EP0103861A2 - Roof ventilator - Google Patents

Roof ventilator Download PDF

Info

Publication number
EP0103861A2
EP0103861A2 EP83109156A EP83109156A EP0103861A2 EP 0103861 A2 EP0103861 A2 EP 0103861A2 EP 83109156 A EP83109156 A EP 83109156A EP 83109156 A EP83109156 A EP 83109156A EP 0103861 A2 EP0103861 A2 EP 0103861A2
Authority
EP
European Patent Office
Prior art keywords
guide surfaces
ventilation
fan according
ventilation flaps
roof fan
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
EP83109156A
Other languages
German (de)
French (fr)
Other versions
EP0103861B1 (en
EP0103861A3 (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 FUER ANGEWANDTE LUFTTECHNIK MBH
Original Assignee
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 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

Links

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
    • 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 ventilation flaps release into a shaft opening in their open position and close them in their closed position in which their front and rear edge regions overlap one another.
  • a roof ventilator of this type is known in its simplest embodiment according to US Pat. No. 12 22 394, ventilation flaps being pivotable into a closed position above two shaft walls, in which the upper edge of the one ventilation flap carries a roof-like angled extension, with which it is in its closed position the adjacent edge of the other ventilation flap overlaps.
  • the two ventilation flaps can be pivoted in opposite directions to one another in such a way that the overlap occurs in the area of their upper edges. With the opening position, the entire shaft opening is released, so that it is unprotected from precipitation.
  • US Pat. No. 2,963,956 provides a deviating path which, above all, allows larger manhole openings to be opened, in that no precipitation can penetrate into the manhole opening within a limited position range of the ventilation flaps.
  • the object of the invention is to remove the state of the art to continue to develop that in the open as well as in the closed state of the ventilation flaps penetration of precipitation in the shaft opening is avoided.
  • the venting flow should encounter as little resistance as possible, so that the opening cross section of the shaft can be used to a very large extent.
  • a roof ventilator is thus obtained which, even in the case of very large dimensions of the shaft opening, makes it possible to cover the shaft opening in any position of the ventilation flaps, which completely or largely eliminates the penetration of precipitation.
  • the baffles run parallel to each other and allow flow guidance, in which turbulent cross-sectional constrictions are largely avoided.
  • the basic consideration for this is that if a larger flow cross section is divided into several individual cross sections, the tendency of the flow to become turbulent is significantly reduced. Thanks to the inclination of the guide surfaces, effective sound insulation is achieved in addition to the advantages mentioned. This is due to the fact that the sound waves that occur are not reflected in the environment, but experience such a refraction from the guide surfaces that they can only leave the shaft area after multiple reflection paths. This leads to absorption, which can be favored when designing the guide surfaces in double-shell design by perforating the shells facing the room to be vented.
  • the guide surfaces are expediently arranged at an angle of approximately 45 ° to the main direction of the ventilation flow, in turn, they are designed in terms of distance and size so that their projections in the main direction of the ventilation flow appropriately overlap.
  • the above-mentioned covering serves particularly advantageously connected rain gutters, via which the rainwater reaching the guide surfaces can also be drained off.
  • the two elements advantageously form an approximately right angle with one another.
  • both elements are of approximately the same width; furthermore, a considerable part of the intended effects can already be achieved if the ventilation flaps cannot be moved out of the position mentioned.
  • the ventilation flaps can be designed with a double shell according to a further proposal of the invention, there is a considerable increase in the mechanical strength and the sound absorption effect, in particular also for larger shaft cross sections.
  • the ventilation flaps can also be designed to be pivotable together with the guide surfaces, so that the ventilation flaps overlap in their closed position in the manner referred to in the preamble of patent claim 1.
  • the guide surfaces run approximately parallel to the main direction of the ventilation flow or, since ventilation does not take place, approximately perpendicular to the plane of the shaft opening.
  • the guide surfaces are rigidly arranged.
  • the ventilation flaps can be pivoted behind the guide surfaces in the main direction of the ventilation flow, the pivoting area extending from a position parallel to the main direction of the ventilation flow into the closed position.
  • the ventilation flaps In the open position, the ventilation flaps are essentially perpendicular to the shaft opening level while they are lie parallel to the latter in the closed position.
  • the pivot axes therefore expediently extend in the rear edge region of the guide surfaces, while the joints of the ventilation flaps run on their front edge region.
  • the position designation "front” and “rear” is always given in such a way that it denotes the flow running from front to back.
  • the rear edge areas of the guide surfaces cover the swivel axes with edge zones pointing in the direction of the respective ventilation flaps.
  • the edge zones mentioned are expediently attached to the guide surfaces as curved approaches, so that greater flow resistances can be avoided.
  • the edge zones mentioned form advantageous supports for the respectively adjacent ventilation flaps in their closed position.
  • the front edge areas of the guide surfaces in the direction of flow are also curved in the cross-sectional illustration in the direction of the ventilation flaps, so that they are not only of advantage in terms of flow, but also form very effective rain gutters which can serve to overlap with the rear edge of the adjacent guide surfaces.
  • Figure 1 shows a shaft opening 12 within a flat roof, which is enclosed by an entry frame 13 and also with Shaft walls 14 is provided.
  • 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 exists between the ventilation flap 1 and the guide vanes 4, an angle of about 90 0, where the guide surfaces 4 with the main direction of the ventilation flow 2 form an angle of 45 °.
  • 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 1. 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.
  • the above-mentioned parts are double-shelled and that they are perforated on their side facing the space 11 to be vented. This will make a very good sound absorption achieved 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.

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)
  • Air-Flow Control Members (AREA)

Abstract

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).

Description

Die Erfindung bezieht sich auf einen Dachlüfter, bei welchem Lüftungsklappen in eine Schachtöffnung in ihrer öffnungsstellung freigeben und diese in ihrer Schließstellung, in welcher ihre vorderen und hinteren Randbereiche einander überlappen, verschließen.The invention relates to a roof fan in which ventilation flaps release into a shaft opening in their open position and close them in their closed position in which their front and rear edge regions overlap one another.

Ein Dachlüfter dieser Art ist in seiner einfachsten Ausführungsform nach der US-PS 12 22 394 bekannt, wobei Lüftungsklappen oberhalb zweier Schachtwände in eine Schließstellung verschwenkbar sind, in welcher der obere Rand der einen Lüftungsklappe einen dachartig abgewinkelten Ansatz trägt, mit welchem er in seiner Schließstellung die angrenzende Randkante der anderen Lüftungsklappe überlappt. Die beiden Lüftungsklappen sind dabei gegensinnig zueinander derart verschwenkbar, daß sich die Überlappung im Bereich ihrer oberen Ränder ergibt. Mit der öffnungsstellung wird die gesamte Schachtöffnung freigegeben, so daß sie ungeschützt vor Niederschlägen ist.A roof ventilator of this type is known in its simplest embodiment according to US Pat. No. 12 22 394, ventilation flaps being pivotable into a closed position above two shaft walls, in which the upper edge of the one ventilation flap carries a roof-like angled extension, with which it is in its closed position the adjacent edge of the other ventilation flap overlaps. The two ventilation flaps can be pivoted in opposite directions to one another in such a way that the overlap occurs in the area of their upper edges. With the opening position, the entire shaft opening is released, so that it is unprotected from precipitation.

Bei weiterentwickelten, ständig überdachten Schachtöffnungen behindern durch Druckverluste infolge Strömungsumlenkung die Entlüftung erheblich.In the case of further developed, constantly covered shaft openings, pressure loss due to flow deflection considerably hinders ventilation.

Einen abweichenden Weg, der vor allem auch bei größeren Schachtöffnungen diese freizugeben gestattet, sieht die US-PS29 63 956 vor, indem innerhalb eines begrenzten Stellungsbereiches der Entlüftungsklappen keine Niederschläge in die Schachtöffnung eindringen können.US Pat. No. 2,963,956 provides a deviating path which, above all, allows larger manhole openings to be opened, in that no precipitation can penetrate into the manhole opening within a limited position range of the ventilation flaps.

Der Erfindung liegt die Aufgabe zugrunde, den Stand der Technik dahingehend weiterzuentwickeln, daß sowohl im geöffneten sowie auch im geschlossenen Zustand der Lüftungsklappen ein Eindringen von Niederschlägen in die Schachtöffnung vermieden wird. Dabei soll die Entlüftungsströmung auf einen möglichst geringen Widerstand stoßen, so daß der öffnungsquerschnitt des Schachtes zu einem sehr hohen Anteil genutzt werden kann.The object of the invention is to remove the state of the art to continue to develop that in the open as well as in the closed state of the ventilation flaps penetration of precipitation in the shaft opening is avoided. The venting flow should encounter as little resistance as possible, so that the opening cross section of the shaft can be used to a very large extent.

Außerdem soll eine schalldämmende Wirkung erzielt werden.In addition, a sound-absorbing effect should be achieved.

Die erwähnte Aufgabenstellung wird durch die Erfindung gelöst, wie sie in den Patentansprüchen gekennzeichnet ist.The stated problem is solved by the invention as characterized in the claims.

Man kommt somit zu einem Dachlüfter, der selbst bei sehr großen Ausmaßen der Schachtöffnung in jeder Stellung der Lüftungsklappen eine Überdeckung der Schachtöffnung ermöglicht , die das Eindringen von Niederschlägen ganz oder weitgehend ausschaltet.A roof ventilator is thus obtained which, even in the case of very large dimensions of the shaft opening, makes it possible to cover the shaft opening in any position of the ventilation flaps, which completely or largely eliminates the penetration of precipitation.

Die Leitflächen verlaufen parallel zueinander und ermöglichen eine Strömungsführung, bei der turbulente Querschnittsverengungen weitgehend vermieden werden. Hierfür ist die Grundüberlegung maßgeblich, daß bei Aufteilung eines größeren Strömungsquerschnittes in mehrere Einzelquerschnitte die Tendenz der Strömung, turbulent zu werden, wesentlich herabgesetzt ist. Dank der Neigung der Leitflächen wird über die erwähnten Vorteile hinausgehend auch noch eine wirkungsvolle Schalldämmung erreicht. Dies liegt daran, daß die auftretenden Schallwellen nicht in die Umgebung reflektiert werden, sondern von den Leitflächen eine derartige Brechnung erfahren, daß sie erst nach mehrfachen Reflexionswegen den Schachtbereich verlassen können. Dabei kommt es zu Absorptionen , die bei Ausführung der Leitflächen in doppelschaliger Ausführung noch dadurch begünstigt werden können, daß die dem zu entlüftenden Raum zugekehrten Schalen gelocht sind.The baffles run parallel to each other and allow flow guidance, in which turbulent cross-sectional constrictions are largely avoided. The basic consideration for this is that if a larger flow cross section is divided into several individual cross sections, the tendency of the flow to become turbulent is significantly reduced. Thanks to the inclination of the guide surfaces, effective sound insulation is achieved in addition to the advantages mentioned. This is due to the fact that the sound waves that occur are not reflected in the environment, but experience such a refraction from the guide surfaces that they can only leave the shaft area after multiple reflection paths. This leads to absorption, which can be favored when designing the guide surfaces in double-shell design by perforating the shells facing the room to be vented.

Um sowohl strömungstechnisch als auch schalltechnisch besonders wirksam zu sein, sind die Leitflächen zweckmäßig unter einem etwa 45° geneigten Winkel zur Hauptrichtung der Entlüftungsströmung angeordnet, wobei sie wiederum abstands- und größenmäßig so ausgelegt sind, daß sich ihre Projektionen in der Hauptrichtung der Entlüftungsströmung zweckmäßig überdecken.In order to be particularly effective both in terms of flow technology and sound technology, the guide surfaces are expediently arranged at an angle of approximately 45 ° to the main direction of the ventilation flow, in turn, they are designed in terms of distance and size so that their projections in the main direction of the ventilation flow appropriately overlap.

Der erwähnten 0berdeckung dienen besonders vorteilhaft angeschlossene Regenablaufrinnen, über die zugleich das auf die Leitflächen gelangende Niederschlagswasser abgeleitet werden kann.The above-mentioned covering serves particularly advantageously connected rain gutters, via which the rainwater reaching the guide surfaces can also be drained off.

Bei einteiliger Ausbildung der Leitflächen mit den Lüftungsklappen bilden beide Elemente vorteilhaft miteinander einen etwa rechten Winkel. Beide Elemente sind in diesem Falle von etwa gleicher Breite; weiterhin kann man bereits einen erheblichen Teil der beabsichtigten Wirkungen erzielen, wenn auf eine Beweglichkeit der Lüftungsklappen aus der erwähnten Stellung heraus verzichtet wird. Da nicht nur die Leitflächen, sondern auch die Lüftungsklappen nach einem weiteren Vorschlag der Erfindung doppelschalig ausgebildet werden können, kommt man zu einer beachtlichen Steigerung der mechanischen Festigkeit und derSchallabsorptionswirkung, und zwar insbesondere auch für größere Schachtquerschnitte.When the guide surfaces are formed in one piece with the ventilation flaps, the two elements advantageously form an approximately right angle with one another. In this case, both elements are of approximately the same width; furthermore, a considerable part of the intended effects can already be achieved if the ventilation flaps cannot be moved out of the position mentioned. Since not only the guide surfaces, but also the ventilation flaps can be designed with a double shell according to a further proposal of the invention, there is a considerable increase in the mechanical strength and the sound absorption effect, in particular also for larger shaft cross sections.

Man kann bei- der vorerwähnten Ausführungsform indes auch die Lüftungsklappen zusammen mit den Leitflächen verschwenkbar ausgestalten, so daß sich die Lüftungsklappen in der gemäß Oberbegriff des Patentanspruchs 1 bezeichneten Art in ihrer Schließstellung überlappen. In dieser Stellung verlaufen die Leitflächen etwa parallel zur Hauptrichtung der Entlüftungsströmung bzw., da eine Entlüftung dann ja nicht stattfindet, etwa senkrecht zur Ebene der Schachtöffnung.In the aforementioned embodiment, however, the ventilation flaps can also be designed to be pivotable together with the guide surfaces, so that the ventilation flaps overlap in their closed position in the manner referred to in the preamble of patent claim 1. In this position, the guide surfaces run approximately parallel to the main direction of the ventilation flow or, since ventilation does not take place, approximately perpendicular to the plane of the shaft opening.

Bei der Verwendung von verschwenkbaren Lüftungsklappen sind die Leitflächen hingegen starr angeordnet. Die Lüftungsklappen sind dabei in der Hauptrichtung der Entlüftungsströmung hinter den Leitflächen verschwenkbar, wobei der Verschwenkbereich aus einer zur Hauptrichtung der Entlüftungsströmung parallelen Lage bis in die Schließstellung verläuft. der öffnungsstellung stehen die Lüftungsklappen also im wesentlichen senkrecht auf der Schachtöffnungsebene, während sie in der Schließstellung parallel zu letzterer liegen. Zweckmäßig erstrecken sich die Schwenkachsen daher im hinteren Randbereich der Leitflächen , während die Gelenke der Lüftungsklappen an deren vorderem Randbereich verlaufen. Hier wie auch in der übrigen Beschreibung ist die Lagebezeichnung "vorne" und "hinten" stets derart angegeben, daß sie die von vorne nach hinten verlaufende Strömung bezeichnet.When using swiveling ventilation flaps, however, the guide surfaces are rigidly arranged. The ventilation flaps can be pivoted behind the guide surfaces in the main direction of the ventilation flow, the pivoting area extending from a position parallel to the main direction of the ventilation flow into the closed position. In the open position, the ventilation flaps are essentially perpendicular to the shaft opening level while they are lie parallel to the latter in the closed position. The pivot axes therefore expediently extend in the rear edge region of the guide surfaces, while the joints of the ventilation flaps run on their front edge region. Here, as in the rest of the description, the position designation "front" and "rear" is always given in such a way that it denotes the flow running from front to back.

Sowohl unter konstruktivem als auch unter strömungstechnischem Gesichtspunkt is-t es vorteilhaft, wenn die hinteren Randbereiche der Leitflächen die Schwenkachsen mit in Richtung auf die jeweiligen Lüftungsklappen weisenden Randzonen überdecken. Die genannten Randzonen sind dabei zweckmäßig als gekrümmte Ansätze an die Leitflächen angesetzt, so daß sich größere Strömungswiderstände vermeiden lassen. Zugleich bilden die erwähnten Randzonen vorteilhafte Auflager für die jeweils benachbarten Lüftungsklappen in ihrer Schließstellung.From a constructional as well as a fluidic point of view, it is advantageous if the rear edge areas of the guide surfaces cover the swivel axes with edge zones pointing in the direction of the respective ventilation flaps. The edge zones mentioned are expediently attached to the guide surfaces as curved approaches, so that greater flow resistances can be avoided. At the same time, the edge zones mentioned form advantageous supports for the respectively adjacent ventilation flaps in their closed position.

Die in Strömungsrichtung vorderen Randbereiche der Leitflächen-sind ebenfalls in der Querschnittsdarstellung in Richtung auf die Lüftungsklappen gekrümmt, so daß sie nicht nur von strömungstechnischem Vorteil sind, sondern auch sehr wirkungsvolle Regenablaufrinnen bilden, die zur überdeckung mit den hinteren Randkanten der benachbarten Leitflächen dienen können.The front edge areas of the guide surfaces in the direction of flow are also curved in the cross-sectional illustration in the direction of the ventilation flaps, so that they are not only of advantage in terms of flow, but also form very effective rain gutters which can serve to overlap with the rear edge of the adjacent guide surfaces.

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 ausschnittsueise 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 detail.

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 enclosed by an entry frame 13 and also with Shaft walls 14 is provided. 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 900, 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 of which are shown in broken lines in FIG. 1 in their full opening position and in one case also in the full closing 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 exists between the ventilation flap 1 and the guide vanes 4, an angle of about 90 0, where the guide surfaces 4 with the main direction of the ventilation flow 2 form an angle of 45 °.

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 1 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 1. 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, it can be seen that the above-mentioned parts are double-shelled and that they are perforated on their side facing the space 11 to be vented. This will make a very good sound absorption achieved 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 (12)

1. Dachlüfter, bei welchem Lüftungsklappen (1, 3) eine Schachtöffnung (12) in ihrer öffnungsstellung freigeben und diese in ihrer Schließstellung, in welcher ihre vorderen und hinteren Randbereiche einander überlappen, verschließen, dadurch gekennzeichnet, daß die Lüftungsklappen (1, 3) zur Hauptrichtung (2) der Entlüftungsströmung geneigt verlaufende Leitflächen (4) aufweisen.1. Roof vent, in which ventilation flaps (1, 3) release a shaft opening (12) in their open position and close them in their closed position, in which their front and rear edge areas overlap, characterized in that the ventilation flaps (1, 3) have guide surfaces (4) which are inclined to the main direction (2) of the venting flow. 2. Dachlüfter nach Anspruch 1, dadurch gekennzeichnet, daß die Leitflächen (4) unter einem Winkel von etwa 45° gegenüber der Hauptrichtung (2) der Entlüftungsströmung geneigt sind.2. Roof fan according to claim 1, characterized in that the guide surfaces (4) are inclined at an angle of approximately 45 ° with respect to the main direction (2) of the ventilation flow. 3. Dachlüfter nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die Leitflächen (4) bezüglich ihres Abstandes voneinander und ihrer Ausdehnung derart bemessen sind, daß die Projektion ihrer vorderen Randkanten (5) in Hauptrichtung (2) der Entlüftungsströmung zumindest in Nähe der hinteren Randkanten (6) der benachbarten Leitflächen verlaufen.3. Roof fan according to claims 1 and 2, characterized in that the guide surfaces (4) are dimensioned with respect to their spacing from one another and their extent such that the projection of their front edge edges (5) in the main direction (2) of the ventilation flow at least in the vicinity of rear edge (6) of the adjacent guide surfaces. 4. Dachlüfter nach Anspruch 3, dadurch gekennzeichnet, daß die Projektion der voerden Randkanten (5) die hinteren Randkanten (6) überdeckt.4. Roof fan according to claim 3, characterized in that the projection of the front edge (5) covers the rear edge (6). 5. Dachlüfter nach Anspruch 3, dadurch gekennzeichnet, daß die Projektion der vorderen Randkanten (5) die hinteren Randkanten (6) mit angeschlossenen Regenablaufrinnen (7, 8) überdeckt.5. Roof fan according to claim 3, characterized in that the projection of the front edge (5) covers the rear edge (6) with connected rain gutters (7, 8). 6. Dachlüfter nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß die Lüftungsklappen (3) mit den Leitflächen (4) einteilig ausgebildet sind und mit diesen einen im Querschnitt rechten Winkel bilden.6. Roof fan according to claims 1 to 5, characterized in that the ventilation flaps (3) with the guide surfaces (4) are integrally formed and form a right angle in cross section with these. 7. Dachlüfter nach Anspruch 6, dadurch gekennzeichnet, daß die Lüftungsklappen (3) um ihren übergangsbereich zu den Leitblechen durchsetzende Achsen (9) aus ihrer öffnungsstellung in die Schließstellung verschwenkbar sind, in der die Leitflächen (4) etwa senkrecht zur Hauptrichtung der Entlüftungsströmung verlaufen.7. Roof fan according to claim 6, characterized in that the ventilation flaps (3) about their transition region to the guide plates passing axes (9) are pivotable from their open position into the closed position in which the guide surfaces (4) run approximately perpendicular to the main direction of the ventilation flow . 8. Dachlüfter nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß die Lüftungsklappen (1, 3) in der Hautprichtung (2) der Entlüftungsströmung hinter den Leitflächen (4) sowie aus einer zur Hauptrichtung (2) etwa parallelen Lage bis in ihre Schließstellung verschwenkbar sind.8. Roof fan according to claims 1 to 5, characterized in that the ventilation flaps (1, 3) in the skin configuration (2) of the ventilation flow behind the guide surfaces (4) and from an approximately parallel to the main direction (2) position to its closed position are pivotable. 9. Dachlüfter nach Anspruch 8, dadurch gekennzeichnet, daß die Achsen (9) im hinteren Randbereich der Leitflächen (4) und die Gelenke der Lüftungsklappen (1, 3) in deren vorderen Randbereich liegen.9. Roof fan according to claim 8, characterized in that the axes (9) in the rear edge area of the guide surfaces (4) and the joints of the ventilation flaps (1, 3) lie in their front edge area. 10. Dachlüfter nach den Ansprüchen 8 und 9, dadurch gekennzeichnet, daß die hinteren Randbereiche der Leitflächen (4) die Schwenkchsen (9) mit in Richtung auf die jeweiligen Lüftungsklappen (1) weisenden Randzonen (10) überdecken.10. Roof ventilator according to claims 8 and 9, characterized in that the rear edge regions of the guide surfaces (4) cover the swivel axes (9) with edge zones (10) pointing in the direction of the respective ventilation flaps (1). 11. Dachlüfter nach Anspruch 10, dadurch gekennzeichnet, daß die überdeckenden Randzonen (10) ein Auflager für die jeweils benachbarten Lüftungsklappen (1) in deren Schließstellung bilden.11. Roof fan according to claim 10, characterized in that the overlying edge zones (10) form a support for the respective adjacent ventilation flaps (1) in their closed position. 12. Dachlüfter nach den Ansprüchen 1 bis 11, dadurch gekennzeichnet, daß die Leitflächen (4) und/oder die Lüftungsklappen (1, 3) doppelschalig aus Blech ausgeführt sind, wobei die dem zu entlüftenden Raum (11) zugekehrten Schalen gelocht und der Raum zwischen den Schalen der Lüftungsklappen bzw. Leitflächen mit schalldämmendem Material ausgefüllt ist.12. Roof fan according to claims 1 to 11, characterized in that the guide surfaces (4) and / or the ventilation flaps (1, 3) are double-skin made of sheet metal, the shells facing the space to be ventilated (11) perforated and the space between the shells of the ventilation flaps or guide surfaces is filled with sound-absorbing material.
EP83109156A 1982-09-17 1983-09-16 Roof ventilator Expired EP0103861B1 (en)

Applications Claiming Priority (2)

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

Publications (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436239A1 (en) * 1989-12-01 1991-07-10 R.M.T.D. International B.V. Ventilation system

Citations (5)

* 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
DE1779255B2 (en) * 1968-07-24 1977-07-07 GaI International Gesellschaft für angewandte Lufttechnik der Windleitflächea-, Kombinations-und Brandlüftung mbH & Co KG, 4051 Korschenbroich ELEMENT FOR VENTILATION BLINDS
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

Patent Citations (5)

* 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
DE1779255B2 (en) * 1968-07-24 1977-07-07 GaI International Gesellschaft für angewandte Lufttechnik der Windleitflächea-, Kombinations-und Brandlüftung mbH & Co KG, 4051 Korschenbroich ELEMENT FOR VENTILATION BLINDS
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436239A1 (en) * 1989-12-01 1991-07-10 R.M.T.D. International B.V. Ventilation system

Also Published As

Publication number Publication date
DE3234518A1 (en) 1984-03-22
DE3371688D1 (en) 1987-06-25
EP0103861B1 (en) 1987-05-20
EP0103861A3 (en) 1984-11-14

Similar Documents

Publication Publication Date Title
DE202018102104U1 (en) Ventilation grille with foldable fins and cooperating wall flaps
DE102014100441A1 (en) Air deflector for an air vent
CH453629A (en) Device for ventilation of building spaces
DE19935338A1 (en) Air vents with fins
DE3131951C2 (en) Wind deflector device for a motor vehicle
DE112011105641T5 (en) Ventilation device for windows
EP0103861A2 (en) Roof ventilator
DE2265454C2 (en) Roof fan with flaps that control the size of the ventilation opening
EP0036438A2 (en) Swivel damper for air ducts having a circular cross section serving as sealing and/or control damper
EP0918687B1 (en) Sound proof hangar for airplanes
DE202022100132U1 (en) Grid air vent device for vehicle
EP2614706B1 (en) Roof ridge construction
DE2842727A1 (en) DEVICE FOR THE CONTROLLED DELIVERY OF AIR INTO VENTILATION AND / OR AIR CONDITIONING
DE3234517A1 (en) ELEMENT FOR VENTILATION SHUTTERS
DE69302937T2 (en) Pull check valve for a fan
DE1953889C3 (en) Draft shield for an outside wall oven
CH371879A (en) Ventilation attachment with rain cover arranged on a roof
DE2318885A1 (en) ROOF VENTILATOR
DE2756568A1 (en) Ventilation system adjustable air inlet - has tilting slats with core enclosed in layer giving weather protection and sound deadening
DE2659748C2 (en) Roof fan for halls
DE2625575A1 (en) Natural draught ventilator for horizontal factory roof - has vertical V-shaped louvres with rain gutters on each limb
DE3222387C2 (en)
DE8014754U1 (en) ROOF VENTILATOR
DE2708774A1 (en) Natural draught ventilator for horizontal factory roof - has vertical V-shaped louvres with rain gutters on each limb
DE2259920C3 (en) Ridge cover for roofs covered with profiled roofing panels

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR IT LU NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE DE FR IT LU NL

17P Request for examination filed

Effective date: 19841220

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR IT LU NL

REF Corresponds to:

Ref document number: 3371688

Country of ref document: DE

Date of ref document: 19870625

ITF It: translation for a ep patent filed
ET Fr: translation filed
BECA Be: change of holder's address

Free format text: 870520 *ROGAL G- FUR ANGEWANDTE LUFTTECHNIK M.B.H.:MALKASTENSTRASSE 3, D-4000 DUSSELDORF

BECN Be: change of holder's name

Effective date: 19870520

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
NLT1 Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1

Owner name: ROGAL GESELLSCHAFT FUER ANGEWANDTE LUFTTECHNIK MBH

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

Ref country code: FR

Ref legal event code: CA

ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19940919

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19940930

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19941001

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19941007

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19950916

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19950930

BERE Be: lapsed

Owner name: ROGAL G- FUR ANGEWANDTE LUFTTECHNIK M.B.H.

Effective date: 19950930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19960401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19960531

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19960401

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19961121

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980603