Improvement in the case of or in combination with axial-flow fans

摘要

For facilitating cleaning and servicing of a fan, specifically a cased axial fan or a plate mounted fan fitted in ductwork in an extraction system, the fan casing (10) is mounted between flanged end members (22) at an interruption in the ductwork (12) to be partially releasable and thereby capable of withdrawal, as by pivotal movement about a hinge (24), to an accessible position in which it remains attached to and supported by the ductwork.