Permanently joined plate heat exchanger
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United States of America Patent
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-
May 3, 1994
Grant Date -
N/A
app pub date -
Aug 5, 1992
filing date -
Feb 28, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a plate heat exchanger each one of a stack of plate elements consists of two heat transfer plates which define between themselves a flow space for a heat exchange fluid and which are permanently joined together, for instance by brazing, around their edges and at several places distributed over the heat transfer portions of the plates. Each heat transfer plate has protuberances and depressions formed by pressing in its heat transfer portion and has port portions with at least four through flow openings. Adjacent plate elements are permanently joined together, for instance by brazing, only around each of the through flow openings. The stack of plate elements is held together by members extending through said through flow openings.
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