Abstract: Turbochargers of this invention comprise a turbine housing and a turbine wheel rotatably disposed therein. A center housing is connected to the turbine housing, and a compressor housing is attached to the center housing. A compressor is rotatably disposed within the compressor housing, and comprises two impellers placed in back-to-back orientation. A movable member is disposed within the compressor housing to downstream of the compressor to control the flow of air within the compressor housing. The position of the movable member can be operated to control the amount of pressurized air that is produced by one of the compressor impellers to provide enhanced compressor operating efficiency throughout the operating range and mass flow requirements of the engine.

Abstract: A turbine comprises a turbine wheel having radial blades and supported in a housing for rotation about an axis. An annular inlet passageway extends radially inwards towards the turbine wheel, the inlet passageway being defined between first and second facing annular walls. An annular array of vanes extend across the inlet passageway. Each vane has a trailing edge extending adjacent the turbine wheel blades, wherein the trailing edge of each vane deviates from a straight line over at least a portion of its length defined between its ends.

Abstract: A mixed flow turbine includes a hub attached to a rotation axis and a plurality of rotor blades. Each of the plurality of rotor blades is attached to the hub in a radial direction, and the hub is rotated based on fluid supplied to a rotation region of the plurality of rotor blades. Each of the plurality of rotor blades has a curved shape that convexly swells on a supply side of the fluid.

Abstract: A low head water turbine comprising a runner having a cylindrical outer surface and a plurality of similar blades similarly pivotably secured along their inner sides to the outer surface of the runner so as to pivot in the direction of rotation of the runner between a closed position lying adjacent the outer surface of the runner and an open position at an angle thereto. A housing having end walls and a rounded side wall extending therebetween, completely encases the runner and its blades. The runner is eccentrically mounted to end walls of the housing for rotation about a horizontal axis so that the cylindrical outer surface is spaced closer to an upper portion of the housing side wall and farther from a lower portion. A water inlet opening is located in a lower, forward portion of the housing, below the axis of rotation of the runner. A water outlet opening is located in a lower, rearward portion of the housing.

Abstract: Impeller 21 is rotatably disposed within a pump housing that includes pump cover 5 and pump body 18. Inlet port 19, body groove 31, partition 33 and blocking wall 37 are formed in the pump body 18. The body groove 31 defines a first pump channel 35, and the blocking wall 37 defines a enlarged channel portion 38. Outlet port 20, cover groove 32 and partition 34 are formed in the pump cover 5. The cover groove 32 defines a second pump channel 36. Distance {circle around (1)} between a terminal end of the first pump channel 35 and a terminal end of the outlet port 20, distance {circle around (2)} between a starting end of the enlarged channel portion 38 and a starting end of the second pump channel 36, length {circle around (3)} of the partition 34 and length {circle around (4)} of the partition 33 each are chosen to be optimum values such that the amount of fluid that is discharged through the outlet port 20 and the amount of fluid that flows in though the inlet port 19 increase.

Abstract: An in-line centrifugal fan including a housing having an inlet and an outlet spaced apart and substantially coaxial one to another and a motorized centrifugal-type impeller mounted centrally within the housing substantially coaxially between the inlet and the outlet. A plurality of spaced air flow redirecting vanes are each connected to and radially extend inwardly from the housing toward, but not to, a radially outermost perimeter of the impeller whereby air flow through the housing is increased by the vanes. Various vane configurations, clearances and number of vanes are disclosed.

Abstract: A stator for a hydrodynamic torque converter which is produced by injection molding with axially drawn dies. The stator hub has stator blades produced by use of a thermoplastic material to fill the dies in the injection molding process. The stator blades are positioned relative to one another on the stator hub in such a way that the flow outlet of every stator blade is arranged at an offset of only the width of a gap relative to the flow inlet of the subsequent stator blade in the circumferential direction.

Abstract: There is disclosed a housing for a centrifugal fan or blower or the like. The housing includes a wedge member for reducing the tonal noise generated during operation of the fan or blower. The wedge member is disposed on an interior surface of the housing chamber.

Abstract: A turbine with the improved inlet casing in accordance with the present invention includes a shaft which extends along and rotates about a central axis. The turbine also includes at least one rotor wheel which is mounted on and extends radially outward from the shaft to a radially outermost periphery. A plurality of buckets are arrayed circumferentially around the rotor wheel at the radially outermost periphery. A housing surrounds the rotor wheel and the stationary flow path component. A plurality of nozzle vanes are circumferentially arrayed in the stationary flow path component which is axially spaced from the buckets of the rotor wheel. The nozzle vanes are configured to direct fluid against an upstream side of the buckets and effect rotation of the rotor wheel. Inlet fingers are formed in the housing, with each of the inlet fingers defining a substantially straight passage between the turbine inlet or a control system and the nozzle vanes of the first stationary flow path component.

Abstract: A turboexpander, particularly suited for use in a cryogenic rectification system, comprises a center housing rotatably supporting an elongated shaft to opposite ends of which are mounted a turbine wheel within a turbine housing and a compressor wheel within a compressor housing or a brake within a load housing. The turbine wheel has circumferentially spaced turbine blades. Process fluid is introduced so as to flow through annular nozzles or guide vanes which encompass the turbine wheel. The guide vanes direct the process fluid through the turbine blades and each extends between a leading edge more distant from the turbine wheel and a trailing edge less distant from the turbine wheel. Each guide vane is substantially uncontoured between its leading edge and the trailing edge and is substantially thicker at the leading edge than at the trailing edge.

Abstract: An air turbine is provided having an entrance stator blade arrangement formed in two halfs, each containing a blade array, with the two halfs interleaved, upon turbine assembly, to thereby easily form an entrance stator with a multiplicity of entrance stator blades.

Abstract: There is disclosed a system and method for rotationally controlling a circular structure, such as a dome, from the outer circumference of the dome. The system uses an air driven motor having a circular fixed section and a movable section. The movable section is attached to the rim of the dome and is supported by pressurized air over the fixed section. Air, or other fluid, is used to drive the movable section, and hence the dome, around the circle. The dome speed is controlled by air pressure and the position of the dome is monitored.

Abstract: A radial inflow turbine having a radial nozzle assembly comprising a plurality of vanes, wherein downstream of the throat, the vane suction surfaces, relative to a radius of the circle on which the vane trailing edges lie, have a specified range of angles, or decreasing radii of curvature.

Abstract: An improved centrifugal compressor for use in gas turbine engines includes a secondary air flow inlet in the compressor shroud at a location downstream of the inducer, with passive elements in the secondary air inlet for effectively preventing flow out of the secondary air inlet from the compressor impeller at part speed design operation, while augmenting and enhancing flow of secondary air flow into the compressor impeller at maximum design speed operation of the compressor impeller.

Abstract: The nozzle has a full complement of blades, for use, for example, in a compressed-air turbine. However, a pair of peripheral walls, at opposite sides of the nozzle platform, block nozzle blade groups. The walls prevent fluid flow through those blade groups and, consequently, the nozzle has limited power. The method teaches the machining away of as much of the walls as is necessary to enhance the power of the nozzle by exposing more of the nozzle blades to free fluid flow therethrough. By providing such walled, fully bladed nozzles, and removing portions of the walls, one can meet any power requirement, from full power to any practical minimum by removing the walls entirety, or removing only a minor portion of each, respectively.

Abstract: An assembly for a cylindrical cage which includes vanes made up of blades and end lugs. The end lugs and vanes are attached to a frame by a ring element with a fastener securing the ring element, end lug and blade to the frame. The end lugs are dimensioned and shaped so that when the end lugs of adjacent vanes are nested together, the vanes are spaced apart the desired amount and the angular relationship between vanes is maintained so that the gas flow path between adjacent vanes has the desired configuration. The blades can be made separate from or integral with the end lugs. The invention is particularly designed for use in mounting guide vanes in a cage type air classifier for classifying particulate materials.

Abstract: The present invention includes an overhung turbine wheel which is provided with at least one ring of turbine blades and is connected with a shaft. In order to control the thermodynamically required circumferential speeds necessary to achieve maximum efficiency, the turbine wheel is designed as a closed disk which is narrow in the axial direction. The turbine wheel is integral with the turbine blades and furthermore is connected to the shaft through planar connecting surfaces having interfitting teeth. The turbine wheel has a relatively low mass, and the interfitting teeth allow a simple and optimal centering connection. Radial-flow turbines of this kind are standardized in model series, the turbine wheels and shafts in each case being provided with similar interfitting teeth to allow mutual combinations as desired.

Abstract: A method for manufacturing stay rings for a family of hydraulic turbine installations is disclosed. The stay ring comprises a plurality of stay vanes axially extending between two concentric ring members. Stay vanes are formed from flat plates and aligned circumferentially on the rings with radially outer leading edges presenting an intake angle acceptable for any turbine installation within a predetermined family of turbine installations. The vanes are sized such that their length measured from the leading edge to a trailing edge is such that the vane presents a discharge angle equal to a predetermined minimum discharge angle for the family of turbine installations for a given turbine installation. A desired discharge angle corresponding with a desired power output is predetermined and the trailing edges of the stay vanes are trimmed an amount sufficient for the stay vanes to present the desired discharge angle.

Abstract: A hydraulic turbine is of the kind having a distributor including a passage, without blades therein, which communicates with the movable blades of a rotor, having four blades, by means of injectors constituted by gaps formed between adjacent portions of a circular ring, the number of which is double that of the blades. The water escape axially to the center of the rotor chamber. The improvement of the present invention is that, in combination, the blades have a profile of an arc of a circle, and the portions of the stator ring which define the injector gaps each have a plane terminal face inclined at substantially 45.degree. to the corresponding radius of the respective portion of the ring and, for a first injector, forming an angle of substantially 135.degree. with a plane tangential to the external surface of the corresponding blade, when that blade occupies a position in which an adjacent blade is about to cooperate with the respective injector.

Abstract: A small gas turbine engine having a small, high speed shaft assembly including a central shaft member, a radial outflow compressor rotor secured to one end of the central shaft member with its inlet end disposed outboard of the shaft assembly, and a radial inflow turbine rotor secured to the other end of the central shaft member with its discharge end disposed outboard of the shaft assembly. The shaft assembly is supported at its ends, outboard of the rotors, by a pair of bearings which are axially secured but allow limited radial movement of the shaft assembly. An annular combustor is disposed between the turbine and compressor rotors in encircling relation to the central shaft member. Fuel is supplied to the combustor chamber from the exhaust end of the turbine through an axial passage in the shaft assembly opening at one end outboard of the exhaust end bearing and communicating at its other end with radial ports in the central shaft member arranged to sling fuel into the combustor chamber.

Abstract: A windmill comprising a generally cylindrically shaped housing having a vertical axis, a vertical shaft concentrically disposed in the housing and a rotor fixedly attached to the shaft and comprising a plurality of equally peripherally spaced, vertically extending trough-shaped wind scoops. Each scoop has a closed back surface with vertically extending leading and following edges and a vertically extending open front exposed to the wind. Each scoop is attached at its edges to the adjacent scoops to form a generally cylindrical scoop assembly.

Abstract: A sectionalized turbine wheel mounted for rotation about a vertical axis and having a plurality of turbine blades mounted to its circumference. There is an outer circumferential feeder pipe surrounding a distribution pipe that defines a distribution chamber, which in turn leads through a plurality of vane assemblies to the turbine blades. The turbine blades are substantially enclosed in a housing structure which provides an annular downward opening. Water under pressure flows into the feeder pipe, thence into the distribution chamber and through the vane means to impinge on the turbine blades, from which the water is discharged in a downward direction.