CN102374202A - Noiseless blade-free fan - Google Patents
Noiseless blade-free fan Download PDFInfo
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- CN102374202A CN102374202A CN2010102646617A CN201010264661A CN102374202A CN 102374202 A CN102374202 A CN 102374202A CN 2010102646617 A CN2010102646617 A CN 2010102646617A CN 201010264661 A CN201010264661 A CN 201010264661A CN 102374202 A CN102374202 A CN 102374202A
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- flabellum fan
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Abstract
The invention provides a noiseless blade-free fan which comprises an air-out structure and an airflow generating component for generating airflow, wherein the air-out structure comprises an air outlet; and the airflow generated by the airflow generating component can flow out from the air outlet of the air-out structure. The noiseless blade-free fan also comprises an active silencer, wherein the active silencer comprises at least one microphone, a controller and at least one loudspeaker, the controller is electrically connected with the microphone and the loudspeaker; the microphone detects a wind cutting noise sound wave at the air outlet; and the controller processes the signal of the wind cutting noise sound wave and controls the loudspeaker to generate an anti-noise sound wave opposite to the wind cutting noise sound wave phase. The noise is eliminated by utilizing destructive interference between the wind cutting noise sound wave and the inverted anti-noise sound wave, namely the noise of the noiseless blade-free fan provided by the invention can be eliminated.
Description
Technical field
The invention relates to a kind of no flabellum fan, particularly do not have the flabellum fan about a kind of noise free.
Background technique
The conventional domestic fan generally comprises a rotating shaft, one group can be around the flabellum of an axle rotation and the driving mechanism that is used to drive the flabellum rotation.General flabellum group is provided with near the user, when the flabellum group is rotated at the indoor air-flow that blows to the user that provides, thereby this air-flow accelerated heat is distributed and the water evaporation at user's body surface place makes the people feel nice and cool.
Because the flabellum of fan all is in the state of high speed rotating in the course of the work, because fan must keep good ventilated environment and can not flabellum be sealed, therefore the guard of ventilation can only be installed in addition, but there is the hidden danger on the safety in guard.For example, tiny article fall into fan and possibly excited and the bullet wound user by the flabellum of high speed rotating, and have child's family often to worry that child can stretch into fan and injured with finger.In addition, after through the use between often, can adhere to dust or oil smoke on the guard, and the extremely difficult cleaning of guard.Further, because the conventional domestic fan is to promote air flow through flabellum, and the air-flow that the multi-disc flabellum blows out excites each other and makes the whole air-out of fan even inadequately.
For addressing the above problem; Britain wears gloomy (Dyson), and company develops a kind of no flabellum fan; The no flabellum fan of this kind is with the ramp inwall ejection of high velocity air from a propeller-like; And because Coanda effect (Coanda Effect), this high velocity air can invest the ramp inwall, and can drive on every side that air-flow flows together and the air-flow that blows to the user can be provided.Than conventional fan, it has simple in structure, is easy to advantages such as cleaning, safety.Yet in order to produce Coanda effect, the pressure of 400 kPas (kpa) to be arranged at least when gas is ejected by the ramp inwall, cut noise when pressurized gas can produce very big wind through long and narrow jetburner.
Summary of the invention
The present invention provides a kind of noise free not have the flabellum fan.
For reaching above-mentioned advantage; The present invention provides a kind of noise free not have the flabellum fan; The air-flow generation member that comprises the air-out structure and produce air-flow; This air-out structure comprises an exhaust outlet, and this air-flow produces the exhaust outlet outflow of the air-flow of member generation by this air-out structure, and this noise free does not have the flabellum fan and also comprises an active silencer.
In one embodiment of the invention; This active silencer comprises at least one MIC microphone, a controller and at least one loudspeaker; This controller is electrically connected with MIC microphone and loudspeaker; This MIC microphone detects the wind at place, air port and cuts the noise sound wave, and the signal that this controller is cut the noise sound wave to this wind is handled, and control loudspeaker produces and wind is cut the opposite anti-noise sound wave of noise sound wave phase place.
In one embodiment of the invention, this active silencer abates the noise according to the virtual ground principle.
In one embodiment of the invention, the phase place of this anti-noise signal and noise signal differ 180 degree.
In one embodiment of the invention, this MIC microphone is a microcomputer electric component.
In one embodiment of the invention, this loudspeaker is a microcomputer electric component.
In one embodiment of the invention, this MIC microphone is located at noise free not to be had on the air-out structure of flabellum fan, and near the exhaust outlet place.
In one embodiment of the invention, this MIC microphone is embedded on the air-out structure of no flabellum fan, and its surface is connected with the surface smoothing of MIC microphone air-out structure on every side.
In one embodiment of the invention, this noise free does not have the flabellum fan and also comprises a pedestal, and this pedestal is connected to the bottom of air-out structure, is suitable for supporting the air-out structure, and this loudspeaker is located at this noise free not to be had on the pedestal of flabellum fan.
In one embodiment of the invention, this loudspeaker is located on the air-out structure of no flabellum fan, near the exhaust outlet place.
Do not have in the working procedure of flabellum fan at this noise free; MIC microphone detects the wind at place, air port and cuts noise signal; And above-mentioned signal is sent to controller analyzes its frequency spectrum; Controller is according to the create antagonism anti-noise signal of noise of virtual ground principle, and anti-noise signal is sent to loudspeaker, and loudspeaker is seen anti-noise sound wave off according to anti-noise signal; Utilize the anti-noise sound wave of anti-phase and destruction interference that wind is cut between the noise signal to abate the noise, eliminate the noise that noise free of the present invention does not have the flabellum fan.
Above-mentioned explanation only is the general introduction of technological scheme of the present invention; Understand technological means of the present invention in order can more to know; And can implement according to the content of specification, and for let of the present invention above-mentioned with other purposes, feature and advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.
Description of drawings
Fig. 1 does not have the plan view of flabellum fan for noise free of the present invention.
Fig. 2 does not have the partial cutaway schematic of flabellum fan along the A-A line for noise free shown in Figure 1.
Fig. 3 is the enlarged diagram of Fig. 2 centre circle III.
Fig. 4 does not have the working principle schematic representation of the active silencer of flabellum fan for noise free of the present invention.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention; Below in conjunction with accompanying drawing and preferred embodiment; Noise free to proposing according to the present invention does not have its embodiment of flabellum fan, structure, characteristic and effect thereof, specify as after.
Fig. 1 does not have the plan view of flabellum fan for noise free of the present invention.Fig. 2 does not have the partial cutaway schematic of flabellum fan along the A-A line for noise free shown in Figure 1.See also Fig. 1 and Fig. 2, noise free of the present invention does not have flabellum fan 100 and comprises that air-out structure 110, pedestal 120, air-flow produce member 130 and active silencer 140.Pedestal 120 is connected to the bottom of air-out structure 110, is suitable for supporting air-out structure 110.Air-flow produces member 130 and is disposed in the pedestal 120, is suitable for producing air-flow, and the air-flow of its generation can be flowed in the air-out structure 110 by this pedestal 120.
Air-out structure 110 is roughly ring, but not as limit, for example is suitable shapes such as ellipse, " runway " shape.In the present embodiment, air-out structure 110 has inner passage 111, first opening end 112 and second opening end 113 relative with first opening end 112.Inner passage 111 is suitable for air feed and flows through for being formed at the continuous circuit in the air-out structure 110.
Air-out structure 110 is two relative wall portions near second opening end, 113 places; Be inwall 114 and outer wall 115, as shown in Figure 3, the surface of inwall 114 relative outer walls 115 is coanda surface 114a; The surface of outer wall 115 opposed inner walls 114 then is cambered surface 115a; Form exhaust outlet 116 between coanda surface 114a and the cambered surface 115a, the air-flow in the inner passage 111 flows out from exhaust outlet 116, and the airflow direction that exhaust outlet 116 flows out is towards first opening end 112.
Air-flow produces member 130 and comprises drive unit (figure does not show) and impeller (figure does not show).Drive unit is disposed in the outer cover 122 of pedestal 120, is used for drives impeller and rotates.This drive unit can be dc brushless motor, AC induction motor, pump or other power sources.
Active silencer 140 comprises MIC microphone 141, controller 142 and loudspeaker 143.MIC microphone 141 is embedded on the inwall 114 of air-out structure 110; And near exhaust outlet 116 places; Its surface is connected with inwall 114 surface smoothings around the MIC microphone 141, and the wind that is used to detect 116 places, air port is cut the noise sound wave, and cuts noise sound wave generation wind according to wind and cut noise signal.Controller 142 is located in the pedestal 120; Be electrically connected with MIC microphone 141; Be used to receive wind and cut noise signal and analyze its frequency spectrum, cut the anti-noise signal (phase place of anti-noise signal and noise signal differ 180 degree) of noise signal, and anti-noise signal is passed to loudspeaker 143 with the wind that creates antagonism.Loudspeaker 143 is located on the pedestal 120; Be electrically connected with controller 142; This loudspeaker 143 is launched anti-noise sound wave according to anti-noise signal under the control of controller 142, utilize the anti-noise sound wave of anti-phase and destruction interference that wind is cut between the noise sound wave to abate the noise, i.e. the present invention is utilized in the mode that noise source eliminates the noise and abates the noise; That is to say that the present invention abates the noise according to the virtual ground principle.
When needing to use noise free not have flabellum fan 100; The user only need push appropriate control knob 123 to start drive unit; Make the drive device drives wheel rotation; The air intlet 122a of air outside process outer cover 122 is drawn into noise free not to be had in the flabellum fan 100, forms air-flow F1 as shown in Figure 2.In a preferred embodiment, air is drawn into the speed of 20 to 30 liters of about per seconds, preferably approximately 27l/s (rising per second).The air-flow that produces member 130 outflows from air-flow is divided into two strands of air-flows, and these two strands of air-flows pass inner passage 111 in the opposite direction.Air-flow is compressed at exhaust outlet 116 places, and discharges through exhaust outlet 116, crosses coanda surface 114a by the air flow stream that exhaust outlet 116 is discharged, and under the effect of Coanda effect, is exaggerated, and formation one flows to the air-flow F2 of first opening end 112.
Fig. 4 does not have the working principle schematic representation of the active silencer of flabellum fan for noise free of the present invention.As shown in Figure 4; In the flow process of air-flow F2; MIC microphone 141 detects the wind at 116 places, air port and cuts noise sound wave N1; And the signal that wind is cut noise sound wave N1 is sent to controller 142, the signal that 142 pairs of wind of controller are cut the noise sound wave is handled, and control loudspeaker 143 generations and wind are cut the opposite anti-noise sound wave N2 of noise sound wave N1 phase place; Utilize the anti-noise sound wave N2 of anti-phase and destruction interference that wind is cut between the noise sound wave N1 to abate the noise, eliminate the noise that noise free of the present invention does not have the flabellum fan.
What deserves to be mentioned is that MIC microphone 141 can be made into microcomputer electric component with loudspeaker 143 among the present invention does not have the whole succinct outward appearance of flabellum fan to keep noise free.
In the present embodiment, the quantity of MIC microphone 141 and loudspeaker 143 is one, and is understandable, a plurality of MIC microphones 141 can be set at exhaust outlet 116 places or a plurality of loudspeakers 143 are set on pedestal 120.
In the present embodiment, loudspeaker 143 is located on the pedestal 120, and in other embodiments, loudspeaker 143 can be located on the air-out structure 110, and is near exhaust outlet 116 places, adjacent with MIC microphone 141.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technological scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be not break away from technological scheme content of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technological scheme of the present invention according to technical spirit of the present invention.
Claims (10)
1. a noise free does not have the flabellum fan; The air-flow generation member that comprises the air-out structure and produce air-flow; This air-out structure comprises an exhaust outlet; This air-flow produces the exhaust outlet outflow of the air-flow of member generation by this air-out structure, and it is characterized in that: this noise free does not have the flabellum fan and also comprises an active silencer.
2. noise free as claimed in claim 1 does not have the flabellum fan; It is characterized in that: this active silencer comprises at least one MIC microphone, a controller and at least one loudspeaker; This controller is electrically connected with MIC microphone and loudspeaker; This MIC microphone detects the wind at place, air port and cuts the noise sound wave, and the signal that this controller is cut the noise sound wave to this wind is handled, and control loudspeaker produces and wind is cut the opposite anti-noise sound wave of noise sound wave phase place.
3. noise free as claimed in claim 2 does not have the flabellum fan, it is characterized in that: this active silencer abates the noise according to the virtual ground principle.
4. noise free as claimed in claim 2 does not have the flabellum fan, it is characterized in that: the phase place of this anti-noise signal and noise signal differ 180 degree.
5. noise free as claimed in claim 1 does not have the flabellum fan, it is characterized in that: this MIC microphone is a microcomputer electric component.
6. noise free as claimed in claim 1 does not have the flabellum fan, it is characterized in that: this loudspeaker is a microcomputer electric component.
7. noise free as claimed in claim 1 does not have the flabellum fan, it is characterized in that: this MIC microphone is located on the air-out structure of no flabellum fan, and near the exhaust outlet place.
8. noise free as claimed in claim 7 does not have the flabellum fan, it is characterized in that: this MIC microphone is embedded on the air-out structure of no flabellum fan, and its surface is connected with the surface smoothing of MIC microphone air-out structure on every side.
9. noise free as claimed in claim 1 does not have the flabellum fan; It is characterized in that: this noise free does not have the flabellum fan and also comprises a pedestal; This pedestal is connected to the bottom of air-out structure, is suitable for supporting the air-out structure, and this loudspeaker is located at this noise free not to be had on the pedestal of flabellum fan.
10. noise free as claimed in claim 1 does not have the flabellum fan, it is characterized in that: this loudspeaker is located on the air-out structure of no flabellum fan, near the exhaust outlet place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102646617A CN102374202A (en) | 2010-08-27 | 2010-08-27 | Noiseless blade-free fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102646617A CN102374202A (en) | 2010-08-27 | 2010-08-27 | Noiseless blade-free fan |
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| Publication Number | Publication Date |
|---|---|
| CN102374202A true CN102374202A (en) | 2012-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102646617A Pending CN102374202A (en) | 2010-08-27 | 2010-08-27 | Noiseless blade-free fan |
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| CN (1) | CN102374202A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705268A (en) * | 2012-05-29 | 2012-10-03 | 张秀英 | Noise reduction fan |
| CN104571396A (en) * | 2013-10-14 | 2015-04-29 | 英业达科技有限公司 | Active fan noise control system |
| CN104564847A (en) * | 2013-10-22 | 2015-04-29 | 英业达科技有限公司 | Active fan noise control system |
| CN104712589A (en) * | 2013-12-13 | 2015-06-17 | 鸿富锦精密电子(天津)有限公司 | Fan |
| CN105065308A (en) * | 2015-08-28 | 2015-11-18 | 苏州清听声学科技有限公司 | Active noise reduction exhaust fan and line-spectrum noise active control method thereof |
| CN105228417A (en) * | 2015-10-21 | 2016-01-06 | 上海斐讯数据通信技术有限公司 | A kind of mobile terminal and cooling system thereof |
| CN105298933A (en) * | 2015-09-11 | 2016-02-03 | 中国船舶重工集团公司第七0九研究所 | Active noise control device for axial fan |
| CN105351225A (en) * | 2015-11-19 | 2016-02-24 | 华蓥市双河第二初级中学 | Low-noise fan for classroom |
| CN105635704A (en) * | 2015-12-31 | 2016-06-01 | 苏州佳世达光电有限公司 | Projection noise reduction system and noise reduction method |
| CN106194793A (en) * | 2016-08-05 | 2016-12-07 | 安庆市沁之源电器有限公司 | A kind of quiet fan |
| CN109319115A (en) * | 2017-08-01 | 2019-02-12 | 松下电器（美国）知识产权公司 | Unmanned vehicle |
| CN114846246A (en) * | 2020-11-13 | 2022-08-02 | 青岛海尔空调器有限总公司 | Noise cancellation using motor controlled home appliances |
-
2010
- 2010-08-27 CN CN2010102646617A patent/CN102374202A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705268A (en) * | 2012-05-29 | 2012-10-03 | 张秀英 | Noise reduction fan |
| CN104571396A (en) * | 2013-10-14 | 2015-04-29 | 英业达科技有限公司 | Active fan noise control system |
| CN104564847A (en) * | 2013-10-22 | 2015-04-29 | 英业达科技有限公司 | Active fan noise control system |
| CN104712589A (en) * | 2013-12-13 | 2015-06-17 | 鸿富锦精密电子(天津)有限公司 | Fan |
| CN105065308A (en) * | 2015-08-28 | 2015-11-18 | 苏州清听声学科技有限公司 | Active noise reduction exhaust fan and line-spectrum noise active control method thereof |
| CN105298933A (en) * | 2015-09-11 | 2016-02-03 | 中国船舶重工集团公司第七0九研究所 | Active noise control device for axial fan |
| CN105298933B (en) * | 2015-09-11 | 2017-10-31 | 中国船舶重工集团公司第七0九研究所 | A kind of aerofoil fan active noise control device |
| CN105228417A (en) * | 2015-10-21 | 2016-01-06 | 上海斐讯数据通信技术有限公司 | A kind of mobile terminal and cooling system thereof |
| CN105351225A (en) * | 2015-11-19 | 2016-02-24 | 华蓥市双河第二初级中学 | Low-noise fan for classroom |
| CN105635704A (en) * | 2015-12-31 | 2016-06-01 | 苏州佳世达光电有限公司 | Projection noise reduction system and noise reduction method |
| CN106194793A (en) * | 2016-08-05 | 2016-12-07 | 安庆市沁之源电器有限公司 | A kind of quiet fan |
| CN109319115A (en) * | 2017-08-01 | 2019-02-12 | 松下电器（美国）知识产权公司 | Unmanned vehicle |
| CN114846246A (en) * | 2020-11-13 | 2022-08-02 | 青岛海尔空调器有限总公司 | Noise cancellation using motor controlled home appliances |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120314 |