US2332552A - Roof fan ventilator - Google Patents

Roof fan ventilator Download PDF

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Publication number
US2332552A
US2332552A US480275A US48027543A US2332552A US 2332552 A US2332552 A US 2332552A US 480275 A US480275 A US 480275A US 48027543 A US48027543 A US 48027543A US 2332552 A US2332552 A US 2332552A
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United States
Prior art keywords
damper
air
fan
hood
trunk
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Expired - Lifetime
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US480275A
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John T Belanger
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Individual
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    • 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
    • F04D25/14—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures and having shutters, e.g. automatically closed when not in use
    • 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
    • F24F7/02—Roof ventilation
    • F24F7/025—Roof ventilation with forced air circulation by means of a built-in ventilator
    • 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
    • Y10S454/00—Ventilation
    • Y10S454/906—Noise inhibiting means

Definitions

  • This invention relates to improvements in roof ventilators of the power driven fan type.
  • An V.object is -to provide a Ventil tor wor the.
  • a iurtherpbdect is to provide a ventilator which is so closed when not in use as to effectively exclude snow, rain and the like, andv which automatically opens to permit the exhaust of air driven outwardly by the fan.
  • a meritorious feature is that the ventilator is so constructed that the air outlet passageways k therefrom are so shaped as to direct the air smoothly outwardly without obstruction to its even flow.
  • the Ventilator is provided with dampers pivotally supported and so balancedin such a manner as to normally close the air outlets.
  • Each a pulley I8 on the'motorvshaftfland afpulley 2li7 on the-fan shaft 22.
  • the ian shaftisI supported in suitable bearings carried by a frame ,vvorkr'lll withif'the trunk.
  • the ⁇ fanis aconventionalexf haustfan adapted toexhaust-air from thebuildthe fan.v l i Surmounting'the trunkis a hood structure 26. As shown in a plan' drawing this hood structure may be of a rectangular shape.
  • the hood is suitably secured to the trunk and is provided with a pair of oppositely disposed airioutlets 28.
  • the hood is interiorally shaped as shown in thevertical sectional View in that it is provided with an inverted troughportion 3l] which is so shaped as to direct the air exhausted by the fan outwardly through the two outlets smoothly and with a minimum of obstruction of flow.
  • dedamper is provided with an end portion which projects, when the damper is closed, into that portion of the ventilator adjacent to the exhaust side of the fan. Such end portion extends partially across the air passageway leading away from the fan and is so positioned therein that the damper is actuated -by the pressure of the air v exhausted by the fan so as to be moved to the open position.
  • portion of the damper which is adapted to be acted upon by the air exhausted by the fan is so curved and shaped as not only to'extend, when the damper is in the closed position, partially across the air passageway so as to be actuated by the air blast of the fan to be moved to the open position, but is also so curved that when the damper is in the open position such curved portion serves to direct the air outwardly through the ventilator outlet opening.
  • Figure 1 is a vertical sectional view taken through my improved ventilator.
  • Fig. 2 is a plan view of the structure shown in Figure 1, such view 'being-partially broken away.
  • the Ventilator comprises a tubular trunk portion Ill, which is adapted to be secured to the roof of a building as an upright extension of a roof opening. Suitable flashing is provided to make a tight joint with the roof. l
  • a fan l2 mounted withinA the trunk is a fan l2, adapted to be driven by suitable power means such as an electric motor I4.
  • the fan is here shown as driven from the motor by means of a belt I6, and v sired suitable insulation may be provided within the hood as against heat or sound.
  • a damper 32 is provided for each outlet openl ing. ⁇ Such damper is pivotally4 supported within the hood upon a pivot 34.
  • the inner or lower end 36 of each damper is curved as shown in the Ving structure.
  • Y A circular fan ring l [,surrounds l drawing. The tip portion 31 oi this curved end is bent outwardly as shown in the drawing.
  • This ⁇ curved end of each damper is so weighted as to overbalance the upper end of the damper where- ⁇ by the damper normally occupies the position shown in dotted outline closing the air outletl from the hood. In such dotted outline position the curved end of each damper projects downwardly and inwardly into the trunk and extends partially across the air passageway therefromv 'through which air is exhausted by the fan.
  • each damper is so curved that the air which strikes such end portion is directed What I claim:
  • a roof fan ventilator comprising in combination a tubular trunk portion secured to the roof as an upright outlet extension of an opening through the roof, a ventilator fan rotatably supported within said trunk, a hood surmounting the upper open end of the trunk so shaped as to provide a. curved air outlet extending upwardly and outwardly from the trunk and discharging outwardly therebeyond,'a damper pivotally supported vwithin the hood extending across said outlet and controlling the discharge of air therethrough and having a normal posi-l y,
  • said damper having a curved lower end closing the discharge outlet from the hood between the damper-pivot and the trunk when the damper is in the closed position, said curved lower end of the damper having a tip portion bent inwardly of the hood out of the plane of said curved lower end andextending when the damper is in the closed position partially across the air outlet from the trunk into the hood, said tip portion ofthe damper adapted to be acted upon by the air exhausted by the fan to move the damper to the open position.
  • a roof fan ventilator comprising in combination a tubular trunk portion secured to the roof as an upright outlet extension of an opening through the roof, a ventilator fan rotatably supported within said trunk, a hood surmounting the upper open end of the trunk providing a pair of curved air outlets extending upwardly and outwardly in opposite directions from the trunk discharging outwardly therebeyond, a damper pivotally supported within each air outlet of the hood extending across said outlet and controlling the discharge of air therethrough and having a normal position closing said outlet, said damper having a curved lower end portion closing the discharge outlet from the hood between they pivot and the trunk when the damper is in the closed position.
  • said curved porv tion Ahaving a tip bent inwardly of the hood out of the plane of the curve and projecting downwardly and inwardly into the trunk portion partially across the air outlet therefrom, said curved portion Vvadapted when the damper is in the open position to direct the air striking the same outwardly through the outlet from the hood.

Description

Oct. 26, 1943.- '.J. T. BELANGER 2,332,552
ROOF FAN VENTILATOR Filed March 24, 1945 HHH IN VEN TOR.
` JM?? THe/@229% Mw ML Patented Och 26, 1943 Roo-EFANVENTILATon l.mini tr. Bellanger, Detroit, Mich.
,l 1 'Application March 24, 1Q4'aseria1 No.' 480,275 f 12 claims. (c1. ssl-43) This invention relates to improvements in roof ventilators of the power driven fan type.
An V.object is -to provide a Ventil tor wor the.
character described, which yisvof simple-construci tion, attractive design, and inexpenslve'as to cost. 1
A iurtherpbdect is to provide a ventilator which is so closed when not in use as to effectively exclude snow, rain and the like, andv which automatically opens to permit the exhaust of air driven outwardly by the fan. y,
A meritorious feature is that the ventilator is so constructed that the air outlet passageways k therefrom are so shaped as to direct the air smoothly outwardly without obstruction to its even flow.
The Ventilator is provided with dampers pivotally supported and so balancedin such a manner as to normally close the air outlets. Each a pulley I8 on the'motorvshaftfland afpulley 2li7 on the-fan shaft 22. The ian shaftisI supported in suitable bearings carried by a frame ,vvorkr'lll withif'the trunk. The `fanis aconventionalexf haustfan adapted toexhaust-air from thebuildthe fan.v l i Surmounting'the trunkis a hood structure 26. As shown in a plan' drawing this hood structure may be of a rectangular shape. rThe hood is suitably secured to the trunk and is provided with a pair of oppositely disposed airioutlets 28. The hood is interiorally shaped as shown in thevertical sectional View in that it is provided with an inverted troughportion 3l] which is so shaped as to direct the air exhausted by the fan outwardly through the two outlets smoothly and with a minimum of obstruction of flow. If dedamper is provided with an end portion which projects, when the damper is closed, into that portion of the ventilator adjacent to the exhaust side of the fan. Such end portion extends partially across the air passageway leading away from the fan and is so positioned therein that the damper is actuated -by the pressure of the air v exhausted by the fan so as to be moved to the open position.
More specifically that portion of the damper which is adapted to be acted upon by the air exhausted by the fan is so curved and shaped as not only to'extend, when the damper is in the closed position, partially across the air passageway so as to be actuated by the air blast of the fan to be moved to the open position, but is also so curved that when the damper is in the open position such curved portion serves to direct the air outwardly through the ventilator outlet opening.
Other objects, advantages, and meritorious features of this invention will more particularly appear from the following specification, appended claims and accompanying drawing wherein:
Figure 1 is a vertical sectional view taken through my improved ventilator.
Fig. 2 is a plan view of the structure shown in Figure 1, such view 'being-partially broken away.
The Ventilator comprises a tubular trunk portion Ill, which is adapted to be secured to the roof of a building as an upright extension of a roof opening. Suitable flashing is provided to make a tight joint with the roof. l
Mounted withinA the trunk is a fan l2, adapted to be driven by suitable power means such as an electric motor I4. The fan is here shown as driven from the motor by means of a belt I6, and v sired suitable insulation may be provided within the hood as against heat or sound.
A damper 32 is provided for each outlet openl ing.` Such damper is pivotally4 supported within the hood upon a pivot 34. The inner or lower end 36 of each damper is curved as shown in the Ving structure. Y A circular fan ring l [,surrounds l drawing. The tip portion 31 oi this curved end is bent outwardly as shown in the drawing. This `curved end of each damper is so weighted as to overbalance the upper end of the damper where- `by the damper normally occupies the position shown in dotted outline closing the air outletl from the hood. In such dotted outline position the curved end of each damper projects downwardly and inwardly into the trunk and extends partially across the air passageway therefromv 'through which air is exhausted by the fan.
When the fan is started the air blast acts upon the tip 31 of each damper and swings the damper upwardly to the open vsolid line position.; `The air stream created by the ian maintains the damper in such position during the timethe fan is running. It will be noted that because the tip of the curved end portion of each damper is bent out of the plane of the curve the projection of lsuch end portion across the air passageway from the outlet side of the ian is nly` picked up by the air blast from the fan and f opened whereby the device responds immediately and automatically to open the outlets for exhaust of air. f
The end 36 of each damper is so curved that the air which strikes such end portion is directed What I claim:
1. A roof fan ventilator comprising in combination a tubular trunk portion secured to the roof as an upright outlet extension of an opening through the roof, a ventilator fan rotatably supported within said trunk, a hood surmounting the upper open end of the trunk so shaped as to provide a. curved air outlet extending upwardly and outwardly from the trunk and discharging outwardly therebeyond,'a damper pivotally supported vwithin the hood extending across said outlet and controlling the discharge of air therethrough and having a normal posi-l y,
tion closing said outlet, said damper having a curved lower end closing the discharge outlet from the hood between the damper-pivot and the trunk when the damper is in the closed position, said curved lower end of the damper having a tip portion bent inwardly of the hood out of the plane of said curved lower end andextending when the damper is in the closed position partially across the air outlet from the trunk into the hood, said tip portion ofthe damper adapted to be acted upon by the air exhausted by the fan to move the damper to the open position.
2. A roof fan ventilator comprising in combination a tubular trunk portion secured to the roof as an upright outlet extension of an opening through the roof, a ventilator fan rotatably supported within said trunk, a hood surmounting the upper open end of the trunk providing a pair of curved air outlets extending upwardly and outwardly in opposite directions from the trunk discharging outwardly therebeyond, a damper pivotally supported within each air outlet of the hood extending across said outlet and controlling the discharge of air therethrough and having a normal position closing said outlet, said damper having a curved lower end portion closing the discharge outlet from the hood between they pivot and the trunk when the damper is in the closed position. said curved porv tion Ahaving a tip bent inwardly of the hood out of the plane of the curve and projecting downwardly and inwardly into the trunk portion partially across the air outlet therefrom, said curved portion Vvadapted when the damper is in the open position to direct the air striking the same outwardly through the outlet from the hood. f
' JOHN TI'. BELANGER.
US480275A 1943-03-24 1943-03-24 Roof fan ventilator Expired - Lifetime US2332552A (en)

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492242A (en) * 1943-08-28 1949-12-27 James B Shaver Ventilating apparatus
US2640411A (en) * 1949-06-02 1953-06-02 Edmund E Hans Air inlet housing
US2868105A (en) * 1953-07-15 1959-01-13 Knutson Harold Power ventilator for roofs
US2875678A (en) * 1954-07-06 1959-03-03 Shepherd Wyley Ventilators
US2898841A (en) * 1954-02-01 1959-08-11 Knutson Harold Air scupper
US2900892A (en) * 1954-07-06 1959-08-25 Shepherd Wyley Ventilators
US2926837A (en) * 1957-07-11 1960-03-01 Trane Co Power roof ventilator
US3165054A (en) * 1962-05-31 1965-01-12 Behlen Mfg Company Inc Material storage means
US3212425A (en) * 1962-06-22 1965-10-19 Robertson Co H H Forced flow ventilator
US4036120A (en) * 1975-11-14 1977-07-19 Colt International Limited Ventilators
FR2480366A1 (en) * 1980-04-11 1981-10-16 Pax Electro Prod Ab SHUTTER DEVICE WITH MOBILE SHUTTERS
US4657478A (en) * 1985-12-02 1987-04-14 Airmaster Fan Company Low profile shrouded fan system
US4768424A (en) * 1984-10-23 1988-09-06 Wilhelm Gebhardt And Co. Gmbh Roof ventilator
US4872398A (en) * 1988-09-14 1989-10-10 Shen Hsin Der Air vent throat of indoor ventilating device capable of preventing noise
US5344363A (en) * 1991-10-25 1994-09-06 Grain Systems Incorporated Roof vent assembly for grain storage bin
EP0705983A2 (en) * 1994-09-30 1996-04-10 J.E. Stork Ventilatoren B.V. Roof fan
US5766073A (en) * 1997-01-23 1998-06-16 O'kelley; Charles H. Exhaust header for building ventilator fan
DE19755617A1 (en) * 1997-12-13 1999-06-17 Turbo Lufttechnik Gmbh Combined air and hot flue gas extractor fitted in roof of building
US6457550B1 (en) 2001-03-06 2002-10-01 Twin City Fan Companies, Ltd. Weatherproof sound attenuating device
US20130090053A1 (en) * 2010-11-12 2013-04-11 Panasonic Corporation Ventilation vent cap
US20150105012A1 (en) * 2013-10-11 2015-04-16 P-Tec Products, Inc. Vent cover
US20180066667A1 (en) * 2016-09-06 2018-03-08 Macroair Technologies, Inc. Low aspect ratio fan

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492242A (en) * 1943-08-28 1949-12-27 James B Shaver Ventilating apparatus
US2640411A (en) * 1949-06-02 1953-06-02 Edmund E Hans Air inlet housing
US2868105A (en) * 1953-07-15 1959-01-13 Knutson Harold Power ventilator for roofs
US2898841A (en) * 1954-02-01 1959-08-11 Knutson Harold Air scupper
US2875678A (en) * 1954-07-06 1959-03-03 Shepherd Wyley Ventilators
US2900892A (en) * 1954-07-06 1959-08-25 Shepherd Wyley Ventilators
US2926837A (en) * 1957-07-11 1960-03-01 Trane Co Power roof ventilator
US3165054A (en) * 1962-05-31 1965-01-12 Behlen Mfg Company Inc Material storage means
US3212425A (en) * 1962-06-22 1965-10-19 Robertson Co H H Forced flow ventilator
US4036120A (en) * 1975-11-14 1977-07-19 Colt International Limited Ventilators
FR2480366A1 (en) * 1980-04-11 1981-10-16 Pax Electro Prod Ab SHUTTER DEVICE WITH MOBILE SHUTTERS
US4768424A (en) * 1984-10-23 1988-09-06 Wilhelm Gebhardt And Co. Gmbh Roof ventilator
US4657478A (en) * 1985-12-02 1987-04-14 Airmaster Fan Company Low profile shrouded fan system
US4872398A (en) * 1988-09-14 1989-10-10 Shen Hsin Der Air vent throat of indoor ventilating device capable of preventing noise
US5344363A (en) * 1991-10-25 1994-09-06 Grain Systems Incorporated Roof vent assembly for grain storage bin
EP0705983A2 (en) * 1994-09-30 1996-04-10 J.E. Stork Ventilatoren B.V. Roof fan
EP0705983A3 (en) * 1994-09-30 1998-03-11 J.E. Stork Ventilatoren B.V. Roof fan
US5766073A (en) * 1997-01-23 1998-06-16 O'kelley; Charles H. Exhaust header for building ventilator fan
DE19755617A1 (en) * 1997-12-13 1999-06-17 Turbo Lufttechnik Gmbh Combined air and hot flue gas extractor fitted in roof of building
DE19755617B4 (en) * 1997-12-13 2014-02-27 TROX TLT GmbH flow channel
US6457550B1 (en) 2001-03-06 2002-10-01 Twin City Fan Companies, Ltd. Weatherproof sound attenuating device
US20130090053A1 (en) * 2010-11-12 2013-04-11 Panasonic Corporation Ventilation vent cap
US20150105012A1 (en) * 2013-10-11 2015-04-16 P-Tec Products, Inc. Vent cover
US10036566B2 (en) * 2013-10-11 2018-07-31 P-Tec Products, Inc. Vent cover
US20180066667A1 (en) * 2016-09-06 2018-03-08 Macroair Technologies, Inc. Low aspect ratio fan

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