CN109139570A - Air inlet grille and fan - Google Patents
Air inlet grille and fan Download PDFInfo
- Publication number
- CN109139570A CN109139570A CN201810974730.XA CN201810974730A CN109139570A CN 109139570 A CN109139570 A CN 109139570A CN 201810974730 A CN201810974730 A CN 201810974730A CN 109139570 A CN109139570 A CN 109139570A
- Authority
- CN
- China
- Prior art keywords
- air
- inlet grille
- flabellum
- rib
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 241000883990 Flabellum Species 0.000 claims description 58
- 241000668842 Lepidosaphes gloverii Species 0.000 claims description 19
- 230000000694 effects Effects 0.000 description 8
- 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
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides an air-inlet grille and a fan, wherein the air-inlet grille comprises: 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 technical scheme of the invention effectively solves the problem that the sound quality of the circulating fan is poor because the attack angle of the airflow blown to the front edge of the fan blade and the suction surface is very large because the straight line of the long side of the cross section of the radial rib passes through the central axis of the fan blade in the prior art.
Description
Technical field
The present invention 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.
Summary of the invention
The main purpose of the present invention is to provide a kind of air-inlet grille and fans, to solve in the prior art because of radial ribs
Cross section long side where straight line lead to blow to the air-flow angle of attack on flabellum leading edge and suction surface by the central axis of flabellum
The problem for making the sound quality of circulation fan very poor greatly very much.
To achieve the above object, the present invention provides a kind of air-inlet grilles, comprising: multiple ribs to radially distribute,
The extension that there is rib spoke portion and the direction towards flabellum to extend, extension is along the cross section perpendicular to flabellum shaft, length
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 °.
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 present invention also provides a kind of fans, comprising: air-inlet grille, air-inlet grille are above-mentioned air-inlet grille.
Technical solution of the present invention has the advantages that the long scale along the cross section perpendicular to flabellum shaft of extension
Tangent line relative to plane determined by the endpoint of close flabellum shaft and the axis of flabellum shaft with long scale tilt and incline
Rake angle A is in the range of 1 °~89 °, so that inclined direction is prolonged towards the direction of rotation of flabellum, air-flow by rib
Extending 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
It reduces, reduces the Shedding Vortex of flabellum, sound quality is improved, and increases air supplying distance under same revolving speed, with improving sound under torque
Matter.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, 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 invention；
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 the cross section of a rib of the embodiment two of air-inlet grille according to the present invention and the rotation of flabellum
Direction, airintake direction simple schematic diagram；
Figure 10 shows the cross section of a rib of the embodiment three of air-inlet grille according to the present invention and the rotation of flabellum
Turn the simple schematic diagram in direction, airintake direction；
Figure 11 shows the schematic front view of the example IV of air-inlet grille according to the present invention；
Figure 12 shows the emulation schematic diagram of the air-supply effect of circulation fan according to the present invention.
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
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
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 air-inlet grille of the invention, the air-inlet grille and embodiment of embodiment two
One difference 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 air-inlet grille of the invention, the air-inlet grille and embodiment of embodiment three
One difference is that the shape of cross section is different.In example 2, the edge of extension is perpendicular to the cross section of flabellum shaft
Airfoil.
Example IV
Figure 11 shows the structure of the example IV of air-inlet grille of the invention, the air-inlet grille and embodiment of example IV
One difference is that the extending direction of rib is different.In example IV, rib 10 is along spiral extension, spiral helicine extension side
To 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, increases air inlet
Amount.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 present invention also provides a kind of fan, fan includes: air-inlet grille, and air-inlet grille is above-mentioned air-inlet grille.?
In the present embodiment, fan is circulation fan.Figure 12 shows the simulation velocity cloud atlas of the air-supply effect of the circulation fan of the present embodiment, figure
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, Ke Yiming
The circulation fan to the present embodiment that seems can effectively increase air supplying distance under same revolving speed, 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 present invention realized the following chievements:
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 still within the protection scope of the invention.
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 |
|---|---|---|---|
| CN201810974730.XA CN109139570A (en) | 2018-08-24 | 2018-08-24 | Air inlet grille and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974730.XA CN109139570A (en) | 2018-08-24 | 2018-08-24 | Air inlet grille and fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109139570A true CN109139570A (en) | 2019-01-04 |
Family
ID=64827936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810974730.XA Pending CN109139570A (en) | 2018-08-24 | 2018-08-24 | Air inlet grille and fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109139570A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622992A (en) * | 2019-02-28 | 2020-09-04 | 施耐德电气It公司 | Fan cover |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203431994U (en) * | 2013-08-28 | 2014-02-12 | 珠海格力电器股份有限公司 | Air purifier |
| CN107191415A (en) * | 2017-05-05 | 2017-09-22 | 珠海格力电器股份有限公司 | Grid structure and fan with same |
| CN107842519A (en) * | 2017-11-22 | 2018-03-27 | 江门市西点电器科技有限公司 | A kind of electric fan |
| CN108036433A (en) * | 2018-01-05 | 2018-05-15 | 奥克斯空调股份有限公司 | Fan blade guard, air-supply arrangement and air-conditioning |
| CN208997043U (en) * | 2018-08-24 | 2019-06-18 | 珠海格力电器股份有限公司 | Air inlet grille and fan |
-
2018
- 2018-08-24 CN CN201810974730.XA patent/CN109139570A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203431994U (en) * | 2013-08-28 | 2014-02-12 | 珠海格力电器股份有限公司 | Air purifier |
| CN107191415A (en) * | 2017-05-05 | 2017-09-22 | 珠海格力电器股份有限公司 | Grid structure and fan with same |
| CN107842519A (en) * | 2017-11-22 | 2018-03-27 | 江门市西点电器科技有限公司 | A kind of electric fan |
| CN108036433A (en) * | 2018-01-05 | 2018-05-15 | 奥克斯空调股份有限公司 | Fan blade guard, air-supply arrangement and air-conditioning |
| CN208997043U (en) * | 2018-08-24 | 2019-06-18 | 珠海格力电器股份有限公司 | Air inlet grille and fan |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622992A (en) * | 2019-02-28 | 2020-09-04 | 施耐德电气It公司 | Fan cover |
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