Lighter

Abstract

Provided is an igniter facilitating visual recognition of a flame.　Provided is a lighter capable of igniting ejected fuel to form a flame, the lighter characterized by comprising an ejection hole from which fuel is ejected, a pipe through which the fuel ejected from the ejection hole flows, an air hole provided in the pipe so as to supply air into the pipe, an ignition device that ignites the fuel, and a visualization member capable of coming into contact with the flame formed out of a flame port of the pipe along a flow direction of the fuel ignited by the ignition device, wherein the visualization member includes an opening through which at least a part of the formed flame can advance in a traveling direction thereof, and, furthermore, the visualization member is heated by the flame and is exposed so as to be capable of coming into contact with a target object to be ignited by the lighter.

Description

Lighter

[0001] The present invention relates to a lighter including an igniter including a gas igniter (including a lighter), a gas lighter, a burner including an ignition burner and a lighter burner, a torch including an ignition torch and a lighter torch, etc., and particularly to a lighter that burns fuel gas ejected from an ejection hole to form a flame.

[0002] Conventionally, in lighters such as gas igniters and gas lighters, fuel gas ejected from an ejection hole including a nozzle is ignited to generate a flame, and the flame is brought into direct or indirect contact with or close to an object (for example, a cigarette, a stove, a candle, etc.) to ignite the object. In such a case, generally, if the flame is large, it is considered preferable because it is easy to direct the flame at the object. Such ignition or lighting actions have been performed in various fields in recent years, not limited to cigarettes, stoves, and candles.

[0003] When generating a flame using a flammable gas such as a gas igniter, high combustion efficiency is often desired. In such a flame, sufficient air may be taken in to increase the temperature of the flame. For the purpose of ignition or lighting, a high temperature can be said to be efficient. On the other hand, in reality, there may be ignition that does not require such a high temperature.

[0004] Also, when aiming for high combustion efficiency, the combustion of gas mixed with air is preferable and can be completely burned. The flame at that time becomes a blue color close to colorless, and it is difficult to see the flame in bright places such as during the day, and there may be inconvenience due to the inability to grasp the spread of the flame. In such a case, for example, it has been proposed to install a flame color member having a flame color material that exhibits a flame color reaction to color the flame (for example, Patent Document 1). Also, it has been proposed to arrange a net inside the combustion cylinder and make it turn red by heating with fuel gas to make it visible (for example, Patent Document 2). However, the flame extends beyond this net and further outside the combustion cylinder to ignite an object such as a cigarette. Even if it turns red, it is difficult to visually recognize the spread of the flame extending beyond it.

[0005] Furthermore, strong crosswinds can extinguish the flame that has been ignited. In such cases, a windbreak component can be installed to prevent the flame from being extinguished (for example, Patent Document 3). Alternatively, the fuel gas is burned only within the combustion chamber, so that the flame does not extend far outside the combustion chamber. However, this simply restricts the flow rate of the fuel gas and is not necessarily resistant to crosswinds.

[0006] Furthermore, a lighter has been proposed (Patent Document 4) that has a wire mesh cover attached to the flame, which is heated to red-hot by the lighter's flame, with the aim of providing a lighter that can be used in windy conditions and creating a flame similar to charcoal to improve the taste of cigarettes. However, the application for Patent Document 4 was amended by the applicant to include "a wire mesh cover containing a catalyst fixed inside the windbreak attached to the flame." Since the effect of the amendment is retroactive to the time of filing, the applicant themselves acknowledges that the invention does not hold true in the original embodiment. In fact, the inventors of this application prototyped a lighter like the one shown in Figure 1 of Patent Document 4 before the amendment and attempted to ignite it, but were unable to ignite it. In other words, it can be said that it was a failed invention. That is, they were unable to create a lighter that could be used in windy conditions and that produced a flame similar to charcoal.

[0007] Japanese Patent Publication No. Hei 8-334227, Japanese Patent Publication No. Sho 63-91431, Utility Model Registration No. 3101328, Japanese Utility Model Publication No. Sho 63-30757

[0008] In certain fields, it is sometimes desirable to produce a flame of a convenient size. It is also sometimes desirable to have a lighter that does not require excessively high temperatures. Furthermore, it is sometimes desirable to have a lighter whose flame size is easily visible. And, it is sometimes desirable to produce a flame that is difficult to extinguish without the need for a windbreak. A lighter that satisfies at least one of these and other requirements is desirable.

[0009] The inventors, through diligent research into the flames of typical lighters, have invented a new lighter based on the characteristics of its flame and its ignition properties. For example, the flame of the gas burner shown in Figure 9A consists mainly of an inner flame emanating from the burner's nozzle and an outer flame surrounding it. The inner flame is a bright blue to blue-green flame, fixed in a conical shape, and is thought to be around 300°C to 500°C. The inner flame contains hydrogen and other substances and has a reducing effect, so it is also called a reducing flame. The outer flame is a weak blue-violet color, with a temperature of 1500°C to 1800°C, and is called an oxidizing flame. Here, it reacts with air diffused from the surroundings to form a flame. Due to this formation process, it is also called a diffusion flame. Despite its high temperature, this outer flame is pale in color, and its outer edge is difficult to see with the naked eye in bright light. Therefore, it is difficult to determine the location of the high-temperature area.

[0010] Figures 5 to 8 show schematic diagrams of flames from lighters such as gas burners. Figure 5 schematically shows the flame of what is called a normal lighter. It depicts the combustion of gas emitted from the nozzle while taking in oxygen from the air. The flame is red, which is a red flame due to incomplete combustion and is susceptible to wind. Because it is colored, the outer edge of the flame is relatively easy to see. Figure 6 schematically depicts the flame from a Bunsen burner, etc. The gas emitted from the nozzle comes into contact with primary air from the air vent, and the gas and a certain amount of air are pre-mixed in the mixing tube. When this mixed gas is emitted from the nozzle and combusts, it burns while taking in oxygen from the surrounding air (secondary air). Therefore, it forms a blue flame that is close to complete combustion, but as mentioned above, the color is faint and the outer edge of the flame is not easy to see. It is also susceptible to wind. Here, generally speaking, the length of the flame is almost proportional to the flow velocity and is also determined by the flow rate of the fuel gas, so as the jet velocity increases, the height of the flame increases.

[0011] Figure 7 schematically shows the flame of a turbo lighter. Here, the gas flow rate is adjusted, and the gas, which is completely mixed with the air (oxygen) necessary for combustion, is burned in the combustion tube (mixing tube). The flame is blue, but since it hardly extends outside the combustion tube, it is resistant to wind, and the outer edge of the flame is inside the combustion tube, making it easy to see. However, the only suitable position for ignition is the opening at the top of the combustion tube. Figure 8 is a schematic diagram of the flame of a catalytic lighter. The gas flow rate is adjusted, and the gas, which is completely mixed with the air (oxygen) necessary for combustion, is burned in the combustion tube (mixing tube). The flame is blue, but since it hardly extends outside the combustion tube, it is resistant to wind, and the outer edge of the flame is inside the combustion tube, making it easy to see. Also, even if the flame is extinguished by wind or other factors due to the high temperature of the catalyst, it can be automatically reignited. Therefore, it can be said to be particularly resistant to wind. However, the only suitable position for ignition is the opening at the top of the combustion tube.

[0012] Thus, complete combustion of gas tends to improve efficiency and increase temperature, but the outer edge of the flame becomes less visible. Furthermore, the size and shape of the flame can be adjusted by the gas supply rate, air supply rate, burner head (or nozzle) shape, and type of gas. For example, a high gas supply rate (gas flow rate per unit time) tends to result in a larger (longer) flame, and the shape and color of the flame are greatly influenced by the oxygen supply rate (air flow rate per unit time) required for combustion. For example, a high air supply produces a thin, blue flame (close to complete combustion), while a low air supply produces a yellow, fluffy flame (incomplete combustion). This is because, with a low air supply, gas combustion is carried out by air diffused from the outer edge of the flame (since diffusion is from the periphery, the air flows in a direction toward the center of the flame). Here, the gas flow rate and air flow rate are adjusted to achieve efficient combustion close to complete combustion, so a thin, blue flame is acceptable. Furthermore, the gas flow rate and air flow rate can be kept constant. Although it varies depending on the shape of the burner head (or nozzle), the laminar flame emanating from the tip of the burner often spreads in a nearly conical shape. When gas and air are evenly mixed and burn in a laminar flow state, the flame spreads at a constant angle. The temperature and combustion characteristics of the flame differ depending on the type of gas, which affects the shape and size of the flame, but by using a specific type, it is possible to predict a constant shape and size. In general, it can be assumed that a flame is formed from a cylinder with a nozzle having a circular or nearly circular end face, and if this is kept constant at a predetermined diameter, the resulting flame can be made to have a nearly constant shape depending on the gas flow rate. Such flame shapes can be confirmed in advance through experiments, etc.

[0013] For example, if very little gas escapes from the combustion chamber, the outer edge of the flame is defined by the outer shape of the combustion chamber (the outer diameter of the chamber and the opening at the top), making it easier to achieve complete combustion and easy to see even if the flame is pale. However, the outer wall of the combustion chamber is not extremely hot, and when igniting from the opening of the combustion chamber, the heat from the flame moves upward due to gravity, so ignition is only possible if the flame is directly above the opening. On the other hand, ignition can also be done with the flame directed horizontally or slightly downward. In this case, the combustion gases heated by the flame (mainly water vapor and carbon dioxide, etc.) move upward due to gravity, so the combustion gases from a flame directed horizontally or slightly downward towards the object being ignited have difficulty reaching that object.

[0014] Therefore, the present invention provides a lighter equipped with a component that forms a flame using a lighter such as a gas burner, and is positioned so that at least a portion of the outer flame is visible, allowing for relatively easy ignition even when the lighter is held horizontally or downwards. In this way, even if the color of the flame is faint and difficult to see, the component is visible, making it easy to determine the position of the outer flame and allowing the user to approach the object to be ignited as closely as necessary. On the other hand, since the outer flame does not spread beyond the component, there is no risk of getting too close to the flame by using the visible component as a guide to maintain a safe distance.

[0015] Furthermore, the component does not completely block the flame, and may have openings in at least a portion of it through which the flame can pass. Through these openings, the high-temperature flame can pass over the component and travel in the direction of the flame's progression, reaching the object to be ignited and igniting it. Also, since the component is heated by the flame, including the outer flame, it becomes hot and emits radiant heat. The object to be ignited may be ignited by this radiant heat and / or by heat transfer through contact with the high-temperature component.

[0016] Furthermore, the component may be made of a material that does not allow air to pass through easily, and can also function as a windbreak to prevent the lighter's flame from being extinguished by a crosswind. As a result, a stable flame can be maintained.

[0017] More specifically, the following can be provided: (1) A lighter capable of igniting ejected fuel to form a flame, comprising: an ejection port from which fuel is ejected; a tube through which the fuel ejected from the ejection port flows; an air vent provided in the tube to supply air into the tube; an ignition device for igniting the fuel; and a visualizing member that can contact the flame formed by the ignition device and exiting the nozzle of the tube along the direction of fuel flow, wherein the visualizing member has an opening through which at least a portion of the formed flame can travel in its direction of progression, and is further heated by the flame and exposed in a manner that it can contact the object to be ignited by the lighter. (2) The lighter according to (1) above, wherein the visualizing member includes a mesh structure and is attached to cover the nozzle. (3) The lighter according to (1) or (2) above, wherein at least a portion of the visualizing member is positioned in close proximity to or near the outer flame of the formed flame, or positioned outside the outer flame of the formed flame. (4) The lighter according to any one of (1) to (3) above, wherein the tube includes a combustion cylinder having a nozzle on which a flame is formed, and the visualization member is attached directly or indirectly to the combustion cylinder. (5) The lighter according to any one of (1) to (4) above, wherein the visualization member is made of a material that is heated to a high temperature by the formed flame and emits visible light by radiating heat. (6) The lighter according to any one of (1) to (5) above, wherein the visualization member includes a windbreak member that can prevent wind from blowing out the formed flame. (7) The lighter according to any one of (1) to (6) above, wherein the visualization member has a shape that can ignite an object to be ignited by directly contacting the object to be ignited. (8) The lighter according to any one of (1) to (7) above, further comprising a control device that can adjust the flow rate of the ejected fuel. (9) The lighter according to any one of (1) to (8) above, wherein the tube includes a mixing tube that can mix the fuel and the air.(10) The lighter according to any one of (1) to (9) above, characterized in that the ignition device is a piezoelectric ignition device, a spark discharge ignition device, and / or an arc discharge ignition device. (11) The lighter according to any one of (1) to (10) above, characterized in that the number and / or size of the air holes can be adjusted. (12) A method for lighting moxa using the lighter according to any one of (1) to (11) above.

[0018] Any of the lighters described above may be equipped with a grip for the user to hold. The grip may be positioned so as not to cause abnormal overheating (to the point of burns or other injuries) of the user's hands or other body parts due to the heat generated by the flame. For example, it may be positioned at a distance from the nozzle that is 1, 2, 3, or 4 times the diameter of the combustion cylinder. An operating part for igniting the lighter may be provided on or near the grip. Alternatively, if the visible member includes a cylindrical shape, it may be positioned at a distance from the nozzle that is 1, 2, 3, or 4 times the diameter of the cylinder. Here, the fuel may include fuel gas. It may also include a flammable gas that can vaporize at room temperature (1 to 30°C). For example, it may include hydrocarbons with 1 to 10 carbon atoms. It may include propane, propylene, butane, butene, pentane, pentene, etc. Flame refers to the part that emits light and heat when something burns, and may also mean a flame. A flame refers to the part of a fire that emits light and heat, like a spike, when a gas burns. Generally, it refers to the part that emits light and heat when something burns. It may be composed of combustion gases, etc. A lighter may be a device for starting a fire. It may be a combustion type that consumes some kind of fuel. It can ignite many things, including cigarettes. It may include various types depending on the application, such as long-handled ones for lighting burners in the back of gas stoves or stoves, or fireworks, small ones for lighting candles on Buddhist altars, and large ones with windbreaks for lighting incense sticks outdoors when visiting graves in windy conditions. For example, it can be used to light moxa. Moxibustion generally includes direct moxibustion and indirect moxibustion. Direct moxibustion involves making moxa the size of a grain of rice or other size and placing it directly on the skin (at an acupuncture point) and lighting it (incense sticks may also be used). Indirect moxibustion involves creating a space between the burning moxa and the skin, or placing an object (such as a moxa paper) between them. Examples include cylindrical moxibustion, stick moxibustion, moxibustion on acupuncture needles, and box moxibustion. Since the moxa is lit close to the skin, care must be taken to avoid burns from flames.Lighters may include igniters (including igniters) including gas igniters, gas lighters, ignition burners and burners including ignition burners, ignition torches and torches including ignition torches, etc.

[0019] The nozzle may include a hole through which fuel flows out, and its shape may be any shape, such as circular, elliptical, rectangular, polygonal, etc., and may also be a shape that allows adjustment of the fuel flow velocity and flow rate (including variable shapes). The flow of fuel may include the movement of fuel gas, etc., through the pipe in a general direction of travel. The direction of flow can also be said to correspond to this direction of movement or travel. The shape of the nozzle does not have to be variable. It may maintain a constant shape. The pipe may be capable of passing a fluid such as a gas, and the cross-sectional shape of the pipe may be any shape, such as circular, elliptical, rectangular, polygonal, etc. The pipe may include at least one of a conduit, a mixing pipe, a combustion chamber, etc. For example, the pipe may be a conduit, a mixing pipe, a combustion chamber, a conduit and a mixing pipe, a conduit and a combustion chamber, a mixing pipe and a combustion chamber, or a conduit, a mixing pipe and a combustion chamber. The conduit and the mixing tube may have the same length and diameter (inner and outer diameter), and the conduit may be shorter and smaller in length and larger in diameter, longer and smaller in diameter, or longer and larger in diameter. The conduit and the combustion tube may have the same length and diameter (inner and outer diameter), and the conduit may be shorter and smaller in length and larger in diameter, longer and smaller in diameter, or longer and larger in diameter. The mixing tube and the combustion tube may have the same length and diameter (inner and outer diameter), and the mixing tube may be shorter and smaller in diameter, shorter and larger in diameter, longer and smaller in diameter, or longer and larger in diameter. Any combination of length and diameter is acceptable. The air vent may be an opening of any shape that allows air, etc., from around the tube or lighter to enter. The ignition device may be any device that can ignite the fuel. For example, the device may include a device that induces at least one of the following types of discharges: spark discharge, corona discharge, glow discharge, and arc discharge.

[0020] A mesh structure can also be generally called a network structure. It may include a mesh-like structure with gaps, such as those used in sieves. Smaller particles can pass through these gaps. For example, the following are examples based on mesh number. The visualization member may include one or more types of such mesh structures. Alternatively, a plate without holes may have multiple holes drilled in it to achieve a similar function. Here, since it comes into contact with flames, it is preferable that it be heat-resistant. For example, it may be made of a heat-resistant metal or alloy such as iron (stainless steel, etc.).

[0021] Contact with a flame may mean a state in which the combustion gases, etc., that make up the flame come into contact with an object. When a flame is freely formed, it may mean a state in which the object to contact is located at the location where at least a part of the flame is present. A visualization member may mean something that is mainly visible to the naked eye. A visualization member may be composed of at least a material that can reflect visible light. The shape, structure, and components of the visualization member may be anything. The direction of flame propagation may mean the direction in which the flame spreads. For example, if it consists of an inner flame and an outer flame, it may include the direction from the inner flame to the outer flame. Since the fuel reacts with oxygen in the air and releases reaction heat, the combustion gases, etc. are heated and expand, and it may also include the direction in which they spread from the inside to the outside. The opening of the visualization member is configured so that at least a part of the flame can travel in its direction of propagation. For example, it may include the movement of combustion gases through this opening.

[0022] The visualization member may be formed to surround the flame. For example, it may be formed to suppress the spread of the flame. Suppressing the spread of the flame may mean that the spread (volume) of the flame is smaller compared to the flame without the visualization member. For example, it may mean that the spread of the flame is reduced by 10% or more, 20% or more, 30% or more, 40% or more, or 50% or more. (That is, the volume of the flame is 90% or less, 80% or less, 70% or less, 60% or less, or 50% or less of the volume of the flame without the visualization member.) For example, it may be reduced by 30% to 40%. This reduction may be less than 100% or 99% or less. The visualization member may also be arranged to surround the highest temperature portion of the flame. The size and shape of the flame may be adjusted by the volume surrounded by the visualization member, the shape and size of the ejection hole, and the flow velocity of the fuel gas, etc. It is preferable that the temperature distribution spreads concentrically (concentric spheres if considered in three dimensions) from the highest temperature portion of the flame. Flames tend to elongate in the direction of injection, combustion, and upward due to the thermal expansion flow of the combustion gases being injected and heated, as well as due to convection. For example, if a burner is injected upward and a flame is formed upward, the flame will be extended vertically. If a burner is injected horizontally, the flame will extend horizontally or nearly horizontally near the nozzle outlet, following the direction of injection and thermal expansion. However, due to the influence of convection, the flame will change shape and curve upward at the end of its extension. This is thought to be due to the influence of convection, where high-temperature gases flow upward due to gravity. Furthermore, if a burner is injected diagonally downward, the flame will extend diagonally downward near the nozzle outlet, following the direction of injection and thermal expansion. However, due to the influence of convection, the flame will change shape and curve horizontally and even upward (e.g., into a V-shape) at the end of its extension. This is also thought to be due to the influence of convection, where high-temperature gases flow upward due to gravity. On the other hand, if the visualization element is positioned to surround the hottest part of the flame, the effects of convection are suppressed. For example, when observing the flame from the outside (e.g., the side), the hottest core flame (the hottest part) can be nearly circular (spherical in three dimensions), and the surrounding high-temperature flame, the peripheral flame, can also be nearly circular (spherical in three dimensions).

[0023] The object to be ignited may mean an object that is ignited or set on fire (or is set on fire or set on fire) by a lighter. For example, it may include candles, gas stoves, moxibustion, etc. Being able to contact the object to be ignited may mean being close enough to ignite the object. For example, it may mean being close enough to apply enough heat to exceed the ignition point of the object to be ignited. It may also mean being close enough to apply mechanical force. Being exposed may mean being on the surface, and more specifically, it may mean being in a state where it can be contacted by the object to be ignited. For example, it may mean being located outside the pipe through which the fuel ejected from the aforementioned nozzle flows. Furthermore, even if there is a windbreak member, at least a part of it may be exposed to the outside. For example, the windbreak member may have a large hole (e.g., a lateral hole) so that the visualization member is directly visible. It is preferable that the large hole is open in a way that allows it to be contacted by the object to be ignited. For example, such holes may be located in a direction approximately perpendicular (lateral) to the direction of fuel gas injection or the direction in which the flame extends. For example, when igniting moxa, the moxa (about 1 cm to 1.5 cm high) is placed on the skin surface almost horizontally or nearly horizontally and ignited from above by an ignition source such as an incense stick or lighter. Therefore, the combustion gas and the high-temperature gas heated by combustion are thought to move upward from the ignition source due to the effect of gravity (heat transfer by convection), and the effect on the skin surface is considered to be small. The amount of heat applied to the skin surface is thought to be mainly due to heat conduction and / or heat radiation mediated by air. If the temperature of the heat source is extremely high, a large amount of thermal energy is instantly transferred to the skin surface by heat radiation (radiant heat), but with a normal flame, the infrared radiation is about 0.7 to 10 μm, and for a short time (for example, about 1 to 5 seconds), the effect on the skin surface is considered to be small. On the other hand, the thermal conductivity of gas is small, and heat conduction is also thought to have little effect on the skin surface for a short time (for example, about 1 to 5 seconds). In other words, it is considered important that the outer edge of the flame does not substantially reach the skin surface when ignited."Substantially not reaching" may mean that the outer edge of the flame, such as the outer flame constituting the flame, does not come into contact with the skin surface, or that the distance between the skin surface and the outer edge is at least 1 mm, 2 mm, 3 mm, or 4 mm.

[0024] The outer flame may refer to the outer edge of the flame. For example, it may include a region where oxygen diffuses sufficiently from the surrounding air and reacts almost completely with the unburned fuel gas. Since diffusion occurs from the surface, this may correspond to a thin layer (zone) outside the flame. Positioning at least a portion of the visualization member to be close to or near the outer flame may mean positioning such that a portion of it is heated by the outer flame to a temperature above a desired level. For example, a portion of it may be in contact with the outer flame. Alternatively, a portion of it may be located outside the outer flame if it is heated to a temperature above a desired level. Or, even if the temperature of the visualization member does not exceed the above-mentioned temperature, the flame may extend from the opening of the visualization member and directly contact the object to be ignited.

[0025] For example, when igniting moxa, the temperature of the ignition source may be 200°C or higher, 300°C or higher, 400°C or higher, 500°C or higher, 600°C or higher, or 700°C or higher. For example, the burning part of an incense stick is said to be red-hot (around 700-800°C), and it is possible to ignite moxa at this temperature. The flame temperature of a lighter such as a bath burner is said to be 1000°C or higher. Therefore, a visualization member that can come into contact with the flame can also be heated to red-hot (around 700-800°C). Furthermore, there is no particular upper limit required for the temperature of the ignition source, but it is considered preferable to keep it below a temperature where the effect of radiant heat is not significant. For example, it may be 2000°C or lower, 1800°C or lower, 1600°C or lower, 1500°C or lower, 1400°C or lower, or 1300°C or lower. Then, this heated visualization member can ignite moxa in the same way as igniting with an incense stick. Even if the visualization member is not heated to its temperature, the lighter has an opening in the visualization member that allows at least a portion of the formed flame to travel in its direction of travel, so that the flame coming out of the opening can reach or come into contact with moxa or the like, making ignition possible. At this time, the degree to which the flame protrudes is controlled by the visualization member, so even if it is difficult to see the flame, the protruding portion of the flame can be sufficiently confirmed. For example, the degree of protrusion may be set to 2 mm or less, 1.8 mm or less, 1.6 mm or less, 1.4 mm or less, 1.2 mm or less, 1 mm or less, 0.8 mm or less, 0.6 mm or less, or 0.4 mm or less from the outer surface of the visualization member.

[0026] The mesh structure may mean a net-like structure, a grid-like structure, a structure with holes in a plate-like object, a perforated structure, etc. The combustion cylinder may include a component in which combustion takes place in the cavity inside. Its cross-section may be any shape, such as a circle, ellipse, rectangle, polygon, etc. The combustion cylinder may be provided with a nozzle from which a flame is emitted at least at one end. The nozzle may be any shape, such as a circle, ellipse, rectangle, polygon, etc. The visualization member being directly or indirectly attached to the combustion cylinder may include the visualization member being directly attached by mechanical means such as bolts or screws, by methods such as welding, or indirectly attached via an intermediate member. The high temperature achieved by heating the visualization member may mean a temperature at which the object to be ignited can be set ablaze. Emitting radiant heat may include being maintained as a solid without melting at that temperature. Visible light may include light with a wavelength of approximately 360 nm to approximately 830 nm. It may also include light with a wavelength of approximately 400 nm to approximately 760 nm. The wind that can extinguish the flame may include so-called crosswinds. It may also include wind blowing from the side of the direction in which the flame is spreading. The shape capable of igniting the object to be ignited may be any shape that can directly contact the object to be ignited.

[0027] A control device capable of adjusting the fuel flow rate may include a flow control valve that restricts the flow rate, such as a throttle valve. Not only the flow rate but also the flow rate may be adjustable. The mixing tube may include a tube in which the fuel gas and air are mixed in a cavity inside it. It may be integrated with the combustion chamber. The air holes may be of any shape and may be one or more in number. The amount of air may be adjustable and variable.

[0028] As described above, in the embodiment of the present invention, the visualization member is provided, making it easier to grasp the flame of the lighter and facilitating the ignition or lighting operation.

[0029] This figure shows a schematic diagram of the igniter in an embodiment of the present application. This figure shows a magnified view of part B in Figure 1. This figure shows a magnified view of part A in Figure 1. This figure shows a magnified view of part A in Figure 1. This figure illustrates the flame (diffused flame) of a normal lighter, etc. This figure illustrates the flame (external combustion) of a Bunsen burner, etc. This figure illustrates the flame (internal combustion) of a turbo lighter, etc. This figure illustrates the flame (internal combustion + catalyst) of a catalytic lighter, etc. This figure illustrates the flame of a burner. This figure shows photographs comparing the flames of burners. This figure schematically illustrates the flame near the burner mesh. This figure illustrates the structure of a burner. This figure shows a front view of the igniter in an embodiment of the present application. This figure shows a left side view of the igniter in an embodiment of the present application. This figure shows a top view of the igniter in an embodiment of the present application. This figure shows a cross-sectional view of the igniter along A-A in an embodiment of the present application. This figure shows a cross-sectional view of the igniter along B-B in an embodiment of the present application. This figure shows a magnified view of a part of the igniter with another visualization member (flame member) attached in an embodiment of the present application. This diagram shows another visualization member (flame member (cylindrical)) in an embodiment of the present application. This diagram shows another visualization member (flame member (cylindrical)) in an embodiment of the present application. This diagram shows another visualization member (flame member (long hemisphere)) in an embodiment of the present application. This diagram shows another visualization member (flame member (long hemisphere)) in an embodiment of the present application. This diagram shows another visualization member (flame member (hemispherical)) in an embodiment of the present application. This diagram shows another visualization member (flame member (hemispherical)) in an embodiment of the present application. This diagram shows another visualization member (flame member (ellipsoidal)) in an embodiment of the present application. This diagram shows another visualization member (flame member (ellipsoidal)) in an embodiment of the present application. This diagram shows another visualization member (flame member (bag)) in an embodiment of the present application. This diagram shows another visualization member (flame member (bag)) in an embodiment of the present application. This diagram shows the mounting structure of another visualization member (flame member) in an embodiment of the present application. This diagram shows the mounting structure of another visualization member (flame member) in an embodiment of the present application. This figure shows a simplified mounting structure for another visualization member (flame member) in an embodiment of the present application. This figure shows a simplified mounting structure for another visualization member (flame member) in an embodiment of the present application. This figure shows a simplified mounting structure for another visualization member (flame member) in an embodiment of the present application.This figure shows mounting method 3 for another visualization member (flame member) in an embodiment of the present application. This figure shows mounting method 3 for another visualization member (flame member) in an embodiment of the present application. This figure shows mounting method 2 for another visualization member (flame member) in an embodiment of the present application. This figure shows specification 3 for another visualization member (flame member) in an embodiment of the present application. This figure shows specification 3 for another visualization member (flame member) in an embodiment of the present application. This figure shows the usage state of the igniter in an embodiment of the present application. This figure shows the usage state of the igniter in an embodiment of the present application. This figure shows a partial structural diagram of the burner.

[0030] The embodiments of the present invention will be described below with reference to the drawings. Similar elements will be given the same numbers, and their descriptions will be omitted.

[0031] Figures 1 to 4 show a gas igniter according to an embodiment of the present invention. Figure 1 shows the overall structure, Figure 2 shows a magnified view of part B, and Figures 3 and 4 show magnified views of part A. Figure 1 shows a schematic diagram of the overall structure of the igniter 10 as a lighter, which is an embodiment of the present invention. The igniter 10 consists, from top to bottom in the figure, mainly a cylindrical tip, a thick disc-shaped operating part, and an elliptical cylinder-shaped fuel storage part. The tip of the tip has part B, which will be described later, from which a flame for ignition is emitted. On the fuel storage part side of the operating part is part A, which will be described later, and fuel can be flowed or stopped via a valve so that the flow rate and / or flow velocity can be adjusted. Figure 2 is a magnified view of part B and is a cross-sectional view. Vaporized fuel gas flows upward in the fuel passage 64 extending from below, and the conduit 14 is filled with GAS (14a). This conduit 14 is fitted into the mixing tube 16 by being in contact with it, with a nozzle plate 15 placed at its upper end. The fuel gas flows upward in the diagram from an opening located approximately in the center of the nozzle plate 15, accelerating its flow velocity. This flow creates a negative pressure in the mixing tube 16, into which air is drawn in through an opening 18, an air hole in the mixing tube 16, and mixed with the gas. This mixture then diffuses and mixes within the diffusion tube 22, which is fitted in contact with the mixing tube 16. The diffusion tube 22 engages with the insulating tube 20 through interlocking grooves, ensuring its vertical position. The gas diffused and mixed within the diffusion tube 22 flows out through a plurality of openings 24 located above the diffusion tube 22, and the mixed gas passes through the discharge point 21. At this time, a spark flies between the top of the diffusion tube 22 and the fixed sleeve 23, igniting the mixed gas and forming a flame. A combustion tube is positioned at the upper end of the insulating tube 20. An internal combustion flame 25 is formed within this combustion tube, and an external flame is formed from the internal combustion flame 25 and the point where it exits the combustion tube. A burner mesh 26 made of metal mesh (#40) is placed over the upper end of the combustion cylinder by a bracket 27, and the outer flame of the formed flame protrudes slightly outside the burner mesh 26 as shown by the double line. This burner mesh 26 corresponds to a visualization member. The burner mesh 26 consists of a mounting bracket 27, a cylindrical part, and a dome-shaped top part. The diameter of the cylindrical part may be used as a typical dimension of the burner mesh 26.

[0032] Figures 3 and 4 illustrate how fuel gas flows from the fuel tank into the conduit. The fuel pipe 62 connected from the fuel tank in the fuel storage section extends upward via an adjustment section with an adjustment ring 63 equipped with an adjustment lever that can adjust the flow rate. A valve 60 is fitted to the outside of the valve, and the lower end of this valve 60 is in contact with a valve push-up plate that has a hole through which the fuel pipe 62 passes. Figure 3 shows the state when fuel gas is not in use, and the pressing part 52 connected to the ignition button of the ignition device is located at the upper end of the figure. An arm 54 is connected to this pressing part 52, and a sliding part 56 is provided at the end of the arm 54, which is provided so as to be able to contact the upper left surface of the push-up lever in the figure. Figure 4 shows the state when the igniter 10 is being operated. When the ignition button is pressed, the connected pressing part 52 is pushed down, and the arm 54 connected to the pressing part 52 is pushed down as well. The sliding part 56 at the tip of the arm 54 comes into contact with the upper left surface of the push-up lever 58, attempting to push the push-up lever 58 down. The push-up lever 58 rotates around its pivot shaft, pushing the valve push-up plate upward. This causes the vaporized fuel gas from the fuel tank to flow upward through the fuel pipe 62 and into the GAS (64a) fuel passage 64.

[0033] Here, we will explain the flame with reference to Figures 9A and 9B. The typical orange flame, commonly referred to as a normal flame, is produced when air is supplied at the time of combustion. Such gas lighters are called post-mixing burner lighters. On the other hand, the blue flame, which is produced by internal combustion, is produced when the fuel and air are mixed and burned before being supplied for combustion. Such gas lighters are called pre-mixing burner lighters. (See JIS S 4801 2018 and JIS S 4802 2018.) Furthermore, even within internal combustion lighters, there are types that burn the blue flame inside the combustion cylinder and types that eject the blue flame to the outside. The former is less affected by wind because the flame continues to burn inside the lighter. In this case, the flame is blue (semi-transparent), which can make it difficult to see, especially outdoors, so the flame is sometimes colored to make it easier to see (see above). In the latter case, the flame is released outside the combustion cylinder, so it is more susceptible to wind, and the blue flame itself has a straight-line trajectory. The heat output is stronger and ignition is faster than the former, but gas consumption is higher. Figure 9A is a schematic diagram showing the flame of a typical burner. The flame mainly consists of a blue-green inner flame and a light blue outer flame. The inner flame is at a high temperature of 300°C to 500°C, and the outer flame is at a high temperature of 1500°C to 1800°C.

[0034] Figure 9B shows the flame state for these burners. The top row shows a normal flame, the middle row shows an internal combustion flame, and the bottom row shows the flame of an igniter (lighter) with a burner mesh 26, one embodiment of the visualization member of the present invention, attached to its tip. The left side of this table shows the case where the burner is pointed upwards during combustion, the center shows the case where the burner is pointed horizontally during combustion, and the right side shows the case where the burner is pointed slightly downwards during combustion. In the same row and column of this table, a normal photograph is shown on the right and a diagram taken with a thermotracer is shown on the left. For example, in the case of a normal flame, when igniting upwards, the height of the glowing flame in a normal photograph is about 35 mm, but in the thermotracer, the flame that is considered to be at a high temperature and has even a slight reddish tint extends to about 70 mm. In the case of a standard burner, when ignited upwards, the height of the glowing flame in a normal photograph is about 30 mm. However, with a thermotracer, the flame that shows even a slight reddish tint, indicating high temperature, extends to about 40 mm (in the section marked 50 mm in the diagram, the upper part exceeding 40 mm does not appear reddish upon closer inspection). Furthermore, in the case of a mesh burner, no glowing flame is visible in the photograph; instead, the burner mesh becomes hot due to heating, emitting red radiant heat. Figure 9C schematically illustrates the flame near the burner mesh 26, with the burner mesh 26 attached to the tip of the tip pipe 12 drawn with a solid line. The tip of this burner mesh 26 has a flat, circular (approximately Φ5 mm) truncated shape, and the side surface, which is composed of a cylindrical shape with an outer diameter of approximately Φ8.4, is followed by an intermediate continuation shape with an R-chamfer of approximately R4, forming a cylindrical cage shape made of stainless steel mesh #40. The burner mesh 26 is fixed to the tip pipe 12 via a bracket 27 and a fixing sleeve 23. The outer diameter of the tip pipe 12 is approximately Φ10. The distance from the opening of the tip pipe 12 to the tip of the burner mesh 26 was approximately 13 mm. In the thermotracer, the white, brightly shining core flame portion 70, which is considered to be particularly hot, is observed in a circular shape (spherical in three dimensions) at the tip of the burner mesh, and its size is approximately 4 mm in diameter.Then, a slightly reddish flame, which may be lower in temperature than the core flame but is still considered to be at a high temperature, forms a ring-shaped area 72 (which in three dimensions would correspond to a shell shape) with a thickness of approximately 1 mm around it. Around this, a heat-affected zone 74 of approximately 30 mm is formed. However, since heat is transferred in this heat-affected zone mainly by conduction and / or radiation, it is thought that there is little heat transfer by convection in the affected zone unless ignition is continued for a long period of time. Therefore, if the duration of ignition is short, it is thought that even if a person's skin surface enters this area, it is unlikely to result in burns. Also, since heat transfer by convection mainly moves upward, the heat effect by convection on the object being ignited, such as moxa, is below the flame, is thought to be even smaller. This is thought to be because the mesh of the burner mesh restricts the spread of the flame and the diffusion and inflow of air. Thus, in the absence of a burner mesh, the flame (where even a slight redness is observed on the thermotracer) tends to extend vertically in an asymmetrical manner. On the other hand, if a burner mesh is present, the flame (where even a slight reddish tint is visible on the thermotracer) has its hottest core flame surrounded by the burner mesh, with an annular (spherical shell in three dimensions) flame or high-temperature area formed by the flame surrounding it. Generally, when a flame extends vertically, it becomes difficult to see where it is extending, and it may become difficult to control due to the influence of ambient airflow. To prevent this, it is preferable to cover the burner nozzle with a burner mesh and to adjust the fuel gas flow rate (and flow rate per unit time). On the other hand, if a burner mesh is not covered the nozzle, even if the fuel gas flow rate (and flow rate per unit time) is adjusted to be small, the resulting flame is susceptible to convection as it draws in the surrounding air.

[0035] Furthermore, while flames with a relatively dominant diffusion flame, considered a normal flame, are easily visible in ordinary photographs, burners, due to their high degree of complete combustion, do not easily appear in ordinary photographs. However, even with upward ignition, the flame length visible to the naked eye was 35 mm, while with the Thermotracer it was approximately 70 mm, almost double the length. With horizontal ignition, perhaps due to the low flow velocity (or flow rate per unit time) of the fuel gas, the flame did not travel straight and quickly rose upward (convection became dominant), with a length of 25 mm, but with the Thermotracer it was approximately 55 mm (almost no redness was observed above approximately 55 mm), more than double the length. Also, with downward ignition, perhaps due to the low flow velocity (or flow rate per unit time) of the fuel gas, the flame did not travel straight and quickly rose upward (convection became dominant), with a length of only about 20 mm, while with the Thermotracer it was more than double the length. On the other hand, in the case of an internal combustion burner that emits the flame outside the nozzle of the outer cylinder, even with upward ignition, the visible flame length is 30 mm, whereas with the Thermotracer, it was considerably longer at approximately 40 mm (almost no redness was observed above approximately 40 mm). With horizontal ignition, the flame has high straightness and does not easily point upward, remaining almost horizontal with a length of approximately 25 mm. However, with the Thermotracer, the flame extends almost horizontally for approximately 25 mm from the nozzle, where the fuel gas flow velocity (or flow rate per unit time) is thought to be high, but then curves upward at approximately 10 to 30 degrees (convection is becoming dominant), and its length is more than double. With downward ignition, the flame was highly directional and remained almost entirely downward, lasting approximately 25 mm. However, with the Thermotracer, the flame extended almost directly downward for about 25 mm from the nozzle, where the fuel gas flow velocity (or flow rate per unit time) is thought to be high. From there, it bent in a U-shape (convection becoming dominant), and a considerably longer flame was observed. In the case of such a burner, it is considered difficult to confirm the destination of the flame with the naked eye.

[0036] In the igniter, which is an embodiment of the present invention and is a mesh burner, the burner mesh, which is a visualization element, is visible in photographs as emitting red heat, regardless of whether it is upward ignition, horizontal ignition, or downward ignition. Furthermore, in a thermotracer, that part (core flame 70) is almost circular (almost spherical in three dimensions) and glows white, indicating that it is at a high temperature. A thin (or narrow) ring-shaped peripheral flame 72 is observed around the almost circular core flame. Both the core flame 70 and the peripheral flame 72 are almost spherical in shape, suggesting that convection is suppressed. In other words, it is thought that the burner mesh may have a function that conforms the shape of the core flame 70 to the shape of the burner mesh, suppressing or reflecting the upward flow of gravity-induced convection that would otherwise extend above the core flame 70, or turning it into a downward flow. It is also thought that the flame is formed to be almost spherical in shape. Furthermore, there is a heat-affected zone 74 around the circumferential flame 72, but this region also tends to be concentric and spherical, suggesting that gravity-based convection does not have much influence. Moreover, the temperature of this heat-affected zone 74 is relatively low, and may be 60°C or below, or even 50°C or below. Also, since the igniter in this embodiment is a handheld type, it is preferable that the gripping and operating parts, which are in close proximity to the hands and fingers, are outside this heat-affected zone 74. The burner mesh 26 may be placed at a distance of 1, 2, 3, or 4 times the diameter of the cylindrical part of the burner mesh 26 from the burner nozzle. In this figure, the burner mesh is seen to be emitting heat and glowing red, but even if it does not glow red, the burner mesh is visible to the naked eye, so if the circumferential flame 72 of the flame extends about 1 mm beyond the burner mesh, the user can recognize this, and therefore, if there is a burner mesh, the spread of the flame can be recognized with the naked eye. This is because ignition is performed by the user, and if the burner is actually ignited, the sound of combustion can be perceived.

[0037] Figure 10 illustrates the basic structure of a burner, which is an ignition device. A burner mainly consists of a combustion tube, a diffuser, a mixing tube, an air vent, and a nozzle, and it is preferable to combine these in a balanced manner. The combustion tube is the part that burns the gas mixed with air, and the burning flame can be kept inside the combustion tube or released outside. The diffuser reduces the flow velocity of the gas mixture to make it easier to ignite and burn. Therefore, the gas mixture flows into the combustion tube at a low speed. The mixing tube is the space where the gas and air are mixed. The flow velocity of the gas mixture here is relatively high. The air vent is a hole that supplies the surrounding air attracted by the forcefully ejected gas. Primary air flows in from here. The nozzle is a hole with a very small diameter that increases the flow velocity of the ejected gas.

[0038] Here, a general burner will be described with reference to Figure 39. The burner that can be used in the igniter of the embodiment of the present invention has the configuration shown in the exploded view of Figure 39. In the figure, as indicated by the upward arrow at the lower end, fuel gas flows upward through the conduit 914 and is airtightly connected to the mixing tube 910 via the burner O-ring 915. The conduit 914 and the mixing tube 910 are in communication via a mesh 913 as a filter, a fixing ring 912, and a nozzle plate 911 fixed in this order between the edge surface of the opening at the tip of the conduit 914 and the lower surface of a horizontal plate with an opening hole in the center located below the mixing tube 910. The fuel gas injected from the extremely small diameter hole in the nozzle plate 911 draws in ambient air (primary air) from the air hole in the mixing tube 910, and the two are mixed in the mixing tube 910. The outer diameter of the mixing tube 910 is fitted so as to contact the lower inner diameter of the insulating tube 908, and the male threads cut into the diffusion tube 907, which is inserted into the insulating tube 908 at its lower end, are screwed into the female threads cut into the upper part of the mixing tube, sandwiching the insulating tube 908. A discharge ring 906 is positioned on the end face of the opening at the upper end of the insulating tube 908, and it abuts against the end face of the opening at the lower end of the cylindrical spacer 905, and the male threads of the burner fixing screw 909 are screwed into the female threads cut into the lower inner diameter side of the combustion tube 901, fixing the discharge ring 906. A substantially cylindrical flame color holder 904 is positioned on the end face of the upper end of the cylindrical spacer 905, and a flame color member 903 is positioned on the end face of the lower end of the holder ring 902, which fits into a recess having an open end. The upper end of the holder ring 902 abuts against the lower surface of a constricting ring integrally provided at the upper opening of the combustion cylinder 901, thereby fixing the holder ring 902 and the flame coloring member 903. However, in the burner used in the embodiment of the present invention, this flame coloring member is unnecessary.

[0039] Figures 11 to 15 illustrate an igniter 10 which is an embodiment of the present invention. Figure 11 is a front view of the igniter, Figure 12 is a left side view of the igniter, Figure 13 is a top view of the igniter, Figure 14 is a cross-sectional view along A-A of the igniter in Figure 12, and Figure 15 is a cross-sectional view along B-B of the igniter in Figure 13. Basically, it is the same as the igniter in Figure 1, so redundant explanations will be omitted. In the igniter in Figure 11, etc., an outer cap 80, like a sheath, is placed over the outside of the outer cylinder 12.

[0040] Figures 16 to 26 are front and perspective views showing variations of the mesh cap, which is the burner mesh 26. Figure 16 shows an example in which a bracket is provided at the tip of the outer cylinder 12, which is the combustion cylinder, and a tapered mesh cap is attached. With such a tapered shape, if the core flame is spherical, it is thought that the flame will easily spill out from the side at the tip. Therefore, it is expected that ignition of the object to be ignited from the side will be easier. In particular, when the outer cylinder is horizontal or the tip is tilted slightly downward, side ignition is very effective. Figures 17 and 18 show an example in which a mesh cap with a flat cylindrical tip is attached. Here, since the tip is a cylindrical shape with a flat mesh end, it is expected that the flame will easily spill out from the tip. Figures 19 and 20 show an example in which a mesh cap with a spherical (or dome-shaped) tip, which is an overall long hemisphere, is attached. Compared to the previous example, since the tip is dome-shaped, it is expected that the flame spillout will be more uniform. Figures 21 and 22 show examples of mesh caps with a spherical hemisphere tip. Since the side portion is narrowed, it is expected to be preferable for pinpoint ignition of the object to be ignited. Figures 23 and 24 show examples of mesh caps with a tip that is part of an ellipsoid. Since almost only the tip portion is considered to be the ignition point, contact ignition with the object to be ignited at a small flame or relatively low temperature is expected. Figures 25 and 26 show examples of mesh caps with a bag shape, where both sides of a cylinder or cylindrical shape are pressed diagonally to create a tapered shape, and the tip is narrowed to become straight. In this way, since it has tapered, flat sides like a duck's beak, it is expected that the flame will easily extend beyond the flat surface, and it is expected that ignition of the object to be ignited will be easier by approximating or contacting the side. In any case, at least one or more of the problems of the present invention can be achieved. In particular, when the device is in direct contact with the object to be ignited, it is preferable that the contact surface of the object to be ignited has a shape that allows for sufficient contact.

[0041] Figures 27 to 34 show various examples of mounting specifications for the burner mesh 26. Figures 27 and 28 illustrate a mounting specification known as the standard structure. The mesh assembly, including the mesh cap, is configured such that a fixing sleeve is inserted into the outer pipe, and the annular edge of the rear end opening of the mesh assembly, placed at the tip, engages with the external thread of the small-diameter tip of the fixing sleeve, sandwiching the annular edge of the rear end opening of the mesh assembly that forms a narrowed opening at the tip of the pipe, thereby fixing them together, and the nozzle, which will be the tip of the burner, abuts against the inner diameter of the rear end of the fixing sleeve. Figures 29 to 31 illustrate a mounting specification known as the simplified structure. The mesh assembly, including the mesh cap, is constructed by inserting the mesh assembly and burner into the outer pipe in that order. The tip of the mesh cap of the mesh assembly is exposed through an opening at the tip of the outer pipe, which is narrowed by a constricted edge. The burner nozzle, which will be the tip of the burner, is fixed in place by pressing it against this constricted edge so that it abuts against the inner diameter of the opening at the rear end of the mesh assembly. Figures 32 and 33 show the mounting specifications of a burner mesh that has a fitting portion like a skirt that provides a clearance fit on the outer diameter of the combustion tube pipe. This fitting portion has an L-shaped notch that leads to the opening at the rear end, and a projection provided on the outer surface of the pipe can pass through it. The projection that has passed through at one end can be locked in the L-shaped notch of this fitting portion by rotation. This burner mesh has a cylindrical shape with a flat circular mesh stretched over the opening at the tip, and the sides are provided with a plurality of end circular slits along the cylindrical axis. Figure 34 shows a specification in which an internal thread is cut into the inner diameter of the opening at the rear end of the mesh assembly, and an external thread is cut into the tip of the outer pipe, allowing for fitting. As can be seen from Figure 34, by using threading for fitting, different types of mesh components can be made readily available and easily adapted to various ignition targets (or ignition targets).

[0042] Figures 35 and 36 show another type of flame member. This flame member may be attached using a simple mounting method as shown in Figures 29 to 31. This flame member has a mesh member placed at the tip opening.

[0043] Figures 37 and 38 schematically show the state in which the igniter 10 of the embodiment of the present invention is used for moxibustion ignition. Moxibustion includes pedestal moxibustion, which can indirectly warm acupuncture points by lighting moxa on a pedestal on a base, and direct moxibustion, such as placing a moxa of about the size of a grain of rice directly on the skin and lighting it with a stick incense. In FIG. 37, a commercially available pedestal moxibustion 100 is placed on the skin surface 110 and ignited with the igniter of the embodiment of the present invention. The size of a normal pedestal moxibustion 100 is often a disc with a diameter of 10 mm to 20 mm (a few millimeters thick) with a cylindrical vertical rod with a diameter of a few millimeters standing about 10 mm to 20 mm at the center. Even when igniting at the upper end of the standing cylindrical shape, ignition can be performed at a position 10 to 20 mm away from the skin surface 110. At this time, the igniter 10 is approximately 10 to 25 mm away from the surface 110 and has an inclination of approximately 20 to 40 degrees with respect to the surface, without exerting an excessive heat influence on the skin surface 110. Also, because of such an inclination, the ignition operation can be easily performed, and the grip portion and the operation portion are more than 5 times the diameter away from the burner mesh, so there is almost no heat influence on the hand and fingers. In FIG. 38, the state of igniting the moxa 102 pinched on the skin surface 110 like direct moxibustion with the igniter of the embodiment of the present invention is illustrated. Normal moxa ranges from the size of a grain of rice (1 to a few millimeters) to about 10 to 15 mm. Since it is very close to the skin surface 110, it is preferable to appropriately select the type of burner mesh and the size of the flame for use. In both cases, it can be seen that the spread of the unintended flame can be prevented and the high-temperature region can be grasped visually (with the naked eye).

[0044] Thus, an igniter such as the embodiment of the present invention can easily visually recognize the spread of the flame and prevent approaching an unintended high-temperature region.

[0045] 10 Ignition device 12 Tip pipe 14 Conduit 15 Nozzle plate 16 Mixing tube 18 Opening 20 Insulating tube 21 Discharge point 22 Diffusion tube 23 Fixing sleeve 25 Internal combustion flame 26 Burner mesh 27 Bracket 52 Pressing part 54 Arm 56 Slide part 58 Push-up lever 60 Valve 62 Fuel tube 64 Fuel passage 70 Core flame 72 Peripheral flame 74 Heat-affected zone 80 Outer cap 100 Base moxibustion 102 Moxa 110 Skin surface 901 Combustion tube 902 Holder ring 903 Flame color component 904 Flame color holder 905 Spacer 906 Discharge ring 907 Diffusion tube 908 Insulating tube 910 Mixing tube 911 Nozzle plate 912 Fixing ring 913 Mesh 915 Burner O-ring 914 Conduit 909 Burner fixing screw

Claims

1. A lighter capable of igniting ejected fuel to form a flame, comprising: an ejection port from which fuel is ejected; a tube through which the fuel ejected from the ejection port flows; an air vent provided in the tube to supply air into the tube; an ignition device for igniting the fuel; and a visualizing member that can contact the flame formed by the ignition device and exiting the nozzle of the tube along the direction of fuel flow, wherein the visualizing member has an opening from which at least a portion of the formed flame can travel in its direction of progression, and is further heated by the flame and exposed in a manner that allows it to contact the object to be ignited by the lighter.

2. The lighter according to claim 1, characterized in that the visualization member includes a mesh structure and is attached so as to cover the nozzle.

3. The lighter according to claim 1 or 2, characterized in that at least a portion of the visualization member is positioned in close proximity to or near the outer flame of the flame being formed, or positioned outside the outer flame of the flame being formed.

4. The lighter according to claim 1 or 2, wherein the tube includes a combustion cylinder having a nozzle on which a flame is formed, and the visualization member is attached directly or indirectly to the combustion cylinder.

5. The lighter according to claim 1 or 2, characterized in that the visualization member is made of a material that can emit visible light by being heated to a high temperature by the flame formed and emitting radiant heat.

6. The lighter according to claim 1 or 2, characterized in that the visualization member includes a windbreak member capable of preventing wind from blowing out the formed flame.

7. The lighter according to claim 1 or 2, characterized in that the visualization member has a shape that allows it to ignite the object to be ignited by directly contacting the object to be ignited.

8. The lighter according to claim 1 or 2, further comprising a control device capable of adjusting the flow rate of the ejected fuel.

9. The lighter according to claim 1 or 2, characterized in that the tube includes a mixing tube capable of mixing the fuel and the air.

10. The lighter according to claim 1 or 2, characterized in that the ignition device is a piezoelectric ignition device, a spark discharge ignition device, and / or an arc discharge ignition device.

11. The lighter according to claim 1 or 2, characterized in that the number and / or size of the air holes can be adjusted.

12. A method for igniting moxa using the lighter described in claim 1 or 2.

Images