CN110513329A - Axial-flow windwheel and air conditioner with it - Google Patents
Axial-flow windwheel and air conditioner with it Download PDFInfo
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- CN110513329A CN110513329A CN201910941873.5A CN201910941873A CN110513329A CN 110513329 A CN110513329 A CN 110513329A CN 201910941873 A CN201910941873 A CN 201910941873A CN 110513329 A CN110513329 A CN 110513329A
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- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- 238000010943 off-gassing Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 238000012545 processing Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
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- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000011835 investigation Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
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Classifications
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- 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
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- 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
- F04D29/384—Blades characterised by form
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- 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
- F04D29/388—Blades characterised by construction
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- 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
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Abstract
The invention discloses a kind of axial-flow windwheel and with its air conditioner.Axial-flow windwheel hub radius is R1, and axial-flow windwheel maximum outer radius is R2, blade radial leaf a height of Rm, Rm=R2-R1；Centered on wind wheel axis, make the first to the 5th circle by radius of R1+90%Rm, R1+5%Rm, R1+50%Rm, R1+70%Rm, R1+30%Rm respectively, this five round intersection point with blade inlet edge is respectively point A1, point A3, point A5, point A7 and point A9.The line of point A1 and point A3 are the first line, point A5, point A7, point A9 to the first line distance be respectively h1, h2, h3, h1 > h2, h1 > h3, and h1=(0.09~0.13) R2, h2=(0.06~0.10) R2, h3=(0.06~0.10) R2.The air quantity of axial-flow windwheel can be improved in axial-flow windwheel according to the present invention.
Description
Technical field
The present invention relates to field of wind wheel, more particularly, to a kind of axial-flow windwheel and with its air conditioner.
Background technique
Currently, need to seek to further increase the ability efficiency of air conditioner for increasingly harsh energy-saving and emission-reduction requirement, and
Improve the ability efficiency most critical point of air conditioner, in that improve the heat exchange efficiency of air conditioner, i.e., it is how not increased in noise
Under the premise of, the air quantity of air conditioner is improved, to seek to reduce compressor horsepower, and improves the heat dissipation capacity of air conditioner.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of axis
Wind wheel is flowed, to improve the air quantity of axial-flow windwheel.
The present invention, which also aims to, proposes a kind of air conditioner with above-mentioned axial-flow windwheel, to improve the air quantity of air conditioner.
Axial-flow windwheel according to an embodiment of the present invention, including wheel hub and multiple blades, the multiple spacing with blades are located at institute
State on wheel hub, each blade includes leading edge, trailing edge, Ye Ding, pressure face and suction surface, the leading edge of the blade upstream into
Gas direction is in arc shaped sweepforward；The hub radius is R1, and the maximum outer radius of the axial-flow windwheel is R2, the diameter of the blade
To a height of Rm of leaf, Rm=R2-R1；Centered on the center of rotation axis of the axial-flow windwheel, make the by radius of R1+90%Rm
One circle, the described first round and up-front intersection point are the first intersection point A1, and the described first round intersection point with the trailing edge is second
Intersection point A2；Make the second circle using R1+5%Rm as radius, described second it is round with the up-front intersection point be third intersection point A3, described the
The two round intersection points with the trailing edge are the 4th intersection point A4；Make third circle by radius of R1+50%Rm, before the third is round and described
The intersection point of edge is the 5th intersection point A5, and the round intersection point with the trailing edge of the third is the 6th intersection point A6；Using R1+70%Rm as radius
Make the 4th circle, the 4th circle is the 7th intersection point A7 with the up-front intersection point, and the described 4th round and trailing edge intersection point is
8th intersection point A8；Make the 5th circle by radius of R1+30%Rm, the 5th circle and the up-front intersection point are the 9th intersection point A9,
The described 5th round intersection point with the trailing edge is the tenth intersection point A10；The line of the first intersection point A1 and the third intersection point A3
Distance for the first line L1, the 5th intersection point A5 to the first line L1 is h1, the 7th intersection point A7 to described
The distance of one line L1 is h2, and the distance of the 9th intersection point A9 to the first line L1 is h3, wherein h1 > h2, h1 > h3,
And h1=(0.09~0.13) R2, h2=(0.06~0.10) R2, h3=(0.06~0.10) R2.
Axial-flow windwheel according to an embodiment of the present invention, by limiting up-front shape, so that leading edge is in arc-shaped towards upstream
Airintake direction sweepforward can reduce blade to inlet flow field so that blade can form C-shaped static pressure distribution in tip surface region
The response of distortion reduces noise, reduces eddy loss, so that blade has biggish flow nargin, and then improves axial-flow windwheel
Air quantity.
In some embodiments, on air-flow direction, at least part of the trailing edge of the blade is under
Swim outgassing direction protrusion.
Specifically, the line of the second intersection point A2 and the 4th intersection point A4 is the second line L2, and the 6th intersection point A6 is arrived
The distance of the second line L2 is W1, and the distance of the tenth intersection point A10 to the second line L2 is W2, and the described 8th hands over
The distance of point A8 to the second line L2 is W3, wherein W1 > W2 > W3, have W1=(0.08~0.12) R2, W2=(0.06~
0.09) R2, W3=(0.03~0.06) R2.
In some embodiments, the line of the rotation center o of the first intersection point A1 and the axial-flow windwheel is third company
The line of line L3, the second intersection point A2 and the rotation center o are the 4th line L4, the third line L3 and the described 4th
Angle between line L4 is defined as the first angle Ω 1, and the range of Ω 1 is 85 °~105 °；The third intersection point A3 and the rotation
It is the 6th line L6, institute that the line for turning center o, which is the line of the 5th line L5, the 4th intersection point A4 and the rotation center o,
It states the angle between the 5th line L5 and the 6th line L6 and is defined as the second angle Ω 2, the range of Ω 2 is 70 °~90 °,
And 1 > Ω of Ω 2.
In some embodiments, the frontal projected area of each blade in the horizontal plane be S1, the wheel hub with it is described
Annulus area between blade maximum outside diameter is S2, wherein S1/S2=0.23~0.26.
In some embodiments, the leaf top is bent from the pressure towards the suction surface.
Specifically, the leaf top is T towards the curved height of the suction surface from the pressure, wherein T=(0.02-
0.04)R2。
In some embodiments, the circular arc line between the first intersection point A1 and the second intersection point A2 is defined as the 7th company
Line L7, the plane by the rotation center o and the 7th line L7 of the axial-flow windwheel are vertical plane, and the vertical plane is to institute
State blade section be longitudinal section, from the leaf top to the direction of the rotation center o on, the longitudinal section is in the suction surface
On boundary line include sequence connected first segment curve q1, second segment curve q2 and third section curve q3, the first segment is bent
Line q1 extends towards the rotation center from top to bottom, and the second segment curve q2 prolongs towards the rotation center from bottom to top
It stretches, the third section curve q3 extends towards the rotation center from top to bottom；From the leaf top to the side of the rotation center o
Upwards, boundary line of the longitudinal section on the pressure face includes connected the 4th section of curve q4, the 5th section of curve q5 of sequence
Extend from top to bottom towards the rotation center with the 6th section of curve q6, the 4th section of curve q4, the 5th section of curve q5
Extend from bottom to top towards the rotation center, the 6th section of curve q6 extends towards the rotation center from top to bottom.
Specifically, the first segment curve q1 and the second segment curve q2 intersection minimum point be K point, the K point with
Radial distance between the rotation center o is Rk, wherein Rk=R1+ (0.85-0.95) Rm.
Further, the longitudinal section is three, and four on the 7th line L7 are passed through in three longitudinal sections respectively
Along ent A11, A12, A13, from the leading edge to the direction of the trailing edge on, three longitudinal sections are respectively f1, f2, f3；
The highest point of 5th section of curve q5 and the 6th section of curve q6 intersection is G point, and the vertical range between the G point and K point is
The V value of V, longitudinal section f1 are V1, and the V value of longitudinal section f2 is V2, and the V value of longitudinal section f3 is V3, wherein V1 < V2 < V3.
Air conditioner according to an embodiment of the present invention, including axial-flow windwheel described in the above embodiment of the present invention.
Air conditioner according to an embodiment of the present invention, by limiting the up-front shape of axial-flow windwheel, so that leading edge is in circular arc
Shape is towards upstream airintake direction sweepforward, it is possible to reduce eddy loss, so that blade has biggish flow nargin, so as to be promoted
The air quantity of air conditioner reduces compressor horsepower, reduces the noise of air conditioner, improve the heat dissipation capacity of air conditioner.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the perspective view of Axial-Flow of embodiment of the present invention wind wheel (wherein, blade tip and suction are face-up)；
Fig. 2 is perspective view of Axial-Flow of the embodiment of the present invention wind wheel at another visual angle (wherein, blade tip and suction are face-up)；
Fig. 3 is the perspective view of Axial-Flow of embodiment of the present invention wind wheel (wherein, downward, pressure is face-up for blade tip)；
Fig. 4 is that the schematic diagram that the part-structure of Axial-Flow of embodiment of the present invention wind wheel is made to project in the horizontal plane (wherein, is inhaled
Power is face-up)；
Fig. 5 is that Axial-Flow of embodiment of the present invention wind wheel makees the schematic diagram projected in the horizontal plane (wherein, pressure is face-up)；
Fig. 6 is that Axial-Flow of embodiment of the present invention wind wheel makees the schematic diagram projected in the horizontal plane (wherein, suction is face-up)；
Fig. 7 is that Axial-Flow of embodiment of the present invention wind wheel makees the schematic diagram projected in vertical plane；
Fig. 8 is that the part-structure of Axial-Flow of embodiment of the present invention wind wheel makees schematic diagram (wherein, the tail projected in the horizontal plane
Edge is protruded towards downstream outgassing direction)；
Fig. 9 is that the part-structure of Axial-Flow of embodiment of the present invention wind wheel makees schematic diagram (wherein, the leaf projected in the horizontal plane
First angle is greater than the second angle)；
Figure 10 is (wherein, the part-structure of Axial-Flow of embodiment of the present invention wind wheel makees the schematic diagram projected in the horizontal plane
Annulus area of the dash area between wheel hub and blade maximum outside diameter)
Figure 11 is the schematic diagram of a longitudinal section of Axial-Flow of embodiment of the present invention wind wheel；
Figure 12 is (wherein, the part-structure of Axial-Flow of embodiment of the present invention wind wheel makees the schematic diagram projected in the horizontal plane
A11, A12, A13 are the quartering point on the 7th line L7)；
Figure 13 is the schematic diagram of three longitudinal sections made by f1, f2, f3 of axial-flow windwheel shown in Figure 12；
Appended drawing reference:
Axial-flow windwheel 100,
Wheel hub 1, leading edge 2, trailing edge 3, leaf top 4, pressure face 5, suction surface 6.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " on ", "lower", "inner", "outside", " radial direction ", " circumferential direction ",
"center", " longitudinal direction ", " transverse direction ", "vertical", "horizontal", etc. instructions orientation or positional relationship be orientation based on the figure
Or positional relationship, it is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning
It must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.In addition,
Define " first ", the feature of " second " can explicitly or implicitly include one or more of the features.In the present invention
Description in, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Axial-flow windwheel 100 according to an embodiment of the present invention is described below with reference to Fig. 1-Figure 13.
Axial-flow windwheel 100 according to an embodiment of the present invention, as shown in Figure 1-Figure 3, including wheel hub 1 and multiple blades, it is multiple
Spacing with blades is located on wheel hub 1, and each blade includes leading edge 2, trailing edge 3, leaf top 4, pressure face 5 and suction surface 6, the leading edge of blade
2 upstream airintake direction be in arc shaped sweepforward.What needs to be explained here is that air-flow is from leading edge stream when axial-flow windwheel 100 works
Enter, is flowed out from rear.The leaf position that i.e. air-flow contacts first is leading edge 2, and the position that air-flow finally flows out blade is trailing edge 3,
Airintake direction refers to the direction of flow of air-flow, and outgassing direction refers to the outflow direction of air-flow.Leaf top 4 refer to blade radially, leaf
Frontier district of the piece far from wheel hub 1.Pressure face 5 is one side and pressure higher one side of the blade towards outgassing direction.Suction surface
6 be one side and pressure lower one side of the blade towards airintake direction.Using face where blade as the plane of reference, blade towards into
The region in gas direction be upstream, blade towards the region of air-flow outgassing direction be upstream.
As shown in figure 4,1 radius of wheel hub is R1, the maximum outer radius of axial-flow windwheel 100 is R2, and the radial leaf of blade is a height of
Rm, Rm=R2-R1.As shown in Figure 5 and Figure 6, when wheel hub 1 is cylindric, R1 is cylindrical radius.When wheel hub 1 is not equal diameter
Or radius it is cylindric when, such as wheel hub 1 is coniform (not shown go out), i.e. the one of wheel hub 1 is big, and head hour takes wheel hub 1
Mean radius is as R1.The maximum outer radius of axial-flow windwheel 100 is R2, is the maximum excircle radius of blade.For certain spies
The size of hydrosphere is not investigated when blade outer ring is also added with hydrosphere in different application, takes the maximum excircle half of blade
Diameter.
As shown in figure 4, making the first circle by radius of R1+90%Rm centered on the center of rotation axis of axial-flow windwheel 100
A, the first circle a and the intersection point of leading edge 2 are the first intersection point A1, the first circle a and the intersection point of trailing edge 3 is the second intersection point A2；With R1+5%
Rm is third intersection point A3 for the intersection point of radius work second round b, the second circle b and leading edge 2, and the intersection point of the second round b and trailing edge 3 are the 4th
Intersection point A4；Using R1+50%Rm as radius make third circle c, third circle c and leading edge 2 intersection point be the 5th intersection point A5, third circle c with
The intersection point of trailing edge 3 is the 6th intersection point A6；It is the 7th using the intersection point that R1+70%Rm makees the 4th circle d, the 4th circle d and leading edge 2 as radius
The intersection point of intersection point A7, the 4th circle d and trailing edge 3 is the 8th intersection point A8；Using R1+30%Rm as radius make the 5th circle e, the 5th circle e with
The intersection point of leading edge 2 is the 9th intersection point A9, and the intersection point of the 5th round e and trailing edge 3 are the tenth intersection point A10；First intersection point A1 and third are handed over
The distance that the line of point A3 is the first line L1, the 5th intersection point A5 to the first line L1 is h1, the 7th intersection point A7 to the first line
The distance of L1 is h2, and the distance of the 9th intersection point A9 to the first line L1 is h3, wherein h1 > h2, h1 > h3, and h1=(0.09~
0.13) R2, h2=(0.06~0.10) R2, h3=(0.06~0.10) R2.
That is blade on the projection view of horizontal plane, as shown in fig. 7, leading edge 2 in arc-shaped towards upstream airintake direction sweepforward,
That is, as shown in figure 4, being located at the high region between 90%Rm radial direction leaf height of 5%Rm radial direction leaf, 2 shape of leading edge of blade
Shape can be glossily fitted with one section of circular curve, and the unilateral fluctuating error of arc with fitting is being less than within 3mm.
Here, selection R1+90%Rm is that radius makees the first circle a, rather than chooses R1+Rm work circle and intersect as with leading edge 2
The first intersection point A1, and the second intersection point A2 for intersecting with trailing edge 3 is as the point investigated, and is to protect close to 4 region of leaf top
Leading edge 2, the safety of trailing edge 3, reduce blade tip or situations such as falling damage of 3 top area of trailing edge.Specifically, close to leaf
Chamfering or fillet etc. can be equipped at the leading edge 2 of piece top area, trailing edge 3.Such as the region other than 90%Rm, it can be along
The curve of leading edge 2 or trailing edge 3 continues to extend outwardly, and intersects with leaf top 4, front and back intersection point chamfered, thus reduce blade tip or
3 top area acuity of trailing edge, improves the rigidity of blade.It should be noted that blade tip refers to leading edge 2 adjacent to the area on leaf top 4
Domain.
On the other hand, choosing R1+5%Rm is that radius makees the second circle b, rather than directly chooses the wheel hub 1 that radius is R1 and make
Circle is as the third intersection point A3 intersected with blade inlet edge 2, and the 4th intersection point A4 intersected with blade trailing edge 3 is as investigation
Point is because corresponding radius is small, and linear velocity is low, and blade is corresponding in radial base region of the leaf height less than 5%Rm
Acting ability is weak, and flowing is small to the air quantity of wind wheel entirety, noise effect, therefore, the region other than high spot reviews 5%Rm.This
Sample can according to need in the position that blade root connect with wheel hub 1 and carry out reinforcement design, Rouno Cormer Pregrinding Wheel design etc. to improve 1st area of wheel hub
The blade strength in domain.In another example when base region is thicker duplicate removal processing can be carried out in the position that blade is connect with wheel hub 1
To mitigate the weight of axial-flow windwheel 100.It should be noted that blade root refers to the region of blade adjacent hub 1.
It is understood that axial-flow windwheel mostly uses straight blade in the related technology, and in blade rotation, neighbouring leaf top
Linear velocity at region is big, vortex easy to form at blade tip, to generate vortex loss, and noise is big.In the embodiment of the present invention,
For the leading edge 2 of blade in arc-shaped towards upstream airintake direction sweepforward, blade can form C-shaped static pressure distribution in tip surface region,
The response that blade distorts to inlet flow field is reduced, noise is reduced, reduces eddy loss, so that blade has biggish flow abundant
Degree, to improve the air quantity of axial-flow windwheel 100.
Axial-flow windwheel 100 according to an embodiment of the present invention, by limiting the shape of leading edge 2, so that leading edge 2 is in arc-shaped court
The sweepforward of upstream inlet direction can reduce blade to import so that blade can form C-shaped static pressure distribution in tip surface region
The response of flow distortion reduces noise, reduces eddy loss, so that blade has biggish flow nargin, and then improves axis stream
The air quantity of wind wheel 100.
In one particular embodiment of the present invention, 2 shape of leading edge can use circular-arc-shaped design completely.Preferably, preceding
The radius of 2 circular arc of edge uses 0.63R2, h1=0.10R2, h2=0.08R2, h3=0.08R2, special with excellent aerodynamic noise
Property.
In some embodiments, as shown in fig. 7, on air-flow direction, at least part direction of the trailing edge 3 of blade
Downstream outgassing direction protrusion.Blade area can be increased towards the ingehious design of downstream protrusion by trailing edge 3 in this way, improve blade
Acting ability, to improve the air quantity of axial-flow windwheel 100.
Specifically, as shown in figure 8, the line of the second intersection point A2 and the 4th intersection point A4 is the second line L2, the 6th intersection point A6
Distance to the second line L2 is W1, and the distance of the tenth intersection point A10 to the second line L2 is W2, the 8th intersection point A8 to the second line
The distance of L2 is W3, wherein W1 > W2 > W3, have W1=(0.08~0.12) R2, W2=(0.06~0.09) R2, W3=(0.03~
0.06)R2.It should be noted that above-described intersection point, line and distance value each mean blade blade tip upward, level is put
When setting in the horizontal plane, corresponding intersection point, line and distance value on the projection view of blade in the horizontal plane.Wherein, the above institute
The distance for stating intersection point to connection each means intersection point to the vertical range of line.
It is understood that by limiting W1 > W2 > W3, W1=(0.08~0.12) R2, W2=(0.06~0.09) R2,
W3=(0.03~0.06) R2, so as to swim outgassing direction protrusion downward more for the central region of blade radial, in close blade root and leaf
It pushes up at 4 both ends, trailing edge 3 is few towards downstream protrusion.Meanwhile the projection amount in the high region of 30%Rm radial direction leaf is greater than 70%Rm radial direction leaf height
The projection amount in region.In this way by the projection amount of control blade different zones, blade surface Secondary Flow can be improved, promote axis stream
The air quantity of wind wheel 100 weakens the influence of blade wake passing, reduces noise and Trailing Edge Loss.
In some specific embodiments, W1=0.10R2, W2=0.073R2, W3=0.047R2, such axial-flow windwheel
100 have lower blade wake passing, excellent low noise characteristic and Wind Volume, less eddy loss.
In some embodiments, as shown in figure 9, the line of the rotation center o of the first intersection point A1 and axial-flow windwheel 100 is the
The line of three line L3, the second intersection point A2 and rotation center o is the 4th line L4, between third line L3 and the 4th line L4
Angle is defined as the first angle Ω 1, and the range of Ω 1 is 85 °~105 °.The line of third intersection point A3 and rotation center o is the 5th
The line of line L5, the 4th intersection point A4 and rotation center o are the 6th line L6, the folder between the 5th line L5 and the 6th line L6
Angle is defined as the second angle Ω 2, and the range of Ω 2 is 70 °~90 °, and 1 > Ω of Ω 2.It is understood that by limiting the first folder
Range between angle and the second angle can promote the inner flowing characteristic of axial-flow windwheel 100.Specifically, the model of the first angle Ω 1
Enclosing can make the area of blade entirety big for 85 °~105 °, be conducive to the acting ability for promoting blade, before in addition can making
The acuity of edge 2 is moderate, to be conducive to improve the rigidity of blade, processing easy to produce, and reduces mutual between blade
Interference.The range of second angle Ω 2, which is 70 °~90 °, can make the blade area positioned at base region moderate, be conducive to be promoted
Rigidity at blade root improves the connective stability of blade and wheel hub 1, promotes the job security of axial-flow windwheel 100.
In one particular embodiment of the present invention, Ω 1 takes 93 °, and Ω 2 takes 81 °, and axial-flow windwheel 100 has in preferable
Properties of flow.
In some embodiments, as shown in Figure 10, the frontal projected area of each blade in the horizontal plane be S1, wheel hub 1 with
Annulus area between blade maximum outside diameter is S2, wherein S1/S2=0.23~0.26.Here the projection of blade in the horizontal plane
Area, be blade blade tip upward, when laying flat in the horizontal plane, the projected area of blade in the horizontal plane is not blade in sky
Between on area.In actual operation, blade has certain setting angle, and the projected area S1 of blade in the horizontal plane is less than
The real area of blade, furthermore projected area S1 here, does not include the area in 1 region of blade wheel hub.Here wheel hub 1 and leaf
Annulus area S2 between piece maximum outside diameter R2 is that area shared in the region maximum outside diameter R2 of blade subtracts 1st area of center hub
Area shared by domain, i.e. S2=3.14* (R2*R2-R1*R1).
It is understood that the projected area S1 of blade in the horizontal plane accounts for the ring between wheel hub 1 and blade maximum outside diameter
The 23% to 26% of shape area S2, such single blade is larger, and the acting ability of blade can be improved, and reduces 4 gap of leaf top
Leakage improves the air quantity of axial-flow windwheel 100, improves stability when blade rotation, reduces noise.
In one particular embodiment of the present invention, S1/S2 can be 0.243, and axial-flow windwheel 100 has lower noise
With higher airflow value.
In some embodiments, as seen in figs. 7 and 11, leaf top 4 is bent from pressure face 5 to suction surface 6.It can change in this way
The airflow state in kind 4 region of leaf top, reduces the gap loss in 4 region of leaf top, improves air quantity, reduces noise.
Specifically, which is characterized in that leaf top 4 is T from pressure face 5 to the curved height of suction surface 6, wherein T=(0.02-
0.04)R2.In this way by limiting leaf top 4 from pressure face 5 to the curved height of suction surface 6, so as to improve air-flow at leaf top 4
Throughput, reduce blocking of 4 knee of leaf top to air-flow, can also further promote the air flow method in 4 region of leaf top, reduce
The gap loss in 4 region of leaf top.
In some embodiments, as is illustrated by figs. 11 and 12, the circular arc line between the first intersection point A1 and the second intersection point A2 is fixed
Justice is the 7th line L7, and the plane by the rotation center o and the 7th line L7 of axial-flow windwheel 100 is vertical plane, indulges plane pair
The section of blade is longitudinal section, and on Cong Yeding 4 to the direction of rotation center o, boundary line of the longitudinal section on suction surface 6 includes suitable
Sequence connected first segment curve q1, second segment curve q2 and third section curve q3, first segment curve q1 are from top to bottom towards rotation
Center extends, and second segment curve q2 extends towards rotation center from bottom to top, and third section curve q3 is from top to bottom towards in rotating
The heart extends；On from leaf top 4 to the direction of rotation center o, boundary line of the longitudinal section on pressure face 5 includes the 4th that sequence is connected
Section curve q4, the 5th section of curve q5 and the 6th section of curve q6, the 4th section of curve q4 extend towards rotation center from top to bottom, and the 5th
Section curve q5 extends towards rotation center from bottom to top, and the 6th section of curve q6 extends towards rotation center from top to bottom.Such
One section of curve q, the 4th section of curve q4 can effectively reduce the leakage in 4 gap of leaf top, while each curved section can improve blade
Surface second stream reorganizes the flowing of blade surface gas, effectively improves the air quantity of axial-flow windwheel 100, while can reduce axis
The loss of wind wheel 100 is flowed, the noise of axial-flow windwheel 100 is reduced, promotes aeroperformance.
Specifically, the minimum point of first segment curve q1 and second segment curve q2 intersection is K point, between K point and rotation center o
Radial distance be Rk, wherein Rk=R1+ (0.85-0.95) Rm.In some other embodiments, for the ease of production system
It makes, it is small to form one to carry out detail sanding in the region that the first segment curve q1 of pressure face 5 intersects with second segment curve q2
The straight line of Duan Pingzhi, the extreme lower position of intersecting area is not a point at this time, takes the radius of corresponding extreme lower position line segment at this time most
Big outermost point is as K point.
Radial position where the point of K in this way is located at the high region of radial leaf of (85%-95%) Rm, so as to preferably
The gap loss in 4 region of leaf top is reduced, air quantity is improved and reduces noise, the mechanical efficiency of impeller is promoted, promotes aerodynamic noise
Characteristic.
Further, longitudinal section is three, and the quartering point A11 on the 7th line L7 is passed through in three longitudinal sections respectively,
A12, A13, from leading edge 2 to the direction of trailing edge 3 on, three longitudinal sections are respectively f1, f2, f3；5th section curve q5 and the 6th section
The highest point of curve q6 intersection is G point, and the vertical range between G point and K point is V, and the V value of longitudinal section f1 is V1, longitudinal section f2
V value be V2, the V value of longitudinal section f3 is V3, wherein V1 < V2 < V3.It should be noted that when local setting reinforcement on suction surface 6
When muscle, the part for inhaling the inside thickeies, and the height and position of G point, does not include the height of the reinforcing rib of localized design at this time.In this way can
The gap loss for preferably reducing 4 region of leaf top improves air quantity and reduces noise, promotes the mechanical efficiency of impeller, pneumatic property
Energy.
It is specifically applied in example at of the invention one, the V1=0.012R2 in the section f1, T1=0.032R2；The V2=in the section f2
0.022R2, T2=0.032R2；V3=0.081R2, the T3=0.028R2 in the section f3, at this time V1 < V2 < V3, and the size of T value
For the 2%-4% of impeller outer radius of a circle size, axial-flow windwheel 100 has excellent aerodynamic noise characteristic.It should be noted that
T1 is leaf top 4 corresponding to the f1 of longitudinal section from pressure face 5 to the curved height of suction surface 6, and T2 is leaf corresponding to the f2 of longitudinal section
From pressure face 5 to the curved height of suction surface 6, T3 is that leaf top 4 corresponding to the f3 of longitudinal section is curved from pressure face 5 to suction surface 6 on top 4
Bent height.Wherein, T corresponds to the maximum value in T1, T2, T3.
In one particular embodiment of the present invention, the position of the K point in the section f1 is located at 0.90Rm, the K point in the section f2
Position be located at 0.88Rm, the position of the K point in the section f3 is located at 0.91Rm, can preferably reduce between 4 region of leaf top
Gap loss improves air quantity and reduces noise, promotes the mechanical efficiency of impeller.
The axial-flow windwheel 100 of the embodiment of the present invention has air quantity big, and low noise is low in energy consumption, and margin of operation is big, condition range
Wide characteristic.Such as axial-flow windwheel 100 of the invention (diameter 535, highly for 170) on air-conditioner outdoor unit in application,
When generating 3700 cubes of ms/h of air quantity, noise can reduce 3-4 decibels by conventional axial-flow windwheel on year-on-year basis, and power of motor reduces
5%.
Axial-flow windwheel 100 in a specific implementation of the invention is described below with reference to Fig. 1-Figure 13.
Wheel hub 1 is located at according to the axial-flow windwheel 100 of the embodiment of the present invention, including wheel hub 1 and multiple blades, multiple spacing with blades
On, each blade includes leading edge 2, trailing edge 3, leaf top 4, pressure face 5 and suction surface 6.
Wherein, 1 radius of wheel hub is R1, and the maximum outer radius of axial-flow windwheel 100 is R2, blade radial leaf a height of Rm, Rm=R2-
R1；Centered on wind wheel axis, it is with R1+90%Rm, R1+5%Rm, R1+50%Rm, R1+70%Rm, R1+30%Rm respectively
Radius makees the first to the 5th circle, this five round intersection point with blade inlet edge 2 is respectively point A1, point A3, point A5, point A7 and point A9.Point
The line of A1 and point A3 are the first line, point A5, point A7, point A9 to the first line distance be respectively h1, h2, h3, h1 > h2,
H1 > h3, and h1=(0.09~0.13) R2, h2=(0.06~0.10) R2, h3=(0.06~0.10) R2.
This five round intersection point with blade trailing edge 3 is respectively point A2, point A4, point A6, point A8 and point A10.Point A2's and point A4
Line is the second line, and the distance of point A6 to the second line is W1, and the distance of point A10 to the second line is W2, point A8 to second
The distance of line is W3, and wherein W1 > W2 > W3, there is W1=(0.08~0.12) R2, W2=(0.06~0.09) R2, W3=(0.03
~0.06) R2.
Point A1, point A2, point A3, point A4 and the line of the rotation center o of axial-flow windwheel 100 are respectively third line, the 4th
Line, the 5th line, the 6th line, the angle between third line L3 and the 4th line L4 are defined as the first angle Ω 1, Ω 1
Range be 85 °~105 °, the angle between the 5th line L5 and the 6th line L6 is defined as the second angle Ω 2, the range of Ω 2
It is 70 °~90 °, and 1 > Ω of Ω 2.The frontal projected area of each blade in the horizontal plane is S1, wheel hub 1 and blade maximum outside diameter it
Between annulus area be S2, wherein S1/S2=0.23~0.26.
Leaf top 4 is T from pressure face 5 to the curved height of suction surface 6, wherein T=(0.02-0.04) R2.
Circular arc line between point A1 and point A2 is defined as the 7th line, by the rotation center o of axial-flow windwheel 100 and the 7th
The plane of line is vertical plane, and indulging plane is longitudinal section to the section of blade, on Cong Yeding 4 to the direction of rotation center o, indulges and cuts
Boundary line of the face on suction surface 6 includes connected first segment curve q1, the second segment curve q2 and third section curve q3 of sequence, the
One section of curve q1 extends towards rotation center from top to bottom, and second segment curve q2 extends towards rotation center from bottom to top, third
Section curve q3 extends towards rotation center from top to bottom；On from leaf top 4 to the direction of rotation center o, longitudinal section is on pressure face 5
Boundary line include connected the 4th section of curve q4, the 5th section of curve q5 and the 6th section of curve q6 of sequence, the 4th section of curve q4 by
On downwardly rotation center extend, the 5th section of curve q5 from bottom to top towards rotation center extend, the 6th section of curve q6 is by upper
Downwardly rotation center extends.First segment curve q1 and second segment curve q2 intersection minimum point be K point, K point and rotation in
Radial distance between heart o is Rk, wherein Rk=R1+ (0.85-0.95) Rm.
The quartering point A11, A12, A13 on the 7th line L7 are passed through in three longitudinal sections respectively, from leading edge 2 to trailing edge 3
On direction, three longitudinal sections are respectively f1, f2, f3；The highest point of 5th section of curve q5 and the 6th section of curve q6 intersection is G point, G
Vertical range between point and K point is V, and the V value of longitudinal section f1 is V1, and the V value of longitudinal section f2 is V2, and the V value of longitudinal section f3 is
V3, wherein V1 < V2 < V3.
Air conditioner according to an embodiment of the present invention, the axial-flow windwheel 100 including the above embodiment of the present invention.
Air conditioner according to an embodiment of the present invention, the shape of the leading edge 2 by limiting axial-flow windwheel 100, so that leading edge 2 is in
Arc-shaped is towards upstream airintake direction sweepforward, it is possible to reduce eddy loss, so that blade has biggish flow nargin, so as to
The air quantity of air conditioner is promoted, compressor horsepower is reduced, reduces the noise of air conditioner, improve the heat dissipation capacity of air conditioner.
Other compositions such as guide vane and electric-controlled box of air conditioner according to an embodiment of the present invention etc. and operation are for ability
All be for the those of ordinary skill of domain it is known, be not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (11)
1. a kind of axial-flow windwheel, which is characterized in that including wheel hub and multiple blades, the multiple spacing with blades is located at the wheel hub
On, each blade includes leading edge, trailing edge, Ye Ding, pressure face and suction surface, the leading edge of the blade upstream airintake direction
In arc shaped sweepforward；
The hub radius is R1, and the maximum outer radius of the axial-flow windwheel is R2, radial the leaf a height of Rm, Rm=of the blade
R2-R1；
Centered on the center of rotation axis of the axial-flow windwheel, using R1+90%Rm as radius make first circle, it is described first circle with
The up-front intersection point is the first intersection point A1, and the described first round intersection point with the trailing edge is the second intersection point A2；With R1+5%Rm
For the second circle of radius work, second circle and the up-front intersection point are third intersection point A3, second circle and the trailing edge
Intersection point is the 4th intersection point A4；Make third circle by radius of R1+50%Rm, the third is round to be handed over the up-front intersection point for the 5th
Point A5, the round intersection point with the trailing edge of the third is the 6th intersection point A6；Make the 4th circle using R1+70%Rm as radius, described the
Four circles are the 7th intersection point A7 with the up-front intersection point, and the described 4th round intersection point with the trailing edge is the 8th intersection point A8；With R1+
30%Rm is that radius makees the 5th circle, the described 5th it is round be the 9th intersection point A9 with the up-front intersection point, the described 5th it is round with it is described
The intersection point of trailing edge is the tenth intersection point A10；
The line of the first intersection point A1 and third intersection point A3 is the first line L1, the 5th intersection point A5 to described first
The distance of line L1 is h1, and the distance of the 7th intersection point A7 to the first line L1 is h2, the 9th intersection point A9 to institute
The distance for stating the first line L1 is h3, wherein h1 > h2, h1 > h3, and h1=(0.09~0.13) R2, h2=(0.06~0.10)
R2, h3=(0.06~0.10) R2.
2. axial-flow windwheel according to claim 1, which is characterized in that on air-flow direction, the blade it is described
At least part of trailing edge is protruded towards downstream outgassing direction.
3. axial-flow windwheel according to claim 2, which is characterized in that the line of the second intersection point A2 and the 4th intersection point A4
Distance for the second line L2, the 6th intersection point A6 to the second line L2 is W1, the tenth intersection point A10 to described
The distance of two line L2 is W2, and the distance of the 8th intersection point A8 to the second line L2 is W3, and wherein W1 > W2 > W3, there is W1
=(0.08~0.12) R2, W2=(0.06~0.09) R2, W3=(0.03~0.06) R2.
4. axial-flow windwheel according to claim 1, which is characterized in that the rotation of the first intersection point A1 and the axial-flow windwheel
It is the 4th line L4, institute that the line for turning center o, which is the line of third line L3, the second intersection point A2 and the rotation center o,
It states the angle between third line L3 and the 4th line L4 and is defined as the first angle Ω 1, the range of Ω 1 is 85 °~105 °；
The line of the third intersection point A3 and rotation center o is the 5th line L5, the 4th intersection point A4 and the rotation
The line of center o is the 6th line L6, and the angle between the 5th line L5 and the 6th line L6 is defined as the second folder
The range of angle Ω 2, Ω 2 is 70 °~90 °, and 1 > Ω of Ω 2.
5. axial-flow windwheel according to claim 1, which is characterized in that the frontal plane of projection of each blade in the horizontal plane
Product is S1, and the annulus area between the wheel hub and the blade maximum outside diameter is S2, wherein S1/S2=0.23~0.26.
6. axial-flow windwheel according to claim 1, which is characterized in that the leaf top is from the pressure towards the suction surface
Bending.
7. axial-flow windwheel according to claim 6, which is characterized in that the leaf top is from the pressure towards the suction surface
Curved height is T, wherein T=(0.02-0.04) R2.
8. axial-flow windwheel described in any one of -7 according to claim 1, which is characterized in that the first intersection point A1 and described
Circular arc line between two intersection point A2 is defined as the 7th line L7, connects by the rotation center o and the described 7th of the axial-flow windwheel
The plane of line L7 is vertical plane, and the vertical plane is longitudinal section to the section of the blade, from the leaf top into the rotation
On the direction of heart o, boundary line of the longitudinal section on the suction surface includes the connected first segment curve q1 of sequence, second segment
Curve q2 and third section curve q3, the first segment curve q1 extend towards the rotation center from top to bottom, the second segment
Curve q2 extends towards the rotation center from bottom to top, and the third section curve q3 prolongs towards the rotation center from top to bottom
It stretches；
On from the leaf top to the direction of the rotation center o, boundary line of the longitudinal section on the pressure face includes suitable
The 4th section of connected curve q4 of sequence, the 5th section of curve q5 and the 6th section of curve q6, the 4th section of curve q4 direction from top to bottom
The rotation center extends, and the 5th section of curve q5 extends towards the rotation center from bottom to top, the 6th section of curve
Q6 extends towards the rotation center from top to bottom.
9. axial-flow windwheel according to claim 8, which is characterized in that the first segment curve q1 and the second segment curve
The minimum point of q2 intersection is K point, and the radial distance between the K point and the rotation center o is Rk, wherein Rk=R1+
(0.85-0.95)Rm。
10. axial-flow windwheel according to claim 9, which is characterized in that the longitudinal section is three, three longitudinal sections
Respectively by the quartering point A11, A12, the A13 on the 7th line L7, from the leading edge to the direction of the trailing edge on, three
A longitudinal section is respectively f1, f2, f3；
5th section of curve q5 and the 6th section of curve q6 intersection highest point be G point, between the G point and the K point it is vertical away from
It is V1 from the V value for V, longitudinal section f1, the V value of longitudinal section f2 is V2, and the V value of longitudinal section f3 is V3, wherein V1 < V2 < V3.
11. a kind of air conditioner, which is characterized in that including axial-flow windwheel according to claim 1 to 10.
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| CN201910941873.5A CN110513329A (en) | 2019-09-30 | 2019-09-30 | Axial-flow windwheel and air conditioner with it |
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| CN115280020A (en) * | 2020-03-24 | 2022-11-01 | 三菱电机株式会社 | Axial fan, air supply device, and refrigeration cycle device |
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| WO2024001739A1 (en) * | 2022-06-27 | 2024-01-04 | 约克广州空调冷冻设备有限公司 | Blade and axial impeller using same |
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