Control method of cooking appliance and cooking appliance

Abstract

The application discloses a cooking utensil control method and a cooking utensil, and relates to the technical field of electromagnetic heating. The cooking utensil control method comprises the following steps: when a cooking instruction is received, a cooking parameter in the cooking instruction is acquired, the cooking parameter comprising a bottom size parameter of a pot; and according to the bottom size parameter of the pot, a driving mechanism and a plurality of electromagnetic heating units are controlled to work, so that the positions of the plurality of electromagnetic heating units correspond to the bottom size of the pot. The bottom size parameter of the pot is acquired through the received cooking instruction, so that the size of the required heating range can be determined, the driving mechanism is controlled to drive the plurality of electromagnetic heating units to move, and then the optimal magnetic pole position is matched, so that the heating range size is adjusted, the heating range can be adapted to the bottom size of the pot, and the pot is heated, thereby solving the problem that a plurality of magnetic pole line discs have poor adaptability to the pot and are only suitable for heating pots with appropriate sizes.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic heating technology, and in particular to a control method for a cooking appliance and the cooking appliance itself. Background Technology

[0002] Ordinary induction cookers typically use a circular or square coil with a single pair of magnetic poles. When heating cookware, the area with the highest heating density is a ring-shaped region about 1 / 3 to 2 / 3 of the radius from the center. When used with a wok, this ring-shaped region is usually located at the bottom of the wok, making it easy for food to burn. In contrast, coils with two or more pairs of magnetic poles arranged along the direction of the wok can generate an area with high heating power density at each pole position. Furthermore, due to the large number of magnetic poles distributed around the perimeter of the wok wall, the heating uniformity of the entire bottom of the wok and the area near the bottom is significantly improved.

[0003] In multi-pole coils, the heating power density is higher at the location of the cookware corresponding to the magnetic poles, and the distribution of the magnetic poles determines the location of the main heating area of ​​the cookware. When cooking utensils are matched with cookware of different sizes, the location of the heating area on the cookware will change accordingly. Specifically, when using a small-diameter cookware, the heating area is closer to the perimeter of the cookware; while when using a large-diameter cookware, the heating area is closer to the bottom of the cookware; even when using some small-diameter milk pots, because the magnetic pole area is not covered, the coupling between the coil and the cookware is weak, resulting in the inability to detect and heat the cookware at all. Multi-pole coils have poor adaptability to cookware and are only suitable for heating cookware of appropriate size. Summary of the Invention

[0004] The main objective of this invention is to propose a control method and cooking appliance for cooking, aiming to solve the problem that multi-pair magnetic pole coils have poor adaptability to cookware and are only suitable for heating cookware of a suitable size.

[0005] To achieve the above objectives, the present invention proposes a control method for a cooking appliance. The cooking appliance includes a main body and a plurality of electromagnetic heating units disposed within the main body. The plurality of electromagnetic heating units are spaced apart along a circumferential direction. The main body has a heating zone for placing a pot. The plurality of electromagnetic heating units are used to electromagnetically heat the pot placed in the heating zone. The plurality of electromagnetic heating units are distributed along a distribution area opposite to the heating zone and are movably disposed in directions near and away from the center of the distribution area. The cooking appliance also includes a drive mechanism for driving the electromagnetic heating units. The control method for the cooking appliance includes the following steps: Upon receiving a cooking instruction, the cooking parameters in the cooking instruction are obtained, including the bottom dimension parameters of the cookware; Based on the bottom dimension parameters of the cookware, the drive mechanism and the plurality of electromagnetic heating units are controlled to operate so that the positions of the plurality of electromagnetic heating units correspond to the bottom dimension of the cookware.

[0006] In one embodiment, the step of obtaining the cooking parameters in the cooking instruction includes: Acquire the detection parameters generated by the interaction between the plurality of electromagnetic heating units and the cookware placed in the heating zone; Based on the detection parameters, determine the bottom dimensions of the cookware.

[0007] In one embodiment, the detection parameter includes the number of pulses; The plurality of electromagnetic heating units have initial positions that are close to each other during their active stroke, and a plurality of working positions that are sequentially arranged in a direction away from the center of the heating zone; The step of determining the bottom dimension parameters of the cookware based on the detection parameters includes: The real-time pulse count of the plurality of electromagnetic heating units moving sequentially from the initial position to the plurality of working positions is obtained; When the current pulse count is less than the previous pulse count, the previous working position is determined as the maximum working position, and the bottom size parameters of the cookware are determined based on the maximum working position.

[0008] In one embodiment, the step of obtaining the real-time pulse count of the plurality of electromagnetic heating units moving sequentially from the initial position to the plurality of working positions includes: At the current working position, the real-time pulse count of each electromagnetic heating unit is obtained sequentially; The step of determining the previous working position as the maximum working position when the current pulse count is less than the previous pulse count includes: When the number of pulses in the current electromagnetic heating unit is less than the number of pulses in the previous detection, the previous working position is determined as the maximum working position.

[0009] In one embodiment, the step of controlling the operation of the drive mechanism and the plurality of electromagnetic heating units according to the bottom size parameters of the pot includes: The multiple electromagnetic heating units are controlled to move to the maximum working position to heat the cookware.

[0010] In one embodiment, the step of controlling the operation of the drive mechanism and the plurality of electromagnetic heating units according to the bottom size parameters of the pot includes: The plurality of electromagnetic heating units are controlled to move between the initial position and the maximum working position to heat the cookware.

[0011] In one embodiment, the step of controlling the operation of the drive mechanism and the plurality of electromagnetic heating units according to the bottom size parameters of the pot includes: According to the cooking command, the plurality of electromagnetic heating units are controlled to move to a working position between the initial position and the maximum working position, and the cookware is heated.

[0012] The present invention also provides a cooking utensil, the cooking utensil comprising: The main body includes a heating zone for placing cookware; and... Multiple electromagnetic heating units are spaced apart along a circumferential direction. The main body has a heating zone for placing cookware. The multiple electromagnetic heating units are used to electromagnetically heat the cookware placed in the heating zone. The multiple electromagnetic heating units are distributed along a distribution area opposite to the heating zone and are movably arranged in directions near and away from the center of the distribution area; and... A drive mechanism is used to drive the movement of the plurality of electromagnetic heating units; A control device is electrically connected to the drive mechanism and the plurality of electromagnetic heating units, and is used to control the operation of the drive mechanism and the plurality of electromagnetic heating units.

[0013] In one embodiment, the control device includes a memory, a processor, and a control program for a cooking appliance stored in the memory and executable on the processor, the control program being configured to implement the steps of the control method for the cooking appliance described above.

[0014] In one embodiment, each of the electromagnetic heating units has a rotating shaft extending along the first direction, the rotating shaft being eccentrically arranged, and the outer peripheral wall of the rotating shaft having a first toothed portion. The drive mechanism includes: A driving member, rotatably disposed about a rotation axis extending along the first direction, has a plurality of second teeth spaced apart circumferentially on the driving member, wherein a plurality of the rotating shafts are spaced apart circumferentially on the driving member, and each first tooth meshes with a corresponding second tooth, the driving member being used to drive a plurality of the electromagnetic heating units to rotate during rotation; and The drive motor has an output shaft extending along the first direction, and the outer periphery of the output shaft is provided with a gear that meshes with the second toothed portion.

[0015] In one embodiment, each of the electromagnetic heating units includes: stents; and, The winding unit is arranged in a ring, and has a first winding loop segment near the center of the distribution area and a second winding loop segment near the edge of the distribution area. In two adjacent electromagnetic heating units, the current directions of the two winding units are set to be opposite, so that opposite magnetic poles are formed in the middle of the two winding units, and in at least one winding unit, the width of at least a portion of the first winding loop segment is d1, the width of at least a portion of the second winding loop segment is d2, and d1 is greater than d2.

[0016] In one embodiment, each of the electromagnetic heating units includes: stents; and, The winding unit is arranged in a ring, and has a first winding loop segment near the center of the distribution area and a second winding loop segment near the edge of the distribution area. In two adjacent electromagnetic heating units, the current directions of the two winding units are set to be opposite, so that opposite magnetic poles are formed in the middle of the two winding units, and in at least one winding unit, the winding center of the winding unit is located on the side of its geometric center close to the second winding loop segment.

[0017] The technical solution provided by this invention includes a cooking appliance comprising a main body and a plurality of electromagnetic heating units disposed within the main body. The plurality of electromagnetic heating units are spaced apart along a circumferential direction. The main body is provided with a heating zone for placing a pot. The plurality of electromagnetic heating units are used to electromagnetically heat the pot placed in the heating zone. The plurality of electromagnetic heating units are distributed along a distribution area opposite to the heating zone and are movably disposed in directions close to and away from the center of the distribution area. The cooking appliance also includes a drive mechanism for driving the electromagnetic heating units. The control method of the cooking appliance includes the following steps: upon receiving a cooking command, acquiring cooking parameters in the cooking command, the cooking parameters including the bottom size parameters of the pot; and controlling the drive mechanism and the plurality of electromagnetic heating units to operate according to the bottom size parameters of the pot, so that the positions of the plurality of electromagnetic heating units correspond to the bottom size of the pot. The bottom dimensions of the cookware are obtained by receiving cooking instructions, thereby determining the required heating range. The drive mechanism is then controlled to activate the multiple electromagnetic heating units, matching the optimal magnetic pole positions and adjusting the heating range to ensure it matches the bottom dimensions of the cookware. This addresses the problem of poor adaptability of multiple magnetic pole coils to cookware, which are only suitable for heating appropriately sized cookware. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the cooking utensil provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the electromagnetic heating unit and the cookware in the picture; Figures 3 to 5 for Figure 1 A schematic diagram showing the electromagnetic heating unit in different working positions; Figure 6 for Figure 1 A schematic diagram of the electromagnetic heating unit and the drive mechanism; Figure 7 for Figure 6 A cross-sectional schematic diagram of AA in the middle; Figure 8 This is a schematic diagram showing the direction of movement of the electromagnetic heating unit; Figure 9 for Figure 6 An exploded view of the electromagnetic heating unit and drive mechanism. Figure 10 for Figure 6 A schematic diagram of the rear of the electromagnetic heating unit and drive mechanism; Figure 11 for Figure 10 A magnified view of part B; Figure 12 This is a schematic diagram of the structure of the control device for the hardware operating environment involved in the embodiments of the present invention; Figure 13 A schematic flowchart of an embodiment of the control method for cooking appliances provided by the present invention; Figure 14 A schematic flowchart of an embodiment of the control method for cooking appliances provided by the present invention; Figure 15 This is a schematic flowchart of an embodiment of the control method for cooking appliances provided by the present invention.

[0020] Explanation of icon numbers: 100. Cooking appliance; 1. Main body; 11. Mounting base; 2. Electromagnetic heating unit; 21. Bracket; 211. Rotating shaft; 2111. First toothed part; 22. Winding unit; 201. First winding loop segment; 202. Second winding loop segment; 23. Magnetic guide part; 3. Drive mechanism; 31. Drive component; 311. Second toothed part; 32. Drive motor; 321. Gear; 4. Control device; 200. Cookware.

[0021] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0025] In multi-pole coils, the heating power density is higher at the location of the cookware corresponding to the magnetic poles, and the distribution of the magnetic poles determines the location of the main heating area of ​​the cookware. When cooking utensils are matched with cookware of different sizes, the location of the heating area on the cookware will change accordingly. Specifically, when using a small-diameter cookware, the heating area is closer to the perimeter of the cookware; while when using a large-diameter cookware, the heating area is closer to the bottom of the cookware; even when using some small-diameter milk pots, because the magnetic pole area is not covered, the coupling between the coil and the cookware is weak, resulting in the inability to detect and heat the cookware at all. Multi-pole coils have poor adaptability to cookware and are only suitable for heating cookware of appropriate size.

[0026] To address this technical problem, the present invention provides a control method for a cooking appliance and a cooking appliance in general, which solves the problem that multiple pairs of magnetic pole coils have poor adaptability to cookware and are only suitable for heating cookware of a suitable size.

[0027] Please see Figures 1 to 3 The cooking appliance 100 includes a main body 1, multiple electromagnetic heating units 2, a drive mechanism 3, and a control device 4. The main body 1 has a heating zone for placing a pot 200. The multiple electromagnetic heating units 2 are arranged at intervals along a circumferential direction. The multiple electromagnetic heating units 2 are used to electromagnetically heat the pot 200 placed in the heating zone. The multiple electromagnetic heating units 2 are distributed along a distribution area opposite to the heating zone and are movably arranged in a direction close to and away from the center of the distribution area. The drive mechanism 3 is used to drive the multiple electromagnetic heating units 2 to move. The control device 4 is electrically connected to the drive mechanism 3 and the multiple electromagnetic heating units 2 and is used to control the operation of the drive mechanism 3 and the multiple electromagnetic heating units 2.

[0028] The cooking appliance 100 can be an induction cooker, an electric cooker (such as a rice cooker or soup pot), or a pressure cooker, etc.

[0029] It should be noted that the cookware 200 can be designed as an integral part of the main body 1, in which case the cookware 200 is fixed during processing. Alternatively, the cookware 200 can be configured as a detachable component, in which case the multiple electromagnetic heating units 2 form an open heating platform within the main body 1. For details, please refer to [link / reference]. Figure 1 In this embodiment, the main body 1 includes a base and a panel covering the base, the upper surface of which forms a heating zone for placing the cookware 200. The main body 1 also includes a mounting base 11 for mounting the drive mechanism 3.

[0030] It should also be noted that, please refer to Figures 6 to 9Each electromagnetic heating unit 2 includes a support 21, and a winding unit 22 and a magnetic conductive part 23 respectively disposed on both sides of the support 21 in a relatively opposite manner. The driving mechanism 3 drives the support 21 to move. When the support 21 moves, it drives the winding unit 22 and the magnetic conductive part 23 to move synchronously. Each electromagnetic heating unit 2 heats a region of the corresponding pot 200. Since the multiple electromagnetic heating units 2 are arranged at intervals along a circumferential direction, the resulting heating range is roughly annular or circular.

[0031] It is understood that the shapes of the electromagnetic heating units 2 can be identical or different.

[0032] It should be noted that the shape of the electromagnetic heating unit 2 can be set to a regular shape, such as a circle, square, or triangle. Of course, the electromagnetic heating unit 2 can also be set to an irregular shape. Preferably, in order to form a heating range that is compatible with the circular bottom of most cookware 200 when the multiple electromagnetic heating units 2 are close to each other, the multiple electromagnetic heating units 2 are arranged close to each other to form a relatively complete circular heating range.

[0033] Since the plurality of electromagnetic heating units 2 are movably arranged in the direction of approaching and away from the center of the distribution area, in order to ensure that the bottom of the pot 200 is heated evenly, the shape of each electromagnetic heating unit 2 is set to be consistent.

[0034] Specifically, please refer to Figures 9 to 11 In one embodiment, each of the electromagnetic heating units 2 has a rotating shaft 211 extending along the first direction. The rotating shaft 211 is eccentrically arranged, and the outer peripheral wall of the rotating shaft 211 is formed with a first tooth 2111. The driving mechanism 3 includes a driving member 31 and a driving motor 32. The driving member 31 is rotatably arranged about a rotation axis extending along the first direction. A plurality of second teeth 311 are spaced apart in the circumferential direction of the driving member 31. The plurality of rotating shafts 211 are spaced apart along the circumferential direction of the driving member 31. Each first tooth 2111 meshes with a corresponding second tooth 311. The driving member 31 is used to drive the plurality of electromagnetic heating units 2 to rotate when rotating. The driving motor 32 has an output rotating shaft 211 extending along the first direction. The outer peripheral of the output rotating shaft 211 is provided with a gear 321 that meshes with the second tooth 311.

[0035] Thus, by setting the rotating shaft 211 at a position off-center from the center of the corresponding electromagnetic heating unit 2, when the electromagnetic heating unit 2 rotates around the rotating shaft 211, the distance from the center of the distribution area to the side of the electromagnetic heating unit 2 away from the center of the distribution area will also change, thereby allowing the heating range formed by the plurality of electromagnetic heating units 2 to be adjusted.

[0036] The specific method for achieving the rotation of the rotating shaft 211 is as follows: Please refer to... Figures 10 to 11 The driving member 31 has multiple second teeth 311 spaced apart circumferentially. The driving member 31 can be configured as a ring structure and is rotatably arranged around a rotation axis extending along the first direction. When the driving member 31 rotates, each second tooth 311 meshes with a first tooth 2111 on a corresponding rotating shaft 211, thus driving each rotating shaft 211 to rotate, thereby driving the corresponding electromagnetic heating unit 2 to rotate. Since the driving member 31 is driven to rotate by the driving motor 32, by providing a driving motor 32 to cooperate with the driving member 31, synchronous adjustment of multiple electromagnetic heating units 2 can be achieved.

[0037] In this embodiment, in addition to the rotation method described above, the distance between the plurality of electromagnetic heating units 2 can also be adjusted by radial translation along the distribution area to enable the movement of the plurality of electromagnetic heating units 2 in directions of approaching and moving away from each other.

[0038] Furthermore, when multiple electromagnetic heating units 2 move radially along the distribution area, in order to improve the heating effect on the pot wall, please refer to... Figure 3 In one embodiment, each of the electromagnetic heating units 2 includes a support 21 and a winding unit 22. Each winding unit 22 is arranged in a ring and has a first winding loop segment 201 near the center of the distribution area and a second winding loop segment 202 near the edge of the distribution area. In the pair of winding units 22, the current directions of the two winding units 22 are set to be opposite, so that opposite magnetic poles are formed in the middle of the two winding units 22. In at least one of the winding units 22, the width of at least a portion of the first winding loop segment 201 is d1, and the width of at least a portion of the second winding loop segment 202 is d2, wherein d1 is greater than d2.

[0039] In another embodiment, each of the electromagnetic heating units 2 includes a support 21 and a winding unit 22. Each winding unit 22 is arranged in a ring and has a first winding loop segment 201 near the center of the distribution area and a second winding loop segment 202 near the edge of the distribution area. In the pair of winding units 22, the current directions of the two winding units 22 are set to be opposite, so that opposite magnetic poles are formed in the middle of the two winding units 22. In at least one of the winding units 22, the winding center of the winding unit 22 is located on the side of its geometric center near the second winding loop segment 202.

[0040] It should be noted that the shapes of the multiple winding units 22 mentioned in this application can be the same or different. Each winding unit 22 is formed by winding multiple turns of coil. Each turn of coil in each winding unit 22 can be regarded as a ring structure. Of course, the ring structure is not limited to being circular; it can be square or elliptical. Each winding unit 22 can be laid flat along a surface area, which can be a plane or a curved surface. Each winding unit 22 can also be bent. The specifics can be determined according to the actual situation, and the embodiments in this specification do not limit this.

[0041] "Current direction" refers to the direction in which the current of the winding unit 22 flows clockwise or counterclockwise. "The current directions of the two winding units 22 are set to be opposite" means that when the current direction of one winding unit 22 is clockwise, the current direction of the other winding unit 22 is counterclockwise.

[0042] It should be noted that, according to Ampere's law: if you grasp a current-carrying solenoid with your right hand, pointing your four fingers in the direction of the current, then the end pointed to by your thumb is the N-terminal of the solenoid. Please refer to [link to relevant documentation]. Figure 6 and Figure 7 When the current directions of the two winding units 22 are set to opposite, a closed magnetic field is formed between the two winding units 22. For example, one of the two winding units 22 is set as a first winding unit and the other as a second winding unit. When the first winding unit and the second winding unit are laid out horizontally, a magnetic pole N is formed on the upper side and a magnetic pole S is formed on the lower side of the first winding unit. At the same time, a magnetic pole S is formed on the upper side and a magnetic pole N is formed on the lower side of the second winding unit. In this way, the magnetic field lines go from the N pole of the first winding unit to the S pole of the second winding unit, then from the S pole of the second winding unit to the N pole, then from the N pole of the second winding unit to the S pole of the first winding unit, and then from the S pole of the first winding unit back to the N pole of the first winding unit, thereby forming a closed magnetic field.

[0043] With this configuration, when a pair of winding units 22 are energized, the closed magnetic field formed between the two irregularly shaped magnetic poles created by the two winding units 22 can couple with the pot wall, which is relatively far from the winding units 22, thereby heating the pot wall. According to Ampere's law, the magnetic poles formed by the winding units 22 correspond to the inner ring region of the annulus. When "d1 is greater than d2" or "the winding center is located on the side of its geometric center near the second winding ring segment 202", the magnetic poles of the corresponding winding units 22 are formed in the region near the outer periphery of the distribution area, thereby achieving the largest possible heating range for the pot wall.

[0044] Thus, by placing the magnetic pole formed in the middle of at least one winding unit 22 close to the side of the corresponding second winding loop segment 202, the magnetic pole formed in the middle of the winding unit 22 can be closer to the edge of the distribution area, and can couple with the position of the corresponding pot wall, thereby increasing the heating range of the pot wall and improving the uniformity of heating the bottom and wall of the pot.

[0045] The control device 4 includes a memory, a processor, and a control program for the cooking appliance 100 stored in the memory and executable on the processor. The control program for the cooking appliance 100 is configured to implement the steps of the control method for the cooking appliance 100.

[0046] Reference Figure 12 , Figure 12 This is a schematic diagram of the control device 44 of the hardware operating environment involved in the embodiment of the present invention.

[0047] like Figure 12 As shown, the control device 44 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. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be high-speed random access memory (RAM) or stable non-volatile memory (NVM), such as a disk drive. The memory 1005 may also optionally be a storage device independent of the aforementioned processor 1001.

[0048] Those skilled in the art will understand that Figure 12 The structure shown does not constitute a limitation on the control device 44, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0049] like Figure 12 As shown, the memory 1005, which serves 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 100.

[0050] exist Figure 12 In the control device 44 shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the control device 44 of the present invention can be set in the control device 44. The control device 44 calls the control program of the cooking appliance 100 stored in the memory 1005 through the processor 1001 and executes the control method of the cooking appliance 100 provided in the embodiment of the present invention.

[0051] This invention provides a control method for a heating device, referring to... Figure 13 , Figure 13 This is a schematic flowchart of an embodiment of a control method for a cooking appliance 100 according to the present invention.

[0052] The control method for the cooking appliance 100 includes the following steps: Step S10: Upon receiving a cooking instruction, obtain the cooking parameters in the cooking instruction, including the bottom dimension parameters of the cookware 200.

[0053] In this embodiment, the cooking utensil 100 will match the corresponding cooking program when it is used for pots 200 of different shapes and sizes, and the cooking parameters will be different for pots 200 of different shapes and sizes.

[0054] For example, when the cooking instruction is "wok", the cooking control device 4 determines the cooking parameters based on the "wok" cooking instruction, and the bottom size of the corresponding pot 200 is a larger size, thus determining that the pot 200 was previously a "large pot"; when the cooking instruction is "milk pot", the cooking control device 4 determines the cooking parameters based on the "milk pot" cooking instruction, and the bottom size of the corresponding pot 200 is a smaller size, thus determining that the pot 200 was previously a "small pot"; when the cooking instruction is "normal", the cooking control device 4 determines the cooking parameters based on the "normal" cooking instruction, thus determining that the pot 200 was previously a "medium pot"; when the cooking instruction is "normal", the cooking control device 4 determines the cooking parameters based on the "normal" cooking instruction, thus determining that the pot 200 was previously a "medium pot".

[0055] Of course, cooking instructions can also be input directly by the customer based on the size of the cookware, such as "large pot", "small pot", "medium pot", "irregularly shaped pot", etc.

[0056] Step S20: Based on the bottom dimension parameters of the cookware 200, control the drive mechanism 3 and the plurality of electromagnetic heating units 2 to work so that the positions of the plurality of electromagnetic heating units 2 correspond to the bottom dimension of the cookware 200.

[0057] In this embodiment, the size of the cookware 200 varies depending on its function, and the bottom dimension parameter of the cookware 200 reflects the heating area required for that cookware 200. The plurality of electromagnetic heating units 2 can be driven by the driving mechanism 3 and are movably arranged in a direction close to and far from the center of the distribution area. When the plurality of electromagnetic heating units 2 are close to each other, the resulting heating range is smaller, suitable for cookware 200 with a smaller bottom dimension; when the plurality of electromagnetic heating units 2 are far apart, the resulting heating range is larger, suitable for cookware 200 with a larger bottom dimension.

[0058] In the technical solution provided by the present invention, the bottom size parameters of the cookware 200 are obtained by receiving cooking instructions, thereby determining the required heating range and controlling the drive mechanism 3 to drive the multiple electromagnetic heating units 2 to move, thereby matching the optimal magnetic pole position and adjusting the size of the heatable range so that the heating range can be adapted to the bottom size of the cookware 200 to heat the cookware 200. This solves the problem that multiple pairs of magnetic pole coils have poor adaptability to the cookware 200 and are only suitable for heating cookware 200 of a suitable size.

[0059] In one embodiment, reference is made to Figure 14 The step of obtaining the cooking parameters in the cooking instruction includes: Step S11: Obtain the detection parameters generated by the interaction between the plurality of electromagnetic heating units 2 and the pot 200 placed in the heating zone.

[0060] It should be noted that when the induction cooker detects the cookware 200, it generally utilizes alternating current passing through a coil to generate a continuously changing alternating magnetic field, in which eddy currents are generated within the conductor of the alternating magnetic field. Based on electromagnetic induction and the eddy current effect, since the cookware 200 itself generates some magnetic fields during the heating process, the cookware 200 detection unit determines whether the cookware 200 is compatible with the multiple electromagnetic heating units 2 by detecting changes in these magnetic fields. Therefore, the acquired detection parameters can provide a basis for subsequent judgments regarding the cookware 200.

[0061] Step S12: Determine the bottom dimension parameters of the cookware 200 based on the detection parameters.

[0062] In this embodiment, because the cookware 200 varies in size, the induced current, frequency, and waveform generated by the electromagnetic heating unit 2 interacting with the cookware 200 are all different. Therefore, the size of the cookware 200 can be inferred by measuring the magnitude of this current. Larger cookware 200 will generate a larger current, while smaller cookware 200 will generate a smaller current. A mapping database can be established by mapping different frequencies to different cookware 200 sizes, and the size of the cookware 200 can be determined based on the detected different frequency characteristics; alternatively, the size and shape of the cookware 200 can be inferred by analyzing the waveform of the feedback signal.

[0063] In the technical solution provided by the present invention, if a normal change is detected, it indicates that the coupling between the cookware 200 and the multiple electromagnetic heating units 2 is good, and the induction cooker can work normally; if an abnormality or no change is detected, it may indicate that the cookware 200 is not suitable for use or that the coupling is poor.

[0064] In one embodiment, the detection parameter includes the number of pulses. It is understood that the electromagnetic heating unit 2 generates a high-frequency alternating magnetic field during operation, and the metal at the bottom of the cookware 200 responds to this magnetic field. When the cookware 200 is well coupled with the electromagnetic heating component, the system adjusts the operating frequency according to the characteristics of the cookware 200 to achieve optimal energy transfer and heating effect. If the coupling between the cookware 200 and the heating component is poor or the cookware is incorrectly placed, the system will detect changes in the magnetic field, affecting the matching of the pulse resonance number. By monitoring these changes in the pulse resonance number, the system can determine whether the cookware 200 is suitable and whether the coupling is good.

[0065] The plurality of electromagnetic heating units 2 have initial positions that are close to each other during their travel, and a plurality of working positions that are sequentially arranged in a direction away from the center of the heating zone. It is understood that when the plurality of electromagnetic heating units 2 move to each of the working positions, the heating range formed and the range of the magnetic field acting are different.

[0066] Reference Figure 15 The step of determining the bottom dimension parameters of the cookware 200 based on the detection parameters includes: Step S121: Obtain the real-time pulse count of the plurality of electromagnetic heating units 2 moving sequentially from the initial position to the plurality of working positions.

[0067] It is understandable that when the detection begins, the multiple electromagnetic heating units 2 are first switched to the initial position. As the multiple electromagnetic heating units 2 gradually move away from each other, the number of pulses generated is recorded in sequence to optimize the performance of the algorithm and obtain the required detection information one by one.

[0068] Step S122: When the current pulse count is less than the previous pulse count, determine the previous working position as the maximum working position, and determine the bottom dimension parameters of the cookware 200 based on the maximum working position.

[0069] It is understandable that for a well-coupled cookware 200, the number of pulses is usually more, while for a poorly coupled cookware 200, the number of pulses is less. When the plurality of electromagnetic heating units 2 are well coupled with the cookware 200, the corresponding detection data are also the same. When the plurality of electromagnetic heating units 2 extend beyond the bottom of the cookware 200, the number of pulses decreases.

[0070] In the technical solution provided by this invention, the working range of the plurality of electromagnetic heating units 2 is expanded sequentially from the initial position, and detection data is generated sequentially during their movement. When the current pulse count is less than the previous pulse count, it indicates that the current working position of the plurality of electromagnetic heating units 2 exceeds the bottom range of the cookware 200. In order to ensure good coupling between the plurality of electromagnetic heating units 2 and the cookware 200, the previous working position is determined as the maximum working position of the plurality of electromagnetic heating units 2. When the plurality of electromagnetic heating units 2 heat the cookware 200 in the area within the maximum working position range, they can fully couple with the cookware 200 to achieve the most efficient energy conversion.

[0071] It should be noted that the pot 200 is generally designed with a round bottom. However, when the pot 200 is designed with an irregular shape, such as a square or oval shape, the distance between the center of the distribution area and the peripheral edge of the bottom of the pot 200 is not the same, while the distance between each electromagnetic heating unit 2 and the center of the distribution area is the same. In this case, when the multiple electromagnetic heating units 2 are tested, some of the electromagnetic heating units 2 can be coupled normally with the pot 200, while some of the electromagnetic heating units 2 cannot be coupled normally with the pot 200.

[0072] In one embodiment, step S121: obtaining the real-time pulse count of the plurality of electromagnetic heating units 2 moving sequentially from the initial position to the plurality of working positions includes: Step S1211: Under the current working position, sequentially obtain the real-time pulse count of each electromagnetic heating unit 2.

[0073] In this embodiment, when the plurality of electromagnetic heating units 2 are moved to a certain working position, each electromagnetic heating unit 2 is correspondingly arranged with a part of the cookware 200. The real-time pulse count of each electromagnetic heating unit 2 can reflect the coupling between the electromagnetic heating unit 2 and the corresponding part of the cookware 200.

[0074] Step S122: When the current pulse count is less than the previous pulse count, the steps to determine the previous working position as the maximum working position include: Step S1221: When the number of pulses in the current electromagnetic heating unit 2 is less than the number of pulses in the previous test, the previous working position is determined as the maximum working position.

[0075] It is understandable that when the cookware 200 is an irregularly shaped cookware 200, such as an elliptical one, the area at the bottom of the cookware 200 in the short axis direction will first experience a decrease in the number of coupling pulses with the corresponding electromagnetic heating unit 2. If the current working position of the electromagnetic heating unit 2 is determined to be the maximum working position at this time, the outer area in the long axis direction of the cookware 200 will not be able to correspond with the electromagnetic heating unit 2. For the cookware 200, the heat is concentrated in the central area, resulting in uneven heating.

[0076] As the plurality of electromagnetic heating units 2 move further away from each other in sequence, expanding their working range, the plurality of electromagnetic heating units 2 will approach or even exceed the area corresponding to the long axis of the cookware 200 in sequence. When the last pulse count detected by one of the electromagnetic heating units 2 decreases, it indicates that the plurality of electromagnetic heating units 2 have now exceeded the area covered by the bottom of the cookware 200. Therefore, the previous working position is determined as the maximum working position. When the plurality of electromagnetic heating units 2 are in the maximum working position, it indicates that, under the premise of good coupling with the cookware 200, the plurality of electromagnetic heating units 2 can also cover the maximum range of the bottom of the cookware 200.

[0077] In the technical solution provided by the present invention, when the cookware 200 is an irregularly shaped cookware 200, by sequentially obtaining the number of pulses of each electromagnetic heating unit 2 at the current working position, the maximum size of the cookware 200 can be accurately determined, thereby accurately determining the maximum working position, ensuring that the maximum area at the bottom of the cookware 200 can be electromagnetically heated, thereby avoiding uneven heating.

[0078] In one embodiment, step S20: controlling the operation of the drive mechanism 3 and the plurality of electromagnetic heating units 2 according to the bottom size parameters of the pot 200 includes: Step S21: Control the plurality of electromagnetic heating units 2 to move to the maximum working position to heat the cookware 200.

[0079] It is understandable that once the maximum working position is determined, and thus the maximum heating range when the plurality of electromagnetic heating units 2 can be well coupled with the cookware 200 is also determined, then after receiving the cooking command, the area of ​​the largest region of the bottom of the pot can be heated.

[0080] When the cookware 200 is an irregularly shaped cookware 200, it also achieves heating of the maximum bottom area of ​​the irregularly shaped cookware 200.

[0081] In the technical solution provided by the present invention, by heating the plurality of electromagnetic heating units 2 at the maximum working position, the cooking appliance 100 can provide the largest possible heating area and improve heating efficiency.

[0082] In one embodiment, step S20: controlling the operation of the drive mechanism 3 and the plurality of electromagnetic heating units 2 according to the bottom size parameters of the pot 200 includes: Step S22: Control the plurality of electromagnetic heating units 2 to move between the initial position and the maximum working position, and heat the cookware 200.

[0083] It is understandable that when the cookware 200 is large, when the multiple electromagnetic heating units 2 are in the maximum working position, there may be a blank heating area in the middle of the distribution area, which will result in uneven heating in the middle of the cookware 200.

[0084] In the technical solution provided by the present invention, the plurality of electromagnetic heating units 2 are moved between the initial position and the maximum working position, and the multiple cookware 200 achieves scanning heating, avoiding uneven heating in the central area of ​​the cookware 200.

[0085] In one embodiment, step S20: controlling the operation of the drive mechanism 3 and the plurality of electromagnetic heating units 2 according to the bottom size parameters of the pot 200 includes: Step S23: According to the cooking command, control the plurality of electromagnetic heating units 2 to move to a working position between the initial position and the maximum working position, and heat the pot 200.

[0086] In the technical solution provided by the present invention, when a user needs to heat a specified area, the multiple electromagnetic heating units 2 can be controlled to move to a working position between the initial position and the maximum working position according to the user's special cooking instructions, so that the multiple electromagnetic heating units 2 can heat the area at the bottom of the specified pot 200 to meet the user's diverse needs.

[0087] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for controlling a cooking utensil, characterized in that, The cooking appliance includes a main body and a plurality of electromagnetic heating units disposed within the main body. The plurality of electromagnetic heating units are spaced apart along a circumferential direction. The main body has a heating zone for placing a pot. The plurality of electromagnetic heating units are used to electromagnetically heat the pot placed in the heating zone. The plurality of electromagnetic heating units are distributed along a distribution area opposite to the heating zone and are movably disposed in directions near and away from the center of the distribution area. The cooking appliance also includes a drive mechanism for driving the electromagnetic heating units. The control method of the cooking appliance includes the following steps: Upon receiving a cooking instruction, the cooking parameters in the cooking instruction are obtained, including the bottom dimension parameters of the cookware; Based on the bottom dimension parameters of the cookware, the drive mechanism and the plurality of electromagnetic heating units are controlled to operate so that the positions of the plurality of electromagnetic heating units correspond to the bottom dimension of the cookware.

2. The control method of a cooking appliance according to claim 1, characterized in that, The step of obtaining the cooking parameters in the cooking instruction includes: Acquire detection parameters generated by the interaction between the plurality of electromagnetic heating units and the cookware placed in the heating zone; Based on the detection parameters, determine the bottom dimensions of the cookware.

3. The control method of a cooking appliance according to claim 2, characterized in that, The detection parameters include the number of pulses; The plurality of electromagnetic heating units have initial positions that are close to each other during their active stroke, and a plurality of working positions that are sequentially arranged in a direction away from the center of the heating zone; The step of determining the bottom dimension parameters of the cookware based on the detection parameters includes: The real-time pulse count of the plurality of electromagnetic heating units moving sequentially from the initial position to the plurality of working positions is obtained; When the current pulse count is less than the previous pulse count, the previous working position is determined as the maximum working position, and the bottom size parameters of the cookware are determined based on the maximum working position.

4. The control method for cooking appliances as described in claim 3, characterized in that, The step of obtaining the real-time pulse count of the plurality of electromagnetic heating units moving sequentially from the initial position to the plurality of working positions includes: At the current working position, the real-time pulse count of each electromagnetic heating unit is obtained sequentially; The step of determining the previous working position as the maximum working position when the current pulse count is less than the previous pulse count includes: When the number of pulses in the current electromagnetic heating unit is less than the number of pulses in the previous detection, the previous working position is determined as the maximum working position.

5. The control method for cooking appliances as described in claim 3, characterized in that, The step of controlling the operation of the drive mechanism and the plurality of electromagnetic heating units according to the bottom size parameters of the pot includes: The multiple electromagnetic heating units are controlled to move to the maximum working position to heat the cookware.

6. The control method for cooking appliances as described in claim 3, characterized in that, The step of controlling the operation of the drive mechanism and the plurality of electromagnetic heating units according to the bottom size parameters of the pot includes: The plurality of electromagnetic heating units are controlled to move between the initial position and the maximum working position to heat the cookware.

7. The method for controlling a cooking appliance as described in claim 3, characterized in that, The step of controlling the operation of the drive mechanism and the plurality of electromagnetic heating units according to the bottom size parameters of the pot includes: According to the cooking command, the plurality of electromagnetic heating units are controlled to move to a working position between the initial position and the maximum working position, and the cookware is heated.

8. A cooking utensil, characterized in that, include: The main body has a heating zone for placing cookware. as well as, Multiple electromagnetic heating units are spaced apart along a circumferential direction. These units are used to electromagnetically heat a cookware placed in the heating zone. The units are distributed along a distribution area opposite to the heating zone and are movably positioned in directions near and away from the center of this distribution area. A drive mechanism is used to drive the movement of the plurality of electromagnetic heating units; A control device is electrically connected to the drive mechanism and the plurality of electromagnetic heating units, and is used to control the operation of the drive mechanism and the plurality of electromagnetic heating units.

9. The cooking appliance as described in claim 8, characterized in that, The control device includes a memory, a processor, and a control program for a cooking appliance stored in the memory and executable on the processor, the control program being configured to implement the steps of the control method for the cooking appliance as described in any one of claims 1 to 7.

10. The cooking appliance as described in claim 8, characterized in that, Each of the electromagnetic heating units has a rotating shaft extending along a first direction, the rotating shaft being eccentrically arranged, and the outer peripheral wall of the rotating shaft having a first toothed portion; The drive mechanism includes: A driving member, rotatably disposed about a rotation axis extending along the first direction, has a plurality of second teeth spaced apart circumferentially on the driving member, wherein a plurality of rotating shafts are spaced apart circumferentially on the driving member, and each first tooth meshes with a corresponding second tooth, the driving member being used to drive a plurality of electromagnetic heating units to rotate during rotation; and The drive motor has an output shaft extending along the first direction, and the outer periphery of the output shaft is provided with a gear that meshes with the second toothed portion.

11. The cooking appliance as described in claim 8, characterized in that, Each of the electromagnetic heating units includes: stents; and, The winding unit is arranged in a ring, having a first winding loop segment near the center of the distribution area and a second winding loop segment near the edge of the distribution area. In two adjacent electromagnetic heating units, the current directions of the two winding units are set to be opposite, so that opposite magnetic poles are formed in the middle of the two winding units, and in at least one winding unit, the width of at least a portion of the first winding loop segment is d1, the width of at least a portion of the second winding loop segment is d2, and d1 is greater than d2.

12. The cooking appliance as described in claim 8, characterized in that, Each of the electromagnetic heating units includes: stents; and, The winding unit is arranged in a ring, having a first winding loop segment near the center of the distribution area and a second winding loop segment near the edge of the distribution area. In two adjacent electromagnetic heating units, the current directions of the two winding units are set to be opposite, so that opposite magnetic poles are formed in the middle of the two winding units, and in at least one winding unit, the winding center of the winding unit is located on the side of its geometric center close to the second winding loop segment.

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