Industrial Technology Research Institute

Li-Chieh Hsu

Jia-Ruey Wu

Chien-Ching Hsueh

Hung-Ying Jan

The invention provides a high-speed rotor assembly for an overhung centrifugal compressor comprising a housing, a rotor component, an oil film damper and an impeller, which is adapted for connecting to a power output mechanism, wherein the rotor component is arranged inside the housing, and the oil film damper is disposed between the impeller and the rotor component, and the impeller is coupled to the rotor component. The rotor component further comprises a sleeve, a first bearing, a second bearing, a transmission shaft, a plurality of resilient elements and a spacer, wherein an end of the sleeve is connected to one of the circular rib by a screw while another end thereof is handing freely, and a oil film damper is disposed between the sleeve and another circular rib. Moreover, the first bearing and the second bearing are respectively arranged at the two side of the sleeve, and the spacer is arranged between the two bearings with the two end thereof respectively abutted against the inner races of the two bearings. Further, the transmission shaft is disposed passing through the spacer and the two bearings, and the impeller is disposed at the second side of the housing and is coupled to an end of the transmission shaft.

High-speed rotor assembly for an overhung centrifugal compressor

The present invention provides a micro loop thermosyphon cooler, having a thermal absorption unit and a condenser sequentially arranged therein, wherein the condenser is arranged at a position higher than that of the thermal absorption unit by a height. The thermal absorption unit further comprises a microchannel system formed by superimposing a cover on a substrate having a plurality of micro-grooves arranged thereon, so that the microchannel system is capable of allowing a fluid with a plurality of magnetic particles to flow in and through. In this regard the thermal absorption unit is used for absorbing thermal energy and thus enabling the fluid to vaporize and generate bubbles accordingly for elevating and driving the remaining fluid to flow into the condenser for discharging heat. Moreover, the condenser is positioned over the thermal absorption unit by a height while coupled to the outlet of the thermal absorption unit by an inlet thereof via a conduit, and coupled to an inlet of the thermal absorption unit by an outlet thereof via another conduit. In this regard, the condenser is capable of condensing the vaporized fluid and remixing the same with unvaporized fluid passing so as to enable the remixed fluid to flow back to the thermal absorption unit by the action of gravity.

Device of micro loop thermosyphon for ferrofluid power generator

A ferrofluid power generator with micro vortex generator is disclosed, which is capable of generating an induced current by enabling a ferrofluid having a plurality of magnetic particles to flow in a closed circuit, the device comprising a vortex generator and a induced current unit. The vortex generator further comprises a first inlet, a first outlet and a plurality of cavities, which is capable of accelerating the rotation speed of the magnetic particles by virtue of employing the plural cavities to enable the magnetic particles to rotate while the ferrofluid passing through the plural cavities. The induced current unit is substantially a tube having a second inlet and a second outlet, where the second inlet is coupled to the first outlet of the vortex generator for accepting the ferrofluid with rotating magnetic particles to flow therein and through so as to induce a change of magnetic flux to occur and generate an induced current accordingly.

Device of micro vortex for ferrofluid power generator

A device and method for ferrofluid power generator and cooling system, wherein the waste heat of electronic device is used as a heat source to vaporize fluid and form bubbles as a forwarding pump of the ferrofluid. The fluid with magnetic nano particles is pumped forward and rotated by a fluid mechanism, then passes through a high density coil to result in the time varying magnetic flux and induced current. No additional heat-dissipating device is needed for this invention to dispose the waste heat, which requires the waste heat to produce electricity, which provides cooling and saves power.

Growing community of inventors

Hsinchu, Taiwan

Li-Chieh Hsu