CN2735415Y - Electromagnetic cooker controller - Google Patents
Electromagnetic cooker controller Download PDFInfo
- Publication number
- CN2735415Y CN2735415Y CN 200420088598 CN200420088598U CN2735415Y CN 2735415 Y CN2735415 Y CN 2735415Y CN 200420088598 CN200420088598 CN 200420088598 CN 200420088598 U CN200420088598 U CN 200420088598U CN 2735415 Y CN2735415 Y CN 2735415Y
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- igbt
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- control circuit
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Abstract
The utility model discloses an electromagnetic cooker controller, comprising a micro-computer unit (MCU), a temperature detection circuit, a power output control circuit for heat preservation, a key input circuit, a voice indicating circuit, a display circuit and an AC power circuit. The circuits with different functions are connected with the corresponding terminals of the MCU. The utility model also comprises a current sampling circuit and a drive control circuit of the output of the IGBT. The current sampling circuit is connected with the AD sampling terminal of the MCU. The output terminal of the PWM signal of the MCU is connected with the drive control circuit of the output of the IGBT. The utility model outputs the PWM signal via the MCU to cause the drive control circuit of the output of the IGBT generating continuous pulse signals. Driving the power components IGBT to make the electromagnetic coil and the large capacitor generate electromagnetic wave with more than 20KHz oscillation, which makes the cooker realize high thermal efficiency and good effect of cooking.
Description
Technical field
The utility model relates to a kind of electric cooker controller, especially relates to a kind of electromagnetism electric cooker controller.
Background technology
General electric cooker all is to adopt electric hot tray to heat, and its controller is mainly by micro computer MCU, temperature sensing circuit, insulation power output control circuit, button inputting circuits, auditory tone cues electric circuit, display circuit and AC power circuit.Adopt the electric cooker of electric hot tray heating that two significant disadvantage are arranged: 1, the thermal efficiency is low; 2, can not realize the step-less adjustment heating power.
The utility model content
The utility model provides a kind of electric cooker that makes can realize thermal efficiency height, the effective electromagnetism electric cooker controller of culinary art.
The purpose of this utility model can realize by following technical measures: micro computer MCU, temperature sensing circuit, insulation power output control circuit, button inputting circuits, auditory tone cues electric circuit, display circuit and AC power circuit, and above-mentioned each functional circuit is connected with corresponding port on the micro computer MCU; It is characterized in that also comprising current sampling circuit and IGBT output Drive and Control Circuit, described current sampling circuit is connected to the AD sample port of micro computer MCU, and the pwm signal output port of micro computer MCU connects IGBT output Drive and Control Circuit.
The utility model comprises and is used to make controller to be in the down Monitor Unit circuit of low power consumpting state, and this circuit is connected with corresponding port on the micro computer MCU.
Be provided with civil power high tension protection circuit, current protecting circuit and the anti-pressure protection circuit that is used to protect high-power components IGBT in the IGBT output Drive and Control Circuit described in the utility model.
The utility model is by micro computer MCU output pwm signal, make IGBT output Drive and Control Circuit produce the consecutive pulses signal, driving power components and parts IGBT, make solenoid and big electric capacity produce vibration, thereby the electromagnetic wave of the KHz more than 20 that produces directly produces the electronics eddy current and heats in special electric cooker, because be internally directly heating of pot, thermal efficiency ratio adopts the mode of pot in the electric hot tray indirect heating electric cooker to improve 10%, reaches more than 85%.In addition high-power components IGBT is operated under the situation of high-voltage large current, very perfect to its safeguard measure, safe and reliable; The down Monitor Unit circuit is set, and fast detecting reduces the power consumption of back-up source to power down and enter low power consumpting state when power down, makes controller continue the in good time time clock feature of demonstration under power-down conditions.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of micro computer MCU control section of the present utility model;
Fig. 3 is the circuit theory diagrams of output drive control part of the present utility model;
Embodiment
Foregoing circuit is divided on two wiring boards, and first is keypad, and second is control panel, they is connected with the winding displacement cable with combination hub.Mainly contain micro computer MCU, button inputting circuits, down Monitor Unit circuit, auditory tone cues electric circuit, display circuit, insulation power output control circuit, power backup circuit on the keypad.Mainly contain temperature sensing circuit, current sampling circuit, IGBT output Drive and Control Circuit, AC power circuit on the control panel.Above-mentioned each functional circuit is connected (as shown in Figure 1) with corresponding port on the micro computer MCU.Keypad mainly is responsible for user interface such as button, demonstration and sound, and the collection capacity of steering logic and input is handled.Control panel mainly is responsible for gathering various monitoring variables and output drive controlling.
As shown in Figure 2, the electrical schematic diagram of micro computer MCU control section of the present utility model.Mainly comprise following:
Down Monitor Unit circuit 2 mainly is made up of resistance R 83-R86, triode Q11, capacitor C 30, and the collector of triode Q11 is connected to 40 pin of micro computer MCU through resistance R 84.
Insulation power output control circuit 4 mainly is made up of optocoupler TLP3526, resistance R 46, R47, is connected to 44 pin of micro computer MCU.
Auditory tone cues electric circuit 6 mainly is made up of hummer BUZ1, resistance R 51, triode Q7, is connected to 42 pin of micro computer MCU through resistance R 52.
Reset circuit 8 is made up of resistance R 87, capacitor C 37.Be connected to reset terminal 12 pin of MCU.Master clock circuit and secondary clock circuit 10 are connected to the 7-11 pin of MCU
As shown in Figure 3, the electrical schematic diagram of output drive control part of the present utility model mainly comprises following:
IGBT exports Drive and Control Circuit 13, comprises various holding circuits:
The civil power high tension protection circuit; diode D1, D2 are to AC rectification, through resistance R 10, R11 dividing potential drop, capacitor C 12, C13 smothing filtering; be connected to 6 pin of comparer U2A; when line voltage is too high, 6 pin voltage ratios, the 7 pin height of comparer U2A, the 1 pin output low level of comparer U2A; through diode D21, resistance R 24,26; influence push-and-pull triode group Q11, Q12, closed high-power components IGBT, when high voltage, protected IGBT.
Current protecting circuit; the current/voltage value of output in the current sampling circuit 12; be divided into two-way; one the tunnel is directly connected to MCU, and another road process stabilivolt Z3 is connected the B utmost point of resistance R 42 and triode Q9, the E utmost point ground connection of resistance R 42 other ends and triode with capacitor C 21; the C utmost point of triode Q9 connects the negative pole of stabilivolt Z2; the positive pole of Z2 is divided into two-way, and one the tunnel directly arrives MCU, and another road is connected to 5 pin of comparer U2C through resistance R 23.When feedback current was excessive, the 5 pin voltages of comparer U2C were dragged down, and when 5 pin voltage ratios, 4 pin of comparer U2C hanged down, therefore the 2 pin output low levels of comparer U2C had been closed IGBT, thereby protected IGBT when electric current is excessive.
The anti-pressure protection circuit; when high-power components IGBT turn-offed, the high pressure of kilovolt on the C of the IGBT utmost point produces was if exceed the withstand voltage of IGBT owing to some factor causes the voltage of the C utmost point; will damage IGBT so, so when back-pressure is too high, must turn-off IGBT fast.By resistance R 8, R9, R15, R36 back-pressure is carried out dividing potential drop, be connected to 8 pin of comparer U2B, when the back-pressure overtension, the voltage of 8 pin raises, when the voltage of 8 pin is higher than the voltage of 9 pin, the 14 pin output low levels of comparer U2B so, thus close IGBT.Thereby when back-pressure is too high, protected IGBT.
Main program flow of the present utility model enters initialization for after MCU resets, and next master routine begins, and judges whether to be in power-down state, if at the next present clock that just shows of power-down state, and enters low power consumpting state.If there is not power down, then judge whether to occur abnormal conditions, then show the code of makeing mistakes if any abnormal conditions, close various cooking functions and audible alarm is arranged.If do not have abnormal conditions then carry out function corresponding.
Its process of cooking is: the phase one water absorption course adopts miniwatt, and the high-power heating of subordinate phase makes rice reach boiling fast, and power fully seethed with excitement rice and expands during the phase III boiling process adopted, and the quadravalence section adopts and is incubated power.
Claims (3)
1, a kind of electromagnetism electric cooker controller, comprise micro computer MCU, temperature sensing circuit, insulation power output control circuit, button inputting circuits, auditory tone cues electric circuit, display circuit and AC power circuit, above-mentioned each functional circuit is connected with corresponding port on the micro computer MCU; It is characterized in that also comprising current sampling circuit and IGBT output Drive and Control Circuit, described current sampling circuit is connected to the AD sample port of micro computer MCU, and the pwm signal output port of micro computer MCU connects IGBT output Drive and Control Circuit.
2, electromagnetism electric cooker controller according to claim 1 is characterized in that comprising being used to make controller to be in the down Monitor Unit circuit of low power consumpting state, and this circuit is connected with corresponding port on the micro computer MCU.
3, electromagnetism electric cooker controller according to claim 1 is characterized in that being provided with civil power high tension protection circuit, current protecting circuit and the anti-pressure protection circuit that is used to protect high-power components IGBT in the described IGBT output Drive and Control Circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420088598 CN2735415Y (en) | 2004-09-27 | 2004-09-27 | Electromagnetic cooker controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420088598 CN2735415Y (en) | 2004-09-27 | 2004-09-27 | Electromagnetic cooker controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2735415Y true CN2735415Y (en) | 2005-10-19 |
Family
ID=35265287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420088598 Expired - Fee Related CN2735415Y (en) | 2004-09-27 | 2004-09-27 | Electromagnetic cooker controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2735415Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100539768C (en) * | 2007-10-30 | 2009-09-09 | 深圳和而泰智能控制股份有限公司 | A kind of electromagnetic oven synchronisation control means and circuit thereof |
| CN109682491A (en) * | 2018-12-11 | 2019-04-26 | 深圳市法拉第电驱动有限公司 | A kind of temperature sampling circuit, wiring board, electric machine controller and electric car |
| CN114300895A (en) * | 2021-12-06 | 2022-04-08 | 六安市同心畅能电子科技有限公司 | Energy-saving electric cooker wall socket circuit |
-
2004
- 2004-09-27 CN CN 200420088598 patent/CN2735415Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100539768C (en) * | 2007-10-30 | 2009-09-09 | 深圳和而泰智能控制股份有限公司 | A kind of electromagnetic oven synchronisation control means and circuit thereof |
| CN109682491A (en) * | 2018-12-11 | 2019-04-26 | 深圳市法拉第电驱动有限公司 | A kind of temperature sampling circuit, wiring board, electric machine controller and electric car |
| CN109682491B (en) * | 2018-12-11 | 2024-03-01 | 深圳市法拉第电驱动有限公司 | Temperature sampling circuit, circuit board, motor controller and electric automobile |
| CN114300895A (en) * | 2021-12-06 | 2022-04-08 | 六安市同心畅能电子科技有限公司 | Energy-saving electric cooker wall socket circuit |
| CN114300895B (en) * | 2021-12-06 | 2023-11-17 | 六安市同心畅能电子科技有限公司 | Wall socket circuit of energy-saving electric cooker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |