Abstract: A ported shroud for a compressor associated with a gas turbine engine includes a primary inlet configured to be in fluid communication with the compressor, and the primary inlet is defined to extend along a central axis of the ported shroud. The ported shroud includes a bellmouth that surrounds the primary inlet, and a port plenum configured to be in fluid communication with the compressor. The port plenum extends along an axis that is transverse to the central axis of the ported shroud and transverse to a direction of fluid flow. The port plenum has a port plenum inlet defined about the axis, and the port plenum inlet is defined through the bellmouth such that a tortuous path is defined to the port plenum inlet. The port plenum including a port plenum outlet downstream from the port plenum inlet configured to be in fluid communication with the compressor.

Abstract: A non-chokable pump includes an impeller having vanes for delivering solids-containing media. At least a portion of the vanes include a vane section that branches from a vane extending from a hub region of the impeller. The vane section preferably has a curvature greater than the vane extending from the hub region.

Abstract: Disclosed herein are various technologies pertinent to rocket engines, including injector, thrust chamber, and electrical turbopump devices that may be combined to provide a more efficient rocket engine. The electrical turbopump impeller includes a coolant bypass port fluidically connected with a coolant passage that passes through the impeller central hub and allows some of the propellant that is acted on by the impeller to bypass the impeller outlet and instead be flowed into the electrical turbopump housing so that the diverted propellant may be used to cool the various components housed within the housing such as the electric motor bearings, stator, rotor, and electronics.

Abstract: A blade module and a fan using the same are provided. The blade module includes a rotating shaft and a plurality of blades. Each blade is connected to the rotating shaft and includes a blade body and an airflow guiding portion. The airflow guiding portion is connected to the blade body and has an opening.

Abstract: A well fluid centrifugal pump has a number of stages, each of the stages having an impeller and a diffuser. The impeller has vanes curving outward from a central intake area to a periphery of the impeller. Each of the vanes has a convex side and a concave side. An upstream slot and a downstream slot extend through the vane from the convex side to the concave side. Each of the slots has an entrance on the convex side and an exit on the concave side, with the entrance being located upstream from the exit. The entrance has a greater cross-sectional area than the exit to divert well fluid flowing along the convex side to the concave side to remove accumulated gas.

Abstract: An impeller may include a hub section, a plurality of blades, and a shroud. The hub section may be mounted on a rotatable shaft. The hub section may define a central opening for the rotatable shaft to extend therethrough and may define a plurality of holes disposed in a circular manner about the central opening. The plurality of blades may be connected to or integral with the hub section. The shroud may be connected to or integral with the hub section and the plurality of blades. The plurality of holes may be either through holes or partially drilled holes. A bottom of some or all of the partially drilled holes may be flat, conical, or rounded. Some or all of the partially drilled holes may have one or more bleed holes that may permit quenching material to flow therethrough and prevent the quenching material from stagnating therein.

Abstract: An aeration system for the treatment and purification of liquid is presented. The aeration system includes a decompression chamber extending a length between an inlet end and an outlet end and a motor connected to the decompression chamber. The system includes drive shaft connected to the motor and extending into a hollow interior of the decompression chamber wherein airflow into the hollow interior is restricted through at least one inlet port. An orifice plate is connected to the drive shaft, wherein the orifice plate includes a plurality of apertures. A rotor disk is connected to the drive shaft, wherein the rotor disk includes a plurality of deflecting blades. When the outlet end of the system is positioned in liquid and the driveshaft and rotor disk are rotated micro bubbles are formed in the liquid thereby treating and purifying the liquid.

Abstract: A multistage separation system is provided. The multistage separation system may include a rotary shaft configured to drive a compressor. A rotating separation system may be coupled with the rotary shaft and may have an outlet in fluid communication with an inlet of the compressor. A static separation system may be coupled with a front end portion of the rotating separation system. The static separation system may include an axial inlet configured to receive a fluid and a static separation curve fluidly coupled with and disposed radially outward of the axial inlet. The static separation curve may include an outlet fluidly coupled with an inlet of the rotating separation system.

Abstract: A hollow rotor core assembly for a wind turbine with at least one set of cylindrical stacks having a plurality of guiding vanes on the internal surface of the cylindrical stacks, having at least one set of air openings to accept airflow into the hollow rotor core for creating when in rotation a vortex inside the hollow rotor core, having at one end a partial blocking device as such to allow the exhaust of only a fraction of the peripheral portion of the vortex and to redirect the remaining central portion of the vortex towards the other end of the hollow rotor core where the bulk of the airflow will be exhausted from the hollow rotor core.

Abstract: A heat-dissipation fan including a base and an impeller disposed at the base, wherein the impeller includes a plurality of first blades, a plurality of second blades and a plurality of connection ribs. Each of the first blades and each of the second blades are arranged alternately. Each of the connection ribs comprises a first edge, a second edge and a third edge. The first edge is connected with the first blade, the second edge is connected with the second blade, the third edge is connected with the first edge and the second edge, and the third edge and the second blade are spaced apart to form a first vent. The first edge comprises a first length, the second edge comprises a second length, and the first length is larger than the second length.

Abstract: An impeller includes a plurality of vanes formed around a hub, each of the plurality of vanes defines an offset between a leading edge and a trailing edge.

Abstract: Embodiments of a gas turbine engine cooling system for deployment within a gas turbine engine are provided, as are embodiment of a method for producing a gas turbine engine cooling system. In one embodiment, the gas turbine engine cooling system includes an impeller having a hub, a plurality of hub bleed air passages, and a central bleed air conduit. The plurality of hub bleed air passages each have an inlet formed in an outer circumferential surface of the hub and an outlet formed in an inner circumferential surface of the hub. The central bleed air conduit is fluidly coupled to the outlets of the plurality of hub bleed air passages and is configured to conduct bleed air discharged by the plurality of hub bleed air passages to a section of the gas turbine engine downstream of the impeller to provide cooling air thereto.

Abstract: A slinger shield structure is provided and includes a first annular disc, having a body, opposing faces defining an aperture extending through the body and through-holes extending through the body, which are arrayed around the aperture, a second annular disc having a body and opposing faces defining an aperture extending through the body, a hub for connection with the first and second annular discs at the respective apertures and radial vanes suspended between the first and second annular discs at a distance from the hub to define radial channels between adjacent radial vanes and drainage channels between the radial vanes and the hub.

Abstract: Impellers made of composite materials with flow path cavities covered by an erosion resistant coating are manufactured by covering removable molds having shapes corresponding to a negative geometry of the flow path cavities, with the erosion resistant coating using plating or thermal spraying. After shaping and curing a composite material around the molds covered with the erosion resistant coating, the molds are removed, while the erosion resistant coating remains on the composite impeller.

Abstract: A rotor includes a hub, rotary blades extending outwardly from the hub, and an annular wall surrounding the rotary blades. Each rotary blade includes a windward lateral surface and a leeward lateral surface at opposite sides thereof. The annular wall adjoins the outer ends of the rotary blades and is rotatable therewith. A perforation is defined in the annular wall between two neighboring rotary blades and adjacent to the leeward lateral surface of a leading rotary blade of the neighboring rotary blades.

Abstract: Device for discharging a fluid (5) fed into a reaction chamber (1) containing solid particles fluidized by said fluid, through a rotary chamber (100) provided with a finned wheel (13) having fins (14), which may deliver into said reaction chamber the solid particles that are concentrated along the rotary circular wall (8) of said rotary chamber under the effect of the centrifugal force, and processes for the catalytic polymerization, combustion, gasification, drying, impregnation, coating or other treatments of solid particles in suspension in a fluid or for the cracking, dehydrogenation or other catalytic conversions of a fluid using this device.

Abstract: A longitudinal stack of gas turbine engine rotor disks each include an annular spacer which transmits compressive preloading of the stack to an adjacent disk, the spacer and an annular shoulder on the disk rim defining an annular slot which accommodates the base of a segmented annular blade cluster which shields the rim from some of the heat associated with the flow of working fluid around the disks.

Abstract: A fluid flow machine includes a main flow path in which at least one row of blades (3, 4) is arranged, and a blade shroud (2) which forms a confinement of the main flow path in the area of a blade row (3, 4) and is arranged in a recessed cavity (10) of a surrounding physical structure (11). The cavity (10) so formed between the shroud (2) and the surrounding physical structure (11) is provided with an annular connection (14) to the main flow path at least on the outflow side of the blade shroud (2), and with the blade shroud (2) being penetrated by at least one secondary flow path (16) which, commencing at a location of high pressure on the shroud (2), issues at a surface wetted by the main flow.

Abstract: This disclosure features a transfer pump for pumping molten metal having a riser with a reusable socket. The pump includes a motor, support structure above a molten metal bath, a motor driven shaft and an impeller on an end of the shaft rotatable in a base. A riser made of refractory material extends from a transfer opening in the base to the support structure. The riser has a passageway for molten metal along a length of the riser. A clamp has a first clamp portion fixedly connected to the support structure and a second clamp portion that is pivotable with respect to the first clamp portion. A fastener is used to open and close the clamp. Sections of a split socket each have a flange and a body portion. The socket is received in the clamp such that the flanges of the socket are disposed above the clamp, and when the clamp is closed the socket holds the riser.

Abstract: A fluid-flow machine, especially for an aircraft engine, includes a rotor having rotor blades 3. The rotor blades 3 include, on a suction side 9, at least two zones of different surface finish, with one zone being positioned between a rotor blade 3 leading edge 5, a casing line 1, a line SLM and a line EL and being provided with a boundary layer-energizing surface structure, with the line SLM being a meridional flow line at a Mach number-critical blade height of the rotor, and with the line EL being a connecting line of all points E to form a chord-orthogonal projection line EL.

Abstract: A fan includes an impeller and a housing. The housing includes a base portion and a sidewall portion disposed around and connected with the base portion. A plurality of first recesses are disposed at a connection between the base portion and the sidewall portion, and a rib is disposed between every two adjacent first recesses. The impeller includes a hub having a base portion and a wall portion disposed around and connected with the base portion, and a plurality of blades disposed on a circumference of an outer wall of the wall portion. A plurality of third recesses are disposed at a connection between the base portion of the hub and the wall portion, and a rib is disposed between every two adjacent third recesses. The recesses can prevent the impeller and the housing from the defects and shape deformation caused by injection molding during manufacturing processes, and enhance the structural strength.

Abstract: A shroud 10 is carried by a housing 14 of a hydraulic machine 12. The shroud 10 at least partially encloses a rotating fan 74 disposed on a rotating shaft 72 that extends from the housing. The shroud 10 includes a mounting portion 22 having a peripheral mounting wall 50 that encircles the housing 14 with an interference fit and that includes tapered slots 60 for receiving tapered cooling fins 62 of the housing 14. The shroud 10 also includes a shroud portion 20 formed of integral one piece construction with the mounting portion. The shroud portion 20 includes a peripheral shroud wall 30 and a perforated shroud cover wall 38. The shroud portion 20 is arranged in cantilever relation to the mounting portion 22. A stop member 40, 44 engages a rotating end of the shaft 72 to limit deflection of the cantilevered shroud member toward the fan 74.

Abstract: An integral impeller and fuel pump for a small gas turbine engine, the impeller being a centrifugal impeller to supply compressed air to the combustor, the rotor disk of the centrifugal compressor having at least one radial fuel passage connecting a central bore of the rotor disk to a fuel nozzle located on the rear face of the rotor disk. A low pressure fuel supplied by a small pump delivers the fuel to the central bore where the fuel is collected within helical grooves and channeled into the radial fuel passages where the fuel is pressurized to a relatively high pressure due to the high rotational speed of the centrifugal compressor. Highly compressed fuel is injected into the combustor through fuel nozzles in an axial direction as the rotor disk rotates. Helical grooves in the central bore each connected to a radial fuel passage move the fuel to an opposite side of the central bore to counteract rotor imbalance.

Abstract: An impeller for a centrifugal pump that includes a disk-shaped shroud having a central axis, a front surface, a rear surface, and a circular perimeter, and a hub at the center of the shroud, the hub having an axial bore. The impeller further includes a first set of vanes on the front surface of the shroud, the first set of vanes extending radially inward from the perimeter towards the hub, a second set of vanes on the rear surface of the shroud, the second set of vanes extending radially inward from the perimeter towards the hub, a balancing area on the rear surface of the shroud, the balancing area extending radially outward from the hub, and a number of openings in the shroud, the number of openings configured to allow a fluid to pass from one side of the shroud to the other.

Abstract: The present invention obtains a desired cooling effect in a fan motor as well as suppresses any increase in the noise level in a centrifugal fan that sucks in air from the rotary shaft direction and blows out air in a direction that intersects the rotary shaft, and in an air conditioner provided therewith. The centrifugal fan of the air conditioner comprises a fan motor, a hub, a plurality of blades, and an air guide. The hub has cooling air holes, and is coupled to and rotationally driven by a shaft of the fan motor. The air guide guides a portion of the blown out air to the vicinity of the fan motor, cools the fan motor, and then guides the air flow so that the revolving direction velocity decreases when that air is blown out from the cooling air holes to the side of the hub opposite the fan motor.

Abstract: A ventilation arrangement for a wind turbine includes an air inlet opening located in a nose cone of said wind turbine, a manhole cover for covering a manhole of a rotor hub of said wind turbine, the manhole cover providing a vent opening for venting hot air from an internal space of said rotor hub, and a flexible piping establishing fluid communication between the internal space of the rotor hub and the air inlet opening.

Abstract: A gas turbine engine includes a tip shroud ring rotatably supported on a last stage blade assembly in a turbine. The tip shroud ring is formed entirely of a fiber reinforced ceramic matrix composite material to provide a very light weight tip shroud ring, but also a very strong ring. The blades include pins extending from the tips, and the tip shroud ring includes holes in which the pins slide. Thus, the tip shroud ring is completely supported by the blade tip pins, and the centrifugal force developed by the rotation of the tip shroud ring does not add to the tensile force developed along the blades. Thus, the maximum rotational speed of the turbine rotor as defined by An2 can be increased. Also, because the blade tips are secured to the tip shroud ring in a circumferential direction, the tip shroud ring acts to dampen the bladed turbine by allowing only the middle of the blade to vibrate.

Abstract: An inertial particle separator (IPS) for an inlet bell-mouth that couples an inlet air plenum to a compressor in a gas turbine engine, wherein the IPS removes air particles within reverse air flow passing through at least one bell-mouth aperture in the inlet bell-mouth into shroud bleed apertures in a shroud for the compressor, comprising: at least one baffle that protrudes from each bell-mouth aperture positioned to bend a reverse air flow stream through the bell-mouth aperture to a degree that forces particles out of the reverse air flow stream and into the inlet air plenum.

Abstract: A fuel nozzle assembly for a gas turbine includes a plurality of circumferentially spaced vanes with holes for flowing fuel from plenums within the vanes through holes in the vane walls for premixing with air. To tune the nozzle assembly, the holes are resized by reforming the existing holes to a predetermined hole size, securing plugs into the holes, and forming holes through at least certain of the plugs to diameters less than the diameter of the existing holes.

Abstract: A multifunctional back-flowing strong-suction blower exhibits low energy consumption, mass airflow, enhanced capability of handling polluted material, high efficiency, and low noise. The strong-suction blower may also reduce the risk of pollution and corrosion of the through-flow parts in the blower housing.

Abstract: One aspect of the invention is directed to an impeller made of a non-metallic, heat resistant material, comprising a generally cylindrical shaped body, first and second generally planar end faces and a side wall extending between the first and second faces. A plurality of passages have inlets circumferentially spaced apart from each other on the first face, outlets at the impeller sidewall, and connecting portions extending between the inlets and the outlets transverse to the central axis. Another aspect of the invention is directed to an impeller comprising a central hub portion and first and second impeller bases, including end faces, transverse to a central axis. Vanes extend from the central hub portion between the impeller bases. Cavities are formed between the impeller bases and between adjacent vanes. Molten metal inlets on the end faces for molten metal to reach the cavities. Pumps are also disclosed using the inventive impellers.

Abstract: An impeller pump for a fluid includes a rotary impeller (10; 20) and a pump casing (4). The pump casing defines a first pump channel (51) and a second pump channel (71). The impeller is disposed within the pump casing and opposes to the first pump channel and the second pump channel, respectively. The fluid discharged from the first pump channel and the fluid discharged from the second pump channel converge at a convergence channel (62). A pulsation canceling device serves to cancel pulsations of the fluid discharged from the first pump channel and the second pump channel, respectively. An impact reducing device (155, 175; 357; 455, 457; 555, 557) serves to reduce impacts produced by at least one of the flow of the fluid from the first pump channel and the flow of the fluid from the second channel.

Abstract: A centrifugal pump, the impeller (2) of the pump having one or more holes through the impeller adjacent to its hub. The hole or holes (7) are positioned between the vanes (3) of the impeller and closer to the hub than the periphery of the impeller. The total area of the holes is more than 0.4% of the area of the impeller, preferably 0.5-0.6% of the area of the impeller or more than 2% of the inlet area of the pump, preferably 2.5-5% of the inlet area. Preferably there is a cavity or a pit (8) at the back of the impeller.

Abstract: It is the object of the present invention to provide a centrifugal blower fan capable of reducing a noise in an operating rotational speed range without degradation in blàwer performance. A centrifugal blower fan comprises a base plate, and a plurality of fan blades arranged on the base plate in a radial pattern to define a plurality of air passages between the pairs of adjacent fan blades, respectively. A portion of the base plate serving as a bottom wall of each of the air passages is formed with a plurality of through-holes.

Abstract: A turbofan to reduce noise through a suppression of turbulent air flow at an outlet thereof and also to guide the air discharged from the outlet in a specific discharging direction, and an air conditioner equipped with the turbofan to improve an efficiency of a heat exchange. The turbofan includes a rotating plate coupled to a shaft of a drive motor, a plurality of blades radially arranged on a peripheral area of a front face of the rotating plate, a ring-shaped shroud joining to ends of the plurality of blades, and a flow guide rib extending from a peripheral edge of the rotating plate in a rearward direction to guide the air discharged from the turbofan.

Abstract: The invention provides a high-strength stamped aluminum brazed turbine for use in an automotive transmission torque converter, and a method therefor. The method includes stamping aluminum inner and outer shells each having a plurality of slots, and stamping a plurality of aluminum turbine blades having tabs. The tabs of the turbine blades are inserted into the slots of the inner and outer shell, and the tabs are bent to attach the turbine blades to the inner and outer shell. The turbine blades are brazed to the inner and outer shell with a silicon material, thereby forming a turbine of sufficient strength to operate in the powerflow path of an automotive transmission using transmission oil as its working fluid.

Abstract: A centrifugal fan and a rotor for a centrifugal fan comprising axial blades, straight blades, and a hub having a radius that increases as a function of distance from the fan inlet.

Abstract: A rotor assembly includes a housing and a hub. The housing has an open end and an opposed closed end, and is formed with a raised portion in the central location of the closed end. The hub is mounted on the closed end of the housing and covers the housing except for the raised portion to construct a thin motor.

Abstract: An impeller system for use in a molten metal pump, the impeller system including a generally cylindrical outer wall with outlets therein, an impeller lid mounted on the impeller walls, the impeller lid including a plurality of inlets, with the shaft being mounted directly into a base, which is mounted relative to the outer wall. The impeller system has an open interior defined by the outer wall, the lid and the base, and the impeller shaft mounts directly into the base without the need for a collar or attachment to the impeller lid.

Abstract: A centrifugal pump pumps well fluid with a high gaseous content by utilizing an impeller design for use in gaseous liquids. The impeller has high discharge angles and large balance holes. The impeller has short and long vanes alternating with each other. The shorter vanes have a leading surface that is concave in shape. In one design, the longer vanes have a radially outward portion of a leading surface that is concave in shape. The radially outward portion of the longer vanes of this design has substantially the same radius of curvature as the shorter vanes. The radially inward portion of the leading edge of the longer vanes can be concave or convex in shape.

Abstract: One aspect of the invention is directed to an impeller made of a non-metallic, heat resistant material, comprising a generally cylindrical shaped body, first and second generally planar end faces and a side wall extending between the first and second faces. A plurality of passages have inlets circumferentially spaced apart from each other on the first face, outlets at the impeller sidewall, and connecting portions extending between the inlets and the outlets transverse to the central axis. Another aspect of the invention is directed to an impeller comprising a central hub portion and first and second impeller bases, including end faces, transverse to a central axis. Vanes extend from the central hub portion between the impeller bases. Cavities are formed between the impeller bases and between adjacent vanes. Molten metal inlets on the end faces for molten metal to reach the cavities. Pumps are also disclosed using the inventive impellers.

Abstract: A hydrodynamic sealing system for centrifugal systems comprising a double, asymmetric impeller attached to a rotary shaft, a fixed housing that surrounds the double impeller, a fluid inlet (5) in an axial direction and a fluid outlet in a radial direction with respect to the double impeller, with the double impeller defining a front side which receives the entry of fluid and a rear side close to the sealing zone of the shaft with the fixed housing. The double impeller is provided with means for taking the fluid from its front side to its rear side, so that when the double impeller rotates there arises a control of the pressure in the sealing zone, thus permitting balancing of the stresses on the double impeller and optimization of the sealing system.

Abstract: A vortex generating apparatus has the capability of attracting and removably adhering one or more solid objects. The apparatus comprises an impeller housed within a shell. The vortex attractor generates a vortical fluid flow generally in the form of a helical or spiral shaped flow. The fluid flow creates a low pressure region extending from the impeller end of the device. This low pressure region is contained by the walls of the fluid flow, thus directing the attractive forces toward a surface and minimizing effects of ambient fluid on the system. When the surface is part of a stationary object, wall, floor or ceiling, the vortex attractor may move toward and adhere to the surface. When the surface is part of a movable object, the vortex attractor may attract the object and maintain the attracted position.

Abstract: A multi-modal forced vortex device is described having a top plate and a side wall creating a partially enclosed volume. The top plate includes one or more adjustable fluid openings to permit, or restrict, fluid flow into and out of the partially enclose volume. Rotating blades housed within the partially enclosed volume are manipulated (through control of their pitch and, possibly, their speed) in conjunction with the adjustable fluid openings to generate a variable magnitude attractive force in a first mode, a variable magnitude down or pushing force in a second mode, a variable magnitude up or lifting force in a third mode or variable magnitude yaw, pitch and roll forces in a fourth mode.

Abstract: A water pump (10) and impeller (30) for use in applications such as internal combustion engines. A plurality of holes (40, 44) are formed near the hub and periphery of the impeller (30) of the water pump to provide coolant flow through a cavity (22) housing a seal. The seal (18) is thereby cooled to prevent premature failure of the seal (18) due to overheating.

Abstract: A turbofan and a mold used to manufacture the same, which enables the turbofan to be integrally molded by a single molding process. The turbofan has a rotating plate coupled to a shaft of a driving motor at its center, a plurality of blades radially disposed at and integrally formed with a periphery of the rotating plate, and a ring-shaped shroud integrally formed with front ends of the blades to face the rotating plate.

Abstract: An impeller system for use in a molten metal pump, the impeller system including a generally cylindrical outer wall with outlets therein, an impeller lid mounted on the impeller walls, the impeller lid including a plurality of inlets, with the shaft being mounted directly into a base, which is mounted relative to the outer wall. The impeller system has an open interior defined by the outer wall, the lid and the base, and the impeller shaft mounts directly into the base without the need for a collar or attachment to the impeller lid.

Abstract: A water pump (10) and impeller (30) for use in applications such as internal combustion engines. A plurality of holes (40, 44) are formed near the hub and periphery of the impeller (30) of the water pump to provide coolant flow through a cavity (22) housing a seal. The seal (18) is thereby cooled to prevent premature failure of the seal (18) due to overheating.

Abstract: A blower with the improved P-Q characteristics is provided. A blower comprising a shaft rotatably supported in a tubular casing, a cup shaped motor yoke 11 fixed to the shaft, and a body portion 15 of an impeller 14 comprising a large number of blades 13 on an outer peripheral portion is fixed to the motor yoke 11, wherein the blower is characterized in that substantially ring-like openings 15b are provided at a portion where the blades 13 of the body portion 15 are mounted and on a circumference around the shaft. Since air flow is facilitated by the openings 15b, the P-Q (pressure—flow rate) characteristics are improved.

Abstract: A blower with the improved P-Q characteristics is provided. A blower comprising a shaft rotatably supported in a tubular casing, a cup shaped motor yoke 11 fixed to the shaft, and a body portion 15 of an impeller 14 comprising a large number of blades 13 on an outer peripheral portion is fixed to the motor yoke 11, wherein the blower is characterized in that substantially ring-like openings 15b are provided at a portion where the blades 13 of the body portion 15 are mounted and on a circumference around the shaft. Since air flow is facilitated by the openings 15b, the P-Q (pressure—flow rate) characteristics are improved.