JPS575594A - Volute fan - Google Patents
Volute fanInfo
- Publication number
- JPS575594A JPS575594A JP7858480A JP7858480A JPS575594A JP S575594 A JPS575594 A JP S575594A JP 7858480 A JP7858480 A JP 7858480A JP 7858480 A JP7858480 A JP 7858480A JP S575594 A JPS575594 A JP S575594A
- Authority
- JP
- Japan
- Prior art keywords
- impeller
- blade
- revolution
- lower portion
- air
- 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.)
- Pending
Links
Abstract
PURPOSE: To enhance the efficiency of a volute fan, by shaping the lower portions of plural radial blades of an impeller so that the lower portions extend oppositely to the direction of revolution.
CONSTITUTION: An impeller 13 with a plurality of blades 14 is secured on a drive shaft 4 by a nut 15. The lower portion 20 of each blade 14 is bent in the direction of revolution 19 to reduce an impact loss which is caused when a swirl flows onto the blade 14. When the impeller 13 is rotating in the direction 19, air in an air passage flows into the impeller 13 at a relative speed in the direction 21 to become a swirl shown by an arrow 22 in the drawing. Since the lower portion 20 of each blade 14 is bent in the direction of revolution 19 so that the inflow angle of the air to the impeller 13 is equal to the reception angle of the blade 14, the collision loss on the lower portion 20 is reduced. Therefore, the efficiency is improved.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7858480A JPS575594A (en) | 1980-06-10 | 1980-06-10 | Volute fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7858480A JPS575594A (en) | 1980-06-10 | 1980-06-10 | Volute fan |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS575594A true JPS575594A (en) | 1982-01-12 |
Family
ID=13665952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7858480A Pending JPS575594A (en) | 1980-06-10 | 1980-06-10 | Volute fan |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS575594A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5163810A (en) * | 1990-03-28 | 1992-11-17 | Coltec Industries Inc | Toric pump |
US5299908A (en) * | 1990-12-15 | 1994-04-05 | Dowty Defence And Air Systems Limited | Regenerative pump having rotor with blades whose inclination varies radially of the rotor |
US5642981A (en) * | 1994-08-01 | 1997-07-01 | Aisan Kogyo Kabushiki Kaisha | Regenerative pump |
USRE39891E1 (en) * | 2000-08-31 | 2007-10-23 | Delphi Technologies, Inc. | V-blade impeller design for a regenerative turbine |
-
1980
- 1980-06-10 JP JP7858480A patent/JPS575594A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5163810A (en) * | 1990-03-28 | 1992-11-17 | Coltec Industries Inc | Toric pump |
US5299908A (en) * | 1990-12-15 | 1994-04-05 | Dowty Defence And Air Systems Limited | Regenerative pump having rotor with blades whose inclination varies radially of the rotor |
US5642981A (en) * | 1994-08-01 | 1997-07-01 | Aisan Kogyo Kabushiki Kaisha | Regenerative pump |
USRE39891E1 (en) * | 2000-08-31 | 2007-10-23 | Delphi Technologies, Inc. | V-blade impeller design for a regenerative turbine |
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