| 摘要 |
A nozzle hole mechanism (10) is provided with a nozzle hole (28) which ejects a concentrate into the atmosphere, a swirl chamber (30) which supplies the concentrate to the nozzle hole (28), and a path (27) which supplies the concentrate to the swirl chamber (30). The diameter of the nozzle hole (28) is 0.2 mm or less, the length of the nozzle hole (28) is in the range of 0.05-0.3mm, and the swirl chamber (30) and the nozzle hole (28) are located on the same axis. The swirl chamber (3) is equipped with a front section having a solid cylindrical shape, which communicates with the nozzle hole, and a rear section having an ring shape. The nozzle hole mechanism is configured in such a manner that the concentrate is supplied to the rear section (30a) and discharged from the nozzle hole (28) via the front section (30b). The configuration enables the nozzle mechanism to spray fine particles over a wide area using small spray amount. |
