CN209687799U - A kind of axial-flow leaf and axial flow blower - Google Patents
A kind of axial-flow leaf and axial flow blower Download PDFInfo
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- CN209687799U CN209687799U CN201920246954.9U CN201920246954U CN209687799U CN 209687799 U CN209687799 U CN 209687799U CN 201920246954 U CN201920246954 U CN 201920246954U CN 209687799 U CN209687799 U CN 209687799U
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Abstract
The utility model relates to a kind of axial-flow leaf and axial flow blowers, and including wheel hub and the blade connecting with the wheelboss side wall, the wheel hub has the first side wall interconnected and second sidewall along its axial direction；On the direction far from the second sidewall, the first side wall with the hub axis in 17 ° -23 ° of angle to slope inwardly.By being that a part slopes inwardly by the sidewall design of the wheel hub, windage can be effectively reduced, and the fan blade connecting with the wheelboss side wall extends to the intilted part of wheel hub, increases the front face area of fan blade；It reduces windage and increases front face area and combine, greatly improve draft capacity and air output, and 17 ° -23 ° of angle had not only facilitated production, but also was capable of providing relatively large air output.
Description
Technical field
The utility model relates to field of home appliance technology more particularly to a kind of axial-flow leafs and axial flow blower.
Background technique
With the continuous improvement of quality of life, requirement of the people to environment is higher and higher.People pay attention in outdoor environment again
While safety, the comfort of indoor environment is also paid attention to further.Indoor environment is adjusted, most common not mistake
In air-conditioning, indoor temperature, humidity etc. can be adjusted in air-conditioning, make people at all seasons and can enjoy health, easypro
Suitable temperature and humidity environment.Air-conditioning is generally divided into outdoor unit and indoor unit, and axial flow blower is needed to carry out air-supply heat dissipation in outdoor unit, but
It is that axial flow blower has two in the process of running, first is that noise is larger, second is that air output is insufficient.Although not solving above-mentioned
Two problems have had many improvements carrying out or completing.But the preferable axial flow blower of general noise reduction, air-supply
It measures all relatively low, it is difficult to meet air-supply demand；And the biggish axial flow blower of air output, noise are again bigger, seriously affect sound ring
Border.
Accordingly, it is desirable to provide a kind of axial-flow leaf and axial flow blower solve the deficiencies in the prior art.
Utility model content
In order to solve the problems in the prior art, the utility model provides a kind of axial-flow leaf and axial flow blower.
A kind of axial-flow leaf, including wheel hub and the blade connecting with the wheelboss side wall, the wheel hub has along its axial direction
The first side wall interconnected and second sidewall；
On the direction far from the second sidewall, the first side wall is to be in 17 ° -23 ° of angle with the hub axis
Degree slopes inwardly.
Further, the lenth ratio of the first side wall and the second sidewall in the axial direction of the wheel hub is 0.4-
0.5。
Further, the wheel hub includes along its axial hollow circuit cylinder interconnected and hollow round table, the hollow circle
The side of platform forms the first side wall, and the side of the hollow circuit cylinder forms the second sidewall.
Further, the first side wall and the second sidewall are set gradually along airflow direction.
Further, the blade has the first side and second side that are oppositely arranged, the first side and described
Second side is distributed along the airflow direction；
The second side successively includes first segment, second segment, third section and the along the direction far from the hub axis
Four sections, the tie point of the first segment and the wheel hub is the first critical point, the tie point of the first segment and the second segment
For the second critical point, the tie point of the second segment and the third section is third critical point, the third section and the described 4th
The tie point of section is the 4th critical point；
Far from the wheel hub axially direction, the first segment extends to the direction far from the first side, with
The vertical plane of the axis of the wheel hub is the first plane, straight line and institute between first critical point and second critical point
The angle for stating the first plane is 6-10 °；
The first segment linearly or camber line.
Further, the camber line that the first segment is 140-165mm in radius.
Further, the camber line that the first segment is 150mm in radius.
Further, on the direction of the vertical separate hub axis, first critical point and described second critical
The length of straight line is the first length between point, and the length of straight line is second long between first critical point and the 4th critical point
Degree；
The range of the ratio of first length and second length is 1:2 to 1:4.
Further, the ratio of first length and second length is 1:3.
Further, the second segment and the third section form the curve being recessed to the first side, described
Third critical point is the point that first side described in distance is nearest in the curve；
The third critical point and first critical point are in same first plane.
Further, first plane where second critical point and described the where the third critical point
The distance between one plane is 15-23mm.
Further, the blade has the third side that is oppositely arranged and a four side, the first side, described the
Three sides, the second side and the four side are sequentially connected end to end；The side wall of the third side and the wheel hub connects
It connects, the tie point of described 4th section and the four side is the 5th critical point；
On the direction of the vertical separate hub axis, straight line between second critical point and the 4th critical point
Length is third length, and the length of first critical point to straight line between the 5th critical point is the 4th length；
The range of the ratio of the third length and the 4th length is 2.5:5 to 3.5:5.
Further, the ratio of the third length and the 4th length is 3:5.
Further, the radius of circumference where second critical point is 78-85mm；
The radius of circumference where the third critical point is 78-85mm.
Further, the 4th critical point is the point that first side described in distance is farthest in the second side；It is described
4th section is the camber line of 8-12mm in radius.
Further, described 4th section is the camber line of 10mm in radius.
Based on same invention thinking, the utility model additionally provides a kind of axial flow blower, including the axial-flow leaf.
The technical solution of the utility model has the advantages that compared with the immediate prior art
The axial-flow leaf that technical solution provided by the utility model provides, by being one by the sidewall design of the wheel hub
Point slope inwardly, can effectively reduce windage, and the fan blade connecting with the wheelboss side wall is to the intilted part of wheel hub
Extend, increases the front face area of fan blade；Reduce windage and increase front face area combine, greatly improve draft capacity and
Air output, and 17 ° -23 ° of angle had not only facilitated production, but also was capable of providing relatively large air output.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in a direction of axial-flow leaf provided by the utility model；
Fig. 2 is the structural schematic diagram in another direction of axial-flow leaf provided by the utility model；
Fig. 3 is the front view of the wheel hub of axial-flow leaf provided by the utility model；
Fig. 4 is the structural schematic diagram of the fan blade of axial-flow leaf provided by the utility model.
Wherein, 1- the first side wall；2- second sidewall；3- wheel hub；4- blade；The first critical point of 5-；The second critical point of 6-；7-
Third critical point；The 4th critical point of 8-；The 5th critical point of 9-；The first side 10-；The second side 11-；12- third side；13-
Four side；14- hollow circuit cylinder；15- hollow round table.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
As shown in Figures 1 to 4, the utility model provides a kind of axial-flow leaf, including wheel hub 3 and with 3 side of wheel hub
The blade 4 of wall connection, which is characterized in that the wheel hub 3 has the first side wall 1 interconnected and second sidewall 2 along its axial direction；
Along the direction far from the second sidewall 2, the first side wall 1 is to be in 17 ° -23 ° with 3 axis of wheel hub
Angle slope inwardly.
By being that a part slopes inwardly by the sidewall design of the wheel hub 3, windage can be effectively reduced, and with it is described
The blade 4 of 3 side wall of wheel hub connection extends to the intilted part of wheel hub 3, increases the front face area of blade 4；Reduce windage
It is combined with front face area is increased, greatly improves draft capacity and air output by being by the sidewall design of the wheel hub 3
A part slopes inwardly, and can effectively reduce windage, and the blade 4 connecting with 3 side wall of wheel hub slopes inwardly to wheel hub 3
Part extend, increase the front face area of blade 4；It reduces windage and increases front face area and combine, greatly improve and send
Wind energy power and air output；And 17 ° -23 ° of angle had not only facilitated production, but also was capable of providing relatively large air output.
In some embodiments of the utility model, the first side wall 1 and the second sidewall 2 are in the wheel hub 3
Lenth ratio in axial direction is 0.4-0.5.
The first side wall 1 is inclined side wall, brings the effect for increasing air output, and the ratio of shared side wall is got over
Greatly, increase effect to be more obvious, but will lead to wheel hub 3 if 1 proportion of the first side wall is excessive and rotate unstable, production difficulty
Greatly, therefore its proportion should be controlled in the reasonable scope, and in the range of above-mentioned 0.4-0.5, can either brought larger
Increase air output effect, and can guarantee the stability in 3 rotation process of wheel hub, and convenient for production quick.
In some embodiments of the utility model, the wheel hub 3 includes along its axial hollow circuit cylinder 14 interconnected
With hollow round table 15, the side of the hollow round table 15 forms the first side wall 1, and the side of the hollow circuit cylinder 14 forms institute
State second sidewall 2.
The shape of wheel hub 3 is with the shape of axisymmetrical, and more typically and production is more conveniently prismatic or cylinder
Shape, prismatic relative to cylinder, the air drag in rotation process is larger, and has a fixing to the patency of air-supply flowing
It rings, therefore selects the combination of cylindrical and truncated cone-shaped.
In some embodiments of the utility model, the first side wall 1 and the second sidewall 2 along airflow direction successively
Setting.
The first side wall 1 has inclination, therefore it can be guaranteed air intake in inlet side, and then improves air output.
In some embodiments of the utility model, the blade 4 has the first side 10 being oppositely arranged and second side
Side 11, the first side 10 and the second side 11 are distributed along the airflow direction；
The second side 11 along far from 3 axis of wheel hub direction successively include first segment, second segment, third section and
4th section, the tie point of the first segment and the wheel hub 3 is the first critical point 5, the company of the first segment and the second segment
Contact is the second critical point 6, and the tie point of the second segment and the third section is third critical point 7, the third section and institute
The tie point for stating the 4th section is the 4th critical point 8；
Far from 3 axially direction of wheel hub, the first segment extends to the direction far from the first side 10,
The plane vertical with the axis of the wheel hub 3 is the first plane, straight between first critical point 5 and second critical point 6
Line and the angle of first plane are 6-10 °.
There are many improvement project for increasing air output in current technology, but generally increase air output all along with noise
Increase, and the Curve Design of second side 11 can be effectively reduced noise in the present embodiment, and the first critical point 5 to the second is critical
Effect is best when the straight line of point 6 and the angle of first plane are 6-10 °, and the placement and setting angle due to wheel hub be not true
It is fixed, therefore illustrate using the first plane the tilt angle of the straight line between the first critical point 5 and the second critical point, when wheel hub just
It puts, i.e., when hub axis is with horizontal plane, then the first plane is horizontal plane at this time, the inclination angle hereinafter in relation to some straight lines
The description of degree is illustrated also with the first plane.
In some embodiments of the utility model, the first segment linearly or camber line.Two kinds of shapes of straight line and camber line
Production is all more convenient, and for the integrated curved shape for cooperating the second side 11, the first straight line, which is designed as camber line, to be advisable.
In some embodiments of the utility model, the first segment is the camber line of 140-165mm in radius.Arc shape
For straight line, production difficulty is larger, and as the radius of camber line reduces, difficulty gradually increased, in order to both can guarantee and the
The cooperation of 11 curve of dual side-edge, and facilitate production, while preferable construction effect can be brought, select radius for 140-165mm
Camber line.
In some embodiments of the utility model, the first segment is the camber line of 150mm in radius.The half of the camber line
When diameter is 150mm, everyway has preferably performance, especially in terms of noise reduction.
In some embodiments of the utility model, on the direction of vertical separate 3 axis of wheel hub, described first faces
The length of straight line is the first length between boundary's point 5 and second critical point 6, first critical point 5 and the 4th critical point 8
Between straight line length be the second length；
The range of the ratio of first length and second length is 1:2 to 1:4.
The curve negotiating of second side 11 is bent turnover several times and is formed, and each section of length and curvature is to production difficulty
And anti-acoustic capability all has an impact, when the first length and the second length are in the range of 1:2 to 1:4, production is more convenient simple, and
Noise reduction effect is fine.
In some embodiments of the utility model, the ratio of first length and second length is 1:3.
When first length and second length are 1:3, produce convenience and anti-acoustic capability is all best.
In some embodiments of the utility model, the second segment and the third section form one to first side
The curve that side 10 is recessed, the third critical point 7 are the point that first side 10 described in distance is nearest in the curve.
The combination of the second segment and the third section, the perfect curve for completing the second side 11 with merging are set
Meter, and the second segment and the third critical point 7 at the tie point of the third section are minimum, for the vertex of curve, facilitate the
Two sections with the production of third section, anti-acoustic capability is also excellent.
In some embodiments of the utility model, the third critical point 7 is in same institute with first critical point 5
It states in the first plane.
Third critical point 7 is the minimum point of recess, contour with first critical point 5, facilitates production, and shape is also regular,
Noise reduction effect is also preferable.
In some embodiments of the utility model, first plane where second critical point 6 and described the
The distance between described first plane where three critical point 7 is 15-23mm.
The height of second critical point 6 and the height of the third critical point 7 characterize radian and the institute of second segment
State the depth of recess, within the above range when noise reduction effect it is best.
In some embodiments of the utility model, the blade 4 has the third side 12 and the 4th side being oppositely arranged
Side 13, the first side 10, the third side 12, the second side 11 and the four side 13 successively connect from beginning to end
It connects；The third side 12 is connect with the side wall of the wheel hub 3, and the tie point of described 4th section and the four side 13 is the
Five critical points 9；
It is straight between second critical point 6 and the 4th critical point 8 on the direction of vertical separate 3 axis of wheel hub
The length of line is third length, and the length of first critical point 5 to 9 straight lines of the 5th critical point is the 4th length；
The range of the ratio of the third length and the 4th length is 2.5:5 to 3.5:5.
Second critical point 6 between the 4th critical point 8 at a distance from be the recess length of a curve, shared by
The ratio of 10 horizontal length of entire first side influences the difficulty of production and the effect of noise reduction, selects the length ratio in above range
Value, both sides effect are all more excellent.
In some embodiments of the utility model, the ratio of the third length and the 4th length is 3:5.
In lenth ratio within the above range, when final determining third length and the 4th length are 3:4 by comparing, only
One equalization point, production difficulty is little at this time, and noise reduction effect is very good.
In some embodiments of the utility model, the radius of the 6 place circumference of the second critical point is 78-85mm.
Second critical point 6 connects the first segment and the second segment, and the radius of the transition point of the two, place circumference is answered
The transition of first segment and second segment is set to mitigate gradual degree that is steady, and then influencing entire curve, gentle curve can make a living
It produces and provides conveniently, and noise reduction effect is also affected by this, select the radius of 78-85mm to can satisfy both above-mentioned and effect excellent together.
In some embodiments of the utility model, the radius of the 7 place circumference of third critical point is 78-85mm.
Third critical point 7 connects the second segment and the third section, and the radius of the transition point of the two, place circumference is answered
The transition of second segment and third section is set to mitigate gradual degree that is steady, and then influencing entire curve, gentle curve can make a living
It produces and provides conveniently, and noise reduction effect is also affected by this, select the radius of 78-85mm to can satisfy both above-mentioned and effect excellent together.
In some embodiments of the utility model, the 4th critical point 8 is described in distance in the second side 11
The farthest point in first side 10.
The height of 4th critical point 8 influences the 4th section of shape, also influences to connect between first side 10 and four side 13
Gradual degree, and then influence production difficulty and noise reduction effect, be designed to highest point, 10 He of first side can be made
13 transition of the four side are gentle, and bring the convenient for production and good effect on both side of noise reduction.
In some embodiments of the utility model, described 4th section is the camber line of 8-12mm in radius.
4th section of shape influences the transition of first side 10 and four side 13 between the two, selects within the scope of 8-12mm
Radius can transition it is gentle.
In some embodiments of the utility model, described 4th section is the camber line of 10mm in radius.
In the radius within the scope of above-mentioned 8-12mm, effect is optimal when 10mm.
Angle and the first side wall 1 and second sidewall 2 for above-mentioned the first side wall 1 and 3 axis of wheel hub is in wheel hub 3
Length ratio in axial direction, has selected different parameter designings to be tested respectively, with the optimal parameter of determination or parameter area.
Selection the first side wall 1 axial-flow leaf different from 3 axis angle of wheel hub first, is respectively arranged in identical
Axial flow blower in, these axial flow blowers except axial-flow leaf has it is above-mentioned it is different in addition to, rest part is all the same, different for these
Axial flow blower is run at identical conditions respectively, and the wind speed for being aligned air outlet is tested, result such as the following table 1:
Table 1: the relation table of the angle and wind speed of the first side wall and hub axis
As can be seen from the above table, when angle is between 5 ° to 17 °, with the increase of angle, wind speed quickly increases, i.e. air output
Also it increase accordingly, but after 17 °, with the increase of angle, the growth rate of wind speed obviously slows down, and hovers in 1640-1650
Between, and with the increase of angle, difficulty of surviving is gradually increased, therefore select from above-mentioned data 17 ° -23 ° as most suitable
Angular range, biggish air output can either be met, and production difficulty is relatively little, be easy production.
Then after the range that above-mentioned angle has been determined, 20 ° is selected as experimental viewpoint, then selects the first side respectively
The length of wall 1 and second sidewall 2 in 3 axial direction of wheel hub is respectively arranged in identical axis stream wind than different axial-flow leafs
In machine, these axial flow blowers except the first side wall 1 and second sidewall 2 in the length in 3 axial direction of wheel hub than in addition to different, rest part is equal
It is identical, these different axial flow blowers are run at identical conditions respectively, the wind speed for being aligned air outlet is surveyed
Examination, result such as the following table 2:
Table 2: the first side wall and second sidewall are in the upward length of hub spindle than the relation table with wind speed
As can be seen from the above table, as the increase of ratio, wind speed quickly increase, i.e., air output is also increase accordingly, but
Discovery is after ratio is greater than 0.5 in test process, it may appear that wheel hub 3 rotates unstable, unstable situation of blowing, therefore comprehensive
Above situation selects 0.4-0.5 as most suitable ratio range from above-mentioned data, can either meet biggish air output,
And the slow-roll stabilization of wheel hub 3, air-supply are stablized.
Second side 11 is curved, can effectively reduce noise, since curve is integrally formed, and different section and critical
It influences each other between point, and comprehensive Noise Reduction, therefore for some data on second side 11, synthesis measuring is carried out, respectively at every
Item parameter selectes different data, then tests the parametric synthesis of different item, determines each parameter by the measurement of noise
Data and different parameters between optimum combination data.By the statistics and analysis of test result, it is determined that it is following most preferably
It selects:
(1) straight line between first critical point 5 and second critical point 6 and the angle of first plane are 6-
10°；
(2) first segment in radius be 140-165mm camber line, and radius be 150mm when noise reduction effect it is optimal；
(3) range of the ratio of first length and second length be 1:2 to 1:4, and be 1:3 when noise reduction effect most
It is excellent；
(4) first plane where second critical point 6 and described first where the third critical point 7 are flat
The distance between face is 15-23mm；
(5) range of the ratio of the third length and the 4th length be 2.5:5 to 3.5:5, and be 3:5 when noise reduction imitate
Fruit is optimal；
(6) radius of the 6 place circumference of the second critical point is 78-85mm；
(7) radius of the 7 place circumference of third critical point is 78-85mm；
(8) described 4th section in radius be 8-12mm camber line, and be 10mm when noise reduction effect it is optimal.
In summary every different parameters produce a kind of blade 4, are respectively set as in the data area of above-mentioned items, can select
Optimal data point then selects optimal data point.Above-mentioned this blade 4 is installed on the wheel hub 3 of above-mentioned design, axis is formed
Fan blade is flowed, then is installed among axial flow blower, then tests its noise during ground handling, noise is down to 55dB
(A)/20.0uPa is minimum to be down to 50dB (A)/20.0uPa or less.
Based on the same inventive concept, the utility model additionally provides a kind of axial flow blower, including the axial-flow leaf.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (17)
1. a kind of axial-flow leaf, including wheel hub (3) and the blade (4) being connect with the wheel hub (3) side wall, which is characterized in that institute
Stating wheel hub (3) has the first side wall interconnected (1) and second sidewall (2) along its axial direction；
On the direction far from the second sidewall (2), the first side wall (1) is to be in 17 ° -23 ° with the wheel hub (3) axis
Angle slope inwardly.
2. a kind of axial-flow leaf according to claim 1, which is characterized in that the first side wall (1) and described second side
Lenth ratio of the wall (2) in the axial direction of the wheel hub (3) is 0.4-0.5.
3. a kind of axial-flow leaf according to claim 1, which is characterized in that the wheel hub (3) includes axial mutual along it
The hollow circuit cylinder (14) and hollow round table (15) of connection, the side of the hollow round table (15) form the first side wall (1), institute
The side for stating hollow circuit cylinder (14) forms the second sidewall (2).
4. a kind of axial-flow leaf according to claim 1, which is characterized in that the first side wall (1) and described second side
Wall (2) is set gradually along airflow direction.
5. a kind of axial-flow leaf according to claim 1, which is characterized in that the blade (4) has the be oppositely arranged
A side (10) and second side (11), the first side (10) and the second side (11) are along the airflow direction point
Cloth；
The second side (11) along far from the wheel hub (3) axis direction successively include first segment, second segment, third section and
4th section, the tie point of the first segment and the wheel hub (3) is the first critical point (5), the first segment and the second segment
Tie point be the second critical point (6), the tie point of the second segment and the third section is third critical point (7), described the
Three sections are the 4th critical point (8) with the 4th section of the tie point；
Far from the wheel hub (3) axially direction, the first segment extends to the direction far from the first side (10),
The plane vertical with the axis of the wheel hub (3) is the first plane, first critical point (5) and second critical point (6)
Between straight line and the angle of first plane be 6-10 °；
The first segment linearly or camber line.
6. a kind of axial-flow leaf according to claim 5, which is characterized in that the first segment is 140-165mm in radius
Camber line.
7. a kind of axial-flow leaf according to claim 6, which is characterized in that the arc that the first segment is 150mm in radius
Line.
8. a kind of axial-flow leaf according to claim 5, which is characterized in that in the vertical separate wheel hub (3) axis
On direction, the length of straight line is the first length between first critical point (5) and second critical point (6), and described first faces
The length of straight line is the second length between boundary's point (5) and the 4th critical point (8)；
The range of the ratio of first length and second length is 1:2 to 1:4.
9. a kind of axial-flow leaf according to claim 8, which is characterized in that first length and second length
Than for 1:3.
10. a kind of axial-flow leaf according to claim 5, which is characterized in that the second segment and the third section are formed
One curve being recessed to the first side (10), the third critical point (7) are the first side described in distance in the curve
The nearest point in side (10)；
The third critical point (7) and first critical point (5) are in same first plane.
11. a kind of axial-flow leaf according to claim 10, which is characterized in that the institute where second critical point (6)
The distance between described first plane where the first plane and the third critical point (7) is stated as 15-23mm.
12. a kind of axial-flow leaf according to claim 10, which is characterized in that the blade (4), which has, to be oppositely arranged
Third side (12) and four side (13), the first side (10), the third side (12), the second side (11)
It is sequentially connected end to end with the four side (13)；The third side (12) connect with the side wall of the wheel hub (3), and described
The tie point of four sections and the four side (13) is the 5th critical point (9)；
On the direction of the vertical separate wheel hub (3) axis, between second critical point (6) and the 4th critical point (8)
The length of straight line is third length, and the length of straight line is the 4th long between first critical point (5) to the 5th critical point (9)
Degree；
The range of the ratio of the third length and the 4th length is 2.5:5 to 3.5:5.
13. a kind of axial-flow leaf according to claim 12, which is characterized in that the third length and the 4th length
Ratio be 3:5.
14. a kind of axial-flow leaf according to claim 10, which is characterized in that circumference where second critical point (6)
Radius be 78-85mm；
The radius of circumference where the third critical point (7) is 78-85mm.
15. a kind of axial-flow leaf according to claim 10, which is characterized in that the 4th critical point (8) is described the
First side (10) farthest point described in distance in dual side-edge (11)；Described 4th section is the camber line of 8-12mm in radius.
16. a kind of axial-flow leaf according to claim 15, which is characterized in that described 4th section is the arc of 10mm in radius
Line.
17. a kind of axial flow blower, which is characterized in that including the described in any item axial-flow leafs of claim 1 to 16.
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| CN109723672A (en) * | 2019-02-26 | 2019-05-07 | 珠海格力电器股份有限公司 | A kind of axial-flow leaf and axial flow blower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723672A (en) * | 2019-02-26 | 2019-05-07 | 珠海格力电器股份有限公司 | A kind of axial-flow leaf and axial flow blower |
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