JPH07125529A - Manufacture of pipe joint - Google Patents
Manufacture of pipe jointInfo
- Publication number
- JPH07125529A JPH07125529A JP29734993A JP29734993A JPH07125529A JP H07125529 A JPH07125529 A JP H07125529A JP 29734993 A JP29734993 A JP 29734993A JP 29734993 A JP29734993 A JP 29734993A JP H07125529 A JPH07125529 A JP H07125529A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- joint
- pipe joint
- stepped
- diameter part
- 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
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
-
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、管継手（完成された管
継手、およびさらに曲げなどの成形加工、切削加工、孔
開け加工などを行って完成された管継手にするための管
継手半製品を含む。以下同じ）の製造方法、詳しくは、
継手の一方の端部が円形断面で他方の端部が略長円形断
面であり、カ−エアコンなどと他の配管とを接続するた
めの熱交換器用管継手として特に好適に使用される管継
手の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint (a completed pipe joint, and a pipe joint semi-finished for further forming, such as bending, cutting, and boring to obtain a completed pipe joint. Including products, the same applies hereinafter), for details,
A pipe joint in which one end of the joint has a circular cross section and the other end has a substantially oval cross section, and is particularly suitably used as a pipe joint for a heat exchanger for connecting a car air conditioner and other pipes. Manufacturing method.
【０００２】[0002]
【従来の技術】カーエアコン、例えば、図４に示すよう
に、長円形断面を有するアルミニウムの偏平多穴管１１
を蛇行状に曲成し、偏平多孔管１１の間にコルゲートフ
ィン１２をろう付け接合してなるカークーラーコンデン
サ１０を配管１３に接続する場合、一端部は配管１３と
接続できるよう円形断面の円管部に形成され、他端部は
カークーラーコンデンサ１０の偏平多孔管１１と接続で
きるよう長円形断面の偏平管部に形成された管継手９が
使用される。2. Description of the Related Art A car air conditioner, for example, an aluminum flat multi-hole tube 11 having an oval cross section, as shown in FIG.
When connecting the car cooler condenser 10 which is bent in a meandering shape and brazed and joined the corrugated fins 12 between the flat perforated pipes 11 to the pipe 13, one end has a circular cross section so that the pipe 13 can be connected. A pipe joint 9 which is formed in the pipe portion and the other end of which is formed in the flat pipe portion having an oval cross section so as to be connected to the flat porous pipe 11 of the car cooler condenser 10 is used.
【０００３】また、一側が長円形断面の偏平管部で他側
が円形断面の円管部からなる管を成形し、この管の偏平
管部の端部を塞いで偏平管部に長円形孔を穿設し、該偏
平管の長円形孔の部分をカークーラーコンデンサに溶接
し円管部を冷媒配管に接続して、長円形孔を通じてカー
クーラーコンデンサと配管との間で冷媒を流通させるた
めに使用される熱交換器用継手もみられる。Further, a tube having a flat tube portion having an oval cross section on one side and a circular tube section having a circular cross section on the other side is formed, and an end portion of the flat tube portion of this tube is closed to form an oval hole in the flat tube portion. In order to circulate the refrigerant between the car cooler condenser and the pipe through the oval hole, the oblong hole portion of the flat tube is drilled, the portion of the oval hole of the flat tube is welded to the car cooler condenser, and the circular pipe portion is connected to the refrigerant pipe. The heat exchanger fittings used are also found.
【０００４】従来、このような管継手は、図５、図６に
示すように、円形断面の管を、一側に円形断面部１５を
残して他側を圧縮加工することにより断面略長円形の偏
平管部１４を形成し、円形断面部１５に他の円管１６を
嵌合して溶接することにより製造されていた。しかしな
がら、このようにして製造された管継手においては、溶
接接合が十分でない場合には接合部Ｗから漏洩が生じる
ため、各継手について接合部の厳密な検査を行わなけれ
ばならず、また溶接にも工数がかかるため、継手の生産
性がわるく、製造コストを高くしていた。Conventionally, such a pipe joint has a substantially oval cross section as shown in FIGS. 5 and 6, in which a pipe having a circular cross section is formed by compressing the circular cross section 15 on one side and the other side. Was manufactured by forming the flat tube portion 14 of No. 1 and fitting the other circular tube 16 to the circular cross-section portion 15 and welding. However, in the pipe joint manufactured in this manner, if the welded joint is not sufficient, leakage will occur from the joint W, so a strict inspection of the joint must be performed for each joint, However, since it takes a lot of man-hours, the productivity of the joint is poor and the manufacturing cost is high.
【０００５】アルミニウム製カークーラーコンデンサと
円形断面の配管とを接続する継ぎ目のない一体の管継手
を製造する方法として、アルミニウムのブレージングシ
ートを絞り成形してカップ状の有底筒体とし、該筒体の
底部をさらに小径に再絞りして底部を切除し、大径部と
小径部からなる段付管に成形した後、大径部を偏平管状
に圧潰して管継手を得る方法も開発されている。（特公
昭52−36854 号公報)しかしながら、この方法を適用し
て管継手を製造した場合は、管状体が絞り成形により形
成されるため、製造される管継手の長さに限界があり長
い管継手がつくれないから、管継手に使用上の制約が生
じるという難点がある。As a method for producing a seamless integral pipe joint for connecting a car cooler condenser made of aluminum and a pipe having a circular cross section, an aluminum brazing sheet is drawn to form a cup-shaped bottomed cylindrical body. A method was also developed to obtain a pipe joint by re-drawing the bottom of the body to a smaller diameter, cutting off the bottom, forming a stepped pipe consisting of a large diameter portion and a small diameter portion, and then crushing the large diameter portion into a flat tubular shape. ing. (Japanese Patent Publication No. 52-36854) However, when a pipe joint is manufactured by applying this method, since the tubular body is formed by drawing, the length of the pipe joint to be manufactured is limited and a long pipe is used. Since a joint cannot be made, there is a problem in that the pipe joint has restrictions in use.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、管継手、と
くにカーエアコンなどの熱交換器と他の配管とを接続す
るために好適に使用される管継手を製造する場合におけ
る上記の問題点を解消するためになされたものであり、
その目的は、溶接することなく、偏平管部と円管部とを
一体に成形してなり、長い管継手の製造も可能とする管
継手の製造方法を提供することにある。DISCLOSURE OF INVENTION Problems to be Solved by the Invention The present invention has the above-mentioned problems in manufacturing a pipe joint, particularly a pipe joint suitably used for connecting a heat exchanger such as a car air conditioner and other pipes. It was made to eliminate the
An object of the present invention is to provide a method for manufacturing a pipe joint in which a flat pipe portion and a circular pipe portion are integrally molded without welding and a long pipe joint can be manufactured.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めの本発明による管継手の製造方法は、一端部に円形断
面の円管部、他端部に略長円形断面の偏平管部を有する
管継手を製造する方法において、抽伸加工により大径
部、小径部、および大径部と小径部との間に形成された
段部を具えた段付管を成形する工程、該段付管の大径部
を略長円形断面となるよう圧縮加工する工程を包含する
ことを構成上の特徴とする。In order to achieve the above object, a method of manufacturing a pipe joint according to the present invention comprises a circular pipe portion having a circular cross section at one end and a flat pipe portion having a substantially oval cross section at the other end. In the method for producing a pipe joint having, a step of forming a stepped pipe having a large diameter portion, a small diameter portion, and a step portion formed between the large diameter portion and the small diameter portion by drawing, the stepped pipe The structural feature is that it includes a step of compressing the large-diameter portion so as to have a substantially oval cross section.
【０００８】本発明において、段付管を構成する材料と
しては、例えばＡ３００３合金などのアルミニウム合金
が使用できる。段付管の成形は、最終的に製造すべき管
継手の偏平管部および円管部の断面寸法を考慮した外
径、肉厚を有する断面円形管を用意し、この管の一部を
製造すべき管継手の円管部の寸法まで抽伸加工し、抽伸
を途中で止めることによって行われ、図２に示すよう
に、大径部５、小径部６および段部７を具えた段付管４
を成形する。In the present invention, an aluminum alloy such as an A3003 alloy can be used as the material forming the stepped tube. To form a stepped pipe, prepare a circular cross-section pipe with an outer diameter and wall thickness that take into account the cross-sectional dimensions of the flat pipe portion and circular pipe portion of the pipe joint to be finally manufactured, and manufacture a part of this pipe. A stepped pipe having a large diameter portion 5, a small diameter portion 6 and a step portion 7 as shown in FIG. Four
To mold.
【０００９】つぎに、段付管４の小径部６はそのままと
して、大径部５を、例えば接続する熱交換器の流体通路
用偏平管に適合できる略長円形断面となるよう圧縮加工
し、偏平部８とする。これを所定長さに切断することに
より、図１に示すように、一端部に円形断面の円管部
２、他端部に略長円形断面の偏平管部３を有する本発明
の管継手１が成形される。段付管４を所定長さに切断し
てから大径部５を圧縮加工して管継手に成形してもよ
い。Next, the small-diameter portion 6 of the stepped pipe 4 is left as it is, and the large-diameter portion 5 is subjected to compression processing so as to have a substantially oval cross section which can be fitted to, for example, a flat pipe for fluid passage of a heat exchanger to be connected, The flat portion 8 is used. By cutting this into a predetermined length, as shown in FIG. 1, a pipe joint 1 of the present invention having a circular pipe portion 2 having a circular cross section at one end and a flat pipe portion 3 having a substantially oval cross section at the other end. Is molded. The stepped pipe 4 may be cut into a predetermined length and then the large-diameter portion 5 may be compressed to form a pipe joint.
【００１０】圧縮加工時に段付管を変形加工し、あるい
は圧縮加工により形成された管継手を別の工程で変形加
工して、管継手を直線状以外の形状に成形することもで
き、管継手に対し、その用途に応じて切削加工、孔開け
加工などを行って完成された管継手とすることもでき
る。また、本発明による管継手は、熱交換器用以外の用
途にも適用できることは勿論である。The stepped pipe may be deformed during compression processing, or the pipe joint formed by compression processing may be deformed in another step to form the pipe joint into a shape other than a straight line. On the other hand, it is also possible to perform a cutting process, a drilling process, or the like according to the application to obtain a completed pipe joint. Further, it goes without saying that the pipe joint according to the present invention can be applied to applications other than those for heat exchangers.
【００１１】[0011]
【作用】本発明においては、抽伸加工を利用して大径部
および小径部を具えた段付管を成形し、段付管の大径部
を偏平に加工して、一端部に円形断面の円管部、他端部
に略長円形断面の偏平管部を有する一体の管継手を形成
するから、この管継手を使用して熱交換器などの機器と
配管を接続した場合、継手から流体の漏洩が生じること
がない。管継手の長さは自由に選定でき、管継手の変形
加工も可能であるから、接続すべき機器や配管の配置を
かなり自由に設計することが可能となる。According to the present invention, a stepped tube having a large diameter portion and a small diameter portion is formed by drawing, and the large diameter portion of the stepped tube is flattened so that one end has a circular cross section. A circular pipe part and a flat pipe part with a substantially oval cross section at the other end form an integral pipe joint, so when this pipe joint is used to connect equipment such as a heat exchanger to piping, the fluid will flow from the joint. No leakage will occur. Since the length of the pipe joint can be freely selected and the pipe joint can be deformed, it is possible to design the arrangement of the equipment to be connected and the piping quite freely.
【００１２】[0012]
【実施例】以下、本発明の実施例を説明する。 実施例１ アルミニウム合金(JIS 3003)の管( 外径20.5mm、厚さ1.
5mm)の一部を抽伸加工し、前記寸法の大径部と外径12.7
mm、厚さ1.2mm の小径部を具えた段付アルミニウム合金
管とした。次いでこの段付管の大径部を、幅22.5mm、高
さ10.5mm、厚さ1.5mm 、内壁部の四隅のR1.5mmを有する
偏平部に圧縮加工し、所定の寸法に切断して管継手とし
た。この管継手を使用してカークーラーコンデンサと別
の円形断面の配管を接合したところ健全な接合部が形成
され、継手部からの漏洩は認められなかった。EXAMPLES Examples of the present invention will be described below. Example 1 Aluminum alloy (JIS 3003) pipe (outer diameter 20.5 mm, thickness 1.
5mm) is partially drawn, and the large diameter part and outer diameter 12.7
A stepped aluminum alloy tube with a small diameter of 1.2 mm and a thickness of 1.2 mm was used. Then, the large diameter part of this stepped pipe is compressed into a flat part having a width of 22.5 mm, a height of 10.5 mm, a thickness of 1.5 mm, and R1.5 mm at the four corners of the inner wall part, and cut into the specified dimensions. It was a joint. When a car cooler condenser and a pipe having a different circular cross section were joined using this pipe joint, a sound joint was formed, and no leakage was observed from the joint.
【００１３】[0013]
【発明の効果】以上のとおり、本発明によれば、接合部
のない一体の管継手が成形されるから、継手部からの漏
洩が防止されて信頼性の高い管継手が得られるととも
に、従来のように溶接、溶接部の検査などのための工数
がかからないから、製造工程が簡略化され部品管理工数
も削減されて製造コストの低減が可能となる。As described above, according to the present invention, since an integral pipe joint having no joint portion is formed, leakage from the joint portion can be prevented and a highly reliable pipe joint can be obtained. As described above, since man-hours for welding, inspection of a welded portion, etc. are not required, the manufacturing process is simplified, the man-hours for managing parts are reduced, and the manufacturing cost can be reduced.
【図１】本発明により製造された管継手を示す一部を切
り欠いた斜視図である。FIG. 1 is a partially cutaway perspective view showing a pipe joint manufactured according to the present invention.
【図２】本発明による段付管の一部を断面とともに示す
斜視図である。FIG. 2 is a perspective view showing a part of a stepped pipe according to the present invention together with a cross section.
【図３】段付管の大径部を偏平形状に加工した後の段付
管の一部を断面とともに示す斜視図である。FIG. 3 is a perspective view showing a part of the stepped tube after processing the large diameter portion of the stepped tube into a flat shape together with a cross section.
【図４】管継手の使用状態の一例を示す一部斜視図であ
る。FIG. 4 is a partial perspective view showing an example of a usage state of the pipe joint.
【図５】従来の管継手の製造方式を示す一部を切り欠い
た斜視図である。FIG. 5 is a partially cutaway perspective view showing a conventional pipe joint manufacturing method.
【図６】従来の管継手において、図５の円形断面部に円
管を溶接接合した後の溶接部を示す一部断面図である。6 is a partial cross-sectional view showing a welded portion of a conventional pipe joint after a circular pipe is welded and joined to the circular cross-sectional portion of FIG.
１ 管継手 ２ 円管部 ３ 偏平管部 ４ 段付管 ５ 大径部 ６ 小径部 ７ 段部 ８ 偏平部 ９ 管継手 10 カークーラーコンデンサ 11 偏平多孔管 12 コルゲートフィン 13 配管 14 偏平管 15 円形断面部 16 円管 Ｗ 接合部 1 pipe joint 2 circular pipe portion 3 flat pipe portion 4 step pipe 5 large diameter portion 6 small diameter portion 7 step portion 8 flat portion 9 pipe joint 10 car cooler condenser 11 flat porous pipe 12 corrugated fin 13 pipe 14 flat pipe 15 circular cross section Part 16 circular tube W joint
Claims (1)
長円形断面の偏平管部を有する管継手を製造する方法に
おいて、抽伸加工により大径部、小径部、および大径部
と小径部との間に形成された段部を具えた段付管を成形
する工程、該段付管の大径部を略長円形断面となるよう
圧縮加工する工程を包含することを特徴とする管継手の
製造方法。1. A method for producing a pipe joint having a circular pipe section having a circular cross section at one end and a flat pipe section having a substantially oval cross section at the other end, wherein a large diameter portion, a small diameter portion, and a large diameter are formed by drawing. Characterized by including a step of forming a stepped tube having a stepped portion formed between the stepped portion and the small diameter portion, and a step of compressing the large diameter portion of the stepped tube so as to have a substantially oval cross section. And a method for manufacturing a pipe joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29734993A JPH07125529A (en) | 1993-11-02 | 1993-11-02 | Manufacture of pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29734993A JPH07125529A (en) | 1993-11-02 | 1993-11-02 | Manufacture of pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07125529A true JPH07125529A (en) | 1995-05-16 |
Family
ID=17845365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29734993A Pending JPH07125529A (en) | 1993-11-02 | 1993-11-02 | Manufacture of pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07125529A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008261615A (en) * | 2007-03-16 | 2008-10-30 | Mitsubishi Electric Corp | Heat exchanger, heat exchange device, refrigerator and air conditioner |
| JP2010185614A (en) * | 2009-02-12 | 2010-08-26 | Mitsubishi Electric Corp | Flat pipe joint |
| JP2011127831A (en) * | 2009-12-17 | 2011-06-30 | Mitsubishi Electric Corp | Heat exchanger and refrigerating cycle device including the same |
| JP2012032089A (en) * | 2010-07-30 | 2012-02-16 | Mitsubishi Electric Corp | Finned tube heat exchanger and air conditioner using the same |
| JP2012082986A (en) * | 2010-10-07 | 2012-04-26 | Mitsubishi Electric Corp | Heat exchanger |
| JP2012107841A (en) * | 2010-11-19 | 2012-06-07 | Mitsubishi Electric Corp | Fin tube type heat exchanger and air conditioner using the same |
| JP2013164246A (en) * | 2012-02-13 | 2013-08-22 | Mitsubishi Electric Corp | Heat exchanger and refrigerating air conditioner |
| JP2017506320A (en) * | 2014-02-07 | 2017-03-02 | モーディーン・マニュファクチャリング・カンパニーＭｏｄｉｎｅ Ｍａｎｕｆａｃｔｕｒｉｎｇ Ｃｏｍｐａｎｙ | Heat exchanger tube assembly and method of manufacturing heat exchanger tube assembly |
| EP3828490A4 (en) * | 2018-07-25 | 2021-09-15 | Daikin Industries, Ltd. | Joint |
-
1993
- 1993-11-02 JP JP29734993A patent/JPH07125529A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008261615A (en) * | 2007-03-16 | 2008-10-30 | Mitsubishi Electric Corp | Heat exchanger, heat exchange device, refrigerator and air conditioner |
| JP2010185614A (en) * | 2009-02-12 | 2010-08-26 | Mitsubishi Electric Corp | Flat pipe joint |
| JP2011127831A (en) * | 2009-12-17 | 2011-06-30 | Mitsubishi Electric Corp | Heat exchanger and refrigerating cycle device including the same |
| JP2012032089A (en) * | 2010-07-30 | 2012-02-16 | Mitsubishi Electric Corp | Finned tube heat exchanger and air conditioner using the same |
| JP2012082986A (en) * | 2010-10-07 | 2012-04-26 | Mitsubishi Electric Corp | Heat exchanger |
| JP2012107841A (en) * | 2010-11-19 | 2012-06-07 | Mitsubishi Electric Corp | Fin tube type heat exchanger and air conditioner using the same |
| JP2013164246A (en) * | 2012-02-13 | 2013-08-22 | Mitsubishi Electric Corp | Heat exchanger and refrigerating air conditioner |
| JP2017506320A (en) * | 2014-02-07 | 2017-03-02 | モーディーン・マニュファクチャリング・カンパニーＭｏｄｉｎｅ Ｍａｎｕｆａｃｔｕｒｉｎｇ Ｃｏｍｐａｎｙ | Heat exchanger tube assembly and method of manufacturing heat exchanger tube assembly |
| EP3828490A4 (en) * | 2018-07-25 | 2021-09-15 | Daikin Industries, Ltd. | Joint |
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