JPH11142088A - Heat-exchanger equipped with built-in oil cooler - Google Patents

Heat-exchanger equipped with built-in oil cooler

Info

Publication number
JPH11142088A
JPH11142088A JP30729097A JP30729097A JPH11142088A JP H11142088 A JPH11142088 A JP H11142088A JP 30729097 A JP30729097 A JP 30729097A JP 30729097 A JP30729097 A JP 30729097A JP H11142088 A JPH11142088 A JP H11142088A
Authority
JP
Japan
Prior art keywords
oil
heat exchange
exchange passage
tube
heat
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
Application number
JP30729097A
Other languages
Japanese (ja)
Other versions
JP3702619B2 (en
Inventor
Kenta Aoki
謙太 青木
Takayoshi Kataoka
敬善 片岡
Yoshitomi Matsuzaki
義富 松崎
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP30729097A priority Critical patent/JP3702619B2/en
Publication of JPH11142088A publication Critical patent/JPH11142088A/en
Application granted granted Critical
Publication of JP3702619B2 publication Critical patent/JP3702619B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • F28F9/02—Header boxes; End plates
    • F28F9/0234—Header boxes; End plates having a second heat exchanger disposed there within, e.g. oil cooler

Landscapes

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

Abstract

PROBLEM TO BE SOLVED: To make an oil inlet and an outlet uniform regardless of the capacity of an oil cooler, and also, increase/decrease the capability without changing a lower tank total length. SOLUTION: A cooling water which is introduced from an upper tank 11 and cooled, is returned to an engine from a lower tank 13. In the lower tank 13, an oil cooler 20 is arranged, and heat-exchanges an oil which is introduced from an oil inlet 22A with the cooling water, and discharges the oil from an oil outlet 23A and returns the oil to a transmission. Both of the oil inlet 22A and the oil outlet 23A are arranged on one end side of the lower tank 13, and heat-exchanging passages 20A, 20B are folded back at the other end of the lower tank 13 so that the oil which flows in from the oil inlet 22A may be folded back at the other end of the lower tank 13 and introduced to the oil outlet 23A.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明はオイルクーラ内蔵型
熱交換器に関する。The present invention relates to a heat exchanger with a built-in oil cooler.

【０００２】[0002]

【従来の技術】図４（ａ）〜（ｃ）は従来の車両用オイ
ルクーラ内蔵型熱交換器を示す。図４に示すように、ラ
ジエータ１のロアタンク２内に設けられたオイルクーラ
３は、ロアタンク２の長手方向の一端側に設けられたオ
イル入口３ａから導かれたオイルをロアタンク２の長手
方向の他端側に設けられたオイル出口３ｂに導く熱交換
通路３ｃとを有する。熱交換通路３ｃには熱交換フィン
３ｄが設けられている。熱交換通路３ｃを流れるオイル
は内側の通路２ａを流れる冷却水との間で熱交換して冷
却される。なお、１Ａは冷却水の出口である。2. Description of the Related Art FIGS. 4A to 4C show a conventional heat exchanger with a built-in oil cooler for a vehicle. As shown in FIG. 4, an oil cooler 3 provided in the lower tank 2 of the radiator 1 is configured to transfer oil guided from an oil inlet 3 a provided at one end side in the longitudinal direction of the lower tank 2 to the other end of the lower tank 2 in the longitudinal direction. A heat exchange passage 3c provided to an oil outlet 3b provided on the end side. The heat exchange passage 3c is provided with heat exchange fins 3d. The oil flowing through the heat exchange passage 3c exchanges heat with the cooling water flowing through the inner passage 2a to be cooled. In addition, 1A is an outlet of the cooling water.

【０００３】[0003]

【発明が解決しようとする課題】このような従来のオイ
ルクーラ内蔵型熱交換器では、オイル入口３ａとオイル
出口３ｂがロアタンク２の左右両端に位置する構造であ
るため、オイルを効率よく熱交換するためにはオイルク
ーラ３の全長を長くする必要があり、それに伴ないロア
タンク２の全長も長くなる傾向にあり、ラジエータ１そ
のものが大型化したり、オイルホース４の長さが長くな
る。さらに、ロアタンク２の長手方向の両端にオイル入
口３ａと出口３ｂが突出するため、ロアタンク２の全長
と対向する所定領域には他の部品を配置できず、スペー
ス効率も芳しくなかった。さらには、オイル出口３ｂと
対向する箇所に排気系などの高温部材を接近して配置す
るときは、オイルが高温部材に飛散しないようなカバー
を設ける必要がある。In such a conventional heat exchanger with a built-in oil cooler, since the oil inlet 3a and the oil outlet 3b are located at the left and right ends of the lower tank 2, the oil is efficiently exchanged. In order to achieve this, the entire length of the oil cooler 3 needs to be increased, and accordingly, the overall length of the lower tank 2 tends to be increased, so that the radiator 1 itself becomes large and the length of the oil hose 4 becomes long. Furthermore, since the oil inlet 3a and the outlet 3b protrude from both ends in the longitudinal direction of the lower tank 2, no other parts can be arranged in a predetermined area facing the entire length of the lower tank 2, and the space efficiency is not good. Further, when a high-temperature member such as an exhaust system is disposed close to the portion facing the oil outlet 3b, it is necessary to provide a cover so that oil does not scatter to the high-temperature member.

【０００４】さらに、従来のオイルクーラ内蔵型ラジエ
ータでは、ラジエータの能力が同一であってもオイルク
ーラの能力が異なるとオイルクーラの全長が異なり、し
たがって、オイル出口３ｂの位置が異なる場合がある。
この場合、オイル出口３ｂのための孔が異なるためにロ
アタンクが異なることになり、ラジエータ本体そのもの
を共通化できないという問題がある。Furthermore, in a conventional radiator with a built-in oil cooler, even if the radiator has the same capacity, if the oil cooler has a different capacity, the total length of the oil cooler may be different, and therefore the position of the oil outlet 3b may be different.
In this case, since the holes for the oil outlets 3b are different, the lower tanks are different, and there is a problem that the radiator body itself cannot be shared.

【０００５】本発明の目的は、オイルクーラの容量にか
かわりなくオイル入口と出口を一定にすることができ、
また、ロアタンク全長を変更せずにその能力を増減する
ことができるオイルクーラ内蔵型熱交換器を提供するこ
とにある。An object of the present invention is to make the oil inlet and outlet constant regardless of the capacity of the oil cooler,
Another object of the present invention is to provide a heat exchanger with a built-in oil cooler that can increase or decrease its capacity without changing the overall length of the lower tank.

【０００６】[0006]

【課題を解決するための手段】（１）実施の形態を示す
図１に対応づけて説明すると、請求項１の発明は、エン
ジン冷却水が導入される所定長さのアッパタンク１１
と、アッパタンク１１に導入された冷却水を冷却する熱
交換部１２と、この熱交換部１２で熱交換された冷却水
を受入れる所定長さのロアタンク１３と、このロアタン
ク１３内に設けられ、オイル入口から導かれて熱交換通
路を流れるオイルを冷却水と熱交換してオイル出口から
排出するオイルクーラ２０とを備えるオイルクーラ内蔵
型熱交換器に適用される。そして、上述の目的は、オイ
ル入口２２Ａとオイル出口２３Ａの双方をロアタンク１
３の所定方向の一端側に配置し、オイル入口２２Ａから
流入するオイルをロアタンク１３の他端側で折返してオ
イル出口２３Ａへ導く熱交換通路２０Ａ，２０Ｂを備え
ることにより達成される。 （２）図１に示すように、請求項２の発明におけるオイ
ルクーラ２０は、略同心状に配設された三重管２１，２
２，２３で構成され、最内側の管２１の外側と中間の管
２２の内側との間に内側の熱交換通路２０Ａが形成さ
れ、最外側の管２３の内側と中間の管２２の外側との間
に外側の熱交換通路２０Ｂが形成され、内側の熱交換通
路２０Ａの一端側に、オイル入口２２Ａまたはオイル出
口２３Ａのどちらか一方が形成され、外側の熱交換通路
２０Ｂの一端側に、オイル入口２２Ａまたはオイル出口
２３Ａの他方が形成され、他端側で、内側の熱交換通路
２０Ａと外側の熱交換通路２０Ｂとが連通しており、最
内側の管２１の内側と最外側の管２３の外側とで冷却水
と熱交換することを特徴とする。 （３）図３に示すように、請求項３の発明におけるオイ
ルクーラは、略同心状に配設された二重管で構成され、
内側の管４１の外側と外側の管４２の内側との間に第１
の熱交換通路４０Ａが形成され、外側の管４２の外側面
に第２の熱交換通路４５Ｂが形成され、第１の熱交換通
路４０Ａの一端側に、オイル入口４２Ａまたはオイル出
口４５Ａのどちらか一方が形成され、第２の熱交換通路
４５Ｂの一端側に、オイル入口４２Ａまたはオイル出口
４５Ａの他方が形成され、他端側で、第１の熱交換通路
４０Ａと第２の熱交換通路４５Ｂとが連通しており、内
側の管４１の内側と外側の管４２の外側とで冷却水と熱
交換することを特徴とする。 （４）図４に示すように、請求項４の発明は、請求項３
に記載のオイルクーラにおいて、熱交換器外側の管５２
の外周側面に形成した凹部５２ａと、この凹部５２ａを
覆う蓋部材５６とで第２の熱交換通路５０Ｂが形成され
ていることを特徴とする。Means for Solving the Problems (1) Referring to FIG. 1 showing an embodiment, the invention of claim 1 is directed to an upper tank 11 having a predetermined length into which engine cooling water is introduced.
A heat exchange unit 12 for cooling the cooling water introduced into the upper tank 11, a lower tank 13 of a predetermined length for receiving the cooling water exchanged by the heat exchange unit 12, and an oil provided in the lower tank 13. The present invention is applied to a heat exchanger with a built-in oil cooler including an oil cooler 20 that exchanges oil guided through an inlet and flowing through a heat exchange passage with cooling water and discharges the oil through an oil outlet. The purpose of the above is to connect both the oil inlet 22A and the oil outlet 23A to the lower tank 1
3 is provided at one end side in a predetermined direction, and heat exchange passages 20A and 20B are provided at the other end side of the lower tank 13 to guide the oil flowing from the oil inlet 22A to the oil outlet 23A. (2) As shown in FIG. 1, the oil cooler 20 according to the second aspect of the present invention comprises three pipes 21 and 2 arranged substantially concentrically.
2 and 23, an inner heat exchange passage 20A is formed between the outside of the innermost tube 21 and the inside of the middle tube 22, and the inside of the outermost tube 23 and the outside of the middle tube 22 are formed. An outer heat exchange passage 20B is formed therebetween, and one of the oil inlet 22A and the oil outlet 23A is formed at one end of the inner heat exchange passage 20A, and at one end of the outer heat exchange passage 20B, The other of the oil inlet 22A and the oil outlet 23A is formed, and at the other end side, the inner heat exchange passage 20A and the outer heat exchange passage 20B communicate with each other. It is characterized in that heat is exchanged with cooling water between the outside and the outside of the cooling water. (3) As shown in FIG. 3, the oil cooler according to the third aspect of the present invention is constituted by a double pipe arranged substantially concentrically,
The first between the outside of the inner tube 41 and the inside of the outer tube 42
A heat exchange passage 40A is formed, a second heat exchange passage 45B is formed on the outer surface of the outer tube 42, and one of the oil inlet 42A and the oil outlet 45A is provided at one end of the first heat exchange passage 40A. One is formed, and the other of the oil inlet 42A or the oil outlet 45A is formed at one end of the second heat exchange passage 45B, and the first heat exchange passage 40A and the second heat exchange passage 45B are formed at the other end. Are communicated with each other, and heat is exchanged with cooling water between the inside of the inner tube 41 and the outside of the outer tube 42. (4) As shown in FIG.
In the oil cooler described in the above, the pipe 52 outside the heat exchanger
A second heat exchange passage 50B is formed by a concave portion 52a formed on the outer peripheral side surface of the cover and the lid member 56 covering the concave portion 52a.

【０００７】以上の課題を解決するための手段の項で
は、実施の形態の図に対応づけて本発明を説明したが、
これにより本発明が実施の形態に限定されるものではな
い。In the section of the means for solving the above problems, the present invention has been described with reference to the drawings of the embodiments.
Thus, the present invention is not limited to the embodiment.

【０００８】[0008]

【発明の効果】本発明によれば次のような効果を奏する
ことができる。 （１）オイル入口と出口とをロアタンクの長手方向の一
端側に配置してオイルクーラの熱交換通路をロアタンク
内で折返すようにしたので、ロアタンクの全長を変更せ
ずにオイルクーラの熱交換能力を増減できる。その結
果、ラジエータの容量が同一でオイルクーラの容量が異
なる場合には、熱交換通路の折返し長さを調節すれば対
処でき、ロアタンクを共通化できてラジエータ本体を共
通化できる。 （２）オイル入口と出口とをロアタンクの長手方向の一
端側に配置したので、入口もしくは出口に接続するホー
スが短くてすむ。 （３）ロアタンクの他端側の前面には突出するものがな
いため、部品を配置するスペースが確保でき、その他端
側の前面に対向して高温部材が配置されても、カバーな
どのオイル飛散防止部材が不要となる。According to the present invention, the following effects can be obtained. (1) Since the oil inlet and outlet are arranged at one end in the longitudinal direction of the lower tank and the heat exchange passage of the oil cooler is folded back in the lower tank, the heat exchange of the oil cooler can be performed without changing the overall length of the lower tank. You can increase or decrease the ability. As a result, when the capacity of the radiator is the same and the capacity of the oil cooler is different, it can be dealt with by adjusting the turn-back length of the heat exchange passage, the lower tank can be shared, and the radiator body can be shared. (2) Since the oil inlet and the outlet are arranged at one end in the longitudinal direction of the lower tank, the hose connected to the inlet or the outlet can be short. (3) Since there is no projection on the front surface on the other end side of the lower tank, a space for disposing parts can be secured, and even if a high-temperature member is disposed opposite the front surface on the other end side, oil splatters such as covers are scattered. The prevention member is not required.

【０００９】[0009]

【発明の実施の形態】−第１の実施の形態− 図１は本発明によるオイルクーラ内蔵型熱交換器の第１
の実施の形態を示す図である。図１（ａ）に示すよう
に、ラジエータ１０は、冷却水入口１０Ａからエンジン
冷却水が導入される所定長さのアッパタンク１１と、ア
ッパタンク１１に導入された冷却水を下方に落下させて
熱交換する熱交換部１２と、この熱交換部１２で熱交換
された冷却水を受入れて冷却水出口１０Ｂから排出する
所定長さのロアタンク１３とを備えている。オイルクー
ラ２０はロアタンク１３内に設けられ、図示しないトラ
ンスミッションのオイルを冷却する。DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment FIG. 1 shows a first embodiment of a heat exchanger with a built-in oil cooler according to the present invention.
It is a figure showing an embodiment. As shown in FIG. 1A, the radiator 10 exchanges heat by lowering an upper tank 11 having a predetermined length into which engine cooling water is introduced from a cooling water inlet 10A and cooling water introduced into the upper tank 11. And a lower tank 13 having a predetermined length for receiving the cooling water exchanged by the heat exchanging unit 12 and discharging the cooling water from the cooling water outlet 10B. The oil cooler 20 is provided in the lower tank 13 and cools transmission oil (not shown).

【００１０】このオイルクーラ２０は、最内側の第１の
管２１と、中間の第２の管２２と、最外側の第３の管２
３とからなる同心状に配設された三重管構造のオイルク
ーラである。第１の管２１の内側は冷却水の通路１３ａ
とされ、第１の管２１と第２の管２２との間には内側の
熱交換通路である第１の熱交換通路２０Ａが形成され、
そこに熱交換フィン２４が配設される。この第１の熱交
換通路２０Ａには、第２の管２２の一端側に設けたオイ
ル入口２２Ａからオイルが流入する。第２の管２２と第
３の管２３との間には熱交換フィン２５が配設された外
側の熱交換通路としての第２の熱交換通路２０Ｂが形成
され、第３の管２３の一端側に設けたオイル出口２３Ａ
から冷却されたオイルが排出される。なお、第３の管２
３の長さは第２の管２２の長さより短く、第２の管２２
の長さは第１の管２１の長さより短く設定されており、
第１の管２１と第２の管２２とは一端側でその端部が揃
えられており、第１の管２１と第３の管２３とは他端側
でその端部がそろえられている。The oil cooler 20 includes an innermost first pipe 21, an intermediate second pipe 22, and an outermost third pipe 2.
3 is a concentrically arranged triple-tube oil cooler. The inside of the first pipe 21 is a cooling water passage 13a.
A first heat exchange passage 20A, which is an inner heat exchange passage, is formed between the first tube 21 and the second tube 22;
The heat exchange fins 24 are provided there. Oil flows into the first heat exchange passage 20A from an oil inlet 22A provided at one end of the second pipe 22. A second heat exchange passage 20B is formed between the second tube 22 and the third tube 23 as an outer heat exchange passage in which the heat exchange fins 25 are disposed, and one end of the third tube 23 is provided. Oil outlet 23A provided on the side
The cooled oil is discharged from the. The third tube 2
3 is shorter than the length of the second tube 22,
Is set shorter than the length of the first tube 21,
The ends of the first tube 21 and the second tube 22 are aligned at one end, and the ends of the first tube 21 and the third tube 23 are aligned at the other end. .

【００１１】第１の管２１と第２の管２２の一端には環
状の蓋２６が配設され、第１の熱交換通路２０Ａの一端
が塞がれている。第１の管２１と第３の管２３との他端
には環状の蓋２７が配設され、第１および第２の熱交換
通路２０Ａ，２０Ｂの他端が塞がれている。蓋２７側で
は第２の管２２は蓋２７と離間しており、第１の熱交換
通路２０Ａと第２の熱交換通路２０Ｂとがここで連通す
る。第３の管２３の一端には環状の蓋２８が配設され、
第２の熱交換通路２０Ｂの一端が塞がれている。An annular lid 26 is provided at one end of the first tube 21 and the second tube 22, and one end of the first heat exchange passage 20A is closed. An annular lid 27 is provided at the other end of the first tube 21 and the third tube 23, and the other ends of the first and second heat exchange passages 20A and 20B are closed. On the lid 27 side, the second pipe 22 is separated from the lid 27, and the first heat exchange passage 20A and the second heat exchange passage 20B communicate here. An annular lid 28 is provided at one end of the third tube 23,
One end of the second heat exchange passage 20B is closed.

【００１２】このような第１の実施の形態でのオイルの
流れについて説明する。図示しないトランスミッション
からオイルがオイル入口２２Ａを介して第１の熱交換通
路２０Ａに流れ込む。第１の熱交換通路２０Ａを流れる
オイルは第１の管２１の内側の通路１３ａを流れる冷却
水との間で熱交換が行われる。オイルはさらに、第１の
熱交換通路２０Ａの他端から第２の熱交換通路２０Ｂに
流れ込む。第２の熱交換通路２０Ｂを流れるオイルは第
３の管２３の外側を流れる冷却水との間で熱交換が行わ
れ、オイル出口２３Ａから排出される。The flow of oil in the first embodiment will be described. Oil flows from a transmission (not shown) into the first heat exchange passage 20A via the oil inlet 22A. The oil flowing through the first heat exchange passage 20A exchanges heat with the cooling water flowing through the passage 13a inside the first pipe 21. The oil further flows into the second heat exchange passage 20B from the other end of the first heat exchange passage 20A. The oil flowing through the second heat exchange passage 20B exchanges heat with cooling water flowing outside the third pipe 23, and is discharged from the oil outlet 23A.

【００１３】したがって、このようなオイルクーラ内蔵
型熱交換器によれば、オイルクーラ２０の熱交換通路２
０Ａ，２０Ｂをロアタンク１３内で折返すようにしたの
で、ロアタンク１３の全長を長くすることなく熱交換能
力を向上できる。また、オイル入口２２Ａと出口２３Ａ
とをオイルクーラ２０の一端側に配置したので、入口２
２Ａもしくは出口２３Ａに接続するホースが短くてす
む。さらに、ロアタンク１３の他端側の前面には突出す
るものがないため、部品を配置するスペースが確保で
き、その部位に排気系の高温部材を配置する場合でもオ
イル飛散防止用のカバーを設置する必要がなくなり、コ
スト低減、重量低減に寄与する。Therefore, according to such a heat exchanger with a built-in oil cooler, the heat exchange passage 2 of the oil cooler 20 is provided.
Since 0A and 20B are folded back in the lower tank 13, the heat exchange capacity can be improved without increasing the overall length of the lower tank 13. Also, an oil inlet 22A and an outlet 23A
Are arranged at one end of the oil cooler 20, so that the inlet 2
The hose connected to 2A or outlet 23A can be short. Further, since there is no protrusion on the front surface on the other end side of the lower tank 13, a space for arranging parts can be secured, and a cover for preventing oil scattering is provided even when a high-temperature member of the exhaust system is arranged at that position. This eliminates the need and contributes to cost reduction and weight reduction.

【００１４】さらにまた、オイル入口２２Ａとオイル出
口２３Ａの位置をロアタンク１３の一端側に並べて配置
できるので、ラジエータの能力が同一であってもオイル
クーラの能力が異なる場合には、オイルクーラ２０の熱
交換通路２０Ａ，２０Ｂの全長を変更して対処すること
ができ、ラジエータ本体そのものを共通化できるという
利点もある。Further, since the positions of the oil inlet 22A and the oil outlet 23A can be arranged side by side on one end side of the lower tank 13, even if the radiators have the same capacity but the oil coolers have different capacities, the oil cooler 20 cannot be used. There is also an advantage that the total length of the heat exchange passages 20A and 20B can be changed and the radiator body itself can be shared.

【００１５】なお、後述する第２の実施の形態以降の実
施の形態にはない作用効果として、第１の実施の形態で
は、オイルクーラ２０の外径は三重管構造のため、大き
くならざるを得ないが、第２の熱交換通路２０Ｂを形成
する第３の管２３と第２の管２２との間隔は、第１の管
２１と第２の管２２との間に形成される第１の熱交換通
路２０Ａの流路断面積と同じであればよいので、それほ
ど大きくする必要がない。したがって、オイルクーラ２
０の外径はそれほど大きくならないものである。It should be noted that, as an operational effect which does not exist in the second and subsequent embodiments described later, in the first embodiment, the outer diameter of the oil cooler 20 must be large because of the triple pipe structure. Although not obtained, the distance between the third tube 23 and the second tube 22 forming the second heat exchange passage 20B is equal to the distance between the first tube 21 and the second tube 22 formed between the first tube 21 and the second tube 22. The heat exchange passage 20A need only be the same as the cross-sectional area of the heat exchange passage 20A. Therefore, the oil cooler 2
The outer diameter of 0 is not so large.

【００１６】−第２の実施の形態− 図２は本発明によるオイルクーラ内蔵型熱交換器の第２
の実施の形態を示す図である。ラジエータ１０は図１
（ａ）に示したものと同様であり、説明を省略する。第
２の実施の形態によるオイルクーラ３０は、一端にオイ
ル入口３１Ａが形成され内部に第１の熱交換通路３０Ａ
が形成された第１の管路３１と、一端にオイル出口３２
Ａが形成され内部に第２の熱交換通路３０Ｂが形成され
た第２の管路３２とで構成されている。第１の管路３１
の第１の熱交換通路３０Ａと第２の管路３２の熱交換通
路３０Ｂとは、図２（ｃ）に示すように、入口３１Ａお
よび出口３２Ａとは反対の端部に形成された連通管路３
３で互に連通している。FIG. 2 shows a second embodiment of a heat exchanger with a built-in oil cooler according to the present invention.
It is a figure showing an embodiment. Radiator 10 is shown in FIG.
This is the same as that shown in FIG. The oil cooler 30 according to the second embodiment has an oil inlet 31A formed at one end and a first heat exchange passage 30A inside.
Is formed in a first conduit 31 and an oil outlet 32 is provided at one end.
A is formed and a second pipeline 32 in which a second heat exchange passage 30B is formed. First conduit 31
As shown in FIG. 2 (c), the first heat exchange passage 30A and the heat exchange passage 30B of the second conduit 32 have communication pipes formed at the ends opposite to the inlet 31A and the outlet 32A. Road 3
3 communicates with each other.

【００１７】第１の管路３１は内管３１１と外管３１２
とを有し、内管３１１と外管３１２との間には第１の熱
交換通路３０Ａが形成され、そこに熱交換フィン３１３
が設けられる。第２の管路３２は内管３２１と外管３２
２とを有し、内管３２１と外管３２２との間には第２の
熱交換通路３０Ｂが形成され、そこに熱交換フィン３２
３が設けられる。オイル入口３１Ａは外管３１３の一端
側に、オイル出口３２Ａは外管３２３の一端側にそれぞ
れ並んで設けられている。第１の管路３１の両端はそれ
ぞれ環状の蓋３１４，３１５で塞がれ、第２の管路３２
の両端はそれぞれ環状の蓋３２４，３２５で塞がれてい
る。The first conduit 31 includes an inner pipe 311 and an outer pipe 312.
A first heat exchange passage 30A is formed between the inner tube 311 and the outer tube 312, and heat exchange fins 313 are formed therein.
Is provided. The second pipe 32 includes an inner pipe 321 and an outer pipe 32.
2, a second heat exchange passage 30B is formed between the inner pipe 321 and the outer pipe 322, and the heat exchange fins 32 are formed therein.
3 are provided. The oil inlet 31A is provided at one end of the outer tube 313, and the oil outlet 32A is provided at one end of the outer tube 323. Both ends of the first conduit 31 are closed with annular lids 314 and 315, respectively, and the second conduit 32
Are closed by annular lids 324 and 325, respectively.

【００１８】このような第２の実施の形態でのオイルの
流れについて説明する。図示しないトランスミッション
からオイルがオイル入口３１Ａを介して第１の熱交換通
路３０Ａに流れ込むと、内管３１１の内側の冷却水通路
１３ａを流れる冷却水と外側の冷却水の間で熱交換が行
われる。第１の熱交換通路３０Ａの端部から連通通路３
３を通って第２の熱交換通路３０Ｂに流れ込むオイル
は、内管３２１の内側の冷却水通路１３ｂを流れる冷却
水と外側の冷却水の間で熱交換が行われる。冷却された
オイルは出口３２Ａからトランスミッションに戻る。The flow of oil in the second embodiment will be described. When oil flows from the transmission (not shown) into the first heat exchange passage 30A via the oil inlet 31A, heat exchange is performed between the cooling water flowing through the cooling water passage 13a inside the inner pipe 311 and the outside cooling water. . From the end of the first heat exchange passage 30A to the communication passage 3
The oil flowing into the second heat exchange passage 30 </ b> B through the third pipe 3 is subjected to heat exchange between the cooling water flowing through the cooling water passage 13 b inside the inner pipe 321 and the outside cooling water. The cooled oil returns to the transmission through outlet 32A.

【００１９】したがって、第１の実施の形態と同様の作
用効果を奏する他、両熱交換通路３０Ａ、３０Ｂの内外
で冷却水と熱交換が行なわれるのでオイルの冷却性能が
向上する。Therefore, in addition to having the same operation and effect as the first embodiment, since the heat exchange with the cooling water is performed inside and outside the two heat exchange passages 30A and 30B, the cooling performance of the oil is improved.

【００２０】−第３の実施の形態− 図３は本発明によるオイルクーラ内蔵型熱交換器の第３
の実施の形態を示す図である。ラジエータ１０は図１
（ａ）に示したものと同様であり、説明を省略する。図
３に示すように、第３の実施の形態によるオイルクーラ
４０は、第１の管４１と第２の管４２とからなる二重管
構造のオイルクーラである。FIG. 3 shows a third embodiment of a heat exchanger with a built-in oil cooler according to the present invention.
It is a figure showing an embodiment. Radiator 10 is shown in FIG.
This is the same as that shown in FIG. As shown in FIG. 3, an oil cooler 40 according to the third embodiment is an oil cooler having a double pipe structure including a first pipe 41 and a second pipe 42.

【００２１】第１の管４１の内側は冷却水の通路１３ａ
とされ、第１の管４１と第２の管４２との間には熱交換
通路４０Ａが形成され、そこに熱交換フィン４３が配設
されている。第１の管４１と第２の管４２の両端には環
状の蓋４４，４６が配設され、熱交換通路４０Ａの両端
が塞がれている。第２の管４２の一端側にオイル入口４
２Ａが設けられている。第２の管４２の他端は図３
（ｂ）に示すように一部分４２ａが長手方向に切り欠か
れており、その外周面に半円筒４５が一端側まで延在
し、その一端側にオイル出口４５Ａが設けられている。
半円筒４５の内部には第２の熱交換通路４５Ｂが形成さ
れ、半円筒４５の他端側は図３（ａ）に示すように蓋４
６で塞がれている。オイル入口４２Ａと出口４５Ａは一
端側に並んで配置されている。The inside of the first pipe 41 is a cooling water passage 13a.
A heat exchange passage 40A is formed between the first tube 41 and the second tube 42, and a heat exchange fin 43 is provided therein. Annular lids 44 and 46 are provided at both ends of the first tube 41 and the second tube 42, and both ends of the heat exchange passage 40A are closed. An oil inlet 4 is provided at one end of the second pipe 42.
2A is provided. The other end of the second tube 42 is shown in FIG.
As shown in (b), a portion 42a is cut out in the longitudinal direction, and a semi-cylinder 45 extends to one end on the outer peripheral surface, and an oil outlet 45A is provided at one end.
A second heat exchange passage 45B is formed inside the semi-cylinder 45, and the other end of the semi-cylinder 45 has a lid 4 as shown in FIG.
Blocked by 6. The oil inlet 42A and the outlet 45A are arranged side by side on one end side.

【００２２】このような第３の実施の形態でのオイルの
流れについて説明する。図示しないトランスミッション
からオイルがオイル入口４２Ａを介して熱交換通路４０
Ａに流れ込む。熱交換通路４０Ａを流れるオイルは第１
の管４１の内側の冷却通路１３ａを流れる冷却水との間
で熱交換が行われる。オイルはさらに熱交換通路４０Ａ
の端部から切り欠き４２ａを介して半円筒４５の熱交換
通路４５Ｂに流れ込む。その熱交換通路４５Ｂを流れる
オイルは半円筒４５の外側を流れる冷却水との間で熱交
換が行われ、オイル出口４５Ａから排出される。The flow of oil in the third embodiment will be described. Oil is transmitted from a transmission (not shown) through a heat exchange passage 40 through an oil inlet 42A.
Flow into A. The oil flowing through the heat exchange passage 40A is the first oil.
Heat is exchanged with the cooling water flowing through the cooling passage 13a inside the pipe 41. Oil further heat exchange passage 40A
Flows into the heat exchange passage 45B of the semi-cylinder 45 through the notch 42a from the end of the half cylinder 45. The oil flowing through the heat exchange passage 45B exchanges heat with cooling water flowing outside the half cylinder 45, and is discharged from the oil outlet 45A.

【００２３】したがって、第１の実施の形態と同様の作
用効果を奏する他、オイルクーラ４０の外径を大きくす
る必要がない。Therefore, the same operation and effect as those of the first embodiment are obtained, and it is not necessary to increase the outer diameter of the oil cooler 40.

【００２４】−第４の実施の形態− 図４は本発明によるオイルクーラ内蔵型熱交換器の第４
の実施の形態を示す図である。ラジエータ１０は図１
（ａ）に示したものと同様であり、説明を省略する。図
４に示すように、第４の実施の形態によるオイルクーラ
５０は、第１の管５１と第２の管５２とからなる二重管
構造のオイルクーラである。FIG. 4 shows a fourth embodiment of a heat exchanger with a built-in oil cooler according to the present invention.
It is a figure showing an embodiment. Radiator 10 is shown in FIG.
This is the same as that shown in FIG. As shown in FIG. 4, the oil cooler 50 according to the fourth embodiment is an oil cooler having a double pipe structure including a first pipe 51 and a second pipe 52.

【００２５】第１の管５１の内側は冷却水の通路１３ａ
とされ、第１の管５１と第２の管５２との間には熱交換
通路５０Ａが形成され、そこに熱交換フィン５３が配設
されている。第１の管４１と第２の管４２の両端には環
状の蓋５４，５５が配設され、熱交換通路５０Ａの両端
が塞がれている。第２の管５２の一端側にオイル入口５
２Ａが設けられている。第２の管５２の外周側面の他端
から一端側のオイル入口５２Ａの近傍まで凹部５２ａが
形成されており、この凹部５２ａの他端には切欠部５２
ｂが形成されて、熱交換通路５０Ａが外周側にも連通す
るようになっている。そしてこの凹部５２ａ全体をほぼ
覆うように第２の管５２の側面には長手方向に延びる蓋
部材５６が取り付けられ、この蓋部材５６の一端側に
は、オイル出口５６Ａが設けられている。この蓋部材５
６と凹部５２ａとによって、熱交換通路５０Ｂが形成さ
れる。凹部５２ａの他端は蓋５５により塞がれる。な
お、符号５６ａは熱交換通路５０Ｂの流路断面積を稼ぐ
ために設けた膨出部であるが、充分に熱交換通路５０Ｂ
の流路断面積を得られるならば形成する必要はない。The inside of the first pipe 51 is a cooling water passage 13a.
A heat exchange passage 50A is formed between the first tube 51 and the second tube 52, and a heat exchange fin 53 is provided therein. Annular lids 54 and 55 are provided at both ends of the first tube 41 and the second tube 42, and both ends of the heat exchange passage 50A are closed. An oil inlet 5 is provided at one end of the second pipe 52.
2A is provided. A recess 52a is formed from the other end of the outer peripheral side surface of the second pipe 52 to the vicinity of the oil inlet 52A at one end, and a notch 52 is formed at the other end of the recess 52a.
b is formed so that the heat exchange passage 50A also communicates with the outer peripheral side. A cover member 56 extending in the longitudinal direction is attached to the side surface of the second pipe 52 so as to substantially cover the entire concave portion 52a, and an oil outlet 56A is provided at one end of the cover member 56. This lid member 5
6 and the concave portion 52a form a heat exchange passage 50B. The other end of the concave portion 52a is closed by the lid 55. Reference numeral 56a denotes a bulging portion provided to increase the flow path cross-sectional area of the heat exchange passage 50B.
If the cross-sectional area of the flow path can be obtained, there is no need to form the flow path.

【００２６】このような第３の実施の形態でのオイルの
流れは、第３の実施の形態と同じなので説明は省略す
る。したがって、第３の実施の形態と同様の作用効果を
奏する。特にオイルクーラ５０の外径はほぼ第２の管５
２の外径で納めることができる。The flow of the oil in the third embodiment is the same as that in the third embodiment, and the description is omitted. Therefore, the same operation and effect as those of the third embodiment can be obtained. In particular, the outer diameter of the oil cooler 50 is substantially equal to that of the second pipe 5.
2 outer diameter.

【００２７】以上ではオイルクーラの熱交換通路を１回
折返したが、３回以上折り返してもよい。また、熱交換
通路の形状は実施の形態に限定されることなく、オイル
入口と出口とがロアタンクの一端側にそれぞれ設置され
るものであれば、種々の形態を使用できる。さらに、ト
ランスミッションのオイルクーラとして説明したが、そ
の他のオイルの冷却器にも本発明を適用できる。In the above description, the heat exchange passage of the oil cooler is turned once, but may be turned three or more times. Further, the shape of the heat exchange passage is not limited to the embodiment, and various forms can be used as long as the oil inlet and the outlet are respectively provided at one end side of the lower tank. Further, the oil cooler of the transmission has been described, but the present invention can be applied to other oil coolers.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明によるオイルクーラ内蔵型熱交換器の第
１の実施の形態を示す図であり、（ａ）はラジエータの
斜視図、（ｂ）はロアタンクの縦断面図、（ｃ）は
（ｂ）のｃ−ｃ線断面図FIG. 1 is a view showing a first embodiment of a heat exchanger with a built-in oil cooler according to the present invention, (a) is a perspective view of a radiator, (b) is a longitudinal sectional view of a lower tank, and (c) is (B) sectional view taken along line cc

【図２】本発明によるオイルクーラ内蔵型熱交換器の第
２の実施の形態を示す図であり、（ａ）はロアタンクの
縦断面図、（ｂ）は（ａ）のｂ−ｂ線断面図、（ｃ）は
（ｂ）のｃ−ｃ線断面図FIG. 2 is a view showing a second embodiment of an oil cooler built-in heat exchanger according to the present invention, wherein (a) is a longitudinal sectional view of a lower tank, and (b) is a sectional view taken along line bb of (a). FIG. 3C is a cross-sectional view taken along line cc of FIG.

【図３】本発明によるオイルクーラ内蔵型熱交換器の第
３の実施の形態を示す図であり、（ａ）はオイルクーラ
の水平断面図、（ｂ）は（ａ）のｂ−ｂ線断面図FIG. 3 is a view showing a third embodiment of a heat exchanger with a built-in oil cooler according to the present invention, wherein (a) is a horizontal sectional view of the oil cooler, and (b) is a bb line of (a). Sectional view

【図４】本発明によるオイルクーラ内蔵型熱交換器の第
４の実施の形態を示す図であり、（ａ）はオイルクーラ
の水平断面図、（ｂ）は（ａ）のｂ−ｂ線断面図、
（ｃ）は分解斜視図FIG. 4 is a view showing a fourth embodiment of a heat exchanger with a built-in oil cooler according to the present invention, wherein (a) is a horizontal sectional view of the oil cooler, and (b) is a bb line of (a). Sectional view,
(C) is an exploded perspective view.

【図５】オイルクーラ内蔵型熱交換器の従来例を示す図
であり、（ａ）はラジエータの斜視図、（ｂ）はロアタ
ンクの縦断面図、（ｃ）は（ｂ）のｃ−ｃ線断面図5A and 5B are views showing a conventional example of a heat exchanger with a built-in oil cooler, wherein FIG. 5A is a perspective view of a radiator, FIG. 5B is a longitudinal sectional view of a lower tank, and FIG. Line cross section

【符号の説明】[Explanation of symbols]

１０ ラジエータ １１ アッパタンク １２ 熱交換部 １３ ロアタンク １３ａ 冷却水通路 ２０，３０，４０，５０ オイルクーラ ２０Ａ，２０Ｂ，３０Ａ，３０Ｂ，４０Ａ，４５Ｂ，５
０Ａ，５０Ｂ 熱交換通路 ２２Ａ，３１Ａ，４２Ａ，５２Ａ オイル入口 ２３Ａ，３２Ａ，４５Ａ，５６Ａ オイル出口DESCRIPTION OF SYMBOLS 10 Radiator 11 Upper tank 12 Heat exchange part 13 Lower tank 13a Cooling water passage 20, 30, 40, 50 Oil cooler 20A, 20B, 30A, 30B, 40A, 45B, 5
0A, 50B Heat exchange passage 22A, 31A, 42A, 52A Oil inlet 23A, 32A, 45A, 56A Oil outlet

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】エンジン冷却水が導入される所定の長さの
アッパタンクと、 アッパタンクに導入された冷却水を冷却する熱交換部
と、 この熱交換部で熱交換された冷却水を受入れる所定の長
さのロアタンクと、 このロアタンク内に設けられ、オイル入口から導かれて
熱交換通路を流れるオイルを前記冷却水と熱交換してオ
イル出口から排出するオイルクーラとを備えるオイルク
ーラ内蔵型熱交換器において、 前記オイル入口とオイル出口の双方を前記ロアタンクの
長手方向の一端側に配置し、 前記オイル入口から流入するオイルを前記ロアタンクの
他端側で折返して前記オイル出口へ導く前記熱交換通路
を備えたことを特徴とするオイルクーラ内蔵型熱交換
器。An upper tank having a predetermined length into which engine cooling water is introduced, a heat exchanging section for cooling the cooling water introduced into the upper tank, and a predetermined section for receiving the cooling water exchanged by the heat exchanging section. A heat exchanger with a built-in oil cooler, comprising: a lower tank having a length; and an oil cooler provided in the lower tank and exchanging heat from oil flowing through the heat exchange passage guided from an oil inlet with the cooling water and discharging the oil from an oil outlet. In the vessel, both the oil inlet and the oil outlet are arranged at one end in the longitudinal direction of the lower tank, and the oil flowing from the oil inlet is turned at the other end of the lower tank and guided to the oil outlet. A heat exchanger with a built-in oil cooler, comprising: 【請求項２】前記オイルクーラは、略同心状に配設され
た三重管で構成され、 最内側の管の外側と中間の管の内側との間に内側の熱交
換通路が形成され、 最外側の管の内側と中間の管の外側との間に外側の熱交
換通路が形成され、 前記内側の熱交換通路の一端側に、前記オイル入口また
はオイル出口のどちらか一方が形成され、 前記外側の熱交換通路の一端側に、前記オイル入口また
はオイル出口の他方が形成され、 他端側で、前記内側の熱交換通路と外側の熱交換通路と
が連通しており、 前記最内側の管の内側と最外側の管の外側とで冷却水と
熱交換することを特徴とする請求項１に記載のオイルク
ーラ内蔵型熱交換器。2. The oil cooler is constituted by a triple pipe arranged substantially concentrically, wherein an inner heat exchange passage is formed between an outer side of an innermost pipe and an inner side of an intermediate pipe. An outer heat exchange passage is formed between the inner side of the outer tube and the outer side of the intermediate tube, and one of the oil inlet and the oil outlet is formed at one end of the inner heat exchange passage. The other of the oil inlet and the oil outlet is formed at one end of the outer heat exchange passage, and the inner heat exchange passage and the outer heat exchange passage communicate with each other at the other end, 2. The heat exchanger with a built-in oil cooler according to claim 1, wherein heat exchange is performed between the inside of the tube and the outside of the outermost tube with cooling water. 3. 【請求項３】前記オイルクーラは、略同心状に配設され
た二重管で構成され、 内側の管の外側と外側の管の内側との間に第１の熱交換
通路が形成され、 外側の管の外側面に第２の熱交換通路が形成され、 前記第１の熱交換通路の一端側に、前記オイル入口また
はオイル出口のどちらか一方が形成され、 前記第２の熱交換通路の一端側に、前記オイル入口また
はオイル出口の他方が形成され、 他端側で、前記第１の熱交換通路と第２の熱交換通路と
が連通しており、 前記内側の管の内側と外側の管の外側とで冷却水と熱交
換することを特徴とする請求項１に記載のオイルクーラ
内蔵型熱交換器。3. The oil cooler is constituted by a double pipe arranged substantially concentrically, wherein a first heat exchange passage is formed between the outside of the inner pipe and the inside of the outer pipe, A second heat exchange passage formed on the outer surface of the outer tube; one of the oil inlet and the oil outlet formed at one end of the first heat exchange passage; The other end of the oil inlet or the oil outlet is formed at one end of the first tube, and the first heat exchange passage and the second heat exchange passage communicate with each other at the other end. 2. The heat exchanger with a built-in oil cooler according to claim 1, wherein heat is exchanged with cooling water between the outside of the outer tube. 【請求項４】前記外側の管の外周側面に形成した凹部
と、この凹部を覆う蓋部材とで前記第２の熱交換通路が
形成されていることを特徴とする請求項３に記載のオイ
ルクーラ内蔵型熱交換器。4. The oil according to claim 3, wherein the second heat exchange passage is formed by a concave portion formed on the outer peripheral side surface of the outer tube and a cover member covering the concave portion. Heat exchanger with built-in cooler.
JP30729097A 1997-11-10 1997-11-10 Oil cooler built-in heat exchanger Expired - Fee Related JP3702619B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30729097A JP3702619B2 (en) 1997-11-10 1997-11-10 Oil cooler built-in heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30729097A JP3702619B2 (en) 1997-11-10 1997-11-10 Oil cooler built-in heat exchanger

Publications (2)

Publication Number Publication Date
JPH11142088A true JPH11142088A (en) 1999-05-28
JP3702619B2 JP3702619B2 (en) 2005-10-05

Family

ID=17967361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30729097A Expired - Fee Related JP3702619B2 (en) 1997-11-10 1997-11-10 Oil cooler built-in heat exchanger

Country Status (1)

Country Link
JP (1) JP3702619B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040038487A (en) * 2002-11-01 2004-05-08 기아자동차주식회사 Oil Quick Cooler of Automatic Transmission for Automobiles
JP2005291646A (en) * 2004-04-01 2005-10-20 Denso Corp Oil cooler
CN102778147A (en) * 2012-07-20 2012-11-14 无锡博利达换热器有限公司 Oil-water cooler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040038487A (en) * 2002-11-01 2004-05-08 기아자동차주식회사 Oil Quick Cooler of Automatic Transmission for Automobiles
JP2005291646A (en) * 2004-04-01 2005-10-20 Denso Corp Oil cooler
CN102778147A (en) * 2012-07-20 2012-11-14 无锡博利达换热器有限公司 Oil-water cooler

Also Published As

Publication number Publication date
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