Carrier Corporation

Michael N Mantooth

Fadi S Maalouf

Bruce A Fraser

David M Ebbing

Martin C Bezon

Fredric A Ensworth

Kevin D Williams

The oil sump and suction plenum of a hermetic compressor are in continuous fluid communication through an oil equalization port assembly. Additionally, communication is established between the oil sump and the suction plenum if pressure in the oil sump is greater than that in the suction plenum by more than a few pounds. Multiplexing is established through a port in the suction plenum.

Multi-refrigerant compressor

Lubricant is pumped into a lubrication system by an oil pump. Preferably the lubricant is drawn into the pump from an unagitated source. An eccentric pump rotor is received on the crankshaft and has a circumferentially extending recess. A radially extending drive pin is secured in the crankshaft and coacts with the ends of the recess to position the rotor in accordance with the direction of rotation of the shaft.

Reverse drive oil pump

The profile of the valve stop of a discharge valve is configured such that the portion facing the free length of the valve member has a first fixed radius portion and a second, larger fixed radius portion. The valve has a leg portion and a valve head with said leg portion tapering and widening in the direction of the valve head so as to have an increasing spring rate.

Reed valve with tapered leg and dual radius valve stop

The profile of the valve stop of a discharge valve is configured such that the portion facing the free length of the valve member has a first fixed radius portion and a second, larger fixed radius portion. The first and second fixed radius portions are tangent at their transition.

Growing community of inventors

Liverpool, NY, United States of America

Michael N Mantooth