JPH0814371B2 - Flame length adjusting device for smoking gas lighter - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a flame of a smoking gas lighter capable of always forming a constant flame length at a crater regardless of fluctuations in gas pressure in a storage tank. Regarding the length adjusting device.

(Prior Art) Conventionally, a smoking gas lighter is generally provided with a storage tank capable of storing fuel gas in a lighter casing, and the storage tank and the burner nozzle are connected via a valve means and ejected from the burner nozzle. The fuel gas is ignited by an appropriate ignition means, and a flame for igniting the cigarette is emitted from the crater of the lighter casing.

The valve means arranged on the road leading from the storage tank to the burner nozzle usually includes a flow rate adjusting means capable of adjusting the flow rate of the fuel gas, and adjusts the flame length formed at the crater to an optimum length. It is possible.

Conventionally, a generally used flow rate adjusting means has a structure for adjusting the gas flow rate by compressing or relaxing a porous member to increase or decrease the cross-sectional area of the passage through which the fuel gas flows. Therefore, when the gas in the storage tank fluctuates, it was unavoidable that the gas flow rate fluctuated and the flame length changed. As is well known, the flow rate of the fluid flowing through the passage is proportional to the effective cross-sectional area of the passage and the pressure of the fluid, so that the tank may be affected by fluctuations in the external temperature, atmospheric pressure, or the amount of gas in the tank. When the gas pressure in the inside fluctuates, the gas flow rate fluctuates unless the passage cross-sectional area is changed by the flow rate adjusting means in inverse proportion to the fluctuation.

However, in actual use, it is extremely troublesome and troublesome to operate the flow rate adjusting means at any time in response to changes in the gas pressure in the tank. Furthermore, when a porous flow rate adjusting material called a malt plate is used,
Since the gas pressure is the same as in the tank up to the position of the flow rate adjusting material when the valve is closed, there is a drawback that the phenomenon that the flame length temporarily increases during ignition cannot be avoided.

(Problem to be Solved by the Invention) The present invention can always adjust the gas flow rate introduced to the planer nozzle to a constant value even when the gas pressure in the tank changes due to various factors. The flame length that is set once can be kept constant at all times, and a flame length adjusting device for a smoking gas lighter that can eliminate the phenomenon that the flame length becomes temporarily excessive at the time of ignition is provided. It is intended to be provided.

(Means for Solving the Problem) In order to solve the above-mentioned problems, the means adopted by the present invention is an inflow passage (5) and an outflow passage in a casing (1) housed in a lighter casing of a smoking gas lighter. Defining and arranging a pressure regulating chamber (4) with a passage (6),
Moreover, a swing valve body (15) capable of opening and closing the inflow passage (5) by contacting and separating from the valve seat (10) formed in the inflow passage (5) is pivotally supported in the pressure adjusting chamber (4). A diaphragm (20), to which the gas pressure in the pressure adjusting chamber (4) is loaded on one surface and the elastic force of the pressure adjusting spring (24) is loaded on the other surface, is arranged in the pressure adjusting chamber (4). Then, the diaphragm (20) is linked to the swing valve body (15) through the diaphragm rod (18), and the pressure adjusting screw (22) for supporting the pressure adjusting spring (24) is placed outside the casing (1). The tension of the pressure adjusting spring (24) can be varied from the outside of the casing (1) by facing it, and the inflow passage (5) is connected to the fuel tank for storing the fuel gas in a liquefied state, and the outflow passage (6) is connected. An on-off valve means (13) capable of opening and closing the outflow passage (6) is provided at the outlet end of the pressure control chamber (4). Is characterized in that the other end of the outlet pipe (26) having one end opened in the existing space of the gas phase gas is connected to the inlet of the outflow passage (6).

Also, the open end of the outlet pipe (26) is always in the pressure adjusting chamber (4).
It is characterized in that it is located in the existing space of the gas phase gas inside.

Furthermore, the outlet pipe (26) is composed of a flammable pipe, and the float (27) is attached to the end of the outlet pipe (26) so that the open end of the outlet pipe (26) is always in the gas phase gas existence space in the pressure adjustment chamber (4). It is characterized by being positioned.

Furthermore, it can be operated from the outside separately from the pressure adjusting screw,
It is characterized by including means capable of temporarily increasing the tension of the pressure adjusting spring.

(Embodiment) A preferred embodiment of the present invention will be described in detail below with reference to the drawings. In the figure, (1) is a casing, which is assembled by sealing a lower casing (1a) and an upper casing (1b) with a packing (3) and connecting them with a screw (2). A pressure adjusting chamber (4) is defined in the casing (1). The pressure adjusting chamber (4) can communicate with the outside through a passage (5) formed in the lower casing (1a) on the one hand, and a passage (6) formed in the upper casing (1b) on the other hand. Can communicate with the outside. The casing (1) has a flat rectangular box shape as a whole, and is housed in a lighter casing of a smoking lighter to be combined with a fuel tank, a burner nozzle, an ignition means or the like.

The passage (5) formed in the lower casing (1a) is connected to the fuel tank to form a fuel gas inflow passage, and the passage (6) formed in the upper casing (1b) is connected to the burner nozzle. And constitutes an outflow passage for fuel gas. The gas inflow path (5) is branched in two directions on the way, and has two openings, a side opening (7) and a bottom opening (8) of the lower casing (1a), and the connection with the fuel tank. Depending on the direction, either opening (7) is used and the unused opening (8) is closed with a plug (9). A valve seat cylinder (11) having a frustoconical valve seat (10) protruding into the pressure adjusting chamber (4) is attached to the inner end of the inflow passage (5), and the outflow passage (6). An opening / closing valve means (13) including a valve body (12) capable of opening and closing the outer passage (6) is attached to the outer end of the valve, and the other end of the opening / closing valve means (13) is connected to a burner nozzle. The pipe (14) is connected.

Reference numeral (15) is a swing valve body having a substantially central portion swingably supported by a support shaft (16) and disposed in the pressure adjusting chamber (4). A valve body (1) capable of opening and closing the inflow passage (5) by contacting and separating from a valve seat (10) arranged at the open end of (5)
7) is attached, and the other end, which is narrowed, is inserted into the hole (19) of the diaphragm rod (18) and linked to the diaphragm rod (18). The diaphragm (20) is fixed to the diaphragm rod (18). The diaphragm (20) is sandwiched and held between the upper casing (1b) and the upper lid (21). The upper lid (21) has a cap nut-shaped pressure adjusting screw (2
2) is screwed so as to move back and forth in the axial direction, and the pressure adjusting screw (2
A spring receiver (23) is axially oscillatably arranged in the inside of (2), and a pressure adjusting spring is stretched between the spring receiver (23) and the diaphragm rod (18). A knob (25) is formed on the spring receiver (23) so as to extend through the pressure adjusting screw (22) to the outside.

The elastic force of the pressure adjustment spring (24) loaded via the diaphragm rod (18) on the diaphragm (20,
The gas pressure in the pressure adjusting chamber (4) is loaded, and the rocking valve body (15) is biased to the valve closing position via the diaphragm rod (18) at a position where both are balanced, and the inflow passage (5) is closed. It's closed.

When the on-off valve means (13) is opened for ignition and the fuel gas is led from the outflow passage (6) to the burner nozzle,
Since the gas pressure in the pressure adjusting chamber (4) drops, the elastic force of the pressure adjusting spring (24) causes the diaphragm rod (18).
Is pressed to swing the swing valve body (15). As a result,
Since the valve body (17) is separated from the valve seat (10) and the inflow passage (5) is opened, the fuel gas flows from the storage tank into the pressure adjusting chamber (4), and the pressure in the pressure adjusting chamber (4) is increased again. To rise. The rise of gas pressure in the pressure adjustment chamber (4) is caused by the diaphragm (20).
The diaphragm rod is lifted against the tension of the pressure adjusting spring (24) to swing the swing valve body (15) in the valve closing direction. When the gas pressure and the elastic force of the spring are balanced, the inflow passage (5) is closed again.

FIG. 1 shows a state in which the oscillating valve body (15) is in the valve opening position, and FIG. 3 shows a state in which the oscillating valve body (15) is in the valve closing position. Is guided toward the burner nozzle, the rocking valve element (1
5) actually operates in an oscillating state and oscillates between the valve closing position and the valve opening position to keep the gas pressure in the pressure adjusting chamber (4) constant.

In this way, the gas pressure in the pressure adjusting chamber (4) is kept constant, and as a result, the cross-sectional area of the passage from the pressure adjusting chamber (4) to the burner nozzle is considered to be substantially constant. The flow rate of gas ejected from the burner nozzle is constant, and the flame length can be kept constant.

When changing the set flame length, as shown in FIG. 4, the pressure adjusting screw (22) is rotated in the direction of the arrow to advance or retreat in the axial direction. As the pressure adjusting screw (22) moves back and forth, the elastic force of the pressure adjusting spring (24) fluctuates, and the diaphragm rod (18) moves up and down to fluctuate the displacement amount of the diaphragm (20). The fluctuation of the deviation amount of the diaphragm (20) means the fluctuation of the gas pressure in the pressure adjusting chamber (4) that balances with the deviation, and as a result, the pressure adjusting chamber (4) is adjusted.
By increasing or decreasing the gas pressure inside, the amount of gas flowing out to the burner nozzle is adjusted. FIG. 4 shows a case where the gas flow rate is increased and the flame length formed in the burner nozzle is adjusted to be longer. The pressure adjusting screw (22) is rotated to lower the pressure adjusting spring (2).
4) is reinforced more strongly. Since the diaphragm rod (18) is lowered by the increase in the elastic force of the pressure adjusting spring (24), the diaphragm (20) is also largely elastically displaced. Therefore, the oscillating valve body (15) is kept open to a gas thickness commensurate with the increased displacement of the diaphragm (20), and the pressure adjusting chamber (4) is adjusted and held with a larger balanced gas pressure. The flame length is adjusted to a larger state.

FIG. 5 shows a case where the knob (25) is operated to temporarily increase the flow rate of the gas led to the burner nozzle to temporarily increase the flame length. Smoking gas lighters require a long flame length so that they will not be blown out by the conditions of use, for example, when the wind is strong, or it is necessary to temporarily increase the flame length for purposes other than igniting a cigarette. However, the flame length adjusting device of the present invention can satisfy such a need.

That is, if you push the knob (25) in the direction of the arrow,
A spring receiver (23) integrated with the knob (25) slides down in the pressure adjusting screw (22) in the axial direction to press the pressure adjusting spring (24) and increase its resilience. Since the elastic force of the spring (24) raises the diaphragm rod (18) similarly to the above, the rocking valve body (15) associated therewith is rocked to open the valve, and the pressure adjusting chamber is opened. (4)
The gas pressure inside rises. Due to the increase in the gas pressure, the flow rate of the gas flowing out increases, and the flame length increases. Knob (2
Except for pressing against 5), the spring force of the pressure adjustment spring (24) causes the spring receiver (23) to rise until it abuts the pressure adjustment screw (22), and the diaphragm rod (18) and diaphragm (20) as well. Since the state returns to the initial state, the pressure inside the pressure adjusting chamber (4) returns to the gas pressure that was initially set. Therefore, the gas pressure can be temporarily increased to increase the flame length only while the knob (25) is being pushed.

In the figure, (26) is a lead-out pipe having one end connected to the inlet of the outflow passage (6), and the other end opening is positioned on the upper side of the pressure adjusting chamber (4) as shown. As a result, as shown in FIG. 6, the open end of the lead-out pipe (26) remains in the gas phase of the pressure adjustment chamber (4) even when it is installed in the lighter casing in a state rotated by 90 ° from FIG. It can be positioned on top of where the gas is present, eliminating the risk of liquid phase gas being drawn out.

7 to 9 show that the lead-out pipe (26) is formed of a flexible pipe such as a silicone rubber tube, and the lead-out pipe (26) is formed.
A float (27) is attached to the open end of the discharge pipe (26) so that the open end of the outlet pipe (26) is always located in the space where the gas phase gas exists regardless of the orientation of the pressure adjusting chamber (4). Is.

(Operation) The gas pressure in the pressure adjusting chamber and the tension of the pressure adjusting spring are applied to the diaphragm, and the inflow passage is opened and closed by the oscillating valve body linked to the diaphragm to balance the gas pressure and the spring tension. The gas pressure to be adjusted can be maintained at a constant pressure by adjusting the gas pressure in the pressure adjusting chamber. In this way, the flame amount gas adjusted to a constant pressure is guided to the burner nozzle and ignited, so that the flame length formed at the crater can be kept constant.

The tension of the pressure adjustment spring can be adjusted by advancing and retracting the pressure adjustment screw with one end of the spring stretched, and the gas pressure in the pressure adjustment chamber sufficient to operate the diaphragm also fluctuates, so the adjustment pressure is adjusted. It can be changed and the flame length can be increased or decreased.

By pushing in a knob that can be operated separately from the pressure adjusting screw, the tension of the pressure adjusting spring is temporarily increased and the rocking valve element is operated in the valve opening direction to reduce the gas pressure in the pressure adjusting chamber. Since it can be raised, the flame length can be temporarily increased while operating the knob.

Since the elongate outlet pipe is connected to the inner end of the outflow passage and the open end thereof is positioned within the gas phase gas region in the pressure adjusting chamber, the liquid gas is not led out to the burner nozzle.

(Effect of the Invention) According to the smoking gas lighter of the present invention, the fuel gas in the fuel tank is guided to the pressure adjusting chamber, where it is adjusted to a constant pressure, and then guided to the burner nozzle.
Even if the gas pressure in the fuel tank fluctuates in the temperature and atmospheric pressure range depending on the remaining amount in the tank, a flame of a constant length can be always formed at the crater.

Also, since the flame length can be increased by temporarily increasing the pressure in the pressure control chamber, the flame size is temporarily increased for strong wind or for any purpose other than ignition of the cigarette. When it is necessary, it can respond effectively.

By the outlet pipe, the vapor phase gas can be always taken out from the pressure adjusting chamber, and the liquid phase gas is not led out to the burner nozzle, so that a stable flame can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional view, FIG. 2 is an exploded perspective view, FIG. 3 is a sectional view of an essential part showing a valve closing posture, FIG. 4 is a sectional view of an essential part showing a valve opening posture, and FIG. FIG. 6 is a cross-sectional view of a main part showing a state of temporarily increasing the flame length, FIG. 6 is a cross-sectional view of the main part showing a state rotated by 90 °, and FIGS. 7 to 9 are views schematically showing a modified example. is there. (1) …… Casing, (2) …… Screw (3) …… Packing, (4) …… Pressure adjusting chamber (5) …… Passage (inflow passage), (6) …… Passage (outflow passage) ( 7) (8) …… Opening, (9) …… Plug (10) …… Valve seat, (11) …… Valve seat cylinder (12) …… Valve disc, (13) …… Opening / closing valve means (14) ...... Connecting pipe, (15) …… Swing valve body (16) …… Spindle, (17) …… Valve body (18) …… Diaphragm rod (19) …… hole, (20) …… diaphragm ( 21) …… Top cover, (22) …… Pressure adjusting screw (23) …… Spring holder, (24) …… Pressure adjusting spring (25) …… Knob, (26) …… Outlet pipe (27) …… Float

Claims (4)

[Claims] 1. A pressure regulating chamber (4) having an inflow passage (5) and an outflow passage (6) is defined in a casing (1) housed in a lighter casing of a smoking gas lighter, and the inflow is provided. The swing valve body (15) capable of opening and closing the inflow passage (5) by contacting and separating from the valve seat (10) formed in the passage (5) is provided in the pressure adjusting chamber (4).
A gas pressure inside the pressure adjusting chamber (4) is loaded on one surface and a pressure adjusting spring (24) is supported on the other surface.
A diaphragm (20) to which the elastic force of (1) is loaded is arranged in the pressure adjusting chamber (4), and the diaphragm (20) is linked to the swing valve body (15) via a diaphragm rod (18), The pressure adjusting screw (22) supporting the pressure adjusting spring (24) is exposed outside the casing (1) so that the tension of the pressure adjusting spring (24) can be changed from outside the casing (1), and the fuel gas is liquefied. The inflow passage (5) is connected to a fuel tank which is stored in, and an on-off valve means (13) capable of opening and closing the outflow passage (6) is arranged at the outlet end of the outflow passage (6), and the pressure adjusting chamber is provided. A flame length adjusting device for a smoking gas lighter, characterized in that the other end of a lead-out pipe (26) having one end opened in an existing space of a gas phase gas in (4) is connected to an inlet of an outflow passage (6). . 2. The flame length according to claim 1, wherein the open end of the outlet pipe (26) is always positioned in the space in which the gas phase gas exists in the pressure adjusting chamber (4). Adjustment device. 3. The lead-out pipe (26) is composed of a flammable pipe, a float (27) is attached to the end thereof, and the open end of the lead-out pipe (26) always has a gas phase gas in the pressure adjusting chamber (4). The flame length adjusting device according to claim (1) or (2), wherein the flame length adjusting device is arranged in a space. 4. A flame length adjusting device according to claim 1, further comprising means operable separately from the pressure adjusting screw and capable of temporarily increasing the tension of the pressure adjusting spring. apparatus.