US 11,701,527 B2
Enclosed system environment pressure regulator
John T. Barker, Overland Park, KS (US); and Bryce Baker, Raymore, MO (US)
Assigned to B/E Aerospace, Inc., Winston-Salem, NC (US)
Filed by B/E Aerospace, Inc., Winston-Salem, NC (US)
Filed on Aug. 31, 2020, as Appl. No. 17/8,438.
Prior Publication US 2022/0062663 A1, Mar. 3, 2022
Int. Cl. A62B 7/02 (2006.01); A62B 9/02 (2006.01); B63C 11/24 (2006.01)
CPC A62B 7/02 (2013.01) [A62B 9/022 (2013.01); B63C 11/24 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An enclosed system breathing environment pressure regulator, comprising:
a pressure manifold coupled with a pressurized cylinder assembly and an enclosed breathing environment, the pressure manifold including:
at least one solenoid valve configured to produce a variable bolus of oxygen when powered to an open position;
at least one manifold sensor sited between the at least one solenoid valve and the pressurized cylinder assembly;
at least one flow pressure sensor sited between the at least one solenoid valve and the enclosed breathing environment, the flow pressure sensor configured to measure 1) a bolus pressure of the variable bolus of oxygen and 2) a function of the at least one solenoid valve;
a regulated output sensor sited between the flow pressure sensor and the enclosed breathing environment, the regulated output sensor configured to measure a regulated output pressure and a regulated output temperature;
the pressure manifold configured to receive a flow of pressure regulated oxygen from the pressurized cylinder assembly and supply the at least one solenoid valve with the flow of pressure regulated oxygen, the pressure manifold further configured to route the variable bolus of oxygen to the enclosed breathing environment;
a microcontroller associated with the pressure manifold and operatively coupled with 1) at least one oxygen cylinder pressure sensor associated with the pressurized cylinder assembly, 2) the manifold sensor, 4) the at least one solenoid valve, 4) the flow pressure sensor, and 5) the at least one regulated output sensor;
a tangible, non-transitory memory configured to communicate with the microcontroller, the tangible, non-transitory memory having instructions stored therein that, in response to execution by the microcontroller, cause the microcontroller to:
monitor the bolus pressure via the flow pressure sensor;
monitor a manifold data via the at least one manifold sensor, the manifold data including a manifold pressure and a manifold temperature;
monitor a regulated output data via the regulated output pressure sensor, the regulated output data including the regulated output pressure and the regulated output temperature;
send an initiation command to the pressurized cylinder assembly to initiate the flow of pressure regulated oxygen;
determine an adjusted pulse width (APW) and a pulse interval based on the manifold data and a temperature-compensated regulated output pressure;
apply at least one timed power pulse to command the at least one solenoid valve to the open position for a duration of the APW at the pulse interval to produce the variable bolus of oxygen;
verify the open position of the at least one solenoid valve based on the bolus pressure;
continuously adjust the APW based on the temperature-compensated regulated output pressure and the manifold data.