Ventilation apparatus
AssigneeAviation Works Ltd
InventorsRob Boyle, Tim Wakeford
Life of this patent
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Abstract
An apparatus for preparing a ventilation gas mixture, the apparatus comprising: a first gas feed configured to receive carbon dioxide via a first gas valve; a second gas feed configured to receive oxygen via a second gas valve; a gas mixing device configured to receive the carbon dioxide and the oxygen from the first and second gas feeds and combine the carbon dioxide with the oxygen in the gas mixing device to form a ventilation gas mixture; an adjuster configured to adjust the first and second gas valves between an open position and a closed position in order to adjust the relative amounts of carbon dioxide and oxygen forming the ventilation gas mixture; and wherein the adjuster is configured to adjust the first and a second gas valves based on an air pressure applied to the apparatus.
Claims11
An apparatus for preparing a ventilation gas mixture, the apparatus comprising:
- a first gas feed configured to receive carbon dioxide via a first gas valve;
- a second gas feed configured to receive oxygen via a second gas valve;
- a gas mixing device configured to receive the carbon dioxide and the oxygen from the first and second gas feeds and combine the carbon dioxide with the oxygen in the gas mixing device to form a ventilation gas mixture;
- an adjuster configured to adjust the first and second gas valves between an open position and a closed position in order to adjust the relative amounts of carbon dioxide and oxygen forming the ventilation gas mixture;
- and
- wherein the adjuster is configured to adjust the first and second gas valves based on an air pressure applied to the apparatus,
- wherein the adjuster comprises a diaphragm connected to the first gas valve, and
- wherein the first gas valve is adjusted based on the air pressure applied to the diaphragm.
A method of adjusting first and second gas valves in an apparatus, wherein the apparatus comprises a gas mixing device, the method comprising the steps of:
- receiving, in a gas mixing device, carbon dioxide from a first gas feed via the first gas valve;
- receiving, in the gas mixing device, oxygen from a second gas feed via the second gas valve;
- combining, in the gas mixing device, the carbon dioxide with the oxygen to form a ventilation gas mixture;
- and
- adjusting, by an adjuster, the first and second gas valves between an open position and a closed position in order to adjust the relative amounts of carbon dioxide and oxygen forming the ventilation gas mixture;
- wherein adjusting the first and second gas valves is based on an air pressure that is applied to the apparatus,
- wherein the adjuster comprises a diaphragm connected to the first gas valve, and
- wherein adjusting the first gas valve comprises adjusting the first gas valve based on the air pressure applied to the diaphragm.
Dependencies are inferred from the claim text.