CN102808804A - Serial blade rotor impeller and axial flow fan - Google Patents
Serial blade rotor impeller and axial flow fan Download PDFInfo
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- CN102808804A CN102808804A CN2012102831392A CN201210283139A CN102808804A CN 102808804 A CN102808804 A CN 102808804A CN 2012102831392 A CN2012102831392 A CN 2012102831392A CN 201210283139 A CN201210283139 A CN 201210283139A CN 102808804 A CN102808804 A CN 102808804A
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Abstract
The invention provides a serial blade rotor impeller and an axial flow fan provided with the impeller. The impeller is provided with blades in the front row and blades in the back row. The blades in the front row and the blades in the back row are circumferentially and uniformly distributed on a wheel hub. The front edges of the blades in the back row are arranged in passages formed by every two adjacent blades in the front row and are close to the pressure sides of the blades. The circumferential distances of the front edges of the blades in the back row and the back edges of the blades at the pressure sides of the passages in the front row are equal to 10%-50% of the lattice spacings of the blades in the front row. According to the serial blade rotor impeller, the blades in the front row and the blades in the back row are reasonably arranged in series, jet flow is formed in gaps between the pressure sides of the blades in the front row and the suction sides of the blades in the back row, so that the jet flow is beneficial to inhibiting the flow separation of the suction sides of the blades in the back row, thereby realizing the great turning angle flow of airflow along the rotor blades. The tangential velocity of a traditional axial flow fan impeller used for mine is reduced, or the levels are decreased, so that the fan noise is reduced.
Description
Technical field
The present invention relates to the blade fluid machinery technical field, particularly a kind of tandem vane rotor impeller and axial-flow blower that can be applicable to coalmine ventilation.
Background technique
Ventilation system is not only colliery " lungs ", and is colliery " big power consumer ".For guaranteeing safe, the energy-conservation and environmental protection in colliery, need high blast, high efficiency and low noise axial fan badly.
The patent documentation of notification number CN87214439 discloses a kind of one-way shaft flow fan that the anti-surge structure is arranged; Be characterized on the casing in blade center line the place ahead of impeller, being provided with one by water conservancy diversion outer shroud, water conservancy diversion in the bypass water conservancy diversion path that constitutes of several guide vanes of ring and two interannulars thereof; Can make the air communication that is blocked in the impeller blade tip cross the main flow direction that this bypass water conservancy diversion path flows into the one-way shaft flow fan; The operation area of blower fan has been expanded in the generation of surge when having solved the blower fan small flow.
The patent documentation of notification number CN2447545 discloses a kind of combined type axial flow fan vane wheel; Mainly form by wheel hub plate, blade, wheel hub axle sleeve; Wheel hub plate is fixed in hub spindle and puts, and wheel hub plate is by two affixed forming of semi-hub disk, evenly is provided with circular hole along the periphery of wheel hub plate; Root of blade is the column that matches with circular hole, and root of blade is fixed on the circular hole of wheel hub plate periphery.This model utility has the blade that varying number can be installed, and blade can have multiple different setting angle, through the reverse installation of blade being changed airflow direction, the advantage that the seriation design of fan brings convenience.
Yet, pursue higher blast and improve fan efficiency and reduce between the noise and have certain contradiction.At present, the mode of raising axial-flow blower blast mainly comprises three kinds: the peripheral velocity, the increase blower fan sum of series that improve the draught fan impeller blade tip improve blower fan single-stage load.The peripheral velocity that improves the impeller blade tip will cause the bigger import relative Mach number of impeller, will produce totally unfavorable influence to fan efficiency and noise; Increase blower fan progression, change the sound interference effect between the stator, worsen fan performance and produce extra noise source, increased the blower fan axial dimension simultaneously increasing blower fan; Improve blower fan single-stage load; Promptly strengthen air-flow deflection angle in the impeller of rotor path; To help reducing impeller blade tip circumferential speed or reduce blower fan progression; Be to promote fan efficiency and the important means that reduces noise, but the lifting of stage load receives the restriction of diffusion factor in the leaf grating path, otherwise fan performance will sharply worsen.Therefore, how reasonably to arrange impeller of rotor blade pass line structure, breaking through traditional axial-flow blower single-stage load bottleneck is the problem that the present invention will solve.
Summary of the invention
The objective of the invention is to reasonably arrange impeller of rotor blade pass line structure, break through traditional axial-flow blower single-stage load bottleneck,, and then reduce fan noise with tangential velocity or the minimizing progression of realizing the traditional mining axial flow fan vane wheel of reduction.
For realizing above-mentioned purpose; The present invention provides a kind of tandem vane rotor impeller that is used for axial-flow blower, has front-seat blade and back row's blade, it is characterized in that; Said front-seat blade circumferentially is arranged on the wheel hub with row's blade edge, back equably; The leading edge of back row's blade is disposed in the path of front-seat adjacent two blades formation, and near the blade pressure surface side, the circumferential distance of back row's blade inlet edge and front-seat gallery pressure face lateral lobe sheet trailing edge equals 10%～50% of front-seat tangential blade space.
Be preferably, front and back two row's blades constitute by fin, and both numbers of blade equate that blade angle turnover direction is identical.
The present invention also provides a kind of axial-flow blower, comprises tandem vane rotor impeller, blower fan urceolus, motor and transmission shaft with above-mentioned characteristic.
The invention has the advantages that: the tandem configuration forms said tandem vane rotor impeller through carrying out front-seat blade and back row's blade reasonably; Gap between front-seat blade pressure surface and back row's blade suction surface forms jet; Help suppressing the flow separation of back row's blade suction surface, realize that air-flow is moving along the large turn angular flux of rotor blade; And reduce the tangential velocity of traditional mining axial flow fan vane wheel or reduce progression, and then reduce fan noise.
Description of drawings
Fig. 1 is the stereogram of the said tandem vane rotor of one embodiment of the invention.
Fig. 2 is the structural representation of the said axial-flow blower of one embodiment of the invention.
Fig. 3 is the front-seat blade of said tandem vane rotor and the schematic representation of back row's blade relative position in a circumferential direction.
Among the figure, the 1-wheel hub; The front-seat blade of 2-; Arrange blade behind the 3-; 4-blower fan urceolus; The 5-motor; The 6-transmission shaft.
Embodiment
Below, in conjunction with accompanying drawing 1～3 and embodiment, specific embodiments of the invention is described in detail.
Fig. 1 and Fig. 2 illustrate an embodiment who has the impeller of rotor of tandem blade and have the axial-flow blower of said impeller of rotor of the present invention, and said axial-flow blower comprises tandem vane rotor impeller, blower fan urceolus 4, motor 5 and the transmission shaft of being made up of wheel hub 1, front-seat blade 2 and back row's blade 36.Front-seat blade 2 is arranged blade 3 along circumferentially being arranged in equably on the wheel hub 1 with the back, and front-seat blade 2 all adopts tab construction with back row's blade 3, and the number of blade is equal, and blade angle turnover direction is identical.The leading edge of back row's blade 3 is disposed in the path of front-seat adjacent two front-seat blades formation; And near the pressure side side of front-seat blade 2; As shown in Figure 3, the circumferential distance s between the gallery pressure face side trailing edge of back row's blade 3 leading edges and front-seat blade 2 equals 10%～50% of front-seat blade 2 pitch t.
The present invention is not limited to above-mentioned mode of execution, and under the situation that does not deviate from flesh and blood of the present invention, any distortion that those skilled in the art can expect, improvement, replacement all fall into scope of the present invention.
Claims (3)
1. tandem vane rotor impeller that is used for axial-flow blower; Have front-seat blade and back row's blade; It is characterized in that said front-seat blade is arranged blade along circumferentially being arranged in equably on the wheel hub with the back, the leading edge of back row's blade is disposed in the passage of front-seat adjacent two blades formation; And near the blade pressure surface side, the circumferential distance of back row's blade inlet edge and front-seat blade path pressure side side trailing edge equals 10%～50% of front-seat tangential blade space.
2. tandem vane rotor impeller according to claim 1 is characterized in that, front and back two row's blades are made up of fin respectively, and both numbers of blade equate that blade angle turnover direction is identical.
3. an axial-flow blower is characterized in that, comprises claim 1 or 2 described tandem vane rotor impellers, blower fan urceolus, motor and transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102831392A CN102808804A (en) | 2012-08-09 | 2012-08-09 | Serial blade rotor impeller and axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102831392A CN102808804A (en) | 2012-08-09 | 2012-08-09 | Serial blade rotor impeller and axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102808804A true CN102808804A (en) | 2012-12-05 |
Family
ID=47232625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102831392A Pending CN102808804A (en) | 2012-08-09 | 2012-08-09 | Serial blade rotor impeller and axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102808804A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678074A (en) * | 2017-02-22 | 2017-05-17 | 宁波高泰电器有限公司 | Fan blade and duct air feeding device applying same |
| CN110298051A (en) * | 2018-08-09 | 2019-10-01 | 上海交通大学 | Tandem Blades To An Aeroengine relative position design optimization method |
| CN113374716A (en) * | 2021-05-17 | 2021-09-10 | 佛山市南海区天洋电机制造有限公司 | High-speed motor and hair dryer |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1085390A (en) * | 1965-09-18 | 1967-09-27 | Turbowerke Meia En Veb | A rotor or stator for axial flow machines, particularly for extractors and blowers |
| US3830587A (en) * | 1971-12-20 | 1974-08-20 | Hudson Products Corp | Axial flow fan assembly |
| US3867062A (en) * | 1971-09-24 | 1975-02-18 | Theodor H Troller | High energy axial flow transfer stage |
| DE3015208A1 (en) * | 1980-04-19 | 1981-11-05 | Hans Joachim 7440 Nürtingen Leithner | Plastics blade for axial flow fan - has wire mesh in plastics skin connected to earthed metal to remove static electric charges |
| US4451202A (en) * | 1978-12-23 | 1984-05-29 | Sueddeutsche Kuehlerfabrik, Julius Fr. Behr Gmbh & Co. Kg | Axial cooling fan for internal combustion engines |
| US5885058A (en) * | 1995-12-28 | 1999-03-23 | Institute Francais Du Petrole | Multiphase fluid pumping or compression device with blades of tandem design |
| CN1323953A (en) * | 2001-07-05 | 2001-11-28 | 上海交通大学 | Combined forward and reverse cascades for axial-flower blower |
| CN102108978A (en) * | 2011-04-11 | 2011-06-29 | 宣伯民 | Axial flow fan with secondary fan blades |
| CN202746288U (en) * | 2012-08-09 | 2013-02-20 | 势加透博（北京）科技有限公司 | Tandem blade rotor impeller and axial flow fan |
-
2012
- 2012-08-09 CN CN2012102831392A patent/CN102808804A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1085390A (en) * | 1965-09-18 | 1967-09-27 | Turbowerke Meia En Veb | A rotor or stator for axial flow machines, particularly for extractors and blowers |
| US3867062A (en) * | 1971-09-24 | 1975-02-18 | Theodor H Troller | High energy axial flow transfer stage |
| US3830587A (en) * | 1971-12-20 | 1974-08-20 | Hudson Products Corp | Axial flow fan assembly |
| US4451202A (en) * | 1978-12-23 | 1984-05-29 | Sueddeutsche Kuehlerfabrik, Julius Fr. Behr Gmbh & Co. Kg | Axial cooling fan for internal combustion engines |
| DE3015208A1 (en) * | 1980-04-19 | 1981-11-05 | Hans Joachim 7440 Nürtingen Leithner | Plastics blade for axial flow fan - has wire mesh in plastics skin connected to earthed metal to remove static electric charges |
| US5885058A (en) * | 1995-12-28 | 1999-03-23 | Institute Francais Du Petrole | Multiphase fluid pumping or compression device with blades of tandem design |
| CN1323953A (en) * | 2001-07-05 | 2001-11-28 | 上海交通大学 | Combined forward and reverse cascades for axial-flower blower |
| CN102108978A (en) * | 2011-04-11 | 2011-06-29 | 宣伯民 | Axial flow fan with secondary fan blades |
| CN202746288U (en) * | 2012-08-09 | 2013-02-20 | 势加透博（北京）科技有限公司 | Tandem blade rotor impeller and axial flow fan |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678074A (en) * | 2017-02-22 | 2017-05-17 | 宁波高泰电器有限公司 | Fan blade and duct air feeding device applying same |
| CN110298051A (en) * | 2018-08-09 | 2019-10-01 | 上海交通大学 | Tandem Blades To An Aeroengine relative position design optimization method |
| CN113374716A (en) * | 2021-05-17 | 2021-09-10 | 佛山市南海区天洋电机制造有限公司 | High-speed motor and hair dryer |
| CN113374716B (en) * | 2021-05-17 | 2023-11-03 | 广东天洋电机有限公司 | High-speed motor and blower |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121205 |