Pot

Abstract

The utility model provides a pot. The cooker comprises a graphene composite base material and an inorganic non-stick layer, and the inorganic non-stick layer is arranged on the graphene composite base material. According to the cookware provided by the embodiment of the utility model, the graphene composite base material has good heat conductivity, so that heat can be quickly and uniformly conducted, the cookware can reach uniform temperature more quickly in the cooking process, the phenomenon of sticking to the cookware caused by non-uniform local temperature is avoided, and the cookware is more attractive in appearance. Moreover, the cookware can reach uniform temperature more quickly in the cooking process, and the heating uniformity of food materials cooked by the cookware can be improved, so that the taste of the cooked food can be improved. In addition, the inorganic non-stick layer is further arranged on the graphene composite base material, the non-stick performance is good, the pan sticking phenomenon can be further reduced, and therefore the cooking efficiency and the food taste are ensured.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, specifically to a cookware. Background Technology

[0002] When using existing cookware, it is usually necessary to preheat the pot. Heat is often transferred slowly from the middle of the bottom wall to the side wall. In this case, the heat at the bottom is significantly higher than that at the side wall. This heat distribution increases the risk of food sticking to the pot and results in uneven heating of the food, thereby reducing cooking efficiency and affecting the taste of the cooked food. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a cookware that solves the problem that existing cookware is prone to sticking during use, reducing cooking efficiency and affecting the taste of food.

[0004] According to a first aspect of the present invention, a cookware is provided, wherein the cookware comprises a graphene composite substrate and an inorganic non-stick layer, the inorganic non-stick layer being stacked on the graphene composite substrate.

[0005] According to the cookware provided in this embodiment of the invention, the graphene composite substrate has excellent thermal conductivity, enabling rapid and uniform heat conduction. This allows the cookware to reach a uniform temperature more quickly during cooking, thus avoiding sticking caused by uneven local temperatures. Furthermore, the faster and more uniform temperature reaches improves the evenness of heat distribution on the food, thereby enhancing the taste of the cooked food. In addition, the graphene composite substrate also has an inorganic non-stick layer with excellent non-stick properties, further reducing sticking and ensuring both cooking efficiency and food texture.

[0006] In some embodiments, the graphene composite substrate includes a first inorganic substrate, a graphene substrate, and a second inorganic substrate stacked sequentially, wherein the second inorganic substrate is connected to the inorganic non-adhesive layer, and the thermal conductivity of the graphene substrate is greater than that of the first inorganic substrate and the second inorganic substrate. In other embodiments, the graphene composite substrate includes an inorganic matrix layer and graphene material dispersed in the inorganic matrix layer.

[0007] In these embodiments, both of the above composite forms can effectively utilize the thermal conductivity of graphene, thereby improving the heat conduction speed and heat conduction uniformity of the cookware.

[0008] In some embodiments, the first inorganic substrate includes one of a steel substrate, an aluminum substrate, an iron substrate, a titanium-iron-aluminum composite substrate, a steel-iron-steel composite substrate, a steel-titanium composite substrate, an iron-titanium composite substrate, and a ceramic substrate; and / or, the second inorganic substrate includes one of a steel substrate, an aluminum substrate, an iron substrate, a titanium-iron-aluminum composite substrate, a steel-iron-steel composite substrate, a steel-titanium composite substrate, an iron-titanium composite substrate, and a ceramic substrate.

[0009] In these embodiments, the first inorganic substrate and the second inorganic substrate are of various types, so that multiple types of cookware can be manufactured according to actual needs, thus broadening the range of cookware.

[0010] In some embodiments, the thickness of the first inorganic substrate is d1, wherein 0.1 mm ≤ d1 ≤ 0.5 mm; and / or, the thickness of the graphene substrate is d2, wherein 0.2 mm ≤ d2 ≤ 1.0 mm; and / or, the thickness of the second inorganic substrate is d3, wherein 0.1 mm ≤ d3 ≤ 0.5 mm.

[0011] In these embodiments, the thickness of each part of the graphene composite substrate can optimize thermal conductivity to a certain extent, ensuring uniform heating of the cookware during use and preventing sticking due to excessively high or low temperatures. Furthermore, the cookware reaches a uniform temperature more quickly during cooking, improving the evenness of heating of the food and thus enhancing its texture and flavor.

[0012] In some embodiments, the height of the cookware is H, and the graphene substrate covers at least from the bottom of the cookware to the position of the pot wall corresponding to 1 / 3H of the cookware. In this way, the heat conduction performance of the cooking functional area (food action area) of the cookware is good, and the sticking phenomenon caused by uneven heating is avoided.

[0013] In some embodiments, the inorganic non-stick layer includes one of a titanium-iron alloy layer, a titanium layer, an iron layer, and an inorganic non-metallic ceramic material layer. The types of inorganic non-stick layers are diverse and can meet the cooking needs of cookware.

[0014] In some embodiments, the thickness of the inorganic non-stick layer is d4, wherein 25 micrometers ≤ d4 ≤ 100 micrometers. Such a thickness of inorganic non-stick layer can balance various aspects such as non-stick performance, wear resistance, and bonding performance with graphene composite substrate.

[0015] In some embodiments, the surface of the inorganic non-stick layer further comprises a nitriding layer, which has high hardness and strength, significantly improving the cookware's wear resistance and corrosion resistance. Furthermore, the nitriding layer effectively prevents corrosive substances from penetrating the external environment, thereby slowing down or preventing corrosion reactions and further enhancing the cookware's corrosion resistance.

[0016] In some embodiments, the inorganic non-stick layer further includes an oxide layer formed on the nitrided layer. The oxide layer possesses high hardness, significantly improving the cookware's abrasion and scratch resistance. Furthermore, the oxide layer is relatively dense, effectively isolating corrosive media from contact with the graphene composite substrate, thereby enhancing the cookware's corrosion resistance. In addition, the oxide layer remains stable at high temperatures, resisting decomposition or flaking, thus making it suitable for high-temperature cooking environments.

[0017] In some embodiments, the cookware further includes an oil sintering layer formed in the pores and / or surface of the inorganic non-stick layer, thereby further improving the non-stick properties of the cookware. Attached Figure Description

[0018] The above and other objects and features of this utility model will become clearer from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 This is a structural schematic diagram of the cookware provided according to an embodiment of the present utility model;

[0020] Figure 2 yes Figure 1 Enlarged structural diagram of point I in the medium-sized pot;

[0021] Figures 3 to 5 These are schematic diagrams of the cookware provided according to different embodiments of this utility model.

[0022] Tag name

[0023] 10. Graphene composite substrate; 11. First inorganic substrate; 12. Graphene substrate; 13. Second inorganic substrate; 20. Inorganic non-adhesive layer; 21. Nitriding layer; 22. Oxidation layer. Detailed Implementation

[0024] The following detailed descriptions are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but may be altered as will become clear upon understanding this disclosure, except for operations that must occur in a specific order. Furthermore, for clarity and conciseness, descriptions of features known in the art may be omitted.

[0025] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, apparatus and / or systems described herein, many of which will become clear upon understanding the disclosure of this utility model.

[0026] As used herein, the term “and / or” includes any one of the associated listed items and any combination of any two or more.

[0027] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts should not be limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Thus, without departing from the teaching of the examples described herein, the first component, first assembly, first region, first layer, or first part referred to as the first component, first assembly, first region, first layer, or first part may also be referred to as the second component, second assembly, second region, second layer, or second part.

[0028] In the specification, when an element such as a layer, region, or substrate is described as being "on" another element, "connected to," or "mounted to" another element, the element may be directly "on" another element, directly "connected to," or "mounted to" the other element, or one or more other elements may be present in between. Conversely, when an element is described as being "directly on" another element, "directly connected to," or "directly mounted to" another element, no other elements may be present in between.

[0029] The terminology used herein is for describing various examples only and is not intended to limit the invention. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form as well. The terms “comprising,” “including,” and “having” indicate the presence of the described features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. The term “a plurality” represents any quantity of two or more.

[0030] The directional terms "upper," "lower," "inner," and "outer" used in this invention are all based on the cookware being in its normal operating state as a reference. This definition method will help ensure that readers or users can clearly understand the relative positional relationships of the various components and functions, and should not be construed as a limitation of this invention.

[0031] Unless otherwise defined, all terms used herein, including technical and scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains after understanding the invention. Unless expressly defined herein, terms such as those defined in a general dictionary shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field and in this invention, and shall not be interpreted in an idealized or overly formalistic manner.

[0032] Furthermore, in the description of the examples, detailed descriptions of well-known related components or functions will be omitted when it is believed that such detailed descriptions would lead to a vague interpretation of the present invention.

[0033] The following will combine Figures 1 to 5 The following describes the cookware provided in the embodiments of this utility model.

[0034] According to a first aspect of the present invention, a cookware is provided, wherein, as Figure 1 and Figure 2 As shown, the cookware includes a graphene composite substrate 10 and an inorganic non-stick layer 20, with the inorganic non-stick layer 20 stacked on the graphene composite substrate 10.

[0035] According to the cookware provided in this embodiment of the present invention, the graphene composite substrate 10 has good thermal conductivity, thus enabling rapid and uniform heat conduction. This allows the cookware to reach a uniform temperature more quickly during cooking, thereby avoiding sticking caused by uneven local temperatures and improving the uniformity of heating of the food, thus enhancing the taste of the cooked food. Furthermore, the inorganic non-stick layer 20 layered on the graphene composite substrate 10 ensures good non-stick properties of the cookware, further reducing sticking and ensuring both cooking efficiency and food taste.

[0036] In this invention, the graphene composite substrate 10 can be configured in various ways. In some embodiments, the graphene composite substrate 10 has a layered composite form, i.e., a multilayer structure formed by alternating graphene layers and other material layers. In other embodiments, the graphene composite substrate 10 has a graphene-doped composite form, i.e., graphene material is uniformly dispersed in an inorganic matrix layer. Both of these composite forms can effectively utilize the thermal conductivity of graphene, thereby improving the heat conduction speed and uniformity of the cookware.

[0037] According to some embodiments of this application, the graphene composite substrate 10 includes a first inorganic substrate 11, a graphene substrate 12, and a second inorganic substrate 13 stacked sequentially. The outer surface of the first inorganic substrate 11 serves as the outer wall surface of the cookware. The second inorganic substrate 13 is connected to the inorganic non-stick layer 20. The thermal conductivity of the graphene substrate 12 is greater than that of the first inorganic substrate 11 and the second inorganic substrate 13. In these embodiments, the graphene substrate 12 is placed between the first inorganic substrate 11 and the second inorganic substrate 13. It can also be understood that the graphene composite substrate 10 includes a layered composite structure formed by stacking the first inorganic substrate 11, the graphene substrate 12, and the second inorganic substrate 13. Here, the graphene substrate 12 serves as the heat-conducting layer in the layered composite structure, utilizing the high thermal conductivity of graphene to obtain a cookware with rapid and uniform heat distribution. The graphene substrate 12 is formed by pressing a graphene sheet.

[0038] According to some embodiments of the present invention, the graphene composite substrate 10 includes an inorganic matrix layer and graphene material dispersed in the inorganic matrix layer. Here, the graphene material can be in the form of particles, strips, etc., and is uniformly dispersed in the inorganic matrix layer, which can be a metal layer or a ceramic layer.

[0039] The graphene composite substrate 10 with a layered composite structure will be described in detail below.

[0040] In some embodiments, the graphene composite substrate 10 has a layered composite structure with each layer tightly bonded together, thereby enabling better heat transfer and absorption to improve the heat conduction speed and heat conduction uniformity of the cookware.

[0041] In some embodiments, the thermal conductivity of the graphene composite substrate 10 is between 200 W / m·K and 3500 W / m·K. The thermal conductivity between each layer can be set within a certain range, thus improving the overall thermal conductivity of the graphene composite substrate 10 by utilizing the thermal conductivity of each layer. As a specific example, the thermal conductivity of the graphene substrate 12 is between 800 W / m·K and 5000 W / m·K, the thermal conductivity of the first inorganic substrate 11 is between 15 W / m·K and 240 W / m·K, and the thermal conductivity of the second inorganic substrate 13 is between 15 W / m·K and 240 W / m·K.

[0042] In some embodiments, the total thickness of the graphene composite substrate 10 is 0.9 mm to 2.0 mm. This thickness of the graphene composite substrate 10 can balance multiple aspects such as the strength, weight, and heat transfer efficiency of the resulting cookware. Furthermore, the graphene composite substrate 10 has a certain thickness, making it easier to withstand the process requirements of subsequent treatments such as nitriding and oxidation. For example, during cookware manufacturing, if the thickness of the graphene composite substrate 10 is too thin, it is easily deformed by high temperatures during nitriding; if the thickness of the graphene composite substrate 10 is too thick, the resulting cookware will be too heavy and its heat conduction will be affected.

[0043] Furthermore, the thickness of the first inorganic substrate 11 is d1, wherein 0.1 mm ≤ d1 ≤ 0.5 mm, the thickness of the graphene substrate 12 is d2, wherein 0.2 mm ≤ d2 ≤ 1.0 mm, and the thickness of the second inorganic substrate 13 is d3, wherein 0.1 mm ≤ d3 ≤ 0.5 mm.

[0044] In these embodiments, the thickness of each portion of the graphene composite substrate 10 can optimize thermal conductivity to a certain extent, ensuring uniform heating of the cookware during use and preventing sticking due to excessively high or low temperatures. Furthermore, the cookware reaches a uniform temperature more quickly during cooking, improving the evenness of heating of the food and thus enhancing its texture and flavor.

[0045] In some embodiments, the first inorganic substrate 11 includes one of a steel substrate, an aluminum substrate, an iron substrate, a titanium-iron-aluminum composite substrate, a steel-iron-steel composite substrate, a steel-titanium composite substrate, an iron-titanium composite substrate, and a ceramic substrate. The second inorganic substrate 13 includes one of a steel substrate, an aluminum substrate, an iron substrate, a titanium-iron-aluminum composite substrate, a steel-iron-steel composite substrate, a steel-titanium composite substrate, an iron-titanium composite substrate, and a ceramic substrate.

[0046] In these embodiments, the first inorganic substrate 11 and the second inorganic substrate 13 are of various types, so that multiple types of cookware can be manufactured according to actual needs, thus broadening the range of cookware.

[0047] As a specific example, the graphene composite substrate 10 is a layered composite structure consisting of an inner stainless steel layer, a graphene substrate 12, and an outer stainless steel layer. Here, the inner stainless steel layer can be made of high-quality food-grade stainless steel, thus ensuring excellent corrosion resistance and a certain degree of non-stickness, while meeting food safety standards. The outer stainless steel layer can be made of high-strength stainless steel, thus providing good impact resistance and corrosion resistance, protecting the cookware from wear and corrosion during daily use.

[0048] According to this invention, the graphene substrate 12 is not only disposed on the bottom of the cookware, but also extends to cover the pot wall area. In some embodiments, the height of the cookware is H, and the graphene substrate 12 extends from the bottom of the cookware to at least 1 / 3H of the pot wall. This ensures good heat conduction in the cooking functional area (food contact area) of the cookware, preventing sticking due to uneven heating.

[0049] During use, when the cookware is placed on a heat source, it absorbs heat starting from the center of the bottom of the cookware. The first inorganic substrate 11 absorbs the heat and transfers it to the graphene substrate 12, which then rapidly transfers the absorbed heat to the bottom wall and surrounding area of ​​the cookware. This improves the conduction efficiency, allowing the cookware to reach a uniform temperature more quickly during cooking and reducing the occurrence of hot and cold spots. This achieves efficient heat conduction, uniform temperature distribution, and physical temperature control, thereby ensuring cooking efficiency and food taste.

[0050] In some embodiments, the graphene substrate 12 completely covers the bottom and walls of the pot, which enables better heat distribution and simplifies the manufacturing process of the cookware.

[0051] The cookware of this invention allows heat to be directly and efficiently transferred from the center of the bottom of the cookware to all areas of the cookware through the graphene substrate 12, improving cooking efficiency and the evenness of heating of the food, thus enhancing both cooking efficiency and the taste of the cooked food. During continuous heating, the graphene substrate 12 also evens out the temperature difference between the bottom and the walls of the pot, achieving rapid and uniform heat conduction, further improving cooking efficiency and the taste of the food.

[0052] According to this invention, the inorganic non-stick layer 20 is a non-stick layer formed of inorganic materials, possessing excellent non-stick properties and preventing cookware from sticking after use. Furthermore, the inorganic non-stick layer 20 has high strength, hardness, and good corrosion resistance and high-temperature resistance, thus enhancing the overall durability of the cookware, extending its service life, and reducing the frequency of replacement.

[0053] In some embodiments, the inorganic non-stick layer 20 includes one of a titanium-iron alloy layer, a titanium metal layer, and an iron metal layer. It should be noted that, in this invention, the titanium-iron alloy layer, titanium layer, iron layer, and inorganic non-metallic ceramic material layer are all layers formed using corresponding existing titanium-iron alloys, titanium, or iron materials.

[0054] In these embodiments, the inorganic non-stick layer 20 is of various types to meet the cooking needs of cookware.

[0055] In some embodiments, the thickness of the inorganic non-stick layer 20 is d4, wherein 25 micrometers ≤ d4 ≤ 100 micrometers. Such a thickness of inorganic non-stick layer 20 can balance various aspects such as non-stick performance, wear resistance, and bonding performance with graphene composite substrate 10.

[0056] According to a first aspect of this invention, when the inorganic non-stick layer 20 is a metal layer (titanium layer, iron layer, or titanium-iron alloy layer), the surface of the inorganic non-stick layer 20 further has a nitrided layer 21. For example... Figure 3 As shown, the cookware includes a graphene composite substrate 10 and an inorganic non-stick layer 20 formed on the graphene composite substrate 10. The surface of the inorganic non-stick layer 20 also has a nitrided layer 21.

[0057] According to a second aspect of the present invention, when the inorganic non-stick layer 20 is a metal layer (titanium layer, iron layer, or titanium-iron alloy layer), the surface of the inorganic non-stick layer 20 has a nitriding layer 21, and the surface of the nitriding layer 21 also has an oxide layer 22. Figure 4 As shown, the cookware includes a graphene composite substrate 10 and an inorganic non-stick layer 20. The surface of the inorganic non-stick layer 20 has a nitrided layer 21, and the surface of the nitrided layer 21 also has an oxide layer 22.

[0058] The cookware provided in the first embodiment of this utility model will be described in detail below with reference to the embodiments.

[0059] According to this utility model, the nitriding layer 21 is a nitride generated by the reaction of the inorganic non-stick layer 20 with nitrogen. Specifically, the cookware with the inorganic non-stick layer 20 is exposed to a nitrogen-containing atmosphere such as nitrogen or ammonia. At high temperature, the metal (iron and / or titanium) in the inorganic non-stick layer 20 reacts chemically with nitrogen, thereby forming a nitriding film on the surface of the inorganic non-stick layer 20, which improves the strength and hardness, thus ensuring that the cookware has excellent corrosion resistance and wear resistance.

[0060] In some embodiments, the nitrided layer 21 has a certain depth, which can improve the corrosion resistance and hardness of the obtained cookware without affecting the performance of the graphene composite substrate 10 (excessive nitriding of the substrate will make it brittle). As an example, the formation depth of the nitrided layer 21 is d5, wherein 12 micrometers ≤ d5 ≤ 25 micrometers.

[0061] According to this invention, a cookware having an inorganic non-stick layer 20 is subjected to nitriding treatment to give the surface of the inorganic non-stick layer 20 a nitrided layer 21. Specifically, the cookware having the inorganic non-stick layer 20 is placed in a nitriding furnace, and the temperature of the nitriding furnace is set to 450℃-560℃. At the same time, nitrogen gas is introduced for 3-4 hours. The nitrogen atoms will chemically react with the metal elements on the surface of the inorganic non-stick layer 20 to generate hard compounds such as iron nitride (Fe3N), thereby obtaining a cookware having a nitrided layer 21 with a thickness of 12-25 micrometers.

[0062] In these embodiments, through nitriding treatment, a dense nitrided layer 21 is formed on the surface of the inorganic non-stick layer 20. This nitrided layer 21 has high hardness and strength, which can significantly improve the wear resistance and corrosion resistance of the cookware. In addition, the nitrided layer 21 can effectively prevent corrosive substances from the external environment from penetrating, thereby slowing down or preventing corrosion reactions and further improving the corrosion resistance of the cookware.

[0063] The cookware provided in the second embodiment of this utility model will be described in detail below with reference to the embodiments.

[0064] According to an embodiment of this application, the inorganic non-stick layer 20 has a nitrided layer 21 and an oxide layer 22. The nitrided layer 21 is disposed on the surface of the inorganic non-stick layer 20, and the oxide layer 22 is disposed on the nitrided layer 21 and serves as the surface layer of the cookware. The oxide layer 22 has high hardness, which can significantly improve the wear resistance and scratch resistance of the cookware. In addition, the oxide layer 22 is relatively dense, which can effectively isolate the contact between corrosive media and the graphene composite substrate 10, thereby improving the corrosion resistance of the cookware. Furthermore, the oxide layer 22 remains stable at high temperatures and is not prone to decomposition or peeling, thus making it suitable for high-temperature cooking environments.

[0065] It should be noted that, according to the second aspect embodiment of the present invention, apart from the addition of an oxide treatment layer 22 compared to the first aspect embodiment, other aspects can be found in the relevant description of the first aspect embodiment of the present invention. The differences will be described in detail below, while the similarities will not be repeated.

[0066] In some embodiments, the oxide layer 22 has a certain depth. On the one hand, this improves the wear resistance of the oxide layer 22 without affecting the basic properties of the substrate, and also controls costs. On the other hand, it allows the formation of a black oxide layer in the presence of iron in the inorganic non-stick layer 20, giving the cookware an overall black appearance and enhancing its aesthetics and texture. As an example, the formation depth of the oxide layer 22 is d6, where 15 micrometers ≤ d6 ≤ 30 micrometers.

[0067] It should be noted that the present invention does not have any special requirements on the content of each component of the oxide layer 22 after oxidation treatment. Those skilled in the art can obtain the oxide layer 22 according to the present invention by performing oxidation treatment on the nitriding layer 21 for a certain period of time under the guidance of the present invention and at a certain oxygen atom concentration.

[0068] According to some embodiments of the present invention, the cookware also includes an oil sintering layer formed in the pores and / or surface of the inorganic non-stick layer 20, thereby further improving the non-stick performance of the cookware.

[0069] The manufacturing method of cookware includes an oil coating and sintering step. Specifically, a layer of mixed oil can be evenly coated on the nitrided layer 21 of the nitrided cookware, followed by drying and oil removal, and then sintering at a temperature of 250℃-300℃. This step is repeated two or more times. After oxidation treatment, oil coating and sintering can also be performed again. In this way, an oil sintering layer will be formed on the pores and / or surface of the inorganic non-stick layer 20, thereby further improving the non-stick performance of the cookware and ensuring the cooking quality of the cookware.

[0070] According to some other embodiments of this utility model, such as Figure 5 As shown, the graphene composite substrate 10 has an uneven structure on its bonding surface with the inorganic non-stick layer 20. The inorganic non-stick layer 20 is disposed on the uneven structure and can form a surface with oil-retaining grooves 23. This type of cookware can retain oil on its surface to further improve its non-stick performance. In addition, the surface of the inorganic non-stick layer 20 with oil-retaining grooves 23 can reduce the contact area between the spatula and the inner wall of the cookware, thereby increasing its service life and enhancing the non-stick effect.

[0071] Here, the uneven structure on the graphene composite substrate 10 can be obtained by etching. According to the cooking method of this application, the uneven structure on the inner surface of the substrate can be prepared by etching, laser engraving, stamping, etc. For example, a 5000T stamping machine is used to stamp one side of a circular sheet to obtain an uneven structure of a preset size.

[0072] In some embodiments, the height of the protrusion is H1, where 80 micrometers ≤ H1 ≤ 200 micrometers; the width of the protrusion is W1, where 0.3 millimeters ≤ W1 ≤ 3 millimeters. The depth of the groove is H2, where 80 micrometers ≤ H2 ≤ 200 micrometers; the width of the groove is W2, where 0.3 millimeters ≤ W2 ≤ 3 millimeters. This uneven structure allows the inorganic non-stick layer 20 formed thereon to have suitable oil-retaining grooves 23, thereby improving the non-stick performance of the cookware and ensuring the cooking quality of the cookware.

[0073] According to this invention, the strong thermal conductivity of graphene enables the cookware to achieve rapid and uniform temperature distribution during heating, reducing the preheating time in the early stages of cooking and creating a physical temperature control effect. At the same time, uniform heating helps the food to be heated evenly during cooking, avoiding local overcooking or undercooking, thereby improving the cooking quality of the cookware.

[0074] While the embodiments of the present invention have been described in detail above, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope thereof. However, it should be understood that, in the view of those skilled in the art, these modifications and variations will still fall within the spirit and scope of the embodiments of the present invention as defined in the claims.

Claims

1. A pan, characterized in that The pot comprises: A graphene composite substrate (10); An inorganic non-stick layer (20) is laminated on the graphene composite substrate (10).

2. The pan of claim 1, wherein The graphene composite substrate (10) comprises a first inorganic substrate (11), a graphene substrate (12) and a second inorganic substrate (13) which are laminated in sequence, the second inorganic substrate (13) is connected with the inorganic non-stick layer (20), the thermal conductivity of the graphene substrate (12) is greater than the thermal conductivity of the first inorganic substrate (11) and the second inorganic substrate (13) respectively.

3. The pan of claim 2, wherein The first inorganic substrate (11) comprises one of a steel substrate, an aluminum substrate, an iron substrate, a titanium-iron-aluminum composite substrate, a steel-iron-steel composite substrate, a steel-titanium composite substrate, an iron-titanium composite substrate and a ceramic substrate; and / or, The second inorganic substrate (13) comprises one of a steel substrate, an aluminum substrate, an iron substrate, a titanium-iron-aluminum composite substrate, a steel-iron-steel composite substrate, a steel-titanium composite substrate, an iron-titanium composite substrate and a ceramic substrate.

4. The pan of claim 2, wherein The thickness of the first inorganic substrate (11) is d1, wherein 0.1 millimeter≤d1≤0.5 millimeter; and / or, the thickness of the graphene substrate (12) is d2, wherein 0.2 millimeter≤d2≤1.0 millimeter; and / or, the thickness of the second inorganic substrate (13) is d3, wherein 0.1 millimeter≤d3≤0.5 millimeter.

5. The pan of claim 2, wherein The height of the pot is H, and the graphene substrate (12) covers at least 1 / 3H of the pot wall position corresponding to the pot bottom of the pot.

6. The pan of claim 1, wherein The graphene composite substrate (10) comprises an inorganic matrix layer and a graphene material dispersed in the inorganic matrix layer.

7. The pan of claim 1, wherein The inorganic non-stick layer (20) comprises one of a titanium-iron alloy layer, a titanium layer, an iron layer and an inorganic non-metal ceramic material layer.

8. The pan of claim 1, wherein The thickness of the inorganic non-stick layer (20) is d4, wherein 25 microns≤d4≤100 microns.

9. The pan of claim 1, wherein The surface layer of the inorganic non-stick layer (20) further has a nitriding treatment layer (21).

10. The pan of claim 9, wherein The inorganic non-stick layer (20) further comprises an oxidation treatment layer (22) formed on the nitriding treatment layer (21).

11. The pan of any one of claims 1 to 10, wherein, The pot further comprises a grease sintering layer formed on the pores and / or surface of the inorganic non-stick layer (20).

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