CN2030376U

CN2030376U - Trigger type time-delay interval relay

Info

Publication number: CN2030376U
Application number: CN 88204664
Authority: CN
Inventors: 楼锡仑
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-04-18
Filing date: 1988-04-18
Publication date: 1989-01-04

Abstract

The utility model discloses a time-delay interval relay; the advantage is that the deferred action of the relay is realized; an electrical source can carry out the charge to a large-capacity capacitor through the rectification of half-wave and the current limiting of larger resistance; the electric current is triggered by a trigger diode after delay time and can directly impel a reed permanent magnetism relay with bidirectional hold modes through the pulse mode. The utility model has the advantages of simple structure, high reliability, saved power consumption, noiselessness working, etc. The detailed executive plan and trinomial instances of an electricity saving delay switch, an electric fan timing natural wind generator and an electricity-saving protector for a refrigerator are in the specification; the cost of manufacture and the performance of the instances are conspicuously superior to the existing product in the market; the instances can be taken as the reference.

Description

Trigger type time-delay interval relay

The utility model belongs to time-delay interval relay field, is the combination application technique of Xiang Xin.Existing time-delay interval relay partly is made up of electronic circuit and mechanical relay two.But electronic delay circuit wherein generally can not directly insert civilian AC power, need could work after process step-down, rectification, the filtering, thereby the overall circuit complexity, cost is higher, and power consumption is bigger.

The purpose of this utility model is: 1, facilitating electronic circuit reduces cost.2, improve serviceability, reduce power consumption.

Composition of the present utility model and operation principle: the utility model also partly is made up of electronic circuit and mechanical relay two, but the main part of electronic circuit is a delay trigger circuit 1, and mechanical relay is a kind of tongue permanent-magnet relay, asks for an interview each accompanying drawing.Delay trigger circuit 1 wherein mainly is made of rectifier diode D, current-limiting resistance R, energy-storage capacitor C and diac ST.AC power is through the rectification of rectifier diode D and the current limliting of current-limiting resistance R, charge to energy-storage capacitor C, when charging voltage reaches the trigger value of diac ST, diac ST just triggers, be conducting state promptly from original open-circuit condition fast transition, so the capacitor C that is filled with electric energy makes the actuating of relay to 3 discharges of tongue permanent-magnet relay coil.More than if DC power supply, then rectifier diode can remove.The tongue permanent-magnet relay mainly is made of the tongue iron plate 2 in permanent magnet 5, magnetic conductive board 4, coil 3, the coil and contact 6 and contact 7, sees accompanying drawing 4.Following characteristics are arranged, and when coil 3 was connected with enough big forward dc electricity, the tongue iron plate 2 in the coil 3 will be magnetized, and drive contact 6 is flapped toward a certain utmost point in the magnetic field of permanent magnet 5.If tongue iron plate 2 is original just at this utmost point, then tongue iron plate 2 is motionless.After the current vanishes, tongue iron plate 2 continues to keep original state under the effect of permanent magnetism power.When coil 3 was connected with enough big reverse direct current, tongue iron plate 2 was by magnetic reversal, and drove another utmost point that contact 6 is flapped toward magnetic field in the magnetic field of permanent magnet 5.After the current vanishes, tongue iron plate 2 new states continue to keep.Be the characteristics that relay has pulse action, state maintenance, two-way stable.This relay and above delay trigger circuit 1 match, and have just realized various time-delay auto-actions.The length of delay time is decided by the size of resistance R and capacitor C.

Accompanying drawing 1 is the time delay relay circuit that works in AC power, by rectifier diode D ₁, current-limiting resistance R ₁, energy-storage capacitor C and diac ST constitute delay trigger circuit 1.Again by button A, resistance R ₂, reverse rectifier diode D ₂Form starting circuit.The course of work is as follows: 6 dozens of contacts are to a of contact 7 point at ordinary times, and capacitor C is by bypass, and diac ST does not have voltage, is in open-circuit condition.When button A was closed, the negative half-wave of alternating current was through reverse rectifier diode D ₂And resistance R ₂Be added on the relay coil 3, make the actuating of relay, 6 dozens of contacts are to the b of contact 7 point, so load appliance energising work.Simultaneously, the bypass of capacitor C is disengaged, and the positive half wave of AC power is through rectifier diode D ₁With current-limiting resistance R ₁, beginning is charged to capacitor C.The back button A that looses one's grip disconnects, and relay status continues to keep.Certain hour was after the past, and delay trigger circuit 1 triggers, and capacitor C promotes relay and gets back to original state, and keep, so the power supply of load circuit is cut off to relay coil 3 discharges.Simultaneously, capacitor C is by bypass once more, and diac ST also gets back to open-circuit condition.Wait for next time and touch the button A.Accompanying drawing 2 is the time delay relay circuit figure that work in DC power supply, and different with accompanying drawing 1 circuit is that relay coil 3 has positive and negative two groups, finishes bidirectional-movement.Saved the rectifier diode D in delay trigger circuit and the starting circuit simultaneously, other are partly identical with accompanying drawing 1 circuit.Accompanying drawing 3 is the interval relay circuit that work in AC power.By rectifier diode D ₁, current-limiting resistance R ₁, capacitor C ₁With diac ST ₁Constitute the forward circuits for triggering.Again by anti-phase rectifier diode D ₂, current-limiting resistance R ₂, capacitor C ₂With diac ST ₂Constitute reverse circuits for triggering.Operation principle is similar to above delay circuit, and when one group of circuits for triggering was in capacitor C charged state, the capacitor C of another group circuits for triggering was quit work by contact and contact bypass.Therefore, two groups of delay trigger circuits can only take turns to operate, alternately trigger, so relay is all absolutely, and gap work.Work in the interval relay of DC power supply, can with the same processing of accompanying drawing 2 circuit, promptly increase by one group of reverse winding, again rectifier diode is saved.

Advantage of the present utility model: 1 compares with prior art, and electronic circuit is simple especially, so cost is very low.2, because charging current is very little, generally have only tens microamperes, so power consumption economizes especially, part is not fragile yet in addition.3, can select large value capacitor for use, make the discharge transient current bigger several times than common relay, and needn't worry heating problem, therefore action is also reliable.4, the operating power of relay and independent of power voltage, so voltage adaptation wide range.

Enforcement of the present utility model and application: select for use at other part, diac can be selected the diac of bidirectional triode thyristor special use for use, and trigger voltage is generally about 30 volts.In addition, the reverse current of rectifier diode and the electric leakage of capacitor will be selected enough for a short time, withstand voltage ceiling voltage when being greater than work.Condenser capacity will be selected more as far as possible, generally is greater than 300 microfarads.On relay is made, can be with reference to the accompanying drawings 4, this is a kind of about 3 amperes small-sized tongue permanent-magnet relay, on the figure is to draw by 2 to 1 amplifications.Design feature is: the skeleton of coil 3 is combined into by identical two halves, and there is aperture the inboard, and there are two ears at tongue iron plate 2 middle parts, is contained in to replace swinging axle in the aperture.Contact 6 copper sheets are contained on the tongue iron plate 2, can reverse slightly, make the pressure of two contacts even.Four contact 7 copper sheets directly are contained on coil 3 skeletons.On two identical magnetic conductive boards 4 leg is arranged, can directly be welded on the circuit board.The resistance of coil 3 should make the maximum allowable value of maximum surge current less than diac, generally gets final product greater than 100 ohm.In addition, can on circuit, increase other various elements as required, as the starting circuit element, bimetal leaf, various indication light-emitting components or the like.

Below be three application examples of the present utility model:

Accompanying drawing 5 is time-delay electricity-saving on-off circuits.Operation principle is the same with accompanying drawing 1 circuit, and the characteristics here are, can be with many electric lights of many button controls.For example, on every floor in dormitory building button and electric light are housed all, as long as then each user presses wherein a button, floor will illuminate a period of time up and down, turns off the light automatically then.Very easy to use.The volume of this battery-conserving switch has only pulling switch generally big, and cost is more much lower than existing delay switch, and power consumption also lack than electric wire self electric leakage, the use some months just can be from the electricity charge cost-recovering, and significantly prolonged in the life-span of electric light.

Accompanying drawing 6 is regularly natural wind generator circuit of electric fan.K switch is beaten when A, B, three positions of C on the figure, is respectively normal operation, natural wind, three kinds of states of timing.Button K ₂Directly utilized the stop key of electric fan speed governing button.Operation principle is as follows: work as K switch ₁Beat when the A position cut-out electricity consumption container C of relay ₂By bypass, so relay connection in a single day just can not cut off again.At this moment click the stop key on the electric fan, i.e. the starting button K of relay ₂, then relay is connected, and presses in the third gear speed governing button again, and then electric fan begins to run well.If K switch ₁Beat in the B position, then relay gap work, electric fan is walked around and is stopped natural wind simulating.Rotation time is wherein regulated by potentiometer W, goes up parameter according to figure, can regulate between 1 minute to 60 minutes.Dwell time is by half adjustable resistance R ₂Regulate, be generally tens seconds between a few minutes.K switch ₁Beat at C ₁Position, then the connection electricity consumption container C of relay ₁By bypass, just can not connect again in case cut off the electricity supply, timer.Timing also is to be regulated by potentiometer W, between 1 minute to 60 minutes.After stopping, electric fan wants to restart, as long as click the stop key of electric fan, and then by third gear speed governing key, then again can timing a period of time.When electric fan also the running, in the time of need retiming, as long as regulate potentiometer W, again K switch ₁Beat toward the A position, capacitor C is charged again get final product.K switch on the figure ₃Be the shaft coupling switch of potentiometer W, when regularly and natural wind function time spent not, can the block system relay working power.The advantage of this timing natural wind generator is: the noise that the people is had difficulty in going to sleep of 1, having eliminated mechanical timer.2, increased the natural wind function, made the people feel comfortable.3, easy to use and cost is lower.Therefore be well suited on electric fan, promoting the use of.

Accompanying drawing 7 is refrigerator electricity-saving protection device circuit, and the refrigerating chamber of general refrigerator and the temperature requirement of refrigerating chamber are different.Controlled temperature of refrigerating chamber when using summer, and freezer temperature has also satisfied requirement.But to winter, because outside air temperature is very low, motor is difficult for starting, and in order to last method control, though then temperature of refrigerating chamber has satisfied requirement, and freezer temperature is often low inadequately, and height alters a great deal again.Because too high meeting makes meat food spoiled, so the user have to decide the temperature control value that is contained in the temperature controller of refrigerating chamber low excessively.Like this, not only take electricity but also shortened useful life of compressor.This section non-electricity protector adopts open loop control method, directly controls the running rate of motor, controls freezer temperature, makes it to reach requirement.At this moment temperature of refrigerating chamber generally also meets the demands, so winter, use was more effective.Specific practice is as follows: earlier temperature controller in the refrigerator was transferred to low position, and refrigerator electricity-saving protection device was connected on the power line again.Regulate figure and go up potentiometer W resistance, make the running rate of motor reach requirement and get final product.When access food, observe the thermometer of refrigerating chamber later on, remake suitable correction.Go up parameter by figure, the motor rotation rate is up to, and turns round 10 minutes, stops 10 minutes, and promptly running rate is 50%.When minimum be, turned round 3 minutes, stop 60 minutes, promptly about 5%.The effect of this section non-electricity protector protection motor is realized by highly sensitive bimetallic thermal deformation sheet.When running into power failure power supply at once again, overtension, brownout, when load is overweight, can causing that all current of electric increases, make the bimetal leaf temperature distortion, the contact contact so relay is cut off the electricity supply immediately, enters the motor halted state in advance.Generally speaking, if power connection and motor does not change, just then could cut off the electricity supply the energized again of delaying time then more than 10 minutes in 2 to 3 seconds.Owing to adopted electronic delay circuit here, so power cut off time can obtain very shortly, and delay time still can be more much longer than ordinary hot relay, guaranteed the safety of motor.To summer need recover as long as potentiometer W is got to the position that makes the disconnection of shaft coupling K switch, to make it to become single refrigerator protector and get final product by temperature when control in the refrigerator.This refrigerator electricity-saving protection device is compared with existing product, and 1, increased electricity-saving function when use winter, and prolonged the compressor life-span.2, defencive function is complete, and refrigerator is free from side effects.3, simple in structure, cost is lower, and self power consumption economizes especially.Therefore, can replace existing product fully.

The utility model can also be in applications such as the temperature adjustment of home electrical heater, the timings of delaying time except above three application.During as timer, the mode that can take directly to press the tongue iron plate is started, and makes structure simpler, and cost is lower.

Working in the delay trigger circuit of the present utility model of AC power, can also be by the circuits for triggering 8 of capacitor Cx current limliting, asks for an interview accompanying drawing 8.This is shorter at delay time, when the occasion that charging current is bigger is used, can reduce active power consumption, and heating is reduced.

Claims

1, a kind of by electronic circuit and mechanical relay time-delay interval relay dimerous, it is characterized in that containing in the electronic circuit delay trigger circuit 1 or the circuit 8 that constitute by current-limiting resistance R or limiting capacitor Cx, energy-storage capacitor C and diac ST, mechanical relay is a kind of tongue permanent-magnet relay with pulse action, state maintenance, two-way stable, time-delay auto-action wherein is to be triggered by energy-storage capacitor C process, directly promotes relay with pulse mode and realizes.

2, by claim 1, it is characterized in that the coil 3 of relay has tongue iron plate 2 in the coil 3 in the magnetic field of permanent magnet 5, can be along the swing of magnetic line of force direction, and drive contact 6 with contact 7 closures or separate.