EP0967443A2 - Luftkühlungsanordnung eines Raumes - Google Patents

Luftkühlungsanordnung eines Raumes Download PDF

Info

Publication number
EP0967443A2
EP0967443A2 EP99850110A EP99850110A EP0967443A2 EP 0967443 A2 EP0967443 A2 EP 0967443A2 EP 99850110 A EP99850110 A EP 99850110A EP 99850110 A EP99850110 A EP 99850110A EP 0967443 A2 EP0967443 A2 EP 0967443A2
Authority
EP
European Patent Office
Prior art keywords
air
primary air
mixing chamber
space
room air
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
EP99850110A
Other languages
English (en)
French (fr)
Other versions
EP0967443B1 (de
EP0967443A3 (de
Inventor
Staffan Biörklund
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.)
Stifab Farex AB
Original Assignee
Stifab Farex 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 Stifab Farex AB filed Critical Stifab Farex AB
Publication of EP0967443A2 publication Critical patent/EP0967443A2/de
Publication of EP0967443A3 publication Critical patent/EP0967443A3/de
Application granted granted Critical
Publication of EP0967443B1 publication Critical patent/EP0967443B1/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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/01—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station in which secondary air is induced by injector action of the primary air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/14—Details or features not otherwise provided for mounted on the ceiling

Definitions

  • the invention relates to a ceiling-mounted device for cooling room air which includes a longitudinal primary air duct, a room air cooling battery, a mixing chamber for cooled room air and primary air, and means for delivering primary air to the mixing chamber through the medium of an induction effect by means of which room air is sucked into the device and is passed through the cooling battery to the mixing chamber.
  • the device also includes one or more outlet ducts through which a mixture of cold room air and the primary air leave the device.
  • Cooling baffles Devices of the aforesaid kind are also referred to as cooling baffles or false ceiling panels. Such devices are known for treating room air and are available in different designs, including designs in which natural ventilation generated by a chimney effect is used instead of primary air, although a common feature of those cooling baffles that use primary air of the aforesaid kind is that they include one or more primary air channels to which primary air can be delivered through a central air-conditioning plant installed either in the building concerned or in the proximity of said building, or which is sucked-in from outside by fans provided to this end, so that the pressure in the primary air channel will always be higher than atmospheric pressure. The primary air is blown into the baffle interior through such devices as nozzles for instance, and the influence of said pressure.
  • cooling baffles are lean in energy and do not generate draughts. The level of noise generated is also relatively low.
  • An object of the present invention is to provide a room air cooling device of the cooling baffle type that uses induction with the aid of a primary air supply, so as to obtain a lower noise level or, alternatively, a higher capacity without raising the sound level.
  • the invention is characterised to this end by the features set forth in the accompanying Claims.
  • the primary air channel of the inventive device is divided into two spaces separated by a longitudinally extending air-permeable partition wall, wherein the first space, which receives primary air from an outer source, is delimited with respective flow from the second space which forms that part of the primary air channel in which said primary air supply means is arranged adjacent the partition wall or walls delimiting the mixing chamber.
  • the kinetic energy of the primary air in the first space is propagated only partially and generally only vertically to the second space, although the static air pressure in the primary air channel will, of course, be able to adjust equally in the whole of the primary air channel despite the presence of the partition wall, which can be designed in several different ways to provide such an effect and which may consist of different types of permeable membranes made of fabric, plastic or like materials, although metal is perhaps the simplest material from the aspect of construction and also the most hygienic.
  • the air permeable partition wall may thus conveniently have the form of a perforated plate with a perforated area of about 50%.
  • the partition wall or walls between the second space and the mixing chamber may suitably be disposed generally transversely to the flow direction in the adjacent outlet channel.
  • the inventive device may have many different configurations within the scope of the Claims and cooling baffles and like induction apparatus of the aforementioned kind forming part of the known art may, in many cases, include a divided primary air channel.
  • a particularly preferred embodiment of the device is one in which the part of the device that lies outside the first primary air channel space has a triangular cross-sectional shape, wherein the second primary air channel space forms the upper part of the triangle, the mixing chamber forms the centre-most part of the triangle, and the cooling coil and its surrounding air outlet channels connected to the mixing chamber forms the lower part of the triangle.
  • the triangle is preferably an isosceles triangle having an upper obtuse angle, such that the height of this part will be smaller than its width.
  • the second primary air channel space is suitably delimited by five walls, of which one is horizontal and forms a lower air-impermeable delimiting wall of the mixing chamber, of which two are said partition walls facing towards the mixing chamber, and of which two are said partition walls facing towards the first primary air channel space.
  • the lower delimiting wall will conveniently be removable, so as to facilitate cleaning of the second primary air channel space.
  • inventive cooling baffles When comparing inventive cooling baffles with earlier known versions of cooling baffles, it was noted that the sound level generated with the inventive baffles was up to 20% lower than the dBA values generated with the known baffles. However, this can only be seen as an indication to the effect that the inventive baffle generates lower sound levels, since known cooling baffles can generate different sound levels and since the sound levels generated by some older designs may be substantially greater.
  • the cooling baffle 10 includes a primary air channel having a first space 11 to which primary air 12 is delivered from an external source (not shown).
  • the baffle 10 also includes an outer casing 13, which delimits the primary air channel outwards, and inner walls 14 which delimit the primary air channel against the remainder of the baffle, which comprises a lower part 15 having a lower plate 16 which forms an outer, lower delimiting wall 17 of the lower part 15 and two outlet channel walls 18, and which together with an upper plate 19 also forms an upper delimiting wall of the lower part 15, said plates preferably being removable.
  • the lower part 15 accommodates one or more cooling coils 20 mounted in a coil holder 21 and functioning to cool room air that flows in through openings (not shown) in the lower wall 17.
  • the mixing chamber 23 is disposed above the lower part 15 and is delimited downwards by the upper plate 19 of the lower part 15, on one side of parts of the inner walls 14 that delimit the space 11, and delimited upwards by a lower air-impermeable delimiting wall 24 of the second space 25 of the primary air channel.
  • the second primary air channel space 25 has a pentahedral/?/ cross-sectional shape and is separated from the first primary air channel space 11 by an air-permeable partition wall 26, normally comprised of perforated sheet metal and, in the illustrated case, bent to form an obtuse angle at its upper ridge-like part 27.
  • the space 25 is also delimited by two obliquely extending partition walls 28 which border on the mixing chamber 23 and define generally a right angle with the partition walls 26 and the inner walls 14 extending parallel with said partition walls.
  • Provided in each partition wall 28 in the longitudinal direction of the device 10 are mutually spaced nozzles 29 through which primary air is blown from the primary air channel into the mixing chamber 23.
  • the cooling baffle shall be used as a 1-way baffle, the nozzles 29 shown in the higher rows may be blocked or removed and the holes plugged.
  • a screening plate 30, shown in a broken line, may also be fitted in this case.
  • the overpressure in the primary air channels 11, 25 will cause primary air 12 to be blown in through the nozzles 29, so as to form a subpressure in the mixing chamber 23.
  • This subpressure contributes towards sucking room air into the baffle (through induction) as illustrated by the upwardly pointing arrows, and up through the cooling coil 20 and into the mixing chamber 23.
  • the primary air blown into the device transports the room air sucked in by induction down through the outlet channels 22 and out along the ceiling of the room, as indicated by arrows.
  • the primary air delivered to and flowing through the first space 11 of the primary air channel flows through the holes in the air-permeable partition wall 26 and moves into the second primary air channel space 25 essentially from above and downwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)
  • Sorption Type Refrigeration Machines (AREA)
EP19990850110 1998-06-23 1999-06-22 Luftkühlungsanordnung eines Raumes Expired - Lifetime EP0967443B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9802215 1998-06-23
SE9802215A SE521038C2 (sv) 1998-06-23 1998-06-23 Takmonterad anordning för kylning av rumsluft samt tillförsel av tilluft

Publications (3)

Publication Number Publication Date
EP0967443A2 true EP0967443A2 (de) 1999-12-29
EP0967443A3 EP0967443A3 (de) 2000-09-27
EP0967443B1 EP0967443B1 (de) 2003-10-15

Family

ID=20411793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990850110 Expired - Lifetime EP0967443B1 (de) 1998-06-23 1999-06-22 Luftkühlungsanordnung eines Raumes

Country Status (4)

Country Link
EP (1) EP0967443B1 (de)
DE (1) DE69912030T2 (de)
NO (1) NO318402B1 (de)
SE (1) SE521038C2 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000028263A1 (en) * 1998-11-05 2000-05-18 Teknoterm Climate Ab Airconditioning device
FR2807501A1 (fr) * 2000-04-06 2001-10-12 Halton Oy Systeme d'amenee d'air dans une piece d'un batiment
EP1188992A3 (de) * 2000-09-13 2002-04-24 ABB Fläkt AB Luftbehandlung und Belüftungsvorrichtung
GB2371357A (en) * 2000-11-24 2002-07-24 Halton Oy An air conditioner terminal device with air mixing control for a room
GB2371853A (en) * 2000-12-07 2002-08-07 Halton Oy An air conditioner unit for a room with angled nozzles.
EP1319902A1 (de) 2001-12-07 2003-06-18 Fläkt Woods AB Heizeinrichtung zur Deckenmontage
US6715538B2 (en) 2000-11-24 2004-04-06 Halton Oy Supply air terminal device
EP1637815A1 (de) * 2004-06-10 2006-03-22 Lindab AB Belüftungsvorrichtung
GB2491039A (en) * 2011-05-20 2012-11-21 Frenger Systems Ltd Induction type air conditioner having a primary air chamber body and a separate discharge member coupled thereto
IT201800003335A1 (it) * 2018-03-07 2019-09-07 Aermec Spa Unita' di condizionamento dell'aria per interni
NO20181398A1 (no) * 2018-10-31 2020-05-01 Trox Auranor Norge As Kjølebaffel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE532506C2 (sv) 2008-03-31 2010-02-09 Lindab Ab Förfarande och anordning för ventilering av ett utrymme

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1011742A (en) 1961-10-03 1965-12-01 Carrier Corp Improvements in or relating to an induction type room air conditioning unit
GB1274540A (en) 1969-11-14 1972-05-17 Hendrik Jacobus Spoormaker Improvements in air conditioning and in air conditioning terminal units therefor
GB1468754A (en) 1973-06-02 1977-03-30 Ltg Lufttechnische Gmbh Air conditioning apparatus
DE3321612A1 (de) 1983-06-15 1984-12-20 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Klimageraet
GB2271175A (en) 1992-09-25 1994-04-06 Halton Oy Space air heating or cooling device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824909A (en) * 1970-04-08 1974-07-23 Cgt Corp Distribution system for clean rooms
SE460923B (sv) * 1987-04-16 1989-12-04 Farex As Straalnings- och konvektionselement foer undertaksmontage
US5725427A (en) * 1996-01-24 1998-03-10 Chemfab Corporation Fabric air diffuser, method for diffusing air, and method for attenuating noise associated with flowing air
SE516349C2 (sv) * 1996-08-26 2001-12-17 Stifab Farex Ab Anordning för kylning av rumsluft

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1011742A (en) 1961-10-03 1965-12-01 Carrier Corp Improvements in or relating to an induction type room air conditioning unit
GB1274540A (en) 1969-11-14 1972-05-17 Hendrik Jacobus Spoormaker Improvements in air conditioning and in air conditioning terminal units therefor
GB1468754A (en) 1973-06-02 1977-03-30 Ltg Lufttechnische Gmbh Air conditioning apparatus
DE3321612A1 (de) 1983-06-15 1984-12-20 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Klimageraet
GB2271175A (en) 1992-09-25 1994-04-06 Halton Oy Space air heating or cooling device

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6520247B2 (en) 1998-11-05 2003-02-18 Teknoterm Climate Ab Airconditioning device
WO2000028263A1 (en) * 1998-11-05 2000-05-18 Teknoterm Climate Ab Airconditioning device
FR2807501A1 (fr) * 2000-04-06 2001-10-12 Halton Oy Systeme d'amenee d'air dans une piece d'un batiment
BE1014102A3 (fr) * 2000-04-06 2003-04-01 Halton Oy Systeme d'amenee d'air.
EP1188992A3 (de) * 2000-09-13 2002-04-24 ABB Fläkt AB Luftbehandlung und Belüftungsvorrichtung
GB2371357B (en) * 2000-11-24 2004-11-24 Halton Oy Supply air terminal device
GB2371357A (en) * 2000-11-24 2002-07-24 Halton Oy An air conditioner terminal device with air mixing control for a room
US7000688B2 (en) 2000-11-24 2006-02-21 Halton Oy Supply air terminal device
US6715538B2 (en) 2000-11-24 2004-04-06 Halton Oy Supply air terminal device
US6769477B2 (en) 2000-12-07 2004-08-03 Halton Oy Supply air terminal device
GB2371853A (en) * 2000-12-07 2002-08-07 Halton Oy An air conditioner unit for a room with angled nozzles.
GB2371853B (en) * 2000-12-07 2005-04-27 Halton Oy Supply air terminal device
EP1319902A1 (de) 2001-12-07 2003-06-18 Fläkt Woods AB Heizeinrichtung zur Deckenmontage
EP1637815A1 (de) * 2004-06-10 2006-03-22 Lindab AB Belüftungsvorrichtung
GB2491039A (en) * 2011-05-20 2012-11-21 Frenger Systems Ltd Induction type air conditioner having a primary air chamber body and a separate discharge member coupled thereto
GB2491039B (en) * 2011-05-20 2017-02-01 Frenger Systems Ltd Improvements in or relating to air conditioning modules
IT201800003335A1 (it) * 2018-03-07 2019-09-07 Aermec Spa Unita' di condizionamento dell'aria per interni
EP3537056A1 (de) * 2018-03-07 2019-09-11 AERMEC S.p.A. Klimaanlageneinheit für innenräume
NO20181398A1 (no) * 2018-10-31 2020-05-01 Trox Auranor Norge As Kjølebaffel
NO345103B1 (no) * 2018-10-31 2020-09-28 Trox Auranor Norge As Kjølebaffel

Also Published As

Publication number Publication date
NO318402B1 (no) 2005-03-14
DE69912030T2 (de) 2004-07-22
NO993087L (no) 1999-12-27
SE521038C2 (sv) 2003-09-23
NO993087D0 (no) 1999-06-22
SE9802215L (sv) 1999-12-24
EP0967443B1 (de) 2003-10-15
DE69912030D1 (de) 2003-11-20
EP0967443A3 (de) 2000-09-27
SE9802215D0 (sv) 1998-06-23

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