Free-jet centrifuge for cleaning lubricant oil with reduced run-on times
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United States of America Patent
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Sep 16, 2003
Grant Date -
Aug 8, 2002
app pub date -
Jan 15, 2002
filing date -
Jul 15, 1999
priority date (Note) -
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Abstract
A free-jet centrifuge which, in contrast to prior art centrifuges which are braked by bearing friction, includes a device for braking the rotor when the oil pressure falls below a predetermined value. The rotor is mounted in a slide bearing (12), which simultaneously forms the centrifuge oil inlet (23), and also is provided with a roller bearing (19), which minimize bearing friction and enables the rotor to attain the highest possible rotational speeds. Friction partners (15a, 15b) are disposed on the centrifuge housing (10) and rotor (11) and are pressed against one another by a spring (20) when the oil pressure drops below operating pressure, to stop the rotor in order to minimize run-on of the centrifuge and the noise and bearing wear associated with run-on.
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