| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric motor capable of realizing a blower which achieves a highly accurate airflow-static pressure property having extremely reduced variation in airflow even in a change in static pressure such as pressure loss, and can increase a blowing volume at high humidity depending on a change in humidity. <P>SOLUTION: A polyamide 6 resin having many amide groups in the same molecular length allows water molecules subjected to hydrogen bonds with the amide groups to further attract neighboring water molecules in a region at high humidity to form hydrogen bonding between the water molecules to swell. A magnetic pole part 3a of a magnet rotor 3 formed of the polyamide 6 resin then increases its outer diameter to reduce its air gap 18, allowing an induced voltage induced in a driving coil 2 to be increased. When a current supplied to the driving coil 2 is the same, an electric motor can have a higher shaft torque due to the increased induced voltage. Accordingly, the electric motor provides an airflow-static pressure property in which a ventilation air volume is increased at high humidity compared to that at normal humidity. <P>COPYRIGHT: (C)2013,JPO&INPIT |
