Abstract: An axial blower includes: a housing including a wind tunnel; an impeller that is disposed in the wind tunnel and includes a plurality of blades; and a motor that includes a rotation shaft and is secured to the housing, the impeller being secured to the rotation shaft. When an angle between a chord of the blade at a cross-sectional surface of the blade cut by a virtual cylindrical surface centering the rotation shaft, and a surface perpendicular to the rotation shaft is defined as a mounting angle, the blade includes an intermediate part between an inside diameter side part and an outside diameter side part of the blade, and this intermediate part has a mounting angle equal to or larger than a mounting angle of the inside diameter side part, and larger than a mounting angle of the outside diameter side part.

Abstract: A high pressure fuel pump unit includes a pump head where an inlet channel opens into a low-pressure chamber itself in fluid communication with a compression chamber. A valve is arranged so that when it is closed the fuel fills the low-pressure chamber and when the valve opens the fuel flows from the low-pressure chamber into the compression chamber. The pump head also includes a resilient member arranged so that when the valve is closed, the resilient member deforms to increase the volume of the low pressure chamber. When the valve opens, the fuel flows into the compression chamber, pushed by the resilient member which takes back its original shape.

Abstract: A conveying device at least for conveying a conveying medium includes at least one conveying space, with at least one conveying space element, which at least partly delimits the conveying space and is embodied in a rigid fashion, and with at least one elastically deformable conveying element which delimits the conveying space together with the conveying space element. The conveying space element includes at least one concave recess for at least partly forming the conveying space, wherein an inner surface of the conveying space element, which delimits the concave recess, forms a wall of the conveying space, wherein the conveying element comprises at least one conveying surface, which is utilizable in targeted fashion for a conveyance of a fluid in the conveying space and/or through the conveying space.

Abstract: Methods and apparatus for monitoring air cooling fans including, by way of non-limiting examples, the determination of an upper and lower boundary limit of acceptable fan operation, sends a control signal to a fan being monitored, measures the fan rotation rate or fan power consumption subsequent to sending the control signal; and issues an alarm if the measured fan rotation rate is above the upper boundary limit or below the lower boundary limit.

Abstract: A rotor, motor, pump and a cleaning apparatus are provided. The rotor includes a shaft and two magnets fixed to the rotary shaft. Each magnet comprises a radial outer surface, a radial inner surface, and two connecting surfaces that connect the radial outer surface and the radial inner surface at opposite ends of the magnet. The radial outer surface has an arc section. The radial inner surfaces of the two magnets cooperatively define an inner bore for the shaft to pass therethrough. A ratio of a pole arc angle of each magnet to a 180-degree angle is in the range of 0.75 to 0.95.

Abstract: A scroll compression mechanism 11 for compressing refrigerant and a driving motor 13 that is connected to the scroll compression mechanism 11 through a driving shaft 15 and drives the scroll compression mechanism 11 are accommodated in a casing 3, the scroll compression mechanism 11 is supported in the casing 3 by a main frame 21, a stator 37 of the driving motor 13 is directly or indirectly supported in the casing 3, and the driving shaft 15 is connected to a rotor 39 of the driving motor 13 and supported in the casing 3 by a bearing plate 8, and a lower end of the driving shaft 15 is supported by a thrust plate 6 provided to the bearing plate 8, and the center position of the rotor 39 is located to be lower than the center position of the stator 37.

Abstract: The invention relates to a metering pump having a hydraulic drive (12) for supplying a hydraulic fluid under pressure.

Abstract: An outdoor fan motor driving device and an air conditioner including an outdoor fan motor driving device are provided, which may include an inverter to convert DC power into AC power according to a switching operation and to output the converted AC power to an outdoor fan motor, an output current detector to detect phase currents flowing in the outdoor fan motor, and a controller to control the inverter based on the detected phase currents.

Abstract: The speed of a cooling fan of a scroll pump is controlled such that fan-generated noise can be kept low. The scroll pump includes a pump head, a pump motor, the fan, a controller and one or more sensors. The pump head includes a plate scroll set in which a tip seal is provided to create a seal between the blade and the opposing plates of the plate scrolls of the set. The speed of the fan is cycled by the controller, and the power draw on the pump motor as a result is checked. These results are used to infer the state of the pump, i.e., to discriminate several different states of the pump from one another, including a state in which a new tip seal is being worn in, and to control the speed of the fan accordingly.

Abstract: A system and a method are disclosed herein that relate to powering a pumping system within a downhole tool. The system may include a turbine having a shaft extending therefrom, in which the turbine is configured to convert energy from a fluid received therein into rotational energy for the shaft. The system may further include a pumping system coupled to the shaft of the turbine, in which the pumping system includes one or more driving devices coupled to one or more displacement units. The displacement units may have a cavity formed therein, in which the cavity is configured to receive a fluid therein. The driving devices may then be configured to drive the displacement units such that the fluid is received within the cavity of the displacement units.

Abstract: A fluid sending apparatus includes a signal generator that generates a signal including a signal component that has a one-sided waveform and is composed of a rising component in a positive voltage direction, a falling component in the positive voltage direction, and a vortex ring formation time component T, and a damping component for driving for a predetermined time with a voltage less than or equal to one-half of a voltage in the positive voltage direction, the waveform of each of the signal component and the damping component corresponding to a single wave.

Abstract: A pump control switch for controlling the operation of a pump, where the pump switch includes a pressure activated switch and a run capacitor located in a single housing. The pressure switch is attached by a pipe fitting to be in fluid communication with the water line that feeds into a storage tank, to sense the water system pressure. The water system pressure sensed by the switch moves the electrical contacts in the switch between their open and closed positions. The pressure switch is disposed to operably electrically interconnect a power source, the run capacitor, and the pump motor.

Abstract: A side channel blower includes a housing (10) a motor (16) with a motor shaft that rotates about a motor axis. A first blower housing area (30) has a first delivery channel (34) with an inlet (36) and outlet (38) and is open towards a first axial side (32) and surrounds the motor axis. A first delivery wheel (46) covers the first delivery channel (34) and is carried at a first end area (44) of a motor shaft (20). A second blower housing area (52) has a second delivery channel (56) with an inlet (58) and with an outlet (60) and is open towards a second axial side (54) and surrounds the motor axis. A second delivery wheel (68) is located opposite the second axial side (54) and covers the second delivery channel (56) and is carried at a second end area (64) of the motor shaft (20).

Abstract: The multiple cylinder rotary compressor includes a compressor body including a hermetic case, the hermetic case housing inside a rotating shaft, an electric motor section, and a compression mechanism body. The compression mechanism body includes at least three compression mechanism sections which stack with each other, partition plates between the corresponding adjacent compression mechanism sections, and a primary bearing and a secondary bearing supporting the rotating shaft on both end sides of the compression mechanism body. The compression mechanism sections include a cylinder forming inside a cylinder chamber, an eccentric section provided to the rotating shaft, disposed in the cylinder chamber, a roller fitted to the eccentric section, rotating eccentrically within the cylinder chamber, and a blade dividing the inside of the cylinder chamber into two. At least one partition plate constitutes a partition plate bearing supporting the rotating shaft.

Abstract: Pump units are known that have a drive shaft and a rotor, which is driven by the drive shaft and is arranged rotatably in a housing, the drive shaft having an oblique sliding plane, which interacts with the rotor and allows the rotor to nutate with the rotor axis thereof about a drive axis of the drive shaft, the rotor having a set of teeth on the end face of the rotor facing away from the drive shaft, said teeth meshing with a set of teeth formed on a housing of the pump unit, working spaces being formed between the teeth of the rotor and the teeth of the housing, which working spaces can be filled via an inlet and emptied via an outlet. It is disadvantageous that the pump unit has a comparatively large axial installation length, because the drive of the pump unit is arranged on an end of the drive shaft facing away from the rotor. In the pump unit according to the invention, the axial installation length is shortened.

Abstract: An electronic air pump pressurizes object in either manual or automatic mode. In automatic mode, the electronic air pump determines air pressure needed to adjust an object to a set target pressure. The electronic air pump inflates or deflates the ball automatically until the air pressure inside the ball matches the preset value. In manual mode regulation of the air pressure is adjusted by a user.

Abstract: A system including a rotary isobaric pressure exchanger (IPX) configured to exchange pressures between a first fluid and a second fluid, and a motor system coupled to the hydraulic energy transfer system and configured to power the hydraulic energy transfer system.

Abstract: The present invention is provided to suppress occurrence of free flow. An infusion pump includes: a sliding clamp closing and releasing an infusion tube; a pump body including a tube attachment portion to which the infusion tube is to be attached detachably and forcibly transferring liquid in the infusion tube; and a door pivotably supported by the pump body so that the tube attachment portion is openable and closable by the door. The pump body includes: a clamp attachment portion into which the sliding clamp having the infusion tube set therein is to be inserted and set; and a release operator being operated in the clamp attachment portion to transfer the sliding clamp from a close mode to a release mode, the release operator being configured to be locked, in response to opening movement of the door, so that the release operator is inoperable for releasing, and to be unlocked in response to closing movement of the door.

Abstract: An electric pump may comprise a pump portion including an impeller, a motor portion configured to activate the pump portion, and a housing configured to contain the pump portion and the motor portion. The motor portion may comprise a rotor configured to activate the impeller, a stator configured to rotate the rotor, a control circuit configured to control a rotation of the rotor, a resin portion configured to cover the stator, and a heat transferring portion contacting the control circuit and the housing, thermal conductivity of the heat transferring portion being higher than thermal conductivity of the resin portion.

Abstract: Pump units include a rotatably arranged rotor (3) that is driven by a drive shaft (2), wherein the drive shaft (2) has a first bearing section (18) facing towards the rotor (3), and a second bearing section (19) facing away from the rotor (3). The first bearing section (18) is a first sliding bearing (20), and the second bearing section (19) is a second sliding bearing (21). The load-bearing capacity of the first sliding bearing (20) is limited by a predetermined working pressure in the pump unit. In the pump unit according to the invention, the load-bearing capacity of the sliding bearing (20) facing towards the rotor (3) is increased. According to the invention, the diameter of the first bearing section (18) of the drive shaft (2) and the first sliding bearing (20) is larger than the diameter of the second bearing section (19) and the second sliding bearing (21).