CN2407448Y

CN2407448Y - Noiseless A. C. contactor with low power consumption

Info

Publication number: CN2407448Y
Application number: CN 99230233
Authority: CN
Inventors: 陈其寿; 翟耀诚
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-09
Filing date: 1999-12-09
Publication date: 2000-11-22
Anticipated expiration: 2009-12-09

Abstract

The utility model relates to a noiseless AC contactor with low power consumption, which is provided with E-shaped iron cores; the middle parts of the E-shaped upper iron core and the E-shaped lower iron core are provided with an electromagnetic attraction coil; a movable suction plate is connected into integration with movable E-shaped iron cores; pole shoes can tightly suck the suction plate; the middle parts of the left and the right pole shoes are provided with a constant magnet, and the upper parts of the pole shoes are provided with a reverse magnetic coil which is connected with a capacitor releaser. The utility model has the advantages that the noiseless AC contactor with low power consumption is not affected by fluctuation of the network voltage, and service life of the electromagnetic attraction coil can be increased. Suction force of the magnetic field of the constant magnet can keep stable; the service life of movable and fixed contacts can be increased; the electromagnetic attraction coil does not need to be switched on, and the noiseless AC contactor with low power consumption has the advantages of electric energy saving, realization of the heatless and the noiseless operation, purified environment, and compact structure.

Description

Non-noise AC contactor with very-low energy consumption

The utility model relates to a kind of non-noise AC contactor with very-low energy consumption

The A.C. contactor of existing various series, because it adopts E type or U sections core to power up the contact power of magnetic zygonema circle start fixed contact, thereby as long as A.C. contactor work, the electromagnetism pull-in winding just has electric current to pass through, it must consume certain electric energy, and along with the difference of the big low capacity of A.C. contactor, its pull-in winding consumes energy from little several watts (VA) to several hectowatts (VA), so just there is the electric energy of hundreds of hundred million degree (during KVA/) every year in the whole nation by invisible slatterning, and can produce noise and thermal pollution environment.

The purpose of this utility model is the defective at above-mentioned existence, proposes a kind of non-noise AC contactor with very-low energy consumption.

Technical solution of the present utility model: include E type (or U type) iron core, centre at the upper and lower iron core 2,3 of E type (or U type) is provided with electromagnetism pull-in winding 4, movable suction disc 5 fuses with the upper and lower iron core 2,3 of movable E type (or U type), pole shoe 6 holds suction disc 5, establish permanent magnet 8 in the centre of left and right sides pole shoe 6, be provided with bucking coil 7 on the top of pole shoe 6, bucking coil 7 connects capacitor discharger 11, one side of electromagnetism pull-in winding 4 is established cut spring 9

Capacitor discharger 11 is by bridge rectifier 12, resistance R ₁, R ₂, R ₃, R ₄, R ₅, diode D ₅, capacitor C ₁, C ₂, C ₃, controllable silicon BG ₁Form, wherein the diode D in the bridge rectifier ₁Anode be to connect mains switch TA, QA, diode D ₁, D ₂Negative terminal be to connect resistance R ₁With diode D ₅Anode, the negative terminal of diode D5 connects the anode of capacitor C1 respectively, an end of bucking coil 7, another termination controllable silicon BG of bucking coil 7 ₁Anode, controllable silicon BG ₁Negative electrode and capacitor C ₁Negative terminal be connected capacitor C ₁Negative terminal and resistance R ₁, R ₂And capacitor C ₂Anode be connected capacitor C ₂Negative terminal respectively with resistance R ₂An end, diode D ₃, D ₄Anode, resistance R ₅An end join resistance R ₅Other end connecting resistance R ₃, R ₄, capacitor C ₃A termination controllable silicon BG ₁Trigger electrode, resistance R ₄, capacitor C ₃Another termination controllable silicon BG ₁Negative electrode, resistance R ₃Another termination controllable silicon BG ₁Anode.

Advantage of the present utility model:

(1) this A.C. contactor only needs instantaneous energising from being disconnected to connection working electromagnet pull-in winding, is not subjected to the influence of voltage ripple of power network, thereby has improved the useful life of electromagnetism pull-in winding.

(2) during this A.C. contactor operate as normal, the contact power of moving, fixed contact, suction from permanent magnet magnetic field, this tries hard to keep and holds the life-span that weighing apparatus helps improving moving fixed contact surely, the electromagnetism pull-in winding need not be switched on simultaneously, therefore save a large amount of electric energy, realized not having hot, noiseless, operation, environment purification.

(3) reduce inductive loads in the electrical network in a large number, thereby improved the power factor (PF) of power supply network.

(4) also possess the repertoire of existing A.C. contactor, and compact conformation, the longevity used

Life is long etc.

Accompanying drawing 1,2 is respectively structural representation of the present utility model, its cut-away view.10 is pedestals among the figure, the 1st, and the moving contact skeleton

Accompanying drawing 3 is electrical schematic diagrams of capacitor discharger.

Below in conjunction with accompanying drawing operation principle of the present utility model is described.

(1) press knob down switch QA power supply and lead to, electromagnetism pull-in winding 4 moments energising generation suction drive suction disc 5 moves downward by pole shoe 6 and sucks, release button switch QA, and A.C. contactor enters operating state, realizes no energy consumption, silent running.

By electrical schematic diagram electromagnetism pull-in winding 4 energisings as can be known, its auxiliary relay contact CJ _1-1By often open become normally closed, diode D ₁-D ₄Rectification, the rectified current electric current is by diode D ₅To capacitor C ₁, C ₂Charging, capacitor C ₂The negative pressure of last foundation effectively stops controllable silicon BG ₁Conducting.

(2) press down switch TA (power supply is disconnected) diode D ₁-D ₄Dead electricity does not have rectified current output capacitance C ₂Last dead electricity, controllable silicon BG simultaneously ₁Pass through resistance R ₃Obtain trigger voltage and be in conducting state, just by bucking coil 7 discharges, its discharging current produces and permanent magnet 8 opposite polarity magnetic fields capacitor C1, makes pole shoe 6 tops magnetic altogether, and suction disc 5 is released A.C. contactor and quits work.

(3) chain control: this A.C. contactor possesses the usefulness of the input interface of normally-open normally-close contact for chain control.

With the capacitor discharger that above element is formed, perhaps form the capacitor discharger of said function with the flexible replacement of relay controllable silicon.

This patent is little energy consumption, and though several years power consumption of amount of capacity continuous operation less than 4 kilowatts/time, i.e. 4 degree electricity, energy-saving effect is considerable, noiseless during work, long service life simple in structurely is easy to establishment.

Claims

1. non-noise AC contactor with very-low energy consumption, include E type (or U type) iron core, be provided with electromagnetism pull-in winding (4) in the centre of E type (or U type) upper and lower iron core (2), (3), it is characterized in that movable suction disc (5) and upper and lower iron core (2), (3) of movable E type (or U type) fuse, pole shoe (6) holds suction disc (5), establish permanent magnet (8) in the centre of left and right sides pole shoe (6), be provided with bucking coil (7) on the top of pole shoe (6), bucking coil (7) connects capacitor discharger (11).

2. non-noise AC contactor with very-low energy consumption according to claim 1 is characterized in that capacitor discharger (11), by bridge rectifier (12), resistance R ₁, R ₂, R ₃, R ₄, R ₅, diode D ₅, capacitor C ₁, C ₂, C ₃, controllable silicon BG ₁Form, wherein the diode D in the bridge rectifier ₁Anode be to connect mains switch TA, QA, diode D ₁, D ₂Negative terminal be to connect resistance R ₁With diode D ₅Anode, the negative terminal of diode D5 connects the anode of capacitor C1 respectively, an end of bucking coil (7), another termination controllable silicon BG of bucking coil (7) ₁Anode, controllable silicon BG ₁Negative electrode and capacitor C ₁Negative terminal be connected capacitor C ₁Negative terminal and resistance R ₁, R ₂And capacitor C ₂Anode be connected capacitor C ₂Negative terminal respectively with resistance R ₂An end, diode D ₃, D ₄Anode, resistance R ₅An end join resistance R ₅Other end connecting resistance R ₃, R ₄, capacitor C ₃A termination controllable silicon BG ₁Trigger electrode, resistance R ₄, capacitor C ₃Another termination controllable silicon BG ₁Negative electrode, resistance R ₃Another termination controllable silicon BG ₁Anode.