JP2023180177A - burner - Google Patents

Abstract

To provide a burner which enables use of different types of fuel gases.SOLUTION: A burner body 3 includes: a first gas storage chamber A arranged on an upstream side in a supply direction of a fuel gas, and communicated with fuel gas supply means 1; a second gas storage chamber B provided on a downstream side of the first gas storage chamber A; an ignition chamber C provided on a downstream side of the second gas storage chamber B and communicated with a flame cylinder 2; a first gas flow passage 4 for communicating the first gas storage chamber A with the second gas storage chamber B; a second gas flow passage 5 for communicating the second gas storage chamber B with the ignition chamber C; a third gas flow passage 6 having a flow passage area larger than that of the second gas flow passage 5; a main opening/closing valve 7 for opening/closing the first gas flow passage 4; a pilot flame opening/closing valve 8 for opening/closing the second gas flow passage 5; and a firepower adjusting valve 9 for adjusting an opening degree of the third gas flow passage 6. In the vicinity of the ignition chamber C, ignition means 10 is provided, and between the ignition chamber C and the flame cylinder 2, air supply means 11 is provided for adjusting a supply amount of combustion air.SELECTED DRAWING: Figure 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to burners, and in particular to burners that allow the use of different fuel gases.

BACKGROUND ART Conventionally, a technique disclosed in Patent Document 1, for example, has been proposed as a burner.

This technology has a configuration in which a fuel gas supply means is connected to one end of the burner main body, and a flame tube that spews out a flame is connected to the other end of the burner body, and the fuel gas supplied from the fuel gas supply means is ignited. The flame is then ejected from a flame tube.

Japanese Patent Application Publication No. 2002-71110

On the other hand, in order to ignite the fuel gas, maintain a stable pilot flame, and maintain a good flame, the mixing ratio of the fuel gas and combustion air, that is, the air twist ratio, is adjusted depending on the type of fuel gas. It is necessary to maintain it properly.

Therefore, in the conventional burner, there remains a problem that the usable fuel gas is limited by its structure, which should be improved.

The present invention has been made in view of the problems remaining in the conventional technology, and an object to be solved is to provide a burner that can use different types of fuel gas.

In order to solve the above-mentioned problems, the burner of the present invention includes a burner body equipped with a fuel gas supply means at one end and a flame tube at the other end. a first gas storage chamber arranged on the upstream side in the supply direction and communicated with the fuel gas supply means; a second gas storage chamber provided on the downstream side of the first gas storage chamber; and the second gas storage chamber. an ignition chamber provided on the downstream side of the chamber and communicating with the flame tube; a first gas passage communicating with the first gas storage chamber and the second gas storage chamber; a second gas flow path communicating with the ignition chamber, a third gas flow path having a larger flow area than the second gas flow path, and a main opening/closing valve that opens and closes the first gas flow path; A pilot opening/closing valve that opens and closes the second gas flow path and a fire power adjustment valve that adjusts the degree of opening of the third gas flow path are provided, and an ignition means is provided near the ignition chamber, and the ignition chamber and The present invention is characterized in that an air supply means for adjusting the amount of combustion air supplied is provided between the flame tube and the flame tube.

The burner of the present invention configured as described above can be used by connecting the fuel gas supply means to the burner body with all the valves, including the main on-off valve, pilot fire on-off valve, and thermal power adjustment valve, closed. is set to

From this state, fuel gas is supplied to the first gas storage chamber by opening the main on-off valve and opening the first gas flow path.

Next, by opening the pilot fire on/off valve, the pilot fire on/off valve is opened to continuously supply a small amount of fuel gas from the first gas storage chamber to the flame tube.

Combustion air is sucked into the ignition chamber or flame tube from the air supply means by the flow of fuel gas inside the ignition chamber or flame tube. Gas is produced.

In this state, a pilot flame is generated by igniting the mixed gas in the ignition chamber or flame cylinder.

From this, when the adjusted amount of fuel gas is supplied into the ignition chamber and the flame cylinder by opening the thermal power adjustment valve and adjusting the opening degree of the third gas flow path, the amount of fuel gas supplied is A corresponding flame is ejected from the tip of the flame tube, and it is ready for use.

If the ignitability of the pilot flame or the condition of the ejected flame are not favorable, the above-described problems can be solved by operating the air supply means to adjust the amount of incoming air.

As mentioned above, the air twist ratio can be adjusted, so even if the fuel gas used is changed, the air twist ratio can be adjusted to suit each fuel gas, so it can be used with many types of fuel. Allows the use of gas.

For example, it can be used in situations where propane gas is used and cassette cylinder gas must be used.

It is known that when using propane gas and when using cassette cylinder gas, the air twist ratio regions suitable for these fuel gases overlap, and in this case, the air supply means is By adjusting and maintaining the position where the air twist ratio regions suitable for the gases overlap, it is possible to omit adjustment of the air supply means when replacing both fuel gases.

The air supply means is fitted into a cylindrical base cylinder having a large number of air supply holes formed in the outer circumferential wall thereof, and is slidably fitted onto the outer periphery of the base cylinder, and is slidable in the length direction of the base cylinder. , and an adjustment ring that adjusts the aperture of the air supply hole.

With this configuration, the air supply amount can be adjusted by a simple operation such as sliding the adjustment ring along the base cylinder, and the configuration for air supply can be simplified. .

The ignition means may be configured using a piezoelectric element whose discharge terminal is exposed within the ignition chamber.

In this way, according to the burner of the present invention, the types of fuel gas that can be used can be diversified and its versatility can be increased.

FIG. 1 is a partial vertical sectional view showing an embodiment of the present invention. FIG. 1 is a partial vertical sectional view showing an embodiment of the present invention. FIG. 1 is a partial vertical sectional view showing an embodiment of the present invention.

Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.
In these figures, symbol Z indicates a burner according to the present embodiment, and this burner Z has a burner main body 3 equipped with a fuel gas supply means 1 at one end and a flame tube 2 at the other end. The burner main body 3 includes a first gas storage chamber A arranged on the upstream side in the fuel gas supply direction and communicated with the fuel gas supply means 1, and a first gas storage chamber A provided on the downstream side of the first gas storage chamber A. a second gas storage chamber B, an ignition chamber C provided on the downstream side of the second gas storage chamber B and communicated with the flame tube 2, a first gas storage chamber A and a second gas storage chamber B. A first gas flow path 4 that communicates with the second gas flow path 5 that communicates with the second gas storage chamber B and the ignition chamber C, and a third gas flow path that has a larger flow area than the second gas flow path 5. Adjust the opening degrees of the gas flow path 6, the main on-off valve 7 that opens and closes the first gas flow path 4, the pilot on-off valve 8 that opens and closes the second gas flow path 5, and the third gas flow path 6. An ignition means 10 is provided near the ignition chamber C, and an air supply means 11 is provided between the ignition chamber C and the flame tube 2 for adjusting the amount of combustion air supplied. .

The main on-off valve 7, the pilot fire on-off valve 8, and the thermal power adjustment valve 9 each use a needle valve, and the main on-off valve 7 and the pilot fire on-off valve 8 are screwed onto the burner body 3 and are Opening and closing operations are performed by forward and reverse rotation of the

The thermal power adjustment valve 9 is slidably attached to the burner body 3 and is normally biased in the closing direction by a return spring 12 interposed between the burner body 3 and the burner body 3 .

Further, a part of the fire power adjustment valve 9 is exposed to the outside of the burner main body 3, and the fire power adjustment valve 9 is moved in the opening direction against the biasing force of the return spring 12 at this exposed part. A sliding fire power adjustment lever 13 is connected.

The air supply means 11 includes a cylindrical base cylinder 14 in which a large number of air supply holes 14a are formed in the outer peripheral wall, and is slidably fitted onto the outer periphery of the base cylinder 14, and extends in the longitudinal direction of the base cylinder 14. and an adjustment ring 15 that adjusts the numerical aperture of the air supply hole 14a by sliding.

Furthermore, in this embodiment, the ignition means 10 is configured using a piezoelectric element (not shown) whose discharge terminal (not shown) is exposed in the ignition chamber C, and is attached to the burner body 3 to discharge The device includes a base body 16 in which a terminal and a piezoelectric element are incorporated, and an operation button 17 for operating the piezoelectric element.

Next, the operation of the burner Z of the present invention will be explained.
In use, the fuel gas supply means 1 is connected to the burner body 3 with the main on-off valve 7, the pilot fire on-off valve 8, and the thermal power adjustment valve 9 all closed.

From this state, as shown by arrows a and b in FIG. 5, fuel gas is continuously supplied to the ignition chamber C via the first gas storage chamber A and the second gas storage chamber B.

Here, combustion air is sucked into the ignition chamber C from the air supply means 11 by the flow of fuel gas inside the ignition chamber C, whereby a gas mixture of fuel gas and combustion air is generated in the ignition chamber C. .

In this state, by pressing down the operation button 17 of the ignition means 10, a discharge is generated in the discharge terminal of the piezoelectric element located in the ignition chamber C, and the mixed gas in the ignition chamber C is ignited. Light a pilot fire.

From this, by opening the heating power adjusting lever 13 as shown by arrow C in FIG. , supplies a regulated amount of fuel gas to the ignition chamber C.

When the adjusted fuel gas is supplied to the ignition chamber C, the adjusted fuel gas is ignited by the pilot flame to form a flame, and is ejected from the tip of the flame tube 2 to be ready for use. Ru.

If the ignitability of the pilot flame or the ejected flame are not in a favorable condition, the above-described problem can be solved by operating the air supply means 11 to adjust the amount of combustion air.

The amount of combustion air can be adjusted in this way by sliding the adjustment ring 15 of the air supply means 11 in the length direction of the base cylinder 14, as shown by arrow D in FIG. This can be done by adjusting.

Since the air twist ratio can be adjusted in this way, even if the fuel gas used is changed, the air twist ratio can be adjusted to suit each fuel gas. enable the use of

For example, it is possible to cope with situations where two types of fuel gas, propane gas and cassette cylinder gas, which are frequently used, must be used.

When propane gas and cassette cylinder gas are selected for use, it is assumed that air twist ratio regions suitable for these fuel gases overlap.

In this case, by adjusting and holding the air supply means 11 at a position where the above-mentioned air twist ratio regions suitable for both fuel gases overlap, the adjustment of the air supply means 11 when replacing both fuel gases is facilitated. Can be omitted.

Note that the above-described embodiment is just an example, and various changes can be made based on the combination of fuel gases used, design requirements, etc.

1 Fuel gas supply means 2 Flame cylinder 3 Burner main body 4 First gas flow path 5 Second gas flow path 6 Third gas flow path 7 Main on-off valve 8 Pilot fire on-off valve 9 Thermal power adjustment valve 10 Ignition means 11 Air supply means 12 Return spring 13 Firepower adjustment lever 14 Base tube 14a Air supply hole 15 Adjustment ring 16 Base 17 Operation button A First gas storage chamber B Second gas storage chamber C Ignition chamber Z Burner

Claims (3)

A burner body is provided with a fuel gas supply means attached to one end and a flame tube provided at the other end. A first gas storage chamber communicated with each other, a second gas storage chamber provided on the downstream side of the first gas storage chamber, and an ignition provided on the downstream side of the second gas storage chamber and communicated with the flame tube. a first gas flow path that communicates with the first gas storage chamber and the second gas storage chamber; a second gas flow path that communicates the second gas storage chamber with the ignition chamber; a third gas flow path having a larger flow area than the second gas flow path; a main on-off valve that opens and closes the first gas flow path; and a pilot on-off valve that opens and closes the second gas flow path. , comprising a fire power adjustment valve that adjusts the degree of opening of the third gas flow path, an ignition means provided near the ignition chamber, and adjusts the amount of combustion air supplied between the ignition chamber and the flame tube. A burner characterized in that it is provided with an air supply means. The air supply means is slidably fitted to a cylindrical base cylinder in which a number of air supply holes are formed in the outer peripheral wall of the base cylinder, and the air supply means is slidably fitted on the outer periphery of the base cylinder, and is moved by sliding in the length direction of the base cylinder. , and an adjustment ring that adjusts the aperture of the air supply hole. 2. The burner according to claim 1, wherein the ignition means is constructed using a piezoelectric element whose discharge terminal is exposed within the ignition chamber.