Improvements in Refrigerating Apparatus and Appliances.
Year: 1893

page_text: Date of Application, 3rd May, 1893
Complete Specification Left, 3rd Feb., 1894-Accepted, 3rd Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in Refrigerating Apparatus and Appliances.
I RICHARD LONG of 53 Norwich Chambers, Hunter Street Sydney in the
Colony of New South Wales Engineer do hereby declare the nature of this
invention to be as follows:-
:-
These improvements relate to the combined use of a volatile liquid as ether,
and a liquid gas as carbonic anhydride; by which improvements the pressure from
the discharge of the liquid carbonic anhydride is utilized for the purpose of
evaporating the liquid ether producing an intense cold from the evaporation of the
two liquids and the combination of their gases.
The first part of my invention relates to a combined evaporator and injector for
the purpose as above described and the second part of my invention to the apparatus
for using and utilizing the cold gases given off from the combined evaporator and
injector and as my invention relates to these two parts only the necessary or desirable
plant for working in conjunction with them is not enumerated.
The first part consists of the combined evaporator and injector. A reservoir,
containing liquid carbonic anhydride (under a pressure of about 700 lbs. per square
inch) is connected by means of a pipe to a second pipe of the injector. The delivery
regulating rod terminates with a cone and can be raised or lowered to increase or
decrease the space between a tube and the cone. The liquid ether is admitted by
a tube and is delivered into a circular tube which is perforated around with small
holes. Above the latter tubes is a circular passage way for the vaporized ether
into the evaporator.
This consists of inclined tubes for the flow of the combined
gases with an outlet for the gases. A wrought iron tank contains strong brine or
a solution of chloride of calcium.
I will now describe the working of my invention. The carbonic anhydride
is admitted to the injection pipe, the quantity being regulated by the cone.
The carbonic anhydride in a liquid state is discharged into the vessel where
it vaporizes and a vacuum is thus caused in the lower part of the vessel. The
liquid ether is then admitted through a pipe into the circular tube and is discharged
through the perforated holes. The vacuum caused by the injector draws up the
vapour ether which passes through the circular passage and mixes with the
vaporized carbonic anhydride. The combined gases pass into the tube and down
the inclined tubes to the outlet. The inclination of the tube allowing the heavy
carbonic anhydride gas to flow freely thus increasing the vacuum in the evaporator.
With the outlet an exhaust pump may be connected for the purpose of separating
the gases; condensing the vapour ether and recompressing the carbonic anhydride
for further use. It will be seen that the heat is abstracted from the brine by the
cold-gases passing through the tubes and that when the apparatus is placed in a
room or chamber, the air will be rapidly cooled. The brine thus cooled may also
be used for the manufacture of ice and for other purposes.
It will be seen that the apparatus is complete in itself and the cold given off
from all the parts is utilized in the chamber to be cooled.
Dated this 3rd day of May 1893.
FREDERIC PRINCE,
Agent for Applicant.

page_text: ;
Improvements in Refrigerating Apparatus and Appliances.
I, RICHARD LONG, of Sydney in the Colony of New South Wales, Engineer,
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:-
These improvements relate to the combined use of a volatile liquid, as ether, and
a liquid gas as carbonic anhydride, by which improvements the pressure from the
discharge of the liquid carbonic anhydride is utilized for the purpose of evaporating
the liquid ether, producing an intense cold from the evaporation of the two liquids
and the combination of their gases.
:
The first part of my invention relates to a combined evaporator and injector for
the purpose as above described and the second part of my invention to the
apparatus for using and utilizing the cold gases given off by the combined evaporator
and injector, and as my invention relates to these two parts only the necessary or
desirable plant for working in conjunction with them are not enumerated.
To enable this invention to be properly understood, I will proceed to describe the
same with aid of the accompanying drawings:
Figure 1, sectional elevation of my improved injector.
Figure 2, sectional elevation of the apparatus with the injector embodied.
Figure 3, plan of Fig. 2.
The first part consists of the combined evaporator and injector, (Fig. 1).
A reservoir (not shown in the drawing) containing liquid carbonic anhydride
under a pressure of about 700 pounds per square inch, is connected by means of a
pipe to the pipe A of the injector. The delivery regulating rod C, terminates with
the cone D, and can be raised or lowered to increase or decrease the space between
the tube B, and the cone D. The liquid ether is admitted at E, and is delivered
into the circular tube F, F, which is perforated around with small holes. G, G, is
the circular passage way for the vaporized ether. This injector is connected to
the apparatus shown at Fig. 2, by pipe H. This apparatus consists of a series of
inclined tubes J, for the flow of the combined gases: K, is the outlet for the gases,
L, a wrought iron tank containing strong brine or a solution of chloride of calcium.
I will now describe the working of my invention.
The carbonic anhydride is admitted to the injector pipe H (the quantity being
regulated by the cone D). The carbonic anhydride in a liquid state is discharged
into the vessel where it vaporizes, and a vacuum is thus caused in the lower part of
the vessel. The liquid ether is then admitted through the pipe E, into the circular
tube F, F: and is discharged through the perforated holes. The vacuum caused by the
injector draws up the vapour ether which passes through the circular passage G, G:
and mixes with the vapourized carbonic anhydride. The combined gases pass into
the tube H and down the inclined tubes J, to the outlet K, the inclination of the
tube allowing the heavy carbonic anhydride gas to pour freely, thus increasing the
vacuum in the evaporator. With the outlet K, an exhaust pump may be connected
for the purpose of separating the gases, condensing the vapour ether and recom
pressing the carbonic anhydride for further use. It will be seen that the heat is
abstracted from the brine by the cold gases passing through the pipes, and that when
the apparatus is placed in a room or chamber the air will be rapidly cooled. The
brine thus cooled may also be used for the manufacture of ice, and other purposes.
It will also be seen that the apparatus is complete in itself, and that the cokl
given off from all the parts is utilized in the chamber to be cooled.

page_text: Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed: I declare that what I claim is :-
-:
1. The combined evaporator and injector substantially as and for the purposes
herein described and illustrated at Fig. 1 of the accompanying drawings.
2. The apparatus herein before described for the purpose named: and illustrated
at Fig. 2 of the accompanying drawings.
Dated this 3rd day of February 1894.
FREDERIC PRINCE,
37, Cursitor Street, Chancery Lane, London, E:C.,
Agent for Applicant.