Parker-Hannifin Corporation

Dustin B Searcy

Ted Wayne Sunderland

Eric R Coyle

Christian D Parker

Dave P Wrocklage

Kevin E Dorton

A split reversible heat pump/air conditioning system employs a single, bulbless thermostatic expansion valve (TEV) that spans both the common liquid line and the suction line. The system includes a compressor that supplies a refrigerant flow along a refrigerant pathway; an indoor heat exchanger; an outdoor heat exchanger; a reversing valve located along the refrigerant pathway between the outdoor heat exchanger and the compressor, and between the indoor heat exchanger and the compressor; and a bulbless TEV comprising a valve portion located along a common liquid line of the refrigerant pathway between the indoor heat exchanger and the outdoor heat exchanger that throttles the refrigerant flow as between the indoor heat exchanger and the outdoor heat exchanger, and a sensor portion for sensing pressure and temperature located along a suction line of the refrigerant pathway between the compressor and the reversing valve.

Air conditioning and heat pump system with bulbless thermostatic expansion valve

A refrigeration system includes a compressor, a condenser, a receiver, an expansion device, and an evaporator in fluid communication with one another. An electronic condenser pressure control valve is in fluid communication with an outlet of the condenser and operative to control a condition at the outlet of the condenser. A controller is operatively coupled to the electronic condenser pressure control valve, the controller including logic configured to operate the electronic condenser pressure control valve to dynamically float the discharge pressure at the condenser outlet based on at least one of one or more system conditions or one or more ambient condition.

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Washington, MO, United States of America

Dustin B Searcy