JPH04155195A - Header device for heat exchanger - Google Patents
Header device for heat exchangerInfo
- Publication number
- JPH04155195A JPH04155195A JP28087590A JP28087590A JPH04155195A JP H04155195 A JPH04155195 A JP H04155195A JP 28087590 A JP28087590 A JP 28087590A JP 28087590 A JP28087590 A JP 28087590A JP H04155195 A JPH04155195 A JP H04155195A
- Authority
- JP
- Japan
- Prior art keywords
- outlet
- fluid
- inlet
- fluid inlet
- heat exchange
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims abstract description 73
- 230000007423 decrease Effects 0.000 claims description 4
- 238000009751 slip forming Methods 0.000 claims 2
- 238000005219 brazing Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar 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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
- F28F9/0224—Header boxes formed by sealing end plates into covers
-
- 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
- F28F9/0202—Header boxes having their inner space divided by partitions
- F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
- F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は熱交換管への流体分配、及び熱交換管からの
流体収集する熱交換器ヘッダ装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a heat exchanger header arrangement for fluid distribution to and collection of fluid from heat exchange tubes.
一般に空気調和機は第４１Ａに示す如く構成されている
。即ち、（１）は空気調和機の室内機本体で、その内部
に圧縮ａ （２） 、プレートフィンチューブ式熱交換
器（３）を有し、室内空気は吸込み口（４）から入り、
熱交換器（３）を通して吹出し口（５）から出る空気流
（６）を形成させる送風機（７）を備えている。Generally, an air conditioner is configured as shown in No. 41A. That is, (1) is the indoor unit body of the air conditioner, which has a compression a (2) and a plate-fin-tube heat exchanger (3) inside, and indoor air enters from the suction port (4).
A blower (7) is provided which forms an air flow (6) through the heat exchanger (3) and out of the outlet (5).
第８図は例えば特公昭５２−５００５７ 号公報に示さ
れた従来のプレートフィンチューブ式熱交換器（３）の
構成を示す斜視図である。同図において、＾はへフグ装
置、（３）は入口側へフグ、（９）は出口側ヘッダα０
は０字状の熱交換管、（ロ）はこの熱交換″ＷμＱに装
着された放熱フィン、＠は流体入口管、μｓは流体出口
管、（至）は熱交換器（３）の取付板である。そして入
口側ヘッダ（８）、及び出口側ヘッダ（９）は周状を成
し、−画には着々の熱交換ｗｕｏ 、その反対側には流
体入口管（２）、流体出口管−を接続するためのバーリ
ング穴加工がなされ、各々の管（，０（２）−を押入し
てろう相接続していた。FIG. 8 is a perspective view showing the structure of a conventional plate-fin-tube heat exchanger (3) disclosed in, for example, Japanese Patent Publication No. 52-50057. In the same figure, ^ is the puffer device, (3) is the puffer to the inlet side, and (9) is the header α0 on the outlet side.
is the 0-shaped heat exchange tube, (b) is the radiation fin attached to this heat exchanger "WμQ, @ is the fluid inlet pipe, μs is the fluid outlet pipe, (to) is the mounting plate of the heat exchanger (3) The inlet header (8) and the outlet header (9) form a circumferential shape, with a steady heat exchanger on one side and a fluid inlet pipe (2) and a fluid outlet on the other side. Burring holes were made to connect the tubes, and each tube (,0(2)) was pushed in to make a solder connection.
次に動作について説明する。圧縮機（２）から高温高圧
冷媒ガスが室外機（図示せず）へ供給され、熱交換して
凝縮し室内機の絞り装！（図示せず）を通ってヘッダ装
置穴の入口側ヘッダ（８）に流入する。そして冷媒は熱
交換管ＱＯへ分配され熱交換管（１（Ｊ及び放熱フィン
＠を介して室内空気と熱交換して蒸発し、出口側ヘッダ
（９）へ収集した後圧縮機へ戻る。Next, the operation will be explained. High-temperature, high-pressure refrigerant gas is supplied from the compressor (2) to the outdoor unit (not shown), where it exchanges heat and condenses, throbbing the indoor unit! (not shown) into the inlet header (8) of the header device hole. The refrigerant is then distributed to the heat exchange tubes QO, exchanges heat with indoor air through the heat exchange tubes (J) and the heat radiation fins, evaporates, and is collected in the outlet header (9) before returning to the compressor.
従来の熱交換器は以上のように構成されているので、入
口側及び出口側ヘッダ（８） （９）への缶出ｕＣＪｏ
２、 −の接続に除しては、各ヘッダ（８） （９）が
円筒状のためバーリング穴加工及びろう付の作栗性が悪
く、また、各々別個の入口側及び出口側ヘッダ（８）
ｔ９）を組合せて熱交換器として組立てる必要があり、
構造ａシにも複雑なものとなる等の問題点があった。Since the conventional heat exchanger is configured as described above, the canister uCJo to the inlet side and outlet side headers (8) (9)
2. With the exception of the - connection, each header (8) (9) is cylindrical, making it difficult to drill burring holes and brazing. )
t9) to be assembled as a heat exchanger,
There are also problems in that the structure is complicated.
この発明は上記のような問題点を解消するためになされ
たもので、構成が簡単で、加工性及び組立性がよいヘッ
ダ装置を得るとともに、熱交換管への流体分配を容易に
均一化し得る熱交換器のヘッダ装置を得ることを目的と
している。This invention was made to solve the above-mentioned problems, and provides a header device that is simple in structure, has good workability and assembly, and can easily uniformize fluid distribution to heat exchange tubes. The purpose is to obtain a header device for a heat exchanger.
この発明に係る熱交換器のヘッダ装置の第１の発明は、
熱交換管入口接続口、出口接続口を有する熱交換管接続
用板状体と、流体入口側透孔、出口側透孔を有する中間
板状体と、流体入口管接続口、出口管接続口を有する流
体出入口管接続用板状体を備え、各々を重合して一体化
したものである。A first invention of a header device for a heat exchanger according to the present invention is as follows:
A plate-like body for connecting heat exchange tubes having a heat exchange pipe inlet connection port and an outlet connection port, an intermediate plate-like body having a fluid inlet side through hole and an outlet side through hole, a fluid inlet pipe connection port, and an outlet pipe connection port. The fluid inlet/outlet pipe connection plate-like body has a structure in which each plate body is integrated by polymerizing each other.
また第２の発明は、流体入口側透孔は、流体入口管から
遠ざかる方向に至るにしたがい流体の流通抵抗が小さく
なるように開口させた吃のでるる。In a second aspect of the invention, the fluid inlet side through-hole is opened so that the flow resistance of the fluid decreases as the fluid inlet side goes in a direction away from the fluid inlet pipe.
と記のように構成された熱交換器のヘッダ装置は、流体
を流体入口管より流体入口側透孔に４き、この透孔を経
て各々の熱交換管へ分配され、熱交挾後各々の熱交換管
から減俸出口側透孔へ収集され、流体出口管に導く。そ
して流体の分配時には、流体入口管から遠ざかる方同番
こ至るにしたがい流体の流通抵抗が小さいので、各々の
熱交換管には流体がほぼ均′４ｔこ分１１７１１！され
る。The header device of the heat exchanger configured as shown in 4 introduces the fluid from the fluid inlet pipe to the through hole on the fluid inlet side, and distributes it to each heat exchange tube through this through hole. The fluid is collected from the heat exchange tube into the through hole on the outlet side and led to the fluid outlet tube. When distributing the fluid, the flow resistance of the fluid decreases as the distance from the fluid inlet pipe increases, so the fluid is distributed approximately evenly in each heat exchange pipe by 4 tons (11711)! be done.
以下この発明の一冥施例について説明する。第１図はこ
の発明の一実厖剥を示す熱交換器の斜視図で、上記従来
の熱交換器と同一符号は同一、または相当部分を示すの
でその説明は省略する。An embodiment of this invention will be described below. FIG. 1 is a perspective view of a heat exchanger showing a practical example of the present invention, and since the same reference numerals as in the conventional heat exchanger described above indicate the same or corresponding parts, a description thereof will be omitted.
第２図はこの発明の要部を示すヘッダ装置の分解斜視図
で、（至）は熱交換管接続用板状体で例えばアルミニウ
ム板である。（１５ａ）は各々の熱交換管ＱＯの入口側
にそれぞれ接続するため、熱交換管接続用板状体にバー
リング穴加工により形成され、−列に整列して配置され
た燕交戻管入口側汝続口、（１５ｂ）は各々の熱交換ｗ
ｑＱの出口側にそれぞれ接続するため、上記熱交換管入
口（！！Ｉ接続口と同様に配置された熱交換管出口Ｏｌ
接続口である。FIG. 2 is an exploded perspective view of a header device showing the main parts of the present invention, and (to) a plate-like body for connecting heat exchange pipes, which is, for example, an aluminum plate. In order to connect to the inlet side of each heat exchange tube QO, (15a) is formed by burring holes in the heat exchange tube connection plate body, and the swallow exchange return tube inlet side is arranged in a - row. You follow the entrance, (15b) is each heat exchange w
In order to connect to the outlet side of qQ, the heat exchange tube inlet (!!
It is a connection port.
ａ句は中間板状体で例えば両面にろう材がコーティング
されたプレージングシートである。（１６ａ）は中間板
状体１こ、一側端部から他側端部に至る各々の入口４Ａ
接続口を含む範囲で連続して形成された流体入口側透孔
、（１６ｂ）は中間板状体に、一側端部から他側端部に
至る各々の出口側接続口を含む範囲で連続して形成され
た流体出口側透孔で、流体入口側透孔（１６ａ）と共に
レーザ切断機、あるいはターレットパンチプレス機で加
工される。０は流体出入口管接続用板状体で例えばアル
ミニウム板である。（１７ａ）は流体入口管＠に接続し
、入口側透孔（１６ａ）の一側に対応する位置に形成さ
れた流体入口接続口、（１７ｂ）は流体出口管時に接続
し、出口側透孔（１６ｂ）の一側に対応する位置に形成
された流体出口接続口である。Clause a is an intermediate plate-like body, for example, a plating sheet coated with a brazing material on both sides. (16a) indicates the intermediate plate-like body 1, each inlet 4A extending from one end to the other end.
The fluid inlet-side through holes (16b) are formed continuously in the range including the connection ports, and are continuous in the intermediate plate-like body in the range including each outlet-side connection port from one end to the other end. The fluid outlet side through hole (16a) is formed by using a laser cutting machine or a turret punch press machine together with the fluid inlet side through hole (16a). 0 is a plate-shaped body for connecting a fluid inlet/outlet pipe, and is, for example, an aluminum plate. (17a) is a fluid inlet connection port that connects to the fluid inlet pipe @ and is formed at a position corresponding to one side of the inlet side through hole (16a); (17b) connects to the fluid outlet pipe @ and is formed at a position corresponding to one side of the inlet side through hole (16a); A fluid outlet connection port is formed at a position corresponding to one side of (16b).
そしてヘッダ装置穴を組立てる時は、熱交換管接線用板
状体（５）、中間板状体（６）、及び流体出入口管接続
用板状体（財）を順次重合して、中間板状体（至）にプ
レージングシートを使用する場合は炉中ろう付で一気に
ろう付固着し一体化する。中間板状体（ト）として他の
部材を使用する場合は、接着剤あるいはろう付−こより
一体化する。When assembling the header device hole, the heat exchange tube tangent plate (5), the intermediate plate (6), and the fluid inlet/outlet pipe connection plate are sequentially polymerized to form the intermediate plate. When using a plating sheet for the body, it is soldered and fixed all at once by furnace brazing. When using other members as the intermediate plate-shaped member (g), they are integrated by adhesive or brazing.
なお、入口側透孔（１６ａ）及び出口側透孔（１６ｂ）
は、それぞれ流体入口管（６）及び流体出口管０に対応
する位置から遠ざかる方向へ至るにしたがって、流体抵
抗が小さくなるように暫次開口を拡大させている。すな
わち、入口側透孔（１６ａ）及び出口側道孔（１６ｂ）
は、流体入口管＠及び流体出口管口が互いに反対側に位
置しているため、互いに逆方向に暫次開口幅が拡大する
ように配置されている。In addition, the inlet side through hole (16a) and the outlet side through hole (16b)
The openings are gradually enlarged so that the fluid resistance becomes smaller as the openings move away from the positions corresponding to the fluid inlet pipe (6) and the fluid outlet pipe 0, respectively. That is, the entrance side through hole (16a) and the exit side passage hole (16b)
Since the fluid inlet pipe @ and the fluid outlet pipe port are located on opposite sides, they are arranged so that the opening width gradually expands in opposite directions.
かかる構成において絞り装置（図示せず）からの冷媒は
、流体入口管（ロ）を介して入口側透孔（１６ａ ）に
供給される。そしてこの透孔（１６ａ）から熱交換管α
Ｑへ分配され、各々の熱交換出頭で放熱フィン（ロ）を
介して室内空気を冷却した後出口側透孔（１６ｂ）に至
り、流体出口管口を経て再び圧縮機へ戻る作用を繰りｄ
す。この時、入口側及び出口側透孔（１７ａ） （１７
ｂ）は互いに逆方向に拡大するように開口しているので
、流体入口管（６）から流体出口管−に至る管路の流体
流通抵抗はほぼ均一化され、各々の熱交換管ｕＯへの冷
媒分配が均一化される。In this configuration, the refrigerant from the throttle device (not shown) is supplied to the inlet side through hole (16a) via the fluid inlet pipe (b). Then, from this through hole (16a), the heat exchange tube α
After cooling the indoor air through the heat radiation fins (b) at each heat exchange head, it reaches the outlet side through hole (16b) and returns to the compressor via the fluid outlet pipe opening.
vinegar. At this time, the inlet side and outlet side through holes (17a) (17
b) are opened so as to expand in opposite directions, so the fluid flow resistance of the pipes from the fluid inlet pipe (6) to the fluid outlet pipe is almost equalized, and the flow to each heat exchange pipe uO is Refrigerant distribution is evened out.
なお、上記芙１例では空気調和機の室内機に使用する熱
交換器のヘッダ装置について説明したがこれに類似する
熱交換器のすべてのヘッダ装置について上記実施例と同
様の効果を奏する。In addition, although the header device of the heat exchanger used for the indoor unit of an air conditioner was explained in the above-mentioned example 1, all the header devices of the heat exchanger similar to this have the same effect as the above-mentioned embodiment.
以上のようにこの発明によれば、熱交換管人口接続口、
出口接続口を有する熱交換管接続用板状体と、流体入口
側透孔、出口側透孔を舊する中間板状体と、流体入口管
接続口、出口管接続口を有する流体出入口管接続用板状
体を備え、各々を重合して一体化したものである。また
、流体入口側透孔は、流体入口管から遠ざかる方向に至
るにしたがい流体の流通抵抗が小さくなるように開口さ
せたものである。As described above, according to the present invention, the heat exchange pipe artificial connection port,
A plate-like body for connecting heat exchange pipes having an outlet connection port, an intermediate plate-like body having a through hole on the fluid inlet side and a through hole on the outlet side, and a fluid inlet/outlet pipe connection having a fluid inlet pipe connection port and an outlet pipe connection port. It is equipped with a plate-like body for use in the air, and each of them is polymerized and integrated. Further, the fluid inlet side through-hole is opened so that the flow resistance of the fluid decreases as the distance from the fluid inlet pipe increases.
従って、入口側及び出口側のヘッダは一体化でさ、その
構成も簡単なものとなり、また、ヘッダ装置は板状体か
らなるので、従来に比してその加工性及び組立性も同上
する。さらに、中ｉｔ＋奴状体の入口側透孔Ｉ工、各々
の熱交換管の流通抵抗が均一化されるように開口されて
いるので、各々の熱交換管へのａ体分配を均一化するこ
とができる。Therefore, the headers on the inlet side and the outlet side are integrated, and the structure thereof is simple. Furthermore, since the header device is made of a plate-shaped body, its workability and assemblage are also improved compared to the conventional ones. Furthermore, the through hole I on the inlet side of the middle IT + tube body is opened so that the flow resistance of each heat exchange tube is equalized, so that the distribution of a body to each heat exchange tube is made uniform. be able to.
第１図はこの発明の一実厖例を示す熱交換器の斜視図、
第２図はこの発明の要部を示すヘッダ部の分解斜視図。
第３図は従来の熱交換器を示す斜視図。第４図は一般的
な空気調和機の室内機の構成図である。
ばにおいて、（３）は熱交換器、ｑＱは熱交換管、（至
）は流体入口管、（至）は流体出口管、（至）は熱交換
接続用板状体、（至）は中間板状体、側は流体出入口管
接続用板状体である。
なお、各図中、同一符号は同一、またはう目当部分を示
す。FIG. 1 is a perspective view of a heat exchanger showing an example of the present invention;
FIG. 2 is an exploded perspective view of a header section showing essential parts of the invention. FIG. 3 is a perspective view showing a conventional heat exchanger. FIG. 4 is a configuration diagram of an indoor unit of a general air conditioner. In the example, (3) is a heat exchanger, qQ is a heat exchange tube, (to) is a fluid inlet pipe, (to) is a fluid outlet pipe, (to) is a plate-shaped body for heat exchange connection, (to) is an intermediate The side of the plate-shaped body is a plate-shaped body for connecting fluid inlet/outlet pipes. In each figure, the same reference numerals indicate the same or intended parts.
Claims (2)
整列配置された熱交換管入口側接続口、及び上記熱交換
管の出口側にそれぞれ接続し、かつ整列配置された熱交
換管出口側接続口を有する熱交換管接続用板状体と、上
記一側から他側に至る各々の入口側接続口を含む範囲で
連続して形成された流体入口側透孔、及び上記一側から
他側に至る各々の出口側接続口を含む範囲で連続して形
成された流体出口側透孔を有する中間板状体と、流体入
口管に接続し、上記入口側透孔の一側に対応する位置に
形成された流体入口管接続口、及び流体出口管に接続し
、上記出口側透孔の一側に対応する位置に形成された流
体出口管接続口を有する流体出入口管接続用板状体とを
備え、上記熱交換管接続用板状体、中間板状体、及び流
体出入口管接続用板状体を重合して一体化したことを特
徴とする熱交換器のヘッダ装置。(1) Heat exchange tube inlet side connection ports connected to the inlet side of each heat exchange tube and arranged in alignment, and heat exchange tubes connected to the outlet side of the heat exchange tubes and arranged in alignment, respectively. A plate-like body for connecting heat exchange pipes having an outlet side connection port, a fluid inlet side through hole continuously formed in a range including each inlet side connection port from the one side to the other side, and the one side an intermediate plate-like body having fluid outlet-side through holes continuously formed in a range including each outlet-side connection port from one side to the other side; A fluid inlet/outlet pipe connection plate having a fluid inlet pipe connection port formed at a corresponding position, and a fluid outlet pipe connection port connected to a fluid outlet pipe and formed at a position corresponding to one side of the outlet side through hole. 1. A header device for a heat exchanger, characterized in that the plate-like body for connecting heat exchange tubes, the intermediate plate-like body, and the plate-like body for connecting fluid inlet/outlet pipes are polymerized and integrated.
へ至るにしたがって流体の流通抵抗が小さくなるように
開口させたことを特徴とする特許請求の範囲第１項記載
の熱交換器のヘッダ装置。(2) The heat exchanger according to claim 1, wherein the fluid inlet side through holes are opened so that the flow resistance of the fluid decreases as the fluid inlet side goes in a direction away from the fluid inlet pipe. header device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28087590A JPH04155195A (en) | 1990-10-18 | 1990-10-18 | Header device for heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28087590A JPH04155195A (en) | 1990-10-18 | 1990-10-18 | Header device for heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04155195A true JPH04155195A (en) | 1992-05-28 |
Family
ID=17631170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28087590A Pending JPH04155195A (en) | 1990-10-18 | 1990-10-18 | Header device for heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04155195A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5265673A (en) * | 1993-03-02 | 1993-11-30 | Aos Holding Company | Compact manifold for a heat exchanger with multiple identical heating tubes |
| US5447422A (en) * | 1991-11-08 | 1995-09-05 | Hitachi, Ltd. | Air-cooled oil-free rotary-type compressor |
| JP2002206891A (en) * | 2001-01-09 | 2002-07-26 | Nissan Motor Co Ltd | Heat exchanger |
-
1990
- 1990-10-18 JP JP28087590A patent/JPH04155195A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5447422A (en) * | 1991-11-08 | 1995-09-05 | Hitachi, Ltd. | Air-cooled oil-free rotary-type compressor |
| US5265673A (en) * | 1993-03-02 | 1993-11-30 | Aos Holding Company | Compact manifold for a heat exchanger with multiple identical heating tubes |
| EP0614063A2 (en) * | 1993-03-02 | 1994-09-07 | Aos Holding Company | Compact manifold for a heat exchanger with multiple identical heating tubes |
| EP0614063A3 (en) * | 1993-03-02 | 1995-04-19 | Aos Holding Co | Compact manifold for a heat exchanger with multiple identical heating tubes. |
| JP2002206891A (en) * | 2001-01-09 | 2002-07-26 | Nissan Motor Co Ltd | Heat exchanger |
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