Pressurized water closet flushing system

Abstract

A pressurized water closet operating system comprises a water vessel, an external manifold mounted directly on said vessel, and an internally mounted flush valve assembly. The manifold comprises a water pressure regulator, an air induction system, and a manually operable flush valve actuator. The manually operable flush valve actuator controls the discharge of water under pressure from the water vessel into the toilet bowl.

Description

BACKGROUND OF THE INVENTION1. Field of the InventionThe present invention relates to an improved pressurized water closet that minimizes water usage incident to flushing yet maximizes waste extraction propulsion energy and reliability of the system.2. Related ArtThe herein disclosed pressurized water closet is an improvement over the systems disclosed in U.S. Pat. No. 4,233,698 issued Nov. 18, 1980 and U.S. Pat. No. 5,361,426 issued Nov. 8, 1994, as well as over the system disclosed in application Ser. No. 08 / 457,162 filed Jun. 1, 1995.The basic components of a pressurized water closet are a water vessel, a flush valve and a flush valve actuator. The aforesaid components are generally installed internally of a conventional water closet. The pressurized water closet is energized by water pressure from a conventional fresh water supply system.In operation, as the water level rises in the water vessel after flush, air internally of the water vessel is compressed. When water pressure in...

AI Technical Summary

Benefits of technology

The pressurized water closet flushing system of the present invention solves the aforesaid problems. Specifically, the system exhibits a substantial improvement in waste extraction energy and in the consistency and reliability of the flushing action. The system uses a minimum volume of water upon discharge; provides internal pressure relief upon the occurrence of water system pressure above design pressure; has a flush action that is not a function of time of actuator depression; exhibits positive closure upon the occurrence of low supply line pressure; has a self cleaning actuator valve; and toilet bowl refill volume can be customized to meet application specifications. Moreover, the system exhibits minimal differences in water consumption at high and low water pressures; utilizes two internal back checks, a built in drain, an internal discharge port, and provides for the addition of disinfectant to the toilet bowl without compromise of flushing system integrity.

The aforesaid features of the pressurized flush system of the present invention result in stronger and more effective extraction and drain line carry, cleaner bowls, fewer drain line clogs, no hidden leakage of water between flushes, and smaller sized pipe systems. The system of invention produces a flushing action which clears and cleans a toilet bowl while consuming less than one and six tenths gallons of water while meeting the highest municipal codes. The toilet bowl is emptied by one flush without drain line "drop-off" common to many low water volume, or gravity-flow type toilets.

Upward or opening movement of the flush valve permits water to be ejected into the toilet bowl from the water vessel under relatively high pressure effecting extraction of the contents of the toilet bowl. Flush commences simultaneously with manual depression of the flush valve actuator and is time controlled so as to produce a prolonged high energy surge of water which carries bowl waste into the sewer.

In accordance with one feature of the present invention, both the water vessel and the upper chamber of the flush valve cylinder are connected at all times, through the water pressure regulator, to the pressurized fresh water supply. Another feature of the present invention is that a minimum of 75% of the water stored in the water vessel is discharged at a flow velocity in excess of 20 gpm when supply line pressure is equal to or greater than supply line pressure. This feature results in superior bowl extraction and drain line carry of waste.

Problems solved by technology

Specifically, propulsion energy that effects waste extraction from the toilet bowl is relatively inefficient; high or low pressure in the fresh water system may result in inconsistent operation; the volume of water discharged is inconsistent; there is no provision for internal release of water system pressure above design pressure; flush action is not independent of duration of flush valve actuator depression; closure of the flush valve upon the occurrence of low supply line pressure is not positive; the actuator valve is not self cleaning; there is no provision for varying toilet bowl refill volume, and there is no provision for the addition of disinfectant to the toilet bowl without compromise of flushing system integrity.

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