Cooking appliance and operation method and apparatus therefor, and computer device and storage medium

Abstract

A cooking appliance and an operation method and apparatus therefor, and a computer device, a storage medium and a computer program product. The method comprises: step 102, acquiring a set temperature of a cooking appliance; step 104, determining an operation strategy of the cooking appliance on the basis of a temperature range of the set temperature; and step 106, controlling, on the basis of the operation strategy, at least one of a top heating tube (201), a bottom heating tube (301) and a steam generator (401) of the cooking appliance to operate.

Description

Cooking appliance, operating method, device, computer equipment and storage medium thereof

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 2023112444727, filed on September 22, 2023, entitled “Cooking appliance and its operating method, device, computer equipment and storage medium”, the entire text of which is hereby incorporated by reference. Technical Field

[0003] The present application relates to the technical field of household appliances, and in particular to a cooking appliance and its operating method, device, computer equipment, storage medium and computer program product. Background Art

[0004] With the development of society and the advancement of technology, people's lives are becoming more and more diversified. A variety of cooking appliances have emerged on the market, bringing great convenience to people's lives, such as steamers, ovens, and steam-toaster ovens with steaming and baking functions. When using the steaming function of a steam-toaster oven, a lot of water often accumulates at the bottom of the inner cavity.

[0005] Summary of the Invention

[0006] The present application provides a cooking appliance and an operating method, apparatus, computer equipment, storage medium, and computer program product thereof.

[0007] A method for operating a cooking appliance comprises: obtaining a set temperature of the cooking appliance; determining an operation strategy for the cooking appliance based on a temperature range within which the set temperature falls; and controlling the operation of at least one of a top heating tube, a bottom heating tube, and a steam generator of the cooking appliance based on the operation strategy.

[0008] In one embodiment, determining the operating strategy of the cooking appliance based on the temperature range in which the set temperature is located includes: in response to the set temperature being in a first temperature range, determining the operating strategy of the cooking appliance to be a first operating strategy; in response to the set temperature being in a second temperature range, determining the operating strategy of the cooking appliance to be a second operating strategy; the temperature upper limit value of the second temperature range is less than or equal to the temperature lower limit value of the first temperature range; in response to the set temperature being in a third temperature range, determining the operating strategy of the cooking appliance to be a third operating strategy; the temperature upper limit value of the third temperature range is less than or equal to the temperature lower limit value of the second temperature range.

[0009] In one embodiment, controlling the operation of at least one of the top heating tube, the bottom heating tube and the steam generator of the cooking appliance according to the operation strategy includes: in response to the operation strategy being the first operation strategy, obtaining the set operation time of the cooking appliance; and controlling the operation of the top heating tube, the bottom heating tube and the steam generator of the cooking appliance according to the set operation time.

[0010] In one embodiment, the first operating strategy includes a first heating mode and a second heating mode, and controlling the operation of the top heating tube, the bottom heating tube and the steam generator of the cooking appliance according to the set operating time includes: in response to the set operating time being less than or equal to a preset time threshold, controlling the top heating tube, the bottom heating tube and the steam generator of the cooking appliance to operate in the first heating mode; in response to the set operating time being greater than the preset time threshold, controlling the top heating tube, the bottom heating tube and the steam generator of the cooking appliance to operate in the first heating mode until the cumulative heating time reaches the preset time threshold, and controlling the bottom heating tube to operate in the second heating mode.

[0011] In one embodiment, the controlling of the top heating tube, the bottom heating tube and the steam generator of the cooking appliance to operate in a first heating mode includes: controlling the top heating tube and the bottom heating tube of the cooking appliance to operate at a first duty cycle, and obtaining the inner cavity temperature of the cooking appliance in real time; in response to the inner cavity temperature rising to a first preset temperature threshold, controlling the top heating tube to stop operating, and controlling all heating elements of the steam generator of the cooking appliance to operate continuously; in response to the inner cavity temperature continuing to rise to the difference between the set temperature and the inner cavity temperature being less than or equal to a second preset temperature threshold, controlling the bottom heating tube to operate at a second duty cycle; the second duty cycle is less than the first duty cycle; in response to the inner cavity temperature continuing to rise to reach the set temperature, controlling multiple heating elements of the steam generator to operate alternately.

[0012] In one embodiment, controlling the bottom heating tube to operate in the second heating mode includes: controlling the bottom heating tube to switch to operate in a third duty cycle; the third duty cycle is smaller than the second duty cycle.

[0013] In one embodiment, controlling the operation of at least one of the top heating tube, the bottom heating tube and the steam generator of the cooking appliance according to the operation strategy also includes: in response to the operation strategy being the second operation strategy, controlling the top heating tube and the bottom heating tube of the cooking appliance to operate at a first duty cycle, and obtaining the inner cavity temperature of the cooking appliance in real time; in response to the inner cavity temperature rising to a first preset temperature threshold, controlling the top heating tube to stop operating, and controlling all heating elements of the steam generator of the cooking appliance to operate continuously; in response to the inner cavity temperature continuing to rise to the difference between the set temperature and the inner cavity temperature being less than or equal to a second preset temperature threshold, controlling the bottom heating tube to operate at a second duty cycle; the second duty cycle is smaller than the first duty cycle; in response to the inner cavity temperature continuing to rise to the set temperature, controlling the multiple heating elements of the steam generator to operate alternately, and controlling the bottom heating tube to operate at a third duty cycle; the third duty cycle is smaller than the second duty cycle.

[0014] In one embodiment, the first duty cycle is a continuous operation duty cycle (i.e., a full-power operation duty cycle), the second duty cycle is (14-16): (46-44), and the third duty cycle is (7.5-8.5): (52.5-51.5).

[0015] In one embodiment, the first preset temperature threshold is 40°C-50°C, and the second preset temperature threshold is 9°C-11°C.

[0016] In one embodiment, controlling the top heating tube and the bottom heating tube of the cooking appliance to operate at a first duty cycle further includes: controlling the back fan of the cooking appliance to operate.

[0017] In one embodiment, controlling the operation of at least one of the top heating tube, the bottom heating tube and the steam generator of the cooking appliance according to the operation strategy also includes: in response to the operation strategy being a third operation strategy, controlling the operation of some of the multiple heating elements of the steam generator of the cooking appliance, and obtaining the inner cavity temperature of the cooking appliance in real time; in response to the inner cavity temperature rising to the set temperature and the difference between the inner cavity temperature is less than or equal to a third preset temperature threshold, controlling some of the multiple heating elements switched by the steam generator to operate at a predetermined duty cycle.

[0018] In one embodiment, the third preset temperature threshold is 14°C-16°C.

[0019] In one embodiment, the first temperature range is greater than or equal to 90°C and less than or equal to 100°C; the second temperature range is greater than or equal to 70°C and less than 90°C; and the third temperature range is greater than or equal to 40°C and less than 70°C.

[0020] A cooking appliance operating device comprises: a set temperature acquisition module for acquiring the set temperature of the cooking appliance; an operation strategy matching module for determining the operation strategy of the cooking appliance based on the temperature range of the set temperature; and a heating control module for controlling the operation of at least one of a top heating tube, a bottom heating tube, and a steam generator of the cooking appliance according to the operation strategy.

[0021] A cooking appliance comprises a housing, a top heating tube, a bottom heating tube, a steam generator, and a controller, wherein the top heating tube is arranged on a first inner surface of the housing, and the bottom heating tube is arranged on a second inner surface of the housing opposite to the first inner surface. The top heating tube, the bottom heating tube, and the steam generator are respectively connected to the controller, and the controller is used to execute the steps of the above-mentioned operating method.

[0022] A computer device includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above-mentioned operation method when executing the computer program.

[0023] A computer-readable storage medium stores a computer program, which implements the steps of the above-mentioned operation method when executed by a processor.

[0024] A computer program product includes a computer program, which implements the steps of the above-mentioned operation method when executed by a processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] FIG1 is a schematic flow chart of an operating method of a cooking appliance according to an embodiment of the present application;

[0027] FIG2 is a schematic structural diagram of a cooking utensil according to an embodiment of the present application;

[0028] FIG3 is a schematic structural diagram of a cooking utensil in another embodiment of the present application;

[0029] FIG4 is a schematic structural diagram of a cooking utensil in another embodiment of the present application;

[0030] FIG5 is a schematic diagram of a flow chart of an operating method in another embodiment of the present application;

[0031] FIG6 is a schematic diagram of a flow chart of an operating method in another embodiment of the present application;

[0032] FIG7 is a schematic diagram of a flow chart of an operating method according to another embodiment of the present application;

[0033] FIG8 is a schematic diagram of a first operation strategy flow in one embodiment of the present application;

[0034] FIG9 is a schematic diagram of a second operation strategy flow in one embodiment of the present application;

[0035] FIG10 is a schematic flow chart of an operating method in another embodiment of the present application;

[0036] FIG11 is a schematic structural diagram of an operating device of a cooking appliance in one embodiment of the present application. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0039] Cooking appliances like steamers and ovens often generate a large amount of steam during use, leading to a buildup of water at the bottom of the inner chamber. This creates a significant amount of inconvenience and requires significant time and effort to clean up after cooking. In the prior art, the control logic for these cooking appliances is relatively simple, resulting in poor overall performance.

[0040] An embodiment of the present application provides a method for operating a cooking appliance, which is applied to a cooking appliance, specifically, a cooking appliance of the type including a heating tube and a steam generator. For example, in a more detailed embodiment, the cooking appliance may be a steamer or a steam oven.

[0041] Taking a steamer or oven as an example, the cooking appliance includes a top heating tube, a bottom heating tube, a steam generator, and a controller. The top and bottom heating tubes can be of the same or different types, and can employ resistive heating tubes or radiant heating tubes, among other options. The top heating tube, bottom heating tube, and steam generator are each connected to a controller, which executes the cooking appliance operating method according to the embodiments of the present application.

[0042] Please refer to FIG. 1 , which shows a method for operating a cooking appliance, including steps 102 , 104 and 106 .

[0043] Step 102: Obtain the set temperature of the cooking appliance.

[0044] Specifically, the set temperature is the temperature set by the user that the cooking appliance is expected to heat the food to be heated, that is, the operating temperature pre-set before the cooking appliance starts working. A cooking appliance is a cooking device that heats the food to be heated placed inside its cooking cavity through steam.

[0045] It should be noted that there is no single method for obtaining the set temperature. In one embodiment, a human-computer interaction device can be provided on the outer surface of the cooking appliance. Specifically, this can be a touch screen display or a mechanical button interface, depending on the actual situation. In this case, the set temperature can be input through the human-computer interaction device while the user is using the cooking appliance.

[0046] In another embodiment, the controller of the cooking appliance can also be connected to a terminal device for communication. The terminal device can specifically be a mobile phone or a wearable device. When the user needs to use the cooking appliance, the user inputs the set temperature through the terminal device, and the terminal device communicates with the controller, so that the controller obtains the set temperature.

[0047] Step 104: Determine the operation strategy of the cooking appliance according to the temperature range of the set temperature.

[0048] Specifically, the temperature range is a temperature interval pre-stored in the controller for matching different operating strategies. In the embodiment of the present application, different operating strategies are pre-stored in the controller, and these operating strategies are stored in correspondence with temperature ranges. After obtaining the set temperature, the controller determines which temperature range the currently obtained set temperature falls within. After determining the temperature range in which the set temperature falls, the controller matches the pre-stored correspondence between the temperature range and the operating strategy to obtain the operating strategy corresponding to the set temperature.

[0049] Step 106 : Control at least one of the top heating tube, the bottom heating tube, and the steam generator of the cooking appliance to operate according to the operation strategy.

[0050] Specifically, referring to Figure 2, the top heating tube 201 is a heating tube arranged on the first inner surface of the cooking utensil, wherein the first inner surface is the inner surface away from the placement platform for placing food to be heated when the cooking utensil is normally placed, that is, the top surface of the cooking cavity of the cooking utensil.

[0051] Specifically, referring to Figure 3 , bottom heating tube 301 is located on the second inner surface of the cooking appliance. This second inner surface is positioned opposite the first inner surface. Specifically, when the cooking appliance is normally placed, it lies adjacent to the inner surface of the placement platform, i.e., the bottom surface of the cooking cavity. Because the cooking cavity of the cooking appliance is used to hold food to be heated, to prevent direct contact between the food and bottom heating tube 301, bottom heating tube 301 can be concealed within the housing, away from the cooking cavity.

[0052] Specifically, referring to Figure 4, the steam generator 401 is a device that can generate steam by heating to heat and cook food with the steam. The steam generator 401 can be installed on the side wall or bottom of the cooking appliance, etc., without limitation.

[0053] In more detail, in one embodiment, the steam generator includes a heating element (such as a heating tube) for heating to generate water vapor. The number of heating elements can be one, or can be set to two or more, so that the steam generating capacity of the steam generator can be changed by changing the number of heating elements put into operation.

[0054] The operating strategy includes the specific operating modes of the top heating tube, bottom heating tube, and steam generator during the cooking appliance's operation in accordance with user requirements. When the controller uses the acquired operating strategy to control heating, the specific operating modes of the top heating tube, bottom heating tube, and steam generator may vary depending on the operating strategy. In this embodiment, the controller simply controls the top heating tube, bottom heating tube, and steam generator to operate in the corresponding modes based on the acquired operating strategy to heat the food to be cooked.

[0055] The above-described cooking appliance operating method can obtain the cooking appliance's set temperature during operation, then match the cooking appliance with a corresponding operating strategy based on the set temperature's temperature range. Ultimately, the matched operating strategy controls the operation of at least one of the cooking appliance's top heating tube, bottom heating tube, and steam generator for heating. This solution allows the cooking appliance to utilize different heating strategies based on the desired cooking appliance set temperature, providing diverse control logic and effectively improving overall cooking appliance performance.

[0056] Referring to FIG. 5 , in one embodiment, step 104 includes step 502 , step 504 , and step 506 .

[0057] Step 502: In response to the set temperature being within the first temperature range, determining that the operation strategy of the cooking appliance is a first operation strategy.

[0058] Step 504 : In response to the set temperature being within the second temperature range, determining that the operation strategy of the cooking appliance is the second operation strategy.

[0059] Step 506 : In response to the set temperature being within the third temperature range, determining that the operation strategy of the cooking appliance is the third operation strategy.

[0060] Specifically, the upper temperature limit of the second temperature range is less than or equal to the lower temperature limit of the first temperature range, and the upper temperature limit of the third temperature range is less than or equal to the lower temperature limit of the second temperature range.

[0061] This embodiment is specifically explained by assuming that there are three temperature ranges, each corresponding to a different operating strategy. The temperature ranges, from highest to lowest, are the first temperature range, the second temperature range, and the third temperature range. Accordingly, the operating strategy corresponding to the first temperature range is the first operating strategy, the operating strategy corresponding to the second temperature range is the second operating strategy, and the operating strategy corresponding to the third temperature range is the third operating strategy. Therefore, during actual operation, the controller determines the temperature range within which the set temperature falls based on the current user-entered set temperature, and then controls the operation of the cooking appliance, specifically, controls the operation of at least one of the top heating tube, the bottom heating tube, and the steam generator, using the operating strategy corresponding to that temperature range.

[0062] It can be understood that in other embodiments, the temperature range can be set to a larger number, such as 4, 5, etc., according to actual needs. Accordingly, different operating strategies are configured for different temperature ranges, so that the cooking appliance can operate with different operating strategies in combination with the set temperature input by the user, effectively improving the diversification of the operating logic of the cooking appliance and improving the operating performance of the entire machine.

[0063] Referring to FIG. 6 , in one embodiment, step 106 includes step 602 and step 604 .

[0064] Step 602: In response to the operating strategy being the first operating strategy, obtaining the set operating time of the cooking appliance.

[0065] Step 604: Control the top heating tube, bottom heating tube, and steam generator of the cooking appliance to operate according to the set operating time.

[0066] Specifically, the set operating time is the cumulative time, set by the user, that the cooking appliance must operate to heat food. Under the first operating strategy, the set temperature required for heating the cooking appliance is relatively high. In this case, the set operating time must also be considered to control the operation of the cooking appliance to heat food. That is, in this embodiment, the first operating strategy is related to the set operating time, and the first operating strategy will differ depending on the set operating time. In this way, even when the set temperature is relatively high, the set operating time is also taken into account to control the top heating tube, bottom heating tube, and steam generator of the cooking appliance to operate in the heating mode corresponding to the set operating time, effectively improving the operational reliability of the cooking appliance.

[0067] Please refer to FIG. 7 . In one embodiment, the first operation strategy includes a first heating mode and a second heating mode. According to the set operation time, step 604 includes steps 702 and 704 .

[0068] Step 702 : In response to the set operating time being less than or equal to a preset time threshold, controlling the top heating tube, the bottom heating tube, and the steam generator of the cooking appliance to operate in a first heating mode.

[0069] Step 704, in response to the set operating time being greater than the preset time threshold, the top heating tube, the bottom heating tube and the steam generator of the cooking appliance are controlled to operate in the first heating mode until the cumulative heating time reaches the preset time threshold, and the bottom heating tube is controlled to operate in the second heating mode.

[0070] Specifically, the preset time threshold is a preset cumulative operating time duration during which, when the set temperature is within the first temperature range, the cooking appliance needs to be controlled using different first operating strategies. In this embodiment, when the set temperature is within the first temperature range, heating control is implemented using different control modes in combination with the set operating time.

[0071] Specifically, when the set running time is short, that is, the set running time is less than or equal to the preset time threshold, the controller controls the top heating tube, the bottom heating tube and the steam generator of the cooking appliance to operate in the first heating mode, and finally completes the cooking operation until the set running time is reached.

[0072] If the set operating time is longer, that is, the set operating time is greater than the preset time threshold, the same control as when the set operating time is less than or equal to the preset time threshold is performed from the start of heating until the preset time threshold is reached. That is, the top heating tube, bottom heating tube, and steam generator of the cooking appliance are first controlled to operate in the first heating mode. After the cooking appliance's operating time reaches the preset time threshold, the bottom heating tube is controlled to operate in the second heating mode, while the operating state of the top heating tube and steam generator remains unchanged until the cumulative heating time reaches the set operating time, completing cooking.

[0073] It should be noted that the preset time threshold is not unique. In a more detailed embodiment, the preset time threshold can be set to 40 minutes. That is, when the set temperature is determined to be within the first temperature range, if the set operating time is less than or equal to 40 minutes, or greater than 40 minutes, the first heating mode is used, or the first heating mode is used for 40 minutes, and then the second heating mode is used until the set operating time expires.

[0074] It can be understood that in one embodiment, after obtaining the set temperature of the cooking appliance and combining it with the set temperature matching belonging to the first operating strategy, the set operating time can be further obtained, and the relationship between the set operating time and the preset time threshold can be combined to control the operation of the cooking appliance with different control logic (that is, the first heating mode or the combination of the first heating mode and the second heating mode).

[0075] In another embodiment, the set temperature of the cooking appliance may be obtained. If the set temperature matches the first operating strategy, the cooking appliance may be controlled to operate in the first heating mode. After operating in the first heating mode, a determination is then made as to whether the set operating time is less than or equal to a preset time threshold. If the set operating time is less than or equal to the preset time threshold, the heating operation is terminated immediately after the set operating time is reached. If the set operating time is greater than the preset time threshold, the bottom heating tube is controlled to operate in the second heating mode after reaching the preset time threshold until the set operating time expires.

[0076] Please refer to FIG. 8 , in one embodiment, controlling the top heating tube, the bottom heating tube and the steam generator of the cooking appliance to operate in a first heating mode includes steps 801 , 802 , 803 and 804 .

[0077] Step 801: Control the top heating tube and the bottom heating tube of the cooking appliance to operate at a first duty cycle, and obtain the inner cavity temperature of the cooking appliance in real time.

[0078] Step 802 : In response to the inner cavity temperature rising to a first preset temperature threshold, the top heating tube is controlled to stop operating, and all heating elements of the steam generator of the cooking appliance are controlled to continue operating.

[0079] Step 803 : In response to the inner cavity temperature continuing to rise until the difference between the set temperature and the inner cavity temperature is less than or equal to the second preset temperature threshold, the bottom heating tube is controlled to operate at a second duty cycle.

[0080] Step 804 : In response to the inner cavity temperature continuing to rise and reaching the set temperature, controlling the multiple heating elements of the steam generator to operate alternately.

[0081] Specifically, the second duty cycle is less than the first duty cycle. Switching the bottom heating tube from operating at the first duty cycle to operating at the second duty cycle means that the operating time per unit time is reduced. The first preset temperature threshold is less than the set temperature, and the second preset temperature threshold can be further set to be less than the first preset temperature threshold. The duty cycle is the ratio of the time when the heating device (such as the heating tube) is running and stopped running within a unit time. For example, a duty cycle of 15:45 means that within 60 seconds, the heating device runs for 15 seconds and stops running for 45 seconds. The continuous operation of all heating elements of the steam generator is also called full-power operation, that is, the heating device is continuously in operation for heating within a unit time.

[0082] In the solution of this embodiment, after determining that the set temperature is within the first temperature range, the specific method of controlling the top heating tube, the bottom heating tube, and the steam generator of the cooking appliance to operate in the first heating mode is as follows:

[0083] First, the bottom and top heating tubes are simultaneously activated at a predetermined first duty cycle for preheating. After preheating begins, a temperature sensor located within the cooking cavity of the cooking appliance acquires the real-time cavity temperature and transmits it to a controller. The controller compares the real-time cavity temperature with a first predetermined temperature threshold to determine whether preheating is complete, specifically, whether the cavity temperature has risen to the first predetermined temperature threshold.

[0084] When the inner cavity temperature rises to a first preset temperature threshold, preheating is complete. At this point, the top heating tube will be controlled to stop operating, i.e., heating will be stopped. At the same time, all heating elements of the steam generator of the cooking appliance will be controlled to continue operating, i.e., the steam generator of the cooking appliance will be controlled to operate at full power. The steam generator may include multiple heating elements for heating so that the steam generator produces steam. For example, the heating element of the steam generator may be a heating tube, and the steam generator may include two heating tubes. It will be understood that in this state, the bottom heating tube will maintain the first duty cycle, and all heating elements in the steam generator will operate, thereby rapidly raising the inner cavity temperature at maximum power to reach the set temperature and ensuring cooking efficiency.

[0085] Correspondingly, in the process of the steam generator and the bottom heating tube rapidly heating the cooking cavity, the controller receives the inner cavity temperature collected and sent by the temperature collector in real time, and subtracts the set temperature from the inner cavity temperature to obtain a difference, and determines whether the difference is less than or equal to the second preset temperature threshold, that is, detects whether the inner cavity temperature rises to reach the temperature value of the set temperature minus the second preset temperature threshold.

[0086] If the difference between the set temperature and the inner cavity temperature is less than or equal to the second preset temperature threshold, the inner cavity temperature is about to reach the set temperature. To prevent the inner cavity temperature from rising too quickly and exceeding the set temperature, the heating power of the bottom heating tube can be reduced. This means that the bottom heating tube is controlled to operate at a second duty cycle that is smaller than the first duty cycle, slowing the rise in the inner cavity temperature and ultimately accurately raising the inner cavity temperature to the set temperature, improving heating accuracy.

[0087] Eventually, when the inner cavity temperature slows down its rate of increase and reaches the set temperature, to prevent the cooking appliance from generating excessive steam and to reduce water accumulation at the bottom of the cooking appliance, the controller adjusts the steam generator's operating mode so that the multiple heating elements operate alternately, meaning only one heating element operates at a time. Specifically, after the inner cavity temperature rises to the set temperature, the bottom heating tube maintains operation at a second duty cycle, and the steam generator enters a PID (Proportional Integral Derivative) duty cycle dynamic adjustment mode, switching from operating all heating elements (e.g., heating tubes) simultaneously to operating multiple heating elements alternately. For example, when the steam generator includes two heating tubes as heating elements, in the PID duty cycle dynamic adjustment mode, the two heating tubes operate alternately at a predetermined duty cycle. For example, the first heating tube operates for 15 seconds, followed by the second heating tube, and the two heating tubes operate alternately in this cycle, meaning only one heating tube operates at a time. The duty cycle dynamic adjustment mode means that the controller calculates the control quantity based on the real-time feedback of the inner cavity temperature, combined with the proportional, integral and differential algorithms, to dynamically adjust and change the predetermined duty cycle of the alternating operation of multiple heating elements of the steam generator, so that the inner cavity temperature can better follow the set temperature.

[0088] Through the above scheme, preheating can be carried out quickly and the inner cavity temperature can reach the set temperature. Through the coordinated operation of the bottom heating tube and the steam generator, steam condensation is effectively reduced, and the phenomenon of water accumulation at the bottom of the cooking utensil is generated, thereby improving the cooking performance of the cooking utensil and increasing the endurance time of the steaming work.

[0089] In one embodiment, controlling the bottom heating tube to operate in the second heating mode includes: controlling the bottom heating tube to switch to operate in a third duty cycle.

[0090] Specifically, the third duty cycle is lower than the second duty cycle. Switching the bottom heating tube from the second duty cycle to the third duty cycle means that the bottom heating tube operates at a reduced time per unit time. In the second heating mode, the controller only needs to adjust the duty cycle of the bottom heating tube, causing it to operate at a lower duty cycle. The top heating tube and steam generator remain in the same operating state, maintaining the top heating tube in the off state and maintaining the steam generator in a dynamic duty cycle adjustment mode, allowing the multiple heating elements to operate alternately.

[0091] In this way, when the set running time is greater than the preset time threshold, when the cumulative running time reaches the preset time threshold, the duty cycle of the bottom heating tube is further reduced, which can avoid excessive water accumulation at the bottom of the cooking appliance while ensuring that the inner cavity temperature will not be uncontrolled due to the participation of the bottom heating tube in the work, resulting in temperature overshoot, thereby improving the operating reliability of the cooking appliance.

[0092] Please refer to FIG. 9 , in one embodiment, step 106 further includes steps 902 , 904 , 906 and 908 .

[0093] Step 902 : In response to the operating strategy being the second operating strategy, the top heating tube and the bottom heating tube of the cooking appliance are controlled to operate at a first duty cycle, and the inner cavity temperature of the cooking appliance is obtained in real time.

[0094] Step 904 : In response to the inner cavity temperature rising to a first preset temperature threshold, the top heating tube is controlled to stop operating, and all heating elements of the steam generator of the cooking appliance are controlled to continue operating.

[0095] Step 906 : In response to the inner cavity temperature continuing to rise until the difference between the set temperature and the inner cavity temperature is less than or equal to the second preset temperature threshold, controlling the bottom heating tube to operate at a second duty cycle.

[0096] Step 908 : In response to the inner cavity temperature continuing to rise and reaching the set temperature, the plurality of heating elements of the steam generator are controlled to operate alternately, and the bottom heating tube is controlled to operate at a third duty cycle.

[0097] Specifically, the second duty cycle is less than the first duty cycle; the third duty cycle is less than the second duty cycle. Switching the bottom heating tube from the first duty cycle to the second duty cycle means a reduction in the operating time per unit time. Switching the bottom heating tube from the second duty cycle to the third duty cycle means a further reduction in the operating time per unit time. In this embodiment, when the set temperature is within the second temperature range, the second operating strategy is similar to the first heating mode in the first operating strategy. Both include activating the bottom and top heating tubes for preheating, activating the bottom heating tubes and steam generator for rapid temperature increase, reducing the vacuum ratio of the bottom heating tubes to slow the temperature increase rate, and controlling the steam generator to switch to a duty cycle dynamic adjustment mode to alternately operate multiple heating elements. The difference is that while controlling the steam generator to switch to a duty cycle dynamic adjustment mode to alternately operate multiple heating elements, the duty cycle of the bottom heating tubes is also adjusted, that is, the bottom heating tubes are controlled to operate at a third duty cycle that is less than the second duty cycle.

[0098] Similarly, through the solution of this embodiment, when the set temperature is within the second temperature range, preheating can be performed quickly and the inner cavity temperature can be brought to the set temperature. Through the coordinated operation of the bottom heating tube and the steam generator, steam condensation is effectively reduced, and water accumulation occurs at the bottom of the cooking utensil, thereby improving the cooking performance of the cooking utensil and increasing the endurance time of the steaming operation.

[0099] It should be noted that the sizes of the first duty cycle, the second duty cycle, the third duty cycle and the preset temperature thresholds are not unique. In one embodiment, the first duty cycle is a continuous operation duty cycle, that is, a full-power duty cycle, which is always in operation. The second duty cycle is (14-16): (46-44), and the third duty cycle is (7.5-8.5): (52.5-51.5); in one embodiment, the first preset temperature threshold is 40℃-50℃, and the second preset temperature threshold is 9℃-11℃.

[0100] Specifically, the continuous operation duty cycle means that it is in the running state within the unit time. The second duty cycle is (14-16): (46-44), that is, within a unit time of 60 (in seconds), the heating time is adjusted between 14 seconds and 16 seconds, and accordingly, the stop heating time will be adjusted between 46 seconds and 44 seconds. For example, the second duty cycle can be set to 14:46, 15:45, 16:44, etc. The third duty cycle is similar to the second duty cycle and will not be described in detail here. For example, in a more detailed embodiment, the third duty cycle can be set to 8:52, 7.5:52.5 or 8.5:51.5. The first preset temperature threshold can be any value between 40°C and 50°C, such as 40°C, 41°C, 42°C, 48°C, 49°C or 50°C. The second preset temperature threshold can be any value between 9°C and 11°C, such as 9°C, 10°C or 11°C, etc., without specific limitation.

[0101] In one embodiment, when controlling the top heating tube and the bottom heating tube of the cooking appliance to operate at a first duty cycle, the method further includes: controlling the back fan of the cooking appliance to operate.

[0102] Specifically, in this embodiment, after the controller controls the top and bottom heating tubes of the cooking appliance to operate at a first duty cycle, it further controls the back fan of the cooking appliance to operate, thereby ensuring more uniform heat dissipation and transfer. It is understood that the back fan can be maintained in operation during subsequent cooking to ensure uniform heat distribution within the cooking cavity of the cooking appliance.

[0103] Please refer to FIG. 10 , in one embodiment, step 106 further includes step 1002 and step 1004 .

[0104] Step 1002 : In response to the operating strategy being the third operating strategy, controlling some of the plurality of heating elements of the steam generator of the cooking appliance to operate continuously, and obtaining the inner cavity temperature of the cooking appliance in real time.

[0105] Step 1004 : In response to the inner cavity temperature rising to a value where the difference between the set temperature and the inner cavity temperature is less than or equal to a third preset temperature threshold, controlling some of the plurality of heating elements of the steam generator to operate at a predetermined duty cycle.

[0106] Specifically, when the set temperature is low, that is, within the third temperature range, the processing logic is not limited by the cooking time selection, and there is no need for preheating. At this time, the top and bottom heating tubes do not need to participate in the operation. First, some of the multiple heating elements of the steam generator are controlled to operate, while the remaining heating elements are not operated. For example, when the steam generator includes two heating tubes as heating elements, only one of the heating tubes of the steam generator is first controlled to operate, that is, only one of the heating tubes of the steam generator is controlled to operate at full power or other set duty cycle until the heating causes the inner cavity temperature to rise so that the difference between the set temperature and the inner cavity temperature is less than or equal to the third preset temperature threshold. After this, the steam generator is directly controlled to enter the PID duty cycle dynamic adjustment mode, and the operating duty cycle of a single heating tube (the one that was previously in operation) is dynamically adjusted. The controller calculates the control variable based on the real-time feedback of the inner cavity temperature, combined with the proportional, integral, and differential algorithms, and dynamically adjusts the predetermined duty cycle of the operation of the single heating tube in the steam generator so that the inner cavity temperature better follows the set temperature until the final operation time reaches the set operation time, and cooking ends.

[0107] In this way, when the set temperature is within the third temperature range, the steam generator can be controlled to operate in different states at different stages, reducing steam condensation and the accumulation of water at the bottom of the cooking appliance, thereby improving the cooking performance of the cooking appliance and increasing the endurance of the steaming operation.

[0108] It should be noted that the third preset temperature threshold is not unique. In one embodiment, the third preset temperature threshold can be set to be greater than the second preset temperature threshold and less than the first preset temperature threshold. Furthermore, in one embodiment, the third preset temperature threshold is 14°C-16°C. That is, the third preset temperature threshold is set to any value between 14°C-16°C, such as 14°C, 15°C, or 16°C.

[0109] It can be understood that the sizes of the first temperature range, the second temperature range and the third temperature range are not unique. In one embodiment, the first temperature range is greater than or equal to 90°C and less than or equal to 100°C; the second temperature range is greater than or equal to 70°C and less than 90°C; and the third temperature range is greater than or equal to 40°C and less than 70°C.

[0110] Specifically, in this embodiment, if the controller detects that the set temperature is greater than or equal to 90°C and less than or equal to 100°C, it will further determine the relationship between the set operating time and the preset time threshold, thereby determining whether to operate in the first heating mode or the first heating mode + the second heating mode. If the controller detects that the set temperature is greater than or equal to 70°C and less than 90°C, it will not consider the set operating time and will control the cooking appliance to operate according to the second operating strategy. If the controller detects that the set temperature is greater than or equal to 40°C and less than 70°C, it will also not consider the set operating time and will not turn on the top and bottom heating tubes. Instead, the controller will control the cooking appliance to operate according to the third operating strategy through the steam generator.

[0111] In order to facilitate understanding of the technical solution of the present application, the present application is explained below in conjunction with more detailed embodiments.

[0112] First, when the set temperature T≤100℃ is met, it is necessary to further determine the set operating time. When the set operating time t≤40min, the controller controls the top and bottom heating tubes to start working at the same time (starting at full power duty cycle), and at the same time controls the back fan to participate in the work to make heat dissipation and transfer more uniform. When the inner cavity temperature rises to 40℃ (the first preset temperature threshold), the top heating tube is controlled to stop working, and the boiler (steam generator) works at full power (that is, the two heating tubes at the bottom of the boiler start heating at the same time). At this time, the bottom heating tube continues to participate in the work (maintaining the full power duty cycle).

[0113] When the inner cavity temperature continues to rise to the set temperature of -10℃ (the second preset temperature threshold), the boiler continues to work at full power. At this time, the bottom heating tube changes from continuous operation to 15:45 duty cycle (the second duty cycle) (the cycle is 60s, of which 15s is on and 45s is off).

[0114] When the inner cavity temperature continues to rise to the set temperature, the boiler enters PID duty cycle operation. At this time, the boiler switches from dual heating tubes working simultaneously to single heating tube alternating heating (the specific opening and closing time of the boiler heating tube is determined by the PID algorithm). The bottom heating tube continues to work at a duty cycle of 15:45 until the set running time is reached and the work ends.

[0115] When 90℃≤set temperature T≤100℃, when the set running time t>40min, the working logic of the first 40min is consistent with the above-mentioned "set running time t≤40min". The main difference is that after 40min of work, that is, after the working time is greater than 40min, the boiler continues to work with the PID duty cycle (multiple heating elements operate alternately), and the bottom heating tube changes from 15:45 to 8:52 duty cycle (the third duty cycle) until the set running time is reached and the work is terminated.

[0116] Secondly, when the temperature range of 70°C ≤ set temperature T < 90°C is satisfied, the logic processing will not be restricted by the cooking time selection. The control logic is as follows: the top and bottom heating tubes start working simultaneously (at full power duty cycle), and the back fan is controlled to operate. When the internal cavity temperature rises to 40°C (the first preset temperature threshold), the top heating tube is controlled to stop working and the boiler starts working at full power (that is, the two bottom heating tubes of the boiler start heating simultaneously). At this time, the bottom heating tube continues to work (maintaining full power duty cycle).

[0117] When the inner cavity temperature continues to rise to the set temperature -10°C (the second preset temperature threshold), the boiler continues to operate at full power, and the bottom heating tube switches from continuous operation to a 15:45 duty cycle (the second duty cycle). When the inner cavity temperature continues to rise to the set temperature, the boiler enters PID duty cycle operation, switching from simultaneous operation of two heating tubes to alternating heating of a single heating tube. At the same time, the bottom heating tube switches from a 15:45 duty cycle to an 8:52 duty cycle (the third duty cycle) until the set operating time is reached, at which point operation ends.

[0118] Additionally, when the temperature satisfies 40°C ≤ set temperature T < 70°C, the logic processing is also not limited to the cooking time selection. At this time, the top and bottom heating tubes are disabled, and only one of the boiler's heating elements is initially controlled to operate (this can be at full power duty cycle or other duty cycle). When the internal cavity temperature rises to T-15°C (the third preset temperature threshold), the boiler enters PID duty cycle operation, again maintaining only one heating element in operation until the set operating time t is reached, at which point the operation ends.

[0119] Through the control logic of the above embodiment, the water accumulation at the bottom of the cooking appliance can be greatly reduced, so that the water accumulation at the bottom of the cooking appliance during cooking is less than 30g, which is far lower than the industry average (about 200g), thereby improving the cooking performance of the cooking appliance and increasing the endurance time of the steaming operation.

[0120] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0121] Based on the same concept, embodiments of the present application also provide a cooking appliance operating device for implementing the aforementioned cooking appliance operating method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more of the operating device embodiments provided below can be found in the above-described limitations of the operating method and will not be further elaborated here.

[0122] Please refer to FIG. 11 , which shows an operating device for a cooking appliance, including a set temperature acquisition module 112 , an operating strategy matching module 114 , and a heating control module 116 .

[0123] The set temperature acquisition module 112 is used to obtain the set temperature of the cooking appliance; the operation strategy matching module 114 is used to determine the operation strategy of the cooking appliance based on the temperature range of the set temperature; the heating control module 116 is used to control the operation of at least one of the top heating tube, bottom heating tube and steam generator of the cooking appliance according to the operation strategy.

[0124] In one embodiment, the operation strategy matching module 114 is further used to determine that the operation strategy of the cooking appliance is the first operation strategy in response to the set temperature being within the first temperature range; to determine that the operation strategy of the cooking appliance is the second operation strategy in response to the set temperature being within the second temperature range; and to determine that the operation strategy of the cooking appliance is the third operation strategy in response to the set temperature being within the third temperature range.

[0125] In one embodiment, the heating control module 116 is further configured to obtain a set operating time of the cooking appliance in response to the operating strategy being the first operating strategy; and control the operation of the top heating tube, the bottom heating tube, and the steam generator of the cooking appliance according to the set operating time.

[0126] In one embodiment, the heating control module 116 is further configured to control the top heating tube, the bottom heating tube and the steam generator of the cooking appliance to operate in a first heating mode in response to the set operating time being less than or equal to a preset time threshold; and to control the top heating tube, the bottom heating tube and the steam generator of the cooking appliance to operate in the first heating mode in response to the set operating time being greater than the preset time threshold, until the cumulative heating time reaches the preset time threshold, and then control the bottom heating tube to operate in a second heating mode.

[0127] In one embodiment, the heating control module 116 is also used to control the top heating tube and the bottom heating tube of the cooking appliance to operate at a first duty cycle, and obtain the inner cavity temperature of the cooking appliance in real time; in response to the inner cavity temperature rising to a first preset temperature threshold, the top heating tube is controlled to stop operating, and all heating elements of the steam generator of the cooking appliance are controlled to continue operating; in response to the inner cavity temperature continuing to rise to the difference between the set temperature and the inner cavity temperature being less than or equal to a second preset temperature threshold, the bottom heating tube is controlled to operate at a second duty cycle; in response to the inner cavity temperature continuing to rise to the set temperature, the multiple heating elements of the steam generator are controlled to operate alternately.

[0128] In one embodiment, the heating control module 116 is further configured to control the bottom heating tube to switch to operate at a third duty cycle.

[0129] In one embodiment, the heating control module 116 is further used to control the top heating tube and the bottom heating tube of the cooking appliance to operate at a first duty cycle in response to the operation strategy being the second operation strategy, and obtain the inner cavity temperature of the cooking appliance in real time; in response to the inner cavity temperature rising to a first preset temperature threshold, control the top heating tube to stop operating, and control all heating elements of the steam generator of the cooking appliance to continue operating; in response to the inner cavity temperature continuing to rise to the difference between the set temperature and the inner cavity temperature being less than or equal to the second preset temperature threshold, control the bottom heating tube to operate at a second duty cycle; in response to the inner cavity temperature continuing to rise to the set temperature, control the multiple heating elements of the steam generator to operate alternately, and control the bottom heating tube to operate at a third duty cycle.

[0130] In one embodiment, the heating control module 116 is further configured to control the operation of a back fan of the cooking appliance.

[0131] In one embodiment, the heating control module 116 is further used to control some of the multiple heating elements of the steam generator of the cooking appliance to operate continuously in response to the operating strategy being the third operating strategy, and to obtain the inner cavity temperature of the cooking appliance in real time; in response to the inner cavity temperature rising to the set temperature and the difference between the inner cavity temperature is less than or equal to the third preset temperature threshold, control some of the multiple heating elements of the steam generator to operate at a predetermined duty cycle.

[0132] Each module in the above-mentioned operating device can be implemented in whole or in part through software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory of the computer device in software form, so that the processor can call and execute the corresponding operations of each of the above modules.

[0133] The operating device of the aforementioned cooking appliance can obtain the set temperature of the cooking appliance during operation. It then matches the cooking appliance with a corresponding operating strategy based on the temperature range of the set temperature. Ultimately, the matched operating strategy controls the operation of at least one of the cooking appliance's top heating tube, bottom heating tube, and steam generator. This solution allows the cooking appliance to be controlled to adopt different heating strategies based on the desired set temperature, resulting in diverse control logic for the cooking appliance and effectively improving its overall performance.

[0134] Please refer to Figures 2 to 4. The present application provides a cooking appliance, including a box body, a top heating tube 201, a bottom heating tube 301, a steam generator 401 and a controller (not shown). The top heating tube 201 is arranged on the first inner surface of the box body, and the bottom heating tube 301 is arranged on the second inner surface of the box body opposite to the first inner surface. The top heating tube 201, the bottom heating tube 301 and the steam generator 401 are respectively connected to the controller, and the controller is used to execute the steps of the above-mentioned operating method.

[0135] Specifically, the type of cooking appliance is not limited to one type, and can include a heating tube and a steam generator 401. For example, in a more detailed embodiment, the cooking appliance can be a steamer or a steam oven. The operation method of the cooking appliance is as described in the above embodiments and the accompanying drawings, and will not be repeated here.

[0136] During operation, the cooking appliance can obtain its set temperature and then, based on the temperature range within which the set temperature falls, match a corresponding operating strategy to the cooking appliance. Ultimately, the matched operating strategy controls the operation of at least one of the top heating tube 201, bottom heating tube 301, and steam generator 401 of the cooking appliance. This solution allows the cooking appliance to be controlled to utilize different operating strategies for heating, tailored to the desired set temperature. This allows for diverse control logic and effectively improves the overall performance of the cooking appliance.

[0137] The present application also provides a computer device including a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the following steps are performed:

[0138] Obtaining a set temperature of the cooking appliance; determining an operation strategy of the cooking appliance according to a temperature range of the set temperature; and controlling the operation of at least one of a top heating tube, a bottom heating tube, and a steam generator of the cooking appliance according to the operation strategy.

[0139] When the processor executes the computer program, the processor also implements other steps of the above-mentioned cooking appliance operation method.

[0140] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0141] Obtaining a set temperature of the cooking appliance; determining an operation strategy of the cooking appliance according to a temperature range of the set temperature; and controlling the operation of at least one of a top heating tube, a bottom heating tube, and a steam generator of the cooking appliance according to the operation strategy.

[0142] When the computer program is executed by the processor, the other steps of the above-mentioned method for operating the cooking appliance are also implemented.

[0143] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0144] Obtaining a set temperature of the cooking appliance; determining an operation strategy of the cooking appliance according to a temperature range of the set temperature; and controlling the operation of at least one of a top heating tube, a bottom heating tube, and a steam generator of the cooking appliance according to the operation strategy.

[0145] When the computer program is executed by the processor, the other steps of the above-mentioned method for operating the cooking appliance are also implemented.

[0146] The aforementioned computer device, storage medium, and computer program product are capable of obtaining the set temperature of a cooking appliance during operation. Based on the temperature range within which the set temperature falls, the computer device matches a corresponding operating strategy to the cooking appliance, ultimately controlling the operation of at least one of the cooking appliance's top heating tube, bottom heating tube, and steam generator using the matched operating strategy. This solution allows the cooking appliance to be controlled to utilize different heating strategies based on the desired set temperature, resulting in diverse control logic for the cooking appliance and effectively improving its overall performance.

[0147] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0148] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A method for operating a cooking appliance, comprising: Get the set temperature of the cooking appliance; Determining an operation strategy of the cooking appliance according to the temperature range of the set temperature; According to the operation strategy, at least one of the top heating tube, the bottom heating tube and the steam generator of the cooking appliance is controlled to operate.

2. The operating method according to claim 1, wherein: Determining the operation strategy of the cooking appliance according to the temperature range of the set temperature includes: In response to the set temperature being within a first temperature range, determining the operation strategy of the cooking appliance to be a first operation strategy; In response to the set temperature being in a second temperature range, determining the operation strategy of the cooking appliance to be a second operation strategy; the upper temperature limit value of the second temperature range is less than or equal to the lower temperature limit value of the first temperature range; In response to the set temperature being in a third temperature range, the operation strategy of the cooking appliance is determined to be a third operation strategy; an upper temperature limit value of the third temperature range is less than or equal to a lower temperature limit value of the second temperature range.

3. The operating method according to claim 2, wherein: According to the operation strategy, controlling at least one of the top heating tube, the bottom heating tube and the steam generator of the cooking appliance to operate comprises: In response to the operation strategy being the first operation strategy, obtaining a set operation time of the cooking appliance; According to the set operation time, the top heating tube, the bottom heating tube and the steam generator of the cooking appliance are controlled to operate.

4. The operating method according to claim 3, wherein: The first operation strategy includes a first heating mode and a second heating mode, and the operation of the top heating tube, the bottom heating tube and the steam generator of the cooking appliance is controlled according to the set operation time, including: In response to the set operation time being less than or equal to a preset time threshold, controlling the top heating tube, the bottom heating tube and the steam generator of the cooking appliance to operate in a first heating mode; In response to the set operating time being greater than the preset time threshold, the top heating tube, the bottom heating tube and the steam generator of the cooking appliance are controlled to operate in a first heating mode until the accumulated heating time reaches the preset time threshold, and the bottom heating tube is controlled to operate in a second heating mode.

5. The operating method according to claim 4, wherein: The method of controlling the top heating tube, the bottom heating tube and the steam generator of the cooking appliance to operate in a first heating mode comprises: Control the top heating tube and the bottom heating tube of the cooking appliance to operate at a first duty cycle, and obtain the cooking The temperature of the inner cavity of the cooking appliance; In response to the inner cavity temperature rising to a first preset temperature threshold, controlling the top heating tube to stop operating, and controlling all heating elements of the steam generator of the cooking appliance to continue operating; In response to the inner cavity temperature continuing to rise until the difference between the set temperature and the inner cavity temperature is less than or equal to a second preset temperature threshold, controlling the bottom heating tube to operate at a second duty cycle; the second duty cycle is less than the first duty cycle; In response to the inner cavity temperature continuing to rise and reaching the set temperature, the plurality of heating elements of the steam generator are controlled to operate alternately.

6. The operating method according to claim 4, wherein: The controlling the bottom heating tube to operate in the second heating mode comprises: The bottom heating tube is controlled to switch to operate at a third duty cycle; the third duty cycle is smaller than the second duty cycle.

7. The operating method according to claim 2, wherein: According to the operation strategy, controlling at least one of the top heating tube, the bottom heating tube and the steam generator of the cooking appliance to operate further includes: In response to the operation strategy being the second operation strategy, controlling the top heating tube and the bottom heating tube of the cooking appliance to operate at a first duty cycle, and acquiring the inner cavity temperature of the cooking appliance in real time; In response to the inner cavity temperature rising to a first preset temperature threshold, controlling the top heating tube to stop operating, and controlling all heating elements of the steam generator of the cooking appliance to continue operating; In response to the inner cavity temperature continuing to rise until the difference between the set temperature and the inner cavity temperature is less than or equal to a second preset temperature threshold, controlling the bottom heating tube to operate at a second duty cycle; the second duty cycle is less than the first duty cycle; In response to the inner cavity temperature continuing to rise and reaching the set temperature, the multiple heating elements of the steam generator are controlled to operate alternately, and the bottom heating tube is controlled to operate at a third duty cycle; the third duty cycle is smaller than the second duty cycle.

8. The operating method according to claim 6 or 7, wherein: The first duty cycle is a continuous operation duty cycle, the second duty cycle is (14-16): (46-44), and the third duty cycle is (7.5-8.5): (52.5-51.5).

9. The operating method according to claim 6 or 7, wherein: The first preset temperature threshold is 40°C-50°C, and the second preset temperature threshold is 9°C-11°C.

10. The operating method according to any one of claims 5 to 7, wherein: The controlling the top heating tube and the bottom heating tube of the cooking appliance to operate at a first duty cycle further includes: Controlling the operation of the back fan of the cooking appliance.

11. The operating method according to claim 2, wherein: According to the operation strategy, controlling at least one of the top heating tube, the bottom heating tube and the steam generator of the cooking appliance to operate further includes: In response to the operation strategy being the third operation strategy, controlling some of the plurality of heating elements of the steam generator of the cooking appliance to operate continuously, and acquiring the inner cavity temperature of the cooking appliance in real time; In response to the inner cavity temperature rising to a point where the difference between the set temperature and the inner cavity temperature is less than or equal to a third preset temperature threshold, some of the plurality of heating elements of the steam generator are controlled to operate at a predetermined duty cycle.

12. The operating method according to claim 11, wherein: The third preset temperature threshold is 14°C-16°C.

13. The operating method according to any one of claims 2 to 7, wherein: The first temperature range is greater than or equal to 90°C and less than or equal to 100°C; the second temperature range is greater than or equal to 70°C and less than 90°C; the third temperature range is greater than or equal to 40°C and less than 70°C.

14. An operating device for a cooking appliance, comprising: A set temperature acquisition module, used to acquire the set temperature of the cooking appliance; An operation strategy matching module, used to determine the operation strategy of the cooking appliance according to the temperature range of the set temperature; The heating control module is used to control the operation of at least one of the top heating tube, the bottom heating tube and the steam generator of the cooking appliance according to the operation strategy.

15. A cooking appliance, comprising a housing, a top heating tube, a bottom heating tube, a steam generator and a controller, wherein the top heating tube is arranged on a first inner surface of the housing, and the bottom heating tube is arranged on a second inner surface of the housing opposite to the first inner surface, and the top heating tube, the bottom heating tube and the steam generator are respectively connected to the controller, and the controller is used to execute the steps of the operating method described in any one of claims 1 to 13.

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

17. A computer-readable storage medium having a computer program stored thereon, wherein: When the computer program is executed by a processor, the steps of the operating method according to any one of claims 1 to 13 are implemented.

18. A computer program product comprising a computer program, wherein: When the computer program is executed by a processor, the steps of the operating method described in any one of claims 1 to 13 are implemented.

Images