Oxygen concentrator

By introducing an air intake and nitrogen exhaust control module and rationally arranging the main support structure in a portable oxygen generator, the problem of moisture damage to the molecular sieve of the adsorption tower when it is shut down is solved, the stability and service life of the oxygen generator are improved, and miniaturization design is promoted.

WO2026143515A1PCT designated stage Publication Date: 2026-07-09BMC MEDICAL CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
BMC MEDICAL CO LTD
Filing Date
2024-12-31
Publication Date
2026-07-09

AI Technical Summary

Technical Problem

When existing portable oxygen generators are left idle for extended periods, the molecular sieves in the adsorption tower come into contact with external air, causing damage to water molecules, which affects oxygen production capacity and stability, and shortens their service life.

Method used

The air intake and nitrogen exhaust control module connects the molecular sieve installation cavity to the external space only during the molecular sieve desorption step, and keeps it isolated at other times to reduce the contact between the molecular sieve and the outside air. By reasonably arranging the main support structure, the stable connection of the components is ensured, and air leakage and abnormal noise caused by bumps or use at multiple angles are avoided.

Benefits of technology

It effectively prevents water molecules from permanently damaging the molecular sieve, improves the stability and service life of the oxygen generator, and promotes the miniaturization and portability of the oxygen generator.

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Abstract

The present invention relates to the field of ventilatory therapy devices, and provides an oxygen concentrator. The oxygen concentrator comprises a compressor, adsorption towers, and an intake and nitrogen discharge control module. Each adsorption tower is provided with a molecular sieve mounting cavity and an air inlet port communicated with the molecular sieve mounting cavity, a molecular sieve is mounted inside each molecular sieve mounting cavity, and the molecular sieve is configured to perform an adsorption step in which nitrogen from the ambient air compressed by the compressor is adsorbed to produce oxygen and a desorption step in which the adsorbed nitrogen is discharged. The intake and nitrogen discharge control module is configured to enable the corresponding molecular sieve mounting cavity to be communicated with an external space in only the desorption step of the molecular sieve. The oxygen concentrator can effectively reduce the contact between the molecular sieves in the adsorption towers and the air in the external space, thereby reducing the permanent performance damage caused by water molecules in the air to the molecular sieves, and avoiding the decrease in oxygen production capacity and stability caused by long-term shutdown and storage.
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