CN208997043U - Air inlet grille and fan - Google Patents
Air inlet grille and fan Download PDFInfo
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- CN208997043U CN208997043U CN201821372252.7U CN201821372252U CN208997043U CN 208997043 U CN208997043 U CN 208997043U CN 201821372252 U CN201821372252 U CN 201821372252U CN 208997043 U CN208997043 U CN 208997043U
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- air
- inlet grille
- flabellum
- rib
- fan
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- 241000883990 Flabellum Species 0.000 claims abstract description 59
- 241000668842 Lepidosaphes gloverii Species 0.000 claims description 19
- 238000007664 blowing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Flow Control Members (AREA)
Abstract
The utility model provides an air-inlet grille and fan, air-inlet grille includes: the fan blade comprises a plurality of ribs (10) distributed in a radial mode, wherein each rib (10) is provided with a spoke part and an extension part extending towards the direction of the fan blade, the extension parts are perpendicular to the cross section of the rotating shaft of the fan blade, the tangent line of the long dimension (11) of each extension part is inclined relative to a plane determined by the end point, close to the rotating shaft of the fan blade, of the long dimension (11) and the axis of the rotating shaft of the fan blade, and the inclination angle A is in the range of 1-89 degrees. The utility model discloses a straight line at the long limit place of the cross section of radial rib leads to blowing to the central axis of flabellum leading edge and suction surface air current attack angle among the effectual solution prior art of technical scheme very big messenger's the very poor problem of tone quality of circulation fan.
Description
Technical field
The utility model relates to fields of home appliance technology, and in particular to a kind of air-inlet grille and fan.
Background technique
Currently, as shown in Figure 1, air circulation fan and the common electric fan main distinction are: the flabellum 3 of circulation fan is installed
Angle is big, and flabellum 3 substantially completely wraps up flabellum 3 with the longer closing ventilating duct 2 of axial dimension, ventilating duct 2 is unified in the axial direction.
Therefore, the air-supply effect of circulation fan and conventional fan difference, the air-supply of the flabellum of same size, circulation fan are more concentrated, outlet air
Pressure is big, and air supplying distance is also farther, can quickly make the air circulation in room, in air-conditioned room or the heating room room Zhong Shi
Between temperature be uniformly distributed.
In the prior art, as depicted in figs. 1 and 2, the air-inlet grille of circulation fan includes multiple radial ribs 1 and multiple circumferential directions
Rib, the radial arrangement of multiple radial ribs 1.Since the straight line where the cross section long side 4 of radial ribs 1 is by flabellum
Central axis, therefore the air-flow entered from the radial ribs parallel with air supply direction is deflected into oblique air inlet through hollow shaft by grid pressure,
The air-flow angle of attack for causing to blow on flabellum leading edge and suction surface is very big, and vortex is produced on pressure face, so that the sound of circulation fan
Matter is very poor, and buzz is obvious.Simultaneously in order to reach better circulating effect, needs to improve the revolving speed of flabellum, make an uproar to increase
Sound value.Wherein, the direction of rotation of the flabellum in Fig. 3 is counterclockwise, and it is that the direction of rotation of flabellum is cut that solid arrow in Fig. 3, which refers to,
Line 5.
Utility model content
The main purpose of the utility model is to provide a kind of air-inlet grille and fans, to solve in the prior art because of radial direction
Straight line where the cross section long side of rib causes to blow to the air-flow on flabellum leading edge and suction surface by the central axis of flabellum
The problem that the angle of attack makes greatly the sound quality of circulation fan very poor very much.
To achieve the above object, the utility model provides a kind of air-inlet grille, comprising: multiple muscle to radially distribute
Item, rib have spoke portion and towards flabellum direction extend extension, extension along perpendicular to flabellum shaft cross section,
The tangent line of long scale inclines relative to plane determined by the endpoint of close flabellum shaft and the axis of flabellum shaft with long scale
Tiltedly and tilt angle A is in the range of 1 °~89 °.
Further, tilt angle A is in the range of 5 °~60 °.
Further, the tilt angle A of tangent line of the long scale at the endpoint of flabellum shaft is along the direction far from flabellum
It is gradually reduced.
Further, long scale is linearly or arc-shaped.
Further, rib is equal thickness plate.
Further, the edge of extension is airfoil perpendicular to the cross section of flabellum shaft.
Further, rib is along spiral extension.
Further, spoke portion has tilt angle identical with extension.
Further, air-inlet grille further includes the annular rib being all connected with multiple ribs.
The utility model also provides a kind of fan, comprising: air-inlet grille, air-inlet grille are above-mentioned air-inlet grille.
Technical solutions of the utility model have the advantages that the length along the cross section perpendicular to flabellum shaft of extension
The tangent line of scale is tilted relative to plane determined by the endpoint of close flabellum shaft and the axis of flabellum shaft with long scale
And tilt angle A is in the range of 1 °~89 °, so that inclined direction passes through rib towards the direction of rotation of flabellum, air-flow
Extension carry out deflection of prewhirling, and then the air-flow for being sent into flabellum can be made to generate a positive deflection in advance, so that air inlet
The angle of attack is reduced, and reduces the Shedding Vortex of flabellum, and sound quality is improved, and increases air supplying distance under same revolving speed, with changing under torque
Kind sound quality.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.In the accompanying drawings:
Fig. 1 shows the schematic cross-sectional view of circulation fan in the prior art；
Fig. 2 shows the schematic diagrames of the air-inlet grille of the circulation fan of Fig. 1；
Fig. 3 shows the simple schematic diagram of the cross section of a rib of the air-inlet grille of Fig. 2 and the direction of rotation of flabellum；
Fig. 4 shows the emulation schematic diagram of the air-supply effect of the circulation fan of Fig. 1；
Fig. 5 shows the schematic front view of the embodiment one of air-inlet grille according to the present utility model；
Fig. 6 shows the schematic cross-section at the close flabellum of the air-inlet grille of Fig. 5；
Fig. 7 shows enlarged diagram at the B of the air-inlet grille of Fig. 6；
Fig. 8 shows the simple signal of the intermediate cross-section of the air-inlet grille of Fig. 7 and the direction of rotation of flabellum, airintake direction
Figure；
Fig. 9 shows cross section and the flabellum of a rib of the embodiment two of air-inlet grille according to the present utility model
Direction of rotation, airintake direction simple schematic diagram；
Figure 10 shows cross section and the flabellum of a rib of the embodiment three of air-inlet grille according to the present utility model
Direction of rotation, airintake direction simple schematic diagram；
Figure 11 shows the schematic front view of the example IV of air-inlet grille according to the present utility model；
Figure 12 shows the emulation schematic diagram of the air-supply effect of circulation fan according to the present utility model.
Wherein, the appended drawing reference in above-mentioned attached drawing are as follows:
1, radial ribs；2, ventilating duct；3, flabellum；4, long side；5, tangent line；10, rib；11, long scale；20, tangent line；
30, annular rib.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
Embodiment one
As shown in Figures 5 to 7, the air-inlet grille of the present embodiment includes: multiple ribs 10 to radially distribute, rib 10
The extension that direction with spoke portion and towards flabellum extends, extension is along the cross section perpendicular to flabellum shaft, long scale
11 tangent line is tilted relative to plane determined by the endpoint of close flabellum shaft and the axis of flabellum shaft with long scale 11
And tilt angle A is in the range of 1 °~89 °.Wherein, the direction of rotation of the flabellum in Fig. 8 is counterclockwise, the solid line arrow in Fig. 8
Head refers to the tangent line 20 of the direction of rotation of flabellum, and dotted arrow instruction is airintake direction.
Using the air-inlet grille of the present embodiment, the long scale 11 along the cross section perpendicular to flabellum shaft of extension is cut
Line is tilted and is tilted relative to plane determined by the endpoint of close flabellum shaft and the axis of flabellum shaft with long scale 11
Angle A is in the range of 1 °~89 °, so that the extension that inclined direction passes through rib towards the direction of rotation of flabellum, air-flow
Portion carries out deflection of prewhirling, and then the air-flow for being sent into flabellum can be made to generate a positive deflection in advance, so that the air inlet angle of attack subtracts
It is few, the Shedding Vortex of flabellum is reduced, sound quality is improved, and increases air supplying distance under same revolving speed, with improving sound quality under torque.
Preferably, tilt angle A has certain pre- swirl effect and is conducive to depanning in the range of 5 °~60 ° within the scope of this,
It will not excessive deflection.
In the present embodiment, as shown in Figure 7 and Figure 8, long scale 11 is linearly, facilitates processing, reduces manufacture difficulty.?
In the present embodiment, rib 10 is equal thickness plate, convenient for manufacture, reduces manufacturing cost.Certainly, the distance between two long scales
It can be gradually reduced along the direction close to flabellum shaft, i.e., rib is not equal thickness plate.
In the present embodiment, as shown in figure 5, spoke portion has tilt angle identical with extension, air-flow is by rib
Spoke portion carries out deflection of prewhirling, and enables to the air inlet angle of attack to reduce, reduces the Shedding Vortex of flabellum, sound quality is improved, above-mentioned air inlet
Grid is compared with air-inlet grille in the prior art, increases air supplying distance under same revolving speed, with improving sound quality under torque.
In the present embodiment, air-inlet grille further includes the annular rib 30 being all connected with multiple ribs 10, annular rib 30
The intensity for strengthening air-inlet grille, prevents air-inlet grille from deforming under the effect of external force.
In the present embodiment, spoke portion the radially extending along flabellum shaft of rib 10.
By an angle of the tilt angle of air-inlet grille in the prior art and embodiment one inside 5 °~60 ° ranges
Air-inlet grille carry out experimental test, test data is as shown in table 1 below.
Table 1
As it can be seen from table 1 the air-inlet grille of embodiment one can be reduced in air-inlet grille revolving speed than in the prior art
Flow improves 10.4% in the case where 35rpm, and corresponding noise peak also decreases.
Embodiment two
Fig. 9 shows the structure of the embodiment two of the air-inlet grille of the utility model, the air-inlet grille and reality of embodiment two
The difference for applying example one is that the shape of long scale 11 is different.In example 2, long scale 11 is in arc-shaped.
Embodiment three
Figure 10 shows the structure of the embodiment three of the air-inlet grille of the utility model, the air-inlet grille and reality of embodiment three
The difference for applying example one is that the shape of cross section is different.In example 2, the edge of extension is perpendicular to the transversal of flabellum shaft
Face is airfoil.
Example IV
Figure 11 shows the structure of the example IV of the air-inlet grille of the utility model, the air-inlet grille and reality of example IV
The difference for applying example one is that the extending direction of rib is different.In example IV, rib 10 is spiral helicine to prolong along spiral extension
It stretches that direction is consistent with the direction of rotation of flabellum, the radical of rib can be reduced on the basis of keeping grid spacing in this way, increase
Intake.And the radius of curvature of helix is unrestricted.
As interchangeable embodiment, the tilt angle A of tangent line of the long scale at the endpoint of flabellum shaft is along remote
Direction from flabellum is gradually reduced.
The utility model additionally provides a kind of fan, and fan includes: air-inlet grille, and air-inlet grille is above-mentioned air inlet lattice
Grid.In the present embodiment, fan is circulation fan.Figure 12 shows the simulation velocity cloud of the air-supply effect of the circulation fan of the present embodiment
Figure, Fig. 4 show the simulation velocity cloud atlas of the air-supply effect of circulation fan in the prior art, Fig. 4 and Figure 12 are compared, can
Air supplying distance can be effectively increased under same revolving speed obviously to obtain the circulation fan of the present embodiment, improve air quantity.
As interchangeable embodiment, fan may be other fans such as box fan, stand fan, desk fan.
It can be seen from the above description that the above embodiments of the utility model achieve the following technical effects:
Inclined rib can make the air-flow for being sent into flabellum generate a positive deflection in advance, reduce the air inlet angle of attack, reduce
The Shedding Vortex of flabellum improves air supply efficiency, can increase the air quantity inside the ventilating duct by circulation fan under same revolving speed, thus
Increase wind pressure, reach farther air supplying distance, and due to reducing Shedding Vortex, and then improve sound quality, such as keeps air output not
Become, the revolving speed of fan can be reduced, to also reduce noise figure while improving sound quality.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes among the protection scope created still in the utility model.
Claims (10)
1. a kind of air-inlet grille, comprising: multiple ribs (10) to radially distribute, the rib (10) have spoke portion and direction
The extension that the direction of flabellum extends, which is characterized in that the extension is along the cross section perpendicular to flabellum shaft, long scale
(11) tangent line is relative to the close endpoint of the flabellum shaft and the axis of the flabellum shaft of the long scale (11)
Identified plane tilts and tilt angle A is in the range of 1 °~89 °.
2. air-inlet grille according to claim 1, which is characterized in that the tilt angle A is in the range of 5 °~60 °.
3. air-inlet grille according to claim 1, which is characterized in that the long scale (11) is close to the flabellum shaft
The tilt angle A of tangent line at endpoint is gradually reduced along the direction far from the flabellum.
4. air-inlet grille according to claim 1, which is characterized in that the long scale (11) is linearly or arc-shaped.
5. air-inlet grille according to claim 4, which is characterized in that the rib (10) is equal thickness plate.
6. air-inlet grille according to claim 1, which is characterized in that cross of the edge of the extension perpendicular to flabellum shaft
Section is airfoil.
7. air-inlet grille according to claim 1, which is characterized in that the rib (10) is along spiral extension.
8. air-inlet grille according to claim 1, which is characterized in that incline with identical with the extension in the spoke portion
Rake angle.
9. air-inlet grille according to any one of claim 1 to 8, which is characterized in that the air-inlet grille further include with
The annular rib (30) that multiple ribs (10) are all connected with.
10. a kind of fan, comprising: air-inlet grille, which is characterized in that the air-inlet grille is any one of claims 1 to 9 institute
The air-inlet grille stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821372252.7U CN208997043U (en) | 2018-08-24 | 2018-08-24 | Air inlet grille and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821372252.7U CN208997043U (en) | 2018-08-24 | 2018-08-24 | Air inlet grille and fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208997043U true CN208997043U (en) | 2019-06-18 |
Family
ID=66798994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821372252.7U Active CN208997043U (en) | 2018-08-24 | 2018-08-24 | Air inlet grille and fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208997043U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139570A (en) * | 2018-08-24 | 2019-01-04 | 珠海格力电器股份有限公司 | Air inlet grille and fan |
-
2018
- 2018-08-24 CN CN201821372252.7U patent/CN208997043U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139570A (en) * | 2018-08-24 | 2019-01-04 | 珠海格力电器股份有限公司 | Air inlet grille and fan |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |