A method for controlling a cooking appliance

Abstract

This application provides a control method for a cooking appliance, which includes a pot body and a lid. The lid is equipped with a top temperature sensor for collecting the top temperature. The method includes: stopping heating and continuing for a predetermined time when entering the heat preservation stage; detecting the change in the top temperature after the predetermined time has been reached; and determining whether to resume heating based on the temperature value of the top temperature after the top temperature has reached a stable state when the top temperature is rising. The above technical solution solves the technical problem that rice sticks to the pot when the lid is opened to check the rice's condition during the heat preservation process.

Description

Technical Field

[0001] This invention relates to the field of food processing, and more specifically to a method for controlling cooking utensils. Background Technology

[0002] With rising living standards, keeping rice warm has become an important requirement for most families. Traditional cooking appliances automatically switch to keep-warm mode when rice cooking is finished, or the user can manually select the keep-warm function at any other time. Current keep-warm solutions typically operate on a time interval or based on temperature feedback. During the keep-warm process, there's a possibility of opening the lid, such as to serve rice or check its condition. Since the top temperature sensor is directly exposed to the air, the detected temperature drops rapidly, and the system detects this and starts heating. Because the inner pot has a higher thermal conductivity than the rice, the inner pot temperature rises under the heating element. If the rice cannot maintain its heat, the inner pot temperature rises further, causing the rice to stick to the pot, especially on uncoated inner pots where sticking is more severe.

[0003] Therefore, there is an urgent need to propose a control method and cooking appliance for cooking utensils, so as to at least solve the technical problem that rice sticks to the pot when the lid is opened to check the rice's condition while it is being kept warm. Summary of the Invention

[0004] This application provides a method for controlling a cooking appliance to at least solve the technical problem in the related art where rice sticks to the pot when the lid is opened midway to check the rice's condition while it is being kept warm.

[0005] This application provides a control method for a cooking appliance, the cooking appliance including a pot body and a pot lid, the pot lid being provided with a top temperature sensor for collecting the top temperature, the method including: stopping heating and continuing for a predetermined time when entering the heat preservation stage; detecting the change state of the top temperature after the predetermined time is reached; when the top temperature is in a rising state, determining whether to resume heating based on the temperature value of the top temperature after the top temperature reaches a stable state.

[0006] Optionally, when the top temperature is not rising, the cooking appliance is controlled to resume heating.

[0007] Optionally, determining whether to resume heating based on the temperature value of the top temperature includes: determining whether the stabilized top temperature is less than a first preset value; when the stabilized top temperature is less than the first preset value, controlling the cooking appliance to resume heating; when the stabilized top temperature is greater than the first preset value, keeping heating stopped.

[0008] Optionally, the pot body is equipped with a pot inner liner, a cooling device, and a bottom temperature sensor for collecting the bottom temperature of the pot body. The step of determining whether to resume heating based on the temperature value of the top temperature further includes: when the stabilized top temperature is greater than the first preset value, determining whether the bottom temperature is less than the second preset value; when the bottom temperature is less than the second preset value, keeping heating stopped until the top temperature is less than the first preset value, then controlling the cooking appliance to resume heating; when the bottom temperature is greater than the second preset value, keeping heating stopped, activating the cooling device to cool the pot inner liner until the bottom temperature is less than the second preset value, turning off the cooling device, and waiting for the top temperature to be less than the first preset value before controlling the cooking appliance to resume heating.

[0009] Optionally, when the top temperature is rising, it is confirmed that the lid is being opened and closed, and the rice inside the pot is hot.

[0010] Optionally, when the top temperature is not rising, it is determined whether the top temperature is stable below a third preset value; when the top temperature is stable below the third preset value, the cooking appliance is controlled to resume heating with a first power.

[0011] Optionally, when the top temperature stabilizes below a third preset value, it is confirmed that the lid is continuously open or the rice is cold.

[0012] Optionally, when the top temperature is not rising, it is determined whether the top temperature is in a continuously decreasing state; when the top temperature is in a continuously decreasing state, the cooking appliance is controlled to resume heating with a second power.

[0013] Optionally, the first power is greater than the second power.

[0014] Optionally, stopping heating and continuing for a predetermined duration further includes: controlling the cooling device to continue working for a predetermined duration, and controlling the cooling device to stop heating when the predetermined duration is reached.

[0015] In this embodiment, a control method for a cooking appliance is provided. The cooking appliance includes a pot body and a lid. A top temperature sensor is provided on the lid to collect the top temperature. The method includes: stopping heating and continuing for a predetermined time when entering the heat preservation stage; detecting the change in the top temperature after the predetermined time has been reached; and determining whether to resume heating based on the temperature value of the top temperature after the top temperature has reached a stable state when the top temperature is rising. This technical solution solves the problem that rice sticks to the pot when the lid is opened to check the rice's condition during the heat preservation process. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart illustrating a method for controlling a cooking appliance according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of an optional cooking appliance according to an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the structure of another optional cooking appliance according to an embodiment of this application;

[0021] Figure 4 This is a structural block diagram of an optional cooking appliance according to an embodiment of this application. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] This application provides a control method for a cooking appliance, which includes at least a rice cooker, an electric pressure cooker, and an IH electric pressure cooker or an IH rice cooker. The cooking appliance includes a pot body and a lid. The pot body is equipped with a heating device and an inner pot. The heating device is used to heat the inner pot. In this embodiment, the inner pot may include an inner pot with a non-stick coating on its inner wall and a metal-layered inner pot. Since rice sticking to the pot is more likely with a metal-layered inner pot, this embodiment uses a metal-layered inner pot as an example. A top temperature sensor is provided on the lid to collect the top temperature. The cooking stages of the cooking appliance may include: a preheating stage, a water absorption stage, a heating stage, a boiling stage, a simmering stage, and a heat-keeping stage after the simmering stage. As an exemplary embodiment, the cooking appliance is considered complete after the simmering stage and then enters the heat-keeping stage.

[0025] S102. When entering the heat preservation stage, stop heating and continue for the predetermined duration;

[0026] During the keep-warm stage, the rice may stick to the pot due to the possibility of opening the lid midway, such as to add rice or check its condition. Typically, the rice is at a high temperature during the keep-warm stage, and this temperature tends to remain for a period of time, especially if the lid is not opened. Therefore, in this embodiment, heating is stopped and maintained for a predetermined duration during the keep-warm stage. In this embodiment, the predetermined duration is at least set such that the rice is not completely cooled after heating is stopped with the lid closed. Preferably, the predetermined duration is set such that the temperature at the top of the pot shows a decreasing trend after the predetermined duration during heating is stopped with the lid closed. For example, the predetermined duration can be 10-60 minutes, and 30 minutes can be used as an example. In this embodiment, the predetermined duration can be based on user settings and can also be adaptively adjusted based on ambient temperature.

[0027] If the lid is not opened during cooking, or only for a short time, the rice will remain hot. Furthermore, since heating has stopped, even if the lid is opened to serve rice or check its condition, the temperature sensor at the top will not trigger a warming process, preventing moisture loss and sticking. On the other hand, because no heating is being performed, the metal inner pot has a higher thermal conductivity than the rice, resulting in better heat dissipation. The metal inner pot cools down faster, making the inner pot temperature lower than the rice temperature. Since rice has a high water content and stores more heat, the cooler inner pot causes the moisture to condense on the inner pot, forming a condensation film that prevents the rice from sticking.

[0028] S104. After the predetermined time period is reached, the change in the top temperature is detected. During the process of stopping heating, various situations may occur, such as opening the lid and forgetting to close it, not opening the lid at all, or opening and then closing the lid. Different ambient temperatures and the amount of rice also have a certain impact on the subsequent heat preservation process. Therefore, in this embodiment, by observing the change in the top temperature after the predetermined time period is reached, the user's actions and the state of the rice during the heating stop period can be determined, thereby determining a more suitable heat preservation program.

[0029] In this embodiment, the top temperature may be in one of the following states: rising, stable, or falling.

[0030] When the top temperature is rising, it indicates that during the process of stopping heating, there was an opening action, such as opening the lid to serve rice or observe the rice's condition. The cooking appliance went through the opening action and then the closing action. Furthermore, the time between the opening and closing actions and the predetermined time point is relatively short. Also, it is possible that due to the high ambient temperature or the short interval between opening and closing the lid, the rice is in a hot state. After closing the lid, the temperature around the top temperature sensor is heated, causing the top temperature to rise.

[0031] When the top temperature remains stable, it may be because the user left the lid open for an extended period, causing the top temperature sensor to be exposed to outside air for a prolonged time. As a result, the sensor's temperature decreases and remains at room temperature. Similarly, because the user left the lid open for so long, both the inner pot and the rice are exposed to outside air, causing their temperatures to decrease and remain at room temperature. In lower ambient temperatures, the rice temperature drops to room temperature more easily. In this situation, it may be impossible to detect whether the lid is closed.

[0032] When the top temperature is decreasing, it indicates that during the predetermined time period, there was an opening action, such as adding rice or checking the rice's condition by opening the lid. The cooking appliance then underwent a closing action after the opening action, and the time remaining before reaching the predetermined time period was relatively long. This is because during the opening action, the top temperature sensor was exposed to the air and dissipated heat. At this time, the closing action was performed within a short time interval. When the lid was closed, the top temperature was lower than the temperature of the rice and / or the inner pot. After closing, the temperature of the inner pot and / or the rice caused the top temperature sensor to rise briefly. However, since there was no heat supply at this time, the rice and the inner pot continued to dissipate heat after the predetermined time period was reached, resulting in a decreasing top temperature. Alternatively, when the top temperature is decreasing, it can also indicate that no opening action occurred during the predetermined time period. This is because during the predetermined time period, the cooking appliance stopped heating, and there was no heat supply. During the predetermined time period, the rice continued to dissipate heat, resulting in a decreasing top temperature.

[0033] S106. When the top temperature is rising, after the top temperature reaches a stable state, determine whether to resume heating based on the temperature value of the top temperature.

[0034] When the top temperature is rising, it indicates that during the process of reaching the predetermined time, there was an opening action, such as opening the lid to serve rice or observe the state of the rice. The cooking appliance went through the opening action and then the closing action, and the rice is still hot. The risk of the rice sticking together is still relatively high. It is necessary to determine whether to resume heating based on the temperature value of the top temperature after the top temperature reaches a stable state.

[0035] For example, because the metal inner pot dissipates heat better, it cools down first, causing the temperature of the inner pot to drop more quickly, making the inner pot temperature lower than the rice temperature. Rice has a high water content and stores a lot of heat; because the inner pot temperature is lower than the rice temperature, the moisture in the rice condenses on the inner pot, forming a condensation film between the inner pot and the rice, preventing the rice from sticking to the pot. For example, when the rice temperature is below a certain level, it is easier for a condensation film to form between the inner pot and the rice, preventing sticking; for example, when the rice temperature is between 60℃ and 80℃ and the inner pot temperature is below 95℃, a condensation film can form between the inner pot and the rice, preventing sticking; when the inner pot temperature is above 95℃, sticking is more likely to occur. In this embodiment, the temperature values ​​described above are merely illustrative examples; other temperature values ​​are also within the scope of protection of this application. Furthermore, since the top temperature decreases after being exposed to air, and the top temperature sensor is located within the relatively enclosed heating space of the cooking appliance after the lid is closed, temperature fluctuations, such as a temperature rise followed by a fall, may occur. Therefore, directly reading the top sensor temperature as the rice temperature after the lid is closed would introduce some error. Based on this, after the top temperature reaches a stable state, a determination is made whether to resume heating based on the top temperature value.

[0036] For example, after the top temperature reaches a stable state, determining whether to resume heating based on the top temperature value may include judging whether the stable temperature is lower than a first preset value; when the stable temperature is lower than the first preset value, controlling the cooking appliance to resume heating so that the temperature of the rice approaches the first preset value; for example, controlling the cooking appliance to resume heating at least includes controlling the heating device of the cooking appliance to resume heating. When the stable temperature is higher than the first preset value, heating is stopped; for example, controlling the cooking appliance to stop heating at least includes controlling the heating device of the cooking appliance to stop heating so that the temperature of the rice approaches the first preset value.

[0037] For example, the first preset value can be any temperature value within the range of 60℃-80℃, and no specific limitation is made here; preferably, the first preset value is 75℃.

[0038] As an exemplary embodiment, the cooking appliance is controlled to resume heating when the top temperature is not rising.

[0039] When the top temperature is not rising, it may be in a decreasing or stable state. If the top temperature is stable, it's possible that the user left the lid open for an extended period, exposing the top temperature sensor to outside air for a long time, causing the sensor temperature to drop and remain at room temperature. In this case, because the user left the lid open for so long, both the inner pot and the rice were exposed to outside air. At this low ambient temperature, both the inner pot and the rice temperatures dropped and remained at room temperature. Because the ambient temperature is low, the inner pot dissipates heat effectively. If the cooking appliance is restarted, both the rice and the inner pot will heat up simultaneously, reducing the risk of the rice sticking together.

[0040] When the top temperature is decreasing, it indicates that during the predetermined time period, there was an opening action, such as adding rice or observing the rice's condition, resulting in the lid being opened. The cooking appliance underwent a lid-closing action after the opening action, with a relatively long time interval between the opening and closing actions. This is because during the opening action, the top temperature sensor was exposed to the air and dissipated heat. At this time, the lid-closing action was performed within a short time interval. When the lid was closed, the top temperature was lower than the temperature of the rice and / or the inner pot. After closing, the inner pot and / or rice caused the top temperature sensor to rise briefly. However, since there was no heat supply at this time, the rice and the inner pot dissipated heat during the predetermined time period, causing the top temperature to decrease. However, because the top temperature was still decreasing rather than remaining stable, it indicates that the rice still had some residual heat. If the cooking appliance were to resume heating at this point, the rice and the inner pot would heat up simultaneously, with the rice temperature exceeding the inner pot temperature, thus reducing the risk of the rice sticking together.

[0041] Therefore, when the top temperature is not rising, control the cooking appliance to resume heating, at which point the risk of rice sticking to the ground is low.

[0042] For example, controlling the cooking appliance to resume heating includes at least controlling the heating device of the cooking appliance to resume heating.

[0043] As an exemplary embodiment, determining whether to resume heating based on the temperature value of the top temperature includes: determining whether the stabilized top temperature is less than a first preset value; when the stabilized top temperature is less than the first preset value, controlling the cooking appliance to resume heating; when the stabilized top temperature is greater than the first preset value, keeping heating stopped.

[0044] When the top temperature is rising, it indicates that during the predetermined time period, there was an opening action, such as adding rice or observing the rice's condition, which involved opening the lid. The cooking appliance then underwent a closing action after the opening action, and the time interval between the closing action and the closing action was short. This is because, during the opening action, the top temperature sensor was exposed to the air and dissipated heat to the outside. At this time, the closing action was performed within a short time interval. When the lid was closed, the top temperature was lower than the temperature of the rice and / or the inner pot. After the lid was closed, the temperature of the inner pot and / or the rice caused the top temperature sensor to rise. At this time, the rice was in a relatively hot state. Since the ambient temperature was high, the risk of the rice sticking together was relatively high.

[0045] Because the metal inner pot dissipates heat better, it cools down first, causing the temperature of the inner pot to drop faster, making the temperature of the inner pot lower than that of the rice. Rice has a high water content and stores a lot of heat; since the inner pot is cooler than the rice, the moisture in the rice condenses on the inner pot, forming a condensation film between the inner pot and the rice, preventing the rice from sticking to the pot. When the rice temperature is between 60℃ and 80℃, this condensation film can also form between the inner pot and the rice, preventing the rice from sticking to the pot.

[0046] Since the top temperature sensor is closer to the rice inside the relatively sealed heating chamber of the cooking appliance after stabilization, its temperature value is closer to the rice's temperature. Therefore, the stabilized top temperature of the cooking appliance can be used as the rice's temperature. Based on this, it is determined whether the stabilized top temperature is lower than a first preset value. When the stabilized top temperature is lower than the first preset value, a condensation film cannot form between the inner pot and the rice, and the cooking appliance needs to be controlled to resume heating. For example, controlling the cooking appliance to resume heating includes at least controlling the heating device of the cooking appliance to resume heating. When the stabilized top temperature is higher than the first preset value, a condensation film can form between the inner pot and the rice, and heating is stopped. For example, controlling the cooking appliance to stop heating includes at least controlling the heating device of the cooking appliance to stop heating.

[0047] For example, the first preset value can be 75°C, or other selectable temperatures within the range of 60°C-80°C, without specific limitations here; when the stabilized top temperature is less than the first preset value, the heating power controlling the cooking appliance to resume heating should be less than the heating power of the cooking appliance for heat preservation heating.

[0048] As an exemplary embodiment, such as Figure 2 and Figure 3As shown, the pot body is equipped with a pot inner liner 21, a cooling device 24, and a bottom temperature sensor for collecting the bottom temperature of the pot body. The step of determining whether to resume heating based on the top temperature value further includes: when the stabilized top temperature is greater than the first preset value, determining whether the bottom temperature is less than the second preset value; when the bottom temperature is less than the second preset value, keeping heating stopped, allowing the bottom temperature value to approach the second preset value, until the top temperature is less than the first preset value, then controlling the cooking appliance to resume heating; when the bottom temperature is greater than the second preset value, keeping heating stopped, activating the cooling device to cool the pot inner liner, until the bottom temperature is less than the second preset value, turning off the cooling device, and waiting for the top temperature to be less than the first preset value before controlling the cooking appliance to resume heating.

[0049] Because the metal inner pot dissipates heat better, it cools down faster, resulting in a lower temperature inside the pot compared to the rice. Rice has a high water content and stores a lot of heat; since the inner pot is cooler, the moisture in the rice condenses on the inner pot, forming a condensation film between them to prevent sticking. This condensation film is effective when the rice temperature is between 60℃ and 80℃. Sticking is more likely to occur when the inner pot temperature exceeds 95℃.

[0050] For example, when the stabilized top temperature is greater than the first preset value, it is determined whether the bottom temperature is less than the second preset value; when the bottom temperature is less than the second preset value, a condensation film can be formed between the inner pot and the rice to prevent the rice from sticking to the pot. At this time, heating is stopped to allow the bottom temperature value to approach the second preset value until the top temperature is less than the first preset value.

[0051] For example, when the bottom temperature is greater than the second preset value, heating is stopped, and the cooling device is activated to cool the inner pot until the bottom temperature is less than the second preset value. Then, the cooling device is turned off, at which point a condensation film can form between the inner pot and the rice. When the top temperature is less than the first preset value, a condensation film cannot form between the inner pot and the rice. The cooking appliance is then controlled to resume heating so that the top temperature approaches the first preset value.

[0052] For example, the second preset value can be 95°C.

[0053] As an exemplary embodiment, when the top temperature is rising, it is confirmed that the pot lid has an opening and closing action, and the rice inside the pot is in a hot state.

[0054] When the top temperature is rising, it indicates that during the process of stopping heating, there was an opening action, such as opening the lid to serve rice or observe the rice's condition. The cooking appliance then underwent a closing action after the opening action. Furthermore, the time interval between the opening and closing actions and reaching the predetermined duration is relatively short. Also, due to the high ambient temperature or the short time interval between opening and closing the lid, the rice may be in a hot state, which can heat the temperature around the top temperature sensor after closing the lid, causing the top temperature to rise. Therefore, when the top temperature is rising, it is confirmed that the lid has undergone both opening and closing actions.

[0055] When the top temperature is rising, it indicates that after heating stopped, there was an opening action, such as opening the lid to serve rice or observe the rice's condition. The cooking appliance then went through the opening and closing action. Moreover, due to the high ambient temperature or the short interval between opening and closing the lid, the rice is in a relatively hot state. After closing the lid, it can heat the temperature around the top temperature sensor, causing the top temperature to rise. Therefore, when the top temperature is rising, it confirms that the lid has been opened and closed, and the rice inside the pot is hot. At this time, the rice is in a relatively hot state, and the ambient temperature is high, so the risk of the rice sticking together is relatively high.

[0056] As an exemplary embodiment, when the top temperature is not rising, it is determined whether the top temperature is stable below a third preset value; when the top temperature is stable below the third preset value, the cooking appliance is controlled to resume heating with a first power.

[0057] In this embodiment, when the top temperature is not rising, the following states may exist: a stable state or a falling state.

[0058] When the top temperature remains stable, it may be because the user left the lid open for an extended period, causing the top temperature sensor to be exposed to outside air for a prolonged time. As a result, the sensor's temperature decreases and remains at room temperature. Similarly, because the user left the lid open for so long, both the inner pot and the rice are exposed to outside air, causing their temperatures to decrease and remain at room temperature. In lower ambient temperatures, the rice temperature drops to room temperature more easily. In this situation, it may be impossible to detect whether the lid is closed.

[0059] Therefore, when the top temperature stabilizes below the third preset value, it may be impossible to detect whether the lid is closed. To address this issue, the cooking appliance is controlled to resume heating at a first power. When the top sensor temperature, the inner pot temperature, and the rice temperature all decrease and remain at room temperature, the cooking appliance is in a relatively sealed state when the lid is closed, as the cooking appliance resumes heating at the first power. At this time, both the top temperature and the top temperature of the cooking appliance are rising. Therefore, the presence or absence of a lid can be detected by detecting the top temperature and / or whether the top temperature is rising. Thus, when the top temperature stabilizes below the third preset value, the cooking appliance is controlled to resume heating at the first power. When the lid is detected to be closed again, the cooking appliance is controlled to heat at a heat-preserving power.

[0060] For example, Figure 2 This is a schematic diagram of the structure of an optional cooking appliance according to an embodiment of this application, such as... Figure 2 As shown, the cooking appliance may include a waterproof condensation heating device 22 on the top of the cooking appliance for heating the inner lid 23 to remove condensation on the inner lid. In some other embodiments, it may also be used to directly heat the rice. Figure 3 This is a schematic diagram of the structure of an optional cooking appliance according to an embodiment of this application, such as... Figure 3 As shown, the top heating device may include a waterproof condensation heating device 22 on the top of the cooking appliance for heating the inner cover 23; for example, it is determined whether the top temperature is stable below a third preset value; when the top temperature is stable below the third preset value, the waterproof condensation heating device 22 of the cooking appliance can be controlled to resume heating at a first power.

[0061] As an exemplary embodiment, when the top temperature stabilizes below a third preset value, it is confirmed that the lid is continuously open or the rice is in a cold state.

[0062] When the top temperature remains stable, it may be because the user left the lid open for an extended period, causing the top temperature sensor to be exposed to outside air for a prolonged time. As a result, the sensor's temperature decreases and remains at room temperature. Similarly, because the user left the lid open for so long, both the inner pot and the cooked rice are exposed to outside air, causing both temperatures to decrease and remain at room temperature. When the ambient temperature is low, the cooked rice is more likely to cool to room temperature.

[0063] For example, the third preset value can be any temperature value within the range of ambient temperature plus or minus 2°C.

[0064] As an exemplary embodiment, when the top temperature is not rising, it is determined whether the top temperature is in a continuously decreasing state; when the top temperature is in a continuously decreasing state, the cooking appliance is controlled to resume heating with a second power.

[0065] When the top temperature is decreasing, it indicates that during the process of reaching the predetermined time, there was an opening action, such as adding rice or checking the rice's condition, which resulted in opening the lid. The cooking appliance underwent a lid-closing action after the opening action, and the time point before reaching the predetermined time was still far off. This is because, during the lid-opening action, the top temperature sensor was exposed to the air and dissipated heat to the outside. At this time, the lid-closing action was performed within a short time interval. When the lid was closed, the top temperature was lower than the temperature of the rice and / or the inner pot. After the lid was closed, the temperature of the inner pot and / or the rice would cause the top temperature sensor to rise for a short period of time. However, since there was no heat supply at this time, the rice and the inner pot would continue to dissipate heat after the cooking appliance reached the predetermined time, and the top temperature would continue to decrease.

[0066] Since there is no heat supply at this time, the rice and the inner pot will continue to dissipate heat after the cooking appliance reaches the predetermined time, and the top temperature will be decreasing. There is also the possibility that the lid may not be detected. To address this issue, the cooking appliance is controlled to resume heating at a second power. When the top sensor temperature, the inner pot temperature, and the rice temperature have all decreased and are maintained at room temperature, the cooking cavity of the cooking appliance is in a relatively sealed state when the lid is closed, due to the control of the cooking appliance to resume heating at the second power. At this time, the top temperature and the top temperature of the cooking appliance are both rising. At this time, the cooking appliance can be detected to be in a closed state by detecting the top temperature and / or whether the top temperature is rising. Therefore, when the top temperature stabilizes below the third preset value, the cooking appliance is controlled to resume heating at the second power. When the lid is detected to be closed again, the cooking appliance is controlled to heat at the heat preservation power.

[0067] For example, Figure 2 This is a schematic diagram of the structure of an optional cooking appliance according to an embodiment of this application, such as... Figure 2 As shown, the cooking appliance may include a waterproof condensation heating device 22 on the top of the cooking appliance for heating the inner lid 23 to remove condensation on the inner lid. In some other embodiments, it may also be used to directly heat the rice. Figure 3 This is a schematic diagram of the structure of an optional cooking appliance according to an embodiment of this application, such as... Figure 3As shown, the top heating device may include a waterproof condensation heating device 22 on the top of the cooking appliance for heating the inner cover 23; for example, it is determined whether the top temperature is stable below a third preset value; when the top temperature is stable below the third preset value, the waterproof condensation heating device 22 of the cooking appliance can be controlled to resume heating at a second power.

[0068] As an exemplary embodiment, the first power is greater than the second power.

[0069] As described above, when the top temperature is decreasing, the rice still retains some residual heat; when the top temperature is stable, the rice is in a cold state. Therefore, the first power applied to cold rice is greater than the second power applied to rice with some residual heat.

[0070] As an exemplary embodiment, stopping heating and continuing for a predetermined duration further includes: controlling the cooling device to work continuously for a predetermined duration, and controlling the cooling device to stop heating when the predetermined duration is reached.

[0071] For the above technical solutions, for example, such as Figure 2 As shown, the cooking appliance includes a cooling device 24, which optionally includes a fan and a vent. Since during the heating process, if the bottom temperature exceeds the second preset value, a condensate film may not form between the inner pot and the rice, the heating stop and continue for a predetermined time also includes: controlling the cooling device to work continuously for the predetermined time, and controlling the cooling device to stop heating when the predetermined time is reached, in order to prevent the rice from sticking to the pot if the bottom temperature exceeds the second preset value during the predetermined time.

[0072] Figure 4 This is a structural block diagram of an optional cooking appliance according to an embodiment of this application, wherein the cooking appliance includes at least a rice cooker, an electric pressure cooker, and an IH electric pressure cooker or an IH rice cooker; as shown Figure 4 As shown, it includes a processor 202, a communication interface 204, a memory 206, and a communication bus 208. The processor 202, communication interface 204, and memory 206 communicate with each other via the communication bus 208.

[0073] Memory 206 is used to store computer programs;

[0074] When processor 202 executes a computer program stored in memory 206, it performs the following steps:

[0075] When entering the heat preservation stage, heating is stopped and continues for the predetermined duration;

[0076] After the predetermined time has elapsed, the change in the top temperature is detected.

[0077] When the top temperature is rising, after the top temperature reaches a stable state, it is determined whether to resume heating based on the temperature value of the top temperature.

[0078] Optionally, in this embodiment, the communication bus can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0079] The communication interface is used for communication between the aforementioned computer equipment and other devices.

[0080] The memory may include RAM, or non-volatile memory, such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0081] The processors mentioned above can be general-purpose processors, including but not limited to: CPU (Central Processing Unit), NP (Network Processor), etc.; they can also be DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0082] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0083] Figure 4This does not limit the structure of the cooking appliance described above. Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the cooking appliance. This program can be stored in a computer-readable storage medium, which may include: a flash drive, ROM, RAM, a magnetic disk, or an optical disk, etc.

[0084] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0085] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

[0086] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0087] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for controlling a cooking utensil, characterized in that, The cooking appliance includes a pot body and a pot lid, wherein a top temperature sensor is installed on the pot lid for collecting the top temperature, and the method includes: When entering the heat preservation stage, heating is stopped and continues for the predetermined duration; After the predetermined time has elapsed, the change in the top temperature is detected. When the top temperature is rising, after the top temperature reaches a stable state, it is determined whether to resume heating based on the temperature value of the top temperature.

2. The control method for cooking appliances as described in claim 1, characterized in that, When the top temperature does not rise, control the cooking appliance to resume heating.

3. The control method for cooking appliances as described in claim 1, characterized in that, The determination of whether to resume heating based on the temperature value of the top temperature includes: Determine whether the stabilized top temperature is lower than the first preset value; When the stabilized top temperature is lower than the first preset value, control the cooking appliance to resume heating; When the stabilized top temperature exceeds the first preset value, heating should be stopped.

4. The control method for cooking appliances as described in claim 3, characterized in that, The pot body is equipped with a pot liner, a cooling device, and a bottom temperature sensor for collecting the bottom temperature of the pot body. The step of determining whether to resume heating based on the top temperature value also includes: When the stabilized top temperature is greater than the first preset value, determine whether the bottom temperature is less than the second preset value; When the bottom temperature is lower than the second preset value, heating is stopped until the top temperature is lower than the first preset value, at which point the cooking appliance is controlled to resume heating. When the bottom temperature is greater than the second preset value, heating is stopped, the cooling device is activated to cool the inner pot until the bottom temperature is less than the second preset value, the cooling device is turned off, and the cooking appliance is controlled to resume heating when the top temperature is less than the first preset value.

5. The control method for cooking appliances as described in claim 1, characterized in that, When the top temperature is rising, it is confirmed that the lid is being opened and closed, and the rice inside the pot is hot.

6. The control method for cooking appliances as described in claim 2, characterized in that, When the top temperature is not rising. Determine whether the top temperature is stable below the third preset value; When the top temperature stabilizes below the third preset value, the cooking appliance is controlled to resume heating at the first power.

7. The method for controlling a cooking appliance as described in claim 6, characterized in that, When the top temperature stabilizes below the third preset value, it is confirmed that the lid is continuously open or the rice is in a cold state.

8. The method for controlling a cooking appliance as described in claim 6 or 7, characterized in that, When the top temperature is not rising. Determine whether the top temperature is in a continuous decreasing state; When the top temperature is continuously decreasing, the cooking appliance is controlled to resume heating with a second power.

9. The method for controlling a cooking appliance as described in claim 8, characterized in that, The first power is greater than the second power.

10. The control method for a cooking appliance as described in claim 1, characterized in that, The heating stops and continues for the predetermined duration, which also includes: The cooling device is controlled to work continuously for a predetermined time. When the predetermined time is reached, the cooling device is controlled to stop heating.

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