CN211242828U

CN211242828U - Prevent inhaling courage type cooking utensil

Info

Publication number: CN211242828U
Application number: CN201921405642.4U
Authority: CN
Inventors: 朱泽春; 田海峰; 陈建强; 杨新国
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-08-14
Anticipated expiration: 2029-08-27

Abstract

The utility model discloses a prevent inhaling courage type cooking utensil, include: the pot body is internally provided with an inner container; the pot cover, the pot cover through the pivot with the pot body is articulated, the sealing washer is installed to the pot cover, the sealing washer is including the sealing washer body and the lower lip limit that link to each other, the lower lip limit face to one side of inner bag be provided with can with the protruding muscle of internal face seal fit of inner bag, the protruding muscle of annular is being close to breach is seted up to one side of pivot. The utility model discloses a protruding muscle of annular is close to the breach is seted up to one side of pivot, can increase air input and air inlet speed, eliminates uncapping negative pressure that volume expansion brought in the courage in the twinkling of an eye, eliminates and inhales courage phenomenon, and convenience of customers uncaps, promotes user experience.

Description

Prevent inhaling courage type cooking utensil

Technical Field

The utility model belongs to the technical field of kitchen appliance, especially, relate to a prevent inhaling courage type cooking utensil.

Background

Pressure cooking utensils among the prior art generally include the pot body and pot cover, be equipped with the inner bag in the pot body, be equipped with the sealing washer between pot cover and the inner bag to make pot cover with form inclosed culinary art cavity between the inner bag. The pressure in the pot is released through the pressure release valve after the cooking is finished, meanwhile, the floater on the pot cover falls down, the internal and external pressure of the pot body is close to each other, the cover opening button is pressed at the moment, the pot cover is opened in a delayed mode, the liner suction phenomenon occurs, namely, the pot cover and the inner liner are adsorbed together, and the phenomenon that the cover cannot be opened smoothly is caused. The main reason that leads to this phenomenon to take place is that uncapping in the twinkling of an eye, the air volume is expanded in the courage, and the process that outside air supplyed to the courage is slow, causes the interior negative pressure of courage to increase, and simultaneously, the air temperature that gets into from the outside is lower, inevitably leads to the interior air pressure of courage to further reduce, increases the degree of difficulty of uncapping.

There is a pressure cooking utensil among the prior art, and it includes sealing washer and inner bag, the sealing washer including be used for with the internal face of inner bag carries out the lower lip limit that the contact is sealed, the lower lip limit be used for with the surface of inner bag internal face contact includes smooth surface part and rough surface part, the internal face of inner bag is including being used for the smooth surface part that corresponds with the smooth surface part on the lip limit under the sealing washer to and the rough surface part that corresponds with the rough surface part on the lip limit down, and the rough surface part of sealing washer and the rough surface part of inner bag internal face are frosted surface or have the surface of concave-convex line, and the sealing washer still includes the upper lip limit that links firmly with the lower lip limit, the upper lip limit in the flanging of inner bag. The pressure cooking utensil relies on the smooth surface part of sealing washer and the smooth surface part of inner bag internal wall face to seal when pushing up, relies on the clearance realization that admits air between the rough surface part of sealing washer and the rough surface part of inner bag internal wall face when uncapping to make pressure cooking utensil's upper cover and inner bag separate easily and realize uncapping. The pressure cooking appliance has the following defects: the design of the rough surface part of the sealing ring, which is contacted with the inner wall surface of the liner, is uneven, the texture is disordered, so that the air guide directions are inconsistent, a plurality of dead hairs exist, the air inlet effect is poor, the upper lip edge is in a closed state when the liner is opened, air cannot be rapidly introduced to eliminate negative pressure in the liner, and the liner is difficult to open; the rough surface part of the lower lip edge is contacted with the rough surface part of the upper lip edge at a position where water vapor is easy to collect, and the rough surface part can discharge air collected on the combined surface of the lower lip edge and the upper lip edge to form a liquid seal effect, so that the adsorption force of the lower lip edge and the inner wall surface of the liner is increased, and the liner absorption phenomenon still exists.

Still there is a cooking equipment among the prior art, it includes lid, float spare and adjusting device, the float spare is located on the lid, the float spare has exhaust passage, adjusting device can control exhaust passage's the state that opens and shuts can realize the inside intercommunication with external environment of cooking equipment when exhaust passage is opened with balanced atmospheric pressure to improve the problem of uncapping and inhaling the pot, nevertheless cooking equipment structure is complicated, and spare part is more in the lid, and manufacturing cost is high, and the air input of process exhaust passage of uncapping is slow, can't realize eliminating the interior negative pressure of courage fast.

SUMMERY OF THE UTILITY MODEL

The utility model provides a prevent inhaling courage type cooking utensil to solve at least one technical problem among the above-mentioned technical problem.

The utility model discloses the technical scheme who adopts does:

an anti-suction liner type cooking appliance comprising: the pot body is internally provided with an inner container; the pot cover, the pot cover through the pivot with the pot body is articulated, the sealing washer is installed to the pot cover, the sealing washer is including the sealing washer body and the lower lip limit that link to each other, the lower lip limit face to one side of inner bag be provided with can with the protruding muscle of internal face seal fit of inner bag, the protruding muscle of annular is being close to breach is seted up to one side of pivot.

The two sides of the notch are respectively provided with a flow guide rib, one end of each flow guide rib is fixedly connected with the annular convex rib, the other end of each flow guide rib extends upwards, and the two flow guide ribs are parallel to each other or are two.

The annular convex rib is provided with a plurality of notches at one side close to the rotating shaft.

Height H of the annular convex rib₁Satisfies the requirement that H is less than or equal to 0.1mm₁≦ 2 mm; height H of the flow guide rib₂Satisfies the requirement that H is less than or equal to 0.1mm₂≦2mm。

The sealing ring further comprises an upper lip edge, one end of the upper lip edge is fixedly connected with the sealing ring body and/or the lower lip edge, the other end of the upper lip edge is a free end, and a gap is formed between the upper lip edge and the lower lip edge; when the cooker cover is in a state of buckling the cooker body, the upper lip edge is provided with a first position which is abutted against the inner container to seal the inner container and a second position which moves towards the lower lip edge to be separated from the inner container so as to form an air inlet gap between the upper lip edge and the inner container; the gap is located below the free end of the upper lip.

The liner comprises a liner body, an everted liner edge and a chamfer part connecting the liner body and the liner edge, and in the first position, the free end of the upper lip edge is abutted against the chamfer part or the liner edge.

One side of the annular convex rib facing the inner container is a rough surface, and the rough surface is a surface with concave-convex grains and/or a frosted surface.

One side of the annular convex rib facing the inner container is provided with one or more grooves.

The lower lip edge comprises an upper sealing part and a lower sealing part, one end of the upper sealing part is fixedly connected with the sealing ring body, one end of the lower sealing part is fixedly connected with the other end of the upper sealing part, and the other end of the lower sealing part is a free end; the annular convex rib is arranged at the joint position of the upper sealing part or the upper sealing part and the lower sealing part.

At least a partial region of the lower seal portion is inclined toward a center direction of the seal ring.

Since the technical scheme is used, the utility model discloses the beneficial effect who gains does:

1. the utility model provides a pot cover is articulated with the pot body, and the in-process of uncapping, lower lip limit with clearance between the inner bag lateral wall is being close to the pot cover with pot body looks articulated pivot position department draws big at first, and is the fastest at this position department clearance increase rate, the annular protruding muscle in lower lip limit is located to set up the breach in this position, can increase air input and air inlet speed, eliminates the negative pressure that uncap in the twinkling of an eye the volume expansion in the inner bag brought, eliminates and inhales courage phenomenon, and convenience of customers uncaps, promotes user experience.

2. As a preferred embodiment of the utility model, the both sides of breach are provided with the water conservancy diversion muscle respectively, the one end of water conservancy diversion muscle with the protruding muscle of annular links firmly, and the other end upwards extends, the water conservancy diversion muscle plays when pressing or play the back in the courage, it is right the breach plays limiting displacement, is used for preventing the both ends of breach become narrow and be unfavorable for the later stage intake when uncapping under the effect of atmospheric pressure effect and thermal expansion. In addition, two the water conservancy diversion muscle is parallel to each other or two the upper end of water conservancy diversion muscle is kept away from each other relatively, and this mode of setting up of water conservancy diversion muscle is favorable to when uncapping, forms the drainage effect to outside gas, will follow the gas drainage that the clearance of admitting air between upper lip limit and the inner bag got into extremely the breach, and pass through the breach gets into in the inner bag to promote the admission speed, be favorable to eliminating the interior negative pressure of courage fast, realize uncapping fast.

3. As an optimal implementation mode of the utility model, the protruding muscle of annular towards one side of inner bag has recess or mat surface, after the upper pressure, under the steam atmospheric pressure effect in the inner bag, the recess or the mat surface department inflation of the protruding muscle of annular realize sealed effect, behind the pressure release, the recess or the mat surface department of the protruding muscle of annular resume the shape, the area of contact of sealing washer and inner bag can be reduced in the existence of recess or mat surface to reduce the adsorption affinity, and help outside air to get into the inner bag fast inside, eliminate negative pressure in the courage, avoid inhaling the courage.

4. The utility model provides a protruding muscle of annular is small, and compressible deflection is big, when the pot cover lock is to the pot body, protruding muscle of annular can all the time with the contact of inner bag inner wall, the big deflection of protruding muscle of annular can compensate the size change of sealing washer expend with heat and contract with cold, consequently can reduce the sealing washer size precision requirement because of the inflation brings, reduces the processing degree of difficulty, improves production efficiency.

5. The utility model provides a sealing washer makes cooking utensil has the function that does not leak gas in inner bag heating process, allows to admit air, can uncap smoothly under the hot attitude after the exhaust. Specifically speaking: in the process of upward pressing, under the action of steam pressure in the liner, the upper lip edge of the sealing ring is abutted and sealed with the liner, so that steam is prevented from escaping from a contact gap between the liner and the upper and lower lip edges, and external gas can be prevented from entering; after the pressure release, open the pot cover in the twinkling of an eye, outside atmospheric pressure is greater than the inside atmospheric pressure of inner bag, and outside gas orders about the direction motion of lip edge orientation downward lip edge to open the admission gap between lip edge and inner bag, outside air current through this admission gap and inside the breach constantly flows into the inner bag, eliminated courage internal negative pressure, avoided inhaling the emergence of courage phenomenon, can realize uncapping fast, promote user experience.

6. As a preferred embodiment of the utility model, go up the lip limit with have less clearance between the lower lip limit, in last pressure process, the existence in this clearance is favorable to increasing the area of contact of courage inner steam and last lip limit to make the upper lip limit move and seal with the inner bag butt in the direction of keeping away from the lower lip limit under the effect of courage inner steam, after the pressure release, the existence in this clearance is favorable to going up the lip limit and breaking away from the formation air inlet gap towards the direction motion of lower lip limit and with the inner bag under the effect of outside atmospheric pressure.

7. As an optimal implementation mode of the utility model, after the top pressure, the free end in the lip limit with be used for being connected the courage along with the chamfer portion butt of inner bag inner wall, on the one hand, the inner bag inner wall can be right the free end forms spacingly, helps the butt of free end and inner bag inner wall to seal, and on the other hand is located because of the butt position department of free end and inner bag chamfer portion compares in the position on courage edge, behind the pressure release, under the effect of external gas the lip limit moves towards lip limit down, under this implementation mode the free end breaks away from with the inner bag more easily to realize admitting air fast.

8. As a preferred embodiment of the present invention, in a natural state, at least a partial region of the lower sealing portion of the lower lip edge is inclined toward the center of the sealing ring, and the inclined lower sealing portion can form a guide in the process of fastening the lid, and on the other hand can form an air inlet gap under the action of the external force and the elastic restoring force of the external gas to facilitate air intake.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the application and not to limit the invention. In the drawings:

fig. 1 is a cross-sectional view of an embodiment of the cooking appliance of the present invention.

Fig. 2 is a perspective view of an embodiment of the sealing ring according to the present invention.

Fig. 3 is a perspective view of another embodiment of the sealing ring according to the present invention.

Fig. 4 is a partial cross-sectional view of an embodiment of the sealing ring according to the present invention.

Fig. 5 is a sectional view taken along line a-a of fig. 4.

Fig. 6 is a schematic view of a partial structure of the cooking appliance when the pot cover is opened according to an embodiment of the present invention, wherein an arrow direction shows a flow direction of external air.

Fig. 7 is a schematic state diagram of a partial structure of the cooking device after being pressed up inside the inner container according to an embodiment of the present invention.

Fig. 8 is a schematic illustration of the location of the gap in the present invention for convenience of description.

Wherein:

1, a seal ring, 11, a seal ring body, 12 upper lip edges, 121 positioning parts, 122 skirt edge parts, 123 expansion parts, 13 lower lip edges, 131 upper sealing parts, 132 lower sealing parts, 133 annular seal rings, 134 gaps and 135 flow guide ribs; 2, covering the pot; 3 inner container, 31 inner container edge, 32 chamfer; 4 presetting a gap; 5 air inlet gap; 6, a gap; 7 a rotating shaft.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it is to be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 to 3, a cooking appliance of a bladder absorption prevention type includes: the pot body is internally provided with an inner container 3; the pot cover 2, the pot cover 2 through the pivot 7 with the pot body is articulated, sealing washer 1 is installed to pot cover 2, sealing washer 1 is including the sealing washer body 11 and the lower lip 13 that link to each other. One side of the lower lip edge 13 facing the inner container 3 is provided with an annular convex rib 133 capable of being in sealing fit with the inner wall surface of the inner container 3, and one side of the annular convex rib 133 close to the rotating shaft 7 is provided with a notch 134. In the cover opening process, under the same rotation angle, the gap between the part of the lower lip edge 13 close to one side of the rotating shaft 7 and the inner wall of the inner container 3 is firstly enlarged, and the gap is increased at the fastest speed, so that the outer air can rapidly enter the inner container 3, instantaneous negative pressure caused by volume expansion in the inner container at the moment of opening the cover is compensated, and the problem of sucking the inner container is solved.

The utility model provides a "annular protruding muscle 133 is close to one side of pivot 7" is a relative concept, is for annular protruding muscle 133 keeps away from one side of pivot 7 is more close to the distinctive explanation of pivot 7. Taking the side of the cooking utensil where the pot cover 2 is hinged to the pot body as the rear side of the cooking utensil, the side opposite to the side is the front side of the cooking utensil, and the side close to the rotating shaft 7 is located at the rear side of the cooking utensil.

For convenience of description, as shown in fig. 8, the center of the annular rib 133 is set as a point O, a horizontal plane passing through the center of the annular rib 133 is set as a plane P, two end points of the projection of the rotating shaft 7 in the plane P are respectively set as a point a and a point B, a middle point of the projection of the rotating shaft 7 in the plane P is set as a point E, an intersection of a connecting line of the point O and the point a and the annular rib 133 is a point C, an intersection of a connecting line of the point O and the point B and the annular rib 133 is a point D, and an intersection of a connecting line of the point O and the point E and the annular rib 133 is a point F, preferably, the notch 134 is disposed in a region between the point C and the point D of the annular rib 133 and a region between the point C and the point D. Further, the notch 134 is provided at the point F of the annular bead 133.

As a preferred embodiment of the present invention, the annular rib 133 is provided with a plurality of notches 134 at one side close to the rotating shaft 7. A plurality of breach 134 can be in C point, D point and regional interval between C point and the D point sets up to increased the air input, promoted the efficiency of admitting air, be favorable to uncapping in the twinkling of an eye quick elimination courage negative pressure.

As a preferred embodiment of the present invention, the two sides of the notch 134 are respectively provided with a diversion rib 135, one end of the diversion rib 135 is fixedly connected with the annular convex rib 133, and the other end extends upwards. When or after the water conservancy diversion muscle 135 plays to press in the courage, right breach 134 plays limiting displacement for prevent the both ends of breach 134 narrow under atmospheric pressure effect and the effect of thermal expansion and be unfavorable for the later stage when uncapping admit air. And the arrangement of the flow guide ribs 135 is favorable for forming a drainage effect on external gas when the cover is opened, so that the gas entering from the gas inlet gap 5 between the upper lip edge 12 and the liner 3 is drained to the notch 134 and enters the liner 3 through the notch 134, thereby improving the gas inlet speed, being favorable for quickly eliminating the negative pressure in the liner and realizing quick cover opening.

In a specific example of the present invention, two of the flow guiding ribs 135 are parallel to each other. In another specific example of the present invention, the upper ends of two of the flow guiding ribs 135 are relatively far away from each other. No matter two the water conservancy diversion muscle 135 that are parallel to each other, or the upper end is relative two far away from each other the water conservancy diversion muscle 135 all forms the water conservancy diversion effect to gas more easily, just annular protruding muscle 133 is heated the inflation and can keep under the squeezing action that receives the inside atmospheric pressure of inner bag 3 breach 134's existence makes breach 134 not closed, makes things convenient for the admitting air in later stage.

In the utility model, the height H of the annular convex rib 133₁Satisfies the requirement that H is less than or equal to 0.1mm₁≦ 2 mm; height H of the flow guide rib 135₂Satisfies the requirement that H is less than or equal to 0.1mm₂≦ 2 mm. The height of the annular rib 133 refers to the thickness of the annular rib 133 protruding relative to the lower lip 13, and the height of the air guide rib 135 refers to the thickness of the air guide rib 135 protruding relative to the lower lip 13. Further, the height of the annular rib 133 and the guideThe height of the flow ribs 135 is 0.5mm each. Annular protruding muscle 133 with the small-size of water conservancy diversion muscle 135 makes it have big compression deformation, easily compensates or the buffering in the use 1 expend with heat and contract with cold's dimensional change of sealing washer to can reduce the sealing washer 1 size precision requirement that the thermal energy brought, when the pot lid 2 lock was to the pot body, annular protruding muscle 133 can contact with inner container 3 inner wall all the time, does not need sealing washer 1 and inner container 3 to keep higher size precision requirement.

As a preferred embodiment of the present invention, the annular rib 133 has a groove on a side facing the inner container 3. The groove has at least the following functions: when the inner container 3 is heated and the inner container 3 starts to be pressed upwards, the generated steam is easy to flow through the gap between the lower sealing part 132 and the inner container 3 and the gap 6 between the upper lip edge 12 and the lower lip edge 13 through the groove to act on the upper lip edge 12, so that the upper lip edge 12 is abutted against the inner container 3, and liquid seal is formed between the steam remained between the groove and the upper lip edge and the lower lip edge and the inner container 3, thereby improving the sealing performance; after pressure relief is completed or heating is stopped for a period of time until the internal air pressure of the inner container 3 is basically equal to the external air pressure or less than the external air pressure, the existence of the groove can reduce the contact area between the annular convex rib 133 and the inner wall surface of the inner container 3, so that the adsorption force between the annular convex rib 133 and the inner wall surface of the inner container 3 is reduced, external air can more easily enter the groove and the inner wall surface of the inner container 3 after passing through the air inlet gap 5 between the upper lip edge 12 and the inner container 3, the annular convex rib 133 can more easily separate from the inner wall surface of the inner container 3, the external air can be conveniently entered, and the pot suction is avoided.

The structural form and the arrangement of the grooves can adopt any one of the following two embodiments:

example 1: in this embodiment, the groove extends continuously along the circumferential direction of the annular rib 133, i.e., the groove is annular.

Example 2: the grooves are arranged in a plurality of circumferential intervals along the annular rib 133, that is, the annular rib 133 is provided with a plurality of grooves along the circumferential direction thereof. Preferably, the grooves are uniformly arranged along the circumferential direction of the annular rib 133, so that on one hand, injection molding is facilitated, on the other hand, the circumferential stress of each part of the annular rib 133 is uniform, and the sealing performance is improved.

Of course, the structural form and arrangement of the grooves in the present invention are not limited to the above examples, and other structural forms and arrangements may be adopted.

As another preferred embodiment of the present invention, the annular rib 133 faces one side of the inner container 3 and is a rough surface, and the rough surface can be reduced by setting the contact area of the annular rib 133 and the inner container 3 inner wall surface, so as to reduce the adsorption force between the two. The rough surface is a surface with concave-convex grains and/or a frosted surface. The concave-convex lines can be formed on one side surface of the annular convex rib 133 facing the inner container 3 through washing, cutting, etching or laser marking, and the like, and the concave-convex lines can also be formed on the annular convex rib 133 through other modes in the prior art. For the structure of the seal ring 1 by injection molding, the frosted surface can be formed by the following method: the frosted surface structure corresponding to the rough surface of the annular convex rib 133 is designed at the mold for molding the annular convex rib 133, so that the frosted surface is directly molded through injection molding, the manufacturing method is simple and rapid, and the processing cost is reduced.

The sealing ring 1 further comprises an upper lip 12, and one end of the upper lip 12 is a free end. In an example of the present invention, the other end of the upper lip 12 is fixedly connected to the seal ring body 11. In another example of the present invention, the other end of the upper lip edge 12 is fixedly connected to the lower lip edge 13. In another example of the present invention, the other end of the upper lip 12 is fixedly connected to both the seal ring body 11 and the lower lip 13. When the lid 2 is engaged with the pot body, as shown in fig. 7, the upper lip 12 has a first position abutting against the inner container 3 to seal the inner container 3, and as shown in fig. 6, moves toward the lower lip 13 to be separated from the inner container 3, so that an air inlet gap 5 is formed between the upper lip 12 and the inner container 3.

In the present invention, as shown in fig. 2 and 3, the gap 134 of the annular rib 133 is located below the free end of the upper lip 12 to prevent the cover from being opened, the upper lip 12 faces the lower lip 13 to move and block the gap 134.

Specifically, as shown in fig. 1, 6, and 7, the lower lip 13 is fixedly connected to the seal ring body 11 and extends downward, the upper lip 12 is located outside the lower lip 13 and extends downward so as to contact the liner 3, at least a part of the area of the lower lip 13 can extend into the liner 3, when the lower lip 13 is in a free state (i.e., an unstressed state), a preset gap 4 is formed between the lower lip 13 and the inner wall surface of the liner 3, and when the liner 3 is heated and the air pressure in the liner 3 rises, the lower lip 13 moves to one side of the sidewall of the liner 3 and eliminates the preset gap 4 under the action of the air pressure in the liner 3, thereby achieving a sealing effect. Meanwhile, the outward expansion of the lower lip edge 13 drives the upper lip edge 12 to move towards the inner container 3, and the steam generated by heating the inner container 3 can penetrate through a gap between the lower lip edge 13 and the inner wall surface of the inner container 3 and act on the upper lip edge 12, so that the upper lip edge 12 can be abutted against the inner container 3 to form sealing. After heating or pressure relief is stopped, the pressure in the inner container 3 is reduced, the lower lip edge 13 contracts inwards under the action of self resilience force and recovers the preset gap 4 gradually, when the cover is opened, external gas acts on the upper lip edge 12 to push the upper lip edge 12 to move towards the lower lip edge 13 so as to separate the upper lip edge 12 from the inner container 3 and form the air inlet gap 5, and the external gas continuously floods into the inner container 3 through the air inlet gap 5, so that negative pressure in the inner container is eliminated, and the cover opening of a user is facilitated.

More specifically, as shown in fig. 4, the upper lip 12 includes a connecting positioning portion 121 and a skirt portion 122, the positioning portion 121 is used for connecting the seal ring body 11 and/or the lower lip 13, and the free end is disposed on the skirt portion 122. Preferably, the rigidity of the positioning portion 121 is greater than the rigidity of the skirt portion 122, so that the positioning portion 121 is not easily deformed with respect to the skirt portion 122, and the movement of the skirt portion 122 is facilitated. In a specific example, the thickness of the positioning portion 121 is significantly greater than that of the skirt portion 122, so as to realize the difference in rigidity between the two, and the seal ring 1 in this embodiment is easy and inexpensive to manufacture. In another specific example, the sealing ring 1 is formed by two-shot injection molding, that is, the rigidity of the material used for forming the positioning portion 121 is greater than the rigidity of the material used for forming the skirt portion 122, so as to realize the difference in rigidity between the two.

As shown in fig. 1, 6 and 7, the mouth of the inner container 3 is provided with an outward-turned inner container edge 31, and the inner container edge 31 is arranged to facilitate the user to take and place the inner container 3, and to guide the inflow of external air when the lid 2 is opened, thereby facilitating the movement of the skirt portion 122. The engagement between the skirt portion 122 and the inner liner 3 may be implemented in any one of the following two embodiments:

first embodiment, first position, skirt portion 122 with inner bag 3 the 31 butts are followed to the courage, compare in prior art pot cover lid when closing the inner bag, go up lip limit "tiling" along the inner bag on, through increase area of contact in order to realize sealed technical scheme, in the utility model discloses in skirt portion 122's tip with the courage is sealed along 31 butts, and it can enough realize sealing when last pressure, can be when the pressure release again, because of area of contact is less, and reduces its and courage along 31 adsorption affinity, makes things convenient for the introduction of outside gas to form fast between skirt portion 122 and courage along 31 intake gap 5.

In the second embodiment, as shown in fig. 7, in the first position, the skirt portion 122 abuts against a chamfered portion 32 for connecting the liner edge 31 and the inner wall of the liner 3, and preferably, the chamfered portion 32 has an arc-shaped cross section. In the present embodiment, in the first position, one end of the skirt portion 122 abuts against the chamfered portion 32, and the arc-shaped chamfered portion 32 can limit the skirt portion 122, which contributes to the abutting sealing of the free end against the inner wall of the liner 3, and compared to the embodiment in which the skirt portion 122 abuts against the liner edge 31, in the present embodiment, after the pressure is released, as shown in fig. 6, the skirt portion 122 can be more quickly separated from the contact with the liner 3 by the external air, and the air intake gap 5 is formed, thereby facilitating the rapid inflow of the external air.

In a preferred embodiment of the present invention, a gap 6 is provided between the skirt portion 122 and the lower lip 13, as shown in fig. 6, during heating or pressing, the presence of the gap 6 is advantageous to increase the contact area between the liner steam and the upper lip 12, so that the upper lip 12 moves in a direction away from the lower lip 13 by the liner steam and is sealed in abutment with the liner 3, and after pressure release, the skirt portion 122 presses the elastic lower lip 13 to form the air inlet gap 5 between the skirt portion 122 and the liner 3 under the force of the external air during opening the lid, compared to the case where there is no gap between the skirt portion 122 and the lower lip 13, the presence of the gap 6 enables the skirt portion 122 to move more easily in the direction of the lower lip 13 under the external air pressure and to separate from the liner 3 to form the air inlet gap 5, thereby realized admitting air fast to and eliminate the interior negative pressure of courage fast, shortened the latency that the user uncapped greatly, promoted user experience.

As shown in fig. 6 and 7, an example is given in which the thickness of the skirt portion 122 is completely uniform from top to bottom. In another example of the present invention, as shown in fig. 4, the free end of the upper lip 12 has a bulge 123, that is, the size of the end of the free end is increased, so that the deformation resistance of the skirt portion 122 is improved, and the bulge 123 can be maintained at a position of sealing abutment with the inner container 3 during heating and pressing, thereby preventing air leakage and increasing sealing performance. Of course, the shape and the top-down dimension of the skirt portion 122 are not limited to the embodiments shown in fig. 4, 6 and 7, and other shapes and dimensions can be used, for example, the thickness of the skirt portion 122 increases from top to bottom, which facilitates the sealing and the movement of the lower lip 13 under the external air pressure.

In the utility model discloses in, as shown in fig. 4, lower lip limit 13 has last sealing 131 and lower sealing 132, the one end of going up sealing 131 with sealing washer body 11 and/or go up lip limit 12 and link firmly, the other end with lower sealing 132 links firmly. Both the upper seal portion 131 and the lower seal portion 132 are used for contact sealing with the inner wall surface of the inner container 3. When the inner container 3 is heated to be pressed upwards in the inner container 3, the upper sealing part 132 and the lower sealing part 132 approach the inner wall surface of the inner container 3 under the action of the air pressure in the inner container 3, the preset gap 4 is eliminated, and finally the inner wall surface of the inner container 3 is tightly attached to realize sealing. After pressure relief is completed or heating is stopped for a period of time until the internal air pressure of the inner container 3 is basically equal to the external air pressure or less than the external air pressure, the upper sealing part and the lower sealing part are not affected by the acting force of the internal air pressure of the inner container 3 any more, the upper sealing part and the lower sealing part are gradually separated from the inner wall surface of the inner container 3 under the action of resilience force, meanwhile, the external air acts on the upper lip edge 12 and opens the air inlet gap 5, the entering of the external air accelerates the separation speed of the upper sealing part and the lower sealing part from the inner wall surface of the inner container 3, the preset gap 4 is reopened, the external air enters the inner container 3 through the air inlet gap 5 and the preset gap 4, negative pressure in the inner container is rapidly eliminated, and the phenomenon of sucking the.

In a specific example of the present invention, as shown in fig. 2 to 5, the annular bead is provided in the upper seal portion. In another specific example of the present invention, the annular bead is provided at a joint position of the upper seal portion and the lower seal portion. The utility model discloses in, the position that sets up of annular protruding muscle is favorable to when uncapping with the admission gap intercommunication is in order to form inlet channel, conveniently admits air.

As a preferred embodiment of the present invention, as shown in fig. 1 and 6, at least a partial region of the lower sealing portion 132 is inclined toward the center of the seal ring 1, and the inclined lower sealing portion 132 at least has the following functions: the demoulding of the sealing ring 1 after injection molding is convenient; in the process of fastening the pot cover 2, the lower sealing part 132 which is obliquely arranged is convenient to insert into the inner container 3, so that the covering process of the pot cover 2 is guided, and the user experience is improved; after pressure relief is completed or heating is stopped for a period of time until the internal air pressure of the inner container 3 is basically equal to the external air pressure or is smaller than the external air pressure, the acting force of the interior of the inner container 3 on the lower sealing portion 132 is eliminated, the lower sealing portion 132 can recover to the initial state before the lower sealing portion is not stressed under the action of self resilience force, and the lower sealing portion tilts towards the center direction of the sealing ring 1 in a natural state, so that the lower sealing portion 132 is conveniently separated from the inner container 3, the separation speed of the lower sealing portion and the inner container 3 is accelerated under the condition that external air enters, and air inlet is facilitated.

However, the utility model provides a sealing washer 1 is not restricted to and uses at the pressure cooker, and it can also be used to electric rice cooker to realize the sealed when heating, and the quick air inlet when uncapping.

The utility model can be realized by adopting or using the prior art for reference in places which are not mentioned in the utility model.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An anti-suction liner cooking appliance, comprising:

the pot body is internally provided with an inner container;

the pot cover, the pot cover through the pivot with the pot body is articulated, the sealing washer is installed to the pot cover, the sealing washer is including the sealing washer body and the lower lip limit that link to each other, the lower lip limit face to one side of inner bag be provided with can with the protruding muscle of internal face seal fit of inner bag, the protruding muscle of annular is being close to breach is seted up to one side of pivot.

2. The cooking appliance of claim 1, wherein the inner container is prevented from being sucked,

3. The cooking appliance of claim 1 or 2, wherein the inner container is prevented from being sucked,

4. The cooking appliance of claim 2, wherein the inner container is prevented from being sucked,

height H of the annular convex rib₁Satisfies the requirement that H is less than or equal to 0.1mm₁≦2mm；

Height H of the flow guide rib₂Satisfies the requirement that H is less than or equal to 0.1mm₂≦2mm。

5. The cooking appliance of claim 1, wherein the inner container is prevented from being sucked,

the sealing ring further comprises an upper lip edge, one end of the upper lip edge is fixedly connected with the sealing ring body and/or the lower lip edge, the other end of the upper lip edge is a free end, and a gap is formed between the upper lip edge and the lower lip edge;

when the cooker cover is in a state of buckling the cooker body, the upper lip edge is provided with a first position which is abutted against the inner container to seal the inner container and a second position which moves towards the lower lip edge to be separated from the inner container so as to form an air inlet gap between the upper lip edge and the inner container;

the gap is located below the free end of the upper lip.

6. The cooking appliance of claim 5, wherein the inner container is prevented from being sucked,

7. The cooking appliance of claim 1, wherein the inner container is prevented from being sucked,

8. The cooking appliance of claim 1, wherein the inner container is prevented from being sucked,

9. The cooking appliance of claim 1, wherein the inner container is prevented from being sucked,

the lower lip edge comprises an upper sealing part and a lower sealing part, one end of the upper sealing part is fixedly connected with the sealing ring body, one end of the lower sealing part is fixedly connected with the other end of the upper sealing part, and the other end of the lower sealing part is a free end;

the annular convex rib is arranged at the joint position of the upper sealing part or the upper sealing part and the lower sealing part.

10. The cooking appliance of claim 9, wherein the inner bladder is prevented from being sucked,