CENTRIFUGAL FAN AND HEATING DEVICE EQUIPPED WITH SUCH CENTRIFUGAL FAN Russian patent published in 2020 - IPC F04D29/42 

FIELD: ventilation.

SUBSTANCE: invention relates to a centrifugal fan comprising a fan housing with a radial outlet, which is made in the radial peripheral wall of the fan housing, a rotor rotatably disposed in the fan housing and provided with an inlet nearby a longitudinal axis of rotation. Near the axis of rotation of the rotor, the fan housing is provided with an axial inlet and a tubular part which extends in the fan housing from the radial outlet opening made in the radial peripheral wall and inward along the radial peripheral wall. Invention also relates to a heating device comprising a burner and a centrifugal fan according to the invention.

EFFECT: invention is aimed at reducing fan noise, as well as reducing cost and labour costs when producing such a fan.

22 cl, 9 dwg