JPH04106304A - Petroleum combustion device - Google Patents

Abstract

PURPOSE:To provide a petroleum combustion device capable of shortening a preheating time, keeping a gasification capability and preventing a production of tar by a method wherein the petroleum combustion device is provided with a heater installed at a slant gasification part, an inlet of a gasification device opened in opposition to a lower part of the slant gasification part and an oil feeding nozzle directed toward an upper part of the slant gasification part. CONSTITUTION:Air supplied from a combustion fan 19 is supplied from an inlet port 11 of a gasification device and an oil feeding nozzle inlet port 13 to the gasification device 4. Gasified air strikes against a lower part of a slant gasification part 6, thereafter the air ascends along the slant gasification part 6. In turn, keroscene is injected from the oil feeding nozzle 14 to a gasification chamber 5, strikes against an upper part of the slant gasification part 6, dispersed there and flows down the slant gasification part 6. Keroscene is pushed wide by gasification air ascending along the slant gasification part 6, is spreaded over a surface of the slant gasification part, resulting in that a local reduction in temperature at the slant gasification part 6 is low. Since the heater 10 is stored in the slant gasification part 6, it is rapidly heated by the heater 10 and the local reduction in temperature of the slant gasification part 6 can be restricted. As a result, keroscene is not accumulated at the slant gasification part 6 but gasified, so that a production of tar can be prevented.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a vaporizing oil combustion device.

BACKGROUND OF THE INVENTION In recent years, there has been an increasing demand for shortening preheating time, maintaining vaporization ability, and preventing tar formation in vaporizing oil combustion equipment.

A conventional device of this type has a vaporizer cylinder 3 as shown in FIG.
1 had a built-in heater 32 at the bottom, a vaporization chamber 34 partitioned by a vaporization cylinder lid 33, and a heat receiving wall 35 in the form of a ring extending from the vaporization cylinder 31.

The carburetor inlet 36 opened tangentially on the circumferential surface of the vaporizer chamber 34, and faced an oil feed nozzle 37 that was in communication with an oil pump (not shown). Also, burner head 38
It consisted of a burner port plate 39, a burner port 7 foot 40, and a burner port cap 41, and was provided on the vaporizing tube 133. Further, the air chamber 42 contained the vaporizing cylinder 31 and communicated with the combustion fan 43, and the secondary air port 44 was opened at the upper part of the air chamber 42.

In the above configuration, the vaporization tube 31 is preheated and held at a high temperature by the energized heater 32, and the air sent from the combustion fan 43 flows into the vaporization chamber 34 from the vaporization tube inlet 36, and the vaporization air forms a swirling flow. The kerosene is divided into two systems: air and secondary air ejected from the secondary air port 44, and then the kerosene sent from the oil pump collides with the inner peripheral surface of the vaporization chamber 34 from the oil feed nozzle 37, and further, The vaporized air flows through the bottom of the vaporization tube 31 and is vaporized. Then, the generated vaporized gas mixes with the previous vaporized air to form a premixture, and the flame outlet plate 39
It is ejected from. This premixture starts to burn in the gap between the heat-receiving wall 35 and the burner head 38 due to the discharge of an ignition electrode (not shown), and the combustion is promoted by the secondary air. Then, the combustion heat received by the heat receiving wall 35 is transferred to the vaporization tube 31.
When the heat is transferred to the vaporizer cylinder 3, the heater 32 is turned on and off.
1 was maintained at the set temperature.

Problems to be Solved by the Invention In the configuration of such a conventional oil combustion device, the heater 32
was provided at the bottom of the vaporizer tube 31, so the vaporizer tube 31
There was a problem in that it took time to preheat the inner circumferential surface of the heater 32 with the heater 32. In addition, the vaporizer cylinder 3 where kerosene collided with
The inner circumferential surface of No. 1 loses its latent heat of vaporization to kerosene, resulting in a locally low temperature, which causes a problem in that its vaporizing ability decreases. Then, due to the swirling flow formed by the vaporized air, the kerosene gathers and stays at the center of the bottom of the vaporizing tube 31, so the heater 3
2 is provided at the bottom of the vaporizer cylinder 31,
In the same way as described above, the latent heat of vaporization is taken away by the kerosene at the center of the bottom surface of the vaporizing tube 31, and the temperature locally becomes low, which causes problems such as deterioration of vaporization ability, delay in vaporization, and generation of tar. It was.

The present invention solves the above problems, and aims to provide an oil combustion device that can shorten preheating time, maintain vaporization ability, and prevent tar formation.

Means for Solving the Problems In order to achieve the above objects, the present invention includes a bottomed box-shaped uniform chamber, a burner head provided on the upper part of the uniform chamber, and a burner head connected to the burner head and provided with the uniform chamber. a premixture port provided in the upper part of the premixture, a carburetor provided to cover the premixture inlet, and a vaporization chamber having an inclined vaporization part protruding above the burner head at the top of the carburetor. , a mixing passage communicating the vaporization chamber and the uniform chamber, a heater built in the inclined vaporization section, a vaporizer inlet opening facing the lower part of the inclined vaporization section, and an upper part of the inclined vaporization section. It is equipped with an oil feed nozzle directed toward the tank.

Effects According to the present invention, with the above-described configuration, the heater is built into the inclined vaporization section, so that the inclined vaporization section can be efficiently preheated and the preheating time can be completed in a short time. Additionally, the kerosene that collides with the top of the sloping evaporator, spreads, and attempts to flow down the slant evaporator will collide with the bottom of the slant evaporator and be pushed and spread by the vaporized air rising up the slant evaporator, causing it to stagnate locally. Since the gas is vaporized over the entire slope, tar formation can be prevented. In addition, since the vaporization occurs in the entire inclined vaporization group, the local temperature drop in the inclined vaporization section is small, and since it is heated by the heater, the local temperature drop in the inclined vaporization section can be suppressed and the vaporization ability can be maintained. It is.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 4.

As shown in the figure, a burner head 2 is provided at the top of a box-shaped uniform chamber 1, and a premixture inlet 3 is connected to the burner head 2 and is provided at the top of the uniform chamber 1. The carburetor 4 is provided so as to cover the premixture inlet 3, and the vaporization chamber 5 has a spinal vaporization chamber 5 which has a lower communication opening with an inclined vaporization section 6 projecting upwardly from the burner head 2 at the upper part of the vaporizer 4. A portion 8 is formed. The mixing passage 9 communicates the vaporization chamber 5 and the uniformity chamber 1. Further, the U-shaped heater 10 is built into the inclined vaporizing section 6, and the two straight parts of the heater 10 are arranged near the top of the inclined vaporizing section 6 and the bottom vaporizing section 8, respectively. The carburetor population 11 is located at the lower part of the inclined vaporization section 6 and faces near the U-shaped portion of the heater 10.
It is opened to 2. In addition, the oil supply nozzle 13 is located above the inclined vaporization section 6 and faces near the U-shaped portion of the heater 10!
[12 is opened, and the oil supply nozzle 14 is exposed.

Further, the heat receiving section 15 is formed of heat receiving fins that protrude above the burner head 2 from the outer wall of the inclined vaporizing section 6 .

The rectifier port 16 is opened in a rectifier plate 17 provided inside the mixing passage 9 so that the opening area increases as the distance from the communication lower increases. Premixture outlet 18
is opened at the lower side of the carburetor 4, and the combustion fan 19 is communicated with the air chamber 20. Further, a heat insulating material 21 is provided surrounding the uniform chamber 1 and the vaporizer 4.

Next, the preheating operation in this configuration will be explained.

When the heater 10 is energized, the vaporizer 4, especially the inclined vaporizer 6
The temperature rapidly rises to the set temperature, and then the heater 10 is turned on and off to maintain the temperature. In this case, since the heater 10 is built into the inclined vaporization section 6, the inclined vaporization section 6 can be efficiently preheated and the preheating time can be completed in a short time. That is, it is not necessary to preheat the entire vaporizer 4 to the set temperature, and preheating is completed when only the inclined vaporizer 6 reaches the set temperature.

Next, the combustion operation will be explained. Air supplied from the combustion fan 19 is divided into two systems: vaporized air supplied to the carburetor 4 from the carburetor port 11 and oil feed nozzle port 13, and secondary air supplied to the burner head 2. After the vaporized air collides with the lower part of the inclined vaporization section 6, most of the vaporized air rises along the inclined vaporization section 6. On the other hand, kerosene is ejected from the oil feed nosol 14 into the vaporization chamber 5, collides with the upper part of the inclined vaporization section 6, diffuses, and tries to flow down the inclined vaporization section 6. Then, this kerosene is spread by the vaporized air rising along the inclined vaporizing section 6, and is vaporized while spreading on the surface of the inclined vaporizing section 6 to become vaporized gas. That is, since the kerosene is diffused throughout the inclined vaporizing section 6, the local temperature drop in the inclined vaporizing section 6 is small, and since the heater 10 is built in the inclined vaporizing section 6, the heater 10 instantly It is possible to suppress a local temperature drop in the inclined vaporization section 6 due to heating, and as a result, there is an effect that the vaporization ability can be maintained. Further, since the kerosene is vaporized without being retained in the inclined vaporizing section 6, there is an effect that tar generation can be prevented. Then, the vaporized gas flows from the communication lower through the mixing passage 9 to the uniform chamber 1 while mixing with the vaporized air, and becomes a premixed gas. Furthermore, since the fuel is sufficiently homogenized in the uniform chamber 1 and ejected from the burner head 2 for combustion, the combustion characteristics are very good.

Next, a case where the amount of vaporized air decreases due to a decrease in the performance of the combustion fan 19 or clogging of the air chamber 20 with dust will be described. The kerosene that collides with the upper part of the inclined vaporizing section 6 and spread out has a weak effect of being pushed and spread by the vaporized air rising along the inclined vaporizing section 6.
It flows down the inclined vaporization section 6 and reaches the bottom vaporization section 8 . However, since the bottom vaporizing section 8 is heated by the linear section of the heater 10 and maintained at the set temperature, the kerosene is vaporized on the upper surface of the bottom vaporizing section 8 and no vaporization failure occurs.

Effects of the Invention As is clear from the above embodiments, the oil combustion apparatus of the present invention provides the following effects.

(1) Since the heater is built into the inclined vaporizer,
This has the effect that the inclined vaporization section can be efficiently preheated and the preheating time can be completed in a short time.

(2) The carburetor inlet is opened facing the lower part of the inclined vaporization section,
Since the oil feed nozzle is directed toward the upper part of the inclined vaporizing section, the kerosene is diffused throughout the inclined vaporizing section, so the local temperature drop in the inclined vaporizing section is small, and it is immediately heated by the heater to complete the inclined vaporizing section. This has the effect of suppressing local temperature drops and maintaining vaporization ability.

(3) Since kerosene is vaporized without remaining in the inclined vaporization section, there is an effect that tar formation can be prevented as a result.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an oil combustion device according to an embodiment of the present invention, FIG. 2 is a partially sectional side view showing the relationship between the vaporizer and the uniform chamber of the oil combustion device, and FIG. 3 is a side view of the same oil combustion device. FIG. 4 is an enlarged perspective view of the vaporizer of the oil combustion apparatus, and FIG. 5 is a sectional view of the conventional oil combustion apparatus. 1... Uniform chamber, 2... Burner head,
3... premixture inlet, 4... carburetor,
5... Vaporization chamber, 6... Inclined vaporization section, 9
...Mixing passage, 10... Heater, 11
... Carburetor inlet, 14 ... Oil feed nozzle. Name of agent: Patent attorney Akira Okaji and two others Figure 1 ・ Uniform list Figure 1

Claims (1)

[Claims] A uniform chamber in the shape of a box with a bottom, a burner head provided at the top of the uniform chamber, a premixture inlet connected to the burner head and provided at the top of the uniformity chamber, and a premixture inlet provided at the top of the uniformity chamber. a vaporizer disposed to cover the vaporizer, a vaporizer chamber having an inclined vaporizing section projecting above the burner head at the upper part of the vaporizer, a mixing passage communicating the vaporizer chamber with the uniform chamber, and the inclined vaporizer. An oil combustion device comprising: a heater built into a vaporizing section; a vaporizer inlet opening facing the lower part of the inclined vaporizing section; and an oil feeding nozzle directed toward the upper part of the inclined vaporizing section.