WO2022036893A1

WO2022036893A1 - Container and cooking device having same

Info

Publication number: WO2022036893A1
Application number: PCT/CN2020/128980
Authority: WO
Inventors: 周瑜杰; 万鹏; 曹达华; 杨玲; 张弘光; 王婷
Original assignee: 佛山市顺德区美的电热电器制造有限公司
Priority date: 2020-08-20
Filing date: 2020-11-16
Publication date: 2022-02-24

Abstract

A container (100) and a cooking device having same. The container (100) comprises: a body (1), the inner surface of the body (1) being provided with a recess (11), and the side wall of the recess (11) extending in a curved surface in a direction from the edge of an opening of the recess (11) to the bottom wall of the recess (11); and a coating (2), the coating (2) being provided on the inner wall surface of the recess (11).

Description

Container and cooking utensil having the same

This application is based on four Chinese patent applications with application numbers of 202010844962.0, 202021756476.5, 202021756477.X and 202021760735.1, and the application date is August 20, 2020, and claims the priority of the four Chinese patent applications. The entire contents of the application are incorporated herein by reference.

technical field

The present application relates to the technical field of household electrical appliances, and in particular, to a container and a cooking utensil having the same.

Background technique

Generally, the inner pots of frying pans, rice cookers and pressure cookers, grill pans and other utensils have non-stick coatings on the surfaces, so that consumers can easily clean them during use. However, some non-stick coatings have poor adhesion to the substrate and low surface hardness, especially when the cooking process is often scratched, which seriously reduces the service life of the coating. In order to improve the service life of the coating, a concave and convex pattern is generally prepared on the surface of the substrate, and a non-stick coating is prepared on the concave part of the pattern, and the surface of the protruding part has no coating. contact, so that the coating will not be scratched.

However, the non-stick coating formed in the recess has a low bonding force with the substrate, which leads to the frequent peeling of the coating in the recess during use by users.

SUMMARY OF THE INVENTION

The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present application is to provide a container with good bonding force between the coating and the body, which is beneficial to improve the service life of the coating.

The present application also provides a cooking utensil, comprising the above-mentioned container.

A container according to an embodiment of the present application includes: a body, an inner surface of the body is provided with a groove, and in the direction from the opening edge of the groove to the bottom wall of the groove, the groove is The side wall extends in a curved surface; the coating layer is provided on the inner wall surface of the groove.

According to the container of the embodiment of the present application, in the direction from the opening edge of the groove to the bottom wall of the groove, the side wall of the groove extends in a curved surface, so that the coating on the side wall of the groove can be reduced at least to a certain extent. On the one hand, it helps to improve the adhesion of the paint on the side wall of the groove, ensures the coverage of the paint on the side wall of the groove and the corresponding thickness, and on the other hand can reduce the paint separation caused by gravity. layer phenomenon, improve the non-stick effect.

According to some embodiments of the present application, the entire inner wall surface of the groove is a curved surface.

According to some embodiments of the present application, the coating layer does not protrude beyond the opening edge of the groove.

According to some embodiments of the present application, a side surface of the coating layer away from the inner wall surface of the groove is a curved surface.

According to some embodiments of the present application, the depth of the groove is h, and the value range of h is: 0.05-0.3 mm.

According to some embodiments of the present application, the value range of h is: 0.1-0.2 mm.

According to some embodiments of the present application, the inner surface of the body is provided with a plurality of protrusions spaced apart and protruding from the inner surface of the body, a plurality of peripheral walls of the protrusions and the inner surface of the body The grooves are defined.

According to some embodiments of the present application, the area of the top wall of the bulge is S1, the area of the bottom wall of the bulge is S2, and the ratio of S1 to S2 ranges from 2% to 40%. %.

According to some embodiments of the present application, the ratio of the S1 to the S2 ranges from 15% to 25%.

According to some embodiments of the present application, the cross-sectional area of the protrusion gradually increases in a direction from the top wall of the protrusion to the bottom wall of the protrusion.

According to some embodiments of the present application, the distance between two adjacent convex top walls is greater than the diameter of the convex top walls; and/or, two adjacent convex top walls The distance between the walls is k, and the value of k ranges from 0.1 to 0.6 mm.

According to some embodiments of the present application, the protrusion and the body are one piece.

According to some embodiments of the present application, the depth of the groove is h, the distance between the top walls of two adjacent protrusions is k, and the value of h/k ranges from 0.1 to 0.5; and/ Or, the distance between the top walls of two adjacent protrusions is k, and the value of k ranges from 0.1 mm to 0.6 mm of the container.

According to some embodiments of the present application, the longitudinal section of a portion of the coating layer located between two adjacent top walls of the protrusions is arc-shaped.

According to some embodiments of the present application, the shape of the top wall of the protrusion is a circle, the diameter of the top wall of the protrusion is d, and the value of d ranges from 0.1 mm to 0.6 mm; and/or, the The longitudinal section of the part of the groove located between two adjacent top walls of the protrusions is arc-shaped.

According to some embodiments of the present application, a portion of the inner surface of the body is concave toward a direction away from the center of the body to form the grooves, the grooves being a plurality of spaced apart.

According to some embodiments of the present application, the thickness of the coating at the bottom wall of the groove is greater than the thickness of the coating at the side wall of the groove.

According to some embodiments of the present application, the thickness of the coating layer gradually increases from the opening edge of the groove to the bottom wall of the groove.

According to some embodiments of the present application, the grooves are formed by a chemical etching process or a laser etching process.

According to some embodiments of the present application, the coating comprises multiple layers of non-stick coatings arranged in layers.

According to some embodiments of the present application, the non-stick coating is two layers and is a bottom layer and a surface layer, the bottom layer is provided on the inner wall surface of the groove, and the surface layer is provided on the surface of the bottom layer away from one side of the inner wall surface of the groove.

According to some embodiments of the present application, the bottom layer comprises: a first pigment filler, and the color tone of the bottom layer is adapted to cover the color tone of the body.

According to some embodiments of the present application, the first pigment filler is a white filler, and the white filler is at least one selected from the group consisting of titanium dioxide, titanium oxide, zinc oxide and aluminum oxide.

According to some embodiments of the present application, the top layer includes a second color filler, and the color of the top layer is different from the color of the bottom layer.

According to some embodiments of the present application, the second color filler is aluminum flake particles; and/or silver particles.

According to some embodiments of the present application, the film thickness of the bottom layer is 6-30 μm; and/or the film thickness of the surface layer is 8-20 μm.

According to some embodiments of the present application, the thickness of the bottom layer gradually increases from the opening edge of the groove to the bottom wall of the groove.

According to some embodiments of the present application, the thickness of the bottom layer of the lower portion of the side wall of the groove is the same as the thickness of the bottom layer of the bottom wall of the groove.

According to some embodiments of the present application, the container is a cookware; and/or the body is a stainless steel piece, a cast iron piece, an aluminum piece, an enamel piece or a glass piece.

According to some embodiments of the present application, the area of the side wall of the groove is larger than the area of the bottom wall of the groove.

According to some embodiments of the present application, the ratio of the area of the portion of the body not covered by the coating to the total area of the inner surface of the body ranges from 2% to 40%.

A cooking appliance according to an embodiment of the present application includes the above-mentioned container.

According to the cooking utensil of the embodiment of the present application, by arranging the above-mentioned container, in the direction from the opening edge of the groove to the bottom wall of the groove, the side wall of the groove extends in a curved surface. The flow rate of the paint on the side wall of the groove, on the one hand, helps to improve the adhesion of the paint on the side wall of the groove, and ensures the coverage and the corresponding thickness of the paint on the side wall of the groove, on the other hand, it can reduce the gravity The layering phenomenon of the coating caused by the action, and the non-stick effect is improved.

Additional aspects and advantages of the present application will be set forth, in part, from the following description, and in part will become apparent from the following description, or may be learned by practice of the present application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a partial top schematic view of a container according to some embodiments of the present application;

Fig. 2 is an enlarged view of the circled portion according to A shown in Fig. 1;

Figure 3 is a partial cross-sectional view of the container shown in Figure 1;

4 is a partial cross-sectional view of a container according to further embodiments of the present application.

Reference number:

container 100;

body 1; groove 11; protrusion 12;

Coating 2; Bottom layer 21; Surface layer 22.

detailed description

The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, but should not be construed as a limitation on the present application.

The container 100 and the cooking appliance according to the embodiments of the present application are described below with reference to FIGS. 1-4 .

As shown in FIGS. 3-4 , the container 100 according to the embodiment of the present application may include a body 1 and a coating layer 2 .

Specifically, the inner surface of the main body 1 is provided with a groove 11 , and the inner wall of the groove 11 is provided with a coating 2 . That is to say, the coating layer 2 is only provided on the inner wall surface of the groove 11, and the top wall of the protrusion 12 is not provided with the coating layer 2, so that during the use of the container 100, tools such as spatula and the protrusion 12 contact without protruding into the groove 11, so that the coating 2 is not scratched.

In the related art, in the direction from the opening edge of the groove 11 to the bottom wall of the groove 11, since the side wall of the groove 11 extends straight, a boundary edge is formed between the side wall and the bottom wall of the groove 11, When the paint is sprayed in the main body 1, the straight sidewall of the groove 11 increases the flow rate of the paint, which on the one hand leads to a shorter residence time of part of the paint on the sidewall of the groove 11. The coating 2 has a small thickness and low adhesion, on the other hand, the paint is easy to accumulate at the boundary edge, resulting in a very thick coating 2 at the boundary edge, and the accumulation leads to further flow to the paint at the center of the bottom wall of the groove 11 less, the coating 2 on the bottom wall of the groove 11 is thinner, so the adhesion between the coating 2 on the bottom wall of the main body 1 and the main body 1 is low, and after long-term use, the coating 2 on the bottom wall of the main body is prone to fall off. question.

In the present application, in the direction from the opening edge of the groove 11 to the bottom wall of the groove 11, the side wall of the groove 11 extends in a curved surface, so that the paint on the groove 11 can be reduced at least to a certain extent. The flow rate of the side wall, on the one hand, helps to improve the adhesion of the paint on the side wall surface of the groove 11, ensures the coverage of the paint on the side wall of the groove 11 and the corresponding thickness, and on the other hand can reduce the friction caused by gravity. It can improve the non-stick effect of the paint layering phenomenon.

Further, the entire inner wall surface of the groove 11 is a curved surface. Specifically, the entire inner wall surface of the groove 11 is a smooth curved surface. For example, the side wall of the groove 11 and the bottom wall of the groove 11 are smoothly transitioned, and no boundary edge is formed therebetween. By setting the entire inner wall surface of the groove 11 as a curved surface, there is no obvious dividing line between the bottom wall and the side wall of the groove 11, and the problem of boundary edges on the inner wall surface of the groove 11 is avoided. The accumulation of paint at the junction is beneficial to the leveling of the paint, and avoids the problem that the coating 2 at the junction is thicker and the coating 2 on the bottom wall of the groove 11 is thinner due to the accumulation of paint at the junction. It is beneficial to improve the bonding force between the coating 2 on the bottom wall of the groove 11 and the inner wall surface of the groove 11, thereby improving the service life of the container 100, and also helping to improve the uniformity of the thickness of the coating 2 at the bottom of the groove 11, and at the same time. The existence of hot spots caused by the accumulation of the coating 2 can be avoided, which is beneficial to improve the uniformity of the thermal conductivity of the coating 2 .

According to the container 100 of the embodiment of the present application, in the direction from the opening edge of the groove 11 to the bottom wall of the groove 11, the side wall of the groove 11 extends in a curved surface, so that the coating can be reduced at least to a certain extent. The flow velocity of the side wall of the groove 11 helps to improve the adhesion of the paint on the side wall of the groove 11 on the one hand, and ensures the coverage and the corresponding thickness of the paint on the side wall of the groove 11. The layering phenomenon of the coating caused by the action, and the non-stick effect is improved.

According to some embodiments of the present application, the coating layer 2 does not protrude beyond the opening edge of the groove 11 . In this way, the contact between the coating 2 and the spatula can be avoided, the probability of the coating 2 being scraped off can be reduced, the adhesion of the coating 2 on the groove 11 can be improved, and the coating 2 can be connected to the convex top wall above the coating 2. An air layer is formed between the layers, which improves the non-stick performance to the food, and helps to form a hot air layer above the coating layer 2 during heating, so as to promote the uniform heating of the food.

In some specific examples of the present application, the side surface of the coating layer 2 away from the inner wall surface of the groove 11 is a curved surface. Thereby, the contact between the coating 2 and the spatula and the like can be avoided, thereby improving the service life of the coating 2 .

According to some embodiments of the present application, the coating layer 2 includes multiple layers of non-stick coatings arranged in layers, and the compositions of any two adjacent non-stick coatings are different. Generally, if only one layer of non-stick coating is included in the coating 2, in order to ensure the non-stick performance, the single-layer non-stick coating must be set thicker. Under the dual action of the flow of the single-layer non-stick coating and the thicker thickness of the single-layer non-stick coating, it is easy to cause the delamination of the coating. However, according to the container 100 of the embodiment of the present application, the non-stick coating is a multi-layer non-stick coating. The flow rate of each layer of non-stick coating on the side wall of the groove 11 can be reduced, which helps to improve the adhesion of the non-stick coating in the groove 11; and the multi-layer non-stick coating helps to improve the non-stick coating. The layering phenomenon increases the uniformity of the non-stick coating, thereby further improving the non-stick performance of the coating 2 and the uniformity of thermal conductivity. In addition, when the main body 1 is made of stainless steel, it is easy to cause yellowing of the surface of the stainless steel when the non-stick coating is baked. By providing multiple layers of non-stick coatings, on the one hand, the non-stick coating can be used to effectively cover the yellowed surface of the stainless steel. On the other hand, it is beneficial to improve non-stickiness and improve user experience.

According to some embodiments of the present application, the non-stick coating has two layers and is a bottom layer 21 and a surface layer 22 , the bottom layer 21 is provided on the inner wall surface of the groove 11 , and the surface layer 22 is provided on the inner wall of the bottom layer 21 away from the groove 11 . side of the wall. Therefore, the arrangement of the two layers of non-stick coating can make each layer of non-stick coating need not be very thick, so that in the actual processing process, the flow rate of each layer of non-stick coating on the side wall of the groove 11 can be reduced. Helps to improve the adhesion of the non-stick coating in the groove 11; and the two layers of non-stick coating help to improve the delamination of the non-stick coating and increase the uniformity of the non-stick coating, thereby further improving the coating Non-stick properties of layer 2 and uniformity of thermal conductivity. In addition, when the main body 1 is made of stainless steel, it is easy to cause yellowing of the stainless steel surface when the non-stick coating is baked. By providing two layers of non-stick coatings, on the one hand, the non-stick coating can be used to effectively cover the yellowed surface of the stainless steel. On the other hand, it is beneficial to improve non-stickiness and improve user experience.

In some embodiments of the present application, the bottom layer 21 includes a first pigment filler. By adding the first pigment filler to the bottom layer 21, the bottom layer 21 can be colored, so that the color tone of the bottom layer can cover the color tone of the main body 1, avoiding The color of the main body 1 is revealed, thereby covering the yellowish stainless steel surface of the main body 1 caused by the baking of the non-stick paint, which is beneficial to improve the aesthetic appearance of the container 100 .

In some embodiments of the present application, the first pigment filler is a white filler. The white filler is at least one selected from titanium, titanium oxide, zinc oxide and aluminum oxide, that is, the white filler can be one of titanium, titanium oxide, zinc oxide and aluminum oxide, and the white filler can be titanium , two of titanium oxide, zinc oxide and aluminum oxide, the white filler can be three of titanium, titanium oxide, zinc oxide and aluminum oxide, or the white filler can be titanium, titanium oxide, zinc oxide and aluminum oxide. In order to cover the surface of the stainless steel body 1 which is yellowed when the non-stick coating is baked, white filler is added to the bottom layer 21 , which helps the bottom layer 21 to better cover the inner wall surface of the groove 11 , thereby improving the appearance of the container 100 Aesthetics.

According to some embodiments of the present application, the bottom layer 21 includes wear-resistant particles, which is beneficial to further improve the wear resistance of the bottom layer 21, thereby increasing the service life of the coating system.

Specifically, the wear-resistant particles of the bottom layer 21 are uniformly distributed in the bottom layer 21 . Therefore, it is beneficial to further improve the wear resistance of the bottom layer 21 , thereby increasing the service life of the coating layer 2 .

In some optional embodiments, the wear-resistant particles in the bottom layer 21 are at least one of Al ₂ O ₃ particles, SiO ₂ particles and SiC particles, that is, the wear-resistant particles may be Al ₂ O ₃ particles, One of SiO ₂ particles and SiC particles, or Al ₂ O ₃ particles, two of SiO ₂ particles and SiC particles, or the wear-resistant particles are Al ₂ O ₃ particles, SiO ₂ particles and SiC particles . Therefore, it is not only beneficial to improve the hardness, scratch and abrasion resistance and chemical resistance of the coating layer 2, but also the cost is low.

According to some optional embodiments of the present application, the surface layer 22 includes a second color filler. By arranging the second color filler in the surface layer 22 and the first color filler in the bottom layer 21 , the color of the surface layer 22 can be adjusted to the The bottom layer 21 is different in color. In this way, the coating 2 may exhibit the hue of the second pigment filler or an intermediate hue between the hue of the first pigment filler and the hue of the second pigment filler.

Specifically, the second color filler is aluminum flake particles and/or silver particles. That is, one of silver particles and aluminum flake particles may be added to the surface layer 22, or both of them may be added simultaneously. Specifically, silver paste and/or aluminum silver paste may be added to the coating, so that the aluminum flake particles and/or silver particles are present in the surface layer 22 after the coating is applied and cured. Therefore, by adding aluminum flake particles and/or silver particles to the surface layer 22, the surface layer 22 can have a silver-white metallic luster, which is beneficial to realize the metallic effect on the inner surface of the container 100, especially when the body 1 In the case of stainless steel, the color of the surface layer 22 can be consistent with the color of the top wall of the protrusion 12 that is not covered by the coating layer 2 in the body 1 , thereby improving the aesthetic appearance of the container 100 .

According to some optional embodiments of the present application, the bottom layer 21 includes white filler, and the surface layer 22 includes aluminum flake particles and/or silver particles. Therefore, the white filler added in the bottom layer 21 can effectively cover the inner wall surface of the groove 11, and under the dual action of the bottom layer 21 and the addition of aluminum flake particles and/or silver particles in the surface layer 22, the surface layer 22 It has a good silver-white metallic luster, so that when the body 1 is a stainless steel part, the color of the coating 2 can be consistent with the color of the top wall part of the protrusion 11 in the body 1 that is not covered by the coating 2, and then The aesthetic appearance of the container 100 can be improved.

According to some embodiments of the present application, the surface layer 22 includes wear-resistant particles, which is beneficial to further improve the wear resistance of the surface layer 22 , thereby increasing the service life of the coating system 2 .

Specifically, the wear-resistant particles of the surface layer 22 are uniformly distributed in the surface layer 22 . Therefore, it is beneficial to further improve the wear resistance of the bottom layer 21 , thereby improving the service life of the coating system 2 .

In some optional embodiments, the wear-resistant particles in the surface layer 22 are at least one of Al ₂ O ₃ particles, SiO ₂ particles and SiC particles, that is, the wear-resistant particles may be Al ₂ O ₃ particles , one of SiO ₂ particles and SiC particles, or Al ₂ O ₃ particles, two of SiO ₂ particles and SiC particles, or the wear-resistant particles are Al ₂ O ₃ particles, SiO ₂ particles and SiC. Therefore, it is not only beneficial to improve the hardness, scratch and abrasion resistance and chemical resistance of the coating 2 system, but also the cost is low.

In some embodiments of the present application, the bottom layer 21 includes a binder resin, and the binder resin is at least one selected from the group consisting of PES, PAI, PPS, PEEK and PPSU. Further, the bottom layer 21 includes a fluororesin, and the fluororesin is at least one selected from the group consisting of PFA, PTFE and EFP. Thereby, a non-stick coating with a long service life can be provided.

According to some embodiments of the present application, the surface layer 22 includes a fluororesin, and the fluororesin is at least one selected from the group consisting of PFA, PTFE, and EFP. For example, the fluororesin is PTFE. Thereby, a non-stick coating with a long service life can be provided.

In some specific examples of the present application, the film thickness of the bottom layer 21 is 6-30 μm. Further, the film thickness of the bottom layer 21 is 8 to 28 μm. Furthermore, the film thickness of the bottom layer 21 is 10-25 micrometers. For example, the film thickness of the base layer 21 is 10 μm, 12 μm, 15 μm, 18 μm, 20 μm, 22 μm, 24 μm or 25 μm. In this way, the problems of poor covering effect and poor adhesion between the bottom layer 21 and the main body 1 and between the bottom layer 21 and the surface layer 22 caused by setting the film thickness of the bottom layer 21 to be too thin are avoided. On the basis of the excellent covering effect and adhesion, the problem of cost increase caused by setting the bottom layer 21 too thick can be avoided.

According to some embodiments of the present application, the film thickness of the surface layer 22 is 8-20 μm. Further, the film thickness of the surface layer 22 is 10-20 microns. Furthermore, the film thickness of the surface layer 22 is 12-18 microns. For example, the film thickness of the surface layer 22 is 13 μm, 14 μm, 15 μm, 16 μm or 17 μm. Thus, good bonding force between the surface layer 22 and the bottom layer 21 can be ensured, and the service life of the surface layer 22 can be improved.

Specifically, the thickness of the bottom layer 21 gradually increases in the direction from the opening edge of the groove 11 to the bottom wall of the groove 11 . Therefore, the thickness of the bottom layer 21 at the bottom wall of the groove 11 is the thickest. By making the thickness of the bottom layer 21 at the bottom wall of the groove 11 thicker, it is beneficial to improve the bonding between the bottom layer 21 and the inner bottom wall of the groove 11 The force and the bonding force between the bottom layer 21 and the surface layer 22 improve the service life of the coating 2, and can improve the thermal conductivity of the bottom of the coating The overall thermal conductivity is uniform, while avoiding heat concentration on the bottom wall of the groove 11, resulting in thermal cracks in the coating 2, improving the scratch resistance of the coating 2, and at the same time improving the heat of the air above the coating 2, so that the overall The heat uniformity of the cooking surface of the vessel 100 is improved.

In some embodiments of the present application, the thickness of the bottom layer 21 of the lower part of the side wall of the groove 11 is the same as the thickness of the bottom layer 21 of the bottom wall of the groove 11 . Specifically, in the direction from the opening of the groove 11 to the bottom wall of the groove 11, the thickness of the bottom layer 21 on the upper part of the side wall of the groove 11 gradually increases, and the thickness of the bottom layer 21 on the lower part of the side wall of the groove 11 is the same as that of the groove 11. The thickness of the bottom layer 21 of the bottom wall of the groove 11 is the same. Therefore, it is beneficial to improve the bonding force between the bottom layer 21 and the inner bottom wall of the groove 11 and the bonding force between the bottom layer 21 and the surface layer 22 , and improve the service life of the coating 2 .

According to some embodiments of the present application, the thickness of the coating layer 2 at the bottom wall of the groove 11 is greater than the thickness of the coating layer 2 at the side wall of the groove 11 . Specifically, the thickness of the coating layer 2 gradually increases from the opening edge of the groove 11 to the bottom wall of the groove 11 . Therefore, the thickness of the coating layer 2 at the bottom wall of the groove 11 is the thickest, which is beneficial to improve the bonding force between the coating layer 2 and the inner bottom wall of the groove 11, and improve the service life of the coating layer 2. In addition, the thermal conductivity of the bottom of the coating 2 can be improved, so that the heat can be quickly conducted to the side wall of the groove 11 to promote the overall thermal conductivity uniformity of the coating 2, and at the same time, it can prevent the heat from being concentrated on the bottom wall of the groove 11 to cause thermal cracks in the coating 2. , the scratch resistance of the coating 2 can be improved, and at the same time, the heat of the air above the coating 2 can be increased, so that the heat uniformity of the cooking surface of the whole container 100 can be improved.

According to some embodiments of the present application, as shown in FIGS. 3-4 , the depth of the groove 11 is h, and the value range of h is: 0.05-0.3 mm. Further, the value range of h is: 0.1-0.2 mm. For example, h is 0.12mm, 0.15mm, 0.18mm or 0.19mm. Specifically, on the one hand, the protrusion 12 is opposite to the groove 11. By defining the depth h of the groove 11, the height of the protrusion 12 is defined, that is, the height of the protrusion 12 is equal to the groove depth h. The depth h of the defined groove 11 is not less than 0.05, which can avoid the problem that the coating 2 is shallow due to the small groove depth, avoid the coating 2 from being scratched, and help improve the scratch resistance of the coating 2. On the other hand, in the process of spraying the paint, it can help the paint to satisfy the wenzel model, so that the paint completely infiltrates the inner wall surface of the entire groove 11 , thereby helping to improve the bonding ability of the coating 2 and the inner wall surface of the groove 11 .

According to some embodiments of the present application, the inner surface of the body 1 is provided with a plurality of protrusions 12 that are spaced apart and protrude from the inner surface of the body 1 , and the peripheral walls of the plurality of protrusions 12 and the inner surface of the body 1 define recesses Slot 11. For example, a portion of the inner surface of the body 1 is protruded to form a plurality of spaced protrusions 12, that is, the protrusions 12 and the body 1 are integrated, and the peripheral wall of the protrusion 12 and the rest of the inner surface of the body 1 can define a concave Slot 11. Therefore, the coating 2 is not provided on the top wall of the protrusion 12, and the coating 2 is provided on the peripheral wall of the protrusion 12, that is, the side wall of the groove 11 and the bottom wall of the groove 11, so that during the use of the container 100 , tools such as a spatula are in contact with the protrusions 12 and will not protrude into the grooves 11, so that the coating layer 2 will not be scratched, the structure is simple, and the processing is convenient.

For example, the protrusions 12 extend annularly with the central axis of the body 1 as the center line, a plurality of protrusions 12 are spaced apart in the radial direction, and a groove 11 is defined between two adjacent protrusions 12 .

For another example, each protrusion 12 is cylindrical and spaced apart, and the protrusions 12 are arranged in a matrix, so that the peripheral wall of the plurality of protrusions 12 and the inner bottom wall of the main body 1 can define a groove 11 .

Specifically, the area of the top wall of the protrusion 12 is S1, the area of the bottom wall of the protrusion 12 is S2, and the ratio of S1 to S2 ranges from 2% to 40%. It can be understood that the top wall of the protrusion 12 refers to the end face of the free end of the protrusion 12 , and the end of the protrusion 12 connected to the body 1 is the bottom wall.

In the related art, in order to enhance the strength of the columnar protrusions, the diameters of the protrusions are often relatively large, so that although the protrusions can provide a certain resistance to shovels, due to the large protrusions, the area of the inner wall surface of the groove 11 is reduced. Decrease, the area of the non-stick coating decreases, and the coverage of Coating 2 decreases.

In view of this, according to the container 100 of the embodiment of the present application, the area of the top wall of the protrusion 12 is S1, the area of the bottom wall of the protrusion 12 is S2, and the ratio of S1 to S2 ranges from 2% to 40% , in order to increase the surface area of the side wall of the groove 11, on the one hand, it can increase the coverage of the coating 2, improve the adhesion of the coating 2 on the protrusion 12, and improve the scratch resistance and non-stick performance of the coating 2 On the other hand, it is beneficial to the uniform flow of the coating 2, and can reduce the accumulation of the coating 2 at the lower part of the peripheral wall of the protrusion 12. When the container 100 is heated, it can reduce the concentration of heat there, and reduce the thermal cracking of the coating 2. It can improve the adhesion and scratch resistance of the coating layer 2, further improve the thermal conductivity uniformity of the coating layer 2 attached to it, and can make the angle between the peripheral wall of the protrusion 12 and the bottom wall of the protrusion 12. Within an appropriate range, the flow of the coating 2 on the convex peripheral wall is slowed down, thereby reducing the layering phenomenon of the coating of the coating 2 due to the phenomenon of gravity, and can make the coating 2 have a certain thickness at the groove 11. Non-stick properties and abrasion and scratch resistance of layer 2. In addition, it is also beneficial to ensure the connection strength between the protrusion 12 and the body 1 and the structural strength of the protrusion 12 .

Specifically, in the direction from the top wall of the protrusion 12 to the bottom wall of the protrusion 12, the cross-sectional area of the protrusion 12 gradually increases. In this way, the heat transfer capability of the bottom of the coating layer 2 can be improved, thereby improving the overall thermal conductivity of the coating layer 2 .

In some embodiments of the present application, the ratio of S1 to S2 ranges from 10% to 35%. This not only helps to ensure the connection strength between the protrusion 12 and the body 1, but also helps to increase the surface area of the inner wall surface of the groove 11, increase the coverage of the coating 2, and improve the non-stick performance. The structural strength of the protrusion 12 is guaranteed.

Further, the value range of the ratio of S1 to S2 is 15% to 25%. For example, the ratio of S1 to S2 is 16%, 17%, 18%, 19%, 20%, 21%, 22% or 24%. Therefore, it is advantageous to further increase the surface area of the side wall surface of the groove 11 .

According to some embodiments of the present application, a plurality of protrusions 12 are provided on the inner surface of the body 1 at uniform intervals. Therefore, it is not only beneficial to improve the aesthetic appearance of the container 100, but also to improve the wear resistance.

In some specific examples, the grooves 11 may be formed by a chemical etching process or a laser etching process. For example, the blank can have a shape similar to that of the body 1, and the inner surface of the blank can be etched by a chemical etching process or a laser etching process, so that the grooves 11 and the individual and spaced apart protrusions 12 are simultaneously machined (Refer to Figures 1-2), the protrusion 12 is protruding relative to the bottom wall of the groove 11, and the bottom wall of the groove 11 is located below the top wall of the protrusion 12, and the peripheral wall of the protrusion 12 can be The side walls of the grooves 11 are formed, and the remainder of the blank excluding the grooves 11 and projections 12 constitutes the body 1 .

In some embodiments of the present application, as shown in FIGS. 3 and 4 , the depth of the groove 11 is h, and the distance between the top walls of two adjacent protrusions 12 is k, where h/k The value ranges from 0.1 to 0.5. Therefore, by making h/k not greater than 0.5, when spraying the paint, it is beneficial to ensure that the paint can meet the Wenzel model, the paint completely infiltrates the groove 11, and the bonding ability of the coating 2 and the inner wall of the groove 11 is improved. By making h/k k is not less than 0.1, which can avoid the problem that the coating 2 in the groove 11 is easily scratched due to the small groove depth and the large distance between the top walls of the two protrusions 12, which is beneficial to improve the coating 2 service life. In addition, the value of h/k ranges from 0.1 to 0.5, which can also slow down the flow of the coating 2 on the peripheral wall of the bulge 12, thereby reducing the layering phenomenon of the paint due to the phenomenon of gravity, so that the paint is on the peripheral wall of the bulge 12. The uniform distribution of coating 2 improves the uniformity of thermal conductivity of coating 2 in groove 11, and improves the non-stick performance, wear resistance and scratch resistance of coating 2; at the same time, it can further reduce the accumulation of coating in groove 11, Improve the adhesion of coating 2 and the uniformity of thermal conductivity.

In some embodiments of the present application, the cross section of the protrusion 12 is formed in a circular shape. For example, the protrusion 12 is formed in a generally frustum shape. Therefore, it is beneficial to improve the bonding force between the protrusion 12 and the main body 1 .

According to some embodiments of the present application, the distance between the top walls of two adjacent protrusions 12 is greater than the diameter of the top walls of the protrusions 12 . Therefore, the problem that the non-stickiness of the local area centered on the protrusion 12 caused by the excessively large diameter of the top wall of the protrusion 12 is avoided.

According to some embodiments of the present application, the diameter of the top wall of the protrusion 12 is d, and the value of d ranges from 0.1 mm to 0.6 mm. In actual use, the spatula resistance of the inner surface of the main body 1 is determined by the protrusion. 12, the inner surface of the body 1 only has the top wall of the protrusion 12 without coating 2, and the coating 2 exists in the rest of the position. It has been verified by experiments that the diameter of the top wall of the protrusion 12 is less than 0.1mm, which means that the pot shovel resistance is insufficient. , and the diameter of the top wall of the protrusion 12 is greater than 0.6 mm, the surface area of the body 1 that is not covered by the coating layer 2 is too large, which affects the overall performance of the container 100 .

Specifically, the value of d ranges from 0.1 mm to 0.5 mm. In actual use, the pot shovel resistance of the inner surface of the main body 1 is provided by the protrusions 12 , and the inner surface of the main body 1 only has no top wall of the protrusions 12 . Coating 2, Coating 2 exists in the rest of the positions. It has been verified by experiments that the diameter of the top wall of the protrusion 12 is less than 0.1 mm, which means that the pot shovel resistance is insufficient, and the diameter of the top wall of the protrusion 12 is greater than 0.5 mm. The surface area in 1 that is not covered by coating 2 is too large, which affects the overall performance of container 100 .

Generally, the thinnest part of the front edge of a conventional spatula is 0.6 mm. Therefore, in order to avoid damage to the coating 2 in the groove 11 by the spatula during use and inconsistency between the protrusions 12 when wiping with a scouring pad For the destruction of the adhesive layer, the distance k between the top walls of two adjacent protrusions 12 should not exceed 0.6 mm at most.

Further, the value range of k is: 0.1-0.6 mm. For example, the value of k is 0.2mm, 0.3mm, 0.4mm or 0.5mm. Therefore, the problem of difficult processing caused by the small distance between the top walls of the two adjacent protrusions 12 can be avoided, and the small distance between the top walls of the two adjacent protrusions 12 can be avoided. As a result, the area of the groove 11 is small, thereby avoiding the problems of low coverage of the coating 2 and poor non-stickiness, and at the same time, it can also reduce the cleaning process of the container 100. The cleaning cloth enters the groove 11 and scratches the coating 2 The problem.

According to some embodiments of the present application, as shown in FIGS. 3-4 , the longitudinal section of the portion of the groove 11 located between the top walls of two adjacent protrusions 12 is arc-shaped. Therefore, there is no boundary line between the bottom wall and the side wall of the groove 11, which avoids the problem of the boundary edge of the inner wall surface of the groove 11. When the coating layer 2 is sprayed, the accumulation of the coating layer 2 at the boundary boundary can be avoided. It solves the problem that the coating layer 2 in the center of the bottom of the groove 11 is relatively thin due to the accumulation of the coating layer 2 at the interface, which is beneficial to improve the bonding force between the coating layer 2 and the groove 11 .

According to some embodiments of the present application, the arc-shaped longitudinal section of the part of the groove 11 located between the top walls of two adjacent protrusions 12 may be symmetrically arranged with respect to the center line of the two protrusions 12 . Of course, the arc-shaped longitudinal section of the part of the groove 11 located between the top walls of the two adjacent protrusions 12 can also be asymmetrically arranged with respect to the centerlines of the two protrusions 12.

According to some embodiments of the present application, as shown in FIGS. 3-4 , the longitudinal section of the portion of the coating layer 2 located between the top walls of two adjacent protrusions 12 is arc-shaped. Therefore, the shapes of the coating layer 2 and the inner wall of the groove 11 are matched, so that the adhesion force of the two can be improved, and the structure is simple, and the appearance of the container 100 can be improved.

In other embodiments, a part of the inner surface of the body 1 is concave toward the direction away from the center of the body 1 to form grooves 11 , the grooves 11 are a plurality of spaced apart, and the grooves 11 are arranged in a matrix.

Specifically, the main body 1 includes a base body and a metal mesh, the base body has a similar shape to the main body 1, the metal mesh is press-coated on the inner surface of the base body, the mesh part of the metal mesh is the groove 11, and the rib part of the metal mesh That is, the protrusion 12 .

In some embodiments of the present application, the depth of the groove 11 is h, the radial dimension of the opening of the groove 11 is k, and the value of h/k ranges from 0.1 to 0.5. Further, thus, by making h/k not greater than 0.5, when the paint is sprayed, it is beneficial to ensure that the paint can meet the Wenzel model, the paint completely infiltrates the groove 11, and the bonding ability of the coating 2 and the inner wall of the groove 11 is improved. Making h/k not less than 0.1 can avoid the problem that the coating 2 in the groove 11 is easily scratched due to the small groove depth and the large opening of the groove 11 , which is beneficial to improve the service life of the coating 2 .

Further, the value range of k is: 0.1-0.6 mm. For example, the value of k is 0.2mm, 0.3mm, 0.4mm or 0.5mm. Thereby, processing and manufacturing are facilitated.

According to some embodiments of the present application, the inner wall surface of the groove 11 is a spherical surface. Therefore, the bottom wall and the side wall of the groove 11 do not have an obvious boundary line, which avoids the problem of the boundary edge of the inner wall surface of the groove 11. When the coating layer 2 is sprayed, the accumulation of the coating layer 2 at the boundary boundary can be avoided. , which avoids the problem that the coating layer 2 at the bottom of the groove 11 is thin due to the accumulation of the coating layer 2 at the junction, which is beneficial to improve the bonding force between the coating layer 2 and the groove 11 .

According to some embodiments of the present application, the ratio of the area of the portion of the body 1 not covered by the coating 2 to the total area of the inner surface of the body 1 ranges from 2% to 40%. For example, the value range of the ratio of the area of the part not covered by the coating 2 in the body 1 to the total area of the inner surface of the body 1 is 3%, 4%, 8%, 10%, 12%, 15%, 18% , 20%, 22%, 24%, 26%, 28%, 30%, 33%, 35%, 37%. Thereby, it is beneficial to improve the performance 1 of the container, in particular, when the coating 2 includes the above-mentioned non-stick coating, it is beneficial to improve the non-stick performance of the container 100 .

According to some embodiments of the present application, the area of the side wall of the groove 11 is larger than the area of the bottom wall of the groove 11 . Thereby, the adhesion of the coating 2 on the side wall of the groove 11 can be improved, the scratch resistance and non-stick performance of the coating 2 can be improved, and on the other hand, the uniform flow of the coating of the coating 2 can be improved, and the coating can be reduced. The accumulation of the layer 2 on the lower part of the side wall of the groove 11 can reduce the concentration of heat there when the container 100 is heated, reduce the formation of thermal cracks in the coating 2, and improve the adhesion and scratch resistance of the coating 2. It is further possible to improve the thermal conductivity uniformity of the coating layer 2 attached thereto.

According to some embodiments of the present application, the body 1 is made of stainless steel, cast iron, aluminum, enamel, or glass, and the container 100 can be any type of cookware existing in the prior art, including but not limited to frying pans. Pot, rice cooker liner, pressure cooker liner, frying machine liner or bread machine liner, etc.

In some specific examples, the processing process of the container 100 is as follows: the blank may have a shape similar to that of the body 1 , and the inner surface of the blank is etched through a chemical etching process or a laser etching process, thereby simultaneously processing grooves 11 and each independent and spaced apart protrusion 12 (refer to FIGS. 1-2), the protrusion 12 is protruding relative to the bottom wall of the groove 11, and the bottom wall of the groove 11 is located at the bottom of the protrusion 12. Below the top wall, the peripheral wall of the protrusion 12 can form the side wall of the groove 11, and the rest of the blank except the groove 11 and the protrusion 12 constitutes the body 1, and the inner surface of the body 1 is evenly sprayed with paint , the paint is connected to the inner surface of the body 1 and the protrusions 12 as a whole. In the subsequent processing, the paint on the top wall of the protrusions 12 is polished off. After polishing, the body 1 needs to be ultrasonically cleaned first, and then scrubbed with a scouring pad to ensure that On the top surface of the protrusion 12 and the inner surface of the main body 1, there is no powder residue of the coating 2 that has been polished off. The container 100 thus obtained not only retains the properties of the coating layer 2, but also can withstand wiping with a spatula and a scouring pad without the coating layer 2 falling off.

In particular, when the coating 2 includes the above-mentioned non-stick coating, the white filler added in the bottom layer 21 can effectively cover the inner wall surface of the groove 11, and aluminum flake particles are added in the bottom layer 21 and the surface layer 22. And/or under the dual action of silver particles, the surface layer 22 has a good silver-white metallic luster, while the surface of the protrusions 12 provides metallic luster. In this way, when the body 1 is made of stainless steel, the color of the coating 2 can be consistent with the color of the top wall portion of the protrusion 11 in the body 1 that is not covered by the coating 2, and the inner surface of the container 100 is provided with a metallic color, so that the entire container is The 100 has a metallic luster, which can further improve the aesthetic appearance of the container 100 .

According to the cooking utensil of the embodiment of the present application, in the direction from the opening edge of the groove 11 to the bottom wall of the groove 11, the side wall of the groove 11 extends in a curved surface, so that the coating can be reduced at least to a certain extent. The flow velocity of the side wall of the groove 11 helps to improve the adhesion of the paint on the side wall of the groove 11 on the one hand, and ensures the coverage and the corresponding thickness of the paint on the side wall of the groove 11. The layering phenomenon of the coating caused by the action, and the non-stick effect is improved.

In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear" ", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying the indicated devices or elements. It must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present application. In the description of the present application, "first feature", "second feature" may include one or more of these features. In the description of this application, "plurality" means two or more. In the description of this application, a first feature being "above" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features not in direct contact but through them Additional feature contacts between. In the description of this application, the first feature "above", "over" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is level higher than Second feature.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples", etc., is meant to incorporate the embodiments A particular feature, structure, material, or characteristic described by an example or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the present application, The scope of the application is defined by the claims and their equivalents.

Claims

A container, characterized in that, comprising:

a main body, the inner surface of the main body is provided with a groove, and in the direction from the opening edge of the groove to the bottom wall of the groove, the side wall of the groove extends in a curved surface;

The coating is provided on the inner wall surface of the groove.
The container according to claim 1, wherein the entire inner wall surface of the groove is a curved surface.
The container of claim 1, wherein the coating does not protrude beyond the opening edge of the groove.
The container according to claim 3, wherein the surface of the coating layer on one side away from the inner wall surface of the groove is a curved surface.
The container according to claim 1, wherein the depth of the groove is h, and the value range of h is: 0.05-0.3 mm.
The container according to claim 5, wherein the value of h ranges from 0.1 to 0.2 mm.
The container according to claim 1, wherein the inner surface of the body is provided with a plurality of protrusions spaced apart and protruding from the inner surface of the body, the peripheral walls of the plurality of protrusions and the The inner surface of the body defines the groove.
The container according to claim 7, wherein the area of the raised top wall is S1, the area of the raised bottom wall is S2, and the value range of the ratio of S1 to S2 2% to 40%.
The container according to claim 8, wherein the ratio of the S1 to the S2 ranges from 15% to 25%.
8. The container of claim 7, wherein the raised cross-sectional area gradually increases in a direction from the raised top wall to the raised base wall.
The container according to claim 7, characterized in that, the distance between the two adjacent convex top walls is greater than the diameter of the convex top walls; and/or, the two adjacent convex top walls are The distance between the top walls of the protrusions is k, and the value of k ranges from 0.1 to 0.6 mm.
The container according to claim 7, wherein the protrusion and the body are one piece.
The container according to claim 7, wherein the depth of the groove is h, the distance between the top walls of two adjacent protrusions is k, and the value range of h/k is 0.1 ~0.5; and/or, the distance between the top walls of two adjacent protrusions is k, and the value of k ranges from 0.1 to 0.6 mm of the container.
The container according to claim 7, characterized in that the longitudinal section of the part of the coating layer located between the top walls of two adjacent protrusions is arc-shaped.
The container according to claim 7, wherein the shape of the raised top wall is a circle, the diameter of the raised top wall is d, and the value of d ranges from 0.1 mm to 0.6 mm; And/or, the longitudinal section of the part of the groove located between the top walls of two adjacent protrusions is arc-shaped.
2. The container of claim 1, wherein a portion of the inner surface of the body is concave in a direction away from the center of the body to form the grooves, the grooves being a plurality of spaced apart.
The container of claim 1, wherein the thickness of the coating at the bottom wall of the groove is greater than the thickness of the coating at the side walls of the groove.
The container according to claim 1, wherein the thickness of the coating layer gradually increases in the direction from the opening edge of the groove to the bottom wall of the groove.
The container according to claim 1, wherein the grooves are formed by a chemical etching process or a laser etching process.
The container of claim 1, wherein the coating comprises multiple layers of non-stick coatings arranged in layers.
The container according to claim 20, wherein the non-stick coating has two layers and is a bottom layer and a surface layer, the bottom layer is provided on the inner wall surface of the groove, and the surface layer is provided on the the side of the bottom layer facing away from the inner wall surface of the groove.
21. The container of claim 21, wherein the bottom layer comprises: a first pigment filler, the color tone of the bottom layer being adapted to cover the color tone of the body.
The container according to claim 22, wherein the first pigment filler is a white filler, and the white filler is at least one selected from the group consisting of titanium, titanium oxide, zinc oxide and aluminum oxide.
21. The container of claim 21, wherein the top layer includes a second color filler, the top layer having a different color than the bottom layer.
The container of claim 24, wherein the second color filler is aluminum flake particles; and/or silver particles.
The container according to claim 21, wherein the film thickness of the bottom layer is 6-30 μm; and/or the film thickness of the surface layer is 8-20 μm.
The container according to claim 21, wherein the thickness of the bottom layer gradually increases in the direction from the opening edge of the groove to the bottom wall of the groove.
The container according to claim 21, wherein the thickness of the bottom layer of the lower part of the side wall of the groove is the same as the thickness of the bottom layer of the bottom wall of the groove.
The container according to claim 1, characterized in that, the container is a cookware; and/or the body is a stainless steel piece, a cast iron piece, an aluminum piece, an enamel piece or a glass piece.
The container of claim 1, wherein the area of the side wall of the groove is larger than the area of the bottom wall of the groove.
The container according to any one of claims 1-30, wherein the ratio of the area of the portion of the body not covered by the coating to the total area of the inner surface of the body ranges from 2% to 40%.
A cooking appliance, characterized in that it comprises the container according to any one of claims 1-31.