Abstract: Embodiments relate to a high-pressure fuel pump having a pump piston which, during operation, moves in translation between a pressure chamber and a leakage chamber. The leakage chamber has a leakage collecting region and an equalizing region. A low-pressure damper having a bellows-shaped corrugated damper plate is arranged in the equalizing region.

Abstract: A diaphragm pump, in particular for use as a detergent dosage pump, comprises a pump head, a fluid chamber adjacent to the pump head, a diaphragm defining a wall of the fluid chamber and reciprocatingly movable, at least a suction check valve and a dosing check valve, a control unit, and a detector unit for detecting a fluid inside the fluid chamber. The diaphragm pump according to the invention offers increased process reliability.

Abstract: A gas transportation device includes a gas outlet cover, at least one flow-guiding pedestal, a primary gas pump, a secondary gas pump and an adhesive film. The gas outlet cover includes a gas outlet nozzle and a gas outlet cavity. Each flow-guiding pedestal includes a main plate, a protruding frame and a chamber frame. The main plate includes a recess and a communicating aperture. The primary gas pump is disposed in the protruding frame, and the secondary gas pump is disposed in the chamber frame. The adhesive film has a hollow structure, is disposed between the primary gas pump and the flow-guiding pedestal and defines a convergence chamber. Consequently, the gas is introduced into the recess, transported to the primary gas pump through the communicating apertures and the convergence chamber, transported to the gas outlet cavity via the primary gas pump, and finally discharged out from the gas outlet nozzle.

Abstract: The suction device includes a suction port revolving around a revolution axis while sucking a fluid so as to generate an artificial tornado. The suction port revolves around the revolution axis while sucking the fluid, so that it is possible to generate an artificial tornado more stably.

Abstract: An ejector is presented. The ejector includes a primary fluid inlet to receive a primary fluid. The ejector further includes a secondary fluid inlet to receive a secondary fluid. Furthermore, the ejector includes a nozzle fluidly coupled to the primary fluid inlet and the secondary fluid inlet. The nozzle includes a secondary pilot inlet to receive at least a portion of the secondary fluid from the secondary fluid inlet, and a nozzle outlet including a plurality of primary openings for discharging the primary fluid and a secondary opening for discharging the secondary fluid. A turbo-machine having the ejector is also presented.

Abstract: An axial fan has a housing and a motor with motor shaft and blower wheel attached to the motor shaft. The blower wheel has fan blades attached to a hub and provided with a leading and a trailing edge, respectively. A suspension arrangement is provided with a brace part made from flat material. The brace part connects motor and housing and has a length measured in a direction from motor to housing. The brace part is arranged on edge in an airflow direction and has a width measured in the airflow direction. The brace part has two limbs extending lengthwise in length direction of the brace part. The limbs are spaced apart from each other and delimit opposite sides of an opening formed by a punch-out in the flat material and extending along some of the length. The limbs are arranged one behind the other in airflow direction.

Abstract: A reciprocating compressor is provided. The reciprocating compressor may include a connector coupled to a discharge hose and a discharge pipe, a cutout formed in the connector or the discharge pipe, and a clamp inserted into the cutout. The connector and the discharge pipe may be supported by the clamp.

Abstract: An air circulator which is attached to a sheet member and which is for generating an air flow from one side of the sheet member to another side of the sheet member includes a fan main body and a ring member for attaching the fan main body to the sheet member. The fan main body includes a hollow cylinder unit, a flange formed on the cylinder unit, a motor fixing unit, a motor fixated to the motor fixing unit, a wing attached to a rotating shaft of the motor and first engaging units formed on outer surfaces of first parts of the cylinder unit, the first parts forming a pair and facing each other. The ring member includes second engaging units which are formed on inner surfaces of second parts that form a pair, the second parts facing each other, and which engage with the first engaging units.

Abstract: A system includes a fixed-displacement fluid pump, a motor operatively connected to the fixed-displacement fluid pump, a sensor configured to sense a parameter related to a drive speed of the motor, and a user interface. The pump controller is configured to receive an input from the user interface of a target flow rate of the pump, determine a duty cycle for the motor based on the target flow rate, and control the motor to operate according to the duty cycle. The pump controller is further configured to receive an indication of the sensed parameter related to the drive speed of the motor, determine a measured drive speed of the motor based on the sensed parameter, and iteratively adjust the duty cycle based on a difference between the measured drive speed of the motor and an expected drive speed of the motor.

Abstract: A multi-spool gas turbine engine comprises a low pressure (LP) spool and a high pressure (HP) spool. The LP spool has an LP shaft for transferring a torque from an LP turbine to an LP compressor. The HP spool has an HP shaft for transferring a torque from an HP turbine to an HP compressor. The LP shaft is coaxially mounted inside the HP shaft. An inter-shaft bearing is mounted radially between the LP shaft and the HP shaft. The inter-shaft bearing is disposed axially between the HP compressor and the LP compressor.

Abstract: A magnetically driven centrifugal pump has a pump case, an open vane impeller in the pump case, a stuffing box including a stuffing box outer being fixed relative to the pump case and a stuffing box inner threadedly engaged with the stuffing box outer, and a rotor axially fixed and rotatably mounted in the stuffing box inner. Bushings are arranged between the rotor and the stuffing box inner. A drive is fixed relative to the pump case and includes a drive output extending into the rotor. There is a magnetic coupling between the rotor and the drive and a canister fixed to the stuffing box and extending through the magnetic coupling to isolate the rotor from the drive. A rub ring closes the end of the stuffing box inner and constrains the drive output from damaging the canister under catastrophic bearing failure.

Abstract: A clearance control system for a gas turbine engine comprises a blade outer air seal mounted on a carrier. At least one blade is rotatable about an engine axis. The blade outer air seal is spaced radially outwardly from a tip of the blade by a clearance. A heat exchanger is configured to deliver air at a first temperature to the blade outer air seal at a first operating condition to allow the blade outer air seal to move in a first direction to maintain a desired clearance, and configured to deliver air at a second temperature to the blade outer air seal at a second operating condition to allow the blade outer air seal to move in a second direction to maintain a desired clearance, and wherein the second temperature is less than the first temperature. A gas turbine engine and a method of controlling tip clearance in a gas turbine engine are also disclosed.

Abstract: A cooling system for cooling an integrated, high pressure, motorcompressor unit, the cooling system including a second motorcompressor unit and at least a first duct fluidly connecting a process fluid connection point located at the second motorcompressor unit to at least one process fluid injection point located at the first motor area of the first motorcompressor unit.

Abstract: A compressor may include a shell, first and second compression mechanisms, and first and second motor assemblies. The first compression mechanism may include first and second compression members that are rotatable relative to the shell about first and second rotational axes, respectively. The first motor assembly may be disposed within the shell and may include a first rotor attached to the first compression member. The second compression mechanism may include third and fourth compression members that are rotatable relative to the shell about third and fourth rotational axes, respectively. The second motor assembly may be disposed within the shell and may include a second rotor attached to the third compression member.

Abstract: A plunger pump includes a cylinder section having a cylinder chamber and a spacer section sliding against a portion of the plunger closer to a proximal end side than a portion of a plunger advancing and retracting into the cylinder chamber. The cylinder section is made of a material having first hardness, and the spacer section being made of a resin material having second hardness softer than the first hardness. A length in an axial direction from a proximal end of a sliding portion of the spacer section sliding against the plunger to a distal end of the spacer section is larger than a maximum stroke length of reciprocation of the plunger.

Abstract: The machine comprises distribution ducts connected to respective ones of first, second, and third enclosures (40, 42, 44), and a cylinder-capacity selector (21) suitable for being caused to take up a large cylinder capacity configuration in which the second enclosure (42) is connected to one of the main ducts (2), while the first and third enclosures (40, 44) are connected to the other main duct (1), and a small cylinder capacity configuration in which the second and third enclosures (42, 44) are connected to said one of the main ducts (2), while the first enclosure is connected to the other main duct (1). The machine further comprises a safety valve (150) having at least a first port (56) connected to said one of the main ducts (2), and a second port (58) connected to the third enclosure (44).

Abstract: A system is provided for pumping fluid, with the system including a fluid pump and a cassette. The pump includes a motor and a piston that is movable toward and away from a flexible diaphragm of the cassette. A linkage connects the motor and the piston to move the piston toward and away from the diaphragm. At least a portion of the piston or the diaphragm is magnetized, with the other having at least a portion that is magnetized or formed of a ferromagnetic material, thereby magnetically coupling the piston and the diaphragm such that movement of the piston moves the diaphragm into and out of a cassette cavity aligned with the diaphragm and piston. Movement of the diaphragm into and out of the cavity changes the effective volume of the cavity, which has the effect of drawing fluid into or forcing fluid out of the cavity.

Abstract: A floor pump comprises a support base, an outer rigid tube rising from the support base and delimiting a first air chamber, an inner rigid tube or shaft having a piston at one end and a handle at the other end, which piston is slidingly mounted within the first air chamber so as to compress air therewithin. The floor pump may further include a flexible hose.

Abstract: The purpose of the present invention is to provide a pump device that has a function to separate foreign matter from a working fluid in which foreign matter is mixed and that is capable of supporting a large working fluid flow rate. The present invention includes a first pump that is provided above a working fluid reservoir, and a second pump that has a rotary shaft that is concentric with a rotary shaft of the first pump and that is provided further down than an inlet of the first pump. A centrifuge filtration device having functionality to separate foreign matter from the working fluid is provided in an area below the inlet of the first pump and above the second pump, and the centrifuge filtration device is disposed so that the inner diameter on the second pump side is large and the inner diameter on the first pump side is small.

Abstract: A pump device, in particular for a brake system of a motor vehicle, includes two hydraulic chambers, a linear drive, and a pump piston. Each of the chambers has at least two fluid connections. The pump piston interacts with the chambers. The linear drive is embodied as a reluctance drive and includes a longitudinally movable armature, a housing-fastened stator that is configured to receive current, and at least one spring element. The at least one spring element is associated with the armature, and is configured to counteract a drive force of the reluctance drive. The armature is connected to the pump piston.