JPS5666494A - Impeller for centrifugal compressor - Google Patents
Impeller for centrifugal compressorInfo
- Publication number
- JPS5666494A JPS5666494A JP14133179A JP14133179A JPS5666494A JP S5666494 A JPS5666494 A JP S5666494A JP 14133179 A JP14133179 A JP 14133179A JP 14133179 A JP14133179 A JP 14133179A JP S5666494 A JPS5666494 A JP S5666494A
- Authority
- JP
- Japan
- Prior art keywords
- negative
- pressure surface
- projections
- blades
- impeller
- 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
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
PURPOSE: To enlarge the operational range of the compressor, by preventing separation of laminar flow on the negative-pressure surface, particularly, of the three- dimentional impeller and to thereby delaying occurrence of surging through provision of a plurality of projections on the negative-pressure surface of blades at the part thereof near the leading edge.
CONSTITUTION: A plurality of rib-shaped projections 13 are formed on the negative- pressure surface 11 of the blades at the part thereof near the leading edge. Alternatively, it is also possible to provide a plurality of conical projections having a small size substantially equal to the thickness of the boundary layer on the aforementioned negative-pressure surface 11. Through provision of such rib-shaped projections 13 or conical projections, the boundary layer on the negative-pressure surface of the blades is disturbed by turbulence produced by the projections, and separation of the laminar layer on the negative-pressure surface can be prevented if the relative velocity of fluid flow is lowered considerably with reduction of fluid flow rate. Therefore, it is enabled to delay occurrence of surging and hence to enlarge the operational range of the compressor.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14133179A JPS5666494A (en) | 1979-11-02 | 1979-11-02 | Impeller for centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14133179A JPS5666494A (en) | 1979-11-02 | 1979-11-02 | Impeller for centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5666494A true JPS5666494A (en) | 1981-06-04 |
Family
ID=15289453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14133179A Pending JPS5666494A (en) | 1979-11-02 | 1979-11-02 | Impeller for centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5666494A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60166793A (en) * | 1984-02-10 | 1985-08-30 | Ebara Corp | Vane wheel of centrifugal compressor |
| WO1996000854A1 (en) * | 1994-06-30 | 1996-01-11 | Toto Ltd. | Multivane centrifugal fan |
| JP2008069709A (en) * | 2006-09-14 | 2008-03-27 | Topre Corp | Impeller for centrifugal fan |
| US8118560B2 (en) | 2006-04-17 | 2012-02-21 | Ihi Corporation | Blade |
| US9371834B2 (en) | 2010-05-03 | 2016-06-21 | Alfa Laval Corporate Ab | Centrifugal pump |
-
1979
- 1979-11-02 JP JP14133179A patent/JPS5666494A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60166793A (en) * | 1984-02-10 | 1985-08-30 | Ebara Corp | Vane wheel of centrifugal compressor |
| WO1996000854A1 (en) * | 1994-06-30 | 1996-01-11 | Toto Ltd. | Multivane centrifugal fan |
| US8118560B2 (en) | 2006-04-17 | 2012-02-21 | Ihi Corporation | Blade |
| JP2008069709A (en) * | 2006-09-14 | 2008-03-27 | Topre Corp | Impeller for centrifugal fan |
| US9371834B2 (en) | 2010-05-03 | 2016-06-21 | Alfa Laval Corporate Ab | Centrifugal pump |
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