CN220141410U

CN220141410U - Inner container of cooking utensil and cooking utensil

Info

Publication number: CN220141410U
Application number: CN202320865048.3U
Authority: CN
Inventors: 朱泽春; 崔卫民; 谢伟峰
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-12-08
Anticipated expiration: 2033-04-13

Abstract

The utility model discloses an inner container of a cooking utensil, which comprises a metal matrix, wherein the inner surface of the metal matrix is an anti-sticking surface formed by a plurality of micron-level grooves or protrusions, and the anti-sticking surface is provided with a silicon dioxide film formed by PVD (physical vapor deposition) coating. According to the utility model, the anti-sticking surface is arranged on the inner surface of the metal matrix, and the PVD coating is adopted to form a layer of silicon dioxide film, so that not only can the non-sticking effect be realized, but also food can not be polluted and substances harmful to human bodies and environment can not be generated, and in addition, the physical property and chemical property of the inner surface of the liner can be improved, so that the effects of no scratch, no coating, non-sticking and color change resistance of the inner surface of the liner after long-time use are ensured. The utility model also provides a cooking utensil, including the pot body and pot cover, the pot body includes outer pot and above-mentioned inner bag, the inner bag is placed in outer pot.

Description

Inner container of cooking utensil and cooking utensil

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a liner of a cooking appliance and the cooking appliance.

Background

The existing electric heating cooker such as an electric cooker generally comprises a cooker body and a cooker cover, wherein an inner container and a heating device such as a heating disc or an IH wire coil are arranged in the cooker body, the inner container is generally made of metal materials, and heat can be transferred to the inner container after the heating device is electrified, so that rice in the inner container can be heated and cured. But the electric cooker can have the phenomenon of sticking to the cooker in the cooking process, so that the inner container is difficult to clean after meal, the inner container is easy to scrape after long-term use, the adhesiveness of the inner container is enhanced, rice in the inner container is easier to stick to the inner container, and the use experience of a user is deteriorated.

In order to solve the technical problem in the prior art, a protective layer is coated on the inner wall of the liner, the most commonly used coating material is Teflon, and the brand name of polytetrafluoroethylene is Teflon, so that the problem of sticking to the pot is well solved, and convenience is brought to the life of people. However, the protective layer on the inner wall of the liner is easy to fall off in the use process, especially in high-temperature cooking, and if the liner is empty, the protective layer is easy to fall off. Polytetrafluoroethylene is nontoxic, but when the inner container is in a high-temperature cooking or idle burning state, polytetrafluoroethylene is carbonized and cracked, and releases trace toxic gases and substances to pollute the cooked meal, so that the problems of sticking the cooked food to the pot, miseating of chemical coatings and the like are caused.

Disclosure of Invention

The utility model aims to solve the technical problems of overcoming the defects in the prior art and providing the liner of the cooking utensil and the cooking utensil, which not only can realize non-sticking to a pot, but also can not pollute food and generate substances harmful to human bodies and the environment, and simultaneously can also play the effect that the liner is not easy to scratch.

In order to achieve the above purpose, the specific technical scheme of the utility model is as follows:

the inner container of the cooking utensil comprises a metal matrix, wherein the inner surface of the metal matrix is an anti-sticking surface formed by a plurality of micron-sized grooves or protrusions, and the anti-sticking surface is provided with a silicon dioxide film formed by PVD coating.

In the inner container of the cooking utensil, the thickness of the silicon dioxide film is 0.5-2.5 μm.

In the inner container of the cooking utensil, the grooves or the bulges are mutually independent, the equivalent depth of the grooves or the equivalent height of the bulges is 30-70 mu m, and the equivalent diameter of the grooves or the bulges is 200-450 mu m.

In the inner container of the cooking utensil, a plurality of grooves or protrusions are distributed on the inner surface of the metal matrix in a matrix or honeycomb mode.

In the inner container of the cooking utensil, the inner surface of the groove or the raised surface is a rough surface formed by a plurality of mastoid processes with at least a micron level.

In the inner container of the cooking utensil, the height of the mastoid is larger than the thickness of the silicon dioxide film.

In the inner container of the cooking utensil, the metal matrix comprises an outer stainless steel layer, an inner stainless steel layer and an aluminum layer arranged between the outer stainless steel layer and the inner stainless steel layer, and the silicon dioxide film is arranged on the inner surface of the inner stainless steel layer.

In the inner container of the cooking utensil, the metal matrix is of a single-layer structure.

In the inner container of the cooking utensil, the outer surface of the metal substrate is provided with a chromium film formed by PVD coating.

The utility model also provides a cooking utensil, which comprises a pot body and a pot cover, wherein the pot body comprises an outer pot and the inner container according to any scheme, and the inner container is placed in the outer pot.

The utility model has the beneficial effects that:

the inner surface of the metal matrix is an anti-sticking surface formed by a plurality of micron-sized grooves or bulges, after the inner container is used for cooking, a small amount of water remained in the inner container and small water drops formed by water vapor in a rice gap can be stored at the low-lying position between the grooves or bulges, so that a layer of water-wetting film is formed, the water-wetting film can infiltrate rice and the inner wall of the inner container, the bonding strength and the adhesiveness of the rice and the inner wall of the inner container are further reduced, the rice cannot be adhered to the inner wall of the inner container, the effect of non-sticking of a pot is finally realized, the rice cannot fall off during cooking, and food and substances harmful to human bodies and the environment cannot be polluted; secondly, the silicon dioxide film is arranged on the anti-sticking surface, so that the wear resistance and scratch resistance of the inner surface of the inner container can be improved, the inner surface of the inner container has good chemical stability, and the color change caused by the reaction of the inner container at high temperature is avoided, so that the inner surface of the inner container is ensured to have no scratch and the color change resistance effect after the inner container is used for a long time; in addition, the silicon dioxide film is plated on the anti-sticking surface by adopting a PVD (physical vapor deposition) coating technology, and the target material small molecular group is combined with the anti-sticking surface in a near atomic level, so that the combination effect is close to the metal bond energy, the firmness and the compactness are extremely high, and the ultra-high wear resistance and scratch resistance are achieved.

The thickness of the silicon dioxide film is set to be 0.5-2.5 mu m, so that the silicon dioxide film is in a proper thickness, the problems of low wear resistance and easy scratching of the liner caused by too small thickness of the silicon dioxide film can be avoided, and the problems of poor heat conductivity of the liner, influence on cooking and increase of manufacturing cost caused by too large thickness of the silicon dioxide film can be avoided.

The grooves or the protrusions are arranged independently, the depth of the grooves or the height of the protrusions is 30-70 microns, and the equivalent diameter of the grooves or the equivalent diameter of the protrusions is 200-450 microns. By the design, the processability of the grooves and the protrusions and the non-adhesive performance of the anti-adhesive surface can be considered, the problems that a water-wetting film cannot be formed and the anti-adhesive surface is difficult to process due to the fact that water cannot be stored due to undersize of the grooves or the protrusions are solved, and the problem that the inner container is difficult to clean due to the fact that rice grains are easy to clamp into the grooves or the protrusions and burnt and adhered in the low-lying positions between the grooves or the protrusions due to oversized of the grooves or the protrusions are solved.

Because a plurality of grooves or bulges are distributed on the inner surface of the metal matrix in a matrix or honeycomb shape, the design can be orderly and orderly seen visually, the appearance is more attractive, and the appearance of the liner is effectively improved.

The inner surface of the groove or the raised surface is a rough surface formed by a plurality of mastoid processes with at least micron level, so that the inner surface of the groove forms a bionic concave-convex structure similar to lotus leaves, the formation of a water-wetting film is facilitated, the contact area between rice and the inner surface of the groove is further reduced, and the non-sticking effect is further improved.

The height of mastoid is greater than the thickness of silica membrane, can avoid the original coarse structure of low-lying department between the mastoid to be destroyed, even scrape for a long time during the washing, also be difficult to wearing and tearing to play the effect that keeps non-sticking.

The metal matrix comprises an outer stainless steel layer, an inner stainless steel layer and an aluminum layer arranged between the outer stainless steel layer and the inner stainless steel layer, wherein an anti-sticking surface is formed on the inner surface of the inner stainless steel layer 103, the silicon dioxide film is arranged on the inner surface of the inner stainless steel layer, the structural strength of the inner container can be ensured, meanwhile, the food safety is ensured, the adverse effect of the inner container on the health of a user is avoided, the metal matrix adopts a multilayer composite structure, the heat conducting performance of the inner container is good, the heat accumulating capacity is strong, cooked rice is round and smooth, the particles are full, and the cooked rice is soft and glutinous and Q-shaped after being imported is delicious and sweet.

The metal matrix is of a single-layer structure, and the liner is of a single-layer structure, so that the price is relatively low and the practicability is good.

The outer surface of the metal matrix is provided with a chromium film formed by PVD coating, so that the wear resistance and scratch resistance of the coating can be improved, the coating has good chemical stability, and the color change caused by reaction after the coating is at high temperature is avoided, thereby ensuring the effects of no scratch and color change resistance of the inner surface of the liner after the liner is used for a long time.

These features and advantages of the present utility model will be disclosed in detail in the following detailed description and the accompanying drawings.

Drawings

FIG. 1 is a schematic view of a liner according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a liner according to an embodiment of the present utility model;

FIG. 3 is an enlarged partial schematic view of FIG. 2A;

FIG. 4 is an enlarged partial schematic view at B in FIG. 2;

FIG. 5 is an enlarged partial schematic view of the embodiment B of FIG. 2;

fig. 6 is a cross-sectional view of three cooking appliances according to an embodiment of the present utility model.

Reference numerals:

001. a pot body; 002. a pot cover; 100. a metal matrix; 101. an outer stainless steel layer; 102. an aluminum layer; 103. an inner stainless steel layer; 110. a silicon dioxide film; 111. a groove; 112. mastoid process; 120. and (3) a chromium film.

Detailed Description

For a better understanding of the objects, structures and functions of the present utility model, the following description of the embodiments of the present utility model will explain and illustrate the technical solution of the embodiments of the present utility model with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, not all of them. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model. In addition, it is to be understood that the terms "upper," "lower," "left," "right," "longitudinal," "transverse," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like, which refer to an orientation or positional relationship, are merely based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices/elements referred to must have a specific orientation or be configured and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.

Example 1

Referring to fig. 1 to 4, the present embodiment provides a liner of a cooking appliance, including a metal base 100, wherein an inner surface of the metal base 100 is a release surface formed of a plurality of micro-scale grooves 111, and the release surface is provided with a silicon dioxide film 110 formed by PVD plating.

According to the utility model, the inner surface of the metal matrix 100 is an anti-sticking surface formed by a plurality of micron-sized grooves 111, after cooking by using the liner, a small amount of water left in the liner and small water drops formed by water vapor in a rice gap can be stored at the low-lying part between the grooves 111, so that a layer of water-wetting film is formed, and the water-wetting film wets rice and the inner wall of the liner, so that the bonding strength and adhesiveness between the rice and the inner wall of the liner are reduced, the rice cannot be adhered to the inner wall of the liner, the effect of non-sticking of a pan is finally realized, the rice cannot fall off during cooking, and food and substances harmful to human bodies and the environment cannot be polluted; secondly, the silicon dioxide film 110 is arranged on the anti-sticking surface, so that the wear resistance and scratch resistance of the inner surface of the inner container can be improved, the inner surface of the inner container has good chemical stability, and the color change caused by the reaction of the inner container at high temperature is avoided, so that the inner surface is ensured to have no scratch and the color change resistance effect after the inner container is used for a long time; in addition, the silicon dioxide film 110 is plated on the anti-sticking surface by adopting a PVD coating technology, and the bonding effect of the target material small molecular group and the anti-sticking surface is close to the atomic level, so that the bonding effect is close to the metal bond energy, the firmness and the compactness are extremely high, and the ultra-high wear resistance and scratch resistance are achieved.

According to the utility model, the thickness of the silicon dioxide film 110 is smaller than the equivalent depth of the groove 111 so as to ensure that the inner surface of the liner still has an anti-sticking effect after PVD coating, the thickness of the silicon dioxide film 110 is 0.5-2.5 mu m, preferably, the thickness of the silicon dioxide film 110 is 1.5 mu m, when the thickness of the silicon dioxide film 110 is smaller than 0.5 mu m, the problems of low wear resistance and easy scratching of the liner are easily caused, and when the thickness of the silicon dioxide film 110 is larger than 2.5 mu m, the heat conductivity of the liner is easily caused to be poor so as to influence cooking, therefore, the silicon dioxide film 110 is in a proper thickness, the problems of low wear resistance and easy scratching of the liner caused by the fact that the thickness of the silicon dioxide film 110 is too large can be avoided, and the problems of poor heat conductivity of the liner, influence on cooking and increase of manufacturing cost are also avoided.

It is understood that in other embodiments of the utility model, the thickness of the silica film may also be, but is not limited to, reasonable values of 0.8 μm, 1.3 μm, 1.6 μm, 2.1 μm, 2.3 μm, etc.

The plurality of grooves 111 are provided independently of each other in this embodiment. The grooves 111 may be formed by laser processing, machining, etching, photolithography, etc., where the grooves 111 are randomly distributed or distributed in a matrix on the bottom surface of the liner and distributed in a plurality of annular arrays on the inner side of the liner or all distributed in a plurality of annular arrays on the entire inner surface of the body, so that the entire inner surface of the metal substrate 100 forms the anti-sticking surface.

Specifically, as shown in fig. 3 and 4, the depth H of the groove 111 is 30 μm to 70 μm, the equivalent diameter D of the groove 111 is 200 μm to 450 μm, and when the depth H of the groove 111 is less than 30 μm and the equivalent diameter D of the groove 111 is less than 200 μm, the groove 111 can not store water and form a water-wet film due to undersize, thereby reducing the non-stick performance of the anti-stick surface and simultaneously causing the problem that the anti-stick surface is difficult to process; when the depth H of the groove 111 is greater than 70 μm and the equivalent diameter D of the groove 111 is greater than 450 μm, rice grains are easy to be blocked into the groove 111 due to oversized grains, and the inner container is difficult to clean due to scorching and sticking; therefore, in this embodiment, the depth H of the groove 111 is preferably 50 μm, and the equivalent diameter D of the groove 111 is preferably 350 μm, so that the design can not only give consideration to the workability of the groove 111 and the non-stick property of the anti-sticking surface, but also avoid the problems that the water-wet film cannot be formed and the anti-sticking surface is difficult to process due to the fact that the water cannot be stored because the groove 111 is too small, and avoid the problem that the inner container is difficult to clean because rice grains are easy to be blocked into the groove 111 due to the fact that the groove 111 is too large in size. Of course, alternatively, the depth H of the groove 111 may also be, but not limited to, 30 μm, 40 μm, 60 μm, 70 μm, etc., and the equivalent diameter D of the groove 111 may also be, but not limited to, 200 μm, 250 μm, 300 μm, 400 μm, 500 μm, etc.

In addition, as shown in fig. 3, in the present embodiment, the interval W between two adjacent grooves 111 is 400 μm to 600 μm, and when the interval W between two adjacent grooves 111 is greater than 600 μm, the area of the inner surface of the portion between two adjacent grooves 111 is too large, so that the contact area between the rice and the inner surface of the liner is increased, and the effect of rice adhesion occurs; when the distance W between two adjacent grooves 111 is smaller than 400 μm, the difficulty in machining the grooves 111 is increased, and the manufacturing cost is increased. For this reason, in this embodiment, the interval between two adjacent grooves 111 is preferably 500 μm, so that the design can not only avoid the adhesion effect caused by the overlarge contact area with rice due to the overlarge interval W between two adjacent grooves 111, but also improve the total area occupation ratio of the grooves 111 to promote the non-adhesion effect of the anti-adhesion surface; in addition, the workability can be considered, so that the processing cost can be reduced. Of course, alternatively, the spacing W between adjacent two grooves 111 may also be, but is not limited to, 400 μm, 450 μm, 550 μm, 600 μm, etc.

It should be noted that, in this embodiment, the shape of the groove 111 is not specifically limited, and the equivalent diameter is the maximum circumscribing circle size of the circumferential outline of the notch of the groove 111, for example, in a specific embodiment, the shape of the groove 111 is a circle, and the equivalent diameter refers to the diameter of the circle; in another specific embodiment, the shape of the groove 111 is a regular hexagon, and the equivalent diameter refers to the diameter of the circumscribing circle of the regular hexagon; in another specific embodiment, the shape of the recess 111 is rectangular, and the equivalent diameter refers to the width dimension between two short sides of the rectangle. Of course, those skilled in the art may also set the recess 111 to be square or the like according to specific conditions such as requirements of the processing technology, and the description thereof will not be repeated herein.

In order to further increase the anti-adhesion performance of the inner surface of the groove 111, the inner surface of the groove 111 is a rough surface with a micron level, preferably, the inner surface of the groove 111 is a rough surface composed of a plurality of mastoid 112 with a micron level at least, and the height of the mastoid 112 is larger than the thickness of the silicon dioxide film 110, so that the original rough structure at the low-lying position between the mastoid 112 can be prevented from being damaged, and the groove is not easy to be worn even if scraped for a long time during cleaning, thereby playing the role of keeping non-adhesion. The mastoid 112 structure is formed by photoetching machine processing or etching process processing, so that the inner surface of the groove 111 forms a bionic concave-convex structure similar to lotus leaves, which is more beneficial to the formation of a water-wetting film, so as to further reduce the contact area between rice and the inner surface of the groove 111, and further improve the non-sticking effect.

It will be appreciated that in other embodiments of the present utility model, the inner surface of the metal substrate may also be a release surface comprising a plurality of micro-scale protrusions, the protrusions having an equivalent height of 30 μm to 70 μm and an equivalent diameter of 200 μm to 450 μm, the protrusions having a surface roughness comprising a plurality of at least micro-scale mastoid processes, which is designed to achieve the technical effects of the preferred embodiment and will not be described in detail herein.

It is understood that in other embodiments of the present utility model, the plurality of grooves may also be honeycomb-like and distributed over the inner surface of the metal substrate.

It is understood that in other embodiments of the present utility model, the plurality of grooves may also be disposed in a grid pattern over the inner surface of the metal substrate.

In the present embodiment, the metal base 100 includes an outer stainless steel layer 101, an inner stainless steel layer 103, and an aluminum layer 102 provided between the outer stainless steel layer 101 and the inner stainless steel layer 103, the inner surface of the inner stainless steel layer 103 forms a release surface, and the silica film 110 is provided on the inner surface of the inner stainless steel layer 103. The outer stainless steel layer 101 and the inner stainless steel layer 103 are made of food-grade metal materials, such as SUS304 or SUS316L materials, so that the structural strength of the inner container can be ensured, the food safety is ensured, and adverse effects of the inner container on the health of a user are avoided; in addition, the metal matrix 100 adopts a multi-layer composite structure, so that the inner container has good heat conduction performance and strong heat storage capacity, the cooked rice is round and smooth, the grains are full, and the cooked rice is soft and glutinous and Q-shaped after being eaten, and is delicious and sweet.

It is understood that in other embodiments of the utility model, the metal substrate may also be a single layer stainless steel structure. The liner adopts the aspect of single-layer structure processing, and the price is relatively low, and the practicality is good.

Example two

In this embodiment, as shown in fig. 5, the outer surface of the metal base 100 is provided with a chromium film 120 formed by PVD plating. By the design, the wear-resistant and scratch-resistant performance of the coating can be improved, the coating has good chemical stability, and the color change caused by reaction after the coating is at a high temperature is avoided, so that the inner surface of the liner is free from scratch after long-time use, and the color change resistant effect is ensured. The color of the chromium film is silver and the same with the stainless steel layer of the inner layer, so that the appearance of the inner surface of the inner container and the appearance of the outer surface of the inner container are unified.

Example III

As shown in fig. 6, the embodiment provides a cooking appliance, which comprises a pot body 001 and a pot cover 002, wherein the pot cover 002 and the pot body 001 can be hinged or can be arranged separately; the pot body 001 includes outer pot, and outer pot has cylindric accommodation space, and the inner bag can be put into accommodation space or take out in the accommodation space in order to conveniently wash it, and outer pot is located the bottom of accommodation space and is equipped with the dish that generates heat or electromagnetic wire coil that heats the inner bag to this realizes the heating to eating the material in the inner bag through the mode of heating the inner bag.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The inner container of the cooking utensil comprises a metal matrix, and is characterized in that the inner surface of the metal matrix is an anti-sticking surface formed by a plurality of micron-level grooves or protrusions, the anti-sticking surface is provided with a silicon dioxide film formed by PVD coating, and the outer surface of the metal matrix is provided with a chromium film formed by PVD coating.

2. The liner of a cooking appliance according to claim 1, wherein the silica film has a thickness of 0.5 μm to 2.5 μm.

3. The liner of claim 2, wherein the grooves or protrusions are provided independently of each other, the equivalent depth of the grooves or the equivalent height of the protrusions is 30 μm to 70 μm, and the equivalent diameter of the grooves or the protrusions is 200 μm to 450 μm.

4. The liner of claim 2, wherein a plurality of said grooves or protrusions are disposed in a matrix or honeycomb arrangement on the inner surface of said metal substrate.

5. A liner for a cooking appliance according to claim 2, wherein the inner surface of the recess or the raised surface is a roughened surface formed by a plurality of mastoid processes of at least a micrometer scale.

6. The liner of claim 5, wherein the mastoid height is greater than the thickness of the silica membrane.

7. The inner container of a cooking apparatus according to any one of claims 1 to 6, wherein the metal base comprises an outer stainless steel layer, an inner stainless steel layer, and an aluminum layer provided between the outer stainless steel layer and the inner stainless steel layer, and the silica film is provided on an inner surface of the inner stainless steel layer.

8. A liner for a cooking utensil as claimed in any one of claims 1 to 6, wherein the metal base is of a single layer structure.

9. A cooking appliance comprising a pot body and a pot cover, wherein the pot body comprises an outer pot and the inner container of any one of claims 1 to 8, the inner container being placed in the outer pot.