| 摘要 |
PURPOSE:To facilitate the assembly of the titled inner cylinder units of simple structure and to prevent a gas leak and the corrosion of the units by a method wherein a double pipe-like receiving section is provided at the upper end, and a bell type pipe insert section is provided at the other end, of each of the inner cylinder units. CONSTITUTION:Each of inner cylinder units 12 is formed to have the double pipe-like receiving section 11 on one end and the single stepped bell type pipe insert section 13 on the other end thereof. In case the units 12 are connected to one another, an adhesive 18 is put into the double pipe-like receiving section 11 of the unit 12 shown below and the single stepped bell type pipe insert section 13 of another unit 12 shown above is inserted into the receiving section 11 of the former unit. |
