Flush valve with flow passage narrowing non-linearly

A flush valve (26) for a toilet has a valve body (28) with a flow passage (44) that narrows non-linearly down from the valve seat (50). The flow passage (44) is formed by a surface that follows a polynomial expression so as to define a computationally derived flow profile that more closely follows t...

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Bibliographic Details
Main Authors MUKERJI SUDIP, HALLORAN DANIEL N, BOGARD DOUGLAS E, DENZIN PETER W
Format Patent
LanguageChinese
English
Published 01.12.2010
Subjects
FIXED CONSTRUCTIONS
FLUSHING VALVES THEREFOR
SEWERAGE
WATER SUPPLY
WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES
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Summary:A flush valve (26) for a toilet has a valve body (28) with a flow passage (44) that narrows non-linearly down from the valve seat (50). The flow passage (44) is formed by a surface that follows a polynomial expression so as to define a computationally derived flow profile that more closely follows the narrowing exhibited by falling water as it accelerates under gravity. The non-linear flow profile of the valve reduces the presence of air in the valve after a flush cycle is initiated so that greater flush efficiency can be achieved. The flush valve can also have a wide mouth overflow that narrows to improve in an overflow situation.
Bibliography:Application Number: CN200680005706