EP0499338A2 - Lüftungsvorrichtung - Google Patents

Lüftungsvorrichtung Download PDF

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Publication number
EP0499338A2
EP0499338A2 EP92200447A EP92200447A EP0499338A2 EP 0499338 A2 EP0499338 A2 EP 0499338A2 EP 92200447 A EP92200447 A EP 92200447A EP 92200447 A EP92200447 A EP 92200447A EP 0499338 A2 EP0499338 A2 EP 0499338A2
Authority
EP
European Patent Office
Prior art keywords
valve member
air vent
retaining
valve
box
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
EP92200447A
Other languages
English (en)
French (fr)
Other versions
EP0499338A3 (en
EP0499338B1 (de
Inventor
Adrianus Jacobus Zwaan
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.)
ZWAAN ADRIANUS J
Original Assignee
ZWAAN ADRIANUS J
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
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Application filed by ZWAAN ADRIANUS J filed Critical ZWAAN ADRIANUS J
Publication of EP0499338A2 publication Critical patent/EP0499338A2/de
Publication of EP0499338A3 publication Critical patent/EP0499338A3/en
Application granted granted Critical
Publication of EP0499338B1 publication Critical patent/EP0499338B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/18—Air-flow control members, e.g. louvres, grilles, flaps or guide plates specially adapted for insertion in flat panels, e.g. in door or window-pane

Definitions

  • This invention relates to an air vent comprising a substantially plate-shaped front member provided with vent openings and guide means, a plate-shaped valve member provided with guide means adapted to cooperate with the guide means of the front member, and with openings located in such a way that the vent openings can be cleared in part or in whole or not at all by sliding the front member and the valve member relative to each other, and an operating mechanism adapted to slide the valve member relative to the front member so as to bring the valve member into an open, closed or partly opened position.
  • Such an air vent is known from Netherlands patent application 7201567.
  • the vent openings in the front member are sealingly overlapped by the plate surface portions between the vent openings in the valve member, which is in surface-to-surface contact with the front member.
  • the valve member consists of a plastics plate, while the front member is made of metal, for instance an aluminum section.
  • leakage experienced as draught, may occur owing to bending of the valve member as a result of pressure differences, for instance in the case of wind loads. Further, such leakage can lead to extremely irritating whistling noises.
  • the pressure difference that causes the leakage can be removed in such a manner that the air vent closes again.
  • the pressure will rapidly become equal to the pressure that previously caused the leakage. This will again lead to leakage and may result in a rattling or trembling air vent, which effect can be aggravated by varying wind loads.
  • the object of the invention is to eliminate the above-described disadvantages by considerably reducing the chance of leakages in an air vent of the type described in the preamble.
  • the front member and the valve member together with a plate-shaped retaining member form an assembly, in which the valve member is locked between the part of the front member provided with the vent openings and the plate-shaped retaining member which is rigidly mounted relative to the front member and provided with vent openings which are equal to and in alignment with the vent openings in the front member.
  • a still further improved seal can be obtained in accordance with a further embodiment of the invention by means of a second assembly consisting of a front member, a valve member and a retaining member, which units have been inter-connected to form a box-like element by means of a material providing a thermal insulation, the two front members forming external surfaces of the box-like element and the operating mechanism bringing the two valve members simultaneously into the open, closed or partly opened position.
  • a second assembly consisting of a front member, a valve member and a retaining member, which units have been inter-connected to form a box-like element by means of a material providing a thermal insulation, the two front members forming external surfaces of the box-like element and the operating mechanism bringing the two valve members simultaneously into the open, closed or partly opened position.
  • the pressure difference across each of the two valve members is smaller - ideally by half - than the pressure difference in the case of an air vent with only one valve member, so that the chance of leakage is accordingly smaller.
  • a further advantage of this embodiment is that by providing a thermal interruption, heat insulation is improved.
  • one of the assemblies is detachably and adjustably connected to the box-like element and the other assembly is provided with guide means which enable demounting of the retaining member and the valve member from the box-like element.
  • the above-mentioned known air vent comprises guide means in the form of a substantially U-shaped channel extending in the sliding direction of the valve member along two opposite longitudinal edges of the valve member.
  • This guide system has proved its merits in the course of time.
  • the detachable assembly is demountable in a simple manner by sliding plate-shaped members mounted in the guide out of this guide.
  • the other assembly comprises a U-shaped channel which receives both the retaining member and the valve member, the length of one of the legs of the channel being reduced in such a manner that the retaining member and the valve member can be demounted from the mounting formed by the two channels, there being provided locking means cooperating with the one detachable assembly, which locking means in the mounted position of the detachable assembly prevent the retaining member and the valve member from disengaging from the confinement of the channels.
  • the non-detachable assembly can also be demounted quickly and simply for cleaning. Cumulatively acting clearances can be compensated for, and hence the sealing effect can again be improved, when, in accordance with a further embodiment of the invention, the locking means consist of a longitudinal flange connected to the front member and/or the retaining member of the one assembly and a strip of resilient material connected to the retaining member of the other assembly.
  • pressure differences can be taken up in a stepped manner by virtue of the box-like design.
  • This effect can be further improved when, in accordance with a further embodiment of the invention, the longitudinal edge and one of the external walls of the box-like element are provided with pressure equalizing bores, these pressure equalizing bores in the external wall in question terminating in an inner space of the box-like element, which is separated by the longitudinal flange and the strip of resilient material from an inner space which is partly defined by the retaining means provided with vent openings.
  • valve members in particular valve members of a relatively great height
  • the retaining members of the two assemblies are mutually supported by at least one strip-shaped member which is located within the box-like element and made of a resilient material, which strip-shaped member preferably extends parallel to the sliding direction of the valve members.
  • the air vent shown in the drawings comprises a first section 1, which, via a section 2 of a thermally insulating material, for instance a plastics, is coupled with a second section 3 which extends throughout the height of the air vent and, by means of a section 4 similar to section 2, is coupled with a section 5.
  • the sections 2, 3, and 5 are made of a relatively stiff and form-retaining material, such as aluminium.
  • the section 1 comprises an insertion opening 6, while the section 5 has a retaining flange 7.
  • a further section 8 is so designed that it fits between sections 1 and 5 and can be coupled to the section 1 by means of an insertion flange 9.
  • Adjacent the point where section 8 adjoins section 5, the former has a flange 10 which at several points is provided with bores for passing therethrough a screw 11 which further extends through bores provided in line therewith in the retaining flange 7 of the section 5.
  • a box-like construction is formed which is closed at its ends by end partitions (not shown) which are secured by means of screws 12 in the longitudinal recesses 13 provided for that purpose in the sections 1, 3, and 5.
  • the recesses 13 of the section 3 further serve for clampingly mounting a plurality of local retaining strips 14 for receiving a plurality of covering strips 15 extending throughout the width of the air vent to prevent rain from entering.
  • the section 8, which is detachably coupled to the sections 1 and 5, comprises a multiplicity of slot-shaped vent openings 16, as shown in Fig. 2. Viewed in the longitudinal direction of the air vent, the ventilation openings are mutually separated by plate surfaces 17 which are slightly wider than the vent openings.
  • the drawings show an embodiment which is preferably used for relatively high air vents. To provide for sufficient rigidity, pairs of openings 16 provided above each other are mutually separated by a plate-shaped material bridge 18.
  • the section 8 comprises adjacent its two longitudinal edges a rib 19 which forms a guide channel 20 together with a plate portion of the section disposed beyond the vent opening and with a portion of the section that connects that plate portion and the rib.
  • a valve member 21 and a retaining member 22 have been slid into the guide channel 20.
  • the valve member 21 is in surface-to-surface contact with the part of the section 8 that is provided with vent openings 16, while the retaining member 22 in turn is in surface-to-surface contact with the valve member 21.
  • the retaining member 22 has a length which is substantially equal to that of the section 8, the arrangement being such that shifting of the retaining member 22 is prevented by the end partitions (not shown).
  • the valve member 21, on the other hand is shorter as viewed in the longitudinal direction thereof, in such a manner that it can be slid back and forth in longitudinal direction by means of a turning knob 23 and a transmission mechanism (not shown).
  • the valve member 21 comprises vent openings 24 and the retaining member 22 comprises vent openings 25, which vent openings all have the same dimensions and location as those in the section 8, while in all three elements the same number of vent openings have been provided.
  • the vent openings 25 are in alignment with those in the section 8.
  • the longitudinal displacement of the valve member 21 by means of the turning knob 23 is defined between an open position wherein the vent openings 24 align with the vent openings 16 and 25, as shown in Fig. 1, and a closed position wherein the vent openings 24 are covered entirely by the plate surfaces 17 on one side and the corresponding plate surfaces of the retaining member 22 on the other side.
  • Fig. 2 shows the closed position. It will be clear that between the open and the closed position, a large number of intermediate positions are possible.
  • section 3 is provided with vent openings 26 and guide channels 27, in which are mounted a sliding valve member 28 with vent openings 29 and a non-sliding retaining member 30 with vent openings 31.
  • the valve member 28 and the valve member 21 can be slid simultaneously by means of the turning knob 23, in such a manner that the vent openings 24 and 29 are simultaneously cleared completely, closed or partly opened.
  • section 8 with associated parts can be demounted in a simple manner by unscrewing screws 11, whereafter section 8 can be swung sideways and taken from the section 1 by pulling the insertion flange 9 from the insertion opening 6.
  • the retaining member 22 and the valve member 21 can then be demounted in a simple manner by sliding them laterally out of the guide channels 20.
  • the section 3 is not demountable in this manner.
  • the lower guide channel 27 comprises a rib 32 of reduced dimensions, such that the retaining member 30 and the valve member 28, after removal of section 8, can be detached from the guide channel 27 by pushing it up and swinging it sideways.
  • the retaining member 30 and hence the valve member 28 are retained in position by a resilient plastics strip 33 connected to the retaining member, while a hold-down flange 34, which is part of the section 8, bears on this strip 33.
  • a plurality of apertures 35 which interconnect the space between the retaining members 25 and 30 and a space 36 between the sections 3, 4, and 5 under the hold-down flange 34.
  • This space 36 communicates with the outside air via apertures 37 in the section 3.
  • the section 8 further comprises two longitudinally extending receiving channels 38 for an insect wire screen 39 which, therefore, is detachable together with the section 8, for instance for the purpose of cleaning or replacement, and subsequently can be slid out of the receiving channels 38 of the section 8.
  • the valve members 21 and 28 as well as retaining members 22 and 30 can be made of plastics so as to give the valve members good sliding properties.
  • a strip-shaped member 40 is provided which extends in longitudinal direction and receives support from the two retaining members.
  • the strip-shaped member 40 is preferably made of a resilient plastics material, so that independently of the tolerances of the various members, at all times a proper hold-down and relative support can be maintained.
  • the strip-shaped member 40 consists of two parts.
  • an air vent is provided which in the closed position is always sealed in a particularly effective manner.
  • this is accomplished by locking a valve member in surface-to-surface contact between members arranged on opposite sides thereof, whereby the surface-to-surface engagement of the valve member with an adjacent member prevents bending of the valve member as a result of pressure differences.
  • the surface-to-surface engagement not only prevents bending but also improves the sealing effect in that the member which the valve member comes in contact with is provided, opposite the vent openings in the valve member, with plate surfaces that overlap those openings.
  • a further improvement of the sealing effect is realized by the double design of this improved sealing, whereby, moreover, an enclosed box-like space is formed, which provides for a stepped taking up of a pressure difference across the air vent, i.e., the pressure difference to be taken up is divided between the two seals.
  • the sections 3 and 8 are preferably made of a relatively stiff material, for instance aluminium, while the valve members 21 and 29 as well as the retaining members 22 and 30 are preferably made of a plastics material having a low coefficient of friction.
  • the resilient strip-shaped member 40 is present, pressing the plastics parts in the direction of the stiffer sections. At the same time, this leads to a closer contact and hence to an improved seal between the various members.
  • section 3 could be made of three parts, with the end partitions (not shown) forming a framework together with the top and bottom sections, the two valve assemblies being detachably mounted therein.
  • the material bridges 18 could be omitted.
  • a strip-shaped member 40 can be provided, which, if so desired, could extend vertically rather than horizontally, i.e., in vertical direction of the air vent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Air-Flow Control Members (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
EP19920200447 1991-02-15 1992-02-17 Lüftungsvorrichtung Expired - Lifetime EP0499338B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9100271 1991-02-15
NL9100271A NL9100271A (nl) 1991-02-15 1991-02-15 Ventilatieschuif.

Publications (3)

Publication Number Publication Date
EP0499338A2 true EP0499338A2 (de) 1992-08-19
EP0499338A3 EP0499338A3 (en) 1992-12-30
EP0499338B1 EP0499338B1 (de) 1996-01-31

Family

ID=19858886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920200447 Expired - Lifetime EP0499338B1 (de) 1991-02-15 1992-02-17 Lüftungsvorrichtung

Country Status (3)

Country Link
EP (1) EP0499338B1 (de)
DE (1) DE69207926D1 (de)
NL (1) NL9100271A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2909541A4 (de) * 2012-09-17 2016-07-27 Swegon Ab Gleitventil für eine lüftungsvorrichtung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL191068C (nl) * 1993-01-26 1996-05-02 Zwaan Adrianus J Ventilatieschuif.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR394337A (fr) * 1908-09-15 1909-01-20 Alexander William Stewart Perfectionnements dans les bouches ou lanternes de ventilation
NL7201567A (de) * 1972-02-07 1973-08-09

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR394337A (fr) * 1908-09-15 1909-01-20 Alexander William Stewart Perfectionnements dans les bouches ou lanternes de ventilation
NL7201567A (de) * 1972-02-07 1973-08-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2909541A4 (de) * 2012-09-17 2016-07-27 Swegon Ab Gleitventil für eine lüftungsvorrichtung

Also Published As

Publication number Publication date
EP0499338A3 (en) 1992-12-30
NL9100271A (nl) 1992-09-01
EP0499338B1 (de) 1996-01-31
DE69207926D1 (de) 1996-03-14

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