Air amplifier / Air flow amplifier

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(German text below) Video: https://youtu.be/dz8_Iv__ATw What is an air amplifier? An air amplifier uses compressed air or gas, that swirls in a chamber at high speed and passes through a small gap into a pipe of special shape. That air stream produces a draft on one side of that tube and a jet of air on the exhaust side. Devices like this have no moving parts and can be used to produce sub pressure or move light substances in critical environments. The benefits over venturi pipes are for example less air consumption less wearing ability to transport light things The thing here has an air gap of zero width by default, which is of course useless. To set the gap width you will need a thin gasket of 40mm outher, 35 mm inner diameter and a thickness of about 0.1mm, which can be cut easily form a sheet of printer paper. The gasket has to be placed between the parts. Thicker gaskets produce more draft, but also more compressed air consumption. Experiment! This thing has a 1/4" NPT air inlet. In the video the gap is set to 0.1mm and the air supply has about 0.5 bar. An air amplifier uses compressed air or other compressed gas that creates a fast-flowing vortex in a chamber and is then directed through a narrow gap into a specially shaped tube. This creates a negative pressure at one end of the tube and a strong airflow at the outlet end. Air amplifiers have no moving parts and can be used to create negative pressure or transport light substances, even in critical environments. Advantages of the air amplifier over a venturi tube: Lower air consumption less wear Possibility to transport light media In the present model, the width of the air gap is zero, which of course makes little sense. However, the gap width can be arbitrarily produced by inserting a seal of 40mm outer diameter and 35mm inner diameter, which can be easily cut out of printer paper. One layer of paper results in a gap width of about 0.1mm. Larger gap widths produce more suction, but also consume more compressed air. The model has a 1/4 threaded connection for the compressed air. In the video, the gap width is set to 0.1mm and the air supply has a pressure of approx. 0.5 bar.