CN201301831Y - Low noise large air volume axial-flow fan - Google Patents
Low noise large air volume axial-flow fan Download PDFInfo
- Publication number
- CN201301831Y CN201301831Y CNU2008201065963U CN200820106596U CN201301831Y CN 201301831 Y CN201301831 Y CN 201301831Y CN U2008201065963 U CNU2008201065963 U CN U2008201065963U CN 200820106596 U CN200820106596 U CN 200820106596U CN 201301831 Y CN201301831 Y CN 201301831Y
- Authority
- CN
- China
- Prior art keywords
- section
- cross
- blade
- axis
- coordinate system
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Disclosed is a low noise large air volume axial-flow fan which pertains to the technical field of non positive displacement pump, solving the problem of energy saving and noise reduction. The utility model adopts the technical scheme that the fan comprises a shell, a hub and a wing blade; wherein the geometrical shape of the blade is determined by the geometrical shape of the section and the spatial location of the section of the blade: six cylindrical surface cutting blades with different radii take rotation axes of the blades as axes, a rectangular coordinate system is established with the section front end as an origin in each section unfolded plane, and the geometrical shape of the section is determined according to the coordinate values of corresponding points on the outer edge of each section; and the origin of the rectangular coordinate system is displaced on a central axis of the blade root, a Y axis of the coordinate system is parallel to a blade rotation axis, an X axis is tangent to the cylindrical surface of the cutting blade, and the spatial location is determined by the clockwise rotation angle of each section around the origin of the rectangular coordinate system, reverse displacement value A towards the X axis and positive displacement value H towards the Y axis after rotation of each section. The axial-flow fan has high efficiency, large air volume, high hydrostatic pressure, low noise, light weight, and is applicable to all industries.
Description
Technical field
The utility model relates to the axial-flow blower that uses in a kind of air cooling device in industries such as petrochemical industry, metallurgy, electric power, the cooling tower, belongs to non-displacement pump technical field.
Background technique
Axial-flow blower is the machinery that the mechanical energy of prime mover input is changed into gas kinetic energy and pressure energy, be widely used in oil, chemical industry, metallurgy, electric power, the air cooling device of industries such as communications and transportation and large-scale hotel, commercial building, air cooling condensation device, heat exchanger, in air conditioning and the compound ventilation air-changing device, its efficient and operational noise depend mainly on its blade structure.At present, the highest total pressure efficiency of domestic air cooling device, the used blower fan of cooling tower is generally 85%, and the sound pressure level noise level is smaller or equal to 85dB (A).Blade structure to axial-flow blower improves, and further improves the efficient of axial-flow blower and reduces its operational noise, is the target of this class blower fan research.
Summary of the invention
The utility model be used to overcome prior art defective, the big air quantity axial-flow blower of low noise a kind of rational in infrastructure, energy-efficient is provided.
The alleged problem of the utility model realizes with following technical proposals:
The big air quantity axial-flow blower of a kind of low noise comprises housing, wheel hub and is arranged at wheel hub airfoil blade on every side, and the geometrical shape of described blade is determined by the geometrical shape in its cross section and the spatial position in cross section:
The geometrical shape of a, blade profile is determined by following parameter:
The rotatingshaft with blade with six different radiis is the cylndrical surface cut blade of axis, is in the rectangular coordinate system of initial point with the cross section front end in plane is launched in each cross section, and the coordinate figure of respective point is on each cross section outer rim:
First cross section (radius R=99.7mm):
X/B x(mm) Y1(mm) Y2(mm)
0 0.0 0.0 0.0
0.002 0.2 2.8 -2.9
0.005 0.5 4.3 -3.8
0.0125 1.3 6.0 -4.8
0.025 2.7 7.8 -6.0
0.05 5.4 10.4 -8.1
0.1 10.7 13.5 -10.6
0.2 21.4 16.8 -13.2
0.3 32.1 18.5 -14.4
0.4 42.8 19.1 -14.6
0.5 53.6 18.6 -13.9
0.6 64.3 17.0 -12.7
0.7 75.0 14.6 -10.9
0.8 85.7 11.5 -8.9
0.9 96.4 7.5 -6.5
0.95 101.8 5.4 -5.2
1 107.1 0.0 0.0
Second cross section (radius R=134.7mm):
X/B x(mm) Y1(mm) Y2(mm)
0 0.0 0.0 0.0
0.002 0.3 2.2 -1.7
0.005 0.8 3.5 -2.5
0.0125 2.1 5.2 -3.5
0.025 4.1 7.1 -4.6
0.05 8.2 9.5 -6.1
0.1 16.4 12.4 -8.1
0.2 32.9 15.6 -10.2
0.3 49.4 17.2 -11.1
0.4 65.8 17.8 -11.1
0.5 82.3 17.4 -10.5
0.6 98.7 15.8 -8.8
0.7 115.2 12.9 -5.9
0.8 131.6 8.9 -2.8
0.9 148.1 4.4 -0.6
0.95 156.3 2.2 -0.4
1 164.5 -0.1 -1.3
The 3rd cross section (radius R=234.7mm):
X/B x(mm) Y1(mm) Y2(mm)
0 0.0 0.0 0.0
0.002 0.3 1.7 -1.2
0.005 0.7 2.7 -1.9
0.0125 1.8 4.1 -2.7
0.025 3.6 5.7 -3.6
0.05 7.2 7.6 -4.7
0.1 14.4 9.9 -6.2
0.2 28.8 12.6 -7.9
0.3 43.2 13.9 -8.5
0.4 57.5 14.3 -8.6
0.5 71.9 14.0 -8.0
0.6 86.3 12.8 -6.6
0.7 100.7 10.5 -4.4
0.8 115.1 7.3 -2.0
0.9 129.4 3.7 -0.4
0.95 136.7 1.8 -0.3
1 143.9 -0.1 -1.1
The 4th cross section (radius R=334.7mm):
X/B x(mm) Y1(mm) Y2(mm)
0 0.0 0.0 0.0
0.002 0.3 1.3 -0.9
0.005 0.6 2.1 -1.3
0.0125 1.5 3.2 -2.0
0.025 2.9 4.4 -2.7
0.05 5.9 5.9 -3.5
0.1 11.8 7.7 -4.6
0.2 23.6 9.7 -5.9
0.3 35.3 10.7 -6.4
0.4 47.1 11.1 -6.4
0.5 58.9 10.9 -6.0
0.6 70.6 9.9 -4.9
0.7 82.4 8.2 -3.2
0.8 94.2 5.7 -1.4
0.9 105.9 2.9 -0.3
0.95 111.8 1.4 -0.3
1 117.7 -0.1 -0.9
The 5th cross section (radius R=434.7mm):
X/B x(mm) Y1(mm) Y2(mm)
0 0.0 0.0 0.0
0.002 0.2 1.1 -0.6
0.005 0.5 1.7 -1.0
0.0125 1.3 2.7 -1.6
0.025 2.7 3.7 -2.2
0.05 5.3 5.0 -2.9
0.1 10.7 6.6 -3.8
0.2 21.3 8.3 -4.8
0.3 32.0 9.2 -5.2
0.4 42.7 9.4 -5.2
0.5 53.3 9.3 -4.8
0.6 64.0 8.5 -3.9
0.7 74.7 7.0 -2.5
0.8 85.3 4.9 -1.1
0.9 96.0 2.5 -0.2
0.95 101.3 1.2 -0.2
1 106.7 -0.2 -0.8
The 6th cross section (radius R=500mm):
X/B x(mm) Y1(mm) Y2(mm)
0 0.0 0.0 0.0
0.002 0.2 1.0 -0.5
0.005 0.5 1.6 -0.9
0.0125 1.3 2.5 -1.5
0.025 2.6 3.5 -2.0
0.05 5.2 4.7 -2.6
0.1 10.4 6.1 -3.4
0.2 20.9 7.8 -4.4
0.3 31.3 8.6 -4.7
0.4 41.8 8.9 -4.7
0.5 52.2 8.7 -4.4
0.6 62.6 8.0 -3.5
0.7 73.1 6.6 -2.2
0.8 83.5 4.7 -0.9
0.9 93.9 2.4 -0.1
0.95 99.2 1.2 -0.2
1 104.4 -0.2 -0.8
Wherein B is the maximum chord length in cross section;
The spatial position of b, blade profile is determined by following parameter:
The initial point that the rectangular coordinate system in the plane is launched in each cross section is positioned on the blade slurry root medial axis, and its Y-axis is parallel to the blade rotation axle, when the cylndrical surface of X-axis and cut blade was tangent, each cross section was around the clockwise corner φ of the initial point of rectangular coordinate system and rotate the back to the reverse displacement A of X-axis, to the value of Y-axis postive direction displacement H be:
φ(°) A H
First cross section 35.5 38.4 24.8
Second cross section 35.1 59.8 38.3
The 3rd cross section 28.2 56.0 27.0
The 4th cross section 19.3 48.7 14.8
The 5th cross section 14.1 45.2 9.4
The 6th cross section 12 44.6 7.5
The big air quantity axial-flow blower of above-mentioned low noise, described blade is a hollow body.
The big air quantity axial-flow blower of above-mentioned low noise, the relative thickness of described blade tangent plane gradually changes along length of blade.The maximum ga(u)ge in blade tip cross section is 13% with respect to the maximum chord length in blade tip cross section, and the maximum ga(u)ge in the whole blade largest chord strong point cross section maximum chord length in its cross section relatively is 17%.
The utility model improves the blade structure of traditional axial-flow blower, makes it more reasonable.Its airflow on surface forms bigger eddy current when adopting airfoil blade can prevent the blade high speed rotating, thereby has reduced eddy current crack, has improved the efficient of axial-flow blower; Blade adopts hollow structure, can improve the rigidity and the intensity of blade, alleviates the weight of blade, and the deformation when reducing high speed rotating makes fan operation more steady.Compare with traditional axial-flow blower, the utility model efficient height, air quantity is big, static pressure is high, noise is low, in light weight, be suitable for using in all trades and professions.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a blower fan schematic representation of the present utility model;
Fig. 2 is the blade structure schematic representation;
Fig. 3 is the blade profile unfolded drawing;
Fig. 4 is blade profile rotation, translation schematic representation.
1,2,3, blade cut position each label is among the figure:; 4, blade; 5, drive motor; 6, drivign belt; 7, wheel hub; 8 housings; 9, blade slurry root.
Embodiment
The utility model in conjunction with the working condition that blower fan uses, has been designed the blower fan hollow thin-walled airfoil fan of efficient the best according to pneumatic principle, thereby has reached the purpose that improves blower fan cooling effectiveness and energy saving.The blower fan tip speed is 52m/s, fan noise≤80db.Show that through comparative trial the utility model is compared with similar blower fan, air quantity is big, noise is little, total pressure efficiency is high.Can economize on electricity under identical airflow pressure more than 20%, energy-saving effect is very obvious.
Referring to Fig. 2, Fig. 3, Fig. 4, the geometrical shape of blade 4 of the present utility model is determined by the geometrical shape in six cross sections and the spatial position in cross section, the geometrical shape of each blade profile is determined by the value of parameter x, Y1, Y2, six cross sections are respectively by six different radii (R=99.7mm, 134.7mm, 234.7mm, 334.7mml, 34.7mm the rotatingshaft with blade 500mm) is that the cylndrical surface cut blade of axis obtains.Each cross section is launched, with cross section front end (point corresponding with leading edge) is that initial point is set up rectangular coordinate system, a plurality of x, the Y1 that provides according to the utility model, the value of Y2 can be determined a plurality of points on the cross section contour, and these are connected the profile line that can obtain the cross section by smoothed curve.
The rectangular coordinate system initial point in certain cross section is moved on the blade slurry root medial axis OP, make its Y-axis be parallel to the blade rotation axle, X-axis is tangent with the cylndrical surface that intercepts this cross section, then with this cross section around the coordinate origin angle φ that turns clockwise, again with this cross section to left A, upwards translation H as Fig. 4, can obtain the spatial position in this cross section.At last the profile line in six cross sections is coupled together the shape that has just obtained whole blade with smooth curved surface.According to above-mentioned parameter, perhaps above-mentioned parameter is amplified with the geometric similarity ratio or dwindle and the blade produced has the reduction noise equally, increase the effect of air quantity, so all within protection domain of the present utility model.
Claims (3)
1, the big air quantity axial-flow blower of a kind of low noise comprises housing (8), wheel hub (7) and is arranged at wheel hub airfoil blade (4) on every side, it is characterized in that, the geometrical shape of described blade (4) is determined by the geometrical shape in its cross section and the spatial position in cross section:
The geometrical shape of a, blade profile is determined by following parameter:
The rotatingshaft with blade (4) with six different radiis is the cylndrical surface cut blade (4) of axis, is in the rectangular coordinate system of initial point with the cross section front end in plane is launched in each cross section, and the coordinate figure of respective point is on each cross section outer rim:
First cross section (radius R=99.7mm):
X/B x(mm) Y1(mm) Y2(mm)
0 0.0 0.0 0.0
0.002 0.2 2.8 -2.9
0.005 0.5 4.3 -3.8
0.0125 1.3 6.0 -4.8
0.025 2.7 7.8 -6.0
0.05 5.4 10.4 -8.1
0.1 10.7 13.5 -10.6
0.2 21.4 16.8 -13.2
0.3 32.1 18.5 -14.4
0.4 42.8 19.1 -14.6
0.5 53.6 18.6 -13.9
0.6 64.3 17.0 -12.7
0.7 75.0 14.6 -10.9
0.8 85.7 11.5 -8.9
0.9 96.4 7.5 -6.5
0.95 101.8 5.4 -5.2
1 107.1 0.0 0.0
Second cross section (radius R=134.7mm):
X/B x(mm) Y1(mm) Y2(mm)
0 0.0 0.0 0.0
0.002 0.3 2.2 -1.7
0.005 0.8 3.5 -2.5
0.0125 2.1 5.2 -3.5
0.025 4.1 7.1 -4.6
0.05 8.2 9.5 -6.1
0.1 16.4 12.4 -8.1
0.2 32.9 15.6 -10.2
0.3 49.4 17.2 -11.1
0.4 65.8 17.8 -11.1
0.5 82.3 17.4 -10.5
0.6 98.7 15.8 -8.8
0.7 115.2 12.9 -5.9
0.8 131.6 8.9 -2.8
0.9 148.1 4.4 -0.6
0.95 156.3 2.2 -0.4
1 164.5 -0.1 -1.3
The 3rd cross section (radius R=234.7mm):
X/B x(mm) Y1(mm) Y2(mm)
0 0.0 0.0 0.0
0.002 0.3 1.7 -1.2
0.005 0.7 2.7 -1.9
0.0125 1.8 4.1 -2.7
0.025 3.6 5.7 -3.6
0.05 7.2 7.6 -4.7
0.1 14.4 9.9 -6.2
0.2 28.8 12.6 -7.9
0.3 43.2 13.9 -8.5
0.4 57.5 14.3 -8.6
0.5 71.9 14.0 -8.0
0.6 86.3 12.8 -6.6
0.7 100.7 10.5 -4.4
0.8 115.1 7.3 -2.0
0.9 129.4 3.7 -0.4
0.95 136.7 1.8 -0.3
1 143.9 -0.1 -1.1
The 4th cross section (radius R=334.7mm):
X/B x(mm) Y1(mm) Y2(mm)
0 0.0 0.0 0.0
0.002 0.3 1.3 -0.9
0.005 0.6 2.1 -1.3
0.0125 1.5 3.2 -2.0
0.025 2.9 4.4 -2.7
0.05 5.9 5.9 -3.5
0.1 11.8 7.7 -4.6
0.2 23.6 9.7 -5.9
0.3 35.3 10.7 -6.4
0.4 47.1 11.1 -6.4
0.5 58.9 10.9 -6.0
0.6 70.6 9.9 -4.9
0.7 82.4 8.2 -3.2
0.8 94.2 5.7 -1.4
0.9 105.9 2.9 -0.3
0.95 111.8 1.4 -0.3
1 117.7 -0.1 -0.9
The 5th cross section (radius R=434.7mm):
X/B x(mm) Y1(mm) Y2(mm)
0 0.0 0.0 0.0
0.002 0.2 1.1 -0.6
0.005 0.5 1.7 -1.0
0.0125 1.3 2.7 -1.6
0.025 2.7 3.7 -2.2
0.05 5.3 5.0 -2.9
0.1 10.7 6.6 -3.8
0.2 21.3 8.3 -4.8
0.3 32.0 9.2 -5.2
0.4 42.7 9.4 -5.2
0.5 53.3 9.3 -4.8
0.6 64.0 8.5 -3.9
0.7 74.7 7.0 -2.5
0.8 85.3 4.9 -1.1
0.9 96.0 2.5 -0.2
0.95 101.3 1.2 -0.2
1 106.7 -0.2 -0.8
The 6th cross section (radius R=500mm):
X/B x(mm) Y1(mm) Y2(mm)
0 0.0 0.0 0.0
0.002 0.2 1.0 -0.5
0.005 0.5 1.6 -0.9
0.0125 1.3 2.5 -1.5
0.025 2.6 3.5 -2.0
0.05 5.2 4.7 -2.6
0.1 10.4 6.1 -3.4
0.2 20.9 7.8 -4.4
0.3 31.3 8.6 -4.7
0.4 41.8 8.9 -4.7
0.5 52.2 8.7 -4.4
0.6 62.6 8.0 -3.5
0.7 73.1 6.6 -2.2
0.8 83.5 4.7 -0.9
0.9 93.9 2.4 -0.1
0.95 99.2 1.2 -0.2
1 104.4 -0.2 -0.8
Wherein B is the maximum chord length in cross section;
The spatial position of b, blade profile is determined by following parameter:
The initial point that the rectangular coordinate system in the plane is launched in each cross section is positioned on blade slurry root (9) medial axis (OP), and its Y-axis is parallel to the blade rotation axle, when the cylndrical surface of X-axis and cut blade was tangent, each cross section was around the clockwise corner of the initial point of rectangular coordinate system (φ) and rotate the back to the reverse displacement of X-axis (A), to the value of Y-axis postive direction displacement (H) be:
φ(°) A H
First cross section 35.5 38.4 24.8
Second cross section 35.1 59.8 38.3
The 3rd cross section 28.2 56.0 27.0
The 4th cross section 19.3 48.7 14.8
The 5th cross section 14.1 45.2 9.4
The 6th cross section 12 44.6 7.5
According to the big air quantity axial-flow blower of the described low noise of claim 1, it is characterized in that 2, described blade is a hollow body.
3, according to claim 1 or the big air quantity axial-flow blower of 2 described low noises, it is characterized in that, the relative thickness of described blade tangent plane gradually changes along length of blade, the maximum ga(u)ge in blade tip cross section is 13% with respect to the maximum chord length in blade tip cross section, and the maximum ga(u)ge in the whole blade largest chord strong point cross section maximum chord length in its cross section relatively is 17%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201065963U CN201301831Y (en) | 2008-11-18 | 2008-11-18 | Low noise large air volume axial-flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201065963U CN201301831Y (en) | 2008-11-18 | 2008-11-18 | Low noise large air volume axial-flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201301831Y true CN201301831Y (en) | 2009-09-02 |
Family
ID=41085456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201065963U Expired - Fee Related CN201301831Y (en) | 2008-11-18 | 2008-11-18 | Low noise large air volume axial-flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201301831Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032375A (en) * | 2012-12-27 | 2013-04-10 | 江苏中金环保科技有限公司 | Blade for draught fan |
| CN105422509A (en) * | 2014-09-19 | 2016-03-23 | 重庆海光玻璃钢制品有限公司 | 2500m frost prevention machine blade |
| CN105889129A (en) * | 2014-09-19 | 2016-08-24 | 重庆海光玻璃钢制品有限公司 | 2100m frost protection machine blade |
| CN105889130A (en) * | 2014-09-19 | 2016-08-24 | 重庆海光玻璃钢制品有限公司 | 2500m frost protection machine rear wind direction blade |
-
2008
- 2008-11-18 CN CNU2008201065963U patent/CN201301831Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032375A (en) * | 2012-12-27 | 2013-04-10 | 江苏中金环保科技有限公司 | Blade for draught fan |
| CN103032375B (en) * | 2012-12-27 | 2015-05-20 | 江苏中金环保科技有限公司 | Blade for draught fan |
| CN105422509A (en) * | 2014-09-19 | 2016-03-23 | 重庆海光玻璃钢制品有限公司 | 2500m frost prevention machine blade |
| CN105889129A (en) * | 2014-09-19 | 2016-08-24 | 重庆海光玻璃钢制品有限公司 | 2100m frost protection machine blade |
| CN105889130A (en) * | 2014-09-19 | 2016-08-24 | 重庆海光玻璃钢制品有限公司 | 2500m frost protection machine rear wind direction blade |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201301831Y (en) | Low noise large air volume axial-flow fan | |
| CN103115021B (en) | Vane wheel device | |
| CN203463305U (en) | Wing type centrifugal fan | |
| CN102536900A (en) | Axial flow wind wheel | |
| CN100371645C (en) | Fan volute structure with air inlets on double sides for European-style smoke exhaust ventilator | |
| CN200996390Y (en) | Impeller combination for disrotatory axial-flow fan | |
| CN204476855U (en) | Low noise with conduit is without spiral case centrifugal blower | |
| CN109519397B (en) | Centrifugal compressor and design method thereof | |
| CN2437887Y (en) | Axial ventilator with hemmed blade | |
| CN206954495U (en) | New type propeller | |
| CN215860836U (en) | High-efficiency energy-saving centrifugal blower | |
| CN203532325U (en) | External rotor axial flow fan with blades having bionic characteristic | |
| CN215171043U (en) | Axial flow fan blade, axial flow fan and air conditioner | |
| CN101963158A (en) | Motor direct coupling type single stage high-speed blower | |
| US20180258945A1 (en) | Turbocharger compressor impeller with serrated leading edges | |
| CN201016344Y (en) | Broad profile and middle-broad profile of power station direct air cooling fan blade | |
| CN205937224U (en) | Impeller device and be equipped with this impeller device's axial -flow blower | |
| CN203098386U (en) | Axial fan blade | |
| CN211039097U (en) | Fan with tooth-shaped fan blades | |
| CN216306315U (en) | Three-dimensional flow curved surface centrifugal impeller series of high-specific-speed and high-efficiency blower | |
| CN106704266B (en) | Double-duct axial flow fan | |
| CN2563338Y (en) | Vane and axial flow fan made by said vane | |
| CN216894955U (en) | Environment-friendly purifies with energy-saving middling pressure centrifugal fan | |
| CN212899120U (en) | Three-dimensional axial double-suction centrifugal blower | |
| CN220850142U (en) | Low-rotation-speed energy-saving efficient fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090902 Termination date: 20101118 |