EP4078037A1 - Production d'un rideau d'air pour améliorer l'aspiration des vapeurs dans des hottes d'aspiration - Google Patents

Production d'un rideau d'air pour améliorer l'aspiration des vapeurs dans des hottes d'aspiration

Info

Publication number
EP4078037A1
EP4078037A1 EP20819714.5A EP20819714A EP4078037A1 EP 4078037 A1 EP4078037 A1 EP 4078037A1 EP 20819714 A EP20819714 A EP 20819714A EP 4078037 A1 EP4078037 A1 EP 4078037A1
Authority
EP
European Patent Office
Prior art keywords
housing
air
air outlet
extractor
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.)
Pending
Application number
EP20819714.5A
Other languages
German (de)
English (en)
Inventor
Iva KOLUNDZIJA
Patrick Treder
Ulrich Goss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP4078037A1 publication Critical patent/EP4078037A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2028—Removing cooking fumes using an air curtain

Definitions

  • the invention relates to the production of an air curtain to improve the extraction of fumes in extractor hoods.
  • hoods In the case of extractor devices for use in the kitchen, in particular extractor hoods, large hoods are generally used that are fitted over the entire hob in order to suck in the vapors and fumes generated in the cookware with a fan and thus filter the polluted air.
  • the object of the present invention is therefore to improve the vapor intake so that the disadvantages of the prior art can at least be reduced.
  • the invention relates to an extractor hood, comprising an extractor housing with at least one suction opening and a suction fan which is provided for sucking air into the suction opening and is arranged in the extractor housing.
  • the extractor hood is characterized in that the extractor hood has an air outlet housing with at least one air outlet opening for blowing air out of the air outlet housing and the at least one air outlet opening is directed towards the suction opening.
  • the extractor hood can be provided with the extractor housing, for example, for wall mounting.
  • the extractor housing can be attached to the wall of the room.
  • a housing in which at least one suction fan is arranged is referred to as an extractor housing.
  • the suction fan can be a radial fan, which can have a fan housing, for example a spiral housing or worm housing. If a fan housing is provided, this is accommodated in the extractor housing.
  • the extractor housing has at least one suction opening through which air can be sucked into the suction opening and thus into the extractor housing.
  • a filter element can be provided in or on the extractor housing, by means of which the polluted air that is sucked in can be freed of impurities.
  • the range hood housing can have an air outlet through which the cleaned air can exit the range hood housing.
  • the filter or filters which can in particular represent grease filters, are provided in the extractor housing in the direction of flow in front of the suction fan.
  • the filter or filters can be located in the suction opening of the extractor housing, for example.
  • the filter or filters can, for example, be introduced from above into the extractor housing on its front side. This way of inserting the filter is of particular advantage because it is possible for the user to remove and clean the filters even with an extractor hood in which a further housing is arranged in front of the suction opening.
  • the suction opening is preferably provided in the front of the extractor housing.
  • the suction opening can form the entire front of the extractor housing or it can be an opening that extends only over part of the front of the extractor housing.
  • Directional information such as front, back, top and bottom refer to an extractor hood mounted on a room wall, unless otherwise specified.
  • the side or direction that faces or is directed towards the wall of the room is referred to as the rear or rear.
  • the side facing away from the room wall or the direction leading away from the room wall, which as a rule faces the user, is referred to as the front or front.
  • the extractor hood also has an air outlet housing.
  • the air outlet housing can represent a housing that is separate from the extractor housing or can be connected to it.
  • the air outlet housing comprises at least one air outlet opening.
  • the air outlet opening is an opening in the air outlet housing through which air flows out of the air outlet housing.
  • the air can preferably be blown out of the air outlet housing.
  • the air outlet housing is arranged in such a way that the air outlet opening of the air outlet housing is directed towards the suction opening of the extractor housing.
  • An air outlet opening is referred to as being directed towards the suction opening, via which air can be discharged in the direction which is directed towards the suction opening.
  • the air flow emerging from the air outlet opening can impinge directly on the suction opening or can be guided indirectly to the suction opening by further components of the extractor hood, in particular air guide elements or housing parts.
  • the air outlet opening is preferably at a distance from the suction opening. This means that these are not in direct contact with one another. In this way, the formation of an air curtain can be ensured and it can be prevented that all of the air discharged from the air outlet opening is sucked directly into the suction opening without having previously influenced vapor.
  • An air curtain can be formed between the air outlet opening and the suction opening.
  • An air curtain is preferably a planar and directed air flow between the air outlet opening and the suction opening.
  • the contaminated air to be sucked in which is also referred to below as vapor
  • the suction opening can reliably reach the suction opening and thus be reliably sucked in.
  • rising vapors that reach an extractor hood according to the invention mounted above the hob can be deflected and directed to the suction opening. Due to the higher efficiency of the extractor hood according to the invention, it can still ensure sufficient extraction of vapors, particularly at lower fan speeds, so that the user is exposed to lower noise levels.
  • the air outlet housing is a separate housing from the extractor housing.
  • a separate housing is referred to here as a housing in which there is no connection between the interior of the extractor housing and the air outlet housing for the transmission of air, for example no air duct.
  • This embodiment is advantageous because both the shape as the material of the air outlet housing can also be selected independently of that of the extractor housing.
  • the extractor housing and the air outlet housing can be manufactured separately from one another.
  • the extractor housing and the air outlet housing are preferably connected to one another.
  • the air outlet housing can, for example, be attached to the extractor housing via connecting elements that represent rods.
  • the air outlet housing preferably has at least one intake opening through which air can be drawn in from the room in which the extractor hood is operated, in particular from the kitchen. The air sucked in in this way can then be discharged in the direction of the suction opening of the extractor housing.
  • the air outlet housing particularly preferably has an additional fan which is accommodated in the air outlet housing. With this additional fan, the air can be sucked in and blown out through the air outlet opening.
  • the separate design of the extractor housing and the air outlet housing enables advantageous, new product designs to be realized in which large and bulky extractor hoods are optically broken up, as the air curtain concept allows a lighter, more subtle and iconic design.
  • the separate handling also allows the air curtain to be optimally adapted to the kitchen conditions, which can be influenced, for example, by sloping ceilings and ceiling heights.
  • the distance between the extractor housing and the air outlet housing can be adjusted by choosing a suitable length of the connecting elements, for example rods, or by choosing telescopic rods or rails.
  • the air outlet housing is connected to the extractor housing via at least one connecting element and at least one connecting element has at least one channel.
  • a guide on the connecting element is referred to as a channel.
  • the length of the channel corresponds at least to the length of the connecting element.
  • the channel can be an open channel, that is to say the channel has an open cross section.
  • the channel can for example be a groove or channel, which is introduced, for example, in the top of the connecting element.
  • the channel can be a guide channel for guiding cables or hoses, for example.
  • the channel can be a closed channel, that is to say have a closed cross section, for example a round or rectangular cross section.
  • the closed channel can be on the top or another side of the connecting element or in the interior of the connecting element. In this embodiment of the channel, too, it can serve as a guide channel for cables or hoses.
  • the channel represents a closed channel or represents an open channel that runs inside the connecting element, a cable or hose connection that is invisible to the outside can be established between the extractor housing and the air outlet housing.
  • the duct is an air duct for connecting the air outlet housing to the extractor housing.
  • some of the air that is sucked into the extractor housing by the suction fan can be conducted from the extractor housing into the connecting element. From there, the air flows into the air outlet housing and finally through the air outlet opening again in the direction of the suction opening of the extractor housing.
  • the connecting element or the connecting elements, in which one or more air ducts are formed can be arranged on the extractor housing in such a way that they are connected to the extractor housing in the flow direction behind the suction opening and in particular behind a filter of the extractor hood.
  • the air duct is provided on the extractor housing in a region in the direction of flow in front of the filter. According to the invention, this is possible because the air that is guided to the air outlet housing via the air duct is then output again in the direction of the suction opening and can thus be cleaned at the latest by a filter in the extractor housing.
  • the extractor hood has at least one additional fan for generating at least part of an air flow that is directed from the air outlet opening onto the suction opening.
  • An additional fan is therefore referred to as a fan which is provided in the extractor hood in addition to the suction fan of the extractor hood.
  • the additional fan can for example be introduced in the connecting element in which the air duct is formed between the extractor housing and the air outlet housing.
  • the additional fan is also arranged in the air outlet housing itself.
  • the additional fan can be arranged adjacent to the air outlet opening of the air outlet housing, that is to say in the flow direction in front of the air outlet opening in the vicinity thereof.
  • at least one intake opening is preferably provided in the air outlet housing, via which air can be sucked into the air outlet housing from the environment around the extractor hood, that is, in particular from the kitchen.
  • the intake opening is preferably in the top of the air outlet housing.
  • the provision of intake opening (s) on the air outlet housing is necessary in order to remove air that is discharged in the direction of the intake opening should be provided in the air outlet housing.
  • the provision of intake openings can also be advantageous in the embodiment in which the extractor housing is connected to the air outlet housing via one or more air ducts. In addition to the air that enters the air outlet housing through the air duct or ducts, this also releases supply air into the Air outlet housing sucked in. In this way, the volume of air by which the air curtain is to be generated can be increased.
  • the at least one additional fan is a cross-flow fan.
  • the cross-flow fan can also be referred to as a tangential fan. This type of fan has the advantage that it is small in size and therefore the air outlet housing can also be small in size. This improves the visual impression of the extractor hood.
  • a larger amount of air can be conveyed with cross-flow fans. Adequate air throughput can be guaranteed even at low speeds.
  • the noise development when operating a cross-flow fan is low.
  • the suction fan is also a cross-flow fan.
  • the extractor hood comprises an air inlet housing, which is upstream of the suction opening in the direction of flow and an air inlet opening is provided in the air inlet housing, via which air enters the air inlet housing and is guided through the air inlet housing at least to the suction opening.
  • the shape of the air inlet opening can be changed compared to the shape of the suction opening.
  • air inlet openings can be provided as gaps or slots.
  • the air outlet opening is oriented such that it directs the air curtain onto the air inlet opening. Only after passing through the air inlet opening does the air reach the suction opening.
  • the extractor hood has two connecting elements that form an air guide unit with the air outlet housing form.
  • the air outlet housing and the connecting elements can form a continuous air line.
  • the air outlet housing and the connecting elements can be formed as an integral unit.
  • the transition between the air outlet housing and the individual connecting elements is not visible.
  • the area of the air guide unit in which the air outlet opening is provided and in which an additional fan is optionally arranged forms the air outlet housing.
  • the air outlet housing and in particular the area of the air guiding unit preferably extend in the width direction of the extractor hood.
  • the connecting element or elements extend in the depth direction of the extractor hood.
  • the connecting elements can run horizontally or be inclined to the horizontal, in particular be inclined upwards from the back to the front.
  • the end of the connecting elements facing away from the air outlet housing is connected to the extractor housing or the air inlet housing.
  • An air duct is formed in the interior of the connecting elements.
  • the air guiding unit which comprises the air outlet housing and the connecting elements, preferably has an arc shape, the area by which the air outlet housing is formed preferably extending straight in the width direction of the extractor hood and the connecting elements forming curved areas, in particular semicircles.
  • the air guiding unit is preferably open at the top and bottom. The open structure improves the appearance of the extractor hood. However, since an air curtain continues to be output from the air outlet housing, an unimpeded flow of vapor through the open structure of the air guiding unit can be prevented.
  • the air inlet housing, the two connecting elements and the air outlet housing form an air guiding unit.
  • the air inlet housing, the connecting elements and the air outlet housing can form an integral unit.
  • a continuous air line extends between the individual parts of the air guiding unit.
  • the area of the air guiding unit in which the at least one air inlet opening is provided forms the air inlet housing.
  • the air inlet housing and in particular the at least one air inlet opening preferably extends in the width direction of the extractor hood.
  • the air inlet opening is provided on the front of the air inlet housing.
  • the air guiding unit in particular in the embodiment in which it comprises both the air outlet housing, the connecting elements and the air inlet housing, can have an annular shape.
  • the air guiding unit has an elongated ring shape.
  • the extractor hood preferably does not have a cover for the passage formed by the annular shape in the extractor hood.
  • the open structure improves the appearance of the extractor hood.
  • the areas that form the air outlet housing and the air inlet housing are preferably designed as straight areas.
  • the connecting elements have a curved shape.
  • At least one circumferential gap is formed on the inside of the ring-shaped air guiding unit, which gap forms the air outlet opening in the area of the air outlet housing and the air inlet opening in the area of the air inlet housing.
  • the gap can be veneered at least in some areas. This creates a clear separation between the air outlet opening and the air inlet opening.
  • the cover in particular in the embodiment in which there is an additional fan in the air outlet housing, is not absolutely necessary.
  • a baffle plate is arranged on the suction opening of the air outlet housing.
  • the baffle plate largely covers the suction opening, but has a size that is smaller than the size of the suction opening.
  • an edge gap can be formed between the outer edge of the suction opening and the outer edge of the baffle plate, via which edge suction takes place.
  • the baffle plate can prevent the air curtain from hitting the suction opening directly.
  • the suction fan is a cross-flow fan and at least one air circulation opening is provided in the extractor housing.
  • the at least one air circulation opening is preferably provided in the top of the extractor housing.
  • An odor filter can be provided in or on the air circulation opening. Since the air circulation opening is provided on the top of the extractor housing, the air exiting through it does not affect the vapor flowing into the extractor hood from below and the air curtain.
  • a device for the optical projection of information and / or data is arranged on the air outlet housing.
  • the device for projection can also be called a projector.
  • the projector can be used to project information onto the extractor housing and / or the air inlet housing and / or the hob and / or the wall, such as the current fan level or a time, for example.
  • FIG. 1a a schematic, side view of a first embodiment of the extractor hood according to the invention
  • Figure 1b a schematic, perspective front view of the first
  • FIG. 1c a schematic plan view of the first embodiment of FIG.
  • FIG. 2 a perspective top view of the first embodiment of FIG.
  • FIG. 3 a perspective view of the first embodiment of FIG.
  • FIG. 4 a perspective view from below of the first embodiment of FIG.
  • FIG. 5 a perspective top view of the first embodiment of FIG.
  • FIG. 6 a perspective view of a second embodiment of FIG.
  • FIG. 7 a perspective view of the first embodiment of FIG.
  • FIG. 8 a schematic, perspective illustration of a third
  • FIG. 9a a schematic front view of the third embodiment of FIG.
  • FIG. 9b a schematic side view of the third embodiment of FIG.
  • FIG. 10 a schematic view of the third embodiment of FIG.
  • Extractor hood with projector Extractor hood with projector.
  • Figure 1 comprising the sub-figures 1a, 1b and 1c, and Figure 2 show a first embodiment of the extractor hood 1.
  • the extractor hood 1 is composed of the extractor housing 2, an air inlet housing 11, two connecting elements 7 and an air outlet housing 5.
  • the suction opening 3 is formed.
  • the air inlet housing 11 is arranged in front of the suction opening 3 and thus in front of the extractor housing 2.
  • the extractor housing 2 has a Air circulation opening 13 in the top.
  • the air circulation opening is made in the rear area of the top of the extractor housing 2.
  • the extractor housing 2 is preferably attached to its rear wall on a room wall.
  • a filter element 20 is provided in the front area, that is to say on or in the flow direction behind the suction opening 3.
  • the filter element 20 completely covers the suction opening 3 of the extractor housing 2.
  • the filter element 20 is introduced into the extractor housing 2 from the top of the extractor housing 2.
  • a filter opening 14 is provided in the top of the extractor housing 2.
  • the filter element 20 represents a grease filter.
  • An intake fan 4 (not visible in FIG. 1) is accommodated in the extractor housing 2. Vapor 18 (see FIG. 3) is sucked in through this suction fan 4.
  • the suction fan 4 can, for example, be a cross-flow fan, so that an effective vapor intake is achieved with a fan over a large length of the suction opening 4.
  • the filter element 20 is located in front of the suction fan 4 in the direction of flow and the air circulation opening 13 is located behind the suction fan 4 in the direction of flow.
  • An air inlet housing 11 with an air inlet opening 15 is arranged in front of the extractor housing 2.
  • the extractor housing 2 and the air inlet housing 11 have openings such that air can flow from the air inlet housing 11 to the extractor housing 2.
  • the extractor housing 2 and the air inlet housing 11 can, for example, also consist of a single part which can be hollow on the inside.
  • Connecting elements 7 are arranged on the sides of the air inlet housing 11.
  • the connecting elements 7 each have a semicircular shape and are hollow or have a channel running in them.
  • the connecting elements 7 extend forward.
  • the connecting elements 7 extend upwardly inclined to the front.
  • An air outlet housing 5 is arranged at the front ends of the connecting elements 7.
  • An air outlet opening 6 is provided on the rear side of the air outlet housing 5, that is to say the side of the air outlet housing 5 which faces the air inlet housing 11. The air outlet opening 6 is thus directed towards the air inlet housing 11 and in particular towards the suction opening 3 located behind the air inlet housing 11 in the direction of flow.
  • the air outlet housing 5 has two intake openings 10 which are located in the upper side of the air outlet housing 5.
  • An additional fan 9, not shown in FIG. 1, is also located in the air outlet housing 11.
  • the additional fan 9 is arranged such that the additional fan 9 sucks in air through the intake opening 10 and outputs it from the at least one air outlet opening 6.
  • the air outlet opening 6 is arranged and aligned in such a way that a directed air flow in the direction of the suction opening 3 is created over the width of the air outlet housing 5.
  • the additional fan 9 can be designed, for example, as a cross-flow fan. This makes it possible to use a fan to achieve a uniform flow of air over a great length from the at least one air outlet opening 6.
  • the air inlet housing 11, the two connecting elements 7 and the air outlet housing 5 form a continuous air guiding unit.
  • the air unit has an annular shape.
  • the air inlet opening 15 is formed by the gap.
  • the air outlet opening 6 is formed by the gap.
  • a strip of material is provided in the gap, by means of which a part of the gap is covered. At the upper edge of the material band and the lower edge of the material band there is a slot between the material band and the gap.
  • two air inlet openings 15 are formed in the area of the air inlet housing 11, which extend over the width of the air inlet housing 11, and two air outlet openings 6 are formed in the area of the air outlet housing 5.
  • the strip of material in the area of the air inlet housing 11 can prevent the air flow emitted by the air outlet opening 6 from reaching the suction opening 3, which is located behind the air inlet housing 11 in the direction of flow.
  • FIG. 3 and FIG. 4 show further views of the first embodiment of the extractor hood 1 and illustrate the mode of operation of the air curtain 19.
  • the extractor hood is attached to a wall above a hob 16.
  • On the Cooking field 16 for example, food is prepared in a cooking vessel 17, whereby vapors 18 arise.
  • the vapor 18 rises due to the thermals, where it is sucked into the extractor housing 2 by the suction fan 4 via the air inlet openings 15 and the suction opening 3.
  • the additional fan 9 blows air on the air outlet opening 6 of the air outlet housing 5 in the direction of the intake opening 3, in particular in the direction of the air inlet housing 11 arranged in the direction of flow in front of the intake opening 3 sucked in.
  • the air flow takes place over the greatest possible length of the air outlet opening 6, the length of which is limited by the width of the air outlet housing 5 and the air outlet opening 6 preferably extends over the entire width of the air outlet housing 5.
  • the suction fan 4 sucks in the air flow preferably over the greatest possible length through the air inlet openings 15 of the air inlet housing 11, the length of the suction opening 3 being limited by the width of the air inlet housing 11.
  • a flat and directed air curtain 19 is formed between the air outlet opening 6 and the air inlet opening 15 and thus also the suction opening 3.
  • the air curtain 19 lies in the plane that is defined by the air guiding unit.
  • the geometric dimensions of the extractor hood 1 and in particular of the air guide unit are approximately adapted to those of the hob 16.
  • the extractor hood 1 and in particular the air guiding unit can, however, also be larger or smaller than the hob 16. If vapors 18 rise from the cookware 17, this is partly captured by the direct suction flow of the suction fan 4. The vapor 18, which is not detected, and in particular would rise further upwards, gets into the air curtain if the extractor hood 1 is sufficiently dimensioned, where it is transported to the suction opening and finally sucked off.
  • FIG. 5 shows the first embodiment of the extractor hood 1 with the filter element 20 removed.
  • the filter 20 can, as shown, be removed upwards from the extractor housing 2, in particular via the filter opening 14, and, for example, cleaned or changed.
  • a second embodiment of the extractor hood 1 is shown. This embodiment differs from the first embodiment only in that the circumferential gap provided on the inside of the annular air guide unit is not covered by a strip of material.
  • a rib-shaped filter element is rather provided in the circumferential gap.
  • the gap thus forms the air inlet opening 15 over its entire height.
  • lighting 21 is provided on the underside of the extractor housing 2, which is designed, for example, as a reading light and / or as ambient lighting.
  • the extractor device has a projector 23.
  • the projector 23 is arranged on the rear side of the air outlet housing 5 and projects information or images 24 in the present case onto the lower area of the air inlet housing 11, in particular below the air inlet openings 15.
  • the current operating mode and the remaining time are displayed via the projector, the extractor hood 1 still remains in this mode.
  • a red, curly background is shown.
  • the lower region of the air inlet housing 11 and preferably the entire lower region of the air guiding unit is preferably inclined from the vertical.
  • the lower region of the air guiding unit forms an upwardly tapering region. In this way, the supply of the vapor into the area of the air curtain can be improved.
  • the projected image 24 is more visible to the user of the extractor hood 1.
  • the extractor hood 1 like the extractor hood 1 of the first and second embodiment, consists of an extractor housing 2 in which a suction fan 4 is installed. On the extractor housing 2. In the front of the extractor housing 2, the suction opening 3 is formed. In the embodiment shown, the size of the suction opening 3 is smaller than the size of the extractor housing 2. In particular, the suction opening 3 has a smaller height and a smaller width than the extractor housing 2 in the rear area of the extractor housing 2. In front of the suction opening 3, a baffle plate 12 is arranged, which is a smaller size than that Has suction opening 3. Air and vapor are thus sucked in via the edge gap which is formed between the suction opening 3 and the baffle plate 12. For operation over a hob 16, the extractor hood 1 is attached to a wall.
  • Connecting elements 7 are arranged on the sides of the extractor housing 2, in particular in the part of the extractor housing 2 in which the suction opening 3 is formed.
  • the form and function of the connecting elements 7 correspond to the connecting elements 7 of the first and second embodiment of the extractor hood 1.
  • the connecting elements 7 are connected to the air outlet housing 5, that is, they go into it above.
  • the air outlet housing 5 has a plurality of air outlet openings 6 on its rear side. The air outlet openings 6 are aligned such that air can flow through the air outlet openings 6 in the direction of the suction opening 3.
  • the suction fan 4 sucks in vapors 18 which rise above a hob 16.
  • the vapor can be cleaned by the edge suction between the baffle plate and the suction opening 3.
  • a filter element (not shown) can be provided behind the baffle plate 12. A portion of this filtered air can then be passed from the extractor housing 2 into the connecting elements 7, through which a channel 8 is formed for the air line. The air then flows further from the connecting element 7 into the air outlet housing 5, where the air is then output through the air outlet opening 6, so that an air curtain 19 is created in the direction of the suction opening 3.
  • the air curtain 19 is generated by the suction fan 4 in the extractor housing 2. If vapors 18 rise under the extractor hood 1, this is partially sucked directly into the suction opening 3 by the suction fan 4. The part of the vapor that is not directly sucked in is captured by the air curtain 19 and thus transported to the suction opening 3.
  • the third embodiment can also have a projector 23, which is provided on the air outlet housing 5, for example. By means of this projector 23, information and images 24 can be projected onto the baffle plate 12. Furthermore, in the embodiment shown, the extractor hood 1 is provided with lighting 21.
  • part of the filtered exhaust air can be diverted and passed directly over the hob via connecting elements, which can also be referred to as side arms, where they then lead to the steam suction area, in particular an intake opening of the extractor housing, directed air curtain generated.
  • an additional fan which can also be referred to as a second fan motor for generating an additional air flow, can be used.
  • the air outlet openings of the air outlet housing which can also be referred to as air curtain nozzles, are located in the front part of the air guide unit, which preferably forms an annular frame structure. Rising vapors are better captured by the air curtain and, for example, directed to the vapor intake area, in particular the suction opening, via a centrally located baffle plate.
  • the present invention has a number of advantages.
  • the invention enables new geometries for product design. Large-area designs can be optically broken up with the present invention and appear lighter, more subtle and iconic thanks to the air curtain concept.
  • the suction performance of the extractor device is significantly increased, since rising vapors can be captured and directed to the suction opening.
  • a smaller and more energy-efficient fan unit in particular an intake fan. The This does not affect the suction performance. If a conventional suction fan is used, the main advantage is that the extractor hood can be operated at a lower level and is therefore quieter and yet very effectively draws in rising vapors.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)

Abstract

La présente invention concerne une hotte aspirante (1), comprenant un corps de hotte aspirante (2) pourvu d'au moins une ouverture d'aspiration (3) et au moins un ventilateur (4) qui est prévu pour aspirer de l'air dans l'ouverture d'aspiration (3) et qui est disposé dans le corps de hotte aspirante (2). La hotte aspirante (1) est caractérisée en ce que ladite hotte aspirante (1) comprend un corps de sortie d'air (5) pourvu d'au moins une ouverture de sortie d'air (6) pour souffler de l'air hors du corps de sortie d'air (5), et ladite au moins une ouverture de sortie d'air (6) est dirigée vers l'ouverture d'aspiration (3).
EP20819714.5A 2019-12-19 2020-12-03 Production d'un rideau d'air pour améliorer l'aspiration des vapeurs dans des hottes d'aspiration Pending EP4078037A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019220295.0A DE102019220295A1 (de) 2019-12-19 2019-12-19 Erzeugung eines Luftvorhangs zur Verbesserung des Wraseneinzugs bei Dunstabzugshauben
PCT/EP2020/084411 WO2021122026A1 (fr) 2019-12-19 2020-12-03 Production d'un rideau d'air pour améliorer l'aspiration des vapeurs dans des hottes d'aspiration

Publications (1)

Publication Number Publication Date
EP4078037A1 true EP4078037A1 (fr) 2022-10-26

Family

ID=73698848

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20819714.5A Pending EP4078037A1 (fr) 2019-12-19 2020-12-03 Production d'un rideau d'air pour améliorer l'aspiration des vapeurs dans des hottes d'aspiration

Country Status (3)

Country Link
EP (1) EP4078037A1 (fr)
DE (1) DE102019220295A1 (fr)
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CN108980938B (zh) * 2018-08-22 2023-02-24 珠海格力电器股份有限公司 一种升降式风幕导流装置及油烟机

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