A heated inner pot to prevent edge separation

Abstract

This utility model relates to the field of household appliances and provides a heat-receiving pot liner that prevents edge separation. The main body is integrally formed by a double-layer composite board, and the opening side of the main body forms an outwardly turned edge. The double-layer composite board includes an inner heating layer and an outer heating layer. The inner heating layer and the outer heating layer are bent and connected to form a cut side of the inner heating layer and a cut side of the outer heating layer on the edge. Advantages: (1) This utility model surrounds the cut side inside, which not only makes the pot liner more beautiful, but also prevents the problem of easy separation due to the exposed cut side. (2) This utility model avoids the formation of sanitary dead corners by the entry of pollutants through the opening gaps, thus improving the hygiene of the pot liner; it also avoids liquid from entering between the inner and outer layers through the opening, which would cause long-term corrosion to the pot liner and improve its durability.

Description

Technical Field

[0001] This utility model relates to the field of household appliances, and more specifically, to a heated pot liner that prevents edge separation. Background Technology

[0002] Rice cookers are common kitchen appliances, characterized by their ease of use and time-saving convenience, making them a primary tool for cooking rice in modern households. The inner pot of the rice cooker is the core component that directly contacts the food and determines the cooking effect. Common materials for the inner pot include aluminum alloy, stainless steel, and ceramic. The design of the inner pot also affects performance; for example, honeycomb or spherical textures can enhance heat convection, allowing the rice to be heated more evenly.

[0003] To ensure more even heat distribution and achieve "three-dimensional heating," preventing undercooked or burnt rice, existing inner pots use a double-layer composite structure. The outer layer is mostly made of metals with good thermal conductivity, such as aluminum alloy, while the inner layer is made of materials such as stainless steel or ceramic. This design can enhance heat retention, reduce heat loss, and allow the inner pot to be heated evenly, resulting in rice with a more consistent taste.

[0004] During the manufacturing process, the inner liner undergoes stamping and then edge rolling and cutting. Cutting slits are formed along the rolled edges. Currently, these slits are exposed, which is not only unsightly but also poses a risk of separation between the inner and outer layers. Once these openings separate, dirt and grime can easily accumulate, creating unsanitary corners that breed bacteria and mold, leading to hygiene problems. Furthermore, water vapor and other liquids can easily seep in through these small gaps, creating a damp environment that accelerates metal corrosion and aging, resulting in poor durability of the inner liner. If corrosion reaches the inner liner layer over time, causing the inner coating to crack or even peel off, it can mix with food, posing a safety risk. Utility Model Content

[0005] The present invention aims to overcome at least one defect (deficiency) of the prior art and provide a heated pot liner that prevents edge separation, thereby avoiding affecting the hygiene and durability of the pot liner.

[0006] The technical solution adopted by this utility model is to provide a heated pot liner that prevents edge separation, comprising: a main body integrally formed by a double-layer composite plate, wherein the opening side of the main body forms an outwardly turned edge, and the double-layer composite plate comprises: an inner heating layer and an outer heating layer, wherein the inner heating layer and the outer heating layer are bent and connected to form a wrapping of the cut side of the inner heating layer and the cut side of the outer heating layer on the edge.

[0007] In this technical solution, the outward-curving edge facilitates the user's handling of the inner pot; the inner heating layer is the layer that directly contacts the food inside the inner pot. In this solution, the inner heating layer and the outer heating layer can be bent in different ways, as long as they can wrap around the cut side. For example, the inner and outer edges of the inner pot can be rolled inwards to the same side, enclosing the cut side; or the inner and outer edges of the inner pot can be rolled inwards in two different directions, enclosing the cut side, etc.

[0008] This design encloses the cut side, making the pot interior more aesthetically pleasing and preventing easy separation issues that could occur with exposed cut sides. This also prevents contaminants from entering through the openings and creating unsanitary areas, improving the pot interior's hygiene; it also prevents liquids from entering between the inner and outer layers and causing long-term corrosion, thus improving the pot interior's durability. Furthermore, this design eliminates the need for an external structure to wrap the cut side, simplifying the process. The integrated bending of the inner and outer layers of the pot interior around the cut side results in a more aesthetically pleasing overall design and an improved user experience.

[0009] Furthermore, the inner heating layer extends to the outer heating layer to form an extension segment. The extension segment is bent and connected to the outer heating layer to form a wrapping on the cut side of the outer heating layer and to form a first wrapping segment with three interconnected layers.

[0010] In this technical solution, the outer extension segment is bent inward and connected to the bottom surface of the outer heating layer. Various connection methods can be used to avoid gaps between the outer extension segment and the outer heating layer, which could create cleaning dead zones and further improve the hygiene and safety of the inner pot. Preferably, the outer extension segment is at least partially bonded to the outer heating layer, reducing the thickness at the edge of the inner pot, improving the overall texture, and avoiding design difficulties for closing the rice cooker lid. Furthermore, this solution also effectively encloses the outer heating layer.

[0011] In this solution, the cut side of the inner heating layer can be wrapped in different ways. For example, the cut side is rolled inward at the edge to form a wrap.

[0012] Furthermore, the first wrapping segment is bent and connected to the outer heating layer to form a wrapping on the cut side of the inner heating layer and to form a second wrapping segment with five interconnected layers.

[0013] In this technical solution, the first wrapping segment is preferably bonded and connected to the outer heating layer after bending. The second wrapping segment can be understood as a five-layer structure including the first wrapping segment. Bending achieves the outer heating layer wrapping the cut side of the inner heating layer, while the inner heating layer wraps the cut side of the outer heating layer, effectively preventing cracking at the cut side through mutual wrapping. Furthermore, the bending in this solution extends integrally from both the inner and outer sides of the pot liner, resulting in a simple structure with good integrity, and avoiding the increased process difficulty caused by setting up a separate wrapping structure for connection and wrapping.

[0014] Furthermore, the thickness of the inner heating layer is less than that of the outer heating layer.

[0015] This technical solution reduces thickness and processing difficulty. The outer heating layer is used to quickly absorb and store heat from the heating plate inside the rice cooker. The thicker outer heating layer increases the energy stored, especially during the rice cooking stage, allowing for continuous heat release and improved rice texture. The thinner inner heating layer, compared to the outer layer, allows for faster heat transfer, increasing heat uniformity and preventing localized overheating that could lead to burnt food or poor taste. Furthermore, the thicker outer layer and thinner inner layer design ensures sufficient rigidity of the inner pot, reducing the risk of deformation during cooking, while the reduced inner thickness ensures a lighter weight, balancing stability and lightweight construction.

[0016] Furthermore, the main body includes: a vertical sidewall and a chassis, with an arc-shaped transition section between the vertical sidewall and the edge.

[0017] In this technical solution, the chassis is preferably an arc-shaped chassis. When the liquid inside the pot boils and rises, the arc-shaped transition section acts as a smooth guide zone. When the liquid rushes to the edge of the pot, the arc design effectively guides the liquid back into the pot, reducing cleaning workload. Furthermore, compared to a right-angle design, the arc design avoids the problem of creating cleaning dead zones at corners, improving cleaning convenience and further maintaining the hygiene of the pot.

[0018] Furthermore, the width of the transition section is 1.2 to 1.6 times the thickness of the composite plate.

[0019] In this technical solution, if the transition section is too wide, it will occupy the capacity inside the pot, reducing the volume of the pot. Conversely, if the width is too small, the transition section will be close to a right angle, failing to demonstrate the advantages of the curved transition section, such as weakening the anti-overflow effect. Therefore, setting a suitable ratio between the width and thickness of the transition section is beneficial in ensuring the advantages of the curved transition section while maintaining the capacity and volume of the pot.

[0020] Furthermore, the edge includes: a horizontally outwardly extending epitaxial composite segment, a bent composite segment, a horizontally extending inner epitaxial composite segment, a bent inner layer segment, and a horizontally extending outer inner layer segment connected in sequence.

[0021] In this technical solution, all extension sections are horizontally arranged, and the extension sections are connected by bending sections to achieve a simple structural closure of the cut side, reducing processing difficulty and improving production efficiency. Preferably, the outer composite section is bonded to the upper side of the outer inner layer section, and the outer inner layer section is bonded to the inner composite section. This avoids gaps that could trap dirt and grime, maintaining hygiene at the edge of the pot.

[0022] Furthermore, the epitaxial composite segment is disposed below the epitaxial composite segment; the epitaxial inner layer segment is disposed between the epitaxial composite segment and the epitaxial composite segment.

[0023] In this technical solution, the inner extension composite section is located below the outer extension composite section, and all bends are downward, so that the entire wrapping structure is still horizontal on the lower side of the outer edge of the inner pot, that is, on the upper side of the outer edge. This arrangement makes it easy to form a seal when the lid of the rice cooker closes the inner pot, and the lid does not need to make corresponding sealing settings to take into account the protrusion of the inner pot edge, thus reducing the difficulty of rice cooker manufacturing.

[0024] Furthermore, the length of the epitaxial composite segment is 1.7 to 2.2 times that of the epitaxial composite segment.

[0025] In this technical solution, the longer the inner epitaxial composite section is, the longer the inner heating layer needs to be extended. Therefore, setting the inner epitaxial composite section to be shorter than the outer epitaxial composite section can reduce the extension length of the inner heating layer accordingly, thus saving materials.

[0026] Furthermore, a gap is left between the epitaxial composite segment and the main body, the gap being 0.6 to 1.2 times the length of the epitaxial composite segment.

[0027] In this technical solution, the spacing provides users with a gripping space when handling the inner pot, especially when it contains a lot of food. This gripping space effectively prevents the inner pot from slipping out of their hands. The simple structural design improves the practicality of the inner pot and optimizes the user experience. Furthermore, the spacing also provides processing space for bending the edges, facilitating production and improving the production efficiency of the inner pot.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] (1) This utility model surrounds the cut side inside, which not only makes the pot inner pot more beautiful, but also prevents the problem of easy separation due to the exposed cut side.

[0030] (2) This utility model avoids pollutants from entering through the opening gaps and forming a sanitary dead corner, thus improving the hygiene of the pot; it also avoids liquid from entering between the inner and outer layers through the opening and causing long-term corrosion to the pot, thus improving the durability of the pot.

[0031] (3) In this utility model, there is no need to connect to the cut side with an external structure to wrap it, which simplifies the process steps. The inner and outer layers of the pot are bent and wrapped around the cut side in one piece, making the pot more beautiful and optimizing the user experience. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the heated pot inner tank of this utility model.

[0033] Figure 2 This is a structural diagram of the vertical sidewall of this utility model.

[0034] Figure 3 This is a structural diagram of the chassis of this utility model.

[0035] Figure 4 This is a cross-sectional view of the heated pot liner of this utility model.

[0036] Figure 5 This is a schematic diagram of the structure of the outer extension of the inner heating layer of this utility model before bending.

[0037] Figure 6 This is a schematic diagram of the structure of the first wrapping segment of this utility model.

[0038] Figure 7 This is a schematic diagram of the structure of the second wrapping segment of this utility model.

[0039] Figure 8 This is a schematic diagram of the structure of the epitaxial composite segment, the bending composite segment, the inner epitaxial composite segment, the bending inner layer segment, and the epitaxial inner layer segment of this utility model.

[0040] Reference numerals: Inner heating layer 100, outer extension section 110, outer heating layer 200, first wrapping section 300, second wrapping section 400, vertical sidewall 500, chassis 510, transition section 520, outer extension composite section 600, bending composite section 610, inner extension composite section 620, bending inner layer section 630, outer extension inner layer section 640, edge 700. Detailed Implementation

[0041] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0042] Example 1

[0043] refer to Figure 1 and Figure 5 This embodiment provides a heat-receiving pot liner to prevent edge 700 separation, comprising: a main body integrally formed by a double-layer composite plate, wherein the opening side of the main body forms an outwardly turned edge 700, and the double-layer composite plate comprises: an inner heating layer 100 and an outer heating layer 200, wherein the inner heating layer 100 and the outer heating layer 200 are bent and connected to form a wrapping of the cut side of the inner heating layer 100 and the cut side of the outer heating layer 200 on the edge 700.

[0044] In this embodiment, the outwardly flared edge 700 facilitates the user's handling of the inner pot; the inner heating layer 100 is the layer that directly contacts the food inside the inner pot. In this solution, the inner heating layer 100 and the outer heating layer 200 can be bent in different ways, as long as the cut side can be wrapped. For example, the inner and outer edges 700 of the inner pot can be rolled inward to the same side to surround the cut side; or the inner and outer edges 700 of the inner pot can be rolled inward in two different directions to surround the cut side, etc.

[0045] Enclosing the cut side not only makes the pot's overall appearance more aesthetically pleasing but also prevents the pot from easily separating due to the exposed cut side. This prevents contaminants from entering through the opening and creating unsanitary corners, improving the pot's hygiene. It also prevents liquids from entering between the inner and outer layers through the opening, which could cause long-term corrosion and improve the pot's durability. Furthermore, this design eliminates the need for an external structure to connect to and wrap the cut side, simplifying the process. The integrated bending of the inner and outer layers of the pot to wrap the cut side results in a more aesthetically pleasing overall appearance and an improved user experience.

[0046] refer to Figure 5 As a preferred embodiment, the thickness of the inner heating layer 100 is less than that of the outer heating layer 200.

[0047] In this technical solution, thickness and processing difficulty are reduced. The outer heating layer 200 is used to quickly absorb and store heat from the heating plate inside the rice cooker. The thicker design of this layer increases the energy stored in the outer heating layer 200, especially during the rice cooking stage, it can continuously release heat inward, improving the taste of the rice. The inner heating layer 100, being thinner than the outer layer, allows it to respond more quickly to the heat from the outer layer, transferring heat promptly and increasing the uniformity of heat transfer, avoiding localized overheating that could lead to burnt food or poor taste. Furthermore, the outer-thickness and inner-thinness design ensures sufficient rigidity of the inner pot, reducing the risk of deformation during cooking, while the reduced inner thickness also ensures a lighter weight for the inner pot, balancing stability and lightweight design.

[0048] refer to Figures 2 to 5As a preferred embodiment, the main body includes: a vertical sidewall 500 and a chassis 510, wherein an arc-shaped transition section 520 is provided between the vertical sidewall 500 and the edge 700.

[0049] In this technical solution, the chassis 510 is preferably an arc-shaped chassis 510. When the liquid in the pot boils and rises, the arc-shaped transition section 520 can act as a smooth guide zone. When the liquid rushes to the edge of the pot, the arc-shaped design can effectively guide the liquid back into the pot, reducing the amount of cleaning work. Moreover, compared with a right-angle design, the arc-shaped design also avoids the problem of forming cleaning dead corners at the corners, improving the convenience of cleaning and further maintaining the hygiene of the pot.

[0050] refer to Figure 5 Furthermore, the width of the transition section 520 is 1.2 to 1.6 times the thickness of the composite plate.

[0051] In this technical solution, for example, the width of the transition section 520 is 1.3 times, 1.4 times, or 1.5 times the thickness of the composite plate. If the transition section 520 is too wide, it will occupy the capacity inside the pot, reducing the volume of the pot. If the width is too small, the transition section 520 will be close to a right angle, failing to demonstrate the advantages of the curved transition section 520, for example, weakening the anti-overflow effect. Therefore, setting a suitable ratio between the width and thickness of the transition section 520 helps to ensure the advantages of the curved transition section 520 while ensuring that the volume of the pot is not affected.

[0052] refer to Figure 5 and Figure 6 As a preferred embodiment, the inner heating layer 100 extends to the outer heating layer 200 to form an extension segment 110. The extension segment 110 is bent and connected to the outer heating layer 200 to form a wrapping on the cut side of the outer heating layer 200 and to form a first wrapping segment 300 with three interconnected layers.

[0053] In this technical solution, the outer extension 110 is bent inward and connected to the bottom surface of the outer heating layer 200. Various connection methods can be used to avoid gaps between the outer extension 110 and the outer heating layer 200, which could create cleaning dead zones and further improve the hygiene and safety of the inner pot. Preferably, the outer extension 110 is bent and at least partially bonded to the outer heating layer 200, reducing the thickness at the edge 700 of the inner pot, improving the overall texture, and avoiding design difficulties for closing the rice cooker lid. Furthermore, this solution also effectively encloses the outer heating layer 200. In this solution, the cut side of the inner heating layer 100 can be wrapped in different ways; for example, its cut side is rolled inward at the edge.

[0054] refer to Figure 7As a preferred embodiment, the first wrapping segment 300 is bent and connected to the outer heating layer 200 to form a wrapping on the cut side of the inner heating layer 100 and to form a second wrapping segment 400 with five interconnected layers.

[0055] In this technical solution, the first wrapping segment 300 is preferably bent and bonded to the outer heating layer 200. The second wrapping segment 400 can be understood as a five-layer structure including the first wrapping segment 300. Bending achieves good wrapping by the outer heating layer 200 wrapping the cut side of the inner heating layer 100, and the inner heating layer 100 wrapping the cut side of the outer heating layer 200, effectively preventing cracking at the cut side. Furthermore, the bending in this solution extends integrally from both the inner and outer sides of the pot, resulting in a simple structure with good integrity, and avoiding the increased process difficulty caused by setting up a separate wrapping structure for connection and wrapping.

[0056] refer to Figure 8 As a preferred embodiment, the edge 700 includes: a horizontally extending outwardly connected outer composite segment 600, a bent composite segment 610, a horizontally extending inner composite segment 620, a bent inner layer segment 630, and a horizontally extending outer inner layer segment 640.

[0057] In this technical solution, all extension sections are horizontally arranged, and the extension sections are connected by bending sections to achieve a simple structural closure of the cut side, reducing processing difficulty and improving production efficiency. Preferably, the outer extended composite section 600 is bonded to the upper side of the outer extended inner layer section 640, and the outer extended inner layer section 640 is bonded to the inner extended composite section 620. This avoids gaps that could trap dirt and grime, maintaining hygiene at the edge 700 of the pot.

[0058] refer to Figure 8 Furthermore, the inner epitaxial composite segment 620 is disposed below the outer epitaxial composite segment 600; the outer epitaxial inner layer segment 640 is disposed between the inner epitaxial composite segment 620 and the outer epitaxial composite segment 600.

[0059] In this technical solution, the inner extension composite section 620 is located below the outer extension composite section 600, and all bends are downward, so that the entire wrapping structure is still horizontal on the lower side of the outer edge 700 of the inner pot, that is, the upper side of the outer edge 700. This arrangement makes it easy to form a seal when the lid of the rice cooker closes the inner pot, and the lid does not need to make corresponding sealing settings to take into account the protrusion of the inner pot edge 700, thus reducing the difficulty of rice cooker manufacturing.

[0060] refer to Figure 8 Furthermore, the length of the epitaxial composite segment 600 is 1.7 to 2.2 times that of the epitaxial composite segment 620.

[0061] In this technical solution, for example, the length of the epitaxial composite segment 600 is 1.8 times, 1.9 times, or 2.1 times that of the epitaxial composite segment 620. The longer the epitaxial composite segment 620, the longer the inner heating layer 100 needs to extend. Therefore, setting the inner epitaxial composite segment 620 shorter than the epitaxial composite segment 600 can correspondingly reduce the extension length of the inner heating layer 100 and save materials.

[0062] refer to Figure 8 Furthermore, a gap is left between the epitaxial composite segment 620 and the main body, the gap being 0.6 to 1.2 times the length of the epitaxial composite segment 620.

[0063] In this technical solution, for example, the length of the interval is 0.7 times, 0.8 times, or 0.9 times the length of the inner extension composite segment 620. The interval provides a convenient gripping space for the user when handling the inner pot, especially when the pot contains a large amount of food. This gripping space effectively prevents the pot from slipping out of the hand, improving the practicality of the inner pot through a simple structural design and optimizing the user experience. Furthermore, the interval also provides processing space for the bending of the edge 700, facilitating production and improving the production efficiency of the inner pot.

[0064] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A heat resistant pot liner that prevents rim separation, comprising: The main body is integrally formed by a double-layer composite board, wherein the opening side of the main body forms an outwardly turned edge. The double-layer composite board comprises an inner heating layer and an outer heating layer, wherein the inner heating layer and the outer heating layer are bent and connected to form a wrapping of the cut side of the inner heating layer and the cut side of the outer heating layer on the edge.

2. The heat-resistant can according to claim 1, wherein The inner heating layer extends to the outer heating layer to form an extension segment. The extension segment is bent and connected to the outer heating layer to form a wrapping of the cut side of the outer heating layer and to form a first wrapping segment with three interconnected layers.

3. A heated pot liner for preventing edge separation according to claim 2, characterized in that, The first wrapping segment is bent and connected to the outer heating layer to form a wrapping on the cut side of the inner heating layer and to form a second wrapping segment with five interconnected layers.

4. A heated pot liner for preventing edge separation according to claim 1, characterized in that, The thickness of the inner heating layer is less than that of the outer heating layer.

5. A heated pot liner for preventing edge separation according to claim 1, characterized in that, The main body includes: The vertical sidewalls and the chassis are provided with an arc-shaped transition section between the vertical sidewalls and the edges.

6. A heated pot liner for preventing edge separation according to claim 5, characterized in that, The width of the transition section is 1.2 to 1.6 times the thickness of the composite plate.

7. A heated pot liner for preventing edge separation according to any one of claims 1-6, characterized in that, The edge includes: a horizontally extending outwardly connected outer composite segment, a bent composite segment, a horizontally extending inner composite segment, a bent inner layer segment, and a horizontally extending outer inner layer segment.

8. A heated pot liner for preventing edge separation according to claim 7, characterized in that, The inner epitaxial composite segment is disposed below the outer epitaxial composite segment; the outer epitaxial inner layer segment is disposed between the inner epitaxial composite segment and the outer epitaxial composite segment.

9. A heated pot liner for preventing edge separation according to claim 7, characterized in that, The length of the epitaxial composite segment is 1.7 to 2.2 times that of the epitaxial composite segment.

10. A heated pot liner for preventing edge separation according to claim 7, characterized in that, The epitaxial composite segment is spaced from the main body, and the space is 0.6 to 1.2 times the length of the epitaxial composite segment.

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