CN102525293B - Toaster having safety protection function - Google Patents
Toaster having safety protection function Download PDFInfo
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- CN102525293B CN102525293B CN201110454049.0A CN201110454049A CN102525293B CN 102525293 B CN102525293 B CN 102525293B CN 201110454049 A CN201110454049 A CN 201110454049A CN 102525293 B CN102525293 B CN 102525293B
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Abstract
The invention discloses a toaster having a safety protection function. The toaster comprises an electromagnet, a bipolar switch, a step-down rectifier circuit, a timing control circuit, a heating plate group and a relay, wherein the heating plate group consists of a plurality of heating plates which are connected in series; one end of the bipolar switch is connected with a power supply, and the other end of the bipolar switch is connected with the input end of the step-down rectifier circuit; the output end of the step-down rectifier circuit is connected with the input end of the timing control circuit; the output end of the timing control circuit is connected with a coil of the electromagnet; the coil of the relay is connected with the output end of the timing control circuit; and one end of a switch group of the relay is connected with the power supply, and the other end of the switch group of the relay is connected with the heating plate group. A start button is pressed accidentally or artificially, the start button and a switch starter cannot be raised, namely the coil of the relay loses power and the circuits of the heating plates are cut off when the toasting time reaches a preset value under the condition that the bipolar switch is switched on all the time, so that the toaster stops heating and the danger of fire is thoroughly eliminated.
Description
Technical field
The present invention relates to a kind of toaster, especially relate to a kind of toaster with safety protection function.
Background technology
Toaster is the small household appliance of the pot foods such as baking bread.As the utility model patent of China Patent No. to be 200520100718.4 disclose name is called a kind of Novel bread machine.When needs cook bread, as long as press, start by system, Canape can drive bread downward, and the clamping steel wire net of both sides grips middle rusk, and after the baking time of setting, heating plate can be baked bread.When startup presses down by system, switching starter moves down with startup by link gear together with system, switching starter makes the double-pole switch conducting in circuit loop, a plurality of heating board energising heating of the toaster in circuit loop, simultaneously, electromagnet in circuit loop is by the suction iron plate adhesive on link gear, link gear is always in lower shifting state, when the baking time of toaster reaches predetermined value, magnet spool dead electricity in circuit loop, inhale iron plate and leave electromagnet, link gear is under the effect of back-moving spring, make switching starter and start to rise to original position by system, switching starter has left double-pole switch, double-pole switch disconnects, toaster energising heating stops.But at toaster duration of work, surprisingly or artificially startup is lived by superzapping, make switching starter and start by system to rise, namely double-pole switch is connected always, now the heating board of toaster will be switched on always and be heated, and causes producing the danger of fire.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of toaster with safety protection function; when surprisingly or artificially startup being lived by superzapping; after the baking time of copying of toaster reaches and is scheduled to, the power supply on heating plate can cut off automatically, eliminates the danger of fire generation.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of toaster with safety protection function, comprise electromagnet, double-pole switch, step-down rectifying circuit, the heating plate group that timing control circuit and polylith heating plate are composed in series, one termination power of described double-pole switch, the input of another termination step-down rectifying circuit of double-pole switch, the input of the output termination timing control circuit of step-down rectifying circuit, the output of timing control circuit is connected with magnet spool, characterized by further comprising relay, the coil of relay is connected with the output of timing control circuit, switches set one termination power of relay, another termination heating plate group of the switches set of relay.
Described double-pole switch comprises the first switch and second switch, the switches set of relay comprises the 3rd switch and the 4th switch, the live wire of one termination power of the first described switch, one input of another termination step-down rectifying circuit of the first described switch, the zero line of one termination power of described second switch, another input of another termination step-down rectifying circuit of described second switch, the live wire of one termination power of the 3rd switch, the zero line of one termination power of the 4th switch, the other end of the 3rd switch is connected with one end of heating plate group, the other end of the 4th switch is connected with the other end of heating plate group.
Described step-down rectifying circuit comprises the first resistance, the first electric capacity, the second resistance, the first diode, the second diode, the 3rd diode, the 4th diode, the first Zener diode, the second electric capacity, the 3rd resistance, the second Zener diode, the 4th resistance and the 3rd electric capacity
The other end of the first switch is connected with one end of the first resistance, the other end of the first resistance is connected with one end of the first electric capacity, the other end of the first electric capacity is connected with the negative pole of the first diode, the other end of the first electric capacity is connected with the positive pole of the second diode simultaneously, one end of the second resistance is connected with one end of the first electric capacity, the other end of the second resistance is connected with the other end of the first electric capacity
The positive pole of the first diode is connected with the positive pole of the 3rd diode, the positive pole of the first diode is connected with the positive pole of the first Zener diode and ground connection, the negative pole of the 3rd diode is connected with the positive pole of the 4th diode, the negative pole of the second diode is connected with the negative pole of the 4th diode, the 3rd negative pole of diode and the other end of second switch are connected, the negative pole of the first Zener diode is connected with the negative pole of the second diode
The positive pole of the second electric capacity is connected with the negative pole of the first Zener diode, the minus earth of the second electric capacity, and the positive pole of the second electric capacity is connected with one end of the 3rd resistance;
The negative pole of the second Zener diode is connected with the other end of the 3rd resistance, the plus earth of the second Zener diode,
One end of the 4th resistance is connected with the other end of the 3rd resistance, the other end ground connection of the 4th resistance,
The positive pole of the 3rd electric capacity is connected with the other end of the 3rd resistance, the minus earth of the 3rd electric capacity,
Timing control circuit comprises that model is chip and the triode of GA5210PL, the 3rd resistance is connected with the 4th pin of chip, one end of the tenth resistance is connected with the other end of the 3rd resistance, the other end of the tenth resistance is connected with the 5th pin of chip by adjustable resistance, the other end of the tenth resistance is connected with the 5th pin of chip by the 11 resistance, between the 5th pin of chip and the 6th pin of chip, be provided with the 12 resistance, the 7th pin of chip is by ground connection after the 5th electric capacity and the 4th electric capacity, the 12 resistance is by ground connection after the 4th electric capacity, the 8th pin ground connection of chip, the 3rd pin of chip is connected with the base stage of triode by the 13 resistance, the grounded emitter of triode, between the base stage of triode and emitter stage, be provided with the first hand switch,
The colelctor electrode of triode is connected with coil one end of relay, the coil other end of relay is connected with the negative pole of the second diode, the colelctor electrode of triode is connected with magnet spool one end, the magnet spool other end is connected with the coil other end of relay, the 5th positive pole of diode and the colelctor electrode of triode are connected, and the negative pole of the 5th diode is connected with the coil other end of relay.
The other end of the 3rd described resistance is connected with one end of the 5th resistance, the other end of the 5th resistance is by the first light emitting diode ground connection, for relay indicating light, the other end of the 3rd resistance is connected with one end of the 6th resistance, the other end of the 6th resistance is connected with the negative pole of the second light emitting diode, the positive pole of the second light emitting diode is connected with the second pin of chip, the positive pole of the second light emitting diode is by the second hand switch and the 7th resistance eutral grounding, form toaster and possess reheating function, the other end of the 3rd resistance is connected with one end of the 8th resistance, the other end of the 8th resistance is connected with the negative pole of the 3rd light emitting diode, the positive pole of the 3rd light emitting diode is connected with the first pin of chip, the positive pole of the 3rd light emitting diode is by the 3rd hand switch and the 9th resistance eutral grounding, form toaster and possess defrosting function.
Compared with prior art, advantage of the present invention is at toaster duration of work, unexpected situation or artificially starting to live by superzapping, make to start in the time of cannot rising by system and switching starter, under the condition of namely always connecting at double-pole switch, when the baking time of toaster reaches predetermined value, timing control circuit makes the coil losing electricity of relay, the circuit of heating board disconnects, thereby toaster heating is stopped, and has thoroughly eliminated the danger of breaking out of fire.
Accompanying drawing explanation
Fig. 1 is structure chart of the present invention (one);
Fig. 2 is structure chart of the present invention (two);
Fig. 3 is circuit block diagram of the present invention;
Fig. 4 circuit diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
A kind of toaster with safety protection function, comprise electromagnet T1, double-pole switch MAIN SW, step-down rectifying circuit 1, the heating plate group HEATER that timing control circuit 2 and polylith heating plate are composed in series, a termination power of double-pole switch MAIN SW, the input of another termination step-down rectifying circuit 1 of double-pole switch MAIN SW, the input of the output termination timing control circuit 2 of step-down rectifying circuit 1, the output of timing control circuit 2 is connected with the coil of electromagnet T1, also comprise relay K 1, the coil of relay K 1 is connected with the output of timing control circuit 2, switches set one termination power of relay K 1, another termination heating plate group of the switches set of relay K 1.
Double-pole switch MAIN SW comprises the first switch and second switch, the switches set of relay K 1 comprises the 3rd switch and the 4th switch, the live wire L of one termination power of the first switch, one input of another termination step-down rectifying circuit 1 of the first switch, the zero line N of one termination power of second switch, another input of another termination step-down rectifying circuit 1 of second switch, the live wire L of one termination power of the 3rd switch, the zero line N of one termination power of the 4th switch, the other end of the 3rd switch is connected with one end of heating plate group HEATER, the other end of the 4th switch is connected with the other end of heating plate group HEATER.
Step-down rectifying circuit 1 comprises the first resistance R 1, the first capacitor C 1, the second resistance R 2, the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the first Zener diode DZ1, the second capacitor C 2, the 3rd resistance R 3, the second Zener diode DZ2, the 4th resistance R 4 and the 3rd capacitor C 3
The other end of the first switch is connected with one end of the first resistance R 1, the other end of the first resistance R 1 is connected with one end of the first capacitor C 1, the other end of the first capacitor C 1 is connected with the negative pole of the first diode D1, and the other end of the first capacitor C 1 is connected with the positive pole of the second diode D2 simultaneously
One end of the second resistance R 2 is connected with one end of the first capacitor C 1, and the other end of the second resistance R 2 is connected with the other end of the first capacitor C 1,
The positive pole of the first diode D1 is connected with the positive pole of the 3rd diode D3, the positive pole of the first diode D1 is connected with the positive pole of the first Zener diode DZ1 and ground connection, the negative pole of the 3rd diode D3 is connected with the positive pole of the 4th diode D4, the negative pole of the second diode D2 is connected with the negative pole of the 4th diode D4, the 3rd negative pole of diode D3 and the other end of second switch are connected, the negative pole of the first Zener diode DZ1 is connected with the negative pole of the second diode D2
The positive pole of the second capacitor C 2 is connected with the negative pole of the first Zener diode DZ1, the minus earth of the second capacitor C 2, and the positive pole of the second capacitor C 2 is connected with one end of the 3rd resistance R 3;
The negative pole of the second Zener diode DZ2 is connected with the other end of the 3rd resistance R 3, the plus earth of the second Zener diode DZ2,
One end of the 4th resistance R 4 is connected with the other end of the 3rd resistance R 3, the other end ground connection of the 4th resistance R 4,
The positive pole of the 3rd capacitor C 3 is connected with the other end of the 3rd resistance R 3, the minus earth of the 3rd capacitor C 3,
Timing control circuit comprises that model is chip U1 and the triode Q1 of GA5210PL, the 3rd resistance R 3 is connected with the 4th pin of chip U1, one end of the tenth resistance R 10 is connected with the other end of the 3rd resistance R 3, the other end of the tenth resistance R 10 is connected with the 5th pin of chip U1 by adjustable resistance VR1, the other end of the tenth resistance R 10 is connected with the 5th pin of chip U1 by the 11 resistance R 11, between the 5th pin of chip U1 and the 6th pin of chip U1, be provided with the 12 resistance R 12, the 7th pin of chip U1 is by the 5th capacitor C 5 and the rear ground connection of the 4th capacitor C 4, the 12 resistance R 12 is by the rear ground connection of the 4th capacitor C 4, the 8th pin ground connection of chip U1, the 3rd pin of chip U1 is connected with the base stage of triode Q1 by the 13 resistance R 13, the grounded emitter of triode Q1, between the base stage of triode Q1 and emitter stage, be provided with the first manual interrupteur SW 1,
The colelctor electrode of triode Q1 is connected with coil one end of relay K 1, the coil other end of relay K 1 is connected with the negative pole of the second diode D2, the colelctor electrode of triode Q1 is connected with coil one end of electromagnet T1, the coil other end of electromagnet T1 is connected with the coil other end of relay K 1, the positive pole of the 5th diode D5 is connected with the colelctor electrode of triode Q1, and the negative pole of the 5th diode D5 is connected with the coil other end of relay K 1.
The other end of the 3rd resistance R 3 is connected with one end of the 5th resistance R 5, the other end of the 5th resistance R 5 is by the first LED 1 ground connection, the other end of the 3rd resistance R 3 is connected with one end of the 6th resistance R 6, the other end of the 6th resistance R 6 is connected with the positive pole of the second LED 2, the negative pole of the second LED 2 is connected with the second pin of chip U1, the negative pole of the second LED 2 is by the second manual interrupteur SW 2 and the 7th resistance R 7 ground connection, the other end of the 3rd resistance R 3 is connected with one end of the 8th resistance R 8, the other end of the 8th resistance R 8 is connected with the positive pole of the 3rd LED 3, the negative pole of the 3rd LED 3 is connected with the first pin of chip U1, the negative pole of the 3rd LED 3 is by the 3rd hand switch SW3 and the 9th resistance R 9 ground connection.
In the circuit diagram shown in Fig. 4, HEATER1, tri-heating plate J of HEATER2 and HEATER3 are controlled by the switches set of relay K 1 separately, electromagnet T1 is in parallel with relay K 1, be subject to together the control of triode Q1, at toaster duration of work, surprisingly or artificially starting by system 3, suppress (seeing Fig. 1 and Fig. 2), make to start by system 3 and switching starter 4 and cannot rise, that is to say under the condition that double-pole switch MAIN SW is communicated with always, when the baking time of toaster reaches pre-timing, the positive voltage vanishing current potential that the 3rd pin of U1 provides, make the emitter stage of triode Q1 become cut-off off-state from original conducting state, the coil losing electricity of relay K 1, promptly disconnected HEATER1, HEATER2 and HEATER3 circuit, thereby toaster heating is stopped, eliminated the danger of breaking out of fire.
Under normal circumstances, when the baking time of toaster reaches predetermined value, the positive voltage vanishing current potential that the 3rd pin of U1 provides, make the emitter stage of triode Q1 become cut-off off-state from original conducting state, the coil losing electricity of electromagnet T1, electromagnet T1 is ineffective to inhaling iron plate 5, link gear moves under the effect of back-moving spring 6, switching starter 4 leaves double-pole switch MAIN SW, and double-pole switch MAIN SW disconnects, and power supply disconnects.
Claims (2)
1. a toaster with safety protection function, comprise electromagnet, double-pole switch, step-down rectifying circuit, the heating plate group that timing control circuit and polylith heating plate are composed in series, one termination power of described double-pole switch, the input of another termination step-down rectifying circuit of double-pole switch, the input of the output termination timing control circuit of step-down rectifying circuit, the output of timing control circuit is connected with magnet spool, also comprise relay, the coil of relay is connected with the output of timing control circuit, switches set one termination power of relay, another termination heating plate group of the switches set of relay,
It is characterized in that described double-pole switch comprises the first switch and second switch, the switches set of relay comprises the 3rd switch and the 4th switch, the live wire of one termination power of the first described switch, one input of another termination step-down rectifying circuit of the first described switch, the zero line of one termination power of described second switch, another input of another termination step-down rectifying circuit of described second switch, the live wire of one termination power of the 3rd switch, the zero line of one termination power of the 4th switch, the other end of the 3rd switch is connected with one end of heating plate group, the other end of the 4th switch is connected with the other end of heating plate group,
Described step-down rectifying circuit comprises the first resistance, the first electric capacity, the second resistance, the first diode, the second diode, the 3rd diode, the 4th diode, the first Zener diode, the second electric capacity, the 3rd resistance, the second Zener diode, the 4th resistance and the 3rd electric capacity
The other end of the first switch is connected with one end of the first resistance, the other end of the first resistance is connected with one end of the first electric capacity, the other end of the first electric capacity is connected with the negative pole of the first diode, the other end of the first electric capacity is connected with the positive pole of the second diode simultaneously, one end of the second resistance is connected with one end of the first electric capacity, the other end of the second resistance is connected with the other end of the first electric capacity
The positive pole of the first diode is connected with the positive pole of the 3rd diode, the positive pole of the first diode is connected with the positive pole of the first Zener diode and ground connection, the negative pole of the 3rd diode is connected with the positive pole of the 4th diode, the negative pole of the second diode is connected with the negative pole of the 4th diode, the 3rd negative pole of diode and the other end of second switch are connected, the negative pole of the first Zener diode is connected with the negative pole of the second diode
The positive pole of the second electric capacity is connected with the negative pole of the first Zener diode, the minus earth of the second electric capacity, and the positive pole of the second electric capacity is connected with one end of the 3rd resistance;
The negative pole of the second Zener diode is connected with the other end of the 3rd resistance, the plus earth of the second Zener diode,
One end of the 4th resistance is connected with the other end of the 3rd resistance, the other end ground connection of the 4th resistance,
The positive pole of the 3rd electric capacity is connected with the other end of the 3rd resistance, the minus earth of the 3rd electric capacity,
Timing control circuit comprises that model is chip and the triode of GA5210PL, the 3rd resistance is connected with the 4th pin of chip, one end of the tenth resistance is connected with the other end of the 3rd resistance, the other end of the tenth resistance is connected with the 5th pin of chip by adjustable resistance, the other end of the tenth resistance is connected with the 5th pin of chip by the 11 resistance, between the 5th pin of chip and the 6th pin of chip, be provided with the 12 resistance, the 7th pin of chip is by ground connection after the 5th electric capacity and the 4th electric capacity, the 12 resistance is by ground connection after the 4th electric capacity, the 8th pin ground connection of chip, the 3rd pin of chip is connected with the base stage of triode by the 13 resistance, the grounded emitter of triode, between the base stage of triode and emitter stage, be provided with the first hand switch,
The colelctor electrode of triode is connected with coil one end of relay, the coil other end of relay is connected with the negative pole of the second diode, the colelctor electrode of triode is connected with magnet spool one end, the magnet spool other end is connected with the coil other end of relay, the 5th positive pole of diode and the colelctor electrode of triode are connected, and the negative pole of the 5th diode is connected with the coil other end of relay.
2. a kind of toaster with safety protection function according to claim 1, the other end that it is characterized in that the 3rd described resistance is connected with one end of the 5th resistance, the other end of the 5th resistance is by the first light emitting diode ground connection, the other end of the 3rd resistance is connected with one end of the 6th resistance, the other end of the 6th resistance is connected with the positive pole of the second light emitting diode, the negative pole of the second light emitting diode is connected with the second pin of chip, the negative pole of the second light emitting diode is by the second hand switch and the 7th resistance eutral grounding, the other end of the 3rd resistance is connected with one end of the 8th resistance, the other end of the 8th resistance is connected with the positive pole of the 3rd light emitting diode, the negative pole of the 3rd light emitting diode is connected with the first pin of chip, the negative pole of the 3rd light emitting diode is by the 3rd hand switch and the 9th resistance eutral grounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110454049.0A CN102525293B (en) | 2011-12-30 | 2011-12-30 | Toaster having safety protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110454049.0A CN102525293B (en) | 2011-12-30 | 2011-12-30 | Toaster having safety protection function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102525293A CN102525293A (en) | 2012-07-04 |
| CN102525293B true CN102525293B (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110454049.0A Expired - Fee Related CN102525293B (en) | 2011-12-30 | 2011-12-30 | Toaster having safety protection function |
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| CN (1) | CN102525293B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755121B (en) * | 2012-07-24 | 2015-02-18 | 深圳市北鼎晶辉科技股份有限公司 | Electronic anti-blocking protecting device for toast furnace |
| CN104665627B (en) * | 2013-12-02 | 2017-09-26 | 广东德豪润达电气股份有限公司 | Toaster |
| JP6786601B2 (en) * | 2016-07-14 | 2020-11-18 | 株式会社Ｆｕｊｉ | Assistance device |
| CN211093526U (en) * | 2019-10-14 | 2020-07-28 | 广东百胜图科技有限公司 | Toaster |
| WO2021179402A1 (en) * | 2020-03-11 | 2021-09-16 | 广东力升电器有限公司 | Toaster |
| CN113079602B (en) * | 2021-04-15 | 2023-04-14 | 深圳市赛舸电子科技有限公司 | Variable voltage power supply for high-power digital variable frequency induction cooker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978838A (en) * | 1988-12-12 | 1990-12-18 | Sanjuan Antonio B | Device for electronic control of the supply of a heating resistance |
| US5438914A (en) * | 1993-09-30 | 1995-08-08 | Rowenta-Werke Gmbh | Electric circuit for controlling the heat output of heating resistances in household appliances |
| CN1738203A (en) * | 2005-07-06 | 2006-02-22 | 晶辉科技（深圳）有限公司 | Timing circuit of toaster and its control method |
| CN102008252A (en) * | 2010-10-22 | 2011-04-13 | 江门市港成家电有限公司 | Control circuit of energy-saving toaster |
-
2011
- 2011-12-30 CN CN201110454049.0A patent/CN102525293B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978838A (en) * | 1988-12-12 | 1990-12-18 | Sanjuan Antonio B | Device for electronic control of the supply of a heating resistance |
| US5438914A (en) * | 1993-09-30 | 1995-08-08 | Rowenta-Werke Gmbh | Electric circuit for controlling the heat output of heating resistances in household appliances |
| CN1738203A (en) * | 2005-07-06 | 2006-02-22 | 晶辉科技（深圳）有限公司 | Timing circuit of toaster and its control method |
| CN102008252A (en) * | 2010-10-22 | 2011-04-13 | 江门市港成家电有限公司 | Control circuit of energy-saving toaster |
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| CN102525293A (en) | 2012-07-04 |
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