Vacuum welding container
By creating a gap at the bottom of the vacuum container tube and laser welding protective components, the problems of poor sealing and high cost are solved, achieving efficient and environmentally friendly sealing and stable thermal insulation performance.
Patent Information
- Application Number
- CN202423216151.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing sealing methods for metal vacuum containers suffer from problems such as inadequate sealing, high cost, or easy damage, leading to increased vacuum layer pressure and failure of insulation performance.
By creating a gap at the bottom of the pipe and installing a protective component through laser welding, a tight welded seal structure is formed, avoiding the addition of external substances. The seal is achieved by melting the same substance at high temperature. Combined with the design of the preset gap and the bent end, the welding stability and sealing performance are ensured.
It achieves efficient and environmentally friendly sealing, reduces material input and environmental pollution, improves production efficiency, and ensures the stability and impact resistance of thermal insulation performance.
Smart Images
Figure CN223889155U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermos cup manufacturing technology, and in particular to a vacuum-welded container. Background Technology
[0002] Currently, the market is mainly classified into two types according to the sealing method: metal vacuum containers with tail seals and metal vacuum containers without tail seals.
[0003] Tail-sealed metal vacuum containers have a section of copper tube remaining at the bottom, employing a "pressure-sealing technology." The seal is achieved through the deformation of the copper tube. However, this seal is not ideal; the space between the inner and outer walls is a vacuum, a negative value less than atmospheric pressure. With prolonged use, air can enter the vacuum layer through gaps in the copper tube. Even a tiny, imperceptible gap in the seal, under negative pressure, will slowly draw air into the vacuum layer, increasing its pressure. As more air enters, the vacuum level decreases, ultimately causing the insulation performance to fail.
[0004] Tailless sealed metal vacuum containers have vacuum cavities created at the bottom of the metal container. A molten glass sealant then seals these cavities; this "melt-sealing technology" is used. However, this type of glass sealant is relatively expensive, and during use, the bottom of the metal vacuum container is easily damaged by impacts, causing the sealed glass to break and disrupting the vacuum environment, thus rendering the metal vacuum container ineffective at maintaining heat. Utility Model Content
[0005] The purpose of this invention is to provide a vacuum-welded container to solve the above-mentioned technical problems.
[0006] The technical solution adopted in this utility model is as follows:
[0007] A vacuum-welded container includes a bottle body, a tube bottom, and a getter. The tube bottom is located at the lower end of the bottle body. The bottle body includes an outer bottle body and an inner bottle body. An interlayer is formed between the outer bottle body, the inner bottle body, and the tube bottom. The getter is disposed within the interlayer. A slit is provided at the lower end of the tube bottom.
[0008] Preferably, at least one slit is provided.
[0009] Preferably, the surface area of the gap is greater than 2 mm. 2 .
[0010] Preferably, a protective element is also included, which is laser-welded to the lower end of the tube bottom at the position opposite the gap.
[0011] Preferably, the protective component includes one of a plastic base, a metal base, a plastic patch, and a silicone patch.
[0012] A vacuum-welded container includes a bottle body, a tube bottom, and a getter. The tube bottom is located at the lower end of the bottle body. The bottle body includes an outer bottle body and an inner bottle body. An interlayer is formed between the outer bottle body, the inner bottle body, and the tube bottom. The getter is disposed within the interlayer. The lower end of the outer bottle body is inserted into the upper outer edge of the tube bottom. A predetermined gap exists between the lower inner peripheral wall of the outer bottle body and the upper outer peripheral wall of the tube bottom.
[0013] As a further preferred option, the size of the preset gap is 0-0.5mm.
[0014] As a further preferred embodiment, the upper end of the tube bottom is bent inward to form a bent end, and the bent end is located inside the outer bottle body.
[0015] As a further preferred embodiment, a vacuum hole is provided at the upper connection between the outer bottle body and the inner bottle body.
[0016] The above technical solution has the following advantages or beneficial effects:
[0017] (1) In this utility model, by opening a gap at the bottom of the pipe and setting a protective component by laser welding, the gap area can be protected. The structure of seam welding and sealing is adopted. The welding and sealing process does not require the addition of any external substances. The two identical substances are completely melted together by laser welding at high temperature. This sealing method has high tightness and does not require external protection of the sealing area, thereby reducing the input of materials, reducing environmental pollution, achieving the effect of environmental protection, reducing processes, saving time, and enhancing the competitive advantage of products.
[0018] (2) In this utility model, by inserting the outer bottle body into the outer side of the upper end of the tube bottom and welding with a gap reserved between the outer bottle body and the tube bottom, no trace of process residue will be left, and the deviation during the welding process can be avoided, resulting in poor welding. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the vacuum-welded container in Example 1;
[0020] Figure 2 This is a schematic diagram of the structure of the bottle body and the bottom of the tube in Example 2;
[0021] Figure 3 This is a schematic diagram of the structure in Example 2 where the outer bottle body and the upper part of the inner bottle body are fitted together.
[0022] In the diagram: 1. Bottle body; 2. Tube bottom; 3. Getter; 4. Outer bottle body; 5. Inner bottle body; 6. Interlayer; 7. Protective component; 8. Bent end; 9. Vacuum port. Detailed Implementation
[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] Example 1
[0027] See Figure 1 As shown in this embodiment, a vacuum-welded container includes a bottle body 1, a tube bottom 2, and a getter 3. The tube bottom 2 is located at the lower end of the bottle body 1. The bottle body 1 includes an outer bottle body 4 and an inner bottle body 5, forming a sandwich 6 between the outer bottle body 4, the inner bottle body 5, and the tube bottom 2. The getter 3 is disposed within the sandwich 6, and a slit is provided at the lower end of the tube bottom 2. In this embodiment, the slit is a weld seam, used to cooperate with external vacuum equipment to perform vacuum treatment inside the sandwich 6. After vacuuming, the slit needs to be laser-welded, and the welding needs to be performed in a vacuum environment. The getter 3 can be placed at any position in the sandwich 6 to adsorb inert gases and residual moisture in the sandwich 6 after vacuuming. The upper ends of the outer bottle body 4 and the inner bottle body 5 can be integrally formed.
[0028] Furthermore, as a preferred embodiment, at least one slit is provided. In this embodiment, one slit is provided. In other embodiments, two or more slits may be provided.
[0029] Furthermore, as a preferred embodiment, the surface area of the gap is greater than 2 mm. 2 In this embodiment, the surface area of the gap needs to be greater than 2 mm. 2 If the weld surface area is too small, the insulation effect will be unstable. Only when the surface area of the gap is greater than 2mm can the insulation effect be achieved. 2 Only in this way can the heat preservation effect be guaranteed to be stable.
[0030] Furthermore, as a preferred embodiment, a protective element 7 is also included. The protective element 7 is laser-welded to the lower end of the tube bottom 2, directly opposite the gap. The protective element 7 can be one of a plastic base, a metal base, a plastic patch, or a silicone patch. The protective element 7 is used to protect the welded area of the gap. The protective element 7 is made of the same material as the tube bottom 2. The welding and sealing process does not require the addition of any external substances. Laser welding uses high temperatures to completely melt the two identical materials together. This sealing method has high tightness, is impact-resistant, and will not fail to maintain heat preservation due to impact at the bottom weld. The absence of external protection for the sealing area reduces material input, reduces environmental pollution, and achieves environmental protection. It also reduces processes, saves labor time, and enhances product competitiveness. Only a short vacuum period is needed for the thermos to maintain heat, allowing for continuous production and solving the problem of long production cycles.
[0031] Example 2
[0032] See Figure 2-3 As shown, a vacuum-welded container includes a bottle body 1, a tube bottom 2, and a getter 3. The tube bottom 2 is located at the lower end of the bottle body 1. The bottle body 1 includes an outer bottle body 4 and an inner bottle body 5. A sandwich layer 6 is formed between the outer bottle body 4, the inner bottle body 5, and the tube bottom 2. The getter 3 is disposed within the sandwich layer 6. The lower end of the outer bottle body 4 is inserted into the upper outer edge of the tube bottom 2. A predetermined gap exists between the lower inner peripheral wall of the outer bottle body 4 and the upper outer peripheral wall of the tube bottom 2. In this embodiment, the outer bottle body 4 and the tube bottom 2 are first connected by insertion, and then the outer bottle body 4 and the tube bottom 2 are connected and fixed by welding. Since the welding position is located inside the outer bottle body 4, there will be no traces of welding process residue. The getter 3 can be placed at any position in the sandwich layer 6 to adsorb inert gases and residual moisture in the sandwich layer 6 after vacuuming.
[0033] Furthermore, as a preferred embodiment, the preset gap size is 0-0.5mm, which results in better welding performance. Specifically, in this embodiment, the preset gap size (width) is 0.2mm.
[0034] Furthermore, as a preferred embodiment, the upper end of the tube bottom 2 is bent inward to form a bent end 8, which is located inside the outer bottle body 4. See also Figure 2 As shown, the sidewall of the tube bottom 2 bends inward from the middle to the top, and there is a preset gap between the lower inner wall of the outer bottle body 4 and the outer wall of the bent end 8, which ensures that the bent end 8 of the tube bottom 2 can smoothly enter the lower interior of the outer bottle body 4. This preset gap is a welding seam used for welding to connect and fix the outer bottle body 4 and the tube bottom 2. Furthermore, the outer bottle body 4 and the tube bottom 2 adopt a bent insertion fit, which can prevent misalignment during welding and thus avoid welding defects. In this embodiment, there is no need to set up an additional protective component 7, which can reduce the number of processes and save time.
[0035] Furthermore, as a preferred embodiment, a vacuum hole 9 is provided at the upper connection between the outer bottle body 4 and the inner bottle body 5. See also... Figure 3 As shown, a vacuum hole 9 is provided at the upper end of the outer bottle body 4 and the inner bottle body 5 to facilitate vacuuming of the interlayer 6. Then, the vacuum hole 9 is welded and sealed in a vacuum environment.
[0036] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A vacuum-welded container, characterized in that, The device includes a bottle body, a tube bottom, and a getter. The tube bottom is located at the lower end of the bottle body. The bottle body includes an outer bottle body and an inner bottle body. An interlayer is formed between the outer bottle body, the inner bottle body, and the tube bottom. The getter is located within the interlayer. A slit is provided at the lower end of the tube bottom.
2. The vacuum-welded container as described in claim 1, characterized in that, The slit has at least one opening.
3. The vacuum-welded container as described in claim 1, characterized in that, The surface area of the gap is greater than 2 mm. 2 .
4. The vacuum-welded container as described in claim 1, characterized in that, It also includes a protective component, which is laser-welded to the lower end of the tube bottom, directly opposite the gap.
5. The vacuum-welded container as described in claim 4, characterized in that, The protective component includes one of a plastic base, a metal base, a plastic patch, and a silicone patch.
6. A vacuum-welded container, characterized in that, The device includes a bottle body, a tube bottom, and a getter. The tube bottom is located at the lower end of the bottle body. The bottle body includes an outer bottle body and an inner bottle body. An interlayer is formed between the outer bottle body, the inner bottle body, and the tube bottom. The getter is disposed within the interlayer. The lower end of the outer bottle body is inserted into the upper outer edge of the tube bottom. A predetermined gap exists between the lower inner peripheral wall of the outer bottle body and the upper outer peripheral wall of the tube bottom.
7. The vacuum-welded container as described in claim 6, characterized in that, The size of the preset gap is 0-0.5mm.
8. The vacuum-welded container as described in claim 6, characterized in that, The upper end of the tube bottom is bent inward to form a bent end, and the bent end is located inside the outer bottle body.
9. The vacuum-welded container as described in claim 6, characterized in that, A vacuum hole is provided at the upper connection between the outer bottle body and the inner bottle body.