CN201212489Y - Axial flow fan for reducing energy consumption and noise - Google Patents
Axial flow fan for reducing energy consumption and noise Download PDFInfo
- Publication number
- CN201212489Y CN201212489Y CNU200820008331XU CN200820008331U CN201212489Y CN 201212489 Y CN201212489 Y CN 201212489Y CN U200820008331X U CNU200820008331X U CN U200820008331XU CN 200820008331 U CN200820008331 U CN 200820008331U CN 201212489 Y CN201212489 Y CN 201212489Y
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- CN
- China
- Prior art keywords
- blade
- axial fan
- noise
- negative pressure
- axial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
Abstract
The utility model relates to an axial fan reducing energy consumption and noise, which is characterized in that the included angle beta between the negative pressure face of a blade and the radial direction of the axial fan is between 0 degree and 90 degrees, or the average included angle beta between the negative pressure face of the blade and the radial direction of the axial fan is between 0 degree to 90 degrees. An original axial fan with a single side arc-shaped blade side blade structure does not ensure expectant energy saving and noise reducing effects in the technology aspect. Though a great deal of researches, the application discovers that the axial fan with the single side arc-shaped blade side blade structure has the range of the included angle beta and the range of a best included angle beta for the energy saving and noise reducing effects. Experiment data indicate that the axial fan with the single side arc-shaped blade side blade structure which is adopted in the range of the included angle beta of the application can reduce energy and noise in vast scale. Under the same air input condition, the energy and noise are reduced more than 50 percent. The axial fan with the singe side arc-shaped blade side blade structure is suitable for various axial fans, axial fanners and various axial liquid transporting or stirring mechanisms.
Description
Affiliated technical field
The utility model relates to a kind of axial fan, especially can improve the efficient of axial fan, cuts down the consumption of energy and the technology of noise.
Background technique
The inventor cooperates to have submitted a patent application in 2000 to China Intellectual Property Office with other inventors, denomination of invention " high-performance propeller cavitation ", number of patent application CN00111209.0, calendar year 2001 is submitted international patent application to, international application no: pct/cn01/00112, application in the U.S. is authorized, patent No. US6866482B2, title: HIGN-PERFORMENCEPROPELLER.This application relates to a kind of axial fan technology with monolateral arc limb blade structure, and present techniques is further developing on above-mentioned technical foundation.
Position, movement locus, kinetic characteristic to monolateral arc limb in the international specification referred have following description: " the basic and propeller cavitation concentric of limb each several part; limb function same section substantially on identical turning radius, requires limb only to produce surface friction drag in sense of rotation at the propeller cavitation axis projection in principle.Have under the situation of inclination angle at limb, limb can produce the shape power that increases or reduce blade end of blade pressure.As required, limb can suitably launch with approximate involute pattern in the blade sense of rotation ".
Summary of the invention
Foregoing axial fan technology with monolateral arc limb blade structure, in experiment, find the monolateral arc limb of identical shape and structure, on a part of axial fan, use that the energy-saving and noise-reducing effect is very good, and on another part axial fan, but do not have the energy-saving and noise-reducing effect.Owing to unclear is what reason, therefore can't safe design this have the energy-saving and noise-reducing effect axial fan, seriously hindered this The Application of Technology.
The utility model is pinpointed the problems irrelevant with monolateral arc limb structure, shape, position, space motion path etc. by a large amount of development tests, by a large amount of tests with discover that the angle β between blade negative pressure face and axial fan are radially has key effect to the energy-conserving action effect, when angle β be on the occasion of, the axial fan of monolateral arc limb blade structure has extraordinary energy-saving and noise-reducing effect, as shown in Figure 1; When angle β is a negative value, the axial fan energy-saving and noise-reducing effect of monolateral arc limb blade structure is very little, does not even have the energy-saving and noise-reducing effect, as shown in Figure 2.
Discovering, is under situation at angle β, and blade negative pressure face can access sufficient fluid and replenish, and the pressure absolute value of blade negative pressure face is reduced, and resists, blade resistance and energy consumption all are reduced thereby reduced blade pressure.Because the pressure absolute value of blade negative pressure face reduces, reduce with the pressure difference of surrounding space, fluid reduces to the moving speed of blade negative pressure surface current, the therefore also corresponding reduction of strength of vortex that produces, noise also obtains corresponding reduction.The above-mentioned blade end of blade most pronounced effects that acts on, because be that the fan linear velocity is the fastest here, the every active force maximum that produces, the position that pressure gradient is also maximum, and in the roulette velocity range that most fans use, therefore the active force that blade negative pressure face produces reduces blade negative pressure face pressure absolute value, energy-saving and noise-reducing effect highly significant much larger than the positive pressure face.
The technological scheme that its technical problem that solves the utility model adopts is: the axial fan blade with monolateral arc limb blade structure, this blade negative pressure face and the axial fan angle β between radially at 0 degree between 90 degree, or axial fan blade with monolateral arc limb blade structure, this blade negative pressure face and the axial fan average angle β between radially at 0 degree between 90 degree, research and test find angle β or average angle β angle numerical value optimum range at 6 degree between 50 degree.
The beneficial effects of the utility model are, for monolateral arc limb blade The Application of Technology has been cleared away technology barrier, for manufacture and design high efficiency, the low noise axial fan is laid a good foundation and feasible embodiment is provided, avoided under the unclear situation of energy-saving and noise-reducing principle, do not have under the reliable technical application scheme condition, blindly design the loss that causes, make monolateral this energy-saving and noise-reducing technology of arc limb blade reach application level.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 be blade negative pressure face and the axial fan angle β between radially on the occasion of diagram.
Fig. 2 is that blade negative pressure face and the axial fan angle β between radially is the diagram of negative value.
Fig. 3 is that the surface of monolateral arc limb and blade negative pressure face link position is under the curve form situation, the diagram of blade negative pressure face and the fan average angle β between radially.
Fig. 4 is that blade negative pressure face is under the curve form situation, the diagram of blade negative pressure face and the fan average angle β between radially.
Fig. 5 adopts monolateral arc limb and the into a single integrated structure blade of paddle-shaped, does not have obvious separatrix between monolateral arc limb and the blade, in the case, and the diagram of blade negative pressure face and the axial fan average angle β between radially.
Fig. 6 is a title and concrete corresponding position schematic representation of describing the axial fan each several part employing of monolateral arc limb blade structure.
1. blades among the figure, 2. propeller hub, 3. propeller shank, 4. blade tips, 5. monolateral arc limb, 6. by axial fan radially to the moving fluid of blade negative pressure surface current, 7. blade negative pressure face.
Embodiment
In the embodiment shown in fig. 1, have the negative pressure face (7) of blade (1) of monolateral arc limb and axial fan radially between angle β angle numerical value on the occasion of, outside by blade tips (4), can arrive the boundary layer of blade negative pressure face (7) along the fluid (6) of axial fan Radial Flow, can reduce the pressure absolute value of blade negative pressure face (7), reduce the pressure opposing of blade, thereby reduce the blade resistance, reduce the blade energy consumption, reduce noise.
Shown in Figure 2, blade negative pressure face (7) and axial fan radially between the angle numerical value of angle β be negative value.By the outside of blade tips (4), can not arrive the boundary layer of blade negative pressure face (7) along the fluid (6) of axial fan Radial Flow, the pressure of blade negative pressure face (7) does not have to change substantially, does not therefore have the energy-saving and noise-reducing effect.
In the embodiment shown in fig. 3, blade negative pressure face (7) and axial fan radially between the angle numerical value of average angle β be on the occasion of, monolateral arc limb (5) is a curve form with blade negative pressure face (7) link position surface, along this curve form to the moving fluid of blade negative pressure surface current, energy loss is little, the eddy current vorticity reduces, and the energy-saving and noise-reducing effect further improves.
In the embodiment shown in fig. 4, blade negative pressure face and axial fan radially between the angle numerical value of average angle β be on the occasion of, monolateral arc limb (5) axial fan relatively axially has camber angle, fluid is moving to blade negative pressure surface current with the curved surface that blade negative pressure face link position surface constitutes along monolateral arc limb (5) and monolateral arc limb (5), energy loss is littler, and the energy-saving and noise-reducing effect further improves.
In the embodiment shown in fig. 5, monolateral arc limb and the into a single integrated structure blade of paddle-shaped, there is not obvious separatrix between monolateral arc limb and the blade, blade negative pressure face becomes curve form with monolateral arc limb integral body, integrative-structure blade negative pressure face and fan radially between the angle numerical value of average angle β be on the occasion of, in propeller shank (3) and mid blade near propeller hub, blade negative pressure face and fan radially between the angle numerical value of average angle β be negative value, because angle β is that negative loop blade linear velocity is lower, influence does not play a major role to the whole energy noise reduction, and axial fan integral body still has energy-saving and noise-reducing effect preferably.
Axial flow compressor adopts this technology, the particularly first order, can increase the fluid intake, reduces tip clearance leakage loss, reduces power consumption, improves compression performance.
The utility model technology can be applied to fluid machineries such as the propeller cavitation, axial-flow blower, axial flow blower, axial flow compressor, fan, axial-flow pump, Pneumatic extinguisher of various FLUID TRANSPORTATION purposes, or the fluid machinery of various stirred fluids.The utility model blade can adopt method manufacturings such as casting, die casting, injection moulding, punching press, machine cut, welding.
Illustrate:
Average angle β: line and the axial fan angle radially of getting the curve two ends are average angle β; Or get the tangent line of curve each point and the mean value of axial fan angle radially is average angle β.
The utility model setting shaft flow fan axially is orthogonal with axial fan radially.
Claims (2)
1. one kind cuts down the consumption of energy and the axial fan of noise, some blades (1) are installed on propeller hub (2), monolateral arc limb (5) is arranged on blade (1), or the blade that some monolateral arc limbs (5) and blade (1) form integrative-structure is installed on propeller hub (2), it is characterized in that: between 90 degree, or blade negative pressure face and the axial fan average angle β between radially is between spend to 90 by 0 degree at 0 degree for blade negative pressure face and the axial fan angle β between radially.
2. axial fan according to claim 1 is characterized in that: between 50 degree, or blade negative pressure face and the axial fan average angle β between radially is between spend to 50 by 6 degree at 6 degree for blade negative pressure face and the axial fan angle β between radially.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820008331XU CN201212489Y (en) | 2008-03-12 | 2008-03-12 | Axial flow fan for reducing energy consumption and noise |
| PCT/CN2009/070153 WO2009111956A1 (en) | 2008-03-12 | 2009-01-15 | An axial flow fan for decreasing the noise and the energy consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820008331XU CN201212489Y (en) | 2008-03-12 | 2008-03-12 | Axial flow fan for reducing energy consumption and noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201212489Y true CN201212489Y (en) | 2009-03-25 |
Family
ID=40496660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820008331XU Expired - Fee Related CN201212489Y (en) | 2008-03-12 | 2008-03-12 | Axial flow fan for reducing energy consumption and noise |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201212489Y (en) |
| WO (1) | WO2009111956A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825114A (en) * | 2009-03-06 | 2010-09-08 | 韩玮 | Axial flow fan capable of reducing energy consumption and noise |
| CN102278329A (en) * | 2010-06-14 | 2011-12-14 | 何仁城 | Method and device for changing pressure intensity of fluid on surface and power system using device |
| CN102652093A (en) * | 2009-12-21 | 2012-08-29 | 波音公司 | Optimization of downstream open fan propeller position |
| CN104139849A (en) * | 2014-08-07 | 2014-11-12 | 西北工业大学 | High-altitude propeller and propeller tip winglet capable of improving efficiency of high-altitude propeller |
| CN104329276A (en) * | 2014-11-28 | 2015-02-04 | 德清振达电气有限公司 | Efficient mute axial flow fan |
| CN104358712A (en) * | 2014-11-28 | 2015-02-18 | 德清振达电气有限公司 | Fan blade of safe and high-efficiency axial flow fan |
| CN104389821A (en) * | 2014-11-28 | 2015-03-04 | 德清振达电气有限公司 | Silent axial fan blade |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010034604A1 (en) * | 2010-08-13 | 2012-02-16 | Ziehl-Abegg Ag | Impeller for a fan |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5622499U (en) * | 1979-07-27 | 1981-02-27 | ||
| JPS59185898A (en) * | 1983-04-08 | 1984-10-22 | Aisin Seiki Co Ltd | Fan blade |
| FR2723150B1 (en) * | 1994-07-29 | 1996-09-06 | Morin Philippe | FAN PROPELLER BLADE |
| CN2437887Y (en) * | 2000-07-10 | 2001-07-04 | 安徽天大(集团)股份有限公司工程塑料厂 | Axial ventilator with hemmed blade |
-
2008
- 2008-03-12 CN CNU200820008331XU patent/CN201212489Y/en not_active Expired - Fee Related
-
2009
- 2009-01-15 WO PCT/CN2009/070153 patent/WO2009111956A1/en active Application Filing
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825114A (en) * | 2009-03-06 | 2010-09-08 | 韩玮 | Axial flow fan capable of reducing energy consumption and noise |
| CN102652093A (en) * | 2009-12-21 | 2012-08-29 | 波音公司 | Optimization of downstream open fan propeller position |
| CN102652093B (en) * | 2009-12-21 | 2015-09-02 | 波音公司 | The optimization of downstream open fan propeller position |
| CN102278329A (en) * | 2010-06-14 | 2011-12-14 | 何仁城 | Method and device for changing pressure intensity of fluid on surface and power system using device |
| CN104139849A (en) * | 2014-08-07 | 2014-11-12 | 西北工业大学 | High-altitude propeller and propeller tip winglet capable of improving efficiency of high-altitude propeller |
| CN104329276A (en) * | 2014-11-28 | 2015-02-04 | 德清振达电气有限公司 | Efficient mute axial flow fan |
| CN104358712A (en) * | 2014-11-28 | 2015-02-18 | 德清振达电气有限公司 | Fan blade of safe and high-efficiency axial flow fan |
| CN104389821A (en) * | 2014-11-28 | 2015-03-04 | 德清振达电气有限公司 | Silent axial fan blade |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009111956A1 (en) | 2009-09-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Han Wei Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Han Wei Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090325 Termination date: 20110312 |