JPH06280565A - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- JPH06280565A JPH06280565A JP6791393A JP6791393A JPH06280565A JP H06280565 A JPH06280565 A JP H06280565A JP 6791393 A JP6791393 A JP 6791393A JP 6791393 A JP6791393 A JP 6791393A JP H06280565 A JPH06280565 A JP H06280565A
- Authority
- JP
- Japan
- Prior art keywords
- annular passage
- oil
- oil cooler
- pipe
- outer peripheral
- 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
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
-
- 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
- F28D7/10—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 one within the other, e.g. concentrically
- F28D7/103—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 one within the other, e.g. concentrically consisting of more than two coaxial conduits or modules of more than two coaxial conduits
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、熱交換媒体の流れる媒
体通路中に配置され、管と管との間の環状通路を流れる
被熱交換媒体が、媒体通路内を流れる熱交換媒体と熱交
換する熱交換器に関し、特に冷却水路（媒体通路）内に
配されて、エンジン冷却水（熱交換媒体）とオイル（被
熱交換媒体）とを熱交換し、オイルを冷却するオイルク
ーラに用いて好適なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange medium which is arranged in a medium passage through which a heat exchange medium flows and which flows in an annular passage between pipes. Regarding a heat exchanger to be exchanged, it is particularly arranged in a cooling water passage (medium passage) and exchanges heat between engine cooling water (heat exchange medium) and oil (heat exchanged medium) and is used as an oil cooler for cooling oil. Is suitable.
【０００２】[0002]
【従来の技術】複数の管を用いた熱交換器の一例を、オ
イルクーラを例に説明する。従来、ラジエータの出口タ
ンク内に、オイルクーラを装着した技術が知られてい
る。このオイルクーラを図６に示す。このオイルクーラ
100 は、２つの管101 、102 を用いた２重管タイプのも
ので、各管101 、102 の間の環状通路103 にオイルを流
し、冷却水とオイルとを熱交換させて、オイルを冷却す
るものである。2. Description of the Related Art An example of a heat exchanger using a plurality of tubes will be described by taking an oil cooler as an example. BACKGROUND ART Conventionally, there is known a technique in which an oil cooler is installed in an outlet tank of a radiator. This oil cooler is shown in FIG. This oil cooler
100 is a double pipe type using two pipes 101 and 102. Oil is made to flow in the annular passage 103 between the pipes 101 and 102, and heat is exchanged between the cooling water and the oil to cool the oil. To do.
【０００３】[0003]
【発明が解決しようとする課題】２つの管101 、102 の
長さは、オイルクーラ100 の要求放熱量に応じて変化さ
せている。しかるに、オイルクーラ100 の長さは、ラジ
エータのタンク内に収納されるために、タンクの形状に
制約を受ける。このため、オイルクーラ100 の要求放熱
量が大きい場合や、ラジエータのタンクの長さが短い場
合（例えばタンクが左右両側にあるクロスフロータイプ
のラジエータのタンク内にオイルクーラを装着する場
合）、タンク内のオイルクーラ100 では放熱能力が不足
する不具合を備えていた。なお、２重管タイプのオイル
クーラ100 によって要求される放熱能力が得られない場
合は、外部に空冷式オイルクーラを追加して対処してい
る。このため、空冷式オイルクーラの追加によってコス
トが増加するとともに、追加する空冷式オイルクーラの
取り付けスペースを確保するのが困難であった。The lengths of the two pipes 101 and 102 are changed according to the required heat radiation amount of the oil cooler 100. However, the length of the oil cooler 100 is limited by the shape of the tank because it is stored in the radiator tank. For this reason, if the heat dissipation required by the oil cooler 100 is large, or if the radiator tank length is short (for example, when installing the oil cooler inside the tank of a cross-flow type radiator with tanks on the left and right sides), The oil cooler 100 inside had a problem that the heat dissipation capacity was insufficient. If the heat dissipation capability required by the double pipe type oil cooler 100 cannot be obtained, an air-cooled oil cooler is added to the outside. For this reason, the cost increases due to the addition of the air-cooled oil cooler, and it is difficult to secure a mounting space for the additional air-cooled oil cooler.
【０００４】[0004]
【発明の目的】本発明の目的は、長さに対する熱交換能
力の割合を高くすることができる熱交換器の提供にあ
る。SUMMARY OF THE INVENTION An object of the present invention is to provide a heat exchanger capable of increasing the ratio of heat exchange capacity to length.
【０００５】[0005]
【課題を解決するための手段】本発明の熱交換器は、各
間に被熱交換媒体が流れる環状通路を隔てて設けられた
３重管以上の多重管を形成する３つ以上の管と、前記多
重管の各管の間に形成される複数の環状通路の内、最外
周の環状通路の端部に連通する外周接続部と、前記複数
の環状通路の内、最内周の環状通路の端部に連通する内
周接続部とを備え、前記最外周の環状通路の前記外周接
続部とは異なった側の端部が、隣接する環状通路と連通
し、前記最内周の環状通路の前記内周接続部とは異なっ
た側の端部が、隣接する環状通路と連通し、前記環状通
路内を流れる被熱交換媒体が、各環状通路の端で内周ま
たは外周へＵターンして流れる技術的手段を採用する。A heat exchanger according to the present invention comprises three or more tubes forming a multiple tube of three or more tubes provided with an annular passage between which a heat exchange medium flows between them. An outer peripheral connecting portion that communicates with an end of the outermost annular passage of the plurality of annular passages formed between the tubes of the multiple pipe, and an innermost annular passage of the plurality of annular passages. An inner peripheral connecting portion communicating with an end portion of the inner peripheral connecting portion, and an end portion of the outermost peripheral annular passage on a side different from the outer peripheral connecting portion communicates with an adjacent annular passage, and the innermost peripheral annular passage. The end portion on the side different from the inner peripheral connection portion communicates with the adjacent annular passage, and the heat exchange medium flowing in the annular passage makes a U-turn to the inner circumference or the outer circumference at the end of each annular passage. Adopt technical means that flow.
【０００６】[0006]
【発明の作用】前記外周接続部あるいは前記内周接続部
より環状通路に導かれた被熱交換媒体は、各環状通路で
内周または外周へＵターンし、隣接する環状通路に導か
れる。そして、最内周の環状通路あるいは最外周の環状
通路を流れた被熱交換媒体は、内周接続部あるいは外周
接続部より外部へ流出する。なお、被熱交換媒体は、各
環状通路を流れる際に、熱交換器の外部を流れる熱交換
媒体と熱交換する。The heat exchange medium introduced into the annular passage from the outer peripheral connection portion or the inner peripheral connection portion makes a U-turn to the inner periphery or the outer periphery in each annular passage and is introduced to the adjacent annular passage. Then, the heat exchange medium that has flowed through the innermost annular passage or the outermost annular passage flows out from the inner peripheral connecting portion or the outer peripheral connecting portion. The heat exchange medium exchanges heat with the heat exchange medium flowing outside the heat exchanger when flowing through the annular passages.
【０００７】[0007]
【発明の効果】本発明の熱交換器は、管を３重以上の多
重管とすることにより、環状通路が多重（２重以上）に
形成される。そして、各環状通路がＵターンして設けら
れるため、熱交換器の長さ（管方向の長さ）に対して熱
交換媒体が流れる流路距離を従来に比較して長くでき
る。この結果、熱交換器の長さに対する熱交換能力の割
合が、従来に比較して高くなる。これにより、熱交換器
の長さを従来と同じとすれば熱交換能力を大きくするこ
とができる。また、熱交換器の熱交換能力を従来と同じ
とすれば熱交換器の長さを短くすることができる。EFFECTS OF THE INVENTION In the heat exchanger of the present invention, the annular passages are formed in multiple (double or more) by using multiple tubes having three or more tubes. Since each annular passage is provided with U-turns, the flow path distance through which the heat exchange medium flows can be made longer than the conventional length with respect to the length of the heat exchanger (length in the pipe direction). As a result, the ratio of the heat exchange capacity to the length of the heat exchanger is higher than that of the conventional one. Thereby, if the length of the heat exchanger is the same as the conventional one, the heat exchange capacity can be increased. Further, if the heat exchange capacity of the heat exchanger is the same as the conventional one, the length of the heat exchanger can be shortened.
【０００８】[0008]
【実施例】次に、本発明の熱交換器を、水冷式のオイル
クーラに用いた一実施例に基づき図面を用いて説明す
る。 〔実施例の構成〕図１ないし図３は本発明の実施例を示
すもので、図１はオイルクーラの正面断面図、図２はそ
の側面断面図、図３はオイルクーラを組み込んだラジエ
ータの正面図である。ラジエータ１は、下方の出口タン
ク２、上方の入口タンク３、この２つのタンク２、３を
連通する複数のチューブ４、およびこのチューブ４間に
配されたコルゲートフィン５から構成される周知の構造
のもので、図示しないエンジンの冷却水を、コルゲート
フィン５を通過する空気によって冷却する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a heat exchanger according to the present invention will be described with reference to the drawings based on an embodiment in which a water-cooled oil cooler is used. [Structure of Embodiment] FIGS. 1 to 3 show an embodiment of the present invention. FIG. 1 is a front sectional view of an oil cooler, FIG. 2 is a side sectional view thereof, and FIG. 3 is a radiator incorporating an oil cooler. It is a front view. The radiator 1 is a well-known structure including a lower outlet tank 2, an upper inlet tank 3, a plurality of tubes 4 connecting the two tanks 2 and 3, and corrugated fins 5 arranged between the tubes 4. The engine cooling water (not shown) is cooled by the air passing through the corrugated fins 5.
【０００９】このラジエータ１は、下方の出口タンク２
内にオイルクーラ６（熱交換器）が配置されている。出
口タンク２は、エンジン冷却水（熱交換媒体）が流れる
冷却水路（媒体通路）の一部であって、この出口タンク
２内に配されるオイルクーラ６は、出口タンク２内を流
れる冷却水で図示しない自動変速機のオイル（被熱交換
媒体）を冷却する。This radiator 1 has a lower outlet tank 2
An oil cooler 6 (heat exchanger) is arranged inside. The outlet tank 2 is a part of a cooling water passage (medium passage) through which engine cooling water (heat exchange medium) flows, and the oil cooler 6 arranged in the outlet tank 2 is a cooling water flowing in the outlet tank 2. The oil (heat exchange medium) of the automatic transmission (not shown) is cooled.
【００１０】オイルクーラ６は、同軸状に配された３つ
の管（外パイプ７、中間パイプ８、内パイプ９）と、冷
却するオイルをオイルクーラ６の内部に導く外周接続部
１０と、冷却されたオイルをオイルクーラ６の外部へ導
く内周接続部１１とから構成され、外パイプ７と中間パ
イプ８の間、および中間パイプ８と内パイプ９の間にオ
イルが流れる外周環状通路１２（本発明の最外周の環状
通路）および内周環状通路１３（本発明の最内周の環状
通路）が形成される。The oil cooler 6 includes three tubes (outer pipe 7, intermediate pipe 8 and inner pipe 9) arranged coaxially, an outer peripheral connecting portion 10 for guiding oil to be cooled into the oil cooler 6, and a cooling pipe. The outer peripheral annular passage 12 (including an inner peripheral connecting portion 11 that guides the collected oil to the outside of the oil cooler 6) flows between the outer pipe 7 and the intermediate pipe 8 and between the intermediate pipe 8 and the inner pipe 9. The outermost annular passage of the present invention) and the inner annular passage 13 (the innermost annular passage of the present invention) are formed.
【００１１】外周接続部１０は、外周環状通路１２の一
方の端側（図１中左側）に接続されている。また、内周
接続部１１も、内周環状通路１３の一方の端側（図１中
左側）に接続されている。外周環状通路１２の他方の端
（外周環状通路１２の外周接続部１０とは異なった側の
端部であり、かつ内周環状通路１３の内周接続部１１と
は異なった側の端部）は、隣接する内周環状通路１３と
連通し、外周環状通路１２を通過したオイルが連通部１
４で内周側にＵターンして内周環状通路１３へ導かれる
ように設けられている。具体的には、外パイプ７の他方
の端と内パイプ９の他方の端とが接合され、外周環状通
路１２と内周環状通路１３とが中間パイプ８を仕切壁に
してＵターンする構造に設けられている。なお、外周環
状通路１２の一方の端は、外パイプ７と中間パイプ８の
一方の端を接合することにより閉じられている。同様
に、内周環状通路１３の一方の端は、中間パイプ８と内
パイプ９の一方の端を接合することにより閉じられてい
る。The outer peripheral connecting portion 10 is connected to one end side (left side in FIG. 1) of the outer peripheral annular passage 12. Further, the inner peripheral connecting portion 11 is also connected to one end side (the left side in FIG. 1) of the inner peripheral annular passage 13. The other end of the outer peripheral annular passage 12 (the end on the side different from the outer peripheral connecting portion 10 of the outer peripheral annular passage 12 and the end on the side different from the inner peripheral connecting portion 11 of the inner peripheral annular passage 13) Is communicated with the adjacent inner peripheral annular passage 13 and the oil passing through the outer peripheral annular passage 12 is communicated with the communicating portion 1
It is provided so as to make a U-turn to the inner peripheral side at 4 and be guided to the inner peripheral annular passage 13. Specifically, the other end of the outer pipe 7 and the other end of the inner pipe 9 are joined, and the outer peripheral annular passage 12 and the inner peripheral annular passage 13 make a U-turn with the intermediate pipe 8 as a partition wall. It is provided. Note that one end of the outer peripheral annular passage 12 is closed by joining one ends of the outer pipe 7 and the intermediate pipe 8. Similarly, one end of the inner peripheral annular passage 13 is closed by joining one ends of the intermediate pipe 8 and the inner pipe 9.
【００１２】〔オイルクーラ６の組み立て〕外パイプ
７、中間パイプ８、内パイプ９は、アルミニウム−マン
ガン系を母材として形成された筒管で、外周、内周環状
通路１２、１３には、熱交換効率を向上させるスリット
式のインナーフィン１５が挿入されている。なお、外パ
イプ７の外周面および内周管の内周面、つまり冷却水と
の接触面には、酸化等の腐食を防ぐ犠牲材が設けられて
いる。また、３つの各管のインナーフィン１５が接合さ
れる面には、ろう材がクラッドされている。また、イン
ナーフィン１５は、アルミニウム−マンガン系を母材と
して設けられたもので、両面にろう材がクラッドされて
いる。なお、インナーフィン１５は、放熱面積を確保す
るために長い方が有効である。このため、本実施例で
は、外周側のインナーフィン１５の外周接続部１０が接
続される側とは異なった側の長さを長く設けた。しかる
に、同一の長さに設けても良い。なお、外パイプ７、中
間パイプ８、内パイプ９およびインナーフィン１５をア
ルミニウム−マンガン系金属で設けた例を示したが、ア
ルミニウムや黄銅等他の材料によって形成しても良い。[Assembly of Oil Cooler 6] The outer pipe 7, the intermediate pipe 8 and the inner pipe 9 are cylindrical pipes formed of aluminum-manganese as a base material. A slit type inner fin 15 for improving heat exchange efficiency is inserted. A sacrificial material that prevents corrosion such as oxidation is provided on the outer peripheral surface of the outer pipe 7 and the inner peripheral surface of the inner peripheral tube, that is, the contact surface with the cooling water. A brazing material is clad on the surface of each of the three tubes to which the inner fins 15 are joined. The inner fin 15 is provided with an aluminum-manganese base material as a base material, and a brazing material is clad on both surfaces. It is effective that the inner fin 15 is long in order to secure a heat radiation area. For this reason, in this embodiment, the length of the inner fin 15 on the outer peripheral side different from the side to which the outer peripheral connecting portion 10 is connected is set to be long. However, they may be provided at the same length. Although the outer pipe 7, the intermediate pipe 8, the inner pipe 9, and the inner fin 15 are made of aluminum-manganese-based metal in the example, they may be made of other materials such as aluminum and brass.
【００１３】外周接続部１０は、オイルを外周環状通路
１２の端に供給するとともに、オイルクーラ６を出口タ
ンク２内に固定するもので、中央にオイルが流れる通路
１０ａを備える。この外周接続部１０は、例えば、アル
ミニウムの円柱材を切削加工によって作成したもので、
出口タンク２の内壁に当接する当接面１０ｂと、出口タ
ンク２内部よりの外部へ突出する突出部１０ｃとを備え
る。当接面１０ｂには、Ｏリング（図示しない）が装着
されるリング溝１０ｄが形成されている。また、突出部
１０ｃには、接続ネジ１０ｅが設けられている。この接
続ネジ１０ｅは、出口タンク２内にオイルクーラ６を装
着し、出口タンク２より突出した突出部１０ｃの接続ネ
ジ１０ｅがナット（図示しない）で締めつけられるもの
で、内周接続部１１の突出部１１ｃ（後述する）ととも
に、オイルクーラ６を出口タンク２内に固定するのに用
いられる。内周接続部１１は、外周接続部１０と全く同
一形状のもので、外周環状通路１２および内周環状通路
１３を通過したオイルを外部へ導く通路１１ａを備え
る。この内周接続部１１は、アルミニウムの円柱材を切
削加工によって作成したもので、出口タンク２の内壁に
当接する当接面１１ｂと、出口タンク２内部よりの外部
へ突出する突出部１１ｃとを備える。当接面１１ｂに
は、Ｏリング（図示しない）が装着されるリング溝１１
ｄが形成されている。また、突出部１１ｃには、接続ネ
ジ１１ｅが設けられている。この接続ネジ１１ｅは、出
口タンク２内にオイルクーラ６を装着し、出口タンク２
より突出した突出部１１ｃの接続ネジ１１ｅがナット
（図示しない）で締めつけられるもので、上記の外周接
続部１０の突出部とともに、オイルクーラ６を出口タン
ク２内に固定するのに用いられる。なお、外周接続部１
０、内周接続部１１は、冷鍛加工などによって形成する
こともできる。The outer peripheral connecting portion 10 supplies oil to the end of the outer peripheral annular passage 12 and fixes the oil cooler 6 in the outlet tank 2, and has a passage 10a through which the oil flows in the center. The outer peripheral connecting portion 10 is made of, for example, an aluminum columnar material by cutting,
The contact surface 10b that contacts the inner wall of the outlet tank 2 and the protrusion 10c that protrudes from the inside of the outlet tank 2 to the outside are provided. A ring groove 10d into which an O-ring (not shown) is mounted is formed on the contact surface 10b. A connecting screw 10e is provided on the protrusion 10c. The connection screw 10e is such that the oil cooler 6 is mounted in the outlet tank 2 and the connection screw 10e of the protruding portion 10c protruding from the outlet tank 2 is tightened with a nut (not shown). It is used to fix the oil cooler 6 in the outlet tank 2 together with the portion 11c (described later). The inner peripheral connecting portion 11 has exactly the same shape as the outer peripheral connecting portion 10, and includes a passage 11a for guiding the oil passing through the outer peripheral annular passage 12 and the inner peripheral annular passage 13 to the outside. The inner peripheral connecting portion 11 is formed by cutting an aluminum columnar material, and has an abutting surface 11b that abuts the inner wall of the outlet tank 2 and a protruding portion 11c that protrudes from the inside of the outlet tank 2 to the outside. Prepare A ring groove 11 in which an O-ring (not shown) is mounted on the contact surface 11b.
d is formed. A connecting screw 11e is provided on the protrusion 11c. The connection screw 11e is used to mount the oil cooler 6 in the outlet tank 2 and
The connection screw 11e of the more protruding protrusion 11c is tightened with a nut (not shown), and is used to fix the oil cooler 6 in the outlet tank 2 together with the protrusion of the outer peripheral connecting portion 10 described above. The outer peripheral connecting portion 1
0 and the inner peripheral connecting portion 11 can also be formed by cold forging or the like.
【００１４】そしてオイルクーラ６は、外パイプ７にイ
ンナーフィン１５を組付け、これに中間パイプ８を組付
け、次にインナーフィン１５を組付け、さらに内パイプ
９を組付け（逆の順序で良い）、ノコロックろう付け
法、あるいは真空ろう付け法によって、ろう付け接合さ
れる。なお、外周接続部１０および内周接続部１１は、
ろう付けや溶接等によって接合される。In the oil cooler 6, the inner pipe 15 is assembled to the outer pipe 7, the intermediate pipe 8 is assembled to the outer fin 7, the inner fin 15 is assembled, and the inner pipe 9 is assembled (in reverse order). Good), Nocolock brazing, or vacuum brazing. The outer peripheral connecting portion 10 and the inner peripheral connecting portion 11 are
It is joined by brazing or welding.
【００１５】〔実施例の作動〕次に、上記実施例の作動
を簡単に説明する。自動変速機から外周接続部１０にオ
イルが導かれると、外周接続部１０の通路１０ａより外
パイプ７と中間パイプ８との間の外周環状通路１２内に
オイルが流入する。外周環状通路１２に導かれたオイル
は、その外周環状通路１２のインナーフィン１５を通過
する。この外周環状通路１２のインナーフィン１５を通
過するオイルは、外パイプ７およびインナーフィン１５
を介して冷却水と熱交換して冷却される。外周環状通路
１２を通過したオイルは、外周環状通路１２と内周環状
通路１３とを連通する連通部１４でＵターンし、内周環
状通路１３内に導かれる。内周環状通路１３に導かれた
オイルは、その内周環状通路１３のインナーフィン１５
を通過する。この内周環状通路１３のインナーフィン１
５を通過するオイルは、内パイプ９およびインナーフィ
ン１５を介して冷却水と熱交換し、さらに冷却される。
そして、内周環状通路１３を通過した冷却後のオイル
は、内周側接続の通路より出口タンク２内の外部へ導か
れ、自動変速機へ戻される。[Operation of Embodiment] Next, the operation of the above embodiment will be briefly described. When the oil is guided from the automatic transmission to the outer peripheral connecting portion 10, the oil flows from the passage 10 a of the outer peripheral connecting portion 10 into the outer peripheral annular passage 12 between the outer pipe 7 and the intermediate pipe 8. The oil guided to the outer peripheral annular passage 12 passes through the inner fins 15 of the outer peripheral annular passage 12. The oil that passes through the inner fins 15 of the outer peripheral annular passage 12 receives the outer pipe 7 and the inner fins 15.
It is cooled by exchanging heat with cooling water via. The oil that has passed through the outer peripheral annular passage 12 makes a U-turn at the communication portion 14 that connects the outer peripheral annular passage 12 and the inner peripheral annular passage 13 and is guided into the inner peripheral annular passage 13. The oil introduced to the inner peripheral annular passage 13 is supplied to the inner fins 15 of the inner peripheral annular passage 13.
Pass through. Inner fin 1 of this inner peripheral annular passage 13
The oil passing through 5 exchanges heat with the cooling water through the inner pipe 9 and the inner fin 15, and is further cooled.
Then, the cooled oil that has passed through the inner peripheral annular passage 13 is guided to the outside of the outlet tank 2 from the passage connected to the inner peripheral side and returned to the automatic transmission.
【００１６】〔実施例の効果〕本実施例では、オイルの
流れる環状通路（外周環状通路１２、内周環状通路１
３）を２重にするとともに、外周環状通路１２を通過し
たオイルを内周環状通路１３に導くＵターン構造にした
ため、オイルクーラ６の全長Ｌに対するオイルが流れる
流路長を従来に比較して長くすることができる。このた
め、オイルクーラ６の長さに対するオイルの冷却能力が
従来に比較して大きくなる。つまり、オイルクーラ６の
長さを従来と同じとすればオイルの冷却能力を大きくす
ることができる。また、オイルクーラ６によるオイルの
冷却能力を従来と同じとすればオイルクーラ６の長さを
短くすることができる。これにより、例えばクロスフロ
ータイプのラジエータのタンク内に、外部オイルクーラ
６を追加することなく搭載できる。また、本実施例のオ
イルクーラ６は、オイルが一方の端でＵターンする構造
であるため、外周接続部１０と内周接続部１１との距離
が接近して設けられる。このため、ラジエータ１の外部
で２つの接続部を近づけるための配管が不要になる効果
も有する。[Effects of the Embodiment] In this embodiment, the annular passages through which the oil flows (the outer peripheral annular passage 12, the inner peripheral annular passage 1)
3) is doubled, and the U-turn structure that guides the oil passing through the outer peripheral annular passage 12 to the inner peripheral annular passage 13 is adopted. Can be long. Therefore, the cooling capacity of the oil with respect to the length of the oil cooler 6 becomes larger than that in the conventional case. That is, if the length of the oil cooler 6 is the same as the conventional one, the oil cooling capacity can be increased. Further, if the oil cooling capacity of the oil cooler 6 is the same as the conventional one, the length of the oil cooler 6 can be shortened. As a result, for example, the external oil cooler 6 can be mounted in the tank of the cross-flow type radiator without adding the external oil cooler 6. Further, since the oil cooler 6 of this embodiment has a structure in which the oil makes a U-turn at one end, the outer peripheral connecting portion 10 and the inner peripheral connecting portion 11 are provided close to each other. For this reason, there is also an effect that a pipe for bringing the two connection parts close to each other outside the radiator 1 is unnecessary.
【００１７】〔第２実施例〕図４および図５は第２実施
例を示すもので、図４はオイルクーラ６の正面断面図、
図５はオイルクーラ６の側面断面図である。本実施例
は、環状通路を３重に設けるともにＵターン箇所を対向
する２か所に設け、オイルを略Ｓ字形に流す４重管タイ
プのオイルクーラ６で、外パイプ７、外側中間パイプ８
ａ、内側中間パイプ８ｂ、内パイプ９の４つの筒管を同
軸状に配し、各間に外周環状通路１２、中間環状通路１
６、内側環状通路１３を備える。本実施例によって、オ
イルクーラ６の全長に対するオイルが流れる流路長を、
上記実施例に比較してさらに長くすることができ、オイ
ルクーラ６の冷却能力が大きくなる。なお、中間環状通
路１６を流れるオイルは、外周環状通路１２および内周
環状通路１３を流れるオイルを介して冷却水と熱交換さ
れるため、冷却能力の増加割合は低い。[Second Embodiment] FIGS. 4 and 5 show a second embodiment. FIG. 4 is a front sectional view of an oil cooler 6,
FIG. 5 is a side sectional view of the oil cooler 6. In the present embodiment, an annular passage is provided in three layers and U-turn locations are provided at two opposing locations, and is a quadruple pipe type oil cooler 6 for flowing oil in a substantially S-shape. An outer pipe 7 and an outer intermediate pipe 8 are provided.
a, the inner intermediate pipe 8b, and the inner pipe 9 are coaxially arranged, and the outer peripheral annular passage 12 and the intermediate annular passage 1 are interposed between the four tubular tubes.
6, the inner annular passage 13 is provided. According to this embodiment, the flow path length through which the oil flows with respect to the entire length of the oil cooler 6 is
It can be made longer than in the above embodiment, and the cooling capacity of the oil cooler 6 is increased. Since the oil flowing through the intermediate annular passage 16 is heat-exchanged with the cooling water through the oil flowing through the outer peripheral annular passage 12 and the inner peripheral annular passage 13, the rate of increase in cooling capacity is low.
【００１８】〔変形例〕上記の各実施例では、ラジエー
タの出口タンク内にオイルクーラを設けた例を示した
が、入口タンク内や冷却水が流れる配管、通路内など冷
却水の流れる冷却水路であれば他の部位に設けても良
い。自動変速機のオイルを冷却する例を示したが、エン
ジンオイル、パワーステアリングオイルなど他のオイル
を冷却するオイルクーラに用いても良い。被熱交換媒体
の例としてオイルを示したが、水や冷媒、空気など、他
の媒体の熱交換に用いても良い。その一例として、被熱
交換媒体の受けた熱で温蔵室の熱源としても良い。熱交
換媒体の例としてエンジン冷却水を例に示したが、潤滑
油や作動油等のオイルを用いても良い。自動車の熱交換
器を例に示したが、工作ロボットなど機械類に使用され
る熱交換器や、家庭用機器に使用される熱交換器等に用
いても良い。[Modification] In each of the above-described embodiments, an example in which an oil cooler is provided in the radiator outlet tank is shown. However, a cooling water passage in which the cooling water flows, such as in the inlet tank, pipes or passages through which cooling water flows If it is, it may be provided in another part. Although the example of cooling the oil of the automatic transmission has been shown, the oil cooler may be used for cooling other oil such as engine oil and power steering oil. Although oil is shown as an example of the medium to be heat exchanged, it may be used for heat exchange of other medium such as water, refrigerant, and air. As an example thereof, the heat received by the heat exchange medium may be used as the heat source for the heating chamber. Although engine cooling water is shown as an example of the heat exchange medium, oil such as lubricating oil or hydraulic oil may be used. Although the heat exchanger of an automobile is shown as an example, it may be used for a heat exchanger used for machinery such as a work robot, a heat exchanger used for household appliances, and the like.
【図１】オイルクーラの断面図である（第１実施例）。FIG. 1 is a sectional view of an oil cooler (first embodiment).
【図２】図１のＡ−Ａ線に沿う断面図である（第１実施
例）。FIG. 2 is a sectional view taken along line AA of FIG. 1 (first embodiment).
【図３】オイルクーラを組み込んだラジエータの正面図
である（第１実施例）。FIG. 3 is a front view of a radiator incorporating an oil cooler (first embodiment).
【図４】オイルクーラの断面図である（第２実施例）。FIG. 4 is a sectional view of an oil cooler (second embodiment).
【図５】図４のＢ−Ｂ線に沿う断面図である（第２実施
例）。5 is a sectional view taken along line BB of FIG. 4 (second embodiment).
【図６】オイルクーラの断面図である（従来技術）。FIG. 6 is a sectional view of an oil cooler (prior art).
６ オイルクーラ（熱交換器） ７ 外パイプ（複数の管の１つ） ８ 中間パイプ（複数の管の１つ） ９ 内パイプ（複数の管の１つ） １０ 外周接続部 １１ 内周接続部 １２ 外周環状通路（最外周の環状通路） １３ 内周環状通路（最内周の環状通路） １４ 連通部 6 Oil cooler (heat exchanger) 7 Outer pipe (one of a plurality of pipes) 8 Intermediate pipe (one of a plurality of pipes) 9 Inner pipe (one of a plurality of pipes) 10 Outer peripheral connection part 11 Inner peripheral connection part 12 Outer peripheral annular passage (outermost annular passage) 13 Inner peripheral annular passage (outermost annular passage) 14 Communication part
Claims (1)
隔てて設けられた３重管以上の多重管を形成する３つ以
上の管と、 前記多重管の各管の間に形成される複数の環状通路の
内、最外周の環状通路の端部に連通する外周接続部と、 前記複数の環状通路の内、最内周の環状通路の端部に連
通する内周接続部とを備え、 前記最外周の環状通路の前記外周接続部とは異なった側
の端部が、隣接する環状通路と連通し、 前記最内周の環状通路の前記内周接続部とは異なった側
の端部が、隣接する環状通路と連通し、 前記環状通路内を流れる被熱交換媒体が、各環状通路の
端で内周または外周へＵターンして流れる熱交換器。1. A pipe formed between three or more pipes forming a multiple pipe of three or more pipes provided with an annular passage between which a heat exchange medium flows and separated from each other, and each pipe of the multiple pipes. Out of the plurality of annular passages, an outer peripheral connecting portion that communicates with the end portion of the outermost annular passage, and an inner peripheral connecting portion that communicates with the end portion of the innermost annular passage of the plurality of annular passages. Comprising, the end portion of the outermost peripheral annular passage different from the outer peripheral connecting portion communicates with an adjacent annular passage, on the side different from the inner peripheral connecting portion of the innermost peripheral annular passage. A heat exchanger in which an end portion communicates with an adjacent annular passage, and a heat exchange medium flowing in the annular passage makes a U-turn to an inner circumference or an outer circumference at an end of each annular passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06791393A JP3227876B2 (en) | 1993-03-26 | 1993-03-26 | Heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06791393A JP3227876B2 (en) | 1993-03-26 | 1993-03-26 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06280565A true JPH06280565A (en) | 1994-10-04 |
| JP3227876B2 JP3227876B2 (en) | 2001-11-12 |
Family
ID=13358625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06791393A Expired - Lifetime JP3227876B2 (en) | 1993-03-26 | 1993-03-26 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3227876B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1388720A3 (en) * | 2002-08-08 | 2006-09-13 | MAHLE Filter Systems Japan Corporation | Triple-tube type heat exchanger and method of producing same |
| WO2018198781A1 (en) * | 2017-04-27 | 2018-11-01 | 株式会社豊田自動織機 | Heat exchanger and chemical heat-storage device |
| JP2020070759A (en) * | 2018-10-31 | 2020-05-07 | 株式会社クボタ | Engine with supercharger |
| JP2022008718A (en) * | 2016-03-25 | 2022-01-14 | コンチテック フルイド コリア リミテッド | Double pipe for heat exchange |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201801165D0 (en) * | 2018-01-24 | 2018-03-07 | Rolls Royce Plc | Oil pipe assembly |
-
1993
- 1993-03-26 JP JP06791393A patent/JP3227876B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1388720A3 (en) * | 2002-08-08 | 2006-09-13 | MAHLE Filter Systems Japan Corporation | Triple-tube type heat exchanger and method of producing same |
| JP2022008718A (en) * | 2016-03-25 | 2022-01-14 | コンチテック フルイド コリア リミテッド | Double pipe for heat exchange |
| WO2018198781A1 (en) * | 2017-04-27 | 2018-11-01 | 株式会社豊田自動織機 | Heat exchanger and chemical heat-storage device |
| JP2020070759A (en) * | 2018-10-31 | 2020-05-07 | 株式会社クボタ | Engine with supercharger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3227876B2 (en) | 2001-11-12 |
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