Control method of air fryer, air fryer and computer readable storage medium

Abstract

The embodiment of the invention provides a control method of an air fryer, the air fryer and a computer readable storage medium, and relates to the technical field of cooking equipment. The method comprises the following steps: acquiring a set temperature and a set time length in response to a working instruction corresponding to a cooking function, starting timing, and acquiring a timing time length; obtaining the top temperature and the middle temperature of the cooking cavity in real time; according to the set temperature, the top temperature and the middle temperature, the upper heating piece and the middle heating piece are controlled to work, and the cooking cavity is heated; and when the timing duration reaches the set duration, the upper heating piece and the middle heating piece are turned off, so that the cooking temperature uniformity is improved, and meanwhile, the food coloring uniformity in the cooking process is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cooking equipment, and in particular to a control method for an air fryer, an air fryer and a computer-readable storage medium. Background Art

[0002] An air fryer is a machine that can use air to "fry". It mainly uses air to replace the hot oil in the frying pan to cook the food. At the same time, the hot air blows away the moisture on the surface of the food, making the ingredients achieve an effect similar to that of frying.

[0003] At present, most air fryers use a single heat source for heating, that is, a heating element and a fan are arranged above the cooking chamber of the air fryer. When cooking, the heating element and the fan are turned on, and the fan continuously blows the high-temperature air near the heating element into the cooking chamber, so that the air in the cooking chamber circulates quickly, and finally achieves the effect of high-temperature air wrapping the food.

[0004] The current single-heat-source air fryer has a certain problem of uneven temperature distribution. Figure 1 As shown in the figure, in a single heat source air fryer, the fan will generate high temperature air at Figure 1 The high-temperature air is first blown into the cooking cavity and diffused around, and then refluxed from the middle to complete the cycle. The heat in the refluxed air is partly consumed by the food, so the middle of the cooking cavity (i.e. Figure 1 The area indicated by the dotted line in the middle will produce a cold air zone with insufficient temperature, resulting in uneven temperature distribution in the cooking chamber, which may cause uneven coloring of the food surface. When the food volume is large, the food may even be partially raw and partially cooked, thus affecting the user's cooking experience. In other words, the current single-heat source air fryer has the problem of uneven heating temperature. Summary of the invention

[0005] The embodiments of the present application provide a control method for an air fryer, an air fryer, and a computer-readable storage medium to solve the problem of uneven heating temperature in current single-heat-source air fryers.

[0006] In a first aspect, an embodiment of the present application provides a control method for an air fryer, which is applied to an air fryer, wherein the air fryer comprises a cooking cavity, an upper heating element and a middle heating element; the upper heating element is located above the cooking cavity; the middle heating element is located on the side of the cooking cavity; the method comprises: in response to a work instruction corresponding to a cooking function, obtaining a set temperature and a set duration, starting timing, and obtaining the timing duration; obtaining the top temperature and the middle temperature of the cooking cavity in real time; according to the set temperature, the top temperature and the middle temperature, controlling the upper heating element and the middle heating element to work and heat the cooking cavity; when the timing duration reaches the set duration, turning off the upper heating element and the middle heating element.

[0007] In a second aspect, an embodiment of the present application provides a control device for an air fryer, which is applied to an air fryer, and the air fryer includes a cooking cavity, an upper heating element, and a middle heating element; the upper heating element is located above the cooking cavity; the middle heating element is located in the middle of the side of the cooking cavity; the device includes: an instruction response module, which is used to respond to the work instruction corresponding to the cooking function, obtain the set temperature and set time, and start timing to obtain the timing time; a temperature acquisition module, which is used to obtain the top temperature and the middle temperature of the cooking cavity in real time; a first device control module, which is used to control the upper heating element and the middle heating element to work according to the set temperature, the top temperature and the middle temperature, so as to heat the cooking cavity; a second device control module, which is used to turn off the upper heating element and the middle heating element when the timing time reaches the set time.

[0008] In a third aspect, an embodiment of the present application provides an air fryer, comprising: a cooking cavity; an upper heating element located above the cooking cavity; a middle heating element located on the side of the cooking cavity; a memory and a processor, wherein an application is stored on the memory, and the application is configured to, when called by the processor, enable the air fryer to execute the method described above.

[0009] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a program code is stored, and the program code is used to execute the method as described above when called by a processor.

[0010] The control method, air fryer and computer-readable storage medium provided in the embodiments of the present application can adjust the working state of the upper heating element and the middle heating element in real time according to the set temperature, the top temperature and the middle temperature, so as to achieve precise temperature control. At the same time, with the cooperation of the upper heating element and the middle heating element, the entire cooking cavity can be evenly heated, the temperature uniformity in the cooking cavity is improved, and the color uniformity of the surface of the food is improved, so as to solve the problem of uneven heating temperature existing in the current single-heat source air fryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0012] Figure 1 A schematic structural diagram of a single heat source air fryer provided by an exemplary embodiment of the present application is shown;

[0013] Figure 2 The structural schematic diagram of the air fryer provided in the embodiment of the present application is shown;

[0014] Figure 3 A schematic flow chart of a control method for an air fryer provided in an embodiment of the present application is shown;

[0015] Figure 4 A schematic flow chart of a control method for an air fryer provided in another embodiment of the present application is shown;

[0016] Figure 5 A schematic flow chart of a control method for an air fryer provided in another embodiment of the present application is shown;

[0017] Figure 6 A schematic flow chart of a control method for an air fryer provided in yet another embodiment of the present application is shown;

[0018] Figure 7 A schematic diagram of the structure of a control device for an air fryer provided in an embodiment of the present application is shown;

[0019] Figure 8 A schematic structural diagram of an air fryer provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0021] See also Figure 2 , Figure 2 The air fryer 100 includes a cooking cavity 110 , a fan 120 , an upper heating element 130 , and a middle heating element 140 .

[0022] In this embodiment, the upper heating element 130 is arranged above the cooking cavity 110, the middle heating element 140 is arranged on the side of the cooking cavity 110, and the fan 120 is arranged above the upper heating element 130 and faces the upper heating element 130. When the air fryer 100 is working, the upper heating element 130 and the middle heating element 140 are used to heat the food in the cooking cavity 110, and the fan 120 includes a motor and a fan blade. The rotation of the motor drives the fan blade to rotate, and the heat generated by the upper heating element 130 and the middle heating element 140 is blown to various places in the cooking cavity 110, so as to evenly heat the food in the cooking cavity 110, and at the same time, the heat in the cooking cavity 100 is prevented from overflowing from the cooking cavity 110 as much as possible, thereby ensuring that the food is evenly heated and the surface of the food is evenly colored.

[0023] The upper heating element 130 may be a dry-burning electric heating tube. When working, the dry-burning electric heating tube uses air as a medium to transfer heat to the surrounding air, and then cooperates with the fan 120 to blow high-temperature air into the cooking cavity to heat the food. The upper heating element 130 may be a linear dry-burning electric heating tube or a curved dry-burning electric heating tube. The curved dry-burning electric heating tube may include but is not limited to a U-shaped dry-burning electric heating tube, an M-shaped dry-burning electric heating tube, and an O-shaped dry-burning electric heating tube.

[0024] The middle heating element 140 can be an electric heating belt or a dry-burning electric heating tube. The middle heating element 140 can be arranged around the middle of the side of the cooking cavity 110 so as to evenly heat the middle area of ​​the cooking cavity 110 and avoid the cold wind zone that exists when the single-heat source air fryer is heated.

[0025] In some embodiments, such as Figure 2As shown, the air fryer 100 may further include a first sensor 150 and a second sensor 160. The first sensor 150 is disposed above the cooking cavity 110 and is used to detect the top temperature of the cooking cavity 110 in real time, and the second sensor 160 is disposed in the middle of the cooking cavity 110 and is used to detect the middle temperature of the cooking cavity 110 in real time, so that during the operation of the air fryer 100, the fan 120, the upper heating element 130 and the middle heating element 140 are controlled in real time according to the top temperature and the middle temperature of the cooking cavity 110, thereby realizing a precise temperature control function.

[0026] In some embodiments, the first sensor 150 may be disposed around the upper heating element 130, for example, Figure 2 As shown, the first sensor 150 can be disposed above the cooking cavity 110 and on one side of the upper heating element 130. The first sensor 150 can be a negative temperature coefficient (NTC) thermistor sensor. The second sensor 160 can be disposed around the middle heating element 140. For example, Figure 2 As shown, the second sensor 160 may be disposed at any position in the middle of the side of the cooking cavity 110 and close to the middle heating member 140 , and the second sensor 160 may be a negative temperature coefficient thermistor sensor.

[0027] It should be noted that within the temperature range of -55 degrees Celsius (℃) to 200 degrees Celsius, the negative temperature coefficient thermistor sensor has the advantages of high sensitivity, strong stability, high precision and low cost. Since the fan 120 transfers the heat generated by the upper heating element 130 to the cooking cavity 110 through air circulation, the temperature range of the top of the cooking cavity 110 can be suitable for the negative temperature coefficient thermistor sensor; in some embodiments, the power of the middle heating element 140 can be less than that of the upper heating element 130. In this case, the temperature range of the middle of the cooking cavity 110 can also be suitable for the negative temperature coefficient thermistor sensor. In some embodiments, when the temperature around the upper heating element 130 or the middle heating element 140 exceeds 200 degrees Celsius, that is, it exceeds the measurement range of the negative temperature coefficient thermistor sensor, at this time, a thermocouple sensor with a larger measurement range can be used for temperature measurement.

[0028] In some embodiments, the air fryer 100 may further include a control unit (not shown in the figure), which is used to calculate the temperature change rate according to the top temperature detected by the first sensor 150, and determine multiple temperature offset values ​​according to the temperature change rate, so as to achieve accurate temperature control according to the multiple temperature offset values, wherein the specific control process of the control unit is referred to in the relevant part below, which will not be described in detail here. The control unit may be a micro control unit (MCU) or other electronic device with data processing capability.

[0029] See also Figure 3 , Figure 3 A flow chart of a control method for an air fryer provided in an embodiment of the present application is shown. The control method for an air fryer can be applied to a control device for an air fryer or an air fryer. The control method for an air fryer can specifically include the following steps S110 to S140.

[0030] Step S110: In response to the working instruction corresponding to the cooking function, the set temperature and the set duration are obtained, the timing is started, and the timing duration is obtained.

[0031] The air fryer has multiple cooking functions, such as air frying and baking. Each cooking function corresponds to a working instruction, a set time and a set temperature, wherein the working instruction is used to start the cooking function corresponding to the working instruction and control the air fryer to start working.

[0032] In some embodiments, each cooking function may correspond to a function start button. When a user presses a function start button for starting a cooking function, a work instruction for the cooking function is triggered.

[0033] In some other embodiments, the air fryer has a start button, and each cooking function may correspond to a function selection button. After the user presses the start button, if he presses a function selection button, a function selection instruction corresponding to the function selection button is triggered. In response to the function selection instruction, a cooking function corresponding to the function selection instruction may be determined, wherein the function selection instruction refers to an instruction for selecting from the preset cooking functions of the air fryer. Afterwards, if the user presses the start button, a work instruction corresponding to the cooking function may be triggered.

[0034] For example, the air fryer is provided with a start button and a plurality of function selection buttons for cooking functions. The user puts the food into the cooking cavity, connects the power supply of the air fryer, and after pressing the start button, the user can select the cooking function by pressing a function selection button. For example, if the user presses the function selection button corresponding to the "tender roast mode", the cooking function can be determined to be the tender roast function. When the start button is pressed, the working instruction for the tender roast function is triggered successfully.

[0035] In some other embodiments, the air fryer has a voice recognition function, and each cooking function may correspond to at least one keyword related to the cooking function. If the air fryer recognizes that the user says at least one keyword related to a cooking function, it may trigger the generation of a work instruction related to the cooking function.

[0036] In the embodiment of the present application, a timer can be used for real-time timing, and the timing duration refers to the actual cooking duration of this cooking, and the actual cooking duration refers to the total time taken from the start of the air fryer to the present. In some embodiments, in order to increase visibility, the remaining cooking time can be obtained by subtracting the timing duration from the set duration, and the remaining cooking time can be displayed through the display module of the air fryer to show the remaining cooking time to the user in real time to enhance the user experience, wherein the remaining cooking time is displayed in a countdown manner.

[0037] Step S120: Acquire the top temperature and the middle temperature of the cooking cavity in real time.

[0038] When the timing starts in response to the work instruction, the initial temperature of the top of the cooking cavity can be obtained through the first sensor, so that the temperature change rate can be calculated based on the initial temperature, and multiple temperature offset values ​​can be determined based on the temperature change rate, so as to achieve precise temperature control based on the multiple temperature offset values. During the entire cooking process, the top temperature of the cooking cavity can be measured in real time by the first sensor in the air fryer, and the middle temperature of the cooking cavity can be measured in real time by the second sensor in the air fryer.

[0039] Step S130: According to the set temperature, the top temperature and the middle temperature, the upper heating element and the middle heating element are controlled to operate to heat the cooking cavity.

[0040] Before introducing how to control the operation of the upper heating element and the middle heating element, a plurality of temperature critical values ​​used to divide the cooking stages to achieve precise temperature control in an embodiment of the present application are introduced, namely, the first temperature, the second temperature, the third temperature, the fourth temperature, the fifth temperature, the sixth temperature, the seventh temperature and the eighth temperature.

[0041] After obtaining the set temperature for this cooking, you can obtain the first temperature offset value (move1), the second temperature offset value (move2), the third temperature offset value, the fourth temperature offset value, the fifth temperature offset value, the sixth temperature offset value, the seventh temperature offset value (move7) and the eighth temperature offset value (move8); calculate the difference between the set temperature and the first temperature offset value as the first temperature; calculate the difference between the set temperature and the second temperature offset value as the second temperature; calculate the difference between the set temperature and the third temperature offset value as the third temperature; calculate the difference between the set temperature and the fourth temperature offset value as the fourth temperature; calculate the difference between the set temperature and the fifth temperature offset value as the fifth temperature; calculate the difference between the set temperature and the sixth temperature offset value as the sixth temperature; calculate the sum of the set temperature and the seventh temperature offset value as the seventh temperature; calculate the sum of the set temperature and the eighth temperature offset value as the eighth temperature.

[0042] Wherein, since there is a temperature difference at different positions in the cooking cavity, the temperature of the top or side measured by the sensor needs to be compared with the temperature after the position offset of the set temperature at the center of the cavity. Wherein, the first temperature offset value, the second temperature offset value, the seventh temperature offset value and the eighth temperature offset value are pre-set temperature values. The first temperature offset value and the second temperature offset value are usually set to be greater than or equal to 10 degrees Celsius. For example, the first temperature offset value and the second temperature offset value can both be 10 degrees Celsius. The seventh temperature offset value and the eighth temperature offset value are usually set to be greater than or equal to 10 degrees Celsius. For example, the seventh temperature offset value and the eighth temperature offset value can be 10 degrees Celsius.

[0043] In order to improve the accuracy of temperature control, the third temperature offset value, the fourth temperature offset value, the fifth temperature offset value and the sixth temperature offset value in the embodiment of the present application can be determined according to the temperature change rate of this cooking. Specifically, after the set temperature is obtained, the endpoint temperature can be calculated according to the set temperature, wherein the endpoint temperature is set to be less than the first temperature. For example, one third of the set temperature can be used as the endpoint temperature. In the first stage, if the top temperature reaches the endpoint temperature, the timing duration at the current moment can be obtained as the time taken for the cooking cavity to be heated from the beginning to reach the endpoint temperature. When the timing duration when the top temperature reaches the endpoint temperature is obtained, the temperature change rate can be calculated based on the initial temperature, the endpoint temperature and the timing duration when the top temperature reaches the endpoint temperature.

[0044] In some embodiments, the difference between the endpoint temperature and the initial temperature can be calculated as the temperature change, and the ratio of the temperature change to the timing duration at the current moment can be calculated as the temperature change rate. In other embodiments, a horizontal and vertical coordinate system can be established, with the horizontal axis representing time and the vertical axis representing temperature. A straight line is fitted according to the initial temperature, the endpoint temperature, and the timing duration when the top temperature reaches the endpoint temperature. The slope of the straight line is the temperature change rate. For example, the time corresponding to one endpoint of the straight line is 0 and the temperature corresponding to the endpoint is the initial temperature, and the time corresponding to the other endpoint of the straight line is the timing duration when the top temperature reaches the endpoint temperature and the temperature corresponding to the endpoint is the endpoint temperature. In order to improve the temperature control accuracy, in some embodiments, a line segment (straight line segment or curve segment) can also be fitted according to the initial temperature, the timing duration in the entire process from the start of timing to the top temperature reaching the endpoint temperature, and its corresponding top temperature, the endpoint temperature, and the timing duration when the top temperature reaches the endpoint temperature, and the average slope of the line segment is taken as the temperature change rate.

[0045] When determining the temperature change rate of this cooking, the compensation value of the third temperature offset value, the compensation value of the fourth temperature offset value, the compensation value of the fifth temperature offset value, and the compensation value of the sixth temperature offset value corresponding to the temperature change rate can be obtained based on the correspondence between the preset temperature change rate and the compensation value. The temperature change rate and the compensation value have a preset correspondence, which includes the preset correspondence between the temperature change rate and the compensation value of the third temperature offset value, the temperature change rate and the compensation value of the fourth temperature offset value, the temperature change rate and the compensation value of the fifth temperature offset value, and the temperature change rate and the compensation value of the sixth temperature offset value. The correspondence can be stored in the form of a table or in the form of a database, which is not specifically limited here.

[0046] The preset base value (move3) of the third temperature offset value, the base value (move4) of the fourth temperature offset value, the base value (move5) of the fifth temperature offset value, and the base value (move6) of the sixth temperature offset value can be obtained; the sum of the base value and the compensation value of the third temperature offset value is calculated as the third temperature offset value; the sum of the base value and the compensation value of the fourth temperature offset value is calculated as the fourth temperature offset value; the sum of the base value and the compensation value of the fifth temperature offset value is calculated as the fifth temperature offset value; the sum of the base value and the compensation value of the sixth temperature offset value is calculated as the sixth temperature offset value. The base value of the third temperature offset value and the base value of the fourth temperature offset value are usually set to be greater than or equal to 10 degrees Celsius, for example, the base value of the third temperature offset value and the base value of the fourth temperature offset value can be 10 degrees Celsius. The base value of the fifth temperature offset value and the base value of the sixth temperature offset value are usually set to be greater than or equal to 5 degrees Celsius, for example, the base value of the fifth temperature offset value and the base value of the sixth temperature offset value can be 5 degrees Celsius. As shown in Table 1, based on the above-mentioned first to eighth temperatures, the cooking process can be divided into multiple cooking stages as shown in Table 1, namely the first stage, the second stage, the third stage, the fourth stage and the fifth stage. How to control the upper heating element and the middle heating element in each stage can also be shown in Table 1.

[0047] Table 1

[0048]

[0049]

[0050] As shown in Table 1, when cooking starts, the first stage is entered. In the first stage, the top temperature is less than or equal to the first temperature and the middle temperature is less than or equal to the second temperature. The temperature in the cooking cavity is relatively low. In this case, the upper heating element and the middle heating element can be continuously controlled to work with their respective preset powers, so that the temperature in the cooking cavity rises rapidly. The preset power can be the rated power, which is not limited in the embodiment of the present application.

[0051] After entering the first stage, when the top temperature reaches the first temperature and the middle temperature reaches the second temperature, the second stage is entered. In the second stage, the top temperature is greater than the first temperature and the middle temperature is greater than the second temperature. When entering the second stage, the upper heating element and the middle heating element can still be controlled to work with their respective preset powers to make the temperature continue to rise.

[0052] After entering the second stage, when the top temperature reaches the third temperature and the middle temperature reaches the fourth temperature, the third stage is entered, in which the top temperature is greater than the third temperature and the middle temperature is greater than the fourth temperature. When entering the third stage, the upper heating element can be turned off, and the power of the middle heating element can be adjusted according to the set temperature and the top temperature, and the middle heating element can be controlled to work with the adjusted power.

[0053] After the rapid heating in the first and second stages, the temperature in the cooking cavity has reached the optimal cooking temperature for food. At this time, the temperature in the cooking cavity needs to be stabilized within a certain range. By turning off the upper heating element and adjusting the power of the middle heating element in the third stage, the temperature in the cooking cavity is prevented from continuing to rise, thereby reducing the occurrence of food being burnt.

[0054] For example, the difference between the set temperature and the top temperature can be calculated in real time; based on the correspondence between the preset difference and the power adjustment amount of the intermediate heating element, the power reduction amount of the intermediate heating element corresponding to the difference is determined, and the correspondence is a negative correlation correspondence; based on the power adjustment amount of the intermediate heating element, the power of the intermediate heating element is adjusted. The correspondence between the power adjustment amount of the intermediate heating element and the difference between the set temperature and the top temperature can be stored in the form of a table or in the form of a database.

[0055] After the continuous heating in the second stage, when the top temperature reaches the third temperature and the middle temperature reaches the fourth temperature, the temperature in the cooking cavity needs to be stabilized within a range, so the upper heating element is turned off; and since the corresponding relationship is a negative correlation, that is, the closer the top temperature is to the set temperature, the greater the power reduction of the middle heating element, and the lower the power of the middle heating element. When the top temperature reaches the set temperature, the power of the middle heating element can be reduced to 0, that is, the middle heating element is turned off when the top temperature reaches the set temperature. Therefore, during the third stage, the temperature in the cooking cavity will continue to decrease after rising to a certain height.

[0056] After entering the third stage, when the top temperature drops to the fifth temperature or the middle temperature drops to the sixth temperature, the fourth stage is entered. When entering the fourth stage, the upper heating element and the middle heating element can be controlled again to work with their respective preset powers.

[0057] In the third stage, the temperature in the cooking cavity continues to decrease. In order to keep the temperature within a certain range, when the top temperature drops to the fifth temperature or the middle temperature drops to the sixth temperature, it is necessary to heat again. Therefore, the upper heating element and the middle heating element are controlled to work at their respective preset powers to make the temperature in the cooking cavity rise rapidly, thereby keeping the temperature in the cooking cavity within a certain range.

[0058] After entering the fourth stage, when the top temperature reaches the seventh temperature or the middle temperature reaches the eighth temperature, the fifth stage is entered, in which the top temperature is greater than the seventh temperature or the middle temperature is greater than the eighth temperature. When entering the fifth stage, the upper heating element and the middle heating element can be turned off.

[0059] After the fourth stage, the temperature in the cooking cavity rises to a certain level. In order to keep the temperature in the cooking cavity within a certain range, the upper heating element and the middle heating element need to be turned off, that is, the heating needs to be stopped so as to dissipate the heat, achieve a cooling effect, and reduce the occurrence of food being burnt.

[0060] In some embodiments, after entering the fifth stage, when the timing reaches the set time, cooking can be ended, and the upper heating element and the middle heating element can be turned off, that is, step S140 is executed. In order to remind the user to eat the food in time, a prompt message can be sent to the user when the timing reaches the set time to inform the user that the cooking process has ended and the food can be taken out for eating, wherein the prompt message can be sent by playing a prompt sound.

[0061] In some other embodiments, if the set time is long, after entering the fifth stage, the temperature in the cooking cavity continues to decrease. When the top temperature drops to the fifth temperature or the middle temperature drops to the sixth temperature, the fourth stage can be entered again, and the upper heating element and the middle heating element can be controlled to work at their respective rated powers again, so as to prevent the food from getting cold and achieve a heat preservation effect. After entering the fourth stage again, if the top temperature rises back to the seventh temperature or the middle temperature rises back to the eighth temperature, in order to avoid overcooking the food, the fifth stage can be entered again until the timing reaches the set time, and the cooking is terminated. In the case of a long set time, by alternately performing the control operations of the upper heating element and the middle heating element in the fourth stage and the fifth stage, the temperature of the cooking cavity can be controlled to always remain within a certain range (that is, the top temperature is between the fifth and seventh temperatures, or the middle temperature is between the sixth and eighth temperatures), so as to achieve a heat preservation effect on the food.

[0062] S140: When the timing duration reaches the set duration, the upper heating element and the middle heating element are turned off.

[0063] The control method of the air fryer provided in the embodiment of the present application, upon receiving the work instruction corresponding to the cooking function, obtains the set temperature and set time corresponding to the cooking function, and starts timing; during the cooking process, the top temperature and the middle temperature in the cooking cavity are obtained in real time through the corresponding sensor, and the cooking process is divided into multiple stages according to the top temperature and the middle temperature; for each stage, the working state of the upper heating element and the middle heating element is adjusted in real time according to the set temperature, the top temperature and the middle temperature, so as to achieve more accurate temperature control. At the same time, with the cooperation of the upper heating element and the middle heating element, the uniformity of the temperature in the cooking cavity is improved, and the uniformity of the coloring of the surface of the food is improved, thereby solving the problem of uneven heating temperature existing in the current single-heat source air fryer.

[0064] See also Figure 4 , Figure 4 A flow chart of a control method for an air fryer provided in another embodiment of the present application is shown. The control method for an air fryer can be applied to a control device for an air fryer or an air fryer. The control method for an air fryer can specifically include the following steps S210 to S240.

[0065] Step S210: In response to the work instruction corresponding to the cooking function, the set temperature and the set duration are obtained, the timing is started, and the timing duration is obtained.

[0066] Step S220: Acquire the top temperature and the middle temperature of the cooking cavity in real time.

[0067] For the specific implementation of steps S210 to S220, please refer to steps S110 to S120 in the aforementioned embodiment, which will not be described in detail in the embodiment of the present application.

[0068] Step S230: According to the set temperature, the top temperature and the middle temperature, the fan, the upper heating element and the middle heating element are controlled to operate to heat the cooking cavity.

[0069] As described in the above-mentioned embodiment, after the entire cooking process is divided into different cooking stages, for each different cooking stage, the fan can be controlled to perform the corresponding operation.

[0070] In some embodiments, in the first stage, the fan can be controlled to rotate at a first preset speed to blow the heat generated by the upper heating element and the middle heating element into the cooking cavity as quickly as possible, thereby rapidly increasing the temperature in the cooking cavity. The first preset speed may be the maximum speed of the fan, which is not limited in the present embodiment.

[0071] In some embodiments, after the rapid heating in the first stage, in the second stage, the temperature in the cooking cavity needs to be adjusted more accurately, and the heating speed needs to be slowed down, but the heating still needs to be maintained. Therefore, in the second stage, the speed of the fan can be adjusted to a second preset speed according to the cooking function, the top temperature and the middle temperature, and the fan is controlled to rotate at the second preset speed. The second preset speed is less than the first preset speed, thereby slowing down the heating speed in the cooking cavity.

[0072] In some embodiments, each cooking function has a corresponding relationship with the preset speed of the fan in different pre-set temperature intervals. For example, the temperature interval in which the top temperature is greater than the first temperature and less than or equal to the third temperature, and the middle temperature is greater than the second temperature and less than or equal to the fourth temperature is divided into the first temperature interval, and the temperature interval in which the top temperature is greater than the third temperature and less than or equal to the fifth temperature, and the middle temperature is greater than the fourth temperature and less than or equal to the sixth temperature is divided into the second temperature interval, then the preset speed of the fan in the first temperature interval under cooking function A can be set to M revolutions per minute, and the preset speed of the fan in the second temperature interval can be set to N revolutions per minute. The preset speed of the fan in the temperature interval corresponding to the second stage under this cooking function (that is, the temperature interval in which the top temperature is greater than the first temperature and less than or equal to the third temperature, and the middle temperature is greater than the second temperature and less than or equal to the fourth temperature) (that is, the aforementioned second preset speed) can be obtained, and the fan speed in the second stage is adjusted to the preset speed when entering the second stage. Setting the preset speed for the temperature interval of each cooking function can achieve precise temperature control.

[0073] In other embodiments, in order to reduce the amount of data considered when analyzing and setting the preset speed, each cooking function may be set to have a preset speed of the fan in different cooking stages, that is, the preset speed is set for different cooking stages (for example, the second stage and the third stage) under each cooking function, rather than setting the preset speed for the temperature range, because each cooking function has a second stage and a third stage, and the temperature range of the second stage and the third stage corresponding to each cooking function needs to be determined according to the actual upper heating element, the middle heating element and the fan, and is not fixed every time. For example, the preset speed of the fan in the second stage of cooking function A is M revolutions per minute, and the preset speed of the fan in the third stage of cooking function A is N revolutions per minute. The preset speed of the fan in the second stage of this cooking function (that is, the aforementioned second preset speed) can be obtained, and the fan speed is adjusted to the preset speed when entering the second stage.

[0074] In some embodiments, after entering the third stage, the speed of the fan can be adjusted to a third preset speed according to the cooking function, the top temperature and the middle temperature, and the fan is controlled to rotate at the third preset speed, wherein the third preset speed is less than the first preset speed.

[0075] As mentioned above, in some embodiments, the temperature range is divided, and each cooking function has a corresponding relationship with the preset speed of the fan in different preset temperature ranges. Then, the preset speed of the fan in the temperature range corresponding to the third stage of this cooking function (i.e., the temperature range in which the top temperature is greater than the third temperature and less than or equal to the fifth temperature, and the middle temperature is greater than the fourth temperature and less than or equal to the sixth temperature) (i.e., the third preset speed) can be obtained, and the fan speed is adjusted to the preset speed when entering the third stage. In other embodiments, the cooking stage is divided, and each cooking function has a corresponding relationship with the preset speed of the fan in different cooking stages. Then, the preset speed of the fan corresponding to the third stage of this cooking function (i.e., the third preset speed) can be obtained, and the fan speed is adjusted to the preset speed when entering the third stage.

[0076] In some embodiments, in the late third stage, the temperature in the cooking cavity continues to decrease, and after entering the fourth stage, in order to stabilize the overall temperature in the cooking cavity within a certain range, it is necessary to heat again. Therefore, in order to cooperate with the upper heating element and the middle heating element, the fan can be controlled to rotate at a first preset speed, so that the temperature in the cooking cavity rises rapidly.

[0077] In some embodiments, in the fifth stage, in order to prevent the food from being burnt due to excessive temperature, the entire cooking cavity needs to be cooled down. Therefore, while the upper heating element and the middle heating element are turned off, the fan can be controlled to rotate at a first preset speed to quickly dissipate the heat and achieve a cooling effect.

[0078] Step S240: When the timing duration reaches the set duration, the fan, the upper heating element and the middle heating element are turned off.

[0079] The control method of the air fryer provided in the embodiment of the present application adjusts the speed of the fan according to the stage of the temperature in the cooking cavity, and cooperates with the heating element and the intermediate heating element to achieve more precise control of the temperature in the cooking cavity, thereby improving cooking efficiency and heating uniformity.

[0080] For some examples, see Figure 5 Before the above step S240, the control method of the air fryer also includes steps S250 and S260. Steps S250 and S260 can be executed in the entire process from the start to the end of the air fryer to avoid excessive temperature in the cooking cavity, thereby ensuring the safety of the air fryer.

[0081] Step S250: When the top temperature is greater than the first preset threshold (temp1) or the middle temperature is greater than the second preset threshold (temp2), record the current power of the upper heating element and the middle heating element and the current speed of the fan, turn off the upper heating element and the middle heating element, and control the fan to rotate at the maximum speed.

[0082] The first preset threshold and the second preset threshold are pre-set and are temperature values ​​for triggering the high temperature protection operation. The first preset threshold and the second preset threshold are usually set to be greater than or equal to 220 degrees Celsius. For example, both the first preset threshold and the second preset threshold can be 220 degrees Celsius.

[0083] It is understandable that some cooking functions correspond to higher cooking temperatures. During the continuous high-temperature heating process, the cooking cavity may overheat and cause certain damage to the air fryer itself. Therefore, during the entire cooking process, the top temperature and the middle temperature of the cooking cavity are monitored. When the top temperature is greater than the first preset threshold or the middle temperature is greater than the second preset threshold, it indicates that overheating has occurred in the cooking cavity and heat dissipation and cooling are required. During heat dissipation and cooling, turn off the upper heating element and the middle heating element, and make the fan rotate at the maximum speed to quickly dissipate heat inside the cooking cavity. Before heat dissipation, first record the current power of the upper heating element and the middle heating element and the current speed of the fan, so that after the heat dissipation is completed, the air fryer can be restored to the working state before the heat dissipation.

[0084] Step S260: When the top temperature is less than the third preset threshold and the middle temperature is less than the fourth preset threshold, the upper heating element and the middle heating element are controlled to continue working using their respective current powers, and the fan is controlled to rotate using the current speed, wherein the third preset threshold is less than the first preset threshold, and the fourth preset threshold is less than the second preset threshold.

[0085] The third preset threshold and the fourth preset threshold are pre-set and are the temperature values ​​that trigger the release of the high temperature protection operation. The third preset threshold and the fourth preset threshold can usually be set to be less than or equal to 120 degrees Celsius. For example, the third preset threshold and the fourth preset threshold can both be set to 120 degrees Celsius.

[0086] Based on step S250 and step S260, when overheating occurs in the cooking cavity, the current working state of the air fryer can be recorded, the heat in the cooking cavity can be dissipated, and the air fryer can continue cooking in the recorded working state after the heat is dissipated, thereby protecting the air fryer itself from damage due to overheating.

[0087] For some examples, see Figure 6Before step S240, the control method of the air fryer also includes steps S270 and S280. Steps S270 and S280 can be executed in the entire process from the start of the air fryer to the end of the work to ensure the safe use of the air fryer.

[0088] Step S270: In response to the switch corresponding to the cooking cavity being turned on, the current power of the upper heating element and the middle heating element and the current speed of the fan are recorded, and the fan, the upper heating element and the middle heating element are turned off.

[0089] During the cooking process, the user may open the cooking cavity to observe the cooking status of the ingredients. For example, assuming that the cooking cavity in the air fryer is in the shape of a drawer, the user can pull the cooking cavity out of the air fryer, and the displacement of the cooking cavity can trigger the micro switch inside the air fryer. In response to the triggering of the micro switch, the air fryer controls the fan, the upper heating element, and the middle heating element to turn off, which saves resources and prevents the fan from blowing out high-temperature air to scald the user, thereby improving safety. Before shutting down, the current power of the upper heating element and the middle heating element and the current speed of the fan are recorded at this time, so that when the cooking cavity is returned to its original position later, the air fryer is controlled to continue to perform the cooking steps before the cooking cavity is shifted.

[0090] It should be noted that in response to the switch corresponding to the cooking cavity being turned on, the timer pauses timing, and in response to the switch corresponding to the cooking cavity being turned off, the timer continues timing from the paused timing duration, to avoid the timer being in the timing state when the cooking cavity is opened, which affects the actual cooking time, the cooking effect of the food and the temperature control accuracy.

[0091] Step S280: In response to the switch corresponding to the cooking cavity being turned off, the upper heating element and the middle heating element are controlled to continue to work using their respective current powers, and the fan is controlled to rotate using the current speed.

[0092] Based on step S270 and step S280, when the user opens the cooking cavity, the upper heating element, the middle heating element and the fan are turned off, and when the cooking cavity is closed, the air fryer continues the cooking steps before opening, thereby saving resources and preventing the fan from blowing out high-temperature air to scald the user, thereby improving safety.

[0093] For ease of understanding, an exemplary embodiment is provided here to illustrate the control method of the above-mentioned air fryer. Assuming that the air fryer is an air fryer, before cooking, the user can pull the drawer-type cooking cavity out of the air fryer, put the ingredients into the cooking cavity, and then push the cooking cavity into the air fryer; connect the power supply of the air fryer, press the function button corresponding to the "tender baking mode", at this time, the air fryer obtains the pre-set set temperature and set time, and displays the countdown in the form of a stopwatch; the user presses the start button to start the cooking process. First, enter the first stage, the dry-burning electric heating tube above the cooking cavity (i.e., the upper heating element) and the electric belt (i.e., the middle heating element) in the middle of the cooking cavity are heated at their respective rated powers, and the fan arranged above the dry-burning electric heating tube rotates at the maximum speed (the first preset speed), and the temperature in the cooking cavity rises rapidly.

[0094] When the temperature detected by the first sensor (i.e., the top temperature) reaches the difference between the set temperature and 15 degrees Celsius (i.e., the first temperature offset value), and the temperature detected by the second sensor (i.e., the middle temperature) reaches the set temperature and 15 degrees Celsius (i.e., the second temperature offset value), the second stage is entered. In the second stage, the dry-burning electric heating tube and the electric belt are heated at their respective rated powers (preset powers), and the fan is controlled to rotate at the second preset speed corresponding to the second stage of the "tender baking mode".

[0095] When the temperature detected by the first sensor reaches the difference between the set temperature and "10 degrees Celsius (i.e., the base value of the third temperature offset value) + the compensation value of the third temperature offset value", and the temperature detected by the second sensor reaches the difference between the set temperature and "10 degrees Celsius (i.e., the base value of the fourth temperature offset value) + the compensation value of the fourth temperature offset value", the third stage is entered. In the third stage, the dry-burning electric heating tube is turned off, and the power of the electric belt is adjusted in real time according to the set temperature and the real-time top temperature of the cooking cavity, and the fan is controlled to rotate at the third preset speed corresponding to the third stage in the "tender roasting mode".

[0096] When the temperature detected by the first sensor reaches the difference between the set temperature and "5 degrees Celsius (i.e., the base value of the fifth temperature offset value) + the compensation value of the fifth temperature offset value", or when the temperature detected by the second sensor reaches the difference between the set temperature and "5 degrees Celsius (i.e., the base value of the sixth temperature offset value) + the compensation value of the sixth temperature offset value", the fourth stage is entered. In the fourth stage, the dry-burning electric heating tube and the electric belt are heated at their respective rated powers, and the fan rotates at the maximum speed (the first preset speed).

[0097] When the temperature detected by the first sensor rises to the set temperature + 10 degrees Celsius (i.e., the seventh temperature offset value), or the temperature detected by the second sensor rises to the set temperature + 10 degrees Celsius (i.e., the eighth temperature offset value), the fifth stage is entered. In the fifth stage, the dry-burning electric heating tube and the electric belt are turned off, and the fan rotates at the maximum speed (the first preset speed).

[0098] When the timing reaches the set time, the dry-burning electric heating tube, electric belt and fan are turned off to end the cooking process.

[0099] During the whole cooking process, the air fryer monitors the top temperature and the middle temperature in the cooking cavity in real time, and determines whether the top temperature is greater than 220 degrees Celsius (i.e., the first preset threshold value), or whether the middle temperature is greater than 220 degrees Celsius (i.e., the second preset threshold value), so as to protect the air fryer from ultra-high temperature. When the top temperature is greater than 220 degrees Celsius, or the middle temperature is greater than 220 degrees Celsius, it indicates that overheating has occurred in the cooking cavity. At this time, the power of the dry-burning heating tube and the current power of the electric belt are recorded, and the current speed of the fan is recorded. Then, the dry-burning heating tube and the electric belt are turned off, the countdown is paused, and the fan is rotated at the maximum speed to dissipate heat; when the top temperature and the middle temperature are both less than 120 degrees Celsius (i.e., the third preset threshold value and the fourth preset threshold value), the power of the dry-burning heating tube and the electric belt is restored to the current power, the fan is rotated at the current speed, and the countdown is continued to restore the normal cooking process.

[0100] During the cooking process, the user can pull out the drawer-type cooking chamber at any time to check the cooking status. When the cooking chamber is pulled out, the micro switch is triggered, the timing is paused, and the current power of the dry-burning electric heating tube and the electric belt and the current speed of the fan are recorded, and the fan, dry-burning electric heating tube and electric belt are turned off. When the user finishes checking and pushes the cooking chamber back, the micro switch is turned off, the timing continues, and the fan, dry-burning electric heating tube and electric belt continue to work in the state recorded when the cooking chamber was pulled out.

[0101] See also Figure 7 , Figure 7 The structure diagram of the control device 200 of the cooking device provided in the embodiment of the present application is shown. The control device 200 of the air fryer may include the following components: an instruction response module 210, which is used to respond to the working instruction corresponding to the cooking function, obtain the set temperature and the set time, and start timing to obtain the timing time; a temperature acquisition module 220, which is used to obtain the top temperature and the middle temperature of the cooking cavity in real time; a first device control module 230, which is used to control the upper heating element and the middle heating element to work according to the set temperature, the top temperature and the middle temperature to heat the cooking cavity; a second device control module 240, which is used to turn off the upper heating element and the middle heating element when the timing time reaches the set time.

[0102] In some embodiments, the first device control module 230 is also used to control the upper heating element and the middle heating element to operate with their respective preset powers when the top temperature is less than or equal to the first temperature and the middle temperature is less than or equal to the second temperature, wherein the first temperature is equal to the difference between the set temperature and the first temperature offset value, and the second temperature is equal to the difference between the set temperature and the second temperature deviation value.

[0103] In some embodiments, the first device control module 230 is also used to turn off the upper heating element in response to the top temperature being greater than the third temperature and the middle temperature being greater than the fourth temperature, adjust the power of the middle heating element according to the set temperature and the top temperature, and control the middle heating element to operate with the adjusted power, wherein the third temperature is equal to the difference between the set temperature and the third temperature offset value, and the fourth temperature is equal to the difference between the set temperature and the fourth temperature deviation value.

[0104] In some embodiments, the first device control module 230 is also used to calculate the difference between the set temperature and the top temperature in real time; based on the correspondence between the pre-set difference and the power reduction amount of the intermediate heating element, determine the power reduction amount of the intermediate heating element corresponding to the difference, and the correspondence is a negative correlation correspondence; based on the power adjustment amount of the intermediate heating element, adjust the power of the intermediate heating element.

[0105] In some embodiments, the first device control module 230 is also used to control the upper heating element and the middle heating element to operate with preset power again in response to the top temperature being greater than the fifth temperature or the middle temperature being greater than the sixth temperature, wherein the fifth temperature is equal to the difference between the set temperature and the fifth temperature offset value, and the sixth temperature is equal to the difference between the set temperature and the sixth temperature deviation value.

[0106] In some embodiments, the first device control module 230 is also used to turn off the upper heating element and the middle heating element in response to the top temperature being greater than the seventh temperature or the middle temperature being greater than the eighth temperature, wherein the seventh temperature is equal to the sum of the set temperature and the first temperature offset value, and the eighth temperature is equal to the sum of the set temperature and the eighth temperature deviation value.

[0107] In some embodiments, the first device control module 230 is also used to record the current power of the upper heating element and the middle heating element and turn off the upper heating element and the middle heating element in response to the top temperature being greater than the first preset threshold or the middle temperature being greater than the second preset threshold; in response to the top temperature being less than the third preset threshold and the middle temperature being less than the fourth preset threshold, control the upper heating element and the middle heating element to continue working with their respective current powers, wherein the third preset threshold is less than the first preset threshold, and the fourth preset threshold is less than the second preset threshold.

[0108] In some embodiments, the first device control module 230 is also used to record the current power of the upper heating element and the middle heating element respectively in response to the switch corresponding to the cooking cavity being turned on, and turn off the upper heating element and the middle heating element; in response to the switch corresponding to the cooking cavity being turned off, control the upper heating element and the middle heating element to continue working using their respective current powers.

[0109] In some embodiments, the control device 200 of the air fryer further includes a fan control module, which is used to control the fan to work according to the set temperature, the top temperature and the middle temperature, and to turn off the fan when the timing duration reaches the set duration.

[0110] In some embodiments, the fan control module is further configured to control the fan to rotate at a first preset speed when the top temperature is less than or equal to the first temperature and the middle temperature is less than or equal to the second temperature.

[0111] In some embodiments, the fan control module is also used to adjust the fan speed according to the cooking function, the top temperature and the middle temperature in response to the top temperature being greater than the first temperature and the middle temperature being greater than the second temperature, and control the fan to rotate at the adjusted speed.

[0112] In some embodiments, the fan control module is also used to control the fan to rotate at a second preset speed less than or equal to the first preset speed in response to the top temperature being greater than the first temperature and less than or equal to the third temperature, and the middle temperature being greater than the second temperature and less than or equal to the fourth temperature under the cooking function.

[0113] In some embodiments, the fan control module is further used to control the fan to rotate at a third preset speed in response to the top temperature being greater than the third temperature and the middle temperature being greater than the fourth temperature, where the third preset speed is less than or equal to the first preset speed.

[0114] In some embodiments, the fan control module is further configured to control the fan to rotate at a first preset speed in response to the top temperature being greater than the fifth temperature or the middle temperature being greater than the sixth temperature.

[0115] In some embodiments, the fan control module is also used to record the current speed of the fan and control the fan to rotate at the first preset speed in response to the top temperature being greater than the first preset threshold or the middle temperature being greater than the second preset threshold; and to control the fan to rotate at the current speed in response to the top temperature being less than the third preset threshold and the middle temperature being less than the fourth preset threshold, wherein the third preset threshold is less than the first preset threshold, and the fourth preset threshold is less than the second preset threshold.

[0116] In some embodiments, the fan control module is further used to record the current speed of the fan in response to the switch corresponding to the cooking cavity being turned on; and to control the fan to rotate at the current speed in response to the switch corresponding to the cooking cavity being turned off.

[0117] In some embodiments, the temperature threshold acquisition module is also used to obtain the initial temperature of the top of the cooking cavity when the timing starts; calculate the endpoint temperature according to the set temperature, the endpoint temperature is less than the first temperature; when the top temperature reaches the endpoint temperature, obtain the timing duration at the current moment as the time consumed by the cooking cavity from the beginning of being heated to reaching the endpoint temperature; calculate the temperature change rate of the cooking cavity from the beginning of being heated to reaching the endpoint temperature according to the initial temperature, the endpoint temperature and the timing duration at the current moment; determine the third temperature offset value, the fourth temperature offset value, the fifth temperature offset value and the sixth temperature offset value according to the temperature change rate.

[0118] In some embodiments, the temperature threshold acquisition module is also used to obtain the compensation value of the third temperature offset value, the compensation value of the fourth temperature offset value, the compensation value of the fifth temperature offset value, and the compensation value of the sixth temperature offset value corresponding to the temperature change rate based on the correspondence between the preset temperature change rate and the compensation value; obtain the preset base value of the third temperature offset value, the base value of the fourth temperature offset value, the base value of the fifth temperature offset value, and the base value of the sixth temperature offset value; calculate the sum of the base value and the compensation value of the third temperature offset value as the third temperature offset value; calculate the sum of the base value and the compensation value of the fourth temperature offset value as the fourth temperature offset value; calculate the sum of the base value and the compensation value of the fifth temperature offset value as the fifth temperature offset value; calculate the sum of the base value and the compensation value of the sixth temperature offset value as the sixth temperature offset value.

[0119] Those skilled in the art can clearly understand that the control device of the air fryer provided in the embodiment of the present application can implement the control method of the air fryer provided in the embodiment of the present application. The specific working process of the above modules can refer to the corresponding process of the control method of the air fryer in the embodiment of the present application, which will not be described here.

[0120] In the embodiments provided in the present application, the coupling, direct coupling or communication connection between the modules shown or discussed may be indirect coupling or communication coupling through some interfaces, devices or modules, and may be electrical, mechanical or other forms, and the embodiments of the present application are not limited to this.

[0121] In addition, each functional module in the embodiment of the present application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules, which is not limited in the embodiment of the present application.

[0122] See also Figure 8 , Figure 8 The schematic diagram of the structure of the air fryer provided by the embodiment of the present application is shown. The air fryer may include the following components: a cooking cavity 310; an upper heating element 320; a middle heating element 330; a memory 340; a processor 350; an application is stored in the memory 340, and the application is configured to execute the method described in the above embodiment when called by the processor 350.

[0123] Among them, the processor 350 may include one or more processing cores. The processor 350 uses various interfaces and lines to connect the various parts of the entire air fryer 300, and executes various functions of the electronic device and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 350, and calling data stored in the memory 340. The processor 350 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 350 can integrate one or more combinations of a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphics Processing Unit, GPU) and a modem. It is understandable that the above-mentioned modem may not be integrated into the processor 350, and can be implemented separately through a communication chip.

[0124] The memory 340 may include a random access memory (RAM) or a read-only memory (ROM). The memory 340 may be used to store instructions, programs, codes, code sets or instruction sets. The memory 340 may include a program storage area and a data storage area. The program storage area may store instructions for implementing an operating system, instructions for implementing at least one function, instructions for implementing the above-mentioned various method embodiments, etc. The data storage area may store data created by the air fryer 300 during use, etc.

[0125] An embodiment of the present application also provides a computer-readable storage medium, in which a program code is stored. The program code is used to execute the method described in the above method embodiment when called by a processor.

[0126] The computer readable storage medium may be an electronic storage such as a flash memory, an electrically erasable programmable read only memory (EEPROM), an electrically programmable read only memory (EPROM), a hard disk, or a read only memory (ROM). In some embodiments, the computer readable storage medium may include a non-transitory computer-readable storage medium (NTRSM). The computer readable storage medium has a storage space for the program code of any method step in the above method. These program codes can be read from or written to one or more computer program products. The program code can be compressed in an appropriate form.

[0127] The above are only preferred embodiments of the present application, and are not intended to limit the present application in any form. Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technical personnel in the field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present application. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A control method for an air fryer, characterized in that: Applied to an air fryer, the air fryer comprises a cooking cavity, an upper heating element and a middle heating element; the upper heating element is located above the cooking cavity; The middle heating element is located on the side of the cooking cavity; the method comprises: In response to the working instruction corresponding to the cooking function, the set temperature and the set duration are obtained, the timing is started, and the timing duration is obtained; Real-time acquisition of the top temperature and the middle temperature of the cooking cavity; According to the set temperature, the top temperature and the middle temperature, the upper heating element and the middle heating element are controlled to work to heat the cooking cavity; When the timing duration reaches the set duration, the upper heating element and the middle heating element are turned off.

2. The method according to claim 1, characterized in that The step of controlling the upper heating element and the middle heating element to work according to the set temperature, the top temperature and the middle temperature comprises: When the top temperature is less than or equal to the first temperature and the middle temperature is less than or equal to the second temperature, the upper heating element and the middle heating element are controlled to operate with their respective preset powers; wherein the first temperature is equal to the difference between the set temperature and the first temperature offset value, and the second temperature is equal to the difference between the set temperature and the second temperature deviation value.

3. The method according to claim 2, characterized in that After the step of controlling the upper heating element and the middle heating element to work with a preset power, the step of controlling the upper heating element and the middle heating element to work according to the set temperature, the top temperature and the middle temperature further includes: In response to the top temperature being greater than the third temperature and the middle temperature being greater than the fourth temperature, the upper heating element is turned off, the power of the middle heating element is adjusted according to the set temperature and the top temperature, and the middle heating element is controlled to operate with the adjusted power; wherein the third temperature is equal to the difference between the set temperature and the third temperature offset value, and the fourth temperature is equal to the difference between the set temperature and the fourth temperature deviation value.

4. The method according to claim 3, characterized in that The step of adjusting the power of the intermediate heating element according to the set temperature and the top temperature comprises: Calculating the difference between the set temperature and the top temperature in real time; Based on a preset correspondence relationship between the difference and the power reduction amount of the intermediate heating element, determining the power reduction amount of the intermediate heating element corresponding to the difference, wherein the correspondence relationship is a negative correlation correspondence relationship; The power of the intermediate heating element is adjusted based on the power adjustment amount of the intermediate heating element.

5. The method according to claim 4, characterized in that After the step of turning off the upper heating element, adjusting the power of the middle heating element according to the set temperature and the top temperature, and controlling the middle heating element to work with the adjusted power, the step of controlling the upper heating element and the middle heating element to work according to the set temperature, the top temperature, and the middle temperature further includes: In response to the top temperature being lower than the fifth temperature or the middle temperature being lower than the sixth temperature, the upper heating element and the middle heating element are controlled again to operate with preset power; wherein the fifth temperature is equal to the difference between the set temperature and the fifth temperature offset value, and the sixth temperature is equal to the difference between the set temperature and the sixth temperature deviation value.

6. The method according to claim 5, characterized in that After the step of controlling the upper heating element and the middle heating element to work at their respective rated powers again, the step of controlling the upper heating element and the middle heating element to work according to the set temperature, the top temperature and the middle temperature further includes: In response to the top temperature being greater than the seventh temperature or the middle temperature being greater than the eighth temperature, the upper heating element and the middle heating element are turned off; wherein the seventh temperature is equal to the sum of the set temperature and the first temperature offset value, and the eighth temperature is equal to the sum of the set temperature and the eighth temperature deviation value.

7. The method according to any one of claims 1 to 6, characterized in that: Before the step of turning off the upper heating element, the middle heating element and the lower heating element when the timing duration reaches the set duration, the method further comprises: In response to the top temperature being greater than a first preset threshold or the middle temperature being greater than a second preset threshold, recording the current power of each of the upper heating element and the middle heating element, and turning off the upper heating element and the middle heating element; In response to the top temperature being less than a third preset threshold and the middle temperature being less than a fourth preset threshold, the upper heating element and the middle heating element are controlled to continue working using their respective current powers, wherein the third preset threshold is less than the first preset threshold, and the fourth preset threshold is less than the second preset threshold.

8. The method according to any one of claims 1 to 6, characterized in that: Before the step of turning off the upper heating element and the middle heating element when the timing duration reaches the set duration, the method further comprises: In response to the switch corresponding to the cooking cavity being turned on, recording the current power of each of the upper heating element and the middle heating element, and turning off the upper heating element and the middle heating element; In response to the switch corresponding to the cooking cavity being turned off, the upper heating element and the middle heating element are controlled to continue to work using their respective current powers.

9. The method according to claim 6, characterized in that The air fryer further includes a fan, and the method further includes: Controlling the fan to work according to the set temperature, the top temperature and the middle temperature; When the timing duration reaches the set duration, the fan is turned off.

10. The method according to claim 9, characterized in that The step of controlling the fan to work according to the set temperature, the top temperature and the middle temperature comprises: When the top temperature is less than or equal to the first temperature and the middle temperature is less than or equal to the second temperature, the fan is controlled to rotate at a first preset speed.

11. The method according to claim 10, characterized in that After the step of controlling the fan to rotate at a first preset speed, the step of controlling the fan to work according to the set temperature, the top temperature and the middle temperature further includes: In response to the top temperature being greater than the first temperature and the middle temperature being greater than the second temperature, the speed of the fan is adjusted according to the cooking function, the top temperature and the middle temperature, and the fan is controlled to rotate at the adjusted speed.

12. The method according to claim 11, characterized in that The step of adjusting the speed of the fan according to the cooking function, the top temperature and the middle temperature, and controlling the fan to rotate at the adjusted speed includes: Under the cooking function, in response to the top temperature being greater than the first temperature and less than or equal to the third temperature, and the middle temperature being greater than the second temperature and less than or equal to the fourth temperature, the fan is controlled to rotate at a second preset speed, and the second preset speed is less than or equal to the first preset speed.

13. The method according to claim 12, characterized in that After the step of controlling the fan to rotate at the adjusted speed, the step of controlling the fan to work according to the set temperature, the top temperature and the middle temperature further includes: In response to the top temperature being greater than the third temperature and the middle temperature being greater than the fourth temperature, the fan is controlled to rotate at a third preset speed, where the third preset speed is less than or equal to the first preset speed.

14. The method according to claim 13, characterized in that After the step of controlling the fan to rotate at a third preset speed, the step of controlling the fan to work according to the set temperature, the top temperature and the middle temperature further includes: In response to the top temperature being lower than the fifth temperature or the middle temperature being lower than the sixth temperature, the fan is controlled to rotate at a first preset speed.

15. The method according to claim 9, characterized in that Before the step of shutting down the fan when the timing duration reaches the set duration, the method further comprises: In response to the top temperature being greater than a first preset threshold or the middle temperature being greater than a second preset threshold, recording the current speed of the fan, and controlling the fan to rotate at a first preset speed; In response to the top temperature being less than a third preset threshold and the middle temperature being less than a fourth preset threshold, the fan is controlled to rotate at the current speed, wherein the third preset threshold is less than the first preset threshold, and the fourth preset threshold is less than the second preset threshold.

16. The method according to claim 9, characterized in that Before the step of shutting down the fan when the timing duration reaches the set duration, the method further includes: In response to the switch corresponding to the cooking cavity being turned on, recording the current rotation speed of the fan; In response to the switch corresponding to the cooking cavity being turned off, the fan is controlled to rotate at the current speed.

17. The method according to any one of claims 6 or 9 to 16, characterized in that: The steps of obtaining the third temperature offset value, the fourth temperature offset value, the fifth temperature offset value, and the sixth temperature offset value include: When the timing starts, obtaining the initial temperature of the top of the cooking cavity; Calculating an endpoint temperature according to the set temperature, wherein the endpoint temperature is less than the first temperature; When the top temperature reaches the endpoint temperature, obtaining the current time duration as the time taken for the cooking cavity to reach the endpoint temperature from the beginning of heating; Calculating the temperature change rate of the cooking cavity from the beginning of heating to the end point temperature according to the initial temperature, the end point temperature and the timing duration at the current moment; The third temperature offset value, the fourth temperature offset value, the fifth temperature offset value, and the sixth temperature offset value are determined according to the temperature change rate.

18. The method according to claim 17, characterized in that The step of determining the third temperature offset value, the fourth temperature offset value, the fifth temperature offset value, and the sixth temperature offset value according to the temperature change rate comprises: Based on a preset correspondence between a temperature change rate and a compensation value, obtaining a compensation value of the third temperature offset value, a compensation value of the fourth temperature offset value, a compensation value of the fifth temperature offset value, and a compensation value of the sixth temperature offset value corresponding to the temperature change rate; Acquire a preset base value of the third temperature offset value, a preset base value of the fourth temperature offset value, a preset base value of the fifth temperature offset value, and a preset base value of the sixth temperature offset value; Calculating a sum of a base value and a compensation value of the third temperature offset value as the third temperature offset value; Calculating a sum of a base value and a compensation value of the fourth temperature offset value as the fourth temperature offset value; Calculating a sum of a base value and a compensation value of the fifth temperature offset value as the fifth temperature offset value; A sum of a base value and a compensation value of the sixth temperature offset value is calculated as the sixth temperature offset value.

19. A control device for an air fryer, characterized in that: Applied to an air fryer, the air fryer comprises a cooking cavity, an upper heating element, and a middle heating element; The upper heating element is located above the cooking cavity; The middle heating element is located on the side of the cooking cavity; the device comprises: The instruction response module is used to respond to the work instruction corresponding to the cooking function, obtain the set temperature and set time, start timing, and obtain the timing time; A temperature acquisition module, used for acquiring the top temperature and the middle temperature of the cooking cavity in real time; A first device control module, used for controlling the upper heating element and the middle heating element to work according to the set temperature, the top temperature and the middle temperature, so as to heat the cooking cavity; The second device control module is used to turn off the upper heating element and the middle heating element when the timing duration reaches the set duration.

20. An air fryer, characterized in that: include: Cooking chamber; an upper heating element, located above the cooking cavity; A middle heating element, located on the side of the cooking cavity; A memory and a processor, wherein an application is stored in the memory, and the application is configured to, when called by the processor, enable the air fryer to execute the method according to any one of claims 1 to 18.

21. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores program code, and the program code is configured to execute the method according to any one of claims 1 to 18 when called by a processor.

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