Zero-coating inner container
By using an irregular texture design and a zero-coating inner liner with a protective film, the problems of difficult cleaning and high cost of cooking utensil inner liners are solved, achieving non-stick properties and health and safety while reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-04-03
AI Technical Summary
Existing cooking appliance inner pots suffer from problems such as difficulty in cleaning, high cost, and poor non-stick performance, especially the potential health risks and complex process costs associated with coating technology.
The inner liner features an irregular texture design with zero coating. The inner wall is recessed to form a receiving groove, with recessed and protruding parts. The irregular texture area occupies at least half of the inner wall area, and a protective film layer is coated on the surface.
It achieves a non-stick effect, requires no coating material, reduces food adhesion, improves cleaning convenience and aesthetics, and reduces production costs.
Smart Images
Figure CN224070163U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cooking utensil technology, and in particular to a zero-coating inner liner. Background Technology
[0002] In the field of cooking appliances, the inner pot, as the part that comes into direct contact with food, has a crucial impact on cooking results and food adhesion due to its surface treatment technology. Traditional cooking appliance inner pots often employ coating technology, achieving a non-stick effect by applying a non-stick coating to the surface of a metal substrate. However, with consumers' increasing focus on healthy eating and safety, the potential health risks posed by coating materials have attracted widespread attention. Therefore, developing a cooking appliance inner pot that achieves a non-stick effect without coating is particularly important.
[0003] Currently, some so-called "zero-coating" cooking appliances exist on the market, primarily achieving non-stick properties through two technologies. The first technology involves creating micron-level textures on the inner surface of the pot and then using vapor deposition to form a hard protective film on these textures. While this technology achieves good non-stick performance, it has several drawbacks. First, the micron-level textures make it easy for food to embed, leading to difficult cleaning. Second, vapor deposition requires expensive equipment, involves complex processes, and has a low yield rate, thus increasing the overall cost of the cooking appliance.
[0004] Another technique involves directly polishing the surface of the inner pot to a high gloss finish. While this method is inexpensive, the non-stick properties of the inner pot are often unsatisfactory because the base material of the cooking appliance itself is not non-stick. Utility Model Content
[0005] To overcome at least one of the defects described in the prior art, this utility model provides a zero-coating inner pot. It solves problems such as difficult cleaning, high cost, and poor non-stick performance, providing a cooking utensil inner pot that is simple in structure, low in cost, and has excellent non-stick properties.
[0006] The technical solution adopted by this utility model to solve its problem is:
[0007] A zero-coating inner liner includes an inner liner body, the inner liner body including an inner sidewall and an outer sidewall, the inner sidewall being recessed to form a receiving groove for accommodating food, the inner sidewall having an irregular textured area, the irregular textured area occupying at least half of the area of the inner sidewall, the irregular textured area having a recessed portion, the recessed portion having a plurality of protrusions spaced apart, the protrusions being aligned with the surface of the inner sidewall.
[0008] By adopting the above solution, the direct contact area between the food and the inner pot surface is effectively reduced, and the adhesion of the food is reduced, thus achieving a non-stick effect without the need for a coating. At the same time, the irregular texture design increases the aesthetics and practicality of the inner pot.
[0009] Furthermore, the depth H of the recess is 0.2 mm to 0.5 mm.
[0010] By adopting the above solution, it is ensured that the texture is neither too deep, making cleaning difficult, nor too shallow, thus losing the effect of reducing the contact area, thereby optimizing the user experience and cleaning convenience of the inner liner.
[0011] Furthermore, the shape and size of each pair of protrusions are different.
[0012] By adopting the above solution, the irregularity of the inner pot surface is enhanced, making the distribution of food on the inner pot surface more dispersed and further reducing the adhesion of food.
[0013] Furthermore, the inner liner body comprises, from top to bottom, a container opening, a container neck, and a container body. The irregular textured area is located inside the container body, and the area of the irregular textured area is not less than half of the inner area of the container body.
[0014] By adopting the above solution, the main cooking area of the inner pot is guaranteed to have a good non-stick effect, which improves cooking efficiency and quality.
[0015] Furthermore, the area of the irregular textured region is equal to the inner area of the container body.
[0016] By adopting the above solution, the irregular texture of the inner liner surface is maximized, resulting in a good non-stick effect for the entire inner liner.
[0017] Furthermore, the inner diameter of the container neck is smaller than the inner diameter of the container opening, and the outer diameter of the container opening is larger than the outer diameter of the container body.
[0018] By adopting the above solution, the shape design of the inner pot has been optimized, making it more ergonomic and suitable for cooking needs, thus improving ease of use and comfort.
[0019] Furthermore, the edge of the container opening is chamfered.
[0020] By adopting the above solution, the sharpness of the container opening edge is reduced, and the safety of use is improved.
[0021] Furthermore, the container body includes a vertical side plate, a horizontal bottom plate, and a transition curved plate located between the two, and the irregular textured area is continuously arranged on the vertical side plate, the horizontal bottom plate, and the transition curved plate.
[0022] By adopting the above solution, the irregular patterns on the surface of the inner liner are ensured to be continuous in both the vertical and horizontal directions, further enhancing the aesthetics and practicality of the inner liner.
[0023] Furthermore, a protective film layer is provided on the irregular textured area and / or the inner sidewall, and the thickness of the protective film layer is 3μm to 8μm.
[0024] By adopting the above solution, the hardness and rust resistance of the inner liner surface are improved, and the service life of the inner liner is extended.
[0025] Furthermore, the protective film layer is a silicon dioxide film.
[0026] By adopting the above scheme, the silica film has good chemical stability and heat resistance, and can effectively protect the inner liner surface from corrosion and wear.
[0027] In summary, the zero-coating inner liner provided by this utility model has the following technical effects:
[0028] 1. A non-stick effect is achieved through a unique irregular texture design, eliminating the need for any coating materials and thus avoiding potential health risks associated with coatings, meeting consumers' needs for healthy eating and safety;
[0029] 2. The irregular textured area occupies at least half of the inner wall area of the inner pot, and the recessed part is provided with several protrusions at intervals. This design effectively reduces the direct contact area between the food and the surface of the inner pot, reduces the adhesion of the food, makes the food less likely to stick to the pot during cooking, and improves the cooking effect.
[0030] 3. Compared with the zero-coating inner liner that uses micron-level texture and forms a protective film through vapor deposition, the irregular texture design of this zero-coating inner liner is more reasonable, making it less likely for food to get stuck in it, thus reducing the difficulty of cleaning and improving the convenience of use;
[0031] 4. This zero-coating inner liner does not require expensive vapor deposition or other complex surface treatment technologies. The required irregular texture can be formed simply through machining, thereby reducing production costs and improving the product's market competitiveness. Attached Figure Description
[0032] Figure 1 This is a top view structural diagram of the inner liner body according to an embodiment of the present utility model;
[0033] Figure 2 This is a schematic diagram of the side structure of the inner liner body according to an embodiment of the present utility model;
[0034] Figure 3 This is a three-dimensional structural diagram of the inner liner body according to an embodiment of the present utility model;
[0035] Figure 4 for Figure 1 Enlarged view of area A in the middle;
[0036] Figure 5 for Figure 2 Enlarged view of area B in the middle.
[0037] The meanings of the reference numerals in the attached drawings are as follows: 1. Inner liner body; 11. Inner side wall; 12. Outer side wall; 13. Container opening; 14. Container neck; 15. Container body; 151. Straight side plate; 152. Horizontal bottom plate; 153. Transition curved plate; 2. Irregular textured area; 21. Recessed part; 22. Protruding part; 3. Rice grains. Detailed Implementation
[0038] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described and discussed below with reference to the accompanying drawings. Obviously, what is described here is only a part of the examples of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the protection scope of this invention.
[0039] To facilitate understanding of the embodiments of this utility model, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this utility model.
[0040] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0042] See Embodiment 1 of this utility model. Figures 1-5 As shown, a zero-coating inner liner is disclosed, including an inner liner body 1. The inner liner body 1 includes an inner sidewall 11 and an outer sidewall 12. The inner sidewall 11 is recessed to form a receiving groove for accommodating food. Optionally, the material of the inner liner body 1 is preferably a single-layer iron plate. More preferably, the single-layer iron plate is a cold-rolled iron plate or a galvanized iron plate. An irregular textured area 2 is formed on the inner surface of the single-layer iron plate by etching, embossing, rolling, engraving, stamping, etc., and then stretched into the shape of the inner liner, so that the irregular textured area 2 is located on the inner sidewall 11 of the inner liner body 1. Preferably, the irregular textured area 2 occupies at least half of the area of the inner sidewall 11. A recessed portion 21 is provided in the irregular textured area 2. A plurality of protrusions 22 are provided at intervals in the recessed portion 21. The protrusions 22 are aligned with the surface of the inner sidewall 11. It should be noted that the "irregularity" in the irregular texture area 2 specifically refers to the fact that the shape and size of each pair of protrusions 22 within the recess 21 are different, thus forming a random texture. This enhances the irregularity of the inner liner surface, making the distribution of food on the inner liner surface more dispersed and further reducing food adhesion. This design effectively reduces the direct contact area between food and the inner liner surface, reducing food adhesion and achieving a non-stick effect without the need for a coating. At the same time, the irregular texture design increases the aesthetics and practicality of the inner liner.
[0043] Preferably, the depth H of the recess 21 is 0.2mm to 0.5mm, which ensures that the texture is neither too deep to make cleaning difficult, nor too shallow to lose the effect of reducing the contact area, thus optimizing the user experience and cleaning convenience of the inner liner.
[0044] It should be noted that in other embodiments, the material of the inner liner body 1 may also be a multi-layer metal material, but this embodiment does not make a specific limitation.
[0045] Specifically, in this embodiment 1, the inner pot body 1 includes, from top to bottom, a container opening 13, a container neck 14, and a container body 15. The irregular textured area 2 is located inside the container body 15, and the area of the irregular textured area 2 is not less than half of the inner area of the container body 15. Preferably, the area of the irregular textured area 2 occupies two-thirds or all of the inner area of the container body 15. The irregular textured area 2 occupying two-thirds of the area ensures that the main cooking area of the inner pot has a good non-stick effect, improving cooking efficiency and quality. The irregular textured area 2 occupying the entire area makes the area of the irregular textured area 2 equal to the inner area of the container body 15, maximizing the use of the irregular texture on the surface of the inner pot, so that the entire inner pot has a good non-stick effect.
[0046] In this embodiment 1, the inner diameter of the container neck 14 is smaller than the inner diameter of the container opening 13, and the outer diameter of the container opening 13 is larger than the outer diameter of the container body 15. This optimizes the shape design of the inner liner, making it more ergonomic and suitable for cooking, thus improving ease of use and comfort. Preferably, the edge of the container opening 13 is chamfered. This reduces the sharpness of the edge of the container opening 13 and improves safety during use. The container body 15 includes a vertical side plate 151, a horizontal bottom plate 152, and a transition curved plate 153 located between the two. The irregular textured area 2 is continuously arranged on the vertical side plate 151, the horizontal bottom plate 152, and the transition curved plate 153. This ensures that the irregular texture on the surface of the inner liner is continuous in both the vertical and horizontal directions, further enhancing the aesthetics and practicality of the inner liner.
[0047] In some embodiments, to improve the service life and strength under irregular temperatures, a protective film layer is provided on the irregular textured area 2 and / or the inner sidewall 11. The thickness of the protective film layer is 3μm to 8μm, which improves the hardness and rust resistance of the inner liner surface and extends the service life of the inner liner. Preferably, in this embodiment 1, the protective film layer is a silicon dioxide film. Silica film has good chemical stability and heat resistance, and can effectively protect the inner liner surface from corrosion and wear.
[0048] In actual use, participants such as Figure 5 As shown, the rice grains 3 are supported by the protrusion 22 and cannot enter the recess 21, thereby reducing the contact area between the recess 21 and the rice grains 3, thus achieving the characteristic that the inner side does not occupy the rice grains 3.
[0049] In summary, the zero-coating inner liner provided by this utility model has the following technical effects:
[0050] 1. A non-stick effect is achieved through a unique irregular texture design, eliminating the need for any coating materials and thus avoiding potential health risks associated with coatings, meeting consumers' needs for healthy eating and safety;
[0051] 2. The irregular textured area 2 occupies at least half of the area of the inner wall 11 of the inner pot, and the recessed part 21 is provided with a number of protrusions 22 at intervals. This design effectively reduces the direct contact area between the food and the surface of the inner pot, reduces the adhesion of the food, makes the food less likely to stick to the pot during cooking, and improves the cooking effect.
[0052] 3. Compared with the zero-coating inner liner that uses micron-level texture and forms a protective film through vapor deposition, the irregular texture design of this zero-coating inner liner is more reasonable, making it less likely for food to get stuck in it, thus reducing the difficulty of cleaning and improving the convenience of use;
[0053] 4. This zero-coating inner liner does not require expensive vapor deposition or other complex surface treatment technologies. The required irregular texture can be formed simply through machining, thereby reducing production costs and improving the product's market competitiveness.
[0054] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.
Claims
1. A zero-coat liner, characterized by, The inner container body (1) comprises an inner side wall (11) and an outer side wall (12), the inner side wall (11) is recessed to form a containing groove for containing food materials, an irregular texture area (2) is arranged on the inner side wall (11), the irregular texture area (2) accounts for at least one half of the area of the inner side wall (11), a recessed part (21) is arranged in the irregular texture area (2), and a plurality of protruding parts (22) are arranged in the recessed part (21) at intervals, and the protruding parts (22) are aligned with the surface of the inner side wall (11).
2. The zero-coating liner according to claim 1, wherein, The depth H of the recessed part (21) is 0.2mm-0.5mm.
3. The zero-coating liner according to claim 1, wherein, The shape and size of every two protruding parts (22) are different.
4. The zero-coating liner of claim 1, wherein, The inner container body (1) comprises a container mouth (13), a container neck (14) and a container body (15) from top to bottom, the irregular texture area (2) is arranged on the inner side of the container body (15), and the area of the irregular texture area (2) is not less than one half of the area of the inner side of the container body (15).
5. A zero-coat liner according to claim 4, wherein, The area of the irregular texture area (2) is equal to the area of the inner side of the container body (15).
6. The zero-coating liner of claim 4, wherein, The inner circle diameter of the container neck (14) is smaller than the inner circle diameter of the container mouth (13), and the outer circle diameter of the container mouth (13) is larger than the outer circle diameter of the container body (15).
7. The zero-coating liner of claim 4, wherein, The edge of the container mouth (13) is provided with a chamfer.
8. The zero-coating liner according to claim 4, wherein, The container body (15) comprises a vertical side plate (151), a horizontal bottom plate (152) and a transition curved plate (153) between the two, and the irregular texture area (2) is continuously arranged on the vertical side plate (151), the horizontal bottom plate (152) and the transition curved plate (153).
9. The zero-coating liner of claim 1, wherein, The irregular texture area (2) and / or the inner side wall (11) is provided with a protective film layer, and the thickness of the protective film layer is 3-8μm.
10. The zero-coating liner according to claim 9, wherein, The protective film layer is a silicon dioxide film.