| 摘要 |
FIELD: ventilation equipment employed in erection and reconstruction of engineering system intended for objects of various assignment. SUBSTANCE: ventilation facility includes body with two spiral guides, two suction and two pressure branch pipes, impeller with bearing and working parts, partition. Bearing part of impeller is fitted with blades, partition is made up of two parts and is located outside of impeller. EFFECT: stable and high-efficiency heat mass transfer. 6 cl, 5 dwg
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