CN108968669B - Electric pressure cooker - Google Patents

Abstract

The invention provides an electric pressure cooker, comprising: the pot body is used for containing food to be cooked; the cooker cover is arranged on the cooker body and is provided with an exhaust port communicated with the inside of the cooker body; the elastic pressure limiting assembly is arranged on the exhaust port and comprises a movable plug and an elastic piece matched with the plug, and the elastic piece applies elastic force towards the direction of the exhaust port to the plug; magnetic induction spare and magnetism controlling means, magnetic induction spare set up on the end cap, and magnetism controlling means adsorbs or repels the magnetic induction spare in order to exert the magnetic force that deviates from the direction of gas vent to the end cap, and magnetism controlling means is through the size that changes magnetic force to the pressure release pressure of the pot body is changed. The technical scheme of the invention can effectively solve the problem that the pressure relief pressure of the electric pressure cooker in the prior art is difficult to control.

Description

Electric pressure cooker

Technical Field

The invention relates to an electric pressure cooker, in particular to an improvement of an elastic pressure limiting valve of the electric pressure cooker.

Background

With the improvement of the living standard of people, the electric pressure cooker is widely used as a substitute product of the traditional pressure cooker and is favored by consumers. In the process of cooking food by using the electric pressure cooker, the electric pressure cooker continuously releases pressure to enable the cooker to continuously boil, so that the food is driven to continuously roll, and the cooked food is more delicious. However, in actual cooking, different foods have corresponding cooking pressures, and in order to meet the cooking requirements of different foods, the electric pressure cooker needs to be capable of realizing various pressure relief pressures. Chinese patent application No. 201120195784.X discloses an automatic pressure relief valve of an electric pressure cooker, which specifically discloses that a magnetic metal ring is arranged at the lower part of a gravity valve, an electric control magnetic device is arranged on a gravity valve mounting seat of a cooker cover, and pressure relief pressure is changed by changing the magnitude of magnetic force of the electric control magnetic device for adsorbing the magnetic metal ring. However, because the gravity valve blocks the exhaust port by the inner valve core, when the gravity valve is inclined to form a gap between the valve core and the exhaust port, the electric pressure cooker starts to exhaust and release air, and when the magnetic force is changed, once the force is not uniform, the electric pressure cooker may exhaust and release air in advance. That is, controlling the relief pressure in the above manner is not easy to operate.

Disclosure of Invention

The invention mainly aims to provide an electric pressure cooker, which solves the problem that the pressure relief pressure of the electric pressure cooker in the prior art is difficult to control.

In order to achieve the above object, the present invention provides an electric pressure cooker, comprising: the pot body is used for containing food to be cooked; the cooker cover is arranged on the cooker body and is provided with an exhaust port communicated with the inside of the cooker body; the elastic pressure limiting assembly is arranged on the exhaust port and comprises a movable plug and an elastic piece matched with the plug, and the elastic piece applies elastic force towards the direction of the exhaust port to the plug; magnetic induction spare and magnetism controlling means, magnetic induction spare set up on the end cap, and magnetism controlling means adsorbs or repels the magnetic induction spare in order to exert the magnetic force that deviates from the direction of gas vent to the end cap, and magnetism controlling means is through the size that changes magnetic force to the pressure release pressure of the pot body is changed.

By applying the technical scheme of the invention, the elastic pressure limiting component is arranged on the exhaust port of the cooker cover, and the magnetic induction piece and the magnetic control device are arranged. The elastic pressure limiting assembly comprises a movable plug and an elastic piece matched with the plug. The elastic member applies an elastic force to the plug in a direction toward the exhaust port. The magnetic induction piece is arranged on the plug. The magnetic control device adsorbs or repels the magnetic induction piece so as to apply magnetic force to the plug in the direction away from the exhaust port. As can be seen from the above, the elastic force applied by the elastic element to the plug is opposite to the magnetic force applied by the magnetic induction element to the plug. Under the condition of neglecting the self gravity of the plug, due to the balance of the force, the elastic force of the elastic part is equal to the sum of the magnetic force of the magnetic induction part and the pressure relief pressure inside the pot body. That is to say, when magnetism controlling means changed the size of magnetic force, pressure release pressure also changed thereupon to make electric pressure cooker can realize multiple pressure release pressure, adapt to the culinary art requirement of different food, and can also realize the continuous pressure release of the different pressure release pressure of multistage, last boiling. In addition, compare in the patent that application number is 201120195784.X, the end cap of this application stops the shutoff all the time on the gas vent before beginning the pressure release, and only when the end cap lifts up under the combined action of the elasticity of elastic component, magnetic induction spare magnetic force and the steam pressure in the pot body, the electric pressure cooker just begins the pressure release. Therefore, the above manner makes it easier to control the relief pressure.

Furthermore, the magnetic control device adsorbs or repels the magnetic induction piece after the electrification to exert the magnetic force of the direction deviating from the exhaust port on the plug, and the magnetic control device changes the size of the magnetic force by changing the size of the electrified current of the magnetic control device, so that the pressure relief pressure of the pot body is changed.

Further, the magnetic control device is an electromagnet.

Furthermore, the magnetic control device is arranged in a position-adjustable manner, and the magnetic control device changes the size of magnetic force by changing the distance between the magnetic control device and the magnetic induction piece, so that the pressure relief pressure of the pot body is changed.

Furthermore, the magnetic induction piece is a magnetic attraction piece, and the magnetic control device is positioned above the magnetic induction piece.

Furthermore, the elastic pressure limiting assembly also comprises a valve body, the valve body is in a cylindrical shape with the upper end closed and the lower end opened, the closed end of the valve body is provided with an air passing hole, the elastic piece and the plug are arranged in the valve body, and two ends of the elastic piece respectively abut against the closed end and the plug of the valve body.

Further, the magnetic induction piece is arranged on the surface, away from the exhaust port, of the plug.

Furthermore, a positioning convex part is arranged on the plug, and a positioning hole matched with the positioning convex part is arranged on the magnetic induction piece.

Furthermore, the positioning convex parts are arranged at intervals along the circumferential direction of the plug.

Furthermore, each positioning convex part extends along the circumferential direction of the plug to form an arc shape.

Drawings

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

fig. 1 shows an exploded structural schematic view of a cover, an elastic pressure limiting assembly, a magnetic induction member and a magnetic control device of an electric pressure cooker according to an embodiment of the present invention;

figure 2 shows a schematic cross-sectional view of the lid, the elastic pressure limiting assembly, the magnetic induction member and the magnetic control means of figure 1 after assembly;

fig. 3 shows an enlarged schematic view at a after assembly of the lid, the elastic pressure limiting assembly, the magnetic induction member and the magnetic control device of fig. 2;

fig. 4 shows a schematic structural view of the valve body of the elastic pressure-limiting assembly of fig. 1;

fig. 5 shows a schematic view of the stopper of the elastic pressure limiting assembly of fig. 1; and

fig. 6 shows a schematic structural view of the magnetic sensor of fig. 1.

Wherein the figures include the following reference numerals:

10. a pot cover; 11. an exhaust port; 20. an elastic pressure limiting component; 21. a plug; 211. a positioning projection; 22, an elastic member; 23. a valve body; 231. air passing holes; 30. a magnetic induction member; 31. positioning holes; 40. a magnetic control device.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present 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 according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship 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 of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1 to 3, the electric pressure cooker of the present embodiment includes a cooker body, acooker cover 10, an elasticpressure limiting assembly 20, amagnetic induction member 30 and amagnetic control device 40. Wherein the pot body is used for containing food to be cooked. Thepot cover 10 is arranged on the pot body. Thepot cover 10 is provided with anexhaust port 11 communicated with the inside of the pot body. The elasticpressure limiting member 20 is disposed on theexhaust port 11. The elasticpressure limiting assembly 20 comprises amovable plug 21 and anelastic member 22 matched with theplug 21. Theelastic member 22 applies an elastic force to thestopper 21 in a direction toward theexhaust port 11. Themagnetic induction member 30 is disposed on theplug 21. Themagnetic control device 40 attracts themagnetic sensor 30 to apply a magnetic force to thestopper 21 in a direction away from theexhaust port 11. Themagnetic control device 40 changes the pressure relief pressure of the pan body by changing the magnitude of the magnetic force.

In the electric pressure cooker of the present embodiment, the elasticpressure limiting component 20 is disposed on theair outlet 11 of thecooker lid 10, and themagnetic induction member 30 and themagnetic control device 40 are disposed. The elasticpressure limiting assembly 20 includes amovable plug 21 and anelastic member 22 engaged with theplug 21. Theelastic member 22 applies an elastic force to thestopper 21 in a direction toward theexhaust port 11. Themagnetic induction member 30 is disposed on theplug 21. Themagnetic control device 40 attracts themagnetic sensor 30 to apply a magnetic force to thestopper 21 in a direction away from theexhaust port 11. As can be seen from the above, the elastic force applied to theplug 21 by theelastic member 22 is opposite to the direction of the magnetic force applied to theplug 21 by themagnetic sensor 30. In the case of neglecting the self-weight of thestopper 21, due to the balance of forces, the elastic force of theelastic member 22 is equal to the sum of the magnetic force of themagnetic induction member 30 and the pressure relief pressure inside the pot body. That is to say, when themagnetic control device 40 changes the magnitude of the magnetic force, the pressure relief pressure is changed accordingly, so that the electric pressure cooker can realize various pressure relief pressures, adapt to cooking requirements of different foods, and can realize continuous pressure relief and continuous boiling of multiple sections of different pressure relief pressures. In addition, compared with the patent with the application number of 201120195784.X, theplug 21 of the embodiment is always sealed on theexhaust port 11 before the pressure relief is started, and the pressure relief of the electric pressure cooker is started only when theplug 21 is integrally lifted under the combined action of the elastic force of theelastic element 22, the magnetic force of themagnetic induction element 30 and the steam pressure in the cooker body. Therefore, the above manner makes it easier to control the relief pressure.

It should be noted that, because theplug 21 of the elasticpressure limiting assembly 20 is always sealed on theexhaust port 11 before the pressure relief is started, that is, theplug 21 is always sealed on theexhaust port 11 before the steam pressure in the cooker body reaches the pressure relief pressure, in this process, the deformation amount of theelastic element 22 remains unchanged, and the magnitude of the elastic force applied by theelastic element 22 to theplug 21 remains unchanged.

As shown in fig. 1 and fig. 3, in the electric pressure cooker of the present embodiment, themagnetic induction member 30 is a magnetic attraction member, and themagnetic control device 40 is located above themagnetic induction member 30. Themagnetic control device 40 attracts themagnetic sensor 30 to apply a magnetic force to thestopper 21 in a direction away from theexhaust port 11. It should be noted that the type of themagnetic sensor 30 and the way of matching themagnetic sensor 30 with themagnetic control device 40 are not limited to this, and in other embodiments not shown in the drawings, the magnetic control device may be disposed below the magnetic sensor, and the magnetic control device may repel the magnetic sensor to apply a magnetic force to the plug in a direction away from the exhaust port.

In the electric pressure cooker of the embodiment, after being powered on, themagnetic control device 40 adsorbs themagnetic induction element 30 to apply a magnetic force to theplug 21 in a direction away from theexhaust port 11, and themagnetic control device 40 changes the magnitude of the magnetic force by changing the magnitude of the power current of the magnetic control device, so as to change the pressure relief pressure of the cooker body. In this embodiment, themagnetic control device 40 is an electromagnet, and the magnetic attraction member (the magnetic induction member 30) is a soft magnetic sheet. Themagnetic control device 40 has a simpler structure and is safer and more reliable to use. Meanwhile, the magnetic force is changed by changing the size of the electrified current of themagnetic control device 40, so that the control is more convenient, and the setting position of themagnetic control device 40 is not changed, so that themagnetic control device 40 is convenient to arrange, and the installation space is effectively saved.

The type of themagnetic control device 40 and the method of changing the magnitude of the magnetic force are not limited to these examples, and in other embodiments, the magnetic control device may be of another type, and the method of changing the magnitude of the magnetic force may be of another type. For example, the magnetic control device is arranged in a position-adjustable manner, and the magnetic control device changes the magnitude of magnetic force by changing the distance between the magnetic control device and the magnetic induction piece, so that the pressure relief pressure of the pot body is changed.

As shown in fig. 3 to 6, in the electric pressure cooker of the present embodiment, the elasticpressure limiting assembly 20 further includes avalve body 23. Thevalve body 23 is cylindrical with its upper end closed and its lower end opened. The closed end of thevalve body 23 is provided with agas passing hole 231. Theelastic member 22 and theplug 21 are disposed in thevalve body 23, and both ends of theelastic member 22 respectively abut against the closed end of thevalve body 23 and theplug 21. Thepot cover 10 comprises a face cover, an inner liner, a locking ring and an inner pot cover which are arranged from top to bottom in sequence. The inner pot cover is provided with a through hole, an annular sealing seat is arranged at the through hole, and theexhaust port 11 is formed in the annular sealing seat. When the elasticpressure limiting assembly 20 and thelid 10 are assembled, the open end of thevalve body 23 is connected to the inner lid, one end of theelastic member 22 abuts against the closed end of thevalve body 23 to be fixed, and the other end of theelastic member 22 abuts against theplug 21, so that theplug 21 blocks theexhaust port 11. In this embodiment, the side of theplug 21 facing theexhaust port 11 is provided with an annular rib. When theplug 21 plugs theexhaust port 11, the annular convex rib abuts against the top surface of the annular sealing seat, so that theplug 21 and the annular sealing seat are more stably matched.

As shown in fig. 3 to 6, in the electric pressure cooker of the present embodiment, themagnetic induction element 30 is disposed on the surface of theplug 21 away from theair outlet 11, so that themagnetic induction element 30 is prevented from interfering with the mating of theplug 21 and theair outlet 11. Theplug 21 is provided with apositioning protrusion 211, and themagnetic induction member 30 is provided with apositioning hole 31 matched with thepositioning protrusion 211. When themagnetic induction member 30 is assembled, the positioningconvex portion 211 extends into thepositioning hole 31 to position themagnetic induction member 30, which is more convenient for assembling themagnetic induction member 30. In this embodiment, the positioningprotrusions 211 are provided in plurality at intervals in the circumferential direction of theplug 21, and eachpositioning protrusion 211 extends in the circumferential direction of theplug 21 so as to have an arc shape. The plurality of arc-shaped positioningconvex parts 211 are used for positioning themagnetic induction piece 30 together, so that the positioning effect is better.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. An electric pressure cooker, characterized in that, includes:

the pot body is used for containing food to be cooked;

the pot cover (10) is arranged on the pot body, and an exhaust port (11) communicated with the inside of the pot body is formed in the pot cover (10);

the elastic pressure limiting assembly (20) is arranged on the exhaust port (11), the elastic pressure limiting assembly (20) comprises a movable plug (21) and an elastic piece (22) matched with the plug (21), and the elastic piece (22) applies elastic force to the plug (21) towards the direction of the exhaust port (11);

the magnetic induction piece (30) is arranged on the plug (21), the magnetic control device (40) adsorbs or repels the magnetic induction piece (30) to apply magnetic force to the plug (21) in a direction away from the exhaust port (11), and the magnetic control device (40) changes the pressure relief pressure of the pot body by changing the magnitude of the magnetic force;

wherein, elasticity pressure limiting assembly (20) still includes valve body (23), valve body (23) are upper end and seal lower extreme open-ended tube-shape, be provided with air hole (231) on the closed end of valve body (23), elastic component (22) end cap (21) and magnetic induction spare (30) set up in valve body (23), magnetic induction spare (30) set up end cap (21) deviate from on the surface of gas vent (11), and the both ends of elastic component (22) are supported respectively and are pushed up the blind end of valve body (23) with on the magnetic induction spare (30).

2. The electric pressure cooker according to claim 1, characterized in that the magnetic control device (40) attracts or repels the magnetic induction member (30) after being electrified to apply a magnetic force to the plug (21) in a direction away from the air outlet (11), and the magnetic control device (40) changes the magnitude of the magnetic force by changing the magnitude of the electrified current of the magnetic control device, so as to change the pressure relief pressure of the cooker body.

3. Electric pressure cooker according to claim 2, characterized in that the magnetic control means (40) are electromagnets.

4. The electric pressure cooker according to claim 1, wherein the magnetic control device is arranged with an adjustable position, and the magnetic control device changes the magnitude of the magnetic force by changing the distance between the magnetic control device and the magnetic induction member, so as to change the pressure relief pressure of the cooker body.

5. The electric pressure cooker according to any of the claims 1 to 4, characterized in that the magnetic induction member (30) is a magnetic induction member, and the magnetic control means (40) is located above the magnetic induction member (30).

6. The electric pressure cooker according to claim 1, characterized in that the plug (21) is provided with a positioning protrusion (211), and the magnetic induction member (30) is provided with a positioning hole (31) matched with the positioning protrusion (211).

7. The electric pressure cooker according to claim 6, characterized in that the positioning protrusions (211) are arranged in a plurality at intervals along the circumferential direction of the choke plug (21).

8. The electric pressure cooker according to claim 7, characterized in that each of the positioning protrusions (211) extends in a circumferential direction of the choke plug (21) to have an arc shape.

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