Rice cooking utensils

Abstract

The rice cooking utensil comprises a pot body (10), a lid (20), and an inner pot (30), the inner pot (30) being detachably attached to the pot body (10), the inside of the inner pot (30) being in contact with rice via a metal layer, the inner pot (30) comprising a bottom wall (31) and a side wall (32), and hydrophilic patterns are arranged on the inner surface of the inner pot (30), each of which comprises an independent rice slurry groove, a first hydrophilic pattern being provided on the bottom wall (31), and a second hydrophilic pattern being provided on the side wall (32), and the hydrophilic ability of the second hydrophilic pattern being smaller than that of the first hydrophilic pattern. As a result, the inner wall of the zero-coating inner pot (30) can collect some of the rice slurry between the rice and the inner wall after cooking is completed, increasing its hydrophilicity. The first hydrophilic pattern located on the bottom wall (31) mainly plays a role in maintaining the water film to prevent the water film on the heat-receiving part of the inner pot (30) from disappearing quickly, thereby maintaining non-stickiness during long-term heat retention. Since the hydrophilic ability of the second hydrophilic pattern is weaker than that of the first hydrophilic pattern, the water film retention ability of the side wall (32) is weaker than that of the bottom wall (31), thereby preventing the rice on the side wall (32) from becoming over-moistened, resulting in high viscosity and easy residue.

Description

[Technical Field]

[0001] This application claims priority from a Chinese patent application filed with the China Patent Office on December 5, 2022, bearing application number CN202211545542.8 and entitled "Rice Cooking Apparatus," the entire contents of which are incorporated herein by reference.

[0002] The present application belongs to the technical field of kitchen appliances, and in particular to rice cookers. [Background technology]

[0003] Conventional rice cookers, such as rice cookers and pressure rice cookers, have zero-coating inner pots, such as stainless steel inner pots, which can achieve a certain level of non-stick performance by creating a water film between the inner pot and the rice. However, stainless steel inner pots achieve non-stick performance by relying on the presence of a water film, and the water film easily disappears due to the heat-receiving part of the bottom wall. On the other hand, the side walls receive less heat, so there is a tendency for too much moisture to build up, causing the rice to become over-gelatinized. As a result, the rice on the bottom wall loses its water film after being kept warm for a long time, making it prone to burning and forming lumps, and the rice on the side walls has a high viscosity, making it prone to leaving rice grains and clumps. Summary of the Invention [Problem to be solved by the invention]

[0004] The present application provides a rice cooking utensil that solves at least one of the above technical problems. [Means for solving the problem]

[0005] The technical solutions adopted in this application are as follows:

[0006] The present application provides a rice cooking utensil, comprising a pot body, a lid, and an inner pot, the inner pot being detachably attached to the pot body, the inside of the inner pot being in contact with rice via a metal layer, the inner pot comprising a bottom wall and a side wall, an array of hydrophilic patterns on the inner surface of the inner pot, the hydrophilic patterns comprising independent rice slurry grooves, a first hydrophilic pattern on the bottom wall, and a second hydrophilic pattern on the side wall, the hydrophilic ability of the second hydrophilic pattern being less than that of the first hydrophilic pattern.

[0007] In a preferred embodiment of the present application, the first hydrophilic pattern includes a first rice slurry groove, the second hydrophilic pattern includes a second rice slurry groove, the shape of the first rice slurry groove is obtained by arranging and transforming in the side wall to obtain the shape of the second rice slurry groove, the second rice slurry groove has at least a vertical dimension obtained by transformation along the depth direction of the side wall, and the horizontal dimension is smaller than the original vertical dimension of the first rice slurry groove before transformation.

[0008] In a preferred embodiment of the present application, the second rice slurry groove includes at least a lateral dimension obtained by transformation along the circumferential direction of the side wall, and the longitudinal dimension is larger than the original lateral dimension of the first rice slurry groove before transformation.

[0009] In a preferred embodiment of the present application, the longitudinal dimension is greater than the lateral dimension.

[0010] In a preferred embodiment of the present application, the second hydrophilic pattern is arranged on the side wall in a first array structure, and the first array structure has arcuate array lines, and the arcuate array lines include at least array segments extending toward the bottom wall.

[0011] In a preferred embodiment of the present application, the arrangement density of the rice slurry grooves on the inner surface of the inner pot is 8 to 2500 grooves per square centimeter.

[0012] In a preferred embodiment of the present application, a partition structure is provided between adjacent rice slurry grooves so that each of the rice slurry grooves is independently installed.

[0013] In a preferred embodiment of the present application, in the group of arranged units each including the rice slurry groove and the partition structure, the area occupied by the rice slurry groove is larger than the area occupied by the partition structure.

[0014] In a preferred embodiment of the present application, the range of the value of the ratio b / a of the vertical dimension to the original vertical dimension is 1

[0015] In a preferred embodiment of the present application, the range of the value of the ratio d / c of ​​the lateral dimension to the original lateral dimension is 0.3≦d / c<1.

[0016] By adopting the above technical solution, the beneficial effects obtained by the present application are as follows:

[0017] The inner surface of the inner pot is arranged with hydrophilic patterns, with a first hydrophilic pattern on the bottom wall and a second hydrophilic pattern on the side wall, each with its own independent rice slurry grooves. This allows the inner wall of the zero-coating inner pot to collect some of the rice slurry between the rice and the inner wall after cooking is complete, increasing its hydrophilicity. The first hydrophilic pattern located on the bottom wall mainly plays a role in maintaining the water film to prevent the water film on the heat-receiving part of the inner pot from disappearing too quickly, thereby maintaining non-stickiness during long-term keeping-warm process. The second hydrophilic pattern has a lower hydrophilic ability than the first hydrophilic pattern, so the water film maintenance ability of the side wall is lower than that of the bottom wall. This prevents the rice on the side wall from becoming over-moistened, resulting in high viscosity and easy residue. [Brief explanation of the drawings]

[0018] The drawings described herein are included to provide a further understanding of the present application, constitute a part of the present application, and the illustrative embodiments and description thereof are intended to be illustrative, not limiting, of the present application.​ [Figure 1] 1 is a cross-sectional view of a cooking utensil provided by an embodiment of the present application. [Figure 2] FIG. 2 is a cross-sectional view of an inner pot provided by an embodiment of the present application. [Figure 3] FIG. 1 is a plan view of an inner pot structure provided by an embodiment of the present application. [Figure 4-1] FIG. 2 is a schematic diagram of the S1-bottom in Example 1 of the present application. [Figure 4-2] FIG. 2 is a schematic local view of the S1-side in Example 1 of the present application. [Figure 5-1] FIG. 1 is a schematic diagram of the S2-bottom provided by Example 2 of the present application. [Figure 5-2] FIG. 1 is a schematic diagram of the S2-side-1 provided by Example 2 of the present application. [Figure 5-3] FIG. 1 is a schematic diagram of the S2-side-2 provided by Example 2 of the present application. [Figure 6-1] FIG. 1 is a schematic diagram of the S3-bottom provided by Example 3 of the present application. [Figure 6-2] FIG. 1 is a schematic diagram of the S3-side-1 region provided by Example 3 of the present application. [Figure 6-3] FIG. 1 is a schematic diagram of the S3-side-2 region provided by Example 3 of the present application. [Figure 7] 1 is a schematic diagram of an arcuate array line provided by an embodiment of the present application; [Figure 8] 1 is a schematic diagram of a partition structure provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to more clearly understand the overall concept of the present application, the following detailed description is given by way of examples in conjunction with the drawings.

[0020] In the following description, many specific details are set forth for the convenience of a thorough understanding of the present application; however, the present application may also be implemented in other ways different from those described herein, and therefore the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0021] Furthermore, in the description of this application, the orientations or positional relationships indicated by terms such as "top," "bottom," "inner," "outer," "axial direction," "radial direction," and "circumferential direction" are orientations or positional relationships shown based on the drawings, and are merely for the convenience of explaining and simplifying the description of this application. It is not intended to indicate or imply that the referenced devices or elements have a specific orientation or must be configured and operated in a specific orientation, and therefore should not be understood as limiting this application.

[0022] In this application, unless otherwise clearly defined or limited, the terms "attached," "coupled," "connected," "fixed," etc. should be interpreted broadly, and may refer to, for example, a fixed connection, a detachable connection, or integration, a mechanical connection, an electrical connection, communication, a direct connection, an indirect connection via an intermediate medium, internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art can understand the specific meanings of the above terms in this application according to specific circumstances.

[0023] Unless otherwise expressly specified or limited, in this application, a first feature being "above" or "below" a second feature may mean that the first feature and the second feature are in direct contact with each other, or that the first feature and the second feature are in indirect contact with each other via an intermediate medium. In this specification, references to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" mean that the specific features, structures, materials, or features described in the embodiment or example are combined or included in at least one embodiment or example of this application. In this specification, schematic expressions for the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or features described may be combined in any suitable manner in any one or more embodiments or examples.

[0024] The present application provides a rice cooking appliance, which may be a rice cooker or a pressure cooker, or in some other embodiments, may be other cooking appliances that are capable of cooking rice.

[0025] Referring to Figure 1, a rice cooker is shown, which has a pot body 10, a lid body 20, and an inner pot 30. The inner pot 30 is installed inside the pot body 10, and the inside of the inner pot 30 comes into contact with the rice through a metal layer. The lid body 20 is covered by the pot body 10, and the pot body 10 is equipped with a heating device 105 for heating the inner pot 30. During the cooking process, a mixture of rice and water is placed in the cooking chamber 301 inside the inner pot 30, and the cooking of the rice is completed by heating the heating device 105 at the bottom of the inner pot 30.

[0026] In a specific embodiment of the present application, the cookware cooks rice in an uncoated or zero-coated inner pot. Most conventional inner pots are coated inner pots, that is, the inner surface of the inner pot is coated with Teflon (scientific name: polytetrafluoroethylene, abbreviated as PTFE). The uncoated inner pot of the present application, unlike the coated inner pots, does not have a coating on the base material of the inner pot. Therefore, the inner wall of the inner pot is a metal layer that can come into contact with food, which may be stainless steel. During cooking, food comes into direct contact with and cooks through the metal layer of the inner pot, thereby eliminating the coating peeling off of coated inner pots and the health issues associated with the coating itself.

[0027] Conventional zero-coating inner pots, such as stainless steel inner pots, can achieve a certain level of non-stick performance by creating a water film between the inner pot and the rice. However, stainless steel inner pots achieve non-stick performance by relying on the presence of a water film, and the water film easily disappears due to the heat-receiving part of the bottom wall. On the other hand, the side walls receive less heat, so there is a tendency for too much moisture to form, causing the rice to become over-gelatinized. As a result, the rice on the bottom wall loses its water film after being kept warm for a long time, making it prone to burning and forming lumps, and the rice on the side walls has a high viscosity, making it prone to leaving rice grains and clumps.

[0028] To solve the problem that rice on the bottom wall of the zero-coated inner pot tends to stick to the pot after being kept warm for a long time, and rice on the side wall tends to remain viscous and difficult to clean, the inner pot of the rice cooker of this application is specifically installed as follows:

[0029] 1, 2, and 3, the inner pot 30 includes a bottom wall 31, a side wall 32, and a cooking chamber 301. The cooking chamber 301 is open at the top, and the side wall 32 extends from the bottom wall 31 toward the opening of the cooking chamber 301 in a depth direction and along the circumferential direction of the bottom wall 31. The inner surface of the inner pot 30 is provided with an array of hydrophilic patterns, each including independent rice slurry grooves. The bottom wall 31 is provided with a first hydrophilic pattern, and the side wall 32 is provided with a second hydrophilic pattern, the second hydrophilic pattern having a lower hydrophilic ability than the first hydrophilic pattern. The main function of the hydrophilic patterns in this application is to enhance the hydrophilicity of the metal inner layer surface. The specific embodiment is merely an example. Those skilled in the art will recognize that the provision of patterns to enhance the hydrophilicity of the stainless steel inner surface and achieve non-stick properties are both within the scope of the hydrophilic patterns of the present invention.

[0030] During cooking, the heating device 105 heats at least the bottom of the inner pot. In some specific embodiments, the heating device 105 also heats a portion of the side wall of the inner pot. The inner surface of the inner pot is arranged with hydrophilic patterns, with a first hydrophilic pattern on the bottom wall 31 and a second hydrophilic pattern on the side wall, each with its own independent rice slurry groove. This allows the inner wall of the zero-coating inner pot to collect some of the rice slurry between the rice and the inner wall after cooking is complete, increasing its hydrophilicity. The first hydrophilic pattern located on the bottom wall mainly serves to maintain the water film on the heat-receiving part of the inner pot, preventing it from quickly disappearing, thereby maintaining non-stickiness during long-term keeping. Because the hydrophilic ability of the second hydrophilic pattern is weaker than that of the first hydrophilic pattern, the water film retention ability of the side wall is weaker than that of the bottom wall, preventing the rice on the side wall from becoming over-moistened and becoming viscous and prone to remaining.

[0031] Specifically, in order to make the hydrophilic ability of the second hydrophilic pattern smaller than that of the first hydrophilic pattern, the second hydrophilic pattern is provided as follows. The first hydrophilic pattern has a first rice slurry groove 302, and the second hydrophilic pattern has a second rice slurry groove 303, and the shape of the first rice slurry groove 302 is obtained by arranging and transforming on the side wall 32 to obtain the shape of the second rice slurry groove 303; The second rice slurry groove 303 includes at least a vertical dimension obtained by conversion along the depth direction of the side wall, and the vertical dimension is larger than the original vertical dimension of the first rice slurry groove 302 before conversion.

[0032] The second rice slurry groove 303 has a dual function, being able to retain some of the rice slurry in the side wall portion and also able to transport some of the rice slurry to the bottom wall. Specifically, on the one hand, the second rice slurry groove 303 can supply some of the rice slurry to the first rice slurry groove 302, preventing the side wall from having too much rice slurry, and at the same time supplying water to the bottom wall. On the other hand, the second rice slurry groove 303 has the ability to retain some of the rice slurry, thereby maintaining a water film on the rice in the side wall portion. In order to balance the rice slurry transporting ability and rice slurry holding ability of the second rice slurry groove 303, the rice slurry grooves on the side walls are arranged differently.

[0033] Specifically, the following applies: First, the hydrophilic pattern has independent rice slurry grooves, which means that the rice slurry grooves on the side walls and bottom are each independently installed and each has a certain ability to retain rice slurry. Secondly, the shape of the first rice slurry groove 302 is obtained by arranging and transforming it in the side wall 32 to form the shape of the second rice slurry groove 303, which means that the rice slurry grooves in the side wall and the rice slurry grooves in the bottom wall have similar shapes and structures and can be arranged together, making it easier to transport rice slurry between the side wall and the bottom wall. The rice slurry grooves have a basic shape, such as a circle, hexagon, square, rectangle, etc., and the arrangement of the rice slurry grooves in the inner pot has a basic arrangement pattern, such as a rectangular arrangement, an annular arrangement, etc., and the rice slurry grooves on the side walls and bottom walls can be arranged in a similar arrangement pattern. The transformation includes rotation, elongation, etc., and due to the existence of the transformation, the shape of the second rice slurry groove 303 will be different from that of the first rice slurry groove 303. In addition, the depth direction of the side walls is not necessarily the same as the arrangement direction, and there may be an included angle with the arrangement direction. Third, the longitudinal dimension of the first rice slurry groove 302 is larger than the original longitudinal dimension before conversion, which means that the second rice slurry groove 303 has the ability to transport excess rice slurry to the bottom wall along the depth direction of the side wall. The rice slurry on the side wall is mainly subjected to the interaction of vertical gravity, the resistance of the rice, and the adhesive force of the second rice slurry groove 303. Because the rice is more compact relative to other ingredients, the resistance to the flow of rice slurry is large. The installed second rice slurry groove 303 changes the contact form between the rice and the side wall of the inner pot, and improves the convection. The vertical dimension is the depth dimension of the side wall of the second rice slurry groove, and the depth dimension is larger than the original vertical dimension of the first rice slurry groove 302 before conversion. This improves the rice slurry on the side wall's ability to flow depthwise along the side wall using gravity. When the rice produces excess rice slurry, part of the rice slurry is stored in the independent second rice slurry groove 303, and the excess is transported depthwise to the bottom wall, thereby preventing the side wall from becoming over-wet and the bottom wall from becoming over-dry.

[0034] Let me explain with an example. Example 1: As shown in the specific embodiment of FIGS. 4-1 and 4-2, the rice slurry grooves are circular in shape and arranged in an annular manner, with each rice slurry groove arranged in both the radial and annular directions. As shown in Figure 4-1, this is a locally enlarged schematic diagram [S1-bottom] of the first rice slurry groove 302 in the bottom wall, and its shape is a circle with a diameter of D1. Referring to the locally enlarged schematic diagram [S1-side] of the second rice slurry groove 303 in the side wall shown in Figure 4-2, the Z direction along the illustrated coordinate axis is the depth direction of the side wall. In this case, the second rice slurry groove 303 has a vertical dimension along the depth direction of L1 and a horizontal dimension along the circumferential direction of W1.

[0035] The first slurry groove 302 is circular, and no matter how it is arranged and transformed, the shape of the second slurry groove 303 is always an ellipse. In this case, L1 is the major axis of the ellipse, and W1 is the minor axis of the ellipse. In this case, both the major and minor axes of the ellipse pass through the center of the ellipse and connect the rounded edges on both sides. Therefore, if the vertical dimension of the second slurry groove 303 in the depth direction is the major axis of the ellipse, the original vertical dimension of the first slurry groove 302 before transformation is the diameter of the circle. If the horizontal dimension of the second slurry groove 303 in the circumferential direction is the minor axis of the ellipse, the original horizontal dimension of the first slurry groove 302 before transformation is also the diameter of the circle. In this embodiment, the two have a dimensional relationship in which L1 is greater than D1 and W1 is smaller than D1.

[0036] Example 2: As shown in the specific embodiment of Figures 5-1, 5-2 and 5-3, the shape of the rice slurry groove is hexagonal, the arrangement is circular, and each rice slurry groove is arranged in the radial and circular directions. As shown in FIG. 5-1, the first rice slurry groove 302 in the bottom wall is a local schematic diagram [S2-bottom], and its shape is a hexagon with a side pitch of L2 and a diagonal pitch of W2.

[0037] The first slurry groove 302 is hexagonal, and after being arranged and transformed, the shape of the second slurry groove 303 on the side wall is a similar hexagon. Since the basic shape is a hexagon, depending on the transformation method, the geometric features in the depth direction may become the opposite sides, opposite corners, or other shapes of the hexagon, and therefore the vertical dimension may be multiple. Referring to the local schematic diagram [S2-side-1] of the second rice slurry groove 303 of the side wall shown in Figure 5-2, [S2-side-1] is a situation where both opposite sides are exactly in the depth direction. In this case, the dimension L3 along the depth direction of the second rice slurry groove 303 is the opposite side pitch of the hexagon, and accordingly, the dimension W3 along the circumferential direction of the side wall is the diagonal pitch of the hexagon. In this case, the depth direction is the opposite side pitch of the hexagon, and the circumferential direction is the diagonal pitch of the hexagon. Therefore, when the vertical dimension in the depth direction of the second rice slurry groove 303 is the opposite side dimension L3 of the hexagon, the original vertical dimension of the first rice slurry groove 302 before conversion is the opposite side pitch L2 of the hexagon, and when the horizontal dimension in the circumferential direction of the second rice slurry groove 303 is the diagonal dimension W3 of the hexagon, the original horizontal dimension of the first rice slurry groove 302 before conversion is the diagonal pitch W2 of the hexagon. In this embodiment, the two have a dimensional relationship in which L3 is larger than L2 and W3 is smaller than W2.

[0038] Referring to the local schematic diagram [S2-side-2] of the second rice slurry groove 303 of the side wall shown in Figure 5-3, in [S2-side-2], the opposite sides and diagonal angles are not exactly in the depth direction, but the directions of the opposite sides and diagonal angles both form a certain angle with the depth direction. In this case, to conveniently characterize the dimension in the depth direction, the maximum pitch L4 in the depth direction of the upper and lower endpoints of the hexagon can be used as the vertical dimension. Correspondingly, to conveniently characterize the dimension in the circumferential direction, the maximum pitch L4 in the circumferential direction of the left and right endpoints of the hexagon can be used as the vertical dimension. The pitch W4 can be used as the horizontal dimension. In this case, the upper and lower end points and the left and right end points are diagonal corners of a hexagon. Therefore, if the vertical dimension in the depth direction of the second slurry groove 303 is the maximum pitch L4 between the upper and lower end points of the hexagon, the original vertical dimension of the first slurry groove 302 before conversion is the diagonal pitch W2 of the hexagon. If the horizontal dimension in the circumferential direction of the second slurry groove 303 is the maximum pitch W4 between the left and right end points of the hexagon, the original horizontal dimension of the first slurry groove 302 before conversion is the diagonal pitch W2 of the hexagon. In this embodiment, the two dimensions have a dimensional relationship in which L4 is greater than W2 and W4 is smaller than W2.

[0039] Example 3: As shown in the specific embodiment in Figures 6-1, 6-2 and 6-3, the rice slurry grooves are rectangular in shape and arranged in a rectangular manner, with the radial and lateral directions of each rice slurry groove. As shown in Figure 6-1, this is a local schematic diagram [S3-bottom] of the first rice slurry groove 302 on the bottom wall, and its shape is a square with a side length of W5 = L5 and a diagonal pitch of D5 = D6. In some modified embodiments of this embodiment, it may also be a rectangle with W5 ≠ L5.

[0040] The first slurry groove 302 is rectangular, and after being arranged and transformed, the shape of the second slurry groove 303 on the side wall is rectangular, rhombus or parallelogram. No matter how it is transformed, the basic shape of the second slurry groove always has four sides and four corners. Therefore, depending on the transformation method, the geometric features in the depth direction may become both opposite sides, both diagonals or other shapes of a rectangle, and therefore the vertical dimension may be multiple. Regarding the possible existence of the second slurry groove 303, refer to the local schematic diagram [S3-side-1] of the second slurry groove 303 of the side wall shown in FIG. 6-2. [S3-side-1] is a situation where both opposite sides are exactly in the depth direction. In this case, the dimension L6 along the depth direction of the second slurry groove 303 is the pitch of one pair of opposite sides of the rectangle. Accordingly, the dimension W6 along the circumferential direction of the side wall is the pitch of the other pair of opposite sides of the rectangle. In this case, Since the vertical dimension in the depth direction of second slurry groove 303 is the opposite side dimension L6 of the rectangle, the original vertical dimension of first slurry groove 302 before conversion is the opposite side pitch L5 of one pair of the rectangle, and when the horizontal dimension in the circumferential direction of second slurry groove 303 is the opposite side dimension W6 of the other pair of the rectangle, the original horizontal dimension of first slurry groove 302 before conversion is the opposite side pitch W5 of the other pair of the rectangle. In this example, since the shape is square, W5 = L5, and the two have a dimensional relationship in which L6 is greater than L5 or W5 and W6 is smaller than W5 or L5.

[0041] Regarding another possible existence of the second slurry groove 303, refer to the local schematic diagram [S3-side-2] of the second slurry groove 303 of the side wall shown in FIG. 6-3. [S3-side-2] is a situation in which the diagonals are just in the depth direction. In this case, in the depth direction, the pitch L7 of one pair of diagonals is the vertical dimension, and accordingly, in the circumferential direction, the pitch W7 of the other pair of diagonals is the horizontal dimension. In this case, the depth direction and the circumferential direction are respectively two pairs of diagonals of a rectangle. Therefore, when the vertical dimension in the depth direction of the second slurry groove 303 is the diagonal pitch L7 of one set of rectangles, the original vertical dimension of the first slurry groove 302 before conversion is the diagonal pitch D5 or D6 of one set of rectangles, and when the circumferential dimension of the second slurry groove 303 is the diagonal pitch W7 of the other set of rectangles, the original horizontal dimension of the first slurry groove 302 before conversion is the diagonal pitch D6 or D5 of the other set of rectangles. In this embodiment, since the shape is square, D5 = D6, and the two have a dimensional relationship in which L7 is greater than D5 or D6 and W7 is smaller than D6 or D5.

[0042] As described above, those skilled in the art can provide a dimensional association logic between the converted second slurry groove 303 and the unconverted first slurry groove 302. That is, since the second slurry groove 303 is obtained by arranging and converting the shape of the first slurry groove 302, the shape features in the depth direction of the second slurry groove 303 will inevitably correspond to the shape features associated with the basic shape of the first slurry groove 302. In this way, when faced with different basic shapes, if the basic shape is a circle, the original vertical dimension can directly be the diameter; if it is an N-gon (N>2), according to the shape features in the depth direction (opposite sides, diagonals, or upper and lower endpoints), the dimension where the corresponding feature (corresponding opposite sides, corresponding diagonals, or corresponding endpoints) associated with the basic shape is located can be found as the original vertical dimension. For the same reason, the original horizontal dimension can also be associated with the horizontal dimension according to the association logic.

[0043] As will be understood by those skilled in the art, the basic shape of the rice slurry groove may be other shapes, and the arrangement manner may be other ways, and different shapes and arrangement manners may be freely combined, for example, a circular rice slurry groove may be arranged in a rectangular arrangement manner, and transformations may include rotation, pulling, etc., thereby obtaining a second rice slurry groove 303 different from the basic shape.

[0044] According to the description of some of the above embodiments, the second rice slurry groove 303 includes at least a lateral dimension obtained by transformation along the circumferential direction of the side wall, and the lateral dimension is smaller than the original lateral dimension of the first rice slurry groove 302 before transformation.

[0045] After the arrangement transformation, the circumferential dimensions are reduced compared to the previous basic shape. When viewed from the side walls of the second rice slurry groove 303, for example, in the case of a circle, the side walls located in the circumferential direction change from their previous rounded edges to arc-shaped sides with a large curvature; in the case of a hexagon, for example, the side walls located in the circumferential direction change from their previous adjacent sides with an included angle of 60 degrees to their adjacent sides with an included angle greater than 60 degrees; and in the case of a square, for example, the side walls located in the circumferential direction change from their previous adjacent sides with an included angle of 90 degrees to their adjacent sides with an included angle greater than 90 degrees. This reduces the flow resistance of the rice slurry in the rice slurry groove in both circumferential directions, thereby improving the fluidity of the excess rice slurry.

[0046] According to the description of some embodiments above, the vertical dimension in the depth direction of the second rice slurry groove 303 is greater than the horizontal dimension in the circumferential direction. For example, when the basic shape is a circle or a square, an elliptical second rice slurry groove 303 is obtained. Therefore, simply comparing the vertical dimension and the horizontal dimension of the second rice slurry groove 303, the vertical dimension may be greater than the horizontal dimension. For some basic shapes, the vertical dimension may be equal to or less than the horizontal dimension. In this case, when the vertical dimension is greater than the horizontal dimension, it is preferable to ensure that the second rice slurry groove 303 necessarily has the ability to convey rice slurry in the depth direction. In this case, the larger depth dimension means that the sidewall length along the depth direction of the second rice slurry groove 303 is longer. In this case, the longer sidewall can have a stronger rice slurry guiding ability, thereby strengthening the overflow ability in the depth direction of the second rice slurry groove 303 and weakening its ability to convey rice slurry in the circumferential direction. This avoids the transport of rice slurry in the circumferential direction, thereby preventing the rice on the side walls from becoming too moist and sticky, and reducing residue.

[0047] As shown in FIG. 7, the second hydrophilic pattern is arranged on the side wall in a first arrangement structure, and the first arrangement structure has an arcuate arrangement line 33, which includes at least an arrangement segment extending toward the bottom wall, and the arcuate arrangement line has second rice slurry grooves arranged in an arrangement.

[0048] Due to the existence of transformation, in this case, the depth direction does not necessarily coincide with the arrangement direction, and it may or may not coincide. The present application can determine the angle between the depth direction and the arrangement direction according to the proportion of the conveying capacity and water retention capacity of the second rice slurry groove 303 to each other. When the depth direction and the arrangement direction are in a straight line, the conveying capacity of the second rice slurry groove 303 is improved and the water retention capacity is reduced. When the depth direction and the arrangement direction form an angle, the conveying capacity of the second rice slurry groove 303 is reduced and the water retention capacity is improved.

[0049] Due to the arrangement segments of the arc-shaped arrangement line 33 extending toward the bottom wall, there is a certain angle between the arrangement direction and the depth direction of the second rice slurry groove 303, which allows the balance between its conveying capacity and moisture retention capacity to be achieved.

[0050] In some embodiments of the present application, the arc-shaped arrangement line 33 is a parabola that is convex downward toward the bottom wall, which allows rice slurry at a high place to be conveyed downward over multiple layers of rice slurry, better overcomes the resistance of compact rice, and prevents the rice slurry on the upper side wall of the inner pot from becoming over-wet.

[0051] The arrangement density of the rice slurry grooves on the inner surface of the inner pot is 8 to 2500 per square centimeter. This density can prevent the rice slurry grooves from being too large, resulting in too much rice slurry being accumulated in the rice slurry grooves, and also prevent the rice slurry grooves from being too small, resulting in a more suitable rice cooking device, less rice remaining after use, and easier cleaning. In this way, the area occupied by a single array unit is between 12.5 and 0.04 square millimeters, and the center pitch between adjacent array units is between 0.2 and 3.5 mm. Generally, the width of a rice grain is about 2 mm, and the water absorption expansion rate is about 1.5 to 2 times. Therefore, the dimensional width of the rice grain after water absorption is about 3 mm or more. Therefore, it is possible to ensure that there is at least one rice slurry groove per rice grain, and even if the array units are too densely packed, For example, if the number of grooves exceeds 2500 per square centimeter, on the one hand, the rice slurry grooves will make processing and molding difficult, and on the other hand, the rice slurry grooves will be too close to each other to retain the rice slurry, and the water film will easily disappear. In some modified embodiments of the present application, a number of 100 to 200 grooves per square centimeter is more preferred, specifically about 120 grooves, or other data such as 30, 50, 60, 80, 90, 150, 200, 400, 500, 1000, 2000, etc. The above-mentioned arrangement unit includes the dimensions of the partition structure other than the rice slurry grooves. Specifically, the rice slurry groove width is preferably 0.6 mm, and the partition structure is preferably 0.3 mm, so the center pitch is 0.6 + 0.3 = 0.9 mm.

[0052] In some embodiments of the present application, for example, as shown in Figure 8, adjacent rice slurry grooves are provided with partition structures 304 between them so that each of the rice slurry grooves is independently installed. Since the rice slurry grooves are installed in an array, there are partition structures 304 between the independent rice slurry grooves, thereby ensuring the moisture retention capacity of the rice slurry grooves.

[0053] In some embodiments of the present application, in the group of arranged units consisting of the rice slurry grooves and the partition structures 304, the area occupied by the rice slurry grooves is larger than the area occupied by the partition structures 304. This prevents the partition structures 304 from being too large and causing excessive contact of the rice with the partition structures 304. As a result, the rice slurry is stored more in the rice slurry grooves rather than in the partition structures 304, thereby enabling the rice slurry transport and moisture retention functions of the rice slurry grooves to function within the arranged units. As shown in Figure 8, four square rice slurry grooves and the surrounding partition structures (shaded areas) constitute one arranged unit, and the area of ​​the shaded areas is smaller than the area of ​​the non-shaded areas. The partition structure of the present application may be as follows: 1. After forming rice slurry grooves in the stainless steel inner layer, the surface of the stainless steel inner layer where adjacent rice slurry grooves are connected is the partition structure of the present application; 2. The connecting parts between adjacent rice slurry grooves are processed into a fine grain to form the partition structure of the present application; 3. The connecting parts between adjacent rice slurry grooves are processed to be lower or higher than the original inner surface of the stainless steel to form the partition structure of the present application.

[0054] The range of the ratio b / a of the vertical dimension to the original vertical dimension is 1

[0055] ​The ratio d / c between the lateral dimension and the original lateral dimension is in the range of 0.3≦d / c<1. If the ratio is too large, the circumferential dimension of the side wall becomes large, which is unfavorable for conveying the rice slurry, while if the ratio is too small, it is unfavorable for retaining the rice slurry. In this way, within the above range, a good rice cooking effect can be ensured. For example, if the lateral dimension is 0.4 mm, the original lateral dimension may be between 0.4 and 1.3 mm. In some modified embodiments, the ratio may be 0.8, 0.5, 0.9, 0.6, 0.75, etc.

[0056] Portions not described in this application can be realized by adopting or referring to existing technologies.

[0057] Each embodiment in this specification will be described in a progressive manner, and reference will be made to similar or similar parts between the embodiments, with each embodiment mainly describing the differences from other embodiments.

[0058] The above description is merely an example of the present application and is not intended to limit the present application. Those skilled in the art will appreciate that the present application may undergo various modifications and variations. Any amendments, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included within the scope of the claims of the present application. [Explanation of symbols]

[0059] 10. Pot body 105...Heating device 20 Lid 30 Inner pot 31 Bottom wall 32...side wall 33 Arc-shaped array line 301...Cooking room 302 No. 1 Slurry Ditch 303 Second slurry trench 304 ···Partition structure.

Claims

1. A rice cooking utensil comprising a pot body, a lid body, and an inner pot, the inner pot being detachably attached to the pot body, the inside of the inner pot being in contact with rice via a metal layer, the inner pot including a bottom wall and a side wall, The inner surface of the inner pot is provided with an array of hydrophilic patterns, each of which includes an independent rice slurry groove, the bottom wall of the inner pot is provided with a first hydrophilic pattern, and the side wall of the inner pot is provided with a second hydrophilic pattern; The first hydrophilic pattern includes a first rice slurry groove, and the second hydrophilic pattern includes a second rice slurry groove, and the shape of the first rice slurry groove is obtained by arranging and transforming it on the side wall to obtain the shape of the second rice slurry groove, and the second rice slurry groove has at least a vertical dimension obtained by transformation along the depth direction of the side wall, and the vertical dimension is larger than the original vertical dimension of the first rice slurry groove before transformation. A rice cooking utensil characterized by:

2. The second rice slurry groove includes at least a lateral dimension obtained by transformation along a circumferential direction of a side wall, and the lateral dimension is smaller than an original lateral dimension of the first rice slurry groove before transformation. The rice cooking utensil according to claim 1 .

3. The longitudinal dimension is greater than the lateral dimension; The rice cooking utensil according to claim 2 .

4. The second hydrophilic pattern is arranged on the side wall in a first arrangement structure, the first arrangement structure having arcuate arrangement lines, and the arcuate arrangement lines at least include arrangement segments extending toward the bottom wall. The rice cooking utensil according to claim 1 .

5. The arrangement density of the rice slurry grooves on the inner surface of the inner pot is 8 to 2500 grooves per square centimeter. The rice cooking utensil according to claim 1 .

6. A partition structure is provided between adjacent rice slurry grooves so that each of the rice slurry grooves is installed independently. The rice cooking utensil according to claim 1 .

7. In the group of arrangement units each including the rice slurry groove and the partition structure, the area occupied by the rice slurry groove is larger than the area occupied by the partition structure. The rice cooking utensil according to claim 6.

8. The ratio b / a of the vertical dimension to the original vertical dimension is in the range of 1<b / a≦1.

6. The rice cooking utensil according to claim 1 .

9. The range of the ratio d / c of ​​the horizontal dimension to the original horizontal dimension is 0.3≦d / c<1. The rice cooking utensil according to claim 2 .

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