Full cone spray nozzle

摘要

A full cone spray nozzle comprising: a nozzle body (1) having a liquid inlet (3) at its upstream end and a spray orifice (4) at its downstream end; a vane structure (2) of an axial direction length (W) and diameter (D) arranged with its outer circumferential surface in contact with the inside of the nozzle body (1); has a plurality of channel grooves (6) of width (T) and depth (H) at the outer circumferential surface of the vane structure (2); an upstream side projecting part (8) of a length (U) in the axial direction of the nozzle body (1) at an upstream side of the vane structure (2); a downstream side projecting part (9) of a length (P) in the axial direction of the nozzle body (1) at a downstream side of the vane structure (2); and a swirl flow chamber (5) of an axial direction length (L) which is a space formed by an inside wall surface of the nozzle body (1), the vane structure (2) and the spray orifice (4), wherein 0.25≦T/D≦0.30, 0.25≦H/D≦0.30, and 1.5≦L/W≦3.5 are satisfied.

主权项

1. A full cone spray nozzle comprising:
a nozzle body having a fluid inlet at an upstream end and a spray orifice at a downstream end and an inner surface; a vane structure of an axial direction length W and diameter D arranged at an intermediate position inside of the nozzle body so that an outer circumferential surface contacts the inner surface of the nozzle body, the vane structure dividing the nozzle body into an upstream side and a downstream side; a plurality of channel grooves of a width T and a depth H in an outer circumferential surface of said vane structure; a downstream side projecting part connected to a downstream side of said vane structure, the downstream side projecting part being spaced from the inner surface of the nozzle body; and a swirl flow chamber of an axial direction length L which is a space formed by the inner surface of said nozzle body, said vane structure, and said spray orifice, wherein 0.25≦T/D≦0.30, 0.25≦H/D≦0.30, and 1.5≦L/W≦3.5 are satisfied.