Oil-Free Permanent Magnet Variable Frequency Screw Air Compressor 7.5-410kW

Product Description:

The oil-free lubrication permanent magnet variable frequency screw air compressor is a new generation of high-efficiency, energy-saving, and environmentally friendly air compression equipment. It adopts innovative water lubrication technology and permanent magnet synchronous variable frequency drive to achieve 100% oil-free compression, perfectly meeting the strict air quality requirements of industries such as medical, food, and electronics. This product combines the advantages of high efficiency, energy saving, long service life, and intelligent control, and is an ideal alternative to traditional oil air compressors.

Why choose oil-free compressor:

Air quality plays a decisive role in many cases. If solid particles, water vapor, oil, and oil vapor appear in the compressed air system, it will lead to downtime, product damage, and even product recalls, damaging brand reputation. Worse still, it may also damage the credibility of consumers and products.

• Improve reliability
  Reliable product and system design can provide high-quality air, protect sensitive downstream gas equipment, reduce maintenance work, and extend equipment lifespan.

• Improve productivity
  The use of certified oil-free zero grade compressors ensures zero air pollution and eliminates the risk of product damage and waste.

• Improve maintainability

Our oil-free equipment is specially designed for easy maintenance and repair, providing convenient access to consumable components.

• Reduce lifecycle costs

Oil free scroll compressor is suitable for your application:

Gardner Denver offers reliable oil-free products with a wide variety, always suitable for your industry and application. We will evaluate and recommend more suitable solutions to improve the productivity of the device, thereby providing a zero pollution risk final product.

Hospitals, laboratories, universities Pharmaceutical and Biotechnology Medical equipment, plastics

Canned food, beverages, brewing Glass manufacturing Electronics and semiconductors

Food processing Electronics assembly Textile industry

Bottling and distillation Printing Turf management

Advantages of oil-free lubrication air compressor:

No oil Reliable Energy conservation Mute

Advantages of oil-free lubrication permanent magnet variable frequency screw air compressor:

Pure and oil-free

• Using water lubrication cooling technology, no oil coolant is used in the compression chamber to produce truly oil-free compressed air.

Safe and reliable

• A screw forms 12 compression chambers with two star wheels on the left and right, and rotates once to produce 12 air compression processes.
• The two star wheels of a single screw air compressor are symmetrically distributed on both sides of the screw, ensuring balance force. The axial and radial forces acting on the screw can cancel each other out, effectively suppressing the vibration source.
• The rotor is balanced in terms of force, with small pulses and vibrations, resulting in more reliable performance and longer lifespan.

Efficient and energy-saving

• When a single screw compressor works, each screw groove on the screw is used twice in one rotation, making full use of the screw groove space. Therefore, compared with other rotary compressors, its structural size is smaller.
• The depth of the screw groove of a single screw becomes shallower with the increase of compression chamber pressure, and the depth is zero at the end of exhaust, so theoretically there is no clearance accumulation.
• Using water as a coolant, the temperature during the compression process of the main engine is lower, the efficiency is higher, and the energy-saving effect is significant.

Silent and environmentally friendly

• The motor and screw are directly connected to drive without a gearbox, eliminating high noise components.
• The silent box type outer casing design effectively seals the noise inside the unit, keeping the overall operating noise at a low level.

Our oil-free lubrication permanent magnet variable frequency screw air compressor has the following advantages:

DH oil-free lubrication permanent magnet variable frequency screw air compressor adopts water lubrication cooling technology, and no oil coolant is used in the compression chamber, providing users with pure compressed air to meet various production needs.

Efficient host

• Directly spray pure water into the compression chamber for cooling, without using oil coolant, truly oil-free compressed air.
• The head rotor is made of stainless steel material, which will never rust.
• The bearings adopt high-end stainless steel bearings to ensure the reliability, high efficiency, and low noise of water lubrication.
• The host has no metal or metal meshing parts, the rotor is balanced in force, stable and reliable, and has a longer lifespan.

Rare earth permanent magnet variable frequency motor
The Ge Nan Deng Fu DH series water lubricated oil-free screw compressor is equipped with a rare earth permanent magnet variable frequency motor drive. Compared with AC asynchronous motors, rare earth permanent magnet motors have a simple structure, reliable operation, high power density, and wide speed range, making them an ideal power choice for high-efficiency and energy-saving air compressors.

Electric rotor
Permanent magnet rotor, with lower losses and increased efficiency by 5-10%

Small size and light weight
Compared to asynchronous motors of the same power, it is 1 to 2 machine base sizes smaller

Low noise
Reasonable slot pole coordination, magnetic field design, wider operating frequency, and lower operating noise

High starting torque
The starting torque and overload capacity of permanent magnet synchronous motors are one power level higher than asynchronous motors

Start without impact
Smooth soft start, starting current not exceeding twice the rated current

Wide speed range
The rotor does not require electrical excitation and can achieve low-speed high torque

Advantages of frequency conversion

• Ordinary air compressors usually adjust the air intake to regulate the air volume, which keeps the compressor running at rated speed. Even if the air volume decreases, the actual energy consumption will not decrease proportionally
• The displacement of the variable frequency air compressor can be perfectly combined with the user's gas consumption
• When purchasing an air compressor, the traditional cost (i.e. purchase cost and operation and maintenance cost) accounts for only 20% of the total cost, while energy consumption accounts for 80%. Compared with ordinary industrial frequency air compressors, DH series variable frequency air compressors save more than 30% energy
• Since your investment and start-up, the DH series variable frequency air compressor has been saving you costs

Start smoothly

• No peak starting current
• Completely eliminating energy consumption during unloading and reducing the burden on electrical components
• The low starting current of frequency conversion has no impact on the power grid, which is particularly important for users in factories located in unstable areas of the power grid
• Stable output pressure
• Variable frequency control maintains the pressure band within 0.1 bar, without the need for a large storage tank. The pressure will not exceed the required value, and there is no energy waste

No startup impact

• The low starting torque of the motor has minimal impact on mechanical components, resulting in longer service life of mechanical components such as bearings
• Transmit torque according to actual needs without wasting excess energy

Excellent frequency converter

• Built in frequency converter, unique air duct design, stable and reliable
• Adopting cutting-edge vector control technology, it has excellent low-frequency speed characteristics and dynamic response characteristics, and complete protection functions, which can achieve comprehensive protection from the frequency converter to the motor
• Safe lightning protection design with built-in lightning overcurrent protection device effectively enhances the self-protection capability of the frequency converter against induced lightning

intelligent control

• Powerful frequency conversion control protection function, automatic adjustment of load rate, comprehensive protection for motor and other components
• Adopting personalized design, users can customize settings for alarm, start, stop, frequency hopping and other functions according to their needs. The self diagnostic LCD touch screen controller has a MODBUS RS485 communication interface and can be remotely controlled

The entire series comes standard with stainless steel piping

• The entire range of Grundendfos water lubrication products comes standard with stainless steel piping. Compared to ordinary carbon steel piping, stainless steel piping has significant advantages:
• Stainless steel is corrosion-resistant, does not accumulate scale, and does not rust, dispelling customers' doubts about carbon steel pipe rusting from the source
• Stainless steel pipes have smooth inner walls and low friction coefficients, significantly reducing pipeline pressure loss
• Stainless steel pipes are resistant to high temperature and high pressure, and will not leak or age after long-term use, effectively extending product life

Fully automatic control of waterway circulation system

• The internal water circulation system of the air compressor consists of four major components: a water softener, a water filter, a water cooler, and a water air separator. The entire system operates under fully automatic control, strictly controlling the circulating water to always be in a highly clean state to meet the needs of the unit
• The various components of the waterway circulation system adopt a silent design to remove high-frequency noise, greatly reducing the operating noise of the water lubrication unit. The water filter and water vapor separator are made of stainless steel material, which provides more stable quality and better performance

Product functions and specifications

Laser cutting matched with air compressor

7-315kW product performance parameters

37-250kW low-pressure product performance parameters (pressure: 3/4 bar)

More efficient and energy-saving two-stage compression technology

In the two-stage compression process, the compression ratio of each stage is low, which correspondingly reduces the bearing load and extends the component life.

• By using two-stage compression, the compression ratio of each stage is reduced to minimize internal leakage
• By cooling between stages, the second stage compression is made closer to isothermal compression, achieving energy savings

Performance parameters of two-stage compression products (pressure: 8/10 bar)

55-410kW medium voltage product performance parameters (pressure: 20/30/40/60bar)

Packing and Shipping:

Product Packaging:
The Oil free lubrication permanent magnet variable frequency screw air compressor comes in a sturdy cardboard box with the product image and specifications printed on the outside. Inside, the product is securely packaged with foam inserts to prevent any damage during transportation.
Shipping:
Our standard shipping time is 3-5 business days. For expedited shipping, please contact our customer service team. We ship via trusted carriers such as UPS, FedEx, and USPS and provide a tracking number for your convenience.

FAQ:

Q: What is the brand name of this product?
A: The brand name of this product is Aipu.
Q: What is the model number of this product?
A: The model number of this product is Oil free lubrication permanent magnet variable frequency screw air compressor.
Q: Where is this product made?
A: This product is made in China.
Q: Does this product have any certifications?
A: Yes, this product is certified by ce.ul.
Q: What is the minimum order quantity for this product?
A: The minimum order quantity for this product is 1pc.
Q: Is the price of this product negotiable?
A: Yes, the price of this product is negotiable.
Q: What is the packaging details for this product?
A: The packaging details for this product is container.
Q: How long is the delivery time for this product?
A: The delivery time for this product is 10 days.
Q: What are the payment terms for this product?
A: The payment terms for this product is tt.
Q: What is the supply ability of this product?
A: The supply ability of this product is 100t/y