F - Mech Eng,Light,Heat,Weapons – 23 – J
Patent
F - Mech Eng,Light,Heat,Weapons
23
J
25/88, 110/96
F23J 11/00 (2006.01) E04F 17/02 (2006.01) F27B 13/06 (2006.01)
Patent
CA 1051639
ABSTRACT OF THE INVENTION The present invention relates to baking pit furnaces and more especially to the flues of such furnaces, and is characterised in that the flues are cast in several inter- related parts in refractory concrete and are assembled from the cast parts. The concrete parts are preferably compacted by inducing small vibrations at high frequency to parts of the moulds in which they are cast. Moreover, flues assembled from the cast parts preferably include baffles extending between the side walls thereof midway of their lengths, and means tying said side walls together over each length thereof defined between the control baffle and each of the two end walls of the flue. The central baffles may be rooted in the bottom walls of the flues, and all corners and free baffle edges are preferably rounded. Directional vanes may be associated with the free baffle edges, each of said vanes being of arcuate cross-sectional shape and extending between the side walls of the flue at some spacing from the associated free baffle edge.
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