CN101338762A - Passive fan - Google Patents
Passive fan Download PDFInfo
- Publication number
- CN101338762A CN101338762A CNA2007101283351A CN200710128335A CN101338762A CN 101338762 A CN101338762 A CN 101338762A CN A2007101283351 A CNA2007101283351 A CN A2007101283351A CN 200710128335 A CN200710128335 A CN 200710128335A CN 101338762 A CN101338762 A CN 101338762A
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- passive
- fan
- power rotor
- impeller
- power
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Abstract
The present invention discloses a driven fan, which comprises a fan frame, at least a vane wheel and at least a driving rotator. The vane wheel is arranged in the fan frame. The driving rotator is arranged on the fan frame and drives the vane wheel to rotate. The vane wheel is arranged independently from the driving rotator.
Description
Technical field
The present invention relates to a kind of fan, particularly relate to a kind of passive fan.
Background technique
Along with electronic product towards high-performance, high frequency, high-speed and lightening developing rapidly, cause the heating temperature of electronic product more and more higher, thereby be easy to generate wild effect, influence production reliability and working life.Therefore, heat radiation has become one of important topic of electronic product, is to be common structure setting and utilize fan as sink.
Please refer to shown in Figure 1ly, existing fan 1 comprises an impeller 11, a motor 12 and a fan frame 13, and impeller 11 has a plurality of flabellums 111.Wherein, this motor 12 is arranged on this impeller 11 central authorities, and in this impeller 11 is arranged on fan frame 13.Motor 12 is linked to impeller 11, and drives impeller 11 rotations, so just can produce air-flow to reach the effect of heat radiation.
Yet in this fan 1, Yin Mada 12 is positioned at impeller 11 central authorities and has certain size, thus under the situation of considering motor 12 parking spaces and fan 1 overall volume, must sacrifice the fan blade area of impeller 11, and reduce the heat dissipation of fan 1.In addition, Yin Mada 12 itself also can produce heat, so the heat dissipation of fan 1 can be further reduced.By as can be known aforementioned, the design of fan 1 and heat dissipation all have very big restriction.
Summary of the invention
For addressing the above problem, the invention provides a kind of passive fan, with under unidimensional situation, what significantly reduce the calm zone of impeller central authorities and significantly improve passive fan goes out the inlet air active area.
For reaching above-mentioned purpose, the present invention proposes a kind of passive fan and comprises fan frame, at least one passive impeller and an at least one power rotor.This power rotor is in order to drive this passive wheel rotation.This passive impeller and this power rotor lay respectively at this fan frame inboard and outside.
From the above, passive fan of the present invention is to use the inner passive impeller that does not contain motor, again by not being arranged on the mode that the power rotor of fanning in the frame drives this passive impeller, so that the passive fan of the present invention is operated.At this moment because passive impeller does not need self-active rotation, so the setting of this no motor of passive impeller central authorities etc., and can reduce significantly that central calm zone also significantly improves passive fan go out the inlet air active area, and then significantly promote the heat dissipation of fan.
Description of drawings
Fig. 1 is the schematic representation of existing fan;
Fig. 2 A is the schematic perspective view of the present invention's first preferred embodiment passive fan;
Fig. 2 B is the schematic representation of Fig. 2 A opposition side;
Fig. 2 C looks schematic representation for the vertical profile of Fig. 2 A;
Fig. 2 D is the power rotor of Fig. 2 B and the magnetic action schematic representation of dynamical inducing part;
Fig. 3 is the schematic representation of the present invention's second preferred embodiment passive fan;
Fig. 4 is the schematic representation of the present invention's the 3rd preferred embodiment passive fan;
Fig. 5 is the schematic representation of the present invention's the 4th preferred embodiment passive fan;
Fig. 6 is the fan performance plotted curve of passive fan of the present invention and existing fan.
The component symbol explanation:
1: fan 11: impeller
111,321: flabellum 12: motor
13,31,41: fan frame 3,3a, 3b, 4 passive fans
311: framework 312: rib
313: central siphon portion 3131: bearing
32,32a, 32b, 42: passive impeller
322: wheel hub 323,323a, 323b: dynamical inducing part
3231: magnetic 331: ring magnet
324: rotating shaft
33,33a, 33b, 43: power rotor
34: drive mechanism
Embodiment
Hereinafter with reference to relevant drawings, a kind of passive fan according to preferred embodiment of the present invention is described, wherein components identical will be illustrated with identical reference marks.
Please refer to shown in Fig. 2 A and Fig. 2 C, the passive fan 3 of preferred embodiment of the present invention comprises fan frame 31, at least one passive impeller 32 and an at least one power rotor 33.This passive fan 3 can be an axial flow fan, also can be centrifugal fan.
This fan frame 31 has a framework 311, at least one rib 312 and a central siphon portion 313, and this rib 312 links this central siphon portion 313 and this framework 311.These rib 312 quantity are decided on actual demand, can be 1, also can be more than 2 or 2.
This passive impeller 32 is arranged in this framework 311, and is set in this central siphon portion 313.And this passive impeller 32 has a plurality of flabellums 321, a wheel hub 322, a rotating shaft 324 and at least one dynamical inducing part 323, wherein is preferably the active control device that is not provided with as motor etc. in this passive impeller 32.Because this passive impeller 32 do not have active control device, thus need not reserve the space of rotor magnet, magnetic pole of the stator, control circuit board etc., and the air intake/outtake surface that significantly increases this passive impeller 32 amasss, also not needing provides magnetic pole of the stator required volume in fanning frame.So, can be under the situation of same size fan, use maximum sized flabellum and to obtain maximum air intake/outtake surface long-pending, and then significantly promote the radiating effect of fan.This passive impeller 32 can be magnetic transmission, friction driving or interlock transmission by the mode of these power rotor 33 primings.
These flabellums 321 are located on this wheel hub 322 peripheries, and this rotating shaft 324 is nested with in this central siphon portion 313, and at least one bearing 3131 more is set in this central siphon portion 313, to support this rotating shaft 324 rotations.
This dynamical inducing part 323 is corresponding with this power rotor 33, and is subjected to 33 primings of this power rotor, and then drives this passive impeller 32 rotations.This dynamical inducing part 323 can be around being arranged on this passive impeller 32 peripheries, also can being arranged on these flabellum 321 outer rims.This dynamical inducing part 323 can be annular magnet structure, the structure of tool guide slot or the structure of tool dentation structure etc. such as the many magnetic poles of tool such as annular magnetizer of many magnetic poles annular permanent magnnet, many magnetic poles of coating gonosome 3231.The shape of this dynamical inducing part 323 for example is annular, arc, polygonal or curved.In addition, this passive impeller 32 also can be for flabellum has magnetic, and does not need this dynamical inducing part 323.
This power rotor 33 lays respectively at this fan frame outside with inboard with this passive impeller 32, in order to these passive impeller 32 rotations of priming.This power rotor 33 can be separate motors, driver, runner or driving gear.This power rotor 33 can only be arranged on that these framework 311 1 side angles fall or these framework 311 outsides.Can be in contact with one another between this power rotor 33 and this passive impeller 32, also can not contact mutually.
In this preferred embodiment, please refer to shown in Fig. 2 D, these power rotor 33 peripheries are provided with the ring magnet 331 of a plurality of N of tool, S magnetic pole, have magnetic force between this ring magnet 331 and this dynamical inducing part 323.When 33 rotations of this power rotor, this dynamical inducing part 323 promptly because of aforementioned magnetic force by priming, and then drive and should rotate by passive impeller 32.Aforementioned magnetic force can be magnetic attraction, magnetic repulsion or have magnetic concurrently and magnetic force that magnetic is scolded.
Please refer to the present invention shown in Figure 3 second preferred embodiment, passive fan 3 differences of passive fan 3a of this preferred embodiment and above-mentioned first preferred embodiment are that power rotor 33a is the moving body of tool guide slot, and the dynamical inducing part 323a of passive impeller 32a then changes the structure with the corresponding tool guide slot of this power rotor 33a into.This power rotor 33a for example is the driver or the runner of tool guide slot.At this moment, this power rotor 33a and this dynamical inducing part 323a pass through a drive mechanism 34 and mutual interlock.This drive mechanism 34 can be belt, chain or other shoestring.At this moment, this power rotor 33a and this dynamical inducing part 323a can be in contact with one another, and also can not contact mutually.
Please refer to the present invention shown in Figure 4 the 3rd preferred embodiment, the difference of passive fan 3b of this preferred embodiment and the passive fan 3 of above-mentioned first preferred embodiment is that power rotor 33b is a driving gear, and the dynamical inducing part 323b of passive impeller 32b then changes the structure with the corresponding straight-tooth spur wheel of this power rotor 33b, spiral spur gear, herringbone gear, pin gear or tool dentation structure into.At this moment, directly interlock or of this power rotor 33b and this dynamical inducing part 323b by the indirectly interlock of another independent gear (drive mechanism).At this moment, this power rotor 33b and this dynamical inducing part 323b can be in contact with one another, and also can not contact mutually.
Though the foregoing description uses a power rotor to drive a passive wheel rotation, the present invention also can use a power rotor to drive a plurality of passive wheel rotation, uses a plurality of power rotors to drive a passive wheel rotation or use a plurality of power rotors to drive a plurality of passive wheel rotation.
Please refer to the passive fan 4 of the present invention shown in Figure 5 the 4th preferred embodiment, this passive fan 4 comprises a fan frame 41, four passive impellers 42 and power rotors 43, and it is the enforcement state that a power rotor 43 drives four passive impellers 42.By this power rotor 43 being arranged on the central authorities of this fan frame 41, this power rotor 43 just can drive these passive impellers 42 simultaneously, respectively or in regular turn and rotate.This power rotor 43 can adopt above-mentioned any power rotor, and these passive impellers 42 are and these power rotor 43 corresponding forms.At this moment, passive fan 4 can obtain more air quantity than existing fan.
Please refer to shown in Figure 6ly, it is the fan performance plotted curve of passive fan of the present invention and existing fan.In this figure, X-axis is represented air quantity (unit: per minute cubic meter (M
3/ min)), Y-axis is represented blast (unit: mm H
2O).Under the situation of identical overall dimensions and noise, existing fan is to have the fan that strengthens flabellum, and passive fan of the present invention then is the state that a power rotor drives two impellers.As shown in Figure 6, under the situation of same size and noise, the blast that passive fan of the present invention is exported and the characteristic of air quantity are good than prior art.And a little less than passive fan of the present invention can avoid existing fan because of the long beat easily of flabellum, temperature distortion and structural strength and shortcoming such as frangibility.
In addition, though the foregoing description is that example describes with passive impeller by the power rotor priming, yet not as limit, aforementioned passive fan also can produce electric power by the priming power rotor via the passive impeller of an extraneous wind blows.
From the above, passive fan of the present invention is to use the inner passive impeller that does not contain motor, again by not being arranged on the mode that the power rotor of fanning in the frame drives this passive impeller, so that the passive fan of the present invention is operated.At this moment because passive impeller does not need self-active rotation, so the setting of this no motor of passive impeller central authorities etc., and can reduce significantly that central calm zone also significantly improves passive fan go out the inlet air active area, and then significantly promote the heat dissipation of fan.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be included in the accompanying Claim its equivalent modifications of carrying out or change.
Claims (18)
1. passive fan comprises:
One fan frame;
At least one passive impeller is arranged in this fan frame; And
At least one power rotor be arranged on the fan frame with priming this passive wheel rotation, and this passive impeller and this power rotor is distinguished separate configurations.
2. passive fan as claimed in claim 1, wherein when passive impeller when being a plurality of, this power rotor drives these passive wheel rotation.
3. passive fan as claimed in claim 2, wherein this power rotor drives these passive wheel rotation simultaneously, respectively or in regular turn.
4. passive fan as claimed in claim 1, wherein when power rotor when being a plurality of, common this passive wheel rotation that drives of these power rotors.
5. passive fan as claimed in claim 1 wherein is when a plurality of when impeller and power rotor, and these power rotors drive these passive wheel rotation respectively.
6. passive fan as claimed in claim 1, wherein this power rotor is separate motors, driver, runner or driving gear.
7. passive fan as claimed in claim 1, wherein this power rotor only is arranged on this fan frame one side angle this fan frame outside that falls maybe.
8. passive fan as claimed in claim 1, wherein this power rotor passes through this passive impeller of a drive mechanism priming, and this drive mechanism is gear, belt, chain or other shoestring.
9. passive fan as claimed in claim 1, wherein this passive impeller has a plurality of flabellums and at least one dynamical inducing part, this dynamical inducing part is driven this passive impeller rotation by this power rotor priming, and this dynamical inducing part is around being arranged on this passive impeller periphery or these flabellum outer rims.
10. passive fan as claimed in claim 9, wherein this dynamical inducing part is many magnetic poles annular permanent magnnet, annular magnetizer, the structure of tool guide slot or the structure of tool dentation structure that coats many magnetic poles gonosome.
11. passive fan as claimed in claim 9, wherein this dynamical inducing part is shaped as annular, arc, polygonal or curved.
12. passive fan as claimed in claim 9, when wherein this power rotor was driving gear, this dynamical inducing part was the structure with the corresponding straight-tooth spur wheel of this power rotor, spiral spur gear, herringbone gear, pin gear or tool dentation structure.
13. as claim 1 or 9 described passive fans, wherein this power rotor periphery is provided with the ring magnet of a plurality of N of tool, S magnetic pole.
14. passive fan as claimed in claim 9, wherein this power rotor is the moving body of tool guide slot, and this dynamical inducing part is the structure with the corresponding tool guide slot of this power rotor.
15. passive fan as claimed in claim 1, wherein this passive impeller is magnetic transmission, friction driving or interlock transmission by the mode of this power rotor priming.
16. passive fan as claimed in claim 1, wherein when this passive impeller of extraneous wind blows, this power rotor of this passive impeller priming produces electric power.
17. passive fan as claimed in claim 1, wherein no active control device in this passive impeller.
18. passive fan as claimed in claim 1, wherein this passive impeller has a plurality of flabellums, and these flabellums have magnetic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101283351A CN101338762A (en) | 2007-07-06 | 2007-07-06 | Passive fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101283351A CN101338762A (en) | 2007-07-06 | 2007-07-06 | Passive fan |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410524292.9A Division CN104314844A (en) | 2007-07-06 | 2007-07-06 | Passive fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101338762A true CN101338762A (en) | 2009-01-07 |
Family
ID=40212907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101283351A Pending CN101338762A (en) | 2007-07-06 | 2007-07-06 | Passive fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101338762A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547891A (en) * | 2018-07-26 | 2018-09-18 | 合肥研新离合器有限公司 | A kind of brake disc of dry single-disk electromagnetic brake |
| CN109028350A (en) * | 2018-07-25 | 2018-12-18 | 李汝和 | A kind of cooling outdoor airflow tapping equipment of environment protection type air conditioner and discharge method |
| CN112412845A (en) * | 2019-08-23 | 2021-02-26 | 广东美的环境电器制造有限公司 | Air supply device |
| CN112412840A (en) * | 2019-08-23 | 2021-02-26 | 广东美的环境电器制造有限公司 | Air supply device |
| CN112443493A (en) * | 2019-08-27 | 2021-03-05 | 广东美的环境电器制造有限公司 | Air supply device |
| CN114688050A (en) * | 2020-12-25 | 2022-07-01 | 义乌市鼎邦文体用品有限公司 | Combined fan device |
-
2007
- 2007-07-06 CN CNA2007101283351A patent/CN101338762A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028350A (en) * | 2018-07-25 | 2018-12-18 | 李汝和 | A kind of cooling outdoor airflow tapping equipment of environment protection type air conditioner and discharge method |
| CN108547891A (en) * | 2018-07-26 | 2018-09-18 | 合肥研新离合器有限公司 | A kind of brake disc of dry single-disk electromagnetic brake |
| CN112412845A (en) * | 2019-08-23 | 2021-02-26 | 广东美的环境电器制造有限公司 | Air supply device |
| CN112412840A (en) * | 2019-08-23 | 2021-02-26 | 广东美的环境电器制造有限公司 | Air supply device |
| CN112443493A (en) * | 2019-08-27 | 2021-03-05 | 广东美的环境电器制造有限公司 | Air supply device |
| CN114688050A (en) * | 2020-12-25 | 2022-07-01 | 义乌市鼎邦文体用品有限公司 | Combined fan device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20090107 |