Abstract: Disclosed herein are embodiments of a value assembly, methods of manufacturing the same, and methods of using the same. In one embodiment, a sensor assembly comprises a housing having a through-bore, a first flap coupled to a first shaft and a second flap coupled to a second shaft, wherein the first shaft and the second shaft are coupled within the housing; and one or more gear assemblies coupled to the first shaft and the second shaft, wherein the gear assemblies are configured to rotate the first flap and the second flap from a first position to a second position to prevent a flow from traversing through the through-bore, and from the second position to the first position to allow the flow to traverse through the through-bore.

Abstract: A gas turbine engine component includes a heat exchange structure having an upstream end and a downstream end. A diffusing duct is associated with the upstream end. A throttle member controls air flow through the heat exchange structure, wherein the throttle member: (a) has a non-circular cross section; and (b) is mounted to the downstream end of the heat exchange structure or is mounted between the upstream end and the diffusing duct.

Abstract: An illustrative damper system includes a damper blade that is configured to be positioned within a duct, such as a bypass duct of an HVAC system. A shaft is in communication with the damper blade, a torsion spring is in communication with the shaft, and a force adjustment mechanism is in communication with the torsion spring. The shaft, the damper blade, and the torsion spring may be configured such that the shaft may affect movement of the damper blade about a rotation axis and the torsion spring may provide a bias force to the shaft for biasing the damper blade toward a desired position (e.g. closed position).

Abstract: A valve for a plenum or pipe is disclosed. The valve includes a large butterfly valve element pivotally supported in the plenum by at least one rod. The large butterfly valve element includes an opening for accommodating a small butterfly valve element. The small butterfly valve element is coupled to the rod by a shaft. The shaft includes a recess that accommodates the small butterfly valve element but which includes a clearance between the small butterfly valve element and the shaft to permit limited rotation of the shaft before the small butterfly valve element engages at least one wall of the recess of the shaft. Thus, the combination of the shaft and the small butterfly valve element provide limited flow through the plenum. Further rotation of the shaft, however, results in rotation of the large butterfly valve element to provide greater flow through the plenum.

Abstract: An air intake device for an engine is provided that includes a bypass (20) connected to an air intake path (2) while bypassing a throttle valve (5), and a bypass valve (V) for controlling the degree of opening of the bypass (20), the bypass valve (V) being formed from a tubular valve chamber (15) having its interior opening on the upstream side of the bypass (20) and having an inner face with a metering hole (16) opening toward the downstream side of the bypass (20), and a valve body (25) slidably but non-rotatably fitted into the valve chamber (15) and opening and closing the metering hole (16), wherein an inner face (A) of the valve chamber (15) on which the metering hole (16) opens and an outer face (B1) of the valve body (25) opposing the inner face (A) and covering the metering hole (16) are formed in the same shape so as to enable them to be in intimate contact with each other, and other inner (A) and outer faces (B2) of the valve chamber (15) and the valve body (25) are formed so that there is a gap (g

Abstract: An air intake device for an engine is provided in which a bypass valve (V) is formed from a tubular valve chamber (15) having its interior opening on the upstream side of a bypass (20) and having an inner face with a metering hole (16) opening toward the downstream side of the bypass (20), and a valve body (25) that is slidably but non-rotatably fitted into the valve chamber (15) and that opens and closes the metering hole (16), wherein the valve chamber (15) and the metering hole (16) are formed in a bypass valve holder (10) provided so as to be connected to a throttle body (1), and a dividing wall (17) that divides the metering hole (16) into a plurality of small metering holes (16a, 16b) arranged in the peripheral direction of the valve chamber (15) is formed in the bypass valve holder (10) so as to be continuous with an inner peripheral face of the valve chamber (15). This can prevent any hindrance to the closing movement of the valve body of the bypass valve even when a large metering hole is employed.

Abstract: An exhaust bypass valve assembly for an internal combustion engine includes an exhaust bypass valve having valve structure coupled to a rotatable shaft such that rotation of the shaft moves the valve structure between opened and closed positions. An actuator is disposed remotely from the bypass valve for selectively causing rotation of the shaft associated with the valve structure in opposing directions. Linkage structure is connected between the actuator and the shaft to transfer motion of actuator to the shaft.

Abstract: The present invention relates to a multi-valve damper which divides a section of an airflow duct into at least two airflow sections. The damper has a plug body having a proximal end and a distal end. The plug body is adapted to separate a section of an airflow duct into at least two airflow sections. At least two damper blades may be mounted on the distal end of the plug body, each of the damper blades controlling airflow in a respective airflow section. At least one airflow sensor may be provided in each of the airflow sections for controlling the respective damper blades. An actuator mechanism responsive to the sensors may be provided for opening and closing the damper blades. At least one of the proximal end and the distal end of the plug body may have an aerodynamic shape.

Abstract: A VAV box includes a housing formed by a top wall, a bottom wall, and a pair of vertical side walls. A blade is mounted for rotation about a vertical axis within an air flow passageway defined by a hollow interior of the housing. A first protuberance formed on an interior side of the first side wall has a leading wall swept back relative to an entrance to the box, a trailing wall swept forward relative to the entrance, and a concave wall that interconnects the innermost ends of the leading and trailing walls. A second protuberance having the same structure is formed on an interior side of the second side wall. The protuberances produce a linear response in air flow to changes in blade position, eliminating the non-linear response of prior art VAV boxes.

Abstract: A valve system having high maximum gas flow rate and fine control of gas flow rate, includes a valve housing for blocking gas flow through a gas flow path, a large area opening through said housing having a first arcuate side wall and a small area opening through said housing having a second arcuate side wall, and respective large area and small area rotatable valve flaps in said large area and small area openings, respectively, and having arcuate edges congruent with said first and second arcuate side walls, respectively and defining therebetween respective first and second valve gaps. The first and second valve gaps are sufficiently small to block flow of a gas on one side of said valve housing up to a predetermined pressure limit, thereby obviating any need for O-rings.

Abstract: The present invention relates to a valve device for regulating a fluid, particularly a gaseous fluid, in a conduit portion, comprising a valve body fixed to a support spindle extending transversely into said portion and mounted with the ability to rotate therein, said conduit portion comprising, on either side of said spindle, opposing internal steps forming two bearing surface portions for corresponding edge parts of said valve body, in the closure position thereof, each step extending substantially over approximately half of the internal circumference of the conduit portion in the region of the mounting position of the support spindle.

Abstract: The present invention relates to a multi-valve damper which divides a section of an airflow duct into at least two airflow sections. The damper has a plug body having a proximal end and a distal end. The plug body is adapted to separate a section of an airflow duct into at least two airflow sections. At least two damper blades may be mounted on the distal end of the plug body, each of the damper blades controlling airflow in a respective airflow section. At least one airflow sensor may be provided in each of the airflow sections for controlling the respective damper blades. An actuator mechanism responsive to the sensors may be provided for opening and closing the damper blades.

Abstract: A throttle valve assembly for a deposition chamber or the like is disclosed. The throttle valve assembly comprises a shaft including a first portion and second portion. At least one throttle vane or plate is coupled to the first portion of the shaft and a valve gear is coupled to the second portion of the shaft. A positioning element is provided to couple the valve gear to the shaft in only one rotational orientation.

Abstract: An improved butterfly damper for air delivery systems, having multiple rotatable blades, and a centrally located blade rotating, or actuation means. Each blade comprises an offset, or displaced portion to allow concealment of the actuation mechanism upon closure. This offset portion allows the blades, upon closure, to meet and form a seal around the least complex portion of the actuation mechanism.

Abstract: A fluid flow control damper assembly having a damper vane and a piston actuator is relatively easy to install when the outer surface of a duct is inaccessible. The piston actuator includes a powder metal piston, lacking an elastomeric (for example, rubber) seal, that is closely received within a glass cylinder. The glass cylinder has a fitting that closes one end of the cylinder and is connectable to a pneumatic control system. A drive rod is connected between the piston and the damper vane to move the damper vane between an open position and a closed position.

Abstract: A throttle gate valve (10) including an upright, generally rectangular valve housing (12), in which is positioned a linearly movable gate valve (32) for closing off a thru-opening (15) formed in the lower part of housing (12). A pneumatic actuator assembly (14) is provided for moving the gate valve between its opened and closed positions. A throttle vane assembly compartment (16) forms the lower side of valve housing (12) and frames thru-opening (15), and includes a set of throttle vanes (18) rotatably positioned within thru-opening (15), and a drive actuator compartment (20) and motor (21) for controlling the position of throttle vanes (18). A drive actuator (51) is provided for rotating vanes (18) and is sealed by a bellows shield (70) at the point where the drive actuator extends into the interior of the housing.

Abstract: A valve has an integral flow switch with a passageway provided through the valve member such as a butterfly disk to an inlet of the flow switch. An outlet of the flow switch communicates with the outlet of the valve.

Abstract: A valve (8) is fitted into a channel arrangement having a first inner channel (1) which extends longitudinally carrying a first fluid. An outer channel (4) encloses channel (1) and is intended for the passage of a second fluid at a lower temperature. The valve assembly has at least two valves to control flow through the outer channel (4). The outer channel (4) is made up of two. U-shaped channel portions (12,13) each extending outwardly with regard to the inner channel (1). Each of the channels (12,13) has at least one of said first valves (9) to control fluid flow and the inner channel (1) may have another valve (10) to control it's flow.