A high thermal conductivity three-layer metal pot

Abstract

This utility model relates to the field of cookware technology and discloses a high thermal conductivity three-layer metal cookware, including an outer carbon steel plate, an inner food-grade stainless steel plate, and a high thermal conductivity aluminum alloy plate intermediate layer. The high thermal conductivity aluminum alloy plate intermediate layer is located within the cavity of the outer carbon steel plate, and the upper opening edge of the high thermal conductivity aluminum alloy plate intermediate layer is at the same height as the upper opening edge of the outer carbon steel plate. This high thermal conductivity three-layer metal cookware, by combining the outer carbon steel plate, the intermediate high thermal conductivity aluminum alloy plate, and the inner food-grade stainless steel plate, utilizes the good strength and wear resistance of the carbon steel plate, the excellent thermal conductivity of the aluminum alloy, and the food-grade safety and corrosion resistance of the stainless steel. The tightly composite three-layer structure achieves efficient and uniform heat transfer, greatly improving cooking efficiency, preventing localized overheating or uncooking of food, and ensuring food safety and cooking quality.

Description

Technical Field

[0001] This utility model relates to the field of cookware technology, specifically to a three-layer metal cookware with high thermal conductivity. Background Technology

[0002] In the kitchen cooking process, the heat conduction performance of cookware is crucial, as it directly affects cooking efficiency, the taste of food, and energy consumption.

[0003] The existing patent document CN219306483U discloses a cookware that uses a composite bottom sheet and a metal sheet to limit the deformation of the bottom wall along its thickness direction, so that both the inside and outside of the pot can remain flat. This reduces the risk of oil flowing to the edge of the inner wall of the pot during cooking, allowing the oil to remain in the hottest part of the pot, thus improving the cooking experience. At the same time, it eliminates the need to increase the thickness of the bottom wall or use composite materials to reduce the cookware's deformability, thereby not significantly increasing the weight or cost of the cookware.

[0004] However, existing cookware, with its single-layer metal heat-conducting structure, is unable to bear the heavy responsibility of uniform and efficient heat conduction. In actual cooking, it is easy for food to burn in some places while other parts remain uncooked, which greatly damages the taste and cooking effect. Furthermore, these single-layer metal cookware have a relatively slow heat conduction speed, requiring a long time to reach the appropriate cooking temperature, thus wasting energy. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a three-layer metal cookware with high thermal conductivity, in order to solve the problem mentioned in the background art that the single-layer metal thermal conductivity structure of existing cookware is difficult to bear the heavy responsibility of uniform and efficient heat conduction during use.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a three-layer metal cookware with high thermal conductivity, comprising an outer layer of carbon steel plate, an inner layer of food-grade stainless steel plate disposed inside the outer layer of carbon steel plate, and an intermediate layer of high thermal conductivity aluminum alloy plate disposed between the outer layer of carbon steel plate and the inner layer of food-grade stainless steel plate.

[0009] Preferably, the high thermal conductivity aluminum alloy plate intermediate layer is located inside the cavity of the carbon steel plate outer layer, the upper opening edge of the high thermal conductivity aluminum alloy plate intermediate layer is at the same height as the upper opening edge of the carbon steel plate outer layer, and the high thermal conductivity aluminum alloy plate intermediate layer and the carbon steel plate outer layer are pressed together by a high temperature and high pressure composite process.

[0010] Preferably, the inner layer of the food-grade stainless steel plate is located in the cavity of the middle layer of the high thermal conductivity aluminum alloy plate, and the upper opening edge of the inner layer of the food-grade stainless steel plate is at the same height as the upper opening edge of the middle layer of the high thermal conductivity aluminum alloy plate. The inner layer of the food-grade stainless steel plate and the middle layer of the high thermal conductivity aluminum alloy plate are pressed together by a high temperature and high pressure composite process.

[0011] Preferably, an oxide-based metal-ceramic composite heat-insulating pot ring is disposed above the outer surface of the outer layer of the carbon steel plate, and the oxide-based metal-ceramic composite heat-insulating pot ring is bonded to the outer layer of the carbon steel plate by an organic silicone adhesive.

[0012] Preferably, the outer side of the oxide-based metal ceramic composite heat-insulating pot ring is provided with two sets of glass fiber reinforced plastic heat-insulating handles, and the two sets of glass fiber reinforced plastic heat-insulating handles and the oxide-based metal ceramic composite heat-insulating pot ring are injection molded by an inlay injection molding process.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This high thermal conductivity three-layer metal cookware is composed of an outer carbon steel plate, a middle high thermal conductivity aluminum alloy plate, and an inner food-grade stainless steel plate. It utilizes the good strength and wear resistance of carbon steel plate, the excellent thermal conductivity of aluminum alloy, and the food-grade safety and corrosion resistance of stainless steel. The three-layer structure is tightly combined to achieve efficient and uniform heat transfer, which greatly improves cooking efficiency, avoids local overheating or undercooking of food, and ensures food safety and cooking quality.

[0015] 2. This high thermal conductivity three-layer metal cookware is made by pressing a high thermal conductivity aluminum alloy plate middle layer, a carbon steel plate outer layer, and a food-grade stainless steel plate inner layer through a high temperature and high pressure composite process. This results in a strong bond between the layers, significantly reducing thermal resistance, ensuring efficient heat conduction between the layers, enhancing the overall structural stability of the cookware, extending its service life, and reducing problems such as delamination and deformation caused by thermal stress.

[0016] 3. This high thermal conductivity three-layer metal cookware features an oxide-based metal ceramic composite heat-insulating ring and a glass fiber reinforced plastic heat-insulating handle formed by injection molding on the outside of the heat-insulating ring. The heat-insulating ring effectively reduces heat transfer to the handle area, while the heat-insulating handle provides a comfortable and safe grip, significantly improving safety and convenience, preventing burns during cooking, and optimizing the user's cooking experience. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the outer layer of the carbon steel plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the inner layer of the food-grade stainless steel plate of this utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the oxide-based metal-ceramic composite heat-insulating pot ring of this utility model.

[0021] In the diagram: 1. Outer layer of carbon steel plate; 2. Inner layer of food-grade stainless steel plate; 3. Middle layer of high thermal conductivity aluminum alloy plate; 4. Insulated pot ring of oxide-based metal ceramic composite material; 5. Insulated handle of glass fiber reinforced plastic. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 - Figure 4This utility model provides a technical solution: a high thermal conductivity three-layer metal cookware, comprising a carbon steel outer layer 1, a food-grade stainless steel inner layer 2 inside the carbon steel outer layer 1, and a high thermal conductivity aluminum alloy intermediate layer 3 between the carbon steel outer layer 1 and the food-grade stainless steel inner layer 2. In the production and processing of this three-layer metal cookware, according to the cookware design requirements, a carbon steel plate of appropriate thickness and specifications is selected and cut to ensure its dimensions conform to the shape and size of the cookware's outer layer; an aluminum alloy plate with good thermal conductivity is selected and also cut according to the design dimensions to ensure compatibility with the carbon steel outer layer 1 and the subsequent food-grade stainless steel inner layer. For the inner layer 2, prepare stainless steel sheets that meet food safety standards and cut them to sizes that match the middle and outer layers. Clean and treat the surfaces of the carbon steel outer layer 1, the high thermal conductivity aluminum alloy middle layer 3, and the food-grade stainless steel inner layer 2 to remove oil, impurities, and oxide layers to ensure good bonding between the layers during high-temperature and high-pressure lamination. Place the high thermal conductivity aluminum alloy middle layer 3 into the cavity of the carbon steel outer layer 1, ensuring that the upper opening edges of both are at the same height. Then, place the food-grade stainless steel inner layer 2 into the cavity of the high thermal conductivity aluminum alloy middle layer 3, again ensuring that the upper opening edges are at the same height. Place the assembled three-layer metal into... In specialized high-temperature and high-pressure equipment, the metal layers are held at specific temperatures and pressures for a certain period of time, allowing them to bond firmly through atomic diffusion and other means, thus completing the composite pressing process. After comprehensive quality testing, the finished cookware is ready for sale. When the cookware is placed on a stove and heated, the heat source first contacts the outer carbon steel plate 1. The carbon steel plate has a certain thermal conductivity and can initially absorb heat. Because the high thermal conductivity aluminum alloy intermediate layer 3 is tightly bonded to the outer carbon steel plate 1 through a high-temperature and high-pressure composite process, and because the aluminum alloy has excellent thermal conductivity, heat is rapidly transferred from the outer carbon steel plate 1 to the high thermal conductivity aluminum alloy intermediate layer 3. The high thermal conductivity aluminum alloy plate middle layer 3 acts like a high-speed heat channel, rapidly diffusing heat to the surrounding areas and inner layers, greatly accelerating the overall heating speed of the cookware, reducing the time to reach the required cooking temperature, and improving energy efficiency. The high thermal conductivity aluminum alloy plate middle layer 3 evenly transfers heat to the food-grade stainless steel plate inner layer 2. Because the food-grade stainless steel plate inner layer 2 and the high thermal conductivity aluminum alloy plate middle layer 3 are also tightly connected through a high-temperature and high-pressure composite process, heat can be evenly distributed in the inner layers, ensuring that all parts of the food in the pot are heated evenly, avoiding the situation where food burns due to local overheating while some parts are not fully cooked, thus improving the cooking effect.

[0024] A high thermal conductivity aluminum alloy plate intermediate layer 3 is located inside the cavity of the carbon steel plate outer layer 1. The upper opening edge of the high thermal conductivity aluminum alloy plate intermediate layer 3 is at the same height as the upper opening edge of the carbon steel plate outer layer 1. The high thermal conductivity aluminum alloy plate intermediate layer 3 and the carbon steel plate outer layer 1 are pressed together by a high temperature and high pressure composite process. A food-grade stainless steel plate inner layer 2 is located inside the cavity of the high thermal conductivity aluminum alloy plate intermediate layer 3. The upper opening edge of the food-grade stainless steel plate inner layer 2 is at the same height as the upper opening edge of the high thermal conductivity aluminum alloy plate intermediate layer 3. The food-grade stainless steel plate inner layer 2 and the high thermal conductivity aluminum alloy plate intermediate layer 3 are pressed together by a high temperature and high pressure composite process. An oxide-based metal ceramic composite heat insulation pot ring 4 is set above the outer surface of the carbon steel plate outer layer 1. The oxide-based metal ceramic composite heat insulation pot ring 4 is bonded to the carbon steel plate outer layer 1 with an organic silicone adhesive. Two sets of glass fiber reinforced plastic heat insulation handles 5 are provided on the outer side of the composite material heat insulation ring 4. The two sets of glass fiber reinforced plastic heat insulation handles 5 and the oxide-based metal ceramic composite heat insulation ring 4 are injection molded by inlay injection molding process. The heat insulation ring is manufactured to meet the shape and size requirements through powder metallurgy and other processes to ensure that it has good heat insulation performance. Glass fiber and plastic raw materials are prepared and mixed evenly in a certain proportion to prepare for subsequent injection molding. The part above the outer surface of the carbon steel plate outer layer 1 where the heat insulation ring needs to be bonded is cleaned and polished to improve the bonding effect. Organic silicone adhesive is evenly applied to the bonding surface of the oxide-based metal ceramic composite heat insulation ring 4. The heat insulation ring with the adhesive applied is accurately pasted to the designated position of the carbon steel plate outer layer 1, and a certain pressure is applied to ensure that the two are tightly bonded. Wait for the adhesive to cure.According to the design requirements of the glass fiber reinforced plastic heat-insulating handle 5, the corresponding injection mold is prepared, and the mold is cleaned and preheated. The mixed glass fiber reinforced plastic raw material is heated to a molten state and injected into the mold cavity where the oxide-based metal ceramic composite heat-insulating pot ring 4 is pre-placed through an injection molding machine. The heat-insulating handle and the heat-insulating pot ring are tightly formed using an inlay injection molding process. After the plastic cools and solidifies, the mold is opened, and the pot with the heat-insulating handle is taken out for subsequent cleaning and repair. During the use of the pot, the temperature of the pot body will continue to rise. The oxide-based metal ceramic composite heat-insulating pot ring 4 is firmly bonded to the outer layer 1 of the carbon steel plate with an organic silicone adhesive. It possesses excellent heat insulation properties, effectively preventing heat transfer from the upper edge of the pot to the outside, reducing heat loss and concentrating more heat inside for cooking. Simultaneously, it lowers the temperature of the pot's edges, preventing accidental burns during operation. Two sets of glass fiber reinforced plastic heat-insulating handles 5 are tightly molded with the oxide-based metal-ceramic composite heat-insulating pot ring 4 using an inlay injection molding process. The glass fiber reinforced plastic has excellent heat insulation properties; when the user holds the handles, it effectively insulates against heat transferred from the pot, ensuring user comfort and safety. Even after prolonged use and when the pot is very hot, the pot can be easily operated, improving convenience and safety.

[0025] Working Principle: In the production and processing of this three-layer metal cookware, carbon steel plates of appropriate thickness and specifications are selected according to the cookware design requirements and cut to fit the shape and size of the outer layer. Aluminum alloy plates with good thermal conductivity are selected and cut to the same design dimensions to ensure compatibility with the outer carbon steel plate (1) and the subsequent food-grade stainless steel inner layer (2). Stainless steel plates meeting food safety standards are prepared and cut to dimensions matching the middle and outer layers. A heat-insulating pot ring with the required shape and size is manufactured using powder metallurgy and other processes to ensure good insulation. Thermal properties; Prepare glass fiber and plastic raw materials, mix them evenly in a certain proportion to prepare for subsequent injection molding; Clean and treat the surfaces of carbon steel plate outer layer 1, high thermal conductivity aluminum alloy plate middle layer 3 and food-grade stainless steel plate inner layer 2 to remove oil, impurities and oxide layer to ensure good bonding between the layers during high temperature and high pressure composite; Place high thermal conductivity aluminum alloy plate middle layer 3 in the cavity of carbon steel plate outer layer 1 so that the upper opening edge heights of the two are the same; Then place food-grade stainless steel plate inner layer 2 in the cavity of high thermal conductivity aluminum alloy plate middle layer 3, again ensuring that the upper opening edge heights are consistent. The assembled three-layer metal is placed in a specialized high-temperature, high-pressure equipment and held under specific temperature and pressure conditions for a certain period of time. This allows the metal layers to form a strong bond through atomic diffusion and other methods, completing the composite pressing process. The area on the outer surface of the carbon steel plate outer layer 1 where the heat insulation ring needs to be bonded is cleaned and polished to improve the bonding effect. Organic silicone adhesive is evenly applied to the bonding surface of the oxide-based metal-ceramic composite heat insulation ring 4. The heat insulation ring with the adhesive applied is accurately pasted onto the designated position on the carbon steel plate outer layer 1, and a certain pressure is applied to ensure a tight fit. Wait... Adhesive curing; According to the design requirements of glass fiber reinforced plastic heat insulation handle 5, prepare the corresponding injection mold, clean and preheat the mold, heat the mixed glass fiber reinforced plastic raw material to the molten state, and inject it into the mold cavity with oxide-based metal ceramic composite heat insulation pot ring 4 placed in advance through the injection molding machine. Use the inlay injection molding process to make the heat insulation handle and heat insulation pot ring tightly formed. After the plastic cools and solidifies, open the mold, take out the pot with heat insulation handle, and carry out subsequent cleaning and repair. After the finished pot is fully inspected, it can be shipped for sale.When the cookware is placed on the stove and heated, the heat source first contacts the outer carbon steel plate 1. The carbon steel plate has a certain degree of thermal conductivity and can initially absorb heat. Because the high thermal conductivity aluminum alloy middle layer 3 is tightly bonded to the outer carbon steel plate 1 through a high-temperature, high-pressure composite process, and because aluminum alloy has excellent thermal conductivity, heat is rapidly transferred from the outer carbon steel plate 1 to the high thermal conductivity aluminum alloy middle layer 3. The high thermal conductivity aluminum alloy middle layer 3 acts like a high-speed heat channel, quickly diffusing heat to the surrounding areas and the inner layers, greatly accelerating the overall heating speed of the cookware, reducing the time to reach the required cooking temperature, and improving energy efficiency. The high thermal conductivity aluminum alloy middle layer 3 then evenly transfers heat to the food-grade stainless steel inner layer 2. Because the food-grade stainless steel inner layer 2 and the high thermal conductivity aluminum alloy middle layer 3 are also tightly connected through a high-temperature, high-pressure composite process, heat can be evenly distributed in the inner layers, ensuring that all parts of the food in the pot are heated evenly, avoiding burning due to localized overheating. The undercooked condition improves the cooking effect. During use, the pot temperature continues to rise. The oxide-based metal-ceramic composite heat-insulating pot ring 4 is firmly bonded to the outer layer 1 of the carbon steel plate with silicone adhesive. The oxide-based metal-ceramic composite material has excellent heat insulation properties, effectively blocking heat from the upper edge of the pot to the outside, reducing heat loss, and concentrating more heat inside the pot for cooking. At the same time, this also reduces the temperature of the pot's edge, preventing accidental burns to the user during operation. Two sets of glass fiber reinforced plastic heat-insulating handles 5 are tightly molded to the oxide-based metal-ceramic composite heat-insulating pot ring 4 through an inlay injection molding process. Glass fiber reinforced plastic has excellent heat insulation properties. When the user holds the handles, it effectively insulates against heat transmitted from the pot, ensuring the comfort and safety of the user's hands. Even after prolonged use and when the pot temperature is very high, the pot can be easily operated, improving convenience and safety.

[0026] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A three-layer metal cookware with high thermal conductivity, comprising an outer layer of carbon steel plate (1), characterized in that: The outer layer (1) of the carbon steel plate is provided with a food-grade stainless steel inner layer (2). A high thermal conductivity aluminum alloy intermediate layer (3) is provided between the outer layer (1) of the carbon steel plate and the food-grade stainless steel inner layer (2). The high thermal conductivity aluminum alloy intermediate layer (3) is located in the cavity of the outer layer (1) of the carbon steel plate. The upper opening edge of the high thermal conductivity aluminum alloy intermediate layer (3) is at the same height as the upper opening edge of the outer layer (1) of the carbon steel plate. The high thermal conductivity aluminum alloy intermediate layer (3) and the outer layer (1) of the carbon steel plate are pressed together by a high temperature and high pressure composite process. The food-grade stainless steel inner layer (2) is located in the cavity of the high thermal conductivity aluminum alloy intermediate layer (3). The upper opening edge of the food-grade stainless steel inner layer (2) is at the same height as the upper opening edge of the high thermal conductivity aluminum alloy intermediate layer (3). The food-grade stainless steel inner layer (2) and the high thermal conductivity aluminum alloy intermediate layer (3) are pressed together by a high temperature and high pressure composite process.

2. The high thermal conductivity three-layer metal cookware according to claim 1, characterized in that: An oxide-based metal ceramic composite heat insulation pot ring (4) is provided above the outer surface of the carbon steel plate outer layer (1). The oxide-based metal ceramic composite heat insulation pot ring (4) is bonded to the carbon steel plate outer layer (1) by an organic silicone adhesive.

3. The high thermal conductivity three-layer metal cookware according to claim 2, wherein: Two sets of glass fiber reinforced plastic heat-insulating handles (5) are provided on the outside of the oxide-based metal ceramic composite heat-insulating pot ring (4). The two sets of glass fiber reinforced plastic heat-insulating handles (5) and the oxide-based metal ceramic composite heat-insulating pot ring (4) are injection molded by an inlay injection molding process.

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