Non-stick pan

Abstract

The utility model discloses a non-stick pan which comprises a pan body, a plurality of groove arrays are distributed on the inner surface of the pan body, each groove array is provided with a plurality of anti-sticking grooves, and the anti-sticking grooves are formed in the inner surface and are in a concave shape. In any groove array, a first spacing part which protrudes upwards relative to the adjacent anti-sticking grooves is arranged between the adjacent anti-sticking grooves; second spacing parts which protrude upwards relative to the anti-sticking grooves of the adjacent groove arrays are arranged between the adjacent groove arrays, and the surface area of the first spacing parts is smaller than that of the second spacing parts. The plurality of groove arrays are arranged on the inner surface of the pot body, so that the contact area between food materials and the inner surface of the pot body is reduced, the roughness of the inner surface of the pot body is distributed in a stepped mode, the surface energy of the inner surface of the pot body is reduced, the pot body has certain pure physical non-stick characteristic, and the inner surface of the pot body does not need to be sprayed with a non-stick coating. Therefore, the coating has a certain non-stick characteristic, and a series of defects of a non-stick coating are avoided.

Description

Technical Field

[0001] The utility model belongs to the field of cookware, and particularly relates to a non-stick pan. Background Art

[0002] Due to its convenient cleaning characteristics and excellent user experience, non-stick pans are becoming more and more popular among consumers. At present, the non-stick effect of non-stick pans on the market is mainly achieved by spraying non-stick coatings. However, the wear resistance of the non-stick coatings on the surface of cookware is poor. When cooking hard ingredients such as shells, the non-stick coatings are extremely easy to be scratched and peeled off. After the non-stick coatings are peeled off, the non-stick performance of the cookware will be significantly reduced, shortening the service life of the cookware. Moreover, the peeled-off non-stick coatings are easily mixed into the ingredients and eaten. Although a small amount of accidental ingestion has little impact on the body, long-term accumulation also poses a certain threat to physical health. In addition, the non-stick coatings on the surface of cookware are prone to volatilize harmful substances in a high-temperature environment for a long time, endangering physical health.

[0003] To avoid the problem of coating peeling, the prior art has proposed technical solutions to improve non-stickiness by using physical non-stick structures. The basic structure of these technical solutions is to form a number of micro-pits or micro-protrusions on the inner surface of the pan, so that the inner surface of the pan presents an uneven form. This structure often needs to cooperate with cooking oil to achieve non-stickiness. Its basic principle is also to make full use of the characteristics of the uneven surface that is conducive to storing cooking oil to achieve non-stickiness with oil, rather than achieving non-stickiness based on the structural characteristics of the physical structure itself. It can be seen that the prior art still lacks a pure physical non-stick structure. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a non-stick pan to solve at least one of the above problems.

[0005] To solve the above technical problem, the utility model adopts the following technical scheme: A non-stick pan includes a pan body. A plurality of groove arrays are distributed on the inner surface of the pan body. Each groove array has a plurality of anti-stick grooves. The anti-stick grooves are arranged on the inner surface and are in a concave shape. Among them, in any groove array, a first spacer protruding upward relative to adjacent anti-stick grooves is arranged between adjacent anti-stick grooves; a second spacer protruding upward relative to the anti-stick grooves of adjacent groove arrays is arranged between adjacent groove arrays, and the surface area of the first spacer is smaller than the surface area of the second spacer. The technical scheme has the following technical effects:

[0006] The present utility model provides a plurality of groove arrays on the inner surface of the pot body. Since the second spacer is formed between adjacent groove arrays, the second spacer is distributed in a criss-cross pattern on the inner surface of the pot body. Therefore, when cooking food, the pot body can fully support and heat the food through the second spacer. Since each groove array is configured to have a structure with a plurality of non-stick grooves, when cooking food, the pot body can avoid the food in the area of the groove array through the non-stick grooves in each groove array. It is difficult for the food to enter the non-stick grooves with small depressions and small sizes, so that each groove array only contacts the food through the first spacer, reducing the contact area between the food and each groove array. The structure of the groove array can reduce the contact area between the food and the inner surface of the pot body, and make the roughness of the inner surface of the pot body distributed in a stepped manner, reducing the surface energy of the inner surface of the pot body, so that the pot body has a certain pure physical non-stick property. Without spraying a non-stick coating on the inner surface of the pot body, it can have a certain non-stick property, avoiding a series of defects of the non-stick coating and ensuring the safety and health of users. The surface area of the first spacer is smaller than that of the second spacer, so that the contact area between each groove array and the food is small, which can prevent the food from adhering to the first spacer of the groove array when turning the food, improving the non-stick performance of the pot body.

[0007] In the above non-stick pot, the area of the projection of the non-stick groove along the normal direction of the inner surface is larger than the surface area of the first spacer and smaller than the surface area of the second spacer. By setting the area of the projection of the non-stick groove along the normal direction of the inner surface to be larger than the surface area of the first spacer, in each groove array, the area occupied by the non-stick groove for avoiding the food is smaller than the area occupied by the first spacer for contacting the food, as much as possible to prevent the food from adhering to the groove array. By setting the area of the projection of the non-stick groove along the normal direction of the inner surface to be smaller than the surface area of the second spacer, the pot body can form sufficient support for the food through the second spacer, ensuring full contact between the food and the pot body for heat transfer. At the same time, it prevents the food from falling into the groove array, improving the non-stick effect.

[0008] In the above non-stick pot, the maximum distance between adjacent groove arrays is L1, and the maximum width of the non-stick groove is L2, 10 ≤ L1:L2 ≤ 1000. By setting the width of the second spacer to be 10 times or more than 10 times the width of the non-stick groove, the width of the second spacer is relatively large, so as to effectively support the food. At the same time, the inner diameter of the non-stick groove is small, effectively preventing the food from entering the non-stick groove, and the non-stick effect is good. The width of the second spacer is set within 1000 times the width of the non-stick groove, which can avoid the second spacer being too wide and easily adhering to the food.

[0009] In the above-mentioned non-stick pan, L1 satisfies 1 mm ≤ L1 ≤ 5 mm. The maximum distance between adjacent groove arrays is set to be between 1 mm and 5 mm, and the width is not less than 1 mm, so that the width of the second spacer is sufficient to effectively support the food ingredients, and the width is not greater than 5 mm, which can prevent the food ingredients from easily adhering to the second spacer due to the excessive width of the second spacer, and ensure the non-stick effect of the pan body.

[0010] In the above-mentioned non-stick pan, the maximum distance between adjacent groove arrays is L1, and in any of the groove arrays, the maximum width of the first spacer is L3, and 100 ≤ L1:L3 ≤ 5000. The width L1 of the second spacer is set to be much larger than the width L3 of the first spacer, so that the food ingredients mainly contact with the second spacer to support the food ingredients and conduct heat transfer. As a separation structure between two anti-stick grooves, the width of the second spacer is sufficient to prevent the food ingredients in the groove array area from collapsing into the anti-stick grooves, thereby improving the anti-stick performance of the groove array.

[0011] In the above-mentioned non-stick pan, L3 satisfies L3 ≤ 10 μm. By setting the first spacer to be not greater than 10 μm, the food ingredients can be supported to a certain extent to prevent the food ingredients in the groove array area from entering the anti-stick grooves as much as possible. At the same time, it is avoided that the first spacer is too wide, resulting in the adhesion of food ingredients to the first spacer during cooking.

[0012] In the above-mentioned non-stick pan, the surfaces of the first spacer and / or the second spacer are uneven rough surfaces. The setting of the rough surface makes it easier for the food ingredients to separate from the first spacer and the second spacer when stir-frying the food ingredients, avoiding the surfaces of the first spacer and the second spacer from being too smooth and easily adhering to the food ingredients, and improving the non-stick property of the inner surface of the pan body.

[0013] In the above-mentioned non-stick pan, the roughness Ra of the rough surface satisfies 2 μm ≤ Ra ≤ 8 μm. Through experimental verification, when the surface of the second spacer is in a relatively rough state, the non-stick property is better than that in the mirror state; however, the roughness of the second spacer cannot be too large, otherwise the sense of jerk generated during shoveling is too strong, affecting the use experience. Through the non-oil-fried egg experiment, when Ra ≥ 2 μm, there is basically no residual egg stain on the surface of the second spacer after frying the egg; while in the scheme with Ra < 2 μm, there are sporadic egg stains distributed on the surface of the second spacer after frying the egg.

[0014] In the above-mentioned non-stick pan, the groove array is square, and the groove array is tiled on the inner surface; or, the groove array is circular, and the groove array is tiled on the inner surface. This makes the overall non-stick effect of the inner surface of the pan body better.

[0015] In the above non-stick pan, the inner surface of the anti-stick groove is hemispherical, and the depth of the anti-stick groove is greater than 10 μm. The hemispherical design makes it extremely easy for the ingredients to escape from the anti-stick groove when stir-frying, avoiding the ingredients falling into the anti-stick groove from remaining inside the anti-stick groove, ensuring the cleanliness of the anti-stick groove. The depth H of the anti-stick groove is greater than 10 μm, making it difficult for the groove array to change color after cleaning.

[0016] The features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and drawings. Brief Description of the Drawings

[0017] The present utility model will be further described below in conjunction with the drawings and specific embodiments:

[0018] Figure 1 is a cross-sectional view of a non-stick pan of the present utility model;

[0019] Figure 2 is Figure 1 an enlarged view of part A of

[0020] Figure 3 is a top view of a non-stick pan of the present utility model;

[0021] Figure 4 is Figure 3 an enlarged view of part B of

[0022] Figure 5 is a structural diagram of the groove array under a microscope.

[0023] Reference Signs:

[0024] 100, pan body; 110, inner bottom wall; 120, inner side wall;

[0025] 200, groove array; 210, anti-stick groove;

[0026] 310, first spacer; 320, second spacer. Detailed Description of the Embodiments

[0027] A non-stick pan proposed by the present utility model includes a pan body. A plurality of groove arrays are distributed on the inner surface of the pan body. Each groove array has a plurality of anti-stick grooves, and the anti-stick grooves are arranged on the inner surface and are in a concave shape. Among them, in any groove array, a first spacer protruding upward relative to adjacent anti-stick grooves is arranged between adjacent anti-stick grooves; a second spacer protruding upward relative to the anti-stick grooves of adjacent groove arrays is arranged between adjacent groove arrays, and the surface area of the first spacer is smaller than the surface area of the second spacer. In the present utility model, a plurality of groove arrays are arranged on the inner surface of the pan body. Since the second spacer is formed between two adjacent groove arrays, the second spacer is arranged in a criss-cross pattern on the inner surface of the pan body. Therefore, when cooking food materials, the pan body can fully support and heat the food materials through the second spacer; since each groove array is arranged in a structure with a plurality of anti-stick grooves, when cooking food materials, the pan body can avoid the food materials in the area of the groove array through the anti-stick grooves in each groove array. It is difficult for the food materials to enter the anti-stick grooves with small size and depression, so that each groove array only contacts the food materials through the first spacer, reducing the contact area between the food materials and each groove array. The structure of the groove array can reduce the contact area between the food materials and the inner surface of the pan body, and make the roughness of the inner surface of the pan body distributed in a stepped manner, reducing the surface energy of the inner surface of the pan body, so that the pan body has a certain pure physical non-stick property. Without spraying a non-stick coating on the inner surface of the pan body, it can have a certain non-sticking property, avoiding a series of defects of the non-stick coating and ensuring the safety and health of users. The surface area of the first spacer is smaller than the surface area of the second spacer, so that the contact area between each groove array and the food materials is small, which can prevent the food materials from adhering to the first spacer of the groove array when turning the food materials, improving the non-stick performance of the pan body.

[0028] The technical solutions of the embodiments of the present utility model will be explained and described below with reference to the accompanying drawings of the embodiments of the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model, not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

[0031] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0033] Embodiment 1:

[0034] A non-stick pan, as Figures 1 to 5 shown, includes a pan body 100, on the inner surface of the pan body 100, a plurality of groove arrays 200 are distributed, each groove array 200 has a plurality of non-stick grooves 210, the non-stick grooves 210 are recessed on the inner surface of the pan body 100, and the plurality of non-stick grooves 210 are arrayed to form the groove array 200. In any one groove array 200, a first spacer 310 is provided between any two adjacent non-stick grooves 210, and a second spacer 320 is provided between any two adjacent groove arrays 200. Since the non-stick grooves 210 are recessed, the first spacer 310 protrudes upward relative to the adjacent non-stick grooves 210, and the second spacer 320 protrudes upward relative to the adjacent non-stick grooves 210. The surface area of the first spacer 310 is smaller than the surface area of the second spacer 320. Preferably, the non-stick grooves 210 on the surface of the pan body 100 are formed by laser etching.

[0035] The present utility model provides a plurality of groove arrays 200 on the inner surface of the pot body 100. Since the second spacer 320 is formed between adjacent groove arrays 200, the second spacer 320 is distributed in a criss-cross pattern on the inner surface of the pot body 100. Therefore, when cooking food, the pot body 100 can fully support and heat the food through the second spacer 320. Since each groove array 200 is configured to have a structure with a plurality of non-stick grooves 210, when cooking food, the pot body 100 can avoid the food in the area of each groove array 200 through the non-stick grooves 210 in each groove array 200. It is difficult for the food to enter the non-stick grooves 210 with small and sunken sizes, so that each groove array 200 only contacts the food through the first spacer 310, reducing the contact area between the food and each groove array 200. The structure of the groove array 200 can reduce the contact area between the food and the inner surface of the pot body 100, and make the roughness of the inner surface of the pot body 100 distributed in a stepped manner, reducing the surface energy of the inner surface of the pot body 100, so that the pot body 100 has a certain pure physical non-stick property. The inner surface of the pot body 100 does not need to be sprayed with a non-stick coating and can have a certain non-stick property, avoiding a series of defects of the non-stick coating and ensuring the safety and health of users. The surface area of the first spacer 310 is smaller than the surface area of the second spacer 320, so that the contact area between each groove array 200 and the food is small, which can prevent the food from adhering to the first spacer 310 of the groove array 200 when turning the food, improving the non-stick performance of the pot body 100.

[0036] As Figure 3 shown, it is stipulated that the area of the projection of the non-stick groove 210 along the normal direction of the inner surface is A, the surface area of the first spacer 310 is stipulated as B, and the surface area of the second spacer 320 is stipulated as C, satisfying A > B and A < C. By setting the area of the projection of the non-stick groove 210 along the normal direction of the inner surface to be greater than the surface area of the first spacer 310, in each groove array 200, the area occupied by the non-stick grooves 210 for avoiding the food is less than the area occupied by the first spacer 310 for contacting the food, as much as possible to prevent the food from adhering to the groove array 200. By setting the area of the projection of the non-stick groove 210 along the normal direction of the inner surface to be less than the surface area of the second spacer 320, the pot body 100 can form sufficient support for the food through the second spacer 320, ensuring sufficient contact between the food and the pot body 100 for heat transfer. At the same time, it prevents the food from falling into the groove array 200, improving the non-stick effect.

[0037] As Figure 4As shown, the widths of any second spacing portions 320 are the same, and the widths of any first spacing portions 310 are the same. It is stipulated that the maximum distance between two adjacent groove arrays 200 is L1. That is, the width of the second spacing portion 320 is L1, and the maximum width of the non-stick groove 210 is L2, satisfying 10 ≤ L1:L2 ≤ 1000. By setting the width of the second spacing portion 320 to be 10 times or more than the width of the non-stick groove 210, the width of the second spacing portion 320 is relatively large, so as to effectively support the food materials. At the same time, the inner diameter of the non-stick groove 210 is small, effectively preventing the food materials from entering the non-stick groove 210, and the non-stick effect is good. The width of the second spacing portion 320 is set to be within 1000 times the width of the non-stick groove 210, which can avoid the second spacing portion 320 being too wide and easily adhering to the food materials. L1 satisfies 1mm ≤ L1 ≤ 5mm. That is, the maximum distance between two adjacent groove arrays 200 is set to be between 1mm and 5mm, and the width is not less than 1mm, so that the width of the second spacing portion 320 is sufficient to effectively support the food materials, and the width is not greater than 5mm, which can avoid the second spacing portion 320 being too wide and causing the food materials to easily adhere to the second spacing portion 320, ensuring the non-stick effect of the pot body 100. The value of L1 can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm.

[0038] It is stipulated that in any groove array 200, the maximum width of the first spacing portion 310 is L3, satisfying 100 ≤ L1:L3 ≤ 5000. That is, the width L1 of the second spacing portion 320 is set to be much larger than the width L3 of the first spacing portion 310, so that the food materials mainly contact with the second spacing portion 320 to support the food materials and conduct heat transfer. The second spacing portion 320, as a separating structure between two non-stick grooves 210, its width is sufficient to prevent the food materials in the area of the groove array 200 from collapsing into the non-stick grooves 210, improving the non-stick performance of the groove array 200.

[0039] L3 satisfies L3 ≤ 10μm. By setting the width L3 of the first spacing portion 310 to be not greater than 10μm, the first spacing portion 310 can support the food materials to a certain extent, so as to try to prevent the food materials in the area of the groove array 200 from entering the non-stick grooves 210. At the same time, it can avoid the first spacing portion 310 being too wide and causing the food materials to adhere to the first spacing portion 310 during cooking.

[0040] Such as Figure 2As shown, in this embodiment, the inner surface of the anti-stick groove 210 is hemispherical. The hemispherical design enables the food ingredients to easily escape from the anti-stick groove 210 during the stir-frying process, preventing the food ingredients that fall into the anti-stick groove 210 from remaining inside the anti-stick groove 210, ensuring the cleanliness of the anti-stick groove 210. The depth H of the anti-stick groove 210 is greater than 10 μm, making the groove array 200 less likely to change color after cleaning. Preferably, the opening width of the anti-stick groove 210 is between 10 μm and 100 μm, ensuring that the inner diameter of the anti-stick groove 210 is small enough so that the food ingredients can basically not enter the anti-stick groove 210, preventing the anti-stick groove 210 from being blocked and ensuring the persistent non-stick property of the inner surface of the pot body 100.

[0041] To enhance the non-stick property of the inner surface of the pot body 100, in this embodiment, the surfaces of the first spacer 310 and the second spacer 320 are set as uneven rough surfaces. The setting of the rough surfaces enables the food ingredients to more easily separate from the first spacer 310 and the second spacer 320 during the stir-frying process, preventing the surfaces of the first spacer 310 and the second spacer 320 from being too smooth and prone to adhering to the food ingredients. The inner surface of the pot body 100 can be polished by a grinding structure such as sandpaper, or other methods can be used to make the roughness Ra of the rough surface satisfy 2 μm ≤ Ra ≤ 8 μm. Through experimental verification, when the surface of the second spacer 320 is in a relatively rough state, its non-stick property is better than that in the mirror state; however, the roughness of the second spacer 320 cannot be too large, otherwise the sense of blockage generated during shoveling is too strong, affecting the use experience. Through the non-stick fried egg experiment, when Ra ≥ 2 μm, there is basically no residual egg stain on the surface of the second spacer 320 after frying the egg; while in the scheme with Ra < 2 μm, there are sporadic egg stains distributed on the surface of the second spacer 320 after frying the egg.

[0042] In this embodiment, the inner surface of the pot body 100 includes an inner bottom wall 110 and an inner side wall 120 surrounding the inner bottom wall 110. The groove array 200 is laid flat on the inner bottom wall 110 and the inner side wall 120. Of course, it can be understood that the groove array 200 can also be laid flat only on the inner bottom wall 110. As Figure 3 shown, the groove array 200 in this embodiment is square, which is convenient for production and processing. Of course, the groove array 200 in this embodiment can also be circular to adapt to the inner surface of the pot body 100.

[0043] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and retouches should also be regarded as within the protection scope of the present invention.

Claims

1. A non-stick pan, comprising a pan body, characterized in that: The inner surface of the pot body is distributed with a plurality of groove arrays, each of the groove arrays has a plurality of anti-stick grooves, and the anti-stick grooves are arranged on the inner surface and are concave; Among them, in any of the groove arrays, a first spacer portion protruding upward relative to the adjacent anti-sticking grooves is arranged between adjacent anti-sticking grooves; a second spacer portion protruding upward relative to the anti-sticking grooves of the adjacent groove arrays is arranged between adjacent groove arrays, and the surface area of ​​the first spacer portion is smaller than the surface area of ​​the second spacer portion.

2. A non-stick pan according to claim 1, characterized in that: The projection area of ​​the anti-sticking groove along the normal direction of the inner surface is larger than the surface area of ​​the first spacer, and the projection area is smaller than the surface area of ​​the second spacer.

3. A non-stick pan according to claim 2, characterized in that: The maximum spacing between adjacent groove arrays is L1, the maximum width of the anti-sticking groove is L2, 10≤L1:L2≤1000.

4. A non-stick pan according to claim 3, characterized in that: The L1 satisfies 1mm≤L1≤5mm.

5. The non-stick pan according to claim 1, characterized in that: The maximum spacing between adjacent groove arrays is L1; in any groove array, the maximum width of the first spacer is L3, 100≤L1: L3≤5000.

6. The non-stick pan according to claim 5, characterized in that: The L3 satisfies L3≤10 μm.

7. A non-stick pan according to any one of claims 1 to 6, characterized in that: The surface of the first spacer and / or the second spacer is a rough surface with uneven surfaces.

8. The non-stick pan according to claim 7, characterized in that: The roughness Ra of the rough surface satisfies 2 μm≤Ra≤8 μm.

9. A non-stick pan according to any one of claims 1 to 6, characterized in that: The groove array is square, and the groove array is flat on the inner surface; or, the groove array is circular, and the groove array is flat on the inner surface.

10. A non-stick pan according to any one of claims 1 to 6, characterized in that: The inner surface of the anti-sticking groove is hemispherical, and the depth of the anti-sticking groove is greater than 10 μm.

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