Patent ID: 6338617
Filing Date: 2002-01-15
Classification: F04C

Abstract:
A helical-blade fluid machine comprising:a closed casing; a cylinder arranged in the casing; a roller eccentrically arranged in the cylinder; a helical blade having unequal pitches to defme compression chambers between the cylinder and the roller such that the volumes of the compression chambers gradually decrease in an axial direction; a drive mechanism for swaying the roller with respect to the cylinder, to axially move each of the compression chambers so that the volume of each compression chamber gradually decreases to compress gas contained therein; an intake pipe connected to the casing to guide gas into the casing and fill the casing with a low-pressure atmosphere; and a discharge pipe communicating with a discharge-end of one of the compression chambers, to guide compressed gas from the discharge-end of the compression chamber to the outside of the casing; wherein the cylinder, roller, and helical blade form a compression mechanism and the drive mechanism for driving the compression mechanism is electrical and is disposed under the compression mechanism; and wherein: the cylinder, roller, and blade form a compression mechanism; the drive mechanism for driving the compression mechanism is electrical; the compression mechanism is arranged above the drive mechanism; the compression mechanism and drive mechanism share a shaft that is rotatable and passes through the compression and drive mechanisms; and the shaft is rotatively supported by two support frames, arranged on opposite sides of the drive mechanism, that are fixed to the casing at an intermediate position and a bottom position of the closed casing.