JPH0160725B2 - - Google Patents

Description

Detailed Description of the Invention The present invention softens the viscosity of kerosene and other liquid fuels that are splashed and collided toward the combustion tube with the heating action of a heater, and then scatters the fuel into fine particles to the surroundings. By promoting ignition of combustion, even in cold regions,
Alternatively, the present invention relates to a vaporizing burner that quickly evaporates from an initial red-fired raw combustion state to vaporize and burn even in winter.

Conventionally, as described in Japanese Patent Application Laid-open No. 55-38468, a combustion tube with a closed tip is placed in a combustion cylinder with an open tip.
A vaporizer is rotatably disposed with the end on the proximal open side as a fuel scattering end, and a gas chamber communicating with the inside of the vaporizer is provided between the combustion tube and the proximal open side of the vaporizer. In the case of a vaporizing burner, it is important to quickly ignite the fuel splashed from the fuel scattering end toward the combustion tube and burn it red flame, which promotes the heating effect of the vaporized body and causes the inside of the vaporized body to be heated. This is extremely important in ensuring that the supplied fuel evaporates and evaporates well and performs stable evaporative combustion in a short period of time.

For this reason, previously, Japanese Patent Application Laid-Open No. 53-30040
As described in the publication, a device has been developed that generates vaporized gas by directly heating the fuel scattered from the start of vaporization combustion with a heater, etc., but according to this vaporization burner, the vaporized gas generated is It is difficult to cause instantaneous complete combustion at startup, and a portion of the vaporized gas is inevitably discharged from the gas chamber in an unburned state at regular intervals, causing the disadvantage of dissipating the odor of raw gas. Instead of using such a vaporizing burner, the fuel is first completely combusted using a red flame, then the vaporizing tube is heated by the raw combustion flame to evaporate the sent fuel, and the vaporized gas generated is mixed with forced air. However, while creating a complete mixture of gases, it was allowed to transition to vaporization combustion.

However, even with vaporizing burners that can transition from live combustion to vaporizing combustion, when operating the burner in particularly cold regions or during the winter, the viscosity of the scattered fuel becomes stronger due to the low temperature, causing the inner surface of the combustion cylinder to This reduces the scattering effect to the surroundings, making it difficult to start the ignition of raw combustion, and making it difficult to transition to vaporization combustion.

In view of the above, even when kerosene or other liquid fuel is evaporated from a raw combustion state to be evaporated and burned, a part of the fuel splashed from the fuel splashing end is distributed around the entire circumference of the fuel splashing wall of the combustion tube. A heater is installed to heat the fuel to soften the viscosity of the fuel to the extent that it is not evaporated but is scattered into finer particles by collision with the fuel scattering wall. The present invention aims to provide a device for accelerating the ignition of live combustion in a vaporizing burner, which promotes the ignition of live combustion quickly and accurately even in winter, and is capable of performing good vaporizing combustion. A preferred embodiment of the configuration shown in the accompanying drawings will be described.

In Fig. 1, reference numeral 1 denotes a combustion tube whose tip is open and whose bottom side is closed. A combustion disk 3 having holes 4 drilled therein is laid horizontally, and a gas chamber 5 of an appropriate capacity is arranged between the combustion tube 1 and the combustion disk 3.

Reference numeral 6 denotes a cylindrical vaporized body with a closed tip and an open base end, and the vaporized body 6 is passed from the ventilation chamber 2 side to the combustion tube 1.
It is fixed to the tip of the rotating shaft 7 inserted through the inner central part so as to cover the rotating shaft 7. and vaporized body 6
The base end open side has an end portion as a fuel splashing end 10,
In addition, the gas stirring tube 8, which has a gas jetting inner wall 9 inclined toward the open side of the tip of the combustion tube 1 on the outer circumferential side, is mounted integrally with a fuel scattering gap 11 between the gas jetting inner wall 9 and the combustion disk 3. An annular gas ejection passage 13 is formed between the gas ejection outer wall 12 and the gas ejection outer wall 12 provided at the center so as to be inclined inward.

14 is a blower tube with both ends open, which is inserted deep into the vaporizer 6 from the bottom side of the combustion tube 1;
A mixed gas passage 15 is formed between the inner circumferential surface of the vaporizer 6 and the outer circumferential surface of the blower tube 14, and the tip thereof is connected to the blower tube 14 and the base end thereof is connected to the gas chamber 5.

Reference numeral 16 denotes a hollow inverted conical ventilation regulating body mounted inside the top of the tip of the vaporizer 6 via the rotating shaft 7;
A fuel outflow passage 17 is provided at the top of the ventilation regulating body 16. Reference numeral 18 denotes a fuel oil diffuser mounted on the rotary shaft 7 so as to be located at the center of the ventilation adjustment body 16, and the tip of the oil supply pipe 19 is visible from the surface of this fuel diffuser.

20 is a ventilation chamber 2 located outside the combustion tube 1;
A ventilation passage 21 is provided between the combustion tube 1 and the outer tube 20, the proximal end of which is connected to the ventilation chamber 2, and the distal end of which is open. 22
2 is a heater for heating the fuel scattering wall 1a of the combustion tube 1 against which the fuel splashed from the fuel scattering end 10 collides, and the heater 22 is housed in an enclosed shape by bending the fuel scattering wall 1a. . Therefore, the heating effect of the heater 22 increases the fuel scattering wall 1a by approximately 100 mm.
It is heated to 150°C to 150°C so that the viscosity of the fuel is softened to such an extent that a part of the fuel splashed and collided with the fuel scattering wall 1a is not evaporated and vaporized but is further scattered in the form of fine particles to the surroundings. 23 is a raw combustion spark plug, the tip of which is exposed to the fuel splashing wall 1a.

The vaporizing burner shown in FIG. 3 is an example other than that shown in FIG. 1, and in this vaporizing burner, the entire proximal open end wall of the vaporizing body 6' is directed toward the open end side of the combustion tube 1'. The gas agitation cylinder 8 is eliminated by making the gas ejection inner wall 9' curved, thereby simplifying the structure of the vaporizing burner. Edge 1
0'. When the above-mentioned vaporizer 6' is adopted, the combustion plate 3 is not installed inside the combustion tube 1', and the wall surface of the combustion tube 1' facing the gas injection inner wall 9' is placed on the gas injection inner wall 9'. The mixture gas passage 1 is formed so as to be close to each other, with one wall surface of the combustion tube 1' facing the gas jetting inner wall 9' serving as a gas jetting outer wall 12'.
Form 5. Therefore, the gas chamber 5' is formed into an annular shape by the combustion tube 1', the open side of the vaporizer 6', and the blower tube 14 to carry out vaporization combustion.
Further, in the vaporizing burner of this embodiment, the ventilation regulator 16 does not need to be employed.

Next, the operation of the present invention will be explained.

In Figure 1, when starting the burner,
The heater 22 is energized, and the fuel scattering wall 1a is heated to a temperature such that the viscosity of the scattered fuel becomes soft, for example, 100° C.
The vaporized body 6 is heated to 150° C. and then rotated at high speed by the rotating shaft 7, forced air is distributed from the ventilation chamber 2 to the inside of the vaporized body 6 and the ventilation passage 21, and liquid fuel is supplied from the fuel supply pipe 19. Once started, the fuel flows from the tip of the fuel supply pipe 19 to the fuel diffuser 1.
After being supplied to the surface of the gaseous material 8, the gas is diffused and transferred to the inner surface of the top of the vaporized material 6. The fuel, which has been diffused into fine particles and formed into a thin film, sequentially passes through the mixed gas passage 15, passes through the fuel scattering gap 11 provided on the open side of the base end of the vaporized body 6, and reaches the gas ejection inner wall 9. Fuel splashing wall 1a from fuel splashing end 10 provided at the end
The object is scattered and collided with the object. However, the fuel scattering wall 1a that the scattered fuel collides with is heated to a temperature that softens the viscosity of the fuel, so the viscosity of the collided scattered fuel is softened without being evaporated due to the heating effect. Due to the impact, a part of the fuel becomes fine particles and is further scattered around, so that the fuel is instantaneously ignited by the live combustion ignition plug 23 and raw combustion of red flame occurs within the combustion tube 1. Therefore, even if the burner is started in winter in a cold region, the heating action of the heater 22 allows the red-fire live combustion to be started instantaneously and accurately.

When raw combustion occurs in the combustion tube 1, the combustion flame heats the vaporized body 6, and the vaporized body 6 rapidly reaches the vaporization temperature of the fuel. Therefore, the fuel supplied to the inner circumferential surface of the top end of the vaporized body 6 is rapidly evaporated and vaporized while being diffused and transferred along the inner circumferential surface of the vaporized body 6 due to the rotational centrifugal action. However, in the above-mentioned combustion state, since a part of the forced air is distributed from the blowing chamber 2 toward the inside of the vaporized body 6, the evaporated vaporized gas generated in the mixed gas passage 15 is mixed with the flowing forced air. The mixture is stirred and mixed to become a mixed gas, which passes through the gas stirring cylinder 8 and enters the gas chamber 5. After being further stirred and mixed, a part of the mixed gas is sent from the gas jetting passage 13, and the other part is sent to the combustion plate 3. Since the fumarole combustion is vigorously carried out from the gas ejection holes 4 and the vaporized body 6 is heated, emptying gas can be continuously generated from then on and good vaporized combustion can be stably continued.

Note that it is not necessary to energize the heater 22 after the fuel has been burned raw.

In short, the present invention moves kerosene or other liquid fuel from the fuel scattering end 10 to the combustion tube 1 through the rotational action of the vaporizer 6.
This is a vaporizing burner that quickly evaporates and vaporizes the supplied fuel by heating the vaporized material with the generated raw combustion flame and vaporizes and burns it as mixed gas. Even though
A part of the fuel does not evaporate and vaporize, but is scattered around the entire circumference of the fuel scattering wall 1a with which the fuel splashed toward the combustion tube 1 from the fuel scattering end 10 of the vaporized body 6 collides with the fuel scattering wall 1a. Furthermore, a heater 22 is provided to heat the fuel to soften the viscosity of the fuel to the extent that it is dispersed into fine particles, and even if the vaporizing burner is started in a cold region or in winter, the scattered fuel will not reach the fuel scattering wall 1a. It is possible to actively disperse the particles into the surrounding area by collision action without contacting them, and ensure instant ignition combustion with the raw combustion ignition plug 23. As a result, the start of vaporization combustion is quick and there is no bad odor. The effect can be achieved stably without any occurrence of.

[Brief explanation of drawings]

The drawings show one embodiment of the device of the present invention, in which Fig. 1 is a longitudinal sectional front view with a portion cut away, and Fig. 2 is a partially cutaway view in which the heater is installed only near the ignition plug installation. FIG. 3 is a partially cutaway longitudinal sectional front view of another example of the vaporizing burner shown in FIG. 1. DESCRIPTION OF SYMBOLS 1... Combustion cylinder, 1a... Fuel scattering wall, 5... Gas chamber, 6... Gaseous body, 10... Fuel scattering end, 22
... Heater, 23 ... Live combustion ignition plug.

Claims (1)

[Claims] 1. A vaporized body with a closed tip and an end on the open base side as a fuel scattering end is rotatably disposed in a combustion tube with an open tip, and a connection between the combustion tube and the open base side of the vaporized body is provided. In the case where a gas chamber communicating with the inside of the vaporizer is disposed between the combustion tubes, a part of the fuel scattered from the fuel scattering end is not evaporated and vaporized on the entire circumference of the fuel scattering wall of the combustion tube. A heater is installed to heat the fuel to soften the viscosity of the fuel to the extent that it is further scattered into the surrounding area by the collision action of the fuel, and to promote the ignition of the red-hot combustion. A device for accelerating live combustion ignition in a vaporizing burner, characterized in that: