ADAPTABLE DEMAND DILUTION OXYGEN REGULATOR FOR USE IN AIRCRAFTS
First Claim
1. An adaptable demand dilution oxygen regulator for use inside a pressurized aircraft cabin, comprising:
- an oxygen initiation and demand regulation system adapted to be responsive to differential gas pressure in a first altitude range based on a pulmonary capacity of a person flying in the pressurized aircraft cabin, wherein the oxygen initiation and demand regulation system controls flow of pressurized oxygen to a breathing outlet by mixing the pressurized oxygen with aircraft cabin air during the first altitude range; and
a cabin air dilution and delivery system coupled to the oxygen initiation and demand regulation system, wherein the cabin air dilution and delivery system is adapted to be responsive to differential gas pressure in a second altitude range, and wherein the cabin air dilution and delivery system gradually stops dilution of the aircraft cabin air and outputs approximately about 100% pressurized oxygen into a breathing apparatus via the breathing outlet during the second altitude range, and wherein the first altitude range and the second altitude range are substantially below a cabin pressure altitude of approximately about 7000 feet, and wherein the first altitude range is lower than the second altitude range.
2 Assignments
0 Petitions
Accused Products
Abstract
A system and method of automatic delivery of appropriate flow rate of oxygen to a person flying in a pressurized aircraft cabin is disclosed. In one embodiment, an adaptable demand dilution oxygen regulator for use inside a pressurized aircraft cabin, includes an oxygen initiation and demand regulation system adapted to be responsive to differential gas pressure in a first altitude range based on a pulmonary capacity of a person flying in the pressurized aircraft cabin and to control flow of pressurized oxygen to a breathing outlet during the first altitude range. The adaptable demand dilution oxygen regulator further includes a cabin air dilution and delivery system, coupled to the oxygen initiation and demand regulation system, adapted to be responsive to differential gas pressure in a second altitude range and to output progressively enriched mixture till 100% pressurized oxygen into a breathing apparatus during the second altitude range.
-
Citations
19 Claims
-
1. An adaptable demand dilution oxygen regulator for use inside a pressurized aircraft cabin, comprising:
-
an oxygen initiation and demand regulation system adapted to be responsive to differential gas pressure in a first altitude range based on a pulmonary capacity of a person flying in the pressurized aircraft cabin, wherein the oxygen initiation and demand regulation system controls flow of pressurized oxygen to a breathing outlet by mixing the pressurized oxygen with aircraft cabin air during the first altitude range; and a cabin air dilution and delivery system coupled to the oxygen initiation and demand regulation system, wherein the cabin air dilution and delivery system is adapted to be responsive to differential gas pressure in a second altitude range, and wherein the cabin air dilution and delivery system gradually stops dilution of the aircraft cabin air and outputs approximately about 100% pressurized oxygen into a breathing apparatus via the breathing outlet during the second altitude range, and wherein the first altitude range and the second altitude range are substantially below a cabin pressure altitude of approximately about 7000 feet, and wherein the first altitude range is lower than the second altitude range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for automatic delivery of appropriate flow rate of oxygen from a portable personal oxygen bottle through a breathing apparatus to a person flying in a pressurized aircraft cabin, comprising:
-
presetting a first aneroid valve that is responsive to differential gas pressure in a first altitude range to close at a oxygen starting altitude point based on apriori lung capacity test; initiating a flow of oxygen from the portable personal oxygen bottle using a quarter turn switching regulator connected to the portable personal oxygen bottle via a minimum flow area of the main valve to output a mixture of the flow of oxygen and aircraft cabin air into a mixing chamber; gradually closing the first aneroid valve in response to increasing aircraft cabin pressure altitude to stop a pilot flow of oxygen during the first altitude range; and opening a main valve upon closing the first aneroid valve to flow pressurized oxygen into the mixing chamber, wherein the aircraft cabin air is outputted into the mixing chamber such that the pressurized oxygen and the outputted aircraft cabin air are having substantially same pressure, and wherein the mixture of aircraft cabin air and pressurized oxygen in the mixing chamber is outputted into the breathing apparatus via a breathing outlet. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
Specification