To provide an axial blower which can blow with a small amount of airflow in the case of needing a small amount of airflow in constant ventilation or the like and can lower a decrease in the amount of air blowing even though an external pressure loss, such as outside wind pressure increases in the case of needing a large amount of air blowing, such as quick ventilation.
An electric motor 11 is an axial blower 8 which operates in constant rotation with a rotation frequency of one third of a rotation frequency synchronized with a power supply frequency of an alternating current in the range from an external static pressure zero to maximum static pressure when selecting a small amount of air blowing because a torque range expands, the torque range containing a large amount of tertiary harmonic components and being rotation frequency constant caused in the rotation frequency of one third of a rotation frequency synchronized with a power supply frequency of a commercial AC power source due to a concentratedly wound stator 4, even-number conductor bars 5, and a configuration in which the conductor bars 5 are arranged on positions on an interpole center line connecting the centers of inter-poles 7 facing at the inter-poles 7 of the respective permanent magnets 6. A wind amount and static pressure characteristic can be acquired, which can lower a decrease in the amount of air blowing even regardless of an increase in an external pressure loss, such as external wind pressure.
MUROMACHI KAZUHIRO
| JPH10248219A | 1998-09-14 | |||
| JP2011061933A | 2011-03-24 | |||
| JP2005192397A | 2005-07-14 | |||
| JP2004364434A | 2004-12-24 | |||
| JPH0946985A | 1997-02-14 | |||
| JPH08308289A | 1996-11-22 | |||
| JPH09148165A | 1997-06-06 | |||
| JP2011061933A | 2011-03-24 | |||
| JPH10248219A | 1998-09-14 |
Daisuke Nagano
Kentaro Fujii
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