CN2034744U

CN2034744U - Automatic resetting multifunctional electricity-saving protector

Info

Publication number: CN2034744U
Application number: CN 87203404
Authority: CN
Inventors: 张忠仁
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-07-01
Filing date: 1987-07-01
Publication date: 1989-03-22

Abstract

The utility model provides an automatic resetting multifunctional electricity-saving protector which comprises a full-wave rectification power source, an overvoltage perceptron (1), an electric shock perceptron (2), an overcurrent perceptron (3), a signal amplifier (4) and a circuit break actuating mechanism, wherein, the overvoltage perceptron is composed of a voltage divider which is composed of R-[5], W-[2] and C; the electric shock perceptron can be composed of a ferrite bead zero sequence mutual inductor; the overcurrent perceptron makes a small iron core B-[2], coils L-[4], L-[5] and a current mutual inductor as a detector head. When accidents such as overvoltage, electric shock, electrical leakage, overcurrent, short circuit, etc. appear, the utility model can cut off the power source and resumes power supply until the fault is eliminated so as to ensure safety.

Description

Automatic resetting multifunctional electricity-saving protector

The utility model belongs to the technical field of household electrical appliance.

The most number average of the Electric protector of seeing in the market belongs to the protector of simple function, as overvoltage protector, overcurrent protector, electric leakage protector or the like.These products are function singleness not only, and can not automatically reset after the outage.Though the DDZ-A type over-voltage and over-current protector that nearest Sichuan Province Neijiang City river radio factory succeeds in developing has been broken away from the weakness of simple function, also has only two kinds of functions.The said goods is except that function is less, and price all is higher.Under the living standard condition of present China, one family is purchased various Electric protectors simultaneously, and not only financial burden is overweight but also install also pretty troublesome.Real daily life shows that various Electric protectors all are needs, does not wish that as electric industry management department residential electricity consumption is excessive, thereby wishes to install overcurrent (overload) protector; The resident worries that the high pressure house lead in causes the badly damaged of high-grade household electrical appliance, thereby wishes to install the overvoltage protector; Old man and child worry to take place electric shock accidents, thereby wish to install earth leakage protector ...

The purpose of this utility model is a kind of protector that has multiple function simultaneously of design, can automatic recovery of power supply after getting rid of with electric fault, take place to disobey and the accident of safety to guarantee under the situation of overvoltage, overcurrent and electric shock, to be unlikely.

Certainly the multifunctional power saving protector that resets provided by the utility model is gone into parts such as the big device (4) and the actuator that opens circuit and is formed by perceptron, signal, it is characterized in that perceptron is made up of overvoltage perceptron (1), electric shock perceptron (2), overcurrent perceptron (3) three, three's output is connected in parallel on the input of signal amplifier, and monostable delayer (5), the relay (6) of actuator are connected in series and signal amplifier and formation open circuit.Its structured flowchart as shown in Figure 1.Each part of Fig. 1 is respectively: overvoltage perceptron (1), electric shock perceptron (2), overcurrent perceptron (3), signal amplifier (4), monostable delayer (5), relay (6).

As can be seen from Figure 1, structure and operation principle from the multifunctional power saving protector that resets are: by three parts of perceptron, be that overvoltage perceptron, overcurrent perceptron and electric shock perceptron detect three kinds of fault-signals respectively, be overvoltage signal, overcurrent and short-circuit signal, electric shock electric leakage signal, these three kinds of signals are by being attempted by the output entering signal amplifier of three kinds of perceptrons on the signal amplifier input.The fault-signal that the has been exaggerated actuator that goes again to promote to open circuit cuts off power supply circuits.The actuator that opens circuit is made up of monostable delayer and relay.Signal amplifier, monostable delayer, relay three adopt and are connected in series.The effect of monostable delayer is that it drives the relay adhesive at once after fault takes place, the break of contact power supply circuits of control relay.But when monostable time-delay finished, it can make relay discharge again again, thereby restores electricity.If fault is not eliminated, then monostable delayer continues to make relay to keep attracting state, guarantees not go to restore electricity when fault exists.

An embodiment of the multifunctional power saving protector that resets certainly provided by the utility model as shown in Figure 2.Below in conjunction with Fig. 2 the structure of each part of protector is illustrated.

(A) overvoltage perceptron (1) is by R ₅, W ₂And C ₉The voltage divider of forming constitutes, the output of its input termination full-wave rectifier.Be that line voltage is through capacitor C ₁₀Send into the full-wave rectifier rectification, the voltage after the rectification passes through R on the one hand ₄, DW ₂, C ₈The voltage stabilizing circuit that constitutes is made power supply usefulness for signal amplifier and monostable delayer, then passes through by R on the other hand ₅, W ₂, C ₉The voltage divider of forming carries out dividing potential drop, and the output of this voltage divider is exactly the input of the output termination signal amplifier of overvoltage perceptron, is about to by R ₅, W ₂And C ₉Signal after the voltage divider dividing potential drop of being formed is by isolating diode D ₄Send into amplifier input terminal.

(B) electric shock perceptron (2) adopts by ferrite bead B ₁The zero-sequence transformer of making constitutes, two input coil L ₁, L ₂Equal turn numbers and around to identical.Output winding L ₃Capacitor C through serial connection ₁Be connected on the amplifier input terminal.The magnet ring that adopts in the present embodiment is minimum, L ₁, L ₂The number of turns have only several circles.

(C) overcurrent perceptron (3), promptly adopts by little iron core B as its over-current detection head with current transformer ₂And coil L ₄, L ₅The current transformer that constitutes is as detection head, C ₂Can remove the influence of High-frequency Interference to current transformer, its output is connected on the buffer, if overcurrent accident or short circuit accident take place, then trouble signal is sent into the input that signal is gone into big device by the buffer of overcurrent perceptron, and this buffer is by diode D ₁, voltage-stabiliser tube DW ₁, resistance R ₁, capacitor C ₃Potentiometer W ₁Constitute its DW ₁(or overcurrent comparatively serious time) carries out transmitting behind the amplitude limit to fault-signal again when being short-circuited fault.The signal of being drawn by buffer is sent into the input of signal amplifier through isolating diode.

(D) signal amplifier (4) is by transistor, input filter capacitor C ₄, output filter capacitor C ₅, collector resistance R ₂Form.

(E) monostable delayer (5) can adopt the integrated package that can produce monostable time-delay after the triggering to constitute, can by the time base integrated package NE555 and R ₃, C ₆, C ₇Form, 1～8 terminal of NE555 connects by typical single stabilization delay circuit.In the said various fault-signals, electronegative potential all appears in the input terminal 2 of NE555 in this protector input electrical network or more than the generation, thereby causes that monostable high potential appears in lead-out terminal 7, and delay time is by R ₃, C ₇Decision.

(F) relay (6) is controlled by the lead-out terminal 3 of NE555, diode D ₃Be its auxiliary element, J ₁, J ₂For it cuts off the contact of power supply circuits.

Above-mentioned enforcement circuit all makes the relay adhesive and cuts off power supply circuits in just dropping in the electrical network and the said various faults in front take place, and the monostable delay time in the present embodiment is 5 minutes.Outside decapacitation was protected overvoltage, overcurrent, short circuit, contact electric leakage reliably, after external power grid cuts off the power supply again in the incoming call, this device can automatic time delay power supply in five minutes, and this is not suitable for the equipment advantageous particularly that the short time cuts off the power supply to refrigerator etc.

Automatic resetting multifunctional electricity-saving protector provided by the utility model is compared with at present seen various protectors, has one-machine-multi-function, and volume is little, and cost is low, and is highly sensitive, strong and the characteristics that can automatic recovery of power supply of reliability.

Claims

1, a kind of be applicable to overvoltage protection, overcurrent protection, short-circuit protection and get an electric shock earth leakage protective from the multifunctional power saving protector that resets, it goes into the big device (4) and the actuator that opens circuit etc. by full-wave rectifier power supply perceptron, signal and partly forms; it is characterized in that perceptron is made up of overvoltage perceptron (1), electric shock perceptron (2), overcurrent perceptron (3) three; three's output is connected in parallel on the input of signal amplifier; monostable delayer (5), the relay (6) of actuator are connected in series and signal amplifier and formation open circuit, wherein:

A) the overvoltage perceptron is by R ₅, W ₂And C ₉Voltage divider constitute the output of its input termination full-wave rectifier power supply;

B) the electric shock perceptron can be made of the zero-sequence transformer that ferrite bead is made, two input coil L ₁, L ₂Equal turn numbers and around to identical;

C) the overcurrent perceptron adopts by little iron core B ₂And coil L ₄, L ₅The current transformer that constitutes is as its over-current detection head;

D) monostable delayer can adopt the integrated package that produces monostable time-delay after the triggering again to constitute.

2, described by claim 1 from resetting the multifunctional power saving protector, it is characterized in that the output winding L of said electric shock perceptron ₃Capacitor C through a serial connection ₁After be connected on the input of signal amplifier.

3, described by claim 1 from resetting the multifunctional power saving protector, it is characterized in that the output of said overcurrent perceptron passes through to D ₁, DW ₂, R ₁, C ₂And W ₁Buffer of forming and isolating diode are connected to signal and change on the input of big device.

4, described by claim 1 from the multifunctional power saving protector that resets, base integrated package when the integrated package that it is characterized in that can producing after the said triggering monostable time-delay can be NE555.