Abstract: A stay ring of a hydraulic turbine has: a ring-shaped upper wall, a ring-shaped lower wall arranged below the upper wall forming a ring-shaped flow channel between the upper wall and the lower wall; and stay vanes arranged in array with spaces in a peripheral direction in the ring-shaped flow channel and rigidly secured to the upper and lower walls. The upper wall and the lower wall are inclined so as to reduce height of the ring-shaped flow channel toward outlet at least near inlet end thereof. The straightening bodies are arranged along inner surfaces of the upper wall and the lower wall at least near inlet end to reduce inclination of water flow in the stay ring.

Abstract: The invention relates to fan units for ventilators, in particular for CPAP-apparatus. The fan units comprise a housing, a motor having a stator and a rotor, with the stator being affixed to the housing, and an impeller affixed to the rotor. According to an embodiment the motor is positioned in the suction area of the impeller and the housing forms a suction channel extending helically about the motor axis and being arranged such that the sucked air is accelerated in the direction of rotation of the motor. According to another embodiment the housing in the proximity of the fixtures of the motor is formed such that the housing acts as spring element itself. According to another embodiment a tissue is provided in the fan unit through which the air flows after its compression by the impeller.

Abstract: An exhaust turbocharger with a housing, a compressor arranged in a compressor space and an exhaust turbine is arranged in a turbine space, whereby an exhaust line from the turbine outlet is connected to a low-pressure side of the compressor space via an exhaust recirculation line which extends through the housing and is designed largely in a spiral form in the housing. The recirculated exhaust gas flow arrangements improve the dynamics by providing higher turbocharger rotational speeds in the partial load range due to the production of a pre-twist by the exhaust recirculation stream.

Abstract: A spiral for a turbomachine including reinforcing sheets which are partially located in the transition region between the spiral and parallel plate.

Abstract: A hose connector for hose of a dust collector is disclosed. The hose connector has a housing containing a blower, a blade module, a hose and the hose connector includes a covering plate, wherein the center of the covering plate of the hose connector is provided with a through hole and the lower edge next to the hose connector is protruded out an urging edge which can resist against the circumferential edge of the covering plate, and the lower edge of the hose connector is protruded out an engaging block which can engage to the lower inner edge of the through hole of the covering plate, and on the hose connector adjacent to the engaging block, a stopping pad is disposed such that when the stopping pad is at the covering plate of the hose seat the length of the stopping pad facing downward is beyond the top end of the blade module and a curved gap is formed between the stopping pad and the blade module.

Abstract: A centrifugal blower with forward curved fan blades includes an inlet shroud whose shape is specifically designed for creating a smooth incoming airflow pattern that leads into the inner leading edges of the fan blades. The inlet shroud has first and second curved surfaces, wherein the centers of curvature of the two surfaces lie in the same plane, and the center of curvature as well as the radius of curvature of one curved surface is greater than that of the other. At least one center of curvature lies beyond the outer diameter of the impeller, and at least one center of curvature lies beyond the impeller's inner diameter, wherein the impeller's inner diameter is defined by the inner leading edges of the fan blades. Performance benefits are achieved when a forward curved blower with such an inlet shroud operates with a flow coefficient of between 9 and 52.

Abstract: A method and apparatus for lowering NOx in diesel engine exhaust gases while maintaining thermal efficiency, by retarding the start of fuel injection, increasing the compression ratio, and reducing the turbocharger inlet flow area to increase turbocharger speed and inlet manifold boost levels for the engine intake air.

Abstract: In an exhaust gas turbocharger of an internal combustion engine including a compressor arranged in the intake duct and a turbine arranged in the exhaust duct of the engine, wherein the turbine includes in its housing an exhaust collection chamber from which the exhaust gas is directed via turbine inlet passage to the turbine wheel, the housing also includes a bypass arrangement for conducting part of the exhaust gas to the turbine exhaust structure in a turbine wheel bypass line which includes an ejector structure forming a gas pumping device.

Abstract: A system that enables enhanced air flow to the air intake of an internal combustion engine having a turbocharger is disclosed. The air induction system includes a plenum or expansion chamber located within the area directly in front of the inlet of the turbocharger. Alternatively, the air induction system may include a diffuser and/or an expansion chamber for reducing the velocity of the air flow within the clean air duct in an area directly in front of the inlet of the turbocharger.

Abstract: A spiral casing for a turbine of a turbocharger is made from thin (0,2 to 2 mm thick) sheet metal. The spiral casing can be made from two matching parts and can be insulated.

Abstract: There is provided a turbocharger whose constitution is compact, in which exhaust interference seldom occurs, and which can be applied also to an EGR type engine. In the turbocharger, an introduction part of an exhaust inflow passage possesses a partition part dividing a range from an inlet to a predetermined position in a downstream of the inlet into two exhaust inflow passages, a throttle part, whose sectional area becomes gradually small, from the inlet to a position where the partition part ceases, a joining part where exhaust gases passing through the left and right exhaust inflow passages are joined, and a diffuser part, whose sectional area becomes gradually large, from the joining part to a tongue part.

Abstract: The exhaust-gas turbine comprises a turbine wheel arranged on a shaft, a bearing casing for the bearing arrangement of the rotatable shaft, a gas-inlet casing supported on the bearing casing and concentrically surrounding the bearing casing in the supporting region, and a centering ring for centering the gas-inlet casing relative to the shaft mounted in the bearing casing. The centering ring and either the bearing casing or the gas-inlet casing comprise grooves and either radially or axially unidirectional centering lugs for engaging in the grooves. Due to the radially or axially unidirectional centering lugs with corresponding grooves, at least one of the connections between the bearing casing and the centering ring and the centering ring and the gas-inlet casing is not positive-locking, as a result of which any desired positioning of the gas-inlet casing relative to the bearing casing is made possible.

Abstract: A conical helical design for a turbine combustor scroll utilizes as much cavity of the combustor housing as possible by adding an axial shift and an irregular cross sectional shape in the scroll without adversely effecting aerodynamic performance. The axial shift region of the combustor scroll extends the cross-sectional area centroid of the scroll beyond the scroll's discharge area B-width. The resulting scroll design allows for the use of a high performance engine with a larger combustor while reducing the weight of the system by making the combustor housing as small as possible. Furthermore, the scroll design increases the air velocity for convection cooling by reducing the gap between the scroll and the housing. The turbine scroll of the present invention is useful in engines for which high performance is required, such as certain high performance aircraft.

Abstract: A side-blown fan is formed by a case and a blade member. The case includes a side-outlet, an axial inlet and a protrusion. The protrusion extends from an edge of the axial inlet toward the center of the axial inlet. The blade member is embedded in the inside of the case. In the radial direction, a high air pressure region exists between the blade member and the case. The protrusion covers the high air pressure region and a part of the blade member.

Abstract: A turbine scroll retention ring may comprise a retainer ring, a plurality of ring fingers, and a plurality of ring joggles. The turbine scroll retention ring may surround and be attached to a radial nozzle. The ring joggles may allow for thermal growth variations between the radial nozzle and the turbine scroll retention ring. The radially outer end portions of the ring fingers may be in contact with a turbine scroll component (for example, an aft scroll ring), such that the turbine scroll retention ring may force contact between the turbine scroll component and the radial nozzle. The finger joggles of the ring fingers may allow for thermal growth variations between the radial nozzle and the turbine scroll component. The turbine scroll retention ring may provide constant axial loading to the aft scroll ring during all engine operating conditions.

Abstract: Apparatus for use with a slurry pump, including a stationary part which includes a processing chamber having an inner side wall and a central axis, an inlet and an outlet to and from the processing chamber and a rotatable part at least partially disposed within the processing chamber and including an outer wall which is spaced from the inner wall of the processing chamber.

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

Abstract: The invention concerns a casing aggregate for the turbine of an exhaust turbocharger. The invention is identified by the following characteristics: a spiral casing adapted for surround the running wheel of the turbine; a tongue-like wall part (tongue) in the inside of the spiral casing; an inlet connection; an outlet connection; a flange to connect to a bearing casing; wherein the casing aggregate is manufactured of thin-walled precision casting; wherein the casing aggregate is made of at least two parts, so that at least one separation joint is present; and the separation joint is arranged as follows: it runs in an axially perpendicular level; it runs along the apex line of the spiral casing; it extends over an arc of a circle of approximately 270 degrees; it lies outside of the area of the tongue.

Abstract: An exhaust gas turbocharger comprising: a twin scroll turbine housing; a turbine wheel positioned in the twin scroll housing; an exhaust gas inlet, operatively connected to port exhaust gas through each side of the twin scroll turbine housing and onto the turbine wheel; a bypass, operatively connected to the exhaust gas inlet to port exhaust gas around the twin scroll turbine housing to bypass the turbine wheel; and a valve, operatively positioned to control exhaust gas flow to each side of the twin scroll turbine housing and the bypass.

Abstract: A centrifugal pump having an adjustable clean-out assembly (60), the position of which determines the face clearance between a wear plate (72) and an impeller (20). The clean-out assembly includes an end cover (63) that threadedly mounts a plurality of adjustment assemblies. The adjustment assembly includes an adjuster (104) that defines a through bore for slidably receiving a retaining stud (66) that extends from the pump housing. Each adjuster includes an abutment surface (108) which engages a pump surface and which establishes the face clearance between the wear plate and the impeller. Each adjuster includes a hex-shaped head which is engageable by an associated locking member (120) secured to the end cover. Each locking member includes a locking collar (120a) having 18 teeth which allows the collar to engage the hex-shaped head of the adjuster in 18 different postions.

Abstract: In an exhaust gas turbocharger including a compressor wheel, the compressor wheel is cooled by at least one nozzle which is arranged in close axial proximity to the axis of rotation of the compressor wheel for spraying the backside of the compressor wheel near the center thereof with coolant whereby the coolant, utilizing the centrifugal forces of the rotating compressor wheel, is completely distributed over the entire wheel back surfaces.

Abstract: Contoured intakes and fan housing assemblies for floor care machines are disclosed. In one embodiment, a contoured intake includes a contoured duct having a passage therethrough. The passage has a cross-sectional area progression that smoothly varies between a first cross-sectional area and a second cross-sectional area. Turbulence within the intake passage may be reduced or inhibited, and noise generated by the airstream within the intake passage may be reduced. In another embodiment, the contoured duct may include a bellmouth substantially surrounding the first open end that may inhibit the separation of the airstream within the intake passage. In a further embodiment, an airflow propulsion device for a floor care machine may include a motor having a drive shaft, a fan operatively coupled to the drive shaft, and a fan housing disposed about the fan and having a transition passage proximate the radially-outward ends of the vanes of the fan.

Abstract: A turbomachinery apparatus. A turbine is provided with a retainer having a bore step element for turbine wheel retention, and with an aperture manifesting a tailored diameter less than the trim diameter of the turbine, thereby to permit customization of the turbine efficiency characteristic. Various configurations of turbine retainers, with tailored diameter apertures, are disclosed.

Abstract: A housing for a turbocharger forms a housing jacket (6, 7) which surrounds a rotor space (15) for receiving a turbine rotor (18). The housing jacket consists of sheet metal at least in part. A connection pipe (4′) provides for communication with an exhaust gas manifold (3, 4) of a combustion motor (20). To reduce heat losses, it is not only the housing jacket (6, 7, 22) which surrounds the rotor space (15) and consists of sheet metal, but at least the connection pipe (4′) for communication with the exhaust gas manifold (3, 4) is shaped of sheet metal and is in heat conductive connection with the sheet metal of the housing jacket (6, 7, 22).

Abstract: The improvements are made in the turbine scroll and the turbine blades. The scroll structure for the radial turbines is characterized by the foregoing scroll having a scroll width ratio between the width in the radial direction (&Dgr;R) and the width in the direction of the rotation (B) ranging from &Dgr;R/B=0.3 to 0.7. It is further characterized by the configuration in which the turbine blades have cut-away areas at the blade corners by a prescribed amount, which are provided on the inlet edge at the shroud side and hub side where the operating gas flows.

Abstract: The exhaust turbocharger includes an exhaust gas turbine and a turbine casing, in which is formed the volute inlet flow duct which starts with an inlet connection. An exhaust gas flow is carried to the exhaust gas turbine in this duct. The turbocharger also includes a flow straightener, which is arranged in the inlet connection and guides the exhaust gas flow in the volute direction of the inlet flow duct.

Abstract: A turbomachinery apparatus. A turbine is provided with a retainer having a bore step element for turbine wheel retention, and with an aperture manifesting a tailored diameter less than the trim diameter of the turbine, thereby to permit customization of the turbine efficiency characteristic. Various configurations of turbine retainers, with tailored diameter apertures, are disclosed.

Abstract: A turbocharger turbine housing of this invention comprises a generally circular-shaped body having an exhaust gas inlet flange at a radial housing end and an exhaust gas outlet at an axial end. The inlet flange is configured having openings to two volutes that are separated by a wall divider, thereby forming an X-shaped pattern. The inlet flange is additionally configured having rounded and uniform thickness walls. The volutes are configured having a nonuniform shape and size, and the wall divider is configured having a diminishing area between the volutes, moving through the housing away from the inlet flange. The volutes are configured having a nonuniform shape and size with respect to one another as well moving through the turbine housing. Configured in this manner, turbocharger turbine housings of this invention serve to minimize thermal stress effects caused from transient thermal loading, thereby minimizing and/or eliminating thermal stress relating damage such as cracking.

Abstract: In a motor-driven air pump, a bottom wall and a surrounding barrier wall cooperatively confine a receiving space in which an impeller is mounted. The barrier wall is provided with angularly displaced first and second internal ports that communicate fluidly with first and second chambers, respectively. A first external port is disposed upstream of and communicates with one of the first and second chambers. A second external port is disposed downstream of and communicates with the other one of the first and second chambers.

Abstract: The present invention relates to a fluid handling system including a collection trough and pump assembly. A centrifugal pump is mounted in the path of cutting fluid that needs to be pumped from a collection system and discharged. A wide and narrow inlet mouth lies very low on the factory floor enabling the centrifugal pump to be mounted right on the floor and not within the floor. An optional vacuum system provides suction within the centrifugal pump that aids in priming the pump at start up and in removing air from a pump chamber within the pump, thus allowing more efficient pumping to take place. An impeller rotates within the pump creating a vortex within the pump chamber which facilitates movement of dirty cutting fluid including metal particles to be pumped through to a discharge outlet.

Abstract: An coolant pump for an internal-combustion engine including a housing, a cover sealingly coupled to the housing, an impeller assembly located between the housing and the cover, the impeller assembly defining a longitudinal axis and being rotatable about the longitudinal axis; and a flange positioned between the housing and the cover adjacent the impeller assembly such that the flange and the cover define a first cavity, the flange and the housing define a second cavity, and the flange includes an opening fluidly connecting the first and second cavities, the flange being contoured to at least partially surround the impeller assembly. Preferably, the pump also includes a nozzle contoured to direct a coolant from the first cavity toward the second cavity and onto the impeller assembly, and wherein the nozzle has an intake side communicating with the first cavity and a discharge side communicating with the second cavity.

Abstract: A radial blower, in particular, for a breathing apparatus, has a blower housing with a central, axial intake opening and a radial or approximately tangential outlet opening as well as a motor-driven radial blower wheel arranged axially between the intake opening and the outlet opening. The radial blower wheel has a cover disk at the axial side facing the outlet opening with such a large diameter that between the outer circumference of the cover disk and an inner circumferential surface of the housing a constricted annular flow gap for the medium flowing through the radial blower wheel in the direction toward the outlet opening is formed.

Abstract: A turbocharger turbine housing of this invention comprises a generally circular-shaped body having an exhaust gas inlet flange at a radial housing end and an exhaust gas outlet at an axial end. The inlet flange is configured having openings to two volutes that are separated by a wall divider, thereby forming an X-shaped pattern. The inlet flange is additionally configured having rounded and uniform thickness walls. The volutes are configured having a nonuniform shape and size, and the wall divider is configured having a diminishing area between the volutes, moving through the housing away from the inlet flange. The volutes are configured having a nonuniform shape and size with respect to one another as well moving through the turbine housing. Configured in this manner, turbocharger turbine housings of this invention serve to minimize thermal stress effects caused from transient thermal loading, thereby minimizing and/or eliminating thermal stress relating damage such as cracking.

Abstract: A swirl generator for creating bulk swirl in a compressor plenum in the opposite direction to the direction of rotation of the compressor rotor. The generator includes a continuous flow passageway formed by an inlet duct and a compressor forming an angle in the range of about 0°-180° to one another. A non-uniform velocity gradient is created by forming an area of non-uniform cross-sectional area within the flow passageway. The non-uniform area may comprise a ramp with a tapered end line, a rounded line of intersection, a fillet or by lengthening one side wall of the inlet duct relative to the opposite side wall. Preferably, the non-uniform cross sectional area uniformly tapers from ones sidewall of the flow passageway to the opposite sidewall.

Abstract: A top-flow fluid pump that is made from a high-purity fluroplastic material is disclosed. The pump is used to circulate extremely corrosive fluids that are heated to temperatures of 160-180° C. through at least one filtration unit. The pump can be used in a semiconductor etching system. The pump utilizes the driven side of an impeller to generate a suction force that draws the corrosive fluid into a pumping chamber from at least one inlet port. A pedestal support or shaft sleeve, through which a motor drive shaft extends, is modified to create an annular passageway that permits the corrosive fluid to enter the pumping chamber from the inlet. With the inlet design of the present invention, a drive motor seal assembly is no longer subjected to corrosive fluid because the seal assembly is positioned on the suction side of the impeller. In a “dead headed” condition, the corrosive fluid flow stops completely as the fluid within the pumping chamber simply remains in shear.

Abstract: A centrifugal supercharger includes a gear-type transmission for drivingly connecting the impeller to the engine. The transmission includes an impeller shaft supporting the impeller and being fixed relative to one of the gears of the transmission. The preferred impeller shaft and gear fixed thereto are integrally formed of cast iron so as to dampen propagation of sound waves to the impeller, thereby reducing the amplification of transmission noise by the impeller. Depending upon the desired horsepower gains provided by the supercharger, the impeller shaft preferably has a minimum shaft diameter.

Abstract: The torsion generator includes casing (1), in which at least one canal (2) is formed, whose inlet is located near to the casing (1) periphery. The longitudinal axis of the canal (2) passes on the logarithmical curve, wherein the mathematical sequence of the construction of the coordinates is different for each section of the curve. The outlet of the canal (2) communicates with the camera (3), formned inside the casing (1) and is connected with an outgoing pipeline (4). The inlet of the canal (2) is located tangentially, and the outlet—axially to the casing (1).

Abstract: In a centrifugal compressor, a housing is provided which has an annular treatment cavity in a shroud wall. The shroud wall has a first opening providing communication between an installed zone of an impeller and the treatment cavity, and a second opening providing communication between the treatment cavity and a zone upstream of the first opening so as to circulate air a during a low-flow-rate operation. Louvers are arranged in the second opening in circumferentially equidistantly spaced apart relationship with each other and inclined reversely to a rotative direction of the impeller so that the air a sucked to the treatment cavity is, when discharged through the second opening, subjected to directional flow guide action with a whirling direction reverse to the rotative direction of the impeller.

Abstract: An air pump assembly (10) is provided which has a through flow type air-driving device (12) supported on an apertured partition wall (18) with the air-driving device (12) at one side and the motor (50) at the opposite side. The wall (18) is sandwiched between opposed pump and motor housings (14and 16) providing complementary ducts (27and 28) which communicate with opposed end caps (25 and 26) mounted on the end walls (21 and 22) of the pump and motor housings (14 and 16). The pump housing end wall (21) is apertured for air flow into the air-driving device (12) from the end cap (25) and its side wall supports an air outlet connection (13). A circuitous inlet passage to the air-driving device (12) is formed through end cap (26), ducts (27 and 28) and end cap (25). A circuitous outlet passage is formed from the air-driving device (12) through the motor housing (16), apertured partition wall (18) and motor housing (16).

Abstract: In an exhaust gas turbocharger for an internal combustion engine including an exhaust gas turbine and a compressor connected to the turbine so as to be operated thereby, the turbine includes a housing consisting of an inner and an outer shell formed from steel sheets and being arranged in spaced relationship so as to form therebetween an intermediate space.

Abstract: An engine turbocharger includes a turbine inlet scroll for conducting exhaust gas from a laterally offset position to the annular inlet of a turbine wheel. An outer wall defines a generally S-shaped passage connecting an inlet flange with concentric annular outlet flanges aligned on laterally spaced parallel axes. An inner wall positioned near the outlet end of the turbine inlet duct defines an annular passage portion for distribution of exhaust gas to the turbine inlet. Three annularly spaced struts or vanes support the inner wall within the outer wall slightly upstream from the outlet flanges of the scroll. A straight vane is positioned on the central plane of the turbine inlet scroll to support the wall with the least possible interference with gas flow.

Abstract: An impeller for a supercharger is described. The impeller comprises a body having a base and an air intake end wherein the body is adapted to mount to a drive assembly of the supercharger. Further, the drive assembly is able to drive and rotate the body. Precision made air vanes are attached to the body wherein the precision made air vanes and the body are able to be positioned within a volute chamber housing creating precision sealing gaps.

Abstract: A turbo-compressor for an internal combustion engine includes a centripetal turbine driven by the engine exhaust gases, the turbine containing a housing designed to receive a free-rotating wheel, the housing possessing an exhaust gas inlet intended to be connected to the exhaust manifold of the engine and extending perpendicular to the axis of rotation of the wheel, an intake pipe extended by an incurved passage machined inside the housing opening on the periphery of the wheel, so as to direct the exhaust gases radially toward the center of the wheel, in order to rotate the latter, a second interior passage collecting the exhaust gases at the outlet of the wheel and a discharge pipe whose outlet is intended to be connected to the exhaust line of the engine, the second passage being incurved. The axis of the exhaust gas outlet extends perpendicular to the axis of rotation of the wheel.

Abstract: A suction port (2a) of the pump is submersed in an open-top cylindrical casing (3) coaxial to the impeller axis and equipped with a liquid inlet pipe (4) tangentially discharging the liquid into the casing in the direction of the impeller rotation. The lower portion of the cylindrical casing wall (3d) and/or the liquid inlet pipe (4) is designed in the form of a channel or pipe following a radius with center inside the casing, so that the swirling flow generated inside the casing (3), and the inlet flow that enhances said swirling flow, are concentrated and their liquid levels dynamically forced into a vertical level.

Abstract: A ceiling fan blade assembly which includes an annular hub structured for fixed securement to a fan motor for rotation therewith, and a pair of blade frames extending radially outwardly from opposite sides of the hub. The hub includes a base and a sidewall defining a cavity. Each blade frame is of a generally arcuate shape, and includes a flexible elongate tube that is connected to the hub by a joint. Each blade frame also includes a portion of a single continuous cord that extends from the hub cavity internally through the joint and elongate tube, and extends from the end of the elongate tube exteriorly back to the hub, where it enters the hub cavity through a pitch adjusting member connected to the hub. The single continuous cord extends throughout the assembly and between the blade frames such that the arcuate shape of both blade frames can be selectively varied in a substantially uniform manner by adjusting the tension in the cord.

Abstract: A scroll for directing hot gases into a radial flow turbine includes two annular confronting members which corporate to define a volume; the confronting members are curved in the same axial direction so that one member is inward of the other and support means are included to support the inward confronting member; the configuration ensures that the cross-sectional area of an annular outlet in the radially inner region of the scroll remains substantially constant during variation in scroll temperature.

Abstract: An improved air conditioning system is provided for an aircraft, particularly with respect to providing an enhanced supply of fresh air to the aircraft cabin or cockpit. The system includes a dual inlet turbine driven at least in part by pressurized bleed air from an aircraft engine, wherein the turbine expands and cools the air preparatory to supply thereof as conditioned air to the aircraft cabin. During relatively low altitude operation, the bleed air flow is supplemented by compressed fresh air discharged from a turbine-driven compressor and supplied to the dual inlet turbine. At relatively higher altitude operation, this fresh air flow is bypassed around the turbine for addition to the bleed air flow at a downstream side of the turbine, and the entire nozzle area of the turbine is opened to the bleed air flow.

Abstract: A new turbine comprising a combination-flow turbine wheel and a divided volute turbine casing, including a dividing wall that is canted away from the exhaust opening and adapted to direct the gases from both volute passages to flow through the turbine substantially axially with less flow losses than prior turbines.

Abstract: A turboexpander with improved efficiency wherein fluid is introduced into the rotatable assembly at a negative incidence angle and expanded within the rotatable assembly along a pressure balanced flow path.

Abstract: The invention is in a double chambered turbine housing and seal that includes separate exhaust gas inlet and exhaust chambers and a turbine chamber (11) and (12) combined in a single housing (10), and provides a ball segment (29) that is secured to an exhaust inlet line (28) for telescoping within an open collar end (13) of the inlet chamber, the exhaust inlet line interior wall and collar inner surface to align so as to minimize a production of turbulence in an exhaust gas flow therethrough, which inlet chamber (11) from the collar (13) maintains a constant cross-section through a dogleg bend to a throat (14) of a scroll volute (15), the inlet chamber walls angled uniformly through the dogleg bend to minimize a creation of turbulence in that flow.