Patent ID: 8741012

Claim:
An avionic bay comprising at least one aircraft electronic equipment item, and a device for filtration of cooling air intended to cool said at least one electronic equipment item, the device comprising: a channel to convey a cooling air vein intended to be distributed at least in part to an aircraft electrical equipment item, a first grille positioned above the channel in an axial direction so as to filter at least one part of the cooling air vein supplied from the channel, the first grille including first apertures that go right through the grille along the axial direction, a second grille positioned above the first grille in the axial direction so as to filter said at least one part of the cooling air vein supplied from the channel and filtered beforehand by the first grille, the second grille including second apertures that are offset transversely in relation to the apertures of the first grille, a third grille positioned above the second grille in the axial direction so as to filter said at least one part of the cooling air vein supplied from the channel and filtered beforehand by the first grille and the second grille, the third grille including third apertures that are offset transversely in relation to the apertures of the second grille.