TUNNEL KILN-DRYER Russian patent published in 2016 - IPC F27B9/00 

FIELD: heating.

SUBSTANCE: claimed dryer comprises the working channel arbitrarily divided into the zones of drying treatment, annealing and cooling. There blower for bleeding of flue gases and heat carrier from cooling zone and heat carrier from drying zone start. There are the blower to feed atmospheric air to the cooling zone end and the blower to bleed heated air from cooling air zone. Drying zone venting system is composed of the set of unified units composed by pressure blower, atmospheric air suction piles and pipe to feed air from the cooling zone. Note here that said units are arranged over the length of drying zone. Besides, there is the heating system. Swivel flap is arranged in the pipe upstream of flue gas bleed blower actuated by the motor with step-down gearing at 3-7 rpm to vary intermittently the rarefaction in annealing and treatment zones at the frequency of oscillations of 6-14 with amplitude of 10-20 Pa. This is done for intermittent variation of threshold rarefaction at every points of wall parts located in annealing and treatment zones.

EFFECT: high-intensity gas exchange between gas floors in said zones and pores of ceramic wall articles in said furnace.

3 dwg