A protection method for an electric hot plate type cooking appliance and related components

Abstract

The application discloses a kind of electric hot plate type cooking utensil protection method and related components, it is related to cooking utensil control field, first according to the time length required to heat the food in the inner pot of cooking utensil to first preset temperature value Determine protection time length, then according to current pot bottom temperature Adjust the working power of heating device, and current pot bottom temperature and working power are negatively correlated, by reducing working power Avoid when electric hot plate and inner pot contact problem due to excessive heat accumulation of electric hot plate to cooking utensil caused by damage. And by controlling heating device to work with working power to maintain the pot bottom temperature at second preset temperature value and continue protection time length, ensure that food can be normally cooked.

Description

Technical Field

[0001] This invention relates to the field of cooking appliances, and in particular to a method for protecting an electric heating plate type cooking appliance and related components. Background Technology

[0002] Commonly used cooking appliances, such as electric pressure cookers, typically include a heating element, a heating plate, and an inner pot. The heating element heats the heating plate, which then transfers heat to the food in the inner pot to complete the cooking process. In practical applications, problems may arise with poor contact between the heating plate and the inner pot. For example, foreign objects may be present between them, or the inner pot may become stuck, preventing a tight connection between it and the heating plate. In such cases, poor contact prevents the heat from the heating plate from being released quickly, forcing it to radiate to surrounding surfaces through the air. As heat accumulates on the heating plate, it may malfunction, preventing the appliance from cooking properly. Summary of the Invention

[0003] The purpose of this invention is to provide a protection method and related components for electric heating plate type cooking appliances, so as to avoid the problem of damage to the cooking appliance caused by excessive heat from the electric heating plate when the electric heating plate and the inner pot have poor contact, and to ensure that the food can be cooked normally.

[0004] To solve the above-mentioned technical problems, the present invention provides a method for protecting an electric heating plate type cooking appliance, comprising:

[0005] The protection duration is determined based on the time required to heat the food in the inner pot of the cooking appliance to a first preset temperature value;

[0006] After determining the protection duration, the working power of the heating device in the cooking appliance is adjusted according to the current bottom temperature of the inner pot, and the heating device is controlled to work continuously at the working power until the current bottom temperature rises to a second preset temperature value, at which point the heating device is controlled to stop working, wherein the current bottom temperature is negatively correlated with the working power;

[0007] If the actual duration for which the heating device operates at the specified power does not reach the protection duration, the process proceeds to the step of adjusting the operating power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot.

[0008] Preferably, the protection duration is determined based on the time required to heat the food in the inner pot of the cooking appliance to a first preset temperature value, including:

[0009] The heating device is controlled to operate at a first preset power.

[0010] Determine whether the temperature of the bottom of the inner pot is greater than the first preset temperature value;

[0011] When the temperature at the bottom of the pot is not greater than the first preset temperature value, the step of controlling the heating device to operate at the first preset power is entered.

[0012] When the temperature at the bottom of the pot is greater than the first preset temperature value, determine the total duration for which the heating device operates at the first preset power.

[0013] Determine the preset duration range within which the total duration falls, and determine the protection duration based on the correspondence between the preset duration range and the protection duration.

[0014] Preferably, before controlling the heating device to operate at a first preset power, the method further includes:

[0015] Determine whether the temperature of the bottom of the inner pot is greater than a third preset temperature value;

[0016] If the temperature of the bottom of the pot is not greater than the third preset temperature value, then proceed to the step of controlling the heating device to operate at the first preset power.

[0017] If the temperature of the bottom of the pot is greater than the third preset temperature value, the heating device is controlled to work at the second preset power, and the process proceeds to the step of determining whether the temperature of the bottom of the inner pot is greater than the first preset temperature value, and the third preset temperature value is less than the first preset temperature value, and the second preset power is less than the first preset power.

[0018] Preferably, after controlling the heating device to operate continuously at the operating power, the method further includes:

[0019] When the current pot bottom temperature is not greater than the second preset temperature value, determine whether a pressure action signal sent by the pressure detection device in the cooking appliance is received and whether the current pot bottom temperature is greater than the fourth preset temperature value.

[0020] If the pressure action signal is received and the current pot bottom temperature is greater than the fourth preset temperature value, then the cooking appliance is controlled to enter the pressure-holding cooking mode.

[0021] Otherwise, proceed to the step of adjusting the operating power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot.

[0022] Preferably, after the actual duration for which the heating device operates at the said operating power has not reached the protection duration, the method further includes:

[0023] Detect whether a pressure action signal is received from the pressure detection device in the cooking appliance;

[0024] If the pressure action signal is detected, the cooking appliance is controlled to enter the pressure-holding cooking mode;

[0025] If the pressure action signal is not detected, the process proceeds to the step of adjusting the operating power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot.

[0026] Preferably, after controlling the heating device to stop working, the method further includes:

[0027] When the actual duration reaches the protection duration, the heating device is controlled to start working at a third preset power.

[0028] When the current bottom temperature of the inner pot reaches the preset pressure-holding switching temperature value, the cooking appliance is controlled to enter the pressure-holding cooking mode.

[0029] When the current bottom temperature of the inner pot has not reached the preset pressure holding switching temperature value, determine whether a pressure action signal sent by the pressure detection device in the cooking appliance has been received;

[0030] If the pressure action signal is received, the cooking appliance is controlled to enter the pressure-holding cooking mode;

[0031] If the pressure action signal is not received, the process proceeds to the step of controlling the heating device to start working at a third preset power.

[0032] This application also provides a protection system for an electric heating plate type cooking appliance, including:

[0033] The protection duration determination unit is used to determine the protection duration based on the time required to heat the food in the inner pot of the cooking appliance to a first preset temperature value;

[0034] The first control unit is configured to, after determining the protection duration, adjust the working power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot, and control the heating device to continue working at the working power until the current bottom temperature rises to a second preset temperature value, and then control the heating device to stop working, wherein the current bottom temperature is negatively correlated with the working power;

[0035] The second control unit is configured to, when the actual duration for which the heating device operates at the specified power does not reach the protection duration, proceed to the step of adjusting the operating power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot.

[0036] This application also provides a protective device for an electric heating plate type cooking appliance, including:

[0037] Memory, used to store computer programs;

[0038] A processor is configured to implement the steps of the above-described method for protecting a heating plate-type cooking appliance when executing the computer program.

[0039] This application also provides a cooking appliance, including the protective device for the above-mentioned electric heating plate type cooking appliance, and further including an electric heating plate, a heating device, and an inner pot.

[0040] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the protection method for the electric heating plate type cooking appliance described above.

[0041] In summary, this invention discloses a protection method and related components for an electric heating plate type cooking appliance. First, the protection duration is determined based on the time required to heat the food in the inner pot of the cooking appliance to a first preset temperature value. Then, the operating power of the heating device is adjusted according to the current pot bottom temperature, and the current pot bottom temperature is negatively correlated with the operating power. By reducing the operating power, the problem of damage to the cooking appliance caused by overheating of the heating plate due to poor contact between the heating plate and the inner pot is avoided. Furthermore, the heating device controls the pot bottom temperature to maintain a second preset temperature value and continues the protection duration, ensuring that the food can be cooked normally. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 A flowchart illustrating a method for protecting an electric heating plate type cooking appliance provided by the present invention;

[0044] Figure 2 Another flowchart of a method for protecting an electric heating plate type cooking appliance provided by the present invention;

[0045] Figure 3 A schematic diagram of the structure of a protection system for an electric heating plate type cooking appliance provided by the present invention;

[0046] Figure 4 This is a schematic diagram of the structure of a protective device for an electric heating plate type cooking appliance provided by the present invention. Detailed Implementation

[0047] The core of this invention is to provide a protection method and related components for electric heating plate type cooking appliances, so as to avoid the problem of damage to the cooking appliance caused by excessive heat from the electric heating plate when the electric heating plate and the inner pot have poor contact, and to ensure that the food can be cooked normally.

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Please refer to Figure 1 , Figure 1 A flowchart of a method for protecting an electric heating plate type cooking appliance provided by the present invention, the method comprising:

[0050] S1: Determine the protection duration based on the time required to heat the food in the inner pot of the cooking appliance to a first preset temperature value;

[0051] S2: After determining the protection duration, adjust the working power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot, and control the heating device to work continuously at the working power until the current bottom temperature rises to the second preset temperature value, and then control the heating device to stop working. The current bottom temperature is negatively correlated with the working power.

[0052] S3: If the actual duration of operation of the heating device at its working power has not reached the protection time, proceed to the step of adjusting the working power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot.

[0053] In practical applications, when a cooking appliance experiences poor contact between the heating plate and the inner pot, the heating plate may malfunction, preventing the appliance from cooking normally. Considering that existing technologies make it difficult to directly detect whether there is a problem with poor contact between the heating plate and the inner pot, this embodiment provides a protection method for heating plate-type cooking appliances. When the cooking appliance is cooking according to the working process provided in this application, even if there is a problem with poor contact between the heating plate and the inner pot, damage to the heating plate can be avoided to the greatest extent, while ensuring that the food can be cooked normally.

[0054] Specifically, the time required to heat food to the first preset temperature value varies depending on the weight or volume of the food. Generally, the weight and volume of the food are positively correlated with the time required to heat it to the first preset temperature value. The greater the weight or volume of the food, the longer the protection time required by this application. Therefore, in this application, the protection time is first determined based on the time required to heat the food in the inner pot of the cooking appliance to the first preset temperature value. This application does not impose any special limitation on the specific value of the first preset temperature value, which can be set according to the actual situation.

[0055] After determining the protection duration, the operating power of the heating device in the cooking appliance is adjusted according to the current bottom temperature of the inner pot. To prevent damage to the heating plate due to heat accumulation, the operating power of the heating device needs to be reduced in advance. Therefore, the higher the current bottom temperature, the lower the operating power of the heating device; that is, the current bottom temperature and the operating power are negatively correlated. Furthermore, to ensure the food in the inner pot can be cooked properly, this application controls the heating device to operate continuously at its operating power until the current bottom temperature rises to a second preset temperature value, at which point the heating device stops operating. If the actual duration of operation at operating power is less than the protection duration, the cooking appliance needs to be maintained at the second preset temperature value. Therefore, the operating power of the heating device in the cooking appliance needs to be adjusted again according to the current bottom temperature of the inner pot. This application does not specifically limit the steps after the actual duration of operation at operating power reaches the protection duration. At this point, the cooking appliance is relatively safe, so the heating device can be controlled to operate at a relatively low power to complete subsequent cooking tasks.

[0056] In summary, this invention discloses a protection method for an electric heating plate type cooking appliance. First, the protection duration is determined based on the time required to heat the food in the inner pot to a first preset temperature value. Then, the operating power of the heating device is adjusted according to the current pot bottom temperature, and the current pot bottom temperature is negatively correlated with the operating power. By reducing the operating power, the problem of damage to the cooking appliance due to overheating of the heating plate when there is poor contact between the heating plate and the inner pot is avoided. Furthermore, the heating device controls the pot bottom temperature to maintain a second preset temperature value and continues the protection for the specified duration, ensuring that the food can be cooked normally.

[0057] Based on the above embodiments:

[0058] As a preferred embodiment, the protection duration is determined based on the time required to heat the food in the inner pot of the cooking appliance to a first preset temperature value, including:

[0059] The heating device is controlled to operate at a first preset power.

[0060] Determine whether the temperature of the bottom of the inner pot is greater than the first preset temperature value;

[0061] When the temperature at the bottom of the pot is not greater than the first preset temperature value, the step of controlling the heating device to work at the first preset power is entered.

[0062] When the temperature at the bottom of the pot is greater than the first preset temperature value, determine the total duration for which the heating device operates at the first preset power.

[0063] Determine the preset duration range within which the total duration falls, and determine the protection duration based on the correspondence between the preset duration range and the protection duration.

[0064] In this embodiment, the specific process for determining the protection duration is as follows: First, the heating device is controlled to operate at a first preset power. This application does not specifically limit the value of the first preset power; for example, it can be set to more than 80% of the rated power of the cooking appliance, thereby accelerating the determination of the protection duration. During the process of controlling the heating device to operate at the first preset power, the temperature of the pot bottom is detected in real time or periodically, and it is determined whether the pot bottom temperature is greater than the first preset temperature value. If the pot bottom temperature has not reached the first preset temperature value, the heating device continues to operate at the first preset power. When the pot bottom temperature reaches a second preset temperature value, the total duration of the heating device operating at the first preset power is determined. This application pre-sets a correspondence between preset duration ranges and protection durations. Therefore, after determining the total duration, the preset duration range within which the total duration falls is determined. Then, the correspondence between the preset duration range and the protection duration is used to determine the protection duration corresponding to the total duration. The determination method is simple and accurate.

[0065] As a preferred embodiment, before controlling the heating device to operate at a first preset power, the method further includes:

[0066] Determine if the temperature of the bottom of the inner pot is greater than the third preset temperature value;

[0067] If the temperature of the bottom of the pot is not greater than the third preset temperature value, then proceed to the step of controlling the heating device to work at the first preset power.

[0068] If the temperature of the bottom of the pot is greater than the third preset temperature value, the heating device is controlled to work at the second preset power, and the process proceeds to the step of determining whether the temperature of the bottom of the inner pot is greater than the first preset temperature value, and the third preset temperature value is less than the first preset temperature value, and the second preset power is less than the first preset power.

[0069] Please refer to Figure 2 , Figure 2This is another flowchart illustrating a method for protecting an electric heating plate type cooking appliance provided by the present invention. In this embodiment, to further reduce the possibility of damage to the heating plate due to poor contact between the heating plate and the inner pot, the heating power of the heating device is reduced in advance to prevent the thermal inertia of the heating plate from becoming too high. Specifically, before controlling the heating device to operate at a first preset power, it is first determined whether the temperature of the bottom of the inner pot is greater than a third preset temperature value. If the temperature of the bottom of the pot is not greater than the third preset temperature value, the heating device still operates at the first preset power; if the temperature of the bottom of the pot is greater than the third preset temperature value, the heating device is controlled to operate at a second preset power, which is less than the first preset power. That is, the power of the heating device is reduced in advance when the temperature of the bottom of the pot is too high, so that the temperature of the heating plate will not be too high, ensuring the safety of the heating plate and the cooking appliance as a whole.

[0070] It should be noted that, since the working power of the heating device is flexibly adjusted in this embodiment, it is necessary to determine the total working time of the heating device at the first preset power and the second preset power when determining the total working time of the heating device.

[0071] In a preferred embodiment, after controlling the heating device to operate continuously at the operating power, the method further includes:

[0072] When the current pot bottom temperature is not greater than the second preset temperature value, determine whether a pressure action signal sent by the pressure detection device in the cooking appliance is received and whether the current pot bottom temperature is greater than the fourth preset temperature value.

[0073] If a pressure action signal is received and the current temperature of the pot bottom is greater than the fourth preset temperature value, the cooking appliance will be controlled to enter the pressure-holding cooking mode.

[0074] Otherwise, proceed to the step of adjusting the operating power of the heating element in the cooking appliance according to the current bottom temperature of the inner pot.

[0075] Please refer to Figure 2 , Figure 2This invention provides another flowchart of a protection method for an electric heating plate type cooking appliance. In this embodiment, considering that the heating device's operating power is usually very low or even stops working when the cooking appliance enters the pressure-holding cooking mode, if the cooking appliance is detected to have met the conditions for entering the pressure-holding cooking mode during cooking, it can be controlled to enter this mode. The conditions for entering the pressure-holding cooking mode typically include three aspects: whether the temperature is high enough, whether the heating time is long enough, and whether the pressure detection device in the cooking appliance generates a pressure action signal. The first two aspects are to ensure that the heating plate is not damaged due to excessive heat accumulation. In this embodiment, since the current pot bottom temperature is not greater than a second preset temperature value, entering the pressure-holding cooking mode requires considering whether a pressure action signal is received and whether the temperature is high enough. If a pressure action signal is received from the pressure detection device and the pot bottom temperature is already relatively high, the cooking appliance can be directly controlled to enter the pressure-holding cooking mode. This ensures that the food can be cooked normally while avoiding the risk of excessive heat accumulation in the heating plate. It should also be noted that the pressure detection device in this application can be installed on the lid or bottom of the cooking appliance to detect the pressure inside the cooking appliance.

[0076] In this embodiment, since the current pot bottom temperature is not greater than the second preset temperature value, it is necessary to further determine whether the current pot bottom temperature is greater than the fourth preset temperature value when determining whether to enter the pressure-holding cooking mode. Therefore, the determination condition in this embodiment is whether a pressure action signal is received from the pressure detection device in the cooking appliance and whether the current pot bottom temperature is greater than the fourth preset temperature value. If a pressure action signal is received and the current pot bottom temperature is greater than the fourth preset temperature value, it indicates that the conditions for entering the pressure-holding cooking mode are met. Therefore, the cooking appliance is controlled to enter the pressure-holding cooking mode to ensure that the food can be cooked normally while reducing the possibility of damage to the heating plate. Otherwise, it indicates that the conditions for entering the pressure-holding cooking mode are not met. Therefore, the step of adjusting the working power of the heating device in the cooking appliance according to the current pot bottom temperature is entered to further heat the food in the cooking appliance.

[0077] As a preferred embodiment, after the actual duration of operation of the heating device at its operating power has not reached the protection time, the following further step is taken:

[0078] Detect whether a pressure action signal is received from the pressure detection device in the cooking appliance;

[0079] If a pressure action signal is detected, the cooking appliance will be controlled to enter the pressure-holding cooking mode;

[0080] If no pressure action signal is detected, proceed to the step of adjusting the operating power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot.

[0081] Please refer to Figure 2 , Figure 2 This is another flowchart illustrating a protection method for an electric heating plate type cooking appliance provided by the present invention. In this embodiment, since the pot bottom temperature has already reached the second preset temperature value, the cooking appliance can be controlled to enter the pressure-holding cooking mode as long as a pressure action signal sent by the pressure detection device is received after the actual duration of the heating device operating at its working power has not reached the protection time. This ensures that the normal cooking requirements for food are met while avoiding the possibility of damage to the cooking appliance due to heat accumulation from the heating plate when the heating plate and the inner pot are not in complete contact. If no pressure action signal is received, the working power of the heating device is adjusted again according to the current pot bottom temperature to further heat the food in the cooking appliance.

[0082] It should also be noted that when a cooking appliance enters the pressure-holding cooking mode, the internal temperature and pressure of the appliance are already high enough. Therefore, once the appliance enters the pressure-holding cooking mode, it is only necessary to heat the food with very low power or stop heating the food directly to maintain the internal pressure of the appliance at the pressure when it entered the pressure-holding cooking mode. Thus, the appliance is relatively safe once it enters the pressure-holding cooking mode, and no further intervention is required in the cooking process.

[0083] In a preferred embodiment, after the heating device stops operating, the following is also included:

[0084] When the actual duration reaches the protection duration, the heating device is controlled to start working at the third preset power.

[0085] When the current bottom temperature of the inner pot reaches the preset pressure-holding switching temperature value, the cooking appliance is controlled to enter the pressure-holding cooking mode.

[0086] When the current bottom temperature of the inner pot has not reached the preset pressure holding switching temperature value, determine whether a pressure action signal sent by the pressure detection device in the cooking appliance has been received.

[0087] If a pressure action signal is received, the cooking appliance will be controlled to enter the pressure-holding cooking mode;

[0088] If no pressure action signal is received, proceed to the step of controlling the heating device to start working at the third preset power.

[0089] Considering that when there is a lot of food in the cooking appliance, simply controlling the temperature of the bottom of the pot to the second preset temperature value and continuing to keep it warm for a certain period of time is not enough to completely cook the food, that is, when there is a lot of food, the cooking appliance may not meet the conditions for entering the pressure cooking mode. Therefore, it is necessary to use a heating device to continue heating the food.

[0090] Please refer to Figure 2 , Figure 2This invention provides another flowchart of a protection method for an electric heating plate type cooking appliance. Specifically, when the heating device has stopped working and the actual duration has reached the protection time, but no pressure action signal has been received from the pressure detection device, the heating device is controlled to start working at a third preset power to increase the pressure inside the cooking appliance and the temperature of the food inside the cooking appliance. Entering the pressure-holding cooking mode usually requires meeting corresponding conditions in terms of time, temperature, or pressure. Specifically, when the current bottom temperature of the inner pot reaches the preset pressure-holding switching temperature value, the cooking appliance is directly controlled to enter the pressure-holding cooking mode; when the current bottom temperature of the inner pot has not reached the preset pressure-holding switching temperature value, it is necessary to further determine whether a pressure action signal has been received from the pressure detection device in the cooking appliance. If a pressure action signal is received, the cooking appliance is controlled to enter the pressure-holding cooking mode; if no pressure action signal is received, it is necessary to continue heating the food, therefore, the step of controlling the heating device to start working at the third preset power is required. It should be noted that the pressure detection device in this application only generates a pressure action signal when it detects that the pressure in the inner pot of the cooking appliance reaches a preset range. This application does not specifically limit the value of the preset range. In summary, this embodiment replenishes the food in the cooking appliance, avoiding damage to the appliance due to poor contact between the heating plate and the inner pot while ensuring that the food is cooked normally.

[0091] Please refer to Figure 3 , Figure 3 This invention provides a structural schematic diagram of a protection system for an electric heating plate type cooking appliance. The system includes:

[0092] The protection duration determination unit 11 is used to determine the protection duration based on the time required to heat the food in the inner pot of the cooking appliance to a first preset temperature value.

[0093] The first control unit 12 is used to adjust the working power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot after determining the protection duration, and control the heating device to work continuously at the working power until the current bottom temperature rises to the second preset temperature value, and then control the heating device to stop working, wherein the current bottom temperature is negatively correlated with the working power.

[0094] The second control unit 13 is configured to, when the actual duration of operation of the heating device at its operating power has not reached the protection duration, proceed to the step of adjusting the operating power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot.

[0095] For a detailed description of the protection system for an electric heating plate type cooking appliance provided in this application, please refer to the embodiments of the protection method for electric heating plate type cooking appliances; this application will not repeat the details here.

[0096] Based on the above embodiments:

[0097] As a preferred embodiment, the protection duration determination unit 11 includes:

[0098] The third control unit is used to control the heating device to operate at a first preset power.

[0099] The first judgment unit is used to determine whether the temperature of the bottom of the inner pot is greater than the first preset temperature value; if not, the third control unit is triggered; if so, the total duration determination unit is triggered.

[0100] A total duration determination unit is used to determine the total duration for which the heating device operates at the first preset power.

[0101] The protection duration determination subunit is used to determine the preset duration range in which the total duration falls, and to determine the protection duration based on the correspondence between the preset duration range and the protection duration.

[0102] As a preferred embodiment, it also includes:

[0103] The second judgment unit is used to determine whether the bottom temperature of the inner pot is greater than a third preset temperature value before controlling the heating device to work at a first preset power; if not, the third control unit is triggered; if so, the fourth control unit is triggered.

[0104] The fourth control unit is used to control the heating device to operate at a second preset power and trigger the first judgment unit, wherein the second preset power is less than the first preset power.

[0105] As a preferred embodiment, it also includes:

[0106] The third judgment unit is used to determine, after controlling the heating device to work continuously at the working power, whether a pressure action signal sent by the pressure detection device in the cooking appliance is received and whether the current pot bottom temperature is greater than the fourth preset temperature value when the current pot bottom temperature is not greater than the second preset temperature value; if the pressure action signal is received and the current pot bottom temperature is greater than the fourth preset temperature value, the first pressure-holding cooking unit is triggered; otherwise, the first control unit 12 is triggered.

[0107] The first pressure-holding cooking unit is used to control the cooking appliance to enter the pressure-holding cooking mode.

[0108] As a preferred embodiment, it also includes:

[0109] The fourth judgment unit is used to detect whether a pressure action signal sent by the pressure detection device in the cooking appliance is received after the actual duration of operation of the heating device at the working power has not reached the protection duration; if the pressure action signal is detected, the second pressure-holding cooking unit is triggered; otherwise, the first control unit 12 is triggered.

[0110] The second pressure-holding cooking unit is used to control the cooking appliance to enter the pressure-holding cooking mode.

[0111] As a preferred embodiment, it also includes:

[0112] The fifth control unit is used to control the heating device to start working at a third preset power when the actual duration reaches the protection duration after the heating device has stopped working.

[0113] The third pressure-holding cooking unit is used to control the cooking appliance to enter the pressure-holding cooking mode when the current bottom temperature of the inner pot reaches the preset pressure-holding switching temperature value.

[0114] The fifth judgment unit is used to determine whether a pressure action signal sent by the pressure detection device in the cooking appliance is received when the current bottom temperature of the inner pot has not reached the preset pressure holding switching temperature value; if the pressure action signal is received, the fourth pressure holding cooking unit is triggered; if the pressure action signal is not received, the fifth control unit is triggered.

[0115] The fourth pressure-holding cooking unit is used to control the cooking appliance to enter the pressure-holding cooking mode.

[0116] Please refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of a protective device for an electric heating plate type cooking appliance provided by the present invention. The device includes:

[0117] Memory 21 is used to store computer programs;

[0118] The processor 22 is used to implement the steps of the above-described method for protecting the electric heating plate type cooking appliance when executing a computer program.

[0119] For a description of the protective device for an electric heating plate type cooking appliance provided in this application, please refer to the embodiments of the protective method for an electric heating plate type cooking appliance; this application will not repeat the details here.

[0120] This application also provides a cooking appliance, including the protective device for the above-mentioned electric heating plate type cooking appliance, and further including an electric heating plate, a heating device, and an inner pot.

[0121] For a description of the cooking appliance provided in this application, please refer to the embodiment of the protection method for electric heating plate type cooking appliances, which will not be repeated here.

[0122] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the protection method for the electric heating plate type cooking appliance described above.

[0123] For a description of the computer-readable storage medium provided in this application, please refer to the embodiments of the protection method for electric heating plate type cooking appliances, which will not be repeated here.

[0124] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0125] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0126] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0127] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for protecting an electric heating plate type cooking appliance, characterized in that, include: The protection duration is determined based on the time required to heat the food in the inner pot of the cooking appliance to a first preset temperature value; After determining the protection duration, the working power of the heating device in the cooking appliance is adjusted according to the current bottom temperature of the inner pot, and the heating device is controlled to work continuously at the working power until the current bottom temperature rises to a second preset temperature value, at which point the heating device is controlled to stop working, wherein the current bottom temperature is negatively correlated with the working power; If the actual duration for which the heating device operates at the specified power does not reach the protection duration, the process proceeds to the step of adjusting the operating power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot. The step of determining the protection duration based on the time required to heat the food in the inner pot of the cooking appliance to a first preset temperature value includes: The heating device is controlled to operate at a first preset power. Determine whether the temperature of the bottom of the inner pot is greater than the first preset temperature value; When the temperature at the bottom of the pot is not greater than the first preset temperature value, the step of controlling the heating device to operate at the first preset power is entered. When the temperature at the bottom of the pot is greater than the first preset temperature value, determine the total duration for which the heating device operates at the first preset power. Determine the preset duration range within which the total duration falls, and determine the protection duration based on the correspondence between the preset duration range and the protection duration.

2. The method for protecting an electric heating plate type cooking appliance as described in claim 1, characterized in that, Before controlling the heating device to operate at a first preset power, the method further includes: Determine whether the temperature of the bottom of the inner pot is greater than a third preset temperature value; If the temperature of the bottom of the pot is not greater than the third preset temperature value, then proceed to the step of controlling the heating device to operate at the first preset power. If the temperature of the bottom of the pot is greater than the third preset temperature value, the heating device is controlled to work at the second preset power, and the process proceeds to the step of determining whether the temperature of the bottom of the inner pot is greater than the first preset temperature value, and the third preset temperature value is less than the first preset temperature value, and the second preset power is less than the first preset power.

3. The method for protecting an electric heating plate type cooking appliance as described in claim 1, characterized in that, After controlling the heating device to operate continuously at the operating power, the method further includes: When the current pot bottom temperature is not greater than the second preset temperature value, determine whether a pressure action signal sent by the pressure detection device in the cooking appliance is received and whether the current pot bottom temperature is greater than the fourth preset temperature value. If the pressure action signal is received and the current pot bottom temperature is greater than the fourth preset temperature value, then the cooking appliance is controlled to enter the pressure-holding cooking mode. Otherwise, proceed to the step of adjusting the operating power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot.

4. The method for protecting an electric heating plate type cooking appliance as described in claim 1, characterized in that, After the actual duration for which the heating device operates at the stated operating power has not reached the protection duration, the following further steps are included: Detect whether a pressure action signal is received from the pressure detection device in the cooking appliance; If the pressure action signal is detected, the cooking appliance is controlled to enter the pressure-holding cooking mode; If the pressure action signal is not detected, the process proceeds to the step of adjusting the operating power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot.

5. The method for protecting an electric heating plate type cooking appliance as described in any one of claims 1 to 4, characterized in that, After controlling the heating device to stop working, the following is also included: When the actual duration reaches the protection duration, the heating device is controlled to start working at a third preset power. When the current bottom temperature of the inner pot reaches the preset pressure-holding switching temperature value, the cooking appliance is controlled to enter the pressure-holding cooking mode. When the current bottom temperature of the inner pot has not reached the preset pressure holding switching temperature value, determine whether a pressure action signal sent by the pressure detection device in the cooking appliance has been received; If the pressure action signal is received, the cooking appliance is controlled to enter the pressure-holding cooking mode; If the pressure action signal is not received, the process proceeds to the step of controlling the heating device to start working at a third preset power.

6. A protection system for an electric heating plate type cooking appliance, characterized in that, include: The protection duration determination unit is used to determine the protection duration based on the time required to heat the food in the inner pot of the cooking appliance to a first preset temperature value; The first control unit is configured to, after determining the protection duration, adjust the working power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot, and control the heating device to continue working at the working power until the current bottom temperature rises to a second preset temperature value, and then control the heating device to stop working, wherein the current bottom temperature is negatively correlated with the working power; The second control unit is configured to, when the actual duration for which the heating device operates at the specified power does not reach the protection duration, proceed to the step of adjusting the operating power of the heating device in the cooking appliance according to the current bottom temperature of the inner pot. The protection duration determination unit is specifically used for: controlling the heating device to operate at a first preset power; determining whether the bottom temperature of the inner pot is greater than the first preset temperature value; when the bottom temperature is not greater than the first preset temperature value, proceeding to the step of controlling the heating device to operate at the first preset power; when the bottom temperature is greater than the first preset temperature value, determining the total duration for which the heating device operates at the first preset power; determining the preset duration range in which the total duration falls, and determining the protection duration based on the correspondence between the preset duration range and the protection duration.

7. A protective device for an electric heating plate type cooking appliance, characterized in that, include: Memory, used to store computer programs; A processor, configured to implement the steps of the protection method for an electric heating plate type cooking appliance as described in any one of claims 1 to 5 when executing the computer program.

8. A cooking utensil, characterized in that, The protective device for the electric heating plate type cooking appliance as described in claim 7 also includes the electric heating plate, the heating device, and the inner pot.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the protection method for the electric heating plate type cooking appliance as described in any one of claims 1 to 5.

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