JPH0247310B2 - - Google Patents
Info
- Publication number
- JPH0247310B2 JPH0247310B2 JP59263776A JP26377684A JPH0247310B2 JP H0247310 B2 JPH0247310 B2 JP H0247310B2 JP 59263776 A JP59263776 A JP 59263776A JP 26377684 A JP26377684 A JP 26377684A JP H0247310 B2 JPH0247310 B2 JP H0247310B2
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- union
- hole
- brazing sheet
- 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
Classifications
-
- 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
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
- F28D1/0478—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag the conduits having a non-circular cross-section
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (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８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。しかしこの際、この組立作業は非常
に多くの工程が必要なため、これに代わる方法と
して例えば特公昭52−2704号公報（第７図参照）、
特公昭52−22747号公報（第８図参照）、に開示さ
れてするような方法が堤案されている。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
の制限があり或は種々の問題点のあるフラツクス
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, as shown in Fig. 8, 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 it. 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, in this case, this assembly work requires a very large number of steps, so an alternative method is, for example, the method disclosed in Japanese Patent Publication No. 52-2704 (see Figure 7).
A method as disclosed in Japanese Patent Publication No. 52-22747 (see FIG. 8) 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 without using the problematic flux brazing method, especially for car air conditioner piping, which requires sufficient airtightness because heat exchange fluid flows inside multi-hole pipes. The above bonding method has a problem of extremely low reliability.
（発明が解決しようとする課題）
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作業能率の
良い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 connecting a multi-hole pipe and a union by a placement method that does not use flux. The object of the present invention is to obtain a highly reliable joining method that can perform reliable joining and has good work efficiency.
（課題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
オンの一端凹所内に心材にろう材を被着したブレ
ージングシートを嵌入重接すると共に、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 Problems) As a means for achieving this, the present invention provides a structure in which a brazing sheet having a core material coated with a brazing material is inserted and overlapped into a recess at one end of the union, and an end portion of a multi-hole pipe is inserted into the recess. Thereafter, 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.
（実施例）
この発明の具体的方法を図面に示す実施例につ
いて以下詳細に説明する。(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
つ上端面には円形状の凹所５が形成されている。
６はブレージングシートであつて、厚さ６mmのア
ルミニウム材よりなり、扁平形状の嵌号孔７を穿
設した円板状に形成され、その上下両面に夫々ろ
う材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、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の凹所５内に押圧嵌入して熱交換
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６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の凹所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第２図のように接合さ
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 pipe made of extrusion molded aluminum material and has a flat shape in which a plurality of parallel holes, for example 4 to 8 holes, are arranged in a row on the inner surface. is formed. Reference numeral 2 is a union made of aluminum material, in which a connecting hole 4 having a flat cross section is formed in the upper half of the communicating hole 3, and a circular recess 5 is formed in the upper end surface.
Reference numeral 6 denotes a brazing sheet, which is made of an aluminum material with a thickness of 6 mm, and is formed into a disc shape with a flat fitting hole 7, and a brazing material is clad on both the upper and lower surfaces of the brazing sheet. This brazing filler metal 8 is 10%
It is made of an aluminum alloy containing 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 into the recess of the union 2 using an appropriate jig. Assemble the heat exchanger by pressing it into place 5. Next, it is inserted into a furnace with a nitrogen gas atmosphere, and 0.3Kg/
600 cm while pressing against union 2 by applying pressure force of 600 cm 2 .
Heat for 3 minutes at a heating temperature of °C. As a result, even without using flux, the brazing filler metal 8 clad in the brazing sheet 6 is pressed by the brazing sheet 6 into the recess 5 of the brazing sheet 6 and the union 2, and the fitting hole 7 of the brazing sheet 6. The tube 1 is forcibly extruded onto the outer circumferential surface of the tube 1 and the joint surface between the outer circumferential surface of the multi-hole tube 1 and the connecting hole 4 of the union 2, and is press-fitted as shown in FIG. As a result, a pressure resistance of 70 kg/cm 2 or more and airtightness were obtained.
第３図は第２実施例であつて、ブレージングシ
ート３１を２枚重接し、その間と上下両面にろう
材３２をクラツドしたもので、これを上記実施例
のブレージングシート６の代わりに使用すれば、
例えば凹所５を有するユニオン２に用いると、ろ
う材３２は第４図に示すように各接合面に圧入
し、より確実に密封接合することができる。 FIG. 3 shows a second embodiment, in which two brazing sheets 31 are overlapped and a brazing material 32 is clad between them and on both the upper and lower surfaces.If this is used in place of the brazing sheet 6 of the above embodiment, ,
For example, when used in a union 2 having a recess 5, the brazing filler metal 32 is press-fitted into each joining surface as shown in FIG. 4, and more reliable sealing can be achieved.
なお、第５図に示すようにろう材４２を上下両
面にクラツドしたブレージングシート４１を２枚
重接した第３実施例、或は片面にろう材をクラツ
ドしたブレージングシートを複数枚重接したブレ
ージングシートとしてもよい。 In addition, as shown in FIG. 5, a third embodiment in which two brazing sheets 41 having brazing filler metal 42 clad on both upper and lower surfaces are superimposed, or brazing in which a plurality of brazing sheets having brazing filler metal cladding on one side are superimposed. It can also be used as a sheet.
（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特に凹所５の内壁とブ
レージングシート心材との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、そ
の接合作業は極めて能率良く行うことができる等
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 joining surface, especially between the inner wall of the recess 5 and the core material of the brazing sheet, the brazing filler metal is joined to each joining surface by surface contact without using flux, and leakage of the heat exchange fluid is prevented. The brazing parts are arranged in double and triple layers relative to the passageway, and brazing is performed reliably, making it possible to achieve strong and reliable brazing, and to perform the joining work extremely efficiently. It has excellent effects such as:
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図は従来例の
熱交換器全体の側面図、第７図、第８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 side view of the entire heat exchanger of the conventional example, and FIGS. 7 and 8 are longitudinal side views of the joint portion of the conventional example. 1... Multi-hole pipe, 2... Union, 4... Connecting hole, 6... Brazing sheet, 7... Fitting hole,
8...Brazing material.
Claims (1)
したブレージングシートを嵌入重接すると共に、
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 Insert a brazing sheet whose core material is coated with a brazing metal into the recess at one end of the union, and
After fitting the end of the multi-hole pipe, the brazing sheet is heated under pressure and the brazing material of the brazing sheet is press-fitted into the joint surface with the union and the multi-hole pipe, thereby sealing the multi-hole pipe, union, and brazing sheet core material. A method of joining a multi-hole tube and a union of a heat exchanger, characterized by joining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26377684A JPS61144266A (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 |
|---|---|---|---|
| JP26377684A JPS61144266A (en) | 1984-12-15 | 1984-12-15 | Joining method of perforated pipe and union of heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61144266A JPS61144266A (en) | 1986-07-01 |
| JPH0247310B2 true JPH0247310B2 (en) | 1990-10-19 |
Family
ID=17394118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26377684A Granted JPS61144266A (en) | 1984-12-15 | 1984-12-15 | Joining method of perforated pipe and union of heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61144266A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2513332Y2 (en) * | 1990-02-22 | 1996-10-02 | サンデン株式会社 | Heat exchanger |
| WO2024143290A1 (en) * | 2022-12-28 | 2024-07-04 | 三菱電機株式会社 | Bonding method for aluminum materials, manufacturing method for heat exchanger, pressure device, brazed bonded-body, and heat exchanger |
Family Cites Families (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 JP26377684A patent/JPS61144266A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61144266A (en) | 1986-07-01 |
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