Abstract: An intake and exhaust damper assembly has a motor and fan assembly pivotally mounted for movement toward and away from a louvered rotatable blade damper.

Abstract: Water is first caused to flow through a first passage and rotate a first impeller. Rotation of the first impeller is linked to rotation of a second impeller, which is in fluid communication with a second, discrete passage. Vanes on the second impeller are constrained to move faster than vanes on the first impeller. Water is subsequently caused to flow through the second passage and to be more aggressively advanced by the second impeller.

Abstract: An intake and exhaust fan assembly is provided having a motor and fan assembly mounted for movement on rails toward and away from a rotatable blade damper mounted on an angle to the motor/fan assembly.

Abstract: A regulating valve for engines operated by a medium under pressure, in particular compressed air operated engines, in order to regulate the flow of compressed air to the engine to provide a substantially constant revolution rate at varying load, the regulating valve being provided with a valve body for controlling the momentary volume flow through the regulating valve.

Abstract: An impulse turbine comprises at least one runner keyed to a drive shaft in association with a distributor unit which has, for each runner, a circular outlet for the supply of fluid from the distributor unit to the blades of a respective runner. Each outlet is arranged coaxially inside the respective runner and the distributor unit is shaped in a manner such as to define a substantially circular path for the fluid and to cause the fluid to emerge from the distributor unit through the at least one outlet predominantly tangentially relative to the outlet.

Abstract: An aerodynamic-shaped fan blade for use in a fan apparatus. The blade has a cross-section which is essentially an inverted pan-shape with an intermediate section, a leading edge section, and a trailing edge section which form concave and convex surfaces. The trailing edge has a flange doubled back toward the leading edge within the concave envelope.

Abstract: In a turbo compressor, such as a centrifugal compressor, having swirl inducing structure, such as inlet guide vanes, one or more free rotors are located intermediate the swirl inducing structure and the inlet of the compressor. The free rotors are driven by the flow and the kinetic energy stored therein serves to mitigate transient changes in the flow as perceived at the inlet of the compressor such that a more stable operation results.

Abstract: An aerodynamic-shaped propeller blade. The blade has a cross-section which is essentially an inverted pan-shape with an intermediate section, a leading edge section, and a trailing edge section which form concave and convex surfaces. The trailing edge has a flange doubled back toward the leading edge within the concave envelope.

Abstract: An apparatus achieves passive damping of flow disturbances to control centrifugal compressor surge. The apparatus includes a centrifugal compressor for compressing a low pressure fluid. The centrifugal compressor has an impeller, an inlet which communicates with an atmosphere and a discharge through which compressed air is supplied to a compressed air system. A fluid flow control is flow connected with the inlet for controlling the flow of a low pressure fluid to the compressor. A check valve is flow connected with the discharge for preventing high pressure fluid from back flowing to the compressor. A vane diffuser assembly fluidly communicates with the impeller. A spring-mass-damper system is coupled to any one or all of the fluid flow control, check valve or vane diffuser to dampen low amplitude flow disturbances of the compressible fluid.

Abstract: An apparatus achieves passive damping of flow disturbances to control centrifugal compressor surge. The apparatus includes a centrifugal compressor for compressing a low pressure fluid. The centrifugal compressor has an impeller, an inlet which communicates with an atmosphere and a discharge through which compressed air is supplied to a compressed air system. A fluid flow control is flow connected with the inlet for controlling the flow of a low pressure fluid to the compressor. A check valve is flow connected with the discharge for preventing high pressure fluid from back flowing to the compressor. A vane diffuser assembly fluidly communicates with the impeller. A spring-mass-damper system is coupled to any one or all of the fluid flow control, check valve or vane diffuser to dampen low amplitude flow disturbances of the compressible fluid.

Abstract: A bore-hole pump for pumping a highly viscous fluid, into which is fed a solvent which has a low viscosity and which is miscible with the fluid. A shutoff device is disposed between an inlet of the bore-hole pump and an actual inlet of the pump part. The shut-off device is activated by the solvent.

Abstract: A self regulating bleed valve for a gas turbine engine is provided which taps or bleeds a portion of a gas, typically air, from a duct of the gas turbine having a wall bounding the gas flow. The bleed valve has a valve member pivotally attached to the wall such that the valve member extends through a main opening formed in the wall. The valve member has an internal cavity in communication with a gas inlet opening and a gas exhaust opening and is pivotally movable between an extended position wherein the gas inlet opening portion of the valve member extends into the gas flow duct such that the inlet opening faces generally in an upstream direction so as to deflect a portion of gas flow into the internal cavity, and a retracted position wherein the inlet opening extends obliquely, generally parallel, to the gas flow so as to minimize the air tapped or bled from the gas flow.

Abstract: An improved automatic pump capable of advantageously reducing manufacturing processes thereof as well as significantly preventing pressure decrease in a pump assembly by providing a pressure control tube and removing a sealing process thereof, which includes a motor for transmitting driving force to corresponding elements thereof; a working chamber formed in front of the motor, in which an impeller drivingly connected to a rotary shaft of the motor is disposed; a pump casing attachably attached to a predetermined portion of the working chamber and having a pressure tank with a predetermined size thereof; and a pressure control tube equipped with an air pressuring port disposed at a predetermined portion of the pump casing.

Abstract: A ram air turbine generator comprises a cylindrical external fairing having bypass exhaust orifices adjacent the leading end and external exhaust ports adjacent the aft end. A central flow guide is coaxially mounted and has a contoured outer surface spaced from the external fairing. A valve tube is coaxial with, and intermediate, the external fairing and the central flow guide and extends between a nose end with openings nearest the leading end of the external fairing and an aft plate. The valve tube also has a plurality of aft internal exhaust ports generally coextensive with the aft external exhaust ports in the external fairing.

Abstract: The invention is a turbo machine comprising a rotatably mounted blade row, such as a compressing or pumping rotor and apparatus for providing aerodynamic feedback to the blade row which feedback apparatus has substantially zero pressure difference across it. The feedback may be provided by various apparatus, including at least one free-rotor that is mounted in aerodynamic feedback with the blade row, for instance coaxially with respect to the axis of rotation of the blade row and freely rotatably with respect to the blade row. The free-rotor may also be located in ductwork in communication with the blade row. The feedback may also be provided by a blade row having a variable stagger angle and apparatus to adjust the stagger angle so that the mean pressure rise across the variable stagger angle blade row is zero. The invention also includes a method for controlling operating anomalies such as rotating stall and surge of a turbo machine such as a compressor using the above described apparatus.

Abstract: A hydrodynamic torque converter includes a pump wheel, a turbine wheel, and a stator wheel having a variable entrance between the blade rows upon at least one of these wheels, preferably on the stator wheel. The opening between the blades is adjustable automatically by the torque applied by the circulating fluid against the action of a compression spring. The blades on the wheel whose entrance is adjustable includes at least two annular members divided along a plane perpendicular to the axis of the wheel. The annular members are rotatable relative to one another approximately one-half blade pitch. The annular member becomes located in the inlet region of the blade row, is rotatable by the torque of the circulating flow only in the region of the installed condition against the force of the spring to a position that reduces the inlet cross section of the blade row.

Abstract: An exhaust gas turbocharger comprising a turbine with a guide apparatus comprising a ring of guide vanes arranged concentrically around a rotor axis and pivotable between two end limits. A first securing ring is arranged at the side of a bearing housing for mounting a first trunnion of each guide vane which is also mounted at the side of an oppositely disposed turbine housing. An adjusting mechanism is provided for adjusting one of the two end limits, and the guide vanes are freely pivotable under the influence of flow forces in the resulting predetemined angle adjustment range. The arrangement makes possible a compact construction which can be fabricated at reduced cost and easily assembled. This is achieved by an assembly containing the guide apparatus and the adjusting mechanism, and which includes a second securing ring arranged at the side of a turbine housing for mounting a second trunnion of each guide vane.

Abstract: A variable control mechanism for a turbine engine, in particular an exhaust gas turbine of a turbocharger, with a ring of guide blades arranged concentrically around a rotor axle and pivoting around pivot axles between end limits. The pivot axles are arranged in the forward areas associated with the inflow edges of the guide blades; one of the end limits being variable by means of an adjusting ring or the like. Clearance and impact losses are incurred depending on the prevailing setting of the guide blades. The invention provides a guide mechanism which can be constructed inexpensively and which reduces clearance and impact losses. The guide blades are arranged such that they can pivot freely within an angular setting range defined by the end limits. In case of a low load the guide blades pivot freely within the predetermined end limits, and with rising loads they abut against the variable end limit.

Abstract: Hot spots in the first stage turbine nozzles of small and medium sized engines are eliminated by spinning the nozzle assembly which consists of an annular hub circumscribed by a nozzle diaphragm having an inner and outer shroud ring between which are a multiplicity of symmetrically positioned vanes of airfoil design. Power to turn the nozzle assembly is obtained by connecting it to a rotary-type, vaned diffuser stage which lies in radial alignment with the impeller of the engine compressor. The rotary diffuser and nozzle combination is configured to turn at 50-1,000 rpm enabling the combined assembly to be mounted on unlubricated ceramic bearings.

Abstract: The invention provides a novel cold source for a Rankine cycle system which employs the use of cold seasonal temperatures to form an ice bed and which allows insulation of said ice bed from warm seasonal temperatures, the cold source comprising a container having an insulated side wall and an insulated bottom; a ventilated top wall mounted above said side wall, said top wall permitting a flow of external air to said container; means associated with said top wall for controlling the flow of external air to said reservoir; an insulated cover mounted on said top wall, a grate extending across said reservoir above said bottom defining a space for containment of a body of water; and means associated with said reservoir for spraying water into said reservoir. The invention also provides a novel turbine, condenser and evaporator assembly, and a magnetically-actuated fluid pump which may also be used for Rankine Cycle Systems.

Abstract: A supercharger has a high pressure engine exhaust gas passage, a control gas duct communicating with the high pressure passage and a valve for opening and closing communication between the high pressure passage and the control gas duct. A turbine rotor is mounted at one end of driveshaft; a compressor rotor is mounted at the opposite axial end. Air at ambient conditions is admitted to the compressor rotor which is driven through the driveshaft from the turbine. The air is compressed and pumped into the intake manifold of a spark ignition engine. The valve operates to increase the flow rate of control gas at low engine speeds and to decrease the flow rate of control gas at high engine speeds. The control gas enters the mainstream of exhaust gas that flows in the turbine inlet duct thus restricting the area of the inlet duct when engine speed is low and increasing the exhaust gas flow rate when engine speed is high.

Abstract: A sprinkler head has a pop-up riser having a nozzle at the upper end thereof for directing a desired flow of fluid therefrom; the riser contains a turbine drive device for rotating the nozzle in response to fluid passing through the sprinkler head; the nozzle having a sealing surface with a part of the sprinkler head; the nozzle being biased against the part so that fluid passing through the nozzle decreases the force biasing the nozzle against the non-rotating part. A modification of the nozzle and turbine drive is disclosed. The modified nozzle is biased against the non-rotating part at a predetermined sealing load which has a minimum effect by the pressure of the fluid flowing through the nozzle. The turbine drive has a gear drive housing filled with fluid and sealed from contact with the fluid passing through the sprinkler head by a capillary tube.

Abstract: New concepts of Components and Unities of Turbo-Machines based on a mathematical theory checked through experiments and permitting to predict the behaviour of a fluid particle subjected to a system of forces;Structures enabling all types of Single and Compound Turbo-Machines to operate through new principles insuring the Maximum Possible Efficiency to these Machines.

Abstract: Disclosed is a variable guide vane arrangement for use in a high-load compressor having at least one axial-flow stage in turbomachines including gas turbine engines, comprising a plurality of guide vanes positioned radially adjacent one another about a circumference in the axial flow stage of the compressor, each vane having a low-pressure and a high-pressure side during operation; a plurality of generally disk shaped turntable members, each of the vanes being secured at its outer end to one of the turntable members and each of the turntable members being rotatably mounted about the circumference, the diameter of each of the turntable members being greater than the spacing between adjacent guide vanes; and each of the turntable members being generally round and having a cut-out portion on the side adjacent to the low-pressure side of the guide vane secured thereto.

Abstract: A nuclear steam supply system wherein each of a plurality of centrifugal pumps begins to operate with full cavitation in response to an abrupt drop of system pressure in the event of leakage. This is achieved by influencing a net positive suction head of each pump over the entire range of fluid flow and/or by influencing the net positive suction head upstream of the pumps. The first mode of causing the pumps to operate with full cavitation includes an appropriate selection of the inlet angle and/or inlet diameter of the pump impeller, the provision of auxiliary stationary guide wheels which are located upstream of the pumps and can circulate the fluid in or counter to the direction of rotation of the respective pump impellers, or the provision of suitably curved guide vanes in the pumps. The second mode includes interrupting the admission of undercooled fluid into the system upstream of the pumps.

Abstract: A power-generating wind-driven turbine is disclosed which offers the advantage that it is compact and lightweight and is capable of producing a substantially greater output than a conventional windmill with a comparable size rotor. The turbine comprises an outer shroud and a nose cone which provide a streamlined wind collecting inlet designed so that the air stream is contracted to increase its velocity through the turbine blades, plus an exit section designed to exhaust the air stream with a minimum of turbulence.

Abstract: A wind powered electrical generating system having a suitable shaped aerodynamic duct or shroud within which a wind turbine having a fixed pitch blade is mounted, as by means of a stator means at the inlet of the duct or shroud with the stator means including mechanism for varying their effective angle of attack with regard to the approaching wind so as to provide the desired swirling approach of the wind to the turbine therebehind in achieving the desired torque and speed of shafting from the turbine to generator driven by the turbine in maintaining constant phase and frequency of the electrical output wherein the duct or shroud is mounted by a tower or shaft that will permit the cocking of the structure into the wind.

Abstract: A nuclear steam supply system wherein each of a plurality of centrifugal pumps begins to operate with full cavitation in response to an abrupt drop of system pressure in the event of leakage. This is achieved by influencing the net positive suction head of each pump over the entire range of fluid flow and/or by influencing the net positive suction head upstream of the pumps. The first mode of causing the pumps to operate with full cavitation includes an appropriate selection of the inlet angle and/or inlet diameter of pump impeller, or the provision of suitably curved guide vanes in the pumps. The second mode includes interrupting the admission of undercooled fluid into the system upstream of the pumps.

Abstract: In the connection between the unison ring and the actuating arms carried by the several vanes of a variable stator ring in an axial flow compressor and providing for turning the vanes as the unison ring is moved, the pivot that must permit angular misalignment, relative rotation and axial movement is an elliptical-shaped bushing mounted on either the ring or arm and engaging a cylindrical surface on the other of the ring or arm. The bushing is normally mounted on a pin and the cylindrical surface is provided by a sleeve, the elliptical element having slidable engagement with the sleeve. The bushing may be a metallic spring or may be made of an elastomer.

Abstract: A stator vane assembly for a compressor or turbine of a gas turbine engine. The stator vane assembly comprises a plurality of circumferentially-spaced stator vanes extending in a generally radial direction between radially spaced co-axial annular walls mounted co-axially on a rotor of the compressor or turbine. The vanes are flexible and are engaged at at least one position in the radial length thereof by an axially movable annular vane-deflecting member, whereby the vanes are deflectable in cross-sectional shape depending upon the axial position of the vane-deflecting member.

Abstract: A choke valve (safety valve) is provided in association with a submergible pump employed in oil wells or the like to prevent the flow of well fluid toward the well head when the pump is not operating. Differential pressure across the pump is employed to open the valve, and the valve closes automatically when the pump is de-energized. Bottom-hole pressure merely closes the valve more tightly. A reciprocating tapered valve member controls the opening and closing of a longitudinal passage through a tubular valve housing, the differential pump pressure being applied across an annular piston reciprocating in an annular chamber surrounding the longitudinal passage and connected to the valve member by a plurality of longitudinal piston rods, springs surrounding the piston rods biasing the valve member to a closed position. The storm choke can be operated by fluid pressure applied from the earth's surface in order to permit "killing the well" or flushing sand from the choke.

Abstract: Ventilating device including an outer casing formed of a casing part having a forward side formed with an opening, and a lid articulatingly connected to a lower forward edge of the casing part, partly defining the opening, the outer casing being installable in a window frame, the outer casing being elongated and having a substantially uniform cross section over the entire length thereof, the casing part in a rearward lower region thereof being formed with openings, the outer casing in closed condition of the lid and the casing part having an octagonal outer cross section with upper and lower horizontal surfaces engageable by correspondingly wide surfaces of a window frame, with a forward vertical surface entirely and both forward inclined surfaces at least partly formed by the lid, and with a lower rearward inclined surface wherein the openings are formed.

Abstract: Submersible electric motor driven inducer equipped centrifugal pump units, especially suitable for the pumping of cryogenic fluids or fluids at their boiling point, and capable of maintaining full flow under low submergence conditions are provided by disconnecting the inducers from co-rotation with the main impeller shaft while still retaining the main shaft for support and are powered by a source in the unit such as a slip coupling, a hydraulic turbine driven by pumpage from the pump impeller, or a separate electric motor. These power sources drive the inducer at speeds slower than the pump impeller to develop the desired suction head for the impeller without drawing excessive power or producing undesirable thrusts and reduce pump-out time for the last few feet of cargo. A hydraulic or magnetic clutch coupling with the main electric motor drive may be used in combination with the turbine power source for the inducer to start the pumping action.

Abstract: This invention relates to a ventilating fan of the kind comprising a housing defining an air passage, and an impeller rotatable from an electric motor or other prime mover within the housing.The invention is concerned with the provision of an improved automatic shutter device which consists of shutter plates which may have their pivot axes tangential to a common circle and movable between a position which closes the air passage and a position which opens said air passage. The shutter device is operated by means responsive to rotation of the impeller shaft for moving the shutter means to the open position when the impeller is rotating and to the closed position when the impeller is not rotating. The shutter operating means may be such that substantially no thrust or load is placed upon the prime mover when it is rotating at a selected operating speed.

Abstract: A two-stage diffuser is disclosed which is intended to be used with a high pressure ratio centrifugal compressor. The first stage comprises a vaneless diffuser passage having rotating sidewalls that freely turn on bearings mounted coaxially with the compressor rotor. The second stage comprises a stationary vaned-type diffuser. In combination, the two stages provide a compact diffuser having improved efficiency. Gas flow leaving the compressor from the periphery of the impeller at supersonic speed contacts the moving sidewalls of the rotary diffuser stage. By having these walls travel at nearly half the speed of the impeller, relative difference in speed between the gas and the walls is subsonic, hence, no shock wave occurs. Expansion of the gas in the first rotary diffuser stage makes it possible to deliver subsonic gas to the vaned second stage.