US1236927A - Reboiler for ice-machines. - Google Patents

Description

A. B. GBAF.

BEBOILER FOR ICE MACHINES. APPLICATION r1120 11111527. 1911.

1,236,927. 1 Patented Aug. 14,1917.

2 SHEETS-SIIEET I.

B. GRAF. REBOILER FOR ICE MACHINES.

APPLICATION FILED JAN. 27, 19H- Wm F a m -m m M m 5 Am m Mu m m N a an P ANDREW B. GRAY, 0F CINCINNATI, OHIO.

BEBOILER FOR ICE-MACHINES.

Specification of Letters Patent.

Patented Aug. 14,1917.

Application filed January 27, 1917. Serial No. 144,940.

To aZZ whom may conccwi:

Be it known that I, ANDREW B. GRAF, a citizen of the United States, residing at Gincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Reboilers for Ice-Machines, of which the following is a specification, reference being had. to the accompanying drawings.

his invention relates to an. im roved reboiler for ice nnichf and has .or its pri mary object to provide an ap iiaratus of this character whereby the use of live steam for the purpose of reheating or reboiling the distilled water in the Illtin.llllfiilfitflll'fi of arti-- ficial ice, is dispensed with, and the expense incident to the operation of apparatus used in ice manufacture, appreciably reduced.

It is also another important object of: the invention to provide a reboiler for ice machines wherein exhaust steam from the operating engine and miscellaneous pumps used in the process of manufacture is utilized as the reheatingmedium for the water, such exhaust steam'being so delivered to the reboiler as to remove the air from the water, together with'the grease and oil on. the sur-' face thereof, before the water is admitted to the filtersl In the manufacture of clear, artificial ice from distilled water, it is necessary that the water be reboiled to free the air therefrom.

The distilled water is obtained from condensed exhaust steam, and during the sunrmer months when the atmosphere is from twenty to thirty degrees cooler at night than during the day, the condensation of this exhaust steamis much more rapid at night,

so that when the water leaves the condenser,

it is cooled to approximately 180. It is necessary that the temperature of the water again be raised to 212 by reboiling the same with live steam in order to completely free the air from the .water. This is, of course, a relatively expensive operation, and the present invention is devised with a view to obviating the necessity of employing live steam for this purpose and yet obtain a reboiler which will be highly eilicient in operation.

By means of the present invention, the desirable end above referred to is obtained without materially increasing the initial cost of construction of the apparatus.

With the above and otherobjects in view, my invention consists in the novel features of construction, combination and arrangement of parts to be hereinafter more fully described, claimed and illustrated in the accompanying drawings, in which,

F gure 1 is a side elevation of a reboiler for ice machines, illustrating the preferred embodiment of the invention;

Fig. 2 is a longitudinal section thereof;

Fig. 3 is a transverse section taken on the line 3.3 of Fig. 2; and

4: is an'end elevation.

Referring in detail to the drawings, 5 designates a cylindrical tank or boiler which is suitably constructed to safely withstand a pressure of approximately twenty pounds to the square inch. To this boiler and entering through the top thereof, adjacent one of its ends, a steam exhaust supply pipe 6 is connected. In this pipe 6, cxteriorly of the boiler 5, a cruciform coupling head 7 is interposed. A pipe 8 from the condenser '(not shown), extends into this head and then longitudinally into the ipe 6 toward the boiler, and is provided wit a spray nozzle 9. To the lower end of the pipe 6, within the tank 5, a horizontally disposed pipe 10 is connected, said pipe extending longitudinally of the tank 5 and being supported in a suitable hanger indicated at 11. A plurality of spacedejection pipes 12 extend transversely of the boiler 5 and beneath the pipe 10, and are suitably coupled to the latter pipe. Each of these transverse ejection pipes 12 is provided in its lower.

maintainedat this level by means of a float 15 secured upon the stem 17 of a valve 18. This valve is adaptedfor engagementupon its seat .fomned. on the wall of a casing 19 which is attached to the end of a leading to the filter, (not shown). he side walls of this casing are provided with openings so that the water may freely enter within the same. A rod 21 also extends upwardly from the float 15 and is movable ipe 20 through a housing 22 mounted upon the top witl'rjj'the desired water level within the "boiler, and the opening of the valve 18 with relation to the water-level, redetermined. The upper end of the rod, 2 is covered by :a removable cap 25 threaded upon the wall of thehousing'22. A suitable gage glass indicated at 26, is mounted upon one end ,the boiler 5 so that the level of water within] the boiler may be athll times ascertained.

A pipe 27 connects the boiler 5 to the condenser to carry oil the surplus exhaust steamlt'o be condensed, and the water there'- from delivered through the pipe 8 into the exhaust steam supply pipe 6. An air outlet valv 28 is also mounted in the top wall of a the boiler 5 to release the air collecting in the upper portion of the boiler which is not a blown out by the steam jets over the dam l4 and through the dram pipe 29 which 6 leads'to the sewer. If all of the air does not escape in this way, it will find an outlet through the air valves of the condenser.

engine and pumps is delivered'through the pipe 6 into the feed pipe 10, from which it enters the ejection pipes 12. The steam is delivered from the latter pipes through the angular ports or openings 13 under con-- the upper ed siderable pressure, against the surface of the water contained in the boiler. The

. steam blowing over the surface of the water removes all oil or ease which runs over? of the skimming dam 14 into, the end of t e boiler and out through the drain ipe 29. When the water in the boiler is at t e predetermined level, the float valve,

18 opens automatically and allows a certain uantity of the water to escape through" the pipe 20 to the filters. The steam leavesthe tank 5 through the pipe 27, from which,

- itJis delivered to the condenser, the conv -y'densed water running back; through the f pipe 8 from the condenser and being sprayed into the ipe 6 to be there highly heated" by the ex aust steam and carried with the; .T fsteam into the pipes 12.

densed water, when deliveredthrough the 7 ports 13 to the boiler 5, is at a boiling tern-.

perature, and the air is released therefroinf to be exhausted through the valve 28 or escape through the pipe 27 to the condenser. From the foregoing description, taken in connection with the accompanying draw ings,.the construction, manner of operation and several advanta es of my invention will be clearly and ully understood. By avoiding the necessity of maintainin "a separate supply of live steam to the rebo1 er, I have demonstrated in practice that the "Letters Patent is:

-ming 2. In a'reboiler a, tank,- a'pipe connection Thus, the can.

cost of maintenance and operation of ice vmaking machines of this character can be materially reduced. At .thesame time, it

will be observed that the construction of the reboiler is not unduly complicated, but on the'other hand, is relatively simple and 'its initial manufacturing cost will, therefore, be comparatively small. The tank or boiler 5 can, of course, ,be made of any desired capacity, and; while I have shown a particular mounting-and arrangement of the float valve herein referred to, this, feature of the device might be variously modified 1 and valves ofother types substituted thereto =to'1control the'rintermittent flow of water from the reboiler to the filters. The inven"-' tion is also susceptible Off various other modifications in the form, proportion and arrangement of its several parts and I, therefore, reserve the privilege of ado ting all such legitimate changes as may be iizirly invention-as claimed.

Having thus fully described my invention, what I desire to claixn'andsecure by 1.:A reboiler'for ice making machines includinga tank, an, outlet pipe connected to I 'In operation, the exhaust steam from the ing the outlet toimaintain a predetermined water level within the tank, a skimming dam within said tank, and means for de l vermg exhaust steam m en-angular direction upon-the surface of the water to direct the grgase and oil'therefrom overthe skimami.

to one end ofthe tank, an automatic valve normally closing said pipe to maintain a predetermined water level in the tank, a

embodied within the spirit and scope of the skimming :dam arran ed in the tank adjas P cent its opposite en a drain pipe connected to the latter end of the tank, an exhaust steam supply pipe connected to the tank, a water pipe connection between said supply plpe and the condenser, means for deliveringthe exhaust steam and the con-' 7 densed. water upon the surface ofthe water in the tank at an anglewith respect thereto to cause foreign accumulations on the surface of the water to flow. over .the skim dam, and'a pipe connected'to the tankand leading to the condenser to conduct the ex haust steam to the latter. L

A reboiler for ice makingmachines' *eludi end 0 the tank, an automatic valve nor a" tank, a pipe connectionto one mally closing-said pipe and maintaining the tank, a pipe connec tojsaid' steam predetermined level of water inf-the; tank," J

an exhaust steam supply i y ato 'de iver condensed water into saidpipe; 7 whereby the temperature o'f' the water is raised to the boiling point, and a pluralityof ejection pipes connected tosaid steam supply pipe within the tank todeliverthe boiling water and exhaust steam upon the surface of the water, in the tank.

4.,In a reboiler for ice making machines, a tank, a pipe connection to oneend of said tank, an automaticvalve normally closing said pipe and maintaining the water in the tank at a predetermined level, a skimming dam arranged in the tank adjacent its op-,

posite end, an exhaust steam suppl pipe extending into the tank, a plura ity of spaced delivery pipes connected to the supv, ply pipe and having ejection orifices angularly disposed toward the skimming dam, a pipe extending from a condenser to deliver condensed water into the exhaust steam supply pipe, whereby said water is heated.

to the boiling point and delivered with the exhaust steam from the ejection pipes upon the surface of the water inthe tank, foreignmatter on the surface of the water being directed by th steam jets over the skimming dam, and an outlet pipe for the exhaust steam connected to the tank and lead-- ing to the condenser. I

5. A reboiler for ice making machines including a tank having an outlet at one end, a skimming dam within thetank limiting the water level therein, and means for delivering steamupon the surface of the Wa-' ter to raise the temperature of the water to the boiling point and direct grease and oil from the water surface over the skimming dam.

6. A reboiler for ice makin machines including a tank having an out et at one end, a skimmin dam within the tank limiting the Water level therein, a steam pipe connected to the tank, steamdelivering means within the tank to deliver the steam in an angular direction upon the surface of the water and direct the grease and oil therefrom over the skimmmg dam, and means for discharging condensed steam into the steam supply pipe whereby the same is highly heated prior to its delivery into the v tank.

7 A'reboiler for ice makin machines including a tank havin an out et at one end, a skimmin dam wit in the tank limiting the water i nected to the tank, steam delivering means within the tank to deliver the steam in an angulandirection upon the surface of the water and direct the ase and oil therefrom over the skimming dam, and means vel therein, a steam pipe con-v for s raying condensed steam into the steam supp y pipe, whereby the condensed steam .is highly heated prior to its delivery into the tank. 4 v 8. A reboiler for ice making machines including a tank, means for maintaining a predetermined water level in the tank, and

means for deliverin a plurality of steam jets in an angular irection upon the surof the water to the boiling point and disface of-the water to raise the temperature charge air, grease oilfrom the water surface.

' 9. A reboiler for ice making machines in- In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

ANDREW B. GRAF. Witnessesz' IIENR! J. FRANZ,

ANDREW J. Gnar, Jr.

Images