Appeal No. 2000-1917
Application 09/076,863
The invention relates to “a heat exchanger employed for
exchanging heat between two fluids, for example, one fluid,
that
is a strong acidic or a strong alkaline medical fluid employed
in an Integrated Circuit production line (i.e., IC production
line) inside a clean room ... and another fluid, that is a
heat transfer medium” (specification, page 1). Representative
claim 1 reads as follows:
1. A fluororesin heat exchanger employed in a clean room
for an IC circuit producing line, comprising:
a plurality of resin tubes for mutually exchanging heat
between a fluid flowing through an inside of the heat
exchanger and a fluid flowing through an outside thereof; and
a holding plate having plural independent tube holding
holes,
wherein: said plural resin tubes have ends respectively
arranged at said plural independent tube holding holes of said
holding plate, a longitudinally predetermined length of said
resin tube from each end of said plural resin tubes being
integrally fused into said holding plate; said holding plate
has ring-spaces for emitting heat, respectively located around
a periphery of each resin tube, except a fusing portion for
fusing each end of said resin tubes into said holding plate; a
diameter of each tube holding hole is almost the same as an
external diameter of the end of each resin tube; and an outer
end face of said holding plate and an end face of said resin
tube having each end arranged at the tube holding hole at the
same level.
THE PRIOR ART
The items relied on by the examiner as evidence of
obviousness are:
2
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