Improved Apparatus for Producing Cold.
Year: 1892

page_text: Date of Application, 22nd Nov., 1892
Complete Specification Left, 23rd Mar., 1893-Accepted, 29th Apr., 1893
PROVISIONAL SPECIFICATION.
Improved Apparatus for Producing Cold.
We EVERARD HESKETH and ALEXANDER MARCET both of 23 St. Swithin's
Lane in the City of London Engineers do hereby declare the nature of this inven-
tion to be as follows:-
--
Our invention relates to apparatus for producing cold and has reference to
apparatus in which the cold is produced by the compression cooling and subsequent
evaporation of a fluid such as carbonic anhydride anhydrous ammonia or the
like. The object of our invention is to provide an apparatus which is very simple
compact and economical in construction and working. According to our invention
we provide a compressor operated by any suitable motor the inlet and outlet to
and from this compressor being the respective ends of coiled tubing part of which
is situated in a refrigerator tank and another part of which is situated in a
condenser tank. In the said coiled tubing preferably at the part immediately
adjoining the outlet from the compressor is a separator which is preferably
constructed as shewn in Figure 2 of the drawings attached to the Specification of
Letters Patent No. 12676 granted to us and dated the 25th July 1891. In the
said coiled tubing there is also a reducing or regulating valve situated at the part
of the tubing between the parts thereof in the condenser and refrigerator tanks
respectively. We prefer to arrange the condenser tank in the form of an annulus
within which is the refrigerator tank. The two tanks should however have distinct
walls with insulating material between. The compressor can take the form of a
The tubing is
pump cylinder secured to the outside of the condenser tank.
connected to the outlet from the compressor and has in it at this part the separator
the said tubing being then continued in the form of a coil or coils in the condenser
tank (through which cooling water circulates) and then being continued in the
form of a coil or coils situated in the refrigeration tank. The regulator or reducing
valve is situated in the part of the tubing between the condenser and refrigerator
tanks the said valve being set so that the cooling agent which has been compressed
cooled and liquified in the condenser evaporates as it passes into and through the
coil or coils in the refrigerator tank and so abstracts heat from the brine or other
matter to be cooled which is contained in the refrigerator tank. The apparatus
should be provided with a safety device situated on the outlet pipe from the
compressor and this safety device we prefer to make of a disc or piece of material
which will withstand normal working pressure but rupture on undue pressure
occurring as described with reference to Figure 1 of the aforesaid drawings of our
Specification of Patent 12676 of 1891.
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J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improved Apparatus for Producing Cold.
We, EVERARD HESKETH and ALEXANDER MARCET both of 23 St. Swithin's
Lane, in the City of London, Engineers, 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 :-
Our invention relates to apparatus for producing cold and has reference to
apparatus in which the cold is produced by the compression cooling and subsequent
evaporation of a fluid such as carbonic anhydride, anhydrous ammonia or the like.
་་

page_text: The object of our invention is to provide an apparatus which is very simple,
compact and economical in construction and working. According to our invention
we provide a compressor operated by any suitable motor the inlet and outlet to
and from this compressor being the respective ends of coiled tubing part of which
is situated in a refrigerator tank and another part of which is situated in a con-
denser tank. In the said coiled tubing preferably at the part immediately adjoining
the outlet from the compressor, is a separator which is preferably constructed as
shewn in Figure 2 of the drawings attached to the Specification of Letters Patent
No. 12676 granted to us and dated the 25th July 1891. In the said coiled tubing
there is also a reducing or regulating valve situated at the part of the tubing
between the parts thereof in the condenser and refrigerator tanks respectively.
We prefer to arrange the apparatus as shewn in the accompanying drawings,
Figure 1 being an elevation with the outer tank in section and Figure 2 being a
vertical section with both tanks in section and with the outlet attachment of the
pump and the separator removed. Figure 3 is a plan. The condenser tank A is
shewn as being in the form of a square but it may be of circular or other con-
venient form. Within it is the refrigerator tank B. The tank A should however
have an internal wall a distinct from that of the tank B with insulating material g
between the two walls as shewn at C in Figure 2. The compressor can take the
form of a pump cylinder D secured to the outside of the condenser tank A the
piston working in this cylinder being shewn as being worked by a crank shaft from
any suitable motor. The valves of this compressor may be of the usual description..
The tubing is connected to the outlet from the compressor ate and has in it at
this part the separator F the said tubing being then continued in the form of a
coil or coils as at E in the condenser tank A and then leaving the said tank A at e
and being continued in the form of a coil or coils as at E2 situated in the.
refrigerator tank B. Through the tank A cooling water circulates being admitted
at a and leaving at a³. The regulator or reducing valve G is situated in the
part of the tubing between the condenser and refrigerator tanks the said valve G
being set so as to allow the, cooling agent which has been compressed, cooled and
liquified in the coil or coils E in the condenser tank A to pass into and evaporate
in the coil or coils E2 in the refrigerator tank B and consequently to abstract heat
from the brine or other matter to be cooled which is contained in the refrigerator
tank B. The apparatus should be provided with a safety device (indicated at H)
situated on the outlet pipe from the compressor and this safety device we prefer
to make of a disc or piece of material which will withstand normal working pressure
but rupture on undue pressure occurring as described with reference to Figure 1
of the aforesaid drawings of our Specification of Patent 12676 of 1891.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The arrangement and combination of parts constituting the apparatus. for
producing cold substantially as hereinbefore described and illustrated by the
accompanying drawings.
2. In an apparatus for producing cold the combination of a condenser tank
having within it a refrigerator tank with a compressor and a regulating valve
and tubing connected to the inlet and outlet of the compressor one part of the
tubing being situated in the condenser tank and another part in the refrigerator
tank substantially as hereinbefore described and illustrated by the accompanying
drawings.
Dated this 22nd day of March 1902