JPS5913295Y2 - Upright exhaust pipe moisture removal device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a moisture removal device for an upright exhaust pipe mounted on a construction machine or an industrial machine.

Generally, an upright exhaust pipe of a construction machine or the like has a moisture removal device therein to prevent rainwater or moisture generated by combustion of gasoline or the like, that is, condensed water, from entering the engine side.

However, this water removal device does not remove water sufficiently, and since the exhaust pipe is opened at a high position at the discharge end of the exhaust gas, water containing carbon may sometimes be discharged from the exhaust pipe when the engine is started. It may spill out from the end opening and stain the machine itself and the operator's clothing.

If such a situation were to be prevented and an exhaust pipe capable of completely removing moisture was used, the structure would be complicated and the cost of the device itself would be high.

The present invention eliminates the drawbacks of the conventional ones mentioned above,
This device was developed for the purpose of providing a moisture removal device for an upright exhaust pipe that ensures moisture removal with a simple configuration. a hood with a plurality of exhaust ports formed on an outer circumferential wall thereof, a saucer interposed above the exhaust ports between the hood and the exhaust pipe, and a pipe extending from above the lower wall of the hood to the outer periphery of the exhaust pipe. The vehicle is provided with a moisture absorber arranged in a shape, a conduit for guiding water droplets from the saucer to the moisture absorber, and another conduit for guiding water droplets on the lower wall of the hood to the lower part of the vehicle body. It is.

The present invention will be explained below with reference to embodiments shown in the drawings.

The upright exhaust pipe 1 is located at the end of an exhaust system that collects exhaust gas from an engine through an exhaust manifold and releases it into the atmosphere, and has an opening 2 at its upper end.

The upper end of the exhaust pipe 1 including the opening 2 is covered with a hood 3.

This hood 3 has a considerably larger outer diameter than the exhaust pipe 1, and includes a deep dish-shaped lower half 4 fitted into the exhaust pipe 1, and a plurality of L-shaped parts on the upper edge of the lower half 4. A plurality of pins 7 fitted into grooves 6 are implanted in the lower end of a peripheral wall 8, and the upper half 5 is detachably attached to the lower half 4.

A plurality of exhaust ports 9 are formed in the circumferential wall 8 of the upper half 5 at intervals in the circumferential direction, and the top wall 10 of the upper half 5 is connected to the upper end opening 2 of the exhaust pipe 1. It is said to have a conical shape separated by intervals.

An annular chamber 11 is formed on the outer periphery of the exhaust pipe 1 between the hood 3 and an annular saucer 12.
is interposed above the exhaust port 9, and this saucer 1
An annular opening 13 is formed between the exhaust pipe 1 and the exhaust pipe 1 .

Further, a moisture absorber 15 is disposed in a cylindrical shape from the lower wall 14 of the hood 3 to the outer periphery of the exhaust pipe 1, and this moisture absorber 15 is in contact with the exhaust pipe 1 over a considerable area.

The moisture absorber 15 is made of a glass fiber knitted body, for example, and a cylindrical body 16 having a protrusion 17 for supporting the moisture absorber 15 is attached to the outer periphery of the moisture absorber 15.

A plurality of conduits 18 are attached to the saucer 12, and these conduits 18 reach a position directly above the moisture absorber 15 on the lower wall 14 of the hood 3.

Further, a conduit 19 is attached to the lower wall 14 of the hood 3 to guide water droplets to the lower side of the vehicle body.

Next, the action will be explained.

Moisture (water vapor) generated by combustion of fuel in the engine is discharged from the opening 2 of the exhaust pipe 1 together with the exhaust gas and collides with the top wall 10 of the hood 3, but this top wall 10 is always cooled by the outside air. Therefore, the moisture in the exhaust gas condenses, and due to its own weight and the flow of the exhaust gas, the water in the exhaust gas is
from above, and flows down the conduit 18 from here to the moisture absorber 1.
It gets sucked into 5.

After that, the moisture gradually absorbs into the moisture absorber 15 due to capillary action.
The exhaust gas rises inside the exhaust pipe 1, is heated and vaporized in contact with the exhaust pipe 1, and is discharged into the atmosphere from the exhaust port 9 together with the exhaust gas that has passed through the opening 13.

Note that the condensation of moisture in the exhaust gas begins when the engine is started and continues until the exhaust pipe 1 and the hood 3 are sufficiently heated.

In addition, when the amount of water dripping into the saucer 12 is large, the water reaches the bottom wall 14 of the hood 3 from above the conduit 18, and is then guided directly below the vehicle body via the conduit 19, and is placed at a predetermined harmless location. It is discharged.

In this way, the moisture in the exhaust gas is always discharged from the hood 3 regardless of its amount, so there is no possibility of spewing out dirty water.

On the other hand, when the amount of rainwater that has entered the hood 3 through the exhaust port 9 is large, it is treated through the conduit 19, and when it is a small amount, it is sucked into the moisture absorber 15, vaporized, and discharged together with the exhaust gas. Therefore, in any case, it will not be adversely affected by rainwater.

Note that the rainwater that has entered the hood 3 through the exhaust port 9 plays the role of cleaning carbon particles adhering to the hood 3.

As explained above, the moisture removal device for an upright exhaust pipe according to the present invention has a plurality of exhaust ports formed in the outer circumferential wall surrounding the upper end including the upper end opening of the upright exhaust pipe having an upper end opening. a hood disposed above the exhaust port between the hood and the exhaust pipe; a moisture absorber disposed in a cylindrical shape around the outer periphery of the exhaust pipe from above the lower wall of the hood; Despite its simple configuration, it has a conduit that guides water droplets from the saucer to the moisture absorber and another conduit that guides water droplets on the lower wall of the hood to the lower part of the vehicle body.
The rainwater and the moisture in the exhaust gas are well discharged, and the excellent effect is that there is no possibility that the driver or the like will be adversely affected by these moisture.

[Brief explanation of drawings]

FIG. 1 is a half longitudinal sectional front view showing an embodiment of the moisture removal device for an upright exhaust pipe according to the present invention, and FIG. 2 is a cross sectional view of FIG. 1. 1...exhaust pipe, 3...hood, 9...
...Exhaust port, 12...Saucer, 15...
...Moisture absorber, 18.19... Conduit.

Claims (1)

[Claims for Utility Model Registration] ■ A hood with a plurality of exhaust ports formed on the outer circumferential wall that covers the upper end of an upright exhaust pipe having an upper end opening, including the upper end opening, and this hood and the exhaust pipe. a saucer interposed above the exhaust port between the hoods, and a moisture absorber disposed in a cylindrical shape around the outer periphery of the exhaust pipe from above the lower wall of the hood;
A moisture removal device for an upright exhaust pipe, comprising a conduit for guiding water droplets from the saucer to the moisture absorber and another conduit for guiding water droplets on the lower wall of the hood to a lower part of the vehicle body. 2. The moisture removal device according to claim 1, wherein the moisture absorber is made of a glass fiber braided body. 3. The water removal device according to claim 1 or 2, wherein the upper and lower parts of the hood are detachable.