JP2014092313A - Fire breathing cylinder - Google Patents

Fire breathing cylinder Download PDF

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Publication number
JP2014092313A
JP2014092313A JP2012242556A JP2012242556A JP2014092313A JP 2014092313 A JP2014092313 A JP 2014092313A JP 2012242556 A JP2012242556 A JP 2012242556A JP 2012242556 A JP2012242556 A JP 2012242556A JP 2014092313 A JP2014092313 A JP 2014092313A
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air
cylinder
fire
blowing
outlet
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Japanese (ja)
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Minoru Kamiya
稔 神谷
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Abstract

PROBLEM TO BE SOLVED: To provide a fire breathing cylinder in which an air amount blown out of a fire breathing port is increased.SOLUTION: This invention relates to a fire breathing cylinder 11 used for supplying air to material to be ignited to make fire at the material, in which the fire breathing cylinder 11 is a cylinder having a prescribed length, and has a breathing port 12 at one end and a blowing-out port 13 at the other end. A location along an inner peripheral surface 21 inside the cylinder measured from the blowing-out port 13 by a prescribed length is provided with a knot part 14 for blocking a flow of air. The central part of the knot part 14 is formed with small holes 15, and a location near the blowing-out port 13 near the knot part 14 is formed with an air inlet hole 16 for use in flowing air from outside the cylinder.

Description

本発明は、被着火材料に空気を供給して火を吹きおこすための火吹き筒に関するものであり、更に詳しくは、吹き出し口から吹き出す風量を増大させた火吹き筒に関するものである。   The present invention relates to a fire blowing cylinder for supplying air to an ignited material to generate fire, and more particularly to a fire blowing cylinder having an increased amount of air blown from a blowing outlet.

従来、火を吹きおこすのに用いる器具としては、次のような構成の火吹き竹が知られている。この火吹き竹は、長さが約30〜60cm程度の竹筒からなり、一端に息の吹き込み口を有し、他端に節を残しており、この節の中央部に小孔が形成されている(特許文献1参照)。   2. Description of the Related Art Conventionally, fire-blown bamboo having the following configuration is known as an instrument used for blowing fire. This fire-blown bamboo consists of a bamboo cylinder about 30-60 cm in length, has a breath-inlet at one end, leaves a node at the other end, and has a small hole at the center of this node (patent) Reference 1).

このような構成の火吹き竹は、吹き込み口から息を吹き込んで、小孔から空気を勢いよく吹き出して使用し、例えばキャンプ場のかまど等で、炭や薪等の被着火材料に空気(酸素)を供給して火を吹きおこすのに用いる。   The fire-bamboo with such a structure is used by blowing air from the air inlet and blowing out air from a small hole. For example, in a campground oven, air (oxygen) is applied to an ignition material such as charcoal or firewood. Used to supply fire.

実開平5−35839号公報(図1)Japanese Utility Model Publication No. 5-35839 (FIG. 1)

この従来例の火吹き竹においては、吹き込み口から息を吹き込んだ空気の量だけが、小孔から吹き出す風量であり、吹き出し量が限られるので、空気の供給効率が低いという欠点を有している。   In the conventional fire-blown bamboo, only the amount of air blown from the blowing port is the amount of air blown from the small holes, and the amount of blown air is limited, so that the air supply efficiency is low.

一方、空気を供給するための器具としては、ふいごが知られているが、ふいごは、器具が大きくなって重量も嵩み、キャンプ場等の野外に持ち運ぶのには適さないという欠点がある。   On the other hand, a bellows is known as a device for supplying air. However, a bellows has a drawback that it is large and heavy, and is not suitable for carrying it outdoors such as a campsite. is there.

従って、従来例における火吹き竹においては、小孔から吹き出す風量を、吹き込んだ息の量以上に増大させて、空気の供給を効率的に行うことに解決しなければならない課題を有している。   Therefore, the fire-blown bamboo in the conventional example has a problem that must be solved by increasing the amount of air blown from the small holes to be larger than the amount of breath blown to efficiently supply air.

前記従来例の課題を解決する具体的手段として本発明は、被着火材料に空気を供給して火を吹きおこすのに用いる火吹き筒であって、該火吹き筒は、所要長さの筒体で、一端に息の吹き込み口を有し、他端に吹き出し口を有しており、該吹き出し口から所定長さ筒内に入った内周面に沿った部位には、空気の流れを阻害する節部を設け、該節部の中央部には小孔が形成され、該節部の近傍の前記吹き出し口寄りの部位には、筒外から空気を流入させる空気流入孔を形成したことを特徴とする火吹き筒を提供するものである。   As a specific means for solving the problems of the conventional example, the present invention is a fire blowing cylinder used for blowing air by supplying air to an ignition material, and the fire blowing cylinder is a cylinder of a required length. The body has a breath inlet at one end and a blow outlet at the other end, and a portion of the body along the inner peripheral surface that enters the cylinder for a predetermined length from the blow outlet has an air flow. An obstructing node was provided, a small hole was formed in the center of the node, and an air inflow hole for allowing air to flow in from the outside of the cylinder was formed near the outlet near the node. The present invention provides a fire-blowing tube characterized by the above.

また、前記吹き込み口から息を吹き込んだときに、前記小孔から前記吹き出し口の間に渡って空気流路が形成されると共に、該空気流路と前記空気流入孔との間に減圧領域が形成され、該減圧領域に前記空気流入孔から空気が流入し、該空気が前記吹き出し口から吹き出す構成であること、;
を含むものである。
An air flow path is formed between the small hole and the blow-out opening when breath is blown from the blow-in opening, and a reduced pressure region is formed between the air flow path and the air inflow hole. Formed, air flows into the decompression region from the air inlet hole, and the air blows out from the outlet;
Is included.

本発明に係る火吹き筒は、吹き込み口から息(空気)を吹き込んだときに、小孔から吹き出した息(空気)が周囲の空気を抱え込んで付勢されると共に、小孔から吹き出し口の間に渡って空気流路が形成される。そして、空気流路と空気流入孔との間に瞬時に減圧(負圧)領域が形成され、減圧(負圧)領域に空気流入孔から外部の空気が流入し、この空気が吹き出し口から吹き出す。従って、吹き込んだ息の量以上に増大した空気が吹き出し口から吹き出すこととなり、空気の供給が効率的に行えるという優れた効果を奏する。   The fire blowing cylinder according to the present invention, when breath (air) is blown from the blowing port, the breath (air) blown out from the small hole is entrained and energized by surrounding air, and from the small hole to the blowing port. An air flow path is formed between them. A depressurized (negative pressure) region is instantaneously formed between the air flow path and the air inflow hole, and external air flows from the air inflow hole into the depressurized (negative pressure) region, and this air blows out from the outlet. . Therefore, air that has increased in excess of the amount of breath that has been blown out is blown out from the outlet, and the air can be supplied efficiently.

本発明に係る火吹き筒11の正面図である。It is a front view of the fired pipe 11 which concerns on this invention. 図1のA−A線断面図である。It is the sectional view on the AA line of FIG. 火吹き筒11の内部の空気の流れを略示的に示す断面図である。FIG. 3 is a cross-sectional view schematically showing the flow of air inside a fired tube 11.

次に、本発明の実施の形態について図面を参照しながら説明する。まず、図1において、符号11は火吹き筒を示し、この火吹き筒11は、所要長さの筒体で、一端に息の吹き込み口12を有し、他端に空気の吹き出し口13を有している。   Next, embodiments of the present invention will be described with reference to the drawings. First, in FIG. 1, reference numeral 11 denotes a fire blowing cylinder. The fire blowing cylinder 11 is a cylinder having a required length, and has a breath inlet 12 at one end and an air outlet 13 at the other end. Have.

火吹き筒11は、金属製、例えばアルミ製であって、パイプ形状に形成されており、その長さは約30〜60cm程度であり、直径は約1〜4cm程度である。   The fire blowing cylinder 11 is made of metal, for example, aluminum, and is formed in a pipe shape. The length is about 30 to 60 cm, and the diameter is about 1 to 4 cm.

火吹き筒11の材質は、金属製以外には、合成樹脂製、木製、竹製、あるいは厚紙製等であっても構わないが、剛性を有して、多少の耐火性を備えていることが望ましい。   The material of the fire-blowing cylinder 11 may be made of synthetic resin, wooden, bamboo, or cardboard other than metal, but has rigidity and has some fire resistance. Is desirable.

吹き出し口13から所定長さ、例えば約4〜10cm程度筒内に入った内周面21に沿った部位には、図1及び図2に示すように、筒内部を閉塞する状態で節部14が設けられている。この節部14は、空気の流れを阻害する役目を果たす。節部14の中央部には、約1mm程度の小孔15が形成されている。   As shown in FIGS. 1 and 2, the node portion 14 is closed at a portion along the inner peripheral surface 21 that has entered the cylinder at a predetermined length, for example, about 4 to 10 cm from the outlet 13. Is provided. The node portion 14 serves to inhibit the air flow. A small hole 15 of about 1 mm is formed at the center of the node 14.

節部14の近傍の吹き出し口13寄りの部位、換言すれば、当該吹き出し口13から約3〜9cm程度筒内に入った部位には、図1及び図3に示すように、筒の外周に沿って空気流入孔16が形成されている。この空気流入孔16は、適宜の大きさであって、筒の外周に沿って複数箇所、望ましくは3箇所程度設けるのがよい。   As shown in FIG. 1 and FIG. 3, a part near the outlet 13 near the outlet 14, in other words, a part about 3 to 9 cm from the outlet 13 on the outer periphery of the cylinder. An air inflow hole 16 is formed along. The air inflow holes 16 have an appropriate size, and are preferably provided at a plurality of positions, desirably about three positions along the outer periphery of the cylinder.

このような火吹き筒11は、吹き込み口12から息(空気)20を吹き込んだときに、小孔15から吹き出した息(空気)20が周囲の空気を抱え込んで付勢されると共に、小孔15から吹き出し口13の間に渡って空気流路17が形成される。そして、空気流路17と空気流入孔16との間に瞬時に減圧(負圧)領域18が形成されて、減圧(負圧)領域18に空気流入孔16から外部の空気19が流入し、この空気19が吹き出し口13から吹き出す構成である(図3参照)。   When such a fire blowing cylinder 11 blows in the breath (air) 20 from the blowing port 12, the breath (air) 20 blown out from the small hole 15 encloses the surrounding air and is urged. An air flow path 17 is formed between 15 and the outlet 13. Then, a decompression (negative pressure) region 18 is instantaneously formed between the air flow path 17 and the air inflow hole 16, and external air 19 flows into the decompression (negative pressure) region 18 from the air inflow hole 16, The air 19 is blown out from the outlet 13 (see FIG. 3).

以上のように構成される火吹き筒11は、空気流入孔16から減圧(負圧)領域18に外部の空気19が流入して、その空気19が吹き出し口13から吹き出すので、吹き込んだ息20の量以上に増大した空気19が吹き出し口13から吹き出すこととなり、空気の供給が効率的に行えるのである(図3参照)。   In the fire blowing cylinder 11 configured as described above, the external air 19 flows from the air inflow hole 16 into the reduced pressure (negative pressure) region 18 and the air 19 blows out from the blowout port 13, so that the breath 20 that has been blown in Thus, the air 19 increased beyond the above amount is blown out from the air outlet 13 and the air can be supplied efficiently (see FIG. 3).

11 火吹き筒
12 吹き込み口
13 吹き出し口
14 節部
15 小孔
16 空気流入孔
17 空気流路
18 減圧(負圧)領域
19 外部の空気
20 息(空気)
21 内周面
DESCRIPTION OF SYMBOLS 11 Fire blowing cylinder 12 Air inlet 13 Air outlet 14 Node part 15 Small hole 16 Air inflow hole 17 Air flow path 18 Depressurization (negative pressure) area | region 19 External air 20 Breath (air)
21 Inner peripheral surface

Claims (2)

被着火材料に空気を供給して火を吹きおこすのに用いる火吹き筒であって、
該火吹き筒は、所要長さの筒体で、一端に息の吹き込み口を有し、他端に吹き出し口を有しており、
該吹き出し口から所定長さ筒内に入った内周面に沿った部位には、空気の流れを阻害する節部を設け、
該節部の中央部には小孔が形成され、
該節部の近傍の前記吹き出し口寄りの部位には、筒外から空気を流入させる空気流入孔を形成したこと
を特徴とする火吹き筒。
A fire cannon used to blow air by supplying air to an ignited material,
The fire blowing cylinder is a cylinder of a required length, has a breath blowing port at one end, and has a blowing port at the other end,
A portion along the inner peripheral surface that has entered the cylinder for a predetermined length from the outlet is provided with a node that inhibits the flow of air,
A small hole is formed in the center of the node,
An air inflow hole for allowing air to flow in from outside the cylinder is formed in a portion near the outlet near the node.
前記吹き込み口から息を吹き込んだときに、前記小孔から前記吹き出し口の間に渡って空気流路が形成されると共に、該空気流路と前記空気流入孔との間に減圧領域が形成され、該減圧領域に前記空気流入孔から空気が流入し、該空気が前記吹き出し口から吹き出す構成であること
を特徴とする請求項1に記載の火吹き筒。
When breath is blown from the air inlet, an air flow path is formed from the small hole to the air outlet, and a reduced pressure region is formed between the air flow path and the air inlet hole. The fire blowing cylinder according to claim 1, wherein air flows into the decompression region from the air inflow hole, and the air blows out from the outlet.
JP2012242556A 2012-11-02 2012-11-02 Fire breathing cylinder Pending JP2014092313A (en)

Priority Applications (1)

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023228325A1 (en) * 2022-05-25 2023-11-30 株式会社田中金属製作所 Fire blower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023228325A1 (en) * 2022-05-25 2023-11-30 株式会社田中金属製作所 Fire blower

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