CN2448968Y - Vibration-proof reservible axial-flow blower fan - Google Patents
Vibration-proof reservible axial-flow blower fan Download PDFInfo
- Publication number
- CN2448968Y CN2448968Y CN 00240944 CN00240944U CN2448968Y CN 2448968 Y CN2448968 Y CN 2448968Y CN 00240944 CN00240944 CN 00240944 CN 00240944 U CN00240944 U CN 00240944U CN 2448968 Y CN2448968 Y CN 2448968Y
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- surge
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- blower fan
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Abstract
The utility model relates to a vibration-proof reversible axial-flow blower fan which comprises a machine shell, wherein, a motor which is arranged inside the shell is connected with an impeller, and the machine shell is respectively provided with a positive direction vibration-proof ring and a reverse direction vibration-proof ring at the place which corresponds to the front and the back edges of blade tips of blades of the impeller. The running performance curve of the utility model has no hump or surge zone, and the utility model can run stably from a zero flow to a maximum running flow. The operating range of the blower fan is increased, and the operating efficiency is favorable. The utility model can operate in a small flow area, and the noise is obviously reduced.
Description
The utility model relates to a kind of reversible axial-flow blower.
The design of reversible axial-flow blower and calculating are carried out on peak efficiency, but in actual motion, blower fan need move under small flow, for example separate unit operation air-supply under the blower fan normal condition, and during the fire operating mode, reverse parallel connection operation smoke evacuation; But present conventional axial-flow blower is when low flow rate condition, and its characteristic is unsettled, and performance curve has hump, and surge area is promptly arranged, and its harmfulness shows: 1. fan performance severe exacerbation, noise are unusual, ventilate, purging system can not normally move; 2. unit judder, the lost of life even cause leaf destruction.
The purpose of this utility model is to provide a kind of ride quality curve not have hump, no surge area, but at the anti-surge reversible axial-flow blower of zero delivery to the equal smooth running of maximum operation flow.
Technical solution of the present utility model is:
A kind of anti-surge reversible axial-flow blower, comprise casing, casing inner electric machine, motor connect impeller, and its difference with prior art is: on the casing of the blade tip front and rear edges corresponding position of impeller forward anti-surge ring and reverse anti-surge ring are set respectively.
Anti-surge ring comprises collection whirlpool groove, collects in the groove of whirlpool and evenly arranges one group of votex sheet that disappears along garden Zhou Fangxiang, and inboard close blade place is provided with a collector ring at the votex sheet that disappears, and also adorns guide ring near blade end in the groove of collection whirlpool.
The utility model ride quality curve does not have hump, no surge area, but move all smooth runnings of flow in zero delivery to maximum, the fan operation scope increases greatly, and operational efficiency is good, and the rill zone can normally be moved, and noise is obviously lower.Use in the important ventilation fields such as subway, nuclear power that are specially adapted to.
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is an embodiment's of the utility model a configuration diagram.
Fig. 2 is the configuration diagram of forward and reverse anti-surge ring among Fig. 1.
A kind of anti-surge reversible axial-flow blower, comprise casing 1, casing 1 inner electric machine 2, motor 2 connects impeller, impeller comprises cowling 4, wheel hub 5, symmetry machine airfoil fan 6, and forward anti-surge ring 7 and reverse anti-surge ring 8 are set respectively on the casing 1 of the blade 6 blade tip front and rear edges corresponding positions of impeller.Forward anti-surge ring 8 comprises collection whirlpool groove 9, collects in the whirlpool groove 9 and evenly arranges one group of votex sheet 12 that disappears along garden Zhou Fangxiang, at votex sheet 12 inboard close blade 6 places that disappear one collector ring 11 is set, and also adorns guide ring 10 near blade end in the collection whirlpool groove 9; Oppositely anti-surge ring 8 comprises collection whirlpool groove 13, collects in the whirlpool groove 13 and evenly arranges one group of votex sheet 16 that disappears along garden Zhou Fangxiang, at the votex sheet 16 inboard close blade places that disappear one collector ring 15 is set, and also adorns guide ring 14 near blade end in the collection whirlpool groove 13; Whole typhoon machine is fixed in the basis by vibration damping holder 3.
Working principle of the present utility model is (with forward operation explanation): blower fan is when the small flow operating conditions, place, blade and blade top separates the eddy current that occurs owing to rotation, under action of centrifugal force, enter forward anti-surge ring 7, under guide ring 10 effects, enter in the rectification passage of forming by disappear votex sheet 12 and collector ring 11, eddy current through blend with rectification after, turn back in the main air flow, the development that rotation separates is eliminated, thereby eliminated the unstable operation district (surge area) of conventional blower fan, made the performance curve of blower fan not have hump-trench; Because of blower fan is that reversible needs inverted running, so establish a reverse anti-surge ring 8, be responsible for reverse anti-surge function, its principle is with forward anti-surge ring 7.
Claims (2)
1, a kind of anti-surge reversible axial-flow blower comprises casing, and casing inner electric machine, motor connect impeller, it is characterized in that: forward anti-surge ring and reverse anti-surge ring are set respectively on the casing of the blade tip front and rear edges corresponding position of impeller.
2, anti-surge reversible axial-flow blower according to claim 1, it is characterized in that: anti-surge ring comprises collection whirlpool groove, evenly arrange one group of votex sheet that disappears along garden Zhou Fangxiang in the groove of collection whirlpool, near the blade place one collector ring is set, also adorn guide ring near blade end in the groove of collection whirlpool in the votex sheet inboard that disappears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00240944 CN2448968Y (en) | 2000-11-08 | 2000-11-08 | Vibration-proof reservible axial-flow blower fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00240944 CN2448968Y (en) | 2000-11-08 | 2000-11-08 | Vibration-proof reservible axial-flow blower fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2448968Y true CN2448968Y (en) | 2001-09-19 |
Family
ID=33601496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00240944 Expired - Fee Related CN2448968Y (en) | 2000-11-08 | 2000-11-08 | Vibration-proof reservible axial-flow blower fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2448968Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821773A (en) * | 2014-02-17 | 2014-05-28 | 南通大通宝富风机有限公司 | Control rod drive mechanism cooling fan with diffuser tail cone |
| CN105065302A (en) * | 2015-08-06 | 2015-11-18 | 浙江上风高科专风实业有限公司 | Efficient sweepforward-type subway tunnel axial flow fan |
| WO2016127660A1 (en) * | 2015-02-10 | 2016-08-18 | 南通大通宝富风机有限公司 | Centrifugal fan cast-steel volute structure having straightening ring |
| CN106151112A (en) * | 2016-08-29 | 2016-11-23 | 中国能源建设集团广东省电力设计研究院有限公司 | The anti-stall device of axial flow blower and control method thereof |
-
2000
- 2000-11-08 CN CN 00240944 patent/CN2448968Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821773A (en) * | 2014-02-17 | 2014-05-28 | 南通大通宝富风机有限公司 | Control rod drive mechanism cooling fan with diffuser tail cone |
| WO2016127660A1 (en) * | 2015-02-10 | 2016-08-18 | 南通大通宝富风机有限公司 | Centrifugal fan cast-steel volute structure having straightening ring |
| CN105065302A (en) * | 2015-08-06 | 2015-11-18 | 浙江上风高科专风实业有限公司 | Efficient sweepforward-type subway tunnel axial flow fan |
| CN105065302B (en) * | 2015-08-06 | 2018-01-16 | 浙江上风高科专风实业有限公司 | A kind of efficiently sweepforward type subway tunnel axial flow blower |
| CN106151112A (en) * | 2016-08-29 | 2016-11-23 | 中国能源建设集团广东省电力设计研究院有限公司 | The anti-stall device of axial flow blower and control method thereof |
| CN106151112B (en) * | 2016-08-29 | 2020-02-18 | 中国能源建设集团广东省电力设计研究院有限公司 | Anti-stall device of axial flow fan and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |