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.
Claims35
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;
- the impedance assembly and the closure element collectively defining a flow opening which extends from the inflow end to the outflow end.
An impedance assembly for retrofit attachment to a rotary closure element defining an axis of rotation and selectively movable between a fully open position and a fully closed position, the impedance assembly comprising:
- a plurality of impedance plate assemblies secured to each other in a stacked arrangement such that the impedance plate assemblies collectively define an inflow end and an outflow end of the impedance assembly;
- 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 method of retrofitting a rotary valve including a rotary closure element which defines an outer surface, a bore and an axis of rotation, and is selectively movable between a fully open position and a fully closed position with an impedance assembly, the method comprising the steps of:
- (a) securing a plurality of impedance plate assemblies to each other in a stacked arrangement along a plate assembly axis to form the impedance assembly, 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 an inflow end to an outflow end of the impedance assembly when the impedance plate assemblies are stacked upon each other;
- and
- (b) mounting the impedance assembly within the bore of the closure element.
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;
- upstream and downstream impedance assemblies mounted to and movable with the rotary closure element, the upstream and downstream impedance assemblies each 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;
- the upstream and downstream impedance assemblies and the closure element collectively defining a flow opening which extends from the inflow end of the upstream impedance assembly to the outflow end of the downstream impedance assembly.
Dependencies are inferred from the claim text.