Heat exchanger and method of making heat exchangers
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United States of America Patent
Stats
-
Sep 19, 1989
Grant Date -
N/A
app pub date -
Mar 10, 1987
filing date -
Apr 28, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A heat exchanger comprises at least one group of tubes of thermoplastic synthetic material, the tube ends of a group being packed closely together and the tube ends of adjacent tubes being fused to one another on their end face. Preferably, the tube ends are arranged in a sleeve enclosing the group of tubes, the external tube ends being fused with the sleeve. The heat exchangers are made in such a way that the tube ends are assembled together and inserted into a sleeve. The tubes are placed in vertical position, with their ends essentially upward. Heat is then supplied to the tube ends from above, causing the tube ends to expand and occasionally to fuse with the sleeve.
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