Non-coating multi-size composite concave hole non-stick pan

Abstract

A coating-free multi-size composite concave hole non-stick pan comprises a coating-free pan body, and concave holes with more than two kinds of hole diameters are evenly distributed in the surface, making contact with food, of the pan body. The hole diameter of the first concave hole is 0.3-0.8 mm, and the hole diameter of the second concave hole is 0.05-0.29 mm; the distance between the centers of the first concave holes is 0.6-8 mm, and the distance between the centers of the second concave holes is 0.1-0.9 mm; and the hole depth is 0.05 to 0.3 mm. And the hole area of the hole diameters of the two concave holes accounts for 15-40% of the area of the whole pan body.

Description

Technical Field

[0001] The utility model relates to the preparation of a cooking utensil, namely a pot, in particular to a non-coating multi-size composite concave hole non-stick pot. Background Art

[0002] The prior art discloses a cookware with a honeycomb mesh structure on the surface; the non-stick pan has relatively large honeycomb holes with a hole diameter of more than 3 mm, and the bottom surface of the honeycomb holes is also coated with a coating, and the coating area is generally relatively large, reaching about 80-90% of the surface area of ​​the substrate, so the contact area between the coating and the food is also relatively large, resulting in a larger friction surface with the food, which also limits the use of the spatula.

[0003] The prior art also has cookware with nano-scale pores. The nano-scale pores will absorb air and grease during actual use, and will generate hot air and oil mist during the heating process, while holding up the food. Combined with the fluff effect achieved by the aforementioned nipple structure, the friction between the food and the inner surface of the pot body is reduced. Without adding chemical coatings, the non-stick effect is achieved by physical means, making it healthier for consumers to cook food. If the plate forming the pot body is titanium metal, a titanium dioxide hardening layer with a Vickers hardness of not less than HV600 will be generated on its surface after micro-arc oxidation; if the plate forming the pot body is an aluminum alloy, a aluminum oxide hardening layer with a Vickers hardness of not less than HV1000 will be generated on its surface after micro-arc oxidation. The plate is an aluminum plate, a titanium plate or a magnesium plate; the surface of the plate with shallow pits etched or punched is aluminum, magnesium or titanium. However, this material has no advantages in application.

[0004] The applicant has applied for a non-stick pan, comprising an uncoated pan body, comprising a titanium (thickness of 1 mm or more) pan body, wherein the titanium (thickness of 1 mm or more) pan body and the food contact surface are provided with evenly distributed concave holes; the concave hole diameter is 0.1 to 0.5 mm, especially 0.3 to 0.5 mm, the hole edge spacing is 0.3 to 2 mm, the hole depth is 0.1-0.3 mm, especially 0.1-0.15 mm, the hole area accounts for 15-40% of the entire pan body area, and the concave holes are circular or polygonal; the concave holes are gradually concave from a plane.

[0005] The inner wall of the existing pot body is provided with an anti-stick structure, which is a periodically distributed protrusion or / and concave portion on the inner wall, and the size of the protrusion and concave portion is between a few microns and tens of microns, but the size is too small. The above existing technologies cannot well achieve the functions of non-toxicity and non-stick. If a physical non-stick layer is provided on the surface of the pot body, it is not enough to achieve long-term non-stick, because each time the spatula is operated, it needs to rub against the pot surface repeatedly, and the long-term friction will wear the physical non-stick layer, and thus the long-term non-stick effect cannot be achieved. This problem also needs to be solved urgently. Utility Model Content

[0006] In order to solve the above problems, the purpose of the utility model is to provide a non-coating composite concave hole non-stick pan and a preparation method, especially a low-cost pressed non-stick pan.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an uncoated multi-size composite concave hole non-stick pan, including an uncoated pan body, and the pan body is provided with concave holes of two or more apertures evenly distributed on the contact surface with food; the first concave hole has an aperture of 0.3-0.8mm, and the second concave hole has an aperture of 0.05-0.29mm; the spacing between the centers of the first concave holes is 0.6-8mm, and the spacing between the centers of the second concave holes is 0.1-0.9mm; the hole depth is 0.05-0.3mm.

[0008] The ratio of the hole area of ​​the two kinds of concave holes to the whole pot body area is 15-40%.

[0009] The two types of concave holes are circular or polygonal; the concave holes are gradually concave from a plane.

[0010] The diameter of the concave hole is 0.3~0.5mm.

[0011] The layer on the pot body that contacts with food is made of iron, titanium, stainless steel, etc., such as a composite aluminum layer on the back of titanium or stainless steel.

[0012] Or a titanium or zirconium coating is provided on the layer of the pot body that contacts with food, and the thickness of the coating is 20-200 nanometers.

[0013] The preparation of the non-stick pan without coating in the present application is mainly the preparation of uniform concave holes. The non-stick pan without coating is pressed by a press machine to press the titanium plate-shaped pan body through the uniform round convex head of the alloy mold (which can match the size of the pan body and the concave shape of the pan). The non-stick pan without coating is formed by austenitic titanium or martensitic stainless steel or titanium plate to obtain a concave pan body, or iron pans can be pressed.

[0014] Even if you stir-fry at high temperature or the pan is empty, the uncoated pressed non-stick pan will not release any toxic substances or gases, will not contaminate the food being cooked or the kitchen environment, and will make cooking safer.

[0015] Beneficial effect: The two concave holes are evenly spaced. When frying non-noodle food, the distribution of the two concave holes makes it easier for the gas evaporated when the food is heated to expand, making the physical anti-stick function better (better effect when the pot or spatula is moved). The concave hole area accounts for 15% to 40% of the pot body area. Sanding, polishing and other treatments can be used to improve the roughness of the inner surface of the pot body, reduce the friction between the food and the inner surface of the pot body, and make the flipping of the spatula smoother when frying dishes. The anti-stick performance, that is, the non-stick effect, basically reaches the level of the new PTFE Teflon coating application, and the manufacturing cost is low. These features and advantages of the utility model will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the distribution of concave holes in the pot body of the utility model embodiment. DETAILED DESCRIPTION

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same objects. Figure 1 The surface of the middle pot body 1, the first type of concave hole 2; the second type of concave hole 3; the present embodiment relates to an uncoated pressed non-stick pan, and the concave holes 2 and 3 with uniform depth and uniform distribution are better, and the distribution of the concave holes can also be denser at the bottom of the pot than at the edge of the pot; the pot body plane 1 is between two adjacent concave holes.

[0019] Figure 1 This is an example of a composite structure with two concave hole diameters of 0.5mm and 0.15mm. This pattern can be repeated and cycled across the entire pot surface. The 0.5mm holes are more sparsely distributed.

[0020] Embodiment: The first concave hole has a diameter of about 0.5 mm and the second concave hole has a diameter of 0.2 mm. However, the meaning of the composite hole itself is that it can be composited with multiple sizes. It is not excluded that there can be three apertures. More than two is mainly because it excludes the situation that the possible imitation intentionally prepares an aperture similar to the first or second aperture on the basis of two apertures. Two apertures are the basic way and can meet the purpose of this application. Multiple sizes are in principle the same as this application.

[0021] In a further solution, the diameter of the first concave hole is 200 or 300, 400, 500 microns, and the surface width between the concave holes is 100 to 400 microns. The concave holes are pressed by a mold made of cemented carbide and a pressure device, so that both the concave holes and the pot body have a hardened layer structure; a mold with uniformly distributed round convex heads or polygonal convex heads is made of cemented carbide, and when pressed on the pot body plate, the concave holes are evenly distributed on the pot body. Because there are uniform round convex heads (round head needles) on the mold, the round convex heads correspond to the concave holes on the pot body, and the round convex heads designed on the mold can control the distribution of the concave holes. The spacing between the centers of the concave holes is 0.6 to 2 mm, and the spacing between the edges of adjacent concave holes is controlled to be 0.3 to 1.8 mm; the depth of the two concave holes is especially 0.1 to 0.18 mm.

[0022] The total area of ​​the first and second concave holes accounts for 15% to 40% of the total area of ​​the whole region: 15%, 20%, 35%, 40% are all embodiments of the present invention, which can ensure the physical non-stick performance of the whole non-stick pan and the service life of the pan.

[0023] The two types of concave holes are circular or polygonal, and a uniform polygonal convex head is prepared on the mold corresponding to the polygonal concave hole; the concave hole is gradually concave from a plane.

[0024] The pot body is in a concave shape, which is formed by pressing a flat plate with a hydraulic press. The pot body will be connected to a pot handle.

[0025] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A non-stick pan with multiple sizes and composite concave holes without coating, characterized in that: It comprises an uncoated pot body, on which the surface in contact with food is provided with evenly distributed concave holes of two or more apertures; the aperture of the first type of concave holes is 0.3-0.8mm, and the aperture of the second type of concave holes is 0.05-0.29mm; the spacing between the centers of the first type of concave holes is 0.6~8mm, and the spacing between the centers of the second type of concave holes is 0.1~0.9mm; the hole depth is 0.05-0.3mm.

2. The non-stick pan with multiple sizes of composite concave holes without coating according to claim 1 is characterized in that: The ratio of the hole area of ​​the two kinds of concave holes to the whole pot body area is 15-40%.

3. The non-stick pan with multiple sizes of composite concave holes without coating according to claim 1 is characterized in that: The two types of concave holes are circular or polygonal; the concave holes are gradually concave from a plane.

4. The non-stick pan with multiple sizes of composite concave holes without coating according to claim 1 is characterized in that: The depth of the two types of concave holes is 0.05~0.3mm.

5. The non-stick pan with multiple sizes of composite concave holes without coating according to any one of claims 1 to 4, characterized in that: The distribution of the concave holes on the bottom of the pot body is denser than that on the edge of the pot body.

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