Noise reduction device for fan room

Abstract

The utility model discloses a noise reduction device for a fan room, and relates to the technical field of fan room noise reduction, the noise reduction device comprises a fan room, a fan body and a ground, the fan room is fixedly installed on the ground, the fan body is fixedly installed in the fan room, and the inner wall surface of the fan room is provided with a sound insulation wall surface assembly. An air inlet pipeline and an air exhaust pipeline are fixedly installed on the two side wall faces of the fan room respectively, the fan body is connected with the air inlet pipeline and the air exhaust pipeline, and noise reduction assemblies are arranged in the air inlet pipeline and the air exhaust pipeline respectively. And noise generated when the fan body works is blocked and absorbed, noise reduction is conducted on the air inlet pipeline and the exhaust pipeline through the noise reduction assembly, noise reduction treatment is conducted on the input end and the output end of the fan body when the fan body works, and the noise is prevented from polluting the working environment.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction in fan rooms, in particular to a noise reduction device for a fan room. Background Art

[0002] The fan room is a device for processing fresh air and exhaust air. The fan room will generate a lot of noise when working. Since the walls of conventional fan rooms are smooth, the noise of the fan room rebounds indoors, resulting in the problem of relatively loud noise in conventional fan rooms. There are still many shortcomings in using sound insulation boards to achieve noise reduction. The current sound insulation boards generally include double-layer vacuum boards, sponge sound-absorbing boards, etc. Although these sound insulation boards can achieve sound insulation effects to a certain extent, their sound insulation effects are not good in places where noise pollution is more serious, and the noise cannot be removed. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a noise reduction device for a fan room, which solves the problem that the walls of the existing fan room are smooth, causing the noise of the fan room to rebound indoors, thereby causing the conventional fan room to have relatively loud noise. There are still many deficiencies in using sound insulation boards to achieve noise reduction. The current sound insulation boards generally include double-layer vacuum boards, sponge sound-absorbing boards, etc. Although these sound insulation boards can achieve sound insulation effects to a certain extent, their sound insulation effects are not good in places where noise pollution is more serious, and the technical problem that the noise cannot be removed is still solved.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a noise reduction device for a fan room, comprising a fan room, a fan body and a ground, the fan room is fixedly installed on the ground, the fan body is fixedly installed in the fan room, the inner wall of the fan room is provided with a sound insulation wall component, the walls on both sides of the fan room are respectively fixedly installed with an air inlet duct and an exhaust duct, the fan body is connected to the air inlet duct and the exhaust duct, and the air inlet duct and the exhaust duct are respectively provided with noise reduction components.

[0005] Preferably, the sound insulation wall assembly includes a center plate, a plurality of corrugated holes are formed on the center plate, a plurality of blocking plates are fixedly mounted on the inner wall surface of the corrugated holes, the plurality of blocking plates are staggered with each other, perforated plates are fixedly mounted on the walls on both sides of the center plate, glass cloth is provided on the perforated plates, a sound absorbing layer is provided on the glass cloth, a damping layer is provided on the sound absorbing layer, and a steel plate is provided on the damping layer.

[0006] Preferably, the damping layer is made of asphalt asbestos wool.

[0007] Preferably, the sound absorbing layer is made of glass wool.

[0008] Preferably, the noise reduction component includes a blocking ring, which is fixedly installed on the inner wall of the air inlet duct and the exhaust duct, and the air inlet duct and the exhaust duct are inserted with sound insulation boards, the sound insulation boards are cylindrical in structure, and the air inlet duct and the exhaust duct are inserted with a box body, the box body is in contact with the sound insulation board, the box body has a vacuum structure, and a plurality of spiral pipes are fixedly installed in the box body, and both ends of the spiral pipes pass through the walls on both sides of the box body.

[0009] Preferably, a first bolt is provided between the air inlet duct and the air exhaust duct and the box body, and a second bolt is provided between the air inlet duct and the air exhaust duct and the sound insulation board.

[0010] Beneficial Effects

[0011] The utility model provides a noise reduction device for a fan room, which solves the problem that the walls of the existing fan room are smooth, causing the noise of the fan room to rebound indoors, thereby causing the noise of the conventional fan room to be relatively loud. There are still many shortcomings in using sound insulation boards to achieve noise reduction. The current sound insulation boards generally include double-layer vacuum boards, sponge sound-absorbing boards, etc. Although these sound insulation boards can achieve sound insulation effects to a certain extent, their sound insulation effects are not good in occasions where noise pollution is more serious, and the technical problem that noise cannot be removed is still solved. The utility model uses sound insulation wall components to soundproof and reduce the noise inside the fan room, so that the noise generated by the fan body when working is blocked and absorbed, and the noise reduction components are used to reduce the noise of the air inlet duct and the exhaust duct, so that the input and output ends of the fan body when working are subjected to noise reduction processing to prevent noise from polluting the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of a noise reduction device for a fan room described in the utility model.

[0013] Figure 2 The utility model is a schematic diagram of the structure of a sound insulation wall component of a noise reduction device for a fan room.

[0014] Figure 3 The utility model is a schematic diagram of the structure of the noise reduction component of the noise reduction device for a fan room.

[0015] In the figure: 1. fan room; 2. fan body; 3. air inlet duct; 4. exhaust duct; 5. center plate; 6. corrugated hole; 7. blocking plate; 8. perforated plate; 9. glass cloth; 10. sound absorbing layer; 11. damping layer; 12. steel plate; 13. blocking ring; 14. sound insulation board; 15. box body; 16. spiral duct; 17. first bolt; 18. second bolt. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-3 The utility model provides a technical solution: a noise reduction device for a fan room 1, comprising a fan room 1, a fan body 2 and a ground, the fan room 1 is fixedly installed on the ground, the fan body 2 is fixedly installed in the fan room 1, the inner wall of the fan room 1 is provided with a sound insulation wall component, the walls on both sides of the fan room 1 are respectively fixedly installed with an air inlet duct 3 and an exhaust duct 4, the fan body 2 is connected to the air inlet duct 3 and the exhaust duct 4, and the air inlet duct 3 and the exhaust duct 4 are respectively provided with noise reduction components.

[0018] The present embodiment is further configured as follows: the sound insulation wall assembly includes a central plate 5, a plurality of corrugated holes 6 are formed on the central plate 5, a plurality of blocking plates 7 are fixedly mounted on the inner wall of the corrugated holes 6, the plurality of blocking plates 7 are staggered with each other, perforated plates 8 are fixedly mounted on the walls on both sides of the central plate 5, glass cloth 9 is provided on the perforated plates 8, a sound absorbing layer 10 is provided on the glass cloth 9, a damping layer 11 is provided on the sound absorbing layer 10, and a steel plate 12 is provided on the damping layer 11.

[0019] This embodiment is further configured such that the damping layer 11 is made of asphalt asbestos wool.

[0020] This embodiment is further configured such that the sound absorbing layer 10 is made of glass wool.

[0021] The present embodiment is further configured as follows: the noise reduction component includes a blocking ring 13, the blocking ring 13 is fixedly installed on the inner wall of the air inlet duct 3 and the exhaust duct 4, a sound insulation board 14 is inserted in the air inlet duct 3 and the exhaust duct 4, the sound insulation board 14 is a cylindrical structure, a box 15 is inserted in the air inlet duct 3 and the exhaust duct 4, the box 15 is in contact with the sound insulation board 14, the box 15 is a vacuum structure, a plurality of spiral pipes 16 are fixedly installed in the box 15, and both ends of the spiral pipes 16 pass through the walls on both sides of the box 15.

[0022] This embodiment is further configured such that a first bolt 17 is provided between the air inlet duct 3 and the air exhaust duct 4 and the box body 15 , and a second bolt 18 is provided between the air inlet duct 3 and the air exhaust duct 4 and the sound insulation board 14 .

[0023] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0024] Embodiment: According to the attached drawings of the specification, when in use, during the working process of the fan, air is taken in through the air inlet duct 3 and air is discharged through the exhaust duct 4. During the air intake and exhaust process, since the fan body 2 generates noise, the noise is soundproofed and reduced through the sound insulation board 14, a part of the noise is blocked, and the noise passes through the spiral duct 16 along with the flow direction of the wind, so that the noise sound waves are refracted and absorbed in the spiral duct 16, reducing the transmission of noise to the outside, and the box body 15 is in a vacuum structure, which can also block the transmission of noise sound waves, thereby playing a noise reduction role. Since the fan body 2 itself generates noise when working, and the sound waves are transmitted from the fan room 1 to the outside, the sound first passes through the steel plate 12, and the steel plate 12 reflects a part of the sound, absorbs a part of the sound, and transmits a part of the sound to the damping layer 11. The damping layer 11 adopts asphalt asbestos wool The damping layer 11 is used to suppress the resonance and matching effect of the steel plate 12, and the damping layer 11 also absorbs part of the sound. The sound continues to penetrate into the sound-absorbing layer 10, and the sound-absorbing layer 10 further absorbs the sound. At this time, the sound passes through the sound-absorbing layer 10 and passes through the glass cloth 9 for deeper sound absorption. The sound passes through the perforated plate 8, and part of the sound is absorbed by the perforated plate 8, and the other part enters the corrugated holes 6 of the center plate 5 through the perforations. The sound waves are refracted, consumed and absorbed in the corrugated holes 6. In order to increase the number of refractions of the sound waves in the corrugated holes 6, the blocking plate 7 is added so that the sound waves can be refracted under the action of the blocking plate 7, and a part of the sound that has not been consumed passes through the corrugated holes 6 and is consumed again through the perforated plate 8, the glass cloth 9, the sound-absorbing layer 10, the damping layer 11 and the steel plate 12, thereby achieving a noise reduction effect.

[0025] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A noise reduction device for a fan room (1), comprising a fan room (1), a fan body (2) and a ground, wherein the fan room (1) is fixedly installed on the ground, and the fan body (2) is fixedly installed in the fan room (1), characterized in that: The inner wall of the fan room (1) is provided with a soundproof wall component, and the walls on both sides of the fan room (1) are respectively fixedly mounted with an air inlet duct (3) and an air exhaust duct (4), the fan body (2) is connected to the air inlet duct (3) and the air exhaust duct (4), and the air inlet duct (3) and the air exhaust duct (4) are respectively provided with noise reduction components.

2. A noise reduction device for a fan room (1) according to claim 1, characterized in that The sound insulation wall assembly comprises a central plate (5), a plurality of corrugated holes (6) are formed on the central plate (5), a plurality of blocking plates (7) are fixedly mounted on the inner wall of the corrugated holes (6), the plurality of blocking plates (7) are staggered with each other, perforated plates (8) are fixedly mounted on the wall surfaces on both sides of the central plate (5), a glass cloth (9) is provided on the perforated plates (8), a sound absorbing layer (10) is provided on the glass cloth (9), a damping layer (11) is provided on the sound absorbing layer (10), and a steel plate (12) is provided on the damping layer (11).

3. A noise reduction device for a fan room (1) according to claim 2, characterized in that The damping layer (11) is made of asphalt asbestos wool.

4. A noise reduction device for a fan room (1) according to claim 2, characterized in that , the sound absorbing layer (10) is made of glass wool.

5. A noise reduction device for a fan room (1) according to claim 1, characterized in that The noise reduction component comprises a blocking ring (13), the blocking ring (13) is fixedly mounted on the inner wall surface of the air inlet duct (3) and the exhaust duct (4), a sound insulation board (14) is inserted in the air inlet duct (3) and the exhaust duct (4), the sound insulation board (14) is a cylindrical structure, a box (15) is inserted in the air inlet duct (3) and the exhaust duct (4), the box (15) is in contact with the sound insulation board (14), the box (15) is a vacuum structure, a plurality of spiral pipes (16) are fixedly mounted in the box (15), and both ends of the spiral pipes (16) pass through the wall surfaces on both sides of the box (15).

6. A noise reduction device for a fan room (1) according to claim 1, characterized in that A first bolt (17) is provided between the air inlet duct (3) and the air exhaust duct (4) and the box body (15), and a second bolt (18) is provided between the air inlet duct (3) and the air exhaust duct (4) and the sound insulation board (14).

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