US2247514A

US2247514A - Center vent double flow coil tower

Info

Publication number: US2247514A
Application number: US346765A
Authority: US
Inventors: Leon T Mart
Original assignee: Marley Co LLC
Current assignee: Marley Co LLC
Priority date: 1940-07-22
Filing date: 1940-07-22
Publication date: 1941-07-01
Anticipated expiration: 1958-07-01

Description

ZRMLEM July L i941. L.. T. MART CENTER VENT DOUBLE FLOW COIL TOWER Filed July 22, 1940 3 Sheets-Sheet 1 INVENTOR.

A OHNEY;

f W M n w N l Y Fuly l, R41.. L. T. MART l CENTER VENT DOUBLE FLOW COIL TOWER Filed J111y`22, 1940 5 Sheets-Sheet 2 QM mwmvwNM.

INVENTOR. `Qa/7 TMa' T RNEYg ,I Html'. will" www [Ilfwlllml uy E, L L, T MART. l ZWEK@ CENTER VENT DOUBLE FLOW COIL TOWER Filed July 22, 1940 5 Sheets-Sheet 3 INVENT OR.

Patented July 1, 1941 2.247,514 CENTER VENT DOUBLE FLCVV COIL TOWER Leon T. Mart, Mission Township, Johnson County,

` Kans.,

assignor to The Marley Company,

Kansas City, Kans., a corporation ot Missouri Application July 22, 1940, Serial No. 346,765

(Cl. E61-11) Claims.

This invention relates to cooling towers and has for a primary object the provision of a tower wherein not only is the temperature of water lowered, but a plurality of coils are cooled by the action of such water after it has been initially acted upon lby currents of air having paths of travel greater than the length of the path of travel through which the water has fallen prior to its introduction to said coils.

One of the important aims of the instant invention is the provision of a cooling tower preferably of the induced draft type, wherein the body is relatively long, wide and. low to effect economicl water distribution, `simplicity of operation, high eiliciency, and relatively low maintenance and operation cost.

A still further aim of the present invention is to provide a cooling tower of the induced draft type that has set oi in the casing thereof, two distinct compartments arranged one above the other, the upper compartment being bottomed by a water collecting tray beneath which and in the lower compartment, is disposed a plurality of coils arranged in banks to be wetted by water escaping through spray he'ads in the bottom of the tray.

Another important object of this invention is the provision of a cooling tower of the aforementioned character wherein is provided means for controlling the amount of Water passing from the tray to any one of the banks of coils in the lowermost chamber thereof.

This invention has for a yet further aim the provision of a cooling tower having two distinct horizontal compartments, both of which communicate with an air discharge chamber, the air from one of said compartments being controlled by a valved port.

Heretofore, cdoling towers have assumed proportions and been constructed so that the travel of a large amount of' air through short paths intersecting long paths of travel of Water, have necessitated heavy equipment, such as motors and pumps to lift the water to high points of distribution from whence it gravitatedthrough the short horizontal air currents. It has been found by actual experience and commercial tests that less air per givenvolume of water is needed tageous results that are obtained from cooling towers having proportions similar to those show n in the accompanying drawings, further advantages arise from such cooling tower because the same permits more compact arrangement of com ponent parts, simplified framing and bracing to meet design stresses, better proportioning for good appearance, and greater ease and safety in maintenance work.

More specific objects of the invention will ap.

pear during `the course of the Yfollowing specification, referring to the accompanying drawings wherein:

Figure 1 is a vertical longitudinal sectional view through a cooling tower made to embody the present invention.

Fig. 2 is an irregular horizontal sectional view I illustrating a means for controlling the entrance of water into one of the ncovers above a tube bank.

The casing for this center vent double flow coil toweris of conventional nature and has heretofore been employed in a manner illustrated in my United States Letters Patent No.v 2,191,938, issued February 2'?, 1940.

A water distribution basin 6 at the top of the tower cooperates with side walls B ateach of two opposite sides thereof, and a collecting chamber I0 at the bottom to produce ahorizontal air guiding conduit. f

Vertically spaced decks I2 below basin 6 extend from louvres I4 at one end of the air guiding conduit to a zone of connection between a I discharge chamber I6 and the aforesaid horlzontal conduit. This horizontal conduit I8 is relatively long with respect to the distance between collecting tray 20 and basin 6.

Basin 6 has openings formedthrough the bot tom thereof into which are .fitted spray heads 22 of conventional type, whereby water is allowed to flow from lbasin 6 downwardly through horizontal conduit I8, over decks I2 and into collecting tray 20. Air discharge chamber I6 has an upwardly directed mouth 24 wherein is dis posed fan 26 driven by motor 2B.

The double dow type of tower. illustrated in the accompanying drawings, is desirable so far as fan 26 is concerned because said fan serves to force air through a plurality of horizontal conduits I8.

Partition 29 extends from immediately below fan 2B downwardly to collecting basin It to insure that any atmospheric air currents, due to wind conditions, will not pass horizontally through one air guiding conduit i8 into the other. Partition 29 will divert upwardly any air entering discharge chamber it.

Baiiie elements 30 are positionedwithin discharge chamber I6 to divide the latter into two portions, one of which overlies a part of collecting tray 20, while the other part is beneath fan 25. Elements 30 serve to eliminate water from the air passing therethrough toward fan 26 and also operate to produce a uniform ilow of air horizontally through conduit i8 between decks l2. Any water removed from the air currents by baille elements 30 will gravitate into tray 20. Tray sets oli a lower compartment dll and extends to a point spaced from partition 29.

A vertical wall projecting upwardly from the inner end of tray 20 assists in creating port 36 through which air passes from lower compartment 40 to discharge chamber I6. Damper 38 is mounted in port 36 so that the operator may f time.

Tray 2Q is provided with a number of openings therethrough into which are fitted spray heads or the like 32, through which passes the water after it has been collected ln tray 20 and after it has been permitted to iiow into vone of the covers, hereinafter more fully described.

Water from collecting tray 20 drops by gravity onto decks d2 where it is broken up into finely divided form for better heat transfer and'to thoroughly cover condenser tubes llt disposed in lower compartment Ml. The falling water enters basin l@ and iiows into sump d6 from where it may be pumped directly to a point of re-use or back to water distribution basin B at the top of the tower.

The spray heads and openings into which the same are fitted, are divided into groups, as shown in Fig. 2. Each group of spray heads 32 is conned within a cover 60 that cooperates with the bottom of tray 20 in forming box-like receivers for water that is intended to fiow downwardly through spray heads 32 and onto condenser tubes M. 'Iubes M are arranged in banks, as illustrated in Fig. 4, and each bank of tubes is wetted by water falling through spray heads 32 beneath a cover 60.

Water is allowed to enter the covers Sill only through an inlet opening 62, the size of which is controlled by a valve head 54 mounted upon rod S6. This rod 66 is screw-threadedas at 6B and has a handle 10, one end thereof which projects outwardly from one end of the cooling tower. The inner end of rod 66 is slidably mounted in a bearing 'l2 so that upon rotation of rod 66, valve head 64 will move toward and from a position closing opening 62. Thus, as shown in Fig. 4, one cover 60 may be closed entirely to preclude the flow of water downwardly onto a bank of condenser tubes while the other covers may have :mantray a desired amount of water passing therethrough to wet the underlying condensertubes to the required degree.

The amount of air pulled through lower compartment t0 by fan 26 may be increasedwhen all of the banks of condenser tubes M are being cooled. Fan 2S is common to both upper and lower compartments in the cooling tower and the degree at whichthe water in lower compartment t@ is cooled, is due to the volume 'of air drawn therethrough by fan 26. After .the water has been initially cooled by passing downwardly through decks l2, it may remain at a temperature desirable for commercial use in engines, for example, even after it has functioned to cool condenser tubes lli. The amount of air therefore, which is allowed to pass through port 36, will have to be varied in accordance with the work required of the water as it passes over the several banks of condenser tubes 4t.

If all of covers 60 are closed, overflow pipes sump la to water distribution basin B may be through a pump 52 of known type. Obviously, this water from sump 46 may be passed through commercial equipment prior to its return to basin Having thus described the invention, what is! claimed as new and desired to be secured by Letters Patent is: Y

1. In a cooling tower of the character described, a casing formed with a discharge chamber and having the top, bottom and sides thereof closed to form a horizontal air guiding conduit in communication with the dischargeV chamber; water distributing means for discharging Water at the top of the conduit for gravitating downwardly therethrough; a fan in the discharge chamber for forcibly propelling air through the conduit; a water collecting tray vertically spaced above the bottom of the conduit, provided with downwardly directed openings and setting off an upper and lower compartment in the conduit; a

water collecting basin at the bottom of said con-r .spaced above the water in said collecting basin and below said tray to be wetted by the water falling from the tray to the basin; and a pump for returning water from the basin to the said water distributing means at the. top of the conduit said openings in the tray being arranged in groups above each bank of condenser tubes respectively, each of said groups of openings having means for controlling the ow of water through all the openings thereof.

2. In a cooling tower of the character described, a casing formed with a discharge chamber and having the top, bottom and sides thereof closed to form a horizontal air guiding conduit in communication with the discharge chamber; water distributing means for discharging water at the top of the conduit for gravitating downwardly therethrough; a fan in the discharge chamber for forcibly propelling air through the conduit; a water collecting tray vertically spaced above the bottom of the. conduit, provided with downwardly directed openings and setting ofi an upper and lower compartment in the conduit; a water collecting basin at the bottom f said conduit; condenser tubes in the lower compartment spaced above the water in said collecting basin and below said tray to be wetted by the water falling from the tray'to the basin; means for controlling the flow of water downwardly through the said tray; and a pump for returning water from the basin to the said water distributing means at the top of the conduit said means for controlling the ow of water downwardly through said tray comprising a number of covers each above a group of openings respectively and each having a valved inlet opening at one side thereof to allow water to ilow into the cover and seek its level when the valve is open.

3. In a cooling tower of the character described, a casing formed with a discharge chamber and having the top, bottom and sides thereof closed to form a horizontal air guiding conduit in communication with the discharge chamber; water distributing means for discharging water at the top of the conduit for gravitating downwardly therethrough; a fan in the discharge chamber for forcibly propelling air through the conduit; a water collecting tray vertically spaced above the bottom of the conduit, provided with downwardly directed openings and setting off an upper and lower compartment in the conduit;

' a water collecting basin at the bottom of said conduit; condenser tubes in the lower compartment spaced above the water in said collecting basin and below said tray to be wetted by the water falling from the tray to the basin; and a pump for returning water from the basin to the said water distributing means at the top of the conduit, said water collecting tray having a plurality of covers overlying certain groups respectively of the openings therein, said covers being provided with means for allowing a predetermined amount of water to pass through the respective underlying openings.

4. In a cooling tower of the character described, a casing formed with a discharge chambei' having the top, bottom and sides thereof closed to form a horizontal air guiding conduit in communication with the discharge chamber; water distributing means for discharging water at the top of the conduit for gravitating downwardly therethrough; a fan in the discharge chamber for forcibly propelling air through the conduit; a water collecting tray vertically spaced above the bottom of the conduit, provided with downwardly directed openings and setting oi an upper and a lower compartment in the conduit;

a water collecting basin at the bottom of said conduit; condenser tubes arranged in segregated banks in the lower compartment spaced above the watr in said collecting basin and below ber and having the top, bottom and sides there- `oi? closed to form a horizontal air guiding conduit in communication with the discharge chamber; water distributing means for discharging water at the top of the conduit for gravitating downwardly therethrough; a fan in the discharge chamber for forcibly propelling air through the conduit; a water collecting tray vertically spaced above the bottom of the conduit, provided with downwardly directed openings and setting oil? an upper and a lower compartment in the conduit; a water collecting basin at the bottom of said conduit; condenser tubes in the lower compartment spaced above the water in said collecting basin and below said tray to be wetted by the water falling from the tray to the basin; a plurality of vertically spaced splash decks in the air guiding conduit above the collecting tray; a pump for returning waterfrom the basin to the said water distributing means at the top oi the` conduit; and a valved port establishing' the only means of' communication between the lower compartment and the discharge chamber.

6. In a; cooling tower of the character described a casing formed with a discharge chamber and having the top, bottom and sides thereof closed to form a horizontal air guiding conduit in communication with the discharge chamber; water distributing means for discharging water at the top .of the conduit for gravitating downwardly therethrough; a fan in the discharge chamber for forcibly propelling air through the conduit; a water collecting tray vertically spacedabove the bottom of the conduit, provided with downwardly directed .openings and setting olT an upper and a lower compartment yin the conduit; a water collecting basin at the bottom of said conduit; condenser tubes in the lower compartment spaced above the water in said collecting basin and below said tray to be wetted by the water falling from the tray to the basin; a plurality of vertically spaced splash decks in the air guiding conduit above the collecting tray; a pump for returning water from the basin to the said water distributing means at the top of the conduit; a port establishing the only means of communication between the lower compartment and the discharge chamber; a valve in said port; and means for setting the valve to cause a predetermined amount; of air to pass to the discharge chamber from Vthe lower compartment.

'7. In a cooling tower of the character described a casing formed with a discharge chamber and having the top, bottom and sides thereof closed to form a horizontal air guiding conduit in communication with the discharge chamber; water distributing means for discharging water at the top of the conduit for gravitating downwardly therethrough; a fan in the discharge chamber for forcibly propelling air through the conduit; a water collecting tray vertically spaced above the bottom of the conduit, provided with downwardly directed openings and setting oi an upper and a lower compartment'in the conduit; a water collecting basin at the bottom of said conduit; condenser tubes in the lower compartment spaced above the water in said'collecting basin and below said tray to be wetted by the water falling from the tray to the basin; a plurality of vertically spaced splash decks in the air guidingconduit above the collecting tray; a pump for returning water from the basin to the said water distributing means at the top of the conduit; and a valved port establishing the only means of communication between the lower compartment and the discharge chamber, said discharge chamber having baille means therein beow of air horizontally and in substantially uniform volume in parallel streams across the entire deck areas. y

8. In a cooling tower of -the character described, a casing formed with a discharge chamber and having the top, bottom and sides thereof closed to form a horizontal air guiding conduit in communication with the discharge chamber; water distributing means for discharging water at the top of the conduit for gravitating downwardly therethrough; a water collecting tray vertically spaced above the bottom ci the conduit, provided with downwardly directed openings and setting off an upper. and lower compartment in the conduit; a waterv collecting basin at the bottom of said conduit; condenser tubes arranged in horizontally spaced -apart banks in the lower compartment spaced above the water in said collecting basin and below said tray to be wetted by the water falling' from the in communication with the Adischarge chamber; water distributing means for discharging water at the tcp of the conduit for gravitating downwardly therethrough; a fan in the discharge chamber for lforcibly propelling air through the tween the said decks andv said fan to equalize the conduit; a water collecting tray verticauy'spaced above the bottom of the conduit; provided with downwardly directed openings andsetting. off an upper and lower compartmentin the conduit; a water collecting basin at the bottom of said conduit; and condenser tubes arranged in horizontally spaced apart banks in the lower compartment spaced above the water in said collecting basin and below said-tray to be wetted by the water falling from the tray to the basin,I

said openings in the tray being arranged in groups above each bank of condenser tubes respectively, each of said groups of openings having means for controlling the iiow of water through all the openings thereof.

10. In a cooling tower of the character described, a casing formed with a discharge chamber and having the top, bottom and sides thereof closed to form a horizontal air guiding conduit in communication with the discharge chamber; water distributing means for discharging water at the top of the conduit for gravitating downwardly therethrough; a water collecting tray vertically spaced above the bottom of the conduit, provided with downwardly directed openings and setting .off an upper and lower compartment in the conduit; a water collecting basin at the bottom of said conduit; and condenser tubes arranged in horizontally spaced apart banks in the lower compartment spaced above the water in said collecting basin and below said tray to be wetted by the water falling from the tray to the basin, said openings in the tray being arranged in groups above each bank of condenser tubes respectively, each of said groups of openings having means for controlling the iiow of water through all the openings thereof,

LEON T. MART.