JPS6038606B2 - vaporizing burner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention evaporates fuel from a raw combustion state at the time of ignition,
The present invention relates to a vaporizing burner that vaporizes and burns the evaporated vaporized gas by mixing it with combustion air to form a hawk gas.

Fuel oil such as kerosene is dispersed into fine particles in a rotary vaporizer, evaporated and vaporized, and then mixed with combustion air supplied as forced air to form a mixed gas, which is vaporized and burned in a vaporization burner. In this system, the moat gas generated in the rotary vaporizer is first stored in the gas chamber, and then ejected from the flame hole at a constant pressure to vaporize and burn it. If the air flow rate is significantly reduced, the amount of steam and gas in the gas chamber will decrease, making it impossible to maintain the specified pressure, and as a result, the speed and pressure of mixed gas jetting out from the flame hole will drop significantly. This created a risk of flashback, which could ignite the gas chamber.

In view of the above, the present invention has been proposed by interlockingly adjusting the effective volume of the gas chamber and the opening area of the flame hole in proportion to the amount of air supplied from the blast tube into the rotary vaporizing body, so that the amount of air sent from the blower tube is adjusted. Even if the air volume changes over a wide range, the air-fuel mixture pressure in the gas chamber is always maintained at a predetermined value, and the velocity and pressure of humid gas ejected from the nozzle are maintained constant to adjust the amount of combustion. Even when the amount of combustion is significantly reduced, it is possible to maintain a normal combustion flame, and it is possible to prevent flashback phenomenon that could ignite the gas chamber, making it possible to adjust the amount of combustion over a wide range. The present invention is intended to provide a burner, and the configuration of the present invention will be described below with reference to preferred embodiments shown in the accompanying drawings.

In Figures 1 to 4, 1 is a cylindrical combustion disc with an open tip and a closed base, 2 is an outer cylinder that covers the outer periphery, and there is a space between the combustion disc 1 and the outer cylinder 2. A gas chamber 3 is formed, and a large number of flame holes 4 are bored in the circumferential surface of the combustion disk 1.

Reference numeral 5 denotes a cylindrical rotary vaporizer whose tip end is closed and whose base end is open. It is fixed.

Reference numeral 7 denotes an air supply chamber provided at the proximal end of the outer cylinder 2, and an air supply port 8 that extends into the air supply chamber 7 is provided in the center of the outer cylinder 2.

Reference numeral 9 denotes a blower tube, and the blower tube 9 is located in the center of the rotary vaporizing body 5, and includes a blower guide tube 10 that is connected to the upper rail blower port 8 of the outer tube 2 and is erected, and a blower tube 9 that slides thereon. It is composed of a movable blower tube 11 that is freely mounted overboard, and the tip of the movable blower tube 11 faces the tip inside the rotary vaporizer 5.

An inverted conical fuel diffuser 12 is located at the tip of the rotary vaporizer 5.
is fixed, and an air supply square 13 is formed between the outer peripheral surface of the fuel oil diffuser 12 and the tip of the movable blower tube 11 of the blower tube 9. 14 is an oil supply pipe, and the oil supply pipe 14
The tip of the fuel diffuser 12 is located close to the interior of the fuel diffuser 12.

A mixed air channel 15 is formed in the rotary vaporizer 5 between it and the blow tube 9, and the moisture passage 15 communicates with the gas chamber 3 at the base end side of the rotary vaporizer 5. Reference numeral 16 denotes a fuel scattering body, which is fixed to the base end side of the rotary vaporizer 5 with a fuel scattering gap 17, and its outer peripheral edge serves as a fuel diffusion end 18. .

Inside the gas chamber 3, a volume adjusting movable body 19 shaped along the bottom and outer peripheral surface of the gas chamber 3 is provided so as to be slidable up and down.
The green inner peripheral end thereof is integrally connected to the base end of the movable blower tube 11. Further, on the upper circumferential side of the volume adjusting movable body 19, a flame hole shielding body 20 is fixed by a plurality of holding pieces 21 along the outer circumferential surface of the combustion fuel 1, and is integrated with the volume adjusting movable body 19. It is vertically slidable to adjust the opening area of the flame hole 4. 22 is a sliding guide hole for the movable blower tube 11, and 23 is a guide hole formed by the blower guide punch 101 for vertical movement thereof.

FIGS. 5 and 8 show other examples of the embodiment described above. In this embodiment, vaporized gas is ejected upward, and a gas chamber 3' is formed at the bottom of a horizontal combustion plate 1' and an outer cylinder 2'. Inside, there is a volume adjusting movable body 19 that moves with the movable blower tube 11 of the blower tube 9.
' is provided. The volume adjustment movable body 19' has a horizontal surface 19a' that faces a large number of flame holes 4' of the combustion plate 1', and when the movable blast tube 11 is raised to the highest level, the flame holes 4' The entire perforated Akebono surface is now covered. Note that this horizontal surface 19a' may have a shape that partially closes the floor surface as shown by the chain line. An air adjustment plate 24 facing the air outlet 8 is attached to the sliding plate 22. 25 is a spark plug.

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

In the embodiment shown in FIGS. 1 to 4, the current bar
When the starting operation is performed, the rotary vaporizer 5 is rotated at high speed,
Combustion air is forcibly blown from the air supply chamber 7, and fuel oil is supplied from the fuel supply pipe 14 to the surface of the fuel diffuser 12.

Therefore, the fuel is diffused into fine particles inside the rotary vaporizer 5 due to centrifugal force on the circumferential surface of the fuel diffuser 12, and is also transported from the fuel scattering gap 17 to the combustion plate along with the forced air blown from the blower tube 9. When the number of lights is lit within 1 and ignited by a spark plug (not shown), raw combustion occurs within the combustion disk 1. When raw combustion occurs in the combustion disk 1, the rotary vaporizer 5 is rapidly heated to a high temperature by the heat of combustion, so that the fuel that is subsequently dispersed in the rotary vaporizer 5 is evaporated and vaporized, and the air-fuel mixture is vaporized. Passage 1
While flowing through the gas chamber 5, it is mixed with combustion air blown from the blower tube 9 to form a mixed gas, which is stored in the gas chamber.
The humid gas stored in the gas chamber 3 is ejected into the combustion disk 1 at a constant pressure from the floor flame hole 4 of the combustion disk 1, and is vaporized and burned within the combustion disk 1. After the transition to vaporization combustion, the rotary vaporizer 5 continues to be heated to a high temperature by the combustion heat, so that the vaporization combustion state continues. By the way, when the movable blower tube 11 of the blower tube 9 is at its lowest position and the blower tube 9 is shortened, the air supply □1
3 is large, and the volume adjusting movable body 19 in the gas chamber 3 is at the lowest position, the volume in the gas chamber 3 is large, and the combustion amount and air blowing amount are in the maximum state.

To make an adjustment to reduce the combustion amount, push the sliding guide village 22 upwards by an appropriate means.The movable blower tube 11 of the blower tube 9 moves upward in proportion to the amount of refueling, and the air blower rotor 3 becomes narrower, the amount of air blown decreases, and the volume adjusting movable body 19 inside the gas chamber 3 also works up to reduce the effective volume inside the gas chamber 3. Therefore, even if the amount of humid gas decreases, the gas chamber 3 The pressure of the mud gas inside is maintained at a predetermined value. Moreover, since a part of the false flame surface where the false flame holes 4 are drilled is blocked by the false flame hole shielding body 201, a predetermined jetting speed and a predetermined ejection velocity are emitted into the combustion disk 1 from the open false flame holes 4. Humid gas is ejected under pressure, and normal vaporization combustion continues within the combustion disk 1. Moreover, a flashback phenomenon in which the gas chamber 3 ignites can be prevented. In the other embodiments shown in FIGS. 5 and 8, when the combustion amount is reduced, the effective volume in the gas chamber 3' can be adjusted as in the case of the previous embodiment. Since the amount is reduced by the body 19', a normal combustion state commensurate with the amount of oil supply and the amount of air blown can be maintained.

In this embodiment, the water surface 19a' of the volume adjusting movable body 19' faces below the upper flame surface of the combustion plate 1, and when the effective volume of the gas chamber 3' is reduced, the flame Since the path of the mixed gas leading to the surface is narrowed, when the amount of mixed gas is small, the mixed gas can be ejected from the flame hole 4' without accumulating at the end, and the amount of humid gas is extremely small. (Even if the amount is small, it is possible to maintain the gas mixture jetting speed and pressure from the fin flame hole 4' at a predetermined value. In short, the present invention has a cylindrical shape with a distal end open and a proximal end closed, and a large number of flame holes 4.
A gas chamber 3 is formed between a combustion disk 1 having a combustion disk 1 and an outer cylinder 2 that covers the outer periphery of the combustion disk 1, and a cylindrical rotary vaporizer 5 with a closed tip and an open base end is formed in the combustion disk 1. An air supply port 13 is formed in the center of the rotary vaporizer 5 with its tip facing the distal end inside the rotary vaporizer 5, and its base end is connected to the air supply chamber 7 on the base end side of the outer cylinder 2. A blower tube 9 is provided with a telescopic end connected to the gas chamber 3, and a volume adjustment device is provided in the gas chamber 3 to adjust the effective volume of the gas chamber 3 and the closed area of the flame hole 4. A movable body 19 is provided, and the volume adjusting movable body 19 and the blower tube 9 are moved, and air is supplied by expansion and contraction of the blower tube 9 □1
Since the volume of the gas chamber 3 and the opening area of the flame-damage hole 4 are adjusted in conjunction with each other in proportion to the degree of opening of the gas chamber 3, the gas When the amount of combustion is significantly reduced by adjusting the amount of combustion by keeping the accumulated pressure of the air gas in the chamber 3 at a predetermined value and keeping the speed and pressure of the air gas ejected from the flame hole 4 constant. Even in such a case, it is possible to maintain a normal combustion flame, and it is also possible to prevent a backfire phenomenon in which the gas chamber 3 is ignited, and the combustion amount can be adjusted over a wide range.

[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 cut-away longitudinal front view, and FIG. 2 is a partially cut-away longitudinal front view in a state where the combustion amount is reduced. 3 is a partial perspective view, FIG. 4 is a sectional view taken along the line A-A in FIG. FIG. 7 is a partially cutaway longitudinal sectional front view showing a state in which the combustion amount is adjusted to decrease, and FIG. 8 is a partially cutaway perspective view. 1. ．． ．． ．．・．． Combustion disk, 2... Outer cylinder, 3...
...Gas chamber, 4...Fake hole, 5...Rotary vaporizer, 9...Blower cylinder, 13...Air supply □, 19... ...Volume adjustment movable body. Figure 1 Figure 3 Figure 8 Figure 2 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] 1 A gas chamber is formed between a combustion disc with a large number of flame holes and an outer cylinder that covers the outer periphery of the combustion disc, and inside the combustion disc is a rotating cylindrical cylinder with a closed end and an open base. A vaporizer is provided, and an air supply port is formed in the center of the rotary vaporizer with its tip facing the distal end of the rotary vaporizer, and its base end is connected to the air supply chamber on the base end side of the outer cylinder. A blower tube whose tip end side is expandable and retractable is provided, and a volume adjustment movable body for adjusting the effective volume of the gas chamber and the area of the flame hole is provided in the gas chamber, and the volume adjustment movable body and the blower tube are connected to each other. A vaporizing burner characterized in that the volume of the gas chamber and the opening area of the nozzle hole are adjusted in conjunction with each other in proportion to the degree of opening of the air inlet due to expansion and contraction of the blast tube.