Urban updated old house passive building structure

Abstract

The invention relates to a city updated old house passive building structure, and relates to the technical field of passive constructions.The city updated old house passive building structure comprises a base, a house body is fixed to the upper end of the base, a house cover is fixed to the upper end of the house body, penetrating grooves are formed in the two sides of the house cover, and a sliding groove is formed in the middle of the house cover; a supporting frame is fixed to one side of the house cover, a driving motor is fixed to the middle of the supporting frame, a connecting structure is arranged at the driving end of the driving motor, and two solar panels are arranged on the connecting structure; the connecting structure can drive the two solar panels to move reversely in the length direction of the sliding groove so that the two solar panels can be stored. The driving synchronous wheel is driven by the driving motor to rotate, on one hand, the function that the solar panel stretches out to generate power in the daytime and retracts to be stored at night is achieved, on the other hand, the dust scraping and cleaning function is achieved, on the other hand, the automatic impurity cleaning function is achieved, and the use convenience of the passive building structure is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of passive building technology, specifically to a passive building structure for old buildings in urban renewal. Background Technology

[0002] As urbanization enters the stock renewal phase, many existing old buildings suffer from high energy consumption, poor comfort, and insufficient thermal insulation, failing to meet current green building and energy-saving development requirements. Traditional old building renovations often employ active energy-saving methods, improving the indoor thermal environment by adding active energy supply equipment such as air conditioners and heating. However, this approach not only significantly increases building energy consumption and exacerbates the energy crisis but also generates substantial carbon emissions due to equipment operation, contradicting the "dual-carbon" strategic goal. Against this backdrop, passive building structures have emerged. Based on passive design principles, their core advantage lies in maintaining a comfortable indoor temperature with extremely low energy consumption, combining environmental friendliness and practicality. Unlike active energy supply, passive houses do not rely on active heating equipment. They primarily rely on passively collected solar energy, human body heat, and waste heat from household appliances, combined with heat recovery devices to recover low-grade energy, achieving energy balance without the need for active heat sources. By optimizing the insulation and airtightness of the building envelope, the potential of natural energy is maximized, providing an efficient and feasible green solution for the renewal of existing buildings.

[0003] While existing passive building structures can meet daily usage needs, three major issues remain in practical applications, hindering improvements in their protective capabilities, performance, and ease of use: First, the accompanying solar photovoltaic panels are mostly fixed in design, allowing for solar energy absorption and utilization only during the day. At night, energy collection ceases, and the lack of a storage mechanism makes them vulnerable to impacts from falling objects, increasing the risk of damage and compromising the protective performance of passive building structures. Second, dust and impurities easily accumulate on the surface of solar photovoltaic panels. Existing designs lack automatic cleaning functions, requiring manual intervention to maintain cleanliness. The accumulation of contaminants directly affects the energy absorption efficiency of the photovoltaic modules, thus reducing the overall performance of the passive building structure. Third, in the rainwater harvesting systems of passive buildings, the filter components used to filter impurities in rainwater require manual cleaning, increasing maintenance costs and leading to delays in cleaning, causing inconvenience for users and compromising the ease of use of passive building structures.

[0004] Therefore, it is necessary to invent a passive building structure for urban renewal to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a passive building structure for old buildings in urban renewal, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a passive building structure for urban renewal of old houses, including a base, a house body fixed to the upper end of the base, a roof fixed to the upper end of the house body, through grooves on both sides of the roof, and a sliding groove in the middle of the roof;

[0007] A support frame is fixed to one side of the roof, and a drive motor is fixed in the middle of the support frame. The drive end of the drive motor is provided with a connecting structure, and two solar panels are provided on the connecting structure. The connecting structure can move the two solar panels in opposite directions along the length of the slide to store the two solar panels.

[0008] Preferably, the connection structure includes an active synchronizing pulley, which is connected to a driven synchronizing pulley via a synchronizing belt. A bidirectional threaded rod is fixed in the middle of the driven synchronizing pulley. Threaded blocks are threaded onto the outer surfaces of both sides of the bidirectional threaded rod. Mounting brackets are fixed to the upper ends of the two threaded blocks. Mounting slots are opened in the middle of the two mounting brackets. Solar panels are fixed to the inner walls of the two mounting slots.

[0009] Preferably, the active synchronous pulley is fixed in the middle to the drive end of the drive motor, the active synchronous pulley and the driven synchronous pulley are connected by a synchronous belt, the driven synchronous pulley is fixed in the middle to the middle of the bidirectional threaded rod, the outer surfaces of both ends of the bidirectional threaded rod are rotatably connected to the inner walls of both sides of the roof, the middle of the two threaded blocks are threadedly connected to the outer surfaces of both sides of the bidirectional threaded rod, and the outer surfaces of the two threaded blocks are slidably connected to the inner walls of both sides of the slide groove.

[0010] Preferably, the upper ends of the two threaded blocks are fixed to the middle of the lower ends of the two mounting brackets, the two mounting grooves penetrate the upper side of the two mounting brackets, the two solar panels are embedded and fixed to the inner walls of the two mounting grooves, the two mounting brackets are arranged in an inclined and symmetrical manner, and the outer surfaces of the two mounting brackets are in contact with the inner walls of the through grooves.

[0011] Preferably, a stabilizing groove is provided on the upper side of both mounting grooves, a scraper is slidably connected to the inner wall of both stabilizing grooves, a guide rod is fixed at both ends of both scrapers, a support seat is slidably connected to the outer surface of each guide rod, and a guide groove is provided in the middle of each support seat.

[0012] Preferably, the two stabilizing grooves extend through the two mounting grooves on opposite sides, the outer surfaces of the two scrapers are slidably connected to the inner walls of the two stabilizing grooves, and the outer surfaces of the two scrapers are slidably connected to the outer surface of the solar panel.

[0013] Preferably, one end of each guide rod is fixed to one end of each scraper, the outer surface of each guide rod is slidably connected to the inner wall of each guide groove, each guide groove passes through the middle of each support seat, and the lower end of each support seat is fixed to one side of the roof.

[0014] Preferably, both sides of the bidirectional threaded rod are fixed with driving bevel gears, both driving bevel gears are meshed with driven bevel gears, both driven bevel gears are fixed with a fixing rod in the middle, both fixing rods are fixed with a support block in the middle, both support blocks are fixed with two rotating frames at both ends, both rotating frames are rotatably connected with a limit frame on their outer surface, both limit frames have a limit groove in their middle, both fixing rods are fixed with a cleaning frame at their lower end, the cleaning frame is rotatably connected with a guide tube on its outer surface, the guide tube has several filter holes on its upper side, and both sides of the base have water storage tanks.

[0015] Preferably, the two driving bevel gears are fixed at the middle of both sides of the bidirectional threaded rod, the two driving bevel gears are meshed with the two driven bevel gears, the two driven bevel gears are fixed at the middle of the upper ends of the two fixed rods, the two fixed rods are fixed at the middle of the two support blocks, the two support blocks are fixed at both ends to the inner walls of the two rotating frames, the outer surfaces of the two rotating frames are rotatably connected to the inner walls of the two limiting grooves, the two limiting grooves are opened in the middle of the two limiting frames, and the upper ends of the two limiting frames are fixed to both sides of the roof.

[0016] Preferably, the two cleaning frames are fixed at the lower ends of the two fixing rods at the middle, the outer surfaces of the two cleaning frames are rotatably connected to the inner wall of the conduit, a number of filter holes penetrate the upper side of the conduit, the lower ends of the two conduits are fixed to both sides of the base, and the two conduits are connected to the two water storage tanks.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) The present invention drives the active synchronous wheel to rotate by driving the drive motor, so that the active synchronous wheel, driven synchronous wheel, bidirectional threaded rod, threaded block, mounting bracket, mounting groove and solar panel work together to realize the function of the solar panel extending to generate electricity during the day and retracting at night, effectively avoiding the impact damage of falling objects at night to the photovoltaic panel, and significantly improving the protection of passive buildings.

[0019] (2) The present invention drives the active synchronous wheel to rotate by a drive motor, so that the stabilizing groove, scraper, guide rod, support base and guide groove work together to achieve the function of dust scraping and cleaning. The cleaning is completed when the solar panel is put away at night and the second automatic cleaning is completed when it is extended to generate electricity in the morning. This effectively avoids dust and impurities from blocking the light efficiency, thereby significantly improving the use effect of passive building structure.

[0020] (3) The present invention drives the active synchronous wheel to rotate by driving the drive motor, so that the active bevel gear, driven bevel gear, fixed rod, support block, rotating frame, limit frame, limit groove, cleaning frame, guide tube, filter hole and water storage tank work together to realize the function of automatic cleaning of impurities. No manual operation is required, which brings convenience to use and effectively improves the ease of use of passive building structure. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of the present invention;

[0022] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0023] Figure 3 For the present invention Figure 2 Enlarged view of the structure of section A in the middle;

[0024] Figure 4 For the present invention Figure 2 Enlarged view of the structure of section B in the middle;

[0025] Figure 5 For the present invention Figure 2 Enlarged view of the structure of section C;

[0026] Figure 6 This is a partial structural diagram of the present invention;

[0027] Figure 7 This is a schematic diagram of the catheter structure of the present invention;

[0028] Figure 8 This is a cross-sectional view of the roof of the present invention.

[0029] In the diagram: 1. Base; 2. House body; 3. Roof; 4. Through groove; 5. Slide groove; 6. Support frame; 7. Drive motor; 8. Active synchronous pulley; 9. Driven synchronous pulley; 10. Bidirectional threaded rod; 11. Threaded block; 12. Mounting frame; 13. Mounting groove; 14. Solar panel; 15. Stabilizing groove; 16. Scraper; 17. Guide rod; 18. Support base; 19. Guide groove; 20. Active bevel gear; 21. Driven bevel gear; 22. Fixed rod; 23. Support block; 24. Rotating frame; 25. Limiting frame; 26. Limiting groove; 27. Cleaning frame; 28. Conduit; 29. ​​Filter hole; 30. Water storage tank. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1

[0032] This embodiment provides a passive building structure for old buildings in urban renewal;

[0033] Please see Figure 1 - Figure 8As shown, the structure includes a base 1, a house body 2 fixed to the upper end of the base 1, a roof 3 fixed to the upper end of the house body 2, through slots 4 on both sides of the roof 3, and a sliding groove 5 in the middle of the roof 3; a support frame 6 fixed to one side of the roof 3, a drive motor 7 fixed to the middle of the support frame 6, and a connecting structure at the drive end of the drive motor 7, including a driving synchronous pulley 8, which is connected to a driven synchronous pulley 9 via a synchronous belt; a bidirectional threaded rod 10 fixed to the middle of the driven synchronous pulley 9, and threaded blocks 11 threadedly connected to the outer surfaces of both sides of the bidirectional threaded rod 10, with a mounting bracket fixed to the upper end of each threaded block 11. Mounting brackets 12, each with a mounting groove 13 in the middle, and solar panels 14 fixed to the inner walls of both mounting grooves 13. The solar panels 14, adapted to passive building structures, are the core component for achieving building energy self-sufficiency. Their design perfectly aligns with the core logic of passive buildings: "passive collection and efficient utilization." These solar panels 14 are made of high-efficiency monocrystalline or polycrystalline silicon, with a low-reflection, anti-fouling coating on the surface. This improves solar radiation absorption and reduces the impact of dust accumulation on energy conversion efficiency, highly meeting the "low-energy operation" requirements of passive buildings. In terms of installation layout, the solar panels 14... The solar panel 14 is embedded in the through slot 4 of the roof 3 via a retractable mounting bracket 12. During the day, it extends synchronously with the mounting bracket 12 to receive solar energy at an optimal tilt angle, efficiently converting light energy into electrical energy to provide clean energy for indoor lighting, small household appliances, and other applications, supplementing the energy supply of the passive building. At night, it retracts into the roof 3 with the mounting bracket 12, avoiding the risk of impact from falling objects and maintaining the integrity of the building envelope. This meets the stringent requirements of passive buildings for the airtightness and safety of the building envelope. Furthermore, the solar panel 14 works in synergy with the building's heat recovery system: its operation... The small amount of residual heat generated during the process can be conducted to the indoor heat storage body through the mounting frame 12, or recovered and utilized by the heat recovery device to help maintain a stable indoor temperature and reduce the building's dependence on active energy. In addition, the solar panels 14 with an automatic cleaning mechanism can complete the removal of surface dust during the expansion and contraction process in the morning and evening, and always maintain a state of high-efficiency energy conversion. This is consistent with the design concept of "low operation and maintenance and high adaptability" of passive buildings, and has become a key component of the three-in-one system of "natural energy utilization to energy-saving operation to safety protection" in the passive building structure, further strengthening the green and low-carbon attributes and practical value of the building.

[0034] Please refer to it again. Figure 1 - Figure 8As shown, the active synchronous wheel 8 is fixed in the middle to the drive end of the drive motor 7. The active synchronous wheel 8 and the driven synchronous wheel 9 are connected by a synchronous belt. The driven synchronous wheel 9 is fixed in the middle to the middle of the bidirectional threaded rod 10. The outer surfaces of both ends of the bidirectional threaded rod 10 are rotatably connected to the inner walls of both sides of the roof 3. The middle of the two threaded blocks 11 is threadedly connected to the outer surfaces of both sides of the bidirectional threaded rod 10. The outer surfaces of the two threaded blocks 11 are slidably connected to the inner walls of both sides of the slide groove 5. The upper ends of the two threaded blocks 11 are fixed to the middle of the lower ends of the two mounting brackets 12. The two mounting grooves 13 penetrate through the upper side of the two mounting brackets 12. The two solar panels 14 are embedded and fixed in the inner walls of the two mounting grooves 13. The two mounting brackets 12 are arranged in an inclined symmetrical manner. The outer surfaces of the two mounting brackets 12 are in contact with the inner wall of the through groove 4.

[0035] The specific implementation process is as follows: The drive motor 7 drives the active synchronous wheel 8 to rotate, which in turn drives the driven synchronous wheel 9 to rotate via a synchronous belt. The rotating driven synchronous wheel 9 rotates together with the bidirectional threaded rod 10 fixed in the middle of the driven synchronous wheel 9. Under the limiting action of the sliding groove 5 in the middle of the roof 3, the rotation of the bidirectional threaded rod 10 will drive the two threaded blocks 11 connected to its two sides to move in the opposite direction. The mounting bracket 12 fixed at the upper end of the threaded block 11 moves in the opposite direction synchronously. The mounting bracket 12 drives the embedded and fixed solar panel 14 to move through the mounting groove 13 in the middle: when the two solar panels 14 are close to each other, they can be retracted into the roof 3 for storage; when they are far apart and fit against the inner wall of the through groove 4 of the roof 3, they can start normal solar power generation. This structure realizes the function of the solar panel 14 extending to generate electricity during the day and retracting at night, effectively avoiding the impact damage of falling objects at night to the photovoltaic panel, and significantly improving the protection of passive buildings.

[0036] Example 2

[0037] Please see Figure 1 - Figure 8 As shown, a dust scraping and cleaning function has been added based on Embodiment 1;

[0038] Please refer to it again. Figure 1 - Figure 8As shown, each of the two mounting slots 13 has a stabilizing slot 15 on its upper side. Scrapers 16 are slidably connected to the inner walls of both stabilizing slots 15. Guide rods 17 are fixed to both ends of each scraper 16. A support seat 18 is slidably connected to the outer surface of each guide rod 17. A guide groove 19 is formed in the middle of each support seat 18. The two stabilizing slots 15 extend through the opposite sides of the two mounting slots 13. The outer surfaces of the two scrapers 16 are slidably connected to the inner walls of the two stabilizing slots 15. The outer surfaces of the two scrapers 16 are also slidably connected to the outer surface of the solar panel 14. Each guide rod... One end of each guide rod 17 is fixed to one end of each scraper 16. The outer surface of each guide rod 17 is slidably connected to the inner wall of each guide groove 19. Each guide groove 19 passes through the middle of each support 18. The lower end of each support 18 is fixed to one side of the roof 3. The scraper 16 is made of flexible materials such as high-elasticity silicone and wear-resistant polyurethane. Its material properties are highly compatible with the concept of "efficient adaptation and low-damage operation and maintenance" of passive building structures. The flexible material has excellent deformation ability and can closely fit the surface curvature of the solar panel 14, even if the photovoltaic panel has slight deformation. Even with minor deformations due to installation errors or long-term use, the flexible scraper can achieve thorough cleaning without blind spots, completely removing surface dust, floating dust, and a small amount of attached impurities. This avoids the scratches and cleaning blind spots that are easily caused by rigid scrapers 16, effectively protecting the light-transmitting coating of the solar panel 14 and extending its service life. This aligns with the "long-term, low-consumption" operational requirements of passive buildings. At the same time, the flexible scraper 16 is soft and will not cause hard wear to the surface of the solar panel 14 when it moves synchronously with the mounting frame 12 for cleaning. It also has excellent wear resistance and anti-aging properties, eliminating the need for frequent replacement and reducing the operation and maintenance costs of passive buildings. This fits the design logic of "low intervention and high stability." This collaborative cleaning between the flexible scraper 16 and the solar panel 14 not only ensures the continuous and efficient energy conversion of photovoltaic modules but also maintains the overall energy efficiency of the passive building structure through low-loss design. It further strengthens the synergistic effect of "cleaning mechanism to energy utilization to structural operation and maintenance," allowing the solar panel 14 to always maintain optimal working condition in the passive building system and helping the building maximize the use of natural energy.

[0039] The specific implementation process is as follows: The drive motor 7 drives the active synchronous wheel 8 to rotate, which in turn drives the driven synchronous wheel 9 and the bidirectional threaded rod 10 to rotate via a synchronous belt. The rotating bidirectional threaded rod 10 drives the two threaded blocks 11 connected on both sides to move in opposite directions, thereby driving the mounting frame 12 fixed at the upper end of the threaded blocks 11 to move synchronously in opposite directions. A stabilizing groove 15 is provided in the middle of the mounting frame 12. A scraper 16, which is slidably assembled in the groove, has guide rods 17 fixed at both ends. The guide rods 17 are embedded in the guide grooves 19 of the support seat 18 on the base 1 and are limited by them. When the mounting frame 12 moves the solar panel 14, the scraper 16 slides along the surface of the solar panel 14 under the constraint of the guide structure, realizing the function of dust scraping and cleaning. The cleaning is completed once when the solar panel 14 is put away at night and a second automatic cleaning is completed when it is extended to generate electricity in the morning. This effectively avoids dust and impurities from blocking the light efficiency, thereby significantly improving the performance of the passive building structure.

[0040] Example 3

[0041] Please see Figure 1 - Figure 8 As shown, an automatic impurity cleaning function has been added based on Embodiment 1;

[0042] Please refer to it again. Figure 1 - Figure 8 As shown, both sides of the bidirectional threaded rod 10 are fixed with driving bevel gears 20. Each driving bevel gear 20 is meshed with a driven bevel gear 21. A fixing rod 22 is fixed to the middle of each of the two driven bevel gears 21. A support block 23 is fixed to the middle of each of the two fixing rods 22. Two rotating frames 24 are fixed to both ends of each support block 23. Limiting frames 25 are rotatably connected to the outer surfaces of each of the two rotating frames 24. Limiting grooves 26 are formed in the middle of each of the two limiting frames 25. Cleaning frames 27 are fixed to the lower ends of each of the two fixing rods 22. A conduit 28 is rotatably connected to the outer surface of the cleaning frame 27. Several filter holes 29 are formed on the upper side of the conduit 28. Water storage tanks 30 are formed on both sides of the base 1. The two driving bevel gears 20 are fixed to the middle of both sides of the bidirectional threaded rod 10. Gear 20 meshes with two driven bevel gears 21. The middle of the two driven bevel gears 21 is fixed to the upper end of two fixed rods 22. The middle of the two fixed rods 22 is fixed to the middle of two support blocks 23. The two ends of the two support blocks 23 are fixed to the inner walls of two rotating frames 24. The outer surfaces of the two rotating frames 24 are rotatably connected to the inner walls of two limiting grooves 26. The two limiting grooves 26 are opened in the middle of two limiting frames 25. The upper ends of the two limiting frames 25 are fixed to both sides of the roof 3. The middle of the two cleaning frames 27 is fixed to the lower end of the two fixed rods 22. The outer surfaces of the two cleaning frames 27 are rotatably connected to the inner wall of the conduit 28. Several filter holes 29 penetrate the upper side of the conduit 28. The lower ends of the two conduits 28 are fixed to both sides of the base 1. The two conduits 28 are connected to two water storage tanks 30.

[0043] The specific implementation process is as follows: The drive motor 7 drives the active synchronous wheel 8 to rotate, which in turn drives the driven synchronous wheel 9 and the bidirectional threaded rod 10 to rotate via a synchronous belt. The rotating bidirectional threaded rod 10 then drives the active bevel gears 20 fixed on both sides to rotate synchronously. The active bevel gears 20 and the driven bevel gears 21 mesh and drive the fixed rod 22 fixed in the middle of the driven bevel gear 21 to rotate. The support block 23 on the fixed rod 22 moves along with it, driving the rotating frame 24 at both ends to rotate. The rotating frame 24 maintains stable rotation under the constraint of the limiting grooves 26 of the limiting frame 25 on both sides of the roof 3. The cleaning frame 27 at the lower end of the fixed rod 22 also rotates synchronously and works against the inner wall of the conduit 28 on both sides of the base 1. Rainwater flows from the roof 3 into the limiting frame 25 and then into the conduit 28. The filter hole 29 on the upper side of the conduit 28 can filter impurities in the rainwater. The filtered rainwater is guided through the conduit 28 to the water storage tank 30 of the base 1, while the impurities remain on the upper side of the conduit 28. When the cleaning rack 27 rotates with the fixed rod 22 in the morning and evening, it will gather the accumulated impurities. When the height of the accumulated impurities is higher than that of the conduit 28, they will be thrown out of the conduit 28 under the centrifugal force generated by the rotation, realizing the function of automatic cleaning of impurities. No manual operation by staff is required, which brings convenience to the user and effectively improves the ease of use of passive building structures.

[0044] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A passive building structure for old buildings in urban renewal, comprising a base (1), characterized in that: The base (1) is fixed with a house body (2) at the upper end, and a roof (3) is fixed with the upper end of the house body (2). The roof (3) has through grooves (4) on both sides and a sliding groove (5) in the middle. A support frame (6) is fixed on one side of the roof (3), and a drive motor (7) is fixed in the middle of the support frame (6). The drive end of the drive motor (7) is provided with a connection structure, and two solar panels (14) are provided on the connection structure. The connection structure can move the two solar panels (14) in the opposite direction along the length of the slide (5) to store the two solar panels (14).

2. The passive building structure for urban renewal of old buildings according to claim 1, characterized in that: The connection structure includes an active synchronous wheel (8), which is connected to a driven synchronous wheel (9) via a synchronous belt. A bidirectional threaded rod (10) is fixed in the middle of the driven synchronous wheel (9). Threaded blocks (11) are threaded onto the outer surfaces of both sides of the bidirectional threaded rod (10). Mounting brackets (12) are fixed to the upper ends of the two threaded blocks (11). Mounting slots (13) are opened in the middle of the two mounting brackets (12). Solar panels (14) are fixed to the inner walls of the two mounting slots (13).

3. The passive building structure for urban renewal of old buildings according to claim 2, characterized in that: The active synchronous wheel (8) is fixed in the middle to the drive end of the drive motor (7). The active synchronous wheel (8) and the driven synchronous wheel (9) are connected by a synchronous belt. The driven synchronous wheel (9) is fixed in the middle to the middle of the bidirectional threaded rod (10). The outer surfaces of both ends of the bidirectional threaded rod (10) are rotatably connected to the inner walls of both sides of the roof (3). The two threaded blocks (11) are threaded in the middle to the outer surfaces of both sides of the bidirectional threaded rod (10). The outer surfaces of the two threaded blocks (11) are slidably connected to the inner walls of both sides of the slide groove (5).

4. The passive building structure for urban renewal of old buildings according to claim 2, characterized in that: The upper ends of the two threaded blocks (11) are fixed to the middle of the lower ends of the two mounting brackets (12), the two mounting grooves (13) pass through the upper side of the two mounting brackets (12), the two solar panels (14) are embedded and fixed in the inner wall of the two mounting grooves (13), the two mounting brackets (12) are arranged in an inclined symmetrical manner, and the outer surface of the two mounting brackets (12) is in contact with the inner wall of the through groove (4).

5. A passive building structure for urban renewal of old buildings according to claim 2, characterized in that: Both mounting slots (13) have stabilizing slots (15) on their upper sides. Both stabilizing slots (15) have scrapers (16) slidably connected to their inner walls. Both scrapers (16) have guide rods (17) fixed at both ends. Each guide rod (17) has a support seat (18) slidably connected to its outer surface. Each support seat (18) has a guide slot (19) in its middle.

6. A passive building structure for urban renewal of old buildings according to claim 5, characterized in that: Two stabilizing grooves (15) extend through the two mounting grooves (13) on opposite sides. The outer surfaces of the two scrapers (16) are slidably connected to the inner walls of the two stabilizing grooves (15) and the outer surfaces of the two scrapers (16) are slidably connected to the outer surface of the solar panel (14).

7. A passive building structure for urban renewal of old buildings according to claim 5, characterized in that: One end of each guide rod (17) is fixed to one end of each scraper (16), the outer surface of each guide rod (17) is slidably connected to the inner wall of each guide groove (19), each guide groove (19) passes through the middle of each support seat (18), and the lower end of each support seat (18) is fixed to one side of the roof (3).

8. A passive building structure for urban renewal of old buildings according to claim 2, characterized in that: Both sides of the bidirectional threaded rod (10) are fixed with active bevel gears (20), and both active bevel gears (20) are meshed with driven bevel gears (21). Both driven bevel gears (21) are fixed with a fixing rod (22) in the middle. Both fixing rods (22) are fixed with a support block (23) in the middle. Both support blocks (23) are fixed with two rotating frames (24) at both ends. Both rotating frames (24) are rotatably connected with a limit frame (25) on their outer surfaces. Both limit frames (25) are provided with a limit groove (26) in the middle. Both fixing rods (22) are fixed with a cleaning frame (27) at their lower ends. The cleaning frame (27) is rotatably connected with a conduit (28) on its outer surface. Several filter holes (29) are provided on the upper side of the conduit (28). Both sides of the base (1) are provided with water storage tanks (30).

9. A passive building structure for urban renewal of old buildings according to claim 8, characterized in that: The two active bevel gears (20) are fixed in the middle on both sides of the bidirectional threaded rod (10). The two active bevel gears (20) are meshed with the two driven bevel gears (21). The two driven bevel gears (21) are fixed in the middle on the upper end of the two fixed rods (22). The two fixed rods (22) are fixed in the middle on the middle of the two support blocks (23). The two ends of the two support blocks (23) are fixed on the inner wall of the two rotating frames (24). The outer surface of the two rotating frames (24) is rotatably connected to the inner wall of the two limiting grooves (26). The two limiting grooves (26) are opened in the middle of the two limiting frames (25). The upper ends of the two limiting frames (25) are fixed on both sides of the roof (3).

10. A passive building structure for urban renewal of old buildings according to claim 8, characterized in that: The two cleaning racks (27) are fixed in the middle to the lower ends of the two fixed rods (22), the outer surfaces of the two cleaning racks (27) are rotatably connected to the inner wall of the conduit (28), a number of filter holes (29) pass through the upper side of the conduit (28), the lower ends of the two conduits (28) are fixed to both sides of the base (1), and the two conduits (28) are connected to the two water storage tanks (30).

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