JPH0240421B2 - - Google Patents
Info
- Publication number
- JPH0240421B2 JPH0240421B2 JP59263775A JP26377584A JPH0240421B2 JP H0240421 B2 JPH0240421 B2 JP H0240421B2 JP 59263775 A JP59263775 A JP 59263775A JP 26377584 A JP26377584 A JP 26377584A JP H0240421 B2 JPH0240421 B2 JP H0240421B2
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- union
- brazing sheet
- hole
- joining
- 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.)
- Expired - Lifetime
Links
- 238000005219 brazing Methods 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 238000005304 joining Methods 0.000 claims description 9
- 239000011162 core material Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003466 welding Methods 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
- F28F9/0246—Arrangements for connecting header boxes with flow lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/14—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams
- B23K1/18—Soldering, e.g. brazing, or unsoldering specially adapted for soldering seams circumferential seams, e.g. of shells
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、カーエアコン等の熱交換器に用い
られる多穴管とユニオンとの接合方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method of joining a multi-hole pipe and a union used in a heat exchanger such as a car air conditioner.
（従来の技術）
従来、この種の熱交換器は第９図に示すよう
に、アルミニウム押出しの多穴管Ａをサーペンタ
イン状に曲げ、その間にコルゲート加工したアル
ミニウムフイン材Ｂを組付け、ろう付けによつて
一体化し、又この熱交換器と外部配管とを接続す
るものとしてユニオンＣが用いられており、通常
はろう付け後、多穴管Ａに溶接して取付けられる
ものであつた。しかしその際、この組立作業は非
常に多くの工程が必要なため、これに代る方法と
して例えば特公昭52−2704号公報（第１０図参
照）、特公昭52−22747号公報（第１１図参照）に
開示されているような方法が提案されている。こ
の方法は前述ろう付け時に置きろうを用いて同時
に接合する方法であるが、これらはろう付け部の
接合面が線接触であるため、ろう付け部の配置等
に種々の制限があり或いは種々の問題点があるフ
ラツクスろう付け方法を用いないと良好な結果が
得られないものであり、特に多穴管内に熱交換流
体が流れるため十分な気密性が必要であるカーエ
アコン等の配管には上記接合方法は信頼性が著し
く低いという問題点があつた。(Prior art) Conventionally, this type of heat exchanger is made by bending an extruded aluminum multi-hole tube A into a serpentine shape, assembling a corrugated aluminum fin material B between them, and brazing the tube, as shown in Fig. 9. A union C is used to connect the heat exchanger and external piping, and is usually attached to the multi-hole pipe A by welding after brazing. However, since this assembly work requires a large number of steps, alternative methods are available, such as those disclosed in Japanese Patent Publication No. 52-2704 (see Figure 10) and Japanese Patent Publication No. 52-22747 (see Figure 11). A method such as that disclosed in (Reference) has been proposed. This method is a method of joining at the same time using a solder during the brazing described above, but since the joint surfaces of the brazed parts are in line contact, there are various restrictions on the arrangement of the brazed parts, etc. Good results cannot be obtained unless the flux brazing method, which has problems, is used, and the above-mentioned method is especially suitable for car air conditioner piping, which requires sufficient airtightness because the heat exchange fluid flows inside the multi-hole pipe. The bonding method had a problem of extremely low reliability.
（発明が解決しようとする問題点）
そこで、この発明は上記した従来の問題点に鑑
み、これを解決しようとするものであつて、フラ
ツクスを用いない置きろうによつて、多穴管とユ
ニオンを確実に接合することのできる信頼性の高
い接合方法を得るにある。(Problems to be Solved by the Invention) Therefore, in view of the above-mentioned conventional problems, the present invention attempts to solve the problems by providing a method for connecting multi-hole pipes and unions by a placement method that does not use flux. The objective is to obtain a highly reliable joining method that can reliably join.
（問題点を解決するための手段）
これを達成する手段として、この発明は、ユニ
オンの平坦面に心材にろう材を被着したブレージ
ングシートを重接すると共に、多穴管端部を嵌入
した後、該ブレージングシートを加圧加熱してブ
レージングシートのろう材をユニオンおよび多穴
管との接合面内に圧入して多穴管、ユニオンおよ
びブレージングシート心材を密封接合する方法に
ある。(Means for Solving the Problem) As a means for achieving this, the present invention overlaps the flat surface of the union with a brazing sheet whose core material is coated with a brazing material, and after inserting the multi-hole pipe end. , the brazing sheet is heated under pressure and the brazing material of the brazing sheet is press-fitted into the joining surface of the union and the multi-hole pipe, thereby sealingly joining the multi-hole pipe, the union and the brazing sheet core material.
（実施例）
この発明の具体的方法を図面に示す実施例につ
いて以下詳述に説明する。(Example) A specific method of the present invention will be described in detail below with regard to an example shown in the drawings.
第１図はこの発明の第１実施例であつて、１は
多穴管で、アルミニウム材を押出成形し、内面に
平行する複数個、例えば４乃至８個の穴を列設し
た扁平形状のパイプに形成されている。２はアル
ミニウム材よりなるユニオンであつて、連通孔３
の上半部に断面扁平形状の連結孔４が形成され、
且つ上端面は平坦面５に形成されている。６はブ
レージングシートであつて、厚さ２mmのアルミニ
ウム材よりなり、扁平形状の嵌合孔７を穿設した
円板上に形成され、その上下両面に夫々ろう材８
がクラツドされている。このろう材８は10％のシ
リコンと微量のベリリウム、ビスマスを含有した
アルミニウム合金より構成されている。そしてブ
レージングシート６の嵌合孔７に多穴管１を嵌入
した後、多穴管１をユニオン２の連結孔４に嵌合
し、ステンレス或いはインコネル等による適当な
治具によつてブレージングシート６をユニオン２
の平坦面５に押付けて熱交換器を組付ける。次い
で窒素ガス雰囲気の炉内に挿入し、且つブレージ
ングシート上より0.3Kg／cm2の加圧力を加えてユ
ニオン２に押付けつつ600℃の加熱温度で３分間
加熱する。これによつてブレージングシート６に
クラツドされているろう材８はフラツクスを使用
しないでもブレージングシート６の押圧により、
ブレージングシート６とユニオン２の平坦面５お
よびブレージングシート６の嵌合孔７と多穴管１
の外周面ならびに多穴管１の外周面とユニオン２
の連結孔４との夫々の接合面に強制的に押出され
て圧入し第２図の如く接合される。これによつて
70Kg／cm2以上の耐圧力、気密性が得られた。 FIG. 1 shows a first embodiment of the present invention, in which 1 is a multi-hole tube made of extruded aluminum material and has a flat shape with a plurality of parallel holes, for example 4 to 8 holes arranged in a row on the inner surface. formed into a pipe. 2 is a union made of aluminum material, and the communicating hole 3
A connecting hole 4 having a flat cross section is formed in the upper half of the
Moreover, the upper end surface is formed into a flat surface 5. Reference numeral 6 denotes a brazing sheet, which is made of an aluminum material with a thickness of 2 mm, and is formed on a disc with a flat fitting hole 7 formed therein, and a brazing material 8 is placed on each of its upper and lower surfaces.
is being cluttered. This brazing filler metal 8 is composed of an aluminum alloy containing 10% silicon and trace amounts of beryllium and bismuth. After fitting the multi-hole tube 1 into the fitting hole 7 of the brazing sheet 6, the multi-hole tube 1 is fitted into the connecting hole 4 of the union 2, and the brazing sheet 6 is fitted with a suitable jig made of stainless steel or Inconel. union 2
Assemble the heat exchanger by pressing it against the flat surface 5 of. Next, the sheet is inserted into a furnace in a nitrogen gas atmosphere, and a pressure of 0.3 kg/cm 2 is applied from above the brazing sheet to press it against the union 2 while heating at a heating temperature of 600° C. for 3 minutes. As a result, the brazing material 8 clad to the brazing sheet 6 can be pressed by the brazing sheet 6 without using flux.
The brazing sheet 6 and the flat surface 5 of the union 2, the fitting hole 7 of the brazing sheet 6 and the multi-hole pipe 1
and the outer peripheral surface of the multi-hole pipe 1 and the union 2.
They are forcibly extruded and press-fitted into the joint surfaces with the connecting holes 4, and are joined as shown in FIG. Due to this
Pressure resistance and airtightness of 70Kg/cm 2 or more were achieved.
このユニオン２は第３図に示す第２実施例の如
く平坦面５の外周縁をテーパー状にカツト（５
ａ）し、これに同寸法のブレージングシート６を
圧接し、第１実施例と同様な方法によつて加圧加
熱すれば第４図の如くろう付けできる。又第５図
に示す第３実施例の如くユニオン２の平坦面５よ
り大きなブレージングシート６、又は第６図に示
す第４実施例の如くユニオン２の平坦面５より小
さなブレージングシート６を圧接しても良い。 This union 2 is made by cutting the outer periphery of the flat surface 5 into a tapered shape as in the second embodiment shown in FIG.
a) Then, a brazing sheet 6 of the same size is pressure-welded to this and heated under pressure in the same manner as in the first embodiment, so that brazing can be achieved as shown in FIG. Also, a brazing sheet 6 larger than the flat surface 5 of the union 2 as in the third embodiment shown in FIG. 5, or a brazing sheet 6 smaller than the flat surface 5 of the union 2 as in the fourth embodiment shown in FIG. It's okay.
さらにブレージングシート６を第７図に示す第
５実施例の如く２枚重接し、その間と上下両面に
ろう材８をクラツドしても良い。これをユニオン
２の平坦面５に圧接して第１実施例と同様の方法
によつて加圧加熱すれば第８図の如く各接合面に
より確実に圧入されて密封接合することができ
る。 Furthermore, as in the fifth embodiment shown in FIG. 7, two brazing sheets 6 may be placed in contact with each other, and the brazing material 8 may be clad between them and on both the upper and lower surfaces. If this is pressed against the flat surface 5 of the union 2 and heated under pressure in the same manner as in the first embodiment, it can be reliably pressed into each joining surface and hermetically bonded as shown in FIG.
（発明の効果）
以上、各種実施例によつて詳述したように、こ
の発明の方法は、多穴管を嵌合したユニオンにブ
レージングシートを加圧加熱したのでろう材は溶
解して押出され各接合面間に圧入されるものであ
るから、フラツクスを用いなくとも各接合面内に
ろう材は面接触で接合し、且つ熱交換流体のリー
ク通路に対して２重３重にろう付け部が配置され
た構成となり、確実にろう付けされるので、堅牢
にして信頼性の高いろう付けができると共に、ユ
ニオンのブレージングシートとの圧接面は特別な
加工を施すことのない平坦面であるので、加工が
簡単であり、又その接合作業は極めて能率良く行
なうことができる等の優れた効果を有するもので
ある。(Effects of the Invention) As described above in detail through various examples, in the method of the present invention, the brazing sheet is heated under pressure in the union fitted with the multi-hole pipe, so that the brazing material is melted and extruded. Since it is press-fitted between each joint surface, the brazing material is joined by surface contact within each joint surface without using flux, and the brazing material is double and triple brazed against the leak path of the heat exchange fluid. This configuration ensures reliable brazing, making it possible to achieve robust and reliable brazing, and the pressure contact surface of the union with the brazing sheet is a flat surface that does not require any special processing. It has excellent effects such as being easy to process and being able to perform the joining work extremely efficiently.
第１図はこの発明の第１実施例の縦断側面図、
第２図は同じくろう付け後の縦断側面図、第３図
はこの発明の第２実施例の縦断側面図、第４図は
同じくろう付け後の縦断側面図、第５図はこの発
明の第３実施例の縦断側面図、第６図はこの発明
の第４実施例の縦断側面図、第７図はこの発明の
第５実施例の縦断側面図、第８図は同じくろう付
け後の縦断側面図、第９図は従来例の熱交換器全
体の側面図、第１０図、第１１図は従来例の接合
部の縦断側面図を示す。
１……多穴管、２……ユニオン、４……連結
孔、６……ブレージングシート、７……嵌合孔、
８……ろう材。
FIG. 1 is a longitudinal sectional side view of a first embodiment of the invention;
FIG. 2 is a longitudinal side view after brazing, FIG. 3 is a longitudinal side view of the second embodiment of the invention, FIG. 4 is a longitudinal side view after brazing, and FIG. 5 is a longitudinal side view of the second embodiment of the invention. FIG. 6 is a vertical side view of the fourth embodiment of the present invention, FIG. 7 is a vertical side view of the fifth embodiment of the present invention, and FIG. 8 is a longitudinal side view of the fifth embodiment of the present invention. FIG. 9 is a side view of the entire conventional heat exchanger, and FIGS. 10 and 11 are longitudinal sectional side views of the joints of the conventional example. 1... Multi-hole pipe, 2... Union, 4... Connecting hole, 6... Brazing sheet, 7... Fitting hole,
8...Brazing material.
Claims (1)
ブレージングシートを重接すると共に、多穴管端
部を嵌入した後、該ブレージングシートを加圧加
熱してブレージングシートのろう材をユニオンお
よび多穴管との接合面内に圧入して多穴管、ユニ
オンおよびブレージングシート心材を密封接合す
ることを特徴とする熱交換器の多穴管とユニオン
との接合方法。1. A brazing sheet whose core material is coated with brazing material is placed in close contact with the flat surface of the union, and the end of the multi-hole pipe is inserted, and then the brazing sheet is heated under pressure to form the brazing sheet's brazing material into the union and the multi-holes. A method for joining a multi-hole tube and a union of a heat exchanger, characterized in that the multi-hole tube, the union, and the brazing sheet core are hermetically joined by press-fitting into the joining surface with the tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26377584A JPS61144265A (en) | 1984-12-15 | 1984-12-15 | Joining method of perforated pipe and union of heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26377584A JPS61144265A (en) | 1984-12-15 | 1984-12-15 | Joining method of perforated pipe and union of heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61144265A JPS61144265A (en) | 1986-07-01 |
| JPH0240421B2 true JPH0240421B2 (en) | 1990-09-11 |
Family
ID=17394106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26377584A Granted JPS61144265A (en) | 1984-12-15 | 1984-12-15 | Joining method of perforated pipe and union of heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61144265A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5775281A (en) * | 1980-10-30 | 1982-05-11 | Mitsubishi Heavy Ind Ltd | Soldering method of pipe joint |
-
1984
- 1984-12-15 JP JP26377584A patent/JPS61144265A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5775281A (en) * | 1980-10-30 | 1982-05-11 | Mitsubishi Heavy Ind Ltd | Soldering method of pipe joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61144265A (en) | 1986-07-01 |
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