Stove thermocouple solenoid control circuit

Abstract

The utility model discloses a kind of electromagnetic valve control circuit of stove thermocouple, comprising: control chip, first positive power input, second positive power input, negative power input, first triode, second triode, third triode, fourth triode, fifth triode, first MOS tube, second MOS tube, third MOS tube, first thermocouple secondary coil and first thermocouple main coil, the utility model can effectively improve the use safety of stove.

Description

Technical Field

[0001] This utility model relates to the field of stove control technology, and in particular to a stove thermocouple solenoid valve control circuit. Background Technology

[0002] To ensure the solenoid valve shuts off immediately after the stove flameout, preventing gas leakage, a thermocouple is installed on the burner head. A thermocouple consists of two alloy wires of different materials welded together. When one end is heated and the other cools, an electromotive force (voltage) is generated between the two wires. When heated over a flame, the electromotive force generated at both ends of the thermocouple provides power to the solenoid valve, energizing it and maintaining its engagement to keep the gas flow open. However, for functions such as timer and anti-dry-burning, the valve needs to be manually closed. In related technologies, control is achieved using only a single thermocouple coil. If this component fails, the valve control will fail, posing a safety risk of gas leakage. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a thermocouple solenoid valve control circuit for a stove, which can effectively improve the safety of stove use.

[0004] According to a first aspect embodiment of the present invention, a stove thermocouple solenoid valve control circuit includes: a control chip, a first positive power input terminal, a second positive power input terminal, a negative power input terminal, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a first MOSFET, a second MOSFET, a third MOSFET, a first thermocouple sub-coil, and a first thermocouple main coil. The first end of the first thermocouple sub-coil is grounded, and the second end of the first thermocouple sub-coil is connected to the collectors of the first transistor, the fourth transistor, and the fifth transistor, respectively. The base of the first transistor is connected to the first control terminal of the control chip, the emitter of the first transistor is connected to the collector of the second transistor, the base of the second transistor is connected to the second control terminal of the control chip, the emitter of the second transistor is connected to the collector of the third transistor, and the base of the third transistor... The first positive power input terminal is connected to the emitter of the third transistor and the negative power input terminal, respectively. The base of the fourth transistor is connected to the fourth control terminal of the control chip, and the base of the fifth transistor is connected to the fifth control terminal of the control chip. The second positive power input terminal is connected to the drain of the first MOSFET, the drain of the second MOSFET, and the drain of the third MOSFET. The gate of the first MOSFET is connected to the sixth control terminal of the control chip, the gate of the second MOSFET is connected to the seventh control terminal of the control chip, and the gate of the third MOSFET is connected to the eighth control terminal of the control chip. The first end of the first thermocouple main coil is connected to the source of the first MOSFET, the source of the second MOSFET, and the source of the third MOSFET.

[0005] The stove thermocouple solenoid valve control circuit according to this utility model embodiment has at least the following beneficial effects: When the stove is ignited, the control chip controls the first, second, and third transistors to conduct, so that the first thermocouple secondary coil is connected to the negative power input terminal, thereby controlling the thermocouple to close and completing the stove ignition. When the stove is extinguished, the first, second, and third transistors are controlled to be cut off, while the fourth, fifth, first, second, and third MOSFETs are controlled to conduct, so that the first thermocouple secondary coil is connected to the first positive power input terminal and the first thermocouple main coil is connected to the second positive power input terminal. The thermocouple is controlled to open by reverse voltage, completing the stove extinguishing control. By setting the first thermocouple secondary coil and the first thermocouple main coil, the safety of stove use can be effectively improved.

[0006] According to some embodiments of this utility model, the stove thermocouple solenoid valve control circuit further includes a sixth transistor, a seventh transistor, and an eighth transistor. The collector of the sixth transistor is connected to the gate of the first MOS transistor and the second positive power input terminal, respectively. The base of the sixth transistor is connected to the sixth control terminal of the control chip, and the emitter of the sixth transistor is grounded. The collector of the seventh transistor is connected to the gate of the second MOS transistor and the second positive power input terminal, respectively. The base of the seventh transistor is connected to the seventh control terminal of the control chip, and the emitter of the seventh transistor is grounded. The collector of the eighth transistor is connected to the gate of the third MOS transistor and the second positive power input terminal, respectively. The base of the eighth transistor is connected to the eighth control terminal of the control chip, and the emitter of the eighth transistor is grounded.

[0007] According to some embodiments of this utility model, the control circuit for the thermocouple solenoid valve of the stove further includes a ninth transistor, a thirteenth transistor, and an eleventh transistor. The emitter of the ninth transistor is connected to the first positive power input terminal, the base of the ninth transistor is connected to the first control terminal of the control chip, the collector of the ninth transistor is connected to the base of the first transistor, the emitter of the thirteenth transistor is connected to the first positive power input terminal, the base of the thirteenth transistor is connected to the second control terminal of the control chip, the collector of the thirteenth transistor is connected to the base of the second transistor, the emitter of the eleventh transistor is connected to the first positive power input terminal, the base of the eleventh transistor is connected to the third control terminal of the control chip, and the collector of the eleventh transistor is connected to the base of the third transistor.

[0008] According to some embodiments of the present invention, the stove thermocouple solenoid valve control circuit further includes a first capacitor, the first end of the first capacitor is grounded, and the second end of the first capacitor is connected to the gate of the first MOS transistor, the collector of the sixth transistor, the gate of the second MOS transistor, the collector of the seventh transistor, the gate of the third MOS transistor, the collector of the eighth transistor, and the second positive power input terminal.

[0009] According to some embodiments of the present invention, the stove thermocouple solenoid valve control circuit further includes a second capacitor. The first terminal of the second capacitor is grounded, and the second terminal of the second capacitor is connected to the gate of the first MOS transistor, the collector of the sixth transistor, the gate of the second MOS transistor, the collector of the seventh transistor, the gate of the third MOS transistor, the collector of the eighth transistor, and the second positive power input terminal.

[0010] According to some embodiments of the present invention, the control circuit of the thermocouple solenoid valve of the stove further includes a first detection branch, which includes a first diode, a twentieth resistor and a twenty-first resistor. The negative terminal of the first diode is connected to the emitter of the first transistor and the collector of the second transistor, respectively. The positive terminal of the first diode is connected to the first positive power input terminal through the twentieth resistor. The positive terminal of the first diode is connected to the first detection terminal of the control chip through the twenty-first resistor.

[0011] According to some embodiments of the present invention, the control circuit of the stove thermocouple solenoid valve further includes a second detection branch, the second detection branch includes a third resistor, and the second detection terminal of the control chip is connected to the collector of the fourth transistor through the third resistor.

[0012] According to some embodiments of the present invention, the control circuit of the stove thermocouple solenoid valve further includes a third detection branch, the third detection branch includes a fourth resistor, and the third detection terminal of the control chip is connected to the collector of the fifth transistor through the fourth resistor.

[0013] According to some embodiments of the present invention, the stove thermocouple solenoid valve control circuit further includes a second diode, the positive terminal of the second diode is connected to the second positive power input terminal, and the negative terminal of the second diode is connected to the drain of the first MOS transistor, the drain of the second MOS transistor, and the drain of the third MOS transistor, respectively.

[0014] According to some embodiments of this utility model, the stove thermocouple solenoid valve control circuit further includes a third diode, the positive terminal of the third diode is connected to the negative power input terminal, and the negative terminal of the third diode is connected to the second end of the first thermocouple sub-coil and the collector of the first transistor, respectively.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a circuit diagram of the thermocouple solenoid valve control circuit for a stove according to an embodiment of the present utility model. Figure 2 This is a circuit diagram of the thermocouple solenoid valve control circuit for a stove, according to another embodiment of the present invention. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] Reference Figure 1 and Figure 2 , Figure 1 This is a circuit diagram of the thermocouple solenoid valve control circuit of the stove according to an embodiment of the present invention. Figure 2 This is a circuit diagram of the thermocouple solenoid valve control circuit for a stove, according to another embodiment of the present invention.

[0022] Understandably, the control circuit for the thermocouple solenoid valve of the stove includes a control chip, a first positive power input terminal of 5V, a second positive power input terminal of 12V, a negative power input terminal of -3.3V, a first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4, a fifth transistor Q5, a first MOSFET Q12, a second MOSFET Q13, a third MOSFET Q14, a first thermocouple secondary coil L1, and a first thermocouple main coil L2. The first terminal of the first thermocouple secondary coil L1 is grounded. The second terminal of the first thermocouple secondary coil L1 is connected to the collectors of the first transistor Q1, the fourth transistor Q4, and the fifth transistor Q5, respectively. The base of the first transistor Q1 is connected to the first control terminal Z1 of the control chip. The emitter of the first transistor Q1 is connected to the collector of the second transistor Q2. The base of the second transistor Q2 is connected to the second control terminal Z2 of the control chip. The emitter of the second transistor Q2 is connected to the collector of the third transistor Q3. The base of the third transistor Q3 is connected to the third control terminal Z3 of the control chip. The emitter of the third transistor Q3 is connected to the negative power supply input terminal -3.3V. The base of the fourth transistor Q4 is connected to the fourth control terminal Z4 of the control chip. The base of the fifth transistor Q5 is connected to the control chip. The fifth control terminal Z5 of the chip is connected. The first positive power input terminal 5V is connected to the emitter of the fourth transistor Q4 and the emitter of the fifth transistor Q5. The second positive power input terminal 12V is connected to the drain of the first MOSFET Q12, the drain of the second MOSFET Q13 and the drain of the third MOSFET Q14. The gate of the first MOSFET Q12 is connected to the sixth control terminal Z6 of the control chip. The gate of the second MOSFET Q13 is connected to the seventh control terminal Z7 of the control chip. The gate of the third MOSFET Q14 is connected to the eighth control terminal Z8 of the control chip. The first end of the first thermocouple main coil L2 is connected to the source of the first MOSFET Q12, the source of the second MOSFET Q13 and the source of the third MOSFET Q14. The second end of the first thermocouple main coil L2 is grounded.

[0023] It should be noted that during stove ignition, the control chip turns on transistors Q1, Q2, and Q3, connecting the first thermocouple secondary coil L1 to the negative power input terminal -3.3V, thereby controlling the thermocouple to close and ignite the stove. During stove extinguishing, the control chip turns off transistors Q1, Q2, and Q3, while simultaneously turning on transistors Q4, Q5, Q12, Q13, and Q14, connecting the first thermocouple secondary coil L1 to the first positive power input terminal 5V and the first thermocouple main coil L2 to the second positive power input terminal 12V. The reverse voltage controls the thermocouple to open, controlling the stove to extinguish. By using the first thermocouple secondary coil L1 and the first thermocouple main coil L2, the safety of the stove can be effectively improved.

[0024] Understandably, the control circuit for the thermocouple solenoid valve of the stove also includes a sixth transistor Q6, a seventh transistor Q7, and an eighth transistor Q8. The collector of the sixth transistor Q6 is connected to the gate of the first MOSFET Q12 and the second positive power input terminal 12V, respectively. The base of the sixth transistor Q6 is connected to the sixth control terminal Z6 of the control chip, and the emitter of the sixth transistor Q6 is grounded. The collector of the seventh transistor Q7 is connected to the gate of the second MOSFET Q13 and the second positive power input terminal 12V, respectively. The base of the seventh transistor Q7 is connected to the seventh control terminal Z7 of the control chip, and the emitter of the seventh transistor Q7 is grounded. The collector of the eighth transistor Q8 is connected to the gate of the third MOSFET Q14 and the second positive power input terminal 12V, respectively. The base of the eighth transistor Q8 is connected to the eighth control terminal Z8 of the control chip, and the emitter of the eighth transistor Q8 is grounded. During the stove's flameout control process, the control chip sends low-level signals to the bases of transistors Q6, Q7, and Q8, causing them to turn off. This, in turn, turns on MOSFETs Q12, Q13, and Q14. The 12V positive power input is then output as a reverse voltage to the main thermocouple coil L2 through MOSFETs Q12, Q13, and Q14, thus controlling the stove's flameout. This reverse voltage is opposite in direction to the -3.3V negative power input.

[0025] Specifically, the stove's thermocouple solenoid valve control circuit also includes resistors R22 (22nd), R23 (23rd), R24 (24th), R25 (25th), R26 (26th), R27 (27th), R28 (28th), R29 (29th), R30 (30th), and R31 (31st), capacitors C1 and C2, diodes D2 and D4, and diode D5. The sixth control terminal Z6 of the control chip is connected to the base of transistor Q6 via resistor R22. The first terminal of resistor R23 is connected to resistor R22. Between resistor R22 and the base of transistor Q6, the second end of resistor R23 is grounded. The seventh control terminal Z7 of the control chip is connected to the base of transistor Q7 through resistor R24. The first end of resistor R25 is connected between resistor R24 ​​and the base of transistor Q7, and the second end of resistor R25 is grounded. The eighth control terminal Z8 of the control chip is connected to the base of transistor Q8 through resistor R26. The first end of resistor R27 is connected between resistor R26 and the base of transistor Q8, and the second end of resistor R27 is grounded. The second positive power input terminal 12V is connected to the positive terminal of the second diode D2. The negative terminal of the second diode D2 is connected to the first terminal of the thirty-first resistor R31. The second terminal of the thirty-first resistor R31 is connected to the drain of the first MOSFET Q12, the drain of the second MOSFET Q13, the drain of the third MOSFET Q14, the second terminal of the second capacitor C2, and the positive terminal of the fourth diode D4. The negative terminal of the fourth diode D4 is connected to the first terminal of the twenty-eighth resistor R28, the first terminal of the twenty-ninth resistor R29, the first terminal of the thirtieth resistor R30, and the second terminal of the first capacitor C1. The second terminal of the twenty-eighth resistor R28 is connected to the gate of the first MOSFET Q12 and the collector of the sixth transistor Q6. The second terminal of the twenty-ninth resistor R29 is connected to the gate of the second MOSFET Q13 and the collector of the seventh transistor Q7. The second terminal of the thirtieth resistor R30 is connected to the gate of the third MOSFET Q14 and the collector of the eighth transistor Q8. The fifth diode D5 is connected to both ends of the first thermocouple main coil L2.

[0026] Understandably, the control circuit for the thermocouple solenoid valve of the stove also includes a ninth transistor Q9, a thirteenth transistor Q10, and an eleventh transistor Q11. The emitter of the ninth transistor Q9 is connected to the first positive power input terminal 5V, the base of the ninth transistor Q9 is connected to the first control terminal Z1 of the control chip, and the collector of the ninth transistor Q9 is connected to the base of the first transistor Q1. The emitter of the thirteenth transistor Q10 is connected to the first positive power input terminal 5V, the base of the thirteenth transistor Q10 is connected to the second control terminal Z2 of the control chip, and the collector of the thirteenth transistor Q10 is connected to the base of the second transistor Q2. The emitter of the eleventh transistor Q11 is connected to the first positive power input terminal 5V, the base of the eleventh transistor Q11 is connected to the third control terminal Z3 of the control chip, and the collector of the eleventh transistor Q11 is connected to the base of the third transistor Q3. During stove ignition, the control chip controls transistors Q9, Q10, and Q11, which in turn turn on transistors Q1, Q2, and Q3. This connects the first thermocouple sub-coil L1 to the negative power input terminal -3.3V, thereby controlling the thermocouple to close and ignite the stove. Conversely, during stove flameout control, transistors Q1, Q2, and Q3 are all in the off state.

[0027] Specifically, the stove's thermocouple solenoid valve control circuit also includes a first resistor R1, a second resistor R2, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, and a third diode D3. The fourth control terminal Z4 of the control chip is connected to the base of the fourth transistor Q4 through the first resistor R1, and the fifth control terminal Z5 of the control chip is connected to the base of the second resistor R4 through the first resistor R1. Resistor R2 is connected to the base of the fourth transistor Q4. The collector of the fourth transistor Q4 is connected to the first terminal of the fifth resistor R5. The collector of the fifth transistor Q5 is connected to the first terminal of the sixth resistor R6. The negative terminal of the third diode D3 is connected to the second terminals of the fifth resistor R5, the sixth resistor R6, the first thermocouple sub-coil L1, and the first terminal of the nineteenth resistor R19. The second terminal of the nineteenth resistor R19 is connected to the collector of the first transistor Q1. The seventh resistor R7 is connected to the emitter and base of the ninth transistor Q9. The first control terminal Z1 of the control chip is connected to the ninth transistor Q9 through the eighth resistor R8. The base connection is as follows: the collector of the ninth transistor Q9 is connected to the base of the first transistor Q1 through the ninth resistor R9; the first end of the tenth resistor R10 is connected between the ninth resistor R9 and the base of the first transistor Q1; the second end of the tenth resistor R10 is connected to the negative power input terminal -3.3V; the eleventh resistor R11 is connected to the emitter and base of the thirteenth transistor Q10; the second control terminal Z2 of the control chip is connected to the base of the thirteenth transistor Q10 through the twelfth resistor R12; the collector of the thirteenth transistor Q10 is connected to the base of the second transistor Q2 through the thirteenth resistor R13; and the first end of the fourteenth resistor R14 is connected to the base of the first transistor Q10. The thirteenth resistor R13 is connected to the base of the second transistor Q2. The second end of the fourteenth resistor R14 is connected to the negative power supply input terminal -3.3V. The fifteenth resistor R15 is connected to the emitter and base of the eleventh transistor Q11. The third control terminal Z3 of the control chip is connected to the base of the eleventh transistor Q11 through the sixteenth resistor R16. The collector of the eleventh transistor Q11 is connected to the base of the third transistor Q3 through the seventeenth resistor R17. The first end of the eighteenth resistor R18 is connected between the seventeenth resistor R17 and the base of the third transistor Q3. The second end of the eighteenth resistor R18 is connected to the negative power supply input terminal -3.3V.

[0028] It is understandable that the control circuit of the thermocouple solenoid valve in the stove also includes a first detection branch. This first detection branch includes a first diode D1, a twentieth resistor R20, and a twenty-first resistor R21. The negative terminal of the first diode D1 is connected to the emitter of the first transistor Q1 and the collector of the second transistor Q2. The positive terminal of the first diode D1 is connected to the first positive power input terminal 5V through the twentieth resistor R20. The positive terminal of the first diode D1 is connected to the first detection terminal Z9 of the control chip through the twenty-first resistor R21. When the first transistor Q1, the second transistor Q2, and the third transistor Q3 are all off, if a short circuit occurs in any of these transistors, the level of the first detection terminal Z9 of the control chip will change. Therefore, the control chip can determine whether a short circuit has occurred in the first transistor Q1, the second transistor Q2, and the third transistor Q3 by observing the level change at the first detection terminal Z9.

[0029] Understandably, the thermocouple solenoid valve control circuit of the stove also includes a second detection branch, which includes a third resistor R3. The second detection terminal Z10 of the control chip is connected to the collector of the fourth transistor Q4 through the third resistor R3. When the fourth transistor Q4 is in the off state, if the fourth transistor Q4 is short-circuited, the level of the second detection terminal Z10 will change. Therefore, the control chip can determine whether the fourth transistor Q4 is short-circuited by the level change of the second detection terminal Z10.

[0030] Understandably, the control circuit for the thermocouple solenoid valve in the stove also includes a third detection branch. This third detection branch includes a fourth resistor R4, and the third detection terminal Z11 of the control chip is connected to the collector of the fifth transistor Q5 through the fourth resistor R4. When the fifth transistor Q5 is in the off state, if the fifth transistor Q5 is short-circuited, the level of the third detection terminal Z11 will change. Therefore, the control chip can determine whether the fifth transistor Q5 is short-circuited by observing the level change of the third detection terminal Z11.

[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A thermocouple solenoid valve control circuit for a stove, characterized in that, include: The system comprises a control chip, a first positive power input terminal, a second positive power input terminal, a negative power input terminal, a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a first MOSFET, a second MOSFET, a third MOSFET, a first thermocouple sub-coil, and a first thermocouple main coil. The first terminal of the first thermocouple sub-coil is grounded, and the second terminal of the first thermocouple sub-coil is connected to the collectors of the first, fourth, and fifth transistors, respectively. The base of the first transistor is connected to the first control terminal of the control chip. The emitter of the first transistor is connected to the collector of the second transistor. The base of the second transistor is connected to the second control terminal of the control chip. The emitter of the second transistor is connected to the collector of the third transistor. The base of the third transistor is connected to the third control terminal of the control chip. The emitter of the third transistor is connected to the negative power input terminal. The base of the fourth transistor is connected to the fourth control terminal of the control chip. The base of the fifth transistor is connected to the fifth control terminal of the control chip. The first positive power input terminal is connected to the emitters of the fourth and fifth transistors respectively. The second positive power input terminal is connected to the drains of the first, second, and third MOSFETs respectively. The gate of the first MOSFET is connected to the sixth control terminal of the control chip. The gate of the second MOSFET is connected to the seventh control terminal of the control chip. The gate of the third MOSFET is connected to the eighth control terminal of the control chip. The first end of the first thermocouple main coil is connected to the source of the first, second, and third MOSFETs respectively.

2. The stove thermocouple solenoid valve control circuit according to claim 1, characterized in that, The stove's thermocouple solenoid valve control circuit further includes a sixth transistor, a seventh transistor, and an eighth transistor. The collector of the sixth transistor is connected to the gate of the first MOSFET and the second positive power input terminal, respectively. The base of the sixth transistor is connected to the sixth control terminal of the control chip, and the emitter of the sixth transistor is grounded. The collector of the seventh transistor is connected to the gate of the second MOSFET and the second positive power input terminal, respectively. The base of the seventh transistor is connected to the seventh control terminal of the control chip, and the emitter of the seventh transistor is grounded. The collector of the eighth transistor is connected to the gate of the third MOSFET and the second positive power input terminal, respectively. The base of the eighth transistor is connected to the eighth control terminal of the control chip, and the emitter of the eighth transistor is grounded.

3. The stove thermocouple solenoid valve control circuit according to claim 1, characterized in that, The stove's thermocouple solenoid valve control circuit further includes a ninth transistor, a thirteenth transistor, and an eleventh transistor. The emitter of the ninth transistor is connected to the first positive power input terminal, the base of the ninth transistor is connected to the first control terminal of the control chip, the collector of the ninth transistor is connected to the base of the first transistor, the emitter of the thirteenth transistor is connected to the first positive power input terminal, the base of the thirteenth transistor is connected to the second control terminal of the control chip, the collector of the thirteenth transistor is connected to the base of the second transistor, the emitter of the eleventh transistor is connected to the first positive power input terminal, the base of the eleventh transistor is connected to the third control terminal of the control chip, and the collector of the eleventh transistor is connected to the base of the third transistor.

4. The stove thermocouple solenoid valve control circuit according to claim 2, characterized in that, The stove thermocouple solenoid valve control circuit also includes a first capacitor, the first terminal of which is grounded, and the second terminal of which is connected to the gate of the first MOS transistor, the collector of the sixth transistor, the gate of the second MOS transistor, the collector of the seventh transistor, the gate of the third MOS transistor, the collector of the eighth transistor, and the second positive power input terminal.

5. The stove thermocouple solenoid valve control circuit according to claim 2, characterized in that, The stove thermocouple solenoid valve control circuit also includes a second capacitor. The first terminal of the second capacitor is grounded, and the second terminal of the second capacitor is connected to the gate of the first MOS transistor, the collector of the sixth transistor, the gate of the second MOS transistor, the collector of the seventh transistor, the gate of the third MOS transistor, the collector of the eighth transistor, and the second positive power input terminal.

6. The stove thermocouple solenoid valve control circuit according to claim 1, characterized in that, The stove thermocouple solenoid valve control circuit further includes a first detection branch, which includes a first diode, a twentieth resistor, and a twenty-first resistor. The negative terminal of the first diode is connected to the emitter of the first transistor and the collector of the second transistor, respectively. The positive terminal of the first diode is connected to the first positive power input terminal through the twentieth resistor, and the positive terminal of the first diode is connected to the first detection terminal of the control chip through the twenty-first resistor.

7. The stove thermocouple solenoid valve control circuit according to claim 1, characterized in that, The stove thermocouple solenoid valve control circuit also includes a second detection branch, which includes a third resistor. The second detection terminal of the control chip is connected to the collector of the fourth transistor through the third resistor.

8. The stove thermocouple solenoid valve control circuit according to claim 1, characterized in that, The stove thermocouple solenoid valve control circuit also includes a third detection branch, which includes a fourth resistor. The third detection terminal of the control chip is connected to the collector of the fifth transistor through the fourth resistor.

9. The stove thermocouple solenoid valve control circuit according to claim 1, characterized in that, The stove thermocouple solenoid valve control circuit also includes a second diode. The positive terminal of the second diode is connected to the second positive power input terminal, and the negative terminal of the second diode is connected to the drain of the first MOS transistor, the drain of the second MOS transistor, and the drain of the third MOS transistor, respectively.

10. The stove thermocouple solenoid valve control circuit according to claim 1, characterized in that, The stove thermocouple solenoid valve control circuit also includes a third diode. The positive terminal of the third diode is connected to the negative power input terminal, and the negative terminal of the third diode is connected to the second terminal of the first thermocouple sub-coil and the collector of the first transistor, respectively.

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