CN102525253A - IH (Induction Heating) electromagnetic electric cooker with power adjusting function - Google Patents
IH (Induction Heating) electromagnetic electric cooker with power adjusting function Download PDFInfo
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- CN102525253A CN102525253A CN201210015240XA CN201210015240A CN102525253A CN 102525253 A CN102525253 A CN 102525253A CN 201210015240X A CN201210015240X A CN 201210015240XA CN 201210015240 A CN201210015240 A CN 201210015240A CN 102525253 A CN102525253 A CN 102525253A
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Abstract
An IH (Induction Heating) electromagnetic electric cooker with a power adjusting function comprises a pot body, an inner pot arranged in the pot body, and a pot cover. The pot body is internally provided with an electromagnetic heater for heating the inner pot; the electromagnetic heater comprises an electromagnetic oscillation circuit for generating heat, a switch connected with the electromagnetic oscillation circuit and a power supply, and a power controller stored with the switch conduction time, and the switch conduction time determines the watt level of the electromagnetic oscillation circuit; and the pot body is internally provided with a power adjusting module which can reset the switch conduction time in the power controller so as to adjust the heating power of the electromagnetic heater. The IH electromagnetic cooker has the advantages of realizing the adjustment of the power of the electric cooker without increasing the manufacturing and detecting cost.
Description
Technical field
The present invention relates to a kind of electric cooker.
Background technology
The IH electromagnetic rice cooker is owing to receive load, structural member tolerance; The influence of circuit element parameter drift is produced good circuit board after dressing up complete machine, and measured power meeting and the specified power deviation that dispatches from the factory are bigger; Just need this moment adjustment power to rated range, present technical scheme is: on main circuit, increase a current detection circuit, use an adjustable potentiometer as the current sample element on this current detection circuit; When finding that power has deviation, can regulate this potentiometer, change the sampled value of master controller to electric current; Master controller is regulated power automatically then, makes it normal.Regulate power through potentiometer and have following shortcoming: 1, needs increase the cost of potentiometer.2, need to increase the station of power detection on the production line, this station is unusual as finding power, need complete machine be pulled down; Regulator potentiometer, installation again, and then detect; If can not disposable adjusting put in place then need repeatedly repeat this operation, efficient be very low, and utmost point consumption is artificial.Even 3 make power normal through regulator potentiometer, also might be because overexert when regulating, or the quality problems of potentiometer own, potentiometer is damaged, cause product complete machine power to fluctuate widely.
Summary of the invention
For overcoming the above-mentioned shortcoming of prior art, the invention provides a kind of potentiometer of not setting up, need not the IH electromagnetic rice cooker with power adjusting function of changer during power adjusting.
Have the IH electromagnetic rice cooker of power adjusting function, comprise a pot body, place interior pot and pot cover in pot body, be provided with the electromagnetic heater of internal pot heating in the pot body;
Electromagnetic heater comprises the electromagnetic viscosimeter loop that can produce heat, connects the switch of electromagnetic viscosimeter loop and power supply and stores the power controller of switch conduction time, and the length of switch conduction time determines the watt level in electromagnetic viscosimeter loop;
It is characterized in that: pot is provided with switch conduction time in the power controller of can resetting in the body with the power conditioning module of the heating power of regulating electromagnetic heater.
Further; Described power conditioning module comprises and can send reset signal so that power controller gets into the power adjusting mode enable circuit of resetting the switch conduction time state to power controller; Power adjusting mode enable circuit comprises the replacement button that sends reset signal to power controller, increases the power button that subtracts that adds power button and minimizing switch conduction time of switch conduction time.
Further, described power conditioning module comprises also and being connected with switch and regulating circuit that gauge tap is switched on or switched off that power controller adds power signal or subtracts power signal transmissions to regulating circuit what power adjusting mode enable circuit sent;
Regulating circuit comprises the comparator that output is connected with switch, and the first input end of comparator is connected with the output of power controller, the preset fixed signal of second input input of comparator; Comparator toggles changes the connected state of switch.For example, during comparator output positive level signal, switch is in on-state, and when then exporting negative level when comparator generation upset, switch becomes off-state; When comparator overturn once more and exports positive level, switch was connected once more.
Further, described power controller comprises the main controller chip and from control device chip, the replacement port of main controller chip is connected with the replacement button, adds power button and subtracts power button and be connected with the input of main controller chip respectively; What the main controller chip obtained adds power signal or subtracts the power signal input from control device chip, from the control device chip-stored described switch connection time; Do not overturn and the maintained switch conducting in time at switch connection from the comparator of control device chip controls regulating circuit.
Further, the first input end of comparator is a positive input terminal, and second input is a negative input end, switch conduction during comparator output positive level;
Between the positive input terminal of the output of control device chip and comparator, be provided with first filter unit that filtering is lower than the level of fixed signal, first filter unit comprises first filter resistance, second filter resistance and first filter capacitor; First filter resistance, one end connects from the positive input terminal of the output of control device chip and other end connection comparator; Second filter resistance and the parallelly connected formation of first filter capacitor resistance-capacitance parallel connection combination, resistance-capacitance parallel connection combination one end connects the positive input terminal and the other end ground connection of comparator.
Further; The negative input end of comparator is provided with second filter unit that is higher than predetermined level in the filtering input signal; Second filter unit comprises diode, the 3rd filter resistance, the 4th filter resistance and second filter capacitor; The 4th filter resistance is connected with second filter capacitor and is formed the resistance-capacitance tandem compound, and the resistance capacitance tandem compound is parallelly connected with diode and the 3rd filter resistance, and input signal is from an end that is connected with the 4th filter resistance input of second filter capacitor; The other end of the 4th filter resistance is connected with the negative end of the 3rd filter resistance and diode, and the negative end voltage of diode is the predetermined level value.
Technical conceive of the present invention is: the power conditioning module of the switch conduction time in the power controller of can resetting is set on electric cooker, and the conduction time in adjustment electromagnetic viscosimeter loop, thus reach the purpose of regulating electric cooker power.
The present invention need not changer when regulating electric cooker power, need not set up potentiometer, and is simple in structure, with low cost.The present invention has and need not to increase manufacturing, detects the advantage that cost can realize regulating electric cooker power.
Description of drawings
Fig. 1 is existing potentiometer power conditioning circuitry figure.
Fig. 2 is a control block diagram of the present invention.
Fig. 3 is a circuit diagram of the present invention.
The specific embodiment
With reference to accompanying drawing, further specify the present invention:
Have the IH electromagnetic rice cooker of power adjusting function, comprise a pot body, place interior pot and pot cover in pot body, be provided with the electromagnetic heater of internal pot heating in the pot body.
Electromagnetic heater comprises the electromagnetic viscosimeter loop that can produce heat, connects the switch of electromagnetic viscosimeter loop and power supply and stores the power controller 2 of switch conduction time, and the length of switch conduction time determines the watt level in electromagnetic viscosimeter loop.The switch conduction time is long more, and the working time in electromagnetic viscosimeter loop is longer and power that produce is big more; The switch conduction time is short more, and the working time in electromagnetic viscosimeter loop is shorter and power that produce is more little.
Pot is provided with switch conduction time in the power controller 2 of can resetting in the body with the power conditioning module of the heating power of regulating electromagnetic heater.
Described power conditioning module comprises and can send reset signal so that power controller gets into the power adjusting mode enable circuit 1 of resetting the switch conduction time state to power controller; Power adjusting mode enable circuit 1 comprises the replacement button that sends reset signal to power controller, increases the power button that subtracts that adds power button and minimizing switch conduction time of switch conduction time.
Described power conditioning module comprises also and being connected with switch and regulating circuit 3 that gauge tap is switched on or switched off that power controller 2 adds power signal or subtracts power signal transmissions to regulating circuit what power adjusting mode enable circuit sent;
Regulating circuit 3 comprises the comparator IC1D that output is connected with switch, and the first input end of comparator IC1D is connected with the output of power controller 2, the preset fixed signal of second input input of comparator IC1D; Comparator IC1D upset changes the connected state of switch.For example, during comparator IC1D output positive level signal, switch is in on-state, and when then exporting negative level when comparator IC1D generation upset, switch becomes off-state; When comparator IC1D overturn once more and exports positive level, switch was connected once more.Certainly, can be set to also that switch is in on-state when comparator IC1D output negative level signal, when comparator upset takes place and during the output positive level, switch becomes off-state.
Described power controller 2 comprises the main controller chip and from control device chip; The replacement port RST of main controller chip is connected with the replacement button, adds power button and subtracts power button and be connected with input PA7/SCL, PA6/SDA, the PA5/INTO of main controller chip respectively; What the main controller chip obtained adds power signal or subtracts the power signal input from control device chip, from the control device chip-stored described switch connection time; Do not overturn and the maintained switch conducting in time at switch connection from the comparator IC1D of control device chip controls regulating circuit 3.
The first input end 11 of comparator IC1D is a positive input terminal, and the second input 1-is a negative input end, switch conduction during comparator IC1D output positive level;
Between the positive input terminal 11 of the output PWM0/PD0 of control device chip and comparator IC1D, be provided with first filter unit that filtering is lower than the level of fixed signal; First filter unit comprises the first filter resistance R16, the second filter resistance R17 and the first filter capacitor CD6; The first filter resistance R16, one end connects from the positive input terminal 11 of the output PWM0/PD0 of control device chip and other end connection comparator IC1D; The second filter resistance R17 and the parallelly connected formation of first filter capacitor CD6 resistance-capacitance parallel connection combination, resistance-capacitance parallel connection combination one end connects positive input terminal 11 and the other end ground connection GND of comparator IC1D.
The negative input end 10 of comparator IC1D is provided with second filter unit that is higher than predetermined level in the filtering input signal; Second filter unit comprises diode D8, the 3rd filter resistance R36, the 4th filter resistance R38 and the second filter capacitor C7; The 4th filter resistance R38 connects with the second filter capacitor C7 and forms the resistance-capacitance tandem compound; The resistance capacitance tandem compound is parallelly connected with diode D8 and the 3rd filter resistance R36; Input signal is from an end that is connected with the 4th filter resistance R38 input of the second filter capacitor C7; The other end of the 4th filter resistance R38 is connected with the negative end of the 3rd filter resistance R36 and diode D8, and the negative end voltage of diode D8 is the predetermined level value.Input signal is a synchronizing signal.Be example explanation with 5V as the predetermined level value in the present embodiment, when the voltage of synchronizing signal is higher than 5V, diode D8 conducting, thus be higher than the voltage waveform of 5V in the filtering synchronizing signal.
Technical conceive of the present invention is: the power conditioning module of the switch conduction time in the power controller of can resetting is set on electric cooker, and the conduction time in adjustment electromagnetic viscosimeter loop, thus reach the purpose of regulating electric cooker power.
The present invention need not changer when regulating electric cooker power, need not set up potentiometer, and is simple in structure, with low cost.The present invention has and need not to increase manufacturing, detects the advantage that cost can realize regulating electric cooker power.
The described content of this specification embodiment only is enumerating the way of realization of utility model design; Protection scope of the present invention should not be regarded as and only limit to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (6)
1. have the IH electromagnetic rice cooker of power adjusting function, comprise a pot body, place interior pot and pot cover in pot body, be provided with the electromagnetic heater of internal pot heating in the pot body;
Electromagnetic heater comprises the electromagnetic viscosimeter loop that can produce heat, connects the switch of electromagnetic viscosimeter loop and power supply and stores the power controller of switch conduction time, and the length of switch conduction time determines the watt level in electromagnetic viscosimeter loop;
It is characterized in that: pot is provided with switch conduction time in the power controller of can resetting in the body with the power conditioning module of the heating power of regulating electromagnetic heater.
2. the IH electromagnetic rice cooker with power adjusting function as claimed in claim 1; It is characterized in that: described power conditioning module comprises and can send reset signal so that power controller gets into the power adjusting mode enable circuit of resetting the switch conduction time state to power controller; Power adjusting mode enable circuit comprises the replacement button that sends reset signal to power controller, increases the power button that subtracts that adds power button and minimizing switch conduction time of switch conduction time.
3. the IH electromagnetic rice cooker with power adjusting function as claimed in claim 2; It is characterized in that: described power conditioning module comprises also and being connected with switch and regulating circuit that gauge tap is switched on or switched off that power controller adds power signal or subtracts power signal transmissions to regulating circuit what power adjusting mode enable circuit sent;
Regulating circuit comprises the comparator that output is connected with switch, and the first input end of comparator is connected with the output of power controller, the preset fixed signal of second input input of comparator; Comparator toggles changes the connected state of switch.
4. the IH electromagnetic rice cooker with power adjusting function as claimed in claim 3; It is characterized in that: described power controller comprises the main controller chip and from control device chip; The replacement port of main controller chip is connected with the replacement button, adds power button and subtracts power button and be connected with the input of main controller chip respectively; What the main controller chip obtained adds power signal or subtracts the power signal input from control device chip, from the control device chip-stored described switch connection time; Do not overturn and the maintained switch conducting in time at switch connection from the comparator of control device chip controls regulating circuit.
5. like claim 3 or 4 described IH electromagnetic rice cookers with power adjusting function, it is characterized in that: the first input end of comparator is a positive input terminal, and second input is a negative input end, switch conduction during comparator output positive level;
Between the positive input terminal of the output of control device chip and comparator, be provided with first filter unit that filtering is lower than the level of fixed signal, first filter unit comprises first filter resistance, second filter resistance and first filter capacitor; First filter resistance, one end connects from the positive input terminal of the output of control device chip and other end connection comparator; Second filter resistance and the parallelly connected formation of first filter capacitor resistance-capacitance parallel connection combination, resistance-capacitance parallel connection combination one end connects the positive input terminal and the other end ground connection of comparator.
6. the IH electromagnetic rice cooker with power adjusting function as claimed in claim 5; It is characterized in that: the negative input end of comparator is provided with second filter unit that is higher than predetermined level in the filtering input signal; Second filter unit comprises diode, the 3rd filter resistance, the 4th filter resistance and second filter capacitor; The 4th filter resistance is connected with second filter capacitor and is formed the resistance-capacitance tandem compound; The resistance capacitance tandem compound is parallelly connected with diode and the 3rd filter resistance; Input signal is from an end that is connected with the 4th filter resistance input of second filter capacitor, and the other end of the 4th filter resistance is connected with the negative end of the 3rd filter resistance and diode, and the negative end voltage of diode is the predetermined level value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210015240.XA CN102525253B (en) | 2012-01-18 | 2012-01-18 | IH (Induction Heating) electromagnetic electric cooker with power adjusting function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210015240.XA CN102525253B (en) | 2012-01-18 | 2012-01-18 | IH (Induction Heating) electromagnetic electric cooker with power adjusting function |
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| Publication Number | Publication Date |
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| CN102525253A true CN102525253A (en) | 2012-07-04 |
| CN102525253B CN102525253B (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210015240.XA Active CN102525253B (en) | 2012-01-18 | 2012-01-18 | IH (Induction Heating) electromagnetic electric cooker with power adjusting function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102929310A (en) * | 2012-11-13 | 2013-02-13 | 苏州华美电器有限公司 | Automatic control system and control method of electrical heating power |
| CN103701416A (en) * | 2013-12-31 | 2014-04-02 | 青岛歌尔声学科技有限公司 | Infrared signal amplifying circuit |
| CN105843320A (en) * | 2015-01-16 | 2016-08-10 | 佛山市顺德区美的电热电器制造有限公司 | Power calibration circuit and cooking utensil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2479867Y (en) * | 2001-04-27 | 2002-03-06 | 简伟文 | Fuzzy logic computer controlled multi-function electric pressure cooker |
| WO2004047497A1 (en) * | 2002-11-20 | 2004-06-03 | Matsushita Electric Industrial Co., Ltd. | Induction heating apparatus |
| CN201135357Y (en) * | 2007-12-27 | 2008-10-22 | 北京市警盾京西厨房设备有限公司 | High power electromagnetic steaming box |
| CN201767745U (en) * | 2010-09-06 | 2011-03-23 | 浙江理工大学 | Novel electric cooker |
| CN102240180A (en) * | 2011-07-05 | 2011-11-16 | 佛山市顺德区美的电热电器制造有限公司 | Circuit board for IH (Indirect Heating) rice cooker |
-
2012
- 2012-01-18 CN CN201210015240.XA patent/CN102525253B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2479867Y (en) * | 2001-04-27 | 2002-03-06 | 简伟文 | Fuzzy logic computer controlled multi-function electric pressure cooker |
| WO2004047497A1 (en) * | 2002-11-20 | 2004-06-03 | Matsushita Electric Industrial Co., Ltd. | Induction heating apparatus |
| CN201135357Y (en) * | 2007-12-27 | 2008-10-22 | 北京市警盾京西厨房设备有限公司 | High power electromagnetic steaming box |
| CN201767745U (en) * | 2010-09-06 | 2011-03-23 | 浙江理工大学 | Novel electric cooker |
| CN102240180A (en) * | 2011-07-05 | 2011-11-16 | 佛山市顺德区美的电热电器制造有限公司 | Circuit board for IH (Indirect Heating) rice cooker |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102929310A (en) * | 2012-11-13 | 2013-02-13 | 苏州华美电器有限公司 | Automatic control system and control method of electrical heating power |
| CN103701416A (en) * | 2013-12-31 | 2014-04-02 | 青岛歌尔声学科技有限公司 | Infrared signal amplifying circuit |
| CN105843320A (en) * | 2015-01-16 | 2016-08-10 | 佛山市顺德区美的电热电器制造有限公司 | Power calibration circuit and cooking utensil |
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| Publication number | Publication date |
|---|---|
| CN102525253B (en) | 2014-02-26 |
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