3.2.3. Diaphragm compressors

Fig. 3.7: Symbol for diaphragm compressor
The diaphragm compressor belongs to the family of displacement compressors.

An elastic diaphragm causes the compression. Instead of a piston moving linear between two end positions, the diaphragm is moved in non-linear vibrations. The diaphragm is attached to the side and is moved by a con-rod. The stroke of the con-rod depends on the elasticity of the diaphragm.

Fig. 3.8: Op. diagram of diaphragm compressor
    • Large cylinder diameter.
    • Small stroke.
    • Economical with low output quantities, low pressures and when generating a vacuum.