Integrated stove pulse igniter

Abstract

The present invention discloses an integrated stove pulse igniter, comprising an integrated stove main control MCU, a gas stove module and a serial communication module; the gas stove module comprises an ignition MCU, an ignition flameout unit and a boost ignition unit; the integrated stove main control MCU is communicatively connected with the ignition MCU through the serial communication module; the ignition flameout unit comprises an ignition switch, the two ends of the ignition switch are electrically connected to the second port and the third port of the connecting cable CON5 respectively, the third port of the connecting cable is grounded, the second port of the connecting cable CON5 is electrically connected to the ignition monitoring terminal KGL of the ignition MCU, the ignition drive output terminal of the ignition MCU is electrically connected to the drive input terminal of the boost ignition unit, and the output terminal of the boost ignition unit is electrically connected to the ignition pin CP1. The integrated stove pulse igniter solves the problems of complex circuit wiring and high production cost of the integrated stove.

Description

Technical Field

[0001] The invention relates to the field of integrated stoves, and in particular to a pulse igniter for an integrated stove. Background Art

[0002] At present, most household gas stoves are integrated stoves, which use electronic igniters and gas stove switches to ignite. Integrated stoves include smoke stove modules and gas stove modules. Figure 1 As shown, the existing integrated stove controls the operation of the smoke stove module by feeding back the ignition control signal and the flameout control signal of the gas stove module to the integrated stove main control MCU; in addition, the ignition control signal and the flameout control signal of the gas stove module are also fed back to the ignition MCU of the gas stove module itself to trigger the ignition and flameout of the gas stove module. This increases the complexity of the circuit wiring of the integrated stove, thereby increasing the production cost. Summary of the invention

[0003] In order to overcome the defects of the prior art, the present invention provides an integrated stove pulse igniter to solve the above-mentioned problems.

[0004] The technical solution adopted by the present invention to solve the technical problem is: an integrated stove pulse igniter, comprising: an integrated stove main control MCU, a gas stove module and a serial communication module;

[0005] The gas stove module includes an ignition MCU, an ignition and flameout unit, and a boost ignition unit; the integrated stove main control MCU is connected to the ignition MCU through a serial communication module;

[0006] The ignition on / off unit includes an ignition switch, two ends of the ignition switch are electrically connected to the second port and the third port of the connecting cable CON5 respectively, the third port of the connecting cable CON5 is grounded, the second port of the connecting cable CON5 is electrically connected to the ignition monitoring terminal KGL of the ignition MCU, the ignition drive output terminal of the ignition MCU is electrically connected to the drive input terminal of the boost ignition unit, and the output terminal of the boost ignition unit is electrically connected to the ignition pin CP1.

[0007] It is worth noting that the boost ignition unit includes a DC boost circuit and an inverter boost circuit;

[0008] The ignition drive output end of the ignition MCU is electrically connected to the input end of the DC boost circuit, the output end of the DC boost circuit is electrically connected to the input end of the inverter boost circuit, and the output end of the inverter boost circuit is electrically connected to the ignition pin CP1.

[0009] Optionally, the DC boost circuit includes an NPN transistor Q2, a PNP transistor Q1, a capacitor C6 and an oscillation transformer T1;

[0010] The ignition drive output end of the ignition MCU is electrically connected to the base of the NPN crystal transistor Q2, the emitter of the NPN crystal transistor Q2 is grounded, the collector of the NPN crystal transistor Q2 is electrically connected to the first end of the self-excited oscillation coil of the oscillation transformer T1, the second end of the self-excited oscillation coil of the oscillation transformer T1 is electrically connected to the base of the PNP crystal transistor Q1, the second end of the self-excited oscillation coil of the oscillation transformer T1 is electrically connected to the emitter of the PNP crystal transistor Q1 through the capacitor C6, the emitter of the PNP crystal transistor Q1 is externally connected to a 5V power supply, the first end of the primary coil of the oscillation transformer T1 is grounded, the second end of the primary coil of the oscillation transformer T1 is electrically connected to the collector of the PNP crystal transistor Q1, and the secondary coil of the oscillation transformer T1 is electrically connected to the input end of the inverter boost circuit.

[0011] Preferably, the inverter boost circuit includes a diode D2, a trigger tube DB1, a resistor R8, a capacitor C4 and a high-voltage package T2;

[0012] The first end of the secondary coil of the oscillation transformer T1 is electrically connected to the anode of the diode D2, the cathode of the diode D2 is electrically connected to the first end of the primary coil of the high-voltage coil T2 through the capacitor C4, the second end of the primary coil of the high-voltage coil T2 is grounded, the first end of the secondary coil of the high-voltage coil T2 is electrically connected to the ignition needle CP1, and the second end of the secondary coil of the high-voltage coil T2 is electrically connected to the second end of the primary coil of the high-voltage coil T2; the cathode of the diode D2 is also electrically connected to one end of the trigger tube DB1, the other end of the trigger tube DB1 is grounded, the cathode of the diode D2 is also electrically connected to one end of the resistor R8, and the other end of the resistor R8 is grounded.

[0013] Specifically, the first end of the exciting oscillation coil of the oscillation transformer T1 is an opposite-name end, the second end of the exciting oscillation coil of the oscillation transformer T1 is a like-name end, the first end of the primary coil of the oscillation transformer T1 is an opposite-name end, the second end of the primary coil of the oscillation transformer T1 is a like-name end, the first end of the secondary coil of the oscillation transformer T1 is a like-name end, and the second end of the secondary coil of the oscillation transformer T1 is an opposite-name end;

[0014] The first end of the primary coil of the high-voltage package T2 is a like-name end, the second end of the primary coil of the high-voltage package T2 is an opposite-name end, the first end of the secondary coil of the high-voltage package T2 is a like-name end, and the second end of the secondary coil of the high-voltage package T2 is an opposite-name end.

[0015] It is worth noting that the gas stove module further includes a solenoid valve and a negative pressure generating unit U2, and the normally closed end of the solenoid valve is used to open and close the gas pipeline;

[0016] The electrical signal input end of the solenoid valve is electrically connected to the solenoid valve opening signal output end LWC of the ignition MCU, and the electrical signal output end of the solenoid valve is electrically connected to the output end OUT of the negative pressure generating unit U2.

[0017] Optionally, the ignition and flameout unit also includes a solenoid valve opening circuit, which includes a PNP transistor Q4. The solenoid valve opening signal output terminal LWC of the ignition MCU is electrically connected to the base of the PNP transistor Q4. The emitter of the PNP transistor Q4 is externally connected to a 5V power supply, and the collector of the PNP transistor Q4 is electrically connected to the electrical signal input terminal of the solenoid valve.

[0018] Specifically, the ignition and flameout unit further includes a flameout switch and a solenoid valve closing circuit, and the solenoid valve closing circuit includes an NPN transistor Q7;

[0019] The flameout switch is electrically connected to the flameout monitoring input terminal of the ignition MCU, the solenoid valve closing signal output terminal LVS of the ignition MCU is electrically connected to the base of the NPN transistor Q7, the emitter of the NPN transistor Q7 is externally connected to a -5V power supply, and the collector of the NPN transistor Q7 is electrically connected to the electrical signal input terminal of the solenoid valve.

[0020] Preferably, the gas stove module also includes a temperature firewall unit, and the temperature firewall unit includes a thermistor R6, which is arranged in the cooker of the gas stove, one end of the thermistor R6 is externally connected to a 5V power supply, and the other end of the thermistor R6 is electrically connected to the temperature collection end of the ignition MCU.

[0021] Specifically, the serial communication module includes a resistor R2, a resistor R3, and a pull-up resistor R31;

[0022] The receiving data terminal RXD1 of the ignition MCU is electrically connected to the sending data terminal TXD2 of the integrated stove main control MCU through the resistor R2, and the sending data terminal TXD1 of the ignition MCU is electrically connected to the receiving data terminal RXD2 of the integrated stove main control MCU through the resistor R3;

[0023] One end of the pull-up resistor R31 is externally connected to a 5V power supply, and the other end of the pull-up resistor R31 is electrically connected to a receiving data terminal RXD1 of the ignition MCU.

[0024] The beneficial effect of the present invention is that in the integrated stove pulse igniter, after the ignition switch is turned on, and the ignition MCU drives the boost ignition unit and ignites through the ignition pin CP1, the ignition MCU can obtain the ignition control signal and the flameout control signal according to the state of the ignition and flameout unit, and then send the relevant ignition control signal and flameout control signal to the integrated stove main control MCU through the serial communication module. In this way, the wiring between the integrated stove main control MCU and the ignition and flameout unit can be reduced, the circuit wiring of the integrated stove can be simplified, and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The circuit structure diagram of the existing integrated stove;

[0026] Figure 2 A circuit diagram of an integrated stove pulse igniter in one embodiment of the present invention;

[0027] Figure 3 is a circuit diagram of a boost ignition unit in one embodiment of the present invention;

[0028] Figure 4 The present invention is a circuit diagram of an ignition and flameout unit in one embodiment of the present invention;

[0029] Figure 5 is a peripheral circuit diagram of a negative pressure generating unit U2 in one embodiment of the present invention;

[0030] Figure 6 is a circuit diagram of a serial communication module in one embodiment of the present invention;

[0031] Figure 7 FIG. 4 is a circuit diagram of a temperature firewall unit in one embodiment of the present invention. DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] like Figure 2-7 As shown, an integrated stove pulse igniter includes: an integrated stove main control MCU, a gas stove module and a serial communication module;

[0034] The gas stove module includes an ignition MCU, an ignition and flameout unit, and a boost ignition unit; the integrated stove main control MCU is connected to the ignition MCU through a serial communication module; in this embodiment, the integrated stove main control MCU is also connected to the smoke stove module, so that after the boost ignition unit of the gas stove module is started, the ignition MCU sends a start signal to the integrated stove main control MCU through the serial communication module, and the integrated stove main control MCU sends a smoke stove start signal to the smoke stove module, so that the smoke stove module is started to realize the smoking function;

[0035] The ignition on / off unit includes an ignition switch, and the two ends of the ignition switch are electrically connected to the second port and the third port of the connecting cable CON5 respectively. The third port of the connecting cable CON5 is grounded, and the second port of the connecting cable CON5 is electrically connected to the ignition monitoring terminal KGL of the ignition MCU. The ignition drive output terminal of the ignition MCU is electrically connected to the drive input terminal of the boost ignition unit, and the output terminal of the boost ignition unit is electrically connected to the ignition pin CP1. Specifically, the ignition switch is a knob switch. When the ignition switch is closed, the ignition monitoring terminal KGL of the ignition MCU is grounded. The ignition MCU detects that its own ignition monitoring terminal KGL is a low-level signal, and the ignition drive output terminal of the ignition MCU will output a high-level ignition signal to the drive input terminal of the boost ignition unit. The boost ignition unit starts to work and ignition is achieved through the ignition pin CP1. Figure 4 As shown, in the connecting cable CON5, 1 represents the first port, 2 represents the second port, 3 represents the third port, 4 represents the fourth port, and so on.

[0036] In the integrated stove pulse igniter, after the ignition switch is turned on and the ignition MCU drives the boost ignition unit and ignites through the ignition pin CP1, the ignition MCU can obtain the ignition control signal and the flameout control signal according to the state of the ignition and flameout unit, and then send the relevant ignition control signal and flameout control signal to the integrated stove main control MCU through the serial communication module. In this way, the wiring between the integrated stove main control MCU and the ignition and flameout unit can be reduced, the circuit wiring of the integrated stove can be simplified, and the production cost is reduced.

[0037] In some embodiments, the boost ignition unit includes a DC boost circuit and an inverter boost circuit;

[0038] The ignition drive output end of the ignition MCU is electrically connected to the input end of the DC boost circuit, the output end of the DC boost circuit is electrically connected to the input end of the inverter boost circuit, and the output end of the inverter boost circuit is electrically connected to the ignition pin CP1.

[0039] like Figure 2As shown, the DC boost circuit is used to boost the high-level DC signal output from the ignition drive output terminal of the ignition MCU, and then further boost it through the inverter boost circuit to reach the voltage that drives the ignition pin CP1 to ignite.

[0040] It is worth noting that if Figure 2 and 3 As shown, the DC boost circuit includes an NPN transistor Q2, a PNP transistor Q1, a capacitor C6 and an oscillation transformer T1;

[0041] The ignition drive output end of the ignition MCU is electrically connected to the base of the NPN crystal transistor Q2, the emitter of the NPN crystal transistor Q2 is grounded, the collector of the NPN crystal transistor Q2 is electrically connected to the first end of the self-excited oscillation coil of the oscillation transformer T1, the second end of the self-excited oscillation coil of the oscillation transformer T1 is electrically connected to the base of the PNP crystal transistor Q1, the second end of the self-excited oscillation coil of the oscillation transformer T1 is electrically connected to the emitter of the PNP crystal transistor Q1 through the capacitor C6, the emitter of the PNP crystal transistor Q1 is externally connected to a 5V power supply, the first end of the primary coil of the oscillation transformer T1 is grounded, the second end of the primary coil of the oscillation transformer T1 is electrically connected to the collector of the PNP crystal transistor Q1, and the secondary coil of the oscillation transformer T1 is electrically connected to the input end of the inverter boost circuit.

[0042] When the ignition drive output terminal of the ignition MCU outputs a high level, the collector and emitter of the NPN transistor Q2 are turned on, the first end of the self-excited oscillation coil of the oscillation transformer T1 is grounded to form a loop, and the base of the PNP transistor Q1 will have a high level input, thereby turning on the collector and emitter of the PNP transistor Q1 and turning on the primary coil of the oscillation transformer. When the ignition drive output terminal of the ignition MCU outputs a high level, the oscillation transformer T1 circuit will start to oscillate by itself, and its oscillation frequency is about 20kHz, which is specifically determined by the inductance of the primary coil of the oscillation transformer T1 and the amplification factor of the PNP transistor Q1. The self-excited oscillation coil of the oscillation transformer T1 is a feedback winding used for self-excited oscillation, so that the boosted sinusoidal alternating current can be output from the secondary coil of the oscillation transformer T1.

[0043] Preferably, Figure 2 and 3 As shown, the inverter boost circuit includes a diode D2, a trigger tube DB1, a resistor R8, a capacitor C4 and a high-voltage package T2; specifically, the high-voltage package T2 is a line output transformer;

[0044] The first end of the secondary coil of the oscillation transformer T1 is electrically connected to the anode of the diode D2, the cathode of the diode D2 is electrically connected to the first end of the primary coil of the high-voltage coil T2 through the capacitor C4, the second end of the primary coil of the high-voltage coil T2 is grounded, the first end of the secondary coil of the high-voltage coil T2 is electrically connected to the ignition needle CP1, and the second end of the secondary coil of the high-voltage coil T2 is electrically connected to the second end of the primary coil of the high-voltage coil T2; the cathode of the diode D2 is also electrically connected to one end of the trigger tube DB1, the other end of the trigger tube DB1 is grounded, the cathode of the diode D2 is also electrically connected to one end of the resistor R8, and the other end of the resistor R8 is grounded.

[0045] At the beginning, the trigger tube DB1 is turned off, the capacitor C4 stores energy and charges, and the voltage continues to rise. The alternating current output by the secondary coil of the oscillation transformer T1 is rectified by the diode D2 to obtain a direct current of about 150V. The voltage of this direct current turns on the trigger tube DB1, and the capacitor C4 discharges through the primary coil of the high-voltage package T2 and the trigger tube DB1 to form a loop. The current generates an induced electromotive force in the primary coil of the high-voltage package T2, which is boosted by the high-voltage package T2, and a high-voltage discharge is generated in the secondary coil of the high-voltage package T2, forming a positive half cycle of the high-voltage waveform. During the process of the capacitor C4 discharging through the primary coil of the high-voltage package T2 and the trigger tube DB1 to form a loop, the voltage gradually decreases. When the voltage decreases to close to 0V, the trigger tube DB1 is turned off. The energy stored in the primary coil of the high-voltage package T1 is discharged through the resistor R8 and the capacitor C4, which is boosted by the high-voltage package T2, and a high-voltage discharge is generated in the secondary coil of the high-voltage package T2, forming a negative half cycle of the high-voltage waveform. Repeating the previous process, the high voltage of the secondary coil of the high-voltage package T2 causes the air to be broken down, sparks are generated, and the gas is ignited.

[0046] Specifically, the first end of the exciting oscillation coil of the oscillation transformer T1 is an opposite-name end, the second end of the exciting oscillation coil of the oscillation transformer T1 is a like-name end, the first end of the primary coil of the oscillation transformer T1 is an opposite-name end, the second end of the primary coil of the oscillation transformer T1 is a like-name end, the first end of the secondary coil of the oscillation transformer T1 is a like-name end, and the second end of the secondary coil of the oscillation transformer T1 is an opposite-name end; Figure 3As shown, the first end of the exciting oscillation coil of the oscillation transformer T1 is the 2nd port of the oscillation transformer T1, the second end of the exciting oscillation coil of the oscillation transformer T1 is the 3rd port of the oscillation transformer T1, the first end of the primary coil of the oscillation transformer T1 is the 1st port of the oscillation transformer T1, the second end of the primary coil of the oscillation transformer T1 is the 4th port of the oscillation transformer T1, the first end of the secondary coil of the oscillation transformer T1 is the 8th port of the oscillation transformer T1, and the second end of the secondary coil of the oscillation transformer T1 is the 5th port of the oscillation transformer T1. In this way, it is ensured that the electromotive force phase of the second end of the exciting oscillation coil of the oscillation transformer T1 is the same as the electromotive force phase of the first end of the secondary coil of the oscillation transformer T1, and it is ensured that the electromotive force phase of the second end of the primary coil of the oscillation transformer T1 is the same as the electromotive force phase of the first end of the secondary coil of the oscillation transformer T1;

[0047] The first end of the primary coil of the high-voltage package T2 is a same-name end, the second end of the primary coil of the high-voltage package T2 is a different-name end, the first end of the secondary coil of the high-voltage package T2 is a same-name end, and the second end of the secondary coil of the high-voltage package T2 is a different-name end. Figure 3 As shown, the first end of the primary coil of the high-voltage package T2 is port 1 of the high-voltage package T2, the second end of the primary coil of the high-voltage package is port 2 of the high-voltage package T2, the first end of the secondary coil of the high-voltage package T2 is port 4 of the high-voltage package T2, and the second end of the secondary coil of the high-voltage package T2 is port 3 of the high-voltage package T2. In this way, it is ensured that the phase of the electromotive force of the first end of the primary coil of the high-voltage package T2 is the same as the phase of the electromotive force of the first end of the secondary coil of the high-voltage package T2.

[0048] Optionally, the gas stove module further includes a solenoid valve and a negative pressure generating unit U2, and the normally closed end of the solenoid valve is used to open and close the gas pipeline;

[0049] The electrical signal input end of the solenoid valve is electrically connected to the solenoid valve opening signal output end LWC of the ignition MCU, and the electrical signal output end of the solenoid valve is electrically connected to the output end OUT of the negative pressure generating unit U2.

[0050] like Figure 5 As shown, in this embodiment, the model of the negative pressure generating unit U2 is SGM3204, and the negative pressure generating unit U2 can stably output a voltage of -5V at its output terminal OUT. After the solenoid valve opening signal output terminal LWC of the ignition MCU outputs a high-level signal, the coil of the solenoid valve can be energized, the normally closed end of the solenoid valve is opened, the gas pipeline is connected, and the gas stove can be turned on by ignition of the ignition needle.

[0051] In some embodiments, Figure 4 As shown, the ignition and flameout unit also includes a solenoid valve opening circuit, which includes a PNP transistor Q4. The solenoid valve opening signal output terminal LWC of the ignition MCU is electrically connected to the base of the PNP transistor Q4, the emitter of the PNP transistor Q4 is externally connected to a 5V power supply, and the collector of the PNP transistor Q4 is electrically connected to the electrical signal input terminal of the solenoid valve.

[0052] In this embodiment, the collector of the PNP transistor Q4 is electrically connected to the fourth end of the connecting cable CON5, and the electrical signal input end of the solenoid valve is electrically connected to the fourth end of the connecting cable CON5. After the solenoid valve opening signal output end LWC of the ignition MCU outputs a high level, the emitter and collector of the PNP transistor Q4 are turned on, and the 5V power supply externally connected to the emitter of the PNP transistor Q4 is transmitted to the electrical signal input end of the solenoid valve through the fourth port of the connecting cable CON5, so that the coil of the solenoid valve is energized and the normally closed end of the solenoid valve is opened.

[0053] It is worth noting that if Figure 4 As shown, the ignition and flameout unit further includes a flameout switch and a solenoid valve closing circuit, and the solenoid valve closing circuit includes an NPN transistor Q7;

[0054] The flameout switch is electrically connected to the flameout monitoring input terminal of the ignition MCU, the solenoid valve closing signal output terminal LVS of the ignition MCU is electrically connected to the base of the NPN transistor Q7, the emitter of the NPN transistor Q7 is externally connected to a -5V power supply, and the collector of the NPN transistor Q7 is electrically connected to the electrical signal input terminal of the solenoid valve.

[0055] In this embodiment, the collector of the NPN transistor Q7 is electrically connected to the fourth end of the connecting cable CON5. After the electromagnetic valve closing signal output terminal LVS of the ignition MCU outputs a high level, the emitter and collector of the NPN transistor Q7 are turned on, and the -5V power supply externally connected to the emitter of the NPN transistor Q7 pulls down the voltage of the fourth port of the connecting cable CON5, so that the coil of the electromagnetic valve loses power, the normally closed end of the electromagnetic valve is closed, the gas pipeline is cut off, and the gas stove will be turned off.

[0056] Preferably, the gas stove module of the integrated stove pulse igniter includes multiple gas stoves, each of which corresponds to a solenoid valve, a solenoid valve opening circuit, an ignition switch, a boost ignition unit, an ignition needle, a flameout switch and a solenoid valve closing circuit.

[0057] Optional, such as Figure 7As shown, the gas stove module also includes a temperature firewall unit, and the temperature firewall unit includes a thermistor R6. The thermistor R6 is arranged in the cooker of the gas stove. One end of the thermistor R6 is externally connected to a 5V power supply, and the other end of the thermistor R6 is electrically connected to the temperature collection end of the ignition MCU.

[0058] In this embodiment, the other end of the thermistor R6 is electrically connected to the temperature acquisition end of the ignition MCU through the first port of the connecting cable CON3. In the connecting cable CON3, 1 represents the first port and 2 represents the second port. When the thermistor detects that the temperature rise exceeds a certain temperature within a certain period of time, the ignition MCU closes the solenoid valve through the solenoid valve closing circuit to achieve the protective effect of gas cut-off and flameout, ensuring the safety of gas stove use.

[0059] Specifically, Figure 6 As shown, the serial communication module includes a resistor R2, a resistor R3 and a pull-up resistor R31;

[0060] The receiving data terminal RXD1 of the ignition MCU is electrically connected to the sending data terminal TXD2 of the integrated stove main control MCU through the resistor R2, and the sending data terminal TXD1 of the ignition MCU is electrically connected to the receiving data terminal RXD2 of the integrated stove main control MCU through the resistor R3; in this embodiment, the receiving data terminal RXD2 of the integrated stove main control MCU is electrically connected to the fourth port of the connecting cable CON1 through the resistor R3, and the fourth port of the connecting cable CON1 is electrically connected to the sending data terminal TXD1 of the ignition MCU; the sending data terminal TXD2 of the integrated stove main control MCU is electrically connected to the third port of the connecting cable CON1 through the resistor R2, and the connecting cable CON1 is electrically connected to the sending data terminal TXD1 of the ignition MCU. The third port of CON1 is electrically connected to the receiving data terminal RXD1 of the ignition MCU; in the connecting cable CON1, 1 represents the first port, 2 represents the second port, 3 represents the third port, and 4 represents the fourth port; in this way, the ignition MCU sends the smoke and stove linkage signal, the stove timing signal and the temperature firewall signal to the integrated stove main control MCU through the sending data terminal TXD1, and these signals are received by the receiving data terminal RXD2 of the integrated stove main control MCU. After the integrated stove main control MCU performs corresponding processing, the signals are sent from the sending data terminal TXD2 of the integrated stove main control MCU to the receiving data terminal RXD1 of the ignition MCU. After the ignition MCU receives and processes the signal, it controls the working state of the corresponding circuit;

[0061] One end of the pull-up resistor R31 is connected to an external 5V power supply, and the other end of the pull-up resistor R31 is electrically connected to the receiving data terminal RXD1 of the ignition MCU. In this embodiment, the pull-up resistor R31 can ensure that the receiving data terminal RXD2 of the integrated stove main control MCU is at a high level.

[0062] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An integrated stove pulse igniter, characterized in that: include: Integrated stove main control MCU, gas stove module and serial communication module; The gas stove module includes an ignition MCU, an ignition and flameout unit, and a boost ignition unit; the integrated stove main control MCU is connected to the ignition MCU through a serial communication module; The ignition and flameout unit includes an ignition switch, two ends of the ignition switch are electrically connected to the second port and the third port of the connecting cable CON5 respectively, the third port of the connecting cable CON5 is grounded, the second port of the connecting cable CON5 is electrically connected to the ignition monitoring terminal KGL of the ignition MCU, the ignition drive output terminal of the ignition MCU is electrically connected to the drive input terminal of the boost ignition unit, and the output terminal of the boost ignition unit is electrically connected to the ignition pin CP1; The boost ignition unit includes a DC boost circuit and an inverter boost circuit; The ignition drive output end of the ignition MCU is electrically connected to the input end of the DC boost circuit, the output end of the DC boost circuit is electrically connected to the input end of the inverter boost circuit, and the output end of the inverter boost circuit is electrically connected to the ignition pin CP1; The DC boost circuit includes an NPN transistor Q2, a PNP transistor Q1, a capacitor C6 and an oscillation transformer T1; The ignition drive output end of the ignition MCU is electrically connected to the base of the NPN crystal transistor Q2, the emitter of the NPN crystal transistor Q2 is grounded, the collector of the NPN crystal transistor Q2 is electrically connected to the first end of the self-excited oscillation coil of the oscillation transformer T1, the second end of the self-excited oscillation coil of the oscillation transformer T1 is electrically connected to the base of the PNP crystal transistor Q1, the second end of the self-excited oscillation coil of the oscillation transformer T1 is electrically connected to the emitter of the PNP crystal transistor Q1 through the capacitor C6, the emitter of the PNP crystal transistor Q1 is externally connected to a 5V power supply, the first end of the primary coil of the oscillation transformer T1 is grounded, the second end of the primary coil of the oscillation transformer T1 is electrically connected to the collector of the PNP crystal transistor Q1, and the secondary coil of the oscillation transformer T1 is electrically connected to the input end of the inverter boost circuit; The first end of the exciting oscillation coil of the oscillation transformer T1 is an opposite-name end, the second end of the exciting oscillation coil of the oscillation transformer T1 is a like-name end, the first end of the primary coil of the oscillation transformer T1 is an opposite-name end, the second end of the primary coil of the oscillation transformer T1 is a like-name end, the first end of the secondary coil of the oscillation transformer T1 is a like-name end, and the second end of the secondary coil of the oscillation transformer T1 is an opposite-name end, so that the electromotive force phase of the second end of the exciting oscillation coil of the oscillation transformer T1 is the same as the electromotive force phase of the first end of the secondary coil of the oscillation transformer T1, and the electromotive force phase of the second end of the primary coil of the oscillation transformer T1 is the same as the electromotive force phase of the first end of the secondary coil of the oscillation transformer T1; The inverter boost circuit includes a diode D2, a trigger tube DB1, a resistor R8, a capacitor C4 and a high-voltage coil T2; the first end of the secondary coil of the oscillation transformer T1 is electrically connected to the anode of the diode D2, the cathode of the diode D2 is electrically connected to the first end of the primary coil of the high-voltage coil T2 through the capacitor C4, the second end of the primary coil of the high-voltage coil T2 is grounded, the first end of the secondary coil of the high-voltage coil T2 is electrically connected to the ignition pin CP1, and the second end of the secondary coil of the high-voltage coil T2 is electrically connected to the second end of the primary coil of the high-voltage coil T2; the cathode of the diode D2 is also electrically connected to one end of the trigger tube DB1, the other end of the trigger tube DB1 is grounded, the cathode of the diode D2 is also electrically connected to one end of the resistor R8, and the other end of the resistor R8 is grounded; The serial communication module includes resistor R2, resistor R3 and pull-up resistor R31; the receiving data terminal RXD1 of the ignition MCU is electrically connected to the sending data terminal TXD2 of the integrated stove main control MCU through the resistor R2, and the sending data terminal TXD1 of the ignition MCU is electrically connected to the receiving data terminal RXD2 of the integrated stove main control MCU through the resistor R3; one end of the pull-up resistor R31 is externally connected to a 5V power supply, and the other end of the pull-up resistor R31 is electrically connected to the receiving data terminal RXD1 of the ignition MCU.

2. The integrated stove pulse igniter according to claim 1, characterized in that: The first end of the primary coil of the high-voltage package T2 is a like-name end, the second end of the primary coil of the high-voltage package T2 is an opposite-name end, the first end of the secondary coil of the high-voltage package T2 is a like-name end, and the second end of the secondary coil of the high-voltage package T2 is an opposite-name end.

3. The integrated stove pulse igniter according to claim 2, characterized in that: The gas stove module further includes a solenoid valve and a negative pressure generating unit U2, the model of the negative pressure generating unit U2 is SGM3204, and the normally closed end of the solenoid valve is used to open and close the gas pipeline; The electrical signal input end of the solenoid valve is electrically connected to the solenoid valve opening signal output end LWC of the ignition MCU, and the electrical signal output end of the solenoid valve is electrically connected to the output end OUT of the negative pressure generating unit U2.

4. The integrated stove pulse igniter according to claim 3, characterized in that: The ignition and flameout unit also includes a solenoid valve opening circuit, which includes a PNP transistor Q4. The solenoid valve opening signal output terminal LWC of the ignition MCU is electrically connected to the base of the PNP transistor Q4. The emitter of the PNP transistor Q4 is externally connected to a 5V power supply, and the collector of the PNP transistor Q4 is electrically connected to the electrical signal input terminal of the solenoid valve.

5. The integrated stove pulse igniter according to claim 4, characterized in that: The ignition and flameout unit further comprises a flameout switch and a solenoid valve closing circuit, wherein the solenoid valve closing circuit comprises an NPN transistor Q7; The flameout switch is electrically connected to the flameout monitoring input terminal of the ignition MCU, the solenoid valve closing signal output terminal LVS of the ignition MCU is electrically connected to the base of the NPN transistor Q7, the emitter of the NPN transistor Q7 is externally connected to a -5V power supply, and the collector of the NPN transistor Q7 is electrically connected to the electrical signal input terminal of the solenoid valve.

6. The integrated stove pulse igniter according to claim 5, characterized in that: The gas stove module also includes a temperature firewall unit, which includes a thermistor R6. The thermistor R6 is arranged in the cooker of the gas stove. One end of the thermistor R6 is externally connected to a 5V power supply, and the other end of the thermistor R6 is electrically connected to the temperature collection end of the ignition MCU.

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