Gas solenoid valve control circuit and gas solenoid valve closing method for a multi-burner hob

Abstract

The application discloses a gas solenoid valve control circuit and a gas solenoid valve closing method of a multi-burner stove. The circuit comprises a plurality of valve closing control circuits, a power supply, a power supply bus and a stove controller. Each valve closing control circuit comprises a gas solenoid valve and a switch controller. The plurality of valve closing control circuits are connected in parallel to form a parallel circuit. The power supply is used to supply power to each valve closing control circuit in the parallel circuit. The stove controller is connected to the input interface of the switch controller. The output interface of the switch controller is connected to the corresponding gas solenoid valve. The power supply interface of the switch controller is connected to the power supply bus. The technical scheme provided by the application can improve the valve closing efficiency of the gas solenoid valve, has simple layout, occupies less resources, and improves the stability and reliability of the electric control circuit.

Description

Technical Field

[0001] This application relates to the field of smart home appliance technology, and in particular to a gas solenoid valve control circuit and a gas solenoid valve closing method for a multi-burner stove. Background Technology

[0002] Most household gas stoves on the market today do not have smart functions. Users must monitor and turn off the stove in real time. Household gas stoves generally have two or more burners, and each burner requires a controller. The number of controllers is as many as the number of burners. This makes the controller structure complex and costly, resulting in problems such as low valve shut-off efficiency, poor reliability of electrical control circuits, and poor user experience. Summary of the Invention

[0003] This disclosure provides a gas solenoid valve control circuit and a gas solenoid valve closing method for a multi-burner stove, aiming to at least solve the technical problems of low flame-off efficiency, poor reliability of electrical control circuits, and poor user experience in related technologies. The technical solution of this disclosure is as follows:

[0004] According to a first aspect of the present disclosure, a gas solenoid valve control circuit for a multi-burner stove is provided, comprising: multiple valve-closing control circuits (1), a power supply (2), a power bus (3), and a stove controller (4), each valve-closing control circuit (1) comprising: a gas solenoid valve (5) and a switch controller (6), wherein:

[0005] Multiple valve-closing control circuits (1) are connected in parallel to form a parallel circuit. The power supply (2) is used to supply power to each valve-closing control circuit (1) in the parallel circuit. The stove controller (4) is connected to the input interface of the switch controller (6). The output interface of the switch controller (6) is connected to the corresponding gas solenoid valve (5). The power interface of the switch controller (6) is connected to the power bus (3).

[0006] In an optional embodiment, the switch controller (6) is a transistor (7), the power interface of the switch controller (6) is the collector of the transistor (7), the output interface of the switch controller (6) is the emitter of the transistor (7), and the input interface of the switch controller (6) is the base of the transistor (7), wherein:

[0007] The emitter of the transistor (7) is connected to the corresponding gas solenoid valve (5), the base of the transistor (7) is connected to the stove controller (4), and the collector of the transistor (7) is connected to the power supply (2) through the power bus (3).

[0008] In an optional embodiment, each of the valve-closing control circuits (1) further includes a resistor (8), wherein:

[0009] One end of the resistor (8) is connected to the input interface of the corresponding switch controller (6), and the other end of the resistor (8) is connected to the stove controller (4).

[0010] In an optional embodiment, the gas solenoid valve control circuit further includes: a diode (9), and the power supply (2) is a capacitor (10), wherein:

[0011] The diode (9) is used to transmit external power to the capacitor (10) to charge the capacitor (10).

[0012] This application also provides a method for closing the gas solenoid valve of a multi-burner stove, wherein the gas solenoid valve is closed through the gas solenoid valve control circuit of the multi-burner stove, and the method includes:

[0013] In response to the first valve-closing control signal corresponding to the first gas solenoid valve in a multi-burner stove, the power interface of the first switch controller in the first valve-closing control circuit corresponding to the first gas solenoid valve and the output interface of the first switch controller are connected to control the power supply to the first gas solenoid valve so that the first gas solenoid valve closes.

[0014] In an optional embodiment, the connection between the power interface of the first switch controller and the output interface of the first switch controller in the first valve-closing control circuit corresponding to the first gas solenoid valve in the multi-burner stove, in response to the first valve-closing control signal of the first gas solenoid valve, includes:

[0015] Receive valve-closing control information set by the target object, wherein the valve-closing control information includes the first valve-closing time corresponding to the first gas solenoid valve;

[0016] The first valve closing time is counted down;

[0017] If the countdown ends, the first valve closing control signal is triggered;

[0018] In response to the first valve closing control signal, the power interface of the first switch controller and the output interface of the first switch controller are connected.

[0019] In an optional embodiment, the method further includes:

[0020] After closing the first gas solenoid valve, the power supply is charged.

[0021] In an optional embodiment, the valve shut-off control information further includes a second valve shut-off time corresponding to the second gas solenoid valve in the multi-burner stove, wherein the second valve shut-off time is later than the first valve shut-off time. If the time difference between the first valve shut-off time and the second valve shut-off time is less than a preset duration, the method further includes:

[0022] After closing the first gas solenoid valve, a countdown is performed for the preset duration;

[0023] When the countdown ends, in response to the second valve-closing control signal of the second gas solenoid valve, the power interface of the second switch controller in the second valve-closing control circuit corresponding to the second gas solenoid valve and the output interface of the second switch controller are connected, and the preset duration is the duration of a single charge of the power supply.

[0024] In an optional embodiment, if the time difference is greater than or equal to the preset duration, the method further includes:

[0025] After closing the first gas solenoid valve, the time difference is counted down.

[0026] When the countdown ends, it responds to the second valve closing control signal.

[0027] In an optional embodiment, triggering the first valve-closing control signal upon the end of the countdown includes:

[0028] If the countdown ends, output the fire shut-off command;

[0029] Based on the shut-off command, the first valve shut-off control signal is triggered.

[0030] The technical solutions provided by the embodiments of this disclosure bring at least the following beneficial effects: the gas solenoid valve control circuit of the multi-burner stove provided by the embodiments of this application closes the gas solenoid valve. By connecting multiple valve-closing control circuits in parallel, independent control of each gas solenoid valve is achieved. Power is supplied to each valve-closing control circuit in the parallel circuit, realizing line sharing, reducing circuit components, reducing circuit structure complexity and cost, and improving valve-closing efficiency and reliability of electrical control circuit.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the structure of a gas solenoid valve control circuit for a multi-burner stove provided in this application embodiment;

[0034] Figure 2 A schematic flowchart illustrating a method for closing a gas solenoid valve, provided in an embodiment of this application;

[0035] Figure 3 A schematic diagram illustrating the process of connecting the power interface of the first switch controller and the output interface of the first switch controller according to an embodiment of this application;

[0036] Figure 4 This is a flowchart illustrating another method for closing a gas solenoid valve when the time difference between the first valve closing time and the second valve closing time is less than a preset duration, as provided in an embodiment of this application. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0039] The following first introduces an embodiment of a gas solenoid valve control circuit for a multi-burner stove according to this application. (See attached diagram.) Figure 1 The gas solenoid valve control circuit includes: multiple valve-closing control circuits (1), a power supply (2), a power bus (3), and a stove controller (4). Each valve-closing control circuit (1) includes: a gas solenoid valve (5) and a switch controller (6). The functions of each component in the device and their interconnections are described in detail below to better understand this application.

[0040] Multiple valve-closing control circuits (1) are connected in parallel to form a parallel circuit. A power supply (2) supplies power to each valve-closing control circuit (1) in the parallel circuit. The stove controller (4) is connected to the input interface of the switch controller (6). The output interface of the switch controller (6) is connected to the corresponding gas solenoid valve (5). The power interface of the switch controller (6) is connected to the power bus (3). Specifically, the grounding terminal of each gas solenoid valve body (5) is directly connected to a common ground wire.

[0041] Furthermore, the switch controller (6) is a transistor (7), the power interface of the switch controller (6) is the collector of the transistor (7), the output interface of the switch controller (6) is the emitter of the transistor (7), and the input interface of the switch controller (6) is the base of the transistor (7), wherein:

[0042] The emitter of the transistor (7) is connected to the corresponding gas solenoid valve (5), the base of the transistor (7) is connected to the stove controller (4), and the collector of the transistor (7) is connected to the power supply (2) through the power bus (3).

[0043] More specifically, each valve control circuit (1) also includes a resistor (8), wherein one end of the resistor (8) is connected to the input interface of the corresponding switch controller (6), that is, one end of the resistor (8) is connected to the base of the corresponding transistor (7), and the other end of the resistor (8) is connected to the stove controller (4). The resistor is used to limit the current flowing through the base of the transistor and protect the transistor from damage.

[0044] In addition, the above-mentioned gas solenoid valve control circuit also includes: a diode (9), and the power supply (2) is a capacitor (10), wherein:

[0045] The diode (9) is used to transfer external power to the capacitor (10) to charge the capacitor (10). Specifically, the positive terminal of the capacitor (10) is connected to the power bus (2), and the negative terminal of the capacitor (10) is grounded.

[0046] In addition, the above-mentioned gas solenoid valve control circuit also includes: a display page (11), which is connected to the stove controller (4). The display page (11) displays function buttons (12), which are used to receive the gas solenoid valve closing control information set by the target user.

[0047] As can be seen from the above, the gas solenoid valve control circuit of the multi-burner stove provided in this application closes the gas solenoid valve by connecting multiple valve-closing control circuits in parallel, thereby achieving independent control of each gas solenoid valve. The current for closing each gas solenoid valve comes from the energy stored in the capacitor on the power bus, which reduces the number of circuit components, lowers the complexity and cost of the circuit structure, and improves valve-closing efficiency and the reliability of the electrical control circuit.

[0048] The following is combined with Figures 2 to 4 A method for closing a gas solenoid valve is described.

[0049] like Figure 2 As shown, Figure 2 This is a flowchart illustrating a method for closing a gas solenoid valve according to an exemplary embodiment, the method including the following steps:

[0050] Step S201: In response to the first valve-closing control signal corresponding to the first gas solenoid valve in the multi-burner stove, connect the power interface of the first switch controller and the output interface of the first switch controller in the first valve-closing control circuit corresponding to the first gas solenoid valve, and control the power supply to supply power to the first gas solenoid valve so that the first gas solenoid valve closes.

[0051] In one specific embodiment, the above method further includes:

[0052] After closing the first gas solenoid valve, charge the power supply.

[0053] For example, the power source is a capacitor. Accordingly, charging the power source after closing the first gas solenoid valve may include: after closing the first gas solenoid valve, transmitting external power to the capacitor through a diode to charge the capacitor.

[0054] In the above embodiments, charging the power supply after closing the first gas solenoid valve helps ensure sufficient power and avoids subsequent valve closing operation failure due to insufficient power, thereby improving the reliability and stability of the valve closing operation.

[0055] In a specific embodiment, such as Figure 3 As shown, the first valve-closing control signal corresponding to the first gas solenoid valve in the multi-burner stove, connecting the power interface and the output interface of the first switch controller in the first valve-closing control circuit corresponding to the first gas solenoid valve, includes:

[0056] Step S301: Receive valve closing control information set by the target object.

[0057] In one specific embodiment, the valve closing control information includes a first valve closing time corresponding to the first gas solenoid valve. In another specific embodiment, receiving the valve closing control information of the first gas solenoid valve set by the target object may include: receiving the first valve closing time set by the user for the first gas solenoid valve.

[0058] Step S303: Count down the time for the first valve closing.

[0059] Step S305: When the countdown ends, trigger the first valve closing control signal.

[0060] For example, the first switch controller mentioned above is a PNP transistor. Accordingly, the first valve-closing control signal mentioned above can be a low level. Specifically, triggering the first valve-closing control signal when the countdown ends can include: when the current time reaches the first valve-closing time, the output pin of the stove controller sends a low level to the first valve-closing control circuit corresponding to the first gas solenoid valve.

[0061] In step S307, in response to the first valve closing control signal, the power interface of the first switch controller and the output interface of the first switch controller are connected.

[0062] For example, the first switch controller described above is a PNP transistor. Correspondingly, the power interface of the first switch controller is the collector of the transistor, and the output interface of the first switch controller is the emitter of the transistor. Specifically, the connection between the power interface and the output interface of the first switch controller in response to the first valve-closing control signal may include: in response to a low-level signal sent from the output pin of the stove controller to the first valve-closing control circuit corresponding to the first gas solenoid valve, when current flows through the resistor, a voltage drop is generated across the resistor. This voltage drop causes the base of the transistor to be forward biased relative to the emitter, thus electrons flow from the emitter to the base, forming a base current. This base current flow connects the collector and emitter of the transistor in the first valve-closing control circuit, allowing the power supply to power the first gas solenoid valve. The coil in the first gas solenoid valve generates a magnetic field based on the current, which actuates the valve core in the first gas solenoid valve, thereby closing the first gas solenoid valve.

[0063] In the above embodiments, by receiving the first valve closing time set by the target object for the first gas solenoid valve and performing countdown processing, when the countdown ends, in response to the first valve closing control signal, the power interface of the first switch controller and the output interface of the first switch controller are immediately connected, which can realize precise control of the first valve closing time, help ensure the safe closing of the gas solenoid valve, avoid safety hazards caused by improper human operation, and improve the efficiency and reliability of valve closing.

[0064] In one specific embodiment, triggering the first valve-closing control signal upon the end of the countdown includes:

[0065] If the countdown ends, output the fire shut-off command;

[0066] Based on the fire shut-off command, the first shut-off valve control signal is triggered.

[0067] In one specific embodiment, the aforementioned fire-off command is used to indicate the end of the countdown and the start of the valve-closing operation.

[0068] In the above embodiments, after the countdown ends, the output of the shut-off command can clearly instruct the valve to be closed, ensuring that the valve closure operation is performed as expected. Based on the shut-off command, the first valve closure control signal is triggered, which can realize an efficient response mechanism and react quickly when the countdown ends, ensuring that the valve is closed quickly and safely.

[0069] In one specific embodiment, the aforementioned valve-closing control information also includes a second valve-closing time corresponding to the second gas solenoid valve in a multi-burner stove, wherein the second valve-closing time is later than the first valve-closing time, such as... Figure 4 As shown, when the time difference between the first valve closing time and the second valve closing time is less than a preset duration, i.e., when the power supply is not fully charged within the time difference, the above method further includes:

[0070] Step S401: After closing the first gas solenoid valve, start a countdown for the preset duration.

[0071] In step S403, when the countdown ends, in response to the second valve-closing control signal of the second gas solenoid valve, the power interface of the second switch controller and the output interface of the second switch controller in the second valve-closing control circuit corresponding to the second gas solenoid valve are connected.

[0072] In one specific embodiment, the preset duration is the duration of a single charge of the power supply.

[0073] In one specific embodiment, the above-mentioned situation upon the countdown ending may include: closing the first gas solenoid valve and then fully recharging the power supply. In one specific embodiment, the power interface and output interface of the second switch controller in the second valve-closing control circuit corresponding to the second gas solenoid valve, which respond to the second valve-closing control signal of the second gas solenoid valve, can be found in the above-mentioned situation regarding the power interface and output interface of the first switch controller in the first valve-closing control circuit corresponding to the first gas solenoid valve in a multi-burner stove, which respond to the first valve-closing control signal of the first gas solenoid valve, and will not be elaborated further here.

[0074] In one specific embodiment, when the first valve closing time and the second valve closing time are equal, a countdown is performed on a preset duration, and the gas solenoid valves are closed according to the preset numbering sequence for the first and second gas solenoid valves.

[0075] In the above embodiments, when the time difference between the first valve closing time and the second valve closing time is less than a preset duration, the preset duration is counted down. When the countdown ends, the second valve closing control signal of the second gas solenoid valve is responded to, ensuring that after one valve closing operation, the power supply is fully charged before the next valve closing operation is performed. This ensures that the power supply can reliably achieve each valve closing operation, thereby improving the reliability of the valve closing operation.

[0076] In one specific embodiment, when the time difference is greater than or equal to a preset duration, i.e., when the power supply is fully charged within the time difference, the above method further includes:

[0077] After closing the first gas solenoid valve, the time difference is counted down.

[0078] When the countdown ends, it responds to the second valve closing control signal.

[0079] In the above embodiments, when the time difference between the first valve closing time and the second valve closing time is greater than or equal to a preset duration, after closing the first gas solenoid valve, the time difference is counted down to ensure that the gas solenoid valve is closed according to the set valve closing time, thereby improving the stability and reliability of the valve closing operation.

[0080] As can be seen from the above technical solutions provided in the embodiments of this application, the gas solenoid valve control circuit of the multi-burner stove provided in this application closes the gas solenoid valve. In response to the valve closing control signal, the power interface of the switch controller and the output interface of the switch controller in the valve closing control circuit are connected to control the power supply to the gas solenoid valve, thereby improving the ignition efficiency of the gas solenoid valve. Furthermore, the valve closing current of each gas solenoid valve comes from the energy stored in the power supply at the power bus position, achieving the effects of line sharing, reducing circuit components, and improving the stability and reliability of the electrical control circuit.

[0081] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0082] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A gas solenoid valve control circuit for a multi-burner stove, characterized in that, The gas solenoid valve control circuit includes: multiple valve-closing control circuits (1), a power supply (2), a power bus (3), and a stove controller (4). Each valve-closing control circuit (1) includes: a gas solenoid valve (5) and a switch controller (6), wherein: Multiple valve-closing control circuits (1) are connected in parallel to form a parallel circuit. The power supply (2) is used to supply power to each valve-closing control circuit (1) in the parallel circuit. The stove controller (4) is connected to the input interface of the switch controller (6). The output interface of the switch controller (6) is connected to the corresponding gas solenoid valve (5). The power interface of the switch controller (6) is connected to the power bus (3).

2. The gas solenoid valve control circuit for a multi-burner stove according to claim 1, characterized in that, The switch controller (6) is a transistor (7), the power interface of the switch controller (6) is the collector of the transistor (7), the output interface of the switch controller (6) is the emitter of the transistor (7), and the input interface of the switch controller (6) is the base of the transistor (7), wherein: The emitter of the transistor (7) is connected to the corresponding gas solenoid valve (5), the base of the transistor (7) is connected to the stove controller (4), and the collector of the transistor (7) is connected to the power supply (2) through the power bus (3).

3. A gas solenoid valve control circuit for a multi-burner stove according to any one of claims 1 to 2, characterized in that, Each of the valve-closing control circuits (1) further includes: a resistor (8), wherein: One end of the resistor (8) is connected to the input interface of the corresponding switch controller (6), and the other end of the resistor (8) is connected to the stove controller (4).

4. A gas solenoid valve control circuit for a multi-burner stove according to any one of claims 1 to 3, characterized in that, The gas solenoid valve control circuit further includes: a diode (9), and the power supply (2) is a capacitor (10), wherein: The diode (9) is used to transmit external power to the capacitor (10) to charge the capacitor (10).

5. A method for closing the gas solenoid valve of a multi-burner stove, characterized in that, The method of closing the gas solenoid valve using the gas solenoid valve control circuit of the multi-burner stove according to any one of claims 1 to 4 includes: In response to the first valve-closing control signal corresponding to the first gas solenoid valve in a multi-burner stove, the power interface of the first switch controller in the first valve-closing control circuit corresponding to the first gas solenoid valve and the output interface of the first switch controller are connected to control the power supply to the first gas solenoid valve so that the first gas solenoid valve closes.

6. The method for closing the gas solenoid valve of a multi-burner stove according to claim 5, characterized in that, The first valve-closing control signal corresponding to the first gas solenoid valve in the multi-burner stove, which connects the power interface of the first switch controller and the output interface of the first switch controller in the first valve-closing control circuit corresponding to the first gas solenoid valve, includes: Receive valve-closing control information set by the target object, wherein the valve-closing control information includes the first valve-closing time corresponding to the first gas solenoid valve; The first valve closing time is counted down; If the countdown ends, the first valve closing control signal is triggered; In response to the first valve closing control signal, the power interface of the first switch controller and the output interface of the first switch controller are connected.

7. The method for closing the gas solenoid valve of a multi-burner stove according to claim 5, characterized in that, The method further includes: After closing the first gas solenoid valve, the power supply is charged.

8. The method for closing the gas solenoid valve of a multi-burner stove according to any one of claims 5 to 7, characterized in that, The valve-closing control information also includes a second valve-closing time corresponding to the second gas solenoid valve in the multi-burner stove, wherein the second valve-closing time is later than the first valve-closing time. When the time difference between the first valve-closing time and the second valve-closing time is less than a preset duration, the method further includes: After closing the first gas solenoid valve, a countdown is performed for the preset duration; When the countdown ends, in response to the second valve-closing control signal of the second gas solenoid valve, the power interface of the second switch controller in the second valve-closing control circuit corresponding to the second gas solenoid valve and the output interface of the second switch controller are connected, and the preset duration is the duration of a single charge of the power supply.

9. The method for closing the gas solenoid valve of a multi-burner stove according to any one of claims 5 to 8, characterized in that, If the time difference is greater than or equal to the preset duration, the method further includes: After closing the first gas solenoid valve, the time difference is counted down. When the countdown ends, it responds to the second valve closing control signal.

10. The method for closing the gas solenoid valve of a multi-burner stove according to any one of claims 5 to 9, characterized in that, The triggering of the first valve-closing control signal upon the end of the countdown includes: If the countdown ends, output the fire shut-off command; Based on the shut-off command, the first valve shut-off control signal is triggered.

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