JP2956444B2 - Intake and exhaust structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake / exhaust tube of a combustor using oil or gas as a fuel, the intake air required for combustion,
The present invention relates to a structure in which exhaust gas generated by combustion is sucked and exhausted by an intake / exhaust cylinder provided through a wall or the like.

[0002]

2. Description of the Related Art Conventionally, a home heater is known as a burner using oil or gas as a fuel.
As shown in FIG. 2, a double structure of the intake / exhaust tube and the exhaust tube is used, and there are many known examples of the detailed structure.

[0003]

A feature of a combustor using an intake / exhaust tube is that it is optimal for environmental hygiene because it does not pollute the air in the room where the combustor is placed. However, when used in an extremely cold season of, for example, −10 ° C. or less, water vapor generated from gas / petroleum fuel is discharged from the exhaust port together with the exhaust gas. However, there is a problem that the device is closed.

Further, since the exhaust portion and the intake portion are close to each other, a part of the exhaust gas may be mixed into the intake air and flow back into the room, thereby inhibiting combustion or causing a bad odor to leak into the room. Was causing it to come out.

[0005] For this reason, many inventions and ideas have been found in the structure of the top end (top) extending outside the chamber of the intake / exhaust cylinder.
Since the weather conditions vary widely, such as no wind, strong wind, cross wind, and frontal wind, there are advantages and disadvantages in performance, and as a method of preventing exhaust gas from being mixed into intake air, the tip of the exhaust pipe 2 should be sucked as much as possible as shown in FIG. The one that is separated from the front end intake port 1a of the cylinder 1 and the exhaust port 2a is opened straight in the exhaust direction is effective.
It is known to be resistant to freezing.

The only drawback of this exhaust port 2 which is opened straight in the exhaust direction is that when a strong wind blows straight from the opening, the amount of intake air tends to be excessive, and the exhaust is blocked and blocked. In the worst case, explosive combustion is required to improve.

[0007]

SUMMARY OF THE INVENTION The present invention satisfies the various requirements described above, and is provided with an intake cylinder 1 which penetrates a wall or the like and inhales air required for combustion from outside the room, and is installed inside the room. The exhaust pipe 2 for discharging the exhaust gas of the combustor to the outside is formed in a concentric double structure, and the exhaust port 2a of the exhaust pipe 2 is separated and protruded from the intake port 1a of the intake cylinder 1 to protrude. A top and bottom of the exhaust tube 2 is provided with a conical portion 3a having a closed end, and the conical portion 3a is provided with several rows of elongated holes 4 extending in the axial direction.

The long hole 4 is also provided continuously to the cylindrical portion 3b in addition to the conical portion 3a of the exhaust tube 2, so that even if the exhaust tube 2 receives a frontal wind, it is located at the cylindrical portion 3b. The exhaust is smoothly performed from the elongated hole 4.

[0009]

By connecting an intake section and an intake cylinder 1 (not shown) of an oil or gas combustor and an exhaust cylinder 2 to an exhaust section, combustion air of the combustor is supplied to the intake cylinder 1 through the intake pipe. Exhaust gas supplied from outside through the port 1a and generated by combustion is discharged outside through the exhaust port 2a of the exhaust pipe 2.

The exhaust 3 has a top 3 formed in a conical shape and the conical portion 3a has an elongated hole 4 extending in the axial direction to serve as an exhaust port.
Is discharged straight in the direction of the extension of the line, and does not flow backward in the direction of the exhaust port 1a to be mixed with the intake air.

Further, depending on weather conditions, wind may blow from directly in front of the intake / exhaust tube, but the wind diffuses and flows obliquely along the inclined surface formed in the conical portion 3a of the exhaust tube 2. Therefore, the progress of the wind is not stopped or the vortex is not generated around the exhaust pipe 2, and the flow of the exhaust gas is continued without stopping due to the formation of a negative pressure part somewhere in the entire circumference.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction will be described below with reference to the drawings showing an embodiment. FIG. 1 is a partially cut-away side sectional view of a product of the present invention, and FIG. 2 is a development view showing an example of manufacturing an exhaust pipe top of the embodiment. 3 and 4 are partially cutaway side sectional views showing an example of a conventional example.

Reference numeral 1 denotes an intake cylinder, and 2 denotes an exhaust cylinder which is concentrically superimposed on the intake cylinder 1 through an air flow gap.
Has a sufficiently protruding forward portion to form an exhaust port 2a. Further, a gap between the intake cylinder 1 and the exhaust cylinder 2 has a role of the intake port 1a.

Reference numeral 3 denotes a top provided at the tip of the exhaust pipe 2. The top 3 is narrowed down toward the tip to form a conical portion 3
a long hole 4 extending in the axial direction in the conical portion 3a.
Are provided in a row, and the long hole 4 also serves as the exhaust port 2a. Experimental results have shown that wind resistance is improved by narrowing the opening of the long hole 4 toward the tip.

The top 3 can be formed by pressing a metal plate into a petal shape as shown in FIG. 2 and then bending the metal plate into a funnel shape with a concave and convex shape to form a conical portion 3a. A cylindrical portion 3b connected to the exhaust pipe 2 can be formed. On the other hand, as another forming method, after forming a cylindrical body by drawing, a long hole 4 is formed.
May be punched.

Reference numeral 5 denotes an intake pipe mounting portion which communicates with an intake section of a combustor (not shown). Air entering from the intake port 1a is supplied to the combustor via the intake pipe mounting section 5. Reference numeral 6 denotes an exhaust pipe mounting portion that communicates with an exhaust portion that discharges exhaust gas emitted from the combustor and hot air after heat exchange, and communicates with an exhaust port 2 a of the exhaust pipe 2.

[0017]

The present invention has the above-described structure and operation, and does not hinder the exhaust capability due to the wind blown to the top 3 of the intake / exhaust cylinders. However, since the wind smoothly flows in the oblique direction along the conical portion 3a of the top 3, the wind does not cause a vortex near the slot 4 to block the exhaust.

Further, if the long hole 4 is provided so as to be continuous from the conical portion 3a of the exhaust pipe top 3 to the cylindrical portion 3b, even if the conical portion 3a may have some resistance to the exhaust due to the wind, Conversely, a negative pressure portion is formed in the cylindrical portion 3b to improve the exhaust performance, and exhibits substantially the same exhaust performance as that of the non-wind state, and maintains a good combustion state.

Further, the top 3 is formed in a conical shape, and the long hole 4 is formed.
The exhaust port 2a is constituted by the
Therefore, there is no danger of exhaust gas flowing into the intake port 1a, and a stable combustion state is maintained.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side sectional view showing one embodiment of the present invention.

FIG. 2 is a development view of an example of manufacturing an exhaust stack top showing one embodiment of the present invention.

FIG. 3 is a partially cutaway side sectional view showing an example of a conventional example.

FIG. 4 is a partially cutaway side sectional view showing another example of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Intake cylinder 1a Intake port 2 Exhaust cylinder 2a Exhaust port 3 Top 3a Conical part 3b Cylindrical part 4 Slot which forms exhaust port

Claims (2)

(57) [Claims] 1. A concentric double cylinder comprising an intake pipe 1 which penetrates a wall or the like and inhales air required for combustion from outside, and an exhaust pipe 2 which exhausts exhaust gas of a combustor installed inside the room to the outside. The exhaust port 2a of the exhaust pipe 2 is formed into a structure
A suction / exhaust cylinder which is more fully separated and protruded, and has a conical portion 3a with a closed end at the top 3 of the exhaust tube 2 and several rows of elongated holes 4 extending in the axial direction in the conical portion 3a. Structure. 2. The long hole 4 has a conical portion 3a of the exhaust pipe 2,
2. The structure of an intake / exhaust cylinder according to claim 1, wherein said intake / exhaust cylinder is provided continuously also on the cylindrical portion 3b.