JP7153608B2 - hydrogen torch - Google Patents

hydrogen torch Download PDF

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JP7153608B2
JP7153608B2 JP2019097467A JP2019097467A JP7153608B2 JP 7153608 B2 JP7153608 B2 JP 7153608B2 JP 2019097467 A JP2019097467 A JP 2019097467A JP 2019097467 A JP2019097467 A JP 2019097467A JP 7153608 B2 JP7153608 B2 JP 7153608B2
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hydrogen
heat exchanger
heat
circulation path
hydrogen tank
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JP2020190329A (en
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和人 松本
勇人 加藤
国彦 小池
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Iwatani Corp
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Iwatani Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C11/00—Use of gas-solvents or gas-sorbents in vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/45—Hydrogen technologies in production processes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Feeding And Controlling Fuel (AREA)

Description

この発明は、水素ガスを燃焼する水素トーチに関し、より詳しくは水素吸蔵合金に貯蔵した水素を用いる水素トーチに関する。 The present invention relates to a hydrogen torch that burns hydrogen gas, and more particularly to a hydrogen torch that uses hydrogen stored in a hydrogen storage alloy.

水素吸蔵合金の水素放出時には吸熱反応が生じる。吸熱反応によって水素吸蔵合金の温度が低下すると、水素放出のための反応が停滞してしまい、連続して水素を取り出そうとしても、水素を放出させることができない。このため、必要な流量の水素を連続して放出させるためには、水素吸蔵合金に対して外部から熱を供給する必要がある。 An endothermic reaction occurs when the hydrogen storage alloy releases hydrogen. When the temperature of the hydrogen-absorbing alloy drops due to the endothermic reaction, the reaction for releasing hydrogen stagnates, and hydrogen cannot be released even if an attempt is made to extract hydrogen continuously. Therefore, in order to continuously release hydrogen at a required flow rate, it is necessary to supply heat to the hydrogen storage alloy from the outside.

下記の特許文献１の図１５には、水素吸蔵合金を収容する水素タンクをヒートパネルによって加熱することが開示されている。つまり、火炎の近傍に設けられた伝熱部材と、伝熱部材の端部に連結されて水素タンクの周囲に設けられるカバー部材を備えている。火炎の熱は伝熱部材からカバー部材に伝わり、カバー部材はその熱を水素タンクに伝えて、水素タンクを加熱する。 FIG. 15 of Patent Document 1 below discloses that a hydrogen tank containing a hydrogen storage alloy is heated by a heat panel. That is, it has a heat transfer member provided in the vicinity of the flame, and a cover member connected to the end of the heat transfer member and provided around the hydrogen tank. The heat of the flame is transmitted from the heat transfer member to the cover member, and the cover member transmits the heat to the hydrogen tank to heat the hydrogen tank.

しかし、熱は伝熱部材からカバー部材を経て水素タンクに伝わり、水素タンクから水素タンク内の水素吸蔵合金に伝わる。このため、熱伝達のロスが生じる。また、水素吸蔵合金は前述のような迂遠な熱伝達によって加熱されるので、加熱の開始には時間がかかる。このため、早期に目的の水素流量を得るのが難しく、十分な熱伝達がなされる前に放出反応が停滞して、水素流量が著しく低下してしまうおそれがある。 However, heat is transferred from the heat transfer member to the hydrogen tank through the cover member, and then transferred from the hydrogen tank to the hydrogen storage alloy in the hydrogen tank. Therefore, heat transfer loss occurs. In addition, since the hydrogen storage alloy is heated by the roundabout heat transfer as described above, it takes time to start heating. For this reason, it is difficult to obtain the target hydrogen flow rate at an early stage, and the release reaction may be stagnant before sufficient heat transfer is achieved, resulting in a significant drop in the hydrogen flow rate.

特許第６１０５１３１号公報Japanese Patent No. 6105131

そこで、この発明は、水素タンク内の水素吸蔵合金への熱伝達のロスを低減し、速やかな加熱を可能にすることを主たる課題とする。 Therefore, the main object of the present invention is to reduce the loss of heat transfer to the hydrogen storage alloy in the hydrogen tank and to enable rapid heating.

そのための手段は、水素吸蔵合金を収容する水素タンクと、前記水素タンクから供給される水素を燃焼させるバーナを備えた水素トーチであって、前記水素タンクの内部に、加熱媒体を流す流路を有した熱交換器が備えられるとともに、前記熱交換器に、前記熱交換器に対して前記加熱媒体を循環させる循環路が接続され、前記循環路の一部に、前記バーナの熱を回収する熱回収部が形成された水素トーチである。 The means for that purpose is a hydrogen tank containing a hydrogen storage alloy and a hydrogen torch equipped with a burner for burning the hydrogen supplied from the hydrogen tank. The heat exchanger is connected to a circulation path for circulating the heating medium through the heat exchanger, and a part of the circulation path recovers the heat of the burner. A hydrogen torch with a heat recovery section.

この構成では、熱交換器の流路に流れる加熱媒体が、循環路の熱回収部においてバーナから回収した熱を水素タンク内の水素吸蔵合金に対して直接的に伝達して、水素吸蔵合金を加熱する。 In this configuration, the heating medium flowing through the flow path of the heat exchanger directly transfers the heat recovered from the burner in the heat recovery section of the circulation path to the hydrogen storage alloy in the hydrogen tank. heat up.

この発明によれば、水素タンクの中に備えられて水素吸蔵合金に接している熱交換器で水素吸蔵合金を直接的に加熱するので、熱伝達のロスを極力低減できる。また、加熱開始までの時間を短縮できる。このため水素吸蔵合金の加熱は、水素ガスの着火後に速やかに効率よく行われ、この結果、目的の水素流量を得られる。 According to this invention, since the hydrogen storage alloy is directly heated by the heat exchanger provided in the hydrogen tank and in contact with the hydrogen storage alloy, heat transfer loss can be reduced as much as possible. Moreover, the time until the start of heating can be shortened. Therefore, the hydrogen storage alloy is heated quickly and efficiently after the hydrogen gas is ignited, and as a result, the target hydrogen flow rate can be obtained.

水素トーチの燃焼状態の概略構成図。FIG. 2 is a schematic configuration diagram of a combustion state of a hydrogen torch; 水素トーチの内部構造を示す断面図。Sectional drawing which shows the internal structure of a hydrogen torch. 他の例に係る水素トーチの内部構造を示す断面図。Sectional drawing which shows the internal structure of the hydrogen torch which concerns on another example. 他の例に係る熱交換器の断面図。Sectional drawing of the heat exchanger which concerns on another example.

この発明を実施するための一形態を、以下図面を用いて説明する。 One mode for carrying out the present invention will be described below with reference to the drawings.

図１に水素トーチ１１の燃焼状態の概略を示す。この発明の水素トーチ１１は、燃焼させる水素ガスを水素吸蔵合金１２（図２参照）から取り出す構成であり、水素吸蔵合金１２を収容する水素タンク１３と、水素タンク１３から供給される水素（水素ガス）を燃焼させるバーナ１４を備えている。バーナ１４は水素トーチ１１の上方部に設けられており、水素トーチ１１は火炎Ｆを上方へあげる構造である。 FIG. 1 shows an outline of the combustion state of the hydrogen torch 11. As shown in FIG. A hydrogen torch 11 of the present invention is configured to take out hydrogen gas to be burned from a hydrogen storage alloy 12 (see FIG. 2). gas) is provided. The burner 14 is provided above the hydrogen torch 11, and the hydrogen torch 11 has a structure that raises the flame F upward.

水素を放出させるために、この水素トーチ１１は、水素タンク１３内の水素吸蔵合金１２に対して直接的に熱を供給する構成を採用している。また、熱は火炎Ｆを出すバーナ１４から取る構造である。 In order to release hydrogen, the hydrogen torch 11 employs a configuration in which heat is directly supplied to the hydrogen storage alloy 12 in the hydrogen tank 13 . Also, the heat is taken from the burner 14 that emits the flame F.

具体的に説明すると、水素トーチ１１は本体ケース１５の内部に、図２に示したように前述の水素タンク１３とバーナ１４のほかに、調圧弁１６と、循環路１７と、ポンプ１８と、バッテリ１９を備えている。 More specifically, the hydrogen torch 11 has, as shown in FIG. A battery 19 is provided.

本体ケース１５は、筒状をなす適宜の形状であり、火炎Ｆを出す開口部１５ａを上端に有している。開口部１５ａには、開口部１５ａを通気可能に塞ぐカバー部材２１と、カバー部材２１の下方で火炎Ｆに着色を行う着色部材２２が備えられている。カバー部材２１は、開口部１５ａを通気可能な形状であり、多数の貫通穴２１ａを有している。着色部材２２は金属線からなる網体２２ａと、網体２２ａの金属線の表面に付着されて炎色反応を呈する適宜の着色物質２２ｂで構成されている。 The main body case 15 has an appropriate cylindrical shape, and has an opening 15a for emitting the flame F at its upper end. The opening 15a is provided with a cover member 21 for blocking the opening 15a and a coloring member 22 below the cover member 21 for coloring the flame F. As shown in FIG. The cover member 21 has a shape that allows air to pass through the opening 15a, and has a large number of through holes 21a. The coloring member 22 is composed of a net body 22a made of metal wires and an appropriate coloring substance 22b that adheres to the surface of the metal wires of the net body 22a and exhibits a flame reaction.

着色部材２２の下方には前述したバーナ１４が備えられ、バーナ１４の下方には、調圧弁１６を介して前述した水素タンク１３が備えられる。 The above-described burner 14 is provided below the coloring member 22 , and the above-described hydrogen tank 13 is provided below the burner 14 via a pressure regulating valve 16 .

調圧弁１６は、開弁時に水素タンク１３から放出される水素ガスの圧力を所定値に安定させるものであり、減圧弁機能を有するとともに、水素ガスの圧力が一定以上に上がった場合にガスを放出する安全弁機能、ガスを止める遮断弁と流量を調節するオリフィスを備えている。 The pressure regulating valve 16 stabilizes the pressure of the hydrogen gas released from the hydrogen tank 13 when the valve is opened to a predetermined value, and has a pressure reducing valve function, and also releases gas when the pressure of the hydrogen gas rises above a certain level. It has a safety valve function to release, a shutoff valve to stop the gas and an orifice to adjust the flow rate.

水素タンク１３はアルミ等の金属材料で円筒状に形成され、水素ガス放出口１３ａを上端に有している。水素ガス放出口１３ａは調圧弁１６を経てバーナ１４に接続される。 The hydrogen tank 13 is made of a metal material such as aluminum and has a cylindrical shape, and has a hydrogen gas discharge port 13a at its upper end. The hydrogen gas discharge port 13a is connected to the burner 14 through the pressure regulating valve 16. As shown in FIG.

水素タンク１３の内部には、熱交換器３１と、水素を貯蔵させる前述の水素吸蔵合金１２が備えられる。熱交換器３１は、加熱媒体を流す流路を有しており、例えば銅管で構成される。熱交換器３１には、熱交換器３１に対して加熱媒体を循環させる循環路１７が接続され、その接続部分は水素タンク１３の下端部に相当する位置に設けられる。つまり、熱交換器３１は水素タンク１３の内部における下方寄りに固定され、水素タンク１３の下端部において循環路１７と接続される。 Inside the hydrogen tank 13, a heat exchanger 31 and the aforementioned hydrogen storage alloy 12 for storing hydrogen are provided. The heat exchanger 31 has a flow path through which a heating medium flows, and is composed of, for example, a copper tube. A circulation path 17 for circulating a heating medium to the heat exchanger 31 is connected to the heat exchanger 31 , and the connecting portion is provided at a position corresponding to the lower end of the hydrogen tank 13 . That is, the heat exchanger 31 is fixed in the lower portion inside the hydrogen tank 13 and connected to the circulation path 17 at the lower end portion of the hydrogen tank 13 .

図２に示した熱交換器３１は、１本の銅管で構成されており、熱交換器３１の端部が、循環路１７との接続部分である入口３２と出口３３である。つまり、熱交換器３１の一端が循環路１７からの入口３２であり、他端が循環路１７への出口３３である。 The heat exchanger 31 shown in FIG. 2 is composed of a single copper tube, and the ends of the heat exchanger 31 are an inlet 32 and an outlet 33 that are connected to the circulation path 17 . That is, one end of the heat exchanger 31 is the inlet 32 from the circuit 17 and the other end is the outlet 33 to the circuit 17 .

熱交換器３１は、入口３２から上へ直線状に延びる直線状部３５と、直線状部３５の上端から折り返して直線状部３５の周りで下へらせん状に曲がって出口３３に延びるらせん状部３６を有している。直線状部３５は流路を真っすぐにしており、らせん状部３６は流路をらせん状に曲げて道程を長くする。直線状部３５は、水素タンク１３の中心に位置しており、直線状部３５の長さは、水素タンク１３内に収まる適宜長さに設定される。らせん状部３６は、直線状部３５を中心にして、直線状部３５との間に適宜の間隔あけて形成されている。らせん状部３６と直線状部３５の間隔と、らせん状部３６のらせん間隔は、水素吸蔵合金１２の膨張収縮を考慮して適宜設定される。なお、本実施例では直線状部３５を入口側に、らせん状部３６を出口側としているが、これに限らず入口側をらせん状部に、出口側を直線状部に入れ替えてもよい。 The heat exchanger 31 has a linear portion 35 that extends linearly upward from the inlet 32 , and a spiral portion that bends downward from the upper end of the linear portion 35 and spirals downward around the linear portion 35 to extend to the outlet 33 . It has a portion 36 . The straight portion 35 straightens the flow path and the spiral portion 36 spirals the flow path to lengthen the path. The linear portion 35 is positioned at the center of the hydrogen tank 13 , and the length of the linear portion 35 is set appropriately so as to fit within the hydrogen tank 13 . The helical portion 36 is formed around the linear portion 35 with an appropriate gap between it and the linear portion 35 . The interval between the spiral portion 36 and the linear portion 35 and the spiral interval of the spiral portion 36 are appropriately set in consideration of the expansion and contraction of the hydrogen storage alloy 12 . In this embodiment, the straight portion 35 is on the inlet side and the spiral portion 36 is on the outlet side, but the inlet side may be replaced with the spiral portion and the outlet side with the straight portion.

水素吸蔵合金１２は、熱交換器３１を備えた水素タンク１３内に所定量収容され、収容された状態において、水素吸蔵合金１２は、熱交換器３１を構成する銅管の周面に接触する。換言すれば、熱交換器３１は水素吸蔵合金１２に接した状態で水素タンク１３内に備えられる。 A predetermined amount of the hydrogen storage alloy 12 is stored in a hydrogen tank 13 equipped with a heat exchanger 31, and in the stored state, the hydrogen storage alloy 12 contacts the peripheral surface of the copper pipe that constitutes the heat exchanger 31. . In other words, the heat exchanger 31 is provided inside the hydrogen tank 13 in contact with the hydrogen storage alloy 12 .

循環路１７は、熱交換器３１に対して加熱媒体を循環させる流路であり、管体で構成されている。循環路１７の一部には、バーナ１４の熱を回収する熱回収部１７ａが形成される。図２に示した循環路１７は、全体が銅管などの金属管で構成され、熱回収部１７ａはバーナ１４を取り巻くコイル状である。熱回収部１７ａのみを金属管で形成してもよい。本実施例では、熱回収部１７ａを火炎Ｆを取り巻くコイル状のものとして示したが、循環水の加熱・循環が適切にできれば熱回収部１７ａをバーナ１４の上方に配置してもよい。 The circulation path 17 is a flow path for circulating the heating medium with respect to the heat exchanger 31, and is configured by a tubular body. A heat recovery section 17 a for recovering heat from the burner 14 is formed in a part of the circulation path 17 . The circulation path 17 shown in FIG. 2 is entirely composed of a metal tube such as a copper tube, and the heat recovery section 17a has a coil shape surrounding the burner 14 . Only the heat recovery part 17a may be formed of a metal pipe. In this embodiment, the heat recovery part 17a is shown as a coil surrounding the flame F, but the heat recovery part 17a may be arranged above the burner 14 if the circulating water can be properly heated and circulated.

循環路１７と熱交換器３１の内部には加熱媒体として水が充填されており、この加熱媒体は循環路１７の一部に備えたポンプ１８によって循環される。ポンプ１８は本体ケース１５内の下端部に備えられるとよく、具体的には、熱交換器３１の出口３３の下方に備えられるとよい。本体ケース１５内の下端部には、ポンプ１８を駆動するための乾電池などのバッテリ１９が備えられる。 The circulation path 17 and the heat exchanger 31 are filled with water as a heating medium. The pump 18 may be provided at the lower end inside the main body case 15 , specifically, below the outlet 33 of the heat exchanger 31 . A battery 19 such as a dry battery for driving the pump 18 is provided at the lower end inside the main body case 15 .

以上のように構成された水素トーチ１１では、調圧弁１６に設けられた図示しないバルブを開弁して水素ガスがバーナ１４に送られると、着火により火炎Ｆが発生する。一方で、着火に先立って、または着火後すぐにポンプ１８を駆動すると、加熱媒体が一方向に循環する。この循環において、循環路１７の熱回収部１７ａでは、火炎Ｆを発するバーナ１４の熱で加熱媒体が加温され、加温された加熱媒体が熱交換器３１に入る。つまり、水素タンク１３内に入り、水素タンク１３内の水素吸蔵合金１２に対して直接的に熱を供給する。熱の供給を受けた水素吸蔵合金１２は、水素ガスを連続して放出する。 In the hydrogen torch 11 configured as described above, when a valve (not shown) provided in the pressure regulating valve 16 is opened to send hydrogen gas to the burner 14, a flame F is generated by ignition. On the other hand, driving the pump 18 prior to ignition or immediately after ignition causes the heating medium to circulate in one direction. In this circulation, in the heat recovery section 17 a of the circulation path 17 , the heating medium is heated by the heat of the burner 14 that emits the flame F, and the heated heating medium enters the heat exchanger 31 . That is, it enters the hydrogen tank 13 and directly supplies heat to the hydrogen storage alloy 12 in the hydrogen tank 13 . The hydrogen storage alloy 12 supplied with heat continuously releases hydrogen gas.

熱交換器３１の出口３３から出た加熱媒体は、ポンプ１８を通って、再び熱回収部１７ａに至って加温される。このような循環で、水素吸蔵合金１２は連続して加熱され水素放出が継続される。しかも、加熱媒体としての水は比熱容量が高く、温まると冷めにくいうえに、熱伝導率が大きいので水素吸蔵合金１２の加熱は効率よく行える。そのうえ、加熱媒体が万一漏れた場合でも、水であるので安全である。 The heating medium coming out of the outlet 33 of the heat exchanger 31 passes through the pump 18 and reaches the heat recovery section 17a again to be heated. With such circulation, the hydrogen storage alloy 12 is continuously heated and continues to release hydrogen. In addition, water as a heating medium has a high specific heat capacity, is difficult to cool down when heated, and has high thermal conductivity, so that the hydrogen storage alloy 12 can be efficiently heated. Moreover, even if the heating medium leaks, it is safe because it is water.

このため、図１に仮想線で示したように着火直後は水素流量が少なくて小さな火炎Ｆでも、その火炎Ｆが生じる熱は熱回収部１７ａで回収されてすぐに水素吸蔵合金１２の加熱に使用される。この結果、所望の水素流量が得られ、図１に実線で示したような大きな火炎Ｆを発生させることができる。 Therefore, as shown by the phantom line in FIG. 1, even if the flame F is small due to a small hydrogen flow immediately after ignition, the heat generated by the flame F is recovered by the heat recovery part 17a and immediately used to heat the hydrogen-absorbing alloy 12. used. As a result, a desired hydrogen flow rate can be obtained, and a large flame F can be generated as indicated by the solid line in FIG.

水素吸蔵合金１２の加熱は、加熱媒体を用いて直接的に行うので、熱伝達のロスを低減できる。また、着火から加熱開始までの時間が短い。このため、水素吸蔵合金１２は着火後すみやかに効率よく加熱され、必要な水素流量を連続して得ることができる。 Heating of the hydrogen-absorbing alloy 12 is performed directly using a heating medium, so heat transfer loss can be reduced. Also, the time from ignition to the start of heating is short. Therefore, the hydrogen-absorbing alloy 12 is quickly and efficiently heated after ignition, and the required hydrogen flow rate can be obtained continuously.

また、水素吸蔵合金１２に接する熱交換器３１は、１本の銅管で構成され、らせん状部３６を有する構成である。特に、熱交換器３１は、直線状部３５とらせん状部３６を備えて、入り口側に設けた直線状部３５の周りに隙間をあけて、出口側に設けたらせん状部３６を備えた構造であるので、熱交換がなされる範囲を広く得ることができる。 Also, the heat exchanger 31 in contact with the hydrogen storage alloy 12 is composed of a single copper tube and has a helical portion 36 . In particular, the heat exchanger 31 has a linear portion 35 and a spiral portion 36, with a gap around the linear portion 35 provided on the inlet side and a spiral portion 36 provided on the outlet side. Because of the structure, a wide range of heat exchange can be obtained.

しかも、水素タンク１３内に熱交換器３１を備えても、直線状部３５とらせん状部３６を有する熱交換器３１は、水素吸蔵合金１２の流動性を維持する。このため、水素吸蔵合金１２の交換などの作業は容易である。 Moreover, even if the heat exchanger 31 is provided in the hydrogen tank 13 , the heat exchanger 31 having the linear portion 35 and the spiral portion 36 maintains the fluidity of the hydrogen storage alloy 12 . Therefore, work such as replacement of the hydrogen storage alloy 12 is easy.

また、水素吸蔵合金１２を加熱するための熱源はバーナ１４であるので、別途に熱源を設ける必要はなく、構成を簡素にできる。 Moreover, since the heat source for heating the hydrogen storage alloy 12 is the burner 14, there is no need to provide a separate heat source, and the configuration can be simplified.

以下、他の例について説明する。この説明において、前述の構成と同一の部分には同一の符号を付してその詳しい説明を省略する。 Other examples will be described below. In this description, the same reference numerals are assigned to the same parts as those in the above configuration, and detailed description thereof will be omitted.

図３に示した水素トーチ１１は、熱交換器３１が、外周面にフィン３７を有するものである。すなわち熱交換器３１は、入口３２から延びる内管３８と、出口３３に延びる外管３９を備え、径方向の内外に二重の流路を有する二重管構造であり、水素吸蔵合金１２に接する外管３９の外周面にフィン３７が形成されている。フィン３７は外管３９の略全体にらせん状に設けられている。 In the hydrogen torch 11 shown in FIG. 3, the heat exchanger 31 has fins 37 on the outer peripheral surface. That is, the heat exchanger 31 has an inner tube 38 extending from the inlet 32 and an outer tube 39 extending to the outlet 33, and has a double-tube structure having double channels inside and outside in the radial direction. A fin 37 is formed on the outer peripheral surface of the outer tube 39 in contact therewith. The fins 37 are spirally provided over substantially the entire outer tube 39 .

熱交換器３１以外の構成は、前述の水素トーチ１１と同じである。 The configuration other than the heat exchanger 31 is the same as the hydrogen torch 11 described above.

このような構成の水素トーチ１１においても、前述と同様の作用効果を有する。 The hydrogen torch 11 having such a configuration also has the same effect as described above.

図４は、水素タンク１３内に備えられる他の例に係る熱交換器３１のフィン３７を示している。このフィン３７は、図３の熱交換器３１と同様に二重管構造をなす外管３９の外周面に設けられており、フィン３７の形状は外管３９の長手方向に沿って延びる板状である。複数のフィン３７は、外管３９の外周面に放射状に配設されている。 FIG. 4 shows fins 37 of a heat exchanger 31 according to another example provided inside the hydrogen tank 13 . The fins 37 are provided on the outer peripheral surface of the outer tube 39 having a double-tube structure in the same manner as the heat exchanger 31 of FIG. is. A plurality of fins 37 are radially arranged on the outer peripheral surface of the outer tube 39 .

この構成の熱交換器３１を備えた水素タンク１３では、前述と同様の作用効果を有する。特に、フィン３７は水素タンク１３を横断する方向に延びておらずに縦に延びているので、水素吸蔵合金１２の流動性をより良好にすることができる。 The hydrogen tank 13 having the heat exchanger 31 of this configuration has the same effects as described above. In particular, since the fins 37 do not extend across the hydrogen tank 13 but extend vertically, the fluidity of the hydrogen storage alloy 12 can be improved.

１１…水素トーチ
１２…水素吸蔵合金
１３…水素タンク
１４…バーナ
１７…循環路
１７ａ…熱回収部
３１…熱交換器
３２…入口
３３…出口
３５…直線状部
３６…らせん状部
３７…フィン
３８…内管
３９…外管 DESCRIPTION OF SYMBOLS 11... Hydrogen torch 12... Hydrogen storage alloy 13... Hydrogen tank 14... Burner 17... Circulation path 17a... Heat recovery part 31... Heat exchanger 32... Inlet 33... Outlet 35... Linear part 36... Spiral part 37... Fin 38 ... Inner tube 39 ... Outer tube

Claims (6)

水素吸蔵合金を収容する水素タンクと、前記水素タンクから供給される水素を燃焼させるバーナを備えた水素トーチであって、
前記水素タンクの内部に、加熱媒体を流す流路を有した熱交換器が備えられるとともに、
前記熱交換器に、前記熱交換器に対して前記加熱媒体を循環させる循環路が接続され、
前記循環路の一部に、前記バーナの熱を回収する熱回収部が形成された
水素トーチ。 A hydrogen torch comprising a hydrogen tank containing a hydrogen storage alloy and a burner for burning hydrogen supplied from the hydrogen tank,
A heat exchanger having a flow path for flowing a heating medium is provided inside the hydrogen tank,
a circulation path for circulating the heating medium with respect to the heat exchanger is connected to the heat exchanger;
A hydrogen torch in which a heat recovery section for recovering heat of the burner is formed in a part of the circulation path. 前記熱交換器が、前記流路をらせん状に曲げるらせん状部を有する
請求項１に記載の水素トーチ。 2. A hydrogen torch according to claim 1, wherein said heat exchanger has a helical portion for helically bending said flow path. 前記熱交換器が、外周面にフィンを有する
請求項１または請求項２に記載の水素トーチ。 3. The hydrogen torch according to claim 1, wherein the heat exchanger has fins on its outer peripheral surface. 前記熱交換器が、前記水素タンクの下端部に相当する位置に、前記循環路からの入口と前記循環路への出口を有し、
前記熱交換器が、前記水素タンクの下端部から上へ直線状に延びる直線状部と、前記直線状部の上端から折り返して前記直線状部の周りで下へ向けてらせん状に曲がって前記水素タンクの下端部に延びるらせん状部を有する
請求項１に記載の水素トーチ。 the heat exchanger has an inlet from the circulation path and an outlet to the circulation path at a position corresponding to the lower end of the hydrogen tank;
The heat exchanger has a linear portion that extends linearly upward from the lower end of the hydrogen tank, and a linear portion that is folded back from the upper end of the linear portion and spirally bent downward around the linear portion. 2. A hydrogen torch according to claim 1, having a helical portion extending to the lower end of the hydrogen tank. 前記熱交換器が、前記水素タンクの下端部に相当する位置に、前記循環路からの入口と前記循環路への出口を有し、
前記熱交換器が、前記入口から延びる内管と、前記出口に延びる外管を備え、径方向の内外に二重の前記流路を有する二重管構造であるとともに、
前記外管の外周面にフィンが形成された
請求項１に記載の水素トーチ。 the heat exchanger has an inlet from the circulation path and an outlet to the circulation path at a position corresponding to the lower end of the hydrogen tank;
The heat exchanger has a double-tube structure including an inner tube extending from the inlet and an outer tube extending to the outlet, and having double flow paths inside and outside in the radial direction,
2. A hydrogen torch according to claim 1, wherein fins are formed on the outer peripheral surface of said outer tube. 前記熱回収部が金属管で構成されるとともに、前記バーナを取り巻くコイル状に形成された
請求項１から請求項５のうちいずれか一項に記載の水素トーチ。 6. The hydrogen torch according to any one of claims 1 to 5, wherein the heat recovery part is composed of a metal tube and formed in a coil shape surrounding the burner.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000106003A (en) 1998-09-29 2000-04-11 Iwatani Internatl Corp Torch
US20130288186A1 (en) 2012-04-30 2013-10-31 Ron White Heat isolating torch
JP2015121346A (en) 2013-12-24 2015-07-02 カヤバ工業株式会社 Heat exchanger and hydrogen storage unit
JP2017017029A (en) 2015-06-30 2017-01-19 株式会社東芝 Hydrogen torch
JP2018014202A (en) 2016-07-20 2018-01-25 株式会社東芝 Hydrogen torch
JP2019016541A (en) 2017-07-07 2019-01-31 株式会社東芝 Hydrogen torch

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000106003A (en) 1998-09-29 2000-04-11 Iwatani Internatl Corp Torch
US20130288186A1 (en) 2012-04-30 2013-10-31 Ron White Heat isolating torch
JP2015121346A (en) 2013-12-24 2015-07-02 カヤバ工業株式会社 Heat exchanger and hydrogen storage unit
JP2017017029A (en) 2015-06-30 2017-01-19 株式会社東芝 Hydrogen torch
JP2018014202A (en) 2016-07-20 2018-01-25 株式会社東芝 Hydrogen torch
JP2019016541A (en) 2017-07-07 2019-01-31 株式会社東芝 Hydrogen torch

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