| 摘要 |
An air blowing machine includes a casing composed of a peripheral wall and at least one sidewall through which an inlet is defined. A hollow interior is defined in the casing and an opening is defined in a top of the casing. The casing has an inner surface which includes a first curvature with a first radius "A 1" , a second curvature with a second radius "B 1" , a third curvature with a third radius "C 1" , a fourth curvature with a fourth radius "D 1" and a fifth curvature with a fifth radius "E 1" in counter clockwise direction from the opening. A relationship among the radiuses is A 1 <B 1 >C 1 <D 1 <E 1.
|
