WO2006119586A1 - Air duct - Google Patents
Air duct Download PDFInfo
- Publication number
- WO2006119586A1 WO2006119586A1 PCT/AU2006/000776 AU2006000776W WO2006119586A1 WO 2006119586 A1 WO2006119586 A1 WO 2006119586A1 AU 2006000776 W AU2006000776 W AU 2006000776W WO 2006119586 A1 WO2006119586 A1 WO 2006119586A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- duct
- air duct
- moulded
- moulded air
- section
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/127—Rigid pipes of plastics with or without reinforcement the walls consisting of a single layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
- F16L11/125—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting non-inflammable or heat-resistant hoses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
-
- 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
- F24F13/0218—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
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/33—Responding to malfunctions or emergencies to fire, excessive heat or smoke
Definitions
- This invention concerns blow moulded products and methods for making the same.
- the apparatus aspect of this invention provides a moulded air duct of elongated section capable of installation in wall or ceiling space and containing an effective quantity of flame retardant.
- blow moulded ducts are preferred in that acceptable uniformity in wall thickness is achievable at lower cost.
- Wall thickness may be 2.00- 3.00mm.
- the ducts may have male/female joins at the ends of the ducts which will allow sealant to fill the clearance between the overlapping parts.
- Individual ducts may be 1000-1500mm in length, but 1200mm is preferable.
- the duct may have a male join at one end, a female join at the opposite end and one or more joint sites at predetermined spacings.
- the j oint site may be of enlarged section so that cutting the duct through the joint site generates a female join.
- the joint sites stiffen the duct. Further stiffening is made possible by the inclusion of tubular supports extending from opposite internal faces of the duct. These are created during the blow moulding operation.
- the sides of the duct may be curved, preferably semi-circular section.
- the ducts may be moulded from polyolefms such as polyethylene, preferably HDPE.
- Suitable flame retardants are that the flame retardants are halogenated aromatic flame retardants including tetrabromobisphenol A polycarbonate oligomer, polybromophenyl ether, brominated polystyrene, brominated BPA polyepoxide, brominated imides, brominated polycarbonate, poly (haloaryl acrylate), poly (haloaryl methacrylate), or mixtures thereof.
- Poly (haloaryl acrylate) is preferred with the most preferably being poly (pentabromobenzyl acrylate).
- PBB-PA has been known for some time and is a valuable flame retardant material useful in a number of synthetic resins.
- PBB-PA is prepared by the polymerisation of pentabromobenzyl acrylate ester (PBB-MA).
- PBB-MA pentabromobenzyl acrylate ester
- the PBB-PA polymeric flame retardant material is incorporated into the synthetic resin during processing to impart flame retardant characteristics. These are described in the literature. They are added to the moulded beads to make up 6-10% of the moulding mix.
- the ducts may be modified by moulding corner components which turn the flow path through 45° or 90°.
- the ducts may be joined to ducts of both substantially square section and round section by an adapter.
- a ducting system using the components described above permits the installation of a cooling distribution circuit in the ceiling with wall supplied outlets just above floor level, together with underfloor heating distribution circuit with wall supplied outlets at any desired height. Accordingly the ducts run up and down walls and across ceilings within the existing structure bringing cooling, heating and ventilation.
- the method aspect of this invention provides a method of making a duct of elongated section by blow moulding a parison to form a duct which is closed at both ends with a joint site at one end and at least one other joint site intermediate the ends and removing both ends to create a male join at one end and a female join at the opposite end.
- the method may include the step of connecting the internal faces of the duct with a tubular support in the central area of the duct.
- Figure 1 is a plan of a piece of duct.
- Figure 2 is an end view of the duct of Figure 1.
- Figure 3 is a 45° corner component in the same plane.
- Figure 4 is a perspective of a 90° corner in a different plane.
- Figure 5 is a perspective of an adapter.
- Figure 6 is a side view of a moulding before conversion to a duct.
- Figure 7 is a perspective of a specialised air duct containing a butterfly valve.
- Figure 8 is a section through part of a two storey building with in wall ducting.
- Figure 9 is a section through part of a single storey building with ducting in the roof space.
- Figure 10 is a section through part of a multi-storey apartment building with an air duct in the suspended ceiling space.
- Figure 11 is a plan of a department with air ducts exhausting the outside air through the ceiling space.
- the duct is 1200mm long, 335mm wide and 60mm deep.
- End 2 is square and constitutes a male join 4.
- End 6 is also square and is enlarged in section to form a female join 8.
- the intermediate female joins 10 are equally spaced along the length of the duct.
- the three areas between joins are each stiffened by the formation, during moulding, of a tubular post 12 which extends from wall 14 to opposite wall 16.
- the junction 18 between the wall and the post is radiussed to reduce drag. 8% of poly pentabromobenzyl acrylate ester is dispersed in the mix at the moulding stage.
- the comer component 20 turns the duct flow direction through 45° and can be used with a second component to achieve a 90° change.
- One end has a male join 4.
- the opposite end has a female join 8.
- an intermediate female join 10 and a post 12 import the necessary stiffness and shape to become part of a chain of duct work.
- a 90° bend component 22 is shown.
- the adapter 24 has a neck 26 which takes the cross section of the male join into a box-section spigot 28 (170 x 100mm).
- Figure 6 shows a side view of the moulded duct precursor from which the 1200mm duct is cut. The ends 30 are excised.
- a two storey dwelling has a suspended floor 32 and a ceiling fixed to ceiling joists 34.
- the timber frame 36 stands inside the outer brick veneer 38.
- the plasterboard lining is pierced to receive a duct outlet 40 which discharges air from duct run 42.
- Duct run 42 is turned through 90° by bend 22 and bend 22 is connected to adapter 24.
- Circular flexible pipe 44 is taped to the adapter. The opposite end of the pipe is taped to the outlet of a gas fuelled heater (not shown).
- the flattened section of the duct fits within the stud depth. Gaps in the floor plate allow the duct to reach the space under the floor.
- the space heater 46 warms the air in the room 48 which is to be transferred to room 50 through ceiling vents 52 joined by the duct run 42.
- the ends of the ducts open into adapters 24 and flexible pipes 44 join the adapters to fan box 54.
- the fan box is concealed in cupboard 56.
- FIG. 7 shows the valve component which forms part of the duct run for an extraction layout.
- the component is ' a blow moulding in polyethylene containing flame retardant as described above.
- the main tube 60 is 150mm in diameter and 440mm long.
- One end 62 is plain for the connection of flexible tubing and the opposite end 64 is enlarged and of capsule section being 135 x 220mm.
- Transverse branches 64 are of circular section and likewise of 150mm diameter.
- the air barrier in the main tube is a gravity biassed circular plastic disc 66 mounted 30mm off centre.
- the main tube has two sites 68 where the wall thickening of the tube is increased. Both sites have a central point of weakness which is broken through in order to admit the axle 70 of the disc.
- the manner of use of the valve component is shown in Figures 10 and 11.
- Room 50 has a suspended ceiling 72 with a vent 52.
- Fan box 54 is fixed to the ceiling slab 74 as is the duct run 42.
- the valve component 60 is connected between the fan box input and the vent with the valve disc disposed to close when the fan stops.
- valve component 66 utilises shaped end to connect to shower vent 52 via a, flexible tube 44 and branch 54 to connect a toilet vent 52.
- the components are easier to handle than metal components in that the formation of a chain is easier.
- the components have poor thermal conductivity and therefore improve the thermal efficiency of the system and reduce condensation.
- the finished duct work has better acoustic performance than metal duct work.
- the ducts fit between studs in a stud wall.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2006246325A AU2006246325C1 (en) | 2005-05-11 | 2006-05-11 | Air duct |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2005902379 | 2005-05-11 | ||
AU2005902379A AU2005902379A0 (en) | 2005-05-11 | Air duct |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006119586A1 true WO2006119586A1 (en) | 2006-11-16 |
Family
ID=37396118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2006/000776 WO2006119586A1 (en) | 2005-05-11 | 2006-05-11 | Air duct |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2006119586A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010541071A (en) * | 2007-09-28 | 2010-12-24 | イマージョン コーポレーション | Multi-touch device with dynamic haptic effect |
EP2639488A1 (en) * | 2012-03-13 | 2013-09-18 | Lindner Ag | Device for connecting cooling or heating registers to ceiling elements |
US11421908B2 (en) * | 2020-03-16 | 2022-08-23 | Fettkether Llc | Oval register boot, pipe, elbow, and connector for HVAC |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6196597B1 (en) * | 1999-02-16 | 2001-03-06 | James A. Karnes | Heating duct |
WO2004070252A1 (en) * | 2003-02-03 | 2004-08-19 | Uponor Innovation Ab | Plastic ventilation duct that has at least two layers and is made at least partially antistatic |
-
2006
- 2006-05-11 WO PCT/AU2006/000776 patent/WO2006119586A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6196597B1 (en) * | 1999-02-16 | 2001-03-06 | James A. Karnes | Heating duct |
WO2004070252A1 (en) * | 2003-02-03 | 2004-08-19 | Uponor Innovation Ab | Plastic ventilation duct that has at least two layers and is made at least partially antistatic |
Non-Patent Citations (1)
Title |
---|
"Polymer Science Dictionary", 1989, ELSEVIER SCIENCE PUBLISHERS LTD, LONDON, pages: 165, XP008073235 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010541071A (en) * | 2007-09-28 | 2010-12-24 | イマージョン コーポレーション | Multi-touch device with dynamic haptic effect |
EP2639488A1 (en) * | 2012-03-13 | 2013-09-18 | Lindner Ag | Device for connecting cooling or heating registers to ceiling elements |
US11421908B2 (en) * | 2020-03-16 | 2022-08-23 | Fettkether Llc | Oval register boot, pipe, elbow, and connector for HVAC |
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