Abstract: A self-priming centrifugal pump comprises an inlet and an outlet, and a centrifugal impeller for receiving liquid from the inlet and delivering it to the outlet. An inlet valve and an outlet valve are provided, and a diaphragm arrangement is driven by the same motor as the impeller to provide priming. The diaphragm arrangement can be integrated into a pump design without taking up significant additional space. By driving the diaphragm arrangement with the motor, no additional power source is required.

Abstract: A linear compressor and a method for controlling the same. The linear compressor automatically short-circuits part of a coil having no power-supply voltage in order to substantially prevent an excessive stroke from being generated when the linear compressor is initially operated. The linear compressor includes a piston contained in a cylinder, for executing reciprocating linear motion to suck or discharge a refrigerant, a linear motor for providing the piston with driving power to allow the piston to execute the reciprocating motion, and a power-supply unit for providing the linear motor with a power-supply voltage, and performing an automatic short-circuit function to prevent an excessive stroke from being generated during an initial operation stage of the linear motor. Therefore, the linear compressor can reduce noise caused by the excessive stroke generated during the initial operation stage of the linear compressor, resulting in increased efficiency and convenience of the linear compressor.

Abstract: A magnetic drive sealless pump. The pump includes a casing having a fluid suction opening and fluid discharge opening. A shell is combined to the rear part of the casing, and the exterior of the shell is combined with a bracket having a motor for impelling and rotating a drive magnet. At the center of the shell is provided with a shaft enveloped with a bearing having a spiral fluid passage at the interior thereof. A capsule is provided between the bearing and the shell and at the interior of the capsule is provided with a driven magnet situated between the bearing and the drive magnet. The capsule is also extended into the casing and at the front of the capsule is provided with impeller. The impeller, capsule and bearing are integrated into one body for forming a rotating member having a thrust ring at the front and rear parts thereof, respectively, for preventing axial movements of the rotating member.

Abstract: A solar energy operated air pump includes a rectangular box having a lower lid connected to the bottom, an upper lid openably covering the top thereof and a solar cell inlaid into the upper lid protected by a layer of transparent painting. Inside the box there are a battery chamber containing spare batteries, a motor having an axis connected to an eccentric cam which respectively pivoted to a pair of push rods. The push rods each has a push plate on free end respectively engaged with a pair of air extractors each of which has an air vessel symmetrically connected to the opposing side walls of the box and each of the air vessels has an air inlet and an air outlet, a three steps switch respectively connected to the motor, the solar cell and the battery chamber. When the motor is operated either by the solar cell or by the batteries, the air extractors pressed by the push plate begins to supply fresh air into the water in a pair through a pair of hoses.

Abstract: A fluid pump integrated with a motor, a fluid pump/generator device, a rotor for a fluid pump/generator device, a stator for a fluid pump/generator device and a method for pumping fluid are disclosed. Specifically, a fluid pump includes a motor rotor having a plurality of magnetic vanes that electromagnetically interact with a plurality of magnetic poles of the motor stator such that the rotor functions simultaneously as the impeller for the pump and rotor for the motor, with fluid flowing through channels on the rotor. Pump and motor are tightly integrated into one single device so that the number of parts is reduced, total size is compressed, reliability of the device is improved, and cost efficiency is increased. In addition, the use of magnetic vanes for propelling fluid improves motor efficiency. Further, the fluid flow is used to directly cool the pump/generator device, which reduces energy consumption.

Abstract: There is disclosed a lobe mixer comprising: a cylindrical partition wall 22 which partitions a high-speed inner flow from a low-speed outer flow; a lobe portion 24 which is disposed on a downstream side of the partition wall and whose transverse sectional shape is a waveform shape and is enlarged on the downstream side; and a connecting reinforcement member 26 which is disposed between lobe side walls 24a extending in a radial direction of the lobe portion to connect the adjacent lobe side walls to each other. The connecting reinforcement member 26 is a thin member disposed along a flow line of a fluid which flows between the lobe side walls.

Abstract: A primary-secondary pumping system for HVAC systems wherein the common pipe is configured so that there is at least a 4 ft pressure drop across the length of the common pipe and that all thermal plants see the same temperature of water entering the thermal plants and that return water sees the pressure drop of the common pipe before it sees the chilled (or heated) water leaving the thermal plant and the suction of the secondary pumps.

Abstract: A peristaltic pump is disclosed having pump motor with a rotating motor shaft and a shaft axis; a peristaltic pump head rotatably mounted on the motor shaft; a raceway having a semi-circular track arranged around the pump head and coaxial with the shaft axis, wherein the track has a beveled edge at an entrance to the raceway to receive a tube loop being loaded into the pump; the pump head includes at least one roller orbiting the raceway and compressing the tube loop against said raceway, and a cartridge to which the tube loop is attached and mountable on the raceway.

Abstract: The object of the present invention is to provide a capacity control valve for a variable displacement compressor, which is not adversely affected by pressure from a pressure-regulating chamber. A three-way valve structure is formed in which a high-pressure valve element and a low-pressure valve element are integrally formed at both ends, and valve seats with valve holes having the same diameter are arranged in a manner opposed to the respective valve elements. A discharges pressure is supplied from the upstream side of the valve seat, and a suction pressure is supplied from the downstream side of the valve seat. Pressures from a pressure-regulating chamber are received at the downstream side of the high-pressure valve element and the upstream side of the low-pressure valve element.

Abstract: Disclosed herein are a cylinder assembly for compressors, a compressor with the cylinder assembly, and an apparatus having a refrigerant circulation circuit with the compressor. The present invention provides the cylinder assembly, which has a simple structure and is designed to further reduce a pulse noise. The cylinder assembly includes a cylinder block having two exhaust mufflers. Each of the exhaust mufflers is opened at an end thereof. A frame is mounted to the cylinder block to cover the open ends of the exhaust mufflers. At least one channel is formed at a junction between the cylinder block and the frame to allow a refrigerant to flow between the exhaust mufflers. Further, the cylinder assembly of the present invention is applied to a compressor, and the compressor of the present invention is applied to an apparatus having a refrigerant circulation circuit.

Abstract: The axial piston machine comprises a case, a shaft and a cylinder block (2), arranged so as to rotate in the case and having a plurality of cylinders (21) with pistons, adapted to slide in said cylinders and connected to piston rods (6) by means of first spherical joints, the piston rods being connected to a sliding plate (7) by means of second spherical joints (63), said sliding plate (7) being supported by a swash plate (8) via a bearing (72). For the connection between a piston rod (6) and the sliding plate (7), the machine further comprises a first driving rotational surface (61) linked to the piston rod (6) and a corresponding second driving rotational surface (71) linked to the sliding plate (7), a clearance being left between said first driving rotational surface (61) and said second driving rotational surface (71) and said surfaces being adjacent.

Abstract: A method and apparatus for analyzing a hydraulic pump in real-time. A pressure signal is provided representing a discharge pressure of the hydraulic pump, and the pressure signal is decomposed into a plurality of levels. Each of the plurality of levels has at least one frequency band. A feature pressure signal is located in at least one of the frequency bands and compared to a reference wavelet to determine if a fault exists in the hydraulic pump and/or a type of defect in the hydraulic pump.

Abstract: The electrically motorized pump has a low energy loss because it uses of the shaft and the sleeve made from synthetic resin composition obtained by uniformly dispersing fine powder of RBC or CRBC in a resin. The typical process for the production of a synthetic resin composition for making the sleeve bearing for the pump for use in water includes kneading with a resin the fine powder of RBC or CRBC at a temperature in the neighborhood of the melting point of the resin, and thereby uniformly dispersing the fine powder of RBC or CRBC in the resin. Fibers, such as glass fibers, may be blended with the fine powder of RBC or CRBC and the resin.

Abstract: A piston pump for brake systems the region of the outlet valve is provided with a pressure chamber, an opposing chamber, and a flexible wall that divides the pressure chamber from the opposing chamber. The flexible wall has an elastically resilient diaphragm that is supported in an elastically flexible body.

Abstract: A high temperature splash plate for use in the combustor of a gas turbine engine that also is a specular optical reflector. A thin layer of a high temperature reflector is applied to the surface of the splash plate of the component that forms a boundary for hot combustion gases. The component typically includes a thermal barrier coating overlying the high temperature metallic component that permits the component to operate at elevated temperatures. The thermal barrier coating must be polished in order to provide a surface that can suitably reflect the radiation into the gas flow path. A thin layer of the high temperature reflector then is applied over the polished thermal barrier coating by a process that can adequately adhere the reflector to the polished surface without increasing the roughness of the surface. The surface reflects radiation in the direction of the turbine back into the hot gas flow path. The reflected radiation is not focused onto any other hardware component.

Abstract: An improved motor-driven pump is provided for delivering a flow of water in a swimming pool or spa environment or the like. The improved pump includes a motor mounted within a motor housing having a seal plate mounted at one end thereof. The seal plate carries a shaft bearing for rotatably supporting a drive shaft having an outboard end connected to an impeller disposed within a pump chamber defined cooperatively by the seal plate and a volute housing mounted thereon. A primary seal assembly includes an axially spring-loaded dynamic seal ring carried on the drive shaft for rotation therewith and for running engagement with a stationary bushing carried by the seal plate. A secondary seal assembly is positioned axially between the primary seal assembly and motor bearing, and includes at least one slinger disk for radially outwardly slinging any water leaking past the primary seal assembly through a vent chamber.

Abstract: A rod body (30) is formed of magnetostrictive material and includes one end portion (30a) fixed, and a piston (35) is fixed to the other end portion (30b) of the rod body (30). The piston (35) is slidably disposed within a cylinder (36) in which there is formed a pump chamber (37). A suction port (39) for sucking lubricating oil into the pump chamber (37) is formed in the cylinder (36), while a suction valve (40) for preventing the lubricating oil from flowing out from the suction port (39) is disposed in the suction port (39). In the cylinder (36), there is disposed a nozzle (20) which communicates with the pump chamber (37) and has a sectional area smaller than the lubricating oil passage sectional area of the suction valve (40). There is disposed a coil (43) outside the rod body (30) and, to the coil (43), there is connected a control device (6) for controlling the supply of a current to be supplied to the coil (43).

Abstract: A pump leak monitor for use with a peristaltic pump comprises a pump housing and a pair of electrical contacts disposed along a bottom end of the pump housing. The electrical contacts are located such that the contacts are immersed in fluid when the pump is leaking. The fluid conducts electricity across the contacts and thereby closes an electrical circuit for providing an indication that a leak has been detected. By measuring an electrical parameter in the circuit, the pump leak monitor is capable of measuring the conductivity of the fluid in the pump housing. As a result, the pump leak monitor is capable of differentiating between different types of fluid.

Abstract: A drive system for driving a mixer impeller shaft in a vessel, including a motor; an outer magnet rotor driven by the motor; a bearing housing mountable to a vessel; and a drive shaft rotatable in the bearing housing. An inner magnet rotor is connected to the drive shaft and a manifold plate is connected to the bearing housing. A canister is connected to the manifold plate so that a chamber is defined in the bearing housing having an inlet port for directing fluids into the chamber. A plurality of ports extend through the manifold plate providing fluid communication from the chamber to the inside of the canister; and a plurality of ports through the inner magnet rotor provide fluid communication from the inside of the canister through the inner magnet rotor. A fluid path is provided from the chamber through the ports, around the inner magnet motor, and through the inner magnet rotor, which fluid path is sealed from the environment by the canister.

Abstract: In an electric compressor, in which an electric motor and a compressor driven thereby are integrated, in order to prevent a reduction in the durability of the electric motor and the like due to heat conducted from heat radiating bodies such as drive circuits, a fluid, prior to being taken into the compressor portion, is circulated through the electric motor portion as a medium for cooling. In this case, a plurality of cooling medium passages for example are provided parallel to the axis of rotation, and the endothermic capacity of passages formed in the vicinity of heat radiating bodies is made greater than the endothermic capacity of passages formed in other portions.