JPS5718497A - Eddy flow fan - Google Patents
Eddy flow fanInfo
- Publication number
- JPS5718497A JPS5718497A JP9201680A JP9201680A JPS5718497A JP S5718497 A JPS5718497 A JP S5718497A JP 9201680 A JP9201680 A JP 9201680A JP 9201680 A JP9201680 A JP 9201680A JP S5718497 A JPS5718497 A JP S5718497A
- Authority
- JP
- Japan
- Prior art keywords
- discharge port
- suction port
- passage
- flow fan
- case
- 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 provide the same wind feeding performance in both 50Hz and 60Hz areas, by adjusting an opening degree of a communication passage communicating a suction port with a discharge port.
CONSTITUTION: A communication passage 20 is formed on the partition part 19 located between a suction port 14 and a discharge port 15. This passage 20 allows a leak of partial flow from high pressure at the discharge port 15 to the suction port 14. In case of operating a 50Hz designed fan with 60Hz, it can not be fit for use due to extremely high air output and overload of the motor. In such a case, when a closing member 21 is moved so that the passage 20 may be opened, the performance suitable for 60Hz can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9201680A JPS5718497A (en) | 1980-07-04 | 1980-07-04 | Eddy flow fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9201680A JPS5718497A (en) | 1980-07-04 | 1980-07-04 | Eddy flow fan |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5718497A true JPS5718497A (en) | 1982-01-30 |
Family
ID=14042722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9201680A Pending JPS5718497A (en) | 1980-07-04 | 1980-07-04 | Eddy flow fan |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5718497A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6250701U (en) * | 1985-07-01 | 1987-03-30 | ||
JPH0414795U (en) * | 1990-05-28 | 1992-02-06 | ||
JPH04183994A (en) * | 1990-11-19 | 1992-06-30 | Hitachi Electron Eng Co Ltd | Noise prevention method for vacuum pump |
US5143511A (en) * | 1990-09-28 | 1992-09-01 | Lamson Corporation | Regenerative centrifugal compressor |
US5192184A (en) * | 1990-06-22 | 1993-03-09 | Mitsuba Electric Manufacturing Co., Ltd. | Fuel feed pump |
WO1993007390A1 (en) * | 1991-10-10 | 1993-04-15 | Dowty Defence And Air Systems Limited | Pumps |
-
1980
- 1980-07-04 JP JP9201680A patent/JPS5718497A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6250701U (en) * | 1985-07-01 | 1987-03-30 | ||
JPH0414795U (en) * | 1990-05-28 | 1992-02-06 | ||
US5192184A (en) * | 1990-06-22 | 1993-03-09 | Mitsuba Electric Manufacturing Co., Ltd. | Fuel feed pump |
US5143511A (en) * | 1990-09-28 | 1992-09-01 | Lamson Corporation | Regenerative centrifugal compressor |
JPH04183994A (en) * | 1990-11-19 | 1992-06-30 | Hitachi Electron Eng Co Ltd | Noise prevention method for vacuum pump |
WO1993007390A1 (en) * | 1991-10-10 | 1993-04-15 | Dowty Defence And Air Systems Limited | Pumps |
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