A prefabricated sound-absorbing duct device with a suspended ceiling structure

Abstract

This utility model discloses a prefabricated sound-absorbing duct device with a suspended ceiling structure, including a sound-absorbing component and a fresh air unit. One end of the fresh air unit has an interface, and a connecting pipe is fixedly connected inside the interface. One end of the connecting pipe is fixedly connected to a sound-absorbing duct. The sound-absorbing component is installed inside the sound-absorbing duct, comprising a sound-absorbing outer wall, sound-absorbing cotton, and a sound-absorbing inner wall. A baffle is fixedly connected inside the sound-absorbing duct. The perforated pipe and sound-absorbing cotton inside the sound-absorbing component can convert sound energy into heat energy to achieve a sound-absorbing effect. When gas passes through the sound-absorbing duct, the generated sound is effectively silenced by the sound-absorbing component. Longer sound-absorbing components can be installed within a limited duct, enhancing the sound-absorbing effect and achieving multi-stage sound absorption. This solves the problem of inefficient sound absorption with limited-length sound-absorbing ducts, improving sound absorption efficiency and space utilization.

Description

Technical Field

[0001] This utility model relates to the field of pipe silencing devices, specifically a prefabricated silencing pipe device with a suspended ceiling structure. Background Technology

[0002] Prefabricated silencer duct systems are modularly designed noise reduction devices used in ventilation, air conditioning, and industrial piping systems to reduce noise generated by fan operation and airflow turbulence. Especially in ceiling-mounted ventilation systems in large entertainment venues and public places, limited installation space presents a particular challenge to the efficiency of silencer devices. Ventilation duct systems are crucial for maintaining air quality, comfort, and a healthy environment. By expelling pollutants and introducing fresh air, they ensure sufficient oxygen, control temperature and humidity, and improve comfort. Ventilation systems can also expel smoke in emergencies, eliminate odors daily, reduce the risk of germ transmission, and protect the health and safety of personnel.

[0003] The duct silencing device mainly consists of ducts and silencers. The silencer includes sound-absorbing cotton and perforated pipes. When noise occurs, it reduces noise transmission through sound absorption and sound insulation. It uses sound-absorbing materials to absorb sound energy and reduces noise through sound wave reflection and interference. It is suitable for ventilation systems in public places such as music halls. With proper design and management, it can ensure ventilation effect, effectively control noise, and improve the overall environmental quality of the venue.

[0004] Noise generated during the operation of ventilation systems can have negative impacts. The noise mainly comes from the operation of fans, airflow turbulence, duct vibration, and equipment operation. Traditional silencing ducts are limited by the small space in the ceiling, and the length of the silencing components is strictly limited, making it impossible to achieve efficient noise reduction by extending the silencing path, resulting in insufficient sound energy absorption. Ventilation system noise may cause discomfort, communication barriers, and even hearing damage and other health problems, while also damaging the image of the venue. Dust, particles, and other impurities in the air can easily enter the ducts and fresh air units with the airflow, causing equipment blockage, reducing silencing efficiency, and increasing maintenance costs. Traditional devices have low modularity, making it difficult to adapt to the complex spatial layout within the ceiling, and disassembly and maintenance are inconvenient.

[0005] Therefore, based on its many years of experience in design, development and actual production in the relevant industry, the applicant has studied and improved the existing structure and its shortcomings, and provides a prefabricated sound-absorbing duct device with a suspended ceiling structure, in order to achieve a more practical purpose. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides a prefabricated silencing duct device with a suspended ceiling structure. This solves the problems of poor noise reduction effect caused by the limited length of traditional silencing ducts, the inability of silencing components to effectively extend the silencing path, the easy entry of impurities in the airflow into the duct system, which affects the operation of the fresh air unit and silencing components, and the difficulty in disassembling existing filter structures.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution: a prefabricated sound-absorbing duct device with a suspended ceiling structure, including a sound-absorbing component, a fresh air unit, a wall surface, and a support component. One end of the fresh air unit is provided with an interface, and an adapter pipe is fixedly connected inside the interface. One end of the adapter pipe is fixedly connected to a sound-absorbing duct. The fresh air unit provides airflow power to realize indoor and outdoor air exchange.

[0010] The silencing duct houses a silencing component to reduce airflow noise. The silencing component consists of a silencing outer wall, sound-absorbing cotton, and a silencing inner wall, arranged sequentially from the outside to the inside. A baffle is fixedly connected inside the silencing duct, dividing it into a left chamber and a right chamber. The silencing component is divided into three groups inside the silencing duct, with one group located in the left chamber, another in the right chamber, and the last group connecting the left and right chambers through the baffle.

[0011] One end of the adapter pipe is fixedly connected to an air inlet pipe, and one end of the air inlet pipe is fixedly connected to a flexible hose. A clamp is provided on the outer wall of the flexible hose, and bolts are threaded to both ends of the clamp. A filter is fixedly connected to one end of the flexible hose through the clamp, and a threaded groove is provided on the top of the filter.

[0012] Furthermore, the sound-absorbing cotton is disposed inside the outer wall of the sound-absorbing structure, the inner wall of the sound-absorbing structure is disposed inside the sound-absorbing cotton, and the perforated tube is opened inside the inner wall of the sound-absorbing structure. Sound waves enter the sound-absorbing cotton through the perforations, thereby realizing the conversion of sound energy into heat energy.

[0013] Furthermore, one end of the hose is fixedly connected to an exhaust pipe, which is fixedly connected to one end of the adapter pipe, and the other end of the adapter pipe is connected to a silencer pipe to form an airflow channel.

[0014] Furthermore, the outer wall of the filter is provided with filter mesh holes, and the filter is a hollow cylinder.

[0015] Furthermore, the hose is adjustable to 90 degrees, and the filter is connected to one end of the intake or exhaust pipe via the 90-degree hose.

[0016] Furthermore, the support component includes a suspended ceiling and a longitudinal beam, with the suspended ceiling fixedly connected to the bottom of the longitudinal beam; the support component is located at the bottom of the sound-absorbing component, at the bottom end of the fresh air unit, and at the bottom end of the sound-absorbing component, supporting the sound-absorbing device and fixed to the building ceiling space to ensure stability.

[0017] Furthermore, the sound-absorbing pipe is a hollow galvanized steel pipe, which is soundproof and structurally stable; the sound-absorbing cotton is glass wool, which can absorb sound energy, with a thickness of 25mm and a density of 24kg / m³; the sound-absorbing inner wall is a perforated metal plate with perforated tubes densely distributed on its surface; the perforated tubes have a pore diameter range of 0.1-0.2mm and are arranged in an array inside the sound-absorbing inner wall.

[0018] Furthermore, the mesh size of the filter screen is 80 mesh.

[0019] Furthermore, the baffle is made of aluminum alloy and is fixed to the inner wall of the pipe by welding.

[0020] (III) Beneficial Effects

[0021] This utility model provides a prefabricated sound-absorbing duct device with a suspended ceiling structure, which has the following advantages compared with the prior art:

[0022] 1. The silencing duct of this utility model is divided into left and right chambers and a through chamber by baffles. The perforated tube and sound-absorbing cotton inside the silencing component can convert sound energy into heat energy to achieve the silencing effect. When gas passes through the silencing duct, the sound generated will be effectively silenced by the silencing component. Longer silencing components can be installed in a limited duct to enhance the silencing effect and achieve multi-stage silencing. This solves the problem that silencing ducts of limited length cannot achieve efficient silencing, and improves silencing efficiency and space utilization.

[0023] 2. The flexible hose of this utility model is connected to a filter. The holes inside the filter can filter out some impurities, preventing impurities from entering the pipes and fresh air unit and causing blockage. The filter and the hose are connected by a clamp. The threaded groove of the filter can match the clamp. Bolts can be used to install and remove the clamp, which is convenient for replacement and cleaning. It achieves the effect of filtering impurities and solves the cumbersome problems of blockage caused by impurities and reduced noise reduction efficiency, thus improving convenience and practicality. Attached Figure Description

[0024] Figure 1 This is a perspective view of the present utility model;

[0025] Figure 2 This is a schematic diagram of the sound-absorbing pipe structure of this utility model;

[0026] Figure 3This is a schematic diagram of the perforated tube structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the filter structure of this utility model.

[0028] In the diagram: 1. Interface; 2. Silencing duct; 3. Adapter pipe; 4. Air inlet pipe; 5. Hose; 6. Filter; 7. Baffle; 8. Fresh air unit; 9. Wall; 10. Silencing outer wall; 11. Sound-absorbing cotton; 12. Silencing inner wall; 13. Perforated pipe; 14. Exhaust pipe; 15. Filter screen; 16. Threaded groove; 17. Hoop; 18. Bolt; 19. Ceiling; 20. Longitudinal beam; 21. Left chamber; 22. Right chamber. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] like Figures 1-3 As shown, this utility model provides a technical solution: a prefabricated silencing duct device with a suspended ceiling structure, including a silencing component, a fresh air unit 8, a wall 9, and a support component. One end of the fresh air unit 8 has an interface 1, and an adapter pipe 3 is fixedly connected inside the interface 1. One end of the adapter pipe 3 is fixedly connected to a silencing duct 2. The fresh air unit 8 provides airflow power to realize indoor and outdoor air exchange. The fresh air unit 8 performs air intake and exhaust. It is connected to the silencing component through the adapter pipe 3. The other side of the silencing component is also fixed with an adapter pipe 3. When the interface 1 of the fresh air unit 8 does not match the silencing component, they can be connected through the adapter pipe 3. The adapter pipe 3 can connect silencing components of different sizes to the fresh air unit 8, achieving the effect of easy connection and improving the flexibility of the device.

[0031] The silencing duct 2 houses a silencing component to reduce airflow noise. The silencing component, from the outside in, includes an outer silencing wall 10, sound-absorbing cotton 11, and an inner silencing wall 12. A baffle 7 is fixedly connected inside the silencing duct 2. When gas passes through the silencing duct 2, the generated sound is absorbed by the perforated tubes 13 on the inner silencing wall 12, achieving a sound absorption effect. The inner silencing wall 12 has numerous perforated tubes 13, improving the efficiency and quality of sound absorption and making the device more efficient. Simultaneously, the outer surface of the inner silencing wall 12 is wrapped with a ring of sound-absorbing material. The sound-absorbing cotton 11 effectively absorbs sound and also provides sound insulation. It converts some sound into heat energy, enhancing the sound absorption effect and improving the practicality of the device. The sound-absorbing cotton 11 is wrapped with a sound-absorbing outer wall 10, which further enhances the sound insulation effect and also restricts its position, strengthening the silencing component. The silencing component is located inside the silencing pipe 2, which is separated by a baffle 7, forming two sealed cavities: a left chamber 21 and a right chamber 22.

[0032] The baffle 7 divides the silencing pipe 2 into a left chamber 21 and a right chamber 22. The silencing components are divided into three groups inside the silencing pipe 2. One group is located in the left chamber 21, another group is located in the right chamber 22, and the last group passes through the baffle 7 to connect the left chamber 21 and the right chamber 22. When gas enters the silencing pipe 2 from the left, it will be silenced for the first time by the silencing components on the left. Then it enters the left chamber 21. Due to the obstruction of the baffle 7, the gas will pass through the middle silencing components for the second time. Then it enters the right chamber 22. Similarly, the gas will pass through the right silencing components for the third time, thus achieving multi-stage silencing. The sound generated by the gas will be absorbed by the multi-stage silencing effect, which greatly improves the silencing efficiency. Long-distance silencing is achieved in a limited space, saving space and improving silencing efficiency and space utilization.

[0033] like Figure 4 As shown, one end of the adapter pipe 3 is fixedly connected to the air inlet pipe 4, and one end of the air inlet pipe 4 is fixedly connected to the hose 5. The outer wall of the hose 5 is provided with a clamp 17, and the two ends of the clamp 17 are threaded with bolts 18. One end of the hose 5 is fixedly connected to the filter 6 through the clamp 17, and the top of the filter 6 is provided with a threaded groove 16.

[0034] The sound-absorbing cotton 11 is placed inside the sound-absorbing outer wall 10, the sound-absorbing inner wall 12 is placed inside the sound-absorbing cotton 11, and the perforated tube 13 is opened inside the sound-absorbing inner wall 12. Sound waves enter the sound-absorbing cotton 11 through the perforations, realizing the conversion of sound energy into heat energy.

[0035] One end of the hose 5 is fixedly connected to the exhaust pipe 14, which is fixedly connected to one end of the adapter pipe 3. The other end of the adapter pipe 3 is connected to the silencer pipe 2, forming an airflow channel.

[0036] The outer wall of the filter 6 has a filter screen hole 15, and the filter 6 is a hollow cylinder.

[0037] The hose 5 is adjustable to 90 degrees, and the filter 6 is connected to one end of the intake pipe 4 or the exhaust pipe 14 via the 90-degree hose 5.

[0038] The support components include a ceiling 19 and a longitudinal beam 20. The ceiling 19 is fixedly connected to the bottom of the longitudinal beam 20. The support components are located at the bottom of the sound-absorbing components and at the bottom of the fresh air unit 8. The ceiling 19 is located at the bottom of the sound-absorbing components, supporting the sound-absorbing device and fixed to the building ceiling space to ensure stability.

[0039] The sound-absorbing pipe 2 is a hollow pipe made of galvanized steel, which is soundproof and structurally stable; the sound-absorbing cotton 11 is glass wool, which can absorb sound energy, with a thickness of 25mm and a density of 24kg / m³; the sound-absorbing inner wall 12 is a perforated metal plate with perforated pipes 13 densely distributed on its surface; the perforated pipes 13 have a pore diameter range of 0.1-0.2mm and are arranged in an array inside the sound-absorbing inner wall 12.

[0040] The filter screen has 15 openings and a mesh size of 80.

[0041] The baffle 7 is made of aluminum alloy and is fixed to the inner wall of the pipe by welding.

[0042] When the fresh air unit 8 starts working, impurities in the air will enter the silencer duct 2 and the interior of the fresh air unit 8, easily causing blockages, reducing the efficiency of the silencer components, and even affecting the lifespan of the device and increasing maintenance costs. Therefore, a filter 6 is installed to prevent impurities and dust from entering the device, thus achieving the filtering function. The top of the filter 6 has a threaded groove 16, the shape of which matches the clamp 17. When the hose 5 is connected to the filter 6, simply align the clamp 17 with the threaded groove 16 through the hose 5 for fixing. It is simple and easy to operate. Bolt 1... Tightening 8 reduces and secures the clamp 17, enhancing the fixing effect and facilitating replacement, disassembly, and cleaning. The outer wall of the filter 6 has filter mesh holes 15, which filter out impurities and dust. One end of the hose 5 is fixedly connected to an exhaust pipe 14, which is also fixedly connected to one end of the adapter pipe 3. The device includes an exhaust section and an intake section. The fresh air unit 8 delivers indoor air to the outdoor environment outside the wall 9 through the exhaust section, while simultaneously delivering fresh outdoor air to the indoor space inside the wall 9. The interior of the sound-absorbing outer wall 10 is equipped with... The sound-absorbing cotton 11 has an internal sound-absorbing inner wall 12, and the inner wall 12 has a perforated tube 13, forming a sound-absorbing component to achieve sound absorption and sound insulation. The sound-absorbing pipe 2 is a hollow pipe, and the sound-absorbing components, cavity, and baffle 7 inside the hollow pipe achieve a multi-stage sound absorption effect. The filter 6 is a hollow cylinder, and the internal filter mesh 15 can filter impurities. The clamp 17 is a metal ring, which strengthens the fixing effect and firmly fixes the filter 6 and the hose 5, improving the reliability of the device. The hose 5 is adjustable. A 90-degree flexible hose 5 allows for easier connection between the horizontal axis silencer duct 2 and the vertical axis filter 6. A suspended ceiling structure includes a support assembly with an assemblable duct silencer device as described above. The support assembly includes a suspended ceiling 19 and a longitudinal beam 20. The suspended ceiling 19 is fixedly connected to the bottom of the longitudinal beam 20. The support assembly is located at the bottom of the silencer assembly and at the bottom of the fresh air unit 8. The suspended ceiling 19 and the longitudinal beam 20 provide support, enhancing the stability of the device.

[0043] Working principle: When using this assemblable silencing duct and ceiling device, first connect interface 1 to the silencing component through adapter pipe 3. Connect the intake pipe 4 and exhaust pipe 14 at both ends of the fresh air unit 8. The silencing component consists of a silencing outer wall 10, sound-absorbing cotton 11, a silencing inner wall 12, and a perforated pipe 13. When the airflow enters the silencing duct 2, the sound energy will be converted into heat energy through the action of the silencing component, achieving the silencing effect. The silencing duct 2 contains silencing components, and the baffle 7 divides the silencing duct 2 into two cavities. When the gas passes through the first set of silencing components, the first silencing is achieved. Then, it enters the cavity and passes through the second set of silencing components, achieving the second silencing. Then, it enters the cavity and passes through the third set of silencing components, achieving the third silencing. This achieves multi-stage silencing, enhances the silencing efficiency, and allows for the installation of more and longer silencing components in a limited space. This solves the problem of not being able to install longer silencing components in a limited space, saving space and improving space utilization and silencing efficiency.

[0044] A filter 6 is connected to one end of the hose 5. The filter 6 filters out impurities to prevent them from entering the silencer duct 2 or the fresh air unit 8 and causing blockage. Blockage would affect the efficiency of the silencer components and the normal operation of the fresh air unit 8. The filter 6 is connected to the hose 5 by a clamp 17. A bolt 18 is connected to the end of the clamp 17. The bolt 18 secures the clamp 17 to the filter 6. At the same time, the top of the filter 6 has a threaded groove 16, which allows the clamp 17 to lock the hose 5 into place for a secure connection. This also facilitates the replacement of the filter 6, achieving a highly efficient filtration effect and solving the cumbersome problem of blockage caused by impurities, thus improving practicality and convenience.

[0045] In summary, the silencing duct of this utility model is divided into left and right chambers and a through chamber by baffles. The perforated tube and sound-absorbing cotton inside the silencing component can convert sound energy into heat energy to achieve a silencing effect. When gas passes through the silencing duct, the generated sound will be effectively silenced by the silencing component. Longer silencing components can be installed in a limited duct to enhance the silencing effect, achieving a multi-stage silencing function. This solves the problem that silencing ducts of limited length cannot achieve efficient silencing, improving silencing efficiency and space utilization.

[0046] The utility model features a flexible hose connected to a filter. The internal holes of the filter can filter out some impurities, preventing them from entering the pipes and fresh air unit and causing blockages. The filter and hose are connected by a clamp, and the threaded grooves on the filter can match the clamp. Bolts can be used to install and remove the clamp, facilitating replacement and cleaning. This achieves the effect of filtering impurities, solving the cumbersome problems of blockages caused by impurities and reduced noise reduction efficiency, and improving convenience and practicality.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated sound-absorbing duct device with a suspended ceiling structure, comprising a sound-absorbing component, a fresh air unit (8), a wall surface (9), and a support component, characterized in that: One end of the fresh air unit (8) is provided with an interface (1), and an adapter pipe (3) is fixedly connected inside the interface (1). One end of the adapter pipe (3) is fixedly connected with a silencer pipe (2). The fresh air unit (8) provides airflow power to realize indoor and outdoor air exchange. The silencing duct (2) contains a silencing component to reduce airflow noise. The silencing component consists of a silencing outer wall (10), sound-absorbing cotton (11), and a silencing inner wall (12) arranged sequentially from the outside to the inside. A baffle (7) is fixedly connected inside the silencing duct (2). The baffle (7) divides the silencing duct (2) into a left chamber (21) and a right chamber (22). The silencing component is divided into three groups inside the silencing duct (2). One group is located in the left chamber (21), another group is located in the right chamber (22), and the last group passes through the baffle (7) to connect the left chamber (21) and the right chamber (22). One end of the adapter pipe (3) is fixedly connected to an air inlet pipe (4), and one end of the air inlet pipe (4) is fixedly connected to a hose (5). The outer wall of the hose (5) is provided with a clamp (17), and the two ends of the clamp (17) are threaded with bolts (18). One end of the hose (5) is fixedly connected to a filter (6) through the clamp (17), and the top of the filter (6) is provided with a threaded groove (16).

2. The prefabricated silencer duct device with a suspended ceiling structure according to claim 1, characterized in that: The sound-absorbing cotton (11) is located inside the sound-absorbing outer wall (10), the sound-absorbing inner wall (12) is located inside the sound-absorbing cotton (11), and the perforated tube (13) is located inside the sound-absorbing inner wall (12). Sound waves enter the sound-absorbing cotton (11) through the perforations, thereby converting sound energy into heat energy.

3. The prefabricated sound-absorbing duct device with a suspended ceiling structure according to claim 2, characterized in that: One end of the hose (5) is fixedly connected to an exhaust pipe (14), which is fixedly connected to one end of the adapter pipe (3). The other end of the adapter pipe (3) is connected to the silencer pipe (2) to form an airflow channel.

4. The prefabricated sound-absorbing duct device with a suspended ceiling structure according to claim 3, characterized in that: The filter (6) has a filter mesh (15) on its outer wall and is a hollow cylinder.

5. A prefabricated sound-absorbing duct device with a suspended ceiling structure according to claim 4, characterized in that: The hose (5) is adjustable to 90 degrees, and the filter (6) is connected to one end of the intake pipe (4) or the exhaust pipe (14) via the 90-degree hose (5).

6. A prefabricated sound-absorbing duct device with a suspended ceiling structure according to claim 5, characterized in that: The support component includes a ceiling (19) and a longitudinal beam (20). The ceiling (19) is fixedly connected to the bottom of the longitudinal beam (20). The support component is located at the bottom of the sound-absorbing component. The support component is located at the bottom of the fresh air unit (8). The ceiling (19) is located at the bottom of the sound-absorbing component, supporting the sound-absorbing device and fixed to the building ceiling space to ensure stability.

7. A prefabricated sound-absorbing duct device with a suspended ceiling structure according to claim 6, characterized in that: The sound-absorbing pipe (2) is a hollow pipe of galvanized steel, which is soundproof and has a stable structure; the sound-absorbing cotton (11) is glass wool, which can absorb sound energy, and its thickness is 25mm and its density is 24kg / m³; the sound-absorbing inner wall (12) is a perforated metal plate with perforated pipes (13) densely distributed on its surface; the perforated pipes (13) have a pore diameter range of 0.1-0.2mm and are arranged in an array inside the sound-absorbing inner wall (12).

8. A prefabricated sound-absorbing duct device with a suspended ceiling structure according to claim 7, characterized in that: The filter mesh (15) has a mesh size of 80.

9. A prefabricated sound-absorbing duct device with a suspended ceiling structure according to claim 8, characterized in that: The baffle (7) is made of aluminum alloy and is fixed to the inner wall of the pipe by welding.

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