A turbo-molecular pump comprises: a shaft to be rotatably driven by a motor; a pump rotor; multiple bolts penetrating the pump rotor from a pump suction port side to fasten the pump rotor to a pump suction port side end portion of the shaft; and a seal member configured to seal a clearance between fastening surfaces of the pump rotor and the shaft or a clearance between each bolt and the pump rotor.

A drag pump for pumping gas and a set of vacuum pumps including the drag pump are disclosed. The drag pump comprises: a rotor configured to rotate within a stator component and to drive a gas to be pumped from a gas inlet to a gas outlet; magnetic bearings for rotatably mounting the rotor within the pump; wherein at least a portion of the rotor and stator component configured to contact the gas to be pumped are configured for operation at temperatures above 130 C.

A rotation driving device includes: a casing; a stator holding part; a cylindrical member; a flange extending from an end of the cylindrical member in the axial direction toward a rotating shaft, and facing an end of the stator holding part in the axial direction; and a fastening member fastened to the end of the stator holding part in the axial direction via the flange. The flange has a through-hole extending through the flange in the axial direction, and in which the fastening member is inserted. The through-hole has a diameter smaller than that of a head of the fastening member, and larger than that of a screw part of the fastening member. The rotating shaft, the rotor, the stator, the stator holding part, and the cylindrical member are arranged in this order in the radial direction in the casing, and are concentrically arranged.

The invention relates to the field of energy, and more specifically, to wind power plants that generate electrical energy by using air flow force. The wind energy conversion module comprises a casing configured to move along the guide belt, including installed in a casing, at least, one wind energy receiver in the shape of a kite mounted on the casing, an orientation drive of the wind energy receiver relative to the wind and the casing, a control system, as well as an electricity generator configured to generate electricity when the casing moves along the guide belt and at force interaction with the contact guide rail associated with the guide belt. The control system is configured to change the modules speed by changing the braking force of the electricity generator. The invention allows to ensure a high wind energy efficiency by controlling the modules speed.

Disclosed is a ducted and balanced wind turbine, including: a spindle, a front cross bearing bracket, a radial magnetic levitation bearing, a cross bracket, an outer rotor vortex blade, a turbine shell, an outer rotor rotating body, an outer rotor armature coil, a conductive slip ring, an axial magnetic levitation bearing cross bracket, an axial magnetic leverage bearing, a rear cross bearing bracket, a spindle rolling bearing, an output wire, a carbon brush set, a permanent magnet, an inner rotor rotating body, an inner rotor vortex blade, an outer rotor dome, and a spindle dome. The radial and axial magnetic levitation devices and the carbon brush set are mounted on the inner wall of the turbine shell, forcing the outer rotor rotating body to rotate freely in the turbine shell through the magnetic levitation bearings.

[Problem] To provide a wind power generation device that, by using a structure that easily receives drag, improves the certainty of starting up on activation and is capable of increasing the amount of electric power generated from natural energy by the entire device. [Solution] A wind power generation device having a vertical rotary shaft (2) that imparts a rotating force to a wind power generation motor (7), multiple support arms (3) that extend from this vertical rotary shaft (2) and are radially arranged at equal intervals, and wind paddles (4) that are connected to the tips of the respective support arms (3), wherein each wind paddle (4) is provided with a concave panel part (41) wherein the outer surface side is curved or bent into a concave shape in a plan view and a front edge airflow reservoir part (42); that protrudes toward the outer surface side along the front edge part (45) of this concave panel part (41) in the rotating direction with the front end part thereof being curved or bent toward the trailing edge side.

The present invention relates to a compressor and a chiller system including the compressor, the compressor comprising: one or more impellers for suctioning a refrigerant in an axial direction and compressing the same in a centrifugal direction; a rotary shaft formed so as to rotate the impeller; a collar coupled to the rotary shaft so as to extend outward in the radial direction of the rotary shaft; a thrust magnetic bearing formed so as to support the collar by means of a magnetic field, thereby preventing axial movement of the rotary shaft; and a mechanical backup bearing formed so as to prevent axial movement of the rotary shaft, wherein the backup bearing is disposed so as to overlap a portion of the thrust magnetic bearing in the radial direction of the rotary shaft.

A micro flow device for separating or isolating cells from a bodily fluid or other liquid sample uses a flow path where straight-line flow is interrupted by a pattern of transverse posts. The posts are spaced across the width of an expanded collection chamber region in the flow path, extending between the upper and lower surfaces thereof; they have rectilinear surfaces, being curved in cross-sections, e.g. circular or tear-drop shaped, and are randomly arranged so as to disrupt streamlined flow. The device is oriented so that its lower surface is aligned at about 45? to the horizontal. Sequestering agents, such as Abs, which are attached to surfaces of the collection region via a hydrophilic coating, preferably a permeable hydrogel containing isocyanate moieties, are highly effective in capturing cells or other targeted biomolecules while the remainder of the liquid sample exits horizontally.

A micro flow device (11, 71) for separating or isolating cells from a bodily fluid or other liquid sample uses a flow path where straight-line flow is interrupted by a pattern of transverse posts (23, 81). The posts are spaced across the width of an expanded collection chamber region (17, 75) in the flow path, extending between the upper and lower surfaces thereof; they have rectilinear surfaces, being curved in cross-sections, e.g. circular or tear-drop shaped, and are randomly arranged so as to disrupt streamlined flow. The device is oriented so that its lower surface is aligned at about 45? to the horizontal. Sequestering agents, such as Abs, which are attached to surfaces of the collection region via a hydrophilic coating, preferably a permeable hydrogel containing isocyanate moieties, are highly effective in capturing cells or other targeted biomolecules while the remainder of the liquid sample exits horizontally.

The invention described herein pertains to a housing for a vertical-axis wind turbine, a vertical-axis wind turbine, and an apparatus comprising a housing and a vertical-axis wind turbine. For example, the disclosure below provides more efficient electricity generation from a vertical-axis wind turbine assembly. Increases in efficiency may be achieved by the housing through novel angled louvres and integrally housed electrical stators. Increases in efficiency may also be achieved through a magnetic spindle bearing and Savonius blade geometry. The turbine may be sized and configured for attachment to existing structures.