EP2184556A1 - Luftsammelbox mit mehreren radial angeordneten Lufteinlässen und einem Luftauslass und ein Herstellungsverfahren für eine solche - Google Patents

Luftsammelbox mit mehreren radial angeordneten Lufteinlässen und einem Luftauslass und ein Herstellungsverfahren für eine solche Download PDF

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Publication number
EP2184556A1
EP2184556A1 EP09252172A EP09252172A EP2184556A1 EP 2184556 A1 EP2184556 A1 EP 2184556A1 EP 09252172 A EP09252172 A EP 09252172A EP 09252172 A EP09252172 A EP 09252172A EP 2184556 A1 EP2184556 A1 EP 2184556A1
Authority
EP
European Patent Office
Prior art keywords
hub unit
spigot
outlet
ventilation
ventilation hub
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Withdrawn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
EP09252172A
Other languages
English (en)
French (fr)
Inventor
Robert Weatherly
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.)
Applied Energy Products Ltd
Original Assignee
Applied Energy Products Ltd
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 Applied Energy Products Ltd filed Critical Applied Energy Products Ltd
Publication of EP2184556A1 publication Critical patent/EP2184556A1/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Withdrawn legal-status Critical Current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
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • 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
    • F24F13/0236—Ducting arrangements with ducts including air distributors, e.g. air collecting boxes with at least three openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F2007/001—Ventilation with exhausting air ducts
    • F24F2007/002—Junction box, e.g. for ducts from kitchen, toilet or bathroom

Definitions

  • This invention relates to extraction of air from buildings, in particular hubs for central ventilation systems for buildings.
  • Ventilator hubs where a number of conduits from different locations can come together, and which have a single conduit leading therefrom towards a vent.
  • Such hubs may be located for example in a suspended ceiling.
  • problems associated with current hubs One of the problems is that their geometry can cause unnecessary pressure drops within the system, thereby necessitating a more powerful impeller to provide the same extraction rate. This is largely because the air flow path within the hub is required to undergo a series of 90 degree turns which created these pressure drops.
  • a further problem is that the inlets are oriented parallel to one another, and parallel the output, all on one side of the hub unit.
  • conduits requiring an additional 90 degree turn to lead into or out of the unit, compounding the above mentioned problem, and increasing the overall vertical dimension of the hub.
  • Another problem with ventilation hubs is that they can be problematic to retrofit to existing ventilation systems as different systems and different legislative regimes require different sized ventilation ducts which may not match the ventilation hub.
  • a ventilation hub unit comprising a casing having a plurality of inlets and one outlet, wherein said plurality of inlets are arranged radially at the perimeter of said hub unit.
  • the inlets By arranging the inlets radially around the perimeter of the unit the overall depth of space needed for instalment can be reduced. This is especially beneficial for example where the unit is to be located above suspended ceilings.
  • the inlets when conduits are attached thereto, they naturally diverge radially outwardly from the hub, allowing them to lead to various locations in a minimum of depth. As the conduits naturally radiate in this manner, the conduit can be attached to the conduit without the need for any ninety degree bends associated with prior art units. This increases the efficiency of the hub by eliminating pressure reduction points.
  • the unit has a substantially round profile and preferably the outlet is a tangential outlet.
  • the unit comprises a first chamber, into which said inlets open, and a second chamber out of which said outlet exits.
  • the first chamber may comprise an axial outlet leading to the second chamber, and the axial outlet may have a radiused surface leading thereinto.
  • the upper interior surface of the first chamber comprises a central radial curved surface to direct airflow passing therethrough towards the axial outlet of the first chamber. In this manner the upper surface substantially mirrors the curved surface leading into the first chamber outlet, further reducing turbulence and minimising pressure drops within the hub unit.
  • an impeller is located in the second chamber.
  • the impeller moves air through the ventilation hub and expels it out of the outlet.
  • the unit comprises a plurality of spigot inserts, one such spigot insert associated with each inlet wherein each spigot insert comprises a first end for insertion into an inlet, and a second end for receiving, in use, a duct.
  • the plurality of spigot inserts may have second ends of differing diameter for receiving different sized duct.
  • the first end of each of the spigot inserts may be of a different cross sectional shape to the second end of each spigot inserts. This allows for great flexibility of the hub, as it can easily be adapted for use with different shaped or sized ducts. As the types of ducting, including both size and shape, vary geographically this flexibility allows the same hub unit to be easily and quickly adapted for any customer specific configuration.
  • the spigot insert further comprises a flow regulator, which may be self-governing.
  • the flow regulator comprises a flexible membrane that partially restricts the flow through the spigot insert and, in use, an increased flow flexes the membrane to further restrict flow through the membrane, thereby automatically regulating the flow.
  • the flow regulator may be manually adjustable to restrict the flow through the spigot insert.
  • the spigot insert has retaining feature for retaining a removable flow restrictor therein. The use of flow restrictors in the hub provides a central point for balancing the flow through the various ducts leading into the unit, which, in the absence of flow restrictors, is determined by a number of features including the length of duct and any bends in the duct.
  • flow restrictors By placing these flow restrictors in the spigot inserts, at the point of installation flow restrictors can be added or removed and adjusted, if manual, at a single location greatly facilitating the installation. This is a particularly beneficial feature when the unit is being retrofitted to replace a unit that is already part of an installed system.
  • the unit further comprising retaining means for retaining the spigot inserts within said inlets, which may be a screw.
  • the unit outlet has a larger cross sectional area than the unit inlets.
  • the cross sectional area of the hub outlet is equal or greater than the total of the cross sectional areas of the inlets.
  • the unit may comprise six radial inlets, which may have an angular spacing of less than 50 degrees.
  • the unit is substantially round in plan profile and has a maximum depth of 190mm.
  • the unit may be installed in a shallow space for example a domestic suspended ceiling.
  • a ventilation hub unit comprising:
  • the base, middle and cover sections are formed by moulding process having a single axis of tool separation.
  • moulding process having a single axis of tool separation.
  • the method further comprising the steps of moulding a plurality of spigot inserts having a first end and a second end; and inserting the first end of a spigot inserts into said inlet openings.
  • a flow regulator Prior to inserting the first end of the spigot insert into the inlet openings, a flow regulator may be inserted into said spigot insert.
  • Preferably method further comprising the step of fixing the spigot inserts in the inlets with screws.
  • a ventilation hub unit 10 having a casing 12 having a plurality of openings therein forming inlets 14 therein and an outlet 16.
  • Six inlets 14 are radially spaced around the exterior of the unit at approximately a forty-five degree angle of separation. In use the inlets 14 are connected to ducts that lead to ventilation points.
  • the hub unit 10 has an impeller 28 therein to draw air into the inlets 14, from the ducting, and expel the air from the outlet 16 that exits substantially tangentially to the hub unit.
  • the inlets 14 comprise spigot inserts18, inserted into the casing 12. In Figure 1 the inserts 18 are shown having equal sized inlet diameters and in Figure 2 the inserts 18 are shown having different sized inlet diameters.
  • the hub unit 10 can be easily configured for use with a ventilation system having anything up to six ducts of differing sizes, thus facilitating installation.
  • the inserts 18 are secured in place by using screws 20.
  • the casing 12 comprises three main sections, a base section 25, a middle section 24, and a top section 26. When assembled, an interior surface 22 of the base section 25 and the middle section 24 come together to form an impeller chamber in which the impeller 28 sits and rotates to draw air through the unit.
  • the middle section 24 has a central hole 30 therein which is centrally located and forms an outlet from a first chamber, formed between the middle section 24 and the top section 26, leading to the impeller chamber.
  • the surface 32 surrounding the central hole 30 is profiled such that its curve leads into the of the first chamber outlet 30 creating a smooth fluid flow path for the air passing through the hub unit 10 and thereby reduces pressure loss up due to unnecessary eddies within the unit.
  • the impeller 28 is driven by a motor which forms a central part of the impeller and about which the impeller 28 spins.
  • the three main parts of the hub unit 10, the base section 25, the middle section 24 and the top section 26 are all formed of plastics materials in a moulding process.
  • the three sections 24, 25, 26 are all designed in a manner that can be moulded by a simple up-and-down tool, i.e. the tool necessary to mould the parts separates in a single axis of movement.
  • inlets that receive the spigot inserts 18 are angled with respect the central axis of the unit about which they are radially spaced such that the inlet holes can be formed without the need of side action movement from a tool.
  • This design greatly reduces the complexity of the tool design needed to mould the part.
  • a detail view of a spigot insert 34 is shown.
  • the spigot insert has a reduced section 36 enabling a conduit of lesser diameter than the opening in the casing 12 to be easily attached to the unit.
  • a resilient flap regulator which comprises a flap 38 which is attached to the insert 34 so that it is maintained at an angle to the flow path without blocking the flow path.
  • the flap 38 is made of a resilient material so that as the flow increases through the spigot insert 34 fluid pressure on the surface of the flap 38 facing the direction of flow will cause the flap 38 to resiliently deform towards the unit thereby reducing the cross section of the spigot insert through which fluid can flow. In this manner the flow regulator is self-regulating.
  • a small wall feature 40 within the spigot insert 34 prevents the flap 38 from deforming past perpendicular to the fluid flow. Without any flow regulators the upstream fluid resistance would dictate the fluid flow, drawn through each of the inlets of the hub unit. This can result in ventilation points in rooms further from the hub unit having reduced ventilation due to reduced flow. By flow regulating in the manner above, the same flow is achieved through the various inlets to the hub unit which can be used to help balance the ventilation flow form the various ventilation points.
  • a spigot insert 42 having an equal diameter to the openings in the casing 12 that it is intended to go.
  • the spigot insert 42 has an internal feature 44 moulded into its interior surface which can receive a removable flow regulator comprising an axis 48 and two flaps 50.
  • a removable flow regulator comprising an axis 48 and two flaps 50.
  • a adjuster 52 is located on the axis 48 that adjusts the resistance to the deflection of the flaps 50. This is achieved by means of a rotating support (not shown) behind the flaps 50, which prevents the deflection of the flaps 50 to a greater or lesser extent depending on its rotational position.
  • Minimum resistance is provided when the support is parallel with the axis 48 and maximum resistance is given when the support is perpendicular to the axis 48.
  • a manual flow regulator the balance of flow through individual spigot inserts can be manually adjusted to balance the system from a single location point. Often a system will have one high volume extraction, for example from above a cooker, and a number of smaller volume extractions from bathrooms or toilets.
  • a unit may have a manual flow regulator on all the inlets or may just have a manual flow regulator on the high volume inlet and either no regulation, or self regulating flow regulators, on the smaller volume inlets.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP09252172A 2008-11-11 2009-09-12 Luftsammelbox mit mehreren radial angeordneten Lufteinlässen und einem Luftauslass und ein Herstellungsverfahren für eine solche Withdrawn EP2184556A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0820558.5A GB2465197B (en) 2008-11-11 2008-11-11 Ventilation

Publications (1)

Publication Number Publication Date
EP2184556A1 true EP2184556A1 (de) 2010-05-12

Family

ID=40139680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09252172A Withdrawn EP2184556A1 (de) 2008-11-11 2009-09-12 Luftsammelbox mit mehreren radial angeordneten Lufteinlässen und einem Luftauslass und ein Herstellungsverfahren für eine solche

Country Status (3)

Country Link
EP (1) EP2184556A1 (de)
CN (1) CN101737892A (de)
GB (1) GB2465197B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2428743A1 (de) * 2010-09-10 2012-03-14 TROX GmbH Anschlusskasten für ein Kanalsystem einer raumlufttechnischen oder klimatechnischen Anlage
FR2986581A1 (fr) * 2012-02-03 2013-08-09 Aldes Aeraulique Dispositif de ventilation mecanique controlee et son procede de fabrication

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7489574B2 (ja) 2020-03-30 2024-05-24 パナソニックＩｐマネジメント株式会社 チャンバー装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234934U (de) * 1988-08-31 1990-03-06
JP2003074958A (ja) * 2001-09-05 2003-03-12 Fujimori Sangyo Kk 空気調和装置用分岐型チャンバー
FR2855251A1 (fr) * 2003-05-19 2004-11-26 Atlantic C V I Dispositif de repartition de debit pour ventilation mecanique controlee
JP2006029613A (ja) * 2004-07-13 2006-02-02 Fujimori Sangyo Kk 空気調和装置用分岐型チャンバー
US20060199505A1 (en) * 2005-02-08 2006-09-07 Fettkether L.L.C. Plastic HVAC component system and method for installing the same
NL1029313C2 (nl) * 2005-06-22 2006-12-27 Innosource B V Luchtafvoerinrichting.
JP2007003087A (ja) * 2005-06-23 2007-01-11 Matsushita Electric Ind Co Ltd 分岐チャンバーおよび換気装置
US7338095B1 (en) * 2005-12-05 2008-03-04 Dura-Tite Systems, Llc Plastic heating duct connectors
EP1979623A1 (de) * 2006-01-25 2008-10-15 Applied Energy Products Limited Verbessertes laufrad und gebläse

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2630487B1 (fr) * 1988-04-20 1990-08-24 Bizet Andre Appareillage pour la ventilation des sepultures a enceinte etanche
JP2584662B2 (ja) * 1988-07-11 1997-02-26 川崎重工業株式会社 空調装置用冷暖気混合室の構造
FR2760520B1 (fr) * 1997-03-10 1999-04-23 Elge Etablissements Grandvuine Groupe de ventilation mecanique controlee
JP2005083598A (ja) * 2003-09-04 2005-03-31 Densho:Kk 屋根裏・床下・居室収納部等の同時換気システム

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0234934U (de) * 1988-08-31 1990-03-06
JP2003074958A (ja) * 2001-09-05 2003-03-12 Fujimori Sangyo Kk 空気調和装置用分岐型チャンバー
FR2855251A1 (fr) * 2003-05-19 2004-11-26 Atlantic C V I Dispositif de repartition de debit pour ventilation mecanique controlee
JP2006029613A (ja) * 2004-07-13 2006-02-02 Fujimori Sangyo Kk 空気調和装置用分岐型チャンバー
US20060199505A1 (en) * 2005-02-08 2006-09-07 Fettkether L.L.C. Plastic HVAC component system and method for installing the same
NL1029313C2 (nl) * 2005-06-22 2006-12-27 Innosource B V Luchtafvoerinrichting.
JP2007003087A (ja) * 2005-06-23 2007-01-11 Matsushita Electric Ind Co Ltd 分岐チャンバーおよび換気装置
US7338095B1 (en) * 2005-12-05 2008-03-04 Dura-Tite Systems, Llc Plastic heating duct connectors
EP1979623A1 (de) * 2006-01-25 2008-10-15 Applied Energy Products Limited Verbessertes laufrad und gebläse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2428743A1 (de) * 2010-09-10 2012-03-14 TROX GmbH Anschlusskasten für ein Kanalsystem einer raumlufttechnischen oder klimatechnischen Anlage
FR2986581A1 (fr) * 2012-02-03 2013-08-09 Aldes Aeraulique Dispositif de ventilation mecanique controlee et son procede de fabrication

Also Published As

Publication number Publication date
GB2465197B (en) 2012-11-07
CN101737892A (zh) 2010-06-16
GB2465197A (en) 2010-05-12
GB0820558D0 (en) 2008-12-17

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