Freeze-free vent

Details Freeze-free vent Freeze-free vent

F - Mech Eng,Light,Heat,Weapons

24

F

F24F 13/06 (2006.01) F24F 7/02 (2006.01) F24F 7/04 (2006.01) F24F 13/14 (2006.01) F24F 7/00 (2006.01)

Patent

CA 2199754

A flap valve vent hood for discharging air to atmosphere from clothes dryers and bathroom vents is provided freeze-free by a secondary valve that is mounted on the principal flap valve and covering an open area that provides a secondary air flow path through the principal flap valve. The principal flap valve and the secondary valve are normally closed and the principal flap valve is biased to its closed position by gravity. A lip along an edge of the open area may be provided to minimize accumulation of moisture where the two valves are in contact with one another. A soffit vent hood of particular construction is provided in which there are two members detachably interconnected one being a downwardly directed hood and the other an insert therefor which carries the valves for respective ones of a pair of outlet discharge openings.

Un capuchon d'évent à clapet pour évacuer dans l'atmosphère l'air des sécheuses et des évents de salle de bain est protégé du gel par un clapet secondaire monté sur le clapet principal et couvrant une ouverture qui offre un trajet secondaire d'écoulement de l'air à travers le clapet principal. Le clapet principal et le clapet secondaire sont normalement fermés et le clapet principal est amené à sa position fermée par gravité. On peut poser une lèvre en bordure de l'ouverture pour réduire l'accumulation d'humidité là où les deux clapets sont en contact l'un avec l'autre. L'invention prévoit un capuchon d'évent de soffite de construction spéciale comprenant deux éléments assemblés de façon détachable, l'un étant un capuchon tourné vers le bas et l'autre un élément rapporté porteur des clapets pour les sorties respectives d'une paire d'ouvertures d'évacuation.

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