Abstract: A pump casing for a centrifugal pump, which comprises an inlet opening, a discharge outlet, and a transition surface extending between an inner peripheral surface of the main pumping chamber and an inner peripheral surface of the discharge outlet, the transition surface arranged for separating an in use exit flow of material in the discharge outlet from an in use recirculation flow of material in the main pumping chamber. The transition surface has a cutwater having a profiled section which comprises a protrusion which extends irregularly from an otherwise generally rounded arched or U-shaped transition surface and is configured such that, in use, the velocity and/or turbulence resulting from the in use flow of the material being pumped in the main pumping chamber is reduced.

Abstract: A centrifugal fan is provided. The centrifugal fan is configured such that an impeller having a plurality of blades along a circumferential direction and disposed between a disk-shaped main plate and an annular shroud is accommodated in a casing, and that air suctioned from a suction opening is discharged outward in a radial direction of the impeller. One end of each of the blades is supported by the main plate, and the other end of each of the blades is supported by the annular shroud. The annular shroud includes a curved surface formed from an outer circumferential edge toward a center thereof, and a cylindrical part connected to the curved surface at a center side. An upper end of the cylindrical part of the annular shroud passes through an opening of the casing and protrudes from the casing, and the upper end of the cylindrical part has a bell mouth shape.

Abstract: A radial turbocompressor having at least two compressor stages is provided. A motor is co-axially located on a shaft with radial impellers of the compressor stages, and the motor and the compressor stages are arranged in a common, vertically-split housing. The medium to be compressed enters the housing through an intake opening in the housing, flows past and/or through the motor, and then is compressed in the compressor stages. The medium leaves the housing through an discharge opening that is arranged co-axially with the shaft, thereby minimizing axial forces in the turbocompressor.

Abstract: In one exemplary embodiment of the present invention, a compressor housing for a forced induction system of an internal combustion engine is provided. The compressor housing includes a compressor inlet passage in fluid communication with a compressor volute configured to house a compressor wheel, the compressor inlet passage comprising a wall that is shared with the compressor volute. The compressor also includes a compressor outlet in fluid communication with the compressor volute, the compressor outlet being configured to direct a compressed gas to an intake manifold of the internal combustion engine.

Abstract: A centrifugal fan includes a fan frame, a stator assembly and an impeller. The fan frame has a base plate portion, a cover plate portion and a lateral wall portion. The cover plate portion has an air inlet, and the lateral wall portion has an air outlet. The impeller includes a rotating member, a plurality of blades and a connection ring. The rotating member is coupled with the stator assembly. Each blade has a windward edge and a lateral edge. The windward edge faces the air inlet, the lateral edge faces the lateral wall portion, and the connection ring is arranged on the windward edges of the blades. The windward edge has a first coupling edge, and the connection ring has a second coupling edge. A part of the windward edge between the first coupling edge and the lateral edge extends downwards in a curved manner, forming a truncating portion.

Abstract: A centrifugal compressor wheel for a turbocharger is disclosed. The wheel includes an axially extending hub having an inlet end, an outlet end, an arcuate outer surface and a shaft bore. The wheel also includes a blade array disposed on the outer surface of the hub, the blade array comprising a plurality of circumferentially-spaced, radially and axially extending, arcuate centrifugal impeller blades disposed thereon; the hub and the blade array comprising a non-woven, discontinuous-fiber-filled, polymer matrix composite material.

Abstract: A blower fan includes a housing arranged to accommodate an impeller, wherein an upper surface portion of the housing includes a motor fixing portion, a peripheral portion, and a plurality of ribs interconnecting the motor fixing portion and the peripheral portion, the upper surface portion including a plurality of air intake ports defined between the motor fixing portion, the peripheral portion and the plurality of ribs being arranged to oppose the impeller; and the peripheral portion includes a peripheral low portion arranged to surround or substantially surround outer peripheries of the air intake ports and positioned lower than upper surfaces of the plurality of ribs and a peripheral high portion provided with rib extension portions continuously extending from the plurality of ribs and positioned higher than an upper surface of the peripheral low portion.

Abstract: A fan shield for an air cycle machine includes a fan shield body in the general shape of a frustum of a cone having curved sides. The curved sides define a radius of curvature and a center point of curvature that corresponds to the radius of curvature. The center point of curvature is an axial distance from a large end of the fan shield body and a radial distance from the central axis such that a ratio of the radial distance to the axial distance is between 1.160 and 1.360. A bearing housing includes a body that defines a cylindrical portion and an annular flange at one end. The annular flange includes a first attachment opening, a second attachment opening and a third attachment opening that are non-uniformly circumferentially spaced around the flange.

Abstract: A bladeless pump for fluids, such as gases that may contain particulate matter, drivable by a motor, consisting of an assembly of rotors or discs stacked against each other. Each rotor/disc has a runner portion on an outer area separated from its center, and a central portion having two or more spokes, divided by openings. The spokes are typically thicker than the rest of the discs. When many discs are placed together and spun on a motor-driven axle, air may be drawn in adjacent the rotor assembly, to the inter-disc openings, and compressed as it enters the area A spiral-shape volute is provided adjacent the outer ?M of the disc assembly, receiving pressurized air and releasing it from a motor housing. Applicant's bladeless pump may include a base for receiving the rotor housing and the motor, which may include a housing to substantially enclose the motor and its housing.

Abstract: A method and apparatus for reducing a selected tonal noise generated by a fan operating in a non-uniform flow by locating at least one obstruction in the non-uniform flow such that the at least one obstruction generates a noise that is out of phase with the selected tonal noise. The noise generated by the at least one obstruction interferes with the selected tonal noise, thus reducing the selected tonal noise. It is also contemplated to use additional obstructions to reduce other tonal noises generated by the fan.

Abstract: A lanced and/or slit seamed housing and method of manufacture having a peripheral rolled and lanced or punched seam between a wrapper and the housing panels. The method of manufacture utilizes similar or dissimilar sheet materials in a variety of material thicknesses and with or without coatings applied prior to formation whereby a housing is formed quickly and safely. The rolling and lancing method manufactures a blower housing with an assured and positive sealed seam between the panels and wrapper of the housing. The lances or slits maintain the integrity of the seam and prevent slippage between the wrapper and panels.

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: A pump casing for a centrifugal pump, which comprises an inlet opening, a discharge outlet, and a transition surface extending between an inner peripheral surface of the main pumping chamber and an inner peripheral surface of the discharge outlet, the transition surface arranged for separating an in use exit flow of material in the discharge outlet from an in use recirculation flow of material in the main pumping chamber. The transition surface has a cutwater having a profiled section which comprises a protrusion which extends irregularly from an otherwise generally rounded arched or U-shaped transition surface and is configured such that, in use, the velocity and/or turbulence resulting from the in use flow of the material being pumped in the main pumping chamber is reduced.

Abstract: An electronic device assembly includes a fan module, a frame, and a bottom plate of an electronic device enclosure. The fan module includes a cover, a fan secured to the cover. The frame is secured to the bottom plate. The cover is secured to the frame. The frame, the cover, and the bottom plate define a receiving space receiving the fan.

Abstract: A water pump for a vehicle includes: a pump housing; a drive shaft; an impeller fixed on a first end portion of the drive shaft; a pulley including a first radial extension portion and a first axial extension portion; a seal ball bearing which is disposed between an inner circumference surface of the first axial extension portion and an outer circumference surface of a cylindrical portion, and which includes seal members; and a plate member disposed between an end portion of the seal ball bearing which is on an impeller side and a stepped portion, and arranged to cover an end surface of the seal ball bearing which is on the impeller side, the plate member having a thickness smaller than a thickness of the stepped portion, and including a separating portion which is separated from a portion rotating relative to the plate member.

Abstract: A blower includes an electric motor having a shaft, a housing having an inlet and outlet between which is defined a gas flow path, the outlet structured to direct gas exiting the blower in an axial first direction, a first impeller attached to the shaft and adapted to accelerate air tangentially and direct it radially outward, a stationary portion, and a shield. The stationary portion includes a first stator vane structure defining a plurality of stator vane leading edges and a stator vane outer radial edge. The first stator vane structure is arranged to direct gas flow along a curved path that directs flow at an inner end thereof in a radially inward direction. The shield has an outer edge extending radially beyond the outer radial edge of the first stator vane structure and is adapted to isolate the stator vane leading edges from an impeller blade pressure pulse.

Abstract: A fuel equalization system includes a filter box for accepting an air stream and a fuel stream, the air stream and the fuel stream mixing to form a mixed air/fuel stream. A blower is provided that has an inlet for accepting the mixed air/fuel stream from the filter box. An air deflection member is positioned in the path of the mixed air/fuel stream, between the filter box and the inlet, so as to reduce the turbulence of the mixed air/fuel stream.

Abstract: A cooling fan includes a frame and a fan body. A bottom end of the frame forms a pressed portion that borders an air inlet. The pressed portion increases the size of the air inlet allowing more air to flow to better cool an electronic device.

Abstract: A centrifugal compressor for a turbine engine, including a cover with an upstream end and a downstream end; a casing presenting an upstream edge and a downstream edge; and a bladed impeller mounted to rotate in the casing. The cover covers the blades of the impeller to define an outside surface of a gas-flow passage extending between the upstream and downstream edges of the casing, while being fastened to the upstream edge of the casing via its upstream end while its downstream end remains free. The cover further includes an abutment limiting axial movement of its downstream end relative to the downstream edge of the casing while the compressor is in operation.

Abstract: A compressor impeller including at least one blade connected to an impeller hub via a junction of curved shape, the blade extending along a defined chord between a leading edge and a trailing edge of the blade. The junction presents the shape of an ellipse that varies along the chord.

Abstract: A centrifugal fan according to a preferred embodiment of the present invention includes an impeller, a motor portion, and a housing. The housing includes an upper plate portion, a lower plate portion, and a side wall portion. The upper plate portion or the lower plate portion includes an air inlet. One of the upper and lower plate portions and the side wall portion together define a single housing component molded by casting. A portion of the one of the upper and lower plate portions which is along a boundary between the side wall portion and the one of the upper and lower plate portions defines an increased thickness portion arranged to have an axial thickness greater than that of a remaining portion of the one of the upper and lower plate portions.

Abstract: A compressor comprises an impeller wheel mounted within a housing defining an inlet and an outlet. The wheel has a plurality of vanes and is rotatable about an axis. The housing has an inner wall defining a surface located in close proximity to radially outer edges of the impeller vanes which sweep across said surface as the impeller wheel rotates about its axis. The inlet comprises inner and outer tubular walls extending away from the impeller wheel in an upstream direction and defining between them gas flow passage. A bleed passage between the gas flow passage and the impeller wheel is selectively opened and closed by movement of a sliding sleeve in a helical direction.

Abstract: A turbocharger compressor housing apparatus comprises a compressor housing and diffuser. These components are configured to provide an interference fit when assembled. An annular projection extends outwardly from one of such components toward the other of the components and engages the other of the components to form an annular joint. One of the compressor housing and diffuser comprises a recess positioned to collect debris generated during the interference fit to prevent the debris from reaching the annular joint. A second recess can be provided at the opposite side of the projection to accommodate deformation of the projection during assembly of the diffuser and compressor housing. The recesses can be annular and can, along with the projection, be included in the diffuser.

Abstract: Disclosed is an electric blower having a stator, a rotor, a bracket, a rotary fan, an air guide and a fan case. The air guide comprises a partition plate, a diffuser disposed around outer periphery of the rotary fan in the air guide, a partition-plate sloped portion and a guide vane. The fan case has a fan-facing portion, a fan case shoulder bent at the outermost part of the fan-facing portion, and a cylindrical portion extending cylindrically in an axial direction from the fan case shoulder. The fan case shoulder is so bent that it forms substantially a right angle.

Abstract: An exemplary centrifugal fan includes a housing and an impeller received in the housing. The housing defines an air inlet and an air outlet thereof. Airflow driven by the impeller flows out of the housing via the air outlet. The housing further defines an opening adjacent to one end of the air outlet. The ambient air out of the centrifugal fan enters the housing via the opening, and flows out of the housing via the air outlet.

Abstract: A centrifugal fan includes an impeller, and a lower casing provided below the impeller. The impeller includes an upper shroud having an upper portion formed with an inlet, a lower shroud, and a plurality of blades arranged along a circumference direction between the upper shroud and the lower shroud. The blades extend from an inner side area to an outer side area in a radial direction, and are only connected to the lower shroud with the inner side area such that at least an outer circumferential side portion of each blade faces an upper surface of the lower casing. A surface of the lower casing, which faces the impeller, configures a portion of a wall surface which guides the fluid introduced from the inlet. A surface of each blade at a side of a leading edge portion is formed with a discontinuous portion having a step shape.

Abstract: A centrifugal fan that includes an impeller having fan blades with notched tabs extending through slots in a pair of disc shaped base elements with the notches engaging the ends of the slots to secure the fan blades upon the impeller.

Abstract: An improved automotive pump assembly includes a volute pumping chamber configured to operably contain a rotatable impeller which, when driven, draws fluid into a fluid inlet and pumps the fluid to and through a fluid outlet. The volute chamber has an exterior sidewall with a constant internal first radius over a first sidewall portion and transitions to a second sidewall portion of increasing radius. The chamber's second sidewall portion defines a first end at a sidewall transition point tangent to the constant radius sidewall segment to define a second end which is tangent to the volute chamber's fluid outlet with a second radius that is greater than the first radius.

Abstract: A pump varies output flow. For all cross-sections, which are vertical to the axis of rotation between axial outer positions for the cross-sectional areas of flow at the periphery of the impeller, the inner wall of the pump housing forms approximately circular profiles. The approximately circular profiles are mainly concentric and have a continuously increasing radius from one toward the other one of the axial outer positions. A tongue, which truncates the outlet or diffuser of the pump from an annulus of the pump housing, does not contact the circular profiles between the axial outer positions.

Abstract: A centrifugal blower unit comprising an impeller disposed therein and a scroll casing covering the exterior, the scroll casing having an outlet port, a tongue-like portion, a scroll portion of a volute shape and side casing plates provided with inlet ports on both sides, featuring advantages of increasing a static pressure and reducing an input power and noise while also achieving compactness in size. The scroll portion is provided with tapered scroll walls formed in anti-tongue-side wall adjacent to the outlet port by having it bent along bent lines toward the impeller and at angles to a driving shaft of the impeller such that a cross sectional area of the scroll portion in a direction of the driving shaft becomes gradually smaller toward the side casing plates.

Abstract: A blower fan unit includes a housing, a fan, a support unit to support the housing rotatably, and a exhaust tube projecting from the outlet, the exhaust tube producing a reaction force by guiding the airflow toward an upstream side of movement of the peripheral surface synchronized with rotation of the housing, the reaction force rotating the housing toward a downstream side of the movement of the peripheral surface of the housing, a stopper being positioned on a movement path of the exhaust tube that moves with the rotation of the housing to stop the rotation of the housing by blocking movement of the exhaust tube, and a switch mechanism to switch blocking and restarting of the movement of the exhaust tube using the stopper.

Abstract: A pump device for applying a force opposing axial movement of a pump rotor shaft relative to a pump housing, the pump device having a first housing part, a second housing part axially moveable relative to the first housing part, and a biasing member coupled between the first housing part and the second housing part.

Abstract: A centrifugal fan includes a housing and a fan body. The housing includes an upper cover and a lower cover. The fan body is disposed in the housing and includes a hub and at least a blade. The hub is pivotally connected to the lower cover. The blade includes an air intake portion and an air exhaust portion. The air intake portion is connected to the peripheral edge of the hub. The air exhaust portion is connected to the air intake portion and is disposed between the upper cover and the lower cover. The width of the air exhaust portion is gradually reduced along a direction away from the air intake portion.

Abstract: The guide blades provided for the variable turbine geometry are adjustably arranged within a radial gap through which gases can flow on a moveable carrier ring, which is axially clamped against stops on or in the radial gap with a thrust spring device. According to the invention, the thrust spring device loads the carrier ring on the positions closely adjacent to the stops. The thrust spring device is designed open without sealing function and if applicable combined with a separate seal without thrust function.

Abstract: A centrifugal fan includes a casing having an upper casing and a lower casing, and an impeller disposed between the upper and lower casing. The impeller includes an upper shroud having an upper portion formed with an inlet, a lower shroud, and a plurality of blades arranged along a circumference direction between the upper shroud and the lower shroud. The lower shroud is provided only on a portion at a side of a rotation axis of the impeller such that at least an outer circumferential side portion of each blade faces an upper surface of the lower casing. A surface of the lower casing, which faces the impeller, configures a portion of a wall surface which guides the fluid introduced from the inlet. Each blade has a shape which becomes thinner as increasing a distance from the upper shroud in a direction parallel to the rotation axis.

Abstract: An impeller for a centrifugal fan includes a hub, impeller blades, and struts for supporting the blades in a circumferential array spaced apart from the hub. The number of struts can equal the number of blades, each strut extended from the hub to support two blades while each blade is supported by one strut nearer to its leading edge and another strut nearer to its trailing edge. Another arrangement features two struts per blade, with one of the struts coupled to the hub and a given blade, and the other strut coupled between the given blade and an adjacent blade. The struts are recessed inwardly from the leading and trailing edges to promote smoother air flow. The blades and struts are provided with aerodynamic thickness profiles to further improve air flow.

Abstract: Disclosed is a ceiling recessed ventilating fan with illuminating device, including a body, a blower disposed horizontally within the body and an illuminating device disposed inside the body. The illuminating device is disposed around an air inlet of the blower. The illuminating device is disposed within the body, and does not protrude from the surface of the ceiling.

Abstract: Methods, apparatus, and products are disclosed for improving the airflow exiting a blower that has one or more adjustable guide vanes that are affixed to the blower at one or more pivot points located in an outlet of the blower that include: determining a rotational speed of an impeller in the blower and adjusting a position of at least one of the adjustable guide vanes in dependence upon the rotational speed of the impeller.

Abstract: The present invention concerns an air delivery device with an impeller mounted rotationally about the axis of rotation, designed for essentially axial intake of air and essentially radial expulsion of air relative to the axis of rotation, and which is arranged in a housing that has at least one intake opening and at least one blowing opening.

Abstract: A blower assembly includes a centrifugal fan and a motor assembly. The centrifugal fan has a plurality of axially extending impeller blades, a first axial end, and an air inlet. The air inlet is at the first axial end of the centrifugal fan. The motor assembly comprises a stator, a rotor, and an air directing surface. The air directing surface is shaped and configured to direct air drawn into the air inlet radially outwardly toward the impeller blades. The air directing surface extends generally along the rotor axis from its first end to its second end. At least a surface region of the air directing surface generally circumscribes the rotor axis and diverges radially outwardly as such surface region of the air directing surface extends away from the first end toward the second end.

Abstract: A clothing dryer having a cover structure capable of increasing quantity of air generated from a cooling fan. The clothing dryer includes a first cover covering the cooling fan and a second cover connected to the first cover. A cutoff is provided at a connection area between the first cover and the second cover to branch a flow of air and is positioned below a rotational center of the cooling fan.

Abstract: An impeller radial pump includes a pump chamber with a central suction and with a pump chamber outlet, wherein an impeller is provided in the pump chamber. Radially outside of the impeller, a circular ring shaped and circumferential pump chamber ring section is provided as a part of the pump chamber, wherein the pump chamber ring section essentially has an extension along the axial direction of the pump from the impeller against the suction direction. The pump chamber ring section has a varying width and is configured to be narrower in a compression region in the circulation direction.

Abstract: A centrifugal pump includes a pump unit and a drive unit. The pump unit includes a volute and an impeller disposed in the volute. The drive unit includes a stator and a rotor having a shaft. The volute includes an inlet, an outlet and a chamber in communication with the inlet and outlet. The shaft of the rotor extends into the chamber of the volute and the impeller is attached to and driven by the shaft. The volute further includes a transition part connected between the outlet and the chamber and communicating the outlet with the chamber. The axis of the transition part is angled to the axis of the outlet. The transition part is configured to improve the effect of fluid turbulence to thereby reduce noise, especially in the air-water stage.

Abstract: To provide a thermal insulation structure for a structural member and a scroll structure which can be easily used even in integrally constructed structural members and which can ensure reliability and thermal insulation properties. Provided are securing portions (52 and 53) extending outward from an outer wall of the structural member; a press plate (55) attached to the securing portions (52 and 53), with a gap between the press plate and the outer wall; and a thermal insulation member (56) disposed between the outer wall and the press plate (55).

Abstract: The invention relates to a centrifugal pump (1) comprising a pump housing (2) which is provided with an axial inlet (6), an outlet (5) and a rotor (7) which is attached in the pump housing (2) such that it can rotate about an axial rotation axis A. The rotor (7) is provided with a central boss (9), a shaft shield (11) fastened to the boss (9), a suction shield (12) attached so as to be axially set apart from the shaft shield (11), which suction shield (12) has an axial supply (14) aligned with the axial inlet (6) of the pump housing (2), and a plurality of rotor blades (15) which are fastened between the shields (11, 12). The radial inner ends (18) of the rotor blades (15) are connected to the suction shield (12) by a substantial perpendicular connection.

Abstract: A portable air displacement system for introducing or removing air from a zone has a cylindrical fan housing with an exhaust aperture located on a housing side wall of a housing anterior end. The fan housing has a raised dome with a primary directional intake nozzle located on a raised dome posterior end. The raised dome has a plurality of secondary intake slots located around an arc on a dome anterior side, a dome first side and a dome second side. The system has a centrifugal fan located in the housing cavity connected to a power supply and a power switch. The system has a positioning platform with a first panel and a second panel pivotally attached to housing posterior end for clasping a planar object on either side.

Abstract: A multistage radial compressor (1) with at least two compressor stages for compressing a fluid has a compressor housing (16) in which a flow channel (2) is formed for the fluid to be compressed; an impeller (4) with a plurality of impeller vanes (5) which are arranged in the flow channel (2) and are rotatable with the impeller (4) around a driveshaft (A), and a 3D return blading (8) with a plurality of return vanes (9) which are fixed with respect to rotation relative to the compressor housing (16). The flow channel (2) has a curved deflecting channel (7) which is arranged in front of the return vanes (9) in the flow direction. A vane base (11) and/or, axially downstream thereof, a vane head (12) of the return vanes (9) of the 3D return blading (8) have/has a curvature, and/or the return vanes (9) have a first vane angle distribution (17) at the vane base (11) and a second vane angle distribution (18) differing from this at the vane head (12).

Abstract: A centrifugal fan with axial-flow wind includes a centrifugal fan wheel and a cover shell. The centrifugal fan wheel has a rotating core structure and a plurality of centrifugal vanes arranged around the rotating core structure; a circular wind guide surface is disposed on an internal side of the cover shell and around the rotating core structure and covered onto the centrifugal vanes, such that the circular wind guide surface can change a centrifugal airflow at the external periphery of the centrifugal vane into an axial-flow airflow.

Abstract: A divisible housing of a fluid machine for a transmission to be received in the divisible housing is provided. The transmission provided for receiving in the divisible housing includes a large wheel and at least two pinion shafts which are in engagement with the large wheel. The divisible housing includes a first housing element and a second housing element which is connected to the first housing element via a parting joint. The at least two pinion shafts may be received in the parting joint. The parting joint includes a parting joint step, the at least two pinion shafts being receivable in the parting joint on both sides of the parting joint step.

Abstract: A blower assembly including a blower housing having a side wall with a first portion extending from the initial cutoff through an angle of at least 45° or more, the first portion having a radius which is substantially constant or which increases at a relatively small rate. The side wall additionally includes a second portion, extending from the end of the first portion to the outlet, which forms a continuous curve with the first portion and has an increasing radius which is increasing at a larger rate and has a rate of increase that is also increasing with housing angle. The shape of the side wall allows a reduction in the overall size of the blower housing for a given size of impeller.