EP1714090B1 - Supply air device - Google Patents

Supply air device Download PDF

Info

Publication number
EP1714090B1
EP1714090B1 EP05704790A EP05704790A EP1714090B1 EP 1714090 B1 EP1714090 B1 EP 1714090B1 EP 05704790 A EP05704790 A EP 05704790A EP 05704790 A EP05704790 A EP 05704790A EP 1714090 B1 EP1714090 B1 EP 1714090B1
Authority
EP
European Patent Office
Prior art keywords
duct
portions
lugs
along
nozzles
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.)
Not-in-force
Application number
EP05704790A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1714090A1 (en
Inventor
Göran Hultmark
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.)
Lindab AB
Original Assignee
Lindab 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 Lindab AB filed Critical Lindab AB
Publication of EP1714090A1 publication Critical patent/EP1714090A1/en
Application granted granted Critical
Publication of EP1714090B1 publication Critical patent/EP1714090B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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

  • Devices of the above type are frequent and normally used as cooling devices positioned in ceilings in, for example, offices.
  • the nozzles can be punched openings in a duct which is placed in a suitable position along the device to obtain induction. If the supply air flowing out of the nozzles is directed in a certain direction, air from the ventilated space will be drawn there since the static pressure will be lower there as the dynamic pressure increases.
  • the air from the ventilated space can be directed so as to pass a cooling unit/cooling-coil battery and thus be cooled.
  • these so-called cooling baffles are arranged in such a manner that the air flowing out of the cooling baffles flows along the ceiling due to induction which in this case is usually called the Coanda effect.
  • the object of the invention therefore is to provide a device in connection with supply air ventilation which solves the above problems and which besides allows greater freedom with regard to adjustment of the size of the opening areas of the openings.
  • contact portion to designate the area in the longitudinal direction along the duct portions which constitutes the contact area between two duct portions.
  • the position of the duct portions relative to each other defines the size of the openings.
  • the distance between the duct portions adjacent to a contact portion controls the size of the openings.
  • said duct portions are movably arranged relative to each other in such a manner that the duct portions are slidably arranged relative to each other adjacent to the contact portions.
  • the opening areas of the openings can be adjusted by only moving one duct portion relative to the other.
  • one of the duct portions comprises, adjacent to said contact portions, means arranged to define, in use, nozzles between the duct portions.
  • the distance between the duct portions adjacent to the contact portions can be adjusted and, hence, the opening areas of the nozzles.
  • the lateral edges of said lugs are, at least at the ends of the contact portion, arranged at an angle relative to the sides of the lugs in the centre of the contact portion for controlling the direction of air from the device. This means that it is possible to control the two-dimensional spreading of the supply air from the device.
  • the air flow from the device will, due to induction, collect to an air flow having a small cross-sectional area and, thus, a high air velocity, which if the worst comes to the worst may cause draught in the zone of residence, i.e. after the air has left the baffle.
  • the supply air spreads in several directions and will thus have a larger cross-sectional area and, hence, a lower air velocity, which reduces the risk of draught. It has been found particularly advantageous to have a device in which the sides of the lugs along the contact portion are fan-shaped for controlling the direction of air from the device. With this design, the air velocity is relatively even along the entire device.
  • An alternative to angling the lateral edges is to incline all lugs completely where it is desirable to have inclined lateral edges. The greatest advantage of this alternative is that the same type of lug can be used along the entire device.
  • At least one of the duct portions has corrugations at the nozzles for increased control of the direction of air from the device.
  • the nozzles In practice, it is hardly ever required that the nozzles be closed completely, and with corrugations slightly more rounded nozzles are obtained.
  • Such rounded nozzles thus have a slightly less angular cross-sectional area, which further promotes the reduction of losses in the conversion from static pressure to dynamic pressure.
  • fan shape is meant throughout the text that the angle is changed gradually along the contact portions.
  • At least one duct portion has cut-outs adjacent to the contact portions for increased control of the direction of air from the device.
  • semicircular portions are in this case punched from the edge of one of the duct portions in order to round the cross-section of the nozzles.
  • Such cut-outs can advantageously be asymmetric along the contact portions in order to, for example, additionally reinforce the control of the air direction from the device.
  • an element is movably arranged between said duct portions adjacent to the contact portions to allow adjustment of the size of said openings.
  • the duct portions are movable sideways relative to each other. In this manner, the size of the openings can be adjusted since the corrugations or cut-outs place themselves over the lugs when the duct portions are moved sideways relative to each other, thus reducing the opening area between the duct portions.
  • the device in Fig. 1 comprises two duct portions 1, 2 and two cooling-coil batteries 3, which are some of the parts included in a cooling baffle according to the present invention.
  • the upper duct portion 1 comprises lugs 4 along the duct portion 1.
  • Fig. 2a shows the parts from Fig. 1 in a partial cross-section when the duct portions 1, 2 are in a first position relative to each other, where the duct portions seal against each other adjacent to the contact portions, i.e. the opening areas of the nozzles are minimal.
  • Fig. 2b is an enlargement of the portion B in Fig. 2a .
  • the opening areas of the nozzles are the largest in the position shown in Fig. 3a when the lower duct portion 2 has been moved upwards.
  • Figs 4a and 4b show a part of the device from Figs 2 and 3 in perspective. It is evident from Fig. 4b how the air flows out of the nozzles.
  • Figs 5a and 5b show the same part of the device as in Figs 4a and 4b , with the difference that the lower duct portion 2 in this case adjacent to the contact portions has corrugations 5 between the lugs of the upper duct portion 1.
  • this helps to obtain a still smoother conversion from static pressure to dynamic pressure and, consequently, better utilisation of the pressure.
  • Another conceivable variant is to move one of the duct portions sideways, i.e. so that the corrugations 5 place themselves over the lugs 4, thus adjusting the air flow rate.
  • Figs 6 and 7 illustrate schematically the air velocity along a device according to the present invention depending on the configuration of the lugs.
  • all lugs are arranged in parallel, which often results in the air velocity varying along the device and, due to induction, being maximal in the centre since the indoor air helps to induce, as indicated by the arrows 14.
  • Figs 9a and 9b illustrate another alternative embodiment of the invention.
  • An element 6 is slidable along the contact portion between the duct portions 1, 2, Fig. 9a showing the element 6 in a lower position where air cannot leave.
  • Fig. 9b the element 6 is in an upper position where air can flow out between the lugs.
  • it is possible to adjust the size of the openings by arranging the element 6 in a position between the positions shown in Figs 9a and 9b .

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)
  • Compressor (AREA)
EP05704790A 2004-02-10 2005-02-03 Supply air device Not-in-force EP1714090B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0400300A SE527956C2 (sv) 2004-02-10 2004-02-10 Anordning vid tilluftsventilation innefattande långsträckt kanal med dysor
PCT/SE2005/000128 WO2005075897A1 (en) 2004-02-10 2005-02-03 Supply air device

Publications (2)

Publication Number Publication Date
EP1714090A1 EP1714090A1 (en) 2006-10-25
EP1714090B1 true EP1714090B1 (en) 2013-01-23

Family

ID=31885296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05704790A Not-in-force EP1714090B1 (en) 2004-02-10 2005-02-03 Supply air device

Country Status (4)

Country Link
EP (1) EP1714090B1 (sv)
RU (1) RU2375645C2 (sv)
SE (1) SE527956C2 (sv)
WO (1) WO2005075897A1 (sv)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2002015C (nl) * 2008-09-24 2010-03-25 Inteco B V Kruisstroom inductie plafondconvector.
SE535258C2 (sv) * 2010-10-29 2012-06-05 Lindab Ab Tilluftsdon

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE656647C (de) * 1935-02-19 1938-02-10 Masch Und Filterbau G M B H Vorrichtung zur Luftverteilung, insbesondere fuer Gaerkeller
DE931855C (de) * 1951-05-11 1955-08-18 Dyckerhoff & Widmann Ag Klimakanal fuer mit einer Schale ueberdachte Betriebsraeume
DE1105587B (de) * 1958-07-18 1961-04-27 Krantz H Fa Luftkanal fuer Lueftungsanlagen
DE3303987A1 (de) * 1983-02-05 1984-08-09 Emil Dipl.-Ing. Koch (FH), 7300 Esslingen Kanalsystem insbes. fuer lueftungs- und klimaanlagen
DE4007416C2 (de) * 1990-03-09 1994-08-18 Mueller E Gmbh & Co Schlitzförmiger Luftauslaß für eine raumlufttechnische Anlage
DE9400738U1 (de) * 1994-01-18 1994-03-10 H. Krantz-Tkt Gmbh, 51465 Bergisch Gladbach Konvektives Kühlelement
SE517998E5 (sv) 2000-09-13 2020-10-06 Flaektgroup Sweden Ab Ventilationsaggregat där tilluft medinducerar rumsluft, vilken passerar kylnings./ uppvärmningselement, och där utblåshål för tilluft har reglerbar area via förskjutbar reglerpanel
FI117682B (sv) * 2000-11-24 2007-01-15 Halton Oy Inloppsluftanordning
FI118236B (sv) * 2000-11-24 2007-08-31 Halton Oy Inloppsluftanordning
FI113798B (sv) * 2000-11-24 2004-06-15 Halton Oy Inloppsluftanordning
FI115793B (sv) * 2001-09-27 2005-07-15 Halton Oy Inloppsluftanordning

Also Published As

Publication number Publication date
WO2005075897A1 (en) 2005-08-18
EP1714090A1 (en) 2006-10-25
SE527956C2 (sv) 2006-07-18
SE0400300L (sv) 2005-08-11
RU2375645C2 (ru) 2009-12-10
SE0400300D0 (sv) 2004-02-10
RU2006132343A (ru) 2008-03-20

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