moving contact member that solenoid (4) is produced is connected normally open contact (7) two ends.Rayed photosensitive tube 2 (13) just can trigger controllable silicon 2 (14), allows electric current pass through diode 1 (10), solenoid (4), controllable silicon 2 (14), thereby the magnetic field that solenoid (4) is produced pushes away the moving contact member, and normally closed interlock (1) two ends are connected.Be characterized in: diode 2 (15) and controllable silicon 2 (14) compose in parallel ballast unit series electrical magnetic coil (4) unit that composes in parallel of order serial connection controllable silicon 1 (11) and diode 1 (10) again.Easily control flows is crossed the sense of current of solenoid (4).Wherein control circuit can be arranged to interlocking with the drive circuit of two photosensitive tubes of irradiation, just can easily control the adhesive of A.C. contactor or pushes away.Because not having reverse Control current, controllable silicon is that zero passage disconnects certainly, so solenoid (4) can not produce inverse electromotive force as the solenoid of common contactor, other elements is exerted an influence; Make the contactor action more stable.Vibrations for fear of the moving contact member simultaneously make solenoid (4) generation induced electromotive force exert an influence to other elements, the piezo-resistance (16) in parallel at solenoid (4) two ends.

In addition, because controllable silicon can adopt photosensitive tube or optocoupler control, make this kind contactor can cooperate the numeric type output interface of various automatic controls easily.

Claims

1. an energy saving ac contactor is by dynamic and static contact members, solenoid, and base shell is formed; It is characterized in that: the sequence of unit after the unit after diode and the controllable silicon parallel connection, solenoid, diode and the controllable silicon parallel connection is electrically connected.

2. the described energy saving ac contactor of claim 1, it is characterized in that: the moving contact member comprises permanent magnet component.

3. the described energy saving ac contactor of claim 1, it is characterized in that: the soft magnetism that passes the solenoid center is sparse.

4. the described energy saving ac contactor of claim 1, it is characterized in that: there is the surface of individual direction greater than soft magnetism spare on the surface of permanent-magnet pieces contact position.

5. the described energy saving ac contactor of claim 1, it is characterized in that: the solenoid two ends are parallel with piezo-resistance.