CN2115739U

CN2115739U - Timing fire adjuster for electric cooker

Info

Publication number: CN2115739U
Application number: CN 92203575
Authority: CN
Inventors: 王孚望
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-01
Filing date: 1992-03-01
Publication date: 1992-09-16

Abstract

The utility model relates to a timing fire adjuster for an electric cooker. The timing fire adjuster is timed by an electronic watch and the pressure is adjusted by a bidirectional thyristor. The timing fire adjuster mainly comprises a casing, a rectification circuit, an anti-jamming element, a load interface, a fire power indicator, a timer and a pressure adjuster of bidirectional thyristor. The utility model can be turned on or turned off by a timed mode which can be accurate to a minute and a second in 12 hours. The fire power can be adjusted with the timing fire adjuster. The timing fire adjuster is a good helper for housewives.

Description

Timing fire adjuster for electric cooker

The utility model relates to a kind of controller for electric consumption of electric cooking appliance, and particularly a kind of electric cooking appliance is fire regulation regularly.

The electric cooking appliance of Xiao Shouing only has regularly closing function as electric wok, electric cooker in the market, and the size of firepower is generally also non-adjustable.

Chinese patent CN2049902U discloses a kind of electric cooker that can connect power supply on schedule, mainly contains compositions such as electronic watch, integrated circuit, tongue tube, relay in its circuit, does not control the element of firepower size in the circuit.

The purpose of this utility model provide a kind of circuit stable, regularly reliably, not only can regulate firepower size, but also the electric cooking appliance that can be scheduled to energising any time or outage fire regulation regularly.

The purpose of this utility model realizes by following proposal:

The utility model comprises housing, rectification circuit, anti-interference element, loading interfaces, power interface, the firepower indicator, timer and bidirectional thyristor for regulating voltage device, wherein, timer comprises: the by-pass cock K2 on electronic watch core and the movement, K3, capacitor C 3, triode BG1, BG2, resistance R 3, R4, R11, R13, light emitting diode D11, D12, diode D7, K switch 1, the bidirectional thyristor for regulating voltage device comprises diode D8, resistance R 8, bidirectional triode thyristor D10, relaxation oscillator and series connection absorption circuit, wherein, relaxation oscillator comprises unijunction transistor D9, variable resistor R6, capacitor C 5, resistance R 7, R9, R12, the series connection absorption circuit comprises resistance R 10 and capacitor C 5.

The connecting relation of above-mentioned components and parts is: in the bidirectional thyristor for regulating voltage device, R10 connects with C5 and constitutes a branch road of two common ports, the absorption circuit of promptly connecting, two anodes (negative electrode) of D10 connect two common ports, the base stage of D9 connects the common port of C5 and C6 and connects the colelctor electrode of BG2, the b2 utmost point of D9 connects the silicon controlled control utmost point, another road connects common port through resistance R 12, bidirectional thyristor for regulating voltage device two common ports connect power supply behind load and anti-interference element, the emitter stage of BG2 connects the base stage of D9, direct current through rectification circuit connects the electronic watch core power input, two outputs 13 of movement, 12, one connect power supply, a serial connection C3, D7, insert the BG1 base stage behind the D4, electronic watch 12, cross-over connection capacitor C 4 between 13 ends, K switch 1 has two states, when O connects with a, R2 and R13, the R12 series connection is when O connects with b, R2 and R11, R12 constitutes "T"-shaped circuit, and R11 connects with D11; Above-mentioned K switch 1, K2, K3, light emitting diode D11, D12, loading interfaces, the adjusting knob of variable resistor R6, the digital display screen on the electronic watch core are fixed and are exposed shell.

Compared with the prior art the utility model has adopted the main element of bidirectional triode thyristor as pressure regulation, adopts electronic watch circuit regularly, has regularly advantages such as accurate, that circuit is reliable and stable.

Fig. 1 is circuit theory diagrams of the present utility model; Fig. 2 is the utility model outline drawing.

Below in conjunction with drawings and Examples structure of the present utility model and principle are described in more detail.

Embodiment:

As shown in Figure 1 and Figure 2, be a bidirectional thyristor for regulating voltage device in the frame of broken lines of the right among Fig. 1, its course of work is: supply voltage becomes dc pulse moving voltage by diode D8 rectification and resistance R 8 step-downs and is added to relaxation oscillator and makes its work, and oscillator is made up of resistance R 7, R9, R12, R6, capacitor C 5 and unijunction transistor D9.When pulsating volage rose, C5 progressively charged, and up to unijunction transistor D9 conducting, so the C5 discharge produces pressure drop on R12, thereby triggered the controllable silicon conducting.After the controllable silicon conducting, oscillating circuit dead electricity and quitting work, when being applied to the alternating voltage zero-crossing at controllable silicon D10 two ends, controllable silicon turn-offs, when treating that alternating voltage rises, said process repeats work, and wherein R6 is a variable resistor, regulates its resistance and can change charging interval to C5, thereby change the silicon controlled angle of flow, load voltage is changed, and R10 and C6 form the series connection absorption circuit, with the buffering abnormal pulsers.

Resistance R 1 and neon bulb D1 play firepower size indicative function;

Inductance L and capacitor C 2 formed anti-jamming circuits, when absorbing bidirectional triode thyristor work to the interference of power supply;

Remaining circuit is formed regularly part, capacitor C 1 coupling and step-down, and diode D2, D3 and voltage-stabiliser tube D4 rectifying and voltage-stabilizing, about 2V direct current is exported in capacitor C 2 filtering, and R2 step-down and D5, D6 voltage stabilizing produce about 1.4V direct current and supply with electronic watch work.

BG1 and BG2 constitute on-off circuit, as importing a high impulse in the base stage of BG1, and then its conducting and BG2 ends; Otherwise BG1 is by then BG2 conducting, and as the BG2 conducting, then relaxation oscillator quits work, and controllable silicon turn-offs.

Adopt common five-function electronic watch core as timing element in this example, its 12 and 13 pin can be drawn AC signal, when electronic watch was adjusted to PM, output low level was when ammeter is adjusted to AM, the output high level, when being adjusted to AM, this alternating voltage is coupled through C3, the D7 rectification, C4 filtering becomes high level makes BG1 conducting BG2 end controllable silicon work; Otherwise when being PM, controllable silicon turn-offs.

K1 is a state selecting switch; Beat when a position, light emitting diode D12 is bright, and two triodes do not have electricity, are the non-timed state; Beat when the b position, diode D11 is bright, is definition status.K2, K3 are that electronic watch is regularly adjusted button.

Above-mentioned components and parts are fixed in place on the circuit board in the box body, wherein, the digital display screen on K switch 1, K2, K3, light emitting diode D11, D12, loading interfaces, variable resistor R6, the electronic watch core is fixed and is exposed box body.

Among Fig. 2,1-firepower indication (D1), 2-shell, 3-non-timed state indication (D12), 5-definition status indication (D11), 4-state selecting switch (K1), 6-loading interfaces, 7-K2,8-electronic watch digital display, 9-K3,10-firepower adjusting knob (R6), 11-power interface.

Each main components and parts of this example are as follows with reference to model or specification:

D2, D3, D5, D6, D7, D8 are 1N4004, and D11, D12 are

,

Be 330K Ω, D9 is BT33, and D10 selects 16A for use Above specification, and enough fin will be arranged.

Claims

1, a kind of electric kitchenware timing fire regulation comprises housing, rectification circuit, anti-interference element, loading interfaces, power interface and firepower indicator, it is characterized in that the utility model is provided with timer and bidirectional thyristor for regulating voltage device, wherein:

(a) the bidirectional thyristor for regulating voltage device comprises diode D8, resistance R 8, bidirectional triode thyristor D10, relaxation oscillator and series connection absorption circuit, wherein, relaxation oscillator comprises unijunction transistor D9, variable resistor R6, capacitor C 5, resistance R 7, R9, R12, and the series connection absorption circuit comprises resistance R 10 and capacitor C 5;

(b) timer comprises: by-pass cock K2, the K1 on electronic watch core and the movement, capacitor C 3, triode BG1, BG2, resistance R 3, R4, R11, R13, light emitting diode D11, D12, diode D7, K switch 1;

Bidirectional thyristor for regulating voltage device two common ports connect power supply behind load and anti-interference element, the emitter stage of BG2 connects the base stage of D9, connect the power input of electronic watch core through the direct current of rectification circuit, two outputs 13,12 of movement, one connects power supply, insert the BG1 base stage behind serial connection C3, D7, the R4, cross-over connection capacitor C 4 between electronic watch 12 and 13 ends, K switch 1 has two states, 0 when connecting with a, and R2 connects with R13, D12, and 0 when connecting with b, R2 and R11, R3 constitute "T"-shaped circuit, and R11 connects with D11

Digital display screen on above-mentioned K switch 1, K2, K3, light emitting diode D11, D12, loading interfaces, variable resistor R6, the electronic watch core is fixed and is exposed the utility model shell.

2, electric kitchenware timing fire regulation according to claim 1, the connecting relation that it is characterized in that above-mentioned each element of bidirectional thyristor for regulating voltage device is: the R10 branch road that the constitutes two common ports absorption circuit of promptly connecting of connecting with C5, bidirectional triode thyristor D10 two anodes (negative electrode) connect two common ports, unijunction transistor D9 base stage connects the common port of C5 and R6 and connects the colelctor electrode of BG2, the b2 utmost point of D9 connects the silicon controlled control utmost point, and another road connects common port through resistance R 12.