Parker-hannifin Corporation

Nazih Khatib

Michael Paul Wells

Jeffrey M Grau

Michael W Trumbower

An evaporating heat exchanger () comprises a multitude of parallel channels () extending between vertical header pipes () and forming flow passages () from the inlet chamber () and to the outlet chamber (). A venturi device () is positioned within the inlet chamber () to ensure even mass distribution of refrigerant to the flow passages ().

Evaporating heat exchanger

A service valve for a refrigerant system comprising a valve body and a system port. The valve body has at least one fluid passage integrated therein including a longitudinal bore. An orifice is located at one end of the bore. An annular protrusion axially extends from the valve body and is symmetrical about the orifice. A valve seat generally surrounds the orifice. The system port includes a valve stem having a first end, a second end, and a bore integrated within. The stem is axially movable within the annular protrusion between at least a first position in which the orifice is closed when the valve stem first end sealingly abuts the valve seat and a second position in which the orifice is open when the valve stem first end is offset from the valve seat. The valve stem is restricted from moving further away from the valve body by the annular protrusion.

Self-contained isolated port

A distributor, for use in a refrigerant system for conveying refrigerant between an expansion device and an evaporator, having a longitudinal body, an actuator, a plug, a first nozzle, and a second nozzle. The longitudinal body having a first end, a second end, a longitudinal passage between the first and second ends. The first nozzle being affixed within the passage. The second nozzle being rotatable within the passage for alignment and misalignment with the first nozzle. The second nozzle having a plurality of gear teeth engageable with the actuator, which is adjustable. A method of mixing refrigerant fluid while passing through the distributor.

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Ann Arbor, MI, United States of America

Nazih Khatib