EP2284401B1 - Roue de ventilateur et appareil de cuisson - Google Patents

Roue de ventilateur et appareil de cuisson Download PDF

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Publication number
EP2284401B1
EP2284401B1 EP20090167655 EP09167655A EP2284401B1 EP 2284401 B1 EP2284401 B1 EP 2284401B1 EP 20090167655 EP20090167655 EP 20090167655 EP 09167655 A EP09167655 A EP 09167655A EP 2284401 B1 EP2284401 B1 EP 2284401B1
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EP
European Patent Office
Prior art keywords
ventilator wheel
raised part
separating element
recess
rotation
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.)
Active
Application number
EP20090167655
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German (de)
English (en)
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EP2284401A1 (fr
Inventor
Aldo Paintner
Dr. Thomas Schreiner
Michael Herner
Robert Kurth
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.)
Rational AG
Original Assignee
Rational AG
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Publication date
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Priority to EP20090167655 priority Critical patent/EP2284401B1/fr
Publication of EP2284401A1 publication Critical patent/EP2284401A1/fr
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Publication of EP2284401B1 publication Critical patent/EP2284401B1/fr
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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
    • F04D29/289—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps having provision against erosion or for dust-separation
    • 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
    • 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

Definitions

  • the present invention relates to a fan with a rotatable about a rotation axis first fan blade, the first fan blade is arranged so relative to the axis of rotation and is formed so that upon rotation of the fan independently of a direction of rotation with respect to the axis of rotation by means of the fan a fluid in a radial direction is conveyed away from the axis of rotation, on a first surface of the first fan blade at least a first deposition element having at least one extending away from the first surface first elevation, is arranged, and on a first surface opposite the second surface of the first surface Fan blade at least a second separation element, which has at least one extending away from the second surface second elevation, is arranged, and a cooking appliance comprising at least one fan with a fan impeller according to the invention and a method for depositing iden of particles from a pumped by a fan fluid.
  • the DE 102 39 246 C1 discloses a fan with integrated grease separation, especially for a cooking appliance. It is proposed that a fan wheel having a base plate on which a plurality of fan blades are mounted has a grease deposit such that on an outer surface of at least a part of the fan blades An increase is appropriate, this increase is welded as an additional element on the outer surface of the Lüfterradschaufeln.
  • This fan has proven itself in principle, but it has been shown that it is given for a promotion of a fluid radially outward relative to a rotational axis of the fan a sense of rotation of the fan. Due to this direction of rotation of the fan wheel, when the fan wheel is used in a cooking appliance, an uneven flow of a fluid circulated through the fan wheel, such as a cooking chamber atmosphere, may occur. This can also result in a one-sided loading of the drive elements of the fan wheel, which can lead to increased wear.
  • the DE 103 15 341 A1 discloses a cooking appliance with a fan with a generic fan in the form of a radial impeller and a separator.
  • the radial impeller has a base plate on which a plurality of blades are arranged perpendicular to the base plate radially to a rotational axis.
  • On the blades of the radial impeller corresponding separation elements are pushed, which provide a respective edge on both sides of the blades.
  • a groove is formed between the blades and the edge at which particles entrained in the fluid to be circulated are separated and deflected.
  • a disadvantage of this generic fan is, however, that also separate elements are provided on the fan blades to ensure a separation of entrained in the fluid fluid particles, which represents an increased manufacturing and thus cost of the fan.
  • the fan blades must be comparatively large, in particular have a comparatively large thickness, to ensure retention of the separation elements and at the same time to avoid bending or twisting of the fan wheel.
  • Object of the present invention is therefore to further develop the generic fan in such a way that the disadvantages of the prior art are overcome, in particular a fan is provided, which does not have a direction of rotation for conveying a fluid is bound in a radially outward direction, has a structurally simple construction and at the same time has improved separation properties in order to reliably ensure a separation or diversion of fluid particles entrained in the conveyed fluid.
  • first increase and the second increase are formed integrally with the first fan blade.
  • the fan wheel comprises a plurality of fan blades, in particular first fan blades, wherein the fan blades are preferably arranged on a base plate encompassed by the fan, wherein, in particular, the axis of rotation extends substantially parallel to a normal direction of the base plate.
  • a first depression complementary to the first elevation is formed on the second surface and / or a second depression complementary to the second elevation is / are formed on the first surface, wherein preferably the first precipitation element comprises the second depression and / or the second separation element comprises the first recess.
  • first surface and / or the second surface on the one hand substantially parallel to the normal direction of the base plate and / or the axis of rotation and on the other hand substantially in a radial direction of the axis of rotation and / or extends parallel to the base plate extend.
  • the first surface and / or the second surface extends from the base plate to at least one support element or extend, preferably a support member at least one cover ring, which is arranged on the side facing away from the base plate of the first Lüfterradschaufel , and / or the first elevation, the second elevation, the first depression and / or the second depression are formed by means of forming, embossing, compression, folding, laser forming, punching and / or bending.
  • the invention provides that the first fan blade in the region of the first separation element and / or the second separation element at least partially a substantially S-shaped, Z-shaped, triangular, step-shaped, ramp-shaped and / or sawtooth-shaped cross-sectional shape perpendicular to the first and second
  • a first end of the S or Z comprises at least partially the first elevation and / or the second recess and a second end of the S or Z at least partially encompasses the second elevation and / or the first recess or.
  • a fan impeller according to the invention may be characterized in that the first fan blade in particular the first surface and / or the second surface, an inner edge facing the axis of rotation and an outer edge facing away from the axis of rotation comprises, preferably the first separation element and / or the second separation element, in particular the first elevation, the second elevation, the first depression and / or the second depression extending diagonally from the inner edge in the direction of the outer edge, and / or a distance between the first deposition element and / or the second deposition element on the one hand and the base plate on the other hand Inner edge to the outer edge decreases.
  • first separation element and / or the second separation element in particular the first elevation, the second elevation, the first depression and / or the second depression, is or are arcuate and / or curved at least in regions, in particular in FIG Direction of the base plate is bent or are.
  • the invention further provides that the first elevation and / or the first recess has at least one of the base plate and / or the inner edge facing the first flank and at least one of the base plate and / or the inner edge facing away from the second flank, and / or the second elevation and / or the second recess has at least one of the base plate and / or the inner edge facing third edge and at least one of the base plate and / or the inner edge facing away fourth edge, wherein preferably the first edge has a greater or equal slope, in particular relative to the first surface and or the second surface, when the second flank and / or the third flank has a greater or equal slope, in particular relative to the first surface and / or the second surface, as the fourth flank.
  • first edge relative to the first surface and / or the third edge relative to the second surface at an angle of more than about 70 °, preferably more than about 80 °, in particular about 90 °, more than about 90 ° or more than about 120 °.
  • the first geometric extent is at least partially about 1mm to 10mm, preferably about 2mm to 7mm, more preferably about 3mm to 6mm, most preferably about 4mm to 5mm, and / or a second geometric dimension of the first deposition element and / or the second separation element, in particular the first elevation, the second elevation, the first depression and / or the second depression, along the first surface and / or the second surface, in particular a width of the first separation element and / or the second separation element, at least be approximately 6mm to 10mm, preferably about 7mm to 9mm, most preferably about 8mm, and / or a third geometric dimension of the first deposition element and the second separation element, in particular a total width of the first separation element and the second separation element, about 12
  • the first fan blade includes a plurality of first Abscheidmaschinen and / or second Abscheidmaschinen.
  • the invention provides a cooking appliance with a fan according to the invention, wherein preferably by means of the blower, an atmosphere within a cooking chamber of the cooking appliance can be conveyed.
  • the invention provides a method for separating particles from the fluid dispersed in a fluid conveyed by a fan wheel, in particular a fan impeller according to the invention, the fluid being independent of the direction of rotation of the fan wheel about a rotation axis in a radial direction from the rotation axis is conveyed away, wherein the particles during rotation of the fan in a first rotational direction about the axis of rotation at least partially by at least a first separation element, which is at least partially formed by a formed on at least a first surface of a first Lüfterradschaufel integral with the first Lüfterradschaufel first increase, are deposited and the particles upon rotation of the fan in a first rotational direction opposite, second direction of rotation at least partially by at least a second deposition element, at least partially by a on at least a second Oberfläc He, the first surface of the first fan blade is formed integrally with the first fan blade formed second elevation, are deposited.
  • a first depression is formed by the first elevation on the second surface and / or a second depression is formed by the second elevation on the first surface, wherein preferably the first precipitation element also extends through the second depression and
  • the second deposition element may also be formed by the first depression and / or the first elevation, the second elevation, the first depression and / or the second depression by forming, embossing, compression, folding, laser forming, punching and / or bending is trained or become.
  • a fan wheel can be provided by the one-piece design or integral formation of a separation element in a fan blade, in particular by forming the Lüfterradschaufel, which constructively simple design and thus inexpensive and easy to manufacture is at the same time a more efficient separation of liquid particles entrained in a fluid allows no rotation specification for a promotion of a fluid radially outwards relative to a rotation axis and has a lower carrier moment, since the fan blades can have a smaller geometric dimension, in particular thinner, and thus a more sensitive control of a delivery of a fluid is made possible.
  • the separation elements entrained in a funded fluid or a cooking medium in particular bound particles and liquids directed at turning the impeller targeted to a planned ejection point, in particular led around the fan arranged heating elements.
  • the particles are dispersed in the pumped fluid, so the fluid may in particular represent an aerosol, in which solid and / or liquid particles are present in a gaseous fluid.
  • the increase in itself act as guide elements, where occurring on the fan wheel liquid particles are guided along and thus liquid-separating effect.
  • a depression which has a corresponding edge formation, also forms on the opposite side of the fan blade and through which the liquid impinging on the fan blade is additionally channeled and guided to a discharge point.
  • Due to the two-sided design of the increase forms an increase and depression combination on both sides, which is effective in both directions of rotation of the fan. In this way, moreover, a higher liquid separation efficiency is achieved because particles passing over the depression are "intercepted" at the elevation, and vice versa, particles that pass beyond the elevation are trapped in the depression.
  • the core idea of the invention is thus that a deformation of the fan blades of the fan wheel causes the known from the prior art increase is caused by deformation in one direction of rotation and in the opposite direction an additional recess is used.
  • an improvement in the rigidity of the impeller is achieved by an increased degree of deformation, so that a material thickness reduction can be achieved and thus the weight of the fan and thus the moment of inertia can be reduced.
  • FIG. 1 is a schematic cross-sectional view of a fan wheel 1 according to the invention shown.
  • the fan 1 has a base plate 3, which is rotatably supported about a shaft 5 about a rotation axis d on.
  • the fan 1 is driven via the shaft 5 by means of a drive device, not shown, such as a motor.
  • a drive device not shown, such as a motor.
  • an annular support member 11 is arranged on the side facing away from the base plate 3 of the Lüfterradschaufeln 7, 9, on the side facing away from the base plate 3 of the Lüfterradschaufeln 7, 9, an annular support member 11 is arranged.
  • the fan 1 is in particular of a fan, not shown, which is arranged in a fan room, not shown, or a cooking chamber, not shown, a cooking appliance, in particular a combi steamer, comprises.
  • a fluid in the form of a cooking chamber atmosphere is circulated within the cooking chamber for equalization of the cooking chamber climate within the cooking chamber.
  • the fan wheel 1 is rotated about the axis of rotation d, wherein the fan blades 7, 9 are arranged in particular radially outwardly from the axis of rotation d, so that by rotation of the fan 1 about the axis of rotation d, regardless of a direction of rotation, one by arrows 13 indicated flow arises.
  • Radially around the fan 1 heating elements 15 are arranged, by means of which the funded by the fan 1 fluid is heated.
  • the fan blades 7, 9 comprise separating devices 17, 19. These separating devices 17, 19 cause liquid droplets entrained in the fluid to be guided along the separating devices 17, 19 towards the base plate 3, in particular due to the centrifugal forces acting on the particles, and then over a gap 21, 23 between the separating device 17, 19 and the base plate 3 is formed to leave the fan 1, in particular the fan blades 7, 9, in an area that is outside of the heating elements 15.
  • FIG. 2a is a schematic plan view of the Lüfterradschaufel 7 shown.
  • the Lüfterradschaufel 7 has an inner edge 25 and an outer edge 27, wherein the inner edge 25 of the axis of rotation d faces, while the outer edge 27 of the axis of rotation d faces away.
  • the separation device 17 extends diagonally from the inner edge 25 to the outer edge 27, in particular, the distance of the separating device 17 to the base plate 3 from the inner edge 25 to the outer edge 27 decreases.
  • the separation device 17 is arcuate or curved.
  • FIG. 2b is a schematic cross-sectional view of the Lüfterradschaufel 7 shown from direction A.
  • the Lüfterradschaufel 7 has a first surface 29 and a second surface 31.
  • the separation device 17 comprises a first separation element 33, which comprises a first elevation 35.
  • the separation device 17 comprises a second separation element 37, which comprises a second elevation 39.
  • the elevations 35, 39 are integrally formed in the Lüfterradschaufel 7, in particular, the elevations 35, 39 were formed by forming, preferably embossing, in the Lüfterradschaufel 7.
  • the first elevation 35 has a first flank 45 and a second flank 47
  • the second flare 39 has a third flank 49 and a fourth flank 51.
  • the first edge 45 and the third edge 49 of the base plate 3 and inner edge 25 facing, while the second edge 47 and the fourth edge 51 facing away from the base plate or inner edge 25 and the outer edge 27 are facing.
  • the third flank 49 extends almost perpendicular to the surface 31. This causes, with a rotation of the fan wheel 1 and thus the fan blade 7 due to the centrifugal force liquid particles move in the direction of the edge 49, there are collected and the direction of the base plate 3 are discharged.
  • the flank 49 is perpendicular to the second surface 31, thus preferably enclosing with this an angle of approximately 90 °.
  • the elevation 39 is substantially sawtooth-shaped, i. the fourth flank 51 has a smaller pitch than the third flank 49.
  • the second separation element 37 causes liquid to be collected at the flank 49.
  • the separating elements 33, 37 essentially form an S or Z shape.
  • FIG. 2c and 2d are alternative embodiments of in FIG. 2a shown Lüfterradschaufel 7 in the form of fan blades 107 and 207 shown.
  • the fan blade 107 and the fan blade 207 have compared to that in FIG. 2b illustrated cross-section different cross-sectional shapes having separating device 117 and 217 on.
  • Those elements of the Lüfterradschaufel 107, which correspond to those of the Lüfterradschaufel 7, carry the same reference numerals, however, increased by a factor of 100, while those elements of the Lüfterradschaufel 207, which correspond to those of the Lüfterradschaufel 7, the same reference numerals, but by a factor of 200 elevated.
  • the separation device 117 has a substantially rectangular cross-sectional shape compared to the separation device 17; in particular, the elevations 135 and 139 are substantially rectangular in shape.
  • the separation device 217 has tapered elevations 235 and 239 to achieve a higher separation efficiency.
  • the base plate facing edge 145, 245 and third edge 148, 249, the respective Abscheideelements 133, 137, 233, 237 and the respective increase 135, 139, 235, 239 has a greater or an equal slope as the second edge 147, 247 and fourth edge 151, 251, in order to achieve the greatest possible degree of separation through the elevations 135, 139, 235, 239.
  • the flanks of the recesses, which face the base plate or inner edge have a comparatively large pitch to achieve the greatest possible degree of separation in the recess.
  • FIGS. 3a to 3c a second embodiment of a fan blade according to the invention 7 'is shown. Elements of the Lüfterradschaufel 7 ', those of the Lüfterradschaufel 1 of Figures 1 to 2b correspond, bear the same reference numerals, but simply deleted.
  • the separation device 17 ' in particular the separation elements 33', 37 'and their elevations 35', 39 ', also arcuately formed from the inner edge 25' to the outer edge 27 'of the Lüfterradschaufel 7', however, the curvature to the Base plate 3 'curved towards.
  • the elevations 35 ', 39' in comparison to the elevations 35, 39 a different cross-sectional shape.
  • both the first and the second flank 45 ', 47' and the third flank 49 'and fourth flank 51' are each formed perpendicularly relative to the surfaces 29 ', 31' of the fan blade 7 '.
  • the flank shape in particular a substantially rectangular cross-sectional shape, the elevations 35 ', 39', a best possible collection of liquid on the flanks 45 ', 49' and in the recesses 41 ', 43' is achieved.
  • FIGS. 4a to 4c there is shown a third embodiment of a fan blade 7 "according to the invention
  • the elements of the fan blade 7" which correspond to those of the fan blade 7 or 7 'bear the same reference numerals, but painted twice.
  • a width b 1 "of the first deposition element 33" is 7.5 mm, for example, similar to a width b 2 "of the second separation element 37".
  • a total width b 3 "of the separation device 17" is 18.4 mm.

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Claims (15)

  1. Roue de ventilateur (1) ayant au moins une première pale de roue de ventilateur (7, 7', 7", 9) pouvant tourner autour d'un axe de rotation (d), dans lequel
    la première pale de roue de ventilateur (7, 7', 7", 9) est disposée par rapport à l'axe de rotation (d), et est formée de telle sorte que lors d'une rotation de la roue de ventilateur (1), indépendamment du sens de rotation de l'axe de rotation (d), un fluide va être incité à s'éloigner dans une direction radiale par rapport à l'axe de rotation (d) au moyen de la roue de ventilateur (1),
    sur une première surface supérieure (29, 29', 29") de la première pale de roue de ventilateur (7, 7', 7", 9) est agencé au moins un premier élément de séparation (33, 33', 33 "), présentant au moins une première saillie (35, 35', 35") s'étendant loin de la première surface supérieure (29, 29', 29"), et
    sur une deuxième surface supérieure (31, 31', 31") opposée à la première surface supérieure (29, 29', 29") de la première pale de roue de ventilateur (7, 7', 7", 9) est agencé au moins un deuxième élément de séparation (37, 37', 37"), présentant au moins une deuxième saillie (39, 39', 39")s'étendant loin de la deuxième surface supérieure (31, 31', 31"),
    caractérisée en ce que
    la première saillie (35, 35', 35") et la deuxième saillie (39, 39', 39") sont formées en un seul bloc avec la première pale de roue de ventilateur (7, 7', 7", 9).
  2. Roue de ventilateur selon la revendication1, caractérisée en ce que
    la roue de ventilateur (1) comporte une multiplicité de pales de roue de ventilateur (7, 7', 7", 9), en particulier de premières pales de roue de ventilateur (7, 7', 7", 9), de sorte les pales de roue de ventilateur (7, 7', 7", 9) sont disposées en priorité sur une plaque de base (3, 3', 3 ") de la roue de ventilateur, l'axe de rotation (d) s'étendant en outre en particulier essentiellement parallèlement à une direction normale de la plaque de base (3, 3', 3 ").
  3. Roue de ventilateur selon la revendication 1 ou 2, caractérisée en ce que
    sur la deuxième surface supérieure (31, 31', 31 ") est agencé un premier enfoncement (41, 41', 41") complémentaire de la première saillie (35, 35', 35 ") et/ou sur la première surface supérieure (29, 29', 29") est agencé un deuxième enfoncement (43, 43', 43") complémentaire de la deuxième saillie (39, 39', 39"), de sorte que le premier élément de séparation (33, 33', 33") comporte de préférence le deuxième enfoncement (43, 43', 43") et/ou le deuxième élément de séparation (37, 37', 37") comporte de préférence le premier enfoncement (41, 41', 41").
  4. Roue de ventilateur selon l'une quelconque des revendications précédentes, caractérisé en ce que
    la première surface supérieure (29, 29', 29") et/ou la deuxième surface supérieure (31, 31', 31") s'étendent depuis la plaque de base (3, 3', 3 ") jusqu'au moins un élément de support (11, 11', 11 "), de sorte que l'élément de support (11, 11', 11 ") comporte au moins une plaque de recouvrement, qui est agencée sur le côté de la première pale de roue de ventilateur (7, 7', 7", 9) dirigé à l'opposé de la plaque de base (3, 3', 3"), et/ou la première saillie (35, 35', 35"), la deuxième saillie (39, 39', 39"), le premier enfoncement (41, 41', 41") et/ou le deuxième enfoncement (43, 43', 43 ") est/ sont formés par modification de forme, estampage, refoulage, pliage, modification au laser, emboutissage et/ou torsion.
  5. Roue de ventilateur selon l'une quelconque des revendications précédentes, caractérisée en ce que
    la première pale de roue de ventilateur (7, 7', 7", 9) dans le secteur du premier élément de séparation (33, 33', 33") et/ou du deuxième élément de séparation (37, 37', 37") présente, au moins par endroits, une coupe transversale essentiellement en forme de S, de Z, triangulaire, en forme de marche, de rampe et/ou de dents de scie perpendiculairement aux première et deuxième surfaces supérieures (29, 29', 29", 31, 31', 31 "), de sorte que de préférence
    une première extrémité du S ou du Z comporte, au moins partiellement, la première saillie (35, 35', 35") et/ou le deuxième enfoncement (43, 43', 43 "), et une deuxième extrémité du S ou du Z comporte, au moins partiellement, la deuxième saillie (39, 39', 39") et/ou le premier enfoncement (41, 41', 41 ").
  6. Roue de ventilateur selon l'une quelconque des revendications précédentes, caractérisée en ce que
    la première pale de roue de ventilateur (7, 7', 7", 9), en particulier la première surface supérieure (29, 29', 29") et/ou la deuxième surface supérieure (31, 31', 31"), comporte un bord intérieur (25, 25', 25') faisant face à l'axe de rotation (d) ,et un bord extérieur (27, 27', 27') dirigé à l'opposé de l'axe de rotation (d), de sorte que de préférence le premier élément de séparation (33, 33', 33") et/ou le deuxième élément de séparation (37, 37', 37"), en particulier la première saillie (35, 35', 35 "), la deuxième saillie (39, 39', 39"), le premier enfoncement (41, 41', 41") et/ou le deuxième enfoncement (43, 43', 43"), s'étendent en diagonale à partir du bord intérieur(25, 25', 25') en direction du bord extérieur (27, 27', 27'), et/ou un intervalle entre le premier élément de séparation (33, 33', 33") et/ou le deuxième élément de séparation (37, 37', 37") d'une part, et la plaque de base (3, 3', 3") d'autre part, diminue du bord intérieur(25, 25', 25') vers le bord extérieur (27, 27', 27').
  7. Roue de ventilateur selon l'une quelconque des revendications précédentes, caractérisée en ce que
    le premier élément de séparation (33, 33', 33") et/ou le deuxième élément de séparation (37, 37', 37"), en particulier la première saillie (35, 35', 35 "), la deuxième saillie (39, 39', 39"), le premier enfoncement (41, 41', 41") et/ou le deuxième enfoncement (43, 43', 43 "), sont formés au moins partiellement en arc et/ou courbés en particulier pliés en direction de la plaque de base (3, 3', 3 ").
  8. Roue de ventilateur selon l'une quelconque des revendications précédentes, caractérisée en ce que
    la première saillie (35, 35', 35 ") et/ou le premier enfoncement (41, 41', 41") comporte au moins un premier flanc (45, 45', 45 ") faisant face à la plaque de base (3, 3', 3") et/ou au bord intérieur(25, 25', 25'), et au moins un deuxième flanc (47, 47', 47") dirigé à l'opposé de la plaque de base (3, 3', 3") et/ou du bord intérieur(25, 25', 25'), et/ou la deuxième saillie (39, 39', 39") et/ou le deuxième enfoncement (43, 43', 43") comporte au moins un troisième flanc (49, 49', 49") faisant face à la plaque de base (3, 3', 3 ") et/ou au bord intérieur(25, 25', 25'), et au moins un quatrième flanc (51, 51', 51") dirigé à l'opposé de la plaque de base (3, 3', 3") et/ou du bord intérieur(25, 25', 25'), de sorte que de préférence
    le premier flanc (45, 45', 45 ") présente une pente identique ou plus grande, en particulier par rapport à la première surface supérieure (29, 29', 29") et/ou à la deuxième surface supérieure (31, 31', 31"), que le deuxième flanc (47, 47', 47"), et/ou le troisième flanc (49, 49', 49") présente une pente identique ou plus grande, en particulier par rapport à la première surface supérieure (29, 29', 29") et/ou à la deuxième surface supérieure (31, 31', 31"), que le quatrième flanc (51, 51', 51").
  9. Roue de ventilateur selon la revendication 8, caractérisée en ce que
    le premier flanc (45, 45', 45 ") présente, par rapport à la première surface supérieure (29, 29', 29"), et/ou le troisième flanc (49, 49', 49") présente, par rapport à la deuxième surface supérieure (31, 31', 31"), un angle supérieur à environ 70°, de préférence supérieur à environ 80°, en particulier d'environ 90°, supérieur à environ 90°, ou supérieur à environ 120°.
  10. Roue de ventilateur selon l'une quelconque des revendications précédentes, caractérisée en ce que
    une première dimension géométrique de la première saillie (35, 35', 35") et/ou de la deuxième saillie (39, 39', 39"), perpendiculairement par rapport à la première surface supérieure (29, 29', 29") et/ou à la deuxième surface supérieure (31, 31', 31") diminue au moins partiellement, en particulier une hauteur (h1', h2') de la première saillie (35, 35', 35") et/ou de la deuxième saillie (39, 39', 39"), dans une direction s'éloignant de la plaque de base (3, 3', 3"), et diminue de préférence de façon continue,
    de sorte que de préférence la première dimension géométrique (h1', h2', h1", h2") est au moins par endroits d'environ 1 mm à 10mm, de manière préférée d'environ 2 mm à 7 mm, de manière encore plus préférée d'environ 3 mm à 6 mm, et de la manière la plus préférée d'environ 4 mm à 5 mm, et/ou une deuxième dimension géométrique du premier élément de séparation (33, 33', 33") et/ou du deuxième élément de séparation (37, 37', 37"), en particulier de la première saillie (35, 35', 35 "), de la deuxième saillie (39, 39', 39"), du premier enfoncement (41, 41', 41") et/ou du deuxième enfoncement (43, 43', 43"), le long de la première surface supérieure (29, 29', 29") et/ou la deuxième surface supérieure (31, 31', 31 "), en particulier une largeur (b1", b2 ") du premier élément de séparation (33, 33', 33") et/ou du deuxième élément de séparation (37, 37', 37"), est au moins par endroits d'environ 6 mm à 10 mm, de manière préférée d'environ 7 mm à 9 mm, et de la manière la plus préférée d'environ 8 mm, et/ou
    une troisième dimension géométrique du premier élément de séparation (33, 33', 33") et du deuxième élément de séparation (37, 37', 37"), en particulier une largeur totale (b3 ") du premier élément de séparation (33, 33', 33 ") et du deuxième élément de séparation (37, 37', 37"), est d'environ 12 mm à 25 mm, de manière préférée d'environ 14 mm à 22 mm, de manière encore plus préférée d'environ 16 mm à 20 mm, et de la manière la plus préférée d'environ 18 mm.
  11. Roue de ventilateur selon l'une quelconque des revendications précédentes, caractérisé en ce que
    un intervalle (21, 21', 21") entre d'une part le premier élément de séparation (33, 33', 33 ") et/ou le deuxième élément de séparation (37, 37', 37"), en particulier la première saillie (35, 35', 35") et/ou la deuxième saillie (39, 39', 39"), et d'autre part la plaque de base (3, 3', 3"), en particulier dans le secteur du bord extérieur (27, 27', 27'), est de préférence d'environ 5 mm à 25 mm, de manière plus préférée d'environ 10 mm à 20 mm.
  12. Roue de ventilateur selon l'une quelconque des revendications précédentes, caractérisée en ce que
    la première pale de roue de ventilateur (7, 7', 7", 9) comporte une multiplicité de premiers éléments de séparation (33, 33', 33") et/ou de deuxièmes éléments de séparation (37, 37', 37").
  13. Appareil de cuisson, en particulier appareil de cuisson à vapeur d'air chaud, comprenant au moins un ventilateur ayant une roue de ventilateur (1) selon l'une quelconque des revendications précédentes, une atmosphère dans un espace de cuisson de l'appareil de cuisson étant exploitable au moyen du ventilateur.
  14. Procédé pour séparer d'un fluide, au moyen d'une roue de ventilateur, en particulier une roue de ventilateur selon l'une quelconque des revendications 1 à 12, des particules dispersées dans le fluide attiré à l'intérieur, de sorte que le fluide, indépendamment du sens de rotation de la roue de ventilateur autour d'un axe de rotation (d), va être incité à s'éloigner dans une direction radiale par rapport à l'axe de rotation (d), caractérisé en ce que
    les particules vont être séparées au moins partiellement, lors de la rotation de la roue de ventilateur dans un premier sens de rotation autour de l'axe de rotation (d), par l'intermédiaire d'au moins un premier élément de séparation, qui est formé au moins en partie par une première saillie formée sur au moins une première surface supérieure d'une première pale de roue de ventilateur, en un seul bloc avec la première pale de roue de ventilateur, et en ce que les particules vont être séparées, au moins en partie, lors de la rotation de la roue de ventilateur dans un deuxième sens de rotation opposé au premier sens de rotation, par l'intermédiaire d'au moins un deuxième élément de séparation qui est formé, au moins en partie, par une deuxième saillie formée sur au moins une deuxième surface supérieure, qui est dirigée à l'opposé de la première surface supérieure, de la première pale de roue de ventilateur, en un seul bloc avec la première pale de roue de ventilateur.
  15. Procédé selon la revendication 14, caractérisé en ce que
    un premier enfoncement est formé par la première saillie sur la deuxième surface supérieure et/ou un deuxième enfoncement est formé par la deuxième saillie sur la première surface supérieure, de sorte que de préférence le premier élément de séparation est en outre aussi formé par le deuxième enfoncement et/ou le deuxième élément de séparation est en outre formé aussi par le premier enfoncement, et/ou la première saillie, la deuxième saillie, le premier enfoncement et/ou le deuxième enfoncement est/ sont formés par modification de forme, estampage, refoulage, pliage, modification au laser, emboutissage et/ou torsion.
EP20090167655 2009-08-11 2009-08-11 Roue de ventilateur et appareil de cuisson Active EP2284401B1 (fr)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
EP20090167655 EP2284401B1 (fr) 2009-08-11 2009-08-11 Roue de ventilateur et appareil de cuisson

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EP2284401B1 true EP2284401B1 (fr) 2013-01-30

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EP4163553A1 (fr) 2021-10-08 2023-04-12 MA.TI.KA. S.r.l. Four au cuisson

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US1850545A (en) * 1929-08-08 1932-03-22 Standard Steel Works Grain blower
DE19751729C2 (de) * 1997-11-21 2002-11-28 Hermann Stahl Gmbh Lüfterrad
DE10239246C1 (de) 2002-08-22 2003-08-21 Rational Ag Lüfterrad mit integrierter Fettabscheidung, insbesondere für ein Gargerät
DE10315341C5 (de) 2003-04-03 2009-07-30 Mkn Maschinenfabrik Kurt Neubauer Gmbh & Co. Gargerät mit einem Gebläse mit Radialgebläserad und Abscheideelement

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