FIELD: fan-making industry, applicable in designing of centrifugal roof fans of general-economic purpose. SUBSTANCE: the centrifugal roof fan has an impeller with backward curved blades, supporting shell with flanges, attached to which is the centrifugal guide vane device, section manifold with a confuser inlet pipe connection, having a diffuser section at the end introduced inside the impeller, and an electric drive with a protective housing. The relations are given. EFFECT: enhanced efficiency of the fan, reduced its noise- and vibroactivity. 1 dwg
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|---|---|---|---|
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|
RU2124652C1 |
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