JP2000028112A - Liquid fuel combustion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive reduction of preheating time and suppression of tar production and clogging with the produced tar in a vaporization part of a liquid fuel combustion device. SOLUTION: An excitation coil 23 wound around an outer periphery side of a vaporization part 14 comprising an outer pipe 15, a multiply-perforated pipe 16 and a shaft 17 sequentially arranged from outside to inside and a fuel supply part 19 to be disposed in a magnetic field are provided for heating, and the outer pipe 15 of the vaporization part 14, the multiply-perforated pipe 16, the shaft 17 and the fuel supply part 19 are made to undergo self-heating by induction current so that temperature rising speed of the vaporization part 14 is shortened. The multiple-perforated pipe 16 is heated to an inner peripheral side in a radial direction and a favorable temperature distribution is attained so that vaporization is enhanced and production of tar is suppressed. Simultaneously, the fuel supply part 19 is heated by the induction current and a fuel supply part 19 side to which a liquid fuel having a low temperature is supplied can be heated to a high temperature so that vaporization is promoted in a whole region of the perforated pipe 16 and the tar is dispersed and accumulated in a whole region within a perforated pipe 18 and clogging with the tar is suppressed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は液体燃料燃焼装置の
特に燃料の気化部に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid fuel combustion apparatus, and more particularly to a fuel vaporization section.

【０００２】[0002]

【従来の技術】従来この種の燃焼装置は、特開平８−６
８５０９号公報に示されているようなものが提案されて
いた。これを図６を用いて説明する。2. Description of the Related Art Conventionally, this type of combustion apparatus is disclosed in
Japanese Patent Application Laid-Open No. 8509 has proposed such a device. This will be described with reference to FIG.

【０００３】図中、１は気化部でその上部に円形のバー
ナ受け座２を設け、前記バーナ受け座２のほぼ中央にノ
ズル部３を配置し、バーナ受け座２とノズル部３の間に
燃焼用空気を供給する開口部４を設けてある。そしてノ
ズル部３に連通する連通口５を介して円筒状の気化室６
を形成し、気化室６内には燃料の気化を促進するための
気化素子７が、またノズル部３の反対側の端部には燃料
を供給する給油口８ａを有した給油管８が設けてある。
そして気化部１の気化室６の反対側のバーナ受け座２の
下側の約半周に沿うようにＵ字型のヒータ９が配設して
ある。１０は混合管で多数の炎孔１１を穿設した燃焼部
１２とともにバーナ受け座２の上部に載置してある。[0003] In the drawing, reference numeral 1 denotes a vaporizing section, on which a circular burner receiving seat 2 is provided, and a nozzle portion 3 is disposed substantially at the center of the burner receiving seat 2. An opening 4 for supplying combustion air is provided. A cylindrical vaporizing chamber 6 is formed through a communication port 5 communicating with the nozzle portion 3.
And a vaporizing element 7 for promoting vaporization of fuel is provided in the vaporizing chamber 6, and a fuel supply pipe 8 having a fuel supply port 8 a for supplying fuel is provided at an end opposite to the nozzle 3. It is.
A U-shaped heater 9 is provided along the lower half of the burner seat 2 on the opposite side of the vaporizing chamber 6 of the vaporizing section 1. Reference numeral 10 denotes a mixing tube mounted on the burner receiving seat 2 together with a combustion section 12 having a large number of flame holes 11 formed therein.

【０００４】上記構成において、ヒータ９により所定温
度まで気化部１が加熱されると給油管８の給油口８ａを
介して液体燃料は燃料供給手段１３により供給され、高
温の気化素子７内で燃料が気化を開始する。気化室６で
気化した燃料ガスは連通口５を介してノズル部３より混
合管１０内に噴出する。噴出した燃料ガスはエゼクタ効
果により燃焼用の１次空気を誘引し混合管１０内で混合
されて混合気となり燃焼部１２に穿設した炎孔１１より
噴出して燃焼する。そして燃焼により発生した燃焼排ガ
スは空気と混合して温風となり暖房などに使用される。
燃焼を開始すると燃焼熱で高温に加熱された受熱フラン
ジ２ａからバーナ受け座２を介して気化室を伝熱加熱す
るためにヒータ９による加熱が不要となり、自己の燃焼
熱で燃料を気化しながら燃焼を継続する。In the above configuration, when the vaporizer 1 is heated to a predetermined temperature by the heater 9, the liquid fuel is supplied by the fuel supply means 13 through the fuel supply port 8 a of the fuel supply pipe 8, Begins to evaporate. The fuel gas vaporized in the vaporization chamber 6 is jetted from the nozzle 3 into the mixing pipe 10 through the communication port 5. The ejected fuel gas attracts primary air for combustion by the ejector effect and is mixed in the mixing pipe 10 to become an air-fuel mixture, and is ejected from a flame hole 11 formed in a combustion section 12 to burn. Then, the combustion exhaust gas generated by the combustion is mixed with air to become warm air and used for heating or the like.
When the combustion is started, the heat from the heat receiving flange 2a, which has been heated to a high temperature by the combustion heat, is used to heat the vaporization chamber through the burner receiving seat 2, so that the heating by the heater 9 becomes unnecessary, and the fuel is vaporized by its own combustion heat. Continue burning.

【０００５】また、実開平６−３０６２０号公報に記載
されているように、気化部を高周波誘導加熱装置によっ
て加熱する方法が提案されている。Further, as described in Japanese Utility Model Laid-Open Publication No. Hei 6-30620, there has been proposed a method of heating a vaporizing section by a high-frequency induction heating device.

【０００６】また特開平７−４８１２８号公報において
は、高周波誘導加熱の発熱体として水素貯蔵合金の中心
部に金属棒を設けた構成が提案されている。Japanese Patent Laid-Open No. 7-48128 proposes a configuration in which a metal rod is provided at the center of a hydrogen storage alloy as a heating element for high-frequency induction heating.

【０００７】[0007]

【発明が解決しようとする課題】しかしながら、特開平
８−６８５０９号公報に記載されている構成の燃焼装置
は、燃焼開始時に気化部を加熱するためにシーズヒータ
を使用し、シーズヒータで発生した熱を気化部１の金属
部を介して燃料を気化するための気化素子７を加熱する
間接加熱方式になっている。したがってヒータ９に通電
してから気化素子７が燃料の気化可能温度に到達するま
での時間が長くなるという課題があった。However, the combustion apparatus having the structure described in Japanese Patent Application Laid-Open No. Hei 8-68509 uses a sheathed heater to heat the vaporizing portion at the start of combustion, and the generation of the sheathed heater occurs. An indirect heating method of heating a vaporizing element 7 for vaporizing fuel through a metal portion of the vaporizing section 1 is used. Therefore, there is a problem that the time from when the heater 9 is energized to when the vaporizing element 7 reaches the fuel vaporizable temperature becomes long.

【０００８】また、燃焼開始時にヒータ９から気化素子
７への伝熱速度を促進するためや、燃焼時に燃焼熱を燃
料を気化させる熱として効率良く回収するために気化部
１に熱伝導の良い黄銅などを使用している。したがっ
て、材料の耐熱性から気化部１の加熱温度に限界があ
り、液体燃料が気化される際、特に長期間保存されて酸
化した変質油や高沸点の異種成分を含む燃料を使用した
場合に燃料を完全に気化させることができず、気化素子
７内にタール成分が生成し、目詰まりによって燃焼不良
を生ずる可能性を有していた。また気化素子７を外周方
向から加熱するために気化素子７の中心部の温度が低く
なり、前記のタール生成の現象を促進する原因になって
いた。そしてまた燃焼中は自己の燃焼熱で燃料を気化し
ながら燃焼を継続するが、受熱フランジ２ａからバーナ
受け座２を介して気化室を加熱するために気化室の受熱
量はノズル部３側が大きく給油管８側は小さくなる。そ
して給油管８の給油口８ａ側はバーナ受け座２に覆われ
ていないため放熱部となり、そこへ給油口８ａから低温
の液体燃料が供給され、気化室の温度はノズル部３側が
高く給油管８側は低くなり過ぎて、気化素子７の給油管
８側は燃料が液相状態で存在し気化部として使われない
ためにタールの生成は気化素子７のノズル部３側に集中
して蓄積され、タールによる気化素子７の目詰まりを早
めて製品寿命の短縮の可能性を有していた。これらの課
題の中で燃料の気化可能までの到達時間を短縮する手段
として高周波誘導加熱によって気化器を加熱する方法が
実開平６−３０６２０号公報に記載されているが、実用
に供すべき具体的な構成等は開示されていない。また加
熱部内部の加熱方法については特開平７−４８１２８号
公報で加熱体として金属棒を設けた構成が記載されてい
るがこれは水素貯蔵合金から水素を放出するための手段
であり、液体燃料の気化に関するものは開示されていな
い。In addition, good heat conduction to the vaporizing section 1 is provided to promote the speed of heat transfer from the heater 9 to the vaporizing element 7 at the start of combustion and to efficiently recover combustion heat as heat for vaporizing fuel during combustion. Brass or the like is used. Therefore, there is a limit to the heating temperature of the vaporizing section 1 due to the heat resistance of the material, and when the liquid fuel is vaporized, particularly when a fuel containing a oxidized deteriorated oil or a high-boiling heterogeneous component stored for a long time is used. The fuel could not be completely vaporized, and a tar component was generated in the vaporization element 7, which could cause poor combustion due to clogging. In addition, since the vaporizing element 7 is heated from the outer peripheral direction, the temperature at the center of the vaporizing element 7 decreases, which causes the above-described tar generation phenomenon to be accelerated. Further, during the combustion, the combustion is continued while the fuel is vaporized by its own combustion heat. However, since the vaporization chamber is heated from the heat receiving flange 2a via the burner receiving seat 2, the amount of heat received in the vaporization chamber is large on the nozzle portion 3 side. The oil supply pipe 8 side becomes smaller. Since the fuel supply port 8a side of the fuel supply pipe 8 is not covered with the burner receiving seat 2, it serves as a heat radiating part. Low-temperature liquid fuel is supplied to the fuel supply port 8a from the fuel supply port 8a. On the fuel tank 8 side, the fuel is in a liquid state and is not used as a vaporizing part on the side of the fuel pipe 8 of the vaporizing element 7, so that the production of tar concentrates on the nozzle part 3 side of the vaporizing element 7. As a result, there is a possibility that the clogging of the vaporizing element 7 by the tar is accelerated to shorten the product life. Among these problems, a method of heating a vaporizer by high-frequency induction heating as a means for shortening the time required for fuel to be vaporized is described in Japanese Utility Model Laid-Open Publication No. 6-30620. No configuration or the like is disclosed. As for the method of heating the inside of the heating section, Japanese Patent Application Laid-Open No. 7-48128 describes a configuration in which a metal rod is provided as a heating element. This is a means for releasing hydrogen from a hydrogen storage alloy, and is a liquid fuel. No disclosure is made regarding vaporization of

【０００９】[0009]

【課題を解決するための手段】本発明は上記課題を解決
するために、気化ガスを燃焼させるバーナと、外管と多
孔体と軸体を外から内に順次配設した気化部と、前記気
化部の一端にノズル部、他端に燃料供給部と、高周波電
流発生部と、前記気化部の長手方向外周側に配設された
励磁コイルを備え前記励磁コイルに前記高周波交番電流
発生部を接続し、前記気化部と、磁界中に配設した燃料
供給部を加熱するようにしたものである。In order to solve the above-mentioned problems, the present invention provides a burner for burning a vaporized gas, a vaporizing section in which an outer tube, a porous body, and a shaft are sequentially arranged from outside to inside. A nozzle portion at one end of the vaporizing portion, a fuel supply portion at the other end, a high-frequency current generating portion, and an exciting coil disposed on the outer peripheral side in the longitudinal direction of the vaporizing portion, wherein the exciting coil includes the high-frequency alternating current generating portion. It is connected to heat the vaporizing section and the fuel supply section disposed in the magnetic field.

【００１０】上記発明によれば、高周波交番電流発生部
に通電すると接続された励磁コイルに交流が印加され磁
界が発生し、励磁コイルの内側に配設してある気化部の
外管、多孔体、軸体と燃料供給部は発生する磁界によっ
て誘起された誘導電流によって発熱するが、外管、多孔
体、軸体と燃料供給部がそれぞれ自己発熱するために従
来のシーズヒーター等による間接加熱に比べ燃料の気化
可能温度までの到達時間を大幅に短縮することができ
る。また自己発熱するために外管と軸体の間にある多孔
体は外側（外管側）と内側（軸体側）の両側方向から高
温に加熱され、シーズヒータによる間接加熱方式で見ら
れるような中心部近傍の低温領域がなく、外側から中心
部に向かって高温でほぼ同等の温度分布となる。従って
燃料供給口から供給された燃料は多孔体内の外側から中
心部全域で高温で気化することが可能となり長期間保存
されて酸化した変質油や高沸点成分を含む燃料を使用し
てもほぼ完全に気化させ、タール化を抑制することがで
きる。そして同時に燃料供給部を磁界により加熱する励
磁コイルを設けてあるので燃料供給部は磁界により誘起
された誘導電流によって発熱し、低温の液体燃料が供給
される燃料供給部側を高温にできるので、従来の受熱量
が小さい上に放熱によって低くなり過ぎることはなく、
ノズル側から燃料供給部側の多孔体内の全域で気化が促
進されるようになりタールが多孔体内全域に分散されて
蓄積され、タールによる目詰まりを抑制することができ
る。[0010] According to the above invention, when the high-frequency alternating current generator is energized, an alternating current is applied to the connected exciting coil to generate a magnetic field, and the outer tube and the porous body of the vaporizing section disposed inside the exciting coil. The shaft and fuel supply generate heat due to the induced current induced by the generated magnetic field.However, since the outer tube, porous body, shaft and fuel supply each generate heat by themselves, they can be heated indirectly by a conventional sheath heater. In comparison, the time required for the fuel to reach the vaporizable temperature can be significantly reduced. In addition, the porous body between the outer tube and the shaft is heated to a high temperature from both the outer side (outer tube side) and the inner side (shaft side) due to self-heating, as seen in the indirect heating method using a sheathed heater. There is no low-temperature region near the center, and the temperature distribution becomes almost the same at high temperatures from the outside toward the center. Therefore, the fuel supplied from the fuel supply port can be vaporized at a high temperature from the outside of the porous body to the entire central portion, and it is almost complete even if a fuel containing oxidized deteriorated oil or a high-boiling component stored for a long time is used. And tarification can be suppressed. At the same time, the exciting coil for heating the fuel supply unit by the magnetic field is provided, so that the fuel supply unit generates heat by the induced current induced by the magnetic field, and the temperature of the fuel supply unit to which the low-temperature liquid fuel is supplied can be increased. Conventional heat receiving amount is small and it does not become too low due to heat dissipation,
Evaporation is promoted in the entire area of the porous body from the nozzle side to the fuel supply unit side, and tar is dispersed and accumulated in the entire area of the porous body, so that clogging due to tar can be suppressed.

【００１１】[0011]

【発明の実施の形態】本発明の請求項１にかかる液体燃
料燃焼装置は気化ガスを燃焼させるバーナと、外管と多
孔体と軸体を外から内に順次配設した気化部と、前記気
化部の一端にノズル部、他端に燃料供給部と、高周波電
流発生部と、前記気化部の長手方向の外周側に配設され
た励磁コイルを備え、前記励磁コイルに前記高周波電流
発生部を接続し、前記気化部と、磁界中に配設した前記
燃料供給部を加熱するようにしたものである。A liquid fuel combustion apparatus according to a first aspect of the present invention includes a burner for burning a vaporized gas, a vaporization section in which an outer tube, a porous body, and a shaft are sequentially arranged from outside to inside. A nozzle section at one end of the vaporizing section, a fuel supply section at the other end, a high-frequency current generating section, and an exciting coil disposed on the outer peripheral side in the longitudinal direction of the vaporizing section, wherein the exciting coil includes the high-frequency current generating section. To heat the vaporizing section and the fuel supply section disposed in a magnetic field.

【００１２】そして、高周波交番電流発生部に通電する
と接続された励磁コイルに交流が印加され磁界が発生
し、励磁コイルの内側に配設してある気化部の外管、多
孔体、軸体と燃料供給部は発生する磁界によって誘起さ
れた誘導電流によって発熱するが、外管、多孔体、軸体
と燃料供給部がそれぞれ自己発熱するために従来のシー
ズヒーター等による間接加熱に比べ燃料の気化可能温度
までの到達時間を大幅に短縮することができる。また自
己発熱するために外管と軸体の間にある多孔体は外側と
内側の両側方向から高温に加熱され、シーズヒータによ
る間接加熱方式で見られるような中心部近傍の低温領域
がなく、外側から中心部に向かって高温でほぼ同等の温
度分布となる。従って燃料供給口から供給された燃料は
多孔体内の外側から中心部全域で高温で気化することが
可能となり長期間保存されて酸化した変質油や高沸点成
分を含む燃料を使用してもほぼ完全に気化させ、タール
化を抑制することができる。そして同時に燃料供給部を
磁界により加熱する励磁コイルを設けてあるので燃料供
給部は磁界により誘起された誘導電流によって発熱し、
低温の液体燃料が供給される燃料供給部側を高温にでき
るので、従来の受熱量が小さい上に放熱によって低くな
り過ぎることはなく、ノズル側から燃料供給部側の多孔
体内の全域で気化が促進されるようになりタールが多孔
体内全域に分散されて蓄積され、タールによる目詰まり
を抑制することができる。When the high-frequency alternating current generator is energized, an alternating current is applied to the connected excitation coil to generate a magnetic field, and the outer tube, the porous body, and the shaft of the vaporization unit disposed inside the excitation coil are connected to the excitation coil. The fuel supply unit generates heat due to the induced current induced by the generated magnetic field.However, the outer tube, porous body, shaft, and fuel supply unit generate heat by themselves. The time required to reach a possible temperature can be significantly reduced. In addition, the porous body between the outer tube and the shaft body is heated to a high temperature from both the outer and inner sides due to self-heating, and there is no low-temperature region near the center as seen in the indirect heating method using a sheathed heater, The temperature distribution becomes almost the same at high temperatures from the outside toward the center. Therefore, the fuel supplied from the fuel supply port can be vaporized at a high temperature from the outside of the porous body to the entire central portion, and it is almost complete even if a fuel containing oxidized deteriorated oil or a high-boiling component stored for a long time is used. And tarification can be suppressed. At the same time, since the exciting coil for heating the fuel supply unit by the magnetic field is provided, the fuel supply unit generates heat by the induced current induced by the magnetic field,
Since the temperature of the fuel supply section to which the low-temperature liquid fuel is supplied can be increased, the amount of heat received in the conventional system is small, and it does not become too low due to heat radiation. As a result, the tar is dispersed and accumulated throughout the porous body, so that clogging by the tar can be suppressed.

【００１３】本発明の請求項２にかかる液体燃料燃焼装
置は気化部に磁界を与え加熱する気化部励磁コイルと燃
料供給部に磁界を与え加熱する燃料供給部励磁コイルを
備えたものである。According to a second aspect of the present invention, there is provided a liquid fuel combustion apparatus including a vaporizing section exciting coil for applying a magnetic field to the vaporizing section and heating the fuel and a fuel supplying section exciting coil for applying a magnetic field to the fuel supplying section and heating.

【００１４】そして、燃料供給部励磁コイルから発生す
る磁界により誘起された誘導電流によって燃料供給部が
発熱し、低温の液体燃料が供給される燃料供給部側を高
温にできる。Then, the fuel supply unit generates heat by the induced current induced by the magnetic field generated from the fuel supply unit exciting coil, and the temperature of the fuel supply unit to which the low-temperature liquid fuel is supplied can be increased.

【００１５】本発明の請求項３にかかる液体燃料燃焼装
置は気化部励磁コイルと燃料供給部励磁コイルを電気的
に直列に接続したものである。According to a third aspect of the present invention, there is provided a liquid fuel combustion apparatus in which a vaporization section excitation coil and a fuel supply section excitation coil are electrically connected in series.

【００１６】そして、高周波交番電流発生部が共用化で
きるので構成が簡単にできる。本発明の請求項４にかか
る液体燃料燃焼装置はひとつの励磁コイルで気化部と燃
料供給部の双方を囲むように設けたものである。Since the high-frequency alternating current generator can be shared, the configuration can be simplified. The liquid fuel combustion device according to claim 4 of the present invention is provided so that one excitation coil surrounds both the vaporization unit and the fuel supply unit.

【００１７】そして、気化部と燃料供給部の双方を囲む
ように設けた励磁コイルによって、励磁コイルを共用化
できるので構成が簡単にできる。Further, the excitation coil can be shared by the excitation coil provided so as to surround both the vaporizing section and the fuel supply section, so that the configuration can be simplified.

【００１８】本発明の請求項５にかかる液体燃料燃焼装
置は燃料供給部側の励磁コイルの巻数を気化部側の巻数
より多くしたものである。In the liquid fuel combustion apparatus according to a fifth aspect of the present invention, the number of turns of the exciting coil on the fuel supply unit side is larger than the number of turns on the vaporization unit side.

【００１９】そして、燃料供給部側の励磁コイルの巻数
を気化部側の巻数より多くすることによって、燃料供給
部側は励磁コイルから発生する磁束密度が気化部側の磁
束密度より高くなって、燃料供給部側の誘導電流が大き
くなり発熱量が増大して、燃料供給部の温度をより引き
上げて低温の液体燃料が供給される燃料供給部側をより
高温にできるので、ノズル側から燃料供給部側の多孔体
内の長さ方向全域で気化が促進されるようになりタール
が多孔体内全域に分散されて蓄積され、タールによる目
詰まりをより抑制することができる。By making the number of turns of the exciting coil on the fuel supply unit side larger than the number of turns on the vaporizing unit side, the magnetic flux density generated from the exciting coil on the fuel supply unit side becomes higher than the magnetic flux density on the vaporizing unit side. Since the induced current on the fuel supply unit side increases and the amount of heat generation increases, the temperature of the fuel supply unit can be raised further, and the temperature of the fuel supply unit to which low-temperature liquid fuel is supplied can be made higher. Evaporation is promoted in the entire length direction of the porous body in the part side, and tar is dispersed and accumulated in the entire porous body, so that clogging with tar can be further suppressed.

【００２０】本発明の請求項６にかかる液体燃料燃焼装
置は燃料供給部を磁性材料で構成したものである。According to a sixth aspect of the present invention, there is provided a liquid fuel combustion apparatus wherein the fuel supply section is made of a magnetic material.

【００２１】そして、磁性材料は透磁率が高いため、磁
性材料で構成した燃料供給部はより発熱し、燃料供給部
の温度を引き上げて低温の液体燃料が供給される燃料供
給部側をより高温にできる。Since the magnetic material has a high magnetic permeability, the fuel supply section made of the magnetic material generates more heat, and the temperature of the fuel supply section is raised to raise the temperature of the fuel supply section to which the low-temperature liquid fuel is supplied. Can be.

【００２２】本発明の請求項７にかかる液体燃料燃焼装
置は燃料供給部を磁性ステンレスで構成したものであ
る。According to a seventh aspect of the present invention, there is provided a liquid fuel combustion apparatus wherein the fuel supply section is made of magnetic stainless steel.

【００２３】そして、燃料供給部を磁性ステンレスで構
成してあるので燃料供給部の発熱量が増加し、燃料供給
部の温度を引き上げて低温の液体燃料が供給される燃料
供給部側を高温にできる。そして磁性ステンレスは銅合
金等に比べて熱伝導率が小さいために放熱量を抑えるこ
とができるので、燃料供給部の温度をより引き上げて低
温の液体燃料が供給される燃料供給部側をより高温にで
きる。Since the fuel supply section is made of magnetic stainless steel, the calorific value of the fuel supply section increases, and the temperature of the fuel supply section is raised to raise the temperature of the fuel supply section to which low-temperature liquid fuel is supplied. it can. Since magnetic stainless steel has a lower thermal conductivity than copper alloys, the amount of heat radiation can be suppressed, so the temperature of the fuel supply unit is raised further, and the temperature of the fuel supply unit where low-temperature liquid fuel is supplied becomes higher. Can be.

【００２４】[0024]

【実施例】以下、本発明の実施例について図面を用いて
説明する。Embodiments of the present invention will be described below with reference to the drawings.

【００２５】（実施例１）図１は本発明の実施例１の液
体燃料燃焼装置の要部断面図である。(Embodiment 1) FIG. 1 is a sectional view of a main part of a liquid fuel combustion apparatus according to Embodiment 1 of the present invention.

【００２６】図１において１４は燃料を気化する気化
部、１５は気化部１４の外殻をなす外管、１６は外管１
５内に装着された多孔体、１７は多孔体１６の略中心に
配置された軸体、１８は外管１５の一端に設けられ燃料
ガスを噴出するノズル、１９は外管１５の他端に設けた
燃料供給部、２０は燃料供給部１９に設けた燃料供給口
である。２１、２２は外管１５と燃料供給部１９の外周
を覆うように設けた絶縁ボビン、２３は絶縁ボビン２１
の外周に巻かれ磁界を発生する気化部励磁コイル、２４
は絶縁ボビン２２の外周に巻かれ磁界を発生する燃料供
給部励磁コイル、そして外管１５とノズル１８、燃料供
給部１９は内部に多孔体１６と軸体１７を挿入した後、
必要な開口部を除いて溶接などでシールしてある。２５
は燃料が通る送油管、２６は気化部１４に燃料を供給す
る燃料ポンプ、２７、２８は励磁コイル２３、２４に接
続した高周波交番電流発生部である。２９は燃料ガスを
燃焼させるためのバーナで、燃料ガスと空気を混合する
混合部３０と燃焼火炎を形成する炎口部３１が設けてあ
る。In FIG. 1, reference numeral 14 denotes a vaporizing section for vaporizing the fuel, 15 denotes an outer tube forming an outer shell of the vaporizing section 14, and 16 denotes an outer tube 1.
A porous body mounted inside 5, a shaft body 17 disposed substantially at the center of the porous body 16, a nozzle 18 provided at one end of the outer tube 15 for ejecting fuel gas, and 19 at the other end of the outer tube 15 The fuel supply unit 20 provided is a fuel supply port provided in the fuel supply unit 19. 21 and 22 are insulating bobbins provided so as to cover the outer circumference of the outer tube 15 and the fuel supply unit 19;
, An evaporator excitation coil wound around the outer periphery of the
Is a fuel supply unit exciting coil wound around the outer periphery of the insulating bobbin 22 to generate a magnetic field, and the outer tube 15 and the nozzle 18, and the fuel supply unit 19 has the porous body 16 and the shaft body 17 inserted therein.
Sealed by welding etc. except for necessary openings. 25
Is an oil feed pipe through which fuel passes, 26 is a fuel pump for supplying fuel to the vaporizing section 14, and 27 and 28 are high frequency alternating current generating sections connected to the exciting coils 23 and 24. Reference numeral 29 denotes a burner for burning the fuel gas, which is provided with a mixing section 30 for mixing the fuel gas and the air and a flame port 31 for forming a combustion flame.

【００２７】次に動作、作用について説明する。高周波
交番電流発生部２７、２８に通電すると、交流電力が発
生し、接続された気化部励磁コイル２３と燃料供給部励
磁コイル２４に送られ、気化部励磁コイル２３、燃料供
給部励磁コイル２４のそれぞれの周囲に交流磁界が発生
する。供給された交流のサイクルにしたがって磁界の磁
力線の方向が変化すると気化部１４の外管１５、多孔体
１６、軸体１７、と燃料供給部１９の中にその磁界変化
を阻止しようとする電気的力が作用し気化部励磁コイル
２３、燃料供給部励磁コイル２４内に流れる電流と逆方
向の電流が誘起される。この誘起された誘導電流は気化
部１４の外管１５、多孔体１６、軸体１７および燃料供
給部１９の中を流れその抵抗によって発熱する。この際
気化部１４の外管１５、多孔体１６、軸体１７および燃
料供給部１９は誘導電流によってそれぞれが自己発熱す
るために従来のシーズヒーターによる間接加熱に比べ昇
温時間は大幅に短縮される。気化部１４の温度が温度検
知手段（図示せず）によって所定の温度に到達したこと
を検知すると、燃料ポンプ２６が作動を開始し燃料タン
ク（図示せず）内の燃料を送油管２５を介して燃料供給
口２０より気化部１４内に供給する。気化部１４内に供
給された燃料は加熱された多孔体１６の細孔を浸透拡散
しながら加熱され気化し、気化した燃料ガスはノズル部
１８からバーナ２９の混合部３０内に噴出する。混合部
３０内に燃料ガスが噴出する際に噴出によって生じるエ
ゼクタ効果により周辺より空気を吸引し、混合部３０内
で燃料ガスと空気が混合し予混合気となって炎口部３１
より送出される。炎口部３１より送出された予混合気に
点火手段（図示せず）で点火すると燃焼を開始する。Next, the operation and operation will be described. When the high-frequency alternating current generating units 27 and 28 are energized, AC power is generated and sent to the connected vaporizing unit excitation coil 23 and fuel supply unit excitation coil 24, and the power of the vaporization unit excitation coil 23 and the fuel supply unit excitation coil 24 is changed. An alternating magnetic field is generated around each of them. When the direction of the magnetic field lines of the magnetic field changes in accordance with the supplied alternating current cycle, the electric field in the outer tube 15, the porous body 16, the shaft body 17, and the fuel supply section 19 of the vaporizing section 14 for preventing the magnetic field change is prevented. The force acts to induce a current in the opposite direction to the current flowing in the vaporizing section exciting coil 23 and the fuel supply section exciting coil 24. The induced current flows through the outer tube 15, the porous body 16, the shaft 17, and the fuel supply unit 19 of the vaporization unit 14, and generates heat by its resistance. At this time, the outer tube 15, the porous body 16, the shaft body 17, and the fuel supply unit 19 of the vaporization unit 14 generate heat by themselves by the induced current, so that the time required for the temperature rise is greatly reduced as compared with the conventional indirect heating using the sheathed heater. You. When it is detected that the temperature of the vaporizing section 14 has reached a predetermined temperature by a temperature detecting means (not shown), the fuel pump 26 starts operating to transfer the fuel in the fuel tank (not shown) through the oil feed pipe 25. From the fuel supply port 20 into the vaporization section 14. The fuel supplied into the vaporizing section 14 is heated and vaporized while penetrating and diffusing through the pores of the heated porous body 16, and the vaporized fuel gas is ejected from the nozzle section 18 into the mixing section 30 of the burner 29. When the fuel gas is ejected into the mixing section 30, air is sucked from the surroundings by an ejector effect generated by the ejection, and the fuel gas and the air are mixed in the mixing section 30 to form a premixed gas to form a flame mixture 31.
Sent out. When the premixed gas delivered from the flame port 31 is ignited by an ignition means (not shown), combustion starts.

【００２８】本実施例の構成によれば、気化部励磁コイ
ル２３、燃料供給部励磁コイル２４の内部に配設してあ
る外管１５、多孔体１６、軸体１７および燃料供給部１
９はそれぞれ発生する磁界によって誘起された誘導電流
によって発熱するが、気化部１４の外管１５、多孔体１
６、軸体１７および燃料供給部１９がそれぞれ自己発熱
するために従来のシーズヒーターによる間接加熱に比べ
燃料の気化可能温度までの到達時間を大幅に短縮するこ
とができる。また自己発熱するために気化部１４の外管
１５と軸体１７の間にある多孔体１６は外側と内側の両
側方向から高温に加熱され、シーズヒータ等による間接
加熱方式で見られるような中心部近傍の低温領域がな
く、外側から中心部に向かって高温でほぼ同等の温度分
布となる。したがって多孔体１６の径方向断面の温度分
布は従来の外周方向からのみの加熱方法に比べて低温部
がないために大幅に良くなり多孔体１６内のほぼ全域で
燃料を高温で気化することが可能となった。そのために
長期間保存されて酸化した変質油や高沸点成分を含む燃
料を使用してもほぼ全量を気化することが可能となりタ
ール分の生成を抑制することができる。そして同時に燃
料供給部励磁コイル２４を燃料供給部１９の外周部に設
けてあるので燃料供給部励磁コイル２４から発生する磁
界により誘起された誘導電流によって燃料供給部が発熱
し、低温の液体燃料が供給される燃料供給部１９側を昇
温できるので、気化部１４の温度は従来のような受熱量
が小さい上に放熱によって低くなり過ぎて多孔体１６の
燃料供給部１９側の燃料が液相状態で存在するような低
温領域がなくなり、ノズル１８側から燃料供給部１９側
の多孔体１６内の長さ方向全域で気化が促進されるよう
になりタールが多孔体１６内全域に分散されて蓄積さ
れ、タールによる目詰まりを抑制することができる。そ
して燃料供給部１９を構成する材料としては磁性材料を
使用することが好ましく、磁性材料は透磁率が高いた
め、磁性材料で構成した燃料供給部１９は誘導電流に対
する表皮抵抗が大きくなり、より発熱して燃料供給部１
９の温度を引き上げて低温の液体燃料が供給される燃料
供給部１９側をより高温にできる。そして磁性材料とし
てはＳＵＳ４３０等の磁性ステンレスを使用すると、磁
性ステンレスは銅合金等に比べて耐熱性に優れ、熱伝導
率が小さいために放熱量を抑えることができるので、燃
料供給部の温度をより引き上げて低温の液体燃料が供給
される燃料供給部１９側をより高温にできる。According to the structure of this embodiment, the outer pipe 15, the porous body 16, the shaft 17 and the fuel supply section 1 provided inside the vaporization section excitation coil 23, the fuel supply section excitation coil 24.
9 generates heat due to the induced current induced by the generated magnetic field.
6. Since the shaft 17 and the fuel supply unit 19 each generate heat, the time required to reach the fuel vaporization temperature can be significantly reduced as compared with the conventional indirect heating using a sheath heater. In addition, the porous body 16 between the outer tube 15 and the shaft 17 of the vaporizing section 14 is heated to a high temperature from both the outer and inner sides due to self-heating, and has a center as seen by an indirect heating method using a sheath heater or the like. There is no low-temperature region near the portion, and the temperature distribution becomes almost the same at high temperatures from the outside toward the center. Therefore, the temperature distribution in the radial cross section of the porous body 16 is significantly improved because there is no low-temperature portion, compared with the conventional heating method only from the outer peripheral direction, and the fuel can be vaporized at a high temperature in almost the entire area in the porous body 16. It has become possible. Therefore, even if a fuel containing a oxidized deteriorated oil or a high-boiling component that has been stored for a long period of time is used, almost the entire amount can be vaporized, and the production of tar can be suppressed. At the same time, since the fuel supply unit excitation coil 24 is provided on the outer peripheral portion of the fuel supply unit 19, the fuel supply unit generates heat by the induction current induced by the magnetic field generated from the fuel supply unit excitation coil 24, and low-temperature liquid fuel is generated. Since the temperature of the supplied fuel supply unit 19 can be increased, the temperature of the vaporization unit 14 is low in the amount of heat received as in the related art and becomes too low due to heat radiation, so that the fuel on the fuel supply unit 19 side of the porous body 16 becomes liquid phase. The low-temperature region existing in the state disappears, and vaporization is promoted in the entire length direction in the porous body 16 from the nozzle 18 side to the fuel supply unit 19 side, and tar is dispersed throughout the porous body 16. Accumulated and clogging with tar can be suppressed. It is preferable to use a magnetic material as a material of the fuel supply unit 19, and since the magnetic material has a high magnetic permeability, the fuel supply unit 19 made of a magnetic material has a large skin resistance to an induced current, and generates more heat. And fuel supply unit 1
The temperature of the fuel supply unit 19 to which the low-temperature liquid fuel is supplied can be increased by raising the temperature of the fuel cell 9. When a magnetic stainless steel such as SUS430 is used as the magnetic material, the magnetic stainless steel has a higher heat resistance than a copper alloy or the like, and has a small thermal conductivity. The temperature of the fuel supply unit 19 to which the liquid fuel of a low temperature is further pulled up can be increased.

【００２９】なお、本実施例では燃料供給部１９に燃料
供給部励磁コイル２４を覆うように設けたが、燃料供給
部励磁コイル２４を省略しても本実施例の構成では気化
部励磁コイル２３のみでも発生する磁界により誘起され
た誘導電流により燃料供給部１９が発熱し昇温する。In this embodiment, the fuel supply unit 19 is provided so as to cover the fuel supply unit excitation coil 24. However, even if the fuel supply unit excitation coil 24 is omitted, in the configuration of the present embodiment, the vaporization unit excitation coil 23 is provided. The fuel supply unit 19 generates heat and rises in temperature due to the induced current induced by the magnetic field generated only by itself.

【００３０】（実施例２）図２は本発明の実施例２の液
体燃料燃焼装置の要部断面図である。(Embodiment 2) FIG. 2 is a sectional view of a main part of a liquid fuel combustion apparatus according to Embodiment 2 of the present invention.

【００３１】実施例２において、実施例１と異なる点は
気化部励磁コイル２３と燃料供給部励磁コイル２４を電
気的直列に接続したことである。なお、実施例１と同一
符号のものは同一構造を有し、説明は省略する。The second embodiment differs from the first embodiment in that the vaporizing section exciting coil 23 and the fuel supply section exciting coil 24 are electrically connected in series. The components having the same reference numerals as those in the first embodiment have the same structure, and a description thereof will be omitted.

【００３２】そして、実施例１記載の効果と同様な効果
が得られると同時に、気化部励磁コイル２３と燃料供給
部励磁コイル２４の高周波交番電流発生部３２が共用化
できるので構成を簡単にできる。The same effect as that described in the first embodiment can be obtained, and at the same time, the high-frequency alternating current generating section 32 of the vaporizing section exciting coil 23 and the fuel supply section exciting coil 24 can be shared, so that the configuration can be simplified. .

【００３３】（実施例３）図３は本発明の実施例３の液
体燃料燃焼装置の気化部の要部断面図である。実施例３
において、実施例１と異なる点は励磁コイル３３を気化
部１４と燃料供給部１９の双方を囲むように設けたこと
である。なお、実施例１と同一符号のものは同一構造を
有し、説明は省略する。(Embodiment 3) FIG. 3 is a sectional view of a main part of a vaporization section of a liquid fuel combustion apparatus according to Embodiment 3 of the present invention. Example 3
The difference from the first embodiment is that the exciting coil 33 is provided so as to surround both the vaporizing unit 14 and the fuel supply unit 19. The components having the same reference numerals as those in the first embodiment have the same structure, and a description thereof will be omitted.

【００３４】次に動作、作用を説明する。高周波交番電
流発生部３４に通電すると接続された励磁コイル３３の
周囲に交流磁界が発生する。供給された交流のサイクル
にしたがって磁界の磁力線の方向が変化すると気化部１
４の外管１５、多孔体１６、軸体１７と燃料供給部１９
の中にその磁界変化を阻止しようとする電気的力が作用
し励磁コイル３３内に流れる電流と逆方向の電流が誘起
される。この誘起された誘導電流は気化部１４の外管１
５、多孔体１６、軸体１７と燃料供給部１９の中を流れ
その抵抗によって発熱する。この際気化部１４の外管１
５、多孔体１６、軸体１７と燃料供給部１９は誘導電流
によってそれぞれが自己発熱するために従来のシーズヒ
ーターによる間接加熱に比べ昇温時間は大幅に短縮さ
れ、燃料の気化可能温度までの到達時間を大幅に短縮す
ることができる。また自己発熱するために気化部１４の
外管１５と軸体１７の間にある多孔体１６は外側と内側
の両側方向から高温に加熱され、シーズヒータによる間
接加熱方式で見られるような中心部近傍の低温領域がな
く、外側から中心部に向かって高温でほぼ同等の温度分
布となる。したがって多孔体１６の径方向断面の温度分
布は従来の外周方向からのみの加熱方法に比べて低温部
がないために大幅に良くなり多孔体１６内のほぼ全域で
燃料を高温で気化することが可能となった。そのために
長期間保存されて酸化した変質油や高沸点成分を含む燃
料を使用してもほぼ全量を気化することが可能となりタ
ール分の生成を抑制することができる。そして同時に励
磁コイル３３の内部に配設してある燃料供給部１９は発
生する磁界により誘起された誘導電流によって発熱し、
低温の液体燃料が供給される燃料供給部１９側を昇温で
きるので、気化部１４の温度は従来のような受熱量が小
さい上に放熱によって低くなり過ぎて多孔体１６の燃料
供給部１９側の燃料が液相状態で存在するような低温領
域がなくなり、、ノズル１８側から燃料供給部１９側の
多孔体１６内の長さ方向全域で気化が促進されるように
なりタールが多孔体１６内全域に分散されて蓄積され、
タールによる目詰まりを抑制することができる。そして
燃料供給部１９を構成する材料としては磁性材料を使用
することが好ましく、磁性材料は透磁率が高いため、磁
性材料で構成した燃料供給部１９は誘導電流に対する表
皮抵抗が大きくなり、より発熱して燃料供給部１９の温
度を引き上げて低温の液体燃料が供給される燃料供給部
１９側をより高温にできる。そして磁性材料としてはＳ
ＵＳ４３０の磁性ステンレスを使用すると、磁性ステン
レスは銅合金等に比べて耐熱性に優れ、熱伝導率が小さ
いために放熱量を抑えることができるので、燃料供給部
の温度をより引き上げて低温の液体燃料が供給される燃
料供給部側をより高温にできる。Next, the operation and operation will be described. When the high-frequency alternating current generator 34 is energized, an AC magnetic field is generated around the connected exciting coil 33. When the direction of the magnetic field lines of the magnetic field changes in accordance with the supplied AC cycle, the vaporization unit 1
4, outer body 15, porous body 16, shaft 17 and fuel supply section 19
An electric force acting to prevent the change in the magnetic field acts therein, and a current in a direction opposite to the current flowing in the exciting coil 33 is induced. This induced current is applied to the outer tube 1 of the vaporizing section 14.
5, flows through the porous body 16, the shaft body 17 and the fuel supply unit 19, and generates heat by its resistance. At this time, the outer tube 1 of the vaporizing section 14
5. Since the porous body 16, the shaft body 17 and the fuel supply unit 19 each generate heat by the induced current, the heating time is greatly shortened as compared with the conventional indirect heating using the sheathed heater, and the temperature up to the temperature at which fuel can be vaporized is obtained. The arrival time can be greatly reduced. In addition, the porous body 16 between the outer tube 15 and the shaft 17 of the vaporizing section 14 is heated to a high temperature from both the outer side and the inner side due to self-heating, and the central portion as seen in an indirect heating method using a sheathed heater. There is no nearby low-temperature region, and the temperature distribution becomes almost the same at high temperatures from the outside toward the center. Therefore, the temperature distribution in the radial cross section of the porous body 16 is significantly improved because there is no low-temperature portion as compared with the conventional heating method only from the outer peripheral direction, and the fuel can be vaporized at a high temperature in almost the entire area in the porous body 16. It has become possible. Therefore, even if a fuel containing a oxidized deteriorated oil or a high-boiling component that has been stored for a long period of time is used, almost the entire amount can be vaporized, and the production of tar can be suppressed. At the same time, the fuel supply unit 19 disposed inside the excitation coil 33 generates heat due to the induced current induced by the generated magnetic field,
Since the temperature of the fuel supply unit 19 to which the low-temperature liquid fuel is supplied can be increased, the temperature of the vaporization unit 14 has a small amount of heat reception as in the related art and becomes too low due to heat radiation, so that the porous body 16 has a temperature lower than that of the fuel supply unit 19. There is no longer a low-temperature region in which the fuel in the liquid phase exists, and vaporization is promoted in the entire lengthwise direction of the porous body 16 from the nozzle 18 side to the fuel supply unit 19 side. It is distributed and accumulated throughout the entire area,
Clogging due to tar can be suppressed. It is preferable to use a magnetic material as a material of the fuel supply unit 19, and since the magnetic material has a high magnetic permeability, the fuel supply unit 19 made of a magnetic material has a large skin resistance to an induced current, thereby generating more heat. Then, the temperature of the fuel supply unit 19 can be raised to raise the temperature of the fuel supply unit 19 to which the low-temperature liquid fuel is supplied. And as a magnetic material, S
When US430 magnetic stainless steel is used, the magnetic stainless steel has better heat resistance than copper alloy and the like, and has a low thermal conductivity, so that the amount of heat radiation can be suppressed. The temperature of the fuel supply section to which the fuel is supplied can be made higher.

【００３５】（実施例４）図４、図５は本発明の実施例
４の液体燃料燃焼装置の気化部の断面図である。実施例
４において、実施例３と異なる点は燃料供給部側の励磁
コイルの巻数を気化部側の巻数より多くしたことであ
る。なお、実施例３と同一符号のものは同一構造を有
し、説明は省略する。(Embodiment 4) FIGS. 4 and 5 are sectional views of a vaporizing section of a liquid fuel combustion apparatus according to Embodiment 4 of the present invention. The fourth embodiment differs from the third embodiment in that the number of turns of the excitation coil on the fuel supply unit side is larger than the number of turns on the vaporization unit side. The components having the same reference numerals as those of the third embodiment have the same structure, and the description is omitted.

【００３６】図４は燃料供給部１９側の励磁コイル３５
の巻間隔を気化部１４側の励磁コイル３６の巻間隔より
密にして、燃料供給部１９側の励磁コイル３６の巻数を
気化部１４の励磁コイル３６の巻数より多くしたもので
ある。FIG. 4 shows the excitation coil 35 on the fuel supply section 19 side.
Is made denser than the winding interval of the exciting coil 36 on the vaporizing section 14 side, and the number of turns of the exciting coil 36 on the fuel supply section 19 side is made larger than the number of windings of the exciting coil 36 on the vaporizing section 14.

【００３７】そして、実施例３記載の効果と同様な効果
が得られると同時に、燃料供給部１９側の励磁コイル３
５の巻間隔を気化部１４側の巻間隔より密に設けること
により、燃料供給部１９側は励磁コイル３５から発生す
る磁束密度が気化部１４側の磁束密度より高くなって、
燃料供給部１９側の誘導電流が大きくなり発熱量が増大
して、燃料供給部の温度をより引き上げて低温の液体燃
料が供給される燃料供給部側をより高温にできるので、
ノズル１８側から燃料供給部１９側の多孔体１６内の長
さ方向全域で気化が促進されるようになりタールが多孔
体１６内全域に分散されて蓄積され、タールによる目詰
まりをより抑制することができる。The same effect as that of the third embodiment can be obtained, and at the same time, the exciting coil 3 on the fuel supply unit 19 side can be obtained.
By providing the winding interval 5 more densely than the winding interval on the vaporizing section 14 side, the magnetic flux density generated from the excitation coil 35 on the fuel supply section 19 side becomes higher than the magnetic flux density on the vaporizing section 14 side,
Since the induced current on the side of the fuel supply unit 19 increases and the calorific value increases, the temperature of the fuel supply unit can be further raised to increase the temperature of the fuel supply unit to which the low-temperature liquid fuel is supplied.
Evaporation is promoted in the entire length direction of the porous body 16 from the nozzle 18 side to the fuel supply unit 19 side, and tar is dispersed and accumulated in the entire porous body 16 to further suppress clogging with tar. be able to.

【００３８】図５は燃料供給部１９側の励磁コイル３７
の巻層数を気化部１４側の励磁コイル３８の巻層数より
多くして、燃料供給部１９側の励磁コイル３７の巻数を
気化部１４の励磁コイル３８の巻数より多くしてある。FIG. 5 shows the excitation coil 37 on the fuel supply section 19 side.
Is greater than the number of windings of the exciting coil 38 on the vaporizing unit 14 side, and the number of windings of the exciting coil 37 on the fuel supply unit 19 side is greater than the number of windings of the exciting coil 38 on the vaporizing unit 14.

【００３９】そして、実施例３記載の効果と同様な効果
が得られると同時に、燃料供給部１９側の励磁コイル３
７の巻層数を気化部１４側の巻層数より多くすることに
より、燃料供給部１９側は励磁コイル３７から発生する
磁束密度が気化部１４側の磁束密度より高くなって、燃
料供給部１９側の誘導電流が大きくなり発熱量が増大し
て、燃料供給部の温度をより引き上げて低温の液体燃料
が供給される燃料供給部側をより高温にできるので、ノ
ズル１８側から燃料供給部１９側の多孔体１６内の長さ
方向全域で気化が促進されるようになりタールが多孔体
１６内全域に分散されて蓄積され、タールによる目詰ま
りをより抑制することができる。The same effect as that of the third embodiment can be obtained, and at the same time, the exciting coil 3 on the fuel supply unit 19 side can be obtained.
7 is greater than the number of winding layers on the vaporization section 14 side, the magnetic flux density generated from the excitation coil 37 on the fuel supply section 19 side becomes higher than the magnetic flux density on the vaporization section 14 side, and the fuel supply section Since the induction current on the 19 side increases and the amount of heat generation increases, the temperature of the fuel supply unit can be further raised to increase the temperature of the fuel supply unit to which the low-temperature liquid fuel is supplied. Evaporation is promoted in the entire length direction of the porous body 16 on the 19 side, and tar is dispersed and accumulated in the entire area of the porous body 16, and clogging with tar can be further suppressed.

【００４０】[0040]

【発明の効果】以上説明したように本発明の請求項１に
かかる液体燃料燃焼装置によれば、外管と多孔体と軸体
を外から内に順次配設した気化部の外周側に巻かれた励
磁コイルと、燃料供給部を磁界中に配設して加熱するよ
うに構成してあるので、気化部の外管、多孔体、軸体と
燃料供給部は誘導電流によってそれぞれが自己発熱する
ために従来のシーズヒーター等による間接加熱に比べ昇
温時間は大幅に短縮され、燃料の気化可能温度までの到
達時間を大幅に短縮することができる。そして多孔体の
径方向の内周側まで高温に加熱されるために温度分布が
良くなり燃料の気化が促進されるのでタール生成が抑制
できる。そして同時に燃料供給部は誘導電流によって発
熱し、低温の液体燃料が供給される燃料供給部側を高温
にできるので、ノズル側から燃料供給部側の多孔体内の
全域で気化が促進されるようになりタールが多孔体内全
域に分散されて蓄積され、タールによる目詰まりを抑制
することができる。As described above, according to the liquid fuel combustion apparatus according to the first aspect of the present invention, the outer pipe, the porous body, and the shaft are wound around the outer periphery of the vaporizing section in which the outer pipe, the porous body, and the shaft are sequentially arranged from outside to inside. The heated excitation coil and the fuel supply section are arranged in a magnetic field and heated so that the outer tube, porous body, shaft, and fuel supply section of the vaporization section each generate heat by induced current. Therefore, the time required for raising the temperature is significantly reduced as compared with the conventional indirect heating using a sheath heater or the like, and the time required for the fuel to reach the vaporizable temperature can be significantly reduced. Since the porous body is heated to a high temperature up to the radially inner peripheral side, the temperature distribution is improved, and the vaporization of the fuel is promoted, so that tar generation can be suppressed. At the same time, the fuel supply unit generates heat by the induced current, and the temperature of the fuel supply unit side to which the low-temperature liquid fuel is supplied can be increased, so that vaporization is promoted from the nozzle side to the entire area of the porous body on the fuel supply unit side. In other words, the tar is dispersed and accumulated in the entire area of the porous body, and clogging by the tar can be suppressed.

【００４１】また請求項２にかかる液体燃料燃焼装置は
気化部に磁界を与え加熱する気化部励磁コイルと燃料供
給部に磁界を与え加熱する燃料供給部励磁コイルを備え
た構成にしてあるので、燃料供給部励磁コイルから発生
する磁界により誘起された誘導電流によって燃料供給部
が発熱し、低温の液体燃料が供給される燃料供給部側を
高温にできる。Further, the liquid fuel combustion apparatus according to the second aspect is provided with a vaporizing section exciting coil for applying a magnetic field to the vaporizing section for heating and a fuel supplying section exciting coil for applying a magnetic field to the fuel supplying section for heating. The fuel supply unit generates heat by the induced current induced by the magnetic field generated from the fuel supply unit excitation coil, and the temperature of the fuel supply unit to which the low-temperature liquid fuel is supplied can be increased.

【００４２】また請求項３にかかる液体燃料燃焼装置は
気化部励磁コイルと燃料供給部励磁コイルを直列に接続
したもので、高周波交番電流発生部が共用化できるので
構成が簡単にできる。In the liquid fuel combustion apparatus according to the third aspect, the excitation coil for the vaporization section and the excitation coil for the fuel supply section are connected in series, and the high frequency alternating current generation section can be shared, so that the configuration can be simplified.

【００４３】また請求項４にかかる液体燃料燃焼装置は
ひとつの励磁コイルで気化部と燃料供給部の双方を囲む
ように設けた構成としてあるので、励磁コイルを共用化
できるので構成が簡単にできる。Further, the liquid fuel combustion apparatus according to the fourth aspect has a configuration in which one excitation coil is provided so as to surround both the vaporizing section and the fuel supply section, so that the excitation coil can be used in common and the configuration can be simplified. .

【００４４】また請求項５にかかる液体燃料燃焼装置は
燃料供給部側の励磁コイルの巻数を気化部側の巻数より
多くしてあるので、燃料供給部側は励磁コイルから発生
する磁束密度が気化部側の磁束密度より高くなって、燃
料供給部側の誘導電流が大きくなり発熱量が増大して、
燃料供給部の温度をより引き上げて低温の液体燃料が供
給される燃料供給部側をより高温にできるので、ノズル
側から燃料供給部側の多孔体内の長さ方向全域で気化が
促進されるようになりタールが多孔体内全域に分散され
て蓄積され、タールによる目詰まりをより抑制すること
ができる。In the liquid fuel combustion apparatus according to the fifth aspect, the number of turns of the exciting coil on the fuel supply unit side is larger than the number of turns on the vaporization unit side, so that the magnetic flux density generated from the excitation coil on the fuel supply unit side is vaporized. Higher than the magnetic flux density on the side of the unit, the induced current on the side of the fuel supply unit increases, and the calorific value increases,
Since the temperature of the fuel supply unit can be further raised to increase the temperature of the fuel supply unit side to which the low-temperature liquid fuel is supplied, vaporization is promoted throughout the length of the porous body from the nozzle side to the fuel supply unit side. And the tar is dispersed and accumulated in the whole area of the porous body, so that clogging by the tar can be further suppressed.

【００４５】また請求項６にかかる液体燃料燃焼装置は
燃料供給部を磁性材料で構成してあるので、磁性材料は
透磁率が高いため、磁性材料で構成した燃料供給部はよ
り発熱し、燃料供給部の温度を引き上げて低温の液体燃
料が供給される燃料供給部側をより高温にできる。In the liquid fuel combustion apparatus according to the present invention, since the fuel supply section is made of a magnetic material, the magnetic material has a high magnetic permeability. By raising the temperature of the supply section, the temperature of the fuel supply section to which the low-temperature liquid fuel is supplied can be increased.

【００４６】また請求項７にかかる液体燃料燃焼装置は
燃料供給部を磁性ステンレスで構成してあるので、燃料
供給部の発熱量が増加し、燃料供給部の温度を引き上げ
て低温の液体燃料が供給される燃料供給部側を高温にで
きる。そして磁性ステンレスは銅合金等に比べて熱伝導
率が小さいために放熱量を抑えることができるので、燃
料供給部の温度をより引き上げて低温の液体燃料が供給
される燃料供給部側をより高温にできる。Further, in the liquid fuel combustion apparatus according to the present invention, since the fuel supply section is made of magnetic stainless steel, the calorific value of the fuel supply section increases, and the temperature of the fuel supply section is raised to produce low-temperature liquid fuel. The temperature of the supplied fuel supply unit can be increased. Since magnetic stainless steel has a lower thermal conductivity than copper alloys, the amount of heat radiation can be suppressed, so the temperature of the fuel supply unit is raised further, and the temperature of the fuel supply unit where low-temperature liquid fuel is supplied becomes higher. Can be.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施例１の液体燃料燃焼装置の要部断
面図FIG. 1 is a sectional view of a main part of a liquid fuel combustion apparatus according to a first embodiment of the present invention.

【図２】本発明の実施例２の液体燃料燃焼装置の要部断
面図FIG. 2 is a sectional view of a main part of a liquid fuel combustion apparatus according to a second embodiment of the present invention.

【図３】本発明の実施例３の液体燃料燃焼装置の気化部
の要部断面図FIG. 3 is a sectional view of a main part of a vaporization unit of a liquid fuel combustion device according to a third embodiment of the present invention.

【図４】本発明の実施例４の液体燃料燃焼装置の気化部
の要部断面図FIG. 4 is a cross-sectional view of a main part of a vaporization unit of a liquid fuel combustion device according to a fourth embodiment of the present invention.

【図５】本発明の実施例４の液体燃料燃焼装置の気化部
の要部断面図FIG. 5 is a sectional view of a main part of a vaporization section of a liquid fuel combustion device according to a fourth embodiment of the present invention.

【図６】従来の液体燃料燃焼装置の要部断面図FIG. 6 is a sectional view of a main part of a conventional liquid fuel combustion device.

【符号の説明】[Explanation of symbols]

１４ 気化部 １５ 外管 １６ 多孔体 １７ 軸体 １８ ノズル １９ 燃料供給部 ２３ 気化部励磁コイル ２４ 燃料供給部励磁コイル ２７、２８、３２、３４ 高周波交番電流発生部 ２９ バーナ ３３、３５、３６、３７、３８ 励磁コイル 14 Vaporization part 15 Outer tube 16 Porous body 17 Shaft 18 Nozzle 19 Fuel supply part 23 Vaporization part excitation coil 24 Fuel supply part excitation coil 27, 28, 32, 34 High frequency alternating current generation part 29 Burner 33, 35, 36, 37 , 38 Excitation coil

───────────────────────────────────────────────────── フロントページの続き (72)発明者 近藤 信二 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Ｆターム(参考） 3K052 AA07 AB06 AB08 AB11 AB14 CA04 CA07 CA12 3K068 AA11 AB20 AB37  ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shinji Kondo 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 3K052 AA07 AB06 AB08 AB11 AB14 CA04 CA07 CA12 3K068 AA11 AB20 AB37

Claims (7)

【特許請求の範囲】[Claims] 【請求項１】気化ガスを燃焼させるバーナと、外管と多
孔体と軸体を外から内に順次配設した気化部と、前記気
化部の一端にノズル部と、他端に燃料供給部、高周波電
流発生部と、前記気化部の長手方向の外周側に配設され
た励磁コイルを備え、前記励磁コイルに高周波交番電流
発生部を接続し前記気化部と、磁界中に配設した前記燃
料供給部を加熱するようにした液体燃料燃焼装置。1. A burner for burning a vaporized gas, a vaporizing section in which an outer tube, a porous body and a shaft are sequentially arranged from outside to inside, a nozzle section at one end of the vaporizing section, and a fuel supply section at the other end. A high-frequency current generator, and an excitation coil disposed on the outer peripheral side in the longitudinal direction of the vaporizer, wherein a high-frequency alternating current generator is connected to the excitation coil, and the vaporizer is disposed in a magnetic field. A liquid fuel combustion device for heating a fuel supply unit. 【請求項２】気化部に磁界を与え加熱する気化部励磁コ
イルと燃料供給部に磁界を与え加熱する燃料供給部励磁
コイルを備えた請求項１記載の液体燃料燃焼装置。2. The liquid fuel combustion apparatus according to claim 1, further comprising a vaporizing section exciting coil for applying a magnetic field to the vaporizing section for heating and a fuel supplying section exciting coil for applying a magnetic field to the fuel supplying section for heating. 【請求項３】気化部励磁コイルと燃料供給部励磁コイル
を電気的に直列に接続した請求項１又は２記載の液体燃
料燃焼装置。3. The liquid fuel combustion apparatus according to claim 1, wherein the excitation coil for the vaporization section and the excitation coil for the fuel supply section are electrically connected in series. 【請求項４】ひとつの励磁コイルで気化部と燃料供給部
の双方を囲むように設けた請求項１ないし２のいずれか
１項記載の液体燃料燃焼装置。4. The liquid fuel combustion apparatus according to claim 1, wherein one excitation coil surrounds both the vaporization part and the fuel supply part. 【請求項５】燃料供給部側の励磁コイルの巻数を気化部
側の巻数より多くした請求項４記載の液体燃料燃焼装
置。5. The liquid fuel combustion apparatus according to claim 4, wherein the number of turns of the exciting coil on the side of the fuel supply section is larger than the number of turns on the side of the vaporizing section. 【請求項６】燃料供給部を磁性材料で構成した請求項１
ないし５のいずれか１項記載の液体燃料燃焼装置。6. A fuel supply unit comprising a magnetic material.
The liquid fuel combustion device according to any one of claims 1 to 5. 【請求項７】燃料供給部を磁性ステンレスで構成した請
求項１ないし６のいずれか１項記載の液体燃料燃焼装
置。7. The liquid fuel combustion device according to claim 1, wherein the fuel supply section is made of magnetic stainless steel.