OIL-FREE FLUID MACHINE HAVING TWO OR MORE ROTORS
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United States of America Patent
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Issued Date -
Jun 5, 2008
app pub date -
Nov 28, 2007
filing date -
Nov 30, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An oil-free fluid machine unit is provided of which the fluid machine has two or more rotors and torque transmission between the rotors can be performed without a need of using lubrication oil thereby eliminating contamination induced by lubrication oil and without reduction of longevity of the synchronizing gears. The drive shaft 12 of the drive motor 11 is connected to the rotor shaft 14 of the fluid machine, synchronization gears 18 and 19 are attached to the rotor shafts 14 and 15 at the motor 11 side end of the rotor shafts respectively, and pulleys 16 and 17 are attached to the rotor shafts 14 and 15 at the other side ends respectively opposite to the motor 11 and a belt is looped over the pulleys so that the pulleys are rotated in counter direction to each other. At least one of the synchronization gears is made of plastic material. Thus, torque transmission between the rotors is done in two ways, via synchronization gear drive and belt drive.
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