Flush valve with flow passage narrowing non-linearly

Details Flush valve with flow passage narrowing non-linearly Flush valve with flow passage narrowing non-linearly

E - Fixed Constructions

03

D

E03D 1/38 (2006.01)

Patent

CA 2598280

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.

Un robinet de chasse des W-C (26) comporte un corps de robinet (28) avec un canal d'écoulement (44) qui se rétrécit de façon non linéaire depuis le siège du robinet (50). Le canal d'écoulement (44) est formé par une surface qui suit une expression polynomiale de manière à définir un profil d'écoulement dérivé par calcul qui suit au plus près le rétrécissement du filet d'eau qui tombe, à mesure qu'il accélère par gravité. Le profil d'écoulement non linéaire réduit la présence d'air dans la vanne après le début du cycle de rinçage, ce qui permet d'assurer une meilleure efficacité de fonctionnement. La soupape peut aussi avoir un débordement de bouche large qui se rétrécit de manière à améliorer la gestion des débordements.

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