Improvements in Ice Making Machines.
Year: 1896

page_text: Date of Application, 28th Jan., 1896-Accented, 21st Nov., 1896
COMPLETE SPECIFICATION.
Improvements in Ice Making Machines.
I, CHARLES AUGUST KÜNZEL, Jr. of No. 504 Fourth Street, Hoboken, New
Jersey, United States of America, Machinist, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
The invention consists of improvements in ice making machines, as will be
hereinafter set forth.
In the accompanying drawings
Figure 1 is an elevation partly in vertical section of an ice making machine
embodying my invention.
Figure 2 is a detail view of a cock or valve shown in Figure 1.
A designates a still in the base of which is a jet pipe B, which is connected with
the supply pipe C, the latter being provided with the cock D, whose shell projects
into the base of the still, the inner plug E of said cock being hollow and
communicating with the supply pipe C, and with the said pipe B, as more clearly
shown in Figure 2.
H designates a retort located within the shell of said still, and above the said
pipe B.
J designates an eduction pipe which is connected with the retort H, and
provided with a safety valve K, said pipe being attached to a pipe L, which is
connected with the condenser M, from which latter leads the pipe N, which is
attached to the receiver P. Q is a pipe which leads from the receiver P, and
joins the expansion coils R within the freezing tank S. T designates an eduction
pipe of expansion coils R, the same having one end connected with the pipe U,
which is inclosed in the pipe or chamber V, said pipe U being connected with the
pipe W, which enters and opens into the lower part of the absorption tank X,
which latter contains the strong liquor into which the pipe W dips.
Leading through the absorption tank X is the pipe Y, which enters the heat
exchanger Z, extending to the lower part thereof, adjacent to the end of the
pipe A', which latter leads from the retort H into said exchanger Z, said pipe A¹
having a cock B. A pipe C¹ connected at one end with the upper end of the heat
exchanger Z communicates with the branch pipe D', which is connected with the
pipe in the absorption tank and the pipe H' in the weak water cooler G¹
respectively, said pipes C and D having cocks E' and F1 respectively, said
cock F being between the absorption tank and the connection of said pipe C¹ with
the said branch pipe D'. The pipe H joins the pipe J', the latter being
connected with the pipe K', which is located within and opens into the lower part
of the absorption tauk X.
Connected with the weak water cooler G' is a water supply pipe L' which leads
from a water tank M', whereby the pipe H' may be cooled by the water admitted
into the cooler G', the latter being provided with an overflow pipe N' for
discharging the water therefrom. The tank M' is supplied with water by means
of the pipe D which is connected with a suitable pump or other source of
supply.
Connected with the heat exchanger Z is a pipe P¹ which is connected with the
pump Q which also has a pipe R' connecting it with the tank X.
S designates a pipe which is connected with the exchanger Z, and provided with
the cock T¹, one end of said pipe entering the retort H. T' designates a pipe

page_text: which extends from the tank M' to the condenser M for supplying the latter with
water.
U designates a pipe which extends from the tank M' to the pipe or chamber V
for supplying the latter with water and thereby aiding in keeping the temperature
of the gas in the pipe U within the same as low as possible, or lower than it would
be if the said pipe U were exposed to the atmosphere, the said chamber V having
an overflow pipe V returning to the said tank M. The pipe V may he
provided with an overflow cock, and the pipe Q has also an expansion cock Qat
or near its connection with the expansion coils R.
The operation is as follows:
A chemical such as aqua ammonia, suitable for making gas for freezing purposes,
is placed in the retort H, the gas generated therefrom passing through the
dehydrator A*, and discharging through the pipe L into the condenser M. The
liquefied gas then passes through the pipe N into the reservoir P, where said liquid
gas is collected, and then passes through the pipe Q into the expansion coils R
which are located in the freezing tank S, where the gas expands from a liquefied
condition into the gaseous state as it is not under pressure in said pipe R, it being
noticed that boxes are placed in said freezing tank S and supplied with water, and
as the latter is subjected to the action of the gas containing expansion coils R, it
is frozen, forming blocks of ice.
It will here be noticed that the tank S is filled with a fluid mixture of alcohol
and sea salt, and as the gas containing pipes are within said fluid and cool the same,
it is evident that the boxes are subjected to the freezing action of the fluid,
whereby the water in said boxes is frozen, thus forming the ice, as has been
stated.
The gas now enters the pipe T, and then passes into the pipe U and passes out
therefrom as expanded gas through the pipe W, into the absorption tank X, where
it is absorbed by the weak liquor in said tank. The strong liquor in said tank is
now pumped out through the pipe R' by the action of the pump Qinto the
pipe P and directed into the heat exchanger tank Z. Now if this tank Z is full,
it will overflow through the pipe S¹ into the retort H.
It will be noticed that the water in the tank G₁ cools the pipe H', and
consequently the weak liquor in said pipe, in which condition said weak liquor
enters the pipes J, K, and is discharged into the tank X, the strong liquor in the
latter being pumped out through the pipe R'. Meanwhile the weak liquors by the
high pressure in the retort H, passes through the pipe A', cock B' into the heat
exchanger tank Z. The heat carried by the chemical in the pipe A' changes the
temperature in the tank Z by heating the strong liquor therein before it passes
back to the still. The weak liquor in pipe A' passes through the pipe Y through
the tank X, and by the pipe F into the cooling tank G, in which a continual
circulation of cold water Hows through pipes L' and N through pipe J¹ into the
tank X, from which it is sucked in its original strength by the pump and forced
through tank Z and pipe S' back into the still.
If the strong liquor foams too much in the retort H, the cocks T', F¹ are closed
and the cock E opened, then the pump draws the strong liquor from the tank Z
through the pipe C into the pipe D and thence into the inlet pipe H in the
tank G where it is cooled to a lower point than it would otherwise be, thus
preventing the too sudden release of the gas upon entering the still, and from
thence it may be directed into the absorption tank X, after which it may be
pumped out through the pipe R and directed into the heat exchanger tank Z as
before.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1st. The combination of an absorption ice machine, of a still, a condenser,
expansion coils, an absorber, with a heat exchanger and weak water cooler, said

page_text: exchanger having an overflow into the still for the strong liquor, and another
overflow connected to the pipe leading from the still to the weak water cooler, and
cocks in said overflows and pipes, whereby the circulation of the weak water
through the cooler and of the strong liquor back to the still may be cut off, and
the strong liquor circulated through the cooler, whereby foaining is prevented when
the same is finally introduced into the still, substantially as described.
2nd. In an ice machine, the absorbent tank X, with the discharge pipe Y, and
the temperature changing tank Z, in combination with the pipe A', and the cock B¹,
substantially as described.
3rd. In an ice machine, the temperature changing tank Z, the pipe C', the
pipe D', and cocks E', F', in combination with the absorption tank X, the cooling
tank G the pipe J₁ the pipe K', the absorption tank X and the pipe J¹,
substantially as described.
4th. The tank G', the pipe H', the absorption tank X, and the pipe D' in
combination with the supply pipe P1, the tank M, and the overflow pipe V' on said
tank M, substantially as described.
5th. In an ice machine, the tank Z, the pipe P', the pump Q
the pipe R¹, the
tank X, the pipe S', the cock T¹ and the retort H said parts being combined
substantially as described.
6th. In an ice machine, the tank M', and the condenser M, the pipe T', the
cooling device U, V, the pipe U¹ and the pipe V, the parts being combined
substantially as described.
7th. In an ice machine, suitable pumps, in combination with the water supply
tank M' and the freezing tank S, substantially as described.
Dated this 28th day of January 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.