CN105323875B - The electric rice cooker heated circuit of 12V~24V DC-voltage supplies - Google Patents
The electric rice cooker heated circuit of 12V~24V DC-voltage supplies Download PDFInfo
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- CN105323875B CN105323875B CN201510835091.5A CN201510835091A CN105323875B CN 105323875 B CN105323875 B CN 105323875B CN 201510835091 A CN201510835091 A CN 201510835091A CN 105323875 B CN105323875 B CN 105323875B
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Abstract
The electric rice cooker heated circuit of 12V~24V DC-voltage supplies, is related to household electrical appliances field of energy-saving technology.The present invention is to solve the existing irrational problem of electric rice cooker heated mode.The electric rice cooker heated circuit of 12V~24V DC-voltage supplies of the present invention utilizes the temperature variation that waveform output module collecting temperature sensor obtains, then the pulsewidth and frequency of output waveform are controlled according to the temperature variation, and then controls the heating power size variation of heating dish.Circuit is allowed to be constantly in the temperature that working condition to monitor heating dish in real time, in the absence of caused by traditional electric rice cooker heated circuit start the defects of surge current power consumption, closed-loop control is integrally formed, heating dish is allowed to be constantly in temperature-controlled state, make the heating dish real-time reception small-pulse effect DC pulse current of keeping warm mode, ensure the stable heating of heating dish, reach the purpose for reducing energy consumption, it is final to obtain the reasonable mode of heating that energy consumption is small, feedback is fast.
Description
Technical field
The invention belongs to field of household appliances, more particularly to a kind of electric cooker energy-saving circuit.
Background technology
Electric cooker is electrical appliance necessary to each family, during the work of the electric cooker used in present family,
Electric cooker improves rapidly temperature when starting, and after temperature reaches setting value and setting time, deenergization, then utilizes tradition
The function of mechanical thermostat TEMP detect the temperature change of electric rice cooker heated disk, when the temperature decreases, then open again
Dynamic heater, and power consumption can be increased by restarting, while the CPU of electric cooker controller can also produce delay, cause what is steamed
Rice is half-cooked.Therefore, the mode of heating of existing electric cooker is very unreasonable.
The content of the invention
The present invention is to solve the existing irrational problem of electric rice cooker heated mode, now provides 12V~24V DC voltages
The electric rice cooker heated circuit of power supply.
The electric rice cooker heated circuit of 12V~24V DC-voltage supplies, it includes：Electronic temperature transmitter 1, waveform output
Module 2, drive amplification module 3, power output module 4, filter capacitor C4 and fuse F1；
Electronic temperature transmitter 1 is used for the temperature for gathering electric rice cooker heated disk 5 in real time,
The temperature signal input of the temperature signal output end connection waveform output module 2 of electronic temperature transmitter 1, waveform
The Waveform Input end of the waveform output end of output module 2 connection drive amplification module 3, the amplified signal output of drive amplification module 3
The amplified signal input of end connection power output module 4, the power take-off connection electric rice cooker heated disk of power output module 4
5 power input, the power end of electric rice cooker heated disk 5 connect filter capacitor C4 positive pole and fuse F1 one end simultaneously,
The positive pole of fuse F1 other end access 12V~24V DC voltages, the negative pole and filter capacitor C4 of 12V~24V DC voltages
Negative pole with connecing power supply.
The electric rice cooker heated circuit of 12V~24V DC-voltage supplies of the present invention, employs electronic temperature transmitter
Direct collecting temperature replaces the temperature acquisition mode of traditional electric cooker mechanical thermostat hard contact, makes temperature acquisition speed more
It hurry up, precision is higher；Meanwhile the electronic temperature transmitter of the invention used completely eliminates the oxidation of original temperature controller hard contact
Problem, fundamentally solve the defects of equipment consumption is fast, cost has been saved from long-range use angle.
Also, the temperature variation that the present invention is obtained using waveform output module collecting temperature sensor, then basis should
Temperature variation controls the pulsewidth and frequency of output waveform, and then controls the heating power size variation of heating dish.The present invention from
When fundamentally changing traditional electric cooker temperature control, the mode of direct-electrifying again after being powered off to heating dish, but allow circuit to locate always
To monitor the temperature of heating dish in real time in working condition, connected in the absence of traditional electric rice cooker heated circuit contact caused by starting
The defects of surge current power consumption, closed-loop control is integrally formed, allows heating dish to be constantly in temperature-controlled state, make keeping warm mode
Heating dish real-time reception small-pulse effect DC pulse current, ensure the stable heating of heating dish, reach the purpose for reducing energy consumption, finally
Obtain the reasonable mode of heating that energy consumption is small, feedback is fast.
Brief description of the drawings
Fig. 1 is the structural representation of the electric rice cooker heated circuit of 12V~24V DC-voltage supplies of the present invention.
Embodiment
Embodiment one：Reference picture 1 illustrates present embodiment, 12V~24V direct currents described in present embodiment
The electric rice cooker heated circuit of power voltage supply, it includes：Electronic temperature transmitter 1, waveform output module 2, drive amplification module 3,
Power output module 4, filter capacitor C4 and fuse F1；
Electronic temperature transmitter 1 is used for the temperature for gathering electric rice cooker heated disk 5 in real time,
The temperature signal input of the temperature signal output end connection waveform output module 2 of electronic temperature transmitter 1, waveform
The Waveform Input end of the waveform output end of output module 2 connection drive amplification module 3, the amplified signal output of drive amplification module 3
The amplified signal input of end connection power output module 4, the power take-off connection electric rice cooker heated disk of power output module 4
5 power input, the power end of electric rice cooker heated disk 5 connect filter capacitor C4 positive pole and fuse F1 one end simultaneously,
The positive pole of fuse F1 other end access 12V~24V DC voltages, the negative pole and filter capacitor C4 of 12V~24V DC voltages
Negative pole with connecing power supply.
The electric rice cooker heated circuit of 12V~24V DC-voltage supplies described in present embodiment, is sensed using electron temperature
Device 1 gathers the temperature of electric rice cooker heated disk 5 in real time, is then forwarded to waveform output module 2, waveform output module 2 is according to electronics
The signal magnitude that temperature sensor 1 feeds back controls the frequency of output waveform and dutycycle, when feeding back weaker, then output waveform
Frequency and dutycycle it is stronger, then the waveform is amplified by drive amplification module 3, and is exported by power output module 4
To electric rice cooker heated disk 5, and then control the temperature of heating dish 5.
Embodiment two：Present embodiment is to 12V~24V DC-voltage supplies described in embodiment one
Electric rice cooker heated circuit be described further, in present embodiment, waveform output module 2 export SPWM ripples.
SPWM ripples are pulse width modulation wave, and the voltage and current of SPWM ripples is variable, can be with frequency and dutycycle
Change and change, be easy to embody the change of temperature.
Embodiment three：Present embodiment is to 12V~24V DC-voltage supplies described in embodiment one
Electric rice cooker heated circuit be described further, in present embodiment, temperature given value, ripple are embedded with waveform output module 2
Also include in shape output module 2 with lower unit：
Temperature collecting cell：The temperature signal that collection electronic temperature transmitter 1 exports in real time, and the temperature signal is sent
To comparing unit,
Comparing unit：By temperature signal compared with temperature given value, and comparative result is sent to waveform control list
Member,
Waveform control unit：The dutycycle and frequency of the comparative result adjustment output waveform obtained according to comparing unit, and
Output waveform.
The working cell in waveform output module 2 is specifically disclosed in present embodiment, judges to work as using comparing unit
Preceding heating dish state of temperature, i.e., whether need to improve heating power, if the temperature signal fed back to is weak, heating dish Current Temperatures
Low, the difference obtained more afterwards with temperature given value then increases the frequency and dutycycle of waveform, and then control heating dish work(with regard to big
Rate strengthens, on the contrary then reduce, and the course of work is simple and convenient, reduces development difficulty.
Embodiment four：Present embodiment is to 12V~24V DC-voltage supplies described in embodiment three
Electric rice cooker heated circuit be described further, in present embodiment, waveform output module 2 is microcomputer chip.
Embodiment five：Present embodiment is to 12V~24V DC-voltage supplies described in embodiment one
Electric rice cooker heated circuit be described further, in present embodiment, it also includes：Filter capacitor C1, filter capacitor C2, filtering
Electric capacity C3, mu balanced circuit 6, resistance R1, resistance R2, resistance R3, switch S1, switch S2 and diode D1；
The voltage input end of mu balanced circuit 6 and filter capacitor C1 positive pole connect positive source, the electricity of mu balanced circuit 6 simultaneously
Pressure output end connects the voltage input end of resistance R3 one end, filter capacitor C3 positive poles and drive amplification module 3, resistance R3 simultaneously
The other end simultaneously connect filter capacitor C2 positive poles, resistance R2 one end and switch S1 moved end, resistance R2 the other end connection
Diode D1 negative pole, S1 static side connection resistance R1 one end is switched, resistance R1 other end connection electric rice cooker heated disk 5
Power end, filter capacitor C1 negative pole, filter capacitor C2 negative pole, filter capacitor C3 negative pole and diode D1 positive pole simultaneously
With connecting power supply, switch S2 is connected in parallel on resistance R1 both ends.
It is waveform output module 2, drive amplification module 3 and power output module 4 that the increased circuit of present embodiment, which is used for,
Stable voltage is provided.
Claims (5)
- The electric rice cooker heated circuit of 1.12V~24V DC-voltage supplies, it is characterised in that it includes：Electronic temperature transmitter (1), waveform output module (2), drive amplification module (3), power output module (4), filter capacitor C4 and fuse F1；Electronic temperature transmitter (1) is used for the temperature for gathering electric rice cooker heated disk (5) in real time,The temperature signal input of the temperature signal output end connection waveform output module (2) of electronic temperature transmitter (1),The Waveform Input end of the waveform output end connection drive amplification module (3) of waveform output module (2),The amplified signal input of the amplified signal output end connection power output module (4) of drive amplification module (3),The power input of the power take-off connection electric rice cooker heated disk (5) of power output module (4),The power end of electric rice cooker heated disk (5) connects filter capacitor C4 positive pole and fuse F1 one end simultaneously,The positive pole of fuse F1 other end access 12V~24V DC voltages,The negative pole of 12V~24V DC voltages and filter capacitor C4 negative pole with connecing power supply,The signal magnitude that waveform output module (2) feeds back according to electronic temperature transmitter (1) come control the frequency of output waveform and Dutycycle, when feeding back weaker, then the frequency of output waveform and dutycycle are stronger.
- 2. the electric rice cooker heated circuit of 12V~24V DC-voltage supplies according to claim 1, it is characterised in that waveform Output module (2) exports SPWM ripples.
- 3. the electric rice cooker heated circuit of 12V~24V DC-voltage supplies according to claim 1, it is characterised in that waveform Temperature given value is embedded with output module (2), is also included in waveform output module (2) with lower unit：Temperature collecting cell：The temperature signal of collection electronic temperature transmitter (1) output in real time, and the temperature signal is sent to Comparing unit,Comparing unit：By temperature signal compared with temperature given value, and comparative result is sent to waveform control unit,Waveform control unit：The dutycycle and frequency of the comparative result adjustment output waveform obtained according to comparing unit, and export Waveform.
- 4. the electric rice cooker heated circuit of 12V~24V DC-voltage supplies according to claim 3, it is characterised in that waveform Output module (2) is microcomputer chip.
- 5. the electric rice cooker heated circuit of 12V~24V DC-voltage supplies according to claim 1, it is characterised in that it is also Including：Filter capacitor C1, filter capacitor C2, filter capacitor C3, mu balanced circuit (6), resistance R1, resistance R2, resistance R3, switch S1, switch S2 and diode D1；The voltage input end of mu balanced circuit (6) and filter capacitor C1 positive pole connect positive source simultaneously,The voltage output end of mu balanced circuit (6) connects resistance R3 one end, filter capacitor C3 positive poles and drive amplification module simultaneously (3) voltage input end,The resistance R3 other end connects the moved end of filter capacitor C2 positive poles, resistance R2 one end and switch S1 simultaneously,Resistance R2 other end connection diode D1 negative pole,S1 static side connection resistance R1 one end is switched,The power end of resistance R1 other end connection electric rice cooker heated disk (5),Filter capacitor C1 negative pole, filter capacitor C2 negative pole, filter capacitor C3 negative pole and diode D1 positive pole connect simultaneously With connecing power supply,Switch S2 is connected in parallel on resistance R1 both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510835091.5A CN105323875B (en) | 2015-11-25 | 2015-11-25 | The electric rice cooker heated circuit of 12V~24V DC-voltage supplies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510835091.5A CN105323875B (en) | 2015-11-25 | 2015-11-25 | The electric rice cooker heated circuit of 12V~24V DC-voltage supplies |
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| Publication Number | Publication Date |
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| CN105323875A CN105323875A (en) | 2016-02-10 |
| CN105323875B true CN105323875B (en) | 2018-01-30 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107581888B (en) * | 2016-07-07 | 2020-08-04 | 佛山市顺德区美的电热电器制造有限公司 | Cooking temperature control method and device of electric cooker and electric cooker |
| CN106900086A (en) * | 2017-03-23 | 2017-06-27 | 福州丹诺西诚电子科技有限公司 | A kind of heating means and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6246831B1 (en) * | 1999-06-16 | 2001-06-12 | David Seitz | Fluid heating control system |
| CN201623883U (en) * | 2010-02-05 | 2010-11-03 | 王洪海 | Special electromagnetic oven for locomotive |
| CN203136219U (en) * | 2013-01-04 | 2013-08-14 | 西安奥邦科技有限责任公司 | Monitoring system of large-power parallel connected/series connected resonant intermediate frequency power supply |
| CN104902601A (en) * | 2015-05-12 | 2015-09-09 | 长沙金定信息技术有限公司 | Novel variable frequency heating system |
-
2015
- 2015-11-25 CN CN201510835091.5A patent/CN105323875B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6246831B1 (en) * | 1999-06-16 | 2001-06-12 | David Seitz | Fluid heating control system |
| CN201623883U (en) * | 2010-02-05 | 2010-11-03 | 王洪海 | Special electromagnetic oven for locomotive |
| CN203136219U (en) * | 2013-01-04 | 2013-08-14 | 西安奥邦科技有限责任公司 | Monitoring system of large-power parallel connected/series connected resonant intermediate frequency power supply |
| CN104902601A (en) * | 2015-05-12 | 2015-09-09 | 长沙金定信息技术有限公司 | Novel variable frequency heating system |
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