CN212186118U - Container and cooking utensil - Google Patents

Abstract

The utility model discloses a container and cooking utensil, the container includes: a container body; the heating layer is formed on the outer side of the container body, the heating layer forms at least one part of the heating circuit, and the heating layer conducts at least one part of heat generated by the heating layer to the container body; the first portion and the second that connects that the interval set up connect the electric portion, generate heat the layer and connect the electric connection of electric portion and second with first, wherein, the first distance that connects between the electric portion and the second connects is L, and the maximum diameter of vessel is D, and L satisfies the condition: l is more than or equal to 8mm and less than D. According to the container provided by the embodiment of the utility model, the heating layer is connected into the heating circuit by the first power connection part and the second power connection part, and the container body is heated by the heat generated after the heating layer is electrified, so that the container is easy to uniformly heat, the heating efficiency can be improved, the structure of the container is simplified, and the production cost is reduced; by defining the distance between the first electrical part and the second electrical part, short circuits are prevented.

Description

Container and cooking utensil

Technical Field

The utility model belongs to the technical field of life electrical apparatus technique and specifically relates to a container and cooking utensil are related to.

Background

The existing electric rice cooker or electric pressure cooker usually adopts two heating modes, one is heating by adopting an electric heating disk, the electric heating disk is an aluminum alloy disk embedded with an electric heating tube, an inner pot is placed on the electric heating disk, the electric heating tube is used for heating, and then heat is conducted to the inner pot by the aluminum alloy disk, so that the heating efficiency of the heating mode is low, and the heating is uneven; the other is an electromagnetic heating mode, which generates an alternating magnetic field through the components of the electronic circuit board, when the iron-containing container is placed on the container, the surface of the container cuts alternating magnetic lines, so that alternating current (eddy current) is generated at the metal part at the bottom of the container, the eddy current enables iron atoms at the bottom of the container to move randomly at high speed, and the atoms collide and rub with each other to generate heat energy, thereby playing a role in heating food.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a container, which has a simple structure, low cost, high heating efficiency and uniform heating.

The utility model discloses still provide a cooking utensil who has above-mentioned container.

According to the utility model discloses container of first aspect embodiment includes: a container body; the heating layer is formed on the outer side of the container body, the heating layer forms at least one part of a heating circuit, and the heating layer conducts at least one part of heat generated by the heating layer to the container body; the first portion of connecting electricity and the second of setting up at the interval connect the portion, the layer that generates heat passes through first portion of connecting electricity and the second connects the portion electricity to be connected, wherein, first portion of connecting electricity with the distance that the second connects between the portion is L, container body's maximum diameter is D, L satisfies the condition: l is more than or equal to 8mm and less than D.

According to the container provided by the embodiment of the utility model, the heating layer is formed on the outer side of the container body, the first electric connection part and the second electric connection part are arranged, the heating layer can be connected into the heating circuit by utilizing the first electric connection part and the second electric connection part, and the heat generated after the heating layer is electrified heats the container body, so that the container is easy to uniformly heat, the heating efficiency can be improved, the structure of the container is simplified, and the production cost is reduced; by defining the distance between the first electrical part and the second electrical part, short circuits are prevented.

According to some embodiments of the invention, L satisfies the condition: 1/3D is less than or equal to L and less than D.

According to some embodiments of the utility model, first connect electric portion with the second connects at least one formation in electric terminal, conducting layer or leads electrical pillar, connect electric terminal, conducting layer or lead electrical pillar with the layer that generates heat is connected.

In some embodiments, the first electrical connection part and/or the second electrical connection part is fixed to a handle of the container body; or the first electric connection part and/or the second electric connection part are/is fixed on the pan edge of the container body; or the first electric connecting part and/or the second electric connecting part are/is fixed at the bottom of the container body; or, the first electrical connection part and/or the second electrical connection part form the electrical terminal and the conductive column, and the first electrical connection part and/or the second electrical connection part are/is welded to a conductive layer connected with the heating layer.

According to some embodiments of the invention, the container comprises: the first conducting layer is formed on the outer side of the container body, and the first electric connection part is electrically connected with the heating layer through the first conducting layer; the second conducting layer is formed on the outer side of the container body, and the second electric connection part is electrically connected with the heating layer through the second conducting layer.

In some embodiments, one end of the first conductive layer is connected with the heat generating layer and the other end is connected with the first electric connection part; and/or one end of the second conducting layer is connected with the heating layer and the other end of the second conducting layer is connected with the second electric connection part.

According to some embodiments of the invention, the container further comprises: the first insulating layer is formed on the outer side face of the container body, and the heating layer is formed on the surface, far away from the container body, of the first insulating layer.

In some embodiments, the first insulating layer is sprayed on the outer side surface of the container body, and the heat generating layer is sprayed on the surface of the first insulating layer far away from the container body.

According to some embodiments of the utility model, the layer that generates heat includes a plurality of sections that generate heat, and is a plurality of the section that generates heat forms the different regions in the outside of container body, and is a plurality of the layer that generates heat is established ties or is parallelly connected.

According to some embodiments of the present invention, the heat generating layer forms one or more combinations of a curved shape, a zigzag shape, and a straight shape.

According to some embodiments of the present invention, the heat generation layer includes a plurality of heat generation sections, and a plurality of the heat generation sections are connected in series.

In some embodiments, in the extending direction of the heat generating layer, two adjacent heat generating sections are connected in a circular arc or straight line transition manner.

In some embodiments, in the plurality of heating sections, a part of the heating sections is an arc section and another part of the heating sections is a first transition section, a center of a circle corresponding to the plurality of arc sections is a center of the bottom wall of the container body, in the plurality of arc sections, at least a part of the arc sections are arranged at intervals in a radial direction of an imaginary circle, the center of the imaginary circle is the center of the bottom wall of the container body, in an extending direction of the heating layer, two adjacent arc sections are connected by the first transition section, and two adjacent first transition sections are connected by the arc section.

In some examples, the first transition section is a straight section or an arcuate section.

In some embodiments, in a plurality of the heat generation sections, a part of the heat generation sections are flat sections and another part of the heat generation sections are second transition sections, and in a plurality of the flat sections, at least a part of the flat sections are arranged in parallel; and/or at least a part of the straight sections are arranged in a collinear and spaced mode, in the extending direction of the heat-generating layer, two adjacent straight sections are connected through the second transition sections, and two adjacent second transition sections are connected through the straight sections.

In some examples, the second transition section forms an arc section and the circle center corresponding to the arc section is the center of the bottom wall of the container body; and/or the second transition section forms a straight line segment.

According to some embodiments of the invention, the first insulating layer is a coating formed of at least one of alumina, silica and aluminum nitride, and the heat generating layer is an iron-chromium-aluminum-yttrium alloy coating.

According to some embodiments of the present invention, the container further comprises a second insulating layer formed at least on an outer surface of the heat generating layer; or, the container also comprises an insulating shell, and the insulating shell wraps the container body on which the heating layer is formed.

The cooking appliance according to the second aspect of the invention comprises the container according to the above embodiments.

According to some embodiments of the invention, the cooking appliance further comprises: the container is arranged in the base; the cover body is arranged on the base and used for opening and closing the opening of the container body.

In some embodiments, the cover or the base has a first electrical connection portion and a second electrical connection portion adapted to be connected to a power source of the heating circuit, and the first electrical connection portion is electrically connected to the first electrical connection portion and the second electrical connection portion is electrically connected to the second electrical connection portion when the cover is in a state of closing the opening of the container body.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a perspective view of a container according to an embodiment of the present invention;

FIG. 2 is a bottom view of the container shown in FIG. 1;

FIG. 3 is a side view of the container shown in FIG. 1;

fig. 4 is a bottom view of a container according to another embodiment of the present invention;

fig. 5 is a bottom view of a container according to yet another embodiment of the present invention;

fig. 6 is a bottom view of a container according to yet another embodiment of the present invention;

figure 7 is a cross-sectional view of the container shown in figure 6,

fig. 8 is a cross-sectional view of a container according to an embodiment of the present invention.

Reference numerals:

the number of the containers 100 is such that,

a container body 10, a pot edge 11, a temperature measuring area 12,

the first insulating layer 20 is formed of a first insulating material,

a heat-generating layer 30, a heat-generating section 31, a circular arc section 311, a first transition section 312,

the first conductive layer 41, the second conductive layer 42,

the first conductive post 51, the second conductive post 52,

a second insulating layer (60) is provided,

a first electric connection part 71, a second electric connection part 72,

a lowest water line Lmin, a highest water line Lmax,

interface profile L10, interface profile L20, interface profile L30.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

A container 100 according to an embodiment of the present invention is described below with reference to fig. 1-8.

As shown in fig. 1 to 8, a container 100 according to an embodiment of the present invention includes a container body 10 and a heat generating layer 30, the heat generating layer 30 is formed outside the first insulating layer 20, the heat generating layer 30 forms at least a part of a heating circuit, and the heat generating layer 30 conducts at least a part of heat generated by itself to the container body 10.

The container 100 further comprises a first electric connection part 71 and a second electric connection part 72, the heat-generating layer 30 is electrically connected with the first electric connection part 71 and the second electric connection part 72, that is, the heat-generating layer 30 is connected with a power supply of the heating circuit through the first electric connection part 71 and the second electric connection part 72.

Wherein, first electric connection part 71 and second electric connection part 72 interval set up, and the distance between first electric connection part 71 and the second electric connection part 72 is L, and the maximum diameter of vessel 10 is D, and L satisfies the condition: l is more than or equal to 8mm and less than D. For example, the distance L between the first electric part 71 and the second electric part 72 may be 8mm, 10mm, etc.

According to the container 100 provided by the embodiment of the utility model, the heating layer 30 is formed outside the container body 10, and the first electric connection part 71 and the second electric connection part 72 are arranged, so that the heating layer 30 can be connected into the heating circuit by utilizing the first electric connection part 71 and the second electric connection part 72, and the heat generated after the heating layer 30 is electrified heats the container body 10, thereby not only facilitating uniform heating, but also improving the heating efficiency, simplifying the structure of the container 100 and reducing the production cost; by defining the distance between the first electrical part 71 and the second electrical part 72, the occurrence of short circuits is prevented.

Since the distance between the first and second electric parts 71 and 72 is too small, a short circuit phenomenon is easily generated, for example, in the case of immediately using the container 100 after washing, or in the case of water stain between the first and second electric parts 71 and 72, the water on the container 100 is easily generated to generate a short circuit. Thus, as shown in fig. 2, 4-6, in some embodiments, L satisfies the condition: 1/3D is less than or equal to L and less than D. For example, the distance L between the first electric parts 71 and the second electric parts 72 may be one third of the maximum diameter D of the vessel body 10, or the distance L between the first electric parts 71 and the second electric parts 72 may be one half of the maximum diameter D of the vessel body 10.

According to some embodiments of the utility model, at least one of first portion 71 and the second portion 72 that connects is formed and is connected electrical terminal, conducting layer or leads electrical pillar, and electrical terminal, conducting layer or lead electrical pillar are connected with layer 30 that generates heat, simple structure, easy realization. For example, as shown in fig. 6 and 7, the first electrical connection portions 71 form the first conductive pillars 51, and the second electrical connection portions 72 form the second conductive pillars 52.

In some alternative embodiments, the container body 10 is provided with handles at opposite sides thereof, and the first electric connection part 71 and/or the second electric connection part 72 are fixed to the handles of the container body 10. For example, the first electric part 71 and/or the second electric part 72 are fixed to the lower side of the handle.

In some examples, the first electrical parts 71 and the second electrical parts 72 may be respectively formed as conductive posts, the handle may be fixed to the container body 10 by a fastener such as a screw, and the first conductive posts 51 and the second conductive posts 52 may be respectively mounted to the corresponding handles.

Therefore, the first electric connecting part 71 and/or the second electric connecting part 72 are/is fixed on the handle, the mounting convenience and reliability of the first electric connecting part 71 and/or the second electric connecting part 72 are ensured, holes do not need to be formed in the wall of the container body 10 for fixing, the production process is simplified, and the production cost is reduced.

In other alternative embodiments, the first electric connection part 71 and/or the second electric connection part 72 are fixed to the rim 11 of the container body 10, for example, the first electric connection part 71 and/or the second electric connection part 72 are fixed to the lower side of the rim 11, which not only facilitates connection with an external power source, improves safety, but also facilitates simplification of the structure of the container 100.

In still other alternative embodiments, the first electric connecting part 71 and/or the second electric connecting part 72 are fixed at the bottom of the container body 10, which not only facilitates the positioning and installation of the container 100, but also improves the safety because the user does not directly touch the container during use.

In still other alternative embodiments, the first electrical parts 71 and/or the second electrical parts 72 form electrical terminals, conductive pillars, and the first electrical parts 71 and/or the second electrical parts 72 are soldered to the conductive layer connected to the heat generating layer 30. For example, the first electrical connection parts 71 and the second electrical connection parts 72 may be formed as conductive pillars, respectively, and the first conductive pillars 51 and the second conductive pillars 52 may be soldered to conductive layers (such as the first conductive layer 41 and the second conductive layer 42 described below) connected to the heat generating layer 30, respectively.

Of course, the first conductive post 51 and the second conductive post 52 may also be provided with metal elastic pieces, and the metal elastic pieces are in contact with the corresponding first conductive layer 41 and the second conductive layer 42, so as to achieve electrical connection.

As shown in fig. 2, 4 and 6, according to some embodiments of the present invention, the container 100 includes a first conductive layer 41 and a second conductive layer 42, the first conductive layer 41 is formed outside the container body 10, the first electric connection part 71 is electrically connected to the heat generating layer 30 through the first conductive layer 41, the second conductive layer 42 is formed outside the container body 10, and the second electric connection part 72 is electrically connected to the heat generating layer 30 through the second conductive layer 42.

The first conductive layer 41 and the second conductive layer 42 may be made of a material having good conductivity, such as silver or copper. By providing the first conductive layer 41 and the second conductive layer 42, the heat generating layer 30 can be electrically connected to the first electrical connection part 71 and the second electrical connection part 72.

In some embodiments, one end of the first conductive layer 41 is connected to the heat generating layer 30 and the other end is connected to the first electric connection part 71; and/or one end of the second conductive layer 42 is connected with the heat generating layer 30 and the other end is connected with the second electric connection part 72.

In some embodiments, first conductive layer 41 and/or second conductive layer 42 have a thickness of 5 μm to 50 μm. That is, at least one of the first conductive layer 41 and the second conductive layer 42 may have a thickness of 5 μm, 10 μm, 20 μm, 30 μm, 40 μm, or 50 μm, so as to prevent the conductive layer from being worn to affect the conductive effect.

In order to compromise between the conduction efficiency and the production cost, the thickness of the first conductive layer 41 and/or the second conductive layer 42 is set to 10 μm to 30 μm in some examples.

In some embodiments, as shown in fig. 2, first conductive layer 41 and/or second conductive layer 42 have a width D3 of 1mm to 15 mm. That is, the width D3 of at least one of the first conductive layer 41 and the second conductive layer 42 may be 1mm, 5mm, 8mm, 10mm, or 15mm, so as to avoid the conductive layer being too narrow and easily worn, thereby affecting the conductive effect.

In order to compromise between the conductive efficiency and the production cost, in some examples, the width D3 of the first conductive layer 41 and/or the second conductive layer 42 is set to be 5mm to 10 mm.

In order to ensure safety in use, first conductive layer 41 and second conductive layer 42 are disposed on opposite sides of container body 10 as shown in fig. 2, and since first conductive layer 41 and second conductive layer 42 are distant, short circuit is not easily caused even when water is encountered.

In order to improve the bonding force and the contact area between the conductive layers (the first conductive layer 41 and the second conductive layer 42) and the heat generating layer 30, the inventors of the present invention have proposed a structure in which the conductive layers and the heat generating layer 30 are embedded with each other. According to an embodiment of the present invention, the interface profile L20 of the first/second conductive layers 41, 42 with the heat generating layer 30 has a profile arithmetic mean deviation Ra of not less than 5 micrometers in at least one cross section perpendicular to the wall of the container 100.

In some embodiments, the interface profile L20 of the conductive layer and the heat generating layer 30 has an arithmetic mean deviation Ra of the profile of not less than 20 microns, such as 20 microns, 25 microns, 30 microns, 40 microns. In other words, taking the heat generating layer 30 having a thickness of 100 μm as an example, the arithmetic mean deviation Ra of the interface profile of the heat generating layer 30 and the conductive layer is 20%, 25%, 30%, 40% of the thickness of the heat generating layer. According to an embodiment of the present invention, the interface profile L20 of the conductive layer and the heat generating layer 30 has a maximum height Rz of not less than 8 microns.

In some embodiments, the interface profile L20 of the conductive layer and the heat generating layer 30 has a maximum height Rz of not less than 25 microns. Because the types of materials adopted by the conductive layer and the heating layer 30 are different, a structure in which the conductive layer and the heating layer 30 are embedded with each other can be formed according to the roughness of the interface, so that the bonding force between the conductive layer and the heating layer can be effectively improved, the contact area can be effectively increased, and the transmission efficiency of current can be improved.

According to some embodiments of the present invention, the container 100 further includes a first insulating layer 20, the first insulating layer 20 is formed outside the container body 10, and the heat generating layer 30 is formed on a surface of the first insulating layer 20 away from the container body 10.

Therefore, the first insulating layer 20 is formed on the outer surface of the container body 10, the heat generating layer 30 is formed on the outer surface of the first insulating layer 20, and the container body 10 is heated by the heat generated after the heat generating layer 30 is electrified, so that not only can the heating efficiency be improved, but also the structure of the container 100 is simplified, and the production cost is reduced, and moreover, the heat transfer is guided in a transition manner through the first insulating layer 20, so that the uniformity of the heat transfer from the heat generating layer 30 to the container body 10 can be improved, the phenomenon of heat concentration of the container body 10 is prevented, and the uniformity and the safety of the heat conduction of the container body 10 are improved.

In some embodiments, the first insulating layer 20 is sprayed on the outer surface of the container body 10, and the heat generating layer 30 is sprayed on the surface of the first insulating layer 20 away from the container body 10.

The container body 10 is generally made of aluminum, iron, aluminum alloy, iron alloy, 304 stainless steel, 430 stainless steel, or other composite plate materials, such as aluminum and stainless steel. In this embodiment, the first insulating layer 20 may be a coating formed of at least one of alumina, silica, and aluminum nitride, or may be another temperature-resistant insulating layer, and the heat generating layer 30 may be an iron-chromium-aluminum-yttrium alloy coating, or may be another heat generating thin film material.

As shown in fig. 8, in some embodiments, the interface profile L10 of the container body 10 and the first insulating layer 20 has an arithmetic mean deviation Ra of the profile not less than 20 micrometers in at least one cross section perpendicular to the walls of the container 100.

In some examples, the interface profile L10 of the container body 10 and the first insulating layer 20 has an arithmetic mean deviation Ra of the profile of not less than 30 microns, such as 40 microns, 50 microns, 60 microns. In other words, taking the first insulating layer 20 with a thickness of 200 μm as an example, the arithmetic mean deviation Ra of the interface profile between the first insulating layer 20 and the container body 10 is 20%, 25%, 30% of the thickness of the insulating layer.

In some examples, the interface profile L10 of the container body 10 and the first insulating layer 20 has a maximum height Rz of not less than 25 microns. According to an embodiment of the present invention, the interface profile L10 of the container body 10 and the first insulating layer 20 has a maximum height Rz of not less than 35 microns.

Thus, by increasing the roughness of the interface between the first insulating layer 20 and the container body 10, the bonding force between the first insulating layer 20 and the container body 10 can be effectively increased under the same spraying conditions. Specifically, according to the roughness of the interface, the first insulating layer 20 may be embedded in the container body 10, so that the bonding force between the two may be effectively improved. In addition, under the condition that the cross section between the container body 10 and the first insulating layer 20 has a certain roughness, the outer surface of the first insulating layer 20 formed to be apart from the container body 10 also has a certain roughness, so that the coupling force between the heat generating layer 30 and the first insulating layer 20 sprayed on the outer surface is further enhanced, and further, the coupling force between the heat generating layer 30 and a conductive layer described below is facilitated, the coupling area between the two is increased, and the current transfer efficiency is improved.

The surface of the container body 10 may be roughened as needed before the first insulating layer 20 is provided, for example, by sandblasting or sanding, preferably sandblasting, so that the degree of roughness can be easily controlled, and for example, sandblasting with a particle size of 50 to 100 μm may be performed at a pressure of 0.8 to 1.5MPa for 10 to 200 seconds.

In some embodiments, the arithmetic mean deviation Ra of the interface profile of the first insulating layer 20 with the container body 10 is greater than the arithmetic mean deviation Ra of the interface profile of the first insulating layer 20 with the heat generating layer 30, and is greater than the arithmetic mean deviation Ra of the interface profile of the heat generating layer 30 with the conductive layer. Accordingly, the bonding force between the layers can be increased, the heat generated from the heat generating layer can be rapidly transferred to the insulating layer, the efficiency and uniformity of the heat transfer from the first insulating layer 20 to the container body 10 can be improved, the thermal stress between the container body 10 and the first insulating layer 20 can be reduced, and the delamination between the container body 10 and the first insulating layer 20 can be prevented.

It will be understood by those skilled in the art that the terms arithmetic mean deviation Ra and maximum height Rz of the profile as used herein are common parameters for evaluating the surface profile of an object, and those skilled in the art can perform detection by well-known means after acquiring an interface image, for example, the national standard GB/T1031-: the arithmetic mean deviation Ra of the profile is the arithmetic mean of the absolute values of the distances from each point on the measured profile to the datum line in the sampling length; the maximum height Rz is the sum of the average of the peak heights of the five maximum profiles and the average of the valley bottoms of the five maximum profiles over the measured profile over the sample length.

In some embodiments, the interface profile L30 of the heat generating layer 30 and the first insulating layer 20 has an arithmetic mean deviation Ra of the profile of not less than 5 micrometers in at least one cross section perpendicular to the wall of the container 100.

For example, as shown in fig. 8, the interface profile L30 of the heat generating layer 30 and the first insulating layer 20 has an arithmetic mean deviation Ra of the profile not less than 20 micrometers, such as 20 micrometers, 25 micrometers, 30 micrometers, 40 micrometers. In other words, taking the heat generating layer 30 having a thickness of 100 μm as an example, the arithmetic mean deviation Ra of the interface profile of the heat generating layer 30 and the first insulating layer 20 is 20%, 25%, 30%, 40% of the thickness of the heat generating layer 30.

In some embodiments, the interface profile L30 of the heat generating layer 30 and the first insulating layer 20 has a maximum height Rz of not less than 8 micrometers. In some embodiments, the interface profile L30 of the heat generating layer 30 and the first insulating layer 20 has a maximum height Rz of not less than 25 micrometers.

In some optional embodiments, the heat generating layer 30 is located on the bottom wall of the container body 10, and after the power is applied, the bottom wall of the container body 10 is heated by the heat generating layer 30, so as to heat the food.

In other alternative embodiments, a portion of the heat generating layer 30 is located at the bottom wall of the container body 10 and another portion is located at the lower portion of the side wall of the container body 10. That is, at least a portion of the heat generating layer 30 extends to the side wall of the container body 10, thereby increasing the heat receiving area of the container body 10 and improving the heating efficiency.

Wherein, the heating layer 30 can include a plurality of heating sections 31, and a plurality of heating sections 31 form in the different regions of vessel 10, and a plurality of heating sections 31 are established ties or are parallelly connected to make the heating layer 30 lay in the outside of vessel 10, increased heating area, improved heating efficiency.

According to some embodiments of the present invention, the heat generating layer 30 is formed in one or more combinations of a curved shape, a zigzag shape, and a straight shape. For example, the heat generating layer 30 may be formed in a combined shape of a circular arc shape and a straight line shape, and the heat generating layer 30 is laid on the outer surface of the first insulating layer 20 on the container body 10, thereby achieving uniform heating.

According to some embodiments of the present invention, the thickness of the heat generating layer 30 is set to 1 μm to 100 μm. For example, the thickness of the heat generating layer 30 may be 1 μm, 10 μm, 30 μm, 50 μm, 80 μm, 100 μm.

By arranging the heat generating layer 30 with the thickness within the above range, the phenomenon of layer separation caused by thermal stress between the heat generating layer 30 and the first insulating layer 20 can be reduced, and the contact area between the heat generating layer 30 and the first insulating layer 20 can be increased, so that the heat transfer to the container body 10 through the first insulating layer 20 can be accelerated, further, by adopting the mutually embedded transition connection, the heat transfer efficiency between the two interfaces can be increased due to the fact that the heat generated by the heat generating layer 30 is more, the heat conduction speed of the heat generating layer 30 is higher, the heat conduction speed of the first insulating layer 20 is relatively lower, and the mutually embedded transition structure connection is arranged, so that the contact area is increased, on one hand, the phenomenon of large thermal stress caused by the overlarge temperature difference between the heat generating layer 30 and the first insulating layer 20 is prevented, the phenomenon of separation between the heat generating layer 30 and the first insulating layer 20 is prevented, on the other hand, the corrosion phenomenon caused by thermal stress of the, the service life of the heating layer 30 is prolonged, and further, the heat of the heating layer 30 can be quickly led into the first insulating layer 20, so that the heat conduction efficiency of the first insulating layer 20 is improved, and the heating efficiency of the container body 10 is improved.

In some embodiments, the thickness of the heat generating layer 30 is 20 μm to 30 μm, for example, the thickness of the heat generating layer 30 is 20 μm, 25 μm, 30 μm.

According to some embodiments of the present invention, the heat generating layer 30 includes a plurality of heat generating sections 31, and the plurality of heat generating sections 31 are connected in series. That is, the plurality of heating sections 31 are connected end to end in sequence, the head end of the first heating section 31 of the plurality of heating sections 31 is adapted to be connected to the power input terminal of the heating circuit, and the tail end of the last heating section 31 of the plurality of heating sections 31 is adapted to be connected to the power output terminal of the heating circuit.

Thus, by connecting the plurality of heat generation sections 31 in series, a circuit can be formed when the power is supplied. The heating section 31 may be one or two of a straight line shape and a circular arc shape, so that the heating layer 30 is beautiful in arrangement, simple in manufacturing process and high in utilization rate.

In some embodiments, in the plurality of heat-generating sections 31, one part of the heat-generating section 31 is a circular arc section 311, the other part of the heat-generating section 31 is a first transition section 312, and the center of the circle corresponding to the plurality of circular arc sections 311 is the center of the bottom wall of the container body 10.

Among the plurality of circular arc segments 311, at least a part of the circular arc segments 311 are disposed at intervals in a radial direction of an imaginary circle having a center at the center of the bottom wall of the container body 10, that is, a circle corresponding to at least a part of the plurality of circular arc segments 311 is concentrically arranged.

In the extending direction of the heat generating layer 30, a plurality of circular arc sections 311 are arranged at intervals, a plurality of first transition sections 312 are arranged at intervals, two adjacent circular arc sections 311 are connected through the first transition section 312, and two adjacent first transition sections 312 are connected through the circular arc sections 311.

That is to say, a plurality of arc segments 311 arranged at intervals are used as the main body of the heat generating layer 30, and the plurality of first transition segments 312 are connected in series to form a loop when being electrified, and at least a part of the plurality of arc segments 311 are concentrically arranged, so that uniform heat generation can be realized on the circumference of each arc segment 311, and the heat generating layer 30 is beautiful in arrangement and high in utilization rate.

In some examples, the first transition section 312 is a straight or arcuate section. Specifically, as shown in fig. 2, in the present embodiment, two adjacent circular arc segments 311 are connected by a straight line segment. In another embodiment, two adjacent circular arc segments 311 are connected by a circular arc transition.

In some embodiments, among the plurality of heat generation sections 31, one portion of the heat generation section 31 is a straight section, and the other portion of the heat generation section 31 is a second transition section. At least a part of the flat sections are arranged in parallel in the plurality of flat sections; and/or at least a portion of the straight segments are co-linear and spaced apart.

Wherein, on the extending direction of layer 30 generates heat, a plurality of straight section interval arrangements, a plurality of second changeover portion interval arrangements, connect through the second changeover portion between two adjacent straight sections, connect through the straight section between two adjacent second changeover portions.

That is to say, the straight section of a plurality of interval arrangements is established ties together through a plurality of second changeover portions as the main part of layer 30 that generates heat, can form the return circuit during the circular telegram, and a plurality of straight section preparation simple processes to be favorable to increasing the distribution area of layer 30 that generates heat, the high-usage, thereby improve heating efficiency.

In some examples, the second transition section forms an arc section and the circle center corresponding to the arc section is the center of the bottom wall of the container body 10; and/or the second transition section forms a straight section. For example, two adjacent straight sections are connected by a circular arc section and a straight section.

Since the current always flows along the path with the shortest distance, if the corner formed between two adjacent heating sections 31 is a right angle, especially the current is easily accumulated at the position where the inner corner is the right angle, which results in the right angle current being too high, the local temperature of the heating layer 30 is too high if light, and the local heating section 31 of the heating layer 30 is easily burned out if heavy, and even a short circuit is easily caused. Therefore, in some embodiments, two adjacent heat generation sections 31 are connected in a circular arc transition manner. Of course, the adjacent two heating sections 31 may be connected in a straight transition manner.

In order to prevent the heating section 31 from being worn or damaged to affect the heating effect on the container body 10, in some embodiments, as shown in fig. 2, the width D2 of the heating section 31 is set to be 0.1mm to 30 mm. For example, the width D2 of the heat emitting segment 31 may be 0.1mm, 10mm, 15mm, 20mm, 25mm, 30 mm. In some examples, the width D2 of the heat emitting segment 31 is set to be 5mm to 12 mm.

It should be noted that too large a distance D1 between two adjacent heat generating segments 31 leads to poor uniformity of heating temperature, too small a distance D1 between two adjacent heat generating segments 31 leads to small creepage distance for the first heat generation, and if there is a foreign matter between two adjacent heat generating segments 31 or the environment is wet, an arc is easily generated, thereby damaging the heat generating layer 30.

Therefore, in some embodiments, the distance D1 between two adjacent heat generating segments 31 arranged at intervals is set to be 0.1mm to 20 mm. For example, the distance D1 between two adjacent spaced-apart heat emitting segments 31 may be 0.1mm, 5mm, 8mm, 12mm, 15mm, 20 mm.

Specifically, as shown in fig. 2, in the present embodiment, in the radial direction of the bottom wall of the container body 10, the distance between two adjacent spaced circular arc segments 311 is D1, and the widths of the circular arc segments 311 and the first transition section 312 are D2.

In some examples, the distance D1 between two adjacent spaced-apart heat emitting segments 31 is 5mm to 10mm, for example, the distance D1 between two adjacent spaced-apart heat emitting segments 31 may be 5mm, 7mm, 10 mm.

Generally, when the container 100 is used for cooking, it is necessary to ensure that the water level in the container 100 meets the use condition, the water level in the container 100 is too low, dry burning is easy to occur, the water level in the container 100 is too high,the heating time is long and the heating power requirement is high. Therefore, in order to satisfy the use requirements of different users, it is ensured that the container 100 will not be dry-burned due to too low water level and will not cause the problem of too long heating time due to too high water level, as shown in fig. 3, according to some embodiments of the present invention, the height of the container body 10 is H, and in the height direction of the container body 10 (the up-down direction shown in fig. 3), the distance between the upper portion of the heat generating layer 30 (the contour line located at the highest position) and the bottom of the container body 10 is H₁The distance between the highest water level line Lmax of the container body 10 and the bottom of the container body 10 is H₂，5mm≤H1≤H₂. For example, the distance H between the upper portion of the heat generating layer 30 and the bottom of the container body 10₁At a height of 5mm or corresponding to the maximum water line Lmax.

In some embodiments, the distance between the lowest water line Lmin of the container body 10 and the bottom of the container body 10 in the height direction of the container body 10 is H₃The distance between the water level line of two cups of rice of the container body 10 and the bottom of the container body 10 is H₄，1/2H₃≤H₁≤H₄。

In some embodiments, the distance between the lowest water line Lmin of the container body 10 and the bottom of the container body 10 in the height direction of the container body 10 is equal to the distance between the water line of one cup of the container body 10 and the bottom of the container body 10, 1/2H₃≤H₁≤H₃。

For example, the distance H between the upper portion of the heat generating layer 30 and the bottom of the container body 10₁Is 1/2H₃(ii) a Alternatively, the distance H between the upper part of the heat generating layer 30 and the bottom of the container body 10₁The height corresponding to the lowest water line Lmin.

In order to better secure the insulating effect between the heat generating layer 30 and the container body 10, the thickness of the first insulating layer 20 is set to 10 μm to 500 μm. For example, the thickness of the first insulating layer 20 may be 10 μm, 100 μm, 200 μm, 300 μm, 400 μm, 500 μm, or the like.

In some embodiments, the thickness of the first insulating layer 20 is 200 μm to 400 μm, which not only ensures the insulating effect between the heat generating layer 30 and the container body 10, but also ensures that the material cost is not too high, thereby achieving the balance between the insulating effect and the cost.

In order to prevent a user from getting an electric shock when using the container 100, an insulating structure is required to cover the outer surface of the heat generating layer 30. In some alternative embodiments, the container 100 further includes a second insulating layer 60, and the second insulating layer 60 is formed at least on an outer surface of the heat generating layer 30. Here, the second insulating layer 60 may be the same as the first insulating layer 20 or may be different from the first insulating layer 20, and for example, the second insulating layer 60 may be an alumina coating.

Wherein the thickness of the second insulating layer 60 is 10 μm to 500 μm. For example, the thickness of the second insulating layer 60 may be 10 μm, 100 μm, 300 μm, 400 μm, 500 μm, or the like. In some embodiments, the second insulating layer 60 has a thickness of 200 μm to 400 μm.

In other alternative embodiments, the container 100 further includes an insulating case (not shown) that surrounds the container body 10 formed with the heat generating layer 30, thereby preventing an electric shock from occurring. Wherein, the insulating shell can be made of insulating materials such as plastics.

Wherein, the outer surface of the container body 10 is provided with a temperature measuring area 12 positioned in the middle of the bottom and a spraying area surrounding the temperature measuring area. Since the middle part of the bottom wall of the container body 10 is provided with the temperature measuring area 12, the temperature controller can detect the temperature of the area. Therefore, in the present embodiment, the temperature measuring region 12 of the bottom wall of the container body 10 does not need to be provided with the heat generating layer 30, and the heat generating layer 30 is located in the spraying region.

A cooking appliance (not shown) according to an embodiment of the present invention includes the container 100 according to the above-described embodiment. The cooking utensil can be an electric cooker, a pressure cooker and the like. Because the container 100 according to the embodiment of the present invention has the above technical effects, the cooking utensil according to the embodiment of the present invention also has the above technical effects, i.e. has the advantages of simple structure, low production cost, uniform heating, safe use, etc.

According to some embodiments of the present invention, the cooking appliance further comprises a base and a cover, the container is disposed in the base, and the cover is disposed on the base for opening and closing the opening of the container body. Furthermore, the cover body or the base is provided with a first electric connection part and a second electric connection part, the first electric connection part and the second electric connection part are suitable for being connected with a power supply of the heating circuit, and the heating layer is electrically connected with the first electric connection part and the second electric connection part under the condition that the cover body is in a state of closing the opening of the container body, so that the heating circuit forms a loop and the heating purpose is realized.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Other constructions and operations of the container 100 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (21)

1. A container, comprising:

a container body;

the heating layer is formed on the outer side of the container body, the heating layer forms at least one part of a heating circuit, and the heating layer conducts at least one part of heat generated by the heating layer to the container body;

the heating layer is electrically connected with the first electric connection part and the second electric connection part,

wherein, first portion of connecting with the distance between the second portion of connecting is L, the maximum diameter of container body is D, L satisfies the condition: l is more than or equal to 8mm and less than D.

2. The container according to claim 1, wherein L satisfies the condition: 1/3D is less than or equal to L and less than D.

3. The container according to claim 1, wherein at least one of the first and second electrical parts forms an electrical terminal, a conductive layer, or a conductive pillar, which is connected with the heat generating layer.

4. The container according to claim 1, wherein the first electrical connection part and/or the second electrical connection part is fixed to a handle of the container body; alternatively, the first and second electrodes may be,

the first electric connection part and/or the second electric connection part are/is fixed on the pan edge of the container body; alternatively, the first and second electrodes may be,

the first electric connecting part and/or the second electric connecting part are/is fixed at the bottom of the container body; alternatively, the first and second electrodes may be,

the first electric connecting part and/or the second electric connecting part form an electric terminal and a conductive column, and the first electric connecting part and/or the second electric connecting part are/is welded on a conductive layer connected with the heating layer.

5. The container according to claim 1, comprising:

the first conducting layer is formed on the outer side of the container body, and the first electric connection part is electrically connected with the heating layer through the first conducting layer;

the second conducting layer is formed on the outer side of the container body, and the second electric connection part is electrically connected with the heating layer through the second conducting layer.

6. The container according to claim 5, wherein one end of the first conductive layer is connected to the heat generating layer and the other end is connected to the first electric connection part; and/or one end of the second conducting layer is connected with the heating layer and the other end of the second conducting layer is connected with the second electric connection part.

7. The container of claim 1, further comprising: the first insulating layer is formed on the outer side of the container body, and the heating layer is formed on the surface of the first insulating layer far away from the container body.

8. The container according to claim 7, wherein the first insulating layer is sprayed on an outer side surface of the container body, and the heat generating layer is sprayed on a surface of the first insulating layer away from the container body.

9. The container according to claim 1, wherein the heat generating layer includes a plurality of heat generating segments formed at different regions of the outside of the container body, and the plurality of heat generating segments are connected in series or in parallel.

10. The container according to claim 1, wherein the heat-generating layer is formed in one or more combinations of a curved shape, a polygonal shape, and a linear shape.

11. The container according to claim 1, wherein the heat generating layer comprises a plurality of heat generating segments, the plurality of heat generating segments being connected in series.

12. The container according to claim 11, wherein two adjacent heating sections are connected in a circular arc or straight line transition in the extending direction of the heating layer.

13. The container according to claim 11, wherein among the plurality of heat generation sections, a part of the heat generation sections are circular arc sections and another part of the heat generation sections are first transition sections, and the centers of circles corresponding to the plurality of circular arc sections are the center of the bottom wall of the container body,

at least one part of the arc sections are arranged at intervals along the radial direction of an imaginary circle, the center of the imaginary circle is the center of the bottom wall of the container body,

in the extending direction of the heating layer, two adjacent arc sections are connected through the first transition section, and the two adjacent arc sections are connected between the first transition sections.

14. The container of claim 13, wherein the first transition section is a straight or arcuate section.

15. The container according to claim 11, wherein in each of the heat generation sections, a part of the heat generation section is a straight section and another part of the heat generation section is a second transition section,

in a plurality of said flat sections, at least a portion of said flat sections are arranged in parallel; and/or, at least a portion of said straight sections are co-linear and spaced apart,

in the extending direction of the heating layer, two adjacent straight sections are connected through the second transition section, and two adjacent second transition sections are connected through the straight sections.

16. The container of claim 15, wherein the second transition section forms an arc section and the center of the circle corresponding to the arc section is the center of the bottom wall of the container body; and/or the second transition section forms a straight line segment.

17. The container according to claim 7 or 8, wherein the first insulating layer is at least one of an aluminum oxide coating, a silicon oxide coating, and an aluminum nitride coating, and the heat generating layer is an iron-chromium-aluminum-yttrium alloy coating.

18. The container according to any one of claims 1 to 16, further comprising a second insulating layer formed at least on a surface of the heat generating layer remote from the container body; alternatively, the container further comprises: the insulating shell wraps the container body formed with the heating layer.

19. A cooking appliance, characterized in that it comprises a container according to any one of claims 1 to 18.

20. The cooking appliance of claim 19, further comprising:

the container is arranged in the base;

the cover body is arranged on the base and used for opening and closing the opening of the container body.

21. The cooking appliance of claim 20, wherein the cover or the base has a first electrical connection portion and a second electrical connection portion adapted to connect to a power source of the heating circuit, the first electrical connection portion being electrically connected to the first electrical connection portion and the second electrical connection portion being electrically connected to the second electrical connection portion when the cover is in a state of closing the opening of the container body.

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