US3421428A - Ventilating fan unit - Google Patents

Ventilating fan unit Download PDF

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Publication number
US3421428A
US3421428A US607269A US3421428DA US3421428A US 3421428 A US3421428 A US 3421428A US 607269 A US607269 A US 607269A US 3421428D A US3421428D A US 3421428DA US 3421428 A US3421428 A US 3421428A
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US
United States
Prior art keywords
air
fan
fan unit
half shells
interior
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
US607269A
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English (en)
Inventor
Ludwig Baumann
Benno Schutze
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Individual
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Individual
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Filing date
Publication date
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Publication of US3421428A publication Critical patent/US3421428A/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
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • 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

Definitions

  • a ventilating fan unit insertable into an opening for the purpose of propelling air from the outside atmos phere into a ventilated interior and at the same time to exhaust air from the ventilated interior to the outside.
  • the unit has two half shells covering the outside and inside respectively of the said opening and bearing against the opposite sides of the edges thereof.
  • Each of the shells has a central recessed portion with a floor at its base.
  • a fan motor is fixedly mounted to each said floor so as to accomplish the particular result of propelling air both inwardly and outwardly simultaneously.
  • This invention relates to ventilating fan units and more specifically to a ventilating fan unit insertable into an opening in a window pane, in a wall or other partition and adapted to propel air from the outside atmosphere into a ventilated interior and at the same time to exhaust air from the ventilated interior to the outside, preferably through an interposed shutter.
  • the ventilating fan unit proposed by the present invention is distinguished from known devices of the specified kind by its simplicity of construction, its higher performance and the compactness of its design, characteristics which permit the proposed ventilating fan unit to be used where known forms of construction would not be applicable because of their unavoidable bulk and complicated construction.
  • the ventilating fan unit proposed by the present invention comprises two half shells covering the outside and inside respectively of said opening and bearing against opposite sides of the edges thereof, each half shell being preferably provided in its interior with parting webs extending substantially through the full depth of the half shell, and each half shell being formed with a central recessed portion with a floor at its base which may or may not be perforated, the floors of said two recesses 'being either detachably connected back to back approximately in the plane defined by the abutting peripheral edges of said half shells and a fan motor being affixed to said floors, or the two facing floor-s being separated by interposed spacing members axially aligning therewith and forming air ducts, and the motor being attached to said air ducts or to one of said floors, so arranged that each of the two shaft ends or driving elements of the motor extends axially partly or wholly into one of said recessed portions of the two half shells and the-rein carries an axial and/or radial flow fan, each fan being adapted to propel
  • FIG. 1 is a section of a ventilating fan unit according to the invention in which the contradirectional air streams are generated by axial flow fans;
  • FIG. 2 is a section of another embodiment of the in vention in which the two air streams are generated by radial flow fans, and the motor is contained between widened recesses in the two half shells forming a ⁇ bulbous chamber;
  • FIG. 3 is a section of a detail in a particular embodimerit of the proposed ventilating fan unit in which the fan housing is composed of half shells of different depths;
  • FIG. 4 is a perspective view of an embodiment of a half she'll viewed from the inside;
  • FIG. 5 is a longitudinal section of a ventilating fan unit comprising radial flow fans in volute-shaped recesses in the two half shells;
  • FIG. 6 is a schematic exploded view of the ventilating fan unit according to FIG. 5 showing the interior of the voluteashaped recesses containing the radial fiow fan blading;
  • FIG. 7 is a perspective view of the interior of a half shell divided by 4 parting webs
  • FIG. 8 is a longitudinal section of another embodirnent of the proposed ventilating fan unit comprising a central through-duct containing an axial flow fan and a radial fiow fan working in a separate passage, and
  • FIG. 9 is a longitudinal section of a modification of the ventilating fan unit according to FIG. 8 in which the axial flow fan and the radial flow fan likewise work in separate air streams, but in which the two fans form a structural unit.
  • the ventilating fan unit proposed by the invention generally comprises two half shells 10 and 11 of a fan housing which are so affixed to the inside and outside respectively of a corresponding opening cut into a window pane 21, wall or like partition, that the edges of the two half shells, as shown in the drawings, abut each side of the edges of the circular opening in the window pane 2'1 and thus, with the interposition of sealing rings 20, form a gas and liquid tight joint.
  • Each half shell is formed in the medium plane of the housing with a transverse internal parting web 28 of the same depth as the half shell as well as with a central cylindrical recessed portion 12 and 13 respectively, as shown in the representation of the half shell 11 in FIG. 4.
  • the floors of the cylindrical recesses 12 and 13 are detachably connected together back to back and the edges of the two half shells 10 and 11 are thereby pressed against opposite sides of the window pane 21.
  • a fan motor 15 is located in axially aligning openings 14 in the floors of the cylindrical recesses 12 and 13 in the two half shells 10 and 11 and secured in the centre plane of the fan unit for instance to one of the floors.
  • the shaft ends 32 projecting from each side of the motor each carry an axial flow fan 16 and 17 and each fan is protected from the outside by a louvre 33 and 34, respectively, wherein each louvre is inserted into the corresponding cylindrical recess 12 and 13 respectively.
  • the upper of the two chambers in the half shell 11 contains outlet openings 24 in the upper peripheral wall of the shell, whereas the bottom chamber communicates with the interior of the cylindrical recess 13 through openings 30 in the side wall of the recess.
  • the two half shells 10 and 11 are assembled as has above been described, but they are so fitted together that the positions of the respective air openings are relatively reversed.
  • the upper semicircular chamber which is completed when the two half shells 10 and 11 are fixed together, will therefore now communicate with the ventilated interior through the outlet openings 24 in the upper wall of the half shell 11 and with the interior of the cylindrical recess 12 in the other half shell through air openings 22.
  • the other semicircular chamber communicates through the air openings 30 with the interior of the cylindrical recess 13 and with the outside atmosphere through the intake openings 31 in the wall of the half shell 10 on the outside of the window pane.
  • the fan 17 which draws in used air from the interior of the room blows this air through the air openings 30 in the cylindrical recessed portion 13 in the half shell 11 into the bottom semicircular chamber and thence through the bottom part of the opening in the window pane 21 into the outside atmosphere through the outlet openings 31 in the half shell 10.
  • An annular disk 18 is located in the median plane of the fan unit 10, 11 and embraces the fan motor. This disk 18 is provided with windows 23 in the interior of each of the two semicircular chambers.
  • this annular disk is fitted centrally inside the circular opening in the window pane 21 and is detachably fitted between the abutting floors of the two cylindrical recesses 12 and 13 in the two half shells 10 and 11.
  • This arrangement permits the two air streams to flow in contrary directions, each through one of the semicircular chambers, without the one interfering with the other.
  • a second rotatable annular disk is located adjacent the fixed annular disk 18 and provided with windows similarly disposed to the windows in the annular disk 18.
  • the respective windows can be moved either into register or relatively displaced to close the window openings and thereby to prevent air from flowing through the peripheral chambers.
  • an iris type shutter might be provided for closing the windows 23.
  • Rubber seals 29 are provided between the annular disk 18 and the floors of the two cylindrical recesses 12 and 13 in the two half shells 10 and 11 of the fan housing.
  • the fan unit may be of asymmetrical construction. This can be achieved by using half shells 10 and 11 of different depths for forming the housing but providing the half shells with recesses 12 and 13 of like depth. In such an arrangement the annular disk and the sealing ring 19 would still be located centrally with respect to the opening in the window pane 21, but olTset therefrom into the plane in which the floors of the two cylindrical recesses 12 and 13 of the two half shells 10 and 11 meet. In the embodiment illustrated in FIG. 2 the floors of the recesses 12 and 13 of the two half shells 10 and 11 widen radially outwardly to form a bulged cavity between the two floors for the reception therein of the fan motor 15.
  • the interior of the two half shells 10 and 11 may be provided with several parting webs 28, 28, preferably placed on the cross and extending to the peripheral walls of the cylindrical recesses 12 and 13 in such manner that several chambers extending through the entire cross section of the fan housing are formed when the two half shells 10 and 11 have been fixed together.
  • the divisional chambers in the half shell 11 located on the inside of the window pane may contain humidifying, ozone evolving, heating or filtering means which may be independently brought into action.
  • the divisional chambers containing such equipment communicate through air openings 24 and 24 with the interior of the ventilated room so that component streams of the entering air enter the interior after having been treated or charged in different ways.
  • the recesses 12 and 13 in the shells 10 and 11 of the fan housing are of volute shape for the reception of radial flow fans 16 and 17 which discharge through openings in web members 27 and 28 which in this case are placed at an angle as will be understood from FIG. 6.
  • the volute-shaped recesses 12 and 13 thus function as diffusers, each co-operating with one of the two chambers with a resultant considerable improvement of the performance of the radial flow fans 16 and 17.
  • the recessed cavities 12 and 13 in the two half shells 10 and 11 have diflerent depths and their floors are partly or completely open.
  • the two half shells 10 and 11 which form the housing contain a fan motor 15 directly or indirectly afiixed to one of the half shells.
  • the motor carries firstly an axial flow fan 17 in a central duct through the fan housing and secondly a separately revolving radial flow fan 17' for generating an air stream contrary in direction through the housing to that generated by the axial flow fan.
  • the radial flow fan 17 is wholly contained in the half shell 11 which is on the inside of the window and operates in direct proximity with the periphery of this half shell and of the peripheral air outlets 24.
  • the recess 12 formed in the half shell 10 on the outside of the window pane 21 may be arranged to extend through to the inside of the window pane 21 into the interior of the half shell on the inside of the window pane 21, the motor 15 being afiixed to the floor of this recess, said floor being perforated where it crosses the central duct.
  • the cylindrical recess 12 of the half shell 10 located on the outside of the window ane 21 terminates within the opening in the window pane and lacks a floor but it is extended inwardly by a likewise cylindrical flanged insertion 18 with a perforated floor carrying the motor 15 in the interior of the other half shell 11 on the inside of the window pane.
  • the flange of the insertion 18 is provided with openings or windows 23 and extends radially outwardly from the end of the cylindrical part of the insertion. The peripheral edge of this flange extends into the region where the two half shells 10 and 11 are affixed and is clamped at this point.
  • a further cylindrical insertion 25 with a flange is provided (cf. FIG. 8).
  • This additional insertion 25 is rotatable and embraces the cylindrical portion of the insertion 18, its flange being provided with openings 26 and its floor with openings 35.
  • By rotation of this further insertion 25 both the central duct for the axial flow fan 17 and the chamber containing the radial flow fan 17' can thus be simultaneously opened and closed.
  • the butt joint between the cylindrical recess 12 of the outside half shell 10 and the cylindrical flanged insertion 18 may be sealed by the provision of a sealing ring 41.
  • the cylindrical recesses 12 and 13 of the two half shells 10 and 11 are very shallow and their respective floors are absent or partly cut away.
  • the axial flow fan 17 carries a shroud 43 which extends into close proximity with the inner ends of the two recesses and thus forms a central duct for the air propelled by the axial flow fan.
  • the outside periphery of the shroud 43 concentrically carries a radial flow fan directly inside the air outlets 24 in the inside half shell 11, the shroud itself being firmly afiixed to the tips of the blades of the axial flow fan 17.
  • the described fan unit can be easily mounted in the window pane 21. This can be done by inserting the completely assembled fan housing comprising the two half shells 10 and 11, ready for use, into an appropriately cut out circular hole in the window pane 21 until the joint between the two shell halves 10 and 11 abuts the edge of the hole. In this position the entire unit is then located by a retaining girth ring 38 pushed from the outside over the half shell that has been passed through the hole. This retaining ring is secured to abut the outside of the window pane 21.
  • the construction of the proposed ventilating fan unit permits of another useful modification which consists in that only one of the two chambers or ducts for carrying air in opposite directions actually contains axial or radial flow fan blading. In such a case the stream of air propelled in one direction will automatically induce a current of air to flow in the other direction either by the displacement of air from the ventilated interior or by the creation of a vacuum pressure therein.
  • a ventilating fan unit insertable into an opening of a building structure to propel air from the outside atmosphere into a ventilated interior and at the same time to exhaust air from the ventilated interior to the outside comprising:
  • each half shell including a central recess portion having a floor at its base, said floors of said recess portions being detachably connected back to back;
  • a fan motor mounted axially of said unit and having two driving shaft ends, one of said driving shaft ends extending axially into one of said recess portions of the two half shells and the other said driving shaft ends extending axially into another of said recessed portions of the two half shells;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US607269A 1966-01-06 1967-01-04 Ventilating fan unit Expired - Lifetime US3421428A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH27466A CH470587A (de) 1966-01-06 1966-01-06 Raumventilator mit gleichzeitiger Förderung von Aussenluft in den Innenraum und von Innenraumluft nach aussen, insbesondere mit Zwischenverschluss
CH1717066A CH499728A (de) 1966-01-06 1966-11-30 Raumventilator

Publications (1)

Publication Number Publication Date
US3421428A true US3421428A (en) 1969-01-14

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ID=25684101

Family Applications (2)

Application Number Title Priority Date Filing Date
US607269A Expired - Lifetime US3421428A (en) 1966-01-06 1967-01-04 Ventilating fan unit
US730962*A Expired - Lifetime US3499378A (en) 1966-01-06 1968-02-05 Ventilating fan unit

Family Applications After (1)

Application Number Title Priority Date Filing Date
US730962*A Expired - Lifetime US3499378A (en) 1966-01-06 1968-02-05 Ventilating fan unit

Country Status (9)

Country Link
US (2) US3421428A (ru)
AT (2) AT277525B (ru)
BE (1) BE692248A (ru)
CH (2) CH470587A (ru)
DE (1) DE6610779U (ru)
ES (1) ES335310A1 (ru)
GB (2) GB1177612A (ru)
NL (1) NL6617849A (ru)
SE (1) SE326814B (ru)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5730651A (en) * 1996-08-08 1998-03-24 Lakewood Engineering And Manufacturing Co. Independent directional-flow air ducts for low-profile window fan
US5829956A (en) * 1997-04-22 1998-11-03 Chen; Yung Fan blade assembly
NL1026296C2 (nl) * 2004-05-28 2005-11-30 Innosource B V Beluchtingsinrichting.
EP1715191A1 (en) * 2005-04-22 2006-10-25 Chung-Yin Cheng Electric fan
US20060270334A1 (en) * 2003-06-12 2006-11-30 Lidartech Co., Ltd. Window having a ventilation equipment
CN103410710A (zh) * 2013-08-28 2013-11-27 苏州萤火虫贸易有限公司 双头出风面罩
US20160084518A1 (en) * 2014-09-22 2016-03-24 Sunonwealth Electric Machine Industry Co., Ltd. Air Exchange Device Capable of Adjusting Temperature Difference
CN107514379A (zh) * 2017-09-25 2017-12-26 深圳市普瑞美泰环保科技有限公司 一种双进风双出风的离心风机
WO2018091131A1 (de) * 2016-11-16 2018-05-24 Ebm-Papst St. Georgen Gmbh & Co. Kg Zweiflutige strömungsmaschine
EP3460250A4 (en) * 2016-07-20 2020-01-22 LG Electronics Inc. -1- FAN
DE102021110148A1 (de) 2021-04-21 2022-10-27 Ventomaxx Gmbh Lüftungsvorrichtung, Wandventilatoreinsatz und zugehöriger Mauerkasten
US11493050B2 (en) * 2018-07-09 2022-11-08 Gd Midea Environment Appliances Mfg Co., Ltd. Fan

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2209301C2 (de) * 1972-02-28 1974-02-07 Buettner-Schilde-Haas Ag, 4150 Krefeld Dachlüfter
GB8421477D0 (en) * 1984-08-24 1984-09-26 Hallewell J E Fresh air breather
GB2212224A (en) * 1987-11-05 1989-07-19 Karjasuo Oy Fan
DE8808007U1 (ru) * 1988-06-22 1988-10-27 Dieckhoener, Elisabeth, 3300 Braunschweig, De
SE505990C2 (sv) * 1989-12-22 1997-10-27 Wirab System Ab Rumsventilator avsedd att monteras i vägg
JP3144977B2 (ja) * 1994-02-21 2001-03-12 松下精工株式会社 換気装置
US6699363B2 (en) 2001-11-13 2004-03-02 E. I. Du Pont De Nemours And Company Modified starch and process therefor
US20110151761A1 (en) * 2009-12-23 2011-06-23 Zeledyne, Llc Through Glass Ventilation
GB2498344B (en) * 2012-01-10 2018-06-06 Greenwood Air Man Limited Fan mounting system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2152614A (en) * 1937-02-06 1939-03-28 Younger Alexander Reginald Ventilating device
CA610080A (en) * 1960-12-06 B. Daly Brian Ventilating fans
US3009409A (en) * 1958-02-11 1961-11-21 Geoffrey R E Weaver Centrifugal fan ventilators

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1487828A (en) * 1922-10-14 1924-03-25 Ziganek Ferdinand Ventilator
US3122307A (en) * 1961-08-08 1964-02-25 Clarage Fan Company Fan equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA610080A (en) * 1960-12-06 B. Daly Brian Ventilating fans
US2152614A (en) * 1937-02-06 1939-03-28 Younger Alexander Reginald Ventilating device
US3009409A (en) * 1958-02-11 1961-11-21 Geoffrey R E Weaver Centrifugal fan ventilators

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5730651A (en) * 1996-08-08 1998-03-24 Lakewood Engineering And Manufacturing Co. Independent directional-flow air ducts for low-profile window fan
US5829956A (en) * 1997-04-22 1998-11-03 Chen; Yung Fan blade assembly
US20060270334A1 (en) * 2003-06-12 2006-11-30 Lidartech Co., Ltd. Window having a ventilation equipment
US7270600B2 (en) * 2003-06-12 2007-09-18 Lidartech Co., Ltd Window having a ventilation equipment
NL1026296C2 (nl) * 2004-05-28 2005-11-30 Innosource B V Beluchtingsinrichting.
EP1715191A1 (en) * 2005-04-22 2006-10-25 Chung-Yin Cheng Electric fan
CN103410710A (zh) * 2013-08-28 2013-11-27 苏州萤火虫贸易有限公司 双头出风面罩
CN103410710B (zh) * 2013-08-28 2016-02-03 乐清市华尊电气有限公司 安全型双头电风扇
US20160084518A1 (en) * 2014-09-22 2016-03-24 Sunonwealth Electric Machine Industry Co., Ltd. Air Exchange Device Capable of Adjusting Temperature Difference
EP3460250A4 (en) * 2016-07-20 2020-01-22 LG Electronics Inc. -1- FAN
US11187240B2 (en) 2016-07-20 2021-11-30 Lg Electronics Inc. Blower
WO2018091131A1 (de) * 2016-11-16 2018-05-24 Ebm-Papst St. Georgen Gmbh & Co. Kg Zweiflutige strömungsmaschine
CN107514379A (zh) * 2017-09-25 2017-12-26 深圳市普瑞美泰环保科技有限公司 一种双进风双出风的离心风机
US11493050B2 (en) * 2018-07-09 2022-11-08 Gd Midea Environment Appliances Mfg Co., Ltd. Fan
DE102021110148A1 (de) 2021-04-21 2022-10-27 Ventomaxx Gmbh Lüftungsvorrichtung, Wandventilatoreinsatz und zugehöriger Mauerkasten

Also Published As

Publication number Publication date
US3499378A (en) 1970-03-10
BE692248A (ru) 1967-06-16
AT277525B (de) 1969-12-29
GB1177612A (en) 1970-01-14
DE1628212B2 (de) 1975-07-10
ES335310A1 (es) 1967-12-01
GB1178230A (en) 1970-01-21
AT297269B (de) 1972-03-27
CH470587A (de) 1969-03-31
DE1628212A1 (de) 1971-02-04
DE6610779U (de) 1976-05-20
CH499728A (de) 1970-11-30
NL6617849A (ru) 1967-07-07
SE326814B (ru) 1970-08-03

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