CN110219834A - A kind of low noise axial ventilator - Google Patents
A kind of low noise axial ventilator Download PDFInfo
- Publication number
- CN110219834A CN110219834A CN201910663820.1A CN201910663820A CN110219834A CN 110219834 A CN110219834 A CN 110219834A CN 201910663820 A CN201910663820 A CN 201910663820A CN 110219834 A CN110219834 A CN 110219834A
- Authority
- CN
- China
- Prior art keywords
- impeller
- hush pipe
- host
- level
- wheel hub
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 17
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 4
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims abstract description 4
- 239000011152 fibreglass Substances 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009423 ventilation Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
-
- 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
- F04D29/664—Sound attenuation by means of sound absorbing material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of low noise axial ventilator, including collector, inlet, outlet hush pipe, level-one host and second level host, air inlet hush pipe is mounted in level-one host front end, and collector is mounted in air inlet hush pipe front end, outlet hush pipe is mounted in the rear end of second level host, and level-one host and second level host are directly connected to；Level-one host or second level host include inside and outside cylinder, quieter material, impeller and motor；Impeller includes blade, Ye Xin, wheel hub；Wheel hub includes ring flat-plate and wheel hub disc；It is characterized in that air inlet hush pipe and outlet hush pipe length respectively reach 1.5--2 times of impeller diameter；Using overlength superfine fibre glass silk flosssilk wadding as quieter material, with a thickness of 100-110mm；Wheel hub disc is located at ring flat-plate center, and ring flat-plate connects mode by carbon dioxide gas arc welding with wheel hub disc and connects, and blade material uses Stainless steel 316；Wind pressure can be improved in the blower, has good noise reduction effect.
Description
Technical field
The present invention relates to a kind of structure improvement of propeller fan for reducing constructing tunnel noise.
Background technique
Axial ventilator is that a kind of most common ventilation blowing device, gas are parallel to fan shaft stream currently on the market
It is dynamic, that is, the equidirectional air-flow of axis with fan blade, if electric fan, outdoor machine of air-conditioner fan are exactly the blower that axis stream mode is run.
The fixed position of axial ventilator simultaneously makes air mobile, axial ventilator be generally used for that traffic requirement is higher and pressure requirements compared with
Low occasion is widely used in the ventilations such as tunnel, subway, diversion works air-supply operation.But it is common some currently on the market
The problems such as axial ventilator is polluted there is also high noisy can seriously pollute periphery especially when residential neighborhood constructs
Acoustic environment, cause adverse effect to neighbouring resident living.Meanwhile the air quantity of blower, wind pressure and efficiency performance are low.How to reduce
The high noisy of axial ventilator pollutes, and is a problem in the urgent need to address.
Summary of the invention
The object of the invention is exactly to overcome the shortcomings of above-mentioned prior art, and providing one kind can be improved wind pressure, has good noise reduction
The low noise axial flow blow of effect.
The present invention includes collector, inlet, outlet hush pipe, level-one host and second level host, and air inlet hush pipe is mounted in level-one
Host front end, collector are mounted in air inlet hush pipe front end, and outlet hush pipe is mounted in the rear end of second level host, level-one host and second level
Host is directly connected to；Level-one host or second level host include inside and outside cylinder, quieter material, impeller and motor；Impeller includes leaf
Piece, Ye Xin, wheel hub；Wheel hub includes ring flat-plate and wheel hub disc.
Ventilation blower air inlet hush pipe, outlet hush pipe length respectively reach 1.5-2 times of impeller diameter；It is ultra-fine using overlength
Fibrous glass silk flosssilk wadding is as quieter material；The transmission of energy rapid decay sound, while confining air well, it is allowed to not flow
It is dynamic, prevent the convective heat transfer of air, thus the effect of playing sound absorption and heat preservation.Quieter material is with a thickness of 100-110mm, suitably
Noise can be further decreased by increasing noise reduction material；Blade material is changed to Stainless steel 316 blade by iron flake piece, and the leaf weight is light,
Intensity is high, can directly reduce the noise of impeller high speed rotation air-flow generation.Wheel hub disc position moves to ring flat-plate center, ring
Plate connects mode by carbon dioxide gas arc welding with wheel hub disc and connects, to reinforce wheel hub ring flat-plate intensity；Because blade is in high speed
There is very big centrifugal force when rotation, the leaf core of each blade is in ring flat-plate center, by wheel hub disc by originally in ring flat-plate
Side move to the middle position of ring flat-plate, strengthen the intensity of wheel hub ring flat-plate.
By a large amount of test data analyzer conclusion obtain: Rotor of Axial Flow Fan diameter in 1400mm or less, into
Gas, outlet hush pipe length are selected according to close to 2 times of impeller diameter；Axial ventilator impeller diameter 1400mm with
When upper, air inlet, outlet hush pipe length are according to 1.5 times of selections close to impeller diameter.In 1400mm, air inlet disappears impeller diameter
Sound cylinder and outlet hush pipe length are 1.75 times of impeller diameter.Such as: axial ventilator SDF- № 16, the ventilation blower
Machine number be № 16, impeller diameter 1600mm, air inlet, outlet hush pipe length be respectively 1.5 × 1600=2400mm.
Draught fan impeller and cylinder are passed through into Precision Machining, reduce radial unilateral gap, radial direction between impeller and inner cylinder
Unilateral gap should cannot be less than 1mm in 0.15% ~ 0.35% range of impeller diameter；Make between fan impeller and casing
Radial clearance uniformity.Such as: if fan size is № 18(impeller diameter 1800mm), between the radial direction between impeller and casing
Gap is usually in 2.7-6.3mm.And the radial unilateral gap between fan impeller of the present invention and casing can be reduced to 1-
2mm not only increases blower whole efficiency, moreover it is possible to further decrease fan noise.
Blade is the core part of draught fan impeller, and blade is fixed on wheel hub, and adjustable blade burner.Ring flat-plate and wheel hub spoke
Plate all uses the machine-shaping of Q235 steel plate materials to be then welded.In general, the change wheel hub surface because of blade shape need to be widened,
The ring flat-plate of different model axial fan hub is different with the thickness of steel plate needed for wheel hub disc.To improve fan performance, draught fan impeller
Wheel hub ratio (the ratio between hub diameter and impeller diameter) becomes 0.69 from original 0.6, proves through field experiment, in equal conditions
Under, wheel hub is higher than 0.6 performance than 0.69 relativeatoeterahub.
To improve wind pressure, vane foil width needs bigger, and torsion resistance is also bigger, for the blade strength for increasing root of blade,
Ye Xin is changed to the design of bottom disc shape structure by original individually metal screw.The lobe numbers of firsts and seconds impeller are by original
15,11 are reduced to present 10 and 8 respectively, to further decrease noise and reduce production cost.To improve blade
Intensity, reduce fan noise, the material of blade is changed to 316 stainless steels by metal material.The motor uses frequency conversion fan, also
It can economize on electricity.
The present invention is suitable for manufacturing or being transformed the axial ventilator of various constructing tunnel SDF serial model No.s, especially needle
To the propeller fan of impeller diameter 1000mm-2000mm, model SDF- № 10--SDF- № 20.A series of changed by above-mentioned
Into, reached good noise reduction effect, be fully able to meet be less than JB/T8690-1998 " industrial ventilation machine noise level limit " standard
Specified value has reached 75dB (A) in the A sound level noise of optimum efficiency operating point by test.Meanwhile guaranteeing that blower is original
In the case where air quantity, wind pressure can improve 10% or so, and fan efficiency has original 72% or so to be increased to 75% or so.
Detailed description of the invention
Fig. 1 is impeller and canister mounting arrangement schematic diagram；
Fig. 2 is main machine drum body structural schematic diagram；
In figure: 1. blades, 2. inner cylinders, 3. quieter materials, 4. motors, 5. ring flat-plates, 6. wheel hub disc, 7. leaf cores, 8. outer barreies,
9. impeller.
Specific embodiment
Wheel hub disc 6 is located at 5 center of ring flat-plate, passes through carbon dioxide gas arc welding between ring flat-plate 5 and wheel hub disc 6
Mode connects.Motor 4 is fixed on the center of inner cylinder 2, and quieter material 3 is filled between outer barrel 8 and inner cylinder 2；Using super
Long superfine fibre glass silk flosssilk wadding is as quieter material 3, with a thickness of 100-110mm；1 material of blade uses Stainless steel 316.Air inlet disappears
Sound cylinder and outlet hush pipe length respectively reach 1.5--2 times of 9 diameter of impeller；As 9 diameter 1400mm of Rotor of Axial Flow Fan
When following, air inlet hush pipe and outlet hush pipe length are respectively close to 2 times of 9 diameter of impeller；9 diameter 1400mm of impeller or more
When, air inlet hush pipe and outlet hush pipe length are respectively close to 1.5 times of 9 diameter of impeller；9 diameter of impeller is just in 1400mm
When, air inlet hush pipe and outlet hush pipe length are 1.75 times of 9 diameter of impeller.It is radial between impeller blade 1 and inner cylinder 2
Gap is uniform, and unilateral gap is not less than 1mm within the scope of the 0.15%--0.35% of 9 diameter of impeller.In general, impeller blade 1
Unilateral gap 1-2mm between inner cylinder 2 is best, blower whole efficiency highest.Ring flat-plate 5 and wheel hub disc 6 are all made of
Then the machine-shaping of Q235 steel plate is welded.The hub diameter and 9 diameter ratio of impeller of draught fan impeller 9 are 0.69, can be into one
Step improves fan performance.
In actual use, for long 3000 meters, excavated section 120m2Certain freeway tunnel, through calculating, select φ 1.5m
Soft ventilation duct, required maximum quantity of wind be 1660m3/min, required maximum pressure be 5860Pa, select SDF- № 12.5/2 ×
110kW blower can be met the requirements.
Claims (10)
1. a kind of low noise axial ventilator, including collector, inlet, outlet hush pipe, level-one host and second level host, air inlet
Hush pipe is mounted in level-one host front end, and collector is mounted in air inlet hush pipe front end, and outlet hush pipe is mounted in the rear end of second level host,
Level-one host and second level host are directly connected to；Level-one host or second level host include inside and outside cylinder, quieter material, impeller and
Motor；Impeller includes blade, Ye Xin, wheel hub；Wheel hub includes ring flat-plate and wheel hub disc；It is characterized in that air inlet hush pipe and outlet disappear
Sound tube length degree respectively reaches 1.5--2 times of impeller diameter；Using overlength superfine fibre glass silk flosssilk wadding as quieter material, thickness
For 100-110mm；Wheel hub disc is located at ring flat-plate center, and ring flat-plate and wheel hub disc pass through the carbon dioxide gas arc welding side of connecing
Formula connection.
2. low noise axial ventilator as described in claim 1, it is characterized in that blade material uses Stainless steel 316.
3. low noise axial ventilator as claimed in claim 1 or 2, it is characterized in that Rotor of Axial Flow Fan diameter
When 1400mm or less, air inlet hush pipe and outlet hush pipe length are respectively close to 2 times of impeller diameter；Impeller diameter 1400mm with
When upper, air inlet hush pipe and outlet hush pipe length are respectively close to 1.5 times of impeller diameter；Impeller diameter in 1400mm, into
Gas hush pipe and outlet hush pipe length are 1.75 times of impeller diameter.
4. low noise axial ventilator as claimed in claim 1 or 2, it is characterized in that radial between impeller blade and inner cylinder
Gap is uniform, and unilateral gap is not less than 1mm within the scope of the 0.15%--0.35% of impeller diameter.
5. low noise axial ventilator as claimed in claim 1 or 2, it is characterized in that radial between impeller blade and inner cylinder
Gap is uniform, and unilateral gap is 1-2mm.
6. low noise axial ventilator as claimed in claim 1 or 2, it is characterized in that ring flat-plate and wheel hub disc are all made of Q235
Then steel plate machine-shaping is welded.
7. low noise axial ventilator as claimed in claim 1 or 2, it is characterized in that the hub diameter and impeller of draught fan impeller
Diameter ratio is 0.69, can further improve fan performance.
8. low noise axial ventilator as claimed in claim 1 or 2, it is characterized in that leaf core is bottom disc shape structure, with
Increase the blade strength of root of blade.
9. low noise axial ventilator as claimed in claim 1 or 2, it is characterized in that the motor uses frequency conversion fan.
10. low noise axial ventilator as claimed in claim 1 or 2, it is characterized in that the number of blade of firsts and seconds impeller
Mesh is reduced respectively to 10 and 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910663820.1A CN110219834A (en) | 2019-07-23 | 2019-07-23 | A kind of low noise axial ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910663820.1A CN110219834A (en) | 2019-07-23 | 2019-07-23 | A kind of low noise axial ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110219834A true CN110219834A (en) | 2019-09-10 |
Family
ID=67813909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910663820.1A Pending CN110219834A (en) | 2019-07-23 | 2019-07-23 | A kind of low noise axial ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110219834A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2040182U (en) * | 1988-07-30 | 1989-06-28 | 煤炭工业部煤炭科学研究院重庆研究所 | Low-noise opposite-rotation and axial-flow local ventilator |
| CN2338517Y (en) * | 1998-06-30 | 1999-09-15 | 华耀南 | Explosion-proof axial-flow electric fan for local ventilation |
| JP2007023788A (en) * | 2005-07-12 | 2007-02-01 | Hitachi Plant Technologies Ltd | Axial blower |
| CN201461474U (en) * | 2009-08-12 | 2010-05-12 | 陕西平阳风机有限公司 | Novel jet fan |
| CN201461470U (en) * | 2009-07-22 | 2010-05-12 | 哈尔滨航飞工业机械有限公司 | Explosion-proof type pressing type disrotatory axial flow local ventilator 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 |
| CN105626560A (en) * | 2015-11-25 | 2016-06-01 | 平安电气股份有限公司 | All-plastic local ventilator |
| CN210265293U (en) * | 2019-07-23 | 2020-04-07 | 山西省侯马市鑫丰康风机有限公司 | Low-noise axial-flow type ventilator |
-
2019
- 2019-07-23 CN CN201910663820.1A patent/CN110219834A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2040182U (en) * | 1988-07-30 | 1989-06-28 | 煤炭工业部煤炭科学研究院重庆研究所 | Low-noise opposite-rotation and axial-flow local ventilator |
| CN2338517Y (en) * | 1998-06-30 | 1999-09-15 | 华耀南 | Explosion-proof axial-flow electric fan for local ventilation |
| JP2007023788A (en) * | 2005-07-12 | 2007-02-01 | Hitachi Plant Technologies Ltd | Axial blower |
| CN201461470U (en) * | 2009-07-22 | 2010-05-12 | 哈尔滨航飞工业机械有限公司 | Explosion-proof type pressing type disrotatory axial flow local ventilator for mine |
| CN201461474U (en) * | 2009-08-12 | 2010-05-12 | 陕西平阳风机有限公司 | Novel jet fan |
| 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 |
| CN105626560A (en) * | 2015-11-25 | 2016-06-01 | 平安电气股份有限公司 | All-plastic local ventilator |
| CN210265293U (en) * | 2019-07-23 | 2020-04-07 | 山西省侯马市鑫丰康风机有限公司 | Low-noise axial-flow type ventilator |
Non-Patent Citations (1)
| Title |
|---|
| 孟凡英等主编: "《流体力学与流体机械》", 31 January 2019, pages: 247 - 248 * |
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