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A feeder insert apparatus for a tubular water filtration cartridge utilized in household point of use water filtration systems. The feeder insert allows a chemical to be fed into a incoming water supply at a controlled rate by employing a bypass system that allows a predetermined amount of incoming

A feeder insert apparatus for a tubular water filtration cartridge utilized in household point of use water filtration systems. The feeder insert allows a chemical to be fed into a incoming water supply at a controlled rate by employing a bypass system that allows a predetermined amount of incoming water to flow past the feed chemical without contacting the chemical. The amount of water in the bypass flow can also be manually adjusted through the use of two adjustment mechanisms, an adjustable ring and a rotatable end cap, located on the feeder insert.

대표청구항 ▼

[ I claim:] [1.] In a point of use water purification system including a filter housing comprised of a sump, an inlet/outlet cap detachably mounted to the sump and thereby holding a tubular filtration cartridge within the filter housing, the tubular filtration cartridge defining a central, axial cha

[ I claim:] [1.] In a point of use water purification system including a filter housing comprised of a sump, an inlet/outlet cap detachably mounted to the sump and thereby holding a tubular filtration cartridge within the filter housing, the tubular filtration cartridge defining a central, axial chamber, and end seals attached to the upper and lower ends of the filtration cartridge in engagement with the sump and the cap at each end to form a seal therebetween, a feeder insert for use within the central chamber of the cartridge comprised of:a lower upstream containment chamber, having an outside dimension less than that of the central chamber, for containing chemicals for release into the water supply, the lower upstream containment chamber having a pair of end caps, each cap having a number of flow passages therein for directing a flow of water through the upstream containment chamber;a downstream flow bypass chamber mounted to the downstream end of the containment chamber having metering slots therein that allow an amount of unpurified water to flow to the outlet without entering the lower containment chamber; anda mounting means secured to the insert and having a diameter slightly greater than the internal diameter of the central chamber to support the insert and maintain its position in the central chamber relative to the filtration cartridge.