Development of a no-moving-part blower for difficult operating conditions

The blower discussed in this paper is based on an unusual working principle, characterised by absolute separation of internal cavities from outer environment. In operation, no blower components in contact with the handled gas are moved or deformed. This leads to extremely long life without any maintenance, making the blower suitable for handling either a dangerous gas that must be kept within a permanent containment - or, on the other hand, a gas that must not be contaminated from the outside. Initially, the blower was designed for handling a radioactive gas. Later, it was found useful for closed-loop recirculation of a gas sample to obtain an increased concentration of a detected substance by the stripping technique, increasing detection sensitivity.