US698013A

US698013A - Cooling-tower.

Info

Publication number: US698013A
Application number: US7875201A
Authority: US
Inventors: William H A Halsall; Samuel Lapham
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-10-15
Filing date: 1901-10-15
Publication date: 1902-04-22
Anticipated expiration: 1919-04-22

Description

No. semola.

'w. H. A. l'mLsMl.Y & s. LAPHAM.

' Patented-Apr. 22,1902.

(No man.)

(Application Bled Oct. 15, 1901.)

3 Sheets-Sheet 2.

m: mams sirens co.. vommnol. wAsnmsrom uicA No. 698,013. 4 Patented .Ap. v2, |902,

` w. H. A. HALsALL a s. LAPHAM.

`(IOOLlNl' TOWER.

(Application led Oct. 15,A 1901.) v (No Model.) v 3 SheetsTSheet 3.

THE NoRRls PETERS so., Pnomuku. WASHINGTON. o. c.

i UNITED STATES PATENT OEEICE."

WILLIAM H. A. HALSALL AND SAMUEL LAPHAM, OF CHARLESTON, SOUTH CAROLINA.

COOLING-TOWER.

SPECIFICATION forming part of Letters Patent'No. 698,013, dated April 22, 1902.

' Application nea october 15,1901. serial No. *fatta or@ model.)

f To @ZZ whom it may concern:

f fre'ely through the same. 'tower is covered by a roof 2. In the base of Be n known that we, WILLIAM H. AQHAL- SALL and SAMUEL LAPHAM, citizens of the United States, residing at Charleston, in the county of Charleston and State of South Car# olina, have invented a new and useful Cooling-Tower, of which the followingis a speci` iicaton. This invention is an improved coolingtower, especially designed for lowering the temperature of the cooling-coils of an icemaking plant for cooling an acid or liquefying ammonia or other gases; and it consists in the peculiar construction and combination of devices hereinafter fully set forth and claimed. In'the accompanying drawings, Figure lis a vertical sectional View of acooling-tower constructed in accordance with this'invention, showing the same in connection with a Glover tower from which acid is discharged through the cooling-coils in the base of the cooling-tower for lowering the temperature of the acid and showing also a portion of an acid-tank into which the'cooled acid vis discharged from the cooling-coils. Fig. 2 is a vertical sectional view taken on a plane at right angles to that of Fig. l. Fig. 3 is a detail sectional view showing the construction of the evaporatings'teps Fig. 4 is -a vertical sectional view of a modified form of the im'- proved vcooling-tower, showing the same inV ture in an ice-making plant, wherein the cool ing-tower is employed specificallyfor the pur# pose of lowering the temperature of coolingcoils for cooling an acid `orliquefying ammo# nia or other gases. Referring specifically to .the form of theinven'tionshown inFigs.v l

and 2, the tower l is an openstructure 'coinprising a suitable framework and OPQII on al1 sides to the atmosphere,so' that air can pass The top of the the tower are located the cooling-coils 3. For

the purposes of illustration a portion of a to the mud-pit B of ysaid Glover tower and discharges into an acid-tank C. In the roof of the4 tower is an opening 4, over which is disposed a hood 5. A water-pipe 6, which leads from a suitable source of water, as a pump or the like,(not here shown,) entersthe tower near the top thereof and is provided with a spraying-nozzle 7, which is adapted to discharge a shower of water downwardly in the tower, as will be understood. Below the said nozzleis a spreader 8, which is of pyramidal form andthe sides of which are formed by transverselydisposed slats 9, spaced in practice about an inch apart and disposed at an angle ofabout forty-five degrees. 'This spreader serves to break up-and spray the water toward the four sides Vof the tower and to distribute the spray evenly across the tower. Below the said spreader are a series of flights of evaporating-steps 10, which extend to within a suitable distance from the lower end of the tower. fThe said nights are disposed alternatelyfin opposite directions and" traverse the tower and are disposed under each other, so that the water discharged upon the steps of the upper flight from the able elevation. The spaces corresponding to the risers between the steps'or treads of the various iights are open, so that the air is permitted to circulate freely between the said steps and `in contact with the exceedingly y Y thin films of water which pass over the said steps and descend throughoutthe'series there-.f

of, and'it'will be observed by reference 'tov Fig. l of the drawings thatthe films and sprays of water on the steps andbetween the' same and exposedto the direct contact ofthe `air,

so that the waterv is evaporated by theair tol such an extent thatonlyajveryslight quantity or small proportion lof lthe wateridis` charged from the nozzle 7 reaches thetank 11, and such water as reachesthe said tank is, f. f

owing to the extent of the evaporation, greatly lowered in temperature.

IOO

The tower is provided at a pointasuitable l y distance above the cooling-coils with a transversely-disposed inclined deflecting-hood 12, which divides the lower side of the tower from the upper portion thereof that contains the evaporating-steps, and the said hood at its upper side communicates with a flue 13, which leads upwardly on one side of the tower.

Perforated pipes 14 lead from the watertank 11 and are disposed above the coolingcoils. A series of troughs 15 are also provided,which are preferably V-shaped in crosssection, are disposed above the respective coils 3 and below the pipes 14, and are provided in their bottoms throughout their longitudinal extent with series of perforations 16, through which the water discharged into said troughs by the perforated pipes 14 is conducted directly to and upon the cooling-coils, so that the latter are wetted exteriorly throughout their entire extent and protected from corrosion.

The deflecting-hood 12 dellects such heated air as rises from the cooling-coils and prevents the same from passing upwardly through the water films and sprays and raising the temperature thereof, and the .cold water discharged onto the cooling-'coils effectually reduces the temperature of the acid and gases which pass therethrough, as will be understood. All of the evaporating steps are slightly inclined downwardly in the direction taken by the water in descendingin the tower, so that the water drops from the lower side of each step onto the upper side of the next step below throughout the series, thus exposing the water films, drops, and sprays to the evaporating action of the air to the maximum extent and atomizing the drops.

In the form of the invention shown in Fig. 4 the sides of the upper portion of the tower in which the evaporating-steps are disposed are incased, as at 17, and risers 18 are provided, which connect the steps of the respective flights. Each of the latter has an opening 19 at its lower side over the upper side of the next flight below, and hence air taken in through a funnel or duct 2O on one side of the tower is caused to describe a tortuous course upwardly back and forth across the tower between the flights of the evaporatingsteps before reaching an eduction-pipe 2l, which is provided in the roof of the tower.

The refrigerating-tank D, shown in connection with this modified form of the tower, has an inlet-pipe 22 and an outlet-pipe 23 communicating therewith in the usual manner, and said pipes, which conduct liquid at a low tcmperatu re, pass through a duct 24, to which air is admitted, the air in the said duct being` cooled by the said pipe, as will be understood. A pipe 25 leads from the air-duct 24 to the casing of a fan 26, and branch pipes 27 28 lead from the said casing upwardly on opposite sides of the tower and are provided with discharge -nozzles 29, respectively, which discharge-nozzles are disposed alternately between the flights of the evaporating-steps. This fan is driven by an engine, (indicated at 30,) which may be of any suitable construction, and it will be understood that the cold air blown by the said fan 26 is discharged by the nozzles 29 into the tower in such manner that a blast of cold air is caused to pass upwardly over each flight of the evaporatingsteps, so that the sprays and films of water which descend over and from the said steps are exposed throughout their passage downwardly in the tower directly to the evaporat ing action of the said cold blasts of air, and hence the water is evaporated to the maxi mum extent and its temperature lowered not only by the evaporation, but also by the effect of the cold-air blast.

Suitable exhaust-pipes 3l, which connect with the engine and pumps forming elements of the ice-making plant, discharge upwardly in the lower end of the eduction-tube 2l. In this form of the invention the flue 13 is omitted, the hood 12, owing to the fact thatthe up per portion of the tower is incased, being effective to divert the heated air that rises from the coils from the upper portion of the tower. A diaphragm 31 is disposed above the hood l2, thereby forming an air-space which is open at its sides between the said hood and the said diaphragm. The lower portion of the tower, in which the cooling-coils are disposed,is open to the external atmosphere.

What is claimed is- 1. A cooling-tower having cooling-coils in the base thereof, means to evaporate water in the upper portion of the tower, and to dis-V charge cooled water onto said coils, and a de; fiector above the latter, to prevent air heated by said coils from passing into the upper, evaporating portion of said tower, substantially as described.

2. A cooling-tower having means to evaporate water in the upper portion thereof, cooling-coils in the base thereof, means to apply the water cooled in the evaporating portion of the tower to the coils and a deflector above the said coils to prevent heated air from passing into the upper, evaporating portion of the tower, substantially as described.

3. A cooling-towerto which air is admitted, having means to shower water downwardly in the upper portion thereof, a series of descends ing steps to retard the descent of the water and promote the evaporation thereof, means to collect the cooled water discharged from the steps,coolingcoils in the base of the tower, means to discharge the cooled water onto the coils, and a deflector above the coils to prevent heated air from passing into the upper, evaporating portion of the tower, subst-antially as described.

4. A cooling-tower to which air is admitted, having means to shower water downwardly in the upper portion thereof, a series of descending steps to retard the descent of the water lIco and promote the evaporation thereof, coolingour own We have hereto affixed our signatures 1 d coils in the base ofthe tower, a deector above in the' presence of two witnesses. v

n the coils t0 prevent heated air from passing r into the upper evaporatng portion of the Y. Al HALSALL 5 tower, and means to discharge the cooled Wa.- i v ter from-the steps onto the coils, `substanl Witnesses:

tially as described. GEO. C. HASELTON i In testimony that we claim the foregoing as E. T. WITHINGTON.