A cooking liner and a cooking appliance

Abstract

The utility model belongs to kitchen utensil technical field discloses a kind of cooking inner bag and cooking utensil.The inner bag includes inner pot body, first magnetic layer and second magnetic layer, and the bottom area of inner pot body is externally provided with multiple first areas, and multiple first areas form second area between;First magnetic layer is covered in second area and multiple first areas;Second magnetic layer is covered in first magnetic layer, and it is opposite with multiple first areas.The first area position is the superposition of first magnetic layer and second magnetic layer, to form high magnetic conductive area, second area is only covered first magnetic layer, to form low magnetic conductive area, when inner bag is heated, dense boiling bubble is generated due to heat gathering at corresponding first area, boiling bubble drives water flow to roll and scatter cereal, so that cereal is heated more evenly, improve the fluffiness and taste of cereal after cooking.Due to the fact that second magnetic layer is covered on first magnetic layer, fusion shooting process can be used during processing, processing is convenient, and forming efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of kitchen utensils technology, and in particular to a cooking inner pot and cooking utensil. Background Technology

[0002] Some existing rice cookers use electromagnetic IH heating technology for cooking. It generates a high-frequency alternating magnetic field through a coil at the bottom of the rice cooker, which induces a current at the bottom of the inner pot, causing the inner pot to heat up. This heat is then transferred to the rice-water mixture inside the inner pot, achieving the heating effect. It has advantages such as high thermal efficiency, high power density, and fast heating.

[0003] In existing rice cookers using electromagnetic IH heating technology, the induced current directly heats the inner pot itself or a solid conductive plate is placed at the bottom of the inner pot to heat the entire bottom. When the rice cooker is working, the heat distribution at the bottom of the inner pot is relatively uniform, making it difficult to generate a large number of boiling bubbles to push the grains apart. Only the grains near the bottom of the pot are heated well, while the grains far from the bottom are basically cooked slowly by water transfer. At the same time, the location of the bubbles is random, so the fluffiness of the rice is also random and unstable, affecting the aroma and taste of the rice.

[0004] Therefore, there is an urgent need for a cooking liner and cooking appliance to solve the aforementioned problems in the existing technology. Utility Model Content

[0005] The purpose of this utility model is to provide a cooking inner pot and cooking utensil that can increase the amount of boiling bubbles generated when the inner pot is heated, improve the heat uniformity of grains, make the cooked food taste better, and is easy to process and has high forming efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Firstly, a cooking inner pot is provided, comprising:

[0008] The inner pot body has multiple first regions outside its bottom area, and a second region is formed between the multiple first regions.

[0009] A first magnetically conductive layer is disposed over the second region and the plurality of first regions;

[0010] A second magnetic conductive layer is disposed over the first magnetic conductive layer and is directly opposite to a plurality of the first regions.

[0011] As an optional solution for the cooking inner pot provided by this utility model, the inner bottom wall of the inner pot body is provided with a protruding structure that is directly opposite to the first region.

[0012] As an optional embodiment of the cooking inner pot provided by this utility model, the second magnetic conductive layer includes at least one magnetic conductive ring; the protruding structure is annular at the position directly opposite the magnetic conductive ring;

[0013] The magnetic ring is a closed circular magnetic block;

[0014] Alternatively, the magnetic ring may include a plurality of first magnetic blocks and a plurality of first magnetic segments, wherein the plurality of first magnetic blocks and the plurality of first magnetic segments are connected alternately in sequence, and the outer contour of the first magnetic block protrudes relative to the outer contour of the first magnetic segment.

[0015] As an optional solution for the cooking inner pot provided by this utility model, multiple magnetic rings are provided, and the multiple magnetic rings are concentric and spaced apart;

[0016] Adjacent magnetic rings are not connected to each other; or, the second magnetic layer further includes a second magnetic segment, and adjacent magnetic rings are connected through the second magnetic segment.

[0017] As an optional solution for the cooking inner pot provided by this utility model, the second magnetic layer further includes a second magnetic block disposed at the center point of the bottom region; the magnetic ring surrounds the second magnetic block;

[0018] The second magnetically conductive block is not connected to the adjacent magnetically conductive ring; or, the second magnetically conductive layer further includes a third magnetically conductive segment, through which the second magnetically conductive block is connected to the magnetically conductive ring.

[0019] As an optional solution for the cooking inner pot provided by this utility model, the second magnetic conductive layer includes a plurality of third magnetic conductive blocks, and the plurality of third magnetic conductive blocks are distributed in a dotted interval.

[0020] The protruding structures are distributed in a dotted pattern and are directly opposite to the plurality of the third magnetic blocks.

[0021] As an optional solution for the cooking inner pot provided by this utility model, the first area is provided with an embedding groove, and the first magnetic conductive layer is partially disposed in the embedding groove.

[0022] As an optional embodiment of the cooking inner pot provided by this utility model, the thickness of the first magnetic conductive layer is 0.2mm to 0.5mm;

[0023] And / or, the thickness of the second magnetic layer is 0.2 mm to 0.5 mm.

[0024] As an optional solution for the cooking inner pot provided by this utility model, the outer contour of the first magnetic conductive layer is circular.

[0025] In a second aspect, a cooking appliance is provided, including a coil and a cooking inner pot as described above, wherein the coil is disposed at the bottom of the cooking inner pot.

[0026] The beneficial effects of this utility model are:

[0027] This invention provides a cooking inner pot and a cooking appliance containing the inner pot. A first magnetic layer is applied to a first region and a second region of the inner pot body, and a second magnetic layer is applied on top of the first magnetic layer, directly opposite multiple first regions. This creates a high magnetic permeability region where the first and second magnetic layers overlap, while the second regions are covered only with the first magnetic layer, creating a low magnetic permeability region. When the inner pot is heated using electromagnetic induction heating (IH) technology, the self-heating efficiency is lower in the low magnetic permeability region, while it is higher and generates more heat in the high magnetic permeability region where the first and second magnetic layers are stacked. Therefore, heat is concentrated in the first region at the bottom of the inner pot, while less heat is distributed in the second region. This causes dense boiling bubbles to form on the inner wall of the inner pot at the corresponding first regions due to heat accumulation. The rising boiling bubbles cause the water to tumble, which on one hand conducts heat more quickly to areas far from the bottom of the inner pot, and on the other hand, the tumbling water helps to break up grains, resulting in more even heating and improved fluffiness and texture after cooking. Moreover, since the first and second regions of the cooking pot are both equipped with a first magnetic conductive layer, the entire bottom of the pot can generate heat, improving the heating efficiency of grains.

[0028] Since the second magnetic layer is applied over the first magnetic layer, a spraying process can be used during processing to directly spray two layers of magnetic material onto the bottom area of ​​the inner pot body to form the first and second magnetic layers. Moreover, the same two layers of material can be selected for spraying during the process, which is convenient and efficient. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0030] Figure 1 This is a plan view of the cooking inner pot provided in Embodiment 1 of this utility model;

[0031] Figure 2 This is a cross-sectional view of the inner pot body of the cooking inner pot provided in Embodiment 2 of this utility model;

[0032] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0033] Figure 4 This is a cross-sectional view of the cooking inner pot provided in Embodiment 3 of this utility model;

[0034] Figure 5 This is a cross-sectional view of the cooking inner pot provided in Embodiment 4 of this utility model;

[0035] Figure 6 yes Figure 5 A magnified view of a section at point C;

[0036] Figure 7 This is a plan view of the cooking inner pot provided in Embodiment 5 of this utility model;

[0037] Figure 8 This is an isometric view of the cooking inner pot provided in Embodiment 5 of this utility model;

[0038] Figure 9 This is a plan view of the cooking inner pot provided in Embodiment Six of this utility model;

[0039] Figure 10 This is a plan view of the cooking inner pot provided in Embodiment 7 of this utility model;

[0040] Figure 11 This is an isometric view of the cooking inner pot provided in Embodiment 8 of this utility model;

[0041] Figure 12 This is a plan view of the cooking inner pot provided in Embodiment 8 of this utility model;

[0042] Figure 13 This is an isometric view of the cooking inner pot provided in Embodiment Nine of this utility model;

[0043] Figure 14 This is a plan view of the cooking inner pot provided in Embodiment Nine of this utility model;

[0044] Figure 15 This is a plan view of the cooking inner pot provided in Embodiment 10 of this utility model;

[0045] Figure 16 This is an isometric view of the cooking inner pot provided in Embodiment Eleven of this utility model;

[0046] Figure 17 This is a plan view of the cooking inner pot provided in Embodiment Twelve of this utility model;

[0047] Figure 18 This is a plan view of the cooking inner pot provided in Embodiment Thirteen of this utility model.

[0048] In the picture:

[0049] 1. Inner pot body; 2. Second magnetic conductive layer; 3. First magnetic conductive layer;

[0050] 11. Bottom wall; 12. Lower side wall; 13. Upper side wall;

[0051] 101. First region; 102. Second region; 103. Embedded groove; 104. Protruding structure; 1041. Guide arc surface;

[0052] 21. Magnetic ring;

[0053] 211. Circular magnetically conductive block; 212. First magnetically conductive block; 213. First magnetically conductive segment;

[0054] 22. Second magnetic conductive section; 23. Second magnetic conductive block; 24. Third magnetic conductive section; 25. Third magnetic conductive block. Detailed Implementation

[0055] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0056] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0059] In this embodiment, the term "and / or" is merely a description of the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0060] In the embodiments of this utility model, the same reference numerals denote the same parts, and for the sake of brevity, detailed descriptions of the same parts are omitted in different embodiments.

[0061] like Figures 1 to 18 As shown, this utility model embodiment provides a cooking inner pot that can increase the amount of boiling bubbles generated when the inner pot is heated, improve the heating uniformity of grains, make the cooked food taste better, and is easy to process and has high forming efficiency.

[0062] Specifically, see Figure 1 , Figure 2 as well as Figure 3 The cooking pot includes an inner pot body 1, a first magnetic layer 3, and a second magnetic layer 2. Multiple first regions 101 are located outside the bottom area of ​​the inner pot body 1, and a second region 102 is formed between the multiple first regions 101. The first magnetic layer 3 covers the second region 102 and the multiple first regions 101; the second magnetic layer 2 covers the first magnetic layer 3 and is directly opposite the multiple first regions 101.

[0063] The cooking inner pot provided in this embodiment has a first magnetically conductive layer 3 covering the first region 101 and the second region 102 of the inner pot body 1, and a second magnetically conductive layer 2 covering the first magnetically conductive layer 3, which is directly opposite to the multiple first regions 101. This results in the first region 101 being a superposition of the first magnetically conductive layer 3 and the second magnetically conductive layer 2, forming a high magnetic permeability region, while the second region 102 is only covered with the first magnetically conductive layer 3, forming a low magnetic permeability region. When the inner pot is heated using electromagnetic IH heating technology, the self-heating efficiency of the inner pot body 1 is low in the low magnetic permeability region, while the self-heating efficiency is high and the heat generation is large in the high magnetic permeability region where the first magnetically conductive layer 3 and the second magnetically conductive layer 2 are superimposed. Therefore, the heat in the bottom region of the entire inner pot can be concentrated in the first region 101, while the heat distribution in the second region 102 is less, causing dense boiling bubbles to be generated on the inner wall of the inner pot at the corresponding first region 101 due to heat accumulation. The rising bubbles from the boiling water cause the water to churn, which on the one hand transfers heat more quickly to areas far from the bottom of the inner pot, and on the other hand, the churning of the water makes it easier to break up the grains, resulting in more even heating and improved fluffiness and texture after cooking. Furthermore, because both the first region 101 and the second region 102 of the cooking inner pot are equipped with a first magnetic layer 3, heat is generated throughout the bottom of the inner pot, improving the heating efficiency of the grains.

[0064] Since the second magnetic layer 2 is applied over the first magnetic layer 3, a spraying process can be used during processing to directly spray two layers of magnetic material onto the bottom area of ​​the inner pot body 1 to form the first magnetic layer 3 and the second magnetic layer 2. Moreover, the same two layers of material can be selected for spraying during the spraying process, which is convenient and has high forming efficiency.

[0065] For example, a spraying process can be used to directly spray two identical magnetically conductive materials onto the bottom region of the inner pot body 1, sequentially forming a first magnetically conductive layer 3 and a second magnetically conductive layer 2. This creates high-magnetic-permeability regions and low-magnetic-permeability regions on the inner pot body 1. Compared to methods that require separate spraying of high-magnetic-permeability and low-magnetic-permeability materials, this simplifies the process and reduces the types of materials needed. Furthermore, the spraying process reduces post-processing complexity and manufacturing costs, and the first magnetically conductive layer 3 adheres well to the inner pot body 1, preventing high-frequency vibration noise during use.

[0066] It can be understood that the thickness of the magnetic material covering the first region 101 is greater than the thickness of the magnetic material covering the second region 102.

[0067] In this embodiment, the thickness of the first magnetic conductive layer 3 is 0.2mm to 0.5mm; the thickness of the second magnetic conductive layer 2 is 0.2mm to 0.5mm. The thickness of the first magnetic conductive layer 3 and the second magnetic conductive layer 2 is such that they are not too thick, which would lead to waste of magnetic conductive material and excessive heat generation of the inner liner, and the thickness is not too thin, which would lead to insufficient heat generation or the disappearance of heat accumulation.

[0068] For example, the thickness of the first magnetically conductive layer 3 is 0.3 mm, and the thickness of the second magnetically conductive layer 2 is 0.3 mm. That is, the total thickness of the magnetically conductive material covering the first region is 0.6 mm.

[0069] Optionally, the outer contour of the first magnetic conductive layer 3 is circular. The circular outer contour is adapted to the shape of the inner pot body, and a circular mold can be used when the first magnetic conductive layer 3 is welded using the spraying process, further simplifying the process.

[0070] See Figure 2 and Figure 3 The inner bottom wall of the inner pot body 1 is provided with a protruding structure 104 that is directly opposite to the first region 101.

[0071] By setting up the raised structure 104, when dense boiling bubbles are generated on the inner wall of the inner pot in the first area 101, the raised structure 104 can guide the boiling bubbles to rise upwards. The boiling bubbles rise along the raised structure 104, penetrate the grains and burst on the water surface, thereby forming multiple steam bubble channels inside the grains. The vaporized steam transfers heat to areas far from the bottom of the inner pot more quickly, allowing the grains in the whole pot to be heated evenly, improving the aroma and elasticity of the grains.

[0072] For example, grains can be rice, oats, sorghum, and various beans, etc.

[0073] Optionally, the inner pot body 1 is made of a non-magnetic material to ensure that the second region 102 has a low heating efficiency. For example, the inner pot body 1 is made of aluminum alloy, stainless steel, ceramic, or glass.

[0074] Optionally, the materials of the first magnetic layer 3 and the second magnetic layer 2 can be iron, iron alloy, ferrite, SUS430, or other materials that can generate heat when electromagnetically heated, but are not limited to the listed materials.

[0075] In some embodiments, such as Figure 4 , Figure 5 as well as Figure 6 As shown, the outer wall of the bottom region of the inner pot body 1 is a smooth, non-recessed surface, with the first region 101 and the second region 102 flush. The first magnetically conductive layer 3 is directly applied to the surfaces of the first region 101 and the second region 102, protruding relative to the outer wall of the bottom region of the inner pot body 1. The second magnetically conductive layer 2 is directly applied to the first magnetically conductive layer 3, protruding relative to the first magnetically conductive layer 3, ensuring that the thickness of the magnetically conductive material in the first region 101 is greater than the thickness of the magnetically conductive material in the second region 102.

[0076] In some embodiments, such as Figure 2 and Figure 3As shown, the first region 101 is provided with an embedding groove 103, and the first magnetic layer 3 is partially disposed in the embedding groove 103. After the first magnetic layer 3 is welded, the portion of the first magnetic layer 3 located in the first region 101 is located in the embedding groove. Therefore, the portion of the first magnetic layer 3 located in the first region 101 is recessed compared to the portion located in the second region 102. Subsequently, the second magnetic layer 2 can be welded in this recessed area, thereby reducing the amount of protrusion of the second magnetic layer 2 relative to the first magnetic layer 3, and even making the second magnetic layer 2 flush with the first magnetic layer 3. This reduces wear on the inner liner during use and cleaning, and prevents the second magnetic layer 2 from falling off or its thermal conductivity from decreasing due to long-term severe wear.

[0077] In addition, by setting the embedding groove 103, the firmness of the first magnetic layer 3 on the inner pot body 1 can be improved, and it can be prevented from falling off. At the same time, it can also increase the contact area between the first magnetic layer 3 and the inner pot body 1, increase the heat conduction area of ​​the first region 101, and make the heat of the first region 101 more concentrated.

[0078] Optionally, the depth of the recess 103 is greater than or equal to 0.2 mm and less than or equal to 0.8 mm.

[0079] For example, the depth of the recess 103 is 0.2mm, 0.3mm, 0.5mm, 0.8mm, etc., but is not limited to the specific values ​​and ranges listed above.

[0080] like Figure 2 and Figure 5 As shown, the inner pot body 1 includes a bottom wall 11, a lower side wall 12 and an upper side wall 13. The lower side wall 12 extends upward from the bottom wall 11 and connects with the upper side wall 13. The bottom area includes the bottom wall 11 and the lower side wall 12.

[0081] In some embodiments, the first magnetic layer 3 is applied to the bottom wall 11 (i.e., the bottom wall 11 includes the first region 101 and the second region 102 mentioned above), which concentrates the heating on the bottom wall 11, thereby reducing the difficulty of the process and the amount of magnetic material used while ensuring the heat accumulation effect.

[0082] In other embodiments, the first magnetic layer 3 may be applied to the bottom wall 11 and the lower side wall 12 (i.e., the bottom wall 11 and the lower side wall 12 include the first region 101 and the second region 102 mentioned above) to increase the area covered by the magnetic material, increase the heated area at the bottom of the inner liner, and help improve heating efficiency and heating uniformity.

[0083] like Figure 7 and Figure 8 As shown, the second magnetic layer 2 includes at least one magnetic ring 21. The magnetic ring 21 enables the bottom of the inner pot body 1 to be heated circumferentially, thereby generating a ring of boiling bubbles during cooking and improving the heating uniformity of the grains in the whole pot.

[0084] In this embodiment, the magnetic ring 21 is a closed ring with its ends connected. Of course, in other embodiments, the magnetic ring 21 can also be a non-closed ring. For example, multiple strip-shaped (or circular, or polygonal) magnetically conductive structures are arranged in a ring with intervals between them.

[0085] When the IH coil at the bottom of the inner liner operates to heat the inner liner, the presence of the magnetic ring 21 makes it easier for the induced current to form a closed loop, improving heating efficiency and making it easier to generate dense boiling bubbles at the bottom of the inner liner. Correspondingly, the protruding structure 104 is ring-shaped at the position directly opposite the magnetic ring 21 to fully guide the boiling bubbles.

[0086] In some embodiments, see Figure 7 , Figure 8 as well as Figure 16 The magnetic ring 21 is a circular magnetic block 211, and the raised structure 104 on the bottom wall of the inner pot body 1 is circular. This design simplifies manufacturing, improves production efficiency, and fully utilizes the heat generated by the magnetic material. Furthermore, when the magnetic ring 21 is a circular magnetic block 211, the embedding groove 103 in the first region 101 of the inner pot body 1 is circular. For example, multiple concentric circular embedding grooves 103 can be provided at the bottom of the inner pot body 1. In this case, the width of the embedding groove 103 is greater than or equal to 0.5 mm and less than or equal to 5 mm. Exemplarily, the width of the embedding groove 103 can be 0.5 mm, 1 mm, 1.5 mm, 1.9 mm, 2 mm, 3 mm, 4 mm, 4.5 mm, 5 mm, etc., but is not limited to the specific values ​​and ranges listed.

[0087] Optionally, at least two embedding slots 103 are provided at intervals. Specifically... Figure 2 Multiple embedded slots 103 are arranged in a circular and concentric pattern. The distance between adjacent embedded slots 103 is greater than or equal to 1 mm and less than or equal to 10 mm. If the distance between adjacent embedded slots 103 is too small, the adjacent circular magnetic blocks 211 will affect each other, and the heat accumulation phenomenon will not be obvious, making it difficult to generate dense boiling bubbles. If the distance between adjacent embedded slots 103 is too large, the yield of boiling bubbles will be less, and the stirring effect on the grain will be poor.

[0088] For example, the spacing between adjacent embedding slots 103 can be 1mm, 2mm, 5mm, 7mm, 8mm, 9mm, 10mm, etc., but is not limited to the specific values ​​and ranges listed.

[0089] In other embodiments, see Figure 9 , Figure 10 , Figure 11 as well as Figure 12As shown, the magnetic ring 21 includes multiple first magnetic blocks 212 and multiple first magnetic segments 213. The multiple first magnetic blocks 212 and multiple first magnetic segments 213 are connected alternately in sequence to form the magnetic ring 21. The outer contour of the first magnetic block 212 protrudes relative to the outer contour of the first magnetic segment 213. That is, the multiple first magnetic blocks 212 are connected through multiple first magnetic segments 213 to form the magnetic ring 21. This makes it easier for the induced current at the bottom of the inner liner to form a closed loop when the IH coil is working, thus improving heating efficiency. At the same time, because the outer contour of the first magnetic block 212 protrudes relative to the outer contour of the first magnetic segment 213, its coverage area is larger, which can increase the area where boiling bubbles are generated and make the bubble distribution more uniform.

[0090] For example, the first magnetic block 212 is a circular block, the first magnetic segment 213 is an arc segment, and multiple first magnetic blocks 212 are evenly distributed around the circumference and connected by the arc-shaped first magnetic segment 213, which reduces the difficulty of the process and improves the uniformity of heat distribution on the path of the magnetic ring 21.

[0091] Of course, in other embodiments, the first magnetically conductive block 212 can also be an elliptical block, a triangular block, or other polygonal blocks, etc. The first magnetically conductive segment 213 can be a straight line extension, a curved extension, etc.

[0092] In this embodiment, the shape of the protrusion structure 104 is adapted to the plurality of first magnetic blocks 212 and the plurality of first magnetic segments 213. That is, the protrusion structure 104 is circular at the position directly opposite the circular first magnetic block 212 and arc-shaped at the position directly opposite the arc-shaped first magnetic segment 213.

[0093] It should be noted that the shapes and sizes of the first magnetic blocks 212 in the plurality of magnetic rings 21, and the plurality of first magnetic blocks 212 in a single magnetic ring 21, may be the same or different. For example, as shown... Figure 9 As shown, all the first magnetically conductive blocks 212 are circular and have the same diameter. Figure 10 As shown, the multiple first magnetic blocks 212 in each magnetic ring 21 are all circular and have the same diameter, but the diameters of the first magnetic blocks 212 contained in two adjacent magnetic rings 21 are different.

[0094] In some embodiments, multiple magnetic rings 21 are covered on the first magnetic layer 3. The multiple magnetic rings 21 are concentric and spaced apart, so that multiple first areas 101 where heat is concentrated are dispersed at the bottom of the inner liner, thereby increasing the density of boiling bubbles.

[0095] For example, at least three magnetic rings 21 are provided, spaced apart at the bottom of the inner pot body 1, to ensure heating efficiency and uniformity.

[0096] In some embodiments, adjacent magnetic rings 21 are not connected to each other. For example... Figure 7 and Figure 8 As shown, the magnetic ring 21 is a circular magnetic block 211, and there are gaps between adjacent circular magnetic blocks 211 that are not connected to each other, such as... Figure 9 and Figure 10 As shown, the magnetic ring 21 is formed by alternating connection of multiple first magnetic blocks 212 and multiple first magnetic segments 213. There are gaps between adjacent magnetic rings 21 and they are not connected to each other. Multiple magnetic rings 21 can be directly set at the bottom of the inner pot body 1, which makes the processing more convenient.

[0097] In other embodiments, such as Figure 11 , Figure 12 as well as Figure 16 As shown, the second magnetic layer 2 also includes a second magnetic section 22. Adjacent magnetic rings 21 are connected by the second magnetic section 22, which enables more high magnetic permeability areas to be distributed at the bottom of the inner pot body 1, thereby increasing the number of local heating zones and the area where boiling bubbles are generated. When the entire inner pot is working, the distribution of boiling bubbles inside is more uniform, which helps to improve heating efficiency and heating uniformity.

[0098] For example, see Figure 12 and Figure 16 Multiple magnetic rings 21 are concentrically spaced, with their center at the center point of the bottom region of the inner pot body 1, so that the entire second magnetic layer 2 is roughly evenly distributed in the bottom region of the inner pot body 1. Furthermore, multiple second magnetic segments 22 are connected between adjacent magnetic rings 21 and are evenly distributed. The second magnetic segments 22 between each magnetic ring 21 are arranged facing each other to form a straight line, simplifying the process.

[0099] Optionally, the second magnetically conductive segment 22 can extend in a straight line or in a curve.

[0100] like Figures 7 to 12 As shown, the second magnetic layer 2 also includes a second magnetic block 23 that is disposed on the first magnetic layer 3 and located at the center point of the bottom region; the magnetic ring 21 surrounds the second magnetic block 23 so that the second magnetic layer 2 is distributed from the center point of the bottom region to the periphery, ensuring that boiling bubbles can be generated from the center to the periphery of the inner liner, and avoiding uneven heating.

[0101] In some embodiments, such as Figures 7 to 10 As shown, the second magnetic block 23 is not connected to the adjacent magnetic ring 21, which simplifies the manufacturing process.

[0102] In other embodiments, such as Figure 11 and Figure 12As shown, the second magnetic layer 2 also includes a third magnetic segment 24. The second magnetic block 23 is connected to the magnetic ring 21 through the third magnetic segment 24, so that there is a first area 101 covered by the third magnetic segment 24 between the second magnetic block 23 and the adjacent magnetic ring 21. When the inner liner is heated, dense boiling bubbles can also be generated between the second magnetic block 23 and the adjacent magnetic ring 21, which improves heating efficiency and heating uniformity.

[0103] Furthermore, multiple third magnetic segments 24 are provided between the second magnetic block 23 and the adjacent magnetic ring 21. The multiple third magnetic segments 24 are evenly distributed to improve the uniformity of bubble distribution. When a second magnetic segment 22 is provided between adjacent magnetic rings 21, the second magnetic segment 22 can be directly aligned with the third magnetic segment 24 to form a straight line.

[0104] For example, the second magnetically conductive block 23 can be a circular block, an elliptical block, a triangular block, or other polygonal blocks, etc., but is not limited to the shapes listed. The third magnetically conductive segment 24 can extend in a straight line or in a curve. It is understood that the protrusion structure 104 at the position directly opposite the second magnetically conductive block 23 and the third magnetically conductive segment 24 has a shape adapted to the second magnetically conductive block 23 and the third magnetically conductive segment 24. Further, as Figure 9 and Figure 10 As shown, when multiple magnetic rings 21 including a first magnetic block 212 are provided, the shape and size of the first magnetic block 212 in each magnetic ring 21 can be the same or different.

[0105] like Figure 13 , Figure 14 as well as Figure 15 In some embodiments, the second magnetic layer 2 further includes multiple third magnetic blocks 25, which are distributed in a dotted pattern at intervals, so that the second magnetic layer 2 can be dispersed throughout the bottom area of ​​the entire inner pot body 1. This results in multiple first regions 101 that can concentrate heat in the bottom area, making the heat concentration phenomenon more obvious and improving heating efficiency and uniformity. The protruding structures 104 are distributed in a dotted pattern and are directly opposite the multiple third magnetic blocks 25, so as to guide the boiling bubbles generated at the positions of the multiple third magnetic blocks 25 one by one.

[0106] Optionally, the third magnetically conductive block 25 can be a circular block, an elliptical block, a triangular block, or other polygonal blocks, etc., but is not limited to the shapes listed. Multiple third magnetically conductive blocks 25 can have the same size and different shapes. See also Figure 14 and Figure 15 Each of the third magnetically conductive blocks 25 is a circular block, and their diameters may be the same or different. For example, such as... Figure 15 As shown, the diameters of the third magnetic blocks 25 in two adjacent rings are different.

[0107] In some embodiments, multiple third magnetic blocks 25 are arranged in a ring array, and a third magnetic block 25 is arranged at the center point of the bottom area of ​​the inner pot body 1, so that the distribution of the first area 101 that can generate heat accumulation in the entire bottom area is more uniform.

[0108] Accordingly, the shape and distribution of the protrusion structure 104 are the same as those of the third magnetic block 25, so as to fully guide the boiling bubbles in the heat accumulation zone to rise.

[0109] like Figure 3 As shown, the raised structure 104 has a guiding arc surface 1041, which extends from the inner bottom wall of the inner pot body 1 to the top of the raised structure 104, so that the boiling bubbles can gradually rise along the guiding arc surface 1041, resulting in better guidance and easier cleaning by the user.

[0110] For example, the cross-section of the protrusion structure 104 is arc-shaped, which can form the aforementioned guiding arc surface 1041, making it easier to guide the bubbles to rise and making it more convenient to clean the inner wall of the inner pot body 1.

[0111] In some embodiments, in addition to the melt spraying process, processes such as plasma spraying and 3D printing can also be used to set the first magnetic layer 3 and the second magnetic layer 2 outside the bottom area of ​​the inner pot body 1.

[0112] In other embodiments, the second magnetic layer 2 can be pre-formed, for example, it can be made of iron or an iron alloy. Figure 16 As shown, the pre-processed second magnetic layer 2 can be fixedly installed on the first magnetic layer 3 through processes such as friction pressure welding, brazing, physical inlay, and MIM, resulting in lower production costs.

[0113] It is understood that in some embodiments, the second magnetic layer 2 may include one or a combination of two or more of the following: the annular magnetic block 211, the first magnetic block 212 and the first magnetic segment 213 forming a magnetic ring 21, the second magnetic block 23, the second magnetic segment 22, the third magnetic block 25, the third magnetic segment 24, etc.

[0114] This utility model embodiment also provides a cooking appliance, including a coil and a cooking inner pot as described above, with the coil disposed at the bottom of the cooking inner pot. Specifically, the coil is an IH coil. The cooking appliance with the aforementioned cooking inner pot generates a large number of dense boiling bubbles when heated by the coil. The rising of these boiling bubbles causes the water to churn, which on the one hand, conducts heat more quickly to areas far from the bottom of the inner pot; on the other hand, the churning of the water makes it easier to break up the grains, resulting in more even heating and improved fluffiness and texture after cooking. Simultaneously, it simplifies the processing and improves production efficiency.

[0115] To more clearly describe the cooking inner pot provided in the embodiments of this utility model, thirteen embodiments are listed below to further illustrate the arrangement of the second magnetic layer 2, but the arrangement of the second magnetic layer 2 covering the first magnetic layer 3 is far more than this.

[0116] Example 1

[0117] This embodiment provides a cooking inner pot. A first magnetic layer 3 is coated on multiple first regions 101 and second regions 102, and its outer contour is circular, but it can also be other shapes. The second magnetic layer 2 includes multiple third magnetic blocks 25 coated on the first magnetic layer 3 and distributed in a dotted pattern. The third magnetic blocks 25 can be, for example, Figure 1 The shape shown can be a circle, or it can be a polygon, an ellipse, or other shapes.

[0118] The third magnetic block 25 and the first magnetic layer 3 can be formed on the inner pot body 1 by a melting process, or they can be set on the inner pot body 1 by other processes, without specific limitations.

[0119] For example, the thickness of the first magnetically conductive layer 3 is 0.3 mm. The thickness of the third magnetically conductive block 25 is 0.3 mm. That is, the total thickness of the magnetically conductive material covering the first region 101 is 0.6 mm.

[0120] Example 2

[0121] like Figure 2 and Figure 3 As shown, in the cooking inner pot provided in this embodiment, a plurality of concentrically distributed annular embedding grooves 103 are provided in the first region 101 on the outer side of the bottom wall 11 of the inner pot body 1. The first magnetic conductive layer 3 is partially located in the embedding grooves 103. After the first magnetic conductive layer 3 is embedded, a second magnetic conductive layer 2 is formed by further embedding on the first magnetic conductive layer 3 in the region directly opposite the embedding grooves 103.

[0122] Example 3

[0123] like Figure 4 As shown, in the cooking inner pot provided in this embodiment, the bottom is not provided with an embedded groove 103, but the first magnetic conductive layer 3 is directly covered on the outer surface of the bottom wall 11 of the inner pot body 1. The second magnetic conductive layer 2 covered on the first magnetic conductive layer 3 can be multiple annular magnetic conductive blocks 211, etc.

[0124] Example 4

[0125] like Figure 5 and Figure 6As shown, in the cooking pot provided in this embodiment, the bottom wall 11 and the lower side wall 12 are both covered with a first magnetic conductive layer 3, resulting in a relatively large overall heating area. The bottom of the cooking pot does not have an embedded groove 103; instead, the first magnetic conductive layer 3 is directly applied to the outer surface of the bottom wall 11 of the inner pot body 1. The second magnetic conductive layer 2 applied on the first magnetic conductive layer 3 can be multiple annular magnetic conductive blocks 211, multiple dotted third magnetic conductive blocks 25, etc., and is not limited here.

[0126] Example 5

[0127] like Figure 7 and Figure 8 As shown, in the cooking inner pot provided in this embodiment, the second magnetic conductive layer 2 includes a plurality of concentrically arranged annular magnetic conductive blocks 211 distributed on the bottom wall 11 and the lower side wall 12, and the center of each annular magnetic conductive block 211 is the center point of the inner pot body 1. The distance between adjacent annular magnetic conductive blocks 211 is approximately equal.

[0128] Furthermore, the second magnetic layer 2 also includes a second magnetic block 23, which is positioned directly opposite the center of the bottom wall 11 of the inner pot body 1. The second magnetic block 23 is not connected to the adjacent annular magnetic block 211.

[0129] Specifically, the raised structure 104 of the inner bottom wall of the inner pot body 1 includes a plurality of concentrically distributed raised rings and a central protrusion located at the center and directly opposite the second magnetic block 23.

[0130] Example 6

[0131] like Figure 9 As shown, in the cooking inner pot provided in this embodiment, the second magnetic conductive layer 2 includes a plurality of concentrically arranged magnetic conductive rings 21 distributed on the bottom wall 11 and the lower side wall 12, and the magnetic conductive rings 21 are formed by a plurality of first magnetic conductive blocks 212 and a plurality of first magnetic conductive segments 213 connected alternately in sequence. The distance between adjacent magnetic conductive rings 21 is approximately equal and they are not connected to each other, and the first magnetic conductive blocks 212 in each magnetic conductive ring 21 are all circular blocks of the same size.

[0132] Furthermore, the second magnetic layer 2 also includes a second magnetic block 23. The second magnetic block 23 is positioned directly opposite the center of the bottom wall 11 of the inner pot body 1. The second magnetic block 23 is not connected to the adjacent magnetic ring 21.

[0133] Specifically, the raised structure 104 on the inner bottom wall of the inner pot body 1 includes multiple concentrically distributed raised rings with the same shape as the magnetic ring 21, and a central protrusion located at the center and directly opposite the second magnetic block 23. That is, the raised ring includes multiple first raised blocks and multiple first raised segments connected alternately in sequence, with the first raised blocks directly opposite the first magnetic block 212 and the first raised segments directly opposite the first magnetic segment 213.

[0134] Example 7

[0135] like Figure 10 As shown, in the cooking inner pot provided in this embodiment, the second magnetic layer 2 includes a plurality of concentrically arranged magnetic rings 21 distributed on the bottom wall 11 and the lower side wall 12, and the magnetic rings 21 are formed by a plurality of first magnetic blocks 212 and a plurality of first magnetic segments 213 connected alternately in sequence. The distance between adjacent magnetic rings 21 is approximately equal and they are not connected to each other. The first magnetic blocks 212 in each magnetic ring 21 are all circular blocks, and the size of the first magnetic blocks 212 in two adjacent magnetic rings 21 is different. Specifically, in the protrusion structure 104 of this embodiment, the size of the first protrusion blocks in two adjacent protrusion rings is different.

[0136] Furthermore, the second magnetic layer 2 also includes a second magnetic block 23. The second magnetic block 23 is positioned directly opposite the center of the bottom wall 11 of the inner pot body 1. The second magnetic block 23 is not connected to the adjacent magnetic ring 21.

[0137] Example 8

[0138] like Figure 11 and Figure 12 As shown, the cooking inner pot provided in this embodiment is a further improvement on the one in Embodiment Six.

[0139] The second magnetically conductive layer 2 also includes a second magnetically conductive segment 22 and a third magnetically conductive segment 24. Multiple second magnetically conductive segments 22 are disposed between adjacent magnetically conductive rings 21, and multiple third magnetically conductive segments 24 are disposed between the second magnetically conductive block 23 and the adjacent magnetically conductive ring 21. The third magnetically conductive segment 24 and the multiple second magnetically conductive segments 22 all extend in a straight line and are connected in a straight line along the radial direction of the inner pot body 1, forming a mesh structure for the entire second magnetically conductive layer 2.

[0140] Specifically, the two ends of the second magnetically conductive segment 22 are connected to two first magnetically conductive blocks 212; the two ends of the third magnetically conductive segment 24 are respectively connected to the second magnetically conductive block 23 and the first magnetically conductive block 212.

[0141] Furthermore, the protrusion structure 104 also includes a second protrusion section directly opposite the second magnetic conductive section 22, and a third protrusion section directly opposite the third magnetic conductive section 24.

[0142] Example 9

[0143] like Figure 13 and Figure 14 As shown, in the cooking liner provided in this embodiment, the second magnetic layer 2 includes a plurality of third magnetic blocks 25 distributed in a dotted pattern.

[0144] Specifically, the multiple third magnetic blocks 25 are all circular blocks of the same size. One third magnetic block 25 is located at the center point directly opposite the bottom wall 11, and the remaining third magnetic blocks 25 are arranged in a ring array with the central third magnetic block 25 as the center.

[0145] In this embodiment, the protrusion structure 104 includes a second protrusion that is directly opposite to a plurality of third magnetic blocks 25. Each second protrusion is circular in shape and of the same size.

[0146] Example 10

[0147] like Figure 15 As shown, the cooking inner pot provided in this embodiment differs from that in Embodiment Nine.

[0148] In this embodiment, the multiple third magnetic blocks 25 in each ring are all circular blocks of the same size, but the third magnetic blocks 25 in two adjacent rings are of different sizes.

[0149] In this embodiment, the protrusion structure 104 includes a second protrusion block that is directly opposite to a plurality of third magnetic blocks 25. Each second protrusion block is circular in shape, and the size of the second protrusion blocks in two adjacent rings is different.

[0150] Example 11

[0151] like Figure 16 As shown, in the cooking inner pot provided in this embodiment, the second magnetic conductive layer 2 is pre-formed and includes multiple concentrically arranged annular magnetic conductive blocks 211, with adjacent annular magnetic conductive blocks 211 connected together by multiple second magnetic conductive segments 22. Along the radial direction of the inner pot body 1, the multiple second magnetic conductive segments 22 are connected in a straight line. After the first magnetic conductive layer 3 is applied to the bottom area of ​​the inner pot body 1, the second magnetic conductive layer 2 is applied and installed on top of the first magnetic conductive layer 3.

[0152] Accordingly, the protrusion structure 104 includes a plurality of concentrically distributed protrusion rings and a second protrusion segment connected between the protrusion rings.

[0153] Example 12

[0154] like Figure 17As shown, in the cooking inner pot provided in this embodiment, the second magnetic conductive layer 2 is a combination of multiple annular magnetic conductive blocks 211 and multiple third magnetic conductive blocks 25. The first magnetic conductive layer 3 includes an inner circular region, a middle annular region, and an outer annular region arranged sequentially from the inside to the outside. The inner circular region is provided with one or more annular magnetic conductive blocks 211, the middle annular region is provided with multiple dot-like spaced third magnetic conductive blocks 25, and the outer annular region is provided with one or more annular magnetic conductive blocks 211. Correspondingly, the protruding structure 104 is a combination of protruding rings and second protruding blocks. Along the direction outward from the center of the inner pot body 1, multiple protruding rings, multiple rings of second protruding blocks, and multiple protruding rings are distributed sequentially, consistent with the shape and distribution of the second magnetic conductive layer 2.

[0155] Example 13

[0156] like Figure 18 As shown, in the cooking inner pot provided in this embodiment, the second magnetic conductive layer 2 is a combination of multiple annular magnetic conductive blocks 211 and multiple third magnetic conductive blocks 25. The first magnetic conductive layer 3 includes an inner circular region and an outer annular region. The inner circular region is provided with multiple third magnetic conductive blocks 25 distributed in a dotted pattern, and the outer annular region is provided with one or more annular magnetic conductive blocks 211. Correspondingly, the protrusion structure 104 includes multiple second protrusions that are directly opposite to the third magnetic conductive blocks 25 and distributed in a dotted pattern, and multiple concentric protrusion rings that are directly opposite to the annular magnetic conductive blocks 211.

[0157] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cooking inner pot, characterized in that, include: The inner pot body (1) has a plurality of first regions (101) at its bottom, and a second region (102) is formed between the plurality of first regions (101); A first magnetically conductive layer (3) is disposed over the second region (102) and a plurality of the first regions (101); A second magnetic conductive layer (2) is disposed over the first magnetic conductive layer (3) and is directly opposite to a plurality of the first regions (101).

2. The cooking inner pot according to claim 1, characterized in that, The inner bottom wall (11) of the inner pot body (1) is provided with a protruding structure (104) that is directly opposite to the first region (101).

3. The cooking inner pot according to claim 2, characterized in that, The second magnetically conductive layer (2) includes at least one magnetically conductive ring (21); the protrusion structure (104) is annular in shape at a position directly opposite to the magnetically conductive ring (21); The magnetic ring (21) is a closed circular magnetic block (211); Alternatively, the magnetic ring (21) includes a plurality of first magnetic blocks (212) and a plurality of first magnetic segments (213), the plurality of first magnetic blocks (212) and the plurality of first magnetic segments (213) being connected alternately in sequence, and the outer contour of the first magnetic block (212) protruding relative to the outer contour of the first magnetic segment (213).

4. The cooking inner pot according to claim 3, characterized in that, Multiple magnetic rings (21) are provided, and the multiple magnetic rings (21) are concentric and spaced apart; The adjacent magnetic rings (21) are not connected to each other; or, the second magnetic layer (2) further includes a second magnetic segment (22), and the adjacent magnetic rings (21) are connected through the second magnetic segment (22).

5. The cooking inner pot according to claim 3, characterized in that, The second magnetic conductive layer (2) further includes a second magnetic conductive block (23) disposed at the center point of the bottom region; the magnetic conductive ring (21) surrounds the second magnetic conductive block (23); The second magnetic block (23) is not connected to the adjacent magnetic ring (21); or, the second magnetic layer (2) further includes a third magnetic segment (24), through which the second magnetic block (23) is connected to the magnetic ring (21).

6. The cooking inner pot according to claim 2, characterized in that, The second magnetic conductive layer (2) includes a plurality of third magnetic conductive blocks (25), which are distributed in a dotted pattern at intervals. The protruding structures (104) are distributed in a dotted pattern and are directly opposite to the plurality of the third magnetic blocks (25).

7. The cooking inner pot according to any one of claims 1-6, characterized in that, The first region (101) is provided with an embedding groove (103), and the first magnetic conductive layer (3) is partially disposed in the embedding groove (103).

8. The cooking inner pot according to any one of claims 1-6, characterized in that, The thickness of the first magnetic conductive layer (3) is 0.2 mm to 0.5 mm; And / or, the thickness of the second magnetic layer (2) is 0.2 mm to 0.5 mm.

9. The cooking inner pot according to any one of claims 1-6, characterized in that, The outer contour of the first magnetic conductive layer (3) is circular.

10. A cooking utensil, characterized in that, It includes a coil and a cooking pot as described in any one of claims 1-9, wherein the coil is disposed at the bottom of the cooking pot.

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