Abstract: A centrifugal blower assembly includes a scroll wall and at least one sidewall. The scroll wall is coupled to the at least one sidewall such that the scroll wall and the at least one sidewall at least partially define a blower chamber. The centrifugal blower assembly also includes an air stream splitter coupled to the scroll wall. The air stream splitter includes a base member fixedly coupled to the scroll wall and positioned within the blower chamber and a spline member extending a varying distance from the scroll wall and perpendicularly from the base member. An outer surface of the airstream splitter contacts an inner surface of the scroll wall.

Abstract: Double acting positive displacement fluid pump Double acting positive displacement fluid pump having two or more housings (3A,20A), a first housing (3A) comprising a pump fluid inlet chamber (3) and a separate housing (20A) comprising a pump fluid outlet chamber (20), the pump fluid inlet chamber (3) being in fluid communication with the pump fluid outlet chamber (20) by means of a through passage (6A), said through passage (6A) having an inlet positioned within the pump fluid inlet chamber (3) and an outlet positioned within the pump fluid outlet chamber (20), the inlet portion (6) of the plunger having an effective displacement area which is larger than the effective displacement area of the outlet portion (21) of the plunger, said passage being further provided with a combined suction-discharge valve assembly (9) arranged in the through passage, wherein the pump fluid inlet chamber (3) comprises a central pump fluid inlet chamber axis and a fluid entry (1B) having an inlet suction valve assembly (2), the p

Abstract: A hydrostatic piston engine comprises a housing with a cylinder drum with cylinder bores mounted rotatably therein. Each of the cylinder bores receives a working piston in a longitudinally displaceable manner, via which a hydrostatic working chamber is delimited by the cylinder bore. The hydrostatic working chamber has an opening on an outer surface of the cylinder drum by which, when the cylinder drum rotates, outlets of a high-pressure chamber and of a low-pressure chamber of the piston engine and a reversing surface arranged between the two outlets in the rotational direction can be passed over in alternating fashion. At least one pressurizing medium channel is provided which, on one hand, opens out in the reversing surface and, on the other, into a pressurizing medium trough of the piston engine.

Abstract: A turbo compressor includes a driving unit including a stator and a rotor that are configured to generate a rotational force and a rotary shaft that is connected to and rotated by the rotor, an impeller connected to the rotary shaft to pressurize a suction refrigerant in the radial direction of the rotary shaft and a casing that receives the driving unit and the impeller and supports the rotary shaft. The casing includes a first shell to which the stator is fixed and that rotatably supports the rotary shaft, and a second shell that is spaced apart from the first shell and surrounds the first shell. A shell passage is defined between the first and second shells. The discharged refrigerant cools the driving unit, which improves the efficiency of the compressor.

Abstract: A pump includes a suction space, a delivery space and valves. The suction space is at least partly bounded by a flexible body and located between end elements, at least one of which can be driven so as to move in a reciprocating manner. The delivery space surrounds the suction space and around which a housing is provided. The valves are provided in the housing and in at least one of the end elements, and are constructed such that when a volume of the suction space is increased, a medium is sucked into said suction space, and when the volume is reduced, the medium flows through one of the valves to the delivery space, from which it is expelled when the volume of the delivery space is reduced.

Abstract: A pump includes a fluid inlet section, a fluid outlet section, a rotor axially between the fluid inlet section and the fluid outlet section, a stator surrounding the rotor and a center section radially inside of the rotor on a center axis of the pump. The rotor and the center section define a fluid flow chamber radially therebetween. The rotor is rotatable inside of the stator about the center section by electromagnetic forces urging the rotor towards the stator. The pump also includes an inlet control section configured for regulating fluid flow from the fluid inlet section into the fluid flow chamber and an outlet control section configured for regulating fluid flow from the fluid flow chamber into the fluid outlet section.

Abstract: A method for the determination of the deflection of a wind turbine blade is provided. A distance between at least one root location towards a root end of the wind turbine blade and at least one tip location towards a tip end of the wind turbine blade is measured. A blade deflection profile is then calculated based on the measured distance between the root and tip locations and a known modal profile of the wind turbine blade.

Abstract: A fan control system has a fan duct, a fan mounted in the duct, an electronic commutator (EC) motor for driving the fan, and a control system hub for controlling the EC motor. A pressure differential sensing system is mounted in association with duct and feeding a pressure differential signal to the control system hub. An input device mounted on the control system hub for scaling an output signal from a low percent extreme to a high percent extreme and sends that output signal to the EC motor. Wherein the control system hub speeds, slows or switches OFF the EC motor according to the pressure differential signal except that the input device sets a speed limit ceiling on the EC motor.

Abstract: A retaining collar is disclosed for a bayonet mount comprising a rotor disc having a male mounting member defining a pair of apertures and an auxiliary annular wheel defining a plurality of mounting slots. The retaining collar comprises a ring-shaped body and a pair of retention pins. The ring-shaped body has a pair of circumferential end portions separated by a circumferential gap, and an arcuate radial outer surface extending circumferentially between the end portions. The body is dimensioned so that the radial outer surface frictionally engages a radial inner surface of a cylindrical male mounting member in the bayonet mount. The pair of retention pins each extend radially outward from one of the circumferential end portions. Each of the retention pins are dimensioned to extend radially outward from the body through one of said apertures and one of said mounting slots.

Abstract: A system and method for producing compressed air from ocean waves. The system includes an enclosing frame having a base anchored to an ocean floor with two or more columns extending upward from the base to above the ocean surface and a platform at an upper end of the columns. A float is located in the frame between the columns so that the float is confined to go up and down. The float is placed on the ocean surface within the frame and goes up and down with the ocean waves. One or more pumps are located on the platform with the hammer head that can be raised and lowered to produce compressed air with the pumps. The hammer head is connected to the float with two or more elongated shafts so that the hammer head is raised and lowered by the ocean waves and produces compressed air.

Abstract: A compressor including a motor having a rotary shaft, a rotor and a stator, and an impeller at a front end of the rotary shaft to suction refrigerant in an axial direction and compress the refrigerant in a centrifugal direction. The compressor has a collar at a rear end of the rotary shaft and coupled to the rotary shaft to be extended outwardly in a radial direction of the rotary shaft. Radial bearings support a radial movement of the rotary shaft at a front and rear of the stator. A thrust bearing prevents an axial movement of the rotary shaft. A mechanical backup bearing also prevents the axial movement of the rotary shaft. A fixing unit supports the backup bearing at the rear end of the rotary shaft, wherein the backup bearing is arranged to overlap the thrust bearing in the radial direction of the rotary shaft.

Abstract: A control method of a fuel supply pump includes moving an anchor in the closing valve direction by passing a maximum drive current through the solenoid, and thereafter holding the anchor at a closing valve position by passing a holding current for keeping a closing valve state through the solenoid. The holding current is smaller than the maximum drive current. A current value of a first drive current is smaller than a current value of the holding current. A current value of a second drive current overlaps a range of the current value of the holding current. A current value of a third driving current is equal to or more than the current value of the holding current.

Abstract: A radon gas removal apparatus configured to provide evacuation of radon gas from a desired area or building. The radon gas removal apparatus includes an exterior housing forming an interior volume. Disposed within said interior volume is a motor assembly and a fan operably coupled. The motor assembly includes an upper portion having a metal housing wherein the upper portion has a cavity proximate the top thereof configured to store a circuit board. The cavity is hermetically sealed utilizing a lid member. A heat sink assembly is proximate the lower edge of the upper portion of the motor assembly. The heat sink assembly includes a central void configured to receive a motor therein. The heat sink includes a first wall and a second wall having a void intermediate configured to a heat sink material. A motor is present within the central void of the heat sink assembly.

Abstract: A pump cassette comprising an outer flexible membrane covering flowpaths, valve chambers and pump chambers of the cassette is designed to be actuated by a control gasket on a base unit arranged to move designated valve and pump portions of the cassette membrane. The gasket valve control or actuation region is at least partially bounded by a vacuum channel facing the outside of the gasket so that a constant vacuum can be applied between the gasket valve control or actuation region and the adjacent portion of the cassette membrane. An improved version of the vacuum channel comprises a flexible inner wall of the vacuum channel flexes or partially collapses away from the cassette valve seat, while still maintaining patency of the vacuum channel during the application of negative pressure on the gasket valve actuation region to open the cassette valve.

Abstract: An apparatus for linear compressor includes a drive unit configured to apply a test signal to the linear compressor, a current detection unit configured to detect a motor current of the linear compressor, a voltage detection unit configured to detect a motor voltage of the linear compressor, and a controller configured to acquire plural inductances varied according to a size of the motor current, based on a change of the motor current and the motor voltage which are acquired according as the test signal is applied.

Abstract: A motor pump capable of preventing deformation of a resin-made motor casing due to heat while securing a mechanical strength of the motor casing is disclosed. The motor pump includes a motor casing made of resin. The motor stator is disposed in the motor casing. The motor casing includes a partition wall located between the impeller and stator coils, ribs extending radially, and an inner frame connected to an inner edge of the partition wall. The partition wall is fixed to the ribs. The motor casing has guide protrusions formed on an outer surface of the inner frame, and further has recesses formed between the guide protrusions.

Abstract: An assembly of a blade assembly bracket and a blade of a ceiling fan includes a blade assembly bracket, an adaptor, and a fan blade. The adaptor is pivoted to the blade assembly bracket, and the fan blade is pivoted to the adaptor. When the adaptor is pivoted relative to the blade assembly bracket, the adaptor can drive the rotatable holder simultaneously to switch a position of the fan blade between an initial position and a rotational position, so as to change an inclination angle of the fan blade, and make the fan blade unfold outwardly. When the operation of the ceil fan is stopped, the adaptor is operated reversely to make the fan blade fold from the outwardly-unfolded state.

Abstract: A small-sized submersible pump unit having a submersible motor, discharge module, pump housings which are connected by flangeless coupling is disclosed. The flangeless coupling is made using embedded ring segments. The coupled housings each have the covering and the covered parts, and the covered part of one of the housings contains a blind rectangle groove, and the covering part of another housing has a through rectangle groove, and the grooves form a cavity having an embedded ring segment.

Abstract: Method for cooling a liquid-injected compressor element, where a liquid is injected in the compression chamber of the compressor element (2) via an injection valve (13). The method includes the step of adjusting the quantity of liquid which is injected in the compression chamber of this compressor element (2) as a function of a specific adjusting parameter, irrespective of any other possible adjustments. The quantity of liquid to be injected is adjusted by using a second injection valve (19), which has the shape of an adjustable valve to this end.

Abstract: The performance of a solenoid drive liquid pump can be very dependent on the magnitude and stability of an input voltage, with non-ideal input power resulting in loss of efficiency and potential damage to the pump. Pulse width of drive signals provided to the pump, which cause solenoids to alternately energize to move liquid through the pump, may be adjusted in duration in order to compensate for non-ideal input voltage. A drive control module of the pump gathers voltage information, determines an improved pulse width based upon that voltage information, and then provides drive signals based upon the improved pulse width. Operating in this manner, a pump can operate at or near peak efficiency despite both significant variances in input voltage and non-sinusoidal input voltage, and without customized components or adapters.