| 摘要 |
A method for incorporating concurrrent delivery of a bactericidal agent into water intended for supply to a dental unit. A reservoir adapted to contain a liquid bactericidal agent is connected to a variable rate pump having an inlet line extending from the reservoir to the inlet of the pump. An outlet line extends from the pump outlet and provides a bactericide supply line. A water supply line 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 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 is responsive to fluid flow in the water supply line and generates an output parameter representative of this flow rate. A flow control system responds to this measured parameter to vary the pumping rate of the pump. An enlarged mixing chamber 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 is interposed between the water supply line between the inlet thereof and the mixing junction. Check valves 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.
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