WO2005116526A1 - Extracteur d’air du type statique comprenant une partie superieure dont la face externe est inclinee - Google Patents
Extracteur d’air du type statique comprenant une partie superieure dont la face externe est inclinee Download PDFInfo
- Publication number
- WO2005116526A1 WO2005116526A1 PCT/FR2005/001147 FR2005001147W WO2005116526A1 WO 2005116526 A1 WO2005116526 A1 WO 2005116526A1 FR 2005001147 W FR2005001147 W FR 2005001147W WO 2005116526 A1 WO2005116526 A1 WO 2005116526A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air extractor
- slope
- diameter
- opening
- small base
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
- F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
- F23L17/08—Tops for chimneys or ventilating shafts; Terminals for flues with coaxial cones or louvres
Definitions
- Static type air extractor comprising an upper part whose external face is inclined
- the invention relates to a static air extractor for ventilation, as well as a ventilation installation comprising such an extractor.
- the face of the upper part is in the form of a cup of generally circular shape comprising an annular external part and a central part offset axially upward relative to the external part annular, the central part and the annular outer part being planar or substantially planar.
- Such an embodiment has a drawback due to the flatness of the outer face of the upper part. In fact, it can then produce accumulations of snow, dust or detritus on the upper part, which risks damaging the air extractor.
- the upper part also comprises an annular external part and a central part offset axially upwards relative to the annular external part.
- the outer face of this upper part is formed by one or more inclined walls, which avoids the drawback described above.
- the upper part comprises a centrifugal turbine located inside the upper part and whose blades extend in the free space formed between the lower part and the upper part.
- the extractor is therefore a dynamic extractor for which it is necessary to provide means for supplying power and controlling the turbine, which leads to significant energy costs.
- Such an embodiment is therefore unsuitable for producing a static extractor comprising no means similar to a turbine or a fan.
- the invention aims to overcome these drawbacks by proposing a static extractor, the upper part of which avoids the accumulation of snow, dust or detritus.
- the extractor according to the invention is devoid of drive means and therefore does not require any power supply or control means.
- the invention relates to a static air extractor of the type comprising a lower part and an upper part placed facing each other and spaced from one another by being secured to each other. other by means of support elements forming spacers, defining between them a free, open space forming a venturi, in communication with an opening formed in the lower part, the lower part comprising a first part of frustoconical shape whose small base is turned towards the upper part and whose large base is directed opposite and a second part of generally frustoconical shape, associated with the first part, the large bases being common or substantially common and the small bases being opposite, the upper part being delimited by an external face, opposite said opening, said external face being formed by the upper face of a wall forming an adhesive annular rette and a central part of generally conical or frustoconical shape whose inclined faces form a first slope (p1) and whose large base is turned towards the flange and the small base is axially offset upwards relative to the
- the internal face is therefore the reflex of the external face, which makes it possible to release a larger free space between the lower part and the upper part and therefore a more effective venturi.
- the upper part comprises an internal face turned towards the opening, said internal face being formed by a substantially planar wall and perpendicular to the axis of the extractor.
- the invention relates to a ventilation installation of a building or of a room of a building comprising a ventilation duct and an air extractor as described above, the lower part of the extractor being mounted on the end exit part of the duct so that the opening made in the lower part communicates with the interior of the duct, the extractor participating in the ventilation of the building or of the room of the building.
- Figure 1 is a sectional view of a static extractor according to a first embodiment, in which the lower face of the upper part has a shape similar to the external face, the extractor being mounted on a ventilation duct.
- Figure 2 is a sectional view of an extractor according to a variant of the first embodiment of the static extractor.
- Figure 3 is a sectional view of the lower part of a linear extractor according to a variant of the first embodiment.
- Figure 4 is a bottom view in section of the lower part according to an alternative embodiment, said lower part for forming a linear aerator.
- Figure 5 is a front view of a static extractor according to a second embodiment, in which the underside of the upper part is substantially planar, a grid surrounding the free space being partially shown.
- the static air extractor 1, according to one embodiment of the invention, is intended to be mounted on the end part 3 of the outlet of a duct 2 in a ventilation installation of a building or a room of building.
- the extractor has a general axis of symmetry D which, when the extractor 1 is mounted, is placed vertically or substantially vertically.
- the axis D is an axis of revolution, the extractor 1 being generally circular around the axis D.
- the extractor 1 comprises a lower part 4 and an upper part 5.
- the two parts 4 and 5 are placed facing each other and separated from one another by being secured to one another by means of elements of support forming spacers
- the lower and upper parts 4 and 5 define between them a free space
- the free space 7 is in communication with an opening 8 formed in the lower part 4 at its upper end.
- the opening 8 is itself in communication with the duct 2.
- the lower part 4 comprises a first part 9 of frustoconical shape whose small base 10 is turned towards the upper part 5 and whose large base 11 is directed opposite and a second part 12 of form general frustoconical, associated with the first part 9.
- the second part 12 also comprises a large base 13 common or substantially common to the large base 11 of the first part 9 and a small base 14 opposite to, and separated from, the small base 10 from the first room 9.
- the diameter of the small bases 10 and 14 of the first and second parts 9 and 12 is substantially equal to the diameter d of the opening 8 and the diameter of the large bases 11 and 13 is between 1, 5 and 2.5 times the diameter of the small bases 10 and 14.
- the angle ⁇ between the large base 11 and the inclined wall 9a of the first part 9 is for example between 20 ° and 50 °.
- the small base 10 can be surmounted, towards the upper part 5, by a lip 15, of substantially circular section, fixed to the small base 10, of axis D and of diameter identical to that of the small base 10.
- the inclined wall 9a of the first part 9 may include a variation in slope so that the first part 9 forms two substantially frustoconical parts 35 and 36.
- the frustoconical part 36 comprises a large base formed by the large base 11 and a small base 37 opposite and separated from the small base 14 of the second part 12.
- the small base 37 and the small base 10 respectively form the large base and the small base of the part 35.
- L angle angle formed between the inclined wall of the part 35 and the base 37 is for example between 50 ° and 75 °.
- This part 9 can comprise (FIG. 2) or not (FIG. 3) a lip 15, as described above.
- a lip 16, shown in FIG. 2, of substantially circular section and with the same axis D and diameter as the small base 14, can be fixed on the lower part 4, at the location of the small base 14, and facing down opposite the top 5.
- the height h1 of the lip 15, counted parallel to the axis D, is of the order of 0.01 to 0.02 times the diameter d.
- the height h2 between the free peripheral edge of the lip 15 and the upper part 5, counted parallel to the axis D, is of the order of 0.45 to 0.8 times the diameter d.
- the upper part 5 is delimited by an external face 17, situated opposite the opening 8.
- the external face 17 is formed by the upper face 34 of a wall 18.
- the wall 18 forms an annular flange 19 and a central part 20 of generally conical or frustoconical shape, the large base 21 of which faces the flange 19 and the small base 22 of which is offset axially upwards relative to the flange 19.
- the axial offset between the small base 22 of the central part 20 and the flange 19 is for example between 0.2 and 0.8 times the diameter d of the opening 8.
- the diameter d 'of the small base 22 of the central part 20 is for example between 0.8 and 1.25 times the diameter d of the opening 8.
- the diameter d' can be substantially equal to the diameter d , as shown in Figure 1.
- the diameter d 'of the small base 22 can be between 0.4 and 0.6 times the outside diameter d "of the annular flange 19.
- the diameter d' can be substantially equal to half the diameter d" .
- the flange 19 has a substantially planar shape. It is also conceivable that this collar 19 has an upper face inclined downward.
- the inclined faces 23 of the central part 20 form a first slope p1.
- This slope p1 forms an angle ⁇ of inclination relative to a straight line parallel to the axis D.
- the angle ⁇ is for example between 15 ° and 45 ° and is in particular of the order of 40 °, as shown in Figures 1 and 2.
- the central part 20 of the upper part 5 is connected to the annular collar 19 by a connection wall 24 of generally frustoconical shape.
- the inclined faces 25 of the connecting wall 24 form a second slope p2.
- the second slope p2 is less than the first slope p1.
- This slope p2 forms a second angle ⁇ of inclination relative to a straight line parallel to the axis D.
- the angle ⁇ is for example between 45 ° and 90 ° and is in particular of the order of 75 °, as shown in Figures 1 and 2.
- the small base 22 is surmounted by a cap 26 of generally conical shape whose inclined faces 27 form a third slope p3.
- the third slope p3 is less than the first slope p1 and is, for example, substantially equal to or close to the second slope p2.
- the annular flange 19 may have an outer edge 28 falling downwards.
- the axial length of the falling outer edge 28 can be of the order of one third or two thirds of the axial offset of the central part 20 relative to the annular flange 19.
- the air extractor 1 is devoid of drive means, such as turbines and the like, arranged in the free space 7. This space 7 is therefore empty and the extractor 1 is of the static type.
- the upper part 5 comprises an internal face 31 formed by the lower face 33 of the wall 18 so that said internal face 31 is similar in shape to the external face 17.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0404897A FR2869976B1 (fr) | 2004-05-06 | 2004-05-06 | Extracteur d'air du type statique comprenant une partie superieure dont la face externe est inclinee |
FR0404897 | 2004-05-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005116526A1 true WO2005116526A1 (fr) | 2005-12-08 |
Family
ID=34946834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/001147 WO2005116526A1 (fr) | 2004-05-06 | 2005-05-09 | Extracteur d’air du type statique comprenant une partie superieure dont la face externe est inclinee |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2869976B1 (fr) |
WO (1) | WO2005116526A1 (fr) |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH136860A (de) * | 1928-11-30 | 1929-12-15 | Roesner Ernst | Aufsatz für Schornsteine und Ventilationsschächte. |
GB367554A (en) * | 1931-02-14 | 1932-02-25 | William Henry Clegg | Improvements in mushroom or cone shaped cowls |
GB1428366A (en) * | 1972-03-23 | 1976-03-17 | British Hydromechanics | Chimneys structures |
GB2110807A (en) * | 1981-11-30 | 1983-06-22 | Malcolm James Bennett | Flue terminals |
US4603619A (en) * | 1980-01-25 | 1986-08-05 | Andre Amphoux | Flue terminal gas extractor |
FR2658271A1 (fr) * | 1990-02-09 | 1991-08-16 | Amphoux Andre | Dispositif pour l'aspiration et le rejet de gaz ou fumees et installation comportant une pluralite de tels dispositifs. |
EP0641973A1 (fr) * | 1993-09-03 | 1995-03-08 | André Amphoux | Dispositif pour l'évacuation de fluide gazeux |
FR2709534A1 (fr) * | 1993-09-03 | 1995-03-10 | Amphoux Andre | Dispositif statique/dynamique pour l'évacuation de fluide gazeux. |
US5437574A (en) * | 1992-08-03 | 1995-08-01 | Lyemance International, Inc. | Top sealing chimney cap |
EP0772003A1 (fr) * | 1995-11-03 | 1997-05-07 | André Amphoux | Dispositif pour aspirer un fluide gazeux à travers un conduit pour le rejeter à l'extérieur de celui-ci |
EP0840070A1 (fr) * | 1996-11-05 | 1998-05-06 | André Amphoux | Extracteur d'air destiné à la ventilation |
-
2004
- 2004-05-06 FR FR0404897A patent/FR2869976B1/fr not_active Expired - Fee Related
-
2005
- 2005-05-09 WO PCT/FR2005/001147 patent/WO2005116526A1/fr active Application Filing
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH136860A (de) * | 1928-11-30 | 1929-12-15 | Roesner Ernst | Aufsatz für Schornsteine und Ventilationsschächte. |
GB367554A (en) * | 1931-02-14 | 1932-02-25 | William Henry Clegg | Improvements in mushroom or cone shaped cowls |
GB1428366A (en) * | 1972-03-23 | 1976-03-17 | British Hydromechanics | Chimneys structures |
US4603619A (en) * | 1980-01-25 | 1986-08-05 | Andre Amphoux | Flue terminal gas extractor |
GB2110807A (en) * | 1981-11-30 | 1983-06-22 | Malcolm James Bennett | Flue terminals |
FR2658271A1 (fr) * | 1990-02-09 | 1991-08-16 | Amphoux Andre | Dispositif pour l'aspiration et le rejet de gaz ou fumees et installation comportant une pluralite de tels dispositifs. |
US5437574A (en) * | 1992-08-03 | 1995-08-01 | Lyemance International, Inc. | Top sealing chimney cap |
EP0641973A1 (fr) * | 1993-09-03 | 1995-03-08 | André Amphoux | Dispositif pour l'évacuation de fluide gazeux |
FR2709534A1 (fr) * | 1993-09-03 | 1995-03-10 | Amphoux Andre | Dispositif statique/dynamique pour l'évacuation de fluide gazeux. |
EP0772003A1 (fr) * | 1995-11-03 | 1997-05-07 | André Amphoux | Dispositif pour aspirer un fluide gazeux à travers un conduit pour le rejeter à l'extérieur de celui-ci |
EP0840070A1 (fr) * | 1996-11-05 | 1998-05-06 | André Amphoux | Extracteur d'air destiné à la ventilation |
Also Published As
Publication number | Publication date |
---|---|
FR2869976B1 (fr) | 2006-08-18 |
FR2869976A1 (fr) | 2005-11-11 |
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