CN102342758B - A kind of control circuit of electric cooker - Google Patents
A kind of control circuit of electric cooker Download PDFInfo
- Publication number
- CN102342758B CN102342758B CN201110266993.3A CN201110266993A CN102342758B CN 102342758 B CN102342758 B CN 102342758B CN 201110266993 A CN201110266993 A CN 201110266993A CN 102342758 B CN102342758 B CN 102342758B
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- Prior art keywords
- loop
- power supply
- controllable silicon
- output
- switching power
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- 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 42
- 239000010703 silicon Substances 0.000 claims abstract description 42
- 230000036772 blood pressure Effects 0.000 claims abstract description 13
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
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- Control Of Resistance Heating (AREA)
- Cookers (AREA)
Abstract
The present invention is a kind of control circuit of electric cooker, comprise mains supply, the protective loop be connected with mains supply, the Switching Power Supply loop be connected with protective loop, the lowering and stabilizing blood pressure loop be connected with Switching Power Supply loop output, the control chip loop be connected with lowering and stabilizing blood pressure loop output, the controllable silicon drive circuit be connected with control chip loop output, the controllable silicon be connected with controllable silicon drive circuit output and the heater be connected with controllable silicon, wherein silicon controlled control pole G is connected with the output of controllable silicon drive circuit, second plate T2 is connected with heater, it is characterized in that the output in described Switching Power Supply loop is connected with the N pole of mains supply, silicon controlled first anode T1 is connected with the output in Switching Power Supply loop.Compared with prior art, present invention, avoiding three-terminal voltage-stabilizing integrated device and cause because temperature rise is too high damaging, improve the reliability of electric cooker product, make electric-controlled plate more easily design simultaneously.
Description
Technical field
The present invention relates to a kind of control circuit of electric cooker, belong to the improvement opportunity of electric cooker control circuit.
Background technology
At present, prior art electric cooker product, general controllable silicon drives the action of heater to heat food, control circuit is generally mains supply is successively through reduction voltage loop, loop of voltage regulation, export+5V power supply, for control chip provides working power, for controllable silicon provides trigger current.But because controllable silicon drive current is comparatively large, makes the temperature rise of the three-terminal voltage-stabilizing integrated device in loop of voltage regulation too high and occur damaging, causing properties of product defect.
In order to solve the too high problem of three-terminal voltage-stabilizing integrated device temperature rise, prior art generally increases fin on three-terminal voltage-stabilizing integrated device, but the electric current flowing through three-terminal voltage-stabilizing integrated device is larger, and it is larger that fin must add, and brings difficulty to the design of electric-controlled plate.
Summary of the invention
The object of the present invention is to provide one that three-terminal voltage-stabilizing integrated device can be avoided to cause because temperature rise is too high damaging, guarantee that electric cooker properties of product are reliable, the control circuit of the electric cooker simultaneously making electric-controlled plate more easily design.
Technical scheme of the present invention is: a kind of control circuit of electric cooker, comprise mains supply, the protective loop be connected with mains supply, the Switching Power Supply loop be connected with protective loop, the lowering and stabilizing blood pressure loop be connected with Switching Power Supply loop output, the control chip loop be connected with lowering and stabilizing blood pressure loop output, the controllable silicon drive circuit be connected with control chip loop output, the controllable silicon be connected with controllable silicon drive circuit output and the heater be connected with controllable silicon, wherein silicon controlled control pole G is connected with the output of controllable silicon drive circuit, second plate T2 is connected with heater, it is characterized in that the output in described Switching Power Supply loop is connected with the N pole of mains supply, silicon controlled first anode T1 is connected with the output in Switching Power Supply loop.
Described silicon controlled controls to be parallel with protection electric capacity C6 between pole G and first anode T1.
Compared with prior art, the present invention utilizes the out-put supply in Switching Power Supply loop to provide trigger current for controllable silicon, require no the three-terminal voltage-stabilizing integrator in lowering and stabilizing blood pressure loop, therefore, present invention decreases the electric current flowing through three-terminal voltage-stabilizing integrator, and then decrease the caloric value of three-terminal voltage-stabilizing integrator, avoid three-terminal voltage-stabilizing integrated device and cause because temperature rise is too high damaging, improve the reliability of electric cooker product, make electric-controlled plate more easily design simultaneously.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present invention.
Fig. 2 is the circuit diagram of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As Fig. 1 shows, the control circuit of the present embodiment electric cooker, comprise mains supply 1, the protective loop 2 be connected with mains supply, the Switching Power Supply loop 3 be connected with protective loop, the lowering and stabilizing blood pressure loop 4 be connected with Switching Power Supply loop output, the control chip loop 5 be connected with lowering and stabilizing blood pressure loop output, the controllable silicon drive circuit 6 be connected with control chip loop output, the controllable silicon 7 be connected with controllable silicon drive circuit output, the heater 8 be connected with controllable silicon 7, wherein controllable silicon 7 comprises first anode T1, second plate T2 and control pole G, control pole G to be connected with the output of controllable silicon drive circuit 6, second plate T2 is connected with heater 8, the output in described Switching Power Supply loop 3 is connected with the N pole of mains supply, the first anode T1 of controllable silicon 7 is connected with the output in Switching Power Supply loop 3.
As Fig. 2 shows, described protective loop 2 comprises fuse FUSE, resistance ZNR and electric capacity C1, fuse FUSE is connected on the effect playing overcurrent protection in mains supply L pole (live wire), anti-lightning strike effect is played at the two ends that resistance ZNR is connected in parallel on mains supply, electric capacity C1 is in parallel with resistance ZNR, with the antijamming capability of intensifier circuit;
Described Switching Power Supply loop 3 comprises Switching Power Supply loop, the filter capacitor C2 be connected in parallel and filter capacitor C3, the effect in Switching Power Supply loop is AC mains to be converted to+12V power supply, and the output in Switching Power Supply loop 3 is extremely connected with the N of mains supply;
Described lowering and stabilizing blood pressure loop 4 comprises dropping resistor R1, three-terminal voltage-stabilizing integrator U1, the filter capacitor C4 be connected in parallel and filter capacitor C5, one end of resistance R1 is connected with+12V power supply, the other end is connected with three-terminal voltage-stabilizing integrator U1, and three-terminal voltage-stabilizing integrator U1 exports+5V power supply;
+ 5V the power supply that described control chip loop 5 is exported by lowering and stabilizing blood pressure loop 4 provides working power, exports the signal controlling reverse-blocking tetrode thyristor;
Described controllable silicon drive circuit 6 comprises resistance R2, resistance R3, resistance R4 and triode Q1, and one end of resistance R3 is connected with the output in control chip loop 5, and the other end is connected with the base stage of triode Q1; One end of resistance R4 is connected with triode Q1 base stage, other end ground connection, and effect is controllable silicon false triggering when preventing control chip from resetting; The grounded emitter of triode Q1, collector electrode is connected with resistance R2; The other end of resistance R2 is connected with the control pole G of controllable silicon 7;
The control pole G of described controllable silicon 7 is connected with the other end of the resistance R2 of drive circuit 6, and first anode T1 is connected with the output+12V power supply in Switching Power Supply loop 3, and second plate T2 is connected with one end of heater 8; Protection electric capacity C6 is parallel with between the control pole G of controllable silicon 7 and first anode T1;
The described other end of heater 8 is extremely connected with the L of mains supply.
When the control circuit of the present embodiment electric cooker works, mains supply 1 exports+12V power supply successively behind protective loop 2, Switching Power Supply loop 3, then exports+5V power supply behind lowering and stabilizing blood pressure loop 4; + 5V power supply provides working power for control chip, when control chip exports the signal of heater work, and the triode Q1 conducting in drive circuit 6, resistance R2 ground connection, + 12V power supply provides trigger current for controllable silicon 7, and controllable silicon 7 conducting, heater 8 starts the work of being energized.
In the present embodiment, the trigger current of controllable silicon 7 is provided by+12V power supply, require no three-terminal voltage-stabilizing integrator U1, reduce the electric current flowing through three-terminal voltage-stabilizing integrator U1, and then decrease the caloric value of three-terminal voltage-stabilizing integrator U1, avoid three-terminal voltage-stabilizing integrated device U1 to cause because temperature rise is too high damaging, improve the reliability of electric cooker product.
Claims (1)
1. the control circuit of an electric cooker, comprise mains supply (1), the protective loop (2) be connected with mains supply, the Switching Power Supply loop (3) be connected with protective loop, the lowering and stabilizing blood pressure loop (4) be connected with Switching Power Supply loop output, the control chip loop (5) be connected with lowering and stabilizing blood pressure loop output, the controllable silicon drive circuit (6) be connected with control chip loop output, the controllable silicon (7) be connected with controllable silicon drive circuit output and the heater (8) be connected with controllable silicon (7), wherein the control pole G of controllable silicon (7) is connected with the output of controllable silicon drive circuit (6), second plate T2 is connected with heater (8), it is characterized in that described Switching Power Supply loop (3) comprises Switching Power Supply, the filter capacitor C2 be connected in parallel and filter capacitor C3, the effect of Switching Power Supply is AC mains to be converted to+12V power supply, the output in Switching Power Supply loop (3) is extremely connected with the N of mains supply, and connect the first anode T1 of controllable silicon (7), protection electric capacity (C6) is parallel with between the control pole G of described controllable silicon (7) and first anode T1, described lowering and stabilizing blood pressure loop (4) comprises dropping resistor (R1), three-terminal voltage-stabilizing integrator (U1), the filter capacitor (C4) be connected in parallel and filter capacitor (C5), one end of dropping resistor (R1) is connected with+12V power supply, the other end is connected with three-terminal voltage-stabilizing integrator (U1), and three-terminal voltage-stabilizing integrator (U1) exports+5V power supply.
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 CN102342758A (en) | 2012-02-08 |
| CN102342758B true CN102342758B (en) | 2015-09-09 |
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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 |
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| Country | Link |
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| CN (1) | CN102342758B (en) |
Families Citing this family (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 (3)
| 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 |
| CN201266919Y (en) * | 2008-09-22 | 2009-07-01 | 三实电器(漳州)有限公司 | Power supply circuit of proximity switch |
| CN201960237U (en) * | 2011-01-19 | 2011-09-07 | 卫斌鹏 | Electric soldering iron with temperature control device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| JP5521597B2 (en) * | 2010-02-08 | 2014-06-18 | パナソニック株式会社 | rice cooker |
| 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 (3)
| 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 |
| CN201266919Y (en) * | 2008-09-22 | 2009-07-01 | 三实电器(漳州)有限公司 | Power supply circuit of proximity switch |
| CN201960237U (en) * | 2011-01-19 | 2011-09-07 | 卫斌鹏 | Electric soldering iron with temperature control device |
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| Publication number | Publication date |
|---|---|
| CN102342758A (en) | 2012-02-08 |
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| C10 | Entry into substantive examination | ||
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| 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 |
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Free format text: CORRECT: APPLICANT; FROM: MEIDI GROUP CO. LTD. TO: MIDEA GROUP CO., LTD. |
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