Abstract: A pump includes a rotor and a pump housing. The rotor is rotatable about a rotation axis and comprises a rotor hub and a rotor collar. The rotor collar extends from the rotor hub in the radial direction and encircles the rotor hub in an undulating manner. The pump housing comprises a first axial housing component, a central annular housing component, and a second axial housing component. A pump duct is formed (i) in the axial direction by the first and second housing components and (ii) in the radial direction by the central annular housing component and the rotor.

Abstract: A pump includes a rotor, a pump housing, and a blocking device. The rotor is rotatable about a rotation axis and comprises a rotor hub and a rotor collar that extends from the rotor hub in a radial direction and encircles the rotor hub in an undulating manner. The pump housing forms a pump duct with the rotor. The pump duct connects a first inlet/outlet space to a second inlet/outlet space. The blocking device is arranged between the first and second inlet/outlet spaces and comprises a blocking element that blocks the pump duct in an axial direction on both sides of the rotor collar. The blocking device has first and second seats for the blocking element. A spacing between the first and second seats in a circumferential direction is greater than the spacing between first and second contacting faces of the blocking element in the circumferential direction.

Abstract: An apparatus for compressing or pumping fluid includes a housing having an interior chamber. The housing includes an end wall having a fluid inlet and a fluid outlet. A rotating cam is rotatably mounted within the interior chamber and includes a cam body having an end with a sloped annular channel formed therein. The apparatus also includes am end vane slidably mounted within a slot in the end wall so as to extend into the sloped annular channel for sliding therein as the rotating cam rotates. The end vane divides the sloped annular channel into an inlet chamber and an outlet chamber such that, as the rotating cam rotates, the inlet chamber expands and communicates with the fluid inlet for receiving the fluid, and the outlet chamber contracts and communicates with the fluid outlet for expelling the fluid.

Abstract: A rotary displacement pump of an undulatory disk type; with a pump housing (24) comprising a front end plate (56) and a rear end plate, the pump housing enclosing a stator (40, 48), a rotor (42), a scraper (44) and a scraper guide (46), a shaft (8) extending through at least the rear end plate; the stator including a generally semi-circular arc-formed first stator member (40) and a generally semi-circular arc-formed second stator member (48), the stator, the pump housing and the scraper together with the scraper guide defining an inlet and outlet chamber, wherein at least part of the end faces of the first and second stator members being situated in the outlet chamber are oblique so as to provide an obtuse-angled transition to the inner faces of the front end plate and the rear end plate.

Abstract: A rotary displacement pump includes a stator (42) fixed in a housing (20), a rotor including a shaft portion (8), a radially protruding web (12), a scraper (110) having an engagement slot (112) engaging the protruding web (12). A guide (92) retains the scraper (110) in a circumferential direction and allows the scraper (110) to move reciprocatingly in a substantially axial direction. The stator (42) includes first and second members that abut each other in abutment areas having a circular arc configuration.

Abstract: A rotary displacement pump includes a stator (42) fixed in a housing (20), a rotor including a shaft portion (8), a radially protruding web (12), a scraper (110) having an engagement slot (112) engaging the protruding web (12). A guide (92) retains the scraper (110) in a circumferential direction and allows the scraper (110) to move reciprocatingly in a substantially axial direction. The scraper includes first, second and third grooves (120, 124 and 127). The grooves are designed so that they accommodate a portion of the guide (92) and allow the reciprocating movement of the scraper (110).

Abstract: A complex fluid machine (100) comprises a compressor device (110) for a refrigerating cycle (20) and an expansion device (120) for Rankine cycle (30) to collect waste heat from an engine (10) and convert into a rotational force, wherein the compressor device (110) and the expansion device (120) are arranged in a fluid machine housing (111, 101c, 121), but those devices (110, 120) are operatively independent from each other. The compressor and expansion devices (110, 120) are formed as scroll type devices, and each of the fixed scroll wraps (112b, 122b) are formed at a common base plate (101) and extend in opposite directions.

Abstract: A vane supporting apparatus for a hermetic compressor elastically supports vanes contacting to both cam faces of a dividing plate with thin torsion coil springs, and forms curved surface portions on upper ends of the vanes where the torsion coil springs are contacted, and thereby, height of the supporting apparatus supporting the respective vanes is reduced to miniaturize the compressor, and also, to prevent contacted portions between the vanes and the torsion coil springs from being worn away.

Abstract: A structure for reducing a refrigerant flow loss in a compressor includes a refrigerant flow resistance reducing unit to reduce a refrigerant channel resistance at a lower surface of a rotor facing a compression mechanism unit. When the high temperature and high pressure refrigerant gas discharged from the compression mechanism unit flows to the discharge pipe through the refrigerant passage including the gap between the rotor and the stator of the electric mechanism unit, the flow resistance of the refrigerant gas is reduced. Therefore, since the refrigerant can flow smoothly, a flow loss of the refrigerant can be reduced and, as a noise generation is reduced, a reliability can be heightened.

Abstract: A compressor is provided which minimizes impact noise and abrasion between a Z-plate of the compressor and vanes formed in the compressor. Ends of the vanes formed in the compressor contact sides of the Z-plate, and the motion and surface configuration of the Z-plate cause the vanes to move reciprocally and to section compression spaces within the compressor into a suction area and a compression area. Due to the curvature of the surfaces of the Z-plate, the vanes remain in constant contact with the surface of the Z-plate, which allows for smooth transition phases and a subsequent reduction in impact noise and abrasion between the vanes and the Z-plate.

Abstract: A compressor comprising a hermetic casing, a cylinder assembly disposed in the casing, a Z-plate disposed in the cylinder assembly for dividing an inner space of the cylinder assembly into a plurality of compression spaces, and sucking, compressing and discharging a fluid while being rotated by a driving unit, and vanes being contacted with both sides of the Z-plate to make a reciprocal movement, wherein the cylinder assembly includes a vane slot for inserting the vane, said vane slot having an opened portion opened towards an outer circumference of the cylinder assembly, thereby facilitating a processing of the vane slot, enhancing productivity of the cylinder assembly and reducing a production cost.

Abstract: A discharge part structure of a compressor is disclosed. In the compressor comprising a cylinder assembly having a suction flow path and a discharge flow path, a Z-plate in the cylinder assembly for dividing an inner space into a plurality of compression spaces and for making a fluid be sucked, compressed, and discharged by being rotated by a motor unit, and vanes contacted to both sides of the Z-plate for dividing the respective compression spaces into a suction region and a compression region by reciprocation, an oil filtering space or a buffering space having a predetermined volume is formed at an outer side of a discharge flow path of the cylinder assembly. According to this, oil mixed with a fluid can be efficiently separated when the fluid is discharged, and vibration noise can be minimized.

Abstract: A structure for reducing a refrigerant flow loss in a compressor includes a refrigerant flow resistance reducing unit to reduce a refrigerant channel resistance at a lower surface of a rotor facing a compression mechanism unit. When the high temperature and high pressure refrigerant gas discharged from the compression mechanism unit flows to the discharge pipe through the refrigerant passage including the gap between the rotor and the stator of the electric mechanism unit, the flow resistance of the refrigerant gas is reduced. Therefore, since the refrigerant can flow smoothly, a flow loss of the refrigerant can be reduced and, as a noise generation is reduced, a reliability can be heightened.

Abstract: A compressor having cylindrical shape vanes, in which the compressor comprises a cylinder assembly having a suction flow path and a discharge flow path connected to an inner space and having vane insertion holes penetrated as a circular shape at upper and lower surfaces thereof; a Z-plate for dividing the inner space into a plurality of compression spaces in the cylinder assembly and for making a fluid be sucked, compressed, and discharged by being rotated by a motor unit; and cylindrical shape vanes inserted to the vane insertion holes and contacted with both sides of the Z-plate for dividing the respective compression spaces into a suction region and a compression region by a reciprocal movement. In the compressor having cylindrical shape vanes, vanes are smoothly operated, a process for construction components is simplified, and its construction components are simple, thereby enhancing a reliability of a driving and enhancing its assembly productivity.

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: The pump (20) has a rotor (80) rotatable by a drive in a pump duct (25). The rotor (80) has a pump element (90) with undulating boundary faces extending radially. The boundary faces are bounded cylindrically and run in a fitted manner in a cylindrical conveying region (27), their highest points running adjacent to the end faces (35) of the pump duct in a sealed manner. In addition, a sealing slide (31) is provided, which is displaceable parallel to the axis of rotation (76) and which seals off the pump duct (25) between the inlet (22) and the outlet (23), so that during rotation the rotor (80) follows the undulating movement of the boundary faces (96) of the pump element (90). In addition, sealing means seal off the media-conveying pump chambers from the housing (21). The rotor (80) is detachably connected to the drive shaft (180) while forming connecting boundary faces, which are arranged on the drive side on the other side of the sealing means with respect to the media-conveying pump chambers.

Abstract: A pump comprises a pump casing having a pump channel, a pump element rotating in the pump channel, and a rotor shaft mounted in the pump casing and attached to the pump element. The pump element has a cylindrical outer periphery, and undulating surfaces in the axial direction. The opening in the casing which receives the rotor shaft has an annular groove in which there is disposed a spring loaded sealing element which bears slidably against a flat end face of the pump element when the pump element rotates. The sealing element is subjected to the pressure of superheated steam which is conducted to the sealing element via pressure channels in the pump casing connected to the annular groove. The rotor shaft includes radial and axial channels through which a coolant flows.

Abstract: A rotary compressor, more particularly, a positive cam type compressor wherein a movable isolator plate is driven by a positive cam. The positive cam has a helically twisted disk portion, and is fitted in a cylinder slidably. The cylinder cavity is divided into operating compartments in which suction and compression processes are performed alternately, when the positive cam is rotated by a driver shaft. The positive cam and the isolator plate form a sliding pair, so that the plate can be reciprocatively moved when the cam rotates. The circulation of lubricating oil is positively effected by the reciprocating motion of the isolator plate.Thus, there can be provided a considerably small and light compressor that is constructed with relatively smaller number of parts. Furthermore, the compressor of the present invention may have good characteristics of vibration and noise. The above compressor is suitable to an air conditioner for vehicle.

Abstract: Rotary apparatus for compressing and discharging fluid within a container. The apparatus includes an oscillating rotor or cam-like projection of substantially constant thickness in the plane of the longitudinal axis of the housing which cooperates with a sliding partition to define multiple compartments into which fluid is introduced during a portion of the rotation of the rotor or projection and is compressed during another portion of rotation of the rotor or projection.