WO2019007080A1

WO2019007080A1 - Inner pot, electric rice cooker and electric pressure cooker

Info

Publication number: WO2019007080A1
Application number: PCT/CN2018/076629
Authority: WO
Inventors: Zeyong LI; Qingshan QIU
Original assignee: Zhejiang Supor Electrical Appliances Manufacture Co., Ltd.
Priority date: 2017-07-07
Filing date: 2018-02-13
Publication date: 2019-01-10
Also published as: UA144708U; SG11201912762XA; JP3226919U; EP3648641A4; EP3648641A1

Abstract

An inner pot (130), an electric rice cooker (100) and an electric pressure cooker. The inner pot (130) is a rotary body which is formed by rotating a pot wall (132) about its central axis and has an upper opening (131). The dimension of the inner pot (130) satisfies the following condition: 2<D/H≤3, where D is the inner diameter of the upper opening (131), and H is the height of an inner chamber of the inner pot (130), and/or an upper portion of the pot wall being a straight wall (133) while a lower portion of the pot wall (132) being an arc-shaped wall (134), the arc-shaped wall (134) being connected to the straight wall (133), the dimension of the inner pot (130) satisfies the following condition: 1/3<H1/H<0.65, where H is the height of an inner chamber of the inner pot (130), and H1 is the height of the straight wall (133).

Description

INNER POT, ELECTRIC RICE COOKER AND ELECTRIC PRESSURE COOKER

TECHNICAL FIELD

The present invention relates to the technical field of cooking utensils, and in particular to an inner pot, an electric rice cooker and an electric pressure cooker.

BACKGROUND

Existing inner pots are basically designed to allow water to circulate in the pan after boiling by arranging the shape of the inner pots and heating zones, so as to achieve the effect of a uniform temperature. However, such inner pots often result in an uneven water temperature due to there being no boiling bubbles to cause water rolling convection before the water boils, that is, in the water absorption stage of cooking. Generally, the water absorption effect of the rice is largely related to the temperature, uneven temperature will result in an uneven water absorption effect. As a result, the uneven water absorption effect will result in unevenly cooked rice.

Also, at present, inner pots of cooking utensils commonly used in ordinary families generally have a small heating area due to their limited shape, and are likely to result in uneven water temperature. However, generally, the water absorption effect of the rice is largely related to the temperature, the uneven temperature will result in an uneven water absorption effect. As a result, the uneven water absorption effect will result in unevenly cooked rice. It is desirable that the present application provides an improved inner pot, an electric rice cooker and an electric pressure cooker in order to at least partially solve the above problems.

Therefore, there is a need to provide an inner pot, an electric rice cooker and an electric pressure cooker in order to at least partially solve the above problems.

SUMMARY

A series of simplified concepts are introduced in the summary of the present invention and will be further described in detail in specific embodiments. The summary of the present invention is not intended to define key features and essential technical features of technical solutions sought to be protected, and also not intended to define the protection scope of the technical solutions sought to be protected.

To at least partially solve the above problems, on one hand, the present invention discloses an inner pot, the inner pot being a rotary body which is formed by rotating a pot wall about its central axis and has an upper opening; wherein the dimension of the inner pot satisfies the following condition: 2<D/H≤3, where D is the inner diameter of the upper opening, and H is the height of an inner chamber of the inner pot.

In the inner pot of the invention, by setting the ratio of the inner diameter of the upper opening to the height of the inner chamber of the inner pot to be within the above range, the upper opening of the inner pot may become wider, and the height of the inner pot may be relatively small, so that the thickness of food material in the inner pot can be effectively reduced, and the heating area of the inner pot can be effectively increased. Consequently, the food material can be heated evenly, particularly when liquid in the inner pot has not boiled.

Preferably, the pot wall includes a turnup edge which is located at the upper opening and extending outward.

Preferably, the turnup edge includes a turnup portion formed by bending the pot wall outward and a thickening ring provided on a lower side of the turnup portion.

Preferably, the turnup edge includes a first annular member surrounding the upper opening.

Preferably, the turnup edge is composed of a second annular member connected onto the upper opening.

Preferably, the total thickness T1 of the turnup edge satisfies the following condition: T1≥4 mm.

Preferably, the turnup edge has a bulging portion relative to the pot wall, and the thickness T2 of the bulging portion satisfies the following condition: T2≥2 mm.

Preferably, the bottom of the inner pot includes a planar base, and the diameter D1 of the planar base satisfies the following condition: 10 mm≤D1≤0.5D.

Preferably, when the capacity Q of the inner pot satisfies the condition of Q≤4 L, the dimension of the inner pot satisfies the following condition: 2.1<D/H<2.8.

Preferably, when the capacity Q of the inner pot satisfies the condition of 4L<Q≤6L, the inner diameter D of the upper opening satisfies the following condition: 240 mm≤D≤280 mm.

The present invention also discloses an inner pot, the inner pot being a rotary body which is formed by rotating a pot wall about its central axis and has an upper opening; an upper portion of the pot wall being a straight wall while a lower portion of the pot wall being an arc-shaped wall; and, the arc-shaped wall being connected to the straight wall, wherein the dimension of the inner pot satisfies the following condition: 1/3<H1/H<0.65, where H is the height of an inner chamber of the inner pot, and H1 is the height of the straight wall.

In the inner pot of the present invention, by limiting the height of the straight wall within the above range, the heating area of the inner pot can be increased, and the heating efficiency can thus be improved. In addition, by designing the lower portion of the pot wall as an arc-shaped wall, food can be heated more evenly during cooking, and the water absorption is more even.

Preferably, the dimension of the inner pot satisfies the following condition: 2<D/H≤3, where D is the inner diameter of the upper opening, and H is the height of the inner chamber of the inner pot.

Preferably, the height H1 of the straight wall satisfies the following condition: 0.45<H1/H<0.55.

Preferably, the straight wall is parallel to or forms a certain angle α with the central axis of the inner pot.

Preferably, the value range of the angle α is 0°≤α≤30°.

Preferably, the value range of the angle α is 0°≤α≤15°.

Preferably, the bottom of the inner pot includes a planar base, and the diameter D1 of the planar base satisfies the following condition: 10 mm≤D1≤0.5D, where D is the inner diameter of the upper opening.

According to another aspect of the present invention, there is provided an electric rice cooker, including: a cooker body within which an inner pot is provided, the inner pot being a rotary body which is formed by rotating a pot wall about its central axis and has an upper opening, wherein the dimension of the inner pot satisfies the following condition: 2<D/H≤3, where D is the inner diameter of the upper opening, and H is the height of an inner chamber of the inner pot; and, a cover body, the cover body being pivotally connected above the cooker body, and configured for forming a cooking space between the cover body and the inner pot.

In the electric rice cooker of the invention, by setting the ratio of the inner diameter of the upper opening of the inner pot to the height of the inner chamber of the inner pot to be within the above range, the upper opening of the inner pot may become wider, and the height of the inner pot may be relatively small, so that the thickness of food material in the inner pot can be effectively reduced, and the heating area of the inner pot can be effectively increased. Consequently, the food material can be heated evenly, particularly when liquid in the inner pot has not boiled.

The present invention also discloses an electric rice cooker, including: a cooker body within which an inner pot and a temperature measurement device are provided, the inner pot being a rotary body which is formed by rotating a pot wall about its central axis and has an upper opening, an upper portion of the pot wall being a straight wall while a lower portion of the pot wall being an arc-shaped wall, the arc-shaped wall being connected to the straight wall, wherein the dimension of the inner pot satisfies the following condition: 1/3<H1/H<0.65, where H is the height of an inner chamber of the inner pot, and H1 is the height of the straight wall; and, a cover body, the cover body being provided above the cooker body in an openable and closable manner, and being configured to form a cooking space between the cover body and the inner pot.

In the electric rice cooker of the present invention, by limiting the height of the straight wall within the aboverange, the heating area of the inner pot can be increased, and the heating efficiency can thus be improved. In addition, by designing the lower portion of the pot wall as an arc-shaped wall, food can be heated more evenly during cooking, and the water absorption is more even.

Preferably, the dimension of the inner pot satisfies the following condition: 2<D/H≤3, where D is the inner diameter of the upper opening.

Preferably, a transition fillet portion is provided at a junction of the arc-shaped wall and the straight wall, and the radius R of an inner surface of the transition fillet portion satisfies the following condition: R≤15 mm.

Preferably, the value range of the angle α is 0°≤α≤30°.

Preferably, the value range of the angle α is 0°≤α≤15°.

Preferably, the thickness of the pot wall is T3, and the height H2 of the turnup edge satisfies the following condition: T3≤H2≤H1.

The present invention further discloses an electric pressure cooker, including: a cooker body within which an inner pot is provided, the inner pot being a rotary body which is formed by rotating a pot wall about its central axis and has an upper opening, wherein the dimension of the inner pot satisfies the following condition: 2<D/H≤3, where D is the inner diameter of the upper opening, and H is the height of an inner chamber of the inner pot, and a cooker body buckling structure is provided on the cooker body; and, a cover body on which a cover body buckling mechanism is provided, wherein, by buckling the cover body buckling mechanism with the cooker body buckling structure, the cover body is pivotally connected above the cooker body; and when the cover body covers on the cooker body, a cooking space is formed between the cover body and the inner pot.

In the electric pressure cooker of the invention, by setting the ratio of the inner diameter of the upper opening of the inner pot to the height of the inner chamber of the inner pot to be within the above range, the upper opening of the inner pot may become wider, and the height of the inner pot may be relatively small, so that the thickness of food material in the inner pot can be effectively reduced, and the heating area of the inner pot can be effectively increased. Consequently, the food material can be heated evenly, particularly when liquid in the inner pot has not boiled.

Preferably, an upper portion of the pot wall is a straight wall, while a lower portion of the pot wall is an arc-shaped wall, the arc-shaped wall being connected to the straight wall; and a transition fillet portion is provided at a junction of the arc-shaped wall and the straight wall, and the radius R of an inner surface of the transition fillet portion satisfies the following condition: R≤15 mm.

Preferably, the height H1 of the straight wall satisfies the following condition: 1/3<H1/H<0.65.

Preferably, the value range of the angle α is 0°≤α≤30°.

Preferably, the value range of the angle α is 0°≤α≤15°.

Preferably, the thickness of the pot wall is T3, the height of the straight wall is H1, and the height H2 of the turnup edge satisfies the following condition: T3≤H2≤H1.

The present invention also discloses an electric pressure cooker, including: a cooker body within which an inner pot and a temperature measurement device are provided, the inner pot being a rotary body which is formed by rotating a pot wall about its central axis and has an upper opening, an upper portion of the pot wall being a straight wall while a lower portion of the pot wall being an arc-shaped wall, the arc-shaped wall being connected to the straight wall, wherein the dimension of the inner pot satisfies the following condition: 1/3<H1/H<0.65, where H is the height of an inner chamber of the inner pot, H1 is the height of the straight wall, and a cooker body buckling structure being provided on the cooker body; and, a cover body on which a cover body buckling mechanism is provided, wherein, by buckling the cover body buckling mechanism with the cooker body buckling structure, the cover body is provided above the cooker body in an openable and closable manner; and when the cover body covers on the cooker body, a cooking space is formed between the cover body and the inner pot.

In the electric pressure cooker of the present invention, by limiting the height of the straight wall within the above range, the heating area of the inner pot can be increased, and the heating efficiency can thus be improved. In addition, by designing the lower portion of the pot wall as an arc-shaped wall, food can be heated more evenly during cooking, and the water absorption is more even.

Preferably, the value range of the angle α is 0°≤α≤30°.

Preferably, the value range of the angle α is 0°≤α≤15°.

BRIEF DESCRIPTION OF THE DRAWINGS

The following drawingswhich constitute a part of the present invention are included to provide an understanding of the embodiments of the present invention. The embodiments of the present invention shown in the drawings and the descriptions thereof are used for explaining the principle of the present invention. In the drawings:

Fig. 1 is a sectional diagram of an inner pot according to a preferred embodiment of the present invention;

Fig. 2 is a sectional diagram of the inner pot according to another preferred embodiment of the present invention;

Fig. 3 is a sectional diagram of the inner pot according to yet another preferred embodiment of the present invention;

Fig. 4 is a top view of the inner pot according to a preferred embodiment of the present invention;

Fig. 5 is another sectional diagram of the inner pot of Fig. 1;

Fig. 6 is a partially enlarged view of a preferred embodiment of part A in Fig. 5;

Fig. 7 is a partially enlarged view of another preferred embodiment of part A in Fig. 5;

Fig. 8 is a partially enlarged view of yet another preferred embodiment of part A in Fig. 5; and

Fig. 9 is a perspectiveview of an electric rice cooker according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

Hereinafter, numerous specific details are provided for more completely understanding the present invention. However, it is apparent for those skilled in the art that the embodiments of the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the present invention, some technical features well-known in the art will be omitted.

In order to completely understand the embodiments of the present invention, detailed structures will be provided in the following description. Apparently, the embodiments of the embodiments of the present invention are not limited to the special details known for those skilled in the art. The preferred embodiments of the present invention will be described below in detail; however, in addition to these detailed descriptions, the present invention can also have other embodiments.

The inner pot according to the preferred embodiments of the present invention will be described hereinafter in detail.

As shown in Fig. 1, the inner pot 130 of the present invention includes a pot wall 132 which maybe made of metal material. The inner pot 130 is a rotary body formed by rotating the pot wall 132 about its central axis. The pot wall 132 has a circular upper opening 131. The capacity Q of the inner pot 130 is generally below 6 L.For example, the capacity of the inner pot 130 may be 5 L, 4 L or the like. The dimension of the inner pot 130 satisfies the following condition:

2<D/H≤3,

where D is the inner diameter of the upper opening 131 of the inner wall 132, and H is the height of an inner chamber of the inner pot 130. For example, in an embodiment, D/H may be equal to 2.5 or 3. With this solution, by setting the ratio of the inner diameter D of the upper opening 131 to the height H of the inner chamber of the inner pot 130 to be within this range, the upper opening 131 of the inner pot 130 may become wider, and the height of the inner pot 130 may be relatively small, so that the thickness of food material in the inner pot 130 can be effectively reduced and the heating area of the inner pot 130 can be effectively increased. Consequently, the food material can be heated evenly, particularly when liquid in the inner pot is not boiled.

Continuously referring to Fig. 1, in a longitudinal section (i.e., the section shown in Fig. 1) passing through the central axis of the inner pot 130, the upper portion of the pot wall 132 is a straight wall 133 which is parallel to the central axis of the inner pot, while the lower portion of the pot wall 132 is an arc-shaped wall 134. In other words, the upper portion of the pot wall 132 is approximately cylindrical, and the lower portion of the pot wall 132 is approximately hemispherical. The upper opening 131 is located on the top of the straight wall 133, and the arc-shaped wall 134 is connected below the straight wall 133. The maximum inner diameter of the cross section of the arc-shaped wall 134 is equal to the inner diameter of the cross section of the straight wall 133, and which maximum inner diameters are both equal to the inner diameter D of the upper opening 131.

Further, continuously referring to Fig. 1, a transition fillet portion 138 is provided at a junction of the arc-shaped wall 134 and the straight wall 133, and the radius R of an inner surface of the transition fillet portion 138 satisfies the following condition: R≤15 mm. For example, the radius R of the transition fillet portion may be 12 mm, 13 mm or the like. With the solution, the machining is convenient and the cost is low, so that the productization can be truly realized.

In another embodiment, as shown in Fig. 2, the straight wall 133 may not be parallel to the central axis of the inner pot 130, butforma certain angle α with the central axis of the inner pot 130. Preferably, the value range of the angle α is 0°≤α≤30°. Further, preferably, the value range of the angle α is 0°≤α≤15°.

In yet another embodiment, as shown in Fig. 3, in a longitudinal section (i.e., the section shown in Fig. 3) passing through the central axis of the inner pot 130, the whole pot wall 132 is an arc-shaped wall and does not include the straight wall mentioned in the above embodiment. With thistechnical solution, manufacture of the inner pot may be facilitated, and the heating effect of the inner pot can be better.

Referring backto Fig. 1, the height H1 of the straight wall 133 of the pot wall 132 satisfies the following condition: 1/3<H1/H<0.65. For example, H1/H may be equal to 0.4, 0.45 or the like. With this solution, the height of the arc-shaped wall 134 can be increased properly, so that the heating area of the inner pot 130 can be increased and the food material can be heated evenly.

As a preferred solution, the capacity Q of the inner pot 130 satisfies the following condition: Q≤4 L, and the dimension of the inner pot 130 satisfies the following condition: 2.1<D/H<2.8. For example, D/H may be equal to 2.5, 2.6 or the like. Thus, the thickness of food material in the inner pot 130 can be effectively reduced, and the heating area of the inner pot 130 can be effectively increased, so that the food material can be heated evenly. Further, preferably, the height H1 of the straight wall 133 satisfies the following condition: 0.45<H1/H<0.55. For example, H1/H may be equal to 0.5.

As another preferred solution, the capacity Q of the inner pot satisfies the following condition: 4 L<Q≤6 L, and the inner diameter D of the upper opening 131 satisfies the following condition: 240 mm≤D≤280 mm. For example, D may be equal to 260 mm, 270 mm or the like.

In order toensurethe stability of the inner pot and prevent the inner pot from toppling, as shown in Figs. 1-4, preferably, there is a circular planar base 135 on the bottom of the inner pot 130, and the planar base 135 is provided at the bottom of the arc-shaped wall 134. Further, preferably, the diameter D1 of the planar base 135 satisfies the following condition: 10mm≤D1≤0.5D. With this solution, the stability of the inner pot 130 can be further maintained.

Referring to Fig. 5, the pot wall 132 includes a turnup edge 136 which is located at the upper opening 131 and extending outward. Preferably, the turnup edge 136 is continuously arranged in a circumferential direction. With this solution, it is convenient for manufacturing, and the strength of the turnup edge 136 can be increased. Additionally, it can also be convenient for a user to take up the inner pot 130 by holding this turnup edge 136.

Preferably, the total thickness T1 of the turnup edge 136 satisfies the following condition: T1≥4 mm. For example, the total thickness T1 of the turnup edge 136 may be equal to 5 mm, 6 mm or the like. Withthis solution, the contact area of a cover body with the turnup edge 136 when the cover body of a cooking utensil, such as an electric rice cooker or an electric pressure cooker, covers on a cooker body can be increased, so that the airtightness of the cooking utensil is improved.

Continuously referring to Fig. 5, the turnup edge 136 has a bulging portion 137 radially extending outward relative to the pot wall 132. Preferably, the thickness T2 of the bulging portion 137 satisfies the following condition: T2≥2 mm. For example, the thickness T2 of the bulging portion 137 may be equal to 3 mm, 3.5 mm or the like. With this solution, the stability of the inner pot 130 when placed into a cooker body can be improved.

Preferably, the height H2 (as shown in Fig. 1) of the turnup edge 136 satisfies the following condition: the thickness T3 of the pot wall 132 satisfies the condition T3≤H2≤H1. With this solution, the strength of the turnup edge 136 can be increased.

The turnup edge may be of other structures besides the structure shown in Fig. 5, and these structures will be briefly described below.

In a preferred embodiment, as shown in Fig. 6, the turnup edge 236 includes a turnup portion 233 formed by bending the pot wall 232 outward, and a thickening ring 234 provided on a lower side of the turnup portion 233. The thickening ring 234 may be connected to the lower side of the turnup portion 233 by welding, casting or other methods.

In another preferred embodiment, as shown in Fig. 7, the turnup edge 336 includes a first annular member 337 which is provided at the upper opening and surrounds the pot wall 332 from the outer side of the pot wall 332. The first annular member 337 may be welded onto the pot wall 332.

In still another preferred embodiment, as shown in Fig. 8, the turnup edge 436 is composed of a second annular member 437 which is connected to the pot wall 432 at the top of the upper opening. The second annular member 437 may be welded onto the pot wall 432.

As shown in Fig. 9, the present invention further discloses an electric rice cooker. The electric rice cooker 100 includes a cover body 110, a cooker body 120 and an inner pot 130 as described above. The cooker body 120 is substantially of a rounded-corner cuboid or cylindrical shape, a cylindrical heat insulation enclosure being provided on an inner side of the cooker body 120. The inner pot 130 can be freely placed into or taken out from the heat insulation enclosure, so that the inner pot 130is convenient to clean. The cooker body 120 includes a heating device for heating the inner pot 130. The heating device may be provided on the bottom of the inner pot 130. The heating device may be, for example, an electric heating plate, an electromagnetic induction heater or the like. In other embodiments, the heating device may also be provided on a lateral side of the inner pot 130. A temperature measurement device for sensing the temperature of the inner pot 130 is further provided in the cooker body 120.

The cover body 110 is substantially of a rounded-corner cuboid shape, and substantially corresponds to the shape of the cooker body 120. The cover body 110 is pivotally connected to the cooker body 120 in an openable and closable manner, so as to cover the cooker body 120. When the cover body 110 covers on the cooker body 120, a cooking space is formed between the cover body 110 and the inner pot 130.

The present invention further discloses an electric pressure cooker. The structure of the electric pressure cooker is similar tothat of the electric rice cooker described above. The electric pressure cooker also includes a cooker body, a cover body and an inner pot 130 as described above. A cooker body buckling structure is generally provided on the cooker body of the electric pressure cooker, and a cover body buckling mechanism matched with the cooker body buckling structure is provided on the cover body. By buckling the cover body buckling mechanism with the cooker body buckling structure, the cover body can cover on the cooker body in an openable and closable manner. When the cover body covers on the cooker body, an airtight cooking space is formed between the cover body and the inner pot.

Since other structures of the electric rice cooker and the electric pressure cooker are known in the art, for simplicity, these structures will not be described in detail herein.

Unless otherwise defined, the technical and scientific terms used herein have meanings the same as the common meanings interpreted by those skilled in the art. The terms used herein are merely for describing the specific embodiment objectives rather than limiting the present invention. Terms such as “component” used herein may represent a simple part, or may represent a combination of multiple parts. Terms such as “mount” or “arrange” used herein may represent direction attachment of a component to another component, or may represent attachment of a component to another component through an intermediate component. The features described in one embodiment can be applied in another embodiment individually or in combination with other features, unless this feature is not applicable to said another embodiment or unless otherwise specified.

Although the present invention has been described by the above embodiments, it should be understood that theembodiments are merely for illustration and description and not intended to limit the present invention within the scope of the described embodiments. Those skilled in the art can understand that, various transformations and modifications can be made in accordance with the teaching of the present invention, and those transformations and modifications shall fall into the protection scope of the present invention.

Claims

An inner pot, the inner pot being a rotary body which is formed by rotating a pot wall about its central axis and has an upper opening, wherein

a) the dimension of the inner pot satisfies the following condition:

2<D/H≤3,

where D is the inner diameter of the upper opening, and H is the height of an inner chamber of the inner pot, and/or

b) an upper portion of the pot wall being a straight wall while a lower portion of the pot wall being an arc-shaped wall, the arc-shaped wall being connected to the straight wall, the dimension of the inner pot satisfies the following condition:

1/3<H1/H<0.65,

where H is the height of an inner chamber of the inner pot, and H1 is the height of the straight wall.
The inner pot according to claim 1, the pot wall comprising a turnup edge which is located at the upper opening and extending outward.
The inner pot according to claim 2, the turnup edge comprising a turnup portion formed by bending the pot wall outward, and a thickening ring provided on a lower side of the turnup portion.
The inner pot according to claim 2, the turnup edge comprising a first annular member surrounding the upper opening.
The inner pot according to claim 2, the turnup edge being composed of a second annular member connected onto the upper opening.
The inner pot according to any one of claims 2 to 5, the total thickness T1 of the turnup edge satisfying the following condition: T1≥4 mm.
The inner pot according to any one of claims 2 to 5, the turnup edge having a bulging portion relative to the pot wall, and the thickness T2 of the bulging portion satisfying the following condition: T2≥2 mm.
The inner pot according to claim 1, the bottom of the inner pot comprising a planar base, and the diameter D1 of the planar base satisfying the following condition: 10 mm≤D1≤0.5D, where D is the inner diameter of the upper opening.
The inner pot according to claim 1, when the capacity Q of the inner pot satisfies the condition of Q≤4 L, the dimension of the inner pot satisfying the following condition: 2.1<D/H<2.8.
The inner pot according to claim 1, the height H1 of the straight wall satisfying the following condition: 0.45<H1/H<0.55.
The inner pot according to claim 1, the straight wall being parallel to or forminga certain angle α with the central axis of the inner pot.
The inner pot according to claim 11, the value range of the angle α being 0°≤α≤30°.
The inner pot according to claim 12, the value range of the angle α being 0°≤α≤15°
The inner pot according to claim 1, when the capacity Q of the inner pot satisfies the condition of 4 L<Q≤6 L, the inner diameter D of the upper opening satisfyingthe following condition: 240 mm≤D≤280 mm.
An electric rice cooker, comprising:

- a cooker body within which an inner pot and optionally a temperature measurement device areprovided, the inner pot being a rotary body which is formed by rotating a pot wall about its central axis and has an upper opening, wherein

a) the dimension of the inner pot satisfies the following condition:

2<D/H≤3,

where D is the inner diameter of the upper opening, and H is the height of an inner chamber of the inner pot; and/or

b) an upper portion of the pot wall being a straight wall while a lower portion of the pot wall being an arc-shaped wall, the arc-shaped wall being connected to the straight wall, wherein the dimension of the inner pot satisfies the following condition:

1/3<H1/H<0.65,

where H is the height of an inner chamber of the inner pot, and H1 is the height of the straight wall,

and

- a cover body pivotally connected above the cooker body or provided above the cooker body in an openable and closable manner, and being configured to form a cooking space between the cover body and the inner pot.
The electric rice cooker according to claim 15, a transition fillet portion being provided at a junction of the arc-shaped wall and the straight wall, and the radius R of an inner surface of the transition fillet portion satisfying the following condition: R≤15 mm.
The electric rice cooker according to claim 15, when the capacity Q of the inner pot satisfies the condition of Q≤4 L, the dimension of the inner pot satisfying the following condition: 2.1<D/H<2.8.
The electric rice cooker according to claim 17, the height H1 of the straight wall satisfying the following condition: 0.45<H1/H<0.55.
The electric rice cooker according to claim 15, the straight wall being parallel to or forminga certain angle α with the central axis of the inner pot.
The electric rice cooker according to claim 19, the value range of the angle αbeing 0°≤α≤30°.
The electric rice cooker according to claim 20, the value range of the angle αbeing 0°≤α≤15°.
The electric rice cooker according to claim 15, the pot wall comprising a turnup edge which is located at the upper opening and extending outward.
The electric rice cooker according to claim 22, the turnup edge comprising a turnup portion formed by bending the pot wall outward, and a thickening ring provided on a lower side of the turnup portion.
The electric rice cooker according to claim 22, the turnup edge comprising a first annular member surrounding the upper opening.
The electric rice cooker according to claim 22, the turnup edge beingcomposed of a second annular member connected onto the upper opening.
The electric rice cooker according to any one of claims 22 to 25, the total thickness T1 of the turnup edge satisfyingthe following condition: T1≥4 mm.
The electric rice cooker according to any one of claims 22 to 25, the turnup edge having a bulging portion relative to the pot wall, and the thickness T2 of the bulging portion satisfies the following condition: T2≥2 mm.
The electric rice cooker according to any one of claims 22 to 25, wherein the thickness of the pot wall is T3, the height of the straight wall is H1, and the height H2 of the turnup edge satisfies the following condition: T3≤H2≤H1.
The electric rice cooker according to claim 15, the bottom of the inner pot comprising a planar base, and the diameter D1 of the planar base satisfying the following condition: 10 mm≤D1≤0.5D, where D is the inner diameter of the upper opening.
The electric rice cooker according to claim 15, when the capacity Q of the inner pot satisfies the condition of 4 L<Q≤6 L, the inner diameter D of the upper opening satisfyingthe following condition: 240 mm≤D≤280 mm.
An electric pressure cooker, comprising:

- a cooker body within which an inner pot and optionally a temperature measurement device are provided, the inner pot being a rotary body which is formed by rotating a pot wall about its central axis and has an upper opening, wherein

a) the dimension of the inner pot satisfies the following condition:

2<D/H≤3,

where D is the inner diameter of the upper opening, and H is the height of an inner chamber of the inner pot; and a cooker body buckling structure being provided on the cooker body, and/or

b) an upper portion of the pot wall being a straight wall while a lower portion of the pot wall being an arc-shaped wall, the arc-shaped wall being connected to the straight wall, wherein the dimension of the inner pot satisfies the following condition:

1/3<H1/H<0.65,

where H is the height of an inner chamber of the inner pot, H1 is the height of the straight wall, and a cooker body buckling structure being provided on the cooker body; and

- a cover body on which a cover body buckling mechanism is provided, wherein, by buckling the cover body buckling mechanism with the cooker body buckling structure, the cover body is pivotally connected above the cooker body or provided above the cooker body in an openable and closable manner; and when the cover body covers on the cooker body, a cooking space is formed between the cover body and the inner pot.
The electric pressure cooker according to claim 31, a transition fillet portion being provided at a junction of the arc-shaped wall and the straight wall, and the radius R of an inner surface of the transition fillet portion satisfying the following condition: R≤15 mm.
The electric pressure cooker according to claim 31, when the capacity Q of the inner pot satisfies the condition of Q≤4 L, the dimension of the inner pot satisfying the following condition: 2.1<D/H<2.8.
The electric pressure cooker according to claim 33, the height H1 of the straight wall satisfying the following condition: 0.45<H1/H<0.55.
The electric pressure cooker according to claim 31, the straight wall being parallel to or forming a certain angle α with the central axis of the inner pot.
The electric pressure cooker according to claim 35, the value range of the angle α being 0°≤α≤30°.
The electric pressure cooker according to claim 36, the value range of the angle α being 0°≤α≤15°.
The electric pressure cooker according to claim 31, the pot wall comprising a turnup edge which is located at the upper opening and extending outward.
The electric pressure cooker according to claim 38, the turnup edge comprising a turnup portion formed by bending the pot wall outward and, a thickening ring being provided on a lower side of the turnup portion.
The electric pressure cooker according to claim 38, the turnup edge comprising a first annular member surrounding the upper opening.
The electric pressure cooker according to claim 38, the turnup edge beingcomposed of a second annular member connected onto the upper opening.
The electric pressure cooker according to any one of claims 38 to 41, the total thickness T1 of the turnup edge satisfyingthe following condition: T1≥4 mm.
The electric pressure cooker according to any one of claims 38 to 41, the turnup edge having a bulging portion relative to the pot wall, and the thickness T2 of the bulging portion satisfyingthe following condition: T2≥2 mm.
The electric pressure cooker according to any one of claims 38 to 41, the thickness of the pot wall being T3, the height of the straight wall beingH1, and the height H2 of the turnup edge satisfyingthe following condition: T3≤H2≤H1.
The electric pressure cooker according to claim 31, the bottom of the inner pot comprising a planar base, and the diameter D1 of the planar base satisfying the following condition: 10 mm≤D1≤0.5D, where D is the inner diameter of the upper opening.
The electric pressure cooker according to claim 31, when the capacity Q of the inner pot satisfies the condition of 4 L<Q≤6 L, the inner diameter D of the upper opening satisfyingthe following condition: 240 mm≤D≤280 mm.