Pot container and cooking utensil

Abstract

The utility model discloses a pot inner container and a cooking utensil, the pot inner container comprises a pot base body and at least one local function body, and the pot base body forms a pot body with a containing cavity; the at least one local function body is connected to the pot base body from the outer side of the pot base body, one part of the at least one local function body extends in the lowest area of the pot container, and every two adjacent local function bodies or the adjacent part of a single local function body are arranged in a spaced mode in at least one of the radial direction, the circumferential direction and the height direction of the pot body; a local temperature difference area is formed on the inner surface of the pot container; a friction part protruding downwards is formed in the lowest area of the pot base body or the local functional body. When the pot container is heated, an obvious temperature gradient can be generated on the inner surface of the pot container, and heat convection in the pot becomes fast and violent by utilizing the temperature gradient, so that liquid and food materials in the pot are boiled and turned over more sufficiently, and the food materials are heated more uniformly; the bottom of the pot container has a wear-resistant function, and large-area outer coating falling or irregular friction marks cannot be caused.

Description

Technical Field

[0001] This application relates to the technical field of kitchen appliances, and more specifically to a pot inner pot and a cooking utensil. Background Technology

[0002] Existing cooking appliances such as regular rice cookers, electric stoves, IH rice cookers, and induction cookers are generally equipped with a heatable inner pot. These inner pots are typically composed of single, double, or multi-layered substrates, sometimes with a coating on the surface. However, regardless of the substrate or coating, the thickness of each layer is essentially the same throughout the inner pot. This results in a generally uniform thickness of the inner pot, leading to a smooth inner and outer surface and even heat conduction. When the inner pot is heated, the uniform heat transfer and temperature distribution within the same height area on the inner surface result in slow convection flow, limited convection areas, insufficient boiling and tumbling of food, and inconsistent cooking results. Furthermore, to make the bottom more durable and aesthetically pleasing during handling, the bottom of the inner pot is typically designed with raised sections. However, when the outer components are laminated to the substrate, it is difficult to form wear-resistant raised sections on the outer components. Using welded ribs after molding increases costs and affects aesthetics.

[0003] Therefore, a pot inner liner and cooking utensil are needed to at least partially solve the above problems. Utility Model Content

[0004] The description of this utility model introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, this utility model provides a pot inner liner for cooking utensils, the pot inner liner comprising:

[0006] A pot base, the pot base constituting a pot body having a receiving cavity; and

[0007] At least one local functional body is attached to the pot base from the outside of the pot base, and a portion of the at least one local functional body extends into the lowest region of the pot liner.

[0008] Wherein, two adjacent local functional bodies or adjacent portions of a single local functional body are arranged at least one of the radial, circumferential and height directions of the pot body to form a local temperature difference region on the inner surface of the pot liner; and the pot base or the local functional body has a downwardly protruding friction part formed in the lowest region.

[0009] According to this design, the inner surface of the pot's inner surface can have a first temperature zone corresponding to the local functional components and a second temperature zone corresponding to a portion of the pot base at the intervals between the local functional components. When the pot's inner surface is heated, due to the adjustment of heat distribution by the local functional components, there is a significant temperature difference between the first and second temperature zones of the pot's inner surface, thus forming a local temperature difference region between the two areas, which can generate a significant temperature gradient. This temperature gradient promotes faster and more intense heat convection within the pot, resulting in more thorough boiling and churning of the liquid and ingredients, more even heating of the ingredients, and better consistency in the cooking results.

[0010] Furthermore, the local functional body is located on the outside of the pot base. The outer surfaces of the pot base and the local functional body constitute the outer surface of the inner pot. The downwardly protruding friction part has the lowest point of the inner pot. When the inner pot is picked up or put down, the friction part contacts the placement surface and is rubbed. The area outside the friction part does not contact the placement surface. As a result, the bottom of the inner pot has wear resistance and will not cause large-area outer coating peeling or irregular friction marks, and will not affect the aesthetics of the inner pot, thus improving the user experience.

[0011] Optionally, the at least one local functional body includes a plurality of first local functional bodies and a second local functional body located at the center of the bottom of the pot body. The plurality of first local functional bodies are arranged in a circumferential array along the pot body and are all connected to the second local functional body. The friction part is provided on the second local functional body or the portion of the pot base connected to the second local functional body. According to this solution, the plurality of first local functional bodies enable the pot liner to form a plurality of local temperature difference regions arranged in the circumferential direction; the second local functional body connects the plurality of first local functional bodies to form an integral component, which is convenient for integral bonding to the pot base; the second local functional body extends in the lowest region of the pot liner, and the friction part provides wear resistance to the outer surface of the second local functional body and the portion of the pot base connected to it.

[0012] Optionally, the friction parts are arranged at intervals along the circumference, or the friction parts are constructed into an annular shape extending circumferentially. According to this solution, in the interval arrangement scheme, less material is used for the friction parts, which can save material costs and provides greater design freedom in terms of structure; in the annular shape scheme, the friction parts are easier to form, easier to manufacture, and the pot liner has better stability.

[0013] Optionally, the local functional body has a bottom end face extending in the lowest region and an outer arc surface extending upward from the bottom end face. The bottom end face is a sloping surface or a slightly arc-shaped surface extending upward in a radially inward direction. The friction part is formed at the transition portion where the bottom end face and the outer arc surface of the local functional body connect. According to this solution, the friction part is formed on the local functional body and is far from the centerline of the pot body. The area of ​​the friction part in the lowest region can be designed to be larger, resulting in better stability of the pot body.

[0014] Optionally, the radial dimension L11 of the transition section is 0.5mm≤L11≤20mm. According to this solution, the radial dimension of the transition section is moderate and not limited by the arc shape of the pot body itself, which facilitates the forming of the transition section during the manufacturing process; it also ensures better stability of the pot liner, avoids multiple uneven scratches on the transition section, affecting the appearance, and facilitates production and manufacturing.

[0015] When the bottom surface of the functional body is inclined, the angle α between it and the horizontal plane is 0 < α ≤ 10°. According to this solution, the inclination angle of the inclined surface is moderate, which can avoid causing large deformation to the pot base, thereby avoiding obvious bulges on the inner surface of the pot base. When scooping food, there is no risk of the coating peeling off at the bulges due to excessive friction with the spoon; and it can also ensure that the radial dimension of the transition part is not too large, avoiding multiple uneven scratches at the transition part, which would affect the appearance.

[0016] The radial dimension L12 of the bottom end face of the functional body is L12≥3mm. According to this scheme, the force-bearing area of ​​the local functional body at the inclined surface is sufficient, which can ensure that the bottom end of the local functional body is pressed in place and avoids the formation of gaps.

[0017] Optionally, the pot base is provided with at least one friction post, and the partial functional body is provided with at least one through hole. The friction post protrudes downward through the through hole to form the friction part. According to this solution, the friction part is formed on the pot base and has the lowest point of the pot liner. The outer surface of the partial functional body is flat, resulting in a good appearance and facilitating the production of the pot liner by pressing.

[0018] Optionally, the partial functional body has a central through hole located at the center of the partial functional body, and the friction post is located at the bottom center of the pot base and passes through the central through hole. According to this solution, the friction post is located at the central through hole of the partial functional body, close to the centerline of the pot body, and the friction post restricts the position of the partial functional body to prevent it from falling off the pot body.

[0019] Optionally, the radial dimension L21 of the friction column is 1mm ≤ L21 ≤ 10mm. When there is only one friction column, it is constructed into a ring shape extending circumferentially. According to this design, the stability of the pot liner can be better ensured, the friction column has good structural strength, is not easily deformed under stress, and is easy to manufacture.

[0020] Optionally, the pot base is provided with multiple friction columns, which are arranged at circumferential intervals. The local functional body is provided with multiple through holes corresponding to the friction columns, and the friction columns pass through the corresponding through holes. According to this solution, the friction columns are located at the through holes at different positions of the local functional body, which can be far away from the center line of the pot body. The area of ​​the friction columns in the lowest region can be designed to be larger, resulting in better stability of the pot body. The friction columns restrict the position of the local functional body, preventing it from falling off the pot body.

[0021] Optionally, the radial dimension L31 of the through hole is L31≥1mm. The circumferential dimension L32 of the through hole is L32≥1mm. According to this solution, the size of the through hole ensures that the pot base can be easily extruded from the through hole, avoiding extrusion failure due to insufficient size.

[0022] The local functional unit includes an annular region for arranging the plurality of through holes. The area of ​​the annular region is S1, and the projected area of ​​the friction column in the annular region is S2, where 1 / 10 ≤ S2 / S1 ≤ 4 / 5. According to this scheme, the friction column has a moderate area ratio in the annular region, which can ensure better stability of the pot liner.

[0023] Optionally, the dimension L of the friction column protruding from the bottom end face of the pot base is 0.2mm ≤ L ≤ 3mm. According to this design, the pot liner can be prevented from rubbing against parts other than the friction column during placement, and scratches to users due to excessive height can be avoided. Furthermore, it facilitates the manufacturing of the pot liner through pressing and laminating the bottom. When there are multiple friction columns, they can be constructed into circumferentially extending arc shapes, circular shapes, triangular shapes, or polygonal shapes. According to this design, the friction columns offer high design freedom, a simple design structure, and are easy to manufacture.

[0024] Optionally, the width of each of the first local functional bodies in the circumferential direction gradually increases from the radial direction outward and / or the height direction upward of the pot body. According to this solution, multiple local functional bodies, including fan-shaped and similar patterns, can be formed on the pot body. Compared to other shapes such as rings, circles, and polygons, the local functional bodies with gradually widening patterns have the structural characteristic of being narrower closer to the bottom center of the pot body and wider further away from the bottom center. This allows the local functional bodies to cover a larger area of ​​the pot body, at least at the bottom, and provides a larger adjustment area for the heat distribution of the pot body. Consequently, the coverage area of ​​the local temperature difference region is larger, achieving a large-scale non-uniform heating and boiling effect.

[0025] The second partial functional unit is constructed in a ring or circular shape. According to this solution, the partial functional unit is easier to manufacture, and the overall appearance of the product is simpler and more aesthetically pleasing, with a better visual effect.

[0026] Optionally, the partial functional body is embedded into the pot base from its outer surface by pressing, simultaneously forming the friction part. According to this solution, the partial functional body can be firmly and reliably embedded into the pot base, making it less prone to detachment, while also facilitating the formation of the friction part when pressure is applied to the partial functional body, thus simplifying manufacturing.

[0027] The outer surface of the pot body and the outer surface of the partial functional unit are generally flat. According to this solution, the partial functional unit is completely embedded in the interior of the pot body, making the structure more robust and reliable. The partial functional unit is not easily detached from the pot body, and the overall appearance of the product is simpler and more aesthetically pleasing, with a better visual effect.

[0028] The local functional body is a heat-concentrating body, a heat-insulating body, a magnetizing body, or a magnetic shield. According to this scheme, the local functional body can adjust the heat distribution to form the local temperature difference region by changing the heat transfer path or changing the distribution of the magnetic field. The heat-concentrating body can concentrate the heat of the pot base, the heat-insulating body can block the heat of the pot base, the magnetizing body can concentrate some of the magnetic field lines to generate a large amount of heat, and the magnetic shield can prevent magnetic field lines from passing through to avoid generating heat.

[0029] According to another aspect of this application, a cooking appliance is provided, the cooking appliance including a heating device and a pot as described in any of the above aspects, the heating device being used to heat the pot.

[0030] According to this solution, when the inner pot is heated, the inner pot with localized functional components can generate a significant temperature gradient on its inner surface. The temperature gradient promotes faster and more intense heat convection inside the pot, resulting in more thorough boiling and churning of the liquid and ingredients, more even heating of the ingredients, and better consistency in the cooking effect of the food.

[0031] Optionally, the heating device includes a bottom heating device located at the bottom of the pot and / or a side heating device located on the side of the pot, wherein the partial functional parts of the pot are arranged in the projection area of ​​the bottom heating device and / or the side heating device on the pot.

[0032] According to this solution, the hot zone or magnetic field generated by the bottom heating device and / or the side heating device can completely cover the area with local functional body, so that the pot liner generates heat convection within the area covered by the hot zone or magnetic field, resulting in high heating efficiency and good uneven heating and boiling effect. Attached Figure Description

[0033] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention.

[0034] In the attached image:

[0035] Figure 1 This is a cross-sectional view of the inner pot according to the first embodiment of this application;

[0036] Figure 2 for Figure 1 A partial cross-sectional view of the inner pot;

[0037] Figure 3 for Figure 1 A 3D view of the inner pot in an inverted position;

[0038] Figure 4 for Figure 3 A partial cross-sectional view of part A in the middle;

[0039] Figure 5 This is a perspective view of a partial functional body in its non-composite state according to this application;

[0040] Figure 6 This is a cross-sectional view of the inner pot according to the second embodiment of this application;

[0041] Figure 7 for Figure 6 A partial cross-sectional view of the inner pot;

[0042] Figure 8 for Figure 6 A 3D view of the inner pot in an inverted position;

[0043] Figure 9 This is a cross-sectional view of the inner pot according to the second embodiment of this application;

[0044] Figure 10 for Figure 9 A partial cross-sectional view of the inner pot;

[0045] Figure 11 for Figure 9 A 3D view of the inner pot in an inverted position;

[0046] Figure 12 for Figure 9 A three-dimensional view of a local functional unit in its unpressed state;

[0047] Figure 13 for Figure 9 A bottom view of the inner pot;

[0048] Figure 14 for Figure 9 Another bottom view of the inner pot, in which the annular area is schematically shown by shaded lines;

[0049] Figure 15 for Figure 9 A bottom view of a modified example of the inner pot;

[0050] Figure 16 for Figure 9 A bottom view of another variation of the inner pot;

[0051] Figure 17 for Figure 9 A bottom view of another variation of the inner pot.

[0052] Explanation of reference numerals in the attached figures:

[0053] 1 pot inner pot

[0054] 2. Pot body

[0055] 3 Bottom of the pot body

[0056] 4. Side of the pot body

[0057] 5 Friction Section

[0058] 6 through holes

[0059] 10 pot base

[0060] 11 Friction Columns

[0061] 20 Local functional units

[0062] 21 First Local Functional Entity

[0063] 22 Second Local Functional Components

[0064] 23 center through hole

[0065] 24 Functional Bottom Surface

[0066] 25 Functional External Curved Surface

[0067] 26 Transition Section

[0068] 27 ring-shaped areas Detailed Implementation

[0069] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0070] To fully understand this invention, a detailed description will be provided below. Obviously, the implementation of this invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this invention are described in detail below; however, other embodiments may also be possible besides these detailed descriptions.

[0071] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0072] The ordinal numbers such as "first" and "second" used in this invention are merely identifiers and have no other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0073] It should be noted that the terms “up,” “down,” “front,” “back,” “left,” “right,” “inner,” “outer,” and similar expressions used in this article are for illustrative purposes only and are not intended to be restrictive.

[0074] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0075] This utility model provides a cooking appliance, which includes a pot and a heating device for heating the pot. The cooking appliance can be, for example, a regular rice cooker, an electric stove equipped with a pot, a pressure cooker, or other electrically heated cooking appliances, in which case the heating device is an electric heating plate or similar device. Alternatively, the cooking appliance can be, for example, an IH rice cooker, an induction cooker equipped with a pot, an IH pressure cooker, or other electromagnetically heated cooking appliances, in which case the pot includes a magnetically conductive material, and the heating device is an electromagnetic heating coil or similar device. In addition to cooking rice, the cooking appliance can also have various other functions such as cooking porridge.

[0076] For cooking appliances like rice cookers, the cooking vessel consists of a pot body and a lid. The pot body has a cylindrical inner pot storage compartment. The inner pot can be fixed in the inner pot storage compartment, or it can be freely placed into or removed from the inner pot storage compartment for easy cleaning. The inner pot is usually made of metal and has a circular opening on its upper surface for holding the food to be heated, such as rice or soup. The pot body includes an electromagnetic heating device, such as an electromagnetic coil, for heating the inner pot.

[0077] The lid has a shape that substantially corresponds to the pot body. The lid is cladably mounted on the pot body; specifically, it is pivotally connected to the pot body via a pivot axis and can freely pivot between a closed and open position relative to the pot body about the pivot axis, facilitating the closing and opening of the pot body. When the lid is closed on the pot body, it covers the inner pot, forming a cooking space between them. The lid typically also has a sealing ring, which can be made of, for example, rubber, and is positioned between the lid and the inner pot to seal the cooking space when the lid is closed.

[0078] For cooking appliances such as electric stoves or induction cookers, the inner pot is independent of the electric stove or induction cooker, and the inner pot can be placed on the upper surface of the electric stove or induction cooker during use.

[0079] First Implementation Method

[0080] like Figures 1 to 5 As shown, this application provides a pot liner 1 with better heat convection. The pot liner 1 mainly includes at least one pot base 10 and at least one local functional body 20. The at least one pot base 10 constitutes a pot body 2 with a receiving cavity. The at least one local functional body 20 is connected to the at least one pot base 10 from the outside of the at least one pot base 10. When there is one pot base 10, the at least one local functional body 20 is connected to the pot base 10 from the outer surface of the pot base 10; when there are two or more pot bases 10, the at least one local functional body 20 is connected to the outermost pot base 10 from the outer surface of the outermost pot base 10. The pot liner 1 of this solution has a multi-layered pot body such as a double-layered pot body or a triple-layered pot body, and the local functional body 20 is located on the outside of the pot body 2.

[0081] Local functional elements 20 are used to adjust the heat distribution of the inner pot 1. The material of the pot base 10 is different from that of the local functional elements 20, resulting in differences between the pot base 10 and the local functional elements 20 in, for example, thermal conductivity or magnetic conductivity. To improve heat convection within the inner pot 1 during cooking, adjacent local functional elements 20, or adjacent portions of a single local functional element 20, are spaced apart in at least one of the radial, circumferential, and height directions of the pot body 2 to form local temperature difference regions on the inner surface of the inner pot 1. The pot body 2 includes a connected pot body bottom 3 and pot body sides 4. At least the pot body bottom 3 is configured in an arc or spherical shape, thereby the bottom of the pot base 10 is configured in an arc or spherical shape, and the local functional elements 20 are at least provided at the pot body bottom 3. Figure 1 The diagram schematically shows an arc-shaped pot bottom 3 and a partially straight-walled pot side 4. In one example (not shown), the pot bottom 3 and pot side 4 form a spherical shape. In another example (not shown), the pot bottom 3 and pot side 4 form a straight-walled shape.

[0082] When the local functional body 20 is disposed at the bottom of the pot body 2, for the straight-walled bottom of the pot body 3, the local functional body 20 is arranged at least once in the radial and circumferential directions of the pot body 2; for the arc-shaped / spherical bottom of the pot body 3, the local functional body 20 is arranged at intervals in the circumferential direction, or in the radial and height directions, or in the radial, circumferential and height directions of the pot body 2.

[0083] When the local functional body 20 is disposed on the side of the pot body 2, for the straight-walled pot body side 4, the local functional body 20 is arranged at least once in the circumferential and height directions of the pot body 2; for the arc-shaped / spherical pot body side 4, the local functional body 20 is arranged at intervals in the circumferential, radial and height directions, or radial, circumferential and height directions of the pot body 2.

[0084] With this arrangement, the inner surface of the pot liner 1 can have a first temperature zone corresponding to the local functional body 20 and a second temperature zone corresponding to the portion of the pot base 10 at the intervals between the local functional bodies 20. When the pot liner 1 is heated, due to the adjustment of heat distribution by the local functional bodies 20, there is a significant temperature difference between the first and second temperature zones of the pot liner 1, thus forming a local temperature difference region between the two regions, which can generate a significant temperature gradient. Utilizing the temperature gradient, the heat convection inside the pot becomes faster and more intense, resulting in more thorough boiling and churning of the liquid and food inside the pot, more uniform heating of the food, and better consistency in the cooking effect. In addition, when there are local temperature difference regions at multiple locations on the inner surface of the pot liner 1, the food grains such as rice in contact with the inner surface of the pot liner 1 will undergo stress deformation and viscosity changes due to expansion caused by the temperature difference, giving the inner surface of the pot liner 1 non-stick properties, achieving a non-stick coating.

[0085] At least one portion of a local functional body 20 extends in the lowest region of the pot liner 1. The local functional body 20 is located on the outside of the pot base 10, and the outer surfaces of the pot base 10 and the local functional body 20 constitute the outer surface of the pot liner 1. To ensure wear resistance at the bottom during handling, the pot base 10 or the local functional body 20 has a downwardly protruding friction portion 5 formed in the lowest region. The downwardly protruding friction portion 5 has the lowest point of the pot liner 1. When the pot liner 1 is handled, the friction portion 5 contacts the placement surface and is rubbed. Areas outside the friction portion 5 do not contact the placement surface. Thus, the bottom of the pot liner 1 has wear resistance, preventing large-area outer coating peeling or irregular friction marks, and does not affect the aesthetics of the pot liner 1, thereby improving the user experience.

[0086] The local functional body 20 can be a heat-concentrating body, a heat-insulating body, a magnetizing body, or a magnetic shield. When the local functional body 20 is a heat-concentrating body or a heat-insulating body, it can adjust the heat distribution to form a local temperature difference region by changing the heat transfer path. The heat-concentrating body can concentrate the heat of the pot base 10, while the heat-insulating body can block the heat from the pot base 10. When the local functional body 20 is a magnetizing body or a magnetic shield, it can adjust the heat distribution to form a local temperature difference region by changing the magnetic field distribution. The magnetizing body can concentrate some of the magnetic field lines to generate a large amount of heat, while the magnetic shield can prevent magnetic field lines from passing through to avoid generating heat.

[0087] The pot base 10 is a heat conductor and / or a magnetic conductor. When there is only one pot base 10, one example is that the pot base 10 is a magnetic conductor, and the local functional body 20 is a magnetizing body or a magnetic shield. The pot base 10 can generate heat through electromagnetic heating, and the local functional body 20 can generate a large amount of heat or not generate heat, suitable for electromagnetic heating cooking appliances. Another example is that the pot base 10 is a heat conductor, and the local functional body 20 is a heat-concentrating body or a heat-insulating body. The pot base 10 can absorb heat from the heating device, and the local functional body 20 can concentrate heat or block heat, suitable for electric heating cooking appliances. In this other example, alternatively, the local functional body 20 is a magnetizing body to generate a large amount of heat through electromagnetic heating.

[0088] In the above examples, where the local functional body 20 is a heat-concentrating body or a magnetic concentrator, the inner surface temperature of the region corresponding to the local functional body 20 in the pot liner 1 is relatively high; more specifically, the first temperature region is a high-temperature region, and the second temperature region is a low-temperature region. In the examples where the local functional body 20 is a heat-insulating body or a magnetic shielding body, the inner surface temperature of the region corresponding to the local functional body 20 in the pot liner 1 is relatively high; more specifically, the first temperature region is a low-temperature region, and the second temperature region is a high-temperature region.

[0089] In some embodiments, the pot base 10 is made of a thermally conductive metal material; or a magnetically conductive metal material. Alternatively, the pot base 10 is made of a non-metallic material. The pot base 10, which forms the inner surface of the pot body 2, can be made of a non-stick metal material to give the inner surface of the inner pot 1 a non-stick function, achieving coating-free non-stick; the pot base 10 is used to generate heat or absorb heat from the heating device by electromagnetic heating; and the inner pot 1 has better heat storage and insulation performance. If needed and / or desired, the inner and / or outer surfaces of the pot body 2 can also be coated, for example, with a protective coating.

[0090] When the local functional body 20 is a magnet, the material of the magnet can be a known material such as rare earth material or amorphous material. When the local functional body 20 is a magnetic shield, the material of the magnetic shield can be a known material such as aluminum powder or ceramic. When the local functional body 20 is a heat collector, the material of the heat collector can be a known material such as aluminum, copper, carbon, or graphite. When the local functional body 20 is a heat insulator, the material of the heat insulator can be a known material such as PTFE (polytetrafluoroethylene), PFA (polyfluoroalkoxy), or ceramic.

[0091] The shape of the local functional elements 20 can be arranged as needed: one example is that the local functional elements 20 are arranged in a ring, specifically in a ring along the circumference of the pot body 2, and in a concentric ring array along the radial direction of the pot body 2 and / or in rows along the height direction of the inner pot 1. Another example is that the local functional elements 20 are arranged in a spiral shape, specifically spiraling outwards radially from the center of the bottom of the pot body 2 and spiraling upwards gradually along the height direction.

[0092] like Figure 3 and Figure 5 As shown, the local functional body 20 forms multiple first local functional bodies 21, which are arranged in a circumferential array along the pot body 2. The multiple first local functional bodies 21 enable the pot liner 1 to form multiple local temperature difference regions arranged in the circumferential direction. The shape of the first local functional body 21 can be circular, elliptical, etc. Figure 14The shape of the local functional body 20 is shown as a fan-shaped or similar pattern. Specifically, the width of each first local functional body 21 in the circumferential direction gradually increases from the radial direction outward and / or the height direction upward of the pot body 2 to form a gradually widening pattern. Compared with other shapes such as rings, circles, and polygons, the gradually widening local functional body 20 has the structural characteristic of being narrower closer to the bottom center of the pot 1 and wider further away from the bottom center of the pot 1. This allows the local functional body 20 to cover more of the pot 1 area at least at the bottom, and the local functional body 20 has a larger adjustment area for the heat distribution of the pot 1, thus covering a larger area of ​​local temperature difference regions and achieving a large-scale non-uniform heating and boiling effect. Furthermore, when the local functional body 20 forms the inner or outer surface of the pot body 2, the appearance of the product can be shaped based on the gradually widening pattern, making the overall appearance simpler, more beautiful, and with a better visual effect.

[0093] At least one partial functional body 20 includes a ring-shaped or circular second partial functional body 22. The second partial functional body 22 is located at the bottom center of the pot body 2, and the narrow ends of multiple first partial functional bodies 21 are connected to the second partial functional body 22. The second partial functional body 22 connects multiple first partial functional bodies 21 to form an integral component, facilitating integral bonding to the pot base 10. Multiple first partial functional bodies 21 can be positioned based on the second partial functional body 22, making it easy for the partial functional body 20 to be formed on the pot body 2; and the overall appearance of the product is simpler and more aesthetically pleasing, with a better visual effect. The second partial functional body 22 extends in the lowest region of the inner pot 1, and a friction part 5 is provided on the second partial functional body 22 or the portion of the pot base 10 connected to the second partial functional body 22. The friction part 5 provides wear resistance to the outer surface of the second partial functional body 22 and the portion of the pot base 10 connected to it.

[0094] In the illustrated example, the second local functional body 22 is provided with a central through hole 23, making it annular in shape. The temperature measuring device can contact the pot base 10 through the central through hole 23, avoiding the influence of the local functional body 20 with higher or lower temperatures on the temperature measuring accuracy of the temperature measuring device, so that the temperature detected by the temperature measuring device more accurately reflects the average temperature of the pot liner 1 at the bottom, making the temperature measurement more accurate.

[0095] The local functional body 20 is embedded into the pot base 10 from its outer surface by pressing, simultaneously forming a friction part 5. The local functional body 20 is firmly and reliably embedded in the pot base 10, preventing it from easily falling off, and also facilitates the formation of the friction part 5 when pressure is applied to the local functional body 20, thus simplifying manufacturing. Before lamination, the local functional body 20 is a flat plate. When force is applied to its lower surface, the local functional body 20 deforms during the pressing process of the pot base 10, ultimately embedding itself into the pot base 10.

[0096] like Figure 2 and Figure 4 As shown, the local functional body 20 has a functional body bottom end face 24 extending in the lowest region and a functional body outer arc surface 25 extending upward from the functional body bottom end face 24. The region where the functional body bottom end face 24 and the functional body outer arc surface 25 connect has a bend, which is located in the lowest region of the pot body 2 at a position far from the centerline of the pot body 2. The bend is on the second local functional body 22. The functional body bottom end face 24 is a slope or slightly arc surface extending upward in a radially inward direction, such that the portion of the functional body bottom end face 24 near the functional body outer arc surface 25 is lower than the rest of the functional body bottom end face 24. The transition portion 26 where the functional body bottom end face 24 and the functional body outer arc surface 25 connect in the local functional body 20 is located low, thus forming a friction portion 5. The transition portion 26 is on the second local functional body 22. In this design, the friction portion 5 is formed on the local functional body 20 and is far from the centerline of the pot body 2. The area of ​​the friction portion 5 in the lowest region can be designed to be larger, resulting in better stability of the pot body 1.

[0097] During processing, the radial dimension of the transition section 26 is limited by the arc shape of the pot body 2 itself, and it cannot be too large or too small, as this would make manufacturing difficult. For example, the radial dimension L11 of the transition section 26 is 0.5mm ≤ L11 ≤ 20mm, such as 0.5mm, 1mm, 5mm, 10mm, 15mm, 20mm, etc., preferably 5mm. Therefore, the radial dimension of the transition section 26 is moderate, not limited by the arc shape of the pot body 2 itself, such as the curvature or radius of curvature, facilitating its shaping during processing; it also ensures better stability of the inner pot 1, avoiding uneven scratches on the transition section 26, which would affect aesthetics and facilitate manufacturing.

[0098] To form the transition section 26, when the bottom surface 24 of the functional body is inclined, the angle α between it and the horizontal plane is 0 < α ≤ 10°, such as 1°, 2°, 4°, 6°, 8°, 10°, etc., preferably 2°. Therefore, the inclination angle of the inclined surface is moderate, which avoids excessive deformation of the pot base 10 due to an excessively large angle, thereby preventing obvious protrusions on the inner surface of the pot base 10. This reduces the risk of coating peeling off from protrusions due to excessive friction with the spoon when scooping food. Furthermore, it avoids the transition section 26 from having an excessively large radial dimension due to an excessively small angle, preventing multiple uneven scratches on the transition section 26 and affecting its appearance.

[0099] To ensure that the inclined area of ​​the local functional body 20 does not break during composite bonding, and to simultaneously provide sufficient pressing area to enhance the bonding force between the inclined surface and the substrate, the radial dimension L12 of the bottom end face 24 of the functional body is set to L12≥3mm, such as 3mm, 5mm, 7mm, 10mm, 12mm, 15mm, etc. Therefore, the force-bearing area of ​​the local functional body 20 at the inclined surface is sufficient, ensuring that the bottom end of the local functional body 20 is properly pressed together and preventing gaps.

[0100] Figure 3 The friction part 5 is shown to be constructed in a ring shape extending circumferentially. The center of the ring-shaped friction part 5 is on the center line of the pot body 2. The friction part 5 is easier to form and manufacture, and the pot liner 1 is placed more stably. Alternatively, the friction parts 5 can be arranged at intervals circumferentially. The friction part 5 uses less material, which can save material costs and allows for greater design freedom in its construction.

[0101] Second Implementation Method

[0102] Figures 5 to 8 The pot liner 1 according to the second embodiment is shown. Except for the friction part 5, the pot liner 1 of this embodiment has a structure that is substantially the same as that of the pot liner 1 of the first embodiment. For the sake of simplicity, the same parts will not be described again.

[0103] The pot base 10 is provided with at least one friction post 11, and the partial functional body 20 is provided with at least one through hole 6. Specifically, the second partial functional body 22 is provided with at least one through hole 6. The friction post 11 protrudes downward through the through hole 6 to form a friction part 5. The friction part 5 is formed on the pot base 10 and has the lowest point of the pot liner 1. The outer surface of the partial functional body 20 is flat, has a good appearance, and is easy to manufacture the pot liner 1 by pressing.

[0104] By utilizing the through-hole 6 of the local functional body 20, the pot base 10 is extruded at the through-hole 6 during the bottoming process to form a friction part 5. The friction part 5 is located at the lowest point of the inner pot 1. During the use of the inner pot 1, wear only occurs at the friction part 5, improving the user experience of the inner pot 1. At the same time, the friction part 5 also plays a role in stabilizing and supporting the inner pot 1, ensuring that the inner pot 1 is not easily tipped over when placed on a table.

[0105] As illustrated, the local functional body 20 has a central through hole 23 located at its center. A friction post 11 is located at the bottom center of the pot base 10 and passes through the central through hole 23. The friction post 11 is positioned at the central through hole 23 of the local functional body 20, close to the centerline of the pot body 2. The friction post 11 restricts the position of the local functional body 20, preventing it from detaching from the pot body 2.

[0106] To improve the stability of the friction part 5 in supporting the cooking utensils, such as Figure 7As shown, the radial dimension L21 of the friction column 11 is 1mm ≤ L21 ≤ 10mm, for example, L21 can be 1mm, 2mm, 3mm, 5mm, 7mm, 10mm, etc. When there is only one friction column 11, the friction column 11 is constructed into a ring shape extending circumferentially. The radial dimension and ring shape of the friction column 11 ensure better stability when the pot liner 1 is placed, the friction column 11 has good structural strength, is not easily deformed under stress, and is easy to manufacture. The dimension L22 of the friction column 11 protruding from the bottom end face of the pot base 10 is 0.2mm ≤ L22 ≤ 3mm, for example, L22 can be 0.2mm, 0.3mm, 0.5mm, 0.7mm, 0.9mm, 1mm, 2mm, 3mm, etc. This can prevent the pot liner 1 from rubbing against parts other than the friction column 11 when placed, and avoid scratching the user due to excessive height, and does not cause difficulties in the manufacturing of the press-fit bottom, making it easy to manufacture the pot liner 1 through press-fit bottom.

[0107] Third Implementation Method

[0108] Figures 9 to 17 The pot liner 1 according to the third embodiment is shown. Except for the friction part 5, the pot liner 1 of this embodiment has a structure that is substantially the same as that of the pot liner 1 of the second embodiment. For the sake of simplicity, the same parts will not be described again.

[0109] like Figures 9 to 11 As shown, the pot base 10 is provided with a plurality of friction columns 11, which are arranged at intervals along the circumference. Figure 12 As shown, the local functional body 20 is provided with multiple through holes 6 corresponding to multiple friction posts 11. The number of friction posts 11 is greater than or equal to 3, and the number of through holes 6 is also greater than or equal to 3, corresponding one-to-one with each friction post 11. The illustration shows three friction posts 11 and three through holes 6. The shape and size of the through holes 6 are adapted to the friction posts 11. Figures 9 to 10 As shown, the friction column 11 passes through the corresponding through hole 6. The friction column 11 is located at different positions of the through hole 6 of the local functional body 20, and can be far away from the center line of the pot body 2. The area of ​​the friction column 11 in the lowest region can be designed to be larger, so that the pot body 1 is placed more stably. The friction column 11 restricts the position of the local functional body 20 and prevents it from falling off the pot body 2.

[0110] In order for the pot base 10 to be extruded from the through hole 6 during extrusion, such as Figure 13 As shown, the radial dimension L31 of the through-hole 6 is L31≥1mm, for example, L31 can be a suitable value such as 1mm, 2mm, 3mm, 5mm, 7mm, or 10mm. The circumferential dimension L32 of the through-hole 6 is L32≥1mm, for example, L32 can be a suitable value such as 1mm, 2mm, 3mm, 5mm, 7mm, or 10mm. The size of the through-hole 6 ensures that the pot base 10 can be easily extruded from the through-hole 6, avoiding extrusion failure due to insufficient size. Figure 10 As shown, the dimension L33 of the friction post 11 protruding from the bottom surface of the pot base 10 is 0.2mm≤L33≤3mm, for example, L33 can be a suitable value such as 0.2mm, 0.3mm, 0.5mm, 0.7mm, 0.9mm, 1mm, 2mm, 3mm, etc. This can prevent the pot liner 1 from rubbing against parts other than the friction post 11 when placed, and avoid scratching the user due to excessive height, and does not cause difficulties in the manufacturing of the press-fit bottom, making it easier to manufacture the pot liner 1 through press-fit bottom.

[0111] like Figure 14 As shown, the local functional body 20 includes an annular region 27 for arranging multiple through holes 6. The area of ​​the annular region 27 is S1, and the projected area of ​​the friction column 11 in the annular region 27 is S2. To improve the stability of the friction part 5 supporting the pot liner 1, the area ratio of the friction column 11 in the annular region 27, S2 / S1, is 1 / 10 ≤ S2 / S1 ≤ 4 / 5. For example, suitable ratios for S2 / S1 include 1 / 10, 1 / 5, 3 / 10, 2 / 5, 1 / 2, 3 / 5, 7 / 10, and 4 / 5. A moderate area ratio of the friction column 11 in the annular region 27 ensures better stability of the pot liner 1.

[0112] like Figure 11 and Figure 12 As shown, the friction post 11 is constructed in an arc shape extending circumferentially, and the through hole 6 corresponds to an arc shape extending circumferentially. Figures 15 to 17 As shown, the friction column 11 can also be constructed into other suitable shapes such as circular, triangular, or polygonal shapes. The friction column 11 has a high degree of design freedom, a simple design structure, and is easy to manufacture.

[0113] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0114] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are only for illustrative purposes. This utility model is not limited to the above embodiments. Many variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A canister for use in a cooking appliance, characterized in that, The pot liner comprises: a pot base body constituting a pot body with a receiving cavity; and at least one partial functional body connected to the pot base body from the outside of the pot base body, a part of the at least one partial functional body extending in a lowest area of the pot liner, wherein two adjacent partial functional bodies or parts of a single partial functional body adjacent to each other are arranged at intervals in at least one of a radial direction, a circumferential direction and a height direction of the pot body to form a local temperature difference area on an inner surface of the pot liner; and the pot base body or the partial functional body has a downward protruding friction portion in the lowest area.

2. The liner according to claim 1, characterized in that The at least one partial functional body comprises a plurality of first partial functional bodies arranged in an array along a circumferential direction of the pot body and connected to a second partial functional body located in a middle part of a bottom of the pot body, and the friction portion is provided on the second partial functional body or a part of the pot base body connected to the second partial functional body.

3. The liner according to claim 1, wherein The friction portion is arranged at intervals along the circumferential direction, or the friction portion is configured in an annular shape extending along the circumferential direction.

4. The liner according to claim 1, wherein The partial functional body has a functional body bottom end surface extending in the lowest area and a functional body outer arc surface extending upward from the functional body bottom end surface, the functional body bottom end surface is an inclined surface or a micro-arc surface extending upward in a direction radially inward, and a transition portion of the partial functional body connecting the functional body bottom end surface and the functional body outer arc surface forms the friction portion.

5. The pot liner according to claim 4, wherein a radial dimension L11 of the transition portion is 0.5mm≤L11≤20mm; and / or an included angle α of the functional body bottom end surface with a horizontal plane is 0<α≤10° when the functional body bottom end surface is an inclined surface; and / or a radial dimension L12 of the functional body bottom end surface is L12≥3mm.

6. The canister according to claim 1, wherein The pot base body is provided with at least one friction column, and the partial functional body is provided with at least one through hole, the friction column protruding downward through the through hole to form the friction portion.

7. The canister according to claim 6, wherein The partial functional body is provided with a central through hole located at the center of the partial functional body, and the friction column is located in a middle part of the bottom of the pot base body and passes through the central through hole.

8. The pot liner according to claim 7, wherein a radial dimension L21 of the friction column is 1mm≤L21≤10mm; and / or when the number of the friction columns is one, the friction column is configured in an annular shape extending along the circumferential direction.

9. The canister according to claim 6, wherein The pot base body is provided with a plurality of friction columns arranged at intervals along the circumferential direction, and the partial functional body is provided with a plurality of through holes corresponding to the plurality of friction columns respectively, and the friction columns pass through the corresponding through holes.

10. The pot liner according to claim 9, wherein a radial dimension L31 of the through hole is L31≥1mm; and / or a circumferential dimension L32 of the through hole is L32≥1mm; and / or The local functional body comprises an annular region for arranging the plurality of through holes, an area of the annular region is S1, a projected area of the friction column on the annular region is S2, 1 / 10≤S2 / S1≤4 / 5.

11. The inner container according to claim 6, wherein, The size L of the friction column protruding from the bottom end surface of the pot body is 0.2mm≤L≤3mm; and / or When the number of the friction columns is multiple, the friction columns are configured in an arc shape, a circular shape, a triangular shape or a polygonal shape in a circumferential direction.

12. The inner container according to claim 2, wherein, The width of each of the first local functional bodies in the circumferential direction gradually increases from the radial direction outward and / or the height direction upward of the pot body; and / or The second local functional body is configured in an annular or circular shape.

13. The inner container according to any one of claims 1 to 12, wherein, The local functional body is embedded in the pot body from the outer surface of the pot body by a press-fit manner and simultaneously forms the friction portion; and / or The outer surface of the pot body and the outer surface of the local functional body are flat as a whole; and / or The local functional body is a heat gathering body, a heat insulation body, a magnetic gathering body or a magnetic shielding body.

14. A cooking appliance characterized by, The cooking appliance comprises a heating device for heating the inner container and the inner container according to any one of claims 1 to 13.

15. The cooking appliance of claim 14, wherein, The heating device comprises a bottom heating device located at the bottom of the inner container and / or a side heating device located at the side of the inner container, and the local functional body of the inner container is arranged in the projected area of the bottom heating device and / or the side heating device on the inner container.

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