Abstract: An impeller having a hub, blades extending from the hub along respective spans from roots to tips, the blades extending along respective chords from leading edges to trailing edges, the leading edge of at least one of the blades having a cutback section defining a sweep at the root, the cutback section extending in a spanwise direction from the hub to a location at least about 5% of the span from the hub of the at least one of the blades, and the cutback section extending in a chordwise direction along at least about 5% of the chord of the at least one of the blades.

Abstract: A rotor disk for a gas turbine engine includes a disk body having a central bore extending therethrough. The disk body includes a bore body that extends around the central bore, a web that extends radially outward from the bore body having decreased thickness relative to the bore body and a peripheral rim that is located at an outer end of the web. The peripheral rim includes blade mounting structures for engaging complementary mounting structures of rotor blades. The bore body has a bore cavity that extends continuously through the bore body and about an entire periphery of the central bore. The bore cavity has a central axis that forms a circle about the central bore.

Abstract: A fan impeller includes a hub, a shaft, a metal housing, a magnetic ring and a plurality of blades. The outer periphery of the hub has a curved surface. The shaft is disposed in the hub and connected to the hub. The metal housing has an annular shape and is disposed in the hub. The magnetic ring is disposed at the inner side of the metal housing. The blades are disposed around the outer periphery of the hub.

Abstract: Fan (16), in particular for an aircraft cooling unit, having a wheel (128) comprising a hub (138) and an annular array of blades (140), a shaft assembly (136) for driving the wheel about an axis (A), and fusible means for connecting the hub of the wheel to the shaft assembly, said fusible connecting means comprising a first mounting sleeve through which the shaft assembly extends and which is surrounded by the hub, and fusible safety elements (174) which extend parallel to the axis (A) and are configured to break and to disengage the wheel from the shaft assembly when said wheel rotates and a driving torque of the wheel transmitted by the shaft assembly exceeds a certain threshold, characterised in that the connecting means comprise a second wearing sleeve (143) which is inserted between the first sleeve and the hub and through which the fusible elements extend, the second sleeve being made of a material which is different from that of the first sleeve and subject to wear by friction and/or by heating if the

Abstract: A turbocharger turbine wheel includes a hub; and blades that extend outwardly from the hub, where each of the blades includes a shroud edge, a leading edge, a trailing edge, a pressure side, and a suction side, where the shroud edge includes a minimum axial coordinate position where the shroud edge meets the leading edge, and a maximum axial coordinate position where the shroud edge meets the trailing edge, and where, between the minimum axial coordinate position and the maximum axial coordinate position, each of the blades includes a first lean angle at a first axial coordinate position defined with respect to a first radial line, a second lean angle at a second axial coordinate position defined with respect to a second radial line, and a lean angle inflection region at an inflection axial coordinate position that is between the first axial coordinate position and the second axial coordinate position.

Abstract: A pressurized cooling fan and instructions for use, which is designed specifically to solve poor cooling effect due to poor effect of pressurizing of existing similar products and the technical issues of inconvenience of production, and high production cost. The fan frame of this cooling fan is provided with inner blades, a motor assembly is provided in the guard of inner blades. Airflow enters into the fan frame through the gap between outer blades and inner blades, and is guided out through the hollow hole in the rear of the fan frame, the top plane of inner blades is lower than the frame plane of the fan frame; outer blades and inner blades are integrally connected and relatively rotate when the motor assembly rotates, the air passes through the rear part of the fan frame that is guided by the gap between the fan frame, outer blades and inner blades.

Abstract: An impeller includes a disk formed in a disk shape about an axis, and a plurality of blades provided at intervals in a circumferential direction on one side in the axial direction of the disk. The blades define a flow path extending from one side in the axial direction toward a radial outer side and include a low-rigidity region and a high-rigidity region. The low-rigidity region has an inlet, an outlet of the extending region of the flow path, a relatively small plate thickness, and has a relatively small inclination angle with respect to the disk. The high-rigidity region adjacent to the low-rigidity region has a relatively large plate thickness, and a relatively large inclination angle with respect to the disk.

Abstract: Mistuned bladed rotors and associated manufacturing methods are disclosed. An exemplary method includes forming two or more blades of the bladed rotor where the two or more blades have substantially identical external aerodynamic surfaces and have different internal configurations causing the two or more blades to have different natural frequencies.

Abstract: The invention relates to a part of revolution (60) intended to be rotated, comprising a hub (62) intended to be tightly adjusted on a rotary shaft (24), and a body (14) extending radially outwards from an axial end of the hub. In order to increase the critical speed up to which the tightening can be retained, the hub (62) comprises three relatively thick annular regions (68, 66, 70) separated from one another by two relatively thin annular regions (64a, 64b), in such a way that when the part of revolution is subject to a centrifugal force (F), the two relatively thin annular regions (64a, 64b) form privileged deformation zones acting as a double pivot. Such a part can advantageously be used as a piston for balancing in a turbine test bench or in a turbomachine.

Abstract: Temperature conditioning unit (10) includes impeller (110), rotary drive source (200), fan case (120), housing (300), intake-side back-end chamber (311a), intake-side front-end chamber (311d), and isolation wall (311). Intake-side back-end chamber (311a) adjoins an object to be temperature-conditioned. Intake-side front-end chamber (311d) is where the air flows in from outside and flows out toward the intake-side back-end chamber. Isolation wall (311) separates intake-side back-end chamber (311a) from intake-side front-end chamber (311d).

Abstract: The invention discloses a non-fuel combusting air turbine assembly suitable as an auxiliary or primary power propulsion system for a vehicle. The systems include an air turbine engine powered by a compressor mechanism to increase the potential energy that is harnessed by the turbines, having a noise reducing air intake section for delivering air to the compressor. Additionally, the systems include a turbine mechanism composed of plural sets of stationary vanes and rotating vanes, preferably arranged alternatively, and a battery rechargeable by a generator operable by the rotating turbine vanes.

Abstract: An impeller includes a hub plate and a plurality of blades circumferentially disposed at intervals on one surface side of the hub plate. Each blade has a shape formed by piling up a plurality of blade sections in a blade height-wise direction of each blade in a reference impeller in which the hub plate intersects with the blades and which includes a linear element blade in the blade height-wise direction so as to form a curvilinear element blade. In piling up the blade sections, amounts of tangential lean and sweep to be applied to the blade sections are increased as it goes from an end face of at least one of a hub plate side end and a counter hub plate side end toward a span intermediate part of the blade.

Abstract: A powered apparatus for fluid applications includes a housing dimensioned and configured for mounting in a fluid conduit. The apparatus includes a generator for generating power. The apparatus also includes a power storage device for storing the generated power. The housing, generator and storage device comprise an integrated unit. The apparatus also includes a device connected to be powered by the generated power, for example, LED or OLED lighting. In certain embodiments, the apparatus can be mounted in a fluid conduit of a water feature. In another embodiment, the apparatus includes a microprocessor for controlling at least one of power storage, wireless communication, and monitoring of a parameter associated with the fluid. In another embodiment, the apparatus includes a controller and a power storage device and does not include a generator. The apparatus may further include a docking station for charging the power storage device.

Abstract: Provided is a rotary machine including: a shaft that rotates; a disc that has a substantially cylindrical hub fitted into the shaft and is provided so as to widen outward in a radial direction from a front end to a rear end of the hub; and an impeller having a plurality of blades provided on a surface of the disc. The hub has a tight fit section having an internal radius that is smaller than a radius of the shaft, and a loose fit section having an internal radius that is greater than the internal radius of the tight fit section. The loose fit section is provided on the front end side of the hub with respect to the tight fit section.

Abstract: Provided is a rotary machine including: a shaft that rotates; a disc that has a substantially cylindrical hub fitted into the shaft and is provided so as to widen outward in a radial direction from a front end to a rear end of the hub; and an impeller having a plurality of blades provided on a surface of the disc. The hub has a tight fit section having an internal radius that is smaller than a radius of the shaft, and a loose fit section having an internal radius that is greater than the internal radius of the tight fit section. The loose fit section is provided on the front end side of the hub with respect to the tight fit section.

Abstract: Provided is a rotary machine including: a shaft that rotates; a disc that has a substantially cylindrical hub fitted into the shaft and is provided so as to widen outward in a radial direction from a front end to a rear end of the hub; and an impeller having a plurality of blades provided on a surface of the disc. The hub has a tight fit section having an internal radius that is smaller than a radius of the shaft, and a loose fit section having an internal radius that is greater than the internal radius of the tight fit section. The loose fit section is provided on the front end side of the hub with respect to the tight fit section.

Abstract: An impeller includes a top shroud, a bottom shroud, and a plurality of vanes extending from the top shroud to the bottom shroud. The top and bottom shrouds are generally planar, and a lower edge of each vane tapers from an outer edge of the bottom shroud to a transverse tip edge thereof.

Abstract: An impeller for a turbo-machine and is provided. The impeller includes a metallic base having a central hole, a back surface and a front surface opposite to the back surface; at least one blade extending on the front surface of the metallic base; a composite shroud attached to the at least one blade such that plural closed paths or vanes are formed by the front surface of the metallic base, the at least one blade and the composite shroud; and a connector configured to attach the composite shroud to the metallic base or the at least one blade.

Abstract: A liquid ring pump is provided. The liquid ring pump is designed to reduce the overall envelop of the ring pump. The liquid ring pump includes a housing and an impeller. The housing defines an impeller cavity. The impeller cavity has an inlet port and a discharge port. The impeller is positioned within the impeller cavity for rotation about a central rotational axis. The impeller includes a central hub defining a conical outer surface and a plurality of angularly spaced apart main vanes extending radially outward from the conical outer surface relative to the central rotational axis. The inlet and discharge ports may be located on a same side of the impeller housing.

Abstract: A system, in certain embodiments, includes an impeller having a plurality of impeller blades coupled to an impeller hub body, wherein each impeller blade is sculpted having a nonlinear profile extending from a hub intersect surface of the impeller blade to a shroud intersect surface of the impeller blade.

Abstract: A ring fan and shroud guide system which includes a rotating fan member with a conical outer ring and a cylindrical shroud member overlapping at least a portion of the outer ring. A plurality of guide vanes are provided in the shroud which minimize the tangential velocity component of the air flow entering the tip-gap region and provide improved air flow through the system. The guide vanes can have a curved configuration.

Abstract: An impeller comprising: a top shroud; a bottom shroud, a plurality of vanes extending from the top shroud to the bottom shroud, each said vane including a top edge at a radially inner portion of the vane in contact with the top shroud and a bottom edge at a radially outer portion of the vane in contact with the bottom shroud, such that a radially inner portion of the vane at the bottom edge of each vane is not in contact with or adjacent the bottom shroud and a radially outer portion of the vane at the top edge of each vane is not in contact with or adjacent the top shroud.

Abstract: An air boost device such as a turbocharger, wherein the compressor wheel thereof is re-designed to permit die inserts (20), which occupy the air passage and define the blades (4, 5) during a process of forming a wax pattern (21) of a compressor wheel, to be pulled without being impeded by the blades. This modified blade design enables the automated production of wax patterns (21) using simplified tooling. The compressor wheel improves low cycle fatigue, withstands high temperatures and temperature changes, and permits operation at high boost pressure ratio while, on the other hand, having low weight, low inertial drag, and high responsiveness.

Abstract: An impeller comprising: a top shroud; a bottom shroud, a plurality of vanes extending from the top shroud to the bottom shroud, each said vane including a top edge at a radially inner portion of the vane in contact with the top shroud and a bottom edge at a radially outer portion of the vane in contact with the bottom shroud, such that a radially inner portion of the vane at the bottom edge of each vane is not in contact with or adjacent the bottom shroud and a radially outer portion of the vane at the top edge of each vane is not in contact with or adjacent the top shroud.

Abstract: Provided is a method of manufacturing an impeller, the method including: providing a disc comprising a plurality of blades; casting a shroud to a first state in a mold; providing a mounting space in the mold; mounting the disc in the mounting space and casting the shroud to a second state with the mounted disc.

Abstract: A centrifugal compressor provided with an impeller which is configured to have a plurality of blades arranged at a predetermined interval in a circumferential direction of a hub rotating together with a rotation shaft, in which a blade angle on a shroud side of the blade distributes to have a minimum value at a position between a leading edge of the blade and a midpoint of a camber line on the shroud side, and a maximum value at a position between the midpoint of the camber line on the shroud side and a trailing edge of the blade, and a blade angle of the blade on a hub side distributes so as to have a maximum value at a position between a leading edge and a midpoint of a camber line on the hub side.

Abstract: This invention relates to a radial blade wheel comprising a first (1,1?) and a second (2,2?) end plate arranged at a mutual distance from each other, the first end plate having an opening (6) which allows inflow to the radial blade wheel, and blades (3) arranged between the first and the second end plate. To achieve optimal efficiency for the radial blade wheel, the radial blade wheel comprises an inner part with blades, in which curvature (R1) of the blades (3) is shaped to bring motion energy to the flowing particles while the radial blade wheel is rotating, and an outer part with blades, in which curvature (R2) of the blades (3) is shaped not to bring motion energy to the flowing particles while the radial blade wheel is rotating.

Abstract: To provide a centrifugal compressor having a high pressure ratio, which can achieve a large flow rate while suppressing a decrease in efficiency, the centrifugal compressor being adapted to compress and discharge a gas, which has been sucked in by rotation of an impeller (10) pivotally supported in a casing (11), mainly by centrifugal force, the inlet radius/outlet radius ratio (R1/R2) of the impeller (10) is set at 0.7?R1/R2?0.85, and the inclination angle (74 ) of a back board portion in a hub (10a) of the impeller (10) is set at 5°???15°.

Abstract: To provide a can manufacturing pump impeller in which a stress of a base portion of a blade is prevented from increasing while improving the strength of a joint portion of a hub and a boss. In order to reinforce a joint portion of a hub and a boss, a plate is jointed to the inside of an impeller. In order not to overlap a base portion of a blade and the plate with each other on the hub, an opening portion is provided in the plate around the base portion of the blade on the hub. As a shape of the opening portion, a semicircular shape, a semielliptical shape, a rectangular shape, or a trapezoidal shape can be selected. Further, as a plate shape, a flat plate structure, a shell structure, or a curved structure can be selected.

Abstract: A centrifugal impeller for a turbomachine is provided. The centrifugal impeller comprises a plurality of aerodynamic vanes, each of the aerodynamic vanes having internal walls on which is associated a fabric element.

Abstract: An exemplary blade (220) for a turbine wheel includes an exducer portion with a trailing edge and an inducer portion with a leading edge wherein the inducer portion has a positive local blade angle at the leading edge with respect to the intended direction of rotation of the turbine wheel. An exemplary turbine wheel (200) includes a plurality of such exemplary blades. Various other exemplary turbine-related technologies are also disclosed.

Abstract: A motor-fan unit includes an end plate assembly, a motor assembly supported by the end plate assembly, and a shaft rotated by the motor assembly and extending through the end plate assembly. The fan assembly further includes a discharge shell, a tapered stationary fan which has a concave underside, and a rotating fan secured to the rotatable shaft and disposed between the discharge shell and the stationary fan. The tapered stationary fan includes a fan side which is substantially parallel and aligned with the frusto-conical shape of the fan disc of the rotating fan. A tapered fan shell is supported by the discharge shell and held in place by the stationary fan. A fan shroud secures the stationary fan and the fan shell to the discharge shell to prevent damage to a rotating fan secured to the shaft and positioned between the fan shroud and the stationary fan.

Abstract: A motor-fan unit includes an end plate assembly, a motor assembly supported by the end plate assembly, and a shaft rotated by the motor assembly and extending through the end plate assembly. The fan assembly further includes a fan secured to the rotatable shaft which is supported by the end plate assembly. The fan includes a fan disc having a substantially frusto-conical shape, a fan ring having a substantially frusto-conical shape, and a plurality of vanes connecting the fan disc to the fan ring such that the frusto-conical shapes are substantially parallel to one another. A diffuser with a tapered fan side is also provided between the fan and the end plate assembly, wherein the tapered fan side is substantially parallel with the fan disc.

Abstract: A radial compressor rotor is provided for stabilizing the flow behavior of a delivery gas, consisting of a wheel disc and blades arranged uniformly in the circumferential direction, wherein the generatrix of the surface of the blades is designed as a curved line at least in a curved section, such that the surface is curved in two directions in this section.

Abstract: Provided is a turbine which handles fluids having a plurality of pressures with a single or integrated turbine wheel so that the number of components is reduced, and costs are reduced.

Abstract: An impeller, for example, a guide wheel for a hydrodynamic speed variator/torque converter, including a plurality of blades. Each blade has a blade base and a blade tip area. Stiffening means are situated in at least one of the blades in at least the blade base area and/or the blade tip area.

Abstract: A turbocharger system for an internal combustion engine includes at least one compressor wheel. The at least one compressor wheel of a single stage or multiple stage turbocharger system is formed, such as by pressure casting, from at least one of an aluminum metal matrix composite and an aluminum alloy containing up to 5 weight percent scandium.

Abstract: The invention relates to a pump for pumping contaminated liquid including solid matter, comprising a pump housing provided with a rotatable impeller (3) having at least one vane (9) and an impeller seat (4), the impeller seat (4) presenting at least one recess (13) in the top surface (11) thereof, a sheering/cutting action arising between an cutting edge (15) of said recess (13) and a lower edge (14) of the vane (9) as the impeller (3) rotates relative to the impeller seat (4). Furthermore, the pump also comprises means for guiding the solid matter towards said recess (13), the guiding means comprising at least one guide in and at least one projection (20), an upper surface (19) of the guide pin extending from a position contiguous to the most inner part of the vane (9) of the impeller (3) towards the impeller seat (4), and the projection (20) protruding from the impeller seat (4).

Abstract: A mixed flow fan wheel has a convex hub, an axially-spaced away concave annular shroud, and a plurality of angularly distributed blades extending between and interconnecting the hub and shroud, all which cooperatively define a plurality of inter-blade flow channels. Each has a pressure surface and spaced suction surface extending not only between spaced inlet and discharge edges but also, crosswise thereto, spaced hub-side and shroud-side edges. Each discharge edge is convex relative a center of geometry of the blade therefor. Each inter-blade flow channel originates in a generally rectangular shape between flanking inlet edges and terminates in another generally rectangular shape between flanking discharge edges, with a procession of gradations of generally rectangular shapes forming a progressive transition therebetween. Moreover, each inter-blade flow channel twists or corkscrews from inlet thereof to the discharge.

Abstract: A centrifugal multiblade fan according to the present invention sucks air from one end side of an axial direction of a rotation axis to a radial inside, and blows the air to a radial outside. The centrifugal multiblade fan includes a plurality of blades located around the rotation axis. Each blade has a leading edge positioned at the radial inside, and a trailing edge positioned at a radial outside. The leading edge of each blade has an edge shape with a radius of curvature of 0.2 mm or less, for example.

Abstract: An impeller of a centrifugal fan includes an end plate, a plurality of blades and an end ring. The blades include blade bodies that are annularly disposed around a shaft and fixed to the end plate. The blades further include blade covers that are attached to the blade bodies. The blade covers and the blade bodies form a hollow space. The end ring is disposed such that it sandwiches the plural blades between itself and the end plate in a shaft direction. The blade covers form at least part of negative-pressure surfaces.

Abstract: The present invention discloses a rotor of wind energy conversion system (WECS) with the Venturi-tube effect. All the blades mounted on the blade-mounting seat envelop together to form a revolving-body cage turbine, which can be divided from structure into a head portion at the windward end, a tail portion at the wind exhaust end, and an airstream compression portion between the head portion and the tail portion and constituted by the enveloping blades. The revolution diameter of the airstream compression portion is gradually substantially increased from the head portion to the tail portion. The cage turbine forms a dynamic Venturi tube during the revolving process, with which the blade revolves to constitute its outline tube wall with the air permeability. The airstream passes through a window between the blades, and the incoming wind does work towards the blade during the process of permeating from the external space to the internal space of this outline tube wall, thus realizing the energy transfer.

Abstract: In a turbine wheel of an exhaust gas turbine comprising a turbine wheel with a hub and a plurality of turbine wheel blades which are arranged on the turbine wheel hub and which extend axially between a turbine wheel inlet and a turbine wheel outlet, the turbine wheel blades are constructed in such a way that the ratio of the hub contour thickness to the external contour thickness of each turbine wheel blade follows a defined function.

Abstract: A Francis pump-turbine includes a runner provided with runner blades arranged around in a circumferential direction of a main shaft of the runner, each of the runner blades being supported by a band at a bottom side thereof in a blade height direction and supported by a crown at a head side in the blade height direction, in which the runner blade is formed, at a trailing edge thereof, with a curved portion expanding to the main shaft when the turbine is in operation, the curved portion has a maximum point with respect to a straight line connecting a crown-side trailing edge connecting end at which the trailing edge and the crown are connected and a band-side trailing edge connecting end at which the trailing edge and the band are connected, and an angle ? formed by a straight line connecting the maximum point and the crown-side trailing edge connecting end and a straight line connecting the maximum point and the band-side trailing edge connecting end is set to be within a range of ??150°.

Abstract: A low noise centrifugal fan impeller has a multi cellular form of construction comprising a multiplicity of individual radial flow channels disposed in a circumferential and longitudinal array with respect to the axis of rotation. This increases the “blade passing frequency” as compared to a conventional impeller and since higher frequencies have lower energy for a given flow output the total amplitude of the noise generated can be reduced. Each channel extends from a respective channel inlet to a respective channel outlet which is offset from the respective inlet in the longitudinal direction of the impeller, and involves an increase in the internal dimension of the respective channel in the direction parallel to the axis of rotation, thus assisting deceleration and compression of the air or other medium being conveyed as it flows through the channels.

Abstract: An impeller includes first and second impeller portions that are secured to one another. An interior cavity is formed between the first and second portions. The first impeller portion supports multiple blades. The first and second impeller portions respectively include first and second surfaces that are secured to one another near a tip of the impeller. Inlet and outlet apertures are provided in the impeller and are in communication with the inner cavity to provide a cooling flow path there through. A circumferential gap is arranged between the first and second impeller portions opposite the tip to permit relative axial movement between the first and second impeller portions during centrifugal loading of the impeller.

Abstract: On a suction surface side of a blade in an impeller, a convex portion is formed to assume a curved line from a front edge portion to a throat portion substantially in the middle in a radial direction, and this convex portion is formed to be flat assuming a curved line from the throat portion toward a rear edge portion, whereby this convex portion is formed in a position where a relative inlet velocity of fluid into the impeller is Mach number Ma?1.

Abstract: In a centrifugal fan the diameter of the impeller is rendered less than 20 mm, yet by rotating it under rotational conditions in which the centrifugal force along the impeller periphery is 10,000 m/s2 or more, the static pressure that the fan generates is heightened. At the same time, rendering the vane spacing a predetermined width or less reduces noise. Configuring in this way produces a small-scale, high-static-pressure, low-noise fan for cooling electronic devices. Furthermore, by mounting the centrifugal fan on a heatsink having densely arranged heat-dissipating projections a small-scale, high-cooling-capacity, quiet cooling device is realized.

Abstract: Exemplary turbine blade outer edges, exemplary vane inner edges, exemplary systems and exemplary methods are disclosed that help to reduce noise in variable geometry turbines and optionally other turbines wherein a turbine blade interacts with an object. Other exemplary turbine-related technologies are also disclosed.

Abstract: A compressor having a defined large diameter impeller having an integral shroud and having a three dimensional gas flow path defined by the impeller hub surface, blades and the shroud and having a large axially oriented inlet or inducer section with aggressive inducer blades, a defined outlet section geometry, and continuous blade geometries between the inlet and outlet sections.