A container having a sealing structure

Abstract

The utility model discloses a container with sealing structure, including container body, copper ring and tin solder plug, the one side of container body is provided with the opening, is provided with copper ring in the opening, and the outer wall of copper ring is sealedly connected with the opening, and the middle of copper ring is provided with the injection hole, and tin solder plug sets up in the injection hole, and covers the outer surface of copper ring, this scheme sets up in the opening through copper ring, and carries out sealed and forms the injection hole, and cooperates with tin solder plug and realizes the injection hole sealing, utilizes the excellent wettability and metallurgical reaction of soldering tin to copper surface, forms the small dense alloy layer at interface, can improve the sealing effect, copper is strong inert metal as simultaneously, and its surface oxide layer is stable, and tin solder plug and copper tin alloy layer chemical property are mild, and all are not easy to have the corrosion, dissolution or component mutual solubility with organic phase change material, avoid the physicochemical reaction problem of traditional glue seal / block seal, further promote the sealing stability.

Description

Technical Field

[0001] This utility model relates to the field of container sealing technology, specifically to a container with a sealing structure. Background Technology

[0002] In the field of phase change material (PCM) storage technology, the container, as the core load-bearing component of PCM, directly affects the material's heat storage and release efficiency and long-term stability through the sealing performance of its injection port. Existing PCM containers typically fill the material through the injection port, relying on the heat absorption and storage properties and the heat release properties of PCM through morphological changes to achieve energy regulation. However, current injection ports generally use adhesive sealing or plug sealing methods. When sealing organic PCMs, the sealing material is prone to physicochemical reactions with the organic PCM, potentially compromising the integrity of the sealing structure and leading to leakage.

[0003] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a container with a sealing structure, which aims to solve the problem that the injection hole of the phase change material container in the prior art is easily sealed by glue injection or plugging, which can easily cause physical and chemical reactions and lead to leakage of phase change material.

[0005] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0006] A container with a sealing structure, comprising:

[0007] The container body has an opening on one side for injecting phase change material into the container body;

[0008] A copper ring is coaxially disposed within the opening; the outer wall of the copper ring is sealed to the inner wall of the opening, and an injection hole is provided in the middle of the copper ring;

[0009] A solder plug is placed inside the injection hole and covers the outer surface of the copper ring.

[0010] Furthermore, the inner wall of the injection hole is a closed curved surface, which is formed by rotating a circular generatrix around the central circular axis of the copper ring.

[0011] Furthermore, the container body is cylindrical, square, or irregular in shape.

[0012] Furthermore, the outer surface of the copper ring is arranged in an arc shape so that the outer surface of the copper ring and the outer surface of the container body are on the same arc surface.

[0013] Furthermore, the copper ring is circular or polygonal.

[0014] Furthermore, the copper ring is a tin-plated copper ring or a gold-plated copper ring.

[0015] Furthermore, the solder plug has a T-shaped cross-section, with one end located inside the injection hole and the other end covering the outer surface of the copper ring and the container body.

[0016] Furthermore, the container body is a plastic container body.

[0017] Furthermore, the container body and the copper ring are integrally injection molded.

[0018] Furthermore, the length of the copper ring is greater than the wall thickness of the container body.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] In this invention, an opening is provided on one side of the container body, and a copper ring is placed inside the opening. The outer wall of the copper ring is sealed to the opening, and an injection hole is provided in the middle of the copper ring. A solder plug is placed inside the injection hole and covers the outer surface of the copper ring. This solution forms an injection hole by placing a copper ring inside the opening and sealing it. The injection hole is sealed in conjunction with the solder plug. The excellent wettability and metallurgical reaction of solder on the copper surface form a fine and dense alloy layer at the interface, which can improve the sealing effect. At the same time, copper is a relatively inert metal with a stable surface oxide layer. The solder plug and the copper-tin alloy layer have mild chemical properties and are not prone to corrosion, dissolution, or component miscibility with organic phase change materials. This avoids the physicochemical reaction problems of traditional glue sealing / plugging and further improves the sealing stability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a cross-sectional structural diagram of the container body of this utility model.

[0023] Figure 3 for Figure 2 Enlarged diagram of point A in the diagram.

[0024] Figure 4 This is a schematic diagram of the exploded structure of the sealing structure of this utility model.

[0025] Figure 5 for Figure 4 Enlarged diagram of point B in the image.

[0026] The numbers in the diagram represent: 1. Container body; 11. Opening; 2. Copper ring; 21. Injection hole; 3. Solder plug. Detailed Implementation

[0027] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] 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.

[0030] In the field of phase change material (PCM) storage technology, the container, as the core load-bearing component of PCM, directly affects the material's heat storage and release efficiency and long-term stability through the sealing performance of its injection port 21. Existing PCM containers typically fill the material through the injection port 21, relying on the heat absorption and storage properties and the heat release properties of PCM through morphological changes to achieve energy regulation. However, current injection ports 21 generally use adhesive sealing or plug sealing methods. When sealing organic PCMs, the sealing material is prone to physicochemical reactions with the organic PCM, which may not only damage the integrity of the sealing structure leading to leakage but also affect the phase change performance and service life of the PCM, making it difficult to meet the technical requirements for long-term stable storage of PCM containers.

[0031] Meanwhile, both injection molding and sealing in existing technologies require cleaning of the injection port. If the injection port is contaminated, it will affect the seal, which will also make the sealing process more complicated and increase costs.

[0032] In view of the shortcomings of the prior art, this embodiment provides a container with a sealing structure, as detailed below:

[0033] As attached Figure 1 Appendix Figure 2 and attached Figure 3 As shown, a container with a sealing structure includes a container body 1, a copper ring 2, and a solder plug 3. An opening 11 is provided on one side of the container body 1, through which a phase change material can be injected into the container body 1. The copper ring 2 is coaxially disposed in the opening 11, and the outer wall of the copper ring 2 is sealed to the inner wall of the opening 11. An injection hole 21 is provided in the middle of the copper ring 2. The solder plug 3 is disposed inside the injection hole 21 and is sealed to the inner wall of the injection hole 21. A portion of the solder plug 3 is located outside the copper ring 2 and covers the outer surface of the copper ring 2 to achieve a sealing effect.

[0034] The container body 1 is a supporting component for storing phase change materials. An opening 11 on one side serves as an injection channel for the phase change materials. It can be made of high-temperature resistant plastic. The opening 11 is pre-sized to match the copper ring 2, and the container body 1 and copper ring 2 are integrally molded using injection molding to ensure a tight seal. The copper ring 2 is a ring-shaped metal component coaxially embedded in the opening 11. Its outer wall is pre-sealed with the inner wall of the opening 11 through an interference fit or integral injection molding. The central injection hole 21 serves as the final injection path for the phase change materials. It can be made of brass, utilizing the excellent thermal conductivity and chemical stability of copper to meet sealing requirements. In this design, the copper ring 2 provides a reliable welding base for the solder plug 3 and enhances the structural strength of the opening 11 area. The solder plug 3 refers to the sealing layer formed by filling the injection hole 21 with molten solder. This layer forms a tightly bonded alloy layer with the inner wall of the copper ring 2 through a metallurgical reaction, partially extending to the outer surface of the copper ring 2 to form a covering seal. The excellent wettability of solder on copper achieves a gapless seal. This solder plug 3 achieves the final seal of the injection hole 21 in this design, blocking the contact channel between the phase change material and the external environment.

[0035] Specifically, the container body 1, copper ring 2, and solder plug 3 work together to form a three-stage sealing structure: the opening 11 of the container body 1 and the outer wall of the copper ring 2 form a first-stage pre-seal, preventing the phase change material from leaking from the gap between the opening 11 and the copper ring 2; the inner wall of the injection hole 21 of the copper ring 2 and the inner side of the solder plug 3 form a second-stage main seal, and the channel is sealed by the filling of the solder plug 3; the part of the solder plug 3 extending to the outer surface of the copper ring 2 forms a third-stage covering seal, further enhancing the edge sealing effect.

[0036] Compared to existing technologies, traditional phase change containers often use adhesive sealing or plugging for the injection port 21. Adhesive sealing uses organic adhesives that are prone to swelling or chemical reactions with the organic phase change material, leading to seal failure. Plug sealing uses rubber or plastic plugs that degrade over time due to prolonged contact with the phase change material, and the assembly gaps are susceptible to leakage due to temperature changes. This solution utilizes a metal sealing structure of a copper ring 2 and a soldered plug 3. This structure leverages the chemical inertness of copper, tin, and the phase change material to avoid reaction risks. Simultaneously, the molten filling characteristics of the soldered plug 3 eliminate minute gaps, resolving the compatibility and sealing defects of traditional sealing methods.

[0037] Through the above technical solution, this application can achieve long-term stable sealing at the injection hole 21 of the phase change material container, solving the problems of leakage and phase change material performance degradation caused by poor material compatibility in traditional sealing methods, and improving the operational reliability and service life of the phase change energy storage device.

[0038] In this solution, no physical or chemical reactions will occur between copper, tin, and the phase change material. This is because: copper, as a relatively inert metal, has a stable surface oxide layer; the tin solder plug 3 and the copper-tin alloy layer have mild chemical properties and are not prone to corrosion, dissolution, or component miscibility with the organic phase change material; the melting points of copper and tin are much higher than the phase change temperature of the phase change material, so they will not soften, degrade, or swell due to temperature fluctuations and morphological changes caused by heat storage and release; moreover, the tight alloy layer formed by the metallurgical reaction between copper and tin is gapless and can effectively prevent the penetration of the phase change material. The surface state of copper and tin is stable and will not separate due to adsorption or penetration of the phase change material. From the perspective of material characteristics and structure, the risk of physical and chemical reactions is completely avoided, and it has good compatibility with the phase change material.

[0039] Furthermore, the structure of the solder plug 3 and the copper ring 2 used in this solution can also achieve a cleaning-free effect. When the solder is in a molten state, its wettability has a certain "self-cleaning" ability, which can push away, dissolve or directly evaporate contaminants (such as thin oxide layers or phase change liquids) on the surface of the copper ring 2, and tightly bond with the clean copper underneath. Compared with the existing structure that requires cleaning to seal, this application can effectively reduce the requirements for the initial cleanliness of the filling port and improve the sealing efficiency and sealing effect.

[0040] In this embodiment, the interior of the injection hole 21 is a closed curved surface, which is formed by rotating a circular generatrix around the central axis of the copper ring 2.

[0041] Specifically, the closed surface can be considered a torus in topology. This structure can be understood as follows: the diameter of the circular generatrix determines the curvature of the inner wall of the injection hole 21. For example, when the diameter of the generatrix is ​​3mm, the closed surface formed by rotation will exhibit a shape similar to a "ring tunnel," with its cross-section always remaining circular, and the center of each cross-section located on the same straight line parallel to the central axis of the copper ring 2 (i.e., the midline of the plane containing the generatrix). The distance between the plane containing the generatrix and the central axis (i.e., the radius of rotation) determines the overall size of the injection hole 21. If this distance is 5mm, it means that the shortest distance from the inner wall of the injection hole 21 to the central axis of the copper ring 2 is 5mm, and the formed holes will be evenly distributed around the central axis, without sharp edges or protrusions, and the curvature of the inner wall will smoothly transition.

[0042] Specifically, the closed curved surface structure ensures that the inner wall of the injection hole 21 has no right angles or sharp corners. When the solder plug 3 melts and fills, the molten solder can spread evenly along the smooth curved surface, avoiding air bubbles caused by local depressions or sharp corners, and ensuring the fit between the solder plug 3 and the inner wall. The continuous closed holes formed by the rotation of the circular generatrix maximize the contact area between the copper ring 2 and the solder plug 3, and the stress distribution at all points of the contact interface is uniform, which can reduce the risk of cracking of the sealing layer caused by temperature changes (such as thermal expansion and contraction when the phase change material stores and releases heat). The curved surface shape is compatible with the annular body structure of the copper ring 2, making the overall stress of the copper ring 2 more balanced, enhancing the structural stability of the opening 11, and avoiding deformation of the copper ring 2 caused by local stress concentration.

[0043] Compared with traditional straight hole or stepped hole structures, this closed curved surface injection hole 21 formed by rotating a circular generatrix can make fuller use of the wettability and fluidity of the solder plug 3, improve the reliability and durability of the seal, and is suitable for long-term repeated temperature cycling scenarios of phase change material containers.

[0044] In this embodiment, the container body 1 is cylindrical, square, or irregular in shape. By setting the container body 1 to a cylindrical, square, or irregular shape, it can adapt to the spatial requirements and functional goals of different application scenarios.

[0045] The cylindrical container body 1 has a circular cross-section and smooth curved sides, resulting in a symmetrical and balanced overall structure. The square container body 1 has a rectangular or square cross-section, and its planar sidewalls facilitate installation in close contact with the planar structures of other equipment (such as against a wall or the inner wall of an equipment shell), enhancing heat transfer efficiency through planar contact. Simultaneously, the rounded corners of the square structure reduce stress concentration, balancing structural stability and space utilization. The irregularly shaped container body 1 refers to a non-standard form customized according to the contours of a specific installation space, such as a curved surface combination structure adapted to irregularly shaped cavities inside equipment, or an irregularly shaped shell with protrusions or recesses. The form of this type of container needs to be customized based on the three-dimensional spatial parameters of the specific application scenario. Its inner wall can be designed with flow-guiding structures (such as arc-shaped flow-guiding ribs) according to the flow characteristics of the phase change material, ensuring uniform material distribution during shape changes.

[0046] In this embodiment, as shown in the appendix Figure 3 As shown, the outer surface of the copper ring 2 is arranged in an arc shape so that the outer surface of the copper ring 2 and the outer surface of the container body 1 are on the same arc surface.

[0047] When the container body 1 is cylindrical and its outer surface is an arc surface, the outer surface of the copper ring 2 (the surface exposed to the container body 1) will adopt an arc design with the same radius, and the start and end positions of the arc will be smoothly connected with the outer surface of the container body 1 to form an integrated curved surface without steps or protrusions.

[0048] In this embodiment, the copper ring 2 is circular or polygonal.

[0049] When the copper ring 2 is circular, it can be easily injection molded in one piece, and it is also convenient to pour the phase change liquid. When the copper ring 2 is polygonal, the circumference of the copper ring 2 will form sharp edges, which will increase the connection stability between the copper ring 2 and the container body 1 after the one-piece injection molding.

[0050] In this embodiment, copper ring 2 is a tin-plated copper ring or a gold-plated copper ring.

[0051] In this embodiment, as shown in the appendix Figure 4 and attached Figure 5 As shown, the solder plug 3 has a T-shaped cross-section, with one end of the solder plug 3 located inside the injection hole 21 and the other end covering the outer surface of the copper ring 2 and the container body 1.

[0052] The length of the solder plug 3 located in the injection hole 21 can be greater than or equal to the length of the injection hole 21.

[0053] The solder plug 3 has a T-shaped cross-section. One end fits against the inner wall of the injection hole 21 to form a radial seal, while the other end covers the junction of the copper ring 2 and the outer surface of the container body 1 to form an axial seal. The rounded corner transition avoids stress concentration. The double sealing redundancy improves reliability and can expand the connection area to buffer thermal stress and reduce the risk of solder layer detachment.

[0054] In this embodiment, the container body 1 is a plastic container body; the container body 1 and the copper ring 2 are injection molded. First, the position of the copper ring 2 is fixed, and then injection molding is performed to form an integral structure between the copper ring 2 and the container body 1.

[0055] In this embodiment, as shown in the appendix Figure 3 As shown, the length of the copper ring 2 is greater than the wall thickness of the container body 1.

[0056] This design allows one end of the copper ring 2 inside the container body 1 to extend beyond the inner wall of the container body 1, which not only enhances the connection strength between the copper ring 2 and the container opening 11, but also provides more sufficient attachment space for the solder plug 3 (making it easier for the solder plug 3 to form a more stable sealing structure in the part of the copper ring 2 that extends beyond the container body 1). At the same time, the extension of the copper ring 2 can buffer the deformation impact of the container body 1 caused by the thermal expansion and contraction of the phase change material, reduce stress damage to the sealing part, and improve the long-term stability of the overall seal.

[0057] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the solutions disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims.

Claims

1. A container with a sealing structure, characterized in that, include: The container body has an opening on one side for injecting phase change material into the container body; A copper ring is coaxially disposed within the opening; the outer wall of the copper ring is sealed to the inner wall of the opening, and an injection hole is provided in the middle of the copper ring; A solder plug is placed inside the injection hole and covers the outer surface of the copper ring.

2. A container with a sealing structure according to claim 1, characterized in that, The inner wall of the injection hole is a closed curved surface, which is formed by rotating a circular generatrix around the central circular axis of the copper ring.

3. A container with a sealing structure according to claim 1, characterized in that, The container body is cylindrical or square in shape.

4. A container with a sealing structure according to claim 3, characterized in that, The outer surface of the copper ring is arranged in an arc shape so that the outer surface of the copper ring and the outer surface of the container body are on the same arc surface.

5. A container with a sealing structure according to claim 1, characterized in that, The copper ring is circular or polygonal.

6. A container with a sealing structure according to claim 1, characterized in that, The copper ring is a tin-plated copper ring or a gold-plated copper ring.

7. A container with a sealing structure according to claim 1, characterized in that, The solder plug has a T-shaped cross-section, with one end located inside the injection hole and the other end covering the outer surface of the copper ring and the container body.

8. A container with a sealing structure according to claim 1, characterized in that, The container body is a plastic container body.

9. A container with a sealing structure according to claim 8, characterized in that, The container body and the copper ring are integrally injection molded.

10. A container with a sealing structure according to claim 1, characterized in that, The length of the copper ring is greater than the wall thickness of the container body.

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