A reflective heat-insulating photovoltaic building facade
By setting up rotating heat insulation sheets in the facade of the photovoltaic building, the driving source is used to control the rotation of the heat insulation sheets, forming a heat insulation layer in summer and forming a channel in winter, the problem of low heat utilization efficiency of the photovoltaic building facade in different seasons is solved, and better heat management and energy utilization are achieved.
Patent Information
- Application Number
- CN202310248140.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-03-15
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2043-03-15
AI Technical Summary
In summer, the photovoltaic building facade produces high temperatures after photovoltaic modules absorb solar energy, which leads to an increase in the indoor temperature of the building and an increase in the air conditioning load; in winter, the heat of the photovoltaic modules is difficult to transfer to the building facade, resulting in a large load on the air conditioning indoors.
The reflective insulated photovoltaic building facade is adopted. By setting rotating heat insulation sheets in the frame and using a driving source to drive the heat insulation sheets to rotate, a heat insulation layer is formed in summer to block heat, and a channel is formed in winter to transfer heat to the wall.
In summer, the heat transfer of photovoltaic modules to the walls is effectively reduced and the load of air conditioning is reduced. In winter, the heat transfer of photovoltaic modules to the walls is increased, and the indoor temperature of the building is increased, so as to better utilize the heat source of photovoltaic modules.
Smart Images
Figure CN116201249B_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of building facades, and particularly to a reflective heat-insulating photovoltaic building facade. Background Art
[0002] With the popularization and development of current energy reuse, photovoltaic modules are installed on building facades, and the combination of photovoltaic buildings and building facades forms a photovoltaic building facade. The photovoltaic modules can absorb solar energy and convert it into electrical energy, thereby realizing the reuse of energy, and it is currently being gradually popularized.
[0003] In a photovoltaic building facade, a frame is usually installed on the building facade, and then the photovoltaic modules are installed on the frame. In normal use, although the photovoltaic modules can convert solar energy, after being irradiated by sunlight in summer, certain temperature energy will be transferred to the building wall, which makes the temperature inside the building easy to rise and increases the load on the air conditioner; and if a heat-emitting and heat-insulating coating is directly applied to the surface of the building facade, in winter, it is difficult for the temperature of the photovoltaic modules to be transferred to the building facade, so the load of turning on the air conditioner indoors in winter is also relatively large. Summary of the Invention
[0004] In order to improve the utilization rate of the heat of the photovoltaic modules, the present application provides a reflective heat-insulating photovoltaic building facade.
[0005] The present application adopts the following technical solutions:
[0006] A reflective heat-insulating photovoltaic building facade includes a wall, a frame arranged on the wall, photovoltaic modules arranged on the frame, and a heat-insulating component arranged in the frame; the heat-insulating component includes a plurality of heat-insulating sheets rotatably arranged in the frame, and a driving source for driving the rotation of the heat-insulating sheets; the heat-insulating sheets are spaced apart in the vertical direction, and under the drive of the driving source, the rotation directions of the adjacent upper and lower heat-insulating sheets are opposite. When the lower end of the heat-insulating sheet rotates to abut against the adjacent lower heat-insulating sheet, all the heat-insulating sheets form a heat-insulating layer in the frame; when the heat-insulating sheets rotate to be separated from each other, the space between the adjacent heat-insulating sheets forms a channel for heat to pass through.
[0007] By adopting the above technical solutions, under the action of the driving source, the heat-insulating sheets can rotate. In summer, the heat-insulating sheets can rotate to form a heat-insulating layer, thereby blocking the heat in the frame and reducing the direct transfer of the temperature on the photovoltaic modules to the wall; in winter, by driving the heat-insulating sheets to rotate through the driving source, a channel is formed between the heat-insulating sheets, and the heat generated on the photovoltaic modules can be transferred to the wall, thereby increasing the temperature of the wall. Therefore, the heat source of the photovoltaic modules can be better utilized.
[0008] Optionally, an extension plate is inclined at the lower end of the heat insulation sheet. When the heat insulation sheet rotates to form a heat insulation layer, the extension plate can abut against the side wall of an adjacent heat insulation sheet.
[0009] By adopting the above technical solution, the extension plate abuts against the adjacent lower heat insulation sheet. In the heat insulation state, it can reduce the heat entering the cavity on the side close to the wall, improving the heat insulation effect.
[0010] Optionally, an arc-shaped sheet is rotatably arranged on the heat insulation sheet, and a trigger sheet is arranged on the arc-shaped sheet. When the heat insulation sheet rotates to form a heat insulation layer, the trigger sheet can be pressed by the extension plate, causing the arc-shaped sheet to rotate upward, and the end of the arc-shaped sheet can abut against the side wall of the adjacent upper extension plate.
[0011] By adopting the above technical solution, the arc-shaped sheet abuts against the adjacent upper extension plate, which can further reduce the heat flowing through the gap between the heat insulation sheets, thereby improving the heat insulation effect.
[0012] Optionally, an installation cavity is formed on the heat insulation sheet, and a rotating shaft is rotatably arranged in the installation cavity. The arc-shaped sheet and the trigger sheet are connected to the rotating shaft.
[0013] Optionally, a first opening and a second opening are arranged on the frame, and a first cover plate for opening and closing the first opening and a second cover plate for opening and closing the second opening are arranged on the frame. When the heat insulation sheets form a heat insulation layer, the first opening and the second opening are in an open state. When the heat insulation sheets are staggered from each other, the first opening and the second opening are in a closed state.
[0014] By adopting the above technical solution, when the heat insulation sheets are in the heat insulation state, the first opening and the second opening are in an open state, so that the heat in the frame can flow from the first opening and the second opening, thereby reducing the heat in the frame.
[0015] Optionally, the first opening is arranged at the upper end of the frame, the second opening is arranged at the lower end of the frame, the first cover plate is hinged to the frame, and a torsion spring is arranged between the first cover plate and the frame, so that the first cover plate can cover the first opening; the second cover plate is slidably arranged on the lower bottom surface of the frame, and a spring is arranged between the second cover plate and the wall. Under the action of the spring, the second cover plate covers the second opening; a connecting line is connected between the second cover plate and the first cover plate. When the heat insulation sheet rotates to form a heat insulation layer, the lowermost heat insulation sheet can push the second cover plate to slide to open the second opening, and through the connecting line, the first cover plate is rotated to open the first opening.
[0016] By adopting the above technical solution, when the second cover plate is pressed against the lowermost heat insulation sheet and slides, the second opening is opened, and the first cover plate can also be pulled by the connecting line to open the first opening, so as to open the first opening and the second opening simultaneously.
[0017] Optionally, the first opening is formed at the upper end of the frame, the second opening is formed at the lower end of the frame, the first cover plate is hinged to the frame, and a torsion spring is arranged between the first cover plate and the frame, so that the first cover plate can cover the first opening; the second cover plate is slidably arranged on the bottom surface of the frame, a spring is arranged between the second cover plate and the wall body, and under the action of the spring, the second cover plate covers the second opening; a connecting line is connected between the second cover plate and the first cover plate. When the heat insulation sheet rotates to the state of forming a heat insulation layer, the lowermost heat insulation sheet can push the second cover plate to slide to open the second opening, and the first cover plate is rotated to open the first opening through the connecting line.
[0018] By adopting the above technical solution, the heat insulation effect of the heat insulation sheet is improved.
[0019] Optionally, connecting columns are arranged at both ends of the heat insulation sheet, the connecting columns are rotatably connected to the frame, and one of the connecting columns at one end penetrates through the side wall of the frame and is coaxially provided with a gear; the driving source includes a rack installed on the side wall of the frame and a power member for driving the rack to move up and down; the gears are alternately distributed on both sides of the rack from top to bottom, and the gears can mesh with the rack.
[0020] By adopting the above technical solution, the gears are alternately distributed on both sides of the rack and mesh with the rack. When the rack moves up and down, the gears can be driven to rotate, thereby driving the heat insulation sheet to rotate.
[0021] In summary, the present application includes at least one of the following beneficial effects:
[0022] 1. The heat insulation sheets can rotate to a state of being separated from each other or rotate to a state of being in contact with each other. In winter, when the heat insulation sheets are separated from each other, a channel can be formed between the heat insulation sheets, and heat can move through the channel, so that the heat on the photovoltaic module can be easily transferred to the wall body; in summer, the heat insulation sheets rotate to the state of forming a heat insulation layer, so that heat can be blocked, and further heat transfer to the wall body can be reduced.
[0023] 2. When the heat insulation sheets rotate to the state of forming a heat insulation layer, the arc-shaped sheets can abut against the heat insulation sheets, thereby reducing the situation of heat passing through the gaps between the heat insulation sheets, and further improving the heat insulation effect. Description of the Drawings
[0024] Figure 1 is a schematic structural diagram of an embodiment of the present application;
[0025] Figure 2 is an internal schematic diagram of the frame in an embodiment of the present application;
[0026] Figure 3 is a schematic cross-sectional view of an embodiment of the present application;
[0027] Figure 4 is Figure 2 an enlarged schematic view of part A in
[0028] Figure 5 is Figure 3 an enlarged schematic view of part B in
[0029] Figure 6 is Figure 3 an enlarged schematic view of part C in
[0030] Explanation of reference numerals: 1, wall; 2, frame; 3, photovoltaic module; 4, heat insulation component; 41, heat insulation sheet; 42, drive source; 421, rack; 422, power component; 4221, motor; 4222, screw; 5, extension plate; 6, arc-shaped sheet; 7, trigger sheet; 8, installation cavity; 9, rotating shaft; 10, first opening; 11, second opening; 12, first cover plate; 13, second cover plate; 14, spring; 15, connecting wire; 16, protrusion; 17, connecting column; 18, gear; 19, partition board. Detailed implementation manners
[0031] The following further elaborates on the present application in conjunction with the attached Figures 1-6 drawings.
[0032] An embodiment of the present application discloses a reflective heat-insulating photovoltaic building facade. Referring to Figure 1 and Figure 2 , the building facade includes a wall 1, a frame 2 installed on the wall 1, and a photovoltaic module 3 installed on the frame 2. The photovoltaic module 3 is installed on the side of the frame 2 facing away from the wall 1. The frame 2 is a hollow structure, so that there is a certain space between the photovoltaic module 3 and the wall 1. The photovoltaic module 3 is composed of a photovoltaic panel in the prior art, and the specific structure will not be elaborated here. The building facade further includes a heat insulation component 4 installed in the frame 2, and the heat insulation component 4 can be used to block heat, thereby reducing the heat on the photovoltaic module 3 from directly transferring to the wall 1.
[0033] Referring to Figure 2 and Figure 3 , the heat insulation component 4 includes a heat insulation sheet 41 rotatably installed in the frame 2, and a drive source 42 for driving the heat insulation sheet 41 to rotate. Combining Figure 4, connection columns 17 are fixed to both ends of the heat insulation sheet 41. The connection columns 17 pass through the frame 2 and are rotatably connected to the frame 2, so that the heat insulation sheet 41 is rotatably mounted on the frame 2. The heat insulation sheets 41 are distributed at intervals in the vertical direction. When the driving source 42 drives the heat insulation sheet 41 to rotate, the heat insulation sheet 41 can rotate to be distributed in the vertical direction, and the adjacent upper and lower heat insulation sheets 41 can abut against each other, so that all the heat insulation sheets 41 form a heat insulation layer, thereby reducing the direct transfer of heat on the photovoltaic module 3 to the wall 1. When the driving source 42 drives the heat insulation sheets 41 to rotate and stagger from each other, a channel is formed between the heat insulation sheets 41, and the heat on the photovoltaic module 3 can be transferred to the wall 1 through the gaps between the heat insulation sheets 41. A heat reflection coating is applied to the side of the heat insulation sheet 41 close to the photovoltaic module 3. The heat reflection coating can be a commercially available heat reflection and insulation paint, so that when the heat insulation sheet 41 is in the heat insulation state, it has a better heat insulation effect.
[0034] Refer to Figure 5 , further, the lower end of the heat insulation sheet 41 includes an extension plate 5. The extension plate 5 is integrally fixed to the heat insulation sheet 41 and the extension plate 5 is inclined. The driving source 42 drives the adjacent upper and lower heat insulation sheets 41 to rotate in opposite directions. When the heat insulation sheet 41 rotates towards the state of forming a heat insulation layer, the extension plate 5 can abut against the side wall of the adjacent lower heat insulation sheet 41, so that heat is not easily transferred through the gap between the extension plate 5 and the heat insulation sheet 41, improving the heat insulation effect.
[0035] Refer to Figure 2 and Figure 4 , a part of the connection column 17 at one end passes through the surface of the frame 2, and a gear 18 is coaxially fixed to the part passing through the surface of the connection column 17. The driving source 42 includes a rack 421 vertically mounted on the frame 2 and a power member 422 for driving the rack 421 to move up and down. Teeth are provided on both sides of the rack 421. The gears 18 are alternately distributed on both sides of the rack 421 from top to bottom and mesh with the rack 421. When the power member 422 drives the rack 421 to move up and down, it can drive the gear 18 to rotate, and the adjacent upper and lower gears 18 rotate in opposite directions, thereby driving the heat insulation sheet 41 to rotate, so that the heat insulation sheets 41 approach each other to form a heat insulation layer, or the heat insulation layers move away from each other to form a channel for heat to pass through.
[0036] In this embodiment, the power member 422 includes a screw rod 4222 rotatably connected to the side wall of the frame 2, and a motor 4221 connected to the screw rod 4222. The screw rod 4222 passes through the rack 421, and the screw rod 4222 is threadedly connected to the rack 421. When the motor 4221 drives the screw rod 4222 to rotate, the rack 421 can be driven to move up and down. To improve the stability of the up and down movement of the rack 421, a guide groove can be formed on the side wall of the frame 2, a guide block is fixed on the rack 421, and the guide block extends into the guide groove, so that the up and down sliding of the rack 421 is more stable. In other embodiments, a cylinder or other means can also be used, as long as the mechanism can drive the rack 421 to move up and down.
[0037] Referring to Figure 5 and Figure 6 , an installation cavity 8 is formed on the heat insulation sheet 41. The installation cavity 8 penetrates both sides of the heat insulation sheet 41, and a rotating shaft 9 is rotatably connected in the installation cavity 8. In this embodiment, the installation cavity 8 can be formed on the heat insulation sheet 41 located between the rack 421 and the photovoltaic module 3. An arc-shaped sheet 6 is connected to one side of the rotating shaft 9 close to the photovoltaic module 3, and a trigger sheet 7 is connected to the side of the rotating shaft 9 away from the photovoltaic module 3. When the heat insulation sheets 41 rotate towards each other, the trigger sheet 7 can abut against the inner wall of the extension plate 5 and be pressed by the extension plate 5 to drive the rotating shaft 9 to rotate, so that the arc-shaped sheet 6 flips upwards, and one end of the arc-shaped sheet 6 away from the rotating shaft 9 abuts against the side wall of the upper extension plate 5. Thus, the arc-shaped sheet 6 can form a heat insulation cavity on the side of the extension plate 5 and the heat insulation sheet 41 close to the photovoltaic module 3, further improving the heat insulation effect. The arc-shaped sheet 6 at the uppermost position has a longer length, so that the arc-shaped sheet 6 at the uppermost position abuts against the side wall of the adjacent upper heat insulation sheet 41. In winter, when a channel needs to be formed between the heat insulation sheets 41, the heat insulation sheets 41 rotate away from each other. Under its own weight, the arc-shaped sheet 6 can also flip downwards, and under the limiting action of the side wall of the installation cavity 8, the arc-shaped sheet 6 can only flip to a certain angle and will not overlap on the inner wall of the photovoltaic module 3. A partition plate 19 is fixed inside the upper end of the frame 2, and the partition plate 19 abuts against the uppermost heat insulation sheet 41, thereby reducing the heat flow.
[0038] Referring to Figure 5 and Figure 6 , a first opening 10 is formed at the upper end of the frame 2, a second opening 11 is formed at the lower end of the frame 2, a first cover plate 12 for covering or opening the first opening 10 is hinged on the inner wall of the upper end of the frame 2, and a second cover plate 13 for covering or opening the second opening 11 is slidably connected to the inner bottom surface of the lower end of the frame 2. A torsion spring is also installed between the first cover plate 12 and the frame 2. Under the elastic force of the torsion spring, the first cover plate 12 can cover the first opening 10. A spring 14 is connected between the wall 1 and the second cover plate 13. Under the elastic force of the spring 14, the second cover plate 13 covers the second opening 11.
[0039] The second cover plate 13 has a protruding portion 16 extending upward. When the heat insulation sheet 41 rotates to a state of forming a heat insulation layer, the extension plate 5 on the lowermost heat insulation sheet 41 can abut against the protruding portion 16 and drive the second cover plate 13 to slide, so that the second opening 11 is opened and the spring 14 is compressed. A connection line 15 is connected between the second cover plate 13 and the first cover plate 12. While the second cover plate 13 slides, it can drive the first cover plate 12 to rotate through the connection line 15, so that the first opening 10 is opened. A positioning ring can be installed on the inner wall of the frame 2. The connection line 15 passes through the positioning ring and is then connected to the first cover plate 12 and the second cover plate 13, so that the connection line 15 does not affect the rotation of the heat insulation sheet 41. In the heat insulation state, the heat between the heat insulation sheet 41 and the photovoltaic module 3 can be dissipated through the first opening 10 and the second opening 11, thereby reducing the heat in the inner cavity of the frame 2. In winter, when the heat insulation sheets 41 rotate to a separated state, under the elastic force of the spring 14, the second cover plate 13 covers the second opening 11 again, and the first cover plate 12 covers the first opening 10 again under the action of the torsion spring, so that the heat in the inner cavity of the frame 2 is not easily lost.
[0040] The implementation principle of the embodiment of the present application is as follows: In summer, to reduce the heat transfer to the wall 1, the heat insulation sheets 41 are driven by the driving source 42 to approach each other, so that the extension plate 5 abuts against the adjacent lower heat insulation sheet 41, thereby forming a heat insulation layer by the heat insulation sheets 41. During the process of the heat insulation sheets 41 approaching each other, the trigger piece 7 is pressed by the extension plate 5, so that the arc-shaped piece 6 rotates upward and abuts against the side wall of the upper heat insulation sheet 41, thereby improving the heat insulation effect; and the first opening 10 and the second opening 11 are in an open state, and the heat in the frame 2 is easily dissipated. In winter, when the heat insulation sheets 41 rotate to a separated state, the gap between the heat insulation sheets 41 can allow heat to pass through, and the first opening 10 and the second opening 11 are in a closed state. At this time, heat is easily accumulated in the frame 2 and transferred to the wall 1.
[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A reflective heat-insulating photovoltaic building facade, characterized in that: It includes a wall body (1), a frame (2) arranged on the wall body (1), a photovoltaic module (3) arranged on the frame (2), and a heat insulation component (4) arranged inside the frame (2); the heat insulation component (4) includes a plurality of heat insulation sheets (41) rotatably arranged inside the frame (2), and a driving source (42) for driving the rotation of the heat insulation sheets (41); the heat insulation sheets (41) are spaced apart in the vertical direction, and under the drive of the driving source (42), the rotation directions of the adjacent upper and lower heat insulation sheets (41) are opposite. When the lower end of the heat insulation sheet (41) rotates to abut against the adjacent lower heat insulation sheet (41), all the heat insulation sheets (41) form a heat insulation layer inside the frame (2); when the heat insulation sheets (41) rotate to be separated from each other, the space between the adjacent heat insulation sheets (41) forms a channel for heat to pass through. An extension plate (5) is inclinedly arranged at the lower end of the heat insulation sheet (41). When the heat insulation sheet (41) rotates to the state of forming a heat insulation layer, the extension plate (5) can abut against the side wall of the adjacent heat insulation sheet (41). An arc-shaped sheet (6) is rotatably arranged on the heat insulation sheet (41), and a trigger sheet (7) is arranged on the arc-shaped sheet (6). When the heat insulation sheet (41) rotates to the state of forming a heat insulation layer, the trigger sheet (7) can be pressed by the extension plate (5), so that the arc-shaped sheet (6) rotates upward, and the end of the arc-shaped sheet (6) can abut against the side wall of the adjacent upper extension plate (5).
2. The reflective heat-insulating photovoltaic building facade according to claim 1, characterized in that: An installation cavity (8) is formed on the heat insulation sheet (41), and a rotating shaft (9) is rotatably arranged in the installation cavity (8). The arc-shaped sheet (6) and the trigger sheet (7) are connected to the rotating shaft (9).
3. The reflective and heat-insulating photovoltaic building facade according to claim 2, wherein: A first opening (10) and a second opening (11) are arranged on the frame (2), and a first cover plate (12) for opening and closing the first opening (10) and a second cover plate (13) for opening and closing the second opening (11) are arranged on the frame (2). When the heat insulation sheets (41) form a heat insulation layer, the first opening (10) and the second opening (11) are in an open state. When the heat insulation sheets (41) are staggered from each other, the first opening (10) and the second opening (11) are in a closed state.
4. A reflective and heat-insulating photovoltaic building facade according to claim 3, characterized in that: The first opening (10) is formed at the upper end of the frame (2), and the second opening (11) is formed at the lower end of the frame (2). The first cover plate (12) is hinged to the frame (2), and a torsion spring is provided between the first cover plate (12) and the frame (2) so that the first cover plate (12) can cover the first opening (10). The second cover plate (13) is slidably disposed on the lower bottom surface of the frame (2), and a spring (14) is provided between the second cover plate (13) and the wall (1). Under the action of the spring (14), the second cover plate (13) covers the second opening (11). A connecting line (15) is connected between the second cover plate (13) and the first cover plate (12). When the heat insulation sheet (41) rotates to a state of forming a heat insulation layer, the lowermost heat insulation sheet (41) can push the second cover plate (13) to slide to open the second opening (11), and the first cover plate (12) is rotated to open the first opening (10) through the connecting line (15).
5. The reflective and heat-insulating photovoltaic building facade according to claim 4, wherein: A heat reflective coating is coated on one side of the heat insulation sheet (41) close to the photovoltaic module (3).
6. The reflective and heat-insulating photovoltaic building facade according to claim 5, wherein: Connection columns (17) are provided at both ends of the heat insulation sheet (41). The connection columns (17) are rotatably connected to the frame (2), and one of the connection columns (17) at one end passes through the side wall of the frame (2) and a gear (18) is coaxially provided thereon. The driving source (42) includes a rack (421) mounted on the side wall of the frame (2) and a power member (422) for driving the rack (421) to move up and down. The gears (18) are alternately distributed on both sides of the rack (421) from top to bottom, and the gears (18) can mesh with the rack (421).
Citation Information
Patent Citations
Breathing type photovoltaic phase change composite wall with dynamic heat insulation and preservation functions
CN113338475A
Green building energy-saving wall
CN216948875U