WO2017113922A1

WO2017113922A1 - Inner pot suitable for electromagnetic heating, and cooking utensil having same

Info

Publication number: WO2017113922A1
Application number: PCT/CN2016/101197
Authority: WO
Inventors: 徐腾飞; 吴培洪; 黄宇华
Original assignee: 佛山市顺德区美的电热电器制造有限公司; 美的集团股份有限公司
Priority date: 2015-12-31
Filing date: 2016-09-30
Publication date: 2017-07-06

Abstract

An inner pot (100) suitable for electromagnetic heating, and a cooking utensil having same. The inner pot (100) comprises: an insulating pot body (11), a magnetically conductive layer (12) and an electrically conductive layer (13). The magnetically conductive layer (12) is disposed on a circumferential wall of the insulating pot body (11), and the magnetically conductive layer (12) extends in the circumferential direction of the insulating pot body (11). The electrically conductive layer (13) is disposed on a bottom wall of the insulating pot body (11), and the electrically conductive layer (13) and the magnetically conductive layer (12) are connected in series to form a loop.

Description

Inner pot suitable for electromagnetic heating and cooking utensils therewith

Technical field

The invention relates to the technical field of household appliances, in particular to an inner pot suitable for electromagnetic heating and a cooking appliance therewith.

Background technique

IH heating has become the mainstream heating method due to its fast heating speed, high energy efficiency and easy control. The IH rice cooker in the related art generally uses a coil disk to generate a magnetic field to heat the pan. The heated inner pot generally covers the entire heating area by the magnet, and the magnetic field generated by the coil disc is concentrated in a certain area instead of being uniformly distributed. In the heating zone of the inner pot, this allows the heat generated by the inner pot to be relatively concentrated, thereby affecting the quality of the rice cooking. In order to solve the above problem, the method of increasing the inner pot thickness or changing the distribution of the coil disc is generally adopted to achieve the purpose of uniformly heating the inner pot. However, the above method not only increases the manufacturing difficulty of the product, but also increases the manufacturing cost, and the problem of uniform heating of the inner pot cannot be effectively solved.

Summary of the invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, the first aspect of the present invention is to provide an inner pot suitable for electromagnetic heating, which can achieve uniform heating to a certain extent.

A second aspect of the present invention is to provide a cooking appliance having the inner pot described above.

A third aspect of the present invention is to provide a cooking appliance comprising an outer pot, and the cooking pot is provided with the inner pot described above.

An inner pot suitable for electromagnetic heating according to an embodiment of the present invention includes: an insulating pot body, a magnetic conductive layer, and a conductive layer. The magnetic conductive layer is disposed on a peripheral wall of the insulating pot body, and the magnetic conductive layer extends along a circumferential direction of the insulating pot body. The conductive layer is disposed on a bottom wall of the insulating pot body, and the conductive layer and the magnetic conductive layer are connected in series to form a loop.

According to an embodiment of the present invention, an inner pot suitable for electromagnetic heating is provided with a magnetic conductive layer on a peripheral wall of the inner pot, a conductive layer is arranged on the bottom wall of the inner pot, and the conductive layer is connected in series with the magnetic conductive layer, thereby The heating of the inner wall of the inner pot can achieve heating of the bottom wall of the inner pot, so that the inner pot is more evenly heated.

Further, the inner pot suitable for electromagnetic heating according to the above embodiment of the present invention may further have the following additional technical features:

According to an embodiment of the invention, the conductive layer is in the form of a curved strip and covers the bottom wall of the insulating pot body.

Further, at least one of the conductive layer and the magnetic conductive layer comprises a plurality, each of the conductive layers being connected in series with at least one of the magnetic conductive layers to form a loop, and each of the magnetic conductive layers Connecting with at least one of the conductive layers to form a loop.

Advantageously, the conductive layer comprises a plurality of the conductive layers connected in series to form a loop in series with the magnetically permeable layer.

Further, the magnetic conductive layer comprises a plurality of, and the plurality of magnetic conductive layers are connected in parallel and connected to the conductive layer to form a loop.

In still other embodiments of the present invention, the magnetic conductive layer includes a plurality of mutually independent ones, and the conductive layer includes a plurality of ones that are independent of each other and one-to-one corresponding to the plurality of magnetic conductive layers, each of the conductive The layers are connected in series with the corresponding magnetically conductive layer to form a loop.

According to an embodiment of the present invention, the conductive layer includes a plurality of spiral rings spaced apart from each other, each of the spiral rings extending spirally along a circumferential direction of the insulating pot body and from a bottom wall of the insulating pot body The circumference extends to the center of the bottom wall of the insulating pot body, and the plurality of spiral rings are spirally and nested, and a plurality of the spiral rings are connected in series with the magnetic conductive layer.

Further, a plurality of the spiral loops are connected in series.

Optionally, the sum of the number of turns of the plurality of spiral loops is in the range of 4 to 30 turns.

Optionally, the spiral ring includes two ends, and outer ends of the two spiral rings are respectively connected to the magnetic conductive layer, and inner ends of the two spiral rings are connected.

According to some embodiments of the invention, the total length of the conductive layer is greater than the length of the magnetically conductive layer extending in the circumferential direction.

According to some embodiments of the present invention, the magnetic conductive layer has a ring shape with a notch, and both ends of the notch of the magnetic conductive layer are respectively connected to the conductive layer.

Further, the magnetic conductive layer includes a plurality of upper and lower spaced intervals, and a plurality of the magnetic conductive layers are connected in parallel.

According to some embodiments of the invention, the width of the magnetically permeable layer is greater than the width of the electrically conductive layer.

Optionally, at least one of the magnetic conductive layer and the conductive layer is attached to an outer surface of the insulating pot body.

According to some embodiments of the invention, the insulating pot body is a ceramic pot body that is open at the top.

A cooking appliance according to an embodiment of the second aspect of the present invention includes an induction coil wound around a hollow cylindrical shape, and an inner side of the induction coil is adapted to be placed in the inner pot described above.

A cooking appliance according to an embodiment of the third aspect of the present invention includes: an outer pot, an inner pot, and an induction coil. The inner pot is disposed inside the outer pot, the inner pot is the inner pot described above; the induction coil is wound on the outer pot, the induction coil and the inner pot The magnetically permeable layer is opposite.

DRAWINGS

1 is a schematic view of an inner pot according to an embodiment of the present invention.

Fig. 2 is another schematic view of the inner pot of the embodiment of the present invention.

Fig. 3 is a schematic view showing the current flow of the inner pot of the embodiment of the present invention.

Figure 4 is a schematic illustration of a cooking appliance in accordance with an embodiment of the present invention.

Figure 5 is a schematic illustration of an inner pot in accordance with another embodiment of the present invention.

Figure 6 is a schematic illustration of an inner pot in accordance with still another embodiment of the present invention.

Reference mark:

Inner pot 100, insulating pot body 11, magnetic conductive layer 12, notch 121, first end 122 of magnetic conductive layer, second end 123 of magnetic conductive layer, conductive layer 13, spiral ring 131, cooking appliance 200, induction coil 21 .

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", " The orientation or positional relationship of the indications of "upright", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and The simplification of the description is not intended to limit or imply that the device or component that is referred to has a particular orientation, is constructed and operated in a particular orientation, and thus is not to be construed as limiting. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, "a plurality" means two or more unless otherwise stated.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

An inner pot 100 suitable for electromagnetic heating according to an embodiment of the present invention will be described in detail below with reference to FIGS. 1 through 6.

Referring to FIG. 1, an inner pot 100 suitable for electromagnetic heating according to an embodiment of the present invention includes an insulating pot body 11, a magnetic conductive layer 12, and a conductive layer 13.

Specifically, as shown in FIGS. 1 and 2, the magnetic conductive layer 12 may be disposed on the peripheral wall of the insulating pot body 11, and the magnetic conductive layer 12 may extend in the circumferential direction of the insulating pot body 11. The conductive layer 13 may be disposed on the bottom wall of the insulating pot body 11, and the conductive layer 13 may be connected in series with the magnetic conductive layer 12 to form a loop, so that the inner pot bottom wall may be heated.

In the cooking appliance having the inner pot 100, the induction coil 21 can be disposed around the inner pot 100, and the inner pot feel The coil should be opposite to the magnetic conductive layer 12 on the inner pot 100. Therefore, during the energization process, the alternating current passes through the magnetic conductive layer 12 to generate an induced magnetic field, and the magnetic conductive layer is located in the alternating induced magnetic field. 12 will generate an induced electric field. Since the conductive layer 13 is connected in series with the magnetic conductive layer 12, the induced electric field generated by the magnetic conductive layer 12 will generate a current in the magnetically conductive layer 12 and the conductive layer 13 connected in series, and the current acts to generate heat. The pot 100 is heated.

The inner pot 100 suitable for electromagnetic heating according to an embodiment of the present invention, since the magnetically permeable layer 12 and the conductive layer 13 are connected in series, when the current is induced, the current will follow the magnetic conductive layer 12 and the conductive layer. 13 is circulated, that is, heat is generated by the conductive layer 13 and the magnetic conductive layer 12, and therefore, the positions of the conductive layer 13 and the magnetic conductive layer 12 can be set as needed, thereby achieving heating of a predetermined position, and arranging the magnetic conductive layer reasonably In the case of the

conductive layer

13 and 12, the inner pot 100 can be uniformly heated, thereby avoiding the problem of uneven heating in the inner pot 100 in which the magnetic conductive layer 12 and the conductive layer 13 are not provided.

In addition, a magnetic conductive layer 12 is disposed on the peripheral wall of the inner pot 100, and a conductive layer 13 is disposed on the bottom wall of the inner pot 100, and the conductive layer 13 is connected in series with the magnetic conductive layer 12, thereby heating the inner wall of the inner pot. The heating of the bottom wall of the inner pot is achieved, so that the inner pot 100 is heated more uniformly.

In addition, it can be understood by those skilled in the art that both the magnetic conductive layer 12 and the conductive layer 13 can generate heat by current, and the same or different materials can be used according to the actual use of the conductive layer 13 and the magnetic conductive layer 12. For example, the magnetic conductive layer 12 may be made of iron, and the conductive layer 13 may be made of a material such as iron, aluminum, or copper.

In order to increase the density of the conductive layer 13, the conductive layer 13 may be disposed in a meandering, spiraling or other manner, for example, the conductive layer 13 is disposed to extend inwardly from the periphery of the bottom wall of the insulating pot 11 to the conductive layer. The middle portion of the third layer 13 and the outer end and the inner end of the conductive layer 13 are respectively connected to both ends of the magnetic conductive layer 12. The conductive layer 13 of some embodiments of the present invention will now be described with reference to the accompanying drawings.

According to an embodiment of the present invention, the conductive layer 13 may be in the form of a curved strip and cover the bottom wall of the insulating pot body 11. Thereby, it is equivalent to lengthening the length of the conductive layer 13, which is advantageous in increasing the uniformity of heating.

Referring to FIG. 6, in some embodiments of the present invention, at least one of the conductive layer 13 and the magnetic conductive layer 12 includes a plurality, and each conductive layer 13 is connected in series with at least one magnetic conductive layer 12 to form a loop, and each The magnetic permeability layers 12 are all connected in series with the at least one conductive layer 13 to form a loop. The uniformity of heating is further improved.

Further, the conductive layer 13 may include a plurality of conductive layers 13 and may be connected in series with the magnetic conductive layer 12 to form a loop. The magnetic conductive layer 12 may also include a plurality of magnetic conductive layers 12 and may be connected in parallel. Connecting with the conductive layer 13 to form a loop; more than a plurality of conductive layers 13 and magnetic conductive layers 12, a plurality of conductive layers 13 connected in parallel, a plurality of magnetic conductive layers 12 connected in parallel, and then a plurality of conductive layers connected in parallel 13 and a plurality of magnetically permeable layers 12 connected in parallel are connected in series to form a loop.

In addition, the magnetic conductive layer 12 may include a plurality of mutually independent ones, and the conductive layer 13 includes a plurality of ones that are independent of each other and corresponding to the plurality of magnetic conductive layers 12, and each of the conductive layers 13 is connected in series with the corresponding magnetic conductive layer 12. Form a loop. Thereby the uniformity of heating is further improved.

Referring to FIG. 1 and FIG. 2, in some embodiments of the present invention, the conductive layer 13 may include a plurality of spiral rings 131 spaced apart from each other, and each of the spiral rings 131 may spirally extend along the circumferential direction of the insulating pot body 11 and The bottom wall of the insulating pot body 11 extends to the center of the bottom wall of the insulating pot body 11. The plurality of spiral rings 131 may be spirally and nested in the same direction, and the plurality of spiral rings 131 are all connected in series with the magnetic conductive layer 12.

For example, in the example of FIG. 2, the conductive layer 13 may include two spiral rings 131 spaced apart from each other, and each of the spiral rings 131 may be spirally extended from the outside to the inside or from the inside to the outside in the circumferential direction of the insulating pot 11. The two spiral rings 131 can be spirally arranged in the same direction and nested. Thus, equivalent to the case where the length of the single spiral ring 131 is not changed, the number of turns of the spiral ring 131 is increased, so that the heat of the inner wall of the inner pot is more uniform.

Further, the conductive layer 13 is not limited to the shape of the spiral ring 131 described above, and other shapes such as a "Z" shape, a "back" shape, or the like may be used as long as the circuit can be covered to the bottom wall of the inner pot 100.

In addition, the number of the spiral rings 131 may also be three, four or five, etc., and the plurality of spiral rings 131 may be connected in parallel to each other or in series.

Preferably, as shown in FIG. 2, a plurality of spiral rings 131 may be connected in series. Thereby, the current is easily passed, and the currents of the conductive layer 13 are substantially the same, so that the power of the conductive layer 13 is uniform, and the heat is evenly distributed.

Preferably, the sum of the number of turns of the spiral ring 131 may range from 4 to 30 turns. In other words, the conductive layer 13 may be in the form of a strip, and the number of intersections of the conductive layer 13 and any radial line on the bottom wall of the insulating pot body is in the range of 4 to 30. Thus, the more the number of turns of the spiral ring 131 (i.e., the longer the total length of the spiral ring 131), the more uniform the heating.

In addition, the specific number of turns of the spiral ring 131 can be adaptively set as needed.

It should be noted that, in practical applications, the gap between the adjacent two loops of the spiral ring 131 can be specifically set according to the size of the inner pot 100 and the number of turns of the spiral ring 131 of the conductive layer 13. The gap is set to ensure two adjacent circles. There is no interference between the spiral loops 131, and the number of turns of the spiral loops 131 is also made as large as possible so that the inner pot 100 can be heated more uniformly.

Referring to FIG. 2, the spiral ring 131 may include two, and the outer ends of the two spiral rings 131 (for example, one end away from the center line of the insulating pot body 11 in FIG. 2) may be respectively connected to the magnetic conductive layer 12, and two spirals The inner ends of the rings 131 (for example, one end of the center line of the insulating pot body 11 in Fig. 2) may be connected. Thereby, the magnetic conductive layer 12 and the conductive layer 13 can be formed into a closed loop, so that uniform heating of the inner pot 100 can be achieved.

Referring to FIGS. 1 and 2, the total length of the conductive layer 13 is greater than the length of the magnetically conductive layer 12 extending in the circumferential direction. Thereby, the heat receiving area of the bottom wall of the insulating pot body 11 can be increased, so that heat can be concentrated on the bottom wall of the insulating pot body, so that uniformity of heat can be ensured to some extent.

In addition, the conductive layer 13 covering the bottom wall of the insulating pot body 11 is understood to mean that the bottom wall of the insulating pot body 11 is located within the coverage of the conductive layer 13. Since the conductive layer 13 may be in a form in which the segments are spaced apart, the coverage of the conductive layer 13 should include a gap formed between the segments of the conductive layer 13.

As shown in FIGS. 1 and 2, the magnetically permeable layer 12 may be in the shape of a ring having a notch 121 and both ends of the magnetically permeable layer 12 (eg, the first end 122 and the second end 123 of the magnetically permeable layer 12 in FIG. 2). They may be connected to the conductive layer 13, respectively.

Further, the magnetic conductive layer 12 may also be in the form of extending in the circumferential direction of the insulating pot body 11 and spiraling in the up and down direction.

Wherein, the notch 121 can extend to the bottom surface of the inner pot 100, so that the magnetic conductive layer 12 can be an uninterrupted whole, thereby forming a closed curved circuit in the wall of the inner pot 100, thereby achieving internal Stereo heating of the pan 100.

Specifically, the bottom wall of the inner pot 100 may be provided with two spiral coils 131 in the same direction. The two spiral coils 131 may be connected to the central portion of the bottom of the inner pot 100, and the inner wall of the inner pot 100 may be provided. There is a magnetic conductive layer 12, and the magnetic conductive layer 12 may be an annular structure formed with a notch 121. The first end 122 of the magnetic conductive layer 12 and the second end 123 of the magnetic conductive layer 12 may be respectively connected to the bottom wall of the inner pot 100. The opposite-direction spiral ring 131 is connected to both ends of the inner wall of the inner pot 100, respectively. Thereby, a closed loop can be formed between the magnetic permeability layer 12 and the conductive layer 13, so that the heat of the inner pot 100 can be made more uniform.

Referring to FIG. 3 in conjunction with FIG. 2, a portion of the closed loop may be located on the bottom surface of the inner pot 100 and another portion may be located on the side wall of the inner pot 100. According to the principle of electromagnetic heating, when the magnetic conductive layer 12 generates a current under the action of the magnetic field generated by the electromagnetic induction coil, the current must pass through the curved loop of the side wall portion of the inner pot 100, and generates heat to the side wall of the inner pot 100. The heating is performed so that the bottom surface of the inner pot 100 and the side wall of the inner pot 100 are simultaneously heated, so that the three-dimensional heating of the inner pot 100 can be realized, thereby solving the related art that the inner pot can only be heated at the bottom, which is easy to cause The problem that the food coke or the inner pot is broken due to excessive local heating of the inner pot does not need to provide a plurality of induction coils to heat the inner pot, thereby making the inner pot 100 easy to manufacture and reducing the cost.

Further, referring to FIG. 5, the magnetic permeability layer 12 may include a plurality of upper and lower (eg, up and down directions shown in FIG. 5) spaced apart, and the plurality of magnetic conductive layers 12 may be connected in parallel. Thereby, it is facilitated that the magnetic conductive layer 12 induces a magnetic field to generate an induced electromotive force to improve heating efficiency.

In addition, the magnetic conductive layer 12 can be relatively uniformly distributed on the outer peripheral wall of the inner pot 100, so that the contact area of the magnetic conductive layer 12 and the inner pot 100 can be increased to some extent, so that the inner pot 100 can be heated more uniformly.

Referring to FIG. 2 in conjunction with FIG. 1, the width of the magnetically permeable layer 12 may be greater than the width of the conductive layer 13.

Specifically, as shown in FIG. 2, the width of the spiral ring 131 forming the electromotive force end may be greater than or equal to the width of the conductive layer 13 on the bottom wall of the inner pot 100. Thereby, the inner pot 100 can be uniformly heated.

Alternatively, at least one of the magnetic conductive layer 12 and the conductive layer 13 may be attached to the outer surface of the insulating pot body 11.

For example, referring to FIG. 1 and FIG. 2, in the embodiment of the present invention, the magnetic conductive layer 12 may be attached to the outer surface of the insulating pot body 11, and the conductive layer 13 may be attached to the bottom wall of the insulating pot body 11.

Of course, in other embodiments of the present invention, the conductive layer 13 and the magnetic conductive layer 12 may also be disposed inside the wall of the insulating pot body 11. In addition, the conductive layer may be provided under the premise of ensuring safety and stability. 13 and in the magnetic permeability layer 12 At least a portion is provided on the inner surface of the insulating pot body 11. The arrangement of the magnetic conductive layer 12 and the conductive layer 13 is not specifically limited in the present invention, and the practical adjustment can be adjusted according to needs.

Illustrative and without limitation, the insulating pot body 11 may be a ceramic pot body that is open at the top. Thereby, the insulating pot body 11 can be made to have better chemical and thermal stability, and it is also advantageous to place the food material in the insulating pot body 11 or take out the food from the insulating pot body 11.

It can be understood that the insulating pot body 11 can be a ceramic pot body. Of course, the insulating pot body 11 can also be made of other materials such as aluminum or stainless steel. When the insulating pot body 11 is made of a material such as aluminum or stainless steel, it is necessary to laminate an insulating layer on the outer surface of the insulating pot body 11. The magnetic permeability layer 12 can be made of a magnetically permeable material such as copper, aluminum, iron or stainless steel. The composite method of the magnetic conductive layer 12 may be, for example, spraying, pasting, or electroplating, as long as a stable and reliable magnetic conductive layer 12 can be formed on the outer surface of the insulating pot body 11.

Referring to FIG. 4 and in conjunction with FIG. 1, a cooking appliance 200 according to an embodiment of the second aspect of the present invention includes an induction coil 21, and the induction coil 21 is wound to form a hollow cylindrical shape, and the inner side of the induction coil 21 is adapted to be placed in the inner pot. 100.

According to the cooking appliance 200 of the embodiment of the invention, by providing the inner pot 100 of the first aspect embodiment described above, the mouthfeel of the cooked food can be improved.

As shown in FIGS. 4 and 1, a cooking appliance 200 according to an embodiment of the third aspect of the present invention includes an outer pot (not shown), an inner pot, and an induction coil 21. The inner pot may be disposed inside the outer pot, the inner pot may be the inner pot 100 described above, the induction coil 21 may be wound on the outer pot, and the induction coil 21 may be opposite to the magnetic conductive layer 12 on the inner pot 100. Thereby, an induced current can be formed, so that heat can be generated to heat the foodstuff.

Specifically, referring to FIG. 4 in conjunction with FIG. 2, when the cooking device 200 has an alternating current passing through the induction coil 21 at the side wall position of the inner pot 100, the magnetic field of the notch 121 is provided on the side wall of the inner pot 100. Both ends of the layer 12 (eg, the first end 122 and the second end 123 of the magnetically permeable layer 12 in FIG. 2) may form an electromotive force due to the first end 122 and the second end 123 of the magnetically permeable layer 12 and the bottom of the inner pot The conductive layers 13 are connected so that a closing current is formed in the bottom conductive layer 13 and the peripheral magnetic conductive layer 12, so that heat can be generated at a place where the current passes to heat the inner pot 100. Further, since the conductive layer 13 at the bottom is uniformly distributed, the inner pot 100 can be uniformly heated, whereby the cooking utensil 200 can uniformly heat the food.

It can be understood by those skilled in the art that the inductive coil 21 and the magnetically permeable layer 12 of the present invention are opposite (or corresponding) to each other. When the induction coil 21 is energized, the induced magnetic field generated by the induction coil 21 will cover the magnetic field. At least a portion of layer 12.

In addition, the coverage of the induction coil 21 referred to in the present invention refers to the coverage of the induced magnetic field generated by the induction coil 12 when the induction coil 21 is energized, or the effective coverage of the induced magnetic field generated by the induction coil 21, that is, In the coverage of the induction coil 21, the induction coil 21 generates a strong induced magnetic field, and an appropriate induced electromotive force can be generated on the magnetic conductive layer 12 by the induced magnetic field to form an induced electric field to heat the inner pot. For example, the sense of the invention Covering the entire magnetically permeable layer 12 with the coil 21 means that the induced magnetic field generated by the induction coil 21 covers the entire magnetically permeable layer 12.

According to the cooking appliance 200 of the embodiment of the present invention, the inner wall of the inner pot 100 without the induction coil 21 can also achieve heating of the inner bottom wall of the inner pot. The position of the induction coil 21 can be flexibly set, so that the bottom wall of the entire cooking appliance 200 can be made thinner, which is more advantageous for miniaturization of the cooking appliance 200. In addition, the entire induction coil 21 can be wound around the outer surface of the outer pot, so that the bottom induction coil holder can be omitted, which is more advantageous for cost saving.

It should be noted that the above embodiment of the present invention is described by taking an inner pot 100 suitable for electromagnetic heating as an example. Of course, the inner pot 100 of the present invention can also be used for other cookware such as rice cookers, electric pressure cookers, induction cookers, etc., as long as the cooking utensils adopting the principle of electromagnetic heating fall within the protection scope of the present invention.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples", etc. Particular features, structures, materials or features described in the examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

An inner pot suitable for electromagnetic heating, characterized in that it comprises:

Insulated pot body;

a magnetic conductive layer, the magnetic conductive layer is disposed on a peripheral wall of the insulating pot body, and the magnetic conductive layer extends along a circumferential direction of the insulating pot body;

a conductive layer, the conductive layer is disposed on a bottom wall of the insulating pot body, and the conductive layer and the magnetic conductive layer are connected in series to form a loop.
The inner pot suitable for electromagnetic heating according to claim 1, wherein the conductive layer has a curved strip shape and covers a bottom wall of the insulating pot body.
The inner pot suitable for electromagnetic heating according to claim 1 or 2, wherein at least one of the conductive layer and the magnetic conductive layer comprises a plurality, each of the conductive layers and at least one The magnetic conductive layers are connected in series to form a loop, and each of the magnetic conductive layers is connected in series with at least one of the conductive layers to form a loop.
The inner pot suitable for electromagnetic heating according to claim 3, wherein the conductive layer comprises a plurality of the conductive layers connected in series to form a loop in series with the magnetic conductive layer.
The inner pot suitable for electromagnetic heating according to claim 3, wherein the magnetic conductive layer comprises a plurality of, and the plurality of magnetic conductive layers are connected in parallel to form a loop with the conductive layer.
The inner pot suitable for electromagnetic heating according to claim 3, wherein the magnetic conductive layer comprises a plurality of mutually independent ones, and the conductive layer comprises one-to-one corresponding to each other and to the plurality of magnetic conductive layers. And a plurality of each of the conductive layers are connected in series with the corresponding magnetic conductive layer to form a loop.
The inner pot suitable for electromagnetic heating according to any one of claims 1 to 6, wherein the conductive layer comprises a plurality of spiral rings spaced apart from each other, each of the spiral rings being along the insulation a circumferential spiral of the pot body extends from a peripheral wall of the insulating pot body to a center of a bottom wall of the insulating pot body, and the plurality of spiral loops are spirally and nested, a plurality of the spirals The rings are all in series with the magnetically permeable layer.
The inner pot suitable for electromagnetic heating according to claim 7, wherein a plurality of said spiral rings are connected in series.
The inner pot suitable for electromagnetic heating according to claim 7, wherein the sum of the number of turns of the plurality of spiral loops is in the range of 4 to 30 turns.
The inner pot suitable for electromagnetic heating according to claim 7, wherein the spiral ring comprises two, the outer ends of the two spiral rings are respectively connected to the magnetic conductive layer, and the two The inner ends of the spiral rings are connected.
An inner pot suitable for electromagnetic heating according to any one of claims 1 to 10, characterized in that said conductive The total length of the layer is greater than the length of the magnetically conductive layer extending in the circumferential direction.
The inner pot suitable for electromagnetic heating according to any one of claims 1 to 10, wherein the magnetic conductive layer has a ring shape having a notch, and both ends of the notch of the magnetic conductive layer are respectively The conductive layers are connected.
The inner pot suitable for electromagnetic heating according to any one of claims 1 to 10, wherein the width of the magnetic conductive layer is larger than the width of the conductive layer.
The inner pot suitable for electromagnetic heating according to any one of claims 1 to 10, wherein the insulating pot body is a ceramic pot body whose top is open.
A cooking appliance characterized by comprising an induction coil wound around a hollow cylindrical shape, and an inner side of the induction coil is adapted to place the inner pot according to any one of claims 1-14.
A cooking appliance comprising:

Outer pot

An inner pot, the inner pot being disposed inside the outer pot, the inner pot being the inner pot according to any one of claims 1-14;

An induction coil wound around the outer pot, the induction coil being opposite to the magnetically permeable layer on the inner pot.