US3850595A - Drift eliminator assembly - Google Patents

Drift eliminator assembly Download PDF

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Publication number
US3850595A
US3850595A US00295320A US29532072A US3850595A US 3850595 A US3850595 A US 3850595A US 00295320 A US00295320 A US 00295320A US 29532072 A US29532072 A US 29532072A US 3850595 A US3850595 A US 3850595A
Authority
US
United States
Prior art keywords
side plates
blades
eliminator
liquid
drift eliminator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00295320A
Other languages
English (en)
Inventor
J Forchini
R Garcia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CUSTODIS-ECODYNE Inc
Ecodyne Corp
Original Assignee
Ecodyne Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ecodyne Corp filed Critical Ecodyne Corp
Priority to US00295320A priority Critical patent/US3850595A/en
Priority to CA176,069A priority patent/CA1012455A/en
Priority to ZA734641A priority patent/ZA734641B/xx
Priority to JP48092325A priority patent/JPS4972756A/ja
Priority to DE19732342025 priority patent/DE2342025A1/de
Priority to ES418940A priority patent/ES418940A1/es
Priority to GB4558573A priority patent/GB1414068A/en
Priority to IT52893/73A priority patent/IT996252B/it
Application granted granted Critical
Publication of US3850595A publication Critical patent/US3850595A/en
Assigned to CUSTODIS-ECODYNE, INC. reassignment CUSTODIS-ECODYNE, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ECODYNE CORPORATION A DE CORP
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F25/00—Component parts of trickle coolers
    • F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
    • F28C1/04—Direct-contact trickle coolers, e.g. cooling towers with cross-current only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
    • F28C1/16—Arrangements for preventing condensation, precipitation or mist formation, outside the cooler
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/11—Cooling towers

Definitions

  • This invention relates to drift eliminators for eliminating entrained droplets of liquid from a generally upward flow of gas and more particularly to a novel drift eliminator assembly for use in a mechanical draft water cooling tower for removing water entrained in the air as it flows upward through the tower.
  • the drift eliminator assembly disclosed in copending US. Pat. application Ser. No. 161,029, assigned to the same assignee as the present invention provides an improved drift eliminator assembly including unique drift eliminator blades which efficiently preclude the loss of liquid through the cooling tower air discharge outlet with a minimum of pressure drop in the air stream without substantially interferring with the flow of air through the fill area.
  • the present invention provides a novel support assembly to support the drift eliminator blades, particularly of the type disclosed in theaboveidentified patent application, which permits the efficient removal of the trapped liquid droplets from the blades and directs them into the cold water distribution basin through a series of integral parallel anad inclined drain channels.
  • a further object of the present invention is to provide a drift eliminator panel which when connected to an adjacent drift eliminator panel forms an integral drain channel therebetween.
  • a still further object is to provide a side plate for securing a plurality of drift eliminator blades into a structural panel which when connected to the side plate of an adjacent panel forms an integral drain channel therebetween.
  • Another object of the present invention is to provide a drift eliminator assembly for use in a cooling tower which is compact and may be constructed in factory assembled panels to reduce the field erection time, and which may be readily placed in or removed from its operative position for repair or replacement.
  • the present invention provides a drift eliminator as sembly for use in combination with a cooling tower including a plurality of drift eliminator panels secured together in an end to end relationship.
  • Each panel includes a plurality of longitudinally extending drift eliminator blades supported at their respective ends by a pair of side plates.
  • the side plates of longitudinally adjacent panels are secured together defining an integral drain channel therebetween.
  • the side plates have openings integral therewith to permit liquid collected on the blades to pass therethrough into the drain channel for discharge to a cold water basin.
  • FIG. 1 is a side elevational view of a portion of the cooling tower, parts being broken away to show the positioning of the drift eliminator assembly constructed in accordance with the present invention
  • FIG. 2 is a side view taken along line 22 in FIG. 1 showing the drift eliminator panels of the present invention
  • FIG. 3 is a fragmentary elevational view of the upper portion of the drift eliminator assembly shown in FIG.
  • FIG. 4 is an enlarged elevational view of a portion of the drift eliminator assembly shown in FIG. 3 showing the connection of the eliminator blades to the side plates;
  • FIG. 5 is a sectional view taken along line 55 in FIG. 3 showing the formation of drain channels between adjacent drift eliminator panels.
  • Housing 11 includes a top deck structure 12 which defines a water distribution basin 13 thereabove. Liquid, such as water, to be cooled is pumped into the basin 13 from which the liquid drains via suitable metering orifices (not shown) into a fill or packing section 16 positioned immediately below basin 13. After descending through the fill or packing section 16, the liquid is collected in a cold water collecting basin 17 for removal therefrom.
  • suitable metering orifices not shown
  • Drift eliminator assembly 20 prevents these airborne liquid particles from escaping through the fan stack.
  • Drift eliminator assembly traps the liquid particles in the high velocity exhaust air by redirecting the air flow as it passes therethrough. Entrained liquid droplets impinge and collect on the drift eliminator blades 22 from which the collected water drains down through the tower to basin 17.
  • the construction of the drift eliminator blades 22 as shown in FIGS. 3-5 is fully disclosed in copending U.S. Pat. application Ser. No. 161,029, assigned to the same assignee as the present invention. Blades 22 effectively and efficiently remove the liquid droplets entrained in the air stream and control the direction of air flow in'a manner which minimizes the pressure drop in the air stream.
  • the present invention specifically concerns itself with a unique support structure for directing the collected droplets from the blades 22 back through the tower to basin 17.
  • drift eliminator assembly 20 includes a plurality of eliminator panels 25 secured together in an end to end relationship; each panel 25 includes a plurality of inclined eliminator blades 22 supported by a side plate at their respective ends.
  • Side plates 30 extend vertically substantially the entire height of the panel 25 and include central portions 31, inner flanges 32 and outer flanges 34, as best seen in FIG. 5.
  • Flanges 32 extend outward from the central portions 31 at substantially right angles thereto.
  • Flanges 34 similarly extend outward from the central portions 31 and are formed to include inwardly extending tab portions 36 and outwardly extending connecting ears 38, both extending substantially parallel to central portions 31.
  • eliminator blades 22 are constructued as elongated cellular members of substantially V-shape hollow cross-section including a pair of inclined sections 40 and 42 having equal but opposite slopes. Sections 40 and 42 are connected together at their converging ends by sections 44. The diverging ends of sections 40 and 42 have nose sections 46 and 48 integral therewith, which are substantially parallel to sections 44. Stiffener members 45 define the ends of sections 40, 42, 44, 46 and 48 and serve to increase the rigidity of blades 22. Blades 22 are preferably extruded of a plastic material such as polypropylene or polyvinyl chloride.
  • Pins 60 Securing blades 22 to side plates 30 in a facing relationship defining passageways 50 between adjacent blades so as to permit the passage of air therethrough are a pair of connecting pins 60 which extend through openings 62 and 64 formed in side plates 30.
  • Pins 60 include a head portion and a stem portion. The stem portion passes through the opening 62 and 64 and securely grasps one of the stiffener members 45. Openings 62 and 64 are dimensioned and shaped to prevent the head portion from passing therethrough. As seen in FIG. 4, openings 64 are L-shaped and therefore leave open areas not closed off by pins 60 to permit water collected on blades 22 to pass therethrough.
  • Pins 60 may be of various designs known in the art. An example of a presently preferred design is disclosed in the above mentioned U.S. Patent application Ser. No. 161,029.
  • longitudinally adjacent panels 25 are secured together by securing together the adjacent side plates 30.
  • the inner flanges 32 overlap one another at their outer edges and the tab portions 36 contact one another so as to space the plates 30 by a predetermined distance and thereby form a drain channel therebetween.
  • a vertically extending support member 72 is sandwiched between the adjacent connecting ears 38 and secured thereto by a connecting pin 75.
  • member 72 includes a dogleg type slot 74 to receive pin 75.
  • Support member 72 extends the entire height of assembly 20 and serves to secure vertically adjacent panels 25 together to form a drift eliminator assembly 20 that is rigid and able to withstand the forces applied thereto by the air stream contacting the blades 22.
  • Drift eliminator assembly 20 is supported from the top deck 12 at its upper end and secured to the foundation defining basin 17 at its lower end. Referring to FIGS. 1 and 3, assembly 20 is suspended from the fill hanger tubings 78 by a support assembly 80.
  • Support assembly 80 includes support members 72 which are secured to side plates 30, support members 82 which are spaced from and parallel to a corresponding member 72, and a plurality of substantially vertically spaced tie members 84 which connect members 72 to members 82.
  • the upper ends of members 72 and 82 are respectively secured to a corresponding tube 78 by clamps 85 so as to suspend assembly 80 therefrom.
  • the lower ends of members 72 include a support member 86 extending inwardly beyond the inner edges of blades 22 to receive the outer end of a tie rod 87.
  • the inner end of tie rod 87 is threadedly received by an anchor member 88 embedded within the foundation.
  • the angle of inclination of assembly 20 to the direction of flow of the air stream may be accurately erected by changing the effective length
  • liquid to be cooled is pumped into basin 13 from which the liquid drains into fill area 16 via suitable metering orifices.
  • the liquid then falls by gravity through fill area 16 where it is broken up into droplets by splashing on the fill, and also forms a liquid film on the fill and structural parts.
  • An air stream is drawn into the tower through inlet louvers l8 and then through fill area 16 by suitable fan means.
  • the gravitating liquid is effectively cooled by the stream of air passing through fill area 16 and is collected in cold water basin 17.
  • a certain number of liquid droplets become entrained in the air stream and create a nuisance and potential hazard if they are allowed to escape to the outside air.
  • the air stream with the liquid droplets entrained therein flows from fill area 16 through drift eliminator assembly 20, as indicated by arrows in FIG. 1.
  • the liquid entrained air passes through passages 50 between adjacent blades 22 contacting the surfaces thereof causing the entrained liquid to collect on the lower surfaces of passages 50. Since as heretofore mentnioned, blades 22 and consequently passages 50 are longitudinally inclined the liquid collected on the surfaces of passages 50 flows downward toward side plate 30.
  • the liquid then passes through openings 64 in side plates 30 and enters drain channels 70 where it is free to gravitate unobstructed downward into basin 17.
  • Drift eliminator assembly of the present invention provides more complete deposition of the liquid droplets entrained in the air by efficiently removing the liquid collected on eliminator blades 22 and directing it into basin 17.
  • the unique construction of eliminator panels 25 permits them to be factory assembled to reduce on-site construction costs.
  • drift eliminator assembly within the tower, disposed to remove droplets of liquid entrained in said air immediately prior to discharge of said air through said outlet;
  • drift eliminator panels secured together in an end to end relationship
  • each of said panels including a plurality of longitudinally extending drift eliminator blades positioned one above the other and supported at their respective ends by a pair of side plates;
  • said side plates having openings integral therewith and said eliminator blades being inclined so as to permit liquid collected on said blades to flow through said openings into said drain channel;
  • each of said side plates includes first and second flanges extending longitudinally outward therefrom towards the adjacent side plate such that corresponding first flanges and corresponding second flanges of adjacent side plates are in contact with one another so as to form said integral drain channel therebetween;
  • said first flanges include connecting ears integral therewith for receipt of fastening means therethrough so as to secure together longitudinally adjacent side plates;
  • each of said eliminator blades is secured to said side plates by pin means having a shank portion which extends through said side plate openings to grasp said eliminator blade and a head portion dimensioned to prevent passage of it through said side plate opening.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separating Particles In Gases By Inertia (AREA)
US00295320A 1972-10-05 1972-10-05 Drift eliminator assembly Expired - Lifetime US3850595A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00295320A US3850595A (en) 1972-10-05 1972-10-05 Drift eliminator assembly
CA176,069A CA1012455A (en) 1972-10-05 1973-07-10 Drift eliminator assembly
ZA734641A ZA734641B (en) 1972-10-05 1973-07-10 Drift eliminator assembly
JP48092325A JPS4972756A (cs) 1972-10-05 1973-08-17
DE19732342025 DE2342025A1 (de) 1972-10-05 1973-08-20 Spruehwasser-auffangvorrichtung fuer einen kuehlturm
ES418940A ES418940A1 (es) 1972-10-05 1973-09-20 Una disposicion de torre de enfriamiento de liquido.
GB4558573A GB1414068A (en) 1972-10-05 1973-09-28 Drift eliminator assembly
IT52893/73A IT996252B (it) 1972-10-05 1973-10-03 Complesso a pannelli per eliminare il trascinamento di liquido in tor ri di raffreddamento

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00295320A US3850595A (en) 1972-10-05 1972-10-05 Drift eliminator assembly

Publications (1)

Publication Number Publication Date
US3850595A true US3850595A (en) 1974-11-26

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ID=23137200

Family Applications (1)

Application Number Title Priority Date Filing Date
US00295320A Expired - Lifetime US3850595A (en) 1972-10-05 1972-10-05 Drift eliminator assembly

Country Status (8)

Country Link
US (1) US3850595A (cs)
JP (1) JPS4972756A (cs)
CA (1) CA1012455A (cs)
DE (1) DE2342025A1 (cs)
ES (1) ES418940A1 (cs)
GB (1) GB1414068A (cs)
IT (1) IT996252B (cs)
ZA (1) ZA734641B (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014669A (en) * 1975-12-24 1977-03-29 Ecodyne Corporation Self-locking drift eliminator
WO2004028978A1 (en) * 2002-09-27 2004-04-08 Snyder Milton W Low or zero bleed water discharge cooling tower system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58500433A (ja) * 1981-02-12 1983-03-24 キヤトル　クリ−ク　コオペラテイブ　シユガ−　ミリング　アソシエ−シヨン　リミテツド 同伴飛沫分離機

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US304787A (en) * 1884-09-09 Metal column
US433882A (en) * 1890-08-05 Thomas c
US1047765A (en) * 1912-07-11 1912-12-17 George C Derby Air purifying and humidifying apparatus.
US1134976A (en) * 1914-05-14 1915-04-06 Warren Webster & Co Means for humidifying air.
US1329522A (en) * 1919-07-11 1920-02-03 American Steam Conveyor Corp Ash-conveyer
US1855962A (en) * 1928-12-22 1932-04-26 Harry Cooling & Equipment Comp Louver mounting for cooling towers
US2356192A (en) * 1942-10-20 1944-08-22 Foster Wheeler Corp Cooling tower
US2658583A (en) * 1952-05-31 1953-11-10 Gen Electric Structural member for grilles and air filters
US2752129A (en) * 1951-01-13 1956-06-26 Modine Mfg Co Convector or other heat exchange device
US2808243A (en) * 1954-12-13 1957-10-01 Santa Fe Tank & Tower Company Cooling tower
US2854090A (en) * 1956-12-24 1958-09-30 Fluor Corp Crossflow cooling tower
US2911011A (en) * 1958-02-20 1959-11-03 William M Niehart Humidifying apparatus
US2975874A (en) * 1958-04-01 1961-03-21 Pagan Alberto Girder made up of structural members
US3063471A (en) * 1959-01-09 1962-11-13 Victor S Murray Floor feeder duct
US3116989A (en) * 1958-08-18 1964-01-07 Anaconda Co Air cleaning apparatus
US3465654A (en) * 1967-07-17 1969-09-09 Harry Fox Drain device
US3517486A (en) * 1966-05-16 1970-06-30 Delta P Inc Vane-type separator
US3748832A (en) * 1971-07-09 1973-07-31 Fluor Cooling Products Co Drift eliminator

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US304787A (en) * 1884-09-09 Metal column
US433882A (en) * 1890-08-05 Thomas c
US1047765A (en) * 1912-07-11 1912-12-17 George C Derby Air purifying and humidifying apparatus.
US1134976A (en) * 1914-05-14 1915-04-06 Warren Webster & Co Means for humidifying air.
US1329522A (en) * 1919-07-11 1920-02-03 American Steam Conveyor Corp Ash-conveyer
US1855962A (en) * 1928-12-22 1932-04-26 Harry Cooling & Equipment Comp Louver mounting for cooling towers
US2356192A (en) * 1942-10-20 1944-08-22 Foster Wheeler Corp Cooling tower
US2752129A (en) * 1951-01-13 1956-06-26 Modine Mfg Co Convector or other heat exchange device
US2658583A (en) * 1952-05-31 1953-11-10 Gen Electric Structural member for grilles and air filters
US2808243A (en) * 1954-12-13 1957-10-01 Santa Fe Tank & Tower Company Cooling tower
US2854090A (en) * 1956-12-24 1958-09-30 Fluor Corp Crossflow cooling tower
US2911011A (en) * 1958-02-20 1959-11-03 William M Niehart Humidifying apparatus
US2975874A (en) * 1958-04-01 1961-03-21 Pagan Alberto Girder made up of structural members
US3116989A (en) * 1958-08-18 1964-01-07 Anaconda Co Air cleaning apparatus
US3063471A (en) * 1959-01-09 1962-11-13 Victor S Murray Floor feeder duct
US3517486A (en) * 1966-05-16 1970-06-30 Delta P Inc Vane-type separator
US3465654A (en) * 1967-07-17 1969-09-09 Harry Fox Drain device
US3748832A (en) * 1971-07-09 1973-07-31 Fluor Cooling Products Co Drift eliminator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014669A (en) * 1975-12-24 1977-03-29 Ecodyne Corporation Self-locking drift eliminator
WO2004028978A1 (en) * 2002-09-27 2004-04-08 Snyder Milton W Low or zero bleed water discharge cooling tower system

Also Published As

Publication number Publication date
ES418940A1 (es) 1976-03-01
GB1414068A (en) 1975-11-12
JPS4972756A (cs) 1974-07-13
IT996252B (it) 1975-12-10
CA1012455A (en) 1977-06-21
ZA734641B (en) 1974-06-26
DE2342025A1 (de) 1974-04-18

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CUSTODIS-ECODYNE, INC., P.O. BOX 1267 SANTA ROSA,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ECODYNE CORPORATION A DE CORP;REEL/FRAME:004265/0399

Effective date: 19840430

Owner name: CUSTODIS-ECODYNE, INC.,CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ECODYNE CORPORATION A DE CORP;REEL/FRAME:004265/0399

Effective date: 19840430