US425316A - Process of distilling water - Google Patents

Description

(No Model.)

' A. GERDES 8: B. THOENS. PROCESS OF DISTILLING WATER;

No. 425,316. Patented Apr. 8. 1890.

I jarazaz'elflomw MWZW UNITE STATES ATENT AUGUST GERDES AND BURCHARD THOENS, OF NEXV ORLEANS, LOUISIANA.

PROCESS OF DISTILLING WATER.

SPECIFICATION forming part of Letters Patent No. 425,316, dated April 8, 1890.

Application filed April '7, 1887- Serial No. 233,988. (No model.)

To all whom it may concern:

Be it known that we, AUGUST GERDES and EURGHARD THOENs, subjects of the Emperor of Germany, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented new and usefullmprovements in the Process of Distilling Water, of which the following is a specification.

In absorption ice-machines it is customary to free the water from air prior to exposing the water to the refrigerating process in the usual freezingcans for the purpose of producing clear and transparent ice-blocks.

In apparatus for depriving the distilled water of air serious objections exist, in that as the coils through which the steam to be condensed passes are immersed in boiling water the temperature of which is too high to condense any amount of steam a large part escapes uncondensed, and hence imperfect condensation is the result; further, a large quantity of water is always kept boiling, and consequent-1y much of it evaporates, and, finally, it is inconvenient to accumulate large quantities of distilled water, which if left standing in tanks will reabsorb air and become unfit for making transparent ice free from a milky appearance.

The object our invention is to avoid the above-mentioned objections and provide a convenient method of depriving distilled water of air for the manufacture of clear and transparent ice.

Figure 1 is a sectional elevation of a convenient apparatus for carrying our invention into effect, and Fig. 2 a detail plan view of the final condensing tank and coil.

In order to enable those skilled in the art to make and use our invention,we will now describe the same in detail, referring to the drawings, where- The letter a indicates the boiler or retort of an ordinary absorption ice-machine, and b is the steam-coil therein, having its inlet at c. The pipe (I, forming the coil in the boiler, rises and enters a heating-tank f, in which it is formed into a coil e, and then rises and is extended into another heating-tank hnvhere said pipe is formed into a coil g. The steanrcoil e g, it will be seen, is continuous through the two co nmu nicaiin g tanks f and 72 whereby we utilize the sensible heat of the steam to boil the water in the first open tank f, and the latent heat to heat the water in the second water-tan k h below the boiling-point, whereby 5 5 the coils a, c, and g, is also provided vwith a cock Zdirectly outside the second tank h. The valved pipe 7' is designed to connect with a steam-boiler should it be desirable to condense steam direct from such boiler without passing it through the coil 1) in the retort a.

The tanks f and h are arranged side by side on a suitable support or flooring and are connected by a tube m, while the tank f is connectcd by a tube n with a cooler 0, comprising, as here shown, a shell and vertical tubes. The cooling-fluid enters by the pipe 12, while the distilled water from the tank f enters the cooler by the pipe or and escapes at q in its cooled condition to be delivered to the freezing-cans of the ice-machine. The steam entering the coil b at c is partly condensed, and a mixture of steam and hot distilled water passes through the pipe (1 to the coil 0, thence to the coil 9 and to pipe 1, which delivers the same into the tank h,tr0n1 which it passes through tube or into the tank f. The steam which comes with water from the coil 1) boils the condensed water in the tankf, and by this boiling the air is expelled; but as the coil 6 is submerged in hot water in the heating-tankf all of this steam is not condensed and some passes in coil g, submerged in the heatingtank h, where it is finally all condensed and flows as distilled water through the branch pipe 1 into the tank h. The passage of some 5 steam and hot water through the coil g maintains the water in the tank h near its boilingpoint. By this arrangement a small amount of water only is kept boiling in the tank f, all the steam is condensed, andalarge amount of water is kept hot. If the water in the tank h is so hot as not to condense all of the steam,

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tilled water from the coils into such tank or tanks h all steam will be condensed and a larger amount of water will be kept hot.

Should the operation of the ice-machine stop for any length of time and a large amount 1 of distilled water accumulate, which in becoming cool reabsorbs air, this water still can be used, because all water which is drawn oif at the discharge-pipe q is compelled to flow through the tank f, where it is boiled and the air expelled as soon as the machine is set in operation again. The cost of the apparatus 1 is thereby greatly reduced, as the accumulated distilled water can be kept in open tanks instead of in expensive air-tight vessel's.

WVe are aware that in ammonia-gas nia-, chines the condensed water has been boiled 1 by steam in an open tank and cooled before 5 using, so that the steam parts only with its sensible heat, as in Letters PatentNo. 230,025. 1 We are also aware that in ammonia-gas machines the steam has been condensed by cold water flowing over the steam-coil, so that the cold water carries away and .wastes the sensible heat of the steam, as in Letters PatentNo. 214,161. Such, therefore, we disclaim as not of our invention.

Having thus described our invention, what we claim is The method herein described of depriving condensed Water of air for the manufacture of transparent ice, which consists in carrying a mixture of steam and hot condensed Water through connected hot-water tanks, boiling the water in the first tank by the passage therethrough of the said steam and water, heating the Water in the second tank in a similar Way, discharging into the latter the condensed Water from-the steam-pipes, returningthe said water to the first tank, and finally carrying the boiled water to the cooler and thence to the ice-cans, substantially as described.

In testimony whereof we affix our signatures in presence of two witnesses.

' AUGUST GERDES.

iUROHARD TFIOENS. Witnesses:

FREDERIO COOK, GEO. MONTGOMERY.

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