Temperature Detection Method, Device, Cooking Appliance, and Storage Medium

Abstract

To provide a temperature detection method, a device, a cooking appliance, and a storage medium capable of specifying a state of a temperature of an entire cooking chamber structure accurately to some extent, and thereby reducing an influence on normal cooking of the cooking appliance or on an effect of cooking due to a temperature error of the cooking chamber structure.SOLUTION: There are provided a temperature detection method applied to a cooking appliance in which a fan structure, a cooking chamber structure, and a lid body structure for closing the cooking chamber structure are disposed, a device, the cooking appliance, and a storage medium. The method includes a step for acquiring a detection temperature of the lid body structure, a step for controlling an operation state of the fan structure on the basis of a predetermined detection cycle, and a step for determining a target temperature of the cooking chamber structure on the basis of a change state of the detection temperature, and thereby determines the target temperature for reflecting the temperature state of the cooking chamber structure on the basis of the change state of the detection temperature quickly and accurately.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] This application claims the priority of a Chinese patent application with the application number “202310406978.7” and the application title “Temperature Detection Method, Device, Cooking Appliance and Storage Medium”, which was filed with the Chinese Patent Office on April 14, 2023, and all of its content is incorporated herein by reference.

[0002] This application relates to the field of electrical equipment control technology, and more specifically, to a temperature detection method, device, cooking appliance and storage medium.

Background Art

[0003] Cooking appliances usually perform temperature detection by means of temperature sensors installed in a cooking chamber structure. However, during cooking, the temperature of the cooking chamber structure is non-uniform, and the temperature sensor can only reflect the temperature situation at the detection position and cannot accurately reflect the temperature situation of the entire cooking chamber structure.

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of the above problems, this application provides a temperature detection method, device, cooking appliance and storage medium that can accurately identify to a certain extent the temperature situation of the entire cooking chamber structure, thereby reducing the impact of the temperature error of the cooking chamber structure on the normal cooking or cooking effect of the cooking appliance.

Means for Solving the Problems

[0005] In a first aspect, an embodiment of this application is applicable to a cooking appliance provided with a fan structure, a cooking chamber structure, and a lid structure for closing the cooking chamber structure, and includes steps of obtaining the detected temperature of the lid structure, controlling the operating state of the fan structure based on a predetermined detection period, and determining the target temperature of the cooking chamber structure based on the change situation of the detected temperature.

[0006] In a second aspect, the embodiments of the present application are applicable to a cooking appliance provided with a fan structure, a cooking chamber structure, and a lid structure for closing the cooking chamber structure, and include an acquisition module for acquiring the detected temperature of the lid structure, a control module for controlling the operating state of the fan structure based on a predetermined detection period, and a determination module for determining the target temperature of the cooking chamber structure based on the change situation of the detected temperature. A temperature detection device is further provided.

[0007] In a third aspect, the embodiments of the present application further provide a cooking appliance including a processor, a memory, and one or more application programs stored in the memory and configured to be executed by the processor to implement the above temperature detection method.

[0008] In a fourth aspect, the embodiments of the present application further provide a computer-readable storage medium storing program code that, when executed by a processor, executes the above temperature detection method.

[0009] The technical solution provided in the present application is applicable to a cooking appliance provided with a fan structure, a cooking chamber structure, and a lid structure for closing the cooking chamber structure. The method includes the steps of acquiring the detected temperature of the lid structure, controlling the operating state of the fan structure based on a predetermined detection period, and quickly and accurately determining a target temperature for reflecting the temperature situation of the cooking chamber structure based on the change situation of the detected temperature.

Brief Description of the Drawings

[0010] To more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the description of the embodiments are briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, not all embodiments. Based on the embodiments of the present application, all other embodiments and drawings obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

Figure 1

Figure 2

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Figure 7

Embodiments for Carrying Out the Invention

[0011] In order to enable those skilled in the art to better understand the solution means of the present application, hereinafter, with reference to the drawings in the embodiments of the present application, the technical solution means in the embodiments of the present application will be clearly and completely described.

[0012] The cooking appliance usually performs temperature detection by a temperature sensor installed in the cooking chamber structure. However, during cooking, there is a situation where the temperature in the cooking chamber structure is non-uniform, and the temperature sensor can only reflect the temperature situation at the detection position and cannot accurately reflect the temperature situation of the entire cooking chamber structure.

[0013] If there is an error in the temperature of the cooking chamber structure, it will affect the normal cooking or cooking effect of the cooking appliance. For example, if there is an error in the boiling point, the cooking ingredients may be undercooked.

[0014] To address the above problems, the present application provides a temperature detection method, apparatus, cooking appliance, and storage medium applicable to a cooking appliance provided with a fan structure, a cooking chamber structure, and a lid structure for closing the cooking chamber structure. The method includes steps of obtaining a detected temperature of the lid structure, controlling an operating state of the fan structure based on a predetermined detection period, and determining a target temperature of the cooking chamber structure based on a change situation of the detected temperature.

[0015] Thereby, by controlling the operating state of the fan structure to adjust the detected temperature, a target temperature for reflecting the temperature situation of the cooking chamber structure based on the change situation of the detected temperature can be determined quickly and accurately.

[0016] Hereinafter, the application environment of the temperature detection method provided in the embodiments of the present invention will be introduced.

[0017] Referring to FIG. 1, FIG. 1 shows a schematic structural view of a cooking appliance according to an embodiment of the present application. As shown in FIG. 1, the cooking appliance 100 includes a cooking chamber structure 110, a lid structure 120, and a fan structure 130.

[0018] Here, the cooking appliance 100 may be, but is not limited to, a rice cooker, a steamer, a pressure cooker, a steam rice cooker, etc.

[0019] The cooking chamber structure 110 includes a cooking chamber body 111 and an inner pot 112 installed in the cooking chamber body 111. The inner pot 112 is used to accommodate food that needs to be cooked, and the inner pot 112 is removably installed in the cooking chamber body 111. A heating unit (not shown) for heating the inner pot 112 can be installed in the cooking chamber structure 110.

[0020] In some embodiments, the lid structure 120 is used to close the cooking chamber structure 110.

[0021] In some embodiments, the fan structure 130 is installed on the lid structure 120. In another embodiment, the fan structure 130 may be installed on the cooking chamber structure 110, specifically, it can be installed according to actual usage requirements, and the present application does not limit this. By changing the operating state of the fan structure 130, the temperature change situation of the cooking chamber structure 110 can be adjusted.

[0022] In some embodiments, the fan structure 130 includes a fan 131 and an air duct 132 connected to the fan 131. The fan 131 can generate gas during operation. The fan 131 can supply air or exhaust air to the cooking chamber structure 110 through the air duct 132 by rotating in different directions. For example, when the fan 131 rotates forward, a gas flow in the direction from the fan 131 to the cooking chamber structure 110 is generated, thereby realizing air supply to the cooking chamber structure 110. When the fan 131 rotates reversely, a gas flow in the direction from the cooking chamber structure 110 to the fan 131 is generated, thereby realizing exhaust from the cooking chamber structure 110.

[0023] When the fan structure 130 supplies air to the cooking chamber structure 110, external gas is blown into the cooking chamber structure 110. Since the external gas temperature is usually lower than the temperature inside the cooking chamber structure 110, the temperature field inside the cooking chamber structure 110 is changed. When the fan structure 130 stops supplying air to the cooking chamber structure 110, the influence on the temperature field inside the cooking chamber structure 110 stops, and the temperature field inside the cooking chamber structure 110 quickly returns to its original state.

[0024] In some embodiments, the fan structure 130 further includes a switch unit 133. In some embodiments, the cooking device 100 further includes a control module 140. In some embodiments, the control module 140 may be installed on the lid structure 120. The control module 140 can generate a control signal and control the operating states of the switch unit 133 and the fan 131.

[0025] For example, the control module 140 can control the on and off of the fan 131, and further control the rotation speed of the fan 131, thereby changing the air volume generated. In addition, the control module 140 can further control the opening and closing of the switch unit 133 to control the communication and disconnection of the passage between the fan 131 and the air duct 132. When the switch unit 133 opens, the passage between the fan 131 and the air duct 132 communicates, and the gas generated by the fan 131 can flow through the air duct 132 and flow into the cooking chamber structure 110. When the switch unit 133 closes, the passage between the fan 131 and the air duct 132 is disconnected, and the gas generated by the fan 131 cannot pass through the air duct 132.

[0026] Optionally, the switch unit 133 may use a solenoid valve.

[0027] In some embodiments, the cooking device 100 can include a temperature detection module 150.

[0028] Optionally, the temperature detection module 150 can include a first temperature detection unit 151 used to detect the temperature of the lid structure 120 and transmit the detected temperature data to the control module 140.

[0029] In some embodiments, the first temperature detection unit 151 may be installed in a detection area close to the vicinity of the air outlet of the fan structure 130 of the lid structure 120. When the operating state of the fan structure 130 changes, the temperature change in the detection area is the fastest, and the first temperature detection unit 151 can quickly detect the temperature change situation caused by the change of the operating state of the fan structure 130, and the detection sensitivity is higher.

[0030] Optionally, the temperature detection module 150 can further include a second temperature detection unit 152. The second temperature detection unit 152 is used to detect the temperature of the cooking chamber structure 110 and transmit the detected temperature data to the control module 140 so that the control module 140 can control it based on the detected temperature.

[0031] For example, the control module 140 can adjust the heating power of the cooking appliance 100 based on the detected temperature.

[0032] The control module 140 can use an MCU (Microcontroller Unit), an MPU (Microprocessor Unit), a CPU (Central Processing Unit), etc.

[0033] The control signal can be a PPG (Programmable Pulse Generator) signal, a PWM (Pulse Width Modulation) signal, etc., and specifically can be selected according to actual usage requirements, and the present application does not limit this.

[0034] Referring to FIG. 2, FIG. 2 shows a schematic diagram of a temperature detection flowchart provided in an embodiment of the present application, and can be applied to a cooking appliance having the above fan structure, lid structure, and cooking chamber structure. As shown in FIG. 2, the method can include steps 210 to 230.

[0035] In step 210, the detected temperature of the lid structure is obtained.

[0036] When it is detected that the cooking appliance starts cooking, an initialization process is performed on the relevant parameters of the cooking appliance.

[0037] When the cooking appliance is cooking, the temperature inside the cooking chamber structure changes, thereby affecting the temperature change of the lid structure. By detecting the temperature of the lid structure, it can be used to determine the temperature of the subsequent cooking chamber structure. Let the detected temperature of the lid structure be the detected temperature.

[0038] In some embodiments, when the cooking appliance is cooking, the cooking appliance can be heated using a first power, and when the detected temperature reaches a heating temperature threshold, the cooking appliance is heated using a second power. Here, the first power is greater than the second power. When the cooking appliance is cooking, in order to quickly reach the detected temperature within a predetermined temperature range, the cooking appliance can first be heated with the larger first power. To prevent the rising speed of the detected temperature from being too fast, for example, when the detected temperature rapidly reaches the predetermined temperature range but the detection and adjustment control cannot keep up, when the detected temperature reaches a certain temperature (i.e., the above heating temperature threshold), the cooking appliance is heated by changing to a second power smaller than the first power, thereby slowing down the temperature rising speed of the cooking appliance and enabling timely and accurate adjustment control based on the detected temperature.

[0039] Exemplarily, the value of the first power may be 1350W, the value of the second power may be 800W, and the heating temperature threshold may be 90 degrees Celsius. That is, when it is detected that the cooking appliance starts cooking, after performing an initialization process on the relevant parameters of the cooking appliance, the cooking appliance is heated using the full power of 1350W. When the detected temperature becomes equal to 90 degrees Celsius, the cooking appliance is heated using the full power of 800W.

[0040] In the embodiments of the present application, the temperature of the lid structure can be obtained as the detected temperature by a temperature sensor installed on the lid structure.

[0041] In step 220, the operating state of the fan structure is controlled based on a predetermined detection period.

[0042] In the embodiments of the present application, the detection temperature of the lid structure can be obtained by detecting in a predetermined detection period, and a preferable value of the predetermined detection period may be 15 seconds.

[0043] In some embodiments, the operating states of the fan structure include on and off. When the operating state of the fan structure is on, the fan structure blows external gas into the cooking chamber structure. Since the temperature of the external gas is lower than the temperature inside the cooking chamber structure, the temperature field inside the cooking chamber structure can thereby be changed. When the operating state of the fan structure is off, the fan structure stops blowing air into the cooking chamber structure, thereby stopping the influence on the temperature field inside the cooking chamber structure. By controlling the operating state of the fan structure, the internal temperature difference of the cooking chamber structure can be adjusted, and a temperature difference is generated in the cooking chamber structure (when the fan is on, the temperature of the cooking chamber structure decreases, and when the fan is off, the temperature of the cooking chamber structure increases). When the fan is off, the speed of temperature recovery is related to the current temperature of the cooking chamber structure (for example, related to the amount of steam generation inside the cooking chamber structure). Therefore, the temperature of the cooking chamber structure can be determined based on the change situation of the detection temperature when the fan is off. Specifically, it will be described in subsequent embodiments.

[0044] In the embodiments of the present application, for each predetermined detection period, the fan structure is controlled to be turned on based on a first duty ratio, and the fan structure is controlled to be turned off based on a second duty ratio. For example, when one predetermined detection period is 15 seconds, the first duty ratio is two-thirds, and the second duty ratio is one-third, within one predetermined detection period (15 seconds), the time for turning on the fan structure is 10 s, and the time for turning off the fan structure is 5 seconds.

[0045] As can be understood, the values of the first duty ratio and the second duty ratio can be selected according to actual requirements. The larger the first duty ratio, the smaller the second duty ratio, and the greater the impact on the temperature difference of the cooking chamber structure within a predetermined detection period. As can be understood, the larger the temperature difference, the more significant the temperature rise will be when detected later, and the easier it is to make a judgment.

[0046] As shown in FIG. 3, FIG. 3 shows a schematic diagram of the change of the detection temperature Tn with the operating state of the fan structure provided in the embodiment of the present application. As can be seen from FIG. 3, within a predetermined detection period T, at t0 - t1, the fan structure is in the on state, and the fan structure supplies air to the cooking chamber structure, and the gas with a low external temperature affects the temperature field inside the cooking chamber structure, so that the detection temperature Tn gradually decreases. At t1 - t2, the fan structure is in the off state, and the fan structure stops supplying air to the cooking chamber structure, and the temperature field in the cooking chamber structure gradually recovers to the original state, and the detection temperature Tn gradually increases.

[0047] In some embodiments, the control curve of the operating state of the fan structure may be a square wave curve, a sine curve, etc., and specifically can be selected according to actual requirements, and the present application does not determine this.

[0048] In step 230, the target temperature of the cooking chamber structure is determined based on the change situation of the detection temperature.

[0049] Corresponding to the determination of different target temperatures, the corresponding change situations of the detection temperature are different, and thereby the target temperature of the cooking chamber structure can be determined based on the change situation of the detection temperature.

[0050] The determination method for determining the target temperature of the cooking chamber structure based on the change situation of the detected temperature may be various. In some embodiments, when the fan structure is on, the temperature of the cooking chamber structure decreases, and when the fan structure is off, the temperature of the cooking chamber structure recovers. Different target temperatures of the cooking chamber structure correspond to different recovery situations of the detected temperature. Therefore, the target temperature of the cooking chamber structure can be determined based on the recovery situation of the detected temperature.

[0051] In some embodiments, step 230 may include the following steps.

[0052] (1) Determine the temperature recovery parameter of the cooking chamber structure based on the change situation of the detected temperature.

[0053] (2) Determine the target temperature of the cooking chamber structure based on the temperature recovery parameter and a predetermined mapping relationship.

[0054] Here, the temperature recovery parameter may be the recovery rate of the detected temperature. Specifically, in each predetermined detection period, when the fan structure is in the off state, the maximum value and the minimum value of the detected temperature can be obtained. Further, based on the first detection time corresponding to the maximum value and the second detection time corresponding to the minimum value, the recovery rate of the detected temperature is determined.

[0055] For example, in the first predetermined detection period, if the first detection time corresponding to the maximum value A1 is a1 and the detection time corresponding to the minimum value A2 is a2, the recovery rate v of the detected temperature in the first predetermined detection period is v = (A1 - A2) / (a1 - a2).

[0056] As can be understood, experimental detection can be performed in advance on the temperature recovery parameters corresponding to different target temperatures to obtain a predetermined temperature mapping relationship between different target temperatures and temperature recovery parameters.

[0057] In some embodiments, a predetermined mapping relationship corresponding to different target temperatures, temperature recovery parameters, influencing factors such as the weight of the food, the type of the food, etc. can be further set, whereby the target temperature can be determined more accurately.

[0058] As can be understood, the target temperature may be a temperature corresponding to the boiling point. The target temperature may be a certain temperature during the cooking of the cooking device. For example, the target temperature may be the temperature of the cooking chamber structure at the end of the water absorption stage of the cooking device.

[0059] In another embodiment, when the target temperature is the boiling temperature, in order to reduce the waste of detection resources and improve the detection efficiency, only when the detection temperature is within a predetermined temperature range, in each of the predetermined detection cycles, the step of controlling the fan structure to be turned on based on a first duty ratio and controlling the fan structure to be turned off based on a second duty ratio is executed. That is, only when the detection temperature is within a predetermined temperature range, the operating state of the fan structure is adjusted.

[0060] In some embodiments, the specific value of the predetermined temperature range is related to factors such as the altitude where the cooking device is located. For example, when the altitude where the cooking device is located is between 0 and 2000 meters, the predetermined temperature range may be a value between 90 degrees Celsius and 98 degrees Celsius.

[0061] It should be noted that the higher the altitude suitable for the predetermined temperature range, the smaller the value of the lowest temperature of the predetermined temperature range.

[0062] In still another embodiment, when the target temperature is the boiling temperature, the target temperature of the cooking chamber structure can be determined in the following embodiment. Step 230 can specifically include the following steps.

[0063] (1) In each predetermined detection cycle, and when the fan structure is in the off state, obtain the maximum value and the minimum value of the detection temperature.

[0064] (2) When the temperature difference value between the maximum value and the minimum value is greater than a predetermined temperature threshold, determine the target temperature based on the maximum value.

[0065] In each predetermined detection period, when the fan structure is in the off state, the fan structure stops affecting the temperature field inside the cooking chamber structure, and the detected temperature inside the cooking chamber structure shows an upward trend. Identify the maximum value and the minimum value of the detected temperature during this upward process.

[0066] Based on the maximum value and the minimum value of the detected temperature in each predetermined detection period, identify the temperature difference value between the maximum value and the minimum value of the detected temperature. For example, when the maximum value of the detected temperature is Tmax and the minimum value of the detected temperature is Tmin, the temperature difference value between the maximum value and the minimum value of the detected temperature is Tmax - Tmin.

[0067] If the temperature difference value (Tmax - Tmin) is greater than the predetermined temperature threshold, it indicates that the cooking device has reached the boiling state. In the boiling state, the temperature will not rise further. Therefore, determine the measured maximum temperature, that is, the maximum value of the detected temperature, as the target temperature. That is, the maximum value Tmax of the detected temperature can be determined as the temperature corresponding to the boiling point. If the temperature difference value (Tmax - Tmin) is less than or equal to the predetermined temperature threshold, it indicates that the cooking device has not reached the boiling state.

[0068] Note that by adjusting the value of the predetermined temperature threshold, it is possible to predict in advance whether the cooking process of the cooking device is in the boiling state and the boiling point information of the cooking device. For example, if the value of the predetermined temperature threshold is decreased so that the condition that the temperature difference value between the maximum value and the minimum value of the detected temperature is greater than the predetermined temperature threshold is satisfied more quickly, it can be specified in advance just before the target temperature of the cooking chamber structure reaches the boiling point temperature.

[0069] When determining the target temperature based on the fact that the temperature difference value between the maximum value and the minimum value of the detected temperature is greater than a predetermined temperature threshold, there may be a situation where the target temperature is inaccurate due to the influence of factors such as the fan structure. For example, when the wind force of the fan structure is unstable or damage occurs to the fan structure during a predetermined detection period, a large deviation will occur in the determination of the target temperature. To solve the above problems, in another embodiment, if the temperature difference value between the maximum value and the minimum value is greater than the predetermined temperature threshold, the step of determining the target temperature based on the maximum value may specifically include the following steps.

[0070] (1) If the temperature difference value between the maximum value and the minimum value is greater than the predetermined temperature threshold and the temperature increase value in a continuous predetermined number of predetermined detection periods is less than the predetermined increase threshold, then use the largest maximum value as the target temperature.

[0071] In the embodiments of the present application, the temperature increase value in each predetermined detection period is the difference between the maximum value of the detected temperature in the current predetermined detection period and the maximum value of the detected temperature in the previous predetermined detection period.

[0072] Exemplarily, the predetermined number is 2, and the maximum values of the detected temperatures in the continuous first predetermined detection period, the second predetermined detection period, and the third predetermined detection period, for example, Tmax1, Tmax2, and Tmax3, are obtained respectively.

[0073] If the difference between Tmax2 and Tmax1 is less than the predetermined increase threshold and the difference between Tmax3 and Tmax2 is less than the predetermined increase threshold, then there is a situation where the temperature increase values in two predetermined detection periods (the second detection period and the third detection period) are less than the predetermined increase threshold. That is, in this case, since the temperature change tends to be stable (in the boiling state, even if heating continues, the temperature changes near the boiling point and does not continue to rise further), the largest value among Tmax1 and Tmax2 is determined as the target temperature.

[0074] Preferably, the predetermined number is three, that is, if the temperature difference value between the maximum value and the minimum value is greater than a predetermined temperature threshold value, and the temperature increase value in three consecutive predetermined detection periods is less than a predetermined increase threshold value, then the maximum maximum value is set as the target temperature.

[0075] By increasing the predetermined detection period to determine the target temperature, it is possible to effectively reduce the error of the target temperature caused by the different wind forces for each predetermined detection period of the fan structure, and it is possible to effectively reduce the error of the target temperature caused by the occurrence of damage to the fan structure in the predetermined detection period.

[0076] In yet another embodiment, when the target temperature is the boiling temperature, since the increase in the boiling temperature is small or does not change during boiling, based on the situation of the maximum value of the detected temperature in several consecutive predetermined detection periods, it is possible to directly determine whether the cooking chamber structure is in a boiling state, and thereby determine the target temperature. Specifically, the target temperature of the cooking chamber structure can be determined in the following embodiments. Step 230 can specifically include the following steps.

[0077] (1) In each predetermined detection period, and when the fan structure is in the off state, obtain the maximum value and the minimum value of the detected temperature.

[0078] (2) If the temperature increase value in a predetermined number of consecutive predetermined detection periods is less than a predetermined increase threshold value, then set the maximum maximum value in the predetermined number of predetermined detection periods as the target temperature.

[0079] Here, the temperature increase value of each predetermined detection period is the difference between the maximum value of the detected temperature in the current predetermined detection period and the maximum value of the detected temperature in the previous predetermined detection period.

[0080] For the same content, reference can be made to the description of the above embodiments, and the description is omitted here.

[0081] In some embodiments, when used to detect the boiling point temperature of a cooking appliance, the detected target temperature can be compared with a predetermined critical temperature. If the target temperature is lower than the predetermined critical temperature, it can be determined that the cooking appliance is in a high altitude cooking state.

[0082] Here, the predetermined critical temperature is within a predetermined temperature range. For example, the predetermined temperature range is from 90 degrees Celsius to 98 degrees Celsius, and the predetermined critical temperature is 94 degrees Celsius. If the target temperature determined by the above-mentioned predetermined detection conditions (the temperature difference value between the maximum value and the minimum value of the detected temperature is greater than a predetermined threshold value, or the temperature difference value between the maximum value and the minimum value of the detected temperature is greater than a predetermined temperature threshold value, and the temperature increase value in a continuous predetermined number of predetermined detection cycles is less than a predetermined increase threshold value) is less than 94 degrees Celsius, it is determined that the cooking appliance is in a high altitude cooking state.

[0083] In the high altitude cooking state, the boiling point temperature is low. At this time, by cooking based on the cooking parameters in the flat ground cooking state, it becomes difficult to boil the food ingredients, or it becomes difficult to obtain the desired cooking effect. Therefore, if it is determined that the cooking appliance is in the high altitude cooking state, the cooking parameters of the cooking appliance can be adjusted to improve the cooking effect.

[0084] For example, by combining with a fan structure, the cooking appliance can be made in a positive pressure state (that is, the intake air volume of the cooking chamber structure is greater than the exhaust air volume) during cooking, thereby increasing the boiling point temperature of the cooking appliance. For example, when it is determined that the cooking appliance is in a high pressure cooking state, the fan structure is turned on, and the fan blows air into the cooking chamber structure through the air duct. By adjusting the magnitude of the wind force of the fan, the amount of air blown into the cooking chamber structure is made greater than the amount of gas discharged by the cooking chamber structure through the steam valve, forming a positive micro-pressure state inside the cooking appliance, thereby improving the boiling point of the cooking ingredients.

[0085] Also, for example, in the high temperature cooking state, the cooking effect can be adjusted by increasing the heating time.

[0086] Due to the influence of factors such as fan failure, the change situation of the detected temperature cannot meet the predetermined detection conditions forever. Therefore, it is possible that the loop determination of whether the change situation of the detected temperature meets the predetermined detection conditions is continuously performed forever. Therefore, the temperature detection method provided in the embodiments of the present application further sets an end condition for the loop determination, that is, when the end condition is not met, the determination of whether the change situation of the detected temperature meets the predetermined detection conditions is continuously performed, and when the end condition is met, the loop determination is exited.

[0087] In some embodiments, the end condition of the loop determination may be whether the temperature detection time times out, and the temperature detection time is the total time for performing temperature detection on the lid structure.

[0088] Specifically, if the temperature detection time is less than or equal to a predetermined time threshold and the change situation of the detected temperature meets the predetermined detection conditions, the target temperature of the cooking chamber structure is determined based on the change situation of the detected temperature.

[0089] In the embodiments of the present application, if the temperature detection time is less than or equal to a predetermined time threshold and the change situation of the detected temperature meets the predetermined detection conditions (the temperature difference value between the maximum value and the minimum value is greater than a predetermined temperature threshold, or the temperature difference value between the maximum value and the minimum value is greater than a predetermined temperature threshold and the temperature increase value of a predetermined number of consecutive predetermined detection cycles is less than a predetermined increase threshold), the target temperature of the cooking chamber structure is determined based on the change situation of the detected temperature.

[0090] In some embodiments, if the temperature detection time is greater than a predetermined time threshold or the detected temperature is greater than the maximum value of a predetermined temperature range, the maximum value of the predetermined temperature range is used as the target temperature.

[0091] Exemplarily, the predetermined temperature range is from 90 degrees Celsius to 98 degrees Celsius. If the temperature detection time is greater than a predetermined time threshold or the detected temperature is greater than 98 degrees Celsius, 98 degrees Celsius is determined as the target temperature.

[0092] Here, the setting of the predetermined time threshold can be set according to actual usage requirements. For example, a mapping relationship between influencing factors such as the weight and type of food and the predetermined time threshold can be set in advance. During actual use, the predetermined time threshold can be determined based on the weight, type of food in the cooking chamber structure, and the predetermined time mapping relationship.

[0093] Hereinafter, the temperature detection method provided in the present application will be described in detail with a specific embodiment. Referring to FIG. 4, FIG. 4 shows a schematic diagram of a flowchart of another temperature detection method provided in the embodiment of the present application, and the method includes steps 301 to step 313.

[0094] In step 301, cooking is started and the cooking device is initialized.

[0095] When it is detected that the cooking device starts cooking, the relevant parameters of the cooking device are initialized.

[0096] In step 302, the cooking device is heated with the first power.

[0097] After initializing the relevant parameters of the cooking device, the cooking device is heated with the first power. Here, the value of the first power may be 1350W.

[0098] In step 303, the detected temperature is obtained.

[0099] The temperature value obtained by detecting the temperature of the lid structure is used as the detected temperature.

[0100] In step 304, it is determined whether the detected temperature is equal to the heating temperature threshold.

[0101] If the detected temperature is equal to the heating temperature threshold, step 305 is executed; otherwise, the process returns to step 303 for execution. Here, the value of the heating temperature threshold may be 90°C.

[0102] In step 305, if the detected temperature is equal to the heating temperature threshold, the cooking device is heated with the second power.

[0103] Here, the value of the second power may be 800W.

[0104] In step 306, it is determined whether the detected temperature is within a predetermined temperature range. If the detected temperature is within the predetermined temperature range, step 307 is executed; otherwise, step 305 is executed. Here, the value of the predetermined temperature range may be 90 to 98°C.

[0105] In step 307, if the detected temperature is within the predetermined temperature range, in each predetermined detection period, the fan structure is turned on based on the first duty ratio and turned off based on the second duty ratio.

[0106] In step 308, the maximum value and the minimum value of the detected temperature when the fan structure is in the off state are obtained.

[0107] In each predetermined detection period, the maximum value and the minimum value of the detected temperature when the fan structure is in the off state are determined.

[0108] In step 309, it is determined whether the temperature difference value between the maximum value and the minimum value is greater than a predetermined temperature threshold.

[0109] If the temperature difference value between the maximum value and the minimum value is greater than the predetermined temperature threshold, step 310 is executed.

[0110] In step 310, it is determined whether the temperature increase values in three consecutive predetermined detection periods are smaller than a predetermined increase threshold.

[0111] If the temperature increase values in all three consecutive predetermined detection periods are smaller than the predetermined increase threshold, step 311 is executed.

[0112] In step 311, the maximum maximum value is set as the target temperature.

[0113] When it is determined that the temperature difference value between the maximum value and the minimum value is greater than a predetermined temperature threshold value and the temperature increase value in three consecutive predetermined detection cycles is less than a predetermined increase threshold value, the maximum maximum value is set as the target temperature.

[0114] In step 312, it is determined whether the temperature detection time is greater than a predetermined time threshold value or whether the detected temperature is greater than the maximum value of a predetermined temperature range.

[0115] When it is determined that the temperature detection time is greater than a predetermined time threshold value or the detected temperature is greater than the maximum value of a predetermined temperature range, step 313 is executed.

[0116] In step 313, the maximum value of the predetermined temperature range is set as the target temperature.

[0117] Referring to FIG. 5, FIG. 5 shows a schematic structural diagram of a temperature detection device 400 provided in an embodiment of the present application, which is applied to a cooking device in which a fan structure, a lid structure, and a cooking chamber structure are installed. The lid structure is used to close the cooking chamber structure, the fan structure is installed on the lid structure, and the temperature detection device 400 includes an acquisition module 410, a control module 420, and a determination module 430. Specifically, it is as follows.

[0118] The acquisition module 410 is used to acquire the detected temperature of the lid structure.

[0119] The control module 420 is used to control the operating state of the fan structure based on a predetermined detection cycle.

[0120] In some embodiments, the control module 420 In each predetermined detection cycle, it is further used to include a first control sub-module for controlling the fan structure to turn on based on a first duty ratio and controlling the fan structure to turn off based on a second duty ratio.

[0121] In some embodiments, the control module 420 A first acquisition sub-module used to obtain the maximum and minimum values of the detected temperature at each predetermined detection period and when the fan structure is in the off state; And a first determination sub-module used to determine a target temperature based on the maximum value if the temperature difference value between the maximum value and the minimum value is greater than a predetermined temperature threshold.

[0122] In some embodiments, the first determination sub-module Is a determination unit used to set the maximum maximum value as the target temperature if the temperature difference value between the maximum value and the minimum value is greater than a predetermined temperature threshold and the temperature increase value in a predetermined number of consecutive predetermined detection periods is less than a predetermined increase threshold. The temperature increase value in each predetermined detection period is the difference between the maximum value of the detected temperature in the current predetermined detection period and the maximum value of the detected temperature in the previous predetermined detection period. And a determination module 430 used to determine the target temperature of the cooking chamber structure based on the change situation of the detected temperature.

[0123] In some embodiments, the determination module 430 Includes a first determination sub-module used to determine a temperature recovery parameter of the cooking chamber structure based on the change situation of the detected temperature, And a second determination sub-module used to determine the target temperature of the cooking chamber structure based on the temperature recovery parameter and a predetermined temperature mapping relationship. Here, the predetermined temperature mapping relationship characterizes a predetermined mapping relationship between the target temperature and the temperature recovery parameter. Here, the predetermined temperature mapping relationship characterizes a predetermined mapping relationship between the target temperature and the temperature recovery parameter.

[0124] In some embodiments, the determination module 430 Includes a second control sub-module used to control the fan structure to turn on based on a first duty ratio at each predetermined detection period if the detected temperature is within a predetermined temperature range, And a third control sub-module used to control the fan structure to turn off based on a second duty ratio.

[0125] In some embodiments, the determination module 430 In each predetermined detection period and when the fan structure is in the off state, a first acquisition sub-module used to acquire the maximum value and the minimum value of the detected temperature, If the temperature difference value between the maximum value and the minimum value is greater than a predetermined temperature threshold, a third determination sub-module used to determine the target temperature based on the maximum value.

[0126] In some embodiments, the first determination sub-module If the temperature difference value between the maximum value and the minimum value is greater than a predetermined threshold, further includes a fourth determination sub-module used to set the maximum value as the target temperature.

[0127] In some embodiments, the fourth determination sub-module If the temperature difference value between the maximum value and the minimum value is greater than a predetermined temperature threshold and the temperature increase value of a predetermined number of consecutive predetermined detection periods is less than a predetermined increase threshold, further includes a determination unit used to set the maximum maximum value as the target temperature. The temperature increase value of each predetermined detection period is the difference between the maximum value of the detected temperature in the current predetermined detection period and the maximum value of the detected temperature in the previous predetermined detection period.

[0128] In some embodiments, the determination module 430 In each predetermined detection period and when the fan structure is in the off state, a second acquisition sub-module used to acquire the maximum value and the minimum value of the detected temperature, If the temperature increase value of a predetermined number of consecutive predetermined detection periods is less than a predetermined increase threshold, a fifth determination sub-module used to set the maximum maximum value in the predetermined number of predetermined detection periods as the target temperature. The temperature increase value of each predetermined detection period is the difference between the maximum value of the detected temperature in the current predetermined detection period and the maximum value of the detected temperature in the previous predetermined detection period. If the temperature detection time is less than or equal to a predetermined time threshold and the change situation of the detected temperature satisfies a predetermined detection condition, a sixth determination sub-module used to determine the target temperature of the cooking chamber structure based on the change situation of the detected temperature; If the temperature detection time is greater than the predetermined time threshold or the detected temperature is greater than the maximum value of the predetermined temperature range, a seventh determination sub-module used to set the maximum value of the predetermined temperature range as the target temperature. It further includes.

[0129] As will be apparent to those skilled in the art, for the sake of convenience and brevity of description, the specific operation processes of the above devices and modules can refer to the corresponding processes in the embodiments of the method, and the description is omitted here.

[0130] In some embodiments provided in the present application, the coupling or direct coupling or communication connection between the explicitly stated modules or the discussed modules may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

[0131] Also, each functional module in each embodiment of the present application may be integrated into one processing module, each module may physically exist alone, or two or more modules may be integrated into one module. The above integrated module may be realized in the form of hardware or in the form of a software function module.

[0132] Referring to FIG. 6, FIG. 6 is a schematic structural diagram of a cooking device 500 provided in an embodiment of the present application. The cooking device 500 in the present application may include one or more of the following members, namely a processor 510, a memory 520, and one or more application programs. Here, the one or more application programs are stored in the memory 520 and configured to be executed by one or more processors 510, and the one or more programs are configured to be used to execute the cooking control method described in the embodiments of the method.

[0133] The processor 510 can include one or more processor cores. The processor 510 connects each part within the entire cooking device 500 with various interfaces and circuits, operates or executes instructions, programs, code sets or instruction sets stored in the memory 520, and calls the data stored in the memory 520, thereby executing various functions and processing data of the cooking device 500. Optionally, the processor 510 can be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), or programmable logic array (PLA). The processor 510 can integrate one or a combination of multiple types such as a central processing unit (CPU), a graphics processing unit (GPU), and a modem. Here, the CPU mainly processes the operating system, user interface, application programs, etc., the GPU is used to be responsible for rendering and drawing the display content, and the modem is used to process wireless communication. As can be understood, the above modem is not integrated into the processor 510 and can be realized independently with a single communication chip.

[0134] The memory 520 may include a Random Access Memory (RAM) and may also include a Read-Only Memory. The memory 520 can be used to store instructions, programs, codes, code sets, or instruction sets. The memory 520 can include a program storage area and a data storage area. Here, the program storage area can store instructions for implementing an operating system, instructions for implementing at least one function, instructions for implementing embodiments of the following various methods, etc. The data storage area can also store data created during the use of the cooking device 500.

[0135] Referring to FIG. 7, FIG. 7 shows a schematic structural diagram of a computer-readable storage medium provided in an embodiment of the present application. In the computer-readable storage medium 600, program code 610 that can be called by a processor to execute the cooking control method described in the embodiment of the above method is stored.

[0136] The computer-readable storage medium 600 may be, for example, an electronic memory such as a flash memory, an EEPROM (Electrically Erasable Programmable Read-Only Memory), an EPROM, a hard disk, or a ROM. Optionally, the computer-readable storage medium 600 includes a non-transitory computer-readable storage medium. The computer-readable storage medium 600 has a storage space for executing the program code 610 of every method step in the above method. These program codes are read from one or more computer program devices or written to these one or more computer program devices. The program code 610 may be compressed in a suitable format, for example.

[0137] Finally, the above embodiments are merely for explaining the technical solution of the present application and do not limit it. Although the present application has been described in detail with reference to the above embodiments, as those skilled in the art will understand, the technical solutions described in each of the above embodiments can be further modified, or some of their technical features can be equivalently replaced, but these modifications or replacements do not deviate from the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of each embodiment of the present application.

Claims

1. A cooking appliance including a cooking chamber structure, a fan structure for blowing external gas into the cooking chamber structure, and a lid structure for closing the cooking chamber structure, obtaining a detected temperature of the lid structure; controlling an operating state of the fan structure based on a predetermined detection period; determining a target temperature of the cooking chamber structure based on a change in the detected temperature.

2. The step of controlling the operating state of the fan structure based on a predetermined detection period includes:

2. The temperature detection method according to claim 1, further comprising: controlling the fan structure to be turned on based on a first duty ratio and controlling the fan structure to be turned off based on a second duty ratio in each of the predetermined detection periods.

3. determining a target temperature of the cooking chamber structure based on the change in the detected temperature, determining a temperature recovery parameter of the cooking chamber structure based on the change in the detected temperature; determining a target temperature for the cooking chamber configuration based on the temperature recovery parameters and a predetermined temperature mapping relationship; 3. The temperature detection method according to claim 1, wherein the predetermined temperature mapping relationship represents a predetermined mapping relationship between the target temperature and the temperature recovery parameter.

4. The step of controlling the fan structure to be turned on based on a first duty ratio and controlling the fan structure to be turned off based on a second duty ratio in each of the predetermined detection periods includes:

3. The temperature detection method according to claim 2, further comprising the step of controlling the fan structure to be turned on based on a first duty ratio and controlling the fan structure to be turned off based on a second duty ratio in each of the predetermined detection periods if the detected temperature is within a predetermined temperature range.

5. determining a target temperature of the cooking chamber structure based on the change in the detected temperature, obtaining maximum and minimum values ​​of the detected temperature during each predetermined detection period and when the fan structure is in an off state; 3. The temperature detection method according to claim 2, further comprising the step of: determining a target temperature based on the maximum value if a temperature difference between the maximum value and the minimum value is greater than a predetermined temperature threshold value.

6. If the temperature difference between the maximum value and the minimum value is greater than a predetermined temperature threshold, the step of determining a target temperature based on the maximum value includes: a step of setting the maximum temperature as a target temperature if a temperature difference value between the maximum temperature value and the minimum temperature value is greater than a predetermined temperature threshold value and a temperature rise value in a predetermined number of consecutive detection periods is less than a predetermined rise threshold value; 6. The temperature detection method according to claim 5, wherein the temperature rise value for each predetermined detection period is a difference between a maximum value of the detection temperature in a current predetermined detection period and a maximum value of the detection temperature in a previous predetermined detection period.

7. determining a target temperature of the cooking chamber structure based on the change in the detected temperature, obtaining maximum and minimum values ​​of the detected temperature during each predetermined detection period and when the fan structure is in an off state; If the temperature rise value in a predetermined number of consecutive predetermined detection cycles is smaller than a predetermined rise threshold, the maximum value in the predetermined number of consecutive predetermined detection cycles is set as the target temperature, 3. The temperature detection method according to claim 2, wherein the temperature rise value for each predetermined detection period is a difference between a maximum detected temperature value for a current predetermined detection period and a maximum detected temperature value for a previous predetermined detection period.

8. 8. The temperature detection method of claim 4, further comprising the step of determining that the cooking appliance is in a high altitude cooking state if the target temperature is lower than a predetermined critical temperature, the predetermined critical temperature being within a predetermined temperature range.

9. determining a target temperature of the cooking chamber structure based on the change in the detected temperature, if the temperature detection time is equal to or less than a predetermined time threshold, determining a target temperature of the cooking chamber structure based on a change in the detected temperature; The temperature detection method according to any one of claims 4 to 7, further comprising a step of setting the maximum value of the predetermined temperature range as a target temperature if the temperature detection time is greater than the predetermined time threshold or if the detected temperature is greater than the maximum value of a predetermined temperature range.

10. A cooking appliance including a cooking chamber structure, a fan structure for blowing external gas into the cooking chamber structure, and a lid structure for closing the cooking chamber structure, an acquisition module for acquiring a detected temperature of the lid structure; a control module for controlling an operating state of the fan structure based on a predetermined detection period; and a determining module for determining a target temperature of the cooking chamber structure based on a change in the detected temperature.

11. one or more processors; Memory, and one or more application programs stored in the memory and configured to cause the one or more processors to execute the temperature detection method of claim 1.

12. 13. A computer readable storage medium having stored thereon a program code for executing the temperature detection method of claim 1 when called by a processor.

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