Oxygen Concentrator Working Principle

I. Cover Page

- Title: Detailed Explanation of the Working Principle of the RespirEasy Oxygen Concentrator
- Subtitle: The Conversion Mechanism from Air to Oxygen
- Speaker: RespirEasy
- Date: August 25, 2025

II. Table of Contents

1. Core Functions and Application Scenarios of the RespirEasy Oxygen Concentrator
2. Classification of Mainstream Oxygen Concentration Technologies
3. Analysis of the Core Working Principles of Various Technologies
4. Key Components and Their Functions
5. Precautions for Using the RespirEasy Oxygen Concentrator
6. Summary and FAQs

III. Core Functions and Application Scenarios of the RespirEasy Oxygen Concentrator

- Core Function: Separates oxygen from air and provides a high-concentration oxygen source (typically 90%-96%)
- Application Scenarios
- Medical: Home oxygen therapy, hospital emergency care, and adjunctive treatment for chronic diseases (e.g., COPD)
- Industrial: Metal cutting, chemical reaction combustion support
- Special Scenarios: High-Altitude Oxygen Supply, Diving Operations

IV. Classification of Mainstream Oxygen Generation Technologies

1. Molecular Sieve Pressure Swing Adsorption (PSA): The mainstream technology for home and small- to medium-sized medical oxygen concentrators

2. Membrane Separation: Suitable for low-concentration, low-flow applications (such as vehicle-mounted oxygen production)

3. Water Electrolysis: Mostly used in industrial applications or for specialized high-purity oxygen demand scenarios

V. Core Working Principles of Various Technologies

(I) Molecular Sieve Pressure Swing Adsorption (PSA)

1. Core Principle: Utilizing the differential adsorption capacity of molecular sieves for nitrogen and oxygen, oxygen is produced through a cycle of pressurized adsorption and decompression desorption.

2. Workflow
- Pressurization Phase: Filtered air enters the adsorption tower, where the molecular sieve adsorbs nitrogen and oxygen passes through and is collected.
- Decompression Phase: The adsorption tower is depressurized, and the molecular sieve releases the adsorbed nitrogen, restoring its adsorption capacity.
- Dual-Tower Alternation: Two adsorption towers alternately pressurize and depressurize to achieve continuous oxygen production.

(II) Membrane Separation Method

1. Core Principle: Utilizes the differential permeability of polymer membranes for oxygen and nitrogen, allowing oxygen to pass through the membrane preferentially.

2. Process: Compressed air enters the membrane module, where oxygen rapidly permeates to the other side, while nitrogen is trapped and discharged, resulting in a low-concentration oxygen (approximately 30%-50%).

(III) Water Electrolysis Method

1. Core Principle: Water (H₂O) is decomposed through electrolysis, producing oxygen and hydrogen at the electrodes.

2. Process: Water containing an electrolyte is injected into the electrolytic cell. When power is applied, oxygen is produced at the anode (for collection and use) and hydrogen is produced at the cathode (for safe discharge or recovery).

VI. Key Components and Their Functions

- Air Compressor: Provides pressurized air to power the adsorption/permeation process.
- Molecular Sieve/Separation Membrane: Core separation element, achieving oxygen and nitrogen separation.
- Filtration System: Includes primary filter pads and high-efficiency filters to remove dust and impurities from the air. Oxygen Concentration Sensor: Monitors oxygen output concentration in real time to ensure compliance with standards.
- Oxygen Storage Tank: Stores generated oxygen and stabilizes oxygen output pressure and flow rate.

VII. Precautions for Oxygen Concentrator Use

- Environmental Requirements: Avoid high temperatures, humidity, and dusty environments, and ensure good ventilation.
- Regular Maintenance: Replace filters and molecular sieves (PSA models) on schedule to extend device life.
- Safety Regulations: Keep away from sources of fire (oxygen supports combustion). Electrolysis models require attention to hydrogen emission safety.
- Flow Control: Optimize the oxygen output flow rate based on medical needs or application requirements.

VIII. Summary and FAQs

- Summary: Comparison of applicable scenarios and core principles of different oxygen generation technologies.
- FAQs
- Why are PSA technologies often used in home oxygen concentrators? (Answer: Low cost, high concentration, small size, and suitable for home use.)
- What might cause a decrease in oxygen output concentration from an oxygen concentrator? (Answer: Clogged filters, aging molecular sieves, compressor failure.)
- Why is electrolyzed water oxygen unsuitable for home use? (Answer: It consumes electricity, produces hydrogen, poses safety risks, and is expensive.)

IX. End Page

This concludes our discussion on the working principles of the RespirEasy oxygen concentrator. Thank you for your attention and support, and thank you to the RespirEasy team for their assistance in compiling this information!

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