| 摘要 |
PROBLEM TO BE SOLVED: To provide a blower device capable of changing a blowing range according to a user's request, while suppressing an energy loss of an airflow.SOLUTION: A blowing device 11 includes: a suction port 14; an annular first blowoff port 15 provided on the substantially same plane surface; a second blowoff port 16 provided on the outer peripheral of the first blowoff port; a high pressure air generating part 19 which leads air from the suction port 14 to the first blowoff port 15 and/or the second blowoff port 16; an induction air sucking part 20 which sucks induction air by being induced with the air blown off from the first blowoff port 15 and/or the second blowoff port 16; an induced air blowoff part 21 which blows off the air; and air distribution means 27 which distributes the air blown off from the first blowoff port 15 and/or the second blowoff port 16 at an optional ratio. A non-Coanda area 29 is equipped between the second blowoff port 16 and the induction air blowoff part 21, thereby achieving a predetermined target.SELECTED DRAWING: Figure 2 |
