A coated non-stick pan
By evenly distributing concave holes on the stainless steel pot and plating copper, iron or iron nitride layers, the problem of wear of the physical non-stick layer of the existing non-stick pan is solved, achieving long-term non-stick effect and low-cost, safe and healthy material use.
Patent Information
- Application Number
- CN202420583123.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-03-25
AI Technical Summary
During long-term use of existing non-stick pans, the physical non-stick layer is prone to wear and cannot achieve long-term non-stick effect.
The concave holes are evenly distributed on the stainless steel pot and the inner surface of the pot body is plated with copper, iron or iron nitride layers. The concave hole distribution and plating are combined to improve non-stick performance.
It achieves a long-term non-stick effect on the inner surface of the pot, avoids wear of the physical non-stick layer, and has low process cost and safe and healthy materials.
Smart Images
Figure CN222693205U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the preparation of a cooking utensil, namely a pot, in particular to a coated non-stick pot. Background Art
[0002] CN 217959625 U discloses a stainless steel non-stick pan. In this solution, a plurality of grooves with uniform depths are constructed on the inner surface of a zero-coating stainless steel pan body by laser engraving. The surfaces of the grooves engraved by laser engraving are smooth, and a physical non-stick layer is constructed on the smooth groove surface. The physical non-stick layer is arranged more evenly on the groove surface, and the non-stick effect is better.
[0003] The prior art 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, allowing consumers to cook food more healthily. 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 non-stick pan 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 only a physical non-stick layer is provided on the surface of the pan body, it is not enough to achieve long-term non-stick, because each time the spatula is operated, it needs to rub against the surface of the pan 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-stick pan with a concave hole structure, especially a non-stick pan with a low-cost production and a coating.
[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a coated non-stick pan, including a pan body of stainless steel or iron or having a titanium layer, and evenly distributed concave holes are arranged on the pan body contacting with food; the first concave hole diameter is 0.3-0.8mm; the spacing between the centers of the first concave holes is 0.6-8mm; the hole depth is 0.05-0.3mm; the concave hole distribution surface of the stainless steel pan body is plated with copper, iron layer or iron nitride layer, and the coating thickness is 20-300 nanometers.
[0008] Concave holes of the second diameter are also distributed; when the diameter of the first concave holes is 0.3-0.8mm, the diameter of the second concave holes is 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.
[0009] The ratio of the hole area of the two kinds of concave holes to the whole pot body area is 15-40%.
[0010] The two types of concave holes are circular or polygonal; the concave holes are gradually concave from a plane.
[0011] The diameter of the concave hole is 0.3~0.5mm.
[0012] The food contact layer on the pot is made of stainless steel, and the back of the stainless steel is composited with an aluminum layer. Stainless steel can also be replaced by iron or titanium, especially iron pots are plated with iron nitride or copper.
[0013] The preparation of the non-stick pan of the present application is mainly the preparation of uniform concave holes. The non-coated pressed non-stick pan uses a uniform round convex head of an alloy mold (which can match the size of the pan body and the concave shape of the pan) on the inner surface of the pan body to press the titanium plate-shaped pan body with a press. The non-coated pressed non-stick pan is formed by austenitic titanium or martensitic stainless steel or titanium plate to obtain a concave pan body, or an iron pan, etc. 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 effects: the copper and iron layers can be nano-layer thick, and physical plating is used, so the coating has strong adsorption force with the pot surface, and the material is popular and cheap, no expensive materials are needed, and the process cost is not high, which is controllable for human health; and two kinds of concave holes are evenly spaced, and when frying non-noodle food, the distribution of the two kinds of concave holes makes it easier for the gas evaporated when the food is heated to expand, so that the physical anti-sticking function is better (better effect when the pot is moved or the shovel is moved), and the concave hole area accounts for 15% to 40% of the pot body area, and can be processed by sanding, polishing, etc. 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 shovel smoother when frying dishes, and use physical plating to plate iron and copper (iron nitride has a better effect and its chemical properties are more stable) layers, and the anti-sticking performance, that is, the non-stick effect, fully reaches the level of the new PTFE Teflon coating application, exceeding the titanium coating layer and the zirconium coating layer, 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 pot, and the evenly distributed concave holes 2 and 3 with the same depth are better, and the distribution of the concave holes can also be denser in the center of the pot bottom 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 method of plating copper and iron layers adopts physical evaporation source metal plating method, and directly plating copper, iron, etc. under vacuum conditions.
[0025] 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.
[0026] 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 coated non-stick pan, characterized in that: The invention comprises a pot body made of stainless steel, iron or titanium, and the surface of the pot body in contact with food is provided with evenly distributed concave holes; the diameter of the first type of concave holes is 0.3-0.8 mm; the spacing between the centers of the first type of concave holes is 0.6-8 mm; the hole depth is 0.05-0.3 mm; the concave hole distribution surface of the pot body is plated with copper, iron layer or iron nitride layer, and the coating thickness is 20-300 nanometers.
2. The coated non-stick pan according to claim 1, characterized in that: There are also concave holes of the second diameter. The diameter of the first concave holes is 0.3-0.8mm, and the diameter of the second concave holes is 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.
3. The coated non-stick pan according to claim 1, 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%.
4. The coated non-stick pan according to claim 1, characterized in that: The two types of concave holes are circular or polygonal.
5. The coated non-stick pan according to claim 1, characterized in that: The concave hole diameter is 0.3~0.5mm.
6. The coated non-stick pan according to claim 1, characterized in that: The layer on the pot body that contacts food is made of stainless steel, and the back of the stainless steel is made of a composite aluminum layer.
7. The coated non-stick pan according to claim 1, characterized in that: When the pot body is an iron pot, an iron nitride layer is plated.
8. The coated non-stick pan according to claim 1, characterized in that: The concave hole is gradually concave from the plane.