US539363A

US539363A - Ice-making tank

Info

Publication number: US539363A
Authority: US
Publication date: 1895-05-14
Anticipated expiration: 1912-05-14

Description

(No Model.) y I 2 sheetsl-shee 1 S. W. JOHNSON.

IUE MAKING TANK. No. 539,363. 111,e 1895.

`w L aa', Bw! aa ie y ATZOHNEY. A

nz onlus creas cd.. mmoLy/rno., wAsnmarou, n. c.

- s. W. JOHNSON.

2 Sheets-Sheet 2.

(No Model.) f

ICE MAKING TANK.-

'Patented May 14,1895.

M www4" 8%.

w/TNESSES.-

TN: onlus Prrzns ce.. wo'muwo.. WASHINGTON. n.

Nrn-:p .STATES PATENT OEI-nc.

SAMUEL W. JOHNSON, OE NEWPORT NEWS, VIRGINIA.

ICE-MAKING TANK.A

SPECIFICATION forming part of Letters Patent No. 539,363, dated-May 14, 1895;

l Application filed April 21, 1894. Serial No. 508,517. (No model.) v

To all whom may concern:

Be it known that I, SAMUEL W. JOHNSON, a citizen of the United States, residing at Newport News, in the county of Warwick and State of Virginia, have invented certain new and useful Improvements in Ice-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as Will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain improvements in the freezing tanks of ice-machines, in which the cansor'molds containing the water to be frozen are placed in rows alternating with coils of pipe containing therefrigerating gas, and the remaining spacebeing filled with brine, but more particularly to the novel means employed to circulate the brine.

The objects of the invention, are, rst,`.to provide means by which the brine shall be maintained in constant and rapid circulation; second, to provide means by which the circulation shall be maintained at a uniform rate of speed in every part of the tank; third, to provide means by which the brine shall be circulated with the smallest expenditure of power, and, fourth, to provide means by which the circulating device can be quickly and readily removed from the tank for repairs.

With these' objects in view' the invention consists in the novel construction and arrangement of the various parts, as will be hereinafter more fully described, and specifically set forth inthe claims.

In the acompanying drawings, Figure l represents a vertical section of the freezing-,tank

of an ice-machine provided with my improved circulating device; Fig. 2, a vertical section of the same on line @c of Fig. 1 Fig.. 3, a horizontal section on'kline z z of Fig. l; Fig. 4, a horizontalsection on line y y of Fig. l; Fig. 5, a vertical section on line w w of Fig. l; and Fig. 6, a vertical Section of the freezing-tank, showing applied thereto a modified form of my improved removable propellerwheel.

Referring to the drawings, the numeral 1 indicates a freezing-tank of the usual or ordinary construction; 2, the galvanized-iron cans or molds containing the water to be frozen ;l 3, the coils of pipe through which the refrigerating gas is circulated, and 4 the water-line below which all space in the tank, not otherwise utilized, is filled with strong brine.

The numeral 5 indicates a water-tight false floor, which extends the whole width of the tank and from the front end to Within about .ten inches of the' rear end of said tank. This floor is placed about nine inches above the bottom ofthe tank and is parallel with the same, and is provided near its frontend with ,a circular opening or port 6. A vertical water-tight partition 7, rises from the false door, and, inclosing three sides ofthe circular opening 6, extends lfrom side to side of the tank. The three sides inclosing'saidbpening and the front wall of the tank form awell for the propeller wheel, to be hereinafter described. In the partition 7, opposite each space between the rows of cans ory molds, is a port S, through which the brine returns to the front of the tank, aswill be hereinafter explained.

The pu'meral 9 indicates three' partitions, situated between the false floonand the bottom of the tank and dividing the width space into substantially four equal parts. The center partition extends from one end of the tank to the other, while the other two extend from the rear and before freezing the front ends converge and are united by a lateral partition, which crosses the center partition, directly beneath the circular opening or port 6, as shown in Fig. 4. By means of this construction of the two outside partitions more brine is delivered to the two outside spaces than to the middle ones. Between the lateral partition andthe front lwall ofthe tank, the center partitionA Q is provided, on opposite sides, with a deflecting-board. 10, kset at an'angle of forty-tive degrees the lateral partition being also provided with a similar deflecting-board l1. These deflecting-boards, being arranged directly beneath the opening or port 6, serve to deflect or change the course of the water, forced down through saidopening or port, from a vertical to a horizontal course. De-

ICO.'

mit

the wheel is journaled stationary.it is neces-` sary to draw the brine in order to obtain access to the wheel to make repairs, thus caus in g considerable loss.

The numeral 2O indicates a space atthe rear of the tank, not covered by the false iioor, said space being divided into four ports 21 by the= partitions 9. Through these ports the brine, forced `under said floor and between said :partitions rises and iiows between the cans or molds.

In the modification, shown Yin Fig. `G, the movable frame 13 is dispensed with, the upper end ofthe shaft 17 being journaledrina box secured to a truss-timber 22, of the roof.

and the lower part :in a box secured to `a bridge-tire, 23, in thetank. To prevent `undue strain on the shaft, the propeller-wheel is brought as near as possible to the lower journal-box, and the opening or port 6 is cased up about half way between thelfalse floor and-the brine-line. The shaft and wheel is readily removable, and the circulation is effected equally as well with the "propellerwheel arranged as just described as with the one previously described. One of the great advantages of this method of circulation, is that the `brine is not lifted but simply circulated, the only power required `being that which is simply necessary to overcome the friction of the brine passing through the ports, which power is very small compared to the loss of friction in the brine pumps, in common use, which, being outside of the tank, constantly absorb heat while the herein described circulating device, being inside of the tank, causesno loss in temperature.

The operation of the device is as follows: Power being applied rto the pulley,from the compressor (not shown) or other suitable source, the propeller-wheel is set in motion. The brine is forced down through the port 6 and being divided into fourcurrents by the partitions 9, pass up through theports 2 l and is delivered evenly across the whole end ofthe tank. By meansof the deiiectors the flow of the descending currentis materially assisted to a horizontal tiow, and `thebrine asit rises through said ports 21 flows between `the cases or molds, absorbing theuheat from the water contained therein, which `heat `is in turn absorbed from the brine by the refrigeratin g gas in the coils. The brine returns-to thepropeller-wheel through` the `ports 8,the depth of which iit will be observed,increases in proportion to their distance Vfrom the propellerwheel. This is intended to compensate .for the loss of friction caused by the brinepass- Aice inlregnlar rotation, commencing with the first row across the end of the tank. Much delaylandannoyance is caused by the water in all of the cans or molds, in the same row, not being frozen at the same time, and regui `lar freezing can only be secured by means of a uniform circulation of the brine.

ln very large tanks it might be necessary to use two or more wheels, in which case, the entire arrangement could be duplicated.

`I am .aware that propellenwheels have heretofore been used to circulate brine, and therefore do not `broadly claim `it Ain combination with a freezing-tank, but What I doclaim, and desire .to secure by Letters Patent, .is-r

l. Inan icemachine,ra refrigerating-tank constructed with a falsefbottom, which is situated above the bottom proper and provided, near the front end with a port to admita downward current of brine, and at `the rear end with atransverse openingor space to allow the current of brine to escape upward, said tank being divided `intoa series of 1ongitudinal brine `chambers extending from the rearof the tank and communicating with the port in the false floor, whereby the brine is evenly and uniformly distributed, substantially as specified.

2. In an ice-machine, a freezing-tank having a false bottom `provided with a port to admit a current of brine, anda transverse opening `to permit the escape of said brine, and a series of longitudinal vertical partitions,forming brine channels, said partitions so arranged and connected at their forward ends that the descendingcurrent of brine will be distributed into 4each channel, substantially as specified. i

3. In an ice-machine, the combination, with a freezing-tank having afalse floor, substantially as described, watertight .partitidrn rising from said `falseiioor and extending across the front end of the tank, as described,.said partition so arranged as to form,in connection with the front end of the tank,.awell aroundfthe circular opening or port in the false floor.

4:.'In an icemachine, a freezing-tanklpro vided with a falseoor and cross partition ,substantially as described, a port arranged'in the upper part of said partition,opposite reach spacebetween the rowsof pans, throughwhich ports brine` is vadmitted tothe chamber formed betweenthe partition and theend of the tank.

5. `In anice machine, a freezingtank, provided with a false floor and cross partition,su`bstantially,as=described, a seriesiof portsnear the upper fpartof said partition, the ports on eachsideof 4the middle uport being success sase 3:,

ively deeper as the distance from the center increases. t

6. In an ice machine, the freezing-tank provided with the false floor 5 and having the

ports

6 and 21 in combination with the partition 7 having the ports 8, as and for purposes set forth.

7. In an ice machine, the combination, with the freezing-tank provided with a well, of an upright shaft carrying at its lower end a propeller wheel, and journaled in bearings secured to a movable frame, suitably supported in said Well, whereby the shaft, wheel, and frame can all be lifted out of the well, for repairs or other purpose, and returned to the same, as specified. v

8. In an ice-machine, the combination, with the freezing-tank having a false ioor provided with ports at each end, for the passage of the brine, a series of vertical partitions, placed longitudinally beneath said toor, and a vertical partition, rising from the false iloor and provided with a series of ports, of a propeller- Wheel, mounted on a movable frame situated in the well, formed by the vertical partition and the front Wall of the tank, substantially as specified.

9. In an ice-machine, the combination, with the freezing-tank, having avfalse floor provided with suitable ports at the front and rear, a series of longitudinal vertical partitions, as described, and a transverse vertical partition forming, with the front wall of said tank, a central Well, and provided with a series of ports, of a circulating device located in said Well, whereby the -brine is caused to circulate freely and evenly throughout the tank, sub stantially as specified.

10. In an ice-machine, the combination,witl1 the freezing-tank having the false floor provided with

ports

6 and 21, the partition 7 pro# vided with ports 8, and the partitions 9 provided with deilectingboards, of a circulating device consisting of a propeller-wheel 18, shaft 17 journaled in a movable frame, the movable 45 frame 13, and the sustaining collars 16, substantially as specified.

In testimony whereof I affix my signature in the presence of two witnesses.

SAMUEL W. JOHNSON.

Witnesses:

CLARA L. JOHNSON, ELLEN A. JOHNSON.