BELÜFTUNGSVORRICHTUNG

摘要

PCT No. PCT/NO92/00205 Sec. 371 Date Sep. 30, 1993 Sec. 102(e) Date Sep. 30, 1993 PCT Filed Dec. 23, 1992 PCT Pub. No. WO93/13364 PCT Pub. Date Jul. 8, 1993.Ventilation device with a heat exchange element, preferably for arrangement in an outer wall (13) of premises which are to be ventilated with balanced volumes of ambient air (15). The ventilation device comprises a pair of air flow passages (23A,23B) each including two separate ventilation tubes (16,19) aligned in the direction of air flow, with generally identical heat exchange elements (18,22) at the ends thereof. A fan (24A,24B) is located centrally between the two heat exchange elements in each passage.