A stirring assembly, a cooking apparatus and a control method thereof

Abstract

The present application relates to the technical field of cooking equipment, in particular to a stirring assembly, a cooking device and a control method thereof. The stirring assembly comprises a plurality of first electromagnetic coils, a plurality of permanent magnets, an extension mechanism and a stirring piece. The plurality of first electromagnetic coils are distributed at intervals on the edge of the supporting base of the pot cover. The plurality of permanent magnets are distributed at intervals on the edge of the rotary structure of the pot cover, and each permanent magnet corresponds to a first electromagnetic coil. The first electromagnetic coil is used to generate a first electromagnetic field under the condition of being electrified, so that the magnetic force generated by the interaction between the first electromagnetic field and the permanent magnet located therein drives the permanent magnet to move along the circumference of the rotary structure. The top of the extension mechanism is arranged at the middle part of the rotary structure, and the bottom of the extension mechanism is provided with the stirring piece. The extension mechanism is used to drive the stirring piece to move up and down relative to the rotary structure. The stirring assembly not only occupies a small space, but also can realize the circumferential and up-and-down stir-frying of the food materials, and the stir-frying is more sufficient.

Description

Technical Field

[0001] This invention relates to the field of cooking equipment technology, and in particular to a stirring assembly, a cooking device, and a control method thereof. Background Technology

[0002] Existing cooking equipment typically uses stirring components located on the side or bottom of the pot, driven by a motor to rotate the stirring blades and stir-fry the ingredients. However, this type of stirring blade not only occupies the food area but also results in a large overall space usage for the stirring assembly. Furthermore, the stirring methods used in existing cooking equipment are relatively simple, leading to poor stir-frying results. Summary of the Invention

[0003] To address the technical problems of existing cooking equipment, such as large space occupation of the stirring components, single stirring method, and poor stir-frying effect on ingredients, this application discloses a stirring component, which includes several first electromagnetic coils, several permanent magnets, a telescopic mechanism, and a stirring element.

[0004] Several first electromagnetic coils are spaced apart on the edge of the support base of the pot lid;

[0005] Several permanent magnets are spaced apart on the edge of the rotating structure of the pot lid, and each permanent magnet corresponds to a first electromagnetic coil;

[0006] The top of the telescopic mechanism is located in the middle of the rotating structure, and the bottom of the telescopic mechanism is equipped with a stirring component; the telescopic mechanism is used to drive the stirring component to move up and down relative to the rotating structure.

[0007] The first electromagnetic coil is used to generate a first electromagnetic field under energized conditions, so that the magnetic force generated by the interaction between the first electromagnetic field and the permanent magnet located therein drives the permanent magnet to move circumferentially along the rotating structure, thereby driving the rotation of the rotating structure connected to the permanent magnet.

[0008] In one exemplary embodiment, the telescopic mechanism includes a drive motor, a rotating rod, a sliding connector, a sliding sleeve, and a rotating sleeve;

[0009] The drive motor is connected to the rotating rod;

[0010] The rotating rod has a continuous groove channel around its circumference, and the length direction of the groove channel extends along the axis of the rotating rod.

[0011] The sliding sleeve has an open groove along the axis of the rotating rod, and the sliding sleeve is fitted onto the rotating rod. The top of the sliding sleeve is connected to the housing of the drive motor.

[0012] The rotating sleeve is provided with a fixed structure, one end of the sliding connector is located in the groove, and the other end of the sliding connector passes through the open groove and is connected to the fixed structure.

[0013] The agitator is connected to the end of the rotating sleeve.

[0014] In one exemplary embodiment, the drive motor is used to drive the rotation of the rotating rod to realize the up-and-down movement of the rotating sleeve connected to the rotating rod.

[0015] In one exemplary embodiment, the support base includes opposing first and second surfaces;

[0016] A first electromagnetic coil is provided on the edge of the first surface;

[0017] The edge of the second side is provided with a metal clamping element;

[0018] The length of the metal clamping member along the first direction is greater than the length of the rotating structure along the first direction; the first direction is the extension direction from the first surface toward the second surface.

[0019] In one exemplary embodiment, when the stirring assembly is placed on the pot body, the metal clamping member abuts against the top of the pot body.

[0020] In one exemplary embodiment, the first electromagnetic coil is further used to form a second electromagnetic field by means of a second electromagnetic coil disposed corresponding to its position under energized conditions, so that the magnetic force generated by the interaction between the second electromagnetic field and the permanent magnet located therein drives the permanent magnet to move circumferentially along the rotating structure, thereby driving the rotation of the rotating structure connected to the permanent magnet; the second electromagnetic coil is located on the pot body; and the magnetic poles of the ends of the first electromagnetic coil and the second electromagnetic coil located adjacent to each other are opposite.

[0021] In one exemplary embodiment, the number of energized first electromagnetic coils is proportional to the rotational speed of the rotating structure.

[0022] In another aspect, this application discloses a cooking device, which includes a pot body, a pot lid, and the aforementioned stirring assembly.

[0023] In one exemplary embodiment, a pot base is also included;

[0024] The pot base has a recessed area, and the pot body is located within the recessed area;

[0025] The outer surface of the pot base is equipped with a slider for sliding connection with the guide rail of the outer shell.

[0026] This application discloses, in another aspect, a control method for a cooking apparatus, applied to the aforementioned cooking apparatus, which further includes a control unit electrically connected to a first electromagnetic coil; the method includes:

[0027] Upon receiving the first speed control signal, the energizing sequence of each of the several first electromagnetic coils is controlled based on the first speed control signal.

[0028] Upon receiving the second speed control signal, the speed of the drive motor of the telescopic mechanism is controlled based on the second speed control signal.

[0029] By adopting the above technical solution, the stirring assembly provided in this application has the following beneficial effects:

[0030] The stirring assembly includes several first electromagnetic coils, several permanent magnets, a telescopic mechanism, and a stirring element. The first electromagnetic coils are spaced apart along the edge of the supporting base of the pot lid. The permanent magnets are spaced apart along the edge of the rotating structure of the pot lid, each corresponding to one first electromagnetic coil. The first electromagnetic coils generate a first electromagnetic field when energized, causing the magnetic force generated by the interaction between the first electromagnetic field and the permanent magnets to drive the permanent magnets to move circumferentially along the rotating structure. This, in turn, drives the rotation of the rotating structure connected to the permanent magnets, thus achieving electromagnetic drive rotation of the stirring element located on the pot lid. The overall structure occupies a small space. The top of the telescopic mechanism is located in the middle of the rotating structure, and the stirring element is located at the bottom of the telescopic mechanism. The telescopic mechanism drives the stirring element to move up and down relative to the rotating structure. This makes the stirring assembly not only space-saving but also capable of circumferential and vertical stirring of the ingredients, resulting in more thorough stir-frying. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of a stirring assembly provided in an embodiment of this application;

[0033] Figure 2 This is a cross-sectional view of a telescopic mechanism provided in an embodiment of this application;

[0034] Figure 3 This is an exploded view of a telescopic mechanism provided in an embodiment of this application;

[0035] Figure 4 This is a distribution diagram of a first electromagnetic coil and a permanent magnet provided in an embodiment of this application;

[0036] Figure 5 This is a distribution diagram of a first electromagnetic coil provided in an embodiment of this application;

[0037] Figure 6 This is a partial installation diagram of a stirring assembly, a lid, and a pot body provided in an embodiment of this application;

[0038] Figure 7 This is a distribution diagram of a first electromagnetic coil, a permanent magnet, and a second electromagnetic coil provided in an embodiment of this application;

[0039] Figure 8 This is an exploded view of a stirring assembly, a lid, and a pot body provided in an embodiment of this application;

[0040] Figure 9 This is a schematic diagram of the structure of a cooking device provided in an embodiment of this application;

[0041] Figure 10 This is an exploded view of a cooking device provided in an embodiment of this application;

[0042] Figure 11 This is a schematic diagram of another cooking device provided in an embodiment of this application.

[0043] The following is supplementary explanation of the attached figures:

[0044] 1-Support structure; 101-Support base; 1011-First surface; 1012-Second surface; 1013-Receiving groove; 1014-Cover plate; 1015-Pressure relief valve; 1016-Support component; 102-Metal clamping component; 103-First electromagnetic coil; 2-Rotating structure; 21-Permanent magnet; 22-Second cover plate; 23-First cover plate; 3-Telescopic mechanism; 31-Drive motor; 311-Rotating shaft; 32-Rotating rod; 321-Groove channel ; 33-Sliding connector; 34-Sliding sleeve; 341-Opening channel; 35-Rotating sleeve; 351-Fixed structure; 36-Gear assembly box; 37-Gear assembly; 4-Pot body; 41-Second electromagnetic coil; 5-Pot base; 51-Recessed area; 52-Placement slot; 6-Stirring component; 61-Rotating shaft; 7-Door body; 8-Control panel; 9-Hall sensor; 10-Pot base support; 11-Bearing sleeve; 12-Bearing; 13-Bearing seat. Detailed Implementation

[0045] The technical solutions of the embodiments of this application 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 this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0046] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0047] When a numerical range is disclosed herein, the range is considered continuous and includes the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Furthermore, when the range refers to an integer, it includes every integer between the minimum and maximum values ​​of the range. Additionally, when multiple ranges are provided to describe a feature or characteristic, the ranges may be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges to which they are included. For example, a specified range from “1 to 10” should be considered to include any and all subranges between the minimum value 1 and the maximum value 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, etc.

[0048] Example 1

[0049] Typically, automatic cooking equipment includes a pot body, a lid, and a stirring blade. The stirring blade is used to stir-fry the ingredients added to the pot, so it needs to be able to rotate in a preset direction to simulate the manual stir-frying process. Generally, the stirring blade is located at the bottom or side of the pot body. For example, when the stirring blade is installed at the bottom of the pot body, a drive motor can be set on the pot base, which can drive the stirring blade to rotate around the circumference of the pot body. When the stirring blade is installed on the side of the pot body, the stirring blade can be an arc-shaped structure, with one end of the arc-shaped structure connected to a drive motor located on the outside of the pot body, so that the drive motor can drive the stirring blade to rotate. It is understood that existing technologies all drive the rotation of the stirring blade through a drive motor, which requires a dedicated space on the pot base to house the drive motor, making the overall structure of the equipment larger. Moreover, since the heating area of ​​the pot body is usually located at the bottom, the above-mentioned placement of the stirring blade will occupy the heating area, thus affecting the evenness of heating of the food. In addition, the existing method of only rotating and stir-frying the ingredients is also relatively simple, affecting the cooking effect of the ingredients.

[0050] For this purpose, please refer to Figure 1 This application discloses a stirring assembly, which includes a plurality of first electromagnetic coils 103, a plurality of permanent magnets 21, a telescopic mechanism 3, and a stirring element 6; the plurality of first electromagnetic coils 103 are spaced apart on the edge of the support base 101 of the pot lid; the plurality of permanent magnets 21 are spaced apart on the edge of the rotating structure 2 of the pot lid, each permanent magnet 21 corresponding to one first electromagnetic coil 103; the top of the telescopic mechanism 3 is located in the middle of the rotating structure 2, and the bottom of the telescopic mechanism 3 is provided with the stirring element 6; the telescopic mechanism 3 is used to drive the stirring element 6 to move up and down relative to the rotating structure 2; the first electromagnetic coils 103 are used to generate a first electromagnetic field under energized conditions, so that the magnetic force generated by the interaction between the first electromagnetic field and the permanent magnets 21 located therein pushes the permanent magnets 21 to move circumferentially along the rotating structure 2, thereby driving the rotation of the rotating structure 2 connected to the permanent magnets 21. Because this application uses electromagnetic drive, it effectively utilizes the space of the pot lid, eliminating the need for additional space on the lid or pot body 4 to house the drive motor 31. Furthermore, by placing the stirring element 6 on the lid, it avoids occupying the food heating area. When adding ingredients, the stirring element 6 can be removed by taking up the lid, facilitating ingredient addition. This stirring component also enables circumferential and vertical stirring of the ingredients, resulting in more thorough stir-frying.

[0051] Optionally, the stirring assembly is used in a cooking device, specifically on a pot lid, which includes a support structure 1, and the support structure 1 includes the aforementioned support base 101.

[0052] In one exemplary implementation, please refer to Figure 2 and Figure 3 The telescopic mechanism 3 includes a drive motor 31, a rotating rod 32, a sliding connector 33, a sliding sleeve 34, and a rotating sleeve 35. The drive motor 31 is connected to the rotating rod 32. The rotating rod 32 has a continuous groove 321 surrounding its circumference, and the length direction of the groove 321 extends along the axis of the rotating rod 32. The sliding sleeve 34 has an open groove 341 along the axis of the rotating rod 32, and the sliding sleeve 34 is fitted onto the rotating rod 32. The top of the sliding sleeve 34 is connected to the housing of the drive motor 31. The rotating sleeve 35 has a fixing structure 351. One end of the sliding connector 33 is located in the groove 321, and the other end of the sliding connector 33 passes through the open groove 341 and is connected to the fixing structure 351. The stirring component 6 is connected to the end of the rotating sleeve 35. Optionally, the groove 321 can be an 8-shaped groove, with one end of the sliding connector embedded in the groove 321. Alternatively, the groove 321 can also be other curved or straight grooves surrounding the rotating rod 32, without limitation. Optionally, the fixing structure 351 can be a through hole structure on the rotating sleeve 35, allowing the other end of the sliding connector to be inserted therein, thereby linking the rotating rod 32 and the rotating sleeve 35 together. Optionally, depending on transmission requirements, a gear assembly box 36 is also provided between the drive motor 31 and the rotating rod 32, containing a gear assembly 35. Optionally, the rotating rod 32 is connected to the drive motor 31 via a rotating shaft 311 extending from the drive motor 31, thereby rotating the rotating rod 32 based on the driving force of the drive motor 31. When the drive motor 31 is working, the rotating rod 32 connected to it can also rotate. The figure-eight groove on its surface limits the movement trajectory of the sliding connector 33. It can move vertically from the bottom of the opening channel 341 to the top of the opening channel 341 and then move down to the bottom of the opening channel 341, repeating this process. This is a reciprocating motion in the y direction, which can drive the rotating sleeve 35 connected to the sliding connector 33 to move up and down. This, in turn, drives the stirring component 6 connected to the rotating sleeve 35 to move up and down. In other words, the drive motor 31 is used to drive the rotation of the rotating rod 32 to achieve the up and down movement of the rotating sleeve 35 connected to the rotating rod 32.

[0053] To better understand the beneficial effects of the technical solution of this application, the principle of the electromagnetically driven stirring element 6 of this application will be briefly described below:

[0054] Taking the example of two sets of electromagnetic drive components on the pot lid, each set of electromagnetic drive components includes a first electromagnetic coil 103 and a permanent magnet 21. The magnetic poles of adjacent sets of first electromagnetic coils 103 are opposite after being energized, and the magnetic poles of adjacent sets of permanent magnets 21 are also opposite. Please refer to [link / reference]. Figure 4The first electromagnetic coil 103 of the first group has N and S (i.e., south and north poles) along the y-direction, and the permanent magnet 21 of the first group has S and N along the y-direction; the first electromagnetic coil 103 of the second group has S and N along the y-direction, and the permanent magnet 21 of the second group has N and S along the y-direction. Therefore, when it is necessary to start the stirring component 6 to rotate, the direction of the current in the first electromagnetic coil 103 can be controlled to make the magnetic pole distribution of the two groups of electromagnetic coils as follows. Figure 4 As shown, through the interaction between the first electromagnetic coil 103 and the permanent magnet 21, based on the fundamental principle that like magnetic poles repel and unlike magnetic poles attract, the magnetic pole S of the second set of first electromagnetic coils 103 has a magnetic attraction force on the magnetic pole N of the first set of permanent magnets 21, and the magnetic pole N of the first set of first electromagnetic coils 103 has a magnetic repulsion force on the magnetic pole N of the first set of permanent magnets 21. Therefore, under the action of these two forces, the first set of permanent magnets 21 will rotate in the x-direction. Once the permanent magnet 21 has rotated to the designated position, it can be further rotated by changing the first... The direction of the current in the electromagnetic coil 103 changes the magnetic pole distribution of the first electromagnetic coil 103 in the first and second groups. After the current direction changes, the magnetic poles of the first electromagnetic coil 103 along the y-direction are S and N respectively; the magnetic poles of the first electromagnetic coil 103 in the second group along the y-direction are N and S respectively. Thus, by continuously changing the current direction, the magnetic pole distribution of the two groups of first electromagnetic coils 103 can be changed, thereby allowing the permanent magnet 21 to move continuously along the axial direction of the rotary structure 2, realizing the continuous rotation of the rotary structure 2.

[0055] As can be understood from the above analysis, when designing the first electromagnetic coil 103 in this application, for two or more first electromagnetic coils 103, the magnetic pole distribution of adjacent first electromagnetic coils 103 is opposite under energized conditions. Generally, an electromagnetic coil can be formed by winding insulated wires around a tube. Therefore, for adjacent electromagnetic coils, their wire winding directions can be designed to be opposite, and then directly connected to the same power supply. Alternatively, all the first electromagnetic coils 103 can have the same structure (including the same winding direction of the insulated wires), and then the wires of two adjacent first electromagnetic coils 103 can be connected to different current input and output terminals so that the current directions in the two adjacent first electromagnetic coils 103 are opposite. The number of permanent magnets 21 is the same as the number of first electromagnetic coils 103, and they are positioned one by one. The magnetic poles of adjacent permanent magnets 21 are opposite. Under the magnetic force of the permanent magnets 21 and the adjacent first electromagnetic coils 103, the permanent magnets 21 can be driven to rotate circumferentially along the rotary structure 2. Subsequently, by changing the direction of the current corresponding to the first electromagnetic coil 103, the magnetic pole distribution of the first electromagnetic coil 103 is changed, thereby continuously driving the permanent magnets 21 to rotate circumferentially along the rotary structure 2.

[0056] For example, to ensure the reliability of the magnetic force between the first electromagnetic coil 103 and the permanent magnet 21, please refer to... Figure 1 The distance between the permanent magnet 21 and the corresponding first electromagnetic coil 103 is 1-10mm, such as 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm.

[0057] For example, several first electromagnetic coils 103 are evenly distributed around the edge of the support base 101. This can further improve the stability of the rotational speed of the rotary structure 2.

[0058] The above only illustrates the case where the first electromagnetic coil 103 includes two sets. In reality, the number of first electromagnetic coils 103 can also be 3, 4, 5, or more. In this case, the multiple first electromagnetic coils 103 still need to meet the above arrangement, that is, the magnetic poles of two adjacent first electromagnetic coils 103 are opposite, and the magnetic poles of two adjacent permanent magnets 21 are opposite. Moreover, when the number of first electromagnetic coils 103 is an even number greater than 2, the position of the number of energized first electromagnetic coils 103 can be selected as needed. Generally, the number of energized first electromagnetic coils 103 is proportional to the rotational speed of the rotating structure 2. The following explanation uses an example with 8 first electromagnetic coils 103. Eight first electromagnetic coils 103 are evenly distributed on the edge of the support base 101 (e.g., Figure 5 As shown, these eight first electromagnetic coils 103 can be labeled A, B, C, D, E, F, G, and H. Similarly, the edge of the rotating structure 2 is provided with eight permanent magnets 21 corresponding to the first electromagnetic coils 103. The eight first electromagnetic coils 103 can be connected to the control unit. Subsequently, the control unit can control the energization of the first electromagnetic coils 103, so that the permanent magnets 21 are subjected to magnetic force and rotate around the circumference of the rotating structure 2 to achieve stirring.

[0059] The specific control process is as follows: The stirring speed can be divided into low, medium, and high. When the low speed is selected, the stirring element 6 needs to stir the ingredients at a low speed. The control unit can energize two of the eight first electromagnetic coils 103 (e.g., A and E) spaced three spaces apart, so that the permanent magnet 21 in the rotating structure 2 can be subjected to a lower magnetic force, thus enabling the stirring element 6 to stir at a low speed. When the high speed is selected, the eight first electromagnetic coils 103 can be energized sequentially. For example, the eight first electromagnetic coils 103 can be divided into four groups, each containing two first electromagnetic coils 103 with opposite magnetic poles. The first group is A and B, the second group is C and D, the third group is E and F, and the fourth group is G and H. The two first electromagnetic coils 103 (e.g., A and B) in the first group can be energized first, and then after a preset time (e.g., 1 second), the two first electromagnetic coils 103 (i.e., C and D) in the adjacent group can be energized, thus energizing the first group of electromagnetic coils. Power is turned off, then the third group is powered on while the second group is powered off. After the on / off control of the four groups is completed, the current direction is changed, and the on / off control of the four groups is cyclically controlled in the above sequence, thereby generating a magnetic force that continuously drives the permanent magnet 21 to rotate, thus achieving stirring. Optionally, the eight first electromagnetic coils 103 can be divided into two groups, each containing four first electromagnetic coils 103, and each group contains two subgroups, each containing two first electromagnetic coils 103. These two subgroups are arranged opposite each other at the edge of the rotating structure 2. For example, A, B, C, and D can be denoted as the first group, which includes the first subgroup A and B, and the second subgroup E and F. E, F, G, and H can be denoted as the second group, which includes the first subgroup C and D, and the second subgroup G and H. Subsequently, the coils of the first group can be powered on first, and then the coils of the second group can be powered on. After the on / off control of the two groups is completed, the current direction is changed, and the on / off control of the two groups is cyclically controlled in the above sequence, thereby generating a magnetic force that continuously drives the permanent magnet 21 to rotate, thus achieving stirring. This application's energizing control scheme for the eight first electromagnetic coils 103 is not limited to the two mentioned above. Other schemes can be used as needed, as long as they can continuously drive the permanent magnet 21 and the stirring component 6 to rotate. Furthermore, if it is desired to increase the stirring speed, the number of first electromagnetic coils 103 that need to be energized can be increased. The above settings for the number of first electromagnetic coils 103 corresponding to low and high speeds are merely examples, and the actual settings can be adjusted as needed. No restrictions are imposed here.

[0060] Example 2

[0061] Please see Figure 6 , Figure 6This is a partial installation diagram of a pot lid assembly and a pot body provided in an embodiment of this application. The difference between this embodiment and Embodiment 1 is that several second electromagnetic coils 41 can be arranged on the edge of the pot body 4. The number of first electromagnetic coils 103 on the support base 101 is the same as the number of second electromagnetic coils 41 on the pot body 4, and their positions correspond one-to-one. The magnetic poles of the first electromagnetic coil 103 and the corresponding second electromagnetic coil 41 adjacent to each other are opposite. Therefore, the first electromagnetic coil 103 is also used to form a second electromagnetic field under energized conditions through the second electromagnetic coils 41 arranged corresponding to its position. This causes the magnetic force generated by the interaction between the second electromagnetic field and the permanent magnet 21 located therein to drive the permanent magnet 21 to move circumferentially along the rotary structure 2, thereby driving the rotation of the rotary structure 2 connected to the permanent magnet 21, thus driving the rotation of the stirring component 6. The above scheme can not only generate a stronger electromagnetic field, thereby increasing the stirring speed, but also, since the magnetic poles of the adjacent ends of the first electromagnetic coil 103 and the second electromagnetic coil 41 are opposite, once the power is applied, the magnetic attraction of the first electromagnetic coil 103 and the second electromagnetic coil 41 can make the lid and the pot body 4 fit tightly together, thus improving the sealing effect of both.

[0062] To better understand the beneficial effects of the technical solution of this application, the principle of the electromagnetically driven stirring component 6 in this embodiment will be briefly described below:

[0063] Continuing with the example of two sets of electromagnetic actuators on a pot lid, each set includes a first electromagnetic coil 103, a permanent magnet 21, and a second electromagnetic coil 41. The magnetic poles of adjacent sets of first electromagnetic coils 103, permanent magnets 21, and second electromagnetic coils 41 are opposite when energized. The corresponding magnetic pole distributions of the first electromagnetic coils 103 and second electromagnetic coils 41 are the same. Please refer to... Figure 7 The first electromagnetic coil 103 of the first group has N and S (i.e., the south and north poles) along the y-direction, and the permanent magnet 21 of the first group has S and N along the y-direction, respectively. The second electromagnetic coil 41 of the first group also has N and S along the y-direction. Similarly, the first electromagnetic coil 103 of the second group has S and N along the y-direction, and the permanent magnet 21 of the second group also has N and S along the y-direction, respectively. The second electromagnetic coil 41 of the second group also has S and N along the y-direction. Therefore, when the stirring component 6 needs to be activated and rotated, the direction of the current in the first electromagnetic coil 103 can be controlled to adjust the magnetic pole distribution of these two groups of electromagnetic coils as follows: Figure 5As shown, through the interaction forces between the first electromagnetic coil 103 and the permanent magnet 21, and between the second electromagnetic coil 41 and the permanent magnet 21, based on the fundamental principle that like magnetic poles repel and unlike magnetic poles attract, the magnetic pole S of the second electromagnetic coil 103 has a magnetic attraction force on the magnetic pole N of the first permanent magnet 21, and the magnetic pole N of the second electromagnetic coil 103 has a magnetic attraction force on the magnetic pole S of the first permanent magnet 21; the magnetic pole N of the first electromagnetic coil 103 has a magnetic repulsion force on the magnetic pole N of the first permanent magnet 21, and the magnetic pole N of the second electromagnetic coil 41 has a magnetic attraction force on the magnetic pole N of the first permanent magnet 21. Thus, under the action of the above magnetic forces, the first permanent magnet 21 will rotate in the x-direction.

[0064] Similarly, when the number of the first electromagnetic coil 103 can be 3, 4, 5 or more, the number of the second electromagnetic coil 41 can also be 3, 4, 5 or more. For details of the selectable control scheme, please refer to the control scheme mentioned in Embodiment 1 above.

[0065] For example, please refer to Figure 6 The aforementioned pot lid and pot body 4 are applied to a corresponding cooking device, which also includes a pot base 5. The pot base 5 has a recessed area 51, so that the pot body 4 can be placed in the recessed area 51.

[0066] For example, please refer to Figure 8 The pot lid assembly also includes a bearing sleeve 11, a bearing 12, and a bearing seat 13. The bearing sleeve 11 is mounted on the support base 101 and the rotating structure 2. The bearing seat 13 is fitted inside the bearing 12 and connected to the drive motor 31 of the telescopic mechanism 3, thereby reducing vibration during operation of the drive motor 31. Optionally, the stirring element 6 can be as follows: Figure 8 The convex structure shown can also be a structure similar to a fan blade, and there is no limitation here.

[0067] For example, please refer to Figure 6 The support base 101 may include a support member 1016, a receiving groove 1013, and a cover plate 1014. The receiving groove 1013 is provided on the edge of the support member 1016, and the middle part of the support member 1016 is connected to the middle part of the rotary structure 2. The receiving groove 1013 forms a receiving cavity for placing a plurality of first electromagnetic coils 103 by cooperating with the cover plate 1014. The rotary structure 2 may include a second cover plate 22 and a first cover plate 23. The connection of the first cover plate 23 and the second cover plate 22 can form a receiving cavity for placing a plurality of permanent magnets 21.

[0068] Example 3

[0069] Please continue reading. Figure 8 The difference between this embodiment and the above embodiment 2 is that a metal clamping member 102 is provided on the support base 101, which may be an iron core, so that the metal clamping member 102 can form an electromagnet structure with the first electromagnetic coil 103 to assist in locking the pot lid. The magnitude of the electromagnet magnetic force is positively correlated with the number of coil turns and the current. The pot lid locking force can be controlled by the number of electromagnetic coil turns and the current to adapt to different pressure conditions.

[0070] According to the electromagnetic principle, the electromagnetic force F = number of coil turns N * current I. The electromagnetic force is directly proportional to the number of coil turns and the magnitude of the current. Assuming that the pressure range of the preset cooking conditions of the equipment is AZ kPa from low to high, the greater the pressure inside the pot 4, the more reliable the sealing performance of the pot lid needs to be, that is, the greater the required locking force. Therefore, the electromagnetic force required can be obtained by controlling the magnitude of the current to adapt to the locking situation under different pressure conditions.

[0071] For example, the support base 101 includes a first surface 1011 and a second surface 1012 opposite to each other. The edge of the first surface 1011 is provided with a first electromagnetic coil 103; the edge of the second surface 1012 is provided with a metal clamping member 102; the length of the metal clamping member 102 along a first direction is greater than the length of the rotary structure 2 along the first direction; the first direction is the extension direction from the first surface 1011 toward the second surface 1012.

[0072] For example, when the lid assembly is placed on the pot body 4, the metal clamping member 102 abuts against the top of the pot body 4. Since the metal clamping member 102 can form an electromagnet structure with the first electromagnetic coil 103, when the lid is closed and the first electromagnetic coil 103 and the second electromagnetic coil 41 are energized, the metal clamping member 102 and the second electromagnetic coil 41 on the pot body 4 can achieve magnetic attraction, which improves the sealing effect of the lid and the pot body 4.

[0073] For example, the rotating structure 2 has a first preset distance from the bottom of the support base 101 and a second preset distance from the bottom of the metal clamping member 102. Specifically, the range of the first preset distance and the second preset distance can be 1-10mm, such as 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm.

[0074] It should be noted that the technical solution of the stirring component protected by this application is not limited to the examples in Embodiments 1-3 above. It may also include technical solutions including Embodiments 1 and 2, Embodiments 1 and 3, etc., or it may be a combination of some contents in one embodiment or some contents in multiple embodiments. These will not be elaborated here.

[0075] Example 4

[0076] Please see Figure 9 This embodiment discloses a cooking device, which includes a pot body 4, a pot lid and the aforementioned stirring assembly.

[0077] For example, please refer to Embodiment 2 above. The edge of the pot body 4 is provided with a plurality of second electromagnetic coils 41 in the circumferential direction. The number of first electromagnetic coils 103 on the support base 101 is the same as that of second electromagnetic coils 41 on the pot body 4, and they are in corresponding positions. The magnetic poles of the first electromagnetic coil 103 and the corresponding second electromagnetic coil 41 are opposite at their adjacent ends.

[0078] The pot body 4 is a pressure cooker. The pot lid assembly also includes a pressure relief valve 1015, a check valve, a safety valve, and a sealing ring. This allows the cooking device to pressure cook food and also provides a relatively sealed interior cavity for better food preservation at low temperatures. Optionally, the pressure relief valve 1015 is located on the support base 101; the sealing ring is located on the edge of the support base 101, close to the rotating structure 2.

[0079] For example, please refer to Figure 10 The cooking device also includes a pot support 10, on which the pot base 5 is disposed, and the pot support 10 is used to support the pot base 5.

[0080] For example, please refer to Figure 8 The pot base 5 is also equipped with a Hall sensor 9, which is used to locate the rotation position of the permanent magnet 21, so that the on / off status of multiple first electromagnetic coils 103 and second electromagnetic coils 41 can be controlled based on the detected position of the permanent magnet 21.

[0081] For example, please refer to Figure 9-11 The cooking equipment can be an integrated cooking device, such as one integrated under the kitchen countertop. Specifically, the cooking equipment can be drawer-type, including a door 7 and a control panel 810. A slider is provided on the outer surface of the pot base 5, and a guide rail is provided inside the corresponding outer casing. The guide rail and the slider are slidably connected, so that when ingredients need to be added to the pot body 4, the pot base 5 can be pulled out entirely by pulling the door 7 (e.g., ...). Figure 11 As shown in the diagram, ingredients can be added to the pot body 4 by opening the lid. The control panel 8 may contain a control unit. Users can generate corresponding control signals by operating the function buttons (such as the power button, timer button, cooking type button, etc.) or function controls (when the panel is a touchscreen), allowing the control unit to control the cooking equipment to perform corresponding operations based on these control signals. Optionally, the control panel 8 may also include a voice broadcast component for broadcasting cooking-related prompts, such as emitting a continuous "beep" sound when the cooking is complete.

[0082] For example, please refer to Figure 11 The pot support 10 is also equipped with a placement slot 52, which can be used to place kitchen utensils such as bowls and chopsticks, or ingredients and seasonings, to improve the convenience of cooking for users.

[0083] It is understandable that cooking equipment can be, but is not limited to, the integrated cooking equipment mentioned above, or it can be a stand-alone cooking equipment, that is, cooking equipment can be a small cooking device that can be moved around at will.

[0084] Example 5

[0085] This embodiment also discloses a control method for a cooking device, which is applied to the aforementioned cooking device. The cooking device further includes a control unit, which is electrically connected to a first electromagnetic coil 103. The method includes: upon receiving a first speed control signal, controlling the energizing sequence of each of the plurality of first electromagnetic coils 103 based on the first speed control signal; and upon receiving a second speed control signal, controlling the speed of the drive motor 31 of the telescopic mechanism 3 based on the second speed control signal. Users can select to activate only circumferential stirring, vertical stirring, or a combination of both, as needed. When the user activates a combination of both, the first and second speed control signals can be determined based on the cooking type selected by the user. For example, if the user selects "soup," the corresponding speed is low; if the user selects "stir-fry," the corresponding speed is medium or high.

[0086] Based on the above embodiment 4, it can be seen that the control unit is electrically connected to the Hall sensor 9. In the specific control process, when the Hall sensor 9 detects the position information of the permanent magnet 21, it can send it to the control unit so that the control unit can control the energizing sequence of the multiple first electromagnetic coils 103 based on the position information and rotation speed control signal of the permanent magnet 21.

[0087] For example, when the cooking device includes the pot lid assembly described in Embodiment 2, the control of the energizing sequence of each of the plurality of first electromagnetic coils 103 based on the speed control signal can be specifically described as: controlling the energizing sequence of each of the plurality of first electromagnetic coils 103 and the energizing sequence of each of the plurality of second electromagnetic coils 41 based on the first speed control signal. The specific control mechanism of the plurality of first electromagnetic coils 103 and second electromagnetic coils 41 can be found in the above description and will not be repeated here.

[0088] This application embodiment utilizes the DC brushless motor drive principle to design the electromagnetic coil and permanent magnet 21 on the pot lid, thereby eliminating the need for motor components and modularizing the drive power system with the pot lid assembly. The stirring is set on the pot lid, which solves the problems of the drive shaft being set at the bottom of the pot and the stirring occupying the heating area and having poor stirring effect, while achieving the technical effect of eliminating motor parts.

[0089] The cooking equipment in this technical solution can be a pressurized embedded cooking oven. The working environment and cooking conditions require the pot body 4 component of the equipment to achieve high reliability in sealing performance under different pressure conditions inside the pot. Therefore, an electromagnetic coil that works with the electromagnetic coil on the pot lid can be set on the pot body 4. This can achieve the effect of driving stirring while forming a mechanism for the electromagnet to lock the pot lid. In addition to the sealing ring of the pot lid and the top auxiliary pressure structure, the locking force is increased and the sealing efficiency is improved.

[0090] The above description is only an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A stirring assembly, characterized in that, It includes several first electromagnetic coils (103), several permanent magnets (21), a telescopic mechanism (3) and a stirring component (6); Several of the first electromagnetic coils (103) are spaced apart on the edge of the support base (101) of the pot lid; Several permanent magnets (21) are spaced apart on the edge of the rotating structure (2) of the pot lid, and each permanent magnet (21) corresponds to one of the first electromagnetic coils (103). The top of the telescopic mechanism (3) is located in the middle of the rotary structure (2), and the bottom of the telescopic mechanism (3) is provided with the stirring element (6); the telescopic mechanism (3) is used to drive the stirring element (6) to move up and down relative to the rotary structure (2); The first electromagnetic coil (103) is used to generate a first electromagnetic field under energized conditions, so that the magnetic force generated by the interaction between the first electromagnetic field and the permanent magnet (21) located therein drives the permanent magnet (21) to move circumferentially along the rotary structure (2), thereby driving the rotary structure (2) connected to the permanent magnet (21) to rotate. The telescopic mechanism (3) includes a drive motor (31), a rotating rod (32), a sliding connector (33), a sliding sleeve (34), and a rotating sleeve (35). The drive motor (31) is connected to the rotating rod (32); The rotating rod (32) is provided with a continuous groove (321) around the circumference of the rotating rod (32), and the length direction of the groove (321) extends along the axis of the rotating rod (32). The sliding sleeve (34) is provided with an open groove (341) along the axial direction of the rotating rod (32), and the sliding sleeve (34) is sleeved on the rotating rod (32). The top of the sliding sleeve (34) is connected to the housing of the drive motor (31). The rotating sleeve (35) is provided with a fixing structure (351), one end of the sliding connector (33) is located in the groove (321), and the other end of the sliding connector (33) passes through the opening groove (341) and is connected to the fixing structure (351). The stirring component (6) is connected to the end of the rotating sleeve (35); The support base (101) includes a first surface (1011) and a second surface (1012) facing each other. The first electromagnetic coil (103) is provided at the edge of the first surface (1011). The edge of the second surface (1012) is provided with a metal clamping element (102); The length of the metal clamping member (102) along the first direction is greater than the length of the rotary structure (2) along the first direction; the first direction is the extension direction from the first surface (1011) toward the second surface (1012).

2. The stirring assembly according to claim 1, characterized in that, The drive motor (31) is used to drive the rotation of the rotating rod (32) to realize the up and down movement of the rotating sleeve (35) connected to the rotating rod (32).

3. The stirring assembly according to claim 1, characterized in that, When the stirring assembly is placed on the pot body (4), the metal clamping member (102) abuts against the top of the pot body (4).

4. The stirring assembly according to claim 1, characterized in that, The first electromagnetic coil (103) is also used to form a second electromagnetic field by means of the second electromagnetic coil (41) which is set in a corresponding position under the condition of being energized, so that the magnetic force generated by the interaction between the second electromagnetic field and the permanent magnet (21) located therein drives the permanent magnet (21) to move circumferentially along the rotary structure (2), thereby driving the rotary structure (2) connected to the permanent magnet (21) to rotate; the second electromagnetic coil (41) is located on the pot body (4); and the magnetic poles of the first electromagnetic coil (103) and the adjacent end of the second electromagnetic coil (41) which are located in the same position are opposite.

5. The stirring assembly according to claim 1, characterized in that, The number of energized first electromagnetic coils (103) is proportional to the rotational speed of the rotary structure (2).

6. A cooking device, characterized in that, It includes a pot body (4), a pot lid, and a stirring assembly as described in any one of claims 1-5.

7. The cooking apparatus according to claim 6, characterized in that, It also includes the pot stand (5); The pot base (5) is provided with a recessed area (51), and the pot body (4) is located in the recessed area (51); The outer surface of the pot base (5) is provided with a slider for sliding connection with the guide rail of the outer shell.

8. A method for controlling a cooking device, characterized in that, Applied to the cooking apparatus as described in claim 6, the cooking apparatus further comprising a control unit electrically connected to the first electromagnetic coil (103); the method comprising: Upon receiving the first speed control signal, the energizing sequence of each of the plurality of first electromagnetic coils (103) is controlled based on the first speed control signal. Upon receiving the second speed control signal, the speed of the drive motor (31) of the telescopic mechanism (3) is controlled based on the second speed control signal.

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