Device for cooling motor end-turns in a compressor

Details Device for cooling motor end-turns in a compressor Device for cooling motor end-turns in a compressor

1985-02-28

1986-01-21

Croyle, Carlton R.

Pumps

Motor driven

Interrelated or common lubricating or cooling means for pump...

417902, 310 54, 184 616, 184 618, F04B 3902, H02K 900, F01M 106

Patent

active

045655030

ABSTRACT:
A cooling device for a hermetic motor-compressor unit having an outer housing with a lubricant sump in the bottom thereof, a rotatable crankshaft vertically disposed in the housing, and a motor having a stator circumferentially disposed about the rotating crankshaft and a rotor connected to the crankshaft for rotation therewith. The cooling device comprises a pick-up tube connected to the rotating crankshaft and having one end thereof extending into the lubricant sump. The pick-up tube has an axial bore disposed therein and a radial passage means disposed therein in communication with the axial bore so that, upon rotation of the crankshaft, oil is pumped upwardly through the axial bore and a portion thereof thrown radially outwardly through the radial passage means and directly against the inner surfaces of the lower end turns of the stator without having first contacted any other parts of the motor.

REFERENCES:
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patent: 4236879 (1980-12-01), Abe

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