EP3574265A1 - Extractor hood - Google Patents

Extractor hood

Info

Publication number
EP3574265A1
EP3574265A1 EP18700571.5A EP18700571A EP3574265A1 EP 3574265 A1 EP3574265 A1 EP 3574265A1 EP 18700571 A EP18700571 A EP 18700571A EP 3574265 A1 EP3574265 A1 EP 3574265A1
Authority
EP
European Patent Office
Prior art keywords
flow channel
extractor hood
air
air supply
supply opening
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
EP18700571.5A
Other languages
German (de)
French (fr)
Other versions
EP3574265B1 (en
Inventor
Stefan Schabinger
Stefan Kratzmeier
Dirk Kesel
Andreas Thumm
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
Priority to PL18700571T priority Critical patent/PL3574265T3/en
Publication of EP3574265A1 publication Critical patent/EP3574265A1/en
Application granted granted Critical
Publication of EP3574265B1 publication Critical patent/EP3574265B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGESĀ ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGESĀ ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2035Arrangement or mounting of filters

Definitions

  • the present invention relates to an extractor hood.
  • the extractor hoods for example, over a stove, extracted air is loaded with impurities such as water, grease, oil and the like.
  • the object of the present invention is therefore to provide an extractor hood in which the deposition of particles on the extractor hood is reduced.
  • the invention is based on the finding that this object can be achieved by providing at least one air supply opening on the extractor hood, through which air enters the flow channel and influences the vapor stream in the extractor hood.
  • the object is therefore achieved by an extractor hood comprising a fan, at least one filter element, a baffle plate and a housing, which forms at least part of a flow space, which comprises a flow channel with a Randabsaugungs Scheme having at least one inlet opening.
  • the extractor hood is characterized in that at least one air supply opening is arranged in the region of at least one deflection point of the flow channel.
  • a fume extraction device is referred to, which is used in the home, especially in a kitchen for removing and cleaning cooking fumes, which are also referred to as vapors.
  • the extractor hood represents, for example, a ceiling-mounted or a wall-mounted extractor hood.
  • the extractor hood has a housing which can also be referred to as a viewing hood. In the bottom of the housing, a suction port is introduced.
  • the housing forms at least part of a flow space.
  • the fan of the hood which is also referred to as a fan, arranged in the flow space.
  • a negative pressure is generated, which serves for the suction of contaminated air, from around and in particular from below the extractor hood.
  • Contaminated air also referred to as vapor, may enter the cooker hood via the suction port located in the bottom of the housing.
  • the extractor hood has at least one filter element on which the contaminated air can be cleaned.
  • the at least one filter element preferably represents a filter element for filtering out particles, in particular of grease, oil or water particles.
  • the filter element preferably represents a planar element whose one surface at least partially serves for the admission of contaminated air into the filter material.
  • a filter material according to the invention for example, expanded metal can be used.
  • the filter element is received in a frame.
  • the frame can additionally serve for fastening the filter element in the extractor hood.
  • the at least one filter element is preferably detachably arranged in the extractor hood and in particular in the housing.
  • the filter element is preferably a filter cartridge and is also referred to as a grease filter.
  • the extractor hood includes a baffle plate.
  • the baffle plate is an air-impermeable component, which is preferably a disc or plate.
  • the baffle plate is arranged in or below the suction opening of the housing of the extractor hood.
  • the baffle plate also serves as a deflecting element, which prevents the uncontrolled and direct, that is to say immediate, influx of the at least one filter element through wafers flowing from below to the extractor hood.
  • the baffle plate therefore preferably covers an area which is larger than the area of the filter element or, in the case of several filter elements, the filter elements.
  • the baffle plate preferably has a size which is smaller than the size of the suction opening of the housing. Between the bottom of the housing and the edge of the baffle plate thus a gap is formed, which is also referred to as Randabsaugspalt or Randabsaug Symposium.
  • the housing forms at least part of a flow space.
  • the flow space comprises a flow channel.
  • the region of the extractor hood is referred to as a flow channel which lies between the edge suction region and the at least one filter element provided in the housing.
  • the flow channel is limited by the housing and the baffle plate.
  • the housing limits the flow channel to the sides and upwards and the baffle plate limits the flow channel downwards.
  • the housing at least partially forms the flow channel of the flow space of the extractor hood.
  • the vapor is directed within the extractor hood and in particular within the housing to the at least one filter element.
  • the flow channel comprises an edge suction area.
  • the edge evacuation area is defined by the gap between the housing and the baffle plate.
  • the Randabsaugungs Scheme web or other connecting means may be provided.
  • the entire Randabsaug Scheme forms the inlet opening and thus can enter the inside of the hood over the entire Randabsaug Colour vapor. Since the Randabsaug Scheme forms part of the flow channel, the vapor can thus enter the flow channel.
  • the flow channel extends from the inlet opening of the Randabsaugungs Schemees to the at least one filter element.
  • At least one deflection point is formed in the flow channel.
  • a deflection point a point in the flow channel is referred to, at which the flow direction of the vapor is changed in the flow channel.
  • the deflection point is determined by the geometry of the flow channel itself.
  • the geometry of the flow channel depends on the geometry of the housing in interaction with the baffle plate.
  • Particularly preferred as a deflection point is the point at which occurs due to the geometry of the flow channel, the first change in direction of the Wrasens within the flow channel. Further changes in direction in the flow channel can be done for example by the negative pressure generated by the blower. However, these changes in direction are not caused by the geometry of the flow channel and thus do not constitute a deflection point in the sense of the invention.
  • an air supply opening is provided in the region of at least one deflection point.
  • the air supply opening is provided on the flow channel in the region which lies at the deflection point or in the flow direction after the deflection point.
  • a corner or a curvature of the housing may be present, by which the direction change of the Wrasenstroms is effected.
  • the air supply opening is a recess in the sense of the present invention.
  • the air supply opening is a hole or a slot. The shape of the hole or slot can be chosen freely.
  • more than one air supply opening may be provided in the region of the deflection point of the flow channel.
  • the air which enters the flow channel through the air supply opening may be exhaust air or ambient air.
  • the flow of fumes is advantageously influenced by the entry of air into the flow channel.
  • the vapor is deflected more effectively than in the devices which are known in the art, and thus directed to the filter element.
  • the air entering through the air supply opening captures particles passing from the vapor and thus also prevents deposition of the particles in the flow channel and in particular on the housing of the extractor hood. This overall improves the fat label of the cooker hood.
  • the deposition of visible grease in the intake area is avoided, thus increasing customer satisfaction. It is also advantageous that the formation of Fettan- collections is avoided in an area from which the fat could drip down through the inlet opening of the hood down to the stove.
  • the air supply opening is arranged at a distance from the inlet opening of the edge suction area.
  • Spaced in the sense of the present invention means that the air supply opening and the inlet opening are not arranged in the immediate vicinity of each other and therefore have no points of contact.
  • An advantage of this embodiment is that this causes the vapor to enter the flow channel only via the inlet opening before it is influenced by the air entering the flow channel through the air supply opening.
  • the distance that the vapor, which has passed through the inlet opening of the Randabsaugrios, up to the deflection point in the flow channel travels back into account. Accordingly, it is ensured that the vapor is influenced only in the region of the deflection point by the occurred air and not already for example when entering the vapor in the flow channel.
  • the exhaust duct may be a pipe or a duct which is perpendicular or parallel to the flow duct.
  • the region of the extractor hood is referred to as an exhaust air duct, which adjoins the filter element in the flow direction.
  • the blower of the extractor hood is arranged in the exhaust duct.
  • the Exhaust duct has an outlet opening through which the exhaust air can be discharged to the outside.
  • the exhaust air in the room in which the cooker hood is operated, or outside the building in which the hood is operated are delivered.
  • the exhaust duct can be at least partially formed by the housing of the hood.
  • the exhaust air duct can also be formed by a separate component, for example a pipe, which can be clad in a forge, for example, by a chimney.
  • the air supply opening is a bypass between the exhaust air duct and the flow channel.
  • the bypass connects the exhaust air duct fluidly with the flow channel.
  • a part of the exhaust air from the exhaust air duct can be passed into the flow channel via the bypass. Since the bypass forms the air supply opening, the exhaust air is introduced in the region of the deflection in the flow channel.
  • An advantage of using the exhaust air as supply air, which is introduced to prevent deposits in the flow channel, is that the flow of exhaust air is forced through the blower and this flow can therefore be used in a simple manner for supplying the exhaust air into the flow channel ,
  • the bypass can be realized by a separate component, such as a pipe.
  • the exhaust air duct is arranged above the flow channel and adjacent thereto.
  • the flow channel and the exhaust air channel run parallel at least in some areas and have at least one contact point.
  • at least a part of the flow channel lies in the horizontal and the exhaust air duct is located on the horizontal part of the flow channel.
  • the exhaust duct in this embodiment therefore extends horizontally and the outlet opening of the extractor hood is preferably provided on the side of the extractor hood.
  • the advantage of this embodiment is that in this case a bypass between the exhaust air duct and the flow channel can be produced in a simple manner. By the two channels are adjacent to each other, the distance that must be overcome for the supply of a portion of the exhaust air to the vapor in the flow channel, low.
  • the exhaust duct and the flow channel are separated by an intermediate wall.
  • the intermediate wall is a planar component and preferably represents a plate or a sheet metal.
  • the intermediate wall can, according to the present invention, consist of a sheet metal material, in particular of stainless steel sheet.
  • the advantages of the present invention can be used particularly easily.
  • the distance between the exhaust air duct and the flow channel is given in this embodiment only by the intermediate wall.
  • the intermediate wall separates the flow space into two regions, namely into the exhaust air duct and into the flow duct.
  • the intermediate wall forms the top of the flow channel and the bottom of the exhaust duct.
  • the exhaust duct is limited in this embodiment up through the top of the housing.
  • the intermediate wall may be part of the housing or be incorporated as a separate component in the housing.
  • the air supply opening is arranged in the intermediate wall.
  • the air supply opening serves as a bypass between the exhaust duct and the flow channel.
  • the air supply opening is provided as a recess in the form of a hole or slot in the intermediate wall.
  • the air supply opening is introduced, for example, by punching or lasing in the material of the intermediate wall.
  • Outgoing air duct are discharged from the fan in a horizontal direction to the outside and the flow of the vapor in the flow channel can be directed in the horizontal direction to the filter element.
  • the part of the exhaust air which enters the flow channel via the air supply opening thus preferably enters the flow channel in the vertical direction through the air supply opening. It is also advantageous that a part of the exhaust air can be selectively reintroduced into the flow channel through the connection between the exhaust air duct and flow channel by means of an air supply opening in an intermediate wall and thus can influence the vapor. Due to the pressure differences between the exhaust air duct and the flow channel, the entry of part of the exhaust air into the flow channel is favored. This part of the exhaust air, which serves as supply air, generates a flow, which passes in the Wrasen
  • the air supply opening is designed as an air scoop.
  • the air scoop is an air supply opening, at the inlet side of which an air guide element is arranged. Air from a flow along the scoop is directed to the air supply opening via the air guiding element.
  • the air supply opening is an air scoop, thus the supply of air to the flow channel in the region of the deflection favored and thus reduces the deposition of particles or completely prevented.
  • the air scoop may be provided on an outer wall of the housing and may pass a portion of the ambient air into the flow channel.
  • the air scoop is formed between the exhaust air duct and the flow channel and is machined out of the material of the intermediate wall.
  • the working out of the scoop from the material of the intermediate wall takes place, for example, that in the material of the intermediate wall, which is usually sheet, an opening or a slot is cut, lasered or stamped and then the material in the region of the opening or of the slot is bent upwards. Since the exhaust air duct is preferably above the flow channel and in particular above the intermediate wall, the upwardly bent material protrudes into the exhaust air duct.
  • the upwardly bent portions of the machined material of the intermediate wall form protrusions, which may have a tab-like shape.
  • the tab is aligned so that it against the flow direction of the exhaust air in the exhaust duct is directed and thus a part of the exhaust air is detected by the scoop and directed into the air supply opening.
  • An advantage of this embodiment is that the air scoop can be made in a simple manner and a reliable supply of exhaust air in the flow channel allows light.
  • At least one of the filter elements is accommodated in the intermediate wall between the exhaust air duct and the flow duct.
  • a filter element is referred to, which is surrounded by the intermediate wall.
  • the outer edge of the intermediate wall is in a perpendicular projection on the filter element outside the edge of the flat filter element, that is, the surface of the filter element is surrounded by the inner edge of the intermediate wall in a vertical projection.
  • the intermediate wall extends laterally beyond the edges of the filter element, forwards and backwards. The intermediate wall thus forms a flat frame around the flat filter element.
  • the filter element below the intermediate wall or on the intermediate wall.
  • the intermediate wall has a passage opening, which is covered by the filter element.
  • the air supply opening is arranged at a distance from the at least one filter element.
  • An advantage of this embodiment is that the flow, which is generated by the entry of air through the air supply opening in the flow channel, can influence the vapor before it passes through one of the filter elements and is cleaned. As a result, it can be ensured that during the deflection of the vapor flow in the flow channel, a separation of particles from the intermediate wall or the housing can be reduced or avoided.
  • the air supply opening is arranged in an outer wall of the housing. An advantage of this embodiment is that the air supply opening establishes a connection between the environment of the extractor hood, that is the space in which the extractor hood is operated, and the flow channel.
  • the exhaust duct may extend vertically upwards and be blinded for example by a chimney.
  • the outer wall, in which the at least one air supply opening is introduced may be one or more of the side walls of the housing and / or the top of the housing.
  • the air supply opening is arranged so that it extends through the outer wall and ends in the interior of the housing in the flow channel.
  • the air supply opening may be oriented horizontally, vertically or inclined.
  • the flow channel is narrowed at the location of the air supply opening.
  • a negative pressure is set by the narrowing of the flow channel at the location of the air supply opening. This negative pressure draws in ambient air or exhaust air and enters the flow channel.
  • This embodiment of the flow channel is particularly advantageously used in an extractor hood, in which the air supply opening is introduced in an outer wall of the housing. Since the ambient air has no defined flow direction, an intake flow from the environment can be generated by the negative pressure generated by the constriction or taper and thus the reliable supply of air at the deflection point in the flow channel can be ensured.
  • 1 shows a schematic perspective view of a region of an extractor hood according to the invention with a flow channel and an air supply opening according to a first embodiment
  • 2 shows a schematic detail view of a region of an inventive
  • Extractor hood with a flow channel and an air supply opening according to a second embodiment 3 shows a schematic perspective view of a region of an extractor hood according to the invention with a flow channel and an air supply opening according to a third embodiment;
  • FIG. 4 shows a schematic perspective view of a region of an extractor hood with a flow channel according to the prior art.
  • FIG. 1 shows a region of an extractor hood according to the invention with a first embodiment of an air supply opening 16 in a flow channel 12. In the view shown only the left half of the housing 1 of the hood is shown.
  • the extractor hood comprises a fan 13, which is arranged in the interior of the housing 1.
  • a suction opening is provided in the central region by a baffle plate 15.
  • a Randabsaug Scheme is formed by having an inlet opening 121, which preferably extends over the entire Randabsaug Colour.
  • an intermediate wall 14 is provided in the housing 1 in the embodiment shown.
  • the intermediate wall 14 may be formed as part of the housing 1, that is to be configured integrally with the housing 1. However, it is also within the scope of the invention that the intermediate wall 14 is a separate component which is fastened in the housing 1.
  • the intermediate wall 14 is parallel to the baffle plate 15.
  • a filter element 140 is received in the middle region of the intermediate wall 14 below the blower 13.
  • an air supply opening 16 is introduced in the outer region of the intermediate wall 14 in the outer region of the intermediate wall 14, an air supply opening 16 is introduced.
  • an outlet opening 17 is introduced in the upper region of the side wall of the housing 1.
  • a flow space 10 is formed in the housing 1.
  • the flow space 10 includes an exhaust duct 1 1 and a flow channel 12.
  • the exhaust duct 1 1 is bounded below by the intermediate wall 14 and up through the top of the housing 1.
  • the flow channel 12 is bounded above by the intermediate wall 14 and down through the baffle plate 15. To the sides of the flow channel is bounded by the side wall of the housing 1.
  • the intermediate wall 14 separates in the illustrated embodiment, the exhaust duct 1 1 of the flow channel 12.
  • the exhaust duct 1 1 extends from the filter element 140 to the outlet opening 17 and the flow channel from the inlet opening 121 of the Randabsaug Kunststoffes to the filter element 140th
  • the blower 13 is disposed in the exhaust duct 1 1. Via the fan 13, a negative pressure is generated in the flow channel 12, which is used for sucking contaminated air, which is also referred to as vapor W, from around and in particular from below the extractor hood.
  • the baffle plate 15 prevents direct inflow of the filter element 140 in the extractor hood by vapors.
  • the vapor W is instead conducted along the underside of the baffle plate 15 to the inlet opening 121 of the Randabsaugungs Kunststoffs the flow channel 12.
  • the entered vapor W is passed through the flow channel 12 to a filter element 140 through which it passes and is cleaned.
  • the exhaust air A due to the flow set by the blower 13 in the horizontal direction, is discharged through the outlet opening 17 to the outside.
  • the flow channel 12 has a deflection point 120 at which the flow direction of the vapor W is changed.
  • the deflection point 120 is a region of the flow channel 12, on the basis of the geometry of the flow channel 12, a change in direction of the flowing in the flow channel 12 Wrasens W takes place.
  • the geometry of the flow channel 12 is defined by the interaction of the housing 1 and in the illustrated embodiment of the intermediate wall 14 with the baffle plate 15.
  • an air supply opening 16 is arranged in the form of a bypass 160.
  • the bypass 160 is a mismatch in the intermediate wall 14 designed.
  • the bypass 160 thus establishes a connection between the exhaust air duct 1 1 and the flow channel 12.
  • a part of the exhaust air A can enter the flow channel 12 in a targeted manner. Due to the flow generated by the part of the exhaust air A in the flow channel 12, passing particles in the vapor W can be detected and thus prevented or at least reduced, that particles are deposited on the intermediate wall 14.
  • FIG. 2 shows a region of an extractor hood according to the invention with a second embodiment of an air supply opening.
  • some components of the extractor hood according to the invention are only partially shown or indicated.
  • the construction of the extractor hood according to Figure 2 corresponds to that of the embodiment of Figure 1 and is therefore not explained again.
  • the only difference between the embodiments of FIG. 1 and FIG. 2 is the design of the air supply opening 16.
  • the bypass is used as an air scoop
  • the air scoop 1600 is machined out of the material of the intermediate wall 14. As shown in Figure 2, an opening is cut in the intermediate wall 14 such that a portion of the material in the opening can be bent upwardly. The upwardly bent part of the material of the intermediate wall 14 protrudes into the exhaust duct 1 1.
  • the upwardly curved material of the intermediate wall 14 defines a kind of deflection in the exhaust duct 1 1.
  • the exhaust air A is directed through the air scoop 1600 partially into the flow channel 12.
  • a flow of the exhaust air A, which enters the flow channel 12 favors.
  • FIG. 3 shows a region of an extractor hood according to the invention with a third embodiment of an air supply opening.
  • FIG. 3 generally shows the same components as FIG. 1 and these are therefore not explained again.
  • the air supply opening 16 is not arranged in the intermediate wall 14 but in an outer wall of the housing 1 of the hood.
  • ambient air U can enter the flow channel 12.
  • the flow channel 12 is narrowed in the illustrated view at the location of the air supply opening 16.
  • this embodiment represents a passive variant. Due to the narrowing of the flow channel 12 in the illustrated embodiment, a negative pressure is established, which attracts the ambient air U. As a result, the ambient air U enters the flow channel 12 and can detect particles in the vapor W, as a result of which they are not deposited or are deposited on the intermediate wall 14 or the housing 1 in a reduced manner.
  • FIG. 4 shows a flow channel 12 of a vapor extraction hood according to the prior art.
  • FIG. 4 shows that the vapor W enters through the inlet opening 121 of the edge suction region of the flow channel 12. The vapor W is deflected in the flow channel 12, whereby the flow direction of the vapor W is changed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Separating Particles In Gases By Inertia (AREA)

Abstract

The present invention relates to an extractor hood comprising a fan (13), at least one filter element (140), a baffle plate (15), and a housing (1) which forms at least one portion of a flow chamber (10) having a flow channel (12) with an edge suction region which has at least one inlet opening (150). The extractor hood is characterised in that at least one air-inflow opening (16) is located in the region of at least one deflection point (120) of the flow channel (12).

Description

Dunstabzugshaube Ā Hood
Die vorliegende Erfindung bezieht sich auf eine Dunstabzugshaube. Die von Dunstabzugshauben, beispielsweise Ć¼ber einem Kochherd, abgesaugte Luft ist mit Verunreinigungen, wie Wasser, Fett, Ɩl und dergleichen beladen. The present invention relates to an extractor hood. The extractor hoods, for example, over a stove, extracted air is loaded with impurities such as water, grease, oil and the like.
Es sind Dunstabzugshauben bekannt, bei denen die zu reinigende Luft Ć¼ber einen Randspalt in die Dunstabzugshaube eingesaugt wird. Hierbei sind unterschiedliche Ansaug- spaltkonstruktionen bekannt. Beispielsweise kann eine Luftumlenkung um 90Ā° umgesetzt sein, die der Luftstrom ausfĆ¼hrt, bevor dieser zu einem Filterelemente in der Dunstabzugshaube gelangt. Durch die hohe Geschwindigkeit im Ansaugraum sowie durch die Umlenkung der Luft, kommt es zur Partikelabscheidung am GerƤt. Durch MassentrƤgheitseffekte wird vermehrt an den AuƟenseiten des Luftstroms an der Stelle, an der der Luftstrom umgelenkt wird, abgeschieden. Der Abscheidungsort hƤngt von der eingestellten Luftgeschwindigkeit, insbesondere der eingestellten GeblƤsestufe, ab und kann durch Tests detektiert werden. Die dort abgelagerten Partikel werden bei der Fettmessung als Gewichtszunahme des GerƤtes gewertet. Dadurch verschlechtert sich das Fettlabel massiv. Besonders kritisch ist dieses Fett, da es sich grĆ¶ĆŸtenteils im sichtbaren Bereich abla- gert. Abgesehen von einer Herabsetzung der Optik des GerƤtes, kann es zu Tropfenbildung und zum Abtropfen auf einen unter der Dunstabzugshaube angeordneten Herd kommen. Aktuell sind keine MaƟnahmen zur Vermeidung dieser Art der Fettablagerung bekannt. Aufgabe der vorliegenden Erfindung ist es daher eine Dunstabzugshaube bereitzustellen, bei der die Abscheidung von Partikeln an der Dunstabzugshaube verringert wird. There are fume hoods are known in which the air to be cleaned is sucked through an edge gap in the hood. Here, different suction gap constructions are known. For example, an air deflection can be implemented by 90 Ā°, which performs the air flow, before it reaches a filter elements in the hood. Due to the high speed in the suction chamber as well as the deflection of the air, particle separation occurs on the device. Due to inertia effects is increasingly deposited on the outer sides of the air flow at the point at which the air flow is deflected. The place of deposition depends on the set air velocity, in particular the set blower level, and can be detected by tests. The particles deposited there are evaluated in the fat measurement as weight gain of the device. As a result, the fat label deteriorates massively. This grease is particularly critical because it mostly deposits in the visible range. Apart from a reduction in the appearance of the device, it can lead to dripping and dripping on a arranged under the hood cooker. Currently, no measures to avoid this type of fat deposition are known. The object of the present invention is therefore to provide an extractor hood in which the deposition of particles on the extractor hood is reduced.
Der Erfindung liegt die Erkenntnis zugrunde, dass diese Aufgabe gelƶst werden kann, indem an der Dunstabzugshaube mindestens eine Luftzufuhrƶffnung vorgesehen ist, durch die Luft in den Strƶmungskanal eintritt und den Wrasenstrom in der Dunstabzugshaube beeinflusst. ErfindungsgemƤƟ wird die Aufgabe daher gelƶst durch eine Dunstabzugshaube umfassend ein GeblƤse, zumindest ein Filterelement, eine Prallplatte und ein GehƤuse, welches zumindest einen Teil eines Strƶmungsraum bildet, der einen Strƶmungskanal mit einem Randabsaugungsbereich, der mindestens eine Eintrittsƶffnung aufweist, umfasst. Die Dunstabzugshaube ist dadurch gekennzeichnet, dass im Bereich mindestens einer Um- lenkstelle des Strƶmungskanals mindestens eine Luftzufuhrƶffnung angeordnet ist. The invention is based on the finding that this object can be achieved by providing at least one air supply opening on the extractor hood, through which air enters the flow channel and influences the vapor stream in the extractor hood. According to the invention, the object is therefore achieved by an extractor hood comprising a fan, at least one filter element, a baffle plate and a housing, which forms at least part of a flow space, which comprises a flow channel with a Randabsaugungsbereich having at least one inlet opening. The extractor hood is characterized in that at least one air supply opening is arranged in the region of at least one deflection point of the flow channel.
Richtungsangaben, wie oben und unten beziehungsweise Oberseite und Unterseite beziehen sich, soweit nicht anders angegeben, auf eine Dunstabzugshaube mit einem horizontal in der Dunstabzugshaube angeordneten Strƶmungskanal und deren Teile. Directional information, such as above and below or top and bottom, unless otherwise stated, refer to an extractor hood with a flow channel arranged horizontally in the extractor hood and its parts.
Als Dunstabzugshaube wird erfindungsgemƤƟ vorzugweise eine Dunstabzugsvorrichtung bezeichnet, die im Haushalt, insbesondere in einer KĆ¼che zum Entfernen und Reinigen von KochdĆ¼nsten verwendet wird, die auch als Wrasen bezeichnet werden. Die Dunstabzugshaube stellt beispielsweise eine deckenmontierte oder eine wandmontierte Dunstab- zugshaube dar. Die Dunstabzugshaube weist ein GehƤuse auf, das auch als Sichthaube bezeichnet werden kann. In der Unterseite des GehƤuses ist eine Ansaugƶffnung eingebracht. As an extractor hood according to the invention preferably a fume extraction device is referred to, which is used in the home, especially in a kitchen for removing and cleaning cooking fumes, which are also referred to as vapors. The extractor hood represents, for example, a ceiling-mounted or a wall-mounted extractor hood. The extractor hood has a housing which can also be referred to as a viewing hood. In the bottom of the housing, a suction port is introduced.
Das GehƤuse bildet im Sinne der vorliegenden Erfindung zumindest einen Teil eines Strƶmungsraumes. Vorzugsweise ist das GeblƤse der Dunstabzugshaube, welches auch als LĆ¼fter bezeichnet wird, in dem Strƶmungsraum angeordnet. Durch das GeblƤse wird ein Unterdruck erzeugt, der zum Ansaugen verunreinigter Luft, von um und insbesondere von unterhalb der Dunstabzugshaube, dient. Die verunreinigte Luft, die auch als Wrasen bezeichnet wird, kann Ć¼ber die Ansaugƶffnung, die in der Unterseite des GehƤuses ange- ordnet ist, in die Dunstabzugshaube eintreten. For the purposes of the present invention, the housing forms at least part of a flow space. Preferably, the fan of the hood, which is also referred to as a fan, arranged in the flow space. By the blower, a negative pressure is generated, which serves for the suction of contaminated air, from around and in particular from below the extractor hood. Contaminated air, also referred to as vapor, may enter the cooker hood via the suction port located in the bottom of the housing.
Weiterhin weist die Dunstabzugshaube zumindest ein Filterelement auf, an dem die verunreinigte Luft gereinigt werden kann. Das mindestens eine Filterelement stellt vorzugsweise ein Filterelement zum Ausfiltern von Partikeln, insbesondere von Fett-, Ɩl- oder Wasserpartikeln dar. Das Filterelement stellt vorzugsweise ein flƤchiges Element dar, dessen eine OberflƤche zumindest teilweise fĆ¼r den Einlass von verunreinigter Luft in das Filtermaterial dient. Als Filtermaterial kann erfindungsgemƤƟ beispielsweise Streckmetall zum Einsatz kommen. Bevorzugt ist das Filterelement in einem Rahmen aufgenommen. Der Rahmen kann zusƤtzlich zur Befestigung des Filterelements in der Dunstabzugshaube dienen. Das mindestens eine Filterelement ist vorzugsweise lƶsbar in der Dunstabzugshaube und insbesondere in dem GehƤuse angeordnet. Das Filterelement stellt vorzugsweise eine Filterkassette dar und wird auch als Fettfilter bezeichnet. Weiterhin umfasst die Dunstabzugshaube eine Prallplatte. Im Sinne der vorliegenden Erfindung stellt die Prallplatte ein luftundurchlƤssiges Bauteil dar, welches vorzugsweise eine Scheibe oder Platte ist. Die Prallplatte ist in oder unterhalb der Ansaugƶffnung des GehƤuses der Dunstabzugshaube angeordnet. Die Prallplatte dient auch als Umlenkelement, das das unkontrollierte und direkte, das heiƟt unmittelbare, Anstrƶmen des mindes- tens einen Filterelements durch von unten zu der Dunstabzugshaube strƶmenden Wra- sen, verhindert. Die Prallplatte deckt daher vorzugsweise eine FlƤche ab, die grĆ¶ĆŸer als die FlƤche des Filterelementes oder bei mehreren Filterelementen den Filterelementen ist. Die Prallplatte weist vorzugsweise aber eine GrĆ¶ĆŸe auf, die kleiner als die GrĆ¶ĆŸe der Ansaugƶffnung des GehƤuses ist. Zwischen der Unterseite des GehƤuses und dem Rand der Prallplatte wird somit ein Spalt gebildet, der auch als Randabsaugspalt oder Randabsaugbereich bezeichnet wird. Furthermore, the extractor hood has at least one filter element on which the contaminated air can be cleaned. The at least one filter element preferably represents a filter element for filtering out particles, in particular of grease, oil or water particles. The filter element preferably represents a planar element whose one surface at least partially serves for the admission of contaminated air into the filter material. As a filter material according to the invention, for example, expanded metal can be used. Preferably, the filter element is received in a frame. The frame can additionally serve for fastening the filter element in the extractor hood. The at least one filter element is preferably detachably arranged in the extractor hood and in particular in the housing. The filter element is preferably a filter cartridge and is also referred to as a grease filter. Furthermore, the extractor hood includes a baffle plate. For the purposes of the present invention, the baffle plate is an air-impermeable component, which is preferably a disc or plate. The baffle plate is arranged in or below the suction opening of the housing of the extractor hood. The baffle plate also serves as a deflecting element, which prevents the uncontrolled and direct, that is to say immediate, influx of the at least one filter element through wafers flowing from below to the extractor hood. The baffle plate therefore preferably covers an area which is larger than the area of the filter element or, in the case of several filter elements, the filter elements. However, the baffle plate preferably has a size which is smaller than the size of the suction opening of the housing. Between the bottom of the housing and the edge of the baffle plate thus a gap is formed, which is also referred to as Randabsaugspalt or Randabsaugbereich.
Das GehƤuse bildet zumindest einen Teil eines Strƶmungsraumes. Der Strƶmungsraum umfasst einen Strƶmungskanal. Im Sinne der vorliegenden Erfindung wird der Bereich der Dunstabzugshaube als Strƶmungskanal bezeichnet, der zwischen dem Randabsaugbereich und dem mindestens einen in dem GehƤuse vorgesehenen Filterelement liegt. Besonders bevorzugt wird der Strƶmungskanal durch das GehƤuse und die Prallplatte begrenzt. Das GehƤuse begrenzt dabei den Strƶmungskanal zu den Seiten und nach oben und die Prallplatte begrenzt den Strƶmungskanal nach unten. Somit bildet das GehƤuse zumindest teilweise den Strƶmungskanal des Strƶmungsraums der Dunstabzugshaube. The housing forms at least part of a flow space. The flow space comprises a flow channel. For the purposes of the present invention, the region of the extractor hood is referred to as a flow channel which lies between the edge suction region and the at least one filter element provided in the housing. Particularly preferably, the flow channel is limited by the housing and the baffle plate. The housing limits the flow channel to the sides and upwards and the baffle plate limits the flow channel downwards. Thus, the housing at least partially forms the flow channel of the flow space of the extractor hood.
Im Strƶmungskanal wird der Wrasen innerhalb der Dunstabzugshaube und insbesondere innerhalb des GehƤuses zu dem mindestens einen Filterelement gelenkt. ErfindungsgemƤƟ umfasst der Strƶmungskanal einen Randabsaugungsbereich. Der Randabsau- gungsbereich wird durch den Spalt zwischen dem GehƤuse und der Prallplatte definiert. In dem Randabsaugungsbereich kƶnnen Steg oder andere Verbindungsmittel vorgesehen sein. Der Teil des Randabsaugbereiches, der luftdurchlƤssig ist, das heiƟt, in dem beispielsweise keine Stege vorliegen, wird als Eintrittsƶffnung des Randabsaugbereiches bezeichnet. Es liegt aber auch im Rahmen der Erfindung, dass der gesamte Randabsaugbereich die Eintrittsƶffnung bildet und somit Wrasen Ć¼ber den gesamten Randabsaugbereich in das Innere der Dunstabzugshaube eintreten kann. Da der Randabsaugbereich einen Teil des Strƶmungskanals bildet, kann der Wrasen somit in den Strƶmungskanal eintreten. Vorzugsweise erstreckt sich der Strƶmungskanal von der Eintrittsƶffnung des Randabsaugungsbereiches bis zu dem mindestens einen Filterelement. In the flow channel, the vapor is directed within the extractor hood and in particular within the housing to the at least one filter element. According to the invention, the flow channel comprises an edge suction area. The edge evacuation area is defined by the gap between the housing and the baffle plate. In the Randabsaugungsbereich web or other connecting means may be provided. The part of the Randabsaugbereiches, which is permeable to air, that is, in which there are no webs, for example, as the inlet opening of the Randabsaugbereiches designated. However, it is also within the scope of the invention that the entire Randabsaugbereich forms the inlet opening and thus can enter the inside of the hood over the entire Randabsaugbereich vapor. Since the Randabsaugbereich forms part of the flow channel, the vapor can thus enter the flow channel. Preferably, the flow channel extends from the inlet opening of the Randabsaugungsbereiches to the at least one filter element.
In dem Strƶmungskanal ist mindestens eine Umlenkstelle ausgebildet. Als Umlenkstelle wird eine Stelle in dem Strƶmungskanal bezeichnet, an der die Strƶmungsrichtung des Wrasen in dem Strƶmungskanal geƤndert wird. ErfindungsgemƤƟ ist die Umlenkstelle bedingt durch die Geometrie des Strƶmungskanals selbst. Die Geometrie des Strƶmungskanals hƤngt von der Geometrie des GehƤuses im Zusammenspiel mit der Prallplatte ab. Besonders bevorzugt wird als Umlenkstelle die Stelle bezeichnet, an der aufgrund der Geometrie des Strƶmungskanals die erste RichtungsƤnderung des Wrasens innerhalb des Strƶmungskanals auftritt. Weitere RichtungsƤnderungen in dem Strƶmungskanal kƶnnen beispielsweise durch den durch das GeblƤse erzeugten Unterdruck erfolgen. Diese RichtungsƤnderungen sind dabei aber nicht durch die Geometrie des Strƶmungskanals hervorgerufen und stellen somit keine Umlenkstelle im Sinne der Erfindung dar. At least one deflection point is formed in the flow channel. As a deflection point, a point in the flow channel is referred to, at which the flow direction of the vapor is changed in the flow channel. According to the invention, the deflection point is determined by the geometry of the flow channel itself. The geometry of the flow channel depends on the geometry of the housing in interaction with the baffle plate. Particularly preferred as a deflection point is the point at which occurs due to the geometry of the flow channel, the first change in direction of the Wrasens within the flow channel. Further changes in direction in the flow channel can be done for example by the negative pressure generated by the blower. However, these changes in direction are not caused by the geometry of the flow channel and thus do not constitute a deflection point in the sense of the invention.
ErfindungsgemƤƟ ist im Bereich mindestens einer Umlenkstelle eine Luftzufuhrƶffnung vorgesehen. Besonders bevorzugt ist die Luftzufuhrƶffnung an dem Strƶmungskanal in dem Bereich vorgesehen, der an der Umlenkstelle oder in Strƶmungsrichtung nach der Umlenkstelle liegt. An der Umlenkstelle kann eine Ecke oder eine KrĆ¼mmung des GehƤuses vorliegen, durch die die RichtungsƤnderung des Wrasenstroms bewirkt wird. Die Luftzufuhrƶffnung ist im Sinne der vorliegenden Erfindung eine Aussparung. Vorzugsweise ist die Luftzufuhrƶffnung ein Loch oder ein Schlitz. Die Form des Loches oder des Schlitzes kann frei gewƤhlt werden. Im Sinne der vorliegenden Erfindung kann auch mehr als eine Luftzufuhrƶffnung im Bereich der Umlenkstelle des Strƶmungskanals vorgesehen sein. ErfindungsgemƤƟ kann die Luft, welche durch die Luftzufuhrƶffnung in den Strƶmungskanal eintritt, Abluft oder Umgebungsluft sein. According to the invention, an air supply opening is provided in the region of at least one deflection point. Particularly preferably, the air supply opening is provided on the flow channel in the region which lies at the deflection point or in the flow direction after the deflection point. At the deflection point, a corner or a curvature of the housing may be present, by which the direction change of the Wrasenstroms is effected. The air supply opening is a recess in the sense of the present invention. Preferably, the air supply opening is a hole or a slot. The shape of the hole or slot can be chosen freely. For the purposes of the present invention, more than one air supply opening may be provided in the region of the deflection point of the flow channel. According to the invention, the air which enters the flow channel through the air supply opening may be exhaust air or ambient air.
Indem bei der erfindungsgemƤƟen Dunstabzugshaube, mindestens eine Luftzufuhrƶffnung im Bereich mindestens einer Umlenkstelle eines Strƶmungskanals angeordnet ist, ergeben sich eine Reihe von Vorteilen. Zum einen wird durch den Eintritt von Luft in den Strƶmungskanal der Wrasenstrom vorteilhaft beeinflusst. Durch den Eintritt der Luft im Bereich der Umlenkstelle des Strƶmungskanals wird der Wrasen effektiver als in den Vorrichtungen, die im Stand der Technik bekannt sind, umgelenkt und somit zu dem Filterelement geleitet. Des Weiteren erfasst die durch die Luftzufuhrƶffnung eingetretene Luft vorbeiziehende Partikel aus dem Wrasen und verhindert somit auch eine Ablagerung der Partikel in dem Strƶmungskanal und insbesondere an dem GehƤuse der Dunstabzugshaube. Dadurch wird das Fettlabel der Dunstabzugshaube insgesamt verbessert. Des Weiteren wird die Ablagerung von sichtbarem Fett im Ansaugbereich vermieden und somit die Kundenzufriedenheit erhƶht. Weiterhin vorteilhaft ist, dass die Bildung von Fettan- Sammlungen in einem Bereich vermieden wird, von dem aus das Fett durch die Eintrittsƶffnung der Dunstabzugshaube nach unten auf den Herd tropfen kƶnnte. By arranging at least one air supply opening in the region of at least one deflection point of a flow channel in the extractor hood according to the invention, There are a number of advantages. On the one hand, the flow of fumes is advantageously influenced by the entry of air into the flow channel. By the entry of air in the region of the deflection of the flow channel, the vapor is deflected more effectively than in the devices which are known in the art, and thus directed to the filter element. Furthermore, the air entering through the air supply opening captures particles passing from the vapor and thus also prevents deposition of the particles in the flow channel and in particular on the housing of the extractor hood. This overall improves the fat label of the cooker hood. Furthermore, the deposition of visible grease in the intake area is avoided, thus increasing customer satisfaction. It is also advantageous that the formation of Fettan- collections is avoided in an area from which the fat could drip down through the inlet opening of the hood down to the stove.
GemƤƟ einer AusfĆ¼hrungsform der Dunstabzugshaube, ist die Luftzufuhrƶffnung beabstandet zu der Eintrittsƶffnung des Randabsaugungsbereichs angeordnet. According to one embodiment of the extractor hood, the air supply opening is arranged at a distance from the inlet opening of the edge suction area.
Beabstandet im Sinne der vorliegenden Erfindung bedeutet, dass die Luftzufuhrƶffnung und die Eintrittsƶffnung nicht in unmittelbarer NƤhe zueinander angeordnet sind und demnach keine BerĆ¼hrungspunkte aufweisen. Spaced in the sense of the present invention means that the air supply opening and the inlet opening are not arranged in the immediate vicinity of each other and therefore have no points of contact.
Vorteilhaft an dieser AusfĆ¼hrungsform ist, dass hierdurch der Wrasen erst Ć¼ber die Ein- trittsƶffnung in den Strƶmungskanal eintritt, bevor dieser durch die Luft, die durch die Luftzufuhrƶffnung in den Strƶmungskanal eintritt, beeinflusst wird. Somit kann dem Abstand, den der Wrasen, der durch die Eintrittsƶffnung des Randabsaugbereichs hindurch getreten ist, bis zu der Umlenkstelle im Strƶmungskanal zurĆ¼cklegt Rechnung getragen werden. Demnach ist gewƤhrleistet, dass der Wrasen erst im Bereich der Umlenkstelle durch die eingetretene Luft beeinflusst wird und nicht bereits beispielsweise beim Eintritt des Wrasen in den Strƶmungskanal. An advantage of this embodiment is that this causes the vapor to enter the flow channel only via the inlet opening before it is influenced by the air entering the flow channel through the air supply opening. Thus, the distance that the vapor, which has passed through the inlet opening of the Randabsaugbereichs, up to the deflection point in the flow channel travels back into account. Accordingly, it is ensured that the vapor is influenced only in the region of the deflection point by the occurred air and not already for example when entering the vapor in the flow channel.
Bevorzugt ist eine AusfĆ¼hrungsform der Dunstabzugshaube, bei welcher der Strƶmungsraum einen Abluftkanal umfasst. Der Abluftkanal kann ein Rohr oder ein Kanal sein, der senkrecht oder parallel zu dem Strƶmungskanal liegt. Im Sinne der vorliegenden Erfindung ist der Bereich der Dunstabzugshaube als Abluftkanal bezeichnet, der sich in Strƶmungsrichtung an das Filterelement anschlieƟt. GemƤƟ einer bevorzugten AusfĆ¼hrungsform ist in dem Abluftkanal das GeblƤse der Dunstabzugshaube angeordnet. Der Abluftkanal weist eine Austrittsƶffnung auf, Ć¼ber die die Abluft nach auƟen abgegeben werden kann. Insbesondere kann die Abluft in den Raum, in dem die Dunstabzugshaube betrieben wird, oder auƟerhalb des GebƤudes in dem die Dunstabzugshaube betrieben wird, abgegeben werden. Der Abluftkanal kann zumindest teilweise durch das GehƤuse der Dunstabzugshaube gebildet werden. Alternativ kann der Abluftkanal aber auch durch ein separates Bauteil, beispielsweise ein Rohr gebildet werden, der bei einer Esse beispielsweise durch einen Kamin verkleidet sein kann. Preferred is an embodiment of the extractor hood, wherein the flow space comprises an exhaust duct. The exhaust duct may be a pipe or a duct which is perpendicular or parallel to the flow duct. For the purposes of the present invention, the region of the extractor hood is referred to as an exhaust air duct, which adjoins the filter element in the flow direction. According to a preferred embodiment, the blower of the extractor hood is arranged in the exhaust duct. Of the Exhaust duct has an outlet opening through which the exhaust air can be discharged to the outside. In particular, the exhaust air in the room in which the cooker hood is operated, or outside the building in which the hood is operated, are delivered. The exhaust duct can be at least partially formed by the housing of the hood. Alternatively, however, the exhaust air duct can also be formed by a separate component, for example a pipe, which can be clad in a forge, for example, by a chimney.
GemƤƟ einer bevorzugten AusfĆ¼hrungsform ist die Luftzufuhrƶffnung ein Bypass zwischen dem Abluftkanal und dem Strƶmungskanal. According to a preferred embodiment, the air supply opening is a bypass between the exhaust air duct and the flow channel.
Im Sinne der vorliegenden Erfindung verbindet der Bypass den Abluftkanal strƶmungstechnisch mit dem Strƶmungskanal. Insbesondere kann Ć¼ber den Bypass ein Teil der Abluft aus dem Abluftkanal in den Strƶmungskanal geleitet werden. Da der Bypass die Luftzufuhrƶffnung bildet, wird die Abluft im Bereich der Umlenkstelle in den Strƶmungskanal eingebracht. Ein Vorteil der Verwendung der Abluft als Zuluft, die zur Verhinderung von Ablagerungen in den Strƶmungskanal eingebracht wird, besteht darin, dass die Strƶmung der Abluft durch das GeblƤse forciert wird und diese Strƶmung daher auf einfache Weise zur Zuleitung der Abluft in den Strƶmungskanal verwendet werden kann. Der Bypass kann durch ein separates Bauteil, beispielsweise ein Rohr realisiert werden. For the purposes of the present invention, the bypass connects the exhaust air duct fluidly with the flow channel. In particular, a part of the exhaust air from the exhaust air duct can be passed into the flow channel via the bypass. Since the bypass forms the air supply opening, the exhaust air is introduced in the region of the deflection in the flow channel. An advantage of using the exhaust air as supply air, which is introduced to prevent deposits in the flow channel, is that the flow of exhaust air is forced through the blower and this flow can therefore be used in a simple manner for supplying the exhaust air into the flow channel , The bypass can be realized by a separate component, such as a pipe.
GemƤƟ einer bevorzugten AusfĆ¼hrungsform ist der Abluftkanal oberhalb des Strƶmungskanals angeordnet und zu diesem benachbart. Besonders bevorzugt verlaufen der Strƶmungskanal und der Abluftkanal zumindest bereichsweise parallel und weisen zumindest eine Kontaktstelle auf. Bei dieser AusfĆ¼hrungsform liegt zumindest ein Teil des Strƶmungskanals in der Horizontalen und der Abluftkanal liegt an dem horizontalen Teil des Strƶmungskanals an. Der Abluftkanal verlƤuft bei dieser AusfĆ¼hrungsform daher horizontal und die Austrittsƶffnung der Dunstabzugshaube ist vorzugsweise an der Seite der Dunstabzugshaube vorgesehen. Der Vorteil dieser AusfĆ¼hrungsform besteht darin, dass hierbei auf einfache Weise ein Bypass zwischen dem Abluftkanal und dem Strƶmungskanal hergestellt werden kann. Indem die beiden KanƤle zueinander benachbart sind, ist die Entfernung, die zur Zuleitung eines Teils der Abluft zu dem Wrasen in dem Strƶmungskanal Ć¼berwunden werden muss, gering. GemƤƟ einer AusfĆ¼hrungsform der Dunstabzugshaube, sind der Abluftkanal und der Strƶmungskanal durch eine Zwischenwand voneinander getrennt. According to a preferred embodiment, the exhaust air duct is arranged above the flow channel and adjacent thereto. Particularly preferably, the flow channel and the exhaust air channel run parallel at least in some areas and have at least one contact point. In this embodiment, at least a part of the flow channel lies in the horizontal and the exhaust air duct is located on the horizontal part of the flow channel. The exhaust duct in this embodiment therefore extends horizontally and the outlet opening of the extractor hood is preferably provided on the side of the extractor hood. The advantage of this embodiment is that in this case a bypass between the exhaust air duct and the flow channel can be produced in a simple manner. By the two channels are adjacent to each other, the distance that must be overcome for the supply of a portion of the exhaust air to the vapor in the flow channel, low. According to one embodiment of the extractor hood, the exhaust duct and the flow channel are separated by an intermediate wall.
Die Zwischenwand ist ein ebenes Bauteil und stellt vorzugsweise eine Platte oder ein Blech dar. Die Zwischenwand kann gemƤƟ der vorliegenden Erfindung aus einem Blechmaterial, insbesondere aus Edelstahlblech, bestehen. Bei der AusfĆ¼hrungsform der Dunstabzugshaube, bei der der Abluftkanal und der Strƶmungskanal durch eine Zwischenwand voneinander getrennt sind, lassen sich die Vorteile der vorliegenden Erfindung besonders einfach nutzen. Der Abstand zwischen dem Abluftkanal und dem Strƶ- mungskanal ist bei dieser AusfĆ¼hrungsform lediglich durch die Zwischenwand gegeben. Die Zwischenwand trennt den Strƶmungsraum in zwei Bereiche auf, nƤmlich in den Abluftkanal und in den Strƶmungskanal. Hierbei bildet die Zwischenwand die Oberseite des Strƶmungskanals und die Unterseite des Abluftkanals. Der Abluftkanal wird bei dieser AusfĆ¼hrungsform nach oben durch die Oberseite des GehƤuses begrenzt. Die Zwischen- wand kann Teil des GehƤuses sein oder als separates Bauteil in das GehƤuse eingebracht sein. The intermediate wall is a planar component and preferably represents a plate or a sheet metal. The intermediate wall can, according to the present invention, consist of a sheet metal material, in particular of stainless steel sheet. In the embodiment of the extractor hood, in which the exhaust air duct and the flow channel are separated by an intermediate wall, the advantages of the present invention can be used particularly easily. The distance between the exhaust air duct and the flow channel is given in this embodiment only by the intermediate wall. The intermediate wall separates the flow space into two regions, namely into the exhaust air duct and into the flow duct. Here, the intermediate wall forms the top of the flow channel and the bottom of the exhaust duct. The exhaust duct is limited in this embodiment up through the top of the housing. The intermediate wall may be part of the housing or be incorporated as a separate component in the housing.
In einer bevorzugten ist die Luftzufuhrƶffnung in der Zwischenwand angeordnet. In dieser AusfĆ¼hrungsform dient die Luftzufuhrƶffnung als Bypass zwischen dem Abluftkanal und dem Strƶmungskanal. Beispielsweise ist die Luftzufuhrƶffnung als eine Aussparung in Form eines Loches oder Schlitzes in der Zwischenwand vorgesehen. Die Luftzufuhrƶffnung wird beispielsweise durch Stanzen oder Lasern in das Material der Zwischenwand eingebracht. Vorteilhaft an der Anordnung der Luftzufuhrƶffnung in der Zwischenwand ist, dass das dadurch eine definierte Verbindung zwischen dem Abluftkanal und dem Strƶmungskanal auf einfache Weise hergestellt werden kann. Beispielsweise kann die Abluft im In a preferred embodiment, the air supply opening is arranged in the intermediate wall. In this embodiment, the air supply opening serves as a bypass between the exhaust duct and the flow channel. For example, the air supply opening is provided as a recess in the form of a hole or slot in the intermediate wall. The air supply opening is introduced, for example, by punching or lasing in the material of the intermediate wall. An advantage of the arrangement of the air supply opening in the intermediate wall is that thereby a defined connection between the exhaust air duct and the flow channel can be made in a simple manner. For example, the exhaust air in
Abluftkanal vom GeblƤse in horizontaler Richtung nach auƟen abgegeben werden und die Strƶmung des Wrasen im Strƶmungskanal kann in horizontaler Richtung zum Filterele- ment geleitet werden. Der Teil der Abluft, der Ć¼ber die Luftzufuhrƶffnung in den Strƶmungskanal gelangt tritt somit vorzugsweise in vertikaler Richtung durch die Luftzufuhrƶffnung in den Strƶmungskanal ein. Weiterhin vorteilhaft ist, dass durch die Verbindung zwischen dem Abluftkanal und Strƶmungskanal mittels einer Luftzufuhrƶffnung in einer Zwischenwand ein Teil der Abluft gezielt in den Strƶmungskanal wieder eingefĆ¼hrt werden kann und somit den Wrasen beeinflussen kann. Auf Grund der Druckunterschiede zwischen Abluftkanal und Strƶmungskanal wird der Eintritt eines Teils der Abluft in den Strƶmungskanal begĆ¼nstigt. Dieser Teil der Abluft, der als Zuluft dient, erzeugt eine Strƶmung, die im Wrasen vorbeiziehendeOutgoing air duct are discharged from the fan in a horizontal direction to the outside and the flow of the vapor in the flow channel can be directed in the horizontal direction to the filter element. The part of the exhaust air which enters the flow channel via the air supply opening thus preferably enters the flow channel in the vertical direction through the air supply opening. It is also advantageous that a part of the exhaust air can be selectively reintroduced into the flow channel through the connection between the exhaust air duct and flow channel by means of an air supply opening in an intermediate wall and thus can influence the vapor. Due to the pressure differences between the exhaust air duct and the flow channel, the entry of part of the exhaust air into the flow channel is favored. This part of the exhaust air, which serves as supply air, generates a flow, which passes in the Wrasen
Partikel erfassen kann und dadurch ein Abscheiden dieser Partikel an der Zwischenwand oder dem GehƤuse verhindern kann. Zumindest wird die Abscheidung von Partikeln reduziert. Dadurch wird insgesamt das Fettlabel der Dunstabzugshaube verbessert und die Reinigungsintervalle verlƤngert. Weiterhin werden weniger Partikel im sichtbaren Bereich abgeschieden und somit die Kundenzufriedenheit erhƶht. Des Weiteren wird durch die Nutzung eines Teils der Abluft die Energieeffizienz der Dunstabzugshaube erhƶht. Can detect particles and thereby prevent deposition of these particles on the partition or the housing. At least the deposition of particles is reduced. This overall improves the fat label of the cooker hood and extends the cleaning intervals. Furthermore, fewer particles are deposited in the visible range, thus increasing customer satisfaction. Furthermore, the use of part of the exhaust air increases the energy efficiency of the extractor hood.
GemƤƟ einer AusfĆ¼hrungsform der Dunstabzugshaube, ist die Luftzufuhrƶffnung als Lufthutze ausgebildet. Als Lufthutze wird eine Luftzufuhrƶffnung bezeichnet, an deren Ein- trittsseite ein Luftleitelement angeordnet ist. Ɯber das Luftleitelement wird Luft aus einer Strƶmung entlang der Lufthutze gezielt zu der Luftzufuhrƶffnung gefĆ¼hrt. Indem die Luftzufuhrƶffnung eine Lufthutze darstellt, wird somit die Zufuhr von Luft zu dem Strƶmungskanal im Bereich der Umlenkstelle begĆ¼nstigt und somit die Anlagerung von Partikeln verringert oder ganz verhindert. According to one embodiment of the extractor hood, the air supply opening is designed as an air scoop. The air scoop is an air supply opening, at the inlet side of which an air guide element is arranged. Air from a flow along the scoop is directed to the air supply opening via the air guiding element. By the air supply opening is an air scoop, thus the supply of air to the flow channel in the region of the deflection favored and thus reduces the deposition of particles or completely prevented.
Die Lufthutze kann an einer AuƟenwand des GehƤuses vorgesehen sein und darĆ¼ber einen Teil der Umgebungsluft in den Strƶmungskanal leiten. GemƤƟ einer bevorzugten AusfĆ¼hrungsform ist die Lufthutze aber zwischen dem Abluftkanal und dem Strƶmungskanal gebildet und ist aus dem Material der Zwischenwand herausgearbeitet. Das Heraus- arbeiten der Lufthutze aus dem Material der Zwischenwand erfolgt beispielweise dadurch, dass in das Material der Zwischenwand, das in der Regel Blech darstellt, eine Ɩffnung oder ein Schlitz eingeschnitten, eingelasert oder gestanzt wird und anschlieƟend das Material in dem Bereich der Ɩffnung oder des Schlitzes nach oben gebogen wird. Da der Abluftkanal vorzugsweise oberhalb des Strƶmungskanals und insbesondere oberhalb der Zwischenwand liegt, ragt das nach oben gebogene Material in den Abluftkanal. Die nach oben gebogenen Bereiche des bearbeiteten Materials der Zwischenwand bilden dabei VorsprĆ¼nge aus, die eine laschenartige Form besitzen kƶnnen. Die Lasche ist dabei so ausgerichtet, dass diese entgegen der Strƶmungsrichtung der Abluft in dem Abluftkanal gerichtet ist und somit ein Teil der Abluft von der Lufthutze erfasst und in die Luftzufuhrƶffnung geleitet wird. The air scoop may be provided on an outer wall of the housing and may pass a portion of the ambient air into the flow channel. According to a preferred embodiment, the air scoop is formed between the exhaust air duct and the flow channel and is machined out of the material of the intermediate wall. The working out of the scoop from the material of the intermediate wall takes place, for example, that in the material of the intermediate wall, which is usually sheet, an opening or a slot is cut, lasered or stamped and then the material in the region of the opening or of the slot is bent upwards. Since the exhaust air duct is preferably above the flow channel and in particular above the intermediate wall, the upwardly bent material protrudes into the exhaust air duct. The upwardly bent portions of the machined material of the intermediate wall form protrusions, which may have a tab-like shape. The tab is aligned so that it against the flow direction of the exhaust air in the exhaust duct is directed and thus a part of the exhaust air is detected by the scoop and directed into the air supply opening.
Vorteilhaft an dieser AusfĆ¼hrungsform ist, dass die Lufthutze auf einfache Weise hergestellt werden kann und eine zuverlƤssige Zufuhr von Abluft in den Strƶmungskanal ermƶg- licht. An advantage of this embodiment is that the air scoop can be made in a simple manner and a reliable supply of exhaust air in the flow channel allows light.
GemƤƟ einer weiteren AusfĆ¼hrungsform der Dunstabzugshaube ist in der Zwischenwand zwischen Abluftkanal und Strƶmungskanal zumindest eines der Filterelemente aufgenommen. According to a further embodiment of the extractor hood, at least one of the filter elements is accommodated in the intermediate wall between the exhaust air duct and the flow duct.
Als aufgenommen im Sinne der vorliegenden Erfindung wird ein Filterelement bezeichnet, das von der Zwischenwand umgeben ist. Als Umgeben wird in diesem Zusammenhang verstanden, dass der ƤuƟere Rand der Zwischenwand in senkrechter Projektion auf das Filterelement auƟerhalb des Randes des flƤchigen Filterelementes liegt, das heiƟt, die FlƤche des Filterelementes ist von dem inneren Rand der Zwischenwand in senkrechter Projektion umgeben. Vorzugsweise erstreckt sich die Zwischenwand Ć¼ber die RƤnder des Filterelementes seitlich, nach vorne und hinten hinaus. Die Zwischenwand bildet somit einen flƤchigen Rahmen um das flƤchige Filterelement. Vorteilhaft an dieser AusfĆ¼hrungsform ist, dass eine separate Filterhalterung entbehrlich ist. As taken in the context of the present invention, a filter element is referred to, which is surrounded by the intermediate wall. Surrounding is understood in this context that the outer edge of the intermediate wall is in a perpendicular projection on the filter element outside the edge of the flat filter element, that is, the surface of the filter element is surrounded by the inner edge of the intermediate wall in a vertical projection. Preferably, the intermediate wall extends laterally beyond the edges of the filter element, forwards and backwards. The intermediate wall thus forms a flat frame around the flat filter element. An advantage of this embodiment is that a separate filter holder is unnecessary.
Es liegt aber auch im Rahmen der Erfindung das Filterelement unterhalb der Zwischenwand oder auf der Zwischenwand vorzusehen. In diesem Fall weist die Zwischenwand eine Durchlassƶffnung auf, die von dem Filterelement abgedeckt wird. However, it is also within the scope of the invention to provide the filter element below the intermediate wall or on the intermediate wall. In this case, the intermediate wall has a passage opening, which is covered by the filter element.
In einer AusfĆ¼hrungsform der Dunstabzugshaube ist die Luftzufuhrƶffnung beabstandet zu dem zumindest einen Filterelement angeordnet. Vorteilhaft an dieser AusfĆ¼hrungsform ist, dass die Strƶmung, welche durch den Eintritt der Luft, durch die Luftzufuhrƶffnung in den Strƶmungskanal, erzeugt wird, den Wrasen beeinflussen kann, bevor dieser durch eines der Filterelemente durchtritt und gereinigt wird. Dadurch kann gewƤhrleistet werden, dass bei der Umlenkung der Wrasenstrƶmung im Strƶmungskanal ein Abscheiden von Partikeln an der Zwischenwand oder dem GehƤuse reduziert oder vermieden werden kann. In einer AusfĆ¼hrungsform der Dunstabzugshaube, ist die Luftzufuhrƶffnung in einer AuƟenwand des GehƤuses angeordnet. Vorteilhaft an dieser AusfĆ¼hrungsform ist, dass die Luftzufuhrƶffnung eine Verbindung zwischen der Umgebung der Dunstabzugshaube, das heiƟt dem Raum, in dem die Dunstabzugshaube betrieben wird, und dem Strƶmungska- nal herstellt. Dadurch kann Umgebungsluft angesaugt werden und durch die Luftzufuhrƶffnung in den Strƶmungskanal eintreten. Ein Vorteil dieser AusfĆ¼hrungsform besteht darin, dass die FĆ¼hrung des Abluftkanals frei gewƤhlt werden kann, da dieser nicht an dem Strƶmungskanal anliegen muss. Beispielsweise kann der Abluftkanal sich vertikal nach oben erstrecken und beispielsweise durch einen Kamin verblendet sein. Die AuƟenwand, in der die mindestens eine Luftzufuhrƶffnung eingebracht ist, kann eine oder mehrere der SeitenwƤnde des GehƤuses und/oder die Oberseite des GehƤuses sein. In jedem Fall wird die Luftzufuhrƶffnung so angeordnet, dass diese sich durch die AuƟenwand hindurch erstreckt und im Inneren des GehƤuses in dem Strƶmungskanal endet. Die Luftzufuhrƶffnung kann horizontal, vertikal oder geneigt ausgerichtet sein. In one embodiment of the extractor hood, the air supply opening is arranged at a distance from the at least one filter element. An advantage of this embodiment is that the flow, which is generated by the entry of air through the air supply opening in the flow channel, can influence the vapor before it passes through one of the filter elements and is cleaned. As a result, it can be ensured that during the deflection of the vapor flow in the flow channel, a separation of particles from the intermediate wall or the housing can be reduced or avoided. In an embodiment of the extractor hood, the air supply opening is arranged in an outer wall of the housing. An advantage of this embodiment is that the air supply opening establishes a connection between the environment of the extractor hood, that is the space in which the extractor hood is operated, and the flow channel. As a result, ambient air can be sucked in and enter through the air supply opening in the flow channel. An advantage of this embodiment is that the leadership of the exhaust duct can be chosen freely, as this does not have to be applied to the flow channel. For example, the exhaust duct may extend vertically upwards and be blinded for example by a chimney. The outer wall, in which the at least one air supply opening is introduced, may be one or more of the side walls of the housing and / or the top of the housing. In any case, the air supply opening is arranged so that it extends through the outer wall and ends in the interior of the housing in the flow channel. The air supply opening may be oriented horizontally, vertically or inclined.
In einer weiteren AusfĆ¼hrungsform der Dunstabzugshaube, ist der Strƶmungskanal an der Stelle der Luftzufuhrƶffnung verengt. Vorteilhaft an dieser AusfĆ¼hrungsform ist, dass durch die Verengung des Strƶmungskanals an der Stelle der Luftzufuhrƶffnung ein Unterdruck eingestellt wird. Durch diesen Unterdruck wird Umgebungsluft oder Abluft ange- saugt und tritt in den Strƶmungskanal ein. Besonders vorteilhaft wird diese Ausgestaltung des Strƶmungskanals bei einer Dunstabzugshaube verwendet, bei der die Luftzufuhrƶffnung in einer AuƟenwand des GehƤuses eingebracht ist. Da die Umgebungsluft keine definierte Strƶmungsrichtung besitzt, kann durch den durch die Verengung beziehungsweise VerjĆ¼ngung erzeugten Unterdruck, ein Ansaugstrom aus der Umgebung erzeugt werden und somit die zuverlƤssige Zufuhr von Luft an der Umlenkstelle in dem Strƶmungskanal gewƤhrleistet werden. In a further embodiment of the extractor hood, the flow channel is narrowed at the location of the air supply opening. An advantage of this embodiment is that a negative pressure is set by the narrowing of the flow channel at the location of the air supply opening. This negative pressure draws in ambient air or exhaust air and enters the flow channel. This embodiment of the flow channel is particularly advantageously used in an extractor hood, in which the air supply opening is introduced in an outer wall of the housing. Since the ambient air has no defined flow direction, an intake flow from the environment can be generated by the negative pressure generated by the constriction or taper and thus the reliable supply of air at the deflection point in the flow channel can be ensured.
Die Erfindung wird im Folgenden erneut unter Bezugnahme auf die beiliegenden Figuren genauer beschrieben. Es zeigen: The invention will be further described below with reference to the accompanying figures. Show it:
Fig. 1 : eine schematische Perspektivansicht eines Bereiches einer erfindungsgemƤƟen Dunstabzugshaube mit einem Strƶmungskanal und einer Luftzufuhrƶffnung gemƤƟ einer ersten AusfĆ¼hrungsform; Fig. 2: eine schematische Detailansicht eines Bereiches einer erfindungsgemƤƟen1 shows a schematic perspective view of a region of an extractor hood according to the invention with a flow channel and an air supply opening according to a first embodiment; 2 shows a schematic detail view of a region of an inventive
Dunstabzugshaube mit einem Strƶmungskanal und einer Luftzufuhrƶffnung gemƤƟ einer zweiten AusfĆ¼hrungsform; Fig. 3: eine schematische Perspektivansicht eines Bereiches einer erfindungsgemƤƟen Dunstabzugshaube mit einem Strƶmungskanal und einer Luftzufuhrƶffnung gemƤƟ einer dritten AusfĆ¼hrungsform; Extractor hood with a flow channel and an air supply opening according to a second embodiment; 3 shows a schematic perspective view of a region of an extractor hood according to the invention with a flow channel and an air supply opening according to a third embodiment;
Fig. 4: eine schematische Perspektivansicht eines Bereiches einer Dunstabzugshaube mit einem Strƶmungskanal gemƤƟ dem Stand der Technik. 4 shows a schematic perspective view of a region of an extractor hood with a flow channel according to the prior art.
In der Figur 1 ist ein Bereich einer erfindungsgemƤƟen Dunstabzugshaube mit einer ersten AusfĆ¼hrungsform einer Luftzufuhrƶffnung 16 in einem Strƶmungskanal 12 gezeigt. In der gezeigten Ansicht ist lediglich die linke HƤlfte des GehƤuses 1 der Dunstabzugshaube dargestellt. FIG. 1 shows a region of an extractor hood according to the invention with a first embodiment of an air supply opening 16 in a flow channel 12. In the view shown only the left half of the housing 1 of the hood is shown.
Die Dunstabzugshaube umfasst ein GeblƤse 13, das im Inneren des GehƤuses 1 angeordnet ist. In der Unterseite des GehƤuses 1 ist eine Ansaugƶffnung vorgesehen. Diese Ansaugƶffnung wird im mittleren Bereich durch eine Prallplatte 15 abgedeckt. Zwischen der Prallplatte 15 und der Seitenwand des GehƤuses 1 wird dadurch ein Randabsaugbereich gebildet, der eine Eintrittsƶffnung 121 aufweist, die sich vorzugsweise Ć¼ber den gesamten Randabsaugbereich erstreckt. Im Inneren des GehƤuses 1 und oberhalb der Prallplatte 15 ist in der gezeigten AusfĆ¼hrungsform eine Zwischenwand 14 in dem GehƤuse 1 vorgesehen. Die Zwischenwand 14 kann als Teil des GehƤuses 1 ausgebildet sein, das heiƟt mit dem GehƤuse 1 einteilig ausgestaltet sein. Es liegt aber auch im Rahmen der Erfindung, dass die Zwischenwand 14 ein separates Bauteil darstellt, das in dem GehƤuse 1 befestigt wird. Die Zwischenwand 14 liegt parallel zu der Prallplatte 15. Im mittleren Bereich der Zwischenwand 14 ist in der dargestellten AusfĆ¼hrungsform unterhalb des GeblƤses 13 ein Filterelement 140 aufgenommen. Im ƤuƟeren Bereich der Zwischenwand 14 ist eine Luftzufuhrƶffnung 16 eingebracht. Im oberen Bereich der Seitenwand des GehƤuses 1 ist eine Austrittsƶffnung 17 eingebracht. In der Dunstabzugshaube und in der dargestellten AusfĆ¼hrungsform ist in dem GehƤuse 1 ein Strƶmungsraum 10 gebildet. Der Strƶmungsraum 10 umfasst einen Abluftkanal 1 1 und einen Strƶmungskanal 12. Der Abluftkanal 1 1 wird nach unten durch die Zwischenwand 14 und nach oben durch die Oberseite des GehƤuses 1 begrenzt. Der Strƶmungskanal 12 ist nach oben durch die Zwischenwand 14 und nach unten durch die Prallplatte 15 be- grenzt. Zu den Seiten ist der Strƶmungskanal durch die Seitenwand des GehƤuses 1 begrenzt. Die Zwischenwand 14 trennt in der dargestellten AusfĆ¼hrungsform den Abluftkanal 1 1 von dem Strƶmungskanal 12. Der Abluftkanal 1 1 erstreckt sich von dem Filterelement 140 zu der Austrittsƶffnung 17 und der Strƶmungskanal von der Eintrittsƶffnung 121 des Randabsaugbereiches zu dem Filterelement 140. The extractor hood comprises a fan 13, which is arranged in the interior of the housing 1. In the bottom of the housing 1, a suction opening is provided. This intake opening is covered in the central region by a baffle plate 15. Between the baffle plate 15 and the side wall of the housing 1, a Randabsaugbereich is formed by having an inlet opening 121, which preferably extends over the entire Randabsaugbereich. In the interior of the housing 1 and above the baffle plate 15, an intermediate wall 14 is provided in the housing 1 in the embodiment shown. The intermediate wall 14 may be formed as part of the housing 1, that is to be configured integrally with the housing 1. However, it is also within the scope of the invention that the intermediate wall 14 is a separate component which is fastened in the housing 1. The intermediate wall 14 is parallel to the baffle plate 15. In the illustrated embodiment, a filter element 140 is received in the middle region of the intermediate wall 14 below the blower 13. In the outer region of the intermediate wall 14, an air supply opening 16 is introduced. In the upper region of the side wall of the housing 1, an outlet opening 17 is introduced. In the extractor hood and in the illustrated embodiment, a flow space 10 is formed in the housing 1. The flow space 10 includes an exhaust duct 1 1 and a flow channel 12. The exhaust duct 1 1 is bounded below by the intermediate wall 14 and up through the top of the housing 1. The flow channel 12 is bounded above by the intermediate wall 14 and down through the baffle plate 15. To the sides of the flow channel is bounded by the side wall of the housing 1. The intermediate wall 14 separates in the illustrated embodiment, the exhaust duct 1 1 of the flow channel 12. The exhaust duct 1 1 extends from the filter element 140 to the outlet opening 17 and the flow channel from the inlet opening 121 of the Randabsaugbereiches to the filter element 140th
In der dargestellten AusfĆ¼hrungsform ist das GeblƤse 13 im Abluftkanal 1 1 angeordnet. Ɯber das GeblƤse 13 wird in dem Strƶmungskanal 12 ein Unterdruck erzeugt, der zum Ansaugen verunreinigter Luft, die auch als Wrasen W bezeichnet wird, von um und insbesondere von unterhalb der Dunstabzugshaube dient. Durch die Prallplatte 15 wird ein di- rektes Anstrƶmen des Filterelementes 140 in der Dunstabzugshaube durch Wrasen vermieden. Der Wrasen W wird vielmehr entlang der Unterseite der Prallplatte 15 zu der Eintrittsƶffnung 121 des Randabsaugungsbereichs des Strƶmungskanals 12 geleitet. Der eingetretene Wrasen W wird durch den Strƶmungskanal 12 bis zu einem Filterelement 140 geleitet, durch das er hindurch tritt und gereinigt wird. In der dargestellten AusfĆ¼h- rungsform wird nach Durchtritt und Reinigung an dem zumindest einen Filterelement 140 die Abluft A, aufgrund der durch das GeblƤses 13 eingestellten Strƶmung in horizontaler Richtung, durch die Austrittsƶffnung 17 nach auƟen abgegeben. In the illustrated embodiment, the blower 13 is disposed in the exhaust duct 1 1. Via the fan 13, a negative pressure is generated in the flow channel 12, which is used for sucking contaminated air, which is also referred to as vapor W, from around and in particular from below the extractor hood. The baffle plate 15 prevents direct inflow of the filter element 140 in the extractor hood by vapors. The vapor W is instead conducted along the underside of the baffle plate 15 to the inlet opening 121 of the Randabsaugungsbereichs the flow channel 12. The entered vapor W is passed through the flow channel 12 to a filter element 140 through which it passes and is cleaned. In the illustrated embodiment, after passing through and cleaning the at least one filter element 140, the exhaust air A, due to the flow set by the blower 13 in the horizontal direction, is discharged through the outlet opening 17 to the outside.
Der Strƶmungskanal 12 weist eine Umlenkstelle 120 auf, an der die Strƶmungsrichtung des Wrasen W geƤndert wird. Die Umlenkstelle 120 ist ein Bereich des Strƶmungskanals 12, an dem aufgrund der Geometrie des Strƶmungskanals 12 eine RichtungsƤnderung der in dem Strƶmungskanal 12 strƶmenden Wrasens W erfolgt. Die Geometrie des Strƶmungskanals 12 wird durch das Zusammenspiel des GehƤuses 1 und in der dargestellten AusfĆ¼hrungsform der Zwischenwand 14 mit der Prallplatte 15 definiert. The flow channel 12 has a deflection point 120 at which the flow direction of the vapor W is changed. The deflection point 120 is a region of the flow channel 12, on the basis of the geometry of the flow channel 12, a change in direction of the flowing in the flow channel 12 Wrasens W takes place. The geometry of the flow channel 12 is defined by the interaction of the housing 1 and in the illustrated embodiment of the intermediate wall 14 with the baffle plate 15.
In der dargestellten AusfĆ¼hrungsform ist gezeigt, dass an der Umlenkstelle 120 des Strƶmungskanals 12 eine Luftzufuhrƶffnung 16 in Form eines Bypasses 160 angeordnet ist. In dieser AusfĆ¼hrungsform ist der Bypass 160 als eine Auspaarung in der Zwischenwand 14 ausgestaltet. Der Bypass 160 stellt somit eine Verbindung zwischen dem Abluftkanal 1 1 und dem Strƶmungskanal 12 her. Durch diesen Bypass 16 kann gezielt ein Teil der Abluft A in den Strƶmungskanal 12 eintreten. Durch die Strƶmung, die durch den Teil der Abluft A in dem Strƶmungskanal 12 erzeugt wird, kƶnnen vorbeiziehende Partikel im Wrasen W erfasst werden und somit verhindert oder zumindest reduziert werden, dass Partikel an der Zwischenwand 14 abgeschieden werden. In the illustrated embodiment, it is shown that at the deflection point 120 of the flow channel 12, an air supply opening 16 is arranged in the form of a bypass 160. In this embodiment, the bypass 160 is a mismatch in the intermediate wall 14 designed. The bypass 160 thus establishes a connection between the exhaust air duct 1 1 and the flow channel 12. By means of this bypass 16, a part of the exhaust air A can enter the flow channel 12 in a targeted manner. Due to the flow generated by the part of the exhaust air A in the flow channel 12, passing particles in the vapor W can be detected and thus prevented or at least reduced, that particles are deposited on the intermediate wall 14.
Figur 2 zeigt einen Bereich einer erfindungsgemƤƟen Dunstabzugshaube mit einer zweiten AusfĆ¼hrungsform einer Luftzufuhrƶffnung. In der dargestellten Ansicht sind einige Komponenten der erfindungsgemƤƟen Dunstabzugshaube nur teilweise dargestellt beziehungsweise angedeutet. Der Aufbau der Dunstabzugshaube nach Figur 2 entspricht dem der AusfĆ¼hrungsform nach Figur 1 und wird daher nicht erneut erlƤutert. Der einzige Unterschied zwischen den AusfĆ¼hrungsformen der Figur 1 und der Figur 2 besteht in der Ausgestaltung der Luftzufuhrƶffnung 16. Im Un- terschied zur Figur 1 , ist in der AusfĆ¼hrungsform der Figur 2 der Bypass als LufthutzeFIG. 2 shows a region of an extractor hood according to the invention with a second embodiment of an air supply opening. In the illustrated view, some components of the extractor hood according to the invention are only partially shown or indicated. The construction of the extractor hood according to Figure 2 corresponds to that of the embodiment of Figure 1 and is therefore not explained again. The only difference between the embodiments of FIG. 1 and FIG. 2 is the design of the air supply opening 16. In contrast to FIG. 1, in the embodiment of FIG. 2 the bypass is used as an air scoop
1600 ausgebildet. Die Lufthutze 1600 ist aus dem Material der Zwischenwand 14 herausgearbeitet. Wie in Figur 2 dargestellt, wird in die Zwischenwand 14 eine Ɩffnung derart eingeschnitten, dass ein Teil des Materials in der Ɩffnung nach oben gebogen werden kann. Der nach oben gebogene Teil des Materials der Zwischenwand 14 ragt in den Abluftkanal 1 1 hinein. 1600 trained. The air scoop 1600 is machined out of the material of the intermediate wall 14. As shown in Figure 2, an opening is cut in the intermediate wall 14 such that a portion of the material in the opening can be bent upwardly. The upwardly bent part of the material of the intermediate wall 14 protrudes into the exhaust duct 1 1.
Wie in Figur 2 dargestellt, definiert das nach oben gebogene Material der Zwischenwand 14 eine Art Umlenkelement im Abluftkanal 1 1. Somit wird durch die Lufthutze 1600 teilweise die Abluft A gezielt in den Strƶmungskanal 12 geleitet. Des Weiteren wird durch den Druckunterschied eine Strƶmung der Abluft A, die in den Strƶmungskanal 12 eintritt, begĆ¼nstigt. As shown in Figure 2, the upwardly curved material of the intermediate wall 14 defines a kind of deflection in the exhaust duct 1 1. Thus, the exhaust air A is directed through the air scoop 1600 partially into the flow channel 12. Furthermore, by the pressure difference, a flow of the exhaust air A, which enters the flow channel 12, favors.
In der Figur 3 wird ein Bereich einer erfindungsgemƤƟen Dunstabzugshaube mit einer dritten AusfĆ¼hrungsform einer Luftzufuhrƶffnung dargestellt. FIG. 3 shows a region of an extractor hood according to the invention with a third embodiment of an air supply opening.
Figur 3 zeigt im allgemeinen Aufbau dieselben Komponenten wie Figur 1 und diese werden daher nicht erneut erlƤutert. Im Unterschied zur AusfĆ¼hrungsform der Figur 1 , ist in der AusfĆ¼hrungsform nach Figur 3 die Luftzufuhrƶffnung 16 nicht in der Zwischenwand 14 sondern in einer AuƟenwand des GehƤuses 1 der Dunstabzugshaube angeordnet. Dadurch kann Umgebungsluft U in den Strƶmungskanal 12 eintreten. Des Weiteren ist der Strƶmungskanal 12 in der dargestellten Ansicht an der Stelle der Luftzufuhrƶffnung 16 verengt. FIG. 3 generally shows the same components as FIG. 1 and these are therefore not explained again. In contrast to the embodiment of Figure 1, in the embodiment of Figure 3, the air supply opening 16 is not arranged in the intermediate wall 14 but in an outer wall of the housing 1 of the hood. As a result, ambient air U can enter the flow channel 12. Furthermore, the flow channel 12 is narrowed in the illustrated view at the location of the air supply opening 16.
Im Unterschied zu den AusfĆ¼hrungsformen nach Figur 1 und Figur 2, stellt diese AusfĆ¼hrungsform eine passive Variante dar. Durch die Verengung des Strƶmungskanals 12 in der dargestellten AusfĆ¼hrungsform stellt sich ein Unterdruck ein, der die Umgebungsluft U anzieht. Dadurch tritt die Umgebungsluft U in den Strƶmungskanal 12 ein und kann Parti- kel im Wrasen W erfassen, wodurch diese nicht oder vermindert an der Zwischenwand 14 oder dem GehƤuse 1 abgeschieden werden. In contrast to the embodiments according to Figure 1 and Figure 2, this embodiment represents a passive variant. Due to the narrowing of the flow channel 12 in the illustrated embodiment, a negative pressure is established, which attracts the ambient air U. As a result, the ambient air U enters the flow channel 12 and can detect particles in the vapor W, as a result of which they are not deposited or are deposited on the intermediate wall 14 or the housing 1 in a reduced manner.
Figur 4 zeigt einen Strƶmungskanal 12 einer Dunstabzugshaube gemƤƟ dem Stand der Technik. FIG. 4 shows a flow channel 12 of a vapor extraction hood according to the prior art.
Diese Darstellung zeigt, dass der Strƶmungskanal 12 bei Dunstabzugshauben im Stand der Technik durch ein GehƤuse 1 und eine Prallplatte 15 begrenzt wird. Des Weiteren zeigt die Figur 4, dass der Wrasen W durch die Eintrittsƶffnung 121 des Randabsau- gungsbereichs des Strƶmungskanals 12 eintritt. Der Wrasen W wird im Strƶmungskanal 12 umgelenkt, wodurch die Strƶmungsrichtung des Wrasen W geƤndert wird. This illustration shows that the flow channel 12 in the extractor hoods in the prior art by a housing 1 and a baffle plate 15 is limited. Furthermore, FIG. 4 shows that the vapor W enters through the inlet opening 121 of the edge suction region of the flow channel 12. The vapor W is deflected in the flow channel 12, whereby the flow direction of the vapor W is changed.
Wie in der Figur 4 gezeigt, wird in den Ansaugspaltkonstruktionen gemƤƟ dem Stand der Technik eine Umlenkung des Wrasen W um 90Ā° umgesetzt. Durch die hohe Geschwindigkeit und die Umlenkung des Wrasen kommt es zur Partikelabscheidung P an der Dunstabzugshaube selbst, beispielsweise am GehƤuse 1 . Nachteilig ist, dass dadurch zum einen der Fettlabel der Dunstabzugshaube verstƤrkt wird und die Reinigungsintervalle verkĆ¼rzt werden und zum anderen, dass die Abscheidungen oft fĆ¼r den Kunden sichtbar sind und daher die Dunstabzugshauben auch an Ƥsthetischer Wirkung verlieren. Bezugszeichen As shown in FIG. 4, in the prior art suction gap constructions, a deflection of the vapor W is converted by 90 Ā°. Due to the high speed and the deflection of the vapor, particle separation P occurs on the extractor hood itself, for example on the housing 1. The disadvantage is that on the one hand the fat label of the hood is reinforced and the cleaning intervals are shortened and on the other hand, that the deposits are often visible to the customer and therefore lose the cooker hoods also to aesthetic effect. reference numeral
I GehƤuse I housing
10 StrƶmungsraumĀ 10 flow space
I I AbluftkanalI I exhaust duct
12 Strƶmungskanal12 flow channel
120 Umlenkstelle120 deflection point
121 Eintrittsƶffnung121 entrance opening
13 GeblƤse 13 blowers
14 Zwischenwand 140 FilterelementĀ 14 intermediate wall 140 filter element
15 Prallplatte 15 baffle plate
16 Luftzufuhrƶffnung 160 Bypass Ā 16 Air supply opening 160 Bypass
1600 Lufthutze Ā 1600 scoop
17 Austrittsƶffnung Ā 17 outlet opening
A Abluft A exhaust air
P PartikelabscheidungĀ P particle separation
U UmgebungsluftU ambient air
W Wrasen Wras

Claims

PATENTANSPRƜCHE
Dunstabzugshaube umfassend ein GeblƤse (13), zumindest ein Filterelement (140), eine Prallplatte (15) und ein GehƤuse (1 ), welches zumindest einen Teil eines Strƶmungsraum (10) bildet, der einen Strƶmungskanal (12) mit einem Randabsau- gungsbereich, der mindestens eine Eintrittsƶffnung (150) aufweist, umfasst, dadurch gekennzeichnet, dass im Bereich mindestens einer Umlenkstelle (120) des Strƶmungskanals (12) mindestens eine Luftzufuhrƶffnung (16) angeordnet ist. An extractor hood comprising a fan (13), at least one filter element (140), a baffle plate (15) and a housing (1), which forms at least part of a flow space (10) having a flow channel (12) with a Randabsau- area, the at least one inlet opening (150) comprises, characterized in that in the region of at least one deflection point (120) of the flow channel (12) at least one air supply opening (16) is arranged.
Dunstabzugshaube gemƤƟ Anspruch 1 , dadurch gekennzeichnet, dass die Luftzufuhrƶffnung (16) beabstandet zu der Eintrittsƶffnung (121 ) des Randabsaugungsbe- reichs angeordnet ist. Extractor hood according to claim 1, characterized in that the air supply opening (16) spaced from the inlet opening (121) of the Randabsaugungsbe- is arranged.
Dunstabzugshaube gemƤƟ Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Strƶmungsraum (10) einen Abluftkanal (1 1 ) umfasst, in dem vorzugsweise das GeblƤse (13) angeordnet ist. Extractor hood according to claim 1 or 2, characterized in that the flow space (10) comprises an exhaust duct (1 1), in which preferably the blower (13) is arranged.
Dunstabzugshaube gemƤƟ Anspruch 3, dadurch gekennzeichnet, dass der Extractor hood according to claim 3, characterized in that the
Abluftkanal (1 1 ) oberhalb des Strƶmungskanals (12) zu diesem benachbart angeordnet ist. Exhaust duct (1 1) above the flow channel (12) adjacent thereto is arranged.
Dunstabzugshaube gemƤƟ Anspruch 3 oder 4, dadurch gekennzeichnet, dass der Abluftkanal (1 1 ) und der Strƶmungskanal (12) durch eine Zwischenwand (14) voneinander getrennt sind. Extractor hood according to claim 3 or 4, characterized in that the exhaust air duct (1 1) and the flow channel (12) by an intermediate wall (14) are separated from each other.
Dunstabzugshaube gemƤƟ Anspruch 5, dadurch gekennzeichnet, dass in der Zwischenwand (14) zumindest eines der Filterelemente (140) aufgenommen ist. Extractor hood according to claim 5, characterized in that in the intermediate wall (14) at least one of the filter elements (140) is accommodated.
Dunstabzugshaube gemƤƟ einem der AnsprĆ¼che 1 bis 6, dadurch gekennzeichnet, dass die Luftzufuhrƶffnung (16) beabstandet zu dem zumindest einen Filterelement (140) angeordnet ist. Extractor hood according to one of claims 1 to 6, characterized in that the air supply opening (16) spaced from the at least one filter element (140) is arranged.
8. Dunstabzugshaube gemƤƟ einem der AnsprĆ¼che 1 bis 7, dadurch gekennzeichnet, dass die Luftzufuhrƶffnung (16) ein Bypass (160) zwischen dem Abluftkanal (1 1 ) und dem Strƶmungskanal (12) ist. 8. Extractor hood according to one of claims 1 to 7, characterized in that the air supply opening (16) is a bypass (160) between the exhaust air duct (1 1) and the flow channel (12).
9. Dunstabzugshaube gemƤƟ einem der AnsprĆ¼che 3 bis 8, dadurch gekennzeichnet, dass die Luftzufuhrƶffnung (16) in der Zwischenwand (14) angeordnet ist. 9. Extractor hood according to one of claims 3 to 8, characterized in that the air supply opening (16) in the intermediate wall (14) is arranged.
10. Dunstabzugshaube gemƤƟ einem der AnsprĆ¼che 1 bis 9, dadurch gekennzeichnet, dass die Luftzufuhrƶffnung (16) als Lufthutze (1600) ausgebildet ist. 1 1 . Dunstabzugshaube gemƤƟ Anspruch 10, dadurch gekennzeichnet, dass die Lufthutze (1600) zwischen Abluftkanal (1 1 ) und Strƶmungskanal (12) gebildet ist und aus dem Material der Zwischenwand (14) herausgearbeitet ist. 10. Extractor hood according to one of claims 1 to 9, characterized in that the air supply opening (16) is designed as a scoop (1600). 1 1. Extractor hood according to claim 10, characterized in that the air scoop (1600) between the exhaust duct (1 1) and the flow channel (12) is formed and worked out of the material of the intermediate wall (14).
12. Dunstabzugshaube gemƤƟ einem der AnsprĆ¼che 1 bis 1 1 , dadurch gekennzeichnet, dass die Luftzufuhrƶffnung (16) in einer AuƟenwand des GehƤuses (1 ) liegt. 12. Extractor hood according to one of claims 1 to 1 1, characterized in that the air supply opening (16) in an outer wall of the housing (1).
13. Dunstabzugshaube gemƤƟ einem der AnsprĆ¼che 1 bis 12, dadurch gekennzeichnet, dass der Strƶmungskanal (12) an der Stelle der Luftzufuhrƶffnung (16) verengt ist. 13. Extractor hood according to one of claims 1 to 12, characterized in that the flow channel (12) at the location of the air supply opening (16) is narrowed.
EP18700571.5A 2017-01-26 2018-01-15 Extractor hood Active EP3574265B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18700571T PL3574265T3 (en) 2017-01-26 2018-01-15 Extractor hood

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017201256.0A DE102017201256A1 (en) 2017-01-26 2017-01-26 Hood
PCT/EP2018/050855 WO2018137956A1 (en) 2017-01-26 2018-01-15 Extractor hood

Publications (2)

Publication Number Publication Date
EP3574265A1 true EP3574265A1 (en) 2019-12-04
EP3574265B1 EP3574265B1 (en) 2022-03-23

Family

ID=60997487

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EP (1) EP3574265B1 (en)
CN (1) CN110199157A (en)
DE (1) DE102017201256A1 (en)
PL (1) PL3574265T3 (en)
WO (1) WO2018137956A1 (en)

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CN113739233B (en) * 2021-09-13 2023-07-14 ęµ™ę±Ÿę„ē±³ē‰¹ē”µå™Øęœ‰é™å…¬åø Fume purifying integrated machine

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JP4541672B2 (en) * 2003-09-25 2010-09-08 åÆŒå£«å·„ę„­ę Ŗ式会ē¤¾ Range hood for IH cooking heater
JP4495475B2 (en) 2004-02-02 2010-07-07 åÆŒå£«å·„ę„­ę Ŗ式会ē¤¾ Range hood for IH cooking heater
KR100677288B1 (en) 2005-08-22 2007-02-02 ģ—˜ģ§€ģ „ģž ģ£¼ģ‹ķšŒģ‚¬ Exhaust hood
JP2015210066A (en) * 2014-04-30 2015-11-24 ę Ŗ式会ē¤¾ļ¼¬ļ½‰ļ½˜ļ½‰ļ½Œ Exhaust system
EP2772695B1 (en) 2014-06-27 2021-04-21 V-Zug AG Extractor hood

Also Published As

Publication number Publication date
DE102017201256A1 (en) 2018-07-26
PL3574265T3 (en) 2022-07-11
EP3574265B1 (en) 2022-03-23
WO2018137956A1 (en) 2018-08-02
CN110199157A (en) 2019-09-03

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