Cooking appliance, control method thereof, and computer readable storage medium

Abstract

The present disclosure relates to a cooking appliance and a control method thereof, and a computer readable storage medium. The cooking appliance comprises a heating device and a cooking cavity. The control method comprises: starting the heating device, and performing temperature rising control on the temperature of the cooking cavity, wherein the heating device is turned off after the cooking cavity is heated to a temperature greater than or equal to a set temperature; performing constant temperature control on the temperature of the cooking cavity, wherein the heating device is started when the heating device is turned off and the temperature of the cooking cavity drops to less than or equal to a first temperature; the heating device is turned off when the heating device is turned on and the temperature of the cooking cavity rises to greater than or equal to a second temperature; the above two operation steps are cyclically executed until a stop command is received, wherein the first temperature is greater than the set temperature, and the second temperature is less than the set temperature. By starting heating in advance and stopping heating in advance, the temperature fluctuation range can be reduced.

Description

Technical Field

[0001] This disclosure relates to the field of cooking technology, and in particular to a cooking utensil and its control method, and a computer-readable storage medium. Background Technology

[0002] In related technologies, cooking appliances turn heating on or off by checking if the temperature detected by a temperature sensor exceeds a set value. If it does, heating is turned off; otherwise, it is turned on. This control method is logically simple, but it results in large temperature fluctuations, affecting cooking performance. Summary of the Invention

[0003] This disclosure provides a cooking appliance and its control method, as well as a computer-readable storage medium, to at least solve the problem of large temperature fluctuation range in the related art, or it may not solve any of the above-mentioned problems.

[0004] According to a first aspect of this disclosure, a method for controlling a cooking appliance is provided. The cooking appliance includes a heating device and a cooking cavity. The control method includes: activating the heating device to control the temperature of the cooking cavity, wherein after heating the cooking cavity to a temperature greater than or equal to a set temperature, the heating device is turned off; maintaining a constant temperature of the cooking cavity, wherein when the heating device is turned off and the temperature of the cooking cavity drops to less than or equal to a first temperature, the heating device is activated; when the heating device is activated and the temperature of the cooking cavity rises to greater than or equal to a second temperature, the heating device is turned off; and the above two operation steps are repeated until a stop command is received, wherein the first temperature is greater than the set temperature and the second temperature is less than the set temperature.

[0005] According to the control method of the cooking appliance disclosed herein, after basic heating control is completed, even after the heating device is turned off, the temperature of the cooking cavity will continue to rise above the set temperature due to the residual heat of the heating device, and the temperature after the rise will be greater than the first temperature. Afterward, the temperature of the cooking cavity is kept constant. During constant temperature control, on the one hand, when the heating device is restarted during the temperature drop of the cooking cavity, because the heating device temperature is low at the beginning, the heat cannot be well transferred to the cooking cavity, so the temperature of the cooking cavity will continue to drop. After the heating device heats up, the heat is fully transferred to the cooking cavity, and the temperature will begin to rise again. By setting a first temperature higher than the set temperature and starting the heating device when the temperature of the cooking cavity drops below the first temperature, heating can begin earlier, thereby reducing the subsequent temperature drop, raising the lower limit of temperature fluctuation, and narrowing the temperature fluctuation range. On the other hand, because residual heat remains immediately after heating is stopped, the temperature of the cooking cavity will continue to rise. After the heating device has cooled sufficiently, the temperature will begin to drop. By setting a second temperature lower than the set temperature and turning off the heating device when the temperature in the cooking cavity rises above the second temperature, heating can be stopped in advance. The residual heat of the heating device can then be used to complete the subsequent heating, thereby reducing the subsequent temperature rise, lowering the upper limit of temperature fluctuation, and narrowing the temperature fluctuation range. During the cooking process, a smaller temperature fluctuation range can keep the ambient temperature of the food (i.e., the temperature of the cooking cavity) stable near the set temperature, improving cooking thermal efficiency and cooking effect.

[0006] In some embodiments, after the start / stop state of the heating device is changed at least once, the start / stop state of the heating device is kept unchanged for a set period of time.

[0007] In these embodiments, as described above, after changing the on / off state of the heating device, the temperature of the cooking cavity will maintain its original trend for a short period of time. By not switching the on / off state of the heating device for a set time after at least one start or stop of the heating device, that is, not turning the heating device off or on for the corresponding set time, sufficient time can be allowed for the operation of starting and stopping the heating device to take effect, that is, ensuring that the temperature has risen after the heating device is started, or that the temperature has fallen after the heating device is turned off. After passing through this stage where the temperature change trend remains unchanged, the temperature will stabilize according to a new trend, that is, become a stable rise or fall. At this time, the temperature magnitude can be directly judged, which helps to simplify the control scheme and ensures the stability of the control process.

[0008] In some embodiments, the step of controlling the temperature of the cooking cavity by raising the temperature further includes: starting a first delay timer when the temperature of the cooking cavity is greater than or equal to the set temperature; and ending the temperature control when the time of the first delay timer expires. The step of controlling the temperature of the cooking cavity by maintaining a constant temperature includes: (a) comparing the temperature of the cooking cavity with the first temperature when the heating device is off; (b) starting the heating device and a second delay timer when the temperature of the cooking cavity is less than or equal to the first temperature; (c) comparing the temperature of the cooking cavity with the second temperature when the time of the second delay timer expires; (d) turning off the heating device and starting a third delay timer when the temperature of the cooking cavity is greater than or equal to the second temperature; and (e) returning to step (a) when the time of the third delay timer expires.

[0009] In these embodiments, a delay comparison is specifically defined, which can directly skip the stage of temperature rise to the first temperature after the heating device is turned off and the stage of temperature drop to the second temperature after the heating device is turned on, based on the fluctuation characteristics of the heating curve. The determination of whether the cooking cavity temperature is in the rising or falling phase is achieved by using a delay method. This solution only requires configuring reasonable timing durations for the first, second, and third delay timers. When the cooking cavity temperature is greater than or equal to the second temperature after the second delay timer expires, it is considered that the cooking cavity temperature has risen to greater than or equal to the second temperature. Conversely, when the cooking cavity temperature is less than or equal to the first temperature after the first or third delay timer expires, it is considered that the cooking cavity temperature has dropped to less than or equal to the first temperature. The control strategy is simple and helps reduce the computational load.

[0010] In some embodiments, the difference between the first temperature and the set temperature is negatively correlated with the set temperature.

[0011] In these embodiments, the difference between the first temperature and the set temperature can be understood as the offset of the first temperature relative to the set temperature. Since the higher the set temperature, the greater the power of the heating device tends to be, and the easier it is for the temperature of the cooking cavity to rise after the heating device is started, by limiting the offset to be negatively correlated with the set temperature, that is, the higher the set temperature, the smaller the offset, the heating device can be started only when the temperature of the cooking cavity drops sufficiently, reducing the risk of the heating device starting too early and causing the temperature of the cooking cavity to be too high or even continuously higher than the set temperature. This ensures that the temperature of the cooking cavity fluctuates around the set temperature and maintains the continuity of constant temperature control.

[0012] In some embodiments, the difference between the set temperature and the second temperature is negatively correlated with the set temperature.

[0013] In these embodiments, the difference between the set temperature and the second temperature can be understood as the offset of the second temperature relative to the set temperature. Since the higher the set temperature, the higher the temperature of the cooking cavity itself, the greater the heat dissipation temperature difference, and the easier it is to cool down, by limiting the offset to be negatively correlated with the set temperature, that is, the higher the set temperature, the smaller the offset, the heating device can be turned off only when the temperature of the cooking cavity rises high enough, reducing the risk of the heating device turning off too early, causing the temperature of the cooking cavity to be too low or even continuously lower than the set temperature. This ensures that the temperature of the cooking cavity fluctuates around the set temperature while maintaining the continuity of constant temperature control.

[0014] In some embodiments, the difference between the first temperature and the set temperature is greater than 0 and less than or equal to 4°C; and / or the difference between the first temperature and the set temperature is greater than 0 and less than or equal to 4°C.

[0015] In these embodiments, the offset of the first temperature and / or the second temperature relative to the set temperature is specifically defined to be between 0 and 4°C, and can be equal to 4°C. An offset greater than 0 ensures that the first temperature is higher than the set temperature and the second temperature is lower than the set temperature, thereby enabling the heating device to be started and stopped earlier, thus reducing the temperature fluctuation range. Keeping the offset below 4°C allows it to be controlled within a reasonable range, reducing abnormal cooking cavity temperature caused by the heating device starting or stopping too early, ensuring that the cooking cavity temperature fluctuates around the set temperature while maintaining the continuity of constant temperature control.

[0016] In some embodiments, when the set temperature is greater than 220°C, the difference between the first temperature and the set temperature is 1°C, and the difference between the set temperature and the second temperature is 1°C; when the set temperature is greater than 180°C and less than or equal to 220°C, the difference between the first temperature and the set temperature is 2°C, and the difference between the set temperature and the second temperature is 2°C; when the set temperature is less than or equal to 180°C, the difference between the first temperature and the set temperature is 3°C, and the difference between the set temperature and the second temperature is 3°C.

[0017] In these embodiments, the set temperature is specifically divided into three levels with 220°C and 180°C as the boundary, and the corresponding deviations of the first and second temperatures are configured respectively. This can ensure that the deviation is negatively correlated with the set temperature, reduce the amount of pre-stored data, simplify the control scheme, and cover commonly used set temperature ranges.

[0018] In some embodiments, the timing range of the first delay timer is 5 to 10 seconds; and / or the timing range of the second delay timer is 5 to 10 seconds; and / or the timing range of the third delay timer is 5 to 10 seconds.

[0019] In these embodiments, the timing ranges of the first delay timer, the second delay timer, and / or the third delay timer are specifically defined. The lower limit ensures sufficient delay time to effectively avoid the stage where the temperature rises to the first temperature after the heating device is turned off, and the stage where the temperature drops to the second temperature after the heating device is turned on. The upper limit reasonably controls the delay, reducing the control delay of the heating device caused by excessive delay, which helps to start or stop the heating device in a timely manner and reduce the temperature fluctuation range of the cooking cavity.

[0020] In some embodiments, the operation of turning off the heating device after heating the cooking cavity to a temperature greater than or equal to the set temperature includes: starting a heating delay timer when the temperature of the cooking cavity is greater than or equal to the set temperature; and turning off the heating device when the heating delay timer expires.

[0021] In these embodiments, during temperature control, once the cooking cavity reaches the set temperature, a delay is added before shutting off the heating device. This allows the temperature of the cooking cavity to be raised to a higher level beforehand, achieving a temperature surge. This allows for the storage of higher cooking heat in advance, ensuring that the temperature does not drop too low later, thus improving cooking efficiency. Simultaneously, because the food temperature is low at the beginning of cooking, it will not burn even if the temperature is high.

[0022] In some embodiments, the stop command includes a pause command, and the control method further includes: upon receiving the pause command, if a start command is received, activating the heating device to re-control the temperature rise of the cooking cavity.

[0023] In these embodiments, the stop command specifically includes a pause command, allowing users to conveniently pause heating as needed. Furthermore, if the thermostat stops upon receiving a pause command, heating can resume upon receiving a start command, resuming cooking. By configuring the resume heating operation to re-enable temperature control, the temperature can be raised back to the set temperature before shutting off the heating device, rather than simply raising the temperature to a second temperature and then shutting it off based on the thermostat control. This ensures that the temperature inside the cooking cavity is sufficiently raised when cooking resumes, guaranteeing the cooking effect after resumption and reducing the risk of slow heating, low efficiency, and extended cooking time due to subsequent low temperatures.

[0024] In some embodiments, the control method further includes: starting a heating timer when the heating device is activated to control the temperature of the cooking cavity; and generating the stop command when the heating timer expires.

[0025] In these embodiments, the control method is further defined to include determining when the constant temperature control ends based on the set heating duration of the heating timer. Specifically, the heating timer starts timing when the heating device is started by the temperature rise control, and a stop command is generated to terminate the constant temperature control when the time is up. Cooking can be ended in a timely manner according to the user's cooking needs, ensuring the reliability of the control and the convenience of user operation.

[0026] According to a second aspect of this disclosure, a cooking appliance is provided, comprising: a cooking cavity; a heating device for raising the temperature of the cooking cavity; at least one processor; and at least one memory storing computer-executable instructions, wherein the computer-executable instructions, when executed by the at least one processor, cause the at least one processor to perform a control method for the cooking appliance according to this disclosure. Therefore, the cooking appliance according to this disclosure possesses all the beneficial effects of the control method for the cooking appliance according to this disclosure, which will not be elaborated further here.

[0027] In some embodiments, the cooking appliance further includes a fan for blowing air near the heating device toward the cooking cavity, the fan operating continuously during the heating control and the constant temperature control of the cooking cavity.

[0028] In these embodiments, by configuring a fan, after the heating device is started and fully heated, hot air near the heating device can be blown into the cooking cavity to achieve baking heating. By controlling the fan to run continuously during temperature rise and constant temperature control, the damage to the motor caused by frequent fan switching can be reduced, which helps to extend the service life of the fan. Specifically, the cooking appliance is an air fryer.

[0029] According to a third aspect of this disclosure, a computer-readable storage medium is provided that, when instructions in the computer-readable storage medium are executed by at least one processor, causes the at least one processor to perform a control method for a cooking appliance according to this disclosure. Therefore, the computer-readable storage medium according to this disclosure has all the beneficial effects of the control method for a cooking appliance according to this disclosure, which will not be elaborated further here.

[0030] According to a fourth aspect of this disclosure, a computer program product is provided, including computer instructions that, when executed by at least one processor, implement the control method for a cooking appliance according to this disclosure. Therefore, the computer program product according to this disclosure possesses all the beneficial effects of the control method for a cooking appliance according to this disclosure, which will not be elaborated further here.

[0031] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure, and are not intended to unduly limit this disclosure.

[0033] Figure 1 This is a flowchart illustrating a control method for a cooking appliance according to an exemplary embodiment of the present disclosure.

[0034] Figure 2 This shows the temperature change curve at the center of the cooking cavity in the relevant technology.

[0035] Figure 3 This is a temperature change curve at the center of the cooking cavity according to an exemplary embodiment of the present disclosure.

[0036] Figure 4 This is a flowchart illustrating a control method for a cooking appliance according to a second embodiment of the present disclosure, which performs constant temperature control on the cooking cavity.

[0037] Figure 5 This is a flowchart illustrating a control method for a cooking appliance according to a third embodiment of the present disclosure, which performs constant temperature control on the cooking cavity.

[0038] Figure 6 This is a temperature change curve at the center of the cooking cavity under two opening scenarios according to an exemplary embodiment of the present disclosure.

[0039] Figure 7 This is a block diagram illustrating a cooking appliance according to an exemplary embodiment of the present disclosure.

[0040] Figure 8 This is a schematic diagram illustrating the structure of a cooking appliance according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0041] To enable those skilled in the art to better understand the technical solutions of this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0042] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following examples do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0043] It should be noted that the phrase "at least one of several items" in this disclosure refers to three parallel cases: "any one of the several items", "a combination of any number of the several items", and "all of the several items". For example, "including at least one of A and B" includes the following three parallel cases: (1) including A; (2) including B; (3) including A and B. As another example, "performing at least one of step one and step two" indicates the following three parallel cases: (1) performing step one; (2) performing step two; (3) performing both step one and step two.

[0044] According to exemplary embodiments of the present disclosure, a method for controlling a cooking appliance may be provided, the cooking appliance including a heating device and a cooking cavity.

[0045] Figure 1 This is a flowchart illustrating a control method for a cooking appliance according to an exemplary embodiment of the present disclosure.

[0046] Reference Figure 1 In step 101, the set temperature is received. The set temperature is the temperature that the user expects to heat to. Optionally, in some other embodiments, the set temperature may also be a default value, which does not require user setting. Of course, the user can also modify the default value or override the default value by inputting the set temperature.

[0047] In step 102, the heating device is activated to control the temperature of the cooking cavity. Once the cooking cavity is heated to a temperature greater than or equal to the set temperature, the heating device is turned off. This initial temperature control, based on the set temperature, creates the high-temperature environment required for cooking within the cooking cavity.

[0048] It is understandable that even after the heating device is turned off, the temperature of the cooking cavity will continue to rise above the set temperature due to the residual heat of the heating device, and the temperature after the rise will be greater than the first temperature described below. Once the temperature of the cooking cavity has risen sufficiently or even begun to fall, the heating control can be terminated, and subsequent constant temperature control of the cooking cavity can begin. To ensure that the temperature of the cooking cavity has risen sufficiently, as an example, step 102 may further include: starting a first delay timer when the temperature of the cooking cavity is greater than or equal to the set temperature; and ending the heating control when the timer expires. That is, sufficient heating is ensured by waiting for a period of time. Of course, this example requires a reasonable configuration of the first delay timer's duration. As an example, step 102 may also further include: ending the heating control after the temperature of the cooking cavity is greater than the first temperature. That is, when the temperature of the cooking cavity is less than or equal to the first temperature, the heating control is not terminated immediately. It is ensured that the temperature of the cooking cavity has risen sufficiently above the first temperature before ending the heating control and entering constant temperature control. Of course, other reasonable methods can also be used to wait for the temperature of the cooking cavity to rise sufficiently, and this disclosure does not impose any restrictions.

[0049] Optionally, step 102, which involves heating the cooking cavity to a temperature greater than or equal to the set temperature and then turning off the heating device, specifically includes: starting a heating delay timer when the temperature of the cooking cavity is greater than or equal to the set temperature; and turning off the heating device after the heating delay timer expires. During temperature control, by adding a delay period after the cooking cavity reaches the set temperature before turning off the heating device, the temperature of the cooking cavity can be raised to a higher level first, achieving a temperature surge. This allows for the storage of higher cooking heat in advance, ensuring that the subsequent temperature will not be too low, thus improving cooking efficiency. Simultaneously, because the food temperature is low at the beginning of cooking, even if the temperature is high, the food will not burn.

[0050] It's understandable that the core of temperature control is to shut down the heating device at the appropriate time. Therefore, the moment the heating device is shut down must be earlier than or equal to the moment the temperature control ends. In other words, when using a first delay timer to wait for temperature rise, the start times of the first delay timer and the heating delay timer are the same. The duration of the first delay timer must be greater than or equal to the duration of the heating delay timer. When the duration of the first delay timer is relatively longer, the heating device can be shut down first when the heating delay timer expires, but the temperature control doesn't immediately end. The temperature control then ends and enters constant temperature control when the first delay timer expires. When the duration of the first delay timer is equal to the duration of the heating delay timer, the temperature control ends and enters constant temperature control simultaneously with shutting down the heating device. In this case, the first delay timer and the heating delay timer can be the same timer, reducing the number of timers. When using a scheme where the temperature in the cooking cavity exceeds a first temperature, the temperature control doesn't end the moment the temperature in the cooking cavity exceeds the first temperature. Instead, it ends when the heating delay timer expires and the heating device is shut down after the temperature exceeds the first temperature. However, when the temperature in the cooking cavity exceeds the first temperature, the heating delay timer is likely not yet expired. By the time the heating delay timer expires, the temperature in the cooking cavity has risen significantly due to the delayed heating, and therefore is likely already above the first temperature. Thus, it is no longer necessary to determine whether the temperature in the cooking cavity exceeds the first temperature, simplifying the control scheme. In other words, as an example, when the heating device is turned off in conjunction with the heating delay timer, the aforementioned operation of waiting for the temperature in the cooking cavity to rise sufficiently is no longer necessary; the heating control naturally ends when the heating device is turned off.

[0051] In step 103, the temperature of the cooking cavity is controlled at a constant temperature. Specifically, when the heating device is turned off and the temperature of the cooking cavity drops to a level less than or equal to a first temperature, the heating device is activated; when the heating device is turned on and the temperature of the cooking cavity rises to a level greater than or equal to a second temperature, the heating device is turned off. These two steps are repeated until a stop command is received. The first temperature is greater than the set temperature, and the second temperature is less than the set temperature. After completing the basic heating phase, the temperature is controlled at a constant temperature in the cooking cavity.

[0052] Specifically, during constant temperature control, on the one hand, when the heating device is restarted during the temperature drop of the cooking cavity, the initial heat transfer to the cavity is insufficient due to the low initial temperature of the heating device, causing the temperature to continue to drop. Once the heating device has fully transferred heat, the temperature begins to rise. By setting a first temperature higher than the set temperature and activating the heating device when the temperature drops below this first temperature, heating can begin earlier, reducing subsequent temperature drops, raising the lower limit of temperature fluctuation, and narrowing the temperature fluctuation range. On the other hand, since residual heat remains immediately after heating stops, the temperature of the cooking cavity will continue to rise. After the heating device has cooled sufficiently, the temperature will begin to drop. By setting a second temperature lower than the set temperature and shutting off the heating device when the temperature rises above this second temperature, heating can be stopped earlier, utilizing the residual heat to complete the subsequent temperature rise, thus reducing subsequent temperature increases, lowering the upper limit of temperature fluctuation, and narrowing the temperature fluctuation range. During cooking, a smaller temperature fluctuation range allows the ambient temperature of the food (i.e., the temperature of the cooking cavity) to remain stable near the set temperature, improving cooking thermal efficiency and cooking results.

[0053] In this process, after the heating device is activated during the temperature drop, the temperature of the cooking cavity will initially decrease from near the first temperature. At this point, the temperature of the cooking cavity is higher than the second temperature. If the heating device is turned off at this time in conjunction with the second temperature, on the one hand, the heat provided by the heating device in a short period of time is insufficient to prevent the temperature of the cooking cavity from continuing to drop; on the other hand, it will also cause a control contradiction. According to the exemplary embodiment of this disclosure, by skipping the temperature drop phase and delaying the heating device to be turned off in conjunction with the second temperature when the temperature rises, this contradiction can be resolved, ensuring the stability and reliability of the control. In addition, since the heating device is turned off only after confirming that the cooking cavity has already heated up, it can be ensured that residual heat is used to continue heating, avoiding the temperature of the cooking cavity dropping directly to a lower level and making it impossible to activate the heating device in conjunction with the first temperature, thereby maintaining the continuity of constant temperature control. Similarly, after the heating device is turned off, the temperature of the cooking cavity will initially rise from near the second temperature. At this time, the temperature of the cooking cavity is lower than the first temperature. If the heating device is turned on in conjunction with the first temperature at this time, it will cause a control contradiction. By skipping the temperature rise phase and delaying the heating device to be turned on in conjunction with the first temperature when the temperature drops, this contradiction can be resolved. Furthermore, since the heating device is activated only after confirming that the cooking cavity has cooled down, it ensures that the temperature continues to drop by utilizing the delay in heat transfer from the heating device, preventing the temperature of the cooking cavity from rising directly to a higher level and making it impossible to shut off the heating device in conjunction with the second temperature.

[0054] Specifically, the cooking appliance also includes a fan to blow air from near the heating element into the cooking cavity. This means the cooking appliance can use a baking heating method, such as an air fryer. The fan runs continuously while the temperature of the cooking cavity is controlled for both heating and maintaining a constant temperature. When the heating element is immediately turned off, the fan continues to blow residual heat into the cooking cavity, causing it to continue heating up. When the heating element is immediately turned on, the fan initially blows cooler air into the cooking cavity, causing it to continue cooling down.

[0055] In some embodiments, optionally, after changing the on / off state of the heating device at least once, the on / off state of the heating device is kept unchanged for a set period of time. As mentioned above, after changing the on / off state of the heating device, the temperature of the cooking cavity will maintain its original trend for a short period of time. By not switching the on / off state of the heating device for a set period of time after starting or stopping the heating device at least once, that is, not turning the heating device off or on for the corresponding set period of time, sufficient time can be ensured for the operation of starting and stopping the heating device to take effect, that is, ensuring that the temperature has risen after starting the heating device, or ensuring that the temperature has dropped after turning off the heating device. And after passing through this stage where the temperature trend remains unchanged, the temperature will stabilize according to the new trend, that is, become a stable rise or fall. At this time, the temperature magnitude can be directly judged, which helps to simplify the control scheme and ensure the stability of the control process. Optionally, after each change in the on / off state of the heating device, the on / off state of the heating device is kept unchanged for a set period of time.

[0056] It is understandable that the requirement to keep the heating device's on / off state unchanged within the set time period also applies to step 102. Whether in step 102 or 103, the specific operations performed to meet this requirement can be flexibly adapted, as long as the on / off state of the heating device remains unchanged within the set time period. For example, a delay timer can be used to pause the switching of the heating device's on / off state during the timing period.

[0057] Next, a control experiment was conducted using a set temperature of 200℃ and a set heating time of 25 minutes as an example. Figure 2 This shows the temperature change curve at the center of the cooking cavity in the relevant technology. Figure 3 This illustrates the temperature change curve at the center of the cooking cavity according to an exemplary embodiment of the present disclosure. It should be noted that... Figure 2 and Figure 3 The test measures the temperature at the center of the cooking cavity. However, in actual operation, the temperature sensor used for control is typically located on the side of the cooking cavity, such as the top or bottom. Therefore, the control is based on the temperature of the side of the cooking cavity. Compared to the center, heat dissipates more easily from the side, so although the temperature of the cooking cavity is the same, the temperature on the side will be lower than the temperature at the center. Figure 2 and Figure 3 The overall temperature during the isothermal control phase of the temperature change curve is above 200℃. It should also be noted that... Figure 2 and Figure 3 The cooking process is divided into different stages based on temperature changes, but this does not strictly correspond to the aforementioned temperature rise control and constant temperature control. Figure 3 The presence of a temperature surge phase is due to the use of the aforementioned heating delay timer. Furthermore, the temperature at the center of the cooking cavity was sampled every 3 seconds during the experiment. Figure 2 and Figure 3 In the x-axis, each unit represents 3 seconds, corresponding to one sampling.

[0058] Reference Figure 2 If the heating device is turned off when the temperature in the cooking cavity is lower than the set temperature, and then turned on when the temperature in the cooking cavity is higher than the set temperature, it will cause large temperature fluctuations, such as... Figure 2 As shown by the two reference lines, the temperature fluctuation reached 12°C. (Refer to...) Figure 3 By employing temperature control, the heating device can be activated in advance during cooling and deactivated in advance during heating, significantly reducing the temperature fluctuation range. Figure 3 As shown by the two reference lines, the temperature fluctuation is only 5°C.

[0059] For step 103, there are different ways to determine whether the temperature of the cooking cavity is rising or falling when performing constant temperature control. Three examples are given below.

[0060] In the first embodiment, optionally, the temperature of the cooking cavity can be detected at a certain frequency during the control process, and the current temperature can be determined to be rising or falling by recording the changes in the temperature over a period of time.

[0061] In the second and third embodiments, as mentioned above, after each change in the start / stop state of the heating device, the start / stop state of the heating device is kept unchanged for a set period of time.

[0062] Figure 4 This is a flowchart illustrating a control method for a cooking appliance according to a second embodiment of the present disclosure, used to maintain a constant temperature in the cooking cavity. It is understood that... Figure 4 The flowchart shown can loop indefinitely, and the loop terminates when a stop command is received.

[0063] Reference Figure 4In step 401, with the heating device off, it is determined whether the temperature of the cooking cavity is less than or equal to the first temperature. If yes, proceed to step 402; otherwise, return to step 401 and continue to determine the temperature. Since step 102 has already ensured that the temperature of the cooking cavity has risen sufficiently, a yes result here can be considered as the temperature of the cooking cavity having dropped to less than or equal to the first temperature.

[0064] In step 402, the heating device and the second delay timer are started to enable the heating device to start in advance.

[0065] In step 403, it is determined whether the time of the second delay timer has been reached. If so, it is assumed that the temperature of the cooking cavity has dropped sufficiently, or may even be rising. Proceed to step 404 to prepare to turn off the heating device. If not, return to step 403 and continue timing, without proceeding to step 404.

[0066] In step 404, it is determined whether the temperature of the cooking cavity is greater than or equal to the second temperature. If so, it is considered that the temperature of the cooking cavity has risen to be greater than or equal to the second temperature, and the process proceeds to step 405. If not, the process returns to step 404 and continues to determine the temperature.

[0067] In step 405, the heating device is turned off and the third delay timer is started to turn off the heating device in advance.

[0068] In step 406, it is determined whether the time of the third delay timer has been reached. If so, it is assumed that the temperature of the cooking cavity has risen sufficiently, or may even be falling. The process returns to step 401 to prepare for starting the heating device. If not, the process returns to step 406 to continue timing, and the determination in step 401 is not performed for the time being.

[0069] In this embodiment, delay comparison is specifically achieved through a time delay. Based on the fluctuation characteristics of the heating curve, it can directly skip the stage where the temperature rises to the first temperature after the heating device is turned off, and the stage where the temperature drops to the second temperature after the heating device is turned on. The determination of whether the cooking cavity temperature is in the rising or falling phase is achieved by using a time delay. This solution only requires configuring reasonable timing durations for the second and third delay timers (e.g., the aforementioned preset durations). When the cooking cavity temperature is greater than or equal to the second temperature after the second delay timer expires, it is considered that the cooking cavity temperature has risen to greater than or equal to the second temperature. Similarly, when the cooking cavity temperature is less than or equal to the first temperature after the third delay timer expires, it is considered that the cooking cavity temperature has dropped to less than or equal to the first temperature. The control strategy is simple and helps reduce the computational load.

[0070] Optionally, the timing range of the first delay timer is 5 to 10 seconds; and / or the timing range of the second delay timer is 5 to 10 seconds; and / or the timing range of the third delay timer is 5 to 10 seconds. This lower limit ensures sufficient delay time to effectively avoid the stage where the temperature rises to the first temperature after the heating device is turned off, and the stage where the temperature drops to the second temperature after the heating device is turned on. Its upper limit allows for reasonable control of the delay, reducing the control delay of the heating device caused by excessive delay, and helps to start or stop the heating device in a timely manner, reducing the temperature fluctuation range of the cooking cavity. Further, the timing range of the first, second, and / or third delay timers is 6 to 8 seconds. In practical applications, a specific timing duration can be selected from these ranges. Optionally, the higher the set temperature, the longer the timing duration.

[0071] Figure 5 This is a flowchart illustrating a control method for a cooking appliance according to a third embodiment of the present disclosure, used to maintain a constant temperature in the cooking cavity. It is understood that similar... Figure 4 , Figure 5 The flowchart shown can also loop indefinitely, terminating when a stop command is received.

[0072] Reference Figure 5 In step 501, with the heating device off, it is determined whether the temperature of the cooking cavity is less than or equal to the first temperature. If yes, proceed to step 502; otherwise, return to step 501 and continue to determine the temperature. Since step 102 has already ensured that the temperature of the cooking cavity has risen sufficiently, if the determination result is yes, it can be assumed that the temperature of the cooking cavity has dropped to less than or equal to the first temperature, and it can be assumed that the aforementioned set time has elapsed since the heating device was turned off.

[0073] Step 502: Start the heating device to achieve early start-up of the heating device.

[0074] Step 503: Determine whether the temperature of the cooking cavity is lower than the second temperature. If yes, it is considered that the temperature of the cooking cavity has dropped sufficiently and there will be no control conflict with steps 504 and 505. Proceed to step 504. If no, return to step 503 and continue to wait for the temperature to drop.

[0075] Step 504: Determine whether the temperature of the cooking cavity is greater than or equal to the second temperature. If yes, it is considered that the temperature of the cooking cavity has risen to greater than or equal to the second temperature, and it can be considered that the aforementioned set time has elapsed since the heating device was started. Proceed to step 505. If no, return to step 504 and continue to make temperature judgments.

[0076] Step 505: Turn off the heating device to achieve early shutdown of the heating device.

[0077] Step 506: Determine whether the temperature of the cooking cavity is greater than the first temperature. If yes, it is considered that the temperature of the cooking cavity has risen sufficiently and there will be no control conflict with steps 501 and 502. Return to step 501. If no, return to step 506 and continue to wait for the temperature to rise.

[0078] In this embodiment, the temperature fluctuation pattern is utilized to achieve delayed comparison through temperature comparison. Specifically, if it is first confirmed that the temperature of the cooking cavity is lower than the second temperature, the on / off state of the heating device can be maintained during the process of the temperature dropping from the first temperature to the second temperature. If it is first confirmed that the temperature of the cooking cavity is higher than the first temperature, the on / off state of the heating device can be maintained during the process of the temperature rising from the second temperature to the first temperature. This directly avoids the stage of temperature dropping to the second temperature after the heating device is turned on, and the stage of temperature rising to the first temperature after the heating device is turned off. There is no need to determine whether the temperature of the cooking cavity is rising or falling. The control strategy is simple and reliable, which helps to reduce the computational load.

[0079] For step 103, the stop command may include the following two types of commands.

[0080] In some embodiments, the stop command includes a pause command. In this case, the control method further includes: after receiving the pause command, if a start command is received, returning to step 102 to start the heating device and re-control the temperature of the cooking cavity.

[0081] In these embodiments, the stop command specifically includes a pause command, allowing users to conveniently pause heating as needed. Optionally, a pause button is configured for the cooking appliance, allowing the user to generate a pause command by triggering the pause button. Furthermore, when the thermostat stops upon receiving a pause command, heating can resume upon receiving a start command, resuming cooking. By configuring the resume heating operation to re-enable temperature control, the temperature can be raised back to the set temperature before shutting off the heating device, rather than simply raising the temperature to a second temperature and then shutting it off according to the thermostat. This ensures that the temperature inside the cooking cavity is sufficiently raised when cooking resumes, guaranteeing the cooking effect after resumption and reducing the risk of slow heating, low efficiency, and extended cooking time due to subsequent low temperatures. Figure 6 This illustrates the temperature change curve at the center of the cooking cavity under two opening scenarios according to an exemplary embodiment of this disclosure, with the temperature set at 200°C. No pause command was generated when the cooking appliance was opened for the first time (this was a forced opening during testing, not typical daily use); a pause command was generated when the lid was opened for the second time. (Refer to...) Figure 6It can be seen that when the lid was opened for the first time, a large amount of heat was lost from the cooking cavity. After the lid was closed, constant temperature control continued, and the highest temperature in the cooking cavity only reached 204℃. When the lid was opened for the second time, a pause command was generated. After the lid was closed and a start command was generated, the heating phase resumed, and the temperature could be heated up to 211℃.

[0082] Optionally, a start button can be configured for the cooking appliance. Users can generate a start command by triggering the start button. Since the pause button and the start button are often used together, they can also be combined into one. Triggering the button in the running state will generate a pause command, and triggering the button in the stopped state will generate a start command.

[0083] Understandably, the pause command is effective throughout the entire cooking process. At any time, upon receiving a pause command, the heating element shuts off, the cooking appliance stops operating, and the fan also turns off. Conversely, upon receiving a start command after the pause command, the heating element and fan restart, returning to the heating phase.

[0084] Optionally, the pause / start command can be combined with the aforementioned heating delay timer. That is, upon receiving a pause command, if a start command is also received, the heating device is activated to re-control the temperature rise of the cooking cavity. When the temperature of the cooking cavity is greater than or equal to the set temperature, the heating delay timer is activated, and when the heating delay timer expires, the heating device is turned off. This allows for a preheating process after resuming cooking, raising the temperature of the cooking cavity to a higher level, which helps improve the cooking effect after resuming cooking. Simultaneously, when a user triggers the pause button on the cooking appliance, it is usually to process the food, such as turning or stirring it to ensure even heating. This requires opening the lid of the cooking appliance, causing heat loss from the cooking cavity. Furthermore, after processing, the parts of the food that were not previously heated are more likely to receive heat, so even if the temperature is high, the food will not burn.

[0085] In some embodiments, the stop command includes a command indicating that a timer has elapsed. In step 101, in addition to receiving the set temperature, a set heating duration may also be received. Similar to the set temperature, the set heating duration can also be a default value, requiring no user setting. The user can also modify the default value or override it by inputting a set heating duration. In step 102, when the heating device is started by controlling the temperature rise of the cooking cavity, a heating timer is also started, and a stop command is generated when the heating timer reaches the set heating duration.

[0086] In these embodiments, the control method is further defined to include receiving a set heating duration and determining when to end the constant temperature control based on the set heating duration, where the set heating duration is the desired heating duration set by the user. Specifically, the heating timer starts counting when the heating device is started by the temperature rise control, and generates a stop command to terminate the constant temperature control when the time is up. This allows cooking to end at the appropriate time according to the user's cooking needs, ensuring the reliability of the control and the convenience of user operation.

[0087] Optionally, the heating timer can be combined with a pause / start command. That is, upon receiving a pause command, the heating timer is paused; upon receiving a start command after receiving a pause command, the heating timer resumes timing, and the heating device is restarted to re-control the temperature rise of the cooking cavity. In this case, timing can be stopped during the pause state, ensuring that even if there is an intermediate pause, the overall heating time is not affected, guaranteeing the cooking effect. Furthermore, the user does not need to manually calculate the heating time, improving operational convenience.

[0088] Understandably, although the pause command is also a type of stop command, it is different from the stop command generated when the heating timer reaches the set heating duration. The former is generated when the pause button is triggered, while the latter is generated based on the operation of the heating timer, and the former will affect the operation of the heating timer.

[0089] Optionally, in some embodiments, the difference between the first temperature and the set temperature is negatively correlated with the set temperature. The difference between the first temperature and the set temperature can be understood as the deviation of the first temperature relative to the set temperature. Since the higher the set temperature, the greater the power of the heating device tends to be, and the easier it is for the temperature of the cooking cavity to rise after the heating device is started, by limiting the deviation to be negatively correlated with the set temperature, that is, the higher the set temperature, the smaller the deviation, the heating device can be started only when the temperature of the cooking cavity drops sufficiently. This reduces the risk of the heating device starting too early, causing the temperature of the cooking cavity to be too high, or even continuously exceeding the set temperature. This ensures that the temperature of the cooking cavity fluctuates around the set temperature while maintaining the continuity of constant temperature control.

[0090] In some embodiments, optionally, the difference between the set temperature and the second temperature is negatively correlated with the set temperature. The difference between the set temperature and the second temperature can be understood as the offset of the second temperature relative to the set temperature. Since the higher the set temperature, the higher the temperature of the cooking cavity itself, the greater the heat dissipation temperature difference, and the easier it is to cool down, by limiting the offset to be negatively correlated with the set temperature, that is, the higher the set temperature, the smaller the offset, the heating device can be turned off only when the temperature of the cooking cavity rises high enough, reducing the risk of the heating device turning off too early, resulting in the temperature of the cooking cavity being too low or even continuously below the set temperature. This ensures that the temperature of the cooking cavity fluctuates around the set temperature while maintaining the continuity of constant temperature control.

[0091] In some embodiments, the difference between the first temperature and the set temperature is greater than 0 and less than or equal to 4°C; and / or the difference between the first temperature and the set temperature is greater than 0 and less than or equal to 4°C. An offset greater than 0 ensures that the first temperature is greater than the set temperature and the second temperature is less than the set temperature, thereby enabling the heating device to be started and stopped earlier, thus reducing the temperature fluctuation range. Keeping the offset below 4°C allows it to be controlled within a reasonable range, reducing abnormal cooking cavity temperatures caused by premature starting or stopping of the heating device, ensuring that the cooking cavity temperature fluctuates around the set temperature while maintaining continuous constant temperature control.

[0092] Optionally, when the set temperature is greater than 220°C, the difference between the first temperature and the set temperature is 1°C, and the difference between the set temperature and the second temperature is 1°C; when the set temperature is greater than 180°C and less than or equal to 220°C, the difference between the first temperature and the set temperature is 2°C, and the difference between the set temperature and the second temperature is 2°C; when the set temperature is less than or equal to 180°C, the difference between the first temperature and the set temperature is 3°C, and the difference between the set temperature and the second temperature is 3°C. By using 220°C and 180°C as boundaries, the set temperature can be divided into three levels, and corresponding deviations of the first and second temperatures can be configured for each level. This ensures a negative correlation between the offset and the set temperature, reduces the amount of pre-stored data, simplifies the control scheme, and covers commonly used set temperature ranges.

[0093] Figure 7 This is a block diagram illustrating a cooking appliance according to an exemplary embodiment of the present disclosure.

[0094] Reference Figure 7 The cooking appliance 700 includes at least one memory 701 storing computer-executable instructions, at least one processor 702, a cooking cavity (not shown), and a heating device (not shown). The heating device is used to raise the temperature of the cooking cavity; when the computer-executable instructions are executed by at least one processor 702, they cause the at least one processor to perform a control method for the cooking appliance according to an exemplary embodiment of the present disclosure. Furthermore, the cooking appliance 700 also includes a temperature sensor for detecting the temperature of the cooking cavity.

[0095] In the cooking appliance 700, the processor 702 may include a central processing unit (CPU), a graphics processing unit (GPU), a programmable logic device, a dedicated processor system, a microcontroller, or a microprocessor. By way of example and not limitation, the processor may also include an analog processor, a digital processor, a microprocessor, a multi-core processor, a processor array, a network processor, etc.

[0096] The processor 702 can execute instructions or code stored in the memory 701, which can also store data. Instructions and data can also be sent and received via a network through a network interface device, which can employ any known transmission protocol.

[0097] The memory 701 can be integrated with the processor 702, for example, by placing RAM or flash memory within an integrated circuit microprocessor. Alternatively, the memory 701 can include a separate device, such as an external disk drive, a storage array, or other storage device usable by any database system. The memory 701 and the processor 702 can be operatively coupled, or can communicate with each other, for example, via I / O ports, network connections, etc., enabling the processor 702 to read files stored in the memory.

[0098] In addition, the cooking appliance 700 may also include a video display (such as an LCD display) and a user interface (such as a keyboard, mouse, touch input device, etc.). All components of the cooking appliance 700 can be connected to each other via a bus and / or network.

[0099] In some embodiments, the cooking appliance 700 may optionally include a fan for blowing air near the heating element toward the cooking chamber, the fan operating continuously while the temperature of the cooking chamber is controlled for both heating and temperature control.

[0100] In these embodiments, by configuring a fan, after the heating device is started and fully heated, hot air near the heating device can be blown towards the cooking cavity to achieve baking heating. By controlling the fan to run continuously during temperature rise and constant temperature control, the damage to the motor caused by frequent fan switching can be reduced, which helps to extend the service life of the fan.

[0101] Figure 8 This is a schematic diagram illustrating the structure of a cooking appliance according to an exemplary embodiment of the present disclosure.

[0102] Reference Figure 7 The cooking appliance 700 may specifically be an air fryer. The cooking appliance also includes a lid 703, a heating device 704, a temperature sensor 705, and a fan, all of which are mounted on the lid 703.

[0103] According to exemplary embodiments of the present disclosure, a computer-readable storage medium may also be provided, which, when executed by at least one processor, causes at least one processor to perform a control method for a cooking appliance according to exemplary embodiments of the present disclosure. Examples of computer-readable storage media herein include: read-only memory (ROM), random access programmable read-only memory (PROM), electrically erasable programmable read-only memory (EEPROM), random access memory (RAM), dynamic random access memory (DRAM), static random access memory (SRAM), flash memory, non-volatile memory, CD-ROM, CD-R, CD+R, CD-RW, CD+RW, DVD-ROM, DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-RAM, BD-ROM, BD-R, BD-R LTH, BD-RE, Blu-ray or optical disc storage, hard disk drive (HDD), solid-state drive (SSD), card storage (such as multimedia cards, secure digital (SD) cards, or ultra-fast digital (XD) cards), magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid-state drive, and any other device configured to store a computer program and any associated data, data files, and data structures in a non-transitory manner and to provide the computer program and any associated data, data files, and data structures to a processor or computer so that the processor or computer can execute the computer program. The computer program in the aforementioned computer-readable storage medium can run in an environment deployed in computer devices such as clients, hosts, agent devices, servers, etc. Furthermore, in one example, the computer program and any associated data, data files, and data structures are distributed across a networked computer system, such that the computer program and any associated data, data files, and data structures are stored, accessed, and executed in a distributed manner through one or more processors or computers.

[0104] According to exemplary embodiments of the present disclosure, a computer program product may also be provided, the computer program product including computer instructions that, when executed by at least one processor, cause at least one processor to perform a control method for a cooking appliance according to exemplary embodiments of the present disclosure.

[0105] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0106] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A method for controlling a cooking utensil, characterized in that, The cooking appliance includes a heating device and a cooking cavity, and the control method includes: The heating device is activated to control the temperature of the cooking cavity. After the cooking cavity is heated to a temperature greater than or equal to the set temperature, the heating device is turned off. The temperature of the cooking cavity is controlled at a constant temperature. Specifically, when the heating device is turned off and the temperature of the cooking cavity drops to less than or equal to a first temperature, the heating device is activated; when the heating device is turned on and the temperature of the cooking cavity rises to greater than or equal to a second temperature, the heating device is turned off. These two operation steps are repeated until a stop command is received. The first temperature is greater than the set temperature, and the second temperature is less than the set temperature. The difference between the first temperature and the set temperature is negatively correlated with the set temperature, and / or the difference between the set temperature and the second temperature is negatively correlated with the set temperature. The step of controlling the temperature of the cooking cavity further includes: When the temperature in the cooking cavity is greater than or equal to the set temperature, the first delay timer is activated; The heating control ends when the first delay timer expires; The step of maintaining a constant temperature in the cooking cavity includes: (a) With the heating device off, compare the temperature of the cooking cavity with the first temperature; (b) When the temperature of the cooking cavity is less than or equal to the first temperature, the heating device and the second delay timer are activated; (c) When the timeout period of the second delay timer expires, compare the temperature of the cooking cavity with the second temperature; (d) When the temperature of the cooking cavity is greater than or equal to the second temperature, the heating device is turned off and the third delay timer is started; (e) When the time of the third delay timer arrives, return to step (a).

2. The control method as described in claim 1, characterized in that, After changing the start / stop state of the heating device at least once, the start / stop state of the heating device is kept unchanged for a set period of time.

3. The control method as described in claim 1, characterized in that, When the set temperature is greater than 220℃, the difference between the first temperature and the set temperature is 1℃, and the difference between the set temperature and the second temperature is 1℃. When the set temperature is greater than 180℃ and less than or equal to 220℃, the difference between the first temperature and the set temperature is 2℃, and the difference between the set temperature and the second temperature is 2℃. When the set temperature is less than or equal to 180℃, the difference between the first temperature and the set temperature is 3℃, and the difference between the set temperature and the second temperature is 3℃.

4. The control method as described in claim 1, characterized in that, The difference between the first temperature and the set temperature is greater than 0 and less than or equal to 4°C; and / or The difference between the set temperature and the second temperature is greater than 0 and less than or equal to 4°C.

5. The control method as described in claim 1, characterized in that, The timing range of the first delay timer is 5 to 10 seconds; and / or The second delay timer has a timing range of 5 to 10 seconds; and / or The timing range of the third delay timer is 5 to 10 seconds.

6. The control method according to any one of claims 1 to 5, characterized in that, After heating the cooking cavity to a temperature greater than or equal to the set temperature, the operation of turning off the heating device includes: When the temperature of the cooking cavity is greater than or equal to the set temperature, the heating delay timer is activated; When the heating delay timer expires, the heating device is turned off.

7. The control method according to any one of claims 1 to 5, characterized in that, The stop command includes a pause command, and the control method further includes: Upon receiving the pause command, if a start command is received, the heating device is activated to re-control the temperature rise of the cooking cavity.

8. The control method according to any one of claims 1 to 5, characterized in that, The control method further includes: When the heating device is activated to control the temperature rise of the cooking cavity, a heating timer is started. When the heating timer expires, the stop command is generated.

9. A cooking utensil, characterized in that, include: Cooking cavity; A heating device is used to raise the temperature of the cooking cavity; At least one processor; At least one memory that stores computer-executable instructions. The computer-executable instructions, when executed by the at least one processor, cause the at least one processor to perform the control method of the cooking appliance as described in any one of claims 1 to 8.

10. The cooking appliance as described in claim 9, characterized in that, The cooking appliance also includes: A fan is used to blow air from the vicinity of the heating device toward the cooking cavity. The fan operates continuously when the temperature of the cooking cavity is controlled for both heating and constant temperature.

11. A computer-readable storage medium, characterized in that, When the instructions in the computer-readable storage medium are executed by at least one processor, the at least one processor causes the processor to perform the control method of the cooking appliance as claimed in any one of claims 1 to 8.

12. A computer program product comprising computer instructions, characterized in that, When the computer instructions are executed by at least one processor, they implement the control method for the cooking appliance as described in any one of claims 1 to 8.

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