| ANEST IWATA CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20110300012 | SCROLL EXPANSION MACHINE - The rotating shaft is connected to the generator; the high-pressure steam s is introduced to the expansion chamber b through the guide passage; when the energy of the high-pressure steam s during expansion process revolves the revolving scroll, the generator regenerates electric power. The connecting housing is provided with the inlet opening and the outlet opening; the ventilation blades are fitted to the rotating shaft. When the ventilation blades rotate, the outside air is introduced (inside of the housing) from and through the inlet opening; the air passes by the air opening and the backside of the revolving scroll, and is discharged through the outlet opening. Thus, by the approach that the air passage is formed inside of the connecting housing and the scroll housing, the high-pressure steam s is prevented from being directed toward the backside of the revolving scroll. | 12-08-2011 |
| 20090246040 | Multistage Vacuum Pump Unit and an Operation Method Thereof - A multistage vacuum pump unit can save a power requirement and prevent the gas discharged outside of the unit from flowing-back inside the pump unit. A plurality of vacuum pumps are connected in series to form the multistage vacuum pump unit. A suction inlet of a first stage vacuum pump thereof is connected to a to-be-vacuumized container so that the space inside of the container becomes under a high vacuum condition. In an operating method, part of the gas discharged into a first intermediate passage from the first stage vacuum pump is branched during a low vacuum operation, and discharged toward an air atmosphere through a low conductance line provided with check valves that prevent the branched gas from flowing back. | 10-01-2009 |
| 20090004037 | Magnetic Bearing and Coupling Device - A follower shaft is rotatably supported coaxially with a driving shaft. An inner rotary permanent magnet having poles in a radial direction is fixed around an outer circumference of the end of the follower shaft. On the inner circumferential surface of a cylindrical coupling, an outer rotary permanent magnet is fixed such that opposite poles face each other between the inner rotary permanent magnet and the outer rotary permanent magnet. A fixed permanent magnet is fixed such that like poles face each other between the fixed permanent magnet and the inner rotary permanent magnet. Thus, rotation of the driving shaft is transmitted to the follower shaft without contact. | 01-01-2009 |
| 20080265518 | PISTON RING AND A FLUID SUCKING/DISCHARGE DEVICE WITH THE PISTON RING - A piston ring is made of high polymers and fits in a circumferential groove of a piston in a cylinder of a compressor or a vacuum pump. A plurality of cuts are formed in the piston ring. When the piston ring is turned inside up or pulled out radially, it is stretched out. The piston ring can easily be fitted in the circumferential groove of the piston to prevent a fluid from leaking through between the piston and the cylinder with sufficient sealing capability. | 10-30-2008 |
| 20080240965 | ROTOR SHAFT SEALING METHOD AND STRUCTURE OF OIL-FREE ROTARY COMPRESSOR - A rotor shaft sealing method for an oil-free rotary compressor is provided, with which occurrence of lubrication oil intrusion into the compression chamber of the compressor which is liable to occur when negative pressure is produced in the compression chamber, is prevented. With a rotor shaft sealing structure composed such that two shaft seal means ( | 10-02-2008 |
| 20080240964 | SHAFT SEAL DEVICE FOR OIL-FREE ROTARY COMPRESSOR - A shaft seal device is provided, with which an optimum radial clearance is always maintained between the inner circumferential surface of a carbon ring and an outer circumferential surface of a rotor shaft sleeve when temperature thereof varies in operation of the oil-free rotary compressor, and gas leak through the radial clearance can be suppressed to a minimum not influenced by operation condition of the compressor and intrusion of lubricating oil into the rotor chamber is prevented. As a result, an oil-free rotary compressor can be operated to discharge clean compressed gas not contaminated with lubrication oil. The shaft seal device to be located between the rotor chamber and rotor shaft bearing with a very small radial clearance retained between the inside surface of the shaft seal device and the outer surface of the rotor shaft sleeve | 10-02-2008 |
| 20080240963 | ROTOR SHAFT SEALING STRUCTURE FOR OIL-FREE ROTARY COMPRESSOR - A rotor shaft sealing structure of an oil-free rotary compressor is provided, with which is reduced a risk of occurrence of lubrication oil intrusion into the compression chamber ( | 10-02-2008 |
| 20080240957 | SCROLL FLUID MACHINE - The object is to provide a scroll fluid machine in which relative revolving motion is produced between two scrolls engaging with each other without using conventional Oldham coupling or pin crank type mechanism which has sliding parts. The scroll compressor | 10-02-2008 |
| 20080240956 | SCROLL FLUID MACHINE - A goal of the present invention is to realize a relative revolving (orbiting) movement between a drive scroll and a driven scroll without a sliding element configuration such as used in conventional Oldham's coupling mechanisms and/or pin-crank mechanisms.
| 10-02-2008 |
| 20080240953 | ROTARY COMPRESSOR UNIT AND METHOD OF CONTROLLING OPERATION THEREOF - The compressor unit having at least two compressors, for example a low pressure stage compressor | 10-02-2008 |
