AU545302B2 - Improvements relating to ventilators - Google Patents

Improvements relating to ventilators

Info

Publication number
AU545302B2
AU545302B2 AU76381/81A AU7638181A AU545302B2 AU 545302 B2 AU545302 B2 AU 545302B2 AU 76381/81 A AU76381/81 A AU 76381/81A AU 7638181 A AU7638181 A AU 7638181A AU 545302 B2 AU545302 B2 AU 545302B2
Authority
AU
Australia
Prior art keywords
shutter
fan
wind
windshield
closes
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.)
Ceased
Application number
AU76381/81A
Other versions
AU7638181A (en
Inventor
Raymond Alfred Frank Burtenshaw
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.)
Colt International Ltd
Original Assignee
Colt International 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 Colt International Ltd filed Critical Colt International Ltd
Publication of AU7638181A publication Critical patent/AU7638181A/en
Application granted granted Critical
Publication of AU545302B2 publication Critical patent/AU545302B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • F24F7/00—Ventilation
    • F24F7/02—Roof ventilation
    • F24F7/025—Roof ventilation with forced air circulation by means of a built-in ventilator

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Air-Flow Control Members (AREA)

Abstract

A powered, direct discharge ventilator comprises a base (B) having an extraction fan duct defined by a cylindrical wall portion (11) enclosing a fan impeller (not shown) of a fan (K) mounted on the base. A shallow windshield (D) shelters a non-return shutter (S) which closes the extraction fan duct when the fan is not operating. The shutter (S) is hinged on a pair of arms (H) to float up on the discharging airstream to take up the position shown chain-dotted in Fig. 1 when the fan is operated. When the fan is stopped, the shutter (S) closes gravitationally. To assist in holding the shutter (S) closed under high wind conditions, a wind deflector (W), carried by a bird-guard (G), directs the wind in a downwardly directed stream onto the top of the shutter (S). Where a much higher windshield is used, the wind deflector acts in a similar manner to prevent any reduction of pressure within the windshield due to the <<wind-over effect>> lifting the non-return shutter.
AU76381/81A 1980-10-16 1981-10-15 Improvements relating to ventilators Ceased AU545302B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8033414 1980-10-16
GB8033414 1980-10-16

Publications (2)

Publication Number Publication Date
AU7638181A AU7638181A (en) 1982-04-22
AU545302B2 true AU545302B2 (en) 1985-07-11

Family

ID=10516715

Family Applications (1)

Application Number Title Priority Date Filing Date
AU76381/81A Ceased AU545302B2 (en) 1980-10-16 1981-10-15 Improvements relating to ventilators

Country Status (6)

Country Link
EP (1) EP0050488B1 (en)
AT (1) ATE7956T1 (en)
AU (1) AU545302B2 (en)
DE (1) DE3164215D1 (en)
NZ (1) NZ198656A (en)
ZA (1) ZA817088B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU576778B2 (en) * 1983-08-26 1988-09-08 Michele Young Ventilator
AU591819B2 (en) * 1986-11-13 1989-12-14 Colt International Limited Improvements relating to ventilators

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108426336B (en) * 2018-05-31 2023-09-29 深圳市万居科技股份有限公司 Dual-purpose exhaust cap
CN108626834B (en) * 2018-05-31 2023-09-29 深圳市万居科技股份有限公司 Multipurpose exhaust cap
CN114831028B (en) * 2022-04-22 2023-09-01 扬州大学 Breeding device convenient to ventilate

Family Cites Families (3)

* 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
GB1061188A (en) * 1964-04-13 1967-03-08 Colt Ventilation & Heating Ltd Improvements in or relating to ventilators
GB1151191A (en) * 1965-05-19 1969-05-07 Colt Ventilation & Heating Ltd Improvements in or relating to Ventilators

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU576778B2 (en) * 1983-08-26 1988-09-08 Michele Young Ventilator
AU591819B2 (en) * 1986-11-13 1989-12-14 Colt International Limited Improvements relating to ventilators

Also Published As

Publication number Publication date
ZA817088B (en) 1982-09-29
EP0050488B1 (en) 1984-06-13
ATE7956T1 (en) 1984-06-15
EP0050488A2 (en) 1982-04-28
EP0050488A3 (en) 1982-09-08
DE3164215D1 (en) 1984-07-19
AU7638181A (en) 1982-04-22
NZ198656A (en) 1985-01-31

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