JPS6322322U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of a water draining device for an exhaust system muffler according to an embodiment of the present invention, FIG. 2 is a partial sectional view taken along the line - - in FIG. FIG. 4 is a perspective view showing a water drain pipe used in a water draining device for an exhaust system silencer according to an embodiment; FIG. 4 is a schematic diagram showing the inside of a silencer used in an embodiment of the present invention; FIG. , A diagram showing how the pressure in each expansion chamber of the muffler changes depending on the engine speed, Figure 6 is a diagram explaining the flow around the drain pipe, and Figure 7 is FIG. 8, which is a diagram showing the Karman vortex generated from the water drain pipe, is a characteristic diagram showing the relationship between the engine speed and the amount of water discharged, comparing the water draining device of this embodiment with a conventional device. 1... Silencer, 2... Container, 3, 4, 5, 6...
... Expansion chamber, 7, 8, 9 ... Partition plate, 10 ... Inlet pipe, 11 ... Outlet pipe, 1
6... Drain pipe, 17, 18... Through hole.

Claims (1)

[Scope of utility model registration request] A drain pipe having a through hole on its outer circumferential surface protrudes inside a pipe that penetrates a plurality of expansion chambers partitioned inside the container so as to be able to communicate with each other and releases exhaust gas to the outside. In a water draining device for an exhaust system muffler that opens inward and sucks water accumulated in the container into the pipe, the through hole is set in a direction perpendicular to the direction of the exhaust gas flow passing through the pipe, and . A water draining device for an exhaust system silencer, characterized in that, outside the pipe, an open end of the draining pipe is defined on a lower wall surface of the expansion chamber where water tends to accumulate.