JPH0379057U

JPH0379057U -

Info

Publication number: JPH0379057U
Application number: JP13721789U
Authority: JP
Priority date: 1989-11-27
Filing date: 1989-11-27
Publication date: 1991-08-12

Description

[Brief explanation of drawings]

第１図ないし第４図は本考案の一実施例を示し
、第１図は熱交換器の正面図、第２図はヘツダパ
イプを示す第３図中の−矢視断面図、第３図
は第２図中の矢視断面図、第４図は割合ａ／ｂと
通路抵抗△Ｐｒとの関係を示す図、第５図及び第
６図は従来例を示し、第５図はヘツパイプの縦断
面図、第６図はヘツダパイプの横断面図である。１０…熱交換器、１１…チユーブ、１３…ヘツ
ダパイプ、１４…挿入孔、１８…タンク、１８Ａ
…膨出部、１９…エンドプレート。 1 to 4 show an embodiment of the present invention, FIG. 1 is a front view of a heat exchanger, FIG. 2 is a sectional view taken along the - arrow in FIG. 3 showing a header pipe, and FIG. Fig. 4 is a diagram showing the relationship between the ratio a/b and the passage resistance △Pr, Fig. 5 and Fig. 6 show the conventional example, and Fig. 5 is a longitudinal cross-section of the hetsupipe. The top view and FIG. 6 are cross-sectional views of the header pipe. 10... Heat exchanger, 11... Tube, 13... Header pipe, 14... Insertion hole, 18... Tank, 18A
...bulge, 19... end plate.

Claims

[Claims for Utility Model Registration] A parallel flow type heat exchanger in which a header pipe is divided into a tank and an end plate in the tube insertion direction, and the end plate has an insertion hole for inserting the tube, which faces the tube insertion part. The tank wall is formed into a bulge that bulges outward in a dome shape, and a distance a from the tip of the tube in the header pipe to the inner surface of the bulge, and a distance b from the tip of the tube to the inner surface of the header pipe that is not the bulge. The ratio a/
b is 1.3 or less, and the ratio b/c of the distance b from the tip of the tube to the inner surface of the header pipe that is not a bulge and the inner diameter c of the header pipe where the bulge is present is 0.5 to 0.7. A heat exchanger comprising: