Noise reduction structure of fan filter unit

Abstract

The utility model relates to the field of noise reduction structures, in particular to a noise reduction structure of a fan filter unit. According to the technical problems that an existing fan filtering unit usually drives whole equipment to resonate due to rotation of fan blades in the operation process, noise is easily generated in the working process, and people feel uncomfortable, compared with a traditional fan filtering unit, the fan filtering unit comprises a filtering assembly, a first noise reduction assembly, a second noise reduction assembly, a fan module and a sealing plug, by arranging the first noise reduction assembly, sound attenuation and noise reduction can be performed on a sound source to weaken noise generation, so that the volume entering the rear can be greatly reduced, then sound insulation is performed by arranging the first sound insulation plate and the second noise reduction assembly with the second sound insulation plate, and noise in the filtering module is isolated and is not prone to being transmitted out; and the fan filter unit with the noise reduction structure can effectively reduce noise pollution and improve the working environment, so that the working efficiency and the comfort degree are improved.

Description

Technical Field

[0001] The utility model relates to the field of noise reduction structures, in particular to a noise reduction structure of a fan filter unit. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. A fan filter unit is a ceiling unit with a built-in fan, used in turbulent and laminar clean rooms. The function of a fan filter unit is to provide clean air and filter out dust, bacteria and other particulate matter in the air. It is usually composed of a fan and a filter, with a unique structure and function, and can effectively filter dust, bacteria, viruses and other particulate matter in the air to ensure the air quality and environmental stability in the clean room. Existing fan filter units usually drive the overall equipment to resonate due to the rotation of the fan blades during operation, which makes it easy to generate noise during work and make people feel uncomfortable. Utility Model Content

[0003] In order to overcome the existing fan filter unit, usually during operation, the rotation of the fan blades drives the entire device to resonate, making it easy to generate noise during operation and causing discomfort to people.

[0004] The technical solution of the utility model is: a noise reduction structure of a fan filter unit, comprising a filter component, a first noise reduction component, a second noise reduction component, a fan module and a sealing plug, the outer side of the fan module is provided with a first noise reduction component for silencing, the rear end of the fan module is provided with a filter component for filtering dust, the rear end of the filter component is provided with a second noise reduction component for noise reduction, and three groups of sealing plugs are evenly distributed on the lower end sides of the filter component for easy cleaning of dust and sealing.

[0005] Preferably, by providing a first noise reduction component, the sound source can be silenced and the noise generation can be weakened, so that the volume entering the rear can be greatly reduced, and then by providing a first sound insulation board and a second noise reduction component with a second sound insulation board to perform sound insulation, the noise inside the filter module is isolated, so that the noise is not easy to be transmitted to the outside, and the outside world can hardly hear the noise. The fan filter unit with a noise reduction structure can effectively reduce noise pollution, improve the working environment, and thus improve work efficiency and comfort.

[0006] Preferably, the filter assembly includes a filter module, an outer shell, a first sound insulation board and a mounting plate. The outer side of the filter module is provided with a mounting plate for installing and fixing the filter module. The outer side of the mounting plate is fitted with a first sound insulation board for sound insulation. The outer side of the first sound insulation board is provided with an outer shell for sealing. The rear end corners of the outer shell are surrounded by limiting holes for fixing the second noise reduction assembly. The first sound insulation board can be used to isolate noise, so that noise is not easily transmitted to the outside world.

[0007] Preferably, the first noise reduction component includes a silencer hood, an annular silencer, a sound insulation layer, sound-absorbing cotton, sound-absorbing bumps, a mounting block and a sealing pad. The inner side of the silencer hood is fitted with a sound insulation layer for sound insulation, and the inner side of the sound insulation layer is fitted with sound-absorbing cotton for absorbing volume. By arranging the sound insulation layer on the inner side of the silencer hood, the noise can be isolated, and by arranging the sound-absorbing cotton on the inner side of the sound insulation layer, the noise and reverberation during the operation of the fan module can be eliminated.

[0008] Preferably, a plurality of groups of sound-absorbing protrusions for effectively absorbing and reducing the propagation of sound waves are evenly distributed on the sound-absorbing cotton, and an annular silencer for sound reduction is fitted on the inner side of one end of the sound-absorbing cover away from the filter component. By providing sound-absorbing protrusions on the sound-absorbing cotton, its surface area can be increased, thereby increasing the sound-absorbing effect of the sound-absorbing material. By providing the annular silencer, the noise emitted by the fan module can be attenuated, weakened and isolated.

[0009] Preferably, a mounting block for fixing the silencer hood is provided at one end of the silencer hood close to the filter assembly, a sealing gasket for sealing and shock absorption is provided at one end of the mounting block close to the filter assembly, and a plurality of groups of first mounting holes for fixing the mounting block are arranged around the mounting block. By arranging a sealing gasket at the connection side between the mounting block and the filter assembly at the rear end of the silencer hood, it can not only play a sealing role, but also can play a certain shock absorption role by utilizing the elasticity of the sealing gasket, thereby reducing the noise generated by vibration.

[0010] Preferably, the second noise reduction component includes a sealing cover and a second sound insulation board. The inner side of the sealing cover is fitted with a second sound insulation board for sound insulation. The surface of the second sound insulation board is evenly distributed with a plurality of air holes for increasing air permeability. By arranging the second noise reduction component at the rear end of the filter module, it can cooperate with the first sound insulation board on the inner side of the outer shell to perform sound insulation and noise reduction, so that the sound insulation effect is better.

[0011] Preferably, a plurality of through holes for ventilation are evenly distributed on the surface of the sealing cover, and second mounting holes matching the limiting holes are arranged around the four corners of the sealing cover. The second mounting holes can cooperate with the limiting holes to install and fix the sealing cover.

[0012] Beneficial effects of the utility model:

[0013] 1. Compared with the traditional fan filter unit, it can usually only be used for a certain specific inspection, and usually during operation, the rotation of the fan blades drives the resonance of the entire equipment, which makes it easy to generate noise during operation and make people feel uncomfortable. By arranging a second noise reduction component on the outside of the fan module, the noise can be greatly reduced. By arranging a sound insulation layer on the inside of the silencer, it can play a role in isolating noise. By arranging sound-absorbing cotton on the inside of the sound insulation layer, it can be used to eliminate noise and reverberation during the operation of the fan module. The sound-absorbing bumps on the surface of the sound-absorbing cotton will reflect when encountering sound waves. Scattering and interference can effectively absorb and reduce the propagation of sound waves. By arranging an annular silencer on the inner side of the air inlet of the silencer cover, the noise emitted by the fan module can be attenuated, weakened and isolated. By arranging a sealing gasket on the connecting side of the mounting block and the filter component at the rear end of the silencer cover, it can not only play a sealing role, but also use the elasticity of the sealing gasket to play a certain shock-absorbing role, thereby reducing the noise generated by vibration. Under the multiple effects of the annular silencer, sound insulation layer, sound-absorbing cotton and sealing gasket, the noise generated by the fan module can be greatly weakened, thereby playing a good noise reduction role.

[0014] By arranging a first sound insulation board between the filter module and the shell, the noise can be isolated, so that the noise is not easily transmitted to the outside world. By arranging a second noise reduction component at the rear end of the filter module, it can cooperate with the first sound insulation board on the inner side of the shell to perform sound insulation and noise reduction. By arranging a second sound insulation board on the inner side of the sealing cover, the propagation of noise can be blocked from the rear end. The first noise reduction component is used to mute and reduce the noise at the sound source to weaken the noise generation, so that the volume entering the rear is greatly reduced. Then, the first sound insulation board and the second noise reduction component with the second sound insulation board are used for sound insulation, so that the outside world can hardly hear the noise. The fan filter unit with a noise reduction structure can reduce noise pollution, improve the working environment, and improve work efficiency and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 What is shown is the overall schematic diagram of the noise reduction structure of the fan filter unit of the utility model;

[0016] Figure 2 Shown is a schematic diagram of the noise reduction structure of the fan filter unit of the utility model from another angle;

[0017] Figure 3 Shown is a schematic diagram of a filter assembly in the noise reduction structure of a fan filter unit of the utility model;

[0018] Figure 4 Shown is a schematic diagram of the first noise reduction component in the noise reduction structure of the fan filter unit of the utility model;

[0019] Figure 5Shown is a schematic diagram of the sound-absorbing cotton in the noise reduction structure of the fan filter unit of the utility model;

[0020] Figure 6 Shown is a schematic diagram of the second noise reduction component in the noise reduction structure of the fan filter unit of the utility model.

[0021] Explanation of the reference numerals: 1. filter component; 2. first noise reduction component; 3. second noise reduction component; 4. fan module; 5. sealing plug; 101. filter module; 102. housing; 103. first sound insulation board; 104. mounting plate; 105. limiting hole; 201. silencer cover; 202. annular silencer; 203. sound insulation layer; 204. sound-absorbing cotton; 205. sound-absorbing bump; 206. mounting block; 207. sealing gasket; 208. first mounting hole; 301. sealing cover; 302. second sound insulation board; 303. air vent; 304. through hole; 305. second mounting hole. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] See also Figure 1-2 The utility model provides an embodiment: a noise reduction structure of a fan filter unit, comprising a filter component 1, a first noise reduction component 2, a second noise reduction component 3, a fan module 4 and a sealing plug 5, the outer side of the fan module 4 is provided with a first noise reduction component 2 for silencing, the rear end of the fan module 4 is provided with a filter component 1 for filtering dust, the rear end of the filter component 1 is provided with a second noise reduction component 3 for noise reduction, and three groups of sealing plugs 5 are evenly distributed on the lower side of the filter component 1 for cleaning dust and sealing.

[0024] See also Figure 3 In this embodiment, the filter assembly 1 includes a filter module 101, a shell 102, a first sound insulation board 103 and a mounting plate 104. The outer side of the filter module 101 is sleeved with a mounting plate 104 for mounting and fixing the filter module 101. The outer side of the mounting plate 104 is fitted with a first sound insulation board 103 for sound insulation. The outer side of the first sound insulation board 103 is sleeved with a shell 102 for sealing. The rear end corners of the shell 102 are surrounded by limiting holes 105 for fixing the second noise reduction assembly 3. The first sound insulation board 103 can be used to isolate noise, so that the noise is not easy to be transmitted to the outside.

[0025] See also Figure 4-5In this embodiment, the first noise reduction component 2 includes a silencer cover 201, an annular silencer 202, a sound insulation layer 203, sound absorbing cotton 204, sound absorbing convex points 205, a mounting block 206 and a sealing pad 207. The inner side of the silencer cover 201 is fitted with a sound insulation layer 203 for sound insulation, and the inner side of the sound insulation layer 203 is fitted with a sound absorbing cotton 204 for absorbing volume. By arranging the sound insulation layer 203 on the inner side of the silencer cover 201, the noise can be isolated. By arranging the sound absorbing cotton 204 on the inner side of the sound insulation layer 203, the noise and reverberation during the operation of the fan module 4 can be eliminated. A plurality of groups of sound absorbing convex points 205 for effectively absorbing and reducing the propagation of sound waves are evenly distributed on the sound absorbing cotton 204. The inner side of the end of the silencer cover 201 away from the filter component 1 is fitted with a ring-shaped silencer 202 for silencing. By arranging sound-absorbing convex points 205 on the sound-absorbing cotton 204, its surface area can be increased, thereby increasing the sound-absorbing effect of the sound-absorbing material. By arranging the annular silencer 202, the noise emitted by the fan module 4 can be attenuated, weakened and isolated. The end of the silencer 201 close to the filter component 1 is provided with a mounting block 206 for mounting and fixing the silencer 201. The end of the mounting block 206 close to the filter component 1 is provided with a sealing gasket 207 for sealing and shock absorption. A plurality of groups of first mounting holes 208 for mounting and fixing the mounting block 206 are arranged around the mounting block 206. By arranging a sealing gasket 207 on the connecting side of the mounting block 206 and the filter component 1 at the rear end of the silencer 201, it can not only play a sealing role, but also can use the elasticity of the sealing gasket 207 to play a certain shock absorption role, thereby reducing the noise generated by vibration.

[0026] See also Figure 6 In this embodiment, the second noise reduction component 3 includes a sealing cover 301 and a second sound insulation board 302. The inner side of the sealing cover 301 is fitted with the second sound insulation board 302 for sound insulation. The surface of the second sound insulation board 302 is evenly provided with a plurality of air holes 303 for increasing air permeability. By arranging the second noise reduction component 3 at the rear end of the filter module 101, the first sound insulation board 103 inside the shell 102 can be used to perform sound insulation and noise reduction, so that the sound insulation effect is better. The surface of the sealing cover 301 is evenly provided with a plurality of through holes 304 for air permeability. The four corners of the sealing cover 301 are surrounded by second mounting holes 305 matching the limiting holes 105. By providing the second mounting holes 305, the sealing cover 301 can be installed and fixed by cooperating with the limiting holes 105.

[0027] When working, firstly, the first noise reduction component 2 is put on the outer side of the fan module 4, and the silencer cover 201 is fixed on the filter component 1 through the first mounting hole 208 on the mounting block 206, so that the sealing gasket 207 and the outer shell 102 of the filter component 1 are tightly fitted together;

[0028] Then, the sealing cover 301 is installed and fixed on the rear end of the filter assembly 1 through the second installation hole 305 on the sealing cover 301 and the limiting hole 105 on the housing 102;

[0029] During operation, the noise generated during the operation of the fan module 4 is eliminated and absorbed and isolated by the first noise reduction component 2, the noise is isolated by setting a sound insulation layer 203 on the inner side of the silencer 201, the noise and reverberation during the operation of the fan module 4 are eliminated by the sound-absorbing cotton 204 on the inner side of the sound insulation layer 203, the sound-absorbing convex points 205 on the surface of the sound-absorbing cotton 204 reflect, scatter and interfere with the sound waves when encountering the sound waves to absorb and reduce the propagation of the sound waves, the noise emitted by the fan module 4 is attenuated, weakened and isolated by the annular silencer 202 on the inner side of the air inlet of the silencer 201, and the sealing and shock absorption are performed by the sealing gasket 207 on the connection side of the rear end mounting block 206 of the silencer 201 and the filter component 1;

[0030] At the same time, the noise is isolated by the first sound insulation board 103 between the filter module 101 and the shell 102, and the second noise reduction component 3 at the rear end of the filter module 101 cooperates with the first sound insulation board 103 inside the shell 102 to perform noise isolation and noise reduction, and the second sound insulation board 302 inside the sealing cover 301 blocks the noise propagation from the rear end.

[0031] Through the above steps, the staff first sleeves the first noise reduction component 2 on the outside of the fan module 4, and fixes the silencer cover 201 on the filter component 1 through the first mounting hole 208 on the mounting block 206, so that the sealing gasket 207 and the outer shell 102 of the filter component 1 are tightly fitted together. By arranging the sealing gasket 207 on the connection side between the mounting block 206 at the rear end of the silencer cover 201 and the filter component 1, it can not only play a sealing role, but also use the elasticity of the sealing gasket 207 to play a certain shock-absorbing role, thereby reducing the noise generated by vibration, and then through the second mounting hole 208 on the sealing cover 301, the sealing gasket 207 can be installed on the filter component 1. The sealing cover 301 is fixed to the rear end of the filter component 1 by the mounting hole 305 and the limiting hole 105 on the shell 102. During operation, the noise generated during the operation of the fan module 4 is eliminated and absorbed and isolated by the first noise reduction component 2. The noise is isolated by setting a sound insulation layer 203 on the inner side of the silencer 201. The noise and reverberation during the operation of the fan module 4 are eliminated by the sound-absorbing cotton 204 on the inner side of the sound insulation layer 203. The sound-absorbing bumps 205 on the surface of the sound-absorbing cotton 204 reflect, scatter and interfere with the sound waves when encountering the sound waves to absorb and reduce the propagation of the sound waves. The noise generated by the fan module 4 is attenuated, weakened and isolated by the annular silencer 202 on the inner side of the air inlet of the silencer cover 201, and the sealing gasket 207 on the connection side of the filter assembly 1 and the rear end mounting block 206 of the silencer cover 201 is sealed and damped, and the noise is simultaneously isolated by the first sound insulation board 103 between the filter module 101 and the housing 102. Under the multiple effects of the annular silencer 202, the sound insulation layer 203, the sound absorbing cotton 204 and the sealing gasket 207, the noise generated by the fan module 4 can be greatly weakened, thereby playing a good role in noise reduction. 01 The second noise reduction component 3 at the rear end cooperates with the first sound insulation board 103 inside the shell 102 to perform sound insulation and noise reduction. The second sound insulation board 302 inside the sealing cover 301 blocks the noise propagation from the rear end, and the first noise reduction component 2 is used to reduce the noise at the sound source to weaken the noise generation, so that the volume entering the rear is greatly reduced, and then the first sound insulation board 103 and the second noise reduction component 3 with the second sound insulation board 302 are used for sound insulation, so that the outside world can hardly hear the noise. The fan filter unit with a noise reduction structure can reduce noise pollution, improve the working environment, and improve work efficiency and comfort.

[0032] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A fan filter unit noise reduction structure, comprising a filter assembly (1); characterized in that: The invention also comprises a first noise reduction component (2), a second noise reduction component (3), a fan module (4) and a sealing plug (5); the first noise reduction component (2) for silencing is sleeved on the outer side of the fan module (4); a filter component (1) for filtering dust is provided at the rear end of the fan module (4); a second noise reduction component (3) for reducing noise is provided at the rear end of the filter component (1); and three groups of sealing plugs (5) are evenly arranged on the lower side of the filter component (1) for cleaning dust and sealing.

2. A fan filter unit noise reduction structure according to claim 1, characterized in that: The filter assembly (1) comprises a filter module (101), an outer shell (102), a first sound insulation board (103) and a mounting plate (104); the outer side of the filter module (101) is provided with a mounting plate (104) for mounting and fixing the filter module (101); the outer side of the mounting plate (104) is provided with a first sound insulation board (103) for sound insulation; the outer side of the first sound insulation board (103) is provided with an outer shell (102) for sealing; and the rear end of the outer shell (102) is provided with limiting holes (105) for fixing a second noise reduction assembly (3) around four corners.

3. A fan filter unit noise reduction structure according to claim 1, characterized in that: The first noise reduction component (2) comprises a silencer cover (201), an annular silencer (202), a sound insulation layer (203), sound-absorbing cotton (204), sound-absorbing convex points (205), a mounting block (206) and a sealing pad (207); the inner side of the silencer cover (201) is provided with a sound insulation layer (203) for sound insulation, and the inner side of the sound insulation layer (203) is provided with sound-absorbing cotton (204) for absorbing sound volume.

4. A fan filter unit noise reduction structure according to claim 3, characterized in that: A plurality of groups of sound-absorbing convex points (205) for effectively absorbing and reducing the propagation of sound waves are evenly distributed on the sound-absorbing cotton (204), and a ring-shaped silencer (202) for silencing sound is fitted on the inner side of one end of the silencer cover (201) away from the filter assembly (1).

5. A fan filter unit noise reduction structure according to claim 4, characterized in that: An end of the silencer cover (201) close to the filter assembly (1) is provided with a mounting block (206) for mounting and fixing the silencer cover (201); an end of the mounting block (206) close to the filter assembly (1) is provided with a sealing gasket (207) for sealing and shock absorption; and a plurality of groups of first mounting holes (208) for mounting and fixing the mounting block (206) are arranged around the mounting block (206).

6. A fan filter unit noise reduction structure according to claim 1, characterized in that: The second noise reduction component (3) comprises a sealing cover (301) and a second sound insulation board (302); the inner side of the sealing cover (301) is fitted with the second sound insulation board (302) for sound insulation; and the surface of the second sound insulation board (302) is evenly distributed with a plurality of groups of air holes (303) for increasing air permeability.

7. A fan filter unit noise reduction structure according to claim 6, characterized in that: A plurality of groups of through holes (304) for ventilation are evenly distributed on the surface of the sealing cover (301), and second mounting holes (305) matching the limiting holes (105) are formed around the four corners of the sealing cover (301).

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