JPH0248269U

JPH0248269U -

Info

Publication number: JPH0248269U
Application number: JP9317688U
Authority: JP
Priority date: 1988-07-14
Filing date: 1988-07-14
Publication date: 1990-04-03

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例を示す断面斜視図
、第２図は第１図の―線断面における要部拡
大図、第３図は第１図及び第２図に示すろう付用
パイプをヘツダーパイプとして用いた熱交換器の
正面図、第４図は同じく平面図、第５図は第３図
の―線断面図、第６図はヘツダーパイプとチ
ユーブとコルゲートフインとを分離して示す斜視
図、第７図はヘツダーパイプと蓋片とを分離して
示す斜視図、第８図は第３図の―線断面図、
第９図〜第１６図は第１図に示したヘツダーパイ
プの製造工程を説明するための図で、第９図は材
料としてのブレージングシートの断面斜視図、第
１０図は第９図の―線断面図、第１１図は切
欠き形成後の断面斜視図、第１２図はブレージン
グシートの両側縁に段部及び折曲げ部を形成した
後の断面図、第１３図は膨出部形成後の断面斜視
図、第１４図はチユーブ挿入孔の穿孔後の断面斜
視図、第１５図はチユーブ挿入孔の面取り後の側
面図、第１６図は断面Ｕ字状に成形した後の断面
斜視図、第１７図は他のろう付用パイプをヘツダ
ーパイプとして用いた熱交換器の斜視図、第１８
図は第１７図のヘツダーパイプの近傍をヘツダー
パイプとチユーブとを分離して示す斜視図、第１
９図は第１８図に示すヘツダーパイプの拡大斜視
図、第２０図はその製作工程におけるチユーブ挿
入孔穿設後のブレージングシートの断面斜視図で
ある。３，３′，４，４′…ヘツダーパイプ（ろう付
用パイプ）、３０…ブレージングシート、３０ａ
…心材、３０ｂ…ろう材層、３１…衝き合わせ部
、４０，４０′…折曲げ部、４１，４１′…折返
し部、４２，４２′…段部、４３，４３′…折曲
げ部。 Fig. 1 is a cross-sectional perspective view showing an embodiment of this invention, Fig. 2 is an enlarged view of the main part taken along the line - in Fig. 1, and Fig. 3 is the brazing pipe shown in Figs. 1 and 2. 4 is a plan view, FIG. 5 is a sectional view taken along the line -- in FIG. 3, and FIG. 6 is a perspective view showing the header pipe, tube, and corrugated fin separated. Figure 7 is a perspective view showing the header pipe and lid piece separated, Figure 8 is a sectional view taken along the line - - of Figure 3,
Figures 9 to 16 are diagrams for explaining the manufacturing process of the header pipe shown in Figure 1. Figure 9 is a cross-sectional perspective view of a brazing sheet as a material, and Figure 10 is a line taken along the line shown in Figure 9. 11 is a cross-sectional perspective view after notches have been formed, FIG. 12 is a sectional view after forming step portions and bent portions on both side edges of the brazing sheet, and FIG. 13 is a cross-sectional view after forming bulges. 14 is a sectional perspective view after drilling the tube insertion hole; FIG. 15 is a side view after the tube insertion hole is chamfered; FIG. 16 is a sectional perspective view after the tube insertion hole is formed into a U-shape; Fig. 17 is a perspective view of a heat exchanger using another brazing pipe as a header pipe, Fig. 18
The figure is a perspective view showing the vicinity of the header pipe in Figure 17 with the header pipe and tube separated;
FIG. 9 is an enlarged perspective view of the header pipe shown in FIG. 18, and FIG. 20 is a cross-sectional perspective view of the brazing sheet after the tube insertion hole is bored in the manufacturing process. 3, 3', 4, 4'... Header pipe (pipe for brazing), 30... Brazing sheet, 30a
...core material, 30b... brazing material layer, 31... abutting portion, 40, 40'... bent portion, 41, 41'... folded portion, 42, 42'... step portion, 43, 43'... bent portion.

Claims

[Scope of utility model registration request]

Of both edges of a brazing sheet having a brazing metal layer clad on at least one side of the core material, a step is formed on one side by a folded portion and a subsequent folded portion, and the other side is bent in the reaction direction. At the same time that the bent portion is formed, the brazing sheet is formed into a cylindrical shape by locking the bent portion of the other edge to the stepped portion of one edge so that both sides are brought into contact with each other. A pipe for brazing, which is characterized by: