JPH0228981U

JPH0228981U -

Info

Publication number: JPH0228981U
Application number: JP1988106784U
Authority: JP
Priority date: 1988-08-12
Filing date: 1988-08-12
Publication date: 1990-02-23

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る熱交換器の扁
平管を示す要部斜視図、第２図は第１図の―
線に沿う断面図、第３図は本考案の他の実施例に
係る熱交換器の扁平管を示す要部斜視図、第４図
は第３図の―線に沿う断面図、第５図は本考
案の更に他の実施例に係る扁平管を示す縦断面図
、第６〜９図は本考案の熱交換器の実験結果を示
すグラフ、第１０〜１３図は本考案の更に他の実
施例を示す要部斜視図及び断面図、第１４〜１６
図は従来の熱交換器を示す斜視図及び断面図であ
る。１，２…ヘツダパイプ、３…入口管、４…出口
管、５…扁平管、５ａ，５ｂ…半扁平管、２０ａ
，２０ｂ…デインプル、２１ａ，２１ｂ…頂部、
Ｐ…デインプルのピツチ、ｔ…管内部の厚さ。 FIG. 1 is a perspective view of the main parts of a flat tube of a heat exchanger according to an embodiment of the present invention, and FIG.
3 is a perspective view of essential parts showing a flat tube of a heat exchanger according to another embodiment of the present invention; FIG. 4 is a sectional view taken along line - in FIG. 3; FIG. 5 Figures 6 to 9 are graphs showing experimental results of the heat exchanger of the present invention, and Figures 10 to 13 are longitudinal cross-sectional views showing flat tubes according to still other embodiments of the present invention. Main part perspective view and sectional view showing the embodiment, Nos. 14 to 16
The figures are a perspective view and a sectional view showing a conventional heat exchanger. 1, 2...Header pipe, 3...Inlet pipe, 4...Outlet pipe, 5...Flat tube, 5a, 5b...Semi-flat tube, 20a
, 20b... dimple, 21a, 21b... top,
P... Pitch of dimples, T... Thickness inside the tube.

Claims

[Claims for Utility Model Registration] 1. A header pipe 1 to which an inlet pipe 3 into which the fluid to be heat exchanged flows is attached, and a header pipe 2 to which an outlet pipe 4 to which the fluid to be heat exchanged flows out is attached are separated by a predetermined length. In a multi-flow type heat exchanger in which both the header pipes 1 and 2 are connected in parallel with each other through a large number of flat tubes 5, the one flat tube 5 is connected to two semi-flat tubes 5a and 5b.
The semi-flat tubes 5a, 5b are each provided with a plurality of dimples 20a, 20b that protrude in opposition to each other so as to partially partition the flow path within the flat tube 5. A multi-flow type heat exchanger characterized in that the tops 21a and 21b of the dimples 20a and 20b of the two semi-flat tubes 5a and 5b are joined to each other. 2. The multi-flow type heat exchanger according to claim 1, wherein the dimples 20a and 20b are formed at a pitch P of 2 to 4 mm with respect to the normal direction of the axis of the flat tube 5. 3 The flat tube 5 has an inner thickness t of 0.5 to 0.5.
The multi-flow type heat exchanger according to claim 1 or 2, characterized in that the thickness is 1.7 mm.