[1981, Nov. 24] US4301860 Rotary Drum Heat Exchanger
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Transcript of [1981, Nov. 24] US4301860 Rotary Drum Heat Exchanger
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7/24/2019 [1981, Nov. 24] US4301860 Rotary Drum Heat Exchanger
1/6
United S t a t e s
Patent
[ 9
P o z z i
[ 5 4 ] ROTARY DRUM
HEAT
EXCHANGER
[ 7 5 ]
I n v e n t o r :
L e o p o l d o P o z z i ,
M i l a n ,
I t a l y
[ 7 3 ] A s s i g n e e : C o s t r u z i o n i M e c c a n i c h e L e o p o l d o
P o z z i
S . p . A . , I t a l y
[ 2 1 ] A p p l . N o . : 1 2 1 , 0 5 6
[ 2 2 ] F i l e d : F e b . 1 3 ,
1 9 8 0
[ 3 0 ]
F o r e i g n A p p l i c a t i o n P r i o r i t y D a t a
O c t .
1 5 ,
1979 [ I T ] I t a l y 26508 A/79
[ 5 1 ] I n t . C l . 3
. . . . . . . . . . . . . . . . . . . . . . . .
F28D 11/02;
FZSF 5/00
[ 5 2 ] US. l .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
165/90; 165/92
[ 5 8 ]
F i e l d o f
S e a r c h
1 6 5 / 9 0 ,
8 7 ,
8 9 ,
9 1 ,
1 6 5 / 8 8 , 9 2 , 9 3
[ 5 6 ] R e f e r e n c e s C i t e d
U . S . PATENT DOCUMENTS
1,030,203 6/1912 Paulsen . . . . . . . . . . . . . . . . . . . . 1 6 5/ 88
1 , 7 4 6 , 4 9 7 2 / 1 9 3 0 Q u e n s e l e t
a l .
1 6 5 / 9 2
3,800,865
4/
1974 Onarheirn e t a l .
. . . . . . . . . . . . . . . . . .
165/92
[ 1 1 ] 4 , 3 0 1 , 8 6 0
[ 4 5 ] N o v .
2 4 ,
1 9 8 1
FOREIGN
PATENT
DOCUMENTS
581817 12/1924
France . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165/90
P r i m a r y ExaminerSheldon . R i c h t e r
A t t o r n e y , A g e n t , o r F i r m 0 s t r o l e n k , F a b e r ,
Gerb
S o f f e n
[ 5 7 ] ABSTRACT
A
e a t e x c h a n g e r i s d i s c l o s e d , c o m p r i s i n g a s h e l l h o u s
i n g a r o t o r . The r o t o r comprises
a s e r i e s
of
hollow
b o d i e s whose i n t e r i o r s
a r e h y d r a u l i c a l l y
connected
t o
each
o t h e r
and which a r e secured t o a s h a f t which i s
r o t a t a b l y mounted i n
t h e s h e l l .
One l i q u i d f l o w s
t h r o u g h t h e s h e l l i n c o n t a c t w i t h t h e e x t e r i o r o f t h e
hollow b o d i e s . P a r t o f t h e s h a f t
i s
hollow t o p e r m i t
f l o w
t h r o u g h
t h e
s h a f t
and
t h e
hollow
b o d i e s o f a
s e c o n d
l i q u i d .
Diaphragms a r e d i s p o s e d
i n
t h e h o l l o w b o d i e s
t o
r e g u l a t e t h e f l o w o f ? u i d
t h e r e t h r o u g h .
The s h e l l
p r e f
e r a b l y
c o m p r i s e s
l a r g e
d i a m e t e r ? t t i n g s . The s e c o n d
l i q u i d
i s
p r e f e r a b l y
d e n s e
a n d
may c o m p r i s e s l u d g e ,
waste water,
e t c .
2 2
C l a i m s , 3 D r a w i n g F i g u r e s
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U.S. Patent N o v .
2 4 , 1 9 8 1
S h e e t o f 2
4,301,860
/ i
, 9 ?
4010 5266
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4 , 3 0 1 , 8 6 0
1
ROTARY
DRUM
HEAT EXCHANGER
BACKGROUND AND SUMMARYIOF
THE
INVENTION
T h i s
i n v e n t i o n
r e l a t e s t o
a
r o t a t i n g
drum
t y p e
h e a t
e x c h a n g e r .
The
o b j e c t o f t h e i n v e n t i o n i s
t o
p r o v i d e
a
h e a t exchanger a b l e
t o r e c o v e r
t h e r e s i d u a l h e a t i n
w a s t e ? u i d s o f
any
n a t u r e and o r i g i n , n p a r t i c u l a r
s l u d g e , w a s t e
w a t e r , e t c , c o n t a i n i n g
s o l i d s
i n s u s p e n *
s i o n , s u c h
a s d i s c h a r g e w a t e r s from c h e m i c a l p r o c e s s o r s
i n g e n e r a l , p a r t i c u l a r l y b l e a c h i n g
a n d
d y e i n g p l a n t s , e t c .
A
u r t h e r o b j e c t
o f
t h e i n v e n t i o n i s t o
p r o v i d e a h e a t
e x c h a n g e r o f
h i s t y p e
t h a t
p e r m i t s ,
u n d e r a n y
o p e r a t i n g
c o n d i t i o n s , a c o n t i n u o u s
and
e f f i c i e n t h e a t
exchange
between t h e
t w o
f l u i d s
a s
a f u n c t i o n
of e m p e r a t u r e ,
and
a l s o
p e r m i t s e a s y
a c c e s s i b i l i t y t o
t h e
d i f f e r e n t
p a r t s o f
t h e h e a t e x c h a n g e r i t s e l f e s p e c i a l l y t o t h e p a r t s
h a n
d l i n g
s l u d g e
a n d / o r w a s te w a t e r ) f o r p e r i o d i c
c l e a n i n g ,
m a i n t e n a n c e , e t c .
The
h e a t
exchanger a c c o r d i n g
t o t h i s i n v e n t i o n e m
b o d i e s a s h e l l p r o v i d e d w i t h ? t t i n g s f o r i n l e t and d i s
charge
o f t h e ? u i d s
t o
be t r e a t e d . At l e a s t one r o t o r i s
r o t a t a b l y
housed
i n s a i d
s h e l l
and c o n s i s t s
o f a s e r i e s o f
h o l l o w b o d i e s p r o v i d e d
w i t h
i n t e r n a l d i a p h r a g m s t o
r e g u l a t e t h e
f l o w o f
t h e o t h e r
l i q u i d
u n d e r t r e a t m e n t .
These hollow b o d i e s
a r e
connected h y d r a u l i c a l l y t o
e a c h
o t h e r
i n
s u c c e s s i o n , and t h e i r
e n d s
a r e
j o i n e d
w i t h
a d e q u a t e ? t t i n g s by means o f r o t a r y s e a l s i n o r d e r
t o
p e r m i t c i r c u l a t i o n i n c o u n t e r - c u r r e n t o f t h e o t h e r
l i q
u i d s under t r e a t m e n t i n t h e r o t o r .
I n one p r e f e r r e d embodiment o f t h e
h e a t
e x c h a n g e r s
o f
t h e
o f
t h e i n v e n t io n , t h e
s h e l l
w h i c h r o t a t a b l y
h o u s e s
a t l e a s t o n e r o t o r )
i s
p r o v i d e d w i t h
p e r f o r a t e d
s u p p o r t i n g
g u d g e o n s
a t
i t s
o p p o s i t e
e n d s .
The
u d g e o n s
connect t h e chambers o f
t h e
hollow b o d i e s w i t h t h e
e x t e r i o r ,
a n d
a r e h e l d by s u p p o r t s
c o n n e c t e d
movably
t o
t h e
s i d e
w a l l s
o f
t h e s h e l l .
The o p e n i n g s i n t h e
gud
g e o n s
a r e h y d r a u l i c a l l y
i n t e r c o n n e c t e d by means o f
t h e
s e a l i n g
d e v i c e s i n t h e
?xed
g u d g e o n s , which
a r e
i n
t u r n
f a s t e n e d t o a b a s e s t r u c t u r e by means of s u p p o r t s which
p e r m i t
c o n v e n i e n t r o t a t i o n o f t h e
r o t o r a n d c a p s i z i n
g
o f
t h e s h e l l f o r c l e a n i n g and m a i n t e n a n c e
o f
t h e
d i f f e r e n t
p a r t s
o f
t h e h e a t
e x c h a n g e r .
The i n v e n t i o n w i l l
now
e
d e s c r i b e d i n
d e t a i l
i n
c o n
j u n c t i o n w i t h t h e d r a w i n g s ,
w h i c h
i l l u s t r a t e b y
way
o f
e x a m p l e o n l y
o n e p r e f e r r e d
embodiment o f t h e
h e a t
e x c h a n g e r a c c o r d i n g t o t h e i n v e n t i o n ,
u s e d
m a i n l y
( b u t
n o t
e x c l u s i v e l y )
f o r
h e a t
recovery
from
waste
w a t e r s .
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 i s
a
f r o n t
view i n c r o s s s e c t i o n of
t h e
h e a t
e x c h a n g e r
o f
t h e
i n v e n t i o n .
FIG.
2
i s a view
o f
t h e end
o f
t h e h e a t
e x c h a n g e r o f
FIG. 1 .
FIG. 3 i s
a n
a x i a l c r o s s - s e c t i o n
o f t h e
r i g h t hand
end
o f t h e h e a t e x c h a n g e r shown
i n FIG.
1 .
DETAILED
DESCRIPTION
OF THE
PREFERRED EMBODIMENT
The
h e a t
e x c h a n g e r i l l u s t r a t e d
i n t h e
d r a w i n g s c o m
p r i s e s
a
S h e l l A, i n which one of
t h e
tw o
f l u i d s under
t r e a t m e n t
i s
c a u s e d
t o c i r c u l a t e .
The
s h e l l
A
o u s e s ,
r o t a t a b l y , one or m o re dru ms or
r o t o r s
B i n w hi ch a
second l i q u i d under t r e a t m e n t c i r c u l a t e s i n c o u n t e r - c u r
r e n t .
I n t h e d e p i c t e d
embodiments
s h e l l A n c l u d e s a s u b
s t a n t i a l l y
p a r a l l e l i p i p e d
s h a p e d
v e s s e l 1 0 , t h e o p p o s i t e
2 5
4 5
5 5
6 0
2
end
w a l l s
12 and 1 4 o f which
a r e
s u i t a b l y r e i n f o r c e d and
p r o v i d e d w i t h
r e s p e c t i v e
s u p p o r t s
1 6 a n d
1 8 i n
t h e i r
c e n t r a l
p a r t ,
w h i c h s u p p o r t s
p r o j e c t t o w a r d
t h e i n t e r i o r
o f t h e v e s s e l 1 0 i t s e l f . Each one
o f
s u p p o r t s
1 6
and
1 8
i s
o p e r a t i o n a l l y a s s o c i a t e d w i t h r o l l e r b e a r i n g s 2 0 ( s e e
F I G . 3 ) o f r o t a r y s e a l i n g
e l e m e n t s
2 2 f o r t u b u l a r g u d
g e o n s
2 4
a n d 2 6 p r o j e c t i n g l o n g i t u d i n a l l y o r
a x i a l l y
outward from end w a l l s 1 2 and 1 4 o f
t h e
v e s s e l
1 0 .
The
i n s i d e
e n d s
o f t h e gudgeons 2 4 a n d 2 6 t e r m i n a t e
w i t h
f l a n g e s
2 8
a n d 3 0 ,
s e c u r e d
t o
gudgeons 2 4
and
2 6
and
a l s o
t o t h e
w a l l s
1 2 and 1 4 o f v e s s e l 1 0 .
Moreover,
f l a n g e s 2 8
a n d 3 0
a r e
s u i t a b l y
p e r f o r a t e d
t o
r e c e i v e
screws
25
which secure s a i d s u p p o r t s 16 and 18
t o w a l l s
1 2 and 1 4 o f t h e v e s s e l 1 0 . The e n d s o f t h e gudgeons 2 4
and 26
a r e
connected h y d r a u l i c a l l y
v i a
r o t a r y s e a l s
2 2
t o
t h e
hollow
e n d s
32 and 34 o f a s h a f t 36
c a r r y i n g r o t o r s
B . The
end s u r f a c e s o f s h a f t 36 a r e
f l u s h
w i t h t h e l o n g i
t u d i n a l l y i n w a r d s u r f a c e o f
f l a n g e s
2 8 a n d
3 0 ,
r e s p e c
t i v e l y , t o
p e r m i t r e m o v a l
o f r o t o r
B
from s h e l l A ,
i f
n e c e s s a r y .
I t f o l l o w s
t h a t r o t o r B s r o t a t a b l y
s u p p o r t e d
i n s h e l l
A
and connected h y d r a u l i c a l l y t o t h e e x t e r i o r v i a
r e
movable
? t t i n g s 3 8 a n d
4 0
i n
t h e
f r e e
e n d s
o f
t u b u l a r
gudgeons 2 4
and 2 6 , t o c o n n e c t gudgeons 2 4
and 2 6
w i t h
t h e
p i p e s c a r r y i n g
t h e s e c o n d
o f
t h e
two l i q u i d s
under
t r e a t m e n t . T u b u l a r gudgeons
24
and 26 a r e s e
c u r e d t o b r a c k e t s 4 2 and 4 4 , r e s p e c t i v e l y . The b r a c k e t s
4 2 and 44
a r e l o c a t e d a t
t h e t o p
o f s t a n c h i o n s
4 6 , t h e
l a t t e r b e i n g i n t u r n a n c h o r e d
t o
b a s e
p l a t e 4 8 . A
a t c h i n g
d e v i c e
5 0
i s s u p p o r t e d by e a c h b r a c k e t . A
a r t
o f
t h e
b r a c k e t s
p e r m i t r e m o v a l
o f s h e l l
A
rom
i t s
a s s o c i a t e d
b a s e p l a t e 4 8 , w h i l e t h e
r e m a i n i n g
p a r t s e n g a g e t h e s i d e
end w a l l s 1 2 - 1 4 o f t h e s h e l l A nd
h o l d
t h i s i n working
p o s i t i o n
( a s
shown
on
t h e
d r a w i n g s )
o r
i n
t h e c a p s i z e d
or
overturned p o s i t i o n
t o
which
t h e s h e l l
A
an be
r o t a t e d
a r o u n d
g u d g e o n s
2 4 a n d 2 6
t o p e r m i t c l e a n i n g
o f v e s s e l
1 0 .
I t w i l l b e c l e a r from
t h e a b o v e - d e s c r i p t i o n
t h a t s h e l l
A
a n be
l o c k e d i n t h e working
p o s i t i o n
by means o f a
s i n g l e s e t o f
l a t c h e s
5 0 which c o u l d c o n s i s t , f o r e x a m
p l e ,
o f
d e v i c e s a d e q u a t e
t o
s e c u r e
t h e arms of
b r a c k e t s
42 and - 4 t o
e a c h
o t h e r and hence a l s o gudgeons 2 4 and
2 6 .
S h a f t 36 o f r o t o r B s e c u r e l y
h o l d s
a p l u r a l i t y o f l e n t i c
u l a r s h a p e d h o l l o w b o d i e s 5 2 a r r a n g e d c o a x i a l l y on
s h a f t 3 6 a n d
a d j a c e n t t o
e a c h o t h e r . These l e n t i c u l a r
bodies
52 each o n s i s t of t w o c o n c a v e covers
or
caps 54
and
5 5
s e e
FIG.
3 )
whose
e d g e s
a r e j o in e d ,
f o r
exa m
p l e ,
b y w e l d i n g .
The
c e n t e r s
of
t h e covers
o r
caps 5 4 - and 55
p e r f o
r a t e d , a n d
e d g e s
5 6 and 5 7
o f
t h e
p e r f o r a t i o n s a r e
o r i
e n t e d i n o p p o s i t e d i r e c t i o n s t o e n g a g e , head t o head
a n d i n
s e a l
t i g h t r e l a t i o n )
e d g e s
5 7 a n d 5 6 r e s p e c t i v e l y ,
o f
a d j a c e n t
hollow b o d i e s
5 2 .
S a i d
hollow
b o d i e s 5 2 a r e
i n t u r n s e c u r e d t o
s h a f t 36 by two s e t s
o f p e r f o r a t e d
d i a p h r a g m s
5 8 a n d
6 )
i n t e r p o s e d b e t w e e n t h e
h o l l o w
b o d i e s 5 2 . S p e c i ? c a l l y : t h e
f i r s t
a n n u l a r d i a p h r a g m
5 8 i s
f o r m e d
by
r i n g s w i t h e d g e s f o l d e d
o v e r t o
p a r t i a l l y
e n g a g e s a i d
s h a f t 3 6 ;
t h e r e m a i n i n g f o l d e d
e d g e s 5 6
a n d
5 7
o f two a d j a c e n t b o d i e s
5 2 a r e j o i n e d
t o e a c h
o t h e r ,
f o r
e x a m p l e
b y
t h e w e l d i n g o f
two c o n t i g u o u s h o l l o w
b o d i e s
5 2 ,
w h i l s t t h e i n t e r m e d i a t e w a l l s
o f
r i n g s
f o r m i n g
d i a p h r a g m 5 8 a r e p e r f o r a t e d .
Annular d i a p h r a g m s
6 0 , on t h e o t h e r h a n d , c o n s i s t o f
p e r f o r a t e d
d i s c s
e x t e n d i n g f r o m
s h a f t 3 6 i n t o t h e
i n t e
r i o r o f hollow b o d i e s 5 2 ; The
f o l d e r
i n n e r e d g e s 6 2 o f
t h e s e p e r f o r a t e d d i s c s e n g a g e s h a f t 3 6 . The r a d i a l l y
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3
o u t e r Zones of s a i d d i s c s ,
o n
t h e o t h e r hand, a r e secured
a n d
l o c k e d i n p l a c e ,
f o r e x a m p l e b y
w e l d i n g , b e t w e e n
t h e i n t e r n a l
o p p o s i t e
f a c e s o f i n d e n t a t i o n s 6 4
a n d
6 5 ,
which
p r o j e c t i n t o t h e
i n t e r i o r
o f
h o l l o w body 5 2 .
R i d g e s 6 4
and
6 5 a r e s u i t a b l y s p a c e d
w i t h
r e s p e c t t o
each o t h e r t o p r o v i d e a s e t o f t h r e e
communicating
c h a m b e r s C 1 ,
C2 a n d C3 i n s i d e e a c h h o l l o w body
5 2 .
Edges
56
and
57
o f
t h e
l o n g i t u d i n a l l y
outermost
o f
hollow
b o d i e s
52
a r e j o i n e d by
welding
t o c a p s 5 5 . The
bottom p a r t s o f c a p s 5 5 a r e
p e r f o r a t e d
t o p e r m i t i n s e r
t i o n
o f
hollow e n d s 3 2 and 34 o f s h a f t
3 6 .
The
hollow
end
p o r t i o n s 3 2
and
3 4 o f t h e s h a f t 3 6 a r e
a l s o p r o v i d e d
w i t h
p e r f o r a t i o n s ,
r a d i a l l y ,
t o
a l l o w
c o m m u n i c a t i o n
between
a n n u l a r
chambers
C4 i n
t h e
c a p s 5 5 and c h a m
b e r s C1-C3
b o d i e s
5 2 . The p r e s e n c e o f d i a p h r a g m s 5 8
a n d 6 0 i n s i d e h o l l o w b o d i e s 5 2 i m p a r t s a d e q u a t e
s t i f f
n e s s t o
bodies 5 2 ,
even
i f
t h e s e
bodies
a r e
of consider
a b l e s i z e and a r e n e c e s s a r i l y
f a b r i c a t e d
o f t h i n s t e e l p l a t e
m a t e r i a l .
A d d i t i o n a l ,
? x ed
diaphragms 66 a r e arranged
and
?rmly s e c u r e d
i n s i d e v e s s e l
1 0
and
e x t e n d
o v e r
i t s
f u l l
h e i g h t .
A c c o r d i n g
t o
t h i s
p a r t i c u l a r
a r r a n g e m e n t ,
a
s u c c e s s i o n o f
chambers i s formed
i n s i d e t h e v e s s e l , s a i d
c h a m b e r s b e i n g h y d r a u l i c a l l y c o n n e c t e d t o e a c h
o t h e r
t h r o u g h
o p e n i n g s 6 8 i n t h e
t o p
p a r t o f t h e s i n g l e
d i a
p h r a g m s 6 6 ; t h e s e o p e n i n g s 6 8
p e r m i t
p a s s a g e o f t h e
c o l l a r formed by t h e f o l d e d
e d g e s 5 6
a n d
5 7
o f
h o l l o w
b o d i e s 5 2 .
Rotor B
i s - c a u s e d
t o r o t a t e
a t a s u i t a b l e
speed
by a
motor D
e c u r e d
by means o f p l a t e 7 0 t o
t h e
t o p p a r t o f
v e s s e l
1 0 . The
motor
i s h y d r a u l i c a n d a d v a n t a g e o u s l y
d r i v e s
r o t o r B
by means o f a p i n i o n 7 2 ,
c h a i n
74 and
c r o w n
wheel
7 5 .
The ? r s t h y d r a u l i c l o o p o f
t h e
e x c h a n g e r
t a k e s o n e
l i q u i d t o
b e
t r e a t e d i n t h e c a s e o f t h e p r e f e r r e d embodi
ment
s l u d g e , waste
w a t e r , e t c . from a
d u c t 76 i n
end
w a l l
1 2 a n d
f e e d s
i t i n t o v e s s e l 1 0 . The
o p p o s i t e
e n d
w a l l 1 4
i s p r o v i d e d w i t h a n e l b o w s h a p e d
d i s c h a r g e
d u c t 7 8
l e a d i n g i n t o
an
o v e r ? o w
v e s s e l
o r weir 8 0 pro
vided with a
b o tt o m
d r a i n 8 2 .
The
d i a m e t e r
o f t h e s e d u c t s
i s
r e l a t e d t o
t h e
n a t u r e
and
?ow
a t e o f t h e ?uid
under
t r e a t m e n t , which, a s
s t a t e d a b o v e , m a y be s l u d g e o r waste w a t e r .
The a r r a n g e m e n t d e s c r i b e d p e r m i t s l i q u i d ? o w
f r o m
i n l e t
t o
o u t l e t
p r a c t i c a l l y w i t h o u t o b s t r u c t i o n s , e s p e
c i a l l y
i n i t s ? o w t h r o u g h
t h e c h a m b e r s f o r m e d
b y
d i a
phragms 6 . The
b o t t o m p a r t
o f
t h e s e d i a p h r a g m s , m ay
b e
p r o v i d e d ,
i f
n e c e s s a r y ,
w i t h ? o w o r i ? c e s
o r
p o r t s .
The
s e c o n d
h y d r a u l i c
l o o p o f
t h e h e a t
e x c h a n g e r
o p e r a t e s
i n
c o u n t e r c u r r e n t
w i t h t h e
? r s t . The
second
l i q u i d
e n t e r s
f r o m d e t a c h a b l e ? t t i n g
4 0 ; a f t e r
?owing
t h r o u g h t h e ? r s t
c o l l e c t i n g c h a m b e r
C4
t h e l i q u i d ?ows
i n s u c c e s s i o n t h r o u g h
c h a m b e r s
C 1 , C 2 , C3 o f a l l
t h e
b o d i e s 5 2 t o c o l l e c t ? n a l l y , i n t h e o t h e r chamber
C4
and
d i s c h a r g e
t h r o u g h p o r t 3 8 .
The o b j e c t s
o f t h e
i n v e n t i o n a r e
t h u s
f u l l y
conformed
i . e . h e a t recovery from r e s i d u a l
l i q u i d s
i n g e n e r a l
which
m a y
a l s o
c o m e i n t h e
form
o f s l u d g e ; moreover,
t h e
h e a t
exchanger s u r f a c e s
o f
r o t o r B
a r e c o n t i n u a l l y
renewed
w i t h
r e s p e c t t o t h e c i r c u l a t i n g l i q u i d i n v e s s e l 1 0 , t h u s
e n s u r i n g
c o n s t a n t
h e a t
e x c h a n g e
a n d ,
c o n s e q u e n t l y ,
o p t i m u m t h e r m a l
e f ? c i e n c y .
I t i s
l i k e w i s e
c o n ?rm ed t h a t
s c a l e formed on
t h e h e a t
e x c h a n g e r s m e t a l s u r f a c e s
i s
e a s i l y r e m o v a b l e b o t h
from
s h e l l
A
nd from
r o t o r B ,
a s
t h e r o t o r
B
can be
d i s a s s e m b l e d from t h e s h e l l v i a
l a t c h e s
5 0 and
r e l a t e d
screws
25 which s e c u r e s u p p o r t s
1 8
t o
w a l l s 12
and 14
o f
v e s s e l 1 0 ,
s i n c e t h e s u r f a c e s
a t which e n d s 3 2 , 3 4
o f
0
20
2 5
40
45
5 5
60
6 5
4
s h a f t
36
and t h o s e
o f gudgeons 24
and
2 6
meet
c o i n c i d e
w i t h t h e f a c e s
o f
? a n g e s
2 8
and 3 0 .
A l l o u t e r s u r f a c e s o f
t h e exchanger
a r e t h u s
m a d e a c c e s i b l e
t o t h e
c l e a n i n g
m e d i a
w a t e r j e t s ,
b r u s h e s ,
e t c . )
a n d i n p a r t i c u l a r t h e
i n t e r n a l
s u r f a c e s
of
v e s s e l 1 0 .
Onc e cover
84
and
r o t o r
B r e removed
from
t h e
v e s s e l
1 0 , t h e
v e s s e l
1 0 can be
c o n v e n i e n t l y o v e r t u r n e d
on
gudgeons 2 4
and
2 6 . I f
n e c e s s a r y ,
diaphragms
66 can
a l s o
b e removed,
i n
c a s e
they
a r e
secured t o
t h e w a l l s o f
v e s s e l 1 0 , f o r
example,
by ? t t i n g
s a i d w a l l s
w i t h g u i d e s
t o
h o l d
t h e
d i a p h r a g m s
slidably.
I t w i l l be c l e a r t o t h o s e s k i l l e d
i n
t h e
a r t
t h a t
v a r i o u s
m o d i ? c a t i o n s a n d
c h a n g e s
m a y
b e
i n t r o d u c e d , d e p e n d
i n g o n p a r t i c u l a r a p p l i c a t i o n r e q u i r e m e n t s , w i t h o u t
d e p a r t i n g
f r o m t h e
s p i r i t a n d s c o p e o f t h i s i n v e n t i o n .
What
i s
c l a i m e d
i s :
1 . A e a t e x c h a n g e r , c o m p r is i n g :
a s h e l l ;
a
hollow
r o t o r
r o t a t a b l y housed
i n
s a i d s h e l l ; s a i d
r o t o r h a v i n g
a
l o n g i t u d i n a l
a x i s
a b o u t which i t i s
r o t a t a b l e ; s a i d
r o t o r
b e i n g a d a p t e d
t o
c o n d u c t h e a t
between
t s
i n t e r i o r
a n d i t s
e x t e r i o r ; s a i d s h e l l b e i n g
a d a p t e d t o have a ? r s t ? u i d ?ow
h e r e t h r o u g h i n
t h e r m a l c o n t a c t with s a i d r o t o r , and s a i d r o t o r
b e i n g a d a p t e d t o have a s e c o n d ? u i d ? o w l o n g i t u
d i n a l l y t h e r e t h r o u g h t o e f f e c t
h e a t
e x c h a n g e b e
tween t h e ? r s t and s e c o n d
? u i d s ;
t h e i n t e r i o r o f
s a i d
r o t o r
b e i n g
h y d r a u l i c a l l y
s e a l e d from
t h e
r e
mainder
o f
t h e
i n t e r i o r
o f s a i d s h e l l ; s a i d r o t o r
c o m p r i s i n g a p l u r a l i t y
o f
h o l l o w b o d i e s
whose
i n t e r i o r s communicate w i t h
e a c h o t h e r ;
e a c h s a i d
h o l l o w body c o n t a i n i n g a d i a p h r a g m
f o r
r e g u l a t i n g
t h e ?ow f
a
? u i d
t h e r e t h r o u g h ;
e a c h
s a i d hollow
b o d y c o o p e r a t i n g
w i t h s a i d d i a p h r a g m l o c a t e d
t h e r e i n t o
de?ne
a c o n s t r i c t e d r e g i o n t o
d i v i d e
s a i d
h o l l o w
b o d y
i n t o
a
p l u r a l i t y
o f
c o m m u n i c a t i n g
c h a m b e r s
f o r
r e g u l a t i n g
t h e
? o w
o f
a
? u i d t h r o u g h
s a i d
h o l l o w b o d y ;
mounting
means
f o r
r o t a t a b l y
mounting s a i d r o t o r i n
s a i d s h e l l ; a n d
means f o r r o t a t i n g
s a i d
r o t o r , i n c l u d i n g s a i d h o l l o w
b o d i e s
a n d s a i d d i a p h r a g m s .
2 . The
h e a t
e x c h a n g e r
o f c l a i m 1 ,
w h e r e i n
s a i d
r o t o r
c o m p r i s e s
a
s h a f t c o a x i a l w i t h s a i d
r o t o r
and r o t a t a b l y
mounted i n s a i d
s h e l l
by means o f s a i d m o u n t i n g means
f o r r o t a t i o n a b o u t s a i d a x i s .
3 .
The
h e a t
e x c h a n g e r
o f c l a i m 2 , w h e r e i n s a i d s h a f t
h a s ? r s t and
s e c o n d
e n d s and w h e r e i n s a i d
? r s t
a n d
second
e n d s o f
s a i d s h a f t
a r e h o l l o w ,
t h e i n t e r i o r s
o f
s a i d
s h a f t e n d s communicating
w i t h
t h e i n t e r i o r s o f
s a i d
hollow
b o d i e s .
4 . The
h e a t
e x c h a n g e r
o f
c l a i m 3 ,
w h e r e i n
s a i d
h o l
low
b o d i e s ,
a r e
s e c u r e d t o s a i d s h a f t .
5 .
The
h e a t e x c h a n g e r o f c l a i m 4 , w h e r e i n s a i d r o t o r
f u r t h e r
c o m p r i s e s
? r s t a n d s e c o n d h o l l o w c a p s c o a x i a l
w i t h
a n d
s e c u r e d
t o s a i d s h a f t ,
e a c h o f
s a i d
c a p s b e i n g
h o l l o w a n d c o m m u n i c a t i n g d i r e c t l y w i t h t h e i n t e r i o r
o f
a r e s p e c t i v e
one
o f
s a i d hollow
b o d i e s ; t h e e n d s o f
s a i d
s h a f t , i n c l u d i n g
t h e p o r t i o n s
o f s a i d s h a f t t o which s a i d
c a p s a r e s e c u r e d ,
b e i n g
hollow
and
t h e
i n t e r i o r
o f
s a i d
hollow
e n d s o f s a i d s h a f t
communicating by
means o f
r a d i a l a p e r t u r e s
formed
t h e r e i n w i t h
t h e
i n t e r i o r
o f
s a i d
hollow c a p s .
6 . The
h e a t
e x c h a n g e r
o f c l a i m
3 , w h e r e i n s a i d
h o l
low
bodies a r e
m ounted
o n
s a i d s h a f t
i n
a
row,
each
of
s a i d h o l l o w
b o d i e s
c o m m u n i c a t i n g d i r e c t l y
w i t h
a d j a
c e n t s a i d hollow b o d i e s v i a a
r e g i o n
o f each hollow
b o d y
a d j a c e n t
s a i d
s h a f t .
-
7/24/2019 [1981, Nov. 24] US4301860 Rotary Drum Heat Exchanger
6/6
4 , 3 0 1 , 8 6 0
5
7 . The h e a t e x c h a n g e r o f c l a i m 6 , w h e r e i n
s a i d
h o l ~
low
bodies
a r e
l e n t i c u l a r .
8 . The
h e a t e x c h a n g e r
o f c l a i m
2 ,
f u r t h e r c o m p r i s i n g
a
p l u r a l i t y o f
? r s t
a n n u l a r d i a p h r a g m s ,
e a c h
o f
s a i d
? r s t
a n n u l a r
diaphragms b e i n g s e c u r e d t o s a i d s h a f t a t a
p o i n t
i n t e r m e d i a t e between two a d j a c e n t o n e s o f s a i d
h o l l o w b o d i e s ; e a c h o f
s a i d ? r s t
a n n u l a r d i a p h r a g m s
h a v i n g
p e r f o r a t i o n s f o r m e d
t h e r e i n t o a l l o w a d j a c e n t
s a i d hollow
b o d i e s t o communicate w i t h each o t h e r .
9 . The h e a t e x c h a n g e r o f c l a i m 2 , w h e r e i n
s a i d d i a
phragms
a r e secured i n a f l u i d
t i g h t
manner
t o s a i d
s h a f t ;
e a c h
o f
s a i d
h o l l o w b o d i es b e i n g c o a x i a l
w i t h
s a i d
s h a f t a n d h a v i n g a r e s p e c t i v e p l a n e o f symmetry p e r
p e n d i c n l a r
t o s a i d a x i s , e a c h o f s a i d
s e c o n d
a n n u l a r
d i a p h r a g m s b e i n g d i s p o s ed i n
s a i d
p l a n e o f
s y m m e t r y
o f
a r e s p e c t i v e
one
of
s a i d hollow b o d i e s .
1 0 .
The
h e a t e x c h a n g e r o f c l a i m 9 , w h e r e i n s a i d ? r s t
a n d
s e c o n d a n n u l a r d i a p h r a g m s p r o v i d e s t r u c t u r a l s u p
p o r t f o r s a i d
l e n t i c u l a r hollow b o d i e s .
1 1 .
The
h e a t
e x c h a n g e r o f
c l a i m
9 ,
w h e r e i n e a c h o f
s a i d hollow
b o d i e s
h a s a p l u r a l i t y
o f
i n d e n t a t i o n s
formed t h e r e i n a t
s e l e c t e d
l o c a t i o n s ,
e a c h o f s a i d
i n d e n
t a t i o n s a b u t t i n g
t h e
r e s p e c t i v e s a i d s e c o n d a n n u l a r d i a
phragm
l o c a t e d i n s a i d h o l l o w
b o d y ,
s a i d r e s p e c t i v e
s e c o n d
a n n u l a r
diaphragm a n d s a i d i n d e n t a t i on s d i v i d
i n g s a i d h o l l o w b o d y i n t o s a i d
c o m m u n i c a t i n g
cham
b e r s .
1 2 .
The
h e a t e x c h a n g e r o f c l a i m 1 , w h e r e i n s a i d
s h e l l
and
s a i d
r o t o r a r e adapted t o
have
t h e
? r s t
and second
f l u i d s
? o w t h e r e t h r o u g h i n
o p p o s i t e
d i r e c t i o n s .
1 3 . The h e a t e x c h a n g e r o f c l a i m 1 , w h e r e i n
s a i d
r o t o r
h a s
a l e n g t h no g r e a t e r
t h a n
t h e l e n g t h o f t h e i n t e r i o r o f
s a i d
s h e l l , whereby
s a i d
r o t o r
c a n b e e a s i l y
removed
from
s a i d
s h e l l .
1 4 . The h e a t e x c h a n g e r o f c l a i m
1 ,
w h e r e i n s a i d
m o u n t i n g
m e a n s c o m p r i s e s ? r s t a n d s e c o n d g u d g e o n s
e a c h
s e c u r e d
t o
a
r e s p e c t i v e end
o f
s a i d
s h e l l ,
s a i d
gud
3 5
40
4 5
5 5
6 0
6 5
6
g e o n s
b e i n g h o l l o w
t o
p e r m i t
t h e
f l o w t h e r e t h r o u g h o f
t h e
s e c o n d
? u i d .
1 5 .
The h e a t e x c h a n g e r o f c l a i m
1 4 ,
w h e r e i n
s a i d
mounting means f u r t h e r c o m p r i s e s ? r s t a n d s e c o n d
s u p p o r t s
removably s e c u r e d t o t h e i n t e r i o r o f s a i d
e n d s
o f s a i d s h e l l ; s a i d g u d g e o n s b e i n g s e c u r e d t o s a i d s h e l l
by
means
o f b e i n g
s e c u r e d
t o
r e s p e c t i v e
o n e s o f
s a i d
s u p p o r t s
a n d
s a i d r o t o r
b e i n g
s u p p o r t e d between s a i d
s u p p o r t s .
1 6 .
The
h e a t e x c h a n g e r
o f
c l a i m 1 5 , w h e r e i n
s a i d
m o u n t i n g
m e a n s
c o m p r i s e s s e a l i n g f l a n g e s s e c u r e d t o
r e s p e c t i v e
o n e s o f s a i d e n d s o f
s a i d s h e l l ;
s a i d
s u p p o r t s
b e i n g
s e c u r e d
t o
s a i d s h e l l by
means
o f b e i n g s e c u r e d t o
s a i d d e a l i n g f l a n g e s .
1 7 . The h e a t e x c h a n g e r o f c l a i m 1 5 , w h e r e i n s a i d
s u p p o r t s
c o m p r i s e
r o t a t i n g s e a l s .
1 8 . The
h e a t
e x c h a n g e r o f c l a i m 1 4 , f u r t h e r c o m p r i s
i n g means l o c a t e d o u t s i d e s a i d s h e l l a n d r e c e i v i n g s a i d
g u d g e o n s a n d c o o p e r a t i n g
t h e r e w i t h
t o p e r m i t r o t a t i o n
of s a i d s h e l l
t o
a s e l e c t e d o r i e n t a t i o n .
1 9 .
The
h e a t
e x c h a n g e r
o f c l a i m
1 ,
w h e r e i n
s a i d
s h e l l
c o n t a i n s a p l u r a l i t y o f ?xed d i a p h r a g m s s e c u r e d t o s a i d
s h e l l ,
e a c h
s a i d ? x e d d i a p h r a g m
b e i n g d i s p o se d
b e t w e e n
a r e s p e c t i v e p a i r o f s a i d
h o l l o w
b o d i e s .
2 0 . The h e a t e x c h a n g e r o f
c l a i m 1 9 ,
w h e r e i n e a c h s a i d
f i x e d d i a p h r a g m h a s ? r s t a n d s e c o n d
o p p o s i t e e d g e s
a n d
i s s e c u r e d a t
s a i d
? r s t edge of
s a i d
s h e l l and h a s a s l o t
f o r m e d i n
s a i d
s e c o n d e d g e o f r e m o v a b l y r e c e i v i n g s a i d
r o t o r .
2 1 .
The
h e a t e x c h a n g e r o f c l a i m
1 ,
w h e r e i n
e a c h s a i d
hollow body h a s
a
r a d i a l l y i n n e r
p o r t i o n
a n d
a
r a d i a l l y
o u t e r p o r t i o n and w h e r e i n s a i d p l u r a l i t y
o f
chambers
i n t o which
each
s a i d hollow
body
i s
d i v i d e d
i n c l u d e
a
r a d i a l l y i n n e r chamber a n d a r a d i a l l y
o u t e r
c h a m b e r .
2 2 .
The
h e a t
e x c h a n g e r
o f c l a i m
2 1 ,
w h e r e i n
s a i d
p l u r a l i t y o f c h a m b e r s i n t o which e a c h s a i d
h o l l o w
body
i s d i v i d e d
f u r t h e r i n c l u d e s
a
t h i r d
chamber.
* * * *
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