Ventilation means

Details Ventilation means Ventilation means

F - Mech Eng,Light,Heat,Weapons

24

F

98/41

F24F 7/00 (2006.01)

Patent

CA 1308597

ABSTRACT VENTILATION MEANS The ventilation means is applicable to dwellings or other buildings and comprises a rectangular-section duct of inner and outer telescopic parts 10, 12 made of rigid PVC. The inner part 10 has two internal inclined flanges 18 at opposite sides on which is supported a rigid rectangular, parallelepiped porous body 20 of mineral wool. The body 20 is clamped at its upper end between the top wall of the duct and the flanges 18. The body 20 allows water vapour to diffuse outwardly from the interior of the building; it also resists air flow through the duct reducing the speed of through air-flow to 20% to 50% of external air speed, depending on the speed. The ducts are fitted in openings through opposite external walls near the ceiling in ground floor rooms e.g. kitchen. Condensation is prevented without an excessive increase in air flow through the building. The telescopic duct can be fitted to walls of different thicknesses.

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