| 摘要 |
PURPOSE:To suppress deformation of a heat transfer tube in baking and connecting steps by inserting a tube plate of platelike ceramic unsintered material disposed at an upper end of the tube of ceramic sintered material and one or more tube plates between tube plates positioned at a lower end, and heating to bake them. CONSTITUTION:A heat exchanger is composed by inserting a plurality of heat transfer tubes 2 of ceramic sintered material into through holes of upper and lower tube plates 1 (1a, 1b) of platelike ceramic unsintered material having a plurality of through holes, vertically erecting the tubes 2 on a floor surface, heating to bake them in the state the plates 1 are positioned at both upper and lower ends of the tubes 2, and integrally connecting them by utilizing a difference of baking shrinkages of both the plates 1 and the tubes 2. In such a manufacturing method, an intermediate tube plate 1c is further prepared. The plate 1c is assembled with the tubes 2 in the state that the plate 1c is so positioned that intervals between the upper and lower plates 1 are equal to each other, then, similarly heating to be baked, and integrally connected. |
