CN220571978U - Double-cavity pressure cooker - Google Patents

Abstract

The application discloses a double-cavity pressure cooker, including the pot body and pot cover, still including arranging the first inner bag of the internal portion of pot in and arranging the second inner bag in first inner bag, the pot cover is provided with sealing member and float valve, sealing member and the mouth edge butt seal of first inner bag, the lateral wall of first inner bag is provided with the supporting rib, the mouth edge of second inner bag has the flanging, the flanging is taken and is leaned on in the supporting rib to make the mouth edge of second inner bag and float valve between form first safety gap, the lateral wall of second inner bag is provided with limited food quantity sign, form the second safety gap between the mouth edge of food quantity sign and second inner bag, wherein, first safety gap is not less than the second safety gap. Through the dual guarantee of first safety clearance and second safety clearance, under the prerequisite that the food volume in the second inner bag is difficult to the certainty, can furthest leave sufficient inflation space for the food in the second inner bag, reduce the risk that food and float valve and sealing member take place to interfere.

Description

Double-cavity pressure cooker

Technical Field

The application belongs to the technical field of household appliances, and particularly relates to a double-cavity pressure cooker.

Background

An electric pressure cooker is a common kitchen appliance. However, the existing electric pressure cooker generally has only one cooking cavity, so that only one food can be cooked at a time, and thus, multiple cooking requirements of users cannot be met at the same time.

In recent years, some manufacturers add a container in the cooking cavity of the cooking appliance, so that the original cooking cavity of the cooking appliance and the interior of the container form a cavity respectively, and foods can be placed respectively and cooking can be performed simultaneously. For example, a steamer is additionally arranged in the inner container of the electric cooker so as to simultaneously cook and cook food in the cooker.

However, in the prior art, the container is generally placed on the opening edge of the inner container of the cooking utensil in a manner of being lapped or hung. In the case of a pressure cooker, the sealing performance and the exhaust performance in the cooking cavity are critical, and once the air leakage state occurs, the pressure in the cooker is difficult to rise, and a pressure environment cannot be formed. Therefore, the pot cover is provided with a sealing ring, and the sealing ring is abutted with the opening edge of the inner container to form a sealing environment inside the inner container after the pot cover is closed. Meanwhile, a float valve is also arranged for timely discharging cool air in the cooking cavity.

The float valve can float up and down under the promotion of the gas in the pot, in the initial stage of culinary art, the gas in the pot is less, and atmospheric pressure is lower, and the float valve falls under self gravity effect, opens the gas outlet on the pot cover, and along with the temperature rise in the pot this moment, the air conditioning in the pot also in time discharges through the gas outlet along with the pressure rise of temperature in the pot, and the gas promotes the float valve come-up and blocks up the gas outlet, and the pot is isolated with the external world this moment, gets into the procedure of pushing up, begins pressure cooking. After the cooking is finished and the pressure is relieved, the float valve falls down, and the user can open the pot cover at the moment.

However, because the container placed in the inner container is closer to the pot cover, the container has higher requirements on the food amount contained in the container, especially when the food is expanded, such as cooked rice, after the food is excessively expanded, the float valve on the pot cover can be pushed to float upwards to seal the air outlet after the food is expanded, so that the discharge of cold air in the pot is influenced, the pressure cooking efficiency is reduced, the float valve still cannot fall after the pressure release is finished, and the pot cover cannot be opened by a user under the limitation of the safety component on the pot cover, so that the normal use is influenced.

In addition, after the food in the container expands, the food is contacted with the pot cover and the sealing ring to form upward thrust, so that the sealing ring and the opening edge of the inner container are separated from sealing, gas leakage is caused, pressure is relieved, and normal pressure cooking is affected.

Moreover, for the pressure cooker, in the pressure cooking process, steam generated in a cooking cavity below the container can upwards surge to generate upward pushing force on the container, so that the container floats upwards. And because heating device directly heats the inner bag, the inside container of inner bag only can heat through the inside hot air current that is heated and produces of inner bag, consequently can make the inside food that is located the container below of inner bag heat the temperature rise faster, and the food in the container heats the temperature rise slower, just also lead to in the stage of initial stage of pressing up, the rate of pressure boost in the cavity below the container is compared in the rate of pressure boost of container inner space faster, there is pressure differential between two upper and lower cavitys, then can upwards promote the container under the atmospheric pressure effect, further aggravate the upward movement of container. Thereby making the container mouth edge and the food in the container mouth edge be closer to the float valve and the sealing ring, and further exacerbating the risks of sealing failure and float valve failure.

Disclosure of Invention

The application provides a double-cavity pressure cooker, which aims to solve at least one of the technical problems.

The technical scheme adopted by the application is as follows:

the utility model provides a double-cavity pressure cooker, includes the pot body and pot cover, still including arranging in the inside first inner bag of pot body and arrange in the second inner bag in the first inner bag, the pot cover is provided with sealing member and float valve, sealing member with the mouth edge butt seal of first inner bag, the lateral wall of first inner bag is provided with the supporting rib, the mouth edge of second inner bag has the turnup, the turnup is taken in the supporting rib, so that the mouth edge of second inner bag with form first safety gap between the float valve, the lateral wall of second inner bag is provided with limited quantity of food sign, limited quantity of food sign with form the second safety gap between the mouth edge of second inner bag, wherein, first safety gap is not less than the second safety gap.

The double-cavity pressure cooker has the following additional technical characteristics:

the support rib is positioned below the opening edge of the first inner container, so that a vertical gap is formed between the sealing piece and the opening edge of the second inner container, and the vertical gap forms a partial area of the first safety gap.

The cooker cover is matched with the first inner container to form a cooking cavity, the cooker cover is further provided with an exhaust pipe extending into the cooking cavity, a third safety gap is formed between the exhaust pipe and the opening edge of the first inner container, and the third safety gap is not smaller than the second safety gap.

The height of the bottom wall of the second liner gradually rises from the central area to the peripheral area so as to form a transitional cambered surface on the bottom wall of the second liner, and the axis of the float valve and the axis of the second liner are arranged in a staggered manner.

The external diameter of the outward flange is smaller than the internal diameter of the sealing element.

The inner diameter of the sealing piece is D, and the outer diameter of the flanging is D, wherein D-D is more than or equal to 3mm and less than or equal to 10mm.

A through-flow channel is arranged between the first inner container and the second inner container so as to enable the interior of the first inner container to be communicated with the interior of the second inner container; the side wall and/or the bottom wall of the second liner are/is provided with a through-flow port so as to form the through-flow channel; alternatively, the flow passage is formed between the support rib and the flange.

The height of the first liner is H1, and the height of the second liner is H2, wherein H1 is more than or equal to 1/3H 2 and is less than or equal to 1/2H1.

The lateral wall of first inner bag is in the below of supporting rib is provided with straight wall section, the second inner bag still includes the inner bag body, under the second inner bag tilt state, the inner bag body can with straight wall section backstop cooperation.

The sealing piece is provided with an abutting part which is in abutting sealing with the opening edge of the first inner container, and a sealing lip which extends into the first inner container from the opening edge of the first inner container, and the sealing lip is in abutting sealing with the inner wall of the first inner container.

Due to the adoption of the technical scheme, the beneficial effects obtained by the application are as follows:

1. the utility model provides a be provided with in the pot body first inner bag with the second inner bag, the second inner bag take lean on in on the supporting rib of first inner bag, in order respectively form a culinary art chamber in the upper and lower both sides of second inner bag, the user can first inner bag with food is placed respectively in the second inner bag, cooks simultaneously, improves user's culinary art convenience, improves use experience.

The side wall of this application the second inner bag is provided with food limit sign, thereby to the user to food in the second inner bag is put in and is played the suggestion effect, makes food in the second inner bag is not higher than food limit sign, thereby in the existence of second safety gap, for food inflation in the second inner bag is reserved enough allowance, second safety gap constitutes first guarantee, even food takes place to expand, also can not surpass the mouth edge of second inner bag, and the sealing member with the float valve all is located the top of second inner bag mouth edge, consequently food can not with the float valve and the sealing member takes place to contact, has guaranteed the position stability of sealing member, guarantees sealing performance, and the operational reliability of float valve, the float valve can freely float from top to bottom to facilitate the user and the uncap operation after the culinary art is finished.

In addition, the first safety gap is arranged between the opening edge of the second inner container and the float valve, the first safety gap is not smaller than the second safety gap, so that the first safety gap forms a second path of guarantee, even if a user does not put food according to the food limit mark, the second inner container is filled, so that the food is flush with the opening edge of the second inner container, and under the existence of the first safety gap, a space which is not smaller than the second safety gap is still reserved above the food for expansion of the food, and at the moment, the food still does not contact with the sealing piece and the float valve, so that the reliable pressure cooking is ensured.

2. As a preferred embodiment of the present application, the supporting rib is located below the opening edge of the first inner container, so that a vertical gap is formed between the sealing element and the opening edge of the second inner container, and the vertical gap forms a partial area of the first safety gap. The first inner container is used for bearing the support rib of second inner container is located the below of first inner container mouth edge, compares in the mode of leaning on the second inner container in first inner container mouth edge, has reduced the position height that the second inner container is located, makes the food bearing surface of second inner container is apart from the pot cover with the sealing member is farther, has increased first safety clearance, thereby has increased the second inner container holds food and food inflation's space, reduces when the second inner container moves up with the sealing member or the risk that the float valve takes place to interfere, guarantees the leakproofness in the pot.

3. As a preferred embodiment of the present application, the seal has an inner diameter D and the flange has an outer diameter D, wherein 3 mm.ltoreq.D-d.ltoreq.10 mm. Through with the internal diameter of sealing member with the difference of the external diameter of flanging sets up to 3mm, make the second inner bag vertically when upwards moving can not with the sealing member takes place to interfere, thereby can not be right the sealing member with the sealing of first inner bag mouth edge causes the influence, guarantees that the pressure cooking normally goes on. However, in the process of moving up the second liner, there may be a situation that the second liner is inclined, so that the second liner deviates from the axis of the first liner, and the lateral distance between the single side of the flanging and the sealing element is reduced, so that interference risk exists. Therefore, by setting the above difference to be larger than 3mm, the lateral distance between the flange and the sealing member is further enlarged by further reducing the outer diameter of the flange, so that even if the second liner is moved obliquely upward in an inclined state, interference with the sealing member does not occur, and the sealing property in the pot is ensured. In addition, the difference between the inner diameter of the sealing piece and the outer diameter of the flanging is not more than 10mm, the size of the second liner is guaranteed, the capacity of the second liner is further guaranteed, more food materials can be placed in the second liner, and the use experience is improved.

4. As a preferred implementation mode of the cooker cover and the first inner container are matched to form a cooking cavity, the cooker cover is further provided with an exhaust pipe extending into the cooking cavity, a third safety gap is formed between the exhaust pipe and the opening edge of the first inner container, and the third safety gap is not smaller than the second safety gap. The blast pipe is used for cooking and finishes back pot internal gas discharge to realize the exhaust pressure release, the blast pipe with exist between the mouth edge of second inner bag the third safety clearance just the third safety clearance is not less than the second safety clearance makes food in the second inner bag with also have great space between the blast pipe for food expands, and after the food expands, can not with the blast pipe contact, consequently the blast pipe can keep unblocked, thereby ensures that the pressure cooker can carry out the exhaust pressure release through the blast pipe, reduce food will the blast pipe blocks up and causes the unable risk of exhaust pressure release of pressure cooker.

5. As a preferred embodiment of the present application, a flow passage is provided between the first liner and the second liner, so that the inside of the first liner is communicated with the inside of the second liner. The air passage is communicated with the air passage inside the first inner container and the air passage inside the second inner container, the heating device of the pressure cooker is used for directly heating the first inner container, and hot air flow and steam generated by heating the inside of the first inner container can enter the inside of the second inner container through the air passage and are heated by contacting food in the second inner container. The arrangement of the flow passage is convenient for steam in the first inner container to timely enter the second inner container, so that the heating efficiency of food in the second inner container is improved, the temperature difference between the first inner container and the second inner container is reduced, and the uniformity of heating of the food in the two cavities is improved. And the balance of the air pressure in the two cavities is facilitated, and the condition that the second liner is pushed to shake under the action of pressure difference is reduced.

Drawings

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

FIG. 1 is a cross-sectional view of the dual-cavity pressure cooker in accordance with one embodiment of the present application;

FIG. 2 is a cross-sectional view of the dual cavity pressure cooker of FIG. 1 from another perspective;

FIG. 3 is a schematic view of the structure of the pot cover according to one embodiment of the present application;

FIG. 4 is a cross-sectional view of a portion of the dual-cavity pressure cooker in accordance with one embodiment of the present application, wherein the pot and the lid are not all shown;

FIG. 5 is a cross-sectional view of a portion of the dual-cavity pressure cooker in accordance with another embodiment of the present application, wherein the pot and lid are not all shown;

FIG. 6 is an enlarged view of area A of FIG. 1;

FIG. 7 is a cross-sectional view of the dual-chamber pressure cooker of FIG. 5 in an inclined state of the second bladder;

FIG. 8 is a cross-sectional view of the dual-chamber pressure cooker of FIG. 7 in a state in which the second bladder is inclined and floats;

FIG. 9 is a cross-sectional view of a portion of the dual chamber pressure cooker in accordance with another embodiment of the present application, wherein the pot and lid are not all shown;

FIG. 10 is a cross-sectional view of the second bladder according to one embodiment of the present application;

FIG. 11 is a schematic structural view of the second liner according to an embodiment of the present disclosure;

fig. 12 is a cross-sectional view of the pan body in one embodiment of the present application.

Wherein:

1, a first liner; 11 supporting ribs; 111 bearing surfaces; 12 straight wall sections;

2 a second liner; 21 flanging; 22 vertical gaps; 23 a liner body; 24 flow-through openings; 25 food limit marks; 26, transitional cambered surfaces;

3, sealing piece; 31 abutment; 32 a sealing lip;

4, a pot body;

a 5 pot cover; a 51 float valve; 52 exhaust pipe.

Detailed Description

In order to more clearly illustrate the general concepts of the present application, a detailed description is provided below by way of example in connection with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and thus the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it should be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," etc. indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, the descriptions of the terms "implementation," "embodiment," "one embodiment," "example," or "particular example" and the like 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 present application. In this specification, schematic representations of the above terms are not necessarily directed 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 12, a dual-cavity pressure cooker comprises a cooker body 4, a cooker cover 5, a first inner container 1 arranged in the cooker body 4, and a second inner container 2 arranged in the first inner container 1, wherein the cooker cover 5 is provided with a sealing element 3 and a float valve 51, the sealing element 3 is in butt joint with the opening edge of the first inner container 1, the side wall of the first inner container 1 is provided with a supporting rib 11, the opening edge of the second inner container 2 is provided with an outward flange 21, and the outward flange 21 is abutted against the supporting rib 11 so that a first safety gap is formed between the opening edge of the second inner container 2 and the float valve 51, namely L1 in fig. 1; the side wall of the second liner 2 is provided with a food limit mark 25, and a second safety gap, i.e. L2 in fig. 1, is formed between the food limit mark 25 and the edge of the second liner 2, wherein the first safety gap L1 is not smaller than the second safety gap L2.

The float valve 51 is configured to float up and down with respect to the lid 5 so as to have a floating position and a falling position, and the first safety gap is a gap between the opening edge of the second liner 2 and the float valve 51 when the float valve 51 is in the falling position in order to ensure normal movement and operation of the float valve 51.

Preferably, as shown in fig. 6, the sealing member 3 has an abutting portion 31 for abutting and sealing with the opening edge of the first liner 1, and a sealing lip 32 extending from the opening edge of the first liner 1 into the first liner 1, and the sealing lip 32 abuts and seals with the inner wall of the first liner 1. In the pressure cooking process, the pressure in the cooker is higher than the external pressure, and under the action of the internal and external pressure difference, the sealing lip 32 is pushed to swing outwards, so that the sealing lip is tightly attached to the inner wall of the first liner 1, and the sealing effect is improved.

The application be provided with in the pot body 4 first inner bag 1 with second inner bag 2, second inner bag 2 take lean on in on the support rib 11 of first inner bag 1, in order respectively form a culinary art chamber in the upper and lower both sides of second inner bag 2, the user can first inner bag 1 with food is placed respectively in the second inner bag 2, cooks simultaneously, improves user's culinary art convenience, improves the use experience.

It should be noted that the type of the second liner 2 is not limited, and for example, as shown in fig. 11, it may be a common basin-shaped container for holding food, and at this time, stewing and cooking may be performed in the first liner 1 and the second liner 2, or steaming may be performed in the second liner 2. For another example, the second inner container 2 is a steamer with an open bottom, so that the food in the second inner container 2 can be steamed by using the steam in the first inner container 1. In addition, the second liner 2 may also be a grease draining kettle, so that grease in the broth in the first liner 1 is collected and contained by the second liner 2, and grease-removing cooking is realized.

The float valve 51 can float up and down to control the on or off of the air outlet, and is used for judging the pressure state in the pot (when the float valve 51 floats up, the air outlet is closed, and the pressure state in the pot is indicated, at this moment, under the stop effect of the opening stopping structure, a user cannot open the cover), and food can push the float valve 51 upwards to enable the air outlet to be blocked, at this moment, the pressure cooker can recognize wrong pressure information in the pot, the user can be limited to open the cover under the pressureless state, and then under the stop of the opening stopping structure, the user cannot open the cover, and the use experience is affected.

As shown in fig. 1 and 10, the side wall of the second liner 2 in the present application is provided with the food limit mark 25, so as to play a role in prompting a user to throw food into the second liner 2, so that the food in the second liner 2 is not higher than the food limit mark 25, so that a sufficient margin is reserved for food expansion in the second liner 2 in the presence of the second safety gap, the second safety gap forms a first guarantee, even if the food expands, the food cannot exceed the opening edge of the second liner 2, and the sealing element 3 and the float valve 51 are both positioned above the opening edge of the second liner 2, therefore, the food cannot contact the float valve 51 and the sealing element 3, the position stability of the sealing element 3 is ensured, the sealing performance is ensured, the working reliability of the float valve 51 is ensured, the float valve 51 can float up and down freely, and the cover opening operation of the user after the end of cooking is convenient.

In addition, the first safety gap is arranged between the opening edge of the second liner 2 and the float valve 51, and is not smaller than the second safety gap, so that the first safety gap forms a second path of guarantee, even if a user does not put food according to the food limit mark 25, but fills the second liner 2 with food, so that the food is flush with the opening edge of the second liner 2, in the presence of the first safety gap, a space which is not smaller than the second safety gap is still reserved above the food for expansion, and at the moment, the food still does not contact the sealing element 3 and the float valve 51, so that pressure cooking is ensured to be reliably performed.

Through the double guarantee, on the premise that the food amount in the second liner 2 is difficult to determine, enough expansion space can be reserved for the food in the second liner 2 to the greatest extent, and the risk of interference between the food and the float valve 51 and the sealing element 3 is reduced.

It should be noted that the food limit mark 25 may be a mark line, a pattern, a text, or a combination thereof, in addition, the food limit mark 25 may be disposed on the side wall of the second liner 2 by etching or electroplating, or the food limit mark 25 may be formed by disposing a rib, a groove, or other structures, which is not specifically limited herein.

In this application, can confirm through the expansion volume of test food the size of second safety clearance, and then according to the numerical value of second safety clearance with the degree of depth of second inner bag 2 the suitable position of second inner bag 2 lateral wall sets up food limit amount identification 25, so that food limit amount identification 25 with the distance between the mouth edge of second inner bag 2 satisfies the second safety clearance. And then, the distance between the opening edge of the second liner 2 and the float valve 51, namely the first safety gap, is designed by taking the second safety gap as a reference standard, so that the distance is not smaller than the second safety gap, and the food is ensured not to interfere with the float valve 51 after expansion when the food is flush with the opening edge of the second liner 2.

As a preferred embodiment of the present application, as shown in fig. 6, the supporting rib 11 is located below the opening edge of the first liner 1, so that a vertical gap 22 is formed between the sealing element 3 and the opening edge of the second liner 2, and the vertical gap 22 forms a partial area of the first safety gap.

The first liner 1 is used for bearing the second liner 2 the supporting rib 11 is located the below of first liner 1 mouth edge, compared with the mode of leaning on the second liner on first liner mouth edge, reduced the position height that second liner 2 is located, increased first safety clearance makes the food bearing surface of second liner 2 is farther apart from pot cover 5 and sealing member 3, thereby has increased the space that second liner 2 holds food and food inflation reduces when second liner 2 moves up with sealing member 3 or the risk that float valve 51 takes place to interfere, guarantees the leakproofness in the pot. Meanwhile, the risk that food in the second liner 2 contacts with the pot cover 5 is reduced, and the cleaning of the pot cover 5 is ensured.

It will be appreciated that the vertical gap 22 and the vertical space between the seal 3 and the float valve 51 together form the first safety gap, and that during expansion of the food in the second liner 2, the vertical gap 22 is occupied first and then the vertical space between the seal 3 and the float valve 51 is occupied upwards. Thus increasing the vertical clearance 22 is equivalent to increasing the first safety clearance.

Preferably, as shown in fig. 2 and 3, the pot cover 5 and the first liner 1 are combined to form a cooking cavity, the pot cover 5 is further provided with an exhaust pipe 52 extending into the cooking cavity, and a third safety gap, i.e., L3 in fig. 2, is formed between the exhaust pipe 52 and the opening edge of the first liner 1, and is not smaller than the second safety gap.

The upper end of blast pipe 52 is provided with the weight, with blast pipe 52 is used for together the pressure release of pressure cooker, and in the pressure cooking process, the weight will blast pipe 52 shutoff the closed environment is formed in the culinary art intracavity, after the pressure cooking, lifts the weight through culinary art procedure automatic control or user manual operation, blast pipe 52 switches on, the gas in the culinary art intracavity can be through blast pipe 52 discharge, realizes the exhaust pressure release, and the convenience of customers uncaps. In order to ensure the normal operation of the venting, the end of the vent tube 52 extending into the cooking chamber must be kept conductive and not be blocked by food.

In this embodiment, the third safety gap exists between the exhaust pipe 52 and the opening edge of the second liner 2, and the second safety gap is also taken as a reference, and the third safety gap is not smaller than the second safety gap, so that a larger space is also provided between the food in the second liner 2 and the exhaust pipe 52 for expanding the food, and after the food expands, the food does not contact with the exhaust pipe 52, therefore, the exhaust pipe 52 can be kept smooth, thereby ensuring that the pressure cooker can release the pressure by exhausting the air through the exhaust pipe 52, and reducing the risk that the pressure cooker cannot release the pressure by blocking the exhaust pipe 52 by the food.

The magnitude relation between the first safety gap and the third safety gap is not limited, and may be the same or different. That is, the bottom surface of the float valve 51 may be flush with the bottom surface of the exhaust pipe 52, may be higher than the bottom surface of the exhaust pipe 52, or may be lower than the bottom surface of the exhaust pipe 52 when the float valve is in the lowered position.

In a preferred embodiment, as shown in fig. 2 and fig. 4, the height of the bottom wall of the second liner 2 gradually increases from the central area to the peripheral area, so as to form a transitional cambered surface 26 on the bottom wall of the second liner 2, and the axis of the float valve 51 and the axis of the second liner 2 are arranged in a staggered manner.

The position of the central area of the second liner 2 is lower than that of the peripheral area, so that food in the second liner 2 can be more concentrated in the central area of the second liner 2, therefore, the expansion amount of the food at the center of the second liner 2 is larger, the expansion amount of the peripheral area is smaller, and a certain allowance can be provided for the expansion of the food at the center due to the lower position of the center, and the heights of the food protrusion and the mouth edge of the second liner 2 are reduced. And the axis of the float valve 51 and the axis of the second liner 2 are offset, so that the projection of the float valve 51 towards the second liner 2 is not positioned at the center of the second liner 2, and the food amount is smaller and the expansion amount is smaller, thus the probability that the float valve 51 is blocked by the expansion of the food can be reduced.

Moreover, the outer side surface of the bottom wall of the second liner 2 is also provided with the transition cambered surface 26, so that when hot air and steam inside the first liner 1 upwards surge, the contact with the bottom wall of the second liner 2 can be guided by the transition cambered surface 26, so that the air flow is dispersed to the periphery, the stress of the second liner 2 is relieved, the shaking generated by the pushing of the second liner 2 by the air flow and the upward floating are reduced, the position stability of the second liner 2 is ensured, and the space above the second liner 2 is further ensured.

As a preferred embodiment of the present application, the external diameter of the flange 21 is smaller than the internal diameter of the seal 3, as shown in fig. 5.

It will be appreciated that during the upward movement of the second liner 2, the flange 21 will interfere with the sealing lip 32, so that under the upward pushing of the flange 21, the sealing lip 32 will swing inwards to reduce the abutment force with the inner wall of the first liner 1, and even separate from the first liner 1, thereby affecting the sealing effect.

In this application, the external diameter of outward flange 21 is less than the internal diameter of sealing member 3, because sealing member 3 is located the outside of outward flange 21, the outward flange 21 with the interior edge of sealing member 3 is in dislocation on the axis direction of first inner bag 1, and have great transverse distance between the two, consequently work as second inner bag 2 receives thrust and vertical upward movement, can not with sealing member 3 takes place to interfere, and then can guarantee sealing member 3 with the good seal of first inner bag 1 mouth edge avoids taking place the skew under the push of outward flange 21 and leads to the condition of sealing failure.

As a preferred embodiment of the present application, as shown in FIG. 5, the inner diameter of the seal member 3 is D, and the outer diameter of the flange 21 is D, wherein 3 mm.ltoreq.D-d.ltoreq.10 mm.

By setting the difference between the inner diameter of the sealing element 3 and the outer diameter of the flanging 21 to be 3mm, the second liner 2 cannot interfere with the sealing element 3 when moving vertically upwards, so that the sealing of the sealing element 3 and the opening edge of the first liner 1 cannot be influenced, and the normal cooking of the pressure in the cooker is ensured.

However, the thrust force of the air pressure and the steam acting on the second liner 2 may not be uniform, that is, the second liner 2 may not remain in a horizontal state and float up smoothly during the upward movement, but there may be a possibility that the second liner 2 is inclined to move in an inclined upward path, so that the second liner 2 deviates from the axis of the first liner 1, the lateral distance between the one side of the flange 21 and the sealing member 3 is reduced, and there is a risk of interference. For example, as shown in fig. 7 and 8, when the second liner 2 is in an inclined state in which the right side is higher than the left side, the upward movement path of the second liner 2 is not vertically upward but moves toward the upper left, which results in a decrease in the lateral distance between the left side of the burring 21 and the seal 3, with a risk of interference.

Therefore, by setting the above difference to be greater than 3mm, the lateral distance between the burring 21 and the sealing member 3 is further enlarged by further reducing the outer diameter of the burring 21, so that even if the second liner 2 is moved obliquely upward in an inclined state, interference with the sealing member 3 does not occur, ensuring the in-pot sealability.

In addition, the difference between the inner diameter of the sealing element 3 and the outer diameter of the flanging 21 is not more than 10mm, the size of the second liner 2 is ensured on the premise that the caliber of the first liner 1 is unchanged, and then the capacity of the second liner 2 is ensured, so that more food materials can be placed, and the use experience is improved.

As a preferred embodiment of the present application, a flow passage is provided between the first liner 1 and the second liner 2, so that the inside of the first liner 1 is communicated with the inside of the second liner 2.

The air passage is communicated with the air passage inside the first inner container 1 and the air passage inside the second inner container 2, the heating device of the pressure cooker is used for directly heating the first inner container 1, and hot air and steam generated by heating the inside of the first inner container 1 can enter the inside of the second inner container 2 through the air passage and are heated by contacting with food in the second inner container 2. The arrangement of the flow passage is convenient for steam in the first inner container 1 to timely enter the second inner container 2, so that the heating efficiency of food in the second inner container 2 is improved, the temperature difference between the first inner container 1 and the second inner container 2 is reduced, and the uniformity of heating of the food in the two cavities is improved. And the balance of the air pressure in the two cavities is facilitated, and the condition that the second liner 2 is pushed to shake under the action of pressure difference is reduced.

The formation manner of the flow passage is not limited in this embodiment, and may be one of the following examples:

example 1: in this embodiment, as shown in fig. 11 to 12, the side wall and/or the bottom wall of the second liner 2 is provided with a through-flow port 24 to form the through-flow channel.

Example 2: in this embodiment, the flow passage is formed between the support rib 11 and the burring 21.

In a specific example of this embodiment, the supporting rib 11 has a supporting portion protruding inward along the radial direction of the first liner 1 and an avoidance portion recessed outward along the circumferential direction of the first liner 1, where the supporting portion is used for supporting the outward flange 21, and the avoidance portion is not in contact with the outward flange 21, and forms the flow passage therebetween.

In another specific example of this embodiment, a protrusion is provided on a partial area of the bearing surface of the supporting rib 11, so that the partial area of the outward flange 21 is abutted against the protrusion to raise the second liner 2 by a certain height, and a gap exists between the partial area and the bearing surface, and the gap forms the flow passage.

As a preferred embodiment of the present application, as shown in fig. 5 and 6, a partial area of the side wall of the first liner 1 is recessed toward the inside to form the supporting rib 11, so that the overall wall thickness of the first liner 1 is more uniform, the processing difficulty is reduced, and the first liner 1 is uniformly heated.

Of course, the side wall of the first liner 1 may be partially thickened to form the support rib 11 on the inner side thereof, which is not limited herein.

Further, as shown in fig. 6, the supporting rib 11 has a supporting surface 111 for supporting the outward flange 21, and the supporting surface 111 extends obliquely downward so that an angle is formed between the supporting surface 111 and a horizontal plane.

The bearing surface 111 that the slope set up makes its with the contained angle that first inner bag 1 is located between the lateral wall of supporting rib 11 top is the obtuse angle, has made things convenient for the user to clean the corner, avoids producing the health dead angle. In addition, when the second liner 2 is placed on the supporting rib 11, due to the inclination of the bearing surface 111, the second liner 2 will slide along the bearing surface 111 under the action of its own weight, so that the second liner 2 slides under the action of gravity to keep the first liner 1 in a centered position, and the axis of the second liner 2 coincides with the axis of the first liner 1.

As a preferred embodiment of the present application, as shown in FIG. 9, the height of the first liner 1 is H1, and the height of the second liner 2 is H2, wherein 1/3H1 is equal to or less than H2 is equal to or less than 1/2H1.

The greater the height of the second liner 2 is, the deeper the depth of the food material accommodating space inside the second liner 2 is, which means that under the condition that the second safety gap is unchanged, the second liner 2 can accommodate more food, and the greater the distance between the food bearing surface and the pot cover 5 is, so that the risk of interference between the food and the pot cover 5 can be reduced.

However, since the second liner 2 is disposed inside the first liner 1, the higher the second liner 2, the larger the second liner 2 occupies the space in the first liner 1, that is, the smaller the capacity of the first liner 1, the lower portion of the second liner 2 may be immersed into the food in the first liner 1 during cooking, and the soup in the first liner 1 may boil into the second liner 2, so that the smell may be tainted.

Therefore, in this embodiment, the height of the second liner 2 is designed to be 1/3 to 1/2 of the height of the first liner 1, so that when the second liner 2 is inclined, as shown in fig. 9, the bottom of the second liner 2 and the inner side wall of the first liner 1 are stopped, thereby limiting the inclination angle of the second liner 2 and avoiding the second liner 2 from tipping over or scattering and leaking internal food on the basis of ensuring the capacity of the first liner 1 and the second liner 2.

Preferably, as shown in fig. 9, a straight wall section 12 is disposed on the side wall of the first liner 1 below the supporting rib 11, the second liner 2 further includes a liner body 23, and in an inclined state of the second liner 2, the liner body 23 can be in stop fit with the straight wall section 12. The straight wall section 12 can improve the stability of stopping with the second liner 2, has a good limiting effect on the second liner 2, limits the inclination angle of the second liner, and improves the stability.

Of course, as shown in fig. 5 and 12, the first liner 1 may be a spherical liner, that is, the side wall of the first liner 1 is an arc wall below the supporting rib 11, so as to improve the heating uniformity of the first liner 1.

The non-mentioned places in the application can be realized by adopting or referring to the prior art.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims (10)

1. The double-cavity pressure cooker comprises a cooker body, a cooker cover, a first liner arranged in the cooker body, a second liner arranged in the first liner, a sealing element and a float valve, wherein the sealing element is in butt joint with the opening edge of the first liner and is sealed,

the side wall of the first inner container is provided with a supporting rib, the opening edge of the second inner container is provided with an outward flange, the outward flange is lapped on the supporting rib, so that a first safety gap is formed between the opening edge of the second inner container and the float valve, the side wall of the second inner container is provided with a food limit mark, a second safety gap is formed between the food limit mark and the opening edge of the second inner container, and the first safety gap is not smaller than the second safety gap.

2. The dual-cavity pressure cooker as claimed in claim 1, wherein,

the support rib is positioned below the opening edge of the first inner container, so that a vertical gap is formed between the sealing piece and the opening edge of the second inner container, and the vertical gap forms a partial area of the first safety gap.

3. The dual-cavity pressure cooker as claimed in claim 1, wherein,

the cooker cover is matched with the first inner container to form a cooking cavity, the cooker cover is further provided with an exhaust pipe extending into the cooking cavity, a third safety gap is formed between the exhaust pipe and the opening edge of the first inner container, and the third safety gap is not smaller than the second safety gap.

4. The dual-cavity pressure cooker as claimed in claim 1, wherein,

the height of the bottom wall of the second liner gradually rises from the central area to the peripheral area so as to form a transitional cambered surface on the bottom wall of the second liner, and the axis of the float valve and the axis of the second liner are arranged in a staggered manner.

5. The dual-cavity pressure cooker as claimed in claim 1, wherein,

the external diameter of the outward flange is smaller than the internal diameter of the sealing element.

6. The dual-cavity pressure cooker as claimed in claim 5, wherein,

the inner diameter of the sealing piece is D, and the outer diameter of the flanging is D, wherein D-D is more than or equal to 3mm and less than or equal to 10mm.

7. The dual-cavity pressure cooker as claimed in claim 1, wherein,

a through-flow channel is arranged between the first inner container and the second inner container so as to enable the interior of the first inner container to be communicated with the interior of the second inner container;

the side wall and/or the bottom wall of the second liner are/is provided with a through-flow port so as to form the through-flow channel; or,

the support rib and the flanging form the through-flow channel.

8. The dual-cavity pressure cooker as claimed in claim 1, wherein,

the height of the first liner is H1, and the height of the second liner is H2, wherein H1 is more than or equal to 1/3H 2 and is less than or equal to 1/2H1.

9. The dual-cavity pressure cooker as claimed in claim 8, wherein,

the lateral wall of first inner bag is in the below of supporting rib is provided with straight wall section, the second inner bag still includes the inner bag body, under the second inner bag tilt state, the inner bag body can with straight wall section backstop cooperation.

10. The dual-cavity pressure cooker as claimed in any one of claims 1 to 9, wherein,

the sealing piece is provided with an abutting part which is in abutting sealing with the opening edge of the first inner container, and a sealing lip which extends into the first inner container from the opening edge of the first inner container, and the sealing lip is in abutting sealing with the inner wall of the first inner container.