Cooking utensil, heating power control method and device thereof and medium

Abstract

The invention discloses a cooking utensil, a heating power control method and device thereof and a medium, and relates to the technical field of cooking utensils. The method comprises the steps that under the condition that it is determined that the heating mode of the cooking utensil is uniform heating, time-sharing heating is conducted on a multi-ring heating coil; when it is determined that the heating mode of the cooking utensil is the preset range heating mode, the heating mode of each ring of heating coil of the multiple rings of heating coils is determined according to the heating power of the cooking utensil, and the heating mode comprises one of the same-frequency heating of the adjacent rings of heating coils, the combination of the same-frequency heating and time-sharing heating of the multiple rings of heating coils and the heating of a single ring of heating coil. According to the control method, the multi-ring heating coil is controlled according to the heating mode of the cooking utensil, so that the cooking utensil can uniformly heat different cookware, the compatibility of the cooking utensil to the cookware is improved, the cooking utensil can be suitable for different cooking modes, flexible fire distribution is achieved, and the cooking utensil is more convenient to use. Therefore, firepower distribution requirements of different cooking modes can be met.

Description

Cooking appliances and their heating power control methods, devices and media Technical Field

[0001] This invention relates to the field of cooking appliance technology, and in particular to a heating power control method for a cooking appliance, a heating power control device for a cooking appliance, a computer-readable storage medium, and a cooking appliance. Background Technology

[0002] Currently, in the design of electromagnetic induction heating coils in induction cooktops or multi-burner cooktops, to ensure a uniform magnetic field distribution in the heating area, the same number and distribution of coil turns are typically used in each area. However, to adapt to different cookware shapes and materials, some designs adjust the number and distribution of coil turns in each area, or adopt different hardware measures such as different magnetic strip distributions and coil spacing to achieve better magnetic field uniformity.

[0003] Using different windings or turns, or even different magnetic strip distributions and spacing between winding coils, to achieve uniform magnetic field distribution in different areas may have a better uniformity effect on cookware of a certain material or shape, or it may only be suitable for cooking methods with uniform heating, such as steaming, boiling, and frying. However, a uniform magnetic field distribution cannot be adapted to more cookware materials and shapes, or more different cooking methods, such as stir-frying, stewing, and simmering. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, the first objective of this invention is to provide a method for controlling the heating power of a cooking appliance. When the heating mode of the cooking appliance is determined to be uniform heating, a multi-ring heating coil is used for time-sharing heating. When the heating mode of the cooking appliance is determined to be preset range heating, the heating mode of each ring of the multi-ring heating coil is determined according to the heating power of the cooking appliance. The heating mode includes one of the following: adjacent ring heating coils heating at the same frequency, a combination of simultaneous heating and time-sharing heating of multiple ring heating coils, or heating of a single ring heating coil. This control method of the present invention, by controlling the multi-ring heating coil according to the heating mode of the cooking appliance, enables the cooking appliance to uniformly heat different cookware, improving the compatibility of the cooking appliance with different cookware. It also avoids, to a certain extent, differential frequency noise caused by the different heating frequencies of the inner and outer rings, improving user comfort. Furthermore, it allows the cooking appliance to be suitable for different cooking methods, achieving flexible heat distribution to meet the heat distribution requirements of different cooking methods.

[0005] The second objective of this invention is to provide a heating power control device for a cooking appliance.

[0006] A third objective of this invention is to provide a computer-readable storage medium.

[0007] The fourth objective of this invention is to provide a cooking utensil.

[0008] To achieve the above objectives, a first aspect of the present invention provides a method for controlling the heating power of a cooking appliance. The method includes: when the heating mode of the cooking appliance is determined to be uniform heating, performing time-division heating on a multi-ring heating coil; when the heating mode of the cooking appliance is determined to be preset range heating, determining the heating mode of each ring of the multi-ring heating coil according to the heating power of the cooking appliance, wherein the heating mode includes one of adjacent ring heating coils heating at the same frequency, a combination of multi-ring heating coils heating at the same frequency and time-division heating, and heating of a single ring heating coil.

[0009] According to one embodiment of the present invention, determining that the heating mode of the cooking appliance is uniform heating includes: determining that the heating mode of the cooking appliance is uniform heating when the heating power of the cooking appliance is greater than or equal to a preset power threshold; or determining that the heating mode of the cooking appliance is uniform heating when the cooking mode of the cooking appliance is a first preset cooking mode.

[0010] According to one embodiment of the present invention, determining that the heating mode of the cooking appliance is a preset range heating mode includes: determining that the heating mode of the cooking appliance is a preset range heating mode when the heating power of the cooking appliance is less than a preset power threshold; or determining that the heating mode of the cooking appliance is a preset range heating mode when the cooking mode of the cooking appliance is a second preset cooking mode.

[0011] According to one embodiment of the present invention, time-division heating of a multi-ring heating coil includes: obtaining the type of cooking appliance; determining the heating time of each ring of the multi-ring heating coil according to the type of appliance; and heating sequentially according to the heating sequence of each ring of the multi-ring heating coil based on the corresponding heating time.

[0012] According to one embodiment of the present invention, the heating power of each ring of heating coil may be the same or different, and the total heating power of the multi-ring heating coil is the heating power of the cooking appliance.

[0013] According to one embodiment of the present invention, when the heating mode is that adjacent heating coils are heating at the same frequency, the number of adjacent heating coils heating at the same frequency is determined according to the heating power of the cooking appliance, and the remaining heating coils are controlled to be turned off.

[0014] According to one embodiment of the present invention, when the heating mode is a combination of multi-ring heating coil synchronous heating and time-sharing heating, the number of rings of adjacent coils for synchronous heating is determined according to the heating power of the cooking appliance, and the remaining heating coils are controlled to perform time-sharing heating with the multi-ring heating coils for synchronous heating.

[0015] According to one embodiment of the present invention, when the heating mode is a single-ring heating coil, the heating power of the first ring heating coil is determined according to the heating power of the cooking appliance; wherein, the inner ring of the multi-ring heating coil is the first ring.

[0016] According to one embodiment of the present invention, when the multi-ring heating coil includes N rings, the Nth ring is the outermost ring and the first ring is the innermost ring. When the heating mode includes either simultaneous heating of adjacent ring heating coils or simultaneous heating of multiple ring heating coils, the number of rings of the adjacent heating coils is determined by the direction from the Nth ring heating coil to the first ring heating coil.

[0017] According to an embodiment of the present invention, the above control method further includes: when the cooking mode of the cooking appliance is a preset mode, periodically controlling the Nth ring heating coil to heat for a first preset time, and then controlling the first ring heating coil to heat for a second preset time; or, controlling the Nth ring heating coil and the first ring heating coil to perform time-sharing heating according to a preset time interval.

[0018] To achieve the above objectives, a second aspect of the present invention provides a heating power control device for a cooking appliance, the cooking appliance including a multi-ring heating coil, the device comprising: a first determining module, configured to perform time-division heating of the multi-ring heating coil when the heating mode of the cooking appliance is determined to be uniform heating; and a second determining module, configured to determine the heating mode of each ring of the multi-ring heating coil according to the heating power of the cooking appliance when the heating mode of the cooking appliance is determined to be preset range heating, the heating mode including one of adjacent ring heating coils heating at the same frequency, a combination of multiple ring heating coils heating at the same frequency and time-division heating, and heating of a single ring heating coil.

[0019] To achieve the above objectives, a third aspect of the present invention provides a computer-readable storage medium storing a heating power control program for a cooking appliance, which, when executed by a processor, implements the aforementioned heating power control method for the cooking appliance.

[0020] To achieve the above objectives, a fourth aspect of the present invention provides a cooking appliance, including a memory, a processor, and a heating power control program for the cooking appliance stored in the memory and executable on the processor. When the processor executes the heating power control program for the cooking appliance, the aforementioned heating power control method for the cooking appliance is implemented.

[0021] According to embodiments of the present invention, a cooking appliance and its heating power control method, apparatus, and medium, when the heating mode of the cooking appliance is determined to be uniform heating, multi-ring heating coils are heated in a time-sharing manner; when the heating mode of the cooking appliance is determined to be preset range heating, the heating mode of each ring of the multi-ring heating coil is determined according to the heating power of the cooking appliance. The heating mode includes one of the following: adjacent ring heating coils heating at the same frequency, a combination of simultaneous heating and time-sharing heating of multiple ring heating coils, and heating of a single ring heating coil. The control method of the present invention controls the multi-ring heating coils according to the heating mode of the cooking appliance, enabling the cooking appliance to heat different cookware uniformly, improving the compatibility of the cooking appliance with different cookware, and to a certain extent avoiding differential frequency noise caused by the different heating frequencies of the inner and outer rings, thus improving user comfort. Furthermore, it allows the cooking appliance to be suitable for different cooking methods, achieving flexible heat distribution to meet the heat distribution requirements of different cooking methods. Attached Figure Description

[0022] Figure 1 is a schematic diagram of a two-segment heating coil and a three-segment heating coil according to some embodiments of the present invention;

[0023] Figure 2 is a schematic diagram showing the positional relationship between a flat-bottomed pan and a concave pan and a heating coil of a cooking appliance according to some embodiments of the present invention.

[0024] Figure 3 is a flowchart of a heating power control method for a cooking appliance according to some embodiments of the present invention;

[0025] Figure 4 is a schematic diagram of a four-segment heating coil according to some embodiments of the present invention;

[0026] Figure 5 is a schematic diagram of the operating current of the heating coil during time-sharing heating according to some embodiments of the present invention;

[0027] Figure 6 is a topology diagram of single-tube (a) and half-bridge induction (b) heating according to some embodiments of the present invention;

[0028] Figure 7 is a block diagram of a heating power control device for a cooking appliance according to some embodiments of the present invention;

[0029] Figure 8 is a block diagram of a cooking appliance according to some embodiments of the present invention. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] The following describes in detail, with reference to the accompanying drawings, the cooking appliances and their heating power control methods, devices and media according to embodiments of the present invention.

[0032] In some embodiments, the cooking appliance can be an induction cooker. The bottom of the induction cooker is equipped with a heating coil, which can have one or more loops, as shown in Figure 1. The heating coil can be a two-segment or three-segment heating coil. The white area has no winding, the gray area has winding, and the black edge is the outer frame. The cookware placed on the induction cooker for heating can be a flat-bottomed pan or a concave pan. The positional relationship between the flat-bottomed pan and the concave pan and the heating coil of the induction cooker is shown in Figure 2.

[0033] In some embodiments, induction heating is achieved by applying Faraday's law of electromagnetic induction, where a changing high-frequency magnetic field generates eddy currents within the metal, thus producing Joule heating. The generated eddy currents are directly related to the magnetic field; the stronger the magnetic field, the larger the eddy currents, resulting in greater heat and stronger heating.

[0034] Biot-Savart law is as follows:

[0035]

[0036] Where Idl represents the current element, dB represents the magnetic induction intensity produced by the current element Idl at a distance r, μ represents the permeability at r, and θ represents the angle between the direction of r and the direction of the current element.

[0037] As can be seen from the above formula, the magnetic induction intensity is inversely proportional to the square of the distance. Therefore, if the inner and outer rings are excited with the same current, eddy currents will be induced in the pot, and the pot wall will inevitably have less heat, resulting in less fire.

[0038] When uniform heating of cookware is required, the heat power density of the cookware needs to be similar. Taking a flat-bottomed cookware heated by a dual-section heating coil as an example, for uniform heating, the power density of the bottom and the side walls of the cookware should be similar. However, different cookware has different power densities at the bottom and side walls. Therefore, to improve the compatibility of the induction cooker with different cookware, a flat induction cooker is needed to heat different cookware evenly. Furthermore, uniform heating is suitable for cooking methods such as steaming, boiling, and frying, but not for cooking methods that require concentrated heating, such as stir-frying, stewing, and simmering. Therefore, to meet the heat distribution requirements of different cooking methods, the multi-ring heating coil of the cooking appliance needs to be controlled to achieve flexible heat distribution. However, ordinary heating coils and ordinary control methods cannot achieve this.

[0039] Based on this, the control method of the present invention controls the multi-ring heating coil according to the heating mode of the cooking appliance. For example, when the heating mode is uniform heating, the multi-ring heating coil is heated in a time-sharing manner. The time-sharing heating can flexibly adjust the time ratio of the inner and outer rings according to different types of cookware, so that the cooking appliance can heat different cookware evenly, improving the compatibility of the cooking appliance with different cookware, and can also avoid differential frequency noise caused by the different heating frequencies of the inner and outer rings to a certain extent, thus improving user comfort. When the heating mode is preset range heating, the heating mode of each ring of the multi-ring heating coil can be determined according to the heating power of the cooking appliance, so that the cooking appliance can be used for different cooking methods, achieving flexible heat distribution to meet the heat distribution needs of different scenarios.

[0040] Figure 3 is a flowchart of a heating power control method for a cooking appliance according to some embodiments of the present invention. Referring to Figure 3, the heating power control method for a cooking appliance according to embodiments of the present application may include the following steps:

[0041] S110, when the heating method of the cooking appliance is determined to be uniform heating, the multi-ring heating coil is heated in a time-division manner.

[0042] Specifically, whether the heating method of the cooking appliance is uniform heating can be determined based on the heating power of the cooking appliance or the specific cooking method. For example, if the heating power of the cooking appliance is relatively high, or the cooking method is a preset cooking method, such as frying, deep-frying, or steaming, then the heating method of the cooking appliance is determined to be uniform heating.

[0043] After determining that the heating method of the cooking appliance is uniform heating, the multi-ring heating coil is heated in a time-division manner. Time-division heating means that the heating time of each ring heating coil can be adjusted to achieve uniform heating of the cookware. The heating time can be determined according to the type of cookware, with different types of cookware corresponding to different heating times. This allows the induction cooker to heat different cookware uniformly, improving the compatibility of the induction cooker with different cookware.

[0044] S120, when the heating method of the cooking appliance is determined to be preset range heating, the heating mode of each ring of the multi-ring heating coil is determined according to the heating power of the cooking appliance. The heating mode includes one of the following: adjacent ring heating coils heating at the same frequency, multi-ring heating coils heating at the same frequency and time-sharing heating combination, and single ring heating coil heating.

[0045] Specifically, preset range heating refers to concentrating the heat on the bottom of the pot. The heating method of the cooking appliance can be determined based on its heating power or the specific cooking method. For example, if the heating power of the cooking appliance is relatively low, or the cooking method is a preset cooking method, such as stir-frying, stewing, or soup making, then the heating method of the cooking appliance is determined to be preset range heating.

[0046] After determining that the heating method of the cooking appliance is preset range heating, the heating mode of each ring of the multi-ring heating coil can be determined according to the heating power of the cooking appliance. For example, the heating mode can be determined as simultaneous heating of adjacent rings, simultaneous heating of multiple rings combined with time-sharing heating, or heating of a single ring. It should be noted that when adjacent rings heat at the same frequency, the heat is generally stronger in the inner ring and weaker in the outer ring, meaning the heat will be concentrated at the bottom of the pot. Similarly, when multiple rings combine simultaneous heating and time-sharing heating, the heat will also be concentrated at the bottom of the pot, but the heating power of the cooking appliance will be greater than that when adjacent rings heat at the same frequency. When a single ring heats, the heat will also be concentrated at the bottom of the pot, but the heating power of the cooking appliance will be less than that when adjacent rings heat at the same frequency.

[0047] For example, if the heating power of the cooking appliance is relatively high, a heating mode combining multi-ring heating coils heating at the same frequency and time-sharing heating is adopted; if the heating power of the cooking appliance is relatively low, a heating mode of a single ring is adopted; if the heating power of the cooking appliance is medium, a heating mode of adjacent ring heating coils heating at the same frequency is adopted.

[0048] The control method of this invention controls the multi-ring heating coil according to the heating method of the cooking appliance, enabling the cooking appliance to heat different pots and pans evenly, improving the compatibility of the cooking appliance with different pots and pans, and also avoiding differential frequency noise caused by the different heating frequencies of the inner and outer rings to a certain extent, thus improving user comfort. In addition, it allows the cooking appliance to be used for different cooking methods, achieving flexible heat distribution to meet the heat distribution requirements of different cooking methods.

[0049] In some embodiments, determining that the heating mode of the cooking appliance is uniform heating includes: determining that the heating mode of the cooking appliance is uniform heating when the heating power of the cooking appliance is greater than or equal to a preset power threshold; or determining that the heating mode of the cooking appliance is uniform heating when the cooking mode of the cooking appliance is a first preset cooking mode. The preset power threshold can be determined according to actual conditions; for example, the preset power threshold can be 1500W, and no specific limitation is made here.

[0050] Specifically, the heating method of the cooking appliance can be determined to be uniform by comparing its heating power with a preset power threshold, or by determining whether the specific cooking method is a first preset cooking method. The first preset cooking method is a cooking method that requires uniform heating, such as frying, deep-frying, or steaming.

[0051] For example, if the heating power of the cooking appliance is greater than or equal to a preset power threshold, or if the cooking method of the cooking appliance is a first preset cooking method, then the heating method of the cooking appliance is determined to be uniform heating; otherwise, the heating method of the cooking appliance is determined to be non-uniform heating.

[0052] In some embodiments, determining that the heating mode of the cooking appliance is a preset range heating mode includes: determining that the heating mode of the cooking appliance is a preset range heating mode when the heating power of the cooking appliance is less than a preset power threshold; or determining that the heating mode of the cooking appliance is a preset range heating mode when the cooking mode of the cooking appliance is a second preset cooking mode.

[0053] Specifically, the heating method of the cooking appliance can be determined by comparing its heating power with a preset power threshold, or by determining whether the specific cooking method is a second preset cooking method. The second preset cooking method is a cooking method that requires a preset heating range, such as stir-frying, stewing, or making soup.

[0054] For example, if the heating power of the cooking appliance is less than a preset power threshold, or if the cooking method of the cooking appliance is a second preset cooking method, then the heating method of the cooking appliance is determined to be a preset range heating method; otherwise, the heating method of the cooking appliance is determined to be a preset range heating method.

[0055] In some embodiments, time-division heating of the multi-ring heating coil includes: obtaining the type of cooking appliance; determining the heating time of each ring of the multi-ring heating coil according to the type of appliance; and heating sequentially according to the heating sequence of each ring of the multi-ring heating coil based on the corresponding heating time.

[0056] In some embodiments, the heating power of each ring of the heating coil may be the same or different, and the total heating power of the multi-ring heating coil is the heating power of the cooking appliance.

[0057] Specifically, cooking appliances can be categorized by their material and shape, such as flat-bottomed woks and concave woks. When using a multi-ring heating coil for time-division heating, the built-in algorithm identifies the appliance type. After determining the type, the heating time can be determined by querying a two-dimensional mapping table between the appliance type and the heating time of each ring of the multi-ring heating coil. This mapping table includes multiple appliance types and the corresponding heating time for each ring of the multi-ring heating coil. Furthermore, heating is performed sequentially according to the heating order of each ring of the multi-ring heating coil, for example, from the inner ring to the outer ring, to achieve time-division heating of the multi-ring heating coil.

[0058] In the following description, taking the heating coil of the cooking appliance as a four-segment heating coil and referring to FIG. 4 for illustration, where the first ring is the innermost ring and the fourth ring is the outermost ring, but this is not a limitation to the present invention. Assume that the heating powers of the first to fourth rings are P1, P2, P3, and P4 in sequence, and P1 < P2 < P3 < P4. The power difference between the first to fourth rings can be achieved by time sharing. Each ring independently heats at the same or different power for a certain period of time, and the total heating power of the multi-ring heating coil is the heating power of the cooking appliance.

[0059] Exemplarily, if the heating power of each ring of the heating coil is the same, for example, the heating powers of the first to fourth rings are all 3000W, then the heating times of the inner ring to the outer ring can be controlled to be 10ms, 20ms, 30ms, and 40ms in sequence; if the heating powers of each ring of the heating coil are different, for example, the first ring heats at 1500W and the second to fourth rings all heat at 3000W, then the heating times of the inner ring to the outer ring can be controlled to be 20ms, 20ms, 30ms, and 40ms in sequence. The specific heating method can be determined according to the actual situation and is not specifically limited here.

[0060] It should be noted that the heating power of the cooking appliance can be adjusted by adjusting the heating powers of each ring. For example, if high-fire and uniform heating are required, that is, a relatively large heating power of the cooking appliance is needed, then the heating powers of each ring should be relatively large; if low-fire and uniform heating are required, that is, a relatively small heating power of the cooking appliance is needed, then the heating powers of each ring should be relatively small.

[0061] It should be noted that the minimum adjustment unit of the heating time for time-sharing heating needs to be determined according to the mains frequency. For example, if the mains frequency is 50Hz, the minimum adjustment unit is 10ms; if the mains frequency is 60Hz, the minimum adjustment unit is 8.3ms. Under the condition that the mains frequency is 50Hz and the heating coil of the cooking appliance is a two-segment heating coil, when time-sharing heating is performed with the heating time of the outer ring being 40ms and the heating time of the inner ring being 20ms, the working current of the heating coil is shown in FIG. 5.

[0062] In some embodiments, when the heating mode is that adjacent-ring heating coils heat at the same frequency, determine the number of rings of adjacent heating coils for same-frequency heating according to the heating power of the cooking appliance, and control the remaining heating coils to be turned off.

[0063] Specifically, same-frequency heating means that adjacent-ring heating coils heat at the same resonant frequency. When the heating mode is that adjacent-ring heating coils heat at the same frequency, the number of rings of adjacent heating coils for same-frequency heating can be determined according to the heating power of the cooking appliance. For example, if the heating power of the cooking appliance is relatively large, the number of rings of adjacent heating coils for same-frequency heating is more; on the contrary, if the heating power of the cooking appliance is relatively small, the number of rings of adjacent heating coils for same-frequency heating is less.

[0064] For example, referring to Figure 4, the cooking appliance has the highest heating power when rings one through four heat at the same frequency, and ring four is turned off. When rings one through three heat at the same frequency, the heating power is next, and rings three and four are turned off. When rings one through two heat at the same frequency, the heating power is the lowest. Therefore, if the heating power of the cooking appliance is relatively high, rings one through four are controlled to heat at the same frequency; if the heating power of the cooking appliance is medium, ring four is turned off, and rings one through three heat at the same frequency; if the heating power of the cooking appliance is relatively low, rings three and four are turned off, and rings one through two heat at the same frequency.

[0065] It should be noted that when adjacent heating coils heat at the same frequency, the heat output is generally higher in the inner coil and lower in the outer coil. This means the heat is concentrated at the bottom of the pot. The specific reasons are as follows: Since the pot and heating coil can be considered a loosely coupled model, when the coupling between the pot and the heating coil is high, the electromagnetic field energy of the heating coil can be effectively transferred to the pot, resulting in high energy transfer efficiency. However, when the coupling is poor, the energy transfer efficiency is low. In general engineering practice, the pot is placed a few millimeters above the heating coil plane (the same distance as in an actual induction cooker), and a digital bridge is used to measure the equivalent inductance and equivalent series resistance of the heating coil. The test signal is generally set to a 20kHz / 1V sine wave (the frequency is generally close to the operating frequency of induction heating; the amplitude has no special requirements, but all tests generally use the same signal for easy comparison). When the coupling between the heating coil and the pot is better, the equivalent inductance is smaller and the equivalent series resistance is larger. When the coupling is poor, the equivalent inductance is larger and the equivalent series resistance is smaller. Therefore, when the cookware is coupled to the heating coil and tested using a bridge circuit, the equivalent inductance of the cookware is generally greater than that of the inner ring, while the equivalent series resistance is smaller. In induction heating, the rectified mains signal is converted into a high-frequency changing current by the high-frequency inversion of the resonant module, thus forming a high-frequency changing magnetic field, as shown in Figure 6. In the single-transistor topology, the high-frequency inversion is achieved by continuously switching the switching transistors via the PPG square wave signal between the gate and source (GS) of the switching transistors. In the half-bridge topology, it is achieved by continuously switching the switching transistors via the PWM1 and PWM2 square wave signals controlling the two switching transistors. In actual operation, under the condition of ensuring the reliability of the circuit components, the lower the frequency of the switching transistor controlling the high-frequency inversion, the greater its output heat. Because the inner ring is close to the cookware and has a good coupling, its equivalent inductance is small, while the equivalent inductance of the outer ring is large. When the inner and outer rings are turned on at the same frequency, that is, when heating at the same frequency, the heat output of the outer ring will be less than that of the inner ring.

[0066] In some embodiments, when the heating mode is a combination of simultaneous heating and time-sharing heating of multi-ring heating coils, the number of rings of adjacent coils for simultaneous heating is determined according to the heating power of the cooking appliance, and the remaining heating coils are controlled to perform time-sharing heating with the multi-ring heating coils for simultaneous heating.

[0067] Specifically, the combination of simultaneous and time-sharing heating of multi-ring heating coils refers to adjacent heating coils heating at the same resonant frequency, with adjacent heating coils heating at the same frequency and the remaining heating coils heating at different times. When the heating mode is a combination of simultaneous and time-sharing heating of multi-ring heating coils, the number of adjacent heating coils heating at the same frequency can be determined according to the heating power of the cooking appliance. For example, if the heating power of the cooking appliance is relatively high, the number of adjacent heating coils heating at the same frequency will be less; conversely, if the heating power of the cooking appliance is relatively low, the number of adjacent heating coils heating at the same frequency will be more.

[0068] For example, continuing to refer to Figure 4, when the third and fourth rings heat at the same frequency, and the first, second, and third and fourth rings heat at different times, the heating power of the cooking appliance is greater than when the second, third, and fourth rings heat at the same frequency, and when the first and second, third, and fourth rings heat at different times. Therefore, if the heating power of the cooking appliance is relatively high, the third and fourth rings are controlled to heat at the same frequency, and the first, second, and third and fourth rings are controlled to heat at different times; if the heating power of the cooking appliance is relatively low, the second, third, and fourth rings are controlled to heat at the same frequency, and the first and second, third, and fourth rings are controlled to heat at different times.

[0069] In some embodiments, when the heating mode is a single-ring heating coil, the heating power of the first ring heating coil is determined according to the heating power of the cooking appliance; wherein, the inner ring of the multi-ring heating coil is the first ring.

[0070] Specifically, single-ring heating refers to heating using the first ring of the heating coil. Referring to Figure 4, when the heating mode is single-ring heating, the heating power of the first ring of the heating coil is the heating power of the cooking appliance.

[0071] In some embodiments, when the multi-ring heating coil includes N rings, the Nth ring is the outermost ring and the first ring is the innermost ring. When the heating mode includes either simultaneous heating of adjacent ring heating coils or simultaneous heating of multiple ring heating coils, the number of rings of the adjacent heating coils is determined by the direction from the Nth ring heating coil to the first ring heating coil.

[0072] For example, when the heating mode includes simultaneous heating of adjacent ring heating coils, the number of rings of the adjacent heating coils is determined by the direction from the Nth ring heating coil to the first ring heating coil. For example, the number of rings of the adjacent heating coils can be simultaneous heating from the Nth ring to the first ring, simultaneous heating from the (N-1)th ring to the first ring, simultaneous heating from the (N-2)th ring to the first ring, ..., simultaneous heating from the second ring to the first ring. When the heating mode includes simultaneous heating of multiple ring heating coils, for example, when the heating mode is a combination of simultaneous heating of multiple ring heating coils and time-sharing heating, the number of rings of the adjacent heating coils is determined by the direction from the Nth ring heating coil to the first ring heating coil. For example, the number of rings of the adjacent heating coils can be simultaneous heating of the Nth ring and the (N-1)th ring, simultaneous heating from the Nth ring to the (N-2)th ring, simultaneous heating from the Nth ring to the (N-3)th ring, ..., simultaneous heating from the Nth ring to the second ring.

[0073] As a specific example, referring to Figure 4, when the heating coil of the cooking appliance is a four-segment heating coil, the first ring is the innermost ring and the fourth ring is the outermost ring. If the heating power of the cooking appliance is less than the preset power threshold (1500W), the range between the minimum heating power and the preset power threshold can be divided into the following heating levels: (1) The heating power of the first level is 1500W, using a heating mode that combines simultaneous heating and time-sharing of multiple ring heating coils, controlling the third and fourth rings to heat at the same frequency, and the first, second, and third and fourth rings to heat at different times; (2) The heating power of the second level is 1200W, using a heating mode that combines simultaneous heating and time-sharing of multiple ring heating coils, controlling the second ring to heat at the same frequency, and the first, second, and third and fourth rings to heat at different times; (3) The heating power of the third level is 1000W, and the heating mode of heating the adjacent ring heating coils at the same frequency is adopted, and the first, second, third and fourth rings are heated at the same frequency; (4) The heating power of the fourth level is 700W, and the heating mode of heating the adjacent ring heating coils at the same frequency is adopted, and the fourth ring is controlled to be closed, and the first, second and third rings are heated at the same frequency; (5) The heating power of the fifth level is 500W, and the heating mode of heating the adjacent ring heating coils at the same frequency is adopted, and the third and fourth rings are controlled to be closed, and the first and second rings are heated at the same frequency; (6) The heating power of the sixth level is 400W, and the heating mode of heating the single ring heating coil is adopted, and the second, third and fourth rings are controlled to be closed, and the first ring is heated separately.

[0074] It should be noted that, assuming the cooker has an N-ring heating coil, the range between the minimum heating power and the preset power threshold can be divided into 2N-2 heating levels: (1) The first level uses a heating mode combining simultaneous heating and time-sharing of multiple ring heating coils, controlling the Nth and N-1th rings to heat at the same frequency, and controlling the Nth and N-1th rings to heat at different times with the first ring, ..., N-2th ring; (2) The second level uses a heating mode combining simultaneous heating and time-sharing of multiple ring heating coils, controlling the Nth, N-1th, and N-2th rings to heat at the same frequency, and controlling the Nth, N-1th, and N-2th rings to heat at different times with the first ring, ..., N-3th ring; ...; (N-2) The N-2 level uses a heating mode combining simultaneous heating and time-sharing of multiple ring heating coils, controlling the Nth to 2nd rings to heat at the same frequency, and controlling the Nth ring... The heating modes are as follows: (N-1) The N-1 level uses a heating mode where adjacent ring heating coils heat at the same frequency, controlling rings N through 1 to heat at the same frequency; (N) The N level uses a heating mode where adjacent ring heating coils heat at the same frequency, controlling ring N to close and controlling rings N-1 through 1 to heat at the same frequency; (N+1) The N+1 level uses a heating mode where adjacent ring heating coils heat at the same frequency, controlling rings N through N-1 to close and controlling rings N-2 through 1 to heat at the same frequency; ...; (2N-1) The 2N-1 level uses a heating mode where adjacent ring heating coils heat at the same frequency, controlling rings N through 3 to close and controlling rings 2 through 1 to heat at the same frequency; ...; (2N-2) The 2N-2 level uses a heating mode where a single ring heating coil heats, controlling rings N through 2 to close and controlling ring 1 to heat alone. The first level has the highest heating power and the lowest heating concentration, while the 2N-2 level has the lowest heating power and the highest heating concentration. In the actual process of dividing the power levels, some combinations of power levels can be made according to the actual cooking situation, such as the cooking mode selected by the user, the characteristics of the cookware, or the heating situation.

[0075] In some embodiments, the control method further includes: when the cooking mode of the cooking appliance is a preset mode, periodically controlling the Nth ring heating coil to heat for a first preset time, and then controlling the first ring heating coil to heat for a second preset time; or, controlling the Nth ring heating coil and the first ring heating coil to heat in a time-sharing manner according to a preset time interval. The first preset time and the second preset time are both determined according to actual conditions; for example, both the first preset time and the second preset time can be 1 minute, and no specific limitation is made here.

[0076] For example, to ensure sufficient heating when simmering soup, the Nth heating coil can be periodically controlled to heat for a first preset time, followed by the first heating coil being controlled to heat for a second preset time, causing the soup to churn from the inside out and from the outside in at different times. Alternatively, the Nth and first heating coils can be controlled to heat at different times according to preset time intervals, creating a significant power difference, which also causes the soup to churn from the inside out and from the outside in at different times.

[0077] In summary, the control method of the present invention controls the multi-ring heating coil according to the heating mode of the cooking appliance. For example, when the heating mode is uniform heating, the multi-ring heating coil is heated in a time-sharing manner. This time-sharing heating allows for flexible adjustment of the time ratio between the inner and outer rings according to different types of cookware, enabling the cooking appliance to heat different cookware uniformly, improving the compatibility of the cooking appliance with different cookware, and also avoiding differential frequency noise caused by the different heating frequencies of the inner and outer rings to a certain extent, thus improving user comfort. When the heating mode is preset range heating, the heating mode of each ring of the multi-ring heating coil can be determined according to the heating power of the cooking appliance, making the cooking appliance suitable for different cooking methods and achieving flexible heat distribution to meet the heat distribution needs of different scenarios.

[0078] Corresponding to the above embodiments, this application also proposes a heating power control device for cooking appliances.

[0079] In some embodiments, the cooking appliance includes a multi-ring heating coil. Referring to FIG7, the heating power control device 200 of the cooking appliance includes: a first determining module 210 and a second determining module 220.

[0080] The first determining module 210 is used to perform time-division heating of the multi-ring heating coil when the heating mode of the cooking appliance is determined to be uniform heating. The second determining module 220 is used to determine the heating mode of each ring of the multi-ring heating coil according to the heating power of the cooking appliance when the heating mode of the cooking appliance is determined to be preset range heating. The heating mode includes one of the following: adjacent ring heating coils heating at the same frequency, a combination of simultaneous heating and time-division heating of multiple ring heating coils, and heating of a single ring heating coil.

[0081] According to one embodiment of the present invention, the first determining module 210 is used to determine that the heating mode of the cooking appliance is uniform heating. Specifically, it is used to determine that the heating mode of the cooking appliance is uniform heating when the heating power of the cooking appliance is greater than or equal to a preset power threshold; or to determine that the heating mode of the cooking appliance is uniform heating when the cooking mode of the cooking appliance is a first preset cooking mode.

[0082] According to one embodiment of the present invention, the second determining module 220 is used to determine that the heating mode of the cooking appliance is a preset range heating mode. Specifically, it is used to determine that the heating mode of the cooking appliance is a preset range heating mode when the heating power of the cooking appliance is less than a preset power threshold; or to determine that the heating mode of the cooking appliance is a preset range heating mode when the cooking mode of the cooking appliance is a second preset cooking mode.

[0083] According to one embodiment of the present invention, the first determining module 210 is further configured to perform time-division heating of the multi-ring heating coil, specifically configured to: obtain the type of cooking appliance; determine the heating time of each ring of the multi-ring heating coil according to the type of appliance; and perform heating sequentially according to the heating sequence of each ring of the multi-ring heating coil based on the corresponding heating time.

[0084] According to one embodiment of the present invention, the heating power of each ring of heating coil may be the same or different, and the total heating power of the multi-ring heating coil is the heating power of the cooking appliance.

[0085] According to one embodiment of the present invention, the second determining module 220 is further configured to, when the heating mode is that adjacent heating coils are heating at the same frequency, determine the number of adjacent heating coils heating at the same frequency according to the heating power of the cooking appliance, and control the remaining heating coils to turn off.

[0086] According to one embodiment of the present invention, the second determining module 220 is further configured to, when the heating mode is a combination of multi-ring heating coil synchronous heating and time-sharing heating, determine the number of rings of adjacent coils in synchronous heating according to the heating power of the cooking appliance, and control the remaining heating coils to perform time-sharing heating with the multi-ring heating coils in synchronous heating.

[0087] According to one embodiment of the present invention, the second determining module 220 is further configured to determine the heating power of the first ring heating coil based on the heating power of the cooking appliance when the heating mode is heating with a single ring heating coil; wherein the inner ring of the multi-ring heating coil is the first ring.

[0088] According to one embodiment of the present invention, when the multi-ring heating coil includes N rings, the Nth ring is the outermost ring and the first ring is the innermost ring. When the heating mode includes either simultaneous heating of adjacent ring heating coils or simultaneous heating of multiple ring heating coils, the number of rings of the adjacent heating coils is determined by the direction from the Nth ring heating coil to the first ring heating coil.

[0089] According to an embodiment of the present invention, the above control method further includes: when the cooking mode of the cooking appliance is a preset mode, periodically controlling the Nth ring heating coil to heat for a first preset time, and then controlling the first ring heating coil to heat for a second preset time; or, controlling the Nth ring heating coil and the first ring heating coil to perform time-sharing heating according to a preset time interval.

[0090] It should be noted that the above explanation of the embodiments and beneficial effects of the heating power control method for cooking appliances also applies to the heating power control device for cooking appliances in the embodiments of the present invention. To avoid redundancy, it will not be elaborated in detail here.

[0091] Corresponding to the above embodiments, this application also proposes a computer-readable storage medium.

[0092] The computer-readable storage medium of this application stores a heating power control program for a cooking appliance, which, when executed by a processor, implements the aforementioned heating power control method for the cooking appliance.

[0093] It should be noted that the above explanation of the embodiments and beneficial effects of the heating power control method for cooking appliances is also applicable to the computer-readable storage medium of the embodiments of the present invention. To avoid redundancy, it will not be elaborated in detail here.

[0094] Corresponding to the above embodiments, this application also proposes a cooking utensil.

[0095] Referring to Figure 8, the cooking appliance 300 of this application includes a memory 310, a processor 320, and a heating power control program for the cooking appliance stored in the memory 310 and executable on the processor 320. When the processor executes the heating power control program for the cooking appliance, it implements the aforementioned heating power control method for the cooking appliance.

[0096] It should be noted that the above explanation of the embodiments and beneficial effects of the heating power control method for cooking appliances also applies to cooking appliances in the embodiments of the present invention. To avoid redundancy, they will not be elaborated in detail here.

[0097] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0098] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0099] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0100] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0101] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0102] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for controlling the heating power of a cooking appliance, characterized in that, The cooking appliance includes a multi-ring heating coil, and the method includes: when the heating mode of the cooking appliance is determined to be uniform heating, performing time-division heating on the multi-ring heating coil; when the heating mode of the cooking appliance is determined to be preset range heating, determining the heating mode of each ring of the multi-ring heating coil according to the heating power of the cooking appliance, wherein the heating mode includes one of adjacent ring heating coils heating at the same frequency, a combination of multiple ring heating coils heating at the same frequency and time-division heating, and heating of a single ring heating coil.

2. The method according to claim 1, characterized in that, Determining that the heating mode of the cooking appliance is uniform heating includes: determining that the heating mode of the cooking appliance is uniform heating when the heating power of the cooking appliance is greater than or equal to a preset power threshold; or determining that the heating mode of the cooking appliance is uniform heating when the cooking mode of the cooking appliance is a first preset cooking mode.

3. The method according to claim 2, characterized in that, Determining that the heating mode of the cooking appliance is a preset range heating mode includes: determining that the heating mode of the cooking appliance is a preset range heating mode when the heating power of the cooking appliance is less than the preset power threshold; or determining that the heating mode of the cooking appliance is a preset range heating mode when the cooking mode of the cooking appliance is a second preset cooking mode.

4. The method according to claim 1, characterized in that, The multi-ring heating coil is heated in a time-division manner, including: obtaining the type of the cooking appliance; determining the heating time of each ring of the multi-ring heating coil according to the type of appliance; and heating sequentially according to the heating sequence of each ring of the multi-ring heating coil based on the corresponding heating time.

5. The method according to claim 4, characterized in that, in, The heating power of each ring of the heating coil may be the same or different, and the total heating power of the multi-ring heating coil is the heating power of the cooking appliance.

6. The method according to claim 1, characterized in that, When the heating mode is that the adjacent heating coils are heating at the same frequency, the number of adjacent heating coils heating at the same frequency is determined according to the heating power of the cooking appliance, and the remaining heating coils are controlled to be turned off.

7. The method according to claim 1, characterized in that, When the heating mode is a combination of multi-ring heating coil synchronous heating and time-sharing heating, the number of rings of adjacent coils for synchronous heating is determined according to the heating power of the cooking appliance, and the remaining heating coils are controlled to perform time-sharing heating with the multi-ring heating coils for synchronous heating.

8. The method according to claim 1, characterized in that, When the heating mode is a single-ring heating coil, the heating power of the first ring heating coil is determined according to the heating power of the cooking appliance; wherein, the inner ring of the multi-ring heating coil is the first ring.

9. The method according to claim 1, characterized in that, When the multi-ring heating coil includes N rings, the Nth ring is the outermost ring and the first ring is the innermost ring. When the heating mode includes either adjacent ring heating coils heating at the same frequency or multi-ring heating coils heating at the same frequency, the number of rings of the adjacent heating coils is determined by the direction from the Nth ring heating coil to the first ring heating coil.

10. The method according to claim 9, characterized in that, The method further includes: when the cooking mode of the cooking appliance is a preset mode, periodically controlling the Nth ring heating coil to heat for a first preset time, and then controlling the first ring heating coil to heat for a second preset time; or, controlling the Nth ring heating coil and the first ring heating coil to heat in a time-sharing manner according to a preset time interval.

11. A heating power control device for a cooking appliance, characterized in that, The cooking appliance includes a multi-ring heating coil, and the device includes: a first determining module, used to perform time-division heating of the multi-ring heating coil when the heating mode of the cooking appliance is determined to be uniform heating; and a second determining module, used to determine the heating mode of each ring of the multi-ring heating coil according to the heating power of the cooking appliance when the heating mode of the cooking appliance is determined to be preset range heating, wherein the heating mode includes one of adjacent ring heating coils heating at the same frequency, a combination of multiple ring heating coils heating at the same frequency and time-division heating, and heating of a single ring heating coil.

12. A computer-readable storage medium, characterized in that, It stores a heating power control program for a cooking appliance, which, when executed by a processor, implements the heating power control method for a cooking appliance according to any one of claims 1-10.

13. A cooking utensil, characterized in that, The method includes a memory, a processor, and a heating power control program for a cooking appliance stored in the memory and executable on the processor. When the processor executes the heating power control program for the cooking appliance, it implements the heating power control method for the cooking appliance according to any one of claims 1-10.

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