CN108244998B

CN108244998B - Electric pressure cooker

Info

Publication number: CN108244998B
Application number: CN201611241081.XA
Authority: CN
Inventors: 王本新; 李欢欢; 蔡何意
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2016-12-28
Filing date: 2016-12-28
Publication date: 2024-01-19
Anticipated expiration: 2036-12-28
Also published as: CN108244998A

Abstract

The invention provides an electric pressure cooker, comprising: the cooker body (10) is used for containing food to be cooked, and a heating device is arranged in the cooker body (10); the pot cover (20) is arranged on the pot body (10), the pot cover (20) comprises an upper cover and an inner cover (22), a movable pressure limiting valve (30) is arranged on the inner cover (22), a driving device (40) for driving the pressure limiting valve (30) to open is arranged on the upper cover, and when the inner cover (22) is assembled on the upper cover, the pressure limiting valve (30) is sunk under the gravity to avoid a driving ejector rod (41) of the driving device (40). The technical scheme of the invention can effectively solve the problem that the ejector rod of the driving device is easy to interfere with the pressure limiting valve during the assembly of the pot cover in the prior art.

Description

Electric pressure cooker

Technical Field

The invention relates to an electric pressure cooker, in particular to an improvement of a pressure limiting valve and a driving device of the electric pressure cooker.

Background

With the improvement of the living standard of people, the electric pressure cooker is increasingly widely applied as a substitute product of the traditional pressure cooker and is loved by consumers. In the prior art, as shown in fig. 1, a pot cover of an electric pressure cooker comprises an inner liner and an inner cover, wherein a pressure limiting valve 1 is arranged on the inner cover, a driving device 2 for driving the pressure limiting valve 1 to open is arranged on the inner liner, and the distance from a push rod 3 of the driving device 2 to the rear end of the pot cover is smaller than the distance from a driving piece 4 of the pressure limiting valve 1 to the rear end of the pot cover. In the pot cover assembling process, the pot cover is in an open state, and the ejector rod 3 of the driving device 2 extends all the time. When the inner cover is assembled on the lining, the driving piece 4 is positioned above the ejector rod 3, so that the ejector rod 3 is easy to interfere and clamp with the pressure limiting valve 1 and the driving piece 4, the pressure limiting valve 1 is not reset, and the pressure cooker is easy to leak air and overflow pulp in a working state.

Disclosure of Invention

The invention mainly aims to provide an electric pressure cooker, which solves the problem that a push rod of a driving device is easy to interfere with a pressure limiting valve during assembly of a cooker cover in the prior art.

In order to achieve the above object, the present invention provides an electric pressure cooker including: the cooker body is used for containing food to be cooked, and a heating device is arranged in the cooker body; the pot cover is arranged on the pot body and comprises an upper cover and an inner cover, a movable pressure limiting valve is arranged on the inner cover, a driving device for driving the pressure limiting valve to open is arranged on the upper cover, and when the inner cover is assembled on the upper cover, the pressure limiting valve is sunk by gravity to avoid a driving ejector rod of the driving device.

By applying the technical scheme of the invention, the movable pressure limiting valve is arranged on the inner cover, and the driving device for driving the pressure limiting valve to open is arranged on the upper cover. When the inner cover is required to be assembled on the upper cover, the upper cover is in an open state, and at the moment, the driving ejector rod of the driving device stretches out. In the assembly process, the pressure limiting valve is sunk under the gravity, so that the pressure limiting valve cannot be contacted with the driving ejector rod in the whole assembly process, and the driving ejector rod of the driving device is avoided, and interference clamping between the driving ejector rod and the pressure limiting valve is prevented. When the inner cover is assembled and the cover is closed, the driving ejector rod is retracted, and a gap is reserved between the driving ejector rod and the pressure limiting valve. The structure is convenient for the assembly of the inner cover and the upper cover, and prevents the driving ejector rod and the pressure limiting valve from being interfered and blocked in the assembly process, thereby preventing the pressure limiting valve from not resetting and preventing leakage and slurry overflow under the working state.

Further, the distance from the center of the pressure limiting valve to the rear end of the pot cover is smaller than the distance from the center of the driving device to the rear end of the pot cover, so that the driving device avoids the outer edge of the pot cover and is assembled on the pot cover.

Further, a driving piece matched with the driving ejector rod is arranged on the circumferential outer surface of the pressure limiting valve, and when the inner cover is assembled on the upper cover, the driving piece is positioned below the driving ejector rod.

Further, when the inner cap is fitted to the upper cap, the driving means is located above the side of the pressure limiting valve.

Further, an inclined portion is provided on the circumferential outer surface of the pressure limiting valve, and a recess-avoiding portion recessed in the extending direction of the driving ejector rod is formed between the driving piece and the inclined portion.

Further, the upper part of the pressure limiting valve is a frustum, and the circumferential outer surface of the frustum forms an inclined part.

Further, the frustum comprises a first frustum and a second frustum which are sequentially connected from top to bottom, and the angle between the rotation generatrix of the first frustum and the axial direction of the pressure limiting valve is larger than the angle between the rotation generatrix of the second frustum and the axial direction of the pressure limiting valve.

Further, the driving piece is arranged to extend in the radial direction of the pressure limiting valve.

Further, the upper cover comprises a face cover and a lining which are sequentially arranged from top to bottom, the driving device is arranged on the lining, a mounting hole for penetrating the pressure limiting valve is formed in the lining, and when the inner cover is assembled on the lining, the pressure limiting valve penetrates through the mounting hole to the lining.

Further, the upper cover is provided with a pressure limiting valve seat, when the inner cover is assembled on the upper cover, the pressure limiting valve is mounted on the pressure limiting valve seat, the circumferential side wall of the pressure limiting valve seat is provided with a limiting notch, and the driving piece is positioned in the limiting notch.

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 invention. In the drawings:

fig. 1 shows a schematic structure of a pressure limiting valve and a driving device of an electric pressure cooker in the prior art;

fig. 2 shows a schematic structural view of a first embodiment of an electric pressure cooker according to the invention;

fig. 3 shows a schematic cross-sectional view of the electric pressure cooker of fig. 2;

fig. 4 shows an exploded view of the electric pressure cooker of fig. 2 before assembly;

FIG. 5 shows an enlarged schematic view of an inner cover of the electric pressure cooker of FIG. 4 at A;

fig. 6 shows a schematic structural view of the electric pressure cooker of fig. 2 after assembly;

fig. 7 shows an enlarged schematic view at B of the electric pressure cooker of fig. 6;

fig. 8 shows a schematic structural view of an inner cover, a pressure limiting valve and a driving device of the electric pressure cooker of fig. 6;

fig. 9 shows a schematic perspective view of the electric pressure cooker of fig. 2;

fig. 10 shows a schematic structural view of an inner cover, a pressure limiting valve and a driving device of a second embodiment of an electric pressure cooker according to the present invention; and

fig. 11 shows an enlarged schematic view of the electric pressure cooker of fig. 10 at C.

Wherein the above figures include the following reference numerals:

1. a pressure limiting valve; 2. a driving device; 3. a push rod; 4. a driving plate; 10. a pot body; 20. a pot cover; 21. a lining; 22. an inner cover; 23. a mounting hole; 24. a pressure limiting valve seat; 241. limiting notch; 30. a pressure limiting valve; 31. a driving plate; 32. a frustum; 321. a first frustum; 322. a second frustum; 40. a driving device; 41. and driving the ejector rod.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

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

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

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

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

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

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

As shown in fig. 2 to 9, the electric pressure cooker of the first embodiment includes a cooker body 10 and a cooker cover 20. Wherein, the pot body 10 is used for containing food to be cooked, and a heating device is arranged in the pot body 10. The pot cover 20 is covered on the pot body 10. The lid 20 includes an upper lid and an inner lid 22. The inner cap 22 is provided with a pressure limiting valve 30 which is removable and movable after assembly. The upper cover is provided with a driving device 40 for driving the pressure limiting valve 30 to open. When the inner cap 22 is assembled to the upper cap, the pressure limiting valve 30 is sunk (integrally sunk or tilted) by gravity to avoid the driving jack 41 of the driving device 40.

With the electric pressure cooker of the embodiment, the movable pressure limiting valve 30 is arranged on the inner cover 22, and the driving device 40 for driving the pressure limiting valve 30 to open is arranged on the upper cover. When it is desired to fit the inner lid 22 to the upper lid, the upper lid is in an open state. A connecting rod structure is connected to the handle mounting part in the middle of the upper cover, and one end of the connecting rod structure, which is far away from the handle mounting part, is matched with the rear end of the driving ejector rod 41 of the driving device 40. When the upper cover is in an opened state, the handle mounting portion pushes the driving jack 41 forward through the link structure, and the driving jack 41 of the driving device 40 protrudes. In the assembly process, the pressure limiting valve 30 is sunk (integrally sunk or inclined) by gravity, so that the pressure limiting valve 30 cannot contact with the driving ejector rod 41 in the whole assembly process, so as to avoid the driving ejector rod 41 of the driving device 40, and further prevent the driving ejector rod 41 from being blocked by interference with the pressure limiting valve 30. When the inner lid 22 is assembled and the lid 20 is closed, the driving push rod 41 is retracted under the action of the return spring provided at the rear end, and a gap is provided between the driving push rod 41 and the pressure limiting valve 30. The structure is convenient for the assembly of the inner cover and the upper cover, and prevents the driving ejector rod and the pressure limiting valve from being interfered and blocked in the assembly process, thereby preventing the pressure limiting valve from not resetting and preventing leakage and slurry overflow under the working state.

As shown in fig. 6 to 8, in the electric pressure cooker of the first embodiment, the distance from the center of the pressure limiting valve 30 to the rear end of the cover 20 is smaller than the distance from the center of the driving device 40 to the rear end of the cover 20. That is, when the inner cap 22 is assembled to the upper cap, the upper cap is in an open state, the center of the driving device 40 is above the center of the pressure limiting valve 30, and the pressure limiting valve 30 is sunk (sunk or tilted as a whole) due to gravity, so that the pressure limiting valve 30 can be moved in a direction away from the driving device 40, and the pressure limiting valve 30 cannot contact with the driving jack 41 during the whole assembly process, so that the driving jack 41 of the driving device 40 is avoided, and interference jamming between the driving jack 41 and the pressure limiting valve 30 is prevented. When the inner cover 22 is assembled and the pot cover 20 is closed, the pressure limiting valve 30 is reset, the driving ejector rod 41 is retracted under the action of a reset spring arranged at the rear end, and a gap is reserved between the driving ejector rod 41 and the pressure limiting valve 30. In addition, in consideration of the limited assembly space on the pot cover 20, the center of the driving device 40 is arranged above the center of the pressure limiting valve 30, so that the installation position of the driving device 40 can be moved upwards, the driving device 40 can be assembled on the pot cover 20 avoiding the outer edge of the pot cover 20, the assembly and the arrangement of the driving device 40 are more convenient, and the assembly space of the pot cover 20 is reasonably applied.

In the present embodiment, the driving device 40 is a solenoid valve, and the center of the driving device 40 is located above the center of the pressure limiting valve 30, so that the pressure limiting valve 30 is submerged by gravity to avoid the driving jack 41 of the driving device 40. Of course, the positional relationship between the driving device 40 and the pressure limiting valve 30 is not limited thereto, and in other embodiments not shown in the drawings, the driving device may be located below the pressure limiting valve (the distance from the center of the pressure limiting valve to the rear end of the pot cover is greater than the distance from the center of the driving device to the rear end of the pot cover), and the portion where the pressure limiting valve is matched with the driving ram of the driving device is provided with a recess for avoiding, so that when the inner cover is assembled on the upper cover, the pressure limiting valve is sunk by gravity, so that the front end of the driving ram is just placed in the recess for avoiding the front end of the driving ram, that is, the recess for avoiding the interference and jamming of the driving ram and the pressure limiting valve. In addition, the driving device and the pressure limiting valve can be arranged in a flush manner (the distance from the center of the pressure limiting valve to the rear end of the pot cover is equal to the distance from the center of the driving device to the rear end of the pot cover), so long as the driving ejector rod of the driving device can be avoided when the pressure limiting valve is submerged under the gravity.

As shown in fig. 4 to 8, in the electric pressure cooker of the first embodiment, the drive piece 31 that cooperates with the drive jack 41 is provided on the circumferential outer surface of the pressure limiting valve 30. When the inner lid 22 is assembled to the upper lid, the upper lid is in an open state, and the driving piece 31 is located below the driving jack 41. The pressure limiting valve 30 is sinking under gravity, so that the driving piece 31 can move away from the driving device 40 (as shown by arrow in fig. 4), and the driving piece 31 cannot contact with the driving ejector rod 41 in the whole assembly process, so that the driving ejector rod 41 of the driving device 40 is avoided, and interference and locking between the driving ejector rod 41 and the pressure limiting valve 30 are prevented. When the inner cover 22 is assembled and the pot cover 20 is closed, the pressure limiting valve 30 is reset, the driving ejector rod 41 is retracted under the action of the reset spring arranged at the rear end, and a gap is reserved between the driving ejector rod 41 and the driving piece 31. The structure can enable the driving ejector rod 41 to be matched with the driving piece 31 in normal operation, and the front end of the driving ejector rod 41 is matched with the driving piece 31 to drive the pressure limiting valve 30 to open and exhaust, so that the driving is more stable and reliable.

As shown in fig. 4 to 8, in the electric pressure cooker of the first embodiment, when the inner lid 22 is assembled to the upper lid, the upper lid is in an open state, the driving means 40 is located above the side of the pressure limiting valve 30, specifically, the driving means 40 is located above the right side of the pressure limiting valve 30. The above structure is more convenient for the arrangement of the driving device 40 and the pressure limiting valve 30 on the pot cover 20, so that the structure on the pot cover 20 is more compact.

As shown in fig. 5 and 7, in the electric pressure cooker of the first embodiment, an inclined portion is provided on the circumferential outer surface of the pressure limiting valve 30. An escape recess portion recessed in the extending direction of the drive jack 41 is formed between the drive piece 31 and the inclined portion. When the inner cover 22 is assembled on the upper cover, the pressure limiting valve 30 is sunk under gravity, and the avoidance concave part can increase the distance between the front end of the driving ejector rod 41 and the pressure limiting valve 30, so that interference and clamping between the driving ejector rod 41 and the pressure limiting valve 30 and/or the driving piece 31 are further prevented. When the inner cover 22 is assembled and the pot cover 20 is closed, the driving ejector rod 41 is matched with the driving piece 31, and the front end of the driving ejector rod 41 is matched with the driving piece 31 to drive the pressure limiting valve 30 to open and exhaust, so that the driving is more stable and reliable.

As shown in fig. 5, in the electric pressure cooker of the first embodiment, the upper portion of the pressure limiting valve 30 is a frustum 32. The circumferential outer surface of the frustum 32 forms an inclined portion. The space of the escape recess formed between the driving piece 31 and the inclined portion (the circumferential outer surface of the frustum 32) is larger. The inclined part formed by the frustum 32 is arranged at a position which is more suitable for the actual assembly environment, the avoidance effect is better, and the frustum 32 is more convenient to process. Of course, the specific form of the inclined portion is not limited thereto, and in other embodiments not shown in the drawings, the inclined portion may be other inclined structures, for example, the inclined portion may be an inclined cut surface formed on the circumferential outer surface of the pressure limiting valve.

As shown in fig. 5, in the electric pressure cooker of the first embodiment, the frustum 32 includes a first frustum 321 and a second frustum 322 which are sequentially connected from top to bottom. The angle between the rotation generatrix of the first frustum 321 and the axial direction of the pressure limiting valve 30 is larger than the angle between the rotation generatrix of the second frustum 322 and the axial direction of the pressure limiting valve 30. The circumferential outer surface of the first taper 321 serves as an intermediate transition, thereby preventing the protrusion from being formed due to too large angle difference of the outer surface of the pressure limiting valve 30, and preventing the front end of the driving jack 41 from interfering with the protrusion.

As shown in fig. 7 and 8, in the electric pressure cooker of the first embodiment, the driving piece 31 is provided to extend in the radial direction of the pressure limiting valve 30. The above-described position of the driving piece 31 can be better matched with the driving jack 41. Of course, the arrangement of the driving piece 31 is not limited to this, and in other embodiments not shown in the drawings, the driving piece may be at any angle to the radial direction of the pressure limiting valve. In addition, the structure of the driving piece 31 is not limited thereto, and in other embodiments not shown in the drawings, the driving piece may include a first driving piece and a second driving piece connected at an angle, the first driving piece is connected with a pressure limiting valve, a recess is formed between the first driving piece and the inclined portion, and when the inner cover is assembled and the cover is closed, the driving ejector rod is matched with the second driving piece.

As shown in fig. 2 to 9, in the electric pressure cooker of the first embodiment, the upper cover includes the face cover and the inner liner 21 which are disposed in this order from top to bottom. The driving means 40 are provided on the inner liner 21. The liner 21 is provided with a mounting hole 23 for penetrating the pressure limiting valve 30. When the inner cap 22 is assembled to the liner 21, the pressure limiting valve 30 is penetrated to the liner 21 through the mounting hole 23Upper part. In the present embodiment, the liner 21Upper partA pressure limiting valve seat 24 is provided. When the inner cap 22 is assembled to the upper cap, the pressure limiting valve 30 is mounted to the pressure limiting valve seat 24. Limiting notches 241 are provided on the circumferential side wall of the pressure limiting valve seat 24. The driving piece 31 is located in the limit notch 241. The limiting notch 241 can limit the movement range of the driving plate 31, and ensure the working reliability and stability of the pressure limiting valve 30.

As shown in fig. 10 and 11, the electric pressure cooker of the second embodiment is mainly different from that of the first embodiment in that, when the inner lid 22 is assembled to the upper lid, the upper lid is in an open state, the driving means 40 is located above the side of the pressure limiting valve 30, specifically, above the left side of the pressure limiting valve 30. The specific position of the driving device 40 may be selected as required.

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

Claims

1. An electric pressure cooker, comprising:

the cooker comprises a cooker body (10) for containing food to be cooked, wherein a heating device is arranged in the cooker body (10);

the pot cover (20) is covered on the pot body (10), the pot cover (20) comprises an upper cover and an inner cover (22), a movable pressure limiting valve (30) is arranged on the inner cover (22), a driving device (40) for driving the pressure limiting valve (30) to open is arranged on the upper cover, and when the inner cover (22) is assembled on the upper cover, the pressure limiting valve (30) is sunk under the gravity to avoid a driving ejector rod (41) of the driving device (40);

the distance from the center of the pressure limiting valve (30) to the rear end of the pot cover (20) is smaller than the distance from the center of the driving device (40) to the rear end of the pot cover (20), so that the driving device (40) avoids the outer edge of the pot cover (20) and is assembled on the pot cover (20).

2. An electric pressure cooker according to claim 1, characterized in that a driving piece (31) cooperating with the driving ram (41) is provided on the circumferential outer surface of the pressure limiting valve (30), the driving piece (31) being located below the driving ram (41) when the inner lid (22) is fitted onto the upper lid.

3. Electric pressure cooker according to claim 1 or 2, characterized in that the drive means (40) are located above the side of the pressure limiting valve (30) when the inner cover (22) is fitted onto the upper cover.

4. Electric pressure cooker according to claim 2, characterized in that an inclined portion is provided on the circumferential outer surface of the pressure limiting valve (30), and a relief recess recessed in the protruding direction of the drive ram (41) is formed between the drive piece (31) and the inclined portion.

5. The electric pressure cooker according to claim 4, characterized in that an upper portion of the pressure limiting valve (30) is a frustum (32), and a circumferential outer surface of the frustum (32) forms the inclined portion.

6. The electric pressure cooker according to claim 5, characterized in that the frustum (32) comprises a first frustum (321) and a second frustum (322) which are connected in sequence from top to bottom, the angle between the swivel generatrix of the first frustum (321) and the axial direction of the pressure limiting valve (30) being greater than the angle between the swivel generatrix of the second frustum (322) and the axial direction of the pressure limiting valve (30).

7. An electric pressure cooker according to claim 2, characterized in that the driving plate (31) is arranged extending in the radial direction of the pressure limiting valve (30).

8. The electric pressure cooker according to claim 1, characterized in that the upper cover comprises a face cover and a liner (21) which are sequentially arranged from top to bottom, the driving device (40) is arranged on the liner (21), a mounting hole (23) for penetrating the pressure limiting valve (30) is arranged on the liner (21), and when the inner cover (22) is assembled on the liner (21), the pressure limiting valve (30) penetrates onto the liner (21) through the mounting hole (23).

9. An electric pressure cooker as claimed in claim 2, characterized in that the upper cover is provided with a pressure limiting valve seat (24), the pressure limiting valve (30) being mounted to the pressure limiting valve seat (24) when the inner cover (22) is assembled to the upper cover, a limit gap (241) being provided on a circumferential side wall of the pressure limiting valve seat (24), the driving piece (31) being located in the limit gap (241).