CN100343784C - Fan vane unit of centrifugal fan - Google Patents
Fan vane unit of centrifugal fan Download PDFInfo
- Publication number
- CN100343784C CN100343784C CNB2005100020913A CN200510002091A CN100343784C CN 100343784 C CN100343784 C CN 100343784C CN B2005100020913 A CNB2005100020913 A CN B2005100020913A CN 200510002091 A CN200510002091 A CN 200510002091A CN 100343784 C CN100343784 C CN 100343784C
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- Prior art keywords
- blade part
- blade
- centrifugal fan
- fan
- unit
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- 241000883990 Flabellum Species 0.000 claims description 34
- 239000012530 fluid Substances 0.000 abstract description 24
- 230000000694 effects Effects 0.000 description 10
- 230000005855 radiation Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000002411 adverse Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The present invention relates to a fan vane unit of a centrifugal fan. The present invention at least comprises a wheel hub and a plurality of fan vanes which extend outwards along the circumference of the wheel hub, wherein each fan vane of the fan vanes is provided with a first vane part and a second vane part, and the first vane part and the second vane part are arranged in the axial direction in a connecting mode or a non-connecting mode, which can prevent fluid from overflowing from an air inlet in a countercurrent mode.
Description
Technical field
The present invention is the blade unit of relevant a kind of centrifugal fan, especially refers to a kind of blade structure of centrifugal fan of heat radiation.
Background technology
Taiwan semiconductor and information industry are grown up quite rapid in recent years, wherein more there is multinomial product to occupy rank first, along with the progressive product of science and technology also gradually towards high-performance, high-frequency, high-speed and lightening direction evolution, and chip size is microminiaturized gradually, cause the heat generation density of electronic package more and more higher, and the electronic product that operates under the condition of high temperature is easy to generate wild effect, so the eliminating that can heat appropriate has become one of present research and development of products key of success.
In the past because the computing machine thermal value is little, less demanding to cooling system, present COMPUTER CALCULATION speeds up, powerful, for effectively solving the problem of electronic package heat radiation, and then the heat that electronic package produces taken out of to the casing outside, usually, some cooling mechanisms are installed additional in portion within it, thermopipette (thermosyphon) for example, heat pipe (heat pipe) and heat radiator (heat sink) etc. help electronic package and entire system heat radiation, yet, when considering that economic benefit and heat sinking function have concurrently, the cooling system that is constituted by fan (fan) collocation heat radiator (heat sink), can be accepted by general user, blast fan drives via propulsion system and converts electrical energy into mechanical energy, energy causes gas flow by the transmission of blade, in order to increase the convection coefficient in the space, and utilize pressure variation and speed to increase flowing of being produced, directly heat is taken away and reached the purpose of heat radiation from heat radiator, but, in order to promote the heat dissipation capacity of cooling system in limited usage space, the design of fan just becomes important research project.
And general the most often use the fan in heat radiation to be axial-flow type and centrifugal two kinds, wherein its gas flow direction of centrifugal fan is radially, or it is square with the axis, during wheel rotation, gas is entered by the impeller center, action of centrifugal force by gas itself obtains energy, because gas is to do radial outflow along blade, so the shape of blade can influence the performance of whole blower fan, so, form according to its blade can be divided into (a) back flexure type, (b) radial mode and (c) three kinds on front curve type etc., and because the blast of centrifugal fan is higher, so be usually used in the bigger system of resistance, again because the flow field in the centrifugal fan is very complicated, after fluid enters the impeller center, turn round radially with impeller, so fluid can produce reflux (recirculation) in impeller, the phenomenon of adverse current (reversed flow) and fluid separation (separation), make the flow field in the impeller become complicated, therefore, how improving these problems, is the target that present research institute pays attention to promote radiating effect.
See also Fig. 1, Fig. 2 blade structure for general prior art centrifugal fan, it has a wheel hub 11 and several outward extending flabellum 12 around the wheel hub 11, these flabellums 12 are radial being formed at around the wheel hub, and changed in the radial direction of these flabellums 12, for example flabellum 12 is near a side of wheel hub 11, and promptly this flabellum is to be flat (as shown in Figure 1); Perhaps to the end near the outside, court radially bends (as shown in Figure 2) flabellum 12 completely by an end of wheel hub 11.
The continuous Fig. 3 that consults, Fig. 4, Fig. 5 is hubbed at the interior synoptic diagram of housing for this fan, it includes a upper shell 13 and a lower house 14 as shown in the figure, wherein this upper shell 13 is offered first open-work 131 in its surface, this lower house 14 is offered second open-work 141 in its surface, and this upper shell 13 and lower house 14 capable of being combined being integral, and and then define a volute runner 15 to be installed with this wheel hub 11 and these flabellums 12, and a side of this upper shell 13 and lower house 14 is formed with an outlet 16 and is communicated with this volute runner 15, when this wheel hub 11 and 12 rotations of these flabellums, and then suction fluid, promptly this fluid is entered by first open-work 131 and second open-work 141 respectively, and the power of rotation makes the suitable flabellum 12 of fluid after external radiation, blows out towards outlet 16 along this volute runner 15 again.
Yet, above-mentioned these flabellum 12 its axial directions are linear, when sucking fluid, be identical at first open- work 131 and 141 blast that can produce of second open-work, but, its problem place is arranged in practical application, when this fluid is flowed into by first open-work 131 and second open-work 141, because the inflow condition difference (for example second open-work, 141 places are provided with several ribs) of first open-work 131 and second open-work 141, when the impedance at outlet 16 places is slightly high, fluid can not flowed out by outlet 16 fully, and these some fluids of failing to flow out can be gone out by first open-work 131 or second open-work, 141 adverse currents, so not only reduce the Fluid Volume of the inflow at first open-work 131 or second open-work, 141 places, and the fluid of adverse current also can produce bump and the noise of increase fan with the fluid that flows into.
Summary of the invention
Therefore, for effectively addressing the above problem, to several flabellums are set, its each flabellum is divided into first blade part and second blade part at the fan hub peripheral shaft in the present invention, with the feed pressure of control different fluid inflow place, and then be added to air quantity and reduce the characteristic of noise.
For reaching the blade unit of above-mentioned purpose centrifugal fan of the present invention, at least include a wheel hub and several and be connected in flabellum around this wheel hub, its each flabellum is divided into first blade part and second blade part, and this first blade part and second blade be optional each other to be and not to be connected shape, to be and to connect shape or part and be and connect shape and part is and does not connect shape.
And this first blade part and second blade part are to be axial setting; The quantity of first blade part and second blade part can be identical or different; Its thickness can be identical or different; It radially bends angle can be identical or different; It radially bends direction can be identical or different.
Characteristic on above-mentioned purpose of the present invention and structure thereof and the function will be illustrated according to preferred embodiment shown in the drawings, with more deep understanding.
Description of drawings
Fig. 1 is first kind of blade structure synoptic diagram of general prior art centrifugal fan;
Fig. 2 is second kind of blade structure synoptic diagram of general prior art centrifugal fan;
Fig. 3 is applied to the interior decomposing schematic representation of lower house for general prior art centrifugal fan;
Fig. 4 makes up synoptic diagram for the solid that general prior art centrifugal fan is applied in the lower house;
Fig. 5 is the cross-sectional schematic of the 4th figure;
Fig. 6 is the schematic perspective view of the present invention's first preferred embodiment;
Fig. 7 is the schematic top plan view of the present invention's first preferred embodiment;
Fig. 8 is applied to the decomposing schematic representation of lower house for the present invention's first preferred embodiment;
Fig. 9 is applied to the combination synoptic diagram of lower house for the present invention's first preferred embodiment;
Figure 10 is applied to the cross-sectional schematic of lower house for the present invention's first preferred embodiment;
Figure 11 is first blade part of the present invention's first preferred embodiment and another aspect schematic top plan view of second blade part;
Figure 12 is first blade part of the present invention's first preferred embodiment and another aspect schematic top plan view again of second blade part;
Figure 13 is the schematic perspective view of the present invention's second preferred embodiment;
Figure 14 is first blade part of the present invention's second preferred embodiment and the cross-sectional schematic of second blade part;
Figure 15 is first blade part of the present invention's second preferred embodiment and the cross-sectional schematic of second another style of blade part;
Figure 16 is first blade part of the present invention's second preferred embodiment and second blade part cross-sectional schematic of a style again;
Figure 17 is the schematic perspective view of the present invention's the 3rd preferred embodiment;
Figure 18 is the schematic top plan view of the present invention's the 3rd preferred embodiment.
Drawing reference numeral explanation: 11 wheel hubs; 12 flabellums; 13 upper shells; 131 first open-works; 14 lower houses; 141 second open-works; 15 volute runners; 16 outlets; 21 wheel hubs; 22 flabellums; 221 roots; 222 first blade parts; 223 second blade parts; 23 upper shells; 231 first open-works; 24 lower houses; 241 second open-works; 25 volute runners; 26 outlets; 32 flabellums; 321 roots; 322 first blade parts; 323 second blade parts; 42 flabellums; 421 roots; 422 first blade parts; 423 second blade parts.
Embodiment
The invention provides a kind of blade unit of centrifugal fan, accompanying drawing is preferred embodiment of the present invention, see also Fig. 6, Fig. 7 is the present invention's first preferred embodiment, it includes a wheel hub 21 and several flabellums 22 at least as shown in the figure, these flabellums 22 are connected in around this wheel hub 21, and each flabellum 22 has a root 221 and first blade part 222, second blade part 223, one end of this root 221 is connected in around the wheel hub 21, the other end outwards extends to this first blade part 222 and second blade part 223 respectively, and the quantity of this first blade part 222 and second blade part 223 is identical and be and do not connect shape and axially be provided with in this preferred embodiment, promptly this first blade part 222 and 223 ones in second blade are the arrangement settings that is the upper-lower position relation, and this first blade part 222 radially bend direction and angle of bend is different with this second blade part 223, promptly this first blade part 222 is to be formed between these second blade parts 223 and contiguous second blade part 223 as shown in Figure 7, is forked again.
Please continue to consult Fig. 8, Fig. 9, Figure 10 is hubbed at synoptic diagram in the housing for the present invention, it includes a upper shell 23 and a lower house 24 as shown in the figure, wherein this upper shell 23 is offered first open-work 231 in its surface, this lower house 24 is offered second open-work 241 in its surface, and this upper shell 23 and lower house 24 capable of being combined being integral, and and then define a volute runner 25 to be installed with this wheel hub 21 and these flabellums 22, and a side of this upper shell 23 and lower house 24 is formed with an outlet 26 and is communicated with this volute runner 25, when this wheel hub 21 and 22 rotations of these flabellums, and then suction fluid, promptly this fluid is entered by first open-work 231 and second open-work 241 respectively, behind each flabellum 22 and the runner between the contiguous flabellum 22 by these several flabellums 22, utilize the power of rotation to make suitable each flabellum 22 of fluid to external radiation, blow out towards outlet along this volute runner 25 again, and between fluid is respectively by first open-work 231 and second open-work, 241 inflow flabellums 22 and flabellum 22, first blade part 222 and 223 one-tenth axial upper and lower settings of second blade part by this flabellum 22, and this first blade part 222 is to be formed between these second blade parts 223 and contiguous second blade part 223, to prevent impedance increase because of this outlet 26, cause the segment fluid flow between each runner to produce adverse current towards first open- work 231 or 241 outflows of second open-work, improve prior art and overflow the disadvantage that causes fluid flow to reduce, also have the characteristic of minimizing because of fluid with the noise of the fluid impact generation of inflow of adverse current because of fluid countercurrent current.
Described again first blade part 222 and second blade part 223, its quantity can (as shown in figure 11) inequality, its thickness can identical or inequality (not shown), and its direction that radially bends (as shown in figure 12) and angle (not shown) can be identical, also can reach above-mentioned effect and effect.
See also Figure 13, Figure 14, Figure 15, shown in Figure 16, be the present invention's second preferred embodiment, its one-piece construction is roughly identical with last embodiment with function and enforcement kenel, promptly do not give unnecessary details same structure effect and symbolic representation thereof at this, its root 321 outward extending first blade parts 322 and second blade part 323 that does not exist together for these several flabellums 32 is to be the connection shape in this preferred embodiment.
The cut-open view of this first blade part 322 and second blade part 323 can be two opposite triangular shaft and to connecting (as shown in figure 15) is set in addition, or is that two opposite arc shafts are provided with (as shown in figure 16) to connecting, and can reach above-mentioned effect and effect.
See also Figure 17, shown in Figure 180, be the present invention's the 3rd preferred embodiment, its one-piece construction is roughly identical with last embodiment with function and embodiment, promptly do not give unnecessary details same structure effect and symbolic representation thereof at this, its do not exist together for root 421 outward extending first blade parts 422 of these several flabellums 42 and second blade part 423 be that part is the connection shape, part is and does not connect shape and forked, also can reach the effect and the effect of the foregoing description.
The above only is preferable feasible embodiment of the present invention, and the variation that above-mentioned method, shape, structure, the device of all the present invention of utilization done all should be contained in the interest field of the present invention.
Claims (13)
1, a kind of blade unit of centrifugal fan is characterized in that: comprise at least:
One wheel hub;
Several flabellums, be to be connected in around this wheel hub, its each flabellum is divided into a root, first blade part and second blade part, and an end of described root is connected around the described wheel hub, and the other end is outwards to extend respectively to be provided with described first blade part and second blade part.
2, the blade unit of centrifugal fan as claimed in claim 1 is characterized in that: this first blade part is each other with second blade part and is not connected shape.
3, the blade unit of centrifugal fan as claimed in claim 1 is characterized in that: this first blade part is each other with second blade part and is connected shape.
4, the blade unit of centrifugal fan as claimed in claim 1 is characterized in that: this first blade part and second blade part partly are and are connected shape and part is and does not connect shape.
5, as the blade unit of each described centrifugal fan of claim 1-4, it is characterized in that: this first blade part and second blade part are to be axial setting.
6, as the blade unit of each described centrifugal fan of claim 1-4, it is characterized in that: the quantity of this first blade part and second blade part is identical.
7, as the blade unit of each described centrifugal fan of claim 1-4, it is characterized in that: the quantity difference of this first blade part and second blade part.
8, as the blade unit of each described centrifugal fan of claim 1-4, it is characterized in that: the thickness of this first blade part and second blade part is identical.
9, as the blade unit of each described centrifugal fan of claim 1-4, it is characterized in that: the thickness difference of this first blade part and second blade part.
10, as the blade unit of each described centrifugal fan of claim 1-4, it is characterized in that: this first blade part and second blade part to radially bend angle identical.
11, as the blade unit of each described centrifugal fan of claim 1-4, it is characterized in that: this first blade part and second blade part to radially bend angle inequality.
12, as the blade unit of each described centrifugal fan of claim 1-4, it is characterized in that: this first blade part and second blade part radially bend the direction difference.
13, as the blade unit of each described centrifugal fan of claim 1-4, it is characterized in that: this first blade part and second blade part to radially bend direction identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100020913A CN100343784C (en) | 2005-01-14 | 2005-01-14 | Fan vane unit of centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100020913A CN100343784C (en) | 2005-01-14 | 2005-01-14 | Fan vane unit of centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1804755A CN1804755A (en) | 2006-07-19 |
| CN100343784C true CN100343784C (en) | 2007-10-17 |
Family
ID=36866806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100020913A Expired - Fee Related CN100343784C (en) | 2005-01-14 | 2005-01-14 | Fan vane unit of centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100343784C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555887B (en) | 2008-04-11 | 2012-07-25 | 富准精密工业(深圳)有限公司 | Fan blade structure of centrifugal fan |
| CN105786142B (en) * | 2016-03-28 | 2019-11-26 | 联想(北京)有限公司 | A kind of fan and electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2450417Y (en) * | 2000-11-02 | 2001-09-26 | 庄文豪 | Double-action radiating fan |
| CN2471987Y (en) * | 2001-04-05 | 2002-01-16 | 台达电子工业股份有限公司 | Centrifugal fun |
| US6599085B2 (en) * | 2001-08-31 | 2003-07-29 | Siemens Automotive, Inc. | Low tone axial fan structure |
| CN2615394Y (en) * | 2003-04-02 | 2004-05-12 | 李森墉 | Double-indrawing centrifugal computerized fan |
| CN2658442Y (en) * | 2003-07-03 | 2004-11-24 | 奇鋐科技股份有限公司 | Centrifugal fan radiation module |
| CN2658441Y (en) * | 2003-07-17 | 2004-11-24 | 台达电子工业股份有限公司 | Blade |
-
2005
- 2005-01-14 CN CNB2005100020913A patent/CN100343784C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2450417Y (en) * | 2000-11-02 | 2001-09-26 | 庄文豪 | Double-action radiating fan |
| CN2471987Y (en) * | 2001-04-05 | 2002-01-16 | 台达电子工业股份有限公司 | Centrifugal fun |
| US6599085B2 (en) * | 2001-08-31 | 2003-07-29 | Siemens Automotive, Inc. | Low tone axial fan structure |
| CN2615394Y (en) * | 2003-04-02 | 2004-05-12 | 李森墉 | Double-indrawing centrifugal computerized fan |
| CN2658442Y (en) * | 2003-07-03 | 2004-11-24 | 奇鋐科技股份有限公司 | Centrifugal fan radiation module |
| CN2658441Y (en) * | 2003-07-17 | 2004-11-24 | 台达电子工业股份有限公司 | Blade |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1804755A (en) | 2006-07-19 |
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