JPS55146298A - Electric blower - Google Patents
Electric blowerInfo
- Publication number
- JPS55146298A JPS55146298A JP5310079A JP5310079A JPS55146298A JP S55146298 A JPS55146298 A JP S55146298A JP 5310079 A JP5310079 A JP 5310079A JP 5310079 A JP5310079 A JP 5310079A JP S55146298 A JPS55146298 A JP S55146298A
- Authority
- JP
- Japan
- Prior art keywords
- wall
- volute
- air
- exfoliation
- gap
- 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 reduce abnormal noises caused by high frequency by a method wherein a gap is formed by making a hole in the volute wall of an air guide from the side of a motor of the air guide and thereby the exfoliation of air inside and around the volute wall after it runs against a volute tongue is reduced.
CONSTITUTION: The air pushed out to the outer periphery of an impeller 10 by the rotation of the impeller turns to be compressional waves divided in accordance with the number of sheets of blades 10a and runs against a volute tongue 8a, and after that, not flowing along a volute wall 8, exfoliates near the outside of the wall when its flow rate is high, while exfoliating near the inside thereof when its flow rare is low, thus generating strange noises of high frequency. However, by providing a gap 16 in a part of the volute wall 8, air is supplied from the inside of the wall 8 through the gap 16 at the time of high flow rate, thereby the exfoliation near the outside of the wall being reduced, while at the time of low flow rate the exfoliation near the inside of the wall being reduced, thus the occurence of the abnormal noises of high frequency being prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5310079A JPS55146298A (en) | 1979-04-27 | 1979-04-27 | Electric blower |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5310079A JPS55146298A (en) | 1979-04-27 | 1979-04-27 | Electric blower |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55146298A true JPS55146298A (en) | 1980-11-14 |
Family
ID=12933361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5310079A Pending JPS55146298A (en) | 1979-04-27 | 1979-04-27 | Electric blower |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55146298A (en) |
-
1979
- 1979-04-27 JP JP5310079A patent/JPS55146298A/en active Pending
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