CN111396934A - Pulse ignition controller and ignition delay control method for dual-delay thermoelectric type kitchen range - Google Patents
Pulse ignition controller and ignition delay control method for dual-delay thermoelectric type kitchen range Download PDFInfo
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- CN111396934A CN111396934A CN202010222811.1A CN202010222811A CN111396934A CN 111396934 A CN111396934 A CN 111396934A CN 202010222811 A CN202010222811 A CN 202010222811A CN 111396934 A CN111396934 A CN 111396934A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/10—Arrangement or mounting of ignition devices
- F24C3/103—Arrangement or mounting of ignition devices of electric ignition devices
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Abstract
The invention discloses a pulse ignition controller of a double-delay thermoelectric stove, which comprises a digital-analog integrated chip, an oscillation boosting unit and an ignition unit, wherein the digital-analog integrated chip is electrically connected with a battery, an ignition switch and a double-coil electromagnetic valve, the oscillation boosting unit is electrically connected with the digital-analog integrated chip, and the ignition unit is electrically connected with the oscillation boosting unit and an ignition needle. The invention also discloses an ignition delay control method based on the controller, which comprises the following steps: (1) the digital-analog integrated chip detects whether an ignition switch is pressed down, if yes, a level signal is provided, the oscillation boosting unit is started to work, so that the ignition unit generates high voltage, and the ignition unit is discharged and ignited with the combustor shell through an ignition needle; (2) when the ignition switch is switched off, a level signal is continuously provided, and ignition is delayed; and the digital timing module starts to time, and controls the oscillation boosting unit to stop igniting after the timing time is up. The invention has accurate timing, namely accurate ignition delay and suction valve delay, and improves the reliability and quality.
Description
Technical Field
The invention relates to a thermoelectric cooking utensil, in particular to a pulse ignition controller and an ignition delay control method for a dual-delay thermoelectric cooking utensil.
Background
At present, domestic household gas cookers adopt two flame-out safety protection devices, one of which is composed of a thermocouple probe and a special non-self-suction thermocouple electromagnetic valve and is also called as a thermoelectric flame-out safety protection device; and the other one is composed of a flame ion probe and a self-suction electromagnetic valve, and is also called a self-suction electromagnetic valve type flameout safety protection device.
Under normal combustion conditions, the thermocouple probe generates a thermoelectric force after being heated by flame, the thermoelectric force is applied to the thermocouple solenoid valve coil, and the current flowing through the solenoid valve coil keeps the solenoid valve in an open state. Since the thermoelectric force is established after the thermocouple probe is heated by the flame for a certain period of time (about 8 seconds), if the user presses the switch to open the solenoid valve and releases the switch immediately after ignition, the solenoid valve is closed due to insufficient holding current to cause the cooktop to stall.
In addition, when a user presses a switch to open an electromagnetic valve and a pulse ignition controller starts discharging ignition, if the user releases a hand under the condition of no ignition, the discharging ignition is stopped, and inconvenience is brought to the user. However, the timing circuit unit composed of discrete components such as a transistor, a resistor, and a capacitor has the following disadvantages:
(1) the delay is realized by the charge and discharge of the capacitor, and after the capacitor is used for a period of time, the charge and discharge time of the capacitor has a great error, so that the delay time is inaccurate;
(2) the combination of various discrete components has many components, and the accuracy of time delay is difficult to ensure due to the difference in parameters and the large dispersion;
(3) after the used battery is used for a long time, the electric energy is attenuated continuously, the voltage is reduced, the change of the timing time is very large, and the delay time is inaccurate.
In summary, the timing circuit units currently used in the market have the problem of low timing precision, i.e. inaccurate delay.
Disclosure of Invention
In view of the above disadvantages, the present invention aims to provide a pulse ignition controller for a dual-delay thermoelectric cooker and an ignition delay control method, which have accurate timing, that is, accurate ignition delay and suction valve delay, and not only solve the problems of poor timing precision and variation of timing time with the variation of battery voltage of the existing controller, but also improve the reliability and quality of products, save electric energy, reduce the size of the controller, reduce the cost, and enhance the user experience.
The technical scheme adopted by the invention to achieve the aim is as follows:
the utility model provides a two time delay thermoelectric type cooking utensils pulse ignition controllers which characterized in that includes:
the digital-analog integrated chip is respectively and electrically connected with the battery, the ignition switch and the double-coil electromagnetic valve;
the oscillation boosting unit is electrically connected with the digital-analog integrated chip;
and the ignition unit is electrically connected with the oscillation boosting unit and the ignition needle respectively.
As a further improvement of the invention, a power supply voltage stabilizing module, an electromagnetic valve driving control module and a digital timing module are integrated in the digital-analog integrated chip.
As a further improvement of the present invention, the power supply voltage stabilizing module is connected to a peripheral power supply voltage stabilizing unit, the peripheral power supply voltage stabilizing unit includes a capacitor C5, a capacitor C6, a capacitor C8, a capacitor C11, an inductor L1 and a diode D8, the capacitor C5 and the capacitor C6, and the capacitor C8 and the capacitor C11 are respectively connected in parallel to form a parallel branch, the parallel branch formed by the capacitor C5 and the capacitor C6 in parallel is connected to one end of the inductor L1, the other end of the inductor L1 is respectively connected to the anode of the diode D8 and the VCC pin of the digital-analog integrated chip, and the parallel branch formed by the capacitor C8 and the capacitor C11 in parallel is respectively connected to the cathode of the diode D8 and the VDD pin of the digital-analog integrated chip.
As a further improvement of the present invention, the ignition switch includes a left furnace switch and a right furnace switch, the oscillation voltage-boosting unit includes a left furnace oscillation voltage-boosting unit and a right furnace oscillation voltage-boosting unit, the ignition unit includes a left furnace ignition unit electrically connected to the left furnace oscillation voltage-boosting unit and a right furnace ignition unit electrically connected to the right furnace oscillation voltage-boosting unit, and the dual coil electromagnetic valve includes a left furnace dual coil electromagnetic valve and a right furnace dual coil electromagnetic valve.
The ignition delay control method based on the double-delay thermoelectric type stove pulse ignition controller is characterized by comprising the following steps of:
(1) the digital-analog integrated chip detects whether an ignition switch is pressed down in real time, and if the ignition switch is pressed down, the digital-analog integrated chip provides a level signal, starts the oscillation boosting unit to work, enables the ignition unit to generate high voltage, and is discharged and ignited with the combustor shell through an ignition needle;
(2) when the ignition switch is switched off, a level signal is continuously provided, and ignition is delayed; and meanwhile, a digital timing module in the digital-analog integrated chip starts timing, and when the timing time of delayed ignition is reached, the digital-analog integrated chip outputs a level signal to control the oscillation boosting unit to stop ignition, so that the ignition is finished.
As a further improvement of the present invention,
in the step (1), the digital-analog integrated chip detects whether an ignition switch is pressed down in real time, and if the ignition switch is pressed down, the digital-analog integrated chip provides a low level signal, starts the oscillation boosting unit to work, enables the ignition unit to generate high voltage, and discharges and ignites through an ignition needle and a combustor shell;
in the step (2), when the ignition switch is turned off, a low-level signal is continuously provided, and ignition is delayed; and meanwhile, a digital timing module in the digital-analog integrated chip starts timing, and when the timing time of delayed ignition is reached, the digital-analog integrated chip outputs a high-level signal to control the oscillation boosting unit to stop ignition, so that the ignition is finished.
As a further improvement of the present invention,
in the step (1), the digital-analog integrated chip detects whether an ignition switch is pressed down in real time, and if the ignition switch is pressed down, the digital-analog integrated chip provides a high level signal to start the oscillation boosting unit to work, so that the ignition unit generates high voltage and discharges and ignites through an ignition needle and a combustor shell;
in the step (2), when the ignition switch is turned off, a high-level signal is continuously provided, and ignition is delayed; meanwhile, a digital timing module in the digital-analog integrated chip starts timing, and when the timing time of delayed ignition is reached, the digital-analog integrated chip outputs a low-level signal to control the oscillation boosting unit to stop ignition, so that ignition is finished.
As a further improvement of the present invention,
the step (1) further comprises the following steps: the digital-analog integrated chip is internally provided with an electromagnetic valve driving control module which is conducted to provide a maintaining current for the double-coil electromagnetic valve so as to keep the double-coil electromagnetic valve in an open state;
the step (2) further comprises the following steps: the digital timing module in the digital-analog integrated chip starts timing, when timing is finished until the double-coil electromagnetic valve is kept in an open state and reaches timing time, the electromagnetic valve driving control module is disconnected in the digital-analog integrated chip, the double-coil electromagnetic valve is kept open by means of thermoelectric force generated by a thermocouple probe, and then the digital-analog integrated chip and other circuit units enter a low-power-consumption mode.
As a further improvement of the invention, the method also comprises the following steps:
(3) when accidental flameout occurs, the thermoelectric force disappears, and the double-coil electromagnetic valve is automatically closed.
The invention has the beneficial effects that:
(1) accurate timing and ignition delay: the digital-analog integrated chip integrated with various functional modules is additionally arranged, the ignition delay time is controlled by adopting a mode of combining high or low level signals and digital timing module timing, the traditional mode of realizing delay by adopting capacitance charging and discharging is replaced, the direct influence of various elements such as capacitance is avoided, and the ignition delay time is directly and precisely controlled by the high or low level signals provided by the digital-analog integrated chip and the digital timing module timing, so that the aim of accurate timing, namely accurate delay is fulfilled.
(2) The timing is accurate, and the time delay of the suction valve is accurate: by additionally arranging the digital-analog integrated chip integrated with various functional modules, after ignition is successful, the digital-analog integrated chip provides current maintaining time (namely delay time) for the double-coil electromagnetic valve, and the digital timing module is used for accurately timing, namely, the suction valve is accurately delayed, so that the phenomena of valve closing flameout caused by short delay time or battery power waste caused by long delay time are avoided.
(3) Saving power (battery), reducing ineffective ignition and suction valve time: the digital-analog integrated chip directly supplies power to the digital timing module, and compared with the traditional mode that a battery directly charges and discharges a capacitor, the digital-analog integrated chip can obviously save electric energy; the ignition delay and the suction valve delay are accurate every time, and the ineffective ignition and suction valve time is reduced.
(4) Reduce the volume, improve the reliability, reduce cost: a plurality of discrete components such as triodes, resistors, capacitors and the like are reduced, so that the overall volume of the controller is obviously reduced, and the component cost is obviously reduced; the reliability is obviously improved by reducing the influence of various factors of the elements.
(5) The digital-analog integrated chip has a voltage stabilizing function: under the voltage stabilizing effect of a power supply voltage stabilizing module in the digital-analog integrated chip, a peripheral power supply voltage stabilizing unit is additionally arranged, and various interferences are filtered by the peripheral power supply voltage stabilizing unit, so that the functions of boosting, stabilizing and maintaining energy are provided for the power supply voltage stabilizing module.
(6) Anti-interference: the capacitor in the voltage stabilizing unit of the peripheral power supply is used for smoothing various fluctuations, such as static damage resistance and terminal discharge.
(7) The power consumption is low: in a standby state, the current is less than or equal to 4 uA.
The above is an overview of the technical solutions of the present invention, and the present invention is further described below with reference to the accompanying drawings and the detailed description thereof.
Drawings
FIG. 1 is a block diagram of the operation of a controller according to the present invention, wherein the inner portion of the dashed line box is a circuit unit inside the controller, and the outer portion of the dashed line box is an external component connected to the controller;
FIG. 2 is a schematic diagram of the combination of a digital-analog integrated chip and a peripheral power supply voltage stabilization unit according to the present invention;
FIG. 3 is a schematic diagram of a left furnace ignition unit, a right furnace ignition unit, a left furnace thermocouple probe circuit and a right furnace thermocouple probe circuit of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purposes, the following detailed description of the embodiments of the present invention is provided with the accompanying drawings and the preferred embodiments.
Referring to fig. 1, an embodiment of the present invention provides a pulse ignition controller for a dual-delay thermoelectric cooker, including:
the digital-analog integrated chip U1 is electrically connected with the battery, the ignition switch and the double-coil electromagnetic valve respectively, and specifically, the model of the digital-analog integrated chip U1 is BW1C 2L;
the oscillation boosting unit is electrically connected with the digital-analog integrated chip U1;
and the ignition unit is electrically connected with the oscillation boosting unit and the ignition needle respectively. The schematic diagram for the ignition unit is shown in fig. 3.
Of course, the controller of this embodiment further includes a connection harness and an ignition high-voltage output terminal (or high-voltage line) connected to external parts.
In this embodiment, for example, the cooking appliance includes two furnace ends, and correspondingly, the ignition switch includes a left furnace switch and a right furnace switch, the oscillation voltage-boosting unit includes a left furnace oscillation voltage-boosting unit and a right furnace oscillation voltage-boosting unit, the ignition unit includes a left furnace ignition unit electrically connected to the left furnace oscillation voltage-boosting unit and a right furnace ignition unit electrically connected to the right furnace oscillation voltage-boosting unit, the dual-coil electromagnetic valve includes a left furnace dual-coil electromagnetic valve and a right furnace dual-coil electromagnetic valve, the left furnace dual-coil electromagnetic valve is connected to the left furnace thermocouple probe, and the right furnace dual-coil electromagnetic valve is connected to the right furnace thermocouple probe. The connection between each unit and the digital-analog integrated chip U1 is shown in fig. 2 and fig. 3.
In this embodiment, a power supply voltage stabilizing module, an electromagnetic valve driving control module and a digital timing module are integrated in the digital-analog integrated chip U1. The power supply voltage stabilizing module provides a voltage stabilizing power supply for the digital-analog integrated chip U1, the electromagnetic valve driving control module controls the opening and the closing of the electromagnetic valve, and the digital timing module times the ignition delay time and the suction valve delay time so as to achieve the purpose of accurately controlling the delay.
Meanwhile, the power supply voltage stabilizing module is connected with a peripheral power supply voltage stabilizing unit, as shown in fig. 2, the peripheral power supply voltage stabilizing unit includes a capacitor C5, a capacitor C6, a capacitor C8, a capacitor C11, an inductor L1 and a diode D8, the capacitor C5 and the capacitor C6, and the capacitor C8 and the capacitor C11 are respectively connected in parallel to form a parallel branch, the parallel branch formed by the capacitor C5 and the capacitor C6 in parallel is connected to one end of the inductor L, the other end of the inductor L is respectively connected to the anode of the diode D8 and the VCC pin of the digital-analog integrated chip U1, the parallel branch formed by the capacitor C8 and the capacitor C11 in parallel is respectively connected to the cathode of the diode D8 and the VDD pin of the digital-analog integrated chip U1, specifically, various interferences can be filtered by the capacitor C5 and the capacitor C6 to provide an energy maintaining effect for the power supply voltage stabilizing inductor L, and a voltage boosting and voltage stabilizing effect and a voltage stabilizing effect by the capacitor C8 and a filter.
The pulse ignition controller for the double-delay thermoelectric type cooker is suitable for cookers of thermoelectric type flameout safety protection devices. The ignition delay function and the function of providing the maintaining current for the electromagnetic valve in a fixed time after ignition (namely the suction valve delay function) are provided.
Specifically, a digital-analog integrated chip integrated with a power supply voltage stabilizing module, an electromagnetic valve driving control module and a digital timing module is additionally arranged in the controller to accurately control the ignition delay time, so that the traditional mode of realizing delay by adopting capacitance charging and discharging is replaced, the direct influence of various elements such as capacitance is avoided, the ignition delay time is directly and accurately controlled by the digital-analog integrated chip, and the purposes of accurate timing and accurate ignition delay are achieved.
Meanwhile, a special non-self-suction thermocouple electromagnetic valve is adopted and provided with two groups of coils (namely a double-coil electromagnetic valve) so as to realize zero-second starting. After the ignition is successful, the digital-analog integrated chip provides the time (namely delay time) for maintaining the current for the double-coil electromagnetic valve, and the digital timing module is used for accurately timing, namely the time delay of the suction valve is accurate, so that the phenomena of valve closing flameout caused by short delay time or battery power waste caused by long delay time can be avoided.
The embodiment also provides an ignition delay control method based on the double-delay thermoelectric type cooker pulse ignition controller, which comprises the following steps:
(1) the digital-analog integrated chip U1 detects whether an ignition switch is pressed in real time, if the ignition switch is pressed, the digital-analog integrated chip U1 provides a level signal, starts the oscillation boosting unit to work, enables the ignition unit to generate high voltage, and discharges and ignites through an ignition needle and the combustor shell;
(2) when the ignition switch is turned off, a level signal is continuously provided, and delayed ignition is carried out, specifically, delayed ignition is carried out for 3-5 seconds; meanwhile, a digital timing module in the digital-analog integrated chip U1 starts timing, and when the timing time of delayed ignition is reached, the digital-analog integrated chip U1 outputs a level signal to control the oscillation boosting unit to stop ignition, so that the ignition is finished.
Specifically, in the step (1), the digital-analog integrated chip detects whether an ignition switch is pressed down in real time, and if the ignition switch is pressed down, the digital-analog integrated chip provides a low level signal to start the oscillation boosting unit to work, so that the ignition unit generates high voltage and discharges and ignites through the ignition needle and the combustor shell;
in the step (2), when the ignition switch is turned off, a low-level signal is continuously provided, and ignition is delayed; and meanwhile, a digital timing module in the digital-analog integrated chip starts timing, and when the timing time of delayed ignition is reached, the digital-analog integrated chip outputs a high-level signal to control the oscillation boosting unit to stop ignition, so that the ignition is finished.
Or,
in the step (1), the digital-analog integrated chip detects whether an ignition switch is pressed down in real time, and if the ignition switch is pressed down, the digital-analog integrated chip provides a high level signal to start the oscillation boosting unit to work, so that the ignition unit generates high voltage and discharges and ignites through an ignition needle and a combustor shell;
in the step (2), when the ignition switch is turned off, a high-level signal is continuously provided, and ignition is delayed; meanwhile, a digital timing module in the digital-analog integrated chip starts timing, and when the timing time of delayed ignition is reached, the digital-analog integrated chip outputs a low-level signal to control the oscillation boosting unit to stop ignition, so that ignition is finished.
When the stove comprises two stove heads, the digital-analog integrated chip U1 detects that any one of the left stove switch and the right stove switch is pressed down or simultaneously pressed down, and the step (1) is executed.
In the embodiment, the digital-analog integrated chip integrated with multiple functional modules is additionally arranged, the ignition delay time is controlled by adopting a mode of combining high or low level signals and digital timing module timing, the traditional mode of realizing delay by adopting capacitance charging and discharging is replaced, the direct influence of various elements such as capacitance and the like is avoided, and the ignition delay time is directly and precisely controlled by the high or low level signals provided by the digital-analog integrated chip and the digital timing module timing, so that the accurate timing is achieved, namely the purpose of accurate ignition delay is achieved.
Meanwhile, aiming at the problem that the electromagnetic valve is closed due to insufficient holding current and causes flameout of the cooker after a user presses the switch to open the electromagnetic valve and ignites the ignition, the digital-analog integrated chip U1 integrated with the power supply voltage stabilizing module, the electromagnetic valve driving control module and the digital timing module plays a role in the embodiment, and the holding current is provided for the other group of coils of the electromagnetic valve after the electromagnetic valve is opened so that the electromagnetic valve is kept in an open state, and the current only lasts for a period of time (namely, the timing time is about 10 seconds), so that the valve suction delay function is achieved. The specific time delay control method of the suction valve comprises the following steps:
the step (1) further comprises the following steps: the digital-analog integrated chip U1 is internally provided with an electromagnetic valve driving control module which is conducted to provide a maintaining current for the double-coil electromagnetic valve so as to keep the double-coil electromagnetic valve in an open state;
the step (2) further comprises the following steps: the digital timing module in the digital-analog integrated chip U1 starts timing, when the timing reaches the timing time when the double-coil electromagnetic valve is kept in an open state, the electromagnetic valve driving control module is disconnected in the digital-analog integrated chip U1, the double-coil electromagnetic valve is kept open by means of thermoelectric potential generated by a thermocouple probe, and then the digital-analog integrated chip U1 and other circuit units enter a low power consumption mode.
Therefore, after the ignition function is achieved, the controller provides the time (namely the delay time) for maintaining the current for the double-coil electromagnetic valve, the digital timing module is used for accurately timing, namely the valve suction delay is accurate, and the phenomenon that the valve is closed and flameout is avoided due to short delay time or the waste of the battery power is avoided due to long delay time.
The ignition delay control method of the present embodiment further includes the steps of:
(3) when accidental flameout occurs, the thermoelectric force disappears, and the double-coil electromagnetic valve is automatically closed, so that the purpose of flameout safety protection is achieved.
The present embodiment has the following advantages:
(1) accurate timing and ignition delay: the digital-analog integrated chip integrated with various functional modules is additionally arranged, the ignition delay time is controlled by adopting a mode of combining high or low level signals and digital timing module timing, the traditional mode of realizing delay by adopting capacitance charging and discharging is replaced, the direct influence of various elements such as capacitance is avoided, and the ignition delay time is directly and precisely controlled by the high or low level signals provided by the digital-analog integrated chip and the digital timing module timing, so that the aim of accurate timing, namely accurate delay is fulfilled.
(2) The timing is accurate, and the time delay of the suction valve is accurate: by additionally arranging the digital-analog integrated chip integrated with various functional modules, after ignition is successful, the digital-analog integrated chip provides current maintaining time (namely delay time) for the double-coil electromagnetic valve, and the digital timing module is used for accurately timing, namely, the suction valve is accurately delayed, so that the phenomena of valve closing flameout caused by short delay time or battery power waste caused by long delay time are avoided.
(3) Saving power (battery), reducing ineffective ignition and suction valve time: the digital-analog integrated chip directly supplies power to the digital timing module, and compared with the traditional mode that a battery directly charges and discharges a capacitor, the digital-analog integrated chip can obviously save electric energy; the ignition delay and the suction valve delay are accurate every time, and the ineffective ignition and suction valve time is reduced.
(4) Reduce the volume, improve the reliability, reduce cost: a plurality of discrete components such as triodes, resistors, capacitors and the like are reduced, so that the overall volume of the controller is obviously reduced, and the component cost is obviously reduced; the reliability is obviously improved by reducing the influence of various factors of the elements.
(5) The digital-analog integrated chip has a voltage stabilizing function: under the voltage stabilizing effect of a power supply voltage stabilizing module in the digital-analog integrated chip, a peripheral power supply voltage stabilizing unit is additionally arranged, and various interferences are filtered by the peripheral power supply voltage stabilizing unit, so that the functions of boosting, stabilizing and maintaining energy are provided for the power supply voltage stabilizing module.
(6) Anti-interference: the capacitor in the voltage stabilizing unit of the peripheral power supply is used for smoothing various fluctuations, such as static damage resistance and terminal discharge.
(7) The power consumption is low: in a standby state, the current is less than or equal to 4 uA.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that other structures obtained by using the same or similar technical features as the above-described embodiments of the present invention are within the protection scope of the present invention.
Claims (9)
1. The utility model provides a two time delay thermoelectric type cooking utensils pulse ignition controllers which characterized in that includes:
the digital-analog integrated chip is respectively and electrically connected with the battery, the ignition switch and the double-coil electromagnetic valve;
the oscillation boosting unit is electrically connected with the digital-analog integrated chip;
and the ignition unit is electrically connected with the oscillation boosting unit and the ignition needle respectively.
2. The pulse ignition controller for the dual-delay thermoelectric cooking utensils of claim 1, wherein a power voltage stabilizing module, an electromagnetic valve driving control module and a digital timing module are integrated inside the digital-analog integrated chip.
3. The pulse ignition controller of a dual-delay thermoelectric cooking stove according to claim 2, wherein the power supply voltage stabilization module is connected with a peripheral power supply voltage stabilization unit, the peripheral power supply voltage stabilization unit comprises a capacitor C5, a capacitor C6, a capacitor C8, a capacitor C11, an inductor L1 and a diode D8, the capacitor C5 and the capacitor C6, and the capacitor C8 and the capacitor C11 are respectively connected in parallel to form a parallel branch, the parallel branch formed by the capacitor C5 and the capacitor C6 in parallel is connected to one end of the inductor L1, the other end of the inductor L1 is respectively connected to the anode of the diode D8 and the VCC pin of the digital-analog integrated chip, and the parallel branch formed by the capacitor C8 and the capacitor C11 in parallel is respectively connected to the cathode of the diode D8 and the VDD pin of the digital-analog integrated chip.
4. The dual-delay thermoelectric stove pulse ignition controller according to claim 1, wherein the ignition switch comprises a left stove switch and a right stove switch, the oscillation boosting unit comprises a left stove oscillation boosting unit and a right stove oscillation boosting unit, the ignition unit comprises a left stove ignition unit electrically connected with the left stove oscillation boosting unit and a right stove ignition unit electrically connected with the right stove oscillation boosting unit, and the dual-coil solenoid valve comprises a left stove dual-coil solenoid valve and a right stove dual-coil solenoid valve.
5. The ignition delay control method based on the pulse ignition controller of the double-delay thermoelectric type cooker is characterized by comprising the following steps of:
(1) the digital-analog integrated chip detects whether an ignition switch is pressed down in real time, and if the ignition switch is pressed down, the digital-analog integrated chip provides a level signal, starts the oscillation boosting unit to work, enables the ignition unit to generate high voltage, and is discharged and ignited with the combustor shell through an ignition needle;
(2) when the ignition switch is switched off, a level signal is continuously provided, and ignition is delayed; and meanwhile, a digital timing module in the digital-analog integrated chip starts timing, and when the timing time of delayed ignition is reached, the digital-analog integrated chip outputs a level signal to control the oscillation boosting unit to stop ignition, so that the ignition is finished.
6. The ignition delay control method according to claim 5,
in the step (1), the digital-analog integrated chip detects whether an ignition switch is pressed down in real time, and if the ignition switch is pressed down, the digital-analog integrated chip provides a low level signal, starts the oscillation boosting unit to work, enables the ignition unit to generate high voltage, and discharges and ignites through an ignition needle and a combustor shell;
in the step (2), when the ignition switch is turned off, a low-level signal is continuously provided, and ignition is delayed; and meanwhile, a digital timing module in the digital-analog integrated chip starts timing, and when the timing time of delayed ignition is reached, the digital-analog integrated chip outputs a high-level signal to control the oscillation boosting unit to stop ignition, so that the ignition is finished.
7. The ignition delay control method according to claim 5,
in the step (1), the digital-analog integrated chip detects whether an ignition switch is pressed down in real time, and if the ignition switch is pressed down, the digital-analog integrated chip provides a high level signal to start the oscillation boosting unit to work, so that the ignition unit generates high voltage and discharges and ignites through an ignition needle and a combustor shell;
in the step (2), when the ignition switch is turned off, a high-level signal is continuously provided, and ignition is delayed; meanwhile, a digital timing module in the digital-analog integrated chip starts timing, and when the timing time of delayed ignition is reached, the digital-analog integrated chip outputs a low-level signal to control the oscillation boosting unit to stop ignition, so that ignition is finished.
8. The ignition delay control method according to claim 5,
the step (1) further comprises the following steps: the digital-analog integrated chip is internally provided with an electromagnetic valve driving control module which is conducted to provide a maintaining current for the double-coil electromagnetic valve so as to keep the double-coil electromagnetic valve in an open state;
the step (2) further comprises the following steps: the digital timing module in the digital-analog integrated chip starts timing, when timing is finished until the double-coil electromagnetic valve is kept in an open state and reaches timing time, the electromagnetic valve driving control module is disconnected in the digital-analog integrated chip, the double-coil electromagnetic valve is kept open by means of thermoelectric force generated by a thermocouple probe, and then the digital-analog integrated chip and other circuit units enter a low-power-consumption mode.
9. The ignition delay control method according to claim 8, characterized by further comprising the step of:
(3) when accidental flameout occurs, the thermoelectric force disappears, and the double-coil electromagnetic valve is automatically closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010222811.1A CN111396934A (en) | 2020-03-26 | 2020-03-26 | Pulse ignition controller and ignition delay control method for dual-delay thermoelectric type kitchen range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010222811.1A CN111396934A (en) | 2020-03-26 | 2020-03-26 | Pulse ignition controller and ignition delay control method for dual-delay thermoelectric type kitchen range |
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| CN112228911A (en) * | 2020-09-30 | 2021-01-15 | 华帝股份有限公司 | Ignition circuit, ignition control method using ignition circuit, stove and double-stove-head stove |
| CN113251448A (en) * | 2021-06-05 | 2021-08-13 | 迅达科技集团股份有限公司 | Timer for controlling on and off of thermocouple electromagnetic valve |
| CN114046542A (en) * | 2021-11-02 | 2022-02-15 | 广东华美骏达电器有限公司 | Stove pulse integrated circuit and stove ignition control method |
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