Patent ID: 8702017

Claim:
A nozzle device comprising: a nozzle chamber; a fluid inlet located at a first side of the nozzle chamber which is configured to introduce fluid into the nozzle chamber in an injection direction; a fluid outlet at a second side of the nozzle chamber which is configured to expel fluid from the nozzle chamber; a high frequency wave generator located in the nozzle chamber which is configured to generate high frequency waves in a direction which is substantially parallel to the injection direction, whereby to impart high frequency energy to the fluid in the nozzle chamber, wherein the nozzle chamber further comprises a diffuser having a compartment to receive fluid injected by the fluid inlet, and which is configured to spread the fluid from the compartment into the nozzle chamber, and wherein the diffuser further comprises a peripheral wall surrounding the fluid inlet, apertures being formed in the peripheral wall which are configured to spread the fluid into the nozzle chamber in directions which are substantially perpendicular to the injection direction.