Abstract: A system and method for modular control of a multi-fuel turbogenerator include separate controllers for controlling fuel supplied to the combustor and power output from the generator. The power controller generates a fuel command based on the required turbine exhaust temperature, where the fuel command is independent of the particular fuel being used. Fuels may include natural gas, diesel, propane, waste gas, or gasoline, for example. The power controller communicates the fuel command and the airflow or calculated air/fuel ratio to the fuel controller which selects an appropriate mode of operation for the injectors. Injector operating modes include one or more pilot modes where fuel is not mixed with air prior to combustion, and one or more premix modes where fuel is highly mixed with air prior to combustion.

Abstract: The present invention is to provide a magnetic bearing controller capable of reliably controlling the position of a floating member at a target position, even when the length of the cable connecting the magnetic bearing and the controller is changed. The magnetic bearing controller comprises: an electromagnet for supporting a floating member in a floating state; sensors (Z1, Z2) for sensing the floating position of the floating member; and a controller for supplying sensor signals and an exciting currents via cables to the sensors and electromagnets, respectively, in order to support the floating member at a predetermined floating position based on signals received from the sensors, wherein the controller comprises.

Abstract: A discharge muffler of a hermetic rotary compressor has a simple structure, and reduces the noises which occur due to pulsation of refrigerant and impact to a valve when the refrigerant, which is compressed in an inner space of a cylinder of the compressor, is discharged. The discharge muffler includes a muffler body which is disposed above an upper flange to define a noise reducing space with the upper flange, and has a pair of discharge openings through which the refrigerant, which is discharged to the noise reducing space, is discharged, and a phase varying means for preventing the noises which occur due to the pulsation of the refrigerant and the impact to the valve which is disposed at the discharge port, from being discharged together with the refrigerant. The phase varying means also functions to vary the phases of the noises and to counterbalance the noises.

Abstract: The present invention relates to an overheat protection device for a scroll compressor which can prevent a sealing member from being damaged due to the overheat, by detecting a temperature of an inhaled or discharged gas of the compressor and directly stopping driving of the compressor, without using a special controller, when the gas temperature exceeds an adequate temperature. In the scroll compressor having in a casing an orbiting scroll and a fixed scroll for inhaling, compressing and discharging a gas, and a driving motor for driving the orbiting scroll, an overheat protection device for the scroll compressor stopping the driving motor when a detected temperature exceeds an adequate temperature, a temperature detection device for detecting a temperature of the gas of a low pressure region where the gas is inhaled and a high pressure region where the gas is discharged through a discharge port of the fixed scroll being connected between a power terminal and the driving motor in an electrical serial state.

Abstract: The fluid reservoir of a hydraulic system is fitted with a nozzle having a constricted primary discharge opening for directing an accelerated jet stream of hydraulic fluid returned to the reservoir from a pump back to an inlet of the pump. The jet stream aspirates additional fluid from the reservoir to boost the supply to the pump to minimize cavitation for quiet operation. The nozzle includes at least one bleed hole located upstream of the primary discharge opening through which a fraction of the fluid stream escapes into the reservoir and is permitted to dwell for a time sufficient to allow natural separation of entrained gas from the fractional stream before being drawn into the reservoir outlet by the jet stream.

Abstract: A liquid discharge head is provided having a heating member for generating thermal energy to create a bubble in liquid, a discharge port adapted to discharge the liquid, and a liquid flow path communicated with the discharge port having a bubble generating area for enabling the liquid to create the bubble. A moveable member is arranged in the bubble generating area to be displaced along with the development of the bubble. A regulating portion regulates the displacement of the moveable member within a desired range, and by means of energy at the time of bubble creation, the liquid being discharged from the discharge port. The regulating portion is arranged to face the bubble generating area in the liquid flow path. A support member is directly connected to the moveable member. The bubble development causes the moveable member and the regulating portion to be in contact forming an essentially closed space with the exception of the discharge port.

Abstract: An electric motor having a housing, having an armature, having an armature shaft supported in two slide bearings, where one of the slide bearings axially displaceably receives the armature shaft and the other slide bearing limits an axial displaceability of the armature shaft by the disposition of a stop disk between a slide bearing bush of the slide bearing and the armature, by the disposition of an axial stop, in the form of a stop ring pressed over one end of the armature shaft. The armature shaft end protrudes out of the housing and is intended for carrying and driving a fan wheel that has a hub which is located adjacent the particular a slide bearing that receives only radial forces.

Abstract: Pump chambers are disclosed that include at least one spacer element therein to prevent any gas in the pump chamber from being pumped from the pump chamber during pumping. In some embodiments, the pump chambers are included in removable pumping cartridges that are constructed and configured for coupling with reusable pump drives. Some embodiments of pump chambers including spacer elements therein comprise a substantially rigid component forming a wall of the pump chamber with a flexible or movable membrane disposed on the wall to form the chamber. Spacer elements in such pump chambers are, in some embodiments, attached to a wall of the substantially rigid component so as to prevent the movable/flexible membrane from contacting the wall during pumping.

Abstract: The invention enhances a joined portion between a bearing holder and a stator core in a blower. In the blower including a stator core attached to the outer circumference of a bearing holder, a setscrew for impeding the stator core from being pulled out is interposed between the bearing holder and the stator core. The setscrew is used for fixing in place of adhesives which is used in conventional art, ensuring the joining between the bearing holder and the stator core as well as facilitating the disassembling work.

Abstract: A turbojet engine includes a housing having a forward inlet nozzle, an aft exhaust nozzle, a combustion chamber therebetween, a compressor between the inlet nozzle and the combustion chamber, and a turbine between the combustion chamber and the exhaust nozzle. A liquid fuel injector is provided to inject atomized or vaporized fuel into the chamber for combustion therein. In addition, a solid fuel is provided in the aft exhaust nozzle. The solid fuel may be used to assist the starting of the engine, particularly useful under adverse starting conditions. That is, when the compressor begins to spin up to pump air through the engine, the solid fuel in the exhaust nozzle is ignited by an igniter which begins to combust with the oxygen rich air introduced by the compressor. This combustion increases the temperature in the entire engine, such that when liquid fuel is injected in the combustion chamber, the temperature is sufficiently high to allow the liquid fuel to burn in a self-sustaining manner.

Abstract: A pumping system for supplying high pressure actuation fluid to individual fuel injectors of an engine equipped with a hydraulically-actuated fuel injection system wherein the three major elements of the system, namely, the pump, the rail pressure control valve and the bleed-off sump or reservoir are physically separated and spaced from one another. The pump is annular, having a central opening through which the engine crankshaft passes. The crankshaft and pump wobble plate are rotationally coupled by opposing flats on each. The pump, rail pressure control valve and reservoir are mounted directly to the engine, receiving and discharging fluid through internal engine passageways, thereby eliminating the usual tubing, and fittings. The pump itself is compact and relatively short in the axial direction, leaving space for mounting such things as a cylindrical housing having belt grooves in its outer surface and a viscous damper on the crankshaft between the pump and the terminal crankshaft end.

Abstract: A reciprocating compressor carries suction valve apparatus on its piston in the form of a sheath. The sheath is retained and guided for motion both in conformance with and relative to the piston on which it is carried so as to accommodate both the flow of suction gas into the cylinder in which the piston-sheath combination is disposed and the compression of such gas therein. Retainers are disposed in the ends of the piston's wrist pin and have end faces disposed in accommodating apertures in the sheath. The configuration of the retainer end faces and the sheath apertures in which they are disposed act to limit and guide the movement of the sheath with respect to the piston.

Abstract: A suction sound damper for a hermetically encapsulated compressor has a housing that is formed of at least an upper part (3), a lower part (1) and an insert (2), and having at least two chambers (7, 8) and a channel (9), connected thereto, leading from a lower inlet opening (10) to an upper outlet opening (11). The insert (2) has a side wall (18) which, together with a section (19) of the housing wall, forms a capillary gap (20) in which lubricating oil collects and is retained. This produces additional sound damping.

Abstract: A radial flow engine has at least one rotor with an internal cavity that includes a vaporization section and a condensation section. The condensation section is disposed radially inward toward the shaft and the vaporization section extends radially outward adjacent to the surface of the rotor blade. The vaporization section includes a series of pockets for dispersing the cooling fluid within each blade, and a cascaded series of capture protrusions to distribute the liquid coolant to the successive radially-arrayed pockets. A working system includes a centrifugal compressor which feeds a compressed air fuel mixture to an annular combustion chamber that, in turn, feeds the combustion gases along a radial direction to impinge on the surface of the cooled radial flow rotor. Optionally, the system is a regenerative system including a heat exchange sub-assembly which couples heat from the exhaust stream to a position between the compressor and combustion chamber.

Abstract: A fuel injector for a gas turbine engine includes an elongated primary fuel tube residing within an elongated secondary fuel tube. The primary fuel tube is brazed or otherwise metallurgically joined to the injector housing proximate opposite end regions of the primary fuel tube. Between the end regions, the primary fuel tube includes a spiral configuration or profile that engages the inner wall of the secondary fuel tube in line-to-line interference contact along a sufficient portion of the lengths of the primary and secondary fuel tubes effective to reduce thermal and vibration stresses on the primary fuel tube and essentially eliminate fatigue failure at the brazed end regions and to increase its axial compliance, thereby lowering internal stresses imparted by a given thermal strain caused by rigid attachment of the relatively cool primary tube to the relatively hot support housing.

Abstract: An integrated gas turbine and air separation process and system having an air separation unit integrated with a gas turbine-driven air compression system which operates using fuel as the primary energy source. Feed air for the air separation unit is provided by two separate compressors driven by the gas turbine expander wherein one compressor provides air to the air separation unit and to the gas turbine combustor, and the other compressor provides feed air to the air separation unit. The ability to control an integrated air separation/gas turbine process during off-design or turndown conditions is improved by the use of two air compressors in the present invention compared with the usual single compressor gas turbine system. In the design of the integrated gas turbine and air separation system, the power requirement for a given air compression duty can be matched more readily to the power output of an available expansion turbine when two air compressors are used rather than a single air compressor.

Abstract: A device for the external cooling of the electrical drive motor of a centrifugal pump unit, which with the motor is advantageously to be assembled above the centrifugal pump, comprises a hermetically closed hollow body of heat-conducting material which circumferentially at least partly surrounds the motor and which with its wall surface on the motor side and on the pump side is in heat-conducting surface contact with the motor and the centrifugal pump, wherein the hollow body is essentially filled with a fluid which transfers the motor heat and which, with a heated motor, is subject to a natural circular convection flow.

Abstract: A cooling fan comprises a rotor, a stator, a circuit board, a base, and a magnetic plate wherein rotor includes blades, a magnetic recess, and a shaft; stator has posts; circuit board has apertures corresponding to the posts; and base includes a bearing and a sleeve. Posts of stator are inserted into apertures of circuit board, shaft of rotor is inserted through stator and circuit board to secure in the bearing of base, and magnetic plate is located between stator and circuit board corresponding to and lower than magnetic recess of rotor by a gap, and is spaced apart from the poles of stator. By utilizing this, a cooling fan with anti deflection capability, enhanced performance, and prolonged life is effected.

Abstract: In a gas turbine (10) with a plurality of individual burners (B1, . . . , B6; Bn) which are connected to a fuel distribution system (21) and are supplied with fuel from a common fuel feed (28) via the fuel distribution system (21), there being provided, within the fuel distribution system (21), means by which the fuel mass flows to the individual burners (B1, . . . , B6; Bn) can be varied in order to improve the operating parameters of the gas turbine (10), an improvement in the operating parameters is achieved in a simple way in that a fixed throttle member, determining the fuel mass flow to at least one of the burners (B1, . . . , B6; Bn), is arranged in the fuel distribution system (21) upstream of the at least one burner, and in that the reduction in cross section of the throttle member is selected in such a way that existing inequalities in the fuel distribution system (21) as regards the fuel mass flows to the individual burners (B1, . . . , B6; Bn) are reduced.

Abstract: An oil free screw compressor includes a compressor main body directly connected to a high speed motor via a drive side gear and a driven side gear having a uniform speed ratio. A bearing in a side of the high speed motor employs one having the same size as that of a bearing in a side of the compressor main body. The same material as a viscous seal provided at both end portions of a male rotor and a female rotor is used for a viscous seal provided at both end portions of a motor shaft. The high speed motor is driven by a high frequency type inverter. The electric motor side and the compressor main body side are made in a rotational shaft structure which is dummy symmetrical about a uniform gear portion. In the oil free screw compressor, a speed increasing apparatus for increasing an output of an electric motor and a suction throttle valve are not required. Then, parts in the compressor main body side and parts in the electric motor side are made common, and a structure is made simple.