An Improvement in Refrigerating Apparatus.
Year: 1887

page_text: Date of Application, 12th Mar., 1887
Complete Left, 10th Dec., 1887
Complete Accepted, 13th Jan., 1888
[Communicated from abroad by LA COMPAGNIE GÉNÉRALE POUR LA PRODUCTION DU
FROID (Procedes E2. Fixary), 15, Avenue de l'Opéra, Paris, France.]
FROID (Procedes 1. Fixary), 19, Avenue de Operayaay
An Improvement in Refrigerating Apparatus.
I, JOHN IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the County
of Middlesex, Consulting Engineer and Patent Agent, do hereby declare the nature
of this invention to be as follows:-
In the Specification No. 2387 of 1885 is described refrigerating apparatus wherein
the variations of temperature produced by alternate vaporisation and condensation of
a volatile liquid are utilised for cooling the air supplied to apartments or store-rooms
and for furnishing distilled water by the melting of the rime resulting from freezing
the moisture of the air that passes through the apparatus. In the apparatus described
in the said Specification there are two sets of pipe coils with suitable cocks and valves
so arranged that while the refrigerating action of the one set cools the air and causes
rime to be deposited, the heat resulting from compression in the other set melts off
The action of the two
the rime which had collected on it, to furnish distilled water.
sets is from time to time alternated, when the refrigerating set of coils becomes
warmed пр nearly to the temperature of the air supplied.
According to the present invention a third set of coils is combined with the other
two, and the controlling cocks and valves are so disposed as to operate in the following
manner: At every alternation of the two coils first mentioned, there exists in the one
which has for a time been cooling the air a volume of gas which has attained nearly
to the temperature of the air supplied. This volume is made to pass through the
other coil where its heat serves to melt off the rime. Again, while the refrigerating
fluid is kept constantly circulating through the third coil, the air which has been
cooled below the freezing point by the other coils, and which has deposited almost all
its moisture, is passed over the third coil. This air, being almost absolutely dry,
deposits no rime and, consequently, becomes cooled to a very low temperature. If,
after a time, a little rime is found to be deposited on the third coil, it is only necessary
to pass a little of the warm air supply over it in order to melt off the rime, whereupon
the normal action can be resumed.
Dated this 12th day of March 1887.
ABEL & IMRAT,
Agents for the Applicant.

page_text: An Improvement in Refrigerating Apparatus.
I JOHN IMRAY of No. 28 Southampton Buildings, Chancery Lane in the County
of Middlesex, Consulting Engineer and Patent Agent, 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 :--
In the Specification No. 2387 of 1885 is described refrigerating apparatus wherein
the variations of temperature produced by alternate vaporisation and condensation of
a volatile liquid are utilised for cooling the air supplied to apartments or store-rooms
and for furnishing distilled water by the melting of the rime resulting from freezing
the moisture of the air that passes through the apparatus. In the apparatus described
in the said Specification there are two sets of pipe-coils with suitable cocks and valves
so arranged that while the refrigerating action of the one set cools the air and, causes
rime to be deposited, the heat resulting from compression in the other set melis off
the rime which had collected on it, to furnish distilled water. The action of the two
sets is from time to time alternated, when the refrigerating set of coils, becomes
warmed up nearly to the temperature of the air supplied.
According to the present invention a third set of coils is combined with the other
two, and the controlling cocks, and valves are so disposed as to operate in the following
manner. At every alternation of the two coils first mentioned there exists in the one
which has for a time been cooling the air, a volume of gas which has attained nearly
to the temperature of the air supplied. This volume is made to pass through the
other coil where its heat serves to melt off the rime. Again, while the refrigerating
fluid is kept constantly circulating through the third coil, the air which has been
cooled below the freezing point by the other coils, and which has deposited almost all
its moisture is passed over the third coil. This air being almost absolutely dry,
deposits no rime, and consequently, becomes cooled to a very low temperature. If
after a time a little rime is found to be deposited on the third coil, it is only necessary
to pass a little of the warm air supply over it in order to melt off the rime, whereupon
the normal action can be resumed.
An arrangement of the above described improved construction of refrigerating
apparatus is shewn on the accompanying drawings, in which Fig. 1 shews a vertical
section on line CD Fig. 2; Fig. 2 shews a sectional plan on line E F Fig. 1, Fig. 3
shews a vertical section on line A B Fig. 2, and Fig. 4 shews a diagram plan of the
pipe circuits through which the ammonia vapour circulates.
Assuming the coil A in Fig. 4 to have had the rime removed from it, and that the
coil B is covered with rime, the cocks being in the position shewn at Figs. 3 and 4,
then the cold-producing vapour distributed by the regulating cock R through the
coil A will drive out of this tho vapour contained therein which has become warm
while the rime was being melted off the coil. This waru vapour will pass through
pipe b and cock Cinto the coil B, the rime of which has to be melted, and from

page_text: which, after assisting in melting the rime, it is drawn by the pump through pipe e
cock D and the pipe E. When the whole of the warm vapour has been removed, the
cock C is turned one quarter round for causing the cold vapour circulating through A
to pass directly to the pipe E which leads it to the compressor, the cock B being also
turned one quarter so as to enclose the body of vapour contained in the coil B.
rime having been entirely removed from the latter, the position of the cocks is
reversed, and the above described action upon the coils A and B is repeated in the
reverse order.
The
In order to further promote the melting of the rime, the suction pipe of the air
supply fan may have a branch communicating with a room or stoke bold requiring to
be ventilated so as to draw off the warm air therefrom.
Referring now to Fig. 1, 2 & 3, the refrigerating vapour is made to circulate"
alternately through the coils A and B as above described.
The dried air, after having been cooled by contact with these coils, is made to
pass through suitable conduits to a third coil C, through which the refrigerating
vapour circulates continuously.
The air in contact with these surfaces free from rime, will be readily reduced to a
very low temperature. Should, after several hours operation, a slight coating of rime
have formed on the coil C, it may readily be removed by causing warm air to pass
over it from the fan through a branch pipe, the circulation of the refrigerating vapour
being suspended for a short time.
It will be evident that the above arrangement may also be employed in apparatus
where the refrigerating medium is employed in the form of a liquid instead of as a
vapour.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed I declare that what I
claim is
1. The method, substantially as herein described, of causing the heat imparted by
the circulating air to the imprisoned refrigerating medium in the coil that is out of
action to assist in melting the rime from the second coil.
2. The use in combination with the two refrigerating coils working with alternate
action, of a third coil through which the refrigerating medium is made to circulate
continuously and over which the air is made to pass after leaving the other coils in
order to be still further reduced in temperature without the deposit of rime substantially
as herein described.
3. In apparatus such as is referred to in the preceding claims, arranging the air
supply fan so as to draw a supply of warm air in order to melt the rime from the
coils substantially as herein described.
Dated this Sth day of December 1887
ABEL & IMRAY,
Agents for the Applicant.