CN102525293A - Toaster having safety protection function - Google Patents
Toaster having safety protection function Download PDFInfo
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- CN102525293A CN102525293A CN2011104540490A CN201110454049A CN102525293A CN 102525293 A CN102525293 A CN 102525293A CN 2011104540490 A CN2011104540490 A CN 2011104540490A CN 201110454049 A CN201110454049 A CN 201110454049A CN 102525293 A CN102525293 A CN 102525293A
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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 pot foods such as baking bread etc.It like Chinese patent number is 200520100718.4 the utility model patent that name is called a kind of novel bread baker that discloses.When the needs cook bread, as long as press startup by system, it is downward that Canape can drive bread, and the clamping steel wire of both sides grips the rusk of centre, and after the baking time of setting, heating plate can be baked bread.When startup pressed down by system, switching starter moved down with starting by system through link gear, and switching starter makes the double-pole switch conducting in the circuit loop; A plurality of heating board energising heating of the toaster in the circuit loop, simultaneously, the electromagnet in the circuit loop is with the suction iron plate adhesive on the link gear; Link gear is in shifting state down always, when the stoving time of toaster reaches predetermined value, and the magnet spool dead electricity in the circuit loop; Inhale iron plate and leave electromagnet; Link gear makes switching starter rise to original position with starting by system under the effect of back-moving spring, and switching starter has left double-pole switch; Double-pole switch breaks off, and toaster energising heating stops.But at the toaster duration of work; Unexpected or artificially starting by neutralizing, switching starter can't be risen with starting by system, just double-pole switch is connected always; The heating board of toaster will be switched on always and heated at this moment, causes producing the danger of fire.
Summary of the invention
Technical problem to be solved by this invention provides a kind of toaster with safety protection function; When unexpected or artificially starting when neutralizing; After the baking time of copying of toaster reached and is scheduled to, the power supply on the heating plate can cut off automatically, eliminates the danger of fire generation.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of toaster with safety protection function; Comprise the heating plate group that electromagnet, double-pole switch, step-down rectifying circuit, 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; It is characterized in that also 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 first switch and second switch; The switches set of relay comprises the 3rd switch and the 4th switch, the live wire of a termination power of described first switch, an input of another termination step-down rectifying circuit of described first 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 a termination power of the 3rd switch, the zero line of a termination power of the 4th switch; The other end of the 3rd switch is connected with an end of heating plate group, and the other end of the 4th switch is connected with the other end of heating plate group.
Described step-down rectifying circuit comprises first resistance, first electric capacity, second resistance, first diode, second diode, the 3rd diode, the 4th diode, first Zener diode, second electric capacity, the 3rd resistance, second Zener diode, the 4th resistance and the 3rd electric capacity
The other end of first switch is connected with an end of first resistance, and the other end of first resistance is connected with an end of first electric capacity, and the other end of first electric capacity is connected with the negative pole of first diode, and the other end of first electric capacity is connected with the positive pole of second diode simultaneously,
One end of second resistance is connected with an end of first electric capacity, and the other end of second resistance is connected with the other end of first electric capacity,
The positive pole of first diode is connected with the positive pole of the 3rd diode; The positive pole of first diode is connected with the positive pole of first Zener diode and ground connection; The negative pole of the 3rd diode is connected with the positive pole of the 4th diode, and the negative pole of second diode is connected with the negative pole of the 4th diode, and the negative pole of the 3rd diode is connected with the other end of second switch; The negative pole of first Zener diode is connected with the negative pole of second diode
The positive pole of second electric capacity is connected with the negative pole of first Zener diode, the minus earth of second electric capacity,
The negative pole of second Zener diode is connected with the other end of the 3rd resistance, the plus earth of 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, and the 3rd resistance is connected with the 4th pin of chip, and an 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 through adjustable resistance; The other end of the tenth resistance is connected with the 5th pin of chip through the 11 resistance, is provided with the 12 resistance between the 5th pin of chip and the 6th pin of chip, and the 7th pin of chip passes through ground connection behind the 5th electric capacity and the 4th electric capacity; The 12 resistance is through ground connection behind the 4th electric capacity; The 8th pin ground connection of chip, the 3rd pin of chip is connected the grounded emitter of triode through the 13 resistance with the base stage of triode; Be provided with first hand switch between the base stage of triode and the emitter stage
The colelctor electrode of triode is connected with the coil of relay one end; The coil other end of relay is connected with the negative pole of 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, and the positive pole of the 5th diode is connected with the colelctor electrode of triode, and the negative pole of the 5th diode is connected with the coil other end of relay.
The other end of described the 3rd resistance is connected with an end of the 5th resistance, and the other end of the 5th resistance is used for relay indicating light through the first light emitting diode ground connection; The other end of the 3rd resistance is connected with an end of the 6th resistance; The other end of the 6th resistance is connected with the negative pole of second light emitting diode, and the positive pole of second light emitting diode is connected with second pin of chip, and the positive pole of second light emitting diode is through second hand switch and the 7th resistance eutral grounding; Form toaster and possess the reheating function; The other end of the 3rd resistance is connected with an end of the 8th resistance, and the other end of the 8th resistance is connected with the negative pole of the 3rd light emitting diode, and the positive pole of the 3rd light emitting diode is connected with first pin of chip; The positive pole of the 3rd light emitting diode is formed toaster and is possessed the function of thawing through the 3rd hand switch and the 9th resistance eutral grounding.
Compared with prior art, advantage of the present invention is at the toaster duration of work, unexpected situation or artificially starting by neutralizing; When startup can't be risen by system and switching starter, just under the condition that double-pole switch is connected always, when the stoving time of toaster reaches predetermined value; Timing control circuit makes the coil losing electricity of relay; The circuit of heating board breaks off, thereby the toaster heating is stopped, and has thoroughly eliminated the danger of breaking out of fire.
Description of drawings
Fig. 1 is structure chart of the present invention (one);
Fig. 2 is structure chart of the present invention (two);
Fig. 3 is a circuit block diagram of the present invention;
Fig. 4 circuit diagram of the present invention.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
A kind of toaster with safety protection function; Comprise the heating plate group HEATER that electromagnet T1, double-pole switch MAIN SW, step-down rectifying circuit 1, timing control circuit 2 and polylith heating plate are composed in series; The 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 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 a termination power of first switch, an input of another termination step-down rectifying circuit 1 of 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 a termination power of the 3rd switch, the zero line N of a termination power of the 4th switch; The other end of the 3rd switch is connected with the end of heating plate group HEATER, and the other end of the 4th switch is connected with the other end of heating plate group HEATER.
Step-down rectifying circuit 1 comprises first resistance R 1, first capacitor C 1, 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, 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 first switch is connected with an end of first resistance R 1; The other end of first resistance R 1 is connected with an end of first capacitor C 1; The other end of first capacitor C 1 is connected with the negative pole of the first diode D1, and the other end of first capacitor C 1 is connected with the positive pole of the second diode D2 simultaneously
One end of second resistance R 2 is connected with an end of first capacitor C 1, and the other end of second resistance R 2 is connected with the other end of 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, and the negative pole of the second diode D2 is connected with the negative pole of the 4th diode D4, and the negative pole of the 3rd diode D3 is connected with the other end of second switch; The negative pole of the first Zener diode DZ1 is connected with the negative pole of the second diode D2
The positive pole of second capacitor C 2 is connected with the negative pole of the first Zener diode DZ1, the minus earth of second capacitor C 2,
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, and the other end of the tenth resistance R 10 is connected with the 5th pin of chip U1 through adjustable resistance VR1, and the other end of the tenth resistance R 10 is connected with the 5th pin of chip U1 through the 11 resistance R 11; Be provided with the 12 resistance R 12 between the 5th pin of chip U1 and the 6th pin of chip U1; The 7th pin of chip U1 is through the 5th capacitor C 5 and the 4th capacitor C 4 back ground connection, and the 12 resistance R 12 is through the 4th capacitor C 4 back ground connection, the 8th pin ground connection of chip U1; The 3rd pin of chip U1 is connected with the base stage of triode Q1 through the 13 resistance R 13; The grounded emitter of triode Q1 is provided with the first manual switch SW 1 between the base stage of triode Q1 and the emitter stage
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, and 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 an end of the 5th resistance R 5; The other end of the 5th resistance R 5 is through first LED, 1 ground connection; The other end of the 3rd resistance R 3 is connected with an end of the 6th resistance R 6; The other end of the 6th resistance R 6 is connected with the positive pole of second LED 2, and the negative pole of second LED 2 is connected with second pin of chip U1, and the negative pole of second LED 2 is through the second manual switch SW 2 and the 7th resistance R 7 ground connection; The other end of the 3rd resistance R 3 is connected with an 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, and the negative pole of the 3rd LED 3 is connected with first pin of chip U1, and the negative pole of the 3rd LED 3 is through the 3rd hand switch SW3 and the 9th resistance R 9 ground connection.
In circuit diagram shown in Figure 4, HEATER1, HEATER2 and three heating plate J of HEATER3 are controlled by the switches set of relay K 1 separately, and electromagnet T1 is parallelly connected with relay K 1; Receive the control of triode Q1 together, at the toaster duration of work, unexpected or artificially starting by system 3 compactings (seeing Fig. 1 and Fig. 2); Startup can't be risen with switching starter 4 by system 3, that is to say under the condition that double-pole switch MAIN SW is communicated with always, when the stoving time of toaster reaches predetermined; The positive voltage vanishing current potential that the 3rd pin of U1 provides; Make the emitter stage of triode Q1 become by off-state by original conducting state, the coil losing electricity of relay K 1 has promptly broken off HEATER1, HEATER2 and HEATER3 circuit; Thereby the toaster heating is stopped, having eliminated the danger of breaking out of fire.
Under the normal condition, when the stoving 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 by off-state by 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 breaks off, and power supply breaks off.
Claims (4)
1. toaster with safety protection function; Comprise the heating plate group that electromagnet, double-pole switch, step-down rectifying circuit, timing control circuit and polylith heating plate are composed in series, a 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, it is characterized in that also comprising relay, and 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.
2. a kind of toaster according to claim 1 with safety protection function; It is characterized in that described double-pole switch comprises first switch and second switch; The switches set of relay comprises the 3rd switch and the 4th switch, the live wire of a termination power of described first switch, an input of another termination step-down rectifying circuit of described first 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 a termination power of the 3rd switch, the zero line of a termination power of the 4th switch; The other end of the 3rd switch is connected with an end of heating plate group, and the other end of the 4th switch is connected with the other end of heating plate group.
3. a kind of toaster according to claim 2 with safety protection function; It is characterized in that described step-down rectifying circuit comprises first resistance, first electric capacity, second resistance, first diode, second diode, the 3rd diode, the 4th diode, first Zener diode, second electric capacity, the 3rd resistance, second Zener diode, the 4th resistance and the 3rd electric capacity
The other end of first switch is connected with an end of first resistance, and the other end of first resistance is connected with an end of first electric capacity, and the other end of first electric capacity is connected with the negative pole of first diode, and the other end of first electric capacity is connected with the positive pole of second diode simultaneously,
One end of second resistance is connected with an end of first electric capacity, and the other end of second resistance is connected with the other end of first electric capacity,
The positive pole of first diode is connected with the positive pole of the 3rd diode; The positive pole of first diode is connected with the positive pole of first Zener diode and ground connection; The negative pole of the 3rd diode is connected with the positive pole of the 4th diode, and the negative pole of second diode is connected with the negative pole of the 4th diode, and the negative pole of the 3rd diode is connected with the other end of second switch; The negative pole of first Zener diode is connected with the negative pole of second diode
The positive pole of second electric capacity is connected with the negative pole of first Zener diode, the minus earth of second electric capacity,
The negative pole of second Zener diode is connected with the other end of the 3rd resistance, the plus earth of 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, and the 3rd resistance is connected with the 4th pin of chip, and an 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 through adjustable resistance; The other end of the tenth resistance is connected with the 5th pin of chip through the 11 resistance, is provided with the 12 resistance between the 5th pin of chip and the 6th pin of chip, and the 7th pin of chip passes through ground connection behind the 5th electric capacity and the 4th electric capacity; The 12 resistance is through ground connection behind the 4th electric capacity; The 8th pin ground connection of chip, the 3rd pin of chip is connected the grounded emitter of triode through the 13 resistance with the base stage of triode; Be provided with first hand switch between the base stage of triode and the emitter stage
The colelctor electrode of triode is connected with the coil of relay one end; The coil other end of relay is connected with the negative pole of 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, and the positive pole of the 5th diode is connected with the colelctor electrode of triode, and the negative pole of the 5th diode is connected with the coil other end of relay.
4. a kind of toaster according to claim 3 with safety protection function; The other end that it is characterized in that described the 3rd resistance is connected with an end of the 5th resistance; The other end of the 5th resistance is through the first light emitting diode ground connection, and the other end of the 3rd resistance is connected with an end of the 6th resistance, and the other end of the 6th resistance is connected with the positive pole of second light emitting diode; The negative pole of second light emitting diode is connected with second pin of chip; The negative pole of second light emitting diode is through second hand switch and the 7th resistance eutral grounding, and the other end of the 3rd resistance is connected with an end of the 8th resistance, and 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 first pin of chip, and the negative pole of the 3rd light emitting diode is through 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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110454049.0A CN102525293B (en) | 2011-12-30 | 2011-12-30 | Toaster having safety protection function |
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| CN102525293A true CN102525293A (en) | 2012-07-04 |
| CN102525293B CN102525293B (en) | 2014-07-23 |
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| CN201110454049.0A Expired - Fee Related CN102525293B (en) | 2011-12-30 | 2011-12-30 | Toaster having safety protection function |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755121A (en) * | 2012-07-24 | 2012-10-31 | 晶辉科技（深圳）有限公司 | Electronic anti-blocking protecting device for toast furnace |
| CN104665627A (en) * | 2013-12-02 | 2015-06-03 | 广东德豪润达电气股份有限公司 | Toaster |
| CN109414362A (en) * | 2016-07-14 | 2019-03-01 | 株式会社富士 | Care device |
| WO2021073379A1 (en) * | 2019-10-14 | 2021-04-22 | 广东百胜图科技有限公司 | Toaster |
| CN113079602A (en) * | 2021-04-15 | 2021-07-06 | 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 |
| WO2021179402A1 (en) * | 2020-03-11 | 2021-09-16 | 广东力升电器有限公司 | Toaster |
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| 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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| 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 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102755121A (en) * | 2012-07-24 | 2012-10-31 | 晶辉科技（深圳）有限公司 | Electronic anti-blocking protecting device for toast furnace |
| 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 |
| CN104665627A (en) * | 2013-12-02 | 2015-06-03 | 广东德豪润达电气股份有限公司 | Toaster |
| CN109414362A (en) * | 2016-07-14 | 2019-03-01 | 株式会社富士 | Care device |
| CN109414362B (en) * | 2016-07-14 | 2020-10-09 | 株式会社富士 | Nursing device |
| WO2021073379A1 (en) * | 2019-10-14 | 2021-04-22 | 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 |
| CN113079602A (en) * | 2021-04-15 | 2021-07-06 | 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 |
| 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 |
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