CN102146934A - fan wheel - Google Patents
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- CN102146934A CN102146934A CN 201010108409 CN201010108409A CN102146934A CN 102146934 A CN102146934 A CN 102146934A CN 201010108409 CN201010108409 CN 201010108409 CN 201010108409 A CN201010108409 A CN 201010108409A CN 102146934 A CN102146934 A CN 102146934A
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- guide channel
- lateral margin
- blade
- air
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Abstract
A fan wheel comprises a hub and a plurality of blades, wherein the plurality of blades are arranged on the peripheral surface of the hub. Each blade is provided with a windward surface and a leeward surface, and the periphery of each blade is provided with a windward side edge, an air outlet side edge and a radial end edge which is formed at the free end of the blade. In addition, each blade is provided with at least one guide groove which is arranged on at least one surface of the windward side and the leeward side and is close to the radial end edge. The guiding groove extends from the windward side edge to the air outlet side edge. By means of the arrangement of the guide groove, the lateral overflow of the fan wheel blade is reduced, the vortex effect generated at the radial end edge when the airflow passes through the fan wheel is further reduced, and the running noise is reduced.
Description
Technical field
The present invention is about a kind of impeller, especially in regard to a kind of impeller that can reduce eddy current and reduce the fan running noise.
Background technique
General existing impeller is arranged in the fan assembly, please refer to shown in Figure 1ly, and it discloses a kind of existing impeller 8, and it comprises a wheel hub 81 and several blades 82, and this wheel hub 81 is provided with a rotatingshaft 811, in order to as pivot point.These several blades 82 are equidistantly arranged and are arranged at this wheel hub 81 outer circumferential faces.Respectively this blade 82 has the radially ora terminalis 823 of lateral margin 821, an air-out lateral margin 822 and that facings the wind respectively, when this existing impeller 8 turns round, ambient air can axially be sucked from the lateral margin 821 that facings the wind of this blade 82 respectively, and by after this blade 82 respectively, send via the air-out lateral margin 822 of this blade 82 respectively, reach the purpose of wind dispelling heat radiation whereby.
Please refer to shown in Figure 2ly, because aforementioned existing impeller 8 belongs to a kind of impeller of axial flow fan, respectively this blade 82 is skewed setting to axial, so its wind dispelling direction is to should rotatingshaft 811 be axial the turnover.Yet, when air communication is crossed respectively between this blade 82, the part air-flow easily along the surface lateral of this blade 82 respectively from this radially ora terminalis 823 leak outside, the lateral airflow that causes leaking outside radially produces eddy current and flow perturbation in ora terminalis 823 positions at this easily, and then cause the fan running noise too high, and influence its heat dissipation simultaneously.
In view of this, in order to overcome the shortcoming of above-mentioned existing impeller 8, another existing impeller 9, please refer to shown in Figure 3, TaiWan, China discloses " fan blade flow guide structure " patent of invention No. 200823372, it comprises a wheel hub 91 and several blades 92, and this blade 92 is equidistantly arranged and is arranged at this wheel hub 91 outer circumferential faces, and this blade 92 has the radially ora terminalis 923 of lateral margin 921, an air-out lateral margin 922 and that facings the wind.Should mainly set up a guide plate 93 in these blade 92 surfaces by existing impeller 9, this guide plate 93 is selected a circular arc plate for use, and it is near this ora terminalis 923 radially, and vertical mutually with these blade 92 surfaces.
When existing impeller 9 turns round, ambient air is axially sucked from the lateral margin 921 that facings the wind of this blade 92 respectively, when air communication is crossed respectively these blade 92 surfaces, because of the centrifugal action side direction towards this radially the part air-flows that flow of ora terminalis 923 can be subjected to the backstop of this guide plate 93, flow and be guided towards this air-out lateral margin 922, avoid the air-flow side overflow whereby, with further enhancement wind dispelling usefulness and reduction overall noise.
Yet, trend along with the fan dimension microminiaturization, its fan member size also needs further microminiaturization, owing to should existing impeller 9 main selections being convexly equipped with the situation generation that this guide plate 93 prevents the air-flow side overflow, the set-up mode that causes these guide plate 93 relative these blade 92 surfaces to form projection causes the axial height of this existing impeller 9 to cross high shortcoming on the contrary, fan frame must be reserved appropriate space to size that should guide plate 93, in the time of just avoiding these existing impeller 9 runnings not can and fan frame between interference and collision mutually, it is unfavorable for the making and the application of micro fan really.
Moreover the increase that causes these existing impeller 9 overall weight simultaneously, the particularly increase of impeller weight are set can cause the power consumption of fan assembly to increase simultaneously of this guide plate 93 causes fan assembly to expend the energy more.Again, the setting up of this guide plate 93 also additionally increased the former material of this existing impeller 9 when making expends, and makes fabricating cost improve.For these reasons, aforementioned existing impeller 9 its still have necessity of being improved really.
Summary of the invention
The invention provides a kind of impeller, the eddy current effect that produces at the ora terminalis place when mainly reducing air communication and crossing impeller to reduce running noise, is purpose of the present invention.
The invention provides a kind of impeller, have the lightweight characteristic, can effectively reduce the load of fan running,, be another object of the present invention to reduce the running power consumption.
The invention provides a kind of impeller, can be applicable to help dwindling fan dimension on the microminiaturized fan, be a further object of the present invention.
The invention provides a kind of impeller, effectively reduce and make expending of material,, be a further object of the present invention to reduce production costs.
For reaching aforementioned goal of the invention, technological means that the present invention used and the effect that can reach by this technological means include:
A kind of impeller, it comprises a wheel hub and several blades, and these several blades are arranged at the outer circumferential face of this wheel hub.Respectively this blade has a windward side and a lee face respectively, and respectively this blade periphery is formed with the radially ora terminalis of lateral margin, an air-out lateral margin and that facings the wind, this radially ora terminalis be formed at the free end of this blade.Wherein, respectively this blade is provided with at least one guide channel, and this guide channel is arranged at least one surface of this windward side and lee face, and contiguous this ora terminalis radially, and this guide channel extends towards this air-out lateral margin direction from the lateral margin that should facing the wind and is provided with.
The present invention mainly utilizes this guide channel to reduce the side overflow of impeller blade, to reduce the situation that produces eddy current between this fan frame and this blade end, the maximum noise amount that under characteristic frequency, produces when effectively reducing fan running whereby, and the wind of fan integral body is cut noise.
Description of drawings
Fig. 1: the stereogram of existing impeller.
Fig. 2: the use side-looking and the gas flow schematic representation of existing impeller.
Fig. 3: the stereogram of another existing impeller.
Fig. 4: the stereogram of the impeller of first embodiment of the invention.
Fig. 5: the partial enlarged drawing of the impeller of first embodiment of the invention.
Fig. 6: the impeller blade of first embodiment of the invention is along the sectional view of 6-6 line among Fig. 5.
Fig. 7: the first embodiment of the invention air-flow flows to schematic representation along what the blade lee face flowed.
Fig. 8: the combination that the impeller of first embodiment of the invention is applied on the fan assembly is analysed and observe and the gas flow schematic representation.
Fig. 9: the partial enlarged drawing of the impeller of second embodiment of the invention.
Figure 10: the impeller blade of second embodiment of the invention is along the sectional view of 10-10 line among Fig. 9.
Figure 11: the partial enlarged drawing of the impeller of third embodiment of the invention.
Figure 12: the stereogram of the impeller of fourth embodiment of the invention.
The primary component symbol description:
1 wheel hub, 11 top cover portion, 12 ringwall portions, 13 rotatingshafts
14 containing spaces, 2 blades, 21 windward sides, 22 lee faces
23 radially ora terminalis 26 guide channels of lateral margin 24 air-out lateral margins 25 that facing the wind
26 ' supplemental pilot groove, 7 fan assemblys, 71 fan frames
8 existing impeller 81 wheel hubs 811 rotatingshafts 82 blades
The 821 radially ora terminalis 9 existing impellers of lateral margin 822 air-out lateral margins 823 that facing the wind
91 wheel hubs, 92 blades 921 are lateral margin 922 air-out lateral margins down with the wind
923 ora terminalis 93 guide plates radially
Embodiment
For above-mentioned and other purpose of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and conjunction with figs. are described in detail below:
Please refer to shown in Fig. 4 and 5, the impeller of first embodiment of the invention is mainly used on the fan assembly 7 (as shown in Figure 8), and this fan assembly 7 is preferably axial flow fan, it comprises a wheel hub 1 and several blades 2, this wheel hub 1 generally is hollow cylindrical, these several blades 2 are arranged the outer circumferential face that is arranged at this wheel hub 1, and respectively these blade 2 relative these wheel hubs 1 axially is skewed setting.
This wheel hub 1 is provided with a top cover portion 11, a ringwall portion 12 and a rotatingshaft 13, this ringwall portion 12 is located on the outer periphery of this top cover portion 11, and this top cover portion 11 and ringwall portion 12 one common peripheral are around forming a containing space 14, and this containing space 14 can supply the corresponding assembling of a ring magnet (not indicating) to embed.This rotatingshaft 13 is positioned at this containing space 14, and the corresponding central position that is arranged at this top cover portion 11.
Respectively relative two surfaces of this blade 2 are respectively a windward side 21 and a lee face 22, this windward side 21 is the surface of this blade 2 towards these fan assembly 7 wind inlets (not indicating), and 22 of this lee faces are the surface (please refer to shown in Figure 8) of this blade 2 towards these fan assembly 7 exhaust outlets (not indicating).Again, respectively these blade 2 peripheries are formed with the radially ora terminalis 25 of lateral margin 23, an air-out lateral margin 24 and that facings the wind, should facing the wind lateral margin 23 and air-out lateral margin 24 is formed at the position that this windward side 21 and this lee face 22 are connected mutually respectively, wherein be somebody's turn to do the top cover portion 11 of lateral margin 23 close these wheel hubs 1 that facing the wind, 24 close these ringwall portion 12 bottoms of this air-out lateral margin.This radially ora terminalis 25 be formed at the end of this blade 2 away from this wheel hub 1, and this end also is a free end, this radially the profile of ora terminalis 25 be preferably the design of streamline arc, the wind that produces when reducing these blade 2 runnings is whereby cut noise.
Please refer to shown in Fig. 5 and 6, respectively this blade 2 is provided with at least one guide channel 26 in addition, this guide channel 26 can be selected to be arranged at least one surface of this windward side 21 and lee face 22, and present embodiment is selected this guide channel 26 is arranged at this lee face 22 as implementing the explanation of sample attitude.This guide channel 26 is preferable to facing the wind between lateral margin 23 and this air-out lateral margin 24 at this, and a span is still left with should facing the wind lateral margin 23 and air-out lateral margin 24 in guide channel 26 two ends of present embodiment.Wherein, this guide channel 26 is arranged at diametrically near these ora terminalis 25 places radially, it is provided with direction is to extend towards these air-out lateral margin 24 directions from the lateral margin 23 that should facing the wind, and this guide channel 26 is also corresponding to be arranged at this radially side of ora terminalis 25, and this radially maintains a predetermined spacing between the ora terminalis 25.Again, the guide channel 26 of present embodiment is chosen as an arcuate furrow, and its cross-sectional shape is semicircle arcuation (as shown in Figure 8).
Please refer to shown in Fig. 7 and 8, impeller of the present invention is on this fan assembly 7 during actual the use, rotation along with this impeller, ambient air is inhaled into respectively between this blade 2 via this lateral margin 23 that facings the wind, when air communication is crossed respectively these blade 2 surfaces, the part air-flow can flow towards this air-out lateral margin 24 along the windward side 21 of this blade 2 and the lee face 22 of adjacent blades 2, and directly discharges from the exhaust outlet of this fan assembly 7; Another partly air-flow then can because of the centrifugal action side direction towards this radially ora terminalis 25 flow.Because this lee face 22 is provided with this guide channel 26, make the part air-flow along this windward side 21 towards this radially during ora terminalis 25 lateral flow, lateral airflow can be subjected to the guiding of this guide channel 26 then flow towards this air-out lateral margin 24 along this guide channel 26.Simultaneously, by also forming air-guiding, draw lateral airflow and flow towards this air-out lateral margin 24 along these guide channel 26 airflow flowing.Whereby, avoid air-flow from this radially ora terminalis 25 side overflows leak, and then reduce between fan frame 71 and this blade 2 of this fan assembly 7 and produce eddy current effect, effectively promote wind dispelling usefulness and reduce fan overall operation noise.
Please refer to shown in the table one, it is applied on the axial flow fan at impeller of the present invention and existing impeller 8, and carries out reality and test under the environment of operation of rotating speed 3200rpm and 3700rom.Wherein, as shown in Table 1, with the fan that impeller of the present invention is tested, it is that 3200rpm and frequency can produce 21.53 decibels maximum noise amount during for 372Hz at rotating speed; And, be that 3700rpm and frequency can produce 19.28 decibels maximum noise amount during for 431Hz at rotating speed.
Review, with the fan that existing impeller 8 is tested, it is that 3200rpm and frequency can produce 26.13 decibels maximum noise amount during for 373Hz at rotating speed; And, be that 3700rpm and frequency can produce 26.70 decibels maximum noise amount during for 432Hz at rotating speed.In comparison, the maximum noise that produced when rotating speed is 3200rpm of the existing relatively impeller 8 of impeller of the present invention has effectively reduced by 4.6 decibels (having reduced 16.7% approximately); And the maximum noise that is produced when rotating speed is 3700rpm has more significantly reduced by 7.42 decibels (having reduced 27.8% approximately).
Table one, existing impeller and the actual noise test result that is used in axial flow fan of impeller of the present invention.
Major technique characteristics of the present invention are: by this at least one guide channel 26 is set at least one surface of the windward side 21 of this blade 2 and lee face 22, and this guide channel 26 is near this ora terminalis radially, to utilize these guide channel 26 guiding lateral airflow then flow towards this air-out lateral margin 24.Whereby, avoid air-flow from these ora terminalis 25 side overflows radially, reduce the eddy current effect that produces between this fan frame 71 and this blade 2, make impeller of the present invention can effectively reduce the maximum noise amount that under characteristic frequency, produces when this fan assembly 7 turns round, and the wind of fan integral body is cut noise.
Again, because the windward side 21 or the lee face 22 of these guide channel 26 relative these blades 2 are invaginated type, make that the overall volume of impeller of the present invention is reduced, and then be able to relatively existing impeller 8,9 lightweights more, to reduce the load of fan running, reach energy saving whereby and reduce the purpose that former material expends.
Moreover, this windward side 21 or lee face 22 are the axial height that the recessed guide channel 26 that is provided with can't additionally increase impeller relatively, make the required ccontaining and rotation space of impeller of the present invention to minimize, it helps the miniaturized design of this fan assembly 7.
Please refer to shown in Fig. 9 and 10, it discloses the impeller of second embodiment of the invention, compared to first embodiment, connection lateral margin 23 and air-out lateral margin 24 are down with the wind run through in the two ends of second embodiment's guide channel 26, facing the wind lateral margin 23 via this when being inhaled into respectively between this blade 2 when ambient air whereby, the part air-flow is able to directly enter in this guide channel 26 via this lateral margin 23 that facings the wind, and it is mobile towards this air-out lateral margin 24, the concave design that self forms by the air-flow in this guide channel 26 and guide channel 26 is guided towards this lateral airflow of flowing of ora terminalis 25 radially, allow lateral airflow flow towards this air-out lateral margin 24 along this guide channel 26, reduce lateral airflow from this radially ora terminalis 25 leak, avoid producing eddy current effect between this fan frame 71 and this blade 2, further reduce fan overall operation noise.
Please refer to shown in Figure 11, it discloses the impeller of third embodiment of the invention, compared to first embodiment, respectively this lee face 22 of the 3rd embodiment is provided with a guide channel 26 and a supplemental pilot groove 26 ', this guide channel 26 is arranged at this radially between ora terminalis 25 and the supplemental pilot groove 26 ', wherein the structure form of this guide channel 26 is approximately identical to the guide channel 26 among first embodiment, gives unnecessary details no longer in detail in this.In addition, this supplemental pilot groove 26 ' is set up in parallel in these supplemental pilot groove 26 1 sides, and this supplemental pilot groove 26 ' direction and contour shape are set similar in appearance to this guide channel 26.
In addition, a span is also left with should facing the wind lateral margin 23 and air-out lateral margin 24 in the two ends of this supplemental pilot groove 26 ', but because the span that the length of this guide channel 26 greater than the length of this supplemental pilot groove 26 ', makes these supplemental pilot groove 26 ' two ends be somebody's turn to do relatively facings the wind between lateral margin 23 and the air-out lateral margin 24 is greater than the relative span that should facing the wind between lateral margin 23 and the air-out lateral margin 24 in these guide channel 26 two ends.
Present embodiment is by radially being provided with this guide channel 26 and supplemental pilot groove 26 ' side by side in ora terminalis 25 places at this lee face 22 near this, make the continuous backstop and the guiding that can be subjected to this guide channel 26 and supplemental pilot groove 26 ' along the part air-flow of these lee face 22 lateral flow when the lateral flow in regular turn, then flow towards this air-out lateral margin 24, further guarantee lateral airflow not can from this radially ora terminalis 25 side overflows leak, reduce between this fan frame 71 and this blade 2 situation that produces eddy current, the strong wind that reduces whereby that this fan assembly 7 produces under characteristic frequency is cut noise and overall operation noise content.
Please refer to shown in Figure 12, it discloses the impeller of fourth embodiment of the invention, compared to first embodiment, the 4th embodiment's water conservancy diversion groove 26 selects to be arranged at the windward side 21 of this blade 2, wherein this guide channel 26 is arranged at this and facings the wind between lateral margin 23 and this air-out lateral margin 24, and be positioned at diametrically near these ora terminalis 25 places radially, its structure form is approximately identical to the guide channel 26 among first embodiment, gives unnecessary details no longer in detail in this.
The guide channel 26 of present embodiment is arranged at this windward side 21, and it still can reach the effect that is same as first embodiment of the invention, can further reduce the eddy current effect that produces between this fan frame 71 and this blade 2, to reduce fan overall operation noise.In sum, no matter guide channel 26 of the present invention selects to be separately set in the respectively windward side 21 or the lee face 22 of this blade 2, perhaps be arranged at simultaneously on this windward side 21 and the lee face 22, even only change the quantity that is provided with of this guide channel 26, all belong to technology category of the present invention, it is not subject to many use sample attitudes of previous embodiment.
Claims (18)
1. impeller is characterized in that comprising:
A wheel hub; Has a ringwall portion; And
Several blades, be arranged at this ringwall portion outer circumferential face, respectively this blade has a windward side and a lee face, and respectively this blade periphery is formed with radially ora terminalis of the lateral margin that facings the wind, air-out lateral margin and, this radially ora terminalis be formed at the end of this blade away from this wheel hub;
Wherein respectively this blade is provided with at least one guide channel, and this guide channel is arranged at least one surface of this windward side and lee face, and contiguous this ora terminalis radially, and this guide channel extends towards this air-out lateral margin direction from the lateral margin that should facing the wind and is provided with.
2. according to the described impeller of claim 1, it is characterized in that this guide channel windward side or lee face of this blade relatively is invaginated type.
3. according to claim 1 or 2 described impellers, it is characterized in that this guide channel is arranged at this and facings the wind between lateral margin and this air-out lateral margin, and a spacer segment distance is left with this facing the wind lateral margin and air-out lateral margin respectively in these guide channel two ends.
4. according to claim 1 or 2 described impellers, it is characterized in that these guide channel two ends are communicated with the facing the wind lateral margin and the air-out lateral margin of this blade.
5. according to claim 1 or 2 described impellers, it is characterized in that this guide channel is arranged at this radially side of ora terminalis, and this guide channel and this radially maintain spacing between the ora terminalis.
6. according to claim 1 or 2 described impellers, it is characterized in that this guide channel is an arcuate furrow, its cross-sectional shape is the semicircle arcuation.
7. according to the described impeller of claim 2, it is characterized in that this blade is provided with a supplemental pilot groove in addition, this guide channel is arranged at this radially between ora terminalis and the supplemental pilot groove.
8. according to the described impeller of claim 7, it is characterized in that this guide channel and supplemental pilot groove are set up in parallel in this windward side or lee face.
9. according to claim 7 or 8 described impellers, it is characterized in that this guide channel and supplemental pilot groove facing the wind between lateral margin and this air-out lateral margin at this, and the length of this guide channel is greater than the length of this supplemental pilot groove.
10. an impeller comprises a wheel hub and several blades, and this blade lean is arranged at the outer circumferential face of this wheel hub, and respectively this blade has radially ora terminalis of a windward side, lee face and, it is characterized in that:
Respectively this blade is provided with at least one guide channel, and this guide channel is arranged at least one surface of this windward side and lee face, and this guide channel is near this ora terminalis radially, and this guide channel this windward side or lee face relatively is invaginated type.
11., it is characterized in that respectively this blade periphery is formed with facing the wind a lateral margin and an air-out lateral margin in addition according to the described impeller of claim 10, this guide channel is provided with towards this air-out lateral margin direction extension from the lateral margin that should facing the wind.
12., it is characterized in that this guide channel is arranged at this and facings the wind between lateral margin and this air-out lateral margin according to the described impeller of claim 11, and a spacer segment distance is left with this facing the wind lateral margin and air-out lateral margin respectively in these guide channel two ends.
13., it is characterized in that these guide channel two ends are communicated with the facing the wind lateral margin and the air-out lateral margin of this blade according to claim 11 a described impeller.
14., it is characterized in that this guide channel is arranged at this radially side of ora terminalis according to claim 10,11,12 or 13 described impellers, and this guide channel and this radially maintain spacing between the ora terminalis.
15., it is characterized in that this guide channel is an arcuate furrow according to claim 10,11,12 or 13 described impellers, its cross-sectional shape is the semicircle arcuation.
16., it is characterized in that this flabellum is provided with a supplemental pilot groove in addition according to the described impeller of claim 11, this guide channel is arranged at this radially between ora terminalis and the supplemental pilot groove.
17., it is characterized in that this guide channel and supplemental pilot groove are set up in parallel in this windward side or lee face according to the described impeller of claim 16.
18., it is characterized in that this guide channel and supplemental pilot groove facing the wind between lateral margin and this air-out lateral margin at this, and the length of this guide channel is greater than the length of this supplemental pilot groove according to claim 16 or 17 described impellers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010108409 CN102146934A (en) | 2010-02-10 | 2010-02-10 | fan wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010108409 CN102146934A (en) | 2010-02-10 | 2010-02-10 | fan wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102146934A true CN102146934A (en) | 2011-08-10 |
Family
ID=44421354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010108409 Pending CN102146934A (en) | 2010-02-10 | 2010-02-10 | fan wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102146934A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014185551A (en) * | 2013-03-22 | 2014-10-02 | Mitsubishi Heavy Ind Ltd | Propeller fan |
| CN104329276A (en) * | 2014-11-28 | 2015-02-04 | 德清振达电气有限公司 | Efficient mute axial flow fan |
| CN107542699A (en) * | 2017-09-04 | 2018-01-05 | 珠海格力电器股份有限公司 | Centrifugal fan blade, centrifugal fan and manufacturing method of centrifugal fan blade |
| CN114876828A (en) * | 2021-02-05 | 2022-08-09 | 全亿大科技（佛山）有限公司 | Fan with cooling device |
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| JP2003254294A (en) * | 2002-03-01 | 2003-09-10 | Nippon Densan Corp | Axial fan motor |
| JP2005133683A (en) * | 2003-10-31 | 2005-05-26 | Matsushita Electric Ind Co Ltd | Blower impeller |
| CN200985903Y (en) * | 2006-12-13 | 2007-12-05 | 青岛海信空调有限公司 | Tube-axial fan |
| JP2008184999A (en) * | 2007-01-31 | 2008-08-14 | Matsushita Electric Ind Co Ltd | Blower impeller |
| CN201218235Y (en) * | 2008-07-09 | 2009-04-08 | 元山科技工业股份有限公司 | Fan blade device of heat radiation fan |
| KR20090132786A (en) * | 2008-06-23 | 2009-12-31 | 이용삼 | Propeller fan |
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2010
- 2010-02-10 CN CN 201010108409 patent/CN102146934A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003254294A (en) * | 2002-03-01 | 2003-09-10 | Nippon Densan Corp | Axial fan motor |
| JP2005133683A (en) * | 2003-10-31 | 2005-05-26 | Matsushita Electric Ind Co Ltd | Blower impeller |
| CN200985903Y (en) * | 2006-12-13 | 2007-12-05 | 青岛海信空调有限公司 | Tube-axial fan |
| JP2008184999A (en) * | 2007-01-31 | 2008-08-14 | Matsushita Electric Ind Co Ltd | Blower impeller |
| KR20090132786A (en) * | 2008-06-23 | 2009-12-31 | 이용삼 | Propeller fan |
| CN201218235Y (en) * | 2008-07-09 | 2009-04-08 | 元山科技工业股份有限公司 | Fan blade device of heat radiation fan |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014185551A (en) * | 2013-03-22 | 2014-10-02 | Mitsubishi Heavy Ind Ltd | Propeller fan |
| CN104329276A (en) * | 2014-11-28 | 2015-02-04 | 德清振达电气有限公司 | Efficient mute axial flow fan |
| CN107542699A (en) * | 2017-09-04 | 2018-01-05 | 珠海格力电器股份有限公司 | Centrifugal fan blade, centrifugal fan and manufacturing method of centrifugal fan blade |
| CN114876828A (en) * | 2021-02-05 | 2022-08-09 | 全亿大科技（佛山）有限公司 | Fan with cooling device |
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Application publication date: 20110810 |