JPS55107099A - Blower driven by electric motor - Google Patents
Blower driven by electric motorInfo
- Publication number
- JPS55107099A JPS55107099A JP1370479A JP1370479A JPS55107099A JP S55107099 A JPS55107099 A JP S55107099A JP 1370479 A JP1370479 A JP 1370479A JP 1370479 A JP1370479 A JP 1370479A JP S55107099 A JPS55107099 A JP S55107099A
- Authority
- JP
- Japan
- Prior art keywords
- air flow
- vane
- air
- collision
- fan
- 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 reduce noise developed by air flow collision by providing a notch in the peripheral end of a fan which disturbs the state of air flow at the discharge and diffuses thereby the energy with which the air pulses collide with the tongue.
CONSTITUTION: The fan 4 consists of three parts, the front shroud 8, vane 9, and rear shroud 10. A rectangular notch 13 is made near the outlet 11 of the vane 9 as shown in the figure, and at the same time the front shroud 8 is mounted along the upper curved face of the vane 9 to form a concave face that faces the inlet 12. By this configuration the state of air flow at the discharge near the fan outlet becomes not uniform, and, as shown in the figure, the air flow develops into air pulses that are nearly its three divisions and collides with the tongue. The energy at the time of the collision is, therefore, diffused and loudness of the sound that was developed by air collision is reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1370479A JPS55107099A (en) | 1979-02-07 | 1979-02-07 | Blower driven by electric motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1370479A JPS55107099A (en) | 1979-02-07 | 1979-02-07 | Blower driven by electric motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55107099A true JPS55107099A (en) | 1980-08-16 |
Family
ID=11840589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1370479A Pending JPS55107099A (en) | 1979-02-07 | 1979-02-07 | Blower driven by electric motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55107099A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0795688A3 (en) * | 1993-10-18 | 1997-10-01 | Hitachi, Ltd. | Centrifugal Fluid Assembly |
EP0870928A1 (en) * | 1997-04-10 | 1998-10-14 | Whirlpool Corporation | Circulating centrifugal pump for a diswasher |
JP2010042040A (en) * | 2008-08-08 | 2010-02-25 | Toshiba Corp | Electric blower and vacuum cleaner |
-
1979
- 1979-02-07 JP JP1370479A patent/JPS55107099A/en active Pending
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0795688A3 (en) * | 1993-10-18 | 1997-10-01 | Hitachi, Ltd. | Centrifugal Fluid Assembly |
US5857834A (en) * | 1993-10-18 | 1999-01-12 | Hitachi, Ltd. | Centrifugal fluid machine |
US5971705A (en) * | 1993-10-18 | 1999-10-26 | Hitachi, Ltd. | Centrifugal fluid machine |
EP0984167A3 (en) * | 1993-10-18 | 2000-09-27 | Hitachi, Ltd. | Centrifugal fluid assembly |
US6139266A (en) * | 1993-10-18 | 2000-10-31 | Hitachi, Ltd. | Centrifugal fluid machine |
US6290460B1 (en) | 1993-10-18 | 2001-09-18 | Hitachi, Ltd. | Centrifugal fluid machine |
US6312222B1 (en) | 1993-10-18 | 2001-11-06 | Hitachi, Ltd. | Centrifugal fluid machine |
US6364607B2 (en) | 1993-10-18 | 2002-04-02 | Hitachi, Ltd. | Centrifugal fluid machine |
US6371724B2 (en) | 1993-10-18 | 2002-04-16 | Hitachi, Ltd. | Centrifugal fluid machine |
EP0870928A1 (en) * | 1997-04-10 | 1998-10-14 | Whirlpool Corporation | Circulating centrifugal pump for a diswasher |
JP2010042040A (en) * | 2008-08-08 | 2010-02-25 | Toshiba Corp | Electric blower and vacuum cleaner |
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