Oxygen Compressor

Oil-Free Oxygen Compressor

Undertake design and selection of various gas compressors,
can be customized according to your needs

Features of Diaphragm Compressors

A diaphragm compressor is a positive displacement compressor with a special structure. It separates the medium to be compressed from the oil by means of a diaphragm. Owing to its distinctive structure, the compressed medium does not come into contact with any lubricants, eliminating the need for cylinder lubrication. Moreover, it boasts outstanding sealing performance. As a result, it is especially applicable to the compression, transportation, and bottling of high-value rare gases, as well as those gases that are highly corrosive, toxic, hazardous, flammable, explosive, and radioactive.

Diaphragm compressors feature excellent sealing properties, which can effectively isolate oxygen from the driving components, prevent oxygen leakage, and reduce safety risks. Meanwhile, they can ensure the purity of oxygen and avoid the admixture of impurities, making them particularly suitable for use in the medical and electronic fields. These compressors support a wide pressure range, accommodating the oxygen requirements from medium and low pressures to high pressures. Moreover, they offer a stable flow rate, which is ideal for continuous production processes with high demands for oxygen flow.

The entire compression system is oil-free, avoiding the possibility of oil coming into contact with high-pressure, high-purity oxygen, ensuring equipment safety.
The whole system does not require lubricating oil or an oil distribution system, resulting in a simpler machine structure that is easy to control and operate.
The system is completely oil-free, so the oxygen being compressed is free of contamination, maintaining consistent purity at both the intake and exhaust ports of the compressor.
Equipped with multi-stage compression, each stage includes high-pressure protection, high exhaust temperature protection, a safety valve, and a temperature display device. If the temperature becomes too high or there is an overpressure condition, the system will issue an alarm and stop operation to ensure safe operation. The bottom of the compressor is fitted with forklift slots for easy transportation.
Our standard high-pressure oxygen compressors are CE-certified by the European Union, meeting the requirements of the EU market.

The Feature of an Oil-Free Oxygen Compressor

No oil, stainless steel cylinder.
Suitable for pressurization of VPSA PSA oxygen source.
No pollution, keep the purity of gas unchanged.
Safe and reliable quality, good stability, comparable to and replace similar foreign brands.
Low procurement cost, low maintenance cost, simple operation.
The service life of the piston ring under low pressure conditions is 4000 hours, and the service life of the piston ring under high pressure conditions is 1500-200O hours.
Brand motor, you can specify the brand, such as Siemens or ABB brand.
Supply to the Japanese market to meet the strict quality requirements of Japan.
According to the specific working conditions of customers, the compressor is designed for single-stage compression, two-stage compression, three-stage compression and four-stage compression.
Low speed, long life, average speed 260-400RPM.
Low noise, the average noise is less than 75dB, can work quietly in the medical field.
Continuous continuous heavy operation, can run stably for 24 hours without stopping (depending on the specific model).

Medium and low pressure oxygen compressor with full oil-free lubrication series

Model	Volume flow	Inlet pressure	Exhaust pressure	Power	Length × Width × Height	Weight	Interface size
Model	Nm³/h	MPa(G)	Mpa(G)	KW	mm	kg	RC
MN-5/4-10	5	0.4~20Mpa	1.0~20Mpa	1.5	860×830×1000	90	1/2
MN-10/4-10	10	0.4~20Mpa	1.0~20Mpa	2.2	860×830×1000	100	1
MN-15/4-10	15	0.4~20Mpa	1.0~20Mpa	2.2	860×830×1000	110	1
MN-20/4-10	20	0.4~20Mpa	1.0~20Mpa	3.0	860×830×1000	120	1
MN-25/4-10	25	0.4~20Mpa	1.0~20Mpa	3.0	860×830×1000	120	1
MN-30/4-10	30	0.4~20Mpa	1.0~20Mpa	3.0	860×830×1000	120	1
MN-40/4-10	40	0.4~20Mpa	1.0~20Mpa	4.0	1100×830×850	245	1
MN-50/4-10	50	0.4~20Mpa	1.0~20Mpa	4.0	1100×830×850	245	1
MN-60/4-10	60	0.4~20Mpa	1.0~20Mpa	5.5	1200×650×800	255	11/2
MN-70/4-10	70	0.4~20Mpa	1.0~20Mpa	5.5	1200×650×800	302	11/2
MN-90/4-10	90	0.4~20Mpa	1.0~20Mpa	7.5	1400×1100×1100	302	11/2,1
MN-120/4-10	120	0.4~20Mpa	1.0~20Mpa	11	1400×1100×1100	352	11/2,1
MN-12/0-6	12	0.5~20Mpa	0.6~20Mpa	2.2	1100×830×750	200	1,1
MN-30/0-6	30	0.5~20Mpa	0.6~20Mpa	5.5	1200×950×750	270	11/2,1
MN-60/0-6	60	0.5~20Mpa	0.6~20Mpa	11	1650×850×950	380	11/2,1
MN-90/0-6	90	0.5~20Mpa	0.6~20Mpa	15	1650×850×950	420	2,11/2
MN-120/0-6	120	0.5~20Mpa	0.6~20Mpa	18.5	1870×1000×1000	540	2,11/2

Choosing Minnuo’s Oil-Free Oxygen Compressor means selecting exceptional quality, enhanced productivity, and reliable after-sales support. Let’s work together to take your business to the next level!

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Frequent Asked Question

1.What is the difference between an oil-free oxygen compressor and a traditional oil-lubricated compressor?

As a professional manufacturer of oil-free oxygen compressors, the equipment we offer is significantly different from traditional oil-lubricated compressors. Traditional oil-lubricated compressors rely on lubricating oil to reduce internal friction, which can lead to oil contamination in the exhaust gas, compromising the purity of the oxygen. Additionally, they increase maintenance complexity and costs. In contrast, our oil-free compressors feature a completely oil-free design, ensuring no oil or oil vapors in the exhaust, preventing any oil contamination, and guaranteeing oxygen purity. This makes them particularly suitable for medical and high-precision industrial applications. Moreover, without an oil system, maintenance is simplified, significantly reducing operational costs.

2.What are the maintenance requirements for an oil-free oxygen compressor?

Our oil-free oxygen compressors are designed to eliminate the use of oil, reducing the maintenance burden typical of traditional oil-lubricated systems. However, regular maintenance is still essential, including:

Air filters: Regularly check and replace the filter elements to ensure clean air intake.
Cooling system: Whether air-cooled or water-cooled, regularly check the cooling efficiency to prevent overheating.
Moving parts: Periodically inspect the wear on piston rings and seals to ensure smooth operation.
Pressure and temperature checks: Ensure the equipment operates within the recommended pressure and temperature ranges to avoid damage from excessive pressure or heat. These simple maintenance steps can effectively extend the equipment’s lifespan and maintain efficient, stable operation.

3.What working environments are oil-free oxygen compressors suitable for?

Our oil-free oxygen compressors are highly adaptable and perform excellently in the following environments:

Moist environments: The oil-free design prevents performance degradation caused by oil emulsification in traditional compressors.
Dusty environments: The sealed structure of the equipment reduces the impact of external dust, ensuring stable operation.
High-purity gas requirements: Ideal for industries with strict oxygen purity standards, such as medical oxygen supply systems and electronics manufacturing, preventing oil contamination and ensuring gas quality. We offer tailored solutions based on specific customer needs to ensure the equipment performs optimally in different work environments.

4.How do I choose an oil-free oxygen compressor?

- Oxygen demand (flow rate): Please provide the required oxygen flow rate (unit: Nm³/h or L/min). This helps us determine the compressor specifications needed to meet your requirements.
- Operating pressure: Based on your application, specify the required working pressure (unit: bar), e.g., 5-10 bar for medical applications, 150 bar or higher for industrial use. This information allows us to recommend the most suitable compressor model.
- Working environment: Provide details on environmental temperature (unit: °C), humidity (unit: % RH), and air quality. For harsh environments (e.g., high humidity or dust), we can customize additional features like dust proof or corrosion-resistant options.
- Power requirements: Please provide local voltage (unit: V), current (unit: A), and frequency (unit: Hz). We will match the appropriate motor and drive system based on your power standards.
- Special requirements: If you have specific needs such as low noise (unit: dB), explosion-proof features, or industry certifications (e.g., ISO, CE), please inform us for customized design.
Simply provide this information, and we will quickly design the most suitable oil-free oxygen compressor solution, ensuring optimal performance and stable operation.

5.What is the lifespan of an oil-free oxygen compressor?

Under proper working conditions and regular maintenance, our oil-free oxygen compressors have a long service life:
- At low-pressure conditions, piston rings can last up to 4000 hours.
- At high-pressure conditions, piston rings typically last 1500-2000 hours, depending on load and operating environment. To extend the lifespan, we recommend regularly checking the cooling system, lubricating system (if using water or air cooling), and seals, and replacing worn parts in a timely manner. Our products are designed for long-term durability, helping minimize downtime and maintenance costs.

6.How do you ensure the safety of the oxygen compressor?

Safety is a top priority in the design of our oil-free oxygen compressors. The equipment is equipped with multiple safety features to ensure safe operation in high-pressure, high-temperature environments:

High-pressure protection: Each stage is equipped with high-pressure protection devices to prevent system over pressure.
Temperature protection: Temperature sensors monitor the operational state; if the temperature exceeds safe limits, protective measures will be triggered to avoid damage.
Safety valve: The safety valve automatically vents the system when pressure becomes too high, preventing over pressure damage.
Automatic alarm system: If an anomaly occurs, the system will automatically issue an alarm and shut down, ensuring the safety of both the equipment and operators.