JPH07233948A - Burner for portable cooking stove - Google Patents

Abstract

PURPOSE:To decrease a gas jetting speed to prevent jetting of a unburnt gas by extending a duration for mixing of air - gas inside a burner and reducing a gas pressure even when the burner is made small-sized. CONSTITUTION:A portable cooking stove comprises a gas cylinder shaped and sized to be suitable for carrying, and a gas combustor detachably connected to the gas cylinder and provided with a burner. The cooking stove further comprises a nozzle hole plate 9 in the form of a substantially truncated cone and opened at its bottom surface, a bottom plate 10 which closes the bottom surface of the nozzle hole plate 9, and a partition panel 11 in the form of a substantially truncated cone having a similar figure to that of the nozzle hole plate 9. The partition panel 11 has a gas outflow hole 15 at its center, and is arranged inside the nozzle hole plate 9 with a gas therebetween.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burner for a portable gas stove.

[0002]

2. Description of the Related Art Conventionally, a portable gas stove in which a gas combustor having a gas burner is detachably connected to a gas cylinder having a shape and size suitable for carrying is well known, and is widely used outdoors such as camping and mountain climbing. .

In such a gas burner for a gas stove, it is desired to downsize the burner. However, if the burner is downsized, the capacity of the burner becomes smaller. Therefore, if the gas flow rate from the gas cylinder is the same, the burner is the same. There was a risk that the velocity of the gas ejected from the gas injection hole of No. 2 increased and exceeded the combustion velocity, and a part of the gas was ejected in an unburned state.

[0004]

SUMMARY OF THE INVENTION The present invention prolongs the air-gas mixing time inside the burner even if the size is reduced,
By reducing the gas pressure, the ejection speed of the gas is reduced and the ejection of unburned gas can be prevented.

[0005]

In order to solve the above-mentioned problems, the means adopted by the present invention is to attach and detach a gas combustor (2) having a burner to a gas cylinder (1) having a shape and dimensions suitable for carrying. In a portable gas stove that is freely connected, an injection hole plate (9) having a substantially frustoconical shape and an open bottom surface, and the injection hole plate
A bottom plate (10) for closing the bottom surface of (9), and a partition plate (11) having a substantially truncated cone shape similar to that of the injection hole plate (9).
1) is characterized in that it has a gas outflow hole (15) in the center thereof and a partition plate (11) is arranged inside the injection hole plate (9) to define a gap (12).

[0006]

[Operation] When the injection hole plate (9), the bottom plate (10) and the partition plate (11) are combined, a relatively large diffusion space (16) is formed between the bottom plate (10) and the partition plate (11). , Partition plate (11) and injection hole plate (9)
A limited gap (12) is defined between the
The mixed gas flowing out of the mixing cylinder (6) into the gas burner (4) first enters the diffusion space (16) where it diffuses and the velocity of the gas decreases and gas-air mixing is achieved. It Then, the mixed gas in the diffusion space (16) enters the gap (12) from the gas outflow hole (15) of the partition plate (11), and the gap (12).
It moves along and is ejected from the injection hole (14). Partition board (11)
The gas outflow hole (15) can adjust the speed of entering into the gap (12), and increasing the size of the gas outflow hole (15) increases the speed, and decreasing it reduces the speed. Mixed gas is the gap
Gas pressure is made uniform while moving inside the (12), and all injection holes (14)
Squirt out evenly.

[0007]

According to the present invention, the fuel gas in which the air is sucked and mixed in the mixing cylinder (6) is diffused in the diffusion space (16) to reduce its speed and the mixing is sufficiently performed. Since the pressure is made uniform in the gap (12) and the gas is ejected from the injection hole (14), the mixing time of air and fuel gas is first lengthened to improve the mixing and the gas pressure of the mixed gas is increased. Is decreased, the ejection speed of the mixed gas ejected from the injection hole (14) is also reduced to approach the combustion speed, and ejection in an unburned state is eliminated. Further, by improving the mixing, the properties of the flame become constant, and it is possible to prevent the occurrence of red fire and the phenomenon that the limbs of the flame become unclear due to lack of oxygen.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the drawings. In the figure, (1) is a gas cylinder having a shape and dimensions suitable for carrying,
A gas combustor (2) is detachably connected to the mouth portion, and the connected portion is sealed with a mouthpiece gasket (3).

The gas combustor (2) comprises a gas burner (4), a valve block (5) connected to the gas cylinder (1), and a mixing cylinder (6) connecting the two, as is conventionally known. The valve block (5) incorporates a flow rate adjusting valve that can be adjusted from the outside with a knob (7).

The mixing cylinder (6) has a predetermined length and
It has an intake hole (8) opened to the outside and sucks air by the combustion gas rising in the mixing cylinder (6) to perform mixing.

The gas burner (4) has a generally frustoconical nozzle hole plate (9) having an open bottom surface, a bottom plate (10) for closing the opened bottom surface of the nozzle hole plate (9), and a spray nozzle. These three members (9) (10) are composed of a partition plate (11) which is located inside the hole plate (9) and defines a predetermined gap (12) between the hole plate (9). (11) is
The injection hole plate (9) is integrated by being crimped by folding back the opening peripheral edge (13).

A large number of injection holes (14) are aligned and drilled on the inclined surface of the injection hole plate (9) to allow the ejection of fuel gas. At the center of the bottom plate (10), as shown in FIG.
The upper end of (6) is firmly connected. Partition plate (11) is a nozzle plate
It is formed in a truncated cone shape which is almost similar to (9) and has a slightly smaller diameter, and when combined, a predetermined gap (12) is defined between them. A gas outflow hole (15) is formed at the center of the flat top surface of the partition plate (11). The gas outflow hole (15) of the partition plate (11) is
The speed of entry into the gap (12) can be adjusted; increasing the size of the gas outflow hole (15) will increase the speed, and decreasing it will decrease the speed.

As shown in FIG. 3, the injection hole plate (9) and the bottom plate (1
0), when the partition plate (11) is combined, a relatively large diffusion space (16) is provided between the bottom plate (10) and the partition plate (11), and also the partition plate (11) and the injection hole plate (9). ) With a limited gap (1
2) is defined respectively. Gas burner from mixing cylinder (6)
The mixed gas flowing out to (4) is first in the diffusion space (16).
Because of the ingress and diffusion there, the velocity of the gas is reduced and gas-air mixing is further achieved. The mixed gas in the diffusion space (16) is discharged through the gas outlet hole (1) of the partition plate (11).
It enters the gap (12) from 5), moves along the gap (12), and ejects from the injection hole (14). Since the gas pressure of the mixed gas is made uniform by moving in the gap (12), the gas is uniformly ejected from all the injection holes (14).

In this way, the fuel gas in which the air is sucked and mixed in the mixing cylinder (6) diffuses in the diffusion space (16),
The speed is reduced and the mixing is sufficient. After that, since the pressure is made uniform in the gap (12) and the gas is ejected from the injection hole (14), the mixing time of air and fuel gas is first lengthened to improve the mixing and the gas pressure of the mixed gas is increased. Is decreased, the ejection speed of the mixed gas ejected from the injection hole (14) is also reduced to approach the combustion speed, and ejection in an unburned state is eliminated. Further, by improving the mixing, it is possible to prevent the occurrence of red fire and the phenomenon that the limbs of the flame become unclear due to lack of oxygen because the properties of the flame become constant.

[Brief description of drawings]

FIG. 1 is a front view of the main part.

FIG. 2 is an exploded perspective view of a burner

FIG. 3 is a vertical sectional view of a burner

[Explanation of symbols]

 1 gas cylinder 2 gas combustor 3 mouthpiece gasket 4 gas burner 5 valve block 6 mixing cylinder 7 knob 8 intake hole 9 injection hole plate 10 bottom plate 11 partition plate 12 gap 13 opening edge 14 injection hole 15 gas outflow hole 16 diffusion space

Claims (1)

[Claims] 1. A gas cylinder having a shape and dimensions suitable for carrying.
In a portable gas stove in which a gas combustor (2) equipped with a burner is detachably connected to (1), an injection hole plate (9) having a substantially frustoconical shape and an open bottom surface, and the injection hole plate ( 9) consists of a bottom plate (10) that closes the bottom surface, and a substantially frustoconical partition plate (11) that is similar to the injection hole plate (9), and the partition plate (11) has a gas center in its center. A burner characterized by having an outlet hole (15) and arranging a partition plate (11) inside a nozzle hole plate (9) while defining a gap (12).