CN102213235B - The blade of axial flow fan for air conditioner, axial flow fan for air conditioner - Google Patents
The blade of axial flow fan for air conditioner, axial flow fan for air conditioner Download PDFInfo
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Abstract
The blade of axial flow fan for air conditioner, when blade is cut on the face of cylinder with fan axis coaxle determined with H%=0.7, r=38.18, has the characteristic cross-section of satisfied following condition: α1=0 °, α2=178 °, β=33.2 °, b=84.7, P1x=48.919, P1y=15.919, P1z=-10.865, P2x=26.459, P2y=-44.119, P2z=20.478；Intercept above-mentioned parameter value respective change during blade respectively on the face of cylinder that H%=0.3, r=38.18, H%=0.19, r=38.18 determine, the unit not marked is mm。Also providing for axial flow fan for air conditioner, all blades are blade of the present invention。By best parameter coupling, the axial flow fan for air conditioner with blade of the present invention is made to reach the air quantity of the best within the scope of declared working condition and reduce the purpose of noise。
Description
Technical field
The present invention relates to the blade of a kind of axial flow fan for air conditioner and there is the axial flow fan for air conditioner of this blade。
Background technology
In the design process of axial flow fan for air conditioner, the design of blade angle directly affects the aeroperformance of blade, therefore air quantity of fan is produced material impact。And blade radial angle of bend and sweepforward angle of bend not only affect air quantity, aerodynamic noise is also had material impact。In fan design process, often it is extremely difficult at present the parameter coupling of the best, causes that old aerofoil fan exists the problem that deficiency in draught, noise are higher。Along with computer technology and computational fluid dynamics (ComputationalFluidDynamics, be called for short CFD) development, and its to have the cycle short, cost is low, can effectively analyze the advantage such as various influence factor and quantification flow field parameter, become a kind of full new tool in turbomachine research and design research and development field, can accomplish just can relatively accurately estimate its aeroperformance and acoustic characteristic in the fan design stage, parameter optimization and structural design for fan provide foundation, and expense and the workload of test can be reduced, shorten the R&D cycle, improve the economic benefit of enterprise。
Summary of the invention
For Problems existing in correlation technique, it is an object of the invention to provide the blade of a kind of axial flow fan for air conditioner and there is the axial flow fan for air conditioner of this blade, with the problem solving to cause owing to blade design is unreasonable aerofoil fan deficiency in draught, noise higher in prior art。
For achieving the above object, on the one hand, the present invention provides the blade of a kind of axial flow fan for air conditioner, coincided by multiple characteristic cross-sections and form, the profile molded line of characteristic cross-section is the closed curve surrounded by inner arc curve and back of the body curved line, when intercepting described blade on first face of cylinder with fan axis coaxle determined with H%=0.7, r=38.18mm, blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=0 °, α2=178 °, β=33.2 °, b=84.7mm, P1x=48.919mm, P1y=15.919mm, P1z=-10.865mm, P2x=26.459mm, P2y=-44.119mm, P2z=20.478mm；When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.3, r=38.18mm, blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=29 °, α2=144 °, β=28.4 °, b=177.9mm, P1x=71.443mm, P1y=102.571mm, P1z=-46.663mm, P2x=115.616mm, P2y=-47.518mm, P2z=37.948mm；When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.19, r=38.18mm, blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=55 °, α2=134 °, β=24.9 °, b=272.3mm, P1x=57.071mm, P1y=184.243mm, P1z=-85.508mm, P2x=199.547mm, P2y=-19.016mm, P2z=28.289mm；Relevant parameter definition is as follows:
The ratio of H% r and R；
The wheel hub inscribed cylinder radius surface of r fan；
The radius on the different faces of cylinder that R is concentric from described wheel hub inscribed circle cylinder is R；
L1The line of the arcuate midway point of the leaf cross-section that the different faces of cylinder that radius be R concentric from described wheel hub inscribed circle cylinder intercept；
L2The line of rotary middle point when the blade root mid-chord of blade and fan work；
L3The line of rotary middle point when described arcuate midway point and described fan work；
α1—L2With L3Between angle；
L4The face of cylinder point of intersection that the leading edge of fan is corresponding with R, along described leading edge curve near tangent；
L5Pass through L4The line of point of contact P and described rotary middle point；
α2—L4With L5Between angle；
Datum plane vertical from the axis of fan for β and the angle of the string of a musical instrument of the leaf cross-section intercepted by the different faces of cylinder that the radius concentric with the wheel hub face of cylinder is R, be called blade angle；
P1、P2Referring to that radius is the intersection point that molded line blade trailing edge and leading edge are intersected in the R difference face of cylinder with blade pressure surface, coordinate representation is P1(P1x, P1y, P1z), P2(P2x, P2y, P2z)；
B radius is the face of cylinder and the line of blade inlet edge and trailing edge intersection point of R, is called aerofoil profile chord length；
X/y plane, z-axis are with the blade root side motor axis hole central point of blade for initial point, with through described initial point and be perpendicular to the plane of fan axis for x/y plane, with initial point and described first face of cylinder and trailing edge line intersection point line for x-axis positive direction, point to the direction of suction surface for z-axis direction from described pressure face being perpendicular to described x/y plane。
Preferably, when intercepting blade on the face of cylinder with fan axis coaxle determined with H%=0.6, r=38.18mm, blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=6 °, α2=172 °, β=32.6 °, b=111.6mm, P1x=53.557mm, P1y=36.832mm, P1z=-22.523mm, P2x=30.425mm, P2y=-57.439mm, P2z=32.593mm；When intercepting blade on the face of cylinder with fan axis coaxle determined with H%=0.27, r=38.18mm, blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=34 °, α2=142 °, β=27.5 °, b=199.4mm, P1x=69.824mm, P1y=121.345mm, P1z=-54.265mm, P2x=132.953mm, P2y=-43.859mm, P2z=37.935mm。
Preferably, when intercepting blade on the face of cylinder with fan axis coaxle determined with H%=0.5, r=38.18mm, blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=13 °, α2=152 °, β=31.1 °, b=130.9mm, P1x=61.880mm, P1y=50.703mm, P1z=-28.457mm, P2x=51.763mm, P2y=-60.997mm, P2z=39.219mm；When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.25, r=38.18mm, blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=39 °, α2=136 °, β=26.7 °, b=223.5mm, P1x=65.325mm, P1y=140.562mm, P1z=-62.941mm, P2x=149.661mm, P2y=-40.330mm, P2z=37.618mm。
Preferably, when intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.4, r=38.18mm, blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=19 °, α2=150 °, β=30.5 °, b=142.9mm, P1x=67.242mm, P1y=67.108mm, P1z=-34.190mm, P2x=76.975mm, P2y=-55.677mm, P2z=38.305mm；When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.22, r=38.18mm, blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=44 °, α2=132 °, β=26.1 °, b=249.7mm, P1x=58.171mm, P1y=159.738mm, P1z=-72.537mm, P2x=165.948mm, P2y=-36.897mm, P2z=37.289mm。
Preferably, when intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.35, r=38.18mm, blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=24 °, α2=147 °, β=29.4 °, time, b=158.9mm, P1x=70.498mm, P1y=84.439mm, P1z=-40.077mm, P2x=97.257mm, P2y=-51.391mm, P2z=38.015mm；When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.20, r=38.18mm, blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=49 °, α2=137 °, β=25.6 °, b=275.4mm, P1x=49.684mm, P1y=177.165mm, P1z=-82.016mm, P2x=180.880mm, P2y=-33.739mm, P2z=36.888mm。
Preferably, it is continuous and derivable transition between adjacent each two characteristic cross-section。
Preferably, the error of H% is in ± 1%；α1, α2, the error of β is in ± 1 °；State r, b, P1x, P1y, P1z, P2x, P2y, P2zError in ± 1mm。
Preferably, blade is made by Shooting Technique, and material is RPP。
On the other hand, the present invention also provides for a kind of axial flow fan for air conditioner, and all blades of fan are the blade of the present invention。
Compared to prior art, the beneficial effects of the present invention is: by best parameter coupling, make the axial flow fan for air conditioner with blade of the present invention reach the air quantity of the best within the scope of declared working condition and reduce the purpose of noise。
Accompanying drawing explanation
Fig. 1 is the top view of the fan with blade of the present invention, it is shown that in order to define some structural parameters of the characteristic cross-section of blade；
Fig. 2 is the left view of Fig. 1, it is shown that in order to limit the parameter beta in leaf characteristic cross section；
Fig. 3 is another view of the fan with blade of the present invention, it is shown that 11 characteristic cross-sections of one of them blade, also clearly show parameter b, β；
Fig. 4 is the enlarged diagram of a blade in Fig. 1, it is shown that a characteristic cross-section of pressure face, suction surface, leading edge, trailing edge and blade and aerofoil profile chord length thereof；
Fig. 5 is the front view of characteristic cross-section in Fig. 4, it is shown that for limiting two some P of characteristic cross-section1、P2Position；
Fig. 6 is the blade schematic diagram coincided by different characteristic cross section overlooked from leaf top；
Fig. 7 is the blade schematic diagram coincided by different characteristic cross section overlooked from blade root；
Fig. 8 is the pressure-plotting of a characteristic cross-section of blade of the present invention；
Fig. 9 is the pressure-plotting in another feature cross section of blade of the present invention；
Detailed description of the invention
As shown in figs. 1-7, the blade of the axial flow fan for air conditioner of the present invention is described, it is the obform body coincided by multiple characteristic cross-sections, and the profile molded line (such as shown in Fig. 5) of characteristic cross-section is the closed curve surrounded by pressure face curve and suction surface curve。The characteristic cross-section of blade parameter shown in subordinate list 1 limits, and subordinate list 1 illustrates 11 characteristic cross-sections and relevant parameter thereof。
Subordinate list 1: the characteristic cross-section of blade and determine the relevant parameter of this characteristic cross-section
Define as follows in conjunction with the relevant parameter in-5 pairs of subordinate lists of Fig. 11:
The ratio of H% r and R；
The wheel hub inscribed cylinder radius surface of r fan, as shown in Figure 1；Although Fig. 1 illustrates that fan hub is shaped as triangle, but fan hub can also be circle etc.；
The radius on the different faces of cylinder that R is concentric from described wheel hub inscribed circle cylinder is R, as shown in Figure 1；
L1The line of the arcuate midway point of the leaf cross-section that the different faces of cylinder that radius be R concentric from described wheel hub inscribed circle cylinder intercept, as shown in Figure 1；
L2The line of rotary middle point O when the blade root mid-chord Q of blade and fan work, as shown in Figure 1；
L3The line of rotary middle point when described arcuate midway point and described fan work, as shown in Figure 1；
α1—L2With L3Between angle, be called blade radial angle of bend, as shown in Figure 1；
L4The face of cylinder point of intersection that the leading edge of fan is corresponding with R, along described leading edge curve near tangent, as shown in Figure 1；
L5Pass through L4The line of point of contact P and described rotary middle point, as shown in Figure 1；
α2—L4With L5Between angle, be called blade sweepforward angle of bend, as shown in Figure 1；
Datum plane vertical from the axis of fan for β and the angle of the string of a musical instrument of the leaf cross-section intercepted by the different faces of cylinder that the radius concentric with the wheel hub face of cylinder is R, be called blade angle, as shown in Figure 2,3；
P1、P2Referring to that radius is the intersection point that molded line blade trailing edge and leading edge are intersected in the R difference face of cylinder with blade pressure surface, coordinate representation is P1(P1x, P1y, P1z), P2(P2x, P2y, P2z), shown in Figure 4 and 5；In order to be illustrated more clearly that P1、P2, Fig. 4 has illustrated the chord length b of a characteristic cross-section, the trailing edge 17 of blade, leading edge 15, pressure face 19, suction surface 13；
B radius is the face of cylinder and the line of blade inlet edge and trailing edge intersection point of R, is called aerofoil profile chord length, as shown in Figure 3,4；
X/y plane, z-axis are with the blade root side motor axis hole central point of blade for initial point, with through initial point and be perpendicular to the plane of fan axis for x/y plane, (described below with initial point and first face of cylinder, namely, the face of cylinder at characteristic cross-section 1 place of subordinate list 1) and trailing edge line intersection point line be x-axis positive direction, be perpendicular to described x/y plane from pressure face point to suction surface direction for z-axis direction；In FIG, x-axis direction be level to the right, y-axis direction is vertically up, z-axis direction be perpendicular to paper point to reader (x, y, z is not shown)。
For the characteristic cross-section being numbered 1, subordinate list 1 is explained further as follows: with H%=0.7, r=38.18mm determine when intercepting blade with the face of cylinder of fan axis coaxle (that is, the first above-mentioned face of cylinder), blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=0 °, α2=178 °, β=33.2 °, b=84.7mm, P1x=48.919mm, P1y=15.919mm, P1z=-10.865mm, P2x=26.459mm, P2y=-44.119mm, P2z=20.478mm, can uniquely determine this characteristic cross-section according to these parameters above-mentioned。The parameter of the characteristic cross-section of other numbering similarly, repeats no more。
It may be noted that shown in subordinate list 1 be only the value having choosing most, it practice, each parameter value allows for error, the error of H% is in ± 1% in the present invention；α1, α2, the error of β is in ± 1 °；R, b, P1x, P1y, P1z, P2x, P2y, P2zError is in ± 1mm。
Although it addition, be capable of determining that 11 characteristic cross-sections of blade according to the parameter of subordinate list 1, but, the blade of the present invention is can be obtained by according to characteristic cross-section 1, characteristic cross-section 6, characteristic cross-section 11；In order to optimize further by blade, it is possible to increase characteristic cross-section 2, characteristic cross-section 7 has 5 characteristic cross-sections altogether and determines the blade of the present invention；For further optimization, it is possible to be further added by characteristic cross-section 3, characteristic cross-section 87 characteristic cross-sections altogether to determine the blade of the present invention；Can also continue to increase characteristic cross-section 4,9 characteristic cross-sections are to determine the blade of the present invention altogether for characteristic cross-section 9, with further optimization；It is further continued for, it is possible to be further added by characteristic cross-section 5, characteristic cross-section 10 totally 11 characteristic cross-sections to determine the blade of the present invention。Except the characteristic cross-section of blade, between the adjacent each two characteristic cross-section of blade, part is continuous and derivable transition。
Fig. 8 is the pressure-plotting of characteristic cross-section 4 in subordinate list 1, Fig. 9 is the pressure-plotting of characteristic cross-section 9 in subordinate list 1, the two pressure-plotting obtains from by CFD numerical analysis techniques, can be seen that from the two pressure-plotting, pressure law near leaf characteristic cross section, it is seen that optimize the aerofoil fan after design and there is excellent aerodynamic characteristic。Being formed it is further preferred that blade is injection molding process, material is for strengthening PP (polypropylene)。
It should be understood that even if r=38.18mm is the numerical value obtained after blade bi-directional scaling, as long as meeting the relevant parameter of the relevant characteristic cross-section of the present invention, this blade falls within the design of the present invention。
On the other hand, the present invention also provides for a kind of axial flow fan for air conditioner, and all blades of fan are the blade of the present invention。
Compare below by way of experimental data, describe the technique effect of the present invention in detail。
For axial flow fan for air conditioner, with model be 35W400123 fan 1 (prior art) and fan 2 (there is the fan of blade of the present invention) compare, so that beneficial effects of the present invention to be described。Being done experiment is carry out when constant at fan 1 and the test voltage of fan 2, power, includes 5 groups of experimental datas altogether:
(1) first group of experimental data: the fan of above-mentioned model elected as by fan 1, fan 2 is the fan with three blades, and wherein, each blade is the blade determined by 11 characteristic cross-sections of subordinate list 1:
2: the first groups of experimental data contrasts of subordinate list
(2) second groups of experimental datas: the fan of above-mentioned model elected as by fan 1, fan 2 is the fan with three blades, and wherein, each blade is the blade determined by the characteristic cross-section 1 of subordinate list 1, characteristic cross-section 6, characteristic cross-section 11:
3: the second groups of experimental data contrasts of subordinate list
(3) the 3rd groups of experimental datas: the fan of above-mentioned model elected as by fan 1, fan 2 is the fan with three blades, wherein, each blade is the blade determined by the characteristic cross-section 1 of subordinate list 1, characteristic cross-section 2, characteristic cross-section 6, characteristic cross-section 7, characteristic cross-section 11:
4: the three groups of experimental data contrasts of subordinate list
(4) the 4th groups of experimental datas: the fan of above-mentioned model elected as by fan 1, fan 2 is the fan with three blades, wherein, each blade is the blade determined by the characteristic cross-section 1 of subordinate list 1, characteristic cross-section 2, characteristic cross-section 3, characteristic cross-section 6, characteristic cross-section 7, characteristic cross-section 8, characteristic cross-section 11:
5: the four groups of experimental data contrasts of subordinate list
(5) the 5th groups of experimental datas: the fan of above-mentioned model elected as by fan 1, fan 2 is the fan with three blades, wherein, each blade is the blade determined by the characteristic cross-section 1 of subordinate list 1, characteristic cross-section 2, characteristic cross-section 3, characteristic cross-section 4, characteristic cross-section 6, characteristic cross-section 7, characteristic cross-section 8, characteristic cross-section 9, characteristic cross-section 11:
6: the five groups of experimental data contrasts of subordinate list
Contrast according to five set experimental data, it can be deduced that the axial flow fan for air conditioner air quantity with blade of the present invention is big, noise is low。
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations。All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention。
Claims (10)
1. a blade for axial flow fan for air conditioner, is coincided by multiple characteristic cross-sections and forms, and the profile molded line of described characteristic cross-section is the closed curve surrounded by inner arc curve and back of the body curved line, it is characterised in that:
When intercepting described blade on first face of cylinder with fan axis coaxle determined with H%=0.7, r=38.18mm, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=0 °, α2=178 °, β=33.2 °, b=84.7mm, P1x=48.919mm, P1y=15.919mm, P1z=-10.865mm, P2x=26.459mm, P2y=-44.119mm, P2z=20.478mm；
When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.3, r=38.18mm, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=29 °, α2=144 °, β=28.4 °, b=177.9mm, P1x=71.443mm, P1y=102.571mm, P1z=-46.663mm, P2x=115.616mm, P2y=-47.518mm, P2z=37.948mm；
When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.19, r=38.18mm, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=55 °, α2=134 °, β=24.9 °, b=272.3mm, P1x=57.071mm, P1y=184.243mm, P1z=-85.508mm, P2x=199.547mm, P2y=-19.016mm, P2z=28.289mm；
Relevant parameter definition is as follows:
The ratio of H% r and R；
The wheel hub inscribed cylinder radius surface of r fan；
The radius on the different faces of cylinder that R is concentric from described wheel hub inscribed circle cylinder is R；
L1The line of the arcuate midway point of the leaf cross-section that the different faces of cylinder that radius be R concentric from described wheel hub inscribed circle cylinder intercept；
L2The line of rotary middle point (O) when the blade root mid-chord (Q) of blade and fan work；
L3The line of rotary middle point when described arcuate midway point and described fan work；
α1—L2With L3Between angle；
L4The face of cylinder point of intersection that the leading edge of fan is corresponding with R, along described leading edge curve near tangent；
L5Pass through L4The line of point of contact P and described rotary middle point；
α2—L4With L5Between angle；
Datum plane vertical from the axis of fan for β and the angle of the string of a musical instrument of the leaf cross-section intercepted by the different faces of cylinder that the radius concentric with the wheel hub face of cylinder is R, be called blade angle；
P1、P2Referring to that radius is the intersection point that molded line blade trailing edge and leading edge are intersected in the R difference face of cylinder with the pressure face of blade, coordinate representation is P1(P1x, P1y, P1z), P2(P2x, P2y, P2z)；
B radius is the face of cylinder and the line of blade inlet edge and trailing edge intersection point of R, is called aerofoil profile chord length；
X/y plane, z-axis are with the blade root side motor axis hole central point of blade for initial point, with through described initial point and be perpendicular to the plane of fan axis for x/y plane, with initial point and described first face of cylinder and trailing edge line intersection point line for x-axis positive direction, point to the direction of suction surface for z-axis direction from described pressure face being perpendicular to described x/y plane。
2. the blade of axial flow fan for air conditioner according to claim 1, it is characterised in that
When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.6, r=38.18mm, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=6 °, α2=172 °, β=32.6 °, b=111.6mm, P1x=53.557mm, P1y=36.832mm, P1z=-22.523mm, P2x=30.425mm, P2y=-57.439mm, P2z=32.593mm；
When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.27, r=38.18mm, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=34 °, α2=142 °, β=27.5 °, b=199.4mm, P1x=69.824mm, P1y=121.345mm, P1z=-54.265mm, P2x=132.953mm, P2y=-43.859mm, P2z=37.935mm。
3. the blade of axial flow fan for air conditioner according to claim 2, it is characterised in that
When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.5, r=38.18mm, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=13 °, α2=152 °, β=31.1 °, b=130.9mm, P1x=61.880mm, P1y=50.703mm, P1z=-28.457mm, P2x=51.763mm, P2y=-60.997mm, P2z=39.219mm；
When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.25, r=38.18mm, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=39 °, α2=136 °, β=26.7 °, b=223.5mm, P1x=65.325mm, P1y=140.562mm, P1z=-62.941mm, P2x=149.661mm, P2y=-40.330mm, P2z=37.618mm。
4. the blade of axial flow fan for air conditioner according to claim 3, it is characterised in that
When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.4, r=38.18mm, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=19 °, α2=150 °, β=30.5 °, b=142.9mm, P1x=67.242mm, P1y=67.108mm, P1z=-34.190mm, P2x=76.975mm, P2y=-55.677mm, P2z=38.305mm；
When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.22, r=38.18mm, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=44 °, α2=132 °, β=26.1 °, b=249.7mm, P1x=58.171mm, P1y=159.738mm, P1z=-72.537mm, P2x=165.948mm, P2y=-36.897mm, P2z=37.289mm。
5. the blade of axial flow fan for air conditioner according to claim 4, it is characterised in that
When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.35, r=38.18mm, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=24 °, α2=147 °, β=29.4 °, time, b=158.9mm, P1x=70.498mm, P1y=84.439mm, P1z=-40.077mm, P2x=97.257mm, P2y=-51.391mm, P2z=38.015mm；
When intercepting described blade on the face of cylinder with fan axis coaxle determined with H%=0.20, r=38.18mm, described blade has the characteristic cross-section of satisfied following Parameter Conditions: α1=49 °, α2=137 °, β=25.6 °, b=275.4mm, P1x=49.684mm, P1y=177.165mm, P1z=-82.016mm, P2x=180.880mm, P2y=-33.739mm, P2z=36.888mm。
6. the blade of the axial flow fan for air conditioner according to any one of claim 1-5, it is characterised in that be continuous and derivable transition between adjacent each two characteristic cross-section。
7. the blade of the axial flow fan for air conditioner according to any one of claim 1-5, it is characterised in that the error of described H% is in ± 1%；Described α1, α2, the error of β is in ± 1 °；Described r, b, P1x, P1y, P1z, P2x, P2y, P2zError in ± 1mm。
8. the blade of the axial flow fan for air conditioner according to any one of claim 1-5, it is characterised in that described blade is made by Shooting Technique, material is RPP。
9. the blade of axial flow fan for air conditioner according to claim 6, it is characterised in that described blade is made by Shooting Technique, material is RPP。
10. an axial flow fan for air conditioner, it is characterised in that all blades of described fan are blade described in aforementioned any claim。
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| CN201110081788.XA CN102213235B (en) | 2011-04-01 | 2011-04-01 | The blade of axial flow fan for air conditioner, axial flow fan for air conditioner |
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| CN102213235B true CN102213235B (en) | 2016-06-22 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720700B (en) * | 2012-06-21 | 2015-11-25 | 海尔集团公司 | The blade of axial fan and axial flow fan for air conditioner |
| CN103925234B (en) * | 2014-04-10 | 2016-05-25 | 江苏大学 | A kind of wear-resistant axial-flow pump impeller method for designing |
| 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 |
| WO2020103400A1 (en) * | 2018-11-22 | 2020-05-28 | 广东美的制冷设备有限公司 | Axial-flow wind wheel and air-conditioner with same |
| CN109505788B (en) * | 2018-12-25 | 2021-01-29 | 哈尔滨工业大学 | Reversible axial flow fan |
| CN111677693B (en) * | 2020-05-21 | 2021-10-08 | 同济大学 | High-pressure cooling fan for large-flow low-noise fuel cell automobile |
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|---|---|---|---|---|
| US4684324A (en) * | 1985-08-02 | 1987-08-04 | Gate S.P.A. | Axial fan, particularly for motor vehicles |
| CN201281041Y (en) * | 2008-10-20 | 2009-07-29 | 美的集团有限公司 | Fan blade |
| CN201771860U (en) * | 2010-09-12 | 2011-03-23 | 美的集团有限公司 | Fan blade |
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| US4569631A (en) * | 1984-08-06 | 1986-02-11 | Airflow Research And Manufacturing Corp. | High strength fan |
| JP2730344B2 (en) * | 1991-09-19 | 1998-03-25 | 三菱電機株式会社 | Blower impeller |
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| US4684324A (en) * | 1985-08-02 | 1987-08-04 | Gate S.P.A. | Axial fan, particularly for motor vehicles |
| CN201281041Y (en) * | 2008-10-20 | 2009-07-29 | 美的集团有限公司 | Fan blade |
| CN201771860U (en) * | 2010-09-12 | 2011-03-23 | 美的集团有限公司 | Fan blade |
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