FIELD: ventilation.
SUBSTANCE: invention relates to a radial (centrifugal) fans and smoke ventilation, installed on the roofs of buildings and ensuring the removal of smoke, gases and air from the premises of the building in case of fire or gas pollution due to natural draft. Roof radial fan and smoke ventilation impeller made of curved blades in the form of a hollow spherical zone, a vertical axis, on which the impeller rotates, while on the upper base of which has a blade-cup aluminium casing and apply Alu Bushings.
EFFECT: efficient removal of smoke and air temperatures up to 600 degrees.
2 dwg
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