Low-energy building outer wall and construction method thereof

Abstract

The application discloses a low-energy-consumption building outer wall and a construction method thereof, and relates to the technical field of building outer walls, which comprises a bottom plate, a side plate, an outer wall plate and an inner wall plate, and forms a collecting area and a heat insulation area composed of a plurality of heat insulation units between the two; the collecting area is provided with a groove body and an arc-shaped top plate, the top plate is provided with filter holes, the bottom of the groove body is connected with a water faucet through a water delivery pipe, a connecting plate is mounted on the outer wall of the outer wall plate, a moving plate is slidably arranged in the connecting plate, the moving plate is connected with a shell through a connecting rod containing an expansion material telescopic rod, and a heat conduction rod is fixed on the shell; the telescopic rod expands to push the moving plate when the temperature is high, so that the water guide hole of the moving plate is communicated with the water permeable hole of the connecting plate, and the rainwater in the collecting groove is guided to the surface of the outer wall to evaporate and reduce the temperature; and the water guide hole and the water permeable hole are staggered in a natural state. The application can realize rainwater collection and passive evaporation cooling without active energy consumption, and can reduce the energy consumption of buildings by cooperating with the heat insulation units to block the heat bridge.

Description

Technical Field

[0001] This invention relates to the field of building exterior wall technology, and more specifically, to a low-energy building exterior wall and its construction method. Background Technology

[0002] Low-energy buildings are an important development direction in the current construction field. Their exterior wall structures usually need to reduce operating energy consumption as much as possible while ensuring good thermal insulation performance. In the existing technology, the exterior walls of low-energy buildings mostly adopt a structural form that combines inner and outer wall panels with thermal insulation materials. For example, an insulation layer is filled between the inner and outer wall panels or thermal insulation units are set to reduce the transfer of heat between indoors and outdoors.

[0003] A search revealed that Chinese utility model patent CN216766369U discloses an environmentally friendly green building wall, which includes a hollow wall body. The inner wall of the wall body is fixed with multiple water storage components. The wall body is also fixed with a rainwater collection tank for collecting and storing rainwater. A water pump is fixed inside the rainwater collection tank. The water pump is connected to a spray pipe, which is connected to multiple nozzles facing the water storage components. Water is sprayed onto the water storage components through the nozzles to remove heat, thereby reducing the amount of outdoor heat transferred into the room through the wall.

[0004] The above-mentioned scheme requires rainwater collection and sprinkler cooling to rely on active energy-consuming equipment such as water pumps, which increases the building's operating energy consumption and contradicts the original design intention of low-energy buildings.

[0005] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a low-energy building exterior wall and its construction method, so as to solve the technical defects existing in the above-mentioned background technology.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a low-energy building exterior wall, comprising a base plate, side plates, an exterior wall panel, and an interior wall panel, wherein a collection area and a heat insulation area are formed between the base plate, side plates, exterior wall panel, and interior wall panel, the heat insulation area being composed of a plurality of heat insulation units, the collection area comprising a trough and a top plate fixedly connected between the base plate, side plates, exterior wall panel, and interior wall panel, the plurality of heat insulation units filling the space enclosed by the trough, exterior wall panel, and interior wall panel, the top plate being located above the trough, and the top surface of the top plate being arc-shaped, the top plate having a plurality of filter holes, and a water supply pipe being provided at the bottom of the trough, the outlet end of the water supply pipe penetrating the bottom side of the exterior wall panel to the outside and connected to a The faucet has a connecting plate on the outer wall of the exterior wall panel. The top of the connecting plate has a collection groove, and the interior of the connecting plate has an installation groove. A movable plate is slidably connected in the installation groove. The movable plate is connected to the inner wall of the installation groove via a connecting rod. The connecting rod includes a housing and a telescopic rod made of expandable material installed in the housing. The telescopic rod is connected to the side wall of the movable plate, and in its natural state, the movable plate abuts against the housing. A heat-conducting rod is fixedly connected to the telescopic rod, and the heat-conducting rod passes through the connecting plate to the outside. The movable plate has several water guiding holes, and the connecting plate has several water permeable holes. When the movable plate abuts against the housing, the water guiding holes and water permeable holes are staggered.

[0008] The present invention is further configured such that: a driving assembly is provided on the outer wall of the outer wall panel to drive the connecting plate to slide along the outer wall of the outer wall panel; the driving assembly includes a dual-head motor installed on the outer wall of the outer wall panel and a control panel for controlling the operation of the dual-head motor; a driving rod is fixedly connected to the two output ends of the dual-head motor; driven rods are rotatably connected to both sides of the outer wall of the outer wall panel; the driving rod and the driven rod are mutually transmitted through a gear set; connecting blocks are fixedly connected to both ends of the connecting plate; and the driven rod is threadedly connected to the connecting block.

[0009] The present invention is further configured such that: the dual-head motor, the driving rod, and the driven rod are all provided with protective shells, and the outer wall of the protective shells located on the driving rod and the driven rod is provided with a moving groove, the connecting block is slidably connected in the moving groove, and its bottom is connected to the bottom side wall of the moving groove through an elastic net.

[0010] The present invention is further configured such that: a filter screen is provided on the collection tank, and the water permeable holes at the bottom of the connecting plate are inclined toward the side of the outer wall panel.

[0011] The present invention is further configured such that: the shell is made of polyvinyl chloride, the telescopic rod is made of polypropylene, and the heat-conducting rod is made of copper-nickel alloy.

[0012] The present invention is further configured such that: a material inlet is provided on the side of the connecting plate away from the outer wall panel, which is in communication with the water guide hole, and a baffle is detachably connected to the material inlet.

[0013] The invention is further configured such that: the heat insulation unit includes an installation frame, hollow bricks embedded in the installation frame, and a graphite polystyrene board fixed to the inner side of the hollow bricks facing the outer wall panel or the inner wall panel; the inner side of the outer wall panel or the inner wall panel is provided with a groove for installing the graphite polystyrene board; and two adjacent installation frames are connected by hexagonal self-drilling screws and are provided with heat insulation pads.

[0014] The present invention is further configured such that: the interior of the mounting frame is provided with a connecting groove, the surface of the mounting frame is provided with at least two mutually symmetrical through holes, the through holes are interconnected with the connecting groove, a heat-conducting core is provided in the connecting groove, both ends of the heat-conducting core pass through the through holes and face the inner side of the outer wall panel, and the thermal conductivity of the heat-conducting core is greater than that of the mounting frame.

[0015] A construction method for a low-energy building exterior wall includes the following steps: S1: Install the outer wall panel and the inner wall panel, and fix the connecting trough between them. Fix the top plate on the top of the trough, so that the top surface of the top plate is arc-shaped and has several filter holes. S2: Install a water supply pipe at the bottom of the tank and extend the outlet of the water supply pipe through the outer wall panel to the outside, with a faucet interface reserved; S3: Install a base plate between the bottom ends of the outer wall panel and the inner wall panel, then fill several insulation units in sequence in the space enclosed by the groove, the outer wall panel and the inner wall panel to form an insulation zone, and then install the side panel. S4: Install the drive assembly on the outer wall of the exterior wall panel and install the connecting plate on the drive assembly so that the connecting plate can slide along the outer wall of the exterior wall panel; S5: Pre-assemble the movable plate, connecting rod, and heat-conducting rod inside the connecting plate: Slide the movable plate into the mounting groove of the connecting plate, connect the movable plate to the inner wall of the mounting groove through the connecting rod, the connecting rod includes a housing and a telescopic rod made of expansion material inside the housing, so that the telescopic rod is connected to the side wall of the movable plate, and the telescopic rod makes the movable plate abut against the housing in its natural state; then fix the heat-conducting rod to the housing and make the heat-conducting rod extend to the outside of the connecting plate; S6: Adjust the position of the movable plate so that when the movable plate abuts against the housing, the water guide holes on the movable plate and the water permeable holes on the connecting plate are staggered.

[0016] The present invention is further configured such that, in step S3, the filling method of each heat insulation unit is as follows: first, hollow bricks are laid in the installation frame, and then graphite polystyrene boards are fixed on the inner side of the hollow bricks facing the outer wall panel and the inner wall panel; then, two adjacent installation frames are connected by hexagonal self-drilling screws and heat insulation pads are inserted; finally, the installation frame is pushed into the heat insulation area so that the graphite polystyrene boards are embedded in the grooves on the inner side of the outer wall panel and the inner wall panel respectively.

[0017] In summary, the present invention has the following beneficial effects: By setting up a top plate to collect rainwater and store it in a tank, along with water pipes and faucets, rainwater can be collected and reused without power. At the same time, there is a connecting plate on the outside of the exterior wall panel, and the movable plate inside is driven by thermal expansion material. In the high temperature of summer, the heat-conducting rod senses the outside temperature, and the heat is transferred to the shell to expand the telescopic rod, pushing the movable plate to move and make the water guide hole and the water permeable hole open. This guides the rainwater in the collection tank to the surface of the exterior wall panel. The rainwater evaporates and absorbs heat to remove heat from the wall, forming a passive cooling cycle. No additional electricity is required, which reduces the building's cooling energy consumption and meets the design intention of low-energy buildings. The movable plate and telescopic rod structure inside the connecting plate can automatically adjust according to the ambient temperature. Under natural conditions (low temperature or normal temperature), the water guide holes and water permeable holes are staggered and the water permeable channel is closed to prevent rainwater from continuously wetting the wall when cooling is not needed (such as in winter or rainy days), thus avoiding excessive moisture in the wall that could lead to a decrease in thermal insulation performance or mold damage. However, it automatically opens when the temperature is high, realizing water supply on demand, which not only ensures the cooling effect but also saves water resources. The insulation zone consists of several insulation units. Each unit adopts a composite structure of installation frame, hollow bricks and graphite polystyrene board. The graphite polystyrene board is embedded in the grooves of the outer wall panel and the inner wall panel to form a continuous and tight insulation layer. At the same time, insulation gaskets are set between adjacent installation frames to effectively block the heat bridge transfer between the frames. With the heat-conducting core embedded in the installation frame, the locally accumulated heat can be quickly dispersed or discharged, further optimizing the overall insulation performance of the wall, reducing the heat exchange between indoor and outdoor spaces, and reducing energy consumption for heating in winter and cooling in summer. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 This indicates the overall external structure of the invention; Figure 2 Cross-sectional view of the present invention Figure 1 This demonstrates the internal structure of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 This illustrates the external structure of the heat insulation unit in this invention; Figure 4 Cross-sectional view of the present invention Figure 2This demonstrates the internal structure of the heat insulation unit in this invention; Figure 5 Cross-sectional view of the present invention Figure 3 This demonstrates the internal structure of the present invention; Figure 6 Cross-sectional view of the present invention Figure 4 This demonstrates the internal structure of the present invention; Figure 7 for Figure 2 The enlarged view at point A in the figure shows the connection relationship between the telescopic rod and the movable plate in this invention; Figure 8 for Figure 6 The enlarged view at point B in the figure shows the connection relationship between the movable plate and the connecting plate in this invention.

[0019] In the diagram: 1. Exterior wall panel; 2. Interior wall panel; 3. Insulation unit; 4. Tank; 5. Top plate; 6. Filter hole; 7. Water pipe; 8. Faucet; 9. Connecting plate; 10. Collection tank; 11. Installation tank; 12. Moving plate; 13. Connecting rod; 14. Housing; 15. Telescopic rod; 16. Heat-conducting rod; 17. Water guide hole; 18. Water permeable hole; 19. Dual-head motor; 20. Heat-conducting core; 21. Driving rod; 22. Driven rod; 23. Gear set; 24. Connecting block; 25. Protective shell; 26. Moving tank; 27. Elastic net; 28. Filter screen; 29. ​​Material inlet; 30. Baffle; 31. Installation frame; 32. Hollow brick; 33. Graphite polystyrene board; 34. Groove; 35. Through hole; 36. Connecting tank. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0021] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] A type of low-energy building exterior wall, such as Figures 1-8 As shown, it includes a base plate, side plates, an outer wall panel 1 and an inner wall panel 2. A collection area and a heat insulation area are formed between the base plate, side plates, outer wall panel 1 and inner wall panel 2. The heat insulation area is composed of several heat insulation units 3.

[0024] The collection area includes a trough 4 and a top plate 5 fixedly connected between the bottom plate, side plates, outer wall panel 1 and inner wall panel 2. Several heat insulation units 3 are filled within the space enclosed by the trough 4, outer wall panel 1 and inner wall panel 2. This ensures the continuity of the heat insulation area while leaving an independent space for the collection area. The top plate 5 is located above the trough 4 and the top surface of the top plate 5 is arc-shaped. Several filter holes 6 are opened on the top plate 5. The arc-shaped top surface helps to guide rainwater to the center and flow into the filter holes 6, while preventing debris from accumulating on the top surface. The filter holes 6 can intercept coarse particles such as leaves and gravel, allowing only rainwater to enter the trough 4 for storage. A water supply pipe 7 is installed at the bottom of the trough 4. The outlet of the water supply pipe 7 passes through the bottom side of the outer wall panel 1 to the outside and is connected to a faucet 8. The rainwater stored in the trough 4 can flow out by gravity and be directly taken out through the faucet 8 for greening irrigation, ground washing or summer cooling. No active energy-consuming equipment such as water pumps is required throughout the process.

[0025] A connecting plate 9 is provided on the outer wall of the outer wall panel 1. A collection trough 10 is provided on the top of the connecting plate 9. When it rains, the rainwater first falls into the collection trough 10. Some of the rainwater is directly used to moisten the outer wall of the wall, while the excess rainwater flows down the outer wall of the outer wall panel 1 or enters the trough 4 through the top plate 5 for storage.

[0026] The connecting plate 9 has an internal mounting groove 11, and a movable plate 12 is slidably connected in the mounting groove 11. The movable plate 12 is connected to the inner wall of the mounting groove 11 via a connecting rod 13. The connecting rod 13 includes a housing 14 and a telescopic rod 15 made of expansion material installed in the housing 14. The telescopic rod 15 is connected to the side wall of the movable plate 12, and in its natural state (when the ambient temperature is low or at room temperature), the movable plate 12 is in contact with the housing 14. A heat-conducting rod 16 is fixedly connected to the telescopic rod 15. The heat-conducting rod 16 passes through the connecting plate 9 to the outside and is used to sense the external ambient temperature and transfer heat to the inner cavity of the housing 14.

[0027] The movable plate 12 has several water guide holes 17 and the connecting plate 9 has several water permeable holes 18. When the movable plate 12 abuts against the shell 14, the water guide holes 17 and water permeable holes 18 are staggered. At this time, the water permeable channel is closed and the rainwater in the collection tank 10 cannot flow out, thereby preventing the wall from being continuously wetted in seasons when cooling is not required (such as winter or rainy days), and preventing the wall from getting damp, which would lead to a decrease in thermal insulation performance or mold.

[0028] When high temperatures arrive in summer, external heat is conducted to the housing 14 through the heat-conducting rod 16, causing the temperature inside the housing 14 to rise. The telescopic rod 15, made of a high expansion coefficient material (such as polypropylene), expands significantly when heated, increasing its length. This pushes the moving plate 12 to slide away from the housing 14. After the moving plate 12 moves, the water guide hole 17 gradually connects with the water permeable hole 18, opening the water permeable channel. At this time, the rainwater stored in the collection tank 10 (or the rainwater collected in real time) flows sequentially through the water guide hole 17 and the water permeable hole 18, and then along the bottom surface of the connecting plate 9. Rainwater flows evenly down the outer wall of the exterior wall panel 1. As the rainwater evaporates on the wall surface, it absorbs a large amount of latent heat of vaporization, thereby reducing the surface temperature of the exterior wall panel 1 and reducing the amount of outdoor heat transferred into the room through the wall. When the temperature drops, the telescopic rod 15 cools and contracts, returning to its original length under its own elasticity or natural state. This pulls the movable plate 12 back to its original position, where it contacts the shell 14. The water guide hole 17 and the water permeable hole 18 are then misaligned again, closing the water permeable channel. The entire process is completed automatically, relying entirely on the thermal expansion and contraction characteristics of the material, without any external energy or electronic control, thus achieving passive intelligent cooling.

[0029] To facilitate cleaning of debris inside the connecting plate 9 or replacement of the filter screen 28, a drive assembly is provided on the outer wall of the outer wall panel 1 to drive the connecting plate 9 to slide along the outer wall of the outer wall panel 1. The drive assembly includes a dual-head motor 19 installed on the outer wall of the outer wall panel 1 and a control panel for controlling the operation of the dual-head motor 19. The two output ends of the dual-head motor 19 are fixedly connected to the drive rod 21, and the two sides of the outer wall of the outer wall panel 1 are rotatably connected to the driven rod 22. The drive rod 21 and the driven rod 22 are mutually transmitted through the gear set 23. The two ends of the connecting plate 9 are fixedly connected to the connecting block 24. The driven rod 22 is threadedly connected to the connecting block 24. When the dual-head motor 19 starts, the drive rod 21 drives the driven rod 22 to rotate synchronously through the gear set 23. Since the connecting block 24 is threadedly engaged with the driven rod 22, the rotational motion of the driven rod 22 is converted into the linear motion of the connecting block 24, thereby driving the entire connecting plate 9 to slide up and down along the outer wall of the outer wall panel 1. After the connecting plate 9 is lowered to the low position, the operator can safely and conveniently clean the collection tank 10 or replace the filter screen 28. After completion, it is reset, avoiding the risk of working at height.

[0030] Furthermore, the dual-head motor 19, the driving rod 21, and the driven rod 22 are all equipped with protective shells 25 to prevent rainwater and dust from entering the transmission components and extend their service life. The outer wall of the protective shell 25 located on the driving rod 21 and the driven rod 22 is provided with a moving groove 26. The connecting block 24 is slidably connected in the moving groove 26, and its bottom is connected to the bottom side wall of the moving groove 26 through an elastic net 27. The elastic net 27 can provide a certain auxiliary restoring force when the connecting block 24 moves, and can also close the opening of the moving groove 26 to prevent debris from entering the interior of the protective shell 25.

[0031] The collection tank 10 is equipped with a filter screen 28, which can further filter the fine mud and sand in the rainwater and prevent the water permeable holes 18 from being blocked. The water permeable holes 18 at the bottom of the connecting plate 9 are inclined towards the outer wall panel 1. The inclination of the water permeable holes 18 towards the outer wall panel 1 allows the rainwater to flow more closely to the outer wall of the outer wall panel 1, reducing the loss of rainwater due to wind and improving the evaporative cooling efficiency.

[0032] Regarding material selection: the housing 14 is made of polyvinyl chloride, which has good corrosion resistance and mechanical strength; the telescopic rod 15 is made of polypropylene, which has a high coefficient of thermal expansion and is sensitive to temperature changes, making it suitable as a temperature-sensing drive element; the heat-conducting rod 16 is made of copper-nickel alloy, which has excellent thermal conductivity and weather resistance, and can quickly transfer external temperature changes to the inner cavity of the housing 14, ensuring that the telescopic rod 15 responds in a timely manner.

[0033] A material inlet 29, which communicates with the water guide hole 17, is provided on the side of the connecting plate 9 away from the outer wall panel 1. A baffle 30 is detachably connected to the material inlet 29. When it is necessary to clean the mud and sand accumulated inside the connecting plate 9 or replace parts such as the moving plate 12, it is only necessary to remove the baffle 30 and operate through the material inlet 29 without disassembling the entire connecting plate 9, which greatly facilitates later maintenance.

[0034] The insulation unit 3 includes an installation frame 31, hollow bricks 32 embedded in the installation frame 31, and a graphite polystyrene board 33 fixed to the inner side of the hollow bricks 32 facing the outer wall panel 1 or the inner wall panel 2. The hollow bricks 32 contain a large number of closed pores and have low thermal conductivity, making them the main insulation zone. The graphite polystyrene board 33 has an even lower thermal conductivity and is embedded in the pre-set grooves 34 on the inner side of the outer wall panel 1 and the inner wall panel 2, forming a continuous and uninterrupted insulation layer. This effectively prevents heat from being directly transferred through the wall panels. Adjacent installation frames 31 are connected by hexagonal self-drilling screws and are equipped with insulation gaskets. The insulation gaskets can be made of materials such as silicone or polyurethane, which can block the thermal bridges caused by direct contact between the metal screws and the frames, preventing heat from being transferred along the frames, thereby ensuring uniform insulation performance throughout the insulation zone.

[0035] The mounting frame 31 has a connecting groove 36 inside, and at least two symmetrical through holes 35 on its surface. The through holes 35 are interconnected with the connecting groove 36. A heat-conducting core 20 is installed inside the connecting groove 36. Both ends of the heat-conducting core 20 pass through the through holes 35 and face the inside of the outer wall panel 1. The thermal conductivity of the heat-conducting core 20 is greater than that of the mounting frame 31. The principle of this design is that in extreme high or low temperature environments, local overheating or undercooling points may occur inside the wall (for example, the temperature is higher near the outer wall panel 1 and lower near the inner wall panel 1). (2. The temperature is lower on one side) The heat-conducting core 20 can quickly "draw" the heat from the outer wall panel 1 side to the inner wall panel 2 side, or transfer the cold energy from the inner wall panel 2 side to the outer wall panel 1 side, thereby balancing the temperature distribution inside the wall and avoiding thermal stress concentration or local condensation caused by obvious temperature gradients. At the same time, since the thermal conductivity of the heat-conducting core 20 is much higher than that of the mounting frame 31, the heat will preferentially be transferred along the heat-conducting core 20 instead of spreading laterally along the frame. This ensures heat insulation while achieving directional heat dissipation, further improving the thermal performance of the wall.

[0036] This invention also provides a construction method for low-energy building exterior walls, comprising the following steps, all of which can be completed using conventional equipment, materials, and processes used in existing building construction: S1: Install the base plate, side plates, outer wall panel 1 and inner wall panel 2, and fix the basic structure of the collection area. According to the architectural design drawings, the base plate, side plates, outer wall panel 1 and inner wall panel 2 are installed by hoisting or masonry, ensuring that they are parallel and the spacing meets the design requirements. The tank body 4 is fixedly connected between the base plate, side plates, outer wall panel 1 and inner wall panel 2 using expansion bolts or pre-embedded connectors, so that the tank body 4 is horizontal and the bottom is reserved with a water supply pipe 7 interface. The top plate 5 is fixedly installed above the tank body 4. The top surface of the top plate 5 is processed into an arc shape, and several filter holes 6 are opened using drilling equipment to ensure that the top plate 5 is sealed to the outer wall panel 1 and inner wall panel 2. Construction sealant or cement mortar can be used to fill the gaps.

[0037] S2: Install water supply pipeline A hole is made at the lowest point of the bottom of the tank 4, and a water supply pipe 7 is installed. PVC water supply pipe or galvanized steel pipe can be used. The water supply pipe 7 is laid along the inner side of the outer wall panel 1, and its outlet extends to the outside through the pre-set hole on the bottom side of the outer wall panel 1. A standard faucet 8 interface is reserved. The gap between the pipe opening and the outer wall panel 1 is filled with sealant or foaming agent to prevent leakage.

[0038] S3: Fill insulation unit 3 to form an insulation zone. Each insulation unit 3 is assembled using a prefabrication method: Hollow bricks 32 are laid in the installation frame 31 using a staggered masonry process. The cement mortar strength is not less than M5 to ensure a dense masonry. After the mortar has cured, graphite polystyrene boards 33 are fixed on both sides of the hollow bricks 32 facing the outer wall panel 1 and the inner wall panel 2 using a special adhesive, such as polyurethane adhesive, to ensure that the board surface is flat and free of voids. The assembled insulation unit 3 is pushed into the space enclosed by the groove 4, the outer wall panel 1, and the inner wall panel 2 from one side. When pushing it in, ensure that the graphite polystyrene board 33 is accurately embedded in the pre-cut grooves 34 on the inner side of the outer wall panel 1 and the inner wall panel 2 to achieve a tight fit. Adjacent installation frames 31 are connected using hexagonal self-drilling nails, and insulation gaskets with a thickness of 2-5mm are inserted at the frame joints. If there are any remaining gaps, insulation boards of the corresponding size can be cut and filled with expanding foam. Finally, the side panels are installed.

[0039] S4: Install driver components and connection board 9 At a predetermined position on the outer wall of the outer wall panel 1, a double-headed motor 19 is fixed with bolts and a control panel is installed. The power cord of the control panel is connected to the building's low-voltage power supply system. The control signal can be a wired switch or a wireless remote control. The driving rod 21 is connected to the two output ends of the double-headed motor 19 through a coupling. The driven rod 22 is rotatably installed on both sides of the outer wall of the outer wall panel 1 through bearing seats. A gear set 23 that meshes with each other is installed between the driving rod 21 and the driven rod 22. A bevel gear can be used to achieve 90° transmission or a spur gear parallel transmission. Connecting blocks 24 at both ends of connecting plate 9 are threaded into driven rods 22 on both sides. Connecting blocks 24 are machined with internal threads that match the external threads of driven rods 22. Then, protective shell 25 is installed to cover the dual-head motor 19, driving rod 21, and driven rod 22. Moving groove 26 is reserved on protective shell 25 so that connecting blocks 24 can extend out of moving groove 26. Elastic net 27 is installed between the bottom of connecting blocks 24 and the bottom side wall of moving groove 26. Elastic net 27 can be made of weather-resistant rubber mesh or spring net and fixed with buckles or adhesive.

[0040] S5: Automatic water control components inside assembly connecting plate 9 The following assembly is performed in advance inside the connecting plate 9: the movable plate 12 is slidably installed in the mounting groove 11 of the connecting plate 9, and a sealing strip, such as a rubber sealing strip, can be provided between the movable plate 12 and the mounting groove 11 to reduce friction and prevent water leakage; Preparation of connecting rod 13: The housing 14 is made of polyvinyl chloride tubing, and a telescopic rod 15 made of polypropylene material is installed inside. One end of the telescopic rod 15 is fixed to the inner wall of the housing 14 by adhesive or snap ring, and the other end is connected to the side wall of the movable plate 12 by thread or snap connection. One end of the heat-conducting rod 16 is fixedly connected to the housing 14 by welding or screwing, and the other end passes through the side wall of the connecting plate 9 and extends to the outside. The extended end can be coated with a black heat-absorbing coating to enhance the temperature sensing effect. The penetration point between the heat-conducting rod 16 and the connecting plate 9 can be coated with a waterproof adhesive to prevent rainwater from seeping in. Adjust the position of the movable plate 12 so that it abuts against the end face of the housing 14 in its natural state (20℃±5℃). At this time, the water guide hole 17 on the movable plate 12 is completely misaligned with the water permeable hole 18 on the connecting plate 9. Precise positioning can be achieved by setting a limit block or adjusting screw in the mounting groove 11, or by adjusting the length of the movable plate 12 and the width of the mounting groove 11 so that when the part of the movable plate 12 away from the heat conduction rod 16 abuts against the mounting groove 11, the water guide hole 17 on the movable plate 12 and the water permeable hole 18 on the connecting plate 9 are interconnected. A material outlet 29 is opened on the side of the connecting plate 9 away from the outer wall panel 1, and a detachable baffle 30 is installed and fixed with buckles or screws, with a sealing gasket added at the joint. Install a stainless steel filter screen 28 on the bottom surface of the connecting plate 9, and ensure that the water permeable hole 18 is tilted 5° to 10° towards the outer wall plate 1 to facilitate water flow against the wall.

[0041] S6: Debugging and Acceptance After completing all installations, perform a functional test: Inject an appropriate amount of clean water into the collection tank 10 and check that there is no leakage in the water permeable hole 18 at room temperature. The water guide hole 17 and the water permeable hole 18 are completely offset. Heat the exposed end of the heat-conducting rod 16 evenly to above 40°C using a hot air gun or hair dryer. Observe the telescopic rod 15 gradually expanding, pushing the moving plate 12 to move. The water guide hole 17 and the water permeable hole 18 gradually become connected, and water flows out. After stopping the heating and cooling to room temperature, the moving plate 12 should automatically reset and the water permeable hole 18 should close. Operate the dual-head motor 19 through the control panel to check whether the connecting plate 9 rises and falls smoothly without jamming, and whether the elastic net 27 is intact. Check that all sealing areas are leak-free and that all components are securely fastened. Clean up the site debris, organize the construction records, and complete the acceptance inspection.

[0042] By utilizing the above construction methods and taking advantage of existing mature building materials, masonry techniques, electromechanical installation, and the thermal expansion characteristics of materials, a low-energy building exterior wall can be constructed that achieves intelligent cooling and efficient heat insulation without requiring active energy consumption.

[0043] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A low-energy building exterior wall, comprising a base plate, side plates, an exterior wall panel (1), and an interior wall panel (2), characterized in that: A collection area and a heat insulation area are formed between the bottom plate, side plate, outer wall panel (1) and inner wall panel (2). The heat insulation area is composed of several heat insulation units (3). The collection area includes a trough (4) and a top plate (5) fixedly connected between the bottom plate, side plate, outer wall panel (1) and inner wall panel (2). Several heat insulation units (3) are filled in the space enclosed by the trough (4), outer wall panel (1) and inner wall panel (2). The top plate (5) is located above the trough (4) and the top surface of the top plate (5) is arc-shaped. Several filter holes (6) are opened on the top plate (5). A water supply pipe (7) is provided at the bottom of the trough (4). The water outlet of the water supply pipe (7) passes through the bottom side of the outer wall panel (1) to the outside and is connected to a faucet (8). A connecting plate (9) is provided on the outer wall of the outer wall panel (1). A collection trough (10) is opened on the top of the connecting plate (9). The interior of the device is provided with an installation groove (11), and a movable plate (12) is slidably connected in the installation groove (11). The movable plate (12) is connected to the inner wall of the installation groove (11) through a connecting rod (13). The connecting rod (13) includes a housing (14) and a telescopic rod (15) made of expansion material installed in the housing (14). The telescopic rod (15) is connected to the side wall of the movable plate (12), and in its natural state, the movable plate (12) abuts against the housing (14). A heat-conducting rod (16) is fixedly connected to the telescopic rod (15). The heat-conducting rod (16) passes through the connecting plate (9) to the outside. The movable plate (12) is provided with several water guide holes (17), and the connecting plate (9) is provided with several water permeable holes (18). When the movable plate (12) abuts against the housing (14), the water guide holes (17) and the water permeable holes (18) are staggered.

2. The low-energy building exterior wall according to claim 1, characterized in that: The outer wall of the outer wall panel (1) is provided with a drive assembly that drives the connecting plate (9) to slide along the outer wall of the outer wall panel (1). The drive assembly includes a double-head motor (19) installed on the outer wall of the outer wall panel (1) and a control panel for controlling the operation of the double-head motor (19). The two output ends of the double-head motor (19) are fixedly connected to the drive rod (21). The two sides of the outer wall of the outer wall panel (1) are rotatably connected to the driven rod (22). The drive rod (21) and the driven rod (22) are mutually driven through a gear set (23). The two ends of the connecting plate (9) are fixedly connected to the connecting block (24). The driven rod (22) is threadedly connected to the connecting block (24).

3. The low-energy building exterior wall according to claim 2, characterized in that: The dual-head motor (19), the driving rod (21), and the driven rod (22) are all provided with protective shells (25). The outer wall of the protective shells (25) located on the driving rod (21) and the driven rod (22) is provided with a moving groove (26). The connecting block (24) is slidably connected in the moving groove (26), and its bottom is connected to the bottom side wall of the moving groove (26) through an elastic net (27).

4. The low-energy building exterior wall according to claim 1, characterized in that: A filter screen (28) is provided on the collection tank (10), and the water permeable hole (18) at the bottom of the connecting plate (9) is inclined toward the side of the outer wall panel (1).

5. The low-energy building exterior wall according to claim 1, characterized in that: The housing (14) is made of polyvinyl chloride, the telescopic rod (15) is made of polypropylene, and the heat-conducting rod (16) is made of copper-nickel alloy.

6. The low-energy building exterior wall according to claim 1, characterized in that: The connecting plate (9) is provided with a material inlet (29) on the side away from the outer wall panel (1) that communicates with the water guide hole (17), and a baffle (30) is detachably connected to the material inlet (29).

7. A low-energy building exterior wall according to claim 1, characterized in that: The heat insulation unit (3) includes an installation frame (31), hollow bricks (32) embedded in the installation frame (31), and a graphite polystyrene board (33) fixed on the hollow bricks (32) facing the inner side of the outer wall panel (1) or the inner wall panel (2). The inner side of the outer wall panel (1) and the inner wall panel (2) is provided with a groove (34) for the installation of the graphite polystyrene board (33). The two adjacent installation frames (31) are connected by hexagonal drill tail screws and are provided with heat insulation pads.

8. A low-energy building exterior wall according to claim 7, characterized in that: The mounting frame (31) has a connecting groove (36) inside. The surface of the mounting frame (31) has at least two symmetrical through holes (35). The through holes (35) are connected to the connecting groove (36). A heat-conducting core (20) is provided in the connecting groove (36). Both ends of the heat-conducting core (20) pass through the through holes (35) and face the inside of the outer wall panel (1). The thermal conductivity of the heat-conducting core (20) is greater than that of the mounting frame (31).

9. A construction method for a low-energy building exterior wall as described in any one of claims 1-8, characterized in that: Includes the following steps: S1: Install the outer wall panel (1) and the inner wall panel (2), and fix the connecting trough (4) between them. Fix the top plate (5) above the trough (4) so ​​that the top surface of the top plate (5) is arc-shaped and has several filter holes (6). S2: Install a water supply pipe (7) at the bottom of the tank (4), and pass the water outlet of the water supply pipe (7) through the outer wall panel (1) to the outside, and reserve a faucet (8) interface; S3: Install a base plate between the bottom ends of the outer wall panel (1) and the inner wall panel (2), and then fill several heat insulation units (3) in sequence in the space enclosed by the groove (4), the outer wall panel (1) and the inner wall panel (2) to form a heat insulation area, and then install the side panel; S4: Install the drive assembly on the outer wall of the outer wall panel (1) and install the connecting plate (9) on the drive assembly so that the connecting plate (9) can slide along the outer wall of the outer wall panel (1); S5: Pre-assemble the movable plate (12), connecting rod (13) and heat-conducting rod (16) inside the connecting plate (9): Slide the movable plate (12) into the mounting groove (11) of the connecting plate (9), and connect the movable plate (12) to the inner wall of the mounting groove (11) through the connecting rod (13). The connecting rod (13) includes a housing (14) and a telescopic rod (15) made of expansion material inside the housing (14), so that the telescopic rod (15) is connected to the side wall of the movable plate (12), and the telescopic rod (15) makes the movable plate (12) abut against the housing (14) in its natural state; then fix the heat-conducting rod (16) to the housing (14) and make the heat-conducting rod (16) penetrate to the outside of the connecting plate (9); S6: Adjust the position of the movable plate (12) so that when the movable plate (12) abuts against the housing (14), the water guide hole (17) on the movable plate (12) and the water permeable hole (18) on the connecting plate (9) are staggered.

10. A construction method for a low-energy building exterior wall according to claim 9, characterized in that: In step S3, the filling method of each heat insulation unit (3) is as follows: first, hollow bricks (32) are built in the installation frame (31), and then graphite polystyrene board (33) is fixed on the inner side of the hollow bricks (32) facing the outer wall panel (1) and the inner wall panel (2); then, the two adjacent installation frames (31) are connected by hexagonal drill tail screws and heat insulation pads are inserted; finally, the installation frame (31) is pushed into the heat insulation area so that the graphite polystyrene board (33) is embedded in the groove (34) on the inner side of the outer wall panel (1) and the inner wall panel (2) respectively.

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