| Specifications | Tad Krysiak |
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| Specifications | Tad Krysiak |
| Business section |
| Specifications | Tad Krysiak |
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| Content | 100 Hyde Road . Farmington, CT 06034 . Phone (860) 674-1515 . Fax (860) 674-8536 sales@us.ebmpapst.com . www.ebmpapst.us ebm-papst Inc. Press News The theory and practice of small fans (2) Fan variants: what type of drive, what type of material? Small fans are differentiated not only in their type of construction but also by the type of drive used and the materials employed. An increasing role is played by integrated controls that are now possible thanks to modern electronics. These three different criteria are often interrelated and depend on the type of fan construction used. In this article we will explore these connections and the characteristics that result from them. An energy input is necessary to set air in motion. When viewed in this way, the drive can be seen as the heart of the fan and, just like the heart, the drive has to work in a ‘controlled’ way. For many modern applications the control electronics are just as important as the drive itself. Last but not least, the materials used to manufacture the fan must also be suitable for the application, as well as allowing their manufacture to be at a reasonable cost. An optimal combination of these three ‘components’ will result in an efficient fan with a long service life. Drive options All of the various types of fans discussed so far can be equipped with different drive motors. The intended place of installation is of crucial importance for making the right choice of motor. Certain motor designs are particularly suitable for special applications, despite appearing at first sight to possess serious disadvantages. Generally one is looking for fan motors with ‘rigid’ motor characteristics, which just means that the motor speed hardly alters over the total fan curve or, to put it another way, the speed of the motor should only demonstrate minimal fluctuations, even though the torque requirement of the fan is changing dependent on the operating conditions. Modern fans are now generally all equipped with small, electronically commutated DC motors, also termed EC motors. This kind of simple motor is considerably more cost-effective than the AC asynchronous types that were often used before. Fan speeds from 1,000 up to 6,000 rpm are now a possibility – in special cases this can be extended up to 15,000 rpm and even higher. Moreover the efficiency factor of DC drives is significantly higher |
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| Following Datasheets | thermal_management_solutions_for_medical_applications_brochure_009067-1-en_low_res_17jan12 (24 pages) thermal-1 (5 pages) thermal-3 (1 pages) thermal-4 (6 pages) Thermal-Behavior-Microelectronic-systems (10 pages) Thermal-Resistance-Pin-Fin_Heatsinks (8 pages) Thermal-Solutions-Brochure (8 pages) thermal-system_mg (1 pages) thermal (9 pages) thermalapplet-1 (9 pages) |
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