Abstract: In a scroll structure of a centrifugal compressor, there are provided a radius increase arc portion E in which a radius from the center of a scroll 12 to a scroll centroid P of the cross section of the scroll 12 is gradually increased in any range in a circumferential direction from the start of winding of the scroll, and a radius decrease arc portion F in which the radius is gradually decreased toward a scroll end point Z.

Abstract: A housing has walls that define a volute passage and a diffuser passage fluidly connected to the volute passage. The volute passage has a first subsection and a second subsection, each having cross-sectional areas defined by tabular data. A centrifugal pump has a rotor and a housing, the housing having walls defining a volute passage and a diffuser passage fluidly connected to the volute passage. The volute passage has a first subsection and a second subsection, each having cross-sectional areas defined by tabular data.

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.

Abstract: A double-walled turbocharger housing made of sheet metal includes an inner sheet metal shell which conducts hot exhaust gases and a relatively cold outer sheet metal shell which is spaced apart from the inner sheet metal shell via an air gap. The double-walled turbocharger housing is connected to a bearing flange with a circumferential collar via a common welding seam. The bearing flange is provided with a collar on an outside which faces away from the hot exhaust gas. An outer end of the inner sheet metal shell is provided with a collar with which it embraces the outer sheet metal shell. Both sheet metal shells are connected with the collar of the bearing flange via a common welding seam, wherein an air gap is present between the inner sheet metal shell and the outer sheet metal shell up to the outer end of the inner sheet metal shell.

Abstract: A volute shaped pump casing for a centrifugal pump includes a chamber for housing at least one impeller rotatable around an axis of rotation and a volute shaped chamber which forms a flow channel and which contains a splitter rib for dividing the flow channel formed wherein in a section perpendicular to the axis of rotation a mean camber line is positioned equidistantly between an inner and outer surface of the splitter rib, where the thickness of the splitter rib is varied along the mean camber line and for the mean camber line unwrapped to a straight line there is a maximum in the thickness, s, of the splitter rib, wherein said maximum is positioned at a distance L from the leading edge of the splitter rib, and wherein the distance L is in the range between 1.4 times the maximum thickness s and 6 times the maximum thickness s.

Abstract: Provided are a low-noise, high-performance multiblade centrifugal fan that suppresses interference between rotational flows generated within extension sections that are extended in a rotation-axis direction at upper and lower end surfaces of a scroll casing, and an air conditioner equipped with the same. In a multiblade centrifugal fan having an impeller disposed in a rotatable manner about a rotation shaft within a scroll casing having a flow path whose cross section gradually increases in a rotational direction, at least one of upper and lower end surfaces of the scroll casing serves as an inclined end surface that is extended in the extending direction of the rotation shaft such that an extended height thereof gradually increases in the rotational direction from a scroll start position, and a stepped section extending in the rotational direction is provided between the inclined end surface and an inner-peripheral side surface of an extension section.

Abstract: A closed impeller has a base cover, which has a base interior surface, and a second cover. A vane, which has an inlet distal end and an outlet distal end, is on the base interior surface. The vane has low and high pressure side surfaces wherein they have a low or high pressure midpoint, respectively. A hard coating is on the low and high pressure side surfaces. The hard coating has a minimum low and high pressure coating thickness at their respective midpoints. The minimum low, as well as high, pressure coating thickness ranging between about 0.085 and about 0.8 of either one of the maximum outlet coating thickness at the outlet distal end or the maximum inlet coating thickness at the inlet distal end, respectively.

Abstract: A compressor housing assembly can include a shell that includes a cylindrical wall portion including a fluid inlet opening at one end and a sloped mating surface at an opposing end and, extending radially outwardly from the cylindrical wall portion, a spiral wall portion that defines, in part, a volute; and an insert that includes a cylindrical wall portion including a fluid inlet opening at one end and a shroud surface at an opposing end and, extending radially outwardly from the cylindrical wall portion, an annular ring portion including a sloped mating surface and, extending from the shroud surface, a diffuser surface, where, in an assembled state, the sloped mating surface of the insert and the sloped mating surface of the shell form a sloped interface between the insert and the shell. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.

Abstract: Provided is an air blower for an air conditioner. The air blower for the air conditioner includes a centrifugal fan and a fan housing. The fan housing covers the centrifugal fan, and forms a scroll-type flow path having a varying cross-sectional area and guiding air forcibly blown by the centrifugal fan to an outlet. Here, a bottom surface of the scroll-type flow path inclines and is thinnest near a region where the scroll-type flow path ends. The thickness of the bottom surface progressively increases along a straight line running from a region where the bottom surface is thinnest to an opposite outer side of the scroll-type flow path through a center of the centrifugal fan.

Abstract: A cooling pump receives fluid from a heating system and supplies cooled fluid to an engine. The cooling pump includes a body housing and a cover housing. The cover housing is attached to the body housing to define an internal pumping chamber. The internal pumping chamber is defined between an inlet passage and an outlet passage of the body housing. A chamber outlet opening is defined between the internal pumping chamber and the outlet passage such that fluid flows from the internal pumping chamber and into the outlet passage. The cover housing includes a sloped wall which extends into the outlet passage between the chamber outlet opening and a terminus. The sloped wall has a concave portion and a convex portion disposed such that the concave portion is between the chamber outlet opening and the convex portion to direct fluid through the outlet passage and into the engine.

Abstract: An assembly includes a cast cartridge component and a curved wall where the cast cartridge includes a base plate having an opening configured for receipt of a turbine wheel, an exhaust conduit having an inlet and an outlet, a cylindrical wall, and vanes disposed between the cylindrical wall and the base plate where adjacent vanes define throats; where the curved wall includes a proximal end and a distal end, and an upper edge and a lower edge; and where joinder of the proximal end and the outlet of the exhaust conduit, joinder of the upper edge and the cylindrical wall and joinder of the lower edge and the base plate forms a volute configured to direct exhaust received via the inlet to a turbine wheel via the throats. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.

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 housed in a casing configured by an upper casing and a lower casing, and that an air suctioned from a suction opening is discharged outward in a radial direction of the impeller by a centrifugal force due to a rotation of the impeller. The shroud has a curved surface formed from an outer edge portion toward a center thereof. The shroud has a plurality of protrusions which are formed on the surface of the shroud such that a gap is formed between each of the protrusion portions and the upper casing.

Abstract: A multiblade air blower has a multiblade impeller, an orifice, an axially overlaid portion, and an airflow collision prevention device. The multiblade impeller includes a main plate and a blade. The blade is provided at the main plate to form a blade inner periphery. The orifice has an open end and an orifice inner periphery. The open end is positioned toward the main plate from a blade end face. The orifice inner periphery has an inner diameter larger than that of the blade inner periphery, and guides air to the multiblade impeller. The axially overlaid portion is a part where the orifice and the blades are overlaid. The airflow collision prevention device is provided at the blade and at an inner side of the orifice inner periphery. The multiblade air blower suppresses loss of air distribution efficiency and increased noise.

Abstract: In a compressor for a supercharger of an internal combustion engine comprising a shroud, an impeller, a vaneless diffuser, and a scroll, a hub-side wall of the vaneless diffuser is formed to be inclined to the opposite side to a shroud-side wall with respect to a direction perpendicular to a rotational axis of the impeller in the longitudinal cross section including the rotational axis of the impeller. With such a configuration, the amount of deposit formed on the hub-side wall of the vaneless diffuser is reduced.

Abstract: In a multi-blade centrifugal fan in which an impeller is provided in a scroll casing in a freely rotatable manner, the scroll casing is provided with an axially expanded portion that forms an air channel at a bottom surface thereof which is expanded in a rotation-axis direction at a radially outer side of an annular flange portion which supports the impeller; and is provided, in a region of an outlet between a tongue portion and a spiral-end portion of the scroll casing in the axially expanded portion, with a protrusion that protrudes radially outward from a radially inner side surface by a predetermined amount so as to directly face an airflow in a circumferential direction.

Abstract: A turbocharger for an engine includes a compressor impeller, a turbine wheel, a turbine housing, a cover, and a flow passage switching valve. The impeller is for compression of intake air. The wheel drives the impeller. The housing includes first and second exhaust scrolls independently of each other, and a flow passage switching hole. The first and second exhaust scrolls swirl exhaust gas which is discharged from the engine and blow the swirled exhaust gas toward the wheel. The hole guides exhaust gas into the second exhaust scroll. The cover is provided separately from the housing. The valve opens or closes the hole, and includes a movable part having a rotatable shaft and a valving element. The movable part is attached to the cover. The cover is press-fitted to the housing, so that the valve is attached to the turbocharger.

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 engine blower includes: an engine; a fan that is rotated by the engine; a volute case that houses the fan therein and includes an air intake port; and a sponge cover with which an exterior of the air intake port of the volute case is covered.

Abstract: A single suction type centrifugal includes: a casing having a spiral shape; and an impeller housed in the casing and provided with a plurality of blades and an impeller main plate to which the blades are fixed. The casing includes a suction side plate having a suction port, and a motor fixing side plate to which a motor is fixed. A center portion of the impeller main plate is fixed to the motor, and a main plate opening is formed in the impeller main plate between the blades and a center portion of the impeller main plate. A plane which passes end portions of the blades on a motor fixing side plate side and is perpendicular to a rotary shaft of the motor is assumed as a blade end portion imaginary plane. A constriction portion is formed where a distance between the blade end portion imaginary plane and the motor fixing side plate is narrowed between the main plate opening and the blades.

Abstract: An object is to provide a turbine housing assembly in which reduction of weight, facilitation of manufacture, cost-cutting, and reduction of heat capacity are further promoted compared to a conventional turbine housing made of sheet metal. A turbine housing assembly includes a plurality of constituent members connected to one another to constitute a turbine housing into which a turbine wheel is inserted.

Abstract: A variable geometry turbocharger is simplified yet able to maintain pulse energy. In a first embodiment, a turbine housing is provided with a pivoting wall which pivots about a point near the entry to the turbine housing. By moving the wall about the pivot point, the effective volume of the turbine housing volute is varied, thus effectively reducing the volume of exhaust gas in the volute, allowing control of exhaust gas flowing to the turbine wheel. In the second embodiment of the invention, a rotating wedge segment within the volute is rotated from a first position to a second position, changing the effective volume of the volute and allowing control of exhaust gas flowing to the turbine wheel.

Abstract: A compressor for pressurizing a flow of air within an aircraft including an inlet providing the flow of air to the compressor. An outlet provides the flow of air, after pressurization by the compressor, to a chamber of the aircraft. A diffuser assembly is disposed between the inlet and the outlet. The diffuser assembly includes one or more vanes at least partially impeding the flow of air through the diffuser assembly. A backing plate is included having a surface adjacent to the one or more vanes. The surface includes a relief feature that enables air to bypass the one or more vanes. The relief feature has an axial depth of about 0.5% to 2.5% of a width of a flow path through the diffuser assembly or of about 0.5% to 5% of a thickness of a flange of the backing plate. A method of operating a compressor is also included.

Abstract: A water pump (30) includes an impeller chamber (32) formed in a housing (31), a swirl chamber (40) formed in the housing (31) to communicate with a coolant passage (8) and the impeller chamber (32), and an impeller (33) that is supported to be free to rotate in the impeller chamber (32) and rotates in conjunction with an engine (2) so as to take in a coolant and discharge the coolant into the coolant passage (8) via the swirl chamber (40). The swirl chamber (40) is formed to be divided into a first swirl chamber (41) that communicates with the coolant passage (8) at all times, and a second swirl chamber (42) and a third swirl chamber (43) respectively connected to the coolant passage (8) via thermostats (S1, S2) respectively having switch valves that can be opened and closed. The thermostats (S1, S2) are operated to open and close, thereby connecting and cutting off the swirl chambers (42, 43) and the coolant passage (8), in accordance with a temperature of the coolant.

Abstract: An impeller includes a disk-shaped hub and a plurality of vanes provided radially on the surface of the hub. The plurality of vanes are formed in a whirling pattern about the center of rotation of the impeller, and each of the vanes has an outer peripheral surface facing the inner peripheral surface of the volute. A rotational-direction rear end portion of the outer peripheral surface of each of the vanes has a recessed step surface formed thereon. The rotational-direction rear end of the recessed step surface of each of the vanes is formed to define an edge shape with respect to a rotational-direction rear end surface of the vane.

Abstract: A disclosed centrifugal boost pump volute includes normal to flow cross sectional surfaces distributed over the length of the passage. The volute includes a volute proper, an exit bend and a diffuser fluidly interconnecting the volute proper to the exit bend. The cross sectional surfaces are defined as dimensions set out in one set of data, which includes Tables N-1 and N-2 for the volute proper and Table N-3 for the volute exit bend, where N is the same value.

Abstract: There is provided a casing of a rotary machine which includes a diffuser part; a scroll part into which fluid emitted from the diffuser part flows; and a scroll tongue part including: a tongue portion; a bottom surface extending from a bottom surface of the diffuser part; and a flow opening provided between the tongue portion and the bottom surface, the fluid moving from the diffuser part to the scroll part through the flow opening, wherein the bottom surface of the scroll tongue part is coplanar with the bottom surface of the diffuser part.

Abstract: A casing of a centrifugal fan includes a suction port forming wall portion, an opposed wall portion opposed to the suction port forming wall portion, and a sidewall portion connecting the suction port forming wall portion and the opposed wall portion. A tongue portion is provided at the sidewall portion. The tongue portion projects into an air passage in the vicinity of a discharge port to form a narrowed air passage portion within the air passage. A leading end surface of the tongue portion is shaped such that the width of the leading end surface increases from the suction port forming wall portion, where the suction port is formed, to the opposed wall portion. The tongue portion is shaped such that the projecting length of the tongue portion into the air passage continuously decreases from the suction port forming wall portion to the opposed wall portion.

Abstract: A turbine housing (3) applied to a turbine (2) incorporated in a turbocharger (1) includes a main body (10) in which a wheel housing chamber (13) housing a turbine wheel (4) and an exhaust passage (15) are provided. The exhaust passage (15) has one end communicating with an outlet of the wheel housing chamber (13) and the other end providing an exhaust port (15a). The main body (10) is provided with an upstream-side inner pipe (20) and a downstream-side inner pipe (21) therein. The upstream-side inner pipe has a shroud portion (20) which is located in the wheel housing chamber (13) and extends along edges of turbine blades (5) of the turbine wheel (4). The downstream-side inner pipe (21) is arranged in the exhaust passage (15) so as to be located on a downstream side of the upstream-side inner pipe (20). A thickness (t2) of the downstream-side inner pipe (21) is thinner than a thickness (t1) of the upstream-side inner pipe (20).

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 turbo machine (1) comprises a casing (2) and a first volute tongue (12), an impeller (3) with at least one vane (4), and a flow splitter plate (5) comprising a second volute tongue (13) for splitting a flow of a fluidic medium produced by the impeller. The flow splitter plate comprises at least one opening (10) connecting the first surface (8) and the second, opposite surface (9) so as to reduce or eliminate vibrations.

Abstract: Embodiments of the invention provide a ventilation assembly including a scroll assembly that can include a blower assembly including a motor coupled to a blower wheel. Some embodiments include a discharge grid capable of being coupled to the scroll using a coupling pin or snap tabs. In some embodiments, the discharge grid includes a plurality of vertical and horizontal fins, and an outlet restriction. In some embodiments, at least one of the plurality of horizontal fins extends from the outlet restriction to couple with at least one vertical fin to form an aperture. In other embodiments, at least a portion of at least one of the plurality of vertical and horizontal fins includes a flared surface. Some embodiments include a scroll assembly that includes a scroll crescent. In some embodiments, a scroll including a discharge grid and scroll crescent can at least partially guide a fluid within the ventilation assembly.

Abstract: A fan for an engine ventilation system includes a housing defining an inlet and an outlet. A hydraulic motor is coupled to the fan housing and includes a motor housing, motor shaft, and shaft seal disposed between the motor housing and the motor shaft. An impeller assembly is disposed in the housing, as well as a stationary baffle that includes a baffle inner edge disposed axially between the impeller assembly and a second wall of the fan housing. A deflector disc is coupled to the impeller assembly and includes a deflector disc outer edge positioned axially rearward of the baffle inner edge. The deflector disc and baffle direct any hydraulic fluid leaking past the shaft seal away from the impeller assembly to a collection chamber.

Abstract: A pump housing has a spiral housing and includes a suction channel (14) which runs out in a space (15). The space (15) is for arranging an impeller (6), rotatable about a rotation axis (5), and includes a spirally peripheral channel (16) open to the space (15) and running out into a pressure channel. A receiver (20) for a differential pressure sensor is provided within the pump housing. A first sensor channel (22) is provided, which connects the receiver (20) to a pressure-side interior of the pump housing. A second sensor channel (23) connects the receiver (20) to the pressure-side interior of the pump housing. The receiver (20) for the differential pressure sensor is arranged between the spirally peripheral channel (16) and the suction channel (14), so that the channels can be formed by way of simple bores.

Abstract: A compressor housing (16) of a radial compressor, in particular of a turbocharger of an internal combustion engine, in particular of a motor vehicle, having at least one housing part (10, 12) is described. A compressor impeller receiving chamber (56) and a spiral channel (46) radially outwardly surrounding said compressor impeller receiving chamber with respect to a rotational axis (18) of a compressor impeller are provided. A separate contour ring (14) is disposed within the at least one housing part (10), which at least radially outwardly surrounds the spiral channel (46). The contour ring (14) forms at least one section (44) of the radially outward inner contour of the spiral channel (46).

Abstract: A sirocco fan includes: an impeller in which a plurality of first blades are formed on one of left and right faces of a main plate and a plurality of second blades are formed on the other of the left and right faces of the main plate; and a scroll housing covering the impeller, wherein the scroll housing includes air suction holes formed on both of left and right plates and a rounded portion formed to be convex in the opposite direction of the impeller on a scroll unit connecting both of the left and right plates, and an interval from the main plate to the rounded portion in a direction perpendicular to a rotation central axis of the impeller is the largest. A rapid change in the direction of air flowing to the scroll unit from the impeller can be minimized, and collision of air with the scroll unit is lessened, reducing a flow loss and enhancing efficiency.

Abstract: Disclosed is a vacuum self-priming pump in which a main pumping chamber and a sub-pumping chamber divided from each other by a diaphragm are provided within a case, main impellers and a sub-impeller rotated by a motor are respectively installed within the main pump chamber and the sub-pumping chamber such that a space is formed between a pair of left and right main impellers, and connection pipes are respectively formed between suction pipes of the main pumping chamber and the sub-pumping chamber and between discharge pipes of the main pumping chamber and the sub-pumping chamber, so as to more rapidly suck fluid every pumping operation and to effectively pump the fluid without clogging even if the pumped fluid contains various sludge or solid matter.

Abstract: The invention relates to a line system for a water power plant, comprising the following features and components: a turbine having a turbine impeller and a turbine spiral housing, a pump having a pump impeller and a pump spiral housing, the two spiral housings being arranged to run in opposite directions to one another, a shaft on which the turbine impeller and the pumpkin impeller are arranged in a rotationally fixed manner, an electric machine that has a drive connection to the shaft or can connected thereto, the pressure lines of the two spiral housings opening in a common line pressure line, a turbine pressure line for introducing water out of the main pressure line into a pump turbine in turbine operation, a pump pressure line configured as a bend for introducing water out of the pump turbine into the main pressure line in pump operation or back through the turbine pressure line to the pump turbine in a hydraulic short circuit, and a branch part to which the main pressure line, the turbine pressure line

Abstract: An electric pump has a pump casing, a sealing plate, an impeller and a motor for driving the impeller. The pump casing has a main body. A recess is formed in the main body and with the sealing plate defines a pump chamber. A suction port is connected to the pump chamber by a suction channel and a suction passage formed in the main body. A discharge port is connected to the pump chamber by a discharge channel. The suction passage extends axially from the recess. The recess, suction passage, suction channel and discharge channel are all shaped in a manner allowing the pump casing can be molded as a monolithic structure in a single injection molding process.

Abstract: An air-handling unit including a housing with a discharge opening, and a fan disposed substantially within the housing. The fan includes a fan discharge that extends through the discharge opening thereby defining a gap between the fan discharge and the housing surrounding the discharge opening. A brush seal is coupled to one of the housing about the discharge opening and the fan discharge such that the brush seal extends across the gap forming a seal between the discharge opening and the fan discharge.

Abstract: A turbine housing includes a scroll passage provided with a housing tongue. A groove portion (a notch) is formed in a wall surface on the scroll passage side of the housing tongue. The groove portion is located at a position close to an edge portion on the flange side of the wall surface. The groove portion extends from a tip end side of the housing tongue in an extending direction of the scroll passage. In a cross section orthogonal to the extending direction of the scroll passage, a curvature radius of the deepest part of the groove portion is smaller than a minimum curvature radius of the wall surface of the housing tongue.

Abstract: The pump housing (2) includes a circumferential wall (3), a pump casing (20) and a shaft cover (40). The pump casing (20) is attached to the circumferential wall (3) by a plurality of connection elements. The pump casing (20) includes a central opening (27) to form an axial supply (14) of the pump housing (2) for material to be pumped. The circumferential wall (3) closes the pump housing (2) along its outer circumference. The pump (1) includes a plurality of connection elements (22) connecting the pump casing (20) to the circumferential wall (3). The connection elements (22) are positioned in groups along the circumference of the pump housing (2), wherein the groups are regularly distributed along the circumference of the pump housing (2).

Abstract: A volute (10) with two chambers for a gas turbine (50), including a circumferential conduit (11) in the form of a spiral, a first opening (12) oriented tangentially to the said circumferential conduit (11), toward the outside of the said circumferential conduit (11), and a second circumferential opening (13) located at the center of the said circumferential conduit (11). A wall (15) separates the said circumferential conduit (11) into two symmetrical chambers (18) (19), with a first fluid and a second fluid being able to circulate independently and in an isolated manner between the said first opening (12) and the said second opening (13). The said first opening (12) allows a linear flow of the two fluids between the said circumferential conduit (11) and a chamber exterior to the said circumferential conduit (11), while the said second opening (13) allows a radial flow of the said two fluids between the said circumferential conduit (11) and a chamber interior to the said circumferential conduit (11).

Abstract: A turbocharger 1 includes a compressor housing 2 and a bearing housing 3. The compressor housing 2 has a shroud surface 221 and a diffuser surface 222. The bearing housing 3 has an opposite surface 311 facing the diffuser surface 222. An adhesion preventing part 4 is provided on at least one of the diffuser surface 222 and the opposite surface 311. The turbocharger 1 is configured so that compressed air spouts out from the adhesion preventing part 4 to the diffuser passage 15 by an ejector effect caused when compressed air passes through the diffuser passage 15.

Abstract: The present invention relates to an exhaust-gas turbocharger (1) having a turbine housing (2) and having a manifold section (3) which is connected to the turbine housing (2), wherein the turbine housing (2) and the manifold section (3) are formed as a single-piece cast part.

Abstract: An object of the invention is to provide a scroll structure of a turbine housing of a twin scroll turbocharger of which flow-through abilities of two exhaust gas passages are equal to each other. A tongue (44), which partitions a scroll portion (26) into an outer peripheral portion (26a) and an inner peripheral portion (26b) in a longitudinal section parallel to a flow direction of an exhaust gas, is formed at the turbine housing (32), the tongue (44) includes a front-side tongue (46) and a rear-side tongue (48) that respectively close the two exhaust gas passages at the outer peripheral portion (26a) in a cross-section, and respective inner sides (46a, 48a) of the front-side tongue (46) and the rear-side tongue (48) and respective minimal outflow width portions (56a, 58a) of a front-side passage (22) and a rear-side passage (24) are formed substantially parallel to each other in the cross-section at a downstream end of the outer peripheral portion (26a).

Abstract: The disclosure relates to a blower assembly having a blower housing, an impeller adapted for rotation about an axis A-A disposed in blower housing, and an intake plenum cooperating with the interior first surface of the blower housing to define an air entrance passage for receiving an incoming air flow. The intake plenum includes means to split the incoming air flow into a plurality of air streams and direct the air streams to predetermined portions of the impeller susceptible to stall conditions as the impeller rotates about the axis A-A. The means to split the incoming air may include a splitter plate disposed in the air entrance passage or at least one port defined in a portion of the air intake plenum adjacent the impeller.

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 centrifugal compressor includes: a volute casing including a first casing and a second casing that are mutually coupled, the first casing including a volute chamber therein and the second casing including an impeller installation space therein; an impeller provided in the impeller installation space so as to be rotatable around a rotation axis; and a vaneless diffuser that has an inlet that communicates with an inside of the second casing and has an outlet that communicates with an inside of the first casing. The vaneless diffuser has a width having a non-axisymmetric distribution in the circumferential direction.

Abstract: In a connection assembly of a turbine housing to a bearing housing of an exhaust gas turbocharger and to an exhaust gas turbocharger, wherein the turbine housing and the bearing housing are centered relative to each other and connected to each other in the region of a connection joint including a sealing assembly with a heat shield disposed between the turbine housing and the bearing housing, at least one cutout is provided in the heat shield for accommodating a centering means by way of which the turbine housing and the bearing housing are directly centered relative to one another.

Abstract: A pump for pumping liquids containing entrained solids. The pump is comprised of a volute surrounding an impeller comprising vanes that are self-cleaning. The outer surfaces of the vanes are coplanar and define a first plane and have a leading edge. The volute is comprised of a planar mating surface defining a second plane parallel to the first plane of the rotary impeller. The planar mating surface is proximate to the outer surfaces of the vanes and is comprised of a plurality of channels extending radially from the inner perimeter to the outer perimeter thereof. Each channel includes a forward edge in the direction of impeller rotation. The channels are oriented such that when the impeller is rotated within the volute, for any vane, the leading edge of the vane traverses each channel progressively from the inner end of the channel to the outer end of the channel.