EP2872783B1 - Belüftungsvorrichtung mit einem gehäuse in form eines spiralgehäuses - Google Patents

Belüftungsvorrichtung mit einem gehäuse in form eines spiralgehäuses Download PDF

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Publication number
EP2872783B1
EP2872783B1 EP13729333.8A EP13729333A EP2872783B1 EP 2872783 B1 EP2872783 B1 EP 2872783B1 EP 13729333 A EP13729333 A EP 13729333A EP 2872783 B1 EP2872783 B1 EP 2872783B1
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EP
European Patent Office
Prior art keywords
volute
expansion
angle
turbine
radial
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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.)
Not-in-force
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EP13729333.8A
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English (en)
French (fr)
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EP2872783A1 (de
Inventor
David Pihet
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Mahle International GmbH
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Mahle International GmbH
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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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid 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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/422—Discharge tongues
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Definitions

  • the present invention relates to a ventilation device for a heating, ventilation and / or air conditioning system, or HVAC (Heating Ventilating Air Conditionning), in particular for equipping a motor vehicle.
  • HVAC Heating Ventilating Air Conditionning
  • the invention relates more particularly to a ventilation device comprising at least one centrifugal air propulsion member for conveying air through a distribution circuit to the passenger compartment of the vehicle.
  • the centrifugal propulsion member comprises an annular turbine provided with fins which is rotated about an axis of rotation by a motor and which is arranged generally in the center of a casing shaped volute.
  • the air is taken up by the turbine axially from the outside of the housing and is driven along a corridor formed by the housing to a discharge orifice, or radial air outlet mouth communicating with the cooling circuit. distribution.
  • the corridor is delimited by the external surface of revolution of the turbine, defined by the outer edge of the fins, and the inner face of the peripheral wall of the housing enveloping the blades of the turbine at a distance.
  • the radial profile of the peripheral wall of the housing evolves in volute so as to gradually vary the separation distance between the edge of the fins and the inner face of the peripheral wall.
  • the peripheral wall thus forms a spiral around the turbine in the direction, said spiral evolving in the direction of rotation of the turbine.
  • volute To define the shape of the volute, we define an expansion angle of the volute which corresponds, at a determined point of the volute, to the angle formed between the tangent to the volute and the tangent to a circle passing through this point, the center of the volute and said circle being constituted here by the axis of rotation of the turbine.
  • the invention aims to solve the problem mentioned above by proposing a ventilation device that is particularly effective, especially in terms of size and sound level.
  • the invention proposes a ventilation device for a heating, ventilation and / or air-conditioning installation of a passenger compartment of a motor vehicle, comprising a turbine with blades rotating around an axis of rotation at the inside a casing radially shaped volute, the housing having an axial suction air mouth and a radial air outlet mouth communicating with the interior of a volute compartment delimited by the peripheral wall of the housing , the peripheral wall of the housing progressively moving away from the periphery of the turbine from a volute nose to a distal end of the volute, the radial expansion of the volute being defined by an expansion angle, characterized in that that the initial expansion angle in the vicinity of the volute nose is 1.5 times to 3 times greater than the final expansion angle in the vicinity of the distal end of the volute, so that the wall
  • the housing's periphery moves away more quickly from the fins at the beginning of the volute while minimizing the turbulence generated at the volute spout.
  • the ventilation device according to the invention also has the advantage of obtaining these good results while having a structure easy to manufacture and assemble, so that the cost of manufacture / efficiency is particularly interesting.
  • FIG. 1 to 5 a ventilation device 10 made in accordance with the teachings of the invention and intended to equip a heating, ventilation and / or air conditioning system of a passenger compartment of a motor vehicle.
  • the ventilation device 10 comprises a turbine 12 with fins 13 rotatably mounted about an axis of rotation A1 inside a casing 14 radially shaped volute.
  • the housing 14 has an axial air inlet mouth 16 and a radial air outlet mouth 18 which communicate with the interior of a compartment 20, or corridor, volute delimited by the peripheral wall 22 of the housing 14
  • the peripheral wall 22 of the housing 14 moves away radially and progressively from the periphery of the turbine 12 from a volute nose 24 to a distal end E 2 of the volute, as illustrated by FIG. figure 5 .
  • the spout 24 of volute which is shown in more detail on the figure 3 , is constituted by a portion of the peripheral wall 22 which is located generally at the intersection between the volute and a tubular outlet section 28, which extends from the distal end E 2 of the volute to the radial mouth 18.
  • the distal end E 2 of the volute corresponds generally to the end of the radial expansion of the housing 14, the outlet section 28 extending generally rectilinear in the direction of the air discharge F1, in a direction generally tangent with respect to the turbine 12.
  • the volute has, at its spout 24, an initial expansion angle at 1 and at its distal end E 2 a final expansion angle a 2 .
  • the value of the initial expansion angle a 1 is preferably between 1.5 and 3 times the value of the final expansion angle a 2 .
  • the higher value of the initial expansion angle a 1 allows the volute to deviate radially from the turbine 12 more rapidly at the beginning of its radial expansion than at the end of its radial expansion so as to minimize turbulence. produced in the air flow at the volute spout 24 which are the source of significant noise pollution given the close proximity of volute spout 24 with the turbine 12.
  • the expansion angle a i increases gradually until it reaches its average value around the first third of the volute.
  • the initial expansion angle a 1 of the volute is preferably between 3.5 and 9 degrees and the final expansion angle a 2 is preferably between 3 and 5 degrees.
  • the volute angle ⁇ max is preferably between 290 and 315 degrees.
  • Equation (1) makes it possible to define the evolution of the radius R vi of the volute from the initial end E 1 to the distal end E 2 .
  • This equation has been developed to allow both an initial expansion angle at 1 greater than the final expansion angle a 2 and a controlled progressivity of radial expansion.
  • the tests and measurements carried out by the applicant have shown excellent results in terms of reduced sound level and in terms of efficiency of the forced air flow.
  • Equation (1) provides a spiral profile for the volute which is particularly well suited for applications of the HVAC type for motor vehicles.
  • the evolution of the axial expansion of the volute follows generally the evolution of the radial expansion of the volute.
  • the evolution of the axial expansion can be dissociated from the evolution of the radial expansion, for example by increasing continuously and regularly all along the volute from its spout 24 to its distal end E2.
  • the profile of the peripheral wall 22 of the casing 14 in an axial plane is curved to form a substantially oval or ellipsoidal portion intended to eliminate the angles inside the compartment 20.
  • the axial section of the peripheral wall 22 possesses preferably a generally "C" shaped profile, as illustrated by the axial sectional view of the figure 4 .
  • the volute thus has an upper inner circumferential edge 30 which is curved inwardly and downward and a lower inner circumferential edge 32 which is curved inwardly and upwardly.
  • the upper circumferential edge 30 extends radially inwards to form the peripheral edge 34 delimiting the axial mouth 16.
  • the upper circumferential edge 30 extends partially above the turbine 12, at the
  • the lower circumferential edge 32 extends radially inwardly to form the bottom wall 36 of the housing 22, opposite the axial mouth 16.
  • the radial discharge mouth 18 has an axial section with a rounded or oval profile, as illustrated in FIGS. Figures 1, 2 and 3 , so that the outlet section gradually forms a tube.
  • the spout 24 of volute has an oval profile, generally ellipsoidal or parabolic, which is illustrated by the figure 3 , so as to minimize the turbulence produced in the pulsed air at the volute nozzle 24.
  • the housing 22 according to the invention is particularly suitable for a turbine 12 whose outer profile, in an axial plane, is generally parallel to the axis A1, the outer edge of the fins 13 being generally vertical.
  • the casing 14 is made in the form of two half-shells 38, 40 which are assembled with one another along a joint plane 42 orthogonal to the axis A1 of the turbine 12, the joint plane 42 being illustrated on the Figures 1 and 2 .
  • the two half-shells 38, 40 can thus be made by molding plastic material.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (10)

  1. Vorrichtung zur Belüftung (10) für eine Heiz-, Belüftungs- und / oder Klimaanlage einer Kraftfahrzeugkabine, umfassend eine Turbine (12) mit Lamellen (13), die drehbar um eine Drehachse (A1) innerhalb eines Gehäuses (14) angebracht ist, das radial einer Spirale entspricht, wobei das Gehäuse (14) eine axiale Mündung (16) zur Ansaugung von Luft und eine radiale Mündung (18) zum Austritt von Luft umfasst, die mit dem Inneren eines spiralförmigen Abteils (20) verbunden sind, das durch die Umfangswand (22) des Gehäuses (14) begrenzt ist, wobei sich die Umfangswand (22) des Gehäuses (14) fortschreitend von dem Rand der Turbine (12) ausgehend von der Tülle (24) der Spirale bis zu einem distalen Ende (E2) der Spirale entfernt, wobei die radiale Ausdehnung der Spirale durch einen Ausdehnungswinkel ai definiert ist, dadurch gekennzeichnet, dass
    der initiale Ausdehnungswinkel a1 in der Nähe der Tülle (24) der Spiral 1,5-mal bis 3-mal größer als der finale Ausdehnungswinkel a2 in der Nähe des distalen Endes (E2) der Spirale ist so dass sich die Umfangswand (22) des Gehäuses (14) schneller von den Lamellen (13) am Anfang der Spirale entfernt, wobei die Turbulenzen minimiert werden , die bei der Tülle (24) der Spirale erzeugt werden, und dass
    die radiale Ausdehnung der Spirale durch die Gleichung definiert ist: R vi = R t + d tv × e θ i × tan a 1 − a 1 − a 2 θ max × θ i
    Figure imgb0004
     wobei:
    Rvi der Radius der Spirale an einem vorbestimmten Punkt (Ei) der Spirale ist,
    Rt der äußere Radius der Turbine (12) ist,
    dtv der minimale radiale Abstand zwischen dem äußeren Rand der Lamellen (13) der Turbine (12) und der Tülle (24) der Spirale ist,
    θi der Winkel ist, der durch das initiale Ende (E1) der Spirale und den bestimmten Punkt (Ei) der Spirale um die Drehachse (A1) definiert ist,
    a1 der initiale Ausdehnungswinkel der Spirale ist,
    a2 der finale Ausdehnungswinkel der Spirale ist,
    θmax der Winkel der Spirale ist, der dem Winkel entspricht, der durch das initiale Ende (E1) der Spirale und das distale Ende (E2) der Spirale um die Drehachse (A1) definiert ist, , und dass
    der Winkel der Spirale θmax zwischen 290 und 315 Grad liegt.
  2. Vorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der initiale Ausdehnungswinkel a1 zwischen 3,5 und 9 Grad liegt.
  3. Vorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der finale Ausdehnungswinkel a2 zwischen 3 und 5 Grad liegt.
  4. Vorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der axiale Schnitt der Umfangswand (22) der Spirale ein Profil hat, das im Wesentlichen in der Form von einem "C", vorzugsweise ein ovales Profil, ist.
  5. Vorrichtung (10) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die radiale Mündung (18) zum Austritt einen axialen Schnitt mit einem runden oder ovalen Profil besitzt, so dass der Austrittsabschnitt (28), der sich von dem distalen Ende (E2) der Spirale zu der radialen Mündung (18) zum Austritt erstreckt, allmählich ein Rohr bildet.
  6. Vorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Entwicklung der axialen Ausdehnung der Spirale im Wesentlichen der Entwicklung ihrer radialen Ausdehnung folgt.
  7. Vorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Tülle (24) der Spirale ein im Wesentlichen ovales Profil hat.
  8. Vorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das äußere Profil der Turbine (12) in einer axialen Ebene, im Wesentlichen parallel zur Achse (A1) der Turbine (12) ist.
  9. Vorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die innere Umfangskante (30) der Spirale von der Seite der axialen Mündung (16) zum Saugen durch eine radiale Verlängerung (34) verlängert ist, welche einen Abschnitt der Turbine (12) bedeckt und welche die axiale Mündung (16) zum Saugen begrenzt.
  10. Vorrichtung (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gehäuse (22) in Form von zwei Halbschalen (38, 40) gebildet ist, die vorzugsweise durch Formen von Kunststoff gebildet sind, wobei die zwei Halbschalen (38, 40) aneinander entlang einer Verbindungsebene (42) orthogonal zur Achse (A1) der Turbine (12) angebracht sind.
EP13729333.8A 2012-07-13 2013-06-17 Belüftungsvorrichtung mit einem gehäuse in form eines spiralgehäuses Not-in-force EP2872783B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1256755A FR2993208B1 (fr) 2012-07-13 2012-07-13 Dispositif de ventilation equipe d'un boitier conforme en volute.
PCT/EP2013/062475 WO2014009103A1 (fr) 2012-07-13 2013-06-17 Dispositif de ventilation equipe d'un boitier conforme en volute

Publications (2)

Publication Number Publication Date
EP2872783A1 EP2872783A1 (de) 2015-05-20
EP2872783B1 true EP2872783B1 (de) 2016-12-07

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US (1) US9745983B2 (de)
EP (1) EP2872783B1 (de)
JP (1) JP6256720B2 (de)
CN (1) CN104411981B (de)
FR (1) FR2993208B1 (de)
WO (1) WO2014009103A1 (de)

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Publication number Publication date
WO2014009103A1 (fr) 2014-01-16
FR2993208B1 (fr) 2016-08-05
FR2993208A1 (fr) 2014-01-17
EP2872783A1 (de) 2015-05-20
US9745983B2 (en) 2017-08-29
CN104411981A (zh) 2015-03-11
JP2015522128A (ja) 2015-08-03
CN104411981B (zh) 2016-09-21
JP6256720B2 (ja) 2018-01-10
US20150204337A1 (en) 2015-07-23

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