JPH0558549B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention involves installing a gas burner at an appropriate position within a resonant cylinder whose length is adjusted according to the pitch of each note constituting a musical scale. This invention relates to a gas burner for use in a flame organ configured to play music by controlling sound production depending on the state.

(Prior art and its problems) In a flame organ that generates resonance sound by the flame of a gas burner installed in a resonance cylinder,
When resonance occurs, the flame also vibrates violently at the resonance frequency, so the gas burner used for this
At this time, the important point is whether or not combustion can be sustained stably. However, since conventional flame organs use a single-hole nozzle as a burner, stable combustion can be achieved when using manufactured gas or hydrogen, which has a fast combustion rate, as fuel, but when using a fuel with a slow combustion rate, such as natural gas, However, there is a problem in that when a resonance sound occurs, it easily blows out.

In addition, the flame is localized in the axial direction inside the resonant cylinder.
It is better to install multiple burners because it is easier to resonate if they are distributed and spread out in the radial direction, but as mentioned above, stable combustion can be achieved even with natural gas, which has a slow combustion speed. If a conventional flame stabilizing mechanism is simply applied to sustain the burner, the outer diameter will increase, so it is difficult to properly install a plurality of such burners in the resonant cylinder.

It is an object of the present invention to solve the above-mentioned problems and to enable better control of sound production and muting.

(Means for solving the problems) The configuration of the present invention is shown in FIGS. 1 to 4 corresponding to embodiments.
To explain based on the drawings, the present invention includes a perforated plate 2 for forming a plane flame installed at the tip of a burner cylinder 1, and a plurality of flame ports 3 for resonant flames arranged on the outer circumferential side of the perforated plate 2. At the same time, a silencing flame opening 4 is arranged at an appropriate position around the resonant flame opening 3,
is a combustion gas supply pipe 5 passing through the burner cylinder 1;
The premixed gas can be freely supplied to the perforated plate 2 through the burner cylinder 1, and the fuel gas is supplied to the flame quenching flame port 4 through the fuel gas supply pipe 5. The main point is that it can be freely configured.

In the above configuration, the perforated plate 1 for forming a flat flame
In addition to being made of, for example, a sintered metal plate, it may be made of any suitable material such as a ceramic plate as long as it can form a flat flame. Next, as long as the flame quenching flame port 4 is arranged at an appropriate position around the resonance flame flame port 3, a plurality of flame ports may be arranged as appropriate, as shown in FIG. However, as shown in FIG. 2, it may be arranged in an annular shape on the outer circumference coaxially with the resonant flame nozzle 3.

Thus, the gas burner of the present invention is installed in a suitable position within the resonance tube 6 made of transparent glass or the like to constitute a unit sounding section A of a desired pitch, and a plurality of these are combined to constitute a flame organ. However, in the configuration shown in FIG. 3, the reference numeral 7 indicates a premixed gas supply pipe constructed on the upstream side of the burner cylinder 1, and the reference numeral 8 indicates a valve device provided in the fuel gas supply system.

(Function) In the above configuration, when the premixed gas is supplied into the burner cylinder 1 through the premixed gas supply pipe 7 and the burner is combusted with the valve device 8 closed, The resonant cylinder 6 generates a resonance sound by the flame 9 of the premixed gas ejected from the resonant flame flame port 3, and the flame 9 vibrates due to the vibration of the resonance sound to form a resonant flame 9. The resonance flame 9 is formed in a plurality of flame ports 3 arranged on the outer circumferential side of the perforated plate 1, and is arranged locally in the axial direction of the resonance passage 6 and spread out in a distributed manner in the radial direction. , it is possible to easily and efficiently cause the air column in the resonance tube 6 to resonate.

At the same time as the resonance flame 9 is formed, a stable plane flame 10 is formed on the surface of the perforated plate 2 by the seeping premixed gas, and this plane flame 10 supplies heat to the base of the resonance flame 9. Therefore, even when using a fuel with a slow combustion rate such as natural gas, the resonance flame 9 can be effectively prevented from being blown away during resonance, and stable combustion can be maintained. However, if the amount of combustion becomes excessive, this flat flame 10 will also vibrate itself at the time of resonance, and this vibration will not follow the resonant frequency of the resonant cylinder 6, resulting in noise. The filtration accuracy of the perforated plate 2 is adjusted so that the amount does not become excessive.

Next, in the above sounding state, when the valve device 8 is opened and fuel gas is supplied to the silencing flame outlet 4 through the fuel gas supply pipe 5, the resonance flame 9 becomes an ignition source, Above the flame opening 4, a long flame 11
is formed. In this way, the locally high temperature area in the axial direction within the resonance cylinder 6 due to the resonance flame 9 is buried in the wide temperature distribution in the axial direction of the long flame length flame 11, that is, the silencing flame 11, and disappears. flame 11
isolates the resonance flame 9 from the air flow inside the resonance cylinder 6, so resonance stops and the sound is muffled. Then, when the valve device 8 is closed again to stop the supply of fuel gas to the silencing flame nozzle 4, the silencing flame 11 disappears and the resonance flame 9 appears, causing resonance again and producing a sounding state.

As described above, in the present invention, by controlling the supply of fuel gas to the silencing flame nozzle 4 using the valve device 8 of the fuel gas system, sound generation and silencing can be easily and reliably controlled. In addition, since the resonance flame 9 that causes resonance is constantly formed during the performance, the responsiveness of sound generation and muting is good.

As an embodiment of the gas burner of the present invention, the porous plate 2 for forming a flat flame can be arranged so that the front end of the burner cylinder 1 constitutes a peripheral wall 12. In this case, as shown in FIG.
In combination with 0, the resonance flame 9 mentioned above blows out,
This can be prevented even more effectively. However, if the surrounding wall 12 becomes high, the resonance flame 9 will be gradually isolated from the air flow inside the resonance cylinder 6, and the sound pressure level of the resonance will decrease, so it is set at an appropriate height.

(Effects of the Invention) As described above, the present invention forms a resonance flame for generating resonance sound in a plurality of flame ports arranged on the outer circumferential side of a perforated plate for forming a flat flame, and localizes it in the axial direction. To,
Since they are distributed and spread out in the radial direction, the air column inside the resonance cylinder can be made to resonate efficiently, and the sound pressure level is high and stable resonance sound can be generated. There is an effect. Since a stable plane flame is formed around the resonance flame by the air-fuel mixture seeping out from the perforated plate, even when using a fuel with a slow combustion rate such as natural gas, the This has the effect of effectively preventing the resonance flame from blowing away and sustaining stable combustion. Such blow-off of the resonance flame can be prevented even more effectively if a peripheral wall formed by the tip of the burner cylinder is formed around the perforated plate. Furthermore, in the present invention, the resonance flame is constantly formed during a performance, and the resonance is stopped by forming a silencing flame with a long flame length at an appropriate location around the resonance flame, so that the control of sound generation and silencing is facilitated and reliable. This has the advantage of being able to perform a number of tasks, as well as having good responsiveness.

[Brief explanation of the drawing]

1 to 4 correspond to embodiments of the present invention, FIGS. 1a and 1b are a plan view of one example, a longitudinal sectional view taken along the line X-X, and FIG. 1c is a plan view of another example. Figure 2 a, b
3 is a plan view of another example, a vertical sectional view along the Y-Y line, FIG. 3 is a schematic overall explanatory diagram of the sounding section of a flame organ using the burner of the present invention, and FIG. 4 is an explanatory diagram of the main part showing the operation. . Code, 1... Burner cylinder body, 2... Perforated plate for plane flame formation, 3... Flame port for resonance flame, 4... Flame port for silencer flame, 5... Fuel gas supply pipe, 6... Resonance cylinder ,7...
... Premixed gas supply pipe, 8 ... Valve device, 9 ... Resonance flame, 10 ... Planar flame, 11 ... Silencing flame, 12 ...
... Surrounding wall, 13... Vortex, A... Unit sounding section.

Claims (1)

[Claims] 1. A perforated plate for forming a flat flame is installed at the tip of the burner cylinder, and the perforated plate is provided with a plurality of flame ports for forming a resonance flame on its outer circumferential side. A flame-suppressing flame port is arranged at an appropriate location around the flame port, and the flame-suppressing flame port is connected to a fuel gas supply pipe passing through the burner cylinder, and is connected to the perforated plate through the burner cylinder. A gas burner for a flame organ 2, characterized in that the premixed gas can be freely supplied, and the fuel gas can be freely supplied to the silencing flame flame port via the fuel gas supply pipe. Gas burner 3 for a flame organ according to claim 1, characterized in that the plate is installed so that a peripheral wall is formed by the tip of the burner cylinder body. The gas burner 4 for a flame organ according to claim 1 is constituted by a plurality of flame ports arranged around the periphery of the flame organ. Gas burner 5 for a flame organ according to claim 1. The gas burner for a flame organ according to claim 1, wherein the perforated plate for forming a flat flame is made of a sintered metal plate.