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AssigneeHitachi, Ltd.
InventorsSeiji Tsuru, Shinichi Hirose, Junji Okita, Tadashi Kaneki, Katsuaki Kikuchi
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Compressor bodies, an accelerator and a main motor are disposed on a base, while an intercooler, an aftercooler, an oil cooler and a coolant cooler are disposed perpendicular to the axial direction of the motor so that the directions, in which the tube nests of the gas coolers are drawn out, are made to be the same. A control panel having a maintenance display is mounted on a front panel composed of panel portions which are mounted pivotally around respective remote or opposite side ends. Portions to be inspected daily are disposed near the front panel and one side panel adjacent thereto. The compressor bodies including rotors that have been coated with a melted and solidified substantially homogeneous and continuous layer of a tetrafluoroethylene-perfluoroalkylvinylether copolymer that is substantially devoid of pinholes.
A dry screw compressor comprising:
In a dry screw compressor having plural rotors, the improvement comprising a melted-and-solidified substantially homogeneous and continuous layer consisting of tetrafluoroethylene-perfluoroalkylvinylether copolymer such that the layer is substantially devoid of pin holes.
A rotor having an outer melted-and-solidified substantially homogeneous and continuous layer consisting of tetrafluoroethylene-perfluoroalkylvinylether copolymer such that the layer is substantially devoid of pin holes.
A dry screw compressor rotor produced by a process of
A dry screw compressor having male and female rotors, wherein the rotors are produced by a process of
Dependencies are inferred from the claim text.