JPS6324335Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a pot-type combustion device.

The applicant has already installed a bottomed pot 3 as shown in Figure 1.
In a combustion device in which a combustion chamber 17 is provided above and fuel and air are sent into the pot 3 for combustion,
A hollow cylindrical ceramic heater 9 disposed close to and facing the inner bottom surface of the bottomed pot 3, and a nozzle 13 for supplying fuel into the ceramic heater 9.
The nozzle 13 is inserted into the ceramic heater 9 leaving a gap 14, and the nozzle 13 is inserted into the ceramic heater 9 leaving a gap 14.
Through holes 5 and 6 are provided in the side wall of the bottomed pot 3 to allow air to be introduced through the ceramic heater 9 and to supply combustion air.
We have proposed a vaporizing pot-type combustion device characterized by using fuel as a means for vaporizing and igniting fuel.

According to this device, since the liquid fuel is supplied into the pot 3 as vaporized fuel, the time from ignition to stable combustion is significantly shortened, and the fire can be extinguished in a short time. However, since this device ignites from the inside of the heater 9 to the tip of the heater 9, good ignition cannot be achieved unless a sufficient amount of air is supplied.
Since a flame is formed at the tip, if a large amount of air is supplied to the gap 14 for the above-mentioned reason, combustion noise becomes a problem.

Therefore, the purpose of the present invention is to provide a wire mesh, for example, at the internal tip of the heater, to promote vaporization combustion and mixing of air, and then to ignite this mixed gas by the red heat of the heater and wire mesh. be.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows a schematic configuration of an embodiment of a vaporizing pot type combustion apparatus according to the present invention. A pot burner 2 is provided inside the device main body 1. This pot burner 2 is the same as the conventional pot-type combustion apparatus in that a combustion chamber 17 is provided above the bottomed pot 3, and a flame stabilizing plate 4 is provided at the inner upper part. Further, the side wall of the bottomed pot 3 is provided with through holes, that is, a primary air hole 5 and a secondary air hole 6.
Air sent into the lower part of the apparatus main body 1 flows into the pot 3 through the primary air hole 5 and the secondary air hole 6.

Furthermore, a hollow cylindrical ceramic heater 9 is attached to a hole penetrating the apparatus main body 1 and the pot 3 from the side through a heater attachment plug 8 which serves as an insulator. This ceramic heater 9 is inserted into the pot 3 in an inclined position and is placed a little apart from the inner bottom surface of the pot 3. Thus, the ceramic heater 9 is substantially thermally and electrically isolated from the device main body 1 and the pot.

The ceramic heater 9 also has a heat generating element 11 made of a tungsten pattern or the like on the front outer periphery near the tip of the nozzle 13. Heat generating element 11
The heater power can be supplied from outside through an electric cord 12.

A nozzle 13 is inserted into the cylindrical ceramic heater 9 leaving a gap 14 around the nozzle 13, and wire meshes 18, 18 are placed at the tip of the nozzle 13. The tip of the nozzle 13 is located in the middle of the ceramic heater 9. From the tip of this nozzle 13, fuel supplied by an external electromagnetic pump 15 is ejected. Also nozzle 13
A part of the air from the blower 7 is supplied to the gap 14 around the spacer through an inverted U-shaped pipe 16 or the like.

In the embodiment configured as described above, when the ceramic heater 9 is energized and fuel is sprayed from the nozzle 13, the fuel receives heat, becomes granular, and then vaporizes, so that the granular fuel flows along the inclination of the heater 9. The fuel then soaks into the red-hot wire meshes 18, 18 and causes ignition, or the vaporized fuel and air are sufficiently mixed through the wire meshes 18, 18, causing instant ignition.
Of course, there is also fuel that ignites at the leading edge of the ceramic heater 9.

Also, before and after ignition, a combustion flame is formed at the tip of the heater 9, but the ejected gas at this time is
18, the combustion noise is very small.

Furthermore, after ignition, the fuel sprayed from the nozzle 13 is promoted to vaporize and increase its concentration by the heat of the ceramic heater 9 and the combustion heat, and passes through the wire meshes 18, 18 together with the air flowing in through the gap 14. It will be supplied into pot 3. The vaporized fuel flowing into the pot 3 rises while being mixed with the primary air from the primary air hole 5, and further comes into contact with the secondary air from the secondary air hole 6 and burns. By the way, the vaporized fuel spouted from the ceramic heater 9 is connected to the wire mesh 1.
8 and 18, the amount of ejection is made uniform.

In this way, in this invention, the wire mesh not only plays the role of the spark source, but also plays the role of rectifying the vaporized fuel and ejecting it uniformly.This improves the ignition characteristics, eliminates the noise of vaporized fuel ejection, and reduces the amount of vaporized fuel ejected. Since the combustion is made uniform, stable combustion can be achieved.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a conventional combustion device, FIG. 2 is a schematic diagram of an embodiment of the vaporizing pot-type combustion device according to the present invention, and FIG. 3 is an enlarged sectional view of a ceramic heater according to an embodiment of the present invention. It is. 1...Device body, 2...Potburner, 3...
Bottomed pot, 5...Primary air hole, 6...Secondary air hole, 7...Blower, 9...Ceramic heater, 1
1... Heat generating element, 13... Nozzle, 14... Gap, 15... Electromagnetic pump, 17... Combustion chamber, 1
8,18...wire mesh.

Claims (1)

[Scope of utility model registration request] In a combustion device that provides a combustion chamber above a bottomed pot and sends fuel and air into the pot for combustion, a hollow cylindrical ceramic heater is arranged close to and opposite to the inner bottom surface of the bottomed pot; and a nozzle for supplying fuel into the interior of the ceramic heater, the nozzle is inserted into the interior of the ceramic heater leaving a gap so that air can be introduced through the gap, and the side wall of the bottomed pot A through hole is provided for supplying combustion air to the ceramic heater, and a wire mesh is placed at the nozzle tip position inside the ceramic heater, and the ceramic heater and the wire mesh are used as fuel ignition means, and after ignition, the ceramic heater is used as a vaporization means. A vaporizing pot-type combustion device characterized by: