JP2002295809A - Combustion tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combustion tool capable of fine adjustments for a feed amount of air fuel mixture. SOLUTION: The combustion tool is provided with a fuel container; a burner body 101, having constitution to inject fuel through a burner head 102; a coupling pipe 200; and a carburetor 300 provided on the body 101 for converting fuel into a gasified, fuel; and a fuel feed amount adjusting means is situated at a fuel discharge port 106 of a carburetor 106.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burning appliance, particularly a burning appliance represented by a portable gas burner carried at the time of climbing or camping.

[0002]

2. Description of the Related Art Generally, a burning appliance includes a fuel container for storing fuel and a burner body for burning fuel supplied from the fuel container. In general, a compressed liquefied petroleum gas is contained in a fuel container. When a valve attached to the fuel container is opened, the liquefied petroleum gas is discharged and supplied to the burner main body side, and the burner head section. Burned in.

[0003] In general, a portable gas burner carried on mountain climbing or camping or the like has a fuel container containing liquefied petroleum gas and a burner main body integrally connected, and mixes air with fuel contained in the fuel container. And burn it in the burner head.

[0004] Here, liquefied petroleum gas or gasoline, which is a fuel, is a compressed liquid fuel before being mixed with air, and must be burned at an appropriate air-fuel ratio. For this reason, conventionally, air has been mixed with fuel by providing a hole in a pipe portion connecting the fuel container and the burner as a means for sending air.

The air-fuel ratio (A / F) is A / F = (air amount)
The burn-up can be appropriately changed by changing this air-fuel ratio. In general, at the time of ignition, the amount of fuel is increased to make it easier to ignite, and after ignition, combustion is performed while changing the air-fuel ratio by changing the amount of air or the amount of fuel to reduce waste of consumed fuel,
At the time of fire extinguishing, supply of fuel is stopped.

[0006]

However, in a conventional burning appliance, particularly a portable gas burner, a fuel container and a burner are integrally connected, and a valve attached to the fuel container is opened and closed. Thus, the thermal power has been adjusted by adjusting the amount of fuel supplied from the fuel container. The fuel stored in the fuel container
Since the pressure gradually decreases with use and the fuel supply amount itself to the burner decreases, it has been difficult to finely adjust the thermal power.

[0007] In portable gas burners, which are often used outdoors, there is a great need for fine adjustment of thermal power because combustion is easily affected by wind.

Further, when gasoline is used as fuel, gasoline is stored in a fuel container at room temperature and is difficult to vaporize, so that an air-fuel mixture having a low air-fuel ratio (large mixture of fuel) is sent to the burner head. Otherwise, rapid ignition and stable blue-fire combustion are difficult.

Accordingly, an object of the present invention is to provide a combustion appliance suitable for a portable burner and capable of performing fine adjustment of the air-fuel ratio reliably and easily.

[0010]

In order to solve the above problems, the present invention employs the following means.

First, in the first aspect, a fuel container for storing fuel, a burner body configured to eject fuel supplied from the fuel container from a burner head portion through a connecting pipe communicating with the fuel container, With respect to the combustion apparatus having at least the fuel supply device, the burner main body is provided with a fuel delivery amount adjusting means for adjusting the delivery amount of the fuel.

According to this means, the amount of fuel delivered at the stage of being discharged from the fuel container and sent to the burner main body is not adjusted by opening and closing the valve provided on the fuel container, but adjusting the heating power of the burner head. , The influence of the pressure of the fuel container is reduced, and the thermal power can be finely adjusted without fail.

Further, since the fuel feed amount adjusting means is provided on the burner body having the burner head portion, the fuel feed amount can be adjusted immediately before the fuel is supplied to the burner head portion, and the thermal power of the burner head portion can be visually checked. Since the fuel supply can be adjusted while the fuel is being fed, the degree of the thermal power adjustment can be easily grasped.

Further, since the fuel container containing the fuel and the burner main body for burning the fuel are provided separately, and the fuel container can be used away from the burner main body, safety can be improved. But desirable.

According to a second aspect of the present invention, the burner main body is provided with a carburetor communicating with the connecting pipe and converting fuel into vaporized fuel by the thermal power of the burner head. The carburetor is provided at the fuel discharge port.

In this means, since the amount of vaporized fuel discharged from the fuel discharge port of the carburetor is adjusted instead of the amount of fuel before vaporization, fine adjustment of the heating power is easily performed.

According to a third aspect of the present invention, the fuel delivery amount adjusting means includes:
A screw-type valve was used. Specifically, the amount of the vaporized fuel discharged from the fuel discharge port of the vaporizer is determined by sliding the screw-type valve.

This means can be used as a means for finely adjusting the thermal power manually since the screw-type valve can be slid slightly by a method of rotating a lever protruding from the burner body.

Further, since the pressure of the vaporized fuel discharged from the vaporizer is high, a load is applied to a portion where the amount of the vaporized fuel is adjusted. However, by using a screw-type valve that is screwed and hard to slide even under the pressure of the vaporized fuel, the opening / closing amount of the fuel discharge port of the vaporizer can be reliably controlled.

According to a fourth aspect of the present invention, an air-fuel ratio adjusting means for adjusting an air mixing ratio of the fuel supplied to the burner head is provided in a region subsequent to the fuel feeding amount adjusting means.

With this means, it is possible to adjust both the amount of vaporized fuel and the air-fuel ratio in the vicinity of the burner head. That is, since the adjustment of the fuel supply amount and the adjustment of the air mixing ratio can be used together, the thermal power adjustment can be performed more finely.

According to a fifth aspect of the present invention, the air-fuel ratio adjusting means is a means for mixing the fuel sent through the fuel feeding amount adjusting means by suctioning the air with a negative pressure.

According to this means, air can be mixed with the vaporized fuel with a simple structure without using a complicated device, so that an inexpensive combustion apparatus can be provided.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a combustion apparatus according to the present invention will be described below with reference to FIGS.

FIG. 1 is an overall structural view of a part of a combustion apparatus according to the present invention in cross section, and FIG. 2 is a preferred embodiment of a fuel feeding amount adjusting means provided on a burner main body shown in FIG. It is an enlarged view of a certain screw insertion type valve part.

Hereinafter, a portable gas burner which is a preferred embodiment as a combustion appliance according to the present invention will be described with reference to the accompanying drawings, but the combustion appliance according to the present invention is widely applied to a gas burner, a stove and the like. it can.

First, the portable gas burner 100 includes a portable fuel container (not shown) functioning as a fuel container, a portable connecting pipe 200 through which fuel discharged from the fuel container passes, and a connecting pipe 200. And a burner body 101 that communicates.

The fuel stored in a fuel container (not shown)
After passing through a connecting pipe 200 connected to the fuel container, the fuel is sent to a vaporizer 106 for vaporizing the fuel. Vaporizer 1
The fuel that has passed through 06 is converted into a vaporized fuel and sent into the burner main body 101, and is ejected from a burner head 102 attached to an upper portion of the burner main body 101, ignited and burned.

Here, the vaporizer 106 is arranged close to the burner head 102. With this configuration,
The function of heating the fuel passing through the vaporizer 106 by the thermal power of the burner head 102 and converting the liquid fuel into the vaporized fuel is exhibited. Then, the vaporizer 106 plays a role of facilitating the mixing of the fuel and the air by vaporizing the fuel, and facilitating obtaining an appropriate air-fuel ratio.

A substantially cylindrical cylinder 107 is attached to the fuel outlet 106a directed downward of the tubular carburetor 106 so as to be orthogonal to the fuel outlet 106a. An opening 107a is formed in a peripheral wall portion of the cylinder 107 facing the fuel discharge port 106a.

On the inner peripheral wall surface of the cylinder 107, a female screw 1 is provided.
07b is cut off. A valve 108 having a male screw formed on the peripheral wall surface to be screwed with the female screw 107b is screwed into the inner cylinder portion 107c of the cylinder 107.

The distal end 108a of the valve 108 is configured such that when the valve 108 is slid in the direction of arrow T, the opening amount of the opening 107a can be increased or decreased. The slide of the valve 108 is denoted by reference numeral 108b.
Lever 109 protruding from the base end of the valve to the outside
This is performed by rotating.

[0033] The cylinder 107 is inserted into a fuel transmission pipe indicated by reference numeral 105. Vaporizer 106
From the fuel discharge port 106a to the opening 10 of the cylinder 107.
7a, the tip opening 10 of the cylinder 107
The vaporized fuel discharged from 7d passes through the fuel delivery pipe 105 and is sent to the burner head 102. The fuel transmission pipe 105 is attached to a peripheral member so that the vaporized fuel X discharged from the vaporizer 106 does not leak outside.

Here, the tip opening 10 of the cylinder 107 is
On the peripheral wall portion of the fuel transmission pipe 105 around 7d,
Air holes 105a for communicating the fuel delivery pipe 105 with the atmosphere
Are formed. The air holes 105a serve to mix the air A with the vaporized fuel discharged from the distal end opening 107d and traveling through the fuel transmission pipe 105 toward the burner head 102. That is, the air A is taken into the fuel transmission pipe 105 by using the negative pressure of the vaporized fuel (air-fuel mixture) X discharged from the front end opening 107d, and is introduced into the vaporized fuel X. It is configured to be mixed.

More specifically, the vaporized fuel X discharged from the vaporizer 106, when the valve 108 is slid backward to open the opening 107a,
a, and is discharged into the fuel delivery pipe 105. The discharged vaporized fuel X is mixed with air A taken in from the air holes 105a to form an air-fuel mixture Y.

Thus, the air A is further added to the vaporized fuel X.
The air-fuel ratio of the air-fuel mixture Y into which the fuel gas is taken is increased, so that good blue-fire combustion can be obtained in the burner head 102.

It should be noted that the air hole 107a is
Preferably, the diameter is about 1/2 of the inner diameter of 5,
In some cases, it may be provided at a plurality of locations. Air hole 107
If the inner diameter of a is smaller than の of the inner diameter of the fuel delivery pipe 105, the air A will not be sufficiently taken in.
If it is larger than 2, the vaporized fuel X leaks into the atmosphere through the air holes 107a.

On the outer periphery of the burner head 102, a flame converging ring 103 for converging the flame above the center of the burner head 102, and a windbreak ring 1 joined to the upper part thereof
04 is provided. The windshield ring 104 prevents the extinguishing of the flame by the wind. Note that reference numeral 1 in FIG.
Reference numeral 10 denotes a leg that supports the burner main body 101 and places a cooking container and the like.

Hereinafter, a method of using the portable gas burner according to the present invention when using gasoline fuel will be briefly described.

First, a fuel container (not shown) contains gasoline fuel. Gasoline fuel is mixed with air taken into the fuel container by a predetermined method, and is discharged to the connection pipe 200 as fuel in an air-fuel mixed state.

The fuel in the air-fuel mixed state is supplied to the carburetor 106
To be vaporized fuel X. The vaporized fuel X can be sent to the burner head 102 as the air-fuel mixture Y by passing the opening 107a by rotating the lever 109 in a predetermined direction and sliding the valve 108.

Here, the procedure for igniting the fuel ejected from the burner head 102 is as follows. First, the valve 108 provided in the fuel transmission pipe 105 is closed, and then the fuel container (not shown) is opened. The valve is opened to supply the air-fuel mixture (X) to the burner main body 101 side. Then, the air-fuel mixed fuel introduced into the vaporizer 106 is converted into vaporized fuel. Therefore, while bringing the fire source close to the burner head 102, the lever 109 is rotated in a predetermined direction to slowly open the valve 108. The progress of the fuel in the air-fuel mixed state that is compressed and sent in the fuel container is still in the high pressure state because it is still shut off by the valve 108.
For this reason, when the valve 108 is opened, the air-fuel mixture Y advances through the fuel supply pipe 105 and is ejected from the burner head 102 at high pressure, and is ignited and burned within a short time.

After the ignition, the lever 109 is rotated in a predetermined direction to adjust the fuel supply amount and the air-fuel ratio, and to finely adjust the heating power. After the burner is used, the fuel container valve is closed to stop the fuel release.

As described above, the combustion apparatus 100 according to the present invention
Since the heat power can be adjusted on the burner main body side, the operation is easy, and the fine adjustment of the heat power can be performed very easily.

[0045]

According to the present invention, the adjustment mechanism for adjusting the amount of air-fuel mixture supplied from the fuel container is provided in the fuel air duct of the burner main body, so that the fine adjustment of the supply amount of the air-fuel mixture can be easily performed. Can be done. That is, it is possible to increase the ratio of the amount of air to fuel, that is, to maintain the air-fuel ratio in a desired state, and to change the degree of combustion very easily. Thus, it is possible to provide a burning appliance excellent in portability, particularly a portable gas burner, by preventing the extinguishing by wind.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a cross section of a part of a burning appliance according to the present invention.

FIG. 2 is an enlarged view of a screw-in valve which is a preferred embodiment of a fuel feeding amount adjusting means provided in a burner main body.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 portable gas burner 101 burner main body 102 burner head 105 fuel delivery pipe 105 a air hole 106 carburetor 106 a fuel discharge port 107 cylinder 107 a opening 107 b female screw 107 d tip opening 108 valve 108 a tip 109 lever 200 communication pipe X vaporized fuel Y Air-fuel mixture A Air

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[Procedure amendment]

[Submission date] April 26, 2001 (2001.4.2
6)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F24C 3/14 F24C 3/14 EF Term (Reference) 3K052 AA10 AB11 BA01 BA13 BA35 CA01 EA00 3K055 AA10 BA01 BA02 BA11 3K068 FC01 FC05 FD01 HA00 HA08 JA01 JA06

Claims (5)

[Claims] 1. A combustion system comprising at least a fuel container for storing a fuel, and a burner main body configured to eject fuel supplied from the fuel container from a burner head through a connecting pipe communicating with the fuel container. A burner, wherein the burner main body is provided with fuel feed rate adjusting means for adjusting the feed rate of the fuel. 2. A structure in which a vaporizer communicating with the connecting pipe and converting fuel into vaporized fuel by the thermal power of the burner head is provided in the burner main body. The combustion appliance according to claim 1, wherein the combustion appliance is provided at a fuel discharge port of the vaporizer. 3. The combustion apparatus according to claim 2, wherein the fuel delivery amount adjusting means is a screw-in valve. 4. In the area subsequent to the fuel delivery adjusting means,
The combustion appliance according to any one of claims 1 to 3, further comprising an air-fuel ratio adjusting means for adjusting an air mixing ratio of fuel supplied to the burner head. 5. The air-fuel ratio adjusting means according to claim 4, wherein said air-fuel ratio adjusting means is means for sucking air under a negative pressure to mix with fuel sent through said fuel feed amount adjusting means. Burning appliances.