CN113116118B

CN113116118B - Container and cooking utensil

Info

Publication number: CN113116118B
Application number: CN201911418261.4A
Authority: CN
Inventors: 曹达华; 李兴航; 周瑜杰; 王婷; 杨玲
Original assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2022-12-02
Anticipated expiration: 2039-12-31
Also published as: CN113116118A

Abstract

The invention discloses a container and a cooking utensil, wherein the container comprises: the container comprises a container body and a coating, wherein the container body defines a cavity with an open top, 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 container provided by the embodiment of the invention, the coating is sprayed on the surface of the container body, so that the thickness 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, the thermal stress is effectively released, the coating is prevented from falling off, and the reliability of the coating is ensured.

Description

Container and cooking utensil

Technical Field

The invention relates to the technical field of household appliances, in particular to a container and a cooking appliance.

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.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the invention to propose a container which improves the problem of thermal stress concentrations and has a good heating effect.

The invention also provides a cooking appliance with the container.

A container according to an embodiment of the first aspect of the invention comprises: a container body defining a chamber having a top opening; 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 along the radial direction of the container body towards the direction close to the bottom center of the container body.

According to the container provided by the embodiment of the invention, the coating is sprayed on the surface of the container body, and the thickness of the coating is gradually increased towards the direction close to the center of the bottom of the container body along the radial direction of the container body, so that the corrosion resistance of the coating can be improved, the thermal stress can be effectively released, the coating is prevented from falling off, and the reliability of the coating is ensured.

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 container body, and at least a part of the coating segment has a thickness gradually increasing in a radial direction of the container body towards a direction close to the bottom center of the container 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 portion of the coating segments closer to the bottom center of the container body has a thickness of 300um to 600um, and a side of the at least a portion of the coating segments farther from the bottom center of the container body has a thickness of 30um to 150um.

In other embodiments, the coating segments are multiple, and the 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 400um.

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 60um.

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

In some embodiments, a non-stick coating or a rust preventative coating 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 further specific embodiments of the present invention, the coating comprises a second coating layer, the 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.

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 onto the surface of the container body by a cold spray process.

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

A cooking appliance according to an embodiment of the second aspect of the invention comprises a container according to the above-described 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 one 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,

a container body 10, a temperature measuring area 101, a 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 or similar 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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to 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 to 4, a container 100 according to an embodiment of the present invention includes a container body 10 and a coating layer 20, and the container body 10 defines a chamber having a top opening, thereby facilitating access to food materials. The coating 20 is provided on the surface of the container body 10, and specifically, the coating 20 may be provided on the inner surface of the container body 10 or on the 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 container 100 of the embodiment of the invention, the coating 20 is sprayed on the surface of the container body 10, and the thickness of the coating 20 is set to be gradually increased along the radial direction of the container body 10 towards the direction close to the bottom center of the container body 10, so that not only can the corrosion resistance of the coating be improved, but also the thermal stress can be effectively released, the coating 20 is prevented from falling off, and the reliability of the coating 20 is ensured.

According to some embodiments of the present invention, the coating layer 20 comprises at least one coating segment 201, and the coating segment 201 extends along the 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.

Two adjacent coating segments 201 may have smooth transition, or may form a zigzag structure or a stepped 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 150um.

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

For ease of understanding, a section of the coating segment 201 in a 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, that is, the section has the largest thickness at the inner side (i.e., a side surface close to the bottom center of the container body 10) and the smallest thickness at the outer side (i.e., a 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 vessel 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 vessel 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, respectively, the inner coating segment is located inside the outer coating segment, and 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 away from the bottom center of the container body 10).

That is to say, each coating segment 201 does not make a continuous smooth transition in the radial direction, but forms a corresponding step structure 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 a 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, so as to increase the formation of air holes in the cooked rice, and further improve the taste of the cooked 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 as smooth flat surfaces or curved surfaces, and therefore the sizes of the different positions of the coating segment 201 in the radial direction of 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 direction of 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 direction toward the bottom center of the containment body 10 in a radial direction 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, among the plurality of coating segments 201, the thickness h1 of the innermost coating segment 201 on the side close to the bottom center of the vessel body 10 is 400um to 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 to 400um. For example, h1 can be 400um, 500um, 600um, and h2 can be 300um, 350um, 400um.

In some examples, among the plurality of coating segments 201, the outermost coating segment 201 has a thickness h3 of 60um to 200um on a side close to the bottom center of the container body 10, and the outermost coating segment 201 has a thickness h4 of 30um to 60um on a side away from the bottom center of the container body 10. For example, h3 can be 60um, 100um, 130um, 160um, 200um, and h4 can be 30um, 40um, 50um, 60um.

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.

According to a further embodiment of the invention, as shown in fig. 1 and 2, the coating 20 comprises a first coating layer 21, the first coating layer 21 comprising at least one coating segment 201, the first coating layer 21 being provided on an 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 antirust layer and the first coating 21 can be improved, so that the scratch resistance of the non-stick coating or the antirust 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 scraping 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 usually not 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 layer 20 is sprayed on the surface of the container body 10 through a cold spray process, thereby securing the reliability of the coating layer 20. For example, high pressure cold gas 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-described embodiment. The cooking utensil can be an electric cooker or a pressure cooker, etc.

Since 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 cooking appliance of the present invention has high use reliability and better cooking effect.

In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

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

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means 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 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

1. A container, comprising:

a container body defining a chamber having a top opening;

the coating is arranged on the surface of the container body, the thickness of at least one part of the coating gradually increases along the radial direction of the container body towards the direction close to the bottom center of the container body, the coating comprises at least one coating section, the coating section extends along the circumferential direction of an imaginary circle with the bottom center of the container body as the center, the thickness of at least one part of the coating section gradually increases along the radial direction of the container body towards the direction close to the bottom center of the container body, the coating sections are multiple, the coating sections are distributed along the radial direction of the imaginary circle, any two adjacent coating sections are connected with each other, the two adjacent coating sections are respectively an inner coating section and an outer coating section, and a stepped structure is formed between the two adjacent coating sections, wherein in the radial direction of the imaginary circle, the thickness of one side, close to the bottom center of the container body, of the outer coating section is larger than the thickness of one side, far away from the bottom center of the container body, of the inner coating section.

2. The vessel according to claim 1, 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.

3. The container according to claim 1, wherein the coating segments are one, and in a radial direction of the imaginary circle, a thickness of a side of the at least a part of the coating segments closer to the bottom center of the container body is 300um-600um, and a thickness of a side of the at least a part of the coating segments farther from the bottom center of the container body is 30um-150um.

4. The vessel according to claim 1, wherein, in a plurality of the coating segments, the average width of the coating segments decreases gradually from the outside to the inside.

5. The container according to claim 1, wherein in a plurality of the coating segments, the profile line of the cross section of at least one part of the coating segments away from the container body is L, and the included angle between the two end connecting lines of L and the horizontal plane is gradually increased from outside to inside.

6. The container of claim 1, wherein the average thickness of the plurality of coating segments increases in a direction toward a bottom center of the container body in a radial direction of the container body.

7. The container according to claim 1, wherein in 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 400um.

8. The container according to claim 1, 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 60um.

9. The container according to any of claims 1-8, 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.

10. The container of claim 9, wherein the first coating is provided with a non-stick coating or a rust resistant coating.

11. The container according to claim 9, 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.

12. The container of claim 9, wherein the first coating is provided on at least an inner surface of the bottom of the container body.

13. The container according to any one of claims 1-8, 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.

14. The container of claim 13, wherein the material of the second coating is a magnetically permeable material.

15. A container according to claim 13, 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.

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

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

18. A cooking appliance, characterized in that it comprises a container according to any one of claims 1 to 17.