DEVICE FOR TRAPPING DUST Russian patent published in 2007 - IPC B04C9/00 

FIELD: dust trapping.

SUBSTANCE: device comprises housing, peripheral gas flow inlet, filtering member, and hopper for collecting dust. The peripheral gas flow inlet lies in the central part of the device and is made of a double cyclonic member with the scroll-like housing. The cyclonic member receives the fan whose axis is in coincidence with the axis of the inlet branch pipe. The axes of at least two axially aligned branch pipes are arranged to the right and to the left of the inlet branch pipe symmetrically with respect to its horizontal axis with the shift e upward and downward and symmetrically with respect to its vertical axis with the shift f. The top branch pipe is provided with filtering member, and the bottom branch pipe is provided with the hopper for collecting dust. The ratio of shift e of the axis of branch pipes with respect to the horizontal axis of the fan to the shift f of the axis of branch pipes with respect to the vertical axis of the fan ranges from 0.1 to 0.5.

EFFECT: enhanced efficiency and reliability.

2 cl, 7 dwg