DUST-COLLECTING UNIT Russian patent published in 2008 - IPC B04C9/00 

FIELD: engines and pumps.

SUBSTANCE: dust-collecting unit comprises a housing, a gas flow peripheral inlet, a filtration element and a dust accumulation bin. The gas flow peripheral inlet is arranged in the unit central part and represents an inlet branch pipe jointed to the cyclone housing at a direct angle, the said cyclone housing being furnished with two coaxial branch pipes, one of them accommodating a filtration element representing a filtration bag and the other one accommodating a dust accumulation bin representing a dust accumulation bag. The said cyclone represents a scroll-type housing with a fan attached thereto. The axis of the aforesaid fan is parallel to that of the branch pipes accommodating the filtration element and dust accumulation bin. Note here that the inlet branch pipe is attached aligned with the fan axis. The branch pipe connected with the dust accumulation bin houses a taper-sleeve insert representing a confuser or a diffuser.

EFFECT: higher efficiency and reliability dust separation, lower metal intensity and vibration of unit proper.

6 cl, 5 dwg