Cookware composite bottom sheet and cookware

Abstract

The utility model provides a pot composite bottom sheet and a pot. The pot composite bottom sheet comprises a sheet-shaped main body, the plurality of rhombic meshes are formed in the sheet-shaped main body, and the rhombic meshes penetrate through the sheet-shaped main body in the thickness direction; and the insert riveting turnups are arranged at the edges of the rhombic meshes. Deformation of the pot bottom in the using process can be reduced, and the service life of the pot is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen utensils, and particularly relates to a pot complex bottom sheet and a pot. BACKGROUND

[0002] An electromagnetic oven has been widely used in daily life due to its convenience. An aluminum product pot cannot be directly used on the electromagnetic oven. Therefore, when the aluminum product pot is used on the electromagnetic oven, a complex bottom sheet capable of conducting magnetism is usually added to the bottom of the aluminum product pot. The complex bottom sheet reacts with the electromagnetic oven to generate heat, so as to achieve the heating purpose. The complex bottom sheet is fixed to the bottom of the pot by cold riveting or the like, which causes a large extrusion stress on the bottom of the pot. In addition, the thermal expansion coefficients of the bottom and the complex bottom sheet are different, which causes the deformation of the bottom and affects the service life of the pot. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a pot complex bottom sheet and a pot, so as to reduce the deformation of the bottom during use and prolong the service life of the pot.

[0004] The first aspect of the present application provides a pot complex bottom sheet, which comprises:

[0005] a sheet-shaped main body;

[0006] a plurality of rhombic mesh holes arranged on the sheet-shaped main body, the rhombic mesh holes penetrating through the sheet-shaped main body along the thickness direction;

[0007] a riveting and flanging edge arranged on the edge of the rhombic mesh hole.

[0008] The pot complex bottom sheet provided by the present application comprises a sheet-shaped main body, a plurality of rhombic mesh holes and a riveting and flanging edge. The rhombic mesh holes are arranged on the sheet-shaped main body, and the rhombic mesh holes penetrate through the sheet-shaped main body along the thickness direction, so that the pot complex bottom sheet has a grid-shaped structure as a whole. The riveting and flanging edge is arranged on the edge of the rhombic mesh hole. When the pot complex bottom sheet is connected to the bottom of the pot body base material, the riveting and flanging edge first contacts the bottom, so as to play a role of pre-positioning the pot complex bottom sheet and prevent the pot complex bottom sheet from being abnormally displaced. After the pot complex bottom sheet is connected to the bottom, the riveting and flanging edge penetrates into the bottom, the pot complex bottom sheet is embedded into the bottom, and part of the material of the bottom is extruded and filled into the rhombic mesh hole, so as to realize the firm connection between the pot complex bottom sheet and the bottom. On the one hand, the rhombic mesh hole can be deformed after being stressed, so that the pot complex bottom sheet has good expansion and deformation capacity. That is to say, the pot complex bottom sheet expands or deforms together with the bottom, so that the extrusion stress between the pot complex bottom sheet and the bottom can be reduced, thereby reducing the deformation of the bottom during use and prolonging the service life of the pot. On the other hand, the rhombic mesh hole can still maintain the rhombic shape after being deformed by stress, so that the rhombic mesh hole has a certain stability, the stability of the overall structure of the pot can be improved, the deformation of the pot can be reduced, and the service life of the pot can be prolonged.

[0009] Optionally, the area ratio of the diamond-shaped mesh to the sheet-like body is 50% to 60%, which can both extend the service life of the pressure cooker and enable the cooker to achieve higher heating efficiency.

[0010] Optionally, the diamond-shaped mesh includes an acute apex angle, the angle of which is in the range of 33° to 37°, so that the bottom sheet of the cookware can maintain a high degree of stretching and deformation, thereby reducing the deformation that may occur at the bottom during use.

[0011] Optionally, the side length of the diamond-shaped mesh is 1mm to 3mm, so that the bottom sheet of the cookware can maintain a high degree of stretching and deformation, thereby reducing the deformation that may occur at the bottom during use.

[0012] Optionally, the spacing between adjacent diamond-shaped meshes is 1mm to 2mm, which can ensure both the structural strength of the cookware bottom sheet and its ability to stretch and deform.

[0013] Optionally, the riveting flange is a burr structure formed by stamping. Diamond-shaped mesh holes are prepared on the sheet-like body by stamping. By rationally designing the structure of the stamping die, the unavoidable burr structure during stamping can meet the size and shape requirements of the riveting flange. This simplifies the processing technology, improves raw material utilization, and thus reduces production costs.

[0014] Optionally, the thickness of the sheet-like body is 0.25mm to 0.75mm, which can ensure both the heating efficiency and the service life of the cookware.

[0015] Optionally, the height of the riveted flange is 0.5mm to 1.0mm to ensure the service life of the cookware.

[0016] A second aspect of this application provides a cookware, comprising: a pot body substrate, including a bottom and a wall; and a bottom sheet, as provided in this application, wherein the bottom sheet is disposed on the outer surface of the bottom, and the riveted flange is embedded in the bottom. On one hand, the diamond-shaped mesh can deform under stress, giving the bottom sheet good extensibility and deformation capacity. That is, the bottom sheet expands or deforms along with the bottom, thus reducing the compressive stress between the bottom sheet and the bottom, thereby reducing deformation of the pot bottom during use and extending the cookware's lifespan. On the other hand, the diamond-shaped mesh retains its diamond shape after deformation under stress, thus possessing a certain degree of stability, increasing the overall structural stability of the cookware, reducing deformation, and extending its lifespan.

[0017] Optionally, the surface of the pot body substrate is coated, and the pot bottom sheet is disposed on the surface of the coating, with the coating exposed through the diamond-shaped mesh. On the one hand, the coating completely covers the surface of the pot body substrate, which simplifies the coating preparation process and improves the uniformity and integrity of the coating; on the other hand, the coating being exposed through the diamond-shaped mesh not only improves the overall consistency of the pot's appearance but also prevents corrosion and other damage to the pot at the diamond-shaped mesh, extending the pot's service life.

[0018] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the cookware provided in the embodiments of this application;

[0020] Figure 2 This is a schematic diagram of the structure of the cookware bottom sheet provided in the embodiments of this application;

[0021] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0022] Figure 4 for Figure 2 A partial sectional view.

[0023] Figure label:

[0024] 10-Cookware bottom sheet;

[0025] 20 - Pot body substrate;

[0026] 200 - Bottom;

[0027] 202 - Wall section;

[0028] 1-flake body;

[0029] 2-Rhombus mesh;

[0030] 3-Riveting and flanging.

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0033] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In the description of this specification, it should be understood that the directional terms such as "upper" and "lower" used in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0035] like Figures 1-4 As shown, this application embodiment provides a cookware bottom sheet 10, which can be connected to a pot body substrate 20 and together with the pot body substrate 20 constitutes a pot body. Specifically, the material of the pot body substrate 20 includes, but is not limited to, aluminum and its alloys, and the material of the cookware bottom sheet 10 includes, but is not limited to, stainless steel and other magnetically conductive materials. The pot body substrate 20 includes a bottom 200 and a wall portion 202, with the wall portion 202 surrounding the bottom 200. The cookware bottom sheet 10 is connected to the bottom 200; the cookware bottom sheet 10 and the bottom 200 of the pot body substrate 20 together constitute the pot bottom, and the wall portion 202 of the pot body substrate 20 constitutes the pot wall. The pot bottom and the pot wall together form a pot body capable of holding food.

[0036] Furthermore, the cookware bottom sheet 10 includes a sheet-like body 1 and a plurality of diamond-shaped mesh holes 2. The shape and size of the sheet-like body 1 should be adapted to the bottom 200 so that the cookware bottom sheet 10 can cover the area of ​​the bottom 200. The diamond-shaped mesh holes 2 are provided on the sheet-like body 1 and penetrate the sheet-like body 1 along the thickness direction, so that the cookware bottom sheet 10 has an overall mesh structure. When the cookware bottom sheet 10 is connected to the bottom 200 of the pot body substrate 20, under pressure, the cookware bottom sheet 10 is embedded in the bottom 200, and a portion of the material of the bottom 200 is squeezed and filled into the diamond-shaped mesh holes 2, thereby realizing the riveting and fixing of the cookware bottom sheet 10 and the bottom 200. On the one hand, the rhombus-shaped mesh 2 can deform under stress, giving the cookware bottom sheet 10 good stretching and deformation capabilities. In other words, the cookware bottom sheet 10 stretches or deforms together with the bottom 200. Therefore, it can reduce the compressive stress between the cookware bottom sheet 10 and the bottom 200, thereby reducing the deformation of the bottom of the pot during use and extending the service life of the cookware. On the other hand, the rhombus-shaped mesh 2 can still maintain its rhombus shape after being deformed under stress. Therefore, it has a certain degree of stability, which can increase the overall structural stability of the cookware, reduce the deformation of the cookware, and extend the service life of the cookware.

[0037] Furthermore, the cookware bottom sheet 10 also includes a riveted flange 3, which is disposed at the edge of the diamond-shaped mesh 2. When the cookware bottom sheet 10 is connected to the bottom 200, the riveted flange 3 first contacts the bottom 200, thereby pre-positioning the cookware bottom sheet 10 and preventing displacement or other abnormalities. Moreover, after the cookware bottom sheet 10 is connected to the bottom 200, the riveted flange 3 penetrates into the bottom 200, thus increasing the adhesion area between the cookware bottom sheet 10 and the bottom 200, ensuring that the cookware bottom sheet 10 forms a firm connection with the bottom 200 for a longer period of time, thereby extending the service life of the cookware.

[0038] Furthermore, the riveting flange 3 is a burr structure formed by stamping. That is to say, the diamond-shaped mesh 2 is prepared on the sheet-like main body 1 by stamping. By reasonably designing the structure of the stamping die, the burr structure that is unavoidable during the stamping process can meet the size and shape requirements of the riveting flange 3. This can simplify the processing technology, improve the utilization rate of raw materials, and thus reduce production costs.

[0039] Furthermore, the thickness of the sheet-like main body 1 is 0.25mm to 0.75mm. For example, the thickness of the sheet-like main body 1 can be 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, or 0.75mm, etc., which can ensure both the heating efficiency and the service life of the cookware. When the thickness of the sheet-like main body 1 is less than 0.25mm, the total power of the cookware bottom plate 10 is relatively small, resulting in lower heating efficiency of the cookware. When the thickness of the sheet-like main body 1 is greater than 0.75mm, the rigidity of the cookware bottom plate 10 is relatively large, which can easily create greater stress between the cookware bottom plate 10 and the bottom 200, thereby causing deformation of the bottom 200.

[0040] Furthermore, the height of the riveted flange 3 is 0.5mm to 1.0mm. For example, the height of the riveted flange 3 can be 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, 0.95mm, or 1.0mm, etc., to ensure the service life of the cookware. When the height of the riveted flange 3 is less than 0.5mm, the depth to which the riveted flange 3 penetrates into the bottom 200 is small, making it difficult to ensure a firm connection between the cookware bottom plate 10 and the bottom 200. During use, the bottom 200 bottom plate is prone to loosening or falling off. When the height of the riveted flange 3 is greater than 1.0mm, the depth to which the riveted flange 3 penetrates into the bottom 200 is large, and the thickness of the bottom 200 corresponding to the position of the riveted flange 3 is too thin, causing the bottom 200 to be easily damaged, affecting the normal use of the cookware.

[0041] Furthermore, the area ratio of the rhomboid mesh 2 to the sheet-like main body 1 is 50% to 60%, for example, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, or 60%, etc. This can extend the service life of the pressure cooker and enable the cooker to achieve higher heating efficiency. When the area ratio of the rhomboid mesh 2 to the sheet-like main body 1 is less than 50%, the area of ​​the rhomboid mesh 2 is too small, and the expansion and contraction capacity of the cooker's bottom sheet 10 is insufficient. During use, the bottom 200 may still undergo significant deformation, and it will also result in a smaller number of riveted flanges 3 or a smaller height of the riveted flanges 3, affecting the firmness of the connection between the cooker's bottom sheet 10 and the bottom 200. When the area ratio of the rhomboid mesh 2 to the sheet-like main body 1 is greater than 60%, the heating area of ​​the cooker's bottom sheet 10 decreases, leading to a reduction in the cooker's heating efficiency.

[0042] Furthermore, the rhomboid mesh 2 includes an acute apex angle α and an obtuse apex angle, which are complementary angles. The acute apex angle α ranges from 33° to 37°, and correspondingly, the obtuse apex angle ranges from 147° to 143°, so that the bottom sheet 10 of the cookware maintains a high capacity for expansion and contraction, thereby reducing the deformation that may occur at the bottom 200 during use. For example, the acute apex angle α can be 33°, 33.5°, 34°, 34.5°, 35°, 35.5°, 36°, 36.5°, or 37°, etc., and the obtuse apex angle can be 147°, 146.5°, 146°, 145.5°, 145°, 144.5°, 144°, 143.5°, or 143°, etc. When the side length L of the rhombus mesh 2 remains constant: if the acute apex angle α is less than 33° and the obtuse apex angle is greater than 147°, the area of ​​the rhombus mesh 2 will be too small, resulting in a poorer ability to stretch and deform the cookware bottom sheet 10; if the acute apex angle α is greater than 37° and the obtuse apex angle is less than 143°, the area of ​​the rhombus mesh 2 will be too large, resulting in a reduction in the total number of rhombus mesh 2. This will not only lead to a poorer ability to stretch and deform the cookware bottom sheet 10, but also a reduction in the number of riveted flanges 3, affecting the firmness of the connection between the cookware bottom sheet 10 and the bottom 200.

[0043] Furthermore, the side length L of the rhombus-shaped mesh 2 is 1mm to 3mm, for example, the side length L of the rhombus-shaped mesh 2 is 1mm, 1.2mm, 1.5mm, 1.8mm, 2mm, 2.2mm, 2.5mm, 2.8mm or 3mm, etc., so that the cookware bottom sheet 10 maintains a high capacity for expansion and contraction, thereby reducing the deformation that may occur at the bottom 200 during use. When the side length L of the rhombus-shaped mesh 2 is less than 1mm, the area of ​​the rhombus-shaped mesh 2 is too small, resulting in a poorer capacity for expansion and contraction of the cookware bottom sheet 10; when the side length L of the rhombus-shaped mesh 2 is greater than 3mm, the area of ​​the rhombus-shaped mesh 2 is too large, resulting in a reduction in the total number of rhombus-shaped mesh 2, which not only leads to a poorer capacity for expansion and contraction of the cookware bottom sheet 10, but also leads to a reduction in the number of riveted flanges 3, affecting the firmness of the connection between the cookware bottom sheet 10 and the bottom 200.

[0044] Furthermore, the spacing W between adjacent rhomboid mesh holes 2 is 1mm to 2mm. For example, the spacing W between adjacent rhomboid mesh holes 2 can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, or 2mm, etc. This ensures both the structural strength of the cookware bottom sheet 10 and its ability to expand and contract. When the spacing W between adjacent rhomboid mesh holes 2 is less than 1mm, the heating element of the cookware bottom sheet 10 is too thin, making it prone to breakage and other damage between adjacent rhomboid mesh holes 2. When the spacing W between adjacent rhomboid mesh holes 2 is greater than 2mm, the heating element of the cookware bottom sheet 10 is too wide, resulting in a reduction in the number or area of ​​the rhomboid mesh holes 2, thus worsening the expansion and contraction ability of the cookware bottom sheet 10.

[0045] In addition, this application embodiment also provides a cookware, which includes a pot body substrate 20 and any of the cookware bottom plates 10 provided in this application embodiment. The pot body substrate 20 includes a bottom 200 and a wall portion 202, and the cookware bottom plate 10 is disposed on the outer surface of the bottom 200, with a riveted flange 3 embedded in the bottom 200. Both the pot body substrate 20 and the cookware bottom plate 10 are circular, and the area of ​​the pot body substrate 20 is 2000 cm². 2 ~2500cm 2 The area of ​​the composite film is 150cm². 2 ~300cm 2 .

[0046] Furthermore, the surface (including the inner and outer surfaces) of the pot body substrate 20 is coated, and the pot bottom sheet 10 is disposed on the surface of the coating, with the coating exposed through the diamond-shaped mesh 2. On the one hand, the coating completely covers the surface of the pot body substrate 20, which simplifies the coating preparation process and improves the uniformity and integrity of the coating; on the other hand, the coating being exposed through the diamond-shaped mesh 2 not only improves the overall consistency of the pot's appearance but also prevents corrosion and other damage to the pot at the diamond-shaped mesh 2, extending the pot's service life.

[0047] Specifically, the coating includes, but is not limited to, high-toughness fluorine coatings, silicone-modified resins, or high thermal conductivity graphene coatings (mainly composed of fluorine resins or silicone-modified resins with added graphene). The coating thickness is 25μm to 50μm to ensure that the coating has durable non-stick properties, corrosion resistance, and high thermal conductivity; when the coating thickness is less than 25μm, the coating's wear resistance and corrosion resistance are poor; when the coating thickness is greater than 50μm, the coating's hardness and adhesion are poor.

[0048] The cookware provided in this application embodiment can be prepared according to the following steps: preparing a pot body substrate 20, the pot body substrate 20 having a circular sheet structure, the pot body substrate 20 including a bottom 200 and a wall portion 202; preparing a coating on the surface of the pot body substrate 20; connecting the cookware bottom sheet 10 to the coated pot body substrate 20; and drawing the pot body substrate 20 and the cookware bottom sheet 10 together to form a pot body.

[0049] To illustrate the superior performance of the cookware bottom sheet described in the embodiments of this application, the cookware bottom sheet provided in the embodiments of this application (denoted as diamond grid bottom sheet) and the existing cookware bottom sheet (denoted as ordinary bottom sheet) are respectively connected to the pot body substrate to form sample cookware, and bottom deformation test and heating efficiency test are performed on the cookware sample.

[0050] The bottom deformation test and heating efficiency test are based on the principles of high-frequency induction, eddy currents, and structural mechanics. The bottom deformation test simulates the deformation of the pot bottom after a period of use, while the heating efficiency test simulates the heating time required during daily use. Except for the bottom sheet, all other parameters (e.g., shape, size, material, thickness, and processing technology of the pot body substrate) of the sample cookware are identical, and all other experimental conditions are also identical. Each sample number represents a group of sample cookware, and its experimental results are the average of the experimental results for that group of sample cookware.

[0051] The specific experimental methods and results are as follows: First, the new sample cookware was subjected to a heating efficiency experiment, and the results are shown in Tables 1 and 2; then, the sample cookware was subjected to a bottom deformation experiment, and the results are shown in Table 3; finally, the sample cookware after the deformation experiment was subjected to a heating efficiency experiment again, and the results are shown in Tables 4 and 5.

[0052] Table 1

[0053]

[0054] Table 2

[0055]

[0056] Table 3

[0057]

[0058]

[0059] Table 4

[0060]

[0061] Table 5

[0062]

[0063] As can be seen from the data in Tables 1 and 2, in the initial state, the rhomboid mesh multi-layered bottom pan provided in this application embodiment has lower heating efficiency than the existing ordinary multi-layered bottom pan. This is because the heating area of ​​the rhomboid mesh multi-layered bottom pan is smaller (the area ratio of the rhomboid mesh holes to the sheet-like body is 50%–60%), while the heating area of ​​the ordinary multi-layered bottom pan is larger (the area ratio of the ordinary mesh holes to the sheet-like body is approximately 70%). As can be seen from the data in Table 3, after a period of use, the rhomboid mesh multi-layered bottom pan provided in this application embodiment exhibits less bottom deformation and a longer service life than the existing ordinary multi-layered bottom pan.

[0064] A comparison of Tables 1 and 4, and Tables 2 and 5, shows that after a period of use, the heating efficiency of both the rhomboid mesh multi-layered pot provided in this embodiment and the existing ordinary multi-layered pot decreases. However, the decrease in heating efficiency of the rhomboid mesh multi-layered pot provided in this embodiment is smaller, while the decrease in heating efficiency of the existing ordinary multi-layered pot is larger. Furthermore, the data in Tables 4 and 5 indicate that after a period of use, the rhomboid mesh multi-layered pot provided in this embodiment has better heating efficiency than the existing ordinary multi-layered pot. Therefore, the rhomboid mesh multi-layered pot provided in this embodiment can maintain high heating efficiency for a longer period and has a longer service life.

[0065] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cookware bottom sheet, characterized in that, include: sheet body(1); Multiple diamond-shaped mesh holes (2) are disposed on the sheet-like body (1), and the diamond-shaped mesh holes (2) penetrate the sheet-like body (1) along the thickness direction; The riveted flange (3) is set at the edge of the diamond mesh (2).

2. The cookware bottom sheet according to claim 1, characterized in that, The area ratio of the diamond-shaped mesh (2) to the sheet-like main body (1) is 50% to 60%.

3. The cookware bottom sheet according to claim 1, characterized in that, The rhomboid mesh (2) includes an acute apex angle, the angle of which is in the range of 33° to 37°.

4. The cookware bottom sheet according to claim 1, characterized in that, The side length of the rhomboid mesh (2) is 1mm to 3mm.

5. The cookware bottom sheet according to claim 1, characterized in that, The spacing between adjacent diamond-shaped meshes (2) is 1mm to 2mm.

6. The cookware bottom sheet according to any one of claims 1-5, characterized in that, The riveted flange (3) is a burr structure formed by stamping.

7. The cookware bottom sheet according to any one of claims 1-5, characterized in that, The thickness of the sheet-like main body (1) is 0.25 mm to 0.75 mm.

8. The cookware bottom sheet according to any one of claims 1-5, characterized in that, The height of the riveted flange (3) is 0.5mm to 1.0mm.

9. A cookware, characterized in that, include: The pot body substrate includes the bottom and the walls; The cookware bottom sheet according to any one of claims 1-8, wherein the cookware bottom sheet is disposed on the outer surface of the bottom, and the riveted flange (3) is embedded in the bottom.

10. The cookware according to claim 9, characterized in that, The surface of the pot body substrate is provided with a coating, and the pot bottom sheet is disposed on the surface of the coating, with the coating exposed through the diamond mesh (2).

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