EP0436239B1 - Ventilation system - Google Patents
Ventilation system Download PDFInfo
- Publication number
- EP0436239B1 EP0436239B1 EP90203062A EP90203062A EP0436239B1 EP 0436239 B1 EP0436239 B1 EP 0436239B1 EP 90203062 A EP90203062 A EP 90203062A EP 90203062 A EP90203062 A EP 90203062A EP 0436239 B1 EP0436239 B1 EP 0436239B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ventilation
- louvres
- flap
- fixed
- flaps
- 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 - Lifetime
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Images
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
-
- 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
- F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae
Definitions
- the invention concerns a ventilation system to ventilate spaces with natural draught.
- the ventilation system is used on roofs or in walls of industrial buildings.
- the ventilation system is equipped to ventilate spaces while precipitation is caught in extrusions with gutters and where the in-between distance of the louvres and flaps prohibit the weather entries to pass along the gutters and enter the ventilated spaces.
- the ventilation system provides the possibillity to open the flaps completely to obtain a maximum passage when necessary in case of a fire to expel large quantities of smoke and combustion fumes.
- Ventilation systems which are equipped with adjustable flaps are well known.
- the European patent application EP-A-0103861 describes a system with fixed louvres, placed at about 45 degrees in reference to the airstream and is equipped with adjustable louvres which can rotate about 90 degrees.
- the passage of this type of constructions is restricted by the requirement to keep out precipitation to such an extent that the ventilation capacity is hardly sufficient in case of fire.
- the invention provides a system as defined in the single claim
- a universal ventilation system requires an air passage with a C v -value of 0 to 0.6.
- the required C v of the air passage should have a value of 0.5 to 0.9.
- the values of air passage can be measured following the standard method described in the norm DIN 18232, part 3 chapter 3.7.
- a ventilation opening (3) where a frame (4) is placed.
- a frame (4) On this frame (4) is a casing (5).
- louvres (6) are fastened. These louvres (6) are being composed from parts which fit together and are connected with fastening measurements.
- the lower part is an extruded profile (7).
- This profile (7) is partly in the form of a gutter (8) and a catcher of water drops (9), at (10) is a provision to connect extruded profile (7) to strip (11) made from sheet.
- a second extruded profile (12) is fastened with provisions (13).
- the extruded profile (12) contains a gutter (14) with dripping edge (15), a flat part (16) with provisions (17) to mount. From provision (13) goes a flat part (18) which is connected to a cylindrical (possibly hollow) part (19). Bearing parts (20) fit around the cylindrical part (19) which makes it possible to rotate flap (21) on the cylindrical part (19).
- the flap (21) is composed of an extruded profile (22) and strips (23) and (24) where (24) is meant as reinforcement.
- the extruded profile (22) contains providings for connections (25) for strip (23) and a curved part (26) that fits and rotates around bearing part (20). The curved part (26) grasps the bearing part (20) for more than 180 degrees. Rims (27) serve to hold a strip with a mohair seal.
- the bearing part (20) is cylindric and fits around the cylindrical part (19) and in the curved part (26) of profile (22). A part of the wall of the cylinder is taken away and leads through the flat part (18) of profile (12). Along the whole length of the hinge a number of bearing parts (20) are placed at even distances. If necessary distance parts (not drawn) can be mounted.
- the bearing parts (20) can possibly be made out of sinter bronze. Because of the fact that the hinge between louvre (6) and flap (21) is as long as the louvre itself, it is necessary to support the louvres at the end only.
- the ventilation system makes it possible to use elongated ventilator openings which ensures an efficient use of the opening.
- the louvres (6) and flaps (21) can be manufactured of single extruded profiles and make use of appropriate materials like aluminum or plastic.
- the strips of louvres (6) and flaps (21) can be made of transparant materials to have skylight entering the space.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Air-Flow Control Members (AREA)
- Special Wing (AREA)
Abstract
Description
- The invention concerns a ventilation system to ventilate spaces with natural draught. The ventilation system is used on roofs or in walls of industrial buildings. The ventilation system is equipped to ventilate spaces while precipitation is caught in extrusions with gutters and where the in-between distance of the louvres and flaps prohibit the weather entries to pass along the gutters and enter the ventilated spaces. The ventilation system provides the possibillity to open the flaps completely to obtain a maximum passage when necessary in case of a fire to expel large quantities of smoke and combustion fumes.
- Ventilation systems which are equipped with adjustable flaps are well known. The European patent application EP-A-0103861 describes a system with fixed louvres, placed at about 45 degrees in reference to the airstream and is equipped with adjustable louvres which can rotate about 90 degrees. The passage of this type of constructions is restricted by the requirement to keep out precipitation to such an extent that the ventilation capacity is hardly sufficient in case of fire.
- The invention provides a system as defined in the single claim
A universal ventilation system requires an air passage with a Cv-value of 0 to 0.6. In case of fire the required Cv of the air passage should have a value of 0.5 to 0.9. The values of air passage can be measured following the standard method described in the norm DIN 18232, part 3 chapter 3.7. - It is of great importance for safety provisions that moving parts will be moved regularly to be sure that the provisions function in case of emergency. In the system of the invention the same flaps that are used for normal ventilation are opened extra to provide the necessary air passage for the ventilation in case of fire. This means that the flaps stay movable because of the daily adjustments.
- The invention will be described with the help of the drawing.
- Fig. 1 shows the system in cross section.
- Fig. 2 shows a cross section of a louvre and flap.
- Fig. 3 shows a part of the bearing.
- In the roof (1) or wall of the ventilated space (2) is a ventilation opening (3) where a frame (4) is placed. On this frame (4) is a casing (5). In this casing (5) louvres (6) are fastened. These louvres (6) are being composed from parts which fit together and are connected with fastening measurements. The lower part is an extruded profile (7). This profile (7) is partly in the form of a gutter (8) and a catcher of water drops (9), at (10) is a provision to connect extruded profile (7) to strip (11) made from sheet. On the other side of strip (11) a second extruded profile (12) is fastened with provisions (13). The extruded profile (12) contains a gutter (14) with dripping edge (15), a flat part (16) with provisions (17) to mount. From provision (13) goes a flat part (18) which is connected to a cylindrical (possibly hollow) part (19). Bearing parts (20) fit around the cylindrical part (19) which makes it possible to rotate flap (21) on the cylindrical part (19).
The flap (21) is composed of an extruded profile (22) and strips (23) and (24) where (24) is meant as reinforcement. The extruded profile (22) contains providings for connections (25) for strip (23) and a curved part (26) that fits and rotates around bearing part (20). The curved part (26) grasps the bearing part (20) for more than 180 degrees. Rims (27) serve to hold a strip with a mohair seal.
Operating arms (28) with opening (29) which are connected to the flaps (21) are activated by rods (not drawn).
In Fig. 1 (30) the position of the flaps (21) is at normal ventilation. In this position precipitation caught by flap (30) will be led to gutter (14). Precipitation which passes flap (30) will be caught by gutter (8) and gutter (14) of the next louvre (6). The precipitation is lead out by holes (not drawn) near the end of the louvres (6).
At (31) is indicated the position of the flap with maximum passage in case of fire. - The bearing part (20) is cylindric and fits around the cylindrical part (19) and in the curved part (26) of profile (22). A part of the wall of the cylinder is taken away and leads through the flat part (18) of profile (12). Along the whole length of the hinge a number of bearing parts (20) are placed at even distances. If necessary distance parts (not drawn) can be mounted. The bearing parts (20) can possibly be made out of sinter bronze. Because of the fact that the hinge between louvre (6) and flap (21) is as long as the louvre itself, it is necessary to support the louvres at the end only. The ventilation system makes it possible to use elongated ventilator openings which ensures an efficient use of the opening.
In some cases the louvres (6) and flaps (21) can be manufactured of single extruded profiles and make use of appropriate materials like aluminum or plastic.
The strips of louvres (6) and flaps (21) can be made of transparant materials to have skylight entering the space.
Claims (1)
- A ventilation system using natural draught for ventilation of spaces comprising louvres (6) fixed in a casing (5) and pivoting flaps (21) placed on the outside thereof, which together govern the airflow through the ventilation opening (3), characterised in that- the fixed louvres (6) are composed out of two extruded profiles (7, 12) which are connected by a strip (11);- the inner profile (7) of the fixed louvre forms a gutter extending on the same side of the strip (11) as the flap (21) and a drop catcher (9) on the opposite side thereto;- the outer profile (12) of the fixed louvre forms a gutter (14) on the opposite side of the strip (11) to the flap (21) such that in the normal ventilation position precipitation will flow into the gutter from the flap;- the flaps (21) are composed out of an extruded profile (22) and strips (23, 24);- a fitting part (26) of the extruded profile (22) of the flap (21) hinges around a cylindrical part (19) of the outer one of the extruded profiles (12) of the fixed louvres (6);- the arrangement being such that at minor openings an adjustable ventilation with a ventilation coefficient (Cv), as measured according to DIN 18232 part 3, between 0 and 0.6 and which is precipitation-tight is obtained, whilst with fully opened flaps, such as in event of fire, the ventilation system features a ventilation coefficient (Cv) between 0.5 and 0.9.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8902977A NL8902977A (en) | 1989-12-01 | 1989-12-01 | VENTILATION SYSTEM. |
NL8902977 | 1989-12-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0436239A1 EP0436239A1 (en) | 1991-07-10 |
EP0436239B1 true EP0436239B1 (en) | 1995-03-29 |
Family
ID=19855735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90203062A Expired - Lifetime EP0436239B1 (en) | 1989-12-01 | 1990-11-19 | Ventilation system |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0436239B1 (en) |
AT (1) | ATE120533T1 (en) |
DE (1) | DE69018229T2 (en) |
NL (1) | NL8902977A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2002322240A1 (en) * | 2002-08-01 | 2004-02-23 | Solutions Jupiter Inc. | Louvers slats with flexible gutters |
CN107965898A (en) * | 2017-11-23 | 2018-04-27 | 苏州庆瑞空气系统有限公司 | A kind of left and right exhausting plate for air conditioner |
DE102018114939A1 (en) * | 2018-06-21 | 2019-12-24 | Illinois Tool Works Inc. | Blade for an air vent of a vehicle and method for producing the blade |
CN117311276B (en) * | 2023-09-19 | 2024-08-23 | 深圳海容高新材料科技有限公司 | Safety monitoring system of new nano material production workshop |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2456311A (en) * | 1944-02-07 | 1948-12-14 | Bertie K Paget | Ventilator |
US2456312A (en) * | 1945-05-24 | 1948-12-14 | Bertie K Paget | Ventilator |
GB2062845A (en) * | 1979-10-12 | 1981-05-28 | Colt Int Ltd | Roof ventilators |
DE3234518A1 (en) * | 1982-09-17 | 1984-03-22 | Robertson-GAL Gesellschaft für angewandte Lufttechnik mbH, 4052 Korschenbroich | ROOF FAN |
-
1989
- 1989-12-01 NL NL8902977A patent/NL8902977A/en not_active Application Discontinuation
-
1990
- 1990-11-19 DE DE69018229T patent/DE69018229T2/en not_active Expired - Fee Related
- 1990-11-19 EP EP90203062A patent/EP0436239B1/en not_active Expired - Lifetime
- 1990-11-19 AT AT90203062T patent/ATE120533T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0436239A1 (en) | 1991-07-10 |
NL8902977A (en) | 1991-07-01 |
DE69018229D1 (en) | 1995-05-04 |
ATE120533T1 (en) | 1995-04-15 |
DE69018229T2 (en) | 1995-11-23 |
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