CN111084540A

CN111084540A - Rice cooker

Info

Publication number: CN111084540A
Application number: CN202010076320.0A
Authority: CN
Inventors: 李佳宏; 胡玉新; 李锦彬; 郑芝云; 陈崇得; 孔进喜
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-05-01
Also published as: WO2021147588A1

Abstract

The invention provides a rice cooker, comprising: the inner pot and the bracket are provided with a heating component; the inner pot is arranged on the middle frame, and the middle frame is movably connected to the bracket; and the driving mechanism is used for driving the inner pot and/or the middle frame to move relative to the bracket. The inner pot can face different parts of the inner pot to the heating assembly in the moving process, so that the actual heating area of the heating assembly is increased. On the other hand, because interior pot takes place the motion for the support, consequently the inside edible material of interior pot also takes place the motion along with interior pot, makes edible material through flowing can be more even carry out the heat transfer with interior pot outer wall. Simultaneously, according to the different motion state of interior pot, can form the edible material that the stranded flow direction is different in pot inside in, make edible material constantly take place the striking at the culinary art in-process to improve heat exchange efficiency, make edible material be heated more evenly, the difficult condition that takes place the temperature layering.

Description

Rice cooker

Technical Field

The invention relates to the technical field of kitchen equipment, in particular to a rice cooker.

Background

A rice cooker is a common kitchen utensil, and generally includes an inner pot, and a heating assembly disposed toward the inner pot. In the existing rice cooker, a heating component transfers heat through the side wall of an inner pot to heat food in the inner pot. Therefore, the temperature distribution in the inner pot has a temperature gradient which gradually becomes lower from the outer wall of the inner pot to the inner temperature of the inner pot.

The food material is cooked in an environment with uneven temperature distribution, resulting in uneven heating of the food material itself. Therefore, the cooker is not easy to master the duration and part of the food materials are not cooked and part of the food materials are cooked thoroughly in the same cooking time.

The user is not easy to grasp the cooking time of the food, resulting in the deterioration of user experience.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that the food materials are not uniformly heated by the rice cooker in the prior art, so that the rice cooker is provided.

A rice cooker comprising:

the inner pot and the support are provided with heating components;

the inner pot is arranged on the middle frame, and the middle frame is movably connected to the support;

and the driving mechanism is used for driving the inner pot and/or the middle frame to move relative to the bracket.

The bracket includes:

the middle frame is rotatably supported on the first rotary supporting part;

the output end of the first driving motor is connected with the middle frame.

The first slewing bearing portion has two, two first slewing bearing portion symmetry sets up in the middle frame both sides.

The middle frame includes:

the first rotary shaft is provided with one end pointing to the inner pot and the other end extending to the first rotary supporting part, the first rotary supporting part comprises a first rotary supporting groove, and the first rotary shaft is rotatably supported in the first rotary supporting groove.

The middle frame further comprises:

the first rotating shaft is arranged on the limiting part;

the second slewing bearing portion is arranged on the limiting portion, the inner pot faces the limiting portion and extends out of the second rotating shaft, and the second rotating shaft is rotatably supported in the second slewing bearing portion.

And the extension lines of the first rotating shaft and the second rotating shaft are intersected to obtain the rotating center of the inner pot.

Spacing portion is the annular, the inboard orientation of spacing portion interior pot sets up, the outside orientation of spacing portion first slewing bearing portion sets up.

The circle center of the limiting part is positioned on the rotation center of the inner pot.

The middle frame further comprises:

and the second driving motor is arranged on the limiting part, and the output end of the second driving motor is connected with the second rotating shaft.

The inner pot further comprises:

the vortex is protruding to be located on the inner wall of interior pot, the vortex is protruding to the inside of interior pot is protruding.

The turbulence protrusion is arranged on one side, far away from the pot cover, of the inner pot.

The vortex protrusion is arc-shaped and extends along the inner wall of the inner pot.

The turbulent flow bulges are three, and the included angle between every two adjacent turbulent flow bulges is 120 degrees.

The pot cover is kept away from to protruding one end of vortex, and the height H that the other end extends is not less than heating element's height H.

The technical scheme of the invention has the following advantages:

1. the invention provides a rice cooker, comprising: the inner pot and the support are provided with heating components; the inner pot is arranged on the middle frame, and the middle frame is movably connected to the support; and the driving mechanism is used for driving the inner pot and/or the middle frame to move relative to the bracket.

When the inner pot works, the inner pot can move relative to the bracket under the driving of the driving mechanism, and the heating assembly is positioned on the bracket. Therefore, the inner pot can face different parts of the inner pot to the heating assembly in the moving process, so that the actual heating area of the heating assembly is increased, and the problem that different parts of the inner pot are not uniformly heated is solved. On the other hand, because interior pot takes place the motion for the support, consequently the inside edible material of pot also takes place the motion along with interior pot in, especially when making a soup or cooking porridge, the material of flow is changeed and is taken place to flow, makes edible material through flow can be more even carry out the heat transfer with interior pot outer wall. Simultaneously, according to the different motion state of interior pot, can form the edible material that the stranded flow direction is different in pot inside in, make edible material constantly take place the striking at the culinary art in-process to improve heat exchange efficiency, make edible material be heated more evenly, the difficult condition that takes place the temperature layering.

2. The invention provides a rice cooker, the support comprises: the middle frame is rotatably supported on the first rotary supporting part; the output end of the first driving motor is connected with the middle frame.

The middle frame is rotatably supported on the first rotary supporting part, so that the middle frame rotates under the driving of the first driving motor. The inner pot is arranged on the middle frame, so that the inner pot rotates together with the middle frame.

3. The rice cooker provided by the invention is characterized in that the number of the first rotary supporting parts is two, and the two first rotary supporting parts are symmetrically arranged on two sides of the middle frame.

The first rotation supporting parts symmetrically arranged on two sides of the middle frame can support the middle frame more stably, so that the inner pot can move stably. When the user uses, can avoid hot water to spatter outward, improve user experience.

4. The invention provides a rice cooker, wherein the middle frame comprises: the first rotary shaft is provided with one end pointing to the inner pot and the other end extending to the first rotary supporting part, the first rotary supporting part comprises a first rotary supporting groove, and the first rotary shaft is rotatably supported in the first rotary supporting groove.

First gyration is supported the groove and can be improved with the foundation area of first pivot, improves first pivot pivoted stationarity.

5. The invention provides a rice cooker, the middle frame further comprises: the first rotating shaft is arranged on the limiting part; the second slewing bearing portion is arranged on the limiting portion, the inner pot faces the limiting portion and extends out of the second rotating shaft, and the second rotating shaft is rotatably supported in the second slewing bearing portion.

The second rotating shaft is positioned on the limiting part, so that when the middle frame can drive the inner pot to rotate by taking the first rotating shaft as a center, the inner pot can also rotate relative to the middle frame by taking the second rotating shaft as a center. This scheme has increased the rotation range of interior pot, has improved the rotation range of interior pot, has further improved the even degree that interior pot itself was heated, has still aggravated the inside motion of eating the material of interior pot to the even degree that edible material was heated has been promoted.

6. According to the rice cooker provided by the invention, the extension lines of the first rotating shaft and the second rotating shaft are intersected to obtain the rotating center of the inner cooker.

When the extension lines of the first rotating shaft and the second rotating shaft are intersected, the rotating amplitude of the inner pot can be further improved, and the distance between the inner pot and the heating assembly on the support is unchanged in the rotating process of the inner pot.

7. The rice cooker provided by the invention is characterized in that the limiting part is annular, the inner side of the limiting part faces the inner pot, and the outer side of the limiting part faces the first rotary supporting part.

The spacing portion of annular mutually supports with spherical interior pot, can make interior pot rotate the in-process and basically unchangeable with the distance between the spacing portion, and the pot takes place to interfere with spacing portion when preventing to rotate.

8. According to the rice cooker provided by the invention, the circle center of the limiting part is positioned on the rotation center of the inner cooker.

Prevent the inner pot from generating interference due to the change of the clearance between the inner pot and the limiting part in the rotating process.

9. The invention provides a rice cooker, the middle frame further comprises: and the second driving motor is arranged on the limiting part, and the output end of the second driving motor is connected with the second rotating shaft.

The second rotating shaft is driven by the second driving motor to rotate, so that the inner pot is driven to rotate.

10. The invention provides a rice cooker, the inner cooker also comprises: the vortex is protruding to be located on the inner wall of interior pot, the vortex is protruding to the inside of interior pot is protruding.

The turbulence protrusions can increase the roughness of the inner wall of the inner pot, so that the ability of the inner pot for driving food materials to flow is improved. When the inner pot rotates, liquid in the inner pot can generate vortex. According to the boundary layer theory, the fluid will flow against the inner pot surface. When the surface of the inner pot is provided with the bulges, the fluid can be peeled off at the highest position of the ribs and washed off in the vertical direction, and the fluid appears to the center of the inner pot on the inner pot. And because of the space behind the ribs the fluid slows down, according to bernoulli's theorem, where the pressure increases, thus causing vortices to be generated there. Therefore, according to the two points, the surface of the inner pot is additionally provided with the bulges, and when the inner pot moves, the disturbance to the fluid is increased, so that more fluid is diffused to the center of the inner pot.

11. According to the rice cooker provided by the invention, the turbulence protrusions are arranged on one side, far away from the cooker cover, of the inner cooker.

Guarantee that the vortex is protruding can the bigger degree with the edible material contact of interior pot.

12. According to the rice cooker provided by the invention, the turbulence protrusions are arc-shaped and extend along the inner wall of the inner pot.

The disturbance area of the turbulence protrusions is increased.

13. According to the rice cooker provided by the invention, the number of the turbulence protrusions is three, and the included angle between every two adjacent turbulence protrusions is 120 degrees.

The turbulence protrusions are used for stirring the food materials and enabling the food materials to be heated uniformly. Therefore, three turbulence protrusions arranged at an angle of 120 degrees can have a better effect of stirring food materials to be heated.

14. According to the rice cooker provided by the invention, one end of the turbulence protrusion is far away from the cooker cover, and the extending height H of the other end of the turbulence protrusion is not less than the height H of the heating component.

Because heating element plays the heating effect, the temperature that consequently interior pot is close to the heating element part is higher relatively, consequently, the vortex arch can play the intensive mixing to the position setting that is close to heating element, improves the homogeneity of eating material temperature distribution. Because the inner pot can rotate in the working process, when the value of H is larger than the value of H, the food material near the heating assembly can flow to a greater extent in the rotating process.

Drawings

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

FIG. 1 is a front view showing the structure of the present invention;

FIG. 2 is a right side view of the rice cooker of FIG. 1;

FIG. 3 is a sectional view showing the inner structure of the inner pot at A-A in FIG. 1;

fig. 4 is a sectional view showing a structure of the rice cooker at B-B in fig. 2.

Description of reference numerals:

1. an inner pot; 11. a second rotating shaft; 111. a second drive gear; 12. a turbulent flow bulge; 13. a pot cover; 2. a support; 21. heating the plate; 211. a concave surface; 22. a first slewing support; 23. a first drive motor; 3. a middle frame; 31. a limiting part; 32. a first rotating shaft; 321. a first drive gear; 33. a second slewing support portion; 34. a second drive motor.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment provides a rice cooker, as shown in fig. 1 and 2, including: the inner pot comprises an inner pot 1 and a support 2, wherein a heating assembly is arranged on the support 2; the middle frame 3, the inner pot 1 is arranged on the middle frame 3, and the middle frame 3 is movably connected to the bracket 2; and the driving mechanism is used for driving the inner pot 1 and/or the middle frame 3 to move relative to the bracket 2. When the inner pot 1 works, the inner pot can move relative to the bracket 2 under the driving of the driving mechanism, and the heating component is positioned on the bracket 2. Therefore, the inner pot 1 can move towards the heating assembly from different positions of the inner pot 1, so that the actual heating area of the heating assembly is increased, and the problem that the different positions of the inner pot 1 are heated unevenly is solved. On the other hand, because interior pot 1 takes place the motion for support 2, consequently the inside edible material of interior pot 1 also takes place the motion along with interior pot 1, especially when making a soup or making a porridge, the material of eating that flows is changeed and is taken place to flow, makes edible material through flowing can be more even carry out the heat transfer with interior pot 1 outer wall. Simultaneously, according to the different motion state of interior pot 1, can form the edible material that the stranded flow direction is different in pot 1 inside in, make edible material constantly take place the striking at the culinary art in-process to improve heat exchange efficiency, make edible material be heated more evenly, the difficult condition that takes place the temperature layering.

The shape of the inner pot 1 is not particularly limited, and in this embodiment, as shown in fig. 1 and 2, the inner pot 1 is spherical. As an alternative embodiment, the inner pot 1 may be of any shape with a certain receiving space.

In this embodiment, as shown in fig. 2 and 4, the bracket 2 includes: a first slewing bearing portion 22, on which the intermediate frame 3 is slewing-supported; a first driving motor 23, wherein the output end of the first driving motor 23 is connected with the middle frame 3. The intermediate frame 3 is rotatably supported on the first rotation support portion 22, so that the intermediate frame 3 is driven by the first driving motor 23 to rotate. The inner pot 1 is arranged on the middle frame 3, so that the inner pot 1 rotates together with the middle frame 3.

The number of the first rotation support portions 22 is not particularly limited, and in this embodiment, as shown in fig. 4, there are two first rotation support portions 22, and two first rotation support portions 22 are symmetrically disposed on two sides of the intermediate frame 3. The first rotation supporting parts 22 symmetrically arranged at two sides of the middle frame 3 can more stably support the middle frame 3, so that the inner pot 1 can move stably. When the user uses, can avoid hot water to spatter outward, improve user experience. As an alternative embodiment, the first slewing support portion 22 is one.

As shown in fig. 1 and 3, the intermediate frame 3 includes: a first rotating shaft 32, one end of which points to the inner pot 1, and the other end of which extends to the first rotation support part 22, wherein the first rotation support part comprises a first rotation support groove, and the first rotating shaft 32 is rotatably supported in the first rotation support groove. The first rotary supporting groove can improve the base area of the first rotating shaft 32 and improve the rotating stability of the first rotating shaft 32.

In this embodiment, as shown in fig. 3, the intermediate frame 3 further includes: a stopper portion 31, the first rotation shaft 32 being provided on the stopper portion 31; the second rotation supporting part 33 is arranged on the limiting part 31, the inner pot 1 faces the limiting part 31 and extends out of the second rotating shaft 11, and the second rotating shaft 11 is rotatably supported in the second rotation supporting part 33. The second rotating shaft 11 is located on the limiting portion 31, so that when the middle frame 3 can drive the inner pot 1 to rotate around the first rotating shaft 32, the inner pot 1 can also rotate around the second rotating shaft 11 relative to the middle frame 3. This scheme has increased interior pot 1's rotation range, has improved interior pot 1's rotation range, has further improved the even degree that interior pot 1 itself is heated, has still aggravated the motion of 1 inside edible materials of interior pot to the even degree that edible materials are heated has been promoted.

As shown in fig. 3, the rotation center of the inner pot 1 is obtained by intersecting the extension lines of the first rotating shaft 32 and the second rotating shaft 11. When the extension lines of the first rotating shaft 32 and the second rotating shaft 11 intersect, the rotating amplitude of the inner pot 1 can be further improved, and the distance between the inner pot 1 and the heating assembly on the bracket 2 is unchanged in the rotating process.

The form of the heating component is not particularly limited, and in the present embodiment, as shown in fig. 2 and 4, the heating component is a heating plate 21, and the heating plate 21 is located on the support 2 and is disposed opposite to the bottom of the inner pan 1. In this embodiment, the inner pot 1 is spherical, and the surface of the heating plate 21 facing the bottom of the inner pot 1 is a concave surface 211. The heating plate 21 is internally provided with an electromagnetic coil structure, so that the inner pot 1 can be sufficiently heated under the condition that a certain gap is formed between the heating plate 21 and the inner pot. Meanwhile, the inner pot 1 is prevented from contacting with the heating plate 21 to block the movement of the inner pot 1.

The shape of the position-limiting portion 31 is not particularly limited, and in the present embodiment, as shown in fig. 1 and 3, the position-limiting portion 31 is annular, and the cross section of the position-limiting portion 31 is circular. The inner side of the limiting part 31 faces the inner pot 1, and the outer side of the limiting part 31 faces the first rotation supporting part 22. The annular limiting part 31 is matched with the spherical inner pot 1, so that the distance between the inner pot 1 and the limiting part 31 is basically unchanged in the rotating process, and the inner pot 1 is prevented from interfering with the limiting part 31 when rotating. As an alternative embodiment, the stopper portion 31 is polygonal or triangular.

As shown in fig. 3, the center of the limiting part 31 is located on the center of rotation of the inner pot 1. The interference caused by the change of the clearance between the inner pot 1 and the limiting part 31 in the rotating process is prevented.

In this embodiment, as shown in fig. 1 and 3, the intermediate frame 3 further includes: and the second driving motor 34 is arranged on the limiting part 31, and the output end of the second driving motor 34 is connected with the second rotating shaft 11. The second rotating shaft 11 is driven by the second driving motor 34 to rotate, so as to drive the inner pot 1 to rotate.

The structure of the inner pot 1 is not particularly limited, and in this embodiment, as shown in fig. 3 and 4, the inner pot 1 further includes: the vortex is protruding 12, locates on the inner wall of interior pot 1, vortex is protruding 12 to the inside of interior pot 1 is protruding. The turbulence protrusions 12 can increase the roughness of the inner wall of the inner pot 1, so that the ability of the inner pot 1 to drive food materials to flow is improved. In the rotating process of the inner pot 1, the liquid in the inner pot 1 can generate vortex. According to the boundary layer theory, the fluid will flow against the surface of the inner pot 1. When the surface of the inner pot 1 is provided with the bulges, the fluid can be peeled off at the highest part of the ribs and washed off in the vertical direction, and the fluid appears to the center of the inner pot 1 on the inner pot 1. And because of the space behind the ribs the fluid slows down, according to bernoulli's theorem, where the pressure increases, thus causing vortices to be generated there. Therefore, according to the two points, the surface of the inner pot 1 is additionally provided with the bulges, and when the inner pot 1 moves, the disturbance to the fluid is increased, so that more fluid is diffused to the center of the inner pot 1. As an alternative embodiment, the inner part of the inner pot 1 is provided with the turbulence protrusions 12, so that the inner part of the inner pot 1 presents a relatively smooth inner surface, and the purpose of the embodiment can also be achieved.

The arrangement position of the turbulence protrusion 12 is not particularly limited, and in this embodiment, as shown in fig. 4, the turbulence protrusion 12 is arranged on one side of the inner pot 1, which is far away from the pot cover 13. The turbulence protrusion 12 can be ensured to be contacted with the food material in the inner pot 1 to a greater extent. As an alternative embodiment, the turbulence protrusion 12 is located at the middle portion in the depth direction of the inner pot 1. As another alternative embodiment, the turbulence protrusions 12 are provided near the opening of the top of the inner pot 1.

The shape of the turbulence protrusion 12 is not particularly limited, and in this embodiment, as shown in fig. 4, the turbulence protrusion 12 is arc-shaped, and the turbulence protrusion 12 extends along the inner wall of the inner pot 1. The disturbance area of the disturbance projection 12 is increased. As an alternative embodiment, one end of the turbulence protrusion 12 is attached to the inner wall of the inner pot 1, and the other end extends along the inner wall of the inner pot 1 and gradually separates from the inner wall of the inner pot 1.

The number of the turbulence protrusions 12 is not particularly limited, and in this embodiment, as shown in fig. 3, there are three turbulence protrusions 12, and an included angle between adjacent turbulence protrusions 12 is 120 °. As alternative embodiments, the turbulating protrusion 12 may be one, two, or more than three.

In this embodiment, as shown in fig. 4, one end of the turbulence protrusion 12 is far away from the lid, and the height H of the other end is not lower than the height H of the heating element. Since the heating element performs a heating function, in the present embodiment, as shown in fig. 4, the heating element is a heating plate 21. The magnetic field generated by the heating plate 21 is distributed near the concave surface 211 of the depression of the heating plate 21. Therefore, the temperature of the part of the inner pot 1 close to the heating plate 21 is relatively high, and the burbling protrusion 12 can perform sufficient stirring aiming at the part close to the heating plate 21, so that the uniformity of the temperature distribution of food materials is improved. Because the inner pot 1 can rotate in the working process, when the value of H is larger than the value of H, the food material near the heating assembly can flow to a greater extent in the rotating process.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A rice cooker, comprising:

the inner pot (1) and the support (2), wherein the support (2) is provided with a heating component;

the middle frame (3), the inner pot (1) is arranged on the middle frame (3), and the middle frame (3) is movably connected to the bracket (2);

the driving mechanism is used for driving the inner pot (1) and/or the middle frame (3) to move relative to the support (2).

2. The rice cooker according to claim 1, characterized in that the bracket (2) comprises:

a first slewing support part (22), on which the intermediate frame (3) is slewing supported;

the output end of the first driving motor (23) is connected with the middle frame (3).

3. The rice cooker according to claim 2, wherein there are two first rotation supports (22), and the two first rotation supports (22) are symmetrically arranged on both sides of the middle frame (3).

4. The rice cooker according to claim 3, characterized in that the intermediate shelf (3) comprises:

first pivot (32), one end is directional interior pot (1), the other end to first gyration supporting part (2) extend, first gyration supporting part (2) include first gyration supporting groove, first pivot (32) gyration support in first gyration supporting inslot.

5. The rice cooker according to claim 4, characterized in that the intermediate shelf (3) further comprises:

the limiting part (31), the first rotating shaft (32) is arranged on the limiting part (31);

second slewing bearing portion (33), locate on spacing portion (31), interior pot (1) orientation spacing portion (31) stretch out by second pivot (11), second pivot (11) slewing bearing in second slewing bearing portion (33).

6. The rice cooker according to claim 5, characterized in that the intersection of the extension lines of the first rotating shaft (32) and the second rotating shaft (11) results in the center of rotation of the inner pot (1).

7. The rice cooker according to claim 6, wherein the stopper portion (31) is ring-shaped, an inner side of the stopper portion (31) is disposed toward the inner pot (1), and an outer side of the stopper portion (31) is disposed toward the first turn support portion (22).

8. The rice cooker according to claim 7, characterized in that the center of the circle of the limiting part (31) is located on the center of rotation of the inner pot (1).

9. The rice cooker according to any one of claims 5 to 8, characterized in that the intermediate frame (3) further comprises:

and the second driving motor (34) is arranged on the limiting part (31), and the output end of the second driving motor (34) is connected with the second rotating shaft (11).

10. The rice cooker according to any of the claims 1 to 8, characterized in that the inner pot (1) further comprises:

the vortex is protruding (12), locates on the inner wall of interior pot (1), vortex arch (12) to the inside of interior pot (1) is protruding.

11. The rice cooker according to claim 10, wherein the burbling protrusion (12) is provided on a side of the inner part of the inner pot (1) remote from the pot cover (13).

12. The rice cooker according to claim 10, wherein the flow disturbing protrusion (12) is arc-shaped, and the flow disturbing protrusion (12) extends along the inner wall of the inner pan (1).

13. The rice cooker as claimed in claim 10, wherein there are three turbulence protrusions (12), and the angle between adjacent turbulence protrusions (12) is 120 °.

14. The rice cooker as claimed in claim 10, wherein the burbling protrusion (12) is provided with one end away from the lid (13) and the other end extending a height H not less than the height H of the heating assembly.