JPH0171122U

JPH0171122U -

Info

Publication number: JPH0171122U
Application number: JP16701487U
Authority: JP
Priority date: 1987-10-31
Filing date: 1987-10-31
Publication date: 1989-05-12

Description

[Brief explanation of the drawing]

第１図は本考案に係る消音器の一実施例を示す
縦断面図である。第２図は第１図の消音器の排気
導出管を示す縦断面図である。第３図は第１図の
消音器の排出導出管の分解斜視図である。第４図
は第２図の排気導出管の―線に沿う横断面図
である。第５図は本考案に係る消音器の水抜通路
を外側パイプの凹溝と内側パイプの外周面とで形
成した例を示す横断面図である。第６図は本考案
に係る消音器の水抜パイプを第１拡張室に設けた
状態を示す縦断面図である。第７図は本考案に係
る消音器を排気導出管の上流側を低位置にして配
置した状態を示す縦断面図である。第８図は従来
の消音器を示す縦断面図である。〔主要な部分の符号の説明〕、３１…容器本体
、３３…排気導入管、３５…排気導出管、５３…
内側パイプ、５５…外側パイプ、６１…凝縮水、
６３…水抜パイプ、６７…小孔、６９…出口部、
７１…水抜通路、７３…吸音材。 FIG. 1 is a longitudinal sectional view showing an embodiment of a silencer according to the present invention. FIG. 2 is a longitudinal sectional view showing an exhaust outlet pipe of the silencer shown in FIG. 1. FIG. 3 is an exploded perspective view of the discharge outlet pipe of the muffler of FIG. 1. FIG. 4 is a cross-sectional view of the exhaust outlet pipe of FIG. 2 taken along the line --. FIG. 5 is a cross-sectional view showing an example in which the drain passage of the silencer according to the present invention is formed by the groove of the outer pipe and the outer peripheral surface of the inner pipe. FIG. 6 is a longitudinal cross-sectional view showing the drain pipe of the silencer according to the present invention installed in the first expansion chamber. FIG. 7 is a longitudinal sectional view showing the silencer according to the present invention arranged with the upstream side of the exhaust outlet pipe at a lower position. FIG. 8 is a longitudinal sectional view showing a conventional muffler. [Description of symbols of main parts], 31... Container body, 33... Exhaust inlet pipe, 35... Exhaust outlet pipe, 53...
Inner pipe, 55... Outer pipe, 61... Condensed water,
63... Drain pipe, 67... Small hole, 69... Outlet part,
71... Water drainage passage, 73... Sound absorbing material.

Claims

[Scope of Claim for Utility Model Registration] (1) An exhaust inlet pipe for introducing exhaust gas into the container body and an exhaust outlet pipe for leading out the exhaust gas are provided, and the exhaust outlet pipe is composed of an inner pipe and an outer pipe. In a silencer in which a plurality of small holes are formed in an inner pipe and a sound absorbing material is housed between the inner pipe and the outer pipe where the small holes are located, the inner pipe is provided with the sound absorbing material in the axial direction thereof. A portion in which no small hole is formed is provided, and a water drainage passage is provided between this portion and the outer pipe, and a drainage pipe for sucking condensed water accumulated at the bottom of the container main body is communicated with this drainage passage. A silencer characterized in that an outlet portion of the water drainage passage is opened at a position downstream of the position where the small hole is formed in the inner pipe. (2) The silencer according to claim 1, wherein the drain passage is formed by a concave groove formed in the axial direction on the outer circumference of the inner pipe and the inner circumferential surface of the outer pipe. (3) The silencer according to claim 1, wherein the drain passage is formed by a concave groove formed in the axial direction on the inner circumference of the outer pipe and the outer circumferential surface of the inner pipe.