JP2768040B2 - Oil burning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil burning apparatus provided with a vaporizer.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, a conventional oil combustion apparatus of this type is provided with a burner head 2 on the upper surface of a box-shaped mixing chamber 1 having a bottom. A vaporizer 3 is provided upstream of the chamber 1. U for vaporizer 3
The upper portion, which incorporates the upper and lower portions of both straight portions of the U-shaped heater 4, forms an inclined vaporizing portion 5 whose upper portion extends toward the burner head 2, and continues vertically from the inflection point 6 of the inclined vaporizing portion 5 to the sub-vaporizing portion. 7 are formed. A diffusion groove 8 is provided on the surface of the inclined vaporizing section 5 in the horizontal direction. The vaporizer lid 10
A guide plate for providing a vaporized air inlet 9 for supplying air to the vaporizer 3 so as to face the lower part of the inclined vaporizer 5 and for guiding air from the vaporized air inlet 9 to a lower surface of the inclined vaporizer 5. 11 is formed so as to protrude in a substantially horizontal direction from a lower portion of the inclined vaporizing section 5. Further, an oil feed nozzle inlet 12 is provided at the upper part of the vaporizer lid 10 so as to face the upper part of the inclined vaporizer 5.
3 is facing. Heat receiving fins 14 are provided on the outer wall of the inclined vaporizer 5 above the burner head 2. Here, an air chamber 16 communicating with the combustion fan 15 is provided so as to include the carburetor 3 and the burner head 2.
An ignition electrode 17 is provided in the vicinity of the downstream side of. The vaporizer thermistor 18 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. This preheat makes the thermistor vaporizer 1
When the output of 8 becomes a set value, the U-shaped heater 4 is turned on and off at the output, and the temperature of the inclined vaporizing section 5 is controlled to become the vaporizing temperature.

Next, the combustion operation will be described. Air sent from the combustion fan 15 is supplied to the vaporizer 3 through the vaporized air inlet 9.
Vaporized air flowing into the burner head 2
The air is divided into two systems and the next air. In particular, the vaporized air collides with the guide plate 11, flows along the guide plate 11, and then flows from the lower part to the upper part along the surface of the inclined vaporizer 5. On the other hand, the kerosene jetted from the oil supply nozzle 13 and colliding with the inclined vaporizing section 5 spreads on the surface of the inclined vaporizing section 5 by the diffusion groove 8 and is pushed and spread by the vaporized air rising on the surface of the inclined vaporizing section 5 for an instant. To vaporize. The vaporized gas generated here is mixed with the vaporized air to form a premixed gas, which is ejected from the burner head 2 and ignited by the discharge of the ignition electrode 17 to start combustion, and further promotes combustion by the secondary air. Is done. Then, when the combustion heat received by the heat receiving fins 14 is conducted to the vaporizer 3, the output of the vaporizer thermistor 18 approaches the set value, and at the same time, the U-shaped heater 4 is turned on and off, and the temperature of the inclined vaporizer 5 is increased. Is controlled to reach the vaporization temperature.

[0005]

However, in the configuration of the above-mentioned conventional oil combustion apparatus, the vaporized gas generated in the inclined vaporizing section 5 and the vaporized air pass through the sub-vaporizing section 7 while being mixed. Since the cross-section of the passage of the sub-vaporization section 7 in contact with 11 is narrow, there is a problem that the pressure loss is large.

Further, since one straight portion of the U-shaped heater 4 is built in the lower portion of the inclined vaporizing section 5, the lower outer wall of the inclined vaporizing section 5 projects toward the burner head 2. Therefore, the combustion gas generated by the burner head 2 collides with the lower outer wall of the inclined vaporizing section 5 and then flows away from the outer wall of the inclined vaporizing section 5. Therefore, the amount of heat received from the combustion gas on the outer wall of the inclined vaporizing section 5 is reduced, and when the inclined vaporizing section 5 is heated by the U-shaped heater 4, the upper portion thereof cannot utilize the external heating from the outer wall sufficiently. Therefore, immediately after the ignition, the upper portion of the inclined vaporizer 5 is deprived of the latent heat of vaporization by the kerosene until the combustion heat received by the heat receiving fins 14 is transferred to the inclined vaporizer 5. The temperature of the kerosene was remarkably lowered, and there was a problem that kerosene was delayed in vaporization.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a petroleum combustion apparatus in which the pressure loss of a carburetor is reduced and the temperature of an inclined carburetor immediately after ignition is suppressed.

[0008]

In order to achieve the above object, the present invention provides a petroleum combustion apparatus comprising an upper portion having an inclined vaporizer extending upward to a burner head, and a lower portion having a vertical wall communicating with the inclined vaporizer. A vaporizer provided with a sub-vaporizer having a heater built in the upper part of the inclined vaporizer, an oil feed nozzle for injecting fuel toward the inclined vaporizer, and a lower part of the inclined vaporizer facing the lower part. A vaporized air inlet for supplying vaporized air provided, and a guide plate protruding in a substantially horizontal direction so as to receive a lower edge of the inlet from a lower portion of the inclined vaporizing section to the vaporized air inlet, wherein: The vertical wall is disposed on the upstream side of the inclined vaporizing section and outside of the inclined vaporizing section from an inflection point provided on the inclined vaporizing section, and the passage of the sub-vaporizing section is expanded.

[0009]

According to the present invention, the fuel gas generated in the inclined vaporizing section and the vaporized air pass through the sub-vaporizing section while being mixed, but the vertical wall of the sub-vaporizing section is located upstream of the guide plate. The passage cross section of the sub-evaporation part, especially in contact with the guide plate, is compared with the conventional case, because the sub-evaporation part is located outside the inflection point provided on the inclined vaporization part and is formed by expanding the sub-evaporation part. Since it is wide, the pressure loss is small.

Further, since the combustion gas flows along the outer wall of the inclined vaporizing section, the amount of heat received on the outer wall of the inclined vaporizing section is large, and the heater built in the upper portion of the inclined vaporizing section heats. The upper part is deprived of the latent heat of vaporization by kerosene,
The temperature drop in the upper part of the inclined vaporizing part immediately after ignition can be suppressed.

[0011]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1 to FIG. 4, reference numeral 21 denotes a mixing chamber in the shape of a box with a bottom. A burner head 22 is provided on the upper surface, and a vaporizer 23 is provided in contact with the burner head 22 and upstream of the mixing chamber 21. . The vaporizer 23 has an upper part and the upper part has a burner head 2.
An inclined vaporizer 25 is formed to protrude to the two sides. Further, both straight portions of the U-shaped heater 24 are incorporated near the upper portion of the inclined vaporizing portion 25. A plurality of diffusion grooves 28 extending in the horizontal direction are provided on the surface of the inclined vaporizing section 25. A vaporizer lid 30 is provided on the side of the inclined vaporizer 25 facing the diffusion groove 28, and the vaporizer lid 30 is provided on the vaporizer lid 30.
Is provided with a vaporized air inlet 29 opposed to. A guide plate 31 is formed so as to protrude substantially horizontally from the inclined vaporizing section 25 to the vaporized air inlet 29 so as to receive the lower edge of the inlet 29. Reference numeral 26 denotes an inflection point provided in the inclined vaporizer 25 on the upstream side of the guide plate 31. Below this inflection point 26, a vertical wall 27a formed by extending a distance H outward (on the burner head 22 side) of the inclined vaporizer 25 from the inflection point 26.
And a lower portion of the vaporizer 23 is formed.

A heat receiving fin 24 is provided above the burner head 22 on the outer slope wall of the inclined vaporizer 25. Further, an oil feed nozzle inlet 32 is provided in the vaporizer lid 30 above the vaporized air inlet 29, and faces an oil feed nozzle 33 that injects fuel to the inclined vaporizer 25. Behind the carburetor lid 30, there is provided a combustion fan 35 containing the carburetor 23 and the burner head 22 and communicating with an air chamber 36 for supplying air. Reference numeral 37 denotes an ignition electrode provided near the downstream of the burner head 22, and reference numeral 38 denotes a vaporizer thermistor provided on an upper outer wall of the vaporizer 23.

Next, the preheating operation in the above configuration will be described. When the U-shaped heater 24 is first energized, the vaporizer 23
Is preheated. This preheat makes the vaporizer thermistor 3
8 rises to the set value, U
The heater 24 is turned on and off so that the temperature of the inclined vaporizing section 25 is controlled to the vaporizing temperature.

Next, the combustion operation will be described. The air supplied from the combustion fan 35 to the air chamber 36 is supplied to the vaporized air inlet 2.
9 and the oil supply nozzle inlet 32, the air is supplied to the inclined vaporizer 25 and the secondary air is supplied to the burner head 22 in two systems. In particular, the vaporized air supplied from the vaporized air inlet 29 collides with the guide plate 31, flows along the guide plate 31, and then flows from the lower part of the inclined vaporizer 25 to the upper part.

The kerosene jetted from the oil supply nozzle 33 collides with the upper portion of the inclined vaporizing section 25, flows down the surface of the inclined vaporizing section 25, enters the diffusion groove 28, and thereafter, the kerosene flows along the diffusion groove 28. Then, it flows down in the horizontal direction, further flows down, is spread by the vaporized air, diffuses widely on the surface of the inclined vaporizing section 25, and is instantaneously vaporized.

The vaporized gas generated in the inclined vaporizing section 25 and the vaporized air pass through the sub-vaporizing section 27 while being mixed, but the sub-vaporizing section 27 is moved upstream of the guide plate 31 to the inclined vaporizing section 2.
5 is formed on the outer side of the inclined vaporizing section 25 from the inflection point 26, so that the passage cross section of the sub-vaporizing section 27 in contact with the guide plate 31 is particularly wider than that of the conventional example. ,
Pressure loss is reduced. As a result, a sufficient amount of vaporized gas can be supplied to the burner head 22, so that good combustion characteristics can be obtained together with the secondary air.

Further, since both straight portions of the U-shaped heater 24 are built in near the upper side of the inclined vaporizing portion 25, the lower outer wall of the inclined vaporizing portion 25 is closer to the burner head 22 than the conventional example. It can be formed so that it hardly projects. Therefore, the generated combustion gas can flow along the outer wall of the inclined vaporizer 25. Therefore, the amount of heat received on the outer wall of the inclined vaporizing section 25 is increased, and the upper portion of the inclined vaporizing section 25 can be intensively heated by both straight portions of the U-shaped heater 24.
Even if the upper portion of the inclined vaporizer 25 loses the latent heat of vaporization by kerosene immediately after ignition, the temperature of the upper portion of the inclined vaporizer 25 hardly decreases. After that, as the combustion heat received by the heat receiving fins 34 is conducted to the inclined vaporizer 25, the output of the vaporizer thermistor 38 approaches the set value, and at the same time, the U-shaped heater 24 turns on and off, thereby causing the inclined vaporization. The temperature of the unit 25 is controlled so as to be the vaporization temperature. Further, since the combustion heat is recovered by the heat receiving fins 35, the U-shaped heater 2
4 is less frequently used, and the cost of electricity can be reduced.

The effect does not change even if the sub-vaporizing section 27 is inclined in the same manner as the inclined vaporizing section 22.

[0020]

As described above, according to the petroleum combustion apparatus of the present invention, the following effects can be obtained. (1) Since the sub-vaporization section is formed to extend from the inflection point provided in the inclined vaporization section on the upstream side of the guide plate to the outside of the inclined vaporization section, the sub-vaporization section particularly comes into contact with the guide plate as compared with the related art. The passage cross section of the portion is widened, the pressure loss is reduced, and the combustion characteristics are improved. (2) Since the heater is built in the upper part of the inclined vaporizing section, the projection of the lower outer wall of the inclined vaporizing section as in the related art can be reduced, and the combustion gas of the burner head can flow along the outer wall of the inclined vaporizing section. it can. Therefore, the amount of heat received by the outer wall of the inclined vaporizing section increases, and the upper portion of the inclined vaporizing section can be intensively heated by the heater. Can be.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view of the oil-fired apparatus.

FIG. 3 is a cutaway side view showing a main part of the oil combustion device.

FIG. 4 is a perspective view of an appearance of the oil-fired device, partially cut away.

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

FIG. 6 is a longitudinal sectional view of the oil combustion device.

[Explanation of symbols]

 Reference Signs List 22 burner head 23 vaporizer 24 U-shaped heater (heater) 25 inclined vaporizer 26 inflection point 27 auxiliary vaporizer 27a vertical wall 29 vaporized air inlet 31 guide plate 33 oil feed nozzle

Claims (1)

(57) [Claims] 1. A vaporizer having an upper portion provided with an inclined vaporizer extending upward toward the burner head, a lower portion provided with a sub-vaporizer communicating with the inclined vaporizer and having a vertical wall, and an upper portion of the inclined vaporizer. A built-in heater, an oil feed nozzle for injecting fuel toward the inclined vaporizing section, a vaporized air inlet for supplying vaporized air provided opposed to a lower portion of the inclined vaporizing section, and a lower section of the inclined vaporizing section. A guide plate protruding in a substantially horizontal direction so as to receive a lower edge of the inlet to the vaporized air inlet, and an inflection point provided in the inclined vaporizer on an upstream side of the guide plate to the inclined vaporizer. An oil-fired device in which the vertical wall is disposed on an outer side to expand a passage of the sub-vaporization unit.