GB339869A - Improvements in surface apparatus for heating or cooling liquids - Google Patents

Abstract

339,869. Morton & Co., Ltd., R., and Robinson, P. Feb. 7, 1930. Straight tubes between headers. -In surface apparatus consisting of units having a tubular casing 1 containing pipes 7, one fluid passing through the pipes and the other through the casing, and one or both fluids passing back and forth in the casing a number of times, the inner fluids flow back and forth in the unit in a sinuous path comprising a number of tubes connected in series so that the fluid flows in a single stream. the tubes being mounted in tube blocks 4 and 5 provided with passages directing the flow of the outer liquid over the tubes. The ends of the unit are provided with caps 6 containing recesses 20 - - 23 which connect up the tubes 7 in series so that the inner liquid flows as indicated by the arrows in Fig. 12. Tho caps are carried by arms 25 hinged by a pin 26 to arms 27 carried by the casing and are pressed against the headers by a screw 30<a> working in a bridge piece 28 attached by pins 26 and 29 to arms 27 and 30 on the casing. Ribs 18 on the tube blocks 4 and 5 fit into grooves 19 in the caps which are readily withdrawn to facilitate cleaning. The tube blocks themselves may contain the passages for connecting the tubes 7 in series in which case they are held in position by similar means to the caps. The casing 1 screws at each end into headers 2 and 3 provided with ports 32 for the outer fluid which contain the tube blocks 4 and 5. Keys 35, Fig. 9, prevent relative rotation between the blocks and headers. The tube blocks are provided with partitions 13, 13<a>, and 13<b> to which radial partitions extending along the casing are attached, the tubes 7 being carried by bridge pieces attached to these partitions. The radial partitions in conjunction with the partitions in the blocks cause the outer liquid to follow a sinuous path back and forth in the casing as described in Specification 339,870.