kettle

Abstract

This utility model relates to a kettle, comprising a glass kettle body. The bottom wall of the glass kettle body, from top to bottom, is provided with a wear-resistant insulating upper layer (smaller than the glass kettle body's bottom wall), a metal base layer, a wear-resistant insulating lower layer, and a heating layer. The metal base layer is welded to the bottom wall of the glass kettle body. The wear-resistant insulating upper layer is disposed on the bottom wall of the glass kettle body, with the bottom wall forming a first connecting portion around the wear-resistant insulating upper layer. The metal base layer is larger than the wear-resistant insulating upper layer, and is disposed on the bottom surface of the wear-resistant insulating upper layer, forming a second connecting portion around the wear-resistant insulating upper layer. The first and second connecting portions are welded together to weld the glass kettle body and the metal base layer together. This invention achieves a strong bond between the glass kettle body and the metal base layer, significantly improving the overall structural strength and sealing performance.

Description

Technical Field

[0001] This utility model relates to a kettle. Background Technology

[0002] Electric kettles are widely used in daily life. Most electric kettles on the market today use plastic, metal or glass bodies and heating bases connected by adhesive or threads.

[0003] In glass kettle design, silicone gaskets, high-temperature resistant adhesives, or metal pressure rings are typically used at the bottom of the kettle to fix and connect it to the heating base, thereby achieving the connection between the heating element and the kettle body.

[0004] This type of connection method has the following drawbacks: Adhesive bonding processes are cumbersome, and adhesive materials are prone to aging and delamination in long-term high-temperature environments, leading to a decrease in sealing performance and structural strength. Adhesive or pressure ring connection methods can lead to uneven heat flow distribution, and local overheating of the heating layer can easily cause local cracking, affecting the safety of use. The overall thickness of the structure is relatively large, which limits the appearance design and makes it difficult to meet users' demand for thin, stylish home appliances. Utility Model Content

[0005] The purpose of this invention is to provide a water bottle that can ensure a tight bond between the glass body and the metal base layer, improve insulation performance, and is thin and light.

[0006] The purpose of this utility model is achieved as follows: A kettle includes a glass kettle body, wherein the bottom wall of the glass kettle body is provided with, from top to bottom, a wear-resistant insulating upper layer, a metal base layer, a wear-resistant insulating lower layer and a heating layer, the metal base layer being smaller than the bottom wall of the glass kettle body, and the metal base layer being welded together with the bottom wall of the glass kettle body.

[0007] The wear-resistant and insulating upper layer is disposed on the bottom wall of the glass pot body, and the bottom wall of the glass pot body forms a first connecting part around the wear-resistant and insulating upper layer. The size of the metal base layer is larger than the size of the wear-resistant insulating upper layer. The metal base layer is disposed on the bottom surface of the wear-resistant insulating upper layer and forms a second connection part on the periphery of the wear-resistant insulating upper layer. The first connecting part and the second connecting part are welded together to weld the glass pot body and the metal base layer together.

[0008] By setting a wear-resistant and insulating upper layer between the bottom wall of the glass pot and the metal base layer, and by using a welding connection between the first connecting part and the second connecting part, the present invention achieves a firm bond between the glass pot and the metal base layer, significantly improving the strength and sealing performance of the overall structure.

[0009] Compared with traditional adhesive bonding methods, the welding process of this invention simplifies the assembly process, reduces the risk of high-temperature adhesive aging and bonding failure, extends product lifespan, and reduces maintenance and repair costs.

[0010] This structural design eliminates unnecessary adhesives and pressure rings, resulting in a thinner overall thickness and a slim, integrated appearance that meets the demands of modern home appliances for stylish and simple designs, while also taking into account safety, durability, and aesthetics.

[0011] The objective of this utility model can also be achieved by the following technical measures: Furthermore, the metal substrate layer is a 304 stainless steel plate or a 316 stainless steel plate.

[0012] Preferably, the metal base layer material is limited to 304 stainless steel plate or 316 stainless steel plate. The excellent corrosion resistance and mechanical strength of these two stainless steel materials can further improve the durability and reliability of the heating module, ensuring that it is not easily oxidized or deformed even after long-term use in a high-temperature and humid environment.

[0013] Furthermore, the metal substrate layer is a 430 stainless steel plate, a 444 stainless steel plate, or a 445 stainless steel plate.

[0014] By replacing the metal base layer with 430 stainless steel plate, 444 stainless steel plate or 445 stainless steel plate, materials can be flexibly selected according to cost and corrosion resistance requirements. 430 stainless steel has a high cost performance, while 444 and 445 stainless steel perform better in chlorine-containing environments, meeting the needs of different users and application scenarios.

[0015] Furthermore, the first connecting part and the second connecting part are welded together using an ultra-high-speed laser welding process.

[0016] The use of ultra-high-speed laser welding technology enables rapid and precise welding connection between the first and second connecting parts. Compared with traditional welding methods, it effectively reduces the heat-affected zone, avoids stress concentration caused by local overheating in the glass pot body, and ensures welding quality and product consistency.

[0017] Furthermore, the wear-resistant insulating upper layer and the wear-resistant insulating lower layer are made of glass powder or ceramic powder materials.

[0018] The wear-resistant insulating upper and lower layers are made of glass powder or ceramic powder materials, which not only have excellent insulation and wear resistance, but can also withstand temperature cycles of up to several hundred degrees, further improving the stability and service life of the overall structure.

[0019] Furthermore, the heating layer includes a thin film layer and an electrode. The thin film layer is disposed on the bottom surface of the wear-resistant insulating lower layer, and the electrode is disposed on the bottom surface of the thin film layer. The thin film layer receives external current through the electrode to generate heat, which is then transferred to the glass pot body through the wear-resistant insulating lower layer, the metal substrate layer, and the wear-resistant insulating upper layer.

[0020] Furthermore, the thin film layer is a tin-antimony oxide thin film or a silver-palladium-platinum resistance paste thin film.

[0021] The thin film layer uses either tin-antimony oxide thin film or silver-palladium-platinum resistance paste film, which respectively have the advantages of good high-temperature stability, simple process or adjustable resistivity. It can be flexibly selected according to different power requirements and production process characteristics to further improve the performance of the heating layer and production efficiency.

[0022] The beneficial effects of this utility model are as follows: This invention achieves a firm bond between the glass pot body and the metal base layer by setting a wear-resistant and insulating upper layer between the bottom wall of the glass pot body and the metal base layer, and by adopting a welding connection method between the first connecting part and the second connecting part. This significantly improves the strength and sealing performance of the overall structure.

[0023] This invention employs ultra-high-speed laser welding technology to achieve rapid and precise welding connection between the first and second connecting parts. Compared with traditional welding methods, it effectively reduces the heat-affected zone, avoids stress concentration caused by local overheating on the glass body, and ensures welding quality and product consistency.

[0024] In this invention, the thin film layer is made of tin-antimony oxide thin film or silver-palladium-platinum resistance paste film, which have the advantages of good high-temperature stability, simple process or adjustable resistivity, respectively. It can be flexibly selected according to different power requirements and production process characteristics, so as to further improve the performance of the heating layer and production efficiency. Attached Figure Description

[0025] Figure 1 This is a diagram of a kettle.

[0026] Figure 2 This is a cross-sectional view of the kettle.

[0027] Figure 3 for Figure 2 Enlarged view of part A. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments: Implementation examples, in conjunction with Figures 1 to 3As shown, a kettle includes a glass kettle body 1. The bottom wall of the glass kettle body 1 is provided with a wear-resistant insulating upper layer 2, a metal base layer 3, a wear-resistant insulating lower layer 4, and a heating layer 5, which are smaller than the bottom wall of the glass kettle body 1, from top to bottom. The metal base layer 3 is welded to the bottom wall of the glass kettle body 1.

[0029] The wear-resistant and insulating upper layer 2 is disposed on the bottom wall of the glass pot body 1, and the bottom wall of the glass pot body 1 forms a first connecting part 6 around the wear-resistant and insulating upper layer 2. The size of the metal base layer 3 is larger than the size of the wear-resistant insulating upper layer 2. The metal base layer 3 is disposed on the bottom surface of the wear-resistant insulating upper layer 2. The metal base layer 3 forms a second connecting part 7 on the periphery of the wear-resistant insulating upper layer 2. The first connecting part 6 and the second connecting part 7 are welded together to weld the glass pot body 1 and the metal base layer 3 together.

[0030] Furthermore, the metal substrate layer 3 is a 304 stainless steel plate or a 316 stainless steel plate.

[0031] Furthermore, the metal substrate layer 3 is a 430 stainless steel plate, a 444 stainless steel plate, or a 445 stainless steel plate.

[0032] Furthermore, the first connecting part 6 and the second connecting part 7 are welded together using an ultra-high-speed laser welding process.

[0033] Furthermore, the wear-resistant insulating upper layer 2 and the wear-resistant insulating lower layer 4 are made of glass powder or ceramic powder materials.

[0034] Furthermore, the heating layer 5 includes a thin film layer and an electrode. The thin film layer is disposed on the bottom surface of the wear-resistant insulating lower layer 4, and the electrode is disposed on the bottom surface of the thin film layer. The thin film layer receives external current through the electrode to generate heat, which is then transferred to the glass pot body 1 through the wear-resistant insulating lower layer 4, the metal substrate layer 3, and the wear-resistant insulating upper layer 2.

[0035] Furthermore, the thin film layer is a tin-antimony oxide thin film or a silver-palladium-platinum resistance paste thin film.

[0036] The ultra-high-speed laser welding process can concentrate energy in microseconds to perform precise penetration welding on the first connection part 6 and the second connection part 7, resulting in an extremely narrow heat-affected zone. This minimizes thermal stress on the bottom wall of the glass, thus avoiding the risk of cracks and deformation to the greatest extent and ensuring the structural integrity and long-term stability of the weld.

[0037] Laser welding boasts extremely high welding speed and automation, significantly improving production cycle time and finished product yield while ensuring weld quality. By precisely controlling laser power, pulse frequency, and focusing position, consistent penetration depth and geometry can be achieved in every weld, thereby reducing rework rate and production costs.

[0038] This process requires no solder or flux, avoiding the risks of foreign matter residue and electrical performance degradation; the clean, fully penetrated weld interface meets food-grade safety and green manufacturing standards, making it particularly suitable for the production of household appliances with high hygiene and environmental protection requirements.

[0039] The diameter of the laser beam can be precisely adjusted to the tens of micrometers level, and it can flexibly weld along complex paths such as rings, lattices or spirals to meet the high positioning requirements of micro ring structures. At the same time, the process has no harmful smoke or dust emissions, making it environmentally friendly.

Claims

1. A kettle, comprising a glass kettle body (1), characterized in that: The bottom wall of the glass pot body (1) is provided with a wear-resistant insulating upper layer (2), a metal base layer (3), a wear-resistant insulating lower layer (4) and a heating layer (5) with a size smaller than the bottom wall of the glass pot body (1) in sequence from top to bottom. The metal base layer (3) and the bottom wall of the glass pot body (1) are welded together. The wear-resistant insulating upper layer (2) is disposed on the bottom wall of the glass pot body (1), and the bottom wall of the glass pot body (1) forms a first connecting part (6) around the wear-resistant insulating upper layer (2). The size of the metal base layer (3) is larger than the size of the wear-resistant insulating upper layer (2). The metal base layer (3) is disposed on the bottom surface of the wear-resistant insulating upper layer (2). The metal base layer (3) forms a second connection part (7) on the periphery of the wear-resistant insulating upper layer (2). The first connecting part (6) and the second connecting part (7) are welded together to weld the glass pot body (1) and the metal base layer (3) together; The first connecting part (6) and the second connecting part (7) are welded together by ultra-high speed laser welding process.

2. The kettle according to claim 1, characterized in that: The metal base layer (3) is a 304 stainless steel plate or a 316 stainless steel plate.

3. The kettle according to claim 1, characterized in that: The metal base layer (3) is a 430 stainless steel plate, a 444 stainless steel plate, or a 445 stainless steel plate.

4. The kettle according to claim 1, characterized in that: The wear-resistant insulating upper layer (2) and the wear-resistant insulating lower layer (4) are made of glass powder or ceramic powder materials.

5. The kettle according to claim 1, characterized in that: The heating layer (5) includes a thin film layer and an electrode. The thin film layer is disposed on the bottom surface of the wear-resistant insulating lower layer (4), and the electrode is disposed on the bottom surface of the thin film layer. The thin film layer receives external current through the electrode to generate heat and transfers it to the glass pot body (1) through the wear-resistant insulating lower layer (4), the metal substrate layer (3), and the wear-resistant insulating upper layer (2).

6. The kettle according to claim 5, characterized in that: The thin film layer is a tin-antimony oxide thin film or a silver-palladium-platinum resistance paste thin film.

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