| 摘要 |
FIELD: filters for filtration of the gas streams containing grit and other solid impurities. ^ SUBSTANCE: the invention is pertaining to the field of filtration of the gas streams containing grit and other solid impurities and may be used for air-cleaning devices of the gas-turbine installations. The fold filter contains a zigzagging folded filtering surface made out of an electret sheeting material in such a manner, that the filtering surface is formed as a regular fold structure consisting of flat faces in the form of parallelograms, connected among themselves by direct edges in the form of sectors of sectors of a cylindrical surface on all mate sides of parallelograms. The design of the fold filter allows in the rather small overall dimensions to dispose a significant surface at a low hydraulic friction. ^ EFFECT: the invention allows in the rather small overall dimensions of the fold filter to dispose on it a significant surface at a low hydraulic friction. ^ 4 dwg
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