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What are the characteristics of oil-free air compressors?

Oil-free air compressors are mostly used for precision instrument air supply, which determines the particularity of the industry it is used in. In the field of machinery, with the improvement of the precision of pneumatic parts, the requirements for oil and water in compressed gas are getting higher and higher. In the past, new products of oil-free air compressors were widely used due to quality problems. With the improvement of the quality of oil-free air compressors, the quality has undergone fundamental progress, which can completely meet the needs of modern industrial production. The superiority of the oil-free air compressor in the use process is reflected.

1. Because the lubricating oil is very viscous, the current degreasing equipment cannot completely remove it, so the oil-free characteristic of the gas compressed by the oil-free air compressor is irreplaceable.

2. The current refrigerated dryers, heatless regenerative dryers, micro-heat regenerative dryers and other water removal equipment lose the function of water removal due to the oil in the compressed air; and the clean oil-free air compressed by the oil-free compressor , fully protects the water removal equipment, and reduces the additional capital occupation caused by the maintenance of the water removal equipment.

3. The use of oil-free air compressors to provide compressed gas to the outside world will not greatly reduce the load on the motor due to the pressure loss caused by the oil removal equipment, and achieve energy saving effects.

4. The oil-injected air compressor wastes a lot of lubricating oil. Taking a 7.5KW high-quality oil-injected air compressor as an example, the low consumption of 5 kg of lubricating oil per month will cost an extra 60 kg of lubricating oil in one year. In addition, in order to remove the oil in the compressed gas, a high-efficiency oil filter must be used, and the filter element needs to be replaced many times, which is also a large expense.

The above are the obvious characteristics of oil-free air compressors in the industry, but whether to choose oil-free air compressors or not, you still need to choose the model that suits you according to the needs of the industry.

Air Compressor Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. mainly provides air compressor equipments and accessories for compressors of world-famous brands. We also support OEM. The company is experienced in power design, adhering to the principles of standardization and application, continuous innovation and improvement, and strive to provide customers with high economy air compressor station and vacuum system design consulting services. Welcome to cooperate with us.

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Generation and Utilization of Air Compressor Heat Energy

When the air compressor is in operation, it has the characteristics of high temperature and loud noise. The high temperature of the air compressor is generated when the air is compressed. This part of the heat comes from the compressed oil and air mixture. After the oil and gas are separated, the high-temperature compressed air and high-temperature lubricating oil produced must be cooled by the cooling system before they can be used.

In the power consumption of the air compressor, the part converted into the heat energy of the air compressor has already accounted for 90%. It is conceivable that the contained heat energy is very large.

The hot water produced by the waste heat recovery of the air compressor can usually reach 50-60 degrees. Although the temperature required by the factory process is often not reached, it can be used to heat the boiler to replenish water, reduce the fuel consumption of the boiler, and achieve a large saving of hot water. cost purposes.

At the same time, the waste heat recovery system of the air compressor can replace the function of the original cooling system, quickly reduce the temperature of the oil and gas, increase the service life of the lubricating oil, and improve the quality of compressed air gas production, thereby prolonging the life of the air compressor and reducing maintenance costs. .

During the long-term continuous operation of the screw air compressor, the electrical energy is converted into mechanical energy, and the mechanical energy is converted into wind energy. In the process of converting mechanical energy into wind energy, the air is strongly compressed at high pressure, causing its temperature to rise. This is the general phenomenon of mechanical energy conversion in physics. , the high-speed rotation of the mechanical screw also generates friction and heat. The high heat generated by the air compressor is mixed with lubricating oil to form oil/gas steam and discharged from the body. The heat of this part of the high temperature/air flow is equivalent to 80% of the input power of the air compressor. , its temperature is usually 80 ℃ ~ 100 ℃, the heat energy is all discharged into the atmosphere due to the temperature requirements of the machine operation, that is, the heat dissipation system of the air compressor to complete the temperature requirements of the machine operation.

The air compressor water heater uses the principle of heat energy conversion to recover and convert the heat emitted by the air compressor into the water. After the water absorbs the heat, the water temperature will rise. The operating temperature of the air compressor unit will drop. The air compressor water heater is not a simple and traditional form of cold and heat exchange, but uses the same-pass cut-off reverse series technology to greatly increase the effect of cold and heat exchange by 1.8 to 2.0 times.

Air Compressor Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. mainly provides air compressor equipments and accessories for compressors of world-famous brands. We also support OEM. The company is experienced in power design, adhering to the principles of standardization and application, continuous innovation and improvement, and strive to provide customers with high economy air compressor station and vacuum system design consulting services. Welcome to cooperate with us.

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The cause and solution of the stuck head of the air compressor

There are several reasons why the machine head is stuck:

The first is insufficient lubricating oil. Insufficient lubricating oil may have the following reasons:

1) Long-term shutdown (including transportation), insufficient oil inside the machine head, resulting in instant oil shortage, resulting in jamming, so for long-term shutdown equipment, add sufficient oil to the machine head before starting the machine;

2) Insufficient oil supply, including untimely replacement or addition of lubricating oil, or blockage and leakage of the oil circuit, resulting in the engine head being stuck due to lack of oil

Followed by direct contact with the rotor, locked. include:

a. The bearing is aging and wears seriously. As the running time of the air compressor increases, the bearings of the main engine will inevitably wear out, resulting in changes in the gap between the screw and the screw, and between the screw and the shell of the main engine. This clearance change is normal within the life of the bearing, and the resulting attenuation of the air compressor's gas production and the increase in the load of the drive motor are also normal.

b. There are too many impurities, including impurities in the oil, carbon deposits, and coking. Therefore, the selection and replacement of lubricating oil is very important; such accidents are more likely to occur when using inferior lubricating oil or using it for an extended period of time.

Treatment method: 

1. It must be dismantled and inspected. 

2. Soak it with the cleaning agent for stuck head, and it can be restored in about five hours.

Air Compressor Spare Parts Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and accessories for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries.

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Application of Oil-free Air Compressors in Packaging Paper Manufacturing

Making wrappers requires oil-free compressed air throughout the process. Here are some uses of compressed air in the papermaking process:

Pneumatic transport: Compressed air is used for pneumatic transport of pulp and waste paper.

Air bearings allow heavy products to be easily handled by floating the weight on a nearly frictionless film of air.

Paper pressing: Compressed air is also used to cool the paper after it has been pressed. If the air is polluted, it contaminates the product, so oil-free air is needed.

Printing: Compressed air is used to operate printing pumps and equipment to print beautiful festive designs on paper.

Roll adjustment: Compressed air is used to precisely control the thickness of the rolls which determine the thickness of the paper, which is essential for efficient processing.

Water Purification: Pulp and paper manufacturing processes require large amounts of water. That's why paper mills are built next to waterways. The extracted water requires an air compressor to remove minerals, bacteria, etc. from the water before it can be used in the manufacturing process.

Air Knife: Delivers a continuous stream of high-velocity air to remove moisture and debris. Reliable low-pressure air supply for successful work.

Wrapping paper made from compressed air is used in every part of our lives, from holidays, birthdays, showers, weddings, retirement parties and more. In addition, compressed air also helps in the manufacture of photographic paper. If you want to know more about how Atlas Copco oil-free air compressors serves the paper and pulp industry, please contact us.

Atlas Copco Oil-free Air Compressors Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and  for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries. If you are interested in atlas air filters or others air compressor consumable materials, please contact us.

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What are the different types of air compressors to choose from?

Positive displacement Atlas air compressors include:

Atlas piston air compressor

Atlas scroll air compressor

Atlas screw air compressor

Positive displacement compressors have a cavity that allows a volume of gas to enter the machine at atmospheric pressure. The chamber then becomes smaller, decreasing in volume while increasing the gas pressure. For example, on a piston compressor, the piston moves up the cylinder, shrinking the space above it, which means the air has to increase in pressure to fit in the smaller cavity.

In a twin rotor compressor, air is trapped and sealed between the male and female rotor profiles. As the rotors rotate and engage, air is pushed into smaller and smaller spaces along the rotors, and the pressure will increase again to allow a given volume of air to fit into the cavities in the compression chambers.

There are several single rotor compressor types - vane, liquid ring and scroll. Atlas Copco regards the  SF scroll compressor as its main product in this category. Some vacuum pumps also use this technique. But in a scroll compressor, a single helical rotor oscillates over similar fixed helixes, and as these helixes move toward each other, the cavity that traps air between them gets progressively smaller. The reduction in volume forces an increase in intake pressure for a fixed volume.

Air quality: Oil-free vs. oil-injected air compressors

Atlas Copco has a wide range of products that can practically meet a variety of compressed air needs. So why don't we start with air quality, the main categories of which are oil injection technology and oil-free compressor technology. Most air compressors on the market rely on oil in the compression chamber for lubrication, sealing and cooling, but of course this means that some oil gets mixed into the air and tiny oil droplets travel through the machine and end up in the air network, eventually into a process or product.

Some oil-free air solutions available use oil-injected compressors with filter packs, but this is not 100% guaranteed to be oil-free. If your process cannot tolerate any oil in contact with your product, an oil-free air compressor is a great way to ensure there is no oil contamination. Simply put, an oil-free air compressor ensures that no oil or grease can enter the compression area of the compressor. The compression methods are similar in nature, but oil-free compressors are designed to use alternative sealing methods to ensure that oil cannot enter the compression space.

Air compressors Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and  for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries. If you are interested in atlas air filters or others air compressor consumable materials, please contact us.

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How to choose the right atlas air filter?

The air is full of particulates, aerosols and vapors that can contaminate compressed air even though you can't see them. Atlas air filters help clean the air as it passes through.

With the built-in air filter, you can remove any unwanted and potentially harmful particulates. However, there are many options for filters to choose from, how do you choose the right air filter for your air compressor and industry application?

Before buying atlas air filter, there are a few things you need to consider.

The first step is to determine what kind of contaminants the system must be protected from, and the level of air purity required for the application.

Next, you need to figure out how clean your air needs to be. As simple as it sounds, knowing how clean the air needs to be is an important step in choosing  atlas air filter. If your air is used for pneumatic purposes, you can opt for a basic dry dust filter instead of an activated carbon filter for breathing air.

Could your process or end product be damaged by oil?

There may still be some oil in the air. If your application is oil sensitive, installing an inline oil coalescing filter can limit harmful oils that could interact with the end use.

energy efficiency

Today, the energy efficiency of your plant is becoming more and more important. Rising costs of doing business make cost savings where applicable important. Lower energy means lower electricity bills. HEPA filters produce very clean air, removing particles smaller than 0.01 microns while minimizing pressure drop.

Air compressors Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and  for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries. If you are interested in atlas air filters or others air compressor consumable materials, please contact us.

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What is the difference between Atlas VSD and VSD+ compressors?

Variable Speed Drive (VSD) air compressors save energy by automatically adjusting motor speed to match compressed air production to demand. Standard VSD compressors do this by utilizing an induction motor coupled to a rotating screw host via gears. This is a traditional approach, but Atlas Copco never stops innovating. The VSD+ series of air compressors incorporates its own technology that takes energy efficiency and performance to a higher level.

The VSD+ compressor is a revolutionary design developed by Atlas Copco itself, featuring an Internal Permanent Magnet (iPM) motor. The iPM motor shares a rotor with the unit's asymmetrical compressor main element, so the new design uses a direct drive for greater energy efficiency. The entire VSD+ drive train is a closed circuit, and both the motor and the main engine are oil-cooled, which further reduces energy consumption. There are no couplings or gears between the motor and the screw host, and the VSD+ compressor operates extremely quietly.

The VSD+ air compressor adopts a professionally designed pulse valve, which can completely seal the host during shutdown. This prevents compressed air from escaping, eliminating bleed losses. Additionally, maintaining pressure in this manner reduces the energy required to restart the compressor, avoiding power spikes.

What are the advantages of VSD+?

High Energy Efficiency - The iPM motor saves an average of 50% energy compared to a fixed-speed air compressor that idles for long periods of time.

Smaller Footprint - The unique vertical design concept of the VSD+ machine reduces the system footprint by approximately 60%.

Improved Air Displacement - A significant 6% increase in FAD further improves the efficiency and performance of the VSD+.

Less Noise - The VSD+ machine features an innovative cooling fan that produces only 73 dB(A) of noise during operation. This allows the air compressor to be installed on the factory floor instead of in a separate machine room.

Ease of Service - VSD+ machines feature easily accessible parts, maintenance-free pulse drives and electronic blowdown.

Durable - During the R&D process, Atlas Copco engineers strived to refine each VSD+ component to ensure that it is robust and durable, minimizing maintenance downtime.

Lower Total Cost of Ownership - Approximately 37% less total lifecycle cost compared to a VSD machine of the same size.

Flexibility - VSD+ technology is available on a variety of Atlas Copco GA models.

Air compressors Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and air compressor consumable material for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries.

[ytengs-blog]

How can cost savings be achieved through proper air compressor maintenance?

Like all equipment, air compressors require maintenance after installation. However, air compressors are low maintenance compared to other costs and can be further reduced through careful planning measures. The choice of maintenance level is dictated by the reliability and performance required of the compressed air installation.

1. Maintenance

Air compressor maintenance accounts for a very small portion of life cycle costs. It depends on how the installation is generally planned and the compressor and auxiliary equipment selection. Costs can be reduced by condition monitoring combined with other functions, as well as central plant monitoring of the compressors, when using fully automatic operation of the plant. Annual maintenance costs are typically between 5-10% of the machine investment value. The total maintenance budget is affected by the following factors:

compressor type

Auxiliary equipment (dryers, filters, control and regulation equipment)

Run cycle load/unload

installation conditions

media quality

maintenance plan

Choice of security level

Energy recovery/cooling system

Utilization

2. Maintenance plan

Well-planned compressor maintenance can predict costs, extending the life of your machine and auxiliary equipment. By making greater use of advanced electronics, the machines are equipped with instruments for diagnostic checks. Reduce the cost of repairing minor faults and reduce downtime. This means maximum utilization of components and replacement only when really needed. The need to repair parts can be detected early, before damage occurs, thereby avoiding subsequent damage and unnecessary downtime.

With the compressor manufacturer's after-sales service, staff and original spare parts, it is expected that the machine will be maintained at a high technical operating standard, while providing the possibility to introduce corrections during the use of the machine based on new experience. Assessment of maintenance needs is carried out by specially trained technicians who also train in-house front-line maintenance personnel. It's best to have skilled in-house employees do routine inspections, as they may be able to see things that remote monitoring equipment cannot.

3. Auxiliary equipment

Installations can be easily expanded by equipping them with compressor ancillary equipment, for example, to improve air quality or monitor systems. However, even ancillary equipment requires repair and incurs maintenance costs (such as filter replacement, desiccant replacement, adaptation of other equipment and staff training). In addition, there are secondary maintenance costs, including oil and filter replacement costs. All of these costs must be assessed in cost of ownership calculations.

Air compressors Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and air compressor consumable material for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries.

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Where should the air compressor in the factory be placed?

Compressed air systems are generally placed in compressor rooms. Generally, there are two situations, one is that it is installed in the same room as other equipment, or it can be a room specially designed for compressed air system. In both cases, the room needs to meet certain requirements to facilitate the installation and ergonomics of the compressor.

1. Where should the compressor be installed?

The main rule in the installation of compressed air systems is to arrange a single central area for the compressors. 

Second, a separate area of the plant used for other purposes can also be used for compressor installation. Such installations should take into account certain risks and inconveniences. For example:Interference due to noise or ventilation requirements of the compressor; Physical risks and overheating risks; Condensate drain; Hazardous environments (e.g. dust or flammable substances); Space requirements and service accessibility for future expansion.

However, installation in a workshop or warehouse can facilitate the installation of energy recovery devices. It can also be installed outdoors under a roof if there are no facilities available for installing the compressor indoors. In this case, certain issues have to be taken into account: the risk of freezing of condensed water; rain and snow protection of air intakes, suction openings and vents; the required solid, level foundations(asphalt, concrete slab or flat tile bed); dust; the risk of flammable or corrosive substances and prevent other foreign matter from entering.

2. Compressor placement and design

Distribution system wiring should be performed for installations of compressed air equipment with long piping. Compressed air equipment is installed close to auxiliary equipment such as pumps and fans to facilitate servicing and maintenance; the building should be equipped with lifting equipment sized to handle the heaviest component of the compressor installation (usually the electric motor) and to have access to a forklift. It should also have enough floor space to install additional compressors for future expansion. Also, the clearance height must be sufficient to suspend an electric motor or similar equipment if required. Compressed air equipment should have floor drains or other means to handle condensate from compressors, aftercoolers, air receivers, dryers, etc.

Air compressors Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and air compressor consumable material for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries.

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Why should you choose a synthetic compressor lubricant?

1. Synthetic compressor lubricants help you prepare for the future

Air compressors lubricant oil play an important role in fulfilling our environmental responsibility. Switching from mineral to synthetic lubricants not only guarantees excellent compressor performance in all conditions, but also improves the sustainability of your compressed air system and reduces carbon dioxide emissions.

2. Synthetic Lubricants Lower Your Energy Costs

Do you know? By using Atlas custom synthetic lubricants in your oil injected screw air compressors, you can reduce energy costs, reduce lubricant consumption and maximize uptime.

Good viscosity (lubricant thickness) during operation

Reduced friction loss

Excellent air release avoiding double compression air bubbles

Viscosity behavior is more stable over the entire service life

3. Environmentally friendly synthetic lubricating oil

Using synthetic lubricants is an easy way to reduce carbon dioxide emissions and environmental impact. Switching to synthetic lubricants can help you:

reduce crude oil production

Reduce transportation needs

reduce packaging costs

Air compressor Consumable Material Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and air compressor consumable material for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries.

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How to deal with high temperature failure of screw air compressor accessories

Compared with the piston air compressor, the screw air compressor has more accessories: sensors, temperature control valves, filters, controllers, etc. The structure of the screw air compressor is more complicated than that of the piston air compressor, and the maintenance in the later period is also more complicated. more important. Of course, in the face of a high temperature environment, the operating status of the accessories also needs to be paid attention to: the normal operating temperature of the screw air compressor accessories is 75°C-95°C, and when it is higher than this temperature, it is a high temperature. Analyzing and judging the cause of the high temperature of the air compressor is the basis for solving the fault of the air compressor

Generally, the reasons for the high temperature of the screw air compressor are as follows:

One: The temperature sensor is out of order. The panel of the air compressor shows that the temperature is unstable, indicating that the temperature sensor is malfunctioning. Solution: replace the new temperature sensor.

Two: The temperature control valve is faulty. The function of the temperature control valve is to control the oil injection temperature of the main engine of the screw air compressor; it uses the temperature control element to control the opening degree of the valve core of the element according to the oil temperature, thereby controlling the amount of oil passing through the oil cooler, allowing the cold and hot oil to mix Finally, go to the main engine to control the fuel injection and exhaust temperature. Solution: Replace the temperature control valve core.

Three: The oil filter is clogged. The function of the oil filter is to filter the impurities in the lubricating oil and protect the main engine of the screw air compressor. If it is not replaced for a long time, or the operating environment is relatively harsh, the oil filter will be blocked, the flow rate of the oil circuit inside the compressor will be small, and the main engine cannot get enough lubricating oil for cooling in time, and high temperature will appear. Solution: replace the oil filter, or do a comprehensive oil circuit maintenance.

Four: The cooler is blocked. The cooler is also what we commonly call "radiating fins". The lubricating oil circulating inside the screw air compressor must be cooled by the cooler and then flow back to the compressor host. When the cooler is blocked, the lubricating oil of the air compressor cannot be cooled, which will cause The temperature remains high. Solution: Clean the cooler with dry compressed air, or disassemble it for cleaning if it cannot be cleaned.

Five: The controller of the screw air compressor is faulty. There is an alarm situation. If it is because of this reason that the high temperature is displayed on the panel of the air compressor. Solution: Replace with a new controller.

Six: Lack of lubricating oil. The lubricating oil of the screw air compressor not only has the function of lubricating and sealing, but also can cool the unit, so it is also called "coolant". When the machine lacks coolant, the heat generated by the air compressor cannot be cooled. The temperature will rise higher and higher, which is also one of the main factors causing the high temperature of the screw air compressor. Solution: add air compressor oil, if the high temperature is caused by the deterioration of lubricating oil, replace the air compressor lubricating oil.

The wear and replacement of accessories and regular maintenance are also one of the prerequisites for the normal operation of the air compressor, so regular maintenance should also be paid attention to during the daily work of the air compressor.

Air Compressor Spare Parts Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and accessories for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries.

[ytengs-blog]

Which air compressor is better for nitrogen generator?

Nitrogen is a colorless, odorless and non-toxic gas, relatively stable, so it is usually used in chemical synthesis and as a protective gas and so on. The equipment for making nitrogen is a nitrogen generator, and the nitrogen generator cannot work without an air compressor.

The compressed air required by the nitrogen generator must be dry, oil-free and clean compressed air with a pressure above 0.6Mpa and below 0.8Mpa. Because the molecular sieve of the nitrogen equipment of the nitrogen making mechanism has a good adsorption effect at this pressure. So when choosing an air compressor, it is best to choose an oil-free air compressor. Sometimes considering the relatively high price of oil-free air compressors, try to choose micro-oil air compressors as much as possible, but the post-processing equipment needs to be equipped with degreasers to ensure that the compressed air is relatively clean.

If it is a food nitrogen generator used in the food industry, it is recommended to choose an oil-free air compressor. So how big an air compressor should be selected for a nitrogen-making mechanism nitrogen equipment? Here we have a calculation method, the amount of compressed air required by the nitrogen-making mechanism nitrogen equipment with a purity of 99.9% is 6 times that of the nitrogen produced by the nitrogen-making mechanism nitrogen equipment, for example, the compressed air volume of a 3 cubic nitrogen-making mechanism nitrogen equipment Not less than 0.3m3/min per minute.

If the amount of compressed air required by the nitrogen-making mechanism nitrogen equipment with a purity of 99.99% is 8 times that of the nitrogen produced by the nitrogen-making mechanism nitrogen equipment, for example, the compressed air volume of a 5 cubic nitrogen-making mechanism nitrogen equipment is not less than 0.6m3/min. I hope this method can make it easy for you to choose the air compressor needed for the nitrogen equipment of the nitrogen generator.

The selection of air compressors for nitrogen generators is mainly determined according to the needs and purposes. When necessary, energy-saving air compressors can also be considered. Wuxi Youteng Machinery always pays attention to high-efficiency, energy-saving, quiet, and better-quality air compressors, and provides you with a complete set of compressed air system solutions.

[ytengs-blog]

How to choose a high-quality oil-free silent air compressor

Now the use of oil-free silent air compressors is still very extensive, and the demand for oil-free silent air compressors in most scientific research and medical industries continues to rise. The first condition for oil-free air compressor to ensure the good operation of the compressor under the premise of losing lubricating oil is high temperature resistance and friction resistance.

The high temperature resistance of the oil-free silent air compressor must reach above 360°C, and the test pressure must be more than twice the working pressure to ensure the normal operation of the compressor during the warranty period. For example, if an 8bar air compressor is actually used, a compressor with a test pressure of 16bar should be selected as the standard when selecting a product. This is also the production standard of the manufacturer: high-voltage design, high-voltage testing, and low-voltage use. Only in this way can normal use be guaranteed.

According to the actual situation of oil-free air compressor customers, the starting pressure has a crucial impact on noise, vibration and the service life of the host. Therefore, it is very critical to set the appropriate start and stop pressure difference. Generally, it is advisable to control it between 1bar-1.5bar. For example, in the medical and instrumentation industry, it is better to set the start and stop pressure between 4.5bar-6.0bar. In this way, the noise and vibration of the compressor are significantly reduced, and the life of the host is extended by more than 2 times.

The biggest advantage of the manufacturer to customers is the support of technical selection, and can design products according to the actual working conditions of customers. Wuxi Youteng Machinery Co., Ltd., as the distributor of Atlas air compressors, can not only provide you with technical support, but also get more favorable prices

How to judge the noise and quality of the oil-free air compressor you purchased. The sealing performance of an oil-free air compressor is a potential criterion for determining noise and quality. 2 times the working pressure can be used to test the various indicators of the air compressor.

Air Compressor Spare Parts Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and accessories for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries.

[ytengs-blog]

How to avoid demagnetization of permanent magnet variable frequency air compressor?

Sometimes due to external force conditions or improper operation, it is inevitable that the permanent magnet variable frequency air compressor will demagnetize. A permanent magnet variable frequency air compressor, its permanent magnet synchronous motor will be in the case of high current, high temperature or severe vibration. Irreversible demagnetization occurs, and the following will introduce how to solve the demagnetization problem of the air compressor.

1. Correctly choose the power of the permanent magnet motor

Demagnetization is related to the power selection of the permanent magnet motor in the variable frequency air compressor. Correct selection of the power of the permanent magnet motor can prevent or delay demagnetization. The main reason for the demagnetization of the permanent magnet synchronous motor is that the temperature is too high, and overload is the main reason for the high temperature. Therefore, a certain margin should be left when selecting the power of the permanent magnet motor. According to the actual situation of the load, generally about 20% is more appropriate.

2. Avoid heavy load starting and frequent starting

Permanent magnet motors try to avoid direct starting or frequent starting with heavy loads. In the process of asynchronous starting, the torque is oscillating, and in the valley section of the torque, the stator magnetic field demagnetizes the rotor magnetic poles. Therefore, try to avoid heavy load and frequent starting of the asynchronous permanent magnet synchronous motor of the air compressor.

3. Improved design

a. Appropriately increase the thickness of the permanent magnet From the perspective of the design and manufacture of the permanent magnet synchronous air compressor motor, the relationship between the armature reaction, electromagnetic torque and permanent magnet demagnetization should be considered. Under the combined action of the magnetic flux generated by the torque winding current and the magnetic flux generated by the radial force winding, the permanent magnets on the rotor surface are likely to cause demagnetization. When the air gap of the motor remains unchanged, the most effective way to ensure that the permanent magnet does not demagnetize is to increase the thickness of the permanent magnet appropriately.

b. There is a ventilation slot circuit inside the rotor. The important factor to reduce the temperature rise of the rotor and affect the reliability of the permanent magnet motor is the demagnetization of the permanent magnet. If the rotor temperature is too high, the permanent magnet of the variable frequency air compressor will produce irreversible demagnetization. When designing the structure, the internal ventilation circuit of the rotor can be designed to directly cool the magnetic steel. Not only reduces the temperature of the magnetic steel, but also improves the efficiency.

Air Compressor Spare Parts Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and accessories for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries.

[ytengs-blog]

What is the Difference between a Cold Dryer and a Adsorption Dryer?

1. Working principle

The cold dryer is based on the principle of freezing and dehumidification. In the future, the saturated compressed air will be cooled to a certain dew point temperature through heat exchange with the refrigerant, and a large amount of liquid water will be condensed at the same time, and then separated by the gas-liquid separator. The effect of water removal and drying; the drying machine is based on the principle of pressure swing adsorption, so that the saturated compressed air is in contact with the desiccant under a certain pressure, and most of the moisture is absorbed in the desiccant, and the dried air enters the downstream Work to achieve a deep drying effect.

2. Water removal effect

The cold dryer is limited by its own principle. If the temperature is too low, the machine will cause ice blockage, so the dew point temperature of the machine is usually kept at 2~10°C; Deep drying, the outlet dew point temperature can reach below -20°C.

3. Energy loss

The cold dryer needs to adapt to a higher power supply; the adsorption dryer only needs to control the valve through the electric control box, and the power supply is lower than that of the cold dryer, and the power loss is also less.

4. Air loss

The cold dryer removes water by changing the temperature. The moisture generated during operation is discharged through the automatic drain, so there is no loss of air volume; There is about 12-15% regeneration gas loss.

5. Failure rate

The cold dryer has three major systems: refrigerant, air, and electrical. The components of the system are relatively complex, and the probability of failure is greater; the adsorption dryer may fail only when the valve moves frequently. Therefore, under normal circumstances, the failure rate of the cold dryer is higher than that of the adsorption dryer.

Air Compressor Spare Parts Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and accessories for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries.

[ytengs-blog]

What are the advantages and disadvantages of Cold Dryers and Adsorption Dryers?

Advantages of cold dryer

1. No compressed air consumption. Most users do not have very high requirements on the compressed air dew point. Compared with the suction dryer, the use of the cold dryer saves energy.

2. Routine maintenance is relatively simple. There is no valve wear, just clean the automatic drain filter on time.

3. Low running noise. In the air-compressed room, the running noise of the cold dryer is generally not heard.

4. The solid impurity content in the gas discharged from the cold dryer is less. While discharging the condensed water, part of the oil vapor can also condense into liquid oil mist, which is discharged out of the machine along with the condensed water.

Shortcoming:

The effective air supply volume of the cold dryer can reach 100%, but due to the restriction of the working principle, the dew point of the air supply can only reach about 3°C; every time the intake air temperature increases by 5°C, the refrigeration efficiency will drop by 30%, and the supply air The air dew point will also increase significantly, which is greatly affected by the ambient temperature.

Advantages of the Adsorption Dryer

1. Compressed air dew point can reach -70℃.

2. Not affected by ambient temperature.

3. Filtration effect and filtering impurities.

shortcoming:

1. There is compressed air consumption, which is easier to consume energy than a cold dryer.

2. It is necessary to add and replace the adsorbent regularly; the valve parts are worn out and require daily maintenance.

3. The suction dryer has the noise of depressurization of the adsorption tower, and the operating noise is about 65 decibels.

The users can equip a dryer corresponding to the air compressor according to the quality of the compressed gas and the cost of use. Atlas Copco not only provides reliable and effective compressed air solutions for global customers, but also has post-processing equipment for air compressors such as refrigeration dryers and suction dryers. At the same time, Atlas Copco has introduced new anti-counterfeiting technology to help identify the authenticity of flag air compressor post-processing equipment and avoid damage to machinery and equipment caused by counterfeit and shoddy products. If necessary, please contact us.

Air Compressor Spare Parts Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. was established in 2012, mainly engaged in air compression system, vacuum system design consulting, engineering project and repairing services etc. Our company mainly provides air compressor equipments and accessories for compressors of world-famous brands. We also support OEM. In addition, The company has a number of experienced technicians to perform maintenance work on various air compressors, dryers and filters, which have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers from worries.

[ytengs-blog]

Advantages and disadvantages of permanent magnet inverter air compressor

Recent years, the application of air compressors has become more and more extensive. Next, the editor will show you about permanent magnet inverter air compressor.

Advantages of Permanent Magnet Inverter Air Compressor

1. The air pressure is stable

Because the variable frequency screw air compressor utilizes the stepless speed regulation characteristics of the frequency converter, it can start smoothly through the controller or the PID regulator inside the frequency converter. For occasions where the gas consumption fluctuates greatly, it can quickly adjust the response.

2. Variable flow control

The power frequency-driven air compressor can only work in one displacement, and the variable frequency air compressor can work in a relatively wide range of displacement. The frequency converter adjusts the motor speed in real time according to the actual gas consumption to control the exhaust gas volume. When the gas consumption is low, the air compressor can be automatically put to sleep, which greatly reduces the loss of energy.

3. Start without impact

Since the inverter itself contains the function of a soft starter, the starting current is within 1.2 times of the rated current, and the starting impact is small compared with the power frequency starting that is generally more than 6 times the rated current. This impact is not only on the power grid, but also on the entire mechanical system, which is greatly reduced.

4. Low noise

service life. If the fan is also driven by variable frequency, the noise of the air compressor can be significantly reduced.

5. The voltage adaptability of the AC power supply is better

Due to the over-modulation technology adopted by the inverter, it can still output enough torque to drive the motor to work when the AC power supply voltage is slightly lower. When the voltage is slightly higher, the voltage output to the motor will not be too high. For the occasion of self-generating, the variable frequency drive can better show its advantages.

Disadvantages of Permanent Magnet Inverter Air Compressor

Due to the influence of its own composition principle, the inverter air compressor also bears certain risks in the process of use. One of the risks is demagnetization due to high temperature. We all know that the element in the permanent magnet motor is the magnetic steel, and the magnetic steel is afraid of high temperature. Permanent magnet inverter air compressor will gradually demagnetize under long-term high temperature conditions. The higher the temperature, the greater the risk of demagnetization.

There are many cases in which permanent magnet air compressors are used in various industries due to the demagnetization of magnetic steel. There are many cases of permanent magnet air compressor function failure. Once the permanent magnet air compressor is demagnetized, the speed is amazing, and the current of the motor will continue to increase after partial demagnetization. The increase in power consumption will increase the cost of electricity for users, and in serious cases, the finished products of the product line may be scrapped.

Permanent Magnet Inverter Air Compressor Supplier - Youteng

Wuxi Youteng Machinery Co., Ltd. has a number of experienced technicians who carry out maintenance work on various air compressors, dryers and filters, and have a certain influence in China. At the same time, the company also participates in motor overhaul projects and maintains various motors. We have a complete service system and sufficient spare parts to relieve customers' worries. If you want to buy permanent magnet inverter air compressor or other air compressors wholesale, please contact us.