GB2202041A - Heat resistant ventilation outlet units - Google Patents

Heat resistant ventilation outlet units Download PDF

Info

Publication number
GB2202041A
GB2202041A GB08701402A GB8701402A GB2202041A GB 2202041 A GB2202041 A GB 2202041A GB 08701402 A GB08701402 A GB 08701402A GB 8701402 A GB8701402 A GB 8701402A GB 2202041 A GB2202041 A GB 2202041A
Authority
GB
United Kingdom
Prior art keywords
ventilation unit
parts
unit according
paint
heat resistant
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.)
Granted
Application number
GB08701402A
Other versions
GB2202041B (en
GB8701402D0 (en
Inventor
David James Millington
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.)
GRADWOOD Ltd
Original Assignee
GRADWOOD 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 GRADWOOD Ltd filed Critical GRADWOOD Ltd
Priority to GB8701402A priority Critical patent/GB2202041B/en
Publication of GB8701402D0 publication Critical patent/GB8701402D0/en
Publication of GB2202041A publication Critical patent/GB2202041A/en
Application granted granted Critical
Publication of GB2202041B publication Critical patent/GB2202041B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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)
  • Building Environments (AREA)
  • Air-Flow Control Members (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

There is disclosed a fan assisted ventilation unit for extracting air from the interior of a building in the event of fire and at least partly constructed from light weight materials such as glass reinforced plastics, aluminium or light gauge steel, whose durability to meet Fire Regulations is assured by a coating of intumescent paint. Damper blades 20 are provided with sufficient clearance from non moving parts to accommodate expansion of the paint to a thickness of 2.5cm. <IMAGE>

Description

VENTILATION UNITS This invention concerns ventilation units of the kind (hereinafter termed as the kind referred to) adapted to extract large volumes of air from the interior of a building and smoke laden air in the event of fire.
Fire Regulations require that units of the kind referred to are capable of continuous operation for a period of two hours at temperatures of 4000C.
To meet this specification it has been customary for such ventilation units to be constructed from steel, making them costly and heavy with attendant problems in their mounting on a factory roof or the like.
It is an object of the present invention to provide a relatively inexpensive and light weight ventilation unit which nonetheless meets the specification dictated by Fire Regulations.
According to the present invention there is provided a ventilation unit of the kind referred to characterized in that the surfaces of at least some of the parts thereof are coated with an intumescent paint.
The parts of the ventilation unit may be manufactured from any suitable material such as a glass reinforced plastics material, aluminium or relatively light gauge steel.
The invention will be further apparent from the following description with reference to the single figure of the accompanying drawing which shows a cross section through one form of ventilation unit embodying the invention.
Referring now to the drawing it will be seen that the ventilation unit comprises a cylindrical housing 10 extending upwardly from a mounting plate 11 adapted to be fitted over an aperture 12 in the roof 13 of a building. The housing 10 locates a fan impeller 14 connected by a drive shaft 15 to a drive motor 16.
The motor 16 is supported by bracket members 17 extending inwardly and downwardly from the underside of the plate 11.
Pivotted shutter members 18 are located within the housing 10 above the fan 14 and open against the influence of gravity by pivotting upwardly whenever fan 14 is operative to draw air from within the building for discharge through the housing 10.
The housing 10, shutters 18 and base plate 11 are all formed from glass reinforced plastics material whilst the bracket members 17 are formed from steel, as of course, is the impeller fan 14.
In accordance with the invention all of the glass reinforced plastics parts have those surfaces thereof which would be contacted by heated air expelled from the building in the event of fire with a coating 20 of intumescent paint. Additionally the surfaces of the bracket members 17 and casing to the motor 16 may also have a coating of intumescent paint.
We have found that a coating of intumescent paint as manufactured by Nullif ire Limited of Coventry applied at the rate of 1,800 grammes per square metre protects the parts of the ventilation unit sufficiently to provide continous operation thereof for 2 hours at temperatures of up to 4000C. This meets the specification required by Fire Regulations.
s In use at high temperatures the paint expands to a thickness of some 2.5cm and the clearances between the moving and stationary parts of the ventilation unit must be designed to accommodate for this expansion.
It will be appreciated that it is not intended to limit the invention to the above example only, many variations, such as might readily occur to one skilled in the art, being possible, without departing from the scope thereof.

Claims (7)

1. A ventilation unit of the kind referred to characterised in that at least some surfaces of at least some of the parts thereof are coated with an intumescent paint.
2. A ventilation unit according to claim 1 wherein said surfaces include at least those surfaces contacted by air from the building when the unit is operative.
3. A ventilation unit according to claim 2 wherein at least some of said coated parts are of light weight.
4. A ventilation unit according to claim 3 wherein said parts are of plastics material.
5. A ventilation unit according to claim 4 wherein said plastics material is reinforced with glass.
6. A ventilation unit according to claim 1 or claim 2 wherein said parts are of aluminium.
7. A ventilation unit according to claim 1 or claim 2 wherein said parts are of light guage steel.
GB8701402A 1987-01-22 1987-01-22 Ventilation units Expired - Fee Related GB2202041B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8701402A GB2202041B (en) 1987-01-22 1987-01-22 Ventilation units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8701402A GB2202041B (en) 1987-01-22 1987-01-22 Ventilation units

Publications (3)

Publication Number Publication Date
GB8701402D0 GB8701402D0 (en) 1987-02-25
GB2202041A true GB2202041A (en) 1988-09-14
GB2202041B GB2202041B (en) 1991-01-16

Family

ID=10611061

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8701402A Expired - Fee Related GB2202041B (en) 1987-01-22 1987-01-22 Ventilation units

Country Status (1)

Country Link
GB (1) GB2202041B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996002762A1 (en) * 1994-07-16 1996-02-01 Environmental Seals Limited Fire proofed housings for extractor fans
WO2013110516A1 (en) * 2012-01-25 2013-08-01 Ebm-Papst Mulfingen Gmbh & Co. Kg Blade wheel with intumescent coating
GB2561714A (en) * 2017-03-20 2018-10-24 Gibbons Martin Extractor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB886506A (en) * 1959-03-23 1962-01-10 Ernest Crabb Ventilator insulation
GB1342778A (en) * 1970-06-20 1974-01-03 Trox Gmbh Geb Closure device for fire panels in ventilation and air-conditioning plants
GB1368424A (en) * 1970-09-10 1974-09-25 Nat Res Dev Fireresistant structures
GB1429203A (en) * 1973-10-22 1976-03-24 Temperature Ltd Air conditioning

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB886506A (en) * 1959-03-23 1962-01-10 Ernest Crabb Ventilator insulation
GB1342778A (en) * 1970-06-20 1974-01-03 Trox Gmbh Geb Closure device for fire panels in ventilation and air-conditioning plants
GB1368424A (en) * 1970-09-10 1974-09-25 Nat Res Dev Fireresistant structures
GB1429203A (en) * 1973-10-22 1976-03-24 Temperature Ltd Air conditioning

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996002762A1 (en) * 1994-07-16 1996-02-01 Environmental Seals Limited Fire proofed housings for extractor fans
WO2013110516A1 (en) * 2012-01-25 2013-08-01 Ebm-Papst Mulfingen Gmbh & Co. Kg Blade wheel with intumescent coating
GB2561714A (en) * 2017-03-20 2018-10-24 Gibbons Martin Extractor

Also Published As

Publication number Publication date
GB2202041B (en) 1991-01-16
GB8701402D0 (en) 1987-02-25

Similar Documents

Publication Publication Date Title
EP1686315B1 (en) Fire-resistant cover for lighting fitting
GB2422191A (en) Fire Resistant Light Fitting
WO2008074583A3 (en) Ventilation hood and cooktop safety system and method
GB2202041A (en) Heat resistant ventilation outlet units
FR2699871B1 (en) Vehicle heating or air conditioning control panel.
CA2371282C (en) Paint drying system
CN113490780A (en) Fixing element for roof ventilation
US3270656A (en) Ventilator with air discharge means
CN208407995U (en) A kind of automatic adjustment air quantity vent cabinet
US5915374A (en) Zero clearance non-venting fireplace
US5285771A (en) Make-up air control system apparatus
EP1741993B1 (en) Housing of air conditioner
AU7901298A (en) Fan scroll assembly for the indoor unit of an air conditioner
DE58903187D1 (en) HEATING OR AIR CONDITIONING FOR VENTILATING THE PASSENGER ROOM OF A MOTOR VEHICLE.
EP2801762B1 (en) Cooking oven comprising a side opening door and a damper of the door movement
CN104265133A (en) Smoke discharge and explosion venting window
EP0949096A3 (en) Vehicle with a heating and ventilating or air conditioning device
FI69770C (en) SPJAELLREGLERINGSANORDNING
US20040072538A1 (en) Ventilation apparatus with integral intumescent fire and smoke stop and method of manufacturing thereof
US3859901A (en) Recirculating ventilating hood
FI92951C (en) Shaft for elevator
EP0436239B1 (en) Ventilation system
EP3561380B1 (en) Air exhausting mechanism for mobile illuminating lighthouse
CN221542679U (en) Material management strorage device
CN204098731U (en) A kind of smoke evacuation explosion release window

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930122