WO1997001736A1 - Air extraction system - Google Patents

Air extraction system Download PDF

Info

Publication number
WO1997001736A1
WO1997001736A1 PCT/GB1996/001555 GB9601555W WO9701736A1 WO 1997001736 A1 WO1997001736 A1 WO 1997001736A1 GB 9601555 W GB9601555 W GB 9601555W WO 9701736 A1 WO9701736 A1 WO 9701736A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
air
air inlet
smoke detector
room
Prior art date
Application number
PCT/GB1996/001555
Other languages
French (fr)
Inventor
Peter Popek
Original Assignee
Peter Popek
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 Peter Popek filed Critical Peter Popek
Priority to AU62369/96A priority Critical patent/AU6236996A/en
Publication of WO1997001736A1 publication Critical patent/WO1997001736A1/en

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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • 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
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/50—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by odorisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke

Definitions

  • the present invention relates to an air extraction system, particularly, though not exclusively, for installation in public houses and similar establishments.
  • apparatus for extracting air from a room to the exterior comprising a first fan adapted to draw air into the apparatus from the room through a fir ⁇ t air inlet, duct means for removing said air to the exterior, a smoke detector operatively connected to said first fan to switch the first fan on upon activation of the smoke detector, a second fan adapted to recirculate air through a second air inlet/outlet and means for dispensing fragrance and/or deodoriser into said recirculating air.
  • the second fan is adapted to run continuously, whereas the first fan only runs when the smoke detector is activated.
  • the fragrance/deodoriser is supplied in liquid, solid or gel form in one or two containers held within the apparatus, adjacent or close to said second air inlet/outlet.
  • These containers are preferably large enough to last for approximately twelve months based on continuous twenty four hour operation, and are readily exchanged for new ones when empty.
  • the whole system is mains powered, the first fan being relatively high powered, driven by an EBM motor, and the second fan being much less powerful.
  • the air which is ducted from the room is replaced naturally from windows, doors, air vents and similar.
  • the first and second air inlets include grills comprising double deflectors, the deflectors of the first air inlet being inclined oppositely to the deflectors of the second air inlet/outlet, thus effectively separating the air into two airstreams - one going through the first fan and the duct, and the other being recirculated by the second fan.
  • both fans and the smoke detector are contained within a rectangular box-shaped housing, the main body of which would be located above the ceiling of the room, passing through a hole specially made for the purpose.
  • the housing would be fitted within this hole in such a manner that the air inlet grills are substantially flush with the ceiling.
  • the housing is divided into two compartments - a first compartment containing the first fan and a second compartment containing the second fan and the fragrance/deodoriser containers.
  • the smoke alarm can conveniently be fitted within the divide between the two compartments, with the sensor element of the detector protruding slightly below the level of the grills.
  • the ducting can conveniently be taken through a suitable hole in the wall, or between the ceiling joists.
  • Figure 1 is a partially cut-away vertical section through the apparatus
  • Figure 2 is a schematic showing how the housing is secured to the ceiling
  • Figure 3 is a plan view of the apparatus from beneath
  • Figure 4 illustrates the electrical connections to the smoke detector and first fan.
  • apparatus 10 comprises a rectangular box shaped housing 12 having a hole 12 in one of the short sides, and including a facia incorporating two separate grills 24, 26.
  • a smoke detector 28 is positioned between the two grills, the body of the smoke detector being contained within the housing 12.
  • the grill 24 defines a first air inlet to a fan 16 driven by an EBM motor 18, and the grill 26 defines a second air inlet/outlet to a second fan 20, which may conveniently be a computer cooling fan.
  • the sole purpose of fan 20, which is designed to run continuously all the time the apparatus is powered on, is to draw air in through grill 26, pass it over canisters 22 of fragrance/deodoriser, and push it out again through the same grill 26, thus re-circulating the air.
  • the output of the smoke detector 28 is electrically connected to the motor 18 of the fan 16, so that the fan 16 only operates when the detector 28 is activated.
  • a light 30 indicates when the detector 28 is activated.
  • Ducting 14 is connected to hole 12a via a bulkhead fitting, for the purpose of carrying away stale air drawn into the apparatus via fan 16.
  • the installation is simple - a hole is cut into the ceiling of the room, and the housing 12 is pushed up into the ceiling void through the hole, until the grills 24, 26 are flush with the ceiling. Battens 13 are then used to bolt the housing 12 to the edge of the hole in the ceiling, the main body of the housing 12 being accommodated between the ceiling beams 14.
  • the apparatus is left powered on, the fan 16 running intermittently as required, and the fan 20 running continuously, fragrancing and/or deodorising the air.
  • the smoke detector 28 is connected to a 0-18 volts DC electrical supply, and the output of the smoke detector 28 is fed to an electrical relay 32 operating at 240 volts AC. This in turn activates a fan contactor 34 operating at 240 volts AC, which switches on the first fan 16.
  • the smoke detector output for clean air is 0 volts, with smoke triggering an output of between 6 and 12 volts, 300 mA

Abstract

Apparatus (10) for extracting air from a room to the exterior comprises a first fan (16) adapted to draw air into the apparatus from the room through a first air inlet (24), duct means (14) for removing said air to the exterior, a smoke detector (28) operatively connected to said first fan to switch the first fan on upon activation of the smoke detector, a second fan (20) adapted to recirculate air through a second air inlet/outlet (26) and means for dispensing fragance and/or deodoriser (22) into said recirculating air.

Description

AIR EXTRACTION SYSTEM
The present invention relates to an air extraction system, particularly, though not exclusively, for installation in public houses and similar establishments.
According to the present invention there is provided apparatus for extracting air from a room to the exterior, the apparatus comprising a first fan adapted to draw air into the apparatus from the room through a firεt air inlet, duct means for removing said air to the exterior, a smoke detector operatively connected to said first fan to switch the first fan on upon activation of the smoke detector, a second fan adapted to recirculate air through a second air inlet/outlet and means for dispensing fragrance and/or deodoriser into said recirculating air.
Preferably, the second fan is adapted to run continuously, whereas the first fan only runs when the smoke detector is activated.
Conveniently, the fragrance/deodoriser is supplied in liquid, solid or gel form in one or two containers held within the apparatus, adjacent or close to said second air inlet/outlet. These containers are preferably large enough to last for approximately twelve months based on continuous twenty four hour operation, and are readily exchanged for new ones when empty.
Preferably, the whole system is mains powered, the first fan being relatively high powered, driven by an EBM motor, and the second fan being much less powerful.
The air which is ducted from the room is replaced naturally from windows, doors, air vents and similar.
The combination of continuous fragrancing/deodorising and extraction of smoky air as required results in a healthier, more pleasant environment with a minimum of trouble and noise from the operation of the extraction system. Once powered on, the system can be left on twenty four hours a day.
Preferably, the first and second air inlets include grills comprising double deflectors, the deflectors of the first air inlet being inclined oppositely to the deflectors of the second air inlet/outlet, thus effectively separating the air into two airstreams - one going through the first fan and the duct, and the other being recirculated by the second fan.
Conveniently, both fans and the smoke detector are contained within a rectangular box-shaped housing, the main body of which would be located above the ceiling of the room, passing through a hole specially made for the purpose. The housing would be fitted within this hole in such a manner that the air inlet grills are substantially flush with the ceiling.
Preferably, the housing is divided into two compartments - a first compartment containing the first fan and a second compartment containing the second fan and the fragrance/deodoriser containers.
The smoke alarm can conveniently be fitted within the divide between the two compartments, with the sensor element of the detector protruding slightly below the level of the grills.
The ducting can conveniently be taken through a suitable hole in the wall, or between the ceiling joists.
An embodiment of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:-
Figure 1 is a partially cut-away vertical section through the apparatus, Figure 2 is a schematic showing how the housing is secured to the ceiling,
Figure 3 is a plan view of the apparatus from beneath, and
Figure 4 illustrates the electrical connections to the smoke detector and first fan.
Referring to the drawings, apparatus 10 according to the present invention comprises a rectangular box shaped housing 12 having a hole 12 in one of the short sides, and including a facia incorporating two separate grills 24, 26. A smoke detector 28 is positioned between the two grills, the body of the smoke detector being contained within the housing 12.
The grill 24 defines a first air inlet to a fan 16 driven by an EBM motor 18, and the grill 26 defines a second air inlet/outlet to a second fan 20, which may conveniently be a computer cooling fan. The sole purpose of fan 20, which is designed to run continuously all the time the apparatus is powered on, is to draw air in through grill 26, pass it over canisters 22 of fragrance/deodoriser, and push it out again through the same grill 26, thus re-circulating the air.
The output of the smoke detector 28 is electrically connected to the motor 18 of the fan 16, so that the fan 16 only operates when the detector 28 is activated. A light 30 indicates when the detector 28 is activated.
Ducting 14 is connected to hole 12a via a bulkhead fitting, for the purpose of carrying away stale air drawn into the apparatus via fan 16.
The installation is simple - a hole is cut into the ceiling of the room, and the housing 12 is pushed up into the ceiling void through the hole, until the grills 24, 26 are flush with the ceiling. Battens 13 are then used to bolt the housing 12 to the edge of the hole in the ceiling, the main body of the housing 12 being accommodated between the ceiling beams 14.
Once inserted through the hole in the ceiling, most of the rest of the installation can be carried out from above. This involves installing the ducting 14 through a convenient hole or space to the exterior, and making the electrical connections.
Once the system is switched on at the mains, the apparatus is left powered on, the fan 16 running intermittently as required, and the fan 20 running continuously, fragrancing and/or deodorising the air.
As can be seen from Figure 4, the smoke detector 28 is connected to a 0-18 volts DC electrical supply, and the output of the smoke detector 28 is fed to an electrical relay 32 operating at 240 volts AC. This in turn activates a fan contactor 34 operating at 240 volts AC, which switches on the first fan 16. The smoke detector output for clean air is 0 volts, with smoke triggering an output of between 6 and 12 volts, 300 mA

Claims

1. Apparatus for extracting air from a room to the exterior, the apparatus comprising a first fan adapted to draw air into the apparatus from the room through a first air inlet, duct means for removing said air to the exterior, a smoke detector operatively connected to said first fan to switch the first fan on upon activation of the smoke detector, a second fan adapted to recirculate air through a second air inlet/outlet and means for dispensing fragrance and/or deodoriser into said recirculating air.
2. Apparatus according to Claim 1, wherein the second fan is adapted to run continuously, whereas the firεt fan only runs when the smoke detector is activated.
3. Apparatuε according to Claim 1 or Claim 2, wherein the fragrance/deodoriεer is supplied in liquid, solid or gel form in one or two containers held within the apparatus, adjacent or close to said second air inlet/outlet.
4. Apparatus according to any of the preceding Claims, wherein the apparatus is mains powered, the first fan being relatively high powered, driven by an EBM motor, and the second fan being much less powerful.
5. Apparatus according to any of the preceding Claims, adapted for continuous operation.
6. Apparatus according to any of the preceding Claims, wherein the first and second air inlets include grills comprising double deflectors, the deflectors of the first air inlet being inclined oppositely to the deflectors of the second air inlet/outlet, thus effectively separating the air into two airstreams - one going through the first fan and the duct, and the other being recirculated by the second fan.
7. Apparatus according to any of the preceding Claims, wherein both fans and the smoke detector are contained within a rectangular box-shaped housing, the main body of which would be located above the ceiling of the room, passing through a hole specially made for the purpose.
8. Apparatuε according to Claim 7, wherein the grilleε are either integral with said housing or are fixed thereto.
9. Apparatus according to Claim 7 or 8, wherein the housing is divided into two compartments - a first compartment containing the first fan and a second compartment containing the second fan and the fragrance/deodoriser containers.
10. Apparatus according to Claim 9, wherein the smoke alarm is fitted within the divide between the two compartments, with the sensor element of the detector protruding slightly below the level of the grills.
PCT/GB1996/001555 1995-06-28 1996-06-27 Air extraction system WO1997001736A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU62369/96A AU6236996A (en) 1995-06-28 1996-06-27 Air extraction system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9513155.3A GB9513155D0 (en) 1995-06-28 1995-06-28 Air extraction system
GB9513155.3 1995-06-28

Publications (1)

Publication Number Publication Date
WO1997001736A1 true WO1997001736A1 (en) 1997-01-16

Family

ID=10776799

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1996/001555 WO1997001736A1 (en) 1995-06-28 1996-06-27 Air extraction system

Country Status (3)

Country Link
AU (1) AU6236996A (en)
GB (1) GB9513155D0 (en)
WO (1) WO1997001736A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2354623A (en) * 1999-09-25 2001-03-28 Innovative Products Ltd Smoke extractor system
GB2357142A (en) * 1999-12-07 2001-06-13 Ray Hudson Ltd Ventilation apparatus
EP2362153A1 (en) * 2002-03-25 2011-08-31 Meltem Wärmerückgewinnung GmbH & Co. KG Air exchanging device
FR3009067A1 (en) * 2013-07-29 2015-01-30 Snecma SELECTIVE SUCTION SYSTEM AND SELECTIVE SUCTION METHOD

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819551A (en) * 1988-01-04 1989-04-11 John Vole Safety system for smoke and fumes
US5154893A (en) * 1989-12-15 1992-10-13 Masuda Harmo K.K. Air circulator
US5252030A (en) * 1991-10-18 1993-10-12 Matsushita Seiko Co., Ltd. Automatic operation apparatus for ventilating fan
US5259816A (en) * 1992-05-18 1993-11-09 Ke C Ventilating apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819551A (en) * 1988-01-04 1989-04-11 John Vole Safety system for smoke and fumes
US5154893A (en) * 1989-12-15 1992-10-13 Masuda Harmo K.K. Air circulator
US5252030A (en) * 1991-10-18 1993-10-12 Matsushita Seiko Co., Ltd. Automatic operation apparatus for ventilating fan
US5259816A (en) * 1992-05-18 1993-11-09 Ke C Ventilating apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2354623A (en) * 1999-09-25 2001-03-28 Innovative Products Ltd Smoke extractor system
GB2357142A (en) * 1999-12-07 2001-06-13 Ray Hudson Ltd Ventilation apparatus
GB2357142B (en) * 1999-12-07 2003-12-31 Ray Hudson Ltd Ventilation apparatus
EP2362153A1 (en) * 2002-03-25 2011-08-31 Meltem Wärmerückgewinnung GmbH & Co. KG Air exchanging device
EP2365258A1 (en) * 2002-03-25 2011-09-14 Meltem Wärmerückgewinnung GmbH & Co. KG Air exchanging device
FR3009067A1 (en) * 2013-07-29 2015-01-30 Snecma SELECTIVE SUCTION SYSTEM AND SELECTIVE SUCTION METHOD

Also Published As

Publication number Publication date
AU6236996A (en) 1997-01-30
GB9513155D0 (en) 1995-08-30

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