CN212546564U

CN212546564U - Physical non-stick pan with concave-convex structure

Info

Publication number: CN212546564U
Application number: CN202020613803.5U
Authority: CN
Inventors: 王科
Original assignee: Zhejiang Bach Kitchenware Co ltd
Current assignee: Zhejiang Kangbach Technology Co ltd
Priority date: 2020-04-07
Filing date: 2020-04-22
Publication date: 2021-02-19
Anticipated expiration: 2030-04-22
Also published as: CN111387795A; CN111493648A; CN111493648B

Abstract

The utility model belongs to the field of kitchen supplies, in particular to a physical non-stick pan with a concave-convex structure, which comprises a pan body and is characterized in that the inner surface of the pan body forms a concave-convex structure, the concave-convex structure comprises convex ribs protruding from the inner surface of the pan and a concave area formed by the convex ribs in a surrounding way, and the physical non-stick layer is at least arranged on the inner surface of the pan body of the concave area; set up concave-convex structure, the bead protection sets up the on-stick layer in the depressed area, reduces the shovel and directly rubs with the on-stick layer, extension pot body on-stick effect.

Description

Physical non-stick pan with concave-convex structure

Technical Field

The utility model belongs to the kitchen supplies field, concretely relates to physics non-stick pan with concave-convex structure.

Background

At present, the conventional non-stick pan needs to be coated with a chemical non-stick coating on the inner surface of the pan, the chemical non-stick coating is easy to decompose and lose efficacy at high temperature, and the coating can be quickly damaged when a metal shovel is used. In order to make the non-stick pan have characteristics such as difficult sticking, easy washing, fast average heating, there are multiple solutions on the market at present. For example, CN201020591079.7 is a representative solution in which a plurality of grooves are arranged on the top surface of the pan bottom to form a texture, and a teflon non-stick layer is arranged in the grooves. And CN201310455227.0, the arrangement of groove lines is deeply designed, the length, the width and the height of the groove lines and the size and the height of the convex points are determined, non-stick paint is sprayed on the base, and then the surface of the pan body is further polished to form a final product.

Although the above solutions achieve the non-stick effect to a certain extent, the same problems exist, and the non-stick coatings made of chemical materials are used. As is known, the chemical non-stick coating of the non-stick pan is easy to lose the non-stick property or fall off when cooking at high temperature, thereby causing the problems of sticking the pan to fried food, eating the chemical coating by mistake and the like.

Therefore, manufacturers of non-stick pans give up the solution of providing a chemical non-stick layer to achieve the non-stick effect, and achieve the non-stick effect in the direction of physical non-stick. The non-stick layer is designed by taking the lotus leaf effect as a principle, and is particularly prominent; the lotus leaf effect is also called as self-cleaning effect and is mainly applied to the surface of an object to realize the water and oil proofing effect, particularly, the lotus leaf effect is based on the principle that the upper surface of lotus leaves is full of a great number of mastoids, the average size of the mastoids is about 53-57 micrometers, the lotus leaf effects are also formed by gathering together micro-protrusions with the size of 6-13 micrometers, the surfaces of the mastoids are full of more mastoids with smaller sizes, the average size of the mastoids is about 6-8 micrometers, the average height of the mastoids is about 11-13 micrometers, the average distance of the mastoids is about 19-21 micrometers, and the tops of the mastoids are flat and slightly sunken in the. This papillary structure is difficult to detect with the naked eye and with ordinary microscopy, and is often referred to as a multiple nanometer and micrometer-scale ultrastructure. The large and small mastoids and the protrusions are just like small hill bags which are arranged on the surface of the lotus leaf and are raised one by one, and the sunken parts between the small hill bags are filled with air, so that an extremely thin air layer with the thickness of only nanometer level is formed on the surface close to the leaf surface. The minimum diameter of the water drop is 1-2 mm (1 mm =1000 microns), which is much larger than the mastoid on the surface of the lotus leaf, so that after rainwater falls on the leaf surface, the rainwater can only form a plurality of points of contact with the top end of the small hill bag on the leaf surface through a layer of extremely thin air, and thus the rainwater cannot infiltrate the surface of the lotus leaf. The water drops form a spheroid under the action of the surface tension of the water drops, and the water balls adsorb dust in rolling and roll out of the leaf surfaces, so that the effect of cleaning the leaf surfaces is achieved.

However, the structure is applied to the surface of the non-stick pan by light, and the formation of a physical non-stick layer is far from sufficient. Because the lotus leaves can form an extremely thin air layer in a normal-temperature environment, and water drops dropping on the lotus leaves are also dropped on the lotus leaves at a normal-temperature state or even at a low temperature, but the non-stick pan needs to be further heated, the temperature of the pan body of the non-stick pan can continuously rise and even reach more than 250 ℃, and therefore, the non-stick effect cannot be completely achieved when the structure is applied to the non-stick pan.

Therefore, the scheme of physical non-stick is further optimized on the basis of the lotus leaf effect principle, the characteristics of the use environment of the non-stick pan can be effectively combined, and the non-stick pan in a physical non-stick mode is designed.

In addition, if it is single will set up the non-stick that still is not enough lasting for a long time on pot body surface with the non-stick mode of physics alone, because when carrying out the operation at every turn, the slice needs to relapse with pot surperficial friction many times, then long-time friction then wears the non-stick layer of physics, and then can't reach the effect of not sticking for a long time, this problem also needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pot body which can protect the physical non-stick layer from being damaged and can achieve the lasting non-stick effect.

In order to achieve the above object, the main technical solution of the present invention is to provide a physical non-stick pan with a concave-convex structure, including a pan body, and a serial communication port, the inner surface of the pan body forms an evenly distributed concave-convex structure, the concave-convex structure includes a convex edge protruding from the inner surface of the pan and a concave area surrounded by the convex edge, the physical non-stick layer is at least disposed on the inner surface of the pan body of the concave area. Under the scheme, as the physical non-stick layer is at least arranged on the inner surface of the pot body in the depressed area, and the convex edge has a height difference with the depressed area, when the turner is repeatedly scraped, the turner can only be positioned on the surface of the convex edge; the physical non-stick layer in the concave area is protected by the ribs, the physical non-stick layer is prevented from being worn, the long-term non-stick effect is favorably realized, and the physical non-stick layer comprises a lotus leaf surface structure in the lotus leaf effect principle mentioned in the background technology.

In some embodiments, the sidewall of the rib of the recessed region also has a physical non-stick layer thereon; the structure is added, the non-stick effect is ensured under the concave-convex structure, and if the structure is not arranged, the side walls can be stuck.

In some embodiments, the physical non-stick layer comprises a rough surface at least in the micron order, and an oxide film of a nano-scale rough porous structure is further formed on the rough surface; the micro and nano micro rough film layer has the functions of oil storage and oil locking when being actually used for cooking, thereby realizing the function of physical non-stick; the aperture of the oxide film can contract and expand along with the change of the heating temperature, and when the pot is heated by pork or animal fat or oil for use, the aperture of the oxide film expands along with the rise of the temperature of the pot body and contracts along with the fall of the temperature of the pot body; further, when a user heats the pot body, the pore diameter of the oxidation film is expanded, so that the grease can conveniently enter and exit; when the pot body is stopped to be heated, the temperature of the pot body is gradually cooled, the aperture of the oxidation film is shrunk, and grease entering the aperture is locked, so that the oil locking function is realized.

The prior art has already explained the deficiency of the existing physical non-stick principle in the heating state; on the basis that the lotus leaves are not physically stuck, the scheme combines the hydrophobic effect after the oil locking state; the physical non-stick effect is achieved in the true sense.

In some embodiments, the rough surface is formed by a plurality of at least micro-scale papillae, wherein at least micro-scale should be interpreted as micro-scale or nano-scale.

In some embodiments, the hardness of at least the surface layer of the rough surface is HV 400-1100; on one hand, the scraping abrasion of the turner to the pan body is reduced as much as possible when the pan is not stuck, and on the other hand, the abrasion of rough surfaces caused by brushing of pan washing tools such as steel wire balls is prevented.

In some embodiments, the area of the recessed region is 80% to 95% of the area of the entire concave-convex structure, and the area of the rib is 5% to 20% of the area of the entire concave-convex structure. Although the physical non-stick layer in the recessed area is protected by the ribs from being shoveled or worn away; but the tops of the ribs are not provided with the non-stick layer. Therefore, the reasonable arrangement of the convex ribs and the concave areas accounts for the percentage of the whole concave-convex structure area, and if the convex ribs occupy larger area, the effect of the non-stick pan is reduced; if the occupied area of the depressed area is larger, the protection of the depressed area by the convex edge is reduced, and especially in the process of brushing the pot all the year round by a steel wire ball, the physical non-stick layer in the depressed area is gradually damaged. This part overall arrangement has guaranteed promptly that the bead setting can protect the physics not sticky layer, does not influence the non-stick pan effect simultaneously.

In some embodiments, the concave depth of the concave area is 0.01-0.13 mm, if the concave depth is too deep, the concave depth is large in the frying process, sticky food materials (such as eggs) can be caused, part of the concave area is deep, and a high fall is formed between the concave area and the food materials on the convex edges, so that the food is separated; part of the food material is remained in the depressed area and can not be shoveled out.

In some embodiments, the pan body is a single or multi-layer composite structure.

The utility model has the advantages that:

1. set up concave-convex structure, the bead protection sets up the on-stick layer in the depressed area, reduces the shovel and directly rubs with the on-stick layer, extension pot body on-stick effect.

2. The lotus leaf-like surface structure combines the environment of the non-stick pan, and micro air is stored in the micro-rough oxidation film, so that the hydrophobic effect is achieved.

3. When the non-stick pan is maintained, the oxidation film of the non-stick pan can realize the oil locking function, and the inner surface of the pan body after the non-stick pan is maintained still has the hydrophobic property and the physical non-stick function similar to that of lotus leaves without sticking water even if the inner surface is cleaned by neutral detergent.

4. The chemical non-stick coating is omitted, so that the non-stick pan is healthier and more sanitary when in use.

Drawings

Figure 1 is a schematic structural view of an embodiment of the present invention,

figure 2 is a schematic view of the relief structure in combination with a roughened surface of the embodiment of figure 1,

figure 3 is a schematic structural view of the nano-scale asperities on the mastoid of the embodiment of figure 1,

figure 4 is a schematic view of the pot body of the embodiment of figure 1 in a multilayer structure,

in the figure: the pot comprises a pot body 1, a concave-convex structure 11, convex ribs 111, a concave area 112, an inner layer operation layer 12, an intermediate heat conduction layer 13, an outer layer heated layer 14, mastoid 2 and nano-scale roughness a.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

The first embodiment is as follows:

referring to fig. 1 to 4 of the drawings attached to the specification of the present invention, according to the present invention, a physical non-stick pan with a concave-convex structure is illustrated, the kind of non-stick pan includes a saucepan, a frying pan, a milk pan, etc., the present embodiment uses the frying pan as an example, the non-stick pan includes a pan body 1, the pan body 1 can be single layer or multi-layer, the material can adopt iron or stainless steel when the pan body 1 is single layer, the alloy elements in the stainless steel are elements such as Cr, Ni, Ti, Mn, N, Nb, Mo, Si, Cu, etc., wherein the main alloy element is Cr. For example, as shown in fig. 1 and 2, the pot body 1 is a single layer and comprises an inner working layer 12. When the pan body 1 is a multilayer, the material may be iron or stainless steel or a composite material, but at least the inner surface of the pan body 1 is made of iron or stainless steel in a single layer or in multiple layers, for example, as shown in fig. 3, the pan body 1 is a multilayer structure and includes, from inside to outside, an inner operation layer 12, an intermediate heat conduction layer 13 and an outer heat receiving layer 14 in sequence, so that the surface material of at least the inner operation layer 12 is made of iron or stainless steel, and in addition, the surface material of the pan body 1 cannot be made of an aluminum alloy; the inner surface of the pot body 1 is provided with a physical non-stick layer, the physical non-stick layer comprises a rough surface at least in a micron scale, and at least in the micron scale, the rough surface is interpreted as a micron scale or a nanometer scale; an oxide film with a nano-scale rough porous structure is further formed on the rough surface, and the micro-and nano-scale micro-rough film layers have the oil storage and locking effects when being actually used for cooking, so that the physical non-sticking function is realized; it is to be noted that the nano-scale roughness formed by the oxide film is mainly generated by oxide particles generated by the oxidation process. Such as an oxide (iron oxide) of an iron pan, an oxide film (mainly containing chromium trioxide, etc.) of stainless steel, the pore diameter of which is capable of shrinking and expanding with a change in a heating temperature, because the oxide film is formed of a base metal, is integrated with the base metal, is firmly bonded to the base, and further, the oxide film is excellent in heat resistance.

Specifically, the rough surface is composed of a plurality of at least micron-sized mastoids 2, the hardness of at least the surface layer of the rough surface reaches HV 400-1100, the inner surface of the pot body 1 forms uniformly distributed concave-convex structures 11, each concave-convex structure 11 comprises a convex rib 111 protruding from the inner surface of the bottom wall of the pot body and a concave area 112 formed by enclosing the convex rib 111, the physical non-stick layer is at least arranged on the inner surface of the pot body of the concave area 112, the side wall of the convex rib 111 of the concave area 112 is also provided with a physical non-stick layer, the non-stick effect of the structure under the concave-convex structure is increased, and if the non-stick layer is not arranged, the side wall can be stuck; the arrangement of the convex edges 111 is to protect the physical non-stick layer on the inner surface of the pot body of the concave area 112, because if the convex edges 111 are not provided, the turner can directly and repeatedly perform contact friction on the physical non-stick layer during cooking, and the rough surface is worn by long-time operation, so that the non-stick effect cannot be continued, the area of the concave area 112 is 80% -95% of the area of the whole concave-convex structure 11, the area of the convex edges 111 is 5% -20% of the area of the whole concave-convex structure 11, the concave depth of the concave area 112 is 0.01-0.13 mm, in the embodiment, the preferred concave depth is 0.05-0.06 mm, if the concave depth is too deep, in the cooking process, the concave depth is large, which may cause sticky food materials (such as eggs), and part of the concave area is deep, and forms a higher drop with the food materials on the convex edges, so as to separate food; part of the food materials are remained in the concave area and cannot be shoveled out; in summary, under the scheme, the physical non-stick layer is at least arranged on the inner surface of the pot body in the depressed area, and the convex edge has a height difference with the depressed area, so that the spatula can only be positioned on the surface of the convex edge when repeatedly scraping, and the non-stick layer in the depressed area is protected by the convex edge, the physical non-stick layer is prevented from being worn, and the long-term non-stick effect is favorably realized.

When a user uses pork or animal fat or oil for the first time to heat the pot, the pore diameter of the oxidation film expands along with the rise of the temperature of the pot body and contracts along with the fall of the temperature of the pot body 1; further, when a user heats the pot body 1, the pore diameter of the oxidation film is expanded, so that the grease can conveniently enter and exit; when the pot body 1 stops being heated, the temperature of the pot body 1 is gradually cooled, the aperture of the oxidation film is shrunk, and grease in the inlet hole is locked, so that the oil locking function is realized. The prior art has already explained the deficiency of the existing physical non-stick principle in the heating state; on the basis that the lotus leaves are not physically stuck, the oil-water repellent effect after the oil locking state is combined; the physical non-stick effect is achieved in the true sense.

It is particularly pointed out that the current experiment finds that the structure is adopted; the oil locking can be realized by the iron pan and the stainless steel pan; but the attempt on the aluminum pot cannot be realized, and the hard anode oxidation is adopted on the aluminum pot, so that micron-scale and nano-scale rough surfaces can be generated, but the non-stick effect is poor; so that non-sticking can only be achieved by the coating.

Example two:

an embodiment of a method for manufacturing a non-stick pan is described, comprising the following steps:

(1) manufacturing a pot body 1: the plate is made into a pan body 1;

(2) a sand blasting procedure: selecting an abrasive, and spraying the abrasive to the surface of the pot body 1 by taking compressed air as power, so that a rough surface with at least micron level is formed on the surface of the pot body 1;

(3) surface treatment: the surface of the pot body 1 is hardened and oxidized, and an oxide film with a nano-scale rough porous structure is further formed on the rough surface.

(4) Polishing: mechanically polishing a preset area of the inner surface of the pot body 1, removing rough surfaces at convex edges 111 in the concave-convex structure 11, and reserving rough surfaces on a concave area 112 in the concave-convex structure 11, so as to obtain the pot body 1 which is not stuck to the pot; the non-stick layer is not arranged at the top of the convex edge; the partial layout ensures that the arrangement of the convex ribs can protect the physical layer from being occupied, and meanwhile, the effect of the non-stick pan is not influenced.

(5) Cleaning and packaging procedures: and (3) removing polishing wax from the pot body 1 by using ultrasonic waves, cleaning the pot body by using deionized hot water, riveting a handle and packaging a finished product.

Specifically, in the present embodiment, (1) the manufacturing of the pot body 1 further includes:

(1.1) treatment of the relief structure 11: uniformly distributed concave-convex structures 11 are formed on the surface of the iron or stainless steel plate through chemical etching or mechanical pressing; the concave depth is 0.01-0.13 mm, the preferable concave depth is 0.05-0.06 mm, if the concave depth is too deep, food can remain in the concave area 112 during the frying process and can not be shoveled out; the cross section of the convex rib 111 of the concave-convex structure 11 can be semicircular or rectangular; forming a concave-convex structure 11 on the surface of the iron plate or the stainless steel plate by a chemical etching or engraving or rolling method, wherein the engraving comprises cutting engraving and laser engraving, the mechanical pressing has wide application range, and the laser engraving can be used for manufacturing more precise patterns; after the chemical etching or mechanical pressing process, the area of the convex rib 111 is 5% -20% of the area of the whole concave-convex structure 11, the area of the concave region 112 is 80% -95% of the area of the whole concave-convex structure 11, and the two area ratio ranges are only the conditions generated by the embodiment, and generally, the area ratio range of the convex rib 111 is reduced as much as possible, and the area ratio range of the concave region 112 is increased; when the metal shovel is used for cooking, the hard physical non-stick layer at the concave part can not be damaged, so that the pan can provide a long-term physical non-stick effect.

(1.2) stretching step: utilizing a drawing machine to draw the iron plate or the stainless steel plate forming the concave-convex structure 11 into a pot body 1, and trimming and smoothing the edge of the pot, wherein the thickness of the pot body 1 is 0.3-8 mm, and preferably the thickness of the pot body 1 is 0.6-5 mm.

In this example, (2) the blasting step: the method comprises the steps of selecting 36-130-mesh abrasive materials, using 0.4-0.8 MPa compressed air as power, spraying the abrasive materials to the inner surface of a pot body 1 by using high-speed spraying equipment (such as a spray gun) to thoroughly remove impurities on the inner surface of the pot body 1, and enabling the surface of the pot body 1 to form a rough surface consisting of a plurality of at least micron-sized papillae, wherein the abrasive materials are brown corundum or white corundum.

In this embodiment, (3) the surface treatment further includes:

(3.1) hardening step: cleaning the pot body 1 after the sand blasting procedure is finished, putting the pot body 1 which is cleaned into a heat treatment furnace filled with gas or liquid, and carrying out heat treatment for 0.5-24 hours in an environment with the temperature of 400-650 ℃ so as to form a hardened layer with the hardness of HV 400-1100 and the thickness of 3-35 microns on the surface of the pot body 1;

(3.2) an oxidation step: and (3) carrying out oxidation treatment on the pot body 1 meeting the hardening standard, namely putting the pot body 1 with the hardened layer into a treatment furnace filled with liquid or gas, and oxidizing for 0.5-2 hours in an environment of 400-500 ℃, so that an oxidation film with a nano-scale rough porous structure is further formed on the rough surface of the pot body 1.

It is further noted that the hardening process and the oxidizing process may be performed in the same furnace, or may be performed separately; in addition, after the hardening process and the oxidation process are completed, the surface of the pot body 1 is observed through a microscope, so that a micron-scale rough surface with the thickness of 3-35 microns and the hardness of HV 400-1100 is formed on the surface of the pot body, an oxide film with a nano-scale rough porous structure is further formed on the rough surface, the surface structure becomes a physical non-adhesive layer with non-adhesive property, and the rough surface and the oxide film with the nano-scale rough porous structure also exist on the surface of the convex edge 111.

In this embodiment, in order to remove the rough surface on the protruding rib 111, the polishing step in step (4) of the manufacturing method of the non-stick pan specifically includes: in order to not damage the micro-nano structure of the inner surface of the pot, the inner surface of the pot is polished by a soft cloth wheel, and then the rough surface of the convex edge 111 is polished, so that the surface of the convex edge 111 becomes relatively smooth; and the polishing of the outer surface of the pot adopts a 60-320 mesh nylon wheel to polish the outer surface of the pot, so that the pot body 1 can be effectively prevented from slipping on the gas stove.

For review:

from the above-mentioned first embodiment and the second embodiment, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the pan body 1 is dark gray or black after being hardened and oxidized by heat treatment, which is favored by general consumers; however, the pot is easy to stick to a pot in common metal base material pots, and therefore the physical non-stick layer of hardened micron-scale or nanometer-scale rough surfaces is further arranged on the inner surface of the pot, after a pot is heated by pork or animal oil or fat or oil for the first time of use by a consumer, the temperature of the pot body 1 rises, the pore diameter of the nanometer-scale rough oxidation film expands along with the temperature, the pork or animal oil or fat enters from the pore, when the pot body 1 stops being heated, the temperature of the pot body 1 is gradually cooled, the pore diameter of the nanometer-scale rough oxidation film shrinks along with the temperature, the oil is locked in the oil, the oil storage effect is further generated, when the pot body 1 needs to be heated for cooking next time, the oil enters and exits again, the rough surfaces of the micron-scale or nanometer-scale structures are combined with the oil locking effect, the phenomenon that dishes stick to the pot is avoided, and the. The inner surface of the pot body after the pot is raised has hydrophobicity similar to that of lotus leaves without water and physical non-stick function even if the inner surface of the pot body is cleaned by neutral detergent.

The utility model discloses on the basis of the bionical principle at the lotus leaf effect, the characteristics that combine 1 service environment of pot body again carry out the global design, through form micron order or nanometer coarse structure at 1 internal surface of pot body and combine the oxide film that has the lock oil function of the coarse porous structure of further formation nanometer on the rough surface, make it have and need not spraying chemical coating and also can reach non-sticky effect, also changed for a long time the view that the industry considers the bottom of a boiler level and smooth as far as can not be sticky at the bottom of a boiler, the non-stick effect that can not arrive has been obtained to the expectation, effectively solved the industry and relied on chemical coating to promote the non-stick effect and can't solve the problem that non-stick property became invalid or easily drop when high temperature cooks dish for a long time, make people. It should be pointed out very much, the utility model discloses except that the creative bionical principle of not being stained with water according to the lotus leaf that has proposed, through forming submillimeter level, micron order and/or the many first coarse structures of nanometer at 1 internal surface of pot body, make it have and need not spraying chemical coating and have inadhesive effect promptly, the utility model discloses the technological parameter combination of processes such as sandblast, thermal treatment and oxidation that mention is the important factor of the best inadhesive effect of guarantee, and the combination of technological parameter is also one of the utility model discloses a point. The formation of surface micron order and nanometer level rough surface and the formation of sclerosis layer all need work such as strict control sandblast, heat treatment each item process parameter can reach the non-stick performance of ideal, the utility model provides a process parameter is that utility model people just grope out through a large amount of experiments, the correction that relapse, and technical personnel in the field rely on imagination or simple reasoning can obtain not. To achieve the best effect, the process parameter combination of the utility model is also needed to be used.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims

1. The utility model provides a physical non-stick pan with concave-convex structure, includes the pot body, its characterized in that, pot body internal surface forms evenly distributed's concave-convex structure, concave-convex structure includes the bead of protruding in pot internal surface and closes the depressed area that constitutes by the bead is enclosed, physical non-stick layer sets up at least on the pot internal surface of depressed area.

2. The physically nonstick pan with concave-convex structure as claimed in claim 1, wherein the side wall of the rib is also provided with a physically nonstick layer.

3. The physical non-stick pan with concave-convex structure according to claim 1, wherein the physical non-stick layer comprises a rough surface with at least micron-scale, and an oxide film with nano-scale rough porous structure is further formed on the rough surface; the micro and nano micro rough film layer has the functions of oil storage and oil locking when being actually used for cooking, thereby realizing the function of physical non-stick.

4. The physically nonstick pan according to claim 3, wherein the rough surface is composed of a plurality of papillae having a size of at least micrometer.

5. The physical nonstick pan according to claim 3, wherein the rough surface has a hardness of HV400 to 1100 at least in a surface layer thereof.

6. The physical non-stick pan with concave-convex structure according to claim 1, wherein the area of the concave area is 80% to 95% of the area of the whole concave-convex structure, and the area of the convex rib is 5% to 20% of the area of the whole concave-convex structure.

7. The physical non-stick pan with the concave-convex structure according to claim 1, wherein the concave depth of the concave region is 0.01-0.13 mm.

8. The physical non-stick pan with the concavo-convex structure of claim 1, wherein the pan body has a single-layer or multi-layer composite structure.