OsciJet Nozzles are based on the principle of fluidic oscillators. These devices create a self-induced oscillation without requiring any moving parts.
The mechanism is as elegant as it is simple. If the inlet is pressurized with a liquid or gas, the jet adheres to either one of the internal side walls as seen in the animation. From there the jet impinges onto the wall close to the exit where it splits into two parts. While the main part of the jet exits the device, a small portion of the fluid is diverted through the feedback channel back to the inlet where it pushes the main jet to the opposite side. The process is repeated on the other side which leads to a periodic oscillation – without any moving parts.
Of course, the details of the design for these devices are important. Small changes in the geometry can already yield completely different effects. Our technology platform is able to adjust the devices to meet customer requirements such as frequency, pressure drop, and jet pattern. The oscillators are scalable to any size and work at frequencies ranging from a few Hz up to several kHz. Furthermore, devices are available which do not create a sweeping motion but pulsate in the main jet direction.