CN217873475U - Vibration and noise reduction device of centrifugal fan - Google Patents
Vibration and noise reduction device of centrifugal fan Download PDFInfo
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- CN217873475U CN217873475U CN202222459680.6U CN202222459680U CN217873475U CN 217873475 U CN217873475 U CN 217873475U CN 202222459680 U CN202222459680 U CN 202222459680U CN 217873475 U CN217873475 U CN 217873475U
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- centrifugal fan
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- silencing
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- 238000013016 damping Methods 0.000 claims abstract description 51
- 230000030279 gene silencing Effects 0.000 claims description 56
- 230000003139 buffering effect Effects 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 230000017525 heat dissipation Effects 0.000 claims description 14
- 239000000741 silica gel Substances 0.000 claims description 14
- 229910002027 silica gel Inorganic materials 0.000 claims description 14
- 229920000742 Cotton Polymers 0.000 claims description 11
- 239000006096 absorbing agent Substances 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 8
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 8
- 241001330002 Bambuseae Species 0.000 claims description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 8
- 239000011425 bamboo Substances 0.000 claims description 8
- 230000003584 silencer Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000087 stabilizing effect Effects 0.000 description 13
- 230000035939 shock Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001743 silencing effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of fans, in particular to a vibration and noise reduction device of a centrifugal fan, which comprises a centrifugal fan body, wherein the centrifugal fan body comprises a driving motor, a volute and an impeller, the impeller is fixedly sleeved on an output shaft of the driving motor, the driving motor is connected with one side surface of the volute, and the impeller is rotatably connected with the inside of the volute; the vibration damping device is arranged below the centrifugal fan body and comprises a base, a volute vibration damping assembly and a motor vibration damping assembly, and the volute vibration damping assembly and the motor vibration damping assembly are arranged on the base and are respectively connected with the lower ends of the volute and the driving motor; the noise reduction device comprises a first noise reduction pipe and a second noise reduction pipe which are respectively arranged at an air inlet and an air outlet of the volute, and further comprises a noise reduction cover which is covered outside the volute and the driving motor, wherein a yielding hole is formed in the noise reduction cover so that the first noise reduction pipe and the second noise reduction pipe can extend out of the noise reduction cover, and the comprehensive vibration reduction and noise reduction effects can be achieved.
Description
Technical Field
The utility model belongs to the technical field of the fan, concretely relates to device of making an uproar falls in centrifugal fan damping.
Background
The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.
However, the existing centrifugal fan has certain defects: the existing centrifugal fan can generate larger vibration, when the fan works, the fan parts can be loosened due to long-time large-amplitude vibration, the fan is damaged, and the mechanical vibration noise of the fan is overlarge; the existing centrifugal fan has large noise, and the fan generates large noise to influence not only the surrounding environment but also the normal work of workers, so that the work efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a device of making an uproar falls in centrifugal fan damping to solve the problem that current fan produced the noise in the use.
The utility model adopts the technical scheme as follows: a vibration and noise reduction device of a centrifugal fan comprises a centrifugal fan body, wherein the centrifugal fan body comprises a driving motor, a volute and an impeller, the impeller is fixedly sleeved on an output shaft of the driving motor, the driving motor is connected with one side surface of the volute, and the impeller is rotatably connected with the inside of the volute;
the vibration damping device is arranged below the centrifugal fan body and comprises a base, a volute vibration damping assembly and a motor vibration damping assembly, and the volute vibration damping assembly and the motor vibration damping assembly are arranged on the base and are respectively connected with the lower ends of the volute and the driving motor;
the noise reduction device comprises a first silencing pipe and a second silencing pipe which are respectively arranged at an air inlet and an air outlet of the volute, and further comprises a silencing cover which is covered outside the volute and the driving motor, wherein a abdicating hole is formed in the silencing cover for the first silencing pipe and the second silencing pipe to extend out of the silencing cover.
Furthermore, the volute vibration reduction assembly comprises a vibration reduction groove and a silica gel pad, the vibration reduction groove is formed in the upper surface of the base, the silica gel pad is bonded on the inner wall of the vibration reduction groove, and the volute can be clamped into the vibration reduction groove and tightly attached to the inner wall of the silica gel pad.
Further, the motor vibration reduction assembly comprises a supporting plate, vibration absorbers and a buffering supporting seat, the upper end of the supporting plate is fixedly connected with the lower end of the driving motor, the lower surface of the supporting plate is connected with the vibration absorbers and the buffering supporting seat, the buffering supporting seat is arranged at four corners of the lower surface of the supporting plate, the supporting plate is connected with the base through the buffering supporting seat, the vibration absorbers are arranged on the inner side of the buffering supporting seat, and the lower end of each vibration absorber is fixed with the base.
Furthermore, the buffering supporting seat comprises a supporting rod, a buffering cushion and a stabilizing cylinder with an open upper end, the lower end of the stabilizing cylinder is fixed at the upper end of the base, the supporting rod can be vertically slidably arranged in the stabilizing cylinder, the upper end of the supporting rod penetrates out of the stabilizing cylinder and is fixed with the lower surface of the supporting plate, a circle of limiting shaft shoulder is arranged at the lower end of the supporting rod, a circle of limiting convex edge is formed by protruding the upper end of the stabilizing cylinder circumferentially to prevent the supporting rod from being separated from the upper end of the supporting rod, the lower end of the supporting rod is connected with the buffering cushion, and the buffering cushion is fixedly arranged in the stabilizing cylinder.
Further, a radiating piece is arranged in the silencing cover and comprises a radiating fan and a first silencing shutter, the radiating fan is arranged above the driving motor, and the first silencing shutter is arranged below the radiating fan.
Further, a second noise reduction shutter is installed outside the heat dissipation fan.
Furthermore, sound absorption cotton is bonded on the inner wall of the silencing cover.
Furthermore, sound absorption cotton is bonded on the inner peripheral walls of the first silencing pipe and the second silencing pipe.
The utility model has the advantages that:
the volute vibration damping assembly is used for buffering and damping the volute and the motor vibration damping assembly is used for buffering and damping the driving motor through the matching of the vibration damping device, the base, the volute vibration damping assembly and the motor vibration damping assembly, and when the centrifugal fan runs, noise generated by mechanical vibration of the volute and the driving motor can be effectively reduced; through the cooperation use of first hush pipe, second hush pipe and hush cover, hush cover controls the noise source in an airtight space, controls the outward propagation of noise source, and first hush pipe and second hush pipe inhale the sound and fall the noise to the noise that spiral case air intake and air outlet department gas flow produced to it falls to synthesize the effect of making an uproar to reduce the vibration.
Drawings
Fig. 1 is a partial cross-sectional view of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 3 is a schematic perspective view of the present invention (the silencing cover is not shown in the figure);
the drawings are labeled as follows:
the centrifugal fan comprises a centrifugal fan body 1, a driving motor 11, a volute 12, an impeller 13, a vibration damper 2, a base 21, a vibration damper groove 22, a silica gel pad 23, a support plate 24, a vibration damper 25, a buffer support seat 26, a support rod 261, a buffer pad 262, a stabilizing cylinder 263, a limiting shaft shoulder 264, a limiting convex edge 265, a noise reduction device 3, a first silencing pipe 31, a second silencing pipe 32, a silencing cover 33, a sound absorption cotton 34, a heat dissipation piece 4, a heat dissipation fan 41, a first silencing shutter 42 and a second silencing shutter 43.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 3, a vibration and noise reduction device for a centrifugal fan comprises a centrifugal fan body 1, wherein the centrifugal fan body 1 comprises a driving motor 11, a volute 12 and an impeller 13, the impeller 13 is fixedly sleeved on an output shaft of the driving motor 11, the driving motor 11 is connected with one side surface of the volute 12, and the impeller 13 is rotatably connected with the inside of the volute 12;
the vibration damping device 2 is arranged below the centrifugal fan body 1, the vibration damping device 2 comprises a base 21, a volute 12 vibration damping assembly and a motor vibration damping assembly, and the volute 12 vibration damping assembly and the motor vibration damping assembly are arranged on the base 21 and are respectively connected with the lower ends of the volute 12 and the driving motor 11;
the noise reduction device 3 comprises a first silencing pipe 31 and a second silencing pipe 32 which are respectively arranged at an air inlet and an air outlet of the volute 12, and further comprises a silencing cover 33 which covers the volute 12 and the driving motor 11, wherein a yielding hole is formed in the silencing cover 33, so that the first silencing pipe 31 and the second silencing pipe 32 can extend out of the silencing cover 33.
By adopting the technical scheme, the vibration damping device 2, the base 21, the volute 12 vibration damping assembly and the motor vibration damping assembly are matched for use, the volute 12 vibration damping assembly performs buffering vibration damping on the volute 12, the motor vibration damping assembly performs buffering vibration damping on the driving motor 11, and when the centrifugal fan operates, noise generated by mechanical vibration of the volute 12 and the driving motor 11 can be effectively reduced; through the cooperation use of first hush pipe 31, second hush pipe 32 and hush cover 33, hush cover 33 controls the noise source in an airtight space, controls the outward propagation of noise source, and first hush pipe 31 and second hush pipe 32 inhale the sound and fall the noise to the noise that volute 12 air intake and air outlet department gas flow produced to reach the effect of synthesizing the damping and falling the noise.
Preferably, the vibration reduction assembly of the volute 12 comprises a vibration reduction groove 22 and a silica gel pad 23, the vibration reduction groove 22 is arranged on the upper surface of the base 21, the silica gel pad 23 is bonded on the inner wall of the vibration reduction groove 22, and the volute 12 can be clamped into the vibration reduction groove 22 and tightly attached to the inner wall of the silica gel pad 23. Through the cooperation use of damping groove 22 and silica gel pad 23 for spiral case 12 card is gone into in damping groove 22, and the fan during operation, damping groove 22 and silica gel pad 23 also can absorb a part of noise to a certain extent simultaneously in the effect that can play the damping and cushion, at the same time
Preferably, the motor vibration damping assembly comprises a support plate 24, a plurality of vibration dampers 25 and a buffer support seat 26, the upper end of the support plate 24 is fixedly connected with the lower end of the driving motor 11, the lower surface of the support plate 24 is connected with the plurality of vibration dampers 25 and the buffer support seat 26, the buffer support seat 26 is arranged at four corners of the lower surface of the support plate 24, the support plate 24 is connected with the base 21 through the buffer support seat 26, the vibration dampers 25 are arranged on the inner side of the buffer support seat 26, and the lower end of the vibration dampers 25 is fixed with the base 21. Use through the cooperation of backup pad 24, shock absorber 25 and buffering supporting seat 26, at centrifugal fan operation in-process, 11 mechanical vibration of driving motor and produce great noise to give the backup pad 24 of lower extreme with the vibration transmission, the shock absorber 25 and the cooperation of buffering supporting seat 26 of backup pad 24 lower extreme are used, can effectually cushion the damping to driving motor 11 and backup pad 24, effectively reduce the frequency and the range of its vibration.
Preferably, the buffering support seat 26 includes a support rod 261, a buffering pad 262 and a stabilizing cylinder 263 with an open upper end, the lower end of the stabilizing cylinder 263 is fixed to the upper end of the base 21, the support rod 261 is vertically slidably disposed in the stabilizing cylinder 263, the upper end of the support rod 261 penetrates through the stabilizing cylinder 263 and is fixed to the lower surface of the support plate 24, a ring of limiting shaft shoulder 264 is disposed at the lower end of the support rod 261, a ring of limiting ledge 265 is formed by protruding the inner circumference of the upper end of the stabilizing cylinder 263 to prevent the support rod 261 from being disengaged from the upper end thereof, the lower end of the support rod 261 is connected to the buffering pad 262, and the buffering pad 262 is fixedly disposed in the stabilizing cylinder 263. Through the cooperation use of bracing piece 261, blotter 262 and a stable section of thick bamboo 263 for driving motor 11 during the operation vibration, backup pad 24 vibrates from top to bottom, and bracing piece 261 moves about in a stable section of thick bamboo 263 under the effect of blotter 262, and blotter 262 adopts the rubber material to make, can keep backup pad 24 and driving motor 11's stability in the buffering.
Preferably, a heat dissipation member 4 is disposed in the noise reduction cover 33, the heat dissipation member 4 includes a heat dissipation fan 41 and a first noise reduction louver 42, the heat dissipation fan 41 is disposed above the driving motor 11, and the first noise reduction louver 42 is disposed below the heat dissipation fan 41. By arranging the heat radiation fan 41 and the first silencing louver 42 in the silencing cover 33, good heat radiation and silencing effects in the silencing cover 33 are ensured.
Preferably, a second silencing louver 43 is installed outside the heat dissipation fan 41. By installing the second noise reduction louver outside the heat dissipation fan 41, noise generated by the heat dissipation fan 41 can be absorbed.
Preferably, sound absorbing cotton 34 is adhered to the inner wall of the sound-deadening cover 33. The sound absorption cotton 34 is used for absorbing the noise generated during the operation of the centrifugal fan.
Preferably, sound absorbing cotton 34 is bonded to the inner circumferential walls of the first and second muffling pipes 31 and 32. The sound absorption cotton 34 is used for absorbing the noise generated at the air inlet and the air outlet of the volute 12.
The utility model discloses a working method as follows:
when the centrifugal fan is used, the centrifugal fan is started to operate, the supporting plate 24, the shock absorber 25 and the buffer supporting seat 26 below the driving motor 11 are matched for use, the vibration generated by the driving motor 11 can be effectively reduced, meanwhile, the shock absorption groove 22 matched with the volute 12 is formed in the base 21, the silica gel pad 23 is bonded in the shock absorption groove 22, the shock absorption groove 22 can support the volute 12, and the silica gel pad 23 can buffer and absorb the volute 12 and absorb a part of noise generated by mechanical vibration; when the centrifugal fan operates, the driving motor 11 drives the impeller 13 to rotate, the generated wind enters the first silencing pipe 31 and is discharged through the second silencing pipe 32, silencing cotton is arranged in the first silencing pipe 31 and the second silencing pipe 32 and can absorb the generated noise, the silencing cover 33 controls a noise source in a closed space, controls the outward transmission of the noise source and absorbs the noise through the sound absorbing cotton 34 in the silencing cover 33; the heat dissipation fan 41, the first silencing shutter 42 and the second silencing shutter 43 which are arranged on the silencing cover 33 can quickly discharge heat generated by the centrifugal fan out of the silencing cover 33, so that good heat dissipation and silencing effects in the silencing cover 33 are guaranteed, and the service life of the centrifugal fan is prolonged.
The present invention has been described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the scope of the appended claims.
Claims (8)
1. The utility model provides a device of making an uproar falls in centrifugal fan damping which characterized in that: comprises that
The centrifugal fan comprises a centrifugal fan body (1), wherein the centrifugal fan body (1) comprises a driving motor (11), a volute (12) and an impeller (13), the impeller (13) is fixedly sleeved on an output shaft of the driving motor (11), the driving motor (11) is connected with one side surface of the volute (12), and the impeller (13) is rotatably connected with the inside of the volute (12);
the vibration damping device (2) is arranged below the centrifugal fan body (1), the vibration damping device (2) comprises a base (21), a volute (12) vibration damping assembly and a motor vibration damping assembly, and the volute (12) vibration damping assembly and the motor vibration damping assembly are arranged on the base (21) and are respectively connected with the lower ends of the volute (12) and the driving motor (11);
the noise reduction device (3) comprises a first silencing pipe (31) and a second silencing pipe (32) which are respectively arranged at an air inlet and an air outlet of the volute (12), and further comprises a silencing cover (33) which is covered outside the volute (12) and the driving motor (11), wherein a yielding hole is formed in the silencing cover (33) to enable the first silencing pipe (31) and the second silencing pipe (32) to stretch out of the silencing cover (33).
2. The vibration and noise reduction device for the centrifugal fan according to claim 1, wherein: spiral case (12) damping subassembly includes damping groove (22) and silica gel pad (23), damping groove (22) set up the upper surface at base (21), it has to bond on damping groove (22) inner wall silica gel pad (23), spiral case (12) can block into in damping groove (22) and hug closely mutually with silica gel pad (23) inner wall.
3. The vibration and noise reduction device for the centrifugal fan according to claim 1, wherein: the motor vibration reduction assembly comprises a supporting plate (24), vibration absorbers (25) and buffer supporting seats (26), the upper end of the supporting plate (24) is fixedly connected with the lower end of a driving motor (11), the lower surface of the supporting plate (24) is connected with the vibration absorbers (25) and the buffer supporting seats (26), the buffer supporting seats (26) are arranged at four corners of the lower surface of the supporting plate (24), the supporting plate (24) is connected with a base (21) through the buffer supporting seats (26), the vibration absorbers (25) are arranged on the inner side of the buffer supporting seats (26), and the lower ends of the vibration absorbers (25) are fixed with the base (21).
4. The vibration and noise reduction device for the centrifugal fan according to claim 3, wherein: buffering supporting seat (26) are the stable section of thick bamboo (263) of uncovered setting including bracing piece (261), blotter (262) and upper end, stable section of thick bamboo (263) lower extreme is fixed in base (21) upper end, but bracing piece (261) vertical slip's setting is in stable section of thick bamboo (263), bracing piece (261) upper end is worn out stable section of thick bamboo (263) and is fixed with backup pad (24) lower surface, is equipped with spacing shaft shoulder (264) of round at the lower extreme of bracing piece (261), the interior circumference of stable section of thick bamboo (263) upper end is inwards extrudeed and is formed spacing protruding edge (265) of round in order to prevent that bracing piece (261) break away from its upper end, and bracing piece (261) lower extreme is connected with blotter (262), and blotter (262) are fixed to be set up in stable section of thick bamboo (263).
5. The vibration and noise reduction device for the centrifugal fan according to claim 1, wherein: the novel silencer is characterized in that a radiating piece (4) is arranged in the silencing cover (33), the radiating piece (4) comprises a radiating fan (41) and a first silencing shutter (42), the radiating fan (41) is arranged above the driving motor (11), and the first silencing shutter (42) is arranged below the radiating fan (41).
6. The vibration and noise reduction device for the centrifugal fan according to claim 5, wherein: and a second silencing shutter (43) is arranged outside the heat dissipation fan (41).
7. The vibration and noise reduction device for the centrifugal fan according to claim 1, wherein: and sound absorption cotton (34) is adhered to the inner wall of the silencing cover (33).
8. The vibration and noise reduction device for the centrifugal fan according to claim 1, wherein: and sound absorption cotton (34) are bonded on the inner circumferential walls of the first silencing pipe (31) and the second silencing pipe (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222459680.6U CN217873475U (en) | 2022-09-16 | 2022-09-16 | Vibration and noise reduction device of centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222459680.6U CN217873475U (en) | 2022-09-16 | 2022-09-16 | Vibration and noise reduction device of centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217873475U true CN217873475U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222459680.6U Active CN217873475U (en) | 2022-09-16 | 2022-09-16 | Vibration and noise reduction device of centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217873475U (en) |
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2022
- 2022-09-16 CN CN202222459680.6U patent/CN217873475U/en active Active
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Effective date of registration: 20231120 Address after: 530000 units 501, 502, 503, 505, 5th floor, Building 2, Nanning International Tourism Center, No. 111 Fengling North Road, Qingxiu District, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: Wanjitai Technology Group Digital City Technology Co.,Ltd. Address before: 400050 Chongqing Jiulongpo District Erlang Kecheng Road Chongqing International Student Entrepreneurship Park 11-3 # Patentee before: CHONGQING RONGGUAN TECHNOLOGY Co.,Ltd. |
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