CN1139769A

CN1139769A - Electric cooker automatic controller

Info

Publication number: CN1139769A
Application number: CN 95108334
Authority: CN
Inventors: 李新
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-06
Filing date: 1995-07-06
Publication date: 1997-01-08

Abstract

The present invention discloses an automatic on-off controller for electric cooker. Said controller is composed of outer shell, electronic meter, delay potentiometer, time-rgulating push button and control circuit. When using, said automatic controller is connected with electric cooker, the time-regulating push button is used to regulate the required time, then the delay potentiometer is turned to make delay-action, so that said electric cooker can be automatically switched on to work, and after its work is completed, said electric cooker can be automatically switched off.

Description

Electric cooker automatic controller

The utility model discloses a kind of electric cooker automatic controller, particularly a kind of self-actuated controller of common electric cooker energy timing automatic being thrown electricity.

Sale and the used electric cooker of family only have the function that artificial Push switch is thrown electricity heating, constant temperature in the market, do not possess the function of regularly throwing electricity.Very inconvenient for some people of just thinking to be able to eat hot meal of being reluctant to get up early or come home from work evening, people are badly in need of a kind of preset time that can shift to an earlier date and are regularly thrown electricity and make the electric cooker automatic controller of meal and come out at once.

But the purpose of this utility model aims to provide a kind of preset time, and any time makes electric cooker throw electricity work in 24 hours, and meal is carried out the self-actuated controller of back outage.

The technical measures that the utility model is taked are: the system of getting the liquid crystal display electron table make a noise signal through amplification, shaping, regularly, time-delay, control bidirectional triode thyristor conducting and shutoff make electric cooker throw electricity and outage.

Adopt the utility model to economize on electricity, save time, laborsavingly alleviate housework.The family that has children to go home to have dinner noon to man and wife both employed brings convenience.

Describe the utility model in detail below in conjunction with accompanying drawing

Fig. 1 is an appearance structure synoptic diagram of the present utility model

Fig. 2 Fig. 3 is an electrical schematic diagram of the present utility model

With reference to Fig. 1, form rectangle casing [1] by the ABS engineering plastics and above casing, be processed with circular hole and draw civil power, input lead and plug [2] connect the 220V civil power.Socket [3] is installed on the casing front panel, output 220V civil power, electric cooker is plugged in this.Electronic watch [4] shows the timing start-up time that is provided with, and potentiometer [5] is used for regulating the delay cut-off time after the electric cooker work.Pushbutton switch [6] is used for calibration in real time, when walking and be provided with regularly, electric cooker is thrown the time of electricity.The system of being drawn by electronic watch [4] signal that makes a noise is electrically connected with control circuit board in being installed in casing by lead.

With reference to Fig. 2, direct supply [7] is a joint 1,5V, No. 5 dry cells, LCDs [8], integrated circuit [9], be the finished product electronic watch core with locking signal output function, wherein two of integrated circuit [9] are triggered pin and connect two pushbutton switches [10], [11] respectively.Its signal output pin is connected to electric capacity [12].By pressing [10], [11] time and arbitrary electric cooker is set throws electricity time when adjustable is walked, this time goes up at liquid crystal display [8] and shows.When arriving set time, integrated circuit [9] will send 1 minute sound signal, every straight coupling [12], preset starting subordinate delay control circuit through electric capacity 0.022 μ F.

With reference to Fig. 3, the coupling sound signal of coming is via 2CS9013 triode [15], 3.9K Ω collector resistance [14], 220K Ω base biasing resistor [13], 0.022 μ F output coupling capacitor [16], and the ac amplifier circuit of formation amplifies.Deliver to afterwards by two IN4148 diodes [17], [18], two 10K Ω resistance [19], [20], 22 μ F electrochemical capacitors [21] carry out shaping to be handled.The positive pole of a termination diode [17] of resistance [19] wherein, the anodal same node connecting resistance [22] of a pin of the other end and resistance [20], electrochemical capacitor [21] constitutes the RC delay circuit, time constant 200ms.The signal time of coming when electric capacity [12] coupling could pass through 4.7K Ω resistance [22] current limliting and make 2CS9013 triode [24] saturation conduction at the current potential of the anode formations＞0.7V of electrochemical capacitor [21] during greater than 200ms.4.7K Ω resistance [23] is the collector resistance of triode [24], and at two ends and connect one 0.1 μ F electric capacity [25].Purpose is the moment of energized, and the current collection that makes triode [24] is power supply potential very.Timing ic 555[28] the triggering pin 2. connect the collector of triode [24]; Power supply power supply pin 8., 4. resetting pin connect positive supply, when making 555 timing ics [28] charged, when resetting enters duty; 5. pin is connected to 0.01 μ F anti-interference capacitor with common port; 7. 6. the threshold values pin be connected together with the discharge pin, connects common port by 470 μ F electrochemical capacitors [27], and 2.2M Ω potentiometer [a 26] sliding contact and an end fixed contact connect positive supply, another fixed contact pin [6] pin [7].

Electric main is introduced by plug [40], through fuse [41], discharge resistance [37] step-down after two IN4007 diodes [34], [35] rectification by 0.47 μ F electric capacity [36] 1M Ω, again through 100 Ω resistance [33] step-downs, 470 μ F electric capacity [32] filtering, 12V voltage stabilizing diode [31] voltage stabilizing becomes the 12V direct current, and for being the delay control circuit power supply that the electrical part of core is formed with 555 timing ics [28], triode [24], [15], 12V direct current negative pole connects common port.

With reference to Fig. 2, Fig. 3, when energized, integrated circuit [28] resets, and pin 2. current potential is higher than 1/3 supply voltage, and pin is output low level 3., not conducting of BCR10 bidirectional triode thyristor [38].Integrated circuit [28] internal discharge pipe conducting simultaneously, forcing 6. 7., pin is a low level.The sound signal time that integrated circuit [9] sends is during greater than 200ms, triode [24] is satisfied and is closed conducting, make integrated circuit [28] pin 2. level by high step-down, pin 3. level triggers bidirectional triode thyristor [38] conducting by low uprising through 560 Ω current-limiting resistances [30], and output AC civil power 220V makes electric cooker work under the situation of socket [39] reception load.Otherwise its internal discharge pipe ends, electric current charges to electrochemical capacitor [27] by potentiometer [26], [27] current potential rises gradually, is raised to when being higher than 2/3 supply voltage, and the pin of integrated circuit [28] 3. causes bidirectional triode thyristor [38] to turn-off constantly in the electric main zero passage by high step-down.The no 220V alternating current output of socket [39], electric cooker quits work.As seen the throwing of the electric cooker electricity time and throw electric delay time all can be by pressing the pushbutton switch adjustment.

The utility model is easy and simple to handle, connects power supply rice, water are put into the adjustment electric cooker throwing electricity time in the electric cooker, promptly presses button [6] and potentiometer [5].For example the night before last rice, water are put in the electric cooker and need not get up early in second day, throw electricity work automatically as long as the time is transferred to early the 6:00 electric cooker, 6:30 divides and gets up and can have a dinner, and delay time can arrange arbitrarily between 30-120 minute.

Claims

1,, in casing, is electrically connected with circuit board in being contained in shell by lead by casing [1], plug [2], socket [3], electronic watch [4], potentiometer [5], pushbutton switch [6] and be installed in electric cooker automatic controller that the control circuit in the casing constitutes, it is characterized in that mounting receptacle [3], liquid crystal display electron table [4], potentiometer [5], pushbutton switch [6] on the front panel of ABS engineering plastics pressure injection rectangularity outer cage [1].

2, electric cooker automatic controller according to claim 1, it is characterized in that amplifying via the ac amplifier circuit that 2CS9013 triode [15], 3.9K Ω collector resistance [14], 220K Ω base biasing resistor [13], 0.022 μ F output coupling capacitor [16] constitute, deliver to the shaping circuit that constitutes by two IN4148 diodes [17], [18], two 10K Ω resistance [19] [20] 22 μ F electrochemical capacitors [21] afterwards and carry out the shaping processing by the sound signal of electric capacity in the control circuit [12] coupling.

3, electric cooker automatic controller according to claim 2, the positive pole that it is characterized in that a termination diode [17] of resistance [19], the anodal same node connecting resistance [22] of one pin of the other end and resistance [20], electrochemical capacitor [21] constitutes RC delay circuit, time constant 200ms.