Abstract: The present invention discloses a biaxial supporting device for a rotary opposed piston engine, comprising a cylinder body, a fixing component, a thick axle and a thin axle; the interior of the cylinder body has a cavity; the fixing component is fixed on the outer side wall of the cylinder body; the thick axle is provided with a through hole coaxial with the first axle hole, and is rotatably connected with the through hole; the thin axle is in transition fit with the through hole of the thick axle, and is rotatably connected with the fixing component. The present invention has simple structure, can effectively reduce a diameter difference of two axles to ensure the relatively small diameter of the thick axle and the relatively high strength of the thin axle, and can effectively realize biaxial support of the rotary opposed piston engine.

Abstract: A rotary lifting device comprises a rotary lifting shaft having a longitudinal axis, a linear motor for moving the rotary lifting shaft in the direction of its longitudinal axis, and a rotary motor for rotating the rotary lifting shaft about its longitudinal axis. The rotary motor has a stator and a hollow rotor, through which the rotary lifting shaft extends. The hollow rotor is rotationally kinematically coupled to the rotary lifting shaft. The linear motor is arranged stationary relative to the rotary motor and has an armature having a motion axis along which the armature is supported so as to be linearly movable. The armature is kinematically coupled to the rotary lifting shaft with respect to the movement of the rotary lifting shaft in the direction of its longitudinal axis at a first longitudinal end of the rotary lifting shaft.

Abstract: A compressor includes a suction hole provided in a cylinder. The suction hole includes a plurality of portions being different in diameter and disposed from an outer circumferential side toward an inner circumferential side of the cylinder. The plurality of portions are reduced more in diameter toward the inner circumferential side of the cylinder. A central axis of an outer circumferential side suction hole of the plurality of portions intersects a central axis of the cylinder. A central axis of an inner circumferential side suction hole of the plurality of portions is parallel to the central axis of an outermost circumferential side portion and decentered from the central axis in an opposite direction to a direction of a spring hole.

Abstract: A pump assembly is provided and includes a housing having first, second and third pairs of fluid openings and first, second and third rotary pumps, which are co-rotatable about a common longitudinal axis defined through the housing to drive fluid flow relative to the first, second and third pairs of fluid openings, respectively. The first rotary pump includes an input member receptive of rotational drive energy for the first, second and third rotary pumps.

Abstract: The invention relates to a rotary lobe pump for conveying solids-laden fluids engendered in agriculture, in which the conveyed fluid volume flow adapts itself to different operating modes. For improved self-priming, the rotary lobe pump is designed for vertical mounting of the rotary lobes, wherein an angular gear is provided. The rotary lobes are mounted in a topside or underside cover, wherein the axes of the rotary lobes are vertically oriented. Using one of the covers, the rotary lobes can be vertically removed and maintained without having to dismantle other pump components from the pump housing. The rotary lobes can also be removed together with the angular gear as an integral pump component using one of the covers.

Abstract: Scroll type fluid machinery, in which two stationary scrolls (2A, 2B) are fixed onto a housing (1), and form volume changing mechanisms (50A, 50B) with matching orbiting scrolls (3A, 3B). Three orbiting units (40) are located between the two volume changing mechanisms. Each orbiting unit comprises a rotating member (10) and a thrust-cancelling shaft (20). Assembly sets of the thrust-canceling shaft consist of turning elements and a connector, which in turn connects with orbiting scrolls through threads. There exists only circumferential constraint but no axial constraint between the connector and the turning element. Rotating turning element will rotate the connector, and thus move the two orbiting scrolls closer or farther through the threads on the connector. The rotating member of this invention further provides a larger space to the supporting bearings (14A, 14B) of the thrust-canceling shaft, and also eases component manufacturing, machinery's assembly and adjustment, and bearings' cooling.

Abstract: A vane machine for expansion or compression of gases, air, engine exhaust, vapors or a mixture thereof, includes a housing with a cylindrical space having inlet and outlet ports, a shaft offset in parallel or eccentric relative to a central housing axis and first and second circular discs on the shaft mutually offset in parallel. Slides are guided by the circular discs and displaceable in direction of an inner housing wall. Vane cells are formed by two neighboring slides and an adjoining region of the wall and volumes of the vane cells in vicinity of the inlet and outlet ports differ. To obtain reliability and efficiency, each circular disc has a plurality of circular arcuate slots, each slide can have a circular arc shape on an end facing the housing, and the circular arcuate part of each slide moves into circular arcuate slots of first and second circular discs.

Abstract: A rotary compressor is provided. The rotary compressor may include a plurality of cylinders each having a suction port formed such that an intersection of a center line of the suction port and a center line of a vane slot is positioned at a predetermined interval closer to the vane slot than to an intersection between a center of an inner diameter of the cylinder and the center line of the vane slot. A proximal end of the suction port may be formed in the vicinity of the vane slot so as to advance a compression start angle of a compression space and reduce a dead volume between the vane slot and the suction port, thus improving compressor performance.

Abstract: A rotary engine includes a first transfer duct between a first rotor section and a second rotor section. A second transfer duct is between the second rotor section and the first rotor section. A supplemental compounding control valve selectively controls communication between the first transfer duct and the second transfer duct.

Abstract: A fluid machine includes a casing, a compression mechanism for compressing refrigerant, an expansion mechanism for expanding refrigerant, and a rotary shaft connecting the compression mechanism and the expansion mechanism. The compression mechanism, the expansion mechanism and the rotary shaft are disposed in the casing. A heat insulator partitions an internal space of the casing into a first space with the expansion mechanism disposed therein and a second space with the compression mechanism disposed therein. The rotary shaft passes through the heat insulator. An elastically deformable seal element seals a clearance between an outer periphery of the heat insulator and an inner periphery of the casing.

Abstract: A rotary positive displacement pump (1) includes an impeller (3) that defines, within a pumping chamber (20), a plurality of successive chambers (21) with variable volume through which a fluid is mechanically conveyed from an inlet (7) to an outlet (8). The chambers (21) with variable volume are defined, at axially opposite ends, by a pair of rotational surfaces (40, 50) that close the pumping chamber (20) and are arranged to rotate about mutually inclined axes. The invention also concerns the method of manufacturing the pump.

Abstract: A scroll compressor is provided which has favorable assembling property, does not require a thrust bearing, has a bearing structure for bearing a compression section at both sides thereof and has a simple structure of a scroll.

Abstract: A scroll compressor is provided which has favorable assembling property, does not require a thrust bearing, has a bearing structure for bearing a compression section at both sides thereof and has a simple structure of a scroll.

Abstract: A reciprocating part free kinematic apparatus, designed for transforming the volume variations of a plurality of chambers into a rotary motion of an axis, is characterized in that all the mechanism for performing this function is housed in a cylindric cavity coaxial with the driving axis, between the cylindric cavity, a smaller diameter inner coaxial cylinder and two discs perpendicular to the axis, being defined a toroidal cavity in which are housed rotary pistons, each longitudinally traversed by an axis and having a cross-section schematically in the shape of a circular sector, said rotary pistons rotating so as to cause the cavities defined therebetween, also of a substantially circular sector shape cross section, to cyclically change their volumes.

Abstract: A heat pump system, a method for adjusting a temperature of lubricating water in a heat pump system, and a method for operating a heat pump system, which suppress boiling of lubricating water for bearings and thereby minimize the deterioration in reliability of the bearings. A heat pump system comprising an evaporator 43 for generating steam, and a compressor 34 including a first stage 33 and second stage 32 as a plurality of compression mean for compressing the steam, wherein bearings 51 for supporting the compressor 34 are water bearings, and lubricating water in each of the water bearings 51 is controlled to a temperature less than a saturation temperature associated with an internal pressure of each water bearing 51.

Abstract: A rotary internal combustion engine has a shaft, a compression chamber, an ignition chamber, a center wall, a first rotor, and a second rotor. The shaft is fixed to the rotors while being rotatably mounted to the compression and ignition chambers. The compression chamber has an oval shaped chamber wall and receives fuel and compresses the fuel. The ignition chamber has an oval shaped chamber wall and receives compressed fuel from the compression chamber and combusts the compressed fuel. The center wall is located between the compression chamber and ignition chamber and allows passage of compressed fuel from the compression chamber to the ignition chamber. The first rotor has a circular perimeter surface and is rotatably received within the compression chamber. The second rotor has a circular perimeter surface and is rotatably received within the ignition chamber.

Abstract: There is provided a rotary compressor capable of preventing deterioration of performance following plug fixing carried out to prevent falling-off of a spring member. The rotary compressor comprises a cylinder constituting a rotary compression element, a roller engaged with an eccentric portion formed in a rotary shaft of an electric element, and eccentrically rotated in the cylinder, a vane abutted on the roller to divide an inside of the cylinder into a low pressure chamber side and a high pressure chamber side, a spring member for always pressing the vane to the roller side, a housing portion of the spring member, formed in the cylinder, and opened to the vane side and a hermetically sealed container side, a plug positioned in the hermetically sealed container side of the spring member, and inserted into the housing portion to fit into a gap, and an O ring attached around the plug to seal a part between the plug and the housing portion.

Abstract: A compression regenerative machine for a fuel cell according to the present invention comprises a displacement type compression mechanism portion C connected to an oxygen-containing gas supply side of a fuel cell F, and a displacement type regenerative mechanism portion E connected to an exhaust discharge side of the fuel cell F. A confined compression chamber 14 defined by the compression mechanism portion C and a confined regenerative chamber 24 defined by the regenerative mechanism portion E have a capacity ratio of 1.25 to 3.

Abstract: In a pump equipment having plural rotary pumps, the respective discharge ports of the rotary pumps are located at the points which are nearly symmetrical with respect to the center axis of the drive shaft to counterbalance each other the respective reaction forces against the drive shaft to be produced by the high pressure at the respective discharge ports. The respective discharge fluid conduits, in case of the first and second pumps, are located at the points which are opposite each other, more preferably, different at an angle of 180 degrees each other, with respect to the center axis of the drive shaft to limit the bending of the drive shaft. As a method for assembling the pump equipment, the peripheral border between respective cylindrical members piled up for constituting the casing is tentatively welded by laser beam at first and, then, all around the peripheral borders are finally welded.

Abstract: A hermetic compressor assembly having a housing and a pair of spaced apart main bearings, disposed within the housing, which subdivide the housing into first and second discharge chambers, and a suction chamber. The suction chamber is disposed between the pair of main bearings and first and second compressor mechanisms are disposed, respectively, in the discharge chambers. Each compressor mechanism has an outboard bearing, a cylinder block, which is disposed between the outboard and main bearings and defining a cylindrical cavity, a roller piston in the cylindrical cavity and a vane supported in the cylinder block and rotationally engaging the roller piston. At least one discharge opening is in fluid communication with the respective discharge chamber and a drive motor is disposed in the suction chamber. A drive shaft drivingly connects each roller piston to the motor. A suction port is disposed within at least one of the compressor mechanisms and extends through the respective main bearing.

Abstract: A high-performance compressor is capable of preventing inadequate oil feed even if the compressor tilts or foams and it is also capable of reducing the amount of oil discharged. The compressor has a compression element and an electric element housed in a hermetically sealed vessel, the interior of the hermetically sealed vessel being divided into an oil reservoir chamber and a hermetically sealed chamber. Two oil pumps are mounted on one end of a rotary shaft and oil is sucked into one of the oil pumps from the oil reservoir chamber and fed to the compression element mounted on the other end of the rotary shaft; oil is sucked into the other oil pump from the hermetically sealed chamber and fed to the oil reservoir chamber.

Abstract: A vacuum vane pump wherein one or more stages are installed in an annular extension of the casing for the pump motor. Each stage has a rotor which is driven by the motor shaft by way of an elastic key, and an annular housing which surrounds and is eccentric relative to the rotor. The housing is pivotable about a pintle which is installed in the end walls of the casing and is parallel to the motor shaft. The width of an annular clearance between the external surface of the housing and the internal surface of the extension can be varied by a radially disposed screw which is mounted in the extension diametrically opposite a spring-loaded abutment for the housing. The components of each stage are biased to predetermined axial positions by springs which react against the extension and bias one end wall of the casing against the adjacent housing and rotor, either directly or by way of a partition.

Abstract: An apparatus for quantatively extruding food material is provided. In this apparatus the material is introduced into a space formed between the periphery of a drum and the side wall of a housing. The space is divided into sections defined by flanges, and thus the material is divided into portions and introduced into each section. The drum has an inner chamber between its inner wall and the periphery of a cam. Blades are inserted into slits in the drum periphery, and adjacent pairs of blades form compartments in the sections in the outside of the drum as well as in the inner chamber.The apparatus has a plurality of exit ports communicating with the respective sections. Since the dimensions of the compartments in each section decrease toward the exit ports, while the dimensions of the compartment in the inner chamber increased, the pressure in the outer compartments becomes higher than that of the inner chamber.

Abstract: A hermetically sealed twin rotary compressor is disclosed wherein a pair of rotary vane compressors are synchronously, coaxially coupled to respective axial ends of a drive motor by a quill disposed in a rotatable rotor thereof. The rotary compressor crankshafts are coupled to the quill with their eccentric portion oriented opposite one another with respect to the axis of rotation. Counterbalancing weights are mounted to the motor end rings oppositely the adjacent eccentric portion with respect to the axis of rotation. A suction accumulator is provided having a pair of tubes extending from fluid outlets on the accumulator to respective fluid inlets associated with the pair of compressors. The tubes pass through a pair of spaced apertures in the housing and effectively mount the suction accumulator to the housing. A method of assembling the compressor assembly, including accumulator, is also disclosed.

Abstract: A rotary vane vacuum pump assembly is disclosed which is characterized by the absence of the discharge of lubricating oil with the exhaust airstream, and which includes an internal stator and a surrounding rotor. Pivotal vanes are mounted on the interior of the rotor, so as to define a plurality of air chambers which expand and contract as the rotor rotates about the stator. Also, a freely rotatably cylindrical sleeve is positioned between the stator and vanes, so that the relative sliding contact of the vanes on the surface of the sleeve is minimized, to thereby eliminate the need for internal oil lubrication. In one preferred embodiment, a hydraulic pump is joined to the vacuum pump to form a compact assembly, and wherein the hydraulic pump supplies oil to the bearings which mount the rotor.

Abstract: A vane motor is disclosed in which the volumetric displacement, torque, or speed are continuously adjustable. The vane motor includes a housing having a rotor and cam ring disposed axially around the rotor. The rotor includes vanes in radial slots which divide the motor between the rotor and cam rings. One cam ring is rotatable relative to the other so as to change volumetric displacement.

Abstract: A variable displacement vane pump includes a rotor (10) rotatably mounted in a casing (32). The casing (32) has a pair of relatively rotatable complementary cams (18,20). Each cam (18,20) has a surface shaped to provide an annular curvilinear track. The pump also has a first (14) and second (16) plurality of vanes slidably mounted upon the rotor (10). Each of the vanes (14,16) is sized and positioned to engage a corresponding cam (18,20). These vanes (14,16) are constrained in a radial direction by the cams (18,20) as the rotor (10) rotates. The vanes of the first (14) plurality engage one (18) of the cams, the other one (20) of the cams being engaged by the vanes of the second plurality (16).

Abstract: A heat pump unit comprising a compressor and an expansion machine for respectively compressing and re-expanding a medium which circulates in a heating or cooling circuit. The power used for compressing this medium is at least partly recovered in the expansion machine and is used for driving the compressor. The compressor and the expansion machine are inner axle, intermeshing rotary piston engines which are arranged directly adjacent to one another on a common shaft. The inner side walls of the rotary engines are adjacent to each other and have cavities and thermal insulating means interposed between them and, while being interconnected, are fixedly connected on the one hand to the shaft and on the other hand with outer rotors. The shaft is rotatably journalled in eccentrics of inner rotors, which eccentrics are rigidly connected with a stationary housing.

Abstract: A hydroturbine engine device having a plurality of notched discs mounted within a high pressure fluid chamber. A high pressure oil input is provided along the edges of said discs at one portion of the unit and an outlet for the spent oil is provided downstream thereof and adjacent thereto. The discs are keyed to a center driven shaft for connection to a work output. The turbine engine is connected to a high pressure oil pumping unit which supplies oil at high pressure to the input of said turbine engine. The turbine engine is also connected to an electrical alternator which in turn is connected to a storage battery through a voltage regulator system. The storage battery is used to at least partially drive the electric motor for the hydraulic oil pump. Thus, a portion of the energy output of the turbine engine is utilized in a feedback system for the oil pump to partially supply the source of hydraulic oil pressure for the turbine engine.

Abstract: A vaned hydraulic motor which includes a rotor adapted to rotate in excess of 180.degree. with respect to the stator, has, in an axial juxtaposition, a middle circumference annular chamber and two outer circumferential annular chambers flanking the middle annular chamber. The axial width dimension of each of the outer annular chambers is one half of the axial width dimension of the middle annular chamber. In each annular chamber there are disposed first and second radial partitions forming a separate partition pair for subdividing each annular chamber into two pressure chambers. The first partition of each pair is affixed to the stator and the second partition of each pair is affixed to the rotor. Further, the second partition in the middle annular chamber is offset 180.degree. with respect to the second partition in each outer annular chamber.

Abstract: An orbital rotary piston-type internal combustion engine in which a series of pistons are mounted for co-operation on a pair of rotors which are carried on a drive shaft and travel in an annular combustion chamber, with associated pre-combustion chambers which are charged with rich fuel-air mixture while the annular combustion chamber is charged with a relatively lean fuel-air mixture, the mixture in the pre-combustion chambers being ignited by primary spark plugs and the expanding gas being forced through ports into the annular combustion chamber where secondary spark plugs adjacent the ports assist in more complete combustion and help force the pistons past exhaust ports, and with a variable ratio, overriding clutch-bearing for transmitting power from the rotors to the drive shaft, a solid state ignition system, a pressurized fuel injection system, a drive shaft mounted timing system and an electromagnetic controlled starting device, the disengagement of the latter being effected by means of an engine veloc

Abstract: Apparatus for connecting motors in tandem and particularly in vertical alignment includes a coupling for connecting the lower end of the shaft of the upper motor to the upper end of the shaft of the lower motor. A tubular member surrounds the coupling with its upper end extending into the outer housing of the upper motor and its lower end threaded into the outer housing of the lower motor. A lock ring surrounds the tubular member and has a keyed connection with the outer housing of the lower motor. The upper end of the lock ring and the lower end of the outer housing preferably have ten equally spaced keyways therein. A key extends into a pair of matching keyways of the lock ring and upper outer housing and screws hold the keys in place by passing through aligned holes in the lock ring and upper outer housing into threaded holes in the tubular member.

Abstract: An oil hydraulic motor is provided with a casing in which a rotor is disposed in an eccentric position. An oil having a preselected pressure is sealed in the chambers defined between the rotor and the inner wall surfaces of the chambers and a high pressure is intermittently propagated into said chambers from a high pressure generating device with which it is in communication thereby rotating said rotor to develop an output.