초록 ▼

A merging pipe wherein branch pipes can be easily welded to each other in a joint portion even when an intersect angle .alpha. between axes of both the branch pipes is set to a small value to reduce merging resistance. In the merging pipe, a plurality of branch pipes are obliquely arranged and bent

A merging pipe wherein branch pipes can be easily welded to each other in a joint portion even when an intersect angle .alpha. between axes of both the branch pipes is set to a small value to reduce merging resistance. In the merging pipe, a plurality of branch pipes are obliquely arranged and bent at their joined ends to extend in the axial direction downstream of confluence. Circumferential walls of the branch pipes adjacent to each other at the joined ends are formed into abutting walls held in close contact relation. Flange walls are formed between the abutting walls and circumferential walls of the branch pipes. The branch pipes are joined together at the abutting walls along their outer peripheral edges.

대표청구항 ▼

[ What is claimed is:] [1.] A merging pipe in which a plurality of branch pipes are obliquely arranged and bent at their joined ends to extend in the axial direction downstream of confluence, including abutting walls formed as part of said branch pipes, and said abutting walls of said branch pipes h

[ What is claimed is:] [1.] A merging pipe in which a plurality of branch pipes are obliquely arranged and bent at their joined ends to extend in the axial direction downstream of confluence, including abutting walls formed as part of said branch pipes, and said abutting walls of said branch pipes held in close contact relation are joined to each other,wherein said merging pipe includes flange walls formed as part of said branch pipes continuously between said abutting walls and circumferential walls of said branch pipes, andwherein, at at least a crotch portion of the joined portion of said merging pipe, a portion of each of said flange walls is projected outwardly from an outer peripheral surface of each respective branch pipe, and both said projected portions of the flange walls are mated with each other.