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 heating device, a detection device and a control device, the heating device is used for heating the bottom and the side wall of a food container, the detection device is used for detecting the temperature of the side wall of the food container, and the control device is electrically connected with the heating device and the detection device; the control method of the cooking utensil comprises the steps that after a heating device works, the side wall temperature of a food container is obtained; and according to the side wall temperature, working parameters of the heating device are controlled, so that the side wall temperature is located between a maximum threshold value and a minimum threshold value. Working parameters of the heating device are controlled through the side wall temperature, accurate and intelligent temperature control and cooking can be achieved, and the problem that the pot wall is burnt can be solved.

Description

Technical Field

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

[0002] Current cooking appliances can achieve various cooking functions, such as stir-frying, steaming, boiling soup, frying, etc. These cooking functions are all based on a temperature measuring element at the bottom of the pot to detect the bottom temperature of the pot, and the cooking power is automatically controlled through the bottom temperature. Taking an induction cooker as an example, on the one hand, the temperature measuring element of the induction cooker is generally at the center of the bottom of the pot, while the heating element acts at about one-third of the position of the coil where the highest temperature at the bottom of the pot is located. It is easy to occur that the temperature measured by the temperature measuring element is not the highest temperature at the bottom of the pot, which will cause a temperature measurement delay. On the other hand, for cooking appliances that can achieve the function of heating the pot wall, the temperature generated at the bottom of the pot may not be the highest, and the temperature of the pot wall may be the highest. At this time, if the cooking is still controlled by the bottom temperature of the pot, it is very likely that the temperature at the pot wall is too high, resulting in the dishes at the pot wall being burnt. Summary of the Invention

[0003] The main object of the present invention is to propose a control method for cooking appliances and cooking appliances, aiming to control the cooking appliances more accurately and avoid the dishes at the pot wall from being burnt.

[0004] To achieve the above object, on the one hand, the present invention proposes a control method for a cooking appliance. The cooking appliance includes a heating device, a detection device, and a control device. The heating device is used to heat the bottom and side walls of a food container. The detection device is used to detect the side wall temperature of the food container. The control device is electrically connected to the heating device and the detection device;

[0005] The control method of the cooking appliance includes:

[0006] After the heating device works, obtain the side wall temperature of the food container;

[0007] According to the side wall temperature, control the working parameters of the heating device so that the side wall temperature is between a maximum threshold and a minimum threshold.

[0008] Optionally, the working parameters of the heating device include heating power.

[0009] The step of controlling the working parameters of the heating device according to the side wall temperature so that the side wall temperature is between a maximum threshold and a minimum threshold includes:

[0010] According to the side wall temperature, when it is judged and confirmed that the side wall temperature is greater than the maximum threshold, reduce the heating power of the heating device;

[0011] When it is determined and confirmed that the sidewall temperature is less than the minimum threshold according to the sidewall temperature, increase the heating power of the heating device so that the sidewall temperature is between the maximum threshold and the minimum threshold.

[0012] Optionally, the sidewall temperature includes a single sidewall temperature, an average value of multiple sidewall temperatures, or a maximum value among multiple sidewall temperatures.

[0013] Optionally, the maximum threshold is 100 - 250 °C, and / or the minimum threshold is 70 - 200 °C.

[0014] Optionally, the sidewall temperature includes a rate of change of a single sidewall temperature, an average value of rates of change of multiple sidewall temperatures, or a maximum value among rates of change of multiple sidewall temperatures.

[0015] Optionally, the sidewall temperature includes the sidewall temperature within a preset height range interval of the food container.

[0016] Optionally, before the step of controlling the operating parameters of the heating device according to the sidewall temperature so that the sidewall temperature is between the maximum threshold and the minimum threshold, the control method further includes:

[0017] When the heating device is in the hot pot stage, when the sidewall temperature reaches the preset value for completing the hot pot, reduce the heating power of the heating device.

[0018] Optionally, the cooking appliance further includes an acoustic - optical alarm device.

[0019] Optionally, before the step of controlling the operating parameters of the heating device according to the sidewall temperature so that the sidewall temperature is between the maximum threshold and the minimum threshold, the control method further includes:

[0020] When the heating device is in the hot pot stage, when the sidewall temperature reaches the preset value for completing the hot pot, control the acoustic - optical alarm device to output an acoustic - optical signal.

[0021] On the other hand, the present invention provides a cooking appliance, which includes:

[0022] A heating device for heating a food container;

[0023] A detection device for detecting the sidewall temperature of the food container, and

[0024] A control device electrically connected to the heating device and the detection device. The control device includes a memory, a processor, and a control program of the cooking appliance stored on the memory and executable on the processor. The control program of the cooking appliance is configured to implement the steps of the control method of the cooking appliance as described above.

[0025] Optionally, the number of the detection devices is at least one.

[0026] Optionally, the detection device is an infrared temperature measuring device or a magnetic coupling temperature measuring device.

[0027] Optionally, the cooking appliance further includes: a panel for supporting the food container, and the detection device is disposed on the panel.

[0028] Optionally, the cooking appliance includes an audible and visual alarm device for outputting an audible and visual signal.

[0029] Optionally, the cooking appliance includes an induction cooker or an infrared cooker.

[0030] Optionally, the heating device includes a coil assembly, the coil assembly includes a bracket and a coil unit, the bracket has a first side and a second side that are opposite in a first direction, the coil unit includes a multi-turn coil, each turn of the coil includes a first wire segment and a second wire segment with opposite currents and connected to each other, and the multi-turn coil is wound around the first side and the second side of the bracket so that a plurality of the first wire segments are distributed on the first side of the bracket and a plurality of second wire segments are distributed on the second side of the bracket.

[0031] In the technical solution of the present invention, the temperature change of the side wall of the food container can truly reflect the heating condition of the food inside the food container. Therefore, it is possible to more accurately judge whether the food in the pot will be burnt on the side wall. Thus, by controlling the working parameters of the heating device through the side wall temperature so that the side wall temperature is between the maximum threshold and the minimum threshold, accurate and intelligent temperature control and cooking can be achieved, and the problem of the pot wall being burnt can be solved. Further, the cooking process can be controlled by controlling the specific temperature of the pot wall, so as to better make special types of dishes, such as the cooking process of earth pot chicken and pancakes that require the use of the side wall temperature for cooking. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0033] Figure 1 It is a schematic diagram of an embodiment of a cooking appliance provided by the present invention;

[0034] Figure 2 It is a schematic diagram of an embodiment of a heating device in a cooking appliance provided by the present invention;

[0035] Figure 3 A three-dimensional schematic diagram of the coil unit of the heating device in the cooking appliance provided by the present invention;

[0036] Figure 4 A schematic diagram of the eddy current when the heating device in the cooking appliance provided by the present invention is working;

[0037] Figure 5 A schematic diagram of the control device structure of the hardware operating environment involved in the solution of the embodiment of the present invention;

[0038] Figure 6 A schematic flow chart of an embodiment of the control method of the cooking appliance provided by the present invention;

[0039] Figure 7 A schematic flow chart of another embodiment of the control method of the cooking appliance provided by the present invention;

[0040] Figure 8 A schematic flow chart of another embodiment of the control method of the cooking appliance provided by the present invention;

[0041] Figure 9 A schematic flow chart of another embodiment of the control method of the cooking appliance provided by the present invention.

[0042] Explanation of the reference numerals in the drawings:

[0043] Reference numeral Name Reference numeral Name 100 Cooking appliance 111b Second side 1 Heating device 112a First wire segment 11 Coil assembly 112b Second wire segment 111 Bracket 2 Detection device 112 Coil unit 3 Panel 111a First side 200 Food container

[0044] The realization of the object of the present invention, functional features and advantages will be further described in conjunction with the embodiments with reference to the drawings. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] It should be noted that if there are directional indications involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0047] In addition, if the embodiments of the present invention involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0048] Current cooking appliances can achieve a variety of cooking functions, such as stir-frying, steaming, boiling soup, frying, etc. These cooking functions are all based on a temperature measuring element at the bottom of the pot to detect the bottom temperature of the pot, and the cooking power is automatically controlled through the bottom temperature. Take the induction cooker as an example. On the one hand, the temperature measuring element of the induction cooker is generally at the center of the bottom of the pot, while the heating element acts at about one-third of the position of the coil where the highest temperature at the bottom of the pot is located. It is easy to occur that the temperature measured by the temperature measuring element is not the highest temperature at the bottom of the pot, resulting in a temperature measurement delay. On the other hand, for cooking appliances that can achieve the function of heating the pot wall, the temperature generated at the bottom of the pot may not be the highest, and the temperature of the pot wall may be the highest. At this time, if the cooking is still controlled by the bottom temperature of the pot, it is very likely that the temperature at the pot wall is too high, resulting in the food at the pot wall being burnt.

[0049] In view of this, the present invention provides a control method for a cooking appliance and a cooking appliance. Figures 1 to 4 This is an embodiment of the cooking appliance provided by the present invention. Figures 5 to 9 This is an embodiment of the control method for the cooking appliance provided by the present invention.

[0050] See Figure 1 , the cooking appliance 100 proposed by the present invention includes a heating device 1, a detection device 2 and a control device. The heating device 1 is used to heat the bottom and side walls of the food container 200, the detection device 2 is used to detect the side wall temperature of the food container 200, and the control device is electrically connected to the heating device 1 and the detection device 2.

[0051] The embodiments of the present invention do not limit the specific form of the heating device 1, which may be a hot plate, an electromagnetic heating device, a heating tape, a resistance wire, an infrared heating device, etc. It should be understood that the heating device 1 mainly heats the cooking cavity, and different heating forms can be correspondingly arranged at different positions. The present invention does not limit this.

[0052] It can be understood that the detection device 2 is used to detect the side wall temperature of the food container 200. The side wall temperature of the food container 200 can be detected by an infrared temperature measurement device or a magnetic coupling temperature measurement device. Therefore, the temperature detection device 2 can be provided on the heating device 1 or on the food container 200. The temperature detection device 2 can be set at any position of the heating device 1 or the food container 200 according to different product spaces, as long as it can meet the requirement of detecting the side wall temperature of the food container 200. The number of the detection devices 2 is at least one, and it can also be a plurality of evenly distributed ones, such as 2, 4, 6, etc.

[0053] In an embodiment of the present invention, the cooking appliance 100 further includes a panel 3 for supporting the food container 200, and the detection device is provided on the panel 3. Buttons can also be provided on the panel 3 for the user to input different instructions to control the cooking appliance 100.

[0054] In an embodiment of the present invention, the cooking appliance 100 includes an acoustic and optical alarm device for outputting acoustic and optical signals to achieve a warning function.

[0055] In an embodiment of the present invention, the cooking appliance 100 includes an induction cooker or an infrared cooker. The induction cooker or the infrared cooker can heat the bottom and the side walls of the food container 200.

[0056] In the embodiment of the present invention, the heating device 1 can only heat the bottom of the food container 200, or can heat both the side walls and the bottom of the food container 200 simultaneously.

[0057] Exemplarily, in an embodiment of the present invention, refer to Figures 2 - 3 , the heating device 1 includes a coil assembly 11. The coil assembly 11 includes a bracket 111 and a coil unit 112. The bracket 111 has a first side 111a and a second side 111b that are opposite in a first direction. The coil unit 112 includes a plurality of turns of coils. Each turn of the coil includes a first wire segment 112a and a second wire segment 112b with opposite currents and connected to each other. The plurality of turns of coils are wound around the first side 111a and the second side 111b of the bracket 111, so that a plurality of the first wire segments 112a are distributed on the first side 111a of the bracket 111, and a plurality of second wire segments 112b are distributed on the second side 111b of the bracket 111.

[0058] During operation, the first side 111a is disposed corresponding to the food container 200. When an alternating current is passed through each of the first wire segments 112a, in accordance with Ampere's law, the magnetic induction lines generated by each of the first wire segments 112a extend from one end of its working area along its working side away from the first wire segment 112a, and then extend to the other end of the working area to form a closed magnetic field. In this way, the magnetic field formed by the first wire segment 112a extends to the periphery of the outer end area of the first wire segment 112a on the one hand to have a wider magnetic field area, and extends outside the working side of the first wire segment 112a to have a higher magnetic field distribution area. Thus, when the heating container is heated, a wider area of the bottom of the food container 200 can be heated, and it can extend to the side wall of the food container 200 to heat the side part of the food container 200. Figure 2 The arrows in Figure 2 are schematic diagrams of the magnetic induction lines when the electromagnetic heating device is operating. Figure 4 The arrows in Figure 4 are schematic diagrams of the eddy currents when the electromagnetic heating device is operating.

[0059] The control device in the cooking appliance 100 includes a memory, a processor, and a control program of the cooking appliance stored on the memory and executable on the processor. The control program of the cooking appliance is configured to implement the steps of the control method of the cooking appliance.

[0060] Referring to Figure 5 , Figure 5 is a schematic structural diagram of the control device for the hardware operating environment involved in the embodiment solution of the present invention.

[0061] As Figure 5 shown, the control device may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection communication between these components. The user interface 1003 may include a display screen (Display) and an input unit such as a keyboard (Keyboard). Optionally, the user interface 1003 may further include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM), or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0062] Those skilled in the art can understand that Figure 5 the structure shown in

[0063] does not constitute a limitation on the control device, and may include more or fewer components than those shown, or combine certain components, or have different component arrangements. Figure 5 As shown in

[0064] the memory 1005, as a storage medium, may include an operating system, a network communication device, a user interface device, and a control program for the cooking appliance. Figure 5 In the control device shown in

[0065] the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the control device of the present invention may be provided in the control device, and the control device calls the control program for the cooking appliance stored in the memory 1005 through the processor 1001 and executes the control method for the cooking appliance provided by the embodiments of the present invention. Figure 6 , Figure 6 is a schematic flowchart of an embodiment of a control method for a cooking appliance according to the present invention.

[0066] The control method for the cooking appliance includes the following steps:

[0067] Step S1: After the heating device 1 works, obtain the side wall temperature of the food container 200.

[0068] After the heating device 2 works, the side wall temperature of the food container 200 will also gradually rise. In this embodiment, the side wall temperature of the food container 200 can be obtained, or the side wall temperature and the bottom temperature of the food container 200 can be obtained simultaneously. Controlling the heating device 1 by the side wall temperature and the bottom temperature of the food container 200 can be more accurate to prevent the problem that the temperature of a certain part is too high or too low, affecting the cooking effect.

[0069] Step S2: According to the side wall temperature, control the working parameters of the heating device 1 so that the side wall temperature is between the maximum threshold and the minimum threshold.

[0070] Among them, the maximum threshold may refer to the temperature at which the food will not burn due to being in close contact with the pot wall, and the minimum threshold may refer to the temperature at which the food can meet the cooking requirements. According to different cooking modes, such as different modes of stir-frying, frying, etc., the settings of the maximum threshold and the minimum threshold may be different, and can be adaptively adjusted according to the actual situation. This embodiment does not specifically limit this.

[0071] Thus, the temperature change of the side wall of the food container can truly reflect the heating condition of the food inside the food container. Therefore, based on this, it is possible to more accurately determine whether the food in the pot will be burnt on the side wall. Thus, by controlling the working parameters of the heating device through the side wall temperature so that the side wall temperature is between the maximum threshold and the minimum threshold, accurate and intelligent temperature control and cooking can be achieved, and the problem of the pot wall being burnt can be solved. Further, the cooking process can be controlled by controlling the specific temperature of the pot wall, so as to better make special types of dishes, such as the cooking process of earth pot chicken and pancakes that require the use of the side wall temperature for cooking.

[0072] It should be noted that in this embodiment, the side wall temperature and the bottom temperature of the food container 200 can also be obtained simultaneously. According to the side wall temperature, the working parameters of the heating device 1 are controlled so that the side wall temperature is between the maximum threshold and the minimum threshold. At the same time, according to the bottom temperature, the working parameters of the heating device 1 are controlled so that the bottom temperature is within the maximum threshold. Thus, usually, the bottom temperature may be higher than the side wall temperature. By adding the control of the bottom temperature, the control of the heating device 1 can be made more accurate to prevent the problem that the temperature of a certain part is too high or too low, affecting the cooking effect.

[0073] In an embodiment of the present invention, the working parameters of the heating device 1 include the heating power. Refer to Figure 7 , the step S2 includes the following sub-steps:

[0074] Step S21: According to the side wall temperature, when it is judged and confirmed that the side wall temperature is greater than the maximum threshold, the heating power of the heating device 1 is reduced.

[0075] In a specific implementation, the side wall temperature can be reduced by reducing the heating power of the heating device 1. Exemplarily, when the heating device 1 is an induction cooker, the width of the driving pulse of the switching device can be reduced to reduce the heating power of the heating device 1.

[0076] Step S22: According to the side wall temperature, when it is judged and confirmed that the side wall temperature is less than the minimum threshold, the heating power of the heating device 1 is increased; so that the side wall temperature is between the maximum threshold and the minimum threshold.

[0077] In a specific implementation, the side wall temperature can be increased by increasing the heating power of the heating device 1. Exemplarily, when the heating device 1 is an induction cooker, the width of the driving pulse of the switching device can be increased to increase the heating power of the heating device 1.

[0078] In an embodiment of the present invention, the side wall temperature includes a single side wall temperature, the average value of multiple side wall temperatures, or the maximum value of multiple side wall temperatures.

[0079] It should be noted that the sidewall temperature can be selected through different cooking functions. For example, when the cooking function is making pancakes, the average value of multiple sidewall temperatures can be obtained; when the cooking function is stir-frying, the maximum value of multiple sidewall temperatures, or a single sidewall temperature, can be obtained.

[0080] In an embodiment of the present invention, the maximum threshold is 100 - 250 °C, and the minimum threshold is 70 - 200 °C. Exemplarily, when making pancakes, the temperature can be controlled within [110 °C, 180 °C], and pancakes can be made without burning during the cooking process.

[0081] In an embodiment of the present invention, the sidewall temperature includes a sidewall temperature change rate, the average value of multiple sidewall temperature change rates, or the maximum value of multiple sidewall temperature change rates.

[0082] In this embodiment, the sidewall temperature can also be determined as a suitable cooking temperature through the temperature change rate. For example, the adjacent two sidewall temperatures can be obtained, and then the difference between these two adjacent sidewall temperatures can be obtained to get the temperature change rate. The sidewall temperature can be selected through different cooking functions. For example, when the cooking function is making pancakes, the average value of multiple sidewall temperature change rates can be obtained; when the cooking function is stir-frying, the maximum value of multiple sidewall temperature change rates, or a single sidewall temperature change rate, can be obtained.

[0083] In an embodiment of the present invention, the sidewall temperature includes the sidewall temperature within a preset height range interval of the food container 200.

[0084] The preset height range interval of the sidewall temperature can be selected through different cooking functions. For example, when the cooking function is making pancakes, the sidewall temperature within a height range of 2 - 20 cm from the bottom of the pot can be obtained.

[0085] In an embodiment of the present invention, before step S2, refer to Figure 8 , the control method further includes:

[0086] Step S1a, when the heating device 1 is in the hot-pot stage and the sidewall temperature reaches the preset value for completing the hot-pot process, reduce the heating power of the heating device 1.

[0087] The hot-pot stage can refer to the preheating of the food container when there is no food loaded in the food container. This preheating usually ends after the food container reaches the temperature preset value and then enters the cooking stage. In this embodiment, the heating device can be controlled according to the sidewall temperature to complete the preheating. For a cooking device with a sidewall heating function, the preheating process can be controlled more precisely.

[0088] In one embodiment of the present invention, the cooking appliance 100 further includes an acoustic and optical alarm device. Before step S2, refer to Figure 9 , the control method further includes:

[0089] Step S1b, when the heating device 1 is in the hot-pot stage and the sidewall temperature reaches the preset value for completing the hot-pot, control the acoustic and optical alarm device to output an acoustic and optical signal.

[0090] In this embodiment, the heating device can be controlled according to the sidewall temperature to give a prompt after the preheating is completed, so as to remind the user that the preheating has been completed. For a cooking device with a sidewall heating function, the preheating process can be controlled more precisely.

[0091] It should be understood that the above is only an example for illustration and does not constitute any limitation to the technical solution of the present invention. In specific applications, those skilled in the art can set it as needed, and the present invention does not limit this.

[0092] It should be noted that the above-described work process is only illustrative and does not limit the protection scope of the present invention. In actual applications, those skilled in the art can select some or all of them according to actual needs to achieve the purpose of the solution of this embodiment, and there is no limitation here.

[0093] The above serial numbers of the embodiments of the present invention are only for description and do not represent the advantages and disadvantages of the embodiments.

[0094] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as a read-only memory (ROM) / RAM, magnetic disk, optical disk), and includes several instructions for causing a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present invention.

[0095] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the description of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A control method for a cooking appliance, characterized in that, the cooking appliance includes a heating device, a detection device and a control device, the heating device is used to heat the bottom and side walls of the food container, the detection device is used to detect the side wall temperature of the food container, and the control device is electrically connected to the heating device and the detection device; the control method of the cooking appliance includes: after the heating device works, obtaining the side wall temperature of the food container; according to the side wall temperature, controlling the working parameters of the heating device so that the side wall temperature is between a maximum threshold and a minimum threshold.

2. The control method according to claim 1, characterized in that, the working parameters of the heating device include heating power, the step of controlling the working parameters of the heating device according to the side wall temperature so that the side wall temperature is between a maximum threshold and a minimum threshold includes: when it is judged and confirmed according to the side wall temperature that the side wall temperature is greater than the maximum threshold, reducing the heating power of the heating device; when it is judged and confirmed according to the side wall temperature that the side wall temperature is less than the minimum threshold, increasing the heating power of the heating device; so that the side wall temperature is between the maximum threshold and the minimum threshold.

3. The control method according to claim 1, characterized in that, the side wall temperature includes a single side wall temperature, an average value of multiple side wall temperatures or a maximum value of multiple side wall temperatures.

4. The control method according to claim 3, characterized in that, the maximum threshold is 100 - 250 °C, and / or, the minimum threshold is 70 - 200 °C.

5. The control method according to claim 1, characterized in that, the side wall temperature includes a single side wall temperature change rate, an average value of multiple side wall temperature change rates or a maximum value of multiple side wall temperature change rates.

6. The control method according to claim 1, characterized in that, the side wall temperature includes the side wall temperature within a preset height range interval of the food container.

7. The control method according to claim 1, characterized in that, before the step of controlling the working parameters of the heating device according to the side wall temperature so that the side wall temperature is between a maximum threshold and a minimum threshold, the control method further includes: when the heating device is in the hot pot stage, when the side wall temperature reaches the preset value for completing the hot pot, reducing the heating power of the heating device.

8. The control method according to claim 1, characterized in that, the cooking appliance further includes an audible and visual alarm device, before the step of controlling the working parameters of the heating device according to the side wall temperature so that the side wall temperature is between a maximum threshold and a minimum threshold, the control method further includes: when the heating device is in the hot pot stage, when the side wall temperature reaches the preset value for completing the hot pot, controlling the audible and visual alarm device to output an audible and visual signal.

9. A cooking appliance, characterized in that, the cooking appliance includes: a heating device for heating a food container; a detection device for detecting the side wall temperature of the food container, and, The control device is electrically connected to the heating device and the detection device. The control device includes a memory, a processor, and a control program for a cooking appliance stored on the memory and executable on the processor. The control program for the cooking appliance is configured to implement the steps of the control method for the cooking appliance according to any one of claims 1 to 8.

10. The cooking appliance according to claim 9, wherein, the number of the detection devices is at least one.

11. The cooking appliance according to claim 9, wherein, the detection device is an infrared temperature measurement device or a magnetic coupling temperature measurement device.

12. The cooking appliance according to claim 9, wherein, the cooking appliance further includes: a panel for supporting a food container, and the detection device is disposed on the panel.

13. The cooking appliance according to claim 9, wherein, the cooking appliance includes an acoustic and optical alarm device for outputting an acoustic and optical signal.

14. The cooking appliance according to any one of claims 9 - 13, wherein, the cooking appliance includes an induction cooker or an infrared cooker.

15. The cooking appliance according to any one of claims 9 - 13, wherein, the heating device includes a coil assembly. The coil assembly includes a bracket and a coil unit. The bracket has a first side and a second side that are opposite in a first direction. The coil unit includes a multi - turn coil. Each turn of the coil includes a first wire segment and a second wire segment with opposite currents and connected to each other. The multi - turn coil is wound around the first side and the second side of the bracket, so that a plurality of the first wire segments are distributed on the first side of the bracket and a plurality of second wire segments are distributed on the second side of the bracket.

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