EP0032224A1 - Wassergekühlter Ölkühler - Google Patents

Wassergekühlter Ölkühler Download PDF

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Publication number
EP0032224A1
EP0032224A1 EP80108005A EP80108005A EP0032224A1 EP 0032224 A1 EP0032224 A1 EP 0032224A1 EP 80108005 A EP80108005 A EP 80108005A EP 80108005 A EP80108005 A EP 80108005A EP 0032224 A1 EP0032224 A1 EP 0032224A1
Authority
EP
European Patent Office
Prior art keywords
oil
fin
oil flow
fin plate
oil cooler
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Withdrawn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
EP80108005A
Other languages
English (en)
French (fr)
Inventor
Takahiro Sekine
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.)
Taisei Kogyo KK
Original Assignee
Taisei Kogyo KK
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 Taisei Kogyo KK filed Critical Taisei Kogyo KK
Publication of EP0032224A1 publication Critical patent/EP0032224A1/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Withdrawn legal-status Critical Current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
    • 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
    • F28F1/32—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 having portions engaging further tubular elements
    • F28F1/325—Fins with openings

Definitions

  • This invention relates to a water-cooling oil cooler, and more particularly to an oil cooler comprising at least one tube which is extended lengthwise of a sealed shell filled with oil and through which water flows to cool the oil.
  • a tube with low fins serves to cool oil more effectively than does a so-called bare tube which has no fins since the low fins increase cooling efficiency.
  • a straight tube with so-called middle fins or so-called high fins mounted on the outer periphery of the tube.
  • the conventional water-cooling oil cooler comprising one or more straight tubes with fins indeed possesses a high cooling efficiency.
  • the oil cooler is rather costly because it is time-consuming to mount and fix fins on each straight tube. It is thus very expensive particularly if it has many cooling tubes with fins.
  • a water-cooling oil cooler comprises a plurality of so-called fin plates and at least one cooling tube.
  • the fin plates are arranged parallel to one another at regular intervals and have each at least one hole.
  • the cooling tube extends through the holes of the fin plates in the direction perpendicular to the fin plates.
  • Each of the fin plates has a number of oil flowing holes and a number of oil flow retarding members.
  • the oil flow holes are made and the oil flow retarding members are formed by pressing the fin plate.
  • the oil flow retarding members protrude from one side of the fin plate.
  • Each oil flow retarding member and the fin plate define at least one opening between them. The opening member causes oil flowing through the oil flow hole to flow through the opening in at least one direction parallel to the fin plate.
  • both surfaces of each fin plate provide a large heat conducting area common to the cooling tubes and the fin plates can be made identical by pressing, i.e. an easy process.
  • the oil cooler of the above-mentioned structure has a high cooling efficiency and can be manufactured at a low cost.
  • the oil flow retarding members help enhance the cooling efficiency of the oil cooler.
  • These members are so positioned as to face the respective oil flow holes.
  • the oil is made to flow slowly and remains for a long time within a sealed shell which houses the cooling tubes and the fin plates. Since the oil flows slowly, the cooling water draws the heat from the oil more effectively than in the conventional water-cooling oil coolers.
  • a water-cooling oil cooler embodying this invention comprises a sealed shell 11.
  • the shell 11 comprises a hollow cylinder 12, a cover 15 secured to the right end of the cylinder 12 and a cover 16 secured to the left end of the cylinder 12.
  • a partition 13 is sandwiched between the cylinder 12 and the cover 15, and another partition 14 is sandwiched between the cylinder 12 and the cover 16.
  • a tube 17 is connected to the outer periphery of the cylinder 12 and communicates with the interior of the cylinder, thus defining an inlet port.
  • a tube 18 is connected to the outer periphery of the cylinder 12 and communicates with the interior of the cylinder 12, thus defining an outlet port.
  • a drain pipe 19 is connected to the outer periphery of the cylinder 12 and communicates with the interior of the cylinder 12 so as to allow the oil to be discharged from the cylinder 12.
  • the tubes 17 and 18 are connected to the oil circuit of, for example, a machine which uses oil.
  • the space defined by the partition 13 and the cover 15 is divided by a partition 15a into a water inlet chamber 22 and a water outlet chamber 23.
  • the cover 15 has an inlet port 20 which opens to the water inlet chamber 22 and an outlet port 21 which opens to the water outlet chamber 23.
  • water to cool oil flows into the chamber 22 through the inlet port 20 and flows out of the chamber 23 through the outlet port 21.
  • the space or a chamber 24 is defined by the partition 14 and the cover 16. In the chamber 24 the cooling water circulates.
  • a number of cooling tubes 26 extend parallel to one another in the axial direction of the cylinder 12.
  • Each of these tubes 25 is supported by the partition 13 at one end and by the partition 14 at the other end and communicates with the chamber or 23 at one end and with the chamber 24 at the other end.
  • a number of metal fin plates 26 are arranged between the partitions 13 and 14 at short regular intervals in the axial direction of the cylinder 12.
  • the fin plates 26 are thin discs which are parallel to one another and whose diameter is substantially equal to the inner diameter of the cylinder 12.
  • each of the fin plates 26 has an outer profile which is substantially identical with the cross section of the interior of the sealed shell 11.
  • the fin plates 26 fit to the inner periphery of the cylinder 12.
  • Each of the fin plates 26 has holes 27 as shown in Fig. 3, which have been made by pressing. Through these holes 27 of each fin plate 26 the cooling tubes 25 extend in the axial direction of the cylinder 12.
  • each of the fin plates 26 has a number of oil flow holes 28 and a number of oil flow retarding members 29.
  • the holes 28 are made and the member 29 are formed by pressing the fin plate 26.
  • the oil flow retarding members 29 has a U-shaped sectional profile and protrude from one side of the plate 26.
  • Oil to be cooled enters the sealed shell 11 through the tube 17 and flows through the oil flow holes 27 of the fin plates 26 toward the tube 18.
  • water to cool the oil flows through the cooling tubes 25 and draws the heat from the oil. More specifically, the cooling water enters the inlet chamber 22 through the inlet port 20, flows to the chamber 24 through the cooling chambers which communicate with the inlet chamber 22, further flows from the chamber 24 to the outlet chamber 23 through the cooling tubes 25 which communicate with the outlet chamber 23, and finally is discharged from the outlet chamber 23 through the outlet port 21.
  • Fig. 6 is a sectional view taken along line 6-6 of Fig. 5.
  • the members 29 of each fin plate 26 protrude from one side of the fin plate 26 and have a U -shaped sectional profile. That portion of each member 29 which corresponds to the bottom of letter U extends along the respective elongated oil flow hole 28 as illustrated in Fig. 6, wherein numerals 30 designate a pair of openings defined by the members 29 and the fin plate 26.
  • the oil flows through both openings 30 in the opposite directions.
  • the oil passes through the oil flow hole 28 in the direction perpendicular to the fin plate 26, hits against the member 29, flows upward though one opening 30 and downward through the other opening 30 and further flows to the next fin plate 26, as indicated by arrows in Fig. 6.
  • the members 29 function as buffer plates. They change the direction of oil flow and retards the flow of oil. The oil therefore flows slowly through the spaces defined by the cooling tubes 25 and the fin plates 26. The flow of oil is retarded effectively no matter whether or not the oil flow holes 28 of one fin plate 26 have the same shape and size as those of the next fin plates 26. Thus, the fin plates 26 can be made completely identical. This helps reduce the cost of the oil cooler particularly when, as shown in Fig. 1, a large number of fin lates 26 are used. Since the flow of oil is successfully retarded, more heat is drawn from the oil to the cooling water than otherwise. This helps enhance the cooling efficiency of the oil cooler.
  • each fin plate 26 has a number of tubular flanges 31 as shown in Fig. 5.
  • the flange 31 is formed around the peripheral edge of the hole 27 by pressing the plate 26 to make the holes 27.
  • the cooling tubes 25 are inserted into holes 27 and fitted to the flanges 31 of each fin plate 26. The heat transmitted from the oil to each fin plate 26 is more effectively transmitted to the cooling water flowing through the tubes 25 than in case the flanges 31 are not provided.
  • the distance between the adjacent fin plates 26 is 2.5 to 3.0 mm.
  • the oil flow retarding members 29 extend from the plate 26 about 2.0 mm, and the flanges 31 are about 2.0 mm long.
  • Each of the fin plates 26 may have such oil flow holes and oil flow retarding members as shown in Figs. 7 to 10, which differ in shape from the oil flow holes 28 and members 29 illustrated in Figs. 2, 3, 4, 5 and 6.
  • the fin plate 26 shown in Figs. 7 and 8 has rectangular oil flow holes 28 and pocket-shaped members 29 with an opening 30.
  • the holes 28 are made and the members 29 are formed by pressing the plate 26.
  • the fin plate 26 shown in Figs. 9 and 10 has semicircular oil flow holes 28 and oil flow retarding members 29 shaped like round pockets and having an opening 30.
  • the holes 28 are made and the members 29 are formed by pressing the plate 26.
  • the fin plates 26 can be provided by a simple and easy process, i.e. pressing. This also helps reduce the cost of the oil coolers according to this invention.
  • the water-cooling oil cooler of this invention is advantageous.
  • the fin plates provide an extremely large area of heat conduction.
  • the oil flow retarding members integrally formed of the fin plates function as buffer plates, thus retarding the flow of oil thereby to achieve an effective heat exchange between the oil and the cooling water. Since the oil flow retarding members of each fin plate are identical with those of any other fin plate, the oil cooler can be manufactured at a low cost.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP80108005A 1979-12-27 1980-12-18 Wassergekühlter Ölkühler Withdrawn EP0032224A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP172550/79 1979-12-27
JP17255079A JPS5694194A (en) 1979-12-27 1979-12-27 Water cooling type oil cooler

Publications (1)

Publication Number Publication Date
EP0032224A1 true EP0032224A1 (de) 1981-07-22

Family

ID=15943939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80108005A Withdrawn EP0032224A1 (de) 1979-12-27 1980-12-18 Wassergekühlter Ölkühler

Country Status (2)

Country Link
EP (1) EP0032224A1 (de)
JP (1) JPS5694194A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532409A1 (fr) * 1981-09-14 1984-03-02 Sueddeutsche Kuehler Behr Echangeur de chaleur
EP0410247A2 (de) * 1989-07-24 1991-01-30 Hoechst CeramTec Aktiengesellschaft Rippenrohrwärmetauscher
US5048596A (en) * 1990-01-02 1991-09-17 Mccord Heat Transfer Corporation Oil cooler
US6102104A (en) * 1996-12-28 2000-08-15 Sato; Kazuo Die-cushion oil pressure locking device
DE102007036308A1 (de) * 2007-07-31 2009-02-05 Behr Gmbh & Co. Kg Rippe für einen Wärmetauscher
CN101726195B (zh) * 2009-10-31 2012-08-22 华南理工大学 一种余热回收用不锈钢翅片管换热器
CN112857127A (zh) * 2021-01-18 2021-05-28 中国神华煤制油化工有限公司 自清洗封头盖及换热设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018095239A (ja) * 2016-12-14 2018-06-21 株式会社ケーヒン・サーマル・テクノロジー 蓄冷機能付きエバポレータ

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3397741A (en) * 1966-02-21 1968-08-20 Hudson Engineering Corp Plate fin tube heat exchanger

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS514413Y2 (de) * 1971-01-21 1976-02-07
JPS4942944U (de) * 1972-07-14 1974-04-15

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3397741A (en) * 1966-02-21 1968-08-20 Hudson Engineering Corp Plate fin tube heat exchanger

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532409A1 (fr) * 1981-09-14 1984-03-02 Sueddeutsche Kuehler Behr Echangeur de chaleur
EP0410247A2 (de) * 1989-07-24 1991-01-30 Hoechst CeramTec Aktiengesellschaft Rippenrohrwärmetauscher
EP0410247A3 (en) * 1989-07-24 1991-07-17 Hoechst Ceramtec Aktiengesellschaft Heat exchanger comprising a finned tube
US5238057A (en) * 1989-07-24 1993-08-24 Hoechst Ceramtec Aktiengesellschaft Finned-tube heat exchanger
US5048596A (en) * 1990-01-02 1991-09-17 Mccord Heat Transfer Corporation Oil cooler
US6102104A (en) * 1996-12-28 2000-08-15 Sato; Kazuo Die-cushion oil pressure locking device
DE102007036308A1 (de) * 2007-07-31 2009-02-05 Behr Gmbh & Co. Kg Rippe für einen Wärmetauscher
CN101726195B (zh) * 2009-10-31 2012-08-22 华南理工大学 一种余热回收用不锈钢翅片管换热器
CN112857127A (zh) * 2021-01-18 2021-05-28 中国神华煤制油化工有限公司 自清洗封头盖及换热设备

Also Published As

Publication number Publication date
JPS5694194A (en) 1981-07-30

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19801218

AK Designated contracting states

Designated state(s): DE FR GB

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19830119

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SEKINE, TAKAHIRO