JP2005221118A - Shell-and-tube exchanger - Google Patents

Shell-and-tube exchanger Download PDF

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Publication number
JP2005221118A
JP2005221118A JP2004027861A JP2004027861A JP2005221118A JP 2005221118 A JP2005221118 A JP 2005221118A JP 2004027861 A JP2004027861 A JP 2004027861A JP 2004027861 A JP2004027861 A JP 2004027861A JP 2005221118 A JP2005221118 A JP 2005221118A
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tube
heat exchange
fluid
exchange fluid
peripheral surface
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Yoshihisa Ozeki
義久 尾関
Atsushi Narita
篤 成田
Hidekazu Isogai
秀和 磯貝
Ichiro Kunai
一郎 工内
Rinzo Kayano
林造 茅野
Sakio Inoue
早希夫 井上
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Japan Steel Works Ltd
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Japan Steel Works Ltd
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Priority to JP2004027861A priority Critical patent/JP2005221118A/en
Priority to KR1020050008485A priority patent/KR100640301B1/en
Priority to US11/048,896 priority patent/US20050167089A1/en
Priority to EP05002286A priority patent/EP1562016A3/en
Publication of JP2005221118A publication Critical patent/JP2005221118A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To improve structure of a baffle used for holding a tube of a shell-and-tube exchanger, straightening of fluid flow and securing heat transferring rate. <P>SOLUTION: A tube bundle 6 used as a flow passage of a first heat-exchange fluid, an outer shell 1, covering the tube bundle 6, used as a flow passage of second heat-exchange fluid, the baffle 7, provided in the outer shell along a direction crossing an axial direction of the tube bundle 6, having a plurality of through holes 8 where each tube of the tube bundle passes through. A part 8a of an inner peripheral face of the through hole 8 is contacted by a part of an outer peripheral face of the tube 6 and the through hole 8 has a gap 9 through which the second heat-exchange fluid passes between another part 8b of the inner peripheral face and the outer peripheral face of the tube 6. The tube 6 can be supported precisely in terms of dimensions, heat exchange efficiency can be improved by decreasing resistance of fluid and a device can be made compact by making a pitch of the through hole small. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

この発明は各種プラント、建築などの省エネルギー化や反応操作を行うための多管式熱交換器に関するもので、特に該多管式熱交換器に用いられる邪魔板の構造に関するものである。   The present invention relates to a multi-tubular heat exchanger for performing energy saving and reaction operation in various plants and buildings, and particularly relates to a structure of a baffle plate used in the multi-tubular heat exchanger.

熱交換器の構造の１種として多管式熱交換器が知られている。この熱交換器は、外殻の内部に多数の管を束にして管束を配置して、多管の内部と外殻の内部にそれぞれ温度の異なる熱交換流体を流して多管壁を通して熱交換流体同士で熱交換を行うものである。また、この熱交換器では、管束を支持するとともに外殻内部を流れる熱交換流体の偏流を防止し、流れの状態を変えて熱交換効率を高めるために、管の軸方向に直角に邪魔板を配置するとともに邪魔板に管の外形に合わせた貫通孔を設けて上記多管を貫通させるものが知られている（例えば特許文献１、２）   A multi-tube heat exchanger is known as one type of heat exchanger structure. In this heat exchanger, a large number of tubes are bundled inside the outer shell to arrange the tube bundle, and heat exchange fluids with different temperatures flow through the inside of the multi-tube and the outer shell to exchange heat through the multi-tube wall. Heat exchange is performed between fluids. In addition, in this heat exchanger, the baffle plate is supported at right angles to the axial direction of the tube in order to support the tube bundle and prevent the flow of the heat exchange fluid flowing inside the outer shell, and to improve the heat exchange efficiency by changing the flow state. And a baffle plate provided with a through hole that matches the outer shape of the tube to allow the multi-tube to penetrate therethrough (for example, Patent Documents 1 and 2).

さらに、熱交換流体が移動する際の流体抵抗を小さくするために、邪魔板に流体通過用の通過孔を形成するものが提案されている。図３は、邪魔板３０に多数の貫通孔３１を形成して該貫通孔３０に管４０を挿通させるとともに、貫通孔３１の周囲に小孔の通過孔３２を形成したものである。
また、上記邪魔板に変えて、図４に示すように、短冊上の金属板３５を互いに形成したスリットを交互に嵌め込んだり、溶接固定したりして、格子状に組み付け、その格子内にそれぞれ管４０を挿通させて支持するとともに、管４０の周囲の隙間４１を通して熱交換流体を通過させるものが提案されている。また、この技術を改良して管の外形に合わせて金属板にウェーブを形成したものも提案されている。
特開平０５−１０６９９３号公報 特開平０６−１８５８９１号公報 Furthermore, in order to reduce the fluid resistance when the heat exchange fluid moves, there has been proposed one in which a passage hole for fluid passage is formed in the baffle plate. FIG. 3 shows a structure in which a large number of through holes 31 are formed in the baffle plate 30 and a tube 40 is inserted through the through holes 30, and small through holes 32 are formed around the through holes 31.
Further, instead of the baffle plate, as shown in FIG. 4, the slits formed with the metal plates 35 on the strips are alternately fitted or fixed by welding and assembled in a lattice shape, It has been proposed that each pipe 40 is inserted and supported, and the heat exchange fluid is passed through a gap 41 around the pipe 40. In addition, a technique in which a wave is formed on a metal plate in accordance with the outer shape of the pipe by improving this technique has been proposed.
Japanese Patent Laid-Open No. 05-106993 JP-A-06-185891

しかし、前記のように邪魔板の周囲に小孔の通過孔を形成するものでは、開口率が十分ではなく流体の通過が良好になされず、流体抵抗を低下させたいという要望に十分に応えることができないという問題がある。
また、金属板を格子状に組み合わせるものでは、流体の通過は比較的良好になされるものの管の支持強度が十分ではないため、板幅（管の軸方向）を大きくする必要がありその結果、熱交換流体と管外壁との伝熱面積が減少するという問題がある。また強度的及び寸法的な安定性が不十分なため孔の位置の固定が難しく、その結果、管の配列が乱れやすいという問題がある。すなわち、従来の構造では管配列のコンパクト化、寸法安定性、開口率確保の全てを満足させることができなかった。 However, in the case where the small passage hole is formed around the baffle plate as described above, the aperture ratio is not sufficient and the fluid does not pass well, and the demand for reducing the fluid resistance is sufficiently satisfied. There is a problem that can not be.
In addition, in the case where the metal plates are combined in a lattice shape, the passage of the fluid is made relatively good, but the support strength of the tube is not sufficient, so it is necessary to increase the plate width (in the axial direction of the tube). There is a problem that the heat transfer area between the heat exchange fluid and the pipe outer wall is reduced. Further, since the strength and dimensional stability are insufficient, it is difficult to fix the positions of the holes, and as a result, there is a problem that the arrangement of the tubes is easily disturbed. That is, the conventional structure cannot satisfy all of the compactness of the tube arrangement, the dimensional stability, and the securing of the aperture ratio.

本発明は上記事情を背景としてなされたものであり、強度的及び寸法的な安定性が十分で管を安定的に固定できるとともに、熱交換流体の通過を良好に行って熱交換効率を低下させることなく流体抵抗を低下させることができる多管式熱交換器を提供することを目的とする。   The present invention has been made against the background of the above circumstances, and the strength and dimensional stability are sufficient to stably fix the tube, and the heat exchange fluid is favorably passed to reduce the heat exchange efficiency. An object of the present invention is to provide a multi-tubular heat exchanger that can reduce fluid resistance without any problems.

すなわち、本多管式熱交換器の発明は、第１の熱交換流体の流路となる管束と、該管束を覆い第２の熱交換流体の流路となる外殻と、前記外殻内にあって前記管束の軸方向と交差する方向に沿って配置され前記管束の個々の管が貫通する複数の貫通孔を有する邪魔板とを備え、前記貫通孔の一部または全部は、その内周面の一部に前記管の外周面の一部が接触するとともに前記内周面の他部と前記管の外周面との間に前記第２の熱交換流体が通過する隙間を有する形状からなることを特徴とする。   That is, the present invention of the multi-tubular heat exchanger includes a tube bundle serving as a flow path for the first heat exchange fluid, an outer shell covering the tube bundle and serving as a flow path for the second heat exchange fluid, And a baffle plate having a plurality of through holes that are arranged along a direction intersecting the axial direction of the tube bundle and through which the individual tubes of the tube bundle pass, and a part or all of the through holes are included therein. From a shape in which a part of the outer peripheral surface of the tube is in contact with a part of the peripheral surface and a gap through which the second heat exchange fluid passes between the other part of the inner peripheral surface and the outer peripheral surface of the tube. It is characterized by becoming.

なお、前記貫通孔は、点対称形状からなるものが望ましい。これにより管の支持と熱交換流体の通過とがバランス良くなされる。
また、前記貫通孔は、略菱形形状を有し、一対の対向隅部が前記管の外周面が内接する弧状の形状を有し、他の一対の対向隅部は前記管の外周面と離隔する形状を有するものがさらに望ましい。上記のように一対の対向隅部にそれぞれ管の外周面が内接することで管が安定して支持される。また、他の一対の対向隅部が前記管の外周面と離隔する形状を有していることにより熱交換流体の通過を確実なものとする。そしてこの他の一対の対向隅部は、角形状でも湾曲形状でもよく、湾曲形状とする場合には管の曲率よりも小さな曲率にすることで上記隙間が確実に得られる。 The through-hole is preferably a point-symmetric shape. As a result, the support of the tube and the passage of the heat exchange fluid are balanced.
The through-hole has a substantially rhombus shape, a pair of opposing corners has an arc shape in which the outer peripheral surface of the tube is inscribed, and the other pair of opposing corners are separated from the outer peripheral surface of the tube. What has the shape to do is further desirable. As described above, the outer peripheral surfaces of the pipes are inscribed in the pair of opposing corners, so that the pipes are stably supported. Further, the other pair of opposing corners have a shape that is separated from the outer peripheral surface of the tube, thereby ensuring the passage of the heat exchange fluid. The other pair of opposing corners may be angular or curved, and in the case of a curved shape, the gap is reliably obtained by making the curvature smaller than the curvature of the tube.

前記貫通孔は、管の配列に従って例えば複数を規則的に配列する。また、上記邪魔板は、管の軸方向に間隔をおいて複数を配置するものであってもよい。貫通孔は、レーザ加工や機械加工によって邪魔板を穿孔することにより形成することができるが、本発明としては貫通孔の形成方法は特に限定されるものではなく、公知の適宜の方法によって貫通孔を設けることができる。
なお、管の数や配列方法などは特に限定されるものではなく、直管、Ｕ字管、波管等適宜選択することができる。また、外殻の形状も特に限定されるものではなく、その基本的な機能を果たす限りは必要に応じて適宜の形状とすることができる。 For example, a plurality of the through holes are regularly arranged according to the arrangement of the tubes. A plurality of the baffle plates may be arranged at intervals in the axial direction of the tube. The through hole can be formed by drilling a baffle plate by laser processing or machining, but the method of forming the through hole is not particularly limited as the present invention, and the through hole is formed by a known appropriate method. Can be provided.
The number of tubes and the arrangement method are not particularly limited, and can be selected as appropriate, such as a straight tube, a U-shaped tube, and a wave tube. Further, the shape of the outer shell is not particularly limited, and may be an appropriate shape as necessary as long as the basic function is achieved.

すなわち、本発明によれば、邪魔板に形成した貫通孔の内周面の一部で管が支持されるので管が安定して固定され、位置精度も高くなる。また、上記貫通孔と管の外周面との間には、熱交換流体が通過できる隙間が確保されており、熱交換流体を円滑に通過させることができる。また、熱交換流体と管との接触は、上記貫通孔で阻害されないばかりか、上記隙間を通過する際に、直接管と熱交換流体とが接触するので、熱交換効率をさらに高める作用が得られる。   That is, according to the present invention, since the pipe is supported by a part of the inner peripheral surface of the through hole formed in the baffle plate, the pipe is stably fixed and the positional accuracy is also improved. Further, a gap through which the heat exchange fluid can pass is secured between the through hole and the outer peripheral surface of the tube, and the heat exchange fluid can be passed smoothly. In addition, the contact between the heat exchange fluid and the pipe is not hindered by the through hole, and since the pipe and the heat exchange fluid are in direct contact with each other when passing through the gap, an effect of further improving the heat exchange efficiency is obtained. It is done.

以上説明したように、本発明の多管式熱交換器は、第１の熱交換流体の流路となる管束と、該管束を覆い第２の熱交換流体の流路となる外殻と、前記外殻内にあって前記管束の軸方向と交差する方向に沿って配置され前記管束の個々の管が貫通する複数の貫通孔を有する邪魔板とを備え、前記貫通孔の一部または全部は、その内周面の一部に前記管の外周面の一部が接触するとともに前記内周面の他部と前記管の外周面との間に前記第２の熱交換流体が通過する隙間を有する形状からなるので、以下の効果を有している。
（１）寸法精度が良いので管の固定が十分できることと邪魔板の肉厚を十分取ることで強度が保証できる。
（２）開口面積の増大と流体抵抗の減少により外殻側の熱交換流体の流速の低下を防止できるので伝熱効率が良くなる。
（３）貫通孔のピッチを小さくして、管束の配列をコンパクト化できるので外殻の内径を小さくでき、容器の製造コストの低減が可能となる。 As described above, the multitubular heat exchanger according to the present invention includes a tube bundle serving as a flow path for the first heat exchange fluid, and an outer shell that covers the tube bundle and serves as a flow path for the second heat exchange fluid; A baffle plate having a plurality of through holes in the outer shell and disposed along a direction intersecting the axial direction of the tube bundle and through which the individual tubes of the tube bundle pass, and part or all of the through holes Is a gap through which a part of the outer peripheral surface of the tube contacts a part of the inner peripheral surface and the second heat exchange fluid passes between the other part of the inner peripheral surface and the outer peripheral surface of the tube. Since it has a shape having the following, it has the following effects.
(1) Since the dimensional accuracy is good, the tube can be fixed sufficiently and the thickness of the baffle plate can be sufficiently secured to ensure the strength.
(2) Since the decrease in the flow rate of the heat exchange fluid on the outer shell side can be prevented by increasing the opening area and decreasing the fluid resistance, the heat transfer efficiency is improved.
(3) Since the pitch of the through holes can be reduced and the arrangement of the tube bundle can be made compact, the inner diameter of the outer shell can be reduced, and the manufacturing cost of the container can be reduced.

以下に、本発明の一実施形態を図１、２に基づいて説明する。
円筒形状の胴部１ａと該胴部１ａの両端に連なる半球殻形状のヘッド部１ｂ、１ｃとを主構造として外殻１が構成されている。該外殻１内には、上記胴部１ａ内空間とヘッド部１ｂ、１ｃ内空間とを隔てる隔壁２ｂ、２ｃが設置されており、ヘッド部１ｂ、１ｃには、上記隔壁２ａ、２ｂで囲まれた空間に連通して外部に開口する流体口３ｂ、３ｃがそれぞれ設けられている。また、上記胴部１ａには、隔壁２ｂ、２ｃで囲まれた空間に連通して外部に開口する流体口４ａ、５ａが設けられている。
さらに上記隔壁２ｂ、２ｃ間には、多数の管６…６が管束になって架設されており、各管の両端部はそれぞれ隔壁２ｂ、２ｃで囲まれたヘッド部１ｂ、１ｃ内空間に連通している。 Below, one Embodiment of this invention is described based on FIG.
The outer shell 1 is composed of a cylindrical body portion 1a and hemispherical head portions 1b and 1c connected to both ends of the body portion 1a as main structures. In the outer shell 1, partition walls 2b and 2c are provided to separate the space in the body portion 1a and the spaces in the head portions 1b and 1c. The head portions 1b and 1c are surrounded by the partition walls 2a and 2b. Fluid ports 3b and 3c communicating with the spaces and opening to the outside are provided. The body portion 1a is provided with fluid ports 4a and 5a that communicate with a space surrounded by the partition walls 2b and 2c and open to the outside.
Further, a large number of tubes 6... 6 are installed in a bundle between the partition walls 2b and 2c, and both ends of each tube communicate with the spaces in the head portions 1b and 1c surrounded by the partition walls 2b and 2c, respectively. doing.

さらに、胴部１ａ内空間には、管６の軸方向に間隔を置いて流体の流れを規則的に乱す複数の邪魔板７…７が配置されており、一部に設けた開口部（図示しない）を通して邪魔板７、７を超えて流体の移動が可能になって。なお、邪魔板７…７には、上記管６が貫通する貫通孔８…８が整列して形成されている。該貫通孔８は、レーザ加工などによって邪魔板７を穿孔する方法などにより形成されており、図２に示すように点対称で略菱形の形状を有している。そして開度の大きな一対の対向隅部８ａの内面は、管６の外周形状の曲率よりも大きな曲率の湾曲形状とされている。一方、他の対向隅部８ｂは、開度が小さく、管６の外周形状の曲率よりも小さな曲率の湾曲形状とされている。また、開度の大きな一対の対向隅部８ａ、８ａ間の間隔は、最大箇所で管６の外径と略同じで管６よりも僅かに大きくされている。なお、対向隅部８ａ、８ａ間の最大間隔を管６の外径にあまりに近くすると挿通が難しくなるが、その差異を大きくすると管６の支持性能が損なわれるので、これらを勘案して上記間隔を定めればよい。   Furthermore, a plurality of baffle plates 7... 7 that regularly disturb the flow of the fluid are arranged in the space inside the body portion 1a at intervals in the axial direction of the tube 6, and an opening portion (shown in the figure) is provided. Not to be able to move the fluid beyond the baffle plates 7,7. In the baffle plates 7 ... 7, through holes 8 ... 8 through which the pipe 6 passes are formed in alignment. The through-hole 8 is formed by a method of drilling the baffle plate 7 by laser processing or the like, and has a point-symmetrical and approximately rhombic shape as shown in FIG. And the inner surface of a pair of opposing corner part 8a with a large opening is made into the curved shape of a curvature larger than the curvature of the outer periphery shape of the pipe | tube 6. As shown in FIG. On the other hand, the other opposing corner 8b has a small opening and a curved shape with a smaller curvature than the curvature of the outer peripheral shape of the tube 6. The distance between the pair of opposed corners 8a, 8a having a large opening is substantially the same as the outer diameter of the tube 6 at the maximum position and slightly larger than the tube 6. If the maximum distance between the opposing corners 8a and 8a is too close to the outer diameter of the tube 6, insertion becomes difficult. However, if the difference is increased, the support performance of the tube 6 is impaired. Can be determined.

上記貫通孔８にそれぞれ管６が挿通された状態では、上記の対向隅部８ａ、８ａに管６の外壁が接することで管６が支持される。このとき対向隅部８ａ、８ａの間隔が管６の外径と略同じになっており、貫通孔８の間隔が対向隅部の両側で菱形形状に従って次第に狭くなることで管６は安定した位置で支持されることになる。一方、対向隅部８ａ、８ａの両側では、対向隅部８ｂ、８ｂに向けて次第に管６の外壁との間の隙間が大きくなり、対向隅部８ｂ、８ｂで最も大きくなる隙間９が確保される。上記構成によって本発明の一実施形態の多管式熱交換器が構成されている。   In a state where the pipe 6 is inserted through each of the through holes 8, the outer wall of the pipe 6 is in contact with the opposed corner portions 8 a and 8 a so that the pipe 6 is supported. At this time, the interval between the opposing corners 8a, 8a is substantially the same as the outer diameter of the tube 6, and the interval between the through holes 8 is gradually reduced according to the rhombus shape on both sides of the opposing corner, so that the tube 6 is in a stable position. Will be supported. On the other hand, on both sides of the opposed corners 8a, 8a, the gap between the outer wall of the pipe 6 gradually increases toward the opposed corners 8b, 8b, and the largest gap 9 is secured at the opposed corners 8b, 8b. The The multi-tube heat exchanger according to one embodiment of the present invention is configured by the above configuration.

次に上記多管式熱交換器の作用について説明する。
ヘッド部１ｂ、１ｃの一方の流体口、例えば流体口３ｂから熱交換を受ける第１の熱交換流体（例えば冷水）をヘッド部１ｂ内に導入する。すると、第１の熱交換流体は、ヘッド部１ｂ内空間から各管６内を移動して他方のヘッド部１ｃ内空間へと移動し、流体口３ｃから外部に排出される。一方、第２の熱交換流体（例えば温水）は、流体口４ａから胴部１ａ内空間に導入される。すると第２の熱交換流体は、邪魔板８の表面および図示されない開口部で案内されながら移動して前記管６の外壁と接触して管６内を流れる第１の熱交換流体との間で熱交換を行う。また、第２の熱交換流体の一部は、管６が挿通されている貫通孔８の隙間９を通して邪魔板７を通過する。この際に、管６の外壁に沿って第２の流体が移動することでさらに管６との熱交換がなされる。 Next, the operation of the multitubular heat exchanger will be described.
A first heat exchange fluid (for example, cold water) that receives heat exchange from one of the fluid ports of the head portions 1b and 1c, for example, the fluid port 3b, is introduced into the head portion 1b. Then, the 1st heat exchange fluid moves in each pipe 6 from the space in the head part 1b, moves to the space in the other head part 1c, and is discharged outside from the fluid port 3c. On the other hand, the second heat exchange fluid (for example, warm water) is introduced from the fluid port 4a into the space inside the trunk portion 1a. Then, the second heat exchange fluid moves while being guided by the surface of the baffle plate 8 and an opening (not shown), contacts the outer wall of the tube 6, and flows between the first heat exchange fluid flowing in the tube 6. Perform heat exchange. A part of the second heat exchange fluid passes through the baffle plate 7 through the gap 9 of the through hole 8 through which the pipe 6 is inserted. At this time, the second fluid moves along the outer wall of the tube 6 to further exchange heat with the tube 6.

上記のように第２の流体が上記隙間９を通して邪魔板７を通過することで第２の熱交換流体の流体抵抗を小さくすることが可能となり、全体として第２の熱交換流体の流速の低下を防止できる。この結果、第２の熱交換流体による熱交換効率が向上する。
また、上記のように管６は、貫通孔８によって安定して高い寸法精度で確実に支持できるので、貫通孔のピッチを小さくしても管束の配列の規則性は維持でき、その結果、熱交換器の小型化が可能になる。
以上、本発明を上記実施形態に基づいて説明したが、本発明は上記実施形態の説明に限定されるものではなく、当然に本発明の範囲内において適宜変更が可能である。 Since the second fluid passes through the baffle plate 7 through the gap 9 as described above, the fluid resistance of the second heat exchange fluid can be reduced, and the flow rate of the second heat exchange fluid is reduced as a whole. Can be prevented. As a result, the heat exchange efficiency by the second heat exchange fluid is improved.
Further, as described above, since the tube 6 can be stably supported with high dimensional accuracy by the through-hole 8, the regularity of the arrangement of the tube bundle can be maintained even if the pitch of the through-holes is reduced. It is possible to reduce the size of the exchanger.
As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to description of the said embodiment, Of course, it can change suitably within the scope of the present invention.

本発明の一実施形態の熱交換器全体を示す断面図である。It is sectional drawing which shows the whole heat exchanger of one Embodiment of this invention. 同じく邪魔板の一部拡大図であり、（ａ）は貫通孔の配列状態を示す正面図、（ｂ）は管の挿通状態を示す斜視図である。It is a partial enlarged view of a baffle plate similarly, (a) is a front view which shows the arrangement | sequence state of a through-hole, (b) is a perspective view which shows the penetration state of a pipe | tube. 背景技術における邪魔板の一例を示す図であり、（ａ）は貫通孔の整列状態を示す正面図、（ｂ）は管の挿通状態を示す平面図である。It is a figure which shows an example of a baffle plate in background art, (a) is a front view which shows the alignment state of a through-hole, (b) is a top view which shows the penetration state of a pipe | tube. 背景技術における格子状の金属板の一例を示す図であり、（ａ）は格子および管の整列状態を示す正面図、（ｂ）は管の挿通状態を示す平面図である。It is a figure which shows an example of the grid | lattice-like metal plate in background art, (a) is a front view which shows the alignment state of a grating | lattice and a pipe | tube, (b) is a top view which shows the penetration state of a pipe | tube.

符号の説明Explanation of symbols

１ 外殻
１ａ 胴部
１ｂ ヘッド部
１ｃ ヘッド部
２ａ 隔壁
２ｂ 隔壁
３ｂ 流体口
３ｃ 流体口
４ａ 流体口
５ａ 流体口
６ 管
７ 邪魔板
８ 貫通孔
８ａ 対向隅部
８ｂ 対向隅部
９ 隙間 DESCRIPTION OF SYMBOLS 1 Outer shell 1a Body 1b Head part 1c Head part 2a Partition 2b Partition 3b Fluid port 3c Fluid port 4a Fluid port 5a Fluid port 6 Pipe 7 Baffle plate 8 Through hole 8a Opposite corner 8b Opposite corner 9 Clearance

Claims (4)

第１の熱交換流体の流路となる管束と、該管束を覆い第２の熱交換流体の流路となる外殻と、前記外殻内にあって前記管束の軸方向と交差する方向に沿って配置され前記管束の個々の管が貫通する複数の貫通孔を有する邪魔板とを備え、前記貫通孔の一部または全部は、その内周面の一部に前記管の外周面の一部が接触するとともに前記内周面の他部と前記管の外周面との間に前記第２の熱交換流体が通過する隙間を有する形状からなることを特徴とする多管式熱交換器。 A tube bundle serving as a flow path for the first heat exchange fluid, an outer shell covering the tube bundle and serving as a flow path for the second heat exchange fluid, and a direction within the outer shell and intersecting the axial direction of the tube bundle. And a baffle plate having a plurality of through holes through which the individual tubes of the tube bundle pass, and a part or all of the through holes are part of the inner peripheral surface of the outer peripheral surface of the tube. The multi-tube heat exchanger is characterized by having a gap through which the second heat exchange fluid passes between the other part of the inner peripheral surface and the outer peripheral surface of the pipe. 前記貫通孔は、点対称形状からなることを特徴とする請求項１記載の多管式熱交換器。 The multi-tube heat exchanger according to claim 1, wherein the through hole has a point-symmetric shape. 前記貫通孔は、略菱形形状を有し、一対の対向隅部が前記管の外周面が内接する弧状の形状を有し、他の一対の対向隅部は前記管の外周面と離隔する形状を有することを特徴とする請求項１または２に記載の多管式熱交換器。 The through-hole has a substantially rhombus shape, a pair of opposing corners has an arc shape in which the outer peripheral surface of the tube is inscribed, and the other pair of opposing corners are separated from the outer peripheral surface of the tube The multitubular heat exchanger according to claim 1 or 2, characterized by comprising: 前記貫通孔は、複数が規則的に配列していることを特徴とする請求項１〜３のいずれかに記載の多管式熱交換器。 The multi-tube heat exchanger according to claim 1, wherein a plurality of the through holes are regularly arranged.
JP2004027861A 2004-02-04 2004-02-04 Shell-and-tube exchanger Pending JP2005221118A (en)

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KR1020050008485A KR100640301B1 (en) 2004-02-04 2005-01-31 Multi-tube heat exchanger
US11/048,896 US20050167089A1 (en) 2004-02-04 2005-02-03 Multi-tube heat exchanger
EP05002286A EP1562016A3 (en) 2004-02-04 2005-02-03 Multi-tube heat exchanger

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KR100640301B1 (en) 2006-10-31
US20050167089A1 (en) 2005-08-04
EP1562016A2 (en) 2005-08-10
KR20050079222A (en) 2005-08-09

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