For certain reasons, the use of a vibratory pump in professional household machines makes sense: they are small and durable, and if they do break, they are cheap and easy to replace. Rotary pumps, on the other hand, need a lot of space, which usually leads to larger machines. If you do not use rotary pumps for a long time, they seize up and need to be replaced, which is very expensive.
The disadvantage of vibration pumps is the loud operating noise. But with appropriate measures, this can be very effectively reduced to an unobtrusive hum.
Wir nutzen eine relativ leise Pumpe von Ceme oder Olab und bauen sie auf eine besondere Art ein. Dazu kommt noch, dass wir die Pumpe so über unsere Steuereinheit ansteuern, dass Geräusch und Schwingungen weiter deutlich reduziert werden.
At the end of all these measures, there is now a machine with a vibration pump, which is hardly louder than a well-built rotary pump, much to the delight of all the housemates.