CN2448969Y - Vibration-proof aixal-flow blower fan - Google Patents
Vibration-proof aixal-flow blower fan Download PDFInfo
- Publication number
- CN2448969Y CN2448969Y CN 00240945 CN00240945U CN2448969Y CN 2448969 Y CN2448969 Y CN 2448969Y CN 00240945 CN00240945 CN 00240945 CN 00240945 U CN00240945 U CN 00240945U CN 2448969 Y CN2448969 Y CN 2448969Y
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- surge
- utility
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- flow blower
- flow
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- Expired - Fee Related
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Abstract
The utility model relates to a vibration-proof axial-flow blower fan which comprises a shell, wherein, a motor which is arranged inside the shell is connected with an impeller, and the shell is provided with a vibration-proof ring which corresponds to blade tips of blades of the impeller. The operating performance curve of the utility model has no hump or surge zone, and the utility model can operate 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 axial-flow blower.
The design of 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 draft under the metro station tunnel air bells exhauster normal condition, and during the fire operating mode, the parallel running smoke evacuation; And for example the I operation of nuclear power designing requirement axial-flow blower flow must be no more than 15% of flow, but present conventional axial-flow blower is when low flow rate condition, its characteristic is unsettled, performance curve has hump, surge area is promptly arranged, 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 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 axial-flow blower comprises casing, and casing inner electric machine, motor connect impeller, and the difference of itself and prior art is: on the casing of the blade tip leading edge corresponding position of impeller anti-surge ring is set.
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 anti-surge ring among Fig. 1.
A kind of anti-surge axial-flow blower comprises casing 1, casing 1 inner electric machine 2, and motor 2 connects impellers, and impeller comprises cowling 4, wheel hub 5, wing blades 6, on the casing 1 of the blade 6 blade tip leading edge corresponding positions of impeller anti-surge ring 7 is set.Anti-surge ring 7 comprises collection whirlpool groove 8, evenly arrange one group of votex sheet 9 that disappears along garden Zhou Fangxiang in the collection whirlpool groove 8, at votex sheet 9 inboard close blade 6 places that disappear one collector ring 10 is set, also adorns guide ring 11 near blade end in the collection whirlpool groove 8, whole typhoon machine is fixed in the basis by vibration damping holder 3.
Working principle of the present utility model is: 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 in the rectification passage of forming by disappear votex sheet and collector ring, 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.
Claims (2)
1, a kind of anti-surge axial-flow blower comprises casing, and casing inner electric machine, motor connect impeller, it is characterized in that: on the casing of the blade tip leading edge corresponding position of impeller anti-surge ring is set.
2, anti-surge 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 00240945 CN2448969Y (en) | 2000-11-08 | 2000-11-08 | Vibration-proof aixal-flow blower fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00240945 CN2448969Y (en) | 2000-11-08 | 2000-11-08 | Vibration-proof aixal-flow blower fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2448969Y true CN2448969Y (en) | 2001-09-19 |
Family
ID=33601497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00240945 Expired - Fee Related CN2448969Y (en) | 2000-11-08 | 2000-11-08 | Vibration-proof aixal-flow blower fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2448969Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313737C (en) * | 2005-01-27 | 2007-05-02 | 上海交通大学 | Anti-surge ring of axial fan |
| CN104564744A (en) * | 2015-01-23 | 2015-04-29 | 浙江金盾风机股份有限公司 | Axial flow fan for nuclear power station containment continuous ventilation system |
-
2000
- 2000-11-08 CN CN 00240945 patent/CN2448969Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313737C (en) * | 2005-01-27 | 2007-05-02 | 上海交通大学 | Anti-surge ring of axial fan |
| CN104564744A (en) * | 2015-01-23 | 2015-04-29 | 浙江金盾风机股份有限公司 | Axial flow fan for nuclear power station containment continuous ventilation system |
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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 |