EP1562016A2 - Mehrrohrwärmetauscher - Google Patents

Mehrrohrwärmetauscher Download PDF

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Publication number
EP1562016A2
EP1562016A2 EP05002286A EP05002286A EP1562016A2 EP 1562016 A2 EP1562016 A2 EP 1562016A2 EP 05002286 A EP05002286 A EP 05002286A EP 05002286 A EP05002286 A EP 05002286A EP 1562016 A2 EP1562016 A2 EP 1562016A2
Authority
EP
European Patent Office
Prior art keywords
tubes
tube
peripheral face
fluid
heat exchanging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05002286A
Other languages
English (en)
French (fr)
Other versions
EP1562016A3 (de
Inventor
Yoshihisa Ozeki
Atsushi Narita
Hidekazu Isogai
Ichiro Kunai
Rinzo Kayano
Sakio Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Steel Works Ltd
Original Assignee
Japan Steel Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Steel Works Ltd filed Critical Japan Steel Works Ltd
Publication of EP1562016A2 publication Critical patent/EP1562016A2/de
Publication of EP1562016A3 publication Critical patent/EP1562016A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to a multi-tube heat exchanger for saving energy in plants of various types, architectures and so on, or for conducting chemical reactions, and more particularly to a structure of a baffle plate which is employed in the multi-tube heat exchanger.
  • a multi-tube heat exchanger As a type of heat exchanger structure, there has been known a multi-tube heat exchanger.
  • This type of heat exchanger includes a number of tubes bundled into a tube bundle which are arranged inside an outer shell, and heat exchanging fluids having respectively different temperatures are supplied into the multi-tubes and inside the outer shell, thereby to conduct heat exchange between the heat exchanging fluids through walls of the multi-tubes.
  • a baffle plate is provided at the right angle with respect to an axial direction of the tubes for the purpose of supporting the tube bundle, and at the same time, for the purpose of preventing drift of the heat exchanging fluid which flows inside the outer shell so as to change a state of flow thereby to enhance heat exchanging efficiency.
  • the baffle plate is provided with through holes corresponding to an outer shape of the tubes so that the multi-tubes may be passed therethrough (For example, Japanese Patent Publication No. JP-A-05-106993 and Japanese Patent Publication No. JP-A-06-185891).
  • FIGs. 3A and 3B show a baffle plate 30 which is provided with a number of through holes 31 through which tubes 40 are adapted to pass, and additionally provided with small pass holes 32 around the through holes 31.
  • metal plates 35 in a strip shape are assembled like a latticework, as shown in Figs. 4A and 4B, by alternately engaging slits formed therein with each other or by welding.
  • the tubes 40 are passed through the latticework to be supported, and the heat exchanging fluid is supplied through gaps 41 around the tubes 40.
  • waves are formed in the metal plates in correspondence with the outer shape of the tubes.
  • the invention has been made in view of the above described circumstances as the background, and it is an object of the invention to provide a multi-tube heat exchanger in which tubes can be stably fixed with sufficient stability in strength and dimension, and at the same time, a flow of heat exchanging fluid can be favorablymade, whereby fluid resistance can be decreased without lowering heat exchanging efficiency.
  • a multi-tube heat exchanger comprising a bundle of tubes which form fluid passages of first heat exchanging fluid, an outer shell which covers the bundle of tubes and form a fluid passage of second heat exchanging fluid, and a baffle plate which is arranged inside the outer shell in a direction intersecting an axial direction of the bundle of tubes and provided with a plurality of through holes through which respective tubes of the bundle are passed, characterized in that a part or all of the through holes have such a shape that a portion of an outer peripheral face of the tube comes into contact with a portion of an inner peripheral face of the through hole, and a gap for passing the second heat exchanging fluid is formed between the other portion of the inner peripheral face and the outer peripheral face of the tube.
  • the through hole has a shape symmetrical with respect to a point. In this manner, support of the tubes and a flow of the heat exchanging fluid can be made maintaining a good balance.
  • the through hole has a substantially rhombic shape, wherein a pair of rounded opposed corner portions to be internally contacted with the outer peripheral face of the tube, and the other pair of opposed corner portions have a shape to be separated from the outer peripheral face of the tube.
  • the outer peripheral face of the tube is internally contacted with a pair of the opposed corner portions respectively, whereby the tube can be stably held.
  • the other pair of the opposed corner portions have the shape to be separated from the outer peripheral face of the tube, whereby the flow of the heat exchanging fluid can be ensured.
  • the other pair of the opposed corner portions may be formed either in an angled shape or in a rounded shape. In case of forming them in a rounded shape, the above described gap can be reliably obtained, by making their curvature smaller than a curvature of the tube.
  • the aforesaid through holes are regularly arranged, for example in a plurality, according to the arrangement of the tubes. Moreover, a plurality of the aforesaid baffle plates may be arranged in a spaced relation in an axial direction of the tubes.
  • the through holes can be formed by piercing the baffle plate by laser work or mechanical work.
  • a method of forming the through holes is not particularly limited, but it is possible to form the through holes by appropriate known means.
  • the number of the tubes, manner of arranging the tubes and so on are not particularly limited, and it is possible to appropriately select the tubes out of straight tubes, U-shaped tubes, corrugated tubes, etc.
  • the shape of the outer shell is not particularly limited, and an appropriate shape can be selected according to necessity, as far as its essential function is fulfilled.
  • each the tube can be supported by a portion of the inner peripheral face of the through hole which is formed in the baffle plate, and therefore, the tube can be stably fixed with high positional accuracy.
  • the gap is formed between the through hole and the outer peripheral face of the tube so that the heat exchanging fluid can pass it through, and the heat exchanging fluid can be smoothly passed. Further, contact between the heat exchanging fluid and the tube will not be interrupted by the through hole, but the heat exchanging fluid will be directly brought into contact with the tube while it passes the aforesaid gap. As the results, the heat exchanging efficiency will be further enhanced.
  • the multi-tube heat exchanger according to the invention includes a bundle of tubes which form the fluid passages of the first heat exchanging fluid, the outer shell which covers the bundle of the tubes and form the fluid passage of the second heat exchanging fluid, and the baffle plate which is arranged inside the outer shell in a direction intersecting the axial direction of the bundle of the tubes and provided with a plurality of the through holes through which respective tubes of the bundle are passed, and a part or all of the through holes have such a shape that a portion of the outer peripheral face of the tube comes into contact with a portion of the inner peripheral face of the through hole, and the gap for passing the second heat exchanging fluid is formed between the other portion of the inner peripheral face and the outer peripheral face of the tube. Therefore, the multi-tube heat exchanger according to the invention has the following advantages;
  • An outer shell 1 mainly includes a body part 1a in a cylindrical shape, and head parts 1b, 1c in a semicircular shape which are continued from both ends of the body part 1a.
  • the head parts 1b, 1c are respectively provided with fluid ports 3b, 3c which are open to the exterior and communicated with the spaces defined by the partition walls 2b, 2c.
  • the body part 1a is provided with fluid ports 4a, 5a which are open to the exterior and communicated with the spaces defined by the partition walls 2b, 2c.
  • a number of tubes 6 bundled into a tube bundle are bridged between the partition walls 2b, 2c. Both ends of the tubes are respectively communicated with the spaces inside the head parts 1b, 1c which are defined by the partition walls 2b, 2c.
  • baffle plates 7, 7 for regularly disturbing a flow of the fluid are arranged in a spaced relation in an axial direction of the tubes 6, and the fluid can move across the baffle plates 7, 7 through openings (not shown) which are provided in a part thereof.
  • Each of the baffle plates 7, 7 is provided with through holes 8, 8 in regular arrangement, through which the tubes 6 are adapted to pass.
  • the though holes 8 are formed by piercing the baffle plate 7 by laser work or so, and has a substantially rhombic shape which is symmetrical with respect to a point, as shown in Figs. 2A and 2B.
  • Inner faces of a pair of opposed corner portions 8a at a larger opening degree are in a rounded shape having a larger curvature than a curvature of an outer peripheral shape of the tube 6.
  • the other pair of opposed corner portions 8b at a smaller opening degree are in a rounded shape having a smaller curvature than the curvature of the outer peripheral shape of the tube 6.
  • a distance between the pair of the opposed corner portions 8a, 8a which have the larger opening degree is substantially equal to an outer diameter of the tube 6 at the largest position, and slightly larger than the tube 6.
  • the above described distance may be determined taking these factors into consideration.
  • gaps between the opposed corner portions 8b, 8b and the outer wall of the tube 6 become gradually larger at both sides of the opposed corner portions 8a, 8a toward the opposed corner portions 8b, 8b, and thus, gaps 9 which will be the largest at the opposed corner portions 8b, 8b can be obtained.
  • the multi-tube heat exchanger in the embodiment of the invention is constructed in the above described manner.
  • a first heat exchanging fluid to be subjected to heat exchange (for example, cold water) is introduced from one of the fluid ports in the head parts 1b, 1c, for example the fluid port 3b, into the head part 1b. Then, the first heat exchanging fluid moves from the space inside the head part 1b through the tubes 6 into the space inside the other head part 1c, and discharged from the fluid port 3c to the exterior.
  • the second heat exchanging fluid (for example, hot water) is introduced from the fluid port 4a into the space inside the body part 1a.
  • the second heat exchanging fluid moves while it is guided by surfaces of the baffle plates 7 and the openings which are not shown, and comes into contact with the outer walls of the tubes 6 thereby to conduct the heat exchange with the first heat exchanging fluid which flows inside the tubes 6.
  • a portion of the second heat exchanging fluid will pass the baffle plates 7 through the gaps 9 of the through holes 8 through which the tubes 6 are passed. Because the second fluidmoves along the outer walls of the tubes 6 on this occasion, the heat exchange between the second fluid and the tubes 6 will be further promoted.
  • the second fluid passes the baffle plates 7 through the gaps 9, it is possible to decrease the fluid resistance of the second heat exchanging fluid, and a drop of flow rate of the second heat exchanging fluid can be prevented generally. As the results, heat exchanging efficiency by the second heat exchanging fluid will be improved.
  • the tubes 6 can be reliably held by the through holes 8 with high stability and high dimensional accuracy, and therefore, regularity of arranging the tube bundle can be maintained even though pitch between the through holes are minimized. As the results, the heat exchanger can be made compact.

Landscapes

  • 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)
EP05002286A 2004-02-04 2005-02-03 Mehrrohrwärmetauscher Withdrawn EP1562016A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004027861A JP2005221118A (ja) 2004-02-04 2004-02-04 多管式熱交換器
JP2004027861 2004-02-04

Publications (2)

Publication Number Publication Date
EP1562016A2 true EP1562016A2 (de) 2005-08-10
EP1562016A3 EP1562016A3 (de) 2010-09-15

Family

ID=34675494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05002286A Withdrawn EP1562016A3 (de) 2004-02-04 2005-02-03 Mehrrohrwärmetauscher

Country Status (4)

Country Link
US (1) US20050167089A1 (de)
EP (1) EP1562016A3 (de)
JP (1) JP2005221118A (de)
KR (1) KR100640301B1 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4717794B2 (ja) * 2006-12-14 2011-07-06 共和真空技術株式会社 真空装置における蒸気凝結器
US8365812B2 (en) * 2007-06-27 2013-02-05 King Fahd University Of Petroleum And Minerals Shell and tube heat exchanger
CN101706227B (zh) * 2009-11-27 2013-01-02 北京化工大学 一种无缺口折流板管壳式换热器
JP5393606B2 (ja) * 2010-07-12 2014-01-22 株式会社Ｃｋｕ 熱交換器
CN102338507A (zh) * 2010-07-22 2012-02-01 浙江耀能科技有限公司 一种冰水蓄能蒸发器
DE212012000286U1 (de) * 2012-09-26 2015-06-17 Trane International Inc. Unterkühler mit hoher Leistung und wenig Kühlmittel
CN103063056B (zh) * 2012-12-28 2015-09-09 广州以惠节能科技有限公司 一种管壳式换热器
CN103808174A (zh) * 2013-11-21 2014-05-21 无锡爱科换热器有限公司 管壳式换热器
JP6423221B2 (ja) * 2014-09-25 2018-11-14 三菱重工サーマルシステムズ株式会社 蒸発器及び冷凍機
RU2579788C1 (ru) * 2014-12-30 2016-04-10 Открытое акционерное общество "АКМЭ - инжиниринг" Устройство дистанционирования трубок теплообменного аппарата (варианты)
CN104567519A (zh) * 2015-01-04 2015-04-29 沈阳化工大学 一种能消除传热死区的换热器折流板
CN105716448B (zh) * 2016-04-06 2019-11-26 太原理工大学 一种百叶形折流板固定管板式换热器及加工安装方法
CN106989631A (zh) * 2017-03-21 2017-07-28 茂名重力石化装备股份公司 一种月形折流板及管壳式换热器
CN108895864B (zh) * 2018-04-11 2020-02-07 南京师范大学 折流板组件和包括此组件的管壳式换热器
CN108489322A (zh) * 2018-05-08 2018-09-04 北京石油化工工程有限公司 管束支撑结构及列管式固定床反应器
CN110849180A (zh) * 2018-08-21 2020-02-28 洛阳超蓝节能技术有限公司 换热管的截面呈非圆形的换热器及其换热方法
CN110849181A (zh) * 2018-08-21 2020-02-28 洛阳超蓝节能技术有限公司 气气换热器及其换热方法
US11656036B2 (en) * 2019-03-14 2023-05-23 Carrier Corporation Heat exchanger and associated tube sheet
CN115516271A (zh) * 2021-01-29 2022-12-23 三菱重工业株式会社 换热器
EP4374126A1 (de) * 2021-07-17 2024-05-29 Lindain Engineering, Inc. Deflektor- und gitterträgeranordnungen zur verwendung in wärmetauschern und wärmetauscher mit solchen anordnungen darin
CN114111386B (zh) * 2021-12-01 2024-10-11 浙江银轮机械股份有限公司 Egr冷却器

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JPH056993A (ja) 1990-11-09 1993-01-14 Matsushita Electron Corp 電荷転送装置とその製造方法および駆動方法
JPH06185891A (ja) 1992-03-05 1994-07-08 Phillips Petroleum Co 管形熱交換器の棒バッフル
US5505254A (en) * 1993-08-19 1996-04-09 Sanden Corporation Heat exchanger having tube support plate
GB2313438A (en) 1996-05-22 1997-11-26 Usui Kokusai Sangyo Kk EGR gas cooler

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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57202497A (en) * 1981-06-08 1982-12-11 Hitachi Ltd Heat exchanger
JPH056993A (ja) 1990-11-09 1993-01-14 Matsushita Electron Corp 電荷転送装置とその製造方法および駆動方法
JPH06185891A (ja) 1992-03-05 1994-07-08 Phillips Petroleum Co 管形熱交換器の棒バッフル
US5505254A (en) * 1993-08-19 1996-04-09 Sanden Corporation Heat exchanger having tube support plate
GB2313438A (en) 1996-05-22 1997-11-26 Usui Kokusai Sangyo Kk EGR gas cooler

Also Published As

Publication number Publication date
JP2005221118A (ja) 2005-08-18
US20050167089A1 (en) 2005-08-04
EP1562016A3 (de) 2010-09-15
KR20050079222A (ko) 2005-08-09
KR100640301B1 (ko) 2006-10-31

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