JPH086922B2 - Lighter gas combustion device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas lighter, wind-resistant combustion device, and particularly, although not intended to be limited to this, for continuously burning gas fuel as disclosed in Japanese Utility Model Publication No. 3-45017. The invention relates to an improvement of a wind resistant combustion device using the catalyst of the above.

[0002]

2. Description of the Related Art A gas writer disclosed in Japanese Utility Model Publication No. 3-45017 supplies a mixture of air and a fuel gas to an internal space of a hollow burner cylinder (3), and the mixture is supplied in the cylinder. To burn. Since the gas burns in the cylinder and the cylinder (3) prevents the external wind from blowing off the combustion gas, it is difficult for the wind to misfire. That is, there is a first wind resistance effect. In addition to this, a catalyst wire (7) is arranged in the combustion cylinder (3), and this is red-heated by the combustion gas. Even if strong wind enters from the upper opening of the combustion tube (3) and the combustion in the tube (3) disappears temporarily,
The heated catalyst wire (7) automatically reignites the mixture around it. That is, since the catalyst wire (7) that is red-heated by the combustion gas constantly burns the air-fuel mixture around it continuously, even if there is a temporary misfire due to strong wind, it will automatically re-ignite immediately, which is a high wind resistance effect. There is a secondary wind resistance effect due to the catalyst wire (7).

[0003]

A fuel gas receiving port is provided at the lower end, a gas ejection opening is provided at the upper end projecting into the combustion cylinder (3), and an air intake is provided at an outer surface between the gas receiving port and the gas ejection opening. A mixture of fuel gas and air is supplied into the combustion tube (3) from a gas mixing pipe (5) having a port, but the gas flow sucks air at a high speed from the intake port, whereby the gas mixing pipe ( 5) supplies a relatively high-speed air-fuel mixture to the combustion cylinder (3). Therefore, the combustion gas is discharged from the combustion cylinder (3) at a high speed. However,
As the fuel gas and air are well mixed,
(3) So-called red flames do not appear inside and outside, and the combustion gas is transparent or slightly bluish and difficult to see. When the catalyst wire (7) is provided, it glows red, so it can be easily confirmed that the ignition is carried out by looking inside the combustion tube (3) from above, but from the side, it is ignited.
It's not easy to tell if (there is a flame) or not. Since the combustion gas blows out at high speed, the fact that the flame is not visible is
Brings anxiety to The. This anxiety becomes particularly strong when the catalyst wire (7) is not provided.

Cigarette lighters are often used not only outdoors in the wind, but also in indoor calm environments. When there is no wind outdoors or when it is used indoors, a red flame like a candle, which is generally used in the past, has a feeling of chilling, so it is often desired, and one writer
It is preferable to select a flame having a high wind resistance effect (combustion gas of air-fuel mixture) and a red flame having a low wind resistance effect but a good visual feeling.

An object of the present invention is to provide a gas combustion device capable of making such a selection.

[0006]

A gas combustion device for a lighter according to the present invention comprises a tubular member (2, 3) including an upper end opening (3a) and an air intake (2a) below the opening (3a). A side opening (8b) open to the side at a position slightly lower than the upper end surface, a fuel gas receiving opening (8d) at the lower end, and an air intake opening (a side opening between these openings (8b, 8d) ( 8c) and a tube member (8) projecting from below into the tubular member (2, 3); a first opening / closing means (7f) for opening and closing the air inlet (2a) of the tubular member (2, 3) ); Pipe member (8)
Second opening / closing means (7s) for opening / closing the air intake port (8c) of
It is possible to move between the first position and the second position, and at the first position, the first opening / closing means (7f) is closed and the second opening / closing means (7f).
s) is opened, the first opening / closing means (7f) is opened and the second opening / closing means (7s) is closed in the second position.
(9, 10); and ignition means (16) for igniting the fuel gas in the tubular members (2, 3).

Symbols in parentheses indicate corresponding elements in the embodiments shown in the drawings and described later.

[0008]

When the combustion mode switching means (9, 10) is placed in the first position, the air inlet of the tubular member (2, 3) is opened by the first opening / closing means (7f).
(2a) is closed, and the second opening / closing means (7s) opens the air intake port (8c) of the pipe member (8). As a result, the fuel gas supplied to the opening (8d) at the lower end of the pipe member (8) is discharged from the side opening (8d) of the pipe member (8).
Although it comes out from b) into the inner space of the tubular member (2, 3), this fuel gas flow sucks air along the flow of the fuel gas flow from the air suction port (8c), and the inside of the pipe member (8). The fuel gas flow that rises up is mixed with air to form a fuel gas / air mixture, and exits from the side opening (8b) into the inner space of the tubular member (2, 3). Ignition means (1
6) ignites the mixture in the tubular members (2, 3), so the tubular members
The air-fuel mixture burns in (2, 3) and becomes combustion gas (18cg), which exits upward from the upper end opening (3a) of the tubular member (2, 3). Cylindrical member (2,3)
Since the air-fuel mixture burns inside and the tubular members (2, 3) prevent the outside wind from blowing off the combustion gas, it is difficult for the wind to misfire. That is, there is a first wind resistance effect.

When the catalyst wire (4) is arranged in the tubular member (2, 3), the catalyst wire is red-heated by the combustion gas, and a strong wind enters from the upper end opening (3a) of the tubular member (2, 3) to cause the tubular member (2). Even if the combustion in (2,3) also disappears temporarily, the heated catalyst wire (4) automatically reignites the air-fuel mixture around it. That is, since the catalyst wire (4) that is red-heated by the combustion gas always continuously burns the air-fuel mixture around it, even if there is a temporary misfire due to strong wind, it automatically re-ignites immediately, which is a high wind resistance effect. A secondary wind resistance effect due to the catalyst wire (4) can be obtained.

When the combustion mode switching means (9, 10) is placed in the second position, the first opening / closing means (7f) causes the air inlet (2) of the tubular member (2, 3).
a) is opened, and the air inlet (8c) of the pipe member (8) is closed by the second opening / closing means (7s). As a result, the fuel gas supplied to the opening (8d) at the lower end of the pipe member (8) exits from the side surface opening (8b) of the pipe member (8) into the inner space of the tubular member (2, 3). Air inlet
Since (8c) is closed, the side opening (8b) of the pipe member (8)
The fuel gas is substantially free of air until it exits. On the other hand, since the air intake (2a) of the tubular member (2, 3) is open,
Through which air enters the tubular members (2, 3) and mixes with the fuel gas exiting from the side opening (8b) of the tubular member (8), but the tubular member (8)
The fuel gas concentration is higher and the air concentration is lower at a position closer to the center line passing through the center of the side opening (8b). On the contrary, the farther from the center line, the lower the fuel gas concentration and the higher the air concentration. The ignition means (16) ignites the air-fuel mixture in the tubular members (2, 3), but this ignition occurs at a position slightly distant from the center line of the pipe member (8) and where the fuel gas concentration is relatively low. Occur. Due to this ignition, the flame rises from the tubular member (2, 3), but the air concentration is lower as it is closer to the center line of the pipe member (8), so the flame is a red outside like a candle or a match flame. It presents a flame. In this way, the flame, so-called ordinary red flame, can be seen, so that the user can easily recognize the ignition. When there is no wind outdoors or indoors, this red flame gives the user a feeling of tranquility.

As described above, according to the present invention, the flame of the writer can be selected by placing the combustion mode switching means (9, 10) in the first position or the second position. In other words, windproof mode
Mode and natural flame mode can be selected.

Other objects and features of the present invention will become apparent from the following description of embodiments with reference to the drawings.

[0013]

FIG. 1 shows an embodiment of the present invention. The support cylinder 2 is fixed to the cylinder support member 1 by crimping. The ceramic cylinder 3 is inserted into the support cylinder 2, the support ring 5 to which the catalyst wire 4 is fixed is placed on the upper end surface of the cylinder 3, and the ring-shaped nut 6 is screwed to the male screw on the side peripheral surface of the support cylinder 2. By doing so, the nut 6 holds down the ring 5. As a result, the support cylinder 2, the ceramic cylinder 3, the support ring 5, and the press nut 6 are integrated.

At the center of the support tube 2, a mixing tube 8 penetrating the flame switching tube 7 is fixed. The flame switching cylinder 7 is a mixing tube 8
It can slide up and down with respect to the flame switching cylinder 7
It is driven upward by a compression coil spring 9 via a flame switching lever 10 fixed to the. The diameter of the upper end opening 7a of the flame switching cylinder 7 is slightly larger than the outer diameter of the tip rod portion of the mixing tube 8 so that gas can flow vertically therethrough. The flame switching cylinder 7 has a diverting opening 7b at a substantially middle portion in the vertical direction, and an outer flange 7f for closing the lower opening 2a of the supporting cylinder 2 is provided below the diverting opening 7b. Below the outer flange 7f of the flame switching cylinder 7, there is a sleeve 7s in which the mixing pipe 8 fits perfectly.

The mixing tube 8 has a side opening 8b,
There is an air intake port 8c and a lower opening 8d. Lower opening 8d
Has a filter 11 and a tube connecting cylinder, and the upper end of a synthetic resin tube 12 having high elasticity is connected thereto.
The lower end of the tube 12 is connected to the tip of a fuel nozzle 13 which is a part of a fuel gas opening / closing mechanism of a fuel tank (not shown). A gas release lever 14 is coupled to the fuel nozzle 13. The gas release lever 14 is rotationally driven in the counterclockwise direction, so that the fuel nozzle 13 is pulled up and gas is discharged from the fuel nozzle 13. Stream 18g flows through the synthetic resin tube 12 to the mixing tube 8.

The tip of a high pressure lead 16 of a piezo (piezoelectric element) ignition device (not shown) is fixed to the ceramic cylinder 3. The ground electrode of the ignition device is electrically connected to the mixing tube 8 via a conductor (not shown) and a lower support ring to which the mixing tube 8 is fixed in the figure.
This is an electrical connection due to mechanical contact, and even if there is a place of poor contact, the high voltage discharge will cause a substantial current loss.
Is formed. That is, when a piezo ignition device (not shown) generates a high pressure, the high pressure is generated by the tip of the mixing tube 8 and the lead 1.
6 and the electric spark 17 is generated between the two, and the fuel around it is ignited.

1. Wind resistance mode (FIG. 1) When the flame switching lever 10 is in the first position shown in FIG. 1, that is, the force of the compression coil spring 9 causes the flame switching lever 10 to move.
Is pushed up, the outer flange 7 of the flame switching cylinder 7
f comes into contact with the lower end surface of the support cylinder 2, and the lower opening 2a of the support cylinder 2
Is closed. The diversion opening 7b of the flame switching cylinder 7 substantially faces the side opening 8b of the mixing pipe 8, and the lower sleeve 7s of the flame switching cylinder 7 is provided.
Is located above the air intake port 8c of the mixing tube 8 and the air intake port 8c is open.

In this state, when the gas release lever 14 is driven to rotate counterclockwise and the fuel nozzle 13 is pulled up (the gas release valve of the fuel tank is opened), the fuel gas of the fuel tank is synthesized from the fuel nozzle 13. It flows through the resin tube 12 into the mixing tube 8 (gas flow 18 g), and the side opening 8 of the mixing tube 8
b and the upper end opening 7a and the flow dividing opening 7b of the flame switching cylinder 7
Through to the inner space of the ceramic cylinder 3. Air is sucked through the air suction port 8c by the gas flow 18g of the mixing pipe 8 in the direction in which the gas flow 18g flows (air flow 18a), and the sucked air moves upward while being mixed with the gas (mixed air flow). Most of this mixed airflow exits into the ceramic cylinder 3 through the diversion opening 7b (main air-fuel mixture 18ag1). Mixing tube 8
A part of the mixed air flow of (1) passes through the gap between the edge of the upper end opening 7a of the flame switching cylinder 7 and the side peripheral surface of the upper end rod-shaped portion of the mixing tube 8 into the ceramic cylinder 3 (mixed gas gentle flow 18ag2). The air-fuel mixture main flow 18ag1 has a high flow velocity, but the air-fuel mixture gentle flow 18ag2 is for increasing the certainty of ignition and has a very low flow velocity.

When a piezoelectric ignition device (not shown) generates a high voltage to generate an electric spark 17 at the upper end of the mixing tube 8 and the tip of the lead 16, a spark on the path of the spark 17 or around it. The air-fuel mixture is ignited when the air-fuel mixture ratio is suitable for ignition. Since the main flow rate of the air-fuel mixture 18ag1 has a high flow rate, the ignited combustion nuclei may be extinguished by being cooled or blown off by the gas flow before being sufficiently spread, so that the ignition may fail. On the other hand, since the mixture air gentle flow 18ag2 has a very low flow velocity, the combustion nuclei generated there spread and become combustion gas, which is the mixture air mainstream 1
Ignite 8ag1. That is, the mixture gentle flow 18ag2
When formed, the probability of ignition failure is lower than it would be without it.

When the air-fuel mixture is ignited, the inner space of the ceramic cylinder 3 becomes combustion gas, which red heats the catalyst wire 4 and exits from the upper end opening 3a at high speed. The combustion gas is transparent or slightly bluish and ignites when the tip of the cigarette is brought close to above the opening of the holding nut 6. Since the holding nut 6, the ceramic cylinder 3 and the support cylinder 2 prevent the external wind from blowing off the combustion gas, the combustion gas is unlikely to misfire with respect to the wind. That is, there is a first wind resistance effect. In addition to this, since the catalyst wire 4 is red-heated by the combustion gas, even if a strong wind enters from the upper opening of the holding nut 6 and the combustion in the ceramic cylinder 3 is temporarily extinguished, the catalyst wire 4 that is still heated. This automatically reignites the air-fuel mixture around it. That is, since the catalyst wire 4 that is red-heated by the combustion gas always continuously burns the air-fuel mixture around it, even if a temporary misfire due to a strong wind causes immediate re-ignition, a high wind resistance effect, that is, the catalyst wire. There is a secondary wind resistance effect of 4.

2. Natural flame mode (Fig. 2) When the flame switching lever 10 is pushed down against the force of the compression coil spring 9 to the second position shown in Fig. 2, the outer flange 7f of the flame switching cylinder 7 is supported by the supporting cylinder. 2, the lower opening 2a of the support cylinder 2 is opened by retreating downward from the lower end surface of the support tube 2, the diversion opening 7b of the flame switching cylinder 7 is moved below the side opening 8b of the mixing tube 8, and the inner surface of the flame switching cylinder 7 is zero. Since it contacts the ring 15 and compresses it, the flow passage between the side opening 8b of the mixing tube 8 and the flow dividing opening 7b of the flame switching cylinder 7 is blocked, and the lower sleeve 7s of the flame switching cylinder 7 is closed. The air inlet 8c of the mixing tube 8 is closed.

In this state, when the gas release lever 14 is rotationally driven counterclockwise and the fuel nozzle 13 is pulled up (the gas release valve of the fuel tank is opened), the fuel gas of the fuel tank is synthesized from the fuel nozzle 13. It flows through the resin tube 12 into the mixing tube 8 (gas flow 18 g), and the side opening 8 of the mixing tube 8
The ceramic cylinder 3 is discharged from b to the space between the mixing pipe 8 and the flame switching cylinder 7, and passes through the space between the edge of the upper end opening 7a of the flame switching cylinder 7 and the peripheral surface of the upper end portion of the mixing pipe 8. Exit inside (fuel gas flow 18 g). Since the air inlet port 8c of the mixing tube 8 is closed, substantially no air is mixed in the gas flow 18g. This fuel gas flow 18g sucks air from the lower opening 2a of the support cylinder 2, and the air flow 18a flows into the ceramic cylinder 3. 18 g of fuel gas flowing upward from around the mixing pipe 8
Since the airflow 18a flows in so as to wrap the air from below,
In the inner space of the ceramic cylinder 3, the fuel gas concentration is higher and the air concentration is lower as it is closer to the central axis. Conversely, high pressure
The fuel gas concentration is lower and the air concentration is higher as it is closer to the tip surface of the door 16.

When a piezoelectric ignition device (not shown) generates a high voltage and thereby an electric spark 17 is generated at the upper end of the mixing tube 8 and the tip of the lead 16, the spark on the path of the spark 17 or around it. The air-fuel mixture is ignited when the air-fuel mixture ratio is suitable for ignition.

In this way, the flame rises from the ceramic cylinder 3, but like the flames of candles and matches, the fuel gas concentration is high at the center, so the center is oxygen deficient (internal flame),
Outer flame 18cf is red at the outer peripheral portion and the upper portion where the oxygen concentration is high. That is, a natural flame with a pale inner flame inside and a red flame outside the bottom rises from the ceramic cylinder 3. When the tip of the cigarette is brought close to this flame, it catches fire.

As is well known, this flame is easily extinguished by the wind, but the user can easily see the ignition.
When there is no wind outdoors or indoors, this red flame gives the user a feeling of tranquility.

[0026]

As described above, according to the present invention, the combustion mode
Depending on whether the switching means (9, 10) is placed in the first position or the second position, a flame (combustion gas) that is strong against wind and a red natural flame that is easily visible can be selected. That is, the wind resistant mode and the natural flame mode can be selected.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an embodiment of the present invention, showing a state in which a flame switching cylinder 7 is placed at a first position where a flame that is strong and transparent to wind is obtained.

FIG. 2 is a vertical cross-sectional view showing an embodiment of the present invention, showing a state in which the flame switching cylinder 7 is placed at a second position for obtaining a red natural flame that is easily visible.

[Explanation of symbols]

1: Cylinder support member 2: Support cylinder 2a: Lower opening 3: Ceramic cylinder 3a: Upper end opening 4: Catalyst wire 5: Support ring 6: Holding nut 7: Flame switching cylinder 7a: Upper end opening 7b: Dividing opening 7f: Outer flange 7s: Lower sleeve 8: Mixing tube 8b: Side opening 8c: Air inlet 8d: Lower opening 9: Compression coil spring 10: Flame switching lever 11: Filter 12: Synthetic resin tube 13: Fuel nozzle 14: Gas release lever 15: O-ring 16: Spark Shield 17: Discharge spark 18a: Air flow 18g: Fuel gas flow 18ag1: Mixture main flow 18ag2: Mixture auxiliary flow 18ag3: Mixture slow flow 18cg: Combustion Gas flow 18g1: Fuel gas main flow 18g2: Fuel gas slow flow 18cf: External flame

Claims (4)

[Claims] 1. A tubular member (2, 3) including an upper end opening (3a) and an air intake port (2a) below the opening (3a); a side opening (a side opening opened slightly below the upper end surface). 8b), a fuel gas receiving opening (8d) at the lower end, and an air suction port (8c) opened on the side surface between these openings (8b, 8d), and is located inside the tubular member (2, 3). A pipe member (8) protruding from the first opening / closing means (7f) for opening and closing the air intake port (2a) of the tubular member (2, 3); opening and closing the air intake port (8c) of the pipe member (8) A second opening / closing means (7s) for moving the first position and the second opening / closing means (7f) that can move between the first position and the second position.
s) is opened, the first opening / closing means (7f) is opened and the second opening / closing means (7s) is closed in the second position.
(9,10); and ignition means (1) for igniting the fuel gas in the tubular member (2,3)
6); A lighter gas combustion device comprising: 2. A tubular member (2,3) having an upper end opening (3a) and a lower opening (2a); an inner space of the tubular member (2,3) from the lower opening (2a) of the tubular member (2,3). A cylindrical body projecting to the outside, an outer flange (7f) below the upper opening (7a) of the cylindrical body for closing the lower opening (2a) of the cylindrical member (2, 3),
And the lower sleeve (7) below the outer flange (7f).
s), and the outer flange (7f) has the lower opening (2a) of the tubular member (2, 3).
A hollow combustion mode setting member (7) that can be moved to a first position for closing the cylinder and a second position for opening the lower opening (2a) of the tubular member (2, 3); Combustion mode setting member (7) The side surface of the combustion mode setting member (7), which penetrates the inner space of the cylinder from the bottom to the top and protrudes from below into the inside of the tubular member (2, 3), and which is below the upper end surface and opens to the side surface at the position inside the combustion mode setting member (7). The combustion mode setting member (7), which has the opening (8b) and the fuel gas receiving opening (8d) at the lower end and which is opened to the side surface between these openings (8b, 8d), is at the second position. Underneath
A tube member (8) having an air intake port (8c) which is closed by the rib (7s) and opened when in the first position; the combustion mode setting member (7) from the first position to the second position, Inversely, the combustion mode switching means (9, 10) for driving the motor;
And the ignition means (1) for igniting the fuel gas in the tubular members (2, 3)
6); A lighter gas combustion device comprising: 3. The upper end opening (7a) of the combustion mode setting member (7).
Is a side opening between the edge and the peripheral surface of the upper end of the pipe member (8).
The gas combustor for a lighter according to claim 2, wherein a void portion for letting out gas flowing out from (8b) has a diameter larger than a peripheral surface of an upper end side of the pipe member (8). 4. The combustion mode setting member (7) further includes a gas, which is discharged from a side opening (8b) of the pipe member (8) when the combustion mode setting member (7) is in the first position. 4. The gas combustor for a lighter according to claim 3, wherein the gas combustor has a branch opening (7b) extending outside the outer peripheral surface of the.