Cooker and method of controlling a cooker

Abstract

The application provides a stove and a stove control method, and belongs to the technical field of stoves. The application aims to solve the technical problems of easy ignition failure and ignition explosion of the stove after adding a fan. The control device of the stove is configured to: control the ignition device to discharge at a first time after receiving an ignition instruction; control the air supply device to blow air into the ejector pipe at a second time, and the air volume is a first air volume; the first air volume is less than a second air volume; the second air volume is the air volume of the air supply device when the stove has the maximum firepower; control the injection device to inject fuel into the ejector pipe at a third time; the third time is after the second time and the first time; the fuel is used to mix with the air of the first air volume in the ejector pipe to obtain mixed gas, and the mixed gas is ignited by the ignition device at the burner. The application can improve the ignition success rate, reduce the ignition explosion problem, and improve the safety of the stove.

Description

Technical Field

[0001] This application relates to the field of stove technology, and in particular to a stove and a stove control method. Background Technology

[0002] Gas stoves and other cooktops are common kitchen appliances in people's daily lives. Thermal efficiency is an important performance parameter of cooktops, used to characterize their energy-saving effects. Generally, to improve the thermal efficiency of a cooktop, the flame height can be reduced, bringing the pot bottom closer to the burner, thus reducing the space for heat loss and improving thermal efficiency. Currently, the main technology for reducing flame height is to add a blower to the cooktop, forcing airflow to increase the air volume and thereby reducing the flame height.

[0003] However, stoves with added fans have problems such as easy ignition failure and ignition explosion. Summary of the Invention

[0004] This application provides a stove and a stove control method, which can improve the ignition success rate and reduce the problem of ignition explosion, thereby improving the safety of stove use.

[0005] In a first aspect, embodiments of this application provide a stove, comprising:

[0006] Stove head;

[0007] An ejector tube, one end of which is connected to the furnace head;

[0008] An air supply device is provided at the other end of the ejector tube. The air supply device is used to blow air into the ejector tube so that air can enter the ejector tube.

[0009] An injection device is located at the other end of the ejector tube and is used to inject fuel into the ejector tube.

[0010] An ignition device is used to ignite the mixed gas at the burner head;

[0011] A control device, connected to the air supply device, the injection device, and the ignition device, is configured to:

[0012] Immediately after receiving the ignition command, the ignition device is controlled to discharge;

[0013] At the second moment, the air supply device is controlled to blow air into the ejector tube, and the blowing volume is the first blowing volume; the first blowing volume is less than the second blowing volume; the second blowing volume is the blowing volume of the air supply device when the stove has the maximum firepower.

[0014] At a third moment, the injection device is controlled to inject fuel into the ejector tube; the third moment is after the second moment and the first moment; the fuel is used to mix with the first volume of air in the ejector tube to obtain the mixed gas, and the mixed gas is ignited by the ignition device at the burner head.

[0015] In the above technical solution, after receiving the ignition command, the stove can first control the ignition device to discharge, which is then used to ignite the air-fuel mixture. During the process of introducing air and fuel into the injector tube, the control device first controls the air supply device to blow air into the injector tube, and then controls the injection device to inject fuel into the injector tube. This ensures that the air supply device cleans the entire fuel passage (including the injector tube) before the fuel enters the tube, thus preventing the fuel and air supply devices from activating simultaneously, which could lead to excessive fuel concentration and ignition deflagration. This reduces the probability of deflagration during the ignition stage and improves the safety of the stove. By controlling the initial airflow from the air supply device into the injector tube to be less than the airflow when the stove is at maximum firepower, the air content in the injector tube during ignition is reduced, thereby increasing the fuel concentration and improving the ignition success rate.

[0016] In some embodiments of this application, controlling the injection device to inject fuel into the ejector tube at the third moment includes:

[0017] At the third moment, the injection device is controlled to inject a first amount of fuel into the ejector tube, the first amount of fuel being the amount of fuel injected into the ejector tube when the stove has maximum firepower.

[0018] The above technical solution takes into account the user's actual usage scenario. In the actual usage scenario, the user usually turns the firepower to the maximum during the ignition stage. Therefore, at the third moment, the injection device is controlled to inject the first amount of fuel into the injection tube, so that the firepower of the stove can match the user's actual command, thus improving the user experience.

[0019] In some embodiments of this application, the air supply device includes: a fan, which, when rotating, is used to blow air into the ejector tube;

[0020] The stove also includes:

[0021] A speed detection device is used to detect the speed of the fan;

[0022] The control device is also configured to:

[0023] The rotational speed of the fan is obtained through the rotational speed detection device;

[0024] At the third moment after the fan speed reaches the preset speed, the injection device is controlled to inject fuel into the ejector tube.

[0025] In the above technical solution, based on the judgment result of whether the fan speed has reached the preset speed, it is determined whether the air volume in the ejector tube has reached the first blower volume. After the fan speed reaches the preset speed, the injection device is controlled to inject fuel into the ejector tube, ensuring that the blower volume into the ejector tube reaches the first blower volume before fuel injection, further reducing the occurrence of deflagration. While further ensuring that deflagration will not occur, it also ensures that the blower volume in the ejector tube is sufficient, thus improving the ignition success rate.

[0026] In some embodiments of this application, the control device is further configured to:

[0027] Receive a firepower increase command; the increase command includes: first firepower information for indicating the increased firepower.

[0028] In response to the firepower increase command, based on the first firepower information, the amount of fuel injected into the ejector tube by the injection device is increased to a second amount.

[0029] The air supply device is controlled to increase the air volume into the ejector tube to a second air volume.

[0030] In the above technical solution, the stove can respond to the user's command to increase the firepower. During the process of increasing the firepower, the amount of fuel in the injector tube is increased first, and then the air volume is increased. This avoids the problem of the flame going out due to a sudden increase in the air volume, thus improving the user experience.

[0031] In some embodiments of this application, increasing the air volume of the air supply device blowing air into the ejector tube to a second air volume includes:

[0032] The air supply device is controlled to increase the air volume into the ejector tube at a constant speed to the second air volume, and the time for the air volume to increase at a constant speed to the second air volume is greater than or equal to a first preset time.

[0033] In the above technical solution, by increasing the air volume at a uniform rate to the second air volume, the problem of violent flame swaying caused by large air volume changes is avoided. Therefore, the stability of the flame is improved when the firepower changes during combustion, further improving the user experience. By maintaining the air volume at a uniform rate to the second air volume for a duration that is, for example, greater than or equal to a first preset duration, the air volume rises steadily, further improving the stability of the flame when the firepower increases.

[0034] In some embodiments of this application, the control device is further configured to:

[0035] Receive a firepower reduction instruction; the reduction instruction includes: second firepower information for indicating the reduced firepower.

[0036] In response to the firepower reduction command, based on the second firepower information, the air supply device is controlled to reduce the air volume into the ejector tube to a third air volume.

[0037] The amount of fuel injected into the ejector tube by the injection device is reduced to a third amount.

[0038] In the above technical solution, the stove can respond to the user's command to reduce the firepower. During the firepower reduction process, the air volume entering the ejector tube is reduced first, and then the amount of fuel entering the ejector tube is reduced. This avoids the problem that the air volume remains large when the amount of fuel is reduced, which would cause the flame to go out. It also improves the stability of the flame during the firepower reduction process and further improves the user experience.

[0039] In some embodiments of this application, the control device is further configured to:

[0040] Receive engine shutdown command;

[0041] In response to the flameout command, the injection device is controlled to stop injecting fuel into the ejector tube;

[0042] After the second preset time period, the air supply device is controlled to stop blowing air into the ejector tube.

[0043] In the above technical solution, during the flameout phase of the stove, the stove can first stop injecting fuel into the injector tube, and then, after a second preset time, stop blowing air into the injector tube. By controlling the air supply device to stop working later than the injection device, the fuel tail can be diluted, thereby weakening the stage where backfire occurs, allowing the flame to be extinguished in time, thus reducing the possibility of backfire and reducing flameout noise.

[0044] In some embodiments of this application, the stove is a gas stove.

[0045] In the above technical solution, the gas stove provided by this application can improve the ignition success rate of the gas stove and reduce the occurrence of deflagration, thereby improving the safety of the gas stove.

[0046] In some embodiments of this application, the injection device includes a proportional valve, wherein when the proportional valve is open, the fuel is injected into the ejector tube; the amount of fuel injected into the ejector tube is positively correlated with the opening degree of the proportional valve.

[0047] In the above technical solution, the proportional valve included in the injection device allows the stove to control the amount of fuel injected into the injection tube, thus improving the flexibility of fuel quantity control.

[0048] Secondly, this application provides a stove control method, the stove comprising:

[0049] Stove head;

[0050] An ejector tube, one end of which is connected to the furnace head;

[0051] An air supply device is provided at the other end of the ejector tube. The air supply device is used to blow air into the ejector tube so that air can enter the ejector tube.

[0052] An injection device is located at the other end of the ejector tube and is used to inject fuel into the ejector tube.

[0053] An ignition device is used to ignite the mixed gas at the burner head;

[0054] A control device is connected to the air supply device, the injection device, and the ignition device; the method is applied to the control device, and the method includes:

[0055] Immediately after receiving the ignition command, the ignition device is controlled to discharge;

[0056] At the second moment, the air supply device is controlled to blow air into the ejector tube, and the blowing volume is the first blowing volume; the first blowing volume is less than the second blowing volume; the second blowing volume is the blowing volume of the air supply device when the stove has the maximum firepower.

[0057] At a third moment, the injection device is controlled to inject fuel into the ejector tube; the third moment is after the second moment and the first moment; the fuel is used to mix with the first volume of air in the ejector tube to obtain the mixed gas, and the mixed gas is ignited by the ignition device at the burner head.

[0058] The stove and its control method provided in this application allow the stove to first discharge the ignition device after receiving an ignition command, which is then used to ignite the air-fuel mixture. During the process of introducing air and fuel into the injector tube, the control device first controls the air supply device to blow air into the injector tube, and then controls the injection device to inject fuel into the injector tube. This ensures that the air supply device cleans the entire fuel passage (including the injector tube) before the fuel enters the tube, thus preventing the simultaneous activation of the fuel and air supply devices, which could lead to excessive fuel concentration and ignition deflagration. This reduces the probability of deflagration during the ignition stage and improves the safety of the stove. By controlling the initial airflow from the air supply device into the injector tube to be less than the airflow when the stove is at maximum heat, the air content in the injector tube during ignition is reduced, thereby increasing the fuel concentration and improving the ignition success rate. Attached Figure Description

[0059] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0060] Figure 1 This is a schematic diagram of the structure of a stove.

[0061] Figure 2 This application provides a structural schematic diagram of a stove.

[0062] Figure 3 A flowchart illustrating a stove control method provided in this application;

[0063] Figure 4 A structural schematic diagram of another stove provided in this application;

[0064] Figure 5 A structural schematic diagram of another stove provided in this application;

[0065] Figure 6 A schematic diagram of a fire control process provided for this application;

[0066] Figure 7 A schematic diagram of another fire control process provided in this application;

[0067] Figure 8 A schematic diagram illustrating a stove flameout process provided in this application;

[0068] Figure 9 A flowchart illustrating another stove control method provided in this application;

[0069] Figure 10 This is a structural schematic diagram of a stove control device provided in this application. Detailed Implementation

[0070] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0071] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0072] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0073] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0074] The terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0075] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0076] Cooktops are common kitchen appliances in people's daily lives. Thermal efficiency is a crucial performance parameter for cooktops, used to characterize their energy-saving performance. For example, higher thermal efficiency indicates better energy saving, while lower thermal efficiency indicates poorer energy saving.

[0077] Figure 1 This is a structural diagram of a stove. Figure 1 As shown, the cooktop may include: a panel 11, a heating element 12, a support assembly 13, and a knob 14, etc. To improve the cooktop's thermal efficiency, for example, a heat-concentrating plate can be used to reduce heat loss and thus improve the cooktop's thermal efficiency. Alternatively, some embodiments also propose lowering the flame height to bring the pot bottom and burner closer together, reducing the space for heat loss and thereby improving the cooktop's thermal efficiency.

[0078] Currently, the main method to reduce flame height is through design adjustments to the shape of the burner in stoves. However, burners using naturally induced primary air have reached their design limits, and stoves still suffer from low thermal efficiency.

[0079] Therefore, some embodiments propose adding a blower to increase the pressure of the air supply, thereby increasing the amount of primary air. By increasing the amount of primary air, the flame height can be reduced, thus further improving the thermal efficiency of the stove.

[0080] However, the inventors discovered through research that after adding a fan to the stove, the stove had problems such as easy ignition failure and ignition explosion.

[0081] In view of the aforementioned problems with existing stoves, this application proposes a stove that reduces the air volume of the air supply device during the ignition phase to improve the ignition success rate. By reducing the air volume of the air supply device during the ignition phase, the fuel concentration can be increased, making the fuel easier to ignite, thereby improving the ignition success rate and enhancing the user experience.

[0082] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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. The technical solutions of this application will be described in detail below with reference to specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0083] It should be understood that this application does not limit the type of stove. In some embodiments, the stove may be a gas stove, for example. For example, in some embodiments, the stove may be a smart stove, a gas stove, an induction cooker, etc.

[0084] In some embodiments, the gas stove may also be referred to as a gas cooker, stove plate, or cooktop. The gas stove provided in this application can improve the ignition success rate and reduce the occurrence of deflagration, thereby enhancing the safety of gas stove use.

[0085] Figure 2 This is a structural schematic diagram of a stove provided in this application. Figure 2 As shown, the stove may include: burner 21, injector tube 22, air supply device 23, spray device 24, ignition device 25, and control device 26, etc.

[0086] For example, the burner head 21 can be disposed in the mounting cavity of the stove housing. The burner head 21 can form an annular cavity with an opening, through which fuel and primary air (taking this stove as a gas stove as an example, the air used for gas combustion in a gas stove is generally provided in two parts. One part is mixed with the gas before combustion, which can be called primary air. After the mixture of gas and primary air is ejected from the burner holes of the burner cap, it is mixed with the air in the environment and then burned. The air in the environment that participates in combustion can be called secondary air) can be mixed in a certain way.

[0087] One end of the ejector tube 22 can be connected to the burner head 21. In some embodiments, fuel and primary air can enter the burner head 21 through the ejector tube 22 and continue to mix in the burner head 21.

[0088] The aforementioned air supply device 23 can be located at the other end of the ejector tube 22. The air supply device 23 can be used to blow air into the ejector tube 22 so that air enters the ejector tube 22.

[0089] In some embodiments, the air supply device 23 may include modules such as a fan and an air delivery assembly. For example, the air delivery assembly may be located at the other end of the ejector tube 22. The interior of the air delivery assembly may form an air duct, and it has an air inlet and an air outlet communicating with the air duct. The air outlet may communicate with the interior of the ejector tube 22. The fan may be located at the air inlet, for example. The fan may be connected to the air delivery assembly. The air delivery assembly may form a clearance channel with openings at both ends. The interior of the clearance channel may be independent of the air duct. For example, a natural air inlet may be formed within the clearance channel. When fuel is injected through a nozzle, the gas jet ejected from the nozzle can draw air near the nozzle into the ejector tube 22 through the natural air inlet within the clearance channel.

[0090] Alternatively, in some embodiments, the air supply device 23 can be used to blow air into the ejector tube 22. For example, the air supply device 23 of any existing stove can also be referred to, which will not be described in detail here.

[0091] The aforementioned injection device 24 can be located at the other end of the ejector tube 22. The injection device 24 can be used to inject fuel into the ejector tube 22.

[0092] In some embodiments, the fuel may be, for example, liquefied petroleum gas (liquid), manufactured gas, natural gas, or other gaseous fuels.

[0093] In some embodiments, the injection device 24 may include, for example, a nozzle. This nozzle is located at the other end of the injector tube 22 to allow fuel to enter the injector tube 22 and subsequently into the burner head 21.

[0094] In some embodiments, the injection device 24 may include, for example, a proportional valve. When the proportional valve is open, the fuel can be injected into the ejector tube 22. The amount of fuel injected into the ejector tube 22 is positively correlated with the opening degree of the proportional valve. That is, the larger the opening degree of the proportional valve, the more fuel can be injected into the ejector tube 22. The smaller the opening degree of the proportional valve, the less fuel can be injected into the ejector tube 22.

[0095] It should be understood that this application does not limit the type of the proportional valve or its installation method in the injection device 24. For example, the proportional valve can refer to the proportional valve included in any existing stove for controlling the amount of fuel, which will not be described in detail here.

[0096] The proportional valve included in the injection device 24 allows the stove to control the amount of fuel injected into the injector tube 22, thus improving the flexibility of fuel quantity control.

[0097] The aforementioned ignition device 25 can be used to ignite the mixed gas at the burner head 21.

[0098] In some embodiments, the ignition device 25 may include components such as an ignition needle. For example, the ignition needle can ignite the gas mixture at the burner head 21 by discharging electricity.

[0099] The aforementioned control device 26 can be connected to the aforementioned air supply device 23, injection device 24 and ignition device 25.

[0100] For example, the control device 26 can be connected to the air supply device 23, the injection device 24 and the ignition device 25, for example, by electrical connection or communication connection, and this application does not limit this.

[0101] Optionally, the control device 26 can be any component with processing capabilities within the cooktop. For example, the control device 26 can be a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a programmable logic device (PLD), a microprocessor, a microcontroller, or any combination thereof. The control device 26 can also be other devices with processing capabilities, such as circuits, devices, or software modules; this application embodiment does not impose any limitations on this.

[0102] It should be understood that Figure 2 This description only uses some components of the stove relevant to this application as examples to illustrate the structure of the stove. This application does not limit whether the stove includes other components. For example, the stove may also include a burner cap assembly. This burner cap assembly can be placed on the burner head 21. The burner cap assembly may have flame holes that communicate with the annular cavity of the burner head 21. The primary air and fuel mixed within the burner head 21 can flow out from the flame holes of the burner cap assembly covering the burner head 21 and be ignited to form a flame. The flame heats the bottom of the cookware for the user to cook.

[0103] Figure 3 This is a flowchart illustrating a stove control method provided in this application. The execution entity of this stove control method can be the control device 26. That is, the stove control method can be applied to the control device 26 of the stove. Or, the control device 26 can be configured to execute the stove control method. Figure 3 As shown, the method may include the following steps:

[0104] S101. Upon receiving the ignition command, the ignition device 25 is controlled to discharge.

[0105] For example, the control device 26 can also be connected to the knob of the stove. For instance, the control device 26 can determine that an ignition command has been received when the user presses and rotates the knob. The aforementioned first moment is the moment after the moment the ignition command is received.

[0106] For example, taking the ignition device 25 as an ignition needle, the control device 26 can control the ignition needle to discharge.

[0107] Optionally, the specific method by which the control device 26 controls the ignition device 25 to discharge can refer to the method of discharging the ignition device 25 of any existing stove, and will not be described in detail here.

[0108] S102. At the second moment, the air supply device 23 is controlled to blow air into the ejector tube 22, and the blowing volume is the first blowing volume.

[0109] Optionally, the second moment can be after the first moment mentioned above. Alternatively, the second moment can also be the same as the first moment.

[0110] For example, taking the air supply device 23 as an example that includes a fan, the control device 26 can optionally control the fan to rotate, thereby blowing air into the ejector tube 22. In some embodiments, the air volume can be positively correlated with the rotational speed of the fan in the air supply device 23. For example, the higher the fan speed, the greater the air volume can be. The lower the fan speed, the smaller the air volume can be.

[0111] The first air volume can be less than the second air volume. The second air volume can be the air volume of the air supply device 23 when the stove is at its maximum firepower.

[0112] In some embodiments, the aforementioned first air volume can be, for example, a preset air volume. Taking controlling the air volume of the air supply device 23 into the ejector tube 22 by controlling the fan speed as an example, the control device 26 can, for example, pre-store a preset fan speed value for the ignition stage. The control device 26 can, for example, control the fan rotation based on this preset speed value, so that the fan speed reaches the preset speed value, thereby achieving airflow into the ejector tube 22, and the air volume is the first air volume.

[0113] The inventors discovered through research that when users trigger the ignition command by rotating the knob on the stove, they typically rotate it to the maximum heat setting. Therefore, in existing stoves, during the ignition phase, the stove responds to the user's ignition command by rotating the knob to the maximum heat setting. Consequently, the airflow at this point is the same as when the stove is at maximum heat, leading to excessively high air content and ultimately, ignition failure.

[0114] Therefore, by setting the first blower volume to be less than the second blower volume of the air supply device 23 when the stove's firepower is at its maximum, the air content in the injector tube 22 during ignition is reduced, thereby increasing the fuel concentration in the injector tube 22 and thus improving the ignition success rate.

[0115] In some embodiments, the first air volume can be, for example, half (50%) of the second air volume.

[0116] S103. At the third moment, control the injection device 24 to inject fuel into the ejector tube 22.

[0117] The third moment occurs after the second moment mentioned above, and the third moment occurs after the first moment.

[0118] In other words, the control device 26 can first control the air supply device 23 to blow air into the ejector tube 22, and the blowing volume is the first blowing volume. Then, it controls the injection device 24 to inject fuel into the ejector tube 22. Through the above method, after the air supply device 23 blows air into the ejector tube 22, the injection device 24 injects fuel into the ejector tube 22. This ensures that the air supply device 23 cleans the entire fuel passage (including the ejector tube 22) before the fuel enters the ejector tube 22. Then, the fuel enters the passage, avoiding the problem of ignition and deflagration caused by excessive fuel concentration when the fuel and air supply device 23 are turned on at the same time. This reduces the probability of deflagration during the ignition stage and improves the safety of the stove.

[0119] For example, taking the injection device 24 as an example, which includes a proportional valve, the control device 26 can control the injection device 24 to inject fuel into the ejector tube 22 by controlling the proportional valve to open.

[0120] The aforementioned fuel can be mixed with the first volume of air in the ejector tube 22 to obtain a mixed gas. This mixed gas can be ignited at the burner head 21 by the aforementioned ignition device 25.

[0121] In this embodiment, after receiving the ignition command, the stove can first control the ignition device 25 to discharge, which is then used to ignite the air-fuel mixture. During the process of introducing air and fuel into the ejector tube 22, the control device 26 first controls the air supply device 23 to blow air into the ejector tube 22, and then controls the injection device 24 to inject fuel into the ejector tube 22. This ensures that the air supply device 23 cleans the entire fuel passage (including the ejector tube 22) before the fuel enters the ejector tube 22, thus avoiding the problem of excessive fuel concentration and ignition deflagration caused by the simultaneous activation of fuel and air supply device 23. This reduces the probability of deflagration during the ignition stage and improves the safety of the stove. By controlling the first air volume of the air supply device 23 into the ejector tube 22 to be less than the air volume of the air supply device 23 when the stove is at its maximum firepower, the air content in the ejector tube 22 during ignition is reduced, thereby increasing the fuel concentration in the ejector tube 22 and improving the ignition success rate.

[0122] As one possible implementation, the control device 26 may, for example, control the injection device 24 to inject a first amount of fuel into the ejector tube 22 at a third moment. The first amount of fuel is the amount of fuel injected by the injection device 24 into the ejector tube 22 when the stove has the maximum firepower.

[0123] For example, taking the injection device 24 as including a proportional valve, and controlling the amount of fuel injected into the injection tube by controlling the opening degree of the proportional valve, the control device 26 may, for example, be pre-configured with a preset opening degree of the proportional valve required for the ignition stage. The control device 26 may, for example, control the opening degree of the proportional valve to reach the aforementioned preset opening degree at a third moment, thereby controlling the injection device 24 to inject a first amount of fuel into the ejector tube 22.

[0124] In some embodiments, the higher the heat output of the stove, the more fuel is required. The lower the heat output of the stove, the less fuel is required.

[0125] The above method takes into account the user's actual usage scenario. In the actual usage scenario, the user usually turns the firepower to the maximum during the ignition stage. Therefore, at the third moment, the injection device 24 is controlled to inject the first amount of fuel into the ejector tube 22, so that the firepower of the stove can match the user's actual command, thus improving the user experience.

[0126] Figure 4 A schematic diagram of another type of stove provided in this application. (See attached diagram.) Figure 4 As shown, in some embodiments, the air supply device 23 of the stove may include a fan 41. When the fan 41 rotates, it can be used to blow air into the ejector tube 22. As a possible implementation, considering that the rotational speed of the fan 41 is related to the air volume, monitoring the rotational speed of the fan 41 can further ensure the accuracy of the air volume entering the ejector tube 22.

[0127] Figure 5 This is a structural schematic diagram of another type of stove provided in this application. Figure 5 As shown, in some embodiments, the stove may further include a speed detection device 51.

[0128] The speed detection device 51 can be used to detect the speed of the fan 41.

[0129] Optionally, the type of the speed detection device 51, as well as its installation method and location, can be determined by referring to any existing method for detecting the speed of the fan 41, and will not be elaborated further here.

[0130] In some embodiments, the control device 26 may also be connected to the speed detection device 51. For example, the control device 26 may be connected to the speed detection device 51 via an electrical connection or a communication connection.

[0131] The aforementioned control device 26 can, for example, obtain the rotational speed of the fan 41 through the rotational speed detection device 51. Then, at the third moment after the rotational speed of the fan 41 reaches the preset rotational speed, the control device 26 can control the injection device 24 to inject fuel into the ejector tube 22.

[0132] In other words, the aforementioned third moment occurs after the fan 41 reaches the preset speed.

[0133] For example, the preset rotation speed may be pre-stored in the control device 26.

[0134] Once the speed of the blower 41 reaches the preset speed, it indicates that the blower 41 has cleaned the ejector tube 22 and the blower volume into the ejector tube 22 has reached the first blower volume. Therefore, the injection device 24 can be controlled to inject fuel into the ejector tube 22 to ensure that deflagration does not occur and to improve the success rate of ignition.

[0135] By using the above method, based on the judgment result of whether the speed of the blower 41 has reached the preset speed, it is determined whether the air volume in the ejector tube 22 has reached the first blow volume. After the speed of the blower 41 reaches the preset speed, the injection device 24 is controlled to inject fuel into the ejector tube 22, ensuring that the blow volume into the ejector tube 22 reaches the first blow volume before fuel injection, further reducing the occurrence of deflagration. While further ensuring that deflagration will not occur, it also ensures that the blow volume in the ejector tube 22 is sufficient, thus improving the ignition success rate.

[0136] In some embodiments, if the fan 41 fails to reach the preset speed after a target time (e.g., a speed pre-stored in the control device 26), it indicates that the fan 41 may be stuck and unable to rotate, or that the air supply device 23 may be malfunctioning. Therefore, the control device 26 may, for example, output a prompt message when the fan 41 fails to reach the preset speed after the target time. This prompt message may, for example, be used to alert the user that the stove's air supply function is malfunctioning.

[0137] For example, taking the stove as an example, which includes a buzzer, the control device 26 can, for instance, control the buzzer to emit a sound to output the aforementioned prompt information.

[0138] Using the above method, when the fan 41 fails to rotate normally, a prompt message indicating that the stove's air supply function is abnormal can be output, allowing users to know the fault of the stove in a timely manner and improving the user experience.

[0139] Furthermore, the control device 26 can, for example, prevent the injection device 24 from injecting fuel into the ejector tube 22 if the fan 41 has not reached the preset speed after a target time, thus avoiding the danger of unburned fuel posing a risk to subsequent use. Therefore, the safety of using this stove is further improved through the above method.

[0140] In some embodiments, the control device 26 can also adjust the firepower of the stove after successful ignition, that is, during the combustion process.

[0141] For example, Figure 6 This is a schematic diagram of a fire control process provided in this application. Figure 6 As shown, as one possible implementation, the control device 26 can also perform the following steps:

[0142] S601, Receives firepower increase command.

[0143] The increase command may include, for example, first firepower information for indicating the increased firepower.

[0144] For example, if the control device 26 also includes a knob, the control device 26 can determine that it has received a firepower increase command based on the user's operation of turning the knob in a first direction (i.e., the direction of increasing firepower, such as clockwise).

[0145] For example, the aforementioned first firepower information may include an identifier for characterizing the increased firepower. Taking the injection device 24 as an example, which includes a proportional valve, this identifier may be used to characterize the opening degree of the proportional valve.

[0146] S602, in response to the firepower increase command, based on the first firepower information, control the amount of fuel injected by the injection device 24 into the ejector tube 22 to increase to the second fuel amount.

[0147] Taking the first firepower information as an example, which includes an identifier to characterize the increased firepower and the identifier to characterize the opening of the proportional valve, the control device 26 can, for example, control the opening of the proportional valve of the injection device 24 to increase based on the identifier, thereby increasing the amount of fuel injected into the ejector tube 22 to the second fuel amount.

[0148] S603, the air volume of the air supply device 23 blowing into the ejector tube 22 is increased to the second air volume.

[0149] For example, the aforementioned first firepower information may also include an identifier representing the required air volume after the firepower is increased. Taking the air supply device 23 including a fan 41 as an example, this identifier may be used to represent the rotational speed of the fan 41. For example, the control device 26 may, based on this identifier, control the rotational speed of the fan 41 to increase, thereby increasing the air volume blown into the ejector tube 22 through the air supply device 23 to a second air volume.

[0150] In this embodiment, the stove can respond to the user's command to increase the firepower. During the process of increasing the firepower, the amount of fuel in the injector tube 22 is increased first, and then the air volume is increased. This avoids the problem of the flame going out due to a sudden increase in the air volume, thus improving the user experience.

[0151] In some embodiments, the control device 26 may, for example, control the air supply device 23 to increase the air volume of the air blower into the ejector tube 22 at a constant speed to the second air volume, and the time for the air volume to increase at a constant speed to the second air volume may, for example, be greater than or equal to a first preset time.

[0152] Taking the air supply device 23 including the fan 41 as an example, the control device 26 can, for example, control the rotation speed of the fan 41 to uniformly increase to the target rotation speed (i.e., the rotation speed required to achieve the second air volume) over a first preset time period, thereby achieving a uniform increase in the air volume of the air blown into the ejector tube 22 to the aforementioned second air volume.

[0153] For example, the first preset duration can be pre-stored in the control device 26.

[0154] By increasing the air volume at a constant rate to the second air volume, the problem of violent flame flickering caused by large air volume changes is avoided, thus improving the flame stability when the firepower changes during combustion and further improving the user experience. By maintaining the air volume at a constant rate to the second air volume for a duration that is, for example, greater than or equal to a first preset duration, the air volume rises steadily, further improving the flame stability when the firepower increases.

[0155] Figure 7 A schematic diagram illustrating another fire control process provided in this application. (See diagram below.) Figure 7 As shown, as one possible implementation, the control device 26 can also perform the following combustion process with reduced firepower:

[0156] S701, receives firepower reduction command.

[0157] The reduction instruction may include, for example, second firepower information used to indicate the reduced firepower.

[0158] For example, if the control device 26 also includes a knob, the control device 26 can determine that it has received a firepower reduction command based on the user's operation of turning the knob in a second direction (i.e., the direction of firepower reduction, such as counterclockwise).

[0159] For example, the aforementioned second firepower information may include an identifier for characterizing the reduced firepower. Taking the injection device 24 as an example, which includes a proportional valve, this identifier may be used to characterize the opening degree of the proportional valve.

[0160] S702, in response to the firepower reduction command, based on the second firepower information, controls the air supply device 23 to reduce the air volume to the ejector tube 22 to the third air volume.

[0161] For example, the aforementioned second firepower information may also include an identifier representing the required air volume for reducing the firepower. Taking the air supply device 23 including a fan 41 as an example, this identifier may be used to represent the rotational speed of the fan 41. For example, the control device 26 may, based on this identifier, control the rotational speed of the fan 41 to decrease, thereby reducing the air volume blown into the ejector tube 22 through the air supply device 23 to a third air volume.

[0162] S703, the amount of fuel injected into the ejector tube 22 by the control injection device 24 is reduced to a third fuel amount.

[0163] Taking the second firepower information as an example, which includes an identifier to characterize the reduced firepower and the identifier to characterize the opening of the proportional valve, the control device 26 can, for example, control the opening of the proportional valve of the injection device 24 to decrease based on the identifier, thereby reducing the amount of fuel injected into the ejector tube 22 to a third amount of fuel.

[0164] In this embodiment, the stove can respond to the user's command to reduce the firepower. During the firepower reduction process, the blower volume entering the ejector tube 22 is reduced first, and then the amount of fuel entering the ejector tube 22 is reduced. This avoids the problem that the blower volume remains large when the amount of fuel is reduced, which would cause the flame to go out. It also improves the stability of the flame during the firepower reduction process and further improves the user experience.

[0165] In some embodiments, the control device 26 can also control the air supply device 23 and the spray device 24 of the stove during the flameout process to ensure the safety of the stove during the flameout process.

[0166] For example, Figure 8 This is a schematic diagram illustrating a stove flameout process provided in this application. Figure 8 As shown, as one possible implementation, the control device 26 can also perform the following steps:

[0167] S801, Receives engine shutdown command.

[0168] For example, if the control device 26 also includes a knob, the control device 26 can determine that a fire-off command has been received based on the user's operation of turning the knob to the fire-off position.

[0169] S802, in response to the flameout command, control the injection device 24 to stop injecting fuel into the ejector tube 22.

[0170] For example, the control device 26 can control the proportional valve of the injection device 24 to close, thereby controlling the injection device 24 to stop injecting fuel into the ejector tube 22.

[0171] S803. After the second preset time, the air supply device 23 stops blowing air into the ejector tube 22.

[0172] For example, the second preset duration can be pre-stored in the control device 26. For example, the second preset duration can be 500 milliseconds, etc.

[0173] For example, the control device 26 can control the fan 41 of the air supply device 23 to stop rotating, thereby stopping the blowing of air into the ejector tube 22.

[0174] In this embodiment, during the flameout phase of the stove, the stove can first stop injecting fuel into the injector tube 22, and then, after a second preset time, stop blowing air into the injector tube 22. By controlling the air supply device 23 to stop operating later than the injection device 24, the fuel tail can be diluted, thereby weakening the stage of backfire and allowing the flame to be extinguished in time, thus reducing the possibility of backfire and reducing flameout noise.

[0175] For example, taking the above-mentioned stove as a gas stove (in some embodiments, the gas stove may also be called a blower gas stove), the above-mentioned fuel as gas, and the air supply device 23 including a fan 41 and the injection device 24 including a proportional valve as an example, Figure 9 A flowchart illustrating another stove control method provided in this application.

[0176] like Figure 9 As shown, after the blower gas stove is powered on, it can perform a self-test on each electrical component to determine whether the gas stove's self-test is qualified.

[0177] If the test is successful, the gas stove can enter standby mode. If it fails, a fault code will be displayed, and then the stove will be turned off.

[0178] After the gas stove enters standby mode, it can still respond to the user's ignition command. The gas stove can then determine if the blower 41 is operating normally. If so, it can control the blower 41 to start blowing air at 50% of the required air volume for the ignition load (i.e., the aforementioned second air volume, which is the air volume of the air supply device 23 when the stove's firepower is at its maximum), and simultaneously, the ignition needle can discharge. During ignition, the gas stove can fix the corresponding gas volume and the blower 41's air volume.

[0179] By using a blower 41 with an air volume that is half of the air volume required for normal combustion of the ignition gas (i.e., the aforementioned second air volume, which is the air volume of the air supply device 23 when the stove is at its maximum firepower), which is 50% of the normal volume, the gas concentration is relatively high, thus increasing the success rate of gas ignition.

[0180] Upon receiving the ignition signal, the ignition needle begins to discharge, and the fan 41 starts to rotate. After 200-500ms, the proportional valve opens the gas passage. This method first clears the entire gas passage with the fan 41, and then allows gas to enter the passage once the fan 41's speed increases. This avoids the problem of excessive gas concentration caused by the simultaneous operation of the fan 41 and the gas, which could lead to ignition explosion, thus improving the safety of the stove.

[0181] In some embodiments, such as Figure 9 As shown, the stove can also detect whether the gas is ignited via a thermocouple. If so, it can continue to respond to the user's firepower adjustment command, adjusting the firepower to the set level via the proportional valve, while the fan 41 matches the airflow according to the firepower level. If not, a fault code can be displayed, and then the stove will be turned off.

[0182] When switching between different fire levels, if the fire level is increased from low to high, the proportional valve increases the gas flow, and then the blower 41 uniformly increases the airflow. For example, this process of increasing the airflow may take more than or equal to 2 seconds to maintain flame stability during the increase in fire level.

[0183] If the firepower is reduced from high to low, the blower 41 will first reduce the air volume to the required air volume, and then adjust the gas volume of the proportional valve to the required gas volume to maintain the stability of the flame during the firepower reduction process.

[0184] During the flameout process, if a flameout command (or shut-off command) is received, the gas supply can be cut off first, while the blower 41 continues to run. Then, for example, after 500ms, the blower 41 can be de-energized and stopped. This method reduces backfire noise after flameout, and by delaying the de-energization of the blower 41, the exhaust stream of the gas is diluted, weakening the backfire stage and allowing the flame to extinguish promptly, thus reducing the possibility of backfire and consequently reducing flameout noise.

[0185] Figure 10 This is a schematic diagram of a stove control device provided in this application. This stove control device can be applied to the control devices described in any of the foregoing embodiments. Figure 10 As shown, the device may include:

[0186] The first control module 111 is used to control the ignition device to discharge at the first moment after receiving the ignition command.

[0187] The second control module 112 is used to control the air supply device to blow air into the ejector tube at a second moment, and the blowing volume is a first blowing volume. Wherein, the first blowing volume is less than the second blowing volume; the second blowing volume is the blowing volume of the air supply device when the stove has the maximum firepower.

[0188] The third control module 113 is used to control the injection device to inject fuel into the ejector tube at a third moment. The third moment occurs after the second and first moments. The fuel is used to mix with the first volume of air in the ejector tube to obtain the mixed gas, which is then ignited by the ignition device at the burner head.

[0189] Optionally, the third control module 113 is specifically used to control the injection device to inject a first amount of fuel into the ejector tube at the third moment. The first amount of fuel is the amount of fuel injected by the injection device into the ejector tube when the stove's firepower is at its maximum.

[0190] Optionally, the air supply device includes a fan, which, when rotating, blows air into the injector tube; the stove further includes a speed detection device for detecting the speed of the fan. Optionally, the stove control device may also include an acquisition module 114 for acquiring the speed of the fan through the speed detection device. Optionally, the third control module 113 is specifically used to control the injection device to inject fuel into the injector tube at the third moment after the fan speed reaches a preset speed.

[0191] Optionally, the stove control device may further include a receiving module 115 for receiving a firepower increase command. The increase command includes first firepower information indicating the increased firepower. Optionally, the third control module 113 is further configured, in response to the firepower increase command, to control the amount of fuel injected into the ejector tube by the injection device to increase to a second fuel amount based on the first firepower information. Optionally, the second control module 112 is further configured to control the airflow rate of the air supply device into the ejector tube to increase to a second airflow rate.

[0192] Optionally, the second control module 112 is specifically used to control the air supply device to increase the air volume into the ejector tube at a constant speed to the second air volume, and the duration of the air volume increasing at a constant speed to the second air volume is greater than or equal to a first preset duration.

[0193] Optionally, the receiving module 115 is further configured to receive a firepower reduction command. The reduction command includes second firepower information indicating the reduced firepower. Optionally, the second control module 112 is further configured, in response to the firepower reduction command, to control the air supply device to reduce the airflow volume into the ejector tube to a third airflow volume based on the second firepower information. Optionally, the third control module 113 is further configured to control the amount of fuel injected into the ejector tube by the injection device to reduce to a third fuel amount.

[0194] Optionally, the receiving module 115 is further configured to receive a flameout command. Optionally, the third control module 113 is further configured to, in response to the flameout command, control the injection device to stop injecting fuel into the ejector tube. Optionally, the second control module 112 is further configured to, after a second preset time, control the air supply device to stop blowing air into the ejector tube.

[0195] The stove control device provided in this application is used to execute the aforementioned stove control method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0196] This application also provides a computer-readable storage medium, which may include various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. Specifically, the computer-readable storage medium stores program instructions, which are used in the methods described in the above embodiments.

[0197] This application also provides a program product including execution instructions stored in a readable storage medium. At least one processor of the cooktop can read the execution instructions from the readable storage medium, and the at least one processor executes the execution instructions to cause the cooktop to perform at least one of the cooktop control methods provided in the various embodiments described above.

[0198] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0199] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A hob, characterized in that include: Stove head; An ejector tube, one end of which is connected to the furnace head; An air supply device is provided at the other end of the ejector tube. The air supply device is used to blow air into the ejector tube so that air can enter the ejector tube. An injection device is located at the other end of the ejector tube and is used to inject fuel into the ejector tube. An ignition device is used to ignite the mixed gas at the burner head; A control device, connected to the air supply device, the injection device, and the ignition device, is configured to: Immediately after receiving the ignition command, the ignition device is controlled to discharge; At the second moment, the air supply device is controlled to blow air into the ejector tube, and the blowing volume is the first blowing volume; the first blowing volume is less than the second blowing volume; the second blowing volume is the blowing volume of the air supply device when the stove has the maximum firepower. At a third moment, the injection device is controlled to inject fuel into the ejector tube; the third moment is after the second moment and the first moment; the fuel is used to mix with the first volume of air in the ejector tube to obtain the mixed gas, and the mixed gas is ignited by the ignition device at the burner head.

2. The stove according to claim 1, characterized in that, The step of controlling the injection device to inject fuel into the ejector tube at the third moment includes: At the third moment, the injection device is controlled to inject a first amount of fuel into the ejector tube, the first amount of fuel being the amount of fuel injected into the ejector tube when the stove has maximum firepower.

3. The stove according to claim 1 or 2, characterized in that, The air supply device includes a fan, which, when rotating, is used to blow air into the ejector tube; The stove also includes: A speed detection device is used to detect the speed of the fan; The control device is also configured to: The rotational speed of the fan is obtained through the rotational speed detection device; At the third moment after the fan speed reaches the preset speed, the injection device is controlled to inject fuel into the ejector tube.

4. The stove according to claim 1 or 2, characterized in that, The control device is also configured to: Receive a firepower increase command; the increase command includes: first firepower information for indicating the increased firepower. In response to the firepower increase command, based on the first firepower information, the amount of fuel injected into the ejector tube by the injection device is increased to a second amount. The air supply device is controlled to increase the air volume into the ejector tube to a second air volume.

5. The stove according to claim 4, characterized in that, The control of increasing the air volume of the air supply device into the ejector tube to a second air volume includes: The air supply device is controlled to increase the air volume into the ejector tube at a constant speed to the second air volume, and the time for the air volume to increase at a constant speed to the second air volume is greater than or equal to a first preset time.

6. The stove according to claim 1 or 2, characterized in that, The control device is also configured to: Receive a firepower reduction instruction; the reduction instruction includes: second firepower information for indicating the reduced firepower. In response to the firepower reduction command, based on the second firepower information, the air supply device is controlled to reduce the air volume into the ejector tube to a third air volume. The amount of fuel injected into the ejector tube by the injection device is reduced to a third amount.

7. The stove according to claim 1 or 2, characterized in that, The control device is also configured to: Receive engine shutdown command; In response to the flameout command, the injection device is controlled to stop injecting fuel into the ejector tube; After the second preset time period, the air supply device is controlled to stop blowing air into the ejector tube.

8. The stove according to claim 1 or 2, characterized in that, The stove is a gas stove.

9. The stove according to claim 1 or 2, characterized in that, The injection device includes a proportional valve, which, when open, injects fuel into the ejector tube; the amount of fuel injected into the ejector tube is positively correlated with the opening degree of the proportional valve.

10. A stove control method, characterized in that, The stove includes: Stove head; An ejector tube, one end of which is connected to the furnace head; An air supply device is provided at the other end of the ejector tube. The air supply device is used to blow air into the ejector tube so that air can enter the ejector tube. An injection device is located at the other end of the ejector tube and is used to inject fuel into the ejector tube. An ignition device is used to ignite the mixed gas at the burner head; A control device is connected to the air supply device, the injection device, and the ignition device; the method is applied to the control device, and the method includes: Immediately after receiving the ignition command, the ignition device is controlled to discharge; At the second moment, the air supply device is controlled to blow air into the ejector tube, and the blowing volume is the first blowing volume; the first blowing volume is less than the second blowing volume; the second blowing volume is the blowing volume of the air supply device when the stove has the maximum firepower. At a third moment, the injection device is controlled to inject fuel into the ejector tube; the third moment is after the second moment and the first moment; the fuel is used to mix with the first volume of air in the ejector tube to obtain the mixed gas, and the mixed gas is ignited by the ignition device at the burner head.

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