| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an air blower capable of reducing noise generated in response to rising of an exhaust pressure loss in a body case. <P>SOLUTION: The air blower 1 has intake means 6, 20 sucking in air by rotating multiblade fans 9, 25, and fan cases 11, 27 forming conduits 12, 28 for guiding the air sucked following rotation of the multiblade fans 9, 25 in fan outlet 11c, 27c directions. In the air blower 1, first stream lining means 15a, 35a for carrying out stream lining of negative pressure air are formed in fan outlet 11c, 27c neighborhoods of the conduits 12, 28, and second stream lining means 15b, 35b for separating a positive pressure portion and a negative pressure portion of the air introduced by the multiblade fans 9, 25 are formed in upstream sides of the conduits 12, 28 with respect to the first stream lining means 15a, 35a. <P>COPYRIGHT: (C)2008,JPO&INPIT |
