Heating and ventilation pipe sound insulation structure with high sound insulation performance

Abstract

The utility model discloses a heating and ventilation pipe sound insulation structure with high sound insulation performance in the technical field of sound insulation and noise reduction, which comprises a frame, the frame is arranged on a wall body, a flange assembly is arranged between the frame and the wall body, the flange assembly is used for structural fixation and structural sealing, a support frame is arranged on the outer side of the frame, and the support frame is arranged on the outer side of the frame. A sound insulation assembly is arranged on the outer side of the frame, and the sound insulation assembly is arranged in a multi-layer sound insulation mode. According to the utility model, by arranging a dual noise reduction structure with external sound insulation and internal sound absorption, the dual functions of effectively isolating external noise and eliminating noise in the pipe are realized, the external sound insulation is composed of sound insulation components with multiple layers of sound insulation structures, a triple coupling noise reduction mechanism is formed, low, medium and high-frequency sound waves and transmission of structural vibration are controlled, and the noise reduction effect is improved. A sealing assembly of the internal heating and ventilation pipe is of a flexible structure, a pipeline supporting foundation is provided, pipeline vibration energy is absorbed, structural noise transmission is reduced, a double-leakage-proof barrier is formed, and sealing reliability is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of sound insulation and noise reduction technology, and in particular to a sound insulation structure for HVAC pipes with high sound insulation performance. Background Technology

[0002] Noise pollution, water pollution, and air pollution are considered the three major forms of pollution in the world today. With the rapid development of industry, agriculture, and transportation, noise pollution has become increasingly serious, and its harm to people's physical and mental health is gradually being recognized and addressed. Therefore, noise control is urgently needed. In engineering projects, vibration isolation, sound insulation, sound absorption, and noise reduction measures are generally adopted to achieve the goal of noise control, often starting from controlling the noise source and blocking the noise transmission path.

[0003] Sound insulation is one of the most commonly used noise control technologies. It primarily uses sound-insulating components to separate the sound source from the receiver, blocking the propagation of airborne sound energy, thereby achieving noise reduction. In industrial noise control, lightweight sound insulation structures are commonly used, such as soundproof enclosures, sound barriers, and soundproof doors. Lightweight sound insulation materials come in three structural types: single-layer, double-layer, and multi-layer composite.

[0004] Sound absorption technology is a commonly used and effective noise reduction and control method in engineering. It mainly absorbs sound energy through the thin film effect or resonance effect of materials. Generally speaking, all materials have a certain sound absorption capacity. Different materials have different sound absorption capacities, but only materials with a sound absorption coefficient of 0.2 or higher are called sound-absorbing materials, and those with a sound absorption coefficient greater than 0.5 are called ideal sound absorption coefficients.

[0005] Existing sound insulation structures are mostly designed for soundproof enclosures of large noisy equipment such as fans, motors, and machine rooms, and soundproof walls for highways and high-speed rail tracks. Sound insulation designs for HVAC pipes are extremely rare. HVAC pipes are flexible pipes with large diameters and thin walls, and the pipes themselves have virtually no sound insulation properties. HVAC pipes pass through openings in walls between indoor and outdoor spaces. Because the pipes themselves have virtually no sound insulation properties, noise can not only escape through gaps in the walls but also penetrate the HVAC pipes.

[0006] Currently, sound insulation for HVAC pipes often involves wrapping the pipes with a certain thickness of acoustic material, such as glass wool or foam, for sound absorption. However, even with a considerable thickness of acoustic material, this type of structure still has unsatisfactory sound insulation performance and suffers from drawbacks such as poor rigidity, poor resistance to rain and corrosion, and poor safety, posing a risk of fire. To address the shortcomings of existing HVAC pipe sound insulation structures, we propose a high-performance sound insulation structure for HVAC pipes. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a high-sound-insulation HVAC pipe sound insulation structure. The purpose of this utility model is achieved as follows: A high-sound-insulation HVAC pipe sound insulation structure includes a frame installed on a wall. A flange assembly is provided between the frame and the wall for structural fixation and sealing. A support frame is provided on the outside of the frame, and a sound insulation component is provided on the outside of the frame, the sound insulation component being multi-layered. An HVAC pipe is installed inside the frame, with both ends of the HVAC pipe penetrating the wall. A sealing component is provided between the HVAC pipe and the wall.

[0008] Optionally, the wall includes a side wall and a base plate, the side wall and the base plate are arranged perpendicularly, one end of the HVAC pipe passes through the side wall, and the other end of the HVAC pipe passes through the base plate.

[0009] Optionally, the frame is welded from square tubes, the frame is fitted to the support frame, the frame and the support frame are correspondingly arranged, and the support frame wraps around the frame structure.

[0010] Optionally, the flange assembly includes a back flange and a bottom flange, which are welded to the frame and bolted to the wall, respectively. A rubber gasket is provided between the back flange and the bottom flange and the wall.

[0011] Optionally, the multi-layer sound insulation structure of the sound insulation component includes, from the outside to the inside, a sound insulation steel plate, a connecting plate, a sound insulation board, and a perforated plate. The connecting plate is a damping plate made of rubber, the sound insulation board is made of glass wool, the sound insulation steel plate forms an outer protective layer, the connecting plate is bonded to the inner side of the sound insulation steel plate to suppress the transmission of structural vibration, the sound insulation board is filled inside the connecting plate to absorb mid-to-high frequency sound waves, and the perforated plate is fixed inside the sound insulation board to form a resonant cavity to dissipate low-frequency sound waves, thus forming a triple-coupling noise reduction mechanism.

[0012] Optionally, the sound insulation component is an integrated prefabricated structure, and the sound insulation component is connected to the support frame by screws. The screws pass through the sound insulation component, the support frame, and the frame, and the sound insulation component is evenly distributed on the outside of the support frame.

[0013] Optionally, the thickness of the perforated plate is 1.5 mm, the perforation rate is 35%, and the perforated plate is arranged in an equilateral triangle.

[0014] Optionally, the outer side of the soundproof steel plate is coated with an anti-corrosion coating.

[0015] Optionally, the sealing assembly includes a countersunk head embedded in the side wall, the countersunk head having a through hole, the HVAC pipe being disposed in the through hole, a rubber ring being disposed between the HVAC pipe and the countersunk head, and a sealing ring being disposed between the HVAC pipe and the countersunk head.

[0016] Optionally, the number of sealing rings is two, and the two sealing rings are symmetrically distributed on both sides of the rubber ring, and the sealing rings are in contact with the rubber ring.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This application achieves the dual effect of effectively isolating external noise and eliminating internal noise by setting a dual noise reduction structure of external sound insulation and internal sound absorption. The external sound insulation is composed of sound insulation components with multi-layer sound insulation structure, forming a triple coupling noise reduction mechanism, controlling the propagation of low, medium and high frequency sound waves and structural vibration, so that the overall sound insulation reaches more than 35dB and reduces external noise.

[0018] The sealing assembly between the internal HVAC pipe and the countersunk head in the hole adopts a flexible structure, providing a support foundation for the pipe. The rubber ring can effectively absorb the vibration energy of the pipe and reduce the transmission of structural noise. The double sealing rings distributed on both sides fit tightly with the rubber ring, forming a double anti-leakage barrier, which significantly improves the sealing reliability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the HVAC pipe sound insulation structure provided by this utility model.

[0021] Figure 2 This is a cross-sectional schematic diagram of the sound insulation structure of the HVAC pipe provided by this utility model.

[0022] Figure 3 This is a cross-sectional schematic diagram of the sealing component structure provided by this utility model.

[0023] Figure 4 This is a schematic diagram of the sound insulation structure skeleton of the HVAC pipe provided by this utility model.

[0024] Figure 5 This is a schematic diagram of the internal structure of the HVAC pipe sound insulation structure provided by this utility model.

[0025] Figure 6This is a cross-sectional schematic diagram of the sound insulation component of the HVAC pipe sound insulation structure provided by this utility model.

[0026] In the diagram: 1. Wall; 101. Side wall; 102. Base plate; 2. Frame; 201. Support frame; 3. Flange assembly; 301. Back flange; 302. Bottom flange; 303. Rubber gasket; 4. Sound insulation assembly; 401. Sound insulation steel plate; 402. Connecting plate; 403. Sound insulation board; 404. Perforated plate; 5. Sealing assembly; 501. Countersunk head in hole; 502. Rubber ring; 503. Sealing ring; 6. HVAC pipe; 7. Screw; 8. Bolt. Detailed Implementation

[0027] 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.

[0028] like Figures 1 to 6 The diagram shows a high-sound-insulation HVAC pipe sound insulation structure, including a frame 2, which is installed on a wall 1. A flange assembly 3 is provided between the frame 2 and the wall 1. The flange assembly 3 is used for structural fixation and sealing. A support frame 201 is provided on the outside of the frame 2. A sound insulation component 4 is provided on the outside of the frame 2. The sound insulation component 4 is arranged in a multi-layer sound insulation configuration. An HVAC pipe 6 is provided inside the frame 2. Both ends of the HVAC pipe 6 penetrate the wall 1. A sealing component 5 is provided between the HVAC pipe 6 and the wall 1.

[0029] Furthermore, this application forms a dual noise reduction structure with external sound insulation and internal sound absorption by setting sound insulation components and sealing components 5. This achieves the dual effect of effectively isolating external noise and eliminating noise inside the pipe, thus realizing efficient control of the noise of the HVAC pipe 6. The external sound insulation structure effectively blocks the transmission of environmental noise, while the internal sound absorption structure specifically eliminates vibration noise generated inside the pipe. The two work together to form a complete noise control closed loop. On the one hand, external noise interference is blocked by physical isolation, and on the other hand, internal noise sources are eliminated by sound energy conversion, achieving a comprehensive noise reduction effect of internal and external noise control. Compared with traditional single noise reduction schemes, the embodiment provided by this utility model can simultaneously address the internal and external noise problems faced by the pipeline system. It not only significantly improves the overall noise reduction performance but also avoids the "weakest link effect" in noise control, ensuring that a stable noise reduction effect can be maintained under various working conditions.

[0030] Specifically, the wall 1 includes a side wall 101 and a base plate 102. The side wall 101 and the base plate 102 are set perpendicularly. One end of the HVAC pipe 6 passes through the side wall 101, and the other end of the HVAC pipe 6 passes through the base plate 102. The frame 2 is composed of welded square tubes. The frame 2 is attached to the support frame 201 and the frame 2 and the support frame 201 are set accordingly. The support frame 201 wraps the structure of the frame 2. The flange assembly 3 includes a back flange 301 and a bottom flange 302. The back flange 301 and the bottom flange 302 are welded to the frame 2 respectively. The back flange 301 and the bottom flange 302 are connected to the wall 1 by bolts 8 respectively. Rubber gaskets 303 are provided between the back flange 301 and the bottom flange 302 and the wall 1.

[0031] Furthermore, a nested structure of square tube welded frame 2 and support frame 201 is adopted to form a stable support system, wherein frame 2 provides the main load-bearing skeleton, and support frame 201 enhances the overall structural strength through a wrapping design;

[0032] The bidirectional fixing design of the back flange 301 and the bottom flange 302 is firmly connected to the vertically set side wall 101 and the base plate 102, respectively. Combined with the elastic buffering effect of the rubber pad 303, it forms a stable three-dimensional support.

[0033] First, the modular frame 2 and flange assembly 3 facilitate standardized production and rapid installation, greatly improving construction efficiency. Second, the combination of the rigid metal frame 2 and the flexible rubber pad 303 ensures the structural stability of the support system and effectively isolates the transmission of pipeline vibration to the building structure, reducing noise pollution.

[0034] In addition, the bidirectional flange fixed with rubber gasket 303 not only ensures the reliability of the connection, but also compensates for the installation error of the building structure, adapts to thermal expansion and contraction deformation under different working conditions, and significantly extends the service life of the system.

[0035] Specifically, the multi-layer sound insulation structure of the sound insulation component 4 includes, from the outside to the inside, a sound insulation steel plate 401, a connecting plate 402, a sound insulation board 403, and a perforated plate 404. The connecting plate 402 is a damping plate made of rubber, and the sound insulation board 403 is made of glass wool. The sound insulation steel plate 401 forms the outer protective layer. The connecting plate 402 is bonded to the inner side of the sound insulation steel plate to suppress the transmission of structural vibration. The sound insulation board 403 is filled inside the connecting plate 402 to absorb mid-to-high frequency sound waves. The perforated plate 404 is fixed inside the sound insulation board 403 to form a resonant cavity to dissipate low frequency sound waves, thus forming a triple-coupled noise reduction mechanism.

[0036] Furthermore, the sound insulation component 4 adopts a layered structure from the outside to the inside. The outer layer of sound insulation steel plate 401 provides a sturdy metal protective barrier, the middle rubber damping layer effectively suppresses the transmission of structural vibration, the inner glass wool sound insulation board 403 efficiently absorbs mid-to-high frequency noise, and the resonant cavity formed by the innermost perforated plate 404 is specifically designed to dissipate low-frequency noise.

[0037] The advantages of the triple-coupling noise reduction mechanism are: First, the functional layers work together to form a noise control system covering the entire frequency band, achieving multi-dimensional governance from airborne sound to structural sound; Second, the combination of rigid and flexible materials ensures the durability of the structure while also giving full play to the acoustic characteristics of different materials.

[0038] Specifically, the sound insulation component 4 is an integrated prefabricated structure. The sound insulation component 4 is connected to the support frame 201 by screws 7. The screws 7 pass through the sound insulation component 4, the support frame 201 and the frame 2. The sound insulation component 4 is evenly distributed on the outside of the support frame 201. The outside of the sound insulation steel plate 401 is coated with an anti-corrosion coating.

[0039] Furthermore, the sound insulation component 4 adopts a prefabricated integral structure, which is firmly connected to the support frame 201 and the frame 2 by screws 7 to ensure installation accuracy and structural strength; the sound insulation component 4 is evenly distributed on the outside of the support frame 201 to form a complete sound insulation barrier; the anti-corrosion coating on the outside of the sound insulation steel plate 401 effectively improves durability.

[0040] Furthermore, firstly, the integrated prefabricated structure significantly improves construction efficiency and ensures the precision of the fit between components; secondly, the standardized connection method facilitates rapid on-site installation and subsequent maintenance; and finally, the optimized material combination and structural design ensure noise reduction while improving the system's environmental adaptability and service life.

[0041] Specifically, the thickness of the perforated 404 is 1.5mm, the perforation rate is 35%, and the perforated 404 is distributed in an equilateral triangle.

[0042] Specifically, the sealing component 5 includes a countersunk head 501 embedded in the side wall 101. A through hole is formed inside the countersunk head 501, and the heating and ventilation pipe 6 is installed in the through hole. A rubber ring 502 is installed between the heating and ventilation pipe 6 and the countersunk head 501. A sealing ring 503 is installed between the heating and ventilation pipe 6 and the countersunk head 501. There are two sealing rings 503, which are symmetrically distributed on both sides of the rubber ring 502 and are in contact with the rubber ring 502.

[0043] Furthermore, a pre-embedded countersunk head 501 structure is adopted to form a stable pipe installation base. The rubber ring 502 and the symmetrically distributed double sealing rings 503 constitute a three-level sealing system. The rubber ring 502 provides the main seal and vibration buffer, while the sealing rings 503 on both sides form redundant sealing protection.

[0044] First, the pre-embedded countersunk structure ensures installation accuracy and avoids dimensional deviations caused by on-site drilling; second, the elastic rubber ring 502 effectively absorbs pipeline vibration and prevents structural noise transmission; finally, the synergistic effect of the triple seals creates a gradient sealing effect, significantly improving airtightness and waterproof performance.

[0045] Therefore, the sound insulation structure provided by this utility model is particularly suitable for wall penetrations where sealing requirements are strict. While ensuring the free expansion and contraction of the pipe, it eliminates the risk of leakage. Moreover, maintenance only requires replacing the sealing component 5, which significantly extends the service life of the overall structure.

[0046] In summary, this application achieves the dual effect of effectively isolating external noise and eliminating internal noise by setting up a dual noise reduction structure of external sound insulation and internal sound absorption. The external sound insulation is composed of sound insulation components with multi-layer sound insulation structure, forming a triple-coupled noise reduction mechanism to control the propagation of low, medium and high frequency sound waves and structural vibrations, so that the overall sound insulation reaches more than 35dB and reduces external noise.

[0047] The sealing assembly 5 between the internal HVAC pipe 6 and the countersunk head 501 adopts a flexible structure, providing a support base for the pipe. The rubber ring 502 can effectively absorb the vibration energy of the pipe and reduce the transmission of structural noise. The double sealing rings 503, symmetrically distributed on both sides, fit tightly with the rubber rings 502, forming a double anti-leakage barrier and significantly improving the sealing reliability.

[0048] First, the elastic properties of the rubber ring 502 can compensate for installation deviations and isolate vibration transmission. Second, the double sealing rings 503 form redundant seals on both sides of the rubber ring 502, ensuring sealing performance even if one side fails. Furthermore, the overall structure is compact, achieving both vibration reduction and noise reduction as well as fluid sealing within a limited space. Finally, the pre-embedded countersunk design facilitates construction and installation and maintains structural stability over the long term. It is particularly suitable for sealing requirements when six HVAC pipes pass through a building structure.

[0049] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A high sound insulation performance heating pipe sound insulation structure, comprising a frame (2) installed on a wall (1), characterized in that: A flange assembly (3) is provided between the frame (2) and the wall (1). The flange assembly (3) is used for structural fixation and structural sealing. A support frame (201) is provided on the outside of the frame (2). A sound insulation assembly (4) is provided on the outside of the frame (2). The sound insulation assembly (4) is provided in a multi-layer sound insulation configuration. A heating and ventilation pipe (6) is provided inside the frame (2). Both ends of the heating and ventilation pipe (6) penetrate the wall (1). A sealing assembly (5) is provided between the heating and ventilation pipe (6) and the wall (1).

2. A high sound insulation performance heating and ventilation pipe sound insulation structure according to claim 1, characterized in that: The wall (1) includes a side wall (101) and a base plate (102). The side wall (101) and the base plate (102) are arranged perpendicularly. One end of the heating pipe (6) passes through the side wall (101) and the other end of the heating pipe (6) passes through the base plate (102).

3. A high sound insulation performance heating and ventilation pipe sound insulation structure according to claim 1, characterized in that: The frame (2) is made of square tubes welded together. The frame (2) is attached to the support frame (201). The frame (2) and the support frame (201) are arranged correspondingly. The support frame (201) wraps the frame (2) structure.

4. The high sound insulation performance heating and ventilation pipe sound insulation structure according to claim 1, characterized in that: The flange assembly (3) includes a back flange (301) and a bottom flange (302). The back flange (301) and the bottom flange (302) are welded to the frame (2) respectively. The back flange (301) and the bottom flange (302) are connected to the wall (1) by bolts (8) respectively. A rubber gasket (303) is provided between the back flange (301) and the bottom flange (302) and the wall (1).

5. A high sound insulation performance heating and ventilation pipe sound insulation structure according to claim 1, characterized in that: The multi-layer sound insulation structure of the sound insulation component (4) includes, from the outside to the inside, a sound insulation steel plate (401), a connecting plate (402), a sound insulation board (403), and a perforated plate (404). The connecting plate (402) is a damping plate made of rubber. The sound insulation board (403) is made of glass wool. The sound insulation steel plate (401) forms an outer protective layer. The connecting plate (402) is bonded to the inner side of the sound insulation steel plate to suppress the transmission of structural vibration. The sound insulation board (403) is filled inside the connecting plate (402) to absorb mid-to-high frequency sound waves. The perforated plate (404) is fixed inside the sound insulation board (403) to form a resonant cavity to dissipate low-frequency sound waves, thus forming a triple coupling noise reduction mechanism.

6. A high sound insulation performance heating and ventilation pipe sound insulation structure according to claim 1, characterized in that: The sound insulation component (4) is an integrated prefabricated structure. The sound insulation component (4) is connected to the support frame (201) by screws (7). The screws (7) pass through the sound insulation component (4), the support frame (201) and the frame (2). The sound insulation component (4) is evenly distributed on the outside of the support frame (201).

7. A high sound insulation performance heating and ventilation pipe sound insulation structure according to claim 5, characterized in that: The perforated plate (404) has a thickness of 1.5 mm and a perforation rate of 35%. The perforated plate (404) is arranged in an equilateral triangle.

8. A high sound insulation performance heating and ventilation pipe sound insulation structure according to claim 5, characterized in that: The outer side of the soundproof steel plate (401) is coated with an anti-corrosion coating.

9. A high sound insulation performance heating and ventilation pipe sound insulation structure according to claim 1, characterized in that: The sealing assembly (5) includes a countersunk head (501) embedded in the side wall (101). A through hole is formed inside the countersunk head (501). The heating and ventilation pipe (6) is disposed in the through hole. A rubber ring (502) is disposed between the heating and ventilation pipe (6) and the countersunk head (501). A sealing ring (503) is disposed between the heating and ventilation pipe (6) and the countersunk head (501).

10. A high sound-insulation performance heating and ventilation pipe sound-insulation structure according to claim 9, characterized in that: There are two sealing rings (503), which are symmetrically distributed on both sides of the rubber ring (502) and are in contact with the rubber ring (502).

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