Ventilator unit

F - Mech Eng,Light,Heat,Weapons – 28 – D

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98/28

F28D 17/00 (2006.01) F24F 12/00 (2006.01)

Patent

CA 1247450

Abstract A ventilator unit intended for installation in the outside wall of a room such that used air from the room is vented to the outside atmosphere through the outside wall while fresh air is introduced from the outside and supplied to the unit where it is suitably air conditioned, i.e., heated (cooled), filtered, optionally humidified, etc. before being blown into the room, the unit comprising an exhaust fan for maintaining an outflow of air from the room and an inlet fan for causing an inflow of fresh air into the room, and also including for purposes of heat recovery a heat exchanger for transferring heat from the outflowing air to the inflowing fresh air, wherein the two streams of air, alternate periodically through two equal regenerator masses. The heat exchanger, which comprises two separate heat exchanger assemblies, is connected to a vane arrangement having adjustable vanes for con- trolling both the outflowing and incoming air streams, said vanes being mounted on a common rotatable shaft which is adapted to rotate periodically with a specified angle of rotation, such that in one position the exhaust air is guided through a first of the said heat exchanger assemblies while the incoming air stream is simultaneously guided through the second heat exchanger assembly, and in a second position the respective air streams are guided through the respective opposite heat exchanger assemblies, for the purpose of ensuring efficient heat recovery/heat transfer.

485481

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