EP2857758A1 - Dispositif d'aspiration de vapeur - Google Patents

Dispositif d'aspiration de vapeur Download PDF

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Publication number
EP2857758A1
EP2857758A1 EP14182061.3A EP14182061A EP2857758A1 EP 2857758 A1 EP2857758 A1 EP 2857758A1 EP 14182061 A EP14182061 A EP 14182061A EP 2857758 A1 EP2857758 A1 EP 2857758A1
Authority
EP
European Patent Office
Prior art keywords
fan
housing
extractor
filter element
extraction device
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.)
Granted
Application number
EP14182061.3A
Other languages
German (de)
English (en)
Other versions
EP2857758B1 (fr
Inventor
Anna Brossmann
Michael HEGENDÖRFER
Robert Hibelt
Christoph Häusig
Thomas Kotlinski
Daniel Metz
Klaus-Heiner Rutsch
Peter Schlotmann
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 EP2857758A1 publication Critical patent/EP2857758A1/fr
Application granted granted Critical
Publication of EP2857758B1 publication Critical patent/EP2857758B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F24C15/2035—Arrangement or mounting of filters

Definitions

  • the invention relates to a fume extraction device.
  • a disadvantage of these known extractor hoods is that due to the flow conditions in the extractor hoods, in which the filters are used, in particular the noise and the energy consumption are increased.
  • the invention is therefore based on the object to provide a fume extraction device, in which the disadvantages of the prior art can be solved.
  • the invention is based on the finding that this object can be achieved by at least one filter element being part of a blower, by means of which pressure conditions can be set for the flow through the filter element.
  • the object is therefore achieved by an extractor device, wherein the extractor device comprises a housing and at least one at least partially air-permeable filter element.
  • the extractor device is characterized in that the extractor device comprises at least one fan which is at least partially surrounded by the housing, and the at least one filter element forms at least a part of at least one fan blade of the fan.
  • the extractor device according to the invention refers to a device by means of which at least a part of impurities can be removed from fumes and vapors. Steam and vapor are also referred to below as contaminated air. Particular preference is given to removing liquid and particulate contaminants and odorous substances from the vapors and steams by means of the extractor device according to the invention. According to the invention, the extractor device is understood to be the entire device by means of which the contaminants are removed.
  • the extractor device can be installed in an extractor hood or designed as an extractor hood.
  • the extractor device comprises at least one housing and at least one at least partially air-permeable filter element.
  • housing an at least partially closed container for influencing the flow in the extractor device is referred to.
  • the housing preferably has a cylindrical shape and is open at the top and bottom.
  • the upper side is also referred to as the clean air side and the lower side as the inflow side.
  • a filter element of the part of the extractor device is referred to, where the actual separation or separation of impurities from the vapors and fumes takes place.
  • the extractor device is characterized in that it comprises at least one fan.
  • the fan is according to the invention at least partially surrounded by the housing.
  • the blower generates the necessary for the inventive cleaning of the vapors and fumes air flow in the extractor device. According to the invention, therefore, the provision of an additional fan outside the housing is not required.
  • the fan of the extractor device is a fan that works on the principle of an axial fan.
  • the air to be cleaned is moved by the blower in a direction parallel to the axis of the blower, which is also referred to as the blower axis.
  • the housing preferably extends parallel to the axis of the fan.
  • the housing can, as will be described below, also take on other functions. Particularly preferably, the housing extends over at least part of the height of the fan and surrounds the circumference of the fan in this area.
  • the inner diameter of the housing preferably corresponds to the outer diameter of the fan, that is, the radially outer ends of the fan blades are in close proximity to the inside of the housing. This can prevent the flow of contaminated air past the outside of the fan.
  • At least one filter element forms at least a part of at least one blower blade of the blower.
  • the fan may according to the invention comprise one or more fan blades. These are attached to a fan axis.
  • the fan axis is preferably driven by a motor.
  • the at least one fan blade extends in the radial direction from the fan axis.
  • At least part of a fan blade is formed according to the invention by a filter element.
  • Each filter element is at least partially permeable to air.
  • the air duct in the extractor device can be made through the filter element in a targeted manner.
  • the air duct in the extractor device is due to the housing and at least partially received blower in a direction parallel to the fan axis, the passage of air through the fan blades is at least in the area where they are formed by a filter element supported.
  • At least one fan blade of at least one filter element which is preferably connected via at least one connecting element with the axis of the fan.
  • the connecting element can act on the edge of the filter element and also serve to connect the filter elements with each other.
  • the connection of the filter element with the connecting element or the connection of the connecting element with the fan axis is preferably detachable.
  • the one or more connecting elements preferably engage only at the edge of the filter element which faces the fan axis. If a fan blade is formed by a plurality of filter elements, the connecting element may additionally rest against the contact edge of the adjacent filter element. Preferably, however, lies at least the outer radial edge of the filter element in the radially outer edge of the fan blade, that is not closed by a connecting element or a frame.
  • the angle of attack of the fan blade is greater than zero and less than 90 °, and preferably between 10 ° and 80 °.
  • the angle of attack is referred to in the context of the invention, the angle which exists between the main flow direction of the air entering the extractor device and the fan blade, in particular the chord of the fan blade. Since the main flow direction is parallel to the axis of the blower in the extractor device according to the invention, the angle of attack between the axis of the blower and the fan blade, in particular the underside of the fan blade, is referred to as the angle of attack.
  • the angle of attack can remain the same over the height of the extractor device, but can also increase or decrease with increasing distance from the inflow side.
  • the at least one fan blade represents a twisted blade.
  • a twisted blade is understood as meaning, in particular, a blade which extends in a spiral around the fan axis.
  • the Contact surface of the blade on the fan axis is therefore a spiral shape.
  • the fan blade may extend in this embodiment in the radial direction straight from the fan axis. Due to the twisted shape of the fan blade on the one hand, a turbulence of the incoming air to the fan axis can be effected. On the other hand, the passage of air through the fan blade, in particular by the filter elements in the fan blade, favors in this form of fan blade.
  • the fan blade according to the invention can thus have an axial curvature. Additionally or alternatively, the fan blade may also have a radial curvature. In this case, a curvature of the blade in the radial direction is referred to as the radial curvature. By an additional radial curvature, the flow of the fan blade can be further supported.
  • the dimensions of the extractor device according to the invention are not limited to specific dimensions or ratios. According to one embodiment, however, the height of the extractor device is greater than the diameter of the extractor device. By this embodiment, the length over which air to be cleaned is guided in the axial direction on the fan blade or the fan blades can be maximized. But it can also be provided that the height of the extractor device is less than the diameter. In this case, the angle of attack of the fan blades is preferably selected to be smaller or the number of fan blades larger.
  • the cross section of the housing about the axis of the fan is completely covered by at least one filter element.
  • the filter element is a grease filter.
  • an expanded metal filter can serve as the grease filter.
  • a grease filter By forming at least part of at least one of the fan blades a grease filter, a number of advantages can be achieved become. For one thing, it is not necessary for the blower to be preceded by a filter element that represents a grease filter. As a result, the pressure to be built by the fan is reduced, whereby the energy consumption decreases and the noise can be reduced.
  • the particles deposited in the filter element in particular fat particles or drops, are transported radially outwards by the centrifugal force, which acts by rotation of the fan axis in the fan blades and thus the filter elements, and can be collected there or removed therefrom.
  • the extractor device with at least one grease filter as part of at least one fan blade on a self-cleaning effect The extractor device may for this purpose also have a collecting device for collecting impurities.
  • the collecting device may be provided in the housing or on the housing.
  • the filter element in addition to or as an alternative to the grease filter material, for example expanded metal, has at least one filter element comprising odor filter material, in particular activated carbon.
  • odor filter material in particular activated carbon.
  • the filter element which forms at least a portion of a fan blade of the blower, represents an odor filter, a subsequent switching of an odor filter after the blower is no longer necessary. As a result, the energy demand and noise are reduced again.
  • a filter element in which a grease filter with an odor filter material, in particular activated carbon added, wetted or otherwise connected.
  • the rotation of the axis of the fan forms a pressure difference between the opposite sides of the at least one fan blade.
  • the pressure difference can be influenced by suitable choice of the angle of attack, the speed, the height of the extractor device as well as by the curvature of the fan blade, in particular the axial curvature of the fan blade.
  • the pressure difference determines the delivery rate and thus also the filter effect of the extractor device.
  • the speed is according to the invention preferably below 1400 U / min, preferably below 600 U / min and may even be below 200 U / min.
  • At least the at least one fan blade is at least partially removable from the extractor device.
  • at least the filter element which forms at least a part of the fan blade, can be removed from the extractor device.
  • the fan blade or at least the filter element is detachably connected to the fan axis.
  • the fan axis can be removed with the attached fan blades from the housing of the extractor device.
  • the extractor device is an extractor hood.
  • the housing surrounding the fan preferably forms the outer housing of the extractor hood.
  • the electrical and electronic components of the hood are provided, such as the motor for operating the fan.
  • the housing may for example have doors, by means of which the access to the internal fan is made possible.
  • the housing preferably has a holder, by means of which the housing can be fastened to a mounting wall, in particular a kitchen wall. If filter elements are provided in the extractor device which serve as a grease filter and as an odor filter, then the extractor hood can be operated as a circulating air hood.
  • the inflow side and the clean air side of the housing are in this case preferably covered with an engagement guard.
  • the blower is completely housed in the housing in this embodiment.
  • the extractor hood therefore has a cylindrical shape and is an extractor hood with a compact design.
  • the extractor devices can optionally be accommodated in an additional housing. However, an additional fan and additional filters are preferably not provided on the additional housing.
  • FIG. 1 an embodiment of a fume extractor 1 according to the invention is shown.
  • the extractor device 1 comprises a housing 2 and a blower 4.
  • the housing 2 represents a cylindrical housing.
  • a step is introduced in the outside of the housing 2.
  • the inside of the housing 2 has a cylindrical shape. Only at the lower edge, a collecting channel 24 is formed in the inside of the housing 2 in the illustrated embodiment, which extends from the inside of the housing 2 inwards. This gutter 24 will be discussed later with reference to FIG FIG. 3 described in more detail.
  • the housing 2 is open at its top and bottom. The housing 2 is traversed by air, which flows to the extractor device 1 in a main flow direction S from below.
  • the underside of the housing 2 and thus the extractor device 1 is therefore referred to as the inflow side A and the top as the clean air side R.
  • mesh guard 21 is provided in the top and bottom of the housing 2 .
  • the lateral surface of the housing 2 is formed in the illustrated embodiment by a housing wall 23, which forms part of the circumference of the housing 2, and a housing frame 20 and doors 22.
  • two doors 22 are provided, which can be pivoted relative to the housing wall 23 to the outside.
  • the housing 2 is in FIG. 1 in an opened state in which the doors 22 are pivoted outwardly.
  • a blower 4 is provided inside the housing 2.
  • the fan 4 consists of a fan axis 40 and attached to the fan axis 40 fan blades 41.
  • the fan blades 41 each consist of two filter elements 30 which are connected to one another and to the fan axis 40 via a connecting element 5.
  • the fan blades 41 are mounted on the fan axis 40 so that they have an angle of attack ⁇ . This angle ⁇ represents the angle subtended between the main flow direction S and the surface of the fan blade 41. Since the main flow direction S is parallel to the fan axis 40, the angle of attack ⁇ is the angle between the fan axis 40 and the fan blade 41.
  • Each of the filter element 30 has an intricate shape in the illustrated embodiment, which means that the filter element 30 has a curvature in its height, that is, in the axial direction.
  • the fan blades 41 have no curvature in the radial direction.
  • the underside of the lower filter element 30 is located in the illustrated embodiment in the immediate vicinity of the lower mesh guard 21 and the upper edge is held in the connecting element 5.
  • FIG. 2 is the extractor device 1 according to the embodiment according to FIG. 1 shown without filter elements.
  • the connecting element 5 has an inclined H-shaped cross-section. Between the upper legs of the H-shape, the lower edge of the upper filter element 30 and between the lower legs of the H-shape, the upper edge of the lower filter element 30 can be accommodated.
  • the Fasteners 5 are attached to the fan axis 40 and extend in the radial direction to the outside.
  • the connecting elements 5 are in this case arranged inclined to the fan axis 40.
  • the inclination of the connecting elements 5 corresponds to the angle of attack ⁇ .
  • the connecting elements 5 are fixed in the middle of the height of the fan axis 40 at this.
  • mounting openings 42 are provided in the fan axis 40 in the lower area and in the upper area. By means of these attachment openings 42, the ends of the filter elements 30, which are remote from the connecting element 5, are fastened to the fan axis 40.
  • a total of five connecting elements 5 are provided so that ten filter elements 30 can be accommodated.
  • the present invention is not limited to the illustrated arrangement and attachment of the filter elements 30 or to the number of filter elements 30 per fan blade 41.
  • the filter elements 30 can also be fastened with their inner edge directly to the fan axis 40 or the connecting elements can have a different form from the illustrated shape.
  • the connecting elements may be rails that extend helically at the fan axis 40 in the angle of attack.
  • the fan blade 41 may be formed, for example, by a single filter element 30.
  • the fan axis 40 is rotated by a motor (not shown). As a result, the air entering the housing 2 via the inflow side A is set into a spiral movement. By the rotation of the fan axis 40 and the fan blades 41 are rotated about the axis 40. As a result, 2 pressure conditions are formed in the housing, in which there is a pressure difference between the two surfaces of a fan blade 41. In particular, there is a lower pressure on the upper surface than on the lower surface of the fan blade 41.
  • the fan blades 41 are at least partially formed by the filter elements 30, and they are permeable to air, air can pass through the filter elements 30 and thus through the fan blades 41. This is in FIG. 4 schematically indicated by the block arrows. The passage of the air through the filter elements 30 is through the existing pressure difference still supported. By the passage of air through the filter elements 30 impurities are removed from the air.
  • the filter element 30 is designed as a grease filter, for example made of expanded metal, in particular solid and liquid contaminants, such as grease and other liquid particles, are deposited on the filter element 30.
  • the impurities thus deposited are transported radially outward in the filter element 30 by the centrifugal force generated by the rotation of the fan axis 40.
  • the contaminants can escape.
  • the impurities drop either directly downwards or are thrown against the cylindrical inside of the housing 2 and run down to this.
  • a collecting channel 24 is preferably provided on the housing 2, which extends over the circumference of the housing 2 and is inclined to the horizontal.
  • a collecting container 25 is provided in the deepest region of the collecting channel 24, a collecting container 25 is provided.
  • the collecting channel 24 in the inside of the housing frame 20, the doors 22 and a part of the housing wall 23 is formed.
  • the collecting container 25 may in this case be provided in the region of the housing wall 23.
  • a filter frame 31 is provided on the undersides of the lower filter elements 30, which forms a radially upwardly from the fan axis 40 extending upwardly open rail.
  • the filter frame 31 may be attached to the fan axis 40 or, for example, plugged into one of the mounting holes 42 in the fan axis 40.
  • the filter frame 31 serves to hold the filter element 30 and can additionally serve to collect impurities. As a result, dripping down of the impurities downward from the extractor device 1 can be prevented.
  • FIG. 5 is the embodiment of the extractor device of FIGS. 1 and 2 shown in the closed state.
  • a box-shaped holder 6 is provided in this box-shaped approach to the cylindrical housing 2, the collecting container 25th be provided.
  • the box-shaped projection 6 can serve for example for fastening the extractor device 1 to a mounting wall.
  • a motor for the fan may be provided for example in the holder 6.
  • the extractor device 1 shown in the figures can be used as an extractor hood. Since both a fan and filter elements are provided in the extractor device 1, it is not necessary to take the extractor device in a further extractor housing, are provided in the blower and other filter elements.
  • the extractor device 1 therefore represents an extractor hood.
  • the housing 2 can also be configured in one piece, that is, have no doors.
  • the top or the bottom of the housing is designed so that the user can take over one of these pages access to the filter elements.
  • the entire fan axis with the filter elements provided thereon can be removed upwards or downwards out of the housing.
  • only one door, instead of the two doors shown may be provided on the housing.
  • the present invention provides a way to remove cooking odors and grease from cooking fumes and vapors.
  • An extractor hood formed by the extractor device is preferably operated in a recirculation mode, that is, the cleaned by the extractor air is discharged from the extractor device, that is the extractor hood back into the room in which the extractor hood or hood is operated.
  • This room is preferably a kitchen.
  • vanes also referred to as fan blades, which are positioned about a vertical axis, also referred to as the fan axis and made of expanded metal and activated carbon, for example, are used in the extractor device.
  • the blades are rotated at a low speed within a housing, which may also be referred to as a drum. Air is transported upwards and filtered at the same time.
  • the technical principle is based on a modification of classic axial blowers.
  • Axial blower can not build high pressures, which are in the context of the present invention but also not necessary, since there are neither upstream nor downstream filter.
  • the filtering takes place during the flow through the blade surface itself, due to pressure difference between the blade sides.
  • the present invention has a number of advantages over known extractor devices and extractor hoods.
  • the flow in the housing is deflected only slightly from the main flow direction of the air. Therefore, in the present invention, there are no strong deflections and constrictions of the flow which would occur with radial blowers. As a result, less flow noise is generated with the extractor device according to the invention.
  • the motor via which the blower of the extractor device according to the invention is driven, runs at low speeds. For example, speeds less than 200rpm may be set instead of 1400rpm as with radial blowers while still providing adequate filtering. This also reduces the noise generated. In addition, the energy consumption is reduced in the extractor device according to the invention.
  • the filter elements of the extractor device are approximately self-cleaning, as collected by the centrifugal force, the filtered fat and condensate on the filter edge, from where it is thrown against the drum wall.
  • Water and fat can be collected in a collection container, which can also be referred to as a shell.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP14182061.3A 2013-09-13 2014-08-25 Dispositif d'aspiration de vapeur Active EP2857758B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013218419.0A DE102013218419A1 (de) 2013-09-13 2013-09-13 Dunstabzugsvorrichtung

Publications (2)

Publication Number Publication Date
EP2857758A1 true EP2857758A1 (fr) 2015-04-08
EP2857758B1 EP2857758B1 (fr) 2017-05-03

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EP14182061.3A Active EP2857758B1 (fr) 2013-09-13 2014-08-25 Dispositif d'aspiration de vapeur

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EP (1) EP2857758B1 (fr)
DE (1) DE102013218419A1 (fr)
ES (1) ES2630382T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017186432A1 (fr) * 2016-04-26 2017-11-02 BSH Hausgeräte GmbH Appareil de cuisine comportant une plaque de cuisson et un dispositif d'aspiration et procédé de fonctionnement du dispositif d'aspiration
EP3358260A1 (fr) * 2017-02-07 2018-08-08 BSH Hausgeräte GmbH Dispositif de hotte aspirante doté d'élément filtrant
EP3358261A1 (fr) * 2017-02-02 2018-08-08 BSH Hausgeräte GmbH Dispositif formant hotte aspirante à filtre à odeur et procédé de régénération de filtres à odeur
CN110822523A (zh) * 2019-11-25 2020-02-21 佛山市顺德区美的洗涤电器制造有限公司 过滤组件和油烟净化装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110822524B (zh) * 2019-11-25 2021-04-27 佛山市顺德区美的洗涤电器制造有限公司 过滤组件和油烟净化装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837543A1 (de) * 1978-08-28 1980-03-13 Miguel Kling Dunstabzugsvorrichtung
US5681364A (en) * 1995-08-03 1997-10-28 Fortune; William S. Rotating element fume collection apparatus
EP1102620A1 (fr) * 1998-07-30 2001-05-30 Minnesota Mining And Manufacturing Company Dispositif de filtration a absorbant mobile
GB2448522A (en) * 2007-04-18 2008-10-22 Avon Polymer Prod Ltd Gas adsorption air filtering fan
DE102007051942A1 (de) * 2007-10-29 2009-04-30 Boiting, Hans-Hermann, Prof. Luftabsaugvorrichtung
CN202267108U (zh) * 2011-08-16 2012-06-06 刘瑛 环保循环式吸油烟机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837543A1 (de) * 1978-08-28 1980-03-13 Miguel Kling Dunstabzugsvorrichtung
US5681364A (en) * 1995-08-03 1997-10-28 Fortune; William S. Rotating element fume collection apparatus
EP1102620A1 (fr) * 1998-07-30 2001-05-30 Minnesota Mining And Manufacturing Company Dispositif de filtration a absorbant mobile
GB2448522A (en) * 2007-04-18 2008-10-22 Avon Polymer Prod Ltd Gas adsorption air filtering fan
DE102007051942A1 (de) * 2007-10-29 2009-04-30 Boiting, Hans-Hermann, Prof. Luftabsaugvorrichtung
CN202267108U (zh) * 2011-08-16 2012-06-06 刘瑛 环保循环式吸油烟机

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017186432A1 (fr) * 2016-04-26 2017-11-02 BSH Hausgeräte GmbH Appareil de cuisine comportant une plaque de cuisson et un dispositif d'aspiration et procédé de fonctionnement du dispositif d'aspiration
EP3358261A1 (fr) * 2017-02-02 2018-08-08 BSH Hausgeräte GmbH Dispositif formant hotte aspirante à filtre à odeur et procédé de régénération de filtres à odeur
EP3358260A1 (fr) * 2017-02-07 2018-08-08 BSH Hausgeräte GmbH Dispositif de hotte aspirante doté d'élément filtrant
CN110822523A (zh) * 2019-11-25 2020-02-21 佛山市顺德区美的洗涤电器制造有限公司 过滤组件和油烟净化装置
CN110822523B (zh) * 2019-11-25 2021-08-31 佛山市顺德区美的洗涤电器制造有限公司 过滤组件和油烟净化装置

Also Published As

Publication number Publication date
DE102013218419A1 (de) 2015-03-19
EP2857758B1 (fr) 2017-05-03
ES2630382T3 (es) 2017-08-21

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