| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flat fan capable of exhausting air taken in from the direction of axial line in the radial direction, rotating at high speed, and being constituted by a simple shape. <P>SOLUTION: This fan is constituted in such a way that a driving means 4 for generating rotation force in an impeller 6 is stored inside a boss part 61 of the impeller 6, a vane part 62 is radially provided at an interval from an outer peripheral face of the boss part 61, and a connection part 63 whose maximum length in the direction of axial line is smaller than the minimum length in the direction of axial line on an inside diameter side of the vane part 62 and whose wall thickness in the direction of rotation is larger than wall thickness in the direction of rotation of the vane part 62 is provided between the outer peripheral face of the boss part 61 and each vane part 62. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
