Oxygen Concentrator Moisture Management System
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Solution Overview
Problem
Portable oxygen concentrators face challenges in managing moisture, which deactivates sieve beds and affects the efficiency and comfort of oxygen delivery, leading to reduced shelf life and patient discomfort due to dryness.
Innovation Solution
A moisture management system integrated into the portable oxygen concentrator, comprising a moisture separation sub-system, transport sub-system, and containment module, which removes moisture from intake air, extends sieve bed life, and recycles it to humidify the oxygen enriched air for delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If moisture is removed from intake air using a moisture separation subsystem, then sieve bed efficiency is maintained and lifespan is prolonged, but device complexity increases due to additional moisture management components
Solution Approach 1:
The patent extracts moisture from the intake air stream using a moisture separation subsystem before the air reaches the sieve beds. This removal of the harmful substance (moisture) protects the sieve beds from deactivation and extends their operational life, directly resolving the contradiction between maintaining reliability and avoiding increased complexity.
Solution Approach 2:
The patent captures the removed moisture and redirects it to humidify the oxygen-enriched air delivered to the patient. This converts the harmful moisture that would deactivate sieve beds into a beneficial humidification source, improving patient comfort while maintaining sieve bed efficiency. This dual-use approach justifies the added complexity by delivering multiple benefits from the same moisture management infrastructure.
2Duration of action of stationary object
If moisture is removed from intake air, then sieve bed lifespan is prolonged, but loss of substance occurs due to removal of water vapor
Solution Approach 1:
The patent discards moisture from the intake air stream to protect the sieve beds, then recovers this removed moisture by redirecting it to humidify the oxygen-enriched air. This recovery process eliminates the net loss of water vapor, as the moisture is not wasted but reused in a beneficial manner, directly addressing the contradiction between extending lifespan and preventing substance loss.
3Device complexity
If oxygen enriched air is delivered without humidification, then device complexity is reduced, but patient comfort deteriorates due to dryness
Solution Approach 1:
The moisture management subsystem serves multiple functions: it removes moisture from intake air to protect sieve beds, captures the removed moisture, and redirects it to humidify the delivered oxygen-enriched air. This multi-functionality means the same added complexity delivers both protective and comfort-enhancing benefits, resolving the contradiction between simplified device design and improved patient comfort.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system maintains sieve bed efficiency, prolongs their lifespan, and enhances patient comfort by ensuring the oxygen delivered is properly humidified, addressing both performance and comfort issues.
Implementation Method 1
a first pathway from the compression system. The first pathway is configured to receive the feed gas from the compression system, draw out moisture from the feed gas to produce moisture reduced feed gas
Implementation Method 2
a third pathway configured to transfer the drawn-out moisture from the first pathway to the second pathway
Implementation Method 3
a second pathway from the accumulator. The second pathway is configured to apply the drawn-out moisture to the produced oxygen enriched air to produce humidified oxygen enriched air
Data Source
AI summary
An oxygen concentrator (100) may have a moisture conditioning system. In some implementations, the concentrator includes a compressor to induce feed gas into the concentrator. A first pathway may receive the feed gas from the compression system. The first pathway may be configured to draw moisture to produce moisture reduced feed gas. The first pathway may lead the moisture reduced feed gas to sieve bed(s) which produce oxygen enriched air with the moisture reduced feed gas. An accumulator may be configured to receive the produced oxygen enriched air from the sieve bed(s). A second pathway from the accumulator may apply the drawn-out moisture to the produced enriched air to produce humidified enriched air. A third pathway may transfer the drawn-out moisture from the first pathway to the second pathway. An outlet coupled with the second pathway may release the humidified enriched air from the concentrator for a user.