| 摘要 |
FIELD: heating systems, ventilation systems. ^ SUBSTANCE: air passage device (200) to be built into the erection opening in the housing wall, which is meant for structural waste heat generating assemblies, for example distribution cabinets, consists of the main body (21) with a holder (25) for an airblower and a decorative cover (80) with a ventilation grid (10) having plate elements (90); besides, at least one plate element (90) made in such a way that it can turn, or at least one spring tongue-shaped side wall area separated by means of slots provided across longitudinal direction of side wall from the rest decorative cover (80) side wall surface is ensured in the area directed from the turning axis to turn the decorative cover of upper side wall of decorative cover. At that plate element and tongue-shaped side wall area are made in the form of a detachable and fixing connection with a lock between decorative cover and the main body, which is brought into operation with a pin. ^ EFFECT: expediting and simplifying the replacement of filtering mats. ^ 21 cl, 28 dwg |
