초록 ▼

A high flow valve assembly and a low flow valve assembly are in parallel flow relation between an inlet and an outlet of a flush controller housing. The valve assemblies are opened by solenoid operated pilot valves under the control of a microprocessor based flush control system. A turbine directly

A high flow valve assembly and a low flow valve assembly are in parallel flow relation between an inlet and an outlet of a flush controller housing. The valve assemblies are opened by solenoid operated pilot valves under the control of a microprocessor based flush control system. A turbine directly measures flow through the low flow valve assembly and the control system computes flow through the high flow valve assembly to perform a flushing operation including an initial siphon trap flushing high flow portion and a subsequent trap reseal low flow portion. A push button is pressed to one of two override positions either to provide a signal to the control system for a normal flush operation or to open the high flow valve assembly independently of the control system for an emergency flush operation. A user detection system includes a pair of emitters and a pair of detectors defining an array of intersecting detection points in a skewed plane in which the control system can locate the position of a user. The controller can be configured for supplying flush water for either a toilet or a urinal, and for either right or left side water supply entry.

대표청구항 ▼

1. A flush controller for siphon flushing and resealing the trap of a sanitary fixture comprising:a housing having an inlet for connection to a water supply and an outlet for connection to the sanitary fixture; a control system including a microprocessor mounted within said housing; a high flow path

1. A flush controller for siphon flushing and resealing the trap of a sanitary fixture comprising:a housing having an inlet for connection to a water supply and an outlet for connection to the sanitary fixture; a control system including a microprocessor mounted within said housing; a high flow path between said inlet and said outlet, and a high flow valve in said high flow path; a first electrical valve operator for opening and closing said high flow valve; a low flow path between said inlet and said outlet, and a low flow valve in said low flow path; a second electrical valve operator for opening and closing said low flow valve; said low and high flow paths having flow restrictions with a proportional relationship; a flow sensor in said low flow path for measuring flow in said low flow path and providing an output signal; means for providing an initiation signal to said control system; said control system including means for operating said first and second valve operators for opening said high flow and low flow valves in response to said initiation signal in order to provide a siphon flush flow through said output port; said control system including means for determining the volume of said siphon flush flow using said proportional relationship and said output signal, and for operating said first valve operator to close said high flow valve after a first predetermined siphon flow volume to provide a continuing trap reseal flow; and said control system including means for using said output signal to determine the volume of said trap reseal flow and for operating said second valve operator to close said low flow valve after a second predetermined trap reseal flow volume.