Slotted rotor lubrication system

Details Slotted rotor lubrication system Slotted rotor lubrication system

1989-12-15

1991-04-16

Koczo, Michael

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

4174237, 184 618, F04B 3902

Patent

active

050078089

ABSTRACT:
A hermetic vertical shaft compressor for refrigeration or air conditioning uses a single-stage centrifugal pump formed in the rotor assembly to lubricate bearing surfaces. Oil is picked up from a sump at the base of the rotor, and is thrown into an annulus in the rotor. From here the oil proceeds up axial slots formed in the rotor laminations to an upper annulus, where it feeds lubrication channels in the upper bearing. The shaft has a reduced diameter thereby reducing material costs and reducing hystersis and eddy current losses, while achieving increased pumping capacity and pressure.

REFERENCES:
patent: 2735026 (1956-02-01), Moerk
patent: 2769105 (1956-10-01), Altschwager
patent: 3790309 (1974-02-01), Volz
patent: 4138862 (1979-02-01), Muller
patent: 4488855 (1984-12-01), Butterworth et al.
patent: 4623306 (1986-11-01), Nakamura et al.

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