JPS589063Y2 - Combustor supply and exhaust stack for outdoor installation - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a balanced type supply and exhaust stack for a combustor for outdoor installation.

Conventionally, the supply and exhaust pipes of combustors for outdoor installation, such as outdoor wall-mounted water heaters, have an upper exhaust pipe section 1' and a lower supply pipe section 2, as shown in FIGS. 3 and 4, for example. 'Toga partition plate 9
Since it is completely separated in the vertical direction at '', there is a disadvantage that the air supply and exhaust are unbalanced, especially in the case of wind from above or from the front, causing flames to flare up from the inner shell.

In other words, in the case of the structure shown in Figure 3, there is insufficient air supply in response to the wind from above, and wind pressure is applied to the exhaust air, which completely upsets the balance of supply and exhaust, causing flames to flare up from the inner shell. It was always.

As a measure against such dangers, as shown in Figure 4, is an air supply guide B provided between the appliance and the wall A?
The effect of resolving the lack of air supply against wind from above and not applying wind pressure to the exhaust gas has not yet been sufficiently achieved.

This idea is not only applicable to the wind from above in the installation state described above, but also effectively utilizes the property that the wind blows downward in the wind pressure zone near the wall surface, which occurs in response to the horizontal wind from the front. The system aims to improve safety by providing windy m1lJE, which could not be expected in conventional systems, and also enables the above-mentioned effects to be even more expected against winds from diagonally above. An example of this is shown below with drawings. explain.

In the drawings, reference numeral 1 denotes the upper exhaust pipe part of the supply/exhaust pipe, which is formed in the inner shell by having exhaust ports 2 at four locations along the outer periphery of the upper plate, and exhaust ports 4 also in the peripheral wall. The exhaust gas discharged from the combustion chamber 5 through the heat collector 6 and through the duct 7 is discharged into the atmosphere from these exhaust ports 2 and 4.

Of course, the exhaust port 2 may be formed continuously along the outer peripheral edge of the upper plate of the exhaust tube portion 1.

Further, the upper plate of the exhaust cylinder portion 1 is horizontally bulged 3 upward by a certain height, leaving a part of its outer peripheral edge (including the exhaust port 2).

Reference numeral 8 denotes a supply cylinder connected to the lower part of the exhaust pipe 1 via a partition plate 9, 11 an air supply port bored in the peripheral wall thereof, and 12 crossing a part of the exhaust pipe 1 on the house wall A side. The air supply passage is defined by a U-shaped member and communicates with the supply cylinder section 8 .

The air supply opening of the supply cylinder part 8 utilizes a part of the exhaust ports 2 on the house wall surface A side among the four exhaust ports 2 bored along the outer peripheral edge of the upper plate of the exhaust cylinder part 1.

Note that a slight gap a is provided between the partition plate 9 and the front wall of the air supply and exhaust pipe σ.

This idea was constructed as described above, so the wind from above,
In particular, the wind from diagonally above hits the bulge 3 of the upper plate and the exhaust port 2
As the air passes outward from above, this air flow causes the exhaust port 2 to
At the same time, when the wind from above suppresses the exhaust gas, the exhaust gas is discharged through the gap a, so that the exhaust gas is not suppressed at all.

Furthermore, even when a horizontal wind blows from the front, a wind pressure band is created near the wall A and the property of downward wind can be effectively utilized to introduce air into the air supply passage 12 from the exhaust port 2. The balance is unaffected by wind from either direction and remains constant at all times.

Therefore, the conventional danger of flames escaping from the inner shell depending on the direction of the wind is eliminated, and it is possible to use the device safely.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of this invention, FIG. 2 is a longitudinal sectional side view, and FIGS. 3 and 4 are schematic longitudinal sectional side views of a conventional example. 1...Exhaust tube part, 2...Exhaust port, 3.
...Bulge, 4...Exhaust port.

Claims (1)

[Scope of utility model registration request] Among the exhaust ports bored along the outer periphery of the upper plate of the upper exhaust pipe section, a part of the exhaust port on the wall side of the house is used as an air supply port, and an air supply passage is provided that leads from the air supply port to the lower supply pipe section. Also, an air supply and exhaust pipe for a combustor for outdoor installation, characterized in that the upper plate inside the exhaust port is bulged upward.