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(11) | EP 0 097 612 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Heat exchanger |
(57) A heat exchanger comprising a flat pipe for allowing a heat exchange medium to pass
therethrough, flat surfaces of the flat pipe being confronted with each other at an
interval and being disposed in parallel, and fins formed by corrugating a strip metal
plate, the fins being arranged between the confronted flat surfaces and along their
lengthwise direction, characterized in that the strip metal plate is modified structurally
in a new manner whereby yield of a fin material, rigidity of the fins and performance
of heat transfer are improved, and occurrence of reject articles is reduced. |