Abstract: The present invention aims to propose a fluid machine in which a magnetic coupling includes an outer rotor 32 to the cylinder-bottom part of which a drive shaft of the drive component is connected, outer rotor side magnets 33 placed on an inner periphery of the outer rotor, an inner rotor 23 fitted to a drive shaft of the fluid machine, inside the outer rotor, inner rotor side magnets 21 placed on an outer periphery of the inner rotor, whereby attraction workings and repulsion workings between the outer rotor side magnets and the inner rotor side magnets transmit torques of the drive component to the fluid machine, and a sealing assembly 20 a partition part of which is placed between the inner rotor 23 and the outer rotor 32 and surrounds a drive shaft of the fluid machine so as to secure gas-tightness, the shaft including the inner rotor 23 and the inner rotor side magnets 21; further an air ventilation device for ventilating a space inside the outer rotor by means of inducing and/or discharging ambient air

Abstract: A scroll fluid machine comprises a driving shaft having an eccentric axial portion at one end; a fixed scroll having a fixed wrap; and an orbiting scroll having an orbiting wrap and rotatably mounted to the eccentric axial portion of the driving shaft. A gas introduced through an inlet on the outer circumference of the fixed scroll is compressed by a compression chamber between the fixed and orbiting wraps towards the center and discharged through an outlet close to the center. Between the eccentric axial portion and the innermost winding portion of the fixed wrap, an adiabatic expansion chamber is formed thereby cooling the compressed gas right before discharging.

Abstract: A scroll fluid machine comprises a driving shaft having an eccentric axial portion at one end; a fixed scroll having a fixed wrap; and an orbiting scroll having an orbiting wrap and rotatably mounted to the eccentric axial portion of the driving shaft. A gas introduced through an inlet on the outer circumference of the fixed scroll is compressed by a compression chamber between the fixed and orbiting wraps towards the center and discharged through an outlet close to the center. Between the eccentric axial portion and the innermost winding portion of the fixed wrap, an adiabatic expansion chamber is formed thereby cooling the compressed gas right before discharging.

Abstract: The present invention is intended to provide an oilless scroll-type compressor which can obtain a high compression efficiency with highly accurate sealability retained and particularly has such a constitution that a chip seal fitted in each of the wrap end surfaces of stationary scrolls and an orbiting scroll is integrated with a backup seal, a discharge port in communication with a wrap groove terminal end through a through-hole is formed in a land section positioned on the interior side of a wrap inner circumferential end on the side of one scroll and situated around a shaft hole through which a main shaft is inserted, and the circumference of said discharge port is surrounded by the chip seal extended from said wrap.