US1082944A - Ice-making machine. - Google Patents

Description

GRAAFP. ZOE MAKING MACHINE.

APP LIOATION FILED SEPT. 26, 1911.

1,082,944 Patented DecLSO, 1913.

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Be it known that I Wtnenwr Grim-err, merchant; a: subjcotzonthe German Emperor,

and. residing: at? 7 Linlzista'asse, Berlin," 1 1V. G.-, in the" Kin; of: Prussian. Ger-t many, have inventedmertsin new and usetnl Improvements in: Ice-Mhhing Machines,

- of which the following-is a spmification:

The present invention relates toiceanaking machinesand: in particulars-rte such in which the refrigoratingmediumzis expelled from a solution in the one of two. communiv cating, permanently closed andnevacuated v vessels and then condensed in the other of these vesselsandsubsequently again allowed i to evaporate, whereupon the vapors pro-- duced are again absorbed in the first vessel.

The vessel first mentioned, in which. the refrigerating medium isexpelled from a solution or miXtureand-in which it is again-- absorbed shall hereinafter be referred to as the absorber and the second vessel, in.

Which-the cold medium iscondensed and again revaporated shall be referredto as the refrigerator.

A machine of the hereinbefore mentioned type has, for instance, beendescribed in the United States Patent 958,683; The present invention relates to the-special arrangement of the refrigerator in machines of the type mentioned. In, the machines hitherto known the refrigerator Was'either a'smoothtages are avoided in the present invention by the refrigerator being made approximately bell-shaped, as'for instance, providing an outer cylinder surrounding an inner cylinder which 1s open at one end. By varying the diameter of this inner cyl1nder it is possible to make the volume of therefrigerator of any desired size so as to obtain the most. favorable ratio :vbetween the vapor space and the surface of the refrigerator to be cooled, so that ilneo'ificatton'offlettcrs PatehtL Patented Dec. so, rare.

the vapors-passing: from the, absorber to the refrigerator will be rapidly cormtensed. The described arrangementof theretrigen ator will furthermore reduce the liquid space; the liquid preferably only reaching up to the communicating pipe bet-wcenthe refrigerator and the absorber, which allows eta sutiiciently large quantity ofidistillate 1n the refrigerator. In consequence thereof all vapor passing over into'the refrigerator "Wlll be condensed into a liquid form, but all surplus-liquid produced in the refrigerator will flow through the hollow shaft back into the absorber. Where it will be again evaporated, By such means the mixture contained in the absorber can never lee-evaporated beyond a given degree of concentration and an overheating and consequent decomposition of the chemicals contained in the absorber'is impossible, and the efiiciencv of the machine will therefore not beimpaired Further advantages of such bell shaped refrigerators consist in. that it is of simple design and can be easily and surely kept tight, and that both refrigerator and absorbcr may be made' of the same length,

whereby the manufacture of the machine is greatly simplified, The drawing illustrates a constructional form. of the present invention in diagram and parb section.

In this drawing a is the vessel serving as distiller and absorber, b the vessel serving as the condenser and refrigerator. The pipe of forms a means of communication between.- This pipe, which passesthe two vessels. through the absorber a, is provided Within the latter With perforations, so that the vapors can pass freely from a to b or from b to a; The ends of pipe 0 projecting from L) n the absorberrcst 1n stutable bearings 0i", so

that both vessels can be rotated by means of a crank e or any other suitable device. Within \the vesseloc are arranged plates 1,

which are preferably made of a dish-like shape and perforated. These plates serve to promote the conduction of the heat-and the agitating of the absorption liquid, besides increasing the evaporating orabsorbing sure iaces respectively and preventing. the absorbing medium being carried overlnto the condenser.

the free head tvall of the vessel 6 is arranged a second, preferably cylindrical vessel 9' so as to have a'close ]O1Ili3 therewith, and the cavity of the vessel 6 is thereby conmachine is therefore siderably reduced. The ratio between the is therefore impossible for the absorption nation .of a vessel medium in vessel a to be overheated. As

furthermore the vapor space of the refrigerator is correspondingly reduced, the vapor passing over from a will more quickly come into contact with the cool walls of the same, so that the distillation is considerably ac celerated.

In consequence of tho hereinbefore described arrangement of the refrigerator the cooling surface of the same is on the one hand considerably increased, so that during the distillation, process the coolin may be effected simultaneously from insl e in the cavity is and from outside, for instance by means of sprinkler pipes h and i, and on the other hand ice may be produced during the freezing process both within the cavity k and on the outer surface of the refrigerator, for instance in a hood of suitable shape placed over the same.

The invention is not mentioned bell shaped form of the refrigerator, as any other suitable form may be r used to the same advantage.

I lam! j 1'. ant ice-making machine the combivessels being in 'sorber, said I said absorber comprising a plurality of centrally open absorber through said I 'tions, said inner vessel being limited to the above-;

serving as an absorber with a vessel serving as a refrigerator, both axial alinement, and a cooling arrangement for said refrigerator; sai absorber being provided with a hollow axle which extends along its whole length and opens centrally into one end of said refrigerator, said hollow axle having a plurality of radial perforations within the absorber, and a plurality of diaph'ragms in the abdiaphragms having each acplurality, of perforations. f

2. An ice making machine having an absorber and a condenser in axial a'hnement, cylinder with a diaphragms, a1. axiall situated hollow shaft rigidly connected to the cylinder and pro ectmg at both ends thereof, said shaft having radial erforations within the cylinder; external bearings for sai shaft wherein it is mounted to revolve; said condenser being rigidly mounted at one end of said shaft and comprising an outer and an inner vessel forming a'closed chamber between them, saidchamber communicating with the interior of the shaft and its perfora-. open at one end; sprinkling means for the inside of said inner vessel and the outside of said outer vessel, heating means for the absorbenand revolving means for said shaft, whereby the absorber and the condenser may be simultaneously rotated. I

WILHELM GRAAFF,

' Witnesses: I

' LOUIS E. PHILIIBON,

I HENRY HAsPn'a'.

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