Aluminum base material IH applicable electric appliance inner pot and cooking utensil
By designing a magnetic conductive layer and a non-stick coating on the aluminum-based inner pot, the problem of uneven heating in traditional inner pots is solved, achieving a more efficient and uniform heating effect and a longer service life, thus improving the practicality of cooking utensils.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional inner pots suffer from uneven heating, low thermal efficiency, and poor durability during the heating process, especially in electromagnetic induction heating technology, which affects cooking efficiency and food taste.
The pot body is made of aluminum substrate, and a magnetic layer is formed on the bottom and outer surface of the pot wall. The magnetic layer has a convex structure. Iron powder is prepared by cold spraying process, combined with non-stick coating and protective layer to optimize heat conduction and wear resistance.
It achieves more uniform heating, improves thermal efficiency, shortens cooking time, enhances durability and cleanability, and improves cooking quality.
Smart Images
Figure CN224023379U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of cooking appliances, and in particular to an aluminum-based IH-compatible inner pot for electric appliances and a cooking appliance. Background Technology
[0002] In the current home appliance market, cooking appliances such as rice cookers and electric pressure cookers commonly use traditional inner pot designs. While these designs offer advantages in terms of materials and durability, they suffer from significant shortcomings in heating efficiency and convection. During the heating process, heat from traditional inner pots tends to concentrate at the bottom, resulting in uneven heating and unsatisfactory cooking outcomes. Furthermore, due to the limited thermal conductivity of the pot walls, heat cannot be quickly transferred to all parts of the pot, leading to uneven heating of the food and affecting its taste and nutritional value.
[0003] The poor convection effect of traditional inner pots is particularly pronounced when using induction heating (IH) technology. IH technology relies on the magnetic properties of the inner pot to generate heat, but the heat-conducting layer of traditional inner pots often fails to form evenly across the entire pot wall, resulting in uneven heat distribution and further exacerbating the poor convection effect. This not only affects cooking efficiency but also limits the application potential of IH technology in cooking appliances. Therefore, there is an urgent need for a novel inner pot design to improve heating convection and achieve a more uniform and efficient cooking process. Summary of the Invention
[0004] In view of the shortcomings of the prior art, this utility model provides an aluminum-based IH electric inner pot to solve the technical problems of uneven heating, low thermal efficiency, poor durability and heavy weight that exist in traditional IH inner pots during use.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] An aluminum-based IH-compatible inner pot for electric appliances, the inner pot comprising:
[0007] A pot body, comprising a pot bottom and pot walls, wherein the pot body is made of aluminum material;
[0008] A magnetically conductive layer is formed at least on the outer surfaces of the bottom and walls of the pot.
[0009] The outer surface of the magnetic conductive layer has a protruding structure.
[0010] As a preferred technical solution, the pot body has a uniform thickness at the bottom and the pot wall, and the transition between the bottom and the pot wall is smooth, so as to optimize the heat conduction efficiency.
[0011] As a preferred technical solution, the protrusion structure of the magnetic conductive layer includes a plurality of tiny protrusions, the height of which is 0.1 mm to 1.0 mm, and the spacing between adjacent protrusions is 0.5 mm to 2.0 mm.
[0012] As a preferred technical solution, the magnetic conductive layer is formed by cold spraying iron powder with a particle size of 15um to 45um, and the thickness of the magnetic conductive layer is 0.15mm to 0.25mm.
[0013] As a preferred technical solution, the inner surface of the pot body is coated with a non-stick coating, the thickness of which is 20um to 35um.
[0014] As a preferred technical solution, the outer surface of the pot body is further coated with an aluminum protective layer above the magnetic conductive layer, and the thickness of the aluminum protective layer is 0.05mm to 0.1mm.
[0015] As a preferred technical solution, the outer surface of the pot body is further coated with a ceramic protective layer or a non-stick coating layer above the aluminum protective layer, and the thickness of the ceramic protective layer or the non-stick coating layer is 20um to 35um.
[0016] As a preferred technical solution, the height of the magnetic conductive layer on the pot wall is 1 / 4 to 3 / 4 of the height of the pot wall, and the thickness of the magnetic conductive layer is consistent on the bottom and the wall of the pot.
[0017] As a preferred technical solution, the pot wall gradually extends upward from the bottom edge of the pot and forms an arc shape.
[0018] Another aspect of this utility model is to provide a cooking appliance, which includes an aluminum-based IH-compatible inner pot as described above; the cooking appliance is a rice cooker or an electric pressure cooker.
[0019] The beneficial effects of this utility model are:
[0020] This utility model's aluminum-based IH-compatible inner pot not only provides a novel heating method but also achieves more uniform heating and better thermal efficiency by forming a magnetic layer on the bottom and outer surface of the pot body. Using aluminum as the pot body, the inner pot is lightweight, making it easy for users to handle and clean. Simultaneously, aluminum's excellent thermal conductivity ensures that heat is quickly and evenly transferred to the pot, thereby shortening cooking time and improving energy efficiency. The convex structure design of the magnetic layer not only enhances the effect of electromagnetic induction heating but also creates multiple small thermal convection effects, causing the food inside the pot to tumble, resulting in more even heating and improved cooking quality. Furthermore, the magnetic layer formed by the cold spraying process of this utility model's inner pot has good wear resistance and corrosion resistance, extending the service life of the inner pot. At the same time, the non-stick coating on the inner side and the protective layer on the outer side not only provide an easy-to-clean surface but also enhance the durability of the inner pot.
[0021] This invention also provides a cooking appliance suitable for rice cookers or electric pressure cookers, which can fully utilize the advantages of electromagnetic induction heating technology to provide users with a more convenient, efficient and healthy cooking experience.
[0022] In summary, the aluminum-based IH-compatible inner pot of this utility model is not only innovative in its structural design, but also has significant advantages in terms of functionality and practicality, and can meet the needs of modern families for efficient and healthy cooking. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of the aluminum-based IH-type electric appliance inner pot of this utility model.
[0024] Figure 2 This is a partially enlarged schematic diagram of the convex structure of the magnetic conductive layer of the inner pot of an electric appliance with aluminum substrate IH.
[0025] Figure 3 This is a cross-sectional structural schematic diagram of a preferred embodiment of the aluminum substrate IH-type electric appliance inner pot of this utility model.
[0026] Figure 4 This is a schematic diagram of the arc-shaped structure of the inner pot wall of an appliance with an aluminum substrate IH, which is another alternative to the present invention. Detailed Implementation
[0027] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.
[0028] Example
[0029] like Figure 1 and Figure 2 As shown in the figure, the aluminum-based IH-compatible inner pot of this embodiment includes a pot body 1 and a magnetic layer 2. The pot body 1 is made of aluminum and includes a bottom and a wall. The magnetic layer 2 is formed at least on the bottom of the pot body 1 and the outer surface of the pot wall, and the outer surface of the magnetic layer 2 has a raised texture.
[0030] In a preferred embodiment, the pot body 1 has a uniform thickness at the bottom and on the walls, with a smooth transition between them to optimize heat transfer efficiency. The protrusion structure of the magnetic layer 2 includes multiple tiny protrusions, each with a height of 0.1 mm to 1.0 mm and a spacing of 0.5 mm to 2.0 mm between adjacent protrusions. The magnetic layer 2 is formed from iron powder with a particle size of 15 μm to 45 μm using a cold spraying process, and has a thickness of 0.15 mm to 0.25 mm.
[0031] In a preferred embodiment, the height H of the magnetic conductive layer 2 on the pot wall is 1 / 4 to 3 / 4 of the height of the pot wall, and the thickness of the magnetic conductive layer 2 is consistent on the bottom and the wall of the pot.
[0032] In a preferred embodiment, such as Figure 3 As shown, the inner surface of the pot body 1 is coated with a non-stick coating with a thickness of 20µm to 35µm. This non-stick coating can be any non-stick material known to those skilled in the art suitable for cooking utensils. Above the magnetic conductive layer 2, the outer surface of the pot body 1 is also coated with an aluminum protective layer with a thickness of 0.05mm to 0.1mm. Further, above the aluminum protective layer on the outer surface, a ceramic protective layer (or a ceramic coating easy-to-clean protective layer) or a non-stick coating layer (or a high-temperature resistant non-stick coating) with a thickness of 20µm to 35µm is also coated. The high-temperature resistant non-stick coating or the ceramic coating easy-to-clean protective layer of this invention are conventional technical means known to those skilled in the art and will not be described in detail here.
[0033] In a preferred embodiment, such as Figure 4 As shown, the pot wall gradually extends upwards from the bottom edge and forms an arc to enhance the heat convection effect on the food inside the pot.
[0034] When the inner pot of this invention needs to be used in cooking appliances, such as rice cookers or electric pressure cookers, the inner pot can be placed directly on the heating base of the cooking appliance. When the cooking appliance starts the heating program, the magnetic layer on the bottom of the inner pot and the outer surface of the pot wall reacts with the electromagnetic induction coil to form heat convection, making the food in the pot heated more evenly.
[0035] This utility model's aluminum-based IH-compatible electric cooker achieves more uniform heating and better thermal efficiency through the aforementioned structural design. Simultaneously, the non-stick coating on the inner side and the protective layer on the outer side provide an easy-to-clean surface, enhancing the cooker's durability.
[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. An aluminum-based IH-compatible inner pot for electric appliances, characterized in that, The inner pot includes: The pot body, comprising a bottom and walls, is made of aluminum. A magnetically conductive layer is formed at least on the outer surfaces of the bottom and walls of the pot. The outer surface of the magnetic conductive layer has a protruding structure.
2. The aluminum-based IH-type electric cooker inner pot as described in claim 1, characterized in that, The pot body has a uniform thickness at the bottom and on the walls, and the transition between the bottom and the walls is smooth to optimize heat transfer efficiency.
3. The aluminum substrate IH-compatible inner pot for electric appliances as described in claim 1, characterized in that, The protrusion structure of the magnetic conductive layer includes a plurality of tiny protrusions, the height of which is 0.1 mm to 1.0 mm and the spacing between adjacent protrusions is 0.5 mm to 2.0 mm.
4. The aluminum substrate IH-compatible inner pot for electric appliances as described in claim 1, characterized in that, The magnetic conductive layer is formed by cold spraying iron powder with a particle size of 15um to 45um, and the thickness of the magnetic conductive layer is 0.15mm to 0.25mm.
5. The aluminum-based IH-type electric cooker inner pot as described in claim 1, characterized in that, The inner surface of the pot is coated with a non-stick coating, the thickness of which is 20µm to 35µm.
6. The aluminum-based IH-type electric cooker inner pot as described in claim 1, characterized in that, The outer surface of the pot body is also coated with an aluminum protective layer above the magnetic conductive layer, and the thickness of the aluminum protective layer is 0.05mm to 0.1mm.
7. The aluminum-based IH-type electric cooker inner pot as described in claim 1, characterized in that, The outer surface of the pot body is coated with a ceramic protective layer or a non-stick coating layer above the aluminum protective layer, and the thickness of the ceramic protective layer or non-stick coating layer is 20um to 35um.
8. The aluminum substrate IH-compatible inner pot for electric appliances as described in claim 1, characterized in that, The height of the magnetic conductive layer on the pot wall is 1 / 4 to 3 / 4 of the pot wall height, and the thickness of the magnetic conductive layer is consistent on the bottom and the pot wall.
9. The aluminum-based IH-type electric cooker inner pot as described in claim 1, characterized in that, The pot wall gradually extends upwards from the bottom edge of the pot, forming an arc shape.
10. A cooking utensil, characterized in that, The cooking appliance includes an aluminum-based IH-compatible inner pot as described in any one of claims 1-9; the cooking appliance is a rice cooker or an electric pressure cooker.