JPH0429205Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a pot-type oil combustor that is supplied with fuel by a supply nozzle.

[Conventional technology]

There is a combustor which has a fuel supply pipe in the side wall of the pot and supplies fuel directly into the pot through a fuel nozzle to improve ignition and extinguishing performance. With this configuration, if the temperature at the bottom of the pot becomes abnormally high, the dropped fuel becomes spherical and scatters, creating a condition in which stable fuel vaporization cannot be achieved. In addition, in this state, the easily vaporized components vaporize, so the fuel tends to turn into tar, and tar adhering to the inside of the pot causes deterioration in ignition/extinguishing performance and incomplete combustion.

As a countermeasure for this, it has been proposed to attach a mat of silica cloth to the bottom of the pot, apply an inorganic paint, or add a finely uneven surface to the bottom of the pot.

[The problem that the idea attempts to solve]

By the way, mats made of silica cloth are expensive, and the tip of the refueling nozzle is located close to the side wall of the pot, and there is a risk that if the fuel vaporizes inside, it will turn into tar and clog the nozzle. Large silica cloth mats are used throughout, which increases costs. Furthermore, the silica cloth that is rapidly cooled by the dripping fuel may fall apart after a short period of use, and if the mat of the silica cloth deforms locally and floats up, the effect of installing the silica cloth will be lost. It was something to put away.

On the other hand, pots that are coated with inorganic paint on the bottom of the pot or scratched on the surface of the material to create a finely uneven surface are much more durable than cross mats, but do not cause the dropped fuel to become spherical. The effect of preventing scattering was inferior to that of cross mats, and the usable conditions were limited.

[Means to solve the problem]

This idea proposes an inexpensive structure in which the bottom of the pot can be reliably cooled by the dripping fuel and prevent it from becoming spherical and scattering. 1, a fuel nozzle 3 whose tip protrudes into the pot 1, and an electromagnetic pump 4 that supplies fuel to the fuel nozzle 3. a flat section 6 constituting a vaporizing section 6';
The tip of the refueling nozzle 3 is located above the inclined portion 7, and the inclined portion 7 is located below the tip of the refueling nozzle 3.
Apply an inorganic paint or adhesive 5 to
Further, an inorganic paint or adhesive 5 is continuously applied to the flat part 6 from the inclined part 7, and a silica cloth 8 is fixed to the flat part 6 on the bottom surface of the pot 1.

Furthermore, in order to apply the inorganic paint or adhesive 5 to the inclined part 7, a recessed part 9 is formed in the inclined part 7 below the tip of the refueling nozzle 3, which continues to the central vaporizing part 6'.
The recess 9 is coated with an inorganic paint or adhesive 5.

[Effect]

In this invention, an inorganic paint or adhesive 5 is applied to the sloped part 7 of the bottom of the pot 1 where fuel is dripped from the fuel nozzle 3, so that the surface of the adhesive 5 has a temperature higher than that of the metal plate that forms the bottom of the pot 1. is low;
Furthermore, even if the temperature of the surface on which the fuel is dropped drops, since it is an inorganic material, heat conduction is poor, and the temperature rise due to heat transfer from the surroundings is very small.

For this reason, even if the metal plate forming the bottom of the pot is at an abnormally high temperature, the dropped fuel will flow toward the bottom of the pot without becoming spherical and scattering. Further, the vaporizing section 6' at the bottom of the pot is also coated with an inorganic paint or adhesive 5 to fix the silica cloth 8, as is the case with the fuel dripping section, so that stable fuel vaporization can be carried out.

On the other hand, the size of the mat of the silica cloth 8 does not have to correspond to the dripping part of the refueling nozzle 3, so it can be small, and since it is attached to the flat part 6, it can be securely brought into close contact with the bottom of the pot without floating up. Improves durability.

Additionally, an inorganic paint or adhesive 5 is applied to the inclined portion 7 to prevent the silica cloth 8 from moving.
Workability is good because it is used as is.

In addition, when applying a thick layer of inorganic paint or adhesive 5 on the sloped portion 7 to enhance its effectiveness, forming a recess 9 on the sloped portion 7 where the fuel drips will prevent the inorganic paint or adhesive 5 from spreading. The fuel is not applied to the necessary areas, and the fuel does not flow around the adhesive 5 unlike when the adhesive 5 is thickly applied.

〔Example〕

To explain with reference to figures showing an embodiment, 1 is a pot installed in an air passage 10 through which combustion air is supplied;
Reference numeral 1' designates an air hole formed in the side wall of pot 1, and reference numeral 2 designates a control plate installed within pot 1 to improve mixing of vaporized gas and air and to stabilize combustion. 3 is a refueling nozzle whose tip protrudes into pot 1; 4 is an electromagnetic pump; 11 is an oil tank;
1 fuel is supplied into the pot 1 from a fuel nozzle 3 with its flow rate controlled by an electromagnetic pump 4. 1
2 is a blower fan that supplies combustion air to the air passage 10.

Reference numeral 6 denotes a flat part on the bottom of the pot, and 7 denotes an inclined part formed around the flat part 6, and the tip of the fuel nozzle 3 is positioned above the inclined part 7. An inorganic adhesive 5 called Betatsuku (trade name) is applied to the inclined portion 7 below the tip of the refueling nozzle 3.

Further, an inorganic adhesive 5 is applied to the flat part 6 continuously from the inclined part 7, and a silica cloth 8 attached to the entire flat part 6 is fixed, and the vaporized part 6' is fixed by the silica cloth 8. It consists of

Reference numeral 9 denotes a recess formed in the inclined part 7 following the vaporization part 6', and an inorganic paint or adhesive 5 is applied to the recess 9, and the tip of the oil supply nozzle 3 is located above the recess 9. 13 is an inorganic adhesive 5
This is a temperature detector attached to the bottom surface of the sloped portion 7 where pot bottom surface temperature is not coated, making it possible to control the burner using the bottom surface temperature of the pot.

[Explanation of effects]

In this design, an inorganic paint or adhesive is applied instead of silica cloth to the surface on which the fuel is initially dripped, which is unusual in that it prevents the spherical fuel from scattering when the bottom of the pot is at an abnormally high temperature. This prevents the fuel from becoming spheroidized and allows it to flow more easily. Therefore, even if the temperature at the bottom of the pot was higher than the set value, the fuel vaporized well and combustion became stable, preventing incomplete combustion.

In addition, when the silica cross mat 8 was placed on the surface where fuel was dripped, the temperature change during the fuel dripping weakened the durability of the fibers, but the paint and adhesive 5 have excellent durability and can be used for a long period of time. It became.

On the other hand, it is difficult to uniformly apply the inorganic paint or adhesive 5 to the entire wide vaporized part 6' at the center of the bottom of the pot 1, and to apply it to a constant thickness on a smooth surface. By using the cross mat 8, the area used for the cross mat 8 can be reduced, and the adhesive 5 applied to the inclined portion 7 can be used as is to fix the cross mat 8, making it easy to manufacture.

Furthermore, when applying an inorganic paint or adhesive 5 to the inclined portion 7, it is necessary to increase the film thickness in order to obtain good performance. The adhesive 5 can be easily applied.

[Brief explanation of drawings]

FIG. 1 is a sectional view of this device, and FIG. 2 is a plan view thereof. 1...Pot, 1'...Pot side wall air hole, 2
...Control board, 3...Refueling nozzle, 4...Electromagnetic pump, 5...Inorganic paint or adhesive, 6...
...Flat part, 7... Inclined part, 8... Silica cloth,
9... Concavity.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A pot 1 with an air hole 1' in the side wall, a control board 2 installed inside the pot 1, a refueling nozzle 3 whose tip protrudes into the pot 1, and a refueling nozzle. 3
In an oil combustor equipped with an electromagnetic pump 4 for supplying fuel to
and a sloped part 7 around the flat part 6 that faces the flat part 6, the tip of the refueling nozzle 3 is located above the sloped part 7, and the tip of the supply nozzle 3 is located below the tip of the supply nozzle 3. An inorganic paint or adhesive 5 is applied to the inclined part 7, and the inclined part 7 is
Continuously apply inorganic paint or adhesive 5
This pot-type oil combustor is characterized in that the flat part 6 of the pot 1 is also painted, and silica cloth 8 is fixed to the flat part 6 of the bottom of the pot 1. (2) A recess 9 is formed in the inclined portion 7 below the tip of the supply nozzle 3, which continues to the central vaporization portion 6', and an inorganic paint or adhesive 5 is applied to the recess 9. The pot-type oil combustor described in item 1.