JP3267172B2 - Combustion equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus for vaporizing a liquid fuel and ejecting the vaporized gas from a nozzle for combustion.

[0002]

2. Description of the Related Art Various types of combustion apparatuses of this type have been proposed in the past, some of which burn liquid fuel gas obtained by vaporizing gas or kerosene. Such a combustion device is configured as shown in FIG. Hereinafter, a combustion apparatus for burning this liquid fuel gas will be described as an example.

[0003] That is, first, the fuel in the tank 26 is supplied to a vaporizing section 28 maintained at a high temperature by a pump 27. The supplied fuel is a vaporization promoting material (not shown) such as a ceramic porous body or a wire mesh provided in the vaporization section 28.
Then, the gas is vaporized to become a vaporized gas and has a high pressure in the vaporizing section 28, and is ejected from the nozzle 29 in the horizontal direction. The fuel ejected from the nozzle 29 is ejected into a mixing pipe 30 provided at a position downstream of the vaporizing section 28 while sucking primary air by an ejector effect, and is mixed there.
Is supplied to a burner portion 31 having a linear shape integrated therewith, and is burned there. The generated combustion exhaust gas is guided upward by a combustion tube 32 disposed so as to cover the periphery of the burner portion 31, mixed with a room air flow from a blower 34 by a duct 33 covering the combustion tube 32, and heated. It is discharged as wind and used for heating. When the fuel supply amount is adjusted by changing the drive frequency or applied voltage of the pump 27, the primary air amount increases and decreases accordingly, and the combustion amount is changed while the fuel-to-air ratio is kept constant. Is available.

[0004]

However, such a conventional combustion apparatus has a problem in that when a defective kerosene such as a deteriorated oil which has been stored and oxidized for a long period of time or a different kind of oil mixed with a different component is used as a fuel, the vaporization unit is not used. The problem is that tar is generated in the porous portion of the vaporization promoting material which vaporizes the fuel of No. 28 to cause clogging, resulting in poor combustion due to poor vaporization, and further clogging causes poor combustion by the clogging itself. was there.

For example, when clogging occurs and poor vaporization progresses, the internal pressure of the vaporizing section 28 does not become too high and the nozzle 34
And the fuel is ejected from the nozzle 29 as a liquid, the ejector effect by the ejection is weakened, the primary air suction amount is reduced, and the combustion state of the burner 31 is deteriorated. It produces pulse burning, odor, soot, carbon monoxide and eventually misfires.

[0006] Further, as the clogging of the vaporization accelerating material further proceeds, the clogging of the vaporization accelerating material particularly near the fuel inlet of the vaporization section 28 hinders the fuel from entering the vaporization section 28, and the pump 27 The fuel entering the vaporizing section 28, that is, the amount of vaporization decreases with respect to the supply power of the fuel, and the amount of combustion decreases even if the internal pressure of the vaporizing section 28 increases. It gives off odor and eventually misfires.

Here, whether the cause of the final defective state is caused by poor vaporization or clogging depends on temperature conditions such as temperature distribution applied to the vaporization promoting material, pore diameter and pore size of the vaporization promoting material. In general, the temperature of the vaporization accelerator is low, and the former is poorly vaporized.If the temperature is high, the latter is clogged, and the pore diameter of the vaporization accelerator is large and the porosity is large and coarse. In some cases, due to poor vaporization, the former is liable to be clogged with the latter, which has a small pore size (the size of the space partitioned by the vaporization promoting material) and a small porosity (space ratio of the vaporization promoting material).

[0008] The combustion apparatus detects an abnormality with a combustion sensor or the like and stops the operation of the apparatus before a odor or a misfire phenomenon that occurs due to poor vaporization or poor combustion due to clogging as described above. Thus, clogging of the vaporization promoting material due to tar generation of the vaporization promotion material has a problem that the life of the device is affected.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to suppress clogging due to tar formation of a vaporization promoting material and prevent poor vaporization so that good combustion can be performed. .

[0010]

In order to solve the above problems, the present invention provides a fuel supply means for supplying fuel, a vaporizer for vaporizing the supplied fuel, a heater for heating the vaporizer, and the vaporizer. A nozzle for ejecting gas vaporized in the part, and a burner unit for burning the gas ejected from the nozzle, a columnar cylindrical vaporization chamber for vaporizing fuel is provided in the vaporization part, and the vaporization chamber is provided in the vaporization chamber. Is provided with a substantially cylindrical brush-shaped vaporizing element formed by interposing a large number of flocking lines between a plurality of axes and twisting the axes, and the inner diameter of the vaporizing chamber on the nozzle side is the same as the vaporizing chamber on the fuel inlet side. The inner diameter is smaller than the inner diameter, and the flocked line on the nozzle side of the vaporizing element is made dense to improve the close contact with the vaporizing chamber.

The fuel that has entered the vaporization chamber is vaporized and is ejected from the nozzle and burned. If defective fuel is mixed at that time, the fuel that has entered from the entrance first reaches the nozzle in the process of reaching the nozzle. At this time, the defective components of the fuel together with the vaporized gas of the normal fuel flow straight from the entrance of the vaporization chamber to the nozzle side as insufficiently vaporized fuel vaporized gas. It touches many flocking lines and is collected as tar components.

Further, even if a part of the insufficiently vaporized fuel vaporized gas flows to the nozzle side without being collected by the vaporizing element, the inner diameter of the vaporizing chamber on the nozzle side is equal to that of the vaporizing chamber on the fuel inlet side. Because it is smaller than the inner diameter and has a denser flocking line, insufficiently vaporized fuel vaporization gas is promoted to mix with normal fuel vaporization gas, finer grains are formed, and at the same time, the temperature is high. Touching the flocked line of the vaporizing element, which has become high temperature in close contact with the vaporizing chamber on the nozzle side, promotes vaporization of insufficiently vaporized fuel vaporized gas. Then, the vaporized gas reaching the nozzle hardly contains the insufficiently vaporized fuel vaporized gas, and even if it is contained, the vaporized gas is finely divided. Becomes stable.

[0013] Further, the tar component accumulates on the flocking line,
When the straight flow of the fuel vaporized gas is obstructed, the flow of the vaporized gas passes through a spiral space portion without a flocking line formed by twisting the flocking line between the axes. The insufficiently vaporized fuel vaporized gas of the defective kerosene passes through a long spiral path formed by the wall of the flocked line to which the tar component is attached, and the tar component attached to the flocked line becomes a nucleus during the course of the evaporation. A sufficient amount of fuel vaporized gas will be collected. Therefore, until the spiral space formed by the wall of the flock line is closed with the tar component, the vaporized gas reaches the nozzle without containing insufficiently vaporized fuel vaporized gas, so that the vaporized gas ejected from the nozzle is stable. And the combustion becomes stable.

[0014] The life of the vaporizing element depends on whether the vaporized gas of the former flows straight and the tar component touches and collects on a large number of flocked lines of the vaporized element, and the spiral space formed by the wall of the flocked line. This is a period of time until the tar component is blocked by the tar component, and the space for storing the tar component is wide in two stages, so that the life can be extended.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a fuel supply means for supplying fuel, a vaporizing section for vaporizing the supplied fuel, a heater for heating the vaporizing section, and jetting the gas vaporized by the vaporizing section. A nozzle and a burner for burning gas ejected from the nozzle are provided, and a columnar cylindrical vaporizing chamber for vaporizing fuel is disposed in the vaporizing section, and the vaporizing chamber is provided between a plurality of axes. A substantially cylindrical brush-shaped vaporizing element formed by interposing a large number of flocked lines and twisting the axis is provided, and the inner diameter of the vaporizing chamber on the nozzle side is made smaller than the inner diameter of the vaporizing chamber on the fuel inlet side. Has a configuration in which the flocked line on the nozzle side is made dense and the adhesion to the vaporization chamber is improved.

The fuel that has entered the vaporization chamber is vaporized and is ejected from the nozzle and burned. If defective fuel is mixed at that time, the fuel that has entered from the entrance first reaches the nozzle in the process of reaching the nozzle. At this time, the defective components of the fuel together with the vaporized gas of the normal fuel flow straight from the entrance of the vaporization chamber to the nozzle side as insufficiently vaporized fuel vaporized gas. It touches many flocking lines and is collected as tar components.

Further, even if a part of the insufficiently vaporized fuel vaporized gas flows to the nozzle side without being collected by the vaporizing element, the inner diameter of the vaporizing chamber on the nozzle side is equal to the vaporizing chamber on the fuel inlet side. Because the flocked line is denser than the inner diameter of the fuel, the insufficiently vaporized fuel vaporization gas is promoted to mix with the normal fuel vaporization gas, and finer particles are formed. By touching the flocked line of the vaporizing element that has become hot in close contact with the vaporizing chamber on the nozzle side, the insufficiently vaporized fuel vaporized gas is promoted to vaporize. Then, the vaporized gas reaching the nozzle hardly contains the insufficiently vaporized fuel vaporized gas, and even if it is contained, the vaporized gas is finely divided. Becomes stable.

Further, when the tar component accumulates in the flocked line and the straight flow of the fuel vaporized gas is hindered, the flow of the vaporized gas is generated by twisting the flocked line between the axis and the axis. Not to go through a spiral space. The insufficiently vaporized fuel vaporized gas of the defective kerosene passes through a long spiral path formed by the wall of the flocked line to which the tar component is attached, and the tar component attached to the flocked line becomes a nucleus during the course of the evaporation. A sufficient amount of fuel vaporized gas will be collected. Therefore, until the spiral space formed by the wall of the flock line is closed with the tar component, the vaporized gas reaches the nozzle without containing the insufficiently vaporized fuel vaporized gas, so that the vaporized gas ejected from the nozzle is stable. And the combustion becomes stable.

The life of the vaporizing element depends on whether the above-mentioned vaporized gas flows straight and the tar component touches and collects a number of flocking lines of the vaporizing element, and a spiral space formed by the wall of the flocking line described later. Until it is blocked by the tar component, and since the space where the tar component accumulates is large in two stages, the life can be extended.

Further, the outer diameter of the vaporizing element formed by interposing a large number of flocking lines between a plurality of axes and twisting the axes easily varies, and it is difficult to maintain close contact with the vaporizing chamber.
As a result, the vaporization of the fuel and tar suppression tend to fluctuate without increasing the temperature of the vaporizing element itself. Although it is difficult to insert the element, the inside diameter of the vaporization chamber on the nozzle side is smaller than the inside diameter of the vaporization chamber on the fuel inlet side, so that the fuel entrance side of the vaporization chamber is easy to insert and is guided by that part. Therefore, the insertion of the nozzle side of the vaporization chamber is not so difficult.

The start position of the flock line of the vaporizing element on the nozzle side and the position of the end of the vaporization chamber are arranged so as to overlap with each other, so that the flock line of the vaporization element closely adheres to the vaporization chamber on the nozzle side. In addition, the flocked line is made dense.

As described above, the life of the vaporizing element is determined by the time during which the vaporized gas flows straight and the tar component is touched and collected by a large number of the flocking lines of the vaporizing element, and the spiral formed by the wall of the flocking line. This is a period until the space in the shape of the block is closed by the tar component, and the space for storing the tar component is large in two stages, so that the life can be extended.

In addition, when a part of the insufficiently vaporized fuel vaporized gas flows to the nozzle side without being collected by the vaporizing element, the start position of the flocking line of the vaporizing element on the nozzle side and the end of the vaporizing chamber. The positions of the parts are arranged so as to overlap, and the flocked line of the vaporization element is made to be in close contact with the vaporization chamber on the nozzle side and the flocked line is dense, so in the part where the flocked line is dense As the atomization progresses, the insufficiently vaporized fuel vaporized gas is promoted to mix with the vaporized gas of normal fuel, and at the same time, becomes a high temperature vaporizing element in close contact with the high temperature nozzle side vaporizing chamber. Touching the flocking line, insufficiently vaporized fuel vaporized gas will be promoted to vaporize. Then, the vaporized gas reaching the nozzle hardly contains the insufficiently vaporized fuel vaporized gas, and even if it is contained, the vaporized gas is finely divided. Becomes stable.

Furthermore, the implanted size of the flocking line of the vaporizing element formed by interposing a large number of flocking lines between a plurality of axes and twisting the axes is apt to fluctuate, and it is difficult to maintain close contact with the vaporizing chamber. However, the fuel vaporization and tar suppression are likely to vary without increasing the pressure, but since the flocking line start position of the vaporization element on the nozzle side and the position of the end of the vaporization chamber overlap each other, the nozzle side The flocked line of the vaporizing element can always be brought into close contact with the vaporizing chamber, and its performance can be stabilized.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 2 is a configuration diagram of a hot air heater using a combustion apparatus according to Embodiment 1 of the present invention.

In FIG. 2, reference numeral 1 denotes a main body case, on which a tank 2 for holding liquid fuel is provided on a lower side thereof, and a detachable cartridge tank 3 is provided above the tank 2.
Reference numeral 4 denotes a pump mounted on the upper surface of the tank 2. The pump 4 extends from an upper end of the pump to supply fuel to the combustion device 6. Reference numeral 7 denotes a combustion tube for guiding the combustion exhaust gas from the combustion device 6 upward, and a blower 8 for taking in and sending out the indoor air flow is disposed at the back of the combustion tube. Reference numeral 9 denotes a duct that mixes the combustion exhaust gas from the combustion tube 7 with the indoor air flow to generate hot air. A control unit 10 controls the combustion of the combustion device 6 and the blower 8, and controls the pump 4 and the blower 8 in a predetermined sequence based on an operation condition signal input from the operation unit. .

FIG. 1 is a configuration diagram of a vaporization chamber of a combustion apparatus according to Embodiment 1 of the present invention. 1, the configuration of the combustion device 6 will be described with reference to FIG. Reference numeral 11 denotes a vaporizing section, on which a circular burner receiving seat 12 is provided.
2, a nozzle 13 is arranged so as to be located substantially at the center of the nozzle 2, an opening 14 for primary air intake for supplying combustion air is provided between the burner receiving seat 12 and the nozzle 13, and
A cylindrical vaporizing chamber 16 is formed integrally with a cylindrical vaporizing chamber 16 extending in an outer peripheral direction through a communication port 15 communicating with the nozzle 13.

The vaporizing chamber 16 is provided with a cylindrical brush-shaped vaporizing element 19 formed by sandwiching a large number of flocking lines 18 between a plurality of axes 17 and twisting the axes 17. The inner diameter of the vaporization chamber 16 on the nozzle 13 side is smaller than the inner diameter of the vaporization chamber 16 on the fuel inlet side. For example, the inner diameter A of the vaporization chamber 16 on the nozzle 13 side is the inner diameter B of the vaporization chamber 16 on the fuel inlet side. 10% to 20% smaller than the above, the adhesion of the vaporizing element 19 on the nozzle 13 side is improved, and the flocking line 18 is dense. A fuel supply port 20 for supplying fuel is provided in the vaporization chamber 16 on the opposite side of the nozzle 13. Further, a heater 21 is disposed along the lower surface of the burner receiving seat 12 on the opposite side of the vaporizing chamber 16 of the vaporizing section 11.

Numeral 22 denotes a bottomless cylindrical mixing tube mounted on the burner receiving seat 12 so as to be located above the nozzle 13, facing the nozzle 13, and being connected to the fuel vaporized gas ejected from the nozzle 13. The fuel gas is mixed with the primary air sucked by the ejector effect by the ejection of the fuel gas. Numeral 23 denotes a cantilevered burner portion which is overlapped and covered with the burner receiving seat 12 from the upper opening side so as to cover the mixing tube 21, and has a large number of flame holes 23A formed in the lower peripheral wall. 24
Reference numeral 25 denotes an upwardly tapered burner ring attached to the burner receiving seat 12 so as to surround the outer peripheral portion of the flame hole 23A. Reference numeral 25 denotes a heat receiving portion formed in the burner receiving seat 12.

Next, the operation will be described. In the above configuration, the liquid fuel supplied from the cartridge tank 3 to the tank 2 so as to maintain a constant oil level is sucked up from the tank 2 by the pump 4, and is supplied to the combustion device 6 through the oil supply pipe 5 and the oil supply port 19. It is sent to the vaporization chamber 16. The sent fuel is vaporized in the vaporization chamber 16 maintained at a predetermined temperature or higher by the heater 21 and becomes a high-pressure fuel gas, which is ejected from the nozzle 13. The mixture is mixed in the mixing pipe 22 provided on the downstream side and supplied to the burner section 23, and is ejected from the flame hole 23A and burned. Then, the generated combustion exhaust gas is supplied to a combustion cylinder 7.
, And is mixed with the indoor airflow from the blower 8 in the duct 9, discharged as warm air, and used for heating. The control unit 10 controls the heater 21, the pump 4, the blower 8, and the like in a predetermined sequence based on the conditions set by the operation unit to start, stop,
Also, operation control such as variable combustion amount is performed.

The combustion in the burner section 23 will be described. The fuel vaporized gas ejected from the nozzle 13 flows into a mixing pipe 22 provided on the downstream side of the vaporization chamber 16 while sucking primary air by an ejector effect, and is mixed therein. It is discharged into the portion 23 and flows back around the outer periphery of the mixing tube 22, and is ejected from a large number of flame holes 23A provided in a peripheral wall below the burner portion 23 and burns.

At this time, the mixed gas returns to the burner section 23 and flows around the mixing pipe 22, where diffusion mixing and uniform pressure are promoted, and the mixed gas is jetted out uniformly from the flame hole 23A to generate a uniform flame. Form. The flame formation direction of the flame is controlled to be upward by a burner ring 24 provided on the outer periphery thereof, and stable combustion without lift is performed. Heat receiving flange 2
5 is heated by the flame formed in the flame hole 23A of the burner part 23, and the vaporizing chamber 16 is heated by the heat recovery action from the flame.
Is maintained at a certain temperature or higher, and it becomes possible to reduce a part or all of the current supply to the heater 21.

Here, since the vaporizing element 19 in the form of a cylindrical brush is disposed in the vaporizing chamber 16 as described above, the fuel that has entered the vaporizing chamber 16 uses the vaporized chamber 16 wall and the vaporizing element 19 that have become hot. And vaporize by touching, even if droplets generated by film boiling or insufficiently vaporized gas are generated,
Since the flocked lines 18 of the many vaporizing elements 19 are vaporized, and the pressure of the vaporizing chamber 16 at that time is also only partitioned by the spiral vaporizing element 19, the vaporizing chamber 16 is partitioned as one space. Has a damper effect such as pressure fluctuation, and the vaporized gas is also stably ejected from the nozzle 13 so that stable combustion can be obtained.

When the defective fuel is mixed, first, the fuel entering from the filler port 20 is gradually vaporized in the process of reaching the nozzle 13, and at this time, the fuel is mixed with the vaporized gas of the normal fuel. The defective component flows straight from the fuel supply port 20 of the vaporization chamber 16 to the nozzle 13 side as insufficiently vaporized fuel vaporized gas, and on the way, contacts a large number of flocking lines 18 of the vaporization element 19 and is collected as a tar component. .

Further, even if a part of the insufficiently vaporized fuel vaporized gas flows to the nozzle 13 side without being collected by the vaporizing element 19, the inner diameter A of the vaporizing chamber on the nozzle 13 side is equal to the fuel inlet side. Flocked line 1 smaller than inner diameter B of vaporization chamber
8, the vaporized gas that is insufficiently vaporized is promoted to mix with the vaporized gas of the normal fuel, and the finer particles are formed. By contacting the flocking line 18 of the vaporizing element 19 which has been brought into close contact with the vaporizing chamber 16 and has a high temperature, the vaporization of insufficiently vaporized fuel vaporized gas is promoted. The vaporized gas reaching the nozzle 13 hardly contains insufficiently vaporized fuel vaporized gas, and even if it is contained, the vaporized gas is finely divided. Therefore, the vaporized gas discharged from the nozzle 13 is stably discharged. Combustion becomes stable.

When the tar component accumulates on the flocking line 18 and the straight flow of the fuel vaporized gas is hindered, the flow of the vaporized gas flows along the axis 17 and the shaft 17 along the flocking line 1.
It passes through a helical space portion without a flocking line 17 formed by twisting across 8. Then, the insufficiently vaporized fuel vaporized gas of the defective kerosene passes through a long spiral path formed by the wall of the flocked line 18 to which the tar component is attached, and the tar component attached to the flocked line 18 becomes a nucleus, Insufficient vaporization of fuel vaporized gas is collected. Therefore,
Until the spiral space formed by the wall of the flocking line 18 is closed with the tar component, the vaporized gas reaches the nozzle 13 without containing the insufficiently vaporized fuel vaporized gas, so that the vaporized gas ejected from the nozzle 13 is stable. The fuel is ejected and the combustion becomes stable.

The life of the vaporizing element 19 is determined by the time during which the vaporized gas flows straight and the tar component is collected by touching the many flocking lines 18 of the vaporizing element 19.
Since the spiral space formed by the wall of the flocking line 18 is closed until the tar component is closed, the space in which the tar component is accumulated in two stages and the space is large, so that the service life can be extended.

Further, the outer diameter of the vaporizing element 19 formed by interposing a large number of flocking lines 18 between the plurality of axial lines 17 and twisting the axial lines 17 is apt to fluctuate.
6, it is difficult to maintain close contact with the vaporizing element 16
There is a problem that the vaporization of the fuel and the suppression of tar are apt to vary without increasing the temperature of the fuel cell itself.
If the outer diameter of the vaporizing element 19 is made larger than the inner diameter of the vaporizing element 6 so that the vaporizing element 19 cannot be inserted into the vaporizing chamber 16, it becomes difficult to insert the vaporizing element 19 into the vaporizing chamber 16. Since the inner diameter of the vaporization chamber 16 is smaller than the inner diameter B of the vaporization chamber 16, the fuel inlet side of the vaporization chamber 16 can be easily inserted, and since it is guided at that portion, the insertion of the vaporization chamber 16 on the nozzle 13 side is also difficult.

(Embodiment 2) FIG. 3 is a configuration diagram of a vaporization chamber of a combustion apparatus according to the present invention.

In FIG. 3, the vaporizing element 19 is disposed so that the start position of the flocking line 18 of the vaporizing element 19 on the nozzle 13 side and the position of the end of the vaporizing chamber 16 overlap. 18 improves the close contact with the wall of the vaporization chamber 16 on the nozzle 13 side, and
Are arranged with high density.

Then, similarly to the above, the vaporizing element 1
The life of 9 is such that while the vaporized gas flows straight and the tar component touches and collects a number of the flocking lines 18 of the vaporizing element 19, the helical space formed by the wall of the flocking line 18 is closed by the tar component. In this case, the space for storing the tar component is large in two stages, and the life can be extended.

In addition, when a part of the insufficiently vaporized fuel vaporized gas flows toward the nozzle 13 without being collected by the vaporizing element 19, the start position of the flocking line 18 of the vaporizing element 19 on the nozzle 13 side And the end of the vaporizing chamber 16 are arranged so as to overlap with each other, so that the flocking line 18 of the vaporizing element 19 improves the close contact with the vaporizing chamber 16 on the nozzle 13 side and the density of the flocking line 18 is increased. Therefore, the atomization proceeds in a portion where the flocking line 18 becomes dense, and the insufficiently vaporized fuel vaporized gas is mixed with the normal fuel vaporized gas at the same time, and at the same time, the temperature of the nozzle becomes high. By touching the flocked line 18 of the vaporizing element 19 which has been brought into close contact with the wall of the vaporizing chamber 16 on the 13 side, the vaporized gas of insufficient vaporization is promoted. The vaporized gas reaching the nozzle 13 hardly contains insufficiently vaporized fuel vaporized gas, and even if it is contained, the vaporized gas is finely divided. Therefore, the vaporized gas discharged from the nozzle 13 is stably discharged. Combustion becomes stable.

Furthermore, the implantation size of the flocking line 18 of the vaporizing element 19 formed by interposing a large number of flocking lines 18 between the plurality of axes 17 and twisting the axes easily varies.
Although it is difficult to maintain close contact with the vaporization chamber 16, there is a problem that the vaporization of the fuel and the suppression of tar are apt to vary without increasing the temperature of the vaporization element 16 itself.
Since the start position of the flocking line 18 of the vaporizing element 19 on the side and the position of the end of the vaporizing chamber 16 are arranged to overlap, the flocking line 1 of the vaporizing element 19 on the nozzle 13 side is arranged.
8 can be made to adhere to the wall of the vaporization chamber 16 without fail, and its performance can be stabilized.

In the present invention, the inner diameter A of the vaporizing chamber 16 on the nozzle 13 side is made smaller than the inner diameter B of the vaporizing chamber 16 on the fuel inlet side, and the flocked line 18 of the vaporizing element 19 on the nozzle 13 side. Although the configuration in which the start position and the position of the end of the vaporization chamber 16 overlap each other has been described, they may be configured at the same time, and other components may be configured as long as the object of the present invention is achieved. The configuration may be any.

[0045]

As described above, in the combustion apparatus according to the present invention, the vaporizing chamber is provided with a substantially cylindrical brush-shaped vaporizing element formed by interposing a plurality of flocked lines between a plurality of axes and twisting the axes. Initially, the vaporized gas flows straight through the tar component, and while the tar component touches and collects on a large number of flocking lines of the vaporizing element, a spiral spiral formed on the wall of the later flocking line In the process of vaporization gas flowing through the space, tar components are collected, and until the spiral space is closed with the tar component, there is a large space where the tar component is accumulated in two stages and the life is extended, so that the life can be extended Become.

Further, in a configuration in which the inner diameter of the vaporizing chamber on the nozzle side is smaller than the inner diameter of the vaporizing chamber on the inlet side of the fuel and the flocked line is dense, the insufficiently vaporized fuel vaporized gas is replaced with the normal fuel. The mixture with the vaporized gas is promoted, and the atomization proceeds.At the same time, the fuel is insufficiently vaporized by touching the flocked line of the high-temperature vaporization element in close contact with the high-temperature nozzle-side vaporization chamber. The vaporized gas is promoted to vaporize. And the vaporized gas reaching the nozzle is
Insufficiently vaporized fuel vaporized gas is almost not included,
Since it is contained and finely divided, the vaporized gas ejected from the nozzle is ejected stably, and the combustion becomes stable.

Further, the outer shape of the vaporizing element formed by interposing a large number of flocked lines between a plurality of axes and twisting the axes is likely to vary, and it is difficult to maintain close contact with the vaporizing chamber. Therefore, the temperature of the vaporizing element itself is high. Instead, the vaporization of the fuel and the suppression of tar become more likely to fluctuate, so if the outer diameter of the vaporizing element is made larger than the inner diameter of the vaporizing chamber to make sure that the vaporizing element is in close contact, it becomes difficult to insert the vaporizing element into the vaporizing chamber. Since the inside diameter of the vaporization chamber on the side is smaller than the inside diameter of the vaporization chamber on the fuel inlet side, the fuel entrance side of the vaporization chamber is easy to insert, and since it is guided by that part, the insertion of the nozzle side of the vaporization chamber is also easy. It is not so difficult, it is possible to easily and stably insert, and the performance can be stabilized.

Further, the start position of the flocking line of the vaporizing element on the nozzle side and the position of the end of the vaporizing chamber are disposed so as to overlap with each other, so that the flocking line of the vaporizing element improves the close contact with the vaporizing chamber on the nozzle side. In the configuration in which the flocked line is dense, finer graining progresses in the portion where the flocked line is denser,
Insufficient fuel vaporization gas is promoted to mix with normal fuel vaporization gas, and at the same time, comes into close contact with the high temperature nozzle side vaporization chamber and touches the flocked line of the high temperature vaporization element. Insufficiently vaporized fuel vaporized gas is promoted to vaporize. Then, the vaporized gas reaching the nozzle hardly contains the insufficiently vaporized fuel vaporized gas, and even if it is contained, the vaporized gas is finely divided. Becomes stable.

Further, the size of the flocked line implanted by the vaporizing element formed by interposing a large number of flocked lines between a plurality of axes and twisting the axes is easy to vary, and it is difficult to maintain close contact with the vaporizing chamber. However, the fuel vaporization and tar suppression are likely to vary without increasing the pressure, but since the flocking line start position of the vaporization element on the nozzle side and the position of the end of the vaporization chamber overlap each other, the nozzle side The flocked line of the vaporizing element can always be brought into close contact with the vaporizing chamber, and its performance can be stabilized.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a vaporization chamber of a combustion device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a hot air heater using the combustion device.

FIG. 3 is a configuration diagram of a vaporization chamber of a combustion device according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a hot air heater using a conventional combustion device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Vaporization part 13 Nozzle 16 Vaporization chamber 17 Axis 18 Flocking line 19 Vaporization element 20 Oil filler 21 Heater 23 Burner part

Continuation of the front page (56) References JP-A-8-170812 (JP, A) JP-A-6-254570 (JP, A) JP-A-49-23333 (JP, A) JP-A-6-19859 (JP) , U) Actually open sho 59-1224827 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F23D 11/02 F23D 11/40-11/44

Claims (2)

(57) [Claims] 1. A fuel supply means for supplying fuel, a vaporizer for vaporizing the supplied fuel, a heater for heating the vaporizer, a nozzle for ejecting gas vaporized in the vaporizer,
Equipped with a burner to burn the gas ejected from the nozzle,
A column-shaped cylindrical vaporization chamber for vaporizing fuel is disposed in the vaporization section, and the vaporization chamber has a substantially cylindrical brush shape formed by interposing a number of flocking lines between a plurality of axes and twisting the axes. A vaporization element is provided, and the inside diameter of the vaporization chamber on the nozzle side is smaller than the inside diameter of the vaporization chamber on the fuel inlet side, so that the close contact with the vaporization element on the nozzle side is improved and the flocked line is dense. apparatus. 2. A fuel supply means for supplying fuel, a vaporizer for vaporizing the supplied fuel, a heater for heating the vaporizer, and a nozzle for ejecting gas vaporized by the vaporizer.
Equipped with a burner to burn the gas ejected from the nozzle,
A column-shaped cylindrical vaporization chamber for vaporizing fuel is disposed in the vaporization section, and the vaporization chamber has a substantially cylindrical brush shape formed by interposing a number of flocking lines between a plurality of axes and twisting the axes. A vaporizing element is provided, and the flocking line start position of the vaporizing element on the nozzle side and the end portion of the vaporizing chamber are disposed so as to overlap with each other, and the flocking line of the vaporizing element is disposed on the vaporizing chamber on the nozzle side. A combustion device for improving the close contact with the hair and making the flocking line dense.