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Патент USA US3074261

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Jan. 22, 1963
3,0 74,25 l
Filed Deo. 19, 1960
2 Sheets-Sheet 1
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Jan. 22, 1963
Filed Deo. 19, 19Go
2 Sheets-Sheet 2
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United States Patent O rice
Wilbur G. Peyer, St. Paul, Minn., assigner to Whirlpool
Corporation, a corporation of Delaware
Filed Dec. 19, 1960, Ser. No. 76,659
3 Claims. (Cl. 62-340)
This invention relates to an ice maker of the type in
which water ñows over a refrigerated surface to be frozen
into a slab of ice and this ice slab is later subdivided into
small ice bodies such as ice cubes.
In such an ice maker it is customary to flow water
over the refrigerated surface member with the excess Water
flowing into a reservoir from which it is recirculated over 15
the refrigerated surface of the surface member.
The noise of the water falling into a body of water in
its circulation as well as the noise of the water flowing
vPatented Jan. 22, 1963
a conduit 22 into a distributor head 23 adjacent the top
of the inclined surface member 14.
From the head 23 the water flows over the inclined,
refrigerated surface member 14 where it is frozen into an
ice slab 16. Excess water then ñows in a stream as indi
cated at 24 in FIGURE 4 into a receiver 25l from which it
flows through a conduit assembly 26 into the reservoir 19
for recirculation over the inclined member 14.
In order that there will be an adequate supply of water,
make-up Water is provided through a conduit 27 from
which water flows into the receiver 25. Water ñow through
the conduit 27 is controlled in the well known manner by
means of a solenoid valve 28 which is energized during the
defrost cycle.
The reservoir 19 is provided with an overflow conduit
29 having an open elevated upper end 30 adjacent but
beneath the top of the reservoir 19. The overflow con
duit 29 leads to a drain 31. This drain 31 also receives
Ithrough the various conduits is often objectionable par
water produced by the melting of the ice bodies 13 during
ticularly where this type of ice maker is used in the home 20 the period they are stored within the liner 12.
for houhehold ice making. This invention is concerned
In the ordinary ice maker of this type the water ñow
with apparatus for minimizing the water flow noises.
ing from the inclined surface member 14 as indicated at
One of the features of this invention is to provide
apparatus for minimizing water flow noises in an ice maker
32 in FIGURE 2 makes considerable noise as it falls into
a receiver »such as the receiver 25. This is not too irn
having a refrigerated surface member over which water 25 portant in commercial installations but can be annoying
flows to be frozen into ice and a receiver for receiving
in household type ice makers. In order to minimize this
the excess water from this member.
noise the present invention is concerned with apparatus
Other features and advantages of the invention will be
for intercepting the stream of water 32 and releasing it
apparent from the following description of one embodi
into the receiver 25 at a controlled rate where noises are
ment thereof as Shown in the accompanying drawings.
Of the drawings:
The lower end of the inclined, refrigerated surface
FIGURE 1 is a perspective View of an ice maker em
member 14 is provided with a transverse depending lip
bodying the invention.
34 which constitutes a water flow portion in the path
FIGURE 2 is a fragmentary sectional view taken sub
of the stream 32. Cooperating with this depending lip
stantially along line 2_2 of FIGURE l.
34 is a deiiector 35 which itself has a depending lip 36
FIGURE 3 is a diagrammatic view of the refrigeration
that normally cooperates with the lip 34 to form a catch
circuit of the ice maker.
basin 37.
FIGURE 4 is an enlarged detail in section of FIG
The dellector 35 is made of stainless steel and i-s formed
URE 2.
40 at each end thereof with a partial loop 38 engaging an
In the embodiment shown in the accompanying draw
end stud 39 to provide a hinged construction. The de
ings the ice maker comprises a cabinet 10 having an
flector 35 has a body portion 40l extending away from
access door 11 at the front of the cabinet. Within the
the stud 39, the refrigerated member 14 and the lip 36
cabinet 10 is a liner 12 having a bottom below the
in order that the center of gravity of the deilector 35 will
ybottom of the access door 11 for receiving ice blocks
be located outwardly of these parts. This results in the
13 formed by the ice maker. This ice maker is of a
weight of the detlector 35 constantly urging the lip 36
well known type and the construction and operation of
into engagement with the lip 34 in order to form the reser
an ice maker of this type are shown in Ayres et al. Patent
voir 37. As can be seen most clearly in FIGURE 4, the
2,682,155 assigned to the same assignee as is this applica
lips 34 and 36 form a V in vertical cross section.
As can be seen in FIGURE 4, the reservoir 37 collects
In general this type of ice maker comprises an in
water from the falling stream 32. The weight of water
clined surface member 14 that is refrigerated by an evapo
within the reservoir 37 forces the deflector 35 away from
rator passage 15 located therebeneath. Water flowing
the lip 34 to release this water in a thin uniform stream
over the refrigerated surface member 14 is frozen into a
24. This stream then falls into the body of water 41
slab of ice 16 which upon release from the member 14
within the receiver 25. Because of the interruption of
rslides therefrom onto a cutter device 17. This cutter de~
-the stream 32 by the reservoir 37 and because the re
vice contains electrically heated wires (not shown) for
lease of the water from this reservoir is in a thin, con~
cutting the ice slab 16 into the ice bodies 13. These
trolled rate stream 24 which is uniform all along the
falling ice bodies are >deflected away from the door 11
width of lip 34, the noise of the water falling into the
by means of an inclined bañie 18. The details of the 60 body of water Within the receiver is greatly reduced over
evaporator passage 1'5 and of the ice slab cutter device
what the noise would be without the provision of the
17 are not shown as they form no part of the present
reservoir 37 to interrupt the stream.
invention. However, similar elements are shown and
The conduit assembly 26 through which water ñows
described in detail in the above-mentioned Ayres et al.
from the receiver 25 into the reservoir 19‘ constitutes a
65 pair of concentric tubes 42 and 43. The outer tube 42
In order to circulate water over the inclined surface
has an upper end 44 elevated above the bottom of the
member to be frozen into the ice slab 16, there is pro
receiver 25 so as to constitute a weir over which water
vided a water iiow system including a reservoir 19 within
ñows from the body 41. The interior 45v of this outer
the liner 12 beneath the refrigerated member 14. From
tube is tapered inwardly from top to bottom.
this reservoir, having located adjacent the bottom thereof 70 The inner tube 43 is provided on its outer surface with
a submerged pump 20 powered by a motor 21, water
a pair of diametrically opposed, outwardly extending pins
is forced by this pump 2li from the reservoir 19 through
46. These pins y46 rest on the bottoms of similarly lo
cated U-shaped recesses 47 at the top of the outer tube
42. With this arrangement the inner tube 43:Á is suspended
freely within the outer tube 42 and water ñows from the
body of water 41 down through the annular space 4S
between the tubes 42'and' 43. Because the space'48 isvof
gradually reduced cross sectional area from top to bottom,
the ñow of water in this space is quite slow and ap
.proaches being a static column of water. Water also
ñows from the body of water 41 down through the in
terior of inner tube 43» The noise of the water running
through the tube 43 is muiîied or deadened by the almost
static column of Water in space 48. 'The fact that the
ends of tubes 42 and 43 terminate below the normal level
of water in the reservoir 19 also has a quieting effect
on the water entering the reservoir from above.
FIGURE 3 illustrates diagrammatically the refrigera
tion system for the ice maker. This system is conven
maker having an inclined refrigerated member over which
water flows to be frozen into a slab of ice and a water
receiver beneath a lower edge of >said member for receiv
ing excess water from said member, comprising: a depend
ing lip on said lower edge over which said water flows
to said receiver; and a deflector having a depending lip
engaging said edge lip to form a catch basin therewith,
said deilector and edge lip being relatively movable to
release water from said basin in a thin stream.
2. Apparatus for minimizing water flow noise in an
ice maker having an inclined refrigerated member over
which water flows to be frozen into a slab of ice and
a water receiver beneath a lower edge of said member
for receiving excess water from said member, comprising:
tional in an ice maker of this type. The system includes
a depending lip on said lower edge over which said water
flows to said receiver; a deílector having a depending lip
engaging said edge lip to form a catch basin therewith;
hinge means mounting said deflector for movement toward
the surface member plate 14 having associated therewith
and away from said edge lip; and gravity responsive means
evaporator passage 15. The system also includes a con 20 urging said lips toward said engagement.
denser 50 and a compressor r51. When the ice slab 16
3. Apparatus for minimizing water How noise in an ice
maker having an inclined refrigerated member over which
has reached the desired thickness, a control (not shown)
causes a solenoid valve 52 to open. This causes hot
water flows to be frozen into a slab of ice and a water
high pressure gas from the compressor 51 t0 by-pass the
receiver beneath a lower edge of said member for receiv
condenser S0 and pass directly into the evaporator pas 25 ing excess water from said member, comprising: a de
sage 15. This hot gas causes the ice slab 16 to be loosened
pending lip on said lower'edge over which said water
from the surface member 14 so that it slides from the
flows to said receiver; a deflector having a depending lip
member 14 onto the cutter device i7. As soon as this
engaging said edge lip to form a catch basin therewith;
hasl occurred, the valve 52 is again closed so that the
and hinge lmeans mounting said deflector for movement
refrigerant follows its normal path from the compressor 30 toward and away from lsaid edge lip, said deñector having
51 through the condenser Sii and capillary 53 into the
a center of gravity spaced from said hinge means to urge
evaporator passage 15 for again chilling the surface mem
said .deñector lip into basin forming association with said
ber 14 to a, subfreezingtemperature;
edge lip.
Having described my invention as related to the em
bodiment shown in the accompanying drawings it is my
intention that the invention be' not limited by any of the
details of description, unless otherwise specified, but rather
be construed broadly within its spirit and scope as set
out in the accompanying claims.
The embodiment of the invention in which an exclusive
property or privilege is claimed is defined as follows:
l. Apparatus for minimizing water ñow noise in an ice
References @sited in the file of this patent
Weseman ____________ __ Feb. 19,
Ayres ________________ _.. June 29,
Pichler ______________ __ May 29,
Thomas ____________ __ May 26,
Swanson ______________ __ Nov. 8,
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