Patent ID: 9374914
Filing Date: 2016-06-21
CPC Classification: B01D,F04D,H05K

Claim Text:
1. An air guidance unit for mounting into a cut-out of a switchgear cabinet wall, comprising an air guidance housing and a fan assembly that can be detachably connected thereto, the air guidance housing comprising one or more blocking studs, the fan assembly comprising a housing having two flanges which are equipped with closure receptions and the fan assembly further comprising a fan mounted within said housing for rotation about an axis, and the closure receptions each having a blocking section into which the blocking stud can be swiveled, a plurality of locking pieces, with each of the plurality of locking pieces selectively immobilizing the fan assembly in an operating position of the fan assembly such that relative rotation between the air guidance housing and the fan assembly about the axis of the fan is blocked, wherein the fan assembly comprises two fixing sides, the fixing sides comprising the closure receptions with the blocking section and wherein the fan assembly can be selectively fixed at the air guidance housing by means of the fixing sides in operating positions rotated by 180 degrees, wherein the fan assembly, depending on a desired operation mode, sucking or blowing, is seated with the respective flange at its rear side on a bottom of the air guidance housing, so that the air guidance unit can be selectively converted from sucking to blowing operation and vice versa.