CN206071906U - A kind of low-noise cabinet type centrifugal fan - Google Patents
A kind of low-noise cabinet type centrifugal fan Download PDFInfo
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- CN206071906U CN206071906U CN201620952911.9U CN201620952911U CN206071906U CN 206071906 U CN206071906 U CN 206071906U CN 201620952911 U CN201620952911 U CN 201620952911U CN 206071906 U CN206071906 U CN 206071906U
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- casing
- impeller
- noise
- air
- centrifugal fan
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Abstract
The utility model discloses a kind of low-noise cabinet type centrifugal fan, including casing, the air inlet for being arranged on casing side, the air outlet for being arranged on casing opposite side, the impeller being rotatably connected on the casing of the air outlet side, it is located on the casing and between the air outlet and the air inlet, is provided with multiple support bars, it is formed between two support bars and the cabinet wall of arbitrary neighborhood and isolates frame, acoustical cotton layer is provided with the isolation frame, the filter mouth for airflow in the acoustical cotton layer, is formed with.This utility model has advantages below and effect：Acoustical cotton layer can have the effect of water conservancy diversion so that the air-flow that Jing filters mouth is more steady, can reduce the noise produced when acting on impeller；Snail tongue is inclined to set can reduce noise by reducing active area of the air-flow in snail tongue；Filter screen can also cause air-flow more steady when entering in casing.
Description
Technical field
This utility model is related to fire-fighting exhaust equipment field, more particularly to a kind of low-noise cabinet type centrifugal fan.
Background technology
Low-noise cabinet type centrifugal fan is to adapt to wanting for air-conditioning growing at present, purified industrial and environmentally friendly noise reduction
Ask, on the premise of digesting, absorbing domestic and international advanced technology, the principle combined with aerodynamics and aeroacoustics, again
The successful new product of development and design, with air quantity it is big, total head is high, noise is low, vibrate it is little the features such as, meet environmental conservation and work
The requirement of protection.
At present, on market, Authorization Notice No. is CN202001388U, and authorized announcement date is that the China on October 5th, 2011 is special
Profit discloses a kind of low-noise cabinet type centrifugal fan, including casing, the blower fan in casing and the electricity outside casing
Machine, the current collector of noise elimination panel and draught fan impeller two ends in the housing of casing is produced when can effectively reduce blower fan work to make an uproar
Sound.Described casing is provided with air inlet and air outlet, and casing and motor are fixed on base, and base has certain vibration-damping function,
Blower fan and motor vibrating noise produced when working can effectively be reduced.Design is unique, and simple structure is elegant in appearance, on the one hand
The vibrating noise that blower fan and motor are produced when working is reduced, is produced due to air current flow when on the other hand reducing blower fan work
Raw noise, it is convenient and practical.
The noise of generation when centrifugal blower operates, mainly includes air flow power noise and mechanical noise two parts,
Wherein air flow power noise Producing reason include fans entrance air-flow and the unstable interaction and impeller between this
Individual reason.This low-noise cabinet type centrifugal fan is by taking noise elimination panel, arranging current collector, casing at the two ends of draught fan impeller
It is fixed on base with motor, reduces the vibrating noise that blower fan and motor are produced when working, but air-flow flows in casing
When it is jiggly, reduce noise effect be not fine.
Utility model content
The purpose of this utility model is to provide a kind of low-noise cabinet type centrifugation wind of the effect with good reduction noise
Machine.
Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of low-noise cabinet type from
Heart-wind syndrome machine, including casing, be arranged on the air inlet of casing side, be arranged on the air outlet of casing opposite side, be rotatably connected on institute
The impeller on the casing of air outlet side is stated, is located on the casing and is provided between the air outlet and the air inlet
Multiple support bars, are formed between two support bars and the cabinet wall of arbitrary neighborhood and isolate frame, the isolation frame
On be provided with acoustical cotton layer, the filter mouth for airflow is formed with the acoustical cotton layer.
By adopting such scheme, the interior of multiple support bars, two adjacent support bars and casing is provided with casing
Isolation frame is formed between wall, isolation inframe acoustical cotton layer is provided with, in wheel rotation, after air-flow is entered from air inlet
Entered on impeller by the filter mouth on acoustical cotton layer again, during air-flow Jing filters mouth so that what air-flow became more puts down
Surely, so as to reduce the interaction and impeller between, play a part of to reduce noise.Meanwhile, acoustical cotton layer can also play suction
Receive the effect of noise so that noise when centrifugal blower works is less.
It is of the present utility model to be further arranged to：The acoustical cotton layer is in prism-frustum-shaped and arranges towards air outlet side, described
Filter mouth is also arranged in prism-frustum-shaped, and in the acoustical cotton layer both ends of the surface, the larger one end of area is connected on the isolation frame, described
In the both ends of the surface of filter mouth, the larger one end of area is near the isolation frame.
Arranged in prism-frustum-shaped by adopting such scheme, acoustical cotton layer, when airflow, air-flow is from air inlet
One end flow towards one end of air outlet, one end of acoustical cotton layer is connected on isolation frame and sets towards the side of air outlet
Put, active force of the air-flow in circulation to acoustical cotton layer can be reduced, while the filter mouth on acoustical cotton layer is near air inlet
The face area of side is larger, can play a part of afflux, will be risen when being extracted by wheel rotation in chaotic air flow collection
Come, so as to reduce active force of the air-flow to impeller, reduce the purpose of noise.
It is of the present utility model to be further arranged to：The upper end for filtering the less one end of open area is existed with the upper end of the impeller
In same level, the lower end for filtering the lower end of the less one end of area and the impeller on mouth is also in same level.
By adopting such scheme, on the filter less end face of open area, upper and lower ends respectively with impeller up and down two
End is in same level so that the opening phase of the scope of in the vertical direction and filter mouth in the vertical direction during wheel rotation
Together, can enter directly on impeller from the air that flows through in filter mouth, it is to avoid because opening it is larger when, impeller can be by band when rotating
Stream of taking offence is entered from different directions, can reduce the active force between air-flow and impeller.
It is of the present utility model to be further arranged to：Two ends near the casing of the air outlet side are provided with base
Seat, the impeller are fixed in a rotating shaft, and the two ends of the rotating shaft are rotatably connected on the base described in two ends respectively by bearing block
On seat.
It is fixed in rotating shaft by adopting such scheme, impeller, rotating shaft is fixed on the setting of frame both sides by bearing block
On pedestal so that impeller can be rotated on pedestal, while pedestal has certain shock-absorbing function, can effectively reduce
The vibrating noise that impeller is produced when rotating.
It is of the present utility model to be further arranged to：The impeller is included and is fixed on the cover plate of the rotating shaft both sides, multiple
Be connected to described in both sides between cover plate and circumferential array distribution blade, the blade is with the rotating shaft not at grade.
By adopting such scheme, in multiple blades for arranging between two cover plates and rotating shaft not same plane so that
Blade is inclined between two cover plates, when in airflow strikes to blade, can be reduced between air-flow and blade
Contact area, so as to reduce the noise that airflow strikes occur to blade.
It is of the present utility model to be further arranged to：The lower end of the air outlet is provided with snail tongue, the impeller is located at
In the snail tongue, the snail tongue is tiltedly installed with the casing.
By adopting such scheme, in cyclically-varying, this phenomenon is called gas, gas for the pressure of air-flow and motion
Periodically pulsing air-flow power and snail tongue interaction formula produced by stream pulsation can produce rotational noise, the size and arteries and veins of this noise
Take offence power severe degree it is relevant with the front face area of snail tongue, snail tongue is made tilting so that pulsation aerodynamic force effect
Area reduces, so as to the noise of radiation is also just reduced.
It is of the present utility model to be further arranged to：Side in the snail tongue near the impeller is provided with acoustic resonance
Device.
By adopting such scheme, acoustic resonator, when sound wave passes to acoustic resonator, aperture hole are set at snail tongue
Gas in Jing and cavity, can move back and forth in the presence of sound wave, and it resists the motion caused due to acoustic wave action, together
When Shi Shengbo enters aperture pore-throat, due to the friction and damping of neck wall so that quite a few acoustic energy is lost because of heat consumption.Separately
Outward, gassiness cavity has the characteristic for hindering the pressure change from aperture, due to the collective effect of these factors, works as gas
When stream is by resonator, noise can be reduced.
It is of the present utility model to be further arranged to：The air inlet is provided with filter screen, the filter on the casing
Net is covered on the filter mouth.
By adopting such scheme, filter mouth is covered in the filter screen of the upper setting of casing, can play the work of filtered airflow
With while filter screen can play a part of to hinder air-flow to a certain extent so that air-flow is relatively more flat after filter screen
Surely, by increasing capacitance it is possible to increase the stationarity of air-flow.
In sum, this utility model has the advantages that：Acoustical cotton layer can have the effect of water conservancy diversion so that pass through
The air-flow of filter mouth is more steady, can reduce the noise produced when acting on impeller；Snail tongue is inclined to set can be by subtracting
Active area of the little airflow in snail tongue is so as to reducing noise；Filter screen can also cause air-flow more to put down when entering in casing
Surely.
Description of the drawings
Fig. 1 is schematic arrangement schematic diagram of the present utility model；
Fig. 2 is the structural representation of impeller in this utility model；
Fig. 3 is the structural representation in this utility model between acoustical cotton layer, support bar.
In figure：1st, casing；2nd, air inlet；3rd, air outlet；4th, impeller；5th, support bar；6th, isolate frame；7th, acoustical cotton layer；8、
Filter mouth；9th, pedestal；10th, rotating shaft；11st, bearing block；12nd, cover plate；13rd, blade；14th, snail tongue；15th, acoustic resonator；16th, filter screen；
17th, motor.
Specific embodiment
This utility model is described in further detail to accompanying drawing 3 below in conjunction with accompanying drawing 1.
A kind of low-noise cabinet type centrifugal fan, as shown in Fig. 1 to Fig. 3, is provided with air inlet 2 in the side of casing 1, in case
The opposite side of body 1 is provided with air outlet 3, is provided with the impeller 4 of the linkage of motor 17 in 3 side of air outlet, in air outlet 3 and enters
Acoustical cotton layer 7 is provided with casing 1 between air port 2.
As shown in figure 1, being air inlet 2 in the side of casing 1, air inlet 2 is positioned at the middle part of 1 side wall of casing, air inlet 2
The square setting in section, be provided with filter screen 16 on the casing 1 at air inlet 2, filter screen 16 is directly by being bonded in case
On the inwall of body 1, and filter screen 16 has covered whole air inlet 2.
As shown in figures 1 and 3, the middle part of casing 1 is provided with multiple support bars 5, bracing frame is vertically arranged in casing 1
Up and down on the inwall of both sides and arranged distribution, the two ends of support bar 5 are fixed in casing 1, in any two by way of welding
Define between adjacent support bar 5 and the upper and lower ends inwall of casing 1 one isolation frame 6, both sides support bar 5 then with case
The upper and lower ends inwall of body 1 and the inwall of side form isolation frame 6.
Acoustical cotton layer 7 is provided with isolation frame 6, acoustical cotton layer 7 is made by acoustical cotton, and acoustical cotton layer 7 is in terrace with edge
Shape is fixed on isolation frame 6, and in 7 two ends of acoustical cotton layer, the larger end face of area is fixed on isolation frame 6 and another by glue
One end is directed away from the setting of 2 side of air inlet, and a filter mouth 8 is offered in acoustical cotton layer 7, and filter mouth 8 is also to set in prism-frustum-shaped
Put, and the larger end face of area is also distributed away from the side of air inlet 2 in the both ends of the surface of filter mouth 8.
As depicted in figs. 1 and 2, one end for being relatively distant from air inlet 2 of casing 1 be air outlet 3, under air outlet 3
End is provided with a snail tongue 14, and impeller 4 is rotatably connected in the frame of 14 lower end of snail tongue, and impeller 4 is driven by motor 17
, 14 curved shape of snail tongue and it is obliquely installed, the 4 concentric setting of snail tongue 14 and impeller.Near one end of impeller 4 in snail tongue 14
Acoustic resonator 15 is additionally provided with face.
The two ends of 3 lower end casing 1 of air outlet are provided with pedestal 9, two impellers 4, two impellers are provided with pedestal 9
4 are fixed in rotating shaft 10, and impeller 4 includes the cover plate 12 for being welded on 10 both sides of rotating shaft and is welded on many between two cover plates 12
Individual blade 13.The two ends of the rotating shaft 10 on impeller 4 are fixed in bearing block 11, and bearing block 11 is fixed on pedestal 9 again.At two
Blade 13 between cover plate 12 is inclined to set, and 13 circumferential array of blade is distributed in the week side of boss between two cover plates 12, rotating shaft 10
Axis and blade 13 not at grade.The upper end of the filter mouth 8 of the upper end of impeller 4 and close 13 side of blade is same
On horizontal plane, the upper and lower side of the filter mouth 8 of the lower end of blade 13 and close 13 side of blade is in same level.
As shown in Fig. 1 to Fig. 3, when low-noise cabinet type centrifugal fan works, first passing through the drive of motor 17 and impeller 4 is carried out
Rotate, when impeller 4 is rotated, when air vane 4 is rotated, form an air-flow.Air-flow first enters casing from the side of air inlet 2
1, air-flow into when can first run into filter screen 16, filter screen 16 can play a part of filtered airflow, while filter screen 16 can
Can play a part of to a certain extent to hinder air-flow so that air-flow enters rear comparison steadily in by filter screen 16, can
Increase the stationarity of air-flow；Then more smoothly air-flow passes through to filter mouth 8 again, and filter mouth 8 is arranged in prism-frustum-shaped, can be to gas
Stream carries out water conservancy diversion and concentration, so as to the interaction reduced and between impeller 4, plays a part of to reduce noise.Meanwhile, filter mouth 8
It is that 7 groups of acoustical cotton layer being made up of acoustical cotton is formed, acoustical cotton layer 7 can also play the effect for absorbing noise so that centrifugation
Noise during blower fan work is less；Air-flow on impeller 4, because the blade 13 on impeller 4 is inclined to set, can subtract again
Contact area between little airflow and blade 13, so as to reduce active force of the air-flow to blade 13, can reduce air-flow and blade
13 contacts are the noises for producing；Then airflow strikes are in snail tongue 14, periodically pulsing air-flow power produced by gas and
14 interaction formula of snail tongue can produce rotational noise, size and the pulsation severe degree of aerodynamic force and the meeting for snail tongue 14 of this noise
Wind area is relevant, and snail tongue 14 is made tilting so that pulsation aerodynamic force active area reduce, so as to radiation noise also
Reduce, while the acoustic resonator 15 arranged in snail tongue 14 can also absorb certain noise.By these settings so that
Low-noise cabinet type centrifugal fan has the effect of good reduction noise.
This specific embodiment is only which is not to restriction of the present utility model, ability to explanation of the present utility model
Field technique personnel can make the modification for not having creative contribution after this specification is read as needed to the present embodiment, but
As long as all being protected by Patent Law in right of the present utility model.
Claims (8)
1. a kind of low-noise cabinet type centrifugal fan, including casing (1), the air inlet (2) for being arranged on casing (1) side, it is arranged on
The air outlet (3) of casing (1) opposite side, the impeller (4) being rotatably connected on the casing (1) of the air outlet (3) side,
It is characterized in that：Be located on the casing (1) multiple support bars are provided between the air outlet (3) and the air inlet (2)
(5), it is formed between two of the arbitrary neighborhood support bars (5) and the casing (1) inwall and isolates frame (6), the isolation
The filter mouth (8) being formed with for airflow is provided with acoustical cotton layer (7), the acoustical cotton layer (7) on frame (6).
2. a kind of low-noise cabinet type centrifugal fan according to claim 1, it is characterised in that：The acoustical cotton layer (7) is in
Prism-frustum-shaped is simultaneously arranged towards air outlet (3) side, and filter mouth (8) is also arranged in prism-frustum-shaped, in acoustical cotton layer (7) both ends of the surface
The larger one end of area is connected on isolation frame (6), and in the both ends of the surface of filter mouth (8), the larger one end of area is near institute
State isolation frame (6).
3. a kind of low-noise cabinet type centrifugal fan according to claim 2, it is characterised in that：It is described filter mouth (8) area compared with
The upper end of the upper end of little one end and the impeller (4) in same level, the lower end of the less one end of area on filter mouth (8)
With the lower end of the impeller (4) also in same level.
4. a kind of low-noise cabinet type centrifugal fan according to claim 3, it is characterised in that：Near the air outlet (3)
The two ends of the casing (1) of side are provided with pedestal (9), and the impeller (4) is fixed in a rotating shaft (10), the rotating shaft
(10) two ends are rotatably connected on the pedestal described in two ends (9) respectively by bearing block (11).
5. a kind of low-noise cabinet type centrifugal fan according to claim 4, it is characterised in that：The impeller (4) includes
Be fixed on the cover plate (12) of the rotating shaft (10) both sides, it is multiple be connected between cover plate described in both sides (12) and circumferential array distribution
Blade (13), the blade (13) is with the rotating shaft (10) not at grade.
6. a kind of low-noise cabinet type centrifugal fan according to claim 5, it is characterised in that：Positioned at the air outlet (3)
Lower end be provided with snail tongue (14), in the snail tongue (14), the snail tongue (14) is tiltedly installed with institute the impeller (4)
State in casing (1).
7. a kind of low-noise cabinet type centrifugal fan according to claim 6, it is characterised in that：It is close on the snail tongue (14)
The side of the impeller (4) is provided with acoustic resonator (15).
8. a kind of low-noise cabinet type centrifugal fan according to claim 7, it is characterised in that：It is close on the casing (1)
Air inlet (2) place is provided with filter screen (16), and the filter screen (16) is covered on filter mouth (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620952911.9U CN206071906U (en) | 2016-08-25 | 2016-08-25 | A kind of low-noise cabinet type centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620952911.9U CN206071906U (en) | 2016-08-25 | 2016-08-25 | A kind of low-noise cabinet type centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206071906U true CN206071906U (en) | 2017-04-05 |
Family
ID=58432728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620952911.9U Expired - Fee Related CN206071906U (en) | 2016-08-25 | 2016-08-25 | A kind of low-noise cabinet type centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206071906U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374894A (en) * | 2019-08-16 | 2019-10-25 | 东莞市雅高通风设备制造有限公司 | A kind of fire-fighting centrifugal fan of cabinet type |
| CN110374934A (en) * | 2019-08-02 | 2019-10-25 | 马鞍山宸宇达风机工业有限公司 | The installation method of blower volute tongue |
-
2016
- 2016-08-25 CN CN201620952911.9U patent/CN206071906U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374934A (en) * | 2019-08-02 | 2019-10-25 | 马鞍山宸宇达风机工业有限公司 | The installation method of blower volute tongue |
| CN110374894A (en) * | 2019-08-16 | 2019-10-25 | 东莞市雅高通风设备制造有限公司 | A kind of fire-fighting centrifugal fan of cabinet type |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 Termination date: 20210825 |