Abstract: An improvement in the inner tip support of variable inlet guide vanes in an axial flow compressor. Each of the guide vanes is rotatably mounted on a spindle at its radially outer end so that it can pivot between an open and a closed position. The improvement comprises a bushing disposed in the casing radially inward of each of said guide vanes, and a button on the end of each of said guide vanes contained within and forming clearances with the bushing walls, the button being eccentrically offset with respect to the guide vane spindle by a preselected amount and in a preselected direction to cause the button to provide restraining force on the vane inner ends when the vanes are in an open position.

Abstract: A steam turbine in which the number of shell penetrations is reduced to six, without the use of T or Y fittings, by controlling steam flow to large nozzle chambers with a single large valve, rather than two smaller size valves. Secondly, adjacent valves are oriented in opposite directions, with those valves controlling nozzle chambers in the upper casing of the turbine opening to provide downward flow. This arrangement achieves two benefits: first, it reduces the number of turns and the length of the "spaghetti" piping leading to the nozzle inlet snouts, providing a straighter and more direct route for steam flow; and secondly, the inversion of adjacent valves allows room for installation of individual servomotors for each valve, which in turn enables greater flexibility in valve actuation sequencing. The invention also provides an improved method of valve sequencing.

Abstract: A valving mechanism for a balloon inflator is presented. The valving mechanism is attached to an inflator comprising a fan driven by a through-flow motor. A piston, received within a cylinder, has two bores passing therethrough, the first bore communicating with atmosphere, and the second bore communicating with a nozzle adapted for receipt of a balloon neck. When the balloon is placed on the nozzle and the piston is urged against a spring, an airstream passes through the second bore to inflate the balloon. When the balloon is removed, a spring urges the piston to a position in which the airstream passes through the first bore to atmosphere reducing the load on the motor and allowing the motor to run cooler.

Abstract: An improved diffuser is provided for centrifugal compressors and the like. The diffuser has a movable wall to which is attached a plurality of ribbed vanes.

Abstract: A new and improved air motor operated rotary earth drilling tool for use with a source of high pressure, high volume compressed air has a circulation control housing, a motor housing, a reduction gear housing, and a bearing housing connected longitudinally in series. The circulation control housing is connected to high pressure, high volume, compressed air and has an outlet opening into the motor housing, and an exhaust opening for discharge of compressed air for flushing cuttings and debris from a bore hole which is controlled by longitudinal movement of an inlet tube. The motor housing has a motor chamber and a sliding vane rotor with a rotary shaft extending into the reduction gear housing. A planetary reduction gear receives the rotor shaft and has a low speed, high torque output shaft extending into the bearing housing. A passageway conducts compressed air around the planetary reduction gear for cooling.

Abstract: An improved diffuser includes a plurality of vanes and an exit type throttle. The vanes maybe high solidity vanes.

Abstract: A diffuser centrifugal compressor of a comprising a plurality of stator blades provided outside an impeller thereof, and which converts kinetic energy of fluid from the impeller into pressure energy by operation of the stator blade. The diffuser is provided with sub-blades near the inner ends of the stator blades, and intermediate blades near outer ends of and between the stator blades.

Abstract: The double delivery pump comprises an impeller with double direction of rotation contained in a body connected to an axial intake conduit and defining a cylindrical seat connected to two tangential rectilinear ducts leading into a distribution seat containing a distribution element. The distribution element can slide in the distribution seat and defines shutters which can cutoff one or the other of two delivery conduits connected to the opposite ends of the distribution seat.

Abstract: An inlet guide vane assembly for a pump or a compressor having rotary blades. The guide vanes pivot in a controlled manner so that a portion of the vanes can be inserted into or withdrawn from the inlet passageway of the pump or the compressor by pivoting the guide vanes about a pivot axis.

Abstract: A radial turbine of a variable area nozzle type which is suitable for use as the exhaust turbine of a turbocharger for an automotive internal combustion engine requiring a quick response and a wide operating range. This turbine comprises at least two groups of variable area nozzles which may be, for instance, defined by moveable vanes, and can be individually controlled for each group to vary their sizes. By opening the variable area nozzles of the first group while the variable area nozzles of the second group are kept closed, a sufficient supercharging effect can be obtained even when the fluid flow rate is small. By opening the variable area nozzles of both the groups, the resistance to the fluid flow can be reduced and the creation of excessive back pressure at the inlet to the turbine can be avoided even when the fluid flow rate is large. In this way, not only the operating range of the turbine can be expanded but also the control accuracy particularly in small nozzle opening condition can be improved.

Abstract: An improved diffuser is provided for centrifugal compressors and the like. In the improved diffuser, ribbed vanes are aligned with the log spiral core flow within the diffuser and are located radially inwardly of full vanes on a fixed or variable width diffuser.

Abstract: In a centrifugal machine for a refrigeration or air conditioning system and including a casing, an impeller, a variable width diffuser assembly leading from the impeller, and a plurality of vanes received through respective complementary-shaped openings in a movable wall member, there is provided a sealing means in the openings between the vanes and movable wall member for preventing leakage of fluid through the openings, thereby increasing the operating efficiency of the machine.

Abstract: An adjusting device of a compressor includes guide vanes (2) arranged in the form of a ring around a longitudinal axis (4), which vanes are in each case connected fixedly in terms of rotation to pivot pins (8) and are pivotally mounted in the housing (46). Two-armed cranks (10) are connected fixedly in terms of rotation to the pivot pins (8), cranks (10) neighboring each other in circumferential direction being linked to each other by means of coupling links (24, 26). With a lower overall volume and low use of materials, a jamming, in particular in view of thermal expansions and production tolerances, is to be avoided. For use with a radial-flow compressor, it is proposed to arrange the cranks (10) and the coupling links (24, 26) in an annular space (52) which neighbors the discharge port, into which space the pivot pins (8) parallel to the longitudinal axis (4) protrude with their free ends.

Abstract: A support arrangement for a unison ring in a system for varying the angles of attack of compressor vanes in an axial flow gas turbine engine compressor. The support arrangement includes a plurality of struts which provide radial support for the unison ring on the compressor case and a corresponding plurality of eccentric washers disposed between platforms on the struts and an overhanging flange on the unison ring. When the washers are rotated, the positions of the struts are adjusted radially and when the washers and struts are clamped to the unison ring, forces are reacted between the struts and the unison rings through the washers.

Abstract: A turbo-operation machine has a rotor disk (2) that rotates in a housing (1) and is surrounded by a disk diffusor. The radial length of the diffusor channel differs locally such that the static pressure at the circumference of the disk diffusor is as uniform as possible.

Abstract: Method and apparatus for automatically determining the set of optimal operating angles for the variable pitch blades of a Kaplan-type turbine which has movable gates and is controlled by a governor and an electronic 3D cam. The governor controls the gates so as to maintain the turbine at a predetermined setpoint power generation level, and on-cam values of particular operating parameters of the turbine are measured. When evaluation of the measured data indicates that the turbine is in a steady-state condition, the blades are moved through a series of incremental off-cam variations in pitch. Following each incremental pitch variation of the blades, the governor repositions the gates to return the turbine to the predetermined setpoint power generation level. The operation of the turbine is then monitored, and values of particular operating parameters are measured at the new gate-blade operating point once the turbine has returned to steady-state.

Abstract: A radial inflow turbine having an axial discharge divided into concentric passages. The inner concentric passage or passages may be selectively blocked by means of a valve to accommodate a first range of flow rate. At higher flow rates, the valve is open to increase the effective nozzle area of the secondary nozzles at the discharge of the turbine wheel.

Abstract: A diffuser device disposed in a passageway between an air outlet of an impeller and a swirl chamber within a casing in a centrifugal compressor, is formed as divided into a diffuser disc capable of being fixed to a casing and a plurality of blades adapted to be arranged along the circumferential direction of the diffuser disc, and the respective diffuser blades have their one ends fitted in fitting bores drilled in the diffuser disc as arrayed along the circumferential direction as many as the diffuser blades so as to be freely rotatable about the axes of the fitting bores, whereby a blade angle is made variable. Also, a method for assembing such a diffuser device in a desired adjusted condition and a ganged drive mechanism for the diffuser blades for bringing the blade angles of the plurality of diffuser blades simultaneously into a desired adjusted condition are disclosed.

Abstract: An inlet guide vane assembly for a pump or a compressor having rotary blades. The guide vanes are pivotably disposed so that a portion of the vanes can be inserted into or withdrawn from the inlet passageway of the pump or the compressor by pivoting the guide vanes about a pivot axes. A control is provided for controlling the degree of pivot.

Abstract: A variable geometry centrifugal compressor diffuser or radial inflow turbine nozzle comprises a plurality of fixed radially extending pressure surface vane segments disposed in a circumferentially spaced array and a plurality of radially movable vane segments abutting said fixed segments for varying the geometry of said diffuser or nozzle.

Abstract: A compressor or a turbine of the radial type of construction as is used, for example, for exhaust gas turbocharging of an internal combustion engine. Adjustable guide wheels are coordinated to a radial turbine or compressor rotor in a radially traversed annular space of the fluid flow housing, whose guide blades are constructed in each case in one piece with the bearing pins and the actuating levers projecting at an angle from the bearing pins. For facilitating assembly of such guide blades in bearing apertures of a housing wall of the fluid flow housing, the housing wall is divided along the center of the bearing bores. As a result thereof, the bearing bores are radially accessible for the insertion of the bearing pins. With this construction of housing and guide wheel, the assembly expenditure is considerably smaller than with multipartite construction of the blades. At the same time, the operating reliability of the fluid flow machine is increased with the few detachable connections.

Abstract: A portable engine-pump assembly for use in firefighting applications is constructed of a high-speed, lightweight engine and a double-suction pump. The engine is arranged with a vertical crankshaft for driving the pump which is mounted adjacent thereto with a vertical pump shaft coupled to the crankshaft. The assembly is designed to provide high lift, high efficiency and a steady high flow volume and to be compact and light in weight.

Abstract: The invention relates to a water pump for a window washer unit of a vehicle. The pump has a reversible motor, one inlet port and two outlet ports and is arranged to deliver water selectively to either one of the two outlet ports in dependence upon the direction of rotation of the motor.

Abstract: A movable spike, variable entrance geometry annular pipe-type diffuser has, for prevention and suppression of flow-induced vibrations, a gear assembly for imparting rotational motion about the axis of a rod member supporting the spike in the diffuser channel, and damper guides fixed to the spike and cooperating with guide slots in the diffuser housing for opposing the rotational motion to create a biasing torque between the spike and housing to increase rigidity and damping.

Abstract: A variable vane assembly is disclosed which entails a vane arm which integrally engages with a vane stem without the use of threaded fasteners. The vane stem has a tip with parallel slots on opposite sides which are spaced below the end of the tip. At the end of the tip is an end slot which is perpendicular to the parallel slots. The tip of the vane stem has a ramped side parallel with the end slot. The vane arm is a flat wide metal strip that serves as the vane blade and integrally connects with the vane stem using two ears, which are turned inwards to engage with the parallel slots in the wave stem. Additionally, a central leaf exists between the two ears which turns downwards to fit in the end slot in the tip of the vane stem. The central leaf thereby acts as an axial retainer and allows the vane arm to be rotated with the rotation of the vane stem.

Abstract: The present invention discloses a device for varying the fluid passage area between adjacent turbine stator vanes. Upstream and downstream baffles are pivotally attached to the turbine casing, such that their distal ends may be extended into and retracted from the fluid passage area, so as to vary the cross section of the throat between adjacent vanes. A control system interconnects all of the baffles so as to synchronize and positively control their movements. The invention finds particular use in an aircraft turbojet engine.

Abstract: This invention relates to river control structures, of the kind known as upstream tilting gates. A structure in accordance with the invention includes a chamber, (1, 2, 3 and 4) and a tilting platform (5). The upstream end of the platform includes a curved transverse wall (10), consisting of a plurality of leaves (12 and 13). When the platform is raised, the leaves provide a continuous wall between the platform and the top of the chamber, while when the platform is lowered, the leaves slide behind each other and are accommodated in the chamber. The structure also includes a channel (7, 8 and 9), extending along the length of the platform. The channel is provided with baffles to limit the flow of water down the channel, to enable fish to surmount the structure.

Abstract: According to the present invention, there is provided an actuating lever for effecting concurrent vane rotation in tandem rows of variable stator vanes in a gas turbine engine. The actuating lever is interconnected between and operates to activate one vane in each of two axially adjacent vane rows with one free end of the lever being rotatably attached to an actuation ring and the other free end being secured to one of the vane spindles. The second vane spindle is attached at an intermediate position of the lever, and a flexible link section of the lever is provided between the two spindles to accommodate differential movements in the lever experienced during movement of the actuation ring.

Abstract: An improved pump for efficient operation at low flow rates to avoid undue power consumption and heating of the fluid being pumped. There is provided a centrifugal pump including a housing with an inlet. A radial or mixed flow discharge impeller is rotatably mounted within the housing and an outlet volute extends about the impeller. First and second axially spaced diffusion passages establish fluid communication between the impeller and the volute and a valve is provided for closing one of the passages when low flow rates are demanded of the pump to minimize recirculation, leakage and churning losses consuming the power and leading to heating of the fluid.

Abstract: According to the invention a baffle is provided in a dual inlet air conditioner blower wheel and is selectively movable within the blower wheel between the inlets to adjust the air delivery through the inlets while maintaining a substantially constant total volume delivery. The air mixture is adjustable is desired proportions between full volume indoor and full volume outdoor air and is presented to a blower wheel and centrifugally propelled into a space to be conditioned.

Abstract: In a water turbine two or more turbine stages are arranged one immediately behind the other in the axial direction. Each stage is constructed alike and includes a tubular housing portion with guide vanes laterally enclosing a tubular runner portion with runner vanes. In a particular water turbine, however, a different final stage may be used to avoid cavitation problems. In one arrangement, the guide vanes in each stage are pivotally mounted and can be controllably positioned from a single control location. The individual tubular housing portions and tubular runner portions are connected together at flanges located at the ends of each stage or section. The flanges are positioned within the tubular runner portions and on the exterior of the tubular housing portions. In some cases the tubular runner portions are held together axially by means of a central tie rod of tubular design.

Abstract: The valve, according to the illustrated embodiment, comprises an annular chamber formed of concentric inner and outer walls, the outer wall having, in the periphery thereof, a multiplicity of equally spaced apart rectangular slots. An annulus, having a corresponding multiplicity of slots, is rotatably journalled, concentrically, on the outer periphery of the outer wall in order that, upon rotation thereof, relative to the annular chamber, the slots in the wall, and those in the annulus, come into or out of registry. A crank mechanism is coupled between the annulus, and the structure defining the annular chamber, to selectively rotate the annulus through a limited arc to bring the slots into and out of such registry. The valve is used to throttle the velocity of compressed gas product conducted thereto by a gas compressor, and to subdivide compressed gas issuing therefrom into a multiplicity of fine jets.

Abstract: A blower unit, designed for use for example with air-conditioning plant, has an outer housing with a first aspiration or inlet connection forming part of an aspiration duct for a primary volume flow, and a second aspiration connection forming part of an aspiration duct for a secondary volume flow. The outer housing furthermore has outlet or pressure connections joined up with the primary and with the secondary circuits for the supply of air thereto. In the housing two blower impellers are placed and the outer part of the housing has an adjustable distributor unit which may be moved into different positions of adjustment so that the volume flows incoming at the outlet side of the blower impellers may be directed by different adjustments to the pressure (or outlet) connections as may be desired. The outer housing has two separate spaces in which the two blower impellers are placed which are fixed in an axial direction. Each such blower impeller has an air guiding housing.

Abstract: An improved vane for a rotary fluid compressor for which the rate of abrasive wear is matched to that of the mating rotor. The vane is made from a steel material consisting of 0.7-1.3 wt % of C, 13-20 wt % of Cr, and at least one of 0.3-1.5 wt % of Mo and 0.07-0.15 wt % of V, the balance being iron. Alternatively, the material may further contain not more than 1.0 wt % of Si and not more than 1.0 wt % of Mn. A vane so formed is ideal, in abrasion characteristics, for use with a Mo-Ni-Cr cast iron rotor.

Abstract: An aircraft propulsion means 20 comprises a multibladed, unshrouded, propeller fan 27 adapted in a cruise condition to operate at such high disc loadings that a substantial component of swirl is imparted to the slipstream in a given sense, and swirl reducing means (for example a multi-bladed stator 35) arranged with respect to the propeller fan to impart a considerable component of swirl in the opposite sense, whereby the total swirl imparted to the slipstream is nil or relatively low.

Abstract: An electric fan assembly comprises a generally cylindrical cross-flow fan, a rear guider, and a stabilizer. The rear guider has a downstream edge with respect to the direction of flow of an air current and is hingedly connected with a pivotable plate. By the utilization of the adherence effect of the air current to the pivotable plate, the direction of flow of the air current is controlled by pivoting the pivotable plate. In other words a slight pivotal movement of the pivotable plate is sufficient to bring about the deflection of the air current over a relatively large angle. The fan assembly may be employed in an air-conditioner in which case a relatively high air-conditioning efficiency can be obtained.

Abstract: A centrifugal vapor compressor and a method of assembling the same. The compressor comprises a housing defining an inlet passage and a diffuser passage, and an impeller blade rotatably mounted in the housing between the inlet and diffuser thereof. The compressor further comprises an annular recess defined by the housing and in communication with the diffuser passage, and an annular diffuser valve supported by the housing for axial movement within the annular recess and the diffuser passage between minimum and maximum throttling positions. A stop member is located adjacent to the housing and includes an end section axially located forward of the annular recess to limit forward axial movement of the diffuser valve. A fastening member is radially located external of the annular recess and disengagably secures the stop member to the housing.

Abstract: The exhaust pipe of a turbine accommodates in the inner portion (3) thereof a guide (8). The inner side surface of the guide (8) is essentially the surface of a body of revolution about an axis coincident with the axis (6) of the turbine. The guide (8) is disposed so that one of its ends (9) adjoins the outer ends (10) of the blades (4) of the runner (5) of the turbine. In accordance with the invention, the guide (8) is adapted to vary the area of the flow cross-section of the inlet portion (3) of the exhaust pipe.

Abstract: An exhaust pipe (A) of a turbine has a housing (1). The walls of the housing (1) define a flow duct (2) accommodating therein a baffle (5) whose housing baffle (5) has a side surface (6) which is the surface of a body of revolution about an axis coinciding with the axis (7) of the turbine. The surface (6) has an inlet portion (8) having to a radius shorter than the outer radius R of the blades (3) of the runner (4) of the turbine.Mounted within the flow duct (2) are guides (10) supporting the baffle (5) which is adjustable along the guides (10) relative to the housing (1) of the exhaust pipe (A) axially and/or transversely of the axis (7) of the turbine.

Abstract: A series of airfoil cross-section equidistantly spaced normally parallel vanes are disposed linearly across the mouth of an induction housing port which lies on an essentially flat plane non-intersecting with the axis of rotation of a turbo compressor wheel. A control mechanism moves the vanes upon the compressor tending to surge so that each of the vanes is moved through an angle different from the preceeding one, whereby the air flows passing between the vanes are deflected and converge upstream of the compressor wheel and swirl theretoward in the form of a single flow to impinge on the blades of the wheel with a uniform and reduced angle of incidence.

Abstract: A dual turbine turbocharger for an engine comprising a first turbine wheel and a second turbine wheel mounted on a common shaft in a dual scroll turbine housing for receiving exhaust gases. The twin turbines are isolated from each other by a partition separating the dual scrolls of the turbine housing. The scrolls begin as separate inlet ports for connection to isolated exhaust gas discharge systems.

Abstract: The cross-flow turbine machine provides shaft power by extracting energy from a moving fluid. The fluid comprises both liquids and gases. Fluid is guided into the rotor by inlet guide means. The fluid then flows through the first rotor, through the interior, through the second rotor, through the exit, and through the diffuser to exit the machine at ambient pressure. Due to the change in angular momentum of the fluid across the turbine rotor, a torque is applied to the output power shaft. The output power shaft can be used, for example, to drive a water pump, an electric generator, or a compressor.

Abstract: The angle of the variable blocker door vanes in the bypass duct of a turbofan engine is varied in response to the angle of the variable compressor vanes of the engine. A cam and linkage assembly interconnect the blocker doors with the actuation system of the variable stator vanes such that as the angle of the stator vanes is modulated through a first predetermined range, the angle of the blocker doors is modulated through a second predetermined range.

Abstract: Apparatus having radially disposed adjustable pitch fan blades embodies a split hub that is adapted to retain the blades in the plane of the hub. One portion of the hub includes an annular base with concentric upstanding inner and outer walls that define a channel. The outer wall includes a plurality of openings in which the blades are rotatably journalled with a cam portion of each blade extending into the channel. Cam follower means are slidably disposed in the channel and interlink adjacent cam portions so that rotation of any one blade will correspondingly adjust the pitch of each of the other blades. The blades are locked to a predetermined pitch setting by fastening the hub portions together. Another embodiment includes the fan blades and split hub which is bushed and secured to a shaft of a reversible drive motor.

Abstract: In the combination of an internal combustion engine, a turbocharger and a ste gate, the improvement is the waste gate which includes a fluidic device having its inlet and outlet connected in parallel with the turbine of the turbocharger and a biasing port responsive to the output of the turbocharger to proportion the fluid flow from the inlet to the outlet between two parallel fluidic paths having a high and low flow resistance respectively. The fluidic device is a fluid amplifier providing radial and tangential flow to a vortex valve to produce the low and high resistance fluidic paths respectively. Alternatively, the fluidic device could be in series with the turbocharger to backpressure the compressor of the turbocharger.

Abstract: In an air blower of the type including a housing having an air inlet and a motor and a fan positioned in the housing, there is disclosed an improvement wherein the housing has first and second outlets and a pivotable plate for selectively sealing either of the outlets so that a single blower can be used to drive two different air flow systems. The housing also has a mechanical device for controlling the rate of air flow into the outlets.

Abstract: A gas turbine engine has a power turbine driven by gas flow across a nozzle arrangement that includes a partial admission gate valve therein that is movable into and out of overlying relationship with a limited number of vanes of the nozzle in order to control power output therefrom during part load operation of the engine.

Abstract: A diffuser control for controlling vapor flow through a diffuser passage comprising an annular recess defined by a housing of the passage and in communication therewith, a diffuser control ring supported for movement within the annular recess and the diffuser passage between a full throttling position, wherein the restriction means throttles vapor flow through the diffuser passage, and an open position for permitting a substantially free flow of vapor through the diffuser passage. The control further comprises a first set of springs for urging the control ring toward the full throttling position, and a second set of springs for urging the control ring toward an intermediate throttling position located between the open and full throttling positions. The diffuser control also comprises a low pressure conduit for connecting the annular recess to a low pressure source, and a intermediate pressure conduit for connecting the annular recess to an intermediate pressure source.

Abstract: A fan assembly for a ventilator system. The assembly comprises a fan housing a inlet end and an outlet end. One or more blower wheels are secured for rotation in the fan housing to direct air from the inlet end to the outlet end. Each of the blower wheels has a plurality of inclined peripheral fan blades. Means is provided to support and impart a rotational drive to the blower wheels. An adjustable cylindrical damper is movably supported in closely spaced relationship to the periphery of the blower wheels to vary the quantity of fluid directed to the outlet end of the fan housing.

Abstract: An inducer for a high speed centrifugal pump includes a shaft located upstream of the inlet eye of the centrifugal pump concentrically within an inlet bore; and further includes a plurality of axial blades on an inducer shaft for producing a boost pressure to the inlet of the centrifugal pump and wherein means are included to direct a spray of fuel in a direction radially of the longitudinal axis of the shaft immediately upstream of the blades to reduce the amount of fuel flow across the inducer with a resultant lowered pressure rise than would otherwise occur.