CN2185470Y

CN2185470Y - Sound-and heat-removing electricity saver

Info

Publication number: CN2185470Y
Application number: CN 94203128
Authority: CN
Inventors: 刘在能
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-01
Filing date: 1994-02-01
Publication date: 1994-12-14
Anticipated expiration: 2004-02-01

Abstract

The utility model relates to an alternating-current contact type sound-and heat-removing electricity saver, comprising a start-up circuit, an operation circuit, an automatic switchover control circuit, etc., wherein, the automatic switchover control circuit is composed of a bridge rectifier which is composed of a VD1-VD4, a delay time electronic switch and an actuating mechanism, the delay time electronic switch is an IC, and the actuating mechanism is a relay K. The utility model realizes the purposes of high-voltage direct current start-up and low-voltage direct current operation, and has the advantages of simple structure, reliable performance, obvious effects of sound removal, heat removal and electricity saving.

Description

Sound-and heat-removing electricity saver

The utility model belongs to a kind of A.C. contactor, and the electromagnetic type motor switch removes sound, heat extraction, battery saving arrangement.

A.C. contactor, the electromagnetic type motor switch is the frequent starting that is used for controlling the start and stop of motor, electric furnace even load, a kind of low-voltage electrical apparatus device of continuous operation.

As everyone knows, A.C. contactor adopts under AC starting, a kind of like this operating state of ac operation and works, its major defect is: magnetic system transfer improper or situation that magnetic gap is dirty under, vibration and noise then can occur, cause serious environmental to pollute, running current is big simultaneously, temperature rise, reduced the useful life of contactor widely, even also can burn out the line bag, this problem seems especially outstanding for powerful A.C. contactor.

Particularly the power factor of A.C. contactor is very low, and this will waste many electric energy or the like.

The purpose of this utility model is to overcome the above-mentioned many defectives of A.C. contactor, a kind of vibration and the noise that can eliminate when moving is provided, improve work situation, significantly reduce the temperature rise of line bag and iron core, thereby prolong the useful life of A.C. contactor greatly.And can reduce starting resistor and working voltage as: the A.C. contactor of 380V can start under the situation of 220V, and the voltage of 4～8V just can move reliably, can save the Novel power saver of a large amount of meritorious and reactive powers:

Major technique measure of the present utility model is as follows:

A kind of sound, heat extraction, electricity-saving appliance of removing has start-up circuit, operation circuit and automatic switching control circuit etc., and start-up circuit is current-limiting resistance R ₃With rectifier diode VD ₃After the series connection, that succeeds electrical equipment " K " respectively often opens any contact and (VD ₉Anode), the operation circuit is a resistance R ₂, capacitor C ₂After the parallel connection, a termination (FU ₁Go out end) another termination (VD ₉Anode).Automatic switch-over circuit is IC(TWH8778), its (I) pin connects+the 12V power supply, and (2,3) pin is succeeded electrical equipment " K ", and (4) pin ground connection, (5) pin meet capacitor C ₄, C ₄With resistance R ₅After the series connection, join the normally opened contact K of relay " K " with+12V DC power supply again _1-1Be connected in the start-up circuit, its operation principle is as follows:

During startup, the work of automatic switchover controller is with the normally opened contact K of relay " K " _1-1Closure, this moment start-up circuit, operation circuit two-way electric current is added in the A.C. contactor line simultaneously and wraps, and makes its adhesive, behind 0.01-0.02S, automatic switch-over circuit ends: " K " discharges, K _1-1Disconnect, block the start-up circuit power supply, move circuit this moment and continue power supply, make A.C. contactor continue to keep adhesive, reach the purpose of low pressure operation.

The utility model is simple in structure, dependable performance, and do not need powerful current-limiting resistance.Because electric current is very very brief by the time of the resistance of rationing the power supply.

Routine accompanying drawing provides an embodiment of the present utility model down.

Fig. 1 removes sound heat extraction electricity-saving appliance schematic diagram

Below in conjunction with accompanying drawing the utility model is further described: a kind of A.C. contactor removes sound heat extraction electricity-saving appliance, has start-up circuit, operation circuit and automatic switching control circuit etc.

Start-up circuit is the normally opened contact K by relay " K " _1-1, resistance R ₃, rectifier diode VD ₈The three is in series, VD ₈Positive pole meet " JC " end, K _1-1Meet FU ₁Go out end.

The operation circuit is by resistance R ₂Capacitor C ₂After the parallel connection, a termination FU ₁Go out end, the other end is connected in VD _8-9Anode.

Automatic switch-over circuit system is made up of direct current regulation circuit, delay electronic switch and actuator etc., and direct current regulation circuit is by C ₁, R ₁Step-down, VD _1-4Form bridge rectifier, the power supply of output+12V is supplied with electronic switch, and described electronic switch is IC(8778), its (1) pin connects+the 12V power supply, and (2,3) pin is succeeded electrical equipment " K ", (4) pin ground connection, (5) pin meets capacitor C ₄, and C ₄Again with R ₅Meet IC(1 after the series connection) pin.

Described actuator is for the normally opened contact of relay " K ", " K " is connected in the start-up circuit.

Its operation principle is as follows:

1, start:

Press start button QA, when a end is positive potential, flow through the total two-way of electric current of JC, the first via is held by a, through QA → TA → FU ₁→ K _1-1→ R ₃→ VD ₈→ JC → FU ₂→ b end, VD at this moment ₉End.

Secondary route a holds, through QA → TA → FU ₁→ R ₂, C ₂→ JC → FU ₂→ b end, VD at this moment ₉Also end.

The two-way electric current is added on the JC coil simultaneously, and A.C. contactor is started, when the b end is timing, VD ₈End, so the start-up circuit electric current can not flow through the JC coil, but VD ₉In parallel with JC, because the self-induced e.m.f that the JC coil produces, cause and still have the electric current of equidirectional to pass through on the JC.

Operation:

Through behind the 0.01-0.02S, IC(TWH8778) to end, " K " dead electricity discharges, K _1-1Disconnect, promptly the disjunction start-up circuit changes normal operation over to.

The a end is timing, and power supply is through R ₂, C ₂Be added on the JC coil, the direction of coil current is from the top down, and negative half-wave is that the b end is timing, and supply voltage is added in C ₂, R ₂On, at this moment produce electrification kinetic potential, diode VD on the JC coil ₉Therefore be the self inductance current path, the JC sense of current is still from the top down, and the positive and negative half-wave sense of current of flowing through on the JC coil is constant, and promptly A.C. contactor enters the low-voltage direct operation.

Claims

1, a kind of A.C. contactor removes sound, heat extraction, electricity-saving appliance, it is characterized in that it has start-up circuit, operation circuit, and automatic switching control circuit, and described automatic switching control circuit is VD ₁-VD ₄The bridge rectifier of forming, delay electronic switch, actuator, and delay electronic switch is IC (TWH8778), and (1) pin of IC connects+the 12V DC power supply, and (2,3) pin meets " K ", (4) pin ground connection, (5) pin meets C ₄, C ₄Again with R ₅Connect after the series connection+the 12V power supply, described actuator is the normally opened contact K of " K ", " K " _1-1String is in start-up circuit.

2, sound, heat extraction, the electricity-saving appliance of removing according to claim 1 is characterized in that being provided with an automatic switching control circuit, and this circuit is by VD ₁-VD ₄Bridge rectifier, compositions such as delay electronic switch and actuator, the normally opened contact K of actuator " K ", " K " _1-1Be connected in the start-up circuit.

3, sound, heat extraction, the electricity-saving appliance of removing according to claim 1 and 2 is characterized in that being connected to a R between (1) pin of commutation circuit IC and (5) pin ₅With C ₄The delay circuit of series connection, delay time is 0.01-0.02S.

4, the sound heat extraction electricity-saving appliance that removes according to claim 3 is characterised in that: delay circuit R ₅With C ₄Series connection mid point and ground termination have one by R ₄, VD ₆The discharge loop of forming is with C ₄On electric charge can bleed off rapidly, make it frequent starting.