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Oil-free, dry running compressors 0 pages
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| l\\ Compressor cross section showing the completely seeled configuration with magnetic coupling (top) and the conventional direct coupling with shaft seals (bottom). | |||||||||||
| OIL-FREE, DRY RUNNING COMPRESSORS FROM HAUG Magnetic Coupling Option Ensures High Production Security with Low Operating Cost By Roberto Chellini | |||||||||||
| very precise manu fact tiring procedures), make it possible to produce dry running compressors that can be used for continuous operation even under extreme climatic conditions. Extensive use of Light alloys in the moving components and a .short piston stroke that reduces the mean piston speed to less than 8.2 fps (2.5 m/s) produce very small mass forces and thus less vibration. As a direct consequence these compressors do not need a foundation. Haug compressors are usuͭally directly driven by electric-motors. When the gas being handled has to be hermetically sealed inside the com- | |||||||||||
| Fritz Haug AG of St. Gallen, Switzerland, was established in 1-896 and has long specialͭized in the manufacturer of oil-less and dry-running trunk-piston com pressors used to compress air and other gases. These small, compact pis-Toil compressors, with powers up to 100 hp (75 km are manufactured according to the kit system, which allows easy and cost-effective setup of units tailored to different applications according to customer specifications. Depending on the suction pressure, compression ratio and the delivery pressure, which can reach 218 psi Cl 50 bar), these compressors feaͭture up to four stages. | Cylinders can be cooled by air or water according to the service, the delivery pressure and the gas being handled All Haug compressors are designed for "oil-less" applications, which means there is no oil anywhere in (he compresͭsor. Not only can the cylinders run dry, but alio the crank mechanism runs with no oil. Such oil-free operation is made possible by the adoption of sealed special roller bearings filled with grease for life. Thanks to a patented conͭnecting rod system, ihe bearings feature an operating life of 10,000 to 20,000 hours without maintenance and after lubrication. Cylinders feature internal | surfaces that are coated, honed with special machinͭery, thermally tempered and hardened for long life cycles. Aluminum pistons are coated witli Teflon, and the two-part piston rings ensure that compression efficiency is mainͭtained at a high level throughout the whole life. The choice of the piston ring maͭterial and the piston ring form is determined by the compression media and the mode of operation. The frictionless stainless steal valves feature large flow cross sections for minimizing pressure losses. The use of high strength materials and adherence to tight tolerances (Shanks io | |||||||||
| CoHPRESSORTech | |||||||||||
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| JANUABY-TTRRUARV 2004 | |||||||||||
