JP3134460B2 - 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 a gas-fired oil combustion apparatus.

[0002]

2. Description of the Related Art As shown in FIGS. 6 and 7, a conventional oil combustion apparatus of this type is provided with a burner head 2 on the upper surface of a mixing chamber 1 having a box shape with a bottom. A vaporizer 3 is provided upstream of the chamber 1. The vaporizer 3 is provided with an inclined vaporizing surface 5 having an upper portion inclined toward the burner head 2 and having a U-shaped heater 4 built therein. The vaporizer lid 6 is provided with a vaporized air inlet 7 for supplying air to the vaporizer 3 with an inclined vaporizing surface 5.
Are provided so as to face each other in the middle. In addition, the vaporizer lid 6
The nozzle inlet 8 is provided above the vaporized air inlet 7, and the oil feed nozzle 9 faces the nozzle inlet 8. In the middle of the inclined vaporizing surface 5, a guide plate 10 is provided protruding in the horizontal direction near the lower edge of the vaporized air inlet 7. In addition, burner head 2
The heat receiving fins 11 are provided on the inclined outer wall of the inclined vaporizing surface 5 above. Here, an air chamber 13 communicating with the combustion fan 12 is provided so as to include the carburetor 3 and the burner head 2, and an ignition electrode 14 is provided near the downstream of the burner head 2. Further, the vaporizer thermistor 15 is provided on the upper outer wall of the vaporizer 3.

Next, the preheating operation in the above configuration will be described. The vaporizer 3 is preheated by the U-shaped heater 4 that is first energized. When the output of the vaporizer thermistor 15 reaches a set value due to this preheating, U
The power of the heater 4 is turned on and off so that the temperature of the inclined vaporizing surface 5 is controlled to the vaporizing temperature.

Next, the combustion operation will be described. The air sent from the combustion fan 12 is supplied in two separate systems: vaporized air flowing into the vaporizer 3 from the vaporized air inlet 7 and secondary air ejected from the burner head 2. In particular, the vaporized air flows along the upper surface of the guide plate 10 and then rises along the surface of the inclined vaporizing surface 5. On the other hand, the kerosene jetted from the oil supply nozzle 9 collides with one upper side of the inclined vaporizing surface 5 to take heat from the inclined vaporizing surface 5 and 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 14 to start combustion, and further promotes combustion by the secondary air. Is done. Then, when the combustion heat received by the heat receiving fins 11 is conducted to the vaporizer 3, the output of the vaporizer thermistor 15 approaches the set value, and at the same time, the power of the U-shaped heater 4 turns on and off, and the inclined vaporizing surface 5 Is controlled to be the vaporization temperature.

[0005]

However, in the configuration of the above-described conventional oil combustion apparatus, the inclined vaporizing surface 5 keeps the vaporizing temperature lower until the combustion heat received by the heat receiving fins 11 is conducted to the vaporizer 3. Therefore, the heat which kerosene can take from the inclined vaporizing surface 5 also decreases. As a result, all the kerosene cannot be vaporized, and the remaining kerosene flows while vaporizing on the surface of the inclined vaporized surface 5 in a belt-like vaporization pattern (9A) due to the surface tension of the kerosene itself. Therefore, kerosene has a problem that the vaporizing function of the inclined vaporizing surface 5 cannot be fully utilized, and poor vaporization is likely to occur.

Immediately after the kerosene collides with the inclined vaporizing surface 5, although the kerosene is pushed up by the vaporized air rising along the surface of the inclined vaporizing surface 5, the kerosene is kept under the inclined vaporizing surface 5 by its own weight. Since it flows down, the upper part of the inclined vaporizing surface 5 cannot be used as a vaporizing function. Therefore,
There is a problem that the vaporizing ability of the vaporizer 3 is small.

[0007] The present invention has been made to solve the above problems, and has as its object to improve the vaporization ability.

[0008]

In order to achieve the above object, the present invention provides an oil-fired apparatus provided at an upper portion of a carburetor and having an inclined vaporized surface inclined upward to a burner head side, and an upper portion of the inclined vaporized surface. and a non-grooved surface provided with Mase concave, and the formed diffusion surface so as to connect this non groove surface and the inclined vaporizing surface smoothly, the diffusion grooves to face the one end diffusion surface is provided on the inclined vaporizing surface A vaporized air inlet provided so as to face the inclined vaporized surface near the grooveless surface, and an oil feed nozzle for jetting fuel toward the grooveless surface.

In addition, a non-grooved surface is inclined by vaporization with a diffusion surface adjacent thereto.
It is inclined toward the surface side .

[0010]

According to the present invention, the kerosene jetted from the oil supply nozzle collides with the non-groove surface to take heat from the non-groove surface, most of the kerosene is vaporized, and the remaining kerosene is non-groove surface Flow to cover. Thereafter, the kerosene mainly flows into the diffusion groove while spreading on the diffusion surface. The kerosene that has flowed into the diffusion groove flows horizontally along the diffusion groove, further flows down, and
The surface of the inclined vaporized surface is pushed up by the ascending vaporized air, and diffuses to the surface of the inclined vaporized surface to be surely vaporized. On the other hand, the flow direction of the kerosene flowing from the diffusion surface to the inclined vaporization surface changes, so that the flow of the kerosene is disturbed and the heat transfer coefficient is improved. As a result, the vaporization ability from the diffusion surface to the inclined vaporization surface is locally improved.

Also, since the non-grooved surface is inclined toward the inclined vaporizing surface, the kerosene jetted from the oil feed nozzle and colliding with the non-grooved surface spreads along the inclination direction of the non-grooved surface, and the inclined vaporized surface. Flows strongly toward the upper part of the other. Therefore, the kerosene is widely diffused and vaporized also on the upper surface of the inclined vaporized surface.

[0012]

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

1 to 4, reference numeral 16 denotes a box-shaped mixing chamber having a bottom. A burner head 17 is provided on the upper surface, and a vaporizer 18 is provided in contact with the burner head 17 and upstream of the mixing chamber 16. . The carburetor 18 has an upper part and the upper part has a burner head 1.
An inclined vaporizing surface 19 formed to be inclined is provided on the side of 7, and both straight portions of a U-shaped heater 20 are built in upper and lower portions of the inclined vaporizing surface 19. This inclined vaporizing surface 19
Is provided with a non-grooved surface 21 which is recessed on one side of the upper surface and which is inclined in the same manner as the inclined vaporizing surface 19. A diffusion surface 22 is formed so as to smoothly connect the non-groove surface 21 and the inclined vaporizing surface 19, and one end of a substantially horizontally extending diffusion groove 23 provided on the inclined vaporizing surface 19 is formed on the diffusion surface 22. Is facing. A vaporizer lid 24 is provided on the side facing the inclined vaporizing surface 19, and a vaporized air inlet 25 is provided on the vaporizer lid 24 so as to face the inclined vaporizing surface 19 near the non-grooved surface 21. ing. Further, a guide plate 26 is provided substantially in the horizontal direction from the middle of the inclined vaporizing surface 19 to the vicinity of the lower edge of the vaporized air inlet 25. Further, an oil feed nozzle 27 for ejecting fuel to the non-grooved surface 21 faces the upper part of the vaporized air inlet 25. Heat receiving fins 28 located above the burner head 17 are provided on the inclined outer wall of the inclined vaporizing surface 19. Further, behind the vaporizer lid 24, a combustion fan 30 including the vaporizer 18 and the burner head 17 and communicating with an air chamber 29 supplied with air is provided. Reference numeral 31 denotes an ignition electrode provided near the downstream of the burner head 17;
Reference numeral 2 denotes a vaporizer thermistor provided on the upper outer wall of the vaporizer 18.

Next, the preheating operation in the above configuration will be described. The carburetor 1 is turned on by the U-shaped heater 20 that is first energized.
8 is preheated. When the output of the vaporizer thermistor 32 rises to a set value due to this preheating, the power of the U-shaped heater 20 is turned on and off at the output, and the inclined vaporizing surface 19 is turned off.
Is controlled to be the vaporization temperature.

Next, supply of air and kerosene will be described. The air is supplied from the combustion fan 30 via the air chamber 29 into the two systems of vaporized air supplied from the vaporized air inlet 25 to the inclined vaporizing surface 19 and secondary air supplied to the burner head 17. In particular, the vaporized air flows along the upper surface of the guide plate 26 and strikes the middle of the inclined vaporizing surface 19, and then rises along the surface of the inclined vaporizing surface 19. On the other hand, the kerosene jetted from the oil supply nozzle 27 collides with the non-grooved surface 21 to take heat from the non-grooved surface 21 and vaporize.

Next, the combustion operation will be described. The generated vaporized gas is mixed with the vaporized air in the mixing chamber 16, ignited by the discharge of the ignition electrode 31 in the burner head 17, and burns together with the secondary air, so that the combustion characteristics are good. Heat receiving fins 28
When the combustion heat received at step (1) is conducted to the vaporizer 18, the output of the vaporizer thermistor 32 approaches the set value, and
The power of the character-shaped heater 20 is turned on and off, and the temperature of the inclined vaporizing surface 19 is controlled to be the vaporizing temperature. Since the heat of combustion is recovered by the heat receiving fins 28, the frequency of use of the U-shaped heater 20 is reduced, and the cost of electricity can be reduced.

A period until the combustion heat received by the heat receiving fins 28 is conducted to the vaporizer 18 will be described. During this period, the temperature of the inclined vaporized surface 19 becomes lower than the vaporization temperature, so that the temperature difference between the kerosene and the non-grooved surface 21 becomes smaller. As much as the heat that kerosene can take from the non-grooved surface 21 is reduced,
All of the kerosene cannot be vaporized, and the remaining kerosene spreads to cover the non-grooved surface 21. After that, most of the kerosene flows into the diffusion groove 23 while spreading on the diffusion surface 22. The kerosene flowing into the diffusion groove 23 flows in the horizontal direction along the diffusion groove 23, further flows down, and is pushed up by the vaporized air rising on the surface of the inclined vaporizing surface 19. As a result, the kerosene diffuses on the surface of the inclined vaporizing surface 19 like a vaporization pattern (27A), so that it can be surely vaporized.

On the other hand, the flow direction of other kerosene is changed when flowing into the inclined vaporizing surface 19 from the diffusion groove 23, so that the flow of the kerosene is disturbed and the heat transfer coefficient is improved. As a result, the vaporization ability from the diffusion surface 22 to the inclined vaporization surface 19 is locally improved.

Next, another embodiment of the non-grooved surface 21 will be described. As shown in FIG. 5, the point different from the above embodiment is that the non-grooved surface 33 is provided on one upper side of the inclined vaporizing surface 34 and further inclined toward the other upper side of the inclined vaporizing surface 34. The other members are the same as in the above embodiment. The effect of the non-grooved surface 33 will be described. The kerosene jetted from the oil feed nozzle 27 and colliding with the non-grooved surface 33 spreads in a substantially horizontal direction mainly along the inclined direction of the non-grooved surface 33 and flows out toward the other upper portion of the inclined vaporized surface 34. Therefore, a large amount of kerosene flows in the horizontal direction along the diffusion groove 23 and the inclined vaporization surface 34
Since the gas is diffused and vaporized widely also on the upper surface of the surface, the vaporizing function of the inclined vaporizing surface 34 can be fully utilized.

[0020]

As described above, according to the petroleum combustion apparatus of the present invention, the following effects can be obtained. (1) provided Mase concave on the top of the inclined vaporizing surface free groove surface, since to face the one end a diffusing groove on the diffusion surface for connecting the free groove surface and the inclined vaporizing surface, kerosene on the surface of the inclined vaporizing surface Can diffuse and vaporize reliably. Furthermore, since the flow direction of the kerosene changes when flowing from the diffusion surface to the inclined vaporizing surface, the vaporization ability from the diffusion surface to the inclined vaporizing surface is locally improved. (2) Since the non-grooved surface is inclined toward the inclined vaporizing surface adjacent to the diffusion surface, kerosene flows toward the other upper portion of the inclined vaporizing surface. Therefore, the gas is widely diffused and vaporized also on the upper surface of the inclined vaporizing surface, so that the vaporizing function of the inclined vaporizing surface can be fully utilized.

[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 device.

FIG. 3 is an enlarged perspective view of a non-grooved surface of the device.

FIG. 4 is an external perspective view of the device with a partially cut-away view.

FIG. 5 is an enlarged perspective view of a non-grooved surface of the device.

FIG. 6 is a partial cross-sectional perspective view showing a main part of a conventional oil combustion device.

FIG. 7 is a longitudinal sectional view of the same device.

[Explanation of symbols]

 17 Burner head 18 Vaporizer 19, 34 Inclined vaporizing surface 21, 33 Non-groove surface 22 Diffusion surface 23 Diffusion groove 25 Vaporized air inlet 27 Oil feed nozzle

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F23D 11/10 F23D 11/40-11/44

Claims (2)

(57) [Claims] And 1. A vaporizer for vaporizing the fuel, and inclined vaporizing surface inclined upwards to the burner head side is provided in the upper portion of the vaporizer, no groove surfaces provided by recessing the upper portion of the inclined vaporizing surface When,
This non-grooved surface and the inclined vaporized surface are gently connected.
Vaporizing supplies a diffusing surface were urchin formed, diffusion groove one end disposed on the inclined vaporizing surface was facing the diffusing surface, the vaporized air provided so as to face the inclined vaporizing surface in the vicinity of the free groove surface An oil burning device comprising an air inlet and an oil feed nozzle for ejecting fuel toward the grooveless surface. 2. The petroleum combustion apparatus according to claim 1, wherein the non-grooved surface is inclined toward the inclined vaporizing surface adjacent to the diffusion surface.