| 摘要 |
<p>A disc (8) closes the axial outlet (3), and in the centre of it is a funnel-shaped outlet aperture (10), the funnel (11) of which widens to the chamber (12). The funnel has a rectangular cross-section, the width of which is at least twice as large as its height. The cross-section of the outlet aperture (10) in its direct outlet area has preferred dimensions of width x height ie.1.6 mm x 0.7 mm. The wide funnel surfaces in relation to the longitudinal axis (L) of the jet nozzle (1) running through the outlet aperture are inclined at an angle alpha and the narrow funnel surfaces in relation to the longitudinal axis (11) at an angle beta. Alpha can vary between 10[deg] and 45[deg], but is preferably 15[deg] and beta can vary between 20[deg] and 80[deg], but preferably is 80[deg].</p> |
