JPH05187721A - Discharge terminal device - Google Patents

Abstract

PURPOSE:To prevent an adverse influence from being exercised on the housing side even in a position situated in the vicinity of a housing. CONSTITUTION:A straight tubular discharge guide pipe 3 extends a discharge pipe 1 upward in a way that a base part is connected to the discharge pipe 1 opened in an up state to the top part of a burner 2. A facing case 4 with which the whole, except a lower part, of the discharge guide pipe 3 is covered with a proper distance between the discharge guide pipe 3 and the facing case 4 provided throughout a whole. A discharge window 10 is formed on the front side of the facing case 4 and a discharge guide plate 5 by which the interior is partitioned into an upper front space 11 communicated to the discharge window 10 and a back space 12 and a discharge port 9 at the upper end of the discharge guide pipe 3 is positioned in the front space 11 is provided in the facing case 4. This constitution prevents contamination of the outer wall of a housing and the occurrence of deterioration owing to heat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust terminal device used in a water heater or the like equipped with a combustion device.

[0002]

2. Description of the Related Art A conventional exhaust terminal device for a water heater has a structure as disclosed in, for example, Japanese Utility Model Publication No. 60-113415 and Japanese Utility Model Publication No. 60-106065. That is, as shown in FIG. 3 and FIG. 4, a straight pipe-shaped guide pipe 20 for fitting the base portion into the exhaust pipe 1 extending upward to the top of the combustor 2 such as a water heater and extending the exhaust pipe 1 upward. An umbrella-shaped hood 22 that covers the exhaust port 21 with a gap at the upper end of the
The skirt-shaped flanges 23 facing each other are attached.

In the exhaust terminal device having the above structure, the combustion waste gas exhausted from the exhaust pipe 1 is guided to the guide pipe 20 and diffused in the radial direction from the exhaust port 21 at the upper end of the guide pipe 20 by the hood 22. After this, the hood 22 once further changes the direction downward, and then it is discharged from between the flange 23 and the hood 22 in the entire circumferential direction.

[0004]

A combustor such as a water heater is often installed under the eaves of a house, which is rarely directly exposed to wind and rain for home use. With conventional products that are exhausted radially from the exhaust terminal device because they are close to the house at such an installation location, part of the combustion exhaust gas hits the outer wall of the house, etc. There is.

The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to obtain a highly practical exhaust terminal device in which the adverse effect on the house side due to exhaust gas is avoided even at a position close to the house. And

[0006]

An exhaust terminal device according to the present invention is a straight pipe-shaped exhaust guide pipe for extending an exhaust pipe upward by connecting a base portion to an exhaust pipe opening upward to a top portion of a combustor. The exhaust guide tube is provided with an outer case that covers the entire exhaust guide tube except the lower part with an appropriate space between the exhaust guide tube and the exhaust guide tube. In addition to opening the window, the exterior case is provided with an exhaust guide plate that divides the interior into an upper front space and a lower rear space that communicate with the exhaust window, and in which the upper front side of the exhaust guide pipe is located. Is.

[0007]

In the exhaust terminal device according to the present invention, the combustion waste gas flowing from the exhaust pipe into the exhaust guide pipe is discharged from the exhaust port to the upper front space in the exterior case. This upper front space is a space in which the rear and lower sides are defined by exhaust guide plates, the upper and side surfaces are defined by an exterior case, and the front surface is a space that is open to the outside through an exhaust window, so the exhaust is directed forward from the exhaust window. Will be done.

[0008]

1 is a vertical sectional side view of an exhaust terminal device for a combustor showing an embodiment of the present invention, and FIG. 2 is a plan view thereof.

The exhaust terminal device of the illustrated example is applied to a combustor 2 such as an outdoor water heater having an exhaust pipe 1 open upward in the top part, and its configuration is the exhaust gas of the combustor 2. A straight pipe-shaped exhaust guide pipe 3 which is connected to the pipe 1 and extends the exhaust pipe 1 upward, and an exterior case 4 which determines an exhaust mode.
And an exhaust guide plate 5. A skirt-like outer fitting flange 6 is formed at the base end of the exhaust guide pipe 3 as a connecting structure, and a positioning boss 7 for defining the fitting depth of the exhaust pipe 1 is formed at the fitting portion. Screw holes into which the fixing screws 8 are fitted are formed respectively. The outer case 4 is formed in the shape of a rectangular tube container having a circular arc surface at the top, and the whole of the outer case except the lower part of the exhaust guide tube 3 is held with an appropriate space between the exhaust guide tube 3 and the whole case. It has a lid. The exhaust port 9 at the upper end of the exhaust guide pipe 3 faces the top surface of the outer case 4 with a space in the outer case 4. An exhaust window 10 is provided on the front surface of the outer case 4 below the exhaust port 9.

The exhaust guide plate 5 is a connecting member which is provided inside the outer case 4 and structurally connects the exhaust guide tube 3 and the outer case 4 and integrates them as a whole, and is functionally the outer case 4. The inside is connected to the exhaust window 10 and the upper front space 1 on the front upper side
1 and a lower rear space 12 extending to the rear of the lower part and the upper part, and is a partition and a guide member for guiding the exhaust gas from the exhaust window 10. The rising portion that is divided into the front and the rear is in contact with the top inner surface of the outer case 4 at the upper end, and the bottom portion 13 that is divided into the upper and lower portions is formed.
Is provided with a downward slope, a hole through which the exhaust guide pipe 3 is inserted is provided in a part, and is connected to the exhaust guide pipe 3 by a screw 14. The front edge of the bottom portion 13 forms a rain shelter structure and rides on the lower edge of the exhaust window 10 and is exposed to the outside of the exhaust window 10.

The exhaust terminal device having the above construction is attached by fitting the base portion to the exhaust pipe 1 of the combustor 2 and screwing the connecting portion to the exhaust pipe 1 so that the exhaust pipe 1 extends upward and the exhaust mode To decide. That is, the combustion waste gas flowing from the exhaust pipe 1 into the exhaust guide pipe 3 is
It is discharged from the exhaust port 9 into the upper front space 11 in the outer case 4. The upper front space 11 is a space in which the rear side and the lower side are partitioned by the rising part and the bottom part 13 of the exhaust guide plate 5, the upper side and the side surface are partitioned by the exterior case 4, and the front surface is opened to the outside by the exhaust window 10. Therefore, the exhaust is performed only forward from the exhaust window 10. Since the rising portion and the exterior case 4 are doubly separated from the combustion exhaust gas behind the device, heat does not reach the outer wall even if it is close to the outer wall of the house. Of course,
Since the exhaust air is directed away from the outer wall, the outer wall is virtually free from dirt and deterioration. Further, even if rainwater enters through the exhaust window 10, it will be promptly discharged to the outside due to the slope of the exhaust guide plate 5.

[0012]

As is apparent from the above description of the embodiments, according to the present invention, exhaust is performed only forward from the exhaust window, and the back of the device is separated from the combustion exhaust gas by an outer case. Therefore, even if it is close to the outer wall of the house, the exhaust heat does not reach the outer wall, and the exhaust can be performed so that the outer wall of the house is not polluted or deteriorated.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an exhaust terminal device showing an embodiment of the present invention.

FIG. 2 is a plan view of an exhaust terminal device showing an embodiment of the present invention.

FIG. 3 is a plan view of a conventional exhaust terminal device.

FIG. 4 is a vertical sectional side view of a conventional exhaust terminal device.

[Explanation of symbols]

 1 Exhaust Pipe 2 Combustor 3 Exhaust Guide Tube 4 Exterior Case 5 Exhaust Guide Plate 9 Exhaust Port 10 Exhaust Window

Front Page Continuation (72) Inventor Kazuo Nishio 3-40 Teganoshitahanaka, Nakatsugawa City, Gifu Prefecture Nakatsugawa Branch, Nagoya Works, Mitsubishi Electric Engineering Co., Ltd. No. 21 inside Gifu Kinryo Engineering Co., Ltd.

Claims (1)

[Claims] 1. A straight tubular exhaust guide pipe for connecting a base portion to an exhaust pipe opening upward to a top portion of a combustor and extending the exhaust pipe upward, and the exhaust guide pipe as a whole. And an outer case having an exhaust window opened below the upper opening end of the exhaust guide tube on the front side, and an exhaust gas inside the outer case. An exhaust terminal device having a partition into an upper front space and a lower rear space communicating with a window, and an exhaust guide plate in which an upper end side of an exhaust guide pipe is located in the upper front space.