JPH0550025U - Vertical exhaust pipe rainwater separator - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a rainwater separator in a vertical exhaust pipe that does not allow rainwater to infiltrate, diffuses exhaust gas, and does not increase exhaust pressure. [Structure] A plurality of substantially fan-shaped cut-out plates 2a, 2b, 2c, 2d are separated from each other so that the exhaust wall of the exhaust pipe 1 can block the pipe when viewed from a plane and can have a spiral exhaust gas flow when viewed from a side section. In addition, the drainage holes 3 are provided in the groove bottom pipe wall of each partition plate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rainwater separator for a vertical exhaust pipe of a vehicle.

[0002]

[Prior art and its problems]

 For example, some vehicles such as trucks have a so-called vertical exhaust pipe having a structure in which the exhaust pipe is planted toward the sky. Among such vertical exhaust pipes, the straight pipe type has a problem that rainwater directly enters the exhaust pipe, and the exhaust gas is discharged in an upward direction. There is a problem of being sprayed.

Further, in a vertical exhaust pipe, when a rainwater shield is provided at the tip of the exhaust pipe, many of them have a structure in which the outlet end of the exhaust pipe is closed and a hole is formed while blocking rainwater. Therefore, there is a problem that the exhaust pressure increases.

In view of the above problems, it is an object of the present invention to provide a rainwater separator for a vertical exhaust pipe that does not infiltrate rainwater and is not blown to exhaust gas and has a small exhaust pressure.

[0005]

[Means for Solving the Problems]

 According to the present invention, which achieves the above-mentioned object, a plurality of siding plates which are substantially fan-shaped in a plane and are curved in a groove shape between both lines are provided on the outlet side of the exhaust pipe. The exhaust gas hits the groove pressure part of the cut-out plate by displacing it toward the pipe axial direction and shifting it in the circumferential direction so as to block the exhaust pipe with the plurality of sheets and tightly fixing the outer peripheral arc-shaped part inside the pipe wall. The water drainage hole is formed in the pipe wall of the pipe.

[0006]

[Action]

 Due to the presence of the plurality of divider plates, rainwater that enters the exhaust pipe is received and flows into the groove portion and then flows out through the drain hole. Further, since the partition plates are attached to each other only in the circumferential direction in the axial direction, exhaust gas is spirally swirled and is discharged and diffused to the outside. In addition, since the divider plate is provided separately in the axial direction of the pipe, the rise in exhaust pressure is small.

[0007]

【Example】

 An embodiment of the present invention will now be described with reference to FIGS. FIG. 3 shows the vertical exhaust pipe 1, showing the plane of the vehicle. That is, the exhaust gas of the engine E in the cab is guided to the exhaust pipe via the exhaust manifold, and is exhausted from the vertical exhaust pipe 1 in the upright state via the muffler M.

Here, the outlet end of the vertical exhaust pipe 1 has the structure shown in FIG. In FIG. 1, the inner pipe wall of the exhaust pipe 1 is fixed with substantially fan-shaped cut-off plates 2a, 2b, 2c, 2d shown in FIGS. 2 (a) and 2 (b). The cut-off plates 2a, 2b, 2c, 2d are, for example, substantially fan-shaped plates with an opening angle of about 100 °, and a groove bent along these side lines is formed in the central portion between both side lines 21 of the fan. Has been done. And, rainwater is collected by this groove.

The partition plates 2a, 2b, 2c, 2d are attached to the inner wall of the exhaust pipe in an evenly spaced manner so as to partially overlap with each other when seen in a plane as shown in FIG. The cutout plates 2a, 2b, 2c, 2d are arranged so that the exhaust pipe outlet end is closed. Moreover, the partition plates 2a, 2b, 2c, 2d are attached to the pipe wall while being spaced apart in order along the pipe axis direction. Therefore, the exhaust gas is interrupted in the order of the partition plates 2d, 2c, 2b, 2a, and is discharged as a spiral flow.

The partition plates 2a, 2b, 2c, 2d have a fan-shaped outer peripheral portion tightly fixed to the pipe wall of the exhaust pipe 1, and a drain hole 3 is formed in the pipe wall corresponding to the groove bottom of the partition plate. There is.

With the above-described structure, even if rainwater enters the exhaust pipe 1 from above, it is captured by the threshold plates 2a, 2b, 2c, 2d and discharged from the drain hole 3 to the outside. On the other hand, the exhaust gas spirally rises between the limit plates and is discharged. However, since this exhaust gas becomes a vortex and is discharged from the exhaust pipe 1, the spray of exhaust gas collected is alleviated. Further, by sufficiently separating the partition plates, it is possible to prevent an extreme increase in exhaust pressure. It should be noted that the flow of the exhaust gas sucks the outside air from the water drainage hole 3 to dilute the exhaust gas as much as possible. Further, the grooves of the partition plates 2a, 2b, 2c, 2d do not have the fan-shaped central portions formed symmetrically, but can be made asymmetric so that the flow of exhaust gas becomes a spiral flow easily.

[0012]

[Effect of the device]

 As described above, according to the present invention, it is possible to obtain a vertical exhaust pipe having a simple structure in which rainwater does not easily enter the exhaust pipe, exhaust gas can sufficiently diffuse, and exhaust pressure does not increase.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment.

FIG. 2A is a plan view, and FIG. 2B is a configuration diagram of a cut-off plate and a drainage hole.

FIG. 3 is an overall simplified configuration diagram.

[Explanation of symbols]

 1 Exhaust pipe 2a, 2b, 2c, 2d Threshold plate 3 Drain hole 21 Side line

Claims (1)

[Scope of utility model registration request] 1. A plurality of siding plates which are substantially fan-shaped in a plane and are curved in a groove shape along the lateral line between both sides, and the groove-shaped curved portion faces the outlet side of the exhaust pipe and is in the pipe axial direction. The outer peripheral arcuate portion is tightly fixed inside the pipe wall by shifting it in the circumferential direction so as to block the exhaust pipe with the plurality of sheets, and the water on the pipe wall of the exhaust pipe that hits the groove pressure portion of the cut-off plate. A rainwater separator for a vertical exhaust pipe, characterized in that a hole is formed.