Control system for kitchen range and kitchen range

Abstract

The utility model provides a control system for a kitchen range and the kitchen range. The control system comprises a main control device, a flameout detection device, a first valve detection device and an ignition device. The flameout detection device is used for detecting whether the stove is flameout or not and generating a flameout signal indicating flameout; the first valve detection device detects the working state of a first valve assembly of a gas inlet pipeline of the stove and generates first state signals representing different working states of the first valve assembly; the main control device is electrically connected with the flameout detection device, the first valve detection device and the ignition device, and the main control device controls the ignition device to ignite according to a first state signal from the flameout detection device and a flameout signal from the flameout detection device after the stove is flameout and when the gas inlet pipeline is communicated. Under the condition of accidental flameout of the kitchen range, ignition and re-combustion can be carried out again. The cooking progress can be prevented from being influenced by accidental flameout. A user does not need to pay attention to or repeatedly check the combustion condition of the stove, and user experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical appliances, and more specifically to a control system and a stove for stoves. Background Technology

[0002] Stoves have been widely used as kitchen utensils.

[0003] During normal use, the flame of the stove may be accidentally extinguished in strong winds or other adverse conditions. If this happens, the stove will typically automatically shut off the gas supply. To resume use, the user will need to manually relight the stove.

[0004] However, users are not always near the stove during cooking. For example, in long cooking sessions such as stewing, if the flame accidentally goes out before the cooking is finished, the user may not be near the stove and cannot relight it in time, affecting the cooking progress. Furthermore, during cooking, users need to check the stove repeatedly to avoid being unable to relight it promptly after an accidental flameout, which would also negatively impact the user experience. Utility Model Content

[0005] The present invention addresses the aforementioned problems. According to one aspect of the present invention, a control system for a stove is provided. The control system includes: a main control device, a flameout detection device, a first valve detection device, and an ignition device; the flameout detection device detects whether the stove is extinguished to generate a flameout signal indicating extinguishment; the first valve detection device detects the operating state of a first valve assembly in the stove's air intake pipe to generate a first state signal indicating different operating states of the first valve assembly; the main control device is electrically connected to the flameout detection device, the first valve detection device, and the ignition device, and the main control device controls the ignition device to ignite the stove after it is extinguished and while the air intake pipe is open, based on the first state signal from the first valve detection device and the flameout signal from the flameout detection device.

[0006] In the aforementioned control system for the stove, the main control unit controls the ignition device to ignite based on the flameout signal from the flameout detection device and the first status signal from the first valve detection device. Therefore, in the event of an accidental flameout, the stove can be reignited. This prevents accidental flameout from affecting the cooking process. Furthermore, users do not need to constantly monitor or repeatedly check the stove's combustion status, improving the user experience.

[0007] For example, the flameout detection device includes a thermocouple and a first detection circuit that are electrically connected to each other. The first detection circuit is also electrically connected to a main control device. The first detection circuit is used to generate a flameout signal indicating flameout based on the potential of the thermocouple.

[0008] In this control system, the flameout detection device can quickly and accurately generate a flameout signal when the flameout occurs, so as to ensure that the main control device can control the ignition device to ignite and reignite when the intake pipe is connected, thereby improving the user experience.

[0009] For example, the first detection circuit includes an operational amplifier, the non-inverting input and the inverting input of the operational amplifier are electrically connected to the two ends of the thermocouple, and the output of the operational amplifier is electrically connected to the main control device.

[0010] In this control system, the potential of the thermocouple is amplified by an operational amplifier, enabling more sensitive detection of even slight potential changes in the thermocouple and improving the sensitivity of the flameout detection device. This allows for a rapid response to flameout in the stove, enabling timely ignition and reignition.

[0011] For example, the first detection circuit further includes a first capacitor and / or a second capacitor, the two ends of the first capacitor being electrically connected to the two ends of the thermocouple, one end of the second capacitor being electrically connected to the output terminal of the operational amplifier, and the other end of the second capacitor being grounded.

[0012] This control system effectively filters signals generated by thermocouples and / or signals output by operational amplifiers, improving signal purity and thus enhancing the accuracy of the flameout signal. This avoids the negative impact of signal noise on the control system and prevents malfunctions.

[0013] For example, the control system further includes a safety control circuit connected to the thermocouple and the second valve assembly of the intake pipe, enabling the second valve assembly to shut off the intake pipe according to the potential of the thermocouple; wherein the second valve assembly is also electrically connected to the main control device, and the main control device controls the ignition device to ignite according to a second state signal indicating different operating states of the second valve assembly.

[0014] This control system can both control the re-ignition of the stove after it is turned off and prevent gas leaks, thus improving the safety of the stove.

[0015] For example, the first valve detection device includes a first micro switch connected to the main control device, and the first valve assembly includes a valve body and a valve stem connected to the valve body. The valve stem is rotatable about an axial direction, and the first micro switch is triggered when the valve stem rotates about the axial direction.

[0016] The aforementioned control system is easy to implement and low in cost. The microswitch's signal transmission is simple, reducing the logic computation load of the main control device and increasing its operating speed.

[0017] For example, the first valve detection device further includes a second micro switch connected to the main control device, which is triggered when the valve stem rotates to different positions around the axial direction.

[0018] This control system offers more precise control over the stove. Furthermore, the aforementioned control system has a simple structure and low cost.

[0019] For example, the first micro switch and / or the second micro switch are respectively provided with a first terminal and a second terminal, the first terminal being electrically connected to the main control device and the second terminal being electrically connected to ground.

[0020] The control system with the above connection relationship has a simple circuit connection structure and is easy to implement.

[0021] For example, the main control device is implemented using a microcontroller.

[0022] Control systems using microcontrollers have advantages such as high integration, small size, high reliability, and low power consumption, which can reduce the cost of the control system.

[0023] According to another aspect of the present invention, a cooktop is provided, including the control system described above.

[0024] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0025] The above and other objects, features, and advantages of this utility model will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this utility model and form part of the specification. They are used together with the embodiments of this utility model to explain the utility model and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0026] Figure 1 A schematic diagram of a control system for a stove according to an embodiment of the present invention is shown;

[0027] Figure 2 A circuit diagram of a flameout detection device according to an embodiment of the present invention is shown;

[0028] Figure 3 A schematic diagram of a first valve assembly according to an embodiment of the present invention is shown.

[0029] The above figures include the following reference numerals:

[0030] The system includes a main control device 110, a flameout detection device 120, a first valve detection device 130, an ignition device 140, a first valve assembly 150, a thermocouple 121, a first detection circuit 122, an operational amplifier F1, an input resistor R1, a feedback resistor R2, a first capacitor C1, a second capacitor C2, a valve stem 151, a first micro switch 131, and a second micro switch 132. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model more apparent, exemplary embodiments according to this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this utility model, and not all embodiments of this utility model. It should be understood that this utility model is not limited to the exemplary embodiments described herein. Based on the embodiments of this utility model described herein, all other embodiments obtained by those skilled in the art without inventive effort should fall within the protection scope of this utility model.

[0032] According to one aspect of the present invention, a control system for a stove is provided. Figure 1 A schematic diagram of a control system for a stove according to an embodiment of the present invention is shown. Figure 1 As shown, the control system includes a main control device 110, a flameout detection device 120, a first valve detection device 130, and an ignition device 140.

[0033] The stove may include a gas inlet pipe for supplying gas to the burners. One end of the gas inlet pipe can connect to a gas cylinder or municipal gas network to provide gas to the stove. The other end of the gas inlet pipe can connect to the burners to control the gas's arrival and combustion. When the gas inlet pipe is open, gas is supplied to the burners, allowing the stove to operate in combustion mode. When the gas inlet pipe is closed, gas cannot be supplied to the burners, preventing the stove from operating in combustion mode. If the gas inlet pipe is closed while the stove is operating in combustion mode, the burners will extinguish. The gas inlet pipe may be equipped with one or more valve assemblies. By controlling the operation of these valve assemblies, the gas inlet pipe can be switched between open and closed states.

[0034] The first valve detection device 130 is used to detect the operating status of the first valve assembly in the gas inlet pipe of the stove, so as to generate a first status signal indicating different operating states of the first valve assembly. The first valve detection device 130 can detect whether the first valve assembly is open or closed, thereby determining whether gas is entering the stove through the gas inlet pipe. When the first valve detection device 130 detects that the operating state of the first valve assembly is closed, it can generate a first status signal indicating that the first valve assembly is closed. When the first valve detection device 130 detects that the operating state of the first valve assembly is open, it can generate a first status signal indicating that the first valve assembly is open. The first valve detection device 130 can be electrically connected to the main control device 110 to send the first status signal to the main control device 110.

[0035] The flameout detection device 120 can be electrically connected to the main control device 110. The flameout detection device 120 is used to detect whether the stove is extinguished, generating a flameout signal indicating extinguishment. The flameout detection device 120 can send the flameout signal to the main control device 110 via electrical connection. The flameout detection device 120 can detect whether there is a flame burning on the stove. When the flame on the stove is extinguished, the flameout detection device 120 can generate a flameout signal indicating extinguishment. The flameout detection device 120 can include any suitable device capable of detecting whether the stove is extinguished. For example, the flameout detection device 120 can include a thermocouple. When there is a flame burning in the burner of the stove, the thermocouple temperature rises, generating an electric potential; if the flame is extinguished, the thermocouple temperature drops, the electric potential disappears, and a flameout signal indicating extinguishment is generated. The flameout detection device 120 can also include an ion detector. When there is a flame burning in the burner, the ion detector is turned on. If the flame goes out, the ion detector is turned off, which will generate a flameout signal indicating that the flame has been extinguished.

[0036] The ignition device 140 is used to ignite the burners of the stove. The ignition device 140 can be implemented using any ignition circuit that is currently in use or that will be developed in the future, such as a piezoelectric ceramic ignition circuit or an electric pulse ignition circuit.

[0037] The main control unit 110 can control the operation and function of other devices in the stove based on signals from input devices or detection devices that respond to user operations. The main control unit 110 is electrically connected to the flameout detection device 120, the first valve detection device 130, and the ignition device 140. The main control unit 110 can receive a flameout signal from the flameout detection device 120 and a first status signal from the first valve detection device 130. The main control unit 110 can control the ignition device 140 to ignite. The main control unit 110 can be used to control the ignition device 140 to ignite after the stove has been extinguished and while the gas intake pipe is open, based on the first status signal from the first valve detection device 130 and the flameout signal from the flameout detection device 120. For example, when the first status signal indicates that the first valve assembly is open, and a flameout signal is received simultaneously, the main control unit 110 can determine that the stove has unexpectedly extinguished. At this time, the first valve assembly is open, the gas inlet pipe is connected, and the gas can reach the burner of the stove through the gas inlet pipe. However, the burner of the stove is extinguished. The main control device 110 can control the ignition device 140 to ignite the stove so that the stove can reignite.

[0038] In the aforementioned control system for the stove, the main control device 110 controls the ignition device 140 to ignite based on the flameout signal from the flameout detection device 120 and the first status signal from the first valve detection device 130. Therefore, in the event of an accidental flameout, the stove can be reignited. This prevents accidental flameout from affecting the cooking process. Furthermore, users do not need to constantly monitor or repeatedly check the stove's combustion status, improving the user experience.

[0039] For example, the flameout detection device includes a thermocouple and a first detection circuit that are electrically connected to each other. The first detection circuit is also electrically connected to a main control device. Figure 2 A circuit diagram of a flameout detection device 120 according to an embodiment of the present invention is shown. Figure 2As shown, the flameout detection device 120 may include a thermocouple 121 and a first detection circuit 122. The first detection circuit 122 is used to generate a flameout signal indicating flameout based on the potential of the thermocouple 121. Thermocouple 121 is a sensor capable of converting temperature changes into electrical signals. Its working principle is based on the Seebeck effect, that is, an electric potential is generated at the contact point of two different metals under the action of a temperature difference. Thermocouple 121 can be placed at the burner of the stove so that the combustion flame of the stove can heat the thermocouple 121 and generate an electric potential. The magnitude of the electric potential of thermocouple 121 can be temperature-dependent. The flame temperature of the gas combustion in the stove can be relatively fixed, which can make the thermocouple 121 generate a relatively stable electric potential. Therefore, when there is a flame burning on the stove, the electric potential of thermocouple 121 can be relatively stable; if the flame is extinguished, the temperature of thermocouple 121 drops, and the corresponding electric potential can gradually decrease. The first detection circuit 122 can be connected in parallel with the thermocouple 121 to detect the potential of the thermocouple 121. The first detection circuit 122 can generate a shutdown signal indicating flameout when the potential of the thermocouple 121 begins to decrease.

[0040] In the above technical solution, the flameout detection device 120 includes an interconnected thermocouple 121 and a first detection circuit 122. The first detection circuit 122 generates a flameout signal indicating flameout based on the potential of the thermocouple 121. Therefore, the flameout detection device 120 can quickly and accurately generate a flameout signal when the flameout occurs, ensuring that the main control device 110 can control the ignition device 140 to ignite and reignite when the intake pipe is connected, thus improving the user experience.

[0041] For example, the first detection circuit 122 may include an operational amplifier F1.

[0042] Refer again Figure 2 , Figure 2 The first detection circuit 122 shown includes an operational amplifier F1. Operational amplifier F1 has two input terminals, a non-inverting input terminal and an inverting input terminal, and one output terminal. The non-inverting and inverting input terminals of operational amplifier F1 are electrically connected to the two ends of thermocouple 121, respectively. The output terminal of operational amplifier F1 is electrically connected to the main control device 110. Figure 2 (Not shown in the diagram). Through the above connections, operational amplifier F1 can detect the potential change generated by thermocouple 121. Operational amplifier F1 can amplify and process the potential change of thermocouple 121, improving the accuracy and response speed of the first detection circuit 122.

[0043] like Figure 2As shown, operational amplifier F1 can be configured in inverting amplification mode. One end of thermocouple 121 can be electrically connected to the non-inverting input of operational amplifier F1 and to ground, while the other end of thermocouple 121 is electrically connected to the inverting input of operational amplifier F1, with an input resistor R1 positioned between them. In other words, the input resistor R1 is connected in series between one end of thermocouple 121 and the inverting input of operational amplifier F1. A feedback resistor R2 can be electrically connected between the inverting input and output of operational amplifier F1. For example, the resistance of input resistor R1 can be 10KΩ, and the resistance of feedback resistor R2 can be 1MΩ, thus giving operational amplifier F1 a potential amplification factor of 100 times for thermocouple 121. The output of operational amplifier F1 is electrically connected to the main control device 110. This configuration allows operational amplifier F1 to amplify the weak potential change from thermocouple 121, making it easier to detect flameout and generate a flameout signal indicating flameout. Preferably, a low-power, high-input-impedance, high-gain operational amplifier can be selected. The main control unit 110 can obtain the potential of the thermocouple 121 after being amplified by the operational amplifier F1. If the potential of the amplified thermocouple 121 output by the operational amplifier F1 begins to decrease, the main control unit 110 can receive a flameout signal indicating flameout.

[0044] The above technical solution amplifies the potential of thermocouple 121 through operational amplifier F1, enabling more sensitive detection of even slight potential changes in thermocouple 121 and improving the sensitivity of the flameout detection device 120. This allows for a rapid response to flameout in the stove, enabling timely ignition and reignition.

[0045] For example, the first detection circuit 122 further includes a first capacitor C1 and / or a second capacitor C2. The two ends of the first capacitor C1 are electrically connected to the two ends of the thermocouple 121, respectively. In other words, the first capacitor C1 and the thermocouple 121 form a parallel circuit. One end of this parallel circuit can be electrically connected to ground. Thus, the first capacitor C1 can filter out the noise generated by the thermocouple 121, improving the purity of the signal input from the thermocouple 121 to the input terminal of the operational amplifier F1. One end of the second capacitor C2 is electrically connected to the output terminal of the operational amplifier F1, and the other end of the second capacitor C2 is grounded. The second capacitor C2 can filter out the noise generated at the output terminal of the operational amplifier F1, improving the purity of the signal received by the main control device 110, thereby improving the accuracy of the shutdown signal.

[0046] Refer again Figure 2 The first detection circuit 122 also includes a first capacitor C1 and a second capacitor C2. The two ends of the first capacitor C1 can be connected in parallel with the thermocouple 121 between the inverting input terminal of the operational amplifier F1 and ground. One end of the second capacitor C2 is connected to the output terminal of the operational amplifier F1, and the other end of the second capacitor C2 is electrically connected to ground.

[0047] In the above technical solution, the first detection circuit 122 further includes a first capacitor C1 and / or a second capacitor C2. This effectively filters the signal generated by the thermocouple 121 and / or the signal output by the operational amplifier F1, improving signal purity and thus enhancing the accuracy of the flameout signal. This avoids the negative impact of signal noise on the control system and prevents malfunctions in the control system.

[0048] Exemplarily, the control system also includes a safety control circuit. The safety control circuit connects the thermocouple 121 and a second valve assembly of the intake manifold to enable the second valve assembly to shut off the intake manifold based on the potential of the thermocouple 121. In other words, via the connection of the safety control circuit, the second valve assembly can change its operating state according to the potential of the thermocouple 121, thereby correspondingly controlling the shut-off of the intake manifold. The second valve assembly is also electrically connected to the main control unit 110, which controls the ignition device 140 to ignite based on a second state signal indicating different operating states of the second valve assembly.

[0049] A safety control circuit connects the second valve assembly and thermocouple 121. Thus, the second valve assembly can close based on the potential of thermocouple 121, correspondingly shutting off the intake pipe. For example, the second valve assembly closes when the potential of thermocouple 121 is low.

[0050] For example, the second valve assembly may include a solenoid valve. When the solenoid valve coil is energized, the solenoid valve opens. The coil remains energized, and the solenoid valve remains open. When the solenoid valve coil is de-energized, the solenoid valve closes rapidly. In a specific example, the main control device 110 may also be used to provide current to the solenoid valve in response to a user's ignition operation signal, thereby opening the solenoid valve and connecting the air intake pipe. After the stove is ignited, the temperature of the thermocouple 121 gradually increases, and the potential of the thermocouple 121 also increases accordingly. When the stove is in combustion mode, the potential of the thermocouple 121 can always be maintained at a high level, for example, 4 millivolts. This potential of the thermocouple 121 can replace the current provided by the main control device 110 to engage the solenoid valve coil, keeping the air intake pipe connected. The current provided by the main control device 110 to the solenoid valve can be controlled by time, for example, after a preset time period of 7 seconds, the main control device 110 stops providing current to the solenoid valve. After the stove transitions from combustion to flameout, the temperature of thermocouple 121 gradually decreases, and its potential also decreases accordingly. When the potential of thermocouple 121 is less than 2 millivolts, the coil of the solenoid valve is de-energized, causing the solenoid valve to close and the gas intake pipe to shut off.

[0051] As previously described, the main control device 110 is used to control the ignition device 140 to ignite after the stove is extinguished and when the gas intake pipe is connected, based on a first status signal from the first valve detection device 130 and a flameout signal from the flameout detection device 120. Exemplarily, the main control device 110 can also control the ignition device 140 to ignite based on a second status signal.

[0052] Specifically, the ignition device 140 can be controlled to ignite when the first state signal indicates that the first valve assembly is open, the second state signal indicates that the second valve assembly is open, and a flameout signal indicating flameout is received. In other words, after an accidental flameout, if both the first and second valve assemblies are open and the air intake pipe is connected, ignition can be reignited. It can be understood that in the example where the flameout detection device 120 includes a thermocouple 121, the potential of the thermocouple 121 is related to its temperature; as the temperature decreases, the potential of the thermocouple 121 decreases. After the stove is extinguished, the potential of the thermocouple 121 gradually decreases to 0 millivolts over a period of time. This period can be, for example, 0.5 to 3 seconds. Therefore, the second valve assembly is open for a period of time after flameout, and only closes after a period of time due to the potential of the thermocouple 121 decreasing to a lower level (e.g., 2 millivolts). Therefore, when the second valve assembly and the first valve assembly are open (at which time the air intake pipe is connected), if a flameout signal indicating flameout is received, ignition can be attempted. If reignition is successful, the temperature of thermocouple 121 rises, its potential increases, the second valve assembly remains open, and the stove burns normally. If reignition fails, the temperature of thermocouple 121 drops to 0 millivolts, the second valve assembly closes, the air intake pipe is disconnected, and gas cannot enter the stove, preventing gas leakage.

[0053] In the above technical solution, the safety control circuit connects thermocouple 121 and the second valve assembly. The main control device 110 controls the ignition device 140 to ignite based on a second state signal indicating different operating states of the second valve assembly. This not only enables re-ignition after flameout but also prevents gas leakage, improving the safety of the stove.

[0054] For example, the first valve detection device 130 includes a first micro switch connected to the main control device 110. Figure 3 A schematic diagram of a first valve assembly 150 according to an embodiment of the present invention is shown. The first valve assembly 150 includes a valve body and a valve stem 151 connected to the valve body. The valve stem 151 is rotatable about the axial direction of the valve body. Figure 3 As shown, the valve stem 151 is located at the center of the first valve assembly 150, and the valve stem 151 can rotate counterclockwise. When the valve stem 151 rotates about the axial direction, it triggers the first microswitch 131.

[0055] See Figure 3The first microswitch 131 is mounted near the valve body. Its structure and position on the valve body allow it to be triggered after the valve stem 151 rotates a certain angle around its axis. In other words, the first microswitch 131 can detect the position of the valve stem 151 and thus determine the operating state of the first valve assembly 150. For example, the first microswitch 131 can be triggered after the valve stem 151 rotates 90° around its axis. The first microswitch 131 can be connected to the main control device 110. After being triggered, the first microswitch 131 can send a first state signal indicating that the first valve assembly 150 is open to the main control device 110. For example, after being triggered, the first microswitch 131 can send a high-level signal to the main control device 110.

[0056] The above technical solution allows the first valve detection device 130 to detect the operating status of the first valve assembly 150 based on the first microswitch 131. This solution is easy to implement and low in cost. The microswitch's signal transmission is simple, which reduces the logic calculation load of the main control device 110 and improves the operating speed of the main control device 110.

[0057] For example, the first valve detection device 130 also includes a second microswitch connected to the main control device 110. (See again...) Figure 3 When the valve stem 151 rotates to different positions around the axial direction, it triggers the first micro switch 131 and the second micro switch 132 respectively.

[0058] The second microswitch 132 can also be installed near the valve body. The structure and position of the second microswitch 132 on the valve body allow it to be triggered after the valve stem 151 rotates a certain angle around its axial direction. Figure 3 As shown, the first microswitch 131 is located to the left of the valve stem 151, and the second microswitch 132 is located below the valve stem 151. Therefore, when the valve stem 151 rotates counterclockwise, the first microswitch 131 is triggered first, followed by the second microswitch 132. For example, the second microswitch 132 may be triggered after the valve stem 151 has rotated 140° around its axial direction. After the second microswitch 132 is triggered, it can send a first status signal indicating the low-fire state of the first valve assembly 150 to the main control device 110. For example, after the second microswitch 132 is triggered, it can send a high-level signal to the main control device 110.

[0059] Furthermore, the first microswitch 131 can be a working switch, and the second microswitch 132 can be a low-heat switch. Both the first microswitch 131 and the second microswitch 132 are in an untriggered state when the stove is not in operation. When the user ignites the stove, they can rotate the valve stem 151, triggering the first microswitch 131. The first microswitch 131 is continuously triggered when the stove is in operation. Furthermore, after the first microswitch 131 is triggered, if the valve stem 151 is not further rotated, the first valve assembly 150 can be in a high-heat state. The user can further rotate the valve stem 151 to adjust the heat. When adjusted to low heat, the second microswitch 132 is triggered. The main control device 110 can control the ignition device 140 to ignite only after simultaneously receiving a first state signal from the first microswitch 131 indicating that the first valve assembly 150 is open, a first state signal from the second microswitch 132 indicating that the first valve assembly 150 is in a low-heat state, and a flameout signal. If the main control device 110 receives a first state signal from the first microswitch 131 indicating that the first valve assembly 150 is open and a flameout signal, but does not receive a first state signal from the second microswitch 132 indicating that the first valve assembly 150 has put the stove in a low flame state, it may not control the ignition device 140 to ignite. In other words, if the first valve assembly 150 is in a high flame state, it will not attempt to reignite after flameout to avoid the risk of deflagration.

[0060] The above technical solution utilizes both the first microswitch 131 and the second microswitch 132 to determine a more specific operating state of the first valve assembly 150, such as the first valve causing the stove to be in a low flame state. Therefore, the main control device 110 can control the ignition device 140 to ignite when the first valve assembly 150 is in this specific operating state, causing the stove to reignite. Thus, the control system provides more precise control of the stove. Furthermore, the above control system has a simple structure and low cost.

[0061] For example, the first microswitch 131 may have a first terminal and a second terminal. The first terminal is electrically connected to the main control device 110, and the second terminal is electrically connected to ground. When the first microswitch 131 is closed, the first terminal and the second terminal of the first microswitch 131 are electrically connected, and the main control device 110 can receive a first status signal from the first microswitch 131. For example, the main control device 110 may be implemented using a microcontroller, and the first terminal of the first microswitch 131 may be connected to the corresponding pin of the microcontroller. When the first microswitch 131 is triggered, the corresponding pin receives the corresponding first status signal.

[0062] Similar to the first micro switch 131, the second micro switch 132 may also have a first terminal and a second terminal. The first terminal is electrically connected to the main control device 110, and the second terminal is electrically connected to ground. The structure of the second micro switch 132 is similar to that of the first micro switch 131, and for simplicity, it will not be described again here.

[0063] Therefore, it can be seen that the control system with the above connection relationship has a simple circuit connection structure and is easy to implement.

[0064] Optionally, the main control device 110 can be implemented using electronic components or hardware circuits. For example, the main control device 110 can be constructed using electronic components such as comparators, timers, registers, and digital logic circuits, or implemented using processor chips such as microprocessors, programmable logic controllers (PLCs), digital signal processors (DSPs), field-programmable gate arrays (FPGAs), programmable logic arrays (PLAs), and application-specific integrated circuits (ASICs) and their peripheral circuits. Preferably, the main control device 110 can be implemented using a microcontroller.

[0065] Control systems using microcontrollers have advantages such as high integration, small size, high reliability, and low power consumption, which can reduce the cost of the control system.

[0066] According to another aspect of this utility model, a stove is also provided, including any of the control systems described above.

[0067] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0068] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," and "above" are used herein to describe the spatial positional relationship between one or more components or features shown in the figures and other components or features. It should be understood that spatial relative terms include not only the orientation of the component as depicted in the figures but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0069] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0070] 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. Furthermore, the term "connection" in the specification, claims, and accompanying drawings of this application can mean a direct connection or an indirect connection, wherein an indirect connection indicates that the different components being connected can be connected via other components.

[0071] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A control system for a stove, characterized in that, The control system includes: a main control unit, a flameout detection unit, a first valve detection unit, and an ignition unit; The flameout detection device is used to detect whether the stove is extinguished, so as to generate a flameout signal indicating that the stove is extinguished. The first valve detection device is used to detect the working state of the first valve assembly in the gas inlet pipe of the stove, so as to generate a first state signal representing different working states of the first valve assembly; The main control device is electrically connected to the flameout detection device, the first valve detection device, and the ignition device. The main control device is used to control the ignition device to ignite after the stove is turned off and when the air intake pipe is connected, based on the first status signal from the first valve detection device and the flameout signal from the flameout detection device.

2. The control system according to claim 1, characterized in that, The flameout detection device includes a thermocouple and a first detection circuit that are electrically connected to each other. The first detection circuit is also electrically connected to the main control device. The first detection circuit is used to generate the flameout signal indicating flameout based on the potential of the thermocouple.

3. The control system according to claim 2, characterized in that, The first detection circuit includes an operational amplifier, the non-inverting input terminal and the inverting input terminal of the operational amplifier are electrically connected to the two ends of the thermocouple, and the output terminal of the operational amplifier is electrically connected to the main control device.

4. The control system according to claim 3, characterized in that, The first detection circuit further includes a first capacitor and / or a second capacitor. The two ends of the first capacitor are electrically connected to the two ends of the thermocouple, one end of the second capacitor is electrically connected to the output terminal of the operational amplifier, and the other end of the second capacitor is grounded.

5. The control system according to claim 2, characterized in that, The control system further includes a safety control circuit, which is connected to the thermocouple and the second valve assembly of the intake pipe, so that the second valve assembly can shut off the intake pipe according to the potential of the thermocouple. The second valve assembly is also electrically connected to the main control device, and the main control device controls the ignition device to ignite according to a second state signal indicating different operating states of the second valve assembly.

6. The control system according to claim 1, characterized in that, The first valve detection device includes a first micro switch connected to the main control device. The first valve assembly includes a valve body and a valve stem connected to the valve body. The valve stem is rotatable about an axial direction. When the valve stem rotates about an axial direction, it triggers the first micro switch.

7. The control system according to claim 6, characterized in that, The first valve detection device also includes a second micro switch connected to the main control device. The first micro switch and the second micro switch are triggered respectively when the valve stem rotates to different positions around the axial direction.

8. The control system according to claim 7, characterized in that, The first micro switch and / or the second micro switch are respectively provided with a first terminal and a second terminal, the first terminal being electrically connected to the main control device, and the second terminal being electrically connected to ground.

9. The control system according to claim 1, characterized in that, The main control device is implemented using a microcontroller.

10. A stove, characterized in that, Including the control system as described in any one of claims 1 to 9.

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