JPS6383514A - Liquid fuel combustion apparatus - Google Patents

Abstract

PURPOSE:To lower the manufacturing cost and to reduce in size for a burner assembly, in the title combustion apparatus, by providing a vaporizing chamber on the outer peripheral portion of the throat where vaporized fuel is mixed with air. CONSTITUTION:A vaporizing chamber 21 is a hollow cylinder having a bottom, monolithically built in a throat 4, surrounding it. Its upper opening is closed with a top cover 22. A liquid fuel fed by a pump 7 through an oil feeding pipe 8 is fed into the vaporizing chamber 21 from a fuel feeding port 9. The vaporizing chamber 21 is preheated by an electric heater 2, so that the fed liquid fuel is vaporized in a moment of time. When the internal pressure of a vaporizing chamber is increased by expansion of fuel by vaporing, the vaporized fuel is ejected into the throat 4 from a nozzle 3 via an introducing pipe 23. Air is sucked by the suction force of the fuel from an opening 13 at the bottom of the throat 4, and it is mixed with the vaporized fuel, becoming a mixed combustion gas, going up to a gap 14, being ignited properly, forming flames 15. Since the vaporizing chamber is provided around the throat where the vaporized fuel is mixed with the air, the manufacturing cost for a burner assembly is decreased, the size for a burner assembly and a vaporizing chamber are decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid fuel combustion device that vaporizes and burns liquid fuel.

[Conventional technology]

FIG. 3 is a sectional view of a main part of a conventional liquid fuel combustion device.

In the figure, 1 is preheated to 200°C to 30°C by electric heating element 2.
A vaporization chamber heated to a temperature of 0° C.; 3 a nozzle for ejecting the vaporized fuel vaporized in the vaporization chamber 1; 4 a throat for receiving the vaporized fuel ejected from the nozzle 3; 5 a burner formed of a wire mesh or the like. The head is fixed on the burner bottom wall 6 provided at the top of the throat 40.

In the above, vaporization chamber 1. ri electric heating element, a vaporization part consisting of a nozzle 3, and a throat 4. The entire combustion part consisting of the burner head 5 is manufactured as a separate object.

) is a pump that connects the oil tank 12 through the oil supply pipe 8.
The liquid fuel inside is supplied to the vaporization chamber 1 from the fuel supply port 9.

10 is a thermistor that detects the temperature of the vaporization chamber, and the temperature of the vaporization chamber is changed to the temperature of if by this thermistor f[j
Be it.

11 opens and closes the nozzle 3, and when the nozzle 3 is closed, it forms an H path that communicates the inside of the vaporizing chamber 1 with the inside of the oil tank 12, and when the nozzle 3 is open, it closes it. This is a solenoid valve that forms a valve structure like this.

Next, the operation will be explained. When the vaporization chamber 1 reaches a temperature at which the fuel can be kept in a sufficiently vaporized state by the electric heating element 2, the fuel is activated, the nozzle 3 is opened, and the fuel is vaporized through the fuel supply pipe 8! The fuel supplied into the throat 11 is vaporized and ejected toward the throat 4.

At this time, air is sucked through the lower opening 13 of the throat 4 by the jetting force of the vaporized fuel, and the air is mixed in the throat 4 and reaches the burner head 5, where it is appropriately ignited and causes a flame 15.
form.

[Problem that the invention seeks to solve]

In the conventional combustion device as described above, the combustion part having the throat 4 and the burner head 5 and the vaporization part having the vaporization chamber 1 and the nozzle 3 have completely separate element configurations, so the cost is relatively high. At the same time as it becomes a thing,
There were problems such as large space loss.

The present invention was made to solve the above-mentioned conventional problems, and an object of the present invention is 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 has a vaporization chamber provided on the outer periphery of a throat that sucks and mixes vaporized fuel and air.

[Effect]

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

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In FIG. 1, reference numeral 21 denotes a vaporization chamber, which has a hollow annular shape with a bottom and is integrally provided around the outer periphery of the throat 4, and its upper opening is closed by a lid body 22.

This pair of lids 22 also serves as the bottom wall of the burner, on which the burner head 5 is placed and fixed.

Reference numeral 23 denotes a vaporized fuel outlet pipe, one end of which is connected to the vaporization chamber 21 and the other end connected to the nozzle 3. In addition, the same symbols in the figures are the same.
or a corresponding portion.

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

The liquid fuel sent through the refueling vibe 8 by the pump is heated from the fuel supply port 9 to 200°C to 3°C by the electric heating element 2 in advance.
When entering the vaporization chamber 21 heated to 00° C., it is instantaneously vaporized.

When the internal pressure increases due to vaporization and expansion, the vaporized fuel is ejected from the nozzle 3 into the throat 4 through the outlet 'ff23, and the ejection force mixes with the air sucked from the lower opening 13 of the throat 4 to form an air-fuel mixture. , reaches the space 14 and is appropriately ignited to form a flame 15.

〔Effect of the invention〕

As described above, according to the present invention, since the vaporization chamber is provided around the outer circumference of the throat that sucks and mixes vaporized fuel and air, the cost of the combustion device can be reduced and the space of the combustion section and the vaporization section can be saved. It has the effect of being measured.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a liquid fuel combustion apparatus showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line II--II in FIG. 1, and FIG. 3 is a sectional view of a conventional example. In the figure, 3 is a nozzle, 4 is a throat, 21 is a vaporization chamber, 5 is a combustion burner head, and 23 is a vaporized fuel outlet pipe. Agent Masu Oiwa #t (2 others) Sai II! 1 Fang 20 Part 3 Written amendment (voluntary) 2. Name of the invention Liquid fuel combustion device 3. Relationship with the person making the amendment Patent applicant address 2-2-3 Marunouchi, Chiyoda-ku, Tokyo. Name (601) Mitsubishi Electric Co., Ltd. Representative Moriya Shiki 4, Agent address 2-2-3 Marunouchi, Chiyoda-ku, Tokyo Address of the drawing to be amended Contents of the amendment

Claims (2)

[Claims] (1) In a liquid fuel combustion device in which a combustion burner head is provided at the top of a throat that sucks in and mixes vaporized fuel ejected from a nozzle and external air, a vaporization chamber that vaporizes the liquid fuel is provided on the outer periphery of the throat. A liquid fuel combustion device characterized in that the vaporized fuel vaporized in the vaporization chamber is guided to the nozzle. (2) The liquid fuel combustion device according to claim (1), wherein the vaporization chamber is provided integrally with the throat.