Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
  • F24B15/00—Implements for use in connection with stoves or ranges

Definitions

• the present invention relates to a fire blower.
• a bonfire is lit outdoors during camping, glamping, etc.
• a bonfire is completed by making a small spark, then gradually growing the flame while moving it to something more combustible, and once the fire has gained momentum, the main fuel such as firewood is burned.
• a fire blower is a device used to make a spark bigger in a bonfire or fireplace.
• a fire blower has the form of an elongated cylindrical body, and is used to efficiently add momentum to the fire by blowing in air from one side and expelling it from the tip.
• a conventional example is the fire blower described in Patent Document 1.
• This fire blower is constructed as a cylindrical body having a breath inlet at one end and an outlet at the other end.
• This fire blower has a joint with a small hole in the center that obstructs the flow of air from the outlet to the cylinder of a predetermined length. It has a structure with an air inflow hole through which air flows. It is characterized by an air inflow hole that takes in air from outside the cylinder at the joint near the outlet, so that the air that blows out from the small hole in the joint takes in outside air and supplies it to the fire source. It is.
• the material of the fire blower can be made of synthetic resin, wood, bamboo, or cardboard other than metal, it is possible to protect it from the source of fire to a certain extent. It can be seen that it was made with the intention of placing the tip in a far position to blow air.
• the present invention has been invented in view of the above circumstances, and has a tip discharge section equipped with a material and structure capable of supplying exhaled air that takes in outside air at a position close to the fire source, and has a tip discharge section with a material and structure capable of supplying exhaled air that takes in outside air at a position close to the fire source.
• the objective is to provide a fire blower suitable for control.
• Another object of the present invention is to provide a fire blower which does not suck in hot air from the discharging tip when air is sucked in from the spout.
• the present invention has the following configuration. That is, It has a blowing means, an intermediate pipe, and a blowing means,
• the blowing means has a connecting portion having an open end constituting a blowing port provided at a distal end and a connecting port provided at a tip that communicates with the intermediate pipe, and the blowing means has a connecting portion having an open end constituting a blowing port provided at a distal end and a connecting port that communicates with the intermediate pipe provided at a tip, and a connecting portion that extends along a streamline from the open end to the connecting port.
• the intermediate pipe is configured as a hollow tubular body consisting of a plurality of hollow tubes connected by mutually detachable connecting means,
• the jetting means is configured as a hollow tubular body having a connecting portion having a connecting port communicating with the intermediate pipe at one end, and having a flow path therein extending from the connecting port to an opening provided at the tip.
• the present invention is characterized in that the above-mentioned fire blower is provided with a plurality of holes in the outer shell portion that constitutes the external shape of the blowing means.
• the present invention is characterized in that the above-mentioned fire blower is provided with a constriction portion that reduces the area of the flow path toward the opening provided at the tip end inside the blowout means.
• the fire blower according to the present invention is made of a metal material, it is resistant to heat and has the effect of being able to supply air near the source of the fire where it is desired to increase the force of the fire. Furthermore, when an antibacterial material such as brass is used, it is possible to maintain the sanitary condition of the blowing means that comes into contact with the mouth. Furthermore, since the blowing means is not used by holding it in the mouth, but by just touching the opening at the end with the lips, it has the effect that it can be used hygienically. Further, the blowing means for applying the lips has a large number of openings formed on the outer periphery of the outer body. This has the effect of preventing and reducing the backflow of hot air from the ejection means when the person inhales.
• FIG. 1 is an external perspective view of a fire blower according to the present embodiment.
• FIG. 2 is an external perspective view of the fire blower according to the present embodiment, viewed from another direction. It is a side view of an intermediate pipe. 4 is a sectional view of the intermediate pipe shown in FIG. 3.
• FIG. 3 is a side view of the blowing means.
• FIG. 6 is a sectional view of the blowing means shown in FIG. 5;
• FIG. 3 is a side view of the ejection means.
• FIG. 8 is a sectional view of the ejection means shown in FIG. 7;
• FIGS. 1 and 2 show external perspective views of a fire blower 1 according to the present embodiment.
• the fire blower 1 has a blowing means 2 used for blowing in the breath exhaled from the mouth, an intermediate pipe 3 through which the airflow generated by the exhaled breath passes, and a blowing means 4 through which the airflow that has passed through the intermediate pipe 3 is ejected. are doing.
• the intermediate pipe 3 is formed by connecting a plurality of hollow tubes 5, and the total length of the fire blower 1 can be changed according to the number of hollow tubes 5 used.
• a fire blower 1 having a total length of about 540 mm is configured, for example.
• FIG. 3 is a side view of the hollow tube 5 constituting the intermediate pipe 3
• FIG. 4 is a sectional view of the center of the hollow tube 5 in the longitudinal direction.
• the intermediate pipe 3 is formed as a hollow pipe having a female thread 10 at one end and a male thread 11 at the other end. It is formed by connecting two hollow tubes 5.
• the length of each hollow tube 5 is approximately 80 mm.
• a blowing means 2 is attached to a screw 10 constituting one end of the intermediate pipe 3, and a blowing means 4 is attached to a male screw 11 constituting the other end.
• FIG. 5 shows a side view of the blowing means 2
• FIG. 6 shows a central sectional view of the blowing means 2 in the longitudinal direction.
• the blowing means 2 has a hollow outer shell portion 14 having an external shape that approximates a truncated cone shape and whose external shape is changed in multiple steps. Note that this external shape may be formed into a truncated cone shape.
• the distal end has an outer diameter of approximately 30 to 35 mm, and is provided with a circular open end 12 constituting an inlet.
• the opening edge of the open end 12 is a portion that may come into contact with the lips, like the mouthpiece of a wind instrument, and is formed as a rounded edge without corners.
• the open end 12 is a part used as an inlet for blowing exhaled breath.
• connection part 13 with the intermediate pipe 3, which is provided with a male thread that can be screwed into the female thread 10 formed at the end of the intermediate pipe 3, and a connection port that communicates with the intermediate pipe 3.
• the inner diameter of the connecting portion 13 is approximately 14 mm.
• a plurality of circular holes 15 and 16 are formed on the peripheral wall surface of the outer shell part 14 constituting the blowing means 2 along three circumferential parts of the small diameter side, the middle part, and the large diameter side, the outer shape of which changes in multiple steps. , 17 are opened.
• the diameter of the circular hole 15 is 6 mm
• the diameter of the circular hole 16 is 8 mm
• the diameter of the circular hole 17 is 9 mm.
• FIG. 7 is a side view of the ejection means 4, and FIG. 8 is a longitudinal cross-sectional view of the ejection means 4.
• the ejection means 4 is a hollow tubular body having a connecting part formed of a female thread 18 that can be screwed into a male thread 11 formed at the tip of the intermediate pipe 3, and a connection port communicating with the intermediate pipe 3. It has a slightly warped outer shape.
• a circular opening 19 provided at the tip of the blowing means 4 serves as a blowing port through which the airflow blown from the blowing means 2 is released.
• a constriction portion 20 is provided which is formed so as to gradually reduce the area of the flow path along the flow path through which the air passes.
• the blowing means 2, the intermediate pipe 3, and the blowing means 4 that constitute the fire blower 1 described above are all made of a metal material, and in this embodiment, brass is adopted as an example of the most suitable metal material.
• Brass is a material that is resistant to deterioration due to oxidation and thermal deformation, and since it is a copper alloy, it is also an effective material for antibacterial effects.
• the blowing means 2 since the blowing means 2 is a part that comes into contact with the human mouth, it is a part where condensation from saliva and breath tends to adhere. For this reason, it is preferable that the material is easy to wipe off moisture and has an antibacterial effect, and in this embodiment, brass is used as the most suitable material.
• the intermediate pipe 3 is also made of antibacterial brass or other metal material, but multiple hollow pipes 5 are used for the purpose of easy cleaning and drying after use and to improve sanitary safety. It has a split structure that allows it to be used by detachably connecting the two.
• Blowing air using the blowing means 2 is not done by holding the entire blowing means 2 in your mouth, but by placing your lips on the opening edge of the end like the mouthpiece of a wind instrument, and using the gap formed by the upper and lower lips. This is done by blowing in air at a controlled flow rate.
• the exhaled air having a high flow rate takes in outside air from the opening in the peripheral wall surface, and the mixed air of exhaled air and outside air is sent into the intermediate pipe 3.
• the airflow that passes through the interior of the intermediate pipe 3 and is ejected from the ejection means 4 becomes a mixed air flow of exhaled breath in which oxygen is reduced and outside air in which oxygen is not reduced.
• the mixed air jetted from the jetting means 4 has a higher effect of increasing the force of the fire at the source of the fire than the jetting of breath alone.
• the blowing means 2 is applied to the lips and not held in the mouth, it is difficult for saliva to adhere to it during use, reducing the proliferation of bacteria and invasion of the oral cavity due to the adhesion of saliva. It is something that can be done.
• the fire blower 1 is used to blow air into the mouth by placing the pursed lips against the opening. In addition, it is difficult to breathe in when the mouth is not held in the mouth and the lips are placed against the open end 12, so when inhaling, it is necessary to separate the lips from the open end 12. Furthermore, even if the person inhales forcefully with his lips in contact with the open end 12, most of the inhaled air will flow through the circular holes 15, 16, and 17 formed in the outer shell portion 14. Since the fire blower 1 according to the present embodiment has the blowing means 2 having such characteristics, it has a structure that makes it difficult for the hot air from the blowing means 4 to flow backward when breathing. Even if the hot air flows back to the blowing means 2, it can be mixed with the air flowing in through the circular holes 15, 16, 17 formed in the outer shell 14, so it has the effect of lowering the temperature of the hot air that reaches the human body. It has become.
• the inner diameter of the intermediate pipe 3 is, for example, about 14 mm.
• the diameter of the opening 19 at the tip of the ejection means 4 is reduced to about 10 mm by the constriction part 20.
• the action of the throttle section 20 makes it possible to pressurize the mixed air of the exhaled breath and outside air and increase the flow velocity, making it possible to supply the mixed air to the fire source in a pinpoint manner.
• a spark is created by using a cut flame, a lighter, or matches to ignite ignition materials such as paper or thin dried wood chips or shavings. Materials that are easy to ignite will burn out quickly, so to prevent the fire from burning out, the igniting material is supplied and the flame is gradually increased to increase the strength of the flame. If too much air is supplied during this process, the wind pressure will extinguish the fire, so the amount of mixed air supplied must be adjusted.
• the fire blower 1 it is possible to adjust the air volume suitable for increasing the force of the fire depending on the strength of the breath, even though the air is taken in from outside. It blows gently when the spark is small, and increases the amount of heat by blowing harder as the flame grows, making it possible to efficiently transfer fire to firewood or charcoal quickly.
• the best heat source for cooking is a smoldering flame, but this is the state after the flame-producing combustion has subsided, and the temperature will gradually drop if left unattended. If it is desired to increase the calorific value of the bonfire to raise its temperature, it is necessary to supply air, but by using the fire blower 1, it becomes possible to supply air close to the combustion site. With this, it is possible to increase the firepower of the bonfire and increase the amount of heat generated. Furthermore, if there is a large amount of unburned portion remaining, it is possible to return the flame from a smoldering state to a burning state by continuing to supply air.
• the present invention can be used in a fire blower used to start a fire in a bonfire, fireplace, etc., or to promote combustion.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Toys (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)

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Citations (3)

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• 2022
  • 2022-05-25 JP JP2024522803A patent/JP7780778B2/ja active Active
  • 2022-05-25 WO PCT/JP2022/021419 patent/WO2023228325A1/ja not_active Ceased

Patent Citations (3)

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