Podolyak, V.V.PodolyakSchmucker, U.U.Schmucker2022-03-082022-03-081998https://publica.fraunhofer.de/handle/publica/304128The device has an ultrasonic wave generator and flat introduction elements, to introduce ultrasonic energy into the fluid medium in an appliance. The generator and a wave transmitter (2) are positioned outside the fluid medium. A separate ultrasonic flat projector (1) of tubular circular construction is connected to the generator. A full-length gap in the projector is in direct contact with the fluid medium with its inside and outside (6,7). The generator is formed, so that ultrasonic energy/waves are transmitted intermittently in the form of impulses, into the fluid medium. USE - Esp. for appliances containing water e.g. heat- exchangers, pipe lines, boilers etc. ADVANTAGE - Simple and cheap, suitable for mass production, maximises generated energy.de608670patent1997-19714665