CN102342758A - Control circuit of electric cooker - Google Patents
Control circuit of electric cooker Download PDFInfo
- Publication number
- CN102342758A CN102342758A CN2011102669933A CN201110266993A CN102342758A CN 102342758 A CN102342758 A CN 102342758A CN 2011102669933 A CN2011102669933 A CN 2011102669933A CN 201110266993 A CN201110266993 A CN 201110266993A CN 102342758 A CN102342758 A CN 102342758A
- Authority
- CN
- China
- Prior art keywords
- loop
- controllable silicon
- power supply
- output
- stabilizing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 41
- 239000010703 silicon Substances 0.000 claims abstract description 41
- 230000036772 blood pressure Effects 0.000 claims description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
Images
Landscapes
- Control Of Resistance Heating (AREA)
- Cookers (AREA)
Abstract
The invention relates to a control circuit of an electric cooker, which comprises a mains supply, a protection loop connected with the mains supply, a switch power supply loop connected with the protection loop, a voltage-reducing and voltage-stabilizing loop connected with the output end of the switch power supply loop, a control chip loop connected with the output end of the voltage-reducing and voltage-stabilizing loop, a controlled silicon driving loop connected with the output end of the control chip loop, a controlled silicon connected with the output end of the controlled silicon driving loop and a heater connected with the controlled silicon, wherein a control electrode G of the controlled silicon is connected with the output end of the controlled silicon driving loop, and a second anode T2 is connected with the heater. Compared with the prior art, the invention avoids the damage of the three-terminal voltage-stabilizing integrated device caused by overhigh temperature rise, improves the reliability of the electric cooker product and simultaneously leads the electric control board to be easier to design.
Description
Technical field
The present invention relates to a kind of control circuit of electric cooker, belong to the improvement technology of electric cooker control circuit.
Background technology
At present, prior art electric cooker product, general using controllable silicon drive the action of heater food are heated; Generally be that mains supply passes through reduction voltage loop, loop of voltage regulation successively on the control circuit; Output+5V power supply is for control chip provides working power, for controllable silicon provides trigger current.But because the controllable silicon drive current is bigger, makes that the temperature rise of the three-terminal voltage-stabilizing integrated device in the loop of voltage regulation is too high and occur damaging, cause the properties of product defective.
In order to solve the too high problem of three-terminal voltage-stabilizing integrated device temperature rise, prior art generally increases fin on the three-terminal voltage-stabilizing integrated device, but the electric current of the three-terminal voltage-stabilizing integrated device of flowing through is big more, and it is big more that fin must add, and brings difficulty for the design of automatically controlled plate.
Summary of the invention
The object of the present invention is to provide a kind of three-terminal voltage-stabilizing integrated device of can avoiding to cause because of temperature rise is too high damaging, guarantee that the electric cooker properties of product are reliable, make the control circuit of the electric cooker that automatically controlled plate designs more easily simultaneously.
Technical scheme of the present invention is: a kind of control circuit of electric cooker; Comprise mains supply; The protection loop that is connected with mains supply; With the loop-coupled Switching Power Supply of protection loop; The lowering and stabilizing blood pressure loop that is connected with Switching Power Supply loop output; The control chip loop that is connected with lowering and stabilizing blood pressure loop output; The controllable silicon that is connected with control chip loop output drives the loop; Controllable silicon that is connected with controllable silicon driving loop output and the heater that is connected with controllable silicon; Wherein silicon controlled control utmost point G is connected with the output that controllable silicon drives the loop; Second plate T2 is connected with heater; The output that it is characterized in that said Switching Power Supply loop is connected with the N utmost point of mains supply, and silicon controlled first anode T1 is connected with the output in Switching Power Supply loop.
Be parallel with protection capacitor C 6 between said silicon controlled control utmost point G and the first anode T1.
Compared with prior art; The present invention utilizes the out-put supply in Switching Power Supply loop for controllable silicon trigger current to be provided; Need not pass through the three-terminal voltage-stabilizing integrator in the lowering and stabilizing blood pressure loop; Therefore; The present invention has reduced the electric current of three-terminal voltage-stabilizing integrator of flowing through, and then has reduced the caloric value of three-terminal voltage-stabilizing integrator, has avoided the three-terminal voltage-stabilizing integrated device to cause because of temperature rise is too high damaging; Improved the electric cooker reliability of products, automatically controlled plate is designed more easily.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present invention.
Fig. 2 is the circuit diagram of the embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Show like Fig. 1; The control circuit of present embodiment electric cooker; Comprise mains supply 1; The protection loop 2 that is connected with mains supply; With the loop-coupled Switching Power Supply of protection loop 3; The lowering and stabilizing blood pressure loop 4 that is connected with Switching Power Supply loop output; The control chip loop 5 that is connected with lowering and stabilizing blood pressure loop output; The controllable silicon that is connected with control chip loop output drives loop 6; Drive the controllable silicon 7 that the loop output is connected with controllable silicon; The heater 8 that is connected with controllable silicon 7; Wherein controllable silicon 7 comprises first anode T1; Second plate T2 and control utmost point G; Control utmost point G is connected with the output that controllable silicon drives loop 6; Second plate T2 is connected with heater 8; The output in said Switching Power Supply loop 3 is connected with the N utmost point of mains supply, and the first anode T1 of controllable silicon 7 is connected with the output in Switching Power Supply loop 3.
Show like Fig. 2; Said protection loop 2 comprises fuse FUSE, resistance ZNR and capacitor C 1; Fuse FUSE is connected on the effect of playing overcurrent protection in the mains supply L utmost point (live wire); Resistance ZNR is connected in parallel on the two ends of mains supply and plays anti-effect of being struck by lightning; Capacitor C 1 is parallelly connected with resistance ZNR, with the antijamming capability of intensifier circuit;
Filter capacitor C2 and filter capacitor C3 that said Switching Power Supply loop 3 comprises the Switching Power Supply loop, is connected in parallel; The effect in Switching Power Supply loop is the electric main power supply to be converted to+the 12V power supply, and the output in Switching Power Supply loop 3 extremely links to each other with the N of mains supply;
Said lowering and stabilizing blood pressure loop 4 comprises dropping resistor R1, three-terminal voltage-stabilizing integrator U1, the filter capacitor C4 that is connected in parallel and filter capacitor C5; One end of resistance R 1 links to each other with+12V power supply; The other end links to each other with three-terminal voltage-stabilizing integrator U1, three-terminal voltage-stabilizing integrator U1 output+5V power supply;
Said control chip loop 5 by lowering and stabilizing blood pressure loop 4 output+the 5V power supply provides working power, the signal of output control reverse-blocking tetrode thyristor;
Said controllable silicon drives loop 6 and comprises resistance R 2, resistance R 3, resistance R 4 and triode Q1, and an end of resistance R 3 links to each other with the output in control chip loop 5, and the other end links to each other with the base stage of triode Q1; One end of resistance R 4 links to each other with triode Q1 base stage, other end ground connection, and effect is controllable silicon false triggering when preventing that control chip from resetting; The grounded emitter of triode Q1, colelctor electrode links to each other with resistance R 2; The other end of resistance R 2 links to each other with the control utmost point G of controllable silicon 7;
The control utmost point G of said controllable silicon 7 is connected with the other end of the resistance R 2 that drives loop 6, and first anode T1 links to each other with the output+12V power supply in Switching Power Supply loop 3, and second plate T2 links to each other with an end of heater 8; Be parallel with protection capacitor C 6 between the control utmost point G of controllable silicon 7 and the first anode T1;
The other end of said heater 8 extremely links to each other with the L of mains supply.
When the control circuit of present embodiment electric cooker was worked, mains supply 1 is output+12V power supply behind protection loop 2, Switching Power Supply loop 3 successively, again through lowering and stabilizing blood pressure loop 4 back output+5V power supplys; + 5V power supply is that control chip provides working power, when control chip is exported the signal of heater work, drives the triode Q1 conducting in the loop 6; Resistance R 2 ground connection; + 12V power supply is that controllable silicon 7 provides trigger current, controllable silicon 7 conductings, and heater 8 begins energising work.
The trigger current of controllable silicon 7 is provided by+12V power supply in the present embodiment; Need not pass through three-terminal voltage-stabilizing integrator U1; The electric current of three-terminal voltage-stabilizing integrator U1 has reduced to flow through; And then reduced the caloric value of three-terminal voltage-stabilizing integrator U1; Avoid three-terminal voltage-stabilizing integrated device U1 to cause because of temperature rise is too high damaging, improved the electric cooker reliability of products.
Claims (2)
1. the control circuit of an electric cooker; Comprise mains supply (1); The protection loop (2) that is connected with mains supply; With protection loop-coupled Switching Power Supply loop (3); The lowering and stabilizing blood pressure loop (4) that is connected with Switching Power Supply loop output; The control chip loop (5) that is connected with lowering and stabilizing blood pressure loop output; The controllable silicon that is connected with control chip loop output drives loop (6); Controllable silicon (7) that is connected with controllable silicon driving loop output and the heater (8) that is connected with controllable silicon (7); Wherein the control utmost point G of controllable silicon (7) is connected with the output that controllable silicon drives loop (6); Second plate T2 is connected with heater (8); The output that it is characterized in that said Switching Power Supply loop (3) is connected with the N utmost point of mains supply, and the first anode T1 of controllable silicon (7) is connected with the output of Switching Power Supply loop (3).
2. according to the control circuit of the said electric cooker of claim 1, it is characterized in that being parallel with protection capacitor C 6 between control utmost point G and the first anode T1 of said controllable silicon (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110266993.3A CN102342758B (en) | 2011-09-09 | 2011-09-09 | A kind of control circuit of electric cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110266993.3A CN102342758B (en) | 2011-09-09 | 2011-09-09 | A kind of control circuit of electric cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102342758A true CN102342758A (en) | 2012-02-08 |
| CN102342758B CN102342758B (en) | 2015-09-09 |
Family
ID=45542122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110266993.3A Active CN102342758B (en) | 2011-09-09 | 2011-09-09 | A kind of control circuit of electric cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102342758B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933620A (en) * | 2021-09-14 | 2022-01-14 | 深圳拓邦股份有限公司 | Heating module state detection circuit and refrigeration equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1522646A (en) * | 2003-02-21 | 2004-08-25 | 乐金电子(天津)电器有限公司 | Electric cooker driving device |
| CN101267197A (en) * | 2008-04-15 | 2008-09-17 | 美的集团有限公司 | Control device and control method for reducing average drive current of silicon controlled rectifier |
| CN201266919Y (en) * | 2008-09-22 | 2009-07-01 | 三实电器(漳州)有限公司 | Power supply circuit of proximity switch |
| CN201340532Y (en) * | 2009-02-04 | 2009-11-04 | 金莱克电气股份有限公司 | Control circuit of automobile soymilk maker |
| JP2011165418A (en) * | 2010-02-08 | 2011-08-25 | Panasonic Corp | Rice cooker |
| CN201960237U (en) * | 2011-01-19 | 2011-09-07 | 卫斌鹏 | Electric soldering iron with temperature control device |
| CN202234853U (en) * | 2011-09-09 | 2012-05-30 | 美的集团有限公司 | Control circuit of electric cooker |
-
2011
- 2011-09-09 CN CN201110266993.3A patent/CN102342758B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1522646A (en) * | 2003-02-21 | 2004-08-25 | 乐金电子(天津)电器有限公司 | Electric cooker driving device |
| CN101267197A (en) * | 2008-04-15 | 2008-09-17 | 美的集团有限公司 | Control device and control method for reducing average drive current of silicon controlled rectifier |
| CN201266919Y (en) * | 2008-09-22 | 2009-07-01 | 三实电器(漳州)有限公司 | Power supply circuit of proximity switch |
| CN201340532Y (en) * | 2009-02-04 | 2009-11-04 | 金莱克电气股份有限公司 | Control circuit of automobile soymilk maker |
| JP2011165418A (en) * | 2010-02-08 | 2011-08-25 | Panasonic Corp | Rice cooker |
| CN201960237U (en) * | 2011-01-19 | 2011-09-07 | 卫斌鹏 | Electric soldering iron with temperature control device |
| CN202234853U (en) * | 2011-09-09 | 2012-05-30 | 美的集团有限公司 | Control circuit of electric cooker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933620A (en) * | 2021-09-14 | 2022-01-14 | 深圳拓邦股份有限公司 | Heating module state detection circuit and refrigeration equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102342758B (en) | 2015-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103633614B (en) | Electronic protection, for driving method and the application thereof of electronic protection | |
| TW201244527A (en) | LED drive circuit | |
| CN103260302A (en) | LED driver with adjustable conduction time | |
| CN108633118A (en) | It operates the method for transistor including protects the circuit and integrated circuit of driver | |
| CN104539141B (en) | Switching Power Supply dipulse pulsewidth limiting circuit and its implementation | |
| CN106416071A (en) | Drive circuit for semiconductor switching element | |
| CN103700542B (en) | Actuating of relay response and delay detection circuit, circuit board and there is its electric heating products | |
| CN103440017B (en) | A kind of small power control method of food processor | |
| CN101345405B (en) | Protection circuit of power switch device | |
| CN208046962U (en) | Led drive circuit | |
| CN102342758A (en) | Control circuit of electric cooker | |
| CN202234853U (en) | Control circuit of electric cooker | |
| CN104754800B (en) | A kind of control device of LED modules inrush current | |
| CN203368840U (en) | LED driving circuit and LED display device | |
| CN202550694U (en) | CT (current transformer) power taking circuit allowing for reducing heat of CT | |
| CN105223486A (en) | A kind of IGBT module parallel pairing proving installation and method of testing | |
| US20110235219A1 (en) | Protecting device | |
| CN204190376U (en) | Preionization multi-clearance ceramet gas discharge tube overvoltage protection | |
| CN205212806U (en) | Silicon controlled rectifier array switch and have impulse generator of this switch | |
| CN112600161B (en) | Silicon controlled rectifier high temperature protection device and circuit control system | |
| CN111536756B (en) | Control apparatus for refrigerator | |
| CN204720975U (en) | A kind of heating wire operator guards stage by stage | |
| CN202405740U (en) | Current-limiting protection circuit of alternating current power supply loop | |
| CN108271287A (en) | Protective circuit | |
| CN102984864A (en) | LED lamp driving power supply with lightning protection and automatic temperature control functions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Applicant after: MIDEA GROUP Co.,Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Applicant before: Midea Group |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: MEIDI GROUP CO. LTD. TO: MIDEA GROUP CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |