JPH0868509A - Combustion device - Google Patents

Abstract

PURPOSE: To attain a desired combustion while a combustion device is made compact and to prevent vaporized gas from being tarred. CONSTITUTION: A combustion device comprises a circular burner bearing seat 12 for mounting and holding a burner part on a vaporizing part 11, a nozzle part 13 disposed so as to be located at a substantially central part of the burner bearing seat 12. an opening provided between the burner bearing seat 12 and the node part 13 for feeding air to the burner part, a vaporizing chamber 16 cicumferentially extended through a communicating port 15 which communicates with the nozzle part 13 and formed integrally therewith and a U-shaped heater 19, whose heater part is separated from the vaporizing chamber 16, provided so as to extend along a substantially half of the periphery of the underside of the burner bearing seat 12 opposite to the vaporizing chamber 16. Accordingly. the vaporizing part can be designed to have a compact form, so that a desired combustion can be attained while maintaining its compact form.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus which vaporizes a liquid fuel and ejects the vaporized gas from a nozzle to burn it.

[0002]

2. Description of the Related Art Conventionally, in this type of combustion apparatus, as shown in FIG. 4, fuel is supplied from a cartridge tank 29 to a tank 28, and the fuel in the tank 28 is supplied to a vaporization section 31 by a pump 30. Then, it is vaporized in the vaporizing section 31 to become fuel gas, which is ejected horizontally from the nozzle section 32. The fuel ejected from the nozzle portion 32 is ejected into the mixing pipe 33 provided separately on the downstream side of the vaporizing portion 31 while sucking the primary air by the ejector effect, and is mixed there to be integrated with the mixing pipe 33. It is supplied to the line-shaped burner section 34 and burned there. The generated combustion gas is guided upward by a combustion cylinder 35 arranged so as to cover the periphery of the burner portion 34, and a duct 36 covering the combustion cylinder 35 guides the blower 3
It is mixed with the indoor air flow from 7 and discharged as warm air for heating. And this combustion device is a pump 30
When the fuel supply amount is adjusted by changing the driving frequency and the applied voltage of the fuel cell, the primary air amount also increases / decreases, and the combustion amount can be changed while the fuel / air ratio is kept constant.

[0003]

However, in the combustion apparatus having such a structure, since the burner portion 34 has a horizontally long line shape, it is difficult to make the flame uniform on the left and right, and the combustion at both ends tends to be disturbed. However, since the combustion flame is blown directly above, it is difficult to suppress the flow, and lift combustion is likely to occur. In addition, there is also a problem that the burner portion 34 is easily deformed due to the nonuniform temperature because of the line shape even with age. Further, since the mixing tube 33 and the burner section 34 are arranged apart from the vaporization section 31, the heat of the burner section 34 is removed from the vaporization section 31.
There is also a problem in that it is difficult to take a configuration for collecting the components, and the burner unit 34 is horizontally long, so that the size of the device is also horizontally long.

Conventionally, in order to solve such a problem, a combustion apparatus as shown in FIG. 5 has been proposed. That is, in this combustion device, the pump 39 is attached to the upper surface of the tank 38, and one end of the oil feed pipe 40 is connected to the pump 39. The other end of the oil supply pipe 40 has a circular vaporizing section 4
Oil sent from the tank 38 by the pump 39 is sent to the vaporization chamber 42 formed in the vaporization section 41.

The vaporization chamber 42 has a doughnut-shaped configuration in which a mixing tube 43 is arranged in the center of the vaporization chamber 42, and the heater 44 is embedded in the peripheral wall of the vaporization chamber 42. A communication passage 46 communicating with the nozzle portion 45 is provided on the side opposite to the mixing pipe 43 with respect to the inlet of the oil feeding pipe 40.

A return pipe 47 is attached to the nozzle portion 45, and an electromagnetic solenoid 48 is connected to the other end of the return pipe 47. The side of the electromagnetic solenoid 48 opposite to the return pipe 47 is communicated with the tank 38, and the electromagnetic solenoid 48 is provided with a needle 49 for opening and closing the nozzle hole 50 of the nozzle 45.

A burner cylinder 51 placed above the vaporization section 41 is provided so as to cover the outlet of the mixing pipe 43, and is vaporized by a combustion flame formed in a flame hole 52 formed in the peripheral wall of the burner cylinder 51. The flange 53 above the portion 41 is configured to be heated.

In the above structure, the vaporization chamber 42 is provided with the heater 4
4 is heated to a predetermined temperature by 4 and the oil that has entered from the inlet of the oil feed pipe 40 is vaporized in the process of reaching the communication passage 46. The vaporized gas flows downward through the communication passage 46 at the bottom of the vaporization chamber 42 and reaches the nozzle portion 45.

When the vaporizing section 41 reaches a predetermined temperature, the needle 49 is opened and the vaporized gas is discharged into the nozzle hole 5.
Eject from 0. The vaporized gas vigorously flows toward the mixing pipe 43 provided at the center of the vaporizing section, and accordingly, primary air is entrained between the lower end of the mixing pipe 43 and the nozzle portion 45 to reach the inside of the burner cylinder 51 from the outlet of the mixing pipe 43. The mixture is mixed and ignited on the outer periphery of the burner cylinder 51 to generate a combustion flame for combustion.

In the combustion device having such a structure, the mixing pipe 4
The mixed gas flows back around the outer circumference of No. 3, and the mixed gas is uniformly ejected from a plurality of flame holes 52 provided in the lower peripheral wall of the burner section for combustion, so that the flame becomes uniform and the combustion flame is spread in the outer circumferential direction. Although it is jetted out, the lift flame can be suppressed with a simple structure in which the burner ring 54 is provided on the outer periphery of the combustion flame so that the combustion flame flows upward. Then, the vaporization section 41 is heated by the combustion flame formed in the flame holes 52 formed in the peripheral wall of the burner cylinder 51 at the upper flange 53 thereof, and the vaporization section 41 is heated by the heat conduction from the burner cylinder 51, Due to the heat recovery action, the vaporization is continued even if the heater 44 is not energized, and the combustion is continued, that is, self-combustion, and power saving is achieved.

However, the above conventional structure has the following problems. That is, since the vaporization section 41 is formed so as to surround the mixing tube 43 so as to surround it, the vaporization section 41 itself becomes large, making it difficult to make the vaporization section 41 compact and increasing the heat capacity of the vaporization section 41. There is a problem that it takes time to heat the vaporization section 41 at the time of operation to a predetermined temperature, that is, it takes a long time to ignite.

Further, a vaporization section 41 surrounding the mixing tube 43
Is a donut-shaped disk, it becomes difficult to fill the vaporization chamber 42 with a vaporization element for smoothing the vaporization of fuel and suppressing the generation of tar, and the vaporization element selection is limited. Further, since the temperature gradient in the vaporization chamber 42 cannot be provided and the temperature in the vicinity of the inlet of the oil feed pipe 40 in the vaporization chamber 42 and the temperature of the nozzle portion 45 side become almost the same, the vaporized gas of When the temperature is raised, the vaporization chamber 42 vaporizes near the inlet of the oil feed pipe 40, and tar is generated at that portion to prevent fuel from entering the vaporization chamber 42. Especially in the case of weak combustion with low latent heat of vaporization, the pump 3
Since the fuel supply capacity of No. 9 is also small, it is more likely to accumulate in the vicinity of the inlet of the oil feed pipe 40 in the vaporization chamber 42, and synergistically deteriorates the tar characteristic. Therefore, if you try to lower the vaporization temperature, the temperature of the vaporized gas will also decrease, and in the strong combustion that requires a large amount of latent heat of vaporization, the vaporization state will become insufficient and combustion will become unstable, so it cannot be lowered so much. There was a problem that it was not possible to sufficiently improve the performance.

Further, since the nozzle portion 45 wraps around the lower surface side of the vaporizing portion 41 and is separated from the vaporizing portion 41, the vaporizing portion 41 and the nozzle portion 45 are thermally separated from each other, and the temperature of the nozzle portion 45 is increased. As the nozzle portion 45 is located below the vaporization chamber 42, the vaporized gas that has become high temperature stays in the upper portion of the vaporization chamber 42, and the low-temperature unvaporized gas or oil is in the lower communication passage 46. The vaporized gas does not easily flow through the nozzle portion 45 via the gas passage, and the low temperature gas and the low temperature of the nozzle portion 45 cause the vaporized gas to tar easily from the communication passage 46 to the nozzle portion 45, and the combustion is difficult. There was a problem that it was not stable.

The first object of the present invention is to solve the above-mentioned problems, and it is a first object of the present invention to achieve a good combustion while achieving a compact combustion device. The ignition time is achieved while making the most of the advantage of power saving by heat recovery. Is the second purpose, and the third purpose is to further suppress the tar formation of the vaporized gas.

[0015]

In order to achieve the above object, the present invention has a vaporization section for vaporizing fuel, a heater for heating the vaporization section, a nozzle section for ejecting the vaporized gas in the vaporization section, and a nozzle. A burner section for burning the gas ejected from the section, the vaporization section is provided with a circular burner receiving seat for mounting and holding the burner section, and the nozzle section is arranged so as to be located substantially in the center of the burner receiving seat. An opening for supplying air to the burner portion is provided between the burner receiving seat and the nozzle portion, and a cylindrical fuel whose tip is located near the burner receiving seat via a communication port communicating with the nozzle portion. A vaporization chamber for vaporizing the fuel vapor is extended integrally in the outer peripheral direction, and a fuel supply port for supplying fuel is provided at the end of the vaporization chamber on the opposite side of the nozzle portion. Side burner seat It disposed a U-shaped heater along approximately half lap side the heater portion is are constituted away from the vaporization chamber.

Further, the opening for taking in the primary air is hollowed out except for a rib portion provided with a temperature detecting means for detecting a temperature extending from the burner mounting portion to the nozzle portion mounting portion. The communication port and the vaporization chamber are arranged in a line.

Further, a vaporizing section for vaporizing the fuel,
A heater that heats this vaporization section, a nozzle section that ejects the gas vaporized in the vaporization section, a burner section that burns the gas ejected from the nozzle section, and a combustion exhaust gas generated in the burner section that covers the burner section and is directed upward. A combustion cylinder and a duct that covers the combustion cylinder and mixes the combustion exhaust gas and the indoor air flow from the blower to generate hot air, and the vaporization unit is provided with a circular burner seat for mounting and holding the burner unit. The nozzle portion is arranged so as to be located substantially in the center of the burner receiving seat, an opening for supplying air to the burner portion is provided between the burner receiving seat and the nozzle portion, and a communication port communicating with the nozzle portion is provided. A cylindrical vaporizing chamber for vaporizing the fuel, the tip of which is located in the vicinity of the burner receiving seat, is extended and disposed in the outer peripheral direction, and the fuel is supplied to the end of the vaporizing chamber opposite to the nozzle portion. Distribute fuel filler And, and, it is configured to cool the fuel supply port side of the vaporizing chamber in air flow from the convection blower.

[0018]

According to the present invention, since the burner seat, the nozzle mounting portion, the primary air intake opening and the vaporizing chamber are integrally formed in the vaporizing portion as described above, the vaporizing portion can be designed in a compact shape. In addition, it is possible to reduce the cost and the ignition time while making the most of the advantage that the heat of the burner section is transferred from the burner receiving seat to save power.

Further, a U-shaped heater is arranged along the lower half 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 vapor is transmitted to the vaporization chamber via the burner seat, the temperature gradient generated by the path of the conduction heat can lower the temperature on the inlet side of the vaporization chamber and increase the temperature on the outlet side. Can be improved.

Further, the nozzle portion is located above the vaporizing portion, the vaporized gas smoothly flows toward the nozzle portion above the vaporizing chamber, and the vaporized gas is completely vaporized at a high temperature. Since the vaporized gas of No. 2 flows toward the nozzle portion, the vaporized gas is hardly tarified at the nozzle portion, and the tar performance can be improved.

Further, the primary air intake opening is hollowed out leaving a rib portion provided with temperature detecting means for detecting the temperature extending from the burner receiving seat to the nozzle portion mounting portion, and the rib portion, the nozzle portion, the communication port and the vaporization. When the chambers are arranged in a straight line, it is easier to raise the temperature on the outlet side by the conduction heat of the ribs, and the temperature can be controlled by the temperature detection means provided in the ribs. The intake openings are even, the air flow to the burner is uniform, and the combustion stability is further maintained.

Further, in addition to the above-mentioned structure, in the structure in which the air flow from the convection blower cools the oil supply port of the vaporization chamber, the oil supply port of the vaporization chamber is directly cooled by the convection blower. With the temperature gradient generated by cooling, the temperature on the inlet side of the vaporization chamber can be lowered and the temperature on the outlet side can be raised, further improving the tar property.

[0023]

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

First, referring to FIGS. 1, 2 and 3, the structure of a hot air heating apparatus using the combustion apparatus of the present invention will be described.
The main body case is provided with a tank 2 holding a liquid fuel on the lower side thereof and a detachable cartridge tank 3 above the tank 2. Reference numeral 4 denotes a pump mounted on the upper surface of the tank 2 and adapted to supply fuel from the upper end thereof to the combustion device 6 via the oil supply pipe 5.

Reference numeral 7 is a combustion cylinder for guiding the combustion gas from the combustion device 6 upward, and a blower 8 for taking in and delivering the indoor air flow is arranged at the back of the combustion cylinder. Reference numeral 9 is a duct for mixing the combustion gas from the combustion cylinder 7 and the indoor air flow to generate warm air. 1
Reference numeral 0 is a control unit for controlling the combustion of the combustion device 6 and the blower 8. The control unit 0 controls the pump 4, the blower 8 and the like in a predetermined sequence based on the operating condition signal input from the operation unit. .

Next, the structure of the combustion device 6 will be described.
Reference numeral 11 denotes a vaporization portion, which is provided with a circular burner receiving seat 12 on an upper portion thereof, and a nozzle portion 13 is arranged so as to be located substantially in the center of the burner receiving seat 12, and between the burner receiving seat 12 and the nozzle portion 13. An opening 14 for taking in primary air for supplying combustion air is provided, and a cylindrical vaporization chamber 16 whose tip portion is located in the vicinity of the burner receiving seat 12 via a communication port 15 communicating with the nozzle portion is provided. It is formed integrally by being extended in the outer peripheral direction. The vaporization chamber 16 is provided with a vaporization element 17 for increasing the vaporization efficiency of fuel, and an oil supply port 18 for supplying fuel is provided at the end portion on the opposite side of the nozzle portion 13. Further, a U-shaped heater 19 is disposed along the lower surface side of the burner receiving seat 12 on the opposite side of the vaporization chamber 16 of the vaporization section 11 and the heater 19 portion is separated from the vaporization chamber 16. I am doing it. Further, the opening for intake of the primary air extends from the burner mounting portion to the nozzle mounting portion, and the rib portion 2 is provided with temperature detecting means for detecting the temperature.
1 is left out and the rib portion 21 and the nozzle portion 1 are cut out.
3, the communication port 15 and the vaporization chamber 16 are arranged in a straight line.

The vaporizing section 11 is provided with a convection blower 8
Is configured to be cooled from the oil supply port 18 side of the vaporization chamber 16 by the air flow from the.

Reference numeral 22 denotes a bottomless cylindrical mixing tube placed on the burner receiving seat 12 so as to be located above the nozzle portion 13.
The upper part is formed in a tapered shape with a slightly larger diameter. The mixing pipe 22 has an inlet portion formed in a throat shape, faces the nozzle portion 13, and has a nozzle portion 1
The fuel gas ejected from No. 3 and the primary air sucked by the ejector effect due to the ejection of the fuel gas are mixed.

Reference numeral 23 denotes a burner cylinder having a cylindrical shape which is covered with the burner receiving seat 12 from the upper opening side so as to cover the mixing pipe 22, and has a plurality of flame holes 24 provided in the lower peripheral wall.
5 is formed. Reference numeral 26 denotes an upwardly tapered burner ring attached to the burner receiving seat 12 so as to surround the outer periphery of the flame hole 24, and 27 denotes a heat receiving flange formed on the burner receiving seat 12.

In the above structure, the cartridge tank 3
The liquid fuel supplied from the tank 2 to the tank 2 so as to maintain a constant oil level is sucked up from the tank 2 by the pump 4 and sent to the vaporization chamber 16 of the combustion device 6 via the oil supply pipe 5 and the oil supply port. The sent fuel is vaporized in the vaporization chamber 16 kept at a predetermined temperature or higher by the heater 19 and becomes high-pressure fuel gas and is ejected from the nozzle portion 13. At that time, the vaporization chamber 16 is sucked by the ejector effect while sucking the primary air. Is mixed in a mixing pipe 22 provided on the downstream side of the above, is supplied into a burner cylinder 23, is ejected from a flame hole 24, and is burned in a combustion section 25.
Then, the generated combustion gas flows above the combustion cylinder 7,
In the duct 9, it is mixed with the indoor air flow from the blower 8 and discharged as warm air for heating. Then, the control unit 10 controls the heater 1 based on the condition set by the operation unit.
9, the pump 4, the blower 8 and the like are controlled in a predetermined sequence to perform operation control such as starting and stopping the operation and varying the combustion amount.

Here, the combustion in the burner cylinder 23 will be described a little further. The fuel gas ejected from the nozzle portion 13 sucks the primary air due to the ejector effect, and the mixing pipe 22 provided on the downstream side of the vaporization chamber 16 It flows into the inside and is mixed here, discharged from the upper opening of the mixing tube 22 into the burner cylinder 23, and flows back around the outer circumference of the mixing tube 22,
Many flame holes 2 provided in the combustion section 25 below the burner cylinder 23
Eject from 4 and burn.

At this time, the mixed gas is returned to the burner cylinder 23 and flows around the mixing tube 22. In this portion, diffusion and mixing and uniformization of pressure are promoted, and the mixed gas is uniformly ejected from the flame holes 24 to form a uniform flame. To form. The flame forming direction is controlled so that the flame is directed upward by the burner ring 26 provided so as to be located on the outer periphery of the flame, and stable combustion without lift is performed. Further, the heat receiving flange 27 is heated by the flame formed in the combustion portion 25 of the burner cylinder 23, and the heat recovery action from this flame keeps the temperature of the vaporization chamber 16 at a certain temperature or higher, and the heat to the heater 19 is maintained. It is possible to reduce part or all of the energization.

Then, in the vaporizing portion 11, the burner receiving seat 12, the nozzle portion 13 mounting portion, and the primary air intake opening 14 are provided.
Since the vaporization chamber 16 is integrally formed, the vaporization section 11
Can be designed in a compact shape, and the cost and the ignition time can be shortened while taking advantage of the power saving by heat recovery by transferring the heat of the burner portion from the burner receiving seat.

Further, a U-shaped heater 19 is arranged along the lower surface side of the burner receiving seat 12 on the opposite side of the vaporization chamber 16 so that the heater 19 portion is separated from the vaporization chamber 16. And the combustion heat of the combustion section 25 is the burner seat 1
Since it is transmitted to the vaporization chamber 16 via 2, the temperature on the inlet side (fuel supply port 18) side of the vaporization chamber 16 is lowered by the temperature gradient generated by the conduction heat path, and the temperature on the outlet side (nozzle part 13) side. Can be raised. That is, the vaporization chamber 16
By increasing the temperature on the outlet side of the gas, the tar accumulated in the vaporization element 17 can be suppressed, and the oil supply port 18 of the vaporization chamber 16 can be suppressed.
Refueling port 1 of vaporization chamber 16 by lowering the temperature in the vicinity
It is possible to prevent tar from being vaporized in the vicinity of 8 so as not to generate tar, which prevents the fuel from entering the vaporization chamber 16 and becomes tar.
The tar property can be totally improved.

Further, the nozzle portion 13 is positioned above the vaporizing chamber 16 so that the vaporized gas flows smoothly toward the nozzle portion 13 above the vaporizing chamber, and the vaporized gas is completely discharged. Since the vaporized high-temperature vaporized gas flows toward the nozzle portion, the vaporized gas hardly tars in the nozzle portion 13, and the tar performance of the nozzle portion 13 can be improved.

Further, the opening 14 for taking in the primary air is formed by hollowing out the rib portion 21 in which the temperature detecting means 20 for detecting the temperature extending from the burner receiving seat 12 to the nozzle portion 13 is provided. 21, the nozzle portion 13, the communication port 15, and the vaporization chamber 16 are arranged in a straight line, so that the temperature on the outlet side of the vaporization chamber 16 can be further increased by the conduction heat of the rib portion 21, and the temperature can be increased by the rib portion. The temperature can be controlled by the temperature detecting means 20 provided at 21, and the openings 14 for taking in the primary air are made uniform, so that the flow of air to the mixing tube 22 is made uniform and the stability of combustion can be maintained.

Further, since the vaporizing section 11 directly cools the vaporizing chamber 16 from the oil supply port 18 side of the vaporizing chamber 16 by the air flow from the convection blower 8, the temperature gradient of the vaporizing chamber 16 is caused by the cooling. The temperature on the inlet side can be lowered and the temperature on the outlet side can be increased, and the tar property can be improved as in the case described above.

In the above embodiment, the opening 14 for taking in the primary air is hollowed out except for the rib portion 21 provided with the temperature detecting means 20 extending from the burner receiving seat to the nozzle portion 13 and leaving the rib portion 21 and the nozzle portion 13. Although the communication device of the type in which the communication port 15 and the vaporization chamber 16 are aligned with each other has been described,
In this configuration, a plurality of ribs 21 may be provided, and the temperature detecting means 20 may be arranged in one of the ribs 21. Further, the air flow from the convection blower 8 may be used to fill the gas inlet of the vaporization chamber 16. 18
Although the configuration for cooling from above is described at the same time, this may be configured individually, and other configurations may be any configurations as long as the object of the present invention is achieved.

[0039]

As described above, in the combustion device of the present invention, the burner receiving seat, the nozzle portion mounting portion, the primary air intake opening and the vaporization chamber are integrally formed in the vaporization portion.
The vaporization part can be designed in a compact shape, enabling good combustion while achieving compactness, and while taking advantage of the power saving by heat recovery by transferring the heat of the burner part from the burner seat. Ignition time can be shortened. Furthermore, the temperature gradient generated by the path of the conduction heat can suppress the tar formation of the vaporization element and prevent the tar formation that becomes the resistance of the fuel entering the vaporization chamber, and thus the tar property can be totally improved.

Further, since the rib portion provided with the temperature detecting means, the nozzle portion, the communication port, and the vaporization chamber are arranged in a straight line, the conduction heat from the rib portion further causes the vaporization chamber to exit and the nozzle portion. The temperature can be raised, and the temperature can be controlled by the temperature detection means provided in the rib section, and the vaporized gas flows smoothly toward the nozzle section above the vaporization chamber, and the vaporized gas is completely vaporized. Since the above-mentioned high temperature vaporized gas flows toward the nozzle portion, the vaporized gas is hardly tarified in the nozzle portion, and the tar performance can be improved and the combustion stability can be maintained.

Further, in addition to the above structure, in the structure in which the air flow from the convection blower cools the oil supply port of the vaporization chamber, the oil supply port of the vaporization chamber is directly cooled by the convection blower. With the temperature gradient generated by cooling, the temperature on the inlet side of the vaporization chamber can be lowered and the temperature on the outlet side can be raised, and the tar property can be improved.

[Brief description of drawings]

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

FIG. 2 is a plan view of a burner seat of the combustion device.

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

FIG. 4 is a cross-sectional view of a warm air heater using a conventional combustion device.

FIG. 5 is a sectional view of another conventional combustion device.

[Explanation of symbols]

 8 Blower 11 Vaporizing Section 12 Burner Receiving Seat 13 Nozzle Section 14 Primary Air Intake Opening 15 Communication Port 16 Vaporizing Chamber 17 Vaporizing Element 18 Oil Filling Port 19 Heater 20 Temperature Detector 21 Rib 23 Burner Tube

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiro Ogino 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (6)

[Claims] 1. A vaporization section for vaporizing fuel, a heater for heating the vaporization section, a nozzle section for ejecting gas vaporized in the vaporization section, and a burner section for burning gas ejected from the nozzle section, The vaporizing unit is provided with a circular burner receiving seat for mounting and holding the burner unit, and the nozzle unit is arranged so as to be located substantially in the center of the burner receiving seat, and the burner unit is provided between the burner receiving seat and the nozzle unit. An opening is provided for supplying air to the nozzle, and a vaporization chamber for vaporizing cylindrical fuel whose tip portion is located in the vicinity of the burner receiving seat through a communication port communicating with the nozzle portion extends from the burner receiving seat in the outer peripheral direction. Is integrally formed and disposed, an oil supply port for supplying fuel is disposed at the end of the vaporization chamber on the opposite side of the nozzle portion, and the lower surface side of the burner receiving seat on the opposite side of the vaporization chamber is provided. So as to go along a half circle By disposing the shaped heater, a combustion apparatus constructed apart the heater portion from the vaporizing chamber. 2. The combustion apparatus according to claim 1, wherein the nozzle portion, the communication port, and the vaporization chamber are arranged in a straight line. 3. The combustion apparatus according to claim 1, wherein the primary air intake opening is formed by leaving one or a plurality of rib portions extending from the burner receiving seat to the nozzle portion mounting portion. 4. The combustion device according to claim 3, wherein temperature detecting means for detecting a temperature is arranged in the rib portion. 5. The combustion apparatus according to claim 3, wherein the rib portion is one, and the rib portion, the nozzle portion, the communication port, and the vaporization chamber are arranged in a straight line. 6. A vaporization section for vaporizing fuel, a heater for heating the vaporization section, a nozzle section for ejecting gas vaporized in the vaporization section, a burner section for burning the gas ejected from the nozzle section, and a burner section. A combustion tube that guides the combustion exhaust gas generated in the burner section upward, and a duct that covers the combustion tube and mixes the combustion exhaust gas and the indoor air flow from the blower to generate warm air, and the vaporization section includes the burner section. Is provided with a circular burner receiving seat for mounting and holding the nozzle, the nozzle portion is arranged so as to be located substantially in the center of the burner receiving seat, and an opening for supplying air to the burner portion is provided between the burner receiving seat and the nozzle portion. Is provided
A vaporization chamber for vaporizing cylindrical fuel, the tip portion of which is located in the vicinity of the burner receiving seat through a communication port communicating with the nozzle portion, extends in the outer peripheral direction and is integrally formed and disposed. And a fuel supply port for supplying fuel to the end of the vaporization chamber on the opposite side of the vaporization chamber, and cooling is performed from the fuel supply port side of the vaporization chamber by an air flow from a convection blower.