Patent ID: 6684939
Filing Date: 2004-02-03
Classification: F24F,F28D,F28F,Y02B

Abstract:
An air-ventilator including a main housing, said main housing comprising first and second air-compartments respectively along which first and second air streams can flow, said air-ventilator including:first and second air-moving devices including centrifugal fans driven by a single motor, for moving said first and second air streams respectively along said first and second air-compartments, a thermal exchanger providing thermal exchange between said first and second air streams without mixing of said air streams, an air-filter disposed at the air-intake or upstream end of one of said air-compartments, and an additional air-moving device disposed in series with said first air-moving device and including a centrifugal fan having a fan shaft generally orthogonal to that of said first and second air-moving devices, wherein said first, said second and said additional air-moving devices are located intermediate said thermal exchanger and said air-filter, said additional air-moving device providing additional air-moving power to move air from said air-filter towards said thermal exchanger.