Composite sandwich board with energy storage function
By using rock wool and phase change material layers in composite sandwich panels in cold storage, combined with internal support strips and partition layer structures, the problems of temperature fluctuation and construction complexity in cold storage are solved, achieving temperature uniformity and ease of construction within the cold storage, extending the life of refrigeration equipment and reducing energy consumption.
Patent Information
- Application Number
- CN202520427631.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-12
AI Technical Summary
In existing cold storage facilities, polyurethane sandwich panels are susceptible to environmental influences, leading to large temperature fluctuations, which can damage goods and shorten the lifespan of refrigeration equipment. Furthermore, traditional phase change material devices are complex to install and lack comprehensive coverage.
A composite sandwich panel is designed, comprising a rock wool layer and a phase change material layer. Through internal support bars and partition layer structure, the phase change material is fully covered by piston plates and one-way valves. Combined with hoisting equipment construction, the material is ensured to be evenly distributed.
It achieves uniform temperature within the cold storage, reduces the thickness and amount of rock wool boards used, simplifies the construction process, protects the low-temperature environment, extends the lifespan of refrigeration equipment, and reduces energy consumption.
Smart Images
Figure CN223890582U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermal insulation materials technology, and in particular to a composite sandwich panel with energy storage function. Background Technology
[0002] For large-scale cold chain logistics, polyurethane sandwich panels are mostly used as the insulation material for the enclosure system of cold storage facilities. However, as a building envelope, polyurethane sandwich panels alone are greatly affected by the environment and solar radiation. Therefore, large temperature fluctuations can easily occur inside the cold storage, leading to damage to goods with strict temperature control requirements. At the same time, frequent start-ups of refrigeration equipment significantly reduce the lifespan of the refrigeration equipment and increase energy consumption.
[0003] Traditional cold storage thermal storage methods involve adding bulk-filled phase change materials (PCMs) inside the cold storage facility, utilizing the phase change process of the PCMs to store and release energy. PCM devices designed in this way typically need to be added after the cold storage is installed, and they must be placed on top of the shelving, requiring secondary work at height, which impacts the construction period and increases the workload. Since modern logistics cold storage facilities are generally quite large, bulk-filled PCMs can only operate in localized areas, with significant temperature fluctuations remaining in areas farther from the PCMs. An ideal technical solution would be to completely fill all spaces within the cold storage with PCMs to address the issue of uneven temperature distribution. Therefore, we propose a composite sandwich panel with energy storage capabilities to solve these problems. Utility Model Content
[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a composite sandwich panel with energy storage function.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A composite sandwich panel with energy storage function includes an outer sandwich panel, and a composite core assembly is disposed inside the outer sandwich panel.
[0007] The composite core assembly includes a rock wool layer disposed inside the outer clamping plate, and the inner cavity of the rock wool layer is filled with a phase change material layer.
[0008] An inner support strip is provided between the rock wool layer and the outer clamping plate, and an edge banding is also provided between the outer clamping plates. The edge banding wraps around the rock wool layer. A partition layer is provided between the inner support strip and the outer clamping plate, and the phase change material layer is located inside the partition layer.
[0009] A partition plate is fixedly connected inside the partition layer, and a piston plate is slidably connected inside the partition layer. A connecting pipe is provided on the side of the partition layer near the piston plate, and a one-way valve is provided inside the connecting pipe. A reinforcing plate is provided on the side of the partition plate away from the connecting pipe, and an exhaust port is also provided on the side of the partition layer away from the piston plate.
[0010] Preferably, a plurality of limiting rods are fixedly connected to one end of the piston plate near the connecting pipe, and the connecting pipe is located inside the partition layer.
[0011] Preferably, both the partition layer and the partition plate are made of low-temperature resistant polyethylene, and the hardness of the partition plate is less than that of the partition layer.
[0012] Preferably, the piston plate has a groove on the side away from the partition layer, and the partition plate has a clearance opening on the side near the groove.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This utility model, by setting up a composite core assembly, uses a rock wool layer in combination with a phase change material layer, which significantly reduces the thickness and amount of rock wool board used while maintaining the same heat preservation effect, and fully covers the edge area of the cold storage, effectively protecting the low temperature environment inside the cold storage.
[0015] 2. In this utility model, by setting a partition plate in conjunction with a piston plate, a partition space can be formed between the phase change material and the rock wool layer. By setting a limiting rod, it can be prevented that the piston plate will shift when the phase change material is poured in, causing the phase change material to enter the side of the partition plate close to the rock wool layer. Attached Figure Description
[0016] Figure 1 This is a top view of a composite sandwich panel with energy storage function proposed in this utility model.
[0017] Figure 2 This is a top-section structural diagram of a composite sandwich panel with energy storage function proposed in this utility model.
[0018] Figure 3 This is a schematic diagram of the internal structure of a composite sandwich panel with energy storage function proposed in this utility model.
[0019] Figure 4 This is a cross-sectional view of a composite sandwich panel with energy storage function proposed in this utility model.
[0020] Figure 5 This is a side cross-sectional view of the partition layer of a composite sandwich panel with energy storage function proposed in this utility model.
[0021] In the diagram: 1. Outer clamping plate; 2. Rock wool layer; 3. Inner support strip; 4. Partition layer; 5. Partition plate; 6. Piston plate; 7. Connecting pipe; 8. One-way valve; 9. Reinforcing plate; 10. Exhaust port; 11. Limiting rod; 12. Edge banding; 13. Clearance opening. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] Example 1
[0024] Reference Figures 1-5 A composite sandwich panel with energy storage function includes an outer sandwich panel 1, wherein a composite core assembly is disposed inside the outer sandwich panel 1;
[0025] The composite core assembly includes a rock wool layer 2 located inside the outer clamping plate 1. The rock wool layer 2 is filled with a phase change material layer. The phase change material layer is an inorganic salt phase change material available on the market, which is filled into the rock wool layer 2 to form the phase change material layer.
[0026] In this design, during construction, the user uses hoisting equipment to splice the composite sandwich panels, then erects a fixed support frame to secure the panels. Before installing the ceiling, a high-pressure grouting machine is used to inject phase change material into the rock wool layer 2 of the composite sandwich panels. Finally, the upper edge of the composite sandwich panels is sealed. This design uses phase change material to fill the rock wool layer, achieving a combination of insulation and energy storage. This prevents the cold energy stored in the phase change material from being lost, while also facilitating construction and preventing uneven temperature distribution within the cold storage.
[0027] Example 2
[0028] Based on Example 1, an inner support strip 3 is provided between the rock wool layer 2 and the outer sandwich panel 1. The inner support strip 3 can improve the physical strength of the composite sandwich panel. An edge banding 12 is also provided between the outer sandwich panels 1, and the edge banding 12 wraps around the rock wool layer 2.
[0029] The edge banding 12 is used to ensure that the phase change material does not seep out or leak. It should be noted that the splicing of two adjacent composite sandwich panels can also be set at the edge banding 12 on both sides of the outer sandwich panel 1.
[0030] A partition layer 4 is provided between the inner support strip 3 and the outer clamping plate 1. The partition layer 4 has an inner cavity. A partition plate 5 is fixedly connected inside the partition layer 4, and a piston plate 6 is slidably connected inside the partition layer 4. A connecting pipe 7 is provided on the side of the partition layer 4 near the piston plate 6. A one-way valve 8 is provided inside the connecting pipe 7. A reinforcing plate 9 is provided on the end of the partition plate 5 away from the connecting pipe 7. An exhaust port 10 is also provided on the side of the partition layer 4 away from the piston plate 6.
[0031] Unlike Embodiment 1, in this design, during construction, the user uses hoisting equipment to assemble the composite sandwich panels and then builds a fixed support frame to secure them. Before installing the ceiling, phase change material is injected into the partition layer 4 through the connecting pipe 7. At this time, the phase change material drives the piston plate 6 downward, squeezing the air below the piston plate 6 to the other side of the partition 5 and expelling it through the exhaust port 10. This allows for relatively easy injection of phase change material into the partition layer 4 until the piston plate 6 moves close to the reinforcing plate 9. This design not only facilitates construction and avoids the construction risks caused by the excessive weight of the composite sandwich panels, but also avoids damage to the partition layer 4 and the risk of phase change material leakage during construction. Injecting the phase change material after the composite sandwich panels are assembled ensures that the phase change material fully covers the edge area of the cold storage, effectively ensuring that the cold storage maintains a low-temperature environment.
[0032] Furthermore, a plurality of limiting rods 11 are fixedly connected to one end of the piston plate 6 near the connecting pipe 7, and the limiting rods 11 are abutted against the inner wall of the partition layer 4 and the partition plate 5, and the connecting pipe 7 is located inside the partition layer 4.
[0033] In this configuration, the cross-section of the cold storage shell is semi-circular. Since the piston plate 6 moves a long distance and the internal shape of the cold storage shell is irregular, a limiting rod 11 is provided to ensure that the piston plate 6 does not tilt during movement.
[0034] Furthermore, both the partition layer 4 and the partition plate 5 are made of low-temperature resistant polyethylene, and the hardness of the partition plate 5 is less than that of the partition layer 4.
[0035] In this design, the low-temperature resistant polyethylene material will not become brittle in low-temperature environments and will maintain its elasticity. The hardness of the partition 5 is less than that of the partition layer 4. After the phase change material undergoes a phase change, the deformation of the partition 5 ensures that the phase change material in the partition layer 4 will not leak. It should be noted that after the phase change material is injected into the partition layer 4, the piston plate 6 moves to the reinforcing plate 9. The reinforcing plate 9, together with the piston plate 6, can prevent the phase change material from leaking out from this point.
[0036] Furthermore, the piston plate 6 has a groove on the side away from the partition layer 4, and the partition plate 5 has a relief opening 13 on the side near the groove. The groove and relief opening 13 are provided to exhaust gas to the other side of the partition plate 5 when injecting phase change material into the partition layer 4. After the phase change material is injected, the connecting pipe 7 and the exhaust port 10 are sealed.
[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A composite sandwich panel with energy storage function, comprising an outer sandwich panel (1), characterized in that, The outer clamping plate (1) is provided with a composite core assembly; The composite core assembly includes a rock wool layer (2) disposed inside the outer clamping plate (1), and the inner cavity of the rock wool layer (2) is filled with a phase change material layer; An inner support strip (3) is provided between the rock wool layer (2) and the outer clamping plate (1), and an edge band (12) is also provided between the outer clamping plates (1). The edge band (12) wraps around the rock wool layer (2). A partition layer (4) is provided between the inner support strip (3) and the outer clamping plate (1), and the phase change material layer is provided inside the partition layer (4). A partition plate (5) is fixedly connected inside the partition layer (4), and a piston plate (6) is slidably connected inside the partition layer (4). A connecting pipe (7) is provided on the side of the partition layer (4) close to the piston plate (6). A one-way valve (8) is provided inside the connecting pipe (7). A reinforcing plate (9) is provided on the end of the partition plate (5) away from the connecting pipe (7). An exhaust port (10) is also provided on the side of the partition layer (4) away from the piston plate (6).
2. A composite sandwich panel with energy storage function according to claim 1, characterized in that, The piston plate (6) is fixedly connected to a plurality of limiting rods (11) at one end near the connecting pipe (7), and the connecting pipe (7) is located inside the partition layer (4).
3. A composite sandwich panel with energy storage function according to claim 1, characterized in that, Both the partition layer (4) and the partition plate (5) are made of low-temperature resistant polyethylene material, and the hardness of the partition plate (5) is less than that of the partition layer (4).
4. A composite sandwich panel with energy storage function according to claim 1, characterized in that, The piston plate (6) has a groove on the side away from the partition layer (4), and the partition plate (5) has a clearance opening (13) on the side near the groove.