CN2129466Y

CN2129466Y - Micro power consumption energy saving ac contactor

Info

Publication number: CN2129466Y
Application number: CN 92218464
Authority: CN
Inventors: 洪自强
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-06
Filing date: 1992-08-06
Publication date: 1993-04-07
Anticipated expiration: 2002-08-06

Abstract

The utility model relates to an alternating current contactor which is provided with an upper magnetic yoke at the support plate of a contact. At least one pole shoe is arranged on the upper magnetic yoke. A lower magnetic yoke is arranged on a base plate. A corresponding position on the lower magnetic yoke is provided with at least one electromagnetic pole shoe on which an electromagnetic coil with two windings is sheathed. One winding is connected with a power source through a start button, a rectifying diode and a current-limiting resistor. The other winding is connected with a storage capacitor through the normal closed contact of a midget relay. The midget relay is connected with an auxiliary contact on a contact head of a main contact through a close button, the rectifying diode and the current-limiting resistor. The utility model has the advantages of simple structure, less power consumption and low noise.

Description

Micro power consumption energy saving ac contactor

The utility model relates to a kind of A.C. contactor.

At present, in the folding of far distance controlled electric power, or generally use common A.C. contactor in the partial-automatic control electric power automatically, it is made up of iron core, coil and main contacts etc., though it can control the folding of electric power, but it is more that this class A.C. contactor consumes energy at work, need approximately about power consumption 15W during as the common A.C. contactor operate as normal of 40A, and its noise is also bigger.

The purpose of this utility model is exactly in order to address the above problem, and a kind of little power consumption energy saving ac contactor is provided.

Technical solution of the present utility model:

A kind of little power consumption energy saving ac contactor, it includes main contacts Z, contact holder plate 1 and lower shoe 2, is connected with middle supporting plate 4 by four back-moving springs 3 around contact holder plate 1 lower surface, it is characterized in that:

A, be provided with a layer plane magnetic conductive soft iron sheet, constitute upper magnet yoke 5, be provided with a pole shoe 7 at least at the lower surface of upper magnet yoke 5 at contact holder plate 1 lower surface; Be provided with one deck soft iron sheet at lower shoe 2 upper surfaces, constitute lower yoke 6, be provided with an electromagnetism pole shoe 8 at lower yoke 6 upper surfaces at least corresponding to the position of the pole shoe 7 of upper magnet yoke 5, and be with two winding L on the electromagnetism pole shoe 8 ₁, L ₂Solenoid L;

B, AC power are by start button K ₁, rectifier diode D ₁With current-limiting resistance R ₁Connect the winding L of solenoid L ₁, another winding L of solenoid L ₂Normally-closed contact J by midget relay J ₁C is connected with storage capacitor; On the contact of main contacts Z, pass through auxiliary contact Z ₁With X button K ₂And rectifier diode D ₂, current-limiting resistance R ₂, R ₃Meet midget relay J, auxiliary contact Z ₁With X button K ₂And rectifier diode D ₂, current-limiting resistance R ₂Also pass through the normally opened contact J of midget relay J ₂Press storage capacitor C, constitute the charge circuit of storage capacitor C.

The utility model adopts soft magnetic material and permanent magnet material to replace the iron core part of existing A.C. contactor, had both kept function, the method for operation of existing A.C. contactor and custom is installed, and has saved the energy simultaneously again greatly, and it is simple in structure, in light weight, noiseless, power savings is remarkable.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is an electrical schematic diagram of the present utility model.

As Fig. 1, for strengthening magnetive attraction, the utility model is preferably in the upper magnet yoke 5 lower surface centers of contact holder plate 1 and establishes a center pole shoe 7, it can be soft iron material, also can be other steel, on upper magnet yoke 5 lower surfaces of center pole shoe 7 both sides, respectively establish the surface of a permanent magnetic iron block 9, two permanent magnetic iron blocks 9 and respectively establish a permanent magnet pole shoe 10 again, they are an integral body, and whole top constitutes a permanent magnet assembly; Be respectively equipped with center electromagnetism pole shoe 8 and two electromagnetism pole shoes 11 at lower yoke 6 upper surfaces of lower shoe 2 with respect to the position of center pole shoe 7 and two permanent magnet pole shoes 10, they can be soft magnetic material, center electromagnetism pole shoe 8 is positioned at the frame center hole of solenoid L, whole bottom is an integral body, constitutes electromagnet assembly.Be connected with contact holder plate 1 by four back-moving springs 3 around the supporting plate 4 in the middle of being set with in the upper end of two electromagnetism pole shoes 11, the upper surface of middle supporting plate 4, make the utility model at magnetive attraction maintenance certain distance in upper and lower part during less than elastic force.The utility model course of work such as Fig. 1,2 are when pressing start button K ₁The time, power supply is through rectifier diode D ₁, current-limiting resistance R ₁L to solenoid L ₁Winding provides direct current, the center electromagnetism pole shoe 8 on the lower yoke 6 and the electromagnetism pole shoe 11 of its both sides are produced and the opposite magnetic fields of permanent magnet assembly magnetic pole, top, so the elastic force that upper and lower two parts assembly overcomes back-moving spring 3 is pulled together, start working thereby main contacts Z of the present utility model is connected, unclamp start button K this moment ₁After, make upper and lower part of the present utility model constant by means of the magnetic attraction of permanent magnet assembly in the attracted position, guarantee its normal operating conditions, and the L of solenoid L ₁Winding is power consumption no longer.When the utility model is closed, press X button K earlier ₂, then on main contacts Z contact power supply is passed through its auxiliary contact Z ₁And rectifier diode D ₂, current-limiting resistance R ₂, R ₃Provide a direct current to midget relay J, make the relay J adhesive, its normally-closed contact J ₁Disconnect normally opened contact J ₂Closure is like this through rectifier diode D ₂, current-limiting resistance R ₂The direct current of sending here after storage capacitor C substitutes the bad for the good, unclamps X button K to storage capacitor C charging ₂, midget relay J dead electricity then, its normally-closed contact J ₁Closure, normally opened contact J ₂Disconnect, then storage capacitor C is to the L of solenoid L ₂The winding discharge, make the transient magnetic field that electromagnet assembly produced of the utility model bottom identical with the magnet polarity of top permanent magnet assembly, they repel each other, this mutual expelling force need not much, the difference that it only need be slightly larger than the elastic restoring force of the permanent magnetism power of top permanent magnet assembly and back-moving spring 3 gets final product, like this, mutual expelling force is offset permanent magnetism power, top permanent magnet assembly and bottom electromagnet assembly are thrown off under the effect of back-moving spring 3 and are resetted, reach the purpose that disconnects the utility model main contacts Z, it is quit work.The utility model is owing to lean on the magnetive attraction adhesive of permanent magnet when operate as normal, coil does not have electric current to pass through so economic electricity there is no a spot noise.

Claims

1, a kind of little power consumption energy saving ac contactor, it includes main contacts Z, contact holder plate 1 and lower shoe 2, is connected with middle supporting plate 4 by four back-moving springs 3 around contact holder plate 1 lower surface, it is characterized in that:

2, by the described little power consumption energy saving ac contactor of claim 1, it is characterized in that being preferably in upper magnet yoke 5 lower surface centers and establish a center pole shoe 7, on upper magnet yoke 5 lower surfaces of center pole shoe 7 both sides, respectively establish a permanent magnetic iron block 9, a permanent magnet pole shoe 10 is respectively established on the surface of two permanent magnetic iron blocks 9 again, they are an integral body, and whole top constitutes permanent magnet assembly; Be respectively equipped with center electromagnetism pole shoe 8 and two electromagnetism pole shoes 11 at lower yoke 6 upper surfaces of lower shoe 2 with respect to the position of center pole shoe 7 and two permanent magnet pole shoes 10, center electromagnetism pole shoe 8 is positioned at the frame center hole of solenoid L, whole bottom is an integral body, constitutes electromagnet assembly.

3, by the described little power consumption energy saving ac contactor of claim 2, it is characterized in that the upper end of two electromagnetism pole shoes 11 on lower yoke 6 is set with middle supporting plate 4, be connected with contact holder plate 1 by four back-moving springs 3 around the upper surface of middle supporting plate 4.