Non-stick plate assembly, cooking utensil and cooking equipment

Abstract

The utility model discloses a non-stick plate assembly, a cooking utensil and cooking equipment. The non-stick plate assembly comprises a base plate layer, the concave-convex layer is arranged on one side of the base plate layer, the concave-convex layer comprises at least one bulge and at least one groove, and the bulges and the grooves are alternately arranged; in the section perpendicular to the non-stick plate assembly, the projection width of the top of the protrusion on the plane where the substrate layer is located is d, the projection width of the top of the groove on the plane where the substrate layer is located is k, and d / (d + k) is 20%-60%. According to the non-stick plate assembly, a non-stick coating does not need to be arranged on the non-stick plate assembly, only the concave-convex structure (namely the protrusions and the grooves which are alternately arranged) is arranged on one side of the base plate layer, the non-stick performance of the plate can be improved under the condition of little oil, and the non-stick cooking effect of food materials is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of household electrical appliances, and in particular relates to a non-stick plate component, a cooking utensil and a cooking device. Background Art

[0002] As people's demand for easy-to-clean cooking utensils continues to increase, it is common for frying pans to use non-stick coatings, such as PTFE coatings, PFA coatings, ceramic coatings, and other non-stick coatings, or to perform special treatments on the surface of the pan to form a non-stick coating. However, the above non-stick coatings have low hardness, poor wear resistance, and are not resistant to metal spatulas and steel wool. Therefore, the non-stick coatings are easily damaged during long-term use, resulting in a significant reduction in their non-stick performance. Therefore, it is necessary to further improve the existing non-stick sheet components. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the purpose of the utility model is to provide a non-stick plate assembly, a cooking utensil and a cooking device. The non-stick plate assembly proposed by the utility model does not need to be provided with a non-stick coating, and only a concave-convex structure (i.e., protrusions and grooves arranged alternately) is provided on one side of the substrate layer, which can improve the non-stick performance of the plate in a low-oil scenario and achieve a non-stick cooking effect for food.

[0004] In one aspect of the present invention, the present invention provides a non-stick plate assembly. According to an embodiment of the present invention, the non-stick plate assembly includes:

[0005] substrate layer;

[0006] A concavo-convex layer, wherein the concavo-convex layer is arranged on one side of the substrate layer, the concavo-convex layer comprises at least one protrusion and at least one groove, and the protrusions and the grooves are arranged alternately;

[0007] In a cross section perpendicular to the non-stick sheet component, the projection width of the top of the protrusion on the plane where the substrate layer is located is d, and the projection width of the top of the groove on the plane where the substrate layer is located is k, satisfying d / (d+k) is 20% to 60%.

[0008] According to the non-stick plate assembly of the embodiment of the utility model, there is no need to set a non-stick coating on the non-stick plate assembly, and only a concave-convex structure (i.e., alternating protrusions and grooves) is set on one side of the substrate layer. This can improve the non-stick performance of the plate in a low-oil scenario and achieve a non-stick cooking effect for food.

[0009] In addition, the non-stick sheet material assembly according to the above embodiment of the utility model may also have the following additional technical features:

[0010] In some embodiments of the present invention, d / (d+k) is 30% to 50%.

[0011] In some embodiments of the present invention, a projection width d of the top of the protrusion on the plane where the substrate layer is located is 0.1 mm-1.5 mm.

[0012] In some embodiments of the present invention, a projection width d of the top of the protrusion on the plane where the substrate layer is located is 0.2 mm-0.7 mm.

[0013] In some embodiments of the present invention, the depth h of the groove is 40 μm-150 μm.

[0014] In some embodiments of the present invention, the depth h of the groove is 40 μm-80 μm.

[0015] In some embodiments of the present invention, in a cross section perpendicular to the non-stick sheet material assembly, the top of the protrusion is parallel to the plane where the substrate layer is located.

[0016] In some embodiments of the present invention, in a cross section perpendicular to the non-stick plate component, the groove is arc-shaped or trapezoidal.

[0017] In some embodiments of the present invention, the central angle α of the arc-shaped groove is not greater than 180°.

[0018] In some embodiments of the present invention, the bottom angle β of the inverted trapezoidal groove is not less than 130°.

[0019] In some embodiments of the present invention, the structures of the plurality of protrusions are the same, and the structures of the plurality of grooves are the same.

[0020] In some embodiments of the present invention, the thickness of the substrate layer is 1.5 mm-2.5 mm.

[0021] In some embodiments of the present invention, the substrate layer includes a 430 stainless steel layer, an aluminum layer and a 304 stainless steel layer stacked in sequence, and the concave-convex layer is arranged on a side of the 304 stainless steel layer away from the aluminum layer.

[0022] In the second aspect of the utility model, the utility model provides a cooking utensil. According to an embodiment of the utility model, the cooking utensil includes the non-stick plate assembly described in the above embodiment. Therefore, under the premise that the non-stick coating is not provided in the cooking utensil, the non-stick performance of the cooking utensil can be improved in a low-oil scenario. When cooking food with the cooking utensil, the food will not stick to the pan, which improves the taste and appearance of the food, while also meeting the need for low oil.

[0023] In addition, the cooking appliance according to the above embodiment of the utility model may also have the following additional technical features:

[0024] In some embodiments of the present invention, the container comprises a bottom wall and a side wall, wherein the bottom wall and the side wall are connected to form a receiving space; the bottom wall comprises the non-stick sheet material assembly described in the above embodiments; and / or the side wall comprises the non-stick sheet material assembly described in the above embodiments.

[0025] In the third aspect of the present invention, the present invention provides a cooking device. According to an embodiment of the present invention, the cooking device has the cooking utensil of the above embodiment. The cooking device has all the features and advantages of the cooking utensil described above, which will not be repeated here. In general, the cooking device can improve the non-stick performance of the cooking device in a low-oil scenario.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 It is a cross-sectional schematic diagram of a non-stick plate assembly according to an embodiment of the utility model;

[0029] Figure 2 It is a cross-sectional schematic diagram of a non-stick plate assembly according to another embodiment of the utility model;

[0030] Figure 3 It is a top view of the non-stick plate assembly according to an embodiment of the utility model.

[0031] Reference numerals:

[0032] 100-substrate layer, 110-304 stainless steel layer, 120-aluminum layer, 130-430 stainless steel layer, 200-concave-convex layer, 201-convexity, 202-concave. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] In one aspect of the present invention, the present invention provides a non-stick plate assembly. Figure 1 -Attached Figure 3The non-stick plate assembly includes: a substrate layer 100; a concavo-convex layer 200, the concavo-convex layer 200 is arranged on one side of the substrate layer 100, the concavo-convex layer 200 includes at least one protrusion 201 and at least one groove 202, and the protrusions 201 and the grooves 202 are arranged alternately; in a cross section perpendicular to the non-stick plate assembly, the projection width of the top of the protrusion 201 on the plane where the substrate layer 100 is located is d, and the projection width of the top of the groove 202 on the plane where the substrate layer 100 is located is k, and d / (d+k) is 20% to 60%, for example, it can be 20%, 30%, 40%, 50%, 60%, etc. Therefore, the non-stick plate assembly does not need to be provided with a non-stick coating, and only a concavo-convex structure (i.e., protrusions 201 and grooves 202 arranged alternately) is provided on one side of the substrate layer 100, which can improve the non-stick performance of the plate in a less oil scenario and achieve a non-stick cooking effect of food.

[0039] The principle by which the non-stick plate assembly proposed in the present invention can achieve the above beneficial effects is described in detail below:

[0040] In the related art, non-stick coatings are often used to improve the cleanability of cooking utensils. However, non-stick coatings are easily damaged during long-term use, resulting in a significant reduction in their non-stick properties.

[0041] In order to solve the above problems, the utility model provides a new type of non-stick plate assembly, which does not need to be provided with a non-stick coating, and only a concave-convex structure (i.e., protrusions 201 and grooves 202 arranged alternately) is provided on one side of the substrate layer 100, which can improve the non-stick performance of the cookware in the scenario of less oil, and achieve the cooking effect of non-stick food. The mechanism is as follows: based on the cooking scenario of the cookware, there is generally water or oil, and a liquid film is formed between the concave-convex structure. When the food slides on the concave-convex structure during the cooking heating process, the fluid in the concave-convex structure forms a convergent gap due to factors such as uneven heating, partial point contact expansion, and end surface unevenness. The formed fluid dynamic pressure weakens the friction of the friction surface, thereby achieving a non-stick effect in the scenario of less oil.

[0042] Specifically, the mechanism of achieving non-stick food in low-oil cooking scenarios is as follows: during the cooking process, the temperature of the plate rises rapidly, and the oil in the groove expands due to the heat, moving from the bottom of the groove along the groove surface to the top of the groove. During cooking, there is relative movement between the food and the top of the protrusion, so the oil that has just reached the top of the groove will form an oil film between the top of the protrusion and the food, thereby forming fluid dynamic pressure lubrication, achieving the effect of non-stick food and the top of the protrusion.

[0043] In the prior art, non-stick cookware is generally coated with non-stick coatings such as Teflon and ceramics, but with long-term use, the coating is easy to peel off and affect the non-stick performance, and the detached non-stick material is mixed into the cooking ingredients and eaten, which may have adverse effects on human health; when using conventional plates (without grooves) for cooking, it is generally chosen to add enough cooking oil to achieve the purpose of non-stick. The non-stick plate assembly with a concave-convex structure provided by the utility model does not need to be coated with a non-stick coating, and can also form a fluid dynamic pressure lubrication non-stick cooking effect in a low-oil cooking scene. Experiments have shown that compared with conventional plates without grooves, when the non-stick plate assembly with a concave-convex structure of the utility model is used for cooking, the amount of oil added is reduced by 1 / 2 to 1 / 3, or if the ingredients themselves are rich in oil, cooking can be completed without adding additional cooking oil, thereby achieving a healthy and low-oil cooking scene and meeting the user's healthy cooking needs.

[0044] Among them, d / (d+k) represents the proportion of the protruding part to the whole substrate, and the larger the d / (d+k), the larger the proportion of the protruding part to the whole substrate. The inventor of the utility model found that when the ratio of d / (d+k) is in the range of 20% to 60%, during the cooking process of the non-stick plate assembly, the liquid in the groove 202 expands due to heat and is squeezed by the surroundings to form dynamic pressure, and the liquid area in the groove 202 is sufficient, and the final dynamic pressure can effectively lubricate the food, thereby greatly reducing the friction coefficient of the plate interface and greatly improving the non-stick performance of the plate; at the same time, compared with the plate without concave-convex structure, the non-stick plate assembly of the utility model reduces the amount of oil added during cooking by 1 / 2 to 1 / 3, and can achieve a better cooking non-stick effect. When d / (d+k) is less than 20%, when the liquid is heated, due to the small number of protruding structures, it cannot be squeezed by the surroundings in the groove 202 to form sufficient dynamic pressure, and the cooking effect is poor under the same amount of oil, and the friction coefficient of the plate interface is large, and the non-stick performance of the plate is poor. When d / (d+k) is greater than 60%, although the liquid in the groove 202 can form dynamic pressure when heated, due to the insufficient liquid area in the groove 202, the overall dynamic pressure cannot fully lubricate the food, and the cooking effect is not significantly improved with the same amount of oil. In addition, the friction coefficient of the plate interface is large, and the non-stick performance of the plate is poor.

[0045] It should be noted that the lower the friction coefficient of the board surface, the easier it is for food to slide on the board surface, and the better the non-stick performance.

[0046] As some preferred schemes, the d / (d+k) ratio is in the range of 30% to 50%. By limiting the d / (d+k) ratio within the above range, the friction coefficient of the plate interface can be further significantly reduced in a low-oil scenario, further significantly improving the non-stick performance of the plate.

[0047] It should be noted that the cross section perpendicular to the non-stick plate assembly refers to the cross section perpendicular to the large surface of the non-stick plate assembly. The top of the protrusion 201 refers to the side of the protrusion 201 away from the substrate layer 100. The top of the groove 202 refers to the side of the groove 202 away from the substrate layer 100.

[0048] It can be understood that when the top of the protrusion 201 is parallel to the plane where the substrate layer 100 is located, the projection width d of the top of the protrusion 201 on the plane where the substrate layer 100 is located is the width of the top of the protrusion 201. When the line connecting the tops of the grooves 202 is parallel to the plane where the substrate layer 100 is located, the projection width k of the top of the grooves 202 on the plane where the substrate layer 100 is located is the width of the line connecting the tops of the grooves 202.

[0049] It should also be noted that the concave-convex layer 200 is disposed on the side of the non-stick plate component facing the food to be cooked.

[0050] According to some specific embodiments of the utility model, the projection width d of the top of the protrusion 201 on the plane where the substrate layer 100 is located can be 0.1mm-1.5mm, for example, it can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm and 1.5mm. By limiting the projection width d of the top of the protrusion 201 on the plane where the substrate layer 100 is located within the above range, the friction coefficient of the interface of the sheet material can be further greatly reduced in the scenario of less oil, and the non-stick performance of the sheet material can be further greatly improved. As some preferred solutions, the projection width d of the top of the protrusion 201 on the plane where the substrate layer 100 is located can be 0.2mm-0.7mm.

[0051] According to some more specific embodiments of the present invention, refer to the attached Figure 1 and attached Figure 2 The depth h of the groove 202 can be 40 μm-150 μm, for example, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, etc. By limiting the depth h of the groove 202 to the above range, it can avoid the situation that the groove 202 is insufficient in oil storage and cannot provide sufficient oil lubrication for the non-stick cooking of the plate, and it can also avoid the situation that the protruding parts are easily worn flat; in addition, it can also avoid the situation that food residues are carbonized in the groove 202 after high-temperature cooking, causing difficulty in cleaning. As some preferred solutions, the depth h of the groove 202 can be 40 μm-80 μm.

[0052] According to some other specific embodiments of the utility model, in the cross section perpendicular to the non-stick sheet assembly, the top of the protrusion 201 is parallel to the plane where the substrate layer 100 is located. Therefore, while improving the non-stick performance of the sheet, it also improves the convenience of the non-stick sheet assembly when used in cooking utensils, and at the same time avoids the situation where the protruding parts are easily worn flat.

[0053] According to some other specific embodiments of the present invention, in a cross section perpendicular to the non-stick plate component, the groove 202 may be in an arc shape (as shown in the attached figure). Figure 1 as shown) or inverted trapezoid (as shown in the attached Figure 2 As shown in the figure, while improving the non-stick performance of the plate, it can also prevent food residues from being carbonized in the groove 202 after high-temperature cooking, which makes cleaning difficult. During cooking, as the temperature of the plate rises rapidly, the oil in the groove expands due to the heat and moves from the bottom of the groove along the arc surface or trapezoidal surface to the top of the groove. During cooking, there is relative movement between the food and the top of the protrusion, so the oil that has just reached the top of the groove will form an oil film between the top of the protrusion and the food, thereby forming fluid dynamic pressure lubrication, achieving the effect of non-stick between the food and the top of the protrusion.

[0054] According to some other specific embodiments of the present invention, the central angle α of the arc-shaped groove may be no greater than 180°, whereby the resistance of the oil in the groove moving toward the top of the groove is small, which is conducive to the formation of an oil film.

[0055] According to some other specific embodiments of the present invention, the bottom angle β of the inverted trapezoidal groove is not less than 130°, whereby the resistance of the oil in the groove moving toward the top of the groove is small, which is conducive to the formation of an oil film.

[0056] As some specific examples, the structures of the plurality of protrusions 201 are all the same, and the structures of the plurality of grooves 202 are all the same.

[0057] According to some other specific embodiments of the present invention, the thickness of the substrate layer 100 can be 1.5mm-2.5mm, for example, it can be 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, etc. Therefore, the substrate layer 100 has a suitable thickness, which is conducive to improving cooking efficiency.

[0058] In the embodiments of the present invention, the material of the substrate layer is not particularly limited, and those skilled in the art can select it according to actual needs. As a specific example, refer to the attached Figure 1 and attached Figure 2 The substrate layer 100 includes a 430 stainless steel layer 130 , an aluminum layer 120 and a 304 stainless steel layer 110 stacked in sequence, and the concavo-convex layer 200 is disposed on a side of the 304 stainless steel layer 110 away from the aluminum layer 120 .

[0059] In the second aspect of the utility model, the utility model provides a cooking utensil. According to an embodiment of the utility model, the cooking utensil includes the non-stick plate assembly described in the above embodiment. Therefore, under the premise that the non-stick coating is not provided in the cooking utensil, the non-stick performance of the cooking utensil can be improved in the scenario of less oil. When cooking food with the cooking utensil, the food will not stick to the pan, which improves the taste and appearance of the food, and at the same time can meet the demand of less oil.

[0060] According to some specific embodiments of the utility model, the above cooking utensil includes a container bottom wall and a container side wall, the container bottom wall and the container side wall are connected to form a storage space, oil or water and food to be cooked can be placed in the storage space; the container bottom wall includes the non-stick plate assembly of the above embodiment; and / or, the container side wall includes the non-stick plate assembly of the above embodiment, and the food in the storage space is cooked by heating the non-stick plate assembly of the cooking utensil. Since at least a part of the bottom wall and / or at least a part of the side wall of the above cooking utensil adopts the non-stick plate assembly of the utility model, the non-stick performance of the cooking utensil is improved in the scenario of less oil. It should be noted that the concave-convex layer is arranged on the side of the cooking utensil facing the food to be cooked.

[0061] According to an embodiment of the utility model, the cooking utensil is selected from at least one of a frying pan, a frying pan, a stew pot, a milk pan, an electric rice cooker, and a pressure cooker. Wherein, when the cooking utensil is an electric rice cooker or a pressure cooker, the concave-convex layer is arranged on the inner surface of the electric rice cooker or the pressure cooker. Thus, most cooking needs can be met. In addition to the aforementioned structure, the above cooking utensil may also include the structure that a conventional cooking utensil should have. Taking a frying pan as an example, it may also include a handle, etc.

[0062] Those skilled in the art can understand that the cooking device can further include a heating base, and the heating base includes a functional module that can make the heating element component generate heat. According to a specific embodiment of the utility model, the functional module can be an electromagnetic induction coil, and the electromagnetic induction coil can form a magnetic field to generate eddy currents in the heating layer / or the heating layer, thereby generating heat and cooking the food in the accommodating space.

[0063] In the third aspect of the present invention, the present invention provides a cooking device. According to an embodiment of the present invention, the cooking device has the cooking utensil of the above embodiment. The cooking device has all the features and advantages of the cooking utensil described above, which will not be repeated here. In general, the cooking device can improve the non-stick performance of the cooking device in a low-oil scenario.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0065] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0066] The embodiments of the present invention are described in detail below. It should be noted that the embodiments described below are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. In addition, if not explicitly stated, all reagents used in the following embodiments are commercially available, or can be synthesized according to this article or known methods, and the reaction conditions not listed are also easily obtained by those skilled in the art.

[0067] Example 1

[0068] This embodiment provides a non-stick plate component, and the preparation method thereof includes:

[0069] An etching mask was prepared to form a specific pattern for chemical reagent etching, and d=0.4 mm, k=0.7 mm, and d / (d+k)=36% were set.

[0070] A composite substrate of 430 stainless steel layer / aluminum layer / 304 stainless steel layer with a thickness of 2 mm is provided, wherein the thickness ratio of the 430 stainless steel layer, the aluminum layer and the 304 stainless steel layer is 0.6:0.8:0.6. Firstly, the composite substrate is subjected to alkali washing, and an etching solution with a concentration of 1.01 mol / L of HCl and a concentration of 1.23 mol / L of FeCl3 is prepared, and one side of the 304 stainless steel layer of the composite substrate is placed in the etching solution at 35° C. for chemical etching, and the etching time is 30 minutes. After the reaction is completed, the test piece is taken out, and the black residue on the surface is rinsed off with deionized water, and dried to obtain a non-stick plate component.

[0071] Example 2

[0072] This embodiment provides a non-stick plate component, and the preparation method thereof includes:

[0073] The difference between this embodiment and embodiment 1 is that d=0.5 mm, k=0.75 mm, d / (d+k)=40% are set, and the etching time is 28 minutes. The other contents are the same as those in embodiment 1.

[0074] Example 3

[0075] The difference between this embodiment and embodiment 1 is that d=0.6 mm, k=0.6 mm, d / (d+k)=50% are set, and the etching time is 23 minutes. The other contents are the same as those in embodiment 1.

[0076] Comparative Example 1

[0077] The plate is a composite substrate of 430 stainless steel layer / aluminum layer / 304 stainless steel layer with a thickness of 2 mm, and the surface is not etched.

[0078] Comparative Example 2

[0079] The difference between this embodiment and embodiment 1 is that d=0.4 mm, k=3.6 mm, d / (d+k)=10%, and the etching time is 45 minutes. The other contents are the same as those in embodiment 1.

[0080] Comparative Example 3

[0081] The difference between this embodiment and embodiment 1 is that d=0.4 mm, k=0.2 mm, d / (d+k)=67%, and the etching time is 15 minutes. The other contents are the same as those in embodiment 1.

[0082] Performance Testing

[0083] Friction coefficient test:

[0084] The friction coefficient tester was used, the wear part was a GCr15 ball with a diameter of 6.35 mm, the test pressure was 25 N, and the friction coefficient of the 304 stainless steel layer of Examples 1-3 and Comparative Examples 1-3 on the side away from the aluminum layer was tested, and 2 mL of edible oil was applied on the surface. The results are shown in Table 1.

[0085] Non-stick performance test:

[0086] The temperature of the plates prepared in Examples 1-3 and Comparative Examples 1-3 was respectively raised to 150-170° C., eggs were beaten, and the egg whites were scooped out with a silicone spatula after solidification. This was repeated three times, and the non-stick level was determined. The results are shown in Table 1.

[0087] Judgment criteria for non-stick grade:

[0088] Level 1: Scrape out without damage, leaving no residue; Level 2: Cannot be scraped out without damage, and the residue can be removed with a wet rag; Level 3: Cannot be scraped out without damage, and the residue cannot be removed with a wet rag.

[0089] Table 1

[0090] Friction coefficient Non-stick performance Example 1 0.03 Level 1 Example 2 0.03 Level 1 Example 3 0.05 Level 1 Comparative Example 1 0.12 Level 3 Comparative Example 2 0.11 Level 3 Comparative Example 3 0.09 Level 2

[0091] As can be seen from Table 1, Examples 1-3 all have a concavo-convex structure on the surface of the 304 stainless steel layer, and d / (d+k) is in the range of 20%-60%. Therefore, the friction coefficients of Examples 1-3 are all low, and the non-stick properties are all level 1.

[0092] In comparative example 1, no concavo-convex structure is provided on the surface of the 304 stainless steel layer, so the friction coefficient of comparative example 1 is higher, and the non-stick performance is level 3.

[0093] Comparative Examples 2 and 3 both have concavo-convex structures on the surface of the 304 stainless steel layer, but d / (d+k) is not within the range of 20%-60%, so the friction coefficients of Comparative Examples 2 and 3 are relatively high, and the non-stick performance of Comparative Example 2 is level 3, and the non-stick performance of Comparative Example 3 is level 2. It can be seen that d / (d+k) that is too large or too small is not conducive to reducing the friction coefficient of the plate and is not conducive to improving the non-stick performance.

Claims

1. A non-stick sheet assembly, characterized in that: include: substrate layer; A concavo-convex layer, wherein the concavo-convex layer is arranged on one side of the substrate layer, the concavo-convex layer comprises at least one protrusion and at least one groove, and the protrusions and the grooves are arranged alternately; In a cross section perpendicular to the non-stick sheet component, the projection width of the top of the protrusion on the plane where the substrate layer is located is d, and the projection width of the top of the groove on the plane where the substrate layer is located is k, satisfying d / (d+k) is 20% to 60%.

2. The non-stick sheet material assembly according to claim 1, characterized in that: The projection width d of the top of the protrusion on the plane where the substrate layer is located is 0.1 mm-1.5 mm.

3. The non-stick sheet material assembly according to claim 1, characterized in that: The depth h of the groove is 40 μm-150 μm.

4. The non-stick sheet material assembly according to any one of claims 1 to 3, characterized in that: In a cross section perpendicular to the non-stick sheet component, the top of the protrusion is parallel to the plane where the substrate layer is located.

5. The non-stick sheet material assembly according to claim 4, characterized in that: In a cross section perpendicular to the non-stick plate component, the groove is in an arc shape or an inverted trapezoidal shape.

6. The non-stick sheet material assembly according to claim 5, characterized in that: The central angle α of the arc-shaped groove is not greater than 180°.

7. The non-stick sheet material assembly according to claim 5, characterized in that: The bottom angle β of the inverted trapezoidal groove is not less than 130°.

8. The non-stick sheet material assembly according to claim 5, characterized in that: The structures of the plurality of protrusions are all the same, and the structures of the plurality of grooves are all the same.

9. The non-stick sheet material assembly according to any one of claims 1 to 3, characterized in that: The thickness of the substrate layer is 1.5 mm-2.5 mm.

10. The non-stick sheet material assembly according to any one of claims 1 to 3, characterized in that: The substrate layer includes a 430 stainless steel layer, an aluminum layer and a 304 stainless steel layer stacked in sequence, and the concave-convex layer is arranged on a side of the 304 stainless steel layer away from the aluminum layer.

11. A cooking utensil, characterized in that: The non-stick sheet material assembly comprises the non-stick sheet material assembly according to any one of claims 1 to 10.

12. The cooking device according to claim 11, characterized in that: It comprises a container bottom wall and a container side wall, wherein the container bottom wall and the container side wall are connected to form a containing space; The bottom wall of the container comprises the non-stick sheet material assembly according to any one of claims 1 to 10; and / or the side wall of the container comprises the non-stick sheet material assembly according to any one of claims 1 to 10.

13. A cooking device, characterized in that: A cooking utensil comprising the cooking utensil according to claim 11 or 12.

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