JPH0738631U - Rainproof structure of the exhaust duct - Google Patents

Abstract

(57) [Abstract] [Purpose] To propose a rainproof structure for the exhaust duct that prevents rainwater from entering the inside of the power generator and thus does not adversely affect the internal engine and generator. [Configuration] This power generator has an intake port and an exhaust port 1 on a wall surface 7.
An engine and a generator are housed in an outer box 2 provided with a fan, and a fan is attached, and an exhaust duct 12 is connected to an exhaust port 1 of the outer box 2. Further, the rainproof structure of the air exhaust duct 12 is provided on the air exhaust duct 12 that is provided so as to project outward from the exhaust port 1 and has an open upper surface 13, and on the open upper surface 13 of the air exhaust duct 12. The top louver 14,
Side louvers 16 provided on the connecting surface 15 with the exhaust port 1
And. Therefore, the rainwater that has fallen on the upper surface 13 of the exhaust duct 12 is first of all the louver pieces 1 of the upper surface louver 14.
It is removed by hitting 7 and the rest is hit by each louver piece 18 of the side louver 16 and removed, so that rainwater is surely prevented from entering from the exhaust port 1 into the inside of the outer box 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rainproof structure for an exhaust duct. That is, it relates to the rainproof structure of the exhaust duct in the power generator in which the engine and the generator are housed.

[0002]

[Prior art]

 FIG. 2 is a front cross-sectional explanatory view of an exhaust duct of this type of conventional example, FIG. 1 (1) shows one example thereof, and FIG. 2 (2) shows another example. For stationary private power generators and emergency power generators, an engine and a generator are housed and a fan is installed in an outer box 2 that has an intake port and an exhaust port 1 on the wall. . Exhaust ducts 3 and 4 projecting outward are connected to the exhaust port 1. In the conventional exhaust duct 3 shown in FIG. 2A, the lower surface 5 is open. In the conventional exhaust duct 4 shown in FIG. 2 (2), the upper surface 6 is open.

[0003]

[Problems to be solved by the device]

 By the way, in such a conventional example, the following problems have been pointed out. First, in the exhaust duct 3 of FIG. 2 (1), since the air is exhausted downward through the open lower surface 5, it has been pointed out that noise is easily transmitted to the outside. Next, in the exhaust duct 4 shown in Fig. 2 (2), rainwater enters the outer box 2 through the exhaust port 1 through the upper surface 6 where the rainwater is released, so that the engine and the generator inside the power generation device are introduced. There was a problem in that it could adversely affect

In view of the above situation, the present invention has been made to solve the problems of the above-described conventional example, and the upper surface louver and the side surface are respectively provided on the open upper surface and the connecting surface with the exhaust port. The purpose of the present invention is to propose a rainproof structure for an exhaust duct that prevents rainwater from entering inside by providing a louver.

[0005]

[Means for Solving the Problems] The technical means of the present invention for achieving this object are as follows. In other words, this rainproof structure has a structure in which an engine and a generator are housed and a fan is installed in an outer box that has an intake port and an exhaust port on the wall surface. This relates to the rainproof structure of the exhaust ducts connected to each other. The exhaust duct is provided so as to project from the exhaust port of the outer box to the outside and has an open upper surface, and the exhaust duct is provided on the connection surface between the open upper surface of the exhaust duct and the exhaust port. And a top louver and a side louver.

[0006]

[Action]

 Since the present invention comprises such means, it operates as follows. In this power generator, when the fan is driven to rotate, air is taken in from the intake port, cools the generator and engine, and then is exhausted to the outside from the exhaust port through the side louvers and top louvers of the exhaust duct. To be done. Now, according to the rainproof structure of this exhaust duct, the rainwater that has fallen on the upper surface of the exhaust duct is first removed by the upper surface louvers and cannot pass through it as it is. The remaining part that passes through the louver cannot be passed through because it is removed by the side louver on the connecting surface. In this way, rainwater is reliably prevented from entering through the exhaust port.

[0007]

【Example】

 The present invention will be described in detail below based on the embodiments shown in the drawings. FIG. 1 is a front sectional view showing an embodiment of the present invention, and FIG. 3 is a front view of a power generator.

In this power generator, as shown in FIG. 3, an engine 9 and a generator 10 are housed and a fan 11 is attached in an outer box 2 having an intake port 8 and an exhaust port 1 on a wall surface 7. Has been done. That is, in this stationary type power generator such as a private power generator or an emergency power generator, an outer box 2 that is a large box-shaped cover with an open lower surface is used, and the front and side surfaces of the outer box 2 are used. An intake port 8 and an exhaust port 1 are formed in the upper part of the wall surface 7 of the. An engine 9 and a generator 10 are housed in such an outer case 7. The engine 9 is an oil-type / diesel-type prime mover, and the generator 10 utilizes the rotation of the engine 9. To generate electricity. The engine 9 and the generator 10 are installed on the floor and are covered with the outer case 2 from above, and a fan 11 is attached to the outer case 2 to form a flow path of air. There is also a partition wall.

As shown in FIG. 1, an exhaust duct 12 is connected to the exhaust port 1 of the outer box 2 of such a power generator. The exhaust duct 12 has a lower surface protruding outward from the exhaust port 1 of the outer box 2 while being inclined upward, and an upper surface 13 is open for exhaust. An upper surface louver 14 is provided as a rainproof structure so as to block it, and a side surface louver 16 is provided as a rainproof structure so as to block it at the connecting surface 15 with the exhaust port 1. The upper surface louver 14 is composed of an assembly of many louver pieces 17 arranged vertically, and the side surface louver 16 is composed of an assembly of many louver pieces 18 arranged horizontally. Each louver piece 17 of the upper surface louver 14 has a predetermined vertical length, and is laterally arranged with a predetermined pitch interval between each other, and each louver piece 18 of the side surface louver 16 has a predetermined length. In addition to having a horizontal length, they are arranged vertically with a predetermined pitch interval between them.

The angle A determined by the vertical length dimension and the horizontal pitch dimension of each louver piece 17 of the upper surface louver 14 is the horizontal length dimension and the vertical pitch dimension of each louver piece 18 of the side louver 16. It is set to be smaller than the angle B determined in. That is, for the upper surface louver 14, the angle A formed by the perpendicular line of the louver piece 17 and the virtual line connecting the lower end of the louver piece 17 and the upper end of the adjacent louver piece 17 is It is set to be smaller than an angle B formed by a vertical line that is a virtual line connecting the right ends of 18 and a virtual line that connects the right ends of the louver pieces 18 and the left ends of the louver pieces 18 above the louver pieces 18. Then, in order to satisfy the relational expression of such angle B> angle A, the vertical length dimension and the horizontal pitch dimension of each louver piece 17 of the upper surface louver 14 and the horizontal length dimension of each louver piece 18 of the side surface louver 16 are determined. The vertical pitch dimension and the like are set respectively. Reference numeral 19 in the drawing denotes a drainage hole attached to the exhaust duct 12, and this drainage hole 19 is attached to the lowermost surface below the side surface louver 16 of the connecting surface 15 to form a plurality of cylindrical holes or , Slit shape. Reference numeral 20 denotes an exhaust passage, which is formed in the exhaust duct 12.

The present invention is configured as described above. Then it becomes as follows. In this power generator, when the fan 11 is driven to rotate during use, air is sucked into the outer box 2 through the intake port 8 and passes through the generator 10 and the engine 9 and then the exhaust port 1 of the outer box 2. , The connecting surface 15 of the exhaust duct 12, the side louver 16, the internal exhaust passage 20, the upper louver 14, the upper surface 13 and the like, and is exhausted to the outside, so that the generator 10 that has become hot during operation, The engine 9 and the like are cooled.

According to the rain-proof structure of the wind exhaust duct 12, the rainwater that has fallen on the upper surface 13 of the wind exhaust duct 12 at the time of rainfall is such that a considerable portion of the rainwater is first provided on the upper surface louver 14 of the upper surface 13. Then, the remaining portion that has passed through the upper surface louver 14 is also removed by hitting the side surface louver 16 provided on the connecting surface 15 and cannot pass through. In this way, rainwater is reliably prevented from entering the inside of the outer box 2 through the exhaust port 1.

That is, first, rainwater that obliquely falls at a larger angle than the above-described angle A of each louver piece 17 of the upper surface louver 14 is removed by hitting each louver piece 17, and passes through as it is. It is not possible. Next, the rainwater, which is smaller than the angle A and has a sharp angle close to the perpendicular, passes through the louver pieces 17 of the upper surface louver 14, but cannot pass through the louver pieces 18 of the side surface louver 16. That is, from the above, the angle B of each louver piece 18 of the side louver 16 is set to be larger than the angle A, so that rainwater that falls at a sharp angle close to the perpendicular always hits each louver piece 18 and is removed. I can't go through. In this way, rainwater is prevented from entering the exhaust port 1 and the inside of the outer box 2.

First, the rainwater removed by hitting each louver piece 17 of the upper surface louver 14 and the rainwater removed by hitting each louver piece 18 of the side surface louver 16 as described above It flows down in the exhaust duct 12 to the drain hole 19 formed on the lowermost surface, and is discharged from the drain hole 19 to the outside. Secondly, in the illustrated example, the ends of the louver pieces 18 of the side louver 16 on the exhaust port 1 side are respectively bent slightly upward, so that each louver piece 18 has a substantially horizontal L-shaped cross section. I am doing it. Therefore, rainwater splashed by hitting each louver piece 17 of the upper surface louver 14 or each louver piece 18 main body of the side surface louver 16 enters the exhaust port 1 and the outer box 2 from a substantially lateral direction. Certainly blocked. Thirdly, since the upper surface 13 of the exhaust duct 12 of this power generator is open, it is opened like the exhaust duct 3 of the conventional example of this kind shown in FIG. 2 (1). The noise is not easily transmitted from the lower surface 5 to the outside. That is, noises of the engine 9, the generator 10, the fan 11 and the like in the outer box 2 are escaped to the upper surface 13 and difficult to be transmitted to the outside.

[0015]

[Effect of device]

 As described above, the rainproof structure of the exhaust duct according to the present invention exhibits the following effects by providing the upper surface louvers and the side surface louvers on the open upper surface and the connecting surface with the exhaust port, respectively. To do.

That is, it is possible to prevent rainwater from entering the inside of the power generator, and avoid adversely affecting the engine and the generator inside. In this way, the problems of the conventional example of this kind are eliminated, and the effects of the present invention are remarkable and significant.

[Brief description of drawings]

FIG. 1 is an explanatory front view showing an embodiment of a rainproof structure for an exhaust duct according to the present invention.

FIG. 2 is a front cross-sectional explanatory view of an exhaust duct of this type of conventional example, FIG. 1 (1) shows one example thereof, and FIG. 2 (2) shows another example.

FIG. 3 is a front view of a power generator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Exhaust port 2 Outer box 7 Wall surface 8 Air intake port 9 Engine 10 Generator 11 Fan 12 Exhaust duct 13 Upper surface 14 Upper surface louver 15 Connecting surface 16 Side louver

Claims (1)

[Scope of utility model registration request] 1. A generator in which an engine and a generator are housed and a fan is provided in an outer box having a wall surface having an intake port and an exhaust port, and exhaust air is connected to the exhaust port of the outer box. A rainproof structure for a duct, wherein the exhaust duct that is provided so as to project outward from the exhaust port of the outer box and has an open top surface, and the connection between the open upper surface of the exhaust duct and the exhaust port A rainproof structure for an exhaust duct, comprising: an upper surface louver and a side surface louver respectively provided on a surface.