GB159933A - Improvements relating to ice-making apparatus - Google Patents

Abstract

159,933. Steer, J. C., and Hale, H. J. Nov. 10, 1919. Ice-making; plate apparatus.-Relates to plate apparatus for the direct expansion system and consists in building the " plates " from superposed lengths of channel, U, T, H and similar section bars welded together along their edges so as to form a continuous tortuous passage for the refrigerant. Fig. 1 shows U-section bars 1 welded along the edges 3 to the crowns of adjacent bars, the crowns being cut away at alternate ends to provide communicating openings. Fig. 2 shows an arrangement for H-section bars. Channel bars may be placed crown to crown, as shown in Fig. 6. One side may be formed by a complete plate to which angle bars are welded to form the partitions and the opposite side; or, as shown in Fig. 8, flat plates 23 may be welded to a ribbed plate 19. A continuous zig-zag plate 25, Fig. 9, may be employed. Channel members of sheet metal may be used, as shown in Fig. 12, reinforcing-ribs 34 being welded on to the walls. Channel bars may be interfitted, as shown in Fig. 12a. The refrigerant may be supplied to one end of the bottom passage by an inside pipe passing with a tight fit through alternate partitions, or by an external pipe.