CN223987801U

CN223987801U - Pot and cooking utensil

Info

Publication number: CN223987801U
Application number: CN202422654208.7U
Authority: CN
Inventors: 张磊; 厉江; 吕华
Original assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Current assignee: Zhejiang Supor Electrical Appliances Manufacturing Co Ltd
Priority date: 2024-10-31
Filing date: 2024-10-31
Publication date: 2026-03-13
Anticipated expiration: 2034-10-31

Abstract

This utility model discloses a pot inner liner and a cooking utensil. The pot inner liner includes an outer pot base, an inner pot base, and at least one partial functional body. The outer pot base covers at least the bottom of the inner pot base to form a pot body with a receiving cavity, and at least the inner pot base is a heat conductor. At least one partial functional body is connected between the outer pot base and the inner pot base and is located at least at the bottom of the pot body. Two adjacent partial functional bodies or adjacent portions of a single partial functional body are spaced apart in at least one of the radial, circumferential, and height directions of the pot body. A cavity is formed between the portion of the outer pot base not connected to the partial functional body and the inner pot base to create a local temperature difference region on the inner surface of the pot inner liner. When the pot inner liner is heated, a significant temperature gradient can be generated on the inner surface of the pot inner liner. The temperature gradient promotes faster and more intense heat convection in the pot, resulting in more thorough boiling and churning of the liquid and food, more even heating of the food, and better consistency in the cooking effect.

Description

Pot and cooking utensil

Technical Field

The application relates to the technical field of kitchen appliances, in particular to a pot liner and a cooking utensil.

Background

Existing cooking appliances such as ordinary electric cookers, IH electric cookers, electromagnetic cookers, and the like are generally equipped with heatable cookers. These bladders are typically constructed of single-, double-, or multi-layered substrates, the surfaces of which are sometimes provided with a coating. However, the thickness of each layer, whether the substrate or the coating, is substantially the same at each location of the bladder. The whole thickness of the pot liner is basically equal, so that the inner surface and the outer surface of the pot liner are flat and the heat conduction is uniform. When the pot liner is heated, the whole heat transfer of the pot liner is uniform, the temperature of the inner surface of the pot liner in the same height area is uniform, the generated convection flow rate is low, the convection area is less, the boiling and rolling of food materials are insufficient, and the consistency of the cooking effect of food is poor.

Accordingly, there is a need for a pot and a cooking appliance that at least partially address the above problems.

Disclosure of utility model

A series of concepts in a simplified form are introduced in the summary of the utility model, which will be described in further detail in the detailed description. The summary of the utility model is not intended to limit the critical and essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

To at least partially solve the above problems, the present utility model provides a pot for a cooking appliance, the pot comprising:

An outer pan base;

An inner pan base body which is positioned at the inner side of the outer pan base body and covers at least the bottom of the inner pan base body to form a pan body with a containing cavity, at least the inner pan base body is a heat conductor, and

At least one local functional body connected between the outer pot base body and the inner pot base body and positioned at least at the bottom of the pot body,

The adjacent two local functional bodies or the adjacent part of the single local functional body is arranged at intervals in at least one of the radial direction, the circumferential direction and the height direction of the pot body, and a cavity is formed between the part of the outer pot base body which is not connected by the local functional bodies and the inner pot base body so as to form a local temperature difference area on the inner surface of the pot liner.

According to the scheme, heat of the outer pot substrate can be transferred to the inner pot substrate through the local functional body, but is blocked by the cavity at the interval of the local functional body, so that the inner surface of the pot liner can have a first temperature zone corresponding to the local functional body and a second temperature zone corresponding to the cavity at the interval of the local functional body. When the pot liner is heated, the temperature of the first temperature zone of the pot liner can be obviously higher than that of the second temperature zone, so that a local temperature difference zone is formed between the two zones, and obvious temperature gradient can be generated. The temperature gradient is utilized to promote the heat convection in the pot to be fast and severe, so that the boiling and rolling of the liquid and the food materials in the pot are more sufficient, the food materials are heated more uniformly, and the consistency of the cooking effect of the food is better.

And the local functional body is arranged in the pot body, so that the substrate forming the inner surface and the substrate forming the outer surface of the pot body are respectively integrated components, and gaps are prevented from being generated at the inner surface or the outer surface of the pot body due to the combination of the local functional body, and the problems that the gaps are easy to be enlarged, the edges of the gaps are raised, the coatings at the gaps are easy to fall off and the like in the use process are solved. Therefore, the pot liner with the surface having no gap and multiple local temperature difference areas is provided, the pot liner is provided with a multi-layer basic structure, the local functional body of the middle layer at least plays a role in heat transfer, and the cavity of the middle layer plays a role in heat blocking, so that the generation of the local temperature difference areas is realized.

Optionally, the local functional body is a heat conductor or a magnetizer. According to the scheme, the local functional body can transfer heat of the outer pot base body to the inner pot base body through heat conduction when being a heat conductor, alternatively, the local functional body can generate heat under the action of partial magnetic lines of force in a magnetic field when being a magnetizer and simultaneously transfer the heat of the outer pot base body to the inner pot base body.

Optionally, the outer pot base body is a magnetizer, and the local functional body is a heat conductor or a magnetizer. According to the scheme, the outer pot base body can generate heat through electromagnetic heating, the local functional body can conduct heat or generate heat, and the outer pot base body is applicable to electromagnetic heating cooking appliances, alternatively, the outer pot base body is a heat conductor, and the local functional body is a heat conductor. According to this scheme, the outer pot base member can absorb the heat from heating device, and local function body can heat conduction, is applicable to electrical heating cooking utensil.

Optionally, the cavity is filled with air at a pressure below atmospheric pressure. According to the scheme, the pressure generated by the expansion of air heated can be prevented from extruding and deforming the pot body, so that the risks of cracking and explosion of the pot body are avoided, and the product safety of the pot liner is improved. The vacuum degree of the cavity is 0.001-0.1 pa. According to the scheme, the air quantity in the cavity is moderate, so that the risks of deformation, explosion and the like of the pot body caused by the heated expansion of the air can be avoided, the processing of the pot body can be ensured not to be too difficult due to the requirement of the vacuum degree, and the production and the manufacture of the pot liner are facilitated.

Optionally, the outer pot substrate covers the side part and the bottom of the inner pot substrate, the cavity comprises a first cavity for forming a local temperature difference area and a second cavity for side part heat preservation, the first cavity is formed at the interval of the local functional body, and the second cavity is positioned at the side part of the pot body. According to the scheme, the pot liner has the effect of unevenly heating and boiling at the bottom or the bottom and part of the side parts due to the action of the first cavity, and the pot liner has the heat preservation effect at the side parts due to the action of the second cavity, so that heat of the inner side of the pot liner is prevented from radiating from the side parts of the pot liner, and the cooking temperature of food in the pot liner is ensured. The pot liner of this scheme is applicable to the cooking utensil that does not have lateral part heating device.

The side part of the pot body is provided with a first height H1, the second cavity is provided with a second height H2, wherein H2/H1 is more than or equal to 30%, and H1 is 50-100 mm. According to the scheme, the height of the second cavity is moderate, so that the area occupation ratio of the second cavity on the side part of the pot body can ensure that the side part of the pot body has a good heat preservation effect, and in addition, the processing difficulty of the top end closing position of the pot body can be avoided in the range of H1.

Optionally, the dimension N1 of the first cavity in the thickness direction of the pot body is 0.1 mm-5 mm. The dimension N2 of the second cavity in the thickness direction of the pot body is more than or equal to 0.1mm and less than or equal to 10mm. According to the scheme, the gap of the first cavity is moderate, a certain thermal resistance effect can be achieved, the temperature difference formed on the inner surface of the pot liner is in a desired range, strong convection can be formed, the gap of the second cavity is moderate, a certain heat preservation effect can be achieved, side heat dissipation is prevented, the thickness of the pot body is moderate, the increase of the whole size of the pot liner can be avoided, the material cost is low, the fact that the pot liner is too heavy is avoided, and the use of a user is facilitated.

Optionally, a distance s is provided between two adjacent local functional bodies or adjacent parts of the single local functional body, and the distance s is 5 mm-85 mm. According to the scheme, the inner surface of the pot liner can obtain the temperature gradient of the expected temperature range in the local temperature difference area, the liquid and food in the pot can be rolled more fully, the cooking requirement can be met, and the consistency of the cooking effect of food is better.

Optionally, the thickness of the local functional body is 0.1 mm-5 mm. According to the scheme, the gaps of the cavities at the intervals of the local functional bodies are in an expected range, the temperature difference formed on the inner surface of the pot liner is ensured to be in the expected range, strong convection is formed, the whole heat transfer path is moderate, and the heat efficiency is high.

Optionally, the pot body is provided with a function setting area for arranging the local functional body, and the area ratio of the local functional body in the function setting area is 40% -80%. According to this scheme, the area of local functional body occupies the setting more greatly to the area that the area of the cavity of local functional body interval department occupies less, when making the holistic heat of pot courage can satisfy the culinary art demand, guarantees overall heating effect and local convection effect.

Optionally, the at least one partial function comprises a plurality of first partial functions arranged along a circumferential array of the pot and each of which has a width in the circumferential direction that gradually increases from a radial outward direction and/or a height direction of the pot.

According to the scheme, a plurality of local functional bodies comprising the fan-shaped and the gradually-widened patterns similar to the fan-shaped can be formed on the pot liner. Compared with other shapes such as a ring shape, a round shape, a polygonal shape and the like, the local functional body with the gradually-widened pattern has the structural characteristics that the local functional body is narrower closer to the bottom center of the pot liner and wider away from the bottom center of the pot liner, so that the local functional body can cover more area of the pot liner at least at the bottom of the pot liner, the adjusting area of the local functional body on the heat distribution of the pot liner is larger, the coverage area of a local temperature difference area is larger, and the effect of non-uniform heating and boiling in a large range can be realized. And when the local functional body forms the inner surface or the outer surface of the pot body, the appearance of the product can be molded based on the gradually-widened graph, so that the appearance is simpler and more attractive as a whole, and the visual effect is better.

Optionally, the at least one local functional body comprises a second local functional body with a ring shape or a round shape, the second local functional body is located at the bottom middle part of the pot body, and the narrow head ends of the plurality of first local functional bodies are all connected with the second local functional body.

According to the scheme, the first partial functional bodies can be positioned based on the second partial functional bodies, so that the partial functional materials are easily formed on the pot body, the appearance of the product is simpler and more attractive as a whole, and the visual effect is better.

Optionally, the pot body comprises a pot body bottom and a pot body side part which are connected, at least the pot body bottom is constructed into an arc shape or a spherical shape, the local functional body is at least arranged at the pot body bottom, the projection of the local functional body on the horizontal plane has a first maximum diameter D1, and the pot body has a second maximum diameter D2 at the pot body side part, wherein D1/D2 is more than or equal to 40%.

According to this scheme, when there is not lateral part heating device, through the local functional body, the pot body all has inhomogeneous heating's effect from the bottom to the partial lateral part department of certain height, and the food of this partial lateral part department also can fully roll, realizes the even heating of edible material. When the local functional body is a magnetizer or a heat conductor, the heating area is larger and can reach partial side parts, so that food on the side parts can be prevented from being pinched, the minimum food pinch group standard is met, and the cooking effect is improved.

According to another aspect of the present application, there is provided a cooking appliance comprising a heating device for heating the inner container of any one of the above aspects and the inner container.

According to the scheme, when the pot liner is heated, the pot liner with the local functional body can generate obvious temperature gradient on the inner surface of the pot liner, and the temperature gradient is utilized to promote the heat convection in the pot to be quick and severe, so that the boiling and rolling of liquid and food materials in the pot are more sufficient, the food materials are heated more uniformly, and the consistency of the cooking effect of food is better.

Optionally, the heating device comprises a bottom heating device positioned at the bottom of the pot liner and/or a side heating device positioned at the side of the pot liner, and the local functional body of the pot liner is arranged in the projection area of the bottom heating device and/or the side heating device on the pot liner.

According to the scheme, the hot area or the magnetic field generated by the bottom heating device and/or the side heating device can completely cover the area with the local functional body, so that the boiler liner generates heat convection in the coverage area of the hot area or the magnetic field, the heating efficiency is high, and the non-uniform heating boiling effect is good.

Drawings

The following drawings are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification. Embodiments of the present utility model and their description are shown in the drawings to explain the principles of the utility model.

In the accompanying drawings:

FIG. 1 is a cross-sectional view of a bladder according to a preferred embodiment of the present application;

FIG. 2 is another cross-sectional view of the bladder of FIG. 1;

FIG. 3 is a cross-sectional view of the partial functional body of FIG. 1;

FIG. 4 is a perspective view of the partial functional body of FIG. 1;

FIG. 5 is a partial cross-sectional view of the bladder shown in FIG. 1;

FIG. 6 is a cross-sectional view of the bladder of FIG. 1, showing diameters D1 and D2, etc.;

FIG. 7a is a bottom view of the bladder of FIG. 1;

FIG. 7b is a bottom view of a modified example of the bladder shown in FIG. 1;

Fig. 8 is another bottom view of the bladder shown in fig. 7, with the function setting area schematically shown in phantom.

Reference numerals illustrate:

1 pot liner 2 pot body

3 Bottom 4 side parts of the pot body

5 Accommodating cavity

11 Outer pot base 12 inner pot base

13 Local functional body 14 cavity

15 First cavity 16 second cavity

17 First local function 18 second local function

S1 function setting area S2 non-function setting area

Detailed Description

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

In the following description, a detailed description will be given for the purpose of thoroughly understanding the present utility model. It will be apparent that embodiments of the utility model may be practiced without limitation to the specific details that are familiar to those skilled in the art. Preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to these detailed descriptions.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is intended to include the plural unless the context clearly indicates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Ordinal numbers such as "first" and "second" cited in the present utility model are merely identifiers and do not have any other meaning, such as a particular order or the like. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component".

It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like are used herein for illustrative purposes only and are not limiting.

Exemplary embodiments according to the present utility model will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.

The utility model provides a cooking utensil, which comprises a pot liner and a heating device for heating the pot liner. The cooking appliance may be, for example, an electric cooking appliance for electric heating such as a general electric cooker, an electric heating furnace equipped with a pot liner, or a pressure cooker, and the heating device is an electric heating device such as a heating plate. The cooking utensil can be, for example, an electromagnetic cooking utensil for electromagnetic heating such as an IH electric cooker, an electromagnetic oven with a pot liner, an IH pressure cooker and the like, wherein the pot liner comprises a magnetic conductive material, and the heating device is an electromagnetic heating device such as a coil panel and the like. The cooking device may have various functions such as cooking porridge, in addition to the function of cooking rice.

The cooking utensil for electric rice cooker comprises a cooker body and a cover body. The pot body is provided with a cylindrical pot container receiving part. The pot liner can be fixedly arranged at the pot liner accommodating part, or can be freely put into the pot liner accommodating part or taken out from the pot liner accommodating part, so that the pot liner can be conveniently cleaned. The pot is usually made of a metal material and has a circular opening in its upper surface for holding the material to be heated, such as rice, soup, etc. The pot body comprises an electromagnetic heating device, such as an electromagnetic coil disc, for heating the pot liner.

The cover has a shape substantially corresponding to the pot. The cover body is arranged on the cooker body in an openable and closable manner, specifically, the cover body is pivoted to the cooker body through a pivot shaft and can freely pivot between a cover position and an opening position relative to the cooker body around the pivot axis where the pivot shaft is positioned so as to conveniently cover and open the cooker body. When the cover body is covered on the cooker body, the cover body covers the cooker liner and forms a cooking space with the cooker liner. The lid also typically has a port seal, which may be made of, for example, a rubber material, disposed between the lid and the inner pot for sealing the cooking space when the lid is in the closed position.

For the cooking utensil of electric heat stove or electromagnetism stove class, pot courage and electric heat stove or electromagnetism stove are independent each other, and the pot courage can be arranged in the upper surface of electric heat stove or electromagnetism stove when using.

As shown in fig. 1 to 4, the present application provides a boiler liner 1 with better heat convection, wherein the boiler liner 1 mainly comprises an outer boiler base body 11, an inner boiler base body 12 and at least one local functional body 13. The inner pan body 12 is positioned inside the outer pan body 11 to form the pan body 2 with the receiving cavity 5. At least one local functional body 13 is connected between the outer pot base 11 and the inner pot base 12. It should be noted that "contacting" herein includes connection or abutment, for example, the local functional body 13 is connected to the outer pan base 11 and abuts against the inner pan base 12, alternatively, the local functional body 13 is connected to the inner pan base 12 and abuts against the outer pan base 11, alternatively, the local functional body 13 is sandwiched between the outer pan base 11 and the inner pan base 12, that is, abuts against both the outer pan base 11 and the inner pan base 12. The pot liner 1 of the scheme is provided with a plurality of structure layer pot bodies such as a three-structure layer pot body.

The outer pan base 11 covers at least the bottom of the inner pan base 12. The local functional body 13 is positioned at least at the bottom of the pan body 2. The illustrated example shows that the local functional body 13 is provided at the bottom and a part of the side of the pot body 2, and the outer pot base 11 covers the side and the bottom of the inner pot base 12, and further, the outer pot base 11 has substantially the same configuration as the inner pot base 12. Alternatively, the partial function 13 is provided at the bottom of the pot 2, and the outer pot base 11 covers the partial function 13 from the outside while covering the bottom of the inner pot base 12 without covering the side of the inner pot base 12. Alternatively, the partial function body 13 is provided at the bottom and a part of the side of the pot body 2, and the outer pot base 11 covers the partial function body 13 from the outside while covering the bottom and a part of the side of the inner pot base 12.

In order to enhance heat convection in the inner container 1 during cooking, as shown in fig. 3 and 4, adjacent two partial functional bodies 13 (see fig. 7 a) or adjacent portions of a single partial functional body 13 itself (see fig. 7 b) are arranged at intervals in at least one of the radial direction, the circumferential direction and the height direction of the inner container 2 to form a partial temperature difference region at the inner surface of the inner container 1. The pot body 2 comprises a pot body bottom 3 and a pot body side 4 which are connected. At least the bottom 3 of the pot body is configured in an arc or sphere shape, so that at least the bottom of the outer pot base 11 is configured in an arc or sphere shape, and the local functional body 13 is at least arranged at the bottom 3 of the pot body, in particular at the bottom of the outer pot base 11. Fig. 1 schematically shows an arc-shaped pot bottom 3 and a partly straight-walled pot side 4. One example, not shown, is that the pot bottom 3 and the pot side 4 form a spherical shape. Another example, not shown, is that the pot bottom 3 and the pot side 4 form straight walls.

When the local functional body 13 is arranged at the bottom of the pot body 2, the local functional body 13 is arranged at intervals in at least one of the radial direction and the circumferential direction of the pot body 2 for the straight-wall-shaped pot body bottom 3, and the local functional body 13 is arranged at intervals in the circumferential direction, or the radial direction and the height direction, or the radial direction, the circumferential direction and the height direction of the pot body 2 for the arc/spherical pot body bottom 3.

When the local functional bodies 13 are provided on the side portions of the pan body 2, the local functional bodies 13 are arranged at intervals in at least one of the circumferential direction and the height direction of the pan body 2 for the pan body side portion 4 in the shape of a straight wall, and the local functional bodies 13 are arranged at intervals in the circumferential direction, or the radial direction and the height direction, or the radial direction, the circumferential direction and the height direction of the pan body 2 for the pan body side portion 4 in the shape of an arc/sphere.

At least the inner pot base 12 is a heat conductor for transferring heat towards the inside of the pot liner 1. As shown in fig. 1 and 2, a cavity 14 is formed between the part of the outer pot base 11 which is not connected by the local functional body 13 and the inner pot base 12, and the cavity 14 is located at least at the interval of the local functional body 13. In other words, the local functional bodies 13 are separated by the cavities 14. Thus, the middle layer of the pot liner 1 comprises a local functional body 13 and a cavity 14. The heat of the outer pot base body 11 can be transferred to the inner pot base body 12 through the local functional body 13, but is blocked by the cavities 14 at the intervals of the local functional body 13, so that the heat transfer efficiency of different areas of the middle layer of the pot liner 1 is different, the heat transfer efficiency of the area where the local functional body 13 is positioned is higher than that of the area where the cavity 14 is positioned, and a local temperature difference area is formed on the inner surface of the pot liner 1.

So arranged, the inner surface of the pot 1 can have a first temperature zone corresponding to the local functional body 13 and a second temperature zone corresponding to the cavity 14 at the interval of the local functional body 13. When the pot liner 1 is heated, the temperature of the first temperature area of the pot liner 1 can be obviously higher than that of the second temperature area, further the first temperature area is a high temperature area, and the second temperature area is a low temperature area, so that a local temperature difference area is formed between the two areas, and obvious temperature gradient can be generated. The temperature gradient is utilized to promote the heat convection in the pot to be fast and severe, so that the boiling and rolling of the liquid and the food materials in the pot are more sufficient, the food materials are heated more uniformly, and the consistency of the cooking effect of the food is better. In addition, when the inner surface of the pot liner 1 has local temperature difference areas at a plurality of positions, the temperature difference is utilized, and the food materials such as rice grains contacted with the inner surface of the pot liner 1 can generate stress deformation and viscosity change due to expansion, so that the inner surface of the pot liner 1 has non-adhesive performance, and the non-coating non-adhesive performance is realized.

In addition, the local functional body 13 is arranged in the pot body 2, so that the substrate forming the inner surface and the substrate forming the outer surface of the pot body 2 are respectively integrated, and gaps are avoided from being generated at the inner surface or the outer surface of the pot body 2 due to the combination of the local functional body 13, thereby solving the problems that the gaps are easy to be enlarged, the edges of the gaps are raised, the coatings at the gaps are easy to fall off and the like in the use process. Therefore, the scheme provides the pot liner 1 with the surface having no gap and multiple local temperature difference areas, the pot liner 1 is provided with a multi-layer base structure, the local functional body 13 of the middle layer at least plays a role in heat transfer, and the cavity 14 of the middle layer plays a role in heat blocking, so that the generation of the local temperature difference areas is realized. In addition, the local functional body 13 is arranged in the pot body 2, so that the outer surface of the pot body 2 does not need to be provided with a graph corresponding to the local functional body 13, the positioning of the outer surface is not needed to be considered when the pot body 2 is manufactured, and the processing difficulty is reduced.

The outer pot base 11 may be a magnetic conductor or a heat conductor so that heat is generated by electromagnetic heating or heat from the heating means is absorbed to meet cooking needs. The inner pot base 12 may be a heat conductor such that heat of the local functional body 13 is conducted to the food.

The local functional body 13 is a heat conductor or a magnetizer. The local functional body 13 can transfer the heat of the outer pot base body 11 to the inner pot base body 12 through heat conduction when being a heat conductor, and the local functional body 13 can generate heat under the action of partial magnetic force lines in a magnetic field when being a magnetizer and simultaneously transfer the heat of the outer pot base body 11 to the inner pot base body 12.

As an example, the outer pot base 11 is a magnetic conductor, and the local functional body 13 is a heat conductor or a magnetic conductor. The outer pot base body 11 can generate heat through electromagnetic heating, and the local functional body 13 can conduct heat or generate heat, so that the electric heating cooker is suitable for electromagnetic heating cooking appliances. Another example is that the outer pot base 11 is a heat conductor and the local functional body 13 is a heat conductor. The outer pot base 11 can absorb heat from the heating device, and the local functional body 13 can conduct heat, so that the electric heating cooker is suitable for electric heating cooking appliances.

When the outer pan base 11 covers the side and bottom of the inner pan base 12, as shown in fig. 2, the cavity 14 includes a first cavity 15 for forming a partial temperature difference region and a second cavity 16 for side insulation, the first cavity 15 is formed at a space of the partial functional body 13, and the second cavity 16 is located at the side of the pan body 2. The pot liner 1 has the effect of non-uniform heating and boiling at the bottom or the bottom and part of the side parts due to the action of the first cavity 15, the pot liner 1 has the heat preservation effect at the side parts due to the action of the second cavity 16, the heat of the inner side of the pot liner 1 is prevented from radiating from the side parts, and the cooking temperature of food in the pot liner 1 is ensured. The pot liner 1 of the scheme is suitable for a cooking utensil without a side heating device.

The air volume within the cavity 14 should not be excessive in view of the pressure created by the thermal expansion of the air, which may lead to safety hazards, and the cavity 14 is typically filled with air at a pressure below atmospheric pressure. The pressure of the heated expansion of the air is not too high, so that the pressure generated by the heated expansion of the air can be prevented from extruding and deforming the cooker body 2, the dangers of cracking and explosion of the cooker body 2 are avoided, and the product safety of the cooker liner is improved. Optionally, the vacuum degree of the cavity 14 is 0.001-0.1 pa. The air quantity in the cavity 14 is moderate, so that the risks of deformation, explosion and the like of the pot body 2 after the air is heated and expanded can be avoided, the processing of the pot body 2 can be ensured not to be too difficult due to the requirement of the vacuum degree, and the production and the manufacture of the pot liner are facilitated. If the vacuum degree of the cavity 14 is more than 0.1pa, the air in the cavity 14 is excessive, and the air deforms the pot body 2 after being heated and expanded, so that the risks of explosion and the like occur. If the vacuum level of the cavity 14 is less than 0.001pa, the risk of air expansion is avoided, but such a high required vacuum level makes the processing of the pan body 2 too difficult.

In some embodiments, the outer pot base 11 is made of a metallic material that conducts heat well, or is made of a metallic material that conducts magnetic heat well. The inner pan body 12 is made of a metal material which conducts heat well. Alternatively, the outer pan base 11 and the inner pan base 12 are made of a non-metallic material. The inner pot base body 12 can be made of non-stick metal materials so that the inner surface of the pot liner 1 has a non-stick function, coating-free non-stick is realized, the outer pot base body 11 is used for generating heat or absorbing heat from a heating device through electromagnetic heating, and the pot liner 1 has better heat storage and insulation performance. Illustratively, the inner pan body 12 may be made of stainless steel, titanium, ceramic. The inner and/or outer surface of the pan body 2 may also be provided with a coating, such as a protective coating, if needed and/or desired.

The thickness of the local functional body 13 is typically 0.1mm to 5mm, and suitable values of 0.1mm, 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, etc., preferably 0.5mm. The thickness of the local functional body 13 is too small, so that the temperature difference of the inner surface of the pot liner 1 is too small, and strong convection cannot be formed. The local functional body 13 has an excessively thick thickness and an excessively long overall heat transfer path, which may make the thermal efficiency low.

When the local functional body 13 and the outer pot base body 11 are magnetic conductors, the magnetic conductors may be made of known materials such as magnetic stainless steel, magnetic conductors, and graphite. When the local functional body 13 is a heat conductor, the material of the heat conductor may be aluminum, copper, carbon, graphene, graphite, or other known high heat conductive material. When the outer pot base 11 is a heat conductor, the material of the outer pot base 11 may be steel, iron, ceramic, glass, or the like.

In order to form the desired temperature gradient, a distance s is provided between two adjacent partial functions 13 or between adjacent sections of a single partial function 13 itself (see fig. 7a and 7 b). The pitch refers to a pitch on a plane or an arc surface of the pot body 2, and for example, for a pot 1 having at least a bottom in a straight wall shape, the pitch refers to a pitch on a plane of the pot body 2, and for a pot 1 having at least a bottom in an arc/sphere shape, the pitch refers to a pitch on an arc surface of the pot body 2.

Fig. 5 shows that the outer pot base 11 is a heat conductor or a magnetizer, the inner pot base 12 is a heat conductor, and the local functional body 13 is a heat conductor or a magnetizer. When the pot liner 1 is heated, a high temperature point T1 is generated at the edge of the local functional body 13. When heat is conducted, a high temperature point T2 and a low temperature point T3 are generated on the inner surface of the pot liner 1, wherein the high temperature point T2 corresponds to the high temperature point T1 in the thickness direction, and the low temperature point T3 corresponds to the middle of the sectioned part of the cavity 14. The heat transfer distance between the high temperature point T1 and the high temperature point T2 is L1, and the heat transfer distance between the high temperature point T1 and the low temperature point T3 is L2. Thus, T1> T2> T3. After the temperature difference is generated on the inner surface of the inner pot, heat flows from a high temperature area to a low temperature area, so that food in the pot is promoted to tumble and convect, and the cooking is uniform.

The pitch s is the pitch between the local functional units 13. The test was performed with an example pan liner 1 of the present application to obtain a table of temperature differences versus spacing s, see table 1.

As can be seen from this, as the distance s increases, the temperature difference between the high temperature point T2 and the low temperature point T3 increases. The interval is too small, the temperature difference is too small, the rolling force of cooked rice is too small, the water deviation value of cooked rice is large, and the cooked rice is uneven. The interval is too large, the temperature difference is too large, the temperature in the low temperature area is too low, the problem that rice is easy to generate clamping in the low temperature area is solved, meanwhile, the area of the temperature difference area is reduced due to the increase of the interval, and the rolling is uneven. Therefore, the pitch s is set to a value of 5mm to 85mm, for example, 5mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 85mm, etc., preferably 10mm to 60mm.

As described above, at least the pot bottom 3 is constructed in an arc or spherical shape, and the partial function body 13 is provided at least at the pot bottom 3. The dimension of the first cavity 15 in the thickness direction of the pan body 2 is the same as the thickness of the local functional body 13, and as shown in fig. 2, the dimension N1 of the first cavity 15 in the thickness direction of the pan body 2 is 0.1 mm≤n1≤5mm, for example, N1 may be a suitable value such as 0.1mm, 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, etc., and preferably 0.5mm. As shown in FIG. 6, the dimension N2 of the second cavity 16 in the thickness direction of the pan body 2 is 0.1 mm≤N2≤10mm, and for example, N2 may be a suitable value of 0.1mm, 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, etc., preferably 0.5mm to 5mm, more preferably 3mm. The second cavity 16 has moderate gap, which can play a certain heat resistance effect, the temperature difference formed on the inner surface of the pot liner is in a desired range, strong convection can be formed, the second cavity has moderate gap, which can play a certain heat insulation effect, prevent side heat dissipation, and the pot body 2 has moderate thickness, which can avoid the increase of the whole size of the pot liner, has smaller material cost, avoids the excessive heavy pot liner, and is convenient for users to use. Too small gap, small thermal resistance, poor non-uniform heating and boiling effects, too large gap, increased material cost, too heavy pan body 2, and unfavorable use for users.

The second cavity 16 is located above the bottom rounded corner and below the rim of the pan. The side part of the pot body 2 is provided with a first height H1, the second cavity 16 is provided with a second height H2, wherein H2/H1 is more than or equal to 30%, for example, H2/H1 is 30%, 35%, 40%, 45%, 50% and other suitable values, H1 is 50 mm-100 mm, for example, H1 is 50mm, 60mm, 70mm, 80mm, 90mm, 100mm and other suitable values. The height of the second cavity 16 is moderate, so that the area occupied by the second cavity 16 on the side part of the pot body 2 can ensure that the side part of the pot body 2 has a better heat preservation effect, and in addition, the above range of H1 can avoid difficult processing of the top end closing position of the pot body 2.

The projection of the local functional body 13 on the horizontal plane has a first maximum diameter D1, and the pan body 2 has a second maximum diameter D2 on the pan body side 4, wherein D1/D2 is more than or equal to 40%. For example, D1/D2 is 40%, 50%, 60%, 70%, 80%, 90%, 95%, etc., preferably 88%. Therefore, the part of the side part of the pot body 2 from the bottom end to a certain height has the effect of non-uniform heating, and the food at the part of the side part can be fully rolled, so that the food materials can be uniformly heated. When the local functional body 13 is a magnetizer or a heat conductor, the D1/D2 is smaller than 40% so that the food materials at the side part of the inner pot are heated too little, the food at the side part is seriously clamped and does not meet the minimum clamping group standard of the food, and the D1/D2 is larger than or equal to 40%, so that the heating area is larger and can reach part of the side part, the food at the side part can be prevented from being clamped and the minimum clamping group standard of the food can be met, and the cooking effect is improved. The optimum state can be achieved when the D1/D2 is 88%.

The shape of the partial functional bodies 13 may be arranged as desired, an example being that the partial functional bodies 13 are arranged in a ring shape, in particular in a ring shape in the circumferential direction of the pot 2, and in concentric ring arrays in the radial direction of the pot 2 and/or in the height direction of the pot 1. Another example is that the partial function body 13 is arranged spirally, in particular gradually spirally outwards in radial direction and gradually spirally upwards in height direction from the bottom middle part of the pot body 2.

As shown in fig. 3 and 7a, the partial function 13 forms a plurality of first partial functions 17, and the plurality of first partial functions 17 are arranged in a circumferential array along the pot 2. The shape of the first partial function 17 may be circular, elliptical, or the like. Fig. 7a shows that the first partial function 17 has the shape of a fan blade and the like. Specifically, the width of each first partial function 17 in the circumferential direction gradually increases from the radially outward direction and/or the height direction of the pan body 2 upward to form a gradually widening pattern. Compared with other shapes such as a ring shape, a round shape, a polygonal shape and the like, the local functional body 13 with the gradually-widened pattern has the structural characteristics that the closer to the bottom center of the pot liner 1 is, the narrower the further away from the bottom center of the pot liner 1 is, so that the local functional body 13 can cover more area of the pot liner 1 at least at the bottom of the pot liner 1, the adjusting area of the local functional body 13 on the heat distribution of the pot liner 1 is larger, the larger the coverage area of a local temperature difference area is, and the effect of non-uniform heating and boiling in a large range can be realized. And when the local functional body 13 forms the inner surface or the outer surface of the pot body 2, the appearance of the product can be molded based on the gradually-widened graph, so that the appearance is simpler and more attractive as a whole, and the visual effect is better.

The at least one partial function 13 comprises a second partial function 18 which is circular. The second local functional body 18 is located at the bottom middle part of the pot body 2, and the narrow ends of the plurality of first local functional bodies 17 are connected to the second local functional body 18. The first partial functional bodies 17 can be positioned based on the second partial functional bodies 18, so that partial functional materials can be easily formed on the pot body 2, and the appearance of the product is simpler and more attractive as a whole, and the visual effect is better.

The area occupation ratio of the local functional body 13 is reasonably set, and the overall heating effect and the local convection effect are ensured when the overall heat of the pot liner 1 can meet the cooking requirement. Specifically, referring to fig. 8, the function setting area S1 is defined by a horizontal reference plane on which the highest point of the local function body 13 in the height direction is located, and the approximate position of the boundary P is schematically shown by a broken line in fig. 8, and an area below the boundary P is defined as a function setting area S1 and an area above the boundary P is defined as a non-function setting area S2. When the local functional body 13 is a heat conductor or a magnetizer, the area ratio of the local functional body 13 in the function setting area S1 may be 40% to 80%, for example, the area ratio may be 40%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, or other suitable ratio, and preferably 55%. The excessively large area ratio of the heat conductor or the magnetizer can lead to excessively small temperature difference in a clearance area, the convection effect is reduced, and the excessively small area ratio can lead to insufficient thermal efficiency.

Alternatively, for a cooking appliance such as an electric rice cooker, the function setting area S1 may be defined based on a projection area of the bottom heating device of the cooking appliance on the inner container 1, that is, the function setting area S1. The bottom heating rotating device can be a coil panel/heating panel, and the projection area takes the vertical projection of the outermost contour of the coil panel/heating panel on the outer surface of the pot liner 1 as the outermost boundary. The partial function 13 can be arranged in the projection area of the bottom heating device on the pot liner 1. The heating device further comprises a side heating device positioned at the side of the pot liner 1, and the local functional body 13 is arranged in the projection area of the side heating device on the pot liner 1.

In order to verify the temperature difference effect, the infrared temperature measurement test is performed on the inner liner 1 of the embodiment, and the temperature of the inner surface of the inner liner 1 in the area corresponding to the local functional body 13 is different from the temperature of the inner surface of the inner liner corresponding to the area of the outer liner body 11, in one liner example, the temperature at the high temperature point of the temperature area of four fan-shaped areas can reach more than 50 ℃, the temperature at other positions of the fan-shaped areas can reach more than 35 ℃, and the temperature at the areas other than the fan-shaped areas is lower, so that the inner surface of the inner liner 1 can form the temperature difference of more than 25 ℃ for example. Therefore, the heat of the pot liner 1 of the embodiment is more concentrated, the temperature difference is larger, and the heat convection is stronger.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the utility model. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

The present utility model has been described by way of the above embodiments, but it should be understood that the above embodiments are for illustrative and explanatory purposes only and that the utility model is not limited to the above embodiments, but is capable of numerous variations and modifications in accordance with the teachings of the utility model, all of which fall within the scope of the utility model as claimed.

Claims

1. A pot courage for cooking utensil, its characterized in that, the pot courage includes:

An outer pan base;

2. The pot liner according to claim 1, wherein the local functional body is a heat conductor or a magnetizer.

3. The pot liner according to claim 1, wherein,

The outer pot base body is a magnetizer, the local functional body is a heat conductor or a magnetizer, or

The outer pot base body is a heat conductor, and the local functional body is a heat conductor.

4. The pot liner according to claim 1, wherein the cavity is filled with air at a pressure lower than atmospheric pressure.

5. The bladder of claim 1, wherein the cavity has a vacuum level of 0.001 to 0.1pa.

6. The pot liner of claim 1, wherein the outer pot base covers sides and bottoms of the inner pot base, the cavity comprises a first cavity for forming a local temperature difference region and a second cavity for side insulation, the first cavity is formed at a space of the local functional body, and the second cavity is located at a side of the pot body.

7. The pot of claim 6, wherein the side of the pot has a first height H1, the second cavity has a second height H2,

Wherein H2/H1 is more than or equal to 30%, and/or H1 is 50 mm-100 mm.

8. The pot liner according to claim 6, wherein,

The dimension N1 of the first cavity in the thickness direction of the pot body is more than or equal to 0.1mm and less than or equal to N1 and less than or equal to 5mm, and/or

The dimension N2 of the second cavity in the thickness direction of the pot body is more than or equal to 0.1mm and less than or equal to 10mm.

9. The pot liner according to any one of claim 1 to 8, wherein,

The adjacent two local functional bodies or the adjacent part of the single local functional body is provided with a spacing s which is 5 mm-85 mm, and/or

The thickness of the local functional body is 0.1 mm-5 mm, and/or

The pot body is provided with a function setting area for arranging the local functional body, and the area occupation ratio of the local functional body in the function setting area is 40% -80%.

10. The boiler liner according to any of claims 1 to 8, wherein the at least one partial function comprises a plurality of first partial functions arranged in a circumferential array of the boiler body and each of the first partial functions gradually increasing in width in the circumferential direction from radially outward and/or height direction of the boiler body.

11. The pot of claim 10, wherein the at least one partial function comprises a second partial function in a ring shape or a circular shape, the second partial function being located at a bottom middle portion of the pot, and the narrow heads of the plurality of first partial functions being connected to the second partial function.

12. The pot according to any one of claims 1 to 8, wherein the pot comprises a pot bottom and a pot side connected, at least the pot bottom is configured in an arc or sphere shape, the local functional body is at least arranged at the pot bottom, the projection of the local functional body on a horizontal plane has a first maximum diameter D1, and the pot has a second maximum diameter D2 at the pot side, wherein D1/D2 is not less than 40%.

13. A cooking appliance, characterized in that it comprises heating means for heating the pot and a pot according to any one of claims 1 to 12.

14. Cooking appliance according to claim 13, characterized in that the heating means comprise bottom heating means at the bottom of the pot and/or side heating means at the sides of the pot, the local functionality of the pot being arranged in the projection area of the bottom heating means and/or side heating means on the pot.