Steam generation control method and device, steaming and baking machine and computer equipment

Abstract

The invention relates to a steam generation control method and device, a steaming and baking machine, computer equipment, a computer readable storage medium and a computer program product, and the method comprises the steps: obtaining a box body set temperature and a box body actual measurement temperature of the steaming and baking machine, and controlling a heating part of a steam generator to carry out heating according to the box body set temperature and the box body actual measurement temperature, and under the condition that the heating temperature of the heating component meets the preset temperature condition, the working state of a water pump of the steam generator is controlled. A box body of the steaming and baking machine is communicated with a steam generator, the steam generator comprises a water tank, a heating component and a water pump, the water tank is communicated with the heating component through a waterway channel, the water pump is arranged in the waterway channel and used for conveying water in the water tank to the heating component, the heating component evaporates water to generate steam, and the box body is used for collecting the steam. The steam generator is controlled according to the set temperature and the actually measured temperature, the heating component and the water pump are adjusted respectively, steam generation is accurately controlled, and the steam generation efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a steam generation control method, device, steam-bake machine, computer equipment, computer-readable storage medium and computer program product. Background Art

[0002] As people's living standards improve, their demands for quality of life are also getting higher and higher, and different household appliances that facilitate life have been developed accordingly. In the kitchen, steam ovens, as the main kitchen appliances, provide many conveniences for family life. You can use the steaming function to cook food and expand your recipes. The steaming method is also conducive to reducing the loss of food nutrients.

[0003] In recent years, different types of steam ovens have emerged one after another, but most steam ovens currently use traditional water-boiling steam generation technology, which is similar to boiling water to generate steam to steam food. However, this method requires heating the water tank, consumes a lot of power, and takes a long time to heat up to generate steam, resulting in low steam generation efficiency. Summary of the invention

[0004] Based on this, it is necessary to provide a steam generation control method, device, steam-bake machine, computer equipment, computer-readable storage medium and computer program product that can improve the steam generation efficiency in response to the above technical problems.

[0005] In a first aspect, the present application provides a steam generation control method, the method comprising:

[0006] Obtaining a set temperature and a measured temperature of a box of a steam-bake machine; the box of the steam-bake machine is connected to a steam generator of the steam-bake machine;

[0007] The heating component of the steam generator is controlled to heat according to the set temperature of the box and the measured temperature of the box; the steam generator comprises a water tank, the heating component and a water pump, the water tank is connected to the heating component through a water channel, and the water pump is arranged in the water channel;

[0008] When the heating temperature of the heating component meets the preset temperature condition, the working state of the water pump of the steam generator is controlled; the water pump is used to transfer the water in the water tank to the heating component, the heating component evaporates the water to generate steam, and the box is used to collect the steam.

[0009] In one embodiment, controlling the heating component of the steam generator to heat according to the set temperature of the box and the measured temperature of the box includes:

[0010] Determining an initial heating mode of the heating component based on the set temperature of the cabinet;

[0011] controlling the heating component to heat according to the initial heating mode;

[0012] When the measured temperature of the box body obtained in real time meets a first switching condition, determining the advanced heating mode of the heating component; the first switching condition corresponds to the set temperature of the box body;

[0013] The heating component is controlled to perform heating according to the advanced heating mode.

[0014] In one embodiment, after controlling the heating component to heat according to the advanced heating mode, the method further includes:

[0015] When the actual temperature of the cabinet obtained in real time meets a second switching condition, it is determined that the heating component is switched from the advanced heating mode to the initial heating mode; the second switching condition corresponds to the set temperature of the cabinet.

[0016] In one embodiment, controlling the heating component to heat according to the advanced heating mode includes:

[0017] Determine the cycle duty cycle according to the box set temperature and the box measured temperature;

[0018] A heating signal is output based on a periodic duty cycle to control the heating component to perform heating.

[0019] In one embodiment,

[0020] When the box set temperature is in the first temperature range, the first switching condition includes: the box measured temperature is greater than or equal to the difference between the box set temperature and a fixed value, or the box measured temperature is higher than the lower limit of the first temperature range and lower than the box set temperature within a preset time period;

[0021] When the box set temperature is in the second temperature range, the first switching condition includes: the measured box temperature is greater than or equal to the difference between the box set temperature and a fixed value;

[0022] When the box set temperature is in the third temperature range, the first switching condition includes: the heating component is in the initial heating mode;

[0023] The lower limit value of the first temperature interval is greater than the upper limit value of the second temperature interval, and the lower limit value of the second temperature interval is greater than the upper limit value of the third temperature interval.

[0024] In one embodiment, the second switching condition includes:

[0025] The actually measured temperature of the box is less than or equal to the difference between the set temperature of the box and a fixed value, and the set temperature of the box is not in the third temperature range.

[0026] In one embodiment, when the heating temperature of the heating component satisfies a preset temperature condition, controlling the working state of the water pump of the steam generator includes:

[0027] When the heating temperature of the heating component meets the preset temperature condition, the water pump is controlled to work at the rated pump speed for the first pumping time;

[0028] The pump speed of the water pump is adjusted according to the heating temperature obtained in real time to control the working state of the water pump.

[0029] In one embodiment, adjusting the pump speed of the water pump according to the heating temperature obtained in real time to control the working state of the water pump includes:

[0030] When the heating temperature obtained in real time is less than or equal to the water cut-off temperature, controlling the pump speed of the water pump to zero;

[0031] When the heating temperature obtained in real time is greater than the water stop temperature and less than or equal to the trigger temperature, the pump speed of the water pump is controlled to be an initial pump speed; the initial pump speed is obtained based on the set temperature of the box;

[0032] When the heating temperature acquired in real time is greater than the trigger temperature and less than or equal to a threshold temperature, controlling the pump speed of the water pump to increase as the heating temperature increases based on the initial pump speed; the threshold temperature is determined based on the trigger temperature;

[0033] When the heating temperature acquired in real time is greater than the threshold temperature, the pump speed of the water pump is controlled to be the rated pump speed.

[0034] In one embodiment, the method further comprises:

[0035] When the heating temperature of the heating component is greater than the protection shutdown temperature, the heating component of the steam generator is controlled to stop heating until the heating temperature is less than the protection restart temperature and then reheated; the protection shutdown temperature and the protection restart temperature are both obtained by the protection threshold.

[0036] In a second aspect, the present application further provides a steam generation control device, the device comprising:

[0037] A data acquisition module, used to acquire a set temperature and a measured temperature of a box of a steam-bake machine; the box of the steam-bake machine is connected to a steam generator of the steam-bake machine;

[0038] A heating module, used for controlling the heating component of the steam generator to heat according to the set temperature of the box and the measured temperature of the box; the steam generator comprises a water tank, the heating component and a water pump, the water tank is connected to the heating component through a water channel, and the water pump is arranged in the water channel;

[0039] The steam generating module is used to control the working state of the water pump of the steam generator when the heating temperature of the heating component meets the preset temperature condition; the water pump is used to transfer the water in the water tank to the heating component, the heating component evaporates the water to generate steam, and the box is used to collect the steam.

[0040] In a third aspect, the present application further provides a steam-bake machine, the steam-bake machine comprising a box, a steam generator and a controller, the box being in communication with the steam generator, the steam generator comprising a water tank, a heating component and a water pump, the water tank being in communication with the heating component via a water channel, the water pump being arranged in the water channel, and the controller connecting the box, the heating component and the water pump;

[0041] The water pump is used to transfer the water in the water tank to the heating component, the heating component evaporates the water to generate steam, the box is used to collect the steam, and the controller is used to control the steam generator to generate steam based on the methods described in the above embodiments.

[0042] In one of the embodiments, the steam-bake machine further includes a temperature sensing package, which is disposed on the cabinet and the heating component and connected to the controller, and is used to collect the actual measured temperature of the cabinet and the heating temperature of the heating component.

[0043] In a fourth aspect, the present application further provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0044] Obtaining a set temperature and a measured temperature of a box of a steam-bake machine; the box of the steam-bake machine is connected to a steam generator of the steam-bake machine;

[0045] The heating component of the steam generator is controlled to heat according to the set temperature of the box and the measured temperature of the box; the steam generator comprises a water tank, the heating component and a water pump, the water tank is connected to the heating component through a water channel, and the water pump is arranged in the water channel;

[0046] When the heating temperature of the heating component meets the preset temperature condition, the working state of the water pump of the steam generator is controlled; the water pump is used to transfer the water in the water tank to the heating component, the heating component evaporates the water to generate steam, and the box is used to collect the steam.

[0047] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0048] Obtaining a set temperature and a measured temperature of a box of a steam-bake machine; the box of the steam-bake machine is connected to a steam generator of the steam-bake machine;

[0049] The heating component of the steam generator is controlled to heat according to the set temperature of the box and the measured temperature of the box; the steam generator comprises a water tank, the heating component and a water pump, the water tank is connected to the heating component through a water channel, and the water pump is arranged in the water channel;

[0050] When the heating temperature of the heating component meets the preset temperature condition, the working state of the water pump of the steam generator is controlled; the water pump is used to transfer the water in the water tank to the heating component, the heating component evaporates the water to generate steam, and the box is used to collect the steam.

[0051] In a sixth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0052] Obtaining a set temperature and a measured temperature of a box of a steam-bake machine; the box of the steam-bake machine is connected to a steam generator of the steam-bake machine;

[0053] The heating component of the steam generator is controlled to heat according to the set temperature of the box and the measured temperature of the box; the steam generator comprises a water tank, the heating component and a water pump, the water tank is connected to the heating component through a water channel, and the water pump is arranged in the water channel;

[0054] When the heating temperature of the heating component meets the preset temperature condition, the working state of the water pump of the steam generator is controlled; the water pump is used to transfer the water in the water tank to the heating component, the heating component evaporates the water to generate steam, and the box is used to collect the steam.

[0055] The steam generation control method, device, steam-bake machine, computer equipment, computer-readable storage medium and computer program product include obtaining the set temperature of the steam-bake machine and the measured temperature of the steam-bake machine, controlling the heating component of the steam generator to heat according to the set temperature of the steam-bake machine and the measured temperature of the steam-bake machine, and controlling the working state of the water pump of the steam generator when the heating temperature of the heating component meets the preset temperature condition. The steam-bake machine is connected to the steam generator, and the steam generator includes a water tank, a heating component and a water pump. The water tank is connected to the heating component through a water channel, and the water pump is arranged in the water channel. The water pump is used to transfer water in the water tank to the heating component, and the heating component evaporates water to generate steam, and the box is used to collect steam. By controlling the steam generator of the steam-bake machine according to the set temperature and the measured temperature, the operation of the heating component and the water pump are adjusted respectively, and then the steam generation is accurately controlled, so that the box collects the corresponding steam to achieve cooking with accurate temperature. In this way, there is no need to heat all the water in the water tank, and the corresponding steam can be generated according to demand, which reduces the steam waiting time and improves the steam generation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0057] Figure 1 is a schematic structural diagram of a steaming and baking machine in one embodiment;

[0058] Figure 2 A schematic flow chart of a steam generation control method in one embodiment;

[0059] Figure 3 It is a flow chart of a heating step of controlling a heating component of a steam generator to perform heating according to a set temperature of a box and a measured temperature of the box in one embodiment;

[0060] Figure 4 It is a flow chart of another embodiment of controlling the heating step of the heating component of the steam generator according to the set temperature of the box and the measured temperature of the box;

[0061] Figure 5 A schematic diagram of a flow chart of controlling a heating component to perform a heating step according to an advanced heating mode in one embodiment;

[0062] Figure 6 It is a flowchart of the steps of controlling the working state of the water pump of the steam generator when the heating temperature of the heating component meets the preset temperature condition in one embodiment;

[0063] Figure 7 It is a flowchart of steps for controlling the working state of a water pump of a steam generator when the heating temperature of a heating component meets a preset temperature condition in another embodiment;

[0064] Figure 8 A schematic flow chart of a steam generation control method in another embodiment;

[0065] Fig. 9 is a structural block diagram of a steam generation control device in one embodiment;

[0066] Fig.10 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0068] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0069] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0070] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0071] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0072] The steam generation control method provided in the embodiment of the present application can be applied to Figure 1 The steam-bake machine shown in the figure includes a box, a steam generator and a controller (not shown in the figure), the box is connected to the steam generator, the steam generator includes a water tank, a heating component and a water pump, the water tank is connected to the heating component through a water channel, the water pump is arranged in the water channel, and the controller connects the box, the heating component and the water pump.

[0073] The water pump is used to transfer the water in the water tank to the heating component, the heating component evaporates the water to generate steam, the box is used to collect the steam, and the controller is used to control the steam generator to generate steam based on the steam generation control method described in each embodiment of the present application. Specifically, the heating component can generate high temperature under the control of the controller, and its temperature can exceed one hundred degrees Celsius. When the water pump pumps the water in the water tank to the heating component, the water is heated and evaporated to generate steam. Since the steam generator and the box are conductive, the steam can be transmitted from the steam generator to the box through the conductive area, and the steam is collected by the box.

[0074] For a steam-bake machine, the box body may be an oven cavity. When using the steam-bake machine, the user may place the food in the oven cavity and then enable the steaming function. When the controller receives a start signal of the steaming function, the steam generator is controlled to generate steam according to the steam generation control method provided in the present application. The steam is gathered in the oven cavity to steam the food and complete the cooking.

[0075] In one of the embodiments, the steam-bake machine further includes a temperature sensing package, which is disposed on the cabinet and the heating component and is connected to the controller, and the temperature sensing package is used to collect the actual measured temperature of the cabinet and the heating temperature of the heating component.

[0076] Specifically, there are at least two temperature sensing packages, one of which is arranged in the box, and the other is arranged in the heating component of the steam generator. The temperature sensing package arranged in the box can collect the actual temperature of the box; the temperature sensing package arranged in the heating component can collect the heating temperature of the heating component. The controller can determine the box set temperature of the steam oven according to the function enabled by the user or the data input by the user. Then, the controller can control the steam generator on the basis of obtaining the box set temperature and the actual temperature of the box, and further adjust the operation of the water pump in combination with the heating temperature of the heating component.

[0077] In an exemplary embodiment, Figure 2As shown, the present application provides a steam generation control method, which is described by taking the method applied to a controller of a steam engine as an example, and includes the following steps 202 to 206.

[0078] Step 202, obtaining the set temperature of the oven cabinet and the actual temperature of the oven cabinet.

[0079] When the steam-bake machine is started, the user will select a cooking mode or input temperature data for the steam-bake machine, and the target temperature corresponding to the cooking mode or the input temperature data can be used as the set temperature of the steam-bake machine. The steam-bake machine also includes a box and a steam generator. The box of the steam generator is connected to the steam generator of the steam-bake machine. Since the steam generated by the steam generator is accumulated in the box, during the steam generation process, as the steam accumulates, the temperature of the box changes dynamically, that is, the measured temperature of the box changes accordingly.

[0080] Specifically, the controller is connected to the cabinet and the steam generator, and can obtain the cooking mode selected by the user or the temperature data input, that is, obtain the cabinet set temperature of the steam-bake machine. At the same time, the controller can also detect the real-time temperature in the cabinet, that is, the cabinet measured temperature. Optionally, the controller can obtain the cabinet measured temperature through a temperature sensing package arranged in the cabinet, or through a structure such as a thermistor circuit that is sensitive to temperature arranged in the cabinet to obtain the cabinet measured temperature, or the cabinet can include a temperature meter or other element that can detect temperature, and the controller connects to the element to obtain the cabinet measured temperature.

[0081] Step 204, controlling the heating component of the steam generator to heat according to the set temperature of the box and the actual temperature of the box.

[0082] Among them, the steam generator includes a water tank, a heating component and a water pump. The water tank is connected to the heating component through a water channel, and the water pump is arranged in the water channel. The water pump can control the water flow in the water channel, which is equivalent to taking water from the water tank and transmitting it to the heating component. The temperature of the heating component is relatively high during operation, which is higher than the boiling point of water. When the water in the water tank is transmitted to the heating component through the water pipeline, it will evaporate on the heating component to produce steam, thereby completing the steam generation of the steam generator. The controller connects the water pump and the heating component, and can control the operation of the water pump and the heating component, which is equivalent to controlling the steam generation of the steam generator. Furthermore, the controller can also be connected to the water tank, monitor the amount of water in the water tank, and generate a water shortage prompt when the amount of water in the water tank is insufficient.

[0083] Specifically, after obtaining the box set temperature and the box measured temperature, the controller can combine the two temperatures to control the heating component of the steam generator for heating. For example, considering the difference between the box measured temperature and the box set temperature, the heating power of the heating component is adjusted accordingly. The larger the difference, the greater the heating power; the smaller the difference, the smaller the heating power. Alternatively, the initial heating power of the heating component can be determined based on the box set temperature, and then the heating power of the heating component can be adjusted based on the box measured temperature feedback.

[0084] Step 206: When the heating temperature of the heating component meets the preset temperature condition, control the working state of the water pump of the steam generator.

[0085] The water pump is used to transfer the water in the water tank to the heating component, the heating component evaporates the water to generate steam, and the box is used to collect the steam. On the basis of the same working state of the heating component, when the working state of the water pump is different, the steam generation rate is different, the amount of steam collected by the box is different, and the temperature of the box is different, that is, the actual measured temperature of the box is different, and the cooking progress of the steam oven is different.

[0086] Specifically, the controller stores preset temperature conditions, which can control the working state of the water pump. That is, the set temperature corresponds to triggering different working states of the water pump. In other words, after the heating component starts heating, the controller will monitor the heating temperature of the heating component, and compare the heating temperature of the heating component with the preset temperature condition. When the heating temperature of the heating component meets the preset temperature condition, the controller can further control the water pump to start working, and can adjust the working state of the water pump according to the different heating temperatures, such as the pumping speed of the water pump. In this way, the controller can control the steam generator by controlling the heating component, and then control the working state of the water pump when the heating temperature meets the preset temperature condition, thereby achieving control of steam generation.

[0087] Furthermore, the preset temperature condition may be a set temperature value, that is, when the heating temperature of the heating component reaches the set temperature value, it indicates that the heating temperature of the heating component meets the preset temperature condition. The preset temperature condition may also be a set temperature value and duration, and only when the heating temperature of the heating component reaches the set temperature value and continues at the set temperature for a duration, it indicates that the heating temperature of the heating component meets the preset temperature condition. The preset temperature condition may also be other conditions. It should be noted that the preset temperature condition indicates a certain working state of the heating component, and the heating temperature it indicates can at least evaporate water. For example, at room temperature and standard atmospheric pressure, the temperature value of the preset temperature condition is greater than one hundred degrees Celsius.

[0088] The steam generation control method includes obtaining the set temperature of the box body and the measured temperature of the box body of the steam-bake machine, controlling the heating component of the steam generator to heat according to the set temperature of the box body and the measured temperature of the box body, and controlling the working state of the water pump of the steam generator when the heating temperature of the heating component meets the preset temperature condition. The box body of the steam-bake machine is connected to the steam generator, and the steam generator includes a water tank, a heating component and a water pump. The water tank is connected to the heating component through a water channel, and the water pump is arranged in the water channel. The water pump is used to transfer the water in the water tank to the heating component, and the heating component evaporates the water to generate steam, and the box body is used to collect steam. By controlling the steam generator of the steam-bake machine according to the set temperature and the measured temperature, the operation of the heating component and the water pump are adjusted respectively, and then the steam generation is accurately controlled, so that the box body collects the corresponding steam to achieve cooking with accurate temperature. In this way, there is no need to heat all the water in the water tank, and the corresponding steam can be generated according to demand, which reduces the steam waiting time and improves the steam generation efficiency.

[0089] In an exemplary embodiment, Figure 3 As shown, step 204 includes steps 302 to 308. Among them:

[0090] Step 302: determining an initial heating mode of the heating component based on the set temperature of the cabinet.

[0091] Specifically, the cabinet set temperature is related to the cooking mode, and the corresponding cabinet set temperature and cooking time are usually selected according to the ingredients to be cooked and the dishes to be cooked. Correspondingly, different cooking needs correspond to different steam needs, and different steam generation controls are required to generate corresponding steam quantities. Therefore, the controller controls the heating component based on the cabinet set temperature. When the steam generator is just started, that is, when the heating component just starts to heat, the controller controls the initial heating mode of the heating component based on the cabinet set temperature.

[0092] Furthermore, the heating mode of the heating component may include an initial heating mode and an advanced heating mode, which may be divided according to different execution methods of the heating mode, such as the level of the heating gear or the size of the heating power; or may be divided according to the activation order of the heating modes, such as using the heating mode activated when the heating component is initially started as the initial heating mode.

[0093] Optionally, considering that the heating component needs to work at a temperature higher than room temperature, the initial heating mode may include a rated heating power mode, that is, controlling the heating component to heat up at the fastest heating rate. At the same time, considering the influence of the cabinet set temperature, the heating power may be reduced when the cabinet set temperature is lower than a certain temperature value, and the heating component may be controlled to heat up by adaptively adjusting the heating power mode.

[0094] For example, in a steam oven, the cabinet setting temperature that can be set is between 40 degrees Celsius and 100 degrees Celsius. When the cabinet setting temperature is greater than or equal to 80 degrees Celsius and less than 100 degrees Celsius, the controller determines that the initial heating mode of the heating component is the rated heating power mode, and controls the heating component to heat up at the fastest heating rate. When the cabinet setting temperature is less than 80 degrees Celsius and greater than or equal to 40 degrees Celsius, the controller determines that the initial heating mode of the heating component is the adaptive adjustment heating mode, and controls the heating power and the heating component to heat up using a PID (proportional-integral-derivative control) algorithm.

[0095] Step 304: Control the heating component to perform heating according to the initial heating mode.

[0096] Specifically, after determining the initial heating mode, the controller controls the heating component to heat in the determined initial heating mode. Optionally, the steam generator also includes a relay, and the controller is connected to the heating component through the relay. The controller outputs a corresponding signal to the relay according to the determined initial heating mode, and the relay transmits it to the heating component accordingly to adjust the heating method of the heating component. Exemplarily, the controller can output signals with different duty cycles to control the conduction degree of the relay, thereby controlling the heating method of the heating component. When heating in the rated heating power mode, the conduction time of the relay can be controlled to account for 100%; when the heating power is controlled by the PID algorithm, the conduction time of the relay can be controlled to change with the difference between the actual measured temperature of the cabinet and the set temperature of the cabinet, so as to realize adaptive feedback regulation control.

[0097] Step 306: When the actual temperature of the cabinet obtained in real time satisfies the first switching condition, determine the advanced heating mode of the heating component.

[0098] The first switching condition corresponds to the cabinet set temperature. Different cabinet set temperatures will enable different first switching conditions, and when the first switching condition is met, it indicates that the heating component can be switched from the initial heating mode to the advanced heating mode. The first switching condition can be a temperature value, and the selection of the temperature value is related to the cabinet set temperature. For example, when the cabinet set temperature is 90 degrees Celsius, the first switching condition can be 80 degrees Celsius, or other temperature values, as long as it can indicate that the heating component has been heated to a certain degree.

[0099] Specifically, the controller stores a plurality of switching conditions, and can select a corresponding switching condition from the switching conditions according to the set temperature of the cabinet and mark it as the first switching condition. At the same time, the controller can obtain the actual measured temperature of the cabinet in real time, and continuously compare the actual measured temperature of the cabinet with the first switching condition during the process of controlling the heating of the heating component. When the actual measured condition of the cabinet obtained in real time meets the first switching condition, it indicates that the heating component can be switched from the initial heating mode to the advanced heating mode.

[0100] Furthermore, the advanced heating mode is obtained on the basis of the initial heating mode. Compared with the heating component temperature increase requirement in the initial heating mode, the advanced heating mode is more inclined to control the heating component to maintain the temperature within a certain range. Therefore, the initial heating mode can also be called the heating stage, and the advanced heating mode can also be called the temperature maintenance stage.

[0101] Step 308 , controlling the heating component to heat according to the advanced heating mode.

[0102] Specifically, after the controller determines the advanced heating mode, it controls the heating component to heat according to the heating mode of the advanced heating mode. For example, the controller outputs a corresponding control signal according to the advanced heating mode, and the heating component heats in response to the corresponding control signal. In the case where the steam generator also includes a relay, the controller can output a corresponding signal to the relay according to the determined advanced heating mode, and the relay transmits the signal to the heating component accordingly to adjust the heating mode of the heating component.

[0103] Exemplarily, the advanced heating mode may be a heating mode with staged interruptions. When the controller controls the heating component according to the advanced heating mode, the controller interrupts the heating of the heating component according to a preset interruption duration to maintain the temperature of the heating component within a certain range, thereby achieving the purpose of maintaining the temperature.

[0104] In this embodiment, the heating component is divided into different heating stages, and the initial heating mode and the first switching condition are determined according to the set temperature of the cabinet, so that the heating process of the heating component is closely related to the set temperature of the cabinet, thereby avoiding the temperature of the heating component getting out of control and causing the actual measured temperature of the cabinet to deviate from the requirement, thereby improving the stability and reliability of the steam oven.

[0105] In an exemplary embodiment, Figure 4 As shown, after step 308, the steam generation control method further includes step 402: when the real-time measured temperature of the cabinet satisfies the second switching condition, determining that the heating component is switched from the advanced heating mode to the initial heating mode.

[0106] The second switching condition corresponds to the cabinet set temperature. Different cabinet set temperatures will enable different second switching conditions. When the second switching condition is met, it indicates that the heating component can switch from the advanced heating mode to the initial heating mode.

[0107] Specifically, the controller stores a plurality of switching conditions including a second switching condition, and the second switching condition is established based on the set temperature of the box. For example, the second switching condition is a temperature calculation formula related to the set temperature of the box, or a temperature value related to the set temperature of the box. At the same time, the controller can obtain the actual measured temperature of the box in real time, and in the process of controlling the heating of the heating component, continuously compare the actual measured temperature of the box with the second switching condition. When the actual measured condition of the box obtained in real time meets the second switching condition, it indicates that the heating component can be switched from the advanced heating mode to the initial heating mode.

[0108] For example, the second switching condition may be a temperature value determined according to the set temperature of the cabinet. For example, if the second switching condition is that the temperature is 20 degrees Celsius lower than the set temperature of the cabinet, then when the set temperature of the cabinet is 90 degrees Celsius, the second switching condition may be 70 degrees Celsius. If the measured temperature of the cabinet obtained in real time meets the second switching condition, it indicates that the temperature of the heating component is too low and cannot maintain the consistency between the measured temperature of the cabinet and the set temperature of the cabinet. It is necessary to switch from the advanced heating mode to the initial heating mode, that is, switch from the temperature maintenance stage back to the temperature rise stage to control the heating component to rise in temperature.

[0109] Furthermore, after switching the heating component from the advanced heating mode to the initial heating mode, the process can return to step 304 and control the heating component to heat according to the initial heating mode to increase the temperature of the heating component, thereby forming a cycle to stably heat the heating component to maintain the consistency between the actual measured temperature of the box and the set temperature of the box.

[0110] In this embodiment, the heating mode of the heating component is controlled to switch repeatedly between the initial heating mode and the advanced heating mode, and the heating component is heated in the corresponding heating mode. This ensures accurate heating control of the heating component, and accurate temperature control is beneficial to the subsequent control of steam generation, which is beneficial to accurate cooking, improves the accuracy of steam generation control, improves steam utilization efficiency, and increases the reliability of the steam-bake machine.

[0111] In an exemplary embodiment, Figure 5 As shown, step 308 includes steps 502 to 504 .

[0112] Step 502, determining the cycle duty cycle according to the set temperature of the cabinet and the actual measured temperature of the cabinet.

[0113] The controller can control the heating of the heating component through PID algorithm control, and control the heating of the heating component by outputting different duty cycle signals. Specifically, the controller calculates the difference between the obtained box set temperature and the box measured temperature, and determines the value of the cycle duty cycle of the duty cycle signal in each cycle according to the size of the difference. The larger the difference, the larger the value of the cycle duty cycle, which indicates a higher heating efficiency.

[0114] Exemplarily, if the duty cycle of the heating component is thirty seconds, the duty cycle represents the ratio of the heating on time and the heating off time of the heating component within thirty seconds. If the duty cycle is 50%, the heating on time and the heating off time in the corresponding cycle are both fifteen seconds.

[0115] Step 504: output a heating signal based on the periodic duty cycle to control the heating component to perform heating.

[0116] Specifically, after determining the cycle duty cycle, the controller outputs a heating signal according to the determined cycle duty cycle, the heating signal being a duty cycle signal, and using the determined cycle duty cycle as a parameter of the duty cycle signal, outputs the duty cycle signal to the heating component to control the heating of the heating component. When the steam generator further includes a relay, the heating signal output by the controller may be output to the relay, and by controlling the opening and closing of the relay, the heating of the heating component is correspondingly controlled.

[0117] Exemplarily, the heating component operates at a duty cycle of thirty seconds, and the heating signal output by the controller can be to control the heating component to turn on for ten seconds and off for twenty seconds in one cycle (the cycle duty cycle is 1 / 3). Different heating signals can also be adjusted to achieve heating control of the heating component.

[0118] In this embodiment, the heating regulation control of the heating component is performed based on the PID algorithm to ensure that the heating process of the heating component is accurate and reliable, which is beneficial to the subsequent steam generation and accurate cooking, thereby improving the accuracy of steam generation control and the cooking reliability of the steam oven.

[0119] When the cabinet set temperature is different, the corresponding first switching condition is also different. In an exemplary embodiment, the first switching condition is adjusted accordingly with the change of the cabinet set temperature. Before step 306, the steam generation control method further includes steps 602 to 606 of confirming the first switching condition.

[0120] Step 602, when the cabinet set temperature is in the first temperature range, the first switching condition includes: the cabinet measured temperature is greater than or equal to the difference between the cabinet set temperature and a fixed value, or the cabinet measured temperature is higher than the lower limit of the first temperature range and lower than the cabinet set temperature within a preset time period.

[0121] Step 604, when the box set temperature is in the second temperature range, the first switching condition includes: the box measured temperature is greater than or equal to the difference between the box set temperature and the fixed value.

[0122] Step 606: When the set temperature of the cabinet is in the third temperature range, the first switching condition includes: the heating component is in the initial heating mode.

[0123] Among them, the first temperature interval, the second temperature interval and the third temperature interval are set temperature value ranges, and the temperature value ranges among the three are not repeated, that is, the lower limit value of the first temperature interval is greater than the upper limit value of the second temperature interval, and the lower limit value of the second temperature interval is greater than the upper limit value of the third temperature interval. Further, the intersection of the first temperature interval, the second temperature interval and the third temperature interval is empty, and the union of the three is equivalent to the value range of the set temperature of the cabinet. Exemplarily, when the value range of the set temperature of the cabinet is less than or equal to 100 degrees Celsius and greater than or equal to 40 degrees Celsius, the first temperature interval can be less than or equal to 100 degrees Celsius and greater than 90 degrees Celsius; the second temperature interval can be less than or equal to 90 degrees Celsius and greater than 50 degrees Celsius; the third temperature interval can be less than or equal to 50 degrees Celsius and greater than or equal to 40 degrees Celsius.

[0124] Specifically, different first switching conditions are determined according to the different temperature intervals in which the cabinet set temperature is located, so as to achieve accurate entry into the advanced heating mode. When the cabinet set temperature is in the first temperature interval, the corresponding first switching condition that is enabled includes the first condition or the second condition. The first condition is that the cabinet measured temperature is greater than or equal to the difference between the cabinet set temperature and a fixed value, that is, the cabinet measured temperature is greater than or equal to a temperature value related to the cabinet set temperature. The second condition is that the cabinet measured temperature is higher than the lower limit of the first temperature interval within a preset time length, and the cabinet measured temperature is lower than the cabinet set temperature within the preset time length. For the first switching condition, the cabinet set temperature only needs to meet one of the first condition or the second condition to be regarded as meeting the first switching condition.

[0125] When the set temperature of the cabinet is in the second temperature range, the first switching condition corresponding to the activation includes the first condition, that is, the measured temperature of the cabinet is greater than or equal to the difference between the set temperature of the cabinet and the fixed value. The fixed value here can be the same as the fixed value above, or it can be another selected value. When the set temperature of the cabinet is in the third temperature range, the first switching condition corresponding to the activation is that the heating component is in the initial heating mode. Since the heating component is in the initial heating mode when the first switching condition is judged, then when the set temperature of the cabinet is in the third temperature range at this time, the first switching condition is directly met and it can be switched to the advanced heating mode.

[0126] Exemplarily, the first temperature interval is less than or equal to 100 degrees Celsius and greater than 90 degrees Celsius, and its corresponding first switching condition is to meet one of the following two conditions: First, the actual measured temperature of the cabinet is greater than or equal to the temperature value after the cabinet setting temperature is subtracted by 2 degrees Celsius; the fixed value is 2 degrees Celsius. Second, the actual measured temperature of the cabinet is greater than 90 degrees Celsius and less than the cabinet setting temperature, and the numerical value relationship is maintained for 60 seconds; the preset time length is 60 seconds. The second temperature interval is less than or equal to 90 degrees Celsius and greater than 50 degrees Celsius, and its corresponding first switching condition is that the actual measured temperature of the cabinet is greater than or equal to the temperature value after the cabinet setting temperature is subtracted by 2 degrees Celsius; the fixed value is 2 degrees Celsius. The third temperature interval is less than or equal to 50 degrees Celsius and greater than or equal to 40 degrees Celsius, and its corresponding first switching condition is that the heating component is in the initial heating mode, that is, when the cabinet setting temperature is in the third temperature interval, the heating component can be switched to the advanced heating mode.

[0127] In this embodiment, by dividing the cabinet setting temperature into different temperature intervals and correspondingly enabling different first switching conditions, heating control is achieved according to different set requirements, ensuring the degree of matching between the steam-bake machine's operation and the user's needs, which is conducive to the accuracy and efficiency of subsequent steam generation.

[0128] Furthermore, when the cabinet set temperature is different, the corresponding second switching condition is also different. In an exemplary embodiment, the second switching condition changes with the cabinet set temperature. Before step 402, the steam generation control method further includes a step 608 of confirming the second switching condition: the cabinet measured temperature is less than or equal to the difference between the cabinet set temperature and the fixed value, and the cabinet set temperature is not in the third temperature range.

[0129] Specifically, the second switching condition is used as a basis for switching back to the initial heating mode when the heating component is in the advanced heating mode. The second switching condition is related to the set temperature of the cabinet, specifically, the measured temperature of the cabinet is less than or equal to the difference between the set temperature of the cabinet and the fixed value. The fixed value here can be the same as the fixed value mentioned above, or it can be a different value. For example, if the fixed value is 10 degrees Celsius, the above second switching condition can be expressed as the temperature value of the measured temperature of the cabinet is less than or equal to the set temperature of the cabinet minus 10 degrees Celsius.

[0130] On the basis of satisfying that the measured temperature of the cabinet is less than or equal to the difference between the set temperature of the cabinet and the fixed value, it is also necessary to limit the set temperature of the cabinet to not be in the third temperature interval. When the controller heats the heating component according to the set temperature of the cabinet in the third temperature interval, it will skip the initial heating mode, and the advanced heating mode will not be switched to the initial heating mode at this time. In other words, when the set temperature of the cabinet is in the third temperature interval, the controller controls the heating component to continue heating control in the advanced heating mode. In other words, the controller will heat the heating component in the initial heating mode and the advanced heating mode in the heating method corresponding to the advanced heating mode.

[0131] Exemplarily, the heating mode corresponding to the advanced heating mode is PID algorithm control. When the set temperature of the cabinet is in the third temperature range, the heating component will continue to perform heating control using the PID algorithm control, regardless of whether the heating component is in the initial heating mode or the advanced heating mode.

[0132] In this embodiment, by clarifying the second switching condition, the conditions for switching the heating component from the advanced heating mode to the initial heating mode are limited, which is conducive to flexible switching of the heating mode of the heating component and to accurate heating control of the heating component by the controller, so as to facilitate accurate control of subsequent steam generation.

[0133] In an exemplary embodiment, Figure 6 As shown, step 206 includes steps 702 to 704 .

[0134] Step 702: When the heating temperature of the heating component meets the preset temperature condition, the water pump is controlled to operate at the rated pump speed for the first pumping time.

[0135] Specifically, when the controller controls the heating of the heating component, it also controls the water pump. The controller stores preset temperature conditions, and the value of the preset temperature condition can be set by the user to trigger the water pump to start working. When the water pump is working, the water channel is connected, and the water in the water tank will be transported to the heating component by the water pump, and the water is evaporated by the heating component to generate steam. At the same time, the water pump has a set first pump program when it starts, which is used to start the water pump to remove air. That is, when the water pump starts working, it will work at the rated pump speed for the first pump time.

[0136] Furthermore, the preset temperature conditions can be determined based on the cabinet set temperature. For the control of the water pump, the cabinet set temperature can be divided into a first set temperature interval and a second set temperature interval. When the cabinet set temperature is in different set temperature intervals, the preset temperature conditions are also different.

[0137] For example, the first set temperature interval is greater than 50 degrees Celsius, and the second set temperature interval is less than or equal to 50 degrees Celsius. The preset temperature condition corresponding to the first set temperature interval is 155 degrees Celsius, that is, when the heating temperature of the heating component reaches 155 degrees Celsius, it is characterized by satisfying the preset temperature condition; the preset temperature condition corresponding to the second set temperature interval is 135 degrees Celsius, that is, when the heating temperature of the heating component reaches 135 degrees Celsius, it is characterized by satisfying the preset temperature condition. Among them, the rated pump speed can be 100 pump speed (i.e. 100% pump speed), and the first pump duration can be set arbitrarily, and 200 milliseconds can be selected as an example.

[0138] Step 704, adjusting the pump speed of the water pump according to the heating temperature obtained in real time to control the working state of the water pump.

[0139] Specifically, when the water pump starts to start, water drops onto the heating component and evaporates, generating steam on the one hand, and the steam reaches the box body and affects the measured temperature of the box body; on the other hand, the evaporation of water takes away heat, causing the heating temperature of the heating component to fluctuate. The controller can adjust the pump speed of the water pump according to the real-time heating temperature, control the change of the working state of the water pump, and thus maintain the generation of steam on the one hand, ensuring the measured temperature of the box body and the ability of steam to complete cooking, and on the other hand, adjust the impact on the heating component to stabilize the temperature of the heating component.

[0140] Furthermore, in the control of the pump speed of the water pump, the heating temperature can be compared with different temperature levels, and the pump speed of the water pump can be controlled according to the temperature level at which the current heating temperature is located. Figure 7 As shown, step 704 includes steps 802 to 808 .

[0141] Step 802: When the real-time heating temperature is less than or equal to the water cut-off temperature, the pump speed of the water pump is controlled to be zero.

[0142] Specifically, the water cut-off temperature is one of the temperature levels. When the heating temperature is not higher than the water cut-off temperature, it indicates that the temperature of the heating component is too low to generate steam, and the temperature of the heating component needs to be increased. Therefore, when the controller controls the pump speed of the water pump, the pump speed of the water pump can be controlled to zero to assist in increasing the temperature of the heating component.

[0143] Exemplarily, the water stop temperature can be determined according to the box set temperature. The box set temperature is divided into a first set temperature interval and a second set temperature interval, the first set temperature interval is greater than 50 degrees Celsius, and the second set temperature interval is less than or equal to 50 degrees Celsius. The water stop temperature corresponding to the first set temperature interval is 145 degrees Celsius, and the water stop temperature corresponding to the second set temperature interval is 130 degrees Celsius.

[0144] Step 804: When the real-time acquired heating temperature is greater than the water cut-off temperature and less than or equal to the trigger temperature, the pump speed of the water pump is controlled to be the initial pump speed.

[0145] Specifically, the trigger temperature is one of the temperature levels, and the trigger temperature can be used as a preset temperature condition to trigger the water pump to start working. After the water pump has started working, the heating temperature of the heating component changes and may be lower than the trigger temperature. When the controller detects that the heating temperature is greater than the water stop temperature and less than or equal to the trigger temperature, it controls the pump speed of the water pump to the initial pump speed. The initial pump speed is obtained based on the set temperature of the cabinet. The set temperature of the cabinet is divided into a first set temperature interval and a second set temperature interval. The initial pump speed corresponding to the first set temperature interval is 50 pump speeds, and the initial pump speed corresponding to the second set temperature interval is 40 pump speeds.

[0146] Step 806 , when the heating temperature acquired in real time is greater than the trigger temperature and less than or equal to the threshold temperature, the pump speed of the water pump is controlled to increase based on the initial pump speed as the heating temperature increases.

[0147] The threshold temperature is determined based on the trigger temperature, and may be a temperature obtained by increasing a specified value on the basis of the trigger temperature. For example, the threshold temperature may be a temperature obtained by adding 45 degrees Celsius to the trigger temperature.

[0148] Specifically, the threshold temperature is one of the temperature levels. The controller obtains the heating temperature in real time and compares the heating temperature with each temperature in the temperature level. If the heating temperature is greater than the trigger temperature and less than or equal to the threshold temperature, the controller will control the pump speed of the water pump based on the initial pump speed and increase the pump speed according to the heating temperature. At the same time, the initial pump speed is obtained based on the box set temperature, which has been recorded above.

[0149] Exemplarily, the box set temperature is divided into a first set temperature interval and a second set temperature interval, and the initial pump speed corresponding to the first set temperature interval is 50 pump speeds, and the initial pump speed corresponding to the second set temperature interval is 40 pump speeds. When the heating temperature is greater than the trigger temperature and less than or equal to the threshold temperature, the pump speed of the water pump can be (Tb-Tu) / 2+Si, where Tb is the heating temperature, Tu is the trigger temperature, and Si is the initial pump speed. When the trigger temperature is the temperature after the trigger temperature is added by 45 degrees Celsius, the formula indicates that as the heating temperature increases by 2 degrees Celsius above the trigger temperature, the pump speed of the water pump increases by 1 on the basis of the initial pump speed.

[0150] Step 808: When the heating temperature acquired in real time is greater than the threshold temperature, the pump speed of the water pump is controlled to be the rated pump speed.

[0151] Specifically, the threshold temperature is one of the temperature levels. When the controller detects that the heating temperature is greater than the threshold temperature, it indicates that the temperature of the heating component is too high. At this time, the pump speed of the water pump can be controlled to the rated pump speed, that is, the maximum pump speed (100 pump speeds). The heating component is cooled by high-speed water pumping and a large amount of steam is generated at the same time.

[0152] In this embodiment, by constructing temperature levels based on the water stop temperature, trigger temperature and threshold temperature, and comparing the heating temperature with the temperature level, different water pump operation controls are implemented accordingly, the pump speed is adjusted, steam generation control is achieved, and the temperature of the heating component can be adjusted at the same time.

[0153] In an exemplary embodiment, Figure 8 As shown, the steam generation control method further includes step 902: when the heating temperature of the heating component is greater than the protection shutdown temperature, controlling the heating component of the steam generator to stop heating until the heating temperature is less than the protection restart temperature and then reheating.

[0154] The protection shutdown temperature and the protection restart temperature are both obtained from the protection threshold, and the protection shutdown temperature is higher than the protection restart temperature. Exemplarily, the protection shutdown temperature is the protection threshold plus 15 degrees Celsius; the protection restart temperature is the protection threshold minus 15 degrees Celsius.

[0155] Specifically, in order to ensure the safe operation of the heating component and further ensure the reliability of the steam oven, the controller will continue to detect the heating temperature of the heating component. When the heating temperature of the heating component is greater than the protection shutdown temperature, the temperature of the heating component is too high and there is a greater risk of damage. In order to ensure safe operation, it is necessary to control the heating component to stop heating to cool the heating component. At the same time, the protection shutdown temperature is higher than the threshold temperature. At this time, the water pump maintains the rated pump speed to cool the heating component. As the temperature of the heating component decreases, the controller continues to detect the heating temperature. When the heating temperature is lower than the protection restart temperature, the heating component is controlled to heat again. At this time, step 204 can be taken to control the heating component of the steam generator to heat according to the set temperature of the cabinet and the actual measured temperature of the cabinet.

[0156] In this embodiment, the temperature of the heating component is protected from high temperature, the heating component is controlled to shut down when the temperature of the heating component is too high, and then restarted after the temperature drops. This is beneficial to ensuring the safety and reliability of the steam generation control process. At the same time, it is restarted in time after shutdown to ensure the steam generation efficiency, which is beneficial to completing complete cooking and improving the reliability of the steam engine.

[0157] Based on the same technical concept, the present application also provides a steaming and baking machine, such as Figure 1As shown, the steam-bake machine includes a cabinet, a steam generator and a controller (not shown in the figure), the cabinet is connected to the steam generator, the steam generator includes a water tank, a heating component and a water pump, the water tank is connected to the heating component through a water channel, the water pump is arranged in the water channel, and the controller connects the cabinet, the heating component and the water pump.

[0158] The water pump is used to transfer the water in the water tank to the heating component, the heating component evaporates the water to generate steam, the box is used to collect the steam, and the controller is used to control the steam generator to generate steam based on the steam generation control method described in the above embodiments. The heating component can generate high temperature under the control of the controller, and its temperature can exceed one hundred degrees Celsius. When the water pump pumps the water in the water tank to the heating component, the water is heated and evaporated to generate steam.

[0159] Specifically, the water pump can control the water flow in the water channel, which is equivalent to taking water from the water tank and transmitting it to the heating component. The temperature of the heating component is relatively high when it is working, which is higher than the boiling point of water. When the water in the water tank is transmitted to the heating component through the water pipe, it will evaporate on the heating component to generate steam, thereby completing the steam generation of the steam generator. Since the steam generator and the box are connected, the steam can be transmitted from the steam generator to the box through the connected area, and the steam is collected by the box.

[0160] For a steam-bake machine, the box body may be an oven cavity. When using the steam-bake machine, the user may place the food in the oven cavity and then enable the steaming function. When the controller receives a start signal of the steaming function, the steam generator is controlled to generate steam according to the steam generation control method provided in the present application. The steam is gathered in the oven cavity to steam the food and complete the cooking.

[0161] Optionally, the steam generator further comprises a relay, and the controller is connected to the heating component via the relay. The heating component may directly receive water in the water channel, or a metal layer may be provided on the surface of the heating component, and the metal layer with good thermal conductivity evaporates water to obtain steam.

[0162] In one of the embodiments, the steam-bake machine further includes a temperature sensing package, which is disposed on the cabinet and the heating component and is connected to the controller, and the temperature sensing package is used to collect the actual measured temperature of the cabinet and the heating temperature of the heating component.

[0163] Specifically, there are at least two temperature sensing packages, one of which is arranged in the box, and the other is arranged in the heating component of the steam generator. The temperature sensing package arranged in the box can collect the actual temperature of the box; the temperature sensing package arranged in the heating component can collect the heating temperature of the heating component. The controller can determine the box set temperature of the steam oven according to the function enabled by the user or the data input by the user. Then, the controller can control the steam generator on the basis of obtaining the box set temperature and the actual temperature of the box, and further adjust the operation of the water pump in combination with the heating temperature of the heating component.

[0164] Optionally, the steam generator further includes a relay, and the controller can be connected to the heating component via the relay. Furthermore, a drip valve can be provided at one end of the water channel close to the heating component, and the drip valve drips water in the water channel onto the heating component, where the water is heated to generate steam and is transmitted to the box. A waste water outlet is also provided at the bottom of the steam generator, which can discharge the excess unevaporated water dripping from the drip valve out of the steam generator.

[0165] In order to better understand the above scheme, combined with Figure 1 The application scenario shown is explained in detail below in conjunction with a specific embodiment.

[0166] In one embodiment, the steam-bake machine comprises a temperature-sensing package, a cabinet, a steam generator and a controller, wherein the steam generator comprises a water tank, a heating component and a water pump, and the controller controls the heating component and the water pump.

[0167] The controller obtains the set temperature of the box (not less than 40 degrees Celsius and not more than 100 degrees Celsius), and performs stage control on the heating component according to the set temperature of the box, as shown in Table 1.

[0168] Table 1

[0169]

[0170] When the set temperature of the cabinet is greater than or equal to 80 degrees Celsius and less than 100 degrees Celsius, the controller determines that the heating component's heating stage is the rated heating power mode, heating at 100% power, and the corresponding temperature maintenance stage is PID algorithm controlled power heating. When the set temperature of the cabinet is less than 80 degrees Celsius and greater than or equal to 40 degrees Celsius, the heating component's heating stage and temperature maintenance stage are both controlled by PID algorithm. In the standby stage, the heating component is not heated regardless of the set temperature.

[0171] Among them, the PID algorithm controls the power to operate the boiler heating tube at a duty cycle with a period of 30s. The duty cycle is determined by the PID algorithm (determined based on the actual measured temperature of the box and the set temperature of the box).

[0172] In the process of stage switching, the first switching condition from the heating stage to the temperature maintenance stage is as shown in Table 2.

[0173] Table 2

[0174]

[0175] When the cabinet set temperature is in the first temperature range, that is, less than or equal to 100 degrees Celsius and greater than 90 degrees Celsius, the corresponding first switching condition is to meet one of the following two conditions: First, the cabinet measured temperature is greater than or equal to the cabinet set temperature minus 2 degrees Celsius. Second, the cabinet measured temperature is greater than 90 degrees Celsius and less than the cabinet set temperature, and this numerical relationship is maintained for 60 seconds.

[0176] When the cabinet set temperature is in the second temperature range, that is, less than or equal to 90 degrees Celsius and greater than 50 degrees Celsius, the corresponding first switching condition is that the cabinet actual temperature is greater than or equal to the cabinet set temperature minus 2 degrees Celsius.

[0177] When the set temperature of the cabinet is in the third temperature range, that is, less than or equal to 50 degrees Celsius and greater than or equal to 40 degrees Celsius, the corresponding first switching condition is to directly enter the temperature maintenance stage.

[0178] In the temperature maintenance stage, if the actual temperature is ≤ the set temperature -10°C and the set temperature is >50°C, the temperature maintenance stage will be exited and the temperature rise stage will be re-entered.

[0179] The controller also controls the water pump. When controlling, the pump speed of the water pump is controlled by combining the parameters in Table 3 and the control logic of the following two stages.

[0180] Table 3

[0181]

[0182] Phase 1: When the steam oven is switched from non-cooking state to cooking state, the boiler (heating component) is heated to Tu (triggering water pump threshold, which is the trigger temperature) to start water pump control. When Tb (boiler temperature, which is the heating temperature) > Tu, the first pump program is triggered, with a pump speed of 100, lasting for 200ms, completing the first pump and entering Phase 2.

[0183] Phase 2: When Tb>Tu, the water pump starts to work. The duration of the water pump can be calculated by PID. The corresponding pump speed control logic is as follows:

[0184] a: When Tb is less than or equal to Td (the water pump stop threshold, which is the water stop temperature), the water pump speed = 0.

[0185] b: When Tb is between Tu and Td, the speed = Si (the initial value of the water pump, which is the initial pump speed). The first set temperature range is greater than 50 degrees Celsius, and the corresponding initial pump speed is 50 pump speeds; the second set temperature range is less than or equal to 50 degrees Celsius, and the corresponding initial pump speed is 40 pump speeds.

[0186] c: When Tb is in the range of Tu to (Tu + 45), the speed = (Tb - Tu) / 2 + Si. This is equivalent to increasing the pump speed of the water pump by 1 based on the initial pump speed for every 2-degree Celsius increase in the trigger temperature.

[0187] d: When Tb is greater than or equal to (Tu + 45): the speed = 100, which is the rated pump speed.

[0188] Due to the errors of the chip characteristics and the hardware peripheral devices, the actual output of the rate is about 3 us longer than the theoretical duty cycle time, and the positive and negative errors are within 2%.

[0189] In the above control process, when Tb > Tp (protection threshold) + 15 °C, the heating component immediately stops heating. When the temperature drops to Tb < Tp - 15 °C, the heating component continues to heat.

[0190] In this embodiment, steam is generated by the cooperation of the heating component and the water pump, and an instant steam generator is designed. Combined with the controller, a precise control system is formed to accurately sense the temperature of the steam generator. According to the user's set target, the steam generation is dynamically and real-time controlled. At the same time, the steam feedback affects the measured temperature of the box body, forming a closed-loop system, achieving the effect of instant use in theory, and efficiently solving the problems of high power consumption, high energy consumption, and long preheating waiting time of the traditional water-boiling steam generation system.

[0191] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are sequentially shown according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same moment, but can be executed at different moments. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least a part of other steps or steps in other steps.

[0192] Based on the same inventive concept, the embodiment of the present application also provides a steam generation control device for implementing the steam generation control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more steam generation control device embodiments provided below can refer to the above limitations on the steam generation control method, and will not be repeated here.

[0193] In an exemplary embodiment, Fig. 9 As shown, a steam generation control device is provided, comprising: a data acquisition module 920, a heating module 940 and a steam generation module 960, wherein:

[0194] The data acquisition module 920 is used to acquire the set temperature and the measured temperature of the box of the steam-bake machine; the box of the steam-bake machine is connected to the steam generator of the steam-bake machine;

[0195] The heating module 940 is used to control the heating component of the steam generator to heat according to the set temperature of the box and the measured temperature of the box; the steam generator includes a water tank, a heating component and a water pump, the water tank is connected to the heating component through a water channel, and the water pump is arranged in the water channel;

[0196] The steam generating module 960 is used to control the working state of the water pump of the steam generator when the heating temperature of the heating component meets the preset temperature condition; the water pump is used to transfer the water in the water tank to the heating component, the heating component evaporates the water to generate steam, and the box is used to collect the steam.

[0197] In one embodiment, the heating module 940 is further used to determine the initial heating mode of the heating component based on the set temperature of the box, and control the heating component to perform heating according to the initial heating mode. When the real-time measured temperature of the box meets the first switching condition, the advanced heating mode of the heating component is determined, and the first switching condition corresponds to the set temperature of the box. The heating component is controlled to perform heating according to the advanced heating mode.

[0198] In one embodiment, the heating module 940 is further used to determine that the heating component switches from the advanced heating mode to the initial heating mode when the actual temperature of the cabinet obtained in real time meets the second switching condition; the second switching condition corresponds to the set temperature of the cabinet.

[0199] In one of the embodiments, the heating module 940 is further used to determine a cycle duty cycle according to the set temperature of the box and the actual measured temperature of the box, and output a heating signal based on the cycle duty cycle to control the heating component to perform heating.

[0200] In one embodiment, the steam generation control device further includes a conditional switching module corresponding to different cabinet set temperatures. The conditional switching module is used for when the cabinet set temperature is in the first temperature interval, the first switching condition includes: the cabinet measured temperature is greater than or equal to the difference between the cabinet set temperature and a fixed value, or the cabinet measured temperature is higher than the lower limit of the first temperature interval and less than the cabinet set temperature within a preset time period; when the cabinet set temperature is in the second temperature interval, the first switching condition includes: the cabinet measured temperature is greater than or equal to the difference between the cabinet set temperature and a fixed value; when the cabinet set temperature is in the third temperature interval, the first switching condition includes: the heating component is in the initial heating mode. Among them, the lower limit of the first temperature interval is greater than the upper limit of the second temperature interval, and the lower limit of the second temperature interval is greater than the upper limit of the third temperature interval.

[0201] In one embodiment, the conditional switching module is also used for the second switching condition that the actual measured temperature of the cabinet is less than or equal to the difference between the set temperature of the cabinet and the fixed value, and the set temperature of the cabinet is not in the third temperature range.

[0202] In one embodiment, the steam generation module 960 is further used to control the water pump to work at the rated pump speed for the first pumping time when the heating temperature of the heating component meets the preset temperature condition. The pump speed of the water pump is adjusted according to the real-time obtained heating temperature to control the working state of the water pump.

[0203] In one of the embodiments, the steam generation module 960 is also used to control the pump speed of the water pump to zero when the real-time heating temperature is less than or equal to the water stop temperature; when the real-time heating temperature is greater than the water stop temperature and less than or equal to the trigger temperature, control the pump speed of the water pump to the initial pump speed; the initial pump speed is obtained based on the set temperature of the box; when the real-time heating temperature is greater than the trigger temperature and less than or equal to the threshold temperature, control the pump speed of the water pump to increase on the basis of the initial pump speed as the heating temperature increases; the threshold temperature is determined based on the trigger temperature; when the real-time heating temperature is greater than the threshold temperature, control the pump speed of the water pump to the rated pump speed.

[0204] In one embodiment, the steam generation control device further includes a protection module, which is used to control the heating component of the steam generator to stop heating when the heating temperature of the heating component is greater than the protection shutdown temperature, and to reheat when the heating temperature is less than the protection restart temperature. The protection shutdown temperature and the protection restart temperature are both obtained from the protection threshold.

[0205] Each module in the steam generation control device can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0206] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Fig.10 As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a steam generation control method is implemented. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0207] Those skilled in the art will understand that Fig.10 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0208] In one embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above method embodiments when executing the computer program.

[0209] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0210] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0211] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0212] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0213] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A steam generation control method, characterized in that: The method comprises: Obtaining a set temperature and a measured temperature of a box of a steam-bake machine; the box of the steam-bake machine is connected to a steam generator of the steam-bake machine; The heating component of the steam generator is controlled to heat according to the set temperature of the box and the measured temperature of the box; the steam generator comprises a water tank, the heating component and a water pump, the water tank is connected to the heating component through a water channel, and the water pump is arranged in the water channel; When the heating temperature of the heating component meets the preset temperature condition, the working state of the water pump of the steam generator is controlled; the water pump is used to transfer the water in the water tank to the heating component, the heating component evaporates the water to generate steam, and the box is used to collect the steam.

2. The method according to claim 1, characterized in that The step of controlling the heating component of the steam generator to heat the steam generator according to the set temperature of the box and the measured temperature of the box includes: Determining an initial heating mode of the heating component based on the set temperature of the cabinet; controlling the heating component to heat according to the initial heating mode; When the measured temperature of the box body obtained in real time meets a first switching condition, determining the advanced heating mode of the heating component; the first switching condition corresponds to the set temperature of the box body; The heating component is controlled to perform heating according to the advanced heating mode.

3. The method according to claim 2, characterized in that After controlling the heating component to heat according to the advanced heating mode, the method further includes: When the actual temperature of the cabinet obtained in real time meets a second switching condition, it is determined that the heating component is switched from the advanced heating mode to the initial heating mode; the second switching condition corresponds to the set temperature of the cabinet.

4. The method according to claim 2, characterized in that: The step of controlling the heating component to perform heating according to the advanced heating mode includes: Determine the cycle duty cycle according to the box set temperature and the box measured temperature; A heating signal is output based on a periodic duty cycle to control the heating component to perform heating.

5. The method according to claim 3, characterized in that: When the box set temperature is in the first temperature range, the first switching condition includes: the box measured temperature is greater than or equal to the difference between the box set temperature and a fixed value, or the box measured temperature is higher than the lower limit of the first temperature range and lower than the box set temperature within a preset time period; When the box set temperature is in the second temperature range, the first switching condition includes: the measured box temperature is greater than or equal to the difference between the box set temperature and a fixed value; When the box set temperature is in the third temperature range, the first switching condition includes: the heating component is in the initial heating mode; The lower limit value of the first temperature interval is greater than the upper limit value of the second temperature interval, and the lower limit value of the second temperature interval is greater than the upper limit value of the third temperature interval.

6. The method according to claim 5, characterized in that The second switching condition includes: The actually measured temperature of the box is less than or equal to the difference between the set temperature of the box and a fixed value, and the set temperature of the box is not in the third temperature range.

7. The method according to claim 1, characterized in that When the heating temperature of the heating component meets the preset temperature condition, controlling the working state of the water pump of the steam generator includes: When the heating temperature of the heating component meets the preset temperature condition, the water pump is controlled to work at the rated pump speed for the first pumping time; The pump speed of the water pump is adjusted according to the heating temperature obtained in real time to control the working state of the water pump.

8. The method according to claim 7, characterized in that The step of adjusting the pump speed of the water pump according to the heating temperature obtained in real time and controlling the working state of the water pump comprises: When the heating temperature obtained in real time is less than or equal to the water cut-off temperature, controlling the pump speed of the water pump to zero; When the heating temperature obtained in real time is greater than the water stop temperature and less than or equal to the trigger temperature, the pump speed of the water pump is controlled to be an initial pump speed; the initial pump speed is obtained based on the set temperature of the box; When the heating temperature acquired in real time is greater than the trigger temperature and less than or equal to a threshold temperature, controlling the pump speed of the water pump to increase as the heating temperature increases based on the initial pump speed; the threshold temperature is determined based on the trigger temperature; When the heating temperature acquired in real time is greater than the threshold temperature, the pump speed of the water pump is controlled to be the rated pump speed.

9. The method according to claim 1, characterized in that: The method further comprises: When the heating temperature of the heating component is greater than the protection shutdown temperature, the heating component of the steam generator is controlled to stop heating until the heating temperature is less than the protection restart temperature and then reheated; the protection shutdown temperature and the protection restart temperature are both obtained by the protection threshold.

10. A steam generation control device, characterized in that: The device comprises: A data acquisition module, used to acquire a set temperature and a measured temperature of a box of a steam-bake machine; the box of the steam-bake machine is connected to a steam generator of the steam-bake machine; A heating module, used for controlling the heating component of the steam generator to heat according to the set temperature of the box and the measured temperature of the box; the steam generator comprises a water tank, the heating component and a water pump, the water tank is connected to the heating component through a water channel, and the water pump is arranged in the water channel; The steam generating module is used to control the working state of the water pump of the steam generator when the heating temperature of the heating component meets the preset temperature condition; the water pump is used to transfer the water in the water tank to the heating component, the heating component evaporates the water to generate steam, and the box is used to collect the steam.

11. A steaming and baking machine, characterized in that: The steam-bake machine comprises a box, a steam generator and a controller, wherein the box is connected to the steam generator, the steam generator comprises a water tank, a heating component and a water pump, the water tank is connected to the heating component via a water channel, the water pump is arranged in the water channel, and the controller connects the box, the heating component and the water pump; The water pump is used to transfer water in the water tank to the heating component, the heating component evaporates water to generate steam, the box is used to collect the steam, and the controller is used to control the steam generator to generate steam based on the method described in any one of claims 1-9.

12. The steaming and baking machine according to claim 11, characterized in that: The steam-bake machine further comprises a temperature sensing package, which is arranged on the box body and the heating component and connected to the controller, and is used for collecting the actual measured temperature of the box body and the heating temperature of the heating component.

13. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 9 are implemented.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 9 are implemented.

15. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 9 are implemented.

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