Cooking device

Abstract

The cooking device comprises a heating device used for heating a cooking cavity and a temperature detection device arranged in the cooking cavity and used for detecting the position of the cooking cavity, the heating device comprises a plurality of heating pipes, the heating pipes are arranged on one of the back, the top and the bottom of an inner container or the combination position of the back, the top and the bottom of the inner container, and a center temperature estimation model is stored in a controller. During mode switching, recording time after mode switching, and defining the time as first time; the first temperature detected by a temperature detection device, the opening time of a box door and the power-on time of each heating pipe are obtained; inputting the first time, the first temperature, the opening time of the box door and the power-on time of each heating pipe into a center temperature estimation model, and outputting a predicted center temperature; and the working state of each heating pipe is adjusted based on the set temperature value according to the preset center temperature. The influence of the working states of different heating pipes on the center temperature is considered, the prediction precision is effectively improved, the temperature fluctuation is reduced, and the user experience is improved.

Description

Technical Field

[0001] The invention relates to the field of kitchen equipment, and in particular to a cooking device. Background Art

[0002] The cooking device may include a box body, an inner pot and a heating device. A cooking cavity is arranged in the inner pot. The heating device is arranged in the inner pot to heat the air in the inner pot. Food to be cooked is placed in the cooking cavity to cook the food.

[0003] The cooking method of existing cooking devices is mainly to set a certain temperature. When the cooking device reaches the temperature, the cooking device will maintain a stable temperature and radiate heat to the food in the cooking device through high temperature to transfer energy and cook the food. However, the temperature obtained by the temperature sensor in the cooking device is the temperature of a certain part of the cooking cavity, which is different from the temperature at the center of the cavity of the cooking device. The temperature at the center of the cavity is lower than the temperature obtained by the temperature sensor, so the temperature of the food does not reach the temperature obtained by the temperature sensor. There is a temperature error, which may cause the food to fail to meet the cooking requirements due to insufficient temperature.

[0004] In the related art, a linear function is used to map the temperature sensor and the center point temperature. However, this method only considers a single factor, and in the case of mode switching, the estimation error is large, resulting in large fluctuations in the center temperature.

[0005] In view of this, this application is filed. Summary of the invention

[0006] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0007] To this end, according to an embodiment of the present disclosure, a cooking device is provided, comprising:

[0008] A box body, which is used to form the outer contour of the cooking device;

[0009] The inner pot is arranged in the box shell; a cooking cavity is formed in the inner pot; a cooking cavity opening is arranged at the front end of the cooking cavity,

[0010] A door for opening or closing the cooking chamber opening;

[0011] The heating device is arranged between the inner pot and the box body and is used to heat the cooking cavity; the heating device includes:

[0012] A plurality of heating tubes, the heating tubes are arranged at one of the back, top, bottom or a combination of positions of the inner container;

[0013] A temperature detection device is disposed in the cooking cavity and is used to detect the temperature at the location, which is defined as a first temperature;

[0014] A controller is electrically connected to the heating device and the temperature detection device; a central temperature estimation model is stored in the controller, and the central temperature estimation model is trained based on historical operation data of the cooking device and corresponding central temperature data of the cooking cavity detected;

[0015] The controller is configured to: when performing mode switching, record the time after the mode switching and define it as the first time;

[0016] Obtaining a first temperature detected by a temperature detection device, an opening time of a chamber door, and a power-on time of each heating tube;

[0017] Input the first time, the first temperature, the opening time of the door, and the power-on time of each heating tube into the central temperature estimation model, and output the predicted central temperature;

[0018] And the working state of each heating tube is adjusted based on the set temperature value according to the preset central temperature.

[0019] By taking into account the working conditions of the heating tubes at different positions and the influence of the sealing of the cooking cavity on the center temperature, the accuracy of predicting the center temperature is improved, thereby reducing temperature fluctuations and improving the user experience.

[0020] According to an embodiment of the present disclosure, the discounted power-on time of each heating tube is obtained based on the first operation logic according to the power-on time of each heating tube and a preset discount factor.

[0021] Among them, the preset discount factor is related to the position of different heating tubes, so as to refer to the influence of different heating tubes on the center temperature and improve the accuracy of center temperature prediction.

[0022] According to an embodiment of the present disclosure, the predicted central temperature is output based on the central temperature estimation model according to the discounted power-on time of each heating tube, the first temperature, the opening time of the cabinet, and the first time.

[0023] According to an embodiment of the present disclosure, the controller is configured to obtain the first temperature detected by the temperature detection device during the cooking process, the discounted power-on time of the heating tube, the opening time of the oven door, the first time and the detected core temperature, and train a core temperature estimation model based on the above data.

[0024] The center temperature estimation model is trained using cooking devices of different models to adapt to the differences caused by the different installation positions of heating tubes in different models.

[0025] According to an embodiment of the present disclosure, the temperature detection device is arranged at the back of the inner container near the edge.

[0026] In some embodiments, the controller is configured to obtain the power-on time of each heating tube within the first preset time after cooking starts, with the first preset time as the calculation interval;

[0027] Obtain a first parameter based on the first sub-logic by using the power-on time of the first preset time and the preset depreciation factor;

[0028] The first parameter from the start of the cooking stage to the current moment is calculated, and the discounted power-on time of the corresponding heating tube is obtained by accumulating the first parameter.

[0029] By taking the first preset time as the calculation interval and obtaining the power-on time of each heating tube in the time period, the working condition of the heating tube can be monitored and recorded in real time, which helps to understand the actual workload of the heating tube and ensure that each heating tube can operate in the expected manner.

[0030] The power-on time of the first preset time and the preset depreciation factor are used to obtain the first parameter based on the first sub-logic. This step takes into account the influence of the workload and aging degree of the heating tube on the power-on time. By introducing the depreciation factor, the actual working state of the heating tube can be more accurately evaluated, thereby more accurately controlling the temperature change during the cooking process.

[0031] According to an embodiment of the present disclosure, the cooking device further includes:

[0032] The fan cavity is located in the inner tank;

[0033] An air inlet, used to connect the fan cavity and the cooking cavity;

[0034] An air outlet, used to connect the fan cavity and the cooking cavity;

[0035] A fan is disposed in the fan cavity so that the air in the cooking cavity flows into the fan cavity through the air inlet and then flows back to the cooking cavity through the air outlet;

[0036] The controller is configured to control the fan to run during the cooking process to accelerate the airflow velocity in the cooking cavity. By controlling the fan to run, the airflow in the cooking cavity is accelerated to improve the uniformity of the temperature of the entire cooking cavity.

[0037] According to an embodiment of the present disclosure, the cooking device further includes:

[0038] A door detection device, used to detect the opening angle of the door;

[0039] The controller is configured to obtain the first temperature detected by the temperature detection device during the cooking process, the discounted power-on time of the heating tube, the opening time of the oven door, the opening angle of the oven door, the first time and the detected center temperature, and train a center temperature estimation model based on the above data.

[0040] The core temperature estimation model trained based on the above data can more accurately predict the core temperature during the cooking process. By combining multiple influencing factors, the model can more finely simulate the temperature change trend during the actual cooking process, thereby providing a more accurate temperature estimation result.

[0041] The present disclosure also provides a cooking device, including:

[0042] A box body, which is used to form the outer contour of the cooking device;

[0043] The inner pot is arranged inside the box body and is used to form a cooking cavity; a cooking cavity opening is arranged at the front end of the cooking cavity;

[0044] A door for opening or closing the cooking chamber opening;

[0045] The heating device is arranged between the inner pot and the box body and is used to heat the cooking cavity; the heating device includes:

[0046] A plurality of heating tubes, the heating tubes are arranged at one of the back, top, bottom or a combination of positions of the inner container;

[0047] A temperature detection device is disposed in the cooking cavity and is used to detect the temperature at the location, which is defined as a first temperature;

[0048] A controller, the controller is electrically connected to the heating device and the temperature detection device, and a central temperature estimation model is stored in the controller, wherein the central temperature estimation model is trained based on historical operation data of the cooking device and corresponding central temperature data of the cooking cavity detected;

[0049] The controller is configured to, when the cooking device switches the mode, record the time after the mode is switched and define it as the first time;

[0050] Obtaining the power-on time of each heating tube of the cooking device, and calculating the discounted power-on time of each heating tube based on the first operation logic according to the power-on time of each heating tube;

[0051] According to the discounted power-on time of each heating tube, the first temperature detected by the temperature detection device in the cooking device, the opening time of the cooking device, and the first time, a pre-trained center temperature estimation model is input and the predicted center temperature is output.

[0052] By converting the power-on time into discounted power-on time and taking into account the heat dissipation and losses, the prediction accuracy of the model is improved.

[0053] According to an embodiment of the present disclosure, after cooking starts, the power-on time of each heating tube within the first preset time is obtained with the first preset time as the calculation interval;

[0054] Obtain a first parameter based on the first sub-logic by using the power-on time of the first preset time and the preset depreciation factor;

[0055] The first parameter from the start of the cooking stage to the current moment is calculated, and the discounted power-on time of the corresponding heating tube is obtained by accumulating the first parameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is a front view of a partial structure of a cooking device according to an embodiment of the present application;

[0057] Figure 2 is a side view of a partial structure of a cooking device according to an embodiment of the present application;

[0058] Figure 3 is a partial structural stereogram of a cooking device according to an embodiment of the present application;

[0059] Figure 4 is a front view of a partial structure of a cooking device according to an embodiment of the present application from another perspective;

[0060] Figure 5 is a partial structural cross-sectional view of a cooking device according to an embodiment of the present application;

[0061] Figure 6 is a partial structural diagram of a cooking device according to an embodiment of the present application from another perspective;

[0062] Figure 7 is a partial structural diagram of a cooking device according to an embodiment of the present application from another perspective;

[0063] Figure 8 is a partial structural diagram of a cooking device according to an embodiment of the present application from another perspective;

[0064] Fig. 9 is a partial structural diagram of a cooking device according to an embodiment of the present application from another perspective;

[0065] Fig.10 is a hardware configuration diagram of a cooking device according to an embodiment of the present application;

[0066] Fig.11 is the control logic for estimating the core temperature of the cooking device according to the embodiment of the present application;

[0067] Fig.12 is another control logic for estimating the core temperature of the cooking device according to an embodiment of the present application;

[0068] In the above figures: cooking device 100; box shell 1; inner pot 2; cooking cavity 21; cooking cavity opening 211; inner pot rear wall 22; inner pot top wall 23; inner pot bottom wall 24; box door 3; fan cover 4; fan cavity 40; air inlet 41; air outlet 42; fan 5; heating device 61; first heating part 611; second heating part 621; third heating part 631; temperature detection device 71; controller 8. DETAILED DESCRIPTION

[0069] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0070] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0071] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0072] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0073] The present application proposes a cooking device 100 , which will be described below with reference to the accompanying drawings.

[0074] refer to Figure 1-Figure 4 The cooking device 100 may include a housing 1. The housing 1 may be used to protect components located inside the housing 1.

[0075] The bottom of the box shell 1 to the top of the box shell 1 can be the height direction of the box shell 1. The box shell 1 can have a length direction. The side end of the box shell 1 to the other side end of the box shell 1 can be the length direction of the box shell 1. The box shell 1 can have a front-to-back direction. The front of the box shell 1 can be the side of the box shell 1 facing the user. Among the height direction, length direction and front-to-back direction of the box shell 1, any two directions are perpendicular to each other.

[0076] refer to Figure 1-Figure 4The cooking device 100 may include an inner pot 2. The inner pot 2 may be disposed in the housing 1. A cooking cavity 21 may be formed in the inner pot 2. The cooking cavity 21 may be a cavity for placing food. A cooking cavity opening 211 may be provided at the front end of the cooking cavity 21 so that food can be placed in or taken out of the cooking cavity 21.

[0077] refer to Figure 1-Figure 3 The oven 100 may have a door 3. The door 3 may be movably connected to the front side of the housing. The door 3 may be rotatably connected to the housing 1. The door 3 may be arranged at the front end of the cooking cavity opening, and the door 3 is used to open or close the cooking cavity opening.

[0078] In this application, reference is made to Figure 4-Figure 6 The cooking device may include a fan cavity 40. The fan cavity 40 may be located in the inner pot. The cooking device may include an air inlet 41. The air inlet may connect the fan cavity with the cooking cavity 21. The air inlet may be located in the inner pot. The cooking device may include an air outlet 42. The air outlet may connect the fan cavity with the cooking cavity 21. The air outlet may be located in the inner pot.

[0079] In this application, reference is made to Figure 4-Figure 6 The cooking device may include a fan 5. The fan 5 may include a fan. The fan may be arranged in the fan cavity so that the air in the cooking cavity 21 flows into the fan cavity through the air inlet and then flows back to the cooking cavity 21 through the air outlet.

[0080] The fan 5 may include a fan motor. The fan motor may be connected to the fan to drive the fan to rotate. The fan motor drives the fan to rotate so that the air in the cooking cavity 21 flows into the fan cavity through the air inlet and then flows back to the cooking cavity 21 through the air outlet.

[0081] The fan can establish air circulation between the fan cavity and the cooking cavity 21, so that the air temperature and humidity at various locations in the cooking cavity 21 and the fan cavity are relatively uniform, avoiding large temperature or humidity differences between two locations that are far apart, and avoiding uneven cooking caused by large temperature differences.

[0082] In the present application, the fan may be a centrifugal fan. The centrifugal fan may be arranged opposite to the air inlet. The air in the cooking cavity 21 may enter the centrifugal fan through the air inlet along the axial direction of the centrifugal fan, and then flow out of the centrifugal fan along the radial direction of the centrifugal fan.

[0083] In the present application, there may be multiple air outlets. Multiple air outlets may surround the outside of the air inlet. Among them, there may be four air outlets. Each air outlet has several holes. Each air inlet may have several holes.

[0084] In this application, reference is made to Figure 4-Figure 6The inner container 2 may include an inner container rear wall 22. The inner container rear wall 22 may be disposed at the rear end of the inner container.

[0085] The rotating shaft of the fan motor can pass through the rear wall of the inner tank from behind and be inserted into the fan cavity and connected to the fan, so that most of the fan motor is arranged outside the inner tank to prevent the steam or excessive temperature in the inner tank from affecting the fan motor.

[0086] In this application, reference is made to Figure 4-Figure 6 The cooking device 100 may include a fan cover plate 4. The fan cover plate 4 may be disposed in the inner pot 2. The fan cover plate and the inner pot may define a fan cavity 40.

[0087] The fan cover plate 4 can be located in front of the rear wall of the inner pot. The fan cover plate and the rear wall of the inner pot can define a fan cavity. The fan cavity can be located behind the cooking cavity 21.

[0088] The fan cover plate 4 may be formed with an air inlet 41. The air inlet 41 may connect the fan cavity and the cooking cavity 21. The air inlet 41 may be an inlet for air to flow from the cooking cavity 21 into the fan cavity.

[0089] The fan cover plate 4 may be formed with an air outlet 42. The air outlet 42 may connect the fan cavity and the cooking cavity 21. The air outlet 42 may be an outlet for air to flow out of the fan cavity into the cooking cavity 21.

[0090] In this application, reference is made to Figure 5-Figure 8 The cooking device may include a heating device 61. The heating device 61 is disposed between the inner pot and the box body. The heating device 61 may be used to heat the cooking cavity 21.

[0091] In some embodiments, the heating device 61 can be used to heat the air in the fan cavity. The heating device 61 can be at least partially disposed in the fan cavity.

[0092] In some embodiments, the heating device 61 includes a plurality of heating tubes, which are arranged at the inside, top, bottom or a combination thereof of the inner container.

[0093] refer to Figure 5-Figure 8 The heating device 61 may include a first heating portion 611. The first heating portion may surround the outside of the fan along the circumference of the fan. The first heating portion may be spirally wound into at least two turns.

[0094] The first heating unit 611 can heat the air after the air flows out from the centrifugal fan, and the heated air flows back to the cooking cavity 21 through the air outlet.

[0095] In this application, reference is made to Figure 5-Figure 9The heating device 61 may include a second heating portion 621. The second heating portion 621 may be disposed in the cooking cavity 21. The second heating portion 621 may be disposed at the top of the cooking cavity 21.

[0096] The second heating portion 621 can heat the air in the cooking cavity 21. The second heating portion 611 can be a heating wire. The second heating device 61 can be located above the area where the food to be cooked is placed.

[0097] In this application, reference is made to Figure 5-Figure 9 The heating device 6163 may include a third heating portion 631. The third heating portion 631 may be disposed below the inner container. The third heating portion may be a heating wire.

[0098] The inner container may include an inner container bottom wall 24. The inner container bottom wall may be disposed at the bottom end of the inner container. The third heating portion 631 may be disposed below the inner container bottom wall.

[0099] In the present application, the cooking device may include a detection device. The detection device may be used to detect the air temperature and air humidity in the cooking cavity 21. The detection device may be at least partially disposed in the cooking cavity 21.

[0100] The detection device may include a temperature detection device 71. It is used to detect the temperature of the location and define it as the first temperature. The temperature detection device 71 is used to detect the temperature in the cooking cavity 21. The temperature detection device 71 may be a temperature sensor.

[0101] The temperature detection device 71 may be at least partially disposed in the cooking cavity 21 to detect the temperature in the cooking cavity 21 .

[0102] The temperature detection device 71 is installed on the back of the inner container near the edge.

[0103] In the present application, the inner pot may include an inner pot top wall 23. The inner pot top wall 23 may be arranged at the top of the inner pot. The temperature detection element may be connected to the inner pot top wall, and can better detect the air temperature in the cooking cavity 21.

[0104] In this application, reference is made to Fig.10 The cooking device may include a controller 8. The controller 8 may be connected to the fan. The controller 8 may control the rotation and stop of the fan 5.

[0105] The controller 8 may be connected to the heating device 61. The controller 8 can control the heating device 61 to work to heat the air and control the heating device 61 to stop working.

[0106] The controller 8 may be connected to the temperature detection device 71 , and the controller 8 may obtain the air and temperature in the cooking cavity 21 detected by the temperature detection device 71 .

[0107] Since the heating tubes are arranged at different positions of the cooking cavity 21, the effects on the central temperature of the cooking cavity 21 are also different. Ingredients are generally cooked at the center, and the temperature at the center of the cavity is lower than the temperature obtained by the temperature sensor. Therefore, the temperature received by the food does not reach the temperature obtained by the temperature sensor. There is a temperature error, which may cause the food to fail to meet the cooking requirements due to insufficient temperature.

[0108] Therefore, in order to improve the accuracy of predicting the core temperature during the cooking stage and the precise control of the cooking time and cooking temperature, the cooking device proposed in the present application can improve the accuracy of predicting the core temperature of the cooking cavity 21 .

[0109] In some embodiments, a core temperature estimation model is stored in the controller, and the core temperature estimation model is trained based on historical operation data of the cooking device and core temperature data of the cooking cavity 21 detected at corresponding times.

[0110] In some embodiments, the controller is configured to obtain the first temperature detected by the temperature detection device 71 during the cooking process, the discounted power-on time of the heating tube, the opening time of the oven door 3, the first time and the detected center temperature, and train a center temperature estimation model based on the above data.

[0111] The center temperature estimation model is trained using cooking devices of different models to adapt to the differences caused by the different installation positions of heating tubes in different models.

[0112] In the disclosed embodiment, the center temperature estimation model is configured as a deep neural network model, which accurately predicts the temperature at the center of the cooking cavity 21 by learning historical data and real-time input, thereby helping to better ensure that the food in the cooking cavity 21 reaches the set temperature, avoiding overcooking that causes the food to dry out, or undercooking that causes the food to be uncooked, thereby ensuring the cooking effect of the food.

[0113] The above-mentioned core temperature estimation model can be deployed on a single chip microcomputer or smart board of a cooking device and can be called during cooking. Data is collected during the cooking process and the corresponding data is processed. After inputting the core temperature estimation model, the core temperature of the cooking device can be obtained.

[0114] When the cooking device switches modes, for example, the upper and lower grills are switched to the upper grills, the temperature distribution is complex and changes over time. At this time, the linear fitting method cannot accurately predict the center temperature, resulting in large fluctuations in the center temperature of the cooking device.

[0115] The heating tubes at different positions start working, stop working, increase power or decrease power, etc., and the distance between different heating tubes and the center position is different, the heat radiation of different heating tubes is also different, and the impact on the center temperature is also different. When switching modes, the heat source changes, and the impact of the heat source on the center temperature is also different, resulting in temperature fluctuations.

[0116] In some embodiments, when the mode is switched, the time after the mode is switched is recorded and defined as the first time. The mode switching time is recorded to reflect the state change time in the cooking cavity 21, so as to better predict the core temperature.

[0117] Recording the first time when switching modes and combining it with other parameters to input into the core temperature estimation model can significantly improve the accuracy of temperature prediction, optimize the heating tube control strategy, improve energy efficiency and system response speed, and ultimately improve the overall cooking effect and food safety.

[0118] In some embodiments, the first temperature detected by the temperature detection device 71, the opening time of the door 3, and the power-on time of each heating tube are obtained.

[0119] The first time, the first temperature, the opening time of the door 3, and the power-on time of each heating tube are input into the central temperature estimation model, and the predicted central temperature is output. By combining the above parameters, the central temperature estimation model can more accurately estimate the temperature change trend in the cooking cavity 21, thereby improving the prediction accuracy.

[0120] The reason for recording the opening time of the door 3 is that the user may open the door during use. The door opening action will cause heat loss in the cooking cavity 21, thereby causing the core temperature to drop rapidly. In some embodiments, the calculation unit of the opening time of the door 3 is seconds.

[0121] And according to the preset core temperature, the working state of each heating tube is adjusted based on the set temperature value. According to the predicted core temperature, the working state of each heating tube can be dynamically adjusted, making the temperature control more accurate and efficient.

[0122] By taking into account the working conditions of the heating tubes at different positions and the influence of the sealing of the cooking cavity 21 on the central temperature, the accuracy of predicting the central temperature is improved, thereby reducing temperature fluctuations and improving the user experience.

[0123] Of course, the above core temperature estimation method can also be applied to other scenarios where the heating conditions change. For example, after the cooking device has completed rapid preheating.

[0124] In some embodiments, the discounted power-on time of each heating tube is obtained based on the first operation logic according to the power-on time of each heating tube and a preset discount factor.

[0125] Among them, the preset discount factor is related to the position of different heating tubes, so as to refer to the influence of different heating tubes on the center temperature and improve the accuracy of center temperature prediction.

[0126] Since in the cooking process of the cooking device, the earlier the heating is, the smaller the contribution to the current center position is, a preset discount factor is added to the power-on time to quantify the impact of different heating tubes working at different times on the center position.

[0127] In some embodiments, the predicted core temperature is output based on the core temperature estimation model according to the discounted power-on time of each heating tube, the first temperature, the opening time of the cabinet, and the first time.

[0128] In the above, the influence of each heating tube on the core temperature is quantified as the discounted power-on time of each heating tube, and added to the input of the core temperature estimation model, thereby optimizing the model input and improving the accuracy of the preset core temperature output by the model.

[0129] In some embodiments, the controller is configured to obtain the power-on time of each heating tube within the first preset time after cooking starts, with the first preset time as the calculation interval;

[0130] Obtain a first parameter based on the first sub-logic by using the power-on time of the first preset time and the preset depreciation factor;

[0131] The first parameter from the start of the cooking stage to the current moment is calculated, and the discounted power-on time of the corresponding heating tube is obtained by accumulating the first parameter.

[0132] By taking the first preset time as the calculation interval and obtaining the power-on time of each heating tube in the time period, the working condition of the heating tube can be monitored and recorded in real time, which helps to understand the actual workload of the heating tube and ensure that each heating tube can operate in the expected manner.

[0133] The power-on time of the first preset time and the preset depreciation factor are used to obtain the first parameter based on the first sub-logic. This step takes into account the influence of the workload and aging degree of the heating tube on the power-on time. By introducing the depreciation factor, the actual working state of the heating tube can be more accurately evaluated, thereby more accurately controlling the temperature change during the cooking process.

[0134] In some embodiments, the calculation formula of the discounted power-on time of the heating tube is as follows:

[0135]

[0136] Among them, T elecis the discounted power-on time of the heating tube, in seconds. T is the total time from the start of cooking to the present, in minutes. t is the power-on time within time t. γ is a preset discount factor, where γ can be set to other values ​​between 0 and 1.

[0137] Take an example where γ is 0.95 and a heating tube is heated for 10 seconds per minute.

[0138] Taking three minutes as an example, calculate the discounted power-on time of the heating tube.

[0139]

[0140] From the above, we can know that from the current moment, the power-on time of the past one minute is recorded as 10 seconds. The power-on time of the past two minutes is recorded as 9.5 seconds, and the power-on time of the past three minutes is 9.025 seconds. The discounted power-on time of the heating tube for the central temperature at the current moment is 28.525 seconds.

[0141] Of course, γ can be adjusted according to factors such as the installation position of the heating tube and the heat radiation under actual working conditions, so as to train a center temperature estimation model that meets the requirements.

[0142] Reference Fig.11 , illustrating the control logic of the core temperature estimation of the cooking device in the present disclosure.

[0143] When obtaining the mode switching of the cooking device, the time elapsed after the mode switching (first time), the first temperature detected by the temperature detection device 71, the opening time of the door 3, the discounted power-on time of each heating tube and the core temperature are obtained, and the above data are used for model training (S1101).

[0144] When the cooking device mode is switched, start recording time and define the time as the first time (S1102);

[0145] Obtain the opening time of the door 3 (S1103);

[0146] Taking the first preset time as a calculation interval, obtaining the power-on time of each heating tube within the first preset time (S1104);

[0147] The discounted power-on time from the start of the cooking phase to the current moment is calculated using the power-on time within the first preset time and the preset discount factor (S1105).

[0148] The first temperature detected by the temperature detection device 71 is acquired (S1106).

[0149] The first time, the opening time of the door 3, the discounted power-on time and the first temperature are input into the core temperature estimation model trained in S1101, and an estimated preset core temperature is obtained (S1107).

[0150] The working state of each heating tube is adjusted based on the set temperature value according to the preset central temperature (S1109).

[0151] In some embodiments, the controller is configured to control the fan to run during the cooking process to accelerate the airflow rate in the cooking cavity 21. By controlling the fan to run, the airflow in the cooking cavity 21 is accelerated, and the temperature uniformity of the entire cooking cavity 21 is improved.

[0152] In some embodiments, the cooking device further comprises a door 3 detection device for detecting the opening angle of the door 3 .

[0153] In some embodiments, the controller is configured to obtain the first temperature detected by the temperature detection device 71 during the cooking process, the discounted power-on time of the heating tube, the opening time of the door 3, the opening angle of the door 3, the first time and the detected central temperature, and train a central temperature estimation model based on the above data, so as to further analyze and optimize the central temperature estimation model and improve system performance.

[0154] The core temperature estimation model trained based on the above data can more accurately predict the core temperature during the cooking process. By combining multiple influencing factors, the model can more finely simulate the temperature change trend during the actual cooking process, thereby providing a more accurate temperature estimation result.

[0155] In some embodiments, when the cooking device switches modes, the time after the mode switching is recorded and defined as the first time, recorded as T1;

[0156] The power-on time of each heating tube of the cooking device is obtained, and the heating tube is provided with a plurality of heating tubes, which are respectively recorded as H1, H2...Hn. The discounted power-on time of each heating tube is calculated based on the first operation logic according to the power-on time of each heating tube. The pre-trained center temperature estimation model is input according to the discounted power-on time of each heating tube, the first temperature detected by the temperature detection device provided in the cooking device, the opening time of the cooking device, and the first time, and the predicted center temperature is output.

[0157] By recording the first time after the mode is switched, the power-on time of each heating tube is obtained and the discounted power-on time is calculated. Then, this information, together with the current temperature and the cooking device opening time, is input into the pre-trained core temperature estimation model, and finally the predicted core temperature of the food can be obtained. This method helps to improve the temperature control accuracy during the cooking process, thereby improving the quality of the food.

[0158] Reference Fig.12 , illustrating another control logic for estimating the core temperature of the cooking device in the present disclosure.

[0159] When obtaining the mode switching of the cooking device, the time elapsed after the mode switching (first time), the first temperature detected by the temperature detection device 71, the opening time of the door 3, the opening angle of the door 3, the discounted power-on time and the center temperature of each heating tube are obtained, and the above data are used for model training (S1201).

[0160] When the cooking device mode is switched, start recording time and define the time as the first time (S1202);

[0161] Obtain the opening time of the door 3 (S1203);

[0162] Taking the first preset time as a calculation interval, obtaining the power-on time of each heating tube within the first preset time (S1204);

[0163] The discounted power-on time from the start of the cooking phase to the current moment is calculated using the power-on time within the first preset time and the preset discount factor (S1205).

[0164] The first temperature detected by the temperature detection device 71 is acquired (S1206).

[0165] The opening angle of the door 3 is obtained (S1208).

[0166] The first time, the opening time of the door 3, the opening angle of the door 3, the discounted power-on time and the first temperature are input into the central temperature estimation model trained in S1201, and an estimated preset central temperature is obtained (S1207).

[0167] The working state of each heating tube is adjusted based on the set temperature value according to the preset central temperature (S1209).

[0168] The embodiment of the present application further provides a core temperature estimation method, which is applied to a cooking device. The core temperature estimation method includes:

[0169] When the cooking device switches modes, the time after the mode switching is recorded and defined as the first time;

[0170] When the cooking device switches modes, the system automatically records the time after the mode switch and defines it as the first time. This time point is crucial for subsequent temperature estimation because it marks the beginning of a new cooking stage and also represents the node where the working status of each component changes.

[0171] The power-on time of each heating tube of the cooking device is obtained, and the discounted power-on time of each heating tube is calculated based on the first operation logic according to the power-on time of each heating tube. This step helps to more accurately reflect the actual contribution of the heating tube to the cooking process.

[0172] The center temperature estimation model is pre-trained according to the discounted power-on time of each heating tube, the first temperature detected by the temperature detection device 71 arranged in the cooking device, the opening time of the cooking device, and the first time input, and the predicted center temperature is output.

[0173] The core temperature estimation model is trained based on historical operation data of the cooking device and corresponding core temperature data of the cooking cavity 21 detected.

[0174] This core temperature estimation method can not only monitor the temperature changes during the cooking process in real time, but also improve the accuracy of temperature estimation through detailed analysis of the working status of the heating tube, providing users with more precise cooking guidance.

[0175] In some embodiments, after cooking starts, the power-on time of each heating tube within the first preset time is obtained with the first preset time as the calculation interval.

[0176] This interval can be adjusted according to actual needs to ensure that the frequency of data collection can reflect the temperature change trend, but is not too frequent to increase the calculation complexity. Those skilled in the art should know that the calculation unit of each parameter can be adjusted according to different time interval settings.

[0177] The power-on time of each heating tube can be directly read according to the control logic of the controller for the heating tube, and can be verified by referring to the temperature change in the cooking cavity, so as to avoid the situation that the heating tube should work but does not work.

[0178] The power-on time of the first preset time and the preset depreciation factor are used to obtain a first parameter based on the first sub-logic.

[0179] P i =γ T-t W t

[0180] Among them, P t is the first parameter. T is the total time from the start of cooking to the present, in minutes. t is the power-on time at time t. γ is a preset discount factor, where γ can be set to other values ​​between 0 and 1. γ is used to adjust the influence of the power-on time on the discounted power-on time.

[0181] The first parameter from the start of the cooking stage to the current moment is calculated, and the discounted power-on time of the corresponding heating tube is obtained by accumulating the first parameter.

[0182] From the beginning of the cooking phase to the current moment, we need to calculate all the first parameters P i The accumulated values ​​are added to obtain the discounted power-on time of the corresponding heating tube.

[0183]

[0184] Among them, T elec is the discounted power-on time of the heating tube, in seconds. n represents the number of preset time intervals from the start of cooking to the current moment, P i Represents the first parameter of the heating tube in the i-th time interval.

[0185] The above steps effectively calculate the discounted power-on time of each heating tube during the cooking process, thereby more accurately estimating the core temperature of the food. This method can not only improve the accuracy of temperature estimation, but also better reflect the actual impact of the heating tube on the cooking effect.

[0186] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0187] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A cooking device, characterized in that: include: A box body, which is used to form the outer contour of the cooking device; An inner pot is arranged inside the box body, and the inner pot is used to form the cooking cavity; a cooking cavity opening is arranged at the front end of the cooking cavity; A door, used to open or close the cooking cavity opening; A heating device is provided between the inner pot and the box body and is used to heat the cooking cavity; the heating device comprises: A plurality of heating tubes, wherein the heating tubes are arranged at one of the back, top, bottom or a combination of the back, top and bottom of the inner container; A temperature detection device, which is disposed in the cooking cavity and is used to detect the temperature at the location, which is defined as a first temperature; A controller, the controller being electrically connected to the heating device and the temperature detection device, wherein a central temperature estimation model is stored in the controller, and the central temperature estimation model is trained based on historical operation data of the cooking device and corresponding central temperature data of the cooking cavity detected; The controller is configured to, when performing mode switching, record the time after the mode switching and define it as the first time; Acquire the first temperature detected by the temperature detection device, the opening time of the door, and the power-on time of each heating tube; Inputting the first time, the first temperature, the opening time of the door, and the power-on time of each of the heating tubes into the central temperature estimation model, and outputting a predicted central temperature; The working state of each heating tube is adjusted based on the set temperature value according to the preset central temperature.

2. The cooking device according to claim 1, characterized in that: The discounted power-on time of each of the heating tubes is obtained based on the first operation logic according to the power-on time of each of the heating tubes and the preset discount factor.

3. The cooking device according to claim 2, characterized in that: The predicted central temperature is output based on the central temperature estimation model according to the discounted power-on time of each of the heating tubes, the first temperature, the opening time of the box, and the first time.

4. The cooking device according to claim 2, characterized in that: The controller is configured to obtain the first temperature detected by the temperature detection device during the cooking process, the discounted power-on time of the heating tube, the opening time of the door, the first time and the detected core temperature, and obtain the core temperature estimation model based on the above data training.

5. The cooking device according to claim 1, characterized in that: The temperature detection device is arranged at a position close to the edge of the back of the inner container.

6. The cooking device according to claim 2, characterized in that: The controller is configured to obtain the power-on time of each heating tube within the first preset time after cooking starts, taking the first preset time as a calculation interval; Obtain a first parameter based on the first sub-logic by combining the power-on time of the first preset time and the preset depreciation factor; A first parameter from the start of the cooking stage to the current moment is calculated, and the first parameter is accumulated to obtain a discounted power-on time corresponding to the heating tube.

7. The cooking device according to claim 1, characterized in that: Also includes: A fan chamber, located in the inner tank; An air inlet, used to connect the fan cavity and the cooking cavity; An air outlet, used to connect the fan cavity and the cooking cavity; a fan disposed in the fan cavity so that the air in the cooking cavity flows into the fan cavity through the air inlet and then flows back into the cooking cavity through the air outlet; The controller is configured to control the fan to operate during cooking to accelerate the airflow velocity in the cooking cavity.

8. The cooking device according to claim 1, characterized in that: Also includes: A door detection device, used to detect the opening angle of the door; The controller is configured to obtain the first temperature detected by the temperature detection device during the cooking process, the discounted power-on time of the heating tube, the opening time of the door, the opening angle of the door, the first time and the detected center temperature, and obtain the center temperature estimation model based on the above data training.

9. A cooking device, characterized in that: include: A box body, which is used to form the outer contour of the cooking device; An inner pot is arranged inside the box body, and the inner pot is used to form the cooking cavity; a cooking cavity opening is arranged at the front end of the cooking cavity; A door, used to open or close the cooking cavity opening; A heating device is provided between the inner pot and the box body and is used to heat the cooking cavity; the heating device comprises: A plurality of heating tubes, wherein the heating tubes are arranged at one of the back, top, bottom or a combination of the back, top and bottom of the inner container; A temperature detection device, which is disposed in the cooking cavity and is used to detect the temperature at the location, which is defined as a first temperature; A controller, the controller is electrically connected to the heating device and the temperature detection device, and a central temperature estimation model is stored in the controller, wherein the central temperature estimation model is trained based on historical operation data of the cooking device and corresponding central temperature data of the cooking cavity detected; The controller is configured to, when the cooking device switches the mode, record the time after the mode is switched and define it as the first time; Acquire the power-on time of each heating tube of the cooking device, and calculate the discounted power-on time of each heating tube based on the first operation logic according to the power-on time of each heating tube; A center temperature estimation model is pre-trained based on the discounted power-on time of each heating tube, the first temperature detected by a temperature detection device in the cooking device, the opening time of the cooking device, and the first time input, and the predicted center temperature is output.

10. The cooking device according to claim 9, characterized in that: The controller is configured to, After cooking starts, taking the first preset time as a calculation interval, obtaining the power-on time of each heating tube within the first preset time; Obtain a first parameter based on the first sub-logic by combining the power-on time of the first preset time and the preset depreciation factor; A first parameter from the start of the cooking stage to the current moment is calculated, and the first parameter is accumulated to obtain a discounted power-on time corresponding to the heating tube.

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