Pumps – Motor driven – Including means utilizing pump fluid for augmenting cooling,...
Patent
1990-01-18
1991-09-10
Smith, Leonard E.
Pumps
Motor driven
Including means utilizing pump fluid for augmenting cooling,...
92157, 184 618, F04B 3906, F04B 3902
Patent
active
050469304
ABSTRACT:
A connecting rod having lubricating passages therein for cooling the piston assembly of a compressor. A central lubricating passage provides fluid communication between the crankshaft end portion and piston end portion of the connecting rod. The central lubricating passage conducts lubricant on the wrist pin, thus directly lubricating the wrist pin. The connecting rod also includes a plurality of branched passages branching from the central lubricating passage and extending through the piston end portion closely adjacent the wrist pin. Each of the branched passages is oriented to spray lubricant on the inner surface of the piston. Thus, the branched passages indirectly cool the wrist pin by drawing heat away from it and directly cool the piston by spraying lubricant thereon.
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Cavanaugh David L.
Smith Leonard E.
Tecumseh Products Company
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