JPS6157523B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vaporizing burner that evaporates fuel from a raw combustion state upon ignition, and mixes the evaporated gas with combustion air to form a mixed gas.

In the case of a vaporizer burner that vaporizes and burns fuel such as kerosene, the fuel is dispersed into fine particles, evaporated and vaporized, and then mixed with combustion air supplied as forced air to form a mixed gas. However, in order to always maintain a good and stable vaporization combustion state, the evaporated vaporized gas of the fuel and the combustion air must be mixed evenly and sufficiently to form a homogeneous gas mixture. It is essential to continue supplying

In view of the above, the present invention forms a bag-shaped wide gas mixture chamber in a rotary vaporizer that atomizes fuel oil, evaporates it, and mixes it with combustion air to form a mixed gas. The entrance of the air mixture passage that connects the air passage to the chamber and the gas chamber that stores the air mixture and injects the air mixture into the combustion cylinder at a constant pressure is connected to the upper end of the air cylinder. By forming each cylinder separately with a blow guide plate facing the opening of the cylinder, the evaporated vaporized gas of the fuel generated in the gas mixture chamber and the combustion air are circulated within the wide bag-shaped gas mixture chamber. In addition to evenly and sufficiently mixing the gas between the two gases, the mixture is stirred and mixed while flowing under compression through a narrow gas mixture passage, and the gas can be sent to the gas chamber as a homogeneous gas mixture. The present invention is intended to provide a vaporizing burner capable of maintaining a stable vaporizing combustion state, and the configuration of the present invention will be described below with reference to preferred embodiments shown in the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a combustion tube with an open top end and a closed bottom surface, and an air supply chamber 2 is connected to the bottom side of the combustion tube 1. As shown in FIG. Reference numeral 3 denotes a rotary vaporizer, and the rotary vaporizer 3 has a cylindrical shape with a closed upper end, a bulged portion 4 whose central portion is bulged outward, and an open base end. The rotary shaft 5 is inserted into the center of the combustion cylinder 1 from the air supply chamber 2 side, and is fixed to the tip of the rotary shaft 5 so as to cover the rotary shaft 5. An annular fuel diffusion plate 6 is fixed to the upper end portion of the rotary vaporizer 3 with a fuel oil outflow gap 7 corresponding to the lower side of the peripheral wall of the upwardly bulging portion 4. The tip of the oil supply pipe 8 is exposed to the upper surface of the tank. Reference numeral 9 denotes a blower tube, and the blower tube 9 is located at the center of the rotary vaporizer 3, its base end communicates with the air blowing chamber 2, and its upper end communicates with the upper end of the rotary vaporizer 3. It's coming. Reference numeral 10 denotes a gas chamber, and the gas chamber 10 is formed between the base end side of the rotary vaporizer 3 and the bottom surface of the combustion tube 1. That is, the inner circumferential end of the gas chamber bottom wall 11 forming the gas chamber 10 is connected to the base end of the blow tube 9, and the outer circumferential side thereof is bent upwardly. Reference numeral 12 denotes an upper wall of the gas chamber. The upper wall 12 of the gas chamber constitutes the inner side of the upper surface of the gas chamber 10, and its outer peripheral end is connected to the outer bent edge of the rotary vaporizer 3, where fuel is scattered. They are mounted facing each other with a gap 13 in between, and are further bent diagonally upward to form a fuel splashing end 14. 15 is a flaming disk,
The blow disk 15 is an annular member that covers between the outer peripheral edge of the gas chamber upper wall 12 and the rising edge of the gas chamber bottom wall 11, and the blow disk 15 is provided with a large number of blow holes 15a. ing. Furthermore, the base end of a gas mixture cylinder 16 that is concentric with the outer peripheral side of the blower tube 9 is connected to the inner peripheral end of the gas chamber upper wall 12, and a gap between the gas mixture cylinder 16 and the blower tube 9 is connected to the inner peripheral end of the gas chamber upper wall 12. An air mixture passage 17 is formed in. 18 is a gas mixture chamber, and the gas mixture chamber 18 is connected to the peripheral wall inside the rotary vaporizer 3 and the gas mixture cylinder 16.
It is surrounded by the outer periphery of

The upper end side of the blower tube 9 is a blower guide plate 19 which is bent and extended outward in a brim shape so as to face the opening of the gas mixture chamber 18, and the upper side of the blower guide plate 19 and the rotary vaporizer are connected to each other. There is a ventilation path 20 between the upper surface of
However, between the lower surface side and the upper end of the gas mixture cylinder 16, an air mixture passage inlet 21 is formed separately.

Note that 22 is a heater attached to the outer peripheral wall of the combustion tube 1, 23 is a passage gap between the bottom surface of the combustion tube 1 and the bottom wall 11 of the gas chamber, and 24 is a spark plug. 25 is gas chamber 1
This gas mixture promotion tube 25 is provided inside the gas mixture promotion tube 25, and the gas mixture promotion tube 25 may be provided at a position retreated inward as shown by the chain line.

The one shown in FIG. 2 is another example of the above-mentioned embodiment, and has the same configuration except that a blow disk 15 is provided on the outer peripheral surface of the gas chamber 10.

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

If you start the burner now, the rotary vaporizer 3
is rotated at high speed, and combustion air is forcibly blown from the air supply chamber 2 toward the combustion cylinder 1, and fuel is supplied from the fuel supply pipe 8 onto the fuel diffusion plate 6. For this reason,
The fuel is subjected to centrifugal force on the fuel diffusion plate 6 and is diffused into fine particles from the fuel outflow gap 7 into the rotary vaporizer 3, and is then sent to the combustion tube from the fuel scattering gap 13 along with the forced air blown from the blower tube 9. 1 and is ignited by the ignition plug 25, a raw combustion flame is generated within the combustion tube 1. When a raw combustion flame is generated in the combustion tube 1, the rotary vaporizer 3 is rapidly heated to a high temperature by the combustion heat.
The fuel supplied into the gas mixture chamber 18 is evaporated and vaporized and remains in the gas mixture chamber 18, but fuel for combustion is passed from the blower tube 9 through the air passage 20 and the opening of the gas mixture chamber 18. Since the air is blown as forced air, the evaporated gas of the fuel and the combustion air are stirred and mixed in the gas mixture chamber 18 to form a mixture gas, and the mixture gas is passed through the mixture passage inlet 21 and the mixture passage 17. The air is then sent to the gas chamber 10 and stored there. gas chamber 1
The mixed gas stored at zero is ejected into the combustion tube 1 at a constant pressure from a large number of flame holes 15a of the flame plate 15, and is vaporized and burned within the combustion tube 1. After the transition to vaporization combustion, the rotary vaporizer 3 continues to be heated to a high temperature by the combustion heat, so that the vaporization combustion state continues.

In addition, when starting the burner in cold weather or when a small amount of fuel is supplied, if the heater 22 is heated for a very short time to preheat the combustion tube 1, the fuel sprayed into the combustion tube 1 can be ignited. Moreover, the raw combustion flame can be stabilized in a very short time, and the transition to vaporization combustion can be promoted.

By the way, the air passage 20 that communicates the gas mixture chamber 18 and the blower tube 9 in the rotary vaporizer 3 and the air mixture passage 1 that sends air mixture gas to the gas mixture chamber 18 and the gas chamber 10
The air mixture passage entrances 21 of No. 7 are each divided into sections by ventilation guide plates 19 that are integrally formed at the upper end of the air cylinder 9 and extend toward the opening of the gas mixture cylinder 16. The evaporated gas of the fuel generated in the wide gas mixture chamber 18 is transferred to the gas mixture chamber 18.
The airflow path 20 is temporarily stagnated while being circulated inside the air passage 20.
In addition to being evenly and sufficiently stirred and mixed with the combustion air that flows in, the air is further forcibly distributed through the air mixture passage 17, which is narrower than the air mixture passage entrance 21, in a compressed state while being stirred and mixed. , it becomes a complete mixed gas and is sent into the gas chamber 10. Therefore, the mixed gas is always homogeneous, and a good and stable vaporization and combustion state can always be maintained.

In short, the present invention provides a cylindrical rotary vaporizer 3 with an upper end closed and a base end open in a combustion tube 1, and a blower tube 9 disposed in the center of the rotary vaporizer 3 from the base end side to the upper end side. A bag-shaped wide gas mixture chamber 18 is formed on the outer peripheral side of the gas chamber 18 by inserting the gas chamber 10 into the gas chamber 10. A gas mixture cylinder 16 is installed on the outer circumferential side of the blow tube 9 so as to extend from the inner circumferential end of the gas chamber 10 into the gas mixture chamber 18 and into the gas chamber 10, respectively. The upper end of the blow tube 9 is bent and extended outward in a brim shape toward the opening of the gas mixture cylinder 16 to form a blow guide plate 19.
Since the air passage 20 is divided between the upper surface of the air guide plate 19 and the upper surface of the rotary vaporizer 3, and the air mixture passage inlet 21 is formed between the lower surface thereof and the upper end of the gas mixture cylinder 16, Vaporized fuel gas generated in the bag-shaped wide gas mixture chamber 18 and the air passage 2
The combustion air supplied from the gas mixture chamber 18 is circulated through the wide gas mixture chamber 18, and while it remains there, the mixture is evenly and sufficiently stirred and mixed to form a mixture gas. While flowing through the narrow air mixture passage 17 in a compressed state, the mixture is stirred and mixed and can be sent to the gas chamber 10 as a completely homogeneous air mixture. As a result, a good and stable vaporization combustion state is always maintained. It has the effect of being able to be maintained.

[Brief explanation of the drawing]

The drawings show an embodiment of the vaporizing burner according to the present invention, in which FIG. 1 is a partially cutaway longitudinal sectional front view, and FIG. 2 is a partially cutaway vertical sectional front view of another example. 1... Combustion tube, 3... Rotating vaporizer, 9... Blower tube, 10... Gas chamber, 16... Gas mixed cylinder, 17
...Mixture passageway, 18...Gas mixture chamber, 19...Blower guide plate, 20...Blower passage, 21...Mixture passageway entrance.

Claims (1)

[Claims] 1. A cylindrical rotary vaporizer with the upper end closed and the base end open is provided in the combustion cylinder, and a blower tube is inserted into the center of the rotary vaporizer from the base end side to the upper end side, and a bag-shaped cylinder is inserted on the outer periphery of the cylinder. A wide gas mixture chamber is formed between the base end of the rotary vaporizer and the bottom of the combustion tube, and the gas chamber and the gas mixture chamber are arranged concentrically with the outer circumferential side of the blast tube. The inner circumferential end of the gas chamber communicates with the gas mixture chamber through an air mixture passage formed by a gas mixture cylinder and a gas mixture cylinder installed vertically into the gas chamber, respectively, and an opening of the gas mixture cylinder. The upper end of the blower tube is bent outward in a brim shape to form a blower guide plate, and a blower passage is formed between the upper surface of the blower guide plate and the upper surface of the rotary vaporizer, and the gas mixture is connected to the lower surface of the blower tube. A vaporizing burner characterized in that an air-fuel mixture passage inlet is formed separately between the upper end of the cylinder and the upper end of the cylinder.