JPS63134286U

JPS63134286U -

Info

Publication number: JPS63134286U
Application number: JP2101787U
Authority: JP
Priority date: 1987-02-16
Filing date: 1987-02-16
Publication date: 1988-09-02

Description

[Brief explanation of the drawing]

第１図は本考案の熱交換器の要部を示す縦断面
組立説明図、第２図は同熱交換器の要部縦断面図
、第３図はそのろう付け前の状態を示す縦断面拡
大図、第４図は同ろう付け後の状態を示すもの、
第５図は従来型熱交換器の要部縦断面図、第６図
は第５図の―線断面図。１……ヘツダープレート、２……チユーブ孔、
３……チユーブ、４……フイン、５……ろう材、
６……ろう付け部、７……ろう溜り。 Fig. 1 is a longitudinal cross-sectional assembly diagram showing the main parts of the heat exchanger of the present invention, Fig. 2 is a longitudinal cross-sectional view of the main parts of the heat exchanger, and Fig. 3 is a longitudinal cross-section showing the state before brazing. The enlarged view, Figure 4, shows the state after brazing.
FIG. 5 is a vertical sectional view of the main part of a conventional heat exchanger, and FIG. 6 is a sectional view taken along the line -- in FIG. 1... Header plate, 2... Tube hole,
3...tube, 4...fin, 5...brazing metal,
6...brazing part, 7...wax pool.

Claims

[Scope of utility model registration request]

a pair of header plates 1 spaced apart from each other;
A plurality of tubes 3 whose both ends are liquid-tightly fixed to the tube holes 2 of both plates 1, and each tube 2
In a heat exchanger equipped with a plurality of fins 4 which are brazed and fixed in contact with the outer surface of the tube, the thickness of the plate 1 is made thicker than that of the tube 3, and a plurality of fins 4 are provided on the inner and outer surfaces of each of the tubes. The brazing material 5 is coated in advance, the hole edge of the tube hole 2 is burred to protrude toward the fin 4 side, both ends of the tube 3 are expanded, and the tube hole 2 is formed in the expanded portion. 1. A heat exchanger characterized in that the protruding parts of the above are fitted and the brazing filler metals are melted in a furnace, thereby integrally brazing and fixing the fitting parts and the contact parts.