CN113251448A - Timer for controlling on and off of thermocouple electromagnetic valve - Google Patents
Timer for controlling on and off of thermocouple electromagnetic valve Download PDFInfo
- Publication number
- CN113251448A CN113251448A CN202110627710.7A CN202110627710A CN113251448A CN 113251448 A CN113251448 A CN 113251448A CN 202110627710 A CN202110627710 A CN 202110627710A CN 113251448 A CN113251448 A CN 113251448A
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- Prior art keywords
- circuit
- thermocouple
- controller
- timer
- electrically connected
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- 238000001514 detection method Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 11
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 238000010411 cooking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a timer for controlling the on and off of a thermocouple electromagnetic valve, which comprises a controller, a negative voltage generating circuit, a valve breaking circuit, a valve sucking circuit, an I/O input/output circuit, a booster circuit, a dry battery voltage detection circuit electrically connected between the controller and a dry battery, and a switch signal input circuit electrically connected between the controller and a touch switch. The timer provides stable attracting current for the thermocouple, increases the service life of the household gas cooker battery, reduces the requirements on the pulse igniter, reduces the cost and simplifies the wiring of a control system.
Description
Technical Field
The invention relates to the field of electromagnetic valve control of gas cookers, in particular to a timer capable of controlling on and off of a thermocouple electromagnetic valve.
Background
At present, most of functions of controlling on (zero-second pull-in) of a thermocouple electromagnetic valve of a gas cooker are integrated on a cooker pulse igniter, and only the cooker pulse igniter with specific functions of specific models has the functions of connecting and disconnecting the thermocouple electromagnetic valve. The timer for gas cooker usually has only the function of disconnecting the thermocouple electromagnetic valve and does not have the function of connecting (zero-second pull-in), so that the timer can only be realized by matching with the pulse igniter with the function, the thermocouple wiring is complicated, and the cooker function is limited by the selected pulse igniter function. The pull-in current of the pulse igniter when the electromagnetic valve is switched on is greatly influenced by the voltage of the battery, and the pulse igniter can pull in the low-voltage (0.7 Vcc) condition, so that the pull-in current provided for switching on the electromagnetic valve when the voltage of the battery is normal is larger than the actual requirement, the energy consumption of the battery is too high, and the phenomenon that the battery of the gas cooker with the thermocouple electromagnetic valve and the zero-second pull-in function on the market consumes too fast is caused.
Disclosure of Invention
The invention provides a low-cost timer which has the function of controlling the on and off of a thermocouple electromagnetic valve simultaneously aiming at the prior art.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme. A timer for controlling the on and off of a thermocouple electromagnetic valve comprises a controller U1; the I/O input/output is electrically connected with the controller U1; also comprises
The negative voltage generating circuit is electrically connected with the controller U1 and is used for generating and controlling a negative voltage value;
the valve breaking circuit is electrically connected with the controller U1 and the thermocouple electromagnetic valve and is used for turning off the thermocouple electromagnetic valve;
the suction valve circuit is electrically connected with the controller U1 and the thermocouple electromagnetic valve and is used for sucking the thermocouple electromagnetic valve;
the booster circuit is electrically connected with the controller U1 and is used for providing stable working voltage VCC;
and the dry Battery voltage detection circuit is electrically connected between the controller U1 and the dry Battery batteries.
Further, the timer further includes a switch signal input circuit electrically connected between the controller U1 and the touch switch S1.
Further, the negative voltage generating circuit comprises a PMOS tube P1, an NMOS tube N1, a capacitor C1, a Schottky diode D1, a Schottky diode D2 and a capacitor C2.
Further, the valve breaking circuit comprises a PMOS pipe P2 and a resistor R1.
Further, the suction valve circuit comprises an NMOS tube N2, a resistor R2 and a resistor R3.
Further, the I/O input and output comprise an LED digital display U3, a touch key U4 and a buzzer BELL.
Further, the boost circuit comprises a DCDC boost module U2 and a dry Battery.
The invention provides a timer for controlling the on-off of a thermocouple electromagnetic valve, a controller U1 starts PWM pulse width modulation to control a negative voltage value of a negative voltage generating circuit, and simultaneously acquires a voltage value of a dry Battery to synchronously modulate the pulse width of PWM and stabilize a negative voltage value VSS, thereby controlling the valve sucking current of the thermocouple electromagnetic valve not to fluctuate along with the change of the voltage of the dry Battery, and setting the valve sucking current of the thermocouple electromagnetic valve near the lower limit value of the rated working current. During the time when the electromagnetic valve of the thermocouple is switched on (zero-second pull-in) until the thermocouple can provide the pull-in current for maintaining, the timer provides stable pull-in current (close to the minimum required current) for the thermocouple, or the pull-in current provided for the thermocouple is gradually reduced by the rising timer which provides the pull-in current along with the thermocouple, so that the energy-saving purpose is achieved, and the service life of the household gas cooker battery is prolonged. The timer of the invention is applied to the gas cooker with the timing function, the requirement on the pulse igniter is reduced, the most common pulse igniter can be used, the cost is reduced, and meanwhile, the wiring of a control system is simplified.
Drawings
Fig. 1 is a circuit diagram of the controller of the present invention.
Fig. 2 is a flow chart of the operation of the controller of the present invention.
FIG. 3 is a graph of the pull-in current of the control solenoid during ignition.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the timer for controlling the on and off of the thermocouple electromagnetic valve comprises a controller U1, a negative voltage generating circuit 1, a valve breaking circuit 2, a suction valve circuit 3, an I/O input/output 4, a boosting circuit 5, a dry Battery voltage detection circuit electrically connected between the controller U1 and a dry Battery, and a switch signal input circuit electrically connected between the controller U1 and a touch switch S1.
The negative voltage generating circuit 1 is electrically connected with the controller U1 and is used for generating and controlling a negative voltage value; the device comprises a PMOS tube P1, an NMOS tube N1, a capacitor C1, a Schottky diode D1, a Schottky diode D2 and a capacitor C2. The controller U1 is electrically connected with the GATE pole of the PMOS tube P1 and the GATE pole of the NMOS tube N1, the DRAIN pole of the PMOS tube P1 is electrically connected with the DRAIN pole of the NMOS tube N1 and the first end of the capacitor C1, the SOURCE pole of the PMOS tube P1 is connected with the Battery anode, the SOURCE pole of the NMOS tube N1 is grounded, the second end of the capacitor C1 is electrically connected with the cathode of the Schottky diode D1 and the anode of the Schottky diode D2, the cathode of the Schottky diode D2 is grounded, the first end of the capacitor C2 is electrically connected with the anode of the Schottky diode D1, and the second end of the capacitor C2 is grounded.
The valve breaking circuit 2 is electrically connected with the controller U1 and the thermocouple electromagnetic valve 6 and is used for cutting off the thermocouple electromagnetic valve 6; the valve cut-off circuit 2 comprises a PMOS pipe P2 and a resistor R1. The controller U1 is electrically connected with the GATE pole of the PMOS pipe P2, the SOURCE pole of the PMOS pipe P2 is connected with the positive pole of the dry Battery, the DRAIN pole of the PMOS pipe P2 is electrically connected with the first end of the resistor R1, and the second end of the resistor R1 is electrically connected with the first end of the thermocouple electromagnetic valve.
The suction valve circuit 3 is electrically connected with the controller U1 and the thermocouple electromagnetic valve 6 and is used for sucking the thermocouple electromagnetic valve 6; the suction valve circuit 3 comprises an NMOS tube N2, a resistor R2 and a resistor R3. The controller U1 is electrically connected with the first end of a resistor R2, the second end of a resistor R2 is electrically connected with the GATE electrode of an NMOS tube N2 and the first end of a resistor R3, the second end of a resistor R3 is electrically connected with the first end of a capacitor C2, the DRAIN electrode of the NMOS tube N2 is electrically connected with the first end of a solenoid valve thermocouple, and the SOURCE electrode of the NMOS tube N2 is electrically connected with the second end of a resistor R3.
The I/O input/output 4 comprises an LED digital display U3, a touch key U4 and a buzzer BELL; the controller U1 is electrically connected with the LED digital display U3, the controller U1 is electrically connected with the touch key U4, and the controller U1 is electrically connected with the buzzer BELL.
The booster circuit 5 is electrically connected with the controller U1 and is used for providing a stable working voltage VCC; the booster circuit 5 comprises a DCDC booster module U2 and a dry Battery; the positive electrode of the dry Battery is connected with the DCDC boosting module U2, and the DCDC boosting module U2 is electrically connected with the controller U1.
As shown in the working flow chart of fig. 2, the timer is connected to the battery, the controller U1 enters the energy saving mode after completing the self-test, if the battery voltage is lower than the limit value, the buzzer BELL sounds, and the LED digital display U3 displays the battery low level icon.
After 2 seconds of long pressing any touch key, the controller U1 exits the energy-saving mode, if the timing function is set, the buzzer BELL will give out a prompt sound after the timing function is finished, and the LED digital display U3 displays a timing function working finishing icon, and the thermocouple electromagnetic valve 6 is disconnected through the valve-disconnecting circuit 2. If there is no timer set or the timer function is finished, the controller U1 will enter the power saving mode after 10 seconds.
When the touch switch S1 is pressed, the controller U1 starts PWM pulse width modulation to control the negative voltage value of the negative voltage generating circuit 1, and at the same time, collects the voltage value of the dry Battery to modulate the PWM pulse width synchronously, and stabilizes the negative voltage value VSS, thereby controlling the suction valve current of the thermocouple solenoid valve 6 not to fluctuate with the change of the dry Battery voltage, so that the suction valve current of the thermocouple solenoid valve 6 can be set near the lower limit of the rated working current, thereby satisfying the purpose of power saving and energy saving, and prolonging the service time of the Battery.
As shown in the graph of the thermocouple electromagnetic valve attracting current in fig. 3, when the touch switch S1 is pressed, the timer provides a stable negative attracting current, and when the temperature of the thermocouple rises after valve attraction and ignition are successful, the thermocouple current gradually increases, and the timer gradually decreases the output current to the thermocouple electromagnetic valve, so as to achieve the purposes of stabilizing the valve attraction, saving power and energy in the process, and prolonging the service time of the battery.
The timer of the invention is controlled by a single circuit. The two-way timer and the multi-way timer have the same principle, can add or delete corresponding functions according to different cooking utensils, and realize two-way control and multi-way control.
Claims (7)
1. A timer for controlling the on-off of a thermocouple electromagnetic valve comprises
A controller U1;
the I/O input/output (4) is electrically connected with the controller U1;
the method is characterized in that: also comprises
The negative voltage generating circuit (1) is electrically connected with the controller U1 and is used for generating and controlling a negative voltage value;
the valve breaking circuit (2) is electrically connected with the controller U1 and the thermocouple electromagnetic valve (6) and is used for cutting off the thermocouple electromagnetic valve (6);
the suction valve circuit (3) is electrically connected with the controller U1 and the thermocouple electromagnetic valve (6) and is used for sucking the thermocouple electromagnetic valve (6);
the boosting circuit (5) is electrically connected with the controller U1 and is used for providing stable working voltage VCC;
and the dry Battery voltage detection circuit is electrically connected between the controller U1 and the dry Battery batteries.
2. The timer for controlling the on and off of a thermocouple solenoid valve according to claim 1, further comprising a switch signal input circuit electrically connected between the controller U1 and the touch switch S1.
3. The timer for controlling on and off of a thermocouple solenoid valve according to claim 1, wherein: the negative voltage generating circuit (1) comprises a PMOS tube P1, an NMOS tube N1, a capacitor C1, a Schottky diode D1, a Schottky diode D2 and a capacitor C2.
4. The timer for controlling on and off of a thermocouple solenoid valve according to claim 1, wherein: the valve cut-off circuit (2) comprises a PMOS pipe P2 and a resistor R1.
5. The timer for controlling on and off of a thermocouple solenoid valve according to claim 1, wherein: the suction valve circuit (3) comprises an NMOS tube N2, a resistor R2 and a resistor R3.
6. The timer for controlling on and off of a thermocouple solenoid valve according to claim 1, wherein: the I/O input and output (4) comprises an LED digital display U3, a touch key U4 and a buzzer BELL.
7. The timer for controlling on and off of a thermocouple solenoid valve according to claim 1, wherein: the boosting circuit (5) comprises a DCDC boosting module U2 and a dry Battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110627710.7A CN113251448A (en) | 2021-06-05 | 2021-06-05 | Timer for controlling on and off of thermocouple electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110627710.7A CN113251448A (en) | 2021-06-05 | 2021-06-05 | Timer for controlling on and off of thermocouple electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113251448A true CN113251448A (en) | 2021-08-13 |
Family
ID=77186504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110627710.7A Withdrawn CN113251448A (en) | 2021-06-05 | 2021-06-05 | Timer for controlling on and off of thermocouple electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113251448A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1461912A (en) * | 2002-05-31 | 2003-12-17 | 陈振农 | Multifunctional fuel gas stove |
| CN108826376A (en) * | 2018-08-30 | 2018-11-16 | 李继明 | A kind of micro computer timing intelligent gas-burning stove |
| CN209042436U (en) * | 2018-08-24 | 2019-06-28 | 黄小华 | A kind of pulse ignition device intelligently powered off, electronic timing device and kitchen range |
| CN111396934A (en) * | 2020-03-26 | 2020-07-10 | 广东百威电子有限公司 | Pulse ignition controller and ignition delay control method for dual-delay thermoelectric type kitchen range |
| CN111780167A (en) * | 2020-06-08 | 2020-10-16 | 中山百得厨卫有限公司 | Ignition control method for kitchen range |
| CN213236269U (en) * | 2020-08-17 | 2021-05-18 | 中山百得厨卫有限公司 | Thermocouple solenoid valve control circuit |
-
2021
- 2021-06-05 CN CN202110627710.7A patent/CN113251448A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1461912A (en) * | 2002-05-31 | 2003-12-17 | 陈振农 | Multifunctional fuel gas stove |
| CN209042436U (en) * | 2018-08-24 | 2019-06-28 | 黄小华 | A kind of pulse ignition device intelligently powered off, electronic timing device and kitchen range |
| CN108826376A (en) * | 2018-08-30 | 2018-11-16 | 李继明 | A kind of micro computer timing intelligent gas-burning stove |
| CN111396934A (en) * | 2020-03-26 | 2020-07-10 | 广东百威电子有限公司 | Pulse ignition controller and ignition delay control method for dual-delay thermoelectric type kitchen range |
| CN111780167A (en) * | 2020-06-08 | 2020-10-16 | 中山百得厨卫有限公司 | Ignition control method for kitchen range |
| CN213236269U (en) * | 2020-08-17 | 2021-05-18 | 中山百得厨卫有限公司 | Thermocouple solenoid valve control circuit |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210813 |
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| WW01 | Invention patent application withdrawn after publication |