Abstract: A through-accessible reversible operation jet pump for attachment to a tubing string includes a pump housing having a pump housing interior and a jet pump assembly retrievably disposed in the pump housing interior. The jet pump assembly includes a carrier, a carrier nozzle in the carrier and at least one carrier opening in the carrier and establishing communication between the carrier nozzle and the pump housing interior. The jet pump assembly is adapted to be selectively removed from the pump housing interior through the tubing string as the pump housing remains attached to the tubing string. The carrier or the jet pump assembly is selectively positional in a first orientation in the pump housing interior to facilitate operation of the jet pump in a first fluid flow direction operational mode.

Abstract: A compressor having a stator vane assembly having an inner ring and a seal carrier secured thereto, the seal carrier having two opposite seal carrier end faces and the inner ring having two inner ring end faces which face said seal carrier end faces and are received between said seal carrier end faces with an axial gap therebetween, at least one clamping element bearing axially with a first clamping element end face against the inner ring and with a second clamping element end face against the seal carrier and being axially resiliently clamped between the inner ring and the seal carrier. A compressor with a clamping element for radial clamping is also provided.

Abstract: An air compressor includes a cylinder housing, an outlet receptacle disposed on the cylinder housing, and a partition formed between the cylinder housing and the outlet receptacle and having an air passage formed in the partition, a piston slidably received in the cylinder housing and coupled to a motor for moving relative to the cylinder housing in a reciprocating action in order to generate a pressurized air, and a spring-biased check valve engaged with the partition for selectively blocking the air passage of the partition, the outlet receptacle includes an inner diameter “D2” no less than an inner diameter “D1” of the cylinder housing for allowing the pressurized air to easily flow into the outlet receptacle and for allowing the piston to be moved in a greater moving speed.

Abstract: Apparatuses and methods are provided for preventing removal of an air-moving assembly from a chassis when in operating state. The apparatus includes an interlock assembly having a slide element and one or more interlock elements. The slide element is slideably coupled to the air-moving assembly and resides in a first position when the air-moving assembly is in the operating state, and is slidable to a second position when the air-moving assembly is in a quiesced state. The slide element prevents removal of the air-moving assembly from the chassis in the first position, and allows removal of the air-moving assembly from the chassis in the second position. The interlock element(s) is associated with the slide element and prevents sliding of the slide element from the first position to the second position when the air-moving assembly is in the operating state.

Abstract: A high efficiency transverse flux motor fan utilizes a transverse flux motor that can provide torque to drive fan blades at a reduced weight over conventional induction and brushless DC motors. A fan incorporating a transverse flux motor may be a residential ceiling fan or high volume low speed fan. Transverse flux motors are ideal for these applications as they have a higher efficiency at low revolutions per minute. A transverse flux motor may have a stator utilizing a ring shaped lamina that has extending members that form a coil channel. A lamina may be a unitary piece of material that is formed from a sheet of metal, thereby providing a very lightweight stator assembly. An exemplary fan may provide an airflow efficiency of more than about 236 L/s*W, (500 CFM/watt), an essential airflow density of more than about 2.36 L/s*g, (5 CFM/gram) and a power density of about 150 W/kg or more.

Abstract: A scroll compressor includes a compression mechanism, a crankshaft, and a drive motor. The compression mechanism has a fixed scroll and a movable scroll and is configured to compress a fluid. The crankshaft has a main shaft and an eccentric portion eccentrically disposed at one end of the main shaft and coupled to a back side of the movable scroll. The drive motor has a stator and a rotor coupled to the main shaft of the crankshaft to rotate the movable scroll. At least one of the main shaft of the crankshaft and the rotor of the drive motor is provided with a weight. The weight being is arranged to balance a centrifugal force of the movable scroll during rotation, and to reduce warpage of the crankshaft caused by balancing the centrifugal force of the movable scroll.

Abstract: A compressor control apparatus, and a compressor control method. The compressor may be operated in an operation mode in which commercial power applied to the compressor does not pass through an alternating current capacitor when the load is in an overload state, thereby preventing the loss of a drive and effectively reducing the copper and core loss of the compressor.

Abstract: A subsea boosting module for use with a direct current (DC) power system includes a housing defining at least one interior chamber. A fluid pump is disposed within the interior chamber. An electric motor is disposed within the interior chamber and drivingly coupled to the fluid pump. A plurality of power components is disposed within the interior chamber to deliver power to the electric motor.

Abstract: A device for pumping and treating gases is disclosed. The device features a stator having a plurality of pumping stages connected in series one after another between a suction side and a delivery side by the inter-stage ducts. The device also includes an inner tube and a blind outer tube, the tubes inserted one inside the other and made of ceramic material, the inner tube connected to the delivery side of the rotor housing of a pumping stage and the outer tube connected to the stator and communicating with at least one inter-stage duct formed in the stator, the tubes defining a path for the pumped gases. The device also includes a plasma source located outside the stator to generate a plasma in the path of the pumped gases.

Abstract: A drive unit (3) for a submersible oil pump, including a housing (7), a motor compartment (9) that is surrounded by the housing (7), and a rotor (13) arranged in the motor compartment (9), whereby a first fluid path (35) leading from a submerged oil environment (37) of the housing (7) to the motor compartment (9) is provided so as to allow oil to flow from the submerged oil environment (37) into the motor compartment (9).

Abstract: A method of controlling an auxiliary pump for supplying the hydraulic fluid of a hybrid transmission of a vehicle. The auxiliary pump, after the expiration of a predetermined time interval of deactivation, is activated to prevent accumulation of air in the intake area of the auxiliary pump. In addition, a device for the execution of the method, in which a control device is provided which has its signals connected with the electric auxiliary pump for the purpose of controlling the auxiliary pump in order to prevent accumulation of air in the intake area of the auxiliary pump.

Abstract: An electromagnetic pump configured with an electromagnetic portion that generates an electromagnetic force for pressing the piston, and an urging member that urges the piston in a direction opposite to the electromagnetic force. A strainer member including a disk-shaped portion which has a disk shape and in which a strainer surface is formed, and a side portion that extends from an outer peripheral edge of the disk-shaped portion. A suction check valve being capable of sucking the working fluid via the strainer surface. The piston, the urging member, the suction check valve, and the strainer member are sequentially inserted into the cylinder from a side opposite to the electromagnetic portion, and the cover member is attached so as to press the strainer surface.

Abstract: A valve assembly may include a valve plate having an inlet hole through which working fluid passes from a vacuum muffler, a first discharge hole through which working fluid discharged from a cylinder passes, a second discharge hole through which the working fluid from the first discharge hole passes, and a pulsation and/or noise reducing passage through which the working fluid from the second discharge hole flows; a discharge valve at or in the valve plate configured to open and/or close the first discharge hole; a valve sheet having a first hole therein communicating with the first discharge hole and a second hole therein at an outlet of the pulsation and/or noise reducing passage; and a vacuum valve in the valve sheet configured to open and/or close the inlet hole.

Abstract: A reciprocating compressor may include a shell, a first cylinder, a plate, a second cylinder, and a piston. The first cylinder may be disposed within the shell and may include a first valve. The plate may be fixed relative to the first cylinder and may include a second valve. The second cylinder may be axially aligned with the first cylinder and may be moveable relative to the first cylinder between first and second positions. The piston may be disposed within the second cylinder and may include a third valve. The piston may reciprocate relative to the first and second cylinders. The piston and the plate may define a first compression chamber therebetween. The piston and the first cylinder may define a second compression chamber therebetween.

Abstract: A fluid pump includes a hollow housing, an electric motor having an armature with a commutator, a pump section rotationally coupled to the electric motor for receiving fuel at a relatively low pressure through a fuel inlet and pressurizing the fuel to a relatively high pressure, a motor brush is in electrical contact with the commutator and including a shunt wire extending therefrom, and an end cap that closes one end of the housing and defines a high pressure chamber with the housing. The end cap includes a hollow brush tower extending therefrom and defining a brush holder slidably receiving the motor brush therein such that the brush holder defines in part the high pressure chamber. The end cap also includes an aperture with the shunt wire extending therethrough such that the shunt wire is sealed with the aperture to prevent the fuel from passing therethrough.

Abstract: An oil circulation system for electric motors in a hybrid electric vehicle having, as a power source, an internal combustion engine is disclosed. Provision is made to start oil circulation under high reliability even though an electric pump cannot circulate lubricant oil through the electric motors due to increased viscosity at low temperatures. The oil circulation system includes the electric pump in fluid communication with an oil flow path for the electric motors; a mechanical pump, in fluid communication with the oil flow path, operable on driving power of the engine; and a controller for control of operation of the electric pump and that of the mechanical pump. The controller utilizes operation of the mechanical pump upon detection of abnormality in operation of the electric pump derived from viscosity of the lubricant oil in order to recover the electric pump.

Abstract: A compressor assembly having an air ducting shroud that can direct a cooling air stream from a fan to components of the compressor assembly, such as a pump assembly. The pump assembly can have at least a pump, a motor and a fan. The compressor can be cooled by providing cooling air to a cylinder head of the pump without the cooling air experiencing choking or substantial cooling flow interference from a cooling of the motor.

Abstract: Devices, apparatus, brackets, systems and methods for mounting a remote control receiver off-axis and to the side of motor mount bracket inside a ceiling mounted hugger and low profile fan housing.

Abstract: A water pump of an internal combustion engine, including a pump housing having a cylindrical portion constructed so as to surround an outer peripheral side of a drive shaft, the cylindrical portion being integrally formed of an aluminum-based metal material, and a stepped portion provided on the outer peripheral side of the cylindrical portion. A bearing is provided having an outer race fixed to a pulley and an inner race made of an iron-based metal material and fixed to an outer periphery of the cylindrical portion. Additionally, a shielding member is provided having an inner peripheral side sandwiched between the inner race and the stepped portion, an outer peripheral side having a plate shape and extending to side of the outer race, and an end-face seal structure portion formed of an elastic material and formed on at least one of opposite surfaces of the sandwiched inner peripheral side.

Abstract: An air compressor device includes a cylinder housing and a supporting plate, a piston engaged in the cylinder housing and moved by a motor, the cylinder housing includes a partition for separating the cylinder housing into an upper compartment and a lower chamber, and a passage formed in the partition for allowing the pressurized air to flow from the chamber into the compartment of the cylinder housing, the compartment of the cylinder housing includes an inner diameter (D) greater than an inner diameter (d) of the chamber of the cylinder housing for allowing the pressurized air in the chamber to easily flow into the compartment of the cylinder housing with a relatively decreased pressure.