Patent ID: 7048206

Claim:
Swirl pressure nozzle with a nozzle body ( 10 ), in which an inner area ( 100 ) is provided which has a tapered section ( 102 ) with a largest diameter (D s ) and a smallest diameter (D o ), the nozzle having an inlet ( 104 ) joining in an essentially tangential manner in the tapered section ( 102 ) of the inner area ( 100 ), the inlet being provided in the end region of the tapered section ( 102 ) of the inner area ( 100 ) which has the largest diameter (D s ), so that in operation a fluid medium is able to be supplied under pressure through this inlet ( 104 ) in an essentially tangential manner into the end region with the largest diameter (D s ) in the tapered section ( 102 ) of the inner area ( 100 ), in which the tapered section ( 102 ) of the inner area ( 100 ) has an axial length (L s ) and at its end with the smallest diameter (D o ) leads into an outlet ( 103 ) of the nozzle, which has the same diameter (D o ) as well as a length (L o ) characterised in that the inlet has a diameter (D p ) and that the different parameters are in a ratio to each other, that lies in the following ranges: diameter of the inlet to the diameter of the outlet (D p /D o ) in the range from 0.42 to 1.56; largest diameter of the tapered section ( 102 ) to the smallest diameter of the tapered section (D s /D o ) in the range from 3 to 8; length of the tapered section ( 102 ) to the largest diameter of the tapered section (L s /D s ) such that the angle of the opening (α) of the tapered section ( 102 ) is greater than 60°, length of the outlet ( 103 ) to the diameter of the outlet (L o /D o ) in the range from 0.2 to 1.5.