CN219962523U - Pressure cooking utensil - Google Patents

Abstract

The utility model discloses a pressure cooking utensil, which comprises an inner container, a heat preservation cover positioned at the outer side of the inner container and an electromagnetic heating device positioned below the inner container, wherein the heat preservation cover is provided with a pressure-bearing step, the pressure-bearing step is provided with a step surface, the step surface is provided with a supporting rib, the supporting rib abuts against and supports the inner container, and a gap is reserved between the step surface and the inner container. The inner container is placed inside the heat preservation cover and is contacted with the supporting ribs, and a gap is reserved between the inner container and the step surface of the pressure-bearing step. Thereby reducing the contact area of the liner and the heat preservation cover and reducing the risk of scratch or coating falling of the liner and the heat preservation cover. Because the area of contact between inner bag and the heat preservation cover has been reduced for frictional force between the two also reduces, when the pot cover lid closes the inner bag, the sealing washer of locating the pot cover can promote the inner bag and carry out the removal of a small circle, realizes the correction to the inner bag position, makes the inner bag remove to the position in the middle, thereby with the effective butt of sealing washer, guarantees that pressure cooking normally goes on.

Description

Pressure cooking utensil

Technical Field

The utility model belongs to the technical field of household appliances, and particularly relates to a pressure cooking appliance.

Background

The pressure cooking appliance generally comprises an inner container with a cooking cavity, a heat preservation cover arranged on the outer side of the inner container, a heating device arranged below the inner container and a pot cover with a sealing ring, wherein the pot cover is covered on the inner container. In order to obtain higher heating efficiency and heating uniformity, some models use an electromagnetic coil as a heating device to heat the liner by using an electromagnetic heating mode.

However, the fixing frame of the electromagnetic heating device is generally made of plastic materials, and has weak strength and cannot bear large pressure, so that a supporting structure is generally arranged on the heat insulation cover for supporting the inner container. When the inner container is in abutting contact with the supporting structure of the heat preservation cover, mutual friction can occur between the inner container and the supporting structure of the heat preservation cover, so that the inner container and/or the coating of the heat preservation cover are damaged, and even the base material of the inner container or the heat preservation cover is scratched. Meanwhile, the high temperature resistance of the heat preservation cover coating is poor, the temperature of the inner container is high in the cooking process, and heat can enable the coating in the contact area of the heat preservation cover and the inner container to be melted and bonded with the inner container, so that a user cannot take out the inner container easily.

Especially for the pressure cooking utensil, when the pressure in the cooking cavity risees, can push down the inner bag to make the effort between inner bag and the heat preservation cover bearing structure bigger, the contact is inseparabler, and then further aggravate wearing and tearing between the two and take place the possibility of bonding.

Meanwhile, the friction force between the inner container and the heat preservation cover is larger due to the fact that the contact area between the inner container and the heat preservation cover is larger, so that the position of the inner container is not easy to adjust, when the inner container is not placed in the middle, after the cover is covered, the sealing ring and the opening edge of the inner container cannot be aligned, the contact defect between the partial area of the sealing ring and the opening edge of the inner container is caused, the sealing performance is reduced, gas in the inner container can leak to the outside, the pot cannot be pressed up normally, and the normal operation of pressure cooking is affected.

Disclosure of Invention

The present utility model provides a pressure cooking appliance to solve at least one of the above technical problems.

The technical scheme adopted by the utility model is as follows:

the utility model provides a pressure cooking utensil, includes the inner bag, is located the heat preservation cover in the inner bag outside, and be located electromagnetic heating device of inner bag below, the heat preservation cover is provided with the pressure-bearing step, the pressure-bearing step has the step face, the step face is provided with the supporting rib, the supporting rib supports in the top the inner bag, the step face with have the clearance between the inner bag.

The pressure cooking appliance of the utility model is also characterized by the following accessories:

the supporting ribs are of annular structures so as to encircle the inner container; or, the supporting rib comprises a plurality of supporting parts, and the supporting parts are arranged at intervals along the circumferential direction of the liner so as to form a flow passage between the supporting parts.

The top of the supporting rib is provided with a contact cambered surface, and the contact cambered surface is abutted with the liner.

The step surface is horizontally arranged; alternatively, the step surface extends obliquely downward.

The pressure-bearing steps are multiple sections, the multiple sections of pressure-bearing steps are arranged at intervals along the circumferential direction of the heat preservation cover, mounting steps used for fixing the electromagnetic heating device are arranged between two adjacent sections of pressure-bearing steps, and the mounting steps are lower than the step surfaces.

The electromagnetic heating device comprises a wire coil and an electromagnetic coil wound on the wire coil, wherein fixing rib positions protruding outwards along the radial direction of the wire coil are arranged on the periphery of the wire coil, and the fixing rib positions are lapped on the mounting steps.

And one end of the pressure-bearing step, which faces the center of the inner container, is bent downwards to form a reinforcing wall, and the reinforcing wall surrounds the inner container.

The reinforcing wall surrounds the periphery of at least part of the area of the electromagnetic heating device.

The supporting ribs are protruding structures protruding upwards.

The side wall of the inner container is provided with a reducing part which is sunken towards the inner container, so that the inner space of the inner container is divided into a first cavity and a second cavity which is positioned below the first cavity, the inner diameter of the first cavity is larger than that of the second cavity, and the reducing part is lapped on the supporting rib.

By adopting the technical scheme, the utility model has the following beneficial effects:

1. the heat preservation cover is provided with the pressure-bearing step, and the step surface of the pressure-bearing step is also convexly provided with the supporting rib, so that the liner is contacted with the supporting rib after being placed in the heat preservation cover, and a gap is reserved between the liner and the step surface of the pressure-bearing step. Thereby reducing the contact area of the liner and the heat preservation cover, and reducing the risk of scratching or coating falling off of the liner and the heat preservation cover. Meanwhile, even if the coating of the heat preservation cover is heated and melted, the contact area of the heat preservation cover and the inner container is small, so that the bonding area is small, the bonding force between the heat preservation cover and the inner container is small, a user can separate the heat preservation cover and the inner container by using small force, and the use experience is improved.

In addition, because the area of contact between the inner bag with the heat preservation cover has been reduced for frictional force between the two also reduces, and when the pot cover lid closes the inner bag, the sealing washer of locating the pot cover can promote the inner bag overcome its with frictional force between the heat preservation cover carries out the removal of a small circle, realizes correcting to the inner bag position, makes the inner bag removes to the position in the middle, thereby with the effective butt of sealing washer the inner bag mouth forms the complete seal of round edge, guarantees that pressure cooking normally goes on.

Moreover, the gap is formed between the inner container and the step surface of the pressure-bearing step, so that the heat dissipation effect is improved, the heat transferred from the inner container to the heat insulation cover is reduced, the excessive temperature rise of the heat insulation cover is avoided, and the risk of melting the surface coating of the heat insulation cover is reduced. And the gap between the inner container and the pressure-bearing step also forms an air flow channel, when the pot body of the pressure cooking appliance is provided with a heat dissipation device, the air flow blown out of the pressure cooking appliance can flow through the gap, so that the cold air flow surrounds the inner container, heat dissipation of the inner container is accelerated, heat dissipation efficiency is improved, and quick depressurization is facilitated.

2. As a preferred embodiment of the present utility model, the support rib includes a plurality of support portions spaced apart along the circumferential direction of the inner container to form a flow passage between the support portions. The support rib is of a discontinuous multi-section structure, the contact area of the support rib and the inner container is further reduced, scraping and bonding are prevented, meanwhile, the flow passage can be formed between the two support parts, further air flow passing is further facilitated, air cooling is conveniently conducted on the inner container, and heat dissipation of the inner container is accelerated.

3. As a preferred embodiment of the utility model, the pressure-bearing step has a step surface which extends obliquely downward. The inclined step surface is arranged so that an included angle between the inclined step surface and the side wall of the heat preservation cover above the pressure-bearing step is an obtuse angle, thereby facilitating the cleaning of the corner by a user and avoiding the generation of sanitary dead angles. In addition, when the inner container is placed on the pressure-bearing step, due to the inclination of the step surface, the inner container can slide along the step surface under the action of self gravity, so that the inner container slides under the action of gravity to keep the central position of the heat preservation cover, and the axis coincidence of the inner container and the heat preservation cover is kept. And further, the pot cover sealing ring is well contacted with the opening edge of the inner container to form a circle of sealing, so that the sealing ring is prevented from being in poor contact with a part of the area of the opening edge of the inner container to cause air leakage.

4. As a preferred embodiment of the present utility model, the end of the pressure-bearing step toward the center of the inner container is bent downward to form a reinforcing wall, and the reinforcing wall surrounds the inner container. As the contact area of the heat preservation cover and the inner container is reduced, the pressure at the contact position of the inner container and the heat preservation cover is increased, and the pressure-bearing step is more easily deformed due to stress concentration. The reinforcing wall not only improves the beauty of the heat preservation cover, but also enables the integrity of the heat preservation cover to be better, has higher structural strength, and extends along the axis direction of the heat preservation cover, so that the heat preservation cover has better axial compression performance and can bear larger axial pressure, thereby reducing the risk of deformation caused by the pressure of the inner container. And the improvement of the strength makes the bottom of the heat preservation cover not easy to be round, thereby ensuring the stability of the structure.

5. In a preferred embodiment of the present utility model, the support rib has a convex structure protruding upward. The contact surface of the bump structure is an arc surface, so that the heat preservation cover is in point contact with the inner container, and the contact area of the inner container and the heat preservation cover is further reduced. Meanwhile, when the bump structure is worn or scratched, the contact area is small, so that the visual impact on a user is small, the appearance defect of the heat insulation cover is avoided, and the appearance quality is ensured.

Drawings

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

FIG. 1 is a schematic view of the heat-insulating cover according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the heat insulation cover according to another embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a partial area of the pressure cooking appliance according to an embodiment of the present utility model;

FIG. 4 is an enlarged view of area A of FIG. 3;

FIG. 5 is an enlarged view of region B of FIG. 3;

fig. 6 is a cross-sectional view of a partial area of the pressure cooking appliance according to another embodiment of the present utility model;

FIG. 7 is a schematic view showing an internal structure of the heat insulation cover according to an embodiment of the present utility model;

fig. 8 is a schematic structural view of the electromagnetic heating device according to an embodiment of the present utility model.

Wherein:

1, a heat preservation cover; 11 bearing steps; 111 supporting ribs; 112 through the flow channel; 113 step surface; 12 mounting steps; 13 reinforcing walls;

2, an inner container; 21 a diameter-variable portion; 22 a first cavity; 23 a second cavity;

3 an electromagnetic heating device; 31 wire coil; 311 fixing the rib position; 32 electromagnetic coils.

Detailed Description

In order to more clearly illustrate the general inventive concept, a detailed description is given below by way of example with reference to the accompanying drawings.

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

In addition, in the description of the present utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying 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 utility model.

In the present utility model, unless explicitly specified 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 above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, 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 utility model. 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 8, a pressure cooking appliance comprises a liner 2, a heat preservation cover 1 positioned on the outer side of the liner 2, and an electromagnetic heating device 3 positioned below the liner 2, wherein the heat preservation cover 1 is provided with a pressure-bearing step 11, the pressure-bearing step 11 is provided with a step surface 113, the step surface 113 is provided with a supporting rib 111, the supporting rib 111 supports against the liner 2, and a gap is reserved between the step surface 113 and the liner 2.

The heat preservation cover 1 is provided with the pressure-bearing step 11, and the step surface 113 of the pressure-bearing step 11 is also convexly provided with the supporting rib 111, so that after the liner 2 is placed in the heat preservation cover 1, the liner is contacted with the supporting rib 111, and a gap is reserved between the liner and the step surface 113 of the pressure-bearing step 11. Thereby reducing the contact area of the liner 2 and the heat preservation cover 1, and reducing the risk of scratching or coating falling off of the liner 2 and the heat preservation cover 1. Meanwhile, even if the coating of the heat preservation cover 1 is heated and melted, the contact area of the heat preservation cover and the liner 2 is small, so that the bonding area is small, and the bonding force between the heat preservation cover and the liner is small, so that a user can separate the heat preservation cover from the liner 2 by using small force, and the use experience is improved.

It can be understood that, in the process of closing the lid of the pressure cooking appliance, the sealing ring provided on the lid may form an ejecting force on the opening edge of the inner container 2, so the process of adjusting and correcting the position of the inner container 2 can be regarded as. Because the contact area between the inner container 2 and the heat preservation cover 1 is reduced, the friction force between the inner container 2 and the heat preservation cover is also reduced, when the inner container 2 is covered by the pot cover, the sealing ring arranged on the pot cover can push the inner container 2 to overcome the friction force between the inner container and the heat preservation cover 1 to move in a small range, the correction of the position of the inner container 2 is realized, the inner container 2 is enabled to move to a centered position, and is effectively abutted with the sealing ring, a circle of complete sealing is formed along the edge of the inner container 2, and the normal pressure cooking is ensured.

Moreover, a gap is formed between the inner container 2 and the step surface 113 of the pressure-bearing step 11, so that the heat dissipation effect is improved, the heat transferred from the inner container 2 to the heat insulation cover 1 is reduced, the excessive temperature rise of the heat insulation cover 1 is avoided, and the risk of melting the surface coating of the heat insulation cover 1 is reduced. And the gap between the inner container 2 and the pressure-bearing step 11 also forms a through-flow channel 112, when the cooker body of the pressure cooking appliance is provided with a heat dissipating device, the air flow blown out by the pressure cooking appliance can flow through the gap, so that the cold air flow surrounds the inner container 2, heat dissipation of the inner container 2 is accelerated, heat dissipation efficiency is improved, and rapid depressurization is facilitated.

For example, in one embodiment, the pressure cooker is further provided with a blower for blowing cold air flow into the heat-insulating cover 1, especially in the middle and later stages of cooking, where the moisture in the inner container 2 evaporates, and the food is easily stuck to the inner wall of the inner container 2. Through to the outside drum of inner bag 2 send cold air current for the temperature of inner bag 2 reduces fast, and then the inside high temperature steam of inner bag 2 with the temperature is lower inner bag 2 wall contact can the liquefaction fast, and then is in form the one deck water film between inner bag 2 inner wall and the food material, when increasing food material humidity, also can prevent food material with inner bag 2 inner wall direct contact, thereby play the non-stick effect. Therefore, the liner 2 can be designed into a coating-free structure, and a good non-stick effect can be ensured without coating a non-stick coating.

After the pressure cooking is finished, the inner container 2 is cooled by air cooling, so that the pressure in the inner container 2 is reduced rapidly, the uncovering time is shortened, and the use experience is improved.

The bearing position of the liner 2 is not limited by the bearing step 11, and may be one of the following embodiments:

embodiment one: in this embodiment, the bottom wall of the liner 2 is disposed on the pressure-bearing step 11, so that the pressure-bearing step 11 supports the bottom of the liner 2, and when the pressure in the liner 2 increases and moves downward, the pressure is transmitted to the pressure-bearing step 11 through the bottom of the liner 2.

Embodiment two: as a preferred embodiment, as shown in fig. 3, the sidewall of the inner container 2 is provided with a reducing portion 21 that cooperates with the bearing step 11, the supporting rib 111 supports the reducing portion 21, so as to transfer the bearing position from the bottom to the waist, and release the bottom space of the inner container 2, and as the bottom of the inner container 2 is further provided with the electromagnetic heating device 3, the temperature measuring member, etc., the bearing position is transferred to the waist, so that the internal structure of the cooking appliance is more reasonable, the space utilization is improved, and interference caused by concentrated arrangement of all components with the bottom of the inner container 2 is avoided.

Further, as shown in fig. 3, the sidewall of the liner 2 protrudes inward to form the diameter-variable portion 21, so as to divide the inner space of the liner 2 into a first cavity 22 and a second cavity 23 located below the first cavity 22, where the inner diameter of the first cavity 22 is greater than that of the second cavity 23, so that the liner 2 is of a diameter-variable structure, the overall wall thickness of the liner 2 is more uniform, the processing difficulty is reduced, and the liner 2 is uniformly heated.

Of course, the inner container 2 may be provided with a projection structure only on the outer wall to form the diameter-variable portion 21, which is not limited herein.

The structure of the supporting rib 111 is not limited in the present utility model, and may be one of the following embodiments:

embodiment one: in this embodiment, the supporting rib 111 has a ring structure to surround the liner 2. So as to form good support for the circumferential circle of the inner container 2 and improve the bearing stability.

Embodiment two: in this embodiment, as shown in fig. 1 and 2, the support rib 111 includes a plurality of support portions, and the support portions are disposed at intervals along the circumferential direction of the liner 2, so as to form a flow passage 112 between the support portions.

The supporting ribs 111 are of discontinuous multi-section structure, so that the contact area between the supporting ribs and the inner container 2 is further reduced, scraping and bonding are prevented, meanwhile, the flow passage 112 can be formed between the two supporting parts, further, air flow passing is further facilitated, air cooling and temperature reduction of the inner container 2 are facilitated, and heat dissipation and pressure reduction of the inner container 2 are accelerated.

Further, as shown in fig. 4, the top of the supporting rib 111 has a contact cambered surface, and the contact cambered surface abuts against the liner 2. The contact cambered surface enables the liner 2 to be in point contact or line contact with the supporting ribs 111, so that the contact area is further reduced, the possibility of scratching and bonding is reduced, and the appearance quality and performance are ensured.

The supporting ribs 111 may be bar-shaped ribs extending a certain length along the circumferential direction of the heat insulation cover 1 as shown in fig. 2, and in this case, the supporting ribs 111 are in line contact with the liner 2. The heat insulation cover can also be a bump structure shown in fig. 1, and the contact surface of the bump structure is an arc surface, so that the heat insulation cover 1 and the inner container 2 are in point contact, and the contact area of the inner container 2 and the heat insulation cover 1 is further reduced. Meanwhile, when the bump structure is worn or scratched, the contact area is small, so that the visual impact on a user is small, the appearance defect of the heat preservation cover 1 is avoided, and the appearance quality is ensured.

As a preferred embodiment of the present utility model, as shown in fig. 3, the pressure-bearing step 11 has a step surface 113, but the present utility model is not limited to the arrangement of the step surface 113, and may be one of the following embodiments:

embodiment one: in this embodiment, the step surface 113 is horizontally disposed to improve the stability of the support of the liner 2.

Embodiment two: as a preferred embodiment, as shown in fig. 3 and 4, the step surface 113 is disposed obliquely downward so as to form an angle with the horizontal plane. The inclined step surface 113 makes the included angle between the inclined step surface and the side wall of the heat preservation cover 1 above the pressure-bearing step 11 be an obtuse angle, which is convenient for a user to clean corners and avoids generating sanitary dead angles.

In addition, when the liner 2 is placed on the pressure-bearing step 11, due to the inclination of the step surface 113, the liner 2 will slide along the step surface 113 under the action of gravity, so that the liner 2 slides under the action of gravity to keep the central position of the heat-preserving cover 1, and the axis of the liner 2 coincides with the axis of the heat-preserving cover 1. And then make pot cover sealing washer with the good contact of inner bag 2 mouth edge forms the round and seals, prevent the sealing washer with the partial region in inner bag 2 mouth edge contact failure leads to the gas leakage.

Further, as shown in fig. 1, 2 and 7, the bearing steps 11 are multiple sections, the multiple sections of bearing steps 11 are arranged at intervals along the circumferential direction of the heat insulation cover 1, and an installation step 12 for fixing the electromagnetic heating device 3 is arranged between two adjacent sections of bearing steps 11, and the installation step 12 is lower than the step surface 113.

Specifically, as shown in fig. 7, the bearing steps 11 are provided with a plurality of concave portions along the circumferential direction of the heat insulation cover 1 at intervals, and the concave portions are recessed downwards to form the mounting steps 12, so that the compactness of the heat insulation cover 1 is improved, the overall height of the heat insulation cover 1 is reduced, and the overall miniaturization is facilitated.

However, in the present embodiment, the manner of fitting the electromagnetic heating device 3 to the mounting step 12 is not limited, and in one example, the electromagnetic heating device 3 is fixed to the lower side of the mounting step 12. In a preferred embodiment, as shown in fig. 5 and 8, the electromagnetic heating device 3 includes a wire coil 31 and an electromagnetic coil 32 wound around the wire coil 31, wherein a fixing rib 311 protruding radially outward is disposed on the outer periphery of the wire coil 31, and the fixing rib 311 is abutted against the mounting step 12, so that the fixing rib 311 is fixed on the upper side of the mounting step 12 in a matching manner.

When the electromagnetic heating device 3 is assembled, the fixing rib position 311 can be firstly abutted against the mounting step 12, so that the electromagnetic heating device 3 and the heat preservation cover 1 are positioned, the positioning mode is simple and convenient, the subsequent fixing operation is convenient, the assembly steps are optimized, the assembly difficulty is further reduced, and the assembly efficiency is improved. In addition, the heat preservation cover 1 with the connecting force of electromagnetic heating device 3 not only provides by the connecting piece, the installation step 12 also can be right fixed muscle position 311 plays the bearing effect to alleviate the atress of connecting piece, reduce the risk that the connecting piece damaged, improve electromagnetic heating device 3's connection stability.

Specifically, the assembly mode of the wire coil 31 is as follows: the wire coil 31 is placed into the heat insulation cover 1 from the top opening of the heat insulation cover 1, the fixing rib position 311 is made to be abutted against the mounting step 12, and then the fixing rib position 311 is fixedly connected with the mounting step 12 through screws or other fixing modes.

In the utility model, the forming manner of the pressure-bearing step 11 is not limited, and preferably, as shown in fig. 7, the side wall of the heat-insulating cover 1 is partially recessed inwards to form the pressure-bearing step 11, the heat-insulating cover 1 is of a reducing structure, the side wall of the heat-insulating cover 1 above the pressure-bearing step 11 encloses an upper cavity, the side wall of the pressure-bearing step 11 continues to extend downwards to enclose a lower cavity, and the diameter of the upper cavity is larger than that of the lower cavity.

Of course, the heat-insulating cover 1 may not be configured as a variable diameter structure with different diameters of the upper and lower cavities, and the pressure-bearing step 11 may be formed only by protruding in a partial area of the side wall.

In a preferred embodiment, as shown in fig. 7, an end of the pressure-bearing step 11 toward the center of the liner 2 is bent downward to form a reinforcing wall 13, and the reinforcing wall 13 surrounds the liner 2.

Because the contact area between the heat preservation cover 1 and the liner 2 is reduced, the pressure at the contact position of the liner 2 and the heat preservation cover 1 is increased, and the pressure-bearing step 11 is more easily deformed due to stress concentration. The reinforcing wall 13 not only improves the beauty of the heat preservation cover 1, but also enables the integrity of the heat preservation cover 1 to be better, has higher structural strength, and the reinforcing wall 13 extends along the axis direction of the heat preservation cover 1, so that the heat preservation cover has better axial compression performance and can bear larger axial pressure, thereby reducing the risk that the heat preservation cover 1 is deformed due to the pressure of the liner 2. And the improvement of the strength makes the bottom of the heat preservation cover 1 not easy to be round, thereby ensuring the stability of the structure.

In addition, the reinforcing wall 13 is located on one side of the bearing step 11 facing the center of the liner 2, so that on one hand, the reinforcing wall is closer to the center of the heat insulation cover 1, and therefore, the reinforcing wall can bear larger axial pressure, and further, the strength of the heat insulation cover 1 is improved, on the other hand, when the liner 2 is placed on the bearing step 11, particularly when the bearing step 11 is an inclined surface, as shown in fig. 3, the liner 2 can keep centering with the heat insulation cover 1 under the action of gravity, and at the moment, the pressure of the liner 2 on the bearing step 11 is concentrated on one end of the bearing step 11, which is close to the center of the liner 2, so that the reinforcing wall 13 is arranged at the end, the strength of the bearing step 11 can be remarkably improved, and the bearing stability of the liner 2 is ensured.

Moreover, because the reinforcing wall 13 promotes the overall strength of the heat-insulating cover 1, the thickness of the heat-insulating cover 1 can be reduced, the cost is reduced, the installation is convenient, the weight of the whole machine is reduced, and the heat-insulating cover is convenient for a user to take and put.

Specifically, as shown in fig. 7, a local area of the side wall of the heat-insulating cover 1 protrudes inward to form the pressure-bearing step 11, the pressure-bearing step 11 extends along the circumferential direction of the heat-insulating cover, the pressure-bearing step 11 is locally recessed downward to form the mounting step 12 in the circumferential direction of the pressure-bearing step 11, and one end of the pressure-bearing step 11 and the mounting step 12 toward the center of the liner 2 is bent downward and extends downward along the axis of the heat-insulating cover 1 to form the reinforcing wall 13.

Further, as shown in fig. 6, the reinforcing wall 13 surrounds the outer periphery of at least a part of the area of the electromagnetic heating device 3. The reinforced wall 13 not only can improve the structural strength of the bottom of the heat preservation cover 1, but also the reinforced wall 13 also surrounds the periphery of the electromagnetic heating device 3, so that the magnetic field generated by the electromagnetic heating device 3 is isolated in the space surrounded by the reinforced wall 13, the radiation protection effect is achieved, and the leakage of electromagnetic radiation is avoided.

Preferably, as shown in fig. 6, the lower edge of the reinforcing wall 13 is not higher than the lower edge of the electromagnetic heating device 3, and the reinforcing wall 13 has a circumferentially closed annular structure, so as to block electromagnetic radiation generated by the electromagnetic heating device 3 by 360 degrees.

The utility model can be realized by adopting or referring to the prior art at the places which are not described in the utility model.

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 utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.

Claims (10)

1. The pressure cooking utensil comprises an inner container, a heat preservation cover positioned at the outer side of the inner container and an electromagnetic heating device positioned below the inner container, and is characterized in that,

the heat preservation cover is provided with a pressure-bearing step, the pressure-bearing step is provided with a step surface, the step surface is provided with a supporting rib, the supporting rib supports the inner container in a propping mode, and a gap is reserved between the step surface and the inner container.

2. The pressure cooking appliance of claim 1, wherein the pressure cooker is configured to control the pressure of the air,

the supporting ribs are of annular structures so as to encircle the inner container; or,

the support rib comprises a plurality of support parts, and the support parts are arranged at intervals along the circumferential direction of the inner container so as to form a flow passage between the support parts.

3. The pressure cooking appliance of claim 2, wherein the pressure cooker is configured to control the pressure of the air,

the top of the supporting rib is provided with a contact cambered surface, and the contact cambered surface is abutted with the liner.

4. The pressure cooking appliance of claim 1, wherein the pressure cooker is configured to control the pressure of the air,

the step surface is horizontally arranged; alternatively, the step surface extends obliquely downward.

5. The pressure cooking appliance of claim 1, wherein the pressure cooker is configured to control the pressure of the air,

the pressure-bearing steps are multiple sections, the multiple sections of pressure-bearing steps are arranged at intervals along the circumferential direction of the heat preservation cover, mounting steps used for fixing the electromagnetic heating device are arranged between two adjacent sections of pressure-bearing steps, and the mounting steps are lower than the step surfaces.

6. The pressure cooking apparatus according to claim 5, wherein,

the electromagnetic heating device comprises a wire coil and an electromagnetic coil wound on the wire coil, wherein fixing rib positions protruding outwards along the radial direction of the wire coil are arranged on the periphery of the wire coil, and the fixing rib positions are lapped on the mounting steps.

7. The pressure cooking appliance of claim 1, wherein the pressure cooker is configured to control the pressure of the air,

and one end of the pressure-bearing step, which faces the center of the inner container, is bent downwards to form a reinforcing wall, and the reinforcing wall surrounds the inner container.

8. The pressure cooking appliance of claim 7, wherein the pressure cooker is configured to control the pressure of the air,

the reinforcing wall surrounds the periphery of at least part of the area of the electromagnetic heating device.

9. The pressure cooking appliance of claim 1, wherein the pressure cooker is configured to control the pressure of the air,

the supporting ribs are protruding structures protruding upwards.

10. The pressure cooking appliance of claim 1, wherein the pressure cooker is configured to control the pressure of the air,

the side wall of the inner container is provided with a reducing part which is sunken towards the inner container, so that the inner space of the inner container is divided into a first cavity and a second cavity which is positioned below the first cavity, the inner diameter of the first cavity is larger than that of the second cavity, and the reducing part is lapped on the supporting rib.