JPS62204188U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本チユーブ接合部の要部縦断面図であ
つて第２図の―矢視図、第２図は本チユーブ
接合部が適用される一例を示す熱交換器の全体図
、第３図はチユーブ３の要部斜視略図、第４図は
同他の実施例におけるチユーブ３の要部斜視略図
、第５図は従来型チユーブ接合部を示す縦断面略
図。 １…チユーブプレート、２…孔、３…チユーブ
、４…凸条、５…フイン、６…ろう材、７…タン
ク本体。 Fig. 1 is a vertical cross-sectional view of the main part of this tube joint, and is a view taken along the - arrow in Fig. 2; Fig. 2 is an overall view of a heat exchanger showing an example to which this tube joint is applied; The figure is a schematic perspective view of the main part of the tube 3, FIG. 4 is a schematic perspective view of the main part of the tube 3 in another embodiment, and FIG. 5 is a schematic vertical cross-sectional view showing a conventional tube joint. DESCRIPTION OF SYMBOLS 1...tube plate, 2...hole, 3...tube, 4...projection, 5...fin, 6...brazing material, 7...tank body.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 互いに平行に離間した一対のチユーブプレート
１，１に夫々穿設された複数の孔２に、それぞれ
チユーブ３の両端部が挿通されてろう付け固定さ
れる熱交換器のチユーブ接合部において、前記孔
２の孔縁部を該チユーブプレートの内面側にわず
かに立ち上げ形成し、前記チユーブ３の端部外周
でその先端より少し中央寄りに、環状の凸条４を
拡開形成し、該凸条４を前記孔２の前記立ち上げ
部の折り曲げ曲面に当接してその接触部をろう付
け固定したことを特徴とする熱交換器のチユーブ
接合部。 At a tube joint of a heat exchanger, both ends of tubes 3 are inserted into a plurality of holes 2 respectively bored in a pair of tube plates 1, 1 spaced parallel to each other and fixed by brazing. The edge of the hole 2 is slightly raised on the inner surface of the tube plate, and an annular protrusion 4 is formed on the outer periphery of the end of the tube 3 slightly closer to the center than the tip. 4 is brought into contact with the bent curved surface of the raised portion of the hole 2, and the contact portion is fixed by brazing.