Multi Functional Industrial Screw Compressor With Oil Cooled Pm Synchronous Motor

Integrated oil cooled pm synchronous motor

• Oil cooled permanent magnet motors adopt double layer design. The motors are cooled down by cycling lubrication oil of air compressors, so they can operate in low temperatures at all frequencies. Such motors have eliminated degaussing risks at high temperatures by breaking through traditional fan-cooling mode. They can reduce motor power and achieve energy efficiency in real sense.
• Permanent magnetic synchronous motor (PM motor) adopts high-performance NdFeB permanent magnet which will not lose magnetism under 200°C and its service life reaches as long as 15 years
• Stator coil uses dizzy-resistant enameled wire dedicated for frequency converter with outstanding insulating property and longer service life
• Coaxially integrated structural design, the motor has no bearing structure with high transmission efficiency
• Fill grease at regular intervals for free, and bearing replacement at regular intervals for free
• The motor has function of temperature protection (PTC/PT100)
• Oil cooled permanent magnet motors adopt sealed-up structure according to IP65 protection level. With waterproof and dust proof features, these motors hold lower requirements for environment. The motors well protected from dust and foreign matters present longer life span.

Permanent magnetic motor

• Reasonable structure and high power density
• Very small rotator inertia and very fast response speed
• Ultrahigh intrinsic coercive rare earth permanent magnetic material with strong anti demagnetizing capacity
• Possible constant torque output within scope of locked rotator and rated rotating speed
• Special asymmetrical magnetic circuit design, making low-rotating-speed torque ripple small
• High balancing precision, stable and high-speed operation, low noise and small vibration
• Full-sealed or high protection-grade appearance structural design

Magnetic steel

• Punching uses high-performance low-loss silicon, we conduct simulation analysis of mechanical strength with finite element method so as to make rotator inertia reach the minimum on the condition that enough mechanical rigidity and mechanical strength.
• Rotator magnetic steel adopts high-performance NdFeB permanent magnetic material to form sine wave air-gap field
• Axial flow uses the processing method of embedded bond, which simultaneously meets requirements of optical axis and bond axis.

Winding

• Punching uses high-performance low-consumption silicon steel sheet;
• Insulation grade of enameled wire is grade C and integral insulation is grade F
• Shell uses high-intensity aluminum profile shell, appe final optimization through finite element temperature gradient and good heat dissipation effect;

SKF-bearing

Compared with bearings of other brands, SKF bearing, it has good abrasive resistance, superior fatigue resistance, strong corrosion resistance and comfortable muting property, making longer service life, higher reliability and lower noise of permanent magnetic synchronous non-inductive motor.

Infinite volume control air inlet system

The compressor adopts infinite volume control air inlet system. It could operate without magnetic valve. Built-in function of the check valve can reduce malfunctions. The compressor is free from unloading process and shows higher energy efficiency. This compressor can operate at frequencies from 0-300HZ and realize high energy efficiency in real sense.

Industrial manager function

Wan Beardsley air compressor system can pre-set weekly work schedule according to your working hours in the factory, air compressor will punctually and automatically power on ana off accordinq to preset working schedule

Variable-frequency control range is broader with more energy conservation

It has advantages of low rotating speed high output torque, variable-freciuency control mode is broader than ordinary inductive variable-frequency motor, especially its 30%-80% air consumption in low-loaa working area saves by 15%-38% when compared with that of power-frequency compressor, and by 10% when compared with ordinary variable-frequency compressor. The lower load ratio, the more obvious the enerqv-savinq effect.

Leading constant pressure control

AVF permanent magnet variable frequency screw compressors can sustain the air supply at the pressure of 0.1 bar in any loading conditions. In case of larger demands for air supply, the compressor can increase its rotation speed without changing the pressure to guarantee the air volume. In case of lower demands for air supply, the compressor can reduce its rotation speed without changing the pressure to meet such demands. In case of no demands for air supply, the compressor will switch to sleep mode to save energy. When actual pressure achieves the wakening standard, the compressor will immediately start up with rapid response of frequency converters even in sleep mode.

High-performance vector frequency converter

• Standard equipment with radio-frequency reactor which effectively reduces magnetic field interference outside high-frequency machine generated by frequency converter;
• Reliably reduces peak current when it is started, realizes stable starting;
• Saves cost of electrical power units;equipped with standard dust screen, circuit board is processed with surface coating, so antifouling, anti-dust and damp-proof effects are realized;
• equipped with standard dust screen, circuit board is processed with surface coating, so antifouling, anti-dust and damp-proof effects are realized;
• Special heat dissipation design prevents tripping under summer high temperature;
• Standard protocol of CAN with wire road standard of hardware and strong noise resistance;
• Rapidly track change of pressure, control pressure fluctuation within ±0.01Mpa, optimal power is used to accurately provide necessary air amount;
• Advanced integrated draught fan, and motor uses double-vector variable-frequency control technology.

High efficient centrifugal fan-cooling control system of double frequency (optional package)

• centrifugal fan-cooling permanent magnet motors adopt variable frequency control technology. They can save about 50% of the energy. Rotation speed of the cooling fan can be adjusted according to gas emission temperature, so as to reduce power consumption. Stable temperature of the overall system can improve durability of parts. In addition, variable frequency cooling fan can lower the noise.
• Centrifugal cooling fans are characterized by high efficiency, low noise, balanced pressure curve and other outstanding performances.

Similarly, for two models with above rated power 37kw, when load rate is only 605, input power of power-frequency model under ordinary air inflow throttling control is 39.2kw_; while shaft power of permanent magnetic power-frequency motor is 23.6kw with electricity saving ratio being 37.5%. If we calculate according to 40,000 operating hours per year, annual electric charge of ordinary asynchronous power-frequency model is RMB 107,200, however, annual electric charge of permanent magnetic synchronous servo model is RMB 65,800, saving RMB 41,400 in each year.

Difference of servo permanent magnetic variable-frequency technology and non-variable frequency technology in energy conservation

Non variable-frequency unit regulates demand for air discharqe with modulatinq capacity valve, while servo permanent magnetic variable-frequency unit regulates demand for air discharge in way of motor frequency conversion, and comparison of energy conservation between the two is as following:

Company profile:

Wan Beardsley Compression Machine (Shanghai) Co., Ltd is a medium and large-sized enterprise specialized in research, development and production of air compressors. By virtue of fruitful technological strength and advanced and complete production and testing equipments, this company pursues enterprise tenet “Achieve high quality with conscientiousness and create a centennial brand with quality”, strictly performs the commitment “be the most energy-efficient screw air compressor”, continuously seeks for sustainable improvement of products, process and system, and increasingly improves product properties, quality and reliability so as to make out R & D and manufacturing capacity step onto a new stair in manufacturing technology of air compressor. Our product quality has reached internally first-class level, and some products have been exported to and supported Southeast Asia and European and American markets.

Our Advantage:

Every permanent magnet variable-frequency air compressor produced by Wan Beardsley through sophisticated air compressor vector frequency control technology reaches national grade-2 energy-saving effect, some products have grade-one energy efficiency, Wan Beardsley screw air compressor is featured by high efficiency, low noise, small vibration, small volume, low expense, convenient maintenance, beautiful appearance and so on, the product uses intelligent module control system and favorable human-machine interface to realize fault self diagnosis, servo-type gas flow automatic adjustment and 24-hour unattended operation, and it belongs to one of the most advanced machine type both home and abroad. At present, Wan Beardsley series of screw air compressors include: integrated permanent magnet variable-frequency series, non-inductive permanent magnet variable-frequency series, servo permanent magnet variable-frequency series, low-pressure permanent magnet variable-frequency series, two-stage compression permanent magnet variable-frequency series, oil cooling permanent magnet variable-frequency series of screw air compressors, refrigerated dryer series, adsorption dryer series, combined dryer series, high-efficiency precision dryer, gasholder, etc. Products are extensively applied to industries like machinery, furniture, textile, chemical fiber, medicine, food, metallurgy, electronics, war industry, environmental protection, etc.

FAQ:
1. Before quoting, what should users offer?
1). Discharge pressure (Bar, Mpa or Psi)
2). Air discharge/Air flow/Air capacity (m3/min or CFM)
3). Power supply (220/380V, 50/60Hz, 3Phase)
2. If I don't know the pressure and air flow, what should I do?
1). Take the picture of nameplate, we will advise the suitable air compressor to you.
2).T ell us what industry you are, we can advise the suitable one (so as to air tank / air dryer / air filters).