US 12,268,981 B2
Motorized valve with washing filter extending from a bleed conduit inlet into valve duct
August M. Coretto, Windsor, CT (US); David J. Zawilinski, West Granby, CT (US); Scott W. Simpson, Feeding Hills, MA (US); Peter J. Dowd, Granby, CT (US); Robert DeFelice, South Windsor, CT (US); and John M. Dehais, Windsor, CT (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Feb. 23, 2022, as Appl. No. 17/678,358.
Prior Publication US 2023/0264132 A1, Aug. 24, 2023
Int. Cl. B01D 53/22 (2006.01); B01D 46/24 (2006.01); B01D 46/44 (2006.01); B01D 46/52 (2006.01); B64D 13/06 (2006.01); F16K 11/22 (2006.01); F16K 11/24 (2006.01); F16K 31/04 (2006.01)
CPC B01D 46/44 (2013.01) [B01D 46/2411 (2013.01); B01D 46/521 (2013.01); B64D 13/06 (2013.01); F16K 11/22 (2013.01); F16K 11/24 (2013.01); F16K 31/04 (2013.01); B64D 2013/0618 (2013.01); B64D 2013/0644 (2013.01); B64D 2013/0651 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A valve assembly, comprising:
a valve duct having an upstream end, a downstream end and a duct wall extending from the upstream end to the downstream end, a first conduit extending from a first end at the valve duct to a second end spaced apart from the first end, the first conduit terminating at a valve assembly component, and a washing filter that includes filter media, wherein the filter media extends into the valve duct to remove particles and provide a clean flow to the first conduit, wherein the washing filter extends from the first end of the first conduit into the valve duct; a closure disk disposed within the valve duct between the upstream and downstream ends, and downstream of the washing filter; a shaft connected to the closure disk, and a torque motor operatively coupled to the shaft;
a housing, a piston assembly disposed within the housing, the piston assembly including a piston chamber, the piston chamber defining a first wall and a second wall that is opposite the first wall, and a transverse wall extending from the first wall to the second wall; the first wall defining a first chamber aperture; the piston assembly including a first piston configured to move in the piston chamber between the first and second walls to define a first pressure chamber between the first piston and the first wall the first piston being operationally connected to the shaft,
the valve assembly component is a flow chamber disposed in the housing, and the second end of the first conduit terminates at the at the flow chamber; and
a second conduit extending from a first end at the flow chamber to a second end at the first chamber aperture, a control member, that is a disk connected to a motor drive shaft, in the flow chamber that is configured to control access from the first conduit into the flow chamber, to thereby control access to the second conduit; and wherein the torque motor disposed in the housing is configured to control the control member.