EP0045351B1 - Volet anti-retour pour conduits à gaz rectangulaires - Google Patents

Volet anti-retour pour conduits à gaz rectangulaires Download PDF

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Publication number
EP0045351B1
EP0045351B1 EP81103301A EP81103301A EP0045351B1 EP 0045351 B1 EP0045351 B1 EP 0045351B1 EP 81103301 A EP81103301 A EP 81103301A EP 81103301 A EP81103301 A EP 81103301A EP 0045351 B1 EP0045351 B1 EP 0045351B1
Authority
EP
European Patent Office
Prior art keywords
frame
flap
flaps
backpressure
backflow
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
EP81103301A
Other languages
German (de)
English (en)
Other versions
EP0045351A2 (fr
EP0045351A3 (en
Inventor
Hans-Joachim Naber
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.)
Naber and Co KG
Original Assignee
Naber and Co KG
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 Naber and Co KG filed Critical Naber and Co KG
Publication of EP0045351A2 publication Critical patent/EP0045351A2/fr
Publication of EP0045351A3 publication Critical patent/EP0045351A3/de
Application granted granted Critical
Publication of EP0045351B1 publication Critical patent/EP0045351B1/fr
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

Definitions

  • the invention relates to a backflow flap according to the preamble of claim 1.
  • Such backflow flaps were previously attached to the ventilation ducts as individual parts. They were often located on the outside of the ventilation ducts, i.e. generally attached to the outer wall of the building in the form of a plurality of flaps arranged one below the other. These flaps were exposed to weather and wind and caused wind noise. Depending on the wind, they were also opened a slot so that drafts penetrated and the intended effect of preventing a backflow against the ventilation flow was not achieved. Such backflow flaps were also not suitable for preventing insects from entering the building. On the other hand, it was not possible to install fine-meshed insect screens after the backflow flaps forming the outer end of the ventilation channels.
  • backflow flaps For many purposes, it has so far not been possible to attach backflow flaps. This applies in particular to various distribution ducts, for example Y distributors or trousers pieces, cross distributors etc. In terms of production, it has so far been practically impossible or only possible with great effort to provide backflow flaps in the individual supply air and exhaust air ducts. The result of this was that the air streams were mixed and often unwanted exhaust gases were directed to where they should not be directed. This fact has also led to strict building regulations regarding the introduction of exhaust gases from different sources into a common ventilation chimney.
  • flat duct systems which are mainly used as ventilation ducts in extractor hoods, clothes dryers and small ventilation systems as well as small ventilation systems.
  • Such flat channels are usually about 7 to 20 cm wide and only 3 to 15 cm high. The same applies to use in flat, rectangular, flexible hoses that are used for the same purposes.
  • a similar wall box is known from British patent specification 1 326 204, which likewise cannot be inserted into flat or square channels.
  • a backflow flap according to the preamble of claim 1 is known from German Offenlegungsschrift 2 901 877.
  • This backflow flap is specially designed as a closure device with reliable gas sealing for gas lines in nuclear reactors with radioactive gases.
  • a very narrow frame is provided, the surface of which has a slight inclination and the outer surfaces of which are sealed against the inner wall of the tube by means of special sealing materials.
  • a plate is arranged, which presses flat against sealing materials that are provided around the circumference of this plate.
  • this backflow flap does not appear to be very suitable for use in simple house systems and ventilation ducts, such as those found in household clothes dryers and extractor hoods.
  • such a flap should be relatively expensive because of the high sealing effort. This is especially true because the seal has to be specially adapted to the respective channels.
  • the invention is based on the object of designing a backflow flap according to the preamble of claim 1 in such a way that the disadvantages of the prior art are avoided and that it is simple to produce, insertable and easy to insert into different types of ventilation channels and at different depths as an insert .
  • Such a backflow flap can thus be inserted into any ventilation channel. If, for example, it is inserted into the outer opening of a ventilation duct attached to an outer wall of the building, the individual flaps are arranged in the interior of the frame so that they are protected from wind and weather. Rattling is avoided, as is weather impairment. It is easily possible to install an insect screen on the outer wall, even after the backflow flap.
  • the backflow flap according to the invention can be inserted into the ventilation channels as far as desired. If, for example, in the outermost position of the backflow flap, there is still a clattering of the flaps and thus the penetration of outside air into the interior of the building, this can easily be stopped by moving the backflow flap a little further towards the interior of the building.
  • the backflow flap according to the subject of the invention can be used particularly advantageously in various distribution channels, for example Y-shaped distribution channels.
  • distribution channels are usually made of sheet metal or plastic, without the possibility of attaching backflow flaps to the respective flow-side ends of the branch channels, so that undesired mixing of the individual air streams resulted.
  • the lower inside of the frame is inclined slightly downward downstream.
  • the purpose of this is to ensure that any liquids that come into contact with the backflow flap from the outside or condensate water that forms on them is drained outwards. It is thus possible to achieve further advantages with the subject matter of the invention, which could not be achieved by installing flaps arranged one above the other on the outer wall of the building.
  • the two flaps are arranged one above the other and conveniently articulated on the side walls of the frame.
  • the upper edge of the lower backflow flap serves as a stop for the free end of the upper backflow flap.
  • the arrangement of two backflow flaps one above the other has proven to be particularly expedient in the usual dimensions of backflow flaps, the width of such flaps being approximately 1 m to 1.5 m and the height approximately 50 cm to 1 m.
  • Metal sheet for example galvanized sheet metal, or plastic such as polypropylene is expediently used as the material for the backflow flap.
  • the backflow flap is generally designated 1. It has a rectangular frame 2. In this frame 2, two flaps 3 and 4 are arranged one above the other. These flaps are hinged to the side walls 6 and 7 of the frame 2. The upper edge of the lower flap 4 also serves as a stop 9 for the free end of the upper flap 3. For the free end of the lower flap 4, two stops 8 provided inside the frame 2 serve as a stop.
  • the direction of flow through the backflow flap is indicated in FIG. 2 by arrows.

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)
  • Ventilation (AREA)

Claims (4)

1. Clapet de non-retour pour canaux de conduction de gaz rectangulaires, comprenant un cadre pouvant être introduit par glissement dans le canal et dont les surfaces extérieures sont essentiellement planes, et une fermeture en forme de volet fixé au cadre (2) et fermant d'une façon étanche sur celui-ci, caractérisé en ce que
a) la fermeture est constituée par deux clapets (3, 4) disposés l'un au-dessus de l'autre, leurs axes de pivotement étant placés à proximité de l'ouverture d'entrée pratiquée dans le cadre (2) pour laisser passer un courant de gaz,
b) la hauteur de chacun des clapets (3, 4), perpendiculaire à leur axe de pivotement, est inférieure à la profondeur du cadre (2), ce dernier ayant la forme générale d'un parallélépipède disposé parallèlement à l'axe longitudinal du canal, et
c) une butée inférieure (8) pour le clapet inférieur est disposée sur le fond (5) du cadre et une butée supérieure (9) est prévue pour l'arête inférieure du clapet supérieur (3), l'arête supérieure ou le dispositif de pivotement du clapet inférieur servant en même temps de butée (9) pour le clapet supérieur.
2. Clapet de non-retour selon la revendication 1, caractérisé en ce que le fond (5) du cadre (2), est légèrement incliné vers le bas en direction du courant.
3. Clapet de non-retour selon la revendication 1 ou 2, caractérisé en ce que les deux clapets (3, 4) sont suspendus par des articulations disposées sur les côtés intérieurs (6, 7) du cadre (2).
4. Clapet de non-retour selon la revendication 1 ou 2, caractérisé en ce que le matériau utilisé est de la tôle de métal ou de préférence une matière plastique comme le polypropylène.
EP81103301A 1980-08-06 1981-05-02 Volet anti-retour pour conduits à gaz rectangulaires Expired EP0045351B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8021092U 1980-08-06
DE19808021092U DE8021092U1 (de) 1980-08-06 1980-08-06 Rueckstauklappe fuer rechteckige entlueftungskanaele, insbesondere verteilerkanaele oder flachkanaele

Publications (3)

Publication Number Publication Date
EP0045351A2 EP0045351A2 (fr) 1982-02-10
EP0045351A3 EP0045351A3 (en) 1982-03-31
EP0045351B1 true EP0045351B1 (fr) 1985-04-10

Family

ID=6717825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103301A Expired EP0045351B1 (fr) 1980-08-06 1981-05-02 Volet anti-retour pour conduits à gaz rectangulaires

Country Status (2)

Country Link
EP (1) EP0045351B1 (fr)
DE (2) DE8021092U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5360372A (en) * 1989-05-02 1994-11-01 Gpac, Inc. Control system for doors of a negative air pressure enclosure

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2901877A1 (de) * 1979-01-18 1980-07-31 Meissner & Wurst Verschlussvorrichtung fuer durchtrittsoeffnungen von gasfuehrenden stroemungskanaelen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1326204A (en) * 1970-08-22 1973-08-08 Bloxvich Lock Stamping Reigisters for ducted warm air heating systems
DE2904320C2 (de) * 1979-02-05 1981-12-17 Kiparski, Heinz, 4390 Gladbeck Mauerkasten zum Anschluß an das Ende eines flachen Lüftungskanals einer Dunstabzugshaube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2901877A1 (de) * 1979-01-18 1980-07-31 Meissner & Wurst Verschlussvorrichtung fuer durchtrittsoeffnungen von gasfuehrenden stroemungskanaelen

Also Published As

Publication number Publication date
DE8021092U1 (de) 1980-11-06
DE3169791D1 (en) 1985-05-15
EP0045351A2 (fr) 1982-02-10
EP0045351A3 (en) 1982-03-31

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