Portable oxygen concentrator
First Claim
1. A portable oxygen concentrator, comprising:
- a plurality of sieve beds adapted to absorb nitrogen from air delivered into the plurality of sieve beds, wherein each sieve bed in the plurality of sieve beds comprising air inlet/outlet end and an oxygen inlet/outlet end;
a reservoir in fluid communication with the oxygen inlet/outlet ends of the plurality of sieve beds to store oxygen from the plurality of sieve beds;
a compressor adapted to deliver air to the air inlet/outlet ends of the plurality of sieve beds;
an air manifold defining a plurality of passages therein communicating with the compressor and the air inlet/outlet ends of the plurality of sieve beds, wherein the air manifold defines an external wall of a housing for the portable oxygen concentrator, and wherein the compressor is mounted directly on the air manifold;
a set of valves coupled to the air manifold; and
a controller coupled to the valves and adapted to selectively open and close the valves to alternately charge the plurality of sieve beds by delivering compressed air into the plurality of sieve beds through the passages in the air manifold to cause oxygen to exit from the oxygen inlet/outlet ends into the reservoir and purge the plurality of sieve beds by evacuating pressurized nitrogen from the plurality of sieve beds through passages in the air manifold.
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Accused Products
Abstract
A portable oxygen concentrator includes a pair of sieve beds having first and second ends, a compressor for delivering air to the first ends of the sieve beds, a reservoir communicating with the second ends of the sieve beds, and an air manifold attached to the first ends of the sieve beds. The air manifold includes passages therein communicating with the compressor and the first ends of the sieve beds. A set of valves is coupled to the air manifold, and a controller is coupled to the valves for selectively opening and closing the valves to alternately charge and purge the sieve beds to deliver concentrated oxygen into the reservoir. An oxygen delivery manifold communicates with the second ends of the sieve beds for delivering oxygen from the reservoir to a user. Pressure sensors may be provided in the reservoir and/or delivery line for controlling operation of the controller.
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Citations
34 Claims
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1. A portable oxygen concentrator, comprising:
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a plurality of sieve beds adapted to absorb nitrogen from air delivered into the plurality of sieve beds, wherein each sieve bed in the plurality of sieve beds comprising air inlet/outlet end and an oxygen inlet/outlet end; a reservoir in fluid communication with the oxygen inlet/outlet ends of the plurality of sieve beds to store oxygen from the plurality of sieve beds; a compressor adapted to deliver air to the air inlet/outlet ends of the plurality of sieve beds; an air manifold defining a plurality of passages therein communicating with the compressor and the air inlet/outlet ends of the plurality of sieve beds, wherein the air manifold defines an external wall of a housing for the portable oxygen concentrator, and wherein the compressor is mounted directly on the air manifold; a set of valves coupled to the air manifold; and a controller coupled to the valves and adapted to selectively open and close the valves to alternately charge the plurality of sieve beds by delivering compressed air into the plurality of sieve beds through the passages in the air manifold to cause oxygen to exit from the oxygen inlet/outlet ends into the reservoir and purge the plurality of sieve beds by evacuating pressurized nitrogen from the plurality of sieve beds through passages in the air manifold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 28, 29)
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15. A portable oxygen concentrator, comprising:
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a plurality of sieve beds adapted to absorb nitrogen from air delivered into the plurality of sieve beds, and wherein each sieve bed in the plurality of the sieve beds includes an air inlet/outlet end and an oxygen inlet/outlet end; a reservoir communicating with the oxygen inlet/outlet ends of the sieve beds for storing oxygen exiting from the oxygen inlet/outlet ends of the sieve beds; a compressor adapted to deliver air to the air inlet/outlet ends of the plurality of sieve beds; an air manifold operatively coupled to the air inlet/outlet ends of the plurality of sieve beds, wherein the air manifold includes a plurality of passages therein communicating with the compressor and the air inlet/outlet ends of the plurality of sieve beds, wherein the air manifold defines an exterior wall of a housing for the portable oxygen concentrator, wherein the compressor is mounted directly on the air manifold; a set of valves operatively coupled to the air manifold; a controller operatively coupled to the valves and adapted to selectively open and close the valves to alternately charge the plurality of sieve beds by delivering compressed air into the plurality of sieve beds through the passages in the air manifold to cause oxygen to exit from the oxygen inlet/outlet ends into the reservoir, and purge the plurality of sieve beds by evacuating pressurized nitrogen from the plurality of sieve beds through passages in the air manifold; and an oxygen delivery manifold operatively coupled to the oxygen inlet/outlet ends of the plurality of sieve beds, wherein the oxygen delivery manifold includes a passage therein communicating with the reservoir to deliver oxygen from the reservoir to a user. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 30)
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26. A portable oxygen concentrator, comprising:
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a pair of sieve beds, each comprising an air inlet/outlet end and an oxygen inlet/outlet end; a reservoir nested at least partially between the pair of sieve beds, wherein the reservoir is adapted to communicate with the oxygen inlet/outlet ends of the pair of sieve beds; a compressor adapted to delivery air to the air inlet/outlet ends of the pair of sieve beds; an air manifold defining a plurality of passages therein to communicate the compressor and the air inlet/outlet ends of the pair of sieve beds, wherein the air manifold defines an exterior wall of a housing for the portable oxygen concentrator, and wherein the compressor is mounted directly on the air manifold; a set of valves coupled to the air manifold; and a controller coupled to the valves and adapted to selectively open and close the valves to alternately charge and purge the sieve beds to deliver concentrated oxygen into the reservoir. - View Dependent Claims (27, 31)
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32. A portable oxygen concentrator, comprising:
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a plurality of sieve beds adapted to absorb nitrogen from air delivered into the plurality of sieve beds, wherein each sieve bed in the plurality of sieve beds comprising air inlet/outlet end and an oxygen inlet/outlet end; a reservoir in fluid communication with the oxygen inlet/outlet ends of the plurality of sieve beds to store oxygen from the plurality of sieve beds; a compressor adapted to deliver air to the air inlet/outlet ends of the plurality of sieve beds; an air manifold defining a plurality of passages therein communicating with the compressor and the air inlet/outlet ends of the plurality of sieve beds, and wherein the compressor is mounted directly on the air manifold; a set of valves coupled to the air manifold; and a controller coupled to the valves and adapted to selectively open and close the valves to alternately charge the plurality of sieve beds by delivering compressed air into the plurality of sieve beds through the passages in the air manifold to cause oxygen to exit from the oxygen inlet/outlet ends into the reservoir and purge the plurality of sieve beds by evacuating pressurized nitrogen from the plurality of sieve beds through passages in the air manifold. - View Dependent Claims (33, 34)
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Specification