JPH04109024A - Exhaust device - Google Patents

Abstract

PURPOSE:To prevent intrusion of rainwater into an exhaust cylinder when an engine is not operated by supporting a lid rotatably on the exhaust cylinder through a hinge, by normally closing an outlet opening of the exhaust cylinder by its own weight and by opening the lid by exhaust gas pressure when the engine is operated. CONSTITUTION:This lid 10 is for blocking an outlet opening 3a of an exhaust cylinder 3 for emitting exhaust gas of a motor which drives an emergency generator and it is supported by a hinge 11 having a long supporting part mounted on a wall surface of an upper end opening 3b of the exhaust cylinder 3 in capable of oscillating, and a balance weight 12 whose weight is set so that it is balanced with exhaust gas pressure blown out from the outlet opening 3a of the exhaust cylinder 3. And a generator is operated at emergency and exhaust gas is blown out form the outlet opening 3a of the exhaust cylinder 3 as shown by the arrow, the lid 10 is opened by the exhaust gas pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an exhaust device for discharging exhaust gas from, for example, a diesel engine.

[Conventional technology]

FIG. 7 is a schematic configuration diagram showing an example of a conventional exhaust system. In the figure, 1 is a prime mover such as a diesel engine that drives an emergency generator (not shown), and this prime mover 1 generates exhaust gas. Become the source.

Reference numeral 2 denotes a muffler that eliminates the exhaust noise of the engine of the prime mover 1, and 3 an exhaust pipe that discharges exhaust gas to the outside via the muffler 2. It points upwards to prevent it from spewing out. Reference numeral 4 denotes a canopy-shaped umbrella provided at the outlet opening 3a of the exhaust [3; this umbrella 4 is attached to the upper end opening 3b of the exhaust pipe 3 by a support 5; is formed.

The umbrella 4 prevents rainwater from entering from the outlet 6 into the outlet opening 3a. Note that 7 is a drain pipe.

Next, the operation will be explained.

When the prime mover 1 operates to drive the emergency generator in an emergency such as a power outage, the exhaust gas from the prime mover 1 is passed through the silencer 2.
The exhaust gas passes through the exhaust pipe 3 and is blown out from the outlet opening 3a, hits the umbrella 4, changes the direction of flow, and is discharged to the outside from the exhaust gas outlet 6.

Furthermore, when the prime mover 1 is operating, the exhaust gas pressure prevents rainwater from entering the exhaust pipe 3.

[Problem to be solved by the invention]

Conventional exhaust systems are configured as described above, so when the emergency generator is running, the prime mover operates and the exhaust gas is discharged to the outside from the exhaust outlet 6, causing rain to flow through the outlet. Although it does not enter the interior through the opening 3a, the prime mover 1 that drives the emergency generator is rarely used, and if it rains or there is a storm while the prime mover 1 is not operating, the exhaust gas outlet 6, there was a problem in that it was necessary to provide a drain pipe 7 in the exhaust pipe 3 because rain would enter the exhaust pipe 3.

Moreover, since the exhaust gas is accompanied by sound, if it hits the umbrella 4 and is reflected, not only will the sound reduction effect due to the directional gain of upward blowing not be obtained, but it will also be guided from below to the exit opening 3a. There was a problem in that the exhaust stack 3 collided with the exhaust gas and caused resonance, so it could not be installed in a place not too far from an adjacent building, and the exhaust stack 3 to which the umbrella 4 was attached spoiled the aesthetic appearance of the city.

This invention was made to solve the above-mentioned problems, and aims to provide an exhaust system that prevents rain from entering and reduces noise exerted on the surroundings.

[Means to solve the problem]

The exhaust device according to the first claim includes an exhaust pipe having an outlet opening facing upward for discharging exhaust gas, and a hinge having a long pivot portion on the exhaust pipe to allow rotation of the exhaust pipe. a lid that closes the outlet opening by its own weight when the exhaust gas is not being discharged, and opens the outlet opening by exhaust gas pressure when the exhaust gas is led to the outlet opening; and an upper end opening when the outlet opening is closed. The lid includes an edge frame portion that is integrally formed with the lid so as to cover the periphery of the lid without a gap, and a cutout portion that is formed in the edge frame portion that is furthest away from the hinge attachment portion of the lid.

The exhaust device according to the second claim includes an exhaust pipe having an outlet opening facing upward for discharging exhaust gas, and a hinge having a long pivot portion on the exhaust pipe to allow rotation of the exhaust pipe. a lid that closes the outlet opening by its own weight when the exhaust gas is not being discharged, and opens the outlet opening by exhaust gas pressure when exhaust gas is led to the outlet opening; and an upper end opening when the outlet opening is closed. an edge frame integrally formed with the lid so as to cover the periphery of the lid without any gaps; a notch formed in the edge frame that is furthest away from the hinge mounting portion of the lid; It is equipped with water shielding plates to prevent rainwater from entering from both sides.

[For production]

The exhaust device according to the first aspect includes a lid rotatably supported by a hinge having a long pivot portion on the exhaust pipe, and a notch integrally formed in the lid so as to cover the periphery of the upper end opening of the exhaust pipe. When the exhaust gas is not being discharged, the lid that closes the exit opening of the exhaust stack does not shift from the exit opening due to its own weight, thus preventing rainwater from entering between the lid and the exit opening. In addition, when the exhaust gas is led out to the outlet opening, the exhaust gas pressure can reliably open the lid, and even if the upwardly facing exhaust pipe is opened by the exhaust gas pressure, the exhaust gas will not be released. The pressure can prevent rainwater from entering.

The exhaust device according to the second claim has an edge frame portion that covers the upper end opening of the exhaust pipe and has a notch integrally formed in the lid, and a water spout plate is attached to the lid, and the outlet opening is directed upward. Even if the exhaust pipe facing toward the front is opened due to exhaust gas pressure, the water shield plate can prevent rainwater from entering, and the lid is rotatably supported on the exhaust pipe by a hinge with a long pivot part. Therefore, the lid that closes the outlet opening due to its own weight when the exhaust gas is not being discharged does not shift from the outlet opening, and therefore rainwater does not enter between the lid and the outlet opening, and the exit opening is closed. When the exhaust gas is discharged, the lid can be reliably opened by the exhaust gas pressure.

[Example〕 An embodiment of the present invention will be described below with reference to the drawings.

Fig. 1 is a front view showing one embodiment of the present invention, Fig. 2 is the same (plan view), and Fig. 3 is the same side view. Components are designated by the same reference numerals and redundant explanations are omitted. In the figure,
Reference numeral 10 denotes a lid in which an edge frame portion 10b is integrally attached to a lid body 10a, and the lid body 10a has an outlet opening 3 of an exhaust pipe 3 for discharging exhaust gas from a prime mover 1 that drives an emergency generator (not shown).
a, and the edge frame portion 10b surrounds the upper end opening 3b of the exhaust pipe 3 without any gap.

A notch 10c is formed in a part of the edge frame 10b so that the lid body 10a can be easily opened and closed.

Reference numeral 11 denotes a hinge having a long pivot portion attached to the wall surface of the upper end opening 3b of the exhaust pipe 3;
It is composed of a long hinge support plate 11a that is attached to the wall of the lid 10, and a hinge support plate 11b that is attached to the edge frame 10b of the lid 10, so that the lid body 10a does not shift with respect to the outlet opening 3a of the exhaust pipe 3. That's what I do. That is, the hinge support plate 11a has bearing portions 11c erected at both ends in the longitudinal direction, and the bearing portion l of the hinge support plate 11b is installed between the bearing portions 11c.
Both bearing portions 11c and the lid are rotatably supported by a shaft lie with the id interposed therebetween.

Moreover, the hinge support plate 11b is attached to the edge frame part 10a of the lid 10 on one side with the bearing part lid in the middle, and has a weight attachment part 11f protruding from the other side, and the edge frame to which the hinge support plate 11b is attached. The cutout portion 10c is formed at a position farthest from the portion 10a. 12 is the weight attachment part 11
This balance weight 12 is set to have a weight that is approximately balanced with the pressure of the exhaust gas ejected from the outlet opening 3a of the exhaust pipe 3.

Next, this operation will be explained.

The lid 10 of this embodiment is a prime mover l that drives an emergency generator.
The exhaust pipe 3 is provided at the outlet opening 3a of the exhaust pipe 3. For this reason, the outlet opening 3a of the exhaust stack 3 is always closed and rainwater does not enter the exhaust stack 3, but the lid 10 is usually made of a metal such as aluminum that does not corrode, so it is lightweight. There is a risk that it may float away due to wind, etc. For this reason, the edge frame 10b is integrally attached to the lid body 10a with no gap between it and the periphery of the wall surface of the exhaust pipe 3, and when the lid body 10a is opened, the edge frame 10b is attached to the upper end opening 3b.
The notch portion 10c is formed so as not to collide with the.

Further, in an emergency, the exhaust gas from the prime mover 1 is blown out from the outlet opening 3a of the exhaust pipe 3 as shown by the arrow in FIG. 1, so that the lid 10 is opened by the exhaust gas pressure. In this case, since the notch 10c is formed in the lid 10, the exhaust gas will first blow out from the notch 10c without the edge frame 10b, and the lid 10 will be wide open and the exhaust gas will be blown upward. This provides a sound reduction effect due to directional gain.

Next, other embodiments will be explained with reference to FIGS. 4 to 6.

In this embodiment, the exhaust stack 3 of the prime mover 1 that drives the regular generator is used.
This lid 13 is attached to a lid body 13a, an edge frame portion 13b having a cutout portion 13c, and both left and right sides of the lid body L3a outside this edge frame portion 13b, and the lid 13 is attached to It is composed of a water shield plate 13d that prevents rainwater from entering when opened. In addition, the above lid 1
A balance weight 12 is directly attached to the lid main body 13a of No. 3, and one side of a hinge support plate Ilb is fixed to the edge frame portion. Reference numeral 14 denotes a through hole drilled in the lid body 13a to prevent the lid body 13a from being flipped open by wind when the motor 1 is not operating.

Since the lid 13 is attached to the exhaust stack 3 of the prime mover 1 that drives the regular generator, the lid 13 is normally opened due to the pressure of the exhaust gas, and the exhaust gas flows as shown by the arrow in FIG. It flows from the outlet opening 3a of the exhaust pipe 3 toward the notch 13c. Although the lid 13 is always open in this way, the water plate 13d prevents rain from entering the exhaust pipe 3, so there is no need to provide a drain pipe in the exhaust pipe 3.

Furthermore, since the lid body 13a is formed with the through hole 14, the lid body 13a will not be turned over by wind when the motor 1 is not in use.

〔Effect of the invention〕

As described above, according to the invention in the first claim, the lid is rotatably supported by a hinge having a long pivot portion on the exhaust pipe, and the lid is attached so as to cover the periphery of the upper end opening of the exhaust pipe. An edge frame portion having a notch is formed integrally with the exhaust pipe, and when the exhaust gas is not being discharged, the lid closes the exit opening of the exhaust pipe by its own weight without shifting, and when the exhaust gas is led out to the exit opening. Since the lid is reliably opened by exhaust gas pressure, rainwater will not enter between the lid and the outlet opening when the lid is closed, and even if the outlet opening is opened facing upward. The exhaust gas pressure can prevent rainwater from entering, so there is no need for a drain pipe, and the effect is that it is possible to reduce noise exerted on the surroundings.

Further, according to the invention in the second claim, the lid is rotatably supported by a hinge having a long pivot portion on the exhaust pipe, and the cover is integrally attached to the lid by covering the periphery of the upper end opening of the exhaust pipe. Since the edge frame has a notch and the water plate is attached to the lid, even if the exhaust pipe with the outlet opening facing upward is opened due to exhaust gas pressure, the water shield plate prevents rainwater from entering. In addition, the lid that closes the outlet opening due to its own weight when the exhaust gas is not being discharged does not shift from the outlet opening, and therefore rainwater does not enter between the lid and the outlet opening. When the exhaust gas is led out to the outlet opening, the lid can be reliably opened by the pressure of the exhaust gas, and there is an effect that a drain pipe is not required and the noise exerted on the surroundings can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an exhaust system according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a side view of FIG. 1, and FIG. The front view showing the exhaust system according to the embodiment of FIG. 5 is the same (the plan view of FIG. 4,
FIG. 6 is a side view of FIG. 4, and FIG. 7 is a schematic diagram showing an example of a conventional exhaust system. 3... Exhaust tube, 3a... Exit opening, 3b... Upper end opening, 10.13... Lid, 10a, 13a-lid body, 10b, 13b... Edge frame portion, lOc, 13cm Notch portion, 11...hinge, 13d...water supply plate, and the same reference numerals in the drawings indicate the same or equivalent parts. Figure Figure 10a: IL real melon diagram, erotic opening diagram

Claims (2)

[Claims] (1) The exhaust pipe has an outlet opening facing upward to discharge exhaust gas, and the exhaust pipe is rotatably supported via a hinge with a long pivot part, so that the exhaust gas is not discharged. A lid that closes the outlet opening due to its own weight and opens the outlet opening due to exhaust gas pressure during use when the exhaust gas is led out to the outlet opening; An exhaust device comprising an edge frame integrally formed with the lid so as to surround the periphery without a gap, and a notch formed in the edge frame that is furthest away from the hinge attachment portion of the lid. (2) The exhaust pipe has an outlet opening facing upward to discharge exhaust gas, and the exhaust pipe is rotatably supported via a hinge with a long pivot part, so that the exhaust gas is not discharged. A lid that sometimes closes the outlet opening by its own weight and opens the outlet opening by exhaust gas pressure when exhaust gas is led to the outlet opening, and a lid that closes the upper end opening of the exhaust pipe when the outlet opening is blocked. A rim frame integrally formed with the lid so as to surround the periphery without a gap, a notch formed in the rim frame that is furthest away from the hinge attachment part of the lid, and a cutout of the lid when the outlet opening is opened. An exhaust system equipped with a water shield plate that prevents rainwater from entering from both the left and right sides.