EP2439456B1 - Air duct - Google Patents

Air duct Download PDF

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Publication number
EP2439456B1
EP2439456B1 EP11466027.7A EP11466027A EP2439456B1 EP 2439456 B1 EP2439456 B1 EP 2439456B1 EP 11466027 A EP11466027 A EP 11466027A EP 2439456 B1 EP2439456 B1 EP 2439456B1
Authority
EP
European Patent Office
Prior art keywords
duct
air
longitudinal
profile
walls
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.)
Active
Application number
EP11466027.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2439456A3 (en
EP2439456A2 (en
Inventor
Zdenek Prihoda
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.)
Prihoda sro
Original Assignee
Prihoda sro
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 Prihoda sro filed Critical Prihoda sro
Priority to SI201131989T priority Critical patent/SI2439456T1/sl
Priority to PL11466027T priority patent/PL2439456T3/pl
Publication of EP2439456A2 publication Critical patent/EP2439456A2/en
Publication of EP2439456A3 publication Critical patent/EP2439456A3/en
Application granted granted Critical
Publication of EP2439456B1 publication Critical patent/EP2439456B1/en
Priority to HRP20211138TT priority patent/HRP20211138T1/hr
Active 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0218—Flexible soft ducts, e.g. ducts made of permeable textiles
    • 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
    • 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
    • F24F13/0254—Ducting arrangements characterised by their mounting means, e.g. supports

Definitions

  • the invention relates to an air duct for transport, distribution, and suction of air, the duct being of a woven fabric.
  • ducts for transport or distribution of air made of a woven or non-woven fabric or foil, also called textile diffusers, are made of a material sewn so as to form enclosed shape having various cross-section forms. Often, it is circular but, generally, it includes a part of a circle or a combination of several such parts.
  • the ducting is perforated in a specific way and filled with air flow during operation, such that air is distributed through the perforation or passing through the fabric.
  • the ducting includes reinforcement means in order to maintain the required shape even without inflating it by the air flow, e.g. circular rings sewn inside the diffusers.
  • Their disadvantage is higher price and complicated assembly and disassembly.
  • An other option includes the use of multiple suspension means holding the upper part of the duct in the correct position. Such method is more expensive due to higher amount of installation material.
  • Another known solution has been described in the utility model No. CZ 17562 , wherein the centre of ducting cross section or region below or above the centre comprises a strut supporting the fabric and attached to the ducting in at least one place.
  • a disadvantage of the above air-conditioning ducting or textile diffusers is that they may be used solely for an air distribution or supply, not for any air suction or air exhaust.
  • any suction must be provided by means of a traditional ducting made from solid materials, usually metal.
  • Several problems are associated with the use of ducting made of a solid material, because solid ducting is difficult to clean, expensive, and heavy.
  • Known designs of fabric ducting cannot be used for a negative air pressure due, because it becomes deformed, so that its function is lost.
  • the duct may be pulled on a structure made of solid materials such as perforated sheet metal but then it looses the advantages of a fabric ducting, namely simple cleaning, light weight and cheap price.
  • WO0104547 discloses an air duct comprising a rigid plate forming two upper edges of the duct and two internal rods spaced apart by means of braces and forming lower edges of the duct.
  • walls of the duct form a tetragonal cross section, and the walls are at least with one upper corner fastened in a longitudinal upper bearing profile, and at the opposite side at least one lower corner of the duct is fixed in a longitudinal lower delimitation profile.
  • the upper and/or lower corner of the duct is reinforced to enable its external fixture in the longitudinal upper or lower profile.
  • the longitudinal lower delimitation profile, to which the lower corner of the duct walls is fastened is connected to the longitudinal upper bearing profile via fixed vertical spacing and connecting elements. At least two longitudinal upper bearing profiles form the upper bearing structure and two longitudinal profiles form the lower structure of air-conditioning ducting.
  • the air duct is adjusted in such way that its deformation resulting from any negative pressure or over-pressure is prevented.
  • the duct maintains its tetragonal cross section.
  • the upper part of the duct may be adapted to be fixed to the solid structure which is either suspended in the area or attached directly to the ceiling.
  • the lower part of the textile duct may be adapted to allow fixing or inserting a weight structure which holds the duct walls stretched even at negative pressure levels used in practise.
  • Such a ducting solution provides a very simple and well applicable way for maintaining the shape of the ducting. Air flow enters the ducting in a common way through the holes or through the fabric.
  • the main advantage of the invention is the possibility to extend the use of air-conditioning ducting and diffusers made of woven fabric to most of exhaust systems of low pressure air-conditioning or for producing tetragonal inlet fabric ducting, which was possible so far for ducts made of stiff materials only.
  • Fig. 1 shows an air duct having a rectangular cross section
  • Fig. 2 represents a cross section of the duct when out of operation
  • Fig. 2a shows the duct during operation in the suction mode
  • figure 2b shows the duct during operation in the supply mode.
  • Fig. 3 displays non-claimed_fabric suction diffuser having a triangular cross section
  • Fig. 4 represents a cross section through the duct when out of operation
  • Fig. 4a shows the duct during operation in the suction mode
  • figure 2b during operation in the supply mode.
  • the air duct for air transport or distribution is made from woven fabric having a hose shape having walls 2 forming a rectangular cross section ( Fig. 1 ).
  • Two upper wall corners 4 are fastened in two upper longitudinal bearing profiles 1, which are interconnected with each other by crosspieces and which form an upper bearing structure.
  • lower wall corners 5 of the duct are arranged in lower longitudinal delimitation profiles 3, which are connected with crosspieces and which form a lower delimitation structure.
  • the lower longitudinal delimitation profiles 3 are interconnected with the upper longitudinal bearing profiles 1 by means of fixed vertical delimitation connecting elements 6 in the areas of upper and lower cross-sections. The height of the vertical delimitation connecting elements 6 is adjusted as per the dimensions of the duct.
  • the upper corners 4 and the lower corners 5 are reinforced by means of a sleeve, which is inserted in the upper bearing profiles 1 and the lower delimitation profiles 3.
  • the sleeve may be further reinforced e.g. by means of bars.
  • the bearing structure made of upper bearing profiles 1 may be suspended in the area or attached to a ceiling like common ducts of this type.
  • the arrangement of the upper wall corners 4 is similar to the duct having rectangular cross section.
  • the remaining - the third - lower corner 5 is arranged in a lower longitudinal delimitation profile 3, which in this case forms a weight load for the duct and which is not fixed to the upper bearing profiles 1.
  • the new solution of air ducts provides another possible way of fixing the lower corners 5 to the lower delimitation profiles 3, namely that the lower longitudinal delimitation profile 3 is placed inside the lower corner 5 of the duct (not part of the invention).
  • the duct If the duct is out of operation, its walls 2 are more or less planar based on their stretching by means of the profiles ( Fig. 2 , 4 ) and the setting of the vertical delimitation connecting elements 6. In case of a suction mode, the walls 2 are concave during operation ( Fig. 2a , 4a ).
  • the duct may be used also for air distribution; in which case the walls 2 bulge outwards ( Fig. 2b , 4b ).
  • Air ducts according to the invention may be used in industry for air-conditioning systems installations, particularly in plants requiring higher quality of hygiene and air purity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Duct Arrangements (AREA)
  • Air-Flow Control Members (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Glass Compositions (AREA)
EP11466027.7A 2010-10-11 2011-10-07 Air duct Active EP2439456B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI201131989T SI2439456T1 (sl) 2010-10-11 2011-10-07 Zrakovod
PL11466027T PL2439456T3 (pl) 2010-10-11 2011-10-07 Kanał powietrza
HRP20211138TT HRP20211138T1 (hr) 2010-10-11 2021-07-16 Zračni kanal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ20100743A CZ2010743A3 (cs) 2010-10-11 2010-10-11 Vzduchotechnické potrubí

Publications (3)

Publication Number Publication Date
EP2439456A2 EP2439456A2 (en) 2012-04-11
EP2439456A3 EP2439456A3 (en) 2014-05-21
EP2439456B1 true EP2439456B1 (en) 2021-05-12

Family

ID=45315691

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11466027.7A Active EP2439456B1 (en) 2010-10-11 2011-10-07 Air duct

Country Status (10)

Country Link
EP (1) EP2439456B1 (lt)
CZ (1) CZ2010743A3 (lt)
DK (1) DK2439456T3 (lt)
ES (1) ES2881678T3 (lt)
HR (1) HRP20211138T1 (lt)
HU (1) HUE055653T2 (lt)
LT (1) LT2439456T (lt)
PL (1) PL2439456T3 (lt)
PT (1) PT2439456T (lt)
SI (1) SI2439456T1 (lt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ2017416A3 (cs) 2017-07-18 2018-09-26 Příhoda S.R.O. Výztužná sestava pro vzduchotechnické potrubí a vzduchotechnické potrubí

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077592A (en) * 1975-01-29 1978-03-07 George Alfred Forbes Supporting of ducting
JPH03110342A (ja) * 1989-09-20 1991-05-10 Mitsubishi Rayon Eng Co Ltd 気体吹き出しダクト

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB866949A (en) * 1958-08-30 1961-05-03 Baxter Woodhouse & Taylor Ltd Improvements relating to ducting or trunking for air or other gases
DE2802399A1 (de) * 1978-01-20 1979-07-26 Oldorid Kunstoffe Gmbh Flexible wetterlutte
JPH1163380A (ja) * 1997-08-22 1999-03-05 Kuraray Plast Kk 圧縮性ダクト
JPH11270894A (ja) * 1998-03-20 1999-10-05 Taisei Corp 通気ダクト
US6280320B1 (en) * 1999-07-13 2001-08-28 Rite-Hite Holding Corporation Frame to support a deflated fabric air duct
JP2007176316A (ja) * 2005-12-28 2007-07-12 Inoac Corp 自動車用ダクト及びその製造方法
CZ17562U1 (cs) 2007-04-18 2007-05-31 Príhoda@Zdenek Textilní vyústka

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077592A (en) * 1975-01-29 1978-03-07 George Alfred Forbes Supporting of ducting
JPH03110342A (ja) * 1989-09-20 1991-05-10 Mitsubishi Rayon Eng Co Ltd 気体吹き出しダクト

Also Published As

Publication number Publication date
HRP20211138T1 (hr) 2021-10-15
EP2439456A3 (en) 2014-05-21
PT2439456T (pt) 2021-07-27
HUE055653T2 (hu) 2021-12-28
DK2439456T3 (da) 2021-07-26
SI2439456T1 (sl) 2021-11-30
ES2881678T3 (es) 2021-11-30
CZ303235B6 (cs) 2012-06-06
PL2439456T3 (pl) 2021-11-22
EP2439456A2 (en) 2012-04-11
CZ2010743A3 (cs) 2012-06-06
LT2439456T (lt) 2021-08-25

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