EP1241414A1 - Luftleitung und Verfahren zu ihrer Herstellung - Google Patents

Luftleitung und Verfahren zu ihrer Herstellung Download PDF

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Publication number
EP1241414A1
EP1241414A1 EP02075909A EP02075909A EP1241414A1 EP 1241414 A1 EP1241414 A1 EP 1241414A1 EP 02075909 A EP02075909 A EP 02075909A EP 02075909 A EP02075909 A EP 02075909A EP 1241414 A1 EP1241414 A1 EP 1241414A1
Authority
EP
European Patent Office
Prior art keywords
air duct
plastic
duct element
mould
elements
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.)
Withdrawn
Application number
EP02075909A
Other languages
English (en)
French (fr)
Inventor
Arend Willem Lohuia
Fernando Vazquez
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.)
LoVa Techniek VoF
Original Assignee
LoVa Techniek VoF
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 LoVa Techniek VoF filed Critical LoVa Techniek VoF
Publication of EP1241414A1 publication Critical patent/EP1241414A1/de
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to air duct elements which are used among other things for air transport inside buildings.
  • Metal has the further drawback that, if the temperature difference between the air on the outside and on the inside of the duct increases, condensation occurs on the walls of the air duct elements. In order to prevent this an insulation layer is normally arranged around the air duct element.
  • Plastic has the further advantage that random shapes can readily be made therewith, such as bends, connecting parts and so on.
  • the plastic of an air duct element according to the invention preferably comprises at least one of polyethylene, polyvinyl chloride, hard polyvinyl chloride and polypropylene.
  • a foaming agent is optionally added to the plastic, so that an element can be formed with a foamed core.
  • Such an element has a higher insulating value and is stronger at the same weight.
  • an air duct element in a preferred embodiment of an air duct element according to the invention a colouring agent is added to the plastic.
  • the air duct can hereby already be given the desired colour during production, so that it no longer requires painting.
  • an air duct element in another embodiment of an air duct element according to the invention the element is tubular and suspension means are formed on the outer side. Since the air duct element is made from a plastic, the arranging of suspension means, such as a lip with an opening arranged therein formed on the outer wall of the element, is very simple.
  • an air duct element according to the invention to add a fire-retarding agent to the plastic. This ensures that in the case of fire the air duct elements will not catch fire, whereby a fire safety is obtained similar to that of steel air duct elements.
  • the air duct element is manufactured by means of rotation moulding.
  • the advantage hereof is that air duct elements of differing shape can be made in simple manner. T-pieces, connecting pieces with angled branches and bends for instance can thus be manufactured by means of this method. Rotation moulding moreover always results in fully closed hollow bodies, so that unused branches remain sealed in fully airtight manner. Only the connections which are required are opened and used for connection to other air duct elements.
  • the invention further relates to a method for manufacturing an air duct element according to the invention, which method comprises the steps of:
  • the method herein comprises the further step of opening connecting parts of the manufactured air duct element as desired.
  • Figure 1 shows in perspective view the ceiling of a space on which is arranged an air duct system with air duct elements according to the invention.
  • Figures 2A and 2B show an embodiment of an air duct element according to the invention at two different stages of manufacture.
  • Figure 3 shows the air duct system according to figure 1 as seen from above with partly cut-away parts.
  • Figure 4 shows a second embodiment of air duct elements according to the invention.
  • FIG. 1 shows the ceiling 1 of a space. Suspended from this ceiling 1 is an air duct system 2 consisting of air duct elements 3, 4, 5 and 6 according to the invention. Air duct elements 3, 4 and 5 form a central transport conduit, while on elements 4 and 5 there are arranged branches onto which connect duct elements 6 which serve for supply or discharge of air to or from the space. The air duct elements are suspended from the ceiling by means of threaded rods 7.
  • FIG. 2A shows an air duct element 8 as it comes from the mould immediately after for instance rotation moulding.
  • all connecting parts 9 are closed by a plastic surface. This is the result of the rotation moulding.
  • the advantage of this closure is that only the required connecting parts 9 can be opened for connection of other air duct elements. An unused connecting part can thus remain closed, whereby it is sealed in completely airtight manner and no losses can occur.
  • Figure 2B shows element 8, wherein connecting parts 9 are opened, for instance to enable use as the air duct element 5 in air duct system 2 according to figure 1.
  • Two of the three connecting parts 9 are provided with a flared portion 10 so that another air duct element can be inserted therein in simple manner.
  • FIG 3 the air duct system 2 according to figure 1 is shown in top view.
  • fixing means 11 consisting of the two protruding lips with an opening therein.
  • the outer end of a threaded rod 7 can be placed in these fixing means 11 and fastened by means of a bolt 12.
  • FIG 3 further shows the connection of air duct element 4 to air duct element 5.
  • Air duct element 5 has a flared portion 10 into which the end of air duct element 4 is inserted.
  • a sealing ring 14 such as for instance an O-ring, is further arranged in flared portion 10.
  • Air duct element 6 comprises a bend part on which an extractor 13 is arranged. Since air duct elements 3, 4, 5 and 6 are manufactured from plastic and are preferably manufactured by means of rotation moulding, the shown elements can be manufactured in one mould by means of one rotation moulding step. The advantage is that, as for instance in the case of air duct element 6, this can be formed integrally, whereby there is less risk in respect of leakage losses. If an air duct element 6 were embodied as according to the prior art, this air duct element 6 would consist of a tube part, a bend part and an extractor part, which would each have to be connected to each other separately and where leakage losses could occur at each connection.
  • Figure 4 shows a second embodiment of a duct system 15 which consists of two air duct elements 16, 17, each having a rectangular cross-section and an air duct element 6 connected thereto.
  • the mutually abutting ends of air duct elements 16, 17 each comprise a thickened portion 18 between which a sealing ring can be arranged.
  • a bracket can then be placed on these thickened portions 18 so as to thus form a fastening.
  • connections using sealing rings are shown in the preferred embodiments. It is however also possible to weld or glue these connections.
  • Dampers can further be arranged on the air duct elements, which dampers take a manually adjustable form. These dampers serve to fine-tune an air duct system.
  • the valve plate of such a damper is preferably manufactured from the same plastic as the air duct elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)
  • Air-Flow Control Members (AREA)
EP02075909A 2001-03-15 2002-03-08 Luftleitung und Verfahren zu ihrer Herstellung Withdrawn EP1241414A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1017617 2001-03-15
NL1017617A NL1017617C2 (nl) 2001-03-15 2001-03-15 Luchtkanaalelementen en werkwijze voor de vervaardiging daarvan.

Publications (1)

Publication Number Publication Date
EP1241414A1 true EP1241414A1 (de) 2002-09-18

Family

ID=19773081

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02075909A Withdrawn EP1241414A1 (de) 2001-03-15 2002-03-08 Luftleitung und Verfahren zu ihrer Herstellung

Country Status (2)

Country Link
EP (1) EP1241414A1 (de)
NL (1) NL1017617C2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003025472A1 (en) * 2001-09-20 2003-03-27 Jungers Jon W Air handling system ductwork component and method of manufacture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1020863C2 (nl) * 2002-06-14 2003-12-17 Ubbink Nederland Bv Ventilatiesysteem.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5095942A (en) * 1990-02-14 1992-03-17 Murphy Gerard C Plastic self-insulating ductwork system
JPH0814638A (ja) * 1994-06-27 1996-01-19 Arai Jitsugyo Kk フレキシブルダクト
JPH08159378A (ja) * 1994-12-12 1996-06-21 Sekisui Chem Co Ltd 空気流通管
GR1002959B (el) * 1997-01-10 1998-09-01 Πλαστικος αγωγος αεροθερμανσης
US6117005A (en) * 1998-12-03 2000-09-12 Weiss; Peter T. Air conditioning extender system
US6196597B1 (en) * 1999-02-16 2001-03-06 James A. Karnes Heating duct

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3824460A1 (de) * 1988-07-19 1989-07-20 Johannes Seidel Verfahren und vorrichtung zur klimatisierung und zur ver- und entsorgung von raeumen, vorzugsweise von gewaechshaeusern und foliezelten

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5095942A (en) * 1990-02-14 1992-03-17 Murphy Gerard C Plastic self-insulating ductwork system
JPH0814638A (ja) * 1994-06-27 1996-01-19 Arai Jitsugyo Kk フレキシブルダクト
JPH08159378A (ja) * 1994-12-12 1996-06-21 Sekisui Chem Co Ltd 空気流通管
GR1002959B (el) * 1997-01-10 1998-09-01 Πλαστικος αγωγος αεροθερμανσης
US6117005A (en) * 1998-12-03 2000-09-12 Weiss; Peter T. Air conditioning extender system
US6196597B1 (en) * 1999-02-16 2001-03-06 James A. Karnes Heating duct

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 05 31 May 1996 (1996-05-31) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 10 31 October 1996 (1996-10-31) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003025472A1 (en) * 2001-09-20 2003-03-27 Jungers Jon W Air handling system ductwork component and method of manufacture

Also Published As

Publication number Publication date
NL1017617A1 (nl) 2001-12-12
NL1017617C2 (nl) 2002-01-24

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