Laminated type heat exchanger

Details Laminated type heat exchanger Laminated type heat exchanger

1996-12-12

1998-10-27

Leo, Leonard R.

Heat exchange

Radiator core type

Deformed sheet forms passages between side-by-side tube means

165 70, 165176, 165178, F28D 103

Patent

active

058266488

ABSTRACT:
A laminated type heat exchanger according to the present invention includes a plurality of metal plates laminated with each other to form a fluid passage and an end plate disposed at an end of the laminated metal plates. The end plate has two protrusions for forming a fluid inlet passage and a fluid outlet passage for the fluid passage, respectively, and a joining portion formed between the two protrusions, for being brazed to the most-sided metal plate. A through hole is formed at the center of the joining portion. Even if there is a defective brazed portion in the joining portion, fluid which flows from the fluid inlet directly into the outlet passages through the defective brazed portion always leaks to the outside from the through hole. As a result, an internal leakage between the fluid inlet and outlet passages can be detected securely.

REFERENCES:
patent: 5042577 (1991-08-01), Suzumura
patent: 5178207 (1993-01-01), Bergqvist et al.
patent: 5417280 (1995-05-01), Hayashi et al.
patent: 5511611 (1996-04-01), Nishishita
patent: 5544702 (1996-08-01), Nishishita

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