Ventilationsanlæg med et indstilleligt spjæld til regulering af en recirkulationsåbning mellem en indsugningskanal og en udsugningskanal.

摘要

A ventilation system comprising ducts for injecting air into and exhausting air from a room, said ducts being separated by a partition incorporating an opening between the ducts in which a heat conducting damper plate, both surfaces of which are provided with coatings of an insulating material, is movably arranged to adjust the ventilation. The insulating coating of the surface facing the injected air flow covers the plate completely absent from a peripheral area of the part of the plate located in the injection duct, whereas the coating on the opposite surface covers the part of the plate located in said injection duct right to the peripheral edge of the plate and leaves the part of the plate located in the exhaust duct uncovered.