Pumps – With muffler acting on pump fluid
Patent
1983-07-25
1985-05-21
Look, Edward K.
Pumps
With muffler acting on pump fluid
181403, 417372, 417410, 417902, F04B 2100
Patent
active
045183236
ABSTRACT:
An improved hermetic motor compressor is disclosed which incorporates an improved discharge muffler arrangement wherein the discharge muffler is intergrated with an end portion of the shell and remote from the driving motor whereby heating of the discharge gas by the motor is substantially eliminated and a relatively large surface area is provided to transfer heat to the surrounding atmosphere. Additionally, the compressor incorporates an improved lubrication system wherein in one embodiment a pressure responsive valved vent is provided for the substantially closed crankcase and operates to create a pressure differential between an oil sump and the upper end of an oil distribution passage thereby improving lubricant flow to the bearings as well as providing means for returning lubricant from the crankcase to the sump. In another embodiment a rotating valved vent is provided which operates to selectively place this upper end of an oil distribution passage in communication with the crankcase.
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Elson John P.
Muir Earl B.
Riffe Delmar R.
Copeland Corporation
Look Edward K.
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