EP0878664A1 - Dispositif d'injection de gaz pour l'aide au tirage dans un système de transport de fluide gazeux - Google Patents
Dispositif d'injection de gaz pour l'aide au tirage dans un système de transport de fluide gazeux Download PDFInfo
- Publication number
- EP0878664A1 EP0878664A1 EP98401133A EP98401133A EP0878664A1 EP 0878664 A1 EP0878664 A1 EP 0878664A1 EP 98401133 A EP98401133 A EP 98401133A EP 98401133 A EP98401133 A EP 98401133A EP 0878664 A1 EP0878664 A1 EP 0878664A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- gaseous fluid
- shape
- grooves
- conduit
- 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.)
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Classifications
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- 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
- F23L17/16—Induction apparatus, e.g. steam jet, acting on combustion products beyond the fire
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
- F04F5/466—Arrangements of nozzles with a plurality of nozzles arranged in parallel
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- 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
- the invention relates to a part forming part of a gaseous fluid injection device to aid in drawing of a gaseous fluid transport system by evacuation, introduction or circulation, said part being intended to be positioned towards an extreme part of a section of chimney flue forming part of the device.
- the invention also relates to a device injection system and a gaseous fluid transport system to through a chimney flue, comprising such a device.
- Such a gaseous fluid transport system is for example used for the evacuation of air from ventilation, gases, fumes or combustion from industrial, working premises, residential or other.
- vacuum systems and of the aforementioned type comprising, towards the top of the natural draft pipe, means for driving a gaseous fluid promoting suction and rejection.
- These drive means are for example materialized by a air injection nozzle, the injected air being substantially in the axis of the conduit.
- the major drawback is that the opening of the duct is obstructed by means of entrainment of gaseous fluids such as nozzles.
- a disadvantage is that the additional air injected is bad oriented and difficult to control, which requires greater power.
- the object of the invention is therefore to improve the print compared to the prior art, whether this is natural or improved as a result of the presence of a static or stato-mechanical vacuum cleaner, or a dynamic vacuum cleaner.
- the invention also aims to obtain a more efficient result than the prior art, without substantially increase the complexity of the system implemented nor the power required or the cost of production.
- the invention relates to a part that is part of a device injection of gaseous fluid to aid in drawing a gaseous fluid transport system by evacuation, introduction or circulation, said part being intended for be positioned towards an extreme part of a section of chimney flue forming part of the device.
- the part is presented under the shape of a sleeve forming an interior passage for the gaseous fluid and comprising, a plurality of splines in hollow extending over its outer surface from an edge extreme free interior, up to a peripheral zone.
- the hollow grooves have the function of define, with the pipe section, channels for the introduction of the gaseous injection fluid.
- Said peripheral zone has the function of define with said section of conduit a space of collection of gaseous injection fluid.
- the piece has a first part in the shape of a crown, which defines the grooves and includes the area peripheral, and a second part forming a support, the first part being mounted on the second part.
- the interior and / or exterior section of the room is circular or polygonal.
- the internal shape of the part at least towards the inner free edge, generally cylindrical.
- the interior surface of the first part has a substantially cylindrical shape
- the inner surface of the second part has a substantially frustoconical shape, its large base being the further from the free edge.
- the external shape of the part at least towards the inner free edge, is generally tapered, the small base being towards the free edge, so that the extreme part of the grooves is inclined slightly by relative to the longitudinal axis of the part.
- the exterior surface of the first part has a substantially frustoconical shape, while the outer surface of the second part has a substantially cylindrical shape.
- the invention also relates to a device injection of gaseous fluid to aid in drawing a gaseous fluid transport system by evacuation, introduction or circulation, comprising a part such as above, and a section of chimney flue, arranged coaxially.
- Said chimney flue section includes a first portion coming next to and close to the external surface of the part comprising the grooves, so as to form channels for the introduction of the gaseous injection fluid; and a second portion, in gaze and moved away from the peripheral zone to form, between the corresponding external surface of the room and said second portion, an annular space, forming gaseous fluid collection chamber.
- At least one air introduction orifice is provided on the second portion, so as to lead into said bedroom.
- the first portion of the pipe section is extended, on the opposite side to the second portion, by a third portion, of form cylindrical or frustoconical.
- the device further comprises a fourth portion of duct, extending the second portion of the stretch of duct, on the side opposite the first portion.
- the invention relates to a transport system gaseous fluid by evacuation, introduction or circulation comprising a fluid injection device gaseous for the drawing aid, as mentioned above, the section of duct forming part of a main duct of fireplace.
- the first portion of the pipe section is surmounted by a portion of free duct, formed of a single holding with the pipe section.
- the free portion has a general shape substantially frustoconical, the large section of which is located on the side opposite the part, so that the system forms venturi.
- the device of gaseous fluid injection is arranged, relative to the direction of flow of the gaseous fluid to be discharged, towards upstream of the main duct.
- the system of the invention can also comprise a base, arranged upstream of the injection device for gaseous fluid and receiving a fixed part at less of the device.
- the second part of the play is introduced in the base with a slight clearance between them and is fixed rigid but removable from the base, for example by bolting, strapping or the like.
- the system can also include a room intermediate surrounding the injection device at least opposite the grooves.
- the intermediate piece is substantially adjacent and arranged downstream of the base.
- the system can have, spaced a certain distance from the end down the main duct, a static vacuum cleaner or stato-mechanical.
- Figure 1 shows a sectional view transverse of an embodiment of the piece of the invention.
- Figure 2 shows a sectional view cross-section of an embodiment of the transport of gaseous fluid of the invention, comprising the part of figure 1.
- FIG. 3 represents a schematic view in perspective corresponding substantially to the system of transport of gaseous fluid shown in Figure 2.
- Figure 4 shows a schematic view of the Figure 2 system, fixed on a flat roof of a building.
- This part 2 is intended to be part of a gaseous fluid injection device, referenced in 1 on Figures 2 and 3, for assistance in drawing a system of transport of gaseous fluid.
- fluid gaseous, natural air or any gas, or smoke from industrial, working, residential premises, etc.
- the part 2 is in the form of a sleeve 2 hollow, of longitudinal axis L, and forming a passage interior 2 'for the gaseous fluid.
- the sleeve 2 is formed by two hollow parts 2a, 2b, adjoining and coaxial.
- the first part 2a is formed by a surface interior 3 and an exterior surface 5, extending along the axis L.
- the inner surface 3 has a section constant transverse, substantially circular. She thus has a substantially cylindrical shape.
- the peripheral wall 4 of the sleeve has a certain thickness, not constant, along the axis L.
- the outer surface 5, opposite on the inner cylindrical surface 3 has a shape substantially frustoconical.
- the surface outer 5 is inclined relative to the surface interior 3, or relative to the longitudinal axis L, at an angle between about 5 ° and 30 °, and preferably around 10 °.
- This outer surface 5 is thus delimited on the one hand by an extreme free edge of small section, referenced in 5a, and on the other hand, by a large edge section, referenced in 5b.
- the outer surface 5 comprises, according to the direction L of the grooves 6, extending from the edge from small section 5a to a peripheral zone 5c, excluded, itself delimited by the edge of large section 5b.
- the grooves 6 are substantially axial in the present case. They can also be helical, or of any other form.
- the peripheral zone 5c is substantially smooth. We could also provide that it also includes splines 6.
- This peripheral zone 5c extends over approximately one quarter to one eighth, preferably 1 / 6th of the height - counted along the axis L- of the first part 2a, starting from the edge of the large section 5b.
- the grooves 6 are regularly arranged on the outer surface of the sleeve 2 around its axis L and are large enough to be substantially similar (see Figure 3).
- the second part 2b is adjacent and coaxial to the first, on the side opposite the edge of small section 5a.
- the second part 2b is adjoining the peripheral zone 5c by the edge 5b.
- the sleeve 2 is in one piece.
- first and the second parts 2a, 2b are separate and assembled rigidly to each other.
- the second part 2b presents, in the extension of the cylindrical inner surface 3, a interior surface 8 of the same shape over about a quarter to an eighth, and more specifically 1 / 6th, of its height - counted along the axis L- from edge 5b, then form substantially frustoconical.
- the large base 8b of this interior surface tapered 8 is farthest from the surface cylindrical 3 along the axis L.
- the small base 8a of this interior surface frustoconical 8 would thus correspond to the edge of the surface inner cylindrical 3.
- the surface frustoconical interior 8 of the second part 2b presents an inclination relative to the interior surface cylindrical 3, and therefore at the axis L, between approximately 10 ° and 40 °, in particular of the order of 25 °.
- the outer surface 9 of the second part 2b has a substantially circular section, of diameter greater than that of the outer surface 5 of the first part 2a.
- the outer surface 9 has a substantially cylindrical shape.
- the surface outer 9 has a radial offset 10 towards the exterior, relative to the exterior surface 5.
- This radial offset 10 thus substantially forms the boundary between the first and second parts 2a, 2b.
- This radial step 10 comprises means 10a allowing the attachment of an element such as a section of leads for example.
- the means 10a are materialized by at least one orifice, for example tapped, formed in the thickness of the second part 2b and extending substantially parallel to the axis L, from radial offset 10.
- This orifice is adapted to receive an element of substantially complementary shape, such as a screw.
- Figures 1 and 2 are also shown orifices 10b of the same type, extending substantially perpendicular to the L axis and adapted to receive by example a screw for fixing an additional part on the lower end of the second part 2b.
- the part 2 is for example made of metal.
- the part 2 which has just been described is intended for be recessed, with a slight play, inside a end part of a section of conduit 11a, as shown in Figures 2 and 3.
- This conduit lla is an integral part a main duct 11.
- the device 1 which comprises the part 2 and the section of conduit 11a, is arranged upstream of the conduit 11 which extends substantially vertically.
- main duct 11 can also be arranged in downstream of the main duct 11 or between two sections of aligned and coaxial ducts, forming the main duct 11.
- At least the first part 2a of part 2 comprising the grooves 6 is embedded inside the part end of the pipe section 11a.
- This assembly is carried out rigidly but removable, for example using bolts or strapping, or the like.
- the assembly is carried out so that part 2 extends coaxially with the pipe section 11a.
- the pipe section 11a comprises at least two portions 12, 14 whose walls, both internal and external, are substantially smooth and straight.
- the first portion 12 is opposite and close to the outer surface 5 of the part 2, comprising the grooves 6, so as to form channels for the introduction of a gaseous fluid, between two grooves adjacent.
- the second portion 14, adjoining the first 12, is opposite and removed from the peripheral zone 5c, so as to form between them an annular space forming a peripheral gas collection chamber 15.
- the second portion 14 forms an extreme part of the duct section 11a.
- the duct section 11a has a section substantially circular.
- the first portion 12 of the duct section 11a has a substantially frustoconical shape, the small base is located substantially opposite the free edge 5a of the part 2, and whose large base is located substantially opposite the limit between the grooves 6 and the zone device 5c.
- the second portion 14 of the section of conduit lla has a substantially cylindrical shape, a outward radial shoulder 12a forming the junction between the first 12 and the second 14 portions (see figure 2).
- the section of the second portion 14 is by consequent of dimension greater than that of the first serving 12.
- the space separating the second portion 14 of the first part 2a is larger than that separating the first portion of the first part 2a.
- the space between the first portion 12, respectively the second portion 14, and the part 2 can be adjusted by interposing shims (not shown) between the radial offset 10 and the free end 14a of the duct section 11a.
- the collection chamber 15 is in communication with air supply means 16, such as at least one pipe, connected to the second portion 14, via at least one orifice, opening into said chamber 15.
- air supply means 16 such as at least one pipe, connected to the second portion 14, via at least one orifice, opening into said chamber 15.
- the means air intake 16 are located substantially at the level of the radial offset 10.
- the section of conduit 11a is extended from the first portion 12, on the side opposite to the second portion 14, by a portion of free section 13.
- This free section portion 13 has a substantially frustoconical shape, of which the small section 13a adjoins the first portion 12 and the large section 13b is located on the opposite side from the part 2.
- the small section 13a is thus identical and combined with the small section of the first portion 12.
- At least part of the second part 2b of the part 2 is embedded in a hollow base 17, as shown in figure 2.
- This base 17 is for example made of alloy aluminum, of the "AG-S” type, molded or machined, or of a material plastic, such as for example polyvinyl chloride (“PVC”), or any other compatible material.
- PVC polyvinyl chloride
- the part 2 is fixed by rigid but removable from the base 17, for example by bolting or strapping or the like.
- This fixing is carried out for example by means orifices 10b.
- the gaseous fluid transport system of the invention thus includes the injection device 1, extended by the portion of free section 13, and disposed upstream of a main conduit 11; as well as the base 17.
- the base 17 is arranged upstream of the part 2 and therefore of the injection device 1.
- the base 17 has, at least on the side of the injection device 1, a substantially shaped section complementary to the section of the external surface 9 of the second part 2b.
- the base 17 has an interior surface 17a of substantially shaped constant and cylindrical.
- its outer surface 17b is also of substantially cylindrical shape, with the portion 17c not receiving part 2, of more section big.
- the additional gaseous fluid can thus be introduced into the light space via a hose communicating with an opening in the wall of the base 17, for example.
- This intermediate piece 18 surrounds the first part 2a of part 2 and at least the first portion 12 of the duct section 11a.
- the intermediate piece 18 surrounds, along the axis L, at least part of the portion of free section 13, the first portion 12, the second portion 14, at least part of the second part 2b of part 2, up to abutting against the base 17. It further extends coaxially with the pipe section 11a and the part 2.
- the intermediate piece 18 has two adjoining sections, of substantially cylindrical shape.
- One of the sections 18a, of wider section surrounds the section of conduit 11a, while the other section 18b, surrounds the second part 2b of room 2.
- the junction of the two sections 18a and 18b is performed at the radial offset 10.
- the system which has just been described comprises in addition in an embodiment where it has the function in particular the evacuation of the gaseous fluid, a vacuum cleaner static 19, shown diagrammatically in FIG. 2.
- This static vacuum cleaner 19 is mounted on the duct main 11 at its downstream end relative to the direction of circulation of gaseous fluids to be discharged, represented by the arrows F.
- a static vacuum cleaner such as 19, or a vacuum cleaner stato-mechanical or dynamic can be the subject of many variants.
- the static vacuum cleaner 19 is of the type comprising a lower part 20, upper part 21 coaxial of axis 22. These lower parts 20 and upper 21 are of revolution around this axis, and have a diameter identical or substantially the same exterior.
- the two lower parts 20 and upper 21 are separated from each other to provide a free space 23 having in axial section a general shape of venturi.
- the lower parts 20 and upper 21 are rigidly associated with each other, the along axis 22, by means of securing spacers reciprocal 24.
- the duct 11 can form a diffuser in the lower part 20.
- axis 22 is coaxial with the axis L. In other realizations not shown, axis 22 can be tilted slightly by relative to the L axis and relative to the vertical.
- the lower part 20 comprises, in the illustrated embodiment, an upper wall 26 and a bottom wall 27.
- Both the upper wall 26 and the lower wall 27 have a general frustoconical shape.
- the small base 28 of the upper wall 26 is turned towards the part upper 21 and space 23.
- the large base 29 of the wall upper 26 faces the conduit 11 and is common with the large base of the bottom wall 27 of which the small base faces the conduit 11.
- the upper part 21 has a lower wall 30 and an upper wall 31.
- the bottom wall 30 a in the embodiment shown, a general conical shape. In an other possible embodiment, the bottom wall 30 has a general frustoconical shape.
- the tip 32 or the small base of the wall lower 30 is turned towards the lower part 20, that is to say towards space 23.
- the large base 33 is quant opposite to duct 11.
- the upper wall 31 a in the embodiment shown, a general conical shape. In other embodiments, the upper wall 31 has a shape general frustoconical or hemispherical, or a form complex derived from the foregoing forms. Wall upper 31 has a large common base with the large base 33. It is therefore turned towards the lower part 20.
- the spacers 24 already mentioned are by example associated with the top wall 26 of the part lower 20 and to the lower wall 30 of the part upper 21.
- the vacuum cleaner 19 shown is static, it also enters part of the present invention that this vacuum cleaner is stato-mechanical type. In this case (not shown), the vacuum cleaner 19 also includes an integrated turbine.
- This turbine has its blades located in space 23 or in a space provided by the upper part 21.
- the vacuum cleaner 19 also has an adjoining ferrule 34 to the lower part 20, intended for fixing the vacuum cleaner 19 on the duct 11.
- the vacuum cleaner has a ferrule 34
- it can also be enlarged and form a shoulder for the downstream end of the conduit 11.
- the association of the shell 34 and the conduit 11, for their solidarity, can be ensured by means of fasteners such as clamps, bolts, etc.
- the duct 11 -or more precisely the portion free section 13- is an integral part of the vacuum cleaner static or stato-mechanical 19.
- the system can also include, upstream of the device 1, and more particularly upstream of the base 17 following the direction F of circulation of the gaseous fluid at reject - engine means intended to discharge the fluid gas towards the downstream end (not shown) of the duct main 11.
- the system shown in Figure 2 corresponds to a gaseous fluid transport system by evacuation.
- the gaseous fluid is thus evacuated naturally from upstream to downstream from main conduit 11 following the arrows F.
- the gaseous fluid is thus evacuated into space 23 formed between the lower 20 and upper 21 parts of the static vacuum cleaner 19.
- the gaseous fluid injection device 1 which is arranged upstream of the main conduit 11, allows the aid when drawing the natural gaseous fluid.
- an additional gaseous fluid is introduced, for example via the supply duct 16, to inside the collection chamber 15.
- This additional gaseous fluid is then routed in the main conduit 11 via the channels formed by means of the grooves 6 and formed between the first section portion 12 and the first part 2a of the part 2.
- This additional gaseous fluid is thus introduced inside the main duct 11, along the walls of the portion of free section 13, according to the arrows F1.
- the additional gaseous fluid is therefore introduced peripherally, not centrally, and will entrain the naturally evacuated gaseous fluid.
- the additional gaseous fluid can be injected through the grooves at a speed between about 20 and 160 meters per second, which considerably increases the speed of training initial gaseous fluid to be introduced or rejected.
- section portion free 13 of the conduit 11 has a completely different shape such than cylindrical for example.
- the lower walls 27, 30 26 and 31 have a general shape prismatic.
- the small base 28 of the wall upper 26 and, if applicable, the small base of the bottom wall 30, would have a section rectangular and not square, as is the case with regard to the vacuum cleaner 19.
- the device injection 1 which has just been described, is used for a evacuation system of gaseous fluids, we can provide that the latter is located outside a building, in rising on and above its roof.
- the base 17 is fixed rigidly to the roof, for example via a flashing, to seal this fastening.
- the flashing referenced at 35, is rigidly fixed to a terraced roof 36 of a building.
- a strain 37 surrounding the system of the invention with the exception of the vacuum cleaner 19-namely the base 17, the injection device 1 and the portion of free section 13-, is rigidly fixed to the flashing 35.
- This strain 37 is for example made in a prefabricated metallic material.
- the walls of the strain 37 are sufficiently removed from the system so as to leave a free space 38 between these and the system, to allow for example insulation from cold or hot drafts exteriors.
- This insulation is for example provided at using rock wool or the like attached to the interior walls of the strain 37.
- the flashing 35 will have a shape and a structure adapted.
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
Description
Claims (49)
- Pièce faisant partie d'un dispositif d'injection de fluide gazeux pour l'aide au tirage d'un système de transport de fluide gazeux par évacuation, introduction ou circulation, ladite pièce étant destinée à être positionnée vers une partie extrême d'un tronçon de conduit de cheminée faisant partie du dispositif,
caractérisée en ce qu'elle se présente sous la forme d'un manchon (2), ledit manchon (2) formant un passage intérieur pour le fluide gazeux et comportant, une pluralité de cannelures (6) en creux s'étendant sur sa surface extérieure (5), depuis un bord extrême libre intérieur (5a), jusqu'à une zone périphérique (5c) ;les cannelures (6) en creux ayant pour fonction de délimiter, avec le tronçon de conduit, des canaux pour l'introduction du fluide gazeux d'injection,ladite zone périphérique ayant pour fonction de délimiter avec ledit tronçon de conduit un espace de collecte du fluide gazeux d'injection. - Pièce selon la revendication 1, caractérisée en ce que les cannelures (6) sont axiales.
- Pièce selon la revendication 1, caractérisée en ce que les cannelures (6) sont hélicoïdales.
- Pièce selon l'une des revendications 1 à 3, caractérisée en ce que les cannelures (6) sont régulièrement disposées sur la surface extérieure (5) du manchon (2) autour de son axe (L).
- Pièce selon la revendication 4, caractérisée en ce que les cannelures (6) sont en nombre suffisamment important pour être sensiblement voisines.
- Pièce selon l'une des revendications 1 à 5, caractérisée en ce qu'elle comporte une première partie (2a) en forme de couronne, qui définit les cannelures (6) et comprend la zone périphérique (5c), et une deuxième partie (2b) formant support, la première partie étant montée sur la deuxième partie.
- Pièce selon l'une des revendications 1 à 6, caractérisée en ce qu'elle est monobloc.
- Pièce selon l'une des revendications 1 à 7, caractérisée en ce que la section intérieure et/ou extérieure de la pièce est circulaire.
- Pièce selon l'une des revendications 1 à 7, caractérisée en ce que la section intérieure et/ou extérieure de la pièce est polygonale.
- Pièce selon l'une des revendications 1 à 9, caractérisée en ce que la forme intérieure de la pièce est généralement cylindrique, au moins vers le bord extrême libre intérieur (5a).
- Pièce selon la revendication 10, caractérisée en ce que la surface intérieure (3) de la première partie (2a) a une forme sensiblement cylindrique, tandis que la surface intérieure (8) de la seconde partie (2b) a une forme sensiblement tronconique, sa grande base étant la plus éloignée du bord libre (5a).
- Pièce selon la revendication 11, caractérisée en ce que le degré d'inclinaison de la surface intérieure tronconique (8) par rapport à l'axe longitudinal (L) est compris entre 10° et 40°, notamment de l'ordre de 25°.
- Pièce selon l'une des revendications 1 à 12, caractérisée en ce que la forme extérieure de la pièce, au moins vers le bord extrême libre intérieur (5a), est généralement tronconique, la petite base étant vers le bord libre (5a), de manière que la partie extrême des cannelures (6) soit inclinée légèrement par rapport à l'axe longitudinal (L) de la pièce.
- Pièce selon la revendication 13, caractérisée en ce que la surface extérieure (5) de la première partie (2a) a une forme sensiblement tronconique, tandis que la surface extérieure (9) de la deuxième partie (2b) a une forme sensiblement cylindrique.
- Pièce selon l'une des revendications 6 à 14, caractérisée en ce qu'elle comporte, sur sa surface extérieure, un décrochement radial (10), formant la limite entre la première (2a) et la seconde (2b) parties.
- Pièce selon la revendication 15, caractérisée en ce que le décrochement radial (10) comporte des moyens permettant la fixation d'un tronçon de conduit.
- Dispositif d'injection de fluide gazeux pour l'aide au tirage d'un système de transport de fluide gazeux par évacuation, introduction ou circulation, caractérisé en ce qu'il comprend une pièce selon l'une des revendications 1 à 16, et un tronçon de conduit de cheminée (11a), disposés de manière coaxiale,ledit tronçon de conduit de cheminée (11a) comportant une première portion (12) venant en regard de et proche de la surface extérieure de la pièce (2) comportant les cannelures (6), de manière à former des canaux pour l'introduction du fluide gazeux d'injection ; et une deuxième portion (14), en regard et écartée de la zone périphérique (5c) pour former, entre la surface extérieure correspondante de la pièce et ladite deuxième portion (14), un espace annulaire (15), formant chambre de collecte du fluide gazeux ;au moins un orifice d'introduction d'air étant ménagé sur la deuxième portion (14), de manière à déboucher dans ladite chambre (15).
- Dispositif selon la revendication 17, caractérisé en ce qu'il comporte des moyens d'amenée d'air (16) communiquant avec la chambre de collecte (15) par l'orifice.
- Dispositif selon la revendication 17 ou 18, caractérisé en ce que le tronçon de conduit (11a) présente une section sensiblement circulaire.
- Dispositif selon l'une des revendications 17 à 19, caractérisé en ce que la première portion (12) du tronçon de conduit (11a) présente une forme sensiblement tronconique, dont la petite base est située sensiblement en regard du bord libre (5a) de la pièce (2), et dont la grande base est située sensiblement en regard de la limite entre les cannelures (6) et la zone périphérique (5c).
- Dispositif selon la revendication 19 ou 20, caractérisé en ce que la deuxième portion (14) du tronçon de conduit (11a) présente une forme sensiblement cylindrique, un épaulement radial (12a) vers l'extérieur formant la jonction entre la première (12) et la deuxième (14) portions.
- Dispositif selon l'une des revendications 17 à 21, caractérisé en ce que la première portion (12) du tronçon de conduit (11a) est prolongée, du côté opposé à la deuxième portion (14), par une troisième portion (13).
- Dispositif selon la revendication 22, caractérisé en ce que la troisième portion de tronçon (13) présente une forme cylindrique ou tronconique.
- Dispositif selon l'une des revendications 17 à 23, caractérisé en ce qu'il comporte en outre une quatrième portion de conduit, prolongeant la deuxième portion (14) du tronçon de conduit (11a), du côté opposé à la première portion (12).
- Système de transport de fluide gazeux par évacuation, introduction ou circulation, caractérisé en ce qu'il comporte un dispositif d'injection de fluide gazeux pour l'aide au tirage selon l'une des revendications 17 à 24, le tronçon de conduit (11a) faisant partie d'un conduit principal (11) de cheminée.
- Système selon la revendication 25, caractérisé en ce que la première portion (12) du tronçon de conduit (11a) est surmontée d'une portion du tronçon libre (13).
- Système selon la revendication 26, caractérisé en ce que la portion de tronçon libre (13) est formée d'un seul tenant avec le tronçon de conduit (11a).
- Système selon la revendication 26 ou 27, caractérisé en ce que la portion de tronçon libre (13) présente une forme générale sensiblement tronconique, dont la grande section (13b) est située du côté opposé à la pièce (2), de sorte que le système forme venturi.
- Système selon l'une des revendications 25 à 28, caractérisé en ce que le dispositif d'injection de fluide gazeux est disposé, par rapport au sens (F) de circulation du fluide gazeux à rejeter, vers l'amont du conduit principal (11).
- Système selon l'une des revendications 25 à 29, caractérisé en ce qu'il comporte en outre un socle (17), disposé en amont du dispositif d'injection de fluide gazeux (1) et recevant de manière fixe une partie au moins du dispositif (1).
- Système selon la revendication 30, caractérisé en ce que la deuxième partie (2b) de la pièce (2) est introduite dans le socle (17) avec un léger jeu entre eux.
- Système selon la revendication 30, caractérisé en ce que le socle (17) est réalisé en alliage d'aluminium du type "AG-S", moulé ou usiné, ou en matière plastique, telle que par exemple du Polychlorure de Vinyle ("PVC") ou tout autre matériau compatible.
- Système selon l'une quelconque des revendications 30 à 32, caractérisé en ce que la deuxième partie (2b) est fixée de manière rigide mais amovible au socle (17), par exemple par boulonnage, cerclage ou analogue.
- Système selon l'une quelconque des revendications 25 à 33, caractérisé en ce qu'il comporte en outre une pièce intermédiaire (18) entourant le dispositif d'injection (1) au moins en regard des cannelures (6).
- Système selon la revendication 34, caractérisé en ce qu'en position montée, la pièce intermédiaire (18) est sensiblement adjacente et disposée en aval du socle (17).
- Système selon l'une des revendications 25 à 35, caractérisé en ce qu'il comporte en outre, écarté à une certaine distance de l'extrémité avale du conduit principal (11), un aspirateur statique ou stato-mécanique (19).
- Système selon la revendication 36, caractérisé par le fait que l'aspirateur statique (19) ou stato-mécanique est du type comprenant une partie inférieure (20) et une partie supérieure (21), écartées l'une de l'autre et associées rigidement l'une à l'autre le long de l'axe du conduit principal (11), la partie inférieure (20) étant pourvue d'un trou de passage (25) du fluide gazeux à rejeter, en communication avec le conduit principal (11), ce trou débouchant dans l'espace existant entre la partie inférieure (20) et la partie supérieure (21).
- Système selon la revendication 37, caractérisé en ce que l'espace entre les parties inférieure et supérieure (20, 21) a, en section axiale, une forme générale de venturi.
- Système selon la revendication 37 ou 38, caractérisé en ce que l'aspirateur statique (19) ou stato-mécanique a une forme générale de révolution dont l'axe est dans le prolongement de celui du conduit principal (11) ou légèrement incliné par rapport à lui.
- Système selon la revendication 37 ou 38, caractérisé en ce que l'aspirateur statique (19) ou stato-mécanique a une forme générale allongée suivant une direction perpendiculaire à son axe (22), ce dernier étant dans le prolongement de celui du conduit principal (11) ou légèrement incliné par rapport à lui.
- Système selon l'une des revendications 37 à 40, caractérisé en ce que la partie inférieure (20) de l'aspirateur statique (19) ou stato-mécanique comprend au moins une paroi supérieure (26) de forme générale tronconique ou prismatique dont la petite base est tournée vers la partie supérieure (21), et dont la grande base est tournée vers le conduit principal (11).
- Système selon la revendication 41, caractérisé par le fait que la partie inférieure (20) comprend également une paroi inférieure (27) de forme générale tronconique ou prismatique dont la petite base est tournée vers le conduit principal (11), et la grande base vers la paroi supérieure (26).
- Système selon l'une des revendications 37 à 42, caractérisé par le fait que la partie supérieure (21) de l'aspirateur statique (19) ou stato-mécanique comprend au moins une paroi inférieure (30) de forme générale conique ou tronconique ou prismatique dont la pointe (32) ou la petite base est tournée vers la partie inférieure (20) et la grande base est opposée au conduit principal (11).
- Système selon la revendication 43, caractérisé par le fait que la partie supérieure (21) comprend également une paroi supérieure (31) de forme générale conique ou tronconique ou hémisphérique ou prismatique dont la grande base est tournée vers la partie inférieure (20).
- Système selon l'une des revendications 37 à 44, caractérisé par le fait que l'aspirateur comporte également une turbine intégrée, et forme un aspirateur stato-mécanique.
- Système selon la revendication 45, caractérisé par le fait que la turbine a ses pales situées dans l'espace existant entre les parties inférieure (20) et supérieure (21) ou celui ménagé par la partie supérieure (21).
- Système selon l'une des revendications 25 à 46, caractérisé en ce qu'il comporte en outre, en amont du dispositif d'injection (1), suivant le sens de circulation du fluide gazeux à rejeter, des moyens moteur destinés à refouler le fluide gazeux vers l'extrémité avale du conduit principal (11).
- Système selon l'une des revendications 25 à 47, caractérisé en ce qu'il comporte également des moyens pour filtrer et/ou traiter le fluide gazeux en circulation.
- Système selon la revendication 48, caractérisé en ce que les moyens pour filtrer et/ou traiter le fluide gazeux sont disposés en amont du dispositif d'injection de fluide gazeux (1), suivant le sens de circulation du fluide gazeux.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9705856A FR2763387B1 (fr) | 1997-05-13 | 1997-05-13 | Dispositif d'injection de gaz pour l'aide au tirage dans un systeme de transport de fluide gazeux |
FR9705856 | 1997-05-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0878664A1 true EP0878664A1 (fr) | 1998-11-18 |
Family
ID=9506834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98401133A Withdrawn EP0878664A1 (fr) | 1997-05-13 | 1998-05-12 | Dispositif d'injection de gaz pour l'aide au tirage dans un système de transport de fluide gazeux |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0878664A1 (fr) |
FR (1) | FR2763387B1 (fr) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3134345A (en) * | 1963-05-09 | 1964-05-26 | Wilfred J King | Combination incinerator and draft control apparatus |
FR2272341A1 (fr) * | 1974-05-23 | 1975-12-19 | Inst Pentru Creatie Stintific | |
US3978923A (en) * | 1975-10-14 | 1976-09-07 | Walker-Neer Manufacturing Co., Inc. | Injection sub for dual tube drilling |
US4171187A (en) * | 1977-07-28 | 1979-10-16 | Walker-Neer Manufacturing Co., Inc. | Air injection sub |
FR2502744A1 (fr) * | 1981-03-26 | 1982-10-01 | Bsf | Installation pour incinerer des ordures menageres et procede pour sa mise en oeuvre |
US4512264A (en) * | 1983-10-31 | 1985-04-23 | Crawford James P | Induced stack draft apparatus |
AU607079B2 (en) * | 1988-09-12 | 1991-02-21 | John Stanley Melbourne | Pneumatic device |
EP0617233A1 (fr) * | 1993-03-23 | 1994-09-28 | Mg Industries | Incinérateur avec système d'évacuation auxiliaire des gaz |
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 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2374591A1 (fr) | 1976-12-14 | 1978-07-13 | Amphoux Andre | Aspirateur statico-dynamique de fluides gazeux |
DE2730582A1 (de) | 1977-07-04 | 1979-01-11 | Borsig Gmbh | Kamin-duese |
FR2438795B2 (fr) | 1978-10-13 | 1986-04-04 | Amphoux Andre | Aspirateur statico-dynamique de fluides gazeux |
FR2514469B1 (fr) | 1981-10-13 | 1986-04-04 | Amphoux Andre | Dispositif aspirateur de fluide gazeux statique, dynamique et mecanique |
FR2518710B1 (fr) | 1981-12-18 | 1988-09-23 | Amphoux Andre | Aspirateur statique de fluide gazeux perfectionne |
DE3507245A1 (de) | 1985-03-01 | 1986-09-04 | Heinz 7801 Hartheim Heußner | Hilfsvorrichtung fuer entlueftungsanlagen und kamine |
FR2651563B1 (fr) | 1989-09-06 | 1991-12-27 | Amphoux Andre | Dispositif d'aspiration de gaz. |
FR2658271B1 (fr) | 1990-02-09 | 1995-01-06 | Andre Amphoux | Dispositif pour l'aspiration et le rejet de gaz ou fumees et installation comportant une pluralite de tels dispositifs. |
FR2709534B1 (fr) | 1993-09-03 | 1996-02-09 | Andre Amphoux | Dispositif statique/dynamique pour l'évacuation de fluide gazeux. |
FR2709533B1 (fr) | 1993-09-03 | 1995-11-03 | Amphoux Andre | Dispositif pour l'évacuation de fluide gazeux. |
-
1997
- 1997-05-13 FR FR9705856A patent/FR2763387B1/fr not_active Expired - Lifetime
-
1998
- 1998-05-12 EP EP98401133A patent/EP0878664A1/fr not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3134345A (en) * | 1963-05-09 | 1964-05-26 | Wilfred J King | Combination incinerator and draft control apparatus |
FR2272341A1 (fr) * | 1974-05-23 | 1975-12-19 | Inst Pentru Creatie Stintific | |
US3978923A (en) * | 1975-10-14 | 1976-09-07 | Walker-Neer Manufacturing Co., Inc. | Injection sub for dual tube drilling |
US4171187A (en) * | 1977-07-28 | 1979-10-16 | Walker-Neer Manufacturing Co., Inc. | Air injection sub |
FR2502744A1 (fr) * | 1981-03-26 | 1982-10-01 | Bsf | Installation pour incinerer des ordures menageres et procede pour sa mise en oeuvre |
US4512264A (en) * | 1983-10-31 | 1985-04-23 | Crawford James P | Induced stack draft apparatus |
AU607079B2 (en) * | 1988-09-12 | 1991-02-21 | John Stanley Melbourne | Pneumatic device |
EP0617233A1 (fr) * | 1993-03-23 | 1994-09-28 | Mg Industries | Incinérateur avec système d'évacuation auxiliaire des gaz |
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 |
Also Published As
Publication number | Publication date |
---|---|
FR2763387A1 (fr) | 1998-11-20 |
FR2763387B1 (fr) | 1999-07-23 |
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