Green energy-saving building and construction method thereof
By installing grille louvers, cleaning components, wind energy components and pumping liquid components on the outer wall of the building, and using wind energy to drive automatic cleaning and water pumping, the problem of high cost of cleaning and care for existing buildings is solved, and energy conservation and emission reduction and improvement of building aesthetics is achieved.
Patent Information
- Application Number
- CN202510296787.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2045-03-13
AI Technical Summary
Existing buildings fail to effectively utilize nature’s wind energy, and while utilizing rainwater and solar energy, the cost and energy consumption of building exterior walls have increased.
A green and energy-saving building is designed, including grille-type louvers, cleaning components, wind energy components and pump fluid components located on the outer side wall of the building. Grille blinds use the specific heat capacity of water to reduce air conditioning energy consumption. The cleaning components are automatically cleaned by the wind energy component, and the pump liquid components use wind energy to pump water to clean the building surface.
It effectively utilizes the wind energy of nature, reduces the energy consumption during building cleaning and air conditioning, improves the aesthetics of the building, and avoids the problems of water overflow and odor in the water tank.
Smart Images

Figure CN120042274A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of energy-saving buildings, and particularly relates to a green energy-saving building and a construction method thereof. Background Art
[0002] At present, the building energy consumption in China is huge, the energy-saving efficiency is low, and the impact on the environment is huge. At present, the water and electricity inside buildings are mainly supplied by the commercial power and tap water of the distribution network, and air-conditioning units are generally used for heating and cooling, without reasonably utilizing free clean energy sources such as natural water sources, sunlight, wind energy, and rainwater.
[0003] In order to solve the problem that existing buildings do not reasonably utilize free clean energy from nature, Chinese Patent Publication No. "CN111456221B" proposes a green energy-saving building and a construction method thereof, which mainly designs grid-type louvers installed on the outer wall of the building, and utilizes the characteristic of high specific heat capacity of water to reduce the power consumption of indoor air-conditioning for heating and cooling, thereby achieving the effect of energy conservation and emission reduction. However, in this solution, mainly rainwater and solar energy in nature are utilized, and the relatively rich wind energy in nature is not utilized. Moreover, since grid-type louvers are installed on the outer wall of the building, the outer wall area of the building is cut into smaller area modules, which means that if the outer wall of the building needs to be cleaned and cared for, due to the relatively narrow operable space, the manpower, material resources and energy consumption required will increase significantly accordingly. Summary of the Invention
[0004] The purpose of the present invention is to solve the defects existing in the prior art, and to propose a green energy-saving building and a construction method thereof.
[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0006] A green energy-saving building includes grid-type louvers, a cleaning component, a wind energy component and a liquid pumping component arranged on the outer wall of the building.
[0007] The grid-type louver is composed of a plurality of frames and blades. The frames and the blades are hollow inside and store water. A spray nozzle is arranged at the lower end of each blade, and a pressure valve is installed in each spray nozzle. A water storage tank is arranged on the top of the building, and the water storage tank is used to supplement or replace the water in the frames and the blades.
[0008] The cleaning component includes a plurality of mutually fixed cleaning frames, cleaning brushes and bending rods, and is used for brushing and cleaning the outer wall curtain wall of the building. The plurality of cleaning components are staggered and distributed between the plurality of blades.
[0009] The wind energy components include two groups. Each group of wind energy components consists of a first wind wheel, and a first bevel gear and a second bevel gear that mesh with each other, and are used to convert wind energy into mechanical energy required for the operation of the cleaning components. The first wind wheel is fixedly installed on the top of the building through a first vertical plate. The first bevel gear is fixedly connected coaxially with the first wind wheel. The second bevel gear is rotationally connected to the top of the building through a coupling shaft;
[0010] The liquid pumping component consists of a second wind wheel, a liquid pumping tank and a liquid pumping wheel, and is used to convert wind energy into mechanical energy required for liquid pumping. The second wind wheel is fixedly installed on the top of the building through a second vertical plate. The liquid pumping wheel is rotationally connected to the inner wall of the liquid pumping tank and is synchronously rotated through a transmission belt connected to the second wind wheel;
[0011] The cleaning component is connected to the wind energy component through a pushing mechanism. A stabilizing mechanism is installed on one side of the frame far from the pushing mechanism. The liquid pumping component is connected to the grid-type louver through a liquid pumping mechanism.
[0012] Preferably, the pushing mechanism includes a reciprocating lead screw and a lead screw nut. The reciprocating lead screw is rotationally connected between each pair of frames through a cross plate and is fixedly connected to the coupling shaft. The lead screw nut is threadedly connected to the lead screw, and the lead screw nut is also fixedly connected to the fixed frame close to the reciprocating lead screw through a bent rod.
[0013] Preferably, the stabilizing mechanism includes a stabilizing vertical rod and a stabilizing sliding sleeve. The stabilizing vertical rod is fixedly connected between each pair of frames through a cross plate. The stabilizing sliding sleeve is slidably connected to the stabilizing vertical rod, and the stabilizing sliding sleeve is also fixedly connected to the fixed frame close to the stabilizing vertical rod through a bent rod.
[0014] Preferably, the liquid pumping mechanism includes a sliding plug, an inlet pipe and an outlet pipe. The sliding plug is slidably connected between the inner walls of the liquid pumping tank and is connected to the liquid pumping wheel through a connecting rod. Both ends of the connecting rod are rotationally connected to the liquid pumping wheel and the sliding plug respectively. The inlet pipe is communicated between the liquid pumping tank and the water storage tank. The outlet pipe is communicated between the liquid pumping tank and the frame.
[0015] Preferably, a one-way valve that only allows liquid to flow from the water storage tank to the liquid pumping tank is installed in the inlet pipe, and a one-way valve that only allows liquid to flow from the liquid pumping tank to the frame is installed in the outlet pipe.
[0016] A construction method of a green energy-saving building as described above includes the following steps:
[0017] S1. Horizontally install frames at various uniform height positions on the outer wall of the building, uniformly distribute and connect multiple blades between the frames, and build a water storage tank on the top of the building;
[0018] S2. Install the first wind wheel on both sides at the top of the building, fix the coupling at the first wind wheel, and install the meshing first bevel gear and second bevel gear.
[0019] S3. Install the lead screw nuts and stable sliding sleeves on the reciprocating lead screw and the stable vertical rod respectively. Install the reciprocating lead screw and the stable vertical rod between each pair of side frames on both sides of the building, and fix the reciprocating lead screw to the coupling.
[0020] S4. Fix each cleaning brush to each cleaning frame respectively. Fix each cleaning frame through the bending rod in turn from one side of the reciprocating lead screw to the side of the stable vertical rod, so that they are staggered with the blades.
[0021] S5. Install the second wind wheel and the liquid pumping tank in the middle position at the top of the building. Install a transmission belt between the second wind wheel and the liquid pumping wheel. Connect and install an inlet pipe between the liquid pumping tank and the water storage tank, and connect and install an outlet pipe between the liquid pumping tank and the side frame.
[0022] The present invention has the following beneficial effects:
[0023] 1. First, it retains the technical effect of the prior art comparison document that the green building utilizes the characteristics of rainwater and the large specific heat capacity of water to save air conditioning energy consumption. Secondly, by setting the cleaning component and the driving mechanism, the rotation of the reciprocating lead screw can drive each lead screw nut to move vertically back and forth, thereby driving the cleaning frame to move up and down reciprocally, and then enabling each cleaning brush to clean and scrub the side wall of the building curtain wall, playing a good cleaning role without wasting labor costs.
[0024] 2. By setting the liquid pumping component and the liquid pumping mechanism, the rainwater stored in the water storage tank can be pumped into each blade. And when the water continues to be pumped into each blade after it is full, the pressure valve is opened when the pressure it receives reaches the critical value, and the water sprays out from the spray nozzle and sprinkles on the side wall of the building curtain wall. Cooperating with the scrubbing action of the cleaning brush, it can achieve a better cleaning effect, thereby enhancing the overall beauty of the building.
[0025] 3. By setting the first wind wheel and the second wind wheel, the abundant wind energy at a high place of the building is effectively converted into mechanical energy, providing power for the actions of the cleaning component and the liquid pumping component. Combined with the structure of the green building in the comparison document, it thus makes great use of the free natural energy of nature and reduces the energy consumption during building cleaning and air conditioning use.
[0026] 4. The liquid pumping component can continuously consume the accumulated water in the water storage tank, which can not only effectively avoid the risk of water overflow in the water storage tank and causing building leakage, but also effectively solve the problem that the water in the water storage tank will produce peculiar smell and rot after being stored for a long time. Description of the Drawings
[0027] Figure 1Schematic structural diagram of a green energy-saving building proposed by the present invention;
[0028] Figure 2 Schematic structural diagram of the cleaning component and the driving mechanism proposed by the present invention;
[0029] Figure 3 Schematic structural diagram of the wind energy component proposed by the present invention;
[0030] Figure 4 Schematic structural diagram of the grid-type louver proposed by the present invention;
[0031] Figure 5 Schematic structural diagram of the liquid pumping component and the liquid pumping mechanism proposed by the present invention;
[0032] Figure 6 Schematic connection structure diagram of the second wind wheel, the transmission belt, the liquid pumping wheel and the sliding plug proposed by the present invention.
[0033] In the figure: 1, frame; 2, blade; 3, water storage tank; 4, horizontal plate; 5, reciprocating lead screw; 6, lead screw nut; 7, cleaning component; 701, cleaning frame; 702, cleaning brush; 703, bent rod; 8, wind energy component; 801, first vertical plate; 802, first wind wheel; 803, first bevel gear; 804, second bevel gear; 805, coupling; 9, liquid pumping component; 901, second vertical plate; 902, second wind wheel; 903, transmission belt; 904, liquid pumping tank; 905, sliding plug; 906, liquid pumping wheel; 907, connecting rod; 908, liquid inlet pipe; 909, liquid outlet pipe; 10, stabilizing mechanism; 1001, stabilizing vertical rod; 1002, stabilizing sliding sleeve; 11, spray nozzle. Detailed implementation manners
[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.
[0035] Embodiment 1:
[0036] Refer to Figures 1-6 , a green energy-saving building, including a grid-type louver, a cleaning component 7 and a wind energy component 8 provided on the outer wall of the building. The grid-type louver is composed of a plurality of frames 1 and blades 2. The frames 1 and the blades 2 are hollow inside and store water. A spray nozzle 11 is provided at the lower end of each blade 2, and a pressure valve is installed in each spray nozzle 11. A water storage tank 3 is provided on the top of the building, and the water storage tank 3 is used to supplement or replace the water in the frames 1 and the blades 2;
[0037] The cleaning assembly 7 is composed of a plurality of mutually fixed cleaning frames 701, cleaning brushes 702 and bending rods 703, and is used for scrubbing and cleaning the outer wall curtain wall of a building. A plurality of cleaning assemblies 7 are staggered and distributed between a plurality of blades 2;
[0038] The wind energy assembly 8 includes two groups. Each group of the wind energy assembly 8 is composed of a first wind wheel 802, and a first bevel gear 803 and a second bevel gear 804 that mesh with each other, and is used for converting wind energy into mechanical energy required for the operation of the cleaning assembly 7. The first wind wheel 802 is fixedly installed on the top of the building through a first vertical plate 801. The first bevel gear 803 is coaxially and fixedly connected to the first wind wheel 802. The second bevel gear 804 is rotationally connected to the top of the building through a coupling 805. The cleaning assembly 7 is connected to the wind energy assembly 8 through a pushing mechanism.
[0039] The pushing mechanism includes a reciprocating lead screw 5 and a lead screw nut 6. The reciprocating lead screw 5 is rotationally connected between each pair of side frames 1 through a cross plate 4 and is fixedly connected to the coupling 805. The lead screw nut 6 is threadedly connected to the lead screw 5, and the lead screw nut 6 is also fixedly connected to the fixed frame 701 close to the reciprocating lead screw 5 through a bending rod 703.
[0040] In this embodiment, when the wind force is large and the air flow blows through the first wind wheel 802, the first wind wheel 802 starts to rotate, thereby driving the first bevel gear 803 to rotate. The first bevel gear 803 meshes with the second bevel gear 804 to rotate, thereby driving the reciprocating lead screw 5 to rotate through the coupling 805. The rotation of the reciprocating lead screw 5 will cause the lead screw nut 6 to perform a vertical reciprocating motion. Furthermore, under the connection action of the bending rod 703, the cleaning frame 701 and the cleaning brush 702 start to reciprocate up and down to scrub the building curtain wall, thereby playing the role of automatically cleaning the building curtain wall without wasting labor costs.
[0041] Embodiment Two:
[0042] Different from Embodiment One, referring to Figures 1-6 , this embodiment also has the following further content:
[0043] On one side of the side frame 1 far from the pushing mechanism, a stabilizing mechanism 10 is installed. The stabilizing mechanism 10 includes a stabilizing vertical rod 1001 and a stabilizing sliding sleeve 1002. The stabilizing vertical rod 1001 is fixedly connected between each pair of side frames 1 through a cross plate 4. The stabilizing sliding sleeve 1002 is slidably connected to the stabilizing vertical rod 1001, and the stabilizing sliding sleeve 1002 is also fixedly connected to the fixed frame 701 close to the stabilizing vertical rod 1001 through a bending rod 703.
[0044] In this embodiment, when the cleaning frame 701 and the cleaning brush 702 move vertically back and forth along with the lead screw nut 6, the stable vertical rod 1001 and the stable sleeve 1002 provide corresponding lateral supporting forces for the cleaning assembly 7 on the side away from the reciprocating lead screw 5, thereby ensuring the stability of the cleaning assembly 7 during operation, avoiding the situation that the cleaning assembly 7 shakes during operation after long-term work, and reducing the noise and danger during work.
[0045] Embodiment Three:
[0046] Compared with Embodiment One and Embodiment Two, this embodiment further includes a liquid pumping assembly 9. The liquid pumping assembly 9 is composed of a second wind wheel 902, a liquid pumping tank 904, and a liquid pumping wheel 906, and is used to convert wind energy into mechanical energy required for liquid pumping action. The second wind wheel 902 is fixedly installed on the top of the building through a second vertical plate 901. The liquid pumping wheel 906 is rotatably connected to the inner wall of the liquid pumping tank 904 and is connected to the second wind wheel 902 through a transmission belt 903 to rotate synchronously. The liquid pumping assembly 9 is connected to the grid-type louver through a liquid pumping mechanism.
[0047] The liquid pumping mechanism includes a sliding plug 905, a liquid inlet pipe 908, and a liquid outlet pipe 909. The sliding plug 905 is slidably connected between the inner walls of the liquid pumping tank 904 and is connected to the liquid pumping wheel 906 through a connecting rod 907. Both ends of the connecting rod 907 are rotatably connected to the liquid pumping wheel 906 and the sliding plug 905 respectively. The liquid inlet pipe 908 is communicatively arranged between the liquid pumping tank 904 and the water storage tank 3, and the liquid outlet pipe 909 is communicatively arranged between the liquid pumping tank 904 and the frame 1.
[0048] A one-way valve that only allows liquid to flow from the water storage tank 3 to the liquid pumping tank 904 is installed in the liquid inlet pipe 908, and a one-way valve that only allows liquid to flow from the liquid pumping tank 904 to the frame 1 is installed in the liquid outlet pipe 909.
[0049] In this embodiment, rainwater falls and is stored in the water storage tank 3. When the wind force is large and the airflow blows through the second wind wheel 902, the second wind wheel 902 starts to rotate. The second wind wheel 902 drives the liquid pumping wheel 906 to rotate synchronously through the transmission of the transmission belt 903. The rotation of the liquid pumping wheel 906 pushes the sliding plug 905 to move horizontally back and forth through the connecting rod 907. When the sliding plug 905 slides to the left, the liquid pumping tank 904 sucks the water body in the water storage tank 3 through the liquid inlet pipe 908. When the sliding plug 905 slides to the right, the liquid pumping tank 904 pumps the water body into each blade 2 through the liquid outlet pipe 909, so that each blade 2 is filled with water. At this time, due to the large specific heat capacity of water, it can play a good role in regulating the indoor temperature in both cold and hot weather, so the air-conditioning energy consumption can be effectively reduced. For the details of this effect and working principle, reference can be made to the comparative document mentioned in the background technology of this application.
[0050] When the second wind wheel 902 continues to rotate and continuously pumps water into each blade 2, as the water continues to be pumped in, the pressure value received by the pressure valve in the spray nozzle 11 greatly exceeds the critical value, the pressure valve opens, and the water jets out from the spray nozzle 11 and sprinkles on the surface of the building curtain wall. Cooperating with the scrubbing effect of the cleaning component 7 in the first embodiment, a better cleaning effect can be achieved, thereby enhancing the overall aesthetics of the building.
[0051] Under the continuous action of the liquid pumping component 9, the accumulated water in the water storage tank 3 is effectively consumed. It can not only effectively avoid the risk of water overflowing from the water storage tank and causing building leakage, but also effectively solve the problem of peculiar smell and putrefaction generated after the water in the water storage tank is stored for a long time.
[0052] The present invention also proposes a construction method of a green energy-saving building in the above embodiment, including the following steps:
[0053] S1. Horizontally install the frame 1 at each uniform height position on the outer wall of the building, evenly distribute and connect multiple blades 2 between the frames 1, and build a water storage tank 3 on the top of the building;
[0054] S2. Install the first wind wheel 802 at both sides of the top of the building, fix the coupling 805 at the first wind wheel 802, and install the first bevel gear 803 and the second bevel gear 804 that mesh with each other;
[0055] S3. Install the lead screw nut 6 and the stable sliding sleeve 1002 on the reciprocating lead screw 5 and the stable vertical rod 1001 respectively, install the reciprocating lead screw 5 and the stable vertical rod 1001 between each pair of frames 1 on both sides of the building, and fix the reciprocating lead screw 5 and the coupling 805;
[0056] S4. Fix each cleaning brush 702 on each cleaning frame 701 respectively, and sequentially fix each cleaning frame 701 from one side of the reciprocating lead screw 5 to the side of the stable vertical rod 1001 through the bending rod 703, so that it is staggered with the blade 2;
[0057] S5. Install the second wind wheel 902 and the liquid pumping tank 904 at the middle position of the top of the building, install the transmission belt 903 between the second wind wheel 902 and the liquid pumping wheel 906, connect and install the liquid inlet pipe 908 between the liquid pumping tank 904 and the water storage tank 3, and connect and install the liquid outlet pipe 909 between the liquid pumping tank 904 and the frame 1.
[0058] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.
Claims
1. A green energy-saving building, comprising a grille-type louver arranged on the outer wall of the building, a cleaning component (7), a wind energy component (8) and a pump liquid component (9), characterized in that: The grille-type louver is composed of a plurality of frames (1) and blades (2); the frames (1) and blades (2) are hollow inside and store water; a spray nozzle (11) is provided at the lower end of each blade (2), and a pressure valve is installed in each spray nozzle (11); a water reservoir (3) is provided at the top of the building, and the water reservoir (3) is used to replenish or replace the water in the frames (1) and blades (2); The cleaning assembly (7) comprises a plurality of mutually fixed cleaning frames (701), cleaning brushes (702) and bending rods (703), and is used for brushing and cleaning the outer wall curtain wall of a building, wherein the plurality of cleaning assemblies (7) are staggeredly distributed between the plurality of blades (2); The wind energy assembly (8) comprises two groups, each group of the wind energy assembly (8) comprises a first wind wheel (802), and a first bevel gear (803) and a second bevel gear (804) meshing with each other, and is used to convert wind energy into mechanical energy required for the operation of the cleaning assembly (7); the first wind wheel (802) is fixedly mounted on the top of the building via a first vertical plate (801); the first bevel gear (803) and the first wind wheel (802) are coaxially fixedly connected; and the second bevel gear (804) is rotationally connected to the top of the building via a coupling (805); The pumping assembly (9) is composed of a No. 2 wind wheel (902), a pumping tank (904) and a pumping wheel (906), and is used to convert wind energy into mechanical energy required for pumping action. The No. 2 wind wheel (902) is fixedly installed on the top of the building through a No. 2 vertical plate (901), and the pumping wheel (906) is rotatably connected to the inner wall of the pumping tank (904) and is connected to the No. 2 wind wheel (902) through a transmission belt (903) to rotate synchronously; The cleaning component (7) is connected to the wind energy component (8) via a driving mechanism, a stabilizing mechanism (10) is installed on the side of the frame (1) away from the driving mechanism, and the pumping component (9) is connected to the grille-type louver via the pumping mechanism.
2. A green energy-saving building according to claim 1, characterized in that: The pushing mechanism comprises a reciprocating screw (5) and a screw nut (6); the reciprocating screw (5) is rotatably connected between each pair of frame frames (1) via a transverse plate (4) and is fixedly connected to a coupling shaft (805); the screw nut (6) is threadedly connected to the screw nut (5); and the screw nut (6) is also fixedly connected to a fixed frame (701) close to the reciprocating screw (5) via a bent rod (703).
3. A green energy-saving building according to claim 1, characterized in that: The stabilizing mechanism (10) comprises a stabilizing upright pole (1001) and a stabilizing sliding sleeve (1002); the stabilizing upright pole (1001) is fixedly connected between each pair of frame frames (1) via a transverse plate (4); the stabilizing sliding sleeve (1002) is slidably connected to the stabilizing upright pole (1001); and the stabilizing sliding sleeve (1002) is also fixedly connected to a fixed frame (701) close to the stabilizing upright pole (1001) via a bending rod (703).
4. A green energy-saving building according to claim 1, characterized in that: The liquid pumping mechanism comprises a sliding plug (905), a liquid inlet pipe (908) and a liquid outlet pipe (909); the sliding plug (905) is slidably connected between the inner wall of the liquid pumping box (904) and is connected to the liquid pumping wheel (906) via a connecting rod (907); both ends of the connecting rod (907) are rotatably connected to the liquid pumping wheel (906) and the sliding plug (905) respectively; the liquid inlet pipe (908) is arranged in communication between the liquid pumping box (904) and the water storage tank (3); and the liquid outlet pipe (909) is arranged in communication between the liquid pumping box (904) and the frame (1).
5. A green energy-saving building according to claim 4, characterized in that: The liquid inlet pipe (908) is installed with a one-way valve that only allows liquid to flow from the water storage tank (3) to the pump liquid tank (904), and the liquid outlet pipe (909) is installed with a one-way valve that only allows liquid to flow from the pump liquid tank (904) to the frame (1).
6. A construction method for a green energy-saving building according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, horizontally installing frames (1) at uniform height positions on the outer wall of the building, evenly distributing a plurality of blades (2) between the frames (1), and building a water reservoir (3) on the top of the building; S2, installing the No. 1 wind wheel (802) at both sides of the top of the building, fixing the coupling (805) at the No. 1 wind wheel (802), and installing the No. 1 bevel gear (803) and the No. 2 bevel gear (804) that mesh with each other; S3, installing the screw nut (6) and the stabilizing sleeve (1002) on the reciprocating screw (5) and the stabilizing rod (1001) respectively, installing the reciprocating screw (5) and the stabilizing rod (1001) between each pair of frames (1) on both sides of the building, and fixing the reciprocating screw (5) and the coupling shaft (805); S4, fixing each cleaning brush (702) on each cleaning frame (701) respectively, and fixing each cleaning frame (701) in sequence from one side of the reciprocating screw (5) to one side of the stabilizing rod (1001) via the bending rod (703) so that the cleaning frames (701) are staggered with the blades (2); S5. Install the No. 2 wind wheel (902) and the pump liquid box (904) at the middle position of the top of the building, install a transmission belt (903) between the No. 2 wind wheel (902) and the pump liquid wheel (906), install a liquid inlet pipe (908) in communication between the pump liquid box (904) and the water storage tank (3), and install a liquid outlet pipe (909) in communication between the pump liquid box (904) and the frame (1).
Citation Information
Patent Citations
Intelligent building cleaning structure
CN107468145A
Green energy-saving building and construction method thereof
CN111456221A
Adjustable green energy-saving building curtain wall
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Energy-saving ventilation structure of green building
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