Abstract: An electrically driven rotary piston machine which operates as a rotary piston pump or rotary piston compressor wherein the rotary piston machine has a basic housing, which holds an electrical coil and pump head, wherein the pump working space is preferably bounded by a trochoid toothing of the rotors. The pump head which can usually be manufactured relatively economically is embodied as a disposable part and therefore has a quick-action connection with the more complex basic housing.

Abstract: A dual-powered airflow generator comprising: a primary fan motor powered from a primary power source and an auxiliary fan motor powered from a secondary power source. In one embodiment, the primary fan motor has a first drive shaft wherein operation of the primary fan motor causes a desired airflow at a design power of the primary power source. In a preferred embodiment, the auxiliary fan motor is powered from a secondary power source and has a second drive shaft mechanically coupled to the primary fan motor, wherein the auxiliary fan motor is configured to assist the primary fan motor in causing the desired airflow while the primary fan motor operates from the primary power source at a reduced power. In a preferred embodiment, the auxiliary fan motor is powered by a solar power generating device or other alternative energy source.

Abstract: In a fuel pump in the form of a side-channel pump for a motor vehicle two partially annular ducts (21, 22) concentrically enclosing one another are connected to one another via a connecting duct (29). Connections (33, 34) of the connecting duct (29) to the partially annular ducts (21, 22) are laid so that at a rated speed of the fuel pump the same pressure prevails in each of them. If the speed falls below the rated speed, fuel passes from the radially outer, partially annular duct (22) into the radially inner, partially annular duct (21). A sufficient delivery capacity through the radially inner, partially annular duct (21) is thereby ensured.

Abstract: A rotary pump including an impeller rotatable within a housing. A load is imposed on the impeller as it rotates, in a direction that is substantially parallel to the axis of rotation and wherein the load stabilises the motion of the impeller. The load may be achieved by magnetically biasing the impeller.

Abstract: A turbo pump for evacuating a process chamber minimizes the amount time necessary to reduce the speed of the rotor in preparation for performing maintenance in the process chamber or the like. The turbo pump includes a housing communicating with the reaction chamber, a plurality of fixed stator rings spaced from one another along an inner peripheral surface of the housing, a shaft supported for rotation in the housing, a stator base surrounding the shaft and having an electric coil, a plurality of rotor blades each extending between an adjacent pair of the stator rings, and an electrode disposed at an outer peripheral surface of the housing. The electrode can receive an electric charge opposite to that applied to the rotor to forcibly stop the rotation of the rotor. Also, an electrical contact can be conductively connected to the rotor.

Abstract: An enhanced pump assembly includes an impeller and volute casing designed to provide high operating pressures (“P”) and flow rates (“Q”) with low energy usage. The impeller has a central shaft carrying radially projecting curved primary vanes, and each primary vane also has a twist in the radial direction. Secondary impeller vanes define triangular connecting fillet-like wall segments connecting each primary vane to the impeller shaft. The casing of the pump has a slight spiral deviation so that the pump chamber's radial sidewall flares away from the swept area of the impeller's vanes to define a fluid outlet that contributes to higher P-Q performance, especially when pumping colder fluids.

Abstract: This fan (1) includes a volute (2) whose inlet opening (3) is in communication with the oxygen feed line, an impeller (4) situated immediately downstream of the inlet opening of the volute and including an inlet opening connected to this inlet opening (3) of the volute and outlet orifices (4a) emerging into the volute (2), and an electric motor (5) for rotating the impeller (4). The fan (1) includes: —a compartment (6) in which the motor (5) and, where appropriate, other electric elements or components belonging to the fan (1) are placed, this compartment (6) including an end wall (13) traversed by the shaft of the motor (5) and being supplied with pressurized air, and—a leak collection chamber (7) situated intermediately between the volute (2) and the compartment (6), this chamber likewise being traversed by the shaft of the motor (5) and including a discharge orifice (20).

Abstract: A centrifugal blower includes a housing, a stator and a rotor. The housing includes a base plate defining an air inlet therein and a sidewall extending upwardly from a periphery of the base plate. The sidewall defines an air outlet therein. The base plate includes a supporting portion disposed in the air inlet. The supporting portion protrudes downwardly beyond a bottom surface of the base plate and connects with the base plate via a plurality of ribs extending radially outwardly and upwardly from a periphery of the supporting portion toward the base plate. The stator is mounted on the supporting portion and the rotor is rotatably disposed around the stator.

Abstract: A magnetic induction pump for pumping molten metal. The pump includes a motor and a shaft operatively connected to the motor. The pump further includes at least one bipolar permanent magnet operatively connected to the shaft and a conduit for the passage of molten metal. The motor rotates the shaft and magnet about the conduit inducing eddy currents in the molten metal in the conduit which react with the moving magnetic field to produce force to pump the metal through the conduit with the metal coming into contact with only an interior surface of the conduit.

Abstract: A blower housing may be used with a climate control furnace or with a water heater and provides cooling of the motor that rotates the blower fan and also provides dilution and cooling of exhaust gases drawn from the furnace or water heater. The housing is constructed with one side that is positioned in a single plane that is easily mounted to a flat surface of the furnace or water heater and can be sealed against the surface. The housing is provided with an interior heat shield that insulates the exterior surface of the housing and with a noise muffler.

Abstract: A rotary blood pump may include one or more motor stators overlying exterior surfaces of a wall defining a pumping chamber. A rotatable impeller within the pumping chamber may have a hydrodynamic thrust bearing surface adapted to constrain a position of the impeller along an axis of rotation relative to the wall when the impeller is rotating about the axis of rotation. The impeller position may then be constrained without requiring a constant polarity magnetic force to be applied in the axial direction from a fixed position of the housing.

Abstract: A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor.

Abstract: A rotary blood pump is provided which includes a pump housing and a rotor mounted for rotation with the housing. The rotor has an impeller. A rotor motor is provided including a plurality of permanent magnets carried by the impeller. A first motor stator is positioned on one side of the impeller and a second motor stator is positioned on an opposite side of the impeller. The motor stators each include a plurality of electrically conductive coils and pole pieces located within the housing. A plurality of wedge-shaped hydrodynamic thrust bearings are located outside of the axis of the rotor. During rotation of the impeller, the hydrodynamic bearings are separated from the housing by a fluid film and are not in direct mechanical contact with the housing.

Abstract: A compressor unit including a centrifugal compressor for compressing a gas and an electric motor with a stator and a rotor for driving the compressor. The compressor and the electric motor are accommodated in a common gastight housing, provided with a gas inlet and a gas outlet. The stator is accommodated in a separate stator space which is delimited by a wall section, surrounding the stator, of the housing, a gastight partition which extends freely between the stator and the rotor of the electric motor, and at least one end wall which extends between the partition and the housing of the compressor unit. The partition is of a material of such high strength that it remains clear of the stator and the rotor under working pressures of the gas.

Abstract: An electrical submersible pump assembly has a pump discharge head with an integrally formed pump discharge pressure port. The discharge head is mounted directly to the pump and couples the pump to production tubing. A static pressure port extends directly through the side wall of the discharge head. The pressure port includes a tubing connector for hydraulic tubing to run down to the guage. Inside the discharge head, a flow limiter is located in the pressure port to stop the loss of fluid if there is a break in the tubing connector or hydraulic line. Alternatively, the discharge head may incorporate a venturi or other pressure drop structure to allow the fluid flow to be measured via a pressure drop across an orifice. The venturi may be configured as an insert to permit it to be replaced after it has become worn by abrasive flow.

Abstract: The present invention is directed to an analyzer for measuring the vapor pressure of a hydrocarbon liquid. The analyzer includes a pressure measuring system connected to an air saturation system having a circulation chamber with opposing first and second ends. A first opening is disposed toward the first end and a second opening is disposed toward the second end. A plumbing system connects the first and second openings. A pump moves the hydrocarbon liquid through the plumbing system from the first opening to the second opening so as to saturate the hydrocarbon liquid with air. The air saturation system has a cooler for cooling the hydrocarbon liquid and the pressure measuring system has a heater for heating the hydrocarbon liquid. The pump may be a piston actuated pump or a motor-driven pump and the plumbing system may include an aeration chamber.

Abstract: A supercharger with an electric motor includes, a turbine impeller rotationally driven by an exhaust gas, a compressor impeller rotationally driven by rotation of the turbine impeller, a compressor housing accommodating the compressor impeller, a turbine housing accommodating the turbine impeller, a shaft coupling the turbine impeller and the compressor impeller, a bearing housing rotatably supporting the shaft, an electric motor accommodated in an inside of the bearing housing for assisting rotation of the turbine impeller, and a power supply line extending from an inside to an outside of the bearing housing. The power supply line has one end portion connected to the electric motor, and the other end portion connected to a connector that receives electric power. The connector is installed at a position that is away from a side of the turbine impeller, and is less affected by heat of the exhaust gas.

Abstract: A groundwater sampling and pumping device and system for withdrawing groundwater from a well of small size, not exceeding 1.5 inches I.D. The device includes a hollow outer housing having water inlet ports formed through a bottom thereof and a hollow inner housing sized to be positioned integrally within the outer housing and defining a water flow passage therebetween. An electric motor in the inner housing is connected to a water impeller operably positioned to draw groundwater into the water passage. The water passing upwardly through the water flow passage provides cooling for the motor. Preferably the housing is formed of a polymer material, and/or a metal, such as stainless steel.

Abstract: An exemplary embodiment of an air blower includes an electrically powered motor including a motor housing. A blower housing has first and second housing structures, each having inwardly facing, spaced ribs, and configured to surround the motor assembly in an assembled configuration. The ribs on the first and second housing structures register the radial and axial position of the motor housing inside the housing.

Abstract: A hydrogen recirculation blower for a fuel cell vehicle includes an ejector integrated with a housing of the blower. An integrated hydrogen recirculation blower for a fuel cell vehicle includes: a blower housing including an inlet and an outlet formed on a top surface thereof; an impeller rotatably installed inside the blower housing; a motor connected to a rear end of the impeller to rotate the impeller; and an ejector formed integrally on a upper surface of the blower housing.

Abstract: A cooling device has a closed circulating channel for circulating coolant, and in the channel, a radiator and a contact-heat-exchanger type centrifugal pump are provided. A heat-producing electronic component contacts with the centrifugal pump, and the coolant in the pump collects the heat off the component due to the heat exchanging function. Then the heat is dissipated from the radiator. The pump includes a pump-casing made of highly heat conductive material and an impeller. The pump casing has a base wall and a cover wall opposite the base wall. The base wall has an outer wall face constituting a heat-receiving face, and an inner wall face facing the impeller. The impeller is disposed in a pump room defined between the base wall and cover wall of the casing. A sucking channel is provided between the heat-receiving face and an inner wall face of the pump room. This inner wall has a recess where protrusions extending toward the impeller or dimples are provided.

Abstract: A fan for cooling a circuit board (26) has a fan wheel (10; 10?) that is adapted for rotation about a rotation axis (11) and in a predetermined rotation direction (14), and an outer wall (18) that is rigidly joined to an inner wall (16). Defined between the two walls (16, 18) are curved air-directing conduits (39) that extend from an axial air entrance opening (40) to a radial air exit opening (42). The axial air entrance opening (40) is at a lesser distance from the rotation axis than the radial air exit opening (42), and the air-directing conduits (39) are separated from one another by air-directing blades (30, 32, 34, 36, 38) that each extend, oppositely to the predetermined rotation direction (14), from a point between two adjacent air entrance openings (40) to a point between two adjacent air exit openings (42).

Abstract: A seal mechanism (10) can reduce noise during operation. The seal mechanism (10) is used for a fluid machine (P) to prevent a fluid from leaking out of a high-pressure space (H) into a low-pressure space (L) in the fluid machine (P). The seal mechanism (10) has an annular seal member (12) movable in a radial direction and a housing (11) disposed between a body (23) of the fluid machine (P) and a rotatable member (22) located inside the body (23) of the fluid machine (P) so as to receive the annular seal member (12). The annular seal member (12) has a first surface (12a) on a side of the low-pressure space (L) in the fluid machine (P). The housing (11) has a second surface (11c) facing the first surface (12a) of the annular seal member (12). The seal mechanism (10) has one or more passages (15) formed in the first surface (12a) and/or the second surface (11c).

Abstract: A blower providing a blower mode and a vacuum mode. A casing provides a motor housing installing a motor and a fan housing installing a centrifugal fan rotationally driven by the motor. A partition is disposed and having a first surface defining a motor housing and second surface defining a fan housing. The fan includes a generally circular base plate having one surface in direct confrontation with the second surface. A plurality of base plate through-holes arrayed in an imaginary circle whose center is coincident with the rotation axis of the fan are formed in the base plate. The partition is formed with a plurality of partition through-holes arrayed in the imaginary circle and in selective alignment with the base plate through-holes in accordance with the rotation of the centrifugal fan. Each partition through-hole includes a width increasing region where a width of the partition through-hole in the circumferential direction is gradually increased toward the second surface.

Abstract: There is provided an external inline LPG fuel pump, and more particularly, an external inline LPG fuel pump; in which bushings are installed at first and second shafts of a motor to be fixed inside a housing, a ball is completely coupled to an end of the first shaft to prevent the motor from being shaken due to the bushings, and another ball is inserted into an end of the second shaft to fix the motor, thereby preventing the durability of the fuel pump from deteriorating by wear of a bushing part, a pumping part and an inside of the housing even though an LPG fuel is introduced when the motor is driven, prolonging the life of the fuel pump and reducing the repair and exchange costs involved with the fuel pump; in which a case inside which the housing is positioned is formed and a partition is installed inside the case, thereby cooling the high-temperature LPG fuel discharged through an outlet of the housing to reduce heat load and improving the durability of a device receiving the LPG fuel transferred from th

Abstract: One aspect of an intravascular ventricular assist device is an implantable blood pump where the pump includes a housing defining a bore having an axis, one or more rotors disposed within the bore, each rotor including a plurality of magnetic poles, and one or more stators surrounding the bore for providing a magnetic field within the bore to induce rotation of each of the one or more rotors. Another aspect of the invention includes methods of providing cardiac assistance to a mammalian subject as, for example, a human. Further aspects of the invention include rotor bodies having helical channels formed longitudinally along the length of the body of the rotor where each helical channel is formed between peripheral support surface areas facing radially outwardly and extending generally in circumferential directions around the rotational axis of the rotor.

Abstract: A liquid pump has an annular stator having wire windings that extend around a generally tubular central opening. An inner housing made of a non-ferrous material has an inner opening, an input end, and an output end such that liquid can enter the input end, pass through the inner opening and exit through the output end. A portion of the housing extends through the central opening of the stator and a brushless rotor mounted on a shaft is positioned entirely within the housing to thereby seal the shaft from leakage. A drive attached to the shaft urges the liquid from the input end of the housing to the output.

Abstract: A method to manufacture a secondary air pump for a motor vehicle with an internal combustion engine, wherein the air pump features a housing, in which a pump mechanism with at least one fan wheel as well as an electric motor driving the at least one fan wheel are arranged. The air pump is counterbalanced with the electric motor built into the housing via balancing in at least two planes that are spaced apart axially.

Abstract: In a blade shape creation program and method, a camber line defining equation for defining a camber line to be defined on a cross section of a blade shape is constructed by a cubic function as a first function defining a leading edge camber line on a leading edge side of a maximum camber point on the camber line, and a cubic function as a second function defining a trailing edge camber line on a trailing edge side of the maximum camber point on the camber line; is defined, with a chord length, a position of maximum camber, a maximum camber value, an inflow angle, and a discharge angle of the camber line being taken as design factors; and has the boundary condition that the first function and the second function have tangents continuous with each other at the maximum camber point.

Abstract: A fan assembly for creating an air current includes a bladeless fan assembly including a nozzle and a device for creating an air flow through the nozzle. The nozzle includes an interior passage and a mouth receiving the air flow from the interior passage. A Coanda surface located adjacent the mouth and over which the mouth is arranged to direct the air flow. The fan provides an arrangement producing an air current and a flow of cooling air created without requiring a bladed fan, that is, the air flow is created by a bladeless fan.

Abstract: A plurality of curved rectangular blades are arranged in a circumferential direction on a periphery of a disc, forming a pipe-like basket shape with an opening on a front side of the disc. Rotation of the disc draws in air from the opening and draws out the air in a centrifugal direction through a space between the blades. The blades are formed of a thick plate part close to the disc and a thin plate part that is thinner than the thick plate part and farther than the thick plate part from the disc. A bulge serving as a boundary between the thick plate part and the thin plate part is formed on a negative pressure surface of the blades, which is of curved convex shape.

Abstract: A drive device (2) for the oil pump (6) of a motor vehicle automatic transmission, in which the oil pump (6) on the one hand can be coupled to the drive motor by way of an overrunning clutch (34) and on the other hand is drivingly connected to an auxiliary electric motor (22), which is powered by the on-board power supply of the motor vehicle. The electric motor (22) is arranged outside of the pump housing (8) and is drivingly connected to a driven pump impeller wheel (ring gear 10) that is arranged in the pump housing via a non-rotatable connection.

Abstract: A power blower has a body having a fan housing for accommodating a fan, the fan housing having an upper portion, a lower portion opposite to the upper portion, and a pair of support portions extending from the upper portion. A driving machine is mounted to the fan housing for driving the fan. A discharge duct is mounted to the fan housing for discharging a current of air produced by driving of the fan. A pair of legs is disposed at the lower portion of the fan housing to enable the body to stand alone on a surface. A main handle having a structure separate and independent from the fan housing is removably connected to the pair of support portions of the fan housing. An auxiliary handle is integrally formed with and disposed between the pair of legs. The auxiliary handle has a holding edge aligned with a central extension line of the main handle.

Abstract: A centrifugal fan includes a plurality of blades, a first wall disposed at first axial ends of the blades, and a second wall disposed at second axial ends of the blades and having a shaft portion at a center. At least one of the first wall and the second wall has a cutout portion configured to control balance.

Abstract: A device for axially conveying fluids, wherein the conveyor part thereof is entirely magnetically borne and the radial bearing thereof is provided with sufficient rigidity and efficiently dampened, whereby problems encountered when passing through critical speeds and the disadvantageous effects of hydrodynamic and mechanical imbalance of the rotor are avoided. The magnetic bearing is combined with a hydrodynamic bearing.

Abstract: A blower system including an air guide having at least one edge where the air guide defines a central opening. The blower system includes a power source connected to the air guide and a fan positioned in the opening and connected to the power source. The fan includes a plurality of blades having a designated height and is positioned in the opening so that at least two-thirds of the height of the blades extends beyond the edge of the air guide.

Abstract: A compressor housing for accommodating a compressor wheel comprises an inlet and an outlet, each being defined by a wall provided integrally with said compressor housing, wherein at least one acoustic damper element is disposed on the outside of at least one of said walls of the inlet and the outlet. Preferably, the acoustic damper element is integrally formed with the compressor housing by die casting. A compressor or a turbocharger can be equipped with the compressor housing.

Abstract: A turbocharger includes a turbine wheel, a compressor wheel connected thereto, an electric motor situated on the side of the compressor wheel which is distant to the turbine wheel, and a rotor connected to the compressor wheel in a rotationally fixed manner and designed in a freely projecting manner. A drive system for motor vehicles includes a turbocharger. The turbocharger is characterised by a very spontaneous response behaviour, as well as the possibility for energy recovery.

Abstract: An axial flow pump (10) is presented which includes a housing (1) with an inlet (2) and outlet (3) and a magnetically active rotor (5) in the housing which is provided with a passage (6) in the interior and with at least one spiral-shaped vane (7) in the passage, wherein the pitch of the vane (7) varies in the axial direction. The axial flow pump (10) furthermore includes an electromagnetic drive (4, 8) with a stator (8) which is arranged at the housing and cooperates with a magnetically active rotor.

Abstract: A radial fan includes an integrated circuit which is conductively connected to a printed circuit board to control a motor. The flow of air provided by a cooling impeller is conveyed directly to the integrated circuit to cool the integrated circuit during operation of the radial fan.

Abstract: A device for use in a molten metal pump helps alleviate jams between a rotating rotor and stationary inlet. The device includes an inlet structure including one or more openings and a displacement structure that preferably includes one or more rotor blades. The inlet structure and displacement structure are connected to one another (preferably, but not necessarily, as a unitary piece), thus enabling them both to rotate. A pump including the device is also enclosed. The invention further includes a bearing surface for an impeller or for a device according to the invention, wherein the bearing surface includes grooves that help reduce molten metal build up between the bearing surface of the impeller or device and the bearing surface of a pump chamber.

Abstract: A hydrocarbon well pump has impellers and diffusers configured with inner and outer sections. The central section contains impeller passages configured for pumping liquid. The outer section contains turbine blades for compressing gas. A cylindrical sidewall separates the two sections. A driven shaft rotates the central and outer sections in unison.

Abstract: A hermetic type compressor including balance weights installed on a rotor so as to compensate for rotating unbalance of a rotary shaft, thereby reducing a level of noise. The hermetic type compressor has a compressing unit, which compresses a refrigerant, a driving unit, which provides driving force to compress the refrigerant, a stator, a rotor that rotates in electromagnetic interaction with the stator, and a rotary shaft, which is press-fit into a center of the rotor so as to transmit the driving force of the driving unit to the compressing unit, and has an eccentric part on one end thereof. The rotor has balance weights so as to compensate for rotating unbalance of the rotary shaft caused by the eccentric part on upper and lower ends thereof, where each balance weight has a shape of a ring, part of which has at least a hollow space.

Abstract: A fluid transfer systems described herein. The fluid transfer system generally includes a centrifugal multistage pump, a holding tank for holding the fluid operably connected to the pump body via a first conduit, an inlet for receiving the fluid, wherein the fluid is pressurized to form the pressurized fluid, a manifold for passing the pressurized fluid to a second location and an outlet for receiving fluid operably connected to the manifold.

Abstract: An integrated motor pump for use in medical devices and the like.

Abstract: A fan apparatus includes a casing and a fan unit. The casing is a hollow member having an inlet and an outlet. The fan unit has an inlet and an outlet, and includes a plurality of axial fans. The fan unit is disposed on the inside of the casing, and the inlet of the fan unit is disposed in the vicinity of the inlet of the casing. The position of the fan unit within the casing can be varied in order to alter the air flow and static pressure of the air discharged by the fan apparatus.

Abstract: The present invention is an apparatus and method for controlling a process flow rate and a pressure in a vacuum process chamber that is evacuated by a turbomolecular pump. A throttle valve between the pump and the process chamber is controlled to regulate the pressure and flow rate. A backing valve downstream of the pump is also controlled to maintain the setting of the throttle valve within a preferred, stable operating range.

Abstract: A pump for moving a liquid including a rotor rotatable within a housing and slidable relative to the housing between a first axial rotor position during normal pump operation and a second axial rotor position during a pump inoperative condition.

Abstract: A cooling fan module for a motor vehicle has a first fan motor which is used to drive a first cooling fan and a second fan motor which is used to drive a second cooling fan. A control unit (6, 13) is associated with the first fan motor (2, 11), which operates the first fan motor (2, 11) and the second fan motor (4, 12, 23) simultaneously, in order to provide an economical and compact technical solution for the cooling fan.

Abstract: A cooling fan module comprising a module housing and a fan assembly. The fan assembly comprises a blade assembly coupled to a motor disposed within a fan housing that is disposed within the module housing. The fan housing has an inlet and an outlet that is disposed within the module housing. A fan control circuit board is disposed within the module housing and outside of the fan housing. The fan control circuit board is coupled to the motor. An electrical connector is coupled to the fan control circuit board and projects outside of the module housing.