CN100357612C - Rotating rear guide vane of axial flow fan - Google Patents
Rotating rear guide vane of axial flow fan Download PDFInfo
- Publication number
- CN100357612C CN100357612C CNB2005101118020A CN200510111802A CN100357612C CN 100357612 C CN100357612 C CN 100357612C CN B2005101118020 A CNB2005101118020 A CN B2005101118020A CN 200510111802 A CN200510111802 A CN 200510111802A CN 100357612 C CN100357612 C CN 100357612C
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- Prior art keywords
- rotating
- rear guide
- guide vane
- axial flow
- flow fan
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Abstract
The present invention relates to a rotating rear guide blade of an axial flow fan, which belongs to the technical field of a fluid machine. The present invention comprises a rear guide blade, a circular cylinder and a rotating shaft, wherein the rear guide blade is fixedly connected to the outer circumferential surface of the circular cylinder. One end of the rotating shaft is fixedly connected to the center of the circular surface on the end of the circular cylinder. After rotation, the guide blade has three rotating modes: Firstly, the guide blade is freely rotated. Secondly, the guide blade is driven by a motor. Thirdly, the guide blade is rotated along with the blade wheel of the axial flow fan. For different rotating modes of the guide blade after rotation, an inlet angle and an outlet angle of the guide blade are different and the form of the blade curvature is different after rotation. Since the rotating direction of the guide blade is the same as the component direction of circumferential speed of the axial flow fan and an oblique (mixed) flow fan after the axial flow fan is rotated, the strength during the impact of the air current to the guide blade is relieved by three rotating modes. The noise of the axial flow fan and an inclined flow (mixed flow) fan is reduced and the efficiency of the axial flow fan and an inclined flow (mixed flow) fan is improved. The present invention has the advantages of easy use and simple structure, reduces the noise of the axial flow fan and an inclined flow (mixed flow) fan, improves the efficiency of the axial flow fan and an inclined flow (mixed flow) fan and has obvious economical and social benefits.
Description
Technical field:
What the present invention relates to is a kind of axial-flow blower rear guide vane, and particularly a kind of rotating rear guide vane of axial flow fan that is applicable to axial flow, oblique (mixing) flow fan belongs to the fluid machinery technical field.
Background technique:
For the high slightly axial-flow blower of most pressure, generally static rear guide vane all is installed in the impeller back.This rear guide vane also usually is used for tiltedly (mixing) flow fan.Because the direction that air communication is everlasting when flowing out axial flow, oblique (mixing) flow fan is not axial, promptly velocity component is arranged at circumferencial direction.In order to reclaim this part energy,, make that the airflow direction that flows out axial flow, oblique (mixing) flow fan is axial basically behind impeller so static rear guide vane usually is installed.But because the vanes fixed of rear guide vane is at axial flow, tiltedly on the outer surface of (mixing) flow fan wheel hub, the rear guide vane blade that has is the support of double as motor also, thereby the rear guide vane blade is actionless.Airflow flowing certainly will cause bigger collision loss and send the impact noise that rings when bumping with static rear guide vane blade like this.
In the prior art, the patent No. is CN98121378.2, name is called the patent of invention of " output guide blade that is used for axial fan ", it radially " stator all play with fan hole in the effect of the coefficient radial diffuser of rotation/abnormal flow ", because the axial fan in this patent is the condenser working that cooperates air conditioner, and axial fan is littler than condenser, so radially be provided with stator, play " radial diffuser ", stator is fixing and static.The patent No. is CN89221367.1, name is called the utility model patent of " axial-flow blower adjustable guide vane device ", it is mainly used in " enlarge range of operation and keep good economic ", because it is " requiring large and small rotor blade according to air quantity ", so when air quantity met the requirements, stator did not rotate; And on scheming, can find out that the rotatingshaft of stator is a radial direction, on the industry this form is called " stator blade is adjustable ".Above-mentioned two patents all do not make the air-flow that flows out axial-flow blower be tending towards axial function.
Summary of the invention:
For deficiency and the defective that overcomes prior art, intensity when air-flow of minimizing outflow axial flow, oblique (mixing) flow fan and guide vane collide as far as possible, with the noise and their efficient of raising that reduce axial flow, oblique (mixing) flow fan, the present invention has designed a kind of rotating rear guide vane of axial flow fan simple in structure.The present invention includes rear guide vane blade, cylinder and rotating shaft.The rear guide vane blade along the circumferential direction is fixed on the external peripheral surface of cylinder, and an end of rotating shaft is fixed in the circular surface center of cylinder end.Rotating rear guide vane has three kinds of rotating manners: freely rotate, rotate with driven by motor or with the axial flow fan vane wheel in the place ahead.When rotating rear guide vane was worked with free rotating manner, the other end of rotating shaft linked to each other with bearing; When rotating rear guide vane was worked with driven by motor, the other end of rotating shaft linked to each other with motor shaft; When the mode of rotating together when the axial flow fan vane wheel in rotating rear guide vane and the place ahead is worked, the shared rotating shaft of the impeller in rotating rear guide vane and the place ahead.For freely rotating and use the motor induced way, the axle core of the axle core of rotating shaft and impeller shaft is on same straight line.When using driven by motor, must guarantee that also the sense of rotation of rotating rear guide vane is consistent with the circumferential speed component direction that flows out axial flow, oblique (mixing) flow fan air-flow, the intensity when the rear guide vane blade being collided to alleviate air-flow.
Owing to rotates during rear guide vane of the present invention work, air-flow this moment mobile in rotating rear guide vane is relative movement, its absolute motion must through and the synthetic ability of peripheral velocity definite.For the different rotating manner of rotating rear guide vane, the turnover bicker of rotating rear guide vane blade and the form of blade camber also have nothing in common with each other, and calculate the turnover bicker of rear guide vane blade and the camber of blade according to the velocity triangle principle.
When axial flow, tiltedly during the work of (mixing) flow fan, air-flow enters the annular space at rear guide vane blade place after the draught fan impeller outflow.For free rotating manner, rotating rear guide vane of axial flow fan can flow into forwardly under the washing away of air-flow and rotate around the axis; To the driven by motor mode and the mode of rotating with the place ahead impeller, because the sense of rotation of rotating rear guide vane of axial flow fan is consistent with the circumferential speed component direction that flows out axial flow, oblique (mixing) flow fan air-flow, so three kinds of rotating manners have all been alleviated the intensity when air-flow collides guide vane, reduced axial flow, tiltedly (mixing) flow fan noise with improved their efficient.
Beneficial effect of the present invention:
The present invention is easy to use, and is simple in structure, can reduce the noise of axial flow, oblique (mixing) flow fan and improve their efficient, has than remarkable economic efficiency and social benefit.
Description of drawings
Fig. 1 is the structural representation of rear guide vane of the present invention,
Fig. 2 is the structural representation that rear guide vane of the present invention rotates with the place ahead axial flow fan vane wheel,
Embodiment
Below in conjunction with accompanying drawing concrete enforcement of the present invention is further described.
As shown in Figure 1 and Figure 2, rotating rear guide vane of axial flow fan comprises rear guide vane blade 1, cylinder 2, rotating shaft 3.Rear guide vane blade 1 is by welding or being riveted on the external peripheral surface of cylinder 2, and an end of rotating shaft 3 is by welding or be riveted on the circular surface center of cylinder 2 ends, and rear guide vane blade 1, cylinder 2 and rotating shaft 3 also can be made one by casting method.Rotating rear guide vane has three kinds of rotating manners: freely rotate, rotate with driven by motor or with the axial flow fan vane wheel 4 in the place ahead.When rotating rear guide vane was worked with free rotating manner, the other end of rotating shaft 3 linked to each other with bearing; When rotating rear guide vane was worked with driven by motor, the other end of rotating shaft 3 linked to each other with motor shaft; When rotating rear guide vane is worked with the mode of axial flow fan vane wheel 4 rotations in the place ahead, impeller 4 shared rotating shafts in rotating rear guide vane and the place ahead.For freely rotating and use the motor induced way, the axle core of rotating shaft 3 and the rotating shaft axle core of impeller 4 are on same straight line; When using driven by motor, must guarantee that also the sense of rotation of rotating rear guide vane is consistent with the circumferential speed component direction that flows out axial flow, oblique (mixing) flow fan air-flow, the intensity when the rear guide vane blade being collided to alleviate air-flow.
Owing to rotates during rear guide vane of the present invention work, air-flow this moment mobile in rotating rear guide vane is relative movement, its absolute motion must through and the synthetic ability of peripheral velocity definite.For the different rotating manners of rotating rear guide vane, the turnover bicker of rotating rear guide vane blade and the form of blade camber also have nothing in common with each other, and calculate the turnover bicker of rear guide vane blade and the camber of blade according to the principle of velocity triangle.
When axial flow, tiltedly during the work of (mixing) flow fan, air-flow is from entering the annular space at rear guide vane blade 1 place after draught fan impeller 4 flows out, and for free rotating manner, rotating rear guide vane of axial flow fan can flow into 3 rotations around the shaft under the airflow scouring forwardly; To the driven by motor mode and the mode of rotating with the place ahead impeller, because the sense of rotation of rotating rear guide vane of axial flow fan is consistent with the circumferential speed component direction that flows out axial flow, oblique (mixing) flow fan air-flow, so three kinds of rotating manners have all been alleviated the intensity when air-flow collides the rear guide vane blade, reduced axial flow, tiltedly (mixing) flow fan noise with improved their efficient.
Claims (3)
1. rotating rear guide vane of axial flow fan, comprise rear guide vane blade (1), cylinder (2), rotating shaft (3), it is characterized in that rear guide vane blade (1) is fixed on the external peripheral surface of cylinder (2), one end of rotating shaft (3) is fixed in the circular surface center, end of cylinder (2), rotating rear guide vane has three kinds of rotating manners: freely rotate, rotate with driven by motor or with the axial flow fan vane wheel (4) in the place ahead, when rotating rear guide vane was worked with free rotating manner, the other end of rotating shaft (3) linked to each other with bearing; When rotating rear guide vane was worked with driven by motor, the other end of rotating shaft (3) linked to each other with motor shaft; When rotating rear guide vane is worked with the mode of axial flow fan vane wheel (4) rotation in the place ahead, the shared rotating shaft of rotating rear guide vane and impeller (4), for freely rotating and use motor induced way when work, the axle core of rotating shaft (3) and the rotating shaft axle core of impeller (4) are on same straight line; When using driven by motor, the sense of rotation of rotating rear guide vane is consistent with the circumferential speed component direction that flows out axial flow, oblique (mixing) flow fan air-flow.
2. rotating rear guide vane of axial flow fan according to claim 1, it is characterized in that rear guide vane blade (1) is by welding or being riveted on the external peripheral surface of cylinder (2), one end of rotating shaft (3) is by welding or be riveted on the circular surface center of cylinder (2) end, and rear guide vane blade (1), cylinder (2) and rotating shaft (3) also can be made one by casting method.
3. rotating rear guide vane of axial flow fan according to claim 1 is characterized in that the turnover bicker of rotating rear guide vane blade (1) and rotating rear guide vane blade (1) camber are to calculate according to the principle of velocity triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101118020A CN100357612C (en) | 2005-12-22 | 2005-12-22 | Rotating rear guide vane of axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101118020A CN100357612C (en) | 2005-12-22 | 2005-12-22 | Rotating rear guide vane of axial flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1789728A CN1789728A (en) | 2006-06-21 |
| CN100357612C true CN100357612C (en) | 2007-12-26 |
Family
ID=36787793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101118020A Expired - Fee Related CN100357612C (en) | 2005-12-22 | 2005-12-22 | Rotating rear guide vane of axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100357612C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454640B (en) * | 2010-10-28 | 2013-08-21 | 林宸彰 | Flow guiding structure of fan |
| CN110805568B (en) * | 2019-10-18 | 2020-09-18 | 华中科技大学 | Plate-shaped rear guide vane of diagonal flow fan and design method thereof |
| CN113864210A (en) * | 2021-10-19 | 2021-12-31 | 扎赉诺尔煤业有限责任公司 | Fan assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2070838U (en) * | 1990-05-30 | 1991-02-06 | 南海县夏迪电器厂 | Fan of adjusting speed by air damping for wind guide wheel |
| CN2375795Y (en) * | 1998-12-16 | 2000-04-26 | 深圳市金贝丽电器有限公司 | Rotary-blade type electric fan |
| JP2004132190A (en) * | 2002-10-08 | 2004-04-30 | Ebara Corp | Pump with guide vane in combination use as valve |
| JP2004176597A (en) * | 2002-11-26 | 2004-06-24 | Kazuhiko Mori | Air discharge nozzle of blower |
| CN1554872A (en) * | 2003-12-25 | 2004-12-15 | 华中科技大学 | Two-way through flow/axial flow pump |
-
2005
- 2005-12-22 CN CNB2005101118020A patent/CN100357612C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2070838U (en) * | 1990-05-30 | 1991-02-06 | 南海县夏迪电器厂 | Fan of adjusting speed by air damping for wind guide wheel |
| CN2375795Y (en) * | 1998-12-16 | 2000-04-26 | 深圳市金贝丽电器有限公司 | Rotary-blade type electric fan |
| JP2004132190A (en) * | 2002-10-08 | 2004-04-30 | Ebara Corp | Pump with guide vane in combination use as valve |
| JP2004176597A (en) * | 2002-11-26 | 2004-06-24 | Kazuhiko Mori | Air discharge nozzle of blower |
| CN1554872A (en) * | 2003-12-25 | 2004-12-15 | 华中科技大学 | Two-way through flow/axial flow pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1789728A (en) | 2006-06-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: Shanghai Nantai Ventilator Equipment Co., Ltd. Assignor: Shanghai Jiao Tong University Contract fulfillment period: 2008.1.6 to 2013.1.5 contract change Contract record no.: 2009310000174 Denomination of invention: Rotating rear guide vane of axial flow fan Granted publication date: 20071226 License type: Exclusive license Record date: 2009.8.26 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.1.6 TO 2013.1.5; CHANGE OF CONTRACT Name of requester: ON HAINAN NANTAI VENTILATORS EQUIPMENTS CO., LTD. Effective date: 20090826 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071226 Termination date: 20101222 |