Control method and device of electric kettle

Abstract

The invention discloses a control method and device of an electric kettle, and relates to the technical field of electric appliances. The method comprises the following steps: starting a heating component in response to a heating instruction, and obtaining an initial weight detected by a weight sensor; the steam flow detected by the gas flowmeter and the current weight detected by the weight sensor are obtained, and the water weight difference value is calculated according to the initial weight and the current weight. And determining the current heating stage of the electric kettle according to the difference between the steam flow and the water weight. And determining the target operation power associated with the current heating stage. And under the condition that the target operation power is adjusted to the set boiling power, the heating part is controlled to operate at the set boiling power for a set duration and then stop. Therefore, according to the real-time steam flow and water weight change, the heating power of the heating component can be regulated and controlled in a staged mode for temperature control, and on the basis that energy is saved, the problem that dangerous situations are caused by the fact that a temperature sensor is adopted in the electric kettle and affected by the altitude is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical appliances, and in particular to a control method and device for an electric kettle. Background Art

[0002] At present, smart electric kettles generally use built-in or external temperature sensors to collect the internal temperature of the kettle to control the on and off of the heating module. For example, when the temperature sensor detects that the temperature reaches 100 degrees or remains stable for a long time, it means that the electric kettle is in a boiling state and the heating module is cut off.

[0003] However, the above control method is greatly affected by altitude factors. For example, low air pressure will cause the temperature response time of the temperature sensor to slow down, making it time-consuming to rely on the temperature sensor to determine whether the electric kettle is in a boiling state, which can easily cause dangerous situations such as continuous heating of boiling water and overflow, circuit short circuit, etc. Summary of the invention

[0004] In view of the technical problem that the temperature sensor of an electric kettle is greatly affected by the altitude, which may easily cause dangerous situations such as continuous heating and overflow of boiling water and circuit short circuit during use, the present invention is proposed to provide a control method and device for an electric kettle that overcomes the above-mentioned problem or at least partially solves the above-mentioned problem.

[0005] Based on the first aspect of the present invention, a control method of an electric kettle is provided, the electric kettle comprising a gas flow meter, a weight sensor, a heating component and a controller, the gas flow meter, the weight sensor and the heating component are electrically connected to the controller respectively, the method comprising:

[0006] In response to a heating instruction, starting the heating component and acquiring an initial weight detected by the weight sensor;

[0007] Acquire the steam flow rate detected by the gas flow meter and the current weight detected by the weight sensor;

[0008] Calculating a water weight difference based on the initial weight and the current weight;

[0009] determining a current heating stage of the electric kettle according to the steam flow rate and the water weight difference;

[0010] determining a target operating power associated with the current heating stage, and controlling the heating component to operate according to the target operating power to adjust a heating rate of the water in the electric kettle by the heating component;

[0011] When the target operating power is adjusted to the set boiling power, the heating component is controlled to operate at the set boiling power for a set time and then stop.

[0012] An optional invention content, determining the current heating stage of the electric kettle according to the steam flow rate and the water weight difference includes:

[0013] When the steam flow rate does not meet the preset flow rate condition, or when the water weight difference does not meet the preset difference condition, determining that the current heating stage of the electric kettle is a constant heating stage;

[0014] When the steam flow rate meets the preset flow rate condition and the water weight difference meets the preset difference condition, it is determined that the current heating stage of the electric kettle is the variable power heating stage.

[0015] In an optional invention, the determining the target operating power associated with the current heating stage includes:

[0016] The target operating power associated with the constant heating stage is determined to be the maximum operating power.

[0017] An optional invention content, the variable power heating stage includes at least a first power reduction heating stage and a second power reduction heating stage, and when the steam flow rate meets a preset flow rate condition and the water weight difference meets a preset difference condition, determining that the current heating stage of the electric kettle is a variable power heating stage includes:

[0018] When the steam flow rate satisfies a preset flow rate condition and the water weight difference satisfies a preset difference condition, if the steam flow rate is less than a first flow rate threshold and the water weight difference is less than a first weight threshold, determining that the current heating stage of the electric kettle is a first power reduction heating stage;

[0019] If the steam flow rate is within the first flow rate threshold and the second flow rate threshold, and the water weight difference is within the first weight threshold and the second weight threshold, it is determined that the current heating stage of the electric kettle is the second power reduction heating stage.

[0020] In an optional invention, the determining the target operating power associated with the current heating stage includes:

[0021] Determining that the target operating power associated with the first power reduction heating stage is the first operating power;

[0022] The target operating power associated with the second power reduction heating stage is determined to be a second operating power, wherein the maximum operating power is greater than the first operating power, and the first operating power is greater than the second operating power.

[0023] In an optional invention, the method further includes a first step of determining the first operating power, the first step including:

[0024] Determining the total amount of water in the electric kettle based on the initial weight;

[0025] Matching the target steam flow rate associated with the water reaching the boiling point according to the total amount of water;

[0026] The first operating power is determined according to the target steam flow rate, the steam flow rate and a first weighting coefficient.

[0027] In an optional invention, the method further includes a first step of determining the first operating power, the first step including:

[0028] Determining the total amount of water in the electric kettle based on the initial weight;

[0029] Matching the target weight difference associated with the boiling point of the water according to the total amount of water;

[0030] The first operating power is determined according to the target weight difference, the water weight difference and a first weighting coefficient.

[0031] An optional invention content, the variable power heating stage includes at least a first power reduction heating stage, a second power reduction heating stage and a third power reduction heating stage, and when the steam flow rate meets a preset flow rate condition and the water weight difference meets a preset difference condition, determining that the current heating stage of the electric kettle is a variable power heating stage includes:

[0032] When the steam flow rate satisfies a preset flow rate condition and the water weight difference satisfies a preset difference condition, if the steam flow rate is less than a first flow rate threshold and the water weight difference is less than a first weight threshold, determining that the current heating stage of the electric kettle is a first power reduction heating stage;

[0033] If the steam flow rate is within the first flow rate threshold and the second flow rate threshold, and the water weight difference is within the first weight threshold and the second weight threshold, determining that the current heating stage of the electric kettle is the second power reduction heating stage;

[0034] If the steam flow rate is within the second flow rate threshold and the third flow rate threshold, and the water weight difference is within the second weight threshold and the third weight threshold, it is determined that the current heating stage of the electric kettle is the third power reduction heating stage.

[0035] In an optional invention, the determining the target operating power associated with the current heating stage includes:

[0036] Determining that the target operating power associated with the first power reduction heating stage is the first operating power;

[0037] Determining that the target operating power associated with the second power reduction heating stage is a second operating power, wherein the maximum operating power is greater than the first operating power, and the first operating power is greater than the second operating power;

[0038] The target operating power associated with the third power reduction heating stage is determined to be a third operating power, wherein the maximum operating power is greater than the first operating power, and the first operating power is greater than the second operating power, and the second operating power is greater than the third operating power.

[0039] Based on the second aspect of the present invention, there is also provided a control device for an electric kettle, the electric kettle comprising a gas flow meter, a weight sensor, a heating component and a controller, the gas flow meter, the weight sensor and the heating component are electrically connected to the controller respectively, and the device comprises:

[0040] An instruction response module, used for starting the heating component in response to a heating instruction, and obtaining an initial weight detected by the weight sensor;

[0041] A data acquisition module, used to acquire the steam flow detected by the gas flow meter and the current weight detected by the weight sensor;

[0042] A difference calculation module, used for calculating the water weight difference according to the initial weight and the current weight;

[0043] a stage determination module, configured to determine a current heating stage of the electric kettle according to the steam flow rate and the water weight difference;

[0044] a power determination module, for determining a target operating power associated with the current heating stage, and controlling the heating component to operate according to the target operating power, so as to adjust a heating rate of the water in the electric kettle by the heating component;

[0045] The component control module is used to control the heating component to operate at the set boiling power for a set time and then stop when the target operating power is adjusted to the set boiling power.

[0046] Compared with the prior art, the present invention includes first responding to a heating instruction, starting the heating component, and obtaining the initial weight detected by the weight sensor. Then, the steam flow detected by the gas flowmeter and the current weight detected by the weight sensor are obtained, and the water weight difference is calculated based on the initial weight and the current weight. Then, the current heating stage of the electric kettle is determined based on the steam flow and the water weight difference. Finally, the target operating power associated with the current heating stage is determined. And when the target operating power is adjusted to the set boiling power, the heating component is controlled to run at the set boiling power for a set time and then stop. Therefore, the heating power of the heating component can be adjusted in stages to control the temperature according to the real-time steam flow and water weight changes, and the problem of dangerous situations caused by the temperature sensor used in the electric kettle being affected by the altitude can be avoided on the basis of energy saving.

[0047] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limitations of the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings.

[0049] In the attached picture:

[0050] Figure 1 It is a schematic flow chart of the steps of a control method of an electric kettle provided by an embodiment of the present invention;

[0051] Figure 2 is a block diagram of an electrical connection structure of a controller provided by an embodiment of the present invention;

[0052] Figure 3 is a schematic flow chart of steps of another method for controlling an electric kettle provided by an embodiment of the present invention;

[0053] Figure 4 It is a structural schematic diagram of a control device for an electric kettle provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0054] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0055] At present, smart electric kettles generally use built-in or external temperature sensors to collect the internal temperature of the kettle to control the on and off of the heating module. For example, when the temperature sensor detects that the temperature reaches 100 degrees or remains stable for a long time, it means that the electric kettle is in a boiling state and the heating module is cut off.

[0056] However, the above control method is greatly affected by altitude factors. For example, low air pressure will cause the temperature response time of the temperature sensor to slow down, making it time-consuming to rely on the temperature sensor to determine whether the electric kettle is in a boiling state, which can easily cause dangerous situations such as continuous heating of boiling water and overflow, circuit short circuit, etc.

[0057] Based on the above technical problems, an embodiment of the present invention is proposed. The embodiment of the present invention may include first responding to a heating instruction, starting the heating component, and obtaining the initial weight detected by the weight sensor. Then, the steam flow detected by the gas flowmeter and the current weight detected by the weight sensor are obtained, and the water weight difference is calculated based on the initial weight and the current weight. Then, the current heating stage of the electric kettle is determined based on the steam flow and the water weight difference. Finally, the target operating power associated with the current heating stage is determined. And when the target operating power is adjusted to the set boiling power, the heating component is controlled to stop after running at the set boiling power for a set period of time. Therefore, the heating power of the heating component can be adjusted in stages to control the temperature according to the real-time steam flow and water weight changes, and the problem of dangerous situations caused by the temperature sensor used in the electric kettle being affected by the altitude can be avoided on the basis of saving energy.

[0058] Reference Figure 1 , shows a control method of an electric kettle provided by an embodiment of the present invention, the method may include:

[0059] S101 . In response to a heating instruction, start the heating component and obtain an initial weight detected by the weight sensor.

[0060] In the embodiment of the present invention, referring to Figure 2As shown, the electric kettle includes a gas flow meter 201, a weight sensor 202, a heating component 203 and a controller 204, and the gas flow meter 201, the weight sensor 202 and the heating component 203 are respectively electrically connected to the controller 204. The gas flow meter 201 can be installed inside the lid of the electric kettle, and is mainly used to detect the steam flow generated during the heating process of water, and transmit the detected steam flow to the controller 204. The weight sensor 202 can be installed at the bottom of the inner pot of the electric kettle to detect the weight of the inner pot of the electric kettle and the water in the inner pot, and transmit the detected weight to the controller 204.

[0061] The heating instruction may be generated based on a trigger of a pressure touch action on a heating button, or may be generated based on a trigger of a touch operation on a heating control in a display interface. When a user wants to get boiled water, the heating instruction may be input, and the controller starts the heating component in response to the heating instruction. When the heating component is started, the heating component may be operated at the maximum operating power of the heating component, thereby heating the water in the electric kettle with the maximum heating efficiency and shortening the heating time as much as possible.

[0062] When the heating component is started, the controller can also obtain the initial weight detected by the weight sensor. In other words, the initial weight can be understood as the cumulative weight of the weight of the inner container and the weight of the water put into the inner container.

[0063] S102: Acquire the steam flow detected by the gas flow meter and the current weight detected by the weight sensor.

[0064] In the embodiment of the present invention, during the water heating process, the controller may also periodically receive the steam flow rate detected by the gas flow meter and the current weight detected by the weight sensor. Those skilled in the art may determine the specific acquisition time interval based on actual test results. For example, the acquisition time interval may be 5S, 10S, 15S, etc., which is not limited here.

[0065] S103, calculating a water weight difference based on the initial weight and the current weight.

[0066] In the embodiment of the present invention, considering that during the water heating process, its boiling will generate steam, thereby reducing the weight of the water, therefore, after the controller obtains the current weight detected by the weight sensor, the current weight can be subtracted from the initial weight, thereby obtaining the water weight difference between the current heating moment and the initial heating moment. When the water weight difference is zero or the water weight difference is very small (within the error range allowed by the detection), it is determined that the current water is being heated and is not boiling.

[0067] S104: Determine the current heating stage of the electric kettle according to the steam flow rate and the water weight difference.

[0068] In the embodiment of the present invention, it is considered that the electric kettle may generate uncertainty in the detection value when it is impacted by external force. Steam is generated when water boils. Therefore, the current heating stage of the electric kettle can also be determined in combination with the steam flow rate. For example, when there is no steam flow rate or no water weight difference, it means that the water is not boiling at this time and the temperature is low. At this time, the heating component can continue to operate at the maximum operating power, so as to quickly heat the water.

[0069] Considering that there is a certain difference between the steam flow rate and the water weight, it is determined that the water has begun to vaporize and has a higher temperature. At this time, the heating power of the heating component can be reduced, thereby achieving a double effect of rapid boiling and energy saving.

[0070] In some implementations, when the steam flow rate does not meet the preset flow rate condition, or the water weight difference does not meet the preset difference condition, the current heating stage of the electric kettle is determined to be a constant heating stage. Wherein, the preset flow rate condition at least includes: the steam flow rate is greater than or equal to the preset flow rate threshold. The preset difference condition at least includes: the water weight difference is greater than or equal to the preset difference threshold. Those skilled in the art can determine the specific preset flow rate threshold and preset difference threshold according to actual design requirements. For example, the preset flow rate threshold can be zero, the preset difference threshold can be zero, etc., and no excessive restrictions are made here.

[0071] When the steam flow rate does not meet the preset flow rate condition, or the water weight difference does not meet the preset difference condition, it is determined that the water in the electric kettle is not boiling and the temperature is low. At this time, the heating component can continue to operate at the maximum operating power, so as to quickly heat the water. The stage in which the heating component needs to continue to operate at the maximum operating power can be used as a constant heating stage, that is, in the constant heating stage, the heating component always operates at the maximum operating power to quickly heat the water.

[0072] In other embodiments, when the steam flow rate meets the preset flow rate condition and the water weight difference meets the preset difference condition, it is determined that the water has begun to vaporize and has a high temperature, and the heating power of the heating component can be reduced to achieve the dual effects of rapid boiling and energy saving. The heating stage in which the heating power of the heating component needs to be reduced is used as a variable power heating stage.

[0073] S105: Determine a target operating power associated with the current heating stage, and control the heating component to operate according to the target operating power.

[0074] In an embodiment of the present invention, when the current heating stage is a constant heating stage, the corresponding target operating power is the maximum operating power, so that the heating component can be kept operating at the maximum operating power to quickly heat up the water in the electric kettle.

[0075] When the current heating stage is a variable power heating stage, the corresponding target operating power may include at least two, and any one of the target operating powers corresponding to the variable power heating stage is respectively less than the maximum operating power, so that when it is determined that the water in the electric kettle has a higher temperature, the heating power of the heating component can be gradually reduced, so as to reduce the heating rate of the water in the electric kettle by reducing the heating power of the heating component while ensuring that the water is fully boiled (manifested as reducing the water temperature rise rate). In this way, it is possible to avoid the situation where the water temperature rises too quickly and boils violently, resulting in a reduction in the amount of boiled water and heat waste, and to achieve precise temperature control and energy saving.

[0076] S106. When the target operating power is adjusted to the set boiling power, the heating component is controlled to operate at the set boiling power for a set time and then stop.

[0077] In an embodiment of the present invention, the set boiling power may be a preset minimum operating power. For example, the set boiling power may be the minimum target operating power corresponding to the variable power heating stage, etc. When the target operating power is adjusted to the set boiling power, it can be determined that the water temperature reaches the highest (that is, it can be understood as reaching the boiling point), and the set duration is used to determine the duration of operation when the temperature of the water in the electric kettle reaches the boiling point and the water temperature is completely stable. For example, the set duration may be between 1 and 100S. Those skilled in the art can determine the specific set duration based on actual test results, and will not be overly limited here. Thus, the controller can control the heating component to run the set duration according to the set boiling power, and then stop the heating component to determine that the water heating is finished. At this time, the water in the electric kettle has fully boiled, and the temperature in the kettle is the same everywhere.

[0078] The embodiments of the present invention can also avoid the problem that when a gas flow meter is used alone to detect changes in steam flow, it is easily interfered by environmental humidity and abnormal opening of the lid. It can also avoid the problem that when a weight sensor is used alone to detect changes in the weight of the kettle body, it is easily interfered by weight changes caused by abnormal impacts. According to the real-time steam flow and water weight changes, the heating power of the heating component is adjusted in stages to control the temperature. On the basis of saving energy, the problem of dangerous situations caused by the influence of altitude on the temperature sensor used in the electric kettle can be avoided.

[0079] Reference Figure 3 , shows another control method of an electric kettle provided by an embodiment of the present invention, the method may include:

[0080] S301. In response to a heating instruction, start the heating component and obtain an initial weight detected by the weight sensor.

[0081] In the embodiment of the present invention, referring to Figure 2 As shown, the electric kettle includes a gas flow meter, a weight sensor, a heating component and a controller, and the gas flow meter, the weight sensor and the heating component are electrically connected to the controller respectively. The gas flow meter can be installed inside the lid of the electric kettle, and is mainly used to detect the steam flow generated during the heating process of water, and transmit the detected steam flow to the controller. The weight sensor can be installed at the bottom of the inner pot of the electric kettle to detect the weight of the inner pot of the electric kettle and the water in the inner pot.

[0082] The heating instruction may be generated based on a trigger of a pressure touch action on a heating button, or may be generated based on a trigger of a touch operation on a heating control in a display interface. When a user wants to get boiled water, the heating instruction may be input, and the controller starts the heating component in response to the heating instruction. When the heating component is started, the heating component may be operated at the maximum operating power of the heating component, thereby heating the water in the electric kettle with the maximum heating efficiency and shortening the heating time as much as possible.

[0083] When the heating component is started, the controller can also obtain the initial weight detected by the weight sensor. In other words, the initial weight can be understood as the cumulative weight of the weight of the inner container and the weight of the water put into the inner container.

[0084] S302: Obtain the steam flow detected by the gas flow meter and the current weight detected by the weight sensor.

[0085] In the embodiment of the present invention, during the water heating process, the controller may also periodically receive the steam flow rate detected by the gas flow meter and the current weight detected by the weight sensor. Those skilled in the art may determine the specific acquisition time interval based on actual test results. For example, the acquisition time interval may be 5S, 10S, 15S, etc., which is not limited here.

[0086] S303: Calculate the water weight difference based on the initial weight and the current weight.

[0087] In the embodiment of the present invention, considering that during the water heating process, its boiling will generate steam, thereby reducing the weight of the water, therefore, after the controller obtains the current weight detected by the weight sensor, the current weight can be subtracted from the initial weight, thereby obtaining the water weight difference between the current heating moment and the initial heating moment. When the water weight difference is zero or the water weight difference is very small (within the error range allowed by the detection), it is determined that the current water is being heated and is not boiling.

[0088] S304, determining whether the following two conditions are simultaneously met: the steam flow rate meets a preset flow rate condition, and the water weight difference meets a preset difference condition.

[0089] In the embodiment of the present invention, it is considered that the electric kettle may generate uncertainty in the detection value when it is impacted by external force. Steam is generated when water boils. Therefore, the current heating stage of the electric kettle can also be determined in combination with the steam flow rate. For example, when there is no steam flow rate or no water weight difference, it means that the water is not boiling at this time and the temperature is low. At this time, the heating component can continue to operate at the maximum operating power, so as to quickly heat the water.

[0090] Considering that there is a certain difference between the steam flow rate and the water weight, it is determined that the water has begun to vaporize and has a higher temperature. At this time, the heating power of the heating component can be reduced, thereby achieving a double effect of rapid boiling and energy saving.

[0091] In some implementations, when the steam flow rate does not meet the preset flow rate condition, or the water weight difference does not meet the preset difference condition, the current heating stage of the electric kettle is determined to be a constant heating stage. Wherein, the preset flow rate condition at least includes: the steam flow rate is greater than or equal to the preset flow rate threshold. The preset difference condition at least includes: the water weight difference is greater than or equal to the preset difference threshold. Those skilled in the art can determine the specific preset flow rate threshold and preset difference threshold according to actual design requirements. For example, the preset flow rate threshold can be zero, the preset difference threshold can be zero, etc., and no excessive restrictions are made here.

[0092] When the steam flow rate does not meet the preset flow rate condition, or the water weight difference does not meet the preset difference condition, it is determined that the water in the electric kettle is not boiling and the temperature is low. At this time, the heating component can continue to operate at the maximum operating power to quickly heat the water. The stage in which the heating component needs to continue to operate at the maximum operating power can be used as a constant heating stage, that is, in the constant heating stage, the heating component always operates at the maximum operating power P0 to quickly heat the water, so that step S302 can be repeatedly executed, that is, the steam flow detection and the current weight detection are continued.

[0093] In other embodiments, when the steam flow rate meets the preset flow rate condition and the water weight difference meets the preset difference condition, it is determined that the water has begun to vaporize and has a relatively high temperature. At this time, the heating power of the heating component can be reduced, so as to achieve the dual effect of rapid boiling and energy saving. Therefore, the heating stage in which the heating power of the heating component needs to be reduced can be used as a variable power heating stage, wherein the variable power heating stage can include at least two stages, for example, a first power reduction heating stage and a second power reduction heating stage. This can avoid the situation in which the water temperature is high and high power heating is continued, causing the boiling water to boil over too quickly, and causing waste of electric energy, excessive reduction of water volume, etc.

[0094] S305: If the steam flow rate is less than a first flow rate threshold, and the water weight difference is less than a first weight threshold, determine that the current heating stage of the electric kettle is a first power reduction heating stage.

[0095] In an embodiment of the present invention, the first flow threshold may be a flow threshold corresponding to the initial water volume heated to the first temperature threshold. The first weight threshold may be the weight of water reduced by the initial water volume heated to the first temperature threshold. For example, the first temperature threshold may be 85 degrees Celsius or 90 degrees Celsius or the like. When the steam flow satisfies the preset flow condition and the water weight difference satisfies the preset difference condition, if the steam flow is less than the first flow threshold and the water weight difference is less than the first weight threshold, it can be determined that the water at this time has begun to vaporize and has a higher temperature. In a conventional altitude environment, it can be characterized that the temperature of the water in the electric kettle is close to the first temperature threshold. In an environment with a higher altitude, it can be determined that the water temperature at this time is higher and close to the boiling point (the boiling point temperature is less than the first temperature threshold). Thus, it can be determined that the current heating stage of the electric kettle is the first power reduction heating stage.

[0096] S306: If the steam flow rate is within the first flow rate threshold and the second flow rate threshold, and the water weight difference is within the first weight threshold and the second weight threshold, determine that the current heating stage of the electric kettle is the second power reduction heating stage.

[0097] In an embodiment of the present invention, the second flow threshold may be a flow threshold corresponding to the initial water volume heated to the second temperature threshold. The second weight threshold may be the weight of water reduced by heating the initial water volume to the second temperature threshold. For example, the second temperature threshold may be 90 degrees Celsius or 95 degrees Celsius or the like. When the steam flow satisfies the preset flow condition and the water weight difference satisfies the preset difference condition, if the steam flow is within the first flow threshold and the second flow threshold, and the water weight difference is within the first weight threshold and the second weight threshold. In a conventional altitude environment, it can be characterized that the temperature of the water in the electric kettle is close to the second temperature threshold. In an environment with a higher altitude, it can be determined that the water temperature at this time is higher and further close to the boiling point (the boiling point temperature is less than the first temperature threshold). Thus, it can be determined that the current heating stage of the electric kettle is the second power reduction heating stage.

[0098] In some embodiments, the steam flow rate is within the first flow rate threshold and the second flow rate threshold, which can be understood as the steam flow rate being greater than or equal to the first flow rate threshold and less than the second flow rate threshold. Thus, the lower limit threshold can be included, and the upper limit threshold is not included. By analogy, the water weight difference is within the first weight threshold and the second weight threshold, which can be understood as the water weight difference being greater than or equal to the first weight threshold and less than the second weight threshold.

[0099] In other embodiments, the variable power heating stage may include at least three heating stages, for example, a first power reduction heating stage, a second power reduction heating stage, and a third power reduction heating stage, etc.

[0100] Correspondingly, a third flow threshold may be set above the second flow threshold, and a third flow threshold may be set above the second weight threshold. If the steam flow is within the second flow threshold and the third flow threshold, and the water weight difference is within the second weight threshold and the third weight threshold, it is determined that the current heating stage of the electric kettle is the third power reduction heating stage. Correspondingly, the third flow threshold may be the flow threshold corresponding to when the initial amount of water is heated to the boiling point, and the fourth flow threshold may be the weight of water reduced when the initial amount of water is heated to the boiling point. For example, in a normal altitude environment, the boiling point of water is 100 degrees Celsius.

[0101] When the steam flow satisfies the preset flow condition and the water weight difference satisfies the preset difference condition, if the steam flow is within the second flow threshold and the third flow threshold, and the water weight difference is within the second weight threshold and the third weight threshold, it can be determined that the current water temperature is close to the boiling point, and the heating power can be further reduced to achieve precise temperature control on the basis of energy saving.

[0102] S307: Determine a target operating power associated with the current heating stage, and control the heating component to operate according to the target operating power.

[0103] In the embodiment of the present invention, a mapping relationship between different heating stages and operating powers can be pre-established, so that the corresponding operating powers can be matched according to the mapping relationship and the current heating stage, and used as the target operating powers. For example, the operating power associated with the first power reduction heating stage is the first operating power P1, and the operating power associated with the second power reduction heating stage is the second power P2.

[0104] In some embodiments, the method further comprises a first step of determining the first operating power, the first step comprising first determining the total amount of water in the electric kettle according to the initial weight, then matching the target steam flow associated with the boiling point of the water according to the total amount of water, and finally determining the first operating power according to the target steam flow, the steam flow and a first weighting coefficient.

[0105] In an embodiment of the present invention, the total amount of water in the electric kettle can be obtained by subtracting the weight of the inner tank when no water is added from the initial weight detected by the weight sensor. Considering that the amount of water added by the user during use is different, the corresponding steam flow rate generated when boiling will also be different. Therefore. In a conventional environment, the steam flow rate when different amounts of water reach the boiling point can be pre-tested, and the flow correlation relationship between the water amount and the steam flow rate can be established, as shown in the following Table 1:

[0106] Table 1 Traffic correlation table

[0107]

[0108] After determining the total amount of water in the electric kettle, the steam flow associated with the water reaching the boiling point based on the current total amount of water is matched according to the flow correlation relationship in the above table and used as the target steam flow.

[0109] During the water heating process, the first operating power of the electric kettle when it is in the first power reduction stage can be determined by the steam flow difference between the current steam flow and the target steam flow. For example, the target steam flow is the maximum steam flow during the heating process, so the target steam flow can be subtracted from the current steam flow to obtain the steam flow difference. Among them, the steam flow difference is a value greater than 1. The first weighting coefficient K1 can be a constant value less than 0.5 and greater than 0. Therefore, the K1 power of the steam flow difference is a flow weighted value greater than 1. Therefore, the operating power corresponding to the current heating stage can be obtained by dividing the operating power corresponding to the previous heating stage by the flow weighted value. For example, the first operating power P1 can be the value obtained by dividing the maximum operating power P0 by the flow weighted value and rounding it.

[0110] In some other embodiments, the method further comprises a first step of determining the first operating power, the first step comprising first determining the total amount of water in the electric kettle according to the initial weight, then matching the target weight difference associated with the boiling point of the water according to the total amount of water, and finally determining the first operating power according to the target weight difference, the water weight difference and a first weighting coefficient.

[0111] In the embodiment of the present invention, considering that the amount of water added by the user during use is different, the corresponding water weight difference generated when boiling will also be different. Therefore, the water weight difference when different amounts of water reach the boiling point can be pre-tested in a conventional environment, and a weight correlation relationship between the water amount and the water weight difference can be established, as shown in the following Table 2:

[0112] Table 2 Weight association table

[0113]

[0114] After determining the total amount of water in the electric kettle, the weight difference of water associated with the boiling point based on the current total amount of water is matched according to the weight association relationship in Table 2 and used as the target weight flow rate.

[0115] During the water heating process, the first operating power of the electric kettle when it is in the first power reduction stage can be determined by the weight difference between the current water weight difference and the target weight difference. For example, the target weight difference is the maximum water weight difference during the heating process, so the target weight difference minus the current water weight difference can be used to obtain the weight difference. Among them, the weight difference is a value greater than 1. The first weighting coefficient K1 can be a constant value less than 0.5 and greater than 0. Thus, the K1 power of the weight difference is a weight-weighted value greater than 1. Thus, the operating power corresponding to the previous heating stage can be divided by the weight-weighted value to obtain the operating power corresponding to the current heating stage. For example, the first operating power P1 can be the value obtained by dividing the maximum operating power P0 by the weight-weighted value.

[0116] According to the above logic, the second operating power can be determined based on the steam flow difference and the second weighting coefficient K2. Or, it can be determined based on the weight difference and the second weighting coefficient K2. Among them, the second weighting coefficient K2 can be a constant value that is less than the first weighting coefficient K1 and greater than 0. Therefore, the operating power corresponding to the current heating stage can be obtained by dividing the operating power corresponding to the previous heating stage by the weighted value. The second operating power P2 can be the first operating power P1 divided by the weighted value and rounded. For another example, the operating power corresponding to the current heating stage can be obtained by dividing the operating power corresponding to the previous heating stage by the flow weighted value. The second operating power P2 can be the first operating power P1 divided by the flow weighted value and rounded.

[0117] In other embodiments, when the variable power heating stage includes a third operating power, the third operating power may be determined based on the steam flow difference and the third weighting coefficient K3. Alternatively, it may be determined based on the weight difference and the third weighting coefficient K3. Wherein, the third weighting coefficient K3 may be a constant value that is less than the second weighting coefficient K2 and greater than 0. Thus, the operating power corresponding to the current heating stage may be obtained by dividing the operating power corresponding to the previous heating stage by the weighted value. The third operating power P3 may be the value obtained by dividing the second operating power P2 by the weighted value. For another example, the operating power corresponding to the current heating stage may be obtained by dividing the operating power corresponding to the previous heating stage by the flow weighted value. The third operating power P3 may be the value obtained by dividing the second operating power P2 by the flow weighted value.

[0118] S308: When the target operating power is adjusted to the set boiling power, the heating component is controlled to operate at the set boiling power for a set time and then stop.

[0119] In an embodiment of the present invention, the set boiling power may be a preset minimum operating power. Thus, on the basis of energy saving, it can be determined that the temperature of the water after boiling is constant, which can also be understood as the temperature of the water in the electric kettle being the same everywhere. When the target operating power drops to the set boiling power, it can be determined that the current water temperature has reached the boiling point, and after the heating component is controlled to operate for a set time according to the set boiling power, the operation of the heating component is stopped, and at this time, it is determined that the heating of the water is terminated. Among them, the set time is used to determine the operating time when the temperature of the water in the electric kettle reaches the boiling point and the water temperature is completely stable. The set time can be a time interval between 1S and 100S. For example, the set time can be 5S, 10S, 50S, and 80S, etc., which are not limited too much here.

[0120] The embodiments of the present invention can also avoid the problem of being easily disturbed by environmental humidity and abnormal opening of the lid when using a gas flow meter alone to detect changes in steam flow. It can also avoid the problem of being easily disturbed by weight changes caused by abnormal impacts when using a weight sensor alone to detect changes in the weight of the kettle body. According to the real-time steam flow and water weight changes, the heating power of the heating component is adjusted in stages to control the temperature. On the basis of saving energy, it can avoid the problem of dangerous situations caused by the influence of altitude on the temperature sensor used in the electric kettle. In addition, the embodiments of the present invention can also solve the problem of difficult precise temperature control of traditional ceramic kettles and cast iron kettles that cannot be equipped with temperature sensing packages.

[0121] The embodiment of the present invention discloses a control method for an electric kettle, which may include first responding to a heating instruction, starting the heating component, and obtaining the initial weight detected by the weight sensor. Then, the steam flow detected by the gas flowmeter and the current weight detected by the weight sensor are obtained, and the water weight difference is calculated based on the initial weight and the current weight. Then, the current heating stage of the electric kettle is determined based on the steam flow and the water weight difference. Finally, the target operating power associated with the current heating stage is determined. And when the target operating power is adjusted to the set boiling power, the heating component is controlled to stop after running at the set boiling power for a set period of time. Therefore, the heating power of the heating component can be adjusted in stages to control the temperature according to the real-time steam flow and water weight changes, and the problem of dangerous situations caused by the temperature sensor used in the electric kettle being affected by the altitude can be avoided on the basis of saving energy.

[0122] It should be noted that, for the method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present application are not limited by the described order of actions, because according to the embodiments of the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present application.

[0123] Reference Figure 4 , shows a control device for an electric kettle provided by an embodiment of the present invention, the control device may include:

[0124] The instruction response module 401 is used to start the heating component in response to the heating instruction and obtain the initial weight detected by the weight sensor.

[0125] The data acquisition module 402 is used to acquire the steam flow detected by the gas flow meter and the current weight detected by the weight sensor.

[0126] The difference calculation module 403 is used to calculate the water weight difference based on the initial weight and the current weight.

[0127] The stage determination module 404 is used to determine the current heating stage of the electric kettle according to the steam flow rate and the water weight difference.

[0128] The power determination module 405 is used to determine the target operating power associated with the current heating stage, and control the heating component to operate according to the target operating power to adjust the heating rate of the heating component on the water in the electric kettle.

[0129] The component control module 406 is used to control the heating component to operate at the set boiling power for a set time and then stop when the target operating power is adjusted to the set boiling power.

[0130] In an optional embodiment of the invention, the stage determination module 404 may include:

[0131] The constant heating determination submodule is used to determine that the current heating stage of the electric kettle is a constant heating stage when the steam flow rate does not meet the preset flow rate condition or when the water weight difference does not meet the preset difference condition.

[0132] The variable power heating determination submodule is used to determine that the current heating stage of the electric kettle is the variable power heating stage when the steam flow meets the preset flow condition and the water weight difference meets the preset difference condition.

[0133] In an optional embodiment of the invention, the power determination module 405 is further configured to determine that the target operating power associated with the constant heating stage is the maximum operating power.

[0134] In an optional embodiment of the invention, the variable power heating stage includes at least a first power reduction heating stage and a second power reduction heating stage, and the variable power heating determination submodule may include:

[0135] The first heating unit is used to determine that the current heating stage of the electric kettle is the first reduced-power heating stage when the steam flow meets a preset flow condition and the water weight difference meets a preset difference condition, if the steam flow is less than a first flow threshold and the water weight difference is less than a first weight threshold.

[0136] The second heating unit is used to determine that the current heating stage of the electric kettle is the second reduced-power heating stage if the steam flow rate is within the first flow rate threshold and the second flow rate threshold, and the water weight difference is within the first weight threshold and the second weight threshold.

[0137] In an optional embodiment of the invention, the power determination module 405 is further configured to:

[0138] Determining that the target operating power associated with the first power reduction heating stage is the first operating power;

[0139] The target operating power associated with the second power reduction heating stage is determined to be a second operating power, wherein the maximum operating power is greater than the first operating power, and the first operating power is greater than the second operating power.

[0140] In an optional embodiment of the invention, the device may further include a first module for determining the first operating power, wherein the first module is configured to:

[0141] Based on the initial weight, the total amount of water in the electric kettle is determined, and the target steam flow associated with the boiling point of the water is matched according to the total amount of water, and the first operating power is determined based on the target steam flow, the steam flow and the first weighting coefficient.

[0142] In an optional embodiment of the invention, the device further includes a first module for determining the first operating power, wherein the first module is configured to:

[0143] The total amount of water in the electric kettle is determined based on the initial weight, and the target weight difference associated with the boiling point of the water is matched according to the total amount of water. The first operating power is determined based on the target weight difference, the water weight difference and the first weighting coefficient.

[0144] In an optional embodiment of the invention, the variable power heating stage includes at least a first power reduction heating stage, a second power reduction heating stage and a third power reduction heating stage, and the variable power heating determination submodule may include:

[0145] The first heating unit is used to determine that the current heating stage of the electric kettle is the first reduced-power heating stage when the steam flow meets a preset flow condition and the water weight difference meets a preset difference condition, if the steam flow is less than a first flow threshold and the water weight difference is less than a first weight threshold.

[0146] The second heating unit is used to determine that the current heating stage of the electric kettle is the second reduced-power heating stage if the steam flow rate is within the first flow rate threshold and the second flow rate threshold, and the water weight difference is within the first weight threshold and the second weight threshold.

[0147] The third heating unit is used to determine that the current heating stage of the electric kettle is the third power reduction heating stage if the steam flow rate is within the second flow rate threshold and the third flow rate threshold, and the water weight difference is within the second weight threshold and the third weight threshold.

[0148] In an optional embodiment of the invention, the power determination module 405 is further configured to:

[0149] The target operating power associated with the first power reduction heating stage is determined to be the first operating power.

[0150] The target operating power associated with the second power reduction heating stage is determined to be a second operating power, wherein the maximum operating power is greater than the first operating power, and the first operating power is greater than the second operating power.

[0151] The target operating power associated with the third power reduction heating stage is determined to be a third operating power, wherein the maximum operating power is greater than the first operating power, and the first operating power is greater than the second operating power, and the second operating power is greater than the third operating power.

[0152] In summary, an embodiment of the present invention discloses a control device for an electric kettle, and the control device may include first responding to a heating instruction, starting the heating component, and obtaining the initial weight detected by the weight sensor. Then, the steam flow detected by the gas flowmeter and the current weight detected by the weight sensor are obtained, and the water weight difference is calculated based on the initial weight and the current weight. Then, the current heating stage of the electric kettle is determined based on the steam flow and the water weight difference. Finally, the target operating power associated with the current heating stage is determined. And when the target operating power is adjusted to the set boiling power, the heating component is controlled to stop after running at the set boiling power for a set period of time. Therefore, the heating power of the heating component can be adjusted in stages to control the temperature according to the real-time steam flow and water weight changes, and the problem of dangerous situations caused by the influence of altitude on the temperature sensor used in the electric kettle can be avoided on the basis of saving energy.

[0153] The embodiment of the present invention further discloses a controller, including:

[0154] one or more processors;

[0155] Memory;

[0156] One or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs are configured to execute the method described in the above embodiment.

[0157] The embodiment of the present invention further discloses an electric kettle, which comprises the controller described in the above embodiment.

[0158] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0159] It is easy for a person skilled in the art to think that any combination of the above embodiments is feasible, so any combination of the above embodiments is an implementation scheme of the present invention. However, due to space limitations, this specification will not describe them in detail here.

[0160] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0161] Similarly, it should be understood that in order to streamline the present invention and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the intention that the claimed invention requires more features than those expressly recited in each claim. Rather, as reflected in the claims, inventive aspects lie in less than all of the features of the individual embodiments previously disclosed. Therefore, the claims that follow the detailed description are hereby expressly incorporated into the detailed description, with each claim itself serving as a separate embodiment of the present invention.

[0162] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and in addition they may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and / or processes or units are mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this manner may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0163] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0164] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0165] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0166] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0167] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0168] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0169] The control method and the control device of an electric kettle provided by the present invention are introduced in detail above. The principle and implementation mode of the present invention are explained in detail by using specific examples. The description of the above embodiments is only used to help understand the method and the core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation mode and the scope of application. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A method for controlling an electric kettle, characterized in that: The electric kettle comprises a gas flow meter, a weight sensor, a heating component and a controller, wherein the gas flow meter, the weight sensor and the heating component are electrically connected to the controller respectively, and the method comprises: In response to a heating instruction, starting the heating component and acquiring an initial weight detected by the weight sensor; Acquire the steam flow rate detected by the gas flow meter and the current weight detected by the weight sensor; Calculating a water weight difference based on the initial weight and the current weight; determining a current heating stage of the electric kettle according to the steam flow rate and the water weight difference; determining a target operating power associated with the current heating stage, and controlling the heating component to operate according to the target operating power to adjust a heating rate of the water in the electric kettle by the heating component; When the target operating power is adjusted to the set boiling power, the heating component is controlled to operate at the set boiling power for a set time and then stop.

2. The control method of the electric kettle according to claim 1, characterized in that: The step of determining the current heating stage of the electric kettle according to the steam flow rate and the water weight difference comprises: When the steam flow rate does not meet the preset flow rate condition, or when the water weight difference does not meet the preset difference condition, determining that the current heating stage of the electric kettle is a constant heating stage; When the steam flow rate meets the preset flow rate condition and the water weight difference meets the preset difference condition, it is determined that the current heating stage of the electric kettle is the variable power heating stage.

3. The control method of the electric kettle according to claim 2, characterized in that: The determining the target operating power associated with the current heating stage includes: The target operating power associated with the constant heating stage is determined to be the maximum operating power.

4. The control method of the electric kettle according to claim 2, characterized in that: The variable power heating stage includes at least a first power reduction heating stage and a second power reduction heating stage, and when the steam flow rate meets a preset flow rate condition and the water weight difference meets a preset difference condition, determining that the current heating stage of the electric kettle is a variable power heating stage includes: When the steam flow rate satisfies a preset flow rate condition and the water weight difference satisfies a preset difference condition, if the steam flow rate is less than a first flow rate threshold and the water weight difference is less than a first weight threshold, determining that the current heating stage of the electric kettle is a first power reduction heating stage; If the steam flow rate is within the first flow rate threshold and the second flow rate threshold, and the water weight difference is within the first weight threshold and the second weight threshold, it is determined that the current heating stage of the electric kettle is the second power reduction heating stage.

5. The control method of the electric kettle according to claim 4, characterized in that: The determining the target operating power associated with the current heating stage includes: Determining that the target operating power associated with the first power reduction heating stage is the first operating power; The target operating power associated with the second power reduction heating stage is determined to be a second operating power, wherein the maximum operating power is greater than the first operating power, and the first operating power is greater than the second operating power.

6. The control method of the electric kettle according to claim 5, characterized in that: The method further comprises a first step of determining the first operating power, the first step comprising: Determining the total amount of water in the electric kettle based on the initial weight; Matching the target steam flow rate associated with the water reaching the boiling point according to the total amount of water; The first operating power is determined according to the target steam flow rate, the steam flow rate and a first weighting coefficient.

7. The control method of the electric kettle according to claim 5, characterized in that: The method further comprises a first step of determining the first operating power, the first step comprising: Determining the total amount of water in the electric kettle based on the initial weight; Matching the target weight difference associated with the boiling point of the water according to the total amount of water; The first operating power is determined according to the target weight difference, the water weight difference and a first weighting coefficient.

8. The control method of the electric kettle according to claim 2, characterized in that: The variable power heating stage includes at least a first power reduction heating stage, a second power reduction heating stage and a third power reduction heating stage, and when the steam flow rate meets a preset flow rate condition and the water weight difference meets a preset difference condition, determining that the current heating stage of the electric kettle is a variable power heating stage includes: When the steam flow rate satisfies a preset flow rate condition and the water weight difference satisfies a preset difference condition, if the steam flow rate is less than a first flow rate threshold and the water weight difference is less than a first weight threshold, determining that the current heating stage of the electric kettle is a first power reduction heating stage; If the steam flow rate is within the first flow rate threshold and the second flow rate threshold, and the water weight difference is within the first weight threshold and the second weight threshold, determining that the current heating stage of the electric kettle is the second power reduction heating stage; If the steam flow rate is within the second flow rate threshold and the third flow rate threshold, and the water weight difference is within the second weight threshold and the third weight threshold, it is determined that the current heating stage of the electric kettle is the third power reduction heating stage.

9. The control method of the electric kettle according to claim 8, characterized in that: The determining the target operating power associated with the current heating stage includes: Determining that the target operating power associated with the first power reduction heating stage is the first operating power; Determining that the target operating power associated with the second power reduction heating stage is a second operating power, wherein the maximum operating power is greater than the first operating power, and the first operating power is greater than the second operating power; The target operating power associated with the third power reduction heating stage is determined to be a third operating power, wherein the maximum operating power is greater than the first operating power, and the first operating power is greater than the second operating power, and the second operating power is greater than the third operating power.

10. A control device for an electric kettle, characterized in that: The electric kettle comprises a gas flow meter, a weight sensor, a heating component and a controller, wherein the gas flow meter, the weight sensor and the heating component are electrically connected to the controller respectively, and the device comprises: An instruction response module, used for starting the heating component in response to a heating instruction, and obtaining an initial weight detected by the weight sensor; A data acquisition module, used to acquire the steam flow detected by the gas flow meter and the current weight detected by the weight sensor; A difference calculation module, used for calculating the water weight difference according to the initial weight and the current weight; a stage determination module, configured to determine a current heating stage of the electric kettle according to the steam flow rate and the water weight difference; a power determination module, for determining a target operating power associated with the current heating stage, and controlling the heating component to operate according to the target operating power, so as to adjust a heating rate of the water in the electric kettle by the heating component; The component control module is used to control the heating component to operate at the set boiling power for a set time and then stop when the target operating power is adjusted to the set boiling power.

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