| 摘要 |
PURPOSE:To assemble the oscillation case with a reduced junction surface by a method wherein a discharge part, a blower part and a side plate are formd into one body in advance by performing a welding work and the like, and a pair of air duct parts are joined together. CONSTITUTION:The discharge part 2 and the blower part 4 are fixed on the side plate 5, whereon vent holes 5a and 5b are provided in advance, using a welding part 6. As a pole brace 7 is attached to the lower left and right sides of the blower part 5, the rigidity of the entire structure is increased. The discharge part 2 and the blower part 4 are hermetically fixed to the side plate 5 in the welded structure form, thereby unnecessitating the use of packings. By having the welded structure as above, the confirmation of position ca be performed easily even when there exists leakage, and also repairs can be performed easily. Also, as the composition of the welded part is unchanged for a long period of time, the degree of its airtightness can be maintained high during the period of subsequent use of the device if there is no initial leakage. |
