EP0314201A2 - Improvements relating to ventilators - Google Patents
Improvements relating to ventilators Download PDFInfo
- Publication number
- EP0314201A2 EP0314201A2 EP88120252A EP88120252A EP0314201A2 EP 0314201 A2 EP0314201 A2 EP 0314201A2 EP 88120252 A EP88120252 A EP 88120252A EP 88120252 A EP88120252 A EP 88120252A EP 0314201 A2 EP0314201 A2 EP 0314201A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- flap
- prop
- ventilator
- fire
- opening
- 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
Links
- 238000009423 ventilation Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 239000000779 smoke Substances 0.000 description 4
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/24—Operating or controlling mechanisms
- A62C2/246—Operating or controlling mechanisms having non-mechanical actuators
- A62C2/247—Operating or controlling mechanisms having non-mechanical actuators electric
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/002—Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means
- E05F1/006—Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means by emergency conditions, e.g. fire
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
- E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
- E05F1/1292—Mechanisms in the shape of hinges or pivots, operated by springs with a gas spring
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/627—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by flexible elongated pulling elements, e.g. belts, chains or cables
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/13—Type of wing
- E05Y2900/148—Windows
Definitions
- the present invention comprises improvements relating to ventilators and concerns controllable ventilators which are required to open to exhaust heat, smoke and fumes from a building in the event of a fire and to close to conserve heat in the building under normal conditions.
- such a ventilator comprises an opening flap ventilator for buildings having a frame defining a ventilation opening, a hinged ventilation flap for closing the opening, and springs for opening the ventilation flap characterized by a fused fire prop pivotally mounted on the flap to swing round to engage an abutment on the frame to prop the flap open in the event of a fire which might otherwise cause failure of the springs.
- the ventilator may be opened by its springs in the event of a fire, and this may be done automatically in response to the onset of a fire condition using a suitable fire and/or smoke detector.
- the fused prop then acts as an additional safety measure to prevent reclosing of the flap.
- the ventilator has a hollow frame 10 and a single, bottom hung, outwardly hingeing ventilator flap 11 to provide for day-to-day and for fire ventilation hinged to the frame at 12.
- Gas springs 13, one at each side, are provided for opening the flap 11, the flap then assuming its substantially vertical position as shown in Fig. 1.
- An electric motor-gear drive mechanism 14 is installed inside a hollow, top frame member 10 a of the ventilator about midway between the side frame members 10 b of the frame 10.
- the bottom frame member is indicated at 10 c .
- the unit 14 comprises an electric motor 15 and a gear drive mechanism 16 housed in a gear box housing 17 adapted for flange mounting at 18 inside the ventilator top frame member 10 a .
- the unit 14 has an output drive in the form of a winch pulley generally indicated at 20 and disposed laterally to one side of the unit which is generally elongated to fit within the hollow top frame member 10 a .
- the pulley 20 is fixedly carried by an output drive shaft 22 which also carries the final gear 24 of a spur gear set 24, 26, 28 contained within the housing 17.
- the gears 26 and 28 of the spur gear set are mounted on further drive shafts 30, 32.
- the drive shafts 22, 30 run in ball races 34 and 36 carried by the housing 17.
- the drive shaft 32 runs at one end in a ball race 38 carried by the housing 17, the shaft 32 also being rotatably supported concentrically within a hollow drive shaft 40 which runs in a ball race 42 carried by the housing 17.
- the motor shaft 44 fixedly carries a worm 46 which drives a worm wheel 48 fixedly carried by the shaft 40.
- the shafts 32, 40 carry laterally outside the housing 17, on the side opposite the winch pulley 20, the two elements 50 and 52 respectively of an electromagnetic clutch 54.
- the clutch 54 when energised, drivably engages the drive shaft 40 with the drive shaft 32 and operation of the motor 15 in one direction or the other drives the pulley 20 to open or close the ventilator.
- the clutch 54 is incorporated in a separate electrical circuit, controlled by automatic fire response means, which maintains the clutch energised so long as a power supply is available and no fire response is required, so that in the event of a power failure, the ventilator opens automatically and cannot fail to function as a fire ventilator under such conditions.
- the electrical circuit of the clutch 54 includes a smoke or fire detecting device operable to de-energise the clutch to release the ventilation flap for automatic opening by its gas-springs in the event of a fire being detected.
- the clutch may be incorporated in the electrical circuit of the motor so that the clutch remains energised so long as an electrical power supply is available to operate the motor and open the ventilator in response to the operation of a smoke or fire detecting device. With this arrangement the clutch operates simply as a fail safe device.
- the ventilator may be opened by its gas-springs 13, upon de-energisation of the clutch 54, and closed by operation of the motor 15, the clutch 54 then being energised.
- the ventilator may be opened and closed by operation of the motor.
- a fused fire prop 85 (see Fig. 1), pivotally mounted on the frame of the flap 11 swings downwardly to engage an abutment 86 on the frame 10 to prop the flap 11 open in the event of a fire which might otherwise cause the gas-springs 13 to buckle.
- the prop 85 is formed in two sections normally soldered together as at 87. The prop sections may be joined together with a separate fusible joint mechanically fastened to the sections of the prop.
- a spring 88 may be provided to swing the prop downwardly and the flap 11 may carry a stop 90 to arrest the prop in its operative position.
- the electric motor 15 has an operating voltage of 24V DC, an output of 80 watts and a normal operating speed of 3,200 r.p.m.
- the clutch 54 has an operating voltage of 24 volts DC.
- the output torque of the gear drive mechanism 16 is 50 Nm at a speed of approximately 7 r.p.m.
- the worm gear set has a gear ratio of 48 to 1 and the spur gear set a gear ratio of 10 to 1.
- the cable 76 is 2 mm diameter stainless steel wire.
- the electric motor-gear drive units 14 which has been described may be incorporated in other kinds of controllable ventilators used for fire ventilation purposes, the cable 76 being connected to close, and to control the opening of, e.g. a pair of hinged, oppositely opening ventilation flaps in a roof mounted ventilator to close, and to control the opening of, the louvres of a controllable louvred ventilator by spring action.
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Air-Flow Control Members (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
- The present invention comprises improvements relating to ventilators and concerns controllable ventilators which are required to open to exhaust heat, smoke and fumes from a building in the event of a fire and to close to conserve heat in the building under normal conditions.
- According to the present invention, such a ventilator comprises an opening flap ventilator for buildings having a frame defining a ventilation opening, a hinged ventilation flap for closing the opening, and springs for opening the ventilation flap characterized by a fused fire prop pivotally mounted on the flap to swing round to engage an abutment on the frame to prop the flap open in the event of a fire which might otherwise cause failure of the springs.
- With this arrangement, the ventilator may be opened by its springs in the event of a fire, and this may be done automatically in response to the onset of a fire condition using a suitable fire and/or smoke detector.
- The fused prop then acts as an additional safety measure to prevent reclosing of the flap.
- A specific embodiment of ventilator in accordance with the present invention will now be described by way of example, and not by way of limitation, with reference to the accompanying drawings in which :-
- FIG. 1 is a cross-section of a ventilator in accordance with the present invention in an inclined mounted position and shown in its open and closed positions;
- FIG. 2 shows an electric motor-gear drive mechanism of the ventilator with its gearbox housing in cross-section; and
- FIG. 3 is a view from the right hand end in Fig. 2.
- With reference now to the accompanying drawings, the ventilator has a
hollow frame 10 and a single, bottom hung, outwardly hingeingventilator flap 11 to provide for day-to-day and for fire ventilation hinged to the frame at 12. Gas springs 13, one at each side, are provided for opening theflap 11, the flap then assuming its substantially vertical position as shown in Fig. 1. An electric motor-gear drive mechanism 14 is installed inside a hollow,top frame member 10a of the ventilator about midway between the side frame members 10b of theframe 10. The bottom frame member is indicated at 10c. Theunit 14 comprises anelectric motor 15 and agear drive mechanism 16 housed in agear box housing 17 adapted for flange mounting at 18 inside the ventilatortop frame member 10a. Theunit 14 has an output drive in the form of a winch pulley generally indicated at 20 and disposed laterally to one side of the unit which is generally elongated to fit within the hollowtop frame member 10a. Thepulley 20 is fixedly carried by anoutput drive shaft 22 which also carries thefinal gear 24 of aspur gear set housing 17. Thegears further drive shafts ball races housing 17. Thedrive shaft 32 runs at one end in aball race 38 carried by thehousing 17, theshaft 32 also being rotatably supported concentrically within a hollow drive shaft 40 which runs in aball race 42 carried by thehousing 17. Themotor shaft 44 fixedly carries aworm 46 which drives aworm wheel 48 fixedly carried by the shaft 40. Theshafts 32, 40 carry laterally outside thehousing 17, on the side opposite thewinch pulley 20, the twoelements electromagnetic clutch 54. Theclutch 54, when energised, drivably engages the drive shaft 40 with thedrive shaft 32 and operation of themotor 15 in one direction or the other drives thepulley 20 to open or close the ventilator. - In the closed condition of the ventilation flap in which the flap assumes its inclined condition as seen in Fig. 1, the motor is de-energised but the
electromagnetic clutch 54 remains energised by means of a separate electrical circuit. The ventilation flap is secured closed when in its closed condition by the worm gear set 46, 48 which is of a gear ratio which is incapable of being back driven. Thus, thegear drive mechanism 16 cannot be overhauled by tensioning the cable whilst theclutch 54 is energised. - In one arrangement, the
clutch 54 is incorporated in a separate electrical circuit, controlled by automatic fire response means, which maintains the clutch energised so long as a power supply is available and no fire response is required, so that in the event of a power failure, the ventilator opens automatically and cannot fail to function as a fire ventilator under such conditions. In the present example, the electrical circuit of theclutch 54 includes a smoke or fire detecting device operable to de-energise the clutch to release the ventilation flap for automatic opening by its gas-springs in the event of a fire being detected. However, the clutch may be incorporated in the electrical circuit of the motor so that the clutch remains energised so long as an electrical power supply is available to operate the motor and open the ventilator in response to the operation of a smoke or fire detecting device. With this arrangement the clutch operates simply as a fail safe device. - For day-to-day ventilation purposes, the ventilator may be opened by its gas-
springs 13, upon de-energisation of theclutch 54, and closed by operation of themotor 15, theclutch 54 then being energised. Alternatively the ventilator may be opened and closed by operation of the motor. - In accordance with the invention, a fused fire prop 85 (see Fig. 1), pivotally mounted on the frame of the
flap 11 swings downwardly to engage anabutment 86 on theframe 10 to prop theflap 11 open in the event of a fire which might otherwise cause the gas-springs 13 to buckle. Theprop 85 is formed in two sections normally soldered together as at 87. The prop sections may be joined together with a separate fusible joint mechanically fastened to the sections of the prop. Aspring 88 may be provided to swing the prop downwardly and theflap 11 may carry astop 90 to arrest the prop in its operative position. - In the example described with reference to the drawings, the
electric motor 15 has an operating voltage of 24V DC, an output of 80 watts and a normal operating speed of 3,200 r.p.m. Theclutch 54 has an operating voltage of 24 volts DC. The output torque of thegear drive mechanism 16 is 50 Nm at a speed of approximately 7 r.p.m. The worm gear set has a gear ratio of 48 to 1 and the spur gear set a gear ratio of 10 to 1. Thecable 76 is 2 mm diameter stainless steel wire. - It will be appreciated that the electric motor-
gear drive units 14 which has been described may be incorporated in other kinds of controllable ventilators used for fire ventilation purposes, thecable 76 being connected to close, and to control the opening of, e.g. a pair of hinged, oppositely opening ventilation flaps in a roof mounted ventilator to close, and to control the opening of, the louvres of a controllable louvred ventilator by spring action.
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88120252T ATE84232T1 (en) | 1986-11-25 | 1987-11-25 | VENTILATION FLAP. |
EP88120252A EP0314201B1 (en) | 1986-11-25 | 1987-11-25 | Improvements relating to ventilators |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8628112 | 1986-11-25 | ||
GB868628112A GB8628112D0 (en) | 1986-11-25 | 1986-11-25 | Ventilators |
GB878723551A GB8723551D0 (en) | 1987-10-07 | 1987-10-07 | Ventilators |
GB8723551 | 1987-10-07 | ||
EP88120252A EP0314201B1 (en) | 1986-11-25 | 1987-11-25 | Improvements relating to ventilators |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87310382.4 Division | 1987-11-25 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0314201A2 true EP0314201A2 (en) | 1989-05-03 |
EP0314201A3 EP0314201A3 (en) | 1990-02-07 |
EP0314201B1 EP0314201B1 (en) | 1993-01-07 |
Family
ID=27231363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88120252A Expired - Lifetime EP0314201B1 (en) | 1986-11-25 | 1987-11-25 | Improvements relating to ventilators |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0314201B1 (en) |
AT (1) | ATE84232T1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0405959A1 (en) * | 1989-06-29 | 1991-01-02 | Colt International B.V. | Hatch for a roof or roofing |
EP0430720A2 (en) * | 1989-12-01 | 1991-06-05 | Colt International Limited | Improvements relating to ventilators |
US6991536B2 (en) | 2000-12-01 | 2006-01-31 | Kent Tooling And Components Limited | Air flow controller and fire damper in an air flow duct |
IT201900003499A1 (en) * | 2019-03-11 | 2020-09-11 | Iveco Spa | VEHICLE EQUIPPED WITH SAFETY SYSTEM FOR THERMAL RUNAWAY |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3323438A (en) * | 1965-08-23 | 1967-06-06 | Western Eng & Mfg Co | Explosion and fire release ventilator |
US3728956A (en) * | 1971-05-24 | 1973-04-24 | Jenn Air Corp | Smoke and heat relief vent |
DE2264267A1 (en) * | 1972-01-12 | 1973-07-26 | Ferem | DEVICE FOR AUTOMATICALLY OPENING A SMOKE EXHAUST IN THE EVENT OF A FIRE |
FR2254183A5 (en) * | 1973-12-11 | 1975-07-04 | Sofrair | Ventilation duct flap with fire lock - strip melts to release latch to prevent remote flap operation |
-
1987
- 1987-11-25 EP EP88120252A patent/EP0314201B1/en not_active Expired - Lifetime
- 1987-11-25 AT AT88120252T patent/ATE84232T1/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3323438A (en) * | 1965-08-23 | 1967-06-06 | Western Eng & Mfg Co | Explosion and fire release ventilator |
US3728956A (en) * | 1971-05-24 | 1973-04-24 | Jenn Air Corp | Smoke and heat relief vent |
DE2264267A1 (en) * | 1972-01-12 | 1973-07-26 | Ferem | DEVICE FOR AUTOMATICALLY OPENING A SMOKE EXHAUST IN THE EVENT OF A FIRE |
FR2254183A5 (en) * | 1973-12-11 | 1975-07-04 | Sofrair | Ventilation duct flap with fire lock - strip melts to release latch to prevent remote flap operation |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0405959A1 (en) * | 1989-06-29 | 1991-01-02 | Colt International B.V. | Hatch for a roof or roofing |
EP0430720A2 (en) * | 1989-12-01 | 1991-06-05 | Colt International Limited | Improvements relating to ventilators |
EP0430720A3 (en) * | 1989-12-01 | 1992-09-02 | Colt International Limited | Improvements relating to ventilators |
US6991536B2 (en) | 2000-12-01 | 2006-01-31 | Kent Tooling And Components Limited | Air flow controller and fire damper in an air flow duct |
IT201900003499A1 (en) * | 2019-03-11 | 2020-09-11 | Iveco Spa | VEHICLE EQUIPPED WITH SAFETY SYSTEM FOR THERMAL RUNAWAY |
EP3708754A1 (en) * | 2019-03-11 | 2020-09-16 | Iveco S.p.A. | Vehicle equipped with a thermal runaway safety system |
US11946287B2 (en) | 2019-03-11 | 2024-04-02 | Iveco S.P.A. | Vehicle provided with a security system for thermal runaway |
Also Published As
Publication number | Publication date |
---|---|
EP0314201B1 (en) | 1993-01-07 |
ATE84232T1 (en) | 1993-01-15 |
EP0314201A3 (en) | 1990-02-07 |
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