초록 ▼

A nozzle for spraying a fluid comprises an outlet duct (3, 4) opening out into a swirling chamber (5) in the center of an annular surface (10), the chamber being closed by an end wall (6) which is pierced by an outlet orifice (7) and which includes an inside face (6a) provided with swirling grooves

A nozzle for spraying a fluid comprises an outlet duct (3, 4) opening out into a swirling chamber (5) in the center of an annular surface (10), the chamber being closed by an end wall (6) which is pierced by an outlet orifice (7) and which includes an inside face (6a) provided with swirling grooves (80. The swirling chamber (50 is partially filled by a core (9), the core leaving at least one lateral passage (11) empty, putting the swirling groove into communication with the outlet duct. The spray nozzle also includes a valve adapted to close the outlet duct. The core is a substantially circularly cylindrical elastomer part which is resiliently compressed axially against the end wall (6) of the swirling chamber and the annular surface (10), the core (9) cooperating with the annular surface to constitute the valve, and the core being pressed against the nd wall, thereby isolating the swirling grooves (8) so that they do not communicate with one another between the outlet orifice (7) and the lateral passage (11) left empty by the core (9).

대표청구항 ▼

[ We claim:] [1.] A nozzle for spraying a fluid, the nozzle comprising an outlet duct (3, 4) for receiving said fluid and opening out into a distribution chamber (5) in the center of an annular surface (10), said distribution chamber being closed by an end wall (6) pierced by an outlet orifice (7) a

[ We claim:] [1.] A nozzle for spraying a fluid, the nozzle comprising an outlet duct (3, 4) for receiving said fluid and opening out into a distribution chamber (5) in the center of an annular surface (10), said distribution chamber being closed by an end wall (6) pierced by an outlet orifice (7) and which includes an inside face (6a) provided with grooves (8) in communication with the outlet orifice, said distribution chamber being partially filled by a core (9) which extends axially between a front face (9a) close to the end wall and a rear face (9b) remote from the end wall, the core leaving empty at least one lateral passage (11) putting the grooves into communication with the outlet duct, the spray nozzle also comprising a valve adapted to close the outlet duct except during periods when said fluid is being sprayed, and to open under the effect of fluid arriving in the outlet duct, the core co-operating with the annular surface to constitute said valve, and said rear face (9b) of the core bearing with sealed contact against said annular surface (10), wherein the core is a substantially circularly cylindrical elastomer member which is resiliently and axially compressed between the end wall of the distribution chamber and said annular surface.