CN220378870U - Sealing ring structure, cover body assembly and cooking utensil - Google Patents

Abstract

The utility model provides a sealing ring structure, a cover body assembly and a cooking utensil, wherein the sealing ring structure comprises: an annular body portion; the first lip edge is connected to the inner side of the annular main body part and comprises a first arc-shaped extension section and an inclined extension section, the first arc-shaped extension section is located between the annular main body part and the inclined extension section, the arc center of the first arc-shaped extension section is located below the annular main body part, an interference fit area is formed on the lower surface of the first arc-shaped extension section, the inclined extension section is inclined downwards, and an included angle between the inclined extension section and the vertical direction is 15-23 degrees. The technical scheme of the application can effectively solve the problem that the influence of the phenomenon of adhering to the pot mouth on the use experience of a user cannot be weakened under the condition of ensuring good sealing in the related technology.

Description

Sealing ring structure, cover body assembly and cooking utensil

Technical Field

The utility model relates to the technical field of small household appliances, in particular to a sealing ring structure, a cover body assembly and a cooking utensil.

Background

As shown in fig. 1, in the related art, a cross section of a sealing ring 1 of a cooking utensil such as an electric pressure cooker is in a herringbone shape, and an R angle of an assembling position of the sealing ring and an inner pot is generally consistent with an R angle of an inner pot mouth, so that the sealing ring is completely attached to the inner pot mouth, and the purpose of avoiding air leakage is achieved.

Although the sealing ring 1 of the pot mouth in the related art can achieve a good sealing effect, because the assembly part of the sealing ring 1 of the pot mouth and the inner pot is completely attached, even under the condition that the pressure inside and outside the pot is nearly the same, when a user performs the opening operation, the phenomenon that the inner pot is taken out together along with the lifting of the pot cover, namely the phenomenon of adhesion of the pot mouth, can occur, so that the user experience is poor.

Therefore, how to reduce the influence of the phenomenon of pot mouth adhesion on the use experience of users under the condition of ensuring good sealing is a technical problem to be solved in the field.

Disclosure of Invention

The utility model mainly aims to provide a sealing ring structure, a cover body assembly and a cooking utensil, so as to solve the problem that the influence of a pot mouth adhesion phenomenon on the use experience of a user cannot be weakened under the condition of ensuring good sealing in the related art.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a gasket structure of a cooking appliance, comprising: an annular body portion; the first lip edge is connected to the inner side of the annular main body part and comprises a first arc-shaped extension section and an inclined extension section, the first arc-shaped extension section is located between the annular main body part and the inclined extension section, the arc center of the first arc-shaped extension section is located below the annular main body part, an interference fit area is formed on the lower surface of the first arc-shaped extension section, the inclined extension section is inclined downwards, and an included angle between the inclined extension section and the vertical direction is 15-23 degrees.

By applying the technical scheme of the utility model, the first lip comprises the first arc-shaped extension section and the inclined extension section, wherein the lower surface of the first arc-shaped extension section forms an interference fit area, so that the first arc-shaped extension section can form tight face seal with the pot body structure, and the sealing effect is ensured. The inclined extending section is connected to one end of the first arc extending section far away from the annular main body part, an included angle between the inclined extending section and the vertical direction is between 15 degrees and 23 degrees, so that after the pressure release of the cooking utensil is completed, the inclined extending section can rebound under the elastic action of the inclined extending section and is separated from the cooker body structure, a larger opening structure can be formed between the inclined extending section and the cooker body structure, and then gas can enter between the first lip and the cooker body structure more smoothly, the stroke of the gas passing through the first lip and the cooker body structure is smaller, the sealing ring structure and the cooker body structure can be separated quickly, and therefore, the cooker body structure can not be taken out along with the cover body assembly in the cover opening process, and the use experience of a user is improved. Therefore, the technical scheme of the application can effectively solve the problem that the influence of the phenomenon of adhering to the pot mouth on the use experience of a user cannot be weakened under the condition of ensuring good sealing in the related technology.

Further, the central angle of the first arc-shaped extension section is between 35 degrees and 55 degrees; and/or the radius of the first arcuate extension is between 3mm and 5mm. Like this the inner of first arc extension has the trend of inwards extending downwards, and then makes the slant extension that is connected with the inner of first arc extension can inwards extend downwards, and then makes the contained angle between slant extension and the vertical direction can satisfy foretell requirement. The radius of the first arc-shaped extension section is smaller, so that the first arc-shaped extension section can form interference fit with the pot body structure, and the sealing effect of the sealing ring structure can be guaranteed.

Further, the oblique extension section comprises a second arc extension section, and the arc center of the second arc extension section is positioned below the first arc extension section. The arrangement makes the tearing stress on the inner surface of the first lip be smaller, and further makes the first lip have stronger anti-damage capability and longer service life.

Further, the radius of the second arcuate extension is between 13mm and 17 mm. Through the radius of reasonable setting second arc extension section, can compromise sealing washer structure sealed effect and prevent pot mouth adhesion performance, promote user's use experience.

Further, the central angle of the second arc-shaped extension section is between 25 ° and 35 °. Through the radius of reasonable setting second arc extension section and the central angle of second arc extension section, can compromise sealing washer structure sealed effect and prevent pot mouth adhesion performance, promote user's use experience.

Further, the sealing ring structure also comprises a second lip connected to the inner side of the annular main body part and used for being in sealing fit with the pot cover, wherein the second lip is identical to the first lip in structure. When the sealing ring structure is installed, the front and back are not needed to be considered, and especially, the user cannot install and disconnect the sealing ring structure.

Further, the seal ring structure also comprises a convex rib arranged on the inner side of the first lip edge. The arrangement of the convex ribs can increase the structural strength of the first lip edge and ensure the safety performance in the pressure cooking process.

Further, an included angle between a bisector of the second arcuate extension and a bisector of the bead is between 3 ° and 7 °. The angle between the two bisectors can effectively improve the safety in the pressure cooking process in the above range.

Further, the sealing ring structure further comprises a plurality of convex edge parts connected to the outer side of the annular main body part. The convex edge part can be inserted into the through hole on the pot cover to fix the sealing ring structure on the pot cover.

According to another aspect of the present utility model, there is provided a lid assembly comprising a lid and a sealing ring structure mounted on the lid, wherein the sealing ring structure is the sealing ring structure described above. The sealing ring structure can effectively solve the problem that the influence of the phenomenon of adhering to the pot mouth on the use experience of a user cannot be weakened under the condition of ensuring good sealing in the related art, and the cover body assembly with the sealing ring structure also has the advantages.

According to another aspect of the present utility model, there is provided a cooking appliance including a pan structure and a cover assembly openably and closably disposed above the pan structure, wherein the cover assembly is the above-mentioned cover assembly. The cover body assembly can effectively solve the problem that the influence of the phenomenon of adhering to the pot mouth on the use experience of a user cannot be weakened under the condition of ensuring good sealing in the related art, and the cooking utensil with the cover body assembly also has the advantages.

Further, the pot body structure comprises a pot body main body, a flanging and an arc-shaped transition section connected between the pot body main body and the flanging, wherein the radius of the arc-shaped transition section is larger than that of the first arc-shaped extension section of the sealing ring structure. The radius of the arc-shaped transition section is larger than that of the first arc-shaped extension section of the sealing ring structure, and the first arc-shaped transition section and the oblique extension section are smoothly transited, so that the first arc-shaped transition section can be in interference fit with the pot body structure, and the sealing effect is further ensured.

Further, the sealing ring structure of the cover body assembly has an initial state and an up-pressing state, and in the initial state, the interference amount between the first lip of the sealing ring structure and the pot body structure is between 0.4mm and 0.5 mm; and/or the fit length of the first lip of the sealing ring structure and the pot body structure is between 4mm and 8 mm. The interference can ensure reliable sealing between the first lip and the pan body structure in the above range, and can compensate the processing error of the pan body structure. The fitting length is in the range, so that the first lip edge and the pot body structure have enough contact area, and the sealing effect between the first lip edge and the pot body structure can be ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic cross-sectional view at an inner pot portion of a related art cooking appliance;

FIG. 2 shows a schematic cross-sectional view of an embodiment of a seal ring structure according to the present utility model;

FIG. 3 shows an enlarged view of the seal ring structure of FIG. 2 at A;

FIG. 4 shows a simplified schematic view of a first lip of the seal ring structure of FIG. 2;

fig. 5 is a schematic cross-sectional view showing a part of the structure of an embodiment of a cooking appliance according to the present utility model;

fig. 6 shows a force analysis diagram of a related art pan mouth seal ring and a seal ring structure in an embodiment of the present application.

Wherein the above figures include the following reference numerals:

1. a pot opening sealing ring; 10. a pot body structure; 11. a pot body main body; 12. flanging; 13. an arc-shaped transition section; 20. a pot cover; 30. an annular body portion; 40. a first lip; 41. a first arcuate extension; 42. a second arcuate extension; 50. a second lip; 60. convex ribs; 70. a convex edge portion;

a. an included angle between the oblique extension section and the vertical direction; b. an included angle between the bisector of the second arc-shaped extension section and the bisector of the convex rib;

r1, the radius of the first arc-shaped extension section; r2, the radius of the second arc-shaped extension section; r3, radius of the arc transition section; r4, radius of the convex rib;

l1, a bisector of the second arc-shaped extension section; l2, bisector of convex rib.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

As shown in fig. 2 to 5, the present application provides a sealing ring structure of a cooking appliance, including: an annular body portion 30 and a first lip 40. The first lip 40 is connected to the inner side of the annular main body 30, the first lip 40 includes a first arc-shaped extension section 41 and an oblique extension section, the first arc-shaped extension section 41 is located between the annular main body 30 and the oblique extension section, the arc center of the first arc-shaped extension section 41 is located below the annular main body 30, the lower surface of the first arc-shaped extension section 41 forms an interference fit area, the oblique extension section extends obliquely downwards, and an included angle a between the oblique extension section and the vertical direction is between 15 ° and 23 °.

By applying the technical scheme of the embodiment, the first lip 40 comprises a first arc-shaped extension section 41 and an inclined extension section, wherein an interference fit area is formed on the lower surface of the first arc-shaped extension section 41, so that a tight face seal can be formed between the first arc-shaped extension section 41 and the pot body structure 10, and the sealing effect is ensured. The slant extension section is connected at the one end that annular main part 30 was kept away from to first arc extension section 41, and the contained angle a between slant extension section and the vertical direction is between 15 ~ 23, so after cooking utensil accomplished the pressure release, slant extension section can rebound and separate with pot body structure 10 under its self elasticity effect, make and can form great opening structure between slant extension section and the pot body structure 10, and then make the gas more smoothly enter into between first lip 40 and the pot body structure 10 and the stroke when gas passed first lip 40 and pot body structure 10 is less, make sealing washer structure and pot body structure 10 can the quick separation, the in-process that the user uncapped like this, pot body structure 10 can not be taken out along with the lid subassembly together, promote user's use experience. Therefore, the technical scheme of the embodiment can effectively solve the problem that the influence of the phenomenon of adhering the pot mouth on the use experience of a user can not be weakened under the condition of ensuring good sealing in the related art.

Specifically, in the present embodiment, the gasket structure is sandwiched between the pot body structure 10 and the pot cover 20 of the cooking appliance, wherein the first lip 40 is capable of sealing engagement with the pot body structure 10.

As shown in fig. 3 and 4, the "arc center of the first arc-shaped extension section 41" refers to the center of the circle where the first arc-shaped extension section 41 is located.

The azimuth terms "upper" and "lower" used in describing the embodiments of the present application refer to "upper" and "lower" in a state in which the cooking appliance is laid on the support platform and the sealing ring structure is engaged with the pot body structure 10, that is, "upper" and "lower" in fig. 2 to 5; the azimuth words "inner" and "outer" are relative to the seal ring structure itself, wherein the vertical axis close to the seal ring structure is "inner" and the vertical axis far from the seal ring structure is "outer".

As shown in fig. 4, in the present embodiment, the included angle a between the oblique extension section and the vertical direction is between 15 ° and 23 °, so as to ensure the sealing effect between the first lip 40 and the pan body structure 10, and avoid air leakage during the pressing process; meanwhile, the overlarge contact area between the first lip edge 40 and the pot body structure 10 can be avoided, the adhesion effect of the pot mouth is guaranteed, the friction force between the first lip edge 40 and the pot body structure 10 in the opening and closing process is smaller, the hand feeling of the opening and closing cover is guaranteed, and the use experience of a user is improved. Preferably, the angle a between the oblique extension and the vertical is in the range of 16 ° to 18 °. Specifically, the included angle a may be 16 °, 17 °, or 18 °.

In this embodiment, the first arc-shaped extension section 41 is disposed tangentially to the oblique extension section. The sealing ring structure is made of silica gel material.

In the present embodiment, the central angle of the first arc-shaped extension 41 is between 35 ° and 55 °. Like this, the inner of first arc extension 41 has the trend of inwards extending downwards, and then makes the slant extension that is connected with the inner of first arc extension 41 can inwards extend downwards, and then makes the contained angle a between slant extension and the vertical direction can satisfy above-mentioned requirement. Preferably, the central angle of the first arcuate extension 41 is in the range of 35 ° to 37 °. In particular, the central angle of the first arcuate extension 41 may be 35 °, 36 ° or 37 °.

As shown in fig. 3, the radius R1 of the first arcuate extension 41 is between 3mm and 5mm. The radius R1 of the first arc-shaped extension section 41 is smaller, so that the first arc-shaped extension section 41 can form interference fit with the pot body structure 10, and the sealing effect of the sealing ring structure can be guaranteed. Preferably, the radius R1 of the first arcuate extension 41 is in the range of 3mm to 3.5mm. In particular, the radius R1 of the first arcuate extension 41 may be 3mm, 3.25mm or 3.5mm.

As shown in fig. 2 to 5, the diagonal extension section includes a second arc extension section 42, and the arc center of the second arc extension section 42 is located below the first arc extension section 41. Compared with the straight extending structure, when the pressure in the pan body structure 10 is applied to the side wall of the pan body structure 10, the tearing stress applied to the inner surface of the first lip 40 is smaller, so that the first lip 40 has stronger anti-damage capability and longer service life.

As shown in fig. 3, the radius R2 of the second arcuate extension 42 is between 13mm and 17mm, and the central angle of the second arcuate extension 42 is between 25 ° and 35 °. By reasonably setting the radius R2 of the second arc-shaped extension section 42 and the central angle of the second arc-shaped extension section 42, the sealing effect of the sealing ring structure and the adhesion performance of the pot mouth can be considered, so that the sealing ring structure has enough sealing capability, and meanwhile, the safety pressure is prevented from being too high, and the safety in the cooking process is ensured; meanwhile, the included angle a between the inclined extension section and the vertical direction can be in the range, so that the cover can be conveniently opened by a user. Preferably, the radius R2 of the second arcuate extension 42 is between 14mm and 16mm, in particular, the radius R2 of the second arcuate extension 42 may be 14mm, 15mm or 16mm; the central angle of the second arc-shaped extension 42 is between 28 ° and 32 °, in particular the central angle of the second arc-shaped extension 42 may be 28 °, 30 ° or 32 °.

The structure of the pot mouth sealing ring in the related art and the sealing ring in the embodiment of the application will be analyzed with reference to fig. 6. Wherein, (a) is a force analysis diagram of a lower lip of the pan opening sealing ring in fig. 1, (a) is a force analysis diagram of a first lip 40 of the sealing ring structure in fig. 2 and 3, fx is a pressure of internal gas of the pan body structure, fy is a total weight of the pan body structure and contents thereof, F1 is a resultant force of the pan opening sealing ring, and F2 is a resultant force of the sealing ring structure.

As can be seen from fig. 6, since the joint area between the sealing ring of the pot opening and the structure of the pot body in fig. 1 is larger, fx is correspondingly larger; furthermore, since the lower lip of the spout seal in fig. 1 has a vertically extending section, fx is a lateral force. In the present embodiment, the joint area between the first lip 40 and the pan body structure 10 is smaller, fx is smaller, and the first lip 40 is jointed with the pan body structure 10 through the upper ends of the first arc-shaped extension section 41 and the second arc-shaped extension section 42, and Fx extends leftwards and downwards.

Compared to the sealing ring of the opening of the pan shown in fig. 1, the resultant force F2 of the present embodiment has a larger component in the vertical direction and a smaller component in the lateral direction (i.e., the friction force when the first lip 40 is separated from the pan body structure 10 is smaller), so that the first lip 40 is more easily separated from the pan body structure 10.

Specifically, the parameters of the process of fitting the seal ring structure and the pan body structure 10 are described below in connection with a preferred embodiment (embodiment one) of the present application.

In embodiment one of the present application:

in the present embodiment, the radius R1 of the first arc-shaped extension section 41 is 3.25mm, and the central angle of the first arc-shaped extension section 41 is 36 °; the included angle a between the oblique extension section and the vertical direction is 17 degrees; the radius R2 of the second arc-shaped extension section 42 is 15mm, and the central angle of the second arc-shaped extension section 42 is 30 degrees; the radius R3 of the arc-shaped transition section 13 of the pot body structure 10 is 5mm.

Wherein, the arc length l of the mouth part of the pot body structure 10 ₁ (i.e. the longitudinal arc length of the arc-shaped transition section) is 7.8mm, and the arc area is S ₁ ≈5180mm ² ＝51.8cm ² (arc area is calculated by the formula S= (90-a) x R x R ₁ Calculating by x pi/360, wherein a is an included angle between the oblique extension section and the vertical direction; r is the median of the diameters on the arcuate surfaces of the first lips 40; r is (r) ₁ A fillet radius for the pan body structure 10);

arc length l of first lip 40 ₂ 10mm arc area S ₂ ≈6900mm ² ＝69cm ² ；

Fitting length l between first lip 40 and pan body structure 10 after seal ring structure is assembled on pan body structure 10 _2-1 5.9mm, the laminated arc area S _2-1 ≈4100mm ² ＝41cm ^2；

Recording the load wp=1 kg per square centimeter of atmospheric pressure (the pressure in the cooker body structure 10 is similar to the atmospheric pressure after pressure relief), the friction coefficient mu of the inner surface of the cooker body structure 10 is approximately equal to 0.4, and the static friction force F applied in the vertical direction after the assembled first lip 40 is completely attached to the cooker body structure 10 _2-1 ＝Wp×S _2-1 ×sin27°×μ×g＝74N。

Whereas in fig. 1:

arc length l of lower lip ₃ Is 10.4mm, and the joint area S between the pan body structure and the pan body structure ₃ ≈7200mm ² ＝72cm ² ；

Static friction force F applied to the assembled lower lip in the vertical direction after the assembled lower lip is completely attached to the pan body structure ₃ ＝Wp×S ₃ ×sin45°×μ×g＝216N。

From the above analysis, the static friction force of the sealing ring of the pot mouth in fig. 1 is far greater than that of the sealing ring structure in the present embodiment, wherein F ₃ The total weight of the pot body structure and the content thereof is far exceeded, and F _2-1 Approximately the total weight of the pan structure 10 and its contents. In this case, due to the included angle a, when the pan body structure 10 is lifted in the process of opening the cover, the root of the included angle a is pulled, so that the attaching area is further reduced rapidly, and the phenomenon of adhesion of the contact pan mouth is further reduced.

The sealing ring structure with other parameters is subjected to stress calculation, sealing effect analysis and pot mouth adhesion prevention effect analysis in the calculation mode as follows:

it can be seen from the above table that the sealing ring structure has good sealing effect and anti-sticking effect when the parameters of the sealing ring structure fall within the ranges defined in the application. When each parameter of the sealing ring structure falls outside the range defined by the application, the sealing requirement and the pot mouth adhesion prevention requirement cannot be met at the same time.

As shown in fig. 2 to 3, the sealing ring structure further includes a second lip 50 coupled to the inner side of the annular body portion 30 for sealing engagement with the lid 20, wherein the second lip 50 is identical in structure to the first lip 40. When the sealing ring structure is installed, the front and back are not needed to be considered, and especially, the user cannot install and disconnect the sealing ring structure.

Of course, in the embodiment not shown in the drawings, the structures of the second lip and the first lip may be different, for example, the extending trend of the second lip and the pot cover is the same, so that whether pressing is performed or not, the second lip can be closely attached to the pot cover, and food and the like are prevented from entering a gap between the second lip and the pot cover, so that the pot cover is more sanitary.

As shown in fig. 2-4, the seal ring structure further includes a bead 60 disposed inboard of the first lip 40. The provision of the bead 60 increases the structural strength of the first lip 40 to ensure safety during pressure cooking.

Specifically, the ribs may be annular ribs or multi-segment rib structures disposed at intervals along the circumferential direction of the first lip.

As shown in fig. 3, the radius R4 of the bead 60 is between 1mm and 5mm. Preferably, the radius R4 of the bead 60 may be 2mm, 3mm or 4mm. Radius R4 of bead 60 within the above-described range can effectively enhance safety during pressure cooking.

As shown in fig. 4, the angle b between the bisector L1 of the second arcuate extension 42 and the bisector L2 of the bead 60 is between 3 ° and 7 °. It should be noted that, the "bisector" refers to a line that can bisect an arc segment into two identical arc segment structures, that is, a line passing through the arc center and the midpoint of the arc segment. Preferably, the angle between the two bisectors may be 3 °, 5 ° or 7 °. The included angle b can effectively improve the safety in the pressure cooking process within the above range.

As shown in fig. 2 and 5, the seal ring structure further includes a plurality of bead portions 70 attached to the outside of the annular body portion 30. Specifically, the cross section of the flange 70 is "T" shaped, which can be inserted into a through hole in the lid 20 to secure the sealing ring structure to the lid 20.

In this embodiment, the first lip 40 is formed of two arcuate extensions, although in the embodiment not shown, the first lip may be formed of more arcuate extensions, so that the opening angle and the length of the fit between the first lip and the pan structure can be better controlled to achieve a quicker separation of the first lip from the pan structure.

As shown in fig. 5, the present application further provides a lid assembly, which includes a lid 20 and a sealing ring structure mounted on the lid 20, wherein the sealing ring structure is the sealing ring structure described above. The sealing ring structure can effectively solve the problem that the influence of the phenomenon of adhering to the pot mouth on the use experience of a user cannot be weakened under the condition of ensuring good sealing in the related art, and the cover body assembly with the sealing ring structure also has the advantages.

In this embodiment, the lid assembly further includes a face cover, a pressure limiting valve, an opening stopping valve, and the like, the lid 20 is disposed below the face cover, and the pressure limiting valve and the opening stopping valve are disposed through the face cover and the lid 20.

Of course, in embodiments not shown in the figures, the cover assembly may not include a face cover.

As shown in fig. 5, the application further provides a cooking appliance, which comprises a pot body structure 10 and a cover body assembly arranged above the pot body structure 10 in an openable and closable manner, wherein the cover body assembly is the cover body assembly. The cover body assembly can effectively solve the problem that the influence of the phenomenon of adhering to the pot mouth on the use experience of a user cannot be weakened under the condition of ensuring good sealing in the related art, and the cooking utensil with the cover body assembly also has the advantages.

As shown in fig. 5, the pot body structure 10 includes a pot body 11, a flange 12, and an arc-shaped transition section 13 connected between the pot body 11 and the flange 12, wherein a radius R3 of the arc-shaped transition section 13 is greater than a radius R1 of the first arc-shaped extension section 41 of the seal ring structure. The radius R3 of the arc-shaped transition section 13 is larger than the radius R1 of the first arc-shaped extension section 41 of the sealing ring structure, and the first arc-shaped transition section 13 can be in interference fit with the pot body structure 10 while the smooth transition between the first arc-shaped extension section 41 and the inclined extension section is realized, so that the sealing effect is ensured.

Specifically, in the present embodiment, the radius R3 of the arcuate transition 13 is between 4.5mm and 6mm. Preferably, the radius R3 of the arcuate transition 13 may be 5mm or 6mm.

Specifically, the seal ring structure of the lid assembly has an initial state in which the first lip 40 of the seal ring structure interferes with the pan structure 10 by an amount of between 0.4mm and 0.5mm and an up-pressed state. It should be noted that, the "initial state" refers to a state in which the pan body structure 10 is not pressed and the sealing ring structure is pressed on the pan body structure 10 only under the gravity action of the cover body assembly; the "pressure-up state" refers to a state in which the pressure in the interior of the pot body structure 10 rises after heating and the opening-stop valve is lifted up. In the initial state, the interference amount between the first lip 40 of the sealing ring structure and the pot body structure 10 is between 0.4mm and 0.5mm, so that the reliable sealing between the first lip 40 and the pot body structure 10 can be ensured. In addition, because the first lip 40 of the sealing ring structure has a larger interference amount with the pot body structure 10, even if a certain machining error exists in the pot body structure 10, the first lip 40 and the pot body structure 10 also have a certain extrusion area, so that the sealing effect is ensured. Preferably, in the initial state, the amount of interference between the first lip 40 of the sealing ring structure and the pan body structure 10 is between 0.45mm and 0.5mm, in particular, the amount of interference between the two may be 0.45mm or 0.5mm.

In the initial state, the fit length of the first lip 40 of the seal ring structure and the pan body structure 10 is between 4mm and 8 mm. That is, in the initial state, there is a sufficient contact area between the first lip 40 and the pan body structure 10, so that a sealing effect between the two can be ensured. Preferably, in the initial state, the conforming length of the first lip 40 to the pan body structure 10 is between 5.5mm and 6.5mm. Specifically, the fit length between the two may be 5.5mm, 5.9mm, or 6.5mm.

In this embodiment, because there is a certain interference and a certain fitting length between the first lip 40 and the pan body structure 10, air leakage is not easy to occur even in the process of pressing up, so that the pressure in the pan body structure 10 can rise rapidly.

In this embodiment, the cooking appliance is a pressure cooking appliance. Of course, in the embodiment not shown in the drawings, the cooking appliance may also be a product such as an electric rice cooker, a low-pressure rice cooker, a soymilk machine, a cooking machine, a cooker, an electric stewpot, a multifunctional pot, etc.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (13)

1. A sealing ring structure of a cooking appliance, comprising:

an annular main body (30);

the first lip (40) is connected to the inner side of the annular main body part (30), the first lip (40) comprises a first arc-shaped extension section (41) and an inclined extension section, the first arc-shaped extension section (41) is located between the annular main body part (30) and the inclined extension section, the arc center of the first arc-shaped extension section (41) is located below the annular main body part (30), an interference fit area is formed on the lower surface of the first arc-shaped extension section (41), the inclined extension section extends obliquely downwards, and an included angle (a) between the inclined extension section and the vertical direction is 15-23 degrees.

2. A sealing ring structure according to claim 1, characterized in that the central angle of the first arc-shaped extension (41) is between 35 ° and 55 °; and/or the radius (R1) of the first arcuate extension (41) is between 3mm and 5mm.

3. The seal ring structure according to claim 1, characterized in that the oblique extension comprises a second arc-shaped extension (42), the arc center of the second arc-shaped extension (42) being located below the first arc-shaped extension (41).

4. A sealing ring structure according to claim 3, characterized in that the radius (R2) of the second arcuate extension (42) is between 13mm and 17 mm.

5. A sealing ring structure according to claim 3, characterized in that the central angle of the second arcuate extension (42) is between 25 ° and 35 °.

6. The sealing ring structure according to any one of claims 1 to 5, further comprising a second lip (50) connected to the inside of the annular body portion (30) for sealing engagement with a pot lid, wherein the second lip (50) is structurally identical to the first lip (40).

7. The seal ring structure of any one of claims 3 to 5, further comprising a bead (60) disposed inboard of the first lip (40).

8. The sealing ring structure according to claim 7, characterized in that the angle (b) between the bisector (L1) of the second arcuate extension (42) and the bisector (L2) of the bead (60) is between 3 ° and 7 °.

9. The sealing ring structure according to any one of claims 1 to 5, further comprising a number of bead portions (70) connected outside the annular body portion (30).

10. A lid assembly comprising a lid (20) and a sealing ring structure mounted on the lid (20), characterized in that the sealing ring structure is a sealing ring structure according to any one of claims 1 to 9.

11. A cooking appliance comprising a pot structure (10) and a cover assembly arranged above the pot structure (10) in an openable and closable manner, characterized in that the cover assembly is the cover assembly of claim 10.

12. The cooking appliance according to claim 11, wherein the pan structure (10) comprises a pan body (11), a rim (12) and an arcuate transition (13) connected between the pan body (11) and the rim (12), wherein a radius (R3) of the arcuate transition (13) is larger than a radius (R1) of the first arcuate extension (41) of the sealing ring structure.

13. The cooking appliance of claim 11, wherein the sealing ring structure of the cover assembly has an initial state and an up-pressed state, in the initial state,

the interference between the first lip (40) of the sealing ring structure and the pan body structure (10) is between 0.4mm and 0.5 mm; and/or the number of the groups of groups,

the fit length of the first lip (40) of the sealing ring structure and the pot body structure (10) is between 4mm and 8 mm.