CN207814038U - Through-flow fan blade blade, through-flow fan blade, indoor unit and air conditioner - Google Patents
Through-flow fan blade blade, through-flow fan blade, indoor unit and air conditioner Download PDFInfo
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- CN207814038U CN207814038U CN201721731707.5U CN201721731707U CN207814038U CN 207814038 U CN207814038 U CN 207814038U CN 201721731707 U CN201721731707 U CN 201721731707U CN 207814038 U CN207814038 U CN 207814038U
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Abstract
A kind of through-flow fan blade blade of the utility model offer, through-flow fan blade, indoor unit and air conditioner.The through-flow fan blade blade includes blade body (1), and blade body (1) includes blade back (2), and the rectification projection (3) for protruding from blade back (2) is provided on blade back (2).Through-flow fan blade blade according to the present utility model, the flow separation phenomenon at blade back when can reduce fan blade rotation reduce air-flow separation loss.
Description
Technical field
The utility model belongs to air-conditioning technique field, and in particular to a kind of through-flow fan blade blade, through-flow fan blade, interior
Machine and air conditioner.
Background technology
Air conditioner room unit includes mainly the main parts sizes such as evaporator, through-flow fan blade, motor, spiral case, volute tongue, wherein passing through
Gap (abbreviation volute tongue gap) between stream fan blade and volute tongue is a parameter very sensitive in air conditioner, in same air conditioner
Volute tongue gap is usually a fixed numerical value.
Through-flow fan blade is widely used in since the low outlet air of noise is steady in domestic air conditioner.As depicted in figs. 1 and 2, it passes through
Stream fan blade is welded one by one by multiple middle section fan blades 1 ', and middle section fan blade 1 ' includes a disk 2 ' and multiple non-equidistantly distributed
Blade 3 ', each blade 3 ' includes the four segment type lines composition such as blade back, leaf basin and vane inside edge, outer rim, blade back and leaf basin
It can be with the spline curve structure of right and wrong circular arc.
The blade surface of existing through-flow fan blade is all the line design to smoothly transit, according to aerodynamics analysis, through-flow
The back of entry zone blade occurs that there are more serious separation situations when fan blade works, especially in vane thickness maximum position
More obvious (as shown in Figure 3) is detached in blade grid passage later, blade separated wake is affected to indoor unit performance, especially
Blade back flow separation phenomenon is apparent when being easy to cause fan blade rotation, and separation loss is larger.
Utility model content
Therefore, the technical problem to be solved by the present invention is to provide a kind of through-flow fan blade blade, through-flow fan blade, interiors
Machine and air conditioner, the flow separation phenomenon at blade back when can reduce fan blade rotation reduce air-flow separation loss.
To solve the above-mentioned problems, the utility model provides a kind of through-flow fan blade blade, including blade body, blade body
Including blade back, the rectification projection for protruding from blade back is provided on blade back.
Preferably, along air current flow direction, rectification projection extends from the maximum gauge of blade body to rear side.
Preferably, rectification projection is curved surface, and along air current flow direction, the curvature of rectification projection gradually increases.
Preferably, in the section along air current flow direction, the initiating terminal of blade back and rectification projection has the first intersection point,
The end of blade back and rectification projection has the second intersection point, blade back the first point of intersection tangent line and rectification projection in the first point of intersection
Tangent line between angle be θ 1, blade back the second point of intersection tangent line and rectification projection between the tangent line of the second point of intersection
Angle is θ 2,1 ＜ θ 2 of θ.
Preferably, 1=5 °~30 ° θ, and/or, 2=15~60 ° θ.
Preferably, the maximum between the first straight line where the line between rectification projection and the first intersection point and the second intersection point
Distance is H, and using the vertex of the rectification projection of maximum distance apart as separation, the line between separation and the first intersection point is first
Projected length on straight line is A1, and projected length of the line in first straight line between separation and the second intersection point is A2, A1
＞ A2.
Preferably, rectification projection further includes vane inside edge, and the line between the second intersection point and vane inside edge is in first straight line
On be projected as A3, A3 >=A2.
Preferably, rectification projection is one or more, and when rectification projection is multiple, multiple rectification projections are along blade sheet
The length direction interval of body is arranged.
Preferably, the length of blade body is L, and rectification projection is L1, L1=along the length of blade body length direction
(0.05~0.2) L；And/or between two adjacent rectification projections between be divided into λ, λ=(1~5) L1；And/or rectification projection
Threshold value apart from blade body is L0, L0≤L1.
Preferably, along air current flow direction, two opposite flanks of rectification projection are perpendicular to blade back.
Another aspect according to the present utility model, provides a kind of through-flow fan blade, including disk and between the circumferential direction of disk
Every the through-flow fan blade blade being arranged on disk, which is above-mentioned through-flow fan blade blade.
It is according to the present utility model in another aspect, provide a kind of indoor unit, including through-flow fan blade blade, the through-flow fan blade
Blade is above-mentioned through-flow fan blade blade.
It is according to the present utility model in another aspect, provide a kind of air conditioner, including through-flow fan blade blade, the through-flow fan blade
Blade is above-mentioned through-flow fan blade blade.
Through-flow fan blade blade provided by the utility model, including blade body, blade body include blade back, are arranged on blade back
There is the rectification projection for protruding from blade back.The rectification projection of blade back is protruded from due to being provided on the blade back of blade body,
Rectified action can be played to the air-flow for flowing through blade back, to when fan blade rotates, play stabilization to air-flow so that import
Radial air flow flowed along blade back direction, reduce the axial float of air-flow, reach rectification effect, blade when reducing fan blade rotation
The flow separation phenomenon at back reduces air-flow separation loss.
Description of the drawings
Fig. 1 is the structural schematic diagram of through-flow fan blade in the prior art；
Fig. 2 is the three-dimensional structure diagram of the middle section fan blade of through-flow fan blade in the prior art；
Fig. 3 is the three-dimensional structure diagram of the through-flow fan blade blade of the utility model embodiment；
Fig. 4 is the structure chart of the through-flow fan blade blade of the utility model embodiment；
Fig. 5 is the first size structure chart of the through-flow fan blade blade of the utility model embodiment；
Fig. 6 is the second dimensional structure figure of the through-flow fan blade blade of the utility model embodiment；
Fig. 7 is the structural schematic diagram of the through-flow fan blade of the utility model embodiment；
Fig. 8 is the side structure schematic view of the through-flow fan blade of the utility model embodiment；
Fig. 9 is the dimensional structure diagram of the through-flow fan blade of the utility model embodiment；
Figure 10 is the structural schematic diagram of the through-flow fan blade of the utility model embodiment.
Reference numeral is expressed as：
1, blade body；2, blade back；3, rectification projection；4, vane inside edge；5, disk.
Specific implementation mode
In conjunction with referring to shown in Fig. 3 to 10, embodiment according to the present utility model, through-flow fan blade blade includes blade body 1,
Blade body 1 includes blade back 2, and the rectification projection 3 for protruding from blade back 2 is provided on blade back 2.
The rectification projection 3 that blade back 2 is protruded from due to being provided on the blade back 2 of blade body 1, can be to flowing through leaf
The air-flow of the back of the body 2 plays rectified action, to when fan blade rotates, play stabilization to air-flow so that the radial air flow of import
Along the surface flow of blade back 2, the axial float of air-flow is reduced, reaches rectification effect, blade back when reducing fan blade rotation
Flow separation phenomenon reduces air-flow separation loss, accelerates the effective flowing inside leaf grating, improve indoor unit air quantity.
Preferably, along air current flow direction, rectification projection 3 extends from the maximum gauge of blade body 1 to rear side.By
The back of entry zone blade occurs that there are more serious separation situations when through-flow fan blade works, especially vane thickness most
Separation is more obvious in blade grid passage after big position, therefore, the maximum gauge in blade body 1 is arranged in rectification projection 3
Place, and extend to rear side along air current flow direction, rectification effect of the rectification projection 3 to air-flow can be further enhanced, is reduced
The flow separation phenomenon in the latter half channel of blade body 1.
Preferably, rectification projection 3 is curved surface, and along air current flow direction, the curvature of rectification projection 3 gradually increases.Due to
The flow behavior of air-flow, since maximum blade thickness position, along the flow direction of air-flow, flow separation phenomenon gradually adds
Weight, therefore, it is necessary to be designed to the shape of rectification projection 3 according to the flow behavior of air-flow so that the curvature edge of rectification projection 3
It and gradually increases along air current flow direction, it is existing to more efficiently reduce separation of the air-flow in blade grid passage on the whole
As.
In the present embodiment, the cross section of rectification projection is fin shape, and the angle of wherein through-flow fan blade blade center line is β 1,
In the angular range, the vane thickness of each position is different from, and is β 2 in some position angle of blade center line, herein leaf
The thickness of piece is up to d, and the starting point that the commutator bar of fin shape is arranged on blade is in the positions through-flow fan blade maximum blade thickness d
Place is disposed to extend along blade back to the direction close to vane inside edge.
Preferably, in the section along air current flow direction, the initiating terminal of blade back 2 and rectification projection 3 has first to hand over
Point, the end of blade back 2 and rectification projection 3 have the second intersection point, blade back 2 the first point of intersection tangent line and rectification projection 3 the
Angle between the tangent line of one point of intersection is θ 1, blade back 2 the second point of intersection tangent line with rectification projection 3 in the second point of intersection
Angle between tangent line is θ 2,1 ＜ θ 2 of θ.
Preferably, 1=5 °~30 ° θ, and/or, 2=15~60 ° θ.
Preferably, between the first straight line where the line between rectification projection 3 and the first intersection point and the second intersection point most
Big distance is H, and using the vertex of the rectification projection 3 of maximum distance apart as separation, the line between separation and the first intersection point exists
Projected length in first straight line is A1, and projected length of the line in first straight line between separation and the second intersection point is
A2, A1 ＞ A2.
Preferably, rectification projection 3 further includes vane inside edge 4, and the line between the second intersection point and vane inside edge 4 is straight first
It is projected as A3, A3 >=A2 on line.
By limiting the shape of rectification projection 3, it can effectively change the width of blade grid passage, reduce 2 surface of blade back
Air-flow detaches.
Preferably, rectification projection 3 is one or more, and when rectification projection 3 is multiple, multiple rectification projections 3 are along leaf
The length direction interval of piece ontology 1 is arranged.
In the present embodiment, the length of blade body 1 be L, rectification projection 3 along 1 length direction of blade body length
For L1, L1=(0.05~0.2) L；And/or between two adjacent rectification projections 3 between be divided into λ, λ=(1~5) L1；With/
Or, threshold value of the rectification projection 3 apart from blade body 1 is L0, L0≤L1.
Preferably, along air current flow direction, two opposite flanks of rectification projection 3 are multiple continuous perpendicular to blade back 2
Rectification projection 3 forms notched profile structure along the length direction of blade body 1 on 2 surface of blade back of blade body 1, to
So that the volute tongue gap non-equidistant variation between through-flow fan blade and volute tongue.Notched profile of the rectification projection 3 on blade back surface,
So that air-flow and the volute tongue collision frequency on blade back surface are avoided the peak hour changes when through-flow fan blade rotates, reduce wind when through-flow fan blade rotates
The rotational noise generated between leaf and volute tongue, to reduce noise of indoor unit.
Preferably, the rectification projection 3 of the utility model at least forms a zigzag fashion over the paddle, i.e., on blade
The quantity n of commutator bar is no less than 1.When rectification projection 3 is only covered with entire leaf there are one big rectification projection over the paddle
When the length direction of piece ontology 1, more obvious inhibition can be played to axial flow.
By taking certain fan blade parameter L=65mm, L1=0.05H, λ=L1=L0 as an example, fan blade and show that the utility model designs
There is performance test data comparison of the fan blade on certain air conditioner as shown in the table：
| Scheme | Air quantity m3/h | Noise dB (A) | Power W |
| Existing fan blade | 410 | 42.8 | 33 |
| The application fan blade | 425 | 41.5 | 32.9 |
As can be seen from the table, for existing fan blade, after the fan blade for using the application, air quantity improves close
4%, while noise reduces 1.3dB (A).
In conjunction with referring to shown in Fig. 7 to Figure 10, embodiment according to the present utility model, through-flow fan blade includes disk 5 and along circle
The through-flow fan blade blade of disk 5 being provided at circumferentially spaced on disk 5, the through-flow fan blade blade are above-mentioned through-flow fan blade blade.
Embodiment according to the present utility model, indoor unit include through-flow fan blade blade, which is above-mentioned
Through-flow fan blade blade.
Embodiment according to the present utility model, air conditioner include through-flow fan blade blade, which is above-mentioned
Through-flow fan blade blade.
Those skilled in the art will readily recognize that under the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all in this practicality
All any modification, equivalent and improvement etc., should be included in the guarantor of the utility model made by within novel spirit and principle
Within the scope of shield.Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill of the art
For personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with modification.
Claims (13)
1. a kind of through-flow fan blade blade, which is characterized in that including blade body (1), the blade body (1) includes blade back (2),
The rectification projection (3) for protruding from the blade back (2) is provided on the blade back (2).
2. through-flow fan blade blade according to claim 1, which is characterized in that along air current flow direction, the rectification is convex
(3) are played from the maximum gauge of the blade body (1) to extend to rear side.
3. through-flow fan blade blade according to claim 1, which is characterized in that the rectification projection (3) is curved surface, along gas
Flow direction is flowed, the curvature of the rectification projection (3) gradually increases.
4. through-flow fan blade blade according to claim 1, which is characterized in that in the section along air current flow direction,
The initiating terminal of the blade back (2) and the rectification projection (3) has the first intersection point, the blade back (2) and the rectification projection (3)
End there is the second intersection point, the blade back (2) to be handed over first in tangent line and the rectification projection (3) of first point of intersection
The angle between tangent line at point is θ 1, and the blade back (2) exists in the tangent line of second point of intersection with the rectification projection (3)
Angle between the tangent line of second point of intersection is θ 2,1 ＜ θ 2 of θ.
5. through-flow fan blade blade according to claim 4, which is characterized in that 1=5 °~30 ° θ, and/or, θ 2=15~
60°。
6. through-flow fan blade blade according to claim 4, which is characterized in that the rectification projection (3) is handed over described first
The maximum distance between the first straight line where line between point and second intersection point is H, described in maximum distance apart
The vertex of rectification projection (3) is separation, and the line between the separation and first intersection point is in the first straight line
Projected length be A1, projected length of the line in the first straight line between the separation and second intersection point be
A2, A1 ＞ A2.
7. through-flow fan blade blade according to claim 6, which is characterized in that the rectification projection (3) further includes in blade
Edge (4), line between second intersection point and the vane inside edge (4) are projected as A3 in the first straight line, and A3 >=
A2。
8. through-flow fan blade blade according to any one of claim 1 to 7, which is characterized in that the rectification projection (3) is
One or more, when the rectification projection (3) is multiple, multiple rectification projections (3) are along the blade body (1)
Length direction interval is arranged.
9. through-flow fan blade blade according to claim 8, which is characterized in that the length of the blade body (1) is L, institute
It is L1, L1=(0.05~0.2) L that rectification projection (3), which is stated, along the length of the blade body (1) length direction；And/or phase
It is divided into λ, λ=(1~5) L1 between two adjacent rectification projections (3)；And/or the rectification projection (3) is apart from institute
The threshold value for stating blade body (1) is L0, L0≤L1.
10. through-flow fan blade blade according to claim 1, which is characterized in that along air current flow direction, the rectification is convex
Two opposite flanks of (3) are played perpendicular to the blade back (2).
11. a kind of through-flow fan blade, including disk (5) and being provided at circumferentially spaced on the disk (5) along the disk (5)
Through-flow fan blade blade, which is characterized in that the through-flow fan blade blade is the through-flow fan blade described in any one of claims 1 to 10
Blade.
12. a kind of indoor unit, including through-flow fan blade blade, which is characterized in that the through-flow fan blade blade is claims 1 to 10
Any one of described in through-flow fan blade blade.
13. a kind of air conditioner, including through-flow fan blade blade, which is characterized in that the through-flow fan blade blade is claims 1 to 10
Any one of described in through-flow fan blade blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721731707.5U CN207814038U (en) | 2017-12-11 | 2017-12-11 | Through-flow fan blade blade, through-flow fan blade, indoor unit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721731707.5U CN207814038U (en) | 2017-12-11 | 2017-12-11 | Through-flow fan blade blade, through-flow fan blade, indoor unit and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814038U true CN207814038U (en) | 2018-09-04 |
Family
ID=63332064
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721731707.5U Active CN207814038U (en) | 2017-12-11 | 2017-12-11 | Through-flow fan blade blade, through-flow fan blade, indoor unit and air conditioner |
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| Country | Link |
|---|---|
| CN (1) | CN207814038U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105152A (en) * | 2017-12-11 | 2018-06-01 | 珠海格力电器股份有限公司 | Through-flow fan blade blade, through-flow fan blade, indoor unit and air conditioner |
| EP4112945A4 (en) * | 2020-02-25 | 2024-03-20 | Lg Electronics Inc | Cross-flow fan |
-
2017
- 2017-12-11 CN CN201721731707.5U patent/CN207814038U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105152A (en) * | 2017-12-11 | 2018-06-01 | 珠海格力电器股份有限公司 | Through-flow fan blade blade, through-flow fan blade, indoor unit and air conditioner |
| EP4112945A4 (en) * | 2020-02-25 | 2024-03-20 | Lg Electronics Inc | Cross-flow fan |
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