Devices for controlling gas flows
AssigneeIntertechnique
InventorsGeorges Jacq, Pierre Damico
Life of this patent
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Abstract
A regulating apparatus for supplying a receiving unit with gas from a pressurized source comprises a valve piloted by a two-position solenoid valve controlled by a computer which receives data from pressure sensors. When used as a demand breathing regulator, the apparatus has a main valve for connecting a source of pressurized breathing gas and a breathing mask and a pilot diaphragm subjected to the pressure in the mask. A sensor senses the movements of a diaphragm or the pressure in the mask. A solenoid valve controls the pressure in a pilot chamber of the main valve.
Claims10
In a transportation aircraft, an apparatus for distributing oxygen to passenger breathing masks, comprising:
- a source of oxygen under pressure;
- an oxygen distribution line;
- a first gas flow control device having an inlet connected to said source and an outlet connected to said distribution line;
- a pressure reducer having an inlet connected to said source and adapted to deliver oxygen at a predetermined reduced pressure at an outlet;
- a second gas flow control device having an inlet connected to the outlet of said pressure reducer and an outlet connected to said line;
- each of said gas flow control devices having a servo-valve controlling communication between the inlet and the outlet thereof and a pilot two-position solenoid valve for controlling said servo-valve in response to a control signal;
- sensor means for sensing the pressure in the cabin of the aircraft and delivering a signal responsive of said pressure;
- and
- computer control means connected to receive said pressure responsive signal for delivering a control signal to the solenoid valve of said first gas flow control device in response to said pressure responsive signal being lower than a threshold corresponding to a first predetermined altitude and for delivering a temporary control signal to the solenoid valve of said first gas flow control device and then a continuous control signal to the solenoid valve of said second gas flow control device in response to said pressure responsive signal being comprised between said first threshold and a second threshold corresponding to a second altitude lower than the first altitude.
Demand breathing regulator apparatus for controlling a respiratory gas flow to an inhalation mask from a respiratory gas source, comprising:
- a gas flow control device having a housing provided with an inlet for connection to the gas source and an outlet for connection with the mask;
- a servo valve controlling communication between said inlet and said outlet and defining a control chamber in said housing, said servo valve being controlled by pressure variations in said control chamber;
- first sensor means arranged to deliver an electrical signal representative of the pressure variations at said outlet;
- and second sensor means arranged to deliver an electric signal representative of the pressure at said outlet;
- electrically controlled valve means operatively associated with said control chamber to control the pressure prevailing in said chamber;
- and computer means connected to receive electrical input signals from said sensor means and to deliver electric control signals to said electrically controlled valve means in accordance with a stored program responsive to the input signals.
A g-valve apparatus for controlling a gas flow to a g-suit from a pressurized gas source, comprising:
- a gas flow control device having a housing provided with an inlet for connection to the gas source and an outlet for connection with the g-suit and formed with an inner chamber in permanent communication with said outlet;
- servo exhaust valve means controlling communication between said chamber and atmosphere and piloted by the pressure which prevails in a control compartment connected by a calibrated leak orifice to said chamber;
- a first two-position solenoid valve located to control communication between said inlet and said chamber;
- a second two-position solenoid valve controlling communication between the control compartment and the ambient atmosphere;
- acceleration sensor means carried by the housing and arranged to deliver electrice signals representative of the acceleration impressed to the housing in a predetermined direction;
- and pressure sensor means carried by the housing and arranged to deliver electric signals representative of the pressure in said chamber;
- and computer means connected to receive the signals from said sensors and arranged to deliver control signal to said solenoid valves as a function of the signals from said sensors and a stored program.
Dependencies are inferred from the claim text.