JPS6040764B2 - 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 mixes the evaporated vaporized gas with combustion air to form a mixed gas and vaporizes and burns the mixture.

In a vaporizing burner, fuel oil such as kerosene is dispersed into fine particles in a vaporizing cylinder, evaporated and vaporized, and mixed with combustion air supplied as forced air to form a mixed gas that is vaporized and burned. The mixed gas generated in the vaporization cylinder is temporarily stored in the gas chamber, and then ejected from the nozzle at a constant pressure for vaporization and combustion.

Therefore, when the amount of fuel supply and air blowing are significantly reduced in order to reduce the amount of vaporized combustion using a vaporizing burner as described above, the amount of air-fuel mixture increases compared to the area of the flame hole. The amount of gas decreases extremely, and the negative pressure from the flame hole becomes unable to maintain the specified pressure.As a result, the speed and pressure of steam gas ejection from the flame hole decreases significantly, which causes the gas chamber to collapse. There was a risk of backfire development, which could catch fire. In view of the foregoing, the present invention provides a flame hole opening/closing body that can be freely adjusted up and down in accordance with the left and right rotation of the sliding ring body to close or open a part of a large number of flame holes. This is an attempt to provide a vaporization burner that can achieve gasification combustion over a long period of time without causing backfire combustion even when the amount of air-fuel mixture generated is extremely small. DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will now be described with reference to preferred embodiments shown in the accompanying drawings.

In Figures 1 to 3, reference numeral 1 denotes a bottomed cylindrical combustion tube with an open tip and a closed base end, and the bottomed side of the combustion tube 1 has many false flame holes 3 on its surface. A perforated combustion plate 2 is laid and installed, and a gas chamber 4 of an appropriate capacity is installed between the combustion plate 2 and the combustion tube 1.
to form.

An air supply chamber 5 is placed adjacent to the bottomed side of the combustion tube 1, and the combustion tube 1 and the air supply chamber 5 communicate with each other through a vent hole 6. Note that an opening 7 is provided in the center of the combustion plate 2 in correspondence with the vent 6 of the combustion tube 1.

Reference numeral 8 denotes a cylindrical vaporization tube with a closed tip and an open base end. It is installed over the

Reference numeral 10 denotes a blower tube, and the blower tube 10' is deeply inserted from the vent 6 of the combustion tube 1 toward the distal end side of the vaporizer tube 8, and there is a gap between the vaporizer tube 8 and the blower tube 10. A moisture passage 11 is formed, and the moisture communication passage 11 communicates with the gas chamber 4 through the entrance part 7 at the base end side.

A hollow inverted conical fuel diffuser 12 is fixed to the tip of the vaporizing tube 8 so as to face the tip of the blower tube 10, and the tip of the fuel supply pipe 13 is closely opposed to the inner surface of the fuel diffuser 12. has been done.

A humid gas passage 1 is provided in the center of the proximal open end of the vaporizer cylinder 8.
5 is integrally attached to the end of the vaporizing cylinder 8 so that a fuel scattering gap 16 is formed between the annular moisture body 14 and the fuel scattering end 17 provided at the periphery of the mixture gas 14. are bent to expand toward the open end of the combustion tube 1. The gas chamber 4 is located at a position facing the gas mixture 14 mounted on the open side of the carburetor tube 8, and the combustion plate 2 is recessed toward the bottomed side of the combustion tube 1 to connect the base end open side of the carburetor tube 8 and the gas chamber 4. An annular crane gas dilution chamber 18 is formed between the two.

The base end side of the moat gas dilution chamber 18 communicates with the gas chamber 4, and the tip side is directed diagonally upward toward the open end side of the combustion tube 1 by the mixed gas 14 and the jet arm 19 stretched over the inner surface of the recess. Open it. 20 has air mixture gas dilution chamber 1 at one end.
8 is a vent pipe made up of a plurality of pipes connected at the middle and the end of the pipe is connected to the air supply chamber 5, and 21 is an ignition plug attached to the combustion tube 1 in the vicinity of the false flame hole 3.

Reference numeral 22 denotes a flame hole opening/closing body that can completely close or open some of the numerous flame holes 3 drilled on the surface of the combustion disk 2, and the false flame hole opening/closing body 22 The whole is formed into a ring shape and is housed in the gas chamber 4, and the upper surface which comes into pressure contact with the combustion disk 2 is formed into a ring.

The false flame hole opening/closing body 22 is configured to be freely moved up and down between the bottomed side of the combustion tube 1 and the combustion disk 2. The configuration for raising and lowering the flame hole opening/closing body 22 is particularly detailed in FIG. That is, the free end side of the push-up pin 23 whose base end side is fixed to the ring-shaped flame hole opening/closing body 22 is made to penetrate into the wall tube 24 forming the air supply chamber 5 and protrude into the air supply chamber 5. Inside the cylindrical wall 24, a sliding moat body 26 is positioned, which can be freely slid and rotated in the left and right direction by a beach birch 25 that can move along a long hole 27 provided in the cylindrical wall 24. A notch 28 is provided in the sliding ring 26 at a position facing the pin 23, and a push-up swash plate 29 made of an elastic material whose one end is attached to the bamboo sliding ring 26 is tilted diagonally downward into the notch 28. The free end side of the push-up pin 23 is mounted on the push-up swash plate 29. Therefore, the sliding ring body 2
The push pin 23 mounted on the push-up swash plate 29 is adjusted up and down according to the left and right rotation of the push-up plate 6, and the hole opening/closing body 22 opens or holes a part of the false flame hole 3. It is possible to increase or decrease the amount of combustion.

In addition, if a heat-resistant adhesion material such as asbestos is attached to the upper surface of the counterfeit hole opening/closing body 22, the combustion plate 2 and the flame opening/closing body 22 will be in close contact with each other, and when the hole is closed, mixed gas will be released. It can prevent leakage and combustion.

FIGS. 4 and 5 show other examples of maintaining airtightness when the false flame hole is closed as described above. That is, the embodiment shown in FIG. 5 has a stepped portion 30 that allows the ring-shaped flame hole opening/closing body 22 to be completely inserted into the combustion plate 2 in which the flame hole 3 is bored.
In the embodiment shown in FIG. 5, the combustion plate 2 is
An annular bulging groove 31 is formed in the flame hole opening/closing body 22.
In this embodiment, an upright annular wall 32 which is inserted with iron into the bulging groove 31 is made to stand upright. In addition, in the embodiment of the present invention,
The left and right rotation of the oak moving ring body 26 is manually operated by the swamp moving ring 26.
Although this is achieved by rotating the pump 5 in the left and right directions, this may also be done mechanically or electrically in conjunction with the adjustment operations of the surface feed amount and the oil feed amount.

Further, a plurality of push-up pins 23 can be used in order to move the flame hole opening/closing body 22 up and down in a level state.

Therefore, the same number of push-up swash plates 29 as push-up pins 23 are provided. Next, the operation of the present invention will be explained.

In the embodiment shown in FIGS. 1 to 3, if the burner is started now, the carburetor cylinder 8 will be rotated at high speed, and combustion air will be forced into the carburetor cylinder 8 from the air supply chamber 5. At the same time, a portion of the combustion air is forced into the humid gas dilution chamber 18.

In this state, fuel is supplied from the fuel supply pipe 13 to the fuel diffuser 12.
When the fuel is supplied to the surface, the fuel is atomized by the fuel diffuser 12 and transferred to the inner surface of the vaporization tube 8, and while it is further transferred along the vaporization tube 8, it is affected by the rotation of the vaporization tube 8 and the lighting effect of the forced wind. After being diffused into even finer particles, the fuel is dispersed into the combustion tube 1 through the fuel diffusion gap 16, and is ignited by the spark plug 21 to generate raw combustion. When raw combustion occurs in the combustion tube 1 in this way, the combustion heat rapidly heats the vaporization tube 8 to a high temperature, so that the fuel that is subsequently scattered in the vaporization tube 8 is evaporated and vaporized.
While flowing through the moisture passage 11, it mixes with the combustion air blown from the blower tube 10 to form a mixed gas, which is stored in the gas chamber 4. Then, the mixed gas stored in the gas chamber 4 is ejected into the combustion tube 1 at a constant pressure from a large number of opening holes 3.
A part of the air-fuel mixture gas that is vaporized and burned by ignition also enters the humid gas dilution chamber 18, enters the combustion tube 1 from the tip side, and attempts to burn. However, the ventilation pipe 20 is in the air gas dilution chamber 18 from the start of vaporization combustion.
Since the combustion air in the air supply chamber 5 is sent through the
The incoming moat gas mixes with this combustion air, becomes a diluted mixture gas, and is released into the combustion tube 1 without being combusted.
It is ejected and mixed with the previous vaporized combustion flame, and is then vaporized and burned. Therefore, during the continuation of vaporization combustion, the base end open side of the vaporization cylinder 8 can be accurately rotated without being deformed by burnout, and good vaporization combustion can be performed. It is possible to prevent ignition and combustion from occurring inside. By the way, when reducing the above-mentioned vaporization combustion amount for the purpose of use and performing a small amount of vaporization combustion, after reducing the amount of oil supplied from the oil supply pipe 13 and the amount of air blown from the air supply chamber 5, the sliding camphor 25 is Rotate it clockwise in the state shown in Figure 2.

Then, the sliding ring body 26 and the push-up swash plate 29 are both rotated clockwise, and the push-up pin 23 mounted on the push-up swash plate 29 is raised. Therefore, the flame hole opening/closing body 22 integrated with the push-up pin 23 rises horizontally, and the flame hole opening/closing body 22 completely covers some of the many flame holes 3 which are pressed against a part of the combustion plate 2. Open a hole. As a result, even if the amount of passing air gas decreases, the pressure of the dense gas is maintained at a predetermined value because the flame hole 3 is closed when the amount of air is equal to the humidity, so it is rumored that the pressure of the dense gas is maintained at a predetermined value. Concentrated gas is ejected from the flame hole 3 into the combustion tube 1 at an irregular injection speed and pressure, and while normal vaporization combustion continues within the combustion tube 1, flashback development that ignites the gas chamber 4 occurs. It can be prevented. In short, the present invention has the above-mentioned configuration, and the sliding ring body 26 in the gas chamber 4 is freely adjusted to move up and down according to the left and right rotation of the ring body 26, so that a part of the large number of false flame holes 3 can be closed. Since the flame hole opening/closing body 22 is installed, which can open or close the flame hole opening/closing body 22, the amount of vaporized combustion can be easily adjusted by simply raising and lowering the flame hole opening/closing body 22, resulting in large capacity vaporizing combustion and small capacity. In addition to being able to easily carry out vaporization combustion, it also prevents the flashback that ignites the gas chamber 4, which tends to occur during small-volume vaporization combustion, and makes it possible to adjust the combustion amount over a wide range. play.

[Brief explanation of the drawing]

The drawings show an embodiment of the vaporization burner according to the present invention, in which FIG. 1 is a partially cutaway longitudinal sectional front view, FIG. 2 is a partially cutaway enlarged perspective view of the main part, and FIG. Figure 3 is a partially cutaway front view with the combustion amount reduced, and Figures 4 and 5 are partially cutaway longitudinal sections showing a modified embodiment in which the combustion disk and the flame hole opening/closing body are in close contact with each other. It is a front view. 1... Combustion cylinder, 2... Combustion plate, 3...
...flame hole, 4...gas chamber, 8...vaporization tube, 22...rumored flame hole opening/closing body, 26...sliding ring body. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. A rotatable vaporization cylinder is disposed within a combustion cylinder that has a gas chamber with a large number of flame holes, and the base end open side of the vaporization cylinder communicates with the gas chamber, and the gas chamber is connected to the gas chamber. This vaporizing burner is equipped with a flame hole opening/closing body that can be freely adjusted up and down according to the left and right rotation of a sliding ring body to open or open some of the numerous flame holes.