Pressure-assisted toilet flush cartridge

Abstract

A pressure assisted toilet flush cartridge that reduces noise output by controlling water flow. One aspect of the noise reduction is to reduce the initial discharge increase in flow rate. Another aspect is to create a vortex in discharge water to reduce cavitation and quiet the discharged water flow through the bowl.

Description

TECHNICAL FIELD [0001] The present invention relates to a pressure assisted toilets, and more specifically to a flush cartridge for a pressure assisted toilet. BACKGROUND OF THE INVENTION [0002] A pressure assisted toilet system typically includes a vessel, a supply system and a flush cartridge. The supply system typically includes a backflow prevention and a pressure regulator to ensure that the vessel is maintained below a desired pressure. Since the vessel is fully sealed, it retains the supply pressure after each flush cycle refill. This supply pressure, typically 45-55 psi, pressurizes the pressure tank to its prescribed level and provides a motive force for a subsequent flush of a toilet bowl. Prior art pressure assisted toilet systems are found in U.S. Pat. Nos. 4,223,698, 5,361,426, and RE37,921 the disclosures of which are hereby incorporated by reference in their entireties. [0003]FIG. 1 illustrates a prior art pressure assisted toilet system 20. System 20 is typically enc...

AI Technical Summary

Benefits of technology

[0005] The present invention relates to reducing the noise output of a pressure assisted toilet. The inventor has found that reducing the rate of initial water flow during a flush and swirling the water discharge from the pressure tank to the bowl individually reduce undesirable noise, and that a combination of these two reduce noise even further when compared to units such as, for example, the U.S. Pat. No. 4,223,698 Patent.

[0008] A further embodiment includes method of reducing noise in a pressure assisted toilet that includes imparting a swirling effect in a fluid discharged from the pressure tank to create a vortex.

Problems solved by technology

A disadvantage of the prior art pressure assisted toilet system is that the noise generated during flushing has restricted its use in residential applications where excessive noise is undesirable.

This noise is partially due to the rapid change in water flow rate, cavitation, and flow direction.

Additionally, multiple parts are required to flush prior art toilets, thus adding to the expense of these systems.

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