CN206449014U - Axial flow fan blade and fan and air conditioner outdoor unit with same - Google Patents
Axial flow fan blade and fan and air conditioner outdoor unit with same Download PDFInfo
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- CN206449014U CN206449014U CN201720048408.5U CN201720048408U CN206449014U CN 206449014 U CN206449014 U CN 206449014U CN 201720048408 U CN201720048408 U CN 201720048408U CN 206449014 U CN206449014 U CN 206449014U
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- blade
- lacuna
- blade body
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- leaf
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- 241001484259 Lacuna Species 0.000 claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000003068 static effect Effects 0.000 abstract description 8
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000004378 air conditioning Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model relates to an air conditioning equipment technical field especially relates to an axial flow fan blade, include: the blade comprises a blade body, wherein a cavity structure is arranged at the blade top of the blade body; the cavity structure comprises two opposite parallel side walls on both sides of the cavity, and an opening between the two side walls faces to the blade top of the blade body. The utility model provides an axial flow fan blade, set up the lacuna structure through the leaf top department at the blade, two lateral walls of lacuna both sides are parallel relatively, the air current of blade positive pressure face reveals to the lacuna in through water conservancy diversion circle clearance when the fan blade moves, and can not spread to blade negative pressure face, thereby the purpose of making an uproar has been reached, and simultaneously, the air current vortex piles up and arouses the inside static pressure of lacuna and risees in the lacuna, the resistance that leads to the leakage air current flow of positive pressure face to negative pressure face increases, and then can reduce leakage volume, promote the fan air output, and can guarantee that the fan blade is difficult to take place to shake and abnormal sound under the operating mode of high-. The utility model also provides a fan and air condensing units.
Description
Technical field
The utility model is related to air conditioner technical field, more particularly to a kind of axial-flow leaf and blower fan with it and
Air-conditioner outdoor unit.
Background technology
The outer machine of traditional air conditioner is the noise source that is only second to compressor vibrating noise with axial flow blower aerodynamic noise, therefore wind
Machine noise reduction is one of blower fan optimization aspect emphasis research topic.And the aerodynamic noise of axial flow blower is mainly derived near blade,
Especially Ye Ding regions.Because region acting ability is most strong, wind speed is maximum, adds blade tip leakage vortex and occurs mainly in the area
Domain, air-flow vortex is serious, is the largest source of aerodynamic noise.Between traditional method reduces between baffle liner and fan blade leaf top
Gap, but this method is higher to production required precision, control difficulty is big.
Utility model content
Based on this, it is necessary to for aerodynamic noise it is big the problems such as can reduce that fan blade is pneumatic to make an uproar there is provided one kind
The axial-flow leaf of sound, while additionally providing a kind of blower fan and air-conditioner outdoor unit comprising the axial-flow leaf.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of axial-flow leaf, including：Lacuna structure is provided with blade body, the leaf top of blade body；Lacuna structure bag
Opening between two opposing parallel side walls positioned at lacuna both sides, two side walls is included towards the leaf top of blade body.
In one of the embodiments, lacuna structure includes auxiliary blade, and auxiliary blade is arranged on blade body close to leaf
On suction surface at top；
Auxiliary blade and partial blade body parallel interval corresponding thereto are set, to form two positioned at lacuna both sides
Opposing parallel side wall；Orthographic projection of the edge of auxiliary blade in blade body is overlapped with the edge of blade body.
In one of the embodiments, side of the auxiliary blade away from blade body leaf top passes through connecting plate and blade body
Connection, auxiliary blade, connecting plate and blade body surround lacuna.
In one of the embodiments, lacuna can be through to the trailing edge of blade body from the leading edge of blade body.
In one of the embodiments, along the leading edge of blade body to the direction of trailing edge, the sectional area of lacuna gradually subtracts
It is small.
In one of the embodiments, auxiliary blade is not more than 2cm parallel to the width at the edge of the trailing edge of blade body.
In one of the embodiments, auxiliary blade is two or three, close to the auxiliary blade and leaf of blade body
Piece body is parallel；Adjacent auxiliary blade is parallel to each other.
In one of the embodiments, surround and concave point or salient point are provided with the side wall of lacuna.
A kind of blower fan, including rotating shaft and baffle liner, in addition to the as above axial-flow leaf described in any one, blade body are circumferential
It is arranged in rotating shaft；Baffle liner is annular, and water conservancy diversion ring is located at outside axial-flow leaf, and baffle liner is centrally located at the center line of rotating shaft
On.
A kind of air-conditioner outdoor unit, including the as above axial-flow leaf described in any one.
Above-mentioned axial-flow leaf, by setting lacuna structure at blade and blade top, two side walls of lacuna both sides are relatively flat
Capable, so, when fan blade is run, the air-flow of blade pressure surface is leaked in lacuna through water conservancy diversion ring gap, without negative to blade
Pressure surface spreads, so that the purpose of noise reduction has been reached, meanwhile, air-flow vortex is accumulated in lacuna and causes lacuna inside static pressure liter
Height, the pressure differential between reducing in pressure surface and lacuna, and due in lacuna static pressure be more than suction surface, cause letting out for pressure surface
The resistance increase of air flow direction suction surface is leaked, and then leakage rate can be reduced, blower fan air output is lifted, further, since leaf top
It is leaf that to going out, wind effect is extremely sensitive, opposing parallel side wall ensure that it is leaf without large change at leaf top, so as to ensure
Fan blade is less likely to occur flutter and abnormal sound under the operating mode of high-speed cruising.
Because axial-flow leaf has above-mentioned technique effect, including the blower fan and air-conditioner outdoor unit of the axial-flow leaf also has
Corresponding technique effect.
Brief description of the drawings
The structural representation for the axial-flow leaf that Fig. 1 provides for the utility model embodiment；
Fig. 2 is Fig. 1 partial enlarged drawing；
The front view for the axial-flow leaf that Fig. 3 provides for the utility model embodiment；
The blade face air current flow schematic diagram for the axial-flow leaf that Fig. 4 provides for the utility model embodiment；
Axial-flow leaf and outer machine assembling schematic diagram that Fig. 5 provides for the utility model embodiment.
Wherein：
100- blade bodies；
110- leaves top；120- pressure surfaces；130- suction surfaces；
140- leading edges；150- trailing edges；
200- lacuna structures；
210- auxiliary blades；
220- connecting plates；
230- lacunas；
The outer machine baffle liners of 300-；
310- water conservancy diversion ring gaps；
320- air inlets；
330- air outlets.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, by the following examples, and tie
Accompanying drawing is closed, to axial-flow leaf of the present utility model and the blower fan with it, air-conditioner outdoor unit are further elaborated.Should
Understand, specific embodiment described herein only to explain the utility model, is not used to limit the utility model.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element be referred to as " directly existing " another element " on " when,
In the absence of intermediary element.Term as used herein " vertically ", " level ", "left", "right" and similar statement are
For illustrative purposes.
Axial-flow leaf of the present utility model, it is not necessary to overcome processing problem to go between reducing between baffle liner and fan blade leaf top
Gap (abbreviation water conservancy diversion ring gap), it is possible to achieve effectively reduction the pneumatic of blower fan is made an uproar in the baffle liner interstice coverage of relative loose
Sound, so that the noise total value of the equipment such as blower fan, air-conditioner outdoor unit is reduced, and using the blower fan of axial-flow leaf of the present utility model
While noise is effectively reduced, air quantity is also effectively increased.As shown in figure 1, the axle of the embodiment of the utility model one
Flow and be provided with lacuna structure 200 at fan blade, including blade body 100, the leaf top 110 of blade body 100, lacuna structure 200 is wrapped
Opening between two opposing parallel side walls positioned at the both sides of lacuna 230, two side walls is included towards the leaf top of blade body 100
110.Lacuna structure 200 is the air-flow revealed for preventing the pressure surface 120 of blade body 100 by water conservancy diversion ring gap along blade sheet
Spread to suction surface 130 on the surface of body 100.
Specifically, traditional axial-flow leaf is in the process of running, the air-flow of blade pressure surface it is subject to centrifugal forces by
Gradually close to fan blade leaf top, and through the clearance leakage between baffle liner and fan blade leaf top to blade suction surface, so as to cause fan blade gas
Dynamic noise is serious so that blower fan air output is reduced.And it is provided with lacuna at the axial-flow leaf of the present embodiment, its blade and blade top 110
Structure 200, lacuna structure 200 has lacuna 230, and in the process of running, the air-flow of pressure surface 120 is by centrifugal force for axial-flow leaf
Effect moves closer to fan blade leaf top 110, and is leaked to by water conservancy diversion ring gap 310 in lacuna 230, prevents air-flow vortex to negative
Pressure surface 130 spreads, so that noise reduction is realized, meanwhile, air-flow vortex is accumulated in lacuna 230 and causes the inside static pressure liter of lacuna 230
Height, the pressure differential between reducing in pressure surface 120 and lacuna 230, and due in lacuna 230 static pressure be more than suction surface 130, lead
Cause the leakage current of pressure surface 120 to flow to the resistance increase of suction surface 130, and then leakage rate can be reduced, lift blower fan air-out
Amount, further, since wind effect is extremely sensitive to going out for leaf top 110 leaf, the opposing parallel side wall in the both sides of lacuna 230 ensure that
It is leaf without large change at leaf top 110, so that ensure that fan blade is less likely to occur flutter and abnormal sound under the operating mode of high-speed cruising,
And then ensure the mechanical efficiency of fan blade.
The structure type of lacuna structure 200 can have a variety of, referring to Fig. 1, Fig. 2 and Fig. 5, it is preferable that lacuna structure 200 is wrapped
Auxiliary blade 210 is included, auxiliary blade 210 is arranged on blade body 100 on the suction surface 130 at leaf top 110；Auxiliary blade
210 and the parallel interval of partial blade body 100 corresponding thereto set, it is relatively flat to form two positioned at the both sides of lacuna 230
Capable side wall；Orthographic projection of the edge of auxiliary blade 210 in blade body 100 is overlapped with the edge of blade body 100.Auxiliary
Interval between blade 210 and blade body 100 forms above-mentioned lacuna 230.In other embodiments, lacuna structure 200 can be with
It is the groove extended along blade body leaf top opened up at the leaf top 110 of blade body 100.
It should be noted that the parallel everywhere blade face for referring to auxiliary blade 210 with relative blade body 100
Blade face is parallel, i.e., leaf consistent at auxiliary blade 210 and the leaf top 110 of blade body 100, both everywhere spacing it is consistent.So,
It is the extra increased local blade of blade body 100 equivalent to auxiliary blade 210, it is parallel to blade body 100, leaf and leaf
It is leaf consistent at the leaf top 110 of piece body 100, the inducement of the flutter of fan blade and abnormal sound under high-speed cruising operating mode is reduced, is reduced
The possibility of abnormal sound occurs for fan blade, it is ensured that the mechanical efficiency of fan blade.
Wherein, auxiliary blade 210 can be directly connected to blade body 100, may not be and be directly connected to.It is preferred that
Ground, side of the auxiliary blade 210 away from the leaf top 110 of blade body 100 is connected by connecting plate 220 with blade body 100, auxiliary
Blade 210, connecting plate 220 surround lacuna 230 with blade body 100.Connecting plate 220, auxiliary blade 210 and blade body 100
Can be integrally formed or be sequentially connected using modes such as welding, connecting plate 220 can also be with auxiliary blade 210, blade sheet
Body 100 is dismountable connection.
Auxiliary blade 210, connecting plate 220 can the C-shaped knots of Formation cross-section after being sequentially connected with the three of blade body 100
Structure.Certainly, three can also form the structure of other shapes, wherein, connecting plate 220 can be perpendicular to auxiliary blade 210,
It can be at an acute angle between auxiliary blade 210 or obtuse angle setting.
Referring to Fig. 3, as a preferred embodiment, along the leading edge 140 of blade body 100 to the side of trailing edge 150
To the sectional area of lacuna 230 is gradually reduced.Because auxiliary blade 210 is parallel everywhere with blade body 100, along blade body
100 leading edge 140 to the direction of trailing edge 150, the sectional area of lacuna 230 is gradually reduced, that is to say, that the width of auxiliary blade 210
It is gradually reduced by leading edge 140 to the direction of trailing edge 150.Assuming that auxiliary blade 210 is parallel with the trailing edge 150 of blade body 100
The width value at edge be h, the width value at the edge parallel with the leading edge 140 of blade body 100 of auxiliary blade 210 is H, auxiliary lobe
The width of piece 210 is x, then has h<x<H.Preferably, H=2~3h, h≤2cm.
So, fan blade is in rotary course, and air-flow is after leaf leading edge 140 or leaf top 110 enter lacuna 230, with fan blade
Acting and motion, the air-flow of lacuna 230 gradually can flow to the region of leaf tail edge 150, in flow process medium velocity and static pressure gradually
Increase, the air-flow vortex that leaf top 110 is leaked is limited in lacuna 230, the rise and air-flow of the energy of air-flow vortex with static pressure
Gradually dissipate and diminish in the motion of lacuna 230, so as to reach the purpose of noise reduction.
Further, lacuna 230 can be through to the trailing edge 150 of blade body 100 from the leading edge 140 of blade body 100.
So, the air-flow for having not been able to be dissipated in completely in lacuna 230 can flow out at trailing edge 150, beneficial to the air output of increase fan blade.
Concave point or salient point are provided with the side wall of lacuna 230 as a preferred embodiment, surrounding.Surround lacuna
230 side wall, refers to wall of the auxiliary blade 210 close to the side of lacuna 230, blade body 100 is close to the side of lacuna 230
Wall, and connecting plate 220 is close to the wall of the side of lacuna 230, can be on above three wall or three's any combination
Concave point or salient point are arranged, to discrete eddy airstream so as to reach the effect of reduction panting energy, and then contributes to reduction to make an uproar
Sound.
As a preferred embodiment, auxiliary blade 210 is two or three, close to the auxiliary of blade body 100
Help blade 210 parallel with blade body 100；Adjacent auxiliary blade 210 is parallel.
Referring to Fig. 4 and Fig. 5, the axial-flow leaf of the present embodiment, air-flow enters fan blade pressure surface 120 from air inlet 320 and done work
Qu Hou, with the axial-rotation of fan blade, on the one hand air-flow obtains kinetic energy and accelerates to the side of air outlet 330, on the one hand again due to centrifugation
Power is acted on to be flowed to the region of leaf top 110, is flowed through water conservancy diversion ring gap 310 to suction surface 130, halfway into fan blade leaf top lacuna
230, vortex is limited in leaf top lacuna 230 and can not be diffused into suction surface 130 immediately, and as air-flow is to the direction of leaf tail edge 150
Flowing, pressure, which gradually strengthens, on the way promotes to breathe heavily kinetic energy dissipation disappearance, and noise reduces.Simultaneously as the static pressure of lacuna 230 is more than fan blade
The region of suction surface 130, causes the leakage current of pressure surface 120 to flow to the resistance increase of suction surface 130, is let out therefore, it is possible to reduce
Leakage quantity, plays a part of lifting compressor flow.By the air quantity and noise emulation experiment of machine over list, the utility model is demonstrated
Axial-flow leaf air quantity improve 150m3/ h or so, Kuanping Terrane declines 0.8dB (A) left and right, and specific emulation data see the table below：
As seen from the above table, it is identical it is leaf under, the axle stream wind of lacuna structure 200 that the increase of leaf top is formed by auxiliary blade 210
Leaf air quantity improves 150m3/ h or so, with the increase of rotation speed of fan, the lifting capacity of air quantity gradually increases；And due to lacuna knot
The erasure effect of structure 200, the noise improvement of axial-flow leaf 0.8~0.9dB (A).
The blower fan of the embodiment of the utility model one, including rotating shaft and baffle liner, in addition to as above described in any embodiment
Axial-flow leaf.Wherein, blade body is circumferentially provided in rotating shaft；Baffle liner is annular, and water conservancy diversion ring is located at outside axial-flow leaf, led
Stream circle is centrally located on the center line of rotating shaft.So as to which the blower fan has noise small, the big advantage of air output, and need not limit
Gap between fan blade leaf top and baffle liner, it is to avoid easily because wiping the phenomenon touched and cause security incident between fan blade and baffle liner
Occur.
The air-conditioner outdoor unit of the embodiment of the utility model one, including the as above axial-flow leaf described in any embodiment, so that
The air-conditioner outdoor unit has noise small, the big advantage of air output, and need not limit the gap between fan blade leaf top and baffle liner,
Easily the phenomenon of security incident is caused to occur because wiping to touch between the axial-flow leaf and air-conditioning baffle liner that avoid the outer machine of tradition.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of axial-flow leaf, it is characterised in that including：Blade body (100), the leaf top (110) of the blade body (100)
Place is provided with lacuna structure (200)；The lacuna structure (200) includes opposing parallel positioned at two of lacuna (230) both sides
Opening between side wall, two side walls is towards the leaf top (110) of the blade body (100).
2. axial-flow leaf according to claim 1, it is characterised in that the lacuna structure (200) includes auxiliary blade
(210), the auxiliary blade (210) is arranged on the blade body (100) on the suction surface (130) at leaf top (110) place；
The auxiliary blade (210) and part the blade body (100) parallel interval corresponding thereto are set, and are located at being formed
Two opposing parallel side walls of lacuna (230) both sides；The edge of the auxiliary blade (210) is in the blade body
(100) orthographic projection on is overlapped with the edge of the blade body (100).
3. axial-flow leaf according to claim 2, it is characterised in that the auxiliary blade (210) is away from the blade sheet
The side on body (100) leaf top (110) is connected by connecting plate (220) with the blade body (100), the auxiliary blade
(210), the connecting plate (220) surrounds the lacuna (230) with the blade body (100).
4. axial-flow leaf according to claim 3, it is characterised in that the lacuna (230) can be from the blade body
(100) leading edge (140) is through to the trailing edge (150) of the blade body (100).
5. axial-flow leaf according to claim 3, it is characterised in that along the leading edge (140) of the blade body (100)
To the direction of trailing edge (150), the sectional area of the lacuna (230) is gradually reduced.
6. axial-flow leaf according to claim 5, it is characterised in that the auxiliary blade (210) is parallel to the blade
The width at the edge of the trailing edge (150) of body (100) is not more than 2cm.
7. axial-flow leaf according to claim 2, it is characterised in that the auxiliary blade (210) is two or three,
The auxiliary blade (210) close to the blade body (100) is parallel with the blade body (100)；Adjacent is described auxiliary
Blade (210) is helped to be parallel to each other.
8. axial-flow leaf according to claim 1, it is characterised in that be provided with the side wall for surrounding the lacuna (230)
Concave point or salient point.
9. a kind of blower fan, including rotating shaft and baffle liner, it is characterised in that also including the axle as described in claim any one of 1-8
Fan blade is flowed, the blade body (100) is circumferentially provided in the rotating shaft；The baffle liner is annular, and the water conservancy diversion ring is set
Outside the axial-flow leaf, the baffle liner is centrally located on the center line of the rotating shaft.
10. a kind of air-conditioner outdoor unit, it is characterised in that including the axial-flow leaf as described in claim any one of 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720048408.5U CN206449014U (en) | 2017-01-12 | 2017-01-12 | Axial flow fan blade and fan and air conditioner outdoor unit with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720048408.5U CN206449014U (en) | 2017-01-12 | 2017-01-12 | Axial flow fan blade and fan and air conditioner outdoor unit with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206449014U true CN206449014U (en) | 2017-08-29 |
Family
ID=59671675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720048408.5U Withdrawn - After Issue CN206449014U (en) | 2017-01-12 | 2017-01-12 | Axial flow fan blade and fan and air conditioner outdoor unit with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206449014U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087330A (en) * | 2017-11-27 | 2018-05-29 | 珠海格力电器股份有限公司 | Blade structure and air conditioner with same |
-
2017
- 2017-01-12 CN CN201720048408.5U patent/CN206449014U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087330A (en) * | 2017-11-27 | 2018-05-29 | 珠海格力电器股份有限公司 | Blade structure and air conditioner with same |
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