System for producing reduced pressure on board of an aircraft

Details System for producing reduced pressure on board of an aircraft System for producing reduced pressure on board of an aircraft

1994-03-14

1994-12-13

Hruskoci, Peter A.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Discharge of treated material

210120, 210136, 210167, 210188, 210258, 4321, 4431, 2441185, B64D 1102

Patent

active

053727100

ABSTRACT:
A system for producing reduced pressure on board of an aircraft cooperates with at least one vacuum toilet for flushing the toilet. A reduced pressure is generated by a pump for transporting of refuse including water waste into a collection tank without using any pressure difference between the pressure in the aircraft cabin and the pressure outside the cabin. The suction inlet of the pump is connected through a filter to the collection tank and the pressure side of the pump is connected to a nozzle in an ejector, the suction inlet of which is connected to the toilet. A funnel-shaped ejector discharge port is connected through a return conduit to the collection tank, preferably through a water separator. A closed water circulating circuit is formed by the pump, the tank, the filter, and the ejector so that refuse and waste water pass directly through the ejector into the tank. A water separator is connected through a waste air discharge pipe or conduit either to a filter for returning the air into the cabin or to a discharge valve through the wall of the aircraft body.

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