JPH0435685Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention uses fuel (kerosene) with a relatively high boiling point and ignites the vaporized fuel to inject a flame. This relates to a bazooka-shaped burner used for sterilizing, killing insects, weeding, etc. in fields.

[Conventional technology and its problems]

Until now, this kind of bazooka-type snow melting or weeding burner has not been proposed, and flame generating equipment is used especially for melting snow and ice around roads and houses, and removing weeds, especially those growing in concrete joints, graveyards, and stone walls. It was unexpected for me to use it.

The reason for this was that it was extremely dangerous to people, livestock, houses, forests, etc.

Taking these points into consideration, the present applicant has proposed the
−81925, Jitsugan No. 59-28686, Jitsugan No. 1983-
In No. 108350, fuel with a relatively high boiling point is used to prevent explosive combustion in this type of equipment, and at the same time, after ignition, the fuel is self-preheated by the fuel vaporization combustion system in the burner pipe, and is safely and efficiently carried out. We proposed a handy-type snow melting or weeding burner that generates a jet flame.

By the way, the bazooka-type burner mentioned above vaporizes fuel and ignites it to emit a flame, but the following method is used to ignite the kerosene fuel stored in the fuel tank. Ta.

Kerosene is poured into a dish and ignited to generate a flame.The flame heats the tip of the fuel vaporizing flexible pipe, vaporizes the fuel passing through the flexible pipe, and ignites it.

Solid fuel is placed in a container, the solid fuel is ignited and combusted, and a fuel vaporizing pipe is pressed against the flaming part to heat it, vaporizing the fuel and igniting it.

However, since all of the above-mentioned methods heat the tip of the fuel vaporizing flexible pipe, the vaporization state deteriorates while reaching the ignition port located deep at the rear end of the fuel vaporizing pipe. The burner had to be filled with kerosene or solid fuel each time it was used, which caused problems such as the burner not being able to ignite quickly.

[Problem that the invention attempts to solve]

In view of the above-mentioned conventional circumstances, the technical problem of the present invention is to increase the vaporization efficiency of fuel, enable quick ignition, and improve the ignitability of the burner after ignition.

[Means for solving problems]

The gist of the present invention will be explained with reference to the accompanying drawings.

A fuel pressurizing pump 2 is attached to the proximal end of a cylindrical fuel tank 1, and a fuel valve 3 and a fuel injection nozzle 4 are provided at the distal end.
A cover tube 7 is attached to the tip of the cover tube 7, a conduit section 5a connected to the fuel injection nozzle 4 is disposed inside the cover tube 7, and a spiral fuel vaporizing flexible tube 5 connected to the conduit section 5a is connected to the cover tube 7. An ignition port 6 is provided at the tip of the cover cylinder 7 with an injection path formed at the center of the shaft, and is connected to the fuel vaporizing flexible pipe 5 via a return conduit portion 5c.
is disposed above the conduit portion 5a with the injection direction directed toward the axial center tip side of the cover cylinder 7, and is located below the ignition port 6 and is a connecting base of the fuel vaporizing flexible pipe 5. An opening is formed in the peripheral wall of the cover cylinder 7 at a position below the return conduit part 5c closer to the ignition port 6 than the fuel vaporization flexible pipe 5, and a plate body 11 is attached to close this opening. A preheating material storage chamber 12 is provided in a concave state when viewed from the inside of the cover cylinder 7 and a protruding state when viewed from the outside of the cover cylinder 7. A window hole 15 is provided in the side wall of the cover tube 7 that protrudes outward.
This is related to the bazooka-shaped burner that was launched.

[Effect]

Operate the fuel pressurizing pump 2 to apply the preheating material 13 (asbestos) in the preheating material storage chamber 12 formed in the cover cylinder 7,
When the fuel valve 3 is opened to discharge kerosene fuel from the ignition port 6, the kerosene fuel drips into the preheating material 13 in the preheating material storage chamber 12 located below.
Once the appropriate amount has soaked into the preheating material 13, the fuel valve 3 is closed.

Then, the preheating material 13 is ignited with a match through the window hole 15, and when it burns for a while, the flame heats the conduit section 5a and the return conduit section 5c, which are the connecting parts of the fuel vaporizing flexible pipe 5 to the ignition port 6. From the fuel valve 3, there is a conduit section 5a, a fuel vaporizing flexible tube 5, a return conduit section 5c, this conduit section 5a which is the base connected to the ignition port 6, and a return conduit section 5c close to the ignition port 6.
The fuel remaining inside is vaporized, and the vaporized fuel is ejected from the ignition port 6, which is ignited by the flame of the preheating material 13, and a flame is injected. Then, the enlarged flame heats the fuel vaporizing flexible pipe 5 at the tip (front) and vaporizes the fuel in the spiral part 5b, and the flame is continuously injected. When the flame becomes smaller, the fuel valve 3 is opened. By feeding the fuel from the conduit portion 5a to the fuel vaporizing flexible pipe 5, the vaporizing action described above is performed, and the flame becomes larger and is injected.

〔Example〕

Hereinafter, an embodiment of the present invention will be described based on the drawings. The bazooka-type burner A includes a fuel tank 1, a fuel pressure pump 2, a fuel valve 3 for controlling fuel supply, a fuel injection nozzle 4, a conduit part 5a, a spiral It is composed of a flexible fuel vaporizing pipe 5, a return conduit portion 5c, an ignition port 6, and a cover tube 7.

The fuel tank 1 is a cylindrical body with a bottom,
A fuel pressurizing pump 2 is inserted into the proximal opening side and is detachably attached by a screwing means, and a fuel injection nozzle 4 is attached to the bottom of the distal end side, and the inlet side of the nozzle 4 is attached to the bottom of the distal end side. has fuel tank 1
A substantially U-shaped inflow pipe 8 is connected to the fuel injection nozzle 4, and a fuel valve 3 is provided on the fuel injection nozzle 4 to control the supply of fuel. It can be opened and closed by a movably mounted operating lever 9.

Further, a fuel vaporizing flexible pipe 5 is connected to the outlet side of the fuel injection nozzle 4 through a straight conduit portion 5a, and a fuel vaporizing flexible pipe 5 is connected to the fuel vaporizing flexible pipe 5 at a position where the fuel vaporizing flexible pipe 5 makes a U-turn and becomes deeper. An ignition port 6 is provided toward the injection path formed by the spiral portion 5b of No. 5.

The fuel vaporizing serpentine pipe 5 supplies the fuel jetted from the fuel tank 1 through the jet nozzle 4 to the ignition port 6, and at the same time preheats and vaporizes the fuel with the flame injected from the ignition port 6 during the supply. , a conduit portion 5a extending linearly forward from the fuel injection nozzle 4;
A spiral portion 5b is formed at the tip. An ignition port 6 is formed at the tip of the return conduit portion 5c, which extends linearly rearward from the spiral portion 5b and has a rear portion bent forward in a U-shape.

The cover cylinder 7 detachably connected to the front end of the fuel tank 1 so as to surround the fuel vaporizing flexible pipe 5 is a cylinder whose diameter is slightly larger than the outer diameter of the spiral part 5b, and is located at the front end side from the vicinity of the ignition port 6. Several ventilation holes 10 are opened at intervals in the circumferential direction on the peripheral wall of the peripheral wall, and the ventilation holes 10 are located at the position where dripping from the ignition port 6 on the lower surface side of the peripheral wall, and the conduit portion 5a and the return conduit portion. Below 5c, a separately formed plate body 11 is welded to form a preheating material storage chamber 12, and the storage chamber 1
2 The asbestos preheating material 13 is inside the holding plate 1 for a plate spring, etc.
4, it is fixed and held in a removable manner.

In addition, window holes 15 are provided in the left and right protruding side walls of the preheating material storage chamber 12, and the preheating material 13 soaked with kerosene is provided therein.
It functions as a hole for lighting the fire with a match and as a ventilation hole.

The position of the preheating material storage chamber 12 is such that the fuel (kerosene) supplied to the fuel vaporizing flexible pipe 5 can be preheated just before reaching the ignition port 6, thereby increasing the amount of fuel ejected from the ignition port 6. It can improve ignitability.

Next, to explain the fuel operation of the bazooka-type burner described above, first, remove the fuel pressure pump 2 from the fuel tank 1, inject a predetermined amount of kerosene into the fuel tank 1, and then reinstall the pump 2. , press the handle 2a of the fuel pressurizing pump 2 two or three times to introduce an appropriate amount of air into the fuel tank 1 and pressurize the inside of the tank 1. At this time, if the pressure inside the tank 1 becomes too high, the safety valve 16 is activated and the pressure is automatically adjusted to an appropriate level.

Next, place the burner A on a flat ground, etc., push the rear part of the operating lever 9 downward to open the fuel valve 3 little by little, and let the kerosene in the fuel tank 1 flow from the fuel injection nozzle 4 through the fuel vaporizing flexible pipe 5. The kerosene is poured into the preheating material (asbestos) 13 in the preheating material storage chamber 12 through the ignition port 6, and once the kerosene has soaked into the preheating material 13, the operating lever 9 is released and the fuel valve 3 is closed. After that,
The preheating material 13 is ignited with a matchstick or the like, and when it burns for a while, the flame connects to the fuel vaporizing flexible pipe 5.
a. The return conduit section 5c is preheated and the kerosene remaining in the tube section is vaporized and ejected from the ignition port 6 to ignite and inject a flame, and the flame is injected forward from the ignition port 6. heats the spiral part 5b to vaporize the fuel remaining in the part and send it to the ignition port 6, and when the flame becomes small, the operating lever 9 is turned off.
is operated to open the fuel valve 3, and the pressurized kerosene in the fuel tank 1 is supplied to the ignition port 6 via the jet nozzle 4 and the fuel vaporizing flexible pipe 5. Since the supplied fuel is preheated by the flame in the fuel vaporization pipe 5 and the ignition port 6, the ejected kerosene is immediately vaporized, ignited at the ignition port 6, and completely combusted, producing a high-temperature combustion flame. The liquid is formed and ejected from the tip of the spiral portion 5b.

Furthermore, since such complete combustion continues for several minutes per operating cycle of the pressurizing pump 2, the fuel pressurizing pump 2 is repeatedly operated for an appropriate period of time to continue complete combustion.

Therefore, the burner of the present invention, which is deceptively ignited and burned, can be used, for example, to melt snow and ice on the ground, to burn down weeds on roads and graveyards, to kill insects and sterilize seedbeds, or to post-process harvested fields. easily used.

[Effect of idea]

As detailed above, the bazooka-type burner of the present invention has a preheating material storage chamber on the peripheral wall of the cover tube surrounding the fuel vaporizing pipe and the ignition port, and the preheating material storage chamber is located at a lower position where it can receive the fuel dripping from the ignition port. , and is formed below the conduit section which is the connecting base of the fuel vaporizing flexible pipe, and below the return conduit section closest to the ignition port, and the preheating material is stored in the storage chamber, so that the first ignition The structure uses a preheating material to heat both the deep conduit section and the return conduit section near the ignition port to vaporize the fuel necessary for This allows for very quick and effective vaporization ignition.

Moreover, after ignition, as before, the flame ejected from the deep ignition port heats and vaporizes the fuel vaporizing coil at the tip, resulting in extremely good ignition maintenance.

Moreover, since the preheating material is stored in the preheating material storage chamber formed in the cover cylinder in a recessed state when viewed from the inside of the cover cylinder and in a protruding state when viewed from the outside of the cover cylinder, it is fixed in a predetermined position without shifting. By holding the igniter in place and letting the fuel drip from the ignition port, the fuel can be reliably soaked in and the ignition work can be done quickly and reliably. This solves the inconvenience of carrying it separately.

In addition, since a window hole is provided on the protruding side wall of this preheating material storage chamber, it is easy to insert the pine and ignite the preheating material, and it also functions as a hole for putting in and taking out the preheating material, as well as a ventilation hole. do.

In addition, since the preheating material storage chamber is formed by forming an opening in the peripheral wall of the cover cylinder and attaching a plate to close this opening, it can be easily installed in the cover cylinder of an existing bazooka-type burner. This is a bazooka-shaped burner with an extremely practical ignition device.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partially cutaway front view, Fig. 2 is an enlarged sectional view taken along line 2-2 in Fig. 1, and Fig. 3 is a state in which the preheating material is ignited. FIG. A... Bazooka type burner, 1... Fuel tank,
2...Fuel pressure pump, 3...Fuel valve, 4...
...Fuel injection nozzle, 5...Fuel vaporization serpentine pipe, 5a
. . . Conduit portion, 5c .

Claims (1)

[Scope of utility model registration request] A fuel pressurizing pump is attached to the proximal end of the cylindrical fuel tank, and a fuel valve and a fuel injection nozzle are provided at the distal end.A cover cylinder is attached to the distal end of the fuel tank, and the fuel is injected into the cover cylinder. A conduit section connected to the jet nozzle is provided, and a spiral fuel vaporization flexible tube connected to this conduit section is provided at the tip of the cover tube with an injection path centered around the cover cylinder axis. The ignition port connected via the conduit section is placed above the conduit section and the injection direction is directed toward the tip side of the axial center of the cover cylinder, and the ignition port is located below the ignition port and is connected to the fuel vaporization port. An opening is formed in the peripheral wall of the cover cylinder at a position below the conduit section which is the connection base of the flexible pipe and the return conduit section closer to the ignition port than the fuel vaporizing flexible pipe, and the dish body 1 closes this opening.
1 is attached to form a preheating material storage chamber in a recessed state when viewed from inside the cover cylinder and a protruding state when viewed from outside the cover cylinder, and a preheating material is stored in this preheating material storage chamber. A bazooka-shaped burner with a window hole in the side wall that protrudes outward from the cover cylinder of the preheating material storage chamber.