F - Mech Eng,Light,Heat,Weapons – 26 – B
Patent
F - Mech Eng,Light,Heat,Weapons
26
B
34/23
F26B 3/24 (2006.01) F26B 13/18 (2006.01) F26B 23/10 (2006.01) F28F 5/02 (2006.01)
Patent
CA 1042658
ABSTRACT OF THE DISCLOSURE An apparatus having a substantially uniformly heated surface is provided for heat exchange purposes, such as use in the printing of textile web materials. The apparatus comprises concentric inner and outer shells defining an annular flow space therebetween. Closing means connect the opposite ends of the inner and outer shells. Longitudinally-extending portions extending between the inner and outer shells and form a plurality of longitudinally- extending compartments within the flow space. Longitudinally- extending baffles extend between the inner and outer shells for a portion of the length of the compartments, so that an approximately U-shaped flow path is formed within each of the compartments, such approximately U-shaped flow paths each including only two legs consisting of an entrance leg and an exit leg, the legs being circumferentially arranged with respect to each other. Feed means are provided for supplying a heat-transfer fluid to the entrance leg of each of said approximately U-shaped flow paths. Return means are provided for withdrawing a heat-transfer fluid from the exit leg of such approximately U-shaped flow paths. A centrally- disposed concentric feed passage is adapted to be connected to a source of heat transfer fluid, the central feed passage communicating with the feed means and the return means. The return means includes an annular return plenum disposed beneath the inner shell, which communicates with the exit legs of said approximately U-shaped flow paths, and at least one radially-extending return channel which communicates with the central feed passage and with the annular return plenum for removing heat-transfer fluid from said annular return plenum. This provides a drum of simple construction which enable improved uniformity of heating materials.
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