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Патент USA US3074262

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Jan- 22, 1963
J. R. TIPPMANN ETAL
10E MAKING APPARATUS
Filed July 1o, 1959
Fgga.
20
36
38
3,074,252
United States Patent O
1
3,074,252
Patented Jan. 22, 1963
2
cooling refrigerant through the plates i4. Preferably,
3,074,252
ICE MAKING APPARATUS
Joseph R. Tippmann, Lawrence E. Tippmann, and Law
rence E. Tippmann, Jr., Fort Wayne, Ind., assignors t0
Chicago Stock Yards Turbo Refrigerating Company,
Chicago, Ill., a corporation of Illinois
Filed July 10, 1959, Ser. No. 826,254'
9 Claims. (Cl. 62--347)
these plates or elements 14 are constructed of metal.
Along the upper marginal edges of the two plates 14
are secured two deflector plates 20 inclined upwardly
and inwardly toward each other and extending from the
respective freezing surfaces 16 4as shown in FIG. 2. It
should- be stated at this point that the upper edges of
the freezing plates 14 are horizontal and that the de
flector plates 20 extend coextensively horizontally with
The present invention relates to ice-making apparatus,
these edges. These plates 2G may be welded or other
wise suitably secured to the plates 14 in such a manner
and more particularly to apparatus useful in making
efficiently ice in sheet form.
that water dropping onto the plates will flow downwardly
Ice-making apparatus of the type which the present
onto the freezing surfaces I16.
invention is concerned includes many different alterna
Supported on the frame 10` immediately above the
tive designs which may be characterized according to 15 de'ñector plates 2G is a distributor pan 22 having up
basic lconstruction as being plate i-ce, cylindrical ice and
standing sides and a bottom 24. ri`-his pan preferably
tubular ice apparatus, each of these apparatuses utiliz
is of shallow construction and in length is coextensive
ing freezing elements of suitable geometrical design upon
with the horizontal dimension of the deñector plates.
which the ice is frozen.
The present invention relates more particularly to, a
plate ice machine which is capable of producing ice in
given quantities more efficiently and at less cost than
In the bottom 24 ‘are provided a series of horizontally
spaced drain holes 26 in registry with the two ydeñector
plates 2i?, there being >an adequate number of holes for
producing a relatively even flow of water from the pan
22 over the entire exposed surface of the two plates 20
`prior apparatuses. Also, the present invention is. `di
rected toward the provision of apparatus which is simpler
in design, economical in operation, and utilizes fewer
moving parts.
and also the freezing surfaces 16 of the plates 114. In
a working embodiment of this invention, these holes may
have a diameter of one-quarter (1/4) inch.
It is therefore an object of this invention to provide
mechanism for use in ice-making apparatus, which is
ported between `the two deflector plates 20 is a distributor
relatively simple in construction, eñìcient in operation
pipe 28 which extends horizontally and parallel to the
Immediately beneath the pan 22 and suitably sup
30 plates. This pipe is provided with a series of jet aper
and reliable vfor long term usage.
It is another object of this invention to provide, in
tures 30 along the length thereof between the horizontal
an ice-making apparatus, means for flowing water over
extremities of the plates 20, there «being two axially
freezing elements, this means requiring no line Ápressure
aligned series of these apertures 30, one series being
to obtain the flow.
directed toward theleft-hand deflector 20 and the other
It is another object of this invention to harvest the
series being directed toward the right-hand dellector 20
ice by use of relatively warm water, which water is
as viewed in FIG. 2. Means is provided for connecting
cooled during harvesting and thereafter used in making
the left-hand end (fFIG. l) of this pipe 28 to a suitable
ice on the next succeeding freezing cycle.
source of'ambient temperature water, this temperature
It is still another object of this invention to provide
in -a working embodiment of this invention usually lying
a water-collecting assembly -which functions to maintain
in the range of from 50° to 75° Fahrenheit. The right
slush formed during the yfreezing cycle from interfering
hand end 32 of this pipe 28 is closed. Water introduced
with the proper operation of the apparatus.
into the left-hand end of the pipe flows out of the jet
Other objects will become apparent »as the description
`apertures and onto the respective ‘deflector plates 20‘
proceeds.
and downwardly over .the back sides 34 of the freezing
To the accomplishment of the above and related ob 45 plates. 14.
jects, the invention may be embodied-in. the forms illus
Along the lower horizontally extending edges 36 of
trated in the accompanying` drawings, attention being
vthe respective freezing plates 14 are secured two `drain
called to the fact, however, that the drawings are illustra
plates 38 which may be identical in shape and con-figura
tive only, and that specific change may be 4made in the
tion to the two Ideflector plates 20. These plates 38
specific constructions illustrated and described, so long 50 incline downwardly and inwardly toward each other and
as the scope of the appended claims is not violated.
In the drawings:
FIG. 1 is a simplified side view of one embodiment of
_this invention;
FIG. 2 is ~a sectional illustration taken substantially 5
along section line 2--2 of FIG. 1;
FIG. 3 is a perspective illustration of the freezing
have outer surfaces which blend or merge into the outer
.surfaces 16 of the respective freezing elements.
Supported on the frame 10 immediately beneath the
lower extremities of `the drain plates 38 is a trough 44)`
.having upstanding sides :and a flat bottom. As viewed in
FIG. 1, the right-hand end ofthe trough is closed while
vthe left-hand end 42 is open. The trough is inclined slight
ly so yas to ydrain liquid-toward Ithe left as viewed in FIG.
_
1, the left-hand end of the trough extending slightly
FIG. 4 is a perspective illustration of a baffle plate
60 beyond the left-hand edges of the ltwoplates 318i and the
illustrated in section in FIG. 2.
freezing elements 14.
Referring to the drawings, and more particularly to
element used in the preceding figures; and
FIG. 1, the apparatus comprises a friame,rgenerally in
dicated by the reference numeral 10, formed of suitable
angle iron to support the various pieces of the appa
ratus in proper position with respect to each other. On
this frame 10 are mounted, by two suitable frame up
Beneath the discharge end 42 of the trough 40‘ is sup
ported by means of the ?iame 10 a water-collecting as
sembly which includes `a main tank 44 and an auxiliary
tank 46. Both of these tanks 44 and 46 have flat bottoms
and upstanding sides, the tank 46- being smaller rthan the
tank 44> and supported inside the latter in an elevated posi
»rights 12, a pair of identical `freezing plates 114, these
tionby means of «a suitable frame piece 48` and, for ex
plates being parallel and vertically aligned as shown.
ample, an overflow pipe 50. The tank 44 :is made rela
The outer surfaces 16 of these respective plates 14 are 70 tively deep so 'that when itis ñlled with water, any slush
>flat and vertical and .are in thermally conductive contact
(ice) in the water will float near 'the top, leaving slush
with pipes or passages 18 which carry and circulate the
free water adjacent the bottom thereof.
3,074,252
4
3
The tank 46 is positioned immediately beneath the
quantity of water drained through the aperture. The
discharge end 42 of the 'trough 40 so as to receive ‘all of
the contents which flow from the trough 40. The bottom
52 of the tank 46 is provided with a series of relatively
small apertures 54 through which water may drain into
water which does drain -through still drops on the de
the larger tank 44. The overllow pipe ‘50 stands upright
not function Ito maintain a ñow of water onto the freez
fleotor plates 20.
Prior devices `which utilized distributor pipes for flowing
water onto the freezing surfaces of the plates 14 could
ing surfaces if one or m-ore of the jet apertures became
and passes through the bottoms of both tanks 44 and
either fully or only partially clogged. 'I'he pan distributor
46. The upper end S6 of the pipe 50 is disposed adjacent
22, however, insures that whatever water does drain from
but below the upper edges of both tanks Overllow water
spilling into Vthe tank 46 flows out of the overflow pipe 10 the pan will always fall onto the plates 26 land flow over
the freezing surfaces ‘16.
50 before it has ‘la chance 'to pass into the larger tank 44
This Water cycle is continued for a sufficient period of
through the openings 54. This tends to prevent warm
time until a lilm of ice builds to a suitable thicknesss on
>overñow water from becoming mixed with water in the
the freezing elements 14. Following this, the ice is har
tank 44.
ln the bottom 58 of the tank 44 is 1an outlet 6U having 15 vested; this is accomplished by first stopping the refrig
a connection to a water pump 63l which pumps the Water
erating system «and the circulating pump 63 and thereafter
from the tank 44 upwardly -into the distributor pan 22
as diagramrn'atically illustrated in FIG. 2. Over the out
let 60 is positioned a flat baffle plate 62 (see FIG. 4) hav
ing corners 64 bent downwardly to provide legs. The
plate 62 and fthe bottom 58 thereby cooperate to draw
water from the lower lateral portions of Athe tank 44 in
stead of drawing surface water downwardly directly into
the outlet 6i). 'Ihe importance lof this feature will be
explained more fully hereinafter.
In operation, the pan 44 is initially filled with water
to a suitable level. The refrigerating system (not shown)
is started in operation to cool the plates 14 to a tempera
ture below that at which water freezes. Simultaneously,
the water pump 62 is energized, forcing water from the
tank 44 upwardly :and -into the distributor pan 22. This
water flows downwardly through the drain holes 26 onto
the dellector plates 20, ‘and from these plates it ñows
downwardly over the entire freezing surfaces ‘16 of the
two freezing elements 14. Because of surface adhesion,
the water will adhere to ‘the surfaces 16 and will llow
inwardly Aalong ‘the drain plates I3S to» drain into the
trou@ 40. From the trough, the water drains into the
auxiliary make-up tank 46, and from this tank it flows
through the drain apertures 54 'and into the main tank
warming lthe plates 14 so as to release the ice sheets there
from. This warming of the plates is accomplished by
means of the llow of water over the back sides 34 from
20 the distributor pipe 28, water at ordinary, ambient tem
peratures being used for this purpose.
Of course, it is
necessary that this water be at temperatures above freez
ing. The water llows downwardly over the back sides 34
of the freezing elements 14, drains into the trough 40,
25 the auxiliary make-up tank 46 and into the main tank
44. This action is continued until the ice bond is melted
sufficiently for the sheet to drop off the respective sur
face 16.
Of importance in the harvesting operation is the fact
30 that the water which is initially flowed over the back sides
34 is cooled considerably by the time it leaves the bottom
edges of the elements 14. Since it is this same water
which is used to form the ice in the next freezing cycle,
it is of course desirable to maintain this cool tempera
35 ture in the water. This is accomplished by the use of
the two tanks 44 and 46 in the respect that a certain
quantity of water is used in lthe formation of the ice
which lowers the level of the water available in the main
tank 44. The original harvesting water which is cooled
down flows into the auxiliary tank 46 and from there
44 before repeating its ñow cycle. As the freezing ele
into the main tank 44. Thus, the level in the tank 44
ments 14 cool down, 'the water flowing over the surfaces
rises, this water’ being relatively cool. However, near
16 will start -to freeze; however, this freezing action is
the end of the harvesting cycle, as the plates 14 warm up,
not instantaneous but instead takes place relatively grad
the water leaves the lower edges of the plates 14 at about
ually and thus forms an ice-slush which does not adhere 45 the same temperature as exists in the distributor 28. Since
to the surfaces but instead flows downwardly into the
this water would warm up the cool water in tank 44, it is
trough 40. This slush interferes with the proper opera
of course desired to prevent any mixing of this warm
tion of the apparatus, for one thing serving to clog the
water with the cool water. This is accomplished by means
water pump 63 and the drain apertures 26 in the dis
of the auxiliary tank 46 and the overñow pipe 50, the
tributor pan 22. Thus, it is desirable in order to main 50 tanks bein'g of such size that near` the end of `the harvest
tain efficient and reliable performance of the apparatus
ing cycle the water in the tanks Will rise to about the
to eliminate the deleterious »effects of this slush and this
level of the overflow mouth 56. Thus, the warmer water
is -accomplished in a chain of events in this apparatus.
flowing off the plates 14 near the end of the harvesting
In the íirst instance, the trough 40 is disposed at only
cycle merely flows from the tank 46 out of the overflow
a slight angle so that it »is very nearly horizontal. This 55 pipe 50 before it has a chance to mix with the cooler
being true, slush tends to collect along the bottom of the
water in the tank 44. By this means, greater eñ'iciency
trough. Any slush which ñows out »of the discharge end
42 of the trough next falls into the auxiliary make-up
in operation is achieved.
provide a circulating, walter system which 'is relatively free
from .the deleterious effects of slush.
If, in fact, particles of slush should happen to be
expense, especially in the instance in which ice-making
Considering for the moment the use of the open dis
tank 46. Since the slush lloats in water, the slush will
tributor pan 22, and comparing lthe use of this pan with
tend to remain iin the top of the tank 46 while only water 60 prior art machines which utilized pressure-distributing
>drains through fthe apertures '54. The water which is col
pipes to spray water onto the freezing surfaces of the
lected by the tank 44 is rtherefore relatively free from
freezing plates |14, it is important to note that the use of
slush. However, if some slush should pass through the
this pan leads .to greater efficiency in operation. For ex
apertures 54, it _will ñoat to the top of the water in the
ample, water sprayed onto the freezing surfaces of the
tank 44. By reason of ithe presence of the baffle 62 65 freezing elements splashes, some of the splashed water
which draws w-ater from the bottom only of the tank 44,
falling free of the freezing surfaces. This being true, a.
the -lloating slush will not be sucked downwardly and into
certain quantity of water is lost. This loss represents an
the water pump 62. All -of these features cooperate to
continues around the clock. The use of the pan avoids
any loss of water, since «no pressure is used for forcing
the water onto the freezing surfaces. The water merely
pumped back up into the pan 22, this slush will have no
drains from the pan through the holes under no pressure
particular deleterious effect on the functioning of the ap
which could cause splashing and loss of water.
paratus inasmuch as it usually can produce only partial
clogging of the apertures 26, thereby only reducing the 75 Other -advantages residing in the use of the pan dis
3,074,252
5
tributor over a pipe distributor will occur to persons
skilled in the art.
What is claimed is:
l. In >an ice-making apparatus, two upright substan
tially rectangular planar freezing elements supported in
spaced parallel relation, said elements having on 'che
remote sides thereof relatively flat freezing surfaces, two
deñector plates secured to the upper horizontally extend
ing edges of said elements respectively, said plates ex
tending from the respective freezing sur-faces and being 10
6
a series of drain openings therein in registry with said
inclined plates, two. drain plates secured to the lower
horizontally’extending edges of said'elements respective
ly, vsaid drain- plates extending from 'the respective freez
ing surfaces and being inclined downwardly and toward
each other, an inclined trough supported beneath said
drain plates'to receive water which drains therefrom, a
water-collecting tankv assemblyv supported beneath said
trough. to receive the water'which` drains from said
pan having upstanding sides and a horizontally extending
bottom, said pan being disposed immediately above said
trough, said assembly comprising two tanks supported
one inside the other, both tanks having upstanding sides
and bottoms respectively, said one tank having a plurality
of drain yapertures in the bottom thereof, an upstanding
plates and having a series of drain openings therein in reg
overflow pipe having an open end disposed inside vsaid one
inclined upwardly and toward each other, a distributor
istry with said inclined plates, a distributor pipe supported 15 tank, and an outlet in the bottom of said other tank.
4. In an ice-making apparatus,v two upright substan
between said inclined plates and having a plurality of
tially rectangular planary freezing elements supported in
spaced orifices directed to spray water onto andalong
spaced parallel relation, said elements having on the
the upper edges of the facing sides of said elements/two
remote sides thereof relatively flat freezing surfaces, two
drain plates secured to the lower horizontally extending
edges of said elements respectively, said drain plates ex 20 deilector plates secured to the upper horizontally extend
ing edges of said elements respectively, said plates ex
tending from the respective freezing surfaces and being
tending from the respective freezing surfaces and being
inclined downwardly and toward each other, an inclined
inclined upwardly and toward each other, a distributor
trough supported beneath said drain plates to receive
Vpan having upstanding sides and a horizontally extending
water which drains therefrom, a water-collecting tank
assembly supported beneath said trough to receive the 25 bottom, said pan being disposed immediately‘above said
plates and. having a series of drain openings therein in
which drains from said trough, said assembly comprising
registry with said. inclined plates, a distributor pipe sup
two tanks supported one inside the other, 4both tanks
ported between said inclined plates and having a plurality
having upstanding sides'and bottoms respectively, said
.of spaced orifices directed to spray water onto and along
one tank having a plurality of drain apertures in the
bottom thereof, an lupstanding overñow pipe having an 30 the upper edges of the facing sides of said elements, two
drain plates secured to the lower horizontally extending
open end disposed inside said one tank, an outlet in the
bottom of said other tank, a baille plate supported over
edges of> said elements respectively„ said drain plates
to said distributor pan.
water which drains oif said elements.
extending from the respective freezingsurfaces. and being
and spaced immediately above said outlet, and a pump
inclined downwardly and toward each other, and tank
ing mechanism connected ‘between said outlet and said
istributor pan for pumping water from said second tank 35 means disposed- beneath said drain plates for collecting
`
5. In an ice-making apparatus, an upstanding freezing
>element vhaving one flat vertically disposed freezing Vsur
tially rectangular planar freezing elements supported in
face, a deflector plate supported to extend from the upper
spaced parallel relation, said elements having on the re
mote sides thereof relatively ñat freezing surfaces, two de 40 portion of said element in an inclined direction away
from said freezing surface, the upper surface of said
flector plates secured to the upper horizontally extending
2. In an ice-making apparatus, two upright substan
plate terminating adjacent to the upper portion of said
edges of said elements respectively, said plates extending from the respective freezing surfaces and being in
freezing surface, a distributor pan having a bottom sup
clined upwardly and toward each other, a distributor pan
ported above said plate, said bottom having holes in regis
try with said plate, a water-collecting assembly disposed
having upstanding sides and a horizontally extending
bottom, said pan being disposed immediately above said
plates and having a series of drain openings therein in
registry with said inclined plates, a distributor pipe sup
ported between said inclined plates and having a plurality
below said element, means directing water from said ele
ment into said assembly, said assembly comprising two
tanks supported one inside the other, both tanks having
upstanding sides and bottoms respectively, said one tank
of spaced orifices directed to spray water onto and along 50 having a plurality of drain apertures in the bottom there
of, an upstanding overñow pipe having an open end dis
posed inside said one tank, an outlet in the bottom of
said other tank, a baille plate supported over and spaced
the upper edges of the facing sides of said elements, two
drain plates secured to the lower horizontally extending
edges of said elements respectively, said drain plates
extending from the respective freezing surfaces and be
ing inclined downwardly and toward each other, an in
clined trough supported beneath said drain plates to
receive water which drains therefrom, a water-collecting
tank assembly supported beneath said trough to receive
the water which drains from said trough, said assembly
comprising two tanks supported One inside the other,
both tanks having upstanding sides and bottoms respec
tively, said one tank having a plurality of drain apertures
in the bottom thereof, an upstanding overflow pipe hav
immediately above said outlet, and a pumping mecha
nism connected between said outlet and said distributor
pan for pumping water from said second tank to said
distributor pan.
6. In an ice-making apparatus, an upstanding freezing
element having one flat vertically disposed freezing sur
face, a dellector plate supported to extend from the upper
portion of said element in an inclined direction away
from said freezing surface, the upper surface of said plate
terminating adjacent to the upper portion of said freezing
surface, a distributor pan having a bottom supported
outlet in the bottom of said other tank.
65 above said plate, said bottom having holes in registry with
said plate, a water-collecting assembly disposed below
3. In an ice-making apparatus, two upright planar
said element, means directing water from said element
freezing elements supported in spaced parallel relation,
ing an open end disposed inside said one tank, and an
said elements having on the remote sides thereof rela
tively flat freezing surfaces, two deflector plates secured
into said assembly, said assembly comprising two tanks
supported one inside the other, both tanks having up
to the upper horizontally extending edges of said ele 70 standing sides and bottoms respectively, said one tank
having a plurality of drain apertures in the bottom there
ments respectively, said plates extending from the re
of, an upstanding overñow pipe having an open end dis
spective freezing surfaces and being inclined upwardly
posed inside said one tank, and an outlet in the bottom
and toward» each other, a distributor pan having upstand
ing sides and a horizontally extending bottom, said pan
of said other tank.
being disposed immediately above said plates and having 75 7. In an ice-making apparatus, an upstanding freezing
3,074,252
7
8
tationally across the freezing `surface, refrigeration means
element lhaving one ñat vertically disposed freezing sur
face, said freezing surface having front and rear sides,
a detlector plate supported to extend from thev upper por
tion of said element in an inclined direction away from
the front side of said freezing surface, the upper surface
of said plate terminating adjacent to the upper portion
of said freezing surface, a distributor pipe‘having a plu
in heat exchange with the back side of the plate for re
frigeration of the plate, the free water ñowing across the
front face to build up an ice layer thereon, a collecting
trough underlying the lower edge of the plate and olfset
rearwardly from vertical alignment with the front face
of the plate and a portion turned rearwardly from the
lower edge of the plate and terminating in vertical align
rality of longitudinally spaced apertures, said pipe -being
ment with the collecting trough whereby free water iìow
disposed adjacent to the rear side of said freezing surface
with said apertures directed toward said rear side for 10 ing downwardly across the front face of the plate fol
lows the rearwardly turned portion for flow into the col
spraying the same with relatively warm Water, a distribu
lecting trough while the ice layer released from the
tor pan having a bottom supported above said plate, said
face of the plate fal-ls downwardly from the plate clear
bottom having holes in registry with said plate, and
of the collecting trough, and means for projecting
means for collecting water drained from saidfreezing
surface and delivering such collected water to said dis~ 15 water at a temperature above freezing onto the back side
of the plate for release of the ice layer collected on
tributor pan.
.
the front face thereof, and in which the collecting trough
8. In an ice-making apparatus, an upstanding freezing
etxends rearwardly beyond the back side of the plate for
element having one ñat vertically disposed freezing sur
collection of the water ñowing down the front side of the
face, said freezing surface having front and rear sides, a
dellector plate supported to extend from the upper por 20 plate and the water which is projected onto the back
side of the plate and is cooled during flow downwardly
tion of said element in an inclined `direction away from
over the back side of the plate.
`
the front side of said freezing surface, the upper surface
of said plate terminating adjacent to the upper‘portion
References Cited in the tile of this patent
of said freezing surface, a distributor pipe having a plu
rality of longitudinally spaced apertures, said- pipe being
25
disposed adjacent to the rear side of lsaid freezing sur
face with said apertures directedïtoward said rear side
for spraying the same with relatively warm water, a water
receptacle supported above said plate, means ‘forï distribut
ing water from said receptacle onto the upper surface 30
of said ,deilector'plata and means for collecting water
drained from said freezing surface'and deliveringV such
collected water to said distributor pan.
.
,
9. In an ice-making machine, a vertically disposed ñat 35
metal plate having a freezing surfacevon the front face,
means for applying water across the upper edge portion
of the front face of the plate for ilow downwardly gravi
UNITED STATES PATENTS
_
795,753
1,195,495
1,564,075
1,966,150
2,093,458
2,288,003
2,310,468
2,628,485
2,682,155
2,721,452
2,729,070
Barrath ____________ __ July 25,
Ophuls ______________ __ Aug. 22,
Lakin ________________ __ Dec. 1,
Tamm ______________ __ July 10,
Lincoln ____________ __ Sept. 21,
Kleucker ____________ __ June 30,
Short ________________ __ Feb. 9,
Toulmin ____________ __ Feb. 17,
Ayres ______________ __ June 25,
Brandin ____________ __ Oct. 25,
Ames ________________ __ Jan. 3,
1905
1916
1925
1934
1937
1942
1943
1953
1954
1955
1956
2,730,865
Murdock ____________ __ Jan. 17,
1956
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