Non-stick pan without coating

Abstract

The utility model discloses an uncoated non-stick pan, which relates to the technical field of cookware, a pan body comprises a base material layer and a protective layer which are laminated, a plurality of oil storage holes are formed on the inner surface of the base material layer, the oil storage holes form an anti-stick surface, the protective layer is arranged on the anti-stick surface, and the protective layer is arranged on the anti-stick surface. And the ratio of the thickness of the protective layer to the equivalent diameter of the oil storage hole is 1: 80-1: 10. The non-stick pan without the coating has the advantages of being long in service life and good in non-stick effect.

Description

Technical Field

[0001] The utility model relates to the technical field of cookware, in particular to a non-stick cookware without coating. Background Art

[0002] At present, conventional non-stick pans need to be sprayed with chemical non-stick coatings on the inner surface of the pans. The most common and best non-stick coatings are Teflon coatings and ceramic coatings. However, this chemical non-stick coating is easy to decompose and become ineffective at high temperatures, and the coating will be quickly destroyed and easily fall off when used with a metal spatula. Therefore, how to make the inner surface of the pan produce a non-stick effect without using a coating has been a problem that people have been studying.

[0003] In the prior art, oil storage micropores are provided at the bottom of the pot body to reduce the contact area between the food and the bottom of the pot, thereby establishing a physical non-stick barrier and achieving a good non-stick effect without spraying a chemical non-stick coating.

[0004] However, due to the extremely small pore size, the micropores in the prior art are easily blocked, thereby affecting the service life of the non-stick pan. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model provides a non-coating non-stick pan with the advantages of long service life and good non-stick effect.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A coating-free non-stick pan comprises a pan body, wherein the pan body comprises a base material layer and a protective layer which are stacked, wherein a plurality of oil storage holes are formed on the inner surface of the base material layer, wherein the plurality of oil storage holes form an anti-stick surface, wherein the protective layer is arranged on the anti-stick surface, and wherein the ratio of the thickness of the protective layer to the equivalent diameter of the oil storage holes is 1:80 to 1:10.

[0008] Optionally, the equivalent diameter of the oil storage hole is 60-150 μm.

[0009] Optionally, the equivalent thickness of the protective layer is 2-6 μm.

[0010] Optionally, the center distance between any two adjacent oil storage holes is 20 to 300 μm.

[0011] Optionally, the hardness of the protective layer is greater than the hardness of the anti-stick surface.

[0012] Optionally, the protective layer is a titanium nitride layer, a titanium carbide layer or a titanium aluminum oxide film.

[0013] Optionally, a boss is formed between adjacent oil storage holes, and a width of the boss is smaller than a width of the oil storage hole.

[0014] Optionally, the plurality of oil storage holes are evenly distributed or disorderly distributed on the surface of the substrate layer.

[0015] Optionally, the pot body is formed by enclosing side walls and a horizontal bottom wall.

[0016] Optionally, the side wall is provided with a handle for easy gripping, one end of the handle extends in a direction away from the pot body, and the other end is detachably fixed to the pot body.

[0017] In the present application, the pot body includes a substrate layer, an anti-stick surface and a protective layer which are arranged in sequence. The anti-stick surface includes a plurality of oil storage holes. The ratio of the thickness of the protective layer to the diameter of the oil storage holes is 1:80 to 1:10. The oil storage holes formed at this ratio can better store grease. When the ratio of the thickness of the protective layer to the diameter of the oil storage holes is greater than 1:10, the oil storage holes will be too small, resulting in the grease not being able to enter the micropores. When the ratio of the thickness of the protective layer to the diameter of the oil storage holes is less than 1:80, the oil storage holes will be too large, resulting in grease loss. At the same time, controlling the diameter of the oil storage holes and the thickness of the protective layer can ensure that the micropores will not be blocked by the oil storage holes due to the thick protective layer, thereby improving the non-stick performance of the non-stick pan.

[0018] These features and advantages of the utility model will be disclosed in detail in the following specific embodiments and drawings. The best implementation or means of the utility model will be fully presented in conjunction with the drawings, but it is not a limitation of the technical solution of the utility model. In addition, these features, elements and components appearing in each of the following texts and drawings are multiple, and are marked with different symbols or numbers for convenience, but all represent components with the same or similar structure or function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0021] Figure 2 It is a microscopic diagram of the pot body;

[0022] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle.

[0023] Among them, 1. pot body; 11. base material layer; 12. anti-stick surface; 121. oil storage hole; 122. boss; 13. protective layer; 2. handle. DETAILED DESCRIPTION

[0024] The following is a detailed description of embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments in the implementation manner are intended to be used to explain the present invention and should not be construed as limiting the present invention.

[0025] References in this specification to "one embodiment" or "an example" or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment of the present patent disclosure. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0026] Example:

[0027] like Figure 1 As shown, this embodiment provides a non-stick pan without coating, including a pan body 1, wherein the pan body 1 includes a base material layer 11 and a protective layer 13 which are stacked, wherein a plurality of oil storage holes 121 are formed on the inner surface of the base material layer 11, wherein the plurality of oil storage holes 121 form an anti-stick surface 12, wherein the protective layer 13 is arranged on the anti-stick surface 12, and the ratio of the thickness of the protective layer 13 to the equivalent diameter of the oil storage hole 121 is 1:80 to 1:10.

[0028] In this embodiment, a non-stick pan without coating is provided, comprising a substrate layer 11, an anti-stick surface 12 and a protective layer 13 arranged in sequence, wherein a plurality of micron-sized oil storage holes 121 are arranged on the anti-stick surface 12, and the micron-sized oil storage holes 121 have the function of storing and locking oil when actually used for cooking, thereby realizing the physical non-stick function. A protective layer 13 for protecting the mouth of the oil storage hole 121 is also arranged on the surface of the anti-stick surface 12, so as to prevent the spatula from directly rubbing against the oil storage hole 121 during cooking, thereby causing the oil storage hole 121 to be worn, thereby prolonging the non-stick effect of the non-stick pan. The ratio of the thickness of the protective layer 13 to the equivalent diameter of the oil storage hole 121 is 1:80 to 1:10. The oil storage hole 121 formed under this ratio can better store grease. When the ratio of the thickness of the protective layer 13 to the diameter of the oil storage hole 121 is greater than 1:10, the oil storage hole 121 will be too small to allow grease to enter the micropores. When the ratio of the thickness of the protective layer 13 to the diameter of the oil storage hole 121 is less than 1:80, the oil storage hole 121 will be too large to allow grease to leak. At the same time, controlling the diameter of the oil storage hole 121 and the thickness of the protective layer 13 can ensure that the micropores will not be blocked by the oil storage hole 121 due to the thick protective layer 13. It should be noted that the shape of the oil storage hole is not limited, and its equivalent diameter refers to the maximum circumscribed circle size of the circumferential contour of the opening of the oil storage hole 121 on the inner surface of the substrate layer 11.

[0029] The equivalent diameter of the oil storage hole 121 is 60-150 μm.

[0030] The oil storage hole 121 with a diameter less than 150 μm can fully absorb grease to form an oil film layer while preventing food residues and corrosive solutions from entering the oil storage hole 121 to affect the non-stick performance of the anti-stick surface 12; if the diameter of the oil storage hole 121 is too large, food residues or corrosive solutions may enter the hole, and cannot be effectively removed during cleaning, which is harmful to human health. The oil storage hole 121 can be directly processed on the surface of the substrate layer 11 by laser, etching or physical pressing, and a preset concave-convex texture shape is formed on the inner surface of the substrate layer 11 for cooking food. The cost is low, the efficiency is high, and the shape is varied, which can further meet the various needs of consumers. However, the oil storage hole 121 in the present application is micron-level, and it is difficult to process micron-level oil storage holes 121 using etching or physical pressing methods. Therefore, the present application gives priority to laser processing. Of course, with the advancement of technology, there may be other processing methods in the future, but micropores of such size obtained by any processing method should be covered within the scope of protection of the present application.

[0031] The center distance between any two adjacent oil storage holes 121 is 20-300 μm.

[0032] The smaller the center distance between any two adjacent oil storage holes 121, the higher the arrangement density of the oil storage holes 121, and the smaller the contact area between the cookware and the food. Increasing the arrangement density of the oil storage holes 121 can better achieve the purpose of storing gas and oil, and improve the non-stickiness of the cookware. However, if the center distance is too small, the processing difficulty of the oil storage holes 121 will increase, thereby increasing the manufacturing cost. Therefore, in this embodiment, the center distance between any two adjacent oil storage holes 121 is preferably 100 μm.

[0033] The equivalent thickness of the protective layer 13 is 2-6 μm.

[0034] When the protective layer 13 is less than 2 μm, the wear resistance of the oil storage hole 121 may be reduced and it may be easy to deform. When the thickness of the protective layer 13 is greater than 6 μm, the non-stick pan may have poor thermal conductivity and high manufacturing cost. In this embodiment, the equivalent thickness of the protective layer 13 is preferably 4 μm. It should be noted that the thickness of the protective layer 13 will not be completely consistent everywhere during production, so this application uses equivalent thickness to evaluate the thickness of the protective layer 13, and the equivalent thickness refers to the average thickness of the protective layer.

[0035] A boss 122 is formed between adjacent oil storage holes 121 , and the width of the boss 122 is smaller than the width of the oil storage hole 121 .

[0036] In this embodiment, the oil storage hole 121 and the boss 122 form a concave-convex texture for anti-sticking, and the width of the boss 122 is smaller than the width of the oil storage hole 121 to reduce the contact area between the food and the non-stick pan surface, further improving the anti-sticking effect. In this embodiment, the protective layer 13 covers the entire surface of the oil storage hole 121 and the boss 122. In other embodiments, the protective layer 13 may only cover the entire surface of the boss 122 and the surface of the upper part of the oil storage hole 121, that is, the bottom of the oil storage hole 121 may not be covered with the protective layer 13.

[0037] The plurality of oil storage holes 121 are evenly distributed or disorderly distributed on the surface of the substrate layer 11 .

[0038] In this embodiment, the oil storage holes 121 are distributed in an extremely dense uniform or disordered state on the outer surface of the substrate layer 11. Specifically, when the oil storage holes 121 are distributed in a uniform state on the outer surface of the substrate layer 11, they may be in a matrix or honeycomb shape.

[0039] The hardness of the protective layer 13 is greater than the hardness of the release surface 12 .

[0040] The hardness of the protective layer 13 is greater than that of the anti-stick surface 12, so the protective layer 13 is more resistant to external impact. The setting of the protective layer 13 significantly improves the wear resistance of the oil storage hole 121. When using a shovel for cooking, the oil storage hole 121 will not be deformed, and it is also more convenient to clean the pot with the help of hard materials such as steel wool.

[0041] The protective layer 13 is a titanium nitride layer, a titanium carbide layer or a titanium aluminum oxide film.

[0042] The titanium nitride layer, titanium carbide layer or titanium aluminum oxide film can improve the wear and scratch resistance of the inner surface of the non-stick pan, and make the inner surface have good chemical stability to prevent it from reacting and changing color after high temperature. This ensures that the inner surface of the non-stick pan will not be scratched and will resist discoloration after long-term use.

[0043] The pot body 1 is formed by enclosing side walls and a horizontal bottom wall.

[0044] In this embodiment, the side walls and the horizontal bottom wall enclose a pot body 1 for cooking. The depth of the pot body 1 can be selected according to the purpose. A shallow pot body 1 is more suitable for cooking or frying food, while a deep pot body 1 is suitable for stewing or boiling soup. The edge of the pot body 1 is usually designed with a rolled edge, which helps prevent the food from overflowing when stir-frying. A drip edge can also be designed at the edge to allow excess oil or soup to drip smoothly, keeping the cooking table clean.

[0045] The side wall is provided with a handle for easy gripping, one end of the handle extends in a direction away from the pot body 1 , and the other end of the handle is detachably fixed to the pot body 1 .

[0046] The handle is detachably connected to the side wall, which effectively utilizes the storage space. In addition, pots of different diameters can be sold as a set with only one handle, which reduces production costs. One or more handles are provided on the pot body 1 for easy picking and operation. The shape and material of the handle can be designed according to ergonomics to ensure a comfortable feel during use and to prevent slipping and scalding.

[0047] The substrate layer 11 can be made of metals such as iron, stainless steel, aluminum, and titanium. Preferably, the substrate layer 11 can be a single layer of titanium metal or a composite layer with an inner surface of titanium metal. Non-stick pans made of titanium metal have the advantages of high strength, low density, high temperature resistance, and corrosion resistance. At the same time, titanium metal also has good biological inertness and antibacterial properties. No heavy metals will be precipitated during use, which improves the safety of the pan. The use of a composite substrate layer 11 with an inner surface of titanium metal can not only make the pan have the advantages of a titanium pan, but also avoid the high cost caused by the use of titanium metal for the entire substrate layer 11.

[0048] When the user uses the pot for the first time, animal fat or vegetable fat can be used to heat the pot. The diameter of the oil storage hole 121 expands as the temperature of the pot body 1 rises, and shrinks as the temperature of the pot body 1 drops. When the user heats the pot body 1, the diameter of the oil storage hole 121 expands to accommodate more fat; when the user stops heating the pot body 1, the temperature of the pot body 1 gradually cools down, the diameter of the oil storage hole 121 shrinks, and the fat entering the hole is locked inside, further improving the non-stick effect.

[0049] In some embodiments, the area of ​​all oil storage holes 121 accounts for 80% to 95% of the area of ​​the entire anti-stick surface 12, and the area of ​​all bosses 122 accounts for 5% to 20% of the area of ​​the entire anti-stick surface 12. If the bosses 122 occupy a large area, the non-stick pan effect will be reduced; if the oil storage hole 121 occupies a large area, the bosses 122 will reduce the protection of the oil storage hole 121 area, especially in the process of brushing the pan with a steel ball all year round, the oil storage hole 121 will gradually wear out. This partial layout ensures that the boss 122 can protect the oil storage hole 121 without affecting the non-stick pan effect.

[0050] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

Claims

1. A non-stick pan without coating, comprising a pan body (1), characterized in that: The pot body (1) comprises a stacked base material layer (11) and a protective layer (13); a plurality of oil storage holes (121) are formed on the inner surface of the base material layer (11); the plurality of oil storage holes (121) form an anti-stick surface (12); the protective layer (13) is arranged on the anti-stick surface (12); and the ratio of the thickness of the protective layer (13) to the equivalent diameter of the oil storage hole (121) is 1:80 to 1:

10.

2. The non-stick pan according to claim 1, characterized in that: The equivalent diameter of the oil storage hole (121) is 60-150 μm.

3. The non-stick pan according to claim 2, characterized in that: The equivalent thickness of the protective layer (13) is 2 to 6 μm.

4. The non-stick pan according to claim 1, characterized in that: The center distance between any two adjacent oil storage holes (121) is 20 to 300 μm.

5. The non-stick pan according to claim 1, characterized in that: The hardness of the protective layer (13) is greater than the hardness of the anti-stick surface (12).

6. The non-stick pan according to claim 5, characterized in that: The protective layer (13) is a titanium nitride layer, a titanium carbide layer or a titanium aluminum oxide film.

7. The non-stick pan according to any one of claims 1 to 6, characterized in that: A boss (122) is formed between adjacent oil storage holes (121), and the width of the boss (122) is smaller than the width of the oil storage hole (121).

8. The non-stick pan according to any one of claims 1 to 6, characterized in that: The plurality of oil storage holes (121) are evenly distributed or disorderly distributed on the surface of the substrate layer (11).

9. The non-stick pan according to any one of claims 1 to 6, characterized in that: The pot body (1) is formed by enclosing side walls and a horizontal bottom wall.

10. The non-stick pan according to claim 9, characterized in that: The side wall is provided with a handle for easy gripping, one end of the handle extends in a direction away from the pot body (1), and the other end is detachably fixed to the pot body (1).

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