A building curtain wall based on energy-saving and sound insulation design

By introducing the design of mounting clips, vertical strip edge seals and sound insulation adjustment air bags into the building curtain wall, combined with the air pressure control system, the problem that existing building curtain walls cannot adjust the sound insulation effect is solved, and the sound insulation effect is adjusted on demand is achieved, which improves the functional adaptability and economic benefits of the curtain wall.

CN116838004BActive Publication Date: 2025-08-12HENAN UNIVERSITY
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Patent Information

Application Number
CN202310962571.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-08-02
Publication Date
2025-08-12
Estimated Expiration
2043-08-02

AI Technical Summary

Technical Problem

After installation, the sound insulation effect cannot be adjusted according to the use needs and cannot meet different environmental and functional needs.

Method used

By setting up mounting clips, vertical strip edge seals and sound insulation adjustment air bags on the curtain wall frame, combined with the air pressure control system, dynamic adjustment of sound insulation effect is achieved, including the design of sound insulation adjustment air bags, quick connection splitters and branch trachea, and combining with the air pressure control unit and noise sensing unit to achieve intelligent control.

Benefits of technology

It realizes on-demand adjustment of the sound insulation effect of building curtain walls, improves the functional adaptability and economic benefits of building curtain walls, and meets different noise environments and usage needs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to a building curtain wall based on energy-saving and sound-insulating design, comprising a curtain wall frame, wherein both left and right ends of the curtain wall frame are fixedly installed with installation clips, the front end of the curtain wall frame is slidably connected with a panel, the rear end of the curtain wall frame is fixedly connected with a back plate, the left and right inner walls of the curtain wall frame are fixedly connected with vertical edge sealing strips, a sound insulation adjustment air bag is fixedly connected between the two vertical edge sealing strips, and the front and rear ends of the sound insulation adjustment air bag respectively form a sound insulation gap with the panel and the back plate, an adjustment air hole is provided on the installation clip, a plurality of quick-connect taps connected with the adjustment air holes are embedded in the installation clip close to the curtain wall frame end, a plurality of branch air pipes inserted into the quick-connect taps are embedded in the vertical edge sealing strip, and the branch air pipes extend into the sound insulation adjustment air bag away from one end of the quick-connect tap. By adopting the above-mentioned installation clips, vertical edge sealing strips and sound insulation adjustment air bag structure, the sound insulation effect can be effectively adjusted according to the actual needs of the building, thereby improving the adaptability of the building curtain wall to usage needs.
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Description

Technical Field

[0001] The present invention relates to a building curtain wall, and in particular to a building curtain wall based on energy-saving and sound-insulating design, which is applied to the field of general building construction. Background Art

[0002] Curtain walls refer to the non-load-bearing exterior walls of a building, typically consisting of panels (glass, metal, stone, ceramic, etc.) and a supporting structure (aluminum beams and columns, steel structures, glass ribs, etc.). However, as people's living standards improve, the demand for building performance is also increasing, requiring curtain walls to provide energy-saving and sound-insulating properties.

[0003] In order to solve the problem of energy-saving and sound-insulating functions of building curtain walls, a certain building curtain wall in the market adopts a design that combines sound-absorbing and heat-insulating structures and materials, and has a certain market share.

[0004] The specification of Chinese invention patent CN202010303723.4 discloses a heat-insulating and sound-insulating building curtain wall system, which includes a frame, a curtain wall panel arranged in the frame, and a cleaning device for cleaning the curtain wall panel; the curtain wall panel includes an inner layer of glass and an outer layer of glass, and a sound insulation layer and a heat insulation layer arranged between the inner layer of glass and the outer layer of glass; it has a reasonable structure, good heat insulation and sound insulation effects, and comes with a built-in cleaning device, which improves cleaning efficiency and reduces the risk of high-altitude operations.

[0005] Although the functional building curtain walls in the existing technology effectively achieve energy-saving and sound insulation effects, the sound insulation effect cannot be changed after installation, and thus cannot meet the functional requirements of current buildings. For example, the building curtain walls used for buildings such as exhibition halls for performances and exhibitions need to have different sound insulation effects depending on the different exhibits in the hall or the changes in the external environmental noise require changes in the sound insulation effect. Therefore, how to achieve the adjustability of the sound insulation effect of energy-saving and sound-insulating building curtain walls is a problem that needs to be solved at present.

[0006] Application Contents

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to adjust the sound insulation performance of the building curtain wall after installation according to different usage requirements.

[0008] To solve the above problems, the present invention provides a building curtain wall based on energy-saving and sound-insulating design, comprising a curtain wall frame, wherein mounting strips are fixedly installed at both left and right ends of the curtain wall frame, a panel is slidably connected to the front end of the curtain wall frame, a rear plate is fixedly connected to the rear end of the curtain wall frame, vertical edge sealing strips are fixedly connected to the left and right inner walls of the curtain wall frame, a sound insulation adjustment air bag is fixedly connected between the two vertical edge sealing strips, and the front and rear ends of the sound insulation adjustment air bag respectively form a sound insulation gap with the panel and the rear plate;

[0009] There are regulating air holes on the installation strip, and a plurality of quick-connect taps connected to the regulating air holes are embedded in the end of the installation strip close to the curtain wall frame. A plurality of branch air pipes inserted into the quick-connect taps are embedded in the vertical edge sealing. The branch air pipes extend into the sound insulation regulating air bag away from the end of the quick-connect tap and cooperate with the sound insulation regulating air bag. A plurality of elastic micropores are provided on the outer end of the sound insulation regulating air bag.

[0010] In the above-mentioned building curtain wall based on energy-saving and sound insulation design, the sound insulation effect is effectively adjusted according to the actual needs of the building, thereby improving the adaptability of the building curtain wall to usage needs.

[0011] As a supplement to this application, the four corners of the front end of the rear panel are fixedly connected with traction support bars, the front end of the traction support bars is fixedly connected to the panel, and the outer end of the traction support bars is wrapped with a protective film cover.

[0012] As a supplement to this application, a sound insulation front membrane is fixedly connected to the rear end of the panel, and a sound insulation rear membrane is fixedly connected to the front end of the rear panel.

[0013] As a supplement to this application, both the front and rear ends of the sound insulation adjustment air bag are fixedly connected with connection strips, and the end of the connection strip away from the sound insulation adjustment air bag is fixedly connected to the panel and back plate at the corresponding positions.

[0014] As a further improvement of the present application, the upper and lower inner walls of the curtain wall frame are fixedly connected with horizontal edge sealing strips, and guide holes that match the traction support strips are opened in the horizontal edge sealing strips, and the guide holes are set at an angle.

[0015] As a further improvement of the present application, quick-connect air heads that match the regulating air holes are embedded at both the upper and lower ends of the mounting clip, and an auxiliary intubation tube is connected inside the quick-connect air head.

[0016] As a further improvement supplement to the present application, the input end of the auxiliary intubation is connected to an air pressure control unit, the input end of the air pressure control unit is connected to a sound insulation adjustment processing unit, the input end of the sound insulation adjustment processing unit is connected to an external noise sensing unit and a sound insulation mode selection unit, the input end of the external noise sensing unit is connected to the sound probe signal set at the outside end of the building, and the input end of the sound insulation mode selection unit is connected to the sound insulation control screen display signal installed in the building.

[0017] As a further improvement and supplement to the present application, the air pressure control unit acts on the auxiliary cannula through an independently arranged air pump device to vent and deflate the control air holes, thereby achieving adjustment of the sound insulation adjustment air bag.

[0018] In summary, by installing card strips, vertical edge sealing and sound insulation adjustment air bags, it is possible to effectively control the ventilation and exhaust of the sound insulation adjustment air bags in all building curtain walls according to the sound insulation needs during the use of the building curtain walls, thereby changing the sound insulation state formed between the panel and the back panel, and then achieving the adaptive demand adjustment of the overall sound insulation effect of the building, thereby improving the functionality of the building curtain wall, so that it has energy-saving and sound insulation effects while also having the function of adjusting the sound insulation effect on demand, thereby promoting the application and economic benefits of the building curtain wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an axonometric cross-sectional view of the first embodiment of the present application;

[0020] Figure 2 This is an axonometric drawing of the first embodiment of the present application;

[0021] Figure 3 This is an exploded view of the first embodiment of the present application;

[0022] Figure 4 This is an axonometric diagram of the sound insulation adjustment process of the first embodiment of the present application;

[0023] Figure 5 This is a top cross-sectional view of a sound insulation embodiment of the present application;

[0024] Figure 6 This is a top cross-sectional view of an embodiment of the present application after sound insulation adjustment;

[0025] Figure 7 This is an axonometric diagram of the sound insulation adjustment process of two implementation methods of this application;

[0026] Figure 8 This is a logic diagram of the coordination of the units in the three implementation modes of this application;

[0027] Figure 9 Axonometric drawings of the three implementation methods of this application when used for sound insulation in buildings;

[0028] Figure 10 Axonometric drawings of the three implementation methods of this application after sound insulation adjustment in buildings;

[0029] Figure 11 This is another axonometric drawing after sound insulation adjustment applied to a building according to the three implementation modes of the present application.

[0030] Description of the numbers in the figure:

[0031] 1 curtain wall frame, 2 panel, 21 sound insulation front membrane, 3 back panel, 31 sound insulation back membrane, 4 installation clips, 41 regulating air holes, 42 quick-connect air head, 43 quick-connect branch, 5 vertical edge sealing, 51 branch air pipe, 6 horizontal edge sealing, 7 sound insulation adjustment air bag, 8 traction support bar, 81 protective film cover. DETAILED DESCRIPTION

[0032] The following describes three implementation methods of the present application in detail with reference to the accompanying drawings.

[0033] The first implementation method:

[0034] Figure 1-6 The curtain wall frame 1 is shown to include a curtain wall frame 1, with mounting strips 4 fixedly installed on both ends of the curtain wall frame 1, a panel 2 being slidably connected to the front end of the curtain wall frame 1, and a back plate 3 being fixedly connected to the back end of the curtain wall frame 1, and vertical edge bands 5 being fixedly connected to the left and right inner walls of the curtain wall frame 1, and a sound insulation and adjustment air bag 7 being fixedly connected between the two vertical edge bands 5, and the front and rear ends of the sound insulation and adjustment air bag 7 forming sound insulation gaps with the panel 2 and the back plate 3 respectively;

[0035] The mounting clip 4 is provided with regulating air holes 41, and the mounting clip 4 is embedded with a plurality of quick-connect taps 43 connected to the regulating air holes 41 at one end near the curtain wall frame 1, and a plurality of branch air pipes 51 inserted into the quick-connect taps 43 are embedded in the vertical edge sealing 5. The branch air pipes 51 extend into the sound insulation regulating air bag 7 at one end away from the quick-connect tap 43 and cooperate with the sound insulation regulating air bag 7. The outer end of the sound insulation regulating air bag 7 is provided with a plurality of elastic micropores. By setting the mounting clip 4, the vertical edge sealing 5 and the sound insulation regulating air bag 7, the sound insulation regulating air bags 7 in all the building curtain walls can be effectively controlled to be uniformly vented and discharged according to the sound insulation requirements during the use of the building curtain wall, thereby changing the sound insulation state formed between the panel 2 and the back panel 3, and then realizing the adaptive adjustment of the overall sound insulation effect of the building, thereby improving the functionality of the building curtain wall, so that it has energy-saving and sound insulation effects while also having the function of adjusting the sound insulation effect on demand, thereby promoting the application and economic benefits of the building curtain wall.

[0036] Figure 3-6 It is shown that the four corners of the front end of the rear panel 3 are fixedly connected with traction support bars 8, the front end of the traction support bars 8 is fixedly connected to the panel 2, and the outer end of the traction support bars 8 is wrapped with a protective film sleeve 81. The setting of the traction support bars 8 and the protective film sleeve 81 can effectively protect the adjusted building curtain wall, avoid damage to the sound insulation adjustment air bag 7 caused by the external environment, thereby ensuring the durability of the building curtain wall and extending its service life.

[0037] Figure 1-6It is shown that the rear end of the panel 2 is fixedly connected to a sound insulation front membrane 21, and the front end of the rear panel 3 is fixedly connected to a sound insulation rear membrane 31. The sound insulation front membrane 21 and the sound insulation rear membrane 31 can be made of PVC or sound insulation cotton material. The setting of the sound insulation front membrane 21 and the sound insulation rear membrane 31 can further improve the sound insulation effect of the building curtain wall. While it can insulate sound through the sound insulation gap, it can also use the effect of the sound insulation material to promote the effectiveness of sound insulation.

[0038] Figure 3-6 It is shown that both the front and rear ends of the sound insulation adjustment air bag 7 are fixedly connected with a connection strip, and the end of the connection strip away from the sound insulation adjustment air bag 7 is fixedly connected to the panel 2 and the back panel 3 at the corresponding positions. When the connection strip is set to achieve the sound insulation effect, the sound insulation gap has a sound insulation effect. At the same time, during the sound insulation adjustment, the sound insulation adjustment air bag 7 and the panel 2 have a linkage effect, thereby promoting the effectiveness of the sound insulation adjustment.

[0039] Figure 1-6 It is shown that during the installation and use of the building curtain wall, if the external noise state changes and the noise increases, or according to the needs of the exhibits inside the exhibition hall, it is necessary to maintain the sound insulation effect of the building curtain wall and adjust the internal and external sounds. The air hole 41 is used to deflate, and the gas in the sound insulation adjustment air bag 7 is discharged from the adjustment air hole 41 through the branch air pipe 51, so that the sound insulation adjustment air bag 7 is continuously contracted, and the panel 2 is driven to move into the curtain wall frame 1 through the action of the involvement bar, so that the traction support bar 8 and the protective film sleeve 81 are both contracted into the curtain wall frame 1, keeping the curtain wall frame 1 on the surface. The panels 2 and the rear panel 3 cooperate to form a closed space, and as the sound insulation regulating air bag 7 continuously contracts, the elastic micropores at the outer end of the sound insulation regulating air bag 7 continuously absorb the air in the sound insulation gap, so that the sound insulation gap gradually forms a vacuum state. Moreover, due to the contraction of the sound insulation regulating air bag 7, the sound insulation gap gradually increases, thus forming two sound insulation spaces in the curtain wall frame 1. During the transmission process of external noise and internal sound, the loss is reduced through the sound insulation front membrane 21, the sound insulation rear membrane 31, the sound insulation regulating air bag 7 and the sound insulation gap, thereby reducing the transmission effect and achieving the sound insulation effect.

[0040] If the external noise state changes and the noise decreases, or according to the needs of the exhibits inside the exhibition hall, the building curtain wall needs to reduce the sound insulation effect, which can effectively transmit the internal and external sounds, use the external sounds to assist the exhibits, transmit the exhibits sound effects to the outside, and increase the display effect of the exhibits. By adjusting the air holes 41 for ventilation, gas is introduced into the sound insulation adjustment air bag 7 through the branch air pipe 51, so that the sound insulation adjustment air bag 7 continues to expand, and under the action of the involvement bar, it drives the panel 2 to move out of the curtain wall frame 1, and drives the traction support bar 8 to open the protective film sleeve 81. In the process of continuous collision of the sound insulation adjustment air bag 7, the gas inside it will continuously enter the sound insulation gap through the elastic micropores and contact the vacuum state of the sound insulation gap. Moreover, since the panel 2 moves to the outside of the curtain wall frame 1, the closed state of the curtain wall frame 1 is released, thereby reducing the sound insulation effect of the building curtain wall and reducing the loss of sound in the transmission process. In this way, the sound insulation effect is adjusted to achieve the connection of internal and external sounds, meet different sound insulation needs, and improve the functional adaptability of the building curtain wall.

[0041] Second implementation method:

[0042] Figure 7 It is shown that the upper and lower inner walls of the curtain wall frame 1 are fixedly connected with horizontal edge banding 6, and a guide hole is opened in the horizontal edge banding 6 to match the traction support bar 8, and the guide hole is set at an angle. The guide hole guides the deformation of the traction support bar 8, which can drive the panel 2 to produce an inclined movement adjustment when the sound insulation curtain wall is adjusted for sound insulation, thereby increasing the aesthetics of the building curtain wall after the sound insulation adjustment.

[0043] Figure 7 It is shown that in the process of reducing the sound insulation effect of the building curtain wall and using the ventilation expansion of the sound insulation adjustment air bag 7 to move the panel 2, the traction support bar 8 moves forward under the drive of the panel 2, and then under the inclined guidance and restriction of the guide hole on the horizontal strip edge sealing 6, the traction support bar 8 guides and restricts the panel 2 in the direction, so that the panel 2 produces an inclined moving out effect, reducing the shielding effect of the panel 2 on the curtain wall frame 1. While improving the aesthetics of the building curtain wall during the sound insulation adjustment process, it can also reduce the loss in the sound transmission process by reducing the shielding effect of the panel 2 on the curtain wall frame 1, thereby further improving the effect of the sound insulation adjustment.

[0044] The third implementation method:

[0045] Figure 8-11 It is shown that both upper and lower ends of the installation strip 4 are embedded with quick-connect air heads 42 that cooperate with the regulating air holes 41, and an auxiliary insert tube is connected inside the quick-connect air head 42. The cooperation between the auxiliary insert tube and the quick-connect air head 42 can achieve the function of mutual cooperation and communication during the installation of the building curtain wall, and then achieve the subsequent unified adjustment of all the building curtain walls on the entire building, achieve consistency in sound insulation adjustment, and improve the efficiency of sound insulation adjustment.

[0046] Figure 8 It is shown that the input end of the auxiliary intubation is connected to the air pressure control unit, the input end of the air pressure control unit is connected to the sound insulation adjustment processing unit, the input end of the sound insulation adjustment processing unit is connected to the external noise sensing unit and the sound insulation mode selection unit, the input end of the external noise sensing unit is connected to the sound probe signal set at the outside end of the building, and the input end of the sound insulation mode selection unit is connected to the sound insulation control screen display signal installed in the building. Through the setting of the air pressure control unit and the sound insulation adjustment processing unit, intelligent control of all building curtain walls on the building is realized, while reducing the difficulty of sound insulation adjustment, it fits the theme of existing smart buildings, improves the adaptability of building curtain walls, and can effectively cooperate with other smart equipment in the building to effectively realize the functionality of the building curtain walls.

[0047] Figure 8 It is shown that the air pressure control unit acts on the auxiliary intubation through an independently arranged air pump device to ventilate and deflate the control air hole 41, thereby realizing the adjustment of the sound insulation adjustment air bag 7. The air pump device can be an existing equipment such as a fan, which can ventilate and deflate the sound insulation adjustment air bag 7 during adjustment, thereby realizing the sound insulation adjustment effect and increasing the functionality and demand adaptability of the building curtain wall.

[0048] Figure 8-11 The figure shows that during the installation of a building curtain wall, the quick-connect air connector 42 and the auxiliary insert are used to connect the regulating air holes 41 between multiple building curtain walls. The building curtain walls in the vertical direction are connected in series through this method, and the building curtain wall groups in the horizontal direction are connected in parallel through the auxiliary insert. The connected air pipes are then connected to the air pump device, and the air pressure control unit is used to regulate the air pump device to achieve the air flow and release function of the regulating air holes 41.

[0049] During the use of the building curtain wall, according to the external noise data transmitted by the sound probe, the data is then transmitted to the sound insulation mode selection unit through the external noise sensing unit, so that the sound insulation mode selection unit can adjust the sound insulation of the building curtain wall according to the originally set sound insulation requirements according to the change state of the external noise data, or select the sound insulation requirement mode through the sound insulation control screen according to the needs of the exhibits in the exhibition hall, and then the data is transmitted to the sound insulation mode selection unit through recognition by the sound insulation mode selection unit, and the sound insulation mode selection unit adjusts the sound insulation effect of the building curtain wall according to the selection of the sound insulation mode;

[0050] The sound insulation mode selection unit transmits the adjustment data to the air pressure control unit. The air pressure control unit controls the air pump device so that it uses the central air tube and the auxiliary cannula to uniformly adjust the control holes 41, thereby achieving control of the sound insulation adjustment air bag 7, thereby changing the sound insulation effect of the building curtain wall to meet different needs;

[0051] In addition, during the sound insulation adjustment process, front and rear trigger plates can be set on the front and rear inner walls of the sound insulation adjustment air bag 7, and the output end of the trigger plate is connected to the sound insulation sensing unit. The output end of the sound insulation sensing unit is connected to the signal of the sound insulation mode selection unit, so that the sound insulation adjustment process can be monitored to avoid damage to the sound insulation adjustment air bag 7 due to excessive adsorption, or damage to the panel 2 and the back panel 3 due to excessive negative pressure in the vacuum state of the sound insulation gap, thereby ensuring safety during the sound insulation adjustment process. In the process of the sound insulation adjustment air bag 7 being deflated and continuously shrinking, the trigger plates on the front and rear sides continue to approach each other, and then until they contact. After contact, they transmit the signal to the sound insulation sensing unit, and the sound insulation sensing unit transmits the contact signal to the sound insulation mode selection unit, so that the sound insulation mode selection unit stops the continuous action of the air pressure adjustment unit, thereby ensuring the service life of the building curtain wall. While ensuring the effectiveness of the sound insulation adjustment, it effectively reduces the damage to the building curtain wall during the sound insulation adjustment process, thereby ensuring the service life of the building curtain wall.

[0052] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A building curtain wall based on energy-saving and sound-insulating design, characterized by: The invention comprises a curtain wall frame (1), wherein both left and right ends of the curtain wall frame (1) are fixedly mounted with mounting clips (4), the front end of the curtain wall frame (1) is slidably connected to a panel (2), the rear end of the curtain wall frame (1) is fixedly connected to a back plate (3), the left and right inner walls of the curtain wall frame (1) are fixedly connected with vertical edge seals (5), a sound insulation adjustment air bag (7) is fixedly connected between the two vertical edge seals (5), and the front and rear ends of the sound insulation adjustment air bag (7) respectively form a sound insulation gap with the panel (2) and the back plate (3); The mounting clip (4) is provided with regulating air holes (41), and a plurality of quick-connect taps (43) connected to the regulating air holes (41) are embedded at one end of the mounting clip (4) close to the curtain wall frame (1), and a plurality of branch air pipes (51) inserted into the quick-connect taps (43) are embedded in the vertical strip edge seal (5), and the branch air pipes (51) extend from one end of the quick-connect tap (43) to the sound insulation regulating air bag (7) and cooperate with the sound insulation regulating air bag (7), and a plurality of elastic micropores are provided at the outer end of the sound insulation regulating air bag (7); The four corners of the front end of the rear panel (3) are fixedly connected to traction support bars (8), the outer ends of the traction support bars (8) are wrapped with protective film sleeves (81), and the front ends of the traction support bars (8) are fixedly connected to the panel (2); The upper and lower inner walls of the curtain wall frame (1) are fixedly connected with a horizontal edge seal (6), and a guide hole matching the traction support bar (8) is provided in the horizontal edge seal (6), and the guide hole is arranged at an angle; The rear end of the panel (2) is fixedly connected to a sound insulation front membrane (21), and the front end of the rear plate (3) is fixedly connected to a sound insulation rear membrane (31).

2. The building curtain wall based on energy-saving and sound-insulating design according to claim 1, characterized in that: Both the front and rear ends of the sound insulation regulating air bag (7) are fixedly connected to a connection strip, and the end of the connection strip away from the sound insulation regulating air bag (7) is fixedly connected to the panel (2) and the rear plate (3) at corresponding positions.

3. The building curtain wall based on energy-saving and sound-insulating design according to claim 1, characterized in that: The upper and lower ends of the mounting clip (4) are both embedded with quick-connect air heads (42) that match the regulating air holes (41), and an auxiliary cannula is connected inside the quick-connect air head (42).

4. The building curtain wall based on energy-saving and sound-insulating design according to claim 3 is characterized by: The input end of the auxiliary intubation tube is connected to an air pressure control unit, the input end of the air pressure control unit is connected to a sound insulation adjustment processing unit, the input end of the sound insulation adjustment processing unit is connected to an external noise sensing unit and a sound insulation mode selection unit, the input end of the external noise sensing unit is connected to the sound probe signal arranged at the outside end of the building, and the input end of the sound insulation mode selection unit is connected to the sound insulation control screen display signal installed in the building.

5. The building curtain wall based on energy-saving and sound-insulating design according to claim 4, characterized in that: The air pressure regulating unit acts on the auxiliary cannula through an independently arranged air pump device to ventilate and deflate the regulating air hole (41), thereby achieving regulation of the sound insulation regulating air bag (7).

Citation Information

Patent Citations

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