JP2001324112A - Combstion equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the configuration of the vaporizing section of combustion equipment through integral formation of the section by forging and molding and, at the same time, to prolong the tar life-time of the vaporizing chamber by forming the chamber in a flat shape. SOLUTION: The burner receiving seat 41 of this combustion equipment is formed of a nozzle fitting section 43A, a circular burner placing section 42 to which a burner section 55 is attached, an opening 44 formed between the burner placing and fitting sections 42 and 43A, a heater fitting section 5 provided on the lower surface side of the placing section 42, and the flat- shaped vaporizing chamber 46 which is formed by extending its front end section toward the outer periphery via a communicative port 45 communicating with the nozzle fitting section 43A. The receiving seat 41 is formed integrally, by forging and molding and, at the same time, the vaporizing chamber 46 is arranged along the heat fitting section 51A vaporization filters 48A and 48B are inserted into the chamber 46. In addition, a separate cap 46A is fitted to the end section of the chamber 46 on the side opposite to the nozzle fitting section 43A.

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 devices of this type have been proposed, and some of them burn liquid fuel gas obtained by vaporizing gas or kerosene. Hereinafter, a combustion device for burning the liquid fuel gas will be described as an example. Such a combustion device is configured as shown in FIG.

That is, first, fuel is supplied from the cartridge tank 2 to the tank 1, and the fuel in the tank 1 is supplied into the cylindrical vaporizer 4 maintained at a high temperature by the pump 3. The supplied fuel is vaporized by a vaporization promoting material (not shown) such as a cylindrical ceramic porous body or a wire mesh provided in the vaporizer 4 to become a vaporized gas, and has a high pressure in the vaporizer 4. It is ejected from the nozzle 5 in the horizontal direction. The fuel ejected from the nozzle 5 is ejected into a mixing pipe 6 provided at a position downstream of the vaporizer 4 while sucking primary air by an ejector effect, and is mixed there.
Is supplied to a line-shaped burner portion 7 integrated with the burner, and is burned there. The generated combustion gas is guided upward by a combustion tube 8 disposed so as to cover the periphery of the burner section 7, mixed with a room air flow from a blower 10 by a duct 9 covering the combustion tube 8, 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 3, the primary air amount increases or decreases accordingly, and the combustion amount changes while the fuel-to-air ratio is kept constant. You can do it.

[0004]

However, such a combustion apparatus having a conventional configuration uses a defective kerosene such as a modified oil which has been stored and oxidized for a long period of time or a different kind of oil mixed with a different component as a fuel. There is a problem in that tar is formed in the porous portion of the vaporization promoting material that vaporizes the fuel and clogging is caused to cause poor vaporization, and poor vaporization causes poor combustion.

For example, when clogging occurs and poor vaporization progresses, it becomes difficult for fuel to enter the vaporizer 4 and the amount of vaporization decreases, and the internal pressure of the vaporizer 4 does not become too high and the ejection of vaporized gas from the nozzle 5 becomes weak. At the same time, the fuel is ejected from the nozzle 5 as a liquid, and the ejector effect by the ejection is weakened, the suction amount of the primary air is reduced, and the combustion state of the burner unit 7 is deteriorated. , Producing carbon monoxide and eventually misfiring.

When the clogging of the vaporization accelerating material progresses, the clogging of the vaporization accelerating material particularly near the fuel inlet of the carburetor 4 hinders the fuel from entering the carburetor 4. The amount of fuel entering the carburetor 4, that is, the amount of vaporization, decreases with respect to the supply power, and eventually becomes weak combustion, exceeding the combustion limit to generate odor or misfire.

Here, clogging and the likelihood of poor vaporization, which are the causes of the final failure state, are determined by temperature conditions such as temperature distribution applied to the vaporization promoting material, pore diameter and porosity of the vaporization promoting material, and the like. The vaporization is promoted when the temperature of the vaporization accelerating material is high, but when the amount of vaporization such as weak combustion is small, it is vaporized only at the inlet of the fuel and is easily clogged locally. Therefore, when the temperature of the vaporization accelerating material is lowered, when the vaporization amount such as the maximum strong combustion increases, the vaporization becomes insufficient due to the shortage of the heat amount, so that tar is easily generated or the fuel is ejected from the nozzle 5 as a liquid. Or
In the case where poor vaporization occurs, especially when the amount of vaporization such as maximum strong combustion increases and the temperature of the vaporization promoting material is likely to be deprived by the latent heat of vaporization, or when the amount of heat received by the combustion part such as weak combustion is small, etc. It is difficult to keep the temperature high. In other words, it is better to set the temperature of the vaporization promoting material so that the fuel inlet is low and the exit side is high in accordance with the amount of heat required for vaporization. Is preferably uniform.

Further, when the density of the vaporization promoting material is reduced by decreasing the pore diameter and decreasing the porosity, the supplied fuel is diffused throughout the vaporization promoting material by capillary action between the pores to promote vaporization, but tar is generated. In this case, the portion where tar accumulates is small, and clogging occurs immediately when tar is generated. Therefore, when the pore diameter of the vaporization promoting material is increased and the porosity is increased and the density is lowered, especially when the amount of vaporization such as maximum strong combustion increases, the supplied fuel may have insufficient passage resistance or the central part of the vaporization promoting material. The temperature is inevitably lowered, so that the gas is easily passed with insufficient vaporization, and the fuel is ejected from the nozzle 5 as a liquid, and poor vaporization occurs. That is,
The porosity or density needs to be set optimally according to the material / shape of the vaporization promoting material and the distribution of temperature given from the surroundings.

For this reason, various improvements have been made. For example, if the vaporization accelerating material is a metal net that is rounded, the central portion of the net or the overlap of the net with the net will increase even if the overall density is increased. When the mesh of the net is coarse, the mesh of the net becomes large and sparse, and the wire of the net becomes thick and thick, so that the center of the net becomes sparse. When the mesh size of the net is reduced, the strands of the net become thinner and thinner, and the overlap between the nets tends to be less sparse, and it is difficult to uniformly increase the density. For this reason, the fuel that has entered the vaporizer 4 is ejected from the nozzle 5 with insufficient vaporization, or tar is locally generated in the highly dense and dense portion of the vaporization promoting material, causing clogging and poor combustion due to poor vaporization. Was likely to occur. In other words, if the vaporization promoting material is a rounded metal net, the temperature of the vaporization promoting material is high in thermal conductivity, so the temperature of the vaporization promoting material can be kept high up to the center, but the density is kept uniform throughout. It is difficult to achieve high density, especially.

In order to make the vaporization accelerating material more homogeneous, if the ceramic particles are made of a ceramic porous body formed by sintering or foaming, the density will be the size of the ceramic particles or the size of the foam. However, since the density is high and the porosity is low, the tar capacity is low, and the ceramic itself is not of good thermal conductivity, so the temperature at the center of the vaporization promoting material is low, Insufficient vaporization of the fuel flowing through the fuel cell causes poor vaporization and clogging. In other words, if a ceramic porous body is formed by sintering or foaming ceramic particles, it is easy to keep the density uniform, but the tar capacity is low and the temperature of the vaporization promoting material, especially the center It is difficult to keep the temperature of the section high, and it is difficult to sufficiently promote vaporization.

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 occurs due to poor vaporization or poor combustion due to clogging as described above. There has been a problem that poor vaporization caused by clogging of the vaporization promoting material due to tar generation affects the life of the equipment.

Further, in the above-described conventional combustion apparatus, since the burner portion 7 has a horizontally long line shape, the flame is hard to be uniform left and right, and the combustion at both ends tends to be disturbed by all means. Since it is blown right above, it is difficult to suppress the flow, and there is a problem that lift combustion is likely to occur. Further, there is also a problem that the burner 7 is easily deformed due to uneven temperature due to the line shape over time. Furthermore, since the mixing pipe 6 and the burner section 7 are disposed apart from the vaporizer 4, it is difficult to remove the heat of the burner section 7 to the vaporizer 6, and the burner section 7 is oblong. For this reason, there is also a problem that the dimensions of the device become horizontally long.

Conventionally, to solve such a problem, a combustion apparatus as shown in FIG. 16 has been proposed. That is, in this combustion device, a pump 12 is mounted on an upper surface of a tank 11, and one end of an oil feed pipe 13 is connected to the pump 12. The other end of the oil supply pipe 13 is connected to a circular carburetor 14, and the fuel sent from the tank 11 by the pump 12 is sent to a vaporization chamber 15 formed in the carburetor 14.

The vaporizing chamber 15 has a mixing tube 16 disposed at the center thereof, is formed in a donut shape so as to surround the mixing tube 16, and has a heater 17 embedded in the peripheral wall thereof. A communication path 19 communicating with the nozzle 18 is provided on the opposite side of the mixing pipe 16 with respect to the inlet of the oil supply pipe 13.

A return pipe 20 is attached to the nozzle 18, and an electromagnetic solenoid 21 is connected to the other end of the return pipe 20. Electromagnetic solenoid 2
The side opposite to the return pipe 20 is connected to the tank 11, and the electromagnetic solenoid 21 is provided with a needle 22 for opening and closing the nozzle 18.

A burner 23 is mounted on the upper portion of the vaporizer 14 so as to cover the outlet of the mixing tube 16, and is vaporized by a combustion flame formed in a flame hole 24 formed in a peripheral wall of the burner 23. The upper part 25 of the vessel 14 is configured to be heated.

In the above configuration, the vaporization chamber 15 is provided with the heater 1
The oil is heated to a predetermined temperature by 7, and is vaporized in the process of reaching the communication passage 19 from the oil supplied from the inlet of the oil supply pipe 13. The vaporized gas flows downward through the communication passage 19 below the vaporization chamber 15 and reaches the nozzle 18.

Here, when the vaporizer 14 reaches a predetermined temperature, the needle 22 opens and the vaporized gas is ejected from the nozzle 18. The vaporized gas flows vigorously toward the mixing pipe 16 provided at the center of the vaporizer 14, and accordingly, primary air is entrained from between the lower end of the mixing pipe 16 and the nozzle 18, and from the outlet of the mixing pipe 16 to the inside of the burner section 23. And mix
It is ignited on the outer periphery of the burner section 23 to generate a combustion flame and perform combustion.

In the combustion apparatus having such a configuration, the mixing pipe 1
6, the mixed gas flows back and forth, and the mixed gas is uniformly ejected and burned from a large number of flame holes 24 provided in the lower peripheral wall of the burner portion 23, so that the flame becomes uniform and the combustion flame is directed in the outer circumferential direction. However, the lift flame can be suppressed by a simple structure in which a burner ring 26 is provided on the outer periphery of the combustion flame so that the combustion flame flows upward. And, the vaporizer 14 has its upper flange 2
5 is heated by the combustion flame formed in the flame hole 24 formed in the peripheral wall of the burner portion 23, and the carburetor 14 is heated by the heat conduction from the burner portion 23, and the heater 17 is energized by the heat recovery action. Even without this, vaporization is continued and combustion is continued, that is, self-combustion is performed, and power saving is achieved.

However, the above conventional configuration has the following problems. That is, since the vaporizer 14 is formed on the outer periphery of the mixing tube 16 so as to surround the same, the vaporizer 14 itself becomes large, and it is difficult to make the vaporizer 14 compact, and the heat capacity of the vaporizer 14 increases. There has been a problem that it takes time to heat the vaporizer 14 at the start of operation to a predetermined temperature, that is, the time until ignition is long.

Further, the vaporizer 14 surrounding the mixing tube 16
Is a donut-shaped disk, which makes it difficult to fill the vaporization chamber 15 with a vaporization promoting material for smoothing the fuel and suppressing the generation of tar, for example, which limits the selection of the vaporization promoting material. . Further, the temperature gradient in the vaporization chamber 15 cannot be provided, and the temperature near the inlet of the oil supply pipe 13 in the vaporization chamber 15 and the temperature on the nozzle 18 side are almost the same. When the pressure is increased, vaporization is performed near the inlet of the oil supply pipe 13 of the vaporization chamber 15, and tar is generated at that portion to prevent fuel from entering the vaporization chamber 15. In particular, in the case of weak combustion with a small latent heat of vaporization, the fuel supply power of the pump 39 is also small, so that the vaporization chamber 15
It easily accumulates in the vicinity of the inlet of the oil supply pipe 13 and synergistically deteriorates the tar characteristics. Therefore, when trying to lower the vaporization temperature, the temperature of the vaporized gas also decreases, and in the case of strong combustion that requires a large amount of latent heat of vaporization, the vaporization state becomes further insufficient and the combustion becomes unstable, so the temperature cannot be lowered so much. There is a problem that the performance cannot be sufficiently improved.

Also, since the nozzle 18 goes around and is separated from the lower surface of the vaporizer 14, the vaporizer 14 and the nozzle 18
And the shape of the nozzle 1
8 and the nozzle 18 is located below the vaporization chamber 15, so that the high-temperature vaporized gas remains at the upper part of the vaporization chamber 15, and the low-temperature non-vaporized gas or oil flows into the lower part. The vaporized gas hardly flows through the passage 18 through the nozzle 18, and the vaporized gas is easily tarred from the communication passage 19 to the nozzle 18 because the low-temperature gas or the low temperature of the nozzle 18.
There was a problem that combustion was not stable.

Further, if the vaporizer 14 is forged with brass made of heat-resistant and high-heat-conductivity in order to save the labor of processing, the vaporizer 14 may become complicated if its shape is complicated. On the contrary, it is troublesome or difficult to obtain accuracy. Particularly, the vaporization chamber 15 into which the vaporization promoting material is inserted is internally cut, and for example, when the hole diameter is small and narrow, or when the cross section of the insertion is not circular but deep in a rectangular or elliptical shape. Such a shape is difficult to machine because the shank of the cutting tool is bent during machining and cannot be straightened.

The present invention has solved the above-mentioned problem, and forging and forming a vaporizing chamber formed in a vaporizer into a substantially flat shape at the same time as the outer shape, and making the cross-sectional shape of the vaporizing chamber suitable for vaporizing, thereby stabilizing vaporization. The purpose of the present invention is to stabilize the combustion and to suppress the formation of tar in the vaporized gas to prolong the life of tar.

[0025]

According to the present invention, there is provided a nozzle mounting portion for mounting a nozzle, a substantially circular burner mounting portion for mounting a burner portion for burning gas ejected from the nozzle. An opening formed between the burner mounting portion and the nozzle mounting portion, a heater mounting portion provided on a lower surface side of the burner mounting portion, and a distal end portion formed through a communication port communicating with the nozzle mounting portion at the outer periphery. A burner receiving seat is formed by a substantially flat vaporizing chamber formed by extending in the direction, and the burner receiving seat is integrally formed by forging, and the vaporizing chamber is disposed along the heater mounting portion. Then, a vaporization filter is inserted inside, and a separate cap provided with a fuel supply port for supplying fuel is mounted on the end of the vaporization chamber opposite to the nozzle mounting portion.

According to the above-mentioned invention, the main part constituting the vaporizer is integrally formed as a burner receiving seat by forging, and in particular, the vaporization chamber closely related to tar suppression, which is the main object of the present invention, is arranged along the heater. And a separate cap with a fuel supply port for supplying fuel at the end of the vaporization chamber opposite to the nozzle mounting part. Therefore, the vaporizer eliminates the need for processing, and almost no post-processing such as cutting is required, and the cross-sectional shape of the vaporization chamber into which the vaporization filter is inserted can be made suitable for vaporization. It is possible to stabilize the combustion and stabilize the combustion, suppress the formation of tar in the vaporized gas, and prolong the life of tar.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a nozzle mounting portion for mounting a nozzle, a substantially circular burner mounting portion for mounting a burner portion for burning gas ejected from the nozzle, and the burner mounting portion. An opening formed between the mounting portion and the nozzle mounting portion, a heater mounting portion provided on the lower surface side of the burner mounting portion, and a distal end portion extending in a peripheral direction through a communication port communicating with the nozzle mounting portion. A burner receiving seat is formed with the substantially flat vaporizing chamber formed by the above process, and the burner receiving seat is integrally formed by forging, and the vaporizing chamber is disposed so as to be along the heater mounting portion and has an internal portion. And a separate cap provided with a fuel supply port for supplying fuel to the end of the vaporization chamber opposite to the nozzle mounting portion.

The main part of the vaporizer is integrally formed by forging as a burner receiving seat. Particularly, the vaporization chamber closely related to tar suppression, which is the main object of the present invention, is located close to the heater. It is configured by inserting a vaporization filter inside and installing a separate cap provided with a fuel supply port for supplying fuel to the end of the vaporization chamber opposite to the nozzle mounting part, The evaporator saves processing time and hardly requires post-processing such as cutting, and the cross-sectional shape of the vaporizing chamber, in which the vaporizing filter is inserted, can be made suitable for vaporizing, stabilizing vaporization and improving combustion. It is possible to stabilize and to suppress the tarification of the vaporized gas, thereby extending the life of tar.

The invention described in claim 2 is configured such that the vaporizing chamber has a substantially flat shape, and a vaporizing filter having the entire periphery or a part thereof adhered to the inner wall of the vaporizing chamber is inserted.

Since the vaporizing chamber has a substantially flat shape and a vaporizing filter having the entire periphery or a part thereof adhered to the inner wall of the vaporizing chamber is inserted, heat supplied to the vaporizing chamber is reduced. Is substantially flat, heat is transferred into the vaporization chamber with a wide heat transfer surface, the distance between the upper and lower vaporization chamber wall surfaces and the center is short, the temperature difference is small, and ideal heating can be performed.

Further, since the fuel entering from the fuel supply port has a substantially flat vaporizing chamber, the fuel spreads and spreads in the lateral direction, and is gradually vaporized in the process of reaching the nozzle while being promoted to be vaporized. The fuel diffused over a wide area is heated on the wide heat transfer surface and heated at a high temperature in the center, and is vaporized.This stabilizes vaporization, stabilizes combustion, and suppresses tarification of vaporized gas. The life of tar can be extended.

According to a third aspect of the present invention, the U is formed so as to extend along approximately a half circumference on the lower surface side of the burner receiving seat opposite to the vaporizing chamber.
A heater in the shape of a letter is arranged so that the heater part is separated from the vaporization chamber, and the temperature near the fuel supply port is near or below the initial fuel pool temperature, and the temperature near the nozzle is the final fuel pool. It is configured to have a temperature near or above the point temperature.

Since a U-shaped heater is provided along a substantially half circumference on the lower surface side of the burner receiving seat on the opposite side of the vaporization chamber and the heater portion is separated from the vaporization chamber.
Since the combustion heat of the burner is transmitted to the vaporization chamber via the burner seat, the temperature gradient generated by the conduction heat path lowers the temperature on the fuel supply port side of the vaporization chamber and raises the temperature near the nozzle. Thus, the temperature near the fuel supply port can be set to a temperature near or lower than the initial storage point temperature of the fuel, and the temperature near the nozzle can be set to a temperature near or higher than the final storage point temperature of the fuel.

Further, since the fuel entering from the fuel supply port has a substantially flat shape in the vaporizing chamber, the fuel spreads in the lateral direction and is diffused, and is gradually vaporized in the process of reaching the nozzle while being promoted to be vaporized. To go. At that time, since the temperature near the fuel supply port is set to a temperature close to or lower than the initial fuel pool point temperature, the fuel that has entered through the fuel supply port spreads a little further toward the fuel supply port and spreads out in the lateral direction. Since the vaporization is started from the portion where the fuel is discharged, and the temperature in the vicinity of the nozzle is set to a temperature close to or higher than the end-point temperature of the fuel, the vaporization of the fuel is completed before the nozzle.

That is, as described in claim 2, since the vaporization chamber has a substantially flat shape, the temperature difference between the wall surface and the central portion is small, and the temperature near the fuel supply port is reduced by the wide heat transfer surface. The temperature near the nozzle point temperature or lower, the temperature near the nozzle is set as the temperature near or higher than the final boiling point temperature of the fuel, so that the fuel can perform an ideal vaporization transition,
The fuel is vaporized only near the fuel supply port, causing local clogging, or insufficient vaporization due to insufficient heat, making it easier to produce tar, or fuel being ejected from the nozzle as a liquid, There is no fear of causing poor vaporization, and it is possible to stabilize vaporization, stabilize combustion, suppress tarification of vaporized gas, and extend the life of tar.

According to a fourth aspect of the present invention, a vaporization filter is divided into two and disposed in a vaporization chamber.
A space is provided between the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side opposite to the vaporization chamber, and is mechanically and thermally divided into a primary vaporization section and a secondary vaporization section. There is a configuration.

The vaporization filter is divided into two in the vaporization chamber, and a space is provided between the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side. The vaporizing filter on the supply port side can be mechanically divided as a primary vaporizing section, and the vaporizing filter on the nozzle side can be mechanically divided as a secondary vaporizing section. The primary vaporizing section is mainly a vaporization promoting section and the secondary vaporizing section is a vaporized gas. Is further vaporized completely, and as a tar collecting portion for a high-boiling component that does not vaporize, it is possible to stabilize vaporization and stabilize combustion by sharing functions.
In addition, since the vaporization filter is divided, it is possible to change the material of the vaporization filter on the nozzle side and the vaporization filter on the fuel supply port side, etc., so that it can be set to function as a vaporization promotion section and tar collection section. become. In addition, in the space between the vaporization filters, some of the large particles of tar that could not be vaporized by the vaporization filter on the fuel supply port side accumulate, reducing the amount of tar that is sent to the vaporization filter on the nozzle side. Therefore, clogging of the vaporization filter on the nozzle side can be reduced.

That is, since it is mechanically and thermally divided into a primary vaporization section and a secondary vaporization section, the vaporization is stabilized to stabilize the combustion, and the fuel is vaporized only near the fuel supply port to locally There is no need to worry about clogging or insufficient vaporization due to insufficient calorific value, making it easy to generate tar, or fuel may be ejected from the nozzle as a liquid, resulting in poor vaporization. Therefore, the life of tar can be prolonged by suppressing the production and increasing the storage capacity, and the tar performance can be improved.

The invention described in claim 5 is configured such that either or both of the primary vaporization filter and the secondary vaporization filter are made of foamed metal having a porosity of 90% or more.

The porosity of one or both of the primary vaporization filter and the secondary vaporization filter is 90.
% Or more, the pores can be made uniform and dense, the porosity can be increased, and it can be made of a metal material with good heat conductivity, so that the inside can be heated to a high temperature. Thus, the vaporization area can be expanded to promote vaporization.

According to a sixth aspect of the present invention, one or both of the primary vaporizing filter and the secondary vaporizing filter are made of foamed metal having a porosity of 90% or more, and the outer periphery of the vaporizing filter is formed in a vaporizing chamber. It is configured to be pressed into a cross-sectional shape as described above.

The porosity of one or both of the primary vaporization filter and the secondary vaporization filter is 90.
% Or more, and the outer periphery of the vaporization filter is formed by pressing the outer periphery of the vaporization filter into the cross-sectional shape of the vaporization chamber. The cross-sectional shape is compressed, the tissue becomes denser, and the heat conduction is improved, so that the temperature of the inner wall of the vaporizing chamber can easily reach the center, and vaporization can be further promoted.

In order to form the foam metal into a predetermined shape,
When a shearing process such as a punching press is performed, the end portion is compressed at an inclination of about 45 °, and the portion is clogged, which has the problem of hindering the flow of fuel. In addition, because of the foamed shape, the end structure is weak and there is a concern that chips may occur, which may cause problems.However, it is easy to press the metal foam into the cross-sectional shape of the vaporization chamber and mold it. To a predetermined shape.

Further, since the porosity of the vaporizing filter is made of a foamed metal having a porosity of 90% or more, the porosity does not decrease so much even when compressed. The porosity is 85% or more and is hardly affected by compression, the tar storage capacity is large, heat conduction is good, and it is possible to raise the temperature to the inside,
The vaporization area can be expanded to promote vaporization.

Further, according to the present invention, either or both of the primary vaporizing filter and the secondary vaporizing filter are made of a foamed metal having a porosity of 90% or more, and the outer periphery of the vaporizing filter and the vaporizing chamber are formed. The structure is such that a metal-made vaporization holder having high thermal conductivity is arranged between the inner surfaces of the metal.

Then, either or both of the primary vaporization filter and the secondary vaporization filter have a porosity of 90.
% Or more, and a metal vaporization holder having high thermal conductivity is disposed between the outer periphery of the vaporization filter and the inner surface of the vaporization chamber. And the vaporization holder with the vaporization filter inserted can be pressed into the vaporization chamber and closely adhered to its inner wall, making it easier to reach the temperature of the vaporization chamber wall to the center of the vaporization filter and further promoting vaporization. .

Further, since the cross-sectional shape of the vaporizing filter is structurally smaller than the cross-sectional shape of the vaporizing chamber and the space between the vaporizing filters is widened, the tar storage capacity in the space is increased, and especially the secondary vaporizing section is vaporized. 1 with vaporization holder from indoor wall
Since the step is separated, the step serves as a weir and dams fuel that is insufficiently vaporized.Furthermore, the vaporization is stabilized, and the vaporized gas ejected from the nozzle is stably ejected and the combustion is stabilized. Can be achieved.

According to the present invention, a heat receiving portion for receiving the heat of the burner portion is provided near the vaporizing chamber, and the secondary vaporizing filter on the nozzle side and the heat receiving portion on the fuel supply port side are provided.
The space between the secondary vaporization filters is arranged near the lower part of the heat receiving section.

A heat receiving portion for receiving the heat of the burner portion is provided near the vaporizing chamber, and a space between the secondary vaporizing filter on the nozzle side and the primary vaporizing filter on the fuel supply port side is formed under the heat receiving portion. Since it is arranged in the vicinity, the effect of dividing the vaporization filter of claim 4 into two can be obtained in the same manner, and the heat of the heat receiving portion is transmitted by the radiation of the inner wall of the vaporization chamber to raise the temperature of the space portion to a high temperature. So that
The primary vaporized gas passing through the space can be heated to a high temperature by radiant heat from the vaporization chamber wall without passing through the vaporization filter, and furthermore, the vaporization can be stabilized and the combustion can be stabilized.

According to a ninth aspect of the present invention, a space is provided in the vicinity of the fuel supply port of the primary vaporization filter on the fuel supply port side, and the temperature in the vicinity of the fuel supply port is set to a value close to the temperature of the initial fuel collection point. Hereinafter, the configuration is such that the temperature in the vicinity of the nozzle portion is set to a temperature close to or higher than the end-point temperature of the fuel.

Then, the temperature in the vicinity of the fuel supply port is set to a value close to or lower than the initial storage point temperature of the fuel, and
Since a space is provided near the fuel supply port of the secondary vaporization filter, the fuel supplied to the vaporization chamber flows to the primary vaporization filter through the space near the fuel supply port and is vaporized there. There is no need to worry that fuel is vaporized only near the fuel supply port and locally clogged. In addition, impurities such as minute dust contained in the fuel are supplied and gradually accumulated, accumulate on the surface of the vaporization filter facing the fuel supply port, impeding the fuel from flowing into the vaporization chamber, and impairing the fuel supply. However, the presence of a space near the fuel supply port allows the aforementioned impurities to accumulate in that area, and further enlarges the surface of the vaporization filter facing the fuel supply port. Clogging can be prevented.

Further, according to the present invention, the primary vaporizing filter and the secondary vaporizing filter are provided in the vaporizing chamber.
And the cross-sectional shape of the insertion hole of the secondary vaporization filter on the nozzle side is configured to be partially or entirely smaller than the cross-sectional shape of the insertion hole of the primary vaporization filter on the fuel supply port side. The configuration is such that the length of the secondary vaporization filter is shorter than the length of the insertion hole of the secondary vaporization filter in the longitudinal direction, and the shorter portion is used as a space between the secondary vaporization filter and the primary vaporization filter.

The primary vaporizing filter and the secondary vaporizing filter are divided and disposed in the vaporizing chamber, and a part or the whole thereof is smaller than the sectional shape of the insertion hole of the primary vaporizing filter on the side of the fuel supply port. In addition, the cross-sectional shape of the insertion hole of the secondary vaporization filter on the nozzle side is configured so that the length of the secondary vaporization filter is shorter than the longitudinal length of the insertion hole of the secondary vaporization filter.
Since the space between the primary vaporizing filter and the primary vaporizing filter is provided, the effect obtained by dividing the vaporizing filter of claim 4 into two can be obtained in the same manner. Since the positioning of the secondary vaporizing filter and the secondary vaporizing filter is not required, the configuration is simplified. Further, the cross-sectional area of the secondary vaporization filter on the nozzle side becomes smaller than that of the other parts, the resistance when the vaporized gas of the fuel passes increases, and the supplied fuel becomes difficult to pass with insufficient vaporization. . As a result, tar generation of defective fuel is easily performed on the fuel supply port side, and the vaporized gas reaching the nozzle does not include insufficiently vaporized fuel vaporized gas. And the combustion becomes stable. Furthermore, since the nozzle side of the vaporization chamber is a small hole, the heat transfer area is larger than other parts, and the distance to the center of the secondary vaporization filter is also shorter, so the temperature of the center of the secondary vaporization filter is higher. This makes it easier to collect tar as a secondary vaporization unit.

Further, according to the present invention, the primary vaporizing filter and the secondary vaporizing filter are provided in the vaporizing chamber.
And a spacer is provided between the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side.

In the vaporization chamber, a primary vaporization filter and a secondary vaporization filter are divided and disposed, and the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side are disposed.
Since the spacer is disposed between the secondary vaporizing filters, the effect of dividing the vaporizing filter into two parts according to claim 4 can be obtained similarly, and the space becomes a spacer part, the space shape is stabilized, and the fuel supply port is provided. The primary vaporizing filter on the side can be divided into a primary vaporizing section and the secondary vaporizing filter on the nozzle side can be divided into a secondary vaporizing section, so that the vaporization can be stabilized and the combustion can be stabilized. Become.

According to the twelfth aspect of the present invention, the spacer disposed between the primary vaporization filter and the secondary vaporization filter is a vaporization net made of a metal net disposed along the inner wall of the vaporization chamber. There is a configuration.

The vaporizing net disposed between the primary vaporizing filter and the secondary vaporizing filter is made of a metal net disposed along the inner wall of the vaporizing chamber. When the unvaporized fuel flows out of the primary vaporization filter on the side of the fuel supply port, the fuel flows along the vaporization chamber wall, is diffused by the vaporization net, is promoted in vaporization, and has a high temperature space. The vaporization of the fuel in the section tends to cause film boiling and instability of vaporization such as pulse, but the film boiling can be suppressed by the vaporization net, and the vaporized gas ejected from the nozzle is stably ejected and burned Becomes stable.

According to the thirteenth aspect of the present invention, the spacer provided between the primary vaporization filter and the secondary vaporization filter is provided between the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side. Also has a configuration using a vaporization diffusion filter having a low density.

The density of the vaporization diffusion filter provided between the primary vaporization filter and the secondary vaporization filter is lower than that of the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side. Therefore, the effect of vaporization and diffusion of the vaporization net according to claim 12 is similarly obtained, and the primary vaporization filter on the fuel supply port side is used as a primary vaporization section, and the secondary vaporization filter on the nozzle side is used as a secondary vaporization section. In addition, the low-density vaporization diffusion filter between them is structurally divided as an intermediate part where the vaporization promotion and trapping sections are mixed, and the insufficient vaporized fuel contained in the vaporized gas from the primary vaporization filter on the fuel supply port side is removed. The gas can be collected and vaporized by the vaporization diffusion filter, and the fuel passing through the entire space can be diffused and vaporized.

Further, in the invention according to claim 14, the spacer provided between the primary vaporization filter and the secondary vaporization filter includes a secondary vaporization filter on the nozzle side and a primary vaporization filter on the fuel supply port side. A vaporized diffusion filter made of the same material and having a reduced cross-sectional shape is provided with a space around the filter.

The vaporization diffusion filter disposed between the primary vaporization filter and the secondary vaporization filter is made of the same material as the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side, and has a small sectional shape. Then, since the space is provided around the periphery, the effect of the vaporization diffusion filter according to claim 13 is similarly obtained, and since the cross-sectional shape is small and the space is provided, the primary vaporization filter on the fuel supply port side is required. 1
The secondary vaporization filter on the nozzle side and the secondary vaporization filter can be structurally divided as a secondary vaporization section. When the non-vaporized fuel flows out of the primary vaporization filter on the fuel supply port side, the primary vaporization filter can be separated. Since it is the same material as the vaporization filter, most of it is on the nozzle side through the vaporization diffusion filter.
It flows to the next vaporization filter, and in the process, it is further diffused by the vaporization diffusion filter and the vaporization is promoted. In addition, fuel that does not pass through the vaporization diffusion filter is accumulated in the space as a tar component such as defective kerosene having a low specific gravity and insufficient vaporization.As a result, the vaporization gas is further suppressed from being tarred and the storage amount is reduced. In many cases, the life of tar can be prolonged, and the tar performance can be improved.

Further, the invention described in claim 15 is configured such that the spacer provided between the primary vaporization filter and the secondary vaporization filter is a thin metal-plate-like vaporization spacer having a corrugated and high heat conductivity. .

Since the vaporization disposed between the primary vaporization filter and the secondary vaporization filter is formed in a thin metal plate having a corrugated heat conductivity, the effect of the spacer according to claim 11 can be obtained. At the same time, the vaporizing spacer is heated to high temperature by the radiation of the inner wall of the vaporizing chamber, and the vaporized gas from the primary vaporizing filter comes into contact with the spacer to further raise the temperature of the vaporized gas and promote the vaporization of insufficiently vaporized gas. Tar life can be suppressed and tar capacity can be increased to increase the life of tar and improve tar performance.

Further, in the invention according to claim 16, the spacer provided between the primary vaporization filter and the secondary vaporization filter includes a secondary vaporization filter on the nozzle side and a primary vaporization filter on the fuel supply port side. It is configured as a thin metal plate-shaped vaporizing spacer that is placed at both ends and bent into a convex shape with a step in the space.

The vaporizing spacer provided between the primary vaporizing filter and the secondary vaporizing filter has a secondary vaporizing filter on the nozzle side and a primary vaporizing filter on the fuel supply port side mounted on both ends, and a space portion. Since it is a thin metal plate formed by bending into a convex shape provided with a stepped portion, the effect of claim 15 and the vaporizing spacer can be obtained in the same manner.
During the production of the vaporization chamber, the vaporization filter can be inserted at the same time simply by inserting the vaporization spacer on which the primary vaporization filter and the secondary vaporization filter are placed into the vaporization chamber, saving man-hours.
The insertion accuracy such as the space dimension is also improved.

Further, in the invention according to claim 17, the spacer provided between the primary vaporization filter and the secondary vaporization filter comprises a nozzle side secondary vaporization filter and a fuel supply port side primary vaporization filter. It is mounted on both ends and has a configuration in which a stepped portion is provided in a space portion, and the cross-section thereof is a convex shape and a vaporized spacer of a metal molded product having good heat conductivity.

The vaporizing spacer disposed between the primary vaporizing filter and the secondary vaporizing filter has a secondary vaporizing filter on the nozzle side and a primary vaporizing filter on the fuel supply port side mounted on both ends, and a space portion. Because the cross section with the step is provided as a metal molded product with good thermal conductivity with a convex shape,
The same effect as in claim 16 is obtained, and at the time of manufacturing the vaporization chamber,
Just by inserting the vaporizing spacer with the primary vaporizing filter and the secondary vaporizing filter placed in the vaporizing chamber, the vaporizing filter can be inserted at the same time, saving man-hours. The vaporizing spacer protects the vaporizing filter, and the insertion accuracy such as space dimensions Also improve. Also, heat from the inner wall of the vaporizing chamber can be transferred to the vaporizing filter and the space via the vaporizing spacer, and even if a large amount of fuel is temporarily supplied and the temperature of the vaporizing filter is going to decrease, the heat capacity of the vaporizing spacer is large.
The temperature change gradually changes by that amount, and during that time, the temperature of the vaporization chamber is corrected by the feedback of the heat received by the combustion heat, so that the vaporization performance is stabilized.

The invention described in claim 18 is configured such that the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side are fixed to a thin plate-like fixing plate by fastening means.

Since the secondary vaporizing filter on the nozzle side and the primary vaporizing filter on the fuel supply port side are fixed to the fixing plate by fastening means, the effect of dividing the vaporizing filter according to claim 4 can be obtained. In the manufacture of the vaporization chamber, it is only necessary to insert a fixing plate in which the primary vaporization filter and the secondary vaporization filter are fixed by the fastening means into the vaporization chamber. , The primary vaporization filter and the secondary vaporization filter do not come off the fixing plate, and the assemblability is further improved.

In the invention according to claim 19, a space is provided between the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side, and the secondary vaporization filter and the primary vaporization filter and the space therefor. A thin plate-shaped diffusion filter is provided on the upper surface, lower surface, or both surfaces of the portion.

A space is provided between the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side,
Since the secondary vaporizing filter, the primary vaporizing filter, and the diffusion filter in the form of a thin plate are disposed on the upper surface, the lower surface, or both surfaces of the space portion thereof, the effect of dividing the vaporizing filter according to claim 4 can be similarly obtained, The primary vaporizing filter on the fuel supply port side is used as the primary vaporizing part, and the secondary vaporizing filter on the nozzle side is used as the secondary vaporizing part. A part to promote is obtained at the same time, and the promotion of vaporization spreads throughout the vaporization chamber, suppressing the vaporization of gas into tar and increasing the storage capacity to extend the life of tar and improve tar performance. .

Further, according to the present invention, a diffusion filter is provided on the upper or lower surface or both surfaces of the secondary vaporizing filter on the nozzle side and the primary vaporizing filter on the fuel supply port side and the space therebetween. A primary vaporization filter and a secondary vaporization filter are fixed to the diffusion filter by fastening means.

A diffusion filter is disposed on the upper surface, lower surface, or both surfaces of the secondary vaporization filter on the nozzle side, the primary vaporization filter on the fuel supply port side, and the space between them. Since the secondary vaporization filter is fixed by the fastening means, the assemblability of claim 18 is improved, and the effects of vaporization stability and combustion stability of claim 19 are simultaneously obtained.

[0074]

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

(Embodiment 1) FIG. 1 is a sectional view of a main part of a combustion apparatus according to a first embodiment of the present invention, FIG. 2 is a top view of a main part of the combustion apparatus, and FIG. 3 is a configuration diagram of a hot air heater.

First, the configuration of a hot air heating apparatus using the combustion apparatus of the present invention will be described with reference to FIGS. 1, 2 and 3.
Reference numeral 1 denotes a main body case, which is provided with a tank 32 for holding liquid fuel on a lower side thereof and a detachable cartridge tank 33 above the tank 32. Numeral 34 designates a pump mounted on the upper surface of the tank 2, and from the upper end thereof, an oil feed pipe 3.
The fuel is supplied to the combustion device 36 via the fuel cell 5.

Reference numeral 37 denotes a combustion tube for guiding the combustion gas from the combustion device 36 upward, and a blower 38 for taking in and sending out the indoor air flow is disposed behind the combustion tube. Reference numeral 39 denotes a duct for mixing the combustion gas from the combustion tube 37 with the indoor air flow to generate hot air. A control unit 40 controls the combustion of the combustion device 36 and the blower 38, and controls the pump 34, the blower 38, and the like in a predetermined sequence based on an operation condition signal input from the operation unit. .

Next, the structure of the combustion device 36 will be described.
Reference numeral 41 denotes a vaporizing portion (burner receiving seat), on which a circular burner mounting portion 42 is provided, and a nozzle mounting portion 43A is provided so as to be located substantially at the center of the burner mounting portion 42.
3 and the above-mentioned burner mounting part 42 and nozzle mounting part 43
A, an opening 44 for primary air intake for supplying combustion air is provided between the first and second burner mounting portions 4 through a communication port 45 communicating with the nozzle mounting portion 43A.
A substantially flat vaporizing chamber 46 located in the vicinity of 2 is integrally formed by extending in the outer peripheral direction.

Further, the vaporizing section 41 is provided with the above-mentioned burner placing section 42.
And the like, and a part of the vaporization chamber 46 in the inward direction are simultaneously forged and formed. The vaporization chamber 46 has a substantially flat shape and is disposed close to the heater mounting portion 51A. A vaporization filter 48A, 48B is inserted therein, and a separate cap 46A provided with a fuel supply port 47 for supplying fuel is mounted on the end of the vaporization chamber 46 on the opposite side of the nozzle 43.

The vaporizing filters 48A and 48B are made of foamed metal having a porosity of 90% or more, and are formed by pressing the outer periphery to the cross-sectional shape of the vaporizing chamber 46.
Vaporization filter 48B on the side and the fuel supply port 47 side
The filter is divided into two parts in the secondary vaporization filter 48A,
A space is provided near the fuel supply port 47 of the secondary vaporization filter 48A.

A ring-shaped spacer 49 is provided between the primary vaporizing filter 48A and the secondary vaporizing filter 48B to form the secondary vaporizing filter 48B and the primary vaporizing filter 4B.
8A, the temperature near the fuel supply port 47 is near or below the initial fuel pool temperature, and the temperature near the nozzle 43 is near or above the fuel final pool temperature. It is mechanically and thermally divided into a secondary vaporization section and a secondary vaporization section.

Further, a U-shaped heater 51 is disposed along a substantially half circumference on the lower surface side of the burner receiving seat 42 on the opposite side of the vaporization chamber 46 of the vaporization chamber 41. It is configured apart. The primary air intake opening 44 is hollowed out leaving a rib 53 provided with a temperature detecting means 52 for detecting a temperature extending from the burner receiving seat 42 to the nozzle 43 mounting portion.
, A nozzle 43, a communication port 45, and a vaporization chamber 46 are arranged in a straight line.

The vaporizing section 41 is configured to cool from the fuel supply port 47 side of the vaporizing chamber 46 by the air flow from the convection blower 38.

Reference numeral 54 denotes a bottomless cylindrical mixing tube mounted on the burner mounting portion 42 so as to be located above the nozzle 43, and is formed in an upward tapered shape having a slightly larger upper portion.
The mixing pipe 54 has a throat-shaped inlet portion, and is opposed to the nozzle 43. The mixing pipe 54 is configured to supply the fuel gas ejected from the nozzle 43 and the primary air sucked by the ejector effect by the ejection of the fuel gas. It is designed to be mixed.

Reference numeral 55 denotes a canned cylindrical burner portion which is overlapped and covered on the burner receiving seat 42 from the upper opening side so as to cover the mixing tube 54. It is formed.

Reference numeral 57 denotes an upwardly tapered burner ring attached to the burner mounting portion 42 so as to surround the outer peripheral portion of the flame hole 56. Reference numeral 58 denotes a heat receiving portion formed on the burner mounting portion 42. The secondary vaporization filter 48B on the nozzle 43 side and the primary vaporization filter 48A on the fuel supply port 47 side
It is arranged to be located near the upper part of the space 50 between them.

In the above configuration, the cartridge tank 3
The liquid fuel supplied to the tank 32 so as to maintain a constant oil level from 3 is sucked up from the tank 32 by the pump 34 and sent to the vaporization chamber 46 of the combustion device 36 through the oil supply pipe 35 and the fuel supply port 47. Can be The sent fuel is vaporized in the vaporization chamber 46 maintained at a predetermined temperature or higher by the heater 51 and becomes high-pressure fuel gas, and is ejected from the nozzle 43. At this time, the primary air is sucked by the ejector effect and the vaporization chamber 46 is sucked. Are mixed in a mixing pipe 54 provided on the downstream side and supplied into a burner 55, and are ejected from a flame hole 56 to form a combustion flame. Then, the generated combustion gas flows above the combustion tube 37, is mixed with the indoor air flow from the blower 38 in the duct 39, is discharged as warm air, and is used for heating. Then, the control unit 40 controls the heater 51, the pump 34, the blower 38, and the like in a predetermined sequence based on the conditions set by the operation unit to start and stop the operation, and to change the combustion amount. Perform operation control.

The combustion of the burner 55 will be described. The fuel gas ejected from the nozzle 43 flows into the mixing pipe 54 provided on the downstream side of the vaporization chamber 46 while sucking the primary air by the ejector effect. Mixed here,
The gas is discharged from the upper opening of the mixing tube 54 into the burner 55, flows around the outer periphery of the mixing tube 54, and is ejected from a large number of flame holes 56 provided below the burner 55 to burn.

At this time, the mixed gas is turned back to the burner section 55 and flows around the mixing pipe 54, where diffusion and uniformity of pressure are promoted, and the mixed gas is jetted out uniformly from the flame hole 56 to form a uniform flame. To form The flame formation direction is controlled to be upward by a burner ring 57 provided on the outer periphery of the flame, so that stable combustion without lift is performed. In addition, the heat receiving section 5
8 is heated by the flame formed in the combustion part 55 of the burner part 55, and the vaporizing chamber 46 is heated by the heat recovery action from the flame.
Is maintained at a certain temperature or higher, and it is possible to reduce a part or all of the current supply to the heater 51.

The vaporizing section 41 inserts a vaporizing filter into the vaporizing chamber 46 of the vaporizing section 41 in which the vertical shape of the burner mounting section 42 and a part of the internal vaporizing chamber 46 are simultaneously forged. At the same time, a separate cap 46A provided with a fuel supply port for supplying fuel is attached to the end of the vaporizing chamber 46 on the opposite side of the nozzle, so that the vaporizing part (burner receiving seat) 41 is provided. Saves the labor of processing,
Post-processing such as cutting becomes almost unnecessary, and the cross-sectional shape of the vaporizing chamber 46 into which the vaporizing filter is inserted can be made into a shape suitable for vaporizing, for example, by making the cross-sectional shape substantially flat, thereby stabilizing vaporizing and stabilizing combustion. In addition, the tarification of the vaporized gas can be suppressed, and the life of the tar can be prolonged.

Further, through a communication port 45 communicating with the nozzle 43, a substantially flat vaporizing chamber 46 having a tip portion located near the burner mounting portion 42 for vaporizing fuel is formed in the outer peripheral direction from the burner receiving seat 42. Since the combustion heat of the burner 55 is transmitted to the vaporization chamber 46 through the burner mounting part 42 because the heat is extended and integrally formed, the vaporization chamber is subjected to the temperature gradient generated by the path of the conduction heat. The temperature near the fuel supply port 47 of the fuel supply port 47 can be lowered and the temperature near the nozzle 43 can be raised. The temperature can be set to a temperature near or higher than the end point temperature.

Since the temperature near the fuel supply port 47 is close to or lower than the initial fuel pool temperature, the fuel supplied to the vaporization chamber 46 is supplied to the fuel supply port 47.
The vaporization does not start in the inlet or the oil supply pipe 35, but flows to the vaporization filter 48A near the fuel supply port 47 and is vaporized there, and the fuel is vaporized only in the vicinity of the fuel supply port 47 and locally. There is no need to worry about clogging.

The heat supplied to the vaporizing chamber 46 is transferred to the vaporizing chamber 46 by a wide heat transfer surface because the vaporizing chamber 46 has a substantially flat shape, and the distance between the upper and lower vaporizing chamber 46 wall and the central portion is increased. And the temperature difference is small, so that ideal heating can be performed.

Since the fuel entering through the fuel supply port 47 has a substantially flat shape in the vaporization chamber 46, the fuel spreads in the lateral direction and is diffused, and is gradually vaporized while reaching the nozzle 43 while being vaporized. To evaporate. At this time, since the temperature near the fuel supply port 47 is set to a temperature close to or lower than the initial storage point temperature of the fuel, the fuel that has entered through the fuel supply port 47 goes slightly ahead of the fuel supply port 47 and also in the lateral direction. Since the vaporization is started from the spread and diffused portion, and the temperature near the nozzle 43 is set to a temperature close to or higher than the end-point temperature of the fuel, the fuel is supplied to the nozzle 4.
The vaporization is completed before the position of 3.

Further, a vaporizing filter is provided in the vaporizing chamber 46.
The space 50 is provided between the secondary vaporization filter 48B on the nozzle 43 side and the primary vaporization filter 48A on the fuel supply port 47 side. The vaporizing filter 48A can be mechanically divided as a primary vaporizing section, and the secondary vaporizing filter 48B on the nozzle 43 side can be mechanically divided as a secondary vaporizing section. The primary vaporizing section is mainly a vaporization promoting section and the secondary vaporizing section is a vaporizing section. By functioning as a tar collecting portion for a high-boiling component or the like that does not vaporize the gas more completely and does not vaporize, the vaporization can be stabilized and the combustion can be stabilized.

Further, since the ring-shaped spacer 49 is provided between the secondary vaporizing filter 48B and the primary vaporizing filter 48A, the space 50 becomes the spacer 49, the shape of the space 50 is stabilized, and the primary vaporization is performed. The filter 48A is used as a primary vaporizer and the secondary vaporizer 4
8B can be structurally and strictly divided as a secondary vaporizing portion, and further stabilize vaporization and stabilize combustion.

Further, the vaporizing filters 48A, 48
In the space 50 formed by the spacer 49 between B and B, a part of the large particles of the tar component generated without being vaporized by the primary vaporization filter 48A accumulates and the amount of the tar component sent to the secondary vaporization filter 48B. Therefore, clogging of the secondary vaporization filter 48B on the nozzle 43 side can be reduced.

That is, since the vaporization chamber 46 has a substantially flat shape, the temperature difference between the wall surface and the central portion is small, and the temperature near the fuel supply port 47 can be reduced to a value close to or lower than the temperature of the initial fuel collection point on a wide heat transfer surface. The temperature in the vicinity of the nozzle 43 is set to a temperature close to or higher than the end-point temperature of the fuel.
Since it is mechanically and thermally divided into the secondary vaporization section, it stabilizes vaporization to stabilize combustion and supplies fuel to the fuel supply port 4.
7 causes local clogging due to vaporization only, or insufficient vaporization due to lack of heat, making it easy to produce tar, or causing fuel to be ejected from the nozzle 43 as a liquid, resulting in poor vaporization. There is no fear of occurrence, and the tarification of the vaporized gas can be suppressed, and the storage amount can be increased to extend the life of the tar, and the tar performance can be improved.

Since both the primary vaporizing filter 48A and the secondary vaporizing filter 48B are made of foamed metal having a porosity of 90% or more, the pores can be made uniform and dense, and the porosity is large. Further, since it is made of a metal material having good heat conductivity, it is possible to raise the temperature to the inside, it is possible to increase the vaporization area and to promote the vaporization, and the primary vaporization filter 48A and the secondary vaporization filter 48B Both outer peripheries are compressed into the cross-sectional shape of the vaporizing chamber 46, the tissue becomes denser, and the heat conduction is improved, so that the temperature of the inner wall of the vaporizing chamber 46 can easily reach the center, and vaporization can be further promoted.

Further, when the foamed metal is subjected to a shearing process such as a punching press to form a predetermined shape, the end portion is compressed at an inclination of about 45 °, and the portion becomes clogged. In addition, there is a concern that laser processing, etc., takes a long processing time and increases the cost, and because of the foamed shape, the structure of the end is weak and there is a concern that chips may be generated, but there is a concern that the foamed metal is crushed. The vaporization chamber 46
By pressing and molding to the cross-sectional shape described above, a predetermined shape can be easily obtained.

Since the space 50 between the secondary vaporization filter 48B on the nozzle 43 side and the primary vaporization filter 48A on the fuel supply port 47 side is disposed near the lower part of the heat receiving part 58, the heat receiving part 58 Is transferred by the radiation of the inner wall of the vaporization chamber 46, and the temperature of the space 50 can be raised to a high temperature. Therefore, the primary vaporized gas passing through the space 50 can be radiated by the radiant heat from the inner wall of the vaporization chamber 46. Heating can be performed at a high temperature without passing through a vaporization filter, and further, vaporization can be stabilized and combustion can be stabilized.

Further, the temperature in the vicinity of the fuel supply port 47 is set to be close to or lower than the initial storage point temperature of the fuel, and a space 50 is provided in the vicinity of the fuel supply port 47 of the primary vaporization filter 48A on the fuel supply port 47 side. Therefore, the fuel supplied to the vaporization chamber 46 flows through the space 50 near the fuel supply port 47 to the primary vaporization filter 48A, where it is vaporized, and the fuel is vaporized only near the fuel supply port 47. This eliminates the risk of local clogging. Further, impurities such as minute dust contained in the fuel are supplied and gradually accumulated, and the primary vaporization filter 48 facing the fuel supply port 47 is provided.
Although it may accumulate on the surface of A and hinder the fuel from flowing into the vaporization chamber 46, there is a possibility that a fuel supply defect or the like may occur.
The presence of the space 50 in the vicinity of the fuel supply port 47 allows the aforementioned impurities to accumulate in that portion, and further enlarges the surface of the primary vaporization filter 48A facing the fuel supply port 47. Clogging can be prevented.

(Embodiment 2) FIG. 4 is a detailed view of a main part of a combustion apparatus according to Embodiment 2 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

In the combustion apparatus of the second embodiment, both the primary vaporizing filter 48A and the secondary vaporizing filter 48B are made of foamed metal having a porosity of 90% or more, and the primary vaporizing filter 48A and the secondary vaporizing filter 48B And vaporization holders 61A and 61B made of metal having high thermal conductivity are disposed between the outer periphery and the inner surfaces of both vaporization chambers 46.

The primary vaporizing filter 48A and the secondary vaporizing filter 48B are both made of foamed metal having a porosity of 90% or more, and the primary vaporizing filter 4
8A, vaporizing holders 61A and 61B having high thermal conductivity between the outer periphery of the secondary vaporizing filter 48B and the inner surface of the vaporizing chamber 46.
, The vaporizing filters 48A and 2
Vaporization holder 61 with secondary vaporization filter 48B inserted
A and 61B can be pressed into the vaporization chamber 46 and brought into close contact with the inner wall thereof, and the temperature of the inner wall of the vaporization chamber 46 can easily reach the center of the primary vaporization filter 48A and the secondary vaporization filter 48B. Be able to promote.

Further, the sectional shape of the primary vaporizing filter 48A and the secondary vaporizing filter 48B is structurally smaller than the sectional shape of the vaporizing chamber 46, so that the primary vaporizing filter 48A,
Since the space 50 between the secondary vaporizing filters 48B is widened, the tar storage volume in the space 50 is increased, and the secondary vaporizing section, that is, the secondary vaporizing filter 48B is separated by one step from the inner wall of the vaporizing chamber 46 by the vaporizing holder. Therefore, the stepped portion serves as a weir and dams the insufficiently vaporized fuel. Further, the vaporization is stabilized, and the vaporized gas ejected from the nozzle 43 is stably ejected and the combustion is stabilized. I can plan.

(Embodiment 3) FIG. 5 is a detailed view of a main part of a combustion apparatus according to Embodiment 3 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

In the combustion apparatus of the third embodiment, the primary vaporizing filter 48A and the secondary vaporizing filter 4
8B and the fuel supply port 4
A part of or a whole of the insertion hole of the primary vaporization filter 48A on the seventh side is made smaller than a part or whole of the insertion hole on the nozzle 43 side.
The cross-sectional shape of the insertion hole of the secondary vaporization filter 48B is formed, and the length L2 of the secondary vaporization filter 48B is longer than the length L1 of the insertion hole of the secondary vaporization filter 48B.
Is shortened, and the shorter portion is used as the secondary vaporizing filter 48B and 1
The configuration is such that it is a space 50 for the secondary vaporization filter 48A.

The primary vaporizing filter 48A and the secondary vaporizing filter 48B are divided and disposed in the vaporizing chamber 46, and the primary vaporizing filter 48A on the side of the fuel supply port 47 side has the insertion hole sectional shape. The cross-sectional shape of the insertion hole of the secondary vaporization filter 48B on the nozzle 43 side is configured to be partially or entirely smaller, and the secondary vaporization filter 48B is longer than the longitudinal length L1 of the insertion hole of the secondary vaporization filter 48B. The length L2 of the first and second vaporization filters 48B and 48A is made to be a space 50 between the first and second vaporization filters 48B and 48A. When installing, the primary vaporization filters 48A and 48A
Since the positioning of the secondary vaporization filter 48B is not required, the configuration is simplified. Also, the cross-sectional area of the secondary vaporization filter 48B on the nozzle 43 side becomes smaller than other parts,
The resistance when the vaporized gas of the fuel passes increases, and it becomes difficult for the supplied fuel to pass with insufficient vaporization. Therefore, the production of tar of defective fuel is easily performed on the fuel supply port 47 side, and the vaporized gas reaching the nozzle 43 is
Because it will not contain insufficiently vaporized fuel vaporized gas,
The vaporized gas ejected from the nozzle 43 is ejected stably, and the combustion becomes stable. Further, since the nozzle 43 side of the vaporization chamber 46 is formed as a small hole, the heat transfer area is larger than the other parts, and the distance to the center of the secondary vaporization filter 48B is shorter. , And the tar is easily collected as a secondary vaporization part.

(Embodiment 4) FIG. 6 is a detailed view of a main part of a combustion apparatus according to Embodiment 4 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

In the combustion apparatus according to the fourth embodiment, a spacer disposed between the primary vaporization filter 48A and the secondary vaporization filter 48B is connected to a vaporization net 62 made of a metal net and disposed along the inner wall of the vaporization chamber 46. There is a configuration.

The vaporizing net 62 disposed between the primary vaporizing filter 48A and the secondary vaporizing filter 48B is made of a metal net disposed along the inner wall of the vaporizing chamber 46. The effect is obtained, and when the fuel that has not been vaporized flows out from the primary vaporization filter 48A on the side of the fuel supply port 47, the fuel flows along the inner wall of the vaporization chamber 46 and is diffused by the vaporization net 62 to promote the vaporization. Further, the vaporization of the fuel in the space 50 where the temperature becomes high causes film boiling, which tends to cause instability of vaporization such as a pulse, but the film net 62 can suppress the film boiling,
The vaporized gas ejected from the nozzle 43 is ejected stably, and the combustion becomes stable.

(Embodiment 5) FIG. 7 is a detailed view of a main part of a combustion apparatus according to Embodiment 5 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

In the combustion apparatus of the fifth embodiment, the spacer provided between the primary vaporization filter 48A and the secondary vaporization filter 48B is provided with the secondary vaporization filter 48 on the nozzle 43 side.
B and the primary vaporization filter 48A on the fuel supply port 47 side
The configuration uses a vaporization diffusion filter 63 having a lower density.

Then, the vaporization diffusion filter 63 disposed between the primary vaporization filter 48A and the secondary vaporization filter 48B is connected to the secondary vaporization filter 48B on the nozzle 43 side and the primary vaporization filter 4 on the fuel supply port 47 side.
Since the density is lower than 8A, the vaporization promoting effect of the fourth embodiment can be obtained similarly, the primary vaporization filter 48A on the fuel supply port 47 side is used as the primary vaporization section, and the secondary vaporization on the nozzle 43 side is used. The vaporizing filter 48B is a secondary vaporizing section,
Further, the vaporization diffusion filter 3 having a low density therebetween is structurally divided as an intermediate portion in which the vaporization promotion and trapping portions are mixed, and insufficient vaporization contained in the vaporized gas from the primary vaporization filter 48A on the fuel supply port 47 side. The fuel can be collected by the vaporization diffusion filter 63 to promote vaporization, and the space 50
The fuel passing through the entire area can be diffused to promote vaporization.

(Embodiment 6) FIG. 8 is a detailed view of a main part of a combustion apparatus according to Embodiment 6 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

In the combustion apparatus of the sixth embodiment, a spacer provided between the primary vaporization filter 48A and the secondary vaporization filter 48B is provided with a secondary vaporization filter 48 on the nozzle 43 side.
The vaporization diffusion filter 64 is made of the same material as B and the primary vaporization filter 48A on the side of the fuel supply port 47 and has a reduced cross-sectional shape, and a space 64A is provided around it.

Then, the vaporization diffusion filter 64 disposed between the primary vaporization filter 48A and the secondary vaporization filter 48B is connected to the secondary vaporization filter 48B on the nozzle 43 side and the primary vaporization filter 48A on the fuel supply port 47 side.
The same material as above, with a small cross-sectional shape, and a space 64A around it
Is provided, the effect of the fifth embodiment is similarly obtained, and the cross-sectional shape is reduced and there is a space 64A, so that the primary vaporization filter 48A on the fuel supply port 47 side is used as the primary vaporization unit, The secondary vaporization filter 48B on the 43 side is
When the unvaporized fuel flows out of the primary vaporization filter 48A on the side of the fuel supply port 47, most of the gas is vaporized because it is made of the same material as the primary vaporization filter 48A. It flows through the diffusion filter 64 to the secondary vaporization filter 48B on the nozzle 43 side, and in the process, is further diffused by the vaporization diffusion filter 64 to be promoted. In addition, the fuel that does not pass through the vaporization diffusion filter 64 is accumulated in the space 64A as a tar component such as a bad kerosene having a specific gravity that is insufficiently vaporized, and as a result, the gasification of the vaporized gas is further suppressed and the amount stored is reduced. , The life of the tar can be extended, and the tar performance can be improved.

(Embodiment 7) FIG. 9 is a detailed view of a main part of a combustion apparatus according to Embodiment 7 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

The combustion apparatus of the seventh embodiment has a structure in which the spacer provided between the primary vaporization filter 48A and the secondary vaporization filter 48B is a vapor-shaped thin metal-plate-like vaporization spacer 65 having good heat conductivity. .

Since the vaporizing spacer provided between the primary vaporizing filter 48A and the secondary vaporizing filter 48B is a thin metal plate having a corrugated heat conductivity, the effect of the spacer of the first embodiment can be obtained. At the same time, the vaporizing spacer 65 becomes high in temperature due to the radiation of the inner wall of the vaporizing chamber 46, and the vaporized gas from the primary vaporizing filter 48A comes into contact therewith, so that the vaporized gas can be further heated and the vaporization of insufficiently vaporized gas can be promoted. In addition, it is possible to suppress the conversion of the vaporized gas into tar and increase the capacity of the vaporized gas to extend the life of tar, thereby improving the tar performance.

(Eighth Embodiment) FIG. 10 is a detailed view of a main part of a combustion apparatus according to an eighth embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

In the combustion apparatus according to the eighth embodiment, a spacer provided between the primary vaporization filter 48A and the secondary vaporization filter 48B is provided with the secondary vaporization filter 48 on the nozzle 43 side.
B and a primary vaporizing filter 48A on the side of the fuel supply port 47 are mounted on both ends, and the vaporizing spacer 66 is formed as a thin metal plate and formed by bending into a convex shape having a step in the space 50.

Then, the vaporizing spacer 66 disposed between the primary vaporizing filter 48A and the secondary vaporizing filter 48B is attached to the secondary vaporizing filter 48B on the nozzle 43 side.
And the primary vaporizing filter 48A on the side of the fuel supply port 47 is mounted on both ends, and the vaporizing spacer 66 is formed by bending into a convex shape having a step in the space 50, so that the effect of the spacer of the first embodiment is obtained. Is obtained, and at the time of production of the vaporization chamber, the primary vaporization filter 48A and the secondary vaporization filter are simply inserted into the vaporization chamber 46 by inserting the vaporization spacer 66 having the primary vaporization filter 48A and the secondary vaporization filter 48B mounted on both ends. 48B can be inserted at the same time, which saves man-hours.
A, the secondary vaporization filter 48B is protected, and the insertion accuracy such as the size of the space 50 is also improved.

(Embodiment 9) FIG. 11 is a detailed view of a main part of a combustion apparatus according to Embodiment 9 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

In the combustion apparatus according to the ninth embodiment, a spacer provided between the primary vaporization filter 48A and the secondary vaporization filter 48B is provided with a secondary vaporization filter 48 on the nozzle 43 side.
B and the primary vaporization filter 48A on the side of the fuel supply port 47 are mounted on both ends, and a stepped portion is provided in the space 50 to form a vaporized spacer 67 made of a metal molded product having good heat conductivity and a convex cross section. There is a configuration.

Then, the vaporizing spacer 67 disposed between the primary vaporizing filter 48A and the secondary vaporizing filter 48B is attached to the secondary vaporizing filter 48B on the nozzle 43 side.
And a primary vaporization filter 48A on the fuel supply port 47 side is mounted on both ends, and a stepped portion is provided in a space 50. The cross section is a metal molded product having a convex shape and good heat conductivity. The effect of the spacer is obtained, and when the vaporizing chamber is manufactured, the primary vaporizing filter 48A and the secondary vaporizing filter 48A are simply inserted by inserting the vaporizing spacer 67 in which the primary vaporizing filter 48A and the secondary vaporizing filter 48B are placed. Filter 4
8B can be inserted at the same time, thereby reducing man-hours. In addition, the primary vaporizing filter 48A and the secondary vaporizing filter 48B are protected by the vaporizing spacer 67, and the insertion accuracy of the space 50 and the like is improved. Further, heat from the inner wall of the vaporizing chamber 46 can be transferred to the primary vaporizing filter 48A, the secondary vaporizing filter 48B, and the space 50 via the vaporized spacer metal molded product 67, so that a large amount of fuel is temporarily supplied and the primary vaporization is performed. Even if the temperature of the filter 48A and the temperature of the secondary vaporizing filter 48B are going to decrease, the heat capacity of the vaporizing spacer 67 is large, so that the temperature change gradually changes. Since the temperature is corrected, the vaporization performance is stabilized.

(Embodiment 10) FIG. 12 shows Embodiment 1 of the present invention.
FIG. 2 is a detailed view of a main part of the combustion apparatus No. 0. The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

In the combustion apparatus of the tenth embodiment, the secondary vaporizing filter 48B on the nozzle 43 side and the primary vaporizing filter 48A on the fuel supply port 47 side are fastened to a thin fixed plate 68 by fastening means 6.
9 is fixed.

Since the secondary vaporization filter 48B on the nozzle 43 side and the primary vaporization filter 48A on the fuel supply port 47 side are fixed to the thin plate 68 by the fastening means 69, the spacer of the first embodiment is used. The effect is obtained,
When the vaporization chamber is manufactured, the primary vaporization filter 4 is supplied to the vaporization chamber 46.
It is only necessary to insert the fixing plate 68 in which the secondary vaporizing filter 48A and the secondary vaporizing filter 48B are fixed by the fastening means 69, and the primary vaporizing filter 48A, the secondary vaporizing filter 48B and the fixing plate 6
Since 8 is fixed by the fastening means 69, there is no fear that the primary vaporizing filter 48A and the secondary vaporizing filter 48B come off the fixing plate 68, and the assembling property is further improved.

(Embodiment 11) FIG. 13 shows Embodiment 1 of the present invention.
FIG. 2 is a detailed view of a main part of the first combustion device. The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

In the combustion apparatus according to the eleventh embodiment, a space 50 is provided between the secondary vaporizing filter 48B on the nozzle 43 side and the primary vaporizing filter 48A on the fuel supply port 47 side, and the secondary vaporizing filter 48B and the primary vaporizing filter are provided. A thin plate-shaped diffusion filter 70 is provided on the lower surface of 48A and its 50 space.

A space 50 is provided between the secondary vaporization filter 48B on the nozzle 43 side and the primary vaporization filter 48A on the fuel supply port 47 side.
B, the primary vaporizing filter 48A and the diffusion filter 70 in the form of a thin plate are disposed on the lower surface of the space 50, so that the effect of the spacer of the first embodiment can be obtained in the same manner, and the diffusion filter 70 of the fuel supply port 47 side can be obtained. Secondary vaporization filter 48A
As a secondary vaporization part, a part where the secondary vaporization filter 48B on the nozzle 43 side is structurally divided as a secondary vaporization part, and a part which promotes vaporization and diffusion by the diffusion filter 70 which spreads over the entire vaporization chamber 46 are obtained at the same time. As a result, the promotion of vaporization spreads over the entire vaporization chamber 46, and the tarification of the vaporized gas can be suppressed, the storage amount can be increased, and the life of the tar can be prolonged, so that the tar performance can be improved.

Embodiment 12 FIG. 14 shows Embodiment 1 of the present invention.
It is a principal part detailed view in 2 combustion apparatuses. The same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

The combustion apparatus according to the twelfth embodiment has the nozzle 43
Vaporization filter 48B on the side and the fuel supply port 47 side
A diffusion filter 71 is provided on the lower surface of the secondary vaporization filter 48A and the space 50 therebetween, and the secondary vaporization filter 48B and the primary vaporization filter 48A are fixed to the diffusion filter 71 by fastening means 72.

A diffusion filter 71 is disposed on the upper surface, the lower surface, or both surfaces of the primary vaporization filter 48A on the nozzle 43 side and the fuel supply port 47 side and the space 50 therebetween.
Since the secondary vaporizing filter 48B and the primary vaporizing filter 48A are fixed by the fastening means 72, the assemblability of the tenth embodiment is improved, and the vaporization and combustion stability of the eleventh embodiment can be simultaneously obtained.

In the above embodiment, both the secondary vaporizing filter 48B and the primary vaporizing filter 48A are made of foamed metal having a porosity of 90% or more, but either one or both are made of another material. A vaporizing filter may be used, and the configuration of each component may be any configuration as long as the object of the present invention is achieved.

[0138]

As described above, according to the present invention,
The main part constituting the vaporizer is integrally formed by forging as a burner receiving seat. In particular, the vaporization chamber closely related to tar suppression, which is the main object of the present invention, has a substantially flat shape and is close to the heater. The vaporization filter is inserted inside, and a separate cap with a fuel supply port for supplying fuel is attached to the end of the vaporization chamber opposite to the nozzle mounting part. The carburetor saves time and effort for processing, and almost no post-processing such as cutting is required, and the cross-sectional shape of the vaporizing chamber into which the vaporizing filter is inserted can be made suitable for vaporizing. Since the vaporized chamber has a substantially flat shape in the vaporization chamber, the fuel spreads in the lateral direction and is diffused, and is gradually vaporized in the process of reaching the nozzle while promoting vaporization. But In the heat transfer surface, the temperature of the central part is also increased to be heated and vaporized, stabilizing vaporization, stabilizing combustion, and suppressing tarification of vaporized gas to extend the life of tar. become.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a combustion apparatus according to a first embodiment of the present invention.

FIG. 2 is a top view of a main part of the combustion apparatus.

FIG. 3 is a cross-sectional view of a hot air heater using the combustion device.

FIG. 4 is a detailed view of a main part of a combustion apparatus according to a second embodiment of the present invention.

FIG. 5 is a detailed view of a main part of a combustion apparatus according to a third embodiment of the present invention.

FIG. 6 is a detailed view of a main part of a combustion apparatus according to a fourth embodiment of the present invention.

FIG. 7 is a detailed view of a main part of a combustion apparatus according to a fifth embodiment of the present invention.

FIG. 8 is a detailed view of a main part of a combustion apparatus according to a sixth embodiment of the present invention.

FIG. 9 is a detailed view of a main part of a combustion apparatus according to a seventh embodiment of the present invention.

FIG. 10 is a detailed view of a main part of a combustion apparatus according to an eighth embodiment of the present invention.

FIG. 11 is a detailed view of a main part of a combustion apparatus according to a ninth embodiment of the present invention.

FIG. 12 is a detailed view of a main part of a combustion apparatus according to a tenth embodiment of the present invention.

FIG. 13 is a detailed view of a main part of a combustion apparatus according to an eleventh embodiment of the present invention.

FIG. 14 is a detailed view of a main part of a combustion apparatus according to a twelfth embodiment of the present invention.

FIG. 15 is a sectional view of a main part of a conventional combustion device.

FIG. 16 is a sectional view of a main part of another conventional combustion device.

[Explanation of symbols]

 41 vaporization chamber (burner receiving seat) 42 burner mounting part 43 nozzle 43A nozzle mounting part 44 opening 46 vaporization chamber 46A cap 47 fuel supply port 48A primary vaporization filter 48B secondary vaporization filter 51A heater mounting part 55 burner part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kunio Kanda 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. Terms (reference) 3K052 AA07 AB01 AB08 CA03 CA04 CA08 CA09 CA12 CA16

Claims (20)

[Claims] 1. A nozzle mounting portion for mounting a nozzle, a substantially circular burner mounting portion for mounting a burner portion for burning gas ejected from the nozzle, and formed between the burner mounting portion and the nozzle mounting portion. An opening, a heater mounting portion provided on the lower surface side of the burner mounting portion, and a substantially flat vaporizing chamber formed by extending a distal end portion of the heater mounting portion in the outer peripheral direction through a communication port communicating with the nozzle mounting portion. A burner receiving seat is formed, and the burner receiving seat is integrally formed by forging.
The vaporization chamber is disposed along the heater mounting section, a vaporization filter is inserted therein, and a fuel supply port for supplying fuel is disposed at an end of the vaporization chamber opposite to the nozzle mounting section. A combustion device configured by attaching a separate cap. 2. The combustion apparatus according to claim 1, wherein the vaporization chamber has a substantially flat shape, and a vaporization filter having the entire circumference or a part thereof adhered to the inner wall of the vaporization chamber is inserted. 3. A U-shaped heater is mounted so as to extend along substantially a half circumference on the lower surface side of the burner receiving seat on the opposite side of the vaporization chamber, the heater portion is configured to be close to the vaporization chamber, and the fuel supply port is provided. 3. The combustion apparatus according to claim 1, wherein the temperature in the vicinity is near or below the initial storage temperature of the fuel, and the temperature in the vicinity of the nozzle is near or above the temperature of the final storage point of the fuel. 4. A vaporization filter is divided into two in a vaporization chamber, and is disposed between a secondary vaporization filter on a nozzle side and a primary vaporization filter on a fuel supply port side opposite to the vaporization chamber. The combustion device according to claim 1, wherein a space is provided in the first and second portions, and the device is mechanically and thermally divided into a primary vaporization portion and a secondary vaporization portion. 5. The combustion apparatus according to claim 1, wherein one or both of the primary vaporization filter and the secondary vaporization filter are made of a foamed metal having a porosity of 90% or more. 6. Either or both of the primary vaporization filter and the secondary vaporization filter are made of a foamed metal having a porosity of 90% or more, and the outer periphery of the vaporization filter is pressed into a cross-sectional shape of a vaporization chamber. Claim 1,
4. The combustion device according to claim 4. 7. Either or both of the primary vaporizing filter and the secondary vaporizing filter are made of foamed metal having a porosity of 90% or more, and a heat conductive material is provided between the outer periphery of the vaporizing filter and the inner surface of the vaporizing chamber. 6. The combustion device according to claim 1, wherein a high metal vaporization holder is provided. 8. A heat receiving portion for receiving heat of a burner portion is provided near a vaporizer, and a space between a secondary vaporizing filter on a nozzle side and a primary vaporizing filter on a fuel supply port side is provided near a lower portion of the heat receiving portion. 5. The combustion device according to claim 1, wherein the combustion device is disposed. 9. A space is provided in the vicinity of the fuel supply port of the primary vaporization filter on the side of the fuel supply port, and the temperature in the vicinity of the fuel supply port is set to a temperature near or below the initial fuel pool temperature and the temperature in the vicinity of the nozzle portion is set to The combustion apparatus according to claim 1 or 4, wherein the temperature is set at a temperature close to or higher than the end point temperature. 10. A primary vaporization filter and a secondary vaporization filter which are divided and disposed in a vaporization chamber, and a part or the whole of which is smaller than a sectional shape of an insertion hole of the primary vaporization filter on a fuel supply port side. So that the cross-sectional shape of the insertion hole of the secondary vaporization filter on the nozzle side is
The length of the secondary vaporization filter is made shorter than the length of the insertion hole of the secondary vaporization filter in the longitudinal direction, and the shorter portion is used as a space between the secondary vaporization filter and the primary vaporization filter. A combustion device as described. 11. A vaporizing chamber, which is divided into two parts, a primary vaporizing filter and a secondary vaporizing filter, and a spacer is provided between the secondary vaporizing filter on the nozzle side and the primary vaporizing filter on the fuel supply port side. 5. The combustion device according to claim 1, wherein the combustion device is disposed. 12. The vaporizer net according to claim 1, wherein the spacer disposed between the primary vaporization filter and the secondary vaporization filter is a metal net vaporization net disposed along the vaporization chamber wall. Combustion equipment. 13. A spacer disposed between the primary vaporization filter and the secondary vaporization filter serves as a vaporization diffusion filter having a lower density than the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side. The combustion device according to claim 1, 4, or 11. 14. A spacer provided between the primary vaporization filter and the secondary vaporization filter is made of the same material as the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side, and has a reduced cross-sectional shape. A structure in which a diffusion filter is provided and a space is provided around the diffusion filter.
2. The combustion device according to 1. 15. The vaporizer according to claim 1, wherein the spacer provided between the primary vaporization filter and the secondary vaporization filter is a thin metal-plate-like vaporization spacer having a corrugated heat conductivity.
12. The combustion device according to item 11. 16. A spacer disposed between the primary vaporization filter and the secondary vaporization filter has a secondary vaporization filter on the nozzle side and a primary vaporization filter on the fuel supply port side mounted on both ends, and is provided in a space. The combustion apparatus according to claim 1, 4 or 11, wherein the vaporization spacer is a thin metal plate-like vaporizing spacer formed by being bent into a convex shape having a step portion. 17. A spacer disposed between the primary vaporization filter and the secondary vaporization filter has a secondary vaporization filter on the nozzle side and a primary vaporization filter on the fuel supply port side mounted on both ends, and is provided in a space. The combustion device according to claim 1, 4 or 11, wherein the stepped portion has a convex cross section and serves as a vaporizing spacer for a metal molded product such as a cut product having good heat conductivity. 18. The combustion apparatus according to claim 1, wherein the secondary vaporizing filter on the nozzle side and the primary vaporizing filter on the fuel supply port side are fixed to a thin fixing plate by fastening means. 19. A space is provided between the secondary vaporization filter on the nozzle side and the primary vaporization filter on the fuel supply port side, and a thin plate is provided on the upper surface, lower surface, or both surfaces of the secondary vaporization filter, the primary vaporization filter, and the space. 5. The combustion device according to claim 1, further comprising a diffusion filter in a shape of a circle. 20. A diffusion filter is provided on an upper surface, a lower surface, or both surfaces of a secondary vaporization filter on a nozzle side, a primary vaporization filter on a fuel supply port side, and a space therebetween, and a primary vaporization filter is provided on the diffusion filter. 20. The combustion device according to claim 1, wherein the secondary vaporization filter is fixed by fastening means.