CN107524617B - The cold axial flow blower of noise reduction ring - Google Patents
The cold axial flow blower of noise reduction ring Download PDFInfo
- Publication number
- CN107524617B CN107524617B CN201710736839.5A CN201710736839A CN107524617B CN 107524617 B CN107524617 B CN 107524617B CN 201710736839 A CN201710736839 A CN 201710736839A CN 107524617 B CN107524617 B CN 107524617B
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- noise
- fixed
- reduction section
- former dome
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of cold axial flow blowers of noise reduction ring, it is characterized by: including air inlet, Blower Housing, former dome, pod afterwards, motor, impeller and noise reduction section, air inlet is fixed at Blower Housing inlet end, motor is fixed in Blower Housing, impeller is arranged on machine shaft, former dome is arranged in motor front end and is fixed on Blower Housing inner wall, pod is arranged in motor rear end and is fixed on Blower Housing inner wall afterwards, noise reduction section is fixed on Blower Housing inner sidewall, former dome noise-reducing structure and the rear pod noise-reducing structure with former dome and rear pod form fit are provided in former dome and rear pod.Invention increases whole noise reduction areas, the noise-reducing structure of front and back pod can effectively eliminate motor shaft pivoting friction noise and blade is distributed to the noise at center, only there are the noises in necessary air duct, to substantially reduce the whole noise volume of blower generation.
Description
Technical field
The present invention relates to a kind of blower, especially a kind of cold axial flow blower of noise reduction ring.
Background technique
Axial flow blower, purposes is very extensive, is exactly and the equidirectional air-flow of the axis of fan blade, such as electric fan, outdoor machine of air-conditioner wind
Fan is exactly that axis stream mode runs blower.Why it is known as " axial-flow type ", is because gas is parallel to fan shaft flowing.Axial-flow type wind
Machine is generally used for that traffic requirement is higher and the lower occasion of pressure requirements.The fixed position of axial fan simultaneously keeps air mobile.Axis
Flow fan is mainly made of draught fan impeller and casing, and structure is simple but data demand is very high.Blower OA overall noise level and blade
Six powers of speed are directly proportional.According to analysis, fan noise source is substantially dipole property.It can further release, noise
It is since blade acts on caused by pulsating force on the air for flow through blower.It is considered that blower Discrete Dipole Approximation source has two
It is a, one be with rotor blade movement pressure field caused by propeller type noise, the other is caused by aerodynamic interference
Fluctuating pressure on blades noise.
Traditional axial flow blower cladding setting quieter material mainly on the outside of Blower Housing eliminates noise, but blower
Both ends diameter itself is larger, and the noise that both ends exhale is also larger, and only setting erasure effect is limited merely on outer side.
Summary of the invention
The present invention relates to a kind of cold axial flow blower of noise reduction ring, erasure effect is good.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of cold axial flow blower of noise reduction ring, it is characterised in that: include air inlet, Blower Housing, former dome, rear water conservancy diversion
Cover, motor, impeller and noise reduction section, air inlet are fixed at Blower Housing inlet end, and motor is fixed in Blower Housing, leaf
Wheel is arranged on machine shaft, and former dome is arranged in motor front end and is fixed on Blower Housing inner wall, rear pod setting
In motor rear end and be fixed on Blower Housing inner wall, noise reduction section is fixed on Blower Housing inner sidewall, former dome and
Former dome noise-reducing structure and the rear pod noise reduction with former dome and rear pod form fit are provided in pod afterwards
Structure.
Further, the former dome is semielliptical shape shell, former dome noise-reducing structure shape and former dome
Match and former dome noise-reducing structure overall volume be less than former dome volume, former dome silencer mechanism include keel bracket a,
Acoustic damping mesh a, fixed bracket a and inner stuffing, keel bracket a are made of several radiation keel a and annular keel a, every radiation
The one end keel a is located at semiellipsoid shape one end vertex position, radiates the keel a other end along semiellipsoid surface along axis
Direction extends to the other end of semiellipsoid and is fixedly connected with annular keel a, and keel bracket a is fixed by fixed bracket a
In former dome inner wall, acoustic damping mesh a is set in the outside of keel bracket a, and inner stuffing is uniformly arranged in keel bracket a.
Further, the acoustic damping mesh a is the porous plate of percent opening 14.5%.
Further, the rear pod is the cone shell that side is cambered surface, and rear pod noise-reducing structure setting exists
Afterwards on the inside of pod, rear pod noise-reducing structure includes acoustic damping mesh b, fixed bracket b and inner stuffing, and acoustic damping mesh b includes cylinder
Shape shell portion and hemispherical portion, cylindrical tube section diameter is equal with hemispherical portion diameter and cylindrical tube body portion one
End is fixedly connected with hemispherical portion, and acoustic damping mesh b is fixed on rear pod inner wall by fixed bracket b, and inner stuffing is uniformly set
It sets in acoustic damping mesh b.
Further, the acoustic damping mesh b is processed by the porous plate of percent opening 14.5%.
Further, the noise reduction section comprising import noise reduction section, host noise reduction section and exports noise reduction section, import noise reduction section,
Host noise reduction section and outlet noise reduction section are arranged on Blower Housing inner sidewall, and import noise reduction section is correspondingly arranged at former dome side
On the inside of the Blower Housing of face, host noise reduction section is correspondingly arranged on the inside of the Blower Housing of motor side, and outlet noise reduction section is correspondingly arranged at
Side in pod side Fan casing body afterwards, Blower Housing correspond to import noise reduction section, host noise reduction section and outlet noise reduction section respectively to
Outside protuberance, inner stuffing are arranged in the protuberance cavity of Blower Housing and are fixed by netted cover board.
Further, the inner stuffing is super glass wool, wraps up glass gauze on the outside of super glass wool.
Further, the inner stuffing fills up 2/3rds skies of keel bracket a, acoustic damping mesh b and barrel housing inner cavity
Between.
Compared with prior art, the present invention having the following advantages that and effect: the present invention is in prior art blower housing noise reduction
On the basis of, corresponding noise-reducing structure is also equipped in the pod of front and back, to increase whole noise reduction area, front and back is led
The noise-reducing structure of stream cover can effectively eliminate motor shaft pivoting friction noise and blade is distributed to the noise at center, Jin Jinliu
It is necessary to air duct noise, to substantially reduce the whole noise volume of blower generation.
Detailed description of the invention
Fig. 1 is the schematic diagram of the cold axial flow blower of noise reduction ring of the invention.
Fig. 2 is the leading portion schematic diagram of the cold axial flow blower of noise reduction ring of the invention.
Fig. 3 is the middle section schematic diagram of the cold axial flow blower of noise reduction ring of the invention.
Fig. 4 is the back segment schematic diagram of the cold axial flow blower of noise reduction ring of the invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair
Bright explanation and the invention is not limited to following embodiments.
As shown, a kind of cold axial flow blower of noise reduction ring of the invention, includes air inlet 1, Blower Housing 2, former dome
3, rear pod 4, motor 5, impeller 6 and noise reduction section 7, air inlet 1 are fixed at 2 inlet end of Blower Housing, and motor 5 is fixed
In Blower Housing 2, the setting of impeller 6 is driven in 5 shaft of motor by motor 5, and the setting of former dome 3 is in 5 front end of motor and consolidates
It is scheduled on 2 inner wall of Blower Housing, rear pod 4 is arranged in 5 rear end of motor and is fixed on 2 inner wall of Blower Housing, and noise reduction section 7 is solid
It is fixed to be arranged on 2 inner sidewall of Blower Housing, it is provided in former dome 3 and rear pod 4 and former dome 3 and rear pod 4
The former dome noise-reducing structure of form fit and rear pod noise-reducing structure.
Former dome is semielliptical shape shell, and former dome noise-reducing structure shape is matched with former dome 3 and preceding water conservancy diversion
Cover noise-reducing structure overall volume be less than 3 volume of former dome, former dome silencer mechanism include keel bracket a8, acoustic damping mesh a9,
Fixed bracket a10 and inner stuffing, keel bracket a8 are made of several radiation keel a and annular keel a, every radiation keel a
One end is located at semiellipsoid shape one end vertex position, radiates the keel a other end along semiellipsoid surface along axis direction
Extend to the other end of semiellipsoid and be fixedly connected with annular keel a, keel bracket a8 is fixed on by fixed bracket a10
3 inner wall of former dome, acoustic damping mesh a9 are set in the outside of keel bracket a 8, and inner stuffing is uniformly arranged on keel bracket a 8
It is interior.Acoustic damping mesh a 9 is the porous plate of percent opening 14.5%.
Pod 4 is the cone shell that side is cambered surface afterwards, and rear pod noise-reducing structure is arranged in rear pod 4
Side, rear pod noise-reducing structure include acoustic damping mesh b11, fixed bracket b12 and inner stuffing, and acoustic damping mesh b11 includes cylindrical tube
Body portion and hemispherical portion, cylindrical tube section diameter is equal with hemispherical portion diameter and cylindrical tube body portion one end with
Hemispherical portion is fixedly connected, and acoustic damping mesh b11 is fixed on rear 4 inner wall of pod by fixed bracket b12, and inner stuffing is uniformly set
It sets in acoustic damping mesh b11.Acoustic damping mesh b11 is processed by the porous plate of percent opening 14.5%.
Noise reduction section includes import noise reduction section 13, host noise reduction section 14 and outlet noise reduction section 15, and import noise reduction section 13, host disappear
Segment 14 and outlet noise reduction section 15 are arranged on 2 inner sidewall of Blower Housing, and import noise reduction section 13 is correspondingly arranged at former dome 3
2 inside of side Blower Housing, host noise reduction section 14 are correspondingly arranged at 6 side Blower Housing of motor, 2 inside, export 15 pairs of noise reduction section
Rear 4 side Blower Housing of pod, 2 inside should be set, and Blower Housing 2 corresponds to import noise reduction section 13, host noise reduction section 14 and goes out
Mouth noise reduction section 15 is swelled outward respectively, and inner stuffing is arranged in the protuberance cavity of Blower Housing 2 and is consolidated by netted cover board
It is fixed.
Inner stuffing is super glass wool, wraps up glass gauze on the outside of super glass wool.Inner stuffing fills up keel bracket
A, 2/3rds spaces of acoustic damping mesh b and barrel housing inner cavity.
The cold axial flow blower of noise reduction ring of the invention is on the basis of prior art blower housing noise reduction, in the pod of front and back
It is also equipped with corresponding noise-reducing structure, to increase whole noise reduction area, the noise-reducing structure of front and back pod can be effective
Ground is eliminated motor shaft pivoting friction noise and blade and is distributed to the noise at center, only there are the noise in necessary air duct, from
And substantially reduce the whole noise volume of blower generation；The noise-reducing structure for increasing setting simultaneously is provided entirely in front and back water conservancy diversion
Cover is internal, thus do not increase blower volume itself, it is compact-sized.
Above content is only illustrations made for the present invention described in this specification.Technology belonging to the present invention
The technical staff in field can do various modifications or supplement or is substituted in a similar manner to described specific embodiment, only
It should belong to guarantor of the invention without departing from the content or beyond the scope defined by this claim of description of the invention
Protect range.
Claims (6)
1. a kind of cold axial flow blower of noise reduction ring, it is characterised in that: comprising air inlet, Blower Housing, former dome, rear pod,
Motor, impeller and noise reduction section, air inlet are fixed at Blower Housing inlet end, and motor is fixed in Blower Housing, impeller
It is arranged on machine shaft, former dome is arranged in motor front end and is fixed on Blower Housing inner wall, and rear pod setting exists
Motor rear end is simultaneously fixed on Blower Housing inner wall, and noise reduction section is fixed on Blower Housing inner sidewall, and former dome is with after
Former dome noise-reducing structure and the rear pod noise reduction knot with former dome and rear pod form fit are provided in pod
Structure；The former dome is semielliptical shape shell, and former dome noise-reducing structure shape is matched with former dome and former dome
Noise-reducing structure overall volume is less than former dome volume, and former dome silencer mechanism includes keel bracket a, acoustic damping mesh a, fixed branch
Frame a and inner stuffing, keel bracket a are made of several radiation keel a and annular keel a, and every radiation one end keel a is located at half
Ellipsoid shape one end vertex position, the radiation keel a other end is along semiellipsoid surface along axis direction to semiellipsoid
The other end extend and be fixedly connected with annular keel a, keel bracket a by fixation bracket a be fixed on former dome inner wall,
Acoustic damping mesh a is set in the outside of keel bracket a, and inner stuffing is uniformly arranged in keel bracket a.
2. the cold axial flow blower of noise reduction ring described in accordance with the claim 1, it is characterised in that: the acoustic damping mesh a is percent opening
14.5% porous plate.
3. the cold axial flow blower of noise reduction ring described in accordance with the claim 1, it is characterised in that: it is cambered surface that pod, which is side, after described
Cone shell, rear pod noise-reducing structure is arranged on the inside of rear pod, rear pod noise-reducing structure include acoustic damping mesh b,
Fixed bracket b and inner stuffing, acoustic damping mesh b include cylindrical tube body portion and hemispherical portion, cylindrical tube section diameter with
Hemispherical portion diameter is equal and cylindrical tube body portion one end is fixedly connected with hemispherical portion, and acoustic damping mesh b passes through fixed bracket b
It is fixed on rear pod inner wall, inner stuffing is uniformly arranged in acoustic damping mesh b.
4. the cold axial flow blower of noise reduction ring described in accordance with the claim 3, it is characterised in that: the acoustic damping mesh b is by percent opening 14.5%
Porous plate be processed into.
5. the cold axial flow blower of noise reduction ring described in accordance with the claim 1, it is characterised in that: the noise reduction section includes import noise reduction
Section, host noise reduction section and outlet noise reduction section, import noise reduction section, host noise reduction section and outlet noise reduction section are arranged in Blower Housing
On side wall, import noise reduction section is correspondingly arranged at side in the Fan casing body of former dome side, and host noise reduction section is correspondingly arranged at motor
Side in the Fan casing body of side, outlet noise reduction section are correspondingly arranged at side in rear pod side Fan casing body, Blower Housing it is corresponding into
Mouth noise reduction section, host noise reduction section and outlet noise reduction section are swelled outward respectively, and the protuberance that Blower Housing is arranged in inner stuffing is empty
It is intracavitary and fixed by netted cover board.
6. according to the described in any item cold axial flow blowers of noise reduction ring of claim 1,3,5, it is characterised in that: the inner stuffing is
Glass gauze is wrapped up in super glass wool, super glass wool outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710736839.5A CN107524617B (en) | 2017-08-24 | 2017-08-24 | The cold axial flow blower of noise reduction ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710736839.5A CN107524617B (en) | 2017-08-24 | 2017-08-24 | The cold axial flow blower of noise reduction ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107524617A CN107524617A (en) | 2017-12-29 |
| CN107524617B true CN107524617B (en) | 2019-08-23 |
Family
ID=60682143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710736839.5A Active CN107524617B (en) | 2017-08-24 | 2017-08-24 | The cold axial flow blower of noise reduction ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107524617B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374919A (en) * | 2019-08-19 | 2019-10-25 | 南通迪瓦特节能风机有限公司 | A kind of cold axial flow blower impeller of noise reduction ring |
| CN113027824B (en) * | 2021-04-16 | 2022-10-18 | 曹路勇 | Impeller type intelligent ventilation and noise reduction device and use method thereof |
| CN117495914B (en) * | 2023-12-29 | 2024-04-19 | 中国科学院长春光学精密机械与物理研究所 | Multiband circumferential scanning type search and follow integrated photoelectric early warning recognition system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2393960A1 (en) * | 1977-06-08 | 1979-01-05 | Berry Sa | Silencing system for axial flow fan - has glass wool lined duct with resonator tubes tuned to absorb sound of different frequencies |
| CN201250804Y (en) * | 2008-07-03 | 2009-06-03 | 南阳防爆集团有限公司 | Explosion-proof type press in type disrotatory axial flow local ventilating fan for mine |
| CN201546981U (en) * | 2009-11-05 | 2010-08-11 | 中铁隧道集团有限公司 | Axial flow fan in super long tunnel construction on plateau |
| CN201763693U (en) * | 2010-08-30 | 2011-03-16 | 湖北赛福机械有限公司 | Contra-rotating axial-flow type partial ventilating machine with built-in ventilating pipes |
| CN104632714A (en) * | 2014-12-26 | 2015-05-20 | 平安电气股份有限公司 | High-efficiency low-noise axial flow fan |
-
2017
- 2017-08-24 CN CN201710736839.5A patent/CN107524617B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2393960A1 (en) * | 1977-06-08 | 1979-01-05 | Berry Sa | Silencing system for axial flow fan - has glass wool lined duct with resonator tubes tuned to absorb sound of different frequencies |
| CN201250804Y (en) * | 2008-07-03 | 2009-06-03 | 南阳防爆集团有限公司 | Explosion-proof type press in type disrotatory axial flow local ventilating fan for mine |
| CN201546981U (en) * | 2009-11-05 | 2010-08-11 | 中铁隧道集团有限公司 | Axial flow fan in super long tunnel construction on plateau |
| CN201763693U (en) * | 2010-08-30 | 2011-03-16 | 湖北赛福机械有限公司 | Contra-rotating axial-flow type partial ventilating machine with built-in ventilating pipes |
| CN104632714A (en) * | 2014-12-26 | 2015-05-20 | 平安电气股份有限公司 | High-efficiency low-noise axial flow fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107524617A (en) | 2017-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107524617B (en) | The cold axial flow blower of noise reduction ring | |
| CN107503958A (en) | A kind of centrifugal blower fan system for range hood | |
| CN206592349U (en) | A kind of blower fan system auxiliary denoising device of single air-inlet range hood | |
| CN107940593A (en) | A kind of air purifier | |
| CN102261341B (en) | Minitype dual-air-out centrifugal fan | |
| CN102828977B (en) | Energy-saving fan | |
| CN207513872U (en) | A kind of centrifugal blower fan system | |
| CN205956027U (en) | High -efficient low noise axial -flow blower | |
| CN105179275A (en) | Novel mixed flow pipeline fan | |
| CN102900685A (en) | Blast protection mixed flow blower for ship | |
| CN211423009U (en) | Frequency-adjustable noise-reducing centrifugal ventilator and volute thereof | |
| CN202900707U (en) | Air supply device of mixed flow blower | |
| CN208870853U (en) | A kind of low flow resistance high silencing performance device of steel combustion fan | |
| CN207507196U (en) | A kind of air purifier | |
| CN110925240A (en) | Frequency-adjustable noise-reducing centrifugal ventilator and volute thereof | |
| CN208294797U (en) | A kind of aviation helicopter low noise axial fan | |
| CN214007551U (en) | Air-out water diversion noise reduction structure of bladeless fan and bladeless fan using same | |
| CN106422017B (en) | A kind of blower device of ventilator | |
| CN211747563U (en) | High-speed silence hair-dryer | |
| CN209294087U (en) | Channel-type silent ventilator | |
| CN109908603B (en) | Exhaust smoke generator and remote control tank with centrifugal blower | |
| CN208252391U (en) | Monotubular twin-stage propeller fan | |
| CN106015098A (en) | Prewhirl quieter capable of effectively broadening flow range of gas compressor | |
| CN208031622U (en) | Lung ventilator with silencing function | |
| CN209195763U (en) | A kind of diagonal flow fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |