Cooking equipment

Abstract

The utility model provides cooking equipment which comprises a pot body and a coil panel assembly, the coil panel assembly comprises a coil support and a first coil, the first coil is wound on the coil support, the first coil is located on the side portion of the pot body, and the first coil is distributed in the circumferential direction of the pot body; the distance between the first coil and the side portion of the pot body is L1, the distance between the side portion of the pot body and the center line of the pot body is L2, and L1 and L2 are inversely proportional. When the horizontal radius of the side wall of the pot body is small, the rice-water mixture is less, the horizontal working distance of the first coil is large, the heat acting on the pot body is less, otherwise, the rice-water mixture is more, the heat acting on the pot body is more, the rice-water mixture can be uniformly heated, the hardness of rice cooked by the cooking equipment is more consistent, and the taste of the rice is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking equipment, in particular to a cooking equipment. Background Art

[0002] Electromagnetic heating technology is a method of generating a high-frequency alternating magnetic field through a coil, which acts on ferrous metal to form eddy current heating.

[0003] With current electromagnetic heating rice cookers, when the heating coil heats the inner pot, the rice-water mixture at different positions in the inner pot will be heated unevenly, resulting in large deviations in the softness and hardness of the rice at different positions and a poor taste. Utility Model Content

[0004] The utility model aims to solve the problem that the rice-water mixture at different positions in the inner pot is heated unevenly.

[0005] The utility model proposes a cooking device, comprising: a pot body; a coil disk assembly, the coil disk assembly comprising a coil support and a first coil, the first coil is wound on the coil support, the first coil is located at the side of the pot body, and the first coil is distributed along the circumference of the pot body; wherein, the distance from the first coil to the side of the pot body is L1, the distance from the side of the pot body to the center line of the pot body is L2, and L1 is inversely proportional to L2.

[0006] In the related art, the coils on the side of the pot body generally adopt the design principle of equal working distance, that is, the horizontal working distance from the inner side of the coil close to the pot body to the outer wall of the pot body is equal. According to the principle of electromagnetic heating, the heat generated by each circle of the coil on the pot body is equal and the heat is uniform. However, because the radius of each part of the side of the pot body is usually different, the position with a small radius corresponds to less rice-water mixture in the horizontal direction, and the actual required heat is less. Therefore, although the heat on the side wall of the pot body is uniform, the heat is actually too high at the position with a small radius, or the heat is insufficient at the position with a large radius, resulting in uneven heating of the rice-water mixture and large deviations in the hardness of rice at different positions.

[0007] The first coil may have multiple turns, and the multiple turns of the first coil are arranged in sequence along the center line direction of the pot body. The multiple turns of the first coil form a semi-wrapped state for the pot body, thereby quickly heating the pot body.

[0008] The distance between the first coil and the side of the pot body is L1, and the distance between the side of the pot body and the center line of the pot body is L2. Since L1 and L2 are inversely proportional, the distance between the first coil and the side of the pot body is related to the distance between the side of the pot body and the center line of the pot body, that is, the distance between the first coil and the side of the pot body changes as the distance between the side of the pot body and the center line of the pot body changes.

[0009] Specifically, at a position where the distance between the side of the pot body and the center line of the pot body is large, the radius of the pot body is large, and the distance between the first coil and the side of the pot body is small. Similarly, at a position where the distance between the side of the pot body and the center line of the pot body is small, the radius of the pot body is small, and the distance between the first coil and the side of the pot body is large.

[0010] In the technical solution of the present application, the horizontal working distance from the first coil close to the pot body to the side of the pot body is not equal, but is inversely proportional to the pot body radius of the corresponding horizontal plane. When the horizontal radius of the side of the pot body is small, the rice-water mixture is small, the horizontal working distance of the first coil is large, and the heat acting on the pot body is small. On the contrary, when the rice-water mixture is large, the heat acting on the pot body is large, which is conducive to achieving uniform heating of the rice-water mixture, making the hardness of the rice cooked by the cooking device more consistent, and improving the taste of the rice.

[0011] Cooking equipment includes but is not limited to rice cookers, electric soup cookers, and electric pressure cookers.

[0012] The center line is a straight line drawn through the center of the bottom wall of the pot body and perpendicular to the center to obtain the center line.

[0013] In some technical solutions, optionally, the first coil has multiple turns, the multiple turns of the first coil are distributed along the center line of the pot body, and the number of turns of the first coil in the vertical direction along the center line of the pot body is consistent.

[0014] The first coil can be formed by winding a plurality of turns of an electromagnetic wire on the side of the coil support. Furthermore, along the direction perpendicular to the center line of the pot body, the number of turns of the first coil can be 1 turn, 2 turns, 3 turns, etc.

[0015] In some technical schemes, optionally, along the extension direction of the center line of the pot body, a plurality of layers of winding grooves are provided on the coil support, the first coil is wound in the winding grooves, and along the direction perpendicular to the center line of the pot body, the thickness of the corresponding winding groove position on the coil support is L3, and L3 is inversely proportional to L2.

[0016] The winding groove has a limiting effect on the first coil to prevent the first coil from being offset. The winding groove has a notch, and the groove bottom wall is directly opposite to the notch. After the first coil is wound, the first coil will abut against the groove bottom wall of the winding groove. Therefore, the thickness of the position corresponding to the groove bottom wall on the coil support will determine the distance between the first coil and the side of the pot body.

[0017] At a position where the distance between the side of the pot body and the center line of the pot body is larger, the radius of the corresponding pot body is larger, and the thickness of the corresponding winding groove position on the coil support is set smaller, so that the distance from the first coil to the side of the pot body is smaller. Similarly, at a position where the distance between the side of the pot body and the center line of the pot body is smaller, the radius of the corresponding pot body is smaller, and the thickness of the corresponding winding groove position on the coil support is set larger, so that the distance from the first coil to the side of the pot body is larger. By setting different thicknesses at different positions of the coil support, the horizontal working distance from the first coil to the side of the pot body is not equal. During the winding process, there is no need to adjust the distance from the first coil to the side wall of the pot body, and the winding only needs to be placed close to the winding groove, which helps to reduce the difficulty of winding.

[0018] In some technical schemes, optionally, along the extension direction of the center line of the pot body, a plurality of layers of winding grooves are provided on the coil support, and the first coil is wound in the winding grooves; the coil disk assembly also includes: a plurality of limiting ribs connected to the coil support, and the plurality of limiting ribs are distributed at intervals along the circumference of the coil support, and along the direction perpendicular to the center line of the pot body, the limiting ribs lift the first coil above the bottom wall of the winding groove; wherein, along the direction perpendicular to the center line of the pot body, the thickness of the limiting ribs is L4, and L4 is inversely proportional to L2.

[0019] The winding groove serves to limit the first coil. In order to change the distance between the first coil at different positions and the side wall of the pot body, the technical solution arranges limiting ribs on the coil bracket. The limiting ribs can lift the first coil above the bottom wall of the winding groove. The winding groove has a notch, and the bottom wall of the groove is opposite to the notch.

[0020] Specifically, a plurality of limiting ribs are distributed along the circumference of the coil support. After the first coil is wound, the first coil abuts against the limiting ribs, so that the first coil does not abut against the bottom wall of the winding groove. The limiting ribs have different thicknesses at different positions, so that the horizontal working distance from the first coil to the side wall of the pot body is not equal. During the winding process, there is no need to adjust the distance from the first coil to the side wall of the pot body, and the winding wire only needs to be close to the limiting ribs, which is conducive to reducing the difficulty of winding.

[0021] In some technical solutions, optionally, L4 satisfies, 0.8mm≤L4≤10mm.

[0022] If the thickness of the limiting rib is too small, the limiting rib cannot effectively adjust the position of the first coil. If the thickness of the limiting rib is too large, the limiting rib occupies too much space, thereby affecting the overall thickness of the coil support. The thickness of the limiting rib is limited to 0.8mm≤L4≤10mm. Within this range, the thickness of the limiting rib can effectively adjust the position of the first coil without affecting the overall thickness of the coil support.

[0023] In some embodiments, optionally, a accommodating portion is provided on the coil support, and the shape of the accommodating portion is adapted to the shape of the pot body. Along the direction perpendicular to the center line of the accommodating portion, the distance between the inner wall of the accommodating portion and the first coil is L5, and the distance between the center line of the accommodating portion and the inner wall of the accommodating portion is L6, and L5 and L6 are inversely proportional.

[0024] A first coil is wound around the side of the coil support. When the pot body is placed in the accommodating portion, the first coil is distributed circumferentially along the side of the pot body. When the first coil is energized, the first coil can heat the pot body, thereby heating the rice-water mixture in the pot body.

[0025] The larger the distance between the inner wall of the accommodating portion and the center line of the accommodating portion, the smaller the distance between the inner wall of the accommodating portion and the first coil. Similarly, the smaller the distance between the inner wall of the accommodating portion and the center line of the accommodating portion, the larger the distance between the inner wall of the accommodating portion and the first coil.

[0026] When the horizontal radius of the side of the pot body is small, the rice-water mixture is small, the horizontal working distance of the first coil is large, and the heat acting on the pot body is small. On the contrary, when the rice-water mixture is large, the heat acting on the pot body is large, which is conducive to achieving uniform heating of the rice-water mixture, making the rice cooked by the cooking equipment more consistent in softness and hardness, and improving the taste of the rice.

[0027] In some technical solutions, optionally, the cooking device further includes: a limiting portion, which is arranged on the inner wall of the accommodating portion, and the limiting portion is used to limit the movement of the pot body in a direction perpendicular to the center line of the accommodating portion.

[0028] When the pot is placed in the accommodating portion, the limiting portion limits the pot, so that the limiting portion limits the pot from moving in a direction perpendicular to the center line of the accommodating portion, the distance between the pot and the first coil remains unchanged, and the horizontal working distance of the first coil remains unchanged, which is conducive to improving the heating effect of the first coil on the pot. In addition, through the limiting effect of the limiting portion, the center line of the accommodating portion can be made to coincide with the center line of the pot, which is conducive to improving the heating effect of the coil on the pot.

[0029] In some technical solutions, optionally, the distances between each part of the pot body and the inner wall of the accommodating portion are equal.

[0030] When the distances between the inner wall of the accommodating portion and all parts of the pot body are equal, the shape of the accommodating portion is adapted to the shape of the pot body, and the outer contour of the pot body matches the contour of the inner wall of the accommodating portion, which is conducive to aligning the center line of the accommodating portion with the center line of the pot body.

[0031] In some technical solutions, optionally, the coil disk assembly further includes: at least two second coils, which are wound around the bottom of the coil support, and the at least two second coils are distributed at intervals along the circumference of the bottom of the coil support.

[0032] A second coil is wound around the bottom wall of the coil bracket, and the second coil corresponds to the bottom of the pot body. The first coil heats the side of the pot body, and the second coil heats the bottom of the pot body. When the side and the bottom of the pot body are heated at the same time, the heating speed can be increased, and the heating uniformity of the rice-water mixture can also be improved, which is beneficial to improving the cooking effect of rice.

[0033] In some technical solutions, optionally, one of two adjacent second coils is set as a first sub-coil and the other is set as a second sub-coil, and the current directions of the first sub-coil and the second sub-coil at adjacent positions are opposite.

[0034] The current directions of the two adjacent second coils are opposite in the adjacent parts, so that the magnetic fields generated at the adjacent positions of the two adjacent second coils are opposite in direction. The adjacent magnetic fields with opposite directions will cancel each other out to a certain extent, thus forming an energy weak zone between the two adjacent second coils. The heat from the side of the pot body flows to the weak heat zone, so that the heat flows from the outside of the pot body to the inside of the pot body, making the area to which the heat flows larger and the path longer, and forming heat exchange between the various areas on the pot body, so that the rice-water mixture in the pot body is evenly and fully heated, thereby greatly improving the uniformity of the moisture content of the whole pot of rice and improving the user's taste.

[0035] In some technical schemes, optionally, the cooking device also includes: an excitation circuit, which is electrically connected to the second coil; wherein the winding directions of the first sub-coil and the second sub-coil are the same, and the connection method of the input and output terminals of the first sub-coil to the output positive and output negative poles of the excitation circuit is the same as the connection method of the input and output terminals of the second sub-coil to the output positive and output negative poles of the excitation circuit; or, the winding directions of the first sub-coil and the second sub-coil are opposite, and the connection method of the input and output terminals of the first sub-coil to the output positive and output negative poles of the excitation circuit is opposite to the connection method of the input and output terminals of the second sub-coil to the output positive and output negative poles of the excitation circuit.

[0036] The technical solution of the present application proposes to make the current directions in the two adjacent second coils at the bottom the same, and to make the current directions in the adjacent parts of the two adjacent second coils opposite, so that the magnetic fields generated at adjacent positions of the two adjacent second coils are in opposite directions, and the adjacent magnetic fields with opposite directions will cancel each other out to a certain extent, thereby presenting an energy weak area between the two adjacent second coils.

[0037] When the winding directions of two adjacent second coils are the same, the two adjacent second coils are both wound in a clockwise direction, or both are wound in a counterclockwise direction. The input end of the first sub-coil is connected to the positive output of the excitation circuit, and the output end of the first sub-coil is connected to the negative output of the excitation circuit. Similarly, the input end of the second sub-coil is connected to the positive output of the excitation circuit, and the output end of the second sub-coil is connected to the negative output of the excitation circuit. Thus, the current direction in the first sub-coil is the same as the current direction in the second sub-coil.

[0038] When the winding directions of the two adjacent second coils are opposite, one second coil is wound in the clockwise direction and the other second coil is wound in the counterclockwise direction. When the input end of the first sub-coil is connected to the positive output of the excitation circuit, the input end of the second sub-coil is connected to the negative output of the excitation circuit. In this case, although the winding directions of the two adjacent second coils are opposite, the ends of the two adjacent second coils passing the current are different, which makes the current directions of the two adjacent second coils the same.

[0039] Through the above method, a weak heat zone is formed between two adjacent second coils, and the heat on the side of the pot body flows to the weak heat zone, so that the heat flows from the outside of the pot body to the inside of the pot body, so that the area where the heat flows is larger and the path is longer. Heat exchange is formed between various areas on the pot body, so that the rice and water mixture in the pot body is evenly and fully heated, thereby greatly improving the uniformity of the moisture of the whole pot of rice and improving the user's taste.

[0040] In some technical solutions, optionally, the pot body has an opening and a bottom wall, and L1 gradually increases from the opening to the bottom wall.

[0041] From the opening of the pot body to the bottom wall of the pot body, the radius of the pot body gradually decreases, while the distance between the first coil and the side of the pot body gradually increases, the horizontal radius of the side wall of the bottom of the pot body is small, the rice-water mixture is small, the horizontal working distance of the first coil is large, and the heat acting on the pot body is small. The horizontal radius of the side wall of the top of the pot body is large, the rice-water mixture is large, the horizontal working distance of the first coil is small, and the heat acting on the pot body is large, which is conducive to achieving uniform heating of the rice-water mixture, making the hardness of the rice cooked by the cooking device more consistent, and improving the taste of the rice.

[0042] In some technical solutions, optionally, the pot body has an opening and a bottom wall, the side of the pot body includes a vertical section and a transition section, the vertical section and the bottom wall are connected through the transition section, and L1 gradually increases from the top of the transition section to the bottom of the transition section.

[0043] The side shape of the pot body is an oblique angle portion (transition section) plus a straight body portion (vertical section). When the ratio of the height of the oblique angle portion to the total height is less than or equal to 45%, the first coil covers most of the oblique angle portion and a small part of the straight body portion, and the horizontal working distance of the first coil is inversely proportional to the horizontal radius of the pot body.

[0044] The vertical section extends along the center line of the pot body, and the radius of the bevel portion gradually decreases from the opening of the pot body to the bottom wall of the pot body, while the spacing from the first coil to the side of the pot body gradually increases. The horizontal radius of the bottom of the bevel portion is small, the rice-water mixture is small, the horizontal working distance of the first coil is large, and the heat acting on the pot body is small. The horizontal radius of the top of the pot body is large, the rice-water mixture is large, the horizontal working distance of the first coil is small, and the heat acting on the pot body is large, which is conducive to achieving uniform heating of the rice-water mixture, making the hardness of the rice cooked by the cooking device more consistent, and improving the taste of the rice.

[0045] The side shape of the inner pot is an angled portion plus a straight portion. When the ratio of the angled portion height to the total height is greater than 45%, the first coil covers most of the angled portion and a small part of the straight portion, and the horizontal working distance of the first coil is inversely proportional to the horizontal radius of the pot body.

[0046] In some technical solutions, optionally, the pot body has an opening and a bottom wall, and from the opening to the bottom wall, L1 first decreases and then increases.

[0047] The side of the inner pot is arc-shaped without a straight body. The first coil covers the arc-shaped side of the pot body from bottom to top, and the horizontal working distance of the first coil is inversely proportional to the horizontal radius of the side wall of the pot body. From the opening to the bottom wall, the distance between the side of the pot body and the center line of the pot body first increases and then decreases. In this case, from the opening to the bottom wall, the horizontal working distance of the first coil first decreases and then increases, which is conducive to achieving uniform heating of the rice-water mixture, making the hardness of the rice cooked by the cooking device more consistent, and improving the taste of the rice.

[0048] In some technical solutions, optionally, the height of the pot body from the opening to the bottom wall is H1, and a straight line L7 is set perpendicular to the center line of the pot body. The maximum distance between the side of the pot body and the center line of the pot body passes through the straight line L7, and the distance between the straight line L7 and the bottom wall is H2, and H2 / H1≥0.65.

[0049] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0051] Figure 1 An exploded view of a cooking device in an embodiment of the present utility model is shown;

[0052] Figure 2 One of the structural schematic diagrams of the first coil and the second coil in the embodiment of the utility model is shown;

[0053] Figure 3 One of the structural schematic diagrams of the cooking device in the embodiment of the utility model is shown;

[0054] Figure 4 One of the partial schematic diagrams of the cooking device in the embodiment of the utility model is shown;

[0055] Figure 5 One of the structural schematic diagrams of the coil support and the limiting ribs in the embodiment of the utility model is shown;

[0056] Figure 6 The second schematic diagram of the structure of the coil support and the limiting ribs in the embodiment of the utility model is shown;

[0057] Figure 7 The third structural schematic diagram of the coil support and the limiting ribs in the embodiment of the utility model is shown;

[0058] Figure 8 The second schematic diagram of the structure of the first coil and the second coil in the embodiment of the utility model is shown;

[0059] Fig. 9 The second structural schematic diagram of the cooking device in the embodiment of the utility model is shown;

[0060] Fig.10 A second partial schematic diagram of a cooking device in an embodiment of the utility model is shown;

[0061] Fig.11 The third schematic diagram of the structure of the first coil and the second coil in the embodiment of the utility model is shown;

[0062] Fig.12 The third structural schematic diagram of the cooking device in the embodiment of the utility model is shown;

[0063] Fig.13 A third partial schematic diagram of a cooking device in an embodiment of the present utility model is shown.

[0064] Reference numerals:

[0065] 100 pot body, 110 opening, 120 bottom wall, 130 vertical section, 140 transition section, 200 first coil, 300 coil support, 310 winding groove, 400 limiting rib, 500 second coil, 510 first sub-coil, 520 second sub-coil, 600 coil disk assembly, 610 limiting portion, 620 accommodating portion, 700 excitation circuit. DETAILED DESCRIPTION

[0066] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0067] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0068] Refer to the following Figures 1 to 13 The cooking device provided according to some embodiments of the present invention is described.

[0069] In an embodiment of the utility model, a cooking device is provided, comprising: a pot body 100 and a coil plate assembly 600, wherein the coil plate assembly 600 comprises a coil support 300 and a first coil 200, wherein the first coil 200 is wound on the coil support 300, and the first coil 200 is located at a side of the pot body 100, and the first coil 200 is arranged along the circumference of the pot body 100 ( Figure 1 The arrow at A in the middle points to the distribution); wherein, the distance from the first coil 200 to the side of the pot body 100 is L1, and the distance from the side of the pot body 100 to the center line C1 of the pot body 100 is L2, and L1 and L2 are inversely proportional.

[0070] In the related art, the coils on the side of the pot body generally adopt the design principle of equal working distance, that is, the horizontal working distance from the inner side of the coil close to the pot body to the outer wall of the pot body is equal. According to the principle of electromagnetic heating, the heat generated by each circle of the coil on the pot body is equal and the heat is uniform. However, because the radius of each part of the side of the pot body is usually different, the position with a small radius corresponds to less rice-water mixture in the horizontal direction, and the actual required heat is less. Therefore, although the heat on the side wall of the pot body is uniform, the heat is actually too high at the position with a small radius, or the heat is insufficient at the position with a large radius, resulting in uneven heating of the rice-water mixture and large deviations in the hardness of rice at different positions.

[0071] The first coil 200 may have multiple turns, and the multiple turns of the first coil 200 are arranged in sequence along the center line C1 direction of the pot body 100. The multiple turns of the first coil 200 form a semi-wrapped state for the pot body 100, so that the pot body 100 can be quickly heated.

[0072] The distance between the first coil 200 and the side of the pot body 100 is L1, and the distance between the side of the pot body 100 and the center line C1 of the pot body 100 is L2. Since L1 and L2 are inversely proportional, the distance between the first coil 200 and the side of the pot body 100 is related to the distance between the side of the pot body 100 and the center line C1 of the pot body 100, that is, the distance between the first coil 200 and the side of the pot body 100 changes as the distance between the side of the pot body 100 and the center line C1 of the pot body 100 changes.

[0073] Specifically, at a position where the distance between the side of the pot body 100 and the center line C1 of the pot body 100 is large, the radius of the pot body 100 is large, and the distance between the first coil 200 and the side of the pot body 100 is small. Similarly, at a position where the distance between the side of the pot body 100 and the center line C1 of the pot body 100 is small, the radius of the pot body 100 is small, and the distance between the first coil 200 and the side of the pot body 100 is large.

[0074] In the technical solution of the present application, the horizontal working distance from the first coil 200 close to the pot body 100 to the side of the pot body 100 is not equal, but is inversely proportional to the radius of the pot body 100 on the corresponding horizontal plane. When the horizontal radius of the side of the pot body 100 is small, the rice-water mixture is small, the horizontal working distance of the first coil 200 is large, and the heat acting on the pot body 100 is small. On the contrary, when the rice-water mixture is large, the heat acting on the pot body 100 is large, which is conducive to achieving uniform heating of the rice-water mixture, making the hardness of the rice cooked by the cooking device more consistent, and improving the taste of the rice.

[0075] In one possible application, L1×L2=constant.

[0076] In a possible application, the multiple turns of the first coil 200 are spaced equally apart in the direction of the center line C1 of the pot body 100 .

[0077] It should be noted that L1 may be the distance between the first coil 200 and the inner side of the pot body 100, or L1 may be the distance between the first coil 200 and the outer side of the pot body 100. Similarly, L2 may be the distance between the inner side of the pot body 100 and the center line C1 of the pot body 100, or L2 may be the distance between the outer side of the pot body 100 and the center line C1 of the pot body 100.

[0078] In this embodiment, L1 is the distance between the first coil 200 and the outer side of the pot body 100, and L2 is the distance between the inner side of the pot body 100 and the center line C1 of the pot body 100. In other embodiments, it is not limited to the embodiment. Figure 3 The form of expression can be selected according to the actual situation.

[0079] Cooking equipment includes but is not limited to rice cookers, electric soup cookers, and electric pressure cookers.

[0080] In some embodiments, optionally, the first coil 200 has multiple turns, and the multiple turns of the first coil 200 are distributed along the center line C1 of the pot body 100 , and the number of turns of the first coil 200 in the vertical direction along the center line C1 of the pot body 100 is consistent.

[0081] The first coil 200 can be formed by winding a plurality of turns of an electromagnetic wire on the side of the coil support 300 . Furthermore, along a direction perpendicular to the center line C1 of the pot body 100 , the number of turns of the first coil 200 can be 1 turn, 2 turns, 3 turns, etc.

[0082] In some embodiments, optionally, along the extension direction of the center line C1 of the pot body 100, a plurality of layers of winding grooves 310 are provided on the coil support 300, and the first coil 200 is wound in the winding grooves 310. Along the direction perpendicular to the center line C1 of the pot body 100, the thickness of the position of the coil support 300 corresponding to the winding grooves 310 is L3, and L3 is inversely proportional to L2.

[0083] The winding groove 310 limits the first coil 200 to prevent the first coil 200 from being offset. The winding groove 310 has a notch, and the bottom wall of the groove is opposite to the notch. After the first coil 200 is wound, the first coil 200 will abut against the bottom wall of the winding groove 310. Therefore, the thickness of the position corresponding to the bottom wall of the groove on the coil support 300 will determine the distance between the first coil 200 and the side of the pot body 100.

[0084] At a position where the distance between the side of the pot body 100 and the center line C1 of the pot body 100 is large, the radius of the corresponding pot body 100 is large, and the thickness of the corresponding winding groove 310 position on the coil support 300 is smaller, so that the distance between the first coil 200 and the side of the pot body 100 is small. Similarly, at a position where the distance between the side of the pot body 100 and the center line C1 of the pot body 100 is small, the radius of the corresponding pot body 100 is small, and the thickness of the corresponding winding groove 310 position on the coil support 300 is larger, so that the distance between the first coil 200 and the side of the pot body 100 is larger. By setting different thicknesses at different positions of the coil support 300, the horizontal working distance from the first coil 200 to the side of the pot body 100 is not equal. During the winding process, there is no need to adjust the distance between the first coil 200 and the side wall of the pot body 100, and the winding wire can be placed close to the winding groove 310, which is conducive to reducing the difficulty of winding.

[0085] Combination Figure 5 and Figure 6As shown, in some embodiments, optionally, along the extension direction of the center line C1 of the pot body 100, the coil support 300 is provided with multiple layers of winding grooves 310, and the first coil 200 is wound in the winding grooves 310. The coil disk assembly further includes: a plurality of limiting ribs 400, the limiting ribs 400 are connected to the coil support 300, and the plurality of limiting ribs 400 are distributed at intervals along the circumference of the coil support 300, and along the direction perpendicular to the center line C1 of the pot body 100, the limiting ribs 400 raise the first coil 200 above the bottom wall of the winding groove 310; wherein, along the direction perpendicular to the center line C1 of the pot body 100, the thickness of the limiting ribs 400 is L4, and L4 is inversely proportional to L2.

[0086] The winding groove 310 limits the first coil 200. In order to change the distance between the first coil 200 at different positions and the side wall of the pot body 100, the present embodiment provides a limiting rib 400 on the coil support 300. The limiting rib 400 can lift the first coil 200 above the bottom wall of the winding groove 310. The winding groove 310 has a notch, and the bottom wall of the notch is opposite to the notch.

[0087] Specifically, a plurality of limiting ribs 400 are distributed along the circumference of the coil support 300. After the first coil 200 is wound, the first coil 200 abuts against the limiting ribs 400, so that the first coil 200 does not abut against the bottom wall of the winding groove 310. The limiting ribs 400 have different thicknesses at different positions, so that the horizontal working distances from the first coil 200 to the side wall of the pot body 100 are not equal. During the winding process, there is no need to adjust the distance from the first coil 200 to the side wall of the pot body 100, and the winding only needs to be close to the limiting ribs 400, which is conducive to reducing the difficulty of winding.

[0088] In some embodiments, optionally, L4 satisfies, 0.8mm≤L4≤10mm.

[0089] If the thickness of the limiting rib 400 is too small, the limiting rib 400 cannot effectively adjust the position of the first coil 200. If the thickness of the limiting rib 400 is too large, the limiting rib 400 occupies too much space, thereby affecting the overall thickness of the coil support 300. The thickness of the limiting rib 400 is limited to meet 0.8mm≤L4≤10mm. Within this range, the thickness of the limiting rib 400 can effectively adjust the position of the first coil 200 without affecting the overall thickness of the coil support 300. Exemplarily, L4 is 0.8mm, 2mm or 10mm.

[0090] In some embodiments, a housing portion 620 is provided on the coil support 300, and the shape of the housing portion 620 is adapted to the shape of the pot body 100. Along the direction perpendicular to the center line C2 of the housing portion 620, the distance between the inner wall of the housing portion 620 and the first coil 200 is L5, and the distance between the center line C2 of the housing portion 620 and the inner wall of the housing portion 620 is L6, and L5 and L6 are inversely proportional.

[0091] A first coil 200 is wound around the side of the coil support 300. When the pot body 100 is placed in the accommodating portion 620, the first coil 200 is distributed circumferentially along the side of the pot body 100. When the first coil 200 is energized, the first coil 200 can heat the pot body 100, thereby heating the rice-water mixture in the pot body 100.

[0092] The larger the distance between the inner wall of the accommodating portion 620 and the center line C2 of the accommodating portion 620, the smaller the distance between the inner wall of the accommodating portion 620 and the first coil 200. Similarly, the smaller the distance between the inner wall of the accommodating portion 620 and the center line C2 of the accommodating portion 620, the larger the distance between the inner wall of the accommodating portion 620 and the first coil 200.

[0093] When the horizontal radius of the side of the pot body 100 is small, the rice-water mixture is small, the horizontal working distance of the first coil 200 is large, and the heat acting on the pot body 100 is small. On the contrary, when the rice-water mixture is large, the heat acting on the pot body 100 is large, which is conducive to achieving uniform heating of the rice-water mixture, making the rice cooked by the cooking equipment more uniform in hardness, and improving the taste of the rice.

[0094] In a possible application, the center line C2 of the accommodation portion 620 coincides with or is offset from the center line C1 of the pot body 100 .

[0095] Combination Figure 7 and Fig. 9 As shown, in some embodiments, optionally, the cooking device further includes: a limiting portion 610, which is disposed on the inner wall of the accommodating portion 620, and is used to limit the movement of the pot body 100 in a direction perpendicular to the center line C2 of the accommodating portion 620.

[0096] When the pot body 100 is placed in the accommodating portion 620, the limiting portion 610 limits the pot body 100, so that the limiting portion 610 limits the pot body 100 from moving in a direction perpendicular to the center line C2 of the accommodating portion 620, and the distance between the pot body 100 and the first coil 200 remains unchanged, and the horizontal working distance of the first coil 200 remains unchanged, which is conducive to improving the heating effect of the first coil 200 on the pot body 100. In addition, through the limiting effect of the limiting portion 610, the center line C2 of the accommodating portion 620 can be made to coincide with the center line C1 of the pot body 100, which is conducive to improving the heating effect of the coil on the pot body 100.

[0097] In some embodiments, optionally, the distance between each part of the pot body 100 and the inner wall of the accommodating portion 620 is equal.

[0098] When the distances between each part of the pot body 100 and the inner wall of the accommodating portion 620 are equal, the shape of the accommodating portion 620 is adapted to the shape of the pot body 100, and the outer contour of the pot body 100 matches the contour of the inner wall of the accommodating portion 620, which is conducive to aligning the center line C2 of the accommodating portion 620 with the center line C1 of the pot body 100.

[0099] In other embodiments, the spacing deviation between various locations of the pot body 100 and the inner wall of the accommodating portion 620 may also be smaller.

[0100] Combination Figure 1 , Figure 2 and Figure 8 As shown, in some embodiments, optionally, the coil disk assembly 600 further includes: at least two second coils 500 , the second coils 500 are wound around the bottom of the coil support 300 , and the at least two second coils 500 are distributed at intervals along the circumference of the bottom of the coil support 300 .

[0101] A second coil 500 is wound around the bottom wall 120 of the coil bracket 300, and the second coil 500 corresponds to the bottom of the pot body 100. The first coil 200 heats the side of the pot body 100, and the second coil 500 heats the bottom of the pot body 100. When the side of the pot body 100 and the bottom of the pot body 100 are heated at the same time, the heating speed can be increased, and the heating uniformity of the rice-water mixture can also be improved, which is beneficial to improving the cooking effect of rice.

[0102] like Fig.11 As shown, in some embodiments, optionally, one of the two adjacent second coils 500 is set as the first sub-coil 510, and the other is set as the second sub-coil 520, and the current directions of the first sub-coil 510 and the second sub-coil 520 at adjacent positions are opposite ( Fig.11 , the arrows on the first sub-coil 510 and the second sub-coil 520 are used to indicate the direction of current).

[0103] The current directions of the two adjacent second coils 500 are opposite in the adjacent parts, so that the magnetic fields generated at the adjacent positions of the two adjacent second coils 500 are opposite in direction, and the adjacent magnetic fields with opposite directions will cancel each other to a certain extent, so that a weak energy area is presented between the two adjacent second coils 500. The heat from the side of the pot body 100 flows to the weak heat area, so that the heat flows from the outside of the pot body 100 to the inside of the pot body 100, so that the area to which the heat flows is larger and the path is longer, and heat exchange is formed between the various areas on the pot body 100, so that the rice-water mixture in the pot body 100 is evenly and fully heated, thereby greatly improving the uniformity of the moisture of the whole pot of rice and improving the taste of users.

[0104] In a possible embodiment, the cooking device further includes: an excitation circuit 700, and the excitation circuit 700 is electrically connected to the second coil 500. The first sub-coil 510 and the second sub-coil 520 have the same winding direction, and the connection mode of the input and output terminals of the first sub-coil 510 to the positive output and negative output of the excitation circuit 700 is the same as the connection mode of the input and output terminals of the second sub-coil 520 to the positive output and negative output of the excitation circuit 700. Alternatively, the first sub-coil 510 and the second sub-coil 520 have opposite winding directions, and the connection mode of the input and output terminals of the first sub-coil 510 to the positive output and negative output of the excitation circuit 700 is opposite to the connection mode of the input and output terminals of the second sub-coil 520 to the positive output and negative output of the excitation circuit 700.

[0105] The embodiment of the present application proposes to make the current directions in the two adjacent second coils 500 at the bottom the same, and make the current directions in the adjacent parts of the two adjacent second coils 500 opposite, so that the magnetic fields generated at adjacent positions of the two adjacent second coils 500 are opposite in direction, and the adjacent magnetic fields with opposite directions will cancel each other out to a certain extent, thereby presenting an energy weak area between the two adjacent second coils 500.

[0106] When the winding directions of two adjacent second coils 500 are the same, the two adjacent second coils 500 are both wound in a clockwise direction, or both are wound in a counterclockwise direction. The input end of the first sub-coil 510 is connected to the positive output of the excitation circuit 700, and the output end of the first sub-coil 510 is connected to the negative output of the excitation circuit 700. Similarly, the input end of the second sub-coil 520 is connected to the positive output of the excitation circuit 700, and the output end of the second sub-coil 520 is connected to the negative output of the excitation circuit 700. Thus, the current direction in the first sub-coil 510 is the same as the current direction in the second sub-coil 520.

[0107] When the winding directions of two adjacent second coils 500 are opposite, one second coil 500 is wound in a clockwise direction and the other second coil 500 is wound in a counterclockwise direction. When the incoming wire end of the first sub-coil 510 is connected to the positive output of the excitation circuit 700, the incoming wire end of the second sub-coil 520 is connected to the negative output of the excitation circuit 700. In this case, although the winding directions of two adjacent second coils 500 are opposite, the ends through which current is passed in two adjacent second coils 500 are different, which makes the current directions of two adjacent second coils 500 the same.

[0108] In the above manner, a weak heat area is formed between two adjacent second coils 500, and the heat on the side of the pot body 100 flows towards the weak heat area, causing the heat to flow from the outside of the pot body 100 to the inside of the pot body 100, making the area where the heat flows larger and the path longer, and forming heat exchange between various areas on the pot body 100, so that the rice-water mixture in the pot body 100 is uniformly and sufficiently heated, thus greatly improving the uniformity of the moisture content of the whole pot of rice and enhancing the user experience.

[0109] Exemplarily, the number of second coils 500 is 2, and the two second coils 500 are distributed in a "Lv" shape.

[0110] Exemplarily, the number of second coils 500 is 3, and the three second coils 500 are distributed in a "Pin" shape.

[0111] Exemplarily, the number of second coils 500 is 4, and the four second coils 500 are arranged in a shape.

[0112] In some embodiments, optionally, the current directions at the adjacent positions of the first coil 200 and the second coil 500 are the same ( Fig.11 in, the arrow on the first coil 200 is used to indicate the current direction, Figure 8 and the position of the dashed box is used to indicate the adjacent position of the first coil 200 and the second coil 500), so that the magnetic field directions generated at the adjacent positions of the first coil 200 and the second coil 500 are the same. The adjacent magnetic fields with the same direction will be superimposed to a certain extent, thus presenting an energy strong area between the first coil 200 and the second coil 500. The heat in the energy strong area will flow towards the energy weak area, thereby improving the heat exchange effect.

[0113] The current directions of the first coil 200 and the second coil 500 are the same, and their winding methods refer to the winding methods of the first sub-coil 510 and the second sub-coil 520 in the above embodiments.

[0114] In some embodiments, optionally, the pot body 100 has an opening 110 and a bottom wall 120, and from the opening 110 to the bottom wall 120, L1 gradually increases.

[0115] From the opening 110 of the pot body 100 to the bottom wall 120 of the pot body 100, the radius of the pot body 100 gradually decreases, while the spacing between the first coil 200 and the side of the pot body 100 gradually increases. The horizontal radius of the bottom side wall of the pot body 100 is small, the rice-water mixture is small, the horizontal working distance of the first coil 200 is large, and the heat acting on the pot body 100 is small. The horizontal radius of the top side wall of the pot body 100 is large, the rice-water mixture is large, the horizontal working distance of the first coil 200 is small, and the heat acting on the pot body 100 is large, which is conducive to achieving uniform heating of the rice-water mixture, making the hardness of the rice cooked by the cooking device more consistent, and improving the taste of the rice.

[0116] In some embodiments, optionally, the side of the pot body 100 includes a vertical section 130 and a transition section 140, and the vertical section 130 and the bottom wall 120 are connected through the transition section 140. From the top of the transition section 140 to the bottom of the transition section 140, the distance between the transition section 140 and the center line C1 of the pot body 100 decreases, and L1 gradually increases.

[0117] like Figure 3 As shown, the side shape of the pot body 100 is an oblique angle portion (transition section 140) plus a straight body portion (vertical section 130), and when the ratio of the height of the oblique angle portion to the total height is less than or equal to 45%, the first coil 200 covers most of the oblique angle portion and a small part of the straight body portion, and the horizontal working distance of the first coil 200 is inversely proportional to the horizontal radius of the pot body 100.

[0118] From the opening 110 of the pot body 100 to the bottom wall 120 of the pot body 100, the radius of the beveled portion gradually decreases, while the spacing between the first coil 200 and the side of the pot body 100 gradually increases, the horizontal radius of the bottom of the beveled portion is small, the rice-water mixture is small, the horizontal working distance of the first coil 200 is large, and the heat acting on the pot body 100 is small. The horizontal radius of the top of the pot body 100 is large, the rice-water mixture is large, the horizontal working distance of the first coil 200 is small, and the heat acting on the pot body 100 is large, which is conducive to achieving uniform heating of the rice-water mixture, making the hardness of the rice cooked by the cooking device more consistent, and improving the taste of the rice.

[0119] Combination Figure 8 , Fig. 9 and Fig.10 As shown, the side shape of the inner pot is an oblique angle portion plus a straight body portion, and when the ratio of the height of the oblique angle portion to the total height is greater than 45%, the first coil 200 covers most of the oblique angle portion and a small part of the straight body portion, and the horizontal working distance of the first coil 200 is inversely proportional to the horizontal radius of the pot body 100.

[0120] Combination Fig.11 , Fig.12 and Fig.13As shown, in some embodiments, optionally, the pot body 100 has an opening 110 and a bottom wall 120, and from the opening 110 to the bottom wall 120, the distance between the side of the pot body 100 and the center line C1 of the pot body 100 first increases and then decreases, and L1 first decreases and then increases.

[0121] The side of the inner pot is arc-shaped without a straight body. The first coil 200 covers the arc-shaped side of the pot body 100 from bottom to top. The horizontal working distance of the first coil 200 is inversely proportional to the horizontal radius of the side wall of the pot body 100. From the opening 110 to the bottom wall 120, the distance between the side of the pot body 100 and the center line C1 of the pot body 100 increases first and then decreases. In this case, from the opening 110 to the bottom wall 120, the horizontal working distance of the first coil 200 decreases first and then increases, which is conducive to achieving uniform heating of the rice-water mixture, making the hardness of the rice cooked by the cooking device more consistent, and improving the taste of the rice.

[0122] In some embodiments, optionally, the height of the pot body 100 from the opening 110 to the bottom wall 120 is H1, and a straight line L7 is set perpendicular to the center line C1 of the pot body 100. The maximum distance between the side of the pot body 100 and the center line C1 of the pot body 100 passes through the straight line L7, and the distance between the straight line L7 and the bottom wall 120 is H2, and H2 / H1≥0.65.

[0123] The pot body 100 is a spherical pot, and the horizontal radius of the pot body 100 increases first and then decreases from the pot mouth to the pot bottom. By setting the ratio of the highest point of the horizontal radius of the pot body 100 to the overall height of the inner pot to be no less than 65%, the heat generated by the pot body 100 can be more evenly transferred to the food at various positions in the pot body 100 while ensuring the volume of the inner pot, thereby improving the cooking effect.

[0124] Combination Figure 4 , Fig.10 and Fig.13 As shown, the first coil 200 located at the upper position has a smaller distance L11 from the side wall of the pot body 100 , and the first coil 200 located at the lower position has a larger distance L12 from the side wall of the pot body 100 .

[0125] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0126] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0127] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cooking device, characterized in that: include: Pot body; A coil disk assembly, the coil disk assembly comprising a coil support and a first coil, the first coil being wound on the coil support, the first coil being located at a side of the pot body, and the first coil being distributed along the circumference of the pot body; The distance between the first coil and the side of the pot body is L1, the distance between the side of the pot body and the center line of the pot body is L2, and L1 and L2 are inversely proportional.

2. The cooking device according to claim 1, characterized in that: The first coil has multiple turns, and the multiple turns of the first coil are distributed along the center line of the pot body. The number of turns of the first coil in the vertical direction along the center line of the pot body is consistent.

3. The cooking device according to claim 1, characterized in that: Along the extension direction of the center line of the pot body, the coil support is provided with multiple layers of winding grooves, the first coil is wound in the winding grooves, and along the direction perpendicular to the center line of the pot body, the thickness of the coil support corresponding to the winding groove position is L3, and L3 is inversely proportional to L2.

4. The cooking device according to claim 1, characterized in that: Along the extension direction of the center line of the pot body, the coil support is provided with multiple layers of winding grooves, and the first coil is wound in the winding grooves; The coil disk assembly also includes: A plurality of limiting ribs connected to the coil support, the plurality of limiting ribs being distributed at intervals along the circumference of the coil support, and the limiting ribs lifting the first coil above the bottom wall of the winding groove in a direction perpendicular to the center line of the pot body; Among them, along the direction perpendicular to the center line of the pot body, the thickness of the limiting rib is L4, and L4 is inversely proportional to L2.

5. The cooking device according to claim 4, characterized in that: L4 satisfies, 0.8mm≤L4≤10mm.

6. The cooking device according to any one of claims 1 to 5, characterized in that: The coil support is provided with a housing portion, and along a direction perpendicular to the center line of the housing portion, the distance between the inner wall of the housing portion and the first coil is L5, and the distance between the center line of the housing portion and the inner wall of the housing portion is L6, and L5 is inversely proportional to L6.

7. The cooking device according to claim 6, characterized in that The coil disk assembly also includes: The limiting portion is arranged on the inner wall of the accommodating portion, and the limiting portion is used to limit the movement of the pot body along a direction perpendicular to the center line of the accommodating portion.

8. The cooking device according to claim 6, characterized in that The distances between each part of the pot body and the inner wall of the accommodating portion are equal.

9. The cooking device according to any one of claims 1 to 5, characterized in that: The coil disk assembly also includes: At least two second coils are wound around the bottom of the coil support, and at least two second coils are distributed at intervals along the circumference of the bottom of the coil support.

10. The cooking device according to claim 9, characterized in that It is set that one of the two adjacent second coils is a first sub-coil and the other is a second sub-coil, and the current directions of the first sub-coil and the second sub-coil at adjacent positions are opposite.

11. The cooking device according to claim 10, characterized in that The cooking device also includes: an excitation circuit, the excitation circuit being electrically connected to the second coil; The first sub-coil and the second sub-coil have the same winding direction, and the connection mode between the input and output terminals of the first sub-coil and the output positive electrode and the output negative electrode of the excitation circuit is the same as the connection mode between the input and output terminals of the second sub-coil and the output positive electrode and the output negative electrode of the excitation circuit; Alternatively, the winding directions of the first sub-coil and the second sub-coil are opposite, and the connection method of the input and output terminals of the first sub-coil with the output positive pole and output negative pole of the excitation circuit is opposite to the connection method of the input and output terminals of the second sub-coil with the output positive pole and output negative pole of the excitation circuit.

12. The cooking device according to claim 9, characterized in that The current directions of the first coil and the second coil at adjacent positions are the same.

13. The cooking device according to any one of claims 1 to 5, characterized in that: The pot body has an opening and a bottom wall, and L1 gradually increases from the opening to the bottom wall.

14. The cooking device according to any one of claims 1 to 5, characterized in that: The pot body has an opening and a bottom wall, the side of the pot body includes a vertical section and a transition section, the vertical section and the bottom wall are connected through the transition section, and L1 gradually increases from the top of the transition section to the bottom of the transition section.

15. The cooking device according to any one of claims 1 to 5, characterized in that The pot body has an opening and a bottom wall, and from the opening to the bottom wall, L1 first decreases and then increases.

16. The cooking device according to claim 15, characterized in that The height of the pot body from the opening to the bottom wall is H1, and a straight line L7 is set perpendicular to the center line of the pot body. The maximum distance between the side of the pot body and the center line of the pot body passes through the straight line L7, and the distance between the straight line L7 and the bottom wall is H2, H2 / H1≥0.65.

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