CN214510808U - Sealing ring and cooking utensil with same - Google Patents

Abstract

The utility model relates to the technical field of household appliances, concretely relates to sealing washer and have its cooking utensil. The utility model discloses aim at solving the poor technical problem of sealing stability of current sealing washer. The utility model provides a sealing ring, sealing washer include this somatic part, are connected with roughly towards the radial body lip limit of extension of sealing washer on this somatic part, still are connected with roughly towards the first seal limit and the second seal limit of the axial extension of sealing washer on this somatic part, and first seal limit and second seal limit are at the interval setting in footpath. The utility model provides a sealing washer has two towards sealing washer axial extension's first sealed limits and second sealed limits, can form double seal to the face that needs are sealed when the sealing washer cooperates with the part that needs are sealed, and is sealed effectual. If when the sealing washer setting on cooking utensil's lid, first sealed limit and second sealed limit homoenergetic form double seal with the inside wall cooperation of cooking pot, effectively seal up the clearance between lid and the cooking pot.

Description

Sealing ring and cooking utensil with same

Technical Field

The utility model relates to the technical field of household appliances, concretely relates to sealing washer and have its cooking utensil.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

The sealing washer of cooking utensil product generally adopts unilateral sealed with the edge of interior pot at present, and the sealing washer is after using a period, and ageing size that leads to the sealing washer that appears easily diminishes, leads to cooking utensil to appear sealed phenomenon of becoming invalid.

In addition, the sealing ring which is individually sealed at two sides is generally designed with two sealing edges which are matched with the inner wall and the upper surface of the opening of the cooking utensil, and the sealing edge which is matched with the inner side wall of the cooking utensil mainly plays a role in sealing, namely, the sealing effect of the sealing edge which is matched with the upper surface of the opening is not obvious.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

In order to achieve the above object, a first aspect of the present invention provides a seal ring, which includes a body portion, the body portion is connected to a radially extending body lip edge of the seal ring, the body portion is further connected to a first sealing edge and a second sealing edge, the first sealing edge and the second sealing edge are radially spaced from each other.

The utility model provides a sealing washer has two towards sealing washer axial extension's first sealed limits and second sealed limits, can form double seal to the face that needs are sealed when the sealing washer cooperates with the part that needs are sealed, and is sealed effectual. If when the sealing washer setting when cooking utensil's lid on, when the lid was established on cooking utensil's cooking pot, first sealed limit and second sealed limit homoenergetic formed double seal with the inside wall cooperation of cooking pot, effectively sealed lid and the clearance between the cooking pot, sealed effect is good.

In addition, according to the utility model discloses above-mentioned sealing washer can also have following additional technical characterstic:

according to the utility model discloses an embodiment, first sealed limit and second sealed limit all form the annular, and first sealed limit encircles the periphery at the second sealed limit.

According to the utility model discloses an embodiment, in the axial of sealing washer, the length of first sealing limit is less than the length of second sealing limit.

According to the utility model discloses an embodiment, the body lip limit extends towards the direction slope of keeping away from first sealing edge when radially extending of sealing washer, forms obtuse angle structure between body lip limit and the first sealing edge.

According to the utility model discloses an embodiment, the sealing washer still includes the joint portion of being connected with this somatic part, and joint portion extends towards the opposite direction with the second sealed limit.

According to the utility model discloses an embodiment, the periphery of sealing washer is provided with along the step arch of axial distribution, and the bellied lateral wall outside-in of step is formed with the first sealing and the second sealing of different radial dimension, and first sealing is formed at the side of first sealing, and the second sealing is formed at the side of second sealing.

The second aspect of the present invention also provides a cooking appliance, including a sealing ring according to the first aspect of the present invention.

According to the utility model discloses an embodiment, cooking utensil still includes the lid that culinary art pot and lid established to the opening part of culinary art pot, and the culinary art pot still includes: the step sealing part is arranged at the periphery of the opening, and a first step surface and a second step surface which face the inside of the cooking pot and have different radial sizes are formed on the side wall of the step sealing part from outside to inside; the sealing ring is arranged on the cover body and is positioned at a position corresponding to the step sealing part, the first sealing edge is matched with the first step surface, and the second sealing edge is matched with the second step surface.

According to the utility model discloses an embodiment, be formed with the transition face between first step face and the second step face, still be provided with on the sealing washer with transition face complex third sealing edge.

According to the utility model discloses an embodiment, step seal portion forms the flanging at open-ended border, and the body lip limit of sealing washer is set up on the flanging.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a sectional view of a cooking appliance according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of a portion A of the cooking appliance shown in FIG. 1;

fig. 3 is a cross-sectional view of a seal ring according to a first embodiment of the present invention;

fig. 4 is a sectional view of a seal ring according to a second embodiment of the present invention.

Wherein the reference numbers are as follows:

100. a cooking appliance;

10. a cooking pan; 11. a first step surface; 12. a second step surface; 13. flanging; 14. a transition surface;

20. a cover body;

30. a seal ring; 31. a first sealing edge; 32. a second sealing edge; 321. reinforcing ribs; 33. a body lip; 34. a clamping part; 35. step bulges; 351. a first seal portion; 352. a second seal portion; 36. a third sealing edge;

C. a cooking cavity.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, although the present invention describes the specific structure and technical effect of the sealing structure of the cooking utensil through the electric cooker, the electric cooker is only the preferred embodiment of the cooking utensil, not right the utility model discloses the protection range's of the cooking utensil restriction, for example, the utility model discloses a cooking utensil can also be for steam cooking equipment, microwave oven or pressure cooker etc. this kind of adjustment belongs to the utility model discloses cooking utensil's protection range.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof.

Furthermore, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include one or more of the features.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

For convenience of description, spatially relative terms, such as "upper", "circumferential", "peripheral", "outer", "bottom", "back-to-back", "top", "inner", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. This spatially relative relationship is intended to encompass different orientations of the mechanism in use or operation in addition to the orientation depicted in the figures. For example, if the mechanism in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The mechanism may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1, fig. 2 and fig. 3, the first aspect of the present invention provides a sealing ring 30, the second aspect of the present invention provides a cooking apparatus 100, the sealing ring 30 is disposed on the lid 20 of the cooking apparatus 100 and cooperates with the step sealing portion at the opening of the cooking pot 10, so as to achieve the effect of the sealing lid 20 and the cooking pot 10, and for convenience of description, the sealing effect between the sealing ring 30 and the step sealing portion is described below by referring to the sealing structure of the cooking apparatus 100 together with the sealing ring 30 and the step sealing portion.

Specifically, the cooking appliance 100 includes a cooking pan 10 and a cover body 20 covering an opening of the cooking pan 10, the cooking appliance 100 includes a stepped sealing portion (described in detail below) and a sealing ring 30, the stepped sealing portion is disposed at a periphery of the opening of the cooking pan 10, a first stepped surface 11 and a second stepped surface 12 having different radial dimensions and facing the inside of the cooking pan 10 are formed on a side wall of the stepped sealing portion from outside to inside, the sealing ring 30 is disposed on the cover body 20 and located at a position corresponding to the stepped sealing portion, the sealing ring 30 includes a body portion to which a body lip 33 extending substantially in a radial direction of the sealing ring 30 is connected, the body portion is further connected with a first sealing edge 31 and a second sealing edge 32 extending substantially in an axial direction of the sealing ring 30, the first sealing edge 31 and the second sealing edge 32 are spaced apart in the radial direction, and both the first sealing edge 31 and the second sealing edge 32 are formed in an annular shape, the first sealing edge 31 surrounds the outer periphery of the second sealing edge 32, and when the lid 20 is placed on the cooking pan 10 of the cooking utensil 100, the first sealing edge 31 of the sealing ring 30 is engaged with the first step surface 11 of the step sealing portion, and the second sealing edge 32 of the sealing ring 30 is engaged with the second step surface 12 of the step sealing portion.

In this embodiment, the present invention provides a sealing structure which is sealed and matched with the step sealing portion of the opening of the cooking pot 10 through the sealing ring 30, so as to realize the effect of double sealing of the cooking utensil 100. Specifically, the cooking appliance 100 of the embodiment of the application is described by taking an electric cooker as an example, a cooking cavity C is formed in a cooking pot 10 of the electric cooker, an opening is formed at the top of the cooking pot 10, a step sealing portion is formed at the periphery of the opening, the electric cooker further includes a cover body 20 which is arranged at the opening of the cooking pot 10 and is hinged to the cooking pot 10, a sealing ring 30 is arranged on the inner wall of the cover body 20, when the cover body 20 is arranged at the opening of the cooking pot 10 in a covering manner, a first sealing edge 31 on the sealing ring 30 extends to the opening of the cooking pot 10 to be in sealing fit with a first step surface 11 of the inner side wall of the cooking pot 10, and a second sealing edge on the sealing ring 30 extends to the opening of the cooking pot 10 to be in sealing fit with a second step surface 12 of the inner side wall of the cooking pot 10, so as to achieve the purpose of double sealing. Particularly, when the second sealing edge 32, which normally performs a main sealing function, is used and aged in an abnormal situation or when the sealing ring 30 is used for a period of time, the gap between the second sealing edge 32 and the inner wall of the cooking pot 10 is large, so that the second sealing edge cannot be sealed, and at this time, the first sealing edge 31 and the first step surface 11 perform a main sealing function, thereby achieving a double-guarantee sealing effect.

Further, seal structure is still including setting up in the joint groove of the inner wall of lid 20, be provided with the joint portion 34 of being connected with this somatic part on the sealing washer 30, and joint portion 34 extends towards the opposite direction with second sealed limit 32, and the sealing washer 30 passes through joint portion 34 and the inner wall of joint groove installation to lid 20 to improve the stability of being connected between sealing washer 30 and the lid 20, reduce the phenomenon that sealing washer 30 drops from lid 20 in the use.

Further, since the second step surface 12 is closer to the inside of the cooking chamber C than the first step surface 11, therefore, in the axial direction of the seal ring 30, the length of the first sealing edge 31 is smaller than the length of the second sealing edge 32, therefore, the second sealing edge 32 can extend into the cooking pot 10 to be engaged with the second step surface 12, during the operation of the cooking appliance 100, the steam in the cooking cavity C first passes through the second step surface 12 and the second sealing edge 32, so that the second step surface 12 and the second sealing edge 32 perform a main sealing function, when the sealing between the second step surface 12 and the second sealing edge 32 fails, the steam in the cooking cavity C flows through the second step surface 12 and the second sealing edge 32 to the first step surface 11 and the first sealing edge, and at this time, the first step surface 11 and the first sealing edge 32 perform a main sealing function, thereby improving the sealing stability of the cooking appliance 100.

In addition, the above embodiment only illustrates that the first sealing edge 31 and the second sealing edge 32 are disposed on the sealing ring 30, and the specific structure of the sealing ring 30 is not limited, because the sealing ring 30 may be disposed with an integrated step protrusion, the first sealing edge 31 and the second sealing edge 32 are disposed at different positions of the step protrusion, and the sealing ring 30 may also be disposed with two sealing edges that are distributed at intervals, and the step protrusion and the two sealing edges disposed on the sealing ring 30 both belong to the protection range of the sealing ring 30 in the embodiment of the present application, and the following will describe in detail the specific structure of the sealing ring 30 in different embodiments.

The first embodiment: with continued reference to fig. 2 and 3, according to an embodiment of the present invention, the periphery of the sealing ring 30 is provided with a first sealing edge 31 and a second sealing edge 32 spaced apart in the radial direction.

In this embodiment, the first step surface 11 and the second step surface 12 are distributed at the opening from outside to inside, the radial dimension of the first step surface 11 is greater than the radial dimension of the second step surface 12, the first sealing edge 31 and the second sealing edge 32 are arranged at the periphery of the sealing ring 30 from outside to inside, taking the opening of the cooking pot 10 as a circle as an example, the first step surface 11 and the second step surface 12 are both annular surfaces arranged at the opening of the cooking pot 10, the first sealing edge 31 and the second sealing edge 32 are annular sealing edges arranged at the periphery of the sealing ring 30 from outside to inside, and a gap is formed between the first sealing edge 31 and the second sealing edge 32.

Further, the length of the second sealing edge 32 is greater than that of the first sealing edge 31, after the cover 20 is covered at the opening of the cooking pan 10, the first sealing edge 31 on the sealing ring 30 extends to the opening of the cooking pan 10 to be matched with the first step surface 11, the second sealing edge 32 on the sealing ring 30 extends to the opening of the cooking pan 10 to be matched with the second step surface 12, and because the second step surface 12 is located inside the cooking cavity C relative to the first step surface 11, the steam in the cooking pan 10 can firstly pass through the second step surface 12 and the second sealing edge 32, therefore, the second step surface 12 and the second sealing edge 32 play a main sealing role, and because the first sealing edge 31 and the second sealing edge 32 are distributed at intervals around the sealing ring 30, the steam in the cooking pan 10 has less damage and corrosion to the first sealing edge 31, and when the second step surface 12 and the second sealing edge 32 fail to seal, the first step surface 11 and the first sealing edge 31 can also perform a main sealing function on the cooking utensil 100, thereby improving the sealing reliability of the cooking utensil 100.

With continued reference to fig. 2, according to an embodiment of the present invention, the step sealing portion forms a flanging 13 at the edge of the opening, and the edge of the sealing ring 30 is further provided with a body lip 33 cooperating with the flanging 13.

In this embodiment, the body lip 33 on the sealing ring 30 is matched with the outward flange 13 at the opening of the cooking pan 10, so that the sealing performance between the sealing ring 30 and the cooking pan 10 can be further improved, and the phenomenon that the steam in the cooking pan 10 leaks through the gap between the opening of the cooking pan 10 and the sealing ring 30 is reduced. That is, even if the steam in the cooking pan 10 passes through the first sealing edge 31 and the second sealing edge 32 of the gasket 30, the triple sealing effect of the cooking utensil 100 is achieved by the first sealing edge 31, the second sealing edge 32 and the body lip 33 through the matching portion between the body lip 33 of the gasket 30 and the outward flange 13 of the cooking pan 10.

Further, according to the utility model discloses an embodiment, cooking pot 10, step sealing and flanging 13 formula structure as an organic whole, cooking pot 10 forms step sealing and flanging 13 through bending at the opening part, and integrated into one piece's cooking pot 10, step sealing and flanging 13 not only can reduce cooking utensil 100's the manufacturing degree of difficulty and manufacturing cost, can also improve cooking utensil 100's overall structure stability.

With reference to fig. 2, according to an embodiment of the present invention, the sealing ring 30 is further provided with a reinforcing rib 321 located at the bottom of the first sealing edge 31 and/or the second sealing edge 32, and the reinforcing rib 321 is located outside the gap between the first sealing edge 31 and the second sealing edge 32, so as to improve the structural strength of the first sealing edge 31 and/or the second sealing edge 32 by providing the reinforcing rib 321 at the bottom of the first sealing edge 31 and/or the second sealing edge 32, and reduce the deformation of the first sealing edge 31 and/or the second sealing edge 32 when cooperating with the first step surface 11 and/or the second step surface 12. Furthermore, the reinforcing rib 321 is disposed outside the gap between the first sealing edge 31 and the second sealing edge 32, so that the phenomenon that the reinforcing rib 321 occupies the gap between the first sealing edge 31 and the second sealing edge 32 can be reduced.

With continuing reference to fig. 2 and with reference to fig. 4, according to an embodiment of the present invention, a transition surface 14 is formed between the first step surface 11 and the second step surface 12, and a third sealing edge 36 engaged with the transition surface 14 is further disposed on the sealing ring 30.

In the present embodiment, the third sealing edge 36 on the sealing ring 30 is in sealing engagement with the transition surface 14 on the cooking pan 10, so that the sealing performance between the sealing ring 30 and the cooking pan 10 can be further improved, and the phenomenon that the steam in the cooking pan 10 leaks through the gap between the opening of the cooking pan 10 and the sealing ring 30 can be reduced. That is, even if the steam in the cooking pan 10 passes through the first sealing edge 31 of the sealing ring 30, it is necessary to pass through the matching portion between the third sealing edge 36 of the sealing ring 30 and the transition surface 14, so as to reduce the phenomenon that the steam in the cooking utensil 100 corrodes and damages the first sealing edge 31 and the second sealing edge 32 at the same time, so that the second sealing edge 32 of the sealing ring 30 can seal the steam in the cooking utensil 100 after the first sealing edge 31 of the sealing ring 30 corrodes and damages.

With continued reference to fig. 2 and with reference to fig. 4, according to an embodiment of the present invention, the length of the first sealing edge 31 is smaller than the length of the first step surface 11, and there is a gap between the bottom of the first sealing edge 31 and the top of the transition surface 14.

In the embodiment, the length of the first sealing edge 31 is set to be smaller than the length of the first step surface 11, so that in the process of covering the lid body 20 on the cooking pan 10, the interference phenomenon between the first sealing edge 31 on the sealing ring 30 and the transition surface 14 can be reduced, the first sealing edge 31 and the second sealing edge 32 on the sealing ring 30 can smoothly reach the preset installation position, the body lip edge 33 on the sealing ring 30 can be tightly attached to the outward flange 13 at the opening of the cooking pan 10, and the third sealing edge 36 on the sealing ring 30 can be tightly attached to the transition surface 14 of the cooking pan 10.

With continued reference to fig. 2, according to an embodiment of the present invention, there is a gap between the first sealing edge 31 and the first step surface 11, and a gap between the second sealing edge 32 and the second step surface 12.

In the embodiment, by providing the gaps between the first sealing edge 31 and the first step surface 11 and between the second sealing edge 32 and the second step surface 12, in the process of covering the lid body 20 on the cooking pan 10, the interference between the first sealing edge 31 and the first step surface 11 and the interference between the second sealing edge 32 and the second step surface 12 can be reduced, so that the first sealing edge 31 and the second sealing edge 32 on the sealing ring 30 can smoothly reach the predetermined installation positions. After the first sealing edge 31 and the second sealing edge 32 successfully reach the preset installation position, in the working process of the cooking appliance 100, the high-pressure steam in the cooking appliance 100 pushes the second sealing edge 32 to move towards the second step surface 12, and a small amount of steam flows to the first step surface 11 and the first sealing edge 31 after flowing through the second step surface 12, so that the first sealing edge 31 is pushed to move towards the first step surface 11, and the sealing between the first sealing edge 31 and the first step surface 11 and the sealing between the second sealing edge 32 and the second step surface 12 are realized.

With continued reference to fig. 2, according to an embodiment of the present invention, the body lip 33 extends obliquely toward the direction away from the first sealing edge 31 while extending radially toward the sealing ring 30, an obtuse angle structure is formed between the body lip 33 and the first sealing edge 31, and the sealing ring 30 makes the body lip 33 set up on the outer flange 13 through the obtuse angle structure.

In this embodiment, after the body lip 33 successfully reaches the preset installation position, in the working process of the cooking appliance 100, the high-pressure steam in the cooking appliance 100 pushes the body lip 33 to move upward, and a small amount of steam flows to the body lip 33 after flowing through the second step surface 12, the first step surface 11 and the first sealing edge 31, in order to reduce the situation that the body lip 33 is pushed by the high-pressure steam to be separated from the outward flange 13, the obtuse angle structure between the body lip 33 and the sealing ring 30 provided in the embodiment of the present application can apply a clamping force to the outward flange 13, so that a phenomenon that a gap occurs between the body lip 33 and the outward flange 13 is reduced, and the sealing performance between the body lip 33 and the outward flange 13 is improved.

Second embodiment: as shown in fig. 4, according to an embodiment of the present invention, the periphery of the sealing ring 30 is provided with step protrusions 35 distributed along the axial direction, the side walls of the step protrusions 35 are formed with first sealing portions 351 and second sealing portions 352 having different radial dimensions from outside to inside, the first sealing edge is formed at the side of the first sealing portion 351, and the second sealing edge is formed at the side of the second sealing portion 352.

In this embodiment, taking the opening of the cooking pan 10 as a circular shape as an example, the first step surface 11 and the second step surface 12 are both annular surfaces disposed at the opening of the cooking pan 10, the step protrusion 35 is an annular structure disposed on the sealing ring 30, and the outer side wall of the step protrusion 35 is provided with two sealing portions cooperating with the first step surface 11 and the second step surface 12, so that double sealing is achieved by the two sealing portions of the outer side wall of the step protrusion and the first step surface 11 and the second step surface 12 on the cooking pan 10.

It should be noted that the step protrusion 35 in the second embodiment can be understood as connecting the two sealing edges in the first embodiment together, or filling the gap between the two sealing edges in the first embodiment to form the step protrusion 35 in the embodiment of the present application by the two sealing edges and the connecting portion.

In addition, the same structure of the step protrusion 35 in the second embodiment as that of the first sealing edge 31 and the second sealing edge 32 in the first embodiment will not be described again, or the structure of the first sealing edge 31 and the second sealing edge 32 in the first embodiment which does not conflict with the step protrusion 35 in the second embodiment is also applicable to the step protrusion 35 in the second embodiment.

It should be noted that the above embodiments and the accompanying drawings are illustrated according to an electric cooker, however, the electric cooker is only a preferred embodiment of the cooking apparatus 100 of the present invention, and is not a limitation to the protection range of the cooking apparatus 100 of the present invention, for example, the cooking apparatus 100 of the present invention can also be a microwave oven, a pressure cooker or a steam cooking device, and such adjustment belongs to the protection range of the cooking apparatus 100 of the present invention.

Further, the above embodiments and the drawings only illustrate the structures related to the improved point in the electric cooker (such as the cooking pot 10 and the cover 20), and do not represent that the electric cooker only has the above structures, and the structures related to the improved point on the electric cooker are not described herein again.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A seal ring comprising a body portion to which is attached a body lip extending generally radially of the seal ring, the body portion further having attached thereto first and second sealing edges extending generally axially of the seal ring, the first and second sealing edges being radially spaced apart.

2. The seal ring of claim 1, wherein the first sealing edge and the second sealing edge are each formed in an annular shape, the first sealing edge surrounding an outer periphery of the second sealing edge.

3. A seal ring according to claim 1, wherein the length of the first sealing edge is smaller than the length of the second sealing edge in the axial direction of the seal ring.

4. The seal ring as claimed in claim 1, wherein the body lip extends radially of the seal ring and is inclined away from the first sealing edge, the body lip and the first sealing edge forming an obtuse angle therebetween.

5. A seal ring as defined in claim 1, further comprising a snap-in portion connected to the body portion, the snap-in portion extending in a direction opposite the second sealing edge.

6. The seal ring according to claim 1, wherein the seal ring is provided with a step protrusion distributed along the axial direction at the periphery, the side wall of the step protrusion is formed with a first sealing portion and a second sealing portion with different radial dimensions from outside to inside, the first sealing edge is formed at the side surface of the first sealing portion, and the second sealing edge is formed at the side surface of the second sealing portion.

7. Cooking appliance, characterized in that it comprises a sealing ring according to any one of claims 1 to 6.

8. The cooking appliance of claim 7, further comprising a cooking pan and a cover covering the opening to the cooking pan, the cooking pan further comprising:

the step sealing part is arranged at the periphery of the opening, and a first step surface and a second step surface which face the inside of the cooking pot and have different radial sizes are formed on the side wall of the step sealing part from outside to inside;

the sealing ring is arranged on the cover body and is positioned at a position corresponding to the step sealing part, the first sealing edge is matched with the first step surface, and the second sealing edge is matched with the second step surface.

9. The cooking appliance according to claim 8, wherein a transition surface is formed between the first step surface and the second step surface, and a third sealing edge matched with the transition surface is further arranged on the sealing ring.

10. The cooking appliance of claim 8, wherein the stepped seal forms a raised edge at the rim of the opening, the body lip of the seal ring riding on the raised edge.

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