EP4184069A1 - Halterung zur befestigung eines drehturms zur extraktion eines fluidstroms, system zur extraktion eines fluidstroms und verfahren zur steuerung - Google Patents

Halterung zur befestigung eines drehturms zur extraktion eines fluidstroms, system zur extraktion eines fluidstroms und verfahren zur steuerung Download PDF

Info

Publication number
EP4184069A1
EP4184069A1 EP22208259.6A EP22208259A EP4184069A1 EP 4184069 A1 EP4184069 A1 EP 4184069A1 EP 22208259 A EP22208259 A EP 22208259A EP 4184069 A1 EP4184069 A1 EP 4184069A1
Authority
EP
European Patent Office
Prior art keywords
extraction
pressure
annular body
measurement site
flow
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.)
Pending
Application number
EP22208259.6A
Other languages
English (en)
French (fr)
Inventor
Florian Bouis
Marc SANCHEZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VTI SAS
Original Assignee
VTI SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VTI SAS filed Critical VTI SAS
Publication of EP4184069A1 publication Critical patent/EP4184069A1/de
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F2007/001—Ventilation with exhausting air ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/40—Pressure, e.g. wind pressure

Definitions

  • the invention relates to a mounting bracket and a turret for extracting a flow of fluid from a masonry extraction duct.
  • the invention relates more broadly to the field of aeraulics and the extraction of gas flows such as the extraction of air or stale gases from the aeraulic installation of a building.
  • Stale air can correspond to humid air that can be found, for example, in bathrooms or kitchens.
  • the extraction of stale gas can also relate to a flow of gas loaded with CO2, formaldehyde, radon or any other waste gas resulting from human activity.
  • the fixing support and the ventilation turret according to the invention are more particularly intended for the ventilation of buildings constructed before 1982 and which have masonry ventilation ducts. These ventilation ducts are porous and become leaky when the depressions generated by the ventilation system exceed 80 Pa.
  • so-called "classic" controlled mechanical ventilation known by the acronym "VMC” provides ranges of depression ranging up to 300 Pa.
  • VMC classic controlled mechanical ventilation
  • the document EP 3 348 922 describes a method for regulating the speed of rotation of a fan for extracting stale air from an installation comprising a plurality of extraction ducts. This process aims to regulate the speed of rotation of the fan of the extraction turret according to the pressure measured upstream of the fan.
  • the terms upstream and downstream are defined with respect to the direction of circulation of the gas flow in the pipe considered.
  • the term “pressure” is interpreted in its relative sense, it notably makes it possible to designate a depression generated by the fan with respect to atmospheric pressure.
  • an air extraction turret coupled to a suction horn is usually used.
  • the suction pavilion also acts as a mounting support for the extraction turret on the outlet of the air extraction duct bricked.
  • the extraction turret consists of an air extraction chamber in which is placed a motorized fan mounted on a stator.
  • the extraction turret also comprises electronic means for controlling the speed of rotation of the fan as a function of the pressure measured at the outlet of the extraction duct.
  • the suction pavilion is a rudimentary junction piece which comprises a lower part in the form of a fixing base surmounted by a ferrule which enters the extraction chamber.
  • the ferrule may have a conical, frustoconical or flared shape. Thus, the air flow is directed towards the fan of the extraction turret.
  • the shroud constitutes a spacer which generates a spacing between the lower wall of the fan and the suction mouth. Air in excess pressure relative to the pressure of the gas flow extracted from the duct can then rush into the fan from the external environment. This also leads to a loss of extraction yield.
  • the ventilation ducts generally lead to openings of parallelepipedal shape which has a rectangular cross section.
  • the inventors have observed that the pressure at the outlet of these outlets is not always uniform at the same time t depending on whether the pressure measurement is made on the long side or on the short side of the rectangular section.
  • the invention aims to overcome all of these drawbacks.
  • the invention aims to provide a technical solution making it possible to carry out precise pressure measurements at the outlet of the outlet of the masonry extraction duct.
  • the invention aims to provide a technical solution which allows the construction of a mathematical model such as a curve, to follow the evolution of the pressure in the extraction duct upstream of the fan.
  • the invention aims more particularly to provide a mounting support for an extraction turret which makes it possible to reduce the airflow disturbances observed by the inventors.
  • the invention proposes a solution for improving the attachment of an air extraction turret to a masonry extraction duct outlet.
  • the invention aims to improve the efficiency of an air extraction turret. More particularly, the invention aims to improve the extraction of air at low pressure (depression of 80 Pa), for example, for masonry extraction ducts of buildings constructed before the 1980s.
  • the invention also aims to provide an air extraction turret configured to be mounted on a masonry extraction duct outlet of an old building.
  • the invention aims to improve the method for regulating the ventilation speed of the fan of an air extraction turret.
  • the invention aims to provide an effective solution for the rehabilitation of old buildings and in particular as regards their stale air extraction ducts.
  • the fixing support is characterized in that it comprises, on the one hand, at least one pressure measurement site which is positioned at the level of the internal edge between the upper face and the lower face of the annular body, the pressure measurement site making it possible to measure the pressure of the fluid flow flowing through the central opening, and on the other hand, an aeraulic disturbance reducer arranged at the level of the internal edge close to the pressure measurement site , the aeraulic disturbance reducer making it possible to reduce fluctuations in the value of the pressure measured at the pressure measurement site.
  • the aeraulic disturbance reducer makes it possible to provide on the wall of the internal edge a parietal zone which is protected from the disturbances generated by the extraction fan and/or the deviation of the parietal flow of the flow of fluid within the extraction duct bricked.
  • This parietal zone is on the other hand exposed to the overall flow of the fluid flow such as a flow of stale air, the measurement site is positioned in this parietal zone, where it is possible to carry out reliable successive measurements allowing the establishment of a mathematical model of flow and pressure.
  • the disturbance reducer makes it possible to reduce fluctuations in the value of the pressure measured at the pressure measurement site.
  • the air disturbance reducer may be formed by a curvature which extends at the level of the internal edge, the pressure measurement site being disposed at the level of the convex curvature of the edge internal, the curvature extends, on the one hand, longitudinally and convexly between the upper face and the lower face of the annular body, the curvature being convex with respect to a longitudinal axis B-B around which the annular body extends radially , and secondly, radially at least partially around the central opening, preferably, the curvature extends radially in all radial sections of the inner edge.
  • the curved character of the internal edge makes it possible to reduce the disturbances surrounding the pressure measurement site which is positioned in a determined parietal zone of the internal edge.
  • the convex curvature may comprise an apex which defines a narrowing of a diameter of the central opening, the convex curvature widening respectively on either side of the apex in order to increase the diameter of the central opening towards the lower face and the upper face of the annular body.
  • the flared character of the curvature on either side of the apex makes it possible to deflect the disturbances without disturbing the general flow of the flow of stale air.
  • the pressure measurement site is arranged between the apex and the lower face of the annular body. Indeed, in this parietal zone, the disturbances linked to the deviation of the parietal air flow from the exhaust duct and the disturbances linked to the rotation of the fan are both eliminated.
  • the pressure measurements are thus more precise. In fact, it is possible to establish a mathematical model of the evolution of the flow and of the pressure in order to regulate the speed of rotation of the fan. In fact, it is possible to optimize the stale air extraction process at low pressure (depression of 80 Pa) for masonry extraction ducts in buildings built before the 1980s.
  • the mounting bracket may comprise at least two measurement sites, the two measurement sites being distant radially by at least 30°.
  • the extraction ducts having outlets generally of parallelepipedal shape with a rectangular cross-section, the pressure measured on the long side and the short side is not always the same.
  • having two radially spaced measurement sites makes it possible to average the pressure to estimate the real value of the pressure at the outlet of the extraction duct.
  • the average pressure measured at a time t at each measurement site makes it possible to obtain more reliable and representative measurements of the pressure in the extraction duct.
  • the measurement site may include a pressure sensor flush with a wall of the inner edge.
  • the measurement site may comprise a channel flush with the wall of the internal edge, the channel conveying the flow of fluid towards a pressure sensor offset with respect to the fixing support.
  • the annular body can be made of concrete or of a metallic material.
  • the fixing support comprises an insert embedded in the concrete, the insert forming the channel which conveys the flow of fluid towards the sensor of pressure.
  • the insert may comprise at least two projecting lugs which are embedded in the concrete in order to prevent the insert from rotating on itself.
  • the upper face of the annular body can be planar. However, more generally the upper face of the annular body may have a shape complementary to the shape of the fan in order to be adjusted to the latter.
  • the annular body comprises an annular sealing element which extends around the periphery of the central opening, the sealing element projects from the annular body, at the level , from the junction between the inner edge and the upper face.
  • the sealing element makes it possible to adjust the upper face of the annular body to the ventilation system in order to limit the entry of external air flow into the extraction duct.
  • the underside of the annular body is textured. This allows better adhesion of the glue or of a coating to the underside of the fixing support when the fixing support is secured to the outlet of a masonry extraction duct.
  • the annular body is delimited laterally by a peripheral edge which has an inclined portion which is equipped with means for fixing the extraction turret.
  • the extraction system of the invention comprises a suspended fan whose annular disc which constitutes its underside is fitted to the fixing support. Positioning the fan directly at the opening of the mounting bracket makes it possible to limit the entry of outside air flow into the extraction duct on which the extraction system is mounted. This makes it possible to improve the extraction of air at low pressure, to reduce external aeraulic disturbances. This makes it possible to maximize yields. An energy gain of factor 5 can thus be generated on the energy consumption of the fan.
  • the extraction system integrates the fixing support of the first aspect of the invention and benefits from its technical advantages which make it possible to provide precise and reliable homogeneous pressure measurements making it possible to control the regulation speed of the fan.
  • the fixing support and the extraction system and the regulation method make it possible to provide an effective solution for extracting stale air or gas from old buildings which include a masonry extraction duct.
  • the invention relates to a support 10 for fixing a turret 20 for extracting a fluid flow from a conduit 30 for extracting a fluid flow from the wall. More particularly, the mounting bracket 10 makes it possible to secure the turret 20 for extracting a flow of fluid to an extraction outlet 31 of a masonry extraction duct for a flow of fluid.
  • the invention finds a more particular application in the extraction of gases such as the extraction of air from a building, in particular the stale air of a building.
  • Stale air in a building is likened to humid air from a bathroom or kitchen. It is also possible to extract a flow of stale gas loaded with CO2, formaldehyde, radon or any other waste gas resulting from human activity.
  • the mounting bracket 10 comprises an annular body 100.
  • the annular body 100 which extends radially around a longitudinal axis BB.
  • the annular body 100 can be made of concrete or of a metallic material.
  • the annular body 100 has a central opening 101.
  • the central opening 101 forms a passage allowing a flow of fluid 62 to flow, such as an air flow (see figure 9 ).
  • the annular body 100 has an internal edge 102 which radially delimits the central opening 101. Consequently, the internal edge 102 delimits the diameter of the central opening 101.
  • the internal diameter of the central opening 101 can be between 250mm and 500mm.
  • the internal diameter of the central opening 101 can also be between 270 mm and 350 mm.
  • the annular body 100 has a lower face 103.
  • the lower face 103 defines a first assembly interface with an outlet 31 of an extraction conduit 30 built.
  • the lower face 103 is configured to be secured to the outlet 31 of the extraction duct 30 built.
  • the lower face 103 is flat.
  • the lower face 103 is secured to the outlet 31 of an extraction duct 30 by chemical means such as glue or by mortar.
  • the lower face 103 of the annular body 100 can also be textured.
  • the textured character of the lower face 103 makes it possible to retain the glue or mortar. This generates a more resistant assembly interface between the fixing support 10 and the outlet 31 of the extraction duct 30.
  • the textured lower face 103 is particularly useful when the annular body 100 is made of concrete.
  • the underside 103 of an annular body 100 made of metal can also be textured.
  • the annular body 100 has an upper face 104.
  • the upper face 104 is opposite the lower face 103.
  • the upper face 104 defines a second assembly interface.
  • the second assembly interface makes it possible to assemble the mounting bracket 10 with the air extraction turret 20 .
  • the upper face 104 is flat.
  • the upper face 104 can take any other form complementary to the fan 200 of the extraction turret 20.
  • the annular body 100 is delimited laterally by a peripheral edge 105.
  • the peripheral edge 105 has a first portion 106 which extends perpendicularly with respect to the lower face 103 of the annular body 100.
  • the annular body 100 comprises a second portion 107 which extends in an inclined manner between the first portion 105 and the upper face 104.
  • the first portion 106 extends between the lower face 103 and the second portion 107.
  • the inclination of the second portion 105 confers, on the annular body 100, a frustoconical shape which is particularly visible to figure 3 And 4 .
  • the second portion 107 comprises means 108 for fixing the extraction turret 20.
  • the fixing means 108 comprise at least one bore formed in the annular body 100.
  • the fixing means 108 may comprise several bores formed in the annular body 100 at the level of the second portion 107.
  • each bore may comprise a threaded insert which is integral with the annular body 100.
  • the threaded insert is embedded in the concrete.
  • the internal edge 102 extends between the upper face 104 and the lower face 103 of the annular body 100.
  • the internal edge 102 has a high end at the junction with the upper face 104 and a low end at the junction with the underside 103.
  • the terms "top” and “upper” and their derivatives, when used specifically with reference to the mounting bracket 10, designate the upper part of the mounting bracket 10 which is delimited by its face superior 104.
  • bottom and lower as well as their derivatives, when they are used specifically with reference to the fixing support 10, designate the lower part of the fixing support which is delimited by its lower face 103 .
  • the internal edge 102 has a curvature which extends longitudinally and convexly between the upper face 104 and the lower face 103.
  • the curvature of the internal edge 102 is convex with respect to the longitudinal axis B-B.
  • the curvature is also convex with respect to the direction of flow of the airflow in the central opening 101.
  • the curvature extends radially at least partially around the central opening 101. In this configuration, the curvature does not extend over the entire radial extent of the inner edge 102.
  • the curved portion of the inner edge 102 forms progressively radially, from a first planar part of the inner edge 102, towards the apex or a radial plateau of the curvature before gradually reducing or flattening towards a second planar part of the inner edge 102.
  • the curvature extends radially over the entire internal edge 102. According to this preferred configuration, the curvature extends radially in all radial sections of the internal edge 102.
  • This convex curvature has an apex 110 which defines a narrowing of a diameter of the central opening 101.
  • the apex 110 is determined by the intersection between a tangent T passing through the apex 110 of the curve, and a plane X which is transverse to the annular body 100.
  • the plane X defines a line of transverse curvature for which the diameter of the central opening 101 is minimal. The diameter corresponds to a constriction of the central opening 101.
  • the convex curvature widens on either side of the apex 110 in order to increase the diameter of the central opening 101.
  • the curvature between the apex 110 and the lower face 103 is widens in the direction of the lower face 103, the curvature extending in a direction from top to bottom.
  • the curvature flares out between the apex 110 and the upper face 104 in the direction of the upper face 104, the curvature extending in a direction from bottom to top.
  • the curvature flares out on either side of the plane X.
  • the diameter of the central opening 101, at the level of the lower end and the upper end of the central opening 101 is greater than the diameter of the central opening 101 at the level of the apex 110.
  • the diameter of the central opening 101 at the level of the low end or the high end of the central opening 101 can be greater by 3% to 10% compared to the minimum diameter of the central opening.
  • the diameter of the central opening 101 at the low end or at the high end of the opening center 101 can also be 4% to 7% greater than the minimum diameter of the central opening 101.
  • the annular body 100 comprises a sealing element 111.
  • the sealing element 111 is annular and extends around the periphery of the central opening 101.
  • the sealing element 111 projects of the annular body 100, at the level of the junction between the internal edge 102 of the upper face 104.
  • the sealing element 111 is here formed by a collar.
  • the sealing element 111 can be made of the same material as the annular body 100. According to this configuration, the sealing element 111 can be cast with the annular body 100 in concrete or melted with the annular body 100 in metal. . However, it is also possible to make the sealing element 111 in another material such as a rigid or elastic polymeric material. In this case, the sealing element 111 is chemically secured to the annular body 100.
  • the mounting bracket 10 comprises at least one pressure measurement site 40 .
  • the measurement site 40 is positioned at the inner edge 102 between the upper face 103 and the lower face 104 of the annular body 100.
  • the measurement site 40 is disposed on a wall of the inner edge 102, therefore, the measurement site 40 can be qualified as a parietal pressure measurement site.
  • the measurement site 40 overlooks the central opening 101 and makes it possible to measure the pressure of the flow of fluid which flows within the central opening 101 at the outlet of the masonry evacuation duct.
  • the mounting bracket 10 comprises an a Vogellic disturbance reducer placed at the level of the internal edge 102 and close to the measurement site 40.
  • the aeraulic disturbance reducer makes it possible to obtain more reliable pressure measurements by allowing a reduction in fluctuations of the value of the pressure measured at the level of the measurement site 40.
  • the inventors can thus define a model of evolution of the flow rate and of the pressure which makes it possible to regulate the speed of rotation according to the measured pressure.
  • the airflow disturbance reducer is constituted by the convex curvature of the internal edge 102.
  • the pressure measurement site 40 is arranged at the level of the convex curvature of the internal edge 102.
  • the pressure measurement site 40 emerges at the level of the wall of the convex curvature.
  • the pressure measurement site 40 is disposed on a portion of the inner rim 102 which has a convex curvature.
  • the pressure measurement site 40 is preferably arranged between the apex 110 and the lower face 103 of the annular body 100.
  • the pressure measurement site 40 is thus located in the lower part of the internal edge 102.
  • the lower part of the internal edge 102 extends below the plane X.
  • the mounting bracket 10 may comprise at least two pressure measurement sites 40 .
  • two measurement sites 40 are radially separated by an angle ⁇ whose value is at least 30°.
  • the value of the angle ⁇ can be between 30° and 330°.
  • the angle ⁇ has a value of 90°.
  • the two measurement sites 40 are arranged on the same plane which is parallel to the X plane and located below the X plane.
  • the measurement site 40 comprises a channel 41 flush with the wall of the inner edge 102.
  • the channel 41 conveys the flow of fluid towards a pressure sensor remote with respect to the fixing support 10.
  • the annular body 100 comprises a notch 113.
  • the notch 113 is formed radially in the peripheral edge 105 of the annular body 100. The notch 113 makes it possible to connect, directly or via an intermediate pipe 42, the channel 41 to the pressure sensor.
  • the measurement site 40 can also include a pressure sensor flush with a wall of the internal edge 102.
  • the notch 113 allows the electrical connection of the pressure sensor.
  • the notch 113 protects the electrical connection of the pressure sensor or the aeraulic connection of channel 41.
  • the channel 41 can be formed by an insert 410 which is embedded in the concrete.
  • the insert 410 comprises a hollow body which extends longitudinally between two open ends.
  • the insert 410 includes a through hole 411 which extends between each end of the insert 410.
  • a first end of the insert 410 includes a sleeve 412 whose outside diameter is smaller than the outside diameter of the hollow body.
  • the sleeve 412 is open, when the insert 410 is arranged radially in the annular body 100, the sleeve 412 makes it possible to capture the flow of fluid circulating at the level of the central opening 101.
  • a second end of the insert 410 comprises a connector 413.
  • the connector 413 here has an outer diameter greater than the outer diameter of the hollow body.
  • the connector 413 protrudes at the level of the notch 113.
  • the connector 413 is also open in order to convey, directly or indirectly, for example via a pipe 42, the flow of fluid to the pressure sensor.
  • the connector 413 can include an adapter in order to be connected to the pressure sensor or the pipe 42.
  • the connector 413 may also include a thread accessible from the outside of the mounting bracket 10, via the notch 113.
  • the insert 410 has at least two projecting lugs 414 .
  • the two lugs 414 are integral with the hollow body and extend on either side of the hollow body in two opposite directions.
  • the two lugs 414 prevent the rotation of the insert 410 on itself. For example, this prevents the insert 410 from rotating in a vacuum when a pipe 42 is coupled to the connector 413.
  • annular body 100 can be formed by an assembly of several arcuate modules which are butted together to form the annular body 100.
  • the modules in an arc of a circle are delimited by a joining line 112 placed between each module in an arc of a circle.
  • the fixing means 108 comprise as many fixing bores as the annular body 100 comprises modules in an arc of a circle.
  • the annular body 100 is formed by six modules in an arc of a circle. According to one embodiment of the invention, only the arcuate modules that carry a pressure measurement site 40 have a curvature at the internal edge 102. According to this embodiment, the arcuate modules that do not do not carry a pressure measurement site have a flat inner edge 102 .
  • the annular body 100 can be made of concrete or of metal by being cast in its mass.
  • the invention also relates to a system 11 for extracting a flow of fluid mounted on a masonry extraction duct 30 of a flow of fluid.
  • a masonry extraction duct 30 makes it possible to evacuate a flow of stale air.
  • the extraction system 11 comprises a mounting bracket 10 according to the invention.
  • the fixing support 10 makes it possible, through a first assembly interface, as described above, to secure the extraction system 11 to the outlet 31 of the extraction duct 30 built in stone.
  • the fixing support also comprises a pressure measurement site 40 which makes it possible to measure the pressure of the fluid flow at the outlet of the extraction duct 30 built in stone.
  • the extraction system 11 includes a fan 200 fitted to the second assembly interface of the mounting bracket 10.
  • the fan 200 can be a centrifugal jet fan.
  • the fan 200 comprises a rotor comprising a rotation shaft 201 which is driven via transmission means by a motor 202.
  • the motor 202 is positioned above the fan 200 and held in position by a plate 203
  • the plate 203 extends in a plane parallel to the plane X of the fixing support.
  • the plate 203 can be considered as an element of a frame of the extraction turret 20.
  • the rotation shaft 201 is arranged along the axis BB.
  • the rotor of the fan 200 comprises a solid disc 204 which delimits the rotor from above.
  • Solid disc 204 extends parallel to plate 203.
  • the rotor also includes an annular disc 205.
  • Annular disc 205 is opposite solid disc 204 and delimits the rotor below.
  • the annular disc 205 has an opening which makes it possible to suck the flow of fluid from the extraction duct. In practice, it is the rotor which is fitted to the second assembly interface of the fixing support 10. In the example illustrated in figure 2 And 3 , the fan 200 is suspended so that the annular disc 205 is fitted to the upper face 104 of the mounting bracket 10.
  • the fan 200 is suspended from the plate 203 through its rotation shaft.
  • the annular disc 205 and the upper face 104 are planar and have complementary dimensions such as the radial width of the annular disc 205 and of the upper face 104 of the annular body 100.
  • the sealing element 111 makes it possible to optimize the performance of the fan 200.
  • the sealing element 111 is fitted to the internal radial edge of the annular disc 205.
  • the sealing element 111 makes it possible to prevent air from being overpressured, with respect to the flow of fluid evacuating through the duct extraction 30, rushes into the extraction conduit 30 passing between the fan 200 and the mounting bracket 10.
  • the flow of fluid is evacuated laterally by the rotor.
  • the rotor comprises blades 206 which extend radially from the rotation shaft 201 to the outer periphery of the rotor.
  • the outer circumference of the rotor is defined by the respective outer edges of the annular disc 205 and of the solid disc 204.
  • the outer circumference of the rotor is open in order to allow the radial evacuation of the flow of fluid as illustrated in figure 9 .
  • the frame of the turret 20 also includes a side grille 207 which protects the fan 200 laterally.
  • the lateral grid 207 more particularly protects the blades 206 of the fan 200.
  • the lateral grid 207 extends peripherally to the outer periphery of the rotor.
  • the side grid 207 is integral with the plate 203 in order to form the frame of the extraction turret 20.
  • the extraction turret 20 also includes a cover 208 which protects the motor 202.
  • the cover 208 extends above the plate 203 and provides a chamber around the motor 202.
  • the cover 208 also secured to the plate 203.
  • the cover 208, the plate 203 and the side grid 207 are attached together with the same mechanical fastening system 209.
  • the grid 207 can include one or more handles 210 to facilitate installation and manipulations of the extraction turret 20.
  • the side grid 207 comprises fixing lugs 211 which are secured to the fixing support 10.
  • the fixing lugs 211 are secured to the peripheral edge 105 of the annular body 100.
  • the fixing lugs 211 cooperate with mechanical components such as screws to couple the side grid 207 to the fixing means 108 of the annular body 100.
  • the extraction turret 20 is secured to the fixing support 10 through the fixing lugs 211 of the side grid 207.
  • the extraction turret 20 comprises electronic means.
  • the electronic means may comprise a processor, a memory and an electronic clock which are configured in particular to store data but also to store and execute algorithms such as a fan control algorithm 200 which may correspond to a method for regulating the speed of the fan.
  • the electronic means also include a pressure sensor which is connected to the pressure measurement site 40 of the mounting bracket 10. In practice, the electronic means control the rotational speed of the fan 200 in proportion to the pressure measured by the pressure sensor. pressure.
  • the electronic means can be embedded in the extraction turret 20 for example under the cover 208 or be remote within a control panel.
  • the control panel can be fixed to an exterior wall of the extraction duct 30.
  • the extraction turret 20 also includes a power supply 212 of electrical energy.
  • the power supply 121 is formed by a sheathed electrical cable which exits from the base of the cover 208 of the extraction turret 20.
  • the power supply 212 connects the extraction turret 20 to a source of electrical energy such as a collective electrical energy distribution network.
  • a source of electrical energy such as a collective electrical energy distribution network.
  • the power supply 212 can connect the 202 motor to a control panel in which the electronic means are arranged, in this case, the electronic means can control the electric power supply of the motor 202.
  • the fixing support 10 makes it possible to reduce the air turbulence which occurs at the level of the measurement site 40.
  • the extraction system 11 also participates in the reduction of turbulence, in particular through the cooperation between the fan 200 and mounting bracket 10.
  • FIG 9 illustrates an extraction system 11 according to the invention. Turbulence is noted in the same way as on the figure 8 to improve the understanding of the technical effect of the invention compared to the state of the art.
  • the walls of the inner edge 102 are equipped with an air disturbance reducer.
  • this disturbance reducer is formed by the convex curvature of the internal edge 102 with respect to the axis BB as described above.
  • the diagram of the figure 9 shows the effect of the convexity of the internal rim 102 on the disturbances that the inventors have identified in the systems of the state of the art ( figure 8 ).
  • the disturbances due to the deviation of the air flow which runs along the walls of the extraction duct (illustrated by the arrows 61) are deflected by the convexity on the inner edge 102 towards the axis BB which passes through the center of the exhaust duct 30 of air.
  • the disturbances generated by the rotation of the fan 200 propagate less downwards in the central opening 101.
  • the convexity of the internal edge 102 makes it possible to create a parietal zone 70 which is exposed to the general flow of the flow of evacuation fluid without being exposed to disturbances from the ventilator or from diversion of parietal fluid flow.
  • the parietal zone 70 is illustrated by a dotted rounded rectangle.
  • the parietal zone 70 is arranged under the plane X passing through the apex 110 of the internal edge 102.
  • the position of the parietal zone 70 may be different depending on the conformation of the airflow disturbance reducer.
  • the measurement site 40 is placed on the internal edge 102 in this parietal zone 70.
  • the point of emergence of the measurement site 40 is thus placed in a zone exposed only to the flow of air extracted from the extraction pipe 30.
  • the mounting bracket 10 comprises two measurement sites 40 of pressure.
  • the invention also relates to a method 80 for regulating the speed of rotation of the fan 200 of the extraction turret 20, the extraction turret 20 being mounted on the extraction duct 30 of a flow of masonry fluid.
  • the regulation method 80 comprises a step of measuring the pressure 81 of a flow of fluid which flows in the extraction duct 30 built in stone. As shown in figure 2 And 9 , the measurement is carried out at the outlet of the masonry extraction duct 30 at the level of at least one pressure measurement site 40 .
  • the pressure measurement site 40 is parietal of the inner edge 102 of the mounting bracket 10. More particularly, the measurement site 40 is arranged in a parietal zone 70 in which the air disturbances are reduced by the disturbance reducer of the mounting bracket 10.
  • the regulation method 80 also comprises a step 82 in which the speed of rotation of the fan 200 is adjusted according to the pressure measurement carried out at the level of the pressure measurement site 40 .
  • the fixing support 10 comprises two or more measurement sites 40
  • an average of the pressures measured at the same instant t by the two measurement sites 40 is taken.
  • the measurement is carried out by a pressure sensor which then transmits the measured data to the electronic means of the extraction turret 20 which process them in order to control the fan 200 according to the measured pressure and/or the calculated pressure average.
  • There average of the measurements taken for each pressure measurement site 40 makes it possible to obtain a more reliable pressure measurement at a time t.
  • the electronic means proportionally adjust the speed of rotation of the fan 200 according to the pressure which has been measured and/or calculated.
  • the speed of rotation of the fan 200 is adjusted by the electronic means which act on the motor 202.
  • PID derivative integral proportional function also called PID.
  • the regulation method renews 83 the measurement 81 of pressure and the proportional adjustment 82 of the rotational speed of the fan 200 continuously in order to optimize the extraction of the flow of fluid from the extraction conduit 30 built. For this purpose, an average over time of the measurements can be performed to more precisely adjust the rotational speed of the fan 200.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Earth Drilling (AREA)
EP22208259.6A 2021-11-19 2022-11-18 Halterung zur befestigung eines drehturms zur extraktion eines fluidstroms, system zur extraktion eines fluidstroms und verfahren zur steuerung Pending EP4184069A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2112274A FR3129462B1 (fr) 2021-11-19 2021-11-19 Support de fixation d’une tourelle d’extraction d’un flux de fluide, système d’extraction d’un flux de fluide et procédé de régulation

Publications (1)

Publication Number Publication Date
EP4184069A1 true EP4184069A1 (de) 2023-05-24

Family

ID=80225744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22208259.6A Pending EP4184069A1 (de) 2021-11-19 2022-11-18 Halterung zur befestigung eines drehturms zur extraktion eines fluidstroms, system zur extraktion eines fluidstroms und verfahren zur steuerung

Country Status (2)

Country Link
EP (1) EP4184069A1 (de)
FR (1) FR3129462B1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2782781A1 (fr) * 1998-09-02 2000-03-03 Andre Amphoux Dispositif de securite pour systemes d'evacuation de fluides gazeux
DE20011105U1 (de) * 2000-06-23 2000-09-21 Gebhardt Ventilatoren Dachventilator
FR2911671A1 (fr) * 2007-01-19 2008-07-25 Sarl Mvn Sarl Dispositif d'assistance mecanique pour l'evacuation de flux gazeux plus particulierement destine a un ensemble habitable
FR3021099A1 (fr) * 2014-05-13 2015-11-20 Soler & Palau Res Sl Caisson de ventilation
EP3348922A1 (de) 2017-01-11 2018-07-18 Vti Abluftgebläsesteuerung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2782781A1 (fr) * 1998-09-02 2000-03-03 Andre Amphoux Dispositif de securite pour systemes d'evacuation de fluides gazeux
DE20011105U1 (de) * 2000-06-23 2000-09-21 Gebhardt Ventilatoren Dachventilator
FR2911671A1 (fr) * 2007-01-19 2008-07-25 Sarl Mvn Sarl Dispositif d'assistance mecanique pour l'evacuation de flux gazeux plus particulierement destine a un ensemble habitable
FR3021099A1 (fr) * 2014-05-13 2015-11-20 Soler & Palau Res Sl Caisson de ventilation
EP3348922A1 (de) 2017-01-11 2018-07-18 Vti Abluftgebläsesteuerung

Also Published As

Publication number Publication date
FR3129462B1 (fr) 2023-12-08
FR3129462A1 (fr) 2023-05-26

Similar Documents

Publication Publication Date Title
EP0842398B1 (de) Einzelstrahlflüssigkeitsströmungsmesser mit vergrössertem drehmoment
FR3016654B1 (fr) Turbomachine a prelevement de flux d'air comprime
EP3343122B1 (de) Lufteinlass oder -auslass
FR2730007A1 (fr) Machine a ecoulement radial
EP4184069A1 (de) Halterung zur befestigung eines drehturms zur extraktion eines fluidstroms, system zur extraktion eines fluidstroms und verfahren zur steuerung
EP2452130B1 (de) Rohr mit kreisquerschnitt und einem luftflussregler
EP3587743A1 (de) Vorrichtung zum kühlen eines turbotriebwerkgehäuses
EP3343120A1 (de) Luftabsaug- oder -einblasöffnung
FR2901580A1 (fr) Rotor prefectionne et eolienne
WO2022023663A1 (fr) Amplificateur de debit a effet coanda et dispositif aeraulique comprenant un tel amplificateur de debit
WO2022175622A1 (fr) Systeme generateur de portance et bateau muni d'un tel systeme
CA2631115C (fr) Turbine pour compteur de fluide, en particulier d'eau
FR2918721A1 (fr) Appareil de controle de debit de fluide gazeux.
FR2572140A1 (fr) Ventilateur
EP3343121A1 (de) Luftabsaug- oder -einblasöffnung
EP3190346A1 (de) Relais-verbindungsvorrichtung für zwangsbelüftungsanlage, diese umfassendes relais-verbindungssystem und zwangsbelüftungsanlage, die mit diesen systemen ausgestattet ist
CH414353A (fr) Installation de pompage
EP2472126B1 (de) Verdichter mit Antrieb und verstellbarer, aerodynamischer Geometrie
FR2846033A1 (fr) Machine tournante du type ou pompe de tesla
FR2926129A1 (fr) Dispositif et procede de regulation d'un ventilateur et extracteur hybride d'air vicie equipe d'un tel dispositif
FR2499686A1 (fr) Dispositif de ventilation pour appareils menagers, en particulier pour fours de cuisson
EP1431856A1 (de) Messkanal in Verbindung mit einem motorbetätigten Durchfluss-Regelventil und einem Füllstandsensor
EP1500877B1 (de) Ventilationsluftabzugvorrichtung auf Dächern oder Gebäudefassaden
FR3066235B1 (fr) Ventilateur centrifuge d'extraction d'air a basse pression.
FR2997712A1 (fr) Manchon de raccordement

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230530

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20231019

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR