JPS62108911A - Liquid fuel burner - Google Patents

Abstract

PURPOSE:To make it possible to reduce the cost for the burner and save spaces of a combustion portion and a vaporizing portion by integrally forming a vaporizing chamber on the outer periphery of a throat which performs sucking up and mixing a vaporizing fuel. CONSTITUTION:A vaporizing chamber 6 is formed into a hermetically sealed structure by a cylindrical outer wall 7 blocking the outer periphery of said vaporizing chamber 6, a burner bottom wall 6 blocking the upper part thereof, and a lid member 8 blocking the lower opening. A liquid fuel supply port 9 and a vaporized fuel exhaust port 10 are respectively formed at the lid member 8, and an oil feed pip 11 connected to a liquid fuel pump is connected to the supply port 9. Further, one end of a vaporized fuel conduit 12 is connected to the vaporized fuel exhaust port 10, and another end thereof is connected to an ejection port 1. Further, a sheathed heater 13 for vaporizing the liquid fuel is integrally buried in the outer peripheral part by casting. A ring-shaped projection 15 is formed on the upper end of the vaporizing chamber outer wall 7, and this is for conducting the heat of a flame 14 effectively to the vaporizing chamber 6.

Description

[Detailed Description of the Invention] [Industrial Application Ii! fl This invention relates to a liquid fuel combustion device in which liquid fuel is preheated and vaporized by an electric heating element attached to a vaporizer, and the liquid fuel is ejected from an ejection port into a slow circular burner and combusted.

[Conventional technology]

Figure 2 is a cross-section of the main parts of a conventional liquid fuel 1p4 combustion device.
It is a f11 diagram. In the figure, reference numeral 1 denotes a spout that spouts vaporized fuel sent through a conduit 1a from a vaporization chamber (not shown) in which liquid fuel is preheated and vaporized by an electric heating element, and 2 is spouted from the spout 1. A throat for receiving vaporized fuel, 3 a burner head formed of a wire mesh, etc., 41 a head holder for holding down the head 3, which clamps and fixes the burner head 3 together with the burner bottom wall 5 provided at the top of the throat 2. It is.

Next, the operation will be explained. The vaporized fuel A ejected from the spout 1 sucks the surrounding air B into the throat 2 by its own force, and moves upward! : 1 also becomes a mixture with air and reaches the burner and rad 3. When the air-fuel mixture flowing out from the outer periphery of the burner head 3 is ignited, a combustion flame is generated, and combustion continues due to the continuously fed fuel.

[Problem that the invention seeks to solve]

In the conventional Bunsen-type combustion device as described above, the element configuration is completely different from the combustion part and vaporization part, so it is relatively expensive and the surrounding parts of the combustion part and vaporization part are There was a problem that space loss was large and the installation location was relatively large.

The invention of Part B was made in order to solve the above-mentioned problems, and aims to provide a liquid fuel combustion device that can reduce costs and save space.

[Means for solving problems]

The liquid fuel combustion device according to the present invention is integrally provided on the outer circumference of a throat that sucks and mixes vaporized fuel and air.

[For production]

In this invention, since the vaporization chamber is provided using the empty space around the throat, space is saved in manufacturing the combustion device, and cost can be reduced.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, the spout 1. Throat 2. t<-chi head 3. The head presser 4 and the burner bottom wall 5 have the same structure as the conventional product shown in FIG.

In this embodiment, a vaporization chamber 6 is integrally provided around the outer circumference of the throat 2.

The vaporization chamber 6 has a cylindrical outer wall 7 covering the outer periphery, and its −F
The burner bottom wall 5 that closes the burner bottom wall 5 and the lid member 8 that closes the lower opening form a sealed structure, and the lid member 8 is formed with a liquid fuel supply port 9 and a vaporized fuel discharge port 10, respectively. A refueling vibrator 11 connected to a liquid fuel supply pump (not shown) is connected to the supply port 9.
Further, one end of a vaporized fuel conduit 12 is connected to the vaporized fuel discharge port 10, and the other end is connected to the jet port 1.

Further, a sheathed heater 13 for vaporizing liquid fuel is integrally embedded in the outer peripheral portion of the outer wall 7 by casting. 1
5 is a ring-shaped protrusion formed at the upper end of the outer wall 7 of the vaporization chamber;
This is to effectively conduct the heat of the flame 14 to the vaporization chamber 6.

Next, the operation of this embodiment configured as described above will be explained.

When the liquid fuel sent through the entire fuel supply pipe 11 by the pump enters the vaporization chamber 6 from the fuel supply port 9, it vaporizes in the vaporization chamber 6, which is preheated to a temperature of 200°C to 300°C by the heater 13. be done. When the internal pressure increases due to vaporization and expansion, the vaporized fuel is ejected from the ejection port 1 into the slow l-2 through the discharge port 10 and the conduit 12. At this time, air is sucked from the lower opening of the throat 2 by the vaporized fuel injection force and becomes an air-fuel mixture in the throat 1-2, which is ignited in the burner head 3 to form a flame 14. Fire 14
In order to heat the vicinity of the protrusion 15 at the upper end of the vaporization chamber, the vaporization chamber 6 is heated by the heat conduction. Note that by appropriately setting the amount of protrusion of the protrusion 15, it is possible to maintain the vaporization chamber 6 at an appropriate temperature, and it is not necessary to energize the sheathed heater 13 during combustion.

In the Bunsen burner of this embodiment as described above,
Since the vaporization chamber 6 is integrally provided on the outer periphery of the throat 2, it is possible to reduce costs compared to the conventional structure in which the combustion part and the vaporization part are separate structures, and the vaporization chamber 6 is provided in the throat 2. Since they are installed using the empty space around 2, it is possible to save space in the installation location 1, and combustion heat can be effectively used for vaporizing liquid fuel.

Incidentally, in the above embodiment, the case where the lid member 8 for forming the vaporization chamber is provided at the bottom of the outer wall was described;
The same effect can be obtained even if the burner is turned upside down and the upper end is closed with a lid member that also serves as the burner bottom wall 5.

〔Effect of the invention〕

As described above, according to the invention of B, the cost of the combustion device can be reduced, and the combustion part and the vaporization part can be integrated into the outer periphery of the throat for sucking and mixing the vaporized fuel and air. It becomes possible to save space.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional side view of a liquid fuel combustion device showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view of essential parts of a conventional combustion device. In the figure, 1 is a spout, 2 is a throat, 3 is a burner head, 4 is a head presser, 5 is a burner bottom wall, 6 is a vaporization chamber, 7
is an outer wall for the vaporization chamber, 8 is a lid member, 9 is a liquid fuel supply port, 1
0 is the vaporized fuel discharge port, 11 is the oil supply pipe, and 12 is the vaporized fuel conduit. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent: Masuo Oiwa (2 others) Fig. 1 1. Healing Figure 2 i, L Procedural amendment (voluntary) Showa FD August 5th 1, Incident indication Patent application No. 1988-250024 2,
Title of the invention: Liquid fuel combustion device 3, relationship to the amended case Patent applicant address: 2-2-3 Marunouchi, Chiyoda-ku, Tokyo Name (601) Mitsubishi Electric Corporation Representative Moriya Shiki 4, Agent Address: 2-2-3 I, Marunouchi, Chiyoda-ku, Tokyo
, -,q,'L; Amend the scope of claims as shown in the attached sheet. (2) In the 13th line of page 1 of the specification, the phrase "to this invention" is amended to read "this invention". (2) On page 1, lines 14 to 14, the words "slow and eject" are corrected to "eject into a circular burner with a throat." 7. Attached documents (1 document stating the entire text of the claims after amendment in 11) Claim 2 after amendment: Throat for sucking and mixing vaporized fuel spouted from the spout and external air A combustion device comprising a combustion head and a head holder provided at the upper part of the combustion apparatus, characterized in that an upper plate for a vaporization chamber for vaporizing liquid fuel is provided in two arms above the throat, and the vaporization chamber is communicated with the ejection port. liquid fuel combustion equipment.

Claims (1)

[Claims] In a combustion device consisting of a throat that sucks in and mixes vaporized fuel ejected from a jet port and external air, and a combustion head and a head holder provided above the throat, a vaporization chamber that vaporizes liquid fuel is integrated on the outer periphery of the throat. 1. A liquid fuel combustion device, characterized in that the vaporization chamber is connected to the jet nozzle.