JPS593228Y2 - liquid fuel combustion equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a liquid fuel combustion device, and its purpose is to improve combustion characteristics.

In order to achieve this objective, the present invention provides a removable baffle above the inside of a cylindrical combustion tube with a bottom, and a burner ring is provided at the lower end of this baffle. An embodiment will be described based on the accompanying drawings.

In the figure, 1 is a cylindrical combustion tube with a bottom, and a water tank 2 is integrally provided on the outer wall of this combustion tube 1.
At approximately the center a, a middle cylinder 3 is provided with a wall surface 3a provided with a plurality of air ejection holes 3b.

The middle cylinder 3 has a cylindrical shape, and the air jet holes 3b are provided in the cylindrical wall at equal intervals of 90' in the vertical direction, with openings aligned in the same direction.

Therefore, when air is supplied into the middle cylinder 3 from a blower (not shown) through the wind cylinder 4 as shown by the arrow, the air coming out of the air outlet 3b flows in the tangential direction of the middle cylinder 3. As a result, an airflow swirling around the inner cylinder 3 is generated.

On the other hand, the combustion tube 1 and the water tank 2 are also cylindrical, and an opening 1b is provided at the lower side wall thereof, and a liquid fuel injection nozzle 5 and a spark plug 6 are connected to the combustion tube 1 through this opening 1b. It is coming within.

These liquid fuel jet nozzles 5 and spark plugs 6
is configured to be covered by a cover 7.

The liquid fuel jet nozzle 5 jets liquid fuel, such as oil, into the combustion cylinder 1 from its spout 5a, and this oil is supplied via a pipe 8 and an electromagnetic pump (not shown). It has become.

On the other hand, a baffle 9 is removably provided inside the combustion tube 1 to increase heat exchange efficiency to the water tank 2. In this baffle 9, three plates 9a, 9b, and 9C allow exhaust gas to flow in a spiral shape as shown by an arrow. It forms the exhaust gas path.

Further, an annular burner ring 10 is detachably provided at the lower end of the baffle 9.
0 is inclined downward toward the center of the combustion tube 1.

Note that 2a in this figure is the water supply port of the water tank 2, and 2b is its drain port.

Further, 1C is an exhaust port of the combustion tube 1.

In the above configuration, when the blower is started, air is introduced into the middle cylinder 3 through the wind cylinder 4, and then this air is blown out from the air jet hole 3b of the middle cylinder 3 in the tangential direction thereof, and thereby the air blows out of the middle cylinder 3. A swirling upward flow that swirls around the area is generated.

At the same time, the jet nozzle 5a of the liquid fuel jet nozzle 5
A mist of petroleum is ejected from the tank and mixes with the swirling upward flow to form a mixture.

In this state, the mist of petroleum ejected from the spout 5a is ignited by the spark plug 6, and after a few seconds after this flame is transferred to the air-fuel mixture, blue flame combustion occurs in the upper part of the middle cylinder 3. be exposed.

Thereafter, even if the energization of the spark plug 3 is cut off, the atomized petroleum ejected from the ejection port 5a is vaporized, mixed with the swirling flow to generate an air-fuel mixture, and this is combusted.

Then, the exhaust gas after combustion is discharged through the hole 10 of the burner ring 10.
From a, the baffle 9 spirally rises as shown by the arrow to reach the exhaust port 1C.

In this case, since the baffle 9 is provided, the heat exchange efficiency of the water tank 2 is naturally increased, but in the present invention, the heat exchange efficiency is also increased from the following points.

That is, since the burner ring 10 is provided at the lower end of the baffle 9, the temperature around the middle cylinder 3 becomes high, so that the oil ejected from the liquid fuel injection nozzle 5 is smoothly vaporized.

As a result, its combustion characteristics are extremely high, and the heat exchange efficiency is thereby also extremely high.

Further, in the present invention, since the burner link 10 is provided on the baffle 9, the following effects are also produced.

That is, since the burner ring 10 also fully functions as a component of the baffle 9, the cost can be reduced because parts can be shared.

Furthermore, since the baffle 9 and the burner ring 10 are exposed to high temperatures, they undergo severe thermal deterioration and must be replaced, but this can be done at the same time, which is extremely convenient.

In addition, since the burner ring is tilted downward toward the center of the combustion tube, the flow of the swirling air-fuel mixture and combustion exhaust gas is directed downward into the combustion chamber, and some of it returns to the combustion chamber as a circulating flow, increasing the temperature within the combustion chamber. It is effective in raising the temperature and promoting complete combustion.

As described above, in the present invention, a middle cylinder is installed upright on the bottom surface of a bottomed cylindrical combustion cylinder, a baffle is provided above the inside of this combustion cylinder, and a burner is attached to the middle cylinder at the lower end of this baffle. The air jetted from the air jet hole in the middle cylinder and the fuel spouted from the liquid fuel jet nozzle swirl vigorously in the narrow space under the burner ring, resulting in a well-mixed mixture. The provision of this burner ring makes it easy for hot air to get trapped under it, resulting in a high temperature, which makes it easier to burn the air-fuel mixture, resulting in an extremely good combustion condition.

Furthermore, since the burner ring is provided on the baffle, it is advantageous that attachment/detachment, repair, etc. can be performed outside the combustion cylinder, rather than fixing the burner ring to the combustion cylinder wall.

[Brief explanation of drawings]

The figure is a sectional view of a liquid fuel combustion device according to an embodiment of the present invention. 1... Combustion cylinder, 2... Water tank, 3.
...Middle tube, 4...Wind barrel, 5...
Liquid fuel injection nozzle, 9...Baffle, 10.
...burner ring.

Claims (2)

[Scope of utility model registration request] (1) A cylindrical combustion tube with a bottom, a liquid fuel injection nozzle with a spout facing into the combustion tube, and a plurality of liquid fuel injection nozzles erected approximately in the center of the bottom of the combustion tube, and a plurality of liquid fuel injection nozzles on the wall surface of the combustion tube. The interior of the combustion cylinder is equipped with a middle cylinder provided so that the air ejected from the air blowing hole circulates inside the combustion cylinder, and a blower that supplies air into the middle cylinder through a wind cylinder. A liquid fuel combustion device that includes a removable baffle above the middle cylinder and an annular burner ring at the lower end of the baffle. (2) The liquid fuel combustion device according to claim 1, wherein the burner ring is tilted downward toward the center of the combustion cylinder.