| 摘要 |
PURPOSE:To prevent the deformation of the whole of the flat plate due to thermal stress by a method wherein a plurality of pieces of flat plate, having surface smoothness available for practical use, are connected in parallel to make a block as a flat plate constituting unit and the flat plates, having arbitrary areas, are connected so that the difference of contraction can be absorbed freely. CONSTITUTION:A pipeline 20, in which one ends of two rows of hollow holes 5a, 5a are connected by a bend 6 to form an U-shape pipeline and the other ends thereof are connected to the neighboring flat plate pieces 2c through bends 6', are formed on the flat plate piece 2c. The temperature of heat medium (refrigerant) flowing through the pipeline 20 is changed gradually by heat exchange effected on the surfaces of the flat plate pieces 2c, 2c. However, the flat plate pieces are divided so that the thermal stresses due to the temperature change caused on the flat plate pieces are in such degrees that the smoothness of the flat plates are available for the practical use substantially, therefore, there is no problem. Sliding pieces 8 are inserted into long holes 7 provided on the flanges 3, 3 of the flat plate pieces, which are contacting mutually in surface contacts, therefore, the difference of the expansion (or contraction) in the longitudinal directions of the flat plate pieces 2c, 2c may be absorbed freely by each others. |
