CN102720700B - The blade of axial fan and axial flow fan for air conditioner - Google Patents
The blade of axial fan and axial flow fan for air conditioner Download PDFInfo
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- CN102720700B CN102720700B CN201210225677.6A CN201210225677A CN102720700B CN 102720700 B CN102720700 B CN 102720700B CN 201210225677 A CN201210225677 A CN 201210225677A CN 102720700 B CN102720700 B CN 102720700B
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- 238000005452 bending Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- -1 Polypropylene Polymers 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 8
- 238000004378 air conditioning Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 241000883990 Flabellum Species 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000012938 design process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 230000000704 physical effect Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
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- 238000004088 simulation Methods 0.000 description 1
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Abstract
The invention provides a kind of blade of axial fan, that determine with H%=0.80, r=80mm when intercepting blade with the first cylndrical surface that is fan axis coaxle, blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=0 °, α
2=177.7 °, β=38.6 °, b=174.2, P
1x=27.16, P
1y=96.24, P
1z=-9.65, P
2x=-99.95, P
2y=3.08, P
2z=-83.92; Above-mentioned parameter value respective change when intercepting blade respectively in the cylndrical surface that H%=0.57, r=80, H%=0.44, r=80, H%=0.36, r=80, H%=0.31, r=80 determine, not marking unit is mm.Also provide axial flow fan for air conditioner.By the parameter matching of the best, improve the air quantity of fan, reduce noise, cost performance improves.
Description
Technical field
The invention belongs to air-conditioning technical field, specifically, relate to a kind of blade and axial flow fan for air conditioner of axial flow fan for air conditioner.
Background technique
In the design process of the compound ventilation air-changing device axial fans such as air-conditioning, the design of blade angle directly affects the aeroperformance of blade, therefore produces material impact to air quantity of fan.And blade radial bending angle and sweepforward bending angle not only affect air quantity, also there is material impact to aerodynamic noise.Often be difficult at present reach best parameter matching in fan design process, cause old aerofoil fan to there is the higher problem of deficiency in draught, noise.Along with computer technology and computation fluid dynamics (ComputationalFluidDynamics, be called for short CFD) development, and its to have the cycle short, cost is low, effectively can analyze the advantage such as various influence factor and quantification flow field parameter, become the brand-new means of one in turbomachine research and design research and development field, can accomplish just can more adequately estimate its aeroperformance and acoustic characteristic in the fan design stage, for the parameter optimization of fan and structural design provide foundation, and expense and the workload of test can be reduced, shorten the R&D cycle, improve the economic benefit of enterprise.
More and more higher today is being required to the Energy Efficiency Ratio of the ventilation devices such as air-conditioning, existing axial fan mechanical efficiency is generally on the low side, the requirement of high air quantity, high blast, low noise can not be met, in the urgent need to improvement, make breakthroughs to make overall performance, energy-saving and noise-reducing, object of the present invention is just this.
For the design of open low-pressure axial flow fan, generally by design units level aerofoil profile, the air-flow angle of attack of adjustment different cross section aerofoil profile, the curvature of blade, radian and lobe numbers etc. usually will promote air quantity and the blast of fan, reduce the aerodynamic noise of fan.Current open low-pressure axial flow fan deficiency in draught, noise are higher, in the urgent need to address.
Summary of the invention
The invention provides a kind of blade and axial flow fan for air conditioner of axial fan, can solve that blade design that prior art exists is unreasonable causes the problem that the air quantity of axial fan and blast are not enough, noise is higher.
For solving the problems of the technologies described above, on the one hand, the invention provides a kind of blade of axial fan: comprise multiple characteristic cross-section coincided, the profile molded line of described characteristic cross-section is the closed curve surrounded by inner arc curve and back of the body arc curve, with H%=0.80, when what r=80mm determined intercepts described blade with the first cylndrical surface of fan axis coaxle, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=0 °, α
2=177.7 °, β=38.6 °, b=174.2mm, P
1x=27.16mm, P
1y=96.24mm, P
1z=-9.65mm, P
2x=-99.95mm, P
2y=3.08mm, P
2z=-83.92mm;
Determine with H%=0.57, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=3.8 °, α
2=162.0 °, β=35.0 °, b=236.0mm, P
1x=25.37mm, P
1y=137.68mm, P
1z=8.46mm, P
2x=-139.99mm, P
2y=-0.27mm, P
2z=-88.09mm;
Determine with H%=0.44, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=10.1 °, α
2=149.5 °, β=30.3 °, b=301.7mm, P
1x=15.00mm, P
1y=179.36mm, P
1z=21.57mm, P
2x=-178.86mm, P
2y=-20.25mm, P
2z=-95.15mm;
Determine with H%=0.36, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=16.7 °, α
2=145.6 °, β=26.5 °, b=367.6mm, P
1x=-4.79mm, P
1y=219.95mm, P
1z=30.65mm, P
2x=-214.11mm, P
2y=-50.57mm, P
2z=-103.9mm;
Determine with H%=0.31, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=24.0 °, α
2=142.8 °, β=23.4 °, b=435.2mm, P
1x=-35.1mm, P
1y=257.62mm, P
1z=36.70mm, P
2x=-242.58mm, P
2y=-93.56mm, P
2z=-115.2mm;
Relevant parameter is defined as follows:
The ratio of H%:r and R;
R: impeller circular hub external cylindrical surface radius;
R: the radius of the different cylndrical surface concentric from wheel hub incircle cylinder is R;
L
1: the line of the arcuate midway point of the leaf cross-section that the different cylndrical surface that the radius concentric from wheel hub incircle cylinder is R intercept;
L
2: the line of blade root mid-chord Q and fan center's point O;
L
3: the line of arcuate midway point N and fan center's point O;
α
1: L
2with L
3between angle, be called blade radial bending angle;
L
4: the fan leading edge cylndrical surface point of intersection corresponding with R is along leading edge curve near tangent;
L
5: pass through L
4the line of point of contact P and centerline O;
α
2: L
4with L
5between angle, be called blade sweepforward bending angle;
β: the angle of the string of a musical instrument of the leaf cross-section intercepted with the different cylndrical surface being R by the radius concentric with wheel hub cylndrical surface from the datum plane of fan axes normal, is called blade angle;
Point P
1, P
2: refer to that radius is different cylndrical surface molded line upper blade crossing with the blade pressure surface leading edge of R and trailing edge point, coordinate is expressed as P
1(P
1x, P
1y, P
1z), P
2(P
2x, P
2y, P
2z);
B: radius is the cylndrical surface of R and the line of blade inlet edge and trailing edge intersection point, is called aerofoil profile chord length;
Xy plane, z-axis: based on rectangular coordinate system in space, true origin is blade root side motor axis hole central point, and xy plane is with through described initial point and perpendicular to the plane of fan axis; With initial point and described first cylndrical surface and trailing edge line intersection point line for x-axis postive direction, to point to the direction of suction surface for z-axis direction perpendicular to described xy plane from pressure side.
Further, determine with H%=0.67, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=1.5 °, α
2=171.6 °, β=37.1 °, b=204.7mm, P
1x=27.27mm, P
1y=116.86mm, P
1z=0.10mm, P
2x=-119.95mm, P
2y=3.45mm, P
2z=-85.62mm.
Further, determine with H%=0.5, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=6.8 °, α
2=153.2 °, β=32.6 °, b=268.5mm, P
1x=21.31mm, P
1y=158.58mm, P
1z=15.56mm, P
2x=-159.78mm, P
2y=-8.39mm, P
2z=-91.29mm.
Further, determine with H%=0.4, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=13.4 °, α
2=149.2 °, β=28.3 °, b=334.8mm, P
1x=6.34mm, P
1y=199.89mm, P
1z=26.62mm, P
2x=-197.02mm, P
2y=-34.39mm, P
2z=-99.33mm.
Further, determine with H%=0.33, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=20.2 °, α
2=138.2 °, β=24.8 °, b=400.8mm, P
1x=-18.6mm, P
1y=239.28mm, P
1z=33.95mm, P
2x=-229.58mm, P
2y=-69.93mm, P
2z=-109.1mm.
Further, determine with H%=0.29, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=26.6 °, α
2=140.8 °, β=21.9 °, b=439.3mm, P
1x=-46.5mm, P
1y=265.12mm, P
1z=35.93mm, P
2x=-263.49mm, P
2y=-94.72mm, P
2z=-117.7mm.
Again further, be continuous and derivable transition between adjacent every two characteristic cross-sections.
Wherein, the error of described H% is in ± 1; Described α
1, α
2, β error in ± 1 °; Described r, b, P
1x, P
1y, P
1z, P
2x, P
2y, P
2zerror in ± 1mm.
Preferably, described blade material adopts Reinforced Polypropylene.
On the other hand, the present invention also provides a kind of axial flow fan for air conditioner, and all blades of fan all adopt blade of the present invention.
The present invention mainly solves air-conditioning outer machine and compound ventilation air-changing device open low-pressure axial flow fan mechanical efficiency used is low, and noise is comparatively large, the problem that overall weight is larger.
The aerofoil profile of the blade that best parameter matching obtains and botanical origin stack manner can reach the object improving air quantity of fan, raise the efficiency, reduce noise.The present invention, by carrying out best parameter matching to multiple characteristic cross-sections of blade, forms the shaping rule of specific vane type line.
Blade is made by Shooting Technique.The material of blade preferably strengthens PP, and other materials also can be adopted to make.
The wheel hub of axial fan of the present invention is circular, no matter but fan hub shape is circular or triangle or other arbitrary shapes, and the difference change of wheel hub stiffening rib, the aerofoil profile of the blade limited by characteristic cross-section of the present invention and molded line are also be equal to blade of the present invention.
Compared with prior art, advantage of the present invention and good effect are:
1, the mechanical efficiency of fan is higher, realizes the requirement of high air quantity, high blast, low noise;
2, under the prerequisite of flabellum performance raising, flabellum average wall thickness is thinner, and component costs reduces;
3, blade material application strengthens the physical property that PP can improve fan.
The present invention is by conjunction with means such as computation fluid dynamics (CFD) simulation analysis and analysis of experimental data etc., and botanical origin aerofoil profile reasonable in design, adjustment vane curvature, radian, inclination angle, make the performance of fan get a promotion, reach the requirement of high-efficient low-noise.
Axial fan of the present invention is by improving botanical origin aerofoil profile and aerofoil profile stack manner, and obtain best parameter matching, improve air quantity and the blast of fan, reduce noise, mechanical efficiency is higher, and cost performance is very high.
Accompanying drawing explanation
Fig. 1 is the plan view of the axial fan adopting blade of the present invention, there is shown some structural parameter of the characteristic cross-section defining blade;
Fig. 2 is another view of the axial fan adopting blade of the present invention, shows 10 characteristic cross-sections of one of them blade, and parameter b, β;
Fig. 3 is the front view of one of them characteristic cross-section of blade, shows pressure side, suction surface, and two some P for limiting characteristic cross-section
1, P
2position;
Fig. 4 is the blade schematic diagram coincided by different characteristic cross section overlooked from blade page top;
Fig. 5 is the blade schematic diagram coincided by different characteristic cross section overlooked from blade page root;
Fig. 6 is the three-dimensionally shaped figure of axial fan of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As Figure 1-5, the blade of axial fan of the present invention is the obform body coincided by multiple characteristic cross-section, and the profilogram (as shown in Figure 3) of characteristic cross-section is the closed curve surrounded by pressure side curve and suction surface curve.The characteristic cross-section parameter restriction as shown in Table 1 of blade, table 1 lists 10 characteristic cross-sections and relevant parameter thereof.
Table 1: 10 characteristic cross-sections of blade and determine the relevant parameter of this characteristic cross-section
(not marking unit: mm)
Composition graphs 1-3, the relevant parameter in his-and-hers watches 1 is defined as follows:
The ratio of H%:r and R;
R: impeller circular hub external cylindrical surface radius, as shown in Figure 1;
R: the radius of the different cylndrical surface concentric from wheel hub incircle cylinder is R, as shown in Figure 1;
L
1: the line of the arcuate midway point of the leaf cross-section that the different cylndrical surface that the radius concentric from wheel hub incircle cylinder is R intercept, as shown in Figure 1;
L
2: the line of blade root mid-chord Q and fan center's point O, as shown in Figure 1;
L
3: the line of arcuate midway point N and fan center's point O, as shown in Figure 1;
α
1: L
2with L
3between angle, be called blade radial bending angle, as shown in Figure 1;
L
4: the fan leading edge cylndrical surface point of intersection corresponding with R along leading edge curve near tangent, as shown in Figure 1;
L
5: pass through L
4the line of point of contact P and centerline O, as shown in Figure 1;
α
2: L
4with L
5between angle, be called blade sweepforward bending angle, as shown in Figure 1;
β: the angle of the string of a musical instrument of the leaf cross-section intercepted with the different cylndrical surface being R by the radius concentric with wheel hub cylndrical surface from the datum plane of fan axes normal, is called blade angle, as shown in Figure 2;
Point P
1, P
2: refer to that radius is different cylndrical surface molded line upper blade crossing with the blade pressure surface leading edge of R and trailing edge point, coordinate is expressed as P
1(P
1x, P
1y, P
1z), P
2(P
2x, P
2y, P
2z), as shown in Figure 3;
B: radius is the cylndrical surface of R and the line of blade inlet edge and trailing edge intersection point, is called aerofoil profile chord length, the leading edge 1 of blade, trailing edge 2, pressure side 3, suction surface 4, as shown in Figures 2 and 3;
Xy plane, z-axis: based on rectangular coordinate system in space, true origin is blade root side motor axis hole central point, and xy plane is with through described initial point and perpendicular to the plane of fan axis; Be x-axis postive direction with initial point and the first cylndrical surface (i.e. the cylndrical surface at characteristic cross-section 1 place of table 1) and trailing edge line intersection point line, to point to the direction of suction surface for z-axis direction perpendicular to described xy plane from pressure side.In FIG, x-axis direction be level to the right, y-axis direction is vertically upward, z-axis direction be perpendicular to paper point to reader (x, y, z axle is not shown).
To be numbered the characteristic cross-section of 1, data in his-and-hers watches 1 are explained as follows further: with H%=0.80, when what r=80mm determined intercepts blade with first cylndrical surface (the first namely above-mentioned cylndrical surface) of fan axis coaxle, blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=0 °, α
2=177.7 °, β=38.6 °, b=174.2mm, P
1x=27.16mm, P
1y=96.24mm, P
1z=-9.65mm, P
2x=-99.95mm, P
2y=3.08mm, P
2z=-83.92mm, can uniquely determine this characteristic cross-section according to these parameters above-mentioned, and the parameter of the characteristic cross-section of other numberings similarly, repeats no more.
10 characteristic cross-sections can be determined according to the parameter in table 1, but just can obtain blade of the present invention according to characteristic cross-section 1, characteristic cross-section 3, characteristic cross-section 5, characteristic cross-section 7, characteristic cross-section 9; In order to optimize further blade, characteristic cross-section 2 can be increased to determine blade of the present invention; For further optimization, characteristic cross-section 4 can be increased again to determine blade of the present invention; Characteristic cross-section 6 can also be increased to determine blade of the present invention; Can also continue to increase characteristic cross-section 8 to determine blade of the present invention; Continue again, characteristic cross-section 10 can also be increased again and optimize blade of the present invention further.And, be continuous and derivable transition between adjacent every two characteristic cross-sections.
Wherein, the parameter shown in table 1 is only most preferred value, and each parameter value has allowed error, and the error of H% is in ± 1; Described α
1, α
2, β error in ± 1 °; Described r, b, P
1x, P
1y, P
1z, P
2x, P
2y, P
2zerror in ± 1mm.
Blade material adopts Reinforced Polypropylene (PP).
On the other hand, the present invention also provides a kind of axial flow fan for air conditioner, and all blades of fan all adopt blade of the present invention.
Technique effect of the present invention is described in detail by following laboratory data.
Table 2 aerofoil fan of the present invention and existing aerofoil fan laboratory data contrast
Wherein aerofoil fan of the present invention and existing aerofoil fan are all the fans with three blades.According to table 2 Data Comparison, can find out that the air quantity of the axial flow fan for air conditioner adopting blade of the present invention is large, noise is low.
The above is only preferred embodiment of the present invention, and be not restriction the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equivalent variations.But everyly do not depart from technical solution of the present invention content, any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (5)
1., a kind of blade of axial fan, comprise multiple characteristic cross-section coincided, the profile molded line of described characteristic cross-section is the closed curve surrounded by inner arc curve and back of the body arc curve, it is characterized in that:
Determine with H%=0.80, r=80mm intercept described blade with the first cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=0 °, α
2=177.7 °, β=38.6 °, b=174.2mm, P
1x=27.16mm, P
1y=96.24mm, P
1z=-9.65mm, P
2x=-99.95mm, P
2y=3.08mm, P
2z=-83.92mm;
Determine with H%=0.57, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=3.8 °, α
2=162.0 °, β=35.0 °, b=236.0mm, P
1x=25.37mm, P
1y=137.68mm, P
1z=8.46mm, P
2x=-139.99mm, P
2y=-0.27mm, P
2z=-88.09mm;
Determine with H%=0.44, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=10.1 °, α
2=149.5 °, β=30.3 °, b=301.7mm, P
1x=15.00mm, P
1y=179.36mm, P
1z=21.57mm, P
2x=-178.86mm, P
2y=-20.25mm, P
2z=-95.15mm;
Determine with H%=0.36, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=16.7 °, α
2=145.6 °, β=26.5 °, b=367.6mm, P
1x=-4.79mm, P
1y=219.95mm, P
1z=30.65mm, P
2x=-214.11mm, P
2y=-50.57mm, P
2z=-103.9mm;
Determine with H%=0.31, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=24.0 °, α
2=142.8 °, β=23.4 °, b=435.2mm, P
1x=-35.1mm, P
1y=257.62mm, P
1z=36.70mm, P
2x=-242.58mm, P
2y=-93.56mm, P
2z=-115.2mm;
Relevant parameter is defined as follows:
The ratio of H%:r and R;
R: impeller circular hub external cylindrical surface radius;
R: the radius of the different cylndrical surface concentric from wheel hub incircle cylinder is R;
L
1: the line of the arcuate midway point of the leaf cross-section that the different cylndrical surface that the radius concentric from wheel hub incircle cylinder is R intercept;
L
2: the line of blade root mid-chord Q and fan center's point O;
L
3: the line of arcuate midway point N and fan center's point O;
α
1: L
2with L
3between angle, be called blade radial bending angle;
L
4: the fan leading edge cylndrical surface point of intersection corresponding with R is along leading edge curve near tangent;
L
5: pass through L
4the line of point of contact P and centerline O;
α
2: L
4with L
5between angle, be called blade sweepforward bending angle;
β: the angle of the string of a musical instrument of the leaf cross-section intercepted with the different cylndrical surface being R by the radius concentric with wheel hub cylndrical surface from the datum plane of fan axes normal, is called blade angle;
Point P
1, P
2: refer to that radius is different cylndrical surface molded line upper blade crossing with the blade pressure surface leading edge of R and trailing edge point, coordinate is expressed as P
1(P
1x, P
1y, P
1z), P
2(P
2x, P
2y, P
2z);
B: radius is the cylndrical surface of R and the line of blade inlet edge and trailing edge intersection point, is called aerofoil profile chord length;
Xy plane, z-axis: based on rectangular coordinate system in space, true origin is blade root side motor axis hole central point, and xy plane is with through described initial point and perpendicular to the plane of fan axis; With initial point and described first cylndrical surface and trailing edge line intersection point line for x-axis postive direction, to point to the direction of suction surface for z-axis direction perpendicular to described xy plane from pressure side;
Determine with H%=0.67, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=1.5 °, α
2=171.6 °, β=37.1 °, b=204.7mm, P
1x=27.27mm, P
1y=116.86mm, P
1z=0.10mm, P
2x=-119.95mm, P
2y=3.45mm, P
2z=-85.62mm;
Determine with H%=0.5, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=6.8 °, α
2=153.2 °, β=32.6 °, b=268.5mm, P
1x=21.31mm, P
1y=158.58mm, P
1z=15.56mm, P
2x=-159.78mm, P
2y=-8.39mm, P
2z=-91.29mm;
Determine with H%=0.4, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=13.4 °, α
2=149.2 °, β=28.3 °, b=334.8mm, P
1x=6.34mm, P
1y=199.89mm, P
1z=26.62mm, P
2x=-197.02mm, P
2y=-34.39mm, P
2z=-99.33mm;
Determine with H%=0.33, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=20.2 °, α
2=138.2 °, β=24.8 °, b=400.8mm, P
1x=-18.6mm, P
1y=239.28mm, P
1z=33.95mm, P
2x=-229.58mm, P
2y=-69.93mm, P
2z=-109.1mm;
Determine with H%=0.29, r=80mm intercept described blade with the cylndrical surface of fan axis coaxle time, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α
1=26.6 °, α
2=140.8 °, β=21.9 °, b=439.3mm, P
1x=-46.5mm, P
1y=265.12mm, P
1z=35.93mm, P
2x=-263.49mm, P
2y=-94.72mm, P
2z=-117.7mm.
2. the blade of axial fan according to claim 1, is characterized in that: be continuous and derivable transition between adjacent every two characteristic cross-sections.
3. the blade of axial fan according to claim 1, is characterized in that: the error of described H% is in ± 1; Described α
1, α
2, β error in ± 1 °; Described r, b, P
1x, P
1y, P
1z, P
2x, P
2y, P
2zerror in ± 1mm.
4. the blade of the axial fan according to Claims 2 or 3, is characterized in that: described blade material adopts Reinforced Polypropylene.
5. an axial flow fan for air conditioner, is characterized in that: all blades of described fan all adopt blade described in aforementioned arbitrary claim.
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| CN201210225677.6A CN102720700B (en) | 2012-06-21 | 2012-07-03 | The blade of axial fan and axial flow fan for air conditioner |
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| CN201210208697.2 | 2012-06-21 | ||
| CN201210208697 | 2012-06-21 | ||
| CN201210225677.6A CN102720700B (en) | 2012-06-21 | 2012-07-03 | The blade of axial fan and axial flow fan for air conditioner |
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| CN102720700A CN102720700A (en) | 2012-10-10 |
| CN102720700B true CN102720700B (en) | 2015-11-25 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106438470B (en) * | 2016-11-03 | 2019-03-29 | 合肥华凌股份有限公司 | Aerofoil fan and refrigeration equipment |
| CN108268672B (en) * | 2016-12-30 | 2021-06-01 | 格朗吉斯铝业（上海）有限公司 | Axial fan, method for designing three-dimensional blade of axial fan and computer equipment |
| CN107970826B (en) * | 2017-11-27 | 2020-07-31 | 江苏大学 | Stirring device |
| CN108757568B (en) * | 2018-05-29 | 2020-10-23 | 青岛科技大学 | Axial flow fan blade |
| CN109185225B (en) * | 2018-11-26 | 2024-07-09 | 珠海格力电器股份有限公司 | Fan blade and fan |
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| DE4425808A1 (en) * | 1994-07-21 | 1996-02-01 | Mowa Gmbh I Gr | Cleaning trolley for refuse containers |
| CN101025281A (en) * | 2003-03-31 | 2007-08-29 | 东芝开利株式会社 | Outdoor unit for air conditioner |
| CN201771860U (en) * | 2010-09-12 | 2011-03-23 | 美的集团有限公司 | Fan blade |
| CN102213235A (en) * | 2011-04-01 | 2011-10-12 | 海尔集团公司 | Blade of air-condition axial fan and air-condition axial fan |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02173396A (en) * | 1988-12-26 | 1990-07-04 | Toshiba Corp | Blade structure for axial flow fan |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4425808A1 (en) * | 1994-07-21 | 1996-02-01 | Mowa Gmbh I Gr | Cleaning trolley for refuse containers |
| CN101025281A (en) * | 2003-03-31 | 2007-08-29 | 东芝开利株式会社 | Outdoor unit for air conditioner |
| CN201771860U (en) * | 2010-09-12 | 2011-03-23 | 美的集团有限公司 | Fan blade |
| CN102213235A (en) * | 2011-04-01 | 2011-10-12 | 海尔集团公司 | Blade of air-condition axial fan and air-condition axial fan |
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| CN102720700A (en) | 2012-10-10 |
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