JP4258003B2 - Heat exchanger tank - Google Patents

Heat exchanger tank Download PDF

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Publication number
JP4258003B2
JP4258003B2 JP33200799A JP33200799A JP4258003B2 JP 4258003 B2 JP4258003 B2 JP 4258003B2 JP 33200799 A JP33200799 A JP 33200799A JP 33200799 A JP33200799 A JP 33200799A JP 4258003 B2 JP4258003 B2 JP 4258003B2
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Japan
Prior art keywords
tank
edge
plane
side wall
tube plate
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JP33200799A
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JP2001153584A (en
Inventor
多加司 伊神
賢二 竹内
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T.RAD CO., L T D.
Valeo Thermal Systems Japan Corp
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T.RAD CO., L T D.
Valeo Thermal Systems Japan Corp
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    • 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

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  • 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)

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車用熱交換器のタンクの如く、そのチューブプレートとタンク部材とにより構成された量産性の高いものに関する。
【０００２】
【従来の技術】
金属製の熱交換器用タンクは、夫々プレス成形により製造された箱状のタンク本体とその箱状の開口縁に液密に固定されるチューブプレートとからなる。そのチューブプレート及びタンク本体は夫々多数のプレス金型を用い、精度良く成形する必要があった。
【０００３】
【発明が解決しようとする課題】
多数の比較的大きなプレス金型を用いて製造する従来型の熱交換器用タンクは、その金型コストが高価にならざるを得ない。しかもプレス金型は、使用に伴い消耗し精度を保つには所定の生産量に達したら新たな金型を作る必要があった。
そこで本発明は、比較的大きなプレス金型の数を必要最小限に抑えると共に、量産性の高い精度の良い熱交換器用タンクを提供することを課題とする。
【０００５】
【課題を解決するための手段】
請求項１に記載の発明は、細長い金属板の幅方向中央位置に、断面Ｌ型に曲折形成されたＬ型折り曲げ部２ａを有すると共に、その一方の平面に長手方向に定間隔に離間して多数のチューブ挿通孔１が並列して穿設され且つ、その一方の平面の縁部に他方の平面と同一方向へ僅かに断面Ｌ字に形成した小側壁部２ｂを有するチューブプレート２と、
細長い金属板の幅方向中央位置に、断面Ｌ型に曲折形成されたＬ型折り曲げ部３ａを有すると共に、その一方の平面の縁部に他方の平面と同一方向へ僅かに断面Ｌ字に形成した小側壁部３ｂが形成され、その長手方向に平行な両縁が前記チューブプレート２のそれに整合するように形成されたタンク部材３と、
前記チューブプレート２およびタンク部材３の夫々の前記Ｌ型折り曲げ部２ａ，３ａが互いに対角位置になるように、夫々の前記両縁部が嵌着されて矩形管状に形成されてなるタンク本体４と、
そのタンク本体４の両端開口を閉塞する一対の端蓋11と、
を具備し、
前記タンク部材３の前記小側壁部３ｂに近接して一方の平面の縁部に部分的に内面側に位置決め用の凸部３ｃが押出し形成され、
前記チューブ挿通孔１の孔縁部にバーリング加工８が施されて、その孔縁部が内面側に突出形成され、そのバーリング加工８の付根と前記小側壁部２ｂとの間にタンク本体４の板厚分程の空間が形成され、
チューブプレート２およびタンク部材３の夫々の前記小側壁部２ｂ，３ｂとそのバーリング加工８の付根部および凸部３ｃとの間に嵌着整合するように、夫々の他方の縁部に内面側にその板厚分だけ段付に曲折された段付部６を有し、それにより前記チューブプレート２と前記タンク部材３の縁部どうしが互いに嵌着接続されたとき、その接続部外面にタンク本体４の平面から外方に突出部が形成されないように構成され、
互いに接触するそれら各部品間が、炉内で一体にろう付け固定される熱交換器用タンクである。
【０００６】
【発明の実施の形態】
次に、図面に基づいて本発明の各実施の形態につき説明する。
図１は本発明の熱交換器用タンクの要部縦断面図であり、図２はその分解斜視図、図３は同組立状態を示す要部斜視図である。また、図４は本発明の他の実施の形態を示す要部縦断面図であり、図５はそのチューブプレート２の一部破断斜視図である。
図１〜図３に示す熱交換器用タンクは、夫々のアルミニューム板よりなるチューブプレート２とタンク部材３と一対の端蓋11（下側の端蓋11を省略）とを有する。チューブプレート２及びタンク部材３の基本形状は、その幅方向中央位置に横断面が略Ｌ字状に形成されたＬ型折り曲げ部２ａ，３ａを有すると共に、その一方の平面の縁部に断面Ｌ字状に折り曲げた僅かの小側壁部２ｂ，３ｂが立ち上げられている。そして他方の平面の縁部はその板厚分だけ内面側に段付に曲折された段付部６が形成されている。さらに、チューブプレート２およびタンク部材３の夫々の前記小側壁部２ｂ，３ｂに近接して一方の平面の縁部に部分的に内面側に位置決め用の凸部２ｃ，３ｃが押出し形成されている。
【０００７】
このようなチューブプレート２及びタンク部材３は、同一のロールフォーミング機械の同一ロールにより連続的に製造することができる。即ち、多数のフォーミングローラが配置された公知のフォーミング機械に帯状金属板を供給し、平面状の金属板を次第に曲折して、その幅方向中央にＬ型折り曲げ部２ａ，３ａを形成すると共に、夫々の一方の縁部に小側壁部２ｂ，３ｂを立ち上げ形成し且つ、その他方の縁部に段付部６を形成すればよい。
このロールフォーミング機械による製法は一例として、特開昭５８−１８０９２号の「熱交換器用管状体及びその製造方法」その他に記載されている。この実施の形態では、夫々の幅方向中央位置および一方の平面の縁部に横断面をＬ字状に形成する複数のフォーミングローラと、その他方の縁部に段付部６を形成する複数のフォーミングローラとを用いればよい。次いで、チューブプレート２には、順送りプレス等のプレス機械を用いて、多数のチューブ挿通孔１を一方の平面に長手方向に定間隔に離間して穿設する。さらに、プレス機械により夫々の前記小側壁部２ｂ，３ｂに近接して一方の平面の縁部に部分的に内面側に位置決め用の凸部２ｃ，３ｃを押出し形成する。また、タンク部材３にはその長手方向一端に図示しないパイプ挿通孔を穿設する。なお、チューブ挿通孔１やパイプ挿通孔はロールフォーミングの工程の前工程で帯状金属板に予めそれらを穿設しておいてもよい。
【０００８】
なお、チューブプレート２，タンク部材３の外表面には予めアルミニューム合金からなるろう材が被覆されたものを用いる。そしてタンク部材３の段付部６の先端をチューブプレート２の小側壁部２ｂと凸部２ｃとの間に挿入すると共に、チューブプレート２の段付部６の先端をタンク部材３の小側壁部３ｂと凸部３ｃとの間に嵌着して、タンク本体４を形成し、その両端に端蓋11を被嵌する。さらに夫々のチューブ挿通孔１にチューブ９の端部を挿通し、各チューブ９間にフィン10を図３の如く配置する。そして、全体を組立てた状態で高温の炉内に挿入し、各部品に予め被覆されたろう材を溶融し、次いでそれを冷却固化することにより全体を一体的にろう付け固定して熱交換器を完成する。
【０００９】
次に、図４及び図５は本発明の他の熱交換器用タンクの例であり、この例が前記のものと異なる点は、チューブプレート２のチューブ挿通孔１の孔縁部のバーリング加工８の付根と小側壁部２ｂとの間にタンク部材３の板厚分の空間が形成され、そこにタンク部材３の段付部６の先端が嵌着されて位置決めされたことである。
【００１０】
【発明の作用・効果】
本発明の熱交換器用タンクは、チューブプレート２及びタンク部材３の一方の平面の縁部に夫々小側壁部２ｂ，３ｂが曲折され且つ、それに隣接して位置決め用の凸部３ｃが形成され、他方の平面の縁部に段付部６が形成されている。そしてその小側壁部３ｂと位置決め用の凸部３ｃとの間に段付部６が嵌着されて、熱交換器用タンクの外面の突出部を可及的になくし、体裁が良く且つろう付け性の良いタンクとなる。
また、段付部６はバーリング加工８の付根と小側壁部２ｂを位置決めに利用するので、さらに製造が容易で量産性の高い熱交換器用タンクを提供できる。
【図面の簡単な説明】
【図１】本発明の熱交換器用タンクの要部縦断面図。
【図２】同タンクの分解斜視図。
【図３】同タンクの組立状態を示す要部斜視図。
【図４】本発明の熱交換器用タンクの他の実施の形態を示す要部縦断面図。
【図５】同タンクのチューブプレート２の一部破断斜視図。
【符号の説明】
１ チューブ挿通孔
２ チューブプレート
２ａ Ｌ型曲折部
２ｂ 小側壁部
２ｃ 凸部
３ タンク部材
３ａ Ｌ型曲折部
３ｂ 小側壁部
３ｃ 凸部
４ タンク本体
６ 段付部
８ バーリング加工
９ チューブ
10 フィン
11 端蓋[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a high-productivity product composed of a tube plate and a tank member, such as a tank of an automobile heat exchanger.
[0002]
[Prior art]
The metal heat exchanger tank is composed of a box-shaped tank body manufactured by press molding and a tube plate that is liquid-tightly fixed to the box-shaped opening edge. Each of the tube plate and the tank body must be formed with high accuracy using a number of press dies.
[0003]
[Problems to be solved by the invention]
A conventional heat exchanger tank manufactured by using a large number of relatively large press dies has to be expensive in mold cost. Moreover, the press die is consumed with use, and it is necessary to make a new die when a predetermined production amount is reached in order to maintain accuracy.
SUMMARY OF THE INVENTION An object of the present invention is to provide a heat exchanger tank with high accuracy and high mass productivity while minimizing the number of relatively large press dies.
[0005]
[Means for Solving the Problems]
The invention according to claim 1 has an L-shaped bent portion 2a bent in an L-shaped cross section at the center position in the width direction of an elongated metal plate, and is spaced apart at regular intervals in the longitudinal direction on one plane thereof. A tube plate 2 having a plurality of tube insertion holes 1 formed in parallel and having a small side wall portion 2b formed at the edge of one plane in the same direction as the other plane in a slightly L-shaped cross section;
At the center in the width direction of the elongated metal plate, it has an L-shaped bent portion 3a bent in an L-shaped cross section, and is slightly formed in an L-shaped cross section at the edge of one plane in the same direction as the other plane. A tank member 3 having a small side wall portion 3b formed so that both edges parallel to the longitudinal direction thereof are aligned with those of the tube plate 2;
The tank main body 4 is formed in a rectangular tubular shape by fitting both the edge portions so that the L-shaped bent portions 2a and 3a of the tube plate 2 and the tank member 3 are diagonal to each other. When,
A pair of end lids 11 for closing the opening at both ends of the tank body 4;
Comprising
In the vicinity of the small side wall portion 3b of the tank member 3, a convex portion 3c for positioning is extruded and formed partially on the inner surface side at the edge of one plane,
A burring process 8 is applied to the hole edge of the tube insertion hole 1, and the hole edge protrudes toward the inner surface, and the tank body 4 is formed between the root of the burring process 8 and the small side wall 2 b. A space about the plate thickness is formed,
On the inner surface side of the other edge portion of the tube plate 2 and the tank member 3 so as to be fitted and aligned between the small side wall portions 2b and 3b of the tube plate 2 and the base portion of the burring process 8 and the convex portion 3c. A stepped portion 6 bent in a stepped amount corresponding to the plate thickness is provided so that when the tube plate 2 and the edge of the tank member 3 are fitted and connected to each other, the tank body is attached to the outer surface of the connecting portion. 4 is configured so that no protrusion is formed outward from the plane of 4,
A heat exchanger tank that is brazed and fixed integrally in a furnace is provided between these parts that are in contact with each other.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, each embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view of a main part of a heat exchanger tank according to the present invention, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a perspective view of a main part showing the assembled state. FIG. 4 is a longitudinal sectional view of a main part showing another embodiment of the present invention, and FIG. 5 is a partially broken perspective view of the tube plate 2.
The tank for heat exchangers shown in FIGS. 1 to 3 has a tube plate 2 made of each aluminum plate, a tank member 3, and a pair of end lids 11 (the lower end lid 11 is omitted). The basic shape of the tube plate 2 and the tank member 3 has L-shaped bent portions 2a and 3a having a substantially L-shaped cross section at the center in the width direction, and a cross-section L at the edge of one plane. A few small side wall portions 2b and 3b bent in a letter shape are raised. Further, the edge of the other plane is formed with a stepped portion 6 that is bent stepwise on the inner surface side by the thickness of the plate. Further, in the vicinity of the small side wall portions 2b and 3b of the tube plate 2 and the tank member 3, projections 2c and 3c for positioning are formed by extrusion on the inner surface side at the edge of one plane. .
[0007]
Such a tube plate 2 and the tank member 3 can be continuously manufactured by the same roll of the same roll forming machine. That is, a belt-shaped metal plate is supplied to a known forming machine in which a large number of forming rollers are arranged, and the flat metal plate is gradually bent to form L-shaped bent portions 2a and 3a at the center in the width direction, and The small side walls 2b and 3b may be raised and formed on one edge of each, and the stepped portion 6 may be formed on the other edge.
An example of the production method using this roll forming machine is described in JP-A-58-18092, “Tube for Heat Exchanger and Method for Producing the Same” and others. In this embodiment, a plurality of forming rollers that form L-shaped cross sections at the center in the width direction and at the edge of one plane, and a plurality of steps 6 that form the stepped portion 6 at the other edge. A forming roller may be used. Next, a large number of tube insertion holes 1 are formed in one plane at regular intervals in the longitudinal direction using a press machine such as a progressive press. Further, by a pressing machine, positioning convex portions 2c and 3c are formed by extrusion on the inner surface side in the vicinity of the respective small side wall portions 2b and 3b partially at the edge of one plane. The tank member 3 is provided with a pipe insertion hole (not shown) at one end in the longitudinal direction. Note that the tube insertion hole 1 and the pipe insertion hole may be formed in advance in the band-shaped metal plate in a step before the roll forming step.
[0008]
The outer surface of the tube plate 2 and the tank member 3 is previously coated with a brazing material made of an aluminum alloy. And while inserting the front-end | tip of the step part 6 of the tank member 3 between the small side wall part 2b and the convex part 2c of the tube plate 2, the front-end | tip of the step part 6 of the tube plate 2 is the small side wall part of the tank member 3. It fits between 3b and the convex part 3c, the tank main body 4 is formed, and the end cover 11 is fitted by the both ends. Further, the end portions of the tubes 9 are inserted into the respective tube insertion holes 1, and the fins 10 are arranged between the tubes 9 as shown in FIG. Then, the whole is assembled and inserted into a high-temperature furnace, the brazing material pre-coated on each part is melted, and then the whole is cooled and solidified to braze and fix the whole integrally. Complete.
[0009]
Next, FIG. 4 and FIG. 5 are examples of another heat exchanger tank of the present invention, and this example is different from the above-described one in that the burring process 8 is performed on the edge of the tube insertion hole 1 of the tube plate 2. That is, a space corresponding to the plate thickness of the tank member 3 is formed between the root and the small side wall portion 2b, and the tip of the stepped portion 6 of the tank member 3 is fitted and positioned therein.
[0010]
[Operation and effect of the invention]
In the heat exchanger tank of the present invention, the small side wall portions 2b and 3b are bent at the edge of one plane of the tube plate 2 and the tank member 3, respectively, and a positioning convex portion 3c is formed adjacent thereto. A stepped portion 6 is formed at the edge of the other plane. And the step part 6 is fitted between the small side wall part 3b and the positioning convex part 3c, and the protrusion part of the outer surface of the heat exchanger tank is eliminated as much as possible. It will be a good tank.
Further, since the stepped portion 6 uses the base of the burring process 8 and the small side wall portion 2b for positioning, it is possible to provide a heat exchanger tank that is easier to manufacture and has high productivity.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an essential part of a tank for a heat exchanger according to the present invention.
FIG. 2 is an exploded perspective view of the tank.
FIG. 3 is a perspective view of a main part showing an assembled state of the tank.
FIG. 4 is a longitudinal sectional view of a main part showing another embodiment of the heat exchanger tank of the present invention.
FIG. 5 is a partially broken perspective view of the tube plate 2 of the same tank.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tube insertion hole 2 Tube plate 2a L-shaped bending part 2b Small side wall part 2c Convex part 3 Tank member 3a L-shaped bending part 3b Small side wall part 3c Convex part 4 Tank main body 6 Step part 8 Burring process 9 Tube
10 fins
11 End cover

Claims (1)

細長い金属板の幅方向中央位置に、断面Ｌ型に曲折形成されたＬ型折り曲げ部２ａを有すると共に、その一方の平面に長手方向に定間隔に離間して多数のチューブ挿通孔１が並列して穿設され且つ、その一方の平面の縁部に他方の平面と同一方向へ僅かに断面Ｌ字に形成した小側壁部２ｂを有するチューブプレート２と、
細長い金属板の幅方向中央位置に、断面Ｌ型に曲折形成されたＬ型折り曲げ部３ａを有すると共に、その一方の平面の縁部に他方の平面と同一方向へ僅かに断面Ｌ字に形成した小側壁部３ｂが形成され、その長手方向に平行な両縁が前記チューブプレート２のそれに整合するように形成されたタンク部材３と、
前記チューブプレート２およびタンク部材３の夫々の前記Ｌ型折り曲げ部２ａ，３ａが互いに対角位置になるように、夫々の前記両縁部が嵌着されて矩形管状に形成されてなるタンク本体４と、
そのタンク本体４の両端開口を閉塞する一対の端蓋11と、
を具備し、
前記タンク部材３の前記小側壁部３ｂに近接して一方の平面の縁部に部分的に内面側に位置決め用の凸部３ｃが押出し形成され、
前記チューブ挿通孔１の孔縁部にバーリング加工８が施されて、その孔縁部が内面側に突出形成され、そのバーリング加工８の付根と前記小側壁部２ｂとの間にタンク本体４の板厚分程の空間が形成され、
チューブプレート２およびタンク部材３の夫々の前記小側壁部２ｂ，３ｂとそのバーリング加工８の付根部および凸部３ｃとの間に嵌着整合するように、夫々の他方の縁部に内面側にその板厚分だけ段付に曲折された段付部６を有し、それにより前記チューブプレート２と前記タンク部材３の縁部どうしが互いに嵌着接続されたとき、その接続部外面にタンク本体４の平面から外方に突出部が形成されないように構成され、
互いに接触するそれら各部品間が、炉内で一体にろう付け固定される熱交換器用タンク。At the center in the width direction of the elongated metal plate, there is an L-shaped bent portion 2a bent in an L-shaped cross section, and a large number of tube insertion holes 1 are arranged in parallel on one of the planes at regular intervals in the longitudinal direction. A tube plate 2 having a small side wall portion 2b that is formed in the same direction as the other plane at the edge of one plane,
At the center in the width direction of the elongated metal plate, it has an L-shaped bent portion 3a bent in an L-shaped cross section, and is slightly formed in an L-shaped cross section at the edge of one plane in the same direction as the other plane. A tank member 3 having a small side wall portion 3b formed so that both edges parallel to the longitudinal direction thereof are aligned with those of the tube plate 2;
The tank main body 4 is formed in a rectangular tubular shape by fitting both the edge portions so that the L-shaped bent portions 2a and 3a of the tube plate 2 and the tank member 3 are diagonal to each other. When,
A pair of end lids 11 for closing the opening at both ends of the tank body 4;
Comprising
In the vicinity of the small side wall portion 3b of the tank member 3, a convex portion 3c for positioning is extruded and formed partially on the inner surface side at the edge of one plane,
A burring process 8 is applied to the hole edge of the tube insertion hole 1, and the hole edge protrudes toward the inner surface, and the tank body 4 is formed between the root of the burring process 8 and the small side wall 2 b. A space about the plate thickness is formed,
On the inner surface side of the other edge portion of the tube plate 2 and the tank member 3 so as to be fitted and aligned between the small side wall portions 2b and 3b of the tube plate 2 and the base portion of the burring process 8 and the convex portion 3c. A stepped portion 6 bent in a stepped amount corresponding to the plate thickness is provided so that when the tube plate 2 and the edge of the tank member 3 are fitted and connected to each other, the tank body is attached to the outer surface of the connecting portion. 4 is configured so that no protrusion is formed outward from the plane of 4,
A tank for a heat exchanger in which the parts in contact with each other are brazed and fixed together in a furnace.
JP33200799A 1999-11-22 1999-11-22 Heat exchanger tank Expired - Fee Related JP4258003B2 (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003028591A (en) * 2001-07-16 2003-01-29 Denso Corp Heat exchanger
KR101318627B1 (en) * 2006-11-17 2013-10-16 한라비스테온공조 주식회사 Heat Exchanger Header Pipe Structure
JP2012247093A (en) * 2011-05-26 2012-12-13 T Rad Co Ltd Flat tubes for header-plate-less heat exchanger

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