WATER SANITIZING SYSTEM AND PROCESS

摘要

This invention is a method for incorporating concurrent delivery of a bactericidal agent into water intended for supply to a dental unit. A reservoir (23) adapted to contain a liquid bactericidal agent is connected to a variable rate pump (22) having an inlet line (24) extending from the reservoir to the inlet of the pump. An outlet line (26) extends from the pump outlet and provides a bactericide supply line. A water supply line (10) is adapted to be connected to a source of water under pressure which provides a flow path through the system to a suitable outlet adapted to be connected to a dental unit. A mixing junction (20) interconnects the water supply line and the bactericide supply line so that bactericide can be mixed into the water supply line. A flow sensing unit (28) is responsive to fluid flow in the water supply line, and generates an output parameter representative of this flow rate. A flow control system (29) responds to this measured parameter to vary the pumping rate of the pump. An elarged mixing chamber (34) is located between a mixing junction and the water supply line outlet with the sensing unit interposed between the mixing chamber and the mixing junction. A water filter (12) is interposed between the water supply line between the inlet thereof and the mixing junction. Check valves (18, 30) are located in the water supply line upstream/downstream of the mixing junction. The mixing chamber is interposed between the second check valve and the outlet of the supply line.