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
  • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
  • F24F13/072—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser of elongated shape, e.g. between ceiling panels
• • 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
  • F24F13/24—Means for preventing or suppressing noise
• • 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
  • F24F13/26—Arrangements for air-circulation by means of induction, e.g. by fluid coupling or thermal effect

Definitions

• the invention essentially relates to a device for controlling the flow of a gaseous fluid having a high speed, in particular at least 10 m per second, at the inlet of the apparatus.
• high speed means a gaseous fluid velocity of at least 6 m per second.
• This apparatus is entirely satisfactory for performing an upstream-downstream pressure transfer to obtain a jet of fluid with a substantially constant range.
• This apparatus is also intended to operate with fluids having a low circulation rate.
• the present invention is on the contrary air conditioning devices that condition the air entering a room.
• the main object of the present invention is to solve the new technical problem of providing a device for controlling the flow of a gaseous fluid having a high speed, in particular at least 6 m / s better of at least 10 m / s, at the inlet of the device, capable of delivering downstream a gaseous fluid jet substantially or substantially substantially unidirectional, to minimize turbulence and noise.
• the main purpose of the invention is also to solve this new technical problem in a solution that allows great resistance to wide variations in temperature and fluid jet velocity while avoiding turbulence and noise as much as possible.
• the main purpose of the invention is also to solve these technical problems by ensuring a reinforced tightness in the apparatus during the circulation of this jet of gaseous fluid at high speed.
• the main purpose of the invention is to solve these technical problems regardless of the downstream fluid jet rate, whether the downstream opening of the apparatus is reduced or not.
• the present invention makes it possible to simultaneously solve all of these technical problems in a simple, reliable, usable on an industrial scale and in the context of the air conditioning of industrial or residential premises.
• the invention makes it possible to render the jet of fluid substantially or essentially unidirectional, that is to say that the vast majority of the jet of fluid has the same direction, in particular a direction substantially parallel to the longitudinal axial axis.
• the device which makes it possible to prevent the jet of fluid from impacting downstream the wall of the duct, generally made of sheet metal, thus generating turbulence and a lot of noise, and thus a loss of pressure, as can be seen when the fluid hits the inner duct of the device when the jet of fluid, in particular air, is multidirectional.
• the invention provides a device for controlling the flow rate of a gaseous fluid having a high speed, in particular at least 6 m / second, better still at least 10 meters per second, at the inlet apparatus, comprising an internal conduit for confining the gaseous fluid, having an upstream inlet and a downstream outlet of said fluid; and comprising a revolution envelope, deformable between a maximum opening section and a minimum opening section, mounted at said downstream outlet of said inner conduit; characterized in that it comprises, upstream of the casing, at least one lateral relaxation chamber, for example defined by two transverse partitions respectively spaced upstream and downstream, interconnected by a longitudinal side wall.
• This lateral relaxation chamber is in particular disposed substantially completely outside the profile of the internal confinement conduit, in a space provided between said inner conduit and an outer frame of the device.
• this relaxation side chamber has in particular the decisive technical advantages, not obvious to those skilled in the art, to deliver minimizing turbulence and noise of the air entering the room and traveling at high speed, particularly on disturbing frequencies , for example at 250 Hz. and to deliver, thanks to the structure of the apparatus according to the invention, downstream a jet of gaseous fluid that is substantially or substantially substantially unidirectional.
• this apparatus comprises at least one so-called sound dampening chamber upstream of the revolution envelope, at a distance from said envelope, or between two separate parts of said inner conduit and said envelope, in an integrated manner to said internal duct, in order to dampen the sounds generated by the speed of circulation of said fluid at high speed.
• this sound damping expansion chamber can be defined by at least two transverse partitions spaced respectively upstream and downstream, interconnected by a longitudinal side wall; optionally said expansion chamber comprises a plurality of orifices, preferably calibrated, provided at least in certain areas of said downstream transverse walls and upstream and lateral longitudinal, to allow a portion of the aforementioned gaseous fluid to come into contact with the outside.
• said inner conduit in particular in contact with a sound-insulating and / or sound-damping material disposed in a space provided between said inner conduit and an outer frame of the apparatus.
• this apparatus comprises at least one expansion chamber located upstream of the envelope in the vicinity thereof, or between said inner duct and said casing, either integrally with said inner duct in order to damp the sounds generated by the speed of circulation of said high velocity fluid.
• this sound damping expansion chamber can be defined by at least two transverse partitions spaced respectively upstream and downstream, interconnected by a longitudinal side wall; optionally said expansion chamber comprises a plurality of openings, preferably calibrated, provided at least in certain areas of the downstream transverse wall, to allow the passage of a portion of the aforementioned gaseous fluid outside the envelope, In particular, some of these orifices are positioned either in the wall beyond the location of fastening means of the collar of the envelope, or in the wall, at the level of the flange and / or in the means of fixing the flange. collar.
• the apparatus may comprise a revolution envelope having at rest for its maximum opening section a substantially cylindrical section.
• fluid stream rectifying means cooperating with said substantially cylindrical section of envelope at its downstream end.
• this apparatus may comprise a revolution envelope having at rest a substantially conical section. Thanks to the structure of the apparatus according to the invention, it is possible to minimize the turbulence and noise generated by a high speed of the gaseous fluid and, in addition, to deliver downstream a gaseous fluid jet that is substantially or substantially unidirectional, and thus to further limit turbulence and noise.
• substantially cylindrical envelope means in the context of the present description and the claims that the envelope is either cylindrical or has a small conical section, that is to say has a conical section or a conicity between 1 and less than 1.35.
• the apparatus is characterized in that the substantially cylindrical or conical envelope has a variable thickness between its upstream portion and its downstream portion decreasing from its upstream end to its downstream end.
• the casing has upstream attachment means providing a double seal on an internal frame of the device.
• the aforementioned fixing means comprise on the one hand an inside diameter of the casing slightly smaller than a prominent axial sleeve towards the substantially cylindrical fixing downstream, defining an axial open passage of the jet of fluid at high speed; and a lateral outer flange which is fixed on a transverse wall of the internal frame, by a fastening flange.
• the apparatus is characterized in that it comprises a plurality of orifices, preferably calibrated, provided at least in the downstream transverse wall, beyond the location fastening the flange of the casing, to allow the passage of a portion of the aforementioned gaseous fluid to achieve good ventilation outside the casing, thereby preventing condensation outside the casing; the membrane, whatever the climate.
• the apparatus is characterized in that it comprises means for varying the section of the aforementioned envelope at its downstream end.
• the means for varying the section of the deformable envelope at the downstream end comprise a control member external to the envelope which is either of fixed position to adjust a calibrated flow rate to the advance, that is to say variable position in order to calibrate the flow rate chosen on demand.
• the latter is characterized in that the means for varying the section of the aforesaid deformable envelope comprise at least two flattening elements arranged substantially diametrically opposite with respect to the axis of revolution of the aforementioned envelope.
• the flattening elements can be mounted in rotation along axes of rotation, and whose pivoting can be controlled manually or automatically.
• the flattening elements can be mounted to move at least partly in translation, for example by comprising at least one telescopic finger.
• the apparatus according to the invention it is characterized in that it comprises a substantially cylindrical or conical duct for confining the air jet upstream and, according to a particular embodiment variant , provided with a thermal and / or sound insulation upstream of the aforementioned deformable envelope.
• the apparatus comprises, upstream of the envelope, a transverse flow control element admitted into the apparatus, particular transversely disposed within the aforementioned confinement conduit comprising orifices preferably traversing calibrated throughout the section, which can be partially closed according to fixed or variable closure sections defined by a closure element having a section fixed or variable shutter so that when the envelope is in the maximum open position it is possible to calibrate the maximum flow rate of the fluid jet, thus allowing a flow rate adjustment with the same apparatus, thus realizing the design of a range of apparatus without modification of the construction of the structure of the apparatus.
• the apparatus is characterized in that, in order to compensate for a deficiency of fluid flow upstream, the apparatus comprises at least one opening on the downstream circuit relative to the aforementioned deformable envelope and a predetermined downstream distance thereof, so as not to substantially disturb the flow of fluid outside the membrane.
• the apparatus is characterized in that, when the envelope is substantially cylindrical, that is to say that said envelope can be either cylindrical, that is to say still present a ratio of the upstream internal diameter of the envelope to the downstream internal diameter of the envelope, in the rest and maximum opening position, of 1, which is slightly conical and then having a ratio of the inside diameter of the envelope to the internal diameter downstream of the envelope, in the position of rest and maximum opening, between 1.1 and less than 1.35.
• the apparatus is characterized in that the ratio of the upstream internal diameter of the envelope to the downstream internal diameter of the envelope, in the maximum rest and opening position, is at least 1, 35, and preferably is between 1.45 and 1.60.
• the angle ⁇ ( ⁇ ) at the top of the half-cone defined by the envelope formed for example by a membrane, and about 7 ° plus or minus 6 °, in particular 7 ° plus or less 2 °.
• the envelope is made of a self-supporting, flexible and deformable membrane, comprising or consisting of rubber, elastomer or similar material, having a Shore hardness of between 40 and 100, in particular between 50 and 80, and still more preferably between 50 and 60.
• the rectifying means of fluids fluid in particular air, comprise at least two support elements, substantially diametrically opposed at the downstream end of the membrane, making a support on the membrane sufficient to bend it towards the axis of the membrane, thus towards the axis XX of the apparatus, in order to straighten the fluid thread so that they are maintained substantially or essentially unidirectionally ideally substantially parallel to the axis of the membrane, therefore parallel to the axis XX of the apparatus.
• the invention relates to an installation for air conditioning at least one room, characterized in that it comprises at least one fluid flow control apparatus as defined above or as resulting from the following description with reference to the figures which form an integral part of the present invention.
• the invention also covers, as a new independently patentable product, a deformable revolution envelope, as an essential element for the manufacture of the apparatus as defined above or in the following description or of the installation as defined. previously or in the description next, characterized in that it has at rest for its maximum opening section a substantially conical section, and a variable thickness between its upstream portion and its downstream portion decreasing from its upstream end to its downstream end, in particular such as defined in the description and the claims.
• the ratio of the upstream internal diameter of the envelope to the downstream internal diameter of the envelope, in the rest and maximum opening position is at least 1.35, and preferably is between 1.45 and 1.60.
• the angle ⁇ ( ⁇ ) at the top of the half-cone defined by the envelope, formed for example by a membrane is about 7 ° plus or minus 6 °, in particular 7 ° plus or less 2 °.
• the control of a flow rate of gaseous fluid advantageously air, circulating at high speed, that is to say at least 6 m and better still at least 10 m per second, in a safe and reliable manner to minimize turbulence and noise while further ensuring the emission downstream of the apparatus of a substantially or substantially unidirectional fluid jet, while minimizing turbulence and noise .
• a substantially unidirectional fluid jet makes it possible to prevent the fluid from coming into contact with the duct wall, generally made of sheet metal, prematurely, that is to say not before at least 3 or 4 m of the blowing orifice of the apparatus, distance at which the speed of the jet of fluid has reduced and the noise generated by the passage of the fluid at high speed becomes minimum.
• FIG. 1 is an exploded perspective view of a first embodiment, currently preferred, of the apparatus for controlling a gaseous fluid circulating at high speed, comprising an expansion chamber according to the present invention, and a membrane of flexible, deformable revolution;
• FIG. 2 represents a longitudinal axial section view in the assembled state of the apparatus according to the invention shown in FIG. 1;
• FIG. 3 is a detailed, enlarged representation of the longitudinal axial section at the level of the chamber; detent according to the invention and the membrane of revolution; in the state mounted on an axial sleeve for fixing said casing and with a fixing flange on a downstream transverse wall of the internal structure of the apparatus by a fixing flange;
• FIG. 4 shows, in longitudinal axial section along the section line IV-IV of Figure 2, thus shifted by 90 ° with respect to the longitudinal axial section of Figure 3, on the one hand of the expansion chamber with another embodiment of a revolution envelope according to the invention of greater conicity than that of Figure 3; this taper being of the order of 1.5 between the upstream diameter and the downstream diameter of the membrane; and on the other hand dashed another embodiment of a revolution envelope according to the invention formed by a substantially cylindrical membrane, in association with rectifying fluid thread means at its downstream end.
• FIG. 5 represents another embodiment of an apparatus according to the invention comprising, with respect to the embodiments of FIGS. 1 to 3 and 6, means for adjusting the variation of the section of the deformable envelope showing a almost closed position of the envelope, comprising a control member outside the variable position envelope, for example by being telescopic type.
• FIG. 6 represents the embodiment of an apparatus according to the invention represented in FIGS. 1 to 3, according to which the above-mentioned deformable envelope is provided, externally with it, with means for variation of its automatically controlled section, comprising flattening elements rotatably mounted in at least one, here two, appropriate axes of rotation and whose pivoting can be controlled in this embodiment in an automated manner with a cam system controlled by a motor ;
• FIG. 7 represents a longitudinal axial section similar to FIG. 3 at the level of the expansion chamber according to the invention, showing an alternative embodiment of the airflow bypass orifices on the downstream transverse partition of said expansion chamber; , on which is fixed the membrane, at the fastening means and in particular the collar of the membrane; and
• FIG. 8 also shows a longitudinal axial section similar to Figure 3 showing a second embodiment of an expansion chamber according to the invention upstream and away from the aforementioned envelope; and in this mode this chamber being combined with a second expansion chamber positioned near the envelope to ensure its ventilation.
• FIG. 10 a first embodiment of an apparatus according to the invention, this apparatus being represented by a general reference number (10).
• the apparatus (10) according to the invention performs the flow control of a gaseous fluid (represented by the arrow F), having a high speed, in particular at least 6 m / s, more preferably 10 m / s, at the entrance to the device.
• a gaseous fluid represented by the arrow F
• This apparatus comprises an internal conduit (40) for confining the gaseous fluid F, having an upstream inlet and a downstream outlet of said fluid; and comprising an envelope of revolution (50), deformable between a maximum opening section and a minimum opening section, and is characterized according to the invention in that it comprises, upstream of the envelope (50), at least one lateral expansion chamber (70), for example defined by two transverse partitions spaced respectively upstream (66) and downstream (64), interconnected by a longitudinal side wall (68), According to another embodiment of the apparatus according to the invention, represented at least in FIGS. 1 to 7, the latter is characterized in that it comprises at least one expansion chamber (70) situated upstream of I '.
• this expansion chamber can be defined by two transverse partitions spaced respectively upstream (66) and downstream (64), interconnected by a longitudinal side wall (68).
• said expansion chamber comprises a plurality of holes (72), preferably calibrated, provided in the downstream transverse wall (64) to allow the passage of a portion of the aforementioned gaseous fluid outside the envelope ( 50), to provide ventilation outside the casing, in particular these orifices (72) are positioned either in the wall (64) beyond the location (64a) of means (54) for fixing the casing (64).
• this apparatus is characterized in that said envelope has a conical or substantially conical section.
• said envelope (50) has at rest and for its maximum opening section a conical section clearly visible in Figures 1 to 3 and 6, as well as the other embodiments in solid lines of Figures 4 and 5.
• the envelope (50) has a substantially cylindrical section, FIG. 4 in broken lines.
• the substantially cylindrical or conical envelope (50) has a variable thickness between its upstream portion (51) and its downstream portion (52). ), decreasing from its upstream end (51) to its downstream end (52).
• the envelope (50) has upstream fixing means (54) providing a double seal on an internal frame (60).
• the above-mentioned double-sealing means (60) comprise on the one hand an upstream inner diameter of the casing (50) slightly smaller than one end per substantially cylindrical fixing sleeve (62) defining an axial opening. (63) best seen in Figure 3, passing the jet of fluid at high speed; and a lateral outer flange (56) being fixed to a transverse partition (64) of the inner frame (60).
• the longitudinal lateral partition (68) is situated outside the collar (56) of the aforementioned envelope (50) and upstream of the downstream wall (64) for fixing the envelope. (50), at a distance sufficient to allow the provision of the above-mentioned orifices (72) to be provided, allowing the passage of a derivative portion F D of the fluid, and thus to provide good ventilation outside the envelope ( 50).
• the apparatus (10) is characterized in that it comprises means 180 (FIG. and 6) or 280 (Fig. 5) for varying the section of the envelope (50) at its downstream end (52),
• the means (180, 280) for varying the section of the deformable envelope (50) at the level of the downstream end (52) comprise a member (190, 192, 282, FIG. ) which is either of fixed position to adjust a calibrated flow rate in advance, or preferably of variable positions, for example by being provided rotatably mounted (Fig. 1, 2, 3 and 6) or displaceable in translation, for example telescopically (280, Rg. 5), in order to calibrate the flow rate chosen on demand.
• the means (180) for varying the section of the deformable envelope (50) above comprise at least two flattening elements (182, 184) arranged substantially diametrically opposite to the axis of revolution of the aforementioned envelope which coincides here with the longitudinal axis (XX) of the apparatus .
• the flattening elements (182, 184) are rotatably mounted according to one or preferably two rotational axes (186), mounted here on a flange (160), itself fixed here on the downstream transverse partition (64) as shown and clearly visible in Figures 1 and 6, perpendicular to the longitudinal axis XX of the apparatus.
• the flange also includes through-holes (161) of the type and opposite the orifices (72), for the passage of fluid FD bypass to ventilate the membrane (50) to the outside.
• the flattening elements (182, 184) have, at their downstream end, a notch (183, 185) of suitable bottoms to allow, in the flattening position, to leave an axial portion of the membrane (50) completely flattened, to leave an axial passage to the fluid.
• the pivoting of the flattening elements (182, 184) can be controlled manually or automatically, for example by combining a cam system (190) of suitable shape, visible in FIG. 6, mounted on a rotation shaft (192). ) itself operated by a motor outside the apparatus (not shown), the flattening elements being naturally pulled towards each other by means of at least one traction means (194), such as a spring. It is understood that the force of the traction means (194), such as a spring, and the shape of the cam make it possible to achieve a flattening of the membrane (50) almost complete, if desired.
• traction means (194) such as a spring
• FIG. 4 represents: a) firstly, in continuous lines, another embodiment of an envelope (50) of revolution according to the invention of greater conicity than that of FIG. 3; this taper being of the order of 1.5 between the upstream diameter (51) and the downstream diameter (52) of the membrane; and b) on the other hand, according to yet another particular embodiment of the invention, in broken lines, a substantially cylindrical envelope (50A) between its upstream end (SiA) and its downstream end (52A), in association with means (400) fluid straighteners at its downstream end, also shown in broken lines, it will be observed that in this case the thickness of the substantially cylindrical membrane may be substantially constant from upstream to downstream, as shown, or decrease from upstream to downstream as in the other embodiments shown, on the other hand, the presence of the fluid rectifier means 400 can be advantageously maintained when the membrane (50A) has a small conicity, that is to say ie a taper between 1 and less than 1.35.
• the fluid stream rectifying means in particular air, may comprise, according to an alternative embodiment, at least two bearing elements (402), substantially diametrically opposed at the level of the downstream end (52A) of the membrane (50A), providing sufficient support on the downstream end (52A) of the membrane to bend it towards the axis of the membrane, thus towards the axis XX of the device (as clearly visible in Figure 4), in order to straighten the fluid streams to be maintained substantially or substantially unidirectional, ideally substantially or substantially parallel to the axis of the membrane, therefore parallel to the axis XX of the apparatus . It is also understood that even when the closure downstream of the membrane (50) is almost complete as shown in FIG.
• the fluid, for example air, Fp, at the exit of the membrane are substantially or essentially unidirectional streams.
• Fp for example air
• the apparatus is characterized in that it comprises a conduit (40) substantially cylindrical or conical confinement of the air jet upstream and preferably provided with an insulation (42) thermal and / or phonic upstream of the deformable envelope (50), in the space (43) existing between the conduit (40) or the membrane (50), and the outer wall (11) of the apparatus (10).
• the apparatus comprises, upstream of the casing (50), a transverse element (44) of admitted flow rate adjustment.
• the apparatus in particular arranged transversely inside said containment duct (40) comprising through-holes (46), preferably calibrated, over the entire section, which can be partially closed in fixed sections or variables defined by a shutter member (48) having a fixed or variable shutter section, for example in the form of a solid disk here of fixed section but of which the production of various solid disks of different sections mounted according to the flow rates and intended destinations, so that when the envelope (50) is in the maximum open position, it is possible to calibrate the maximum flow rate of the fluid jet F, thus allowing a flow rate adjustment with the same apparatus (10), thereby realizing in turn the design of a range of devices without modification of the construction of the structure of the apparatus.
• the apparatus (10) comprises at least one minus an opening (196) on the downstream conduit or sheath (111) relative to the deformable envelope (50) and at a predetermined downstream distance thereof, so as not to substantially disturb the flow of fluid at the periphery of the membrane downstream of the membrane (50), in order to allow the induction of surrounding fluid, in particular the air of a room in which the apparatus is installed, as indicated by the arrow FA in particular in FIGS. 3 and 6.
• the apparatus is further characterized in that the ratio of the upstream internal diameter of the envelope to the downstream internal diameter of the envelope (50) in the maximum open position and at least 1.35 and preferably is between 1.45 and 1.60.
• the envelope is made by a membrane comprising or consisting of rubbers, elastomers or similar materials, having a Shore hardness of between 40 and 100, preferably between 50 and 80, and even better between 50 and 80. and 60.
• a membrane comprising or consisting of rubbers, elastomers or similar materials, having a Shore hardness of between 40 and 100, preferably between 50 and 80, and even better between 50 and 80. and 60.
• the deformable membrane is fixed by its upstream portion (51) on the one hand in a sealed manner at the downstream end of the duct (40) forming at its downstream end the sleeve ( 62) of a diameter greater than the diameter of the upstream portion of the casing (50), so as to provide a first sealing means, and secondly fixed by its flange (56) is directly against the transverse wall downstream (64), preferably as represented by means of a fastening flange (160) in the form of a disc having an axial opening (162), on two opposite edges of which are fixed by appropriate blades (162, 164), using the axes of rotation (186), the flattening means (180) comprising the flattening flaps (182, 184).
• the fixing flange (160) also comprises through-holes (161) of the type and opposite the orifices (72) visible in FIGS. 3 and 6 in particular.
• the apparatus is characterized in that it comprises at least one expansion chamber (170) called damping of the sounds upstream of the revolution envelope (50), remote from said envelope, or between two separate parts of said inner conduit (40) and said envelope (50), or integrally with said inner conduit, as shown here, to dampen the sounds generated by the speed of circulation of said fluid at high speed;
• this sound damping expansion chamber (170) can be defined by at least two transverse partitions respectively spaced respectively upstream (166) and downstream (164), connected between them by a longitudinal lateral partition (168); and optionally said expansion chamber comprises a plurality of holes (172), preferably calibrated, provided in at least some areas of said downstream (164) and upstream (166) and longitudinal (168) lateral walls, to allow in contact with a part of the aforementioned gaseous fluid outside said internal duct, in particular in contact with a thermal and / or sound damping sound insulation material (42) arranged in the space (43) between said inner conduit and an outer frame (1
• this expansion chamber (170) can be combined with an expansion chamber (70) disposed near the envelope (50) as described in FIGS. 1 to 7, and whose description applies completely and is not reproduced here.
• the invention also relates to an installation for air conditioning at least one room, characterized in that it comprises at least one fluid flow control apparatus (10) as previously defined.
• the invention also covers, as a new independently patentable product, the deformable membrane (50), as an essential element for the manufacture of the apparatus as defined in the description or the installation as defined in the description, characterized in that it has at rest for its maximum opening section a substantially conical section, and a variable thickness between its upstream portion and its downstream portion decreasing from its upstream end to its downstream end, advantageously such that defined in the present description.
• the deformable membrane (50) as an essential element for the manufacture of the apparatus as defined in the description or the installation as defined in the description, characterized in that it has at rest for its maximum opening section a substantially conical section, and a variable thickness between its upstream portion and its downstream portion decreasing from its upstream end to its downstream end, advantageously such that defined in the present description.
• a flow rate of gaseous fluid advantageously air flowing at high speed, that is to say at least 6 m / s or better. at least 10 m / s, in a safe and reliable manner to minimize turbulence and noise as well as to ensure the emission downstream of the apparatus of a substantially or substantially unidirectional fluid jet as represented by the arrows Fp thus making it possible to prevent the fluid from coming into contact with the inner wall of the duct defined here by the inner edge of the insulation (143) of the external wall (11) of the apparatus or of a duct ( 111) ending in the room to be air conditioned.
• a closure element (210) comprising an axial orifice (212) of oblong shape. or flattened, with side edges (213, 214) rounded to conform to the shape of the membrane (50) when the latter is in a flattened position.
• the invention makes it possible to minimize turbulence and noise and to obtain a unidirectional fluid jet FP whatever the operating conditions of the apparatus, as well as the characteristics of the fluid used, especially air, whether at low temperature or at high temperature, depending on the season or climate.
• the sealing of the system is provided by the sealing means 54.
• the membrane is easily dismountable thanks to the fastening system shown in Figures 1 to 8.
• the fluid jet is unidirectional, it is possible to reduce the size of the duct downstream while ensuring that in no case the jet of fluid, particularly air, at high speed can not come into contact with the internal wall of the apparatus or duct downstream, and whatever the set point of adjustment, in particular also thanks to the presence of at least one aforementioned relaxation chamber. It will be understood that in the context of the invention, it is ensured that the fluid jet FP has a trajectory substantially parallel to the blowing axis X-X.
• the air threads F P are always substantially or essentially parallel to the axis of the apparatus XX. Moreover, when the membrane (50) conveys very cold air, there is a risk of condensation during the first minutes of operation.
• the invention provides for a deflection of a fluid jet portion F, represented by the arrows FD, outside the membrane, by passing through at least one lateral expansion chamber ( 70) and in the lateral orifices (72) and (57) and (161), which makes it possible to use the apparatus according to the invention at all latitudes and even in a humid atmosphere, by eliminating the condensate pan and the drain piping previously required.
• the membrane (50) is ventilated externally with air at the same hygrometry and at the same temperature as the air circulating inside the membrane (50).
• the inner containment conduit (40) is insulated by a thermal and / or sound insulating material (42) filling the gap (43) created between the inner conduit (40) and the outer sheath or frame such as (11), conventional apparatus, as previously described.
• the material used for the insulation will naturally be calculated according to the environment where the system will be installed.
• the thickness of the membrane is designed to be self-supporting, flexible, deformable and have the best possible shape recovery.
• the hardness of the membrane is provided indicated with a Shore hardness between 40 and 100, preferably between 50 and 80 and more preferably between 50 and 60.
• the thickness of the membrane may vary depending on the material used for its construction.
• the thickness upstream of the membrane for a device having an air flow rate of 200 m 3 / s, will be between 3 and 5 mm; and its thickness downstream will be between 2 mm and 4 mm.
• the thickness of the membrane and the decrease in thickness between the upstream end and the downstream end can be varied within wide limits depending on the intended applications.

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• Engineering & Computer Science (AREA)
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• General Engineering & Computer Science (AREA)
• Air-Conditioning For Vehicles (AREA)
• Air-Flow Control Members (AREA)

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