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
  • F24F13/0254—Ducting arrangements characterised by their mounting means, e.g. supports
• • 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
  • F16L23/00—Flanged joints
  • F16L23/12—Flanged joints specially adapted for particular pipes
  • F16L23/14—Flanged joints specially adapted for particular pipes for rectangular pipes
• • 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
  • F16L9/003—Rigid pipes with a rectangular cross-section
• • 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
  • F24F13/0209—Ducting arrangements characterised by their connecting means, e.g. flanges

Definitions

• the present invention relates to a high rigidity flange connection device for joining ventilation ducts or the like.
• stiffening frames or flanges are well known consisting of a preliminary assembly of individual profiles which adapt to the free ends of the ducts.
• the ventilation ducts often have large dimensions and they are frequently suspended using special means so that they are subjected to weight constraints and / or significant internal pressures which deform the ducts as well as the hollow profiles of their respective flanges which results in a lack of rigidity in the connection and therefore a lack of tightness at the level of the sheath connections.
• pipe segments with planar sheet walls have been designed with a flange connection formed at the free ends of the walls; said flange connection consisting of a hollow profile completely closed on itself; this is for example the case of Swiss patent CH 680,873 describing an air duct segment.
• the hollow profile of the flange connection is formed by four wings obtained by four successive foldings towards the inside of the hollow profile, the first and fourth wings of which extend perpendicular to the wall of the channel, the second wing returns to the wall of the channel. as an oblique support wing, and the third wing is arranged parallel to the wall of the channel so that the hollow profile has a triangular cross section.
• the third wing of the hollow profile is in contact with the wall of the channel and the fourth wing is in contact with the first wing, so that the hollow profile is closed, thus providing a rigid beam improving the tightness of the flange connection.
• this profile has the drawback of not ensuring a perfect seal at the sheath connections, in particular, against infiltration. outside water.
• One of the aims of the invention is therefore to overcome these drawbacks by proposing a high-rigidity flange connection device making it possible to join sheaths while ensuring perfect sealing of the connection.
• the high rigidity flange connection device for joining duct sections for example, ventilation ducts, duct sections or the like, of polygonal sections comprising hollow profiles s' extending towards the outside of the sheaths, each profile comprising a bearing edge so that, when two sheath sections are joined, the bearing edges of the corresponding profiles are joined, and said hollow profiles cooperating with pieces of angle introduced into the respective hollows of two neighboring profiles of the same section of sheath is remarkable in that each hollow profile results from a winding of sheet metal by five successive folds generally in the same direction and towards the inside of the profile, so that a section cover polygonal, forming a joint cover, or capable of being clipped onto two joined profiles, that the cross section of the profile is generally closed and that said profile has at least one internal fold which extends parallel to the internal face of the edge support so that, when jointing two sections of sheath, the corner pieces constrain the internal fold on the internal face of said support edge completely closing the profile on itself thus providing
• the hollow profiles come from and formed from at least one of the free ends of the sheath sections.
• FIG. 1 is a partial exploded perspective view of a flange connection between two sections of ducts
• FIG. 2 is a partial perspective view of a hollow profile according to the invention
• FIG. 3 is a perspective view of a corner piece in 2 parts according to the invention.
• FIG. 4 is a perspective view of a corner piece in the form of a square according to the invention.
• FIG. 5 is a sectional view along the axis V-V of Figure 1.
• the section 1a of a sheath is connected to a second section 1b, shown in FIGS. 1 and 5, by a flange connection device 2.
• Each section of sheaths a and 1b has four flat walls 3, conventionally made of sheet metal, which extend perpendicularly to each other by virtue of folds 4 at right angles determining for each section of sheaths la and lb a generally rectangular section.
• each section 1a and 1b has at least one free end 5 corresponding to the ends of their walls 3 and situated in a plane perpendicular to the longitudinal axis of symmetry A of said sections 1a and 1b.
• this device consists of hollow profiles 6 extending transversely along the ends of each wall 3 towards the outside of the sections 1a and 1b, of pieces of angles 7 and possibly of a cover or joint cover 8 as will be seen below.
• the bearing edge 9 is extended by a wing 11 extending towards the sheath section, obtained by a second bending 12 of the sheet, parallel to the bending 10, and forming an acute angle, for example of 45 °, with said bearing edge 9.
• the wing 11 is extended by a second wing 13 obtained by a third fold 14, parallel to the previous ones and in the same direction as the previous folds 10 and 12, that is to say towards the inside of the profile 6.
• the wing 13 is also extended by a wing 15, obtained by a fourth folding 16, parallel to the previous ones, towards the inside of the profile 6, extending generally parallel to the wall 3 of the section lb towards the bearing edge 9 so that said wing 15 is in contact with the wall 3 of the sheath section lb.
• the wing 15 can extend parallel to the wall 3 of the section lb so that the distance separating said wing 15 and the wall 3 is only a few millimeters without affecting the rigidity of the profile. 6 and therefore its effectiveness.
• the wing 15 is finally extended by an internal fold 17, obtained by a final folding 18, parallel to the previous ones, always towards the inside of the profile 6 so that it extends generally parallel to the internal face of the edge. support 9 so that, when the two sheath sections 1a and 1b are joined, the corner pieces 7 constrain the internal fold 17 on the internal face of said support edge 9 completely closing the profile 6 on itself to provide a particularly rigid and solid beam effect as can be seen in FIG. 5.
• the hollow profiles 6 may include a recess obtained by folding the profile outward to obtain a particular profile making it possible to receive, for example, a protective member such as a joint cover or the like.
• the hollow profiles 6 can also be formed by successive folds as described above from independent sheet plates. They then form individual profiles constituting, by a preliminary assembly by means of corner pieces 7, stiffening frames which conventionally adapt to the free ends 5 of the sheath sections 1a and 1b by welding for example.
• the corner pieces 7, with reference to FIGS. 4 and 5 are generally flat angled square pieces of metal, a thickness of a few millimeters having a middle plate 19 connecting two branches 20,21 which can slide respectively in the hollows of two profiles 6 neighbors of the same section of sheath there or lb.
• the branches 20, 21 extend on either side of the central plate 19 in the same plane and over an equal distance so that the corner pieces 7 have an axis of symmetry B, which extends in the plane formed by said branches 20,21, shown in dotted lines in Figure 4, to be able to be introduced into the hollows of two profiles 6 any neighbors.
• the central plate 19 furthermore comprises, in its central part, a hole 22 for receiving clamping means such as a bolt for example.
• the hole 22 is preferably centered on the axis of symmetry B to distribute uniformly over the two branches 20,21 the forces due to the tightening of the corner pieces 7, one against the other, when connecting two sections of ducts 1a and 1b (FIG. 5).
• the branches 20, 21 also include a recess 23, obtained by stamping said branches 20, 21, extending longitudinally over part of their length so that, when the two sheath sections 1a and 1b are joined, each branch 20,21 is in contact simultaneously with the internal fold 17 and the internal face of the bearing edge 9 of the corresponding hollow profile 6 as 1 'indicates in Figure 5.
• each branch 20,21 comprises, on the same face that the recess 23, a boss 24 of generally triangular section extending longitudinally over a part of its length so that said boss 24 matches a part of the internal surface when the branches 20, 21 of the corner pieces 7 are introduced in the hollows of said profiles 6 to ensure greater rigidity in the profiles 6.
• the branches 20,21 of the corner pieces 7, such as described above, are positioned in the respective recesses of two neighboring profiles 6 during the manufacture of the sheath sections 1a and 1b. Indeed, the sections there and lb are then respectively obtained from four rectangular sheets 3 of sheet metal at the transverse ends of which hollow profiles have been formed, as described above.
• the branches 20, 21 of the corner pieces 7 are then slid into the respective hollows of two profiles 6 of two plates 3 at each of their ends, then, said plates 3 are joined by stapling, for example, thus forming a right angle for finally obtain a sheath section of rectangular section.
• the corner pieces 7, with reference to FIGS. 3 and 5 are formed from two generally flat plates a few millimeters thick forming two branches 20,21 distinct overlapping each other at their ends at a right angle.
• Each branch 20, 21 comprises at one of its ends a nesting zone 25, respectively 26, generally square, conventionally obtained by stamping, comprising respectively a hole 27 and 28 in their centers so that the nesting zones 25.26 respectively of the branches 20,21 being brought into contact, the hole 27 is exactly in line with the hole 28 to receive securing means such as a rivet, a bolt or the like and that the branches 20,21 are blocked in rotation and translation relative to each other.
• the branch 21 comprises at the edge of the nesting zone 26 a recess 29, also obtained by stamping, so that the branches 20, 21 extend in the same plane when they are assembled.
• the branches 20,21 further comprise a recess 23, obtained by stamping said branches 20,21, extending longitudinally over a part of their length so that when jointing of the two sections of sheath there and lb_, each branch 20, 21 is in contact simultaneously with the internal fold 17 and the internal face of the bearing edge 9 of the corresponding hollow profile 6 as 1 'indicates in FIG. 5.
• each branch 20, 21 comprises, on the same face as the recess, a boss 24 of triangular section extending longitudinally over part of its length so that said boss 24 follows a part of the internal surface when the branches 20 , 21 of the corner pieces 7 are introduced into the hollows of said profiles 6 to ensure greater rigidity in the profiles 6.
• connection device 2 finally comprises, with reference to FIGS. 1 and 5, a seal 30, conventionally elastic, positioned between the respective bearing edges of two profiles 6 (FIG. 5) to perfect the seal during the jointing of the two sheath sections 1a and 1b- It also includes a joint cover 8 comprising straight elements 31 and bent elements 32 of generally polygonal sections capable of being clipped onto two joined profiles to protect the connection against infiltration of external water.
• flange connection device can be adapted to all types of sheaths, conduits or the like, such as sheaths of polygonal cross section and that the examples which have just been given are not as particular illustrations which in no way limit the fields of application of the invention.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Duct Arrangements (AREA)
• Flanged Joints, Insulating Joints, And Other Joints (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=9547586

Family Applications (1)

Country Status (4)

Families Citing this family (6)

Family Cites Families (3)

• 1999
  • 1999-07-01 FR FR9908479A patent/FR2795802B1/fr not_active Expired - Fee Related
• 2000
  • 2000-07-03 EP EP00948071A patent/EP1198687A1/de not_active Withdrawn
  • 2000-07-03 WO PCT/FR2000/001886 patent/WO2001002777A1/fr not_active Application Discontinuation
  • 2000-07-03 AU AU61651/00A patent/AU6165100A/en not_active Abandoned

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events