EP3770510B1 - Ventilateur pour une hotte aspirante et appareil combiné - Google Patents

Ventilateur pour une hotte aspirante et appareil combiné Download PDF

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Publication number
EP3770510B1
EP3770510B1 EP20182768.0A EP20182768A EP3770510B1 EP 3770510 B1 EP3770510 B1 EP 3770510B1 EP 20182768 A EP20182768 A EP 20182768A EP 3770510 B1 EP3770510 B1 EP 3770510B1
Authority
EP
European Patent Office
Prior art keywords
housing
air inlet
inlet opening
height
blower
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
EP20182768.0A
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German (de)
English (en)
Other versions
EP3770510A1 (fr
Inventor
Sebastien Flesch
Guillaume LAURENT
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP3770510A1 publication Critical patent/EP3770510A1/fr
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Publication of EP3770510B1 publication Critical patent/EP3770510B1/fr
Active 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
    • 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
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • 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
    • F05D2250/51—Inlet

Definitions

  • the present invention relates to a fan for an extractor device and a combination device with at least one extractor device.
  • EN 10 2015 213 471 A1 describes a fan module for an extractor device, which has a housing with a flow channel, wherein a sound-insulating element is arranged in the flow channel.
  • a connection piece can be provided in the area of the inlet opening. This connection piece can have a total extension of, for example, 0.3 to 2 cm in a direction parallel to the inflow direction.
  • US 5,601,400 A describes a centrifugal blower which may be used for example for an air conditioning system of a motor vehicle.
  • the housing defines a spiral duct and a centrifugal fan is provided in the housing.
  • the duct is arranged to reduce the size of a zone of lower air flow velocity which is formed in the upper radially outer region in the spiral duct.
  • the EN 20 2019 104 368 U1 describes a radial fan for an extractor hood with a spiral-shaped fan housing.
  • the WO9900601A1 describes a compact air blower assembly comprising a high speed brushless electric motor having a stator and a rotor, a centrifugal impeller having a solid wall extending radially outward from a shaft engaging hub, and a housing having a first portion supporting the electric motor and shaft bearings and a second portion preferably surrounding the first portion and forming a blower enclosure around a shaft extension having a centrally located air inlet and a peripherally located air outlet.
  • the impeller also forms a plurality of air-moving blades that project axially outward from the wall to edge portions that extend radially with the fan housing between the air inlet and the air outlet.
  • Combination devices are known in which a hob, for example an electric, induction or gas hob, is combined with an extractor fan, which can also be referred to as a table ventilation system. These combination devices are usually integrated into pieces of furniture, in particular base cabinets of kitchen units. Due to the structural limitations imposed by the pieces of furniture, the combination devices must be designed to be as compact as possible.
  • the blower which can also be referred to as a fan
  • filters in particular grease filters and odor filters
  • the grease filters are usually designed as expanded metal filters, through which grease is filtered out of the air sucked in.
  • the maximum width and depth of the combination device is specified by the standard dimensions of the furniture industry.
  • the available installation space is also limited in terms of height, as storage space, particularly space for drawers, is usually provided underneath the combination device, which should be as large as possible, i.e. the combination device should encroach on this storage space as little as possible.
  • the fan of an extractor device in particular an extractor device of a combination device, usually comprises a motor that drives a fan wheel.
  • the axis of the motor and thus also of the fan wheel is usually vertical when installed.
  • the fan wheel is surrounded by a housing, which is also referred to as a fan housing.
  • the housing preferably has a spiral shape and the housing is therefore also referred to as a spiral housing.
  • the housing serves as an air guide in the fan to an air outlet.
  • the object of the present invention is to provide a solution by means of which the available installation space for a fan can be used optimally and in which the extractor device can still be operated reliably.
  • the object is achieved by a blower for an extractor device, the blower having the features of claim 1.
  • the blower can also be referred to as a fan or ventilator.
  • the blower represents a blower for an extractor device.
  • An extractor device is a device by means of which contaminated air can be sucked in and cleaned.
  • the blower comprises a fan wheel, a motor and a housing. According to the invention, it is also possible for the blower to have several fan wheels and/or several motors. However, the invention is described below with reference to a blower with a fan wheel and a motor.
  • the fan wheel can also be referred to as an impeller.
  • the fan wheel has blades on its outer circumference, which are also referred to as rotor blades.
  • the blades can extend radially from the outer circumference of the fan wheel at least partially inwards or outwards.
  • the blades are arranged on the fan wheel in such a way that they extend parallel to the axis of the fan wheel.
  • the motor that drives the fan wheel is preferably located on the axis of the fan wheel.
  • the axis of the fan wheel therefore usually corresponds to the axis of the motor and is also referred to as such.
  • the blades extend in a direction parallel to this axis.
  • the blades can have a shape that is inclined to the parallel. In this case, the parallel extension is understood to be the main direction of the blades.
  • the blades have a curved cross-section for their function.
  • the housing has a spiral shape.
  • the outer circumference of the cross section of the housing perpendicular to the axis of the fan wheel corresponds to a logarithmic spiral.
  • At least one air inlet opening is provided in at least one axial side of the housing.
  • the axial sides are the sides that form the top or bottom of the housing in the axial direction of the motor.
  • an air inlet opening is provided in the top of the housing.
  • the axis of the motor lies in the air inlet opening, which means that the air inlet opening is placed centrally in the axial side.
  • An air inlet opening is an opening through which air can be sucked into the interior of the housing.
  • the housing has an air outlet that is provided on the radial circumference of the housing.
  • the air outlet is preferably formed by a nozzle that end of the spiral shape.
  • the air outlet can also be called a pressure nozzle.
  • the fan in an area that is radially outwardly offset from the air inlet opening has a lower housing height than at the air inlet opening.
  • Directional information such as top and bottom refer, unless otherwise stated, to a fan in the state installed in an extractor hood.
  • the height is understood to be the dimension in the axial direction.
  • the width is the dimension perpendicular to the height.
  • the direction perpendicular to the axis of the motor is referred to as radial.
  • the area of the housing in which it has a lower height is also referred to as the flat area or area of lower height.
  • the flat area preferably has a constant height.
  • the performance of the blower is determined by the geometry of the housing, in particular the height, the width and the shape of the spiral shape.
  • the housing has so far been designed according to rules and empirical values that dictate the construction of the housing.
  • the height of the housing and the width, i.e. the diameter, of the housing have an influence on the performance of the blower.
  • the height is determined by the height of the fan wheel, in particular the blades, the projection of the housing above the fan wheel, i.e. in the direction of the air inlet opening and the projection downwards, i.e. the projection of the housing above the fan wheel in the direction in which the motor is inserted into the housing.
  • These dimensions are in Figure 8 shown schematically using a conventional fan.
  • the height of the fan wheel cannot be reduced as this height is predetermined.
  • the fan can be installed in an installation space that has a height of 15 to 30 cm, for example.
  • the fan according to the invention can be used to connect other components of the fan or another part of a combination device, in particular the hob. without having to increase the height of the installation space.
  • the height of the housing in the flat area can be, for example, 1 to 5 cm less than at the air inlet opening.
  • the height of the housing at the air inlet opening can be, for example, 10 to 25 cm.
  • the area of lower height is located radially outside the fan wheel. This ensures that the required height for the blades of the fan wheel can be provided in the area of the air inlet opening. As already explained, the height of the blades cannot be changed.
  • the reduction in height is produced by a recess on the top and bottom of the housing.
  • the recess is formed by a step in the wall of the housing, which represents the top or bottom.
  • the recess extends over the entire circumference of the air inlet opening, which is preferably circular.
  • the recess is rounded at least inside the housing; thus, it does not form any sharp edges.
  • a recess is provided on both the top and bottom of the housing. The height of the housing is thus reduced from above and from below. This creates free space around the housing on both axial sides of the housing, i.e. at the top and bottom, in the specified installation space, which can be used for other components.
  • flow requirements inside the housing can also be taken into account, which will be explained in more detail later.
  • a recess is provided on both the top and bottom, and the recess on the top is larger than the recess on the bottom.
  • the air inlet opening is in the top of the housing. When air flows in through the air inlet opening in the top, the air is generally sucked by the fan wheel to the bottom of the housing. This creates a dead space in the area of the fan wheel that faces the top, i.e. in the upper area of the housing, in which there is no flow. In this dead space, no space needs to be made available inside the housing outside the fan wheel in order to ensure that the fan can draw in sufficient air. If the recess, i.e. the reduction in height, is chosen to be larger in the upper area of the housing than in the lower area, this does not impair the flow behavior in the housing and can still be used to create additional space for other components around the housing.
  • the recess on the upper side is greater than the axial distance between the air inlet opening and the axial edge of the blades facing the air inlet opening. This means that the recess on the upper side radially surrounds the upper part of the blades.
  • the cross-sectional area formed by the region of lower height along a cutting plane in which the axis of the motor lies corresponds to a cross-sectional area that is present at the same maximum height.
  • This cross-sectional area which is present radially outside the fan wheel in the housing, influences the volume flow in the fan and thus also the performance of the fan.
  • the preferred design of this cross-sectional area can ensure that the performance of the fan is not impaired.
  • the cross-sectional area formed by the region of lower height along a cutting plane in which the axis of the motor lies is at least the same size as the cross-sectional area which is present at the same highest height.
  • the cross-sectional area formed by the region of lower height along a cutting plane in which the axis of the motor lies is even larger than the cross-sectional area that would exist if the greatest height in this cutting plane remained the same.
  • the width of the housing is therefore increased.
  • the width is increased compared to a housing that is designed for performance with a constant maximum height.
  • the part of the kitchen furniture in which an extractor hood or a combination appliance is installed cannot be used for any other purpose on the sides and this installation space can therefore be used optimally thanks to the increased width and at the same time the performance of a fan according to the invention with a reduced height in some areas can be increased.
  • an air guide wall is formed on the air inlet opening, which extends radially and axially into the interior of the fan.
  • the air guide wall is preferably curved convexly inwards from the air inlet opening.
  • the air guide wall is particularly preferably formed as one piece with the further housing.
  • the air guide wall can also be referred to as a pavilion.
  • the air guide wall is particularly preferably an annular component, the largest diameter of which lies at the air inlet opening.
  • the axial distance between the inner end of the air baffle and the air inlet opening is greater than the axial distance between the air inlet opening and the axial edge of the blades facing it.
  • the air baffle dips into the fan wheel, in particular into the blades arranged in a ring on it.
  • the upper area of the housing near the air inlet opening is usually a dead space. The dipping of the air baffle into this area therefore does not hinder the flow. Nevertheless, By immersing the air baffle, a sufficiently long air baffle can be used without increasing the height of the housing.
  • the angle section can be 45°, for example.
  • the spiral course can be determined using the radii of the spiral calculated in this way.
  • the housing is preferably made of plastic.
  • reinforcing struts can be provided in the area of lower height of the fan on at least one axial side of the housing. This ensures sufficient stability of the housing without it taking up additional installation space.
  • At least one component in particular an electronic component of the fan, can be arranged in the area of lower height on at least one axial side of the housing.
  • the space requirement is also minimized in this embodiment.
  • other components for example parts of the hob, can also be arranged in the area of lower height.
  • the invention relates to a combination device comprising at least one blower according to the invention.
  • the combination appliance comprises a hob and an extractor device arranged below the hob with at least one fan.
  • One of the at least one air inlet opening is directed upwards.
  • a recess is provided in the hob or adjacent to the hob, through which air can be sucked in downwards by the fan. Since the air inlet opening is directed upwards, reliable suction of contaminated air from the space above the hob can be ensured.
  • the height of the housing of the fan is greater at the air inlet opening according to the invention, accidental entry of water or other liquids into the housing and thus into the fan can be prevented.
  • FIG 7 is a schematic perspective view of a fan according to the prior art.
  • the fan has a housing G which forms a spiral shape.
  • On an axial side of the housing G an air inlet opening is formed, into which an air guide wall F is inserted.
  • a fan wheel W is accommodated in the housing G.
  • the Fan wheel W is connected to and driven by motor M.
  • An air outlet LA is provided on the periphery of housing G, which forms the end of the spiral shape of housing G.
  • Figure 8 shows a schematic sectional view of such a blower.
  • the housing G has a height which is greater than the height of the fan wheel W accommodated therein.
  • the housing G has a width, i.e. a dimension perpendicular to the axis of the motor M, of which the radius R is shown in the figure.
  • FIG 1 an embodiment of a blower 1 according to the invention is shown.
  • the blower 1 has essentially the same structure as the blower 1 shown in Figures 7 and 8th shown blower G of the prior art.
  • the housing 2 of the blower 1 according to the invention is designed differently.
  • the motor 4 and the fan wheel 3 attached to it and driven by it are accommodated in the housing 2 in such a way that the motor 4 protrudes through the underside 22 of the housing 2.
  • Blades 30 are provided on the outer circumference of the fan wheel 3. These extend in a direction that is parallel to the axis of the motor 4 and thus of the fan wheel 3.
  • the housing 2 has a width in Figure 1 shown by the outer radius RGa, which is larger than the outer diameter, in Figure 1 shown by the outer radius RLa, of the fan wheel 3.
  • An air inlet opening 20 is provided in the top side 21 of the housing 2. This is preferably a round opening.
  • an air guide wall 23 is attached to the air inlet opening 20, which extends inward in the axial and radial direction into the housing 2.
  • the air guide wall 23 has a convex curvature.
  • a recess 24 is provided in the top 21 and the bottom 22 of the housing 2.
  • the outer region of the bottom 22 is at a higher level due to the recess 24.
  • the outer region of the top 21 is at a lower level due to the recess 24.
  • the housing 2 has a height HGa at its radially outer end and in the outer region.
  • the Housing 2 has a height HGG that is greater than HGa.
  • the free end of the air baffle 23 in the embodiment shown is at a distance AI to the lower end of the blades 30 and thus to the lower end of the fan wheel 3.
  • the height of the blades 30 HL and thus the height of the fan wheel 3 is greater than the distance AI.
  • the air baffle 23 projects into the fan wheel 3.
  • the distance RGI of the inner end of the air baffle 23 to the axis of the fan wheel 3 is smaller than the distance RLi of the inner side of the blades 30 to the axis of the fan wheel 3.
  • FIG 2 Further dimensions of the design of the fan 1 are given in Figure 1 shown. From the Figure 2 It follows that the amount HRoi by which the air baffle protrudes into the interior of the housing 2 is greater than the distance HRo between the air inlet opening 20 and the top 21 of the housing 2 in the flat area.
  • the distance HRo can also be referred to as the height of the recess 24 on the top 21.
  • the distance between the lower end of the housing 2 and the bottom 22 of the housing 2 in the flat area is HRu in Figure 2
  • the distance HRu can also be referred to as the height of the recess 24 on the underside 22.
  • the distance of the air inlet opening 20 in the radial direction from the axis of the motor is indicated by RGL.
  • This distance RGL is smaller than the distance RGa that the outer edge of the blades 30 has from the axis of the motor 4.
  • the blades 30 are covered upwards by at least part of the top 21 of the housing 2, in that the height changes between the height of the flat area HGa and the height of the housing 2 at the air inlet opening 20 HGG.
  • the distance RGFi at which the recess 24 on the bottom 21 lies from the axis is greater than the outer radius RGHa of the blades 30.
  • the flat area of the housing 2 extends from outside the fan wheel 3 to the outside of the housing 2.
  • FIG 3 the flow in a fan according to the invention is shown schematically.
  • the air flows from above through the air inlet opening and along the air guide wall.
  • the rotation of the fan wheel 30 sucks the air outwards. This creates a dead space T in the upper area of the fan below the air inlet opening outside the fan wheel, in which the recess on the top can be introduced according to the invention.
  • FIGS. 4 and 5 a comparison is shown between a fan according to the state of the art and a fan with a reduced cross-sectional area.
  • the cross-sectional areas Q1', Q2' are indicated, which in the fan according to the prior art with a continuous height of the fan, which corresponds to the height at the air inlet opening, exists between the outside of the fan wheel and the outside of the housing.
  • the corresponding cross-sectional areas Q1, Q2 are shown for a fan 1.
  • the cross-sectional areas Q1 and Q1 ⁇ are each smaller than the opposite cross-sectional area Q2 and Q2 ⁇ . This is due to the spiral shape of the housing 2.
  • Each of the cross-sectional areas Q1, Q2 represents a cross-sectional area that is flowed against by a jet that is sucked into the air inlet opening from one direction.
  • the cross-sectional areas Q1 and Q2 in the housing 2 each have a greater width and a lower height than the corresponding cross-sectional areas Q1' and Q2 ⁇ in the blower of the prior art.
  • the width must be increased in the housing according to the invention, in which the height is reduced due to the recesses 24 on the top 21 and bottom 22.
  • the development of the spiral can be increased accordingly so that the area per jet remains the same or is larger than the development in the prior art.
  • the curve can be output automatically and can, for example, be Figure 6 have the shape shown.
  • the distance of the housing above the fan wheel and the distance U below the fan wheel can be reduced.
  • recesses are preferably provided on the top and bottom.
  • the heights of the recesses HRo and HRu are >0.
  • HRo can be greater than the projection O of the housing above the top of the fan wheel and HRu can be greater than the projection U of the housing above the bottom of the fan wheel.
  • the present invention has a number of advantages.
  • the space HRo, HRu created by the reduced height, in particular by the recesses can be used as a rib area for reinforcing the housing.
  • the area created by the upper recess can also be used for component elements, in particular for electronic components of the fan or the hob.
  • the upper recess can also prevent water from flowing into the fan and especially to the motor.

Claims (11)

  1. Ventilateur pour un dispositif d'extraction de vapeurs comprenant une roue de ventilateur (3), un moteur (4) et un boîtier (2),
    dans lequel la roue de ventilateur (3) présente des pales (30) sur la périphérie extérieure de celle-ci, qui s'étendent parallèlement à l'axe de la roue de ventilateur (3), le boîtier (2) possède une forme de spirale et au moins un orifice d'admission d'air (20) est agencé dans au moins un côté axial du boîtier (2) et une sortie d'air est agencée à la périphérie radiale du boîtier,
    dans lequel le boîtier (2) a une hauteur plus petite (HGa) dans une région décalée radialement vers l'extérieur par rapport à l'orifice d'admission d'air (20) qu'au niveau de l'orifice d'admission d'air (20),
    caractérisé en ce que :
    la diminution de la hauteur est produite par un renfoncement (24) sur le côté axial du boîtier qui forme le côté supérieur (21) et dans lequel l'orifice d'admission d'air (20) est situé, lequel renfoncement s'étend sur la périphérie entière de l'orifice d'admission d'air (20), et sur l'autre côté axial du boîtier qui forme le côté inférieur (22) du boîtier (2),
    en ce que le renfoncement (24) est arrondi au moins vers l'intérieur du boîtier (2),
    en ce que la région de hauteur plus petite (HGa) est située radialement à l'extérieur de la roue de ventilateur (3) et débute au niveau de l'extrémité radialement extérieure des pales, et
    en ce que le renfoncement (24) sur le côté supérieur (21) est plus grand que le renfoncement (24) sur le côté inférieur (22).
  2. Ventilateur selon la revendication 1, caractérisé en ce que le renfoncement (24) sur le côté supérieur (21) est plus grand que la distance axiale entre l'orifice d'admission d'air (20) et le bord axial des pales (30) qui fait face à l'orifice d'admission d'air (20).
  3. Ventilateur selon l'une des revendications 1 ou 2, caractérisé en ce que la surface de section transversale (Q1, Q2) formée par la région de hauteur plus petite (HGa) le long d'un plan de coupe, dans lequel l'axe de la roue de ventilateur (3) est situé, correspond à une surface de section transversale (Q1', Q2') qui est à une hauteur maximale constante.
  4. Ventilateur selon la revendication 3, caractérisé en ce que la surface de section transversale de la région de hauteur plus petite (Q1, Q2) est supérieure à la surface de section transversale (Q1', Q2') qui est à une hauteur maximale constante.
  5. Ventilateur selon l'une des revendications 1 à 4, caractérisé en ce qu'une paroi de guidage d'air (23) est formée au niveau de l'orifice d'admission d'air (20), qui s'étend radialement et axialement vers l'intérieur du boîtier (2).
  6. Ventilateur selon la revendication 5, caractérisé en ce que la distance axiale entre l'extrémité intérieure de la paroi de guidage d'air (23) et l'orifice d'admission d'air (20) est supérieure à la distance axiale entre l'orifice d'admission d'air (20) et le bord axial des pales (30) orienté vers celui-ci.
  7. Ventilateur selon l'une des revendications 1 à 6, caractérisé en ce que le développement du rayon de la forme de spirale du boîtier (2) correspond à la formule Ln = Ln-1 + f + [n-1] x a, où L est le rayon de la spirale, n est le nombre des secteurs angulaires, en particulier de 45° et f et a sont des constantes.
  8. Ventilateur selon l'une des revendications 1 à 7, caractérisé en ce que le boîtier (2) est constitué de plastique et des entretoises de renfort sont disposées dans la région de hauteur plus petite (HGa), sur au moins un côté extérieur axial du boîtier (2).
  9. Ventilateur selon l'une des revendications 1 à 8, caractérisé en ce qu'au moins un composant, en particulier un composant électronique du ventilateur (1) est disposé dans la région de hauteur plus petite (HGa) sur au moins un côté extérieur axial du boîtier (2).
  10. Appareil combiné comprenant au moins un ventilateur selon l'une des revendications 1 à 9.
  11. Appareil combiné selon la revendication 10, caractérisé en ce que l'appareil combiné présente une table de cuisson et un dispositif d'extraction de vapeurs disposé en dessous de la table de cuisson comprenant au moins un ventilateur (1) et l'un des au moins un orifice d'admission d'air (20) est orienté vers le haut.
EP20182768.0A 2019-07-25 2020-06-29 Ventilateur pour une hotte aspirante et appareil combiné Active EP3770510B1 (fr)

Applications Claiming Priority (1)

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EP19290060 2019-07-25

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EP3770510A1 EP3770510A1 (fr) 2021-01-27
EP3770510B1 true EP3770510B1 (fr) 2024-04-17

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999000601A1 (fr) * 1997-06-26 1999-01-07 Turbodyne Systems, Inc. Ensemble soufflante compact a ensembles roues soufflantes interchangeables

Family Cites Families (3)

* Cited by examiner, † Cited by third party
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