JP2010071624A

JP2010071624A - Fluid heating device

Info

Publication number: JP2010071624A
Application number: JP2008242839A
Authority: JP
Inventors: Toru Tonomura; 徹外村
Original assignee: Tokuden Co Ltd Kyoto
Current assignee: Tokuden Co Ltd Kyoto
Priority date: 2008-09-22
Filing date: 2008-09-22
Publication date: 2010-04-02

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the reactance of a device and to improve power factor in a fluid heating device including a secondary coil composed of a conductor pipe wound on an outer periphery of a primary coil wound on an iron core to circulate the heated fluid. <P>SOLUTION: In this fluid heating device including the secondary coil wound on the outer periphery of the primary coil 2 wound on a leg core 1a, 1b or 1c of a closed magnetic path iron core, and composed of the conductor pipe 3 in which the heated fluid is circulated, one round of the wound conductor pipe 3 is welded or mechanically and electrically connected and fixed 5 by a conductor plate to another round, so that the wound conductor pipe 3 is integrated into the shape of one shorted winding. Thus it becomes unnecessary to connect both ends of the secondary coil at the external, the reactance of the fluid heating device can be reduced, and the power factor can be improved. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、流体加熱装置に関するものである。 The present invention relates to a fluid heating apparatus.

流体加熱装置として、閉磁路鉄心の脚鉄心に、該鉄心に沿って一次コイルを巻回し、その一次コイルの外周囲に導体管からなる二次コイルを巻回し、二次コイルを構成する導体管の内部を通流する流体を、その導体管の発熱により加熱するようにしたものがある。図８（ａ）側面図、（ｂ）上面図、（ｃ）結線図はこのような流体加熱装置の三相電源に適用した構成を示すもので、この図８において、１は脚鉄心１ａ、１ｂ、１ｃを備えた日字型閉磁路鉄心、２は各脚鉄心１ａ、１ｂ、１ｃのそれぞれに巻回された一次コイル、３は各一次コイル２の外周に巻回された流体出口フランジ３ａ，入り口フランジ３ｂを有するＳＵＳの導体管からなる二次コイル、４は流体を通流する母管で、各導体管３の流体出口フランジ３ａと連結されている。Ｕ、Ｖ、Ｗは三相電源の各相に接続する一次端子であり、各一次コイル２は図８（ｃ）に示すようにＹ結線される。 As a fluid heating device, a primary coil is wound around a leg core of a closed magnetic circuit iron core along the iron core, and a secondary coil comprising a conductor tube is wound around the outer periphery of the primary coil, thereby forming a secondary coil. The fluid flowing through the inside is heated by the heat generated in the conductor tube. FIG. 8A is a side view, FIG. 8B is a top view, and FIG. 8C is a connection diagram showing a configuration applied to a three-phase power source of such a fluid heating device. In FIG. 1b, 1c, and 1c, a primary coil wound around each leg iron core 1a, 1b, 1c, 3 a fluid outlet flange 3a wound around the outer periphery of each primary coil 2 , A secondary coil made of a SUS conductor tube having an inlet flange 3b, 4 is a mother tube through which fluid flows, and is connected to the fluid outlet flange 3a of each conductor tube 3. U, V, and W are primary terminals connected to each phase of the three-phase power source, and each primary coil 2 is Y-connected as shown in FIG.

なお、図９（ａ）側面図、（ｂ）上面図、（ｃ）結線図で示すように単相電源に適用した流体加熱装置もある。この場合、両側端部を脚鉄心１ａ、１ｂとしたロ字型の閉磁路鉄心１とし、各脚鉄心１ａ、１ｂのそれぞれに一次コイル２を巻回し、各一次コイル２の外周に流体出口フランジ３ａ，入り口フランジ３ｂを有するＳＵＳの導体管からなる二次コイル３が巻回されており、各一次コイル２は図９（ｃ）に示すように単相電源に並列接続される。 In addition, there is also a fluid heating apparatus applied to a single-phase power source as shown in FIG. 9A (a) side view, (b) top view, and (c) connection diagram. In this case, the closed-end magnetic circuit core 1 having both ends at the leg iron cores 1a and 1b is used as the closed core, and the primary coil 2 is wound around each of the leg iron cores 1a and 1b. The secondary coil 3 which consists of the SUS conductor tube which has 3a and the entrance flange 3b is wound, and each primary coil 2 is connected in parallel with a single phase power supply, as shown in FIG.9 (c).

図１０は以上のように構成される流体加熱装置の半断面を示すもので、各脚鉄心１ａ、又は１ｂ、又は１ｃに一次コイル２を巻回し、その一次コイル２の外周に導体管からなる二次コイル３が巻回されている。一次コイル２に交流電圧が印加されると変圧器と同様に二次コイル３の両端に電圧が誘起される。二次コイル３の両端は外部で短絡されており、二次コイル３の両端に電圧が誘起されると短絡電流が流れる。この短絡電流により二次コイル３が抵抗発熱し、二次コイル３を構成する導体管の内部を流れる流体を加熱する。
特開平４−２３０９８７号公報特開２００７−１２８７５１号公報 FIG. 10 shows a half cross section of the fluid heating apparatus configured as described above. A primary coil 2 is wound around each leg iron core 1a, 1b, or 1c, and a conductor tube is formed on the outer periphery of the primary coil 2. The secondary coil 3 is wound. When an AC voltage is applied to the primary coil 2, a voltage is induced across the secondary coil 3 as in the transformer. Both ends of the secondary coil 3 are short-circuited externally, and a short-circuit current flows when a voltage is induced across the secondary coil 3. Due to this short-circuit current, the secondary coil 3 generates resistance and heats the fluid flowing inside the conductor tube constituting the secondary coil 3.
JP-A-4-230987 JP 2007-128751 A

しかし、以上のような流体加熱装置では、流体と接触する発熱面積が大きく、２次コイルの発熱温度とその２次コイルで加熱される流体の温度との差を小さくでき、所定の熱量を流体に効率よく伝達することができるが、電気的リアクタンスが大きく装置としての力率が低いといった問題があった。 However, in the fluid heating device as described above, the heat generating area in contact with the fluid is large, the difference between the heat generation temperature of the secondary coil and the temperature of the fluid heated by the secondary coil can be reduced, and a predetermined amount of heat can be generated. However, there is a problem that the electrical reactance is large and the power factor as a device is low.

本発明が解決しようとする課題は、鉄心に巻回された一次コイルの外周囲に巻回された加熱する流体を通流する導体管からなる二次コイルを備えた流体加熱装置であって、斯かる装置のリアクタンスを低減し、力率を高くする点にある。 The problem to be solved by the present invention is a fluid heating apparatus comprising a secondary coil composed of a conductor tube that flows around the outer periphery of a primary coil wound around an iron core. The point is that the reactance of such a device is reduced and the power factor is increased.

本発明は、閉磁路鉄心の脚鉄心に、該鉄心に沿って巻回された一次コイルと、前記一次コイルの外周又は内周又は一次コイル間に、該一次コイルに沿って巻回された導体管からなる二次コイルとを有し、前記二次コイルを構成する前記導体管の内部を通流する流体を、前記導体管の発熱により加熱してなる流体加熱装置であって、前記巻回された導体管の前記一次コイルに沿う方向に隣接する導体管どうしを機械的電気的に接続固定した点を主な特徴とする。 The present invention provides a primary coil wound around a leg core of a closed magnetic circuit iron core, and a conductor wound along the primary coil between the outer periphery or inner periphery of the primary coil or the primary coil. A fluid heating device comprising: a secondary coil comprising a tube; and a fluid flowing inside the conductor tube constituting the secondary coil is heated by heat generated from the conductor tube. The main feature is that the conductor tubes adjacent to each other in the direction along the primary coil of the formed conductor tube are mechanically and electrically connected and fixed.

本発明では、二次コイルである導体管が、隣接の導体管どうしを機械的電気的に接続固定されているので、電気的には二次コイルは全体が短絡した一巻き状となり、その一巻きに電流が流れる。すなわち、電気的に一巻き状に一体化した導体管には、一次コイルと対向する部分のみに電流が流れ、巻回外部には電流が流れないので、一次コイルとの結合率が高くリアクタンスは小さくなり、装置としての力率を高めることができる。 In the present invention, since the conductor tube which is the secondary coil is mechanically and electrically connected and fixed between adjacent conductor tubes, the secondary coil is electrically wound in the form of a single short circuit. Current flows through the winding. That is, in a conductor tube that is electrically integrated in a single winding shape, current flows only in the portion facing the primary coil, and no current flows outside the winding, so the coupling ratio with the primary coil is high and the reactance is high. The power factor as a device can be increased.

鉄心に巻回された一次コイルの外周囲に巻回された加熱する流体を通流する導体管からなる二次コイルを備えた流体加熱装置であって、斯かる装置のリアクタンスを低減し、力率を高くする目的を、隣接の導体管どうしを溶接や導電板などにより機械的電気的に接続固定し、巻回した導体管の全体を電気的に一体化することにより実現した。 A fluid heating device comprising a secondary coil consisting of a conductor tube through which a fluid to be heated is wound around the outer periphery of a primary coil wound around an iron core, the reactance of such a device being reduced, The purpose of increasing the rate was realized by mechanically and electrically connecting adjacent conductor tubes together by welding or a conductive plate and electrically integrating the entire wound conductor tube.

図１は、本発明の実施例に係る流体加熱装置の半断面である。なお、流体加熱装置の全体構成は、図８および図９に示す流体加熱装置と同様であり、この流体加熱装置と同一部分または対応する部分には同一の符号を付している。図１において、１ａ又は１ｂ又は１ｃは閉磁路鉄心の脚鉄心、２は脚鉄心に沿って巻回された一次コイル、３はＳＵＳなどからなる導体管、５は機械的電気的に接続固定した溶接部である。すなわち、各脚鉄心１ａ、又は１ｂ、又は１ｃに、該脚鉄心に沿って一次コイル２を巻回し、その一次コイル２の外周に、該一次コイルに沿って導体管からなる二次コイル３が巻回され、巻回された導体管は、図１に示すように隣接の導体管どうしをＴＩＧ溶接により機械的電気的に接続固定されている。 FIG. 1 is a half section of a fluid heating apparatus according to an embodiment of the present invention. The overall configuration of the fluid heating device is the same as that of the fluid heating device shown in FIGS. 8 and 9, and the same reference numerals are given to the same or corresponding parts as the fluid heating device. In FIG. 1, 1a, 1b or 1c is a leg core of a closed magnetic circuit core, 2 is a primary coil wound along the leg core, 3 is a conductor tube made of SUS, etc., 5 is mechanically and electrically connected and fixed. It is a weld. That is, the primary coil 2 is wound around each leg iron core 1a, 1b, or 1c along the leg iron core, and the secondary coil 3 made of a conductor tube along the primary coil is provided on the outer periphery of the primary coil 2. The wound conductor tube is mechanically and electrically connected and fixed between adjacent conductor tubes by TIG welding as shown in FIG.

具体的には図２（ａ）の溶接ライン５ａで示すように、円周方向の４箇所、図２（ｂ）（ｃ）に示すように縦方向（一次コイルに沿う方向）一列にＴＩＧ溶接されている。この４箇所の溶接により確実に隣接する導体管どうしが電気的に接続保持され、また、導体管が円筒状であっても接続面が広げられ一巻間の接触抵抗が低減される。なお、導体管が絶縁被膜されている場合には、溶接箇所の被膜を剥離し裸の導体管どうしを溶接する。 Specifically, as shown by the welding line 5a in FIG. 2 (a), TIG welding is performed in four rows in the circumferential direction, and in the vertical direction (direction along the primary coil) as shown in FIGS. 2 (b) and 2 (c). Has been. By welding these four locations, adjacent conductor pipes are securely connected and held, and even if the conductor pipe is cylindrical, the connection surface is widened and the contact resistance between one turn is reduced. If the conductor tube is coated with an insulating coating, the coating at the welding location is peeled off and the bare conductor tubes are welded together.

図３（ａ）（ｂ）（ｃ）は、導体管の隣接する導体管どうしを機械的電気的に接続固定する他の実施例を示すもので、この図３において、６はＳＵＳや銅などの導電板、７は溶接またはロー付け部である。導電板６は図３（ｂ）に示すように巻回された導体管３の縦方向の長さとほぼ同じ長さをなし、図３（ａ）に示すように巻回された導体管３の円周方向の４箇所で図３（ｂ）（ｃ）に示すように縦方向にまたがって当接し、一巻ごと溶接またはロー付けして接続固定する。このように固定しても図１および図２（ａ）（ｂ）（ｃ）に示す実施例と同様の効果を享受できるほか、巻回された導体管の固定をより強固にする。この場合、図５に示すように導電板６を巻回された導体管３の内側で接続固定するようにしても良い。 FIGS. 3A, 3B, and 3C show another embodiment in which conductor pipes adjacent to each other are mechanically and electrically connected and fixed. In FIG. 3, reference numeral 6 denotes SUS, copper, or the like. The conductive plate 7 is welded or brazed. The conductive plate 6 has substantially the same length as the longitudinal length of the conductor tube 3 wound as shown in FIG. 3B, and the conductor plate 3 wound as shown in FIG. As shown in FIGS. 3 (b) and 3 (c), they are brought into contact with each other in the circumferential direction at four locations in the circumferential direction, and are connected or fixed by welding or brazing each turn. Even if it fixes in this way, the effect similar to the Example shown to FIG.1 and FIG.2 (a) (b) (c) can be enjoyed, and fixation of the wound conductor tube is strengthened more. In this case, as shown in FIG. 5, the conductive plate 6 may be connected and fixed inside the wound conductor tube 3.

図４（ａ）（ｂ）（ｃ）は、隣接する導体管どうしを導電板で接続固定する場合の他の実施例を示すもので、この図４において、６はＳＵＳや銅などの導電板である。この実施例における導電板６は、図４（ｂ）に示すように巻回された導体管３の一巻間にまたがる小片とされ、これを図４（ｂ）に示すように縦方向にジグザグ状に、図４（ａ）に示すように巻回された導体管３の円周方向の４箇所で配置し、各導電板６の端部を隣接する導体管３のそれぞれに溶接またはロー付けにより接続固定する。このように固定しても図１および図２（ａ）（ｂ）（ｃ）に示す実施例と同様の効果を享受できるほか、巻回された導体管の電気的接続をより確実にする。 4 (a), 4 (b), and 4 (c) show another embodiment in which adjacent conductor pipes are connected and fixed with a conductive plate. In FIG. 4, 6 is a conductive plate such as SUS or copper. It is. The conductive plate 6 in this embodiment is a small piece spanning one turn of the conductor tube 3 wound as shown in FIG. 4 (b), and this is zigzag in the vertical direction as shown in FIG. 4 (b). As shown in FIG. 4 (a), the conductor tube 3 wound is arranged at four locations in the circumferential direction, and the ends of each conductive plate 6 are welded or brazed to the adjacent conductor tubes 3 respectively. Secure the connection with. Even if it fixes in this way, the effect similar to the Example shown in FIG.1 and FIG.2 (a) (b) (c) can be enjoyed, and the electrical connection of the wound conductor tube is made more reliable.

以上のように構成した流体加熱装置は、導体管３内の流体を加熱するとき一次コイル２に交流電圧を印加する。この電圧印加により二次コイルである導体管３に電流が発生し、この電流により導体管３は抵抗発熱し、この熱により導体管３内の流体を加熱する。この場合、巻回された導体管３は、全体が短絡した一巻きとなり、導体管３に流れる電流は、一次コイルと対向する部分のみに電流が流れることとなる。 The fluid heating apparatus configured as described above applies an AC voltage to the primary coil 2 when heating the fluid in the conductor tube 3. By applying this voltage, a current is generated in the conductor tube 3 as a secondary coil, and the conductor tube 3 generates resistance heat by this current, and the fluid in the conductor tube 3 is heated by this heat. In this case, the wound conductor tube 3 is a single turn which is short-circuited as a whole, and the current flowing through the conductor tube 3 flows only in the portion facing the primary coil.

なお、巻回された導体管３の配置は、図６に示すように一次コイル２の間、すなわち閉磁路鉄心の脚鉄心１ａ又は１ｂ又は１ｃに、該脚鉄心に沿って一次コイル２ａを巻回し、その一次コイル２ａの外周に、該一次コイル２ａに沿って導体管からなる二次コイル３が巻回され、巻回され、隣接の導体管３どうしを電気的機械的に接続固定した導体管３の外周に、その導体管３に沿って一次コイル２ｂを巻回して配置するようにしてもよく、また、図７に示すように脚鉄心１ａ又は１ｂ又は１ｃに、該脚鉄心に沿って導体管３を巻回し、隣接の導体管３どうしを電気的機械的に接続固定したあと、その巻回された導体管３の外周に、該導体管３に沿って一次コイル２ａを巻回して配置するようにしてもよい。このように導体管３を配置すると、導体管３を通流する磁束が増加し、導体管３に流れる電流が増加し発熱効果を高めることができる。 As shown in FIG. 6, the wound conductor tube 3 is arranged between the primary coils 2, that is, around the leg cores 1a, 1b, or 1c of the closed magnetic circuit core, along which the primary coil 2a is wound. A conductor in which a secondary coil 3 made of a conductor tube is wound around the outer periphery of the primary coil 2a along the primary coil 2a and wound, and the adjacent conductor tubes 3 are electrically and mechanically connected and fixed. The primary coil 2b may be wound around the outer periphery of the tube 3 along the conductor tube 3, and the leg iron core 1a or 1b or 1c may be arranged along the leg iron core as shown in FIG. After the conductor tube 3 is wound and the adjacent conductor tubes 3 are electrically and mechanically connected and fixed, the primary coil 2 a is wound around the wound conductor tube 3 along the conductor tube 3. May be arranged. When the conductor tube 3 is arranged in this way, the magnetic flux flowing through the conductor tube 3 increases, the current flowing through the conductor tube 3 increases, and the heat generation effect can be enhanced.

本発明の実施例に係る流体加熱装置の半断面である。It is a half section of the fluid heating device concerning the example of the present invention. 図１に示す流体加熱装置の導体管の構成を示す上面図（ａ），側面図（ｂ）、拡大図（ｃ）である。It is the top view (a), side view (b), and enlarged view (c) which show the structure of the conductor pipe | tube of the fluid heating apparatus shown in FIG. 本発明の他の実施例に係る流体加熱装置の構成を示す上面図（ａ），側面図（ｂ）、拡大図（ｃ）である。It is the top view (a), side view (b), and enlarged view (c) which show the structure of the fluid heating apparatus which concerns on the other Example of this invention. 本発明の他の実施例に係る流体加熱装置の構成を示す上面図（ａ），側面図（ｂ）、拡大図（ｃ）である。It is the top view (a), side view (b), and enlarged view (c) which show the structure of the fluid heating apparatus which concerns on the other Example of this invention. 本発明の他の実施例に係る流体加熱装置の構成を示す上面図（ａ），側面図（ｂ）、拡大図（ｃ）である。It is the top view (a), side view (b), and enlarged view (c) which show the structure of the fluid heating apparatus which concerns on the other Example of this invention. 本発明の実施例に係る巻回された導体管の他の配置構成を示す半断面である。It is a half section which shows other arrangement composition of the wound conductor tube concerning the example of the present invention. 本発明の実施例に係る巻回された導体管の他の配置構成を示す半断面である。It is a half section which shows other arrangement composition of the wound conductor tube concerning the example of the present invention. 流体加熱装置の構成を示す側面図（ａ）、上面図（ｂ）、結線図（ｃ）である。It is the side view (a) which shows the structure of a fluid heating apparatus, a top view (b), and a connection diagram (c). 他の流体加熱装置の構成を示す側面図（ａ）、上面図（ｂ）、結線図（ｃ）である。It is the side view (a) which shows the structure of another fluid heating apparatus, a top view (b), and a connection diagram (c). 従来の流体加熱装置の半断面である。It is a half section of the conventional fluid heating device.

符号の説明Explanation of symbols

１閉磁路鉄心
１ａ、１ｂ、１ｃ脚鉄心
２、２ａ、２ｂ１次コイル
３導体管の２次コイル
４母管
５接続部
６導体板
７接続部 DESCRIPTION OF SYMBOLS 1 Closed magnetic circuit iron core 1a, 1b, 1c Leg iron core 2, 2a, 2b Primary coil 3 Secondary coil of conductor pipe 4 Mother pipe 5 Connection part 6 Conductor plate 7 Connection part

Claims

閉磁路鉄心の脚鉄心に、該鉄心に沿って巻回された一次コイルと、前記一次コイルの外周又は内周又は一次コイル間に、該一次コイルに沿って巻回された導体管からなる二次コイルとを有し、前記二次コイルを構成する前記導体管の内部を通流する流体を、前記導体管の発熱により加熱してなる流体加熱装置であって、前記巻回された導体管の前記一次コイルに沿う方向に隣接する導体管どうしを機械的電気的に接続固定したことを特徴とする流体加熱装置。 A primary coil wound around a leg core of a closed magnetic circuit core and a conductor tube wound along the primary coil between the outer periphery or inner periphery of the primary coil or between the primary coils. A fluid heating apparatus that heats a fluid flowing through the conductor tube constituting the secondary coil by heat generation of the conductor tube, wherein the wound conductor tube A fluid heating apparatus in which conductor tubes adjacent in a direction along the primary coil are mechanically and electrically connected and fixed.

機械的電気的に接続固定が溶接であること特徴とする請求項１に記載の流体加熱装置。 The fluid heating apparatus according to claim 1, wherein the mechanically and electrically connected fixing is welding.

機械的電気的に接続固定が導電板であること特徴とする請求項１に記載の流体加熱装置。 The fluid heating apparatus according to claim 1, wherein the connection fixing is mechanically and electrically.