Oil-free Air Compressor
Whole machine does not have any lubricating oil, ISO8573 Class 0 oil free is ensured for whole service life, widely used in food and beverage processing, pharmaceutical manufacturing, electronics manufacturing and other industries.
8~12 bar Water-Lubricated Air Compressor
CM/B Series Fixed Speed Oil-free Screw Air Compressor
| CM | *** | B | V | F: |
| Oil-free Series | Horse Power | Standard Type Series | Variable Speed Type | Air Cooling Type |
*CM–BF is an air-cooled unit, the orange data in the table is the data of the air-cooled unit, and there is no F in the model for the water-cooled unit model
CM/PV Series Variable Speed Oil-free Screw Air Compressor
| CM | *** | B | V | F: |
| Oil-free Series | Horse Power | Standard Type Series | Variable Speed Type | Air Cooling Type |
*CM–PVF is an air-cooled unit, the orange data in the table is the data of the air-cooled unit, and there is no F in the model for the water-cooled unit model
20-40 bar Oil-free Screw Air Compressor
CM/GPV Series Variable Frequency Oil-free Screw Air Compressor
|
CM/G Series Fixed Frequency Oil free Air Compressor
- CM75G
- CM75GPV
- CM90G
- CM110GPV
- CM110G
- CM130GPV
- CM150GPV
- CM200GPV
- CM242GPV
- CM320GPV
Oil-Free Scroll Air Compressor
CMW Series Oil-free Scroll Air Compressor
|
Air compression
with high efficiency
energy saving
long service life
Why Choose Oil-free Air Compressor
Energy saving
Environment protection
Reliability
Quiet
Low energy consumption, more air production; less working and maintenance cost.
During working process, there is not any lubricating oil to make sure no pollution
Low temperature and speed working condition Simple design and instructure.
Noise reducing means better working condition.
✔ Energy saving
- Energy saving, high sealing; 55kW for example, it saves 8.8kW /Hour electricity compared to the dry oil-free compressor.
- It is connected with motor directly, not any energy lost.
- Volumetric efficiency, more air production, 55kW pressure0.8MPa , FAD9.6m³/min
- Automatic control system, step less regulation of intake, adjust air production according to demand.
✔ Reliablity
- Force balance, not force of the bearing；more longer service life of bearing and air end
- One stage compression, only 7pcs bearing, less parts, less failure rate
- No synchronous gear, speed synchronization of air compressor and air end, bearing and air end with longer service life
- 35 items of self diagnostic function and early warning in time
- Stably working, not need paint-coat
- Certified by German T ü V ISO 8573-1:2010 Class 0 oil-free certification
✔ Zero maintenance
- Maintenance leading time is long, no demand of maintenance service
- Low working cost and maintenance only to change air filter and water filter
- Air end 2 years warranty, designed using life is 25 years of machine
- 24 hours service time, for emergency, we can provide reserve machine.
- Reduce environment burden and carry out 3R, no waste oil
The Highest Efficiency Screw Air End
Using new model screw and make sure the world highest energy efficiency New screw air end with longer using life and the using life can be reached 25 years
- Force balance on axial and radial burden
- Less moving parts, low failure rate
- Less burden of bearing, and longer using life
- Low vibration, low noise and more air production
Secret of Air Production No Dropping
Application of our new teeth shape and molded lines: patent of invention of infinite line contacting reduce the contact stress of engagement. During engagement, the contact stress is nearly zero contacting. So make sure the teeth never wearing out, and reduce leaking, increase the volumetric efficiency and reduce energy consumption.
Core Technology of Oil-free Screw Air Compressor of Water Lubrication
Cleaning
Air
- Lubrication circle water using drink water, and equipped with water filter
- Using super cooler, and working temperature of machine ≤50℃, outlet pressure dew point
- Using water lubricating bearing, the whole system and compressed air without any oil.
- Germany TüV certificate ISO8573-1:2010 CLASS 0 oil-free certificate
Bearing Sealing
- CMN patent of no shaft sealing design, no oil leakage from the air end
Corrosion
Resistance
- Material of air end is a special stainless steel which with strong anti-rust and wear resistance. All the design of whole machine has the same grade corrosion resistance. And the machine has water purifying device. So it will not have scale problem.
Comparion
- Oil-Free Air Quality: The primary advantage of oil-free air compressors is that they deliver clean, oil-free compressed air. This is crucial for applications that require oil-free air, such as pharmaceuticals, food and beverage production, electronics manufacturing, and painting. Oil-free compressors ensure that there is no risk of oil contamination in the compressed air, protecting sensitive equipment, products, and processes.
- Environmental Friendliness: Oil-free compressors are more environmentally friendly compared to oil-injection compressors. They eliminate the risk of oil mist emissions, which can be harmful to the environment and human health. Additionally, oil-free compressors do not require oil disposal, reducing the environmental impact and simplifying waste management.
- Reduced Maintenance: Oil-free compressors have lower maintenance requirements compared to oil-injection compressors. Without the need for oil changes, filter replacements, and oil-related maintenance tasks, they save time and money on maintenance. This also reduces the risk of oil-related failures and extends the operational lifespan of the compressor.
- Energy Efficiency: Oil-free compressors can achieve high energy efficiency levels. They are designed with advanced technologies, such as efficient air cooling systems and precision engineering, to optimize energy consumption. This can result in cost savings on energy bills, especially in applications with high compressed air demand.
- Application Flexibility: Oil-free compressors are versatile and can be used in a wide range of applications. They are suitable for industries that require clean air, such as medical and dental facilities, laboratories, pharmaceutical manufacturing, electronics assembly, and food processing. Oil-free compressors offer peace of mind by ensuring the air quality meets stringent standards.
For more detailed comparisons,
please click here ☛
◆ Variable Frequency
- Reduce the impact ofloading and unloading on the intake valve and exhaust valve
- Reduce the impact of loading and unloading on the internal bearings of the air end
- Reduce the impact of pressure fluctuations on various pressure-bearing components inside the machine
Regular Model：
- 80% Power consumption
- 10% Purchase cost
- 10% Maintenance
If using a variable frequency model:
- 45% Power consumption
- 10% Purchase cost
- 10% Maintenance
- 35% Electricity savings
◆ One-stage compression, ultra-high volumetric efficiency
Based on the ultra-high volumetric efficiency of the single-screw air end, coupled with the lubrication, sealing and cooling effects of pure water, unlike traditional oil-free technology that relies on two-stage compression. We only requires one-stage compression to provide a pressure of up to 12.5bar compressed air. Since no additional compression stage is required,it can compress air to the target operating pressure with greater efficiency.resulting in lower energy consumption.
At the same time, Our air compressor adopts a transmission method in which the motor and the alr end are directly connected to reduce losses in the energy transmission process, maximize eficiency, and reduce maintenance content which is a more economical and environmentaly friendly choice in terms of saving energy and reducing operating costs
◆ Isothermal Compression
High efficiency
Isothermal compression means that during the compression process, the air and cooling water exchange heat to keep the temperature constant during the compression process, Compared with non-isothermal compression.isothermal compression can effectively reduce heat loss and improve energy efficiency. Water-lubricated air compressors use cooling water to isothermally treat compressed air, making the compression process more efficient.
The compression effect is more stable
Isothermal compression can effectively reduce the compression temperature and reduce the volume change ofthe gas during the compression process. This helps improve compressor stability and reliability, reduces mechanical wear and risk of failure, and extends equipment life.
Protect process quality
The isothermal compression of the water-lubricated air compressor can avoid the analysis of moisture and oil caused by overheating of the gas, thereby maintaining the purity of the compressed air. For industries with higher air quality requirements, uch as food processing, pharmaceuticals, etc., water-lubricated air compressors can provide more reliable oil-free and pollution-free compressed air.
◆ IOT Monitoring System
The CM series comes standard with an IOT monitoring system that supports remote monitoring , start stop , and other functions , and can provide timely feed back on various alarm information
Applications for Air Compressor
Do You Have the Following Questions About the Water Lubrication Screw Technology?
☞Does water rust the air compressor system?
CM series water-ubnicated screw air compressor uses purifed water with the standard of drinking. The air end and all the pipes are made of 304or 306 stainless steel or some other special corrosion resistant material, so the rusting problem wil not be happened.
☞Does the water affect the using life of screw air compressor?
The air end of CM series water-ubricated screw air compressor is under the patent design of no shaft sealing, so there are no needs of changingthe shaf sealing, and no distortion. By using the heay duty bearing to make longer using life, and this kind bearing is diferent from the formelfragile and perishable nano-carbide and ceramic bearing.
☞Does water scale up?
CM seres water-injected air compressor system using drinking standard purfed water, the water circulates through the system, and the systemwll change the water every 200 hours automatically to make sure ow calcium content in the wate. What’s more. the workina temperature of theair end is not over 50’C so there is no risk of scale.
☞ls the compressed air with high moisture content by the water-lubricated oil-free screw air compressor?
The water content of the comoressed air is under saturated state. And the water content of compressed air only has relationship with temperatureand pressure: t is not afected by others. The temperature of compressed air by water-ubricated oi-ree screw air compressor is no more thar50’C,so the water content is under 50’C saturated state, Comparing with other type air compressor, the temperature of discharoe air is hioherthan 50’C ,so the water content is also higher.
☞Why no coating for screw rotor of water-lubricated oil-free screw air compressor?
The clearance of screw rotor of water-ubricated oi-ree screw air comoressor of CM series is sealed by the water iniecion. The screw rotor imade of special ant-corosion material. The working temperature of rotor is no more than 50C , so there is not any worry about the deformationleakage. corrosion of the screw rotor.
☞ls the efficiency of water-lubricated oil-free screw air compressor decreased?
CM series water-ubricated oi-free screw air compressor has inherited the technology of the French engineer B Zimmem, to become the only onemastering this technology. The design life of screw air compressor is 20 years, and the using life is more than 15 years, besides. the eficiencywill be decreased less than 5%
☞Why the life and efficiency of our water-lubricated oil-free screw air compressor is much better than other water-injected screw air compressor?
CM series water-ubricated oi-free srew air compressor through ten years of development, technology of precipitation, has mastered the coretechnigue of type lien meshing. stable rmaterial of air end and reliable manufacture process technology. CM series water-ubricated oi-free screw air compressor through ten years’ experience in practical application, gains the most stable hardwareand the most reliable software control system.
Comparison of Oil-free Water Lubrication Air Compressor & Dry Oil-free Compressor
① Structural Comparison
Dry air compressor
- Existence gap, low efficiency
- Speed-increasing gear, more machinery loss
- High temperature compression (200-300℃)
Un-balance of force in axial and radial direction on the double screw will cause the burdens of bearing. What’s more, in order to reduce the leaking of dry air compressor, must make sure high speed rotation of 10000-20000RPM/Min. This means the service life of bearing is over. And then the rotor will be locked.
Water lubrication air compressor
- Water sealing, high efficiency
- Low temperature compression (≤50℃）
- Motor contact directly, less machinery lost
There are star wheels on both sides of single screw and make sure the balance force of rotor in radial direction. Two ends of single screw are input the same air pressure , CM shaft service life can be reached 100,000 hours more; So the air end of CM can be working more reliable, efficiency and more longer.
② Air production
③ Service life
Dry oil-free
Dry oil-free air compressor using marketing common air tank to control input vavle, the service life is very limited.
Water lubrication
Our oil-free screw air compressor of water lubricaton using small air take and special sealing part to contol the input valve. The service life of air tank is limitless.
④ User experience
Dry oil-free
- The temperature of output air reaches 200℃，must to cool the temperature. The cooler is blocking, corrosion, scale easily. Must to clean evey year.
- The temperature of dry oil-free air compressor of discharge is more than 200℃，all the parts of the machine are faced high tempreture and oxidation corrosion, the service life is less than 5 years. The high temperature discharge make the cooler rust seriously, the inner side because of compressed air with more oxygen content, will rust more seriouly, effect the purity of the compressed air.
Water lubrication
- The highest temperature of air end of CMN oil-free screw air compressor is 50℃, output air needn’t cooling.
- The temperature of the air end of CMN oil-free screw air compressor is not exceeded 50℃, every parts of the machine is working under normal temperature, the service life is long and the design using life is more than 25 years.
④ Installation effect
Dry oil-free
- Dry oil-free air compressor to make pressure the air to 0.8MPa should be pressed two stages, the structure and control is very complicated.
- There are many rubber tubes on the surranding of air end of oil-free dry air compressor. These rubbet tubes are easily ageing and then happed leaking to make pollution of the compressed air and high oil content .
Water lubrication
- Simple struture of CMN oil-free screw air compressor of water lubrication, single stage pressure can be reached 1.6MPa, high efficiency
- All the pipeline of CMN oil-free screw air compressor of wather lubrication is using stainless steel, never be broken.
⑤ On site usage effect
Dry oil-free
The gear box, bearings of dry oil-free air compressor asked for lubricating oil. A lot of oil ways and it is very complicated. What’s more, with the high temperature to work, it is easily leaking. After using sometime, the cooling fan will accumulate grease and cause high oil content of imputing air.
Water lubrication
There is not any lubricating oil in our oil-free screw air compressor of water lubrication, the whole system not have any oil