Temperature control method of air fryer

Abstract

The invention provides a temperature control method of an air fryer, a plurality of accurate temperature control points are pre-stored in the air fryer, and each accurate temperature control point corresponds to a temperature control threshold value; the temperature control method of the air fryer comprises the steps that after cooking is started, the set temperature selected by a user is obtained; judging whether the set temperature is an accurate temperature control point or not; if the judgment result indicates that the set temperature is the precise temperature control point, the heating pipe is controlled to work according to the temperature control threshold value of the precise temperature control point corresponding to the set temperature; if the judgment result indicates that the set temperature is an imprecise temperature control point which is not the precise temperature control point, a set temperature control threshold value corresponding to the set temperature is calculated according to a temperature control threshold value corresponding to the precise temperature control point; and controlling the heating pipe to work according to the set temperature control threshold value corresponding to the set temperature. According to the method and the device, the actual temperature of the cooking cavity of the air fryer can be accurately controlled only by setting a few temperature control threshold values. And the temperature control precision of the air fryer is improved while the debugging workload is not increased.

Description

Technical Field

[0001] The present application relates to the technical field of air fryers, and in particular to a temperature control method for air fryers. Background Art

[0002] With the improvement of living standards, air fryers are increasingly widely used in people's daily lives. The air fryer is equipped with a heating tube and a cooking cavity for holding food. In practice, the air fryer is equipped with a temperature control threshold corresponding to the set temperature. When the working state of the heating tube is controlled according to the temperature control threshold, the actual temperature of the cooking cavity of the air fryer can reach the set temperature.

[0003] Since the temperature control threshold corresponding to the set temperature of the air fryer generally needs to be calibrated by the manufacturer before leaving the factory, but the temperature control threshold calibration work is relatively complicated, if each temperature value is calibrated for the temperature control threshold, it requires a huge workload, the product development cycle is too long, and it cannot meet production needs. Therefore, the set temperature of the air fryer in the prior art can only be adjusted every 5°C, that is, the manufacturer only needs to calibrate the temperature control threshold once every 5°C. However, although the above scheme can reduce the workload of temperature control threshold calibration during product design, users can only adjust the temperature every 5°C, which cannot meet the user's demand for adjustment accuracy, and the user experience is not good. Therefore, it is urgent to provide a temperature control method for an air fryer that can achieve precise temperature control without increasing the difficulty of temperature control threshold calibration. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a temperature control method for an air fryer, which can improve the temperature control accuracy of the air fryer without increasing the debugging workload.

[0005] The present application provides a temperature control method for an air fryer, wherein the air fryer has a cooking cavity for holding food, a hot air component is arranged above the cooking cavity, the hot air component includes a heating tube and a fan, and a temperature controller is arranged near the hot air component; a plurality of precise temperature control points are pre-stored in the air fryer, and each precise temperature control point corresponds to a temperature control threshold;

[0006] The temperature control methods of air fryer include:

[0007] After cooking starts, obtain the set temperature selected by the user;

[0008] Determine whether the set temperature is the precise temperature control point;

[0009] If the judgment result indicates that the set temperature is the precise temperature control point, the heating tube is controlled to work according to the temperature control threshold of the precise temperature control point corresponding to the set temperature;

[0010] If the judgment result indicates that the set temperature is an imprecise temperature control point that is not a precise temperature control point, the set temperature control threshold corresponding to the set temperature is calculated according to the temperature control threshold corresponding to the precise temperature control point, and the heating tube is controlled to operate according to the set temperature control threshold corresponding to the set temperature.

[0011] In one embodiment, the cooking process of the air fryer has a temperature rise stage and a constant temperature stage. Each target temperature corresponds to a first temperature control threshold and a second temperature control threshold. The heating tube is controlled to work according to the first temperature control threshold in the temperature rise stage, and the heating tube is controlled to work according to the second temperature control threshold in the constant temperature stage. The set temperature control threshold corresponding to the set temperature calculated according to the temperature control threshold corresponding to the precise temperature control point includes:

[0012] Calculate the first temperature control threshold corresponding to the set temperature according to the first temperature control threshold corresponding to the precise temperature control point;

[0013] The second temperature control threshold corresponding to the set temperature is calculated according to the second temperature control threshold corresponding to the precise temperature control point.

[0014] In one embodiment, the set temperature control threshold corresponding to the set temperature is calculated according to the temperature control threshold corresponding to the precise temperature control point, including:

[0015] Find the characteristic temperature control point of the set temperature among multiple precise temperature control points;

[0016] According to the temperature control threshold corresponding to the characteristic temperature control point, the set temperature control threshold corresponding to the set temperature is calculated;

[0017] The characteristic temperature control point includes an upper adjacent temperature control point of the set temperature and / or a lower adjacent temperature control point of the set temperature.

[0018] In one embodiment, when the characteristic temperature control point includes an upper adjacent temperature control point of the set temperature and a lower adjacent temperature control point of the set temperature, the set temperature control threshold corresponding to the set temperature is calculated according to the temperature control threshold corresponding to the characteristic temperature control point, including:

[0019] The temperature control threshold is calculated by the following formula (1);

[0020]

[0021] Among them, D is the set temperature control threshold, C 2 is the temperature control threshold corresponding to the upper adjacent temperature control point, C 1 is the temperature control threshold corresponding to the lower adjacent temperature control point, f is the temperature difference between the upper adjacent temperature control point and the lower adjacent temperature control point, X is the set temperature, X 1 To the next temperature control point.

[0022] In one embodiment, when the characteristic temperature control point includes an upper adjacent temperature control point of the set temperature and a lower adjacent temperature control point of the set temperature, searching for the characteristic temperature control point of the set temperature among a plurality of precise temperature control points includes:

[0023] Find out the threshold interval where the set temperature is located, and use the endpoint values ​​of the threshold interval as the upper adjacent temperature control point and the lower adjacent temperature control point; wherein, multiple precise temperature control points form multiple threshold intervals.

[0024] In one embodiment, the temperature difference between two adjacent precise temperature control points among the multiple precise temperature control points is a fixed value, and the multiple precise temperature control points are all integer multiples of the temperature difference; when the characteristic temperature control point includes the upper adjacent temperature control point of the set temperature, searching for the characteristic temperature control point of the set temperature among the multiple precise temperature control points includes:

[0025] The set temperature and the temperature difference between two adjacent precise temperature control points are summed to obtain a first intermediate temperature;

[0026] The first intermediate temperature is divided by the temperature difference between two adjacent precise temperature control points and rounded to obtain a second intermediate temperature;

[0027] The second intermediate temperature is multiplied by the temperature difference between two adjacent precise temperature control points to obtain the upper adjacent temperature control point.

[0028] In one embodiment, the temperature difference between two adjacent precise temperature control points among the multiple precise temperature control points is a fixed value, and the multiple precise temperature control points are all integer multiples of the temperature difference; when the characteristic temperature control point includes the lower adjacent temperature control point of the set temperature, searching for the characteristic temperature control point of the set temperature among the multiple precise temperature control points includes:

[0029] The set temperature is divided by the temperature difference between two adjacent precise temperature control points and rounded to obtain a third intermediate temperature;

[0030] The third intermediate temperature is multiplied by the temperature difference between two adjacent precise temperature control points to obtain the next adjacent temperature control point.

[0031] In one embodiment, when the characteristic temperature control point includes an upper adjacent temperature control point of the set temperature and a lower adjacent temperature control point of the set temperature, the set temperature control threshold corresponding to the set temperature is calculated according to the temperature control threshold corresponding to the characteristic temperature control point, including:

[0032] According to the temperature control threshold corresponding to the upper adjacent temperature control point and the temperature control threshold corresponding to the lower adjacent temperature control point, the temperature control threshold corresponding to each target temperature control point between the upper adjacent temperature control point and the lower adjacent temperature control point is calculated; wherein the temperature control thresholds corresponding to the upper adjacent temperature control point, the lower adjacent temperature control point and the target temperature control point are distributed in an arithmetic progression;

[0033] Matching a set temperature control point equal to the set temperature from multiple target temperature control points;

[0034] The temperature control threshold corresponding to the set temperature control point is used as the set temperature control threshold.

[0035] In one embodiment, the air fryer has a professional mode and a normal mode. When the air fryer is operated in the normal mode, the set temperature only includes the precise temperature control point; when the air fryer is operated in the professional mode, the set temperature includes the precise temperature control point and the non-precise temperature control point.

[0036] In one embodiment, the temperature difference between two adjacent precise temperature control points decreases as the temperature increases.

[0037] In the present application scheme, a temperature control method for an air fryer is provided. The method pre-stores a plurality of precise temperature control points in the air fryer in advance, and each precise temperature control point is correspondingly provided with a temperature control threshold; when the air fryer needs to make the actual temperature of the cooking cavity reach the temperature corresponding to the precise temperature control point, the heating tube can be directly controlled to work according to the temperature control threshold corresponding to the precise temperature control point; when the air fryer needs to make the actual temperature of the cooking cavity reach the temperature corresponding to the imprecise temperature control point, the air fryer can calculate the temperature control threshold corresponding to the imprecise temperature control point according to the control threshold corresponding to the precise temperature control point, and after the calculation is successful, the heating tube is controlled to work according to the calculated temperature control threshold.

[0038] It can be seen from this that in this application, only a few temperature control thresholds need to be set to accurately control the actual temperature of the cooking chamber of the air fryer, thereby improving the temperature control accuracy of the air fryer without increasing the debugging workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings required for use in the embodiments of the present application are briefly introduced below.

[0040] Figure 1 A schematic diagram of the connections of various components in an air fryer provided in one embodiment of the present application;

[0041] Figure 2 A connection diagram of a control unit provided in one embodiment of the present application;

[0042] Figure 3 A schematic flow chart of a temperature control method for an air fryer provided in one embodiment of the present application;

[0043] Figure 4 A schematic diagram of a flow chart for calculating and setting a temperature control threshold value provided in an embodiment of the present application.

[0044] Reference numerals:

[0045] 1-air fryer; 10-temperature controller; 11-control unit; 110-bus; 111-processor; 112-memory; 12-temperature sensor; 20-hot air component; 21-heating tube; 22-fan. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0047] Similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0048] Please refer to Figure 1 , which is a schematic diagram of the connection of various components in the air fryer 1 provided in one embodiment of the present application. Figure 1 As shown, the present application provides an air fryer 1, on which a thermostat 10 and a hot air component 20 and other devices are provided, and the air fryer 1 also has a cooking cavity for holding food. Specifically, the air fryer 1 has a shell, and the cooking cavity, the thermostat 10 and the hot air component 20 are all provided on the shell, the hot air component 20 is located above the cooking cavity, and the thermostat 10 is provided near the hot air component 20.

[0049] like Figure 1 As shown, the hot air assembly 20 includes a heating tube 21 and a fan 22, and the temperature controller 10 includes a temperature sensor 12 and a control unit 11; the control unit 11 is connected to the temperature sensor 12, the heating tube 21 and the fan 22; the temperature sensor 12 is used to monitor the temperature of the cooking cavity and feed back the monitoring result to the control unit 11; the heating tube 21 and the fan 22 are used to cook the food in the cooking cavity under the control of the control unit 11. The control unit 11 is used to execute the temperature control method of the air fryer 1 provided in the following embodiment of the present application.

[0050] Please refer to Figure 2 , which is a connection diagram of the control unit 11 provided in an embodiment of the present application. Figure 2 As shown, in this embodiment, the control unit 11 includes: at least one processor 111 and a memory 112, Figure 2 A processor 111 is taken as an example. The processor 111 and the memory 112 are connected via a bus 110. The memory 112 stores instructions that can be executed by the processor 111, and the instructions are executed by the processor 111.

[0051] Please refer to Figure 3 , which is a flow chart of a temperature control method of an air fryer 1 provided in an embodiment of the present application. Figure 3 As shown, the method includes the following steps S210 to S250.

[0052] Step S210: After cooking starts, obtain the set temperature selected by the user.

[0053] Among them, the set temperature is the temperature required for the air fryer 1 to cook food. The set temperature can be input by the user into the air fryer, or the air fryer can be provided with different food functions. The machine has pre-stored set temperatures corresponding to different food functions. When the user selects the food function, the set temperature selection is completed.

[0054] In this step, when the user needs to use the air fryer 1 to cook food, a cooking instruction can be sent to the control unit 11. The cooking instruction carries the set temperature selected by the user. Specifically, a trigger button can be provided on the shell of the air fryer 1, and the user can send a cooking instruction to the control unit 11 by clicking the trigger button; wherein the trigger button can be a hardware button, or the trigger button can be a touch button provided on the touch screen. Alternatively, a mobile terminal such as a mobile phone used by the user can be connected to the network of the air fryer 1, and the user can send a cooking instruction to the control unit 11 through the mobile terminal.

[0055] After receiving the cooking instruction, the control unit 11 may parse the cooking instruction and parse out the set temperature selected by the user from the cooking instruction. After the analysis is successful, the control unit 11 may continue to execute the following step S220.

[0056] Step S220: Determine whether the set temperature is a precise temperature control point.

[0057] Among them, the air fryer 1 stores multiple temperature options, the temperature options with temperature control thresholds are precise temperature control points, and the temperature options without temperature control thresholds are not precise temperature control points. In this application, temperature options that are not precise temperature control points are referred to as non-precise temperature control points. For example, assuming that the air fryer 1 stores two temperature options of 180°C and 190°C, the air fryer 1 stores a temperature control threshold corresponding to 180°C, and the air fryer 1 stores a temperature control threshold corresponding to 190°C, then 180°C and 190°C are precise temperature control points, and 182°C is a non-precise temperature control point.

[0058] In this step, after obtaining the set temperature selected by the user, the control unit 11 can determine whether the set temperature selected by the user is a precise temperature control point. The specific judgment method is to determine whether the air fryer 1 stores a temperature control threshold corresponding to the set temperature; if the judgment result shows that the air fryer 1 stores a temperature control threshold corresponding to the set temperature, the set temperature is a precise temperature control point, and the control unit 11 can continue to execute the following step S230; if the judgment result shows that the air fryer 1 does not store a temperature control threshold corresponding to the set temperature, the set temperature is an imprecise temperature control point, and the control unit 11 can continue to execute the following step S240.

[0059] Step S230: If the judgment result indicates that the set temperature is the precise temperature control point, the heating tube 21 is controlled to operate according to the temperature control threshold of the precise temperature control point corresponding to the set temperature.

[0060] In this step, if the set temperature is a precise temperature control point, the control unit 11 can control the heating tube 21 to work according to the temperature control threshold of the precise temperature control point corresponding to the set temperature. When the heating tube 21 is controlled to work according to the temperature control threshold of the precise temperature control point corresponding to the set temperature, the temperature of the cooking chamber of the air fryer 1 can reach the set temperature. For example, assuming that two precise temperature control points of 180°C and 190°C are stored in the air fryer, when the set temperature is 180°C, the heating tube 21 can be controlled to work according to the temperature control threshold corresponding to 180°C.

[0061] Step S240: If the judgment result indicates that the set temperature is an inaccurate temperature control point that is not a precise temperature control point, a set temperature control threshold corresponding to the set temperature is calculated according to the temperature control threshold corresponding to the precise temperature control point.

[0062] The set temperature control threshold is a temperature control threshold corresponding to the set temperature.

[0063] In this step, if the set temperature is not a precise temperature control point, the control unit 11 can calculate the temperature control threshold corresponding to the set temperature based on the temperature control threshold corresponding to the precise temperature control point. After the calculation is successful, the control unit 11 can continue to execute the following step S250.

[0064] Step S250: Control the heating tube 21 to operate according to the set temperature control threshold corresponding to the set temperature.

[0065] In this step, after obtaining the temperature control threshold corresponding to the set temperature, the control unit 11 can control the heating tube 21 to work according to the temperature control threshold corresponding to the set temperature. When the heating tube 21 is controlled to work according to the temperature control threshold corresponding to the set temperature, the temperature of the cooking chamber of the air fryer 1 can reach the set temperature.

[0066] In the present application, after the user selects a set temperature, the air fryer 1 will determine whether the set temperature is a precise temperature control point; if the set temperature is a precise temperature control point, the heating tube 21 is controlled to work according to the temperature control threshold corresponding to the precise temperature control point, and the cooking cavity can reach the set temperature during the operation of the heating tube 21; if the set temperature is not a precise temperature control point, the set temperature control threshold corresponding to the set temperature is calculated according to the temperature control threshold of the precise temperature control point. After the calculation is successful, the heating tube 21 is controlled to work according to the set temperature control threshold, and the cooking cavity can reach the set temperature during the operation of the heating tube 21.

[0067] Assume that the air fryer 1 stores two temperature options of 180°C and 185°C, and the air fryer 1 stores a temperature control threshold corresponding to 180°C, and the air fryer 1 also stores a temperature control threshold corresponding to 185°C. At this time, 180°C and 185°C are both precise temperature control points. In this case, according to the temperature control method in the prior art, only the temperature of the cooking cavity can be controlled to reach 180°C and 185°C, but the temperature of the cooking cavity cannot be controlled to reach the temperature corresponding to non-precise temperature control points such as 181°C. However, it can be seen from the above description that in the present application, the temperature of the cooking cavity can be controlled to reach 180°C and 185°C, and the temperature of the cooking cavity can be controlled to reach the temperature corresponding to non-precise temperature control points such as 181°C.

[0068] In summary, when the same number of temperature control thresholds are set, in the prior art, only the temperature of the cooking cavity can be controlled to reach the temperature corresponding to the precise temperature control point, but the temperature of the cooking cavity cannot be controlled to reach the temperature corresponding to the non-precise temperature control point; however, in the present application, the temperature of the cooking cavity can be controlled to reach the temperature corresponding to the precise temperature control point, and the temperature of the cooking cavity can be controlled to reach the temperature corresponding to the non-precise temperature control point; compared with the prior art, the temperature control accuracy in the present application is higher.

[0069] Furthermore, when the temperature is controlled in the manner of the prior art, if the temperature control accuracy is to be improved, the setting interval of the precise temperature control points must be reduced. After the setting interval of the precise temperature control points is reduced, the number of precise temperature control points and the temperature control threshold will be increased. However, the temperature control threshold generally needs to be obtained through debugging. After increasing the number of temperature control thresholds, the debugging workload when setting the temperature control threshold is increased. However, it can be seen from the above description that in the present application, a higher temperature control accuracy can be guaranteed without increasing the control threshold; the temperature control accuracy of the air fryer is improved without increasing the debugging workload.

[0070] In one embodiment, the control unit 11 can Figure 4 Steps S311-S312 shown in the figure calculate the set temperature control threshold corresponding to the set temperature. The specific principle is explained in detail below:

[0071] Step S311: searching for a characteristic temperature control point of a set temperature among a plurality of precise temperature control points.

[0072] Among them, the characteristic temperature control point may include an upper adjacent temperature control point of the set temperature, and / or a lower adjacent temperature control point of the set temperature; among the precise temperature control points, there are multiple first standard temperature control points with a temperature value larger than the set temperature, and the temperature control point with the smallest temperature difference with the set temperature among the first standard temperature control points is the upper adjacent temperature control point; among the precise temperature control points, there are multiple second standard temperature control points with a temperature value smaller than the set temperature, and the temperature control point with the smallest temperature difference with the set temperature among the second standard temperature control points is the lower adjacent temperature control point.

[0073] The following is a detailed explanation of the specific principle of finding characteristic temperature control points among multiple precise temperature control points:

[0074] (1) When the characteristic temperature control point includes the upper adjacent temperature control point and the lower adjacent temperature control point:

[0075] ① Multiple precise temperature control points will form multiple threshold intervals. The control unit 11 can find the threshold interval where the set temperature is located, and use the endpoint values ​​of the threshold interval as the upper adjacent temperature control point and the lower adjacent temperature control point. For example, assuming that the air fryer 1 stores three precise temperature control points of 180°C, 185°C and 190°C, the above three precise temperature control points form two threshold intervals of [180, 185] and [185, 190]. At this time, if the set temperature is 182°C, 180°C can be used as the lower adjacent temperature control point, and 185°C can be used as the upper adjacent temperature control point.

[0076] It is worth noting that no matter whether the temperature difference between two adjacent precise temperature control points is a fixed value or not, and no matter whether the precise temperature control point is an integer value or not, the upper adjacent temperature control point and the lower adjacent temperature control point can be found by the method in this embodiment.

[0077] ② When the temperature difference between two adjacent precise temperature control points is a fixed value, and multiple precise temperature control points are integer multiples of the above temperature difference, the upper adjacent temperature control point and the lower adjacent temperature control point can also be found by the method in this embodiment:

[0078] The set temperature and the temperature difference between two adjacent precise temperature control points are summed to obtain the first intermediate temperature; then the first intermediate temperature is divided by the temperature difference between two adjacent precise temperature control points and rounded to obtain the second intermediate temperature; the second intermediate temperature is multiplied by the temperature difference between two adjacent precise temperature control points to obtain the upper adjacent temperature control point. Specifically, assuming that the temperature difference between two adjacent precise temperature control points is A, the set temperature is B, and the upper adjacent temperature control point is E, then the above solution process can be expressed as E = |(B+A) / A|*A. For example, when the set temperature B is equal to 62°C and the temperature difference A between two adjacent precise temperature control points is equal to 5°C, the upper adjacent temperature control point E = |(62+5) / 5|*5 = 65°C can be obtained.

[0079] After obtaining the upper adjacent temperature control point, the temperature difference between the upper adjacent temperature control point and the two adjacent precise temperature control points is calculated to obtain the lower adjacent temperature control point.

[0080] ③ When the temperature difference between two adjacent precise temperature control points is a fixed value, and multiple precise temperature control points are integer multiples of the above temperature difference, the upper adjacent temperature control point and the lower adjacent temperature control point can also be found by the method in this embodiment:

[0081] Divide the set temperature by the temperature difference between two adjacent precise temperature control points and round it to get the third intermediate temperature; then multiply the third intermediate temperature by the temperature difference between two adjacent precise temperature control points to get the next adjacent temperature control point. Specifically, assuming that the temperature difference between two adjacent precise temperature control points is A, the set temperature is B, and the next adjacent temperature control point is P, then the above solution process can be expressed as P = |B / A|*A. For example, when the set temperature B is equal to 62°C and the temperature difference A between two adjacent precise temperature control points is equal to 5°C, the next adjacent temperature control point P can be obtained as |62 / 5|*5 = 60°C.

[0082] After obtaining the lower adjacent temperature control point, the temperature difference between the lower adjacent temperature control point and the two adjacent precise temperature control points is summed to obtain the upper adjacent temperature control point.

[0083] (2) When the characteristic temperature control point only includes the upper adjacent temperature control point, the control unit 11 can search for the upper adjacent temperature control point through the embodiments shown in ① and ② above.

[0084] (3) When the characteristic temperature control point only includes the lower adjacent temperature control point, the control unit 11 can search for the lower adjacent temperature control point through the embodiments shown in ① and ③ above.

[0085] After the characteristic temperature control point search is completed, the control unit 11 can continue to execute the following step S312.

[0086] Step S312: Calculate the set temperature control threshold corresponding to the set temperature according to the temperature control threshold corresponding to the characteristic temperature control point.

[0087] In this step, when the characteristic temperature control point only includes the upper adjacent temperature control point, the control unit 11 can calculate the set temperature control threshold corresponding to the set temperature based on the temperature control threshold corresponding to the upper adjacent temperature control point; when the characteristic temperature control point only includes the lower adjacent temperature control point, the control unit 11 can calculate the set temperature control threshold corresponding to the set temperature based on the temperature control threshold corresponding to the lower adjacent temperature control point; when the characteristic temperature control point includes both the upper adjacent temperature control point and the lower adjacent temperature control point, the control unit 11 can calculate the set temperature control threshold corresponding to the set temperature based on the temperature control thresholds corresponding to the upper adjacent temperature control point and the lower adjacent temperature control point.

[0088] The following is a detailed explanation of the specific method of calculating and setting the temperature control threshold when the characteristic temperature control point includes both the upper adjacent temperature control point and the lower adjacent temperature control point:

[0089] (1) According to the temperature control threshold corresponding to the upper adjacent temperature control point and the temperature control threshold corresponding to the lower adjacent temperature control point, the temperature control threshold corresponding to each target temperature control point between the upper adjacent temperature control point and the lower adjacent temperature control point is calculated; wherein the temperature control thresholds corresponding to the upper adjacent temperature control point, the lower adjacent temperature control point and the target temperature control point are distributed in an arithmetic progression; a set temperature control point equal to the set temperature is matched from multiple target temperature control points; and the temperature control threshold corresponding to the set temperature control point is used as the set temperature control threshold. For example, assuming that the set temperature is 182°C, the upper adjacent temperature control point of the set temperature is 185°C, the lower adjacent temperature control point of the set temperature is 180°C, the temperature control threshold corresponding to the lower adjacent temperature control point 180°C is 190°C, and the temperature control threshold corresponding to the upper adjacent temperature control point 185°C is 200°C. Then, according to the calculation method of the arithmetic progression, the temperature control threshold corresponding to the first target temperature control point 181°C between the upper adjacent temperature control point and the lower adjacent temperature control point can be calculated to be 192°C, the temperature control threshold corresponding to the second target temperature control point 182°C between the upper adjacent temperature control point and the lower adjacent temperature control point can be calculated to be 194°C, the temperature control threshold corresponding to the third target temperature control point 183°C between the upper adjacent temperature control point and the lower adjacent temperature control point can be calculated to be 196°C, and the temperature control threshold corresponding to the fourth target temperature control point 184°C between the upper adjacent temperature control point and the lower adjacent temperature control point can be calculated to be 198°C. After the calculation is successful, a set temperature control point equal to the set temperature can be matched from the above multiple target temperature control points, and then the temperature control threshold 194°C corresponding to the set temperature control point is used as the set temperature control threshold.

[0090] It is worth noting that the above-mentioned target temperature control point may be an integer value or may not be an integer value, and the temperature control threshold value corresponding to each target temperature control point may be an integer value or may not be an integer value.

[0091] (2) Calculate and set the temperature control threshold using the following formula (1):

[0092]

[0093] Among them, D is the set temperature control threshold, C 2 is the temperature control threshold corresponding to the upper adjacent temperature control point, C 1 is the temperature control threshold corresponding to the lower adjacent temperature control point, f is the temperature difference between the upper adjacent temperature control point and the lower adjacent temperature control point, X is the set temperature, X 1 To the next temperature control point.

[0094] It is worth noting that in the present application, the set temperature may be an integer value or not, the temperature control threshold corresponding to each precise temperature control point may be an integer value or not, and the set temperature control threshold corresponding to the set temperature may be an integer value or not.

[0095] It can be seen from the above content that in this application, the temperature control threshold can be calculated and set in a variety of ways, which is highly flexible.

[0096] In the prior art, if the temperature of the cooking cavity is to reach a certain target temperature, the working state of the heating tube 21 needs to be controlled according to the temperature control threshold. In practice, the cooking process of the air fryer 1 is divided into a heating stage and a constant temperature stage. Each target temperature corresponds to a first temperature control threshold and a second temperature control threshold. In the heating stage, the first temperature control threshold is used to control the working state of the heating tube 21, and in the constant temperature stage, the second temperature control threshold is used to control the working state of the heating tube 21. Under this premise, when the above target temperature is the set temperature mentioned in the above steps, it can be determined whether the set temperature is a precise temperature control point by the above step S220; if the set temperature is a precise temperature control point, the working state of the heating tube 21 can be directly controlled according to the first temperature control threshold and the second temperature control threshold corresponding to the precise temperature control point; if the set temperature is not a precise temperature control point, it is necessary to calculate the first temperature control threshold corresponding to the set temperature according to the first temperature control threshold corresponding to the precise temperature control point, and it is necessary to calculate the second temperature control threshold corresponding to the set temperature according to the second temperature control threshold corresponding to the precise temperature control point; wherein, the specific calculation method is detailed in the above embodiment, and will not be repeated here. After the calculation is successful, the working state of the heating tube 21 can be controlled according to the first temperature control threshold and the second temperature control threshold.

[0097] The specific method of controlling the working state of the heating tube 21 by using the first temperature control threshold and the second temperature control threshold is explained in detail below:

[0098] When cooking starts, the control unit 11 first controls the air fryer 1 to enter the heating stage, during which the heating tube 21 is continuously controlled to work. During the operation of the heating tube 21, the temperature sensor 12 monitors the temperature of the cooking cavity; when it is monitored that the temperature of the cooking cavity is less than the first temperature control threshold, the heating tube 21 continues to be controlled to work; when it is monitored that the temperature of the cooking cavity is greater than or equal to the first temperature control threshold, the heating tube 21 is controlled to stop heating. After the heating tube 21 stops heating, the air fryer 1 enters the constant temperature stage. After entering the constant temperature stage, the temperature sensor 12 monitors the temperature of the cooking cavity in real time; when it is monitored that the temperature of the cooking cavity is greater than or equal to the second temperature control threshold, the heating tube 21 continues to be controlled not to work; when it is monitored that the temperature of the cooking cavity is less than the second temperature control threshold, the heating tube 21 is controlled to work; during the operation of the heating tube 21, the temperature sensor 12 continues to monitor the temperature of the cooking cavity in real time; when it is monitored that the temperature of the cooking cavity is greater than or equal to the second temperature control threshold, the heating tube 21 is controlled to stop working; this cycle repeats, and when the temperature of the cooking cavity is less than the second temperature control threshold, the heating tube 21 is controlled to work; when the temperature of the cooking cavity is greater than or equal to the second temperature control threshold, the heating tube 21 is controlled to stop working until the air fryer 1 completes cooking.

[0099] In another embodiment, if the temperature of the cooking cavity is to reach a certain target temperature, the working state of the heating tube 21 needs to be controlled according to the temperature control threshold. In practice, the cooking process of the air fryer 1 is divided into a temperature rise stage and a constant temperature stage. Each target temperature corresponds to a first temperature control threshold, a second temperature control threshold and a third temperature control threshold. The first temperature control threshold can be used to control the working state of the heating tube 21 in the temperature rise stage, and the second temperature control threshold and the third temperature control threshold can be used to control the working state of the heating tube 21 in the constant temperature stage. Under this premise, when the above-mentioned target temperature is the set temperature mentioned in the above-mentioned steps, it can be determined whether the set temperature is a precise temperature control point by means of the above-mentioned step S220; if the set temperature is a precise temperature control point, the working state of the heating tube 21 can be directly controlled according to the first temperature control threshold, the second temperature control threshold and the third temperature control threshold corresponding to the precise temperature control point; if the set temperature is not a precise temperature control point, the first temperature control threshold corresponding to the set temperature is calculated according to the first temperature control threshold corresponding to the precise temperature control point, the second temperature control threshold corresponding to the set temperature is calculated according to the second temperature control threshold corresponding to the precise temperature control point, and the third temperature control threshold corresponding to the set temperature is calculated according to the temperature control threshold corresponding to the precise temperature control point; wherein, the specific calculation method is detailed in the above-mentioned embodiment and will not be repeated here; after the calculation is successful, the working state of the heating tube 21 can be controlled according to the first temperature control threshold, the second temperature control threshold and the third temperature control threshold.

[0100] The specific method of controlling the working state of the heating tube 21 by using the first temperature control threshold, the second temperature control threshold and the third temperature control threshold is explained in detail below:

[0101] When cooking starts, the control unit 11 first controls the air fryer 1 to enter the temperature rise stage, and controls the heating tube 21 to work continuously during the temperature rise stage. During the operation of the heating tube 21, the temperature sensor 12 monitors the temperature of the cooking cavity; when the temperature of the cooking cavity is less than the first temperature control threshold, the heating tube 21 is controlled to work continuously; when the temperature of the cooking cavity is greater than or equal to the first temperature control threshold, the heating tube 21 is controlled to stop working. After the heating tube 21 stops working, the air fryer 1 enters the constant temperature stage. After entering the constant temperature stage, the temperature sensor 12 monitors the temperature of the cooking cavity in real time; when the temperature of the cooking cavity is less than or equal to the second temperature control threshold, the heating tube 21 is controlled to work; during the operation of the heating tube 21, the temperature sensor 12 monitors the temperature of the cooking cavity, and when the temperature of the cooking cavity is greater than or equal to the third temperature control threshold, the heating tube 21 is controlled to stop heating; this goes back and forth, when the temperature of the cooking cavity is less than or equal to the second temperature control threshold, the heating tube 21 is controlled to work; when the temperature of the cooking cavity is greater than or equal to the third temperature control threshold, the heating tube 21 is controlled to stop working until the air fryer 1 completes cooking.

[0102] In one embodiment, the air fryer 1 is provided with two cooking modes, namely, a professional mode and a normal mode; when the air fryer 1 is operated in the normal mode, the set temperature selected by the user must be a precise temperature control point, and at this time, the control unit 11 controls the working state of the heating tube 21 according to the temperature control threshold corresponding to the precise temperature control point to achieve temperature control; when the air fryer 1 is operated in the professional mode, the set temperature selected by the user may be a precise temperature control point or an imprecise temperature control point; when the set temperature is a precise temperature control point, the control unit 11 controls the working state of the heating tube 21 according to the temperature control threshold corresponding to the precise temperature control point to achieve temperature control; when the set temperature is an imprecise temperature control point, the control unit 11 first needs to calculate the set temperature control threshold corresponding to the set temperature in the above manner, and after the calculation is successful, the working state of the heating tube 21 can be controlled according to the set temperature control threshold to achieve temperature control. Different operating modes are set according to the usage habits of different users. A professional mode is designed for some users who have higher requirements for cooking ingredients. In professional mode, users can choose to set the temperature within the range of precise temperature control points and non-precise temperature control points, meeting the user's requirements for temperature accuracy; for some users who do not have high requirements for the cooking effect of ingredients, users can only choose to set the temperature between precise temperature control points. The selection range of the set temperature is small, which is convenient for users to adjust the temperature.

[0103] From the above content, it can be seen that in this application, multiple modes are provided for users to choose from, which improves the user experience.

[0104] In one embodiment, the temperature difference between two adjacent precise temperature control points decreases as the temperature increases. For example, assuming that the air fryer 1 stores multiple precise temperature control points such as 180°C, 185°C, 190°C, 193°C, 196°C, 198°C and 200°C, it can be seen that when the temperature is low, the temperature difference between two adjacent precise temperature control points is 5°C. As the temperature increases, the temperature difference between two adjacent precise temperature control points becomes 3°C. As the temperature further increases, the temperature difference between two adjacent precise temperature control points becomes 2°C.

[0105] Through the above measures, the number of precise temperature control points and temperature control thresholds is increased in the high temperature section to ensure that the set temperature control thresholds can be accurately calculated in the high temperature section, fully guaranteeing the accuracy and precision of temperature control.

[0106] In several embodiments provided in the present application, the disclosed devices and methods may also be implemented in other ways. The device embodiments described above are merely schematic, for example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to the multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram may represent a module, a program segment or a part of a code, and a module, a program segment or a part of a code contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the box may also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they may sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or the flowchart, and the combination of boxes in the block diagram and / or the flowchart, can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0107] In addition, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0108] If the function is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, and other media that can store program codes. The above-mentioned memory 112 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable red-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, disk or optical disk.

Claims

1. A temperature control method for an air fryer, characterized in that: The air fryer has a cooking cavity for holding food, a hot air component is arranged above the cooking cavity, the hot air component includes a heating tube and a fan, and a temperature controller is arranged near the hot air component; a plurality of precise temperature control points are pre-stored in the air fryer, and each precise temperature control point corresponds to a temperature control threshold; The temperature control method of the air fryer comprises: After cooking starts, obtain the set temperature selected by the user; Determine whether the set temperature is a precise temperature control point; If the judgment result indicates that the set temperature is the precise temperature control point, the heating tube is controlled to operate according to the temperature control threshold of the precise temperature control point corresponding to the set temperature; If the judgment result indicates that the set temperature is an imprecise temperature control point that is not the precise temperature control point, the set temperature control threshold corresponding to the set temperature is calculated according to the temperature control threshold corresponding to the precise temperature control point, and the heating tube is controlled to operate according to the set temperature control threshold corresponding to the set temperature.

2. The temperature control method of an air fryer according to claim 1, characterized in that: The cooking process of the air fryer includes a temperature rise stage and a constant temperature stage, each target temperature corresponds to a first temperature control threshold and a second temperature control threshold, the heating tube is controlled to work according to the first temperature control threshold in the temperature rise stage, and the heating tube is controlled to work according to the second temperature control threshold in the constant temperature stage; the setting temperature control threshold corresponding to the set temperature calculated according to the temperature control threshold corresponding to the precise temperature control point includes: Calculating a first temperature control threshold corresponding to the set temperature according to the first temperature control threshold corresponding to the precise temperature control point; The second temperature control threshold corresponding to the set temperature is calculated according to the second temperature control threshold corresponding to the precise temperature control point.

3. A temperature control method for an air fryer according to claim 1 or 2, characterized in that: The calculating the set temperature control threshold corresponding to the set temperature according to the temperature control threshold corresponding to the precise temperature control point includes: Searching for a characteristic temperature control point of the set temperature among a plurality of precise temperature control points; Calculate the set temperature control threshold corresponding to the set temperature according to the temperature control threshold corresponding to the characteristic temperature control point; Wherein, the characteristic temperature control point includes an upper adjacent temperature control point of the set temperature and / or a lower adjacent temperature control point of the set temperature.

4. The temperature control method of an air fryer according to claim 3, characterized in that: When the characteristic temperature control point includes an upper adjacent temperature control point of the set temperature and a lower adjacent temperature control point of the set temperature, the temperature control threshold corresponding to the set temperature is calculated according to the temperature control threshold corresponding to the characteristic temperature control point, including: The set temperature control threshold is calculated by the following formula (1); Among them, D is the set temperature control threshold, C2 is the temperature control threshold corresponding to the upper adjacent temperature control point, C1 is the temperature control threshold corresponding to the lower adjacent temperature control point, f is the temperature difference between the upper adjacent temperature control point and the lower adjacent temperature control point, X is the set temperature, and X1 is the lower adjacent temperature control point.

5. The temperature control method of an air fryer according to claim 3, characterized in that: When the characteristic temperature control point includes an upper adjacent temperature control point of the set temperature and a lower adjacent temperature control point of the set temperature, searching for the characteristic temperature control point of the set temperature among a plurality of precise temperature control points includes: Find out the threshold interval where the set temperature is located, and use the endpoint values ​​of the threshold interval as the upper adjacent temperature control point and the lower adjacent temperature control point; wherein multiple precise temperature control points form multiple threshold intervals.

6. The temperature control method of an air fryer according to claim 3, characterized in that: The temperature difference between two adjacent precise temperature control points among the multiple precise temperature control points is a fixed value, and the multiple precise temperature control points are all integer multiples of the temperature difference; when the characteristic temperature control point includes the upper adjacent temperature control point of the set temperature, searching for the characteristic temperature control point of the set temperature among the multiple precise temperature control points includes: Performing a sum operation on the set temperature and the temperature difference between two adjacent precise temperature control points to obtain a first intermediate temperature; The first intermediate temperature is divided by the temperature difference between two adjacent precise temperature control points and rounded to obtain a second intermediate temperature; The second intermediate temperature is multiplied by the temperature difference between two adjacent precise temperature control points to obtain the upper adjacent temperature control point.

7. The temperature control method of an air fryer according to claim 3, characterized in that: The temperature difference between two adjacent precise temperature control points among the multiple precise temperature control points is a fixed value, and the multiple precise temperature control points are all integer multiples of the temperature difference; when the characteristic temperature control point includes the lower adjacent temperature control point of the set temperature, searching for the characteristic temperature control point of the set temperature among the multiple precise temperature control points includes: The set temperature is divided by the temperature difference between two adjacent precise temperature control points and rounded to obtain a third intermediate temperature; The third intermediate temperature is multiplied by the temperature difference between two adjacent precise temperature control points to obtain the lower adjacent temperature control point.

8. The temperature control method of an air fryer according to claim 3, characterized in that: When the characteristic temperature control point includes an upper adjacent temperature control point of the set temperature and a lower adjacent temperature control point of the set temperature, the temperature control threshold corresponding to the set temperature is calculated according to the temperature control threshold corresponding to the characteristic temperature control point, including: According to the temperature control threshold corresponding to the upper adjacent temperature control point and the temperature control threshold corresponding to the lower adjacent temperature control point, the temperature control threshold corresponding to each target temperature control point between the upper adjacent temperature control point and the lower adjacent temperature control point is calculated; wherein the temperature control thresholds corresponding to the upper adjacent temperature control point, the lower adjacent temperature control point and the target temperature control point are distributed in an arithmetic progression; Matching a set temperature control point equal to the set temperature from a plurality of target temperature control points; The temperature control threshold corresponding to the set temperature control point is used as the set temperature control threshold.

9. The temperature control method of an air fryer according to claim 1, characterized in that: The air fryer has a professional mode and a normal mode. When the air fryer operates in the normal mode, the set temperature only includes the precise temperature control point; when the air fryer operates in the professional mode, the set temperature includes the precise temperature control point and the non-precise temperature control point.

10. The temperature control method of an air fryer according to claim 1, characterized in that: The temperature difference between two adjacent precise temperature control points decreases as the temperature increases.

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