CN100387849C - Centrifugal fan with multilayer impeller - Google Patents
Centrifugal fan with multilayer impeller Download PDFInfo
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- CN100387849C CN100387849C CNB021557535A CN02155753A CN100387849C CN 100387849 C CN100387849 C CN 100387849C CN B021557535 A CNB021557535 A CN B021557535A CN 02155753 A CN02155753 A CN 02155753A CN 100387849 C CN100387849 C CN 100387849C
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- impeller
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- storehouse
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Abstract
The present invention discloses a centrifugal fan having a multi-layer impeller structure, which comprises two driving devices and two impeller structures respectively installed on the two driving devices, wherein vanes on the two impeller structures are mutually stacked. The present invention is characterized in that the two impeller structures are installed in a limited space at the inner part of the centrifugal fan in the radial direction or the axial direction in order to increase the integral heat-radiation effect of the fan.
Description
Technical field
The present invention relates to a kind of centrifugal fan, refer more particularly to a kind of centrifugal fan with multi-layer impeller structure.
Background technique
The fan of heat radiation roughly is divided into two kinds of forms at present: axial flow fan and centrifugal fan, and centrifugal fan generally is useful in the bigger system of flow resistance, because the blast of centrifugal fan is bigger.
No matter how good the centrifugal fan performance is, the trend of present many electronic products is compact, so the volume of radiation fan is subjected to great spatial constraints.
Except the volume of fan, electronic product does not allow fan fails yet, and fan fails may cause systemic breakdown in system's running.Therefore, in order to want protective system, system's meeting stop supplies power supply avoids important assembly to burn because of overheated when fan fails.So some system has installed spare fans additional and has prevented one of them fan fails, but shortcoming be whole fan system certainly will be very huge.
In sum, under the situation of the confined space and volume, the invention that centrifugal fan needs more innovation solves above-mentioned heat dissipation problem.
Summary of the invention
At above-mentioned the deficiencies in the prior art, purpose of the present invention just provides a kind of centrifugal fan with multi-layer impeller structure, in order to increase the efficient of heat radiation.
For achieving the above object, the invention provides a kind of centrifugal fan, its with two blade wheel structures and two combination of drive means in same fan drum, and the blade on the blade wheel structure is arranged storehouse (diameter of the impeller of two storehouses is identical) vertically, and by the axial both sides while inlet air parallel, and by the side direction air-out vertical with the center line of this fan with the center line of this fan.
According to another preferred embodiment of the present invention, in same fan drum, and the blade on the blade wheel structure is radially arranged storehouse (the diameter difference of the impeller of two storehouses) with two blade wheel structures and two combination of drive means.
According to another preferred embodiment of the present invention, with two blade wheel structures and two combination of drive means in same fan drum, and the blade on the blade wheel structure is along the arranged askew storehouse, wherein arranged askew can be divided two kinds again, a kind of is that the diameter of two impellers is identical, and another kind is the diameter difference of two impellers.
From the above, use fan storehouse mode of the present invention and dwindle the fan volume, plural drive unit can be provided, avoid one of them drive unit to lose efficacy, cause the awkward situation of whole fan systemic breakdown.In addition, storehouse mode of the present invention also provides flexible design (mode of the turning to of drive unit, air inlet).The arranged radially storehouse can also produce the effect of multiple pressurization between blade except can dwindling the fan volume.
Brief Description Of Drawings
For above and other objects of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Figure 1A is the fan side cut away view according to a preferred embodiment of the present invention;
Figure 1B is the top plan view of Figure 1A;
Fig. 2 A is the fan side cut away view according to another preferred embodiment of the present invention;
Fig. 2 B is the top plan view of Fig. 2 A;
Fig. 3 A, 3B be in the preferred embodiment of the present invention Blade Design and turn to concern schematic representation; And
Fig. 4 A, 4B, 4C, 4D are the mode schematic representation that blade is arranged storehouse in the preferred embodiment of the present invention.
Embodiment
Dwindle the volume of fan, the method of the most directly expecting is the volume-diminished of blade wheel structure, drive unit (for example motor), shell, but lost efficacy if prevent drive unit, the risk of a drive unit is higher, the mode that embodiments of the invention adopt is that a plurality of centrifugal fans are combined, that is to say, a plurality of drive units 10 and a plurality of blade wheel structure 30 are combined under the same shell that the advantage of this mode is the cost that can dwindle some volumes and save shell.
A plurality of drive units 10 and a plurality of blade wheel structure 30 to be combined under the same shell, and reduced volume, the mode that embodiments of the invention adopt is that a plurality of drive units 10 and a plurality of blade wheel structure 30 storehouses are in the same place, and the mode that reduces volume is the blade storehouse that comes from the blade wheel structure.So how storehouse could reduce more volumes to blade will be emphasis of the present invention.
Please refer to Figure 1A, it is the fan side cut away view according to a preferred embodiment of the present invention.Figure 1B is Figure 1A top plan view.Present embodiment is to arrange storehouse vertically with the blade 20 of two fans, needs between two blades 20 to keep a spacing, and blade can not be run foul of each other when rotating.Shown in Figure 1A, be divided into up and down two figure, top figure represents that the both sides of fan storehouse all leave suction port, makes air to enter in the fan from both sides, can certainly select the monolateral suction port design of following figure.In the design that turns to, present embodiment also can provide fan to turn to identical or the switched in opposite dual mode, shown in Fig. 3 A and 3B, but it is noted that the design of blade, if two impellers turn to identical just with the design of Fig. 3 A, wherein the orientation of the blade on two impellers is parallel.If two fan switched in opposite are just with the designs of Fig. 3 B, wherein on two impellers the time sheet the orientation symmetry.
With reference to Fig. 4 A, it is Figure 1A blade enlarged view partly, and the design partly of this figure blade can provide more flexible variation, as the blade 20 on two impellers of Fig. 4 B with oblique mode storehouse.Design among Fig. 4 A, the 4B, the diameter of two impellers is identical.Another kind of mode, as Fig. 4 D be two blades 20 on the impeller with the radial manner storehouse, blade design partly also can oblique mode storehouse (shown in Fig. 4 C), what be different from Fig. 4 B is the diameter difference of two impellers among Fig. 4 C.
Please refer to Fig. 2 A, it is the fan side cut away view according to another preferred embodiment of the present invention.Fig. 2 B is Fig. 2 A top plan view.The place that is different from last embodiment is that present embodiment is radially arranged storehouse with the blade 20 of two fans, and two blades 20 need to keep a spacing between radially, and blade can not be run foul of each other when rotating.The advantage of arranged radially storehouse can also produce the effect of multiple pressurization between blade except can dwindling the fan volume.As Fig. 2 A, be divided into up and down two figure, top figure represents that the both sides of fan storehouse all leave suction port, makes air to enter in the fan from both sides, can certainly select the monolateral suction port design of following figure.In the design that turns to, present embodiment also can provide two fans to turn to identical or the switched in opposite dual mode, shown in Fig. 3 A and 3B, but it is noted that the design of blade, if two fans turn to the identical design of just using Fig. 3 A, if two fan switched in opposite are with regard to the design with Fig. 3 B.
Though above embodiment forms with two centrifugal fan stack arrangement, be not limited thereto in the application, the centrifugal fan stack arrangement mode more than three also is applicable to the present invention.
By the invention described above preferred embodiment as can be known, use fan storehouse mode of the present invention and dwindle the fan volume, plural drive unit can be provided, avoid one of them drive unit to lose efficacy, cause the awkward situation of whole fan systemic breakdown.In addition, storehouse mode of the present invention also provides flexible design (mode of the turning to of drive unit, air inlet).The arranged radially storehouse can also produce the effect of multiple pressurization between blade except can dwindling the fan volume.
Though the present invention discloses as above with preferred embodiment; yet be not in order to limit the present invention; any person skilled in the art; in not breaking away from design of the present invention and scope; should do various changes and modification, so protection scope of the present invention should be with being as the criterion that claims were defined.
Claims (6)
1. the multi-layer impeller structure of a centrifugal fan is characterized in that, this fan comprises one first impeller at least;
One second impeller;
One first drive unit is installed in the inside of this first impeller; And
One second drive unit is installed in the inside of this second impeller, wherein this first impeller and this second impeller have a plurality of blades respectively, and this first impeller is extended towards the other side by opposite direction respectively with the blade of this second impeller, and this first impeller and this second impeller be by the axial both sides parallel with the center line of this fan inlet air simultaneously, and by the side direction air-out vertical with the center line of this fan.
2. blade wheel structure according to claim 1 is characterized in that, the blade of this first impeller and this second impeller is storehouse in regular turn vertically.
3. blade wheel structure according to claim 1 is characterized in that, the blade of this first impeller and this second impeller is storehouse in regular turn radially.
4. blade wheel structure according to claim 1 is characterized in that, the blade of this first impeller and this second impeller is along oblique storehouse in regular turn.
5. blade wheel structure according to claim 1 is characterized in that, this first impeller is identical with the sense of rotation of this second impeller.
6. blade wheel structure according to claim 1 is characterized in that, the direction of rotation of this first impeller and this second impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021557535A CN100387849C (en) | 2002-12-02 | 2002-12-02 | Centrifugal fan with multilayer impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021557535A CN100387849C (en) | 2002-12-02 | 2002-12-02 | Centrifugal fan with multilayer impeller |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100062588A Division CN1892045B (en) | 2002-12-02 | 2002-12-02 | Centrifugal fan with multi-layer impeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1504647A CN1504647A (en) | 2004-06-16 |
| CN100387849C true CN100387849C (en) | 2008-05-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021557535A Expired - Fee Related CN100387849C (en) | 2002-12-02 | 2002-12-02 | Centrifugal fan with multilayer impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100387849C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406743C (en) * | 2004-06-24 | 2008-07-30 | 建准电机工业股份有限公司 | Blower radiating fan with adding air inflow |
| CN1877129B (en) * | 2005-06-09 | 2010-11-24 | 台达电子工业股份有限公司 | Centrifugal fan |
| KR100655293B1 (en) * | 2005-11-23 | 2006-12-08 | 대우조선해양 주식회사 | Axial turbo jet fan for a long-distance airflow movement |
| US7324339B2 (en) * | 2005-12-21 | 2008-01-29 | International Business Machines Corporation | Dual impeller push-pull axial fan heat sink |
| CN101149057B (en) * | 2006-09-22 | 2011-05-04 | 台达电子工业股份有限公司 | Multiple motor blower and its impeller |
| EP2896836A1 (en) | 2014-01-17 | 2015-07-22 | ABB Oy | Combination of two counterrotating centrifugal fans |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1022435C (en) * | 1989-06-26 | 1993-10-13 | 川波春平 | Oppositely-arranged double-rotor centrifugal fluid-charger |
| CN1171500A (en) * | 1997-08-19 | 1998-01-28 | 吴凤清 | Method for generating natural wind and electric fan of natural wind |
| JP2000120590A (en) * | 1998-05-06 | 2000-04-25 | Eaton Corp | Fan assembly |
| DE19963796A1 (en) * | 1998-12-30 | 2000-07-06 | Valeo Climatisation | Combined heater, ventilator, air conditioner esp. for motor vehicles has integral divider channel to divide intake air into central and peripheral flows |
| CN2406088Y (en) * | 2000-01-17 | 2000-11-15 | 台达电子工业股份有限公司 | Axial-flow fan having multiple series moving vane parts |
| CN2484426Y (en) * | 2001-07-04 | 2002-04-03 | 顺德顺威电器有限公司 | Series centrifugal impeller |
-
2002
- 2002-12-02 CN CNB021557535A patent/CN100387849C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1022435C (en) * | 1989-06-26 | 1993-10-13 | 川波春平 | Oppositely-arranged double-rotor centrifugal fluid-charger |
| CN1171500A (en) * | 1997-08-19 | 1998-01-28 | 吴凤清 | Method for generating natural wind and electric fan of natural wind |
| JP2000120590A (en) * | 1998-05-06 | 2000-04-25 | Eaton Corp | Fan assembly |
| DE19963796A1 (en) * | 1998-12-30 | 2000-07-06 | Valeo Climatisation | Combined heater, ventilator, air conditioner esp. for motor vehicles has integral divider channel to divide intake air into central and peripheral flows |
| CN2406088Y (en) * | 2000-01-17 | 2000-11-15 | 台达电子工业股份有限公司 | Axial-flow fan having multiple series moving vane parts |
| CN2484426Y (en) * | 2001-07-04 | 2002-04-03 | 顺德顺威电器有限公司 | Series centrifugal impeller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1504647A (en) | 2004-06-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Delta Electronic Power Supply (Dongguan) Co., Ltd. Assignor: Delta Optoelectronics Inc. Contract fulfillment period: 2005.1.1 to 2011.3.31 Contract record no.: 2009990000776 Denomination of invention: Centrifugal fan with multilayer impeller Granted publication date: 20080514 License type: Exclusive license Record date: 20090722 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2005.1.1 TO 2011.3.31; CHANGE OF CONTRACT Name of requester: TAIDA ELECTRONICS COMPONENT( DONGGUAN ) CO., LTD. Effective date: 20090722 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 Termination date: 20191202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |