FANNING DEVICE FOR MAIN VENTING Russian patent published in 2004 - IPC

FIELD: mining industry.

SUBSTANCE: device has several(more than two) centrifugal fans placed on two sides of forcing and sucking channels connected to diagonally placed apertures in square wall of vertical reversible box, with folding door along horizontal axis. Apertures connecting shaft and atmosphere with reversible box are formed in surfaces of diagonally opposite volumes of reversible box respectively under aperture of inlet aperture of upper channel and above aperture of lower channel.

EFFECT: compactness of device, free access to fans and possible use of fanning device in both sucking and forcing variants without additional constructive changes.

3 cl, 6 dwg