CN211380776U - Container and cooking utensil - Google Patents

Abstract

The utility model discloses a container and cooking utensil, the container includes: the container comprises a container body and a coating, wherein the coating is arranged on the surface of the container body, and the thickness of at least one part of the coating is gradually increased towards the direction close to the bottom center of the container body along the radial direction of the container body. According to the utility model discloses container, through the surface spraying coating at vessel's for the thickness of coating is followed vessel's radial court is close to vessel's bottom center's direction crescent, thereby effectively releases thermal stress, avoids the coating to drop, guarantees the reliability of coating.

Description

Container and cooking utensil

Technical Field

The utility model belongs to the technical field of life electrical apparatus technique and specifically relates to a container and cooking utensil are related to.

Background

An inner pot of the existing cooking utensil adopts an electromagnetic heating mode, the inner pot is generally made of an iron-aluminum composite plate, but the iron-aluminum composite plate has the problem of cracking and has higher cost; or the inner pot is made of iron-based enamel, and then the non-stick coating is arranged outside the enamel layer, but the enamel layer is too brittle and is easy to crack porcelain, the heat conductivity is poor, and the energy consumption is high.

In order to solve the problems, in the related art, a mode of spraying an aluminum coating on the surface of an iron-based pot is adopted to manufacture the pot, however, due to the difference of thermal expansion coefficients of the aluminum coating and an iron base material, the problem that the aluminum coating and the iron base layer have thermal stress concentration in the long-term use process of the inner pot is caused, so that the problems of local point falling and rusting exist in the long-term use process of the aluminum coating with uniform thickness.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. For this reason, an object of the present invention is to provide a container, which improves the problem of thermal stress concentration and has a good heating effect.

The utility model discloses still provide a cooking utensil who has above-mentioned container.

According to the utility model discloses container of first aspect embodiment includes: a container body; the coating is arranged on the surface of the container body, and the thickness of at least one part of the coating is gradually increased towards the direction close to the bottom center of the container body along the radial direction of the container body.

According to the utility model discloses the container is through the surface spraying coating at vessel to set up the thickness of coating into following vessel's radial court is close to vessel's bottom center's direction crescent not only can improve the corrosion resisting property of coating, can effectively release thermal stress moreover, avoids the coating to drop, guarantees the reliability of coating.

According to some embodiments of the invention, the coating comprises at least one coating segment extending in a circumferential direction of an imaginary circle centered on the bottom center of the containment body, the thickness of at least a part of the coating segment increasing gradually in a radial direction of the containment body towards a direction close to the bottom center of the containment body.

In some embodiments, the position in the radial direction of the imaginary circle where the thickness of the coating segments is greatest is offset to the inside of the centre line of the coating segments.

In some embodiments, the coating segments are one, and in a radial direction of the imaginary circle, a side of the at least a part of the coating segments closer to the bottom center of the container body has a thickness of 300um-600um, and a side of the at least a part of the coating segments farther from the bottom center of the container body has a thickness of 30um-150 um.

In other embodiments, the coating segments are multiple, and the multiple coating segments are arranged along the radial direction of the imaginary circle.

In some examples, any two adjacent coating segments are connected to each other.

In some examples, two adjacent coating segments are respectively an inner coating segment and an outer coating segment, and a stepped structure is formed between the inner coating segment and the outer coating segment, wherein in the radial direction of the imaginary circle, the thickness of one side of the outer coating segment close to the bottom center of the container body is larger than that of one side of the inner coating segment far away from the bottom center of the container body.

In some examples, the average width of the coating segments decreases gradually from the outside to the inside in a plurality of the coating segments.

In some examples, in a plurality of coating segments, the contour line of the cross section of the at least one part of the coating segment away from the container body is L, and the included angle between the two end points of the L and the horizontal plane is gradually increased from outside to inside.

In some examples, the average thickness of the plurality of coating segments gradually increases in a radial direction of the containment body toward a bottom center of the containment body.

In some examples, among the plurality of coating segments, a side of the innermost coating segment that is closer to the bottom center of the container body has a thickness of 400um to 600um, and a side of the innermost coating segment that is farther from the bottom center of the container body has a thickness of 300um to 400 um.

In some examples, in the plurality of coating segments, the thickness of the outermost coating segment on the side close to the bottom center of the container body is 60um to 200um, and the thickness of the outermost coating segment on the side far from the bottom center of the container body is 30um to 60 um.

According to some embodiments of the present invention, the coating comprises a first coating layer, the first coating layer comprising at least one of the coating segments, the first coating layer being provided on the inner surface of the container body.

In some embodiments, a non-stick coating or a rust preventative layer is disposed on the first coating.

In some embodiments, the material of the container body is iron or aluminum, and the material of the first coating layer is aluminum or aluminum alloy.

In some embodiments, the first coating is provided on at least an inner surface of the bottom of the container body.

According to other specific embodiments of the present invention, the coating includes a second coating layer, the second coating layer including at least one coating segment, the second coating layer being disposed on an outer surface of the container body.

In some embodiments, the material of the second coating is a magnetically permeable material.

In some embodiments, the outer surface of the bottom of the container body has a centrally located temperature sensing region and a spray region surrounding the temperature sensing region, the second coating being provided on the spray region.

According to some embodiments of the invention, the coating is sprayed on the surface of the container body by a cold spray process.

According to some embodiments of the invention, the container forms a pot.

The cooking appliance according to the second aspect of the invention comprises the container according to the above embodiments.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a container according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of the container shown in FIG. 1;

fig. 3 is a schematic structural view of a container according to another embodiment of the present invention;

fig. 4 is an enlarged view of a portion of the container shown in fig. 3.

Reference numerals:

the number of the containers 100 is such that,

the container body 10, the temperature measuring area 101, the spraying area 102,

the coating layer 20, the coating segment 201, the first coating layer 21, the second coating layer 22,

non-stick coating 30, protective layer 40.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A container 100 according to an embodiment of the present invention is described below with reference to fig. 1-4.

As shown in fig. 1-4, a container 100 according to an embodiment of the present invention includes a container body 10 and a coating layer 20, wherein the coating layer 20 is disposed on a surface of the container body 10, and specifically, the coating layer 20 may be disposed on an inner surface of the container body 10 or an outer surface of the container body 10. The thickness of at least a portion of the coating layer 20 gradually increases in a radial direction of the container body 10 toward a bottom center of the container body 10.

According to the utility model discloses container 100, through the surface spraying coating 20 at vessel 10, set up the thickness of coating 20 to follow vessel 10 radially towards being close to vessel 10's the direction at vessel 10's bottom center is crescent, not only can improve the corrosion resistance of coating, can effectively release thermal stress moreover, avoids coating 20 to drop, guarantees coating 20's reliability.

According to some embodiments of the present invention, the coating 20 comprises at least one coating segment 201, the coating segment 201 extending in a circumferential direction of an imaginary circle centered on the bottom center of the container body 10.

In which the thickness of at least a portion of the coating segment 201 gradually increases in a direction approaching the bottom center of the vessel body 10 along the radial direction of the vessel body 10, for example, at least a portion of the top outer contour line of the coating segment 201 may be formed in a straight line shape that is gradually inclined upward from the outside to the inside, or may be formed in a curved line shape that is gradually extended upward from the outside to the inside, or the entire top outer contour line of the coating segment 201 may be formed in a straight line shape or a curved line shape that is gradually inclined upward from the outside to the inside.

Wherein, two adjacent coating segments 201 can be in smooth transition, and can also form a sawtooth structure or a step structure. For convenience of description, the interface of two adjacent coating segments 201 may be defined as an imaginary plane passing through the recesses of the zigzag structure or the stepped structure and perpendicular to the wall of the container body 10.

In some alternative embodiments, the coating segments 201 may form a circular ring-shaped coating extending along the circumferential direction of the imaginary circle, the width direction of the circular ring-shaped coating extends along the radial direction of the imaginary circle, and the thickness of the circular ring-shaped coating gradually increases from the outside to the inside in the width direction, that is, the thickness of the circular ring-shaped coating at the outer side is the smallest, and the thickness of the circular ring-shaped coating at the inner side is the largest.

In further alternative embodiments, the coating segments 201 may form a disc-shaped coating, the radial direction of which extends in the radial direction of said imaginary circle, the thickness of the disc-shaped coating at the outer side being the smallest and the thickness of the disc-shaped coating at the center being the largest.

In some specific embodiments, the position in the radial direction of the imaginary circle where the thickness of the coating segment 201 is the largest is offset to the inner side of the centerline of the coating segment 201. That is, it is defined that the surface of the coating segment 201 on the side facing the imaginary circle is an inner side surface, the surface of the coating segment 201 on the side facing away from the imaginary circle is an outer side surface, and the distance between the position where the thickness of the coating segment 201 is largest and the inner side surface of the coating segment 201 in the radial direction of the imaginary circle is smaller than the distance between the position where the thickness of the coating segment 201 is largest and the outer side surface of the coating segment 201 in the radial direction of the imaginary circle.

In some embodiments, the coating segment 201 is one, and in a radial direction of the imaginary circle, a thickness of a side of the at least one portion of the coating segment 201 close to the bottom center of the container body 10 is 300um to 600um, and a thickness of a side of the at least one portion of the coating segment 201 away from the bottom center of the container body 10 is 30um to 150 um.

That is, in the direction of the wall thickness of the container body 10, the height of the side of the at least one portion of the coating section 201 close to the bottom center of the container body 10 is 300um-600um, and the height of the side of the at least one portion of the coating section 201 away from the bottom center of the container body 10 is 30um-150 um. For example, the thickness of the side of the at least one portion of the coating segment 201 close to the bottom center of the container body 10 may be 300um, 400um, 500um, 600um, and the thickness of the side of the at least one portion of the coating segment 201 far from the bottom center of the container body 10 may be 30um, 50um, 80um, 100um, 120um, 150 um.

For ease of understanding, a section of the coating segment 201 in the radial direction of the imaginary circle is described below, the thickness of which section gradually increases from the outside to the inside in the radial direction of the imaginary circle, i.e., the section having the largest thickness at the inner side (i.e., the side surface closer to the bottom center of the container body 10) and the smallest thickness at the outer side (i.e., the side surface away from the bottom center of the container body 10), where the inner side is defined as an imaginary plane passing through the point of the largest thickness and perpendicular to the wall of the container body, and the outer side is defined as an imaginary plane passing through the point of the smallest thickness and perpendicular to the wall of the container body.

Specifically, as shown in fig. 2, the entire thickness of the coating segment 201 in the radial direction of the imaginary circle gradually increases from the outside to the inside in the radial direction of the imaginary circle, the inner side surface of the coating segment 201 is an imaginary plane L1 passing through the highest point and perpendicular to the wall of the container body 10, and the outer side surface of the coating segment 201 is an imaginary plane L2 passing through the lowest point and perpendicular to the wall of the container body 10.

The inner side and the outer side are defined for convenience of describing the thickness distribution of the coating segments 201, and do not limit the actual structure of the coating segments 201. In fact, when spraying the coating segment 201, the inner and outer sides of the coating segment 201 do not have to be smooth planes or curved surfaces, as will be understood by those skilled in the art.

In other embodiments, the coating segment 201 is multiple, and the multiple coating segments 201 are arranged along the radial direction of the imaginary circle.

For example, the plurality of coating segments 201 form a circular ring-shaped coating, the plurality of circular ring-shaped coatings are concentrically arranged, two adjacent circular ring-shaped coatings can be connected or arranged at intervals, and the average thickness of the plurality of circular ring-shaped coatings gradually increases from outside to inside along the radial direction of the imaginary circle.

For another example, one of the coating segments 201 forms a disk-shaped coating, and the remaining coating segments 201 of the coating segments 201 each form a ring-shaped coating, the ring-shaped coatings being arranged concentrically with the disk-shaped coating.

In some embodiments, any two adjacent coating segments 201 are interconnected to increase the surface area of the coating 20, thereby improving the performance of the coating 20.

In some examples, any two adjacent coating segments 201 are an inner coating segment and an outer coating segment, the inner coating segment is located at the inner side of the outer coating segment, the outer side surface of the inner coating segment is connected with the inner side surface of the outer coating segment, and a stepped structure is formed between the outer side surface of the inner coating segment and the inner side surface of the outer coating segment, wherein in the radial direction of the imaginary circle, the thickness of the inner side of the outer coating segment (i.e. the side close to the bottom center of the container body 10) is greater than the thickness of the outer side of the inner coating segment (i.e. the side far away from the bottom center of the container body 10).

That is to say, each coating segment 201 is not a continuous smooth transition in the radial direction, but a corresponding step structure is formed at the joint, that is, the coating segments 201 are arranged in a step manner, so that a core region for generating boiling bubbles can be formed in the region between two adjacent coating segments 201, which is beneficial to rising of bubbles, and most bubbles cannot run toward the side wall of the container 100, thereby increasing the formation of air holes in rice and further improving the taste of the rice.

Because the container body 10 is heated more near the center, the thermal stress of the coating 20 can be reduced and the corrosion resistance of the coating 20 can be improved as above, and the heat transfer capability of the coating 20 can be improved by the cooperation of the coating sections 201, thereby improving the temperature uniformity of the container 100.

In addition, the highest thickness position of each coating segment 201 is arranged at the position close to the inner center line of the coating segment 201, so that the heat conduction capability of the coating segment 201 can be improved, the temperature uniformity of the container 100 at the position can be improved, and furthermore, the position with the highest thickness of two adjacent coating segments 201 is close to the joint of the two coating segments 201, so that the generation of boiling bubbles and the heat conduction are facilitated, and the bonding force of the coating 20 and the non-stick coating/antirust layer can be increased.

In some examples, the width direction of the coating segments 201 extends in a radial direction of the imaginary circle, and the average width of the coating segments 201 decreases gradually from the outside to the inside in a plurality of coating segments 201. This can improve the heat transfer capability and improve the uniformity of heat transfer from the container 100. It should be noted that the inner side surface and the outer side surface of the coating segment 201 are not necessarily formed to be smooth planes or curved surfaces, and therefore, the sizes of the different positions of the coating segment 201 in the radial extension along the imaginary circle are not necessarily equal, and therefore, the average width of the coating segment 201 here is the average value of the sizes of the different positions of the coating segment 201 in the radial extension along the imaginary circle.

In some examples, in the plurality of coating segments 201, the contour line of the cross section of the at least one part of the coating segment 201 away from the container body 10 is L, and the included angle α between the two end points of L and the horizontal plane gradually increases from the outside to the inside. This facilitates the generation of boiling bubbles and the conduction of heat and increases the bonding strength of the coating 20 and the non-stick coating/rust preventive layer. Wherein the cross-section of the coating segment 201 is taken by a vertical plane passing through the central axis of the container body 10.

In some examples, the average thickness of the plurality of coating segments 201 gradually increases in a radial direction of the containment body 10 toward a direction near the bottom center of the containment body 10. Likewise, the average thickness of the coating segment 201 here is the average of the thicknesses of the different positions of the coating segment 201.

For convenience of description, one coating segment 201 located at the inner side of two adjacent coating segments 201 is defined as an inner coating segment, one coating segment 201 located at the outer side is defined as an outer coating segment, the average thickness of the inner coating segment is greater than that of the outer coating segment, and the thickness of the inner coating segment located at the outer side face may be greater than that of the outer coating segment located at the inner side face, or may be less than or equal to that of the outer coating segment located at the inner side face.

As shown in fig. 1 and 2, in some examples, in a plurality of coating segments 201, the thickness h1 of the innermost coating segment 201 on the side near the bottom center of the vessel body 10 is 400um-600um, and the thickness h2 of the innermost coating segment 201 on the side away from the bottom center of the vessel body 10 is 300um-400 um. For example, the h1 can be 400um, 500um, 600um, and the h2 can be 300um, 350um, 400 um.

In some examples, the thickness h3 of the side of the outermost coating segment 201 that is closer to the bottom center of the container body 10 is 60um-200um, and the thickness h4 of the side of the outermost coating segment 201 that is farther from the bottom center of the container body 10 is 30um-60um, among the plurality of coating segments 201. For example, the h3 can be 60um, 100um, 130um, 160um, 200um, the h4 can be 30um, 40um, 50um, 60 um.

Specifically, the container body 10 includes a bottom wall, a side wall and a transition wall, one end of the transition wall is connected with the outer periphery of the bottom wall, the other end of the transition wall is connected with the lower end of the side wall, the transition wall may form a circular arc shape, the coating 20 is provided on the surface of the container body 10, that is, the coating 20 may be provided on the surface of the bottom wall, the surface of the side wall and the surface of the transition wall, and the coating 20 at the bottom wall of the container body 10 is smoothly transited to the coating 20 at the transition wall of the container body 10, and the coating 20 at the transition wall of the container body 10 is smoothly transited to the coating 20 at the side wall of the container body 10.

As shown in fig. 1 and 2, according to a further embodiment of the present invention, the coating layer 20 comprises a first coating layer 21, the first coating layer 21 comprises at least one coating segment 201, and the first coating layer 21 is provided on the inner surface of the container body 10.

Therefore, the first coating 21 is sprayed on the inner surface of the container body 10, so that the thickness of the first coating 21 is gradually increased towards the direction close to the bottom center of the container body 10 along the radial direction of the container body 10, thereby effectively releasing the thermal stress, avoiding the falling off of the first coating 21 and ensuring the use reliability of the first coating 21. Moreover, since the heat quantity near the center of the container body 10 is high, the first coating 21 can accelerate the heat conduction of the first coating 21, and the bottom of the container 100 can be heated uniformly.

In some embodiments, a non-stick coating or rust preventive layer is disposed on the first coating 21. Because a certain concave area is formed between two adjacent coating sections 201 of the first coating 21, and the whole coating sections 201 have a tendency of increasing thickness, on one hand, the bonding force between the non-stick coating or the anti-rust layer and the first coating 21 can be improved, so that the scratch resistance of the non-stick coating or the anti-rust layer is improved; on the other hand, the contact area of the first coating 21 and the non-stick coating can be increased, so that the heat transfer capacity of the first coating 21 to the non-stick coating can be improved, and the corrosion resistance of the non-stick/antirust coating can be improved.

In addition, since the bottom of the container 100 is heated more, the thickness of the non-stick coating at the central position of the bottom of the container body 10 is relatively smaller, which can increase the heat conduction efficiency at that position, and since the non-stick coating at the edge position of the bottom of the container body 10 has a higher possibility of being scratched, the thickness of the non-stick coating at the edge position of the bottom of the container body 10 is relatively larger, which can improve the scratch resistance of the coating. Further, it is also possible to increase the thickness of the rust preventive layer near the bottom edge of the container body 10, thereby reducing the risk of cracking/grinding off of the first coating layer 21 thereat, and improving the scratch performance and rust preventive performance of the container 100.

In some embodiments, the material of the container body 10 is iron or aluminum, and the material of the first coating layer 21 is aluminum or an aluminum alloy. The first coating 21 is at least provided on the inner surface of the bottom of the container body 10, that is, the first coating 21 may be provided on the inner surface of the bottom wall of the container body 10, or may be provided on the entire inner surface of the container body 10.

As shown in fig. 3 and 4, according to a further embodiment of the present invention, the coating layer 20 comprises a second coating layer 22, the second coating layer 22 comprises at least one coating segment 201, and the second coating layer 22 is provided on the outer surface of the container body 10.

Therefore, the second coating 22 is sprayed on the outer surface of the container body 10, so that the thickness of the second coating 22 is gradually increased along the radial direction of the container body 10 towards the direction close to the center of the bottom of the container body 10, thermal stress is effectively released, the second coating 22 is prevented from falling off, the reliability of the second coating 22 is ensured, the boiling effect is improved, and the heating effect of the container 100 is improved.

In some embodiments, the material of the second coating 22 is a magnetically conductive material, i.e., a magnetically conductive layer is formed on the outer surface of the container body 10. By arranging the second coating 22, not only the magnetic permeability can be improved, but also the bonding force between the second coating 22 and the antirust layer can be improved.

In addition, since the electromagnetic intensity of the container body 10 near the center is high and the electromagnetic intensity of the edge is low, the second coating layer 22 can improve the magnetic permeability of the container body and improve the uniformity of heat generation.

Since the magnetic conductive material is usually covered on the container body 10 at the position corresponding to the electromagnetic heating coil, and in order to ensure accurate temperature measurement, it is necessary to ensure the flatness of the bottom center position of the container body 10, so that the temperature sensor is fully contacted with the center position, and the magnetic conductive material is not usually sprayed on the bottom center position of the container body 10. Thus, in some embodiments, the bottom exterior surface of the container body 10 has a centrally located temperature sensing region 101 and a spray region 102 surrounding the temperature sensing region 101, with the second coating 22 being provided on the spray region 102.

According to some embodiments of the present invention, the coating 20 is sprayed on the surface of the container body 10 by a cold spray process, thereby ensuring the reliability of the coating 20. For example, high pressure cold air may be used for spraying. In some specific examples, the high pressure spraying is performed below the melting point of aluminum or aluminum alloy.

One embodiment of a container 100 according to the present invention is described in detail below with reference to fig. 1-4. The container 100 may be a pot, which may be used as an inner pot of an electric rice cooker or an electric pressure cooker, and may also be used in other types of electromagnetic cooking appliances.

As shown in fig. 1 to 4, a container 100 according to an embodiment of the present invention includes a container body 10, a first coating layer 21, a second coating layer 22, a non-stick coating layer 30, and a protective layer 40.

The container body 10 is made of iron, the first coating 21 is made of aluminum or aluminum alloy, and the second coating 22 is made of a magnetic conductive material.

The first coating 21 is sprayed on the inner surface of the container body 10, the non-stick coating 30 is disposed on the outer surface of the first coating 21 and covers the entire inner surface of the container body 10, and the non-stick coating 30 can protect the first coating 21, and also has an anti-pasting effect, so as to improve the cooking effect, for example, if the container 100 is used for cooking rice, the taste of the rice can be improved.

The second coating 22 is sprayed on the outer surface of the container body 10, the protective layer 40 is arranged on the outer surface of the second coating 22 and covers the whole outer surface of the container body 10, and the protective layer 40 can protect the second coating 22 and prevent the second coating 22 from falling off, so that the cooking effect is ensured, and the appearance of the container 100 can be improved.

The thicknesses of the first coating 21 and the second coating 22 are changed periodically, specifically, the first coating 21 and the second coating 22 are respectively provided with at least one annular coating section 201 with the length of L (L < r), the thickness of the annular coating section 201 is continuously changed along the radial direction of the pot body, specifically, the annular coating sections are gradually increased from outside to inside, and a region between two adjacent annular coating sections 201 forms a core region for generating boiling bubbles, so that the rising of the bubbles is facilitated, most of the bubbles cannot run towards the wall of the pot, the air holes of the rice are increased, and the taste of the rice is improved. Because the bottom of the container 100 is heated more intensely than the wall of the pot, the thermal stress generated in the coating 20 is larger, and the first coating 21 structure is adopted, which is beneficial to releasing the thermal stress, thereby improving the durability of the coating.

A cooking appliance (not shown) according to an embodiment of the present invention includes the container 100 according to the above embodiment. The cooking utensil can be an electric cooker or a pressure cooker, etc.

Because the container 100 according to the embodiment of the present invention has the above technical effects, the cooking appliance according to the embodiment of the present invention also has the above technical effects, that is, the utility model discloses a cooking appliance's use reliability is high, the cooking effect is better.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and to simplify the description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Other constructions and operations of the cooking appliance according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above 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.

While embodiments of the present invention 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 to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (22)

1. A container, comprising:

a container body;

the coating is arranged on the surface of the container body, and the thickness of at least one part of the coating is gradually increased towards the direction close to the bottom center of the container body along the radial direction of the container body.

2. The container according to claim 1, wherein the coating comprises at least one coating segment extending in a circumferential direction of an imaginary circle centered on the bottom center of the container body, and wherein at least a part of the coating segment has a thickness gradually increasing in a radial direction of the container body toward a direction near the bottom center of the container body.

3. The vessel according to claim 2, wherein the position in the radial direction of the imaginary circle where the thickness of the coating segments is greatest is offset to the inside of the centre line of the coating segments.

4. The container according to claim 2, wherein the coating segments are one, and in a radial direction of the imaginary circle, a thickness of a side of at least a part of the coating segments closer to the bottom center of the container body is 300um to 600um, and a thickness of a side of at least a part of the coating segments farther from the bottom center of the container body is 30um to 150 um.

5. The vessel according to claim 2, wherein the coating segments are plural, and the plural coating segments are arranged in a radial direction of the imaginary circle.

6. The container of claim 5, wherein any two adjacent coating segments are connected to each other.

7. The vessel according to claim 6, wherein two adjacent coating segments are respectively an inner coating segment and an outer coating segment and a stepped structure is formed between the inner coating segment and the outer coating segment,

wherein, in a radial direction of the imaginary circle, a thickness of a side of the outer coating segments which is closer to a bottom center of the container body is larger than a thickness of a side of the inner coating segments which is farther from the bottom center of the container body.

8. The vessel according to claim 5, wherein, in a plurality of the coating segments, the average width of the coating segments decreases gradually from the outside to the inside.

9. The container according to claim 5, wherein in a plurality of coating segments, the profile line of the cross section of at least one part of the coating segment away from the container body is L, and the included angle between the two end line of L and the horizontal plane is gradually increased from outside to inside.

10. The container according to claim 5, wherein the average thickness of the plurality of coating segments gradually increases in a radial direction of the container body toward a bottom center of the container body.

11. The container according to claim 5, wherein among the plurality of coating segments, a side of the innermost coating segment that is closer to the bottom center of the container body has a thickness of 400um to 600um, and a side of the innermost coating segment that is farther from the bottom center of the container body has a thickness of 300um to 400 um.

12. The container according to claim 5, wherein among the plurality of coating segments, a side of the outermost coating segment near the bottom center of the container body has a thickness of 60um to 200um, and a side of the outermost coating segment away from the bottom center of the container body has a thickness of 30um to 60 um.

13. The container of any of claims 2-12, wherein the coating comprises a first coating layer comprising at least one of the coating segments, the first coating layer being provided on an inner surface of the container body.

14. The container of claim 13, wherein the first coating is provided with a non-stick coating or a rust resistant coating.

15. The container according to claim 13, wherein the material of the container body is iron or aluminum, and the material of the first coating layer is aluminum or an aluminum alloy.

16. The container of claim 13, wherein the first coating is provided on at least an inner surface of the bottom of the container body.

17. The container of any of claims 2-12, wherein the coating comprises a second coating layer comprising at least one of the coating segments, the second coating layer being provided on the outer surface of the container body.

18. The container of claim 17, wherein the material of the second coating is a magnetically permeable material.

19. A container according to claim 17, wherein the bottom external surface of the container body has a centrally located temperature sensing region and a paint region surrounding the temperature sensing region, the second coating being provided on the paint region.

20. The container of claim 1, wherein the coating is sprayed onto the surface of the container body by a cold spray process.

21. The container of claim 1, wherein the container forms a pot.

22. A cooking appliance, characterized in that it comprises a container according to any one of claims 1 to 20.

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