EP1120610B1 - Assembly for a roof fan - Google Patents

Assembly for a roof fan

Info

Publication number
EP1120610B1
EP1120610B1 EP01200316A EP01200316A EP1120610B1 EP 1120610 B1 EP1120610 B1 EP 1120610B1 EP 01200316 A EP01200316 A EP 01200316A EP 01200316 A EP01200316 A EP 01200316A EP 1120610 B1 EP1120610 B1 EP 1120610B1
Authority
EP
European Patent Office
Prior art keywords
assembly
support
fan
support legs
receiving
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.)
Expired - Lifetime
Application number
EP01200316A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1120610A2 (en
EP1120610A3 (en
Inventor
Andreas Hendricus Johannes Bijmans
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.)
HOLLAND HEATING
Original Assignee
HOLLAND HEATING
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 HOLLAND HEATING filed Critical HOLLAND HEATING
Publication of EP1120610A2 publication Critical patent/EP1120610A2/en
Publication of EP1120610A3 publication Critical patent/EP1120610A3/en
Application granted granted Critical
Publication of EP1120610B1 publication Critical patent/EP1120610B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F24F7/02—Roof ventilation
    • F24F7/025—Roof ventilation with forced air circulation by means of a built-in ventilator

Definitions

  • the present invention relates to an assembly for a roof fan.
  • Fans for discharging inside air are applied on a large scale. Such fans are often placed on a flat or sloping roof wherein the inside air is blown out upward, i.e. in vertical direction, or sideways, i.e. in horizontal direction.
  • a fan driven by an electric motor also referred to as a motor/fan combination
  • the fan casing which protects the motor/fan combination against (weather) influences from outside and which ensures a correct guiding of the airflows.
  • An upright support consisting of a large number of separate components on which the motor/fan combination can be mounted.
  • a drawback of such a support is that a correct alignment of the motor/fan combination is difficult to realize, with the result that the assembly must be readjusted later.
  • the fitting time is moreover relatively long due to the large number of components required for fitting of the assembly.
  • the known support has the further drawback that for each type of motor/fan combination, i.e. for each motor/fan combination of a determined form, weight, outlet direction, capacity and so on, a separate support has to be designed, which entails further cost.
  • EP-A-0 972 991 discloses an assembly for a roof fan wherein the motor fan combination is placed on three support legs (organes (4) d'association) which are mounted on a support.
  • the fan casing of the assembly is to be attached on a fixed part on the support legs.
  • the fan casing can be fixed quickly and simply to the three legs without special tools being required herein.
  • the positioning of the fan casing does not represent any further problem since the channel for receiving the fixing means of the casing extends in height direction. Such a channel further provides universal applicability of the support legs on a large number of types of fan casing.
  • the channel is provided with screw thread and the fixing means comprise one or more fixing parts provided with screw thread, and the three support legs are preferably formed by dividing a single elongate profile into three parts.
  • the fixing means comprise one or more fixing parts provided with screw thread
  • the three support legs are preferably formed by dividing a single elongate profile into three parts.
  • the profile has a closed form in cross-section, which provides a relatively large maximum permissible load.
  • this form is curved in order to reduce the air resistance of the air flowing along the support legs. Owing to the reduced air resistance a smaller and lighter motor/fan combination can be applied.
  • one or more receiving parts are provided close to the upper end of a support leg for receiving one or more self-tapping fastening bolts of the motor/fan combination.
  • the motor/fan combination can hereby be fixed to the legs in simple and rapid manner.
  • the channel and/or the receiving part extend along the whole height of the support leg.
  • Long profiles (of about 6 metres profile length) are herein supplied, wherein support legs of desired length can be realized simply and quickly by sawing of the profiles. It is moreover possible to dispense with additional manufacturing processes, such as for instance arranging openings for receiving fastening bolts and the like.
  • a fan casing is arranged on the radially outward directed side of the support legs, preferably by arranging a bolt in the above mentioned longitudinal channel of each of the support legs.
  • this casing is constructed from two substantially three-sided parts which can be fixed together to form a hexagonal casing round the three support points.
  • the three-sided part is herein preferably manufactured integrally from a twice bent plate-like part.
  • the plate-like part can be formed by an aluminium plate, for instance in the case of a vertically blowing fan, or formed by a wire grid in the case of a horizontally blowing fan.
  • the casing can be manufactured simply and quickly by embodying it as plates (bent a number of times).
  • the assembly comprises one or more brackets for fixing a wire grid of the appropriate mesh width to support legs, wherein the bracket comprises:
  • a wire grid of a different mesh width is applied subject to the requirements of the client or of the applied motor/fan combination.
  • the bracket according to the present invention provides a simple fixing of the wire grid to the support legs, which fixing is also universally applicable for wire grids of different mesh widths.
  • a support plate 1 is mounted on a flat roof (not shown) using bolts 2.
  • Support plate 1 is provided with an inlet cone 7 for guiding the air flowing upward from below.
  • Three support legs 3 are fixed onto the support plate, this such that each of these is positioned at one of the corner points of an imaginary triangle, wherein the centre m of the triangle corresponds with the rotation axis of the motor/fan combination.
  • support plate 1 is provided with recessed portions 17 so that using bolts 19 the supports 3 can be fixed in stable manner relative to the support plate.
  • Motor 5 Arranged on top of the support legs is a motor plate 4 on which an electric motor 5 is placed using bolts 8.
  • This electric motor drives a fan 6 with which air is drawn in.
  • Motor 5 is preferably of the external pole type. In this case the rotor rotates round an internal stator provided with windings.
  • the motors are low-noise and maintenance-free through the use of groove ball bearings closed on two sides and using special grease lubricant.
  • Such external pole motors provide possibilities for compact construction of the roof fans, a direct coupling of motor and fan, without additional components, a good speed regulation with stepping or modulating control on the basis of variation in voltage, an optimum balancing of all rotating parts as a unit and a relatively smooth starting operation with relatively low starting currents.
  • FIGs 3a to 3c show a preferred embodiment of a fan in which air is drawn in from below (arrow A) and discharged sideways (arrow B) to the outside (arrow C) via a wire grid 11.
  • FIGs 4a to 4c is shown a roof fan wherein the indrawn air (arrow A) is guided upward (arrow B) via a grid 15 into the outside air (arrow D).
  • a hood 10 is fixed to each of the support legs 3 using a connecting piece 12.
  • a wire grid 11 is provided. Wire grid 11 is fixed to support legs 3 in a manner as described below.
  • a tunnel 13 is fixed to support legs 3 using a number of bolts 14, while in this case the upper side of the roof fan is protected using a wire grid 15 embodied in accordance with machine guidelines.
  • Both tunnel 13 and wire grid 11/15 are each constructed from two parts.
  • Figure 5 shows a preferred embodiment of a support leg 3.
  • a significant advantage of this embodiment of support leg 3 is that it can be manufactured simply and inexpensively by extrusion techniques.
  • the profile is supplied in long lengths.
  • the profile is sawn into parts of suitable length on-site.
  • the diverse components can be fixed to support leg 3 without using special tools. All fixing options are incorporated in the special construction of the support leg, wherein the leg nevertheless remains simple to manufacture.
  • the support is provided in longitudinal direction with a channel 33, the inner wall of which is provided with screw thread 35. Screws, such as for instance bolts 14 for fastening a tunnel 13 and bolts 46 for fastening a wire grid bracket 40, can be screwed into this screw thread 35. Since channel 33 is provided along the whole height of support 3, the bolts can be tightened at any desired position in height direction. This not only means a simple fitting, it also provides improved possibilities for alignment of the assembly.
  • Channel 33 is also provided with stop surfaces 34 to further increase the stability of the connection between support leg 3 and the fixed component.
  • Figure 5 shows that a support leg 3 is manufactured as a profile with a closed cross-section. This means that the profile can withstand a relatively heavy load.
  • On the inside of the profile lips 36 and 37 are provided along the whole height which form respective openings on the end surface of profile 3. Into these openings can be tightened self-tapping bolts with which motor plate 4 of the motor/fan combination can be fixed.
  • Figure 6 shows the wire grid bracket 40 with which a wire grid 11 can be fixed to support legs 3.
  • the body 41 of the bracket is provided with a first recess, in which the first wire of the wire grid can be received, in addition to second respectively third recesses 43 and 44 in which an adjacent wire of the wire grid is received in accordance with the mesh width of the wire grid.
  • recesses 42 and 43 serve to receive adjacent wires of the wire grid, while in the case of larger mesh widths recesses 42 and 44 fulfill this function.
  • a bolt (not shown) which can be tightened in channel 33 of support leg 3.
  • the bracket has a convex form, in this case of about 0.2 mm. This has the purpose, as a result of the elastic properties of body 41, of pressing the bracket 40 firmly against the wire ends.
  • the bracket 40 is manufactured from a plastic and strengthened with glass fibre.
  • FIG 7 an acoustically insulated version of a vertically blowing roof fan.
  • air is drawn in (arrow A) and guided along a number of sound-insulating cassettes (arrow B) and then discharged vertically upward (arrow E).
  • an outer cassette 25 which is manufactured from a plate 27 and a perforated plate 26 mounted thereon on the inside.
  • Acoustically absorbent material preferably rockwool
  • An inner cassette 20 is likewise provided, wherein absorbent material, preferably in the form of rockwool 22, is arranged between an inner wall and a perforated outer wall 23. Since the sound is propagated spherically between the two perforated plates 26 and 23, it will be absorbed in large part by absorbent material 22.

Landscapes

  • 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)
  • Building Environments (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
EP01200316A 2000-01-28 2001-01-29 Assembly for a roof fan Expired - Lifetime EP1120610B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1014229 2000-01-28
NL1014229 2000-01-28

Publications (3)

Publication Number Publication Date
EP1120610A2 EP1120610A2 (en) 2001-08-01
EP1120610A3 EP1120610A3 (en) 2002-11-06
EP1120610B1 true EP1120610B1 (en) 2006-08-16

Family

ID=19770700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01200316A Expired - Lifetime EP1120610B1 (en) 2000-01-28 2001-01-29 Assembly for a roof fan

Country Status (6)

Country Link
EP (1) EP1120610B1 (da)
AT (1) ATE336700T1 (da)
DE (1) DE60122221T2 (da)
DK (1) DK1120610T3 (da)
ES (1) ES2267661T3 (da)
PT (1) PT1120610E (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10239381B2 (en) 2017-01-23 2019-03-26 TSI Products, Inc. Vehicle roof fan

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0207382D0 (en) 2002-03-28 2002-05-08 Holland Heating Uk Ltd Computer cabinet

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526290A (en) * 1949-07-21 1950-10-17 Isel I Solzman Air exhauster
DE2209301C2 (de) * 1972-02-28 1974-02-07 Buettner-Schilde-Haas Ag, 4150 Krefeld Dachlüfter
DE2557762A1 (de) * 1975-12-20 1977-06-30 Buettner Schilde Haas Ag Dachluefter fuer waagerechten ausblas
FR2709534B1 (fr) * 1993-09-03 1996-02-09 Andre Amphoux Dispositif statique/dynamique pour l'évacuation de fluide gazeux.
FR2781278B1 (fr) * 1998-07-17 2000-09-29 Andre Amphoux Dispositif mixte, statique/dynamique pour l'evacuation de fluides gazeux
NL1017211C2 (nl) * 2000-01-28 2001-07-31 Holland Heating Bv Samenstel voor een dakventilator.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10239381B2 (en) 2017-01-23 2019-03-26 TSI Products, Inc. Vehicle roof fan

Also Published As

Publication number Publication date
DE60122221T2 (de) 2007-08-09
ATE336700T1 (de) 2006-09-15
PT1120610E (pt) 2006-11-30
EP1120610A2 (en) 2001-08-01
EP1120610A3 (en) 2002-11-06
DE60122221D1 (de) 2006-09-28
DK1120610T3 (da) 2006-11-27
ES2267661T3 (es) 2007-03-16

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