Air amplified mini-vacuum

摘要

An air pressure powered vacuum has a housing with a continuous channel through it. Positive pressure air is introduced into and accelerates in an annular shaped plenum in the housing. The high velocity air is diffused from the plenum into the channel towards a debris collection bag. The diffuser is shaped so that the air diffuses at an angle with respect to the surface of the channel and such that laminar air flow occurs adjacent said channel wall downstream. This creates strong suction at the channel inlet and debris is carried to the collection bag.