Rotary drag valve
AssigneeControl Components, Inc.
InventorDuc Thanh Tran
Life of this patent
Estimating the term…
Abstract
A valve assembly comprising a rotary closure element which defines an axis of rotation and is selectively movable between a fully open position and a fully closed position. Mounted to and movable with the rotary closure element is an impedance assembly. The impedance assembly defines an inflow end and an outflow end, and comprises a plurality of fluid passageways of varying noise attenuating capability which extend from the inflow end to the outflow end. Also partially defined by the impedance assembly is a flow opening which extends from the inflow end to the outflow end.
Claims20
A valve assembly, comprising:
- a rotary closure element defining an axis of rotation and selectively movable between a fully open position and a fully closed position;
- and
- an impedance assembly mounted to and movable with the rotary closure element, the impedance assembly defining an inflow end and an outflow end, and comprising:
- a plurality of fluid passageways of varying noise attenuating capability extending from the inflow end to the outflow end, at least some of the fluid passageways being tortuous and defining a series of turns which extend at generally right angles relative to each other, with the tortuous fluid passageways of the impedance assembly define differing numbers of turns;
- the impedance assembly and the closure element collectively defining a flow opening which extends from the inflow end to the outflow end;
- the impedance assembly being mounted to the closure element such that flow is applied initially to the tortuous passageways having a greater number of turns when the closure element is moved from the fully closed position toward the fully open position.
A valve assembly, comprising:
- a rotary closure element defining an axis of rotation and selectively movable between a fully open position and a fully closed position;
- and
- an impedance assembly mounted to and movable with the rotary closure element, the impedance assembly defining an inflow end and an outflow end, and comprising:
- a plurality of impedance plate assemblies secured to each other in a stacked arrangement along an axis which is generally parallel to the axis of rotation;
- each of the impedance plate assemblies including a plurality of openings formed therein which collectively define a plurality of fluid passageways of varying noise attenuating capability extending from the inflow end to the outflow end when the impedance plate assemblies are stacked upon each other.
A valve assembly, comprising:
- a rotary closure element defining an axis of rotation and selectively movable between a fully open position and a fully closed position;
- and
- an impedance assembly mounted to and movable with the rotary closure element, the impedance assembly defining a beveled inflow end and an outflow end, and comprising:
- a plurality of fluid passageways of varying noise attenuating capability extending from the inflow end to the outflow end;
- the impedance assembly and the closure element collectively defining a flow opening which extends from the inflow end to the outflow end.
Dependencies are inferred from the claim text.