Sandwich board for refrigeration house

Abstract

The embodiment of the utility model provides a sandwich panel for a refrigeration house, which comprises an upper-layer panel, a lower-layer panel, an upper-layer panel and a lower-layer panel, wherein the upper-layer panel is used for providing an upper closed structure and bearing a cold air environment; the lower-layer panel is parallel to the upper-layer panel and is used for providing a lower sealing structure and a supporting effect; the skeleton frame is connected between the upper-layer panel and the lower-layer panel, and the skeleton frame is of a crossed truss structure and is provided with diagonal bracings; the heat insulation core layer is filled between the upper-layer panel and the lower-layer panel and is used for preventing heat transfer; the edge sealing piece is fixedly connected to the outer side edge of the sandwich panel; beam strips of the skeleton frame are of a multi-cavity structure, a plurality of sets of independent cavities are formed in the beam strips, reinforcing ribs are embedded between the beam strips of the skeleton frame to enhance the bearing capacity, and the outer portion of the skeleton frame is covered with an anti-corrosion coating. Through the scheme of the embodiment of the invention, the bearing capacity and the anti-seismic property can be improved.

Description

Technical Field

[0001] This application relates to the field of refrigeration equipment technology, specifically to a sandwich panel for cold storage. Background Technology

[0002] Sandwich panels for cold storage are composite material panels specifically designed for cold storage construction. They typically consist of a metal panel and an internal insulation core (such as polyurethane or rock wool), offering excellent thermal insulation and low-temperature resistance, effectively meeting the temperature and humidity control requirements of cold storage facilities. However, in practical applications, these sandwich panels may suffer from insufficient load-bearing capacity and weak seismic performance, especially in environments requiring heavy external loads or located in earthquake-prone areas. Their structural stability and safety face certain challenges, affecting their effectiveness in some high-standard scenarios. Summary of the Invention

[0003] In view of this, the present disclosure provides a sandwich panel for cold storage, which at least partially solves the problems existing in the prior art.

[0004] This application discloses a sandwich panel for cold storage, comprising:

[0005] The upper panel serves to provide an enclosed upper structure and support the cooling environment.

[0006] The lower panel, which is arranged parallel to the upper panel, is used to provide a lower enclosed structure and support.

[0007] A skeleton frame is connected between the upper panel and the lower panel, wherein the skeleton frame is a cross truss structure and is provided with diagonal bracing;

[0008] An insulating core layer is filled between the upper panel and the lower panel to prevent heat transfer;

[0009] Edge sealing components are fixedly connected to the outer edge of the sandwich panel;

[0010] The beams of the frame are multi-cavity structures with multiple independent cavities inside. Reinforcing ribs are embedded between the beams of the frame to enhance the load-bearing capacity. The exterior of the frame is covered with an anti-corrosion coating, which is applied to the welding area at each intersection of the frame.

[0011] Preferably, the upper panel and the lower panel are fixedly connected to the skeleton frame by multiple sets of connecting columns, and the multiple sets of connecting columns are distributed at the node positions of the skeleton frame.

[0012] Preferably, the upper panel includes an outer surface coating that is waterproof and reflects heat radiation.

[0013] Preferably, the bottom of the lower panel is provided with multiple sets of support feet, and the support feet can be adjusted in height to adapt to installation surfaces with different flatness.

[0014] Preferably, the angle range of the cross trusses in the skeleton frame is 45° to 75°, in order to adjust the load distribution and reduce the risk of structural deformation.

[0015] Preferably, the heat insulation core layer is composed of multiple layers of composite material, wherein at least one layer contains flame-retardant filler to improve fire resistance.

[0016] Preferably, the independent cavity is filled with shock-absorbing foam to enhance the seismic performance of the frame under dynamic loads.

[0017] Preferably, the edge sealing member is provided with a sealing groove, and the sealing groove is filled with elastic sealant to improve the moisture-proof and heat-insulating effect.

[0018] This disclosure provides a sandwich panel for cold storage, comprising: an upper panel for providing an upper enclosed structure and supporting a cold air environment; a lower panel, parallel to the upper panel, for providing a lower enclosed structure and support; a frame connecting the upper and lower panels, wherein the frame is a cross truss structure with diagonal bracing; an insulating core layer filling the space between the upper and lower panels to prevent heat transfer; and edge sealing pieces fixedly connected to the outer edges of the sandwich panel. The beams of the frame have a multi-cavity structure with multiple independent cavities inside. Reinforcing ribs are embedded between the beams to enhance load-bearing capacity. The frame is covered with an anti-corrosion coating applied to each welded area at intersection. This disclosure addresses the challenge of improving load-bearing capacity and seismic performance. Attached Figure Description

[0019] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0020] Figure 1 This is a schematic diagram of the structure of a sandwich panel for cold storage as described in this utility model;

[0021] Figure 2 This is a bottom view of a sandwich panel for cold storage as described in this utility model;

[0022] Figure 3 This is an exploded view of the interior of a sandwich panel for cold storage as described in this utility model;

[0023] Figure 4 This utility model describes a sandwich panel for cold storage. Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 This is an exploded schematic diagram showing the connection relationship between the edge sealing component and the elastic sealant in a sandwich panel for cold storage as described in this utility model.

[0025] In the diagram: 1. Upper panel; 2. Lower panel; 3. Frame structure; 31. Independent cavity; 32. Reinforcing ribs; 33. Anti-corrosion coating; 4. Thermal insulation core layer; 5. Edge sealing; 6. Connecting column; 7. Outer surface coating; 8. Supporting feet; 9. Flame-retardant filler; 10. Shock-absorbing foam; 11. Sealing groove; 12. Elastic sealant Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0027] like Figures 1-5 As shown, a sandwich panel for cold storage according to this application includes an upper panel 1, a lower panel 2, a frame 3, an insulation core layer 4, and edge sealing components 5. The following is a detailed structural description and its technical implementation scheme.

[0028] The sandwich panel features an upper panel 1, which provides a sealed top protection for the insulation core layer 4 and withstands the low-temperature requirements of refrigerated environments. From the installation position, the upper panel 1 is located at the top of the entire sandwich panel. Its surface can be designed to prevent condensation retention, and it is made of a freeze-thaw resistant metal material, such as galvanized steel or stainless steel sheet, and formed into a flat and robust surface through a mechanical pressing process, further reducing heat loss. Simultaneously, the upper panel 1 can be connected to the internal frame 3 by bonding or welding.

[0029] A lower panel 2 is installed at the bottom of the sandwich panel as a lower support structure and is arranged parallel to the upper panel 1. Its main function is to form the closed boundary on the other side and provide overall load-bearing capacity. Similar to the upper panel 1, the lower panel 2 can be made of a metal material with high toughness and good moisture resistance to ensure long-term strength stability in humid environments. For example, aluminum alloy or galvanized steel sheet with a pre-treated anti-rust coating can be selected. It can also be fixed to the frame 3 using spot welding or other efficient connection methods to make the overall structure stable.

[0030] To ensure the structural stability between the upper and lower panels 2, a unique skeleton frame 3 is embedded in the sandwich panel. This skeleton frame 3 adopts a cross-truss structure design, with its components arranged in a diagonal bracing configuration, aiming to significantly optimize stress distribution and improve overall seismic resistance. The cross-section of the skeleton frame 3 is designed as a multi-cavity structure; the presence of each independent cavity 31 not only reduces the overall weight but also contributes to enhanced thermal insulation. Each intersection point in the skeleton frame 3 is securely fixed using a precisely controlled welding process. Furthermore, to achieve length adjustment, the skeleton frame 3 employs modular splicing units, pre-customized in the factory and transported to the site for assembly, effectively reducing size limitations and providing more flexible application space.

[0031] As a crucial component for enhancing thermal insulation performance, the sandwich panel also includes an insulating core layer 4, which fills the cavity formed by the upper panel 1 and the lower panel 2, preventing the intrusion of external heat. This insulating core layer 4 is typically made of lightweight yet highly insulating foam polymer materials, such as polyurethane foam or phenolic foam. After being filled into the inner cavity through a foaming process and completely encasing the hollow portion of the frame 3, this foam forms a continuous and dense barrier upon curing, minimizing thermal bridging and ensuring that the cold storage environment maintains a low temperature over the long term.

[0032] Edge sealing element 5 is fixed to the outer edge of the sandwich panel to achieve sealing and protection between the panels. In terms of composition, edge sealing element 5 can be a composite plastic or aluminum alloy profile with a grooved structure. During installation, the edge sealing element is typically tightly fastened to the outer boundary of the upper and lower layer panels 2 using 12 strips of elastic sealant, which both isolates air exchange and resists physical impact damage. This sealing method is of significant importance in preventing moisture intrusion and improving energy efficiency.

[0033] Regarding the specific application methods and technical details of the aforementioned components, this patented sandwich panel focuses on solving the technical problems of improving load-bearing capacity and seismic performance. Firstly, the cross-truss design of the frame 3 significantly enhances the distribution efficiency of longitudinal and lateral loads. Compared to traditional single-plate structures, this diagonal bracing method greatly reduces the concentrated accumulation of vibration energy at a single point, thus giving the overall system better seismic performance. Simultaneously, the modular structure allows manufacturers to adjust the overall length on-site according to actual requirements, while the combination of the multi-cavity structure and reinforcing ribs within the frame 3 significantly increases the load-bearing capacity per square meter. Secondly, the extensive use of the anti-corrosion coating 33 and the stringent welding standards at all connection nodes lay the foundation for maintaining the frame's strength over the long term.

[0034] like Figures 3-4As shown, in one embodiment, the upper panel 1 and lower panel 2 of a sandwich panel for cold storage according to this application are fixedly connected to a frame 3 via multiple connecting posts 6. The connecting posts 6 are carefully designed to be installed at various node positions of the frame 3, typically at the intersections of the frame's transverse and longitudinal members or at load-bearing points. This effectively distributes the overall load to the critical parts of the frame 3 while ensuring a strong and reliable connection between the components. Specifically, the connecting posts 6 not only have high mechanical strength but can also further enhance installation stability through threaded engagement, embedding, or adhesive bonding, ensuring that the stability of the entire structure does not change significantly under dynamic load conditions.

[0035] To technically achieve this feature, aluminum alloy can be selected as the material for the connecting column 6, and it can be manufactured using precision molds to ensure that its shape accuracy and mechanical properties meet the requirements. Specifically, welding or snap-fit ​​assembly processes can be used to firmly anchor the connecting column 6 to the intersection area of ​​the frame 3 and connect it to the panel. This installation method allows the relative displacement between components to be controlled within a reasonable range, avoiding uneven stress, thus giving the sandwich panel a longer service life and wider applicability.

[0036] like Figures 1-3 As shown, in one embodiment, the upper panel 1 of a sandwich panel for cold storage according to this application is provided with an outer surface coating 7. This coating, applied to the outer surface of the upper panel 1 and directly exposed to the operating environment, not only provides waterproofing to prevent moisture from penetrating into the sandwich panel and affecting its thermal insulation performance and structural integrity, but also has the ability to reflect heat radiation. Specifically, this characteristic can effectively reduce the interference of external heat energy on the cold storage environment and maintain the low temperature state inside the cold storage.

[0037] The above characteristics can be achieved through reasonable selection of coating materials and process optimization. For example, fluorinated resin can be used as the base material and doped with functional fillers with high reflectivity, such as metal oxide particles, to form a coating system with excellent waterproof and heat-reflective properties. The coating can be applied to the outer surface of the upper panel 1 by spraying or roller coating, and then cured to improve the bonding strength and durability, ensuring that it can meet the long-term use requirements under complex working conditions.

[0038] like Figure 2As shown, in one embodiment, the bottom of the lower panel 2 of a sandwich panel for cold storage according to this application is provided with several support feet 8. These support feet 8 are specifically installed on the bottom surface of the lower panel 2, and their distribution can be flexibly configured according to requirements. The purpose of the support feet 8 is to adapt to various uneven or height-difference installation surfaces, thereby ensuring the overall stability and load-bearing capacity of the sandwich panel. By adjusting the height of the support feet 8, the sandwich panel can better match complex ground environments and maintain structural balance.

[0039] Specifically, the support foot 8 can be composed of an adjustable height spiral support rod and a stable base. For example, one end of the spiral support rod is connected to a fixed point at the bottom of the lower panel 2, while the other end is connected to a base with rubber pads to increase friction. Specifically, height adjustment can be achieved by rotating the support rod to change its extension length. The entire process requires no complex tools, facilitating quick leveling in practical applications. This structure also facilitates installation, maintenance, and subsequent adjustments.

[0040] like Figure 3 As shown, in one embodiment, the cross truss of the frame 3 of a sandwich panel for cold storage in this application adopts an angle-controllable design, with an angle range of 45° to 75°. This design optimizes the load-bearing capacity distribution by adjusting the angle of the cross truss and effectively reduces the risk of structural deformation caused by external pressure or temperature changes. Specifically, the cross truss is located between the upper panel 1 and the lower panel 2, ensuring the overall frame structural strength while further achieving a reasonable distribution of structural rigidity by changing the force angle of the internal support points.

[0041] Furthermore, by selecting specific angles for the intersecting trusses in the frame 3, concentrated reinforcement of critical components can be achieved. For example, when the cold storage is subjected to high external forces or large temperature differences, a larger angle of 75° can be used to improve vertical support performance; while in scenarios requiring a more even load distribution, an angle closer to 45° can be chosen. In the actual assembly process, this angle can be precisely controlled by adjusting the welding process between the internal reinforcing ribs 32 and the intersection points of the frame 3.

[0042] Specifically, the cross truss is composed of multiple metal strips, and the intersections are reinforced with welds to form a strong overall connection. At the same time, modular unit splicing is used to adapt to different specifications, thereby ensuring the stability of the entire sandwich panel under complex working conditions.

[0043] like Figure 4As shown, in one embodiment, the heat-insulating core layer 4 of a sandwich panel for cold storage according to this application is composed of multiple layers of composite materials, wherein at least one layer of composite material contains flame-retardant filler 9. This design aims to improve the fire resistance of the sandwich panel for cold storage. The flame-retardant filler 9 is uniformly distributed within specific composite material layers, which can effectively suppress flame propagation and further reduce the heat transfer efficiency through the core layer. The core layer is tightly bonded to the upper panel 1 and the lower panel 2 and is completely wrapped by the edge sealing member 5 to ensure airtightness. In addition, the multi-layer structure inside the core layer can ensure the integrity of the sandwich panel, and also works in conjunction with the multi-cavity structure of the frame 3 to disperse external forces.

[0044] Specifically, the aforementioned heat-insulating core layer 4 can be prepared by selecting appropriate composite materials. For example, flame-retardant fillers 9, such as aluminum hydroxide or magnesium hydroxide, can be added to polyurethane, modified polystyrene foam, or similar substrates to form a flame-retardant composite layer. This layer is then alternately layered with other non-flame-retardant layers with good thermal insulation properties and finally cured. During this process, the bonding between the layers is accomplished using a special adhesive, ensuring a tight bond between the entire core layer and the panel and frame 3 to avoid delamination. For example, in actual operation, a layer-by-layer pressing method can be used to ensure that the flame-retardant layer is precisely positioned on the side of the core layer closest to the external environment, so as to more effectively prevent external fire sources from damaging the interior of the sandwich panel.

[0045] like Figures 3-4 As shown, in one embodiment, the frame 3 of a sandwich panel for cold storage according to this application has multiple independent cavities 31. Specific shock-absorbing foam 10 is disposed inside each independent cavity 31 to improve the impact resistance of the entire frame 3 under complex loads. This design optimizes overall performance by placing functional filling materials in key pressure-bearing areas. Specifically, these shock-absorbing foam 10s are placed at key stress points within the multi-cavity structure, working together with other components on the cross-section to disperse external pressure or vibration. In this way, the sandwich panel can not only maintain its own stability but also adapt to complex mechanical requirements in dynamic environments.

[0046] For example, the shock-absorbing foam 10 is made of closed-cell foam material with moderate density. During installation, it is precisely die-cut to ensure a tight fit with the independent cavity 31, and then fixed using a glue-free physical embedding method, thus not affecting the original connection method and modular splicing characteristics of the frame 3. During assembly, prefabricated foam units are embedded one by one into the already welded frame 3, and combined with the anti-corrosion coating 33 process to form a complete protective system. This technique ensures good fit between components without compromising the overall structural sealing requirements.

[0047] like Figure 4As shown, in one embodiment, the frame 3 of a sandwich panel for cold storage according to this application is provided with an anti-corrosion coating 33, and the anti-corrosion coating 33 specifically covers each intersection welding area of ​​the frame 3. Specifically, the frame 3 is assembled from multiple profiles through a welding process to form a cross-truss structure. Due to the characteristics of the metal materials, the intersection welds formed during this process may be susceptible to oxidation and corrosion. To solve this problem, the anti-corrosion coating 33 is precisely applied to each intersection welding area, thereby isolating the welds from the influence of the external environment. This measure can effectively improve the reliability of the frame 3 during long-term use in humid and low-temperature environments.

[0048] Specifically, during the assembly stage of the frame 3, after each welding point is completed, the anti-corrosion coating 33 is immediately applied evenly to the welding area using spraying or brushing. For example, an epoxy resin coating with strong weather resistance and adhesion can be selected to ensure that the coating completely covers the weld surface and surrounding areas where stress concentration may occur. In addition, by strictly controlling the coating thickness and drying time, the firmness and uniformity of the bond between the anti-corrosion coating 33 and the metal surface are further guaranteed.

[0049] like Figure 5 As shown, in one embodiment, the edge sealing member 5 of a sandwich panel for cold storage of this application is provided with a sealing groove 11, and the sealing groove 11 is filled with elastic sealant 12 to improve the overall moisture-proof and heat-insulating performance. The edge sealing member 5 is located in the outer edge area of ​​the sandwich panel, which plays the role of wrapping and protecting the heat insulation core layer 4, and at the same time can block the moisture penetration path in the external environment. The edge sealing member 5 is mechanically fixed to the end between the upper panel 1 and the lower panel 2, and ensures that it is tightly combined with the edge part of the frame 3 to prevent local stress concentration caused by structural deformation.

[0050] Specifically, the sealing groove 11 is located on the inner side of the edge sealing member 5, forming a continuous annular structure to conform to the outer shape of the sandwich panel, thereby creating a closed sealing space. The elastic sealant 12 filling it can adjust its shape according to changes in thermal expansion and contraction, maintaining long-term airtightness and watertightness. For example, during assembly, the edge sealing member 5 is first fixed to the sandwich panel, and then a certain amount of premixed elastic sealant 12 is injected into the sealing groove 11 using an injection device to ensure that it is evenly filled and fully covers the gaps.

[0051] In actual operation, when this device is in use, the upper panel 1 and the lower panel 2 form a closed thermal insulation structure space. The frame 3 is located between the two and the overall force is distributed through the cross truss structure. The overall seismic performance is improved by the diagonal bracing. At the same time, the multi-cavity frame 3 has independent cavities 31 and embedded reinforcing ribs 32 to enhance the load-bearing capacity. The thermal insulation core layer 4 fills the area between the upper and lower panels 2 to effectively prevent heat transfer and maintain the internal temperature environment of the cold storage. The external edge sealing piece 5 firmly seals the edge area of ​​the entire sandwich panel and provides protection against external impacts. The anti-corrosion coating 33 covers the outer surface of the frame 3 to prevent it from being corroded by environmental factors during long-term use. Each modular unit is spliced ​​to form a sandwich panel of complete length and ensures structural stability, so that the entire device meets the thermal insulation and mechanical requirements of cold storage.

[0052] The specific embodiments described above further illustrate the purpose, technical solutions, and beneficial effects of the embodiments of this disclosure. It should be understood that the above descriptions are merely specific embodiments of the embodiments of this disclosure and are not intended to limit the scope of protection of the embodiments of this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this disclosure should be included within the scope of protection of the embodiments of this disclosure.

Claims

1. A sandwich panel for cold stores, c h a r a c t e r i s e d in that The utility model relates to a kind of sandwich panels, including: Upper panel (1) is used to provide upper closed structure and the role of carrying cold air environment; Lower panel (2) is arranged in parallel with the upper panel (1), and is used to provide lower closed structure and support; Skeleton frame (3) is connected between the upper panel (1) and the lower panel (2), wherein the skeleton frame (3) is cross truss structure, and is provided with diagonal bracing; Thermal insulation core (4) is filled between the upper panel (1) and the lower panel (2), for preventing heat transfer; Edge sealing element (5) is fixedly connected to the outside edge of sandwich panel; The beam of the skeleton frame (3) is a multi-cavity structure, and a plurality of independent cavities (31) are arranged in the beam, and reinforcing ribs (32) are embedded between the beams of the skeleton frame (3) to enhance the load-bearing capacity, and the skeleton frame (3) is covered with a corrosion-resistant coating (33), and the corrosion-resistant coating (33) is coated on each intersection welding area of the skeleton frame (3).

2. The sandwich panel for cold stores according to claim 1, characterized in that: The upper panel (1) and the lower panel (2) are fixedly connected to the skeleton frame (3) by a plurality of connecting columns (6), and the connecting columns (6) are distributed at the node positions of the skeleton frame (3).

3. The sandwich panel for cold storage according to claim 1, characterized in that: The upper panel (1) includes an outer surface coating (7) that can prevent water and reflect heat radiation.

4. The sandwich panel for cold storage rooms according to claim 1, characterized in that: The lower panel (2) is provided with a plurality of support feet (8) at the bottom, and the support feet (8) can adjust the height to adapt to different flatness of installation plane.

5. The sandwich panel for cold storage rooms according to claim 1, characterized in that: The angle of the cross truss in the skeleton frame (3) ranges from 45° to 75° to adjust the load distribution and reduce the risk of structural deformation.

6. The sandwich panel for cold storage rooms according to claim 1, characterized in that: The thermal insulation core (4) is composed of multiple layers of composite materials, at least one of which contains fire-retardant filler (9) to improve fireproof performance.

7. The sandwich panel for cold stores according to claim 1, characterized in that: The independent cavities (31) are filled with shock-absorbing foam (10) to enhance the anti-seismic performance of the skeleton frame (3) under dynamic load.

8. The sandwich panel for cold storage rooms according to claim 1, characterized in that: The edge sealing element (5) is provided with a sealing groove (11) filled with elastic sealant (12) to improve moisture-proof and thermal insulation effect.

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