Electric cooker inner container and electric cooker

Abstract

The utility model discloses an electric cooker inner container and an electric cooker, and relates to the technical field of household appliances. The utility model comprises an arc-shaped side part and a bottom part connected with the arc-shaped side part, the height from the end part, far away from the bottom part, of the arc-shaped side part to an arc return point on the arc-shaped side part is a first height, and the height from the bottom part to the arc return point of the arc-shaped side part is a second height, the arc return point refers to a point with the farthest horizontal distance between the arc-shaped side part and the central axis of the inner container of the electric cooker, and the ratio of the first height to the second height is 0.5-2. Therefore, the radian of the side wall of the inner container can be guaranteed by limiting the ratio, heat flow can flow along the side wall, water absorption of upper-layer food materials is accelerated, and the risk that upper-layer rice is half-cooked can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to an inner pot of an electric rice cooker and an electric rice cooker. Background Art

[0002] As a component in direct contact with food materials, the inner pot of an electric rice cooker is used to hold food materials and transfer the heat of a heat source (heating plate) to the food materials inside the pot. The shape of the inner pot directly affects the temperature distribution of the pot body when transferring heat, thereby affecting the temperature field and flow field inside the pot. The temperature field and flow field inside the pot determine the quality of the rice.

[0003] Currently, the inner pot of an electric rice cooker generally adopts a cylindrical inner pot. During the cooking process, the heat at the bottom of the pot is severely concentrated, and the temperature of the upper layer is insufficient, resulting in undercooked rice in the upper layer after cooking. Summary of the Utility Model

[0004] In view of the problem that the inner pot of the current electric rice cooker is prone to undercooked rice, the present utility model is proposed to provide an inner pot of an electric rice cooker and an electric rice cooker that can overcome or at least partially solve the above problems.

[0005] Based on the first aspect of the present utility model, there is provided an inner pot of an electric rice cooker. The inner pot of the electric rice cooker includes an arc-shaped side portion and a bottom connected to the arc-shaped side portion. The height between the end of the arc-shaped side portion far from the bottom and the return arc point is a first height, and the height between the bottom and the return arc point of the arc-shaped side portion is a second height. Herein, the return arc point refers to the point where the horizontal distance from the arc-shaped side portion to the central axis of the inner pot of the electric rice cooker is the farthest. Moreover, the ratio of the first height to the second height is between 0.5 and 2.

[0006] An optional content of the utility model is that the horizontal distance between the connection of the arc-shaped side portion and the bottom and the return arc point is a first width, and the horizontal distance between the end face of the arc-shaped side portion far from the bottom and the return arc point is a second width. Herein, the ratio of the first width to the second width is between 1 and 3.

[0007] An optional content of the utility model is that the horizontal distance from the return arc point to the central axis of the inner pot of the electric rice cooker is a third width, the height of the arc-shaped side portion is a third height, and the ratio between the third width and the third height is between 1 and 1.5.

[0008] An optional content of the utility model is that the horizontal distance between the center of the bottom and the connection of the bottom and the arc-shaped side portion is a fourth width, and the ratio between the third width and the fourth width is between 4 / 3 and 4.

[0009] An alternative utility model content, wherein the arc-shaped side portion includes a first arc portion, the first arc portion is smoothly connected to the bottom portion, and the return arc point is located on the first arc portion.

[0010] An alternative utility model content, wherein the arc-shaped side portion includes a first arc portion and a second arc portion that is smoothly connected to the first arc portion, and wherein the second arc portion is smoothly connected to the bottom portion.

[0011] An alternative utility model content, wherein the arc-shaped side portion includes a first arc portion, a second arc portion, and a third arc portion, wherein the first arc portion is smoothly connected to the second arc portion, the second arc portion is smoothly connected to the third arc portion, and the third arc portion is smoothly connected to the bottom portion.

[0012] An alternative utility model content, wherein the arc-shaped side portion includes at least four arc portions, adjacent two arc portions are smoothly connected, and the arc portion close to the bottom portion is smoothly connected to the bottom portion.

[0013] An alternative utility model content, wherein the bottom portion and the arc-shaped side portion are respectively composed of a metal layer or a composite metal layer.

[0014] An alternative utility model content, wherein the thickness of the bottom portion is between 1.5 mm and 3.5 mm.

[0015] An alternative utility model content, wherein the thickness of the arc-shaped side portion is between 1.5 mm and 3.5 mm.

[0016] An alternative utility model content, wherein the difference in thickness between the bottom portion and the arc-shaped side portion is less than or equal to 2 mm.

[0017] Based on the second aspect of the present utility model, there is also provided a rice cooker, which includes the inner pot of the rice cooker as described in any one of the above utility model contents.

[0018] Compared with the prior art, the present utility model includes an arc-shaped side portion and a bottom portion connected to the arc-shaped side portion. The height between the end of the arc-shaped side portion far from the bottom portion and the return arc point is the first height, and the height between the bottom portion and the return arc point of the arc-shaped side portion is the second height. Among them, the return arc point refers to the point on the arc-shaped side portion with the farthest horizontal distance from the central axis of the inner pot of the rice cooker. Moreover, the ratio of the first height to the second height is between 0.5 and 2. Thus, the sidewall radian of the inner pot can be ensured through the above ratio limitation, which is beneficial to the flow of heat along the sidewall, accelerating the water absorption of the upper-layer ingredients, and thereby reducing the risk of the upper-layer rice being undercooked during cooking.

[0019] The above description is only an overview of the technical solution of the present utility model. In order to be able to more clearly understand the technical means of the present utility model, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following specifically illustrates the specific embodiments of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not to be considered as limiting the present utility model. And throughout the drawings, the same reference numerals are used to represent the same components.

[0021] In the drawings:

[0022] Figure 1 is a schematic cross-sectional structure diagram of an electric rice cooker provided by an embodiment of the present utility model;

[0023] Figure 2 is a schematic cross-sectional structure diagram of another electric rice cooker provided by an embodiment of the present utility model;

[0024] Reference numerals: 1, bottom; 2, arc-shaped side; 21, first arc-shaped part; 22, second arc-shaped part; 3, return arc point; 4, hem. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The exemplary embodiments of the present utility model will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present utility model can be more thoroughly understood and the scope of the present utility model can be fully conveyed to those skilled in the art.

[0026] As a component in direct contact with food ingredients, the inner pot of the electric rice cooker is used to hold the food ingredients and transfer the heat of the heat source (heating plate) to the food ingredients in the pot. The shape of the inner pot directly affects the temperature distribution of the pot body when transferring heat, thereby affecting the temperature field and flow field in the pot. The temperature field and flow field in the pot determine the quality of the rice.

[0027] Currently, the inner pots of electric rice cookers generally use cylindrical inner pots. During the cooking process, the heat at the bottom of the pot is severely concentrated, and the temperature of the upper layer is insufficient, resulting in situations such as undercooked rice in the upper layer after cooking.

[0028] Based on the above technical problems, the embodiments of the present utility model are proposed. The embodiments of the present utility model may include an arc-shaped side portion 2 and a bottom portion 1 connected to the arc-shaped side portion 2. The height between the end of the arc-shaped side portion 2 away from the bottom portion 1 and the arc return point 3 is the first height, and the height between the bottom portion 1 and the arc return point 3 of the arc-shaped side portion 2 is the second height. Wherein, the arc return point 3 refers to the point with the farthest horizontal distance from the central axis of the rice cooker inner pot of the arc-shaped side portion. And the ratio of the first height to the second height is between 0.5 and 2. Thus, the side wall radian of the inner pot can be ensured by the above ratio limitation, which is beneficial to the flow of heat flow along the side wall, accelerating the water absorption of the upper-layer ingredients, and thus reducing the risk of the upper-layer rice being undercooked during cooking.

[0029] Referring to Figure 1 and Figure 2 As shown, the embodiments of the present utility model provide a rice cooker inner pot, which may include an arc-shaped side portion 2 and a bottom portion 1 connected to the arc-shaped side portion 2. The height between the end of the arc-shaped side portion 2 away from the bottom portion 1 and the arc return point 3 is the first height, and the height between the bottom portion 1 and the arc return point 3 of the arc-shaped side portion 2 is the second height. Wherein, the arc return point 3 refers to the point with the farthest horizontal distance from the central axis of the rice cooker inner pot of the arc-shaped side portion. And the ratio of the first height to the second height is between 0.5 and 2.

[0030] In the embodiments of the present utility model, the rice cooker inner pot may include an arc-shaped side portion 2 and a bottom portion 1 connected to the arc-shaped side portion 2. Among them, as a preferred implementation manner, the arc-shaped side portion 2 and the bottom portion 1 may be an integral structure. The arc-shaped side portion 2 may be the side wall of the rice cooker inner pot, protruding outward from the outside of the rice cooker inner pot. It may be formed by connecting at least one arc portion. Wherein, the arc return point 3 refers to the point with the farthest horizontal distance from the central axis of the rice cooker inner pot of the arc-shaped side portion. In other words, the arc return point 3 can also be understood as the position where the radius of the cross-section corresponding to the arc-shaped side portion 2 in the horizontal direction is the largest.

[0031] Thus, the height between the end of the arc-shaped side portion 2 away from the bottom portion 1 and the arc return point 3 is the first height. For example, the first height is denoted as H1, and the height between the bottom portion 1 and the arc return point 3 of the arc-shaped side portion 2 is the second height, where the second height is denoted as H2. Thus, the ratio (H1 / H2) of the first height to the second height is limited between 0.5 and 2, which can ensure the water flow efficiency of the rice cooker inner pot on the basis of considering the cooking water amount added by the user.

[0032] For example, when the ratio of the first height to the ratio of the second height is less than 0.5, the height of the corresponding arc return point 3 is too high, which is higher than the maximum water volume of the rice, greatly reducing the water flow efficiency of the inner pot. For another example, when the ratio of the first height to the ratio of the second height is greater than 2, it is determined that the height of the arc return point 3 from the bottom 1 is too low, and at the same time, the water flow efficiency of the inner pot of the rice cooker cannot be improved.

[0033] Therefore, the ratio (H1 / H2) of the first height to the second height is limited between 0.5 and 2, which can ensure that the arc return point 3 is between the bottom 1 and the maximum water volume height, and close to the maximum water volume height. Thus, during the process of cooking rice, the central temperature of the inner pot of the rice cooker is lower than the temperature on the arc-shaped side 2, so that the heated water vapor can rise along the arc-shaped side 2. Since the central temperature of the inner pot of the rice cooker is lower, the corresponding water descends from the center of the inner pot of the rice cooker to the bottom 1. A heat convection is formed. This enables the moisture of the rice to fully circulate to the rice located in the upper layer, and can accelerate the water absorption of the upper-layer ingredients, thereby reducing the risk of undercooked rice in the upper layer during cooking.

[0034] In some embodiments, the ratio of the first height to the second height can be 0.5; in other embodiments, the ratio of the first height to the second height can be 2; in still other embodiments, the ratio of the first height to the second height can be values such as 1, 1.5, and 1.8. Those skilled in the art can select a suitable ratio within the above ratio range according to actual design requirements, and no further limitation is made here.

[0035] In summary, the embodiment of the present invention may include an arc-shaped side 2 and a bottom 1 connected to the arc-shaped side 2. The height between the end of the arc-shaped side 2 away from the bottom 1 and the arc return point 3 is the first height, and the height between the bottom 1 and the arc return point 3 of the arc-shaped side 2 is the second height. Among them, the arc return point 3 refers to the point with the farthest horizontal distance from the central axis of the inner pot of the rice cooker on the arc-shaped side, and the ratio of the first height to the second height is between 0.5 and 2. Thus, the sidewall radian of the inner pot can be ensured by the above ratio limitation, which is beneficial to the flow of heat along the sidewall, accelerates the water absorption of the upper-layer ingredients, and thereby can reduce the risk of undercooked rice in the upper layer during cooking.

[0036] An optional embodiment of the utility model, the inner pot of the rice cooker may include an arc-shaped side portion 2 and a bottom portion 1 connected to the arc-shaped side portion 2. The height between the end of the arc-shaped side portion 2 away from the bottom portion 1 and the return arc point 3 is the first height, and the height between the bottom portion 1 and the return arc point 3 of the arc-shaped side portion 2 is the second height. Wherein, the return arc point 3 refers to the point where the horizontal distance of the arc-shaped side portion from the central axis of the inner pot of the rice cooker is the farthest. And the ratio of the first height to the second height is between 0.5 and 2. The horizontal distance between the connection of the arc-shaped side portion 2 and the bottom portion 1 and the return arc point 3 is the first width, and the horizontal distance between the end face of the arc-shaped side portion 2 away from the bottom portion 1 and the return arc point 3 is the second width. Wherein, the ratio of the first width to the second width is between 1 and 3.

[0037] In the embodiment of the present utility model, the inner pot of the rice cooker may include an arc-shaped side portion 2 and a bottom portion 1 connected to the arc-shaped side portion 2. Among them, as a preferred implementation manner, the arc-shaped side portion 2 and the bottom portion 1 may be an integral structure. The arc-shaped side portion 2 may be the side wall of the inner pot of the rice cooker, protruding outward from the outside of the inner pot of the rice cooker. It may be obtained by connecting at least one arc portion. Wherein, the return arc point 3 refers to the point where the horizontal distance of the arc-shaped side portion from the central axis of the inner pot of the rice cooker is the farthest. In other words, the return arc point 3 can also be understood as the position where the radius corresponding to the cross-section of the arc-shaped side portion 2 in the horizontal direction is the largest.

[0038] Thus, the height between the end of the arc-shaped side portion 2 away from the bottom portion 1 and the return arc point 3 is the first height. For example, the first height is denoted as H1, and the height between the bottom portion 1 and the return arc point 3 of the arc-shaped side portion 2 is the second height, where the second height is denoted as H2. Thus, the ratio of the first height to the second height (H1 / H2) is limited between 0.5 and 2, which can ensure the water flow efficiency of the inner pot of the rice cooker on the basis of considering the maximum cooking water volume added by the user.

[0039] For example, when the ratio of the first height and the ratio of the second height are less than 0.5, the height of the corresponding return arc point 3 is too high, which is higher than the maximum water volume of the rice, greatly reducing the water flow efficiency of the inner pot. For another example, when the ratio of the first height and the ratio of the second height are greater than 2, it is determined that the height of the return arc point 3 from the bottom portion 1 is too low, and at the same time, the water flow efficiency of the inner pot of the rice cooker cannot be improved.

[0040] Thus, the ratio (H1 / H2) of the first height to the second height is limited between 0.5 and 2, which can ensure that the arc return point 3 is between the bottom 1 and the maximum water level height and close to the maximum water level height. During the process of cooking rice, the central temperature of the inner pot of the rice cooker is lower than the temperature on the arc-shaped side 2, so that the heated water vapor can rise along the arc-shaped side 2. Since the central temperature of the inner pot of the rice cooker is relatively low, the corresponding water descends from the center of the inner pot of the rice cooker to the bottom 1, forming sufficient heat convection. This enables the moisture in the rice to fully circulate to the rice on the upper layer and can accelerate the water absorption of the ingredients on the upper layer, thereby reducing the risk of the upper-layer rice being undercooked.

[0041] In some embodiments, the ratio of the first height to the second height can be 0.5; in some other embodiments, the ratio of the first height to the second height can be 2; in still some other embodiments, the ratio of the first height to the second height can be values such as 1, 1.5, and 1.8. Those skilled in the art can select a suitable ratio within the above ratio range according to actual design requirements, and no further limitation is made here.

[0042] Moreover, limiting the ratio (W1 / W2) of the first width to the second width between 1 and 3 can extend the arc return length from the arc return point 3 to the bottom 1 on the basis of ensuring convenient use by the user, and improve the convection efficiency of moisture and heat in the inner pot of the rice cooker.

[0043] For example, when the ratio of the first width to the second width is less than 1, the arc return length from the arc return point 3 to the bottom 1 is insufficient. After the heated water vapor rises along the arc return length, due to the blocking effect from the arc return point 3 to the top of the arc-shaped side 2, the upward convection rate becomes slow, thus slowing down the water absorption rate of the ingredients at the top of the inner pot.

[0044] For another example, when the ratio of the first width to the second width is greater than 3, it will cause the cross-sectional area formed at the top of the arc-shaped side 2 to be too small. That is, it will cause the opening radius (such as the opening radius W5 in Figure 1 ) of the inner pot of the rice cooker to be too small, which is not conducive to pouring out the ingredients in the inner pot and reduces the user experience.

[0045] In some embodiments, the ratio of the first width to the second width can be 1; in some other embodiments, the ratio of the first width to the second width can be 3; in still some other embodiments, the ratio of the first height to the second height can be values such as 1.5, 2, and 2.5. Those skilled in the art can select a suitable ratio within the above ratio range according to actual design requirements, and no further limitation is made here.

[0046] An optional embodiment of the utility model, as shown in reference to Figure 1 and Figure 2 The inner pot of the rice cooker may include an arc-shaped side portion 2 and a bottom portion 1 connected to the arc-shaped side portion 2. The height between the end of the arc-shaped side portion 2 away from the bottom portion 1 and the return arc point 3 is the first height, and the height between the bottom portion 1 and the return arc point 3 of the arc-shaped side portion 2 is the second height. Among them, the return arc point 3 refers to the point with the farthest horizontal distance from the central axis of the inner pot of the rice cooker. And the ratio of the first height to the second height is between 0.5 and 2. The horizontal distance from the return arc point 3 to the central axis of the inner pot of the rice cooker is the third width, and the height of the arc-shaped side portion 2 is the third height. The ratio between the third width and the third height is between 1 and 1.5.

[0047] In the embodiment of the present utility model, the inner pot of the rice cooker may include an arc-shaped side portion 2 and a bottom portion 1 connected to the arc-shaped side portion 2. Among them, as a preferred embodiment, the arc-shaped side portion 2 and the bottom portion 1 may be an integral structure. The arc-shaped side portion 2 may be the side wall of the inner pot of the rice cooker, protruding outward from the outside of the inner pot of the rice cooker. It may be formed by connecting at least one arc-shaped portion. Among them, the return arc point 3 refers to the point with the farthest horizontal distance from the central axis of the inner pot of the rice cooker. In other words, the return arc point 3 can also be understood as the position where the radius corresponding to the cross-section of the arc-shaped side portion 2 in the horizontal direction is the largest.

[0048] Thus, the height between the end of the arc-shaped side portion 2 away from the bottom portion 1 and the return arc point 3 is the first height. For example, the first height is denoted as H1, and the height between the bottom portion 1 and the return arc point 3 of the arc-shaped side portion 2 is the second height, where the second height is denoted as H2. Thus, the ratio of the first height to the second height (H1 / H2) is limited between 0.5 and 2, which can ensure the water flow efficiency of the inner pot of the rice cooker on the basis of considering the cooking water volume added by the user.

[0049] For example, when the ratio of the first height and the ratio of the second height are less than 0.5, the height of the corresponding return arc point 3 is too high, which is higher than the maximum water volume of the rice, greatly reducing the water flow efficiency of the inner pot. For another example, when the ratio of the first height and the ratio of the second height are greater than 2, it is determined that the height of the return arc point 3 from the bottom portion 1 is too low, and at the same time, the water flow efficiency of the inner pot of the rice cooker cannot be improved.

[0050] Thus, the ratio (H1 / H2) of the first height to the second height is limited between 0.5 and 2, which can ensure that the arc return point 3 is between the bottom 1 and the maximum water level height and close to the maximum water level height. Thus, during the process of cooking rice, the central temperature of the inner pot of the rice cooker is lower than the temperature on the arc-shaped side 2, so that the heated water vapor can rise along the arc-shaped side 2. Since the central temperature of the inner pot of the rice cooker is relatively low, the corresponding water descends from the center of the inner pot of the rice cooker to the bottom 1. A heat convection is formed, enabling the moisture of the rice to fully flow to the rice on the upper layer and accelerating the water absorption of the upper-layer ingredients, thereby reducing the risk of the upper-layer rice being undercooked.

[0051] In some embodiments, the ratio of the first height to the second height can be 0.5; in some other embodiments, the ratio of the first height to the second height can be 2; in still some other embodiments, the ratio of the first height to the second height can be values such as 1, 1.5, and 1.8. Those skilled in the art can select a suitable ratio within the above ratio range according to actual design requirements, and no further limitation is made herein.

[0052] The horizontal distance of the arc-shaped side 2 at the arc return point 3 is the third width W3, that is, the cross-sectional radius at the B-B position, and the A-A position is the central axis of the inner pot of the rice cooker. Among them, the third width can also be understood as the maximum horizontal distance corresponding to the inner pot of the rice cooker. The height of the arc-shaped side 2 is the third height H3, and the third height can also be understood as the total height of the food accommodation cavity formed by the inner pot of the rice cooker. The third height is equal to the sum of the first height and the second height, that is, H3 = H1 + H2. Limiting the ratio of the third width to the third height (W3 / H3) between 1 and 1.5 can be understood as limiting the width-to-height ratio of the inner pot of the rice cooker between 1 and 1.5, making the width of the inner pot of the rice cooker greater than or equal to the height of the inner pot of the rice cooker. Thus, the height of the water added during rice cooking can be reduced. As a result, the water can flow to the rice on the upper layer faster, avoiding the problem of the upper-layer rice being undercooked and improving the cooking effect and taste of the rice.

[0053] If the third width and the third height are less than 1, the height of the inner pot of the rice cooker is too high, increasing the difficulty for the heated water vapor to rise along the arc-shaped side 2 and for the upper-layer ingredients to absorb water. If the third width and the third height are greater than 1.5, the width of the inner pot of the rice cooker is too wide, the placement area occupied by the rice cooker is too large, and it is possible that the amount of rice cooked by the user cannot cover the bottom 1 completely, reducing the user experience.

[0054] In some embodiments, the ratio of the third width to the third height can be 1; in some other embodiments, the ratio of the third width to the third height can be 1.5; in still some other embodiments, the ratio of the third width to the third height can be values such as 1.1, 1.2, and 1.3. Those skilled in the art can select a suitable ratio within the above ratio range according to actual design requirements, and no further limitations are imposed herein.

[0055] An optional embodiment of the utility model, referring to Figure 1 and Figure 2 As shown, the inner pot of the rice cooker may include an arc-shaped side portion 2 and a bottom portion 1 connected to the arc-shaped side portion 2. The height between the end of the arc-shaped side portion 2 away from the bottom portion 1 and the return arc point 3 is the first height, and the height between the bottom portion 1 and the return arc point 3 of the arc-shaped side portion 2 is the second height. Among them, the return arc point 3 refers to the point where the horizontal distance of the arc-shaped side portion from the central axis of the inner pot of the rice cooker is the farthest. And the ratio of the first height to the second height is between 0.5 and 2. The horizontal distance of the arc-shaped side portion 2 at the return arc point 3 is the third width, and the height of the arc-shaped side portion 2 is the third height. The ratio between the third width and the third height is between 1 and 1.5. The horizontal distance between the center of the bottom portion 1 and the connection portion of the bottom portion 1 and the arc-shaped side portion 2 is the fourth width, and the ratio between the third width and the fourth width is between 4 / 3 and 4.

[0056] In the embodiment of the present utility model, the inner pot of the rice cooker may include an arc-shaped side portion 2 and a bottom portion 1 connected to the arc-shaped side portion 2. Among them, as a preferred embodiment, the arc-shaped side portion 2 and the bottom portion 1 may be an integral structure. The arc-shaped side portion 2 may be the side wall of the inner pot of the rice cooker, protruding outward from the outside of the inner pot of the rice cooker. It may be formed by connecting at least one arc portion. Among them, the return arc point 3 refers to the point where the horizontal distance of the arc-shaped side portion from the central axis of the inner pot of the rice cooker is the farthest. In other words, the return arc point 3 can also be understood as the position where the radius of the cross-section corresponding to the arc-shaped side portion 2 in the horizontal direction is the largest.

[0057] Thus, the height between the end of the arc-shaped side portion 2 away from the bottom portion 1 and the return arc point 3 is the first height. For example, the first height is denoted as H1, and the height between the bottom portion 1 and the return arc point 3 of the arc-shaped side portion 2 is the second height, where the second height is denoted as H2. Thus, the ratio (H1 / H2) of the first height to the second height is limited to between 0.5 and 2, which can ensure the water flow efficiency of the inner pot of the rice cooker on the basis of considering the cooking water volume added by the user.

[0058] For example, when the ratio of the first height to the ratio of the second height is less than 0.5, the height of the corresponding arc return point 3 is too high, which is higher than the maximum water volume of the rice, greatly reducing the water flow efficiency of the inner pot. For another example, when the ratio of the first height to the ratio of the second height is greater than 2, it is determined that the height of the arc return point 3 from the bottom 1 is too low, and at the same time, the water flow efficiency of the inner pot of the rice cooker cannot be improved.

[0059] Therefore, the ratio (H1 / H2) of the first height to the second height is limited to between 0.5 and 2, which can ensure that the arc return point 3 is between the bottom 1 and the maximum water volume height, and is close to the maximum water volume height. Thus, during the process of cooking rice, the central temperature of the inner pot of the rice cooker is lower than the temperature on the arc-shaped side portion 2, so that the heated water vapor can rise along the arc-shaped side portion 2. Since the central temperature of the inner pot of the rice cooker is relatively low, the corresponding water descends from the center of the inner pot of the rice cooker to the bottom 1. A heat convection is formed. This enables the moisture in the rice to fully circulate to the rice on the upper layer. And it can accelerate the water absorption of the ingredients on the upper layer, thereby reducing the risk of undercooked rice on the upper layer.

[0060] In some embodiments, the ratio of the first height to the second height can be 0.5; in other embodiments, the ratio of the first height to the second height can be 2; in still other embodiments, the ratio of the first height to the second height can be values such as 1, 1.5, and 1.8. Those skilled in the art can select a suitable ratio within the above ratio range according to actual design requirements, and no further limitation will be made here.

[0061] The horizontal distance of the arc-shaped side portion 2 at the arc return point 3 is the third width W3, that is, the cross-sectional radius at the B-B position. Among them, the third width can also be understood as the maximum horizontal distance corresponding to the inner pot of the rice cooker. The height of the arc-shaped side portion 2 is the third height H3, and the third height can also be understood as the total height of the food accommodation cavity formed by the inner pot of the rice cooker. The third height is equal to the sum of the first height and the second height, that is, H3 = H1 + H2. Limiting the ratio of the third width to the third height (W3 / H3) to between 1 and 1.5 can be understood as limiting the width-to-height ratio of the inner pot of the rice cooker to between 1 and 1.5. This makes the width of the inner pot of the rice cooker greater than or equal to the height of the inner pot of the rice cooker, so that the height of the water added during rice cooking can be reduced. Thus, the water can flow to the rice on the upper layer faster, avoiding the problem of undercooked rice on the upper layer. And it can improve the cooking effect and taste of the rice.

[0062] When the third width and the third height are less than 1, the height of the inner pot of the rice cooker is too high, which increases the difficulty of the heated water vapor rising along the arc-shaped side portion 2 and the upper-layer ingredients absorbing water. When the third width and the third height are greater than 1.5, the width of the inner pot of the rice cooker is too wide, the placement area occupied by the rice cooker is too large, and there may be a situation where the amount of cooked rice by the user cannot cover the bottom 1, reducing the user experience.

[0063] In some embodiments, the ratio of the third width to the third height can be 1; in some other embodiments, the ratio of the third width to the third height can be 1.5; in still some other embodiments, the ratio of the third width to the third height can be values such as 1.1, 1.2, and 1.3. Those skilled in the art can select a suitable ratio within the above ratio range according to actual design requirements, and no further limitation is made here.

[0064] The horizontal distance between the center of the bottom 1 and the connection between the bottom 1 and the arc-shaped side portion 2 is the fourth width W4. That is, the horizontal distance from the central axis at A-A to C-C. Among them, the fourth width can also be understood as the radius of the bottom 1. The ratio between the third width and the fourth width (W3 / W4) is between 4 / 3 - 4. This can ensure the arc of the arc-shaped side portion 2 protruding outward away from the center of the inner pot of the rice cooker and the cross-sectional area of the bottom 1. On the one hand, it can further improve the upward flow of water vapor along the arc-shaped side portion 2 and accelerate the water absorption rate of the upper-layer rice. On the other hand, it can increase the contact area between the bottom 1 and the heat source, improve the uniform heating of the bottom 1, thereby reducing the risk of the lower-layer rice getting scorched and improving the cooking effect of the rice.

[0065] When the ratio between the third width and the fourth width is greater than 4, the cross-sectional area of the bottom 1 is too small, reducing the placement stability of the inner pot of the rice cooker. Moreover, since the rice cooker works by contacting the bottom 1 with the heating device located below the bottom 1 for heating, the too-small cross-sectional area of the bottom 1 will also cause the heating device to heat the bottom 1 too concentratedly, easily leading to situations such as the lower-layer rice getting scorched.

[0066] When the ratio between the third width and the fourth width is less than 4 / 3, the cross-sectional area of the bottom 1 is too large, resulting in too small an arc of the arc-shaped side portion 2 protruding outward away from the center of the inner pot of the rice cooker. This is not conducive to the upward flow of water vapor along the arc-shaped side portion 2.

[0067] In some embodiments, the ratio between the third width and the fourth width may be 4 / 3; in other embodiments, the ratio between the third width and the fourth width may be 4; in still other embodiments, the ratio between the third width and the fourth width may be values such as 1.25, 2, 3, and 3.5. Those skilled in the art can select a suitable ratio within the above ratio range according to actual design requirements, and no further limitations are made herein.

[0068] An optional embodiment of the utility model, the inner pot of the rice cooker may include an arc-shaped side portion 2 and a bottom portion 1 connected to the arc-shaped side portion 2. The height from the end of the arc-shaped side portion 2 away from the bottom portion 1 to the arc return point 3 is the first height, and the height from the bottom portion 1 to the arc return point 3 of the arc-shaped side portion 2 is the second height. Wherein, the arc return point 3 refers to the point where the horizontal distance from the arc-shaped side portion to the central axis of the inner pot of the rice cooker is the farthest. And, the ratio of the first height to the second height is between 0.5 and 2. The horizontal distance of the arc-shaped side portion 2 at the arc return point 3 is the third width, the height of the arc-shaped side portion 2 is the third height, and the ratio between the third width and the third height is between 1 and 1.5. The horizontal distance between the center of the bottom portion 1 and the connection portion of the bottom portion 1 and the arc-shaped side portion 2 is the fourth width, and the ratio between the third width and the fourth width is between 4 / 3 and 4. Wherein, the arc-shaped side portion 2 includes a first arc-shaped portion 21, and the first arc-shaped portion 21 is smoothly connected to the bottom portion 1, and the arc return point 3 is located on the first arc-shaped portion 21.

[0069] In the embodiment of the present utility model, the inner pot of the rice cooker may include an arc-shaped side portion 2 and a bottom portion 1 connected to the arc-shaped side portion 2. Wherein, as a preferred embodiment, the arc-shaped side portion 2 and the bottom portion 1 may be an integral structure. The arc-shaped side portion 2 may be the side wall of the inner pot of the rice cooker, protruding outward from the outside of the inner pot of the rice cooker. It may be formed by connecting at least one arc-shaped portion. Wherein, the arc return point 3 refers to the point where the horizontal distance from the arc-shaped side portion to the central axis of the inner pot of the rice cooker is the farthest. In other words, the arc return point 3 can also be understood as the position where the radius corresponding to the cross-section of the arc-shaped side portion 2 in the horizontal direction is the largest.

[0070] Thus, the height from the end of the arc-shaped side portion 2 away from the bottom portion 1 to the arc return point 3 is the first height. For example, the first height is denoted as H1, and the height from the bottom portion 1 to the arc return point 3 of the arc-shaped side portion 2 is the second height, where the second height is denoted as H2. Thus, the ratio of the first height to the second height (H1 / H2) is limited between 0.5 and 2, which can ensure the water flow efficiency of the inner pot of the rice cooker on the basis of considering the cooking water amount added by the user.

[0071] For example, when the ratio of the first height and the ratio of the second height are less than 0.5, the height of the corresponding arc return point 3 is too high, which is higher than the maximum water volume of the rice, greatly reducing the water flow efficiency of the inner pot. For another example, when the ratio of the first height and the ratio of the second height are greater than 2, it is determined that the height of the arc return point 3 from the bottom 1 is too low, and at the same time, the water flow efficiency of the inner pot of the rice cooker cannot be improved.

[0072] Therefore, the ratio (H1 / H2) of the first height and the second height is limited between 0.5 and 2, which can ensure that the arc return point 3 is between the bottom 1 and the maximum water volume height, and is close to the maximum water volume height. Thus, during the process of cooking rice, the central temperature of the inner pot of the rice cooker is lower than the temperature on the arc-shaped side 2, so that the heated water vapor can rise along the arc-shaped side 2. Since the central temperature of the inner pot of the rice cooker is relatively low, the corresponding water descends from the center of the inner pot of the rice cooker to the bottom 1. A heat convection is formed. This enables the moisture of the rice to fully flow to the rice located in the upper layer. And it can accelerate the water absorption of the upper-layer ingredients, thereby reducing the risk of undercooked rice in the upper layer.

[0073] In some embodiments, the ratio of the first height and the second height can be 0.5; in other embodiments, the ratio of the first height and the second height can be 2; in still other embodiments, the ratio of the first height and the second height can be values such as 1, 1.5, and 1.8. Those skilled in the art can select a suitable ratio within the above ratio range according to actual design requirements, and no further limitation is made here.

[0074] The horizontal distance of the arc-shaped side 2 at the arc return point 3 is the third width W3, that is, the cross-sectional radius at the B-B position. Among them, the third width can also be understood as the maximum horizontal distance corresponding to the inner pot of the rice cooker. The height of the arc-shaped side 2 is the third height H3, and the third height can also be understood as the total height of the food accommodation cavity formed by the inner pot of the rice cooker. The third height is equal to the sum of the first height and the second height, that is, H3 = H1 + H2. Limiting the ratio of the third width and the third height (W3 / H3) between 1 and 1.5 can be understood as limiting the width-height ratio of the inner pot of the rice cooker between 1 and 1.5. This makes the width of the inner pot of the rice cooker greater than or equal to the height of the inner pot of the rice cooker, so that the height of the water added during rice cooking can be reduced. Thus, the water can flow to the rice in the upper layer faster, avoiding the problem of undercooked rice in the upper layer. And it can improve the cooking effect and taste of the rice.

[0075] When the third width and the third height are less than 1, the height of the inner pot of the rice cooker is too high, which increases the difficulty of the heated water vapor rising along the arc side portion 2 and the upper layer of food absorbing water. When the third width and the third height are greater than 1.5, the width of the inner pot of the rice cooker is too wide, the placement area occupied by the rice cooker is too large, and there may be a situation where the amount of cooked rice by the user cannot cover the bottom 1, reducing the user experience.

[0076] In some embodiments, the ratio of the third width to the third height can be 1; in some other embodiments, the ratio of the third width to the third height can be 1.5; in still some other embodiments, the ratio of the third width to the third height can be values such as 1.1, 1.2, and 1.3. Those skilled in the art can select a suitable ratio within the above ratio range according to actual design requirements, and no further limitation is made here.

[0077] The horizontal distance between the center of the bottom 1 and the connection between the bottom 1 and the arc side portion 2 is the fourth width W4. Among them, the fourth width can also be understood as the radius of the bottom 1. The ratio between the third width and the fourth width (W3 / W4) is between 4 / 3 - 4. It can ensure the arc of the arc side portion 2 protruding outward away from the center of the inner pot of the rice cooker and the cross-sectional area of the bottom 1. On the one hand, it can further improve the upward flow of water vapor along the arc side portion 2 and accelerate the water absorption rate of the upper layer of rice. On the other hand, it can increase the contact area between the bottom 1 and the heat source, improve the heat uniformity of the bottom 1, thereby reducing the risk of the lower layer of rice getting scorched and improving the cooking effect of the rice.

[0078] If the ratio between the third width and the fourth width is greater than 4, the cross-sectional area of the bottom 1 is too small, reducing the placement stability of the inner pot of the rice cooker. And since the rice cooker works by contacting the bottom 1 with the heating device located under the bottom 1 for heating, the too small cross-sectional area of the bottom 1 will also cause the heating device to heat the bottom 1 too concentratedly, easily resulting in situations such as the lower layer of rice getting scorched.

[0079] If the ratio between the third width and the fourth width is less than 4 / 3, the cross-sectional area of the bottom 1 is too large, resulting in too small an arc of the arc side portion 2 protruding outward away from the center of the inner pot of the rice cooker. It is not conducive to the upward flow of water vapor along the arc side portion 2.

[0080] In some embodiments, the ratio between the third width and the fourth width may be 4 / 3; in other embodiments, the ratio between the third width and the fourth width may be 4; in still other embodiments, the ratio between the third width and the fourth width may be values such as 1.25, 2, 3, and 3.5. Those skilled in the art can select a suitable ratio within the above ratio range according to actual design requirements, and no further limitations are made herein.

[0081] The arc-shaped side portion 2 may include a first arc portion 21, the first arc portion 21 is smoothly connected to the bottom portion 1, and the return arc point 3 is located on the first arc portion 21. The cross-sectional shape of the first arc portion 21 in the vertical direction may be a circular arc or an elliptical arc. Among them, the circular arc refers to the arc length part formed by any two points on the circle, and the elliptical arc refers to the arc length part formed by any two points on the ellipse, and the return arc point 3 is located on the first arc portion 21.

[0082] In some other alternative utility model embodiments, referring to Figure 1 and Figure 2 as shown, the arc-shaped side portion 2 includes a first arc portion 21 and a second arc portion 22 that is smoothly connected to the first arc portion 21. The cross-sectional shape of the first arc portion 21 in the vertical direction may be a circular arc or an elliptical arc, and the cross-sectional shape of the second arc portion 22 in the vertical direction may be an elliptical arc or a circular arc. Among them, smooth connection can be understood as that the first arc portion 21 and the second arc portion 22 are tangent at the connection. The second arc portion 22 is smoothly connected to the bottom portion 1. The return arc point 3 may be provided on the first arc portion 21 or on the second arc portion 22.

[0083] An alternative utility model embodiment, the arc-shaped side portion 2 includes a first arc portion 21, a second arc portion 22, and a third arc portion. Among them, the first arc portion 21 is smoothly connected to the second arc portion 22, the second arc portion 22 is smoothly connected to the third arc portion, and the third arc portion is smoothly connected to the bottom portion 1.

[0084] In the embodiment of the present utility model, the arc-shaped side portion 2 includes a first arc-shaped portion 21, a second arc-shaped portion 22, and a third arc-shaped portion. The cross-sectional shape of the first arc-shaped portion 21 in the vertical direction may be an elliptical arc, and the cross-sectional shape of the second arc-shaped portion 22 in the vertical direction may be an elliptical arc. The cross-sectional shape of the third arc-shaped portion in the vertical direction may be an elliptical arc. Among them, the first arc-shaped portion 21 and the second arc-shaped portion 22 are smoothly connected, which can be understood as that the first arc-shaped portion 21 and the second arc-shaped portion 22 are tangent at the connection. The second arc-shaped portion 22 and the third arc-shaped portion are smoothly connected, which can be understood as that the second arc-shaped portion 22 and the third arc-shaped portion are tangent at the connection. The smooth connection between the third arc-shaped portion and the bottom 1 can be understood as that the third arc-shaped portion and the bottom 1 are tangent at the connection.

[0085] The return arc point 3 can be set on the first arc-shaped portion 21, or the return arc point 3 can be set on the second arc-shaped portion 22, or the return arc point 3 can be set on the third arc-shaped portion, and no more limitations are made here.

[0086] In some other alternative embodiments of the present utility model, the arc-shaped side portion 2 may be composed of at least four arc-shaped portions. The cross-sectional shape of each arc-shaped portion in the vertical direction may be an elliptical arc, and adjacent two arc-shaped portions can be smoothly connected, and the arc-shaped portion close to the bottom 1 (which can also be understood as the arc-shaped portion located at the bottommost) is smoothly connected to the bottom 1.

[0087] In an alternative embodiment of the present utility model, the bottom 1 and the arc-shaped side portion 2 are respectively composed of a metal layer or a composite metal layer.

[0088] In the embodiment of the present utility model, the composite metal layer can be understood as being formed by combining multiple different metal layers. For example, the metal layer can be made of a metal material with good heat conduction performance. For a single-layer metal layer, the material used can be a pure metal material such as aluminum, or a metal material such as aluminum alloy, and no more limitations are made here. Good heat conduction performance is beneficial to heat transfer from the bottom 1 to the rice in the inner container, and at the same time, it can improve the horizontal heat transfer efficiency of the bottom 1, improve the temperature uniformity of the bottom 1, and reduce the risk of the lower-layer rice being scorched due to excessive local temperature of the bottom 1.

[0089] In an alternative embodiment of the present utility model, the thickness of the bottom 1 is between 1.5 mm and 3.5 mm. And the thickness of the arc-shaped side portion 2 is between 1.5 mm and 3.5 mm.

[0090] In the embodiment of the present utility model, the thicknesses of the bottom 1 and the arc-shaped side portion 2 are both limited to be between 1.5 mm and 3.5 mm, which can prevent the inner pot of the rice cooker from being too thin, resulting in low lateral heat transfer efficiency of the bottom 1, and thus causing serious heat concentration on the bottom 1. It can also prevent the inner pot of the rice cooker from being too thick, with too low heat transfer efficiency, resulting in excessive energy consumption.

[0091] In an alternative embodiment of the utility model, the difference in thickness between the bottom 1 and the arc-shaped side portion 2 is less than or equal to 2 mm. Thus, the thickness of each part of the inner pot of the rice cooker is uniform, which can facilitate reducing the production difficulty.

[0092] In some alternative embodiments, referring to Figure 2 As shown, a hem 4 can also be horizontally provided at the top end of the arc-shaped side portion 2. The hem 4 is located on the end face of the arc-shaped side portion 2 away from the center of the inner pot of the rice cooker, so that the inner pot of the rice cooker can be limited in the vertical direction by the cooperation of the hem 4 and the housing of the rice cooker.

[0093] For example, as a specific embodiment, the thicknesses of both the arc-shaped side portion 2 and the bottom 1 can be 2 mm. Among them, the ratio of the first height to the second height can be 1.5; the ratio of the first width to the second width is 2; the ratio of the third width to the third height is 1.2; the ratio between the third width and the fourth width is 1.25. Among them, the arc-shaped side portion 2 can include a first arc portion 21 and a second arc portion 22. The radius R1 of the first arc portion 21 is 110 mm, and the radius R2 of the second arc portion 22 is 50 mm. The test results for the above embodiments show that the embodiment of the present utility model can increase the temperature of the upper layer of the rice by about 9%, and the temperature of the bottom 1 can be concentratedly reduced by about 14%. Thus, it can improve the situation where the lower layer of the rice is scorched and the upper layer of the rice is prone to being undercooked, greatly improving the user experience.

[0094] In summary, the embodiment of the present utility model discloses an inner pot of a rice cooker. The inner pot of the rice cooker can include an arc-shaped side portion 2 and a bottom 1 connected to the arc-shaped side portion 2. The height from the end of the arc-shaped side portion 2 away from the bottom 1 to the return arc point 3 is the first height, and the height from the bottom 1 to the return arc point 3 of the arc-shaped side portion 2 is the second height. Among them, the return arc point 3 refers to the point where the horizontal distance of the arc-shaped side portion from the central axis of the inner pot of the rice cooker is the farthest. And the ratio of the first height to the second height is between 0.5 and 2. Thus, the side wall radian of the inner pot can be ensured by the above ratio limitation, which is beneficial to the heat flow flowing along the side wall, accelerating the water absorption of the upper layer of ingredients, and thus reducing the risk of the upper layer of the rice being undercooked during cooking.

[0095] An embodiment of the present utility model also provides a rice cooker, which may include an inner pot of the rice cooker as described in any one of the above-mentioned utility model embodiments. Among them, the rice cooker may include an arc-shaped side portion 2 and a bottom portion 1 connected to the arc-shaped side portion 2. The height between the end of the arc-shaped side portion 2 far from the bottom portion 1 and the arc return point 3 is a first height, and the height between the bottom portion 1 and the arc return point 3 of the arc-shaped side portion 2 is a second height. Among them, the arc return point 3 refers to the point where the horizontal distance of the arc-shaped side portion from the central axis of the inner pot of the rice cooker is the farthest. And the ratio of the first height to the second height is between 0.5 and 2. Thus, the side wall radian of the inner pot can be ensured by the above ratio limitation, which is beneficial to the heat flow flowing along the side wall and accelerating the water absorption of the upper-layer ingredients, thereby reducing the risk of the upper-layer rice being undercooked during cooking.

[0096] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0097] It is easy for those skilled in the art to think that any combination application of the above-mentioned various embodiments is feasible. Therefore, any combination among the above-mentioned various embodiments is an implementation scheme of the present utility model. However, due to space limitations, this specification will not elaborate on each one here.

[0098] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0099] Similarly, it should be understood that in order to streamline the present utility model and help understand one or more of the various utility model aspects, in the above description of the exemplary embodiments of the present utility model, the various features of the present utility model are sometimes grouped together into a single embodiment, figure, or description thereof.

[0100] In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present utility model and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

Claims

1. An inner pot of an electric rice cooker, characterized in that, The inner pot of the rice cooker includes an arc-shaped side portion (2) and a bottom portion (1) connected to the arc-shaped side portion (2). The height between the end of the arc-shaped side portion (2) far from the bottom portion (1) and the arc return point (3) on the arc-shaped side portion (2) is the first height, and the height between the bottom portion (1) and the arc return point (3) of the arc-shaped side portion (2) is the second height. Wherein, the arc return point (3) refers to the point on the arc-shaped side portion (2) with the farthest horizontal distance from the central axis of the inner pot of the rice cooker, and the ratio of the first height to the second height is between 0.5 and 2.

2. The inner pot of the rice cooker according to claim 1, wherein The horizontal distance between the connection of the arc-shaped side portion (2) and the bottom portion (1) and the arc return point (3) is the first width, and the horizontal distance between the end face of the arc-shaped side portion (2) far from the bottom portion (1) and the arc return point (3) is the second width. Wherein, the ratio of the first width to the second width is between 1 and 3.

3. The inner pot of the rice cooker according to claim 1, characterized in that, The horizontal distance from the arc return point (3) to the central axis of the inner pot of the rice cooker is the third width, the height of the arc-shaped side portion (2) is the third height, and the ratio between the third width and the third height is between 1 and 1.

5.

4. The inner pot of the rice cooker according to claim 3, wherein, The horizontal distance between the center of the bottom portion (1) and the connection of the bottom portion (1) and the arc-shaped side portion (2) is the fourth width, and the ratio between the third width and the fourth width is between 4 / 3 and 4.

5. The inner pot of the rice cooker according to claim 1, characterized in that The arc-shaped side portion (2) includes a first arc portion (21), and the first arc portion (21) is smoothly connected to the bottom portion (1), and the arc return point (3) is located on the first arc portion (21).

6. The inner pot of the rice cooker according to claim 1, characterized in that The arc-shaped side portion (2) includes a first arc portion (21) and a second arc portion (22) smoothly connected to the first arc portion (21), wherein the second arc portion (22) is smoothly connected to the bottom portion (1).

7. The inner pot of the rice cooker according to claim 1, characterized in that, The arc-shaped side portion (2) includes a first arc portion (21), a second arc portion (22) and a third arc portion. The first arc portion (21) is smoothly connected to the second arc portion (22), the second arc portion (22) is smoothly connected to the third arc portion, and the third arc portion is smoothly connected to the bottom portion (1).

8. The inner pot of the rice cooker according to claim 1, characterized in that, The arc-shaped side portion (2) includes at least four arc portions, and adjacent two arc portions are smoothly connected, and the arc portion close to the bottom portion (1) is smoothly connected to the bottom portion (1).

9. The inner pot of the rice cooker according to claim 1, wherein, The bottom portion (1) and the arc-shaped side portion (2) are respectively composed of a metal layer or a composite metal layer.

10. The inner pot of the rice cooker according to claim 1, characterized in that, The thickness of the bottom portion (1) is between 1.5 mm and 3.5 mm.

11. The inner pot of the rice cooker according to claim 1, characterized in that, The thickness of the arc-shaped side portion (2) is between 1.5 mm and 3.5 mm.

12. The inner pot of the rice cooker according to claim 1, characterized in that, The difference in thickness between the bottom portion (1) and the arc-shaped side portion (2) is less than or equal to 2 mm.

13. An electric rice cooker, characterized in that, The rice cooker includes the inner pot of the rice cooker according to any one of claims 1-12.

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