Abstract: Provided is an exhaust treatment device including a cylindrical shell into which an exhaust gas is introduced, and a flow channel pipe that penetrates through the cylindrical shell. One end of the flow channel pipe is connected to an exhaust-gas flow path of an internal combustion engine, and the exhaust gas is introduced into the cylindrical shell via the flow channel pipe. A pair of through holes, in which the flow channel pipe is disposed, are provided in a pipe wall of the cylindrical shell. A lid member configured to occlude one of the through holes is welded to the other end of the flow channel pipe so as to occlude an opening in the other end. The lid member is welded to the pipe wall so that the one of the pair of through holes is occluded by the lid member.

Abstract: An exhaust gas purifying device includes a cylindrical shell, a flow channel pipe, and a lid member. The pipe is connected to the shell along a radial direction of the shell. The shell is a member that is formed in a cylindrical shape having a pair of open ends, and in which exhaust gases flow. The shell has at least one shell-side fitting groove that is formed at one of the ends, and in which the pipe is fittable. The lid member is a member that closes the one of the pair of ends of the shell, and has at least one lid-side fitting groove that is formed at a position facing the at least one shell-side fitting groove, and in which the pipe is fittable. The at least one shell-side fitting groove and the at least one lid-side fitting groove fit the pipe therein by holding the pipe therebetween.

Abstract: Provided is an exhaust treatment device including a cylindrical shell into which an exhaust gas is introduced, and a flow channel pipe that penetrates through the cylindrical shell. One end of the flow channel pipe is connected to an exhaust-gas flow path of an internal combustion engine, and the exhaust gas is introduced into the cylindrical shell via the flow channel pipe. A pair of through holes, in which the flow channel pipe is disposed, are provided in a pipe wall of the cylindrical shell. A lid member configured to occlude one of the through holes is welded to the other end of the flow channel pipe so as to occlude an opening in the other end. The lid member is welded to the pipe wall so that the one of the pair of through holes is occluded by the lid member.

Abstract: An exhaust gas purifying device includes a cylindrical shell, a flow channel pipe, and a lid member. The pipe is connected to the shell along a radial direction of the shell. The shell is a member that is formed in a cylindrical shape having a pair of open ends, and in which exhaust gases flow. The shell has at least one shell-side fitting groove that is formed at one of the ends, and in which the pipe is fittable. The lid member is a member that closes the one of the pair of ends of the shell, and has at least one lid-side fitting groove that is formed at a position facing the at least one shell-side fitting groove, and in which the pipe is fittable. The at least one shell-side fitting groove and the at least one lid-side fitting groove fit the pipe therein by holding the pipe therebetween.