JPH0593507A - Kerosene burning equipment - Google Patents

Abstract

PURPOSE:To raise the capacity of vaporization by improving the shape of the inlet of vaporization air. CONSTITUTION:Diffusion grooves 22 are formed substantially in horizontal direction on an inclined vaporization section 20. An inlet 24 of the vaporization air is provided with a vaporizer lid 23 which is opposite to the inclined vaporization section 20 in the vicinity of an open ends of the internal upper face and internal side face of a vaporizer 19. A guide plate 25 is provided which projects substantially in horizontal direction into the inclined vaporization section 20 to form a flat plate shaped face. A kerosene sending nozzle 26 enters the upper section of the vaporization air inlet 26. With this arrangement, as the kerosene flows horizontally along the diffusion grooves 22 it is pressed down by the vaporization air that is descending in the inclined vaporization section 20 and it thereby flows from the diffusion grooves 22 into other diffusion grooves that are provided below them. Further, the kerosene is, on the contrary, exploded by the vaporization air that is ascending in the inclined vaporization section 20 and diffused widely on the surface of the inclined vaporization section 20 so that it can be vaporized instantly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vaporization type oil burning device.

[0002]

2. Description of the Related Art In a conventional petroleum combustion apparatus of this type, as shown in FIGS. 5 and 6, a burner head 2 is provided on the upper surface of a bottomed box-shaped mixing chamber 1, and the burner head 2 is brought into contact with the mixing. A vaporizer 3 is provided on the upstream side of the chamber 1. On the upper part of the carburetor 3, there is provided an inclined carburetor 5 which spreads toward the burner head 2 and has a U-shaped heater 4 built therein. The inclined carburetor 5 and the lower inner surface of the carburetor 3 are arranged horizontally. The diffusion groove 6 formed in the above is provided. The vaporizer lid 7 is provided with a vaporized air inlet 8 for supplying air to the vaporizer 3 so as to face the middle of the inclined vaporizer 5. Further, a guide plate 9 is formed so as to project in the horizontal direction from the middle of the inclined vaporizing section 5 to the vaporized air inlet 8 so as to receive the lower edge of the vaporized air inlet 8. further,
An oil feed nozzle inlet 10 is provided on the upper portion of the vaporizer lid 7 so as to face the upper portion of the inclined vaporization section 5, and the oil feed nozzle 11 faces the oil feed nozzle inlet 10. Further, the heat receiving fins 1 are provided on the inclined outer wall of the inclined vaporizing section 5 above the burner head 2.
Two are provided. Here, the air chamber 14 communicating with the combustion fan 13 is provided so as to include the carburetor 3 and the burner head 2, and the ignition electrode 1 is provided in the vicinity of the downstream of the burner head 2.
5 are provided. The vaporizer thermistor 16 is provided on the upper outer wall of the vaporizer 3.

Next, the preheating operation in the above configuration will be described. When the U-shaped heater 4 is first energized, the vaporizer 3 is preheated. When the output of the carburetor thermistor 16 reaches a set value by this preheating, the U-shaped heater 4 is turned on and off with this output as a boundary, and the temperature of the inclined vaporization section 5 is controlled to reach the vaporization temperature.

Next, the combustion operation will be described. The air sent from the combustion fan 13 is divided into two systems, that is, vaporized air flowing into the vaporizer 3 from the vaporized air inlet 8 and secondary air jetted from the burner head 2. In particular, when the vaporized air flows along the guide plate 9 and collides with the surface of the inclined vaporization section 5, it further rises along the surface of the inclined vaporization section 5,
Then, it descends toward the mixing chamber 1 along the surface of the inclined vaporizing section 5 in reverse. On the other hand, the kerosene ejected from the oil feeding nozzle 11 and colliding with the inclined vaporizing section 5 spreads on the surface of the inclined vaporizing section 5 in a band shape by the diffusion action of the diffusion groove 6, and is vaporized into vaporized air to be instantly vaporized. The vaporized gas generated here mixes with the vaporized air described above to form a premixed gas, which is ejected from the burner head 2 and ignited by the discharge of the ignition electrode 15 to start combustion, and further the combustion is promoted by the secondary air. To be done. Then, when the combustion heat received by the heat receiving fins 12 is thermally conducted to the carburetor 3, the output of the carburetor thermistor 16 approaches the set value, and at the same time, the U-shaped heater 4 turns on and off to cause the temperature of the inclined vaporization section 5 to change. Is controlled to the vaporization temperature.

[0005]

However, in the structure of the above-mentioned conventional petroleum combustion apparatus, when the amount of air is increased in response to the increase in the amount of combustion, the vaporized air that naturally rises along the surface of the inclined vaporization section 5 is obtained. Therefore, the kerosene that has flowed into the diffusion groove 6 is pushed up by the ascending vaporized air and cannot flow down from the diffusion groove 6 and flows horizontally along the diffusion groove 6. After that, the kerosene is pushed down on the surface of the inclined vaporizing section 5 by the vaporized air which conversely descends, and flows down from the vicinity of the end of the diffusion groove 6. Since the kerosene that has flowed down flows in the same direction as the vaporized air, it does not have a diffusing effect due to the vaporized air, and flows like a belt on the surface of the inclined vaporization section 5 and the inner surface of the lower portion of the vaporizer 3. As a result, since the surface of the inclined vaporizer 5 and the inner surface of the lower portion of the vaporizer 3 provided for vaporizing kerosene do not function sufficiently, the vaporization ability in the inclined vaporizer 5 and the lower portion of the vaporizer 3 is small, There was a problem that poor kerosene vaporization would occur.

Further, after the vaporized air rising on the surface of the inclined vaporizer 5 collides with the upper portion of the vaporizer 3, a part of the vaporized air moves along the inner upper surface and the inner side surface of the vaporizer 3 to the vaporizer lid 8. Flow in the direction. Therefore, the kerosene that collides with the upper part of the inclined vaporization part 5 and is scattered on the inner ceiling and the inner side surface of the vaporizer 3 is flown into this vaporized air and collides with the vaporizer lid 8. Then, since the temperature of the inner surface of the vaporizer lid 8 is lower than the vaporization temperature, vaporization failure occurs, or kerosene jumps out of the vaporizer 3 from the vaporized air inlet 9 or the oil feed nozzle inlet 10 to cause an odor or a fire. There was a problem of becoming.

On the other hand, when the vaporized air flows from the air chamber 14 to the vaporized air inlet 7, it collides with the outer surface of the vaporizer lid 8 in the vicinity of the oil feed nozzle inlet 10, so that the negative pressure region of the vaporizer lid 8 is in the negative pressure region. It occurs near the outer surface. There is a problem that vaporized gas generated inside the vaporizer 3 due to the suction action in the negative pressure region flows backward from the vaporized air inlet 7 or the oil feed nozzle inlet 10 to the outside of the vaporizer 3 and causes odor or fire. It was

The present invention has been made to solve the above-mentioned problems and has as its object the improvement of vaporization capacity and the prevention of backflow of kerosene or vaporized gas from a vaporizer.

[0009]

In order to achieve the above-mentioned object, the present invention provides an inclined vaporizing portion which is provided on the upper portion of the vaporizer and whose upper portion is widened to the burner head side, and which is provided on the inclined vaporizing portion so as to be substantially horizontal. The diffusion groove formed, the vaporized air inlet for supplying vaporized air provided on the vaporizer lid so as to face the inclined vaporizer near the open ends of the inner upper surface and the inner side surface of the vaporizer, and the vaporized air from the inclined vaporizer. The guide plate is provided so as to extend toward the lower edge of the inlet and project in a substantially horizontal direction, and an oil feed nozzle that faces the upper part of the vaporized air inlet and ejects fuel toward the inclined vaporization portion. ..

[0010]

According to the present invention, the vaporized air flowing in from the vaporized air inlet flows along the guide plate, rises along the surface of the inclined vaporizing portion and flows along the upper surface of the inside of the vaporizer, and the inclined vaporization is performed. And the flow descending along the surface of the section. For this reason, even if the amount of air is increased in response to an increase in the amount of combustion, the kerosene that has flowed into the diffusive groove will flow horizontally along the diffusive groove while falling along the surface of the inclined vaporizing section. It is pushed down by air and flows out from the diffusion groove. After that, the kerosene is inversely pushed and spread by the vaporized air rising in the inclined vaporization section, widely diffused on the surface of the inclined vaporization section, and instantaneously vaporized.

Further, the kerosene that collides with the inclined vaporizing portion and is scattered on the inner upper surface and the inner side surface of the vaporizing portion is pushed back by the vaporized air flowing along the inner upper surface and the inner side surface of the vaporizer, and is vaporized in the inclined vaporizing portion.

On the other hand, since the vaporized air flows into the vaporized air inlet without colliding with the outer surface of the vaporizer lid, a negative pressure region does not occur near the upstream of the vaporized air inlet. Therefore, the vaporized gas generated inside the vaporizer does not flow backward from the vaporized air inlet to the outside of the vaporizer.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 to 4, reference numeral 17 denotes a box-like mixing chamber having a bottom, a burner head 18 is provided on the upper surface, and a vaporizer 19 is provided on the upstream side of the mixing chamber 17 in contact with the burner head 18. .. The vaporizer 19 is at the top and the burner head 1 at the top.
The inclined vaporizing section 20 is formed so as to project to the side of the No. 8 side, and both linear portions of the U-shaped heater 21 are built in the upper and lower portions of the inclined vaporizing section 20. In addition, the inclined vaporization unit 2
A plurality of diffusion grooves 22 extending in a substantially horizontal direction are provided on the surface of 0 and the inner surface of the lower portion of the carburetor 19. Then, a carburetor lid 23 is erected on the side facing the inclined vaporization section 20,
The vaporizer lid 23 is provided with a vaporized air inlet 24 so as to face the inclined vaporization section 20 near the open ends of the inner upper surface and the inner side surface of the vaporizer 19. Also, this inclined vaporization unit 20
A guide plate 25 is provided in a substantially horizontal direction from the middle to the vaporized air inlet 24 so as to receive the lower edge of the vaporized air inlet 24. Moreover, the side surface is inclined downward. Further, at the upper part of the vaporized air inlet 24, the inclined vaporization unit 2
The oil feed nozzle 26 for spraying fuel is exposed to zero. Heat-receiving fins 27 located above the burner head 18 are provided on the inclined outer wall of the inclined vaporizing section 20. Further, behind the carburetor lid 23, a combustion fan 29 that encloses the carburetor 19 and the burner head 18 and communicates with an air chamber 28 that supplies air is provided. Reference numeral 30 is an ignition electrode provided near the downstream of the burner head 18, and 31 is a vaporizer thermistor provided on the upper outer wall of the vaporizer 19.

Next, the preheating operation in the above configuration will be described. The carburetor 1 is driven by the U-shaped heater 21 which is first energized.
9 is preheated. When the output of the carburetor thermistor 31 rises to a set value due to this preheating, the U-shaped heater 21 is turned on and off at the output, and the temperature of the inclined vaporization section 20 is controlled to reach the vaporization temperature.

Next, the supply of air and kerosene will be described. From the combustion fan 29 through the air chamber 28, the vaporized air is supplied from the vaporized air inlet 24 to the inclined vaporization section 20 and the secondary air to be supplied to the burner head 18 is divided into two systems. In particular, vaporized air is mainly divided into the following two streams. One is ascending vaporized air that flows along the upper surface of the guide plate 25 and collides with the middle of the inclined vaporization section 20 and then rises along the surface of the inclined vaporization section 20. The other flows along the inner upper surface and the inner side surface of the carburetor 19 and the inclined vaporizing section 2
The vaporized air that collides with the upper part of 0 and then descends along the surface of the inclined vaporizer 20.

Then, the kerosene which is ejected from the nozzle 26 and collides with the inclined vaporizing section 20 spreads a little inside the diffusion groove 22 when flowing into the diffusion groove 22. Due to the diffusing action of the diffusing groove 22, the kerosene flows downward while spreading in a strip shape on the surface of the inclined vaporizing section 20, and is vaporized into ascending vaporized air and descending vaporized air to be instantly vaporized. However, when the diffusion groove 22 is small, the diffusion action of the diffusion groove 22 becomes small and the kerosene flows in a narrow band shape, so that the contact area between the kerosene and the surface of the inclined vaporization section 22 becomes small and vaporization failure easily occurs. Become.

On the other hand, when the vaporized air is increased in response to the increase in the combustion amount, the diffusion groove 2 provided above the inclined vaporization section 20.
The kerosene flowing into No. 2 flows horizontally along the diffusion groove 22, is pushed down by the degassed air, and flows from the diffusion groove 22 into the diffusion groove 22 provided below. Further, the kerosene is spread by the upwardly vaporized air in the opposite direction and widely spreads on the surface of the inclined vaporizing section 20, so that the kerosene can be instantly vaporized. Further, in the middle part of the inclined vaporization section 20, the ascending vaporized air collides with the descending vaporized air to disturb the flow, so that the heat transfer coefficient is improved. As a result, the vaporization ability in the middle part of the inclined vaporization section 20 is improved.

Next, the initial stage of ignition will be described. The generated vaporized gas is mixed with vaporized air in the mixing chamber 17, is ignited by the ignition electrode 30 in the burner head 18, and burns together with the secondary air, so that the combustion characteristics are good. When the combustion heat received by the heat receiving fins 27 is thermally conducted to the carburetor 19, the output of the carburetor thermistor 31 approaches the set value, and at the same time, the U-shaped heater 21 is turned on and off to vaporize the temperature of the inclined vaporizer 20. The temperature is controlled so that it becomes the temperature. Further, since the combustion heat is recovered by the heat receiving fins 27, the U-shaped heater 21 is less frequently used, and the electricity bill can be reduced.

Also, the carburetor 19 collides with the inclined vaporizer 20.
The kerosene scattered on the inner upper surface and the inner side surface is pushed back by the vaporized air flowing along the inner upper surface and the inner side surface of the carburetor 19, and is reliably vaporized on the surface of the inclined vaporizing section 20.

On the other hand, the vaporized air flows into the vaporized air inlet 24 without colliding with the outer surface of the vaporizer lid 23, so that no negative pressure region is generated near the upstream of the vaporized air inlet 24. Therefore, the vaporized gas generated inside the vaporizer 19 does not flow backward from the vaporized air inlet 24 to the outside of the vaporizer 19.
Therefore, the backflow of kerosene and vaporized gas from the vaporizer can be prevented.

[0022]

As described above, according to the petroleum combustion apparatus of the present invention, the following effects can be obtained.

Since the vaporized air inlet is provided so as to face the inclined vaporizing section near the open ends of the inner upper surface and the inner side surface of the vaporizer, the vaporized air is divided into a rising flow and a descending flow in the inclined vaporizing section. To do. Therefore, even if the vaporized air is increased in response to the increase in the combustion amount, the kerosene flows horizontally along the diffusion groove and is pushed down by the vaporized air descending the inclined vaporization section to be provided below the diffusion groove. Flow into the diffusion groove. Further, the kerosene is spread by the vaporized air rising in the inclined vaporizing section and widely spreads on the surface of the inclined vaporizing section, so that the kerosene can be instantly vaporized.

Further, the kerosene that collides with the inclined vaporization section is scattered on the inner upper surface and the inner side surface of the carburetor, but is pushed back by the vaporized air flowing along the inner upper surface and the inner side surface of the carburetor,
It can be surely vaporized on the surface of the inclined vaporization section.

Furthermore, in the middle part of the inclined vaporizing part, the ascending vaporized air collides with the descending vaporized air and the flow is disturbed.
The heat transfer rate is improved, and the vaporization capacity in the middle part of the inclined vaporization section can be improved.

On the other hand, since the vaporized air flows into the vaporized air inlet without colliding with the outer surface of the vaporizer lid, a negative pressure region does not occur near the upstream of the vaporized air inlet. Therefore, since the vaporized gas generated inside the vaporizer does not flow back from the vaporized air inlet to the outside of the vaporizer, it is possible to prevent the reverse flow of kerosene or vaporized gas from the vaporizer.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional perspective view showing a main part of an oil combustion apparatus according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the device.

FIG. 3 is a side view of a cutout showing a main part of the device.

FIG. 4 is a partially cutaway external perspective view of the device.

FIG. 5 is a partial cross-sectional perspective view showing a main part of a conventional oil combustion device.

FIG. 6 is a vertical sectional view of the device.

[Explanation of symbols]

 18 Burner Head 19 Vaporizer 20 Inclined Vaporizer 22 Diffusion Groove 23 Vaporizer Lid 24 Vaporized Air Inlet 25 Guide Plate 26 Oil Feed Nozzle

Claims (1)

[Claims] 1. A vaporizer for vaporizing fuel, an inclined vaporization portion provided on an upper portion of the vaporizer and widened upward toward a burner head, and a diffusion groove formed in the inclined vaporization portion and formed in a substantially horizontal direction. A carburetor lid installed upright to face the inclined vaporization section side,
A vaporized air inlet for supplying vaporized air provided to the vaporizer lid so as to face the inclined vaporization portion near the open ends of the inner upper surface and the inner side surface of the vaporizer, and the vaporized air inlet from the inclined vaporization portion. An oil combustion apparatus comprising: a guide plate that extends toward a lower edge and projects in a substantially horizontal direction; and an oil feeding nozzle that faces the upper portion of the vaporized air inlet and ejects fuel toward the inclined vaporization portion.