EP0142834B1 - An air ventilation device - Google Patents

An air ventilation device Download PDF

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Publication number
EP0142834B1
EP0142834B1 EP84113879A EP84113879A EP0142834B1 EP 0142834 B1 EP0142834 B1 EP 0142834B1 EP 84113879 A EP84113879 A EP 84113879A EP 84113879 A EP84113879 A EP 84113879A EP 0142834 B1 EP0142834 B1 EP 0142834B1
Authority
EP
European Patent Office
Prior art keywords
air
opening
guide vane
openings
ventilation
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
EP84113879A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0142834A3 (en
EP0142834A2 (en
Inventor
Stig Wikström
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.)
ABB Technology FLB AB
Original Assignee
Flaekt AB
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 Flaekt AB filed Critical Flaekt AB
Priority to AT84113879T priority Critical patent/ATE45028T1/de
Publication of EP0142834A2 publication Critical patent/EP0142834A2/en
Publication of EP0142834A3 publication Critical patent/EP0142834A3/en
Application granted granted Critical
Publication of EP0142834B1 publication Critical patent/EP0142834B1/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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/072—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser of elongated shape, e.g. between ceiling panels

Definitions

  • the present invention relates to a ventilation device of the kind set forth in the preamble of Claim 1.
  • the side members extend parallel with respective edges of a guide vane assembly and together form in the region of the vane assembly, when seen in cross-section, a broken circular chamber which exhibits a downwardly facing air-outlet opening and an upwardly facing air-inlet opening.
  • the side members are provided with abutment surfaces for supporting the free edge of the guide vane assembly.
  • the guide vane assembly comprises a thick body section, which is located centrally of the circular space, and an air control fin which extends outwardly from said body section. When the control fin is positioned centrally between the side members, the exiting air flow is directed substantially straight out through the slot-like outlet opening. When the fin is moved to one side of the circular chamber, the exiting out-flow will be deflected accordingly.
  • the object of the present invention is to provide an air ventilation device, or air terminal device, of the aforesaid kind, which is of simple and stable construction; which can be readily adjusted externally without the aid of special tools herefor; which is not affected by disturbances in operational conditions; which is not easily damaged and is thus highly reliable; which can be assembled to form longitudinal and transverse modules; and which constitutes a step forward in this art.
  • this invention consists in ventilation device of the aforesaid kind having the characterizing features set forth in the characterizing clause of the following Claim 1.
  • the ventilation device is provided with positional setting means which enables the angular setting of each guide vane to be readily adjusted.
  • the body section of the guide vane has an appreciable thickness, since this body section influences the flow conditions in the outlet opening, and particularly contributes towards providing a possibility of creating a strong flow of ventilation air closely adjacent the ceiling of the room being served, with a long throw. Because of the appreciable thickness of the guide- vane body, it is possible to deflect the exiting air flows of a plurality of mutually adjacent air ventilation devices, or airterminal devices, in one and the same direction, close to the ceiling of the room being served.
  • the side members are subtantially planar and have base surfaces which are inclined to the outlet openings. These angularly positioned base surfaces cooperate with the body section of the guide vane in a manner to produce the flow conditions which determine the direction in which the stream of ventilation air travels.
  • the invention makes use of the interior of the hollow body of the vanes for accomodating a journal shaft, which directly or indirectly exerts a friction force on the vanes and holds them in any desired position without requiring any costly further devices.
  • the vane body lends not only its hollow interior as an inventive element, but offers simultaneously a useful exterior in that the setting means is part of same and is furthermore accessible through the associated opening for manual adjustment anywhere throughout the entire length of the vane.
  • Thee are no special openings to be provided, there are no protruding means and according to the preferred embodiment, there are not even special means required for providing the setting means, as this can be produced together with the vane in the same step of production.
  • This design is highly desirable also, because the integrated and "hidden" setting means does not invite to improper adjustments by laymen, as such adjustments preferably should be carried out by skilled people only, for not unballancing a ventilation system.
  • FIG 1 illustrates an air ventilation device, or air terminal device 10 connected to an air injection/extraction box 12.
  • the illustrating device comprises side profiled elements 14 and an inner profiled element 16 which embraces throughway or ventilation passages 18 having arranged therein air control and distributing devices 20 in the form of guide vane assemblies.
  • the devices or guide vane assemblies 20 are mounted in two end holders 22, each of which is provided with holding flanges 24 and abutment flanges 26 for abutment with the profiled elements 14, 16 and/or engagement in grooves 90, 98 provided in said flanges, and a journal shaft 28 upon which the device 20 is mounted for rotation.
  • the profiled elements are held together by cross struts 30, which pass through a hole 32 in the end holder means 22 and a corresponding hole 34 in the inner profiled element 16, said holes preferably being of non-round configuration.
  • the cross struts 30 are assembled with the aid of washers 36 and screws or bolts 38 arranged in screw holes 40 in the profiled side elements 14.
  • mounting fittings 42 and end covers 44 Arranged at the ends of the ventilation slots are mounting fittings 42 and end covers 44 having securing screws 46.
  • Perforated air-flow equalizing plates 48 or permanent baffles 49, ( Figure 6) may be arranged in that side of the air ventilation device 10 facing the air injection/extraction box 12.
  • Figure 2 illustrates the air ventilation device 10 from beneath.
  • the air control and distributing device 20 is provided with position setting means in the form of setting grooves 62 by means of which the setting of the device 20 can be adjusted, by rotating said device about the journal shafts 28 with the aid of a suitable tool herefor, or simply with the aid of the fingers and finger nails of one hand.
  • the figure also illustrates screws 64 for securing the device 20 to a fixed support, the necks of said screws passing into a respective slot 56 in a fixed angle fitting 66 covered with cellular plastic insulation.
  • the embodiment illustrated in Figure 2 also includes a lead bush 58 having an outwardly protruding portion over which a hose or pipe encapsulation can be fitted, said bush being intended to receive therethrough a selected pipe or line, for connecting supply and/or control devices, for example, to the air ventilation device 10.
  • FIG 3 illustrates the manner in which the air control and distributing device 20 is secured in a ventilation slot with the aid of the aforesaid end holder means 22.
  • the journal shaft 28 is mounted in an annular mounting part 27 connected to a web section 33 of the holder means 22, the aforementioned flanges 24, 26 extending from this web section 33. These flanges 24, 26 engage in the grooves 90, 98 provided in the profiled side elements 14 and the profiled inner elements 16.
  • the journal shaft 28 extends into a through-passing shaft bore 68 arranged in the air control and distributing device 20. Extending from the periphery of the bore 68 is a groove 70 in which there is arranged a tension spring 72. This tension spring is arranged to hold the device 20 in an adjusted position relative to the journal shaft 28, by means of friction.
  • a channel 74 or like cut-out extends from the groove 70 into a guide fin 76 arranged on the air control and distributing device 20.
  • Figure 4 illustrates a central holder means 60 which is very similar to the end holder means 22, but which is provided with a pivot pin 80 which projects outwardly in both directions.
  • the central holder means 60 supports on both sides the ends of the air control and distributing device 20 and is preferably used in conjunction with long ventilation slots 18, or when desiring to divide a slot longitudinally into an air injection and an air extraction part.
  • the tension spring 72 also in this case holds the device 20 in its adjusted position relative to the shaft journal 80.
  • each profiled element 14, 16 has a substantially planar web section which extends upwardly from a base part 82 and 106 respectively.
  • Figure 5 illustrates the left-hand side of a fully closed slot 128 between the edge 50 of the control and distributing device 20 and the side element 14, whereupon the total air flow passes out through the gap 54 between the device 20 and the inner profiled element 16.
  • the air flow strikes against the upper surface 130 of the base part 106 of the inner element 16 and is deflected to the left. Under the influence of the choanda effect, the air stream 134 will follow the wall surface or ceiling surface in which the air
  • FIG. 6 illustrates in the right-hand part thereof how the normally open ventilation slot can be closed by means of an angular baffle plate 140.
  • This baffle plate is arranged in a manner which enables it to be fitted through the ventilation slot 18 from outside the ventilation device without needing to dismantle the same. It is also possible to remove the plate, by inserting a tool between the plate 140 and the adjacent profiled element.
  • FIG. 1 In the left-hand part of the figure it is shown how the normally open ventilation slot can be closed fully by means of a planar baffle plate 49 inserted into an upper groove 102, 124 in respective profiled elements 14, 16. This planar plate 49 can only be removed by dismantling the ventilation device.
  • Planar baffle plates 49 are used solely to permanently shut-off the whole of the ventilation slot, or a part thereof, while angular baffle plates 140 are used for temporarily closing a ventilation slot, for example to satisfy changing ventilation requirements at different times of the year.
  • each guide vane assembly 20 includes a hollow body section 69 which extends along the whole of the length of said vane assembly and which has an appreciable thickness.
  • the cavity 68 is of substantially cylindrical configuration, to permit rotation of the guide vane relative to the shaft journals 28, 80, wherewith a groove 70 is provided for receiving the aforedescribed tension springs.
  • the reference 74 identifies a cut-out, while the reference 76 identifies a guide fin which forms part of the guide vane assembly in the ventilation device and which is directed away from associated opening 18.
  • the reference 50 identifies the outer edge of the guide fin, while the reference 62 identifies a groove for facilitating angular adjustment of the guide fin.
  • FIG 8 illustrates an air ventilation device 10 mounted on air injection extraction box 12 provided with a coupling sleeve 146.
  • the box 12 is provided with a connection collar 148, in which the device 10 is mounted.
  • the connection collar has a double-folded edge portion 150 which supports the end portions of legs 152 of an angular fitting 154.
  • the air ventilation device is secured by means of scress 156, which connect the mounting fittings 42 to the angular fitting 154.
  • the screws 156 have a length which enables them to secure the ventilation device at mutually different distances from the air injection/extraction box, depending upon the position of the wall or the ceiling on which the device is to be mounted.
  • Sealing strips 158 for example cellular plastic sealing strips, are arranged in the folds of the double-folded edges 150.
  • Figure 9 illustrates an air ventilation device or air terminal device in the form of a module comprising profiled elements 14, 16, and having four parallel slots or openings 18.
  • the air control and distributing devices 20 are adjusted to different positions, such that their free edges 50, when seen from the left of the figure, define a narrow gap 52, and a slightly wider gap 136, gaps 142 of substantially equal width, while the gap 128 on the extreme right is fully closed.
  • the directions in which the resultant air streams travel is indicated by arrows.
  • the left-hand ventilation gap creates an air stream 135 which follows along a ceiling or a wall 143 on which the ventilation device is mounted. The throw is comparatively short and the ventilation air stream reaches relatively far out from the surface 143.
  • the next following ventilation slot or opening creates an obliquely downwardly directed air stream, as indicated by the double arrows 138.
  • the third ventilation slot in which the air control and distributing device 20 is located in a central position, creates an air stream which passes vertically downwards, as indicated by the double arrows 144.
  • the right-hand ventilation gap or slot in which the edge 50 of the device 20 lies against the side element 14, produces a ventilation air stream which has a long throw and follows closely adjacent the surface 143, as illustrated by the arrow 134.
  • the gap 52 In order to accurately control the ventilation air stream, the gap 52 must be adjusted accurately to fractions of a millimeter. This can be effected advantageously by inserting a measuring instrument of some kind through the opening 18 and into the gap 52.
  • each guide vane 20 is cut out to form a recess 200 leaving a circumference of the hollow body 69 of slightly more than 180°, e.g. approximately 200°.
  • a journal shaft 204 which is constituted by a leaf spring 201.
  • the latter is preferably shaped as a pair of mirror-symmetrical claws, the openings of which are facing each other. These claws extend from a neck part 203, which in its turn connects to a common sling-like base 202.
  • a journal shaft i.e.
  • said pair of claws or the like is intended to become elastically compressed, when said recessed vane end is snapped on and over it, when it eventually expands somewhat inside said hollow body part and exerts a certain friction power on said vane, which in such a way is kept safely in position and yet can be easily removed again by withdrawal.
  • any pointed tool may be used for insertion into one of said holes or the like to adjust the position of a vane.
  • vanes according to the present invention must not necessarily be made of extruded aluminium. They may very well be formed of sheet metal, one end of which may form the tip of said fin, meanwhile the other end is bent around the first-mentioned one. This has proved to be a very stiff and inexpensive construction.

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)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Compressor (AREA)
  • Ventilation (AREA)
  • Materials For Medical Uses (AREA)
  • Duct Arrangements (AREA)
EP84113879A 1983-11-21 1984-11-16 An air ventilation device Expired EP0142834B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84113879T ATE45028T1 (de) 1983-11-21 1984-11-16 Belueftungsvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8306405A SE8306405L (sv) 1983-11-21 1983-11-21 Spaltventilationsanordning
SE8306405 1983-11-21

Publications (3)

Publication Number Publication Date
EP0142834A2 EP0142834A2 (en) 1985-05-29
EP0142834A3 EP0142834A3 (en) 1986-03-05
EP0142834B1 true EP0142834B1 (en) 1989-07-26

Family

ID=20353404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84113879A Expired EP0142834B1 (en) 1983-11-21 1984-11-16 An air ventilation device

Country Status (6)

Country Link
EP (1) EP0142834B1 (sv)
AT (1) ATE45028T1 (sv)
DE (1) DE3479151D1 (sv)
DK (1) DK551184A (sv)
FI (1) FI74535C (sv)
SE (1) SE8306405L (sv)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5001967A (en) * 1988-10-17 1991-03-26 Hungerford John W Modular air bar
IT1311218B1 (it) * 1999-04-12 2002-03-04 Airplast S A S Di Canzian L & Diffusore d'aria di tipo lineare
ES2288047B1 (es) * 2003-05-14 2008-11-01 Schako Metallwarenfabrik Ferdinand Schad Kg Difusor rectangular para aire acondicionado.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3308744A (en) * 1964-12-07 1967-03-14 Barber Colman Co Strip type air distributor
CH501850A (de) * 1970-04-27 1971-01-15 Ventilator Ag Gelenkvorrichtung mit zwei Gelenken und Verwendung derselben
DE2338940A1 (de) * 1973-08-01 1975-02-13 Ballmann Gmbh Lueftungsprofil
DE2413302C2 (de) * 1974-03-20 1982-12-23 Wildeboer, Werner, 2952 Weener Mengeneinstellvorrichtung für einen linearen Schlitzauslaß für Lüftungs- und/oder Klimaanlagen
DE2551078A1 (de) * 1975-11-13 1977-05-18 Werner Paul Luftauslass-vorrichtung fuer raumklimatisierungs- und belueftungsanlagen

Also Published As

Publication number Publication date
SE8306405L (sv) 1985-05-22
FI74535C (sv) 1988-02-08
ATE45028T1 (de) 1989-08-15
FI844554A0 (fi) 1984-11-20
SE8306405D0 (sv) 1983-11-21
DK551184D0 (da) 1984-11-20
DK551184A (da) 1985-05-22
DE3479151D1 (en) 1989-08-31
FI74535B (fi) 1987-10-30
EP0142834A3 (en) 1986-03-05
EP0142834A2 (en) 1985-05-29
FI844554L (fi) 1985-05-22

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