Flat plate type solar structure
By introducing heat storage phase change materials and heat-conducting fin structures into flat-plate solar collectors, the heat conduction path is optimized, solving the problem of low heat storage density in traditional flat-plate solar collectors. This achieves efficient heat storage and release, improving energy utilization and the sustainability of heating.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional flat-plate solar collectors have low sensible heat storage density, which leads to heating interruptions at night or on cloudy or rainy days, making it impossible to meet the needs of continuous use.
By employing heat-storing phase change materials and heat-conducting fin structures within the heat storage shell, combined with heat-absorbing coatings, tempered glass plates, and fluid tube bundles, efficient heat storage and release are achieved. By leveraging the latent heat characteristics of the phase change materials during the solid-liquid phase change process, the heat conduction path is optimized, and a distributed heat conduction network is constructed.
It achieves efficient storage and release of solar energy, avoids sudden drops in the temperature of the heat transfer medium, improves energy utilization, and extends the continuity of heat supply.
Smart Images
Figure CN224121412U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a flat-plate solar energy structure. Background Technology
[0002] As one of the core areas of clean energy utilization, the key challenge of solar thermal technology lies in how to efficiently collect, store, and sustainably utilize solar energy. Traditional flat-plate solar collectors typically consist of an absorber plate, fluid pipes, and an insulation layer.
[0003] Traditional structures often rely on sensible heat storage (such as water tank heat storage), which has low heat storage density, leading to heating interruptions at night or on cloudy or rainy days, and failing to meet the needs of continuous use. In view of this, this utility model proposes a flat-plate solar energy structure to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a flat-plate solar energy structure to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A flat-plate solar energy structure includes a housing, a placement plate provided on the housing, a heat-absorbing coating on the surface of the placement plate, and a tempered glass plate on the surface of the housing.
[0007] The placement plate is provided with a fluid tube bundle, the bottom end of the placement shell is provided with a heat storage shell, the placement shell is provided with an installation cavity, the heat storage shell is adapted to the installation cavity, and the heat storage shell is placed in the installation cavity so that heat is transferred to the heat storage shell for storage.
[0008] As an improvement to the above technical solution, the heat storage shell is provided with a heat storage cavity, and the heat storage cavity is provided with a heat storage phase change material.
[0009] As an improvement to the above technical solution, a heat-conducting plate is provided on the heat storage shell, and the heat-conducting plate is disposed in the inner cavity of the mounting cavity.
[0010] As an improvement to the above technical solution, multiple sets of heat-conducting grooves are evenly formed on the heat-conducting plate, and the heat-conducting grooves are connected to the heat storage cavity.
[0011] As an improvement to the above technical solution, multiple sets of heat-conducting fins are evenly arranged at the bottom of the placement plate. The multiple sets of heat-conducting fins are adapted to multiple sets of heat-conducting grooves, and the heat-conducting fins extend into the heat storage cavity through the heat-conducting grooves.
[0012] As an improvement to the above technical solution, a connecting groove is provided on the heat-conducting plate, and a sealing plate is provided at the connecting groove. The sealing plate is connected to the heat-conducting plate by bolts.
[0013] As an improvement to the above technical solution, a placement loop-shaped connecting plate is fixedly provided on the bottom end face of the placement shell, and a heat storage loop-shaped connecting plate is fixedly provided on the heat storage shell, and the heat storage loop-shaped connecting plate is adapted to the placement loop-shaped connecting plate.
[0014] The placement loop-shaped connecting plate is evenly provided with multiple sets of first connecting holes, and the heat storage loop-shaped connecting plate is evenly provided with multiple sets of second connecting holes. The multiple sets of first connecting holes and multiple sets of second connecting holes are matched in position, and the first connecting holes and second connecting holes are connected by bolts.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] Through the synergistic effect of the heat-absorbing coating, tempered glass plate, and fluid tube bundle, the heat-absorbing coating efficiently converts light energy into heat energy. The circulating medium in the fluid tube bundle absorbs heat in real time and transports it to the external system (such as a water storage tank or heating). At the same time, the heat storage shell stores excess heat when there is sufficient sunlight and releases heat to the placement plate when there is insufficient sunlight, continuously replenishing the heat to the fluid tube bundle. This achieves a dynamic balance between the system's heat energy supply and demand, avoids a sudden drop in the temperature of the heat transfer medium, improves energy utilization, and significantly extends the continuity of heat energy supply. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram showing the positions of the housing and the placement plate in this utility model;
[0019] Figure 3 This is a schematic diagram of the exploded structure of this utility model;
[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;
[0021] Figure 5 This utility model Figure 3 Enlarged structural diagram at point B;
[0022] Figure 6 This is a schematic diagram of the exploded structure of this utility model from another angle;
[0023] Figure 7 This utility model Figure 6 Enlarged structural diagram at point C;
[0024] Figure 8 This is a side view of the housing of this utility model;
[0025] Figure 9 This utility model Figure 8 Sectional view of DD;
[0026] Figure 10 This utility model Figure 9 A magnified structural diagram at point E in the middle.
[0027] In the diagram: 10. Housing placement; 11. Recurved connecting plate placement; 12. Mounting cavity; 13. First connecting hole; 20. Tempered glass plate; 30. Placement plate; 31. Heat-conducting fins; 40. Fluid tube bundle; 50. Heat storage housing; 51. Heat-conducting plate; 52. Heat-conducting groove; 53. Connecting through groove; 54. Sealing plate; 55. Heat storage recurved connecting plate; 56. Second connecting hole; 57. Heat storage cavity. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Example:
[0030] like Figures 1-10 As shown, this embodiment proposes a flat-plate solar energy structure, including a housing 10, a placement plate 30 provided on the housing 10, a heat-absorbing coating on the surface of the placement plate 30, and a tempered glass plate 20 on the surface of the housing 10.
[0031] The placement plate 30 is provided with a fluid tube bundle 40, and the bottom end of the placement shell 10 is provided with a heat storage shell 50. The placement shell 10 is provided with an installation cavity 12. The heat storage shell 50 is adapted to the installation cavity 12. The heat storage shell 50 is placed in the installation cavity 12 so that heat is transferred to the heat storage shell 50 for storage.
[0032] In this case, the heat-absorbing coating includes, but is not limited to, black chrome coating, black nickel coating, and cermet coating.
[0033] In this embodiment, when the flat-plate solar structure is used, the heat storage shell 50 is placed in the mounting cavity 12 and fixed. Then, the tempered glass plate 20 is fixed on the surface of the placement shell 10, so that the light shines on the heat-absorbing coating. The heat-absorbing coating converts light energy into heat energy, causing the temperature of the placement plate 30 to rise rapidly. The circulating heat transfer medium (such as water or antifreeze) in the fluid tube bundle 40 distributed on the placement plate 30 absorbs the heat of the placement plate 30 and is then transported to the external heat exchange system (such as heating or water storage tank) through pipes. Of course, when there is sufficient light, the heat-absorbing coating continues to absorb heat, and the medium in the fluid tube bundle 40 circulates and outputs heat energy for immediate use (such as domestic hot water). Excess heat is stored in the heat storage shell 50. When there is insufficient light, the heat storage shell 50 releases the stored heat and transfers it to the placement plate 30 to maintain the temperature of the medium in the fluid tube bundle 40.
[0034] Through the synergistic effect of the heat-absorbing coating, tempered glass plate 20, and fluid tube bundle 40, the heat-absorbing coating efficiently converts light energy into heat energy. The circulating medium inside the fluid tube bundle 40 absorbs heat in real time and transports it to external systems such as water storage tanks or heating systems. At the same time, the heat storage shell 50 stores excess heat when there is sufficient sunlight and releases heat to the placement plate 30 when there is insufficient sunlight, continuously replenishing heat to the fluid tube bundle 40. This achieves a dynamic balance between the system's heat energy supply and demand, avoids a sudden drop in the temperature of the heat transfer medium, improves energy utilization, and significantly extends the continuity of heat energy supply.
[0035] Specifically, the heat storage shell 50 is provided with a heat storage cavity 57, and the heat storage cavity 57 is provided with a heat storage phase change material.
[0036] In this case, the preferred thermal storage phase change material is paraffin-based or composite phase change material such as paraffin / expanded graphite, which balances thermal storage density and thermal conductivity.
[0037] In this embodiment, by filling the heat storage cavity 57 with heat storage phase change material, the latent heat characteristics of the phase change material in the solid-liquid phase change process are utilized to significantly improve the heat storage density per unit volume, thereby achieving efficient storage of redundant heat during the photothermal conversion process. When there is insufficient light, the phase change material releases latent heat in the reverse direction, continuously transferring heat to the placement plate 30 and the fluid tube bundle 40, effectively extending the heat supply time and avoiding a sudden drop in the temperature of the heat transfer medium.
[0038] Specifically, a heat-conducting plate 51 is provided on the heat storage shell 50, and the heat-conducting plate 51 is disposed in the inner cavity of the mounting cavity 12.
[0039] Specifically, multiple sets of heat-conducting grooves 52 are evenly formed on the heat-conducting plate 51, and the heat-conducting grooves 52 are connected to the heat storage cavity 57.
[0040] Specifically, the bottom end of the placement plate 30 is uniformly provided with multiple sets of heat-conducting fins 31, which are adapted to multiple sets of heat-conducting grooves 52. The heat-conducting fins 31 extend into the heat storage cavity 57 through the heat-conducting grooves 52.
[0041] In this embodiment, multiple sets of heat-conducting grooves 52 are evenly opened on the heat-conducting plate 51, and a vertical plug-in structure is formed with multiple sets of heat-conducting fins 31 at the bottom of the placement plate 30 to build a distributed heat conduction network. When there is sufficient light, the heat absorbed by the placement plate 30 directly penetrates the heat-conducting grooves 52 through the heat-conducting fins 31 and enters the heat storage cavity 57, maximizing the contact area with the phase change material, shortening the heat conduction path, and reducing the interface thermal resistance.
[0042] After the phase change material in the heat storage cavity 57 melts and absorbs heat, the heat is quickly diffused to the entire heat storage shell 50 through the contact surface between the side wall of the heat conduction groove 52 and the heat conduction plate 51, thus avoiding local temperature accumulation.
[0043] The depth of the heat-conducting fins 31 extending into the heat storage cavity 57 is matched with the filling height of the phase change material, ensuring that the phase change material can fully contact the fins during solid / liquid changes, thereby improving the latent heat exchange efficiency.
[0044] By optimizing the heat conduction path, regulating bidirectional heat flow, and strengthening the modular interface, the thermal energy storage / release efficiency and environmental adaptability of flat-plate solar energy structures are significantly improved, solving the problem of thermal energy storage performance degradation caused by excessive thermal resistance and uneven thermal field in traditional equipment.
[0045] Specifically, the heat-conducting plate 51 has a connecting groove 53, and a sealing plate 54 is provided at the connecting groove 53. The sealing plate 54 is connected to the heat-conducting plate 51 by bolts.
[0046] In this embodiment, the heat storage phase change material can be easily introduced into the housing 10 by connecting the through slot 53.
[0047] Specifically, a placement loop-shaped connecting plate 11 is fixedly provided on the bottom end face of the placement shell 10, and a heat storage loop-shaped connecting plate 55 is fixedly provided on the heat storage shell 50. The heat storage loop-shaped connecting plate 55 is adapted to the placement loop-shaped connecting plate 11.
[0048] The placement ring-shaped connecting plate 11 has multiple sets of first connecting holes 13 evenly provided, and the heat storage ring-shaped connecting plate 55 has multiple sets of second connecting holes 56 evenly provided. The multiple sets of first connecting holes 13 and multiple sets of second connecting holes 56 are matched in position, and the first connecting holes 13 and the second connecting holes 56 are connected by bolts.
[0049] In this embodiment, by adapting the placement of the U-shaped connecting plate 11 and the heat storage U-shaped connecting plate 55, and combining the bolt connection structure of multiple sets of first connecting holes 13 and second connecting holes 56, the heat storage shell 50 and the placement shell 10 are quickly positioned and rigidly fixed.
[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A flat-plate solar energy structure, characterized in that: It includes a housing (10), the housing (10) is provided with a placement plate (30), the surface of the placement plate (30) is provided with a heat-absorbing coating, and the surface of the housing (10) is provided with a tempered glass plate (20). The placement plate (30) is provided with a fluid tube bundle (40), and the bottom end of the placement shell (10) is provided with a heat storage shell (50). The placement shell (10) is provided with an installation cavity (12). The heat storage shell (50) is adapted to the installation cavity (12). The heat storage shell (50) is placed in the installation cavity (12) so that heat is transferred to the heat storage shell (50) for storage.
2. The flat-plate solar energy structure according to claim 1, characterized in that: The heat storage shell (50) is provided with a heat storage cavity (57), and the heat storage cavity (57) is provided with a heat storage phase change material.
3. A flat-plate solar energy structure according to claim 1, characterized in that: A heat-conducting plate (51) is provided on the heat storage shell (50), and the heat-conducting plate (51) is provided in the inner cavity of the mounting cavity (12).
4. A flat-plate solar energy structure according to claim 3, characterized in that: Multiple sets of heat-conducting grooves (52) are evenly opened on the heat-conducting plate (51), and the heat-conducting grooves (52) are connected to the heat storage cavity (57).
5. A flat-plate solar energy structure according to claim 4, characterized in that: The bottom end of the placement plate (30) is uniformly provided with multiple sets of heat-conducting fins (31), and the multiple sets of heat-conducting fins (31) are adapted to multiple sets of heat-conducting grooves (52). The heat-conducting fins (31) extend into the heat storage cavity (57) through the heat-conducting grooves (52).
6. A flat-plate solar energy structure according to claim 3, characterized in that: The heat-conducting plate (51) has a connecting groove (53), and a sealing plate (54) is provided at the connecting groove (53). The sealing plate (54) is connected to the heat-conducting plate (51) by bolts.
7. A flat-plate solar energy structure according to claim 1, characterized in that: The bottom end face of the placement shell (10) is fixedly provided with a placement loop-shaped connecting plate (11), and the heat storage shell (50) is fixedly provided with a heat storage loop-shaped connecting plate (55). The heat storage loop-shaped connecting plate (55) is adapted to the placement loop-shaped connecting plate (11). The placement loop-shaped connecting plate (11) has multiple sets of first connecting holes (13) evenly provided, and the heat storage loop-shaped connecting plate (55) has multiple sets of second connecting holes (56) evenly provided. The multiple sets of first connecting holes (13) and multiple sets of second connecting holes (56) are matched in position, and the first connecting holes (13) and the second connecting holes (56) are connected by bolts.