SPRAY NOZZLE WITH LAMINAR FLOW CHARACTERISTIC
The invention relates to an improved spray nozzle ( 1 ), in particular for a cleaning apparatus in a vehicle, comprising at least one nozzle body ( 2 ) with at least one channel ( 3 ), wherein the channel ( 3 ) extends between an inlet orifice ( 4 ) and an outlet orifice ( 5 ) and is provided for forming a spray jet ( 4 ) from a cleaning fluid, which is ejected from the outlet orifice ( 4 ), wherein the channel ( 3 ) is helically twisted at least in its portion adjoining the outlet orifice ( 5 ).
1 . A spray nozzle comprising:
a nozzle body;
an inlet orifice configured to receive a fluid; and
an outlet orifice configured to eject a spray jet of the fluid,
wherein the nozzle body comprises a channel configured to form the spray jet of the fluid, the channel extending between the inlet orifice and the outlet orifice, and
wherein the channel is helically twisted at a position adjacent to the outlet orifice.
2 . The spray nozzle as claimed in claim 1 , wherein the channel is helically twisted along a channel axis with a defined pitch.
3 . The spray nozzle as claimed in claim 2 , wherein a channel cross section of the channel is elongated with a defined cross-sectional width and a defined cross-sectional height, and
wherein the cross-sectional width is greater than the cross-sectional height.
4 . The spray nozzle as claimed in claim 3 , wherein the ratio of cross-sectional height to cross-sectional width is constant in the region of the helically twisted portion of the channel.
5 . The spray nozzle as claimed in claim 3 , wherein the ratio of cross-sectional height to cross-sectional width is greater at the inlet orifice than at the outlet orifice.
6 . The spray nozzle as claimed in claim 5 , wherein a surface of the channel cross section is larger at the inlet orifice than at the outlet orifice.
7 . The spray nozzle as claimed in claim 6 , wherein the surface of the channel cross section is continuously reduced in the direction of the outlet orifice in the region of the helically twisted portion of the channel.
8 . The spray nozzle as claimed in claim 7 , wherein the channel cross section is rounded without corners with two orthogonal axes of symmetry, substantially as a Cassini curve or a flattened oval or substantially as a Lamé oval.
9 . The spray nozzle as claimed in claim 8 , wherein the nozzle body is arranged in a housing to be adjustable in relation to at least one spatial axis.
10 . The spray nozzle as claimed in claim 9 , wherein the nozzle body is arranged to be adjustable relative to the housing.
11 . (canceled)