JPH04172175A - Method for brazing pipes in machine room of refrigerator or the like - Google Patents
Method for brazing pipes in machine room of refrigerator or the likeInfo
- Publication number
- JPH04172175A JPH04172175A JP30073790A JP30073790A JPH04172175A JP H04172175 A JPH04172175 A JP H04172175A JP 30073790 A JP30073790 A JP 30073790A JP 30073790 A JP30073790 A JP 30073790A JP H04172175 A JPH04172175 A JP H04172175A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- brazing
- brazing material
- pipes
- side pipe
- 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
- 238000005219 brazing Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000003780 insertion Methods 0.000 claims abstract description 26
- 230000037431 insertion Effects 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 38
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000000945 filler Substances 0.000 abstract description 4
- 230000006698 induction Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- QFXZANXYUCUTQH-UHFFFAOYSA-N ethynol Chemical group OC#C QFXZANXYUCUTQH-UHFFFAOYSA-N 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、冷蔵庫等の機械室のパイプのロウ付け方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a method for brazing pipes in a machine room of a refrigerator or the like.
（従来の技術）
従来より、冷蔵庫の冷凍サイクルを構成する圧縮機やサ
クションパイプ等を収納した機械室は、冷蔵庫の底部後
方に配されている。そして、この機械室内の冷凍サイク
ルのパイプの接合は、気密性を保持するためロウ付け方
法によって行われていた。(Prior Art) Conventionally, a machine room housing a compressor, a suction pipe, etc. that constitute the refrigeration cycle of a refrigerator has been arranged at the rear of the bottom of the refrigerator. The pipes of the refrigeration cycle in the machine room were joined by brazing to maintain airtightness.
このロウ付けの方法としては、いわゆるガスロウ付け方
法が用いられている。その方法は、接合する部品の両側
にフラックスを塗ると共に、ロウ材にもフラックスを塗
布し、酸素アセチレン炎を接合したい部品の外側に当て
て、ロウ材を加熱し、ロウ付けを行っていた。As this brazing method, a so-called gas brazing method is used. The method was to apply flux to both sides of the parts to be joined, as well as to the solder metal, and then apply an oxy-acetylene flame to the outside of the parts to heat the solder metal and perform brazing.
（発明が解決しようとする課題）
上記ガスロウ付け方法であると、ロウ付けを行った個々
の接合点で、火力及び炎を当てている時間がそれぞれ異
なり、また、ロウ付け作業を行う作業者の技能にも個人
差があること等から、製品仕上りにばらつきが生じると
いう問題があった。(Problems to be Solved by the Invention) With the above gas brazing method, the heating power and the time for which the flame is applied are different for each joint point that is brazed. Due to individual differences in skill, etc., there was a problem of variations in product finish.
また、ガスロウ材は方法は、炎からの熱伝導による加熱
のため、炎の当る部分だけが加熱されるといういわゆる
局部加熱を起す。ところが、この局部加熱は、ロウ材へ
の熱の浸透具合が悪いという問題があった。In addition, gas brazing materials are heated by heat conduction from the flame, which causes so-called local heating in which only the area that is hit by the flame is heated. However, this local heating has the problem of poor penetration of heat into the brazing material.
更に、ロウ付けを行なう機械室内部は狭く、そのロウ付
け作業が非常に行いにくい。また、炎による加熱のため
、炎が接合部分以外の部分に当ると、部品の表面がこげ
たりするという問題もあった。Furthermore, the inside of the machine room where brazing is performed is narrow, making it very difficult to perform the brazing work. Furthermore, since the flame is used for heating, there is a problem in that if the flame hits a part other than the joint part, the surface of the part may be burnt.
そこで、本出願人は先に、円環状のロウ材を配した一方
のパイプに、他方のパイプを接続した後、この接続部分
に加熱コイルを近接させ、加熱コイルに流れる高周波誘
導電流により接続部分を加熱してロウ材を溶融すること
によりパイプ同士をロウ付けする方法を提案した（特願
平２−６２３５３号）。Therefore, the applicant first connected one pipe with an annular brazing material to the other pipe, and then brought a heating coil close to this connection, and used a high-frequency induced current flowing through the heating coil to connect the connection. proposed a method of brazing pipes together by heating and melting the brazing material (Japanese Patent Application No. 2-62353).
しかしながら、このロウ付けする方法であると、接続部
分の振動や加熱コイルの接触等によって、円環状のロウ
材がロウ付けする位置よりずれてしまい、正常なロウ付
けが出来ない場合があった。However, with this brazing method, the annular brazing material may be displaced from the brazing position due to vibration of the connecting portion, contact with the heating coil, etc., and normal brazing may not be possible.
そこで、本発明は、上記問題点を解決し、冷蔵庫等の機
械室内部のパイプ同士の正確なロウ付けが行えるロウ付
け方法を提供するものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems and provides a brazing method that can accurately braze pipes inside a machine room such as a refrigerator.
［発明の構成］
（課題を解決するための手段）
本発明の冷蔵庫等の機械室等のパイプのロウ付け方法は
、一方の挿入側パイプの端部の径を絞って縮管を形成し
、この挿入側パイプの端部に円環状のロウ材を嵌め込み
、この端部を他方の非挿入側パイプの端部に挿入し接続
してロウ材を固定後、前記接続部分に加熱コイルを近接
させ、加熱コイルに流れる高周波誘導電流によりロウ材
を加熱溶融することによりロウ付けした方法である。[Structure of the Invention] (Means for Solving the Problems) The method of brazing pipes in a machine room of a refrigerator or the like of the present invention includes reducing the diameter of the end of one insertion side pipe to form a condensed pipe, A circular brazing material is fitted into the end of the inserted pipe, and this end is inserted and connected to the end of the other non-inserted pipe to fix the brazing material, and then a heating coil is brought close to the connection part. This is a method in which brazing is performed by heating and melting the brazing material using a high-frequency induced current flowing through a heating coil.
（作 用）
上記構成の冷蔵庫等の機械室のパイプのロウ付け方法で
あると、一方の挿入側パイプの端部の径を他方のパイプ
の内径より絞って縮管を形成する。この絞った端部に円
環状のロウ材を嵌め込む。(Function) In the method of brazing pipes in a machine room of a refrigerator or the like configured as described above, the diameter of the end of one insertion-side pipe is narrowed from the inside diameter of the other pipe to form a condensed pipe. An annular brazing material is fitted into this narrowed end.
そして、一方の挿入側パイプをロウ材を配したまま、他
方の非挿入側パイプの端部に挿入して接続する。これに
より、円環状のロウ材は、挿入側パイプの端部の基部と
非挿入側パイプの先端部とに挾まれて、その位置は完全
に固定される。この後、この接続した部分に加熱コイル
を近接させ、該加熱コイルに高周波誘導電流を流し、こ
の誘導電流により、接続部分を加熱してロウ材を溶融し
て、ロウ付けを行う。Then, one insertion-side pipe is inserted and connected to the end of the other non-insertion-side pipe with the brazing material placed thereon. As a result, the annular brazing material is sandwiched between the base of the end of the inserted pipe and the tip of the non-inserted pipe, and its position is completely fixed. Thereafter, a heating coil is brought close to the connected portion, and a high-frequency induced current is passed through the heating coil, and the induced current heats the connected portion and melts the brazing material, thereby performing brazing.
（実施例） 以下、本発明の一実施例を図面に基づいて説明する。(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.
符号１０は、冷蔵庫であって、この冷蔵庫底部の後方に
は、第２図に示すように機械室１２が設けられている。Reference numeral 10 denotes a refrigerator, and a machine room 12 is provided at the rear of the bottom of the refrigerator, as shown in FIG.
この機械室１２の底面には、圧縮機１４が配されると共
に、この機械室１２内部には、サクションパイプ１６等
の冷凍サイクルを構成するためのパイプが配管されてい
る。A compressor 14 is disposed on the bottom surface of the machine room 12, and pipes such as a suction pipe 16 for forming a refrigeration cycle are installed inside the machine room 12.
符号１５は、第１図に示すように高周波ロウ材は装置で
ある。Reference numeral 15 is a high-frequency brazing device as shown in FIG.
符号Ｉｌｌは、高周波変換トランスであり、この高周波
変換トランス１８には、高周波加熱電源２ｏより高周波
ケーブル２２を経て電源が供給される。また、この高周
波変換トランス１８より手持ち部２４が突出している。Reference numeral Ill denotes a high frequency conversion transformer, and power is supplied to this high frequency conversion transformer 18 from a high frequency heating power source 2o via a high frequency cable 22. Further, a handheld portion 24 protrudes from the high frequency conversion transformer 18.
さらに、手持ち部２４をもって、作業者が作業を行い易
くするために、高周波変換トランス１８は、工場等の天
井に設けられた滑車２６がら吊り下げられた鎖２８にぶ
らさげられており、作業者は手持ち部２４を自由に移動
させることができる。Furthermore, in order to make it easier for the worker to carry out the work while holding the hand-held portion 24, the high frequency conversion transformer 18 is suspended from a chain 28 suspended from a pulley 26 installed on the ceiling of a factory or the like. The handheld portion 24 can be moved freely.
次に、第７図と第８図に示すように手持ち部２４の詳細
について下記に説明する。Next, as shown in FIGS. 7 and 8, details of the hand-held portion 24 will be described below.
高周波変換トランス１８の前面より、銅板よりなる電極
板３０が突設されている。この電極板３ｏの先端部には
、銅製のパイプのワークコイル３２が設けられ、このワ
ークコイル３２の両端部は電極板３Ｄに沿って、高周波
変換トランス１８の方向に延びている。電極板３０の先
端から延びたワークコイル３２は、湾曲しつつ上方に折
り曲げられる。さらに、平面０字型に折り曲げられる。An electrode plate 30 made of a copper plate is protruded from the front surface of the high frequency conversion transformer 18. A work coil 32 made of a copper pipe is provided at the tip of the electrode plate 3o, and both ends of the work coil 32 extend in the direction of the high frequency conversion transformer 18 along the electrode plate 3D. The work coil 32 extending from the tip of the electrode plate 30 is bent upward while being curved. Furthermore, it can be bent into a 0-shaped plane.
この折り曲げられた後下方に湾曲され、前記０字型に折
り曲げられる。そして、ワークコイル３２の下部に沿っ
て上方に折り曲げられて、再び、平面Ｕ字状に折り曲げ
られる。その後、前記ワークコイルの湾曲部に沿って再
び下方に曲げられて、電極板３０の方向に向っている。After this bending, it is curved downward and bent into the above-mentioned 0-shape. Then, it is bent upward along the lower part of the work coil 32, and then bent again into a planar U-shape. Thereafter, it is bent downward again along the curved portion of the work coil toward the electrode plate 30 .
これにより、ワークコイル３２は、平面Ｕ字状に形成さ
れ、このＵ字型の開口部３２２を円管形のパイプの側方
からへ被せることができ、さらに、被せたあとはワーク
コイル３２全体でパイプをつつむようにすることができ
る。したがって、ワークコイル３２に高周波電流が流れ
ると、このワークコイル３２につりまれたパイプに誘導
電流又はうず電流が流れて、パイプが短時間で加熱され
る。As a result, the work coil 32 is formed into a U-shape in plan view, and the U-shaped opening 322 can be placed over the cylindrical pipe from the side. You can wrap the pipe with Therefore, when a high frequency current flows through the work coil 32, an induced current or eddy current flows through the pipe suspended from the work coil 32, and the pipe is heated in a short time.
なお、磁性のある金属パイプでは誘導電流による加熱が
主で、うず電流による加熱が従であるが、非磁性の金属
パイプでは後者が主である。Note that in magnetic metal pipes, heating is mainly performed by induced current, and secondary heating is performed by eddy current, but in non-magnetic metal pipes, heating is mainly performed by the latter.
電極板３０及びワークコイル３２同士が接触する部分に
は、絶縁フィルムが設けられている。ワークコイル３２
は、電極板３２の先端上方に設けられた支持板３Ｂによ
って固定されている。An insulating film is provided at a portion where the electrode plate 30 and the work coil 32 contact each other. Work coil 32
is fixed by a support plate 3B provided above the tip of the electrode plate 32.
第５図に示すように、上記高周波ロウ材は装置１５によ
ってロウ付けされるロウ材３４は、銀と銅と亜鉛の合金
であり、線材に加工された後、曲げられて、円環状に形
成されている。このロウ材３４の溶融点は、約８００℃
であり、このロウ材３４を溶融する際のワークコイル３
２の温度は、８００℃以上に上昇している。As shown in FIG. 5, the high-frequency brazing material 34 to be brazed by the device 15 is an alloy of silver, copper, and zinc, and after being processed into a wire rod, it is bent and formed into an annular shape. has been done. The melting point of this brazing material 34 is approximately 800°C.
The work coil 3 when melting this brazing material 34
The temperature in No. 2 has risen to over 800°C.
符号３８は、この冷凍サイクルの一部のパイプであり、
その先端部３８ａは絞られており、縮管となっている。The code 38 is a part of the pipe of this refrigeration cycle,
The distal end portion 38a is constricted to form a contracted tube.
符号４０は前記パイプ３８の先端部３８ａを挿入するこ
とができるパイプであって、拡管となっている。Reference numeral 40 is a pipe into which the distal end portion 38a of the pipe 38 can be inserted, and is an expanded pipe.
なお、第４図に示すように、挿入側パイプ３８の縮管と
なっている長さをＬＬとし、パイプ４０の拡管となって
いる長さをＬ２とし、円環状のロウ材３４の太さをｄと
すると、Ｌｌ −Ｌ２ ＋ｄの関係が成立するように各
パイプ３８．４０の先端部を形成して・おく。As shown in FIG. 4, the length of the insertion-side pipe 38 when the tube is contracted is LL, the length when the pipe 40 is expanded is L2, and the thickness of the annular brazing filler metal 34 is LL. Let d be the tip of each pipe 38, 40 so that the relationship Ll - L2 + d is established.
冷蔵庫ｌＯの機械室１２の冷凍サイクルの配管のための
ロウ付け作業を上記高周波ロウ材は装［１５を用いた一
実施例について説明する（第３図から第６図参照）。The brazing work for the piping of the refrigeration cycle in the machine room 12 of the refrigerator 10 will be described with reference to an embodiment using the above-mentioned high-frequency brazing material 15 (see FIGS. 3 to 6).
まず、あらかじめ使用する円環状のロウ材３４を多数準
備しておく。次に、挿入側のパイプ３Ｂの絞れた端部Ｈ
ａに前記円環状のロウ材３４を嵌め込み（第３図参照）
、次にパイプ４０の端部４０ａに挿入側パイプ３８の端
部Ｈａを嵌め込む（第４図参照）。これにより、円環状
のロウ材３４は、挿入側パイプ３８の先端部３８ａの基
部３１１ｂとパイプ４０の端１１５４０ａの先端部４０
ｂとに挾まれて、その位置は完全に固定される（第４図
参照）。First, a large number of annular brazing materials 34 to be used are prepared in advance. Next, the narrowed end H of the pipe 3B on the insertion side
Insert the annular brazing material 34 into a (see Fig. 3).
Next, the end portion Ha of the insertion side pipe 38 is fitted into the end portion 40a of the pipe 40 (see FIG. 4). As a result, the annular brazing material 34 is attached to the base 311b of the tip 38a of the insertion side pipe 38 and the tip 40 of the end 11540a of the pipe 40.
b, and its position is completely fixed (see Figure 4).
次に、手持ち部２４のワークコイル３２のＵ字型の先端
部３２ａを前記接合部に側方より被せ、高周波誘導電流
を流すとパイプ３８とパイプ４０との加熱が開始される
（第５図参照）。この時の誘導電流の出力と時間は、高
周波加熱電源２０において出力設定ダイヤルやタイマ等
で設定しておく。加熱が開始されると、円環状のロウ材
３４が溶融して、パイプ３８とパイプ４０との隙間に流
れ込み両者を接合する（第６図参照）。Next, the U-shaped tip 32a of the work coil 32 of the hand-held portion 24 is placed over the joint from the side, and a high-frequency induced current is applied to start heating the pipes 38 and 40 (Fig. 5). reference). The output and time of the induced current at this time are set using an output setting dial, a timer, etc. in the high-frequency heating power source 20. When heating is started, the annular brazing material 34 melts and flows into the gap between the pipes 38 and 40 to join them together (see FIG. 6).
上記高周波ロウ材は装置１５によるロウ材３４の接合方
法であると、加熱条件を高周波加熱電源２゜によって、
その出力と出力時間を設定できるため、作業者の技能の
差によってロウ付けの状態が変わることがない。特に、
加熱のためのスタートボタンをＯＮした後、設定の出力
時間が終わるまでランプが点灯するようにしておけば、
ランプが消えるまで、ワークコイル３２をパイプ３８，
４０当てていれば、常に同じ時間及び出力で接合作業が
できる。The above-mentioned high-frequency brazing material is a method of joining the brazing material 34 using the apparatus 15, and the heating conditions are set to 2 degrees by a high-frequency heating power source.
Since the output and output time can be set, the brazing condition does not change depending on the skill level of the workers. especially,
After turning on the start button for heating, if you leave the lamp on until the set output time is over,
Connect the work coil 32 to the pipe 38 until the lamp goes out.
40, the welding work can always be done in the same amount of time and output.
また、高周波による加熱のため、炎を用いることがなく
、接合部周辺に炎が当たってこげることがない。使用す
るロウ材３４を作業前に円環状に加工しておき、加熱前
にパイプ３８．４０にセットするため、使用するロウ材
３４の量を常に一定となり、使用量の管理も確実にでき
、更に、コストダウンに繋がる。ガスロウ材は方法とは
違い、局部加熱が起ることがないので、ロウ材浸透がよ
く、接合不良が起ったりすることがない。Furthermore, since the heating is performed using high frequency waves, there is no need to use flame, and the area around the joint will not be burnt by the flame. Since the brazing material 34 to be used is processed into an annular shape before the work and is set in the pipe 38, 40 before heating, the amount of the brazing material 34 to be used is always constant, and the amount used can be controlled reliably. Furthermore, it leads to cost reduction. Unlike other methods, gas brazing does not cause local heating, so the brazing material penetrates well and does not cause bonding defects.
また、円環状のロウ材３４は、挿入側パイプ３８の端部
３８ａの基部３８ｂとパイプ４０の端部４０ａの先端部
４０ｂとに挟まれて、その位置は完全に固定されるため
、ロウ付けされる位置は常に同じ位置となる。円環状の
ロウ材３４の内径は、挿入側パイプ３８の端部３８ａの
外径より大きくてもロウ付けが可能なため、ロウ材３４
を圧入する必要がなく容易にロウ材３４を挿入側パイプ
３８にセットできる。Further, the annular brazing material 34 is sandwiched between the base 38b of the end 38a of the insertion pipe 38 and the tip 40b of the end 40a of the pipe 40, and its position is completely fixed. The location will always be the same. Even if the inner diameter of the annular brazing material 34 is larger than the outer diameter of the end 38a of the insertion side pipe 38, brazing can be performed.
The brazing material 34 can be easily set in the insertion side pipe 38 without having to press-fit it.
さらに、高周波ケーブル２２によって、手持ち部２４が
自由な方向に向くことができるので、冷蔵庫１０の機械
室１２の内部のように狭い空間でも、その作業が非常に
行いやすく、特にワークコイル３２がＵ字状に構成され
ているため、パイプ３８，４０近接させることが非常に
容易である。従って、その作業効率が上昇する。Furthermore, the high-frequency cable 22 allows the hand-held portion 24 to be oriented in any direction, making it very easy to perform the work even in a narrow space such as the inside of the machine room 12 of the refrigerator 10. Since it is configured in a letter shape, it is very easy to bring the pipes 38 and 40 close to each other. Therefore, its working efficiency increases.
なお、上記実施例では、パイプ４０の先端部は、拡管と
したが、これに代えて、第９図に示すように、通常のパ
イプ１４０に縮管の挿入側パイプ３８を挿入しても、円
環状のロウ材は、挿入側パイプ３８の端部３８ａの基部
３８ｂとパイプ１４０の先端部１４０ｂとに挾まれてそ
の位置が完全に固定され、ロウ付けされる位置は常に同
じ位置となる。In the above embodiment, the tip of the pipe 40 is expanded, but instead of this, as shown in FIG. 9, even if a contracted insertion pipe 38 is inserted into the normal pipe 140, The annular brazing material is sandwiched between the base 38b of the end 38a of the insertion pipe 38 and the tip 140b of the pipe 140, and its position is completely fixed, so that the brazing material is always brazed at the same position.
［発明の効果〕
本発明の冷蔵庫等の機械室のパイプのロウ付け方法であ
ると、円環状のロウ材は、挿入側パイプの端部の基部と
非挿入側パイプの先端部とに挾まれて、その位置は完全
に固定されるため、ロウ付けされる位置は常に同じ位置
となる。[Effects of the Invention] In the method of brazing pipes in a machine room of a refrigerator or the like of the present invention, the annular brazing material is sandwiched between the base of the end of the inserted pipe and the tip of the non-inserted pipe. Since the position is completely fixed, the soldering position will always be the same.
また、円環状のロウ材の内径は、挿入側パイプの先端部
の外径より大きくてもロウ付けが可能なため、ロウ材を
圧入する必要がなく容易にロウ材を挿入側パイプにセッ
トできる。In addition, brazing can be performed even if the inner diameter of the annular brazing material is larger than the outer diameter of the tip of the insertion pipe, so there is no need to press fit the brazing material and the brazing material can be easily set into the insertion pipe. .
第１図は、本発明の一実施例を示す冷蔵庫と高周波ロウ
材は装置を示す斜視図、
第２図は、冷蔵庫の機械室の拡大図、
第３図は、挿入側パイプにロウ材を被せた状態を示す側
面図、
第４図は、挿入側パイプを拡管パイプへ差し込んだ状態
を示す賛断面図、
第５図は、パイプの接合部にワークコイルを当てた状態
の斜視図、
第６図は、接合したパイプの状態を示す縦断面図、
′ｍ７図は、手持ち部の底面図、
第８図は、手持ち部の側面図、
！＠９図は、挿入側パイプを通常のパイプに差し込んだ
状態を示す第２の実施例の側面図である。
〔符号の説明〕
１０・・・・・・冷蔵庫
１２・・・・・・機械室
１４・・・・・・圧縮機
１６・・・・・・サクションパイプ
１８・・・・・・高周波変換トランス
２０・・・・・・高周波加熱電源
２２・・・・・・高周波ケーブル
２４・・・・・・手持ち部
２６・・・・・・滑車
２８・・・・・・鎖
３０・・・・・・電極板
３２・・・・・・ワークコイル
３４・・・・・・ロウ材
３６・・・・・・支持板
３８・・・・・・挿入側パイプ
３８ｇ・・・挿入側パイプの端部
３８ｂ・・・挿入側パイプの端部の基部４０・・・・・
・非挿入側パイプー
４０ａ・・・非挿入側パイプの端部
４０ｂ・・・非挿入側パイプの先端部
第３図Fig. 1 is a perspective view showing a refrigerator and a high-frequency brazing device according to an embodiment of the present invention; Fig. 2 is an enlarged view of the machine room of the refrigerator; Fig. 4 is a side view showing the covered state; Fig. 4 is a cross-sectional view showing the state in which the insertion side pipe is inserted into the expansion pipe; Fig. 5 is a perspective view of the state in which the work coil is applied to the joint of the pipe; Figure 6 is a vertical cross-sectional view showing the state of the joined pipes, Figure 7 is a bottom view of the hand-held part, and Figure 8 is a side view of the hand-held part. Figure @9 is a side view of the second embodiment, showing a state in which the insertion side pipe is inserted into a normal pipe. [Explanation of symbols] 10... Refrigerator 12... Machine room 14... Compressor 16... Suction pipe 18... High frequency conversion transformer 20...High frequency heating power source 22...High frequency cable 24...Hand portion 26...Pulley 28...Chain 30... - Electrode plate 32... Work coil 34... Brazing material 36... Support plate 38... Insertion side pipe 38g... End of insertion side pipe 38b...Base 40 of the end of the insertion side pipe...
・Non-insertion side pipe 40a... End portion of the non-insertion side pipe 40b... Tip portion of the non-insertion side pipe Fig. 3
Claims (1)
付けによって接合する方法であって、一方の挿入側パイ
プの端部の径を絞って縮管を形成し、 挿入側パイプの端部に円環状のロウ材を嵌め込み、この
端部を他方の非挿入側パイプの端部に挿入し接続してロ
ウ材を固定後、 前記接続部分に加熱コイルを近接させ、加熱コイルに流
れる高周波誘導電流によりロウ材を加熱溶融することに
よりロウ付けした ことを特徴とする冷蔵庫等の機械室のパイプのロウ付け
方法。[Claims] 1. A method of joining pipes arranged inside a machine room of a refrigerator or the like by brazing, in which the diameter of the end of one of the insertion pipes is reduced to form a condensed pipe, Fitting an annular brazing material into the end of the insertion side pipe, inserting and connecting this end to the end of the other non-insertion side pipe to fix the brazing material, and then bringing a heating coil close to the connection part, A method for brazing pipes in machine rooms such as refrigerators, characterized in that brazing is performed by heating and melting a brazing material using a high-frequency induced current flowing through a heating coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30073790A JPH04172175A (en) | 1990-11-05 | 1990-11-05 | Method for brazing pipes in machine room of refrigerator or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30073790A JPH04172175A (en) | 1990-11-05 | 1990-11-05 | Method for brazing pipes in machine room of refrigerator or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04172175A true JPH04172175A (en) | 1992-06-19 |
Family
ID=17888499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30073790A Pending JPH04172175A (en) | 1990-11-05 | 1990-11-05 | Method for brazing pipes in machine room of refrigerator or the like |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04172175A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005092552A3 (en) * | 2004-03-15 | 2005-11-17 | Nexicor Llc | Portable induction heating tool for soldering pipes having a u-shaped head portion comprising an induction coil |
| JP2008508468A (en) * | 2004-08-05 | 2008-03-21 | アーヴィンメリトール エミッションズ テクノロジーズ ゲーエムベーハー | Exhaust gas system and method for coupling components of an exhaust gas system |
| JP2011179779A (en) * | 2010-03-03 | 2011-09-15 | Mitsubishi Electric Corp | Twisted tube type heat exchanger for water heater and heat pump type water heater including the same |
-
1990
- 1990-11-05 JP JP30073790A patent/JPH04172175A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005092552A3 (en) * | 2004-03-15 | 2005-11-17 | Nexicor Llc | Portable induction heating tool for soldering pipes having a u-shaped head portion comprising an induction coil |
| US7202450B2 (en) | 2004-03-15 | 2007-04-10 | Nexicor Llc | Induction coil design for portable induction heating tool |
| US7491916B1 (en) | 2004-03-15 | 2009-02-17 | Nexicor Llc | Induction coil design for portable induction heating tool and method for its use |
| JP2008508468A (en) * | 2004-08-05 | 2008-03-21 | アーヴィンメリトール エミッションズ テクノロジーズ ゲーエムベーハー | Exhaust gas system and method for coupling components of an exhaust gas system |
| JP2011179779A (en) * | 2010-03-03 | 2011-09-15 | Mitsubishi Electric Corp | Twisted tube type heat exchanger for water heater and heat pump type water heater including the same |
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