DE497929C - Ventilation flap that opens automatically under the influence of an air flow and closes automatically after the air flow has stopped - Google Patents

Ventilation flap that opens automatically under the influence of an air flow and closes automatically after the air flow has stopped

Info

Publication number
DE497929C
DE497929C DER74047D DER0074047D DE497929C DE 497929 C DE497929 C DE 497929C DE R74047 D DER74047 D DE R74047D DE R0074047 D DER0074047 D DE R0074047D DE 497929 C DE497929 C DE 497929C
Authority
DE
Germany
Prior art keywords
air flow
stopped
influence
automatically
ventilation flap
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
DER74047D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DER74047D priority Critical patent/DE497929C/en
Application granted granted Critical
Publication of DE497929C publication Critical patent/DE497929C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1486Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by bearings, pivots or hinges
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)

Description

Sich unter der Einwirkung eines Luftstromes selbsttätig öffnende und nach Aufhören des Luftstromes selbsttätig schließende Lüftungsklappe Bei bekannten, sich unter der Einwirkung eines Luftstromes selbsttätig öffnenden und nach Aufhören des Luftstromes selbsttätig schließenden Lüftungsklappen wird die Öffnung durch mehrere um waagerechte Achsen drehbare, durch Eigengewicht in die Antfangsstellung zurückkehrende Weißblech- oder Aluminiumstreifen abgedeckt. Ein solcher Abschluß ist aber mangelhaft, denn schon ein leichtes Verschmutzen der Achsenlager verhindert das selbsttätige Öffnen bzw. Schließen, -da nur der Unterschied des Luftdruckes auf die beiden Flächen der Streifen, die durch die Drehachsen in zwei ungleiche Teile geteilt werden, zur Wirkung kommen kann. Je mehr sich aber die Klappen öffnen, desto stärker wirkt das Übergewicht im Sinne des Schließens der Klappen, während der Luftdruck nur mit immer kleiner werdender senkrechter Komponente die Klappen zu öffnen strebt. Die Klappen öffnen sich daher nur teilweise, und deshalb legt sich an ihnen viel Staub ab, was besonders bei- Glaskläppcu wegen des verminderten Lichtzutrittes nachteilig ist.Automatically opening under the action of a stream of air and ventilation flap that closes automatically after the air flow has stopped. automatically opening under the action of a stream of air and after stopping of the air flow automatically closing ventilation flaps, the opening is through several rotatable around horizontal axes, by own weight in the initial position returning tinplate or aluminum strips covered. Such a conclusion but is inadequate, because even a slight soiling of the axle bearings prevents it the automatic opening or closing, because only the difference in air pressure on the two faces of the strips passing through the axes of rotation in two unequal Parts are divided, can come into effect. But the more the flaps open, the more the excess weight acts in the sense of closing the flaps while the air pressure only with decreasing vertical components the flaps strives to open. The flaps therefore only partially open, and therefore lays a lot of dust accumulates on them, which is especially true of glass claps because of the diminished Light access is disadvantageous.

Diese Nachteile werden gemäß der Erfindung dadurch vermieden, daß die Drehachse der Flügelklappe gegen die Strömungsrichtung der Luft etwas geneigt ist. In der Zeichnung ist ein Ausführungsbeispiel der Erfindung in Abb. r in Vorderansicht, in Abb. z in Seitenansicht dargestellt. Abb. 3 und q. zeigen Einzelheiten. Die kreisrunde oder quadratische Öffnung eines Luftkanals, wird durch zwei mit Blech eingefaßte Glas, scheiben a abgeschlossen. Diese Flügel sind um zwei nahe nebeneinander liegende, parallele, nahezu senkrechte Achsen b drehbar. Durch geringe Schrägstellung der Achsen b ,gegen die Strömungsrichtung der Luft wird das erforderliche Übergewicht erzielt, damit sich die Flügel beim Abstellen des Gebläses von selbst wieder schließen. Das Schließmoment bei nahezu geschlossenen Flügeln und das Öffnungsmoment durch den Luftdruck sind hier gleichzeitig am größten und nehmen beide, wenn sich die Klappe weiter öffnet, ab, so daß ein starkes und verläßliches Öffnen der Flügel erzielt wird. Das Übergewicht zum selbsttätigen Schließen besteht aber -nur, wenn sich die Flügel nicht ganz um go° öffnen, daher ist zur Begrenzung des öffnens der wellenförmige Draht c vorgesehen. Die Drehachsen b sind oben und unten in durchlochten Blechblättchen,e geführt, und die Achsen laufen zur Verminderung der Reibung unten auf Glasplättchen f. Damit die in der Mittelebene strömende Luft nicht durch den unvermeidlichen Spalt zvvi,-schen den beiden Achsen. entweichen kann, verläuft in der Mittelebene lein keilförmiger Blechstreif en ä (Abb. q.), der die Luft auf die Flügel ablenkt und den Abschluß verbessert. Der Abschluß kann durch Unterlage eines Gummiringes noch verbessert werden.These disadvantages are avoided according to the invention in that the axis of rotation of the flap is slightly inclined against the direction of air flow is. In the drawing, an embodiment of the invention is shown in Fig.r in a front view, shown in side view in Fig. z. Fig. 3 and q. show details. The circular one or square opening of an air duct, is surrounded by two with sheet metal Glass, slices a completed. These wings are surrounded by two closely spaced parallel, almost vertical axes b rotatable. Due to the slight inclination of the Axis b, against the direction of flow of the air, becomes the required excess weight achieved so that the blades close again by themselves when the fan is switched off. The closing moment with almost closed sashes and the opening moment through the air pressure are greatest here at the same time and both decrease when the The flap opens further, so that the wings open strongly and reliably is achieved. The predominance of automatic closing only exists, however, if the sashes do not open completely by go °, which is why the opening is limited wavy wire c provided. The axes of rotation b are perforated at the top and bottom Sheet metal, e guided, and the axes run down to reduce friction on glass plate f. So that the air flowing in the central plane does not pass through the unavoidable gap zvvi, -schen the two axes. can escape, runs in the central plane is a wedge-shaped sheet metal strip (Fig. q.), which the air on the Deflects wings and improves the finish. The conclusion can be obtained by submitting a Rubber ring to be improved.

An Stelle zweier Flügel kann, insbesondere bei quadratischer Öffnung, auch nur ein Flügel vorgesehen werden.Instead of two wings, especially with a square opening, also only one wing can be provided.

Claims (1)

PATENTANSPRUCH: Sich unter der Einwirkung eines Luftstromes selbsttätig öffnende und nach Aufhören des Luftstromes selbsttätig schließende Lüftungsklappe, dadurch gekennzeichnet, daß die Drehachse (b) der Flügelklappe (a) gegen die Strömungsrichtung der Luft etwas geneigt ist.PATENT CLAIM: Self-acting under the action of a stream of air ventilation flap that opens and closes automatically after the air flow has ceased, characterized in that the axis of rotation (b) of the wing flap (a) is against the direction of flow is slightly inclined to the air.
DER74047D Ventilation flap that opens automatically under the influence of an air flow and closes automatically after the air flow has stopped Expired DE497929C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER74047D DE497929C (en) Ventilation flap that opens automatically under the influence of an air flow and closes automatically after the air flow has stopped

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER74047D DE497929C (en) Ventilation flap that opens automatically under the influence of an air flow and closes automatically after the air flow has stopped

Publications (1)

Publication Number Publication Date
DE497929C true DE497929C (en) 1930-05-15

Family

ID=7414733

Family Applications (1)

Application Number Title Priority Date Filing Date
DER74047D Expired DE497929C (en) Ventilation flap that opens automatically under the influence of an air flow and closes automatically after the air flow has stopped

Country Status (1)

Country Link
DE (1) DE497929C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE896260C (en) * 1951-07-20 1953-11-09 Otto Heinz Dipl-Ing Brandi Procedure for regulating the proportion of outside air in systems consisting of a large number of air treatment devices
DE1191536B (en) * 1960-04-13 1965-04-22 Helios Appbau K G Flap lock for built-in fans
DE1223128B (en) * 1960-01-06 1966-08-18 Vent Axia Ltd Shutter designed for fans
EP1835238A2 (en) * 2006-03-15 2007-09-19 MAICO ELEKTROAPPARATE-FABRIK GmbH Air duct with a non-return valve activated by gravity

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE896260C (en) * 1951-07-20 1953-11-09 Otto Heinz Dipl-Ing Brandi Procedure for regulating the proportion of outside air in systems consisting of a large number of air treatment devices
DE1223128B (en) * 1960-01-06 1966-08-18 Vent Axia Ltd Shutter designed for fans
DE1191536B (en) * 1960-04-13 1965-04-22 Helios Appbau K G Flap lock for built-in fans
EP1835238A2 (en) * 2006-03-15 2007-09-19 MAICO ELEKTROAPPARATE-FABRIK GmbH Air duct with a non-return valve activated by gravity
EP1835238A3 (en) * 2006-03-15 2009-11-18 MAICO ELEKTROAPPARATE-FABRIK GmbH Air duct with a non-return valve activated by gravity

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