US3254830A - Apparatus for varying the air quantity in air distribution chambers - Google Patents

Apparatus for varying the air quantity in air distribution chambers Download PDF

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Publication number
US3254830A
US3254830A US353032A US35303264A US3254830A US 3254830 A US3254830 A US 3254830A US 353032 A US353032 A US 353032A US 35303264 A US35303264 A US 35303264A US 3254830 A US3254830 A US 3254830A
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US
United States
Prior art keywords
dampers
fans
axes
fan
varying
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
US353032A
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English (en)
Inventor
Wallin Sven Werner
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.)
Svenska Flaktfabriken AB
Original Assignee
Svenska Flaktfabriken AB
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Filing date
Publication date
Application filed by Svenska Flaktfabriken AB filed Critical Svenska Flaktfabriken AB
Application granted granted Critical
Publication of US3254830A publication Critical patent/US3254830A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F24F2013/1473—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means with cams or levers

Definitions

  • the present invention relates to apparatus forvarying the quantity of gaseous medium in a medium distribution chamber for the supply and discharge of air or other gaseous medium.
  • a medium distribution chamber for the supply and discharge of air or other gaseous medium.
  • devices of this kind it is common practice to vary the air quantity by varying the speed of the fans used or by means of throttling the fans.
  • Devices for speed control are usually complicated, and the use of pressure regulators is an uneconomical solution in view of the great power consumed in such devices.
  • the non-return dampers may in a known manner he made as vertically oriented damper blades or flaps, the swinging centres of which are so displaced with respect to the vertical that a self-closing efiect is automatically obtained, when the fan associated therewith is switchedotf.
  • the damper blades or flaps are inter-connected by a coupling rod secured at different distances from the swinging centres of the blades or flaps in such a manner that when in their open position, a diifusor is formed.
  • these chambers are, according to a suitable embodiment of the invention, mutually interconnected by one or more connecting channels thus creating a common air distributing system in order to obtain increased flexibility in varying the air quantity.
  • FIG. 1 is a profile view of a distribution chamber having a pair of working fans, and a portion of which chamber is cutaway to better illustrate the mounting of the fans in the chamber;
  • FIG. 1a is a perspective view of a centrifugal fan constructed in accordance with the invention.
  • FIG. 2 is a perspective view of a plurality of co-operating distribution chambers.
  • a distribution chamber 1 is equipped with a plurality of fans, in the present instance two designated 2 and 3 comprising centrifugal fans having nonreturn dampers 4a, 4b as shown in FIG. 1a.
  • the nonreturn dampers are, according to the invention constructed as vertically oriented damper blades or flaps having swinging centers or axes 5 and 6, which centers are displaced with respect to the vertical plane so that a self-closing effect is automatically obtained when the fan in question is switched-off.
  • FIGS. 1 and 1a the swinging axes 5 and 6
  • a treatment plant 8 comprises four distribution chambers 1a, 1b, 1c and 1d located opposite to each other.
  • the distribution chambers are as shown in FIG.'2 mutually inter-connected by means of a number of connecting channels 9, which, together with the distribution chambers create a common air distributing system.
  • the fans connected to the distribution chambers may be displaced both vertically and horizontally.
  • the fans located opposite to each other on either side of the treatment plant are preferably interconnected to be switched-on or switched-01f at the same time.
  • cleaning doors are provided on the distribution chambers. During this cleaning, in order not to spoil the balance in the system, which balance is gained thanks to the invention, the cleaning doors located opposite to each other on either side of the treatment plant should preferably be inter-connected for simultaneous opening.
  • Apparatus for varying the quantity of gaseous medium supplied into a distribution chamber said distribution chamber including a plurality of fans operating in parallel, said fans adapted for connection and disconnection individually and each having at least a pair of substantially vertically oriented dampers mounted in the terminal open end of said fan, each of said dampers having vertically oriented swinging axes, said axes being offset whereby disconnection of at least one of said fans causes said dampers to substantially close ofi the outlet of said one fan automatically, thereby impeding reverse flow in said fan, said dampers being of a fiat configura tion and inter-connected by means of a coupling rod secured to said dampers at differing distances from said swing axes wherein said dampers in their open position define a flow path of increasing cross-sectional area from the swinging axes outwardly, thereby causing the flow of gaseous medium to expand as it traverses through the dampers.
  • Apparatus in accordance with claim 1 including a plurality of mutually inter-connected distribution chambers, each of said chambers connected to the other by means of connecting channels whereby a common air distribution system is obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ventilation (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Duct Arrangements (AREA)
  • Air-Flow Control Members (AREA)
US353032A 1963-03-19 1964-03-18 Apparatus for varying the air quantity in air distribution chambers Expired - Lifetime US3254830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE300863 1963-03-19

Publications (1)

Publication Number Publication Date
US3254830A true US3254830A (en) 1966-06-07

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Application Number Title Priority Date Filing Date
US353032A Expired - Lifetime US3254830A (en) 1963-03-19 1964-03-18 Apparatus for varying the air quantity in air distribution chambers

Country Status (9)

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US (1) US3254830A (en))
AT (1) AT250634B (en))
BE (1) BE645431A (en))
CH (1) CH411287A (en))
ES (1) ES297781A1 (en))
FI (1) FI47016C (en))
FR (1) FR1385973A (en))
GB (1) GB995962A (en))
NL (1) NL6402869A (en))

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398880A (en) * 1965-12-31 1968-08-27 Svenska Flaektfabriken Ab Centrifugal fan
US20060171803A1 (en) * 2005-01-28 2006-08-03 Japan Servo Co., Ltd. Centrifugal fan
US20080187433A1 (en) * 2003-03-20 2008-08-07 Hopkins Lawrence G Fan array fan section in air-handling systems
US8072756B1 (en) * 2010-05-28 2011-12-06 Rockwell Automation Technologies, Inc. Air cooling of medium voltage drive components
US8398365B2 (en) 2003-03-20 2013-03-19 Huntair, Inc. Modular fan units with sound attenuation layers for an air handling system
US20150159673A1 (en) * 2013-12-10 2015-06-11 Hon Hai Precision Industry Co., Ltd. Fan assembly
US20150167691A1 (en) * 2013-12-12 2015-06-18 Hon Hai Precision Industry Co., Ltd. Fan assembly
US11255332B2 (en) 2003-03-20 2022-02-22 Nortek Air Solutions, Llc Modular fan housing with multiple modular units having sound attenuation for a fan array for an air-handling system

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699873A (en) * 1971-06-14 1972-10-24 Philco Ford Corp Air flow control apparatus
NL9000718A (nl) * 1990-03-27 1991-10-16 Navep Bv Klimatiseringsinrichting, in het bijzonder geschikt voor het behandelen van vleeswaren.
US5167252A (en) * 1991-01-29 1992-12-01 W. R. Grace & Co. Conn. High temperature control damper with sealing flange
WO2017146352A1 (ko) 2016-02-26 2017-08-31 엘지전자 주식회사 공기 청정기
US10436469B2 (en) 2016-02-26 2019-10-08 Lg Electronics Inc. Air cleaner
EP3211343B1 (en) 2016-02-26 2020-09-09 LG Electronics Inc. Air cleaner
US10518205B2 (en) 2016-02-26 2019-12-31 Lg Electronics Inc. Air cleaner
CN111765554B (zh) 2016-02-26 2022-02-25 Lg电子株式会社 空气清洁器
CN111156622B (zh) 2016-02-26 2022-04-26 Lg电子株式会社 空气清洁器
EP3211337B1 (en) 2016-02-26 2020-09-23 LG Electronics Inc. Air cleaner
US9943794B2 (en) 2016-02-26 2018-04-17 Lg Electronics Inc. Air cleaner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1946300A (en) * 1931-07-06 1934-02-06 Vercruyssen August Automatic draft and combustion control
US2030993A (en) * 1934-08-27 1936-02-18 Internat Engineering Inc Fan
US2279425A (en) * 1939-11-16 1942-04-14 Westinghouse Electric & Mfg Co Discharge shutter for blowers
US2673512A (en) * 1948-09-17 1954-03-30 Gen Motors Corp Air conditioning apparatus
US2682951A (en) * 1952-11-24 1954-07-06 Hamburg Samuel Fan for combine separators

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1946300A (en) * 1931-07-06 1934-02-06 Vercruyssen August Automatic draft and combustion control
US2030993A (en) * 1934-08-27 1936-02-18 Internat Engineering Inc Fan
US2279425A (en) * 1939-11-16 1942-04-14 Westinghouse Electric & Mfg Co Discharge shutter for blowers
US2673512A (en) * 1948-09-17 1954-03-30 Gen Motors Corp Air conditioning apparatus
US2682951A (en) * 1952-11-24 1954-07-06 Hamburg Samuel Fan for combine separators

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398880A (en) * 1965-12-31 1968-08-27 Svenska Flaektfabriken Ab Centrifugal fan
US8556574B2 (en) 2003-03-20 2013-10-15 Huntair, Inc. Fan array fan section in air-handling systems
US8694175B2 (en) 2003-03-20 2014-04-08 Huntair, Inc. Fan array fan section in air-handling systems
US20080187433A1 (en) * 2003-03-20 2008-08-07 Hopkins Lawrence G Fan array fan section in air-handling systems
US7922442B2 (en) 2003-03-20 2011-04-12 Huntair, Inc. Fan array fan section in air-handling systems
US20110212679A1 (en) * 2003-03-20 2011-09-01 Huntair, Inc. Fan array fan section in air-handling systems
US11255332B2 (en) 2003-03-20 2022-02-22 Nortek Air Solutions, Llc Modular fan housing with multiple modular units having sound attenuation for a fan array for an air-handling system
US8398365B2 (en) 2003-03-20 2013-03-19 Huntair, Inc. Modular fan units with sound attenuation layers for an air handling system
US8414251B2 (en) 2003-03-20 2013-04-09 Huntair, Inc. Modular fan housing with multiple modular units having sound attenuation for a fan array for an air-handling system
US8419348B2 (en) 2003-03-20 2013-04-16 Huntair, Inc. Fan array fan section in air-handling systems
US10641271B2 (en) 2003-03-20 2020-05-05 Nortek Air Solutions, Llc Fan array fan section in air-handling systems
US10495094B2 (en) 2003-03-20 2019-12-03 Nortek Air Solutions, Llc Modular fan housing with multiple modular units having sound attenuation for a fan array for an air-handling system
US8734086B2 (en) 2003-03-20 2014-05-27 Huntair, Inc. Modular fan housing with multiple modular units having sound attenuation for a fan array for an air-handling system
US8562283B2 (en) * 2003-03-20 2013-10-22 Huntair, Inc. Fan array fan section in air-handling systems
US8727700B2 (en) 2003-03-20 2014-05-20 Huntair, Inc. Fan array fan section in air-handling systems
US8727701B2 (en) 2004-03-19 2014-05-20 Huntair, Inc. Modular fan housing with multiple modular units having sound attenuation for a fan array for an air-handling system
US7329089B2 (en) * 2005-01-28 2008-02-12 Japan Servo Co., Ltd. Centrifugal fan
US20060171803A1 (en) * 2005-01-28 2006-08-03 Japan Servo Co., Ltd. Centrifugal fan
US8897009B2 (en) 2010-05-28 2014-11-25 Rockwell Automation Technologies, Inc. Air cooling of medium voltage drive components
US8072756B1 (en) * 2010-05-28 2011-12-06 Rockwell Automation Technologies, Inc. Air cooling of medium voltage drive components
US20150159673A1 (en) * 2013-12-10 2015-06-11 Hon Hai Precision Industry Co., Ltd. Fan assembly
US20150167691A1 (en) * 2013-12-12 2015-06-18 Hon Hai Precision Industry Co., Ltd. Fan assembly

Also Published As

Publication number Publication date
CH411287A (de) 1966-04-15
FR1385973A (fr) 1965-01-15
GB995962A (en) 1965-06-23
FI47016C (fi) 1973-08-10
AT250634B (de) 1966-11-25
NL6402869A (en)) 1964-09-21
ES297781A1 (es) 1964-09-01
FI47016B (en)) 1973-05-02
BE645431A (en)) 1964-07-16

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