EP2420738A1 - Unité de guidage d'air pour ouvertures d'aspiration d'une hotte aspirante - Google Patents

Unité de guidage d'air pour ouvertures d'aspiration d'une hotte aspirante Download PDF

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Publication number
EP2420738A1
EP2420738A1 EP11175899A EP11175899A EP2420738A1 EP 2420738 A1 EP2420738 A1 EP 2420738A1 EP 11175899 A EP11175899 A EP 11175899A EP 11175899 A EP11175899 A EP 11175899A EP 2420738 A1 EP2420738 A1 EP 2420738A1
Authority
EP
European Patent Office
Prior art keywords
baffle plate
air guide
passage opening
inflow
guide element
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
EP11175899A
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German (de)
English (en)
Other versions
EP2420738B1 (fr
Inventor
Dominik Abele
Dietmar Jordan
Ulmar Neumann
Thomas Wilde
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 Bosch und Siemens 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 Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2420738A1 publication Critical patent/EP2420738A1/fr
Application granted granted Critical
Publication of EP2420738B1 publication Critical patent/EP2420738B1/fr
Not-in-force 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

Definitions

  • the invention relates to an air guide unit for the intake opening of a fume hood.
  • a filter unit in which a Wrasenleitblech is combined with a grease filter to a filter unit.
  • a part of the Wrasenleitblechs forms a baffle region and this is surrounded by a Randabsaug Colour in which at least one passage opening is provided.
  • the Randabsaug Colour is inclined in this filter unit with respect to the impact area upwards.
  • a disadvantage of this filter unit is that it is necessary for a reliable supply of air, which is sucked through the hood, to the passage openings that they are at least partially in a vertical projection on the impact area outside the impact area. As a result, on the one hand, the visual impression of the filter unit is deteriorated and, on the other hand, flow losses can occur due to the direct flow of the grease filter.
  • Object of the present invention is therefore to provide an air guide, with which the flow losses during the influx of a filter element can be minimized.
  • the invention is based on the finding that this object can be achieved by an optimized inflow geometry to the passage openings and optimized positioning of the passages.
  • an air guide for the suction opening of an extractor hood which comprises a Wrasenleitblech having a baffle plate, at least one passage opening which lies above the baffle plate and a baffle plate at least partially surrounding Einströmgeometrie with at least one inflow surface.
  • the air guide element is characterized in that the inflow surface is inclined upward from the outer region of the Wrasenleitblechs in the direction of the passage opening.
  • Directional information relate, unless otherwise stated, to the air guiding element in an operating state used in an extractor hood with a horizontal intake opening. Also, angle information to the horizontal or information, such as horizontal or inclined to the horizontal, refer to the air guide in this mode.
  • an air guide element As an air guide element is referred to in the context of the invention, an element which has at least one passage opening for fumes and vapors and which is mounted in or on the intake of the hood and the vapors and fumes, which are sucked from the hood, to passages in the Air guiding element are passed.
  • the air guide element may have, in addition to the vapor guide plate, for example, one or more filter elements.
  • a filter element is provided separately in the extractor hood above the air guide element.
  • the Wrasenleitblech is according to the invention a one-piece component, which is preferably a metal sheet.
  • the shape of the Wrasenleitblechs in bottom view is preferably rectangular.
  • baffle plate a portion of the Wrasenleitblechs which is impermeable to air and by the direct entry of fumes and vapor into the suction port and a provided above the Wrasenleitblechs filter element is prevented.
  • the Einströmgeometrie refers to the part of the Wrasenleitblechs that leads except the baffle plate for a supply of vapors and fumes, which flow to the air deflector from below, to the passage openings.
  • the baffle plate and the Einströmgeometrie be generated by bending the material of the Wrasenleitblechs.
  • the Wrasenleitblech forms a three-dimensional geometry.
  • the passage openings can be introduced for example by punching before bending.
  • the passage openings are provided in the vicinity of the edge of the baffle plate above the baffle plate in the material of the Wrasenleitblechs.
  • through openings are introduced in the vicinity of all four edges of the baffle plate.
  • a plurality of passage openings are provided at each of the edges of the baffle plate in the vicinity of the edge, which are separated by webs.
  • the inflow surface is used according to the invention for the conduction of anströmendem Wrasen in the edge region of the Wrasenleitblechs to the passage openings of the Wrasenleitblechs.
  • the inflow angle with which the vapor reaches the passage opening is set via the inflow surface.
  • the inflow surface of the inflow geometry is aligned so that it extends from an edge of the Wrasenleitblechs to the passage opening upwards. Since the passage opening is also introduced above the baffle plate, the end of the inflow surface, which faces away from the edge of the Wrasenleitblechs, in a plane which lies above the plane of the baffle plate.
  • the inflow surface of the inflow geometry is inclined upwards in the direction of the passage opening, the amount of deflection which the inflowing vapor must perform in order to reach the passage opening can be minimized.
  • the passage opening can be arranged due to the Einströmgeometrie invention so that it is not readily visible to the user of the hood.
  • a filter element in the form of a filter mat or filter cassette is usually arranged above Wrasenleitblech as part of the air guide or as a separate component. This extends parallel to the baffle plate.
  • the construction height of the Wrasenleitblechs lower than in an air guide, in which a Anström Scheme is directed from an opening upwards by the inventive design of the air guide.
  • the height of the Wrasenleitblechs may be limited to the distance between the upper edge of the Anström materials and the plane of the baffle plate.
  • the lower edge of the inflow surface lies in the plane of the baffle plate or by a small amount above or below the plane of the baffle plate. In this way, the length of the inflow surface can be maximized and, moreover, a reliable supply of vapor to the passageways located above the impact plate is ensured.
  • the passage opening lies in perpendicular projection on the baffle plate in the surface of the baffle plate. This means that, when the top view of the underside of an air guiding element introduced into a horizontal intake opening of the extractor hood, only the baffle plate and a part of the inflow geometry are visible to the viewer. In particular, at least the inclined inflow surface of the Einströmgeometrie is visible. The view of the passage openings, however, is blocked by the baffle plate. This improves the visual impression of the air guide element, since the visible surfaces represent only continuous surfaces and thus the view of the arranged behind the Wrasenleitblech filter element is thus blocked.
  • the edge of the baffle plate provides a baffle extending upwardly from the baffle plate and the angle of inclination of the baffle to the horizontal is greater than or equal to the angle of inclination between the leading surface and the horizontal.
  • the guide surface serves to guide vapors which pass along the baffle plate to the inflow geometry which surrounds the baffle plate.
  • the guide surface is generated in particular by a bending up of the edge of the baffle plate by more than 90 °.
  • a Umströmkante is formed, which is preferably rounded, that is, has a radius of curvature greater than zero.
  • a Umströmkante with subsequent guide surface at the edge of the baffle plate on the one hand Wrasen, which passes from the baffle plate to the Einströmgeometrie, passed with small deflections to the passage opening.
  • the guide surface and a turbulence of vapor which is passed over the inflow surface to the passage opening, prevented.
  • the angle of inclination of the guide surface to the horizontal is small and may for example be in the range of 30-70 °, preferably in the range of 45 ° -60 °.
  • Flow simulations and practical measurements have shown that in particular with a rounded inflow edge and its outlet over the Guide surface at an oblique angle ⁇ of less than 60 °, preferably less than 45 ° to the filter element particularly low values for the flow losses and thus particularly good device volume flow values of the hood can be achieved.
  • the angle of inclination of the inflow surface to the horizontal is preferably less than the angle of inclination between the guide surface and horizontal and may for example be in the range of 20 to 60 °.
  • the surface of the inflow surface can be maximized.
  • a horizontal connection region which at least partially forms an inflow surface to form a passage opening, adjoins an inner end of the inflow surface.
  • the end of the inflow surface is referred to, which is spaced from the edge of the Wrasenleitblechs, that is, facing the baffle plate.
  • the inflow surface thus serves as an extension of the inflow surface, wherein the flow direction of vapor is changed from the inflow surface to the inflow surface, before the vapor enters through the passage opening in the air guide element.
  • the Einströmgeometrie is also tapered.
  • the length of the inflow surface that is to say the extent of the inflow surface inward, is however preferably kept low.
  • the passage opening preferably extends over a part of the connection area and over part of a transition area connecting the connection area with the baffle plate.
  • the transition region, in which the guide surface is formed, is inclined inwardly from the edge of the baffle plate.
  • the passage opening may be positioned so that the end of the passage opening in the transition region in perpendicular projection on the baffle plate closer to the edge of the baffle plate than the end of the passage opening in the connection region in vertical projection on the baffle plate. In this way, an escape of vapor, which gets along the inflow surface and the inflow surface to the passage opening, can be prevented downwards.
  • the two ends of the passage opening lie in vertical projection one above the other.
  • the Wrasenleitblech on two opposite edge regions each have an inflow surface.
  • the two edge regions on which the inflow surfaces are provided preferably represent the front and rear edge region of the Wrasenleitbleches with an air guide inserted into the intake of the hood.
  • the Einströmgeometrie may be limited to a horizontal inflow. It has been found that the provision of inflow surfaces at the front and rear edge of the Wrasenleitblechs are sufficient to reduce the flow losses at the air guide element so far that good volume flow values of the hood can be obtained.
  • an inflow surface can also be provided on all four edge regions of the Wrasenleitblechs.
  • This embodiment has the advantage that the supply of vapor to the passage openings on all four edges of the baffle plate is alike.
  • a converging on all sides obliquely to a rear or above the Wrasenleitbleches filter element is achieved.
  • a Wrasenleitblech in which only three edge regions of the baffle plate passage openings are provided.
  • an inflow surface may be provided at two opposite edge regions of the Wrasenleitblechs or at all four edge regions.
  • the advantage of the recess of passage openings on one side of the baffle plate is the possibility on this side grease or oil that accumulates in the Wrasenleitblech catch or at least prevent its dripping.
  • This embodiment is particularly preferred for extractor hood, in which the suction port is inclined to the horizontal. In these hoods, the air guide can be used so that the closed side of the baffle plate is directed to the rear. With the Einströmgeometrie according to the invention can still be ensured over the three sides provided with openings openings sufficient entry of vapors in the air guide.
  • the Wrasenleitblech is preferably formed by a one-piece, bent sheet.
  • the overall structure of the air guide element and thus also its production is simplified Moreover, in this embodiment, no separate connection elements, for example for connecting the baffle plate with the Einströmgeometrie required, which could lead to disturbance of the flow and thus turbulence of Wrasens.
  • the connection between the impact plate and the inflow surface can be effected via webs which are present between the passage openings. These webs are obtained by punching out the material in the region of the passage opening and are thus aligned with the guide surface and the inflow surface and obstruct the flow path of the vapor only directly at the inlet into the passage opening.
  • the air guide element comprises at least one filter element, which is held above the baffle plate.
  • the relative orientation of the individual surfaces of the Wrasenleitblechs can be set to the filter element already in the production of the air guide. An alignment of the filter element when inserting the air guide in the intake of the hood is therefore not required.
  • the air guide element has at least one flat filter element which is arranged parallel to the baffle plate. The filter element may, for example, rest on the upper side of the connection region and thus on the upper side of an inflow surface optionally formed in this region and be connected to the vapor guide plate.
  • the air guiding element 1 comprises a vapor guide plate 10 and a base element 2, of which only the connecting straps 21 are visible in the illustrated view.
  • the middle region of the Wrasenleitblechs 10 is formed by a baffle plate 11, which is a flat rectangular plate.
  • the baffle plate 11 is surrounded by a Einströmgeometrie 12.
  • the inflow geometry 12 comprises four inflow surfaces 120, which extend from the four edges of the Wrasenleitblechs 10 inwardly in the direction of the baffle plate 11.
  • the inflow surfaces 120 are adjoined in each case by an inflow surface 122.
  • the inflow surface 122 is connected to the baffle plate 11 via the Umströmkanten 14, which form the edges of the baffle plate 14.
  • FIG. 2 shown embodiment differs from the embodiment according to FIG. 1 merely in that only two inflow surfaces 120 are provided in the inflow geometry 12. These are located at the short edges of the Wrasenleitblechs 10. At the two long edges of the Wrasenleitblechs 10, only horizontal inflow surfaces 122 are provided. When inserted in an intake opening of an extractor hood (not shown), the short edges of the Wrasenleitblechs are at the front and the back of the intake port.
  • FIG. 3 is a schematic sectional view of the embodiment according to FIG. 2 shown. From this view, the structure of the Wrasenleitblechs 10 can be seen more accurately. From the outer edge of the Wrasenleitblechs 10 from an inflow surface 120 extends obliquely upward and merges into a horizontally extending connecting portion 121. The inclination angle ⁇ of the inflow surface 120 to the horizontal is preferably in a range of 20 ° to 60 °. The end of the connecting region 121, which faces away from the inflow surface 120, is bent downwards and outwards from the horizontal and merges into a transition region 140. This transition region 140 is at an inclination angle ⁇ to the connection region 121.
  • the inclination angle ⁇ is greater than or equal to the inclination angle ⁇ of the inflow surface 120.
  • the transition region 140 terminates at an inflow edge 14, which forms the edge of the impact plate 11.
  • the baffle plate 11 is aligned horizontally.
  • the baffle plate 11, the transition portion 140 and the connecting portion 121 together form a Z-shape.
  • the transition region 140 and the connecting portion 121 through openings 13 are introduced. These are separated from one another by webs 15 which extend over part of the length of the transition region 140 and the connecting region 121.
  • the passage openings 13 thus extend from the transition region 140 into the connection region 121.
  • the part of the transition region 140 which is not covered by the passage opening 13 forms a guide surface 141 and the part of the connection region 121 which is not covered by the passage opening 13
  • the end of the passage opening 13 located in the connection portion 121 lies farther inside the surface of the baffle plate, that is farther from the edge of the baffle plate 14 than the end of the passage opening 13, which lies in the transition region 140.
  • the two longitudinal ends of the passage opening 13 may also lie one above the other in a vertical projection.
  • the Umströmkante 14 of the baffle plate 11 is in a vertical projection on the connecting portion 121 in the inflow 122.
  • the Umströmkante 14 coincides in the vertical projection on the connecting portion 121 with the end of the inflow surface 120, that covers this.
  • FIG. 4 is a schematic, perspective sectional view of the embodiment of the air guide 1 according to FIG. 1 shown.
  • the structure of this embodiment substantially corresponds to that in FIG. 3 shown construction and will therefore not be explained again in detail.
  • Identical components of the two embodiments are provided with the same reference numerals.
  • each an inflow surface 120 is provided at the in FIG. 4 shown embodiment.
  • the basic element 2 of the spoiler 1 partially indicated. This represents in the illustrated embodiment, a frame into which a flat filter element (not shown) can be introduced. The filter element can be held in the frame and in particular abut against the top of the connection region.
  • connection tab 21 of the base element which extends through a side wall of the Wrasenleitblechs 10 therethrough, serves for fastening of the air guide element 1 in the suction opening of a fume hood.
  • connection tab can also be formed on the Wrasenleitblech 10 itself.
  • a basic element 2 according to the in FIG. 4 shown can also according to the embodiment Figures 2 and 3 be used.

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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)
EP11175899.1A 2010-08-17 2011-07-29 Hotte aspirante avec une unité de guidage d'air pour l'ouverture d'aspiration Not-in-force EP2420738B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010039408A DE102010039408A1 (de) 2010-08-17 2010-08-17 Luftleiteinheit für Ansaugöffnung einer Dunstabzugshaube

Publications (2)

Publication Number Publication Date
EP2420738A1 true EP2420738A1 (fr) 2012-02-22
EP2420738B1 EP2420738B1 (fr) 2019-03-06

Family

ID=44653156

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Application Number Title Priority Date Filing Date
EP11175899.1A Not-in-force EP2420738B1 (fr) 2010-08-17 2011-07-29 Hotte aspirante avec une unité de guidage d'air pour l'ouverture d'aspiration

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Country Link
EP (1) EP2420738B1 (fr)
DE (1) DE102010039408A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2772695A3 (fr) * 2014-06-27 2015-03-18 V-Zug AG Hotte aspirante
EP3336438A1 (fr) * 2016-12-19 2018-06-20 BSH Hausgeräte GmbH Récipient collecteur pour hotte aspirante

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015203671A1 (de) 2015-03-02 2016-09-08 BSH Hausgeräte GmbH Filtereinheit für eine dunstabzugshaube

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1624254A1 (fr) * 2004-08-04 2006-02-08 V-Zug AG Hotte d'aspiration à placer au-dessus d'un plan de cuisson
EP1705430A1 (fr) * 2005-07-04 2006-09-27 V-Zug AG hotte aspirante avec un filtre adipeux
DE102006055001A1 (de) * 2006-11-17 2008-05-21 Bohner Produktions Gmbh Dunstabsaugeinrichtung
DE102008020149A1 (de) 2008-04-22 2009-10-29 BSH Bosch und Siemens Hausgeräte GmbH Filtereinheit für eine Dunstabzugsvorrichtung und Dunstabzugsvorrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009002225A1 (de) * 2009-04-06 2010-10-07 BSH Bosch und Siemens Hausgeräte GmbH Wrasenleitblech für eine Filtereinheit einer Dunstabzugsvorrichtung
DE102009059836A1 (de) * 2009-12-21 2011-06-22 BSH Bosch und Siemens Hausgeräte GmbH, 81739 Filtereinheit für eine Dunstabzugshaube und Dunstabzugshaube

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1624254A1 (fr) * 2004-08-04 2006-02-08 V-Zug AG Hotte d'aspiration à placer au-dessus d'un plan de cuisson
EP1705430A1 (fr) * 2005-07-04 2006-09-27 V-Zug AG hotte aspirante avec un filtre adipeux
DE102006055001A1 (de) * 2006-11-17 2008-05-21 Bohner Produktions Gmbh Dunstabsaugeinrichtung
DE102008020149A1 (de) 2008-04-22 2009-10-29 BSH Bosch und Siemens Hausgeräte GmbH Filtereinheit für eine Dunstabzugsvorrichtung und Dunstabzugsvorrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2772695A3 (fr) * 2014-06-27 2015-03-18 V-Zug AG Hotte aspirante
EP3336438A1 (fr) * 2016-12-19 2018-06-20 BSH Hausgeräte GmbH Récipient collecteur pour hotte aspirante

Also Published As

Publication number Publication date
EP2420738B1 (fr) 2019-03-06
DE102010039408A1 (de) 2012-02-23

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