On-board refrigerant charging system

Details On-board refrigerant charging system On-board refrigerant charging system

1986-06-11

1987-10-20

Tanner, Harry

Refrigeration

Automatic control

Withdrawing or adding refrigerant from or to normally closed...

62292, 62502, F25B 4500

Patent

active

047005491

ABSTRACT:
An on-board refrigerant charging system for a vapor cycle environmental control system in an aircraft or the like. A pair of accumulation chambers are provided for holding two different refrigerant components, each chamber including an outlet. A selectively operable valve is operatively associated with each chamber outlet. An inlet is provided to the vapor cycle environmental control system. A unitary dual-vaned pump is in fluid communication with the valves and the inlet to the environmental control system. A control senses refrigerant loss and the component mixture in the control system, and actuates the pumps to replace the refrigerant loss and operates the valves according to the desired component mixture charge.

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