Combustion time control circuit for gas stove

Abstract

The invention discloses a combustion time control circuit for a gas stove, which comprises a time control circuit, and the time control circuit comprises a power supply filtering module, a power supply conversion module, a buzzer module, a main chip, a main valve control module, an adjusting proportional valve control module, a control screen and a thermocouple, the power supply filtering module, the power supply conversion module, the buzzer module, the main valve control module, the adjusting proportional valve control module, the control screen and the thermocouple are all connected with the main chip, and the power supply filtering module comprises an electromotive force E1 and a capacitor C1. Combustion time is set on the control screen, after the master control time reaches the preset time, a signal is transmitted to the thermocouple, the thermocouple controls the proportional valve to close gas, the phenomenon that ignition is interrupted due to the fact that a power-off contact is prone to being damaged at a high speed is avoided, and the use stability of the gas stove is improved.

Description

Technical Field

[0001] The invention relates to the technical field of gas stoves, in particular to a combustion time control circuit for a gas stove. Background Art

[0002] The main function of a gas stove is to heat food by burning gaseous fuels such as liquefied petroleum gas (liquid), artificial coal gas, and natural gas. This kitchen appliance is widely used in homes and commercial kitchens and is popular for its high efficiency and convenience. The gas stove has high heating efficiency and can quickly heat food to the required temperature to meet the needs of fast cooking. The gas stove is equipped with a combustion time control circuit, which adjusts the working time of the burner, that is, the on-off time of the burner, to achieve regional temperature regulation. This digital control technology is based on the regional temperature of the heat treatment furnace, controls the combustion time through pulse width modulation, realizes automatic steel burning, and achieves the purpose of improving heating quality.

[0003] However, the traditional burning time control circuit has the following disadvantages:

[0004] The traditional combustion time control circuit is a contact ignition control, which connects and cuts off the primary current of the ignition coil through the power-off contact, so that the ignition coil generates high voltage and is easy to be cut off at high speed: because the power-off contact is easily damaged at high speed, resulting in ignition interruption. Summary of the invention

[0005] The object of the present invention is to provide a combustion time control circuit for a gas stove, so as to solve the problem that the traditional combustion time control circuit proposed in the above background technology is a contact ignition control, which connects and cuts off the primary current of the ignition coil through the power-off contact, so that the ignition coil generates high voltage and is easy to be cut off at high speed: because the power-off contact is easily damaged at high speed, resulting in ignition interruption.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a combustion time control circuit for a gas stove, comprising a time control circuit, the time control circuit comprising a power filter module, a power conversion module, a buzzer module, a main chip, a main valve control module, a regulating proportional valve control module, a control panel and a thermocouple, the power filter module, the power conversion module, the buzzer module, the main valve control module, the regulating proportional valve control module, the control panel and the thermocouple are all connected to the main chip, the power filter module comprises an electromotive force E1, a capacitor C1, a resistor R3, an electromotive force E2, a capacitor C2, a capacitor C3, an electromotive force E3, a capacitor C4, a capacitor C5 and an electromotive force E4, the power conversion module comprises a capacitor CN8, a capacitor C18, a capacitor C19, an integrated circuit IC4, a diode D1, an electromotive force E5, a capacitor C20 and an inductor L1, the buzzer module comprises a buzzer FMQ1, a buzzer FM Q2, transistor Q2, transistor Q3, electromotive force E6, resistor R2, transistor Q1, resistor R2, resistor R19, resistor R4, resistor R20 and buzzer BUZ1, the main chip includes resistor R22, resistor R21, resistor R54, resistor R55, resistor R23, resistor R24, resistor R25, resistor R26, resistor R27, resistor R59, resistor R58, resistor R56, resistor R57, resistor R28, resistor R29, resistor R30, resistor R31, resistor R32, resistor R33, resistor R34, resistor R60 and integrated circuit IC5, the main valve control module includes a first main valve control module and a second main valve control module, the regulating proportional valve control module includes a first regulating proportional valve control module, a second regulating proportional valve control module, a third regulating proportional valve control module, a fourth regulating proportional valve control module and a fifth regulating proportional valve control module.

[0007] Preferably, one end of the electromotive force E1, one end of the capacitor C1, one end of the resistor R3, one end of the electromotive force E2, one end of the capacitor C2, one end of the capacitor C3, one end of the electromotive force E3, one end of the capacitor C4, one end of the capacitor C5 and one end of the electromotive force E4 are all connected to +5V, the other end of the electromotive force E1, the other end of the capacitor C1, the other end of the resistor R3, the other end of the electromotive force E2, the other end of the capacitor C2, the other end of the capacitor C3, the other end of the electromotive force E3, the other end of the capacitor C4, the other end of the capacitor C5 and the other end of the electromotive force E4 are all grounded, and the electromotive force E1, capacitor C1, resistor R3, electromotive force E2, capacitor C2, capacitor C3, electromotive force E3, capacitor C4, capacitor C5 and electromotive force E4 are connected in parallel with each other.

[0008] Preferably, two ends of the capacitor CN8 are respectively connected to one end of the capacitor C18, one end of the capacitor C19 and one end of the integrated circuit IC4, the other end of the integrated circuit IC4 is connected to one end of the inductor L1, the connection between the integrated circuit IC4 and the inductor L1 is connected to one end of the diode D1, the other end of the inductor L1 is respectively connected to one end of the electromotive force E5 and one end of the capacitor C20, one end of the capacitor CN8, the other end of the capacitor C18, the other end of the capacitor C19, the surface of the integrated circuit IC4, the other end of the diode D1, the other end of the electromotive force E5 and the other end of the capacitor C20 are all grounded, and the surface of the capacitor CN8 is connected to an adapter.

[0009] Preferably, the buzzer BUZ1 is connected in parallel with the resistor R20, one end of the resistor 20 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the transistor Q2, the other end of the transistor Q2 is connected to one end of the buzzer FMQ1, the other end of the resistor R20 and one end of R2 are both connected to one end of the transistor Q1, the other end of the transistor Q1 is respectively connected to one end of the resistor R4 and one end of the resistor R19, the other end of the resistor R19 is connected to one end of the transistor Q3, the other end of the transistor Q3 is connected to one end of the buzzer FMQ2, the other end of the resistor R4 and the surface of the transistor Q1 are both connected to +24V, the other end of the resistor R2 is connected to one end of the electromotive force E6, and the surface of the transistor Q2, the surface of the transistor Q3 and the other end of the electromotive force E6 are all grounded.

[0010] Preferably, the 5th pin of the integrated power IC5 is connected to one end of the resistor R22, the 6th pin of the integrated power IC5 is connected to one end of the resistor R21, the 7th pin of the integrated power IC5 is connected to one end of the resistor R54, the 8th pin of the integrated power IC5 is connected to one end of the resistor R55, the 9th pin of the integrated power IC5 is connected to one end of the resistor R23, the 10th pin of the integrated power IC5 is connected to one end of the resistor R24, the 11th pin of the integrated power IC5 is connected to one end of the resistor R25, the 12th pin of the integrated power IC5 is connected to one end of the resistor R26, the 13th pin of the integrated power IC5 is connected to one end of the resistor R27, the 14th pin of the integrated power IC5 is connected to one end of the resistor R59, and the 28th pin of the integrated power IC5 is connected to one end of the resistor R26. Pin 27 of the integrated power IC5 is connected to one end of the resistor R58, pin 27 of the integrated power IC5 is connected to one end of the resistor R56, pin 26 of the integrated power IC5 is connected to one end of the resistor R57, pin 25 of the integrated power IC5 is connected to one end of the resistor R28, pin 24 of the integrated power IC5 is connected to one end of the resistor R29, pin 23 of the integrated power IC5 is connected to one end of the resistor R30, pin 22 of the integrated power IC5 is connected to one end of the resistor R31, pin 21 of the integrated power IC5 is connected to one end of the resistor R32, pin 20 of the integrated power IC5 is connected to one end of the resistor R33, pin 19 of the integrated power IC5 is connected to one end of the resistor R34, and pin 15 of the integrated power IC5 is connected to one end of the resistor R60.

[0011] Preferably, the first main valve control module includes a resistor R18, a diode D25, a main valve 12 and a transistor Q27, one end of the transistor Q27 is respectively connected to one end of the diode D25 and one end of the main valve 12, the other end of the main valve 12 and the other end of the diode D25 are both connected to +24V, the other end of the transistor Q27 is connected to one end of the resistor R18, the connection between the transistor Q27 and the resistor R18 is connected to ZF2, the connection between the transistor Q27 and the diode D25 is connected to ZF-OUT2, and the other end of the resistor R18 and the surface of the transistor Q27 are both grounded.

[0012] Preferably, the second main valve control module includes a resistor R16, a diode D24, a main valve 11 and a transistor Q26, one end of the transistor Q26 is respectively connected to one end of the diode D24 and one end of the main valve 11, the other end of the main valve 11 and the other end of the diode D24 are both connected to +24V, the other end of the transistor Q26 is connected to one end of the resistor R16, the connection between the transistor Q26 and the resistor R16 is connected to ZF1, the connection between the transistor Q26 and the diode D24 is connected to ZF-OUT1, and the other end of the resistor R16 and the surface of the transistor Q26 are both grounded.

[0013] Preferably, the first regulating proportional valve control module includes a transistor Q4, a resistor R5, a capacitor C25, a capacitor C15, a resistor R66, a resistor R75, a diode D4, a transistor Q9, an operational amplifier IC6A, a proportional right valve, a resistor R6 and a resistor R61, one end of the transistor Q4 is connected to one end pin of the operational amplifier IC6A, the two ends of the connection between the transistor Q4 and the operational amplifier IC6A are respectively connected to the two ends of the resistor R5, the two ends of the operational amplifier IC6A are respectively connected to one end of the capacitor C25 and one end of the resistor R66, the other end of the resistor R66 is respectively connected to one end of the proportional right valve and one end of the resistor R75, and the other end of the proportional right valve The surface of the transistor Q9 is connected to one end of the transistor Q9, and the other end of the transistor Q9 is respectively connected to one end of the resistor R6 and one end of the resistor R61. The other end of the resistor R6 and the surface of the transistor Q9 are both connected to +24V. The other end of the resistor R61 is connected to the surface of the transistor Q4. The 3-pin of the operational amplifier IC6A is connected to one end of the capacitor C15. The surface of the proportional right valve is connected to one end of the diode D4. The surface of the operational amplifier IC6A is connected to BL1. The two sides of the proportional right valve are respectively connected to BLR1- and BLR1+. The other end of the capacitor C15, the other end of the capacitor C25, the other end of the resistor R75 and the other end of the diode D4 are all grounded.

[0014] Preferably, the second regulating proportional valve control module includes a transistor Q7, a resistor R11, a capacitor C23, a capacitor C11, a resistor R69, a resistor R73, a diode D7, a transistor Q12, an operational amplifier IC7B, a proportional left valve, a resistor R12 and a resistor R64, one end of the transistor Q7 is connected to one end pin of the operational amplifier IC7B, two ends of the connection between the transistor Q7 and the operational amplifier IC7B are respectively connected to two ends of the resistor R11, two ends of the operational amplifier IC7B are respectively connected to one end of the capacitor C23 and one end of the resistor R69, the other end of the resistor R69 is respectively connected to one end of the proportional left valve and one end of the resistor R73, and the other end of the proportional left valve The surface of the transistor Q7 is connected to one end of the proportional left valve, and the other end of the transistor Q12 is connected to one end of the resistor R12 and one end of the resistor R64 respectively. The other end of the resistor R12 and the surface of the transistor Q12 are both connected to +24V. The other end of the resistor R64 is connected to the surface of the transistor Q7. The 3-pin of the operational amplifier IC7B is connected to one end of the capacitor C11. The surface of the proportional left valve is connected to one end of the diode D4. The surface of the operational amplifier IC7B is connected to BL4. The two sides of the proportional left valve are respectively connected to BLL4- and BLL4+. The other end of the capacitor C11, the other end of the capacitor C23, the other end of the resistor R73 and the other end of the diode D7 are all grounded.

[0015] Preferably, the third regulating proportional valve control module includes a transistor Q8, a resistor R13, a capacitor C24, a capacitor C12, a resistor R70, a resistor R74, a diode D8, a transistor Q13, an operational amplifier IC8A, a proportional left valve, a resistor R14 and a resistor R65, one end of the transistor Q8 is connected to one end pin of the operational amplifier IC8A, the two ends of the connection between the transistor Q8 and the operational amplifier IC8A are respectively connected to the two ends of the resistor R13, the two ends of the operational amplifier IC8A are respectively connected to one end of the capacitor C24 and one end of the resistor R70, the other end of the resistor R70 is respectively connected to one end of the proportional left valve and one end of the resistor R74, and the other end of the proportional left valve The surface of the transistor Q13 is connected to one end of the transistor Q13, the other end of the transistor Q13 is respectively connected to one end of the resistor R14 and one end of the resistor R65, the other end of the resistor R14 and the surface of the transistor Q13 are both connected to +24V, the other end of the resistor R65 is connected to the surface of the transistor Q8, the 3-pin of the operational amplifier IC8A is connected to one end of the capacitor C12, the surface of the proportional left valve is connected to one end of the diode D4, the surface of the operational amplifier IC8A is connected to BL5, the two sides of the proportional left valve are respectively connected to BLL5- and BLL5+, the other end of the capacitor C12, the other end of the capacitor C24, the other end of the resistor R74 and the other end of the diode D8 are all grounded.

[0016] Preferably, the fourth regulating proportional valve control module includes a transistor Q5, a resistor R7, a capacitor C21, a capacitor C9, a resistor R67, a resistor R71, a diode D5, a transistor Q10, an operational amplifier IC6B, a proportional left valve, a resistor R8 and a resistor R62, one end of the transistor Q5 is connected to one end pin of the operational amplifier IC6B, the two ends of the connection between the transistor Q5 and the operational amplifier IC6B are respectively connected to the two ends of the resistor R7, the two ends of the operational amplifier IC6B are respectively connected to one end of the capacitor C21 and one end of the resistor R67, the other end of the resistor R67 is respectively connected to one end of the proportional left valve and one end of the resistor R71, and the other end of the proportional left valve The surface of the transistor Q5 is connected to the 3-pin terminal of the operational amplifier IC6B and one end of the capacitor C9. The surface of the proportional left valve is connected to one end of the diode D4. The surface of the operational amplifier IC6B is connected to BL2. The two sides of the proportional left valve are respectively connected to BLL2- and BLL2+. The other end of the capacitor C9, the other end of the capacitor C21, the other end of the resistor R71 and the other end of the diode D5 are all grounded.

[0017] Preferably, the fifth regulating proportional valve control module includes a transistor Q6, a resistor R9, a capacitor C22, a capacitor C10, a resistor R68, a resistor R72, a diode D6, a transistor Q11, an operational amplifier IC7A, a proportional right valve, a resistor R10 and a resistor R63, one end of the transistor Q6 is connected to the 1 end pin of the operational amplifier IC7A, the two ends of the connection between the transistor Q6 and the operational amplifier IC7A are respectively connected to the two ends of the resistor R10, the 2 ends of the operational amplifier IC7A are respectively connected to one end of the capacitor C22 and one end of the resistor R68, the other end of the resistor R68 is respectively connected to one end of the proportional right valve and one end of the resistor R72, and the other end of the proportional right valve The surface of the transistor Q11 is connected to one end of the transistor Q11, and the other end of the transistor Q11 is respectively connected to one end of the resistor R10 and one end of the resistor R63. The other end of the resistor R6 and the surface of the transistor Q11 are both connected to +24V. The other end of the resistor R63 is connected to the surface of the transistor Q6. The 3-pin of the operational amplifier IC7A is connected to one end of the capacitor C10. The surface of the proportional right valve is connected to one end of the diode D6. The surface of the operational amplifier IC7A is connected to BL3. The two sides of the proportional right valve are respectively connected to BLR3- and BLR3+. The other end of the capacitor C10, the other end of the capacitor C22, the other end of the resistor R72 and the other end of the diode D6 are all grounded.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting a main valve control module and an adjusting proportional valve control module, the combustion time is set on the control panel, and after the main control time reaches the preset time, a signal is transmitted to the thermocouple, and the thermocouple controls the proportional valve to shut off the gas, thereby avoiding the phenomenon that the power-off contacts are easily damaged at high speed, resulting in ignition interruption, and improving the stability of the gas stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a time control circuit of the present invention;

[0020] Figure 2 is a schematic diagram of a power supply filter module of the present invention;

[0021] Figure 3 is a schematic diagram of a power conversion module of the present invention;

[0022] Figure 4 is a schematic diagram of a first main valve control module of the present invention;

[0023] Figure 5 is a schematic diagram of a second main valve control module of the present invention;

[0024] Figure 6 is a schematic diagram of a buzzer module of the present invention;

[0025] Figure 7 is a schematic diagram of the main chip of the present invention;

[0026] Figure 8 is a schematic diagram of a first regulating proportional valve control module of the present invention;

[0027] Fig. 9 is a schematic diagram of a second regulating proportional valve control module of the present invention;

[0028] Fig.10 is a schematic diagram of a third regulating proportional valve control module of the present invention;

[0029] Fig.11 is a schematic diagram of a fourth regulating proportional valve control module of the present invention;

[0030] Fig.12 It is a schematic diagram of a fifth regulating proportional valve control module of the present invention. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] See also Figure 1-12The present invention provides a combustion time control circuit for a gas stove, including a time control circuit, the time control circuit including a power filter module, a power conversion module, a buzzer module, a main chip, a main valve control module, an adjustment proportional valve control module, a control screen and a thermocouple, the power filter module, the power conversion module, the buzzer module, the main valve control module, the adjustment proportional valve control module, the control screen and the thermocouple are all connected to the main chip, the power filter module includes an electromotive force E1, a capacitor C1, a resistor R3, an electromotive force E2, a capacitor C2, a capacitor C3, an electromotive force E3, a capacitor C4, a capacitor C5 and an electromotive force E4, the power conversion module includes a capacitor CN8, a capacitor C18, a capacitor C19, an integrated circuit IC4, a diode D1, an electromotive force E5, a capacitor C20 and an inductor L1, the buzzer module includes a buzzer FMQ1, a buzzer FMQ2, a transistor Q2 , transistor Q3, electromotive force E6, resistor R2, transistor Q1, resistor R2, resistor R19, resistor R4, resistor R20 and buzzer BUZ1, the main chip includes resistor R22, resistor R21, resistor R54, resistor R55, resistor R23, resistor R24, resistor R25, resistor R26, resistor R27, resistor R59, resistor R58, resistor R56, resistor R57, resistor R28, resistor R29, resistor R30, resistor R31, resistor R32, resistor R33, resistor R34, resistor R60 and integrated circuit IC5, the main valve control module includes a first main valve control module and a second main valve control module, the regulating proportional valve control module includes a first regulating proportional valve control module, a second regulating proportional valve control module, a third regulating proportional valve control module, a fourth regulating proportional valve control module and a fifth regulating proportional valve control module.

[0033] One end of the electromotive force E1, one end of the capacitor C1, one end of the resistor R3, one end of the electromotive force E2, one end of the capacitor C2, one end of the capacitor C3, one end of the electromotive force E3, one end of the capacitor C4, one end of the capacitor C5 and one end of the electromotive force E4 are all connected to +5V, the other end of the electromotive force E1, the other end of the capacitor C1, the other end of the resistor R3, the other end of the electromotive force E2, the other end of the capacitor C2, the other end of the capacitor C3, the other end of the electromotive force E3, the other end of the capacitor C4, the other end of the capacitor C5 and the other end of the electromotive force E4 are all grounded, and the electromotive force E1, capacitor C1, resistor R3, electromotive force E2, capacitor C2, capacitor C3, electromotive force E3, capacitor C4, capacitor C5 and electromotive force E4 are connected in parallel with each other.

[0034] Two ends of capacitor CN8 are respectively connected to one end of capacitor C18, one end of capacitor C19 and one end of integrated circuit IC4, the other end of integrated circuit IC4 is connected to one end of inductor L1, the connection between integrated circuit IC4 and inductor L1 is connected to one end of diode D1, the other end of inductor L1 is respectively connected to one end of electromotive force E5 and one end of capacitor C20, one end of capacitor CN8, the other end of capacitor C18, the other end of capacitor C19, the surface of integrated circuit IC4, the other end of diode D1, the other end of electromotive force E5 and the other end of capacitor C20 are all grounded, and the surface of capacitor CN8 is connected to an adapter.

[0035] Buzzer BUZ1 is connected in parallel with resistor R20, one end of resistor 20 is connected to one end of resistor R1, the other end of resistor R1 is connected to one end of transistor Q2, the other end of transistor Q2 is connected to one end of buzzer FMQ1, the other end of resistor R20 and one end of R2 are both connected to one end of transistor Q1, the other end of transistor Q1 is respectively connected to one end of resistor R4 and one end of resistor R19, the other end of resistor R19 is connected to one end of transistor Q3, the other end of transistor Q3 is connected to one end of buzzer FMQ2, the other end of resistor R4 and the surface of transistor Q1 are both connected to +24V, the other end of resistor R2 is connected to one end of electromotive force E6, the surface of transistor Q2, the surface of transistor Q3 and the other end of electromotive force E6 are all grounded.

[0036] The 5th pin of the integrated power IC5 is connected to one end of the resistor R22, the 6th pin of the integrated power IC5 is connected to one end of the resistor R21, the 7th pin of the integrated power IC5 is connected to one end of the resistor R54, the 8th pin of the integrated power IC5 is connected to one end of the resistor R55, the 9th pin of the integrated power IC5 is connected to one end of the resistor R23, the 10th pin of the integrated power IC5 is connected to one end of the resistor R24, the 11th pin of the integrated power IC5 is connected to one end of the resistor R25, the 12th pin of the integrated power IC5 is connected to one end of the resistor R26, the 13th pin of the integrated power IC5 is connected to one end of the resistor R27, the 14th pin of the integrated power IC5 is connected to one end of the resistor R59, and the 28th pin of the integrated power IC5 is connected to the resistor R26. One end of resistor R58 is connected, pin 27 of the integrated power IC5 is connected to one end of resistor R56, pin 26 of the integrated power IC5 is connected to one end of resistor R57, pin 25 of the integrated power IC5 is connected to one end of resistor R28, pin 24 of the integrated power IC5 is connected to one end of resistor R29, pin 23 of the integrated power IC5 is connected to one end of resistor R30, pin 22 of the integrated power IC5 is connected to one end of resistor R31, pin 21 of the integrated power IC5 is connected to one end of resistor R32, pin 20 of the integrated power IC5 is connected to one end of resistor R33, pin 19 of the integrated power IC5 is connected to one end of resistor R34, and pin 15 of the integrated power IC5 is connected to one end of resistor R60.

[0037] The first main valve control module includes a resistor R18, a diode D25, a main valve 12 and a transistor Q27, one end of the transistor Q27 is respectively connected to one end of the diode D25 and one end of the main valve 12, the other end of the main valve 12 and the other end of the diode D25 are both connected to +24V, the other end of the transistor Q27 is connected to one end of the resistor R18, the connection between the transistor Q27 and the resistor R18 is connected to ZF2, the connection between the transistor Q27 and the diode D25 is connected to ZF-OUT2, and the other end of the resistor R18 and the surface of the transistor Q27 are both grounded.

[0038] The second main valve control module includes a resistor R16, a diode D24, a main valve 11 and a transistor Q26, one end of the transistor Q26 is respectively connected to one end of the diode D24 and one end of the main valve 11, the other end of the main valve 11 and the other end of the diode D24 are both connected to +24V, the other end of the transistor Q26 is connected to one end of the resistor R16, the connection between the transistor Q26 and the resistor R16 is connected to ZF1, the connection between the transistor Q26 and the diode D24 is connected to ZF-OUT1, and the other end of the resistor R16 and the surface of the transistor Q26 are both grounded.

[0039] The first regulating proportional valve control module includes a transistor Q4, a resistor R5, a capacitor C25, a capacitor C15, a resistor R66, a resistor R75, a diode D4, a transistor Q9, an operational amplifier IC6A, a proportional right valve, a resistor R6 and a resistor R61. One end of the transistor Q4 is connected to pin 1 of the operational amplifier IC6A, and both ends of the connection between the transistor Q4 and the operational amplifier IC6A are respectively connected to both ends of the resistor R5. Pin 2 of the operational amplifier IC6A is respectively connected to one end of the capacitor C25 and one end of the resistor R66. The other end of the resistor R66 is respectively connected to one end of the proportional right valve and one end of the resistor R75. The other end of the proportional right valve It is connected to one end of the transistor Q9, the other end of the transistor Q9 is respectively connected to one end of the resistor R6 and one end of the resistor R61, the other end of the resistor R6 and the surface of the transistor Q9 are both connected to +24V, the other end of the resistor R61 is connected to the surface of the transistor Q4, the 3-pin of the operational amplifier IC6A is connected to one end of the capacitor C15, the surface of the proportional right valve is connected to one end of the diode D4, the surface of the operational amplifier IC6A is connected to BL1, the two sides of the proportional right valve are respectively connected to BLR1- and BLR1+, the other end of the capacitor C15, the other end of the capacitor C25, the other end of the resistor R75 and the other end of the diode D4 are all grounded.

[0040] The second regulating proportional valve control module includes a transistor Q7, a resistor R11, a capacitor C23, a capacitor C11, a resistor R69, a resistor R73, a diode D7, a transistor Q12, an operational amplifier IC7B, a proportional left valve, a resistor R12 and a resistor R64. One end of the transistor Q7 is connected to pin 1 of the operational amplifier IC7B, and both ends of the connection between the transistor Q7 and the operational amplifier IC7B are respectively connected to both ends of the resistor R11. Pin 2 of the operational amplifier IC7B is respectively connected to one end of the capacitor C23 and one end of the resistor R69. The other end of the resistor R69 is respectively connected to one end of the proportional left valve and one end of the resistor R73. The other end of the proportional left valve It is connected to one end of the transistor Q12, the other end of the transistor Q12 is respectively connected to one end of the resistor R12 and one end of the resistor R64, the other end of the resistor R12 and the surface of the transistor Q12 are both connected to +24V, the other end of the resistor R64 is connected to the surface of the transistor Q7, the 3-pin of the operational amplifier IC7B is connected to one end of the capacitor C11, the surface of the proportional left valve is connected to one end of the diode D4, the surface of the operational amplifier IC7B is connected to BL4, the two sides of the proportional left valve are respectively connected to BLL4- and BLL4+, the other end of the capacitor C11, the other end of the capacitor C23, the other end of the resistor R73 and the other end of the diode D7 are all grounded.

[0041] The third regulating proportional valve control module includes a transistor Q8, a resistor R13, a capacitor C24, a capacitor C12, a resistor R70, a resistor R74, a diode D8, a transistor Q13, an operational amplifier IC8A, a proportional left valve, a resistor R14 and a resistor R65. One end of the transistor Q8 is connected to pin 1 of the operational amplifier IC8A, two ends of the connection between the transistor Q8 and the operational amplifier IC8A are respectively connected to two ends of the resistor R13, two ends of the operational amplifier IC8A are respectively connected to one end of the capacitor C24 and one end of the resistor R70, the other end of the resistor R70 is respectively connected to one end of the proportional left valve and one end of the resistor R74, and the other end of the proportional left valve It is connected to one end of the transistor Q13, the other end of the transistor Q13 is respectively connected to one end of the resistor R14 and one end of the resistor R65, the other end of the resistor R14 and the surface of the transistor Q13 are both connected to +24V, the other end of the resistor R65 is connected to the surface of the transistor Q8, the 3-pin of the operational amplifier IC8A is connected to one end of the capacitor C12, the surface of the proportional left valve is connected to one end of the diode D4, the surface of the operational amplifier IC8A is connected to BL5, the two sides of the proportional left valve are respectively connected to BLL5- and BLL5+, the other end of the capacitor C12, the other end of the capacitor C24, the other end of the resistor R74 and the other end of the diode D8 are all grounded.

[0042] The fourth regulating proportional valve control module includes a transistor Q5, a resistor R7, a capacitor C21, a capacitor C9, a resistor R67, a resistor R71, a diode D5, a transistor Q10, an operational amplifier IC6B, a proportional left valve, a resistor R8 and a resistor R62. One end of the transistor Q5 is connected to pin 1 of the operational amplifier IC6B, and both ends of the connection between the transistor Q5 and the operational amplifier IC6B are respectively connected to both ends of the resistor R7. Pin 2 of the operational amplifier IC6B is respectively connected to one end of the capacitor C21 and one end of the resistor R67. The other end of the resistor R67 is respectively connected to one end of the proportional left valve and one end of the resistor R71. The other end of the proportional left valve It is connected to one end of the transistor Q10, the other end of the transistor Q10 is respectively connected to one end of the resistor R8 and one end of the resistor R62, the other end of the resistor R8 and the surface of the transistor Q10 are both connected to +24V, the other end of the resistor R62 is connected to the surface of the transistor Q5, the 3-pin of the operational amplifier IC6B is connected to one end of the capacitor C9, the surface of the proportional left valve is connected to one end of the diode D4, the surface of the operational amplifier IC6B is connected to BL2, the two sides of the proportional left valve are respectively connected to BLL2- and BLL2+, the other end of the capacitor C9, the other end of the capacitor C21, the other end of the resistor R71 and the other end of the diode D5 are all grounded.

[0043] The fifth regulating proportional valve control module includes a transistor Q6, a resistor R9, a capacitor C22, a capacitor C10, a resistor R68, a resistor R72, a diode D6, a transistor Q11, an operational amplifier IC7A, a proportional right valve, a resistor R10 and a resistor R63. One end of the transistor Q6 is connected to the 1 end pin of the operational amplifier IC7A, and the two ends of the connection between the transistor Q6 and the operational amplifier IC7A are respectively connected to the two ends of the resistor R10. The 2 ends of the operational amplifier IC7A are respectively connected to one end of the capacitor C22 and one end of the resistor R68. The other end of the resistor R68 is respectively connected to one end of the proportional right valve and one end of the resistor R72. The other end of the proportional right valve The 3-pin terminal of the operational amplifier IC7A is connected to one end of the capacitor C10, the surface of the proportional right valve is connected to one end of the diode D6, the surface of the operational amplifier IC7A is connected to BL3, the two sides of the proportional right valve are respectively connected to BLR3- and BLR3+, the other end of the capacitor C10, the other end of the capacitor C22, the other end of the resistor R72 and the other end of the diode D6 are all grounded.

[0044] When the embodiment of the present application is in use: the main chip is respectively connected to the control panel, the thermocouple, and the proportional valve to set the combustion time on the control panel, and the main control controls the time. After reaching the preset time, a signal is transmitted to the thermocouple, and the thermocouple controls the proportional valve to close the gas.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combustion time control circuit for a gas stove, comprising a time control circuit, characterized in that: The time control circuit includes a power filter module, a power conversion module, a buzzer module, a main chip, a main valve control module, an adjusting proportional valve control module, a control screen and a thermocouple. The power filter module, the power conversion module, the buzzer module, the main valve control module, the adjusting proportional valve control module, the control screen and the thermocouple are all connected to the main chip. The power filter module includes an electromotive force E1, a capacitor C1, a resistor R3, an electromotive force E2, a capacitor C2, a capacitor C3, an electromotive force E3, a capacitor C4, a capacitor C5 and an electromotive force E4. The power conversion module includes a capacitor CN8, a capacitor C18, a capacitor C19, an integrated circuit IC4, a diode D1, an electromotive force E5, a capacitor C20 and an inductor L1. The buzzer module includes a buzzer FMQ1, a buzzer FMQ2, a transistor Q2, a transistor Q3, an electromotive force E6, a Resistor R2, transistor Q1, resistor R2, resistor R19, resistor R4, resistor R20 and buzzer BUZ1, the main chip includes resistor R22, resistor R21, resistor R54, resistor R55, resistor R23, resistor R24, resistor R25, resistor R26, resistor R27, resistor R59, resistor R58, resistor R56, resistor R57, resistor R28, resistor R29, resistor R30, resistor R31, resistor R32, resistor R33, resistor R34, resistor R60 and integrated circuit IC5, the main valve control module includes a first main valve control module and a second main valve control module, the regulating proportional valve control module includes a first regulating proportional valve control module, a second regulating proportional valve control module, a third regulating proportional valve control module, a fourth regulating proportional valve control module and a fifth regulating proportional valve control module.

2. A combustion time control circuit for a gas stove according to claim 1, characterized in that: One end of the electromotive force E1, one end of the capacitor C1, one end of the resistor R3, one end of the electromotive force E2, one end of the capacitor C2, one end of the capacitor C3, one end of the electromotive force E3, one end of the capacitor C4, one end of the capacitor C5 and one end of the electromotive force E4 are all connected to +5V, and the other end of the electromotive force E1, the other end of the capacitor C1, the other end of the resistor R3, the other end of the electromotive force E2, the other end of the capacitor C2, the other end of the capacitor C3, the other end of the electromotive force E3, the other end of the capacitor C4, the other end of the capacitor C5 and the other end of the electromotive force E4 are all grounded, and the electromotive force E1, capacitor C1, resistor R3, electromotive force E2, capacitor C2, capacitor C3, electromotive force E3, capacitor C4, capacitor C5 and electromotive force E4 are connected in parallel with each other.

3. A combustion time control circuit for a gas stove according to claim 1, characterized in that: Two ends of the capacitor CN8 are respectively connected to one end of the capacitor C18, one end of the capacitor C19 and one end of the integrated circuit IC4, the other end of the integrated circuit IC4 is connected to one end of the inductor L1, the connection between the integrated circuit IC4 and the inductor L1 is connected to one end of the diode D1, the other end of the inductor L1 is respectively connected to one end of the electromotive force E5 and one end of the capacitor C20, one end of the capacitor CN8, the other end of the capacitor C18, the other end of the capacitor C19, the surface of the integrated circuit IC4, the other end of the diode D1, the other end of the electromotive force E5 and the other end of the capacitor C20 are all grounded, and the surface of the capacitor CN8 is connected to an adapter.

4. A combustion time control circuit for a gas stove according to claim 1, characterized in that: The buzzer BUZ1 is connected in parallel with the resistor R20, one end of the resistor 20 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the transistor Q2, the other end of the transistor Q2 is connected to one end of the buzzer FMQ1, the other end of the resistor R20 and one end of R2 are both connected to one end of the transistor Q1, the other end of the transistor Q1 is respectively connected to one end of the resistor R4 and one end of the resistor R19, the other end of the resistor R19 is connected to one end of the transistor Q3, the other end of the transistor Q3 is connected to one end of the buzzer FMQ2, the other end of the resistor R4 and the surface of the transistor Q1 are both connected to +24V, the other end of the resistor R2 is connected to one end of the electromotive force E6, the surface of the transistor Q2, the surface of the transistor Q3 and the other end of the electromotive force E6 are all grounded.

5. A combustion time control circuit for a gas stove according to claim 1, characterized in that: The 5th pin of the integrated power IC5 is connected to one end of the resistor R22, the 6th pin of the integrated power IC5 is connected to one end of the resistor R21, the 7th pin of the integrated power IC5 is connected to one end of the resistor R54, the 8th pin of the integrated power IC5 is connected to one end of the resistor R55, the 9th pin of the integrated power IC5 is connected to one end of the resistor R23, the 10th pin of the integrated power IC5 is connected to one end of the resistor R24, the 11th pin of the integrated power IC5 is connected to one end of the resistor R25, the 12th pin of the integrated power IC5 is connected to one end of the resistor R26, the 13th pin of the integrated power IC5 is connected to one end of the resistor R27, the 14th pin of the integrated power IC5 is connected to one end of the resistor R59, the 28th pin of the integrated power IC5 is connected to one end of the resistor R28. One end of the resistor R58 is connected, the 27th pin of the integrated power IC5 is connected to one end of the resistor R56, the 26th pin of the integrated power IC5 is connected to one end of the resistor R57, the 25th pin of the integrated power IC5 is connected to one end of the resistor R28, the 24th pin of the integrated power IC5 is connected to one end of the resistor R29, the 23rd pin of the integrated power IC5 is connected to one end of the resistor R30, the 22nd pin of the integrated power IC5 is connected to one end of the resistor R31, the 21st pin of the integrated power IC5 is connected to one end of the resistor R32, the 20th pin of the integrated power IC5 is connected to one end of the resistor R33, the 19th pin of the integrated power IC5 is connected to one end of the resistor R34, and the 15th pin of the integrated power IC5 is connected to one end of the resistor R60.

6. A combustion time control circuit for a gas stove according to claim 1, characterized in that: The first main valve control module includes a resistor R18, a diode D25, a main valve 12 and a transistor Q27, one end of the transistor Q27 is respectively connected to one end of the diode D25 and one end of the main valve 12, the other end of the main valve 12 and the other end of the diode D25 are both connected to +24V, the other end of the transistor Q27 is connected to one end of the resistor R18, the connection between the transistor Q27 and the resistor R18 is connected to ZF2, the connection between the transistor Q27 and the diode D25 is connected to ZF-OUT2, the other end of the resistor R18 and the surface of the transistor Q27 are both grounded.

7. A combustion time control circuit for a gas stove according to claim 1, characterized in that: The second main valve control module includes a resistor R16, a diode D24, a main valve 11 and a transistor Q26, one end of the transistor Q26 is respectively connected to one end of the diode D24 and one end of the main valve 11, the other end of the main valve 11 and the other end of the diode D24 are both connected to +24V, the other end of the transistor Q26 is connected to one end of the resistor R16, the connection between the transistor Q26 and the resistor R16 is connected to ZF1, the connection between the transistor Q26 and the diode D24 is connected to ZF-OUT1, the other end of the resistor R16 and the surface of the transistor Q26 are both grounded.

8. A combustion time control circuit for a gas stove according to claim 1, characterized in that: The first regulating proportional valve control module includes a transistor Q4, a resistor R5, a capacitor C25, a capacitor C15, a resistor R66, a resistor R75, a diode D4, a transistor Q9, an operational amplifier IC6A, a proportional right valve, a resistor R6 and a resistor R61. One end of the transistor Q4 is connected to pin 1 of the operational amplifier IC6A, and both ends of the connection between the transistor Q4 and the operational amplifier IC6A are respectively connected to both ends of the resistor R5. Pin 2 of the operational amplifier IC6A is respectively connected to one end of the capacitor C25 and one end of the resistor R66. The other end of the resistor R66 is respectively connected to one end of the proportional right valve and one end of the resistor R75. The other end of the proportional right valve is connected to the transistor Q4. One end of the transistor Q9 is connected, the other end of the transistor Q9 is respectively connected to one end of the resistor R6 and one end of the resistor R61, the other end of the resistor R6 and the surface of the transistor Q9 are both connected to +24V, the other end of the resistor R61 is connected to the surface of the transistor Q4, the 3-pin of the operational amplifier IC6A is connected to one end of the capacitor C15, the surface of the proportional right valve is connected to one end of the diode D4, the surface of the operational amplifier IC6A is connected to BL1, the two sides of the proportional right valve are respectively connected to BLR1- and BLR1+, the other end of the capacitor C15, the other end of the capacitor C25, the other end of the resistor R75 and the other end of the diode D4 are all grounded.

9. A combustion time control circuit for a gas stove according to claim 1, characterized in that: The second regulating proportional valve control module includes a transistor Q7, a resistor R11, a capacitor C23, a capacitor C11, a resistor R69, a resistor R73, a diode D7, a transistor Q12, an operational amplifier IC7B, a proportional left valve, a resistor R12 and a resistor R64. One end of the transistor Q7 is connected to one end pin of the operational amplifier IC7B, and the two ends of the connection between the transistor Q7 and the operational amplifier IC7B are respectively connected to the two ends of the resistor R11. The two ends of the operational amplifier IC7B are respectively connected to one end of the capacitor C23 and one end of the resistor R69. The other end of the resistor R69 is respectively connected to one end of the proportional left valve and one end of the resistor R73. The other end of the proportional left valve is connected to the transistor Q7. The transistor Q12 is connected to one end of the proportional left valve, the other end of the transistor Q12 is respectively connected to one end of the resistor R12 and one end of the resistor R64, the other end of the resistor R12 and the surface of the transistor Q12 are both connected to +24V, the other end of the resistor R64 is connected to the surface of the transistor Q7, the 3-pin of the operational amplifier IC7B is connected to one end of the capacitor C11, the surface of the proportional left valve is connected to one end of the diode D4, the surface of the operational amplifier IC7B is connected to BL4, the two sides of the proportional left valve are respectively connected to BLL4- and BLL4+, the other end of the capacitor C11, the other end of the capacitor C23, the other end of the resistor R73 and the other end of the diode D7 are all grounded.

10. A combustion time control circuit for a gas stove according to claim 1, characterized in that: The third regulating proportional valve control module includes a transistor Q8, a resistor R13, a capacitor C24, a capacitor C12, a resistor R70, a resistor R74, a diode D8, a transistor Q13, an operational amplifier IC8A, a proportional left valve, a resistor R14 and a resistor R65. One end of the transistor Q8 is connected to one end pin of the operational amplifier IC8A, and the two ends of the connection between the transistor Q8 and the operational amplifier IC8A are respectively connected to the two ends of the resistor R13. The two ends of the operational amplifier IC8A are respectively connected to one end of the capacitor C24 and one end of the resistor R70. The other end of the resistor R70 is respectively connected to one end of the proportional left valve and one end of the resistor R74. The other end of the proportional left valve is connected to the transistor Q8. The transistor Q13 is connected to one end of the proportional left valve, the other end of the transistor Q13 is respectively connected to one end of the resistor R14 and one end of the resistor R65, the other end of the resistor R14 and the surface of the transistor Q13 are both connected to +24V, the other end of the resistor R65 is connected to the surface of the transistor Q8, the 3-pin of the operational amplifier IC8A is connected to one end of the capacitor C12, the surface of the proportional left valve is connected to one end of the diode D4, the surface of the operational amplifier IC8A is connected to BL5, the two sides of the proportional left valve are respectively connected to BLL5- and BLL5+, the other end of the capacitor C12, the other end of the capacitor C24, the other end of the resistor R74 and the other end of the diode D8 are all grounded.

11. A combustion time control circuit for a gas stove according to claim 1, characterized in that: The fourth regulating proportional valve control module includes a transistor Q5, a resistor R7, a capacitor C21, a capacitor C9, a resistor R67, a resistor R71, a diode D5, a transistor Q10, an operational amplifier IC6B, a proportional left valve, a resistor R8 and a resistor R62. One end of the transistor Q5 is connected to pin 1 of the operational amplifier IC6B, and both ends of the connection between the transistor Q5 and the operational amplifier IC6B are respectively connected to both ends of the resistor R7. Pin 2 of the operational amplifier IC6B is respectively connected to one end of the capacitor C21 and one end of the resistor R67. The other end of the resistor R67 is respectively connected to one end of the proportional left valve and one end of the resistor R71. The other end of the proportional left valve is connected to the transistor Q5. The surface of the transistor Q10 is connected to one end of the transistor Q10, the other end of the transistor Q10 is respectively connected to one end of the resistor R8 and one end of the resistor R62, the other end of the resistor R8 and the surface of the transistor Q10 are both connected to +24V, the other end of the resistor R62 is connected to the surface of the transistor Q5, the 3-pin of the operational amplifier IC6B is connected to one end of the capacitor C9, the surface of the proportional left valve is connected to one end of the diode D4, the surface of the operational amplifier IC6B is connected to BL2, the two sides of the proportional left valve are respectively connected to BLL2- and BLL2+, the other end of the capacitor C9, the other end of the capacitor C21, the other end of the resistor R71 and the other end of the diode D5 are all grounded.

12. A combustion time control circuit for a gas stove according to claim 1, characterized in that: The fifth regulating proportional valve control module includes a transistor Q6, a resistor R9, a capacitor C22, a capacitor C10, a resistor R68, a resistor R72, a diode D6, a transistor Q11, an operational amplifier IC7A, a proportional right valve, a resistor R10 and a resistor R63. One end of the transistor Q6 is connected to pin 1 of the operational amplifier IC7A, and both ends of the connection between the transistor Q6 and the operational amplifier IC7A are respectively connected to both ends of the resistor R10. Pin 2 of the operational amplifier IC7A is respectively connected to one end of the capacitor C22 and one end of the resistor R68. The other end of the resistor R68 is respectively connected to one end of the proportional right valve and one end of the resistor R72. The other end of the proportional right valve is connected to the transistor Q6. The surface of the transistor Q11 is connected to one end of the transistor Q11, the other end of the transistor Q11 is respectively connected to one end of the resistor R10 and one end of the resistor R63, the other end of the resistor R6 and the surface of the transistor Q11 are both connected to +24V, the other end of the resistor R63 is connected to the surface of the transistor Q6, the 3-pin of the operational amplifier IC7A is connected to one end of the capacitor C10, the surface of the proportional right valve is connected to one end of the diode D6, the surface of the operational amplifier IC7A is connected to BL3, the two sides of the proportional right valve are respectively connected to BLR3- and BLR3+, the other end of the capacitor C10, the other end of the capacitor C22, the other end of the resistor R72 and the other end of the diode D6 are all grounded.

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