Arrangement for the cooling of a switchgear cabinet with arranged in the interior, heat-generating components

摘要

Arrangement for the cooling of a switchgear cabinet with in the interior of the switchgear cabinet are arranged above one another, heat-generating components, the by a stream of cooling air (25) of a central cooling system (24) are cooled by means of a hollow space lying under the control cabinet (30) of a false floor (20,21) into the interior space (11) of the switchgear cabinet (10) is passed, the inserts (14) in the interior (11) is cooled down by means of fans (18) from the switchgear cabinet - interior space (1 1) is filtered off with suction into the surrounding space of the switchgear cabinet (10) and / or flows out again to the central refrigeration system (24) for precooling of the cooling air stream (26) over the bottom (28) of the switchgear cabinet (10) into the interior space (11) of the same, characterized by the,that the of the double floor (20,21) in the switchgear cabinet - interior space (1 1), which is fed back into a cooling air stream (26) between the cabinet door (21) and the fittings (14) is formed in the air shaft (27) is introduced and which, at least along the in the switchgear cabinet - interior space (11) of the components (14) occupied height and width,in that the cooling air flow (26) in partial streams (15) over the baffles (14) and passed through the rear side (13) of the switchgear cabinet (10) is removed, whereby these by means of a heat exchanger - rear wall (16) or a rear wall - heat exchanger - cabinet is closed, the (of the) extends over the in the switchgear cabinet - interior space (11) of the components (14) occupied height and width, and that the the rear side (13) by means of air leaving the fans (18) via the heat exchanger - rear wall (16) or the rear wall - heat exchanger - cabinet is filtered off with suction and either as a recirculated air (19) the hollow space (30) of the double floor (20, 21) or the ambient air (29) of the switchgear cabinet (10) can be supplied to.