Multi-burner ignition control system and method

Abstract

The present invention relates to a multi-burner ignition control system, comprising: multiple groups of ignition units, the ignition units send out switch signals; a control unit, the input end of the control unit is connected to the ignition unit, receives the switch signal from the ignition unit, and outputs a trigger signal and a power supply signal according to the ignition unit and the corresponding switch signal; multiple ignition modules, the ignition modules are connected to the burner ignition pins, receive the trigger signal from the control unit, and realize the burner ignition; and a power supply module is connected to the control unit and the ignition module to supply power to the control unit and the ignition module. The present application also provides a multi-burner ignition control method. The present application discloses an ignition control system for controlling multiple burners, in which the same control unit controls multiple ignition units and corresponding ignition modules, so that when the multi-burner product is ignited, the consistency of the ignition frequency is achieved, so that the ignition process and ignition reaction of each burner are consistent.

Description

Technical Field

[0001] The invention relates to the technical field of gas stove ignition, and in particular to a multi-burner ignition control system and method. Background Art

[0002] The working process of the pulse igniter is: press the knob to connect the pulse switch linked to the knob. After the high-voltage element is energized, a high-voltage discharge is generated, which is transmitted to the ignition needle by the high-voltage line, resulting in continuous discharge ignition. As the knob turns, the main burner nozzle opens, and the gas flows out of the fire hole and is ignited. When the knob is pressed, sometimes there will be a "pop, pop, pop" ignition sound with a slow rhythm, but sometimes it will be a very fast rhythm of "pop pop pop pop pop..." This is caused by the inconsistency of the ignition frequency. The existing stove ignition control is often for a single stove, using a pure analog circuit. Since the various devices in the pure analog circuit are not absolutely consistent, it is difficult for independent identical circuit modules to be consistent in ignition frequency. The ignition frequency of mass-produced products cannot be consistent. If the independent ignition modules in the same product are ignited at the same time, the ignition discharge cannot be consistent, resulting in the use problems mentioned above, resulting in a decline in user experience. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that the use of a pure analog circuit for a single stove easily causes inconsistent ignition frequency and poor user experience. The present invention provides a multi-stove ignition control system and method.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions: a multi-burner ignition control system, comprising: multiple groups of ignition units, the ignition units send out switch signals; a control unit, the input end of the control unit is connected to the ignition unit, receives the switch signal from the ignition unit, and outputs a trigger signal and a power supply signal according to the ignition unit and the corresponding switch signal; multiple ignition modules, the ignition modules are connected to the burner ignition pins, receive the trigger signal from the control unit, and realize the burner ignition; and a power supply module, connected to the control unit and the ignition module, to supply power to the control unit and the ignition module; the power supply signal controls the power supply module to supply power to the ignition module, and the trigger signal controls the ignition start of the ignition module; each group of ignition units corresponds to an ignition module.

[0005] Furthermore, each ignition unit includes: a stove switch for issuing a switch signal; and a signal processing circuit, wherein the input end of the signal processing circuit is connected to the stove switch, receives the switch signal from the stove switch, and converts the switch signal into an electrical signal recognizable by the control unit, and the output end is connected to the control unit to transmit the electrical signal to the control unit.

[0006] Furthermore, the signal processing circuit includes a resistor R34, a capacitor C11 and a capacitor C22, the first end of the resistor R34 and the first end of the capacitor C11 are connected to the switching signal, the second end of the resistor R34 is connected to the first end of the capacitor C22 and the input end of the control unit, and the second end of the capacitor C11 and the second end of the capacitor C22 are both grounded.

[0007] Further, the signal processing circuit includes a capacitor C17, a resistor R43, a resistor R44, a transistor Q6, a resistor R36 and a capacitor C15, the first end of the resistor R43 and the first end of the capacitor C17 are connected to the switching signal, the second end of the resistor R43 is connected to the first end of the resistor R44 and the base of the transistor Q6, the emitter of the transistor Q6 is connected to the second end of the resistor R44 and the second end of the capacitor C17 and is grounded, the collector of the transistor Q6 is connected to the first end of the resistor R36, the first end of the capacitor C15 and the input end of the control unit, and the second end of the resistor R36 is connected to the power supply.

[0008] Furthermore, each ignition module includes: a power supply controlled circuit, including a controlled end, a power supply end and an output end, the controlled end is connected to the power supply signal output end of the control unit, the power supply end is connected to the power supply module, and the output end is connected to the ignition circuit; and an ignition circuit, used to trigger ignition, including an ignition signal receiving end and an ignition triggering end, the ignition signal receiving end is connected to the trigger signal output end of the control unit, and the ignition triggering end is connected to the stove ignition pin.

[0009] Furthermore, the power supply controlled circuit includes: a diode D0 and a self-excited oscillation circuit, the anode of the diode D0 is connected to the power supply signal output end of the control unit, the anode of the diode D0 is connected to the input end of the self-excited oscillation circuit, the power supply end of the self-excited oscillation circuit is connected to the power supply module, and the output end of the self-excited oscillation circuit is connected to the ignition circuit.

[0010] Furthermore, the ignition circuit includes: a diode D1, a thyristor D2, a diode D3, a resistor R1, a capacitor C1 and a transformer T2; the output end of the self-excited oscillation circuit is connected to the anode of the diode D1, the cathode of the diode D1 is connected to the first end of the resistor R1, the first end of the capacitor C1, and the anode of the thyristor D2, the control electrode of the thyristor D2 is connected to the trigger signal output end of the control unit through an energy storage element, the cathode of the thyristor D2 is connected to the second end of the resistor R1, the first terminal of the primary winding of the transformer T2, and the power supply module, the second end of the capacitor C1 is connected to the second terminal of the primary winding of the transformer T2, and the output end of the secondary winding of the transformer T2 is connected to the ignition pin of the stove.

[0011] The present application also provides a multi-burner ignition control method, which is applicable to the multi-burner ignition control system, comprising:

[0012] S10, detecting a switch signal from the ignition unit;

[0013] S20, the control unit determines whether the switch signal is valid, if not, then goes to S10;

[0014] S30, the control unit identifies the ignition module corresponding to the switch signal, and generates a corresponding power supply signal and a trigger signal according to the switch signal;

[0015] S40, the power supply module supplies power to the ignition module according to the power supply signal;

[0016] S50, the ignition module starts ignition according to the trigger signal to ignite the stove.

[0017] Furthermore, each ignition unit includes: a stove switch for issuing a switch signal; and a signal processing circuit, wherein the input end of the signal processing circuit is connected to the stove switch, receives the switch signal from the stove switch, and converts the switch signal into an electrical signal recognizable by the control unit, and the output end is connected to the control unit to transmit the electrical signal to the control unit.

[0018] Furthermore, the ignition module includes: a power supply controlled circuit, including a controlled end, a power supply end and an output end, the controlled end is connected to the power supply signal output end of the control unit, the power supply end is connected to the power supply module, and the output end is connected to the ignition circuit; and an ignition circuit, used to trigger ignition, including an ignition signal receiving end and an ignition triggering end, the ignition signal receiving end is connected to the trigger signal output end of the control unit, and the ignition triggering end is connected to the stove ignition pin.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: Compared with the prior art, which only controls the on and off of a single stove switch, the difference in ignition reaction caused by the inconsistency of ignition frequency during the switching process of multiple stoves has not attracted enough attention. The present application establishes an ignition control system for controlling multiple stoves, and the same control unit controls multiple ignition units and corresponding ignition modules to achieve the consistency of ignition frequency when the multi-stove products are ignited, so that the ignition process and ignition reaction of each stove are consistent. The thyristor is used as the trigger element of the ignition module to realize the external control of the trigger signal, so as to realize the switching of the trigger circuit between the on and off states, and realize the controllable ignition frequency on a macro scale. The controllability of the ignition frequency also leads to the ignition frequency of multiple stoves being consistent, and simultaneous discharge can be achieved. When the user end is in use, the ignition sound of some stoves will no longer be "pop, pop, pop", and the ignition sound of some stoves will be "pop pop pop pop pop, ... The use of a control unit (such as a single-chip microcomputer) improves the scalability and intelligence level of the entire product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a multi-burner ignition control system;

[0021] Figure 2 yes Figure 1 Circuit diagram of the signal detection circuit;

[0022] Figure 3 yes Figure 1 Circuit diagram of the signal processing circuit;

[0023] Figure 4 This is the circuit diagram of the ignition module. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings:

[0025] A multi-burner ignition control system, such as Figure 1 As shown, it includes n groups of ignition units, a control unit, a power supply module and n ignition modules. The ignition unit is connected to the input end of the control unit, and the output end of the control unit is connected to the ignition module. Each group of ignition units corresponds to an ignition module. The power supply module is connected to the control unit (i.e., the MCU in the figure) to supply power to the control unit; the power supply module is also connected to the ignition module to supply power to the ignition module. The power supply module provides the rated operating voltage and current for the control unit and the ignition model. The control unit is the logic processing and control center of the entire system. A single-chip microcomputer can be selected as the control unit, which is connected to the ignition unit and the ignition module. The power supply signal ( Figure 1 A) The control power supply module supplies power to the ignition module, and the control unit outputs the trigger signal ( Figure 1 B) Controls the ignition start of the ignition module. The process of the control unit generating the power supply signal and the trigger signal can be realized by hardware circuit or by software programming.

[0026] Each ignition unit includes a stove switch and a signal processing circuit. The stove switch is used to send a switch signal. When someone presses the stove switch, it means that the switch signal is sent. The input end of the signal processing circuit is connected to the stove switch, receives the switch signal from the stove switch, and converts the switch signal into an electrical signal recognizable by the control unit. The output end is connected to the control unit to transmit the electrical signal to the control unit. Specifically, for a control unit with an AD conversion function, such as Figure 2 As shown, the signal processing circuit includes a resistor R34, a capacitor C11 and a capacitor C22, the first end of the resistor R34 and the first end of the capacitor C11 are connected to the switch signal, the second end of the resistor R34 is connected to the first end of the capacitor C22 and the input end of the control unit, and the second end of the capacitor C11 and the second end of the capacitor C22 are both grounded. The capacitor C11 and the capacitor C22 play a filtering role.

[0027] Specifically, for a control unit that does not have an AD conversion function, such as Figure 3 As shown, the signal processing circuit converts the switch signal into a TTL signal recognizable by the control unit, including capacitor C17, resistor R43, resistor R44, transistor Q6, resistor R36 and capacitor C15, the first end of resistor R43 and the first end of capacitor C17 are connected to the switch signal, the second end of resistor R43 is connected to the first end of resistor R44 and the base of transistor Q6, the emitter of transistor Q6 is connected to the second end of resistor R44 and the second end of capacitor C17 and grounded, the collector of transistor Q6 is connected to the first end of resistor R36, the first end of capacitor C15 and the input end of the control unit, and the second end of resistor R36 is connected to the power supply. Capacitors C17 and C15 play a filtering role.

[0028] Each ignition module includes an ignition circuit 30 and a power supply controlled circuit 20. The ignition circuit 30 is used to ignite the stove head and is directly connected to the ignition pin on the stove head. The power supply controlled circuit 20 includes a controlled end, a power supply end, and an output end. The controlled end is connected to the power supply signal output end of the control unit, the output end is connected to the ignition circuit 30 and the trigger circuit, and the power supply end is connected to the power supply module. Specifically, Figure 4 As shown, the power supply controlled circuit 20 includes: a diode D0 and a self-excited oscillation circuit 21, the anode of the diode D0 is connected to the power supply signal output end of the control unit, the anode of the diode D0 is connected to the input end of the self-excited oscillation circuit 21, the power supply end of the self-excited oscillation circuit 21 is connected to the power supply module, and the output end of the self-excited oscillation circuit 21 is connected to the ignition circuit 30. The ignition circuit 30 includes: a diode D1, a thyristor D2, a diode D3, a resistor R1, a capacitor C1 and a transformer T2; the output end of the self-excited oscillation circuit 21 is connected to the anode of the diode D1, the cathode of the diode D1 is connected to the first end of the resistor R1, the first end of the capacitor C1, and the anode of the thyristor D2, the control electrode of the thyristor D2 is connected to the trigger signal output end of the control unit through the energy storage element, the cathode of the thyristor D2 is connected to the second end of the resistor R1, the first terminal of the primary winding of the transformer T2, and the power supply module, the second end of the capacitor C1 is connected to the second terminal of the primary winding of the transformer T2, and the output end of the secondary winding of the transformer T2 is connected to the ignition pin of the stove. Capacitor C1 is used to store discharge energy, and resistor R1 is set to discharge the capacitor power when the ignition is not on for safety reasons.

[0029] A method for realizing multi-burner control by a multi-burner ignition control system comprises the following steps:

[0030] S10, detecting the switch signal from the ignition unit; pressing the stove button is equivalent to sending a switch signal.

[0031] The ignition unit includes: a stove switch and a signal processing circuit. The input end of the signal processing circuit is connected to the stove switch, receives the switch signal from the stove switch, and converts the switch signal into an electrical signal recognizable by the control unit. The output end is connected to the control unit to transmit the electrical signal to the control unit.

[0032] S20, the control unit determines whether the switch signal is valid, if not, it goes to S10; the control unit determines whether the switch signal is valid, and the switch signal is converted into an electrical signal recognizable by the control unit through the signal processing circuit. The control unit can determine whether the switch signal is valid based on the level of the received electrical signal.

[0033] S30, the control unit identifies the ignition module corresponding to the switch signal, and generates a corresponding power supply signal and trigger signal according to the switch signal;

[0034] The control unit generates a corresponding power supply signal and a trigger signal according to the switch signal, which can be realized through a hardware circuit or through software programming.

[0035] S40, the power supply module supplies power to the ignition module according to the power supply signal;

[0036] The power supply module is connected to the ignition module, and the power supply signal is equivalent to a normally open switch. When the control unit sends a power supply signal, the switch is closed, and the power supply module supplies power to the ignition module. The ignition module includes: a power supply controlled circuit, including a controlled end, a power supply end, and an output end. The controlled end is connected to the power supply signal output end of the control unit, the power supply end is connected to the power supply module, and the output end is connected to the ignition circuit; and an ignition circuit, which is used to trigger ignition, including an ignition signal receiving end and an ignition triggering end. The ignition signal receiving end is connected to the trigger signal output end of the control unit, and the ignition triggering end is connected to the ignition pin of the stove.

[0037] S50, the ignition module starts ignition according to the trigger signal to ignite the stove;

[0038] When the power supply module supplies power to the ignition module, the ignition module starts the ignition circuit 30 after receiving the trigger signal, and the ignition circuit 30 is directly connected to the ignition pin on the stove head to realize the ignition of the stove head.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A multi-burner ignition control system, characterized in that: It includes multiple groups of ignition units, and the ignition units send out switch signals; A control unit, wherein an input end of the control unit is connected to the ignition unit, receives a switch signal from the ignition unit, and outputs a trigger signal and a power supply signal according to the ignition unit and the corresponding switch signal; A plurality of ignition modules, wherein the ignition modules are connected to the ignition pins of the stove heads and receive trigger signals from the control unit to ignite the stove heads; and a power supply module, connected to the control unit and the ignition module, to supply power to the control unit and the ignition module; The power supply signal controls the power supply module to supply power to the ignition module, and the trigger signal controls the ignition start of the ignition module; Each group of ignition units corresponds to an ignition module; Each of the ignition modules comprises: a power supply controlled circuit, comprising a controlled end, a power supply end and an output end, wherein the controlled end is connected to the power supply signal output end of the control unit, the power supply end is connected to the power supply module, and the output end is connected to the ignition circuit; and an ignition circuit, used for triggering ignition, comprising an ignition signal receiving end and an ignition triggering end, wherein the ignition signal receiving end is connected to the trigger signal output end of the control unit, and the ignition triggering end is connected to the ignition pin of the stove head; The power supply controlled circuit comprises: a diode D0 and a self-excited oscillation circuit, wherein the anode of the diode D0 is connected to the power supply signal output terminal of the control unit, the anode of the diode D0 is connected to the input terminal of the self-excited oscillation circuit, the power supply terminal of the self-excited oscillation circuit is connected to the power supply module, and the output terminal of the self-excited oscillation circuit is connected to the ignition circuit; The ignition circuit comprises: Diode D1, thyristor D2, diode D3, resistor R1, capacitor C1 and transformer T2; the output end of the self-excited oscillation circuit is connected to the anode of diode D1, the cathode of diode D1 is connected to the first end of resistor R1, the first end of capacitor C1 and the anode of thyristor D2, the control electrode of thyristor D2 is connected to the trigger signal output end of the control unit through the energy storage element, the cathode of thyristor D2 is connected to the second end of resistor R1, the first terminal of the primary winding of transformer T2 and the power supply module, the second end of capacitor C1 is connected to the second terminal of the primary winding of transformer T2, and the output end of the secondary winding of transformer T2 is connected to the ignition pin of the stove; Each group of ignition units comprises: The stove switch is used to send out a switch signal; and a signal processing circuit, wherein an input end of the signal processing circuit is connected to the stove switch, receives a switch signal from the stove switch, and converts the switch signal into an electrical signal recognizable by a control unit, and an output end is connected to the control unit, and transmits the electrical signal to the control unit; The signal processing circuit includes a resistor R34, a capacitor C11 and a capacitor C22, the first end of the resistor R34 and the first end of the capacitor C11 are connected to the switch signal, the second end of the resistor R34 is connected to the first end of the capacitor C22 and the input end of the control unit, and the second end of the capacitor C11 and the second end of the capacitor C22 are both grounded; The signal processing circuit further includes a capacitor C17, a resistor R43, a resistor R44, a transistor Q6, a resistor R36 and a capacitor C15. The first end of the resistor R43 and the first end of the capacitor C17 are connected to the switch signal. The second end of the resistor R43 is connected to the first end of the resistor R44 and the base of the transistor Q6. The emitter of transistor Q6 is connected to the second end of resistor R44 and the second end of capacitor C17 and grounded, the collector of transistor Q6 is connected to the first end of resistor R36, the first end of capacitor C15 and the input end of the control unit, and the second end of resistor R36 is connected to the power supply; The control method of the multi-burner ignition control system comprises the following steps: S10, detecting a switch signal from the ignition unit; S20, the control unit determines whether the switch signal is valid, if not, then goes to S10; S30, the control unit identifies the ignition module corresponding to the switch signal, and generates a corresponding power supply signal and a trigger signal according to the switch signal; S40, the power supply module supplies power to the ignition module according to the power supply signal; S50, the ignition module starts ignition according to the trigger signal to ignite the stove.

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