CN209846865U

CN209846865U - Cooking utensil

Info

Publication number: CN209846865U
Application number: CN201822109914.8U
Authority: CN
Inventors: 梁恩松; 李泽涌; 吕华
Original assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Current assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Priority date: 2018-12-14
Filing date: 2018-12-14
Publication date: 2019-12-27
Anticipated expiration: 2028-12-14

Abstract

The utility model provides a cooking utensil, which comprises a pot body and a heating platform. An inner pot which is at least partially made of magnetic conduction heating materials is arranged in the cooker body. The heating platform and the cooker body are arranged in a split manner, and an electromagnetic induction heating device is arranged in the heating platform and used for heating the cooker body. Wherein, the outer side of the cooker body at the inner pot is provided with a magnetic field guiding device which can form a magnetic circuit for guiding magnetic flux so as to enhance the magnetic field intensity at the bottom of the inner pot. According to the utility model discloses a cooking utensil is close to the magnetic field intensity of pot diapire in the magnetic field guider that interior pot set up can strengthen, even interior pot and the great distance in electromagnetic induction heating device interval also can realize higher heating efficiency.

Description

Cooking utensil

Technical Field

The utility model discloses generally relate to the technical field of cooking utensil equipment.

Background

The functions of the current market products of cooking appliances such as electric cookers are more and more complex. Meanwhile, the number of parts for realizing various functions on the cooking utensil is increased. One result is that the volume and weight of the cooking appliance also gradually increase. The user cannot easily move the cooking appliance in the using process, which brings inconvenience. In view of the above, the applicant has designed a split cooking appliance, which separates the heating part and the cooker body into two separate parts for cooperation, so as to make the structure more compact. After the culinary art is accomplished, can with a kind of deep pot body and heating part separation, remove alone to realize nimble light use experience. In order to ensure heating efficiency, electromagnetic Induction Heating (IH) is mostly adopted in such cooking appliances. However, the heating part and the cooker body are separated, and due to the shells of the heating part and the cooker body and the existence of machining tolerance, the electromagnetic induction distance between the device for electromagnetic induction and the inner pot in the cooker body is larger, so that the heating efficiency is reduced.

Accordingly, there is a need for a cooking appliance that at least partially solves the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.

To solve the above problem at least in part, the present invention provides a cooking appliance, comprising:

the cooker comprises a cooker body, a heating device and a control device, wherein an inner pot is arranged in the cooker body, and at least part of the inner pot is made of magnetic materials; and

the heating platform and the cooker body are arranged in a split manner, an electromagnetic induction heating device is arranged in the heating platform, and the electromagnetic induction heating device is used for heating the cooker body;

the cooker body is provided with a magnetic field guide device at a position close to the inner pot, and the magnetic field guide device can form a magnetic circuit for guiding magnetic flux so as to enhance the magnetic field intensity at the bottom of the inner pot.

According to the utility model discloses a cooking utensil is close to the magnetic field intensity of pot diapire in the magnetic field guider that interior pot set up can strengthen, even interior pot and the great distance in electromagnetic induction heating device interval also can realize higher heating efficiency.

Optionally, the magnetic field directing means is at least partially constructed of a ferrite material. Thus, the ferrite can perform the functions of concentrating and guiding the magnetic field.

Optionally, the pot body further comprises a heat shield, the heat shield comprises a bottom wall and a side wall extending upward from the bottom wall, and surrounds the inner pot from below and a side portion of the inner pot, and the magnetic field guiding device is disposed outside the heat shield. Thereby, the magnetic field guide means can be conveniently provided.

Optionally, the magnetic field guiding device is disposed at an edge of the bottom wall of the heat shield, and the magnetic field guiding device includes a plurality of magnetic field guiding devices and is arranged at intervals along a circumferential direction of the bottom wall. Therefore, the plurality of magnetic field guiding devices arranged along the circumferential direction can better perform the functions of concentrating and guiding the magnetic field.

Optionally, the magnetic field guide is configured to be cylindrical and has axially opposite first and second ends, the magnetic field guide being disposed obliquely with respect to the central axis of the inner pan, wherein the first end is located above the second end and the first end is further away from the central axis of the inner pan than the second end. Therefore, the magnetic field guiding device has better magnetic conduction effect.

Optionally, the magnetic field guiding device is configured as a strip, and a width-direction dimension of the magnetic field guiding device is greater than or equal to 6mm, and/or a thickness-direction dimension of the magnetic field guiding device is greater than or equal to 2 mm. Therefore, the magnetic field guide device is simple in structure and convenient to manufacture and install.

Optionally, the angle between the long axis of the magnetic field guiding device and the central axis of the inner pot is in the range of 0-55 °. This can further optimize the concentration and guidance of the magnetic field.

Optionally, the heat shield is made of plastic, and the magnetic field guiding device and the heat shield are integrally formed by injection molding. Therefore, the magnetic field guide device is convenient to arrange.

Optionally, the pot body further comprises an outer shell at least partially surrounding the heat shield, the magnetic field directing device being located within and fitted over the outer shell. Therefore, the magnetic field guide device is convenient to arrange.

Optionally, the bottom wall of the outer shell has an opening, the bottom wall of the heat shield is embedded in the opening, and an outer surface of the bottom wall of the outer shell is flush with an outer surface of the bottom wall of the heat shield. Therefore, the distance between the inner pot and the electromagnetic induction heating device can be reduced.

Drawings

The following drawings of the embodiments of the present invention are provided as a part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is a perspective view of a cooking appliance according to a preferred embodiment of the present invention; and

fig. 2 is a vertical sectional view of the cooking appliance shown in fig. 1.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring embodiments of the present invention.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art.

Hereinafter, a cooking appliance according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. It can be understood, according to the utility model discloses a cooking utensil can be for electric rice cooker, electric pressure cooker or other cooking utensil, and according to the utility model discloses a cooking utensil except having the function of cooking rice, can also have various functions such as cooking congee, a kind of deep pot hot water, fried dish.

Fig. 1 shows a schematic structural view of a cooking appliance 1 according to a preferred embodiment of the present invention, which mainly includes two parts of a pot body 10 and a heating platform 20 which are separately arranged. The pot body 10 may have a cooking function identical to one or more of cooking appliances such as an electric rice cooker, an electric pressure cooker, an induction cooker, an electric kettle, an electric tea boiler, and the like. The heating stage 20 is provided with a heating means (not shown in fig. 1) to heat the pot body 10.

As shown in fig. 1, the pot body 10 of the lid body 11 may have a rounded rectangular parallelepiped shape in which the inner pot 12 is disposed. In one embodiment, the pot body 10 has a cylindrical inner pot receiving portion (not shown) therein, and the inner pot 12 can be freely put into or taken out of the inner pot receiving portion to facilitate cleaning of the inner pot 12. The inner pot 12 is generally made of a metal material and has a circular opening on an upper surface for containing a material to be heated, such as rice, soup, etc. Of course, the inner pot 12 may be fixedly provided in the pot body 10 so as not to be removable. The pot body 10 is further provided with a lid body 11. The cover 11 may have a shape substantially corresponding to the pot body 10. The lid body 11 is pivotally connected to the pot body 10 in an openable and closable manner for covering the pot body 10. When the cover 11 is closed on the pot body 10, it covers the inner pot 12 and forms a cooking space with the inner pot 12. Of course, in other embodiments, the cover may not be provided.

As shown in fig. 2, the heating device 21 is disposed within the heating platform 20. Other components such as controls are also provided within the heating platform 20. Thus, by providing the parts in the two portions of the pot body 10 and the heating stage 20, respectively, it is possible to make each portion have a small volume and a small weight. The user only needs to move the pot body 10 after finishing cooking without moving the heating stage 20 together. Therefore, according to the utility model discloses a cooking utensil has light nimble characteristics. Further, it is also possible to provide the heating platform 20 to be adapted to the pot bodies 10 having different cooking functions, reducing the number of cooking appliances in the home.

In order to ensure the heating efficiency, the heating device 21 is configured as an electromagnetic induction heating device. Therefore, in the following description, the heating device 21 may also be referred to as an electromagnetic induction heating device 21. Specifically, the electromagnetic induction heating device 21 may be configured in the form of a coil disk. Accordingly, the inner pan 12 may be configured to be at least partially fabricated from a magnetically conductive heating material. For example, the inner pan 12 may be constructed as a pan wall with an iron-based layer, or may also have a pan wall of a non-magnetic material with a magnetically conductive layer disposed on the pan wall. When cooking is needed, the pot body 10 is placed on the heating platform 20, the electromagnetic induction heating device 21 is powered on and generates a magnetic field, the inner pot 12 generates vortex under the action of the magnetic field, and the food or water in the inner pot 12 is heated by the heat generated by the vortex.

Since the cooking appliance 1 is constructed in a separate body form, and the electromagnetic induction heating means 21 and the inner pot 12 are respectively located in two different portions of the heating platform 20 and the pot body 10. When the pot body 10 is placed on the heating platform 20, at least the bottom shell of the pot body 10 and the top shell plate of the heating platform 20 are spaced between the inner pot 12 and the electromagnetic induction heating device 21, and there are gaps between the parts, plus the tolerance caused by the manufacturing and assembling. As a result, the distance between the bottom of the inner pot 12 and the coil of the electromagnetic induction heating unit 21 is large, and exceeds the proper electromagnetic induction distance, so that the problems of low heating efficiency or unstable heating of the inner pot 12 are easily caused.

Therefore, as shown in fig. 2, according to the cooking utensil of the present invention, a magnetic field guide 30 is provided in the pot body 10 at a position close to the inner pot 12. The magnetic field guides 30 are at least partially made of a material that is magnetically permeable and has a low resistance value, has good magnetic permeability and does not generate excessive heat. During heating, the magnetic field guiding device 30 can generate a magnetic circuit for guiding magnetic flux through good magnetic conductivity of the magnetic field guiding device, so that the magnetic field generated by the electromagnetic induction heating device 21 is concentrated and guided to the bottom wall of the inner pot 12, the magnetic field intensity at the position of the bottom wall of the inner pot 12 is enhanced, and the electromagnetic induction heating efficiency is improved. Preferably, the magnetic field guiding means 30 may be composed of a ferrite magnetically permeable material.

Preferably, the pot body 10 further comprises a heat insulating cover 14 surrounding the inner pot 12 below and at the side of the inner pot 12, for reducing the heat transfer of the inner pot 12 with the outside, and for insulating heat. As shown in fig. 2, the heat shield 14 includes a bottom wall 141 and a side wall 142 extending upward from the bottom wall 141. The magnetic field guiding device 30 may be arranged outside the heat shield 14 to ensure that it is at a short distance from the electromagnetic induction heating device 21 in the heating platform 20. Further preferably, the magnetic field guiding device 30 may comprise a plurality of and be arranged at intervals along the circumference of the bottom wall 141 of the heat shield 14 to evenly distribute the magnetic field at the bottom of the inner pot 12. In the present embodiment, the magnetic field guiding device 30 is disposed at the edge of the bottom wall 141 of the heat shield 14 (i.e., at the position where the bottom wall 141 intersects the side wall 142) to concentrate and guide the magnetic field in a wider range to the bottom of the inner pot 12.

As shown in fig. 2, the magnetic field guiding device 30 may be configured in a cylindrical shape having both ends in the axial direction. When heated, the two ends form two magnetic poles of a magnetic field respectively. Preferably, the magnetic field guiding means 30 is arranged in an inclined posture with respect to the central axis of the inner pot 12, wherein the end located above is farther away from the central axis of the inner pot 12 than the end located below. With such an arrangement, the magnetic field guiding device 30 can perform a better magnetic conduction function. The end located above may be referred to as the first end and the end located below may be referred to as the second end. As shown in fig. 2, the axial direction of the magnetic field guiding device 30 forms an included angle a with the plane of the bottom wall of the inner pot 12. Preferably, the included angle A may range from 90 to 135. Accordingly, the angle between the axial direction of the magnetic field guiding means 30 and the central axis of the inner pot 12 may be 0-55 °.

In another embodiment, the magnetic field guide 30 may also be configured in an elongated shape, and the size thereof in the width direction may be greater than or equal to 6mm, and the size thereof in the thickness direction may be greater than or equal to 2 mm. In this manner, the regular shape facilitates fabrication of the magnetic field guidance device 30. The magnetic field guides configured as elongated strips can be arranged in a similar manner to the magnetic field guides configured as cylindrical strips. It will be appreciated that the heat shield 14 is made of a plastic material. The plastic material has poor thermal conductivity, thereby having good heat preservation and heat insulation performance. In one embodiment, the heat shield 14 may be formed by an injection molding process, and the magnetic field guiding device 30 may be integrally formed with the heat shield 14 during the injection molding process, so that a step of additionally providing the magnetic field guiding device 30 is omitted, and the efficiency of production and assembly is improved.

Further, preferably, as shown in fig. 2, the pot body 10 may include an outer case 13. The outer shell 13 encloses the components of the pot body 10 therein and at least partially surrounds the heat shield 14 for protection. The magnetic field guidance device 30 is likewise surrounded by the outer housing 13 and can be separately formed and fitted on the outer housing 13.

Further preferably, the outer housing 13 has a bottom wall 131, and the bottom wall 131 is opened with an opening (not shown). The bottom wall 141 of the heat shield 14 may be fitted within the opening with the outer surface of the bottom wall 141 of the heat shield 14 flush with the outer surface of the bottom wall 131 of the outer housing 13. This makes it possible to make the pot body 10 have a compact structure and to reduce the distance between the inner pot 12 and the electromagnetic induction heating means 21, improving the efficiency of electromagnetic induction heating.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. It will be appreciated by those skilled in the art that many more modifications and variations are possible in light of the above teaching and are intended to be included within the scope of the invention.

Claims

1. A cooking appliance (1), characterized in that the cooking appliance (1) comprises:

the cooker comprises a cooker body (10), wherein an inner pot (12) is arranged in the cooker body (10), and the inner pot (12) is at least partially made of magnetic conduction heating materials; and

the heating platform (20) and the pot body (10) are arranged in a split mode, an electromagnetic induction heating device (21) is arranged in the heating platform (20), and the electromagnetic induction heating device (21) is used for heating the inner pot (12);

wherein the cooker body (10) is provided with a magnetic field guiding device (30) at the outer side of the inner pot (12), and the magnetic field guiding device (30) can form a magnetic circuit for guiding magnetic flux to enhance the magnetic field intensity at the bottom of the inner pot (12).

2. Cooking appliance (1) according to claim 1, characterized in that the magnetic field guiding means (30) are at least partially composed of a ferrite material.

3. The cooking appliance (1) according to claim 1, wherein the pot body (10) further comprises a heat shield (14), the heat shield (14) comprises a bottom wall (141) and a side wall (142) extending upward from the bottom wall (141), and surrounds the inner pot (12) from below and a side of the inner pot (12), and the magnetic field guiding means (30) is disposed outside the heat shield (14).

4. The cooking appliance (1) according to claim 3, wherein the magnetic field guiding means (30) are provided at an edge of the bottom wall (141) of the heat shield (14), the magnetic field guiding means (30) comprising a plurality and being arranged at intervals along a circumference of the bottom wall (141).

5. The cooking appliance (1) according to claim 4, wherein the magnetic field guide (30) is configured as a cylinder and has a first end and a second end which are axially opposite, the magnetic field guide (30) being arranged obliquely with respect to the central axis of the inner pot (12), wherein the first end is located above the second end and the first end is further away from the central axis of the inner pot (12) than the second end.

6. Cooking appliance (1) according to claim 4, characterized in that the magnetic field guide (30) is configured as a bar, the dimension of the magnetic field guide (30) in the width direction being greater than or equal to 6mm and/or the dimension of the magnetic field guide (30) in the thickness direction being greater than or equal to 2 mm.

7. Cooking appliance (1) according to claim 5 or 6, characterized in that the long axis of the magnetic field guiding means (30) is at an angle in the range of 0 ° -55 ° to the central axis of the inner pot (12).

8. The cooking appliance (1) according to claim 3, wherein the heat shield (14) is made of plastic, and the magnetic field guiding device (30) is integrally injection-molded with the heat shield (14).

9. The cooking appliance (1) according to claim 3, wherein the pot body (10) further comprises an outer shell (13), the outer shell (13) at least partially surrounding the heat shield (14), the magnetic field guiding device (30) being located inside the outer shell (13) and being embedded on the outer shell (13).

10. The cooking appliance (1) according to claim 9, wherein the bottom wall (131) of the outer casing has an opening in which the bottom wall (141) of the heat shield (14) is embedded, and the outer surface of the bottom wall (131) of the outer casing (13) is flush with the outer surface of the bottom wall (141) of the heat shield (14).