Hand-operated sucking and blowing appliance in a case has an impeller spiral with a fan wheel for feeding in air and an extractor for pulling air out

摘要

Air is fed to an impeller spiral (3) by an air inlet (4) and extracted from it by an air outlet (5). A joining pipe (7) feeding air can be fitted to the air outlet through a pipe union (6) fixed in a case. A bayonet connector (8), fitted with a guideway in the overlap area between the joining pipe and the pipe union, consists of an axial section (10a) connected to a circumferential section (10c).