Patent ID: 6526598
Filing Date: 2003-03-04
Classification: E03D,F03D,F03G,Y02E

Abstract:
A ventilation system for removing odors from a water closet or toilet, the toilet having a water supply tank, a bowl with a hollow flush ring manifold adjacent the top of the bowl having an inlet opening and a plurality of flushing water discharge openings facing inwardly into the bowl, a flushing conduit communicating between the bowl and the tank, a discharge conduit communicating with the bowl and a siphon outlet adapted for connection to a sewage waste drain, the discharge conduit including an odor trap to keep odors from passing from the sewage waste drain and the bowl, a water control mechanism adapted to control a supply of water under pressure from an external water supply pipe and a level of flushing water within the tank, a flushing mechanism with a valve controlled outlet to the flushing conduit and the flush ring manifold adapted to discharge the contents of the tank to the bowl, a seat pivotally mounted on the bowl for movement between a horizontal position over the bowl and an elevated substantially vertical position at the rear of said bowl and adjacent the tank, the ventilation system being adapted to exhaust gases from within the bowl to the siphon outlet and into the sewage waste drain, comprising:an exhaust conduit communicating between the bowl and the siphon outlet; a blower assembly operatively connected to and powered by the supply of water from the external water supply pipe when said water control mechanism is allowing the flow of water under pressure from the external water supply pipe to refill the level of flushing water within the tank, said blower assembly being interposed along said exhaust conduit to induce a flow of air within said exhaust conduit toward the siphon outlet and into the sewage waste drain; a fluid motor which is operatively connected to a centrifugal blower of the blower assembly, wherein said fluid motor is connected to the external water supply pipe to utilize the water under pressure therein to rotate said centrifugal blower to induce the flow of air within the exhaust conduit; and an energy storage device which extracts and stores kinetic energy taken from the fluid motor when the flushing water is flowing through and when the water control mechanism is allowing the flow of water under pressure from the external water supply pipe to refill the level of flushing water within the tank, said energy storage device uses the stored kinetic energy to power the centrifugal blower when the ventilation system is in use, even when the flushing water is not flowing through the fluid motor.