Valves and valve actuation – Electrically actuated valve – Freely rotatable ball valve
Patent
1994-04-20
1996-08-27
Lee, Kevin
Valves and valve actuation
Electrically actuated valve
Freely rotatable ball valve
251360, F16K 3106
Patent
active
055492746
ABSTRACT:
A valve for selectively permitting the flow of fluid therethrough is disclosed including a housing having at least one inlet and at least one outlet, a valve seat provided in the housing about the inlet, a displaceable ball for cooperating with the valve seat for sealing fluidic communication between the inlet and outlet and a ball guide for guiding the ball between a closed position in contact with the valve seat and an open position spaced from the valve seat. The ball guide includes a central bore for reciprocally receiving the ball and a plurality of circumferentially spaced fluid passages in fluid communication with the inlet, the passages extending substantially parallel to a longitudinal extent of the central bore such that a flow of fluid through the inlet is directed radially outwardly from the central bore and into the circumferentially spaced passages when the ball is in the open position. Fluid flow through the valve seat is thus restricted to flow through a sharp right angle bend allowing more fluid momentum to be used to hold the ball in a stable position. Accordingly, a majority of the flow is directed underneath the ball and only a small amount of flow goes through the clearance between the ball and the central bore of the ball guide, such that the ball is maintained in a stable condition thus resulting in more consistent flow metering.
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Benson Donald J.
Buchanan David L.
Cummins Engine Company, Inc.
Lee Kevin
Leedom Jr. Charles M.
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