JPH04236097A - 伝熱管 - Google Patents
伝熱管Info
- Publication number
- JPH04236097A JPH04236097A JP3014857A JP1485791A JPH04236097A JP H04236097 A JPH04236097 A JP H04236097A JP 3014857 A JP3014857 A JP 3014857A JP 1485791 A JP1485791 A JP 1485791A JP H04236097 A JPH04236097 A JP H04236097A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- heat transfer
- small
- cavity
- heat exchanger
- 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.)
- Granted
Links
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 230000004907 flux Effects 0.000 abstract description 14
- 239000003507 refrigerant Substances 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000009835 boiling Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
- F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
- F28F13/187—Heat-exchange surfaces provided with microstructures or with porous coatings especially adapted for evaporator surfaces or condenser surfaces, e.g. with nucleation sites
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/26—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being integral with the element
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
め要約のデータは記録されません。
Description
る熱交換器、例えば冷凍機の蒸発器に使用される伝熱管
に関するものである。
る伝熱管としては、ローフィンチューブに更に機械加工
を施し、リエントラントな空洞部を形成することで、残
留気泡により沸騰が連続的に行われ高い熱伝達率が得ら
れる、特願昭56−211772号の様な伝熱管が知ら
れている。前述の沸騰用伝熱管はローフィン管等と比較
した場合には改善されているものの、低熱流束時の沸騰
熱伝達率の低下が著しい。近年、低温熱源の有効利用等
を行うため、低熱流束時においても高い伝熱性能を有す
る伝熱管の要望が強まっている。同時に機器の負荷変動
にも対応するため、低熱流束時の性能改善のみでなく、
高熱流束域においてもその性能をそこなわない、広い範
囲にわたって安定した伝熱性能を有する伝熱管が必要で
ある。
について検討の結果、低熱流束時において高い伝熱性能
を有し、かつ高熱流束時においても性能をそこなわない
安定した性能の伝熱管を開発したものである。
所定のピッチを有して、環状または螺旋状に管周方向に
連続した空洞部を設けると共に、該空洞部はその長手方
向に沿って外部と連通し、且つその巾を規制された狭い
開口部を有し、管軸方向に隣接する該開口部相互間を結
ぶように管周方向に対して所定のピッチで、管軸方向に
小空洞部と小開口部を設けた伝熱管において、該空洞部
の底部に、その両側壁をつなぐ小突起を設けたことを特
徴とする伝熱管である。すなわち本発明は、図1および
図2に示すように伝熱管の管外表面1に所定のピッチで
環状または螺旋状に管周方向に連続した空洞部3を設け
ると共に、該空洞部はその長手方向に沿って外部と連通
し、且つその巾を規制された狭い開口部2を有し、管軸
方向に隣接する該開口部相互間を結ぶように管周方向に
対して所定のピッチで、管軸方向に小空洞部5と小開口
部4を設け、さらに該空洞部3の底部にその両側壁をつ
なぐ小突起6を設けた伝熱管である。しかして上記の空
洞部3のピッチ(P)は1吋当り25個〜45個の範囲
で設けるのが好ましく、また小空洞部5のピッチ(P′
)は1吋当り60個〜100個の範囲で存在するのが好
ましい。さらに上記の空洞部の底部に設ける小突起6の
高さ(h)は、空洞部高さの10〜40%が好ましく、
低すぎると低熱流束域における伝熱性能が悪く、高すぎ
ると高熱流束時に液の補充を阻害する。また小突起の管
周方向のピッチ(P″)は0.5〜4.5mmとするこ
とが望ましい。
ことで、伝熱面積の増大、凸凹部による気泡発生の助長
、突起角部による連続沸騰時の薄膜維持効果などの効果
があり、加えて小突起が空洞部を横ぎる形で設けられて
いるため、空洞部の底部に小区画が形成されフィン根元
径部に近い部分で空洞部内の液の移動を抑制することが
出来、特に低熱流束域において、液の局所的な過熱を容
易に行なわせることで、熱伝達率の向上を図ったもので
ある。
図3に示すようなフィン成形用ディスク7を押し付け回
転させながら、フィン9を形成させると同時にフィンの
根元に小突起6を形成した。続いて転造工具(10〜5
0)によりフィンの先端を順次押しつぶすように加工を
施し、図1〜2に示す伝熱管を作製した。この伝熱管は
管軸方向に1吋当り40個の開口部2と空洞部3を有し
、その空洞部の底部に両側のフィンをつなぐような形で
、管軸とほぼ平行な小突起6有し、且つ上記開口部を結
ぶように管軸方向に連なる多数の小開口部4と小空洞部
5を有するものである。この小突起6は、その高さが高
すぎると高熱流束時に液の補充を阻害し、低すぎると本
発明における作用が見込めず、その高さが空洞部高さの
10〜40%で顕著な効果が認められた。また、その管
周方向ピッチは0.5〜4.5mmとすることが望まし
い。図4は上記の本発明伝熱管と従来の突起のない伝熱
管の沸騰熱伝達率を比較したもので本発明の伝熱管は従
来品に比べ、低熱流束域において20%以上性能向上す
ることが判った。尚、前述の実施例では、小突起は管軸
とほぼ平行としたが、この小突起は空洞部の両側壁をつ
なぎ、空洞部底部に小区画を設けることが可能なもので
あれば良く、その形状は管軸に対し、ねじれ角を持って
も良く、またV字状等でも良い。
管は、低熱流束域において特に高い伝熱性能を示すもの
であり、本伝熱管を使用する熱交換器の小型化、高性能
化に寄与しうる効果がある。
視図である。
ある。
ある。
Claims (1)
- 【請求項1】 管の外表面に所定のピッチを有して、
環状または螺旋状に管周方向に連続した空洞部を設ける
と共に、該空洞部はその長手方向に沿って外部と連通し
、且つその巾を規制された狭い開口部を有し、管軸方向
に隣接する該開口部相互間を結ぶように管周方向に対し
て所定のピッチで、管軸方向に小空洞部と小開口部を設
けた伝熱管において、該空洞部の底部に、その両側壁を
つなぐ小突起を設けたことを特徴とする伝熱管。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3014857A JP2788793B2 (ja) | 1991-01-14 | 1991-01-14 | 伝熱管 |
KR1019910025550A KR940007194B1 (ko) | 1991-01-14 | 1991-12-30 | 전열관 |
US07/819,242 US5186252A (en) | 1991-01-14 | 1992-01-13 | Heat transmission tube |
DE69200089T DE69200089T2 (de) | 1991-01-14 | 1992-01-14 | Wärmeübertragungsrohr. |
EP92100503A EP0495453B1 (en) | 1991-01-14 | 1992-01-14 | Heat transmission tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3014857A JP2788793B2 (ja) | 1991-01-14 | 1991-01-14 | 伝熱管 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04236097A true JPH04236097A (ja) | 1992-08-25 |
JP2788793B2 JP2788793B2 (ja) | 1998-08-20 |
Family
ID=11872702
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3014857A Expired - Lifetime JP2788793B2 (ja) | 1991-01-14 | 1991-01-14 | 伝熱管 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5186252A (ja) |
EP (1) | EP0495453B1 (ja) |
JP (1) | JP2788793B2 (ja) |
KR (1) | KR940007194B1 (ja) |
DE (1) | DE69200089T2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5577555A (en) * | 1993-02-24 | 1996-11-26 | Hitachi, Ltd. | Heat exchanger |
KR20160125348A (ko) * | 2014-02-27 | 2016-10-31 | 빌란트-베르케악티엔게젤샤프트 | 금속 열교환기 관 |
JP2021134952A (ja) * | 2020-02-25 | 2021-09-13 | 株式会社コベルコ マテリアル銅管 | 沸騰型伝熱管 |
Families Citing this family (57)
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---|---|---|---|---|
US5203404A (en) * | 1992-03-02 | 1993-04-20 | Carrier Corporation | Heat exchanger tube |
DE4301668C1 (de) * | 1993-01-22 | 1994-08-25 | Wieland Werke Ag | Wärmeaustauschwand, insbesondere für Sprühverdampfung |
CA2161296C (en) * | 1994-11-17 | 1998-06-02 | Neelkanth S. Gupte | Heat transfer tube |
ES2171519T3 (es) * | 1994-11-17 | 2002-09-16 | Carrier Corp | Tubo de transferencia de calor. |
US5697430A (en) * | 1995-04-04 | 1997-12-16 | Wolverine Tube, Inc. | Heat transfer tubes and methods of fabrication thereof |
JP3303599B2 (ja) * | 1995-05-17 | 2002-07-22 | 松下電器産業株式会社 | 伝熱管 |
WO1997029223A1 (en) | 1996-02-09 | 1997-08-14 | Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College | High aspect ratio, microstructure-covered, macroscopic surfaces |
US5681661A (en) * | 1996-02-09 | 1997-10-28 | Board Of Supervisors Of Louisiana State University And Agricultural And Mechanical College | High aspect ratio, microstructure-covered, macroscopic surfaces |
US5996686A (en) * | 1996-04-16 | 1999-12-07 | Wolverine Tube, Inc. | Heat transfer tubes and methods of fabrication thereof |
US6176302B1 (en) * | 1998-03-04 | 2001-01-23 | Kabushiki Kaisha Kobe Seiko Sho | Boiling heat transfer tube |
US7147045B2 (en) * | 1998-06-08 | 2006-12-12 | Thermotek, Inc. | Toroidal low-profile extrusion cooling system and method thereof |
US6935409B1 (en) * | 1998-06-08 | 2005-08-30 | Thermotek, Inc. | Cooling apparatus having low profile extrusion |
US6176301B1 (en) * | 1998-12-04 | 2001-01-23 | Outokumpu Copper Franklin, Inc. | Heat transfer tube with crack-like cavities to enhance performance thereof |
US6981322B2 (en) | 1999-06-08 | 2006-01-03 | Thermotek, Inc. | Cooling apparatus having low profile extrusion and method of manufacture therefor |
US7305843B2 (en) | 1999-06-08 | 2007-12-11 | Thermotek, Inc. | Heat pipe connection system and method |
DE19945581B4 (de) * | 1999-09-23 | 2014-04-03 | Alstom Technology Ltd. | Turbomaschine |
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US9113577B2 (en) | 2001-11-27 | 2015-08-18 | Thermotek, Inc. | Method and system for automotive battery cooling |
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US7198096B2 (en) | 2002-11-26 | 2007-04-03 | Thermotek, Inc. | Stacked low profile cooling system and method for making same |
US20040010913A1 (en) * | 2002-04-19 | 2004-01-22 | Petur Thors | Heat transfer tubes, including methods of fabrication and use thereof |
DE10328748B4 (de) * | 2003-06-25 | 2017-12-14 | Mahle International Gmbh | Wärmeübertrager, insbesondere Ladeluftkühler für Nutzfahrzeuge |
US7254964B2 (en) * | 2004-10-12 | 2007-08-14 | Wolverine Tube, Inc. | Heat transfer tubes, including methods of fabrication and use thereof |
US20070028649A1 (en) * | 2005-08-04 | 2007-02-08 | Chakravarthy Vijayaraghavan S | Cryogenic air separation main condenser system with enhanced boiling and condensing surfaces |
CN100365369C (zh) * | 2005-08-09 | 2008-01-30 | 江苏萃隆铜业有限公司 | 蒸发器热交换管 |
CN100437011C (zh) * | 2005-12-13 | 2008-11-26 | 金龙精密铜管集团股份有限公司 | 一种电制冷机组用满液式铜蒸发换热管 |
CN100458344C (zh) * | 2005-12-13 | 2009-02-04 | 金龙精密铜管集团股份有限公司 | 一种电制冷满液式机组用铜冷凝换热管 |
US8534645B2 (en) | 2007-11-13 | 2013-09-17 | Dri-Steem Corporation | Heat exchanger for removal of condensate from a steam dispersion system |
CA2644003C (en) | 2007-11-13 | 2014-09-23 | Dri-Steem Corporation | Heat transfer system including tubing with nucleation boiling sites |
DE102008013929B3 (de) | 2008-03-12 | 2009-04-09 | Wieland-Werke Ag | Verdampferrohr mit optimierten Hinterschneidungen am Nutengrund |
CN100547339C (zh) * | 2008-03-12 | 2009-10-07 | 江苏萃隆精密铜管股份有限公司 | 一种强化传热管及其制作方法 |
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CA2931618C (en) | 2013-11-26 | 2021-11-23 | Dri-Steem Corporation | Steam dispersion system |
CA2943020C (en) | 2015-09-23 | 2023-10-24 | Dri-Steem Corporation | Steam dispersion system |
DE102016006914B4 (de) | 2016-06-01 | 2019-01-24 | Wieland-Werke Ag | Wärmeübertragerrohr |
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DE202020005625U1 (de) | 2020-10-31 | 2021-11-10 | Wieland-Werke Aktiengesellschaft | Metallisches Wärmeaustauscherrohr |
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EP0222100B1 (de) * | 1985-10-31 | 1989-08-09 | Wieland-Werke Ag | Rippenrohr mit eingekerbtem Nutengrund und Verfahren zu dessen Herstellung |
US4715433A (en) * | 1986-06-09 | 1987-12-29 | Air Products And Chemicals, Inc. | Reboiler-condenser with doubly-enhanced plates |
SU1384912A1 (ru) * | 1986-10-28 | 1988-03-30 | Производственное Объединение "Белгородский Завод Энергетического Машиностроения" | Теплообменна труба |
-
1991
- 1991-01-14 JP JP3014857A patent/JP2788793B2/ja not_active Expired - Lifetime
- 1991-12-30 KR KR1019910025550A patent/KR940007194B1/ko not_active IP Right Cessation
-
1992
- 1992-01-13 US US07/819,242 patent/US5186252A/en not_active Expired - Lifetime
- 1992-01-14 EP EP92100503A patent/EP0495453B1/en not_active Revoked
- 1992-01-14 DE DE69200089T patent/DE69200089T2/de not_active Revoked
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5577555A (en) * | 1993-02-24 | 1996-11-26 | Hitachi, Ltd. | Heat exchanger |
KR20160125348A (ko) * | 2014-02-27 | 2016-10-31 | 빌란트-베르케악티엔게젤샤프트 | 금속 열교환기 관 |
JP2017501362A (ja) * | 2014-02-27 | 2017-01-12 | ヴィーラント ウェルケ アクチーエン ゲゼルシャフトWieland−Werke Aktiengesellschaft | 金属製の熱交換器配管 |
JP2021134952A (ja) * | 2020-02-25 | 2021-09-13 | 株式会社コベルコ マテリアル銅管 | 沸騰型伝熱管 |
Also Published As
Publication number | Publication date |
---|---|
KR940007194B1 (ko) | 1994-08-08 |
DE69200089D1 (de) | 1994-05-11 |
KR920015114A (ko) | 1992-08-26 |
JP2788793B2 (ja) | 1998-08-20 |
EP0495453A1 (en) | 1992-07-22 |
DE69200089T2 (de) | 1994-09-01 |
EP0495453B1 (en) | 1994-04-06 |
US5186252A (en) | 1993-02-16 |
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