A noise reduction type corridor vent silencer

Abstract

The utility model provides a kind of noise reduction type corridor ventilation opening sound attenuation equipment, including noise reduction frame, flow guide frame and ventilation cover plate;Flow guide frame and ventilation cover plate are respectively detachably connected in the both ends of noise reduction frame;Noise reduction frame includes outer frame body and inner frame body;Outer frame body is connected with a frame connecting plate in one end close to ventilation cover plate;Inner frame body is coaxially arranged in the inner side of outer frame body and is connected with frame connecting plate;The inner peripheral wall of outer frame body and the outer peripheral wall of inner frame body form a sound attenuation cavity for filling sound attenuation cotton;Flow guide frame is detachably connected with the end of outer frame body away from frame connecting plate and covers sound attenuation cavity;Multiple evenly distributed air holes are provided on the inner peripheral wall of inner frame body, and air hole and sound attenuation cavity are interconnected.The utility model not only can effectively attenuate noise for the airflow of corridor ventilation opening, effectively solve the technical problem that corridor ventilation opening is prone to produce larger noise when ventilating in prior art, but also can conveniently disassemble and maintain equipment.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology, specifically to a noise reduction corridor ventilation opening silencer. Background Technology

[0002] In modern building and infrastructure construction, corridors serve as vital passageways for the flow of people and goods, making the design and operation of their ventilation systems crucial. A good ventilation system can effectively improve air quality within corridors, removing harmful gases, moisture, and heat, ensuring the health and safety of personnel, and also facilitating the normal operation of equipment.

[0003] However, due to considerations of building space layout and functional requirements, ventilation system ducts often need to be bent and stacked multiple times. This complex duct design inevitably increases airflow resistance, resulting in significant wind loss during transmission. To ensure ventilation effectiveness, it is usually necessary to increase the operating speed of the ventilation system. However, when the airflow is high-speed, it generates a sharp whistling sound, which, combined with other noise sources such as fan operation, significantly increases the noise at the corridor ventilation openings. This noise not only seriously affects the comfort of the surrounding environment and disrupts people's normal work and life, but long-term exposure to such a noise environment may also cause irreversible damage to human hearing, the nervous system, and other aspects. Utility Model Content

[0004] The purpose of this utility model is to provide a noise reduction corridor ventilation opening silencing device, which effectively solves the technical problem that the corridor ventilation opening will generate a lot of noise during ventilation in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a noise-reducing corridor ventilation opening silencing device, including a noise-reducing frame, a flow guide frame, and a ventilation cover plate; the flow guide frame and the ventilation cover plate are detachably connected to both ends of the noise-reducing frame; the noise-reducing frame includes an outer frame and an inner frame; a frame-shaped connecting plate is connected to one end of the outer frame near the ventilation cover plate; the inner frame is coaxially disposed inside the outer frame and connected to the frame-shaped connecting plate; a silencing cavity for filling with silencing cotton is formed between the inner peripheral wall of the outer frame and the outer peripheral wall of the inner frame; the flow guide frame is detachably connected to the end of the outer frame away from the frame-shaped connecting plate and covers the silencing cavity; multiple evenly distributed air holes are opened on the inner peripheral wall of the inner frame, and the air holes are interconnected with the silencing cavity.

[0006] Preferably, the outer frame has multiple card interfaces on the outer peripheral wall of the end near the flow guide frame; the end of the flow guide frame away from the noise reduction frame is horn-shaped, and the end of the flow guide frame near the noise reduction frame has multiple card blocks corresponding to the card interfaces, and the flow guide frame is snapped into the card interfaces by the card blocks.

[0007] Preferably, a positioning groove is provided at each of the four corners of the outer frame near the guide frame; and four positioning telescopic columns corresponding to the positioning grooves are provided at the end of the guide frame near the noise reduction frame, and the positioning telescopic columns can be inserted into the positioning grooves.

[0008] Preferably, the positioning telescopic column includes a limiting cylinder, a spring, a limiting plate, and a telescopic rod; the spring and the limiting plate are respectively located inside the limiting cylinder; one end of the spring is fixed to the end side wall of the limiting cylinder, and the other end is connected to one end of the limiting plate; one end of the telescopic rod is connected to the end of the limiting plate away from the spring, and the other end extends outside the limiting cylinder.

[0009] Preferably, the inner peripheral wall of the end of the guide frame away from the noise reduction frame is provided with multiple equally spaced sound-absorbing ribs, which are arranged in a wave shape.

[0010] Preferably, it also includes a rubber damping sleeve fitted over the outside of the noise reduction frame, the air guide frame and the ventilation cover.

[0011] Preferably, a plug-in frame is provided at one end of the ventilation cover near the noise reduction frame; a plug-in slot corresponding to the plug-in frame is provided on the side of the frame-shaped connecting plate away from the sound-absorbing cavity; the ventilation cover is plugged into the plug-in slot through the plug-in frame.

[0012] Preferably, it also includes a filter screen, and a receiving cavity is formed on the inner side of the plug frame; the filter screen is embedded in the receiving cavity, and when the plug frame is inserted into the plug slot, it is snapped between the frame-shaped connecting plate and the ventilation cover plate.

[0013] Preferably, a sealing strip is embedded in the insertion slot.

[0014] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0015] (1) The noise reduction corridor ventilation opening silencing device provided by this utility model is provided with a noise reduction frame, a flow guide frame and a ventilation cover plate. The noise reduction frame is provided with an outer frame and an inner frame. The outer frame is provided with a frame-shaped connecting plate. A silencing cavity for filling silencing cotton is formed between the inner peripheral wall of the outer frame and the outer peripheral wall of the inner frame. Air holes are opened on the inner peripheral wall of the inner frame. Through the cooperation of the above components, not only can the airflow of the corridor ventilation opening be effectively reduced and silenced, effectively solving the technical problem that the corridor ventilation opening is prone to generating large noise during ventilation in the prior art, but also the noise reduction corridor ventilation opening silencing device can be easily disassembled and maintained.

[0016] (2) The noise reduction corridor ventilation opening silencing device provided by this utility model has multiple snap-fit ​​interfaces on the outer frame and multiple snap-fit ​​blocks corresponding to the snap-fit ​​interfaces on the guide frame. By snapping the snap-fit ​​blocks into the snap-fit ​​interfaces, not only can the guide frame be stably connected to the outer frame, but the guide frame can also be easily disassembled and assembled to facilitate the installation and replacement of the sound-absorbing cotton in the silencing cavity. At the same time, the horn-shaped structure of the guide frame can effectively guide the airflow into the noise reduction frame, reduce airflow resistance, and improve the ventilation effect.

[0017] (3) The noise reduction corridor ventilation opening silencer provided by this utility model has a positioning groove in the outer frame and a positioning telescopic column corresponding to the positioning groove in the guide frame. Through the cooperation between the positioning groove and the positioning telescopic column, the positioning accuracy when the guide frame and the outer frame are snapped together can be improved, and the snapping interface and the snapping block can be quickly and accurately aligned. It can also further enhance the stability of the connection between the guide frame and the outer frame and prevent relative displacement between the two during use.

[0018] (4) The noise reduction corridor ventilation opening silencing device provided by this utility model has multiple equally spaced sound-absorbing protrusions in the guide frame, which can further enhance the noise reduction effect in the airflow and improve the overall silencing performance.

[0019] (5) The noise reduction corridor ventilation opening silencer provided by this utility model, due to the rubber damping sleeve, can not only be stably installed on the corridor ventilation opening, improving the overall stability of the noise reduction corridor ventilation opening silencer, but also effectively reduce the vibration generated by the noise reduction corridor ventilation opening silencer under the impact of airflow, reducing the additional noise caused by vibration.

[0020] (6) The noise reduction corridor ventilation opening silencing device provided by this utility model has a sealing strip in the insertion groove, which can effectively enhance the connection stability between the ventilation cover and the frame connecting plate, prevent the ventilation cover from vibrating under the impact of airflow, reduce the additional noise caused by vibration, and further improve the overall noise reduction performance of the noise reduction corridor ventilation opening silencing device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the prior art and the embodiments of this application, the drawings used in the description of the prior art and the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the overall structure of a noise-reducing corridor ventilation vent silencing device according to the present invention.

[0023] Figure 2 This is an exploded view of the overall structure of a noise-reducing corridor ventilation vent silencing device according to the present invention.

[0024] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0025] Figure 4 for Figure 2 A magnified view of a section at point B in the middle.

[0026] Figure 5 This is a cross-sectional view of a noise-reducing corridor ventilation vent silencing device according to the present invention.

[0027] Figure 6 for Figure 5 A magnified view of a section at point C.

[0028] Figure 7 This is a schematic diagram of the noise reduction frame in this utility model.

[0029] Figure 8 This is a cross-sectional view of the positioning telescopic column in this utility model.

[0030] Explanation of reference numerals in the attached drawings: Noise reduction frame 100, outer frame 110, frame-shaped connecting plate 111, plug-in groove 111A, sealing strip 111B, snap-fit ​​interface 112, positioning groove 113, inner frame 120, air hole 121, silencing cavity 130, flow guide frame 200, snap-fit ​​block 210, positioning telescopic column 220, limiting cylinder 221, spring 222, limiting plate 223, telescopic rod 224, sound-absorbing protrusion 230, ventilation cover plate 300, plug-in frame 310, receiving cavity 311, rubber damping sleeve 400, filter screen 500. Detailed Implementation

[0031] To better understand the purpose, structure, and function of this utility model, the following detailed description of a noise-reducing corridor ventilation vent silencing device provided by this utility model is provided in conjunction with the accompanying drawings, so that those skilled in the art can better understand and implement this utility model. However, the embodiments described are not intended to limit this utility model.

[0032] Please see Figures 1 to 8As shown in the embodiment of this application, a noise-reducing corridor ventilation opening silencing device is provided, including a noise-reducing frame 100, a flow guide frame 200, and a ventilation cover plate 300; the flow guide frame 200 and the ventilation cover plate 300 are detachably connected to both ends of the noise-reducing frame 100; the noise-reducing frame 100 includes an outer frame 110 and an inner frame 120; a frame-shaped connecting plate 111 is connected to one end of the outer frame 110 near the ventilation cover plate 300; the inner frame 120 is coaxially disposed on... The outer frame 110 is connected to the inner side of the frame-shaped connecting plate 111; a sound-absorbing cavity 130 for filling sound-absorbing cotton is formed between the inner peripheral wall of the outer frame 110 and the outer peripheral wall of the inner frame 120; the guide frame 200 is detachably connected to the end of the outer frame 110 away from the frame-shaped connecting plate 111 and covers the sound-absorbing cavity 130; a plurality of evenly distributed air holes 121 are opened on the inner peripheral wall of the inner frame 120, and the air holes 121 are interconnected with the sound-absorbing cavity 130. The ventilation cover 300 is equipped with louvers; and a plug-in frame 310 is provided at one end of the ventilation cover 300 near the noise reduction frame 100; a plug-in groove 111A corresponding to the plug-in frame 310 is provided on the side of the frame-shaped connecting plate 111 away from the noise reduction cavity 130; the ventilation cover 300 is plugged into the plug-in groove 111A through the plug-in frame 310; a threaded hole is provided at each of the four corners of the side of the frame-shaped connecting plate 111 away from the noise reduction cavity 130, and the ventilation cover 300 has four fastening holes corresponding to the threaded holes. When installing the ventilation cover 300, the plug-in frame 310 of the ventilation cover 300 is first plugged into the plug-in groove 111A, and then fastened by bolts or other fasteners passing through the fastening holes and threaded holes to ensure the stability of the connection between the ventilation cover 300 and the noise reduction frame 100.

[0033] Because it is equipped with a noise reduction frame 100, a flow guide frame 200, and a ventilation cover plate 300, and the noise reduction frame 100 is provided with an outer frame 110 and an inner frame 120, the outer frame 110 is provided with a frame-shaped connecting plate 111, and a sound-absorbing cavity 130 for filling sound-absorbing cotton is formed between the inner peripheral wall of the outer frame 110 and the outer peripheral wall of the inner frame 120, and air holes 121 are opened on the inner peripheral wall of the inner frame 120, through the cooperation of the above components, not only can the airflow of the corridor ventilation opening be effectively reduced and silenced, effectively solving the technical problem that the corridor ventilation opening is prone to generating large noise during ventilation in the prior art, but it can also facilitate the disassembly, assembly, and maintenance of the noise reduction corridor ventilation opening silencer.

[0034] Specifically, by setting up a noise reduction frame 100, a flow guide frame 200, and a ventilation cover plate 300, and detachably connecting the flow guide frame 200 and the ventilation cover plate 300 to both ends of the noise reduction frame 100, the noise reduction corridor ventilation outlet silencing equipment can be conveniently installed, disassembled, and maintained, facilitating the installation and replacement of sound-absorbing cotton or other structural components inside the silencing cavity 130. By setting the noise reduction frame 100 as an inner and outer double-layer frame structure, a silencing cavity 130 for filling with sound-absorbing cotton is formed between the inner peripheral wall of the outer frame 110 and the outer peripheral wall of the inner frame 120, thus constructing a noise reduction space. At the same time, by opening multiple evenly distributed air holes 121 on the inner peripheral wall of the inner frame 120 and connecting the air holes 121 with the silencing cavity 130, airflow can enter the silencing cavity 130 through the air holes 121, and the sound-absorbing cotton absorbs and blocks noise. When in use, the noise reduction corridor ventilation opening silencer is installed at the corridor ventilation opening. After the ventilation system is ventilating, the airflow is guided by the guide frame 200 into the noise reduction frame 100. After the noise reduction frame 100 silences and reduces the noise, the airflow is discharged through the louvered window of the ventilation cover 300, which effectively reduces the noise generated by the corridor ventilation opening during ventilation.

[0035] In a preferred embodiment, the outer frame 110 has multiple card interfaces 112 on its outer peripheral wall near the flow guide frame 200; the flow guide frame 200 is horn-shaped at the end away from the noise reduction frame 100, and multiple card blocks 210 corresponding to the card interfaces 112 are provided at the end of the flow guide frame 200 near the noise reduction frame 100, and the flow guide frame 200 is snapped into the card interface 112 by the card blocks 210.

[0036] Because the outer frame 110 has multiple snap-fit ​​interfaces 112, and the airflow guide frame 200 has multiple snap-fit ​​blocks 210 corresponding to the snap-fit ​​interfaces 112, by snapping the snap-fit ​​blocks 210 into the snap-fit ​​interfaces 112, not only can the airflow guide frame 200 be securely connected to the outer frame 110, but it can also facilitate the disassembly and assembly of the airflow guide frame 200, so as to install and replace the sound-absorbing cotton in the sound-absorbing cavity 130. At the same time, the horn-shaped structure of the airflow guide frame 200 can effectively guide airflow into the noise reduction frame 100, reduce airflow resistance, and improve ventilation effect.

[0037] In a preferred embodiment, a positioning groove 113 is provided at each of the four corners of the outer frame 110 near the guide frame 200; four positioning telescopic posts 220 corresponding to the positioning grooves 113 are provided at the end of the guide frame 200 near the noise reduction frame 100, and the positioning telescopic posts 220 can be inserted into the positioning grooves 113. The positioning telescopic post 220 includes a limiting cylinder 221, a spring 222, a limiting plate 223, and a telescopic rod 224; the spring 222 and the limiting plate 223 are located inside the limiting cylinder 221; one end of the spring 222 is fixed to the end side wall of the limiting cylinder 221, and the other end is connected to one end of the limiting plate 223; one end of the telescopic rod 224 is connected to the end of the limiting plate 223 away from the spring 222, and the other end extends outside the limiting cylinder 221. The diameter of the limiting cylinder 221 is matched with the diameter of the positioning groove 113. When the guide frame 200 is engaged with the outer frame 110, the entire positioning telescopic column 220 is located in the positioning groove 113.

[0038] Because the outer frame 110 is provided with a positioning groove 113, and the guide frame 200 is provided with a positioning telescopic post 220 corresponding to the positioning groove 113, the cooperation between the positioning groove 113 and the positioning telescopic post 220 can not only improve the positioning accuracy when the guide frame 200 and the outer frame 110 are engaged, enabling the locking interface 112 and the locking block 210 to be quickly and accurately aligned, but also further enhance the stability of the connection between the guide frame 200 and the outer frame 110, preventing relative displacement between the two during use. When the locking block 210 is engaged in the locking interface 112, the positioning telescopic post 220 is inserted into the positioning groove 113, and the telescopic rod 224 drives the limiting plate 223 to compress the spring 222. At the same time, the spring 222 generates a reverse elastic force, so that the locking block 210 is more firmly engaged in the locking interface 112, thereby improving the connection stability between the guide frame 200 and the outer frame 110 and preventing relative displacement or vibration caused by airflow impact during use, thus preventing additional noise. Furthermore, when the guide frame 200 is disassembled, after the snap-fit ​​block 210 disengages from the snap-fit ​​interface 112, the spring 222 of the positioning telescopic column 220 restores the elastic force generated by the deformation, causing the guide frame 200 to pop out from the outer frame 110, thereby facilitating the disassembly of the guide frame 200 and greatly improving the disassembly efficiency of the guide frame 200.

[0039] In a preferred embodiment, the inner peripheral wall of the guide frame 200 away from the noise reduction frame 100 is provided with a plurality of equally spaced sound-absorbing ribs 230, which are arranged in a wave shape.

[0040] Because the guide frame 200 is equipped with multiple equally spaced sound-absorbing protrusions 230, it can further enhance the reduction effect on noise in the airflow and improve the overall noise reduction performance. Specifically, when the airflow enters the guide frame 200, the wave-shaped sound-absorbing protrusions 230 increase the contact area between the airflow and the sound-absorbing protrusions 230. When the airflow flows through the undulations of the sound-absorbing protrusions 230, multiple reflections, refractions, and interferences will occur, so that the sound wave energy of the noise is continuously consumed in this process, thereby further reducing the noise intensity and enhancing the noise reduction effect.

[0041] In a preferred embodiment, a rubber damping sleeve 400 is also included, which is sleeved on the outside of the noise reduction frame 100, the flow guide frame 200 and the ventilation cover plate 300.

[0042] Because of the rubber damping sleeve 400, the noise reduction corridor ventilation vent silencer can be stably installed on the corridor ventilation vent, improving the overall stability of the noise reduction corridor ventilation vent silencer. It can also effectively reduce the vibration generated by the noise reduction corridor ventilation vent silencer under the impact of airflow, reducing the additional noise caused by vibration.

[0043] In a preferred embodiment, a filter screen 500 is also included, and a receiving cavity 311 is formed on the inner side of the insertion frame 310; the filter screen 500 is embedded in the receiving cavity 311, and when the insertion frame 310 is inserted into the insertion slot 111A, it is snapped between the frame-shaped connecting plate 111 and the ventilation cover plate 300.

[0044] Because of the filter screen 500, dust and debris in the airflow can be effectively filtered. Simultaneously, by embedding the filter screen 500 within the receiving cavity 311, and utilizing the cooperation between the insertion frame 310 and the insertion slot 111A, the filter screen 500 is secured between the frame-shaped connecting plate 111 and the ventilation cover plate 300 when the insertion frame 310 is inserted into the insertion slot 111A. This ensures a stable installation of the filter screen 500 during the installation of the ventilation cover plate 300, requiring no additional fixing parts or complex operations, making installation quick and convenient. When the filter screen 500 needs cleaning or replacement after a period of use, it can be easily removed by simply disassembling the ventilation cover plate 300, facilitating subsequent maintenance and ensuring the filter screen 500 continues to perform its filtering function effectively.

[0045] In a preferred embodiment, a sealing strip 111B is embedded in the insertion groove 111A. Because the sealing strip 111B is provided in the insertion groove 111A, the connection stability between the ventilation cover 300 and the frame-shaped connecting plate 111 is effectively enhanced, preventing vibration of the ventilation cover 300 under the impact of airflow, reducing additional noise caused by vibration, and further improving the overall noise reduction performance of the noise-reducing corridor ventilation vent silencing device.

[0046] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A noise reducing corridor vent silencing device, comprising: The system includes a noise reduction frame (100), a flow guide frame (200), and a ventilation cover plate (300); the flow guide frame (200) and the ventilation cover plate (300) are detachably connected to both ends of the noise reduction frame (100); the noise reduction frame (100) includes an outer frame (110) and an inner frame (120); a frame-shaped connecting plate (111) is connected to one end of the outer frame (110) near the ventilation cover plate (300); the inner frame (120) is coaxially disposed inside the outer frame (110) and connected to the frame-shaped connecting plate (120). The connecting plate (111) is connected; a sound-absorbing cavity (130) for filling sound-absorbing cotton is formed between the inner peripheral wall of the outer frame (110) and the outer peripheral wall of the inner frame (120); the guide frame (200) is detachably connected to the end of the outer frame (110) away from the frame-shaped connecting plate (111) and covers the sound-absorbing cavity (130); a plurality of evenly distributed air holes (121) are opened on the inner peripheral wall of the inner frame (120), and the air holes (121) are interconnected with the sound-absorbing cavity (130).

2. The noise reducing gallery vent silencing apparatus of claim 1, wherein, The outer frame (110) has multiple card slots (112) on its outer peripheral wall near the flow guide frame (200); the flow guide frame (200) is horn-shaped at the end away from the noise reduction frame (100), and the flow guide frame (200) is provided with multiple card blocks (210) corresponding to the card slots (112) at the end near the noise reduction frame (100), and the flow guide frame (200) is snapped into the card slots (112) through the card blocks (210).

3. The noise reducing gallery vent silencing apparatus of claim 2, wherein, The outer frame (110) has a positioning groove (113) at each of its four corners near the flow guide frame (200); the flow guide frame (200) has four positioning telescopic columns (220) corresponding to the positioning groove (113) at its end near the noise reduction frame (100), and the positioning telescopic columns (220) can be inserted into the positioning groove (113).

4. The noise reducing gallery vent silencing apparatus of claim 3, wherein, The positioning telescopic column (220) includes a limiting cylinder (221), a spring (222), a limiting plate (223), and a telescopic rod (224); the spring (222) and the limiting plate (223) are respectively located inside the limiting cylinder (221); one end of the spring (222) is fixed to the end side wall of the limiting cylinder (221), and the other end is connected to one end of the limiting plate (223); one end of the telescopic rod (224) is connected to the end of the limiting plate (223) away from the spring (222), and the other end extends outside the limiting cylinder (221).

5. A noise reducing gallery vent silencing device according to any one of claims 1 to 4, wherein, The inner peripheral wall of the guide frame (200) opposite to the noise reduction frame (100) is provided with multiple equally spaced sound-absorbing ribs (230), and the sound-absorbing ribs (230) are arranged in a wave shape.

6. The noise reducing gallery vent silencing apparatus of claim 5, wherein, It also includes a rubber damping sleeve (400) fitted over the outside of the noise reduction frame (100), the flow guide frame (200) and the ventilation cover plate (300).

7. The noise reducing gallery vent silencing apparatus of claim 5, wherein, The ventilation cover (300) is provided with a plug-in frame (310) at one end near the noise reduction frame (100); the frame-shaped connecting plate (111) is provided with a plug-in groove (111A) corresponding to the plug-in frame (310) on the side away from the sound-absorbing cavity (130); the ventilation cover (300) is plugged into the plug-in groove (111A) through the plug-in frame (310).

8. The noise reducing gallery vent silencing apparatus of claim 7, wherein, It also includes a filter screen (500), and a receiving cavity (311) is formed on the inner side of the plug frame (310); the filter screen (500) is embedded in the receiving cavity (311), and when the plug frame (310) is inserted into the plug groove (111A), it is snapped between the frame-shaped connecting plate (111) and the ventilation cover plate (300).

9. The noise reducing gallery vent silencing apparatus of claim 7, wherein, A sealing strip (111B) is embedded in the insertion slot (111A).

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