Thu, 03 Nov 2016 08:00:00 EDTAn electronic pump is provided, which includes a rotor assembly. The rotor assembly includes an impeller and a rotor which are separately injection-molded respectively. The material for injection-molding the rotor includes a magnetic material, and the material for injection-molding the impeller does not include a magnetic material. The impeller includes a first fitting portion, the rotor includes a second fitting portion, the impeller and the rotor are cooperated by the first fitting portion and the second fitting portion, and the impeller and the rotor are fixed with respect to each other by a fixing device. In this way, the impeller and the rotor may be made respectively by different materials, and an ordinary plastic material may be employed for the impeller, which may reduce the cost of manufacturing material of the rotor assembly.
Thu, 03 Nov 2016 08:00:00 EDTIn a separating wall, which separates a vacuum region from a region under atmospheric pressure, pins are provided as a current lead-through. The pins are cast in, for example, glass. A plug-in contact is arranged on a separate carrier plate in order to prevent force or stresses, which can occur in particular because of tolerances, from being introduced into the glass. The carrier plate is connected to the control device by a flexible cable.
Thu, 03 Nov 2016 08:00:00 EDTA centrifugal pump is provided, which includes a rotor assembly, the rotor assembly includes an impeller including multiple blades and a blade fixing portion, the blades and the blade fixing portion are integrally formed by injection molding, and the blades are circumferentially distributed at equal intervals along the blade fixing portion. The blade includes a first side, a second side, a blade top portion and a blade root portion, and the blade root portion and the blade fixing portion are fixed by injection molding. The blade top portion is a cantilever end of the blade, and the first side and the second side are arranged between the blade root portion and the blade top portion. The rotor assembly arranged in such manner can improve the hydraulic efficiency and lift of the centrifugal pump.
Thu, 03 Nov 2016 08:00:00 EDTA compressor is provided including a housing having a suction inlet and a discharge outlet. A compression mechanism within the housing is configured to receive a vapor at the suction inlet and to provide a compressor vapor to the discharge outlet. A volume index valve is arranged near the discharge outlet. The volume index valve includes a piston positioned within a hollow chamber and configured to move between a closed position and an open position to provide a bypass flow path from an intermediate portion of the compression mechanism to the discharge outlet. The piston is configured to move within the chamber automatically in response to the operating pressure of the vapor within the compressor.
Thu, 03 Nov 2016 08:00:00 EDTA metering pump includes a motor having a motor shaft extending through a drive housing, a carriage assembly disposed around the motor shaft and within the drive housing, a plunger return block mounted to the carriage assembly, a piston disposed along an axis, a carriage bearing disposed on the motor shaft and within the carriage assembly and slidably coupled to the carriage assembly, a cam coupled to the motor shaft to rotate with the motor shaft, and a bearing disposed around the cam to rotate therewith and to contact the stroke adjuster and the plunger return block. The piston also includes a stroke adjuster mounted to the carriage assembly, a plunger having a button-shaped protrusion end, and a drive shaft having a first end connected to the stroke adjuster and a second end having a hook protrusion configured to receive and engage the plunger button-shaped protrusion end.
Thu, 03 Nov 2016 08:00:00 EDTA 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.
Thu, 03 Nov 2016 08:00:00 EDTA system and method is provided for efficiently managing the compression of gas depending on the operating conditions and operating mode of the compression system, wherein the system includes a booster compressor, a booster compressor bypass, a conduit connected to the booster compressor and the booster compressor bypass conduit, a means for selectively directing the flow of the gas based on current operating conditions, to the booster compressor bypass or the booster compressor and a baseline compressor connected to both the booster compressor and the booster compressor bypass conduit.
Thu, 03 Nov 2016 08:00:00 EDTA compressor includes a motor, a drive shaft driven by the motor and connected thereto, a crank mechanism connected to the drive shaft, at least one compressed-air generation apparatus that is driven by the crank mechanism and is designed to generate compressed air, a crankcase that has an inner chamber wall in the shape of a hollow body, which receives the drive shaft at least in portions, an outer chamber wall that is spaced apart from the inner chamber wall radially with respect to the drive shaft, and a dividing wall, and a compressed-air storage container that is designed to receive compressed air generated by the compressed-air generation apparatus. The compressed-air storage container is formed by the inner chamber wall, the outer chamber wall, the end wall and the dividing wall.
Thu, 03 Nov 2016 08:00:00 EDTA metering pump includes a motor having a motor shaft extending through a drive housing, a carriage assembly disposed around the motor shaft and within the drive housing, a plunger return block mounted to the carriage assembly, a piston disposed along an axis, and a carriage bearing disposed on the motor shaft and within the carriage assembly, slidably coupled to the carriage assembly, and configured to provide a second contact point for maintaining the alignment of the carriage assembly with the axis of the piston. The piston further includes a stroke adjuster mounted to the carriage assembly to provide a first contact point for maintaining the alignment of the carriage assembly with the piston, a drive shaft connected to the stroke adjuster, and a plunger connected to the drive shaft. The metering pump also includes a cam coupled to the motor shaft to rotate with the motor shaft and a bearing disposed around the cam to rotate therewith and to contact the stroke adjuster and the plunger return block.
Thu, 03 Nov 2016 08:00:00 EDTA hydraulic power unit for controlling a work unit includes a reservoir for storing hydraulic fluid, a hydraulic pump for moving fluid from the reservoir, a prime mover for driving the hydraulic pump, and a manifold for controlling flow between the work unit, pump and reservoir. The manifold includes a spool valve assembly with a spool that is translatable within a spool bore to provide this control. The spool bore is fluidly connected to the work unit via a pair of work passages, to the hydraulic pump via a pair of supply passages, and to the reservoir via a return passage. The manifold is configured to direct fluid flow received from the work unit at either of the work passages to the reservoir while bypassing the pump by preventing fluid flow through the spool bore in a direction from either of the work passages to either of the supply passages.
Thu, 03 Nov 2016 08:00:00 EDTA microfluidic pump comprising a cylindrical chamber, transfer ports comprising an inlet port and an outlet port positioned on the cylindrical chamber, a magnet member attached outside the cylindrical chamber, a magnetic piston in sliding communication with inner walls of the cylindrical chamber, a magnetic material, and a valve member. The magnetic material self assembles to form a seal plug separating the inlet and outlet port, where the seal plug forms a link between the magnet member and the magnetic piston to rotate the magnetic piston along the inner wall of the cylindrical chamber, where a working fluid suctioned within the cylindrical chamber is discharged at the outlet port during a movement of the magnetic piston from the inlet to outlet port. The valve member positioned at the outlet port prevents the backflow of the working fluid towards the inlet port after the magnetic piston rotates past the outlet port.