Novel fan silencer structure

Abstract

The utility model relates to the technical field of fan noise reduction structures, in particular to a novel fan silencer structure which comprises a shell, the left side and the right side of the shell are communicated with an inlet pipe, a first noise reduction assembly is fixedly installed in an inner cavity of the inlet pipe and comprises a wavy hose, and sound insulation cotton is fixedly bonded to the inner wall of the shell. And the left side of an inner cavity of the sound insulation cotton is fixedly connected with a second silencing assembly, the second silencing assembly comprises a sound buffering pipe, the outer surface of the sound buffering pipe is fixedly connected with an outer pipe, and the right side of an inner cavity of the outer pipe is fixedly connected with a buffering spring. The silencer solves the problems that a silencing structure is of a straight pipe type structure, an internal channel of the silencing structure is short, the transmission distance of the noise is short in the silencing process, the noise cannot be fully eliminated, and residual sound still exists in the silencer, the multiple groups of silencing structures are used for blocking the sound, so that the sound can be continuously buffered, and the silencing effect is good. And the silencing effect is effectively achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of fan silencer structure, specifically a novel fan silencer structure. Background Technology

[0002] A fan silencer is a device used to reduce the noise of fans and their exhaust systems. Its design principles include resistive sound absorption and reactive noise reduction, which can effectively control noise at different frequencies, especially mid-to-high frequency and low-frequency noise. Silencers include straight-tube type, plate type, folded plate type, honeycomb type, acoustic flow type, labyrinth type, and elbow type, etc.

[0003] A search revealed that the announcement number is CN212479711U, and the name is "A new type of convenient and practical fan silencer". It includes a silencer body. Through research and analysis, it was found that it plays a role in protecting the silencer body and silencing the fan. It performs the first silencing and the second silencing, achieving the advantage of good silencing effect. However, it also has the following disadvantages to a certain extent.

[0004] For example, the silencer structure is a straight pipe structure with a short internal channel. During the silencer process, the transmission distance of the noise is short, which means that the noise cannot be completely eliminated and there is still residual sound inside the silencer. Its practicality is generally limited. In order to solve the above technical problems, we have designed a new type of fan silencer structure. Utility Model Content

[0005] The purpose of this utility model is to provide a novel fan silencer structure with multiple noise reduction advantages. It solves the problem that the silencer structure is a straight pipe structure with a short internal channel, which results in a short noise transmission distance during the noise reduction process, leading to insufficient noise elimination and residual noise inside the silencer.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A novel fan silencer structure includes a housing, with inlet pipes connecting the left and right sides of the housing. A silencer assembly one is fixedly installed in the inner cavity of the inlet pipe, the silencer assembly one including a corrugated flexible hose. Sound insulation cotton is fixedly adhered to the inner wall of the housing. A silencer assembly two is fixedly connected to the left side of the inner cavity of the sound insulation cotton. The silencer assembly two includes a sound-absorbing tube. An outer tube is fixedly connected to the outer surface of the sound-absorbing tube. A buffer spring is fixedly connected to the right side of the inner cavity of the outer tube. A sound-absorbing plate is fixedly connected to the left side of the buffer spring. A sound-absorbing perforated plate is fixedly connected to the center of the inner cavity of the housing. A small silencer bowl and a large silencer bowl are fixedly connected to the right side of the inner cavity of the housing, respectively. An outlet pipe is fixedly connected to the right side of the housing.

[0007] Preferably, the two ends of the corrugated hose are fixedly connected to the left and right sides of the inner wall of the inlet pipe, and the surfaces of the inlet and outlet pipes are provided with mounting holes.

[0008] Preferably, the sound-absorbing tube passes through the left side of the sound-absorbing cotton and is fixedly connected to the left side of the inner cavity of the outer shell, and the sound-absorbing plate has a sound-absorbing groove on its left side.

[0009] Preferably, a connecting rod is fixedly connected to the inner wall of the corrugated hose, and a sound-absorbing ball is fixedly connected to the surface of the connecting rod.

[0010] Preferably, the sound insulation cotton is made of polyester fiber, and the corrugated hose, connecting rod and sound-absorbing ball are all made of rubber. The connecting rod is fixedly connected to the recess of the inner wall of the corrugated hose.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention uses a corrugated flexible tube to buffer the sound before it enters the outer casing. The corrugated flexible tube oscillates in a wave-like manner, causing the connecting rod and sound-absorbing ball inside to swing as the noise passes through, thus preventing the noise from resonating and reverberating. This effectively prevents the secondary transmission of noise and achieves a sound-absorbing effect. Then, the sound-dampening tube and outer tube are used to extend the sound's travel distance, allowing the sound to be continuously buffered and effectively achieving a sound-absorbing effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0015] Figure 3 This is a schematic diagram of the two-dimensional structure of the noise reduction component of this utility model. Figure 1 ;

[0016] Figure 4 This is a schematic diagram of the two-dimensional structure of the noise reduction component of this utility model. Figure 2 .

[0017] In the diagram: 1. Outer shell; 2. Sound insulation cotton; 3. Inlet pipe; 4. Silencing component one; 41. Corrugated flexible hose; 42. Connecting rod; 43. Sound-absorbing ball; 5. Silencing component two; 51. Sound-absorbing tube; 52. Outer pipe; 53. Sound-absorbing plate; 54. Sound-absorbing groove; 55. Buffer spring; 6. Sound-absorbing perforated plate; 7. Small silencer bowl; 8. Large silencer bowl; 9. Outlet pipe. Detailed Implementation

[0018] Please see Figures 1-4A novel fan silencer structure includes an outer shell 1, with inlet pipes 3 connecting the left and right sides of the outer shell 1. A silencer assembly 4 is fixedly installed inside the inlet pipe 3, and the silencer assembly 4 includes a corrugated flexible tube 41. Sound insulation cotton 2 is fixedly bonded to the inner wall of the outer shell 1. A silencer assembly 5 is fixedly connected to the left side of the inner cavity of the sound insulation cotton 2. The silencer assembly 5 includes a sound-absorbing tube 51. An outer tube 52 is fixedly connected to the outer surface of the sound-absorbing tube 51. By setting the sound-absorbing tube 51 and the outer tube 52, the sound travel can be extended, so that the sound can be fully buffered. A buffer spring 55 is fixedly connected to the right side of the inner cavity of the outer tube 52. A sound-absorbing plate 6 is fixedly connected to the left side of the buffer spring 55. A sound-absorbing perforated plate 6 is fixedly connected to the center of the inner cavity of the outer shell 1. A small silencer bowl 7 and a large silencer bowl 8 are fixedly connected to the right side of the inner cavity of the outer shell 1, respectively. By setting the small silencer bowl 7 and the large silencer bowl 8, multiple chambers can be formed, which can buffer the sound multiple times and improve the silencer effect. An outlet pipe 9 is fixedly connected to the right side of the outer shell 1.

[0019] Please see Figure 1 and Figure 2 The two ends of the corrugated hose 41 are fixedly connected to the left and right sides of the inner wall of the inlet pipe 3, and the surfaces of the inlet pipe 3 and the outlet pipe 9 are both provided with mounting holes.

[0020] Please see Figure 3 and Figure 4 The sound-absorbing tube 51 passes through the left side of the sound insulation cotton 2 and is fixedly connected to the left side of the inner cavity of the outer shell 1. The sound-absorbing plate 53 has a sound-absorbing groove 54 on its left side.

[0021] Please see Figure 1 and Figure 2 A connecting rod 42 is fixedly connected to the inner wall of the corrugated hose 41, and a sound-absorbing ball 43 is fixedly connected to the surface of the connecting rod 42.

[0022] Please see Figure 1 and Figure 2 The sound insulation cotton 2 is made of polyester fiber, while the corrugated hose 41, connecting rod 42, and sound-absorbing ball 43 are all made of rubber. The corrugated hose 41 can oscillate during sound propagation, and the connecting rod 42 is fixedly connected to the recessed part of the inner wall of the corrugated hose 41. By setting the connecting rod 42 and the sound-absorbing ball 43, it can swing during the passage of noise, so that the noise cannot resonate and swirl, thus effectively preventing the secondary propagation of noise.

[0023] In use, sound enters the corrugated hose 41 through the inlet pipe 3. The corrugated hose 41 buffers the sound before it enters the outer casing 1. The corrugated hose 41 oscillates, causing the connecting rod 42 and sound-absorbing ball 43 inside to swing as the noise passes through, thus preventing the noise from resonating and reverberating, effectively preventing secondary transmission of noise and achieving a sound-absorbing effect. Then, the sound travels through the sound-absorbing plate 53 and the sound-absorbing groove 54 on its surface. At the same time, after the sound is absorbed by the sound-absorbing plate 53, the buffer spring 55 is slightly compressed, thus buffering again. After the sound is discharged from the outer pipe 52, it is isolated by the sound insulation cotton 2. Then, it passes through the sound-absorbing perforated plate 6, the small sound-absorbing bowl 7, and the large sound-absorbing bowl 8 in sequence for multiple buffering, achieving a sound-absorbing effect.

[0024] In summary, this novel fan silencer structure, through the cooperation of the outer shell 1, sound insulation cotton 2, silencer component one 4, silencer component two 5, sound-absorbing perforated plate 6, small silencer bowl 7, and large silencer bowl 8, solves the problem that the silencer structure is a straight pipe structure with a short internal channel, resulting in a short noise transmission distance during the silencer process, which leads to insufficient noise elimination and residual sound inside the silencer.

Claims

1. A novel fan silencer structure, comprising a housing (1), characterized in that: The outer shell (1) is connected to the left and right sides by inlet pipes (3). A sound-absorbing component one (4) is fixedly installed in the inner cavity of the inlet pipe (3). The sound-absorbing component one (4) includes a corrugated flexible tube (41). Sound insulation cotton (2) is fixedly bonded to the inner wall of the outer shell (1). A sound-absorbing component two (5) is fixedly connected to the left side of the inner cavity of the sound insulation cotton (2). The sound-absorbing component two (5) includes a sound-absorbing tube (51). An outer tube (52) is fixedly connected to the outer surface of the sound-absorbing tube (51). A buffer spring (55) is fixedly connected to the right side of the inner cavity of the outer tube (52). A sound-absorbing plate (53) is fixedly connected to the left side of the buffer spring (55). A sound-absorbing perforated plate (6) is fixedly connected to the center of the inner cavity of the outer shell (1). A small sound-absorbing bowl (7) and a large sound-absorbing bowl (8) are fixedly connected to the right side of the inner cavity of the outer shell (1). An outlet pipe (9) is fixedly connected to the right side of the outer shell (1).

2. The novel fan silencer structure according to claim 1, characterized in that: The two ends of the wave hose (41) are fixedly connected to the left and right sides of the inner wall of the inlet pipe (3), and the surfaces of the inlet pipe (3) and the outlet pipe (9) are provided with mounting holes.

3. The novel fan silencer structure according to claim 1, characterized in that: The sound-absorbing tube (51) passes through the left side of the sound insulation cotton (2) and is fixedly connected to the left side of the inner cavity of the outer shell (1). The sound-absorbing plate (53) has a sound-absorbing groove (54) on its left side.

4. The novel fan silencer structure according to claim 1, characterized in that: A connecting rod (42) is fixedly connected to the inner wall of the corrugated hose (41), and a sound-absorbing ball (43) is fixedly connected to the surface of the connecting rod (42).

5. The novel fan silencer structure according to claim 1, characterized in that: The sound insulation cotton (2) is made of polyester fiber, and the corrugated hose (41), connecting rod (42) and sound-absorbing ball (43) are all made of rubber. The connecting rod (42) is fixedly connected to the recess of the inner wall of the corrugated hose (41).

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