CN115104899A - Cooking container - Google Patents

Abstract

The invention discloses a cooking container, which comprises a container side wall, a container bottom wall and a reinforcing bulge, wherein the container side wall is provided with a plurality of grooves; the container bottom wall is connected with the container side wall and forms an accommodating cavity with an upward opening together with the container side wall in an enclosing manner; the container bottom wall has a meltdown zone; the reinforcing protrusions are arranged on the side, away from the opening, of the bottom wall of the container in a protruding mode, and at least part of the reinforcing protrusions are arranged in the meltallizing area. According to the technical scheme, the bottom wall of the container is provided with the meltallizing area, so that the cooking appliance can adapt to an induction cooker scene. Strengthen protruding locating the meltallizing zone in through at least part to protruding locating container diapire and deviating from open-ended one side, then strengthened the rigidity in the meltallizing zone, avoid the diapire of container to take place great degree deformation at cold and hot alternating in-process.

Description

Cooking container

Technical Field

The invention relates to the technical field of kitchen utensils, in particular to a cooking container.

Background

Cooking container, for example the pan, the effect in the kitchen is very big, can be used for alone holding edible material, can also place and heat the edible material in the cooking container on heating appliances such as electromagnetism stove. Traditional non-magnetic conduction pots such as aluminum pots and ceramic pots do not have a magnetic conduction function and cannot be applied to an induction cooker, in order to enable the cooking containers to be applied to the induction cooker, a meltallizing area is generally arranged at the bottom of the cooking container, and a magnetic conduction layer is meltallized in the meltallizing area. However, conventional meltblowing zones are typically of uniform thickness and are therefore susceptible to deformation during the alternating heating and cooling processes.

Disclosure of Invention

The invention mainly aims to provide a cooking container which aims to solve the problem that a melting and jetting area is easy to deform in the heating and cooling alternating process.

In order to achieve the above object, the present invention provides a cooking container comprising a container sidewall, a container bottom wall and a reinforcing protrusion; the container bottom wall is connected with the container side wall and forms an accommodating cavity with an upward opening together with the container side wall in an enclosing manner; the container bottom wall has a meltdown zone; the reinforcing protrusions are arranged on the side, away from the opening, of the bottom wall of the container in a protruding mode, and at least part of the reinforcing protrusions are arranged in the meltallizing area.

Optionally, the reinforcing protrusion is a closed annular protrusion, and a plurality of the annular protrusions are concentrically arranged.

Optionally, the annular protrusion defining the edge close to the bottom wall of the container is an outer annular protrusion, and an outer edge of a projection of the outer annular protrusion on the bottom wall of the container coincides with an outer edge of the meltdown zone.

Optionally, the vertical distance from the center of the bottom surface of the annular protrusion to the inner surface of the bottom wall of the container is D, and D is greater than or equal to 3mm and less than or equal to 8 mm.

Optionally, an annular groove is formed between every two adjacent annular protrusions, the height of the fall between the bottom surfaces of the annular protrusions and the bottom wall of the annular groove is H, and H is larger than or equal to 0.5mm and smaller than or equal to 2 mm.

Optionally, the spacing distance between two adjacent annular protrusions is L, and L is greater than or equal to 0.5mm and less than or equal to 50 mm.

Optionally, the number of the annular protrusions is N, and N is greater than or equal to 5 and less than or equal to 50.

Optionally, the figure formed by enclosing the annular protrusions is rectangular or circular.

Optionally, the reinforcing protrusion is a plurality of protrusions, the plurality of protrusions are arranged at intervals, and the plurality of protrusions are distributed in a circular array manner or a matrix manner.

Optionally, the cooking vessel is a saucepan or a frying pan.

According to the technical scheme, the meltallizing area is arranged on the bottom wall of the container, so that the cooking appliance can adapt to the scene of the induction cooker. Strengthen protruding locating the meltallizing zone in through at least part to protruding locating container diapire and deviating from open-ended one side, then strengthened the rigidity in the meltallizing zone, avoid the diapire of container to take place great degree deformation at cold and hot alternating in-process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a bottom view of an embodiment of the cooking vessel of the present invention as a saucepan;

FIG. 2 is an enlarged view of a portion of FIG. 1 at B;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3 at C;

FIG. 5 is a partial cross-sectional view of the middle portion of the bottom wall of FIG. 3 with the cooking vessel being a saucepan;

fig. 6 is a partial cross-sectional view of the middle portion of the bottom wall of fig. 3 when the cooking vessel is a fryer.

The reference numbers illustrate:

reference numerals	Name(s)	Reference numerals	Name (R)
				100	Container side wall	200	Container bottom wall
201	Meltdown zone	300	Reinforcing protrusion
				310	Outer ring bulge	400	Annular groove
500	Handle bar

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a cooking container.

In an embodiment of the present invention, please refer to fig. 1 to 3 in combination, the cooking container includes a container sidewall 100, a container bottom wall 200 and a reinforcing protrusion 300; the container bottom wall 200 is connected to the container side wall 100 and forms an accommodating cavity with an upward opening together with the container side wall 100; the container bottom wall 200 has a meltdown zone 201; a plurality of reinforcing protrusions 300 are arranged and are all convexly arranged on one side of the bottom wall 200 of the container, which is far away from the opening, and at least part of the reinforcing protrusions 300 are arranged in the meltallizing area 201.

The container sidewall 100 of the cooking container is connected to the container bottom wall 200, and forms an accommodating cavity with an upward opening together with the container bottom wall 200, so that a user can put food materials into the accommodating cavity from the opening. The cooking container can be placed on a heater for heating, for example, a gas stove or an induction cooker for heating, so as to cook food in the cooking container. Wherein, the cooking container can be a stainless steel pot, an aluminum pot or a ceramic pot, etc. It can be understood that, in order to facilitate the aluminum pot and the ceramic pot to be heated on the induction cooker, the bottom of the aluminum pot and the ceramic pot can be limited with a meltallizing region 201, and the meltallizing region 201 is internally meltallized with a magnetic conduction layer, so that the aluminum pot and the ceramic pot can be heated by the induction cooker, and further the food material is cooked.

Specifically, since the bottom wall of the cooking container is closer to the induction cooker, the meltdown zone 201 may be provided at the container bottom wall 200 of the cooking container. It should be noted that only the meltallizing zone 201 in which the magnetic conductive layer is meltallized can be heated by the induction cooker, and therefore, in order to have a better heating effect, the area of the meltallizing zone 201 can be set to be not less than the area of the heating plate of the induction cooker, so that the heating zone on the container bottom wall 200 is at least equal to the area of the heating plate of the induction cooker, thereby improving the heating efficiency and having a more uniform heating effect.

It will be appreciated that the meltallizing zone 201 of the container bottom wall 200 is typically heated and cooled, and therefore the meltallizing zone 201 is susceptible to deformation when heating and cooling are alternated. In the technical scheme of the invention, the side of the bottom wall 200 of the container, which is far away from the opening, is provided with the plurality of reinforcing protrusions 300, and at least part of the reinforcing protrusions 300 are arranged in the meltallizing area 201, so that the rigidity of the meltallizing area 201 can be enhanced, and the situation that the bottom wall 200 of the container is easy to deform in the heating and cooling alternating process can be improved. In addition, it can be understood that, by providing a plurality of reinforcing protrusions 300, the distance from the gap between two adjacent reinforcing protrusions 300 to the induction cooker is increased, thereby avoiding the situation that the gap between two adjacent reinforcing protrusions 300 is easily deformed due to too high temperature. Specifically, the reinforcing protrusion 300 may be a reinforcing block, a reinforcing rib, a reinforcing ring, or the like, wherein the reinforcing rib may be linear, arc, circular, or the like. The plurality of reinforcing protrusions 300 may be entirely disposed within the meltdown region 201; only a portion of the reinforcing protrusion 300 may be disposed in the meltallizing zone 201, and the other portion of the reinforcing protrusion 300 may be disposed outside the meltallizing zone 201, as long as it is ensured that at least the meltallizing zone 201 is provided with the reinforcing protrusion 300 therein. Based on the scheme that the reinforcing protrusion 300 is disposed in the meltallizing region 201, it should be noted that the surface of the reinforcing protrusion 300 may be sprayed with a magnetic conductive layer or may not be sprayed with a magnetic conductive layer. Preferably, in order to facilitate the expansion of the heating range, a magnetic conductive layer may be also sprayed on the surface of the reinforcing protrusion 300. Specifically, the magnetic conduction layer is an iron sand layer or a stainless steel layer containing ferrite. It can be understood that the induction cooker is a cooking appliance made by using the principle of electromagnetic induction heating. Therefore, in order to heat the food in the cooking container, it is necessary to provide at least a magnetic conductive material on the cooking container. In this embodiment, through setting up the magnetic conduction layer into the iron sand layer, then when being convenient for the culinary art container to place on the electromagnetism stove, the back is opened to the electromagnetism stove, and alternating current that heating coil in the electromagnetism stove lets in can produce alternating magnetic field. Because the magnetic conduction layer of container diapire is iron sand layer, consequently this iron sand layer can supply alternating magnetic field's magnetic induction line to pass to form a large amount of eddies here, and then produce and convert the heat and heat the food in the culinary art container.

According to the technical scheme, the meltallizing area 201 is arranged on the bottom wall 200 of the container, so that the cooking container can adapt to an induction cooker scene. Through at least partly strengthening protruding 300 and locating in meltallizing zone 201 to protruding locate container diapire 200 and deviate from open-ended one side, then strengthened the rigidity in meltallizing zone 201, avoid the diapire of container to take place great degree deformation in cold and hot alternating process.

In an embodiment, referring to fig. 1 and fig. 2, the reinforcing protrusion 300 is a closed annular protrusion, and a plurality of annular protrusions are concentrically disposed.

Through will strengthen protruding 300 and set up to confined annular protruding, the rigidity of meltalling upon fire district 201 can all-roundly be improved to annular protruding for the diapire of container all has higher rigidity in all directions, avoids appearing serious deformation in certain direction. Further, a plurality of annular bulges are concentrically arranged, so that the width sizes of gaps formed between every two adjacent annular bulges are equal, the effect that the rigidity of each part of the meltalling area 201 of the bottom wall 200 of the container is uniform is further ensured, and the conditions that the rigidity of one side of the meltalling area 201 is high and the rigidity of the other side is weak are avoided.

It should be noted that, the plurality of annular protrusions are concentrically arranged, which means that the center points of the annular protrusions coincide with each other. Specifically, the patterns formed by enclosing the annular protrusions may be the same, for example, the patterns formed by enclosing the annular protrusions are all rectangles, or the patterns formed by enclosing the annular protrusions are all circles, or the patterns formed by enclosing the annular protrusions are all pentagons, hexagons, and the like. Of course, the shape of the figure formed by enclosing at least two annular protrusions of the plurality of annular protrusions may be different, for example, the shape of the figure formed by enclosing at least two annular protrusions may be circular and rectangular respectively, and the center of the circular shape coincides with the center of the rectangular shape.

In addition, the shape of the meltdown zone 201 may be the same as the shape defined by the surrounding annular protrusion. For example, the shape of the meltdown zone 201 is rectangular, and the shape formed by enclosing the annular protrusion is also rectangular; alternatively, the shape of the meltdown zone 201 is circular, and the shape formed by the encircling of the annular protrusion is also circular. Of course, the shape of the meltdown zone 201 may be different from the shape defined by the surrounding annular protrusion. For example, the shape of the meltdown zone 201 is rectangular, and the shape formed by enclosing the annular protrusion is a non-rectangular shape such as a circle or a triangle; alternatively, the shape of the meltdown region 201 is circular, and the shape formed by enclosing the annular protrusion is a non-circular shape such as a rectangle or a triangle.

Further, in order to further ensure that the rigidity of each point in the meltallizing zone 201, which is the same as the center of the meltallizing zone 201, the center of the annular protrusion may coincide with the center of the meltallizing zone 201, that is, the center of each annular protrusion is the center of the meltallizing zone 201.

Further, as shown in fig. 1, the annular protrusion defined near the edge of the container bottom wall 200 is an outer annular protrusion 310, and the outer edge of the projection of the outer annular protrusion 310 on the container bottom wall 200 coincides with the outer edge of the meltdown zone 201.

It will be understood that when a plurality of annular protrusions are provided, and the plurality of annular protrusions are concentrically arranged, there is one annular protrusion provided at the outermost ring, i.e., the annular protrusion near the edge of the container bottom wall 200, and the annular protrusion near the edge of the container bottom wall 200 is defined as the outer ring protrusion 310 in this embodiment. By arranging the outer edge of the projection of the outer annular projection 310 on the container bottom wall 200 to coincide with the outer edge of the meltdown zone 201, the edge portion of the meltdown zone 201 can also be reinforced by the arrangement of the annular projection, so that the overall rigidity of the meltdown zone 201 is further improved. Moreover, on the premise of ensuring the rigidity of the meltallizing zone 201 as much as possible, the effect of reducing the cost for arranging the annular protrusion is also achieved. The outer ring protrusion 310 in this embodiment can also play a role in limiting the meltallizing device to the container bottom wall 200, so as to ensure that the magnetic conduction layer is precisely meltallized in the limited meltallizing region 201.

Of course, in other embodiments, the outer edge of the projection of outer annular projection 310 on container bottom wall 200 may also fall inside meltallizing zone 201, or fall outside meltallizing zone 201.

Further, referring to fig. 3 and 4, the vertical distance from the center of the bottom surface of the annular protrusion to the inner surface of the bottom wall 200 of the container is D, and D is greater than or equal to 3mm and less than or equal to 8 mm.

Specifically, the vertical distance D from the bottom center of the annular protrusion to the inner surface of the container bottom wall 200 may be 3mm, 4mm, 5mm, 6mm, 7mm, or 8 mm. Note that the vertical direction in the present embodiment refers to a direction parallel to the opening direction. By setting the vertical distance D from the center of the bottom surface of the annular projection to the inner surface of the bottom wall 200 of the container to not less than 3mm, the bottom of the cooking container is made thicker, thereby ensuring better resistance to deformation of the cooking container. By setting the vertical distance D from the center of the bottom surface of the annular protrusion to the inner surface of the bottom wall 200 of the container to be not more than 8mm, on one hand, the fall between the bottom surface of the annular protrusion and the bottom wall of the groove formed between the two annular protrusions is small, so that the whole meltalling region 201 can be heated by the electromagnetic heating effect of the induction cooker to realize a large heating surface; on the other hand, the cost of the cooking container is reduced.

Further, as shown in fig. 4, an annular groove 400 is formed between two adjacent annular protrusions, the height of the fall from the bottom surface of the annular protrusion to the bottom wall of the annular groove 400 is H, and H is greater than or equal to 0.5mm and less than or equal to 2 mm.

Specifically, the height H of the fall from the bottom surface of the annular protrusion to the bottom wall of the groove may be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, or the like. By setting the height H of the fall from the bottom surface of the annular protrusion to the bottom wall of the annular groove 400 to not less than 0.5mm, processing is facilitated. The height H of the fall between the bottom surface of the annular protrusion and the bottom wall of the annular groove 400 is set to be not more than 2mm, so that the height of the fall is not too large, and the situation that the bottom wall of the annular groove 400 is far away from the induction cooker and cannot be heated by the induction cooker is avoided.

Further, as shown in FIG. 4, the distance between two adjacent annular protrusions is L, and L is greater than or equal to 0.5mm and less than or equal to 50 mm.

Specifically, the spacing distance L between two adjacent annular protrusions may be 0.5mm, 1mm, 1.5mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm, 34mm, 35mm, 36mm, 37mm, 38mm, 39mm, 40mm, 41mm, 42mm, 43mm, 44mm, 45mm, 46mm, 47mm, 48mm, 49mm, 50mm, or the like. By setting the spacing distance between two adjacent annular protrusions to be not less than 0.5mm, the situation that the adjacent annular protrusions are difficult to form at intervals is avoided. By setting the spacing distance L between two adjacent annular protrusions to be not more than 50mm, the situation that the number of annular protrusions is extremely small due to a small space reserved for setting the annular protrusions in the meltallizing zone 201, or even the annular protrusions cannot form a complete closed loop shape is avoided.

Further, the cooking container in the technical scheme of the invention can be a frying pan or a boiling pan. When the cooking container is a frying pan, the temperature at the bottom of the frying pan is higher due to the oil in the frying pan, so that the risk of deformation is more likely to occur; in this case, a smaller width value can be selected by setting the spacing distance between two adjacent annular protrusions within the above range, for example, L is selected from a range of 0.5mm ≦ L ≦ 30 mm. When the cooking container is a saucepan, because the temperature of the bottom of the saucepan is lower than that of the bottom of the saucepan, a larger width value can be selected by selecting the gap between two adjacent annular protrusions within the above range, for example, the selectable range of L is 20mm ≦ L ≦ 50 mm.

Further, as shown in FIG. 1, the number of the annular protrusions is N, and N is more than or equal to 5 and less than or equal to 50.

In particular, the number of annular protrusions may be 5, 10, 15, 20, 25, 30, 35, 40, 45 or 50. It will be appreciated that within a given meltdown zone 201, a greater number of annular projections results in a stiffer meltdown zone 201, and thus a better view of deformability. By setting the number of the annular projections to not less than 5, the number of the annular projections is not too small, and the gap between two adjacent annular projections is not too large, so that the bottom wall 200 of the container having the meltallizing region 201 has high rigidity. By setting the number of the annular protrusions to be not more than 50, the problem that each annular protrusion cannot have strong rigidity due to narrow section width of a single annular protrusion is avoided; in addition, the phenomenon that the width of a gap between two adjacent annular bulges is too small, so that the forming process is difficult is avoided.

In another embodiment, the reinforcing protrusions 300 are bumps, a plurality of bumps are disposed at intervals, and the plurality of bumps are distributed in a circular array manner or a matrix manner.

Through will strengthening protruding 300 and setting up to the lug, a plurality of lugs interval sets up and is circular array mode and distributes, can form confined figure behind the line of the center of making a plurality of lugs to also can guarantee that the position that the corresponding lug that is equipped with in meltalling shooting district 201, its rigidity is comparatively unanimous.

Through being distributed a plurality of lugs in the form of matrix, then can make a plurality of lugs evenly spread in meltallizing zone 201 to guarantee that meltallizing zone 201 each position has higher rigidity, and each position rigidity value is comparatively unanimous.

Further, in order to avoid the magnetic conduction layer falling caused by the friction between the reinforcing protrusion 300 with the magnetic conduction layer sprayed thereon and the surface of the induction cooker, in this embodiment, the outer surface of the bottom wall 200 of the container may further be provided with a supporting protrusion (not shown), and the bottom surface of the supporting protrusion is lower than the bottom surface of the reinforcing protrusion 300, so that a space layer is formed between the bottom surface of the reinforcing protrusion 300 and the surface of the induction cooker, and the induction cooker is prevented from rubbing the bottom surface of the reinforcing protrusion 300 to cause the magnetic conduction layer on the bottom surface of the reinforcing protrusion 300 to fall. Specifically, the container bottom wall 200 further has a non-meltallizing zone 201 surrounding the meltallizing zone 201, and the support protrusion is provided in the non-meltallizing zone 201.

It should be noted that, in the technical solution of the present invention, the inner surface is a surface contacting with the food material, and the outer surface is a surface of the cooking container facing away from the food material.

In the technical scheme of the invention, the cooking container is a saucepan or a frying pan.

Typically, the depth of the saucepan is deeper than the depth of the frying pan. The depth of the saucepan is generally not less than 60mm and not more than 200mm, and the depth of the frying pan is generally not less than 10mm and not more than 60 mm.

Further, when the cooking container is a saucepan, as shown in fig. 5, the outer surface of the container bottom wall 200 of the cooking container is an upwardly concave arc surface. So arranged, the container bottom wall 200 will have a tendency to continue to deform upwardly as it expands when heated, which deformation avoids the risk of the cooking container being unstable in its placement for the saucepan. Specifically, when the container bottom wall 200 has a plurality of concentrically arranged annular projections, the bottom surface of one of every two adjacent annular projections closer to the edge of the container bottom wall 200 is also arranged lower than the bottom surface of the annular projection farther from the edge of the container bottom wall 200.

When the cooking vessel is a frying pan, as shown in fig. 6, the inner surface of the vessel bottom wall 200 of the cooking vessel is a downwardly concave arc surface. With such an arrangement, when the bottom wall 200 of the container is expanded by heat, the bottom wall will have a tendency of continuously deforming downwards, and for the saucepan, the deformation can prevent the oil in the cooking container from flowing to the edge and the better frying and roasting effect on the food materials cannot be realized.

Further, as shown in fig. 1, the cooking container in the present invention further includes a handle 500, and the handle 500 is connected to an end of the side wall of the container away from the bottom wall of the container. Wherein, one handle 500 may be provided, or two handles 500 are provided and the two handles 500 are symmetrically arranged about the central axis of the cooking container, so that the user can place the cooking container. Specifically, the handle 500 may be connected to the sidewall of the container in an integrated manner, thereby improving the firmness of the handle 500. Or the handle 500 may be detachably connected to the sidewall of the container, so as to facilitate the detachment of the handle 500. The handle 500 may be made of a material with poor thermal conductivity, such as silicone, wood, or rubber.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A cooking container, comprising:

a container sidewall;

the container bottom wall is connected with the container side wall and forms an accommodating cavity with an upward opening together with the container side wall in an enclosing manner; the container bottom wall has a meltdown zone; and

strengthen the arch, it is equipped with a plurality ofly to strengthen the arch to all protruding locating the container diapire deviates from open-ended one side, at least part strengthen protruding locating in the meltalling zone.

2. The cooking container of claim 1, wherein said reinforcing protrusion is a closed annular protrusion, and a plurality of said annular protrusions are concentrically arranged.

3. The cooking vessel according to claim 2 wherein said annular projection defining an edge adjacent said vessel bottom wall is an outer annular projection, the outer edge of the projection of said outer annular projection on said vessel bottom wall coinciding with the outer edge of said meltdown zone.

4. The cooking container of claim 3, wherein a vertical distance D from a center of a bottom surface of the annular protrusion to an inner surface of the bottom wall of the container is 3mm ≦ D ≦ 8 mm.

5. The cooking container of claim 4, wherein an annular groove is formed between two adjacent annular protrusions, the height of the fall between the bottom surface of each annular protrusion and the bottom wall of the annular groove is H, and H is greater than or equal to 0.5mm and less than or equal to 2 mm.

6. The cooking container of claim 4, wherein the distance between two adjacent annular protrusions is L, and L is greater than or equal to 0.5mm and less than or equal to 50 mm.

7. The cooking container of claim 4, wherein the number of the annular protrusions is N, and N is 5. ltoreq. N.ltoreq.50.

8. The cooking container according to any one of claims 2 to 7, wherein the annular protrusion is enclosed to form a rectangular or circular pattern.

9. The cooking container of claim 1, wherein the reinforcing protrusion is a protrusion, a plurality of the protrusions are spaced apart from each other, and the plurality of the protrusions are distributed in a circular array or a matrix.

10. Cooking vessel according to claim 1, wherein the cooking vessel is a saucepan or a frying pan.

Images