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a t e n t e d J u l y ‘ , 193
a t t e s t s
t o
e sus rmw
. l l o h n l 0 . i s l e y , New Haven, Conn, assior t o
C o o l - ‘ R i t e Products l ? o r p o r a t i o n ,
New
a v e n ,
C on n ,
a c o r p o r a t i o n o f melaware
poo
A p p l i c a t i o n . ‘ l a n u a r y d ,
1 9 3 4 , S e r i a l
No. t ® 5 ? l l l 2
_
d l U l a i l m s .
The p r e s e n t i n v e n t i o n has
r e l a t i o n t o c o o l i n g
or
r e f r i g e r a t i n g systems o f
a
common type
em
ploying apparatus
comprising
a compressor or
pump which i s under c o n t r o l o f s u i t a b l e
means,
5 such f o r
example
as
a n expansion v a l v e , f o r f o r c
i n g c i r c u l a t i o n
o f
t h e r e f r i g e r a n t contained i n
a c o i l l o c a t e d within
t h e
c o o l i n g
chamber through
which c i r c u l a t i o n
o f
a i r
i s induced
by
means o f
a motor
dri v e n
f a n .
A c o o l i n g system a s above
g e n e r a l l y r e f e r r e d
t o
i s
employed
with
a r e f r i g e r a t o r
used
f o r
the
p r e s e r v a t i o n o f
food products
or i n
other
i n
s t a n c e s
when
i t i s d e s i r a b l e
t o
maintain
a g i v e n
d e g r e e
o f
humidity i n
the
a i r a n d t h e main
o b j e c t
1 5 o f th i s
i n v e n t i o n
i s t o
p r o v i d e improved
means
whereby t h e r e q u i r e d r e l a t i v e d e g r e e o f h
u m i d i t y
c a n be
maintained a t
d i f f e r e n t
temperatures o f
the
a i r .
In
p r a c t i c a l l y
a l l systems
where a c o o l i n g c o i l
2 0
i s employed
t h e s u r f a c e
o f
r a d i a t i o n t h e r e o f i s
i n c r e a s e d
by
?ns i n t h e form o f p l a t e s threaded
on
the c o i l .
According
t o the p r e s e n t i n v e n t i o n the
?ns
are
employed
t o a l s o r e g u l a t e or g i v e ‘ the c o r r e c t
2 5 d e g r e e o f
r e l a t i v e
humidity when
the system
i s
i n use f o r
the
preservation
o r c o o l i n g
o f
food
products.
I t i s understood
t h a t
i n the
r e f r i g e r a t i o n o f
f o o d , a t d i f f e r e n t temperatures, more
or
e s s
mois
3 0 t u r e i n t h e food i s caused
t o
evaporate thereby
t h e f o o d may become u n d e s i r a b l y d r i e d
because
the moisture
so
evaporated
passes
away.
With
the
improved
means n ow
introduced
the moisture
i s
condensed,
c o l l e c t e d
a n d r e t a i n e d on s a i d
?ns
i n
the
tormlof drops o r
p a r t i c l e s
on
substan
t i a l l y
t h e
e n t i r e s u r f a c e o f both s i d e s o f
t h e ?ns
t h e r e b y
h o l d i n g t h e
condensed
m o i s t u r e i n s u s
pended p o s i t i o n and
m a t e r i a l l y
i n c r e a s i n g
t h e
area o f evaporation.
An embodiment o f
the
invention a s applied t o
a
c o o l i n g o r r e f r i g e r a t i n g system i s more f u
l l y
described h e r e i n a f t e r with reference t o
the
ac
companying
drawing
wherein
Figure
1 i s a
s i d e e l e v a t i o n showing the a r
rangement o f t h e
apparatus
o f
a
c o o l i n g
system
for which the invention i s applicable;
Figure
2
i s a f r o n t e l e v a t i o n
o f
the same a p
p a r a t u s ;
50 Figure
3
i s a s e c t i o n a l view taken on l i n e 3 4
V o f Figure 4 looking i n the d i r e c t i o n o f the i n d
i
c a t i n g a r r o w :
Figure
4 i s a
s i d e e l e v a t i o n
o f a
?n
or mois
10
35
t u r e c o l l e c t i n g and d i s t r i b u t i n g p l a t
e
w i t h
t h e ‘
5 5 tube supporting t he f i n shown i n
s e c t i o n ,
a n d
t i l l . Mew-W3)
Figure 5 i s a n enlarged
o r
exaggerated v e r t i c a l
section of
t h e ? n .
In
the embodiment shown in the
drawing r e
f e r r e d
t o the
invention i s a p p l i e d
t o
a c o o l i n g
system
of
a common type which r e q u i r e s
a
c o o l
ing chamber such a s
l enclosing
the c o i l 2 there
i n a n d a
drain
i i i s u s u a l l y provided t o
carry
o?
excess
moisture.
A
fan d
driven
by
a motor
5
i s
employed
t o
induce
c i r c u l a t i o n o f
a i r through
t h e c o o l i n g chamber.
The refrigerant
i s given a f o r c e d c i r c u l a t i o n
through the c o i l 2
a n d
conductor 6 by means
o f the
compressor
o r pump
i which
i s under
c o n t r o l o f the
t h e r m o s t a t i c
expansion v a l v e t i n
the
usual
way.
The
?ns
or plates
d
are threaded on the
tubes
oi
the c o i l
t
spaced
apart
and
as said ? ns
are
composed
o f comparatively
t h i n
s h e e t metal a
bearing
f o r
the f i n s i s
p r o v i d e d by drawing
out
the
s t o c k
around t h e c e n t r a l h o l e
t o
p r o v i d e t h e ‘ b o s s
i t a n d which b o s s
a l s o
may operate
a s
the spac
ing
means for the
?ns. The ?ns
are
formed with
a s e r i e s o f indenta tions preferably
square a n d
o
cated
on
both s i d e s
of
the ?ns. The purpose o f
the indentations
i s t o
provide
pockets or r e s e r
v o i r s on
the surfaces
o f .
the
?ns t o c o l l e c t
a n d
r e t a i n t h e
drops
o r p a r t i c l e s o f .
condensed mois
t u r e s e p a r a t e d during t h e d e f r o s t i n g c y c
l e
o f
t h e
c o i l
2 s o
that
the current o f a i r
from
the fan w i l l
blow
the moisture back
i n t o
the
a i r in
a ?nely
atomized
s t a t e . The edge o f
the i n d e n t a t i o n s
has
a tendency
to
hold
the
condensed moisture a n d
without
t h e s e
indentations
the drops
would run
t o g e t h e r and d r i p o f f t h e bottom e d g e o f t h e
f i n s
and p a s s aw ay through t h e d r a i n 3 . The p o c k e t
s
H ,
a s
s t a t e d h e r e i n b e f o r e , c o l l e c t the
condensed
moisture
which
s held suspended over
a
compar a
t i v e l y
l a r g e
s u r f a c e t h e r e b y m a t e r i a l l y i n c r e a s i
n g
the area o f evaporation. Furthermore, the sur
i ' a c e
o f the ?ns being broken by the p o c k e t s ,
a
t u r b u l e n c e i s c a u s e d i n t h e f o r c e d a i r
c u r r e n t
passing
over
the surface o i ’ the
?ns.
The improvement hereinbefore d e s c r i b e d pro
v i d e s
means
f o r
determinably maintaining the
r e q u i r e d
r e l a t i v e d e g r e e o f
humidity
under proper
c o n t r o l r e g a r d l e s s o f e x t e r n a l
atmospheric con
ditions.
I t w i l l
be
understood the
f i n s
may be
variably
spaced a p a r t , with the p o c k e t s o f a n y
s u i t a b l e
shape
a n d
located
on
one
s i d e o n l y ,
t h e r e f o r e
i t
i s to
be understood, such modi?cat ions or a n y
o t h e r s
coming
f a i r l y
within
the
terms o f
c l a i m s
hereunto appended s h a l l be c o v e r e d t h e r e b y .
I
claim:
1 .
In a system o f c o o l i n g or r e f r i g e r a t i o n ,
a
10
1 5
35
40
45
55
8/17/2019 J C Raisley Cooling System
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r e f r i g e r a t i n g c o i l ,
a
p l u r a l i t y o i ?ns r p i s t e s
hav
in g a
central
perforation with turnedein edges
10
forming
a
boss threaded on
said c o i l
a n d
saidr p i s t e s
h a v i n g
a
s e r i e s
o f
indentations
on
T o o t h
s i d e s t h e r e o f
a l t e r n a t e l y
wronged forming
p o c k e t s
adapted
f o r t h e c o l l e c t i o n a n d d i s t r l i i w
t i o n o f moisture.
2 . In
a
system
of cooling
or
r e f r i g e r a t i o n ,
efrigerating
c o i l ,
a .
p l u r a l i t y of ?ns or p l a t - e s
threaded on
said
c o i l
o n e a b o v e the
other
and said
?ns or p l a t e s
h a v i n g a , s e r i e s
o i indentations on
both s i d e s , s u r f a c e s t h e r e o i forming
p o c k e t s
adapted
f o r
the
c o l l e c t i o n
a n d
d i s t r i b u t i o n o i ’
moisture.
3 .
In a system of cooling or r e f r i g e r a t i o n , a
r e f r i g e r a t i n g c o i l ,
a
p l u r a l i t y
o f ?ns
or p i s t e s
threaded
one above
the other on said
c o i l , means
comprising a boss on each t i n
or
plate
for spacing
n o i s e l e s s
f i n s o r
p i s t e s apart a n d
s a i d ' f l n s o r
p l a t e s
having a s e r i e s o f s u b s t a n t i a l l y square
shaped
i n d e n t a t i o n s
on both s i d e s
t h e r e o f forming
p o c k e t s adapted
f o r
t h e c o l l e c t i o n
a n d
d i s t r i b u
t i o n o f moisture.
1 i . in combination
with a
system
o f
a n d
means
f o r c o o l i n g o r r e f r i g e r a t i o n comprising a r
e f r i g ~
erant
c o i l a n d a ion f o r causing forced ?ow f a i r ,
a plurality
of
?ns 1 ' plates threaded on
said
c o l l
one
a b o v e the other
to
form
a ro k e n
column and
spaced a p a r t from
a n
a d j a c e n t column by
b o s s e s
on said ? ns o r p l a t e s ,
said f i n s or
p l a t e s
h a v i n g
a
s e r i e s of indentations on both s i d e s
forming
p o c k e t s t o r e c e i v e a nd
suspend
c o l l e c t e d
m o i s t u r e
over an ex t e n d e d surface
to
increase the are a 1 5
o f evaporation under a c t i o n o f the c u r r e n t o f
air
from
said
f a n .
JOHN
C .
RAISLEY;
