EP1448896B1 - Zentrifugalturbine für atemhilfevorrichtungen - Google Patents

Zentrifugalturbine für atemhilfevorrichtungen Download PDF

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Publication number
EP1448896B1
EP1448896B1 EP02803822A EP02803822A EP1448896B1 EP 1448896 B1 EP1448896 B1 EP 1448896B1 EP 02803822 A EP02803822 A EP 02803822A EP 02803822 A EP02803822 A EP 02803822A EP 1448896 B1 EP1448896 B1 EP 1448896B1
Authority
EP
European Patent Office
Prior art keywords
turbine
wheel
stator
blades
rotor
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.)
Expired - Lifetime
Application number
EP02803822A
Other languages
English (en)
French (fr)
Other versions
EP1448896A1 (de
Inventor
Hossein Nadjafizadeh
Philippe Perine
Pascal Liegeois
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.)
Mallinckrodt Developpement France SAS
Original Assignee
Mallinckrodt Developpement France 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 Mallinckrodt Developpement France SAS filed Critical Mallinckrodt Developpement France SAS
Publication of EP1448896A1 publication Critical patent/EP1448896A1/de
Application granted granted Critical
Publication of EP1448896B1 publication Critical patent/EP1448896B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/06—Helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers

Definitions

  • the invention relates to motorized turbines intended for the production of a continuous flow of air and more particularly the turbines equipping the respiratory assistance devices, as defined in the preamble of claim 1.
  • Such a turbine is known from the DE document. -A-2,053,562.
  • These respiratory assistance devices can be provided for treating sleep apnea disorders.
  • devices comprising a breathing mask applied to the nose and / or the mouth of a user during his sleep and a housing supplying air at overpressure to the mask so as to prevent user to enter apnea phase.
  • the known respiratory assistance devices generally propose to deliver a continuous stream, regulated or not, air through a turbine driven in rotation by an electric motor. This air flow is conveyed by a pipe into the mask which further comprises a calibrated leakage orifice, the desired pressure is thus maintained.
  • patent FR 2,663,547 describes such a device.
  • This document refers to an installation for the continuous supply of respiratory gas overpressure comprising a calibrated orifice respirator and an overpressure gas supply unit connected by a pipe to the mask.
  • a centrifugal type turbine driven by an electric motor is provided to generate an air flow.
  • a respiratory assistance device is intended, most of the time, for home use. It must therefore be easily transportable and compact in order to be placed at the foot of the patient's bed or on a bedside table.
  • the object of the invention is to overcome these disadvantages of the prior art by providing a more compact motor-turbine assembly, allowing the realization of respiratory assistance devices of reduced size.
  • the subject of the invention is an electric turbine as defined in claim 1.
  • One of the stator or motor rotor may be a permanent magnet, and at least one of the stator or motor rotor may be a toroidal winding.
  • turbine rotor shaft can be mounted on at least one bearing coaxial with the annular intake duct and on at least one bearing located in the engine housing.
  • the stator body of the turbine may comprise two parts cooperating with each other and delimiting the toric compression chamber.
  • the blades may be carried by an overmolded wheel forming a sleeve on the turbine rotor shaft, said sleeve may comprise a shoulder for axial support of the motor rotor.
  • Said wheel carrying the blades may also be frustoconical.
  • These blades carried by the wheel may be formed of a flat wall fixed perpendicularly to the surface of the wheel, this wall having a generally trapezoidal shape and having a greater height in the central part of the wheel than in its peripheral part. .
  • some of said blades may comprise, in their portion disposed in the central portion of the wheel, a projecting nose designed to conform to the shape of the annular intake duct.
  • one blade out of two comprises such a protruding beak.
  • some of said blades form an angle of 5 to 60 degrees with the radius of the wheel passing through the end of the blade, at the periphery of the wheel.
  • the turbine 1 shown in FIGS. 1, 2 and 3 comprises an upper body 2 assembled to a lower body 3 defining between them a volume in which a vertical shaft 4 mounted on two bearings 13, 14, a toric magnet 5, an O-coil 6, a wheel 7 carrying blades.
  • the upper body 2 has a cup shape comprising an inner annular skirt 16 (on the side of the lower body 3) coaxial with said cup and intended to form a motor housing and a half-ring wall 22 located on the periphery of the cup .
  • the lower body 3 has a hollow shape bounded by a first annular wall 17 connected to a second conical wall 18 flaring upwardly and connected itself to a connecting wall 19 having an arcuate section.
  • the annular wall 17 surrounds a hub 20 for mounting the bearing 13, said hub 20 being rigidly positioned coaxially with the annular wall 17 by three fixed blades 21 connecting the inside of the annular wall 17 to the outside of the hub 20 and arranged at 120 ° from each other.
  • the upper 2 and lower 3 bodies are formed to form, once assembled, an internal volume characteristic of a centrifugal turbine, in particular, the walls 19, 22 of the upper body 2 and lower 3 define a toric compression chamber 12.
  • This chamber 12 is open to the outside via a substantially cylindrical tangential duct 25 (towards the user's mask) whose longitudinal axis is horizontal.
  • the assembly of the upper body 2 and lower 3 is made sealingly at a joint plane 8.
  • the pins 9 emerging from the lower body 3 at the joint plane 8 are arranged to be introduced into corresponding holes practiced in the upper body 2, thus ensuring the rigorous positioning of one body relative to the other. Maintaining the assembly is achieved by means of a series of screws 10 arranged regularly around the joint plane.
  • the lower body 3 comprises a hub 20 placed coaxially inside the annular wall 17 and adjusted so that a first bearing 13 intended to support the vertical shaft 4 fits there to be rigidly fixed.
  • the upper body 2 comprises a similar housing delimited by the skirt 16 and intended to receive a second bearing 14 supporting the vertical shaft 4 but, unlike the housing provided for the first bearing 13, this housing is adjusted to immobilize the second bearing 14 according to its radial directions and to let it free in translation in the vertical direction.
  • a spring 15 is provided inside the housing of the second bearing 14 and exerts a force between the latter and the upper body 2 so as to maintain a downward pressure on the bearing 14.
  • the vertical shaft 4, on the ends of which are mounted the two bearings 13, 14, therefore takes place between the upper body 2 and lower 3 so as to be coaxial with the annular inlet duct 11 and the toric compression chamber 12 formed by the assembly of the upper body 2 and lower 3.
  • the wheel 7 carrying blades is also mounted on the vertical shaft 4 so as to be rotated therewith. It may for example be overmolded, glued or force-fitted on the shaft 4.
  • the wheel 7 carrying blades has a substantially conical shape allowing it to conform to the internal shape of the annular and conical walls 17 of the lower body 3, the blades being arranged on the wheel 7 so as to drive the wheel. air to circulate it between the volume delimited by said annular wall 17 and the toric compression chamber 12, during the rotation of the vertical shaft 4.
  • annular skirt 16 receives a horizontal plate 23 rigidly fixed to its inner wall, these two elements delimiting the motor housing previously described.
  • the motor housing is intended to receive the toric coil 6 and to keep it fixed with respect to said body 2.
  • the toric magnet 5 can be directly tightened or glued to the vertical shaft 4 or, as shown in FIGS. 1 to 3, the wheel 7 carrying blades can be tightened or glued to the said axis 4. enveloping it, the magnet 5 then being adjusted tight or glued on this envelope.
  • the volume defined by the upper bodies 2 and lower 3 as well as by the wheel 7 comprises an annular intake duct 11 open on the outside, coaxial with the vertical shaft 4 and delimited by the inside of the annular wall 17 and by the outer wall of the hub 20.
  • This annular inlet duct 11 communicates over its entire circumference with a compression duct 24 delimited by the inside of the conical wall 18 and by the face of the wheel 7 carrying the blades.
  • This compression duct 24 is therefore a frustoconical volume delimited by two coaxial cones flaring out from the intake duct 11.
  • the compression pipe 24 is itself connected over its entire circumference to the toric compression chamber 12 mentioned above.
  • This toric compression chamber 12 is delimited by the wall 22 and the annular projection of the upper body 2, as well as by the wall 19 of the lower body 3, these elements being arranged to form an internal toroidal volume comprising a circular slot forming an annular opening allowing communication with the compression conduit 24.
  • the blades 26, 27 act on the air essentially at the level of the compression duct 24 and also partially at the level of the annular intake duct 11.
  • the wheel 7 carries two types of blades 26, 27.
  • a first type of blade 26 is formed of a plane wall fixed perpendicular to the surface of the wheel, this wall having a generally trapezoidal shape and having a greater height in the central part of the wheel 7 than in its peripheral part. .
  • a second type of blade 27 is similar to the first type 26 but is longer so as to go further in the central part of the wheel 7.
  • the part of the blade disposed in this central part of the wheel 7 has a projection protruding to fit the shape of the junction between the intake duct 11 and the compression duct 24.
  • each type of blade can be arranged with an angle different from the other type.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Centrifugal Separators (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Claims (13)

  1. Elektroturbine 1 mit einem Turbinenrotor (4, 5), einem Turbinenstator (2, 3), einem Elektromotororgan (5, 6) zum Antreiben der Drehung des Rotors (4, 7) in Bezug auf den Stator (2, 3), wobei
    - der Turbinenstator (2, 3) einen Statorkörper umfasst, der eine im Wesentlichen torische Druckkammer (12) definiert;
    - der Turbinenrotor (4, 7) einen Flügelsatz (26, 27) umfasst, der sich im Wesentlichen radial erstreckt, wobei dieser Flügelsatz (26, 27) fest mit einer Welle (4) verbunden ist, die koaxial drehbar in dem Körper des Turbinenstators montiert ist;
    - das Elektromotororgan (5, 6) einen torischen Motorstator (6) umfasst, der in einer Motoraufnahme (16, 23) des Turbinenstators (2, 3), in der Mitte des torischen Druckkammer (12) angeordnet und befestigt ist, und einen Motorrotor (5), der axial gegenüber dem Motorstator (6) auf der Welle (4) des Turbinenrotors (4) montiert und befestigt ist;
    dadurch gekennzeichnet, dass die besagte Druckkammer (12) eine ringförmige Öffnung aufweist und sich der besagte Flügelsatz (26, 27) im Wesentlichen radial erstreckt ab einem mittleren, von einem ringförmigen Versorgungsleitung (11) gebildeten Lufteinlass bis zur ringförmigen Öffnung der Druckkammer (12) des Turbinenstators (2, 3).
  2. Turbine nach Anspruch 1, dadurch gekennzeichnet, dass einer der Motorstatoren (6) oder -rotoren (5) ein Dauermagnet ist.
  3. Turbine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass mindestens einer der Motorstatoren (6) oder -rotoren (5) eine torische Wicklung ist oder sind.
  4. Turbine nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, dass die Welle (4) des Turbinenrotors auf mindestens einem koaxial zur ringförmigen Versorgungsleistung (11) angeordneten Lager (13, 20) montiert ist.
  5. Turbine nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, dass die Welle (4) des Turbinenrotors auf mindestens einem in der Motoraufnahme angeordneten Lager (14) montiert ist.
  6. Turbine nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, dass der Statorkörper (2, 3) aus zwei Teilen besteht, die miteinander zusammenwirken und die torische Druckkammer (12) begrenzen.
  7. Turbine nach den Ansprüchen 1 bis 6, dadurch gekennzeichnet, dass die Flügel (26, 27) von einem angeformten Rad (7) getragen werden, das an der Welle (4) des Turbinenrotors einen Stutzen bildet.
  8. Turbine nach Anspruch 7, dadurch gekennzeichnet, dass der besagte Stutzen einen Absatz für die axiale Stützung des Motorrotors (5) umfasst.
  9. Turbine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Flügel (26, 27) von einem kegelstumpfförmigen Rad (7) getragen werden.
  10. Turbine nach Anspruch 9, dadurch gekennzeichnet, dass die Flügel (26, 27) von einer ebenen, senkrecht zur Oberfläche des Rads (7) befestigten Wand gebildet werden, wobei diese Wand im Wesentlichen trapezförmig ist und im mittleren Teil des Rads (7) eine größere Höhe aufweist als im Bereich seines Umfangs.
  11. Turbine nach Anspruch 10, dadurch gekennzeichnet, dass mindestens einige (27) der besagten Flügel (26, 27) in ihrem in dem mittleren Teil des Rads angeordneten Teil einen Vorsprung umfassen, der mit der ringförmigen Versorgungsleitung (11) einen Formschluss bildet.
  12. Turbine nach Anspruch 11, dadurch gekennzeichnet, dass jeder zweite Flügel in seinem im mittleren Teil des Rads (7) angeordneten Teil einen Vorsprung umfasst, der mit der ringförmigen Versorgungsleitung (11) einen Formschluss bildet.
  13. Turbine nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, dass einige der besagten Flügel (26, 27) mit dem durch das Ende des Flügels verlaufenden Radius des Rads (7) im Bereich des Umfangs des Rads (7) einen Winkel von 5 bis 60 Grad bilden.
EP02803822A 2001-11-27 2002-11-08 Zentrifugalturbine für atemhilfevorrichtungen Expired - Lifetime EP1448896B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0115314A FR2832770B1 (fr) 2001-11-27 2001-11-27 Turbine centrifuge pour dispositifs d'assistance respiratoire
FR0115314 2001-11-27
PCT/FR2002/003846 WO2003046385A1 (fr) 2001-11-27 2002-11-08 Turbine centrifuge pour dispositifs d'assistance respiratoire

Publications (2)

Publication Number Publication Date
EP1448896A1 EP1448896A1 (de) 2004-08-25
EP1448896B1 true EP1448896B1 (de) 2007-02-14

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Application Number Title Priority Date Filing Date
EP02803822A Expired - Lifetime EP1448896B1 (de) 2001-11-27 2002-11-08 Zentrifugalturbine für atemhilfevorrichtungen

Country Status (9)

Country Link
US (1) US6960854B2 (de)
EP (1) EP1448896B1 (de)
JP (1) JP4159992B2 (de)
AT (1) ATE354027T1 (de)
CA (1) CA2468465C (de)
DE (1) DE60218205T2 (de)
ES (1) ES2282517T3 (de)
FR (1) FR2832770B1 (de)
WO (1) WO2003046385A1 (de)

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JP4159992B2 (ja) 2008-10-01
WO2003046385A1 (fr) 2003-06-05
FR2832770B1 (fr) 2004-01-02
CA2468465A1 (en) 2003-06-05
JP2005510663A (ja) 2005-04-21
ATE354027T1 (de) 2007-03-15
EP1448896A1 (de) 2004-08-25
US6960854B2 (en) 2005-11-01
ES2282517T3 (es) 2007-10-16
DE60218205T2 (de) 2007-11-22
FR2832770A1 (fr) 2003-05-30
US20050036887A1 (en) 2005-02-17
DE60218205D1 (de) 2007-03-29
CA2468465C (en) 2011-01-11

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