TEAPOT AND KEEPERS SET WITH MULTI-LAYERED COMPOSITE WALL STRUCTURE AND ITS MANUFACTURING METHOD.

Abstract

The invention relates to a teapot (10) used for brewing tea, comprising a body (12) defining an internal volume and a base (15) adjacent to the body (12). The teapot has a common composite wall consisting of three interconnected layers: an inner layer (A) extending integrally from the base (15) to the body (12), facing the internal volume of the teapot (10); an intermediate layer (B) in contact with the inner layer (A) along its outer surface; and an outer layer (C) in contact with the intermediate layer (B) along its outer surface. The intermediate layer (B) is made of a material with higher thermal conductivity than the inner layer (A) and the outer layer (C).

Description

1 TARIFF TEAPOT AND KEBABS SET WITH MULTI-LAYERED COMPOSITE WALL STRUCTURE AND ITS PRODUCTION METHOD Technical Area The invention relates to the brewing, heating, and preservation at a specific temperature of beverages, particularly tea. a metal wall that extends as a single unit from its base to its body, used for the purpose of... It relates to teapots and kettles with similar structures. 10 State of the Art Traditionally, beverage preparation processes involve a lower water reservoir where the water is heated. Tea sets consisting of a teapot at the top where the brewing process takes place. 15 These equipment are used with food contact suitability, hygiene standards and high quality. Due to factors such as corrosion resistance, stainless steel is typically used as the body material. Steel is preferred. Single-layer stainless steel has a relatively low thermal conductivity coefficient. This physical characteristic... In order to overcome the limitation and prevent localized overheating at the base, the technique In its current form, capsule base applications have become standard practice. Capsule-based In structures, a thick layer with high thermal conductivity is applied to the bottom surface of a single-layer stainless steel body. an aluminum disc and an outer stainless steel plate protecting this disc, pressed or soldered. They are later combined through these processes. 25 Although capsule floor applications are partially successful in distributing heat transfer across the floor surface, It has fundamental disadvantages in terms of practical use and thermodynamic efficiency. Capsule The aluminum base, which is a conductive layer that provides high heat transfer in its structure, is only present in the base. It is limited to this area. The side walls of the teapot, extending along the vertical axis, are single-layered 30 Because it remains made of stainless steel, heat taken from the base spreads throughout the body. It cannot be transmitted upwards homogeneously. More importantly, the single-layered lateral layer... Since the walls do not provide thermal insulation, heat in the interior space is transferred through the large body surface. It is rapidly transferred to the ambient atmosphere. This allows the beverage to maintain its ideal temperature. This requires the heat source to be kept constantly active; therefore, it results in high energy consumption. 35 And constant exposure to high temperatures causes the tea to become bitter. In addition to this... 2 Similarly, single-layer metal or glass covers on standard products also allow heat to flow upwards. Due to natural convection, it leads to significant heat losses from the peak. A BRIEF DESCRIPTION OF THE INVENTION The aim of the invention is to create a teapot that transmits isotropic heat flux from the base to the lateral body walls, and regional excess during tea brewing with a teapot negatively affects the brewing process. The goal is to prevent overheating. To achieve the aforementioned purpose, the invention is a teapot with an internal volume of 10 It is a teapot that includes a body and a base attached to the body, and the teapot consists of both the body and the base. and the base, extending seamlessly from the base to the body, within the internal volume of the teapot an inner layer, an intermediate layer that contacts the inner layer along its outer surface, and an intermediate layer three interconnected layers, including an outer layer that contacts the outer surface of the other layer. It has a common composite wall consisting of layers. Here, the interlayer is the inner layer and 15 It is made of a material that has higher thermal conductivity than the outer layer. In this way, The thermal energy provided by the heat source is not only trapped in the base region; it is also concentrated in the intermediate region. Thanks to the high thermal conductivity of the layer, vertical and radial flows are possible along the monolithic body walls. By providing rapid, isotropic thermal diffusion along the axes, regional superheating zones are eliminated. formation is prevented. 20 Ideally, the inner layer is made of stainless steel. In the teapot body, in the main structure... The inner part of the composite wall, which is monolithic and has high thermal conductivity, is in direct contact with the liquid. The use of stainless steel on its surface provides high chemical inertness in contact with food and By providing corrosion resistance, it prevents structural degradation against acidic components, while the steel's 25 Its relatively low thermal conductivity slows down the outward diffusion of heat from the inner surface, thus reducing thermal conductivity. It increases determination. Preferably, the inner layer is made of AISI 304 grade stainless steel. Austenitic microstructure. The high nickel and chromium content of AISI 304 stainless steel gives the material a high 30 The ductility capacity is achieved through composite deep-seated material that is integrated with an aluminum interlayer. by damping thermomechanical tensile stresses during the tensile process in internal curves It prevents the formation of microcracks and fatigue. In this way, it ensures a long lifespan for the teapot. Structural integrity is ensured against thermal stresses. 35 Preferably, the outer layer is made of stainless steel. It is a monolithic structure and high-performance. the outer surface of the interlayer which has thermal conductivity but relatively low mechanical resistance 3 The fact that it is made of stainless steel increases the overall bending rigidity of the composite system, thus improving the exterior. It forms a protective structure against deformations. Preferably, the outer layer is made of AISI 430 grade stainless steel. AISI 430 stainless steel The characteristic ferromagnetic structure of steel, combined with the high-frequency radiation produced by induction furnaces, makes it difficult to resist heat. its direct adaptation to magnetic fields and, when needed, the induction of the teapot alone It enables heating. Ideally, the interlayer is made of aluminum or an aluminum alloy. Two High-conductivity monolithic aluminum structure integrated between stainless steel layers, 10 Thanks to its high thermal conductivity, the heat taken from the base is transferred to the vertical and lateral sides of the teapot. It enables the instantaneous and multi-axial transfer of data to their surfaces. Preferably, the interlayer is made of 1050 grade aluminum. Minimum in the interlayer. Selecting high-purity 1050 grade aluminum containing alloying elements results in a thermal conductivity of 15. while maximizing; the monolithic body is formed by deep drawing with outer and inner steel layers. exhibiting a simultaneous viscoplastic flow and the desired, sharp-edged or radial-edged It enables the application of various forms of industrial design. Ideally, the intermediate layer should be 20 to facilitate deep drawing operations during production. its thickness will be greater than both the thickness of the inner layer and the thickness of the outer layer It has an asymmetrical structure. This asymmetrical design is due to the multi-layered sheet metal extending from the base to the body. The thick and ductile aluminum core, provided by the thickness distribution, during forming An elastomeric structure is formed under the compressive and tensile forces to which thin layers of steel are subjected. It provides cushioning and has a complex, deep form with a composite structure like a teapot. 25 It has been observed that it makes it possible to give it. Ideally, the thickness of the inner layer should be between 0.30 mm and 0.70 mm, and the thickness of the intermediate layer should be 0.70 mm. The thickness of the inner layer ranges from 0.40 mm to 0.80 mm, and the thickness of the outer layer ranges from 0.40 mm to 0.80 mm. These thickness ratios ensure that the thin inner steel wall of the teapot allows for heat transfer to the liquid by 30. while accelerating, the relatively thicker outer steel wall resists circumferential pressures and intra-mold friction. It ensures the integrity of the opposing body. At the same time, in the tests, the composite structure... Thanks to the aluminum interlayer, the teapot's heat conduction ensures optimum heat distribution for brewing tea. It has been observed that it ensures homogeneity. 35 Ideally, the final product of the teapot should include any imperfections resulting from the production processes. In this form, the thickness of the inner layer is between 0.490 mm and 0.500 mm, and the thickness of the intermediate layer... 4 The thickness of the outer layer is 0.900 mm, and the thickness of the outer layer ranges from 0.590 mm to 0.600 mm. This is achieved through deep drawing. In the plastic thinning caused by the teapot forming processes, the composite sheet is subjected to This indicates that it is based on strain hardening. Ideally, the composite wall, consisting of an inner layer, an intermediate layer, and an outer layer, should have a total of 5 layers. Its thickness ranges from 1.50 mm to 2.50 mm. The composite material extends seamlessly from the base to the body. The cross-section of the wall must withstand the moment of inertia in the area that will resist the circumferential stresses occurring in the cylindrical structure. while providing this, it extends the thermal time constant after the heat source is switched off and reduces heat losses. A teapot was obtained. Ideally, a spout located on the body, a handle fixed to the body, and The teapot has a lid that fits easily onto the top. This allows the teapot to be closed comfortably. It is possible to use it. Ideally, the lid has a double-walled structure made of AISI 304 grade stainless steel. 15 The cover creates a homogeneous insulation effect at the heat escape point in the vertical direction, and It has been observed that the tea in the teapot stays hot for a long time. Preferably, with the described teapot and the teapot underneath it, placed over a heat source. A teapot set with an integrated lower water reservoir suitable for placement 20 It has been created. A three-layered, monolithic teapot module with high thermal conductivity. Direct use with the lower water tank, the steam formed during boiling in the lower phase The composite conductive base on top of the teapot allows for quick brewing of tea. One application of the invention to achieve the aforementioned purpose is the 25th teapot described above. It includes the production method. Here, the inner layer, intermediate layer, and outer layer are combined. It is rolled and this rolled structure is shaped into a teapot form by deep drawing molding. They are brought together by rolling plates with different metallurgical structures. It is bonded by solid-state diffusion bonding under high pressure. A multiaxial deep During tensile testing, the composite structure reacts like a monolithic block, exhibiting tensile tears of 30°. It prevents. BRIEF DESCRIPTION OF THE FIGURES Figure 1 shows the teapot, lid and lower water reservoir with a multilayered composite wall, which is the subject of the invention. 35 The overall design of the teapot set, showing an integrated representation of its modules. It is a perspective view. Figure 2 shows the inventor's teapot, which consists of a single, continuous piece extending from its horizontal base to its vertical body. its multilayered structure and asymmetric wall layers arranged from the inside out (A, B, C) It is a partial cross-sectional view that provides details. DETAILED DESCRIPTION OF THE INVENTION 5 In this detailed description, the subject matter of the invention may be developed without any restrictions and The explanation is given with references to examples simply to better illustrate the topic. The teapot set, which is the subject of the invention, is shown in perspective in Figure 1. Teapot (10), 10 It is the upper module of the teapot set. The teapot (10) is for brewing liquid drinks, such as tea and a deep cut along the vertical axis, narrowing from bottom to top, for the purpose of preservation It defines a closed internal volume of conical or cylindrical shape. The teapot (10) is a pressed-out externally. Without including a capsule base attachment, no interruption from the horizontal axis to the vertical axis, It has a monolithic three-layered composite structure that contains no welds or assembly joints. 15 The lid (11) closes the circular top opening of the teapot (10), reducing the volume of liquid to the outside environment. It protects. The cover (11) is double-walled, made of austenitic AISI 304 grade stainless steel. It has a construction consisting of a low thermal conductivity coefficient enclosed between two stainless steel plates. The stagnant air chamber reduces heat transfer by conduction and convection, creating a chamber at the top of the teapot (10). It provides insulation. The body (12), the teapot (10) and the system circumferential 20 on the vertical axis It is a conically formed structure that defines its boundaries. It takes heat from the base and distributes it radially to the lateral areas. It functions as an active heat transfer surface that distributes heat axially. Handle (13), Minimum thermal bridge to the outer surface of the teapot (10) and the body (12) of the system lower chambers polymeric (e.g., phenolic resin or bakelite) fixed point-to-point in such a way as to form a structure. It is a mechanical extension in the form of an arm made of composites. The body (12) 25 on the vertical axis It extends in accordance with its profile. The discharge nozzle (14) is structurally compatible with the body (12). integrated, providing laminar discharge during the pouring of liquid from the internal volume, at the end. It has a V-shaped nozzle profile that tapers gradually. The base (15) forms the lower horizontal platform of the teapot (10) and is circular in shape. Base (15) is connected to the body (12) with a radius, not with a sharp corner. Lower water tank 30 (20) is the lower chamber, placed adjacent to the bottom of the teapot (10), which boils the water over the heat source. The lower water reservoir (20) has a geometric form that complements the teapot (10) and from its base (15) It is made of sheet metal that extends continuously to the body (12). As seen in the cross-sectional view in Figure 2, the teapot (10) and the lower water tank (20) a single composite wall extending from the base (15) to the body (12), 35 from inside to outside specific, radially arranged sequentially and joined together only by solid-state diffusion. It consists of three different layers (A, B, C). 6 Inner Layer (A) is directly in contact with hot and acidic liquids such as tea extract in the inner volume of the teapot (10). It forms the contact surface. Full compliance with the food codex, high chemical inertness and AISI 304 grade stainless steel with an austenitic microstructure to provide corrosion resistance. It is made of steel. Within the scope of the invention, the inner layer (A) is in sheet form prior to production. Its nominal thickness is 0.50 mm. The Intermediate Layer (B) is placed between the inner layer (A) and the outer layer (C). a structure confined by metallurgical pressure that enables high-speed thermal conduction of the system It consists of high-purity 1050 grade steel with a thermal conductivity of approximately 230 W / m·K. It is manufactured from aluminum. It balances the thermal mass of the system and is deep-drawn. nominal thickness of the intermediate layer (B) before production which acts as a cushion in the process With an asymmetrical design, it is sized at the highest value of 0.90 mm. Outer Layer 10 (C), the composite structure forming the teapot (10) is exposed to the outside atmosphere and heat from an induction hob. It is the part that is directly exposed to the sources. Thanks to its ferromagnetic characteristic, it has high Ferritic AISI 430 grade stainless steel capable of providing heating in frequency induction fields. Made of steel. The composite system is resistant to environmental pressures and in-mold friction. To improve the integrity of the fuselage, the inner layer (A) was chosen to be mechanically thicker than 15 The nominal thickness before production is 0.60 mm. The production of teapots (10) started with a sheet metal thickness of 2.00 mm (0.50 / 0.90 / 0.60 mm) An asymmetrical multi-layered structure is created. This process is more suitable for teapot-like shapes rather than shallow forms. (10) and in a deep curved, high-drawdown geometry like the lower water reservoir (20), no The ability to transform it without delamination and tearing requires specific process steps and 20 It requires the following parameters. In the first stage, 0.50 mm AISI 304 is rolled together. Surface oxides of (A), 0.90 mm 1050 Aluminum (B) and 0.60 mm AISI 430 (C) sheets. The panels are cleaned using chemical and mechanical brushing methods and then stacked on top of each other. The panels are high-quality. In a torque rolling mill, a vertical rolling mill typically operates at pressures ranging from 150 MPa to 400 MPa. They are subjected to pressure. Under this force, the steel and aluminum crystal lattices are atomically 25 They interlock at several levels, forming solid-state diffusion bonds. Air gaps at the interfaces and therefore the thermal contact resistance is completely zero, with a total nominal value of 2.00 mm. A sheet metal of a certain thickness is obtained, which is a monolithic structure with inseparable layers. In the next stage, the following is obtained The 2.00 mm thick monolithic composite sheet metal is loaded onto hydraulic press lines. Pot ring sheet metal. while securing from the outer flanges with a holding pressure of approximately 3 to 8 MPa; mold punch 300 30 By applying a tensile / compressive force of kN, it pushes the sheet metal deeply into the female die and It forms the stem (12) and base (15). In deep drawing, the greatest risk of fracture is due to stresses in the outer and inner curves. In the center... 0.90 mm ductile aluminum interlayer (B), viscoplastic flow during pressing. by exhibiting an elastomeric cushion between two rigid steel layers, the inner and outer layers (A, C) 35 It works like this and absorbs the tearing energy. The thickness of the outer layer (C) is (0.60 Choosing the inner layer (A) (0.50 mm) larger than the outer layer (A) stabilizes the neutral axis, 7 It increases the necking limit of the material against high friction at the mold wall and the outside. It prevents cracking on the surface. Due to the nature of the high-tonnage deep drawing process, It creates elongation along the vertical axis (z-axis) in the shaped material. The material In accordance with the principle of conservation of volume, this elongation results in strain hardening in the wall thickness. and leads to plastic thinning. According to physical measurement values; the produced teapot (10) and water jug ​​5 (20) In its final form, when controlled deformation along the wall is measured; pre-production 0.50 The thickness of the inner layer (A), which is 0.005 to 0.010 mm, decreases to 0.490 mm to 0.500 mm. It is located within the mm range. The 0.60 mm outer layer is subjected to similar mold stresses. (C) thins down to a range of 0.590 mm to 0.600 mm. However, there is a high difference between the two steels. The aluminum interlayer (B), subjected to hydrostatic pressure, retains its volume of 0.900 mm³. It remains within the reference thickness. These tight tolerance physical limits (-0.005 to -0.010 mm microns) (thinning), the product undergoes the aforementioned deep drawing process without losing its integrity. This indicates that it has been removed. The total composite wall thickness of the teapot is optimum thermodynamic. The area is fixed between 1.50 mm and 2.50 mm, which will provide the moment of inertia. In the final stage of manufacturing, the open mouth sections of the formed bodies (12) are trimmed 15 It is subjected to the operation and the components of the cover (11), handle (13), and spout (14) are spot-welded. The assembly into a monolithic structure is completed by welding or pressing methods. REFERENCE NUMBERS Teapot 11 Covers 12 Fuselages 13 Handles 14 Discharge nozzle 25 Base Lower water reservoir A Inner layer B Intermediate layer C Outer layer 30

Claims

8 REQUESTS 1. A stem (12) and a stem (12) that define an internal volume, used for brewing tea. It is a teapot (10) with an adjacent base (15), the feature of which is that both the body (12) and the base (15), extending as a single piece from the base (15) to the body (12); the teapot 5 (10) an inner layer (A) facing the inner volume, in contact with the inner layer (A) along the outer surface. an intermediate layer (B), and an outer layer (B) that is in contact with the intermediate layer (B) along its outer surface. a common composite wall consisting of three interconnected layers, with layer (C) having, and the intermediate layer (B) is more than the inner layer (A) and the outer layer (C) It is made of a material with high thermal conductivity. 10 2. A teapot (10) conforming to Claim 1, the feature of which is that the inner layer (A) is made of stainless steel. It is the fact that it has been done.

3. A teapot (10) conforming to Claim 2, the feature of which is; inner layer (A) AISI 304 quality It is made of stainless steel.

4. A teapot (10) suitable for any of the previous requirements, its feature being; the outer layer is 15 (C) It is made of stainless steel.

5. A teapot (10) conforming to Request 4, the feature of which is; the outer layer (C) is AISI 430 quality It is made of stainless steel.

6. A teapot (10) suitable for any of the previous requirements, and its feature is; the intermediate layer (B) It must be made of aluminum or an aluminum alloy. 20 7. A teapot (10) conforming to claim 6, its feature being; the intermediate layer (B) 1050 quality. It is made of aluminum.

8. A teapot (10) suitable for any of the previous requirements, its feature being; production intermediate layer (B) to facilitate deep drawing operations during its thickness is 25 times greater than the thickness of the inner layer (A) and the thickness of the outer layer (C). It is large and has an asymmetrical structure.

9. A teapot (10) that conforms to any of the previous requirements, and its feature is that the inner layer (A) with a thickness between 0.30 mm and 0.70 mm, and the thickness of the intermediate layer (B) between 0.70 mm and between 1.10 mm and the thickness of the outer layer (C) between 0.40 mm and 0.80 mm. That is. 30 10. A teapot (10) conforming to claim 9, whose characteristic is; resulting from the production processes. the inner layer (A) in the final form of the teapot (10) to include the thinnings its thickness is between 0.490 mm and 0.500 mm, the thickness of the intermediate layer (B) is 0.900 The thickness of the outer layer (C) is between 0.590 mm and 0.600 mm.

11. A teapot (10) that conforms to any of the previous requirements, and its feature is; inner layer (A), 35 The total thickness of the composite wall formed by the intermediate layer (B) and the outer layer (C) It should be between 1.50 mm and 2.50 mm. 9 12. A teapot (10) suitable for any of the previous requirements, its feature being; body (12) a spout (14) on it, a handle (13) fixed to the body (12) and The teapot (10) must include a lid (11) suitable for closing from the top.

13. A teapot (10) conforming to Request 12, the feature of which is; the lid (11) is AISI 304 quality. It has a double-walled lid made of stainless steel. 5 14. With a teapot (10) and the bottom of the teapot (10) as defined in any of claims 1 to 13, a subsurface suitable for positioning above a heat source A teapot set containing a reservoir (20).

15. A teapot (10) that conforms to any of the requirements 1 to 13, and whose characteristic is; inside Rolling the outer layer (A), intermediate layer (B) and outer layer (C) together; 10 The process of transforming the rolled structure into a teapot form through deep drawing molding. It includes the step.