US 12,391,388 B2
Recirculation air motor driven ACM
Mark G. Vignali, Simsbury, CT (US)
Assigned to Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Dec. 5, 2022, as Appl. No. 18/075,154.
Prior Publication US 2024/0182175 A1, Jun. 6, 2024
Int. Cl. B64D 13/06 (2006.01)
CPC B64D 13/06 (2013.01) [B64D 2013/0618 (2013.01); B64D 2013/0648 (2013.01); B64D 2013/0688 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A conditioning system for recirculation air of an aircraft cabin, the conditioning system comprising:
an air cycle system in fluid communication with the aircraft cabin and configured to receive a recirculation airflow from the aircraft cabin, the air cycle system comprising:
a compressor in fluid communication with the aircraft cabin, the compressor configured to receive the recirculation airflow from the aircraft cabin;
a motor configured to drive the compressor;
a heat exchanger in fluid communication with the compressor, the heat exchanger configured to receive the recirculation airflow from the compressor; and
a turbine in fluid communication with the heat exchanger, the turbine configured to receive the recirculation airflow from the heat exchanger; and
a mixing chamber disposed in fluid communication between the air cycle system and the aircraft cabin, the mixing chamber configured to mix the recirculation airflow received from the air cycle system with a conditioned airflow received from an environmental control system pack of the aircraft, wherein the conditioned airflow from the environmental control system pack is isolated from the recirculation airflow from the air cycle system upstream of the mixing chamber.