EP0103861B1 - Roof ventilator - Google Patents

Roof ventilator Download PDF

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Publication number
EP0103861B1
EP0103861B1 EP83109156A EP83109156A EP0103861B1 EP 0103861 B1 EP0103861 B1 EP 0103861B1 EP 83109156 A EP83109156 A EP 83109156A EP 83109156 A EP83109156 A EP 83109156A EP 0103861 B1 EP0103861 B1 EP 0103861B1
Authority
EP
European Patent Office
Prior art keywords
ventilation
dampers
guide surfaces
roof ventilator
overlapping
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
Application number
EP83109156A
Other languages
German (de)
French (fr)
Other versions
EP0103861A3 (en
EP0103861A2 (en
Inventor
Wilhelm Fritz Morschheuser
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.)
Rogal Gesellschaft fur Angewandte Lufttechnik Mbh
Original Assignee
ROBERTSON GAL GESELLSCHAFT fur ANGEWANDTE LUFTTECHNIK MBH
Robertson Gal Gesellschaft fur Angewandte Lufttechnik Mbh
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 ROBERTSON GAL GESELLSCHAFT fur ANGEWANDTE LUFTTECHNIK MBH, Robertson Gal Gesellschaft fur Angewandte Lufttechnik Mbh filed Critical ROBERTSON GAL GESELLSCHAFT fur ANGEWANDTE LUFTTECHNIK MBH
Publication of EP0103861A2 publication Critical patent/EP0103861A2/en
Publication of EP0103861A3 publication Critical patent/EP0103861A3/en
Application granted granted Critical
Publication of EP0103861B1 publication Critical patent/EP0103861B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • F24F13/24—Means for preventing or suppressing noise
    • 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
    • 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

Definitions

  • the invention relates to a roof fan, in which the ventilation flaps release a shaft opening in their open position and this in their closed position, in which their front and rear edge areas close overlapping one another, with the ventilation flaps being associated with guiding surfaces inclined to the main direction of the ventilation flow, behind which , Seen in the main direction of the ventilation flow, the ventilation flaps can be pivoted from their opening position approximately parallel to the main direction in their closed position about axes running in the front area of the ventilation flaps into their closed position.
  • Such a roof fan is known from DE-A 27 08 774.
  • the ventilation flaps can be pivoted about axes running behind the edge regions of the guide surfaces, as seen in the direction of the ventilation flow, so that the latter lie both in the area of action of the ventilation flow and at least in the open state in the precipitation area. Since the edge regions mentioned are angled to form a channel profile, they cause an increased flow resistance for the ventilation flow. In the long term, the wetness of precipitation also causes corrosion.
  • the invention has for its object to design the roof fan so that the ventilation flow meets as little resistance as possible in the area of the guide surfaces and ventilation flaps, and that an increased protection from precipitation is created.
  • the structural design of the roof fan is to be improved.
  • the overlapping edge zones each form supports for the adjacent ventilation flaps in their closed position.
  • the edge zones mentioned are designed as curved lugs, a risk of damage when closing the ventilation flaps is also avoided in the long term.
  • the roof fan designed according to the invention also leads to increased sound insulation because of the backdrop-like effect of the guide surfaces and the ventilation flaps.
  • Figure 1 shows a shaft opening 12 within a flat roof, which is bordered by an entry frame 13 and is further provided with shaft walls 14.
  • the space 11 to be vented is connected to the surroundings via the shaft opening 12.
  • the shaft opening 12 defines an opening plane 15, to which the main direction 2 of the ventilation flow is perpendicular.
  • the ventilation flaps 1 can be pivoted about axes 9 in the upper, rear edge region of the guide surfaces 4. In the normal position, there is an angle of approximately 90 ° between the ventilation flaps 1 and the guide surfaces 4, the guide surfaces 4 forming an angle of 45 ° with the main direction 2 of the ventilation flow.
  • the front, lower edge 5 of the guide surfaces are provided with rain gutters 7. These have a curved cross section, so that the flow resistance is reduced.
  • the upper, rear edge edges 6 of the guide surfaces 4 are designed with edge zones 10 curved in the direction of the associated ventilation flaps i. These edge zones 10 cover on the one hand the axes 9 and also the joints of the ventilation flaps 1, so that these parts are largely protected from precipitation. On the other hand, these edge zones form 10 supports for the ventilation flaps in the closed position. In the middle part of FIG. 1, one of the ventilation flaps 1 is shown in the closed position.
  • the upper, rear marginal edges of the ventilation flaps 1 are expediently also angled somewhat, so that an extensive closure is achieved when resting on the curved marginal zones 10 of the guide surfaces 4.
  • the guide surfaces 4 and the ventilation flaps 3 are made in one piece.
  • this embodiment shown enlarged, recognizes one that the aforementioned parts are double-skinned and that they are perforated on their side facing the room 11 to be vented. This achieves very good sound absorption, which, in conjunction with sound reflection, guarantees particularly high sound insulation.
  • the rain gutters 7 are arranged in such a way that their projection in the main direction 2 of the ventilation flow strikes further rain gutters 8 of the adjacent guide surfaces arranged above.
  • the closed position there is a largely closed outer surface, in which the upper ventilation flaps 3 engage in the rain gutters 8 with angled end sections.
  • sound-absorbing backdrops can additionally be introduced into the path of the venting flow, which expediently run parallel to the main direction of the venting flow mentioned. Thanks to this sound-absorbing backdrop provided below the guide surfaces 4, a sound insulation effect of up to a total of 17 dB can be achieved together with the guide surfaces.

Description

Die Erfindung bezieht sich auf einen Dachlüfter, bei welchem die Lüftungsklappen eine Schachtöffnung in ihrer Öffnungsstellung freigeben und diese in ihrer Schließstellung, in welcher ihre vorderen und hinteren Randbereiche einander überlappend verschließen, wobei den Lüftungsklappen zur Hauptrichtung der Entlüftungsströmung geneigt verlaufende Leitflächen zugeordnet sind, hinter welchen, in der Hauptrichtung der Entlüftungsströmung gesehen, die Lüftungsklappen aus der zur Hauptrichtung etwa parallelen Öffnungslage in ihrer Schließstellung um im vorderen Bereich der Lüftungsklappen verlaufende Achsen bis in ihre, Schließstellung verschwenkbar sind.The invention relates to a roof fan, in which the ventilation flaps release a shaft opening in their open position and this in their closed position, in which their front and rear edge areas close overlapping one another, with the ventilation flaps being associated with guiding surfaces inclined to the main direction of the ventilation flow, behind which , Seen in the main direction of the ventilation flow, the ventilation flaps can be pivoted from their opening position approximately parallel to the main direction in their closed position about axes running in the front area of the ventilation flaps into their closed position.

Ein derartiger Dachlüfter ist nach der DE-A 27 08 774 bekannt. Die Lüftungsklappen sind dabei um in Richtung der Entlüftungsströmung gesehen hinter den Randbereichen der Leitflächen verlaufende Achsen verschwenkbar, so daß letztere sowohl im Einwirkungsbereich der Entlüftungsströmung als auch zumindest im Öffnungszustand im Niederschlagsbereich liegen. Da die genannten Randbereiche zu einem Rinnenprofil abgewinkelt sind, verursachen sie einen erhöhten Strömungswiderstand für die Entlüftungsströmung. Langfristig bewirkt die Niederschlagsnässe zudem Korrosionen.Such a roof fan is known from DE-A 27 08 774. The ventilation flaps can be pivoted about axes running behind the edge regions of the guide surfaces, as seen in the direction of the ventilation flow, so that the latter lie both in the area of action of the ventilation flow and at least in the open state in the precipitation area. Since the edge regions mentioned are angled to form a channel profile, they cause an increased flow resistance for the ventilation flow. In the long term, the wetness of precipitation also causes corrosion.

Von diesem Stand der Technik ausgehend liegt der Erfindung die Aufgabe zugrunde, den Dachlüfter so zu gestalten, daß die Entlüftungsströmung auf einen möglichst geringen Widerstand im Bereich der Leitflächen und Lüftungsklappen stößt, und daß ein gesteigerter Schutz von Niederschlägen geschaffen wird. Darüberhinaus soll die konstruktive Gestaltung des Dachlüfters verbessert werden.Starting from this prior art, the invention has for its object to design the roof fan so that the ventilation flow meets as little resistance as possible in the area of the guide surfaces and ventilation flaps, and that an increased protection from precipitation is created. In addition, the structural design of the roof fan is to be improved.

Die Erfindung löst diese Aufgabenstellung durch die in den Patentansprüchen gemachten Vorschlag. Vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Anspruchen dargelegt.The invention solves this problem by the proposal made in the claims. Advantageous embodiments of the invention are set out in the dependent claims.

Dank der vorgeschlagenen Überdeckung der Schwenkachsen durch die in Entlüftungsströmung hinteren Randbereiche der Leitflächen werden die normalerweise sperrig gestalteten Gelenke nicht mehr von der Strömung beaufschlagt, so daß die sonst an dieser Stelle bedingten Druckverluste vermieden werden. Die Abdeckung der Schwenkachsen führt weiter dazu, daß letztere von Niederschlägen geschützt werden. Dies hat deshalb erhöhte Bedeutung, weil die Schwenkachsen der Gelenke häufig bewegt werden müssen. Korrosionserscheinungen würden sich besonders störend auswirken, indem ein Festklemmen die Anordnung unbrauchbar machen würde.Thanks to the proposed overlap of the swivel axes by the rear edge regions of the guide surfaces in the venting flow, the joints, which are normally bulky, are no longer acted upon by the flow, so that the pressure losses otherwise caused at this point are avoided. Covering the pivot axes also means that the latter are protected from precipitation. This is of increased importance because the pivot axes of the joints have to be moved frequently. Signs of corrosion would have a particularly disruptive effect, since jamming would render the arrangement unusable.

In konstruktiv besonders zweckmäßiger Weise bilden die überdeckenden Randzonen jeweils Auflager für die benachbarten Lüftungsklappen in ihrer Schließstellung. Vor allem dann, wenn die genannten Randzonen als gekrümmte Ansätze ausgeführt sind, wird eine Gefahr einer Beschädigung beim Schließen der Lüftungsklappen auch langfristig vermieden.In a structurally particularly expedient manner, the overlapping edge zones each form supports for the adjacent ventilation flaps in their closed position. Especially when the edge zones mentioned are designed as curved lugs, a risk of damage when closing the ventilation flaps is also avoided in the long term.

Der erfindungsgemäß gestaltete Dachlüfter führt wegen der kulissenartigen Wirkung der Leitflächen und der Lüftungsklappen zugleich zu einem erhöhten Schallschutz.The roof fan designed according to the invention also leads to increased sound insulation because of the backdrop-like effect of the guide surfaces and the ventilation flaps.

Zur weiteren Veranschaulichung der Erfindung wird auf die sich auf Ausführungsbeispiele beziehenden Zeichnungen Bezug genommen. Darin zeigen:

  • Figur 1 eine schematische Querschnittsdarstellung des neuen Dachlüfters, während
  • Figur 2 eine abgewandelte Ausführungsform im Querschnitt ausschnittsweise zeigt.
To further illustrate the invention, reference is made to the drawings relating to exemplary embodiments. In it show:
  • Figure 1 is a schematic cross-sectional view of the new roof fan, while
  • Figure 2 shows a modified embodiment in cross section.

Figur 1 zeigt eine Schachtöffnung 12 innerhalb eines Flachdaches, die mittels eines Eintrittsrahmens 13 eingefaßt und weiterhin mit Schachtwänden 14 versehen ist. Ober die Schachtöffnung 12 steht der zu entlüftende Raum 11 mit der Umgebung in Verbindung. Die Schachtöffnung 12 definiert eine Öffnungsebene 15, zu welcher die Hauptrichtung 2 der Entlüftungsströmung senkrecht verläuft.Figure 1 shows a shaft opening 12 within a flat roof, which is bordered by an entry frame 13 and is further provided with shaft walls 14. The space 11 to be vented is connected to the surroundings via the shaft opening 12. The shaft opening 12 defines an opening plane 15, to which the main direction 2 of the ventilation flow is perpendicular.

Innerhalb der Schachtöffnung 12 erkennt man die in Schrägrichtung eingebauten Leitflächen 4 sowie die Lüftungsklappen 1, welchletztere in Figur 1 gestrichelt in ihrer vollen Öffnungsstellung sowie in einem Fall auch in der vollen Schließstellung dargestellt sind. Zu diesem Zweck sind die Lüftungsklappen 1 um Achsen 9 im oberen, hinteren Randbereich der Leitflächen 4 verschwenkbar. In der Normalstellung besteht zwischen den Lüftungsklappen 1 und den Leitflächen 4 ein Winkel von etwa 90-, wobei die Leitflächen 4 mit der Hauptrichtung 2 der Entlüftungsströmung einen Winkel von 45° bilden.Inside the shaft opening 12 one can see the guide surfaces 4 installed in the oblique direction and the ventilation flaps 1, the latter being shown in broken lines in FIG. 1 in their full open position and in one case also in the full closed position. For this purpose, the ventilation flaps 1 can be pivoted about axes 9 in the upper, rear edge region of the guide surfaces 4. In the normal position, there is an angle of approximately 90 ° between the ventilation flaps 1 and the guide surfaces 4, the guide surfaces 4 forming an angle of 45 ° with the main direction 2 of the ventilation flow.

Am Eintritt der Entlüftungsströmung sind die vorderen, unteren Randkanten 5 der Leitflächen mit Regenablaufrinnen 7 versehen. Diese besitzen einen gekrümmten Querschnitt, so daß sich der Strömungswiderstand verringert. Die oberen, hinteren Randkanten 6 der Leitflächen 4 sind mit in Richtung auf die zugehörigen Lüftungsklappen i gekrümmten Randzonen 10 ausgeführt. Diese Randzonen 10 überdecken einerseits die Achsen 9 sowie gleichfalls die Gelenke der Lüftungsklappen 1, so daß diese Teile weitgehend vor Niederschlägen geschützt sind. Andererseits bilden diese Randzonen 10 Auflager für die in Schließstellung befindlichen Lüftungsklappen. Im mittleren Teil der Figur 1 ist eine der Lüftungsklappen 1 in Schließstellung gezeigt. Zweckmäßig sind die oberen, hinteren Randkanten der Lüftungsklappen 1 auch noch etwas abgewinkelt, so daß sich ein weitgehender Abschluß bei Auflage auf die gekrümmten Randzonen 10 der Leitflächen 4 einstellt.At the entry of the ventilation flow, the front, lower edge 5 of the guide surfaces are provided with rain gutters 7. These have a curved cross section, so that the flow resistance is reduced. The upper, rear edge edges 6 of the guide surfaces 4 are designed with edge zones 10 curved in the direction of the associated ventilation flaps i. These edge zones 10 cover on the one hand the axes 9 and also the joints of the ventilation flaps 1, so that these parts are largely protected from precipitation. On the other hand, these edge zones form 10 supports for the ventilation flaps in the closed position. In the middle part of FIG. 1, one of the ventilation flaps 1 is shown in the closed position. The upper, rear marginal edges of the ventilation flaps 1 are expediently also angled somewhat, so that an extensive closure is achieved when resting on the curved marginal zones 10 of the guide surfaces 4.

Bei der Ausführungsform nach Figur 2 sind die Leitflächen 4 und die Lüftungsklappen 3 einteilig ausgebildet. Bei dieser, vergrößert wiedergegebenen Ausführungsform erkennt man, daß die vorerwähnten Teile doppelschalig sind und daß sie auf ihrer dem zu entlüftenden Raum 11 zugekehrten Seite gelocht sind. Dadurch wird eine sehr gute Schallabsorption erreicht, die in Verbindung mit der Schallreflexion einen besonders hohen Schallschutz gewährt.In the embodiment according to FIG. 2, the guide surfaces 4 and the ventilation flaps 3 are made in one piece. In this embodiment, shown enlarged, recognizes one that the aforementioned parts are double-skinned and that they are perforated on their side facing the room 11 to be vented. This achieves very good sound absorption, which, in conjunction with sound reflection, guarantees particularly high sound insulation.

Die Regenablaufrinnen 7 sind hierbei so angeordnet, daß ihre Projektion in der Hauptrichtung 2 der Entlüftungsströmung auf oberhalb angeordnete, weitere Regenablaufrinnen 8 der jeweils benachbarten Leitflächen trifft. In der Schließstellung ergibt sich eine weitgehend geschlossene Außenfläche, in welcher die oberen Lüftungsklappen 3 mit abgewinkelten Endabschnitten in die Regenablaufrinnen 8 eingreifen. Wie Figur 2 weiterhin zeigt, lassen sich ergänzend schallschluckende Kulissen in den Weg der Entlüftungsströmung einbringen, die zweckmäßig parallel zur Hauptrichtung der genannten Entlüftungsströmung verlaufen. Dank dieser, unterhalb der Leitflächen 4 vorgesehenen schallschluckenden Kulissen läßt sich zusammen mit den Leitflächen eine Schalldämmwirkung bis zu insgesamt 17dB erzielen.The rain gutters 7 are arranged in such a way that their projection in the main direction 2 of the ventilation flow strikes further rain gutters 8 of the adjacent guide surfaces arranged above. In the closed position, there is a largely closed outer surface, in which the upper ventilation flaps 3 engage in the rain gutters 8 with angled end sections. As FIG. 2 also shows, sound-absorbing backdrops can additionally be introduced into the path of the venting flow, which expediently run parallel to the main direction of the venting flow mentioned. Thanks to this sound-absorbing backdrop provided below the guide surfaces 4, a sound insulation effect of up to a total of 17 dB can be achieved together with the guide surfaces.

Claims (3)

1. Roof ventilator in which baffles (1, 3) in their opening position clear a port (12), and closing this port (12) in their closing position with their frontal and their rear flange portions overlapping one each another, and in which dampers (4) corresponding to each baffle (1, 3) are inclined to the main direction (2) of the ventilation flow with the baffle (1, 3) being pivotable behind the dampers (4) each about an axis (9) arranged in their frontal portions from said opening position parallel to said main direction into said closing position,
characterized by
the rear flange portions of the dampers (4) overlapping said axes (9) with edge zones (10) directed to the corresponding baffles (1).
2. Roof ventilator according to claim 1,
characterized by
the overlapping edge zones (10) being at attached as curved extensions to the dampers (4).
3. Roof ventilator according one of the claimes 1 or 2,
characterized by
the overlapping edge zones (10) supporting the adjacent baffles (1) in the closing position thereof.
EP83109156A 1982-09-17 1983-09-16 Roof ventilator Expired EP0103861B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823234518 DE3234518A1 (en) 1982-09-17 1982-09-17 ROOF FAN
DE3234518 1982-09-17

Publications (3)

Publication Number Publication Date
EP0103861A2 EP0103861A2 (en) 1984-03-28
EP0103861A3 EP0103861A3 (en) 1984-11-14
EP0103861B1 true EP0103861B1 (en) 1987-05-20

Family

ID=6173491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83109156A Expired EP0103861B1 (en) 1982-09-17 1983-09-16 Roof ventilator

Country Status (2)

Country Link
EP (1) EP0103861B1 (en)
DE (2) DE3234518A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8902977A (en) * 1989-12-01 1991-07-01 Rmtd Int Bv VENTILATION SYSTEM.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456312A (en) * 1945-05-24 1948-12-14 Bertie K Paget Ventilator
DE2708774A1 (en) * 1977-03-01 1978-09-07 Colt Int Gmbh Natural draught ventilator for horizontal factory roof - has vertical V-shaped louvres with rain gutters on each limb
DE7835499U1 (en) * 1978-11-30 1979-03-15 Voith Getriebe Kg, 7920 Heidenheim INDEPENDENT ROOF BLIND
DE8010220U1 (en) * 1980-04-15 1981-05-27 Heinrich Nickel Gmbh, 5240 Betzdorf FLAT GRID FOR AIR PERFORMANCE OPENINGS OF AIR TECHNICAL SYSTEMS AND THE LIKE

Also Published As

Publication number Publication date
DE3371688D1 (en) 1987-06-25
DE3234518A1 (en) 1984-03-22
EP0103861A3 (en) 1984-11-14
EP0103861A2 (en) 1984-03-28

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