Fan

A fan assembly for generating an air flow within a room, the fan assembly comprising an annular casing defining an interior passage with at least one air inlet, the interior passage housing, downstream from said at least one air inlet, an impeller and a motor for driving the impeller to draw an air flow through said at least one air inlet and into the fan assembly, the interior passage also having at least one air outlet from which at least a portion of the air flow is emitted from the fan assembly, the casing defining a bore about which the interior passage extends and through which a secondary air flow from outside the fan assembly is drawn by the air emitted from said at least one air outlet.