JPH0367789B2 - - Google Patents
Info
- Publication number
- JPH0367789B2 JPH0367789B2 JP63277040A JP27704088A JPH0367789B2 JP H0367789 B2 JPH0367789 B2 JP H0367789B2 JP 63277040 A JP63277040 A JP 63277040A JP 27704088 A JP27704088 A JP 27704088A JP H0367789 B2 JPH0367789 B2 JP H0367789B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- tapered
- insertion port
- press
- flat tube
- 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
- 238000003780 insertion Methods 0.000 claims description 29
- 230000037431 insertion Effects 0.000 claims description 29
- 238000005219 brazing Methods 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 238000005304 joining Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003507 refrigerant Substances 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
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
- F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
- F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
-
- 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
-
- 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
- F28F9/0256—Arrangements for coupling connectors with flow lines
Description
【発明の詳細な説明】
産業上の利用分野
この発明の継手部材への管接合方法に関し、さ
らに詳しくいえば、たとえばカーエアコン用エバ
ポレータ、コンデンサ等における熱交換管の先端
にヘツダ等を接合する方法に関する。[Detailed Description of the Invention] Industrial Application Field Regarding the method of joining pipes to a joint member of the present invention, more specifically, for example, a method of joining a header etc. to the tip of a heat exchange pipe in an evaporator for a car air conditioner, a condenser, etc. Regarding.
この明細書において、内外は、継手部材の管端
差込み口を基準とし、内とはその奥の方を指し、
外とはこれと反対側を指すものとする。すなわ
ち、内とは第２図および第３図左側を指し、外と
はこれと反対側を指すものとする。 In this specification, inside and outside refer to the pipe end insertion port of the joint member, and inside refers to the inner side,
Outside refers to the opposite side. That is, inside refers to the left side in FIGS. 2 and 3, and outside refers to the opposite side.
従来の技術
カーエアコン用コンデンサとして、第４図に示
すように、内部に複数の冷媒流通路２を有するア
ルミニウム製蛇行状偏平管１と、偏平管１の両端
に接続されたブロツク状ヘツダ３（継手部材）と
偏平管１の隣り合う直管部１ａどうしの間に配置
されたアルミニウム製コルゲートフイン４とから
なるものが知られている。従来、上記偏平管１の
両端へのヘツダ３の周壁に偏平管１の端部を圧入
しうる圧入口を形成しておき、偏平管１の端部を
上記圧入口に圧入し、これによりヘツダ３を偏平
管１に仮止めした状態で置きろう方式で行つてい
た。このような偏平管１へのヘツダ３の接合は、
偏平管１へのフインろう付と同時に行われてい
た。BACKGROUND ART As shown in FIG. 4, a condenser for a car air conditioner is made of an aluminum meandering flat tube 1 having a plurality of refrigerant flow passages 2 inside, and a block-shaped header 3 connected to both ends of the flat tube 1. A joint member is known which consists of an aluminum corrugated fin 4 disposed between adjacent straight pipe portions 1a of the flat pipe 1. Conventionally, a press inlet into which the end of the flat tube 1 can be press-fitted is formed in the circumferential wall of the header 3 to both ends of the flat tube 1, and the end of the flat tube 1 is press-fitted into the press inlet. 3 was temporarily attached to the flat tube 1 and then placed. The connection of the header 3 to the flat tube 1 is as follows:
This was done at the same time as the fin brazing to the flat tube 1.
発明が解決しようとする課題
しかしながら、従来の方法では、ヘツダ３の圧
入口の周面と、偏平管１端部入の圧入口内に圧入
された部分の外周面との間にはろう材は侵入せ
ず、したがつて、両者の接合は、偏平管１におけ
る圧入口外の部分の外周面と、ヘツダ３の周壁外
面における圧入口の周りの部分との間に形成され
たフイレツトにより行われることとなり、シール
性および接合強度が十分ではないという問題があ
つた。Problems to be Solved by the Invention However, in the conventional method, the brazing material enters between the circumferential surface of the press inlet of the header 3 and the outer circumferential surface of the portion press-fitted into the press inlet at the end of the flat tube 1. Therefore, the joining between the two is performed by a fillet formed between the outer circumferential surface of the portion of the flat tube 1 outside the injection port and the portion of the outer surface of the peripheral wall of the header 3 around the injection port. Therefore, there was a problem that the sealing performance and bonding strength were insufficient.
この発明の目的は、上記問題を解決した継手部
材への管接合方法を提供することにある。 An object of the present invention is to provide a method for joining pipes to a joint member that solves the above problems.
課題を解決するための手段
この発明による継手部材への管接合方法は、上
記の目的を達成するために、ブロツク状継手部材
に形成された管差込み口に管の端部を差込んだ状
態で置きろう方式により両者をろう付するにあた
り、管の先端に先細り状テーパ部を形成してお
き、他方、ブロツク状継手部材の管差込み口にお
ける奥行きの中間部から内方に管のテーパ部と同
じ角度のテーパ状の管端部圧入部を形成しておく
とともに、管差込み口における管端部圧入部より
も外方に、偏平管のテーパ部および管端部圧入部
のテーパ角度よりも大きなテーパ角度を有し、か
つ偏平管のテーパ部を管差込み口に差込んださい
にテーパ部外周面との間にろう溜め用隙間を確保
しうる拡大部を形成しておき、管のテーパ部を管
端部圧入部に圧入した状態で管のテーパ部におけ
る管差込み口の外側部分にろう材を嵌め被せ、ブ
ロツク状継手部材と管とをろう付することを特徴
とするものである。Means for Solving the Problems In order to achieve the above object, the method of joining a pipe to a joint member according to the present invention involves inserting the end of the pipe into a pipe insertion port formed in a block-shaped joint member. When brazing both parts using the brazing method, a tapered part is formed at the tip of the pipe, and a tapered part is formed inward from the middle part of the depth at the pipe insertion port of the block-shaped joint member to be the same as the tapered part of the pipe. In addition to forming a pipe end press-fit part with a tapered angle, a taper angle greater than the taper angle of the flat pipe taper part and the pipe end press-fit part is formed outward from the pipe end press-fit part at the pipe insertion port. An enlarged part is formed at an angle and can secure a gap for a wax reservoir between the tapered part and the outer peripheral surface of the tapered part when the tapered part of the flat pipe is inserted into the pipe insertion port. The block-shaped joint member and the pipe are brazed together by fitting and covering the outer part of the pipe insertion port in the tapered part of the pipe with the brazing material being press-fitted into the end press-fitting part.
作 用
この発明による継手部材への管接合方法は、管
の先端に先細り状テーパ部を形成しておき、他
方、ブロツク状継手部材の管差込み口における奥
行きの中間部から内方に管のテーパ部と同じ角度
のテーパ状の管端部圧入部を形成しておき、管の
テーパ部を管端部圧入部に圧入するものであるか
ら、管のテーパ部と管端部圧入部は面接触する。Function: In the method of joining a pipe to a joint member according to the present invention, a tapered portion is formed at the tip of the pipe, and the taper portion of the pipe is tapered inwardly from the intermediate depth of the pipe insertion port of the block-like joint member. A tapered pipe end press-fit part is formed at the same angle as the pipe end press-fit part, and the pipe end press-fit part is press-fitted into the pipe end press-fit part, so the pipe taper part and the pipe end press-fit part are in surface contact. do.
また、管差込み口における管端部圧入部により
も外方に、偏平管のテープ部および管端部圧入部
のテーパ角度よりも大きなテーパ角を有し、かつ
偏平管のテーパ部を管差込み口に差込んださいに
テーパ部外周面との間にろう溜め用隙間を確保し
うる拡大部を形成しておき、管のテーパ管を管端
部圧入部に圧入した状態で管差込み口の外側部分
にろう材を嵌め被せ、ブロツク状継手部材と管と
をろう付するものであるから、管とテーパ部にお
ける管差込み口外の部分の外周面と、ブロツク状
管継手の周壁外面における管差込み口の周りの部
分との間と、ろう溜め用隙間内とにフイレツトが
形成される。 In addition, it has a taper angle that is larger than the taper angle of the tape part of the flat tube and the press-fitted part of the tube end outward from the tube end press-fit part at the tube insertion port, and the tapered part of the flat tube is An enlarged part is formed between the outer peripheral surface of the tapered part and the outer peripheral surface of the pipe to ensure a gap for the solder reservoir. Since the block-shaped joint member and the pipe are brazed by fitting and covering the brazing material, the outer peripheral surface of the pipe and the part outside the pipe insertion port in the tapered part, and the pipe insertion port on the outer surface of the peripheral wall of the block-shaped pipe joint. Fillets are formed between the surrounding parts and within the solder reservoir gap.
実施例
以下、この発明の実施例を、第１図〜第３図を
参照して説明する。第１図〜第３図において、第
４図に示すものと同一物には同一符号を付して説
明を省略する。Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3. In FIGS. 1 to 3, the same parts as those shown in FIG. 4 are designated by the same reference numerals, and the explanation thereof will be omitted.
上記コンデンサを製造するにあたり、まず偏平
管１、ブロツク状ヘツダ３（ブロツク状継手部
材）およびコルゲートフイン４を用意する。そし
て、偏平管１の先端に先細り状テーパ部１１を形
成しておく。また、ヘツダ３の周壁には、管差込
み口１２を形成しておく。管差込み口１２におけ
る内側略半分の部分には、偏平管１のテーパ部１
１が圧入される同じ角度のテーパ状の管端部圧入
部１３を形成しておく。また、管差込み口１２に
おける管端部圧入部１３よりも外方に、偏平管１
のテーパ部１１および管端圧入部１３のテーパ角
度よりも大きなテーパ角度を有し、かつ偏平管１
のテーパ部１１を管差込み口１２に差込んださい
にテーパ部１１外周面との間にろう溜め用〓間１
５を確保しうる拡大部１４を形成しておく。そし
て、偏平管１のテーパ部１１を管差込み口１２の
管端部圧入部１３内に圧入する。このとき、偏平
管１のテーパ部１１の一部は、管差込み口１２の
外方にある。また、偏平管１のテーパ部１１外周
面と差込み口１２の拡大部１４との間にろう溜め
用〓間１５が形成されている。ついで、横長の切
欠き１７を有する板状のろう材１６を用意し、偏
平管１のテーパ部１１における差込み口１２の外
側部分に、ろう材１６を嵌め被せる。 In manufacturing the above-mentioned capacitor, first, a flat tube 1, a block-shaped header 3 (block-shaped joint member), and a corrugated fin 4 are prepared. Then, a tapered portion 11 is formed at the tip of the flat tube 1. Further, a pipe insertion port 12 is formed in the peripheral wall of the header 3. Approximately half of the inner side of the tube insertion port 12 has a tapered portion 1 of the flat tube 1.
A tapered tube end press-fitting part 13 having the same angle as that in which the pipe 1 is press-fitted is formed in advance. In addition, the flat tube 1
has a larger taper angle than the taper angle of the tapered part 11 and the pipe end press-fit part 13, and the flat pipe 1
When inserting the tapered part 11 into the pipe insertion port 12, there is a gap 1 between the outer peripheral surface of the tapered part 11 and the
5 is formed in advance. Then, the tapered part 11 of the flat tube 1 is press-fitted into the tube end press-fitting part 13 of the tube insertion port 12. At this time, a part of the tapered portion 11 of the flat tube 1 is located outside the tube insertion port 12. Further, a wax reservoir gap 15 is formed between the outer peripheral surface of the tapered portion 11 of the flat tube 1 and the enlarged portion 14 of the insertion port 12. Next, a plate-shaped brazing material 16 having a horizontally long notch 17 is prepared, and the brazing material 16 is fitted onto the outer side of the insertion port 12 in the tapered portion 11 of the flat tube 1 .
また、偏平管１の隣り合う直管部１ａどうしの
間にコルゲートフインをセツトしておく。 Further, corrugated fins are set between adjacent straight pipe portions 1a of the flat pipe 1.
このような状態で、これらを炉中に入れ、真空
雰囲気または不活性ガス雰囲気で、偏平管１とヘ
ツダ３および偏平管１とコルゲートフイン４とを
一括してろう付する。そうすると、偏平管１のテ
ーパ部１１における管差込み口１２外の部分の外
周面と、ブロツク状ヘツダ３の周壁外面における
管差込み口１２の周りの部分との間の他に、ろう
溜め用〓間１５内にもフイレツト１８が形成され
ており、偏平管１とヘツダ３とが強固にろう付さ
れる。 In this state, these are placed in a furnace and the flat tube 1 and the header 3 and the flat tube 1 and the corrugated fin 4 are brazed together in a vacuum atmosphere or an inert gas atmosphere. In this case, in addition to the space between the outer peripheral surface of the tapered portion 11 of the flat tube 1 outside the pipe insertion port 12 and the portion around the pipe insertion port 12 on the outer surface of the peripheral wall of the block-shaped header 3, A fillet 18 is also formed in the fillet 15, and the flat tube 1 and the header 3 are firmly brazed together.
発明の効果
この発明の継手部材への管接合方法によれば、
管と先端のテーパ部は、管端部差込み口の奥の方
に存在する同じ角度のテーパ状管端部圧入部に圧
入されて両者が面接触するので、治具等を用いな
くても両者を安定状態に仮止めすることができ、
ろう付け作業が簡単確実になるし、ろう付けした
さい前記面接触部分を通つて管継手内にフイレツ
トが生じるということはないので、内部フイレツ
ト発生に起因する流体流れの障害などもない。Effects of the Invention According to the method of joining a pipe to a joint member of the present invention,
The tapered part of the pipe and the tip are press-fitted into the tapered pipe end press-fit part of the same angle that exists at the back of the pipe end insertion port, and the two come into surface contact, so you can easily connect them without using a jig or the like. can be temporarily fixed in a stable state,
The brazing operation becomes simple and reliable, and since no fillet is generated in the pipe joint through the surface contact portion during brazing, there is no problem with fluid flow caused by internal fillets.
また、管のテーパ部における管差込み口外の部
分の外周面と、ブロツク状管継手の周壁外面にお
ける管差込み口の周りの部分との間と、ろう溜め
用隙間内とにフイレツトが形成されるから、ブロ
ツク状継手部材と管との間のシール性およびろう
付強度が、従来法により接合されたものに比べて
向上する。 In addition, a fillet is formed between the outer circumferential surface of the tapered portion of the pipe outside the pipe insertion port and the portion around the pipe insertion port on the outer surface of the peripheral wall of the block-shaped pipe joint, and within the gap for the solder reservoir. The sealing performance and brazing strength between the block-shaped joint member and the pipe are improved compared to those joined by conventional methods.
第１図はコンデンサにおける蛇行状偏平管をヘ
ツダに接合する方法を示す分解斜視図、第２図は
同じく蛇行状偏平管の端部をヘツダの管端部差込
み口に差込んで仮止めした状態を示す拡大断面
図、第３図は同じくろう付の後の状態を示す拡大
断面図、第４図はこの発明の方法によつて偏平管
がヘツダに接合されたカーエアコン用コンデンサ
の斜視図である。
１……偏平管、３……ヘツダ（継手部材）、１
１……テーパ部、１２……管差込み口、１３……
管端部圧入部、１４……拡大部、１５……ろう溜
め用〓間、１６……ろう材。
Figure 1 is an exploded perspective view showing how to join a meandering flat tube to a header in a capacitor, and Figure 2 shows a state in which the end of the meandering flat tube is inserted into the header's tube end insertion port and temporarily secured. 3 is an enlarged sectional view showing the state after brazing, and FIG. 4 is a perspective view of a car air conditioner capacitor in which a flat tube is joined to a header by the method of the present invention. be. 1... Flat tube, 3... Header (coupling member), 1
1...Tapered part, 12...Pipe insertion port, 13...
Pipe end press-fitting part, 14... Enlarged part, 15... Braze reservoir gap, 16... Brazing metal.
Claims (1)
に管の端部を差込んだ状態で置きろう方式により
両者をろう付するにあたり、管１の先端に先細り
状テーパ部１１を形成しておき、他方、ブロツク
状継手部材３の管差込み口１２における奥行きの
中間部から内方に管１のテーパ部１１と同じ角度
のテーパ状の管端部圧入部１３を形成しておくと
ともに、管差込み口１２における管端部圧入部１
３よりも外方に、偏平管１のテーパ部１１および
管端部圧入部１３のテーパ角度よりも大きなテー
パ角度を有し、かつ偏平管１のテーパ部１１を管
差込み口１２に差込んださいにテーパ部１１外周
面との間にろう溜め用〓間１５を確保しうる拡大
部１４を形成しておき、管１のテーパ部１１を管
端部圧入部１３に圧入した状態で管１のテーパ部
１１における管差込み口１２の外側部分にろう材
１６を嵌め被せ、ブロツク状継手部材３と管１と
をろう付することが特徴とする継手部材への管接
合方法。1. When brazing the two parts by inserting the end of the pipe into the pipe insertion port formed in the block-shaped joint member and brazing them together, a tapered part 11 is formed at the tip of the pipe 1, On the other hand, a tapered pipe end press-fit part 13 having the same angle as the tapered part 11 of the pipe 1 is formed inwardly from the intermediate depth of the pipe insertion port 12 of the block-shaped joint member 3, and the pipe insertion port Pipe end press-fitting part 1 in 12
3, and has a taper angle larger than the taper angle of the tapered part 11 of the flat tube 1 and the pipe end press-fit part 13, and when the tapered part 11 of the flat tube 1 is inserted into the pipe insertion port 12. An enlarged part 14 capable of securing a solder reservoir gap 15 is formed between the outer peripheral surface of the tapered part 11 and the pipe 1 with the tapered part 11 of the pipe 1 press-fitted into the pipe end press-fit part 13. A method for joining a pipe to a joint member, characterized in that a brazing material 16 is fitted over the outer part of a pipe insertion port 12 in a tapered portion 11, and the block-shaped joint member 3 and the pipe 1 are brazed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27704088A JPH02121770A (en) | 1988-10-31 | 1988-10-31 | Method for joining pipe to joining member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27704088A JPH02121770A (en) | 1988-10-31 | 1988-10-31 | Method for joining pipe to joining member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02121770A JPH02121770A (en) | 1990-05-09 |
| JPH0367789B2 true JPH0367789B2 (en) | 1991-10-24 |
Family
ID=17577946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27704088A Granted JPH02121770A (en) | 1988-10-31 | 1988-10-31 | Method for joining pipe to joining member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02121770A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH079122A (en) * | 1993-06-28 | 1995-01-13 | Kokumei Ko | Method and part for locating filling metal previously in argon welding |
| JP2004286280A (en) * | 2003-03-20 | 2004-10-14 | Denso Corp | Heat exchanger |
| KR100608577B1 (en) * | 2005-09-13 | 2006-08-03 | 주식회사 두원공조 | Header of heat exchanger for vehicle |
| JP5467039B2 (en) * | 2010-12-27 | 2014-04-09 | リンナイ株式会社 | Latent heat exchanger and hot water supply device |
| CN103212946B (en) * | 2013-04-13 | 2015-05-13 | 江苏华冶科技有限公司 | Machining method of gas radiation pipe |
| ES2606960T3 (en) * | 2014-02-20 | 2017-03-28 | Valeo Vymeniky Tepla K.S. | Connection device, and corresponding heat exchanger, particularly for a motor vehicle |
| JP7225683B2 (en) * | 2018-01-18 | 2023-02-21 | 株式会社デンソー | Heat exchanger and temporary fixing method |
| WO2019142500A1 (en) * | 2018-01-18 | 2019-07-25 | 株式会社デンソー | Temporary fixing structure, heat exchanger provided with same, and temporary fixing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50145363A (en) * | 1974-05-15 | 1975-11-21 | ||
| JPS512021A (en) * | 1974-06-24 | 1976-01-09 | Hitachi Ltd | Ikeiananyoru paipuno anteikoteiho |
-
1988
- 1988-10-31 JP JP27704088A patent/JPH02121770A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50145363A (en) * | 1974-05-15 | 1975-11-21 | ||
| JPS512021A (en) * | 1974-06-24 | 1976-01-09 | Hitachi Ltd | Ikeiananyoru paipuno anteikoteiho |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02121770A (en) | 1990-05-09 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |