JPH0622717U - Gas burner - Google Patents

Abstract

(57) [Summary] [Purpose] A flame of a color suitable for viewing is generated, and the size of the flame can be adjusted while maintaining that color. In addition, it allows naked flames to be emitted even outdoors with strong wind and rain. [Structure] Combustion gas ejected from an ejection port 12 of a combustion cylinder 11 is laterally blown with air ejected from a nozzle hole 22 of an air supply cylinder 21 and sufficiently mixed. The jetting amounts of combustion gas and air are appropriately adjusted by a flow rate adjusting valve or the like.
As a result, a mixed gas having a mixing ratio necessary to generate a flame of an ornamental color, for example, an orange flame is generated, and the mixed gas is ignited by the flame of the pilot burner 16 to emit the orange flame. Since the combustion gas and air are sufficiently mixed, it is possible to easily adjust the size of the flame by adjusting the ejection amount of the combustion gas and air while maintaining the mixing ratio that produces a predetermined color. is there. Since the windshield 25 and the top plate 27 are provided at the flame outlet 26, it is possible to emit a bare flame even outdoors where the wind and rain are strong.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a gas burner that produces an ornamental flame.

[0002]

[Prior art]

 Flames are sometimes used for ornamental purposes. Candles, torches, gas burners, etc. are used as the means for generating flames. In particular, flames from gas burners are relatively easy to control in size and combustion time, and because they can be used for a long period of time, they are often used for various types of monuments.

[0003]

[Problems to be solved by the device]

 By the way, it is difficult to generate a flame with a color suitable for ornamentation with a conventional gas burner, and even if a flame with a predetermined color is generated, the size of the flame is adjusted while maintaining that color. Was almost impossible. Furthermore, the conventional gas burner has a weak surface against wind and rain, and when used outdoors, a transparent cover must be used to surround the gas burner, so when viewed from the outside, the flame color looks different. However, there is a problem that the flame becomes unsuitable for viewing, such as the shape of the flame being blurred.

Therefore, the present invention solves the above-mentioned problems, and it is possible to generate a flame of a color suitable for viewing at an arbitrary size, and a transparent cover is provided even in a place with strong wind and rain. It proposes a gas burner that can be used without it.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the present invention, gas jetting means for jetting the combustion gas from the jet outlet directed upward and air for blowing the combustion gas by blowing air from a direction intersecting the jetting direction of the combustion gas are provided. Air mixing means for mixing, igniting means for igniting the combustion gas ejected from the ejection port, and water drop prevention means arranged above the ejection port to prevent water droplets falling from above from entering the gas ejection means. And a windbreak means arranged around the ejection port.

[0006]

[Action]

 In FIG. 1, first, the combustion gas ejected from the pilot burner 16 is ignited by the ignition rod 19 (FIG. 2). Next, combustion gas is ejected from the ejection port 12 of the combustion cylinder 11, and the air ejected from the nozzle hole 22 of the air supply cylinder 21 is laterally blown and mixed with this combustion gas. The ejection amounts of combustion gas and air are appropriately adjusted by a flow rate adjusting valve (not shown) or the like.

As a result, a mixed gas having a mixing ratio necessary to generate a flame of a color suitable for viewing, for example, an orange color is generated, and this is ignited by the flame of the pilot burner 16. The flame thus generated is jetted upward from the flame discharge port 26 of the windshield 25 and is discharged to the outside through the gap between the windshield 25 and the ceiling plate 27. It can be used as it is.

[0008]

【Example】

 Next, an embodiment of the gas burner according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the structure of a gas burner according to the present invention. In this gas burner 1, a plurality of combustion cylinders 11 for ejecting combustion gas are erected. The ejection port 12 of the combustion cylinder 11 is directed upward, and the combustion gas is ejected from here. A manifold 13 is connected to the lower side of the combustion cylinder 11, and combustion gas is ejected from the nozzle 14 of the manifold 13 into the combustion cylinder 11. A combustion gas supply pipe 15 is connected to the manifold 13, through which combustion gas is supplied from the external combustion gas supply device (not shown) into the manifold 13. The combustion gas supply pipe 15 is provided with an opening / closing solenoid valve 40 for stopping the supply of combustion gas.

A part of the ejection port 12 of the combustion cylinder 11 is cut out, and the pilot burner 16 is inserted into the cutout portion. The pilot burner 16 is supported by a support frame 17 provided outside the combustion cylinder 11. Combustion gas is supplied to the pilot burner 16 through a gas pipe 18, and is constantly ignited during use of the gas burner 1. Then, when the combustion gas is supplied to the combustion cylinder 11 at a predetermined timing, the combustion gas ejected from the ejection port 12 is ignited by the flame of the pilot burner 16. An open / close solenoid valve 41 for stopping the supply of combustion gas is also attached to the gas pipe 18.

In addition to the pilot burner 16, the ignition rod 19 used for ignition of the pilot burner 16 and the temperature of the crater of the pilot burner 16 are provided in the cutout portion of the ejection port 12 of the combustion cylinder 11, as shown in FIG. The thermocouple 20 operated by is inserted. The ignition rod 19 and the thermocouple 20 are also supported by the support frame 17.

FIG. 3 is a control system of the gas burner 1, showing an ignition system and a safety measure system. In the figure, a control circuit 42 is connected to a burner controller 50 for controlling ignition timing, combustion duration, etc. of the gas burner 1, where an opening / closing solenoid valve control circuit 43, a high voltage generation circuit 44, The alarm device 45 and the flame detection circuit 46 are controlled.

In this control system, when the ignition command of the pilot burner 16 is input from the burner controller 50 to the control circuit 42, first, the solenoid valve 41 for opening and closing the gas pipe 18 is opened to convert the combustion gas into the pilot burner 16 Is supplied to. Next, a predetermined voltage is generated in the high voltage generation circuit 44, which causes the ignition rod 19 to operate and ignite the combustion gas ejected from the pilot burner 16.

Next, according to an instruction from the burner controller 50, the opening / closing solenoid valve control circuit 43 is controlled to open the opening / closing solenoid valve 40 of the combustion gas supply pipe 15. With this, the combustion gas is supplied to the combustion cylinder 11 and is ejected from the ejection port 12. Then, this combustion gas is ignited by the flame released from the pilot burner 16, and thereby an ornamental flame is generated.

After ignition of the pilot burner 16, an electromotive force is generated in the thermocouple 20 by the flame emitted therefrom, and the voltage V is output. In this example, since three thermocouples 20 are connected in series, a total voltage of 3V is generated. This voltage 3V is supplied to the flame detection circuit 46, where it is converted to a predetermined level and supplied to the control circuit 42. The opening / closing solenoid valve control circuit 43 is controlled by this control circuit 42, and the opening / closing solenoid valve 40 of the bilot burner 16 is opened by a signal from this.

Now, when the flame of the bilot burner 16 is extinguished for some reason, the temperature near the crater of the pilot burner 16 decreases, so that the voltage V output from the thermocouple 20 is interrupted. Become. This is detected by the flame detection circuit 46 and transmitted to the control circuit 42. Then, a closing signal is output from the opening / closing solenoid valve control circuit 43, whereby all the opening / closing solenoid valves 40, 41 are closed. At this time, an alarm can be issued by using an alarm device 45 such as a buzzer or a display lamp.

Therefore, even if the ornamental flame emitted from the ejection port 12 disappears, and at the same time the flame of the pilot burner 16 disappears, the combustion gas supply is completely stopped, so It is possible to prevent the gas from being released to the outside as it is. Since there are multiple combustion cylinders 11 in this gas burner 1, even if the flame emitted from one of the combustion cylinders 11 disappears during the emission of the ornamental flame, it will be ejected from there. The generated combustion gas is immediately ignited by the flame emitted from the other combustion cylinder 11, so that the voltage V output from the thermocouple 20 is not interrupted, which is further safe.

Now, as shown in FIG. 1, an air supply cylinder 21 is arranged on the side of the combustion cylinder 11. The tip of the air supply cylinder 21 is shaped like a bag, and a plurality of nozzle holes 22 are provided on the side surface thereof. The nozzle hole 22 is located slightly lower than the ejection port 12 of the combustion cylinder 11. The air supply cylinder 21 is connected to an external air generation source (not shown), from which air is supplied at a predetermined timing.

The combustion cylinder 11 and the air supply cylinder 21 are surrounded by an outer cylinder 23. The outer cylinder 23 is substantially sealed, and the opening 24 is provided only in the central portion of the upper plate 30. The opening 24 is located directly above the ejection port 12 of the combustion cylinder 11. In addition, a cylindrical windshield 25 is erected around the opening 24. Furthermore, in order to prevent water droplets from entering through the flame outlet 26 at the upper part of the windshield 25, a top plate 27 larger than the area of the flame outlet 26 is attached. Further, an outer ring 32 is provided outside the windshield plate 25 and the top plate 27, which can prevent the flame from being blown off by the wind.

The combustion cylinder 11, the pilot burner 16, the air supply cylinder 21, and the like penetrate the bottom plate 28 of the outer cylinder 23 and are drawn out to the outside, and are connected to a supply source of combustion gas or air. Further, legs 29 for fixing the entire gas burner 1 are attached to the bottom plate 28.

For the gas burner 1 having a large capacity such as the gas burner 1 installed on the top, for example, a slow ignition system is used as described below. That is, first, the combustion gas is supplied to the pilot burner 16, and the combustion gas is ignited by the ignition rod 19. Next, for example, about 30% of the original combustion gas is supplied to the combustion cylinder 11 to be ejected from the ejection port 12, and air is supplied to the air supply cylinder 21 to be ejected from the nozzle hole 22. As a result, the inside of the outer cylinder 22 is filled with air having a pressure higher than the atmospheric pressure, and this air flows out through the gap between the combustion cylinder 11 and the upper plate 30 to the outside.

The air flow in this gap is horizontal, and the air flows laterally into the combustion gas ejected upward from the ejection port 12 of the combustion cylinder 11. This ensures that the combustion gas and air are well mixed. The mixed gas thus generated is ignited by the flame emitted from the pilot burner 16. As a result, the gas burner 1 emits a flame of about 30% of the normal size.

Next, when 100% of the combustion gas is supplied to the combustion cylinder 11, a flame of the original size is generated. In this way, by using a small flame first and then a flame of the original size, even if a considerably large flame is generated from the gas burner 1, the impact generated by igniting a large amount of combustion gas at one time at the time of ignition Can be prevented. In the small-capacity gas burner 1, a flame of a predetermined size may be generated from the beginning.

The flame thus generated is blown upward from the flame discharge port 26 and is discharged to the outside through a gap with the top plate 27. In this gas burner 1, since the air is forcibly supplied and the combustion gas and the air are sufficiently mixed, it is not necessary to provide a primary air suction hole in the middle of the combustion cylinder 11. Therefore, it is possible to prevent the occurrence of flashback.

FIG. 4 shows a model 60 of a volcano using this gas burner 1, which is installed outdoors for a monument. The gas burner 1 is attached to the top and the circumference of the model 60. A gas burner 31 that discharges the flame downward is attached to the slope of the model 60. Although many gas burners 31 are actually installed, only two are shown here for the convenience of the drawings. Further, a detailed description of the gas burner 31 will be omitted.

With these gas burners 1 and 31, for example, a state in which lava flows can be expressed. First, the top gas burner 1 is ignited, then the slope gas burner 31 is ignited, and finally the surrounding gas burner 1 is ignited. Lava flows from the top through the slope to the surroundings. Will feel. Also, with this gas burner 1, it is possible to generate a flame with a color similar to that of lava by adjusting the mixing ratio of combustion gas and air, which can improve the decorative effect of the monument 60. become.

[0027]

[Effect of device]

 As described above, the present invention separately supplies combustion gas and air, generates a mixed gas by ejecting air while intersecting with the direction of ejection of combustion gas, and further generates air at the outlet of combustion gas. It is equipped with a shelter plate and a top plate for preventing water drops.

Therefore, according to the present invention, it is possible to arbitrarily change the mixing ratio of the combustion gas and the air, which makes it possible to generate a flame suitable for ornamental use such as orange color. Further, since the combustion gas and the air are mixed well, it is possible to arbitrarily change the supply amounts of the combustion gas and the air while maintaining the predetermined mixing ratio, which changes the size of the flame. It will be possible.

Further, the windshield and the top plate can prevent the flame from extinguishing even if it is exposed to wind or rain, so it is necessary to cover the flame with a transparent cover even when used outdoors. Instead, it is possible to directly see the flame generated for ornamental use, which has the effect of improving the decorativeness of monuments and the like to which the gas burner of the present invention is applied.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a gas burner according to the present invention.

FIG. 2 is a plan view of a thermocouple and an ignition rod arranged at an ejection port of a combustion cylinder.

FIG. 3 is an explanatory diagram illustrating an ignition system and a safety measure system.

FIG. 4 is an explanatory diagram illustrating an example of a monument to which the gas burner according to the present invention is applied.

[Explanation of symbols]

 1 Gas Burner 11 Combustion Cylinder 12 Jet Port 13 Manifold 14 Nozzle 15 Combustion Gas Supply Pipe 16 Pilot Burner 17 Support Frame 18 Gas Pipe 19 Ignition Rod 20 Thermocouple 21 Air Supply Cylinder 22 Nozzle Hole 23 Outer Cylinder 24 Opening 25 Windshield 26 Flame outlet 27 Top plate 28 Bottom plate 29 Leg 30 Top plate 31 Downward gas burner 32 Outer ring 40, 41 Open / close solenoid valve 42 Control circuit 43 Open / close solenoid valve control circuit 44 High voltage generation circuit 45 Alarm device 46 Flame detection circuit

Claims (1)

[Scope of utility model registration request] 1. A gas ejection means for ejecting combustion gas from an ejection port directed upward, and an air mixing means for ejecting air from a direction intersecting the ejection direction of the combustion gas to mix the air with the combustion gas. An ignition means for igniting the combustion gas ejected from the ejection port; a water droplet prevention means arranged above the ejection port for preventing a water droplet or the like falling from above from entering the gas ejection means; A gas burner, comprising: a windbreak unit arranged around a jet port.