| 摘要 |
PURPOSE:To prevent the levitation of an indoor unit from a wall by expanding the inner diameter of a piping sleeve from that side toward this side of the same. CONSTITUTION:The inner diameter of a piping sleeve 30 is expanded gradually from the opening 34 of other side toward the opening 33 of one end side and the configuration of the piping sleeve 30 is provided with an eccentric different diameters, whose centers are deviated. The side line S of the sleeve 30, which is formed in the bending direction of a pipeline, is provided with a curved line and the opening 33 of one end side is projected outwardly than the opening 34 of the other end side. When the pipeline is bent at the opening 33 of one end side of the sleeve 30, the inner diameter of the sleeve 30 is expanded from the opening 34 of the other end side toward the opening 33 of one end side in such a manner whereby the radius of curvature of the pipeline can be designed so as to be large. Accordingly, the pipeline will never be projected toward a direction separated from a wall when the pipeline is bent. According to this method, the levitation of an indoor unit from the wall can be prevented. |
