Patent ID: 9346555
Filing Date: 2016-05-24
CPC Classification: A62C,B64D,F02C,F04C,Y02T

Claim Text:
1. An on board inert gas generation system for use in an aircraft having a source of low pressure air, the gas generation system comprising: a variable speed rotary positive displacement compressor including an inlet configured to receive a first portion of the low pressure air and an outlet in flow communication with an air separation module, wherein the variable speed rotary positive displacement compressor is configured to provide variable flow to the air separation module; a heat exchanger disposed in a flow path between the positive displacement compressor and the air separation module, wherein the heat exchanger includes a heating pass and a cooling pass for fluid, wherein compressed air from the positive displacement compressor is passed along the cooling pass thereby to reduce a temperature of the compressed air supplied to the air separation module; a first duct configured to supply a second portion of the low pressure air to the heating pass of the heat exchanger; and a second duct configured to supply the second portion of the low pressure air from the heating pass of the heat exchanger to an input of a turbine.