Patent ID: 6257317
Filing Date: 2001-07-10
Classification: F24F,F28D,Y02B

Abstract:
A heat recovery ventilator for use in ventilating a room, comprising means for venting a stale airstream of an indoor climate to the outside air, means for supplying a fresh airstream from the outside air of an outside climate, at least two stationary regenerative heat exchangers and a rotating air switch for transferring the stale airstream to the regenerative heat exchangers from the means for venting the stale airstream of the indoor climate and for transferring the fresh airstream from the regenerative heat exchangers to the means for supplying the fresh airstream from the outside air of the outside climate, said rotating air switch being rotatably mounted and including:(a) a first circular side plate having an air flow opening therein,(b) a second circular side plate having a pair of air flow openings, said second plate spaced apart and disposed opposed and parallel to said first plate, and(c) a single manifold extending from said air flow opening in said first side plate to one of said pair of said air flow openings in said second side plate, said manifold enclosing said air flow opening in said first side plate and said one of said air flow openings in said second side plate and forming a fresh air passage way for transferring the fresh airstream from the regenerative heat exchangers to the means for supplying the fresh airstream from the outside air of the outside climate, said other opening in said second side plate forming a stale air passageway for transferring the stale airstream from the means for venting the stale airstream of the indoor climate to the regenerative heat exchangers; and wherein air flows in opposite directions through the same regenerative heat exchanger.