JPH01266419A - Gas exhausting device for combustion device - Google Patents

Abstract

PURPOSE:To reduce the height of a protrusion from the front of a main body, and to prevent exhaust gas from flowing downward by providing a exhaust gas cover composed of a double constitution; a guide vane of a particular construction and a cover plate. CONSTITUTION:Regarding an exhaust gas cover to be mounted on an outdoor type hot water supply device, a cover plate 7 is formed into U-shape, and its both ends are attached on the exterior 4 of a main body, facing an exhaust port 5a. A front plate 7c of the cover plate 7 is inclined forward so that an upper opening 7a is larger than a lower opening 7b. A guide vane 6 is attached on the exterior 4 of the main body facing the exhaust port 5a, and its lower edge closely touches the lower part of a gas exhaust top 5 so that all the exhaust gas from a gas exhaust port 5a strikes against the guide vane 6 and turns toward the upper opening 7a. The both ends of the guide vane are attached to the insides of the side plates of the cover plate 7 and its front plate is inclined forward. The guide vane 6 forms a path 8, which connects to the upper opening 7a and the lower opening 7b, between the front plate 7c of the cover 7 and the guide vane 6.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a two-exhaust device that is attached to the exhaust section of an outdoor water heater and changes the exhaust direction upward.

2. Description of the Related Art In general, an exhaust device such as a cover is used to direct the exhaust gas upward so that the combustion exhaust from the water heater does not hit objects in front of the water heater.

The conventional cover described above will be explained with reference to FIG. 1 is the exterior of the water heater body, 2 is the exhaust top for discharging combustion exhaust gas, and has two openings in the front. Reference numeral 3 designates a U-shaped exhaust cover whose front surface is inclined so that the upper opening 3m is wider than the lower opening 3b so that the exhaust gas exiting from the opening 2a of the exhaust top 2 does not flow forward.

Problems to be Solved by the Invention However, in the above configuration, most of the exhaust gas is discharged upward from the upper opening 3a, but some of it also flows downward, and the exhaust gas is discharged from the front side of the device outside the main body. A portion of the exhaust gas is absorbed into the air supply O from the air supply hole 1a which is opened in the air supply hole 1a. Therefore, fresh air is not supplied and the burner of the water heater undergoes incomplete combustion.

In addition, if you want to eliminate some of the exhaust gas, it is possible to widen the distance between the device outside the main body and the exhaust cover 3, but the protrusion of the exhaust cover 3 becomes thicker and the front surface of the water heater body becomes larger. In view of the above-mentioned problems, the present invention reduces the amount of protrusion of the exhaust cover from the front of the main body, and improves the downward flow of exhaust gas. To provide an exhaust cover that can prevent this.

Means for Solving the Problems In order to solve the above problems, the exhaust cover of the present invention has a wind direction changing plate on the inside that causes the exhaust flow from the water heater's exhaust port to collide with each other and transforms the flow only upward, and on the outside. The air conditioner is equipped with an opening-shaped shielding plate whose front surface is inclined so that the upper opening is wider than the lower opening, and a flow path is formed between the wind direction changing plate and the front surface of the shielding plate.

Function: With the above-described configuration, the present invention allows all of the exhaust gas to flow upward, and the cost of the exhaust device from the front of the water heater can be made extremely small.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of an exhaust system in an embodiment of the present invention;
FIG. 2 is a perspective view of the exhaust cover.

In Figures 1 and 2, 4 is the exterior of the water heater body, and 5
is an exhaust top that discharges combustion exhaust gas from the exhaust port 5a. 6 is a wind direction changing plate, and 7 is a shielding plate. The shielding plate 7 has an opening shape and is attached to the main body exterior 4 at both ends facing the exhaust port 5a. The upper opening 7a of the shielding plate 7 is larger than the lower opening 7b, and the front surface 7° is inclined so that the upper part thereof is tilted toward the front side.

Further, the wind direction changing plate 6 is arranged opposite to the exhaust port 5m.
The lower edge of the exhaust top 5 is attached to a device external to the main body so that the exhaust from m collides with the exhaust top 5 and all of it is transferred to the upper opening 7a, and both ends are fixed to the side plates of the shielding plate 7 for shielding. The upper part is inclined toward the front inside the plate 7. The wind direction changing plate 6 has an upper and lower opening 7!1 between the front surface 7c of the shielding plate 7.
．． 7b is formed. Reference numeral 9 denotes an air supply port of the combustion section formed in the main body exterior 4.

The operation of the above embodiment will be explained. Combustion exhaust gas O discharged from the water heater main body is forcibly discharged from the exhaust port 5 of the exhaust top 5 by a fan.

The air then hits the wind direction changing plate 6 and flows in the direction of arrow 0'. Therefore, the wind direction of the exhaust gas O is not yet directed upward, but instead flows out to the front. However, as the exhaust gas O flows out into the shielding plate 7, a draft effect occurs in the flow passage 8, and as shown by the arrow E, cold outside air enters from the lower opening 7b through the flow passage 8 and heats up the upper opening 7. It leaks out. Then, due to this air flow E, the flow of exhaust gas D becomes D
``, but instead becomes a flow D'', which flows upward to the exterior 4. Therefore, the air F supplied to the water heater body is always fresh air without the exhaust gas O from the exhaust section flowing into the main body. Furthermore, the temperature of the front surface 70 of the shielding plate 7 is lowered by the flow of the airflow E, eliminating the danger of burns and the like, making it possible to safely and reliably change the direction of the exhaust gas upward. .

FIG. 3 shows another embodiment of the present invention, in which the lower end of the front 7o of the shielding plate 7 is bent inward and upward 10 to make the air flow E stronger and to direct the flow of exhaust gas 0 in the γ direction. It was designed to bring it closer. Other than this, the same functions and effects as in the above embodiment are achieved, and the same parts are given the same reference numerals and detailed explanations will be omitted.

Effects of the Invention As described above, in the present invention, by doubling the wind direction changing plate and the shielding plate, all exhaust air can be directed upward, and the supplied air can always be kept fresh. Further, it is possible to provide an exhaust system in which the amount of the shield plate that protrudes from the water heater main body can be reduced, and the temperature of its surface can be lowered, so that there is no fear of burns or the like.

[Brief Description of the Drawings] Fig. 1 is a sectional view showing one embodiment of the exhaust system of the present invention;
3 is a sectional view showing an embodiment of the same, and FIG. 4 is a sectional view of a conventional exhaust cover. 6... Wind direction changing board, 7... Shielding board. Fig. 1 Sα-'9 Tokiro 6-Mugisarasaka Atsushi Fig. 4

Claims (2)

[Claims] (1) Air flow between a U-shaped shield plate whose front face facing the exhaust port of the combustor is tilted toward the front with the upper opening larger than the lower opening, and the front face of this shield plate. An exhaust system for a combustor, comprising a wind direction changing plate that forms a passageway and faces the exhaust port and guides all of the exhaust gas from the exhaust port upward. (2) The combustor exhaust device according to claim 1, wherein the lower end of the front surface of the shielding plate is bent upward on the inside.