Cooking utensil control method and cooking utensil

Abstract

The invention discloses a control method of a cooking utensil and the cooking utensil, the cooking utensil comprises a cooking space, a heating device and a temperature sensor, the heating device is configured to be a heating disc, and the cooking process of the cooking utensil comprises a boiling stage. The control method comprises the following steps: enabling the boiling stage to comprise a plurality of working sections; recording the temperature detected by the temperature sensor at the beginning of each working section as an initial temperature, and recording the temperature detected by the temperature sensor at the end of each working section as an end temperature; and after each working section ends, the heating power of the heating device is adjusted according to the relation between the difference value d between the end temperature and the initial temperature in each working section and the preset rising temperature. The heating power of the heating device is adjusted according to the temperature difference before and after each working section, the heating power is dynamically adjusted, the heating efficiency can be considered, and overflowing can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of cooking appliances, and more particularly to a control method for a cooking appliance and a cooking appliance adopting the method. Background Art

[0002] When the current cooking appliance uses a heating plate for heating, since the heating plate has a heat storage function, if a large amount of heat is stored when approaching boiling, it is easy to cause the phenomenon of overflowing the pot. In order to take into account different altitude regions (the boiling temperature points are different), generally after heating to a predetermined temperature (less than the boiling point of the highest altitude region that can be compatible), continue to heat with a low power so that the overflowing phenomenon will not occur during the cooking process. However, it takes a long time to heat to boiling with low power (especially when cooking a large amount of food). Therefore, a lot of time is wasted during the cooking process, which gives the user an experience of slow cooking, reduces the user experience, and the cooking effect is also not good, reducing the user experience.

[0003] Therefore, a control method for a cooking appliance and a cooking appliance are needed to at least partially solve the above problems. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further detailed in the Detailed Description section. The Summary of the Invention section of the present application does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, in a first aspect of the present application, a control method for a cooking appliance is provided. The cooking appliance includes a cooking space for holding food, a heating device for heating the cooking space, and a temperature sensor for detecting the temperature of the cooking space. The heating device is configured as a heating plate. The cooking process of the cooking appliance includes a pre-boiling stage for heating the food in the cooking space to a boiling or near-boiling state. The control method includes:

[0006] Making the pre-boiling stage include a plurality of working sections;

[0007] Recording the temperature detected by the temperature sensor at the start of each working section as the initial temperature, and recording the temperature detected by the temperature sensor at the end of each working section as the end temperature;

[0008] After the end of each working section, adjust the heating power of the heating device according to the relationship between the difference d between the end temperature and the initial temperature in each working section and a preset rising temperature.

[0009] According to the present application, the heating power of the heating plate is adjusted according to the temperature difference before and after each working section. Dynamically adjusting the heating power can ensure the heating efficiency, and at the same time effectively control the duration of the entire cooking process while avoiding the situation of the heating plate storing a large amount of heat and causing the pot to overflow, improving the user experience.

[0010] Optionally, adjusting the heating power of the heating device according to the relationship between the difference d between the end temperature and the initial temperature in each working section and the preset rising temperature includes:

[0011] When the difference d is less than the preset rising temperature, increase the heating power; when the difference d is greater than the preset rising temperature, decrease the heating power; when the difference d is equal to the preset rising temperature, keep the heating power unchanged, or

[0012] When the difference d is less than the product of the preset rising temperature and the first ratio, increase the heating power; when the difference d is greater than the product of the preset rising temperature and the second ratio, decrease the heating power; when the difference d is greater than or equal to the product of the preset rising temperature and the first ratio and less than or equal to the product of the preset rising temperature and the second ratio, keep the heating power unchanged.

[0013] According to the present application, when the difference d is less than the preset rising temperature or less than the product of the preset rising temperature and the first ratio, the temperature rises slowly, so the power needs to be reasonably increased; when the difference d is greater than the preset rising temperature or greater than the product of the preset rising temperature and the second ratio, the temperature rises quickly, so the power needs to be reasonably decreased; when the difference d is equal to the preset rising temperature or is between the product of the preset rising temperature and the first ratio and the product of the preset rising temperature and the second ratio, the temperature rises at a proper speed and there is no need to adjust the heating power. The power adjustment method is reasonable and can balance the heating efficiency and avoid pot overflow.

[0014] Optionally, adjusting the heating power of the heating device according to the relationship between the difference d between the end temperature and the initial temperature in each working section and the preset rising temperature includes: when the difference d is less than the preset rising temperature:

[0015] Set a plurality of consecutive rising percentage intervals,

[0016] Set a power rising percentage corresponding to each of the rising percentage intervals,

[0017] Calculate the quotient value en1 obtained by dividing the difference between the preset rising temperature and the difference d by the preset rising temperature,

[0018] Determine the ascending percentage interval A in which the quotient en1 is located among the multiple ascending percentage intervals.

[0019] Determine the power increase percentage b corresponding to the ascending percentage interval A.

[0020] Make the adjusted heating power the product of the heating power before adjustment and the sum of 1 and b.

[0021] According to the present application, when the difference d is less than the preset rising temperature, there is a clear calculation method for adjusting the heating power, and the control method is simple.

[0022] Optionally, the ascending percentage interval includes a first ascending percentage interval, which is (0, 10%), and the power increase percentage corresponding to the first ascending percentage interval is 0%.

[0023] The ascending percentage interval includes a second ascending percentage interval, which is [10%, 20%], and the power increase percentage corresponding to the second ascending percentage interval is [10%, 20%].

[0024] The ascending percentage interval includes a third ascending percentage interval, which is (20%, 40%], and the power increase percentage corresponding to the third ascending percentage interval is [20%, 40%].

[0025] The ascending percentage interval includes a fourth ascending percentage interval, which is (40%, +∞), and the power increase percentage corresponding to the fourth ascending percentage interval is [45%, 70%].

[0026] According to the present application, the values of the power increase percentage and the ascending percentage interval are clear and reasonable.

[0027] Optionally, the larger the value of the ascending percentage interval, the larger the power increase percentage corresponding to the ascending percentage interval.

[0028] According to the present application, there is a clear corresponding relationship between the power increase percentage and the ascending percentage interval. The more insufficient the temperature rise, the more the power is increased to ensure the heating efficiency.

[0029] Optionally, adjusting the heating power of the heating device according to the relationship between the difference d between the end temperature and the initial temperature in each working section and the preset rising temperature includes: when the difference d is greater than the preset rising temperature:

[0030] Set a plurality of consecutive descending percentage intervals.

[0031] Set a power reduction percentage corresponding to each of the said percentage reduction intervals.

[0032] Calculate the quotient value en2 which is the difference between the said difference d minus the preset temperature rise divided by the preset temperature rise.

[0033] Determine the percentage reduction interval C in which the quotient value en2 is located among the multiple said percentage reduction intervals.

[0034] Determine the power reduction percentage d corresponding to the percentage reduction interval C.

[0035] Make the adjusted heating power the product of the heating power before adjustment and the difference between 1 and d.

[0036] According to the present application, when the difference d is greater than the preset temperature rise, there is a clear calculation method for adjusting the heating power. The control method is simple.

[0037] Optionally,

[0038] The said percentage reduction interval includes a first percentage reduction interval, and the first percentage reduction interval is (0, 10%), and the power reduction percentage corresponding to the first percentage reduction interval is 0%;

[0039] The said percentage reduction interval includes a second percentage reduction interval, and the second percentage reduction interval is [10%, 20%], and the power reduction percentage corresponding to the second percentage reduction interval is [10%, 20%];

[0040] The said percentage reduction interval includes a third percentage reduction interval, and the third percentage reduction interval is (20%, 40%], and the power reduction percentage corresponding to the third percentage reduction interval is [20%, 40%];

[0041] The said percentage reduction interval includes a fourth percentage reduction interval, and the fourth percentage reduction interval is (40%, +∞), and the power reduction percentage corresponding to the fourth percentage reduction interval is [45%, 70%].

[0042] According to the present application, the values of the power reduction percentage and the percentage reduction interval are clearly reasonable.

[0043] Optionally, the larger the value of the said percentage reduction interval, the larger the power reduction percentage corresponding to the said percentage reduction interval.

[0044] According to the present application, there is a clear corresponding relationship between the power reduction percentage and the percentage reduction interval. The more the temperature rises beyond the limit, the more the power decreases, which can avoid overflowing the pot.

[0045] Optionally, the boiling stage includes a plurality of working sections, including: the stage after the temperature detected by the temperature sensor in the boiling stage is greater than or equal to the first temperature includes the plurality of working sections.

[0046] According to the present application, adjusting the heating power by setting the working section after the temperature in the cooking space rises to the first temperature not only ensures the heating efficiency in the early stage, but also reduces the control operation amount, which is reasonable and efficient.

[0047] Optionally, the temperature value range of the first temperature is [25°C, 35°C].

[0048] According to the present application, the first temperature range is clear and the parameters are reasonable.

[0049] Optionally, the control method includes: before the start of each working section, determining the duration of each working section according to the first temperature and the temperature detected by the temperature sensor, and the preset rising temperature of each working section is equal.

[0050] According to the present application, when the preset rising temperature of each working section is equal, adjusting the duration of each working section according to the current temperature detected by the temperature sensor, so as to facilitate more reasonable adjustment of the heating power of the heating device, taking into account both work efficiency and control operation amount.

[0051] Optionally, the determining the duration of each working section according to the first temperature and the temperature detected by the temperature sensor includes:

[0052] Calculating the duration t of each working section according to the following formula:

[0053] t = t1 + (n + 1) × k

[0054] Wherein, t1 is the basic duration, k is the duration increment, and n is the integer part value of the quotient obtained by dividing the difference between the temperature detected by the temperature sensor and the first temperature by the first preset change temperature.

[0055] According to the present application, the calculation method of the duration of each working section is clear and reasonable. Optionally, the value range of the first preset change temperature is [5°C, 20°C].

[0056] According to the present application, the first preset change temperature range is clear and the parameters are reasonable.

[0057] Optionally, the value range of the duration increment is [1s, 10s]; and / or

[0058] The value range of the basic duration is [20s, 40s].

[0059] According to the present application, the duration increment and the basic duration range are clear, and the parameters are reasonable.

[0060] Optionally, the control method includes: before the start of each working section, determining the preset rising temperature of each working section according to the first temperature and the temperature detected by the temperature sensor, and the duration of each working section is equal.

[0061] According to the present application, when the duration of each working section is equal, the preset rising temperature of each working section is adjusted according to the current temperature detected by the temperature sensor, so as to facilitate more reasonable adjustment of the heating power of the heating device, taking into account both work efficiency and control operation amount.

[0062] Optionally, determining the preset rising temperature of each working section according to the first temperature and the temperature detected by the temperature sensor includes:

[0063] Calculating the preset rising temperature m of each working section according to the following formula:

[0064] m = m1 - (p + 1) × q

[0065] Wherein, m1 is the basic rising temperature, q is the temperature increment, and p is the integer part value of the quotient obtained by dividing the difference between the temperature detected by the temperature sensor and the first temperature by the second preset change temperature.

[0066] According to the present application, the calculation method of the preset rising temperature of each working section is clear and reasonable.

[0067] Optionally, the value range of the second preset change temperature is [5°C, 20°C].

[0068] According to the present application, the second preset change temperature range is clear, and the parameters are reasonable.

[0069] Optionally, the value range of the temperature increment is [0.1°C, 4°C]; and / or

[0070] The value range of the basic rising temperature is [1°C, 6°C].

[0071] According to the present application, the temperature increment and the basic rising temperature range are clear, and the parameters are reasonable.

[0072] Optionally, the control method further includes: in the boiling stage, before the temperature detected by the temperature sensor reaches the first temperature, the heating device operates at a first power, and the first power is [60%, 100%] of the full power of the heating device.

[0073] According to the present application, controlling the heating device to operate at a first power to reach a first temperature ensures the heating efficiency, facilitates the control of the heating duration, has a clear first power range, a relatively high power value, and reasonable parameters.

[0074] Optionally, the control method further includes: when the temperature detected by the temperature sensor is greater than or equal to a second temperature, ending the boiling stage.

[0075] According to the present application, setting the second temperature ensures that when the temperature approaches the boiling point, the boiling stage is ended in a timely manner to prevent overflow.

[0076] Optionally, the temperature value range of the second temperature is [85°C, 95°C]; and / or

[0077] The control method further includes: after ending the boiling stage, stopping the heating device from working for a preset stop working duration, and the value range of the preset stop working duration is [10s, 120s].

[0078] According to the present application, the range of the second temperature is clear and the parameters are reasonable. Setting the heating device to stop working for a period of time can further reduce the residual heat of the heating device to prevent overflow, and the range of the preset stop working duration is clear and the parameters are reasonable.

[0079] Optionally, the value range of the duration is [20s, 40s].

[0080] According to the present application, the range of the duration is clear and the parameters are reasonable.

[0081] Optionally, the preset rising temperatures corresponding to each of the working sections are equal, and the durations of at least two of the working sections are not equal, wherein the duration of the working period later in the time sequence is greater than the duration of the working period earlier in the time sequence.

[0082] According to the present application, since the rising slope of the heating temperature gradually decreases and the time required to rise the same temperature is extended, when the preset rising temperatures corresponding to each of the working sections are equal, the duration of the working period later in the time sequence is greater than the duration of the working period earlier in the time sequence, which can more accurately determine whether the heating power is appropriate.

[0083] Optionally, the preset rising temperatures corresponding to each of the working sections are equal, and the value range of the preset rising temperature is [1°C, 6°C].

[0084] According to the present application, the range of the preset rising temperature is clear and the parameters are reasonable.

[0085] Optionally, the duration of each of the working sections is the same, and the preset rising temperatures corresponding to at least two of the working sections are not equal, wherein the preset rising temperature of the working period later in the time sequence is less than the preset rising temperature of the working period earlier in the time sequence.

[0086] According to the present application, since the rising slope of the heating temperature gradually decreases and the temperature change in the same time tends to decrease, when the duration of each working section is the same, the preset rising temperature of the working period later in the time sequence is less than the preset rising temperature of the working period earlier in the time sequence, which can more accurately determine whether the heating power is appropriate.

[0087] Optionally, the cooking process of the cooking appliance further includes a boiling maintenance stage after the boiling rush stage, and the control method further includes: after the end of the last working section, adjusting the heating power to the final boiling rush power according to the difference d and the preset rising temperature of the last working section, and determining the average heating power of the heating device in the boiling maintenance stage according to the final boiling rush power.

[0088] According to the present application, the heating power in the boiling rush stage will tend to a relatively stable value after being adjusted through multiple working sections. This heating power is related to the amount of ingredients. Determining the average heating power of the heating device in the boiling maintenance stage according to the final boiling rush power, that is, setting the heating power in the boiling maintenance stage according to the amount of ingredients, is reasonable and stable and not prone to overflow.

[0089] Optionally, the average heating power of the heating device in the boiling maintenance stage is 30% to 60% of the final boiling rush power; and / or, the greater the final boiling rush power, the greater the average heating power of the heating device in the boiling maintenance stage.

[0090] According to the present application, the range of the average heating power of the heating device in the boiling maintenance stage is clear and the parameters are reasonable. Moreover, there is a clear corresponding relationship between the average heating power of the heating device in the boiling maintenance stage and the final boiling rush power. The final boiling rush power is related to the amount of ingredients, and the greater the amount of ingredients, the greater the heating power in the boiling maintenance stage.

[0091] The second aspect of the present application provides a cooking appliance, including:

[0092] A cooking container for holding food, the internal space of the cooking container being a cooking space;

[0093] A heating device for heating the cooking container, the heating device being configured as a heating plate;

[0094] A temperature sensor for detecting the temperature of the cooking space; and

[0095] A control device, which is electrically connected to both the heating device and the temperature sensor, enabling the heating device to obtain the detection value of the temperature sensor and control the operation of the heating device.

[0096] Wherein, the control device is configured to execute the steps of the control method according to any one of the above first aspects.

[0097] According to the present application, based on the detection of the temperature sensor, the heating device is controlled by the control device, taking into account both the heating efficiency and avoiding overflow. The heating device is configured as a heating plate, and the effect of reducing residual heat is more obvious, and the effect of preventing overflow is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0098] The following drawings of the present application are hereby incorporated as part of the present application for understanding the present application. The embodiments of the present application and their descriptions shown in the drawings are used to explain the principles of the present application.

[0099] In the drawings:

[0100] Figure 1 It is a schematic diagram of a cooking appliance according to a specific embodiment of the present application;

[0101] Figure 2 It is a schematic diagram of the steps of the cooking process of a cooking appliance according to a specific embodiment of the present application;

[0102] Figure 3 It is a schematic diagram of the process flow of the boiling stage of a cooking appliance according to a specific embodiment of the present application.

[0103] Description of the reference numerals:

[0104] 10: Cooking pot body

[0105] 11: Cooking container / inner pot

[0106] 12: Cooking space

[0107] 20: Lid

[0108] 22: Temperature sensor

[0109] 30: Human-machine interaction device

[0110] 100: Cooking appliance

[0111] S201: Water absorption stage

[0112] S202: Flushing boiling stage

[0113] S203: Judging boiling stage

[0114] S204: Maintaining boiling stage

[0115] S205: Simmering stage

[0116] S206: Keeping warm stage Detailed implementation manners

[0117] In the following description, numerous specific details are given to provide a more thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application may be practiced without one or more of these details. In other instances, some well-known technical features are not described in order to avoid obscuring the present application.

[0118] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of the stated features, wholes, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0119] The ordinal numbers such as "first" and "second" cited in the present application are only identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" does not imply the existence of a "second component" by itself, and the term "second component" does not imply the existence of a "first component" by itself.

[0120] It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and similar expressions used herein are for illustrative purposes only and are not restrictive.

[0121] The present application provides a control method for a cooking appliance and a cooking appliance adopting the control method.

[0122] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings.

[0123] As Figure 1 shown, in a specific implementation manner, the cooking appliance 100 according to the present application may include a cooking pot body 10 and a lid body 20. Generally, a cooking container 11 (such as a pot liner) is disposed inside the cooking pot body 10. The cooking pot body 10 may have a receiving portion in a cylindrical shape (or other shapes), and the pot liner 11 can be freely placed into or taken out from the receiving portion to facilitate the cleaning of the pot liner 11. The pot liner 11 is made of a metal material and is configured as a rotating body formed by a pot wall with an opening and an inner cavity. The capacity of the pot liner 11 is generally below 6L. For example, the capacity of the pot liner 11 can be 2L or 4L, etc.

[0124] The lid 20 can be pivotally connected to the cooking pot body 10 through a pivot shaft for covering the cooking pot body 10. When the lid 20 covers the cooking pot body 10, a cooking space 12 is formed between the lid 20 and the inner pot 11. It can be understood that the cooking space 12 is the internal space of the cooking container 11 for holding food ingredients.

[0125] The cooking appliance 100 has a heating device (not shown). The heating device is usually arranged at the bottom of the cooking pot body 10, below the inner pot 11. The heating device is used to heat the inner pot 11 and the food ingredients therein, so as to achieve the cooking function. The heating device can be configured in the form of a heating plate, for example.

[0126] The cooking appliance 100 has a temperature sensor 22 which is usually arranged on the lid 20 for detecting the temperature of the cooking space 12.

[0127] In addition, the cooking appliance 100 further includes a control device (not shown) for realizing the cooking control of the cooking appliance 100. The control device can be a micro control unit (MCU) for example. The control device is electrically connected to both the heating device and the temperature sensor 22, so that the heating device can obtain the detection value of the temperature sensor 22 and can control the operation of the heating device.

[0128] The cooking appliance 100 usually further includes a human-machine interaction device 30 which is usually arranged outside the cooking pot body 10 and is connected to the control device. The human-machine interaction device 30 can facilitate the user operation and prompt the user with information related to the cooking process.

[0129] It should be noted that although some structures of the cooking appliance 100 are schematically described at this time, these enumerations are only exemplary and cannot be used as a limitation on the structure of the cooking appliance 100 in the embodiments of the present application.

[0130] Specifically, as Figure 2As shown, the cooking process of the cooking appliance 100 (such as the process of cooking rice) may sequentially include six stages: a water absorption stage S201, a pre-boiling stage S202, a boiling judgment stage S203, a boiling maintenance stage S204, a rice simmering stage S205, and a heat preservation stage S206. In the water absorption stage S201, the ingredients fully absorb water to improve the taste. In the pre-boiling stage S202, high heat is used to heat to a temperature close to boiling. After the boiling state is judged in the boiling judgment stage S203, boiling is maintained in the boiling maintenance stage S204 to basically cook the ingredients. The rice simmering stage S205 is used to dry the remaining free water and further cook the ingredients. Finally, heat is preserved in the heat preservation stage S206 so that the user can eat hot food. It can be understood that the cooking process of the cooking appliance 100 is specifically controlled by the control device of the cooking appliance 100, and various control methods are also executed by the control device.

[0131] After the water absorption stage S201 ends (the water absorption stage S201 lasts for a predetermined water absorption duration, for example), the control device controls the cooking appliance 100 to enter the pre-boiling stage S202. As Figure 3 shown, after the pre-boiling stage S202 starts, first, the control device controls the heating device to operate at a first power. The first power is configured to be [60%, 100%] of the full power of the heating device, for example. When the temperature in the cooking space 12 is relatively low, the heating device is controlled to operate at a relatively high power to quickly raise the temperature, saving time and having higher work efficiency.

[0132] Furthermore, after the temperature detected by the temperature sensor 22 is greater than or equal to the first temperature, the subsequent pre-boiling stage includes multiple working sections, for example, multiple consecutive working sections. The temperature range of the first temperature is preferably set to [25°C, 35°C], for example, set to 30°C.

[0133] In some embodiments of the present application, before the start of each working section, the duration of each working section is determined according to the first temperature and the temperature detected by the temperature sensor 22, wherein the preset rising temperature of each section is equal. For example, when the preset rising temperatures corresponding to each working section are equal, the value range of the preset rising temperature is set to [1°C, 6°C], for example. For example, the durations of at least two working sections are not equal, and the duration of the working period later in the time sequence is greater than the duration of the working period earlier in the time sequence. For example, the duration t of each working section can be calculated according to the formula t = t1 + (n + 1) × k, where t1 is the basic duration, k is the duration increment, and n is the integer part of the quotient obtained by dividing the difference between the temperature detected by the temperature sensor and the first temperature by the first preset change temperature r1. Among them, the value range of the first preset change temperature r1 is preferably set to [5°C, 20°C], for example, set to 10°C; the value range of the duration increment k is preferably set to [1 s, 10 s], for example, set to 2 s; the value range of the basic duration t1 is preferably set to [20 s, 40 s], for example, set to 30 s.

[0134] Taking a specific working section as an example, the first temperature is set to 30°C, for example, the first preset change temperature r1 is set to 10°C, for example, the duration increment k is set to 2 s, and the basic duration t1 is set to 30 s. Then, when the temperature value detected by the temperature sensor 22 reaches 30°C, the first working section starts, and the duration of the first working section is calculated according to the formula t = t1 + (n + 1) × k, and the value is 32 s; after the first working section ends, the second working section starts, the temperature value at this time is detected by the temperature sensor 22, and the duration of the second working section is calculated according to the formula t = t1 + (n + 1) × k; after the second working section ends, the third working section starts, and the duration of the third working section is also calculated according to the formula t = t1 + (n + 1) × k, and so on.

[0135] For each working section, the control device performs the following operations: record the temperature detected by the temperature sensor 22 at the start of each working section as the initial temperature, record the temperature detected by the temperature sensor 22 at the end of each working section as the end temperature, and after each working section ends, adjust the heating power of the heating device according to the relationship between the difference d between the end temperature and the initial temperature in each working section and the preset rising temperature, that is, adjust the heating power in the next working section according to the relationship between the difference d between the end temperature and the initial temperature in the previous working section and the preset rising temperature.

[0136] Among them, adjusting the heating power of the heating device specifically includes: when the difference d is less than the preset rising temperature, increasing the heating power of the heating device (that is, increasing the heating power in the next working section); when the difference d is greater than the preset rising temperature, decreasing the heating power of the heating device (that is, decreasing the heating power in the next working section); when the difference d is equal to the preset rising temperature, maintaining the heating power unchanged (that is, the heating power in the next working section is the same as that in the previous working section).

[0137] Alternatively, when the difference d is less than the product of the preset rising temperature and the first ratio, increase the heating power; when the difference d is greater than the product of the preset rising temperature and the second ratio, decrease the heating power; when the difference d is greater than or equal to the product of the preset rising temperature and the first ratio and less than or equal to the product of the preset rising temperature and the second ratio, maintain the heating power unchanged. Among them, the first ratio is less than the second ratio. Preferably, the value range of the first ratio is [85%, 95%], and the value range of the second ratio is [105%, 115%].

[0138] According to the relationship between the difference d between the end temperature and the initial temperature in each working section and the preset rising temperature, adjust the heating power of the heating device. Increase the power when the temperature rise is insufficient and decrease the power when the temperature rise is excessive, which can ensure that the heating power of the heating device is smaller and the waste heat of the heating device is less when the temperature in the cooking space 12 is closer to the boiling point. Compared with the method of always using a small power for heating before approaching the boiling point, the heating efficiency is improved, the heating time is saved, and the user experience is enhanced. While effectively controlling the duration of the entire cooking process, the situation of overflowing the pot is avoided.

[0139] More specifically, when the difference d is less than the preset rising temperature, multiple consecutive rising percentage intervals can be set. A power rising percentage is set for each rising percentage interval, and the quotient en1 of the difference between the preset rising temperature and the difference d divided by the preset rising temperature is calculated. Determine the rising percentage interval A in which the quotient en1 is located among the multiple rising percentage intervals, and then further determine the power rising percentage b corresponding to the rising percentage interval A, and adjust the heating power of the heating device according to the power rising percentage b, so that the adjusted heating power is the product of the heating power before adjustment and the sum of 1 and b.

[0140] The rising percentage range A may include, for example, a first rising percentage range, a second rising percentage range, a third rising percentage range, and a fourth rising percentage range. Preferably, the first rising percentage range is (0, 10%), and the corresponding power rising percentage is 0%. The second rising percentage range is [10%, 20%], and the corresponding power rising percentage is [10%, 20%], configured as 15% for example. The third rising percentage range is (20%, 40%], and the corresponding power rising percentage is [20%, 40%], configured as 30% for example. The fourth rising percentage range is (40%, +∞), and the corresponding power rising percentage is [45%, 70%], configured as 50% for example.

[0141] Taking a specific working section as an example, the preset rising temperature is set to 5°C, for example, and the difference d between the end temperature and the initial temperature is 3°C. After calculation, the quotient en1 = (5 - 3) / 5 = 40%, which is in the third rising percentage range. Therefore, the heating power of the heating device is adjusted according to the power rising percentage corresponding to the third rising percentage range. For example, if the corresponding power rising percentage is taken as 30%, the adjusted heating power is set to 130% of the heating power before adjustment.

[0142] The greater the difference between the preset rising temperature minus the difference d, the greater the difference between the actual rising temperature and the preset rising temperature, which also means the greater the difference between the actual heating power of the heating device and the ideal heating power. A greater adjustment to the heating power of the heating device is required. Therefore, the larger the value of each rising percentage range, the greater the power rising percentage corresponding to this rising percentage range. There is a clear corresponding relationship between the power rising percentage and the rising percentage range.

[0143] Similarly, when the difference d is greater than the preset rising temperature, multiple consecutive falling percentage ranges can be set. A power falling percentage is set for each falling percentage range, and the quotient en2 of the difference between the difference d minus the preset rising temperature divided by the preset rising temperature is calculated. The falling percentage range C where the quotient en2 is located is determined among the multiple falling percentage ranges, and then the power falling percentage d corresponding to the falling percentage range C is further determined. The heating power of the heating device is adjusted according to the power falling percentage d, so that the adjusted heating power is the product of the heating power before adjustment and the difference between 1 and d.

[0144] Similarly, the descending percentage range may include, for example, a first descending percentage range, a second descending percentage range, a third descending percentage range, and a fourth descending percentage range. Preferably, the first descending percentage range is (0, 10%), and the corresponding power descending percentage is 0%. The second descending percentage range is (0, 20%], and the corresponding power descending percentage is [(10%, 20%], for example, configured as 15%. The third descending percentage range is (20%, 40%], and the corresponding power descending percentage is [20%, 40%], for example, configured as 30%. The fourth descending percentage range is (40%, +∞), and the corresponding power descending percentage is [45%, 70%], for example, configured as 55%. The larger the value of each descending percentage range, the larger the corresponding power descending percentage.

[0145] Taking a specific working section as an example, the preset rising temperature is set to 5°C, and the difference d between the end temperature and the initial temperature is 8°C. After calculation, the quotient en2 = (8 - 5) / 5 = 60%, which is in the fourth descending percentage range. Therefore, the heating power of the heating device is adjusted according to the corresponding power descending percentage of the fourth descending percentage range. For example, if the corresponding power descending percentage value is 55%, the adjusted heating power is set to 45% of the heating power before adjustment.

[0146] When the difference d between the end temperature and the initial temperature is equal to or within the preset error range of the preset rising temperature, it indicates that the heating temperature is appropriate, and the heating power may not need to be adjusted.

[0147] In the above embodiment, each working section of the boiling stage 202 is continuous in time, and the heating power of the next working section is adjusted according to the heating power of the previous working section. This can increase the monitoring frequency, thereby adjusting the heating power more timely and achieving a more ideal cooking curve.

[0148] When the preset rising temperature of the working section is set to a fixed value, different levels of adjustment of the heating power of the heating device can be achieved in different working sections by adjusting the duration of different working sections, ensuring that the heating power of the heating device is smaller when the temperature is closer to the boiling point.

[0149] In some other embodiments of the present application, the duration of each working section can be set to the same duration, and the value range of the duration can be set, for example, as [20s, 40s]. When the duration of the working section is set to a fixed value, the preset rising temperature of different working sections can be adjusted, so as to adjust the heating power of the heating device at different levels in different working sections, ensuring that the heating power of the heating device is smaller when the temperature is closer to the boiling point. For example, the preset rising temperatures corresponding to at least two working sections are not equal. For example, the preset rising temperature of the working period later in the time sequence is less than the preset rising temperature of the working period earlier in the time sequence.

[0150] Specifically, before the start of each working section, the preset rising temperature of each working section can be determined according to the first temperature and the temperature detected by the temperature sensor, where the duration of each working section is equal. For example, the preset rising temperature m of each working section can be calculated according to the formula m = m1 - (p + 1) × q, where m1 is the basic rising temperature, q is the temperature increment, and p is the integer part of the quotient obtained by dividing the difference between the temperature detected by the temperature sensor 22 and the first temperature by the second preset change temperature r2. The value range of the second preset change temperature r2 is preferably set as [5°C, 20°C], for example, set as 10°C; the value range of the temperature increment q is preferably set as [0.1°C, 4°C], for example, set as 0.5°C; the value range of the basic rising temperature m1 is preferably set as [1°C, 6°C], for example, set as 2°C.

[0151] Further, when the temperature detected by the temperature sensor 22 is greater than or equal to the second temperature, the boiling flushing stage S202 ends and the boiling judgment stage S203 is entered. The temperature value range of the second temperature is preferably set as [85°C, 95°C], for example, set as 90°C, which can be compatible with some high-altitude areas, improve applicability, and further enhance the user experience. Setting the second temperature can ensure that when the temperature is close to the boiling point, the boiling flushing stage S202 ends in time to prevent overflow.

[0152] After the boiling flushing stage S202 ends and before the boiling judgment stage S203 starts, the heating device can be stopped from working for a preset stop working duration, so as to further reduce the residual heat of the heating device and prevent overflow. The value range of the preset stop working duration is preferably set as [10s, 120s], for example, it can be set as 50s.

[0153] After confirming that the food is boiling in the boiling stage S203, the cooking process enters the boiling maintenance stage S204. Preferably, the control device sets the heating power of the boiling maintenance stage S204 according to the heating power in the later stage of the boiling rush stage S202. For example, after the end of the last working section of the boiling rush stage S202, the control device adjusts the heating power of the heating device to the final boiling rush power according to the difference d of the last working section and the preset rising temperature, and then determines the average heating power of the heating device in the boiling maintenance stage S204 according to the final boiling rush power. The heating power in the boiling rush stage S202 will tend to a relatively stable value after being adjusted in multiple working sections. This power value is related to the amount of ingredients. Determining the average heating power of the heating device in the boiling maintenance stage S204 according to the final boiling rush power is reasonable and stable, further avoiding the situation of overflow.

[0154] The average heating power of the heating device in the boiling maintenance stage S204 is set to, for example, 30% to 60% of the final boiling rush power. The greater the final boiling rush power, the greater the average heating power of the heating device in the boiling maintenance stage S204. There is a clear corresponding relationship between the average heating power of the heating device in the boiling maintenance stage S204 and the final boiling rush power. The boiling maintenance stage S204 lasts for a predetermined boiling maintenance duration, for example.

[0155] After ending the boiling maintenance stage S204, it successively goes through the rice simmering stage S205 and the heat preservation stage S206, and finally ends the entire cooking process.

[0156] The processes and steps described in all the above preferred embodiments are only examples. Unless adverse effects occur, various processing operations can be carried out in an order different from the order of the above processes. The order of the steps of the above processes can also be increased, combined or deleted according to actual needs.

[0157] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the technical field of this application. The terms used herein are only for the purpose of describing specific implementation purposes and are not intended to limit this application. The features described in one embodiment herein can be applied alone or in combination with other features to another embodiment, unless the feature is not applicable or otherwise stated in that other embodiment.

[0158] This application has been illustrated by the above embodiments. However, it should be understood that the above embodiments are only for the purpose of exemplification and illustration, and this application is not limited to the above embodiments. According to the teachings of this application, more variations and modifications can be made, and these variations and modifications all fall within the scope claimed by this application.

Claims

1. A control method for a cooking appliance, the cooking appliance including a cooking space for containing food, a heating device for heating the cooking space, and a temperature sensor for detecting the temperature of the cooking space, wherein the heating device is configured as a heating plate, and the cooking process of the cooking appliance includes a boiling-up stage for heating the food in the cooking space to a boiling or nearly boiling state, characterized in that, The control method includes: making the boiling stage include a plurality of working sections; recording the temperature detected by the temperature sensor at the start of each working section as the initial temperature, and recording the temperature detected by the temperature sensor at the end of each working section as the end temperature; after the end of each working section, adjusting the heating power of the heating device according to the relationship between the difference d between the end temperature and the initial temperature in each working section and the preset rising temperature.

2. The control method according to claim 1, wherein The adjusting the heating power of the heating device according to the relationship between the difference d between the end temperature and the initial temperature in each working section and the preset rising temperature includes: when the difference d is less than the preset rising temperature, increasing the heating power; when the difference d is greater than the preset rising temperature, decreasing the heating power; when the difference d is equal to the preset rising temperature, maintaining the heating power unchanged, or when the difference d is less than the product of the preset rising temperature and the first ratio, increasing the heating power; when the difference d is greater than the product of the preset rising temperature and the second ratio, decreasing the heating power; when the difference d is greater than or equal to the product of the preset rising temperature and the first ratio and less than or equal to the product of the preset rising temperature and the second ratio, maintaining the heating power unchanged.

3. The control method according to claim 2, wherein The value range of the first ratio is [85%, 95%], and the value range of the second ratio is [105%, 115%].

4. The control method according to claim 1, characterized in that The adjusting the heating power of the heating device according to the relationship between the difference d between the end temperature and the initial temperature in each working section and the preset rising temperature includes: when the difference d is less than the preset rising temperature: setting a plurality of consecutive rising percentage intervals, setting a power rising percentage corresponding to each of the rising percentage intervals, calculating a quotient value en1 obtained by dividing the difference between the preset rising temperature and the difference d by the preset rising temperature, determining a rising percentage interval A in which the quotient value en1 is located among the plurality of rising percentage intervals, determining a power rising percentage b corresponding to the rising percentage interval A, making the adjusted heating power be the product of the heating power before adjustment and the sum of 1 and b.

5. The control method according to claim 4, wherein the rising percentage interval includes a first rising percentage interval, the first rising percentage interval is (0, 10%), and the power rising percentage corresponding to the first rising percentage interval is 0%; the rising percentage interval includes a second rising percentage interval, the second rising percentage interval is [10%, 20%], and the power rising percentage corresponding to the second rising percentage interval is [10%, 20%]; the rising percentage interval includes a third rising percentage interval, the third rising percentage interval is (20%, 40%], and the power rising percentage corresponding to the third rising percentage interval is [20%, 40%]; The rising percentage range includes a fourth rising percentage range, which is (40%, +∞), and the power rising percentage corresponding to the fourth rising percentage range is [45%, 70%].

6. The control method according to claim 4, characterized in that, The larger the value of the rising percentage range, the larger the power rising percentage corresponding to the rising percentage range.

7. The control method according to claim 1, characterized in that Adjusting the heating power of the heating device according to the relationship between the difference d between the end temperature and the initial temperature in each working section and the preset rising temperature includes: when the difference d is greater than the preset rising temperature: Set a plurality of consecutive falling percentage ranges. Set a power falling percentage corresponding to each of the falling percentage ranges. Calculate the quotient value en2 of the difference obtained by subtracting the preset rising temperature from the difference d divided by the preset rising temperature. Determine the falling percentage range C in which the quotient value en2 is located among the plurality of falling percentage ranges. Determine the power falling percentage d corresponding to the falling percentage range C. Make the adjusted heating power the product of the heating power before adjustment and the difference between 1 and d.

8. The control method according to claim 7, wherein The falling percentage range includes a first falling percentage range, which is (0, 10%), and the power falling percentage corresponding to the first falling percentage range is 0%; The falling percentage range includes a second falling percentage range, which is [10%, 20%], and the power falling percentage corresponding to the second falling percentage range is [10%, 20%]; The falling percentage range includes a third falling percentage range, which is (20%, 40%], and the power falling percentage corresponding to the third falling percentage range is [20%, 40%]; The falling percentage range includes a fourth falling percentage range, which is (40%, +∞), and the power falling percentage corresponding to the fourth falling percentage range is [45%, 70%].

9. The control method according to claim 7, wherein The larger the value of the falling percentage range, the larger the power falling percentage corresponding to the falling percentage range.

10. The control method according to claim 1, wherein Making the boiling-up stage include a plurality of working sections includes: making the stage after the temperature detected by the temperature sensor in the boiling-up stage is greater than or equal to the first temperature include the plurality of working sections.

11. The control method according to claim 10, wherein The temperature value range of the first temperature is [25°C, 35°C].

12. The control method according to claim 10, wherein The control method includes: before the start of each working section, determining the duration of each working section according to the first temperature and the temperature detected by the temperature sensor, and the preset rising temperature of each working section is equal.

13. The control method according to claim 12, characterized in that, Determining the duration of each working section according to the first temperature and the temperature detected by the temperature sensor includes: Calculating the duration t of each working section according to the following formula: t = t1 + (n + 1) × k Wherein, t1 is the basic duration, k is the duration increment, and n is the integer part of the quotient obtained by dividing the difference between the temperature detected by the temperature sensor and the first temperature by the first preset temperature change.

14. The control method according to claim 13, wherein The value range of the first preset temperature change is [5°C, 20°C].

15. The control method according to claim 13, characterized in that The value range of the duration increment is [1s, 10s]; and / or The value range of the basic duration is [20s, 40s].

16. The control method according to claim 10, wherein The control method includes: before the start of each working section, determining the preset rising temperature of each working section according to the first temperature and the temperature detected by the temperature sensor, and the duration of each working section is equal.

17. The control method according to claim 16, wherein Determining the preset rising temperature of each working section according to the first temperature and the temperature detected by the temperature sensor includes: Calculating the preset rising temperature m of each working section according to the following formula: m = m1 - (p + 1) × q Wherein, m1 is the basic rising temperature, q is the temperature increment, and p is the integer part of the quotient obtained by dividing the difference between the temperature detected by the temperature sensor and the first temperature by the second preset temperature change.

18. The control method according to claim 17, wherein The value range of the second preset temperature change is [5°C, 20°C].

19. The control method according to claim 17, characterized in that The value range of the temperature increment is [0.1°C, 4°C]; and / or The value range of the basic rising temperature is [1°C, 6°C].

20. The control method according to claim 10, characterized in that The control method further includes: in the boiling-up stage, before the temperature detected by the temperature sensor reaches the first temperature, the heating device operates at a first power, and the first power is [60%, 100%] of the full power of the heating device.

21. The control method according to claim 1, characterized in that The control method further includes: when the temperature detected by the temperature sensor is greater than or equal to the second temperature, ending the boiling-up stage.

22. The control method according to claim 21, characterized in that The temperature value range of the second temperature is [85°C, 95°C]; and / or The control method further includes: after ending the boiling-up stage, stopping the heating device from working for a preset stop working duration, and the value range of the preset stop working duration is [10s, 120s].

23. The control method according to claim 16, characterized in that, The value range of the duration is [20s, 40s].

24. The control method according to claim 1, characterized in that, The preset rising temperatures corresponding to each working section are equal, and the durations of at least two working sections are not equal, wherein the duration of the working period later in the time sequence is greater than the duration of the working period earlier in the time sequence.

25. The control method according to claim 12, wherein The value range of the preset rising temperature is [1°C, 6°C].

26. The control method according to claim 1, wherein The duration of each working section is the same, and the preset rising temperatures corresponding to at least two working sections are not equal, wherein the preset rising temperature of the working period later in the time sequence is less than the preset rising temperature of the working period earlier in the time sequence.

27. The control method according to any one of claims 1 to 26, characterized in that, The cooking process of the cooking appliance further includes a boiling maintenance stage after the boiling rush stage, and the control method further includes: after the end of the last working section, adjusting the heating power to the final boiling rush power according to the difference d of the last working section and the preset rising temperature, and determining the average heating power of the heating device in the boiling maintenance stage according to the final boiling rush power.

28. The control method according to claim 27, wherein the average heating power of the heating device in the boiling maintenance stage is 30% to 60% of the final boiling rush power; and / or the greater the final boiling rush power, the greater the average heating power of the heating device in the boiling maintenance stage.

29. A cooking appliance, characterized in that, Comprising: a cooking container for holding food, the internal space of the cooking container being a cooking space; a heating device for heating the cooking container, the heating device being configured as a heating plate; a temperature sensor for detecting the temperature of the cooking space; and a control device, the control device being electrically connected to both the heating device and the temperature sensor, so that the heating device can obtain the detection value of the temperature sensor and can control the operation of the heating device, wherein the control device is configured to execute the steps of the control method according to any one of claims 1 to 28.

Images