Ultra rapid cycle portable oxygen concentrator
Lightweight, portable oxygen concentrators that operate using an ultra rapid, sub one second, adsorption cycle based on advanced molecular sieve materials are disclosed. The amount of sieve material utilized is a fraction of that used in conventional portable devices. This dramatically reduces the volume, weight, and cost of the device. Innovations in valve configuration, moisture control, case and battery design, and replaceable sieve module are described. Patients with breathing disorders and others requiring medical oxygen are provided with a long lasting, low cost alternative to existing portable oxygen supply devices.
1. A portable oxygen concentrator for concentrating oxygen from ambient air, the portable oxygen concentrator comprising:
a portable oxygen concentrator module;
a manifold mounted within the portable oxygen concentrator module, the manifold having a passageway for transporting the ambient air and a module connection, the module connection in fluid communication with the passageway;
a compressor mounted within the portable oxygen concentrator module, the compressor in communication with the passageway for transporting the the ambient air into the passageway;
a battery pack module releasably connectable to the portable oxygen concentrator module, the battery pack module being rechargeable;
a sieve bed having a housing, an adsorbent bed comprised of a molecular sieve material contained in the housing, an outlet end, and a feed end having an input port, the sieve bed being removable by a user from the portable oxygen concentrator module, the sieve bed is comprised of a first sieve bed and a second sieve bed, the passageway in communication with a first input port of the first sieve bed and a second input port of the second sieve bed when the sieve bed is mounted to the portable oxygen concentrator module, the first and second input ports of the sieve bed being automatically connected to the module connection and in fluid communication with the passageway when the sieve bed is inserted into the portable oxygen concentrator module, the sieve bed secured to the portable oxygen concentrator module by a latch configured to close against the sieve bed proximate the outlet end when the sieve bed is positioned in the portable oxygen concentrator module; and
a product end block including a collection channel, the first and second sieve beds connected to the product end block, a first output port of the first sieve bed and a second output port of the second sieve bed are fluidly connected to the collection channel through which enriched oxygen flows from the first and second output ports of the first and second sieve beds.
2. The portable oxygen concentrator of claim 1 , further comprising:
a rupture plate constructed of a plastic material adhered to the input port, the module connection comprised of a piercing mechanism that pierces the rupture plate when the sieve bed is secured to the portable oxygen concentrator module.
3. The portable oxygen concentrator of claim 2 , wherein the rupture plate covers the input port to seal the molecular sieve material in the housing, the rupture plate configured to limit contamination of the sieve material, particularly contamination from moisture.
4. The portable oxygen concentrator of claim 1 , wherein the sieve bed has a sieve length and a sieve diameter.
5. The portable oxygen concentrator of claim 4 , wherein an aspect ratio of the sieve length to the sieve diameter being less than about six (6).
6. The portable oxygen concentrator of claim 1 , wherein the battery pack module includes a first battery pack module or a second battery pack module, the first battery pack module or the second battery pack module conforming to the overall design of the portable oxygen concentrator module depending on which of the first or second battery pack module is connected to the portable oxygen concentrator module by conforming an overall exterior style of the first or second battery pack module to an exterior surface of the portable oxygen concentrator module, the first battery pack module having a first weight and the second battery pack module having a second weight, the first weight being greater than the second weight, the battery pack module releasably connectable to the portable oxygen concentrator module by a quick release latch.
7. The portable oxygen concentrator of claim 1 , wherein an interface between the sieve bed and the manifold is sealed with a flexible seal after the sieve bed is inserted into the portable oxygen concentrator module.
8. A portable oxygen concentrator for concentrating oxygen from ambient air, the portable oxygen concentrator comprising:
a portable oxygen concentrator module;
a manifold mounted within the portable oxygen concentrator module, the manifold having a passageway for transporting the ambient air;
a compressor mounted within the portable oxygen concentrator module, the compressor in communication with the passageway for transporting the ambient air into the passageway;
a battery pack module releasably connectable to the portable oxygen concentrator module, the battery pack module including a first rechargeable battery pack module;
a sieve bed having a housing, an adsorbent bed comprised of a molecular sieve material contained in the housing and a feed end having an input port, the sieve bed being removable and replaceable by a user from the portable oxygen concentrator module, the sieve bed being fastened to the portable oxygen concentrator module after insertion into the portable oxygen concentrator module, the sieve bed being held against the manifold by a mechanism to ensure a tight fit, the passageway in communication with the input port when the sieve bed is mounted to the portable oxygen concentrator module, the input port of the sieve bed being sealed by a sealing plate before insertion into the portable oxygen concentrator module, the input port of the sieve bed being in fluid communication with the passageway automatically when the sieve bed is inserted into the portable oxygen concentrator module; and
a product end block including a collection channel, the sieve bed including a first sieve bed with a first output port and a second sieve bed with a second output port, the first and second sieve beds connected to the product end block and the first and second output ports in fluid communication with the collection channel.
9. The portable oxygen concentrator of claim 8 , wherein input port has a generally conical shape.
10. The portable oxygen concentrator of claim 9 , wherein the sieve bed includes a fibrous pad between the molecular sieve material and the input port.
11. The portable oxygen concentrator of claim 8 , wherein the sealing plate is comprised of a rupture plate connected to and covering the input port, the rupture plate configured to generally prevent contamination of the molecular sieve material, in particular from moisture, during storage and prior to use.
12. The portable oxygen concentrator of claim 11 , wherein the rupture plate is automatically pierced when the sieve bed is inserted into the portable oxygen concentrator module.
13. The portable oxygen concentrator of claim 8 , further comprising:
a second rechargeable battery pack module, the first rechargeable battery pack module or the second rechargeable battery pack module releasably connectable to the portable oxygen concentrator module.
14. The portable oxygen concentrator of claim 8 , further comprising:
one of an o-ring and a gasket that seals a connection between the input port and the passageway when the sieve bed is inserted into the portable oxygen concentrator module.
15. The portable oxygen concentrator of claim 8 , wherein the mechanism is a door that closes against the sieve bed and applies pressure to the sieve bed to ensure an airtight fit between the sieve bed and the manifold.
16. The portable oxygen concentrator of claim 1 , further comprising:
an enriched-oxygen product tube including an oxygen input port and an oxygen output port, the oxygen input port in fluid communication with the collection channel, the oxygen output port in fluid communication with the passageway when the sieve bed is inserted into the portable oxygen concentrator module, the passageway separated by valves.
17. The portable oxygen concentrator of claim 16 , wherein the enriched-oxygen product tube is in fluid communication with the first and second sieve beds through the collection channel.
18. The portable oxygen concentrator of claim 16 , wherein the oxygen output port is fluidly connected to the passageway through an oxygen port valve mounted to the manifold.
19. The portable oxygen concentrator of claim 17 , wherein the first and second input ports are located on an opposite side of the first and second sieve beds from the first and second output ports and the product end block, the module connection including a first module connection and a second module connection, the first input port connected to the first module connection and the second input port connected to the second module connection when the sieve bed is inserted into the portable oxygen concentrator module.
20. The portable oxygen concentrator of claim 1 , wherein the latch is comprised of a quick release latch.