GB910474A - Improvements in and relating to fans - Google Patents

Improvements in and relating to fans

Info

Publication number
GB910474A
GB910474A GB54560A GB54560A GB910474A GB 910474 A GB910474 A GB 910474A GB 54560 A GB54560 A GB 54560A GB 54560 A GB54560 A GB 54560A GB 910474 A GB910474 A GB 910474A
Authority
GB
United Kingdom
Prior art keywords
shutter
ring
plates
plate
locked
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
Application number
GB54560A
Inventor
John Kenneth Downing
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.)
Vent Axia Ltd
Original Assignee
Vent Axia Ltd
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 Vent Axia Ltd filed Critical Vent Axia Ltd
Priority to GB54560A priority Critical patent/GB910474A/en
Priority to DEV19948A priority patent/DE1223128B/en
Priority to FR848983A priority patent/FR1285936A/en
Priority to BE598883A priority patent/BE598883A/en
Publication of GB910474A publication Critical patent/GB910474A/en
Expired legal-status Critical Current

Links

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
    • F24F13/16—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of parallelly-movable plates
    • 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
    • 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
    • F24F13/105—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers composed of diaphragms or segments
    • 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
    • F24F13/142—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre using pivoting blades with intersecting axles
    • 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
    • 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
    • F24F2013/1453—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 cables, e.g. bowden cables

Landscapes

  • 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)
  • Air-Flow Control Members (AREA)

Abstract

910,474. Ventilators. VENT-AXIA Ltd. Jan. 5, 1961 [Jan. 6, 1960], No. 545/60. Class 137. In a shutter device comprising an open-work support member adapted to be secured in the housing of a ventilating fan, especially at the inlet side of the impeller, a plurality of shutter plates is pivotally mounted adjacent one another and each is out of balance whereby they close automatically when the velocity of the outside air is greater than the induced air flow, and when there is no induced air flow. A manual means is also provided in the shutter device, whereby the plates can be locked in a closed position and an open position. The shutter device comprises a spider 20 with an outer ring 21 secured to the interior of the fan casing 28, and an inner ring 23 secured about the housing 22 of an electric motor 24 which drives an impeller 44. The shutter plates 64 are pivotally mounted on the axles 62 and in the lower half of the device carry counterweights 66 to ensure proper closure of the plates. Referring to Figs. 5 and 6, one T-member comprising a stem 58 and a bar 60 is each secured to a radial arm 30 of the spider 20. Each T-member is formed with a projection 70, and a ring 72 guided by a number of ribs 41 on the exterior face of a frame 40 of the shutter device is free to move over these projections. The ring 72 carries a pair of spaced abutments 74 and 76 which are adapted to coact with a cam member 78 on each shutter plate 64. The angular position of the ring 72 can be changed manually by pulling either of two cords 82. In Figs. 5 and 6, the plate 64 is in the closed position and is locked there by the abutment 76 engaging the cam 78. Two other positions of the ring 72 show the abutment 74 engaging the cam 78 with the plate 64 locked in an open position, Figs. 7 and 8 (not shown), and a position when the cam 78 is clear of the two abutments 74 and 76 and the shutter plate 64 is free to react automatically to air pressure changes, Figs. 9 and 10 (not shown). In another embodiment, Figs. 11 to 16 (not shown), the shutter plates can be locked in a fully open position for one extreme movement of the ring 72, and at the other extreme, the shutter reacts automatically to air pressure changes. In an alternative embodiment (not illustrated) the shutter plates are pivoted about radial axes offset with respect to the radial axis of symmetry of each plate. Specification 910,475 is referred to.
GB54560A 1960-01-06 1960-01-06 Improvements in and relating to fans Expired GB910474A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB54560A GB910474A (en) 1960-01-06 1960-01-06 Improvements in and relating to fans
DEV19948A DE1223128B (en) 1960-01-06 1961-01-05 Shutter designed for fans
FR848983A FR1285936A (en) 1960-01-06 1961-01-06 Vane shut-off device for embedded fan
BE598883A BE598883A (en) 1960-01-06 1961-01-06 Improvements relating to fans

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54560A GB910474A (en) 1960-01-06 1960-01-06 Improvements in and relating to fans

Publications (1)

Publication Number Publication Date
GB910474A true GB910474A (en) 1962-11-14

Family

ID=9706247

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54560A Expired GB910474A (en) 1960-01-06 1960-01-06 Improvements in and relating to fans

Country Status (4)

Country Link
BE (1) BE598883A (en)
DE (1) DE1223128B (en)
FR (1) FR1285936A (en)
GB (1) GB910474A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2508423A (en) * 2012-11-30 2014-06-04 Greenwood Air Man Ltd A fan installed in a building component
GB2512043B (en) * 2013-03-05 2019-07-31 Vent Axia Group Ltd Extractor fan

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8002743L (en) * 1980-04-11 1981-10-12 Pax Electro Prod Ab ADJUSTABLE GAMING DEVICE
GB2265001A (en) * 1992-03-12 1993-09-15 Hunter International A backdraught shutter for a ventilating fan

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE497929C (en) * 1930-05-15 Friedrich Maier Ventilation flap that opens automatically under the influence of an air flow and closes automatically after the air flow has stopped
US2687687A (en) * 1951-10-27 1954-08-31 Pruden Products Co Back draft damper for exhaust fans

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2508423A (en) * 2012-11-30 2014-06-04 Greenwood Air Man Ltd A fan installed in a building component
WO2014083356A1 (en) * 2012-11-30 2014-06-05 Greenwood Air Management Limited Fan with window kit
GB2512043B (en) * 2013-03-05 2019-07-31 Vent Axia Group Ltd Extractor fan

Also Published As

Publication number Publication date
FR1285936A (en) 1962-03-02
BE598883A (en) 1961-05-02
DE1223128B (en) 1966-08-18

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