EP4067753A2 - Agencement de conduit plat pour une hotte aspirante à circulation descendante - Google Patents

Agencement de conduit plat pour une hotte aspirante à circulation descendante Download PDF

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Publication number
EP4067753A2
EP4067753A2 EP22163306.8A EP22163306A EP4067753A2 EP 4067753 A2 EP4067753 A2 EP 4067753A2 EP 22163306 A EP22163306 A EP 22163306A EP 4067753 A2 EP4067753 A2 EP 4067753A2
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EP
European Patent Office
Prior art keywords
duct
section
flat
cross
sections
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
EP22163306.8A
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German (de)
English (en)
Other versions
EP4067753A3 (fr
Inventor
Hans-Joachim Naber
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.)
Naber Holding GmbH and Co KG
Original Assignee
Naber Holding GmbH and Co KG
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 Naber Holding GmbH and Co KG filed Critical Naber Holding GmbH and Co KG
Publication of EP4067753A2 publication Critical patent/EP4067753A2/fr
Publication of EP4067753A3 publication Critical patent/EP4067753A3/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes
    • F24C15/2042—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft

Definitions

  • the invention is based on a flat duct arrangement for a downdraft extractor hood, the flat duct arrangement having a first duct section for connection to a downdraft extractor hood and a second duct section for connection to at least one recirculation outlet.
  • a flat channel arrangement is in the DE 10 2015 103 034 A1 described.
  • a recirculation outlet is from the DE 10 2017 109 986 B4 known.
  • Another flat duct arrangement for a downdraft extractor hood is in DE 10 2018 113 818 B9 shown.
  • a downdraft extractor hood can be fluidly connected via a duct system of the flat duct arrangement to a recirculating air outlet installed in the base of a piece of kitchen furniture for dissipating vapors from a hob.
  • the circulating air outlet represents the greatest flow resistance of the flat duct arrangement. Due to the often very low base heights, the air outlet surface of the circulating air outlet cannot be enlarged at will in order to reduce the flow resistance. In the usual installation situations of the recirculating air outlet in the base of a piece of kitchen furniture, the maximum height of the recirculating air outlet is often limited to 60 mm.
  • the flat duct arrangement has a flat Y-duct piece in the direction of flow from the first duct section to the second duct section with an air inlet facing the first duct section and two air outlets facing the second duct section.
  • the flat duct arrangement according to the invention thus allows the second duct section to be designed in two parts, for example having two fluid ducts which are fluidically separate from one another, in particular flat ducts.
  • the fluid channels can have a cross section that is larger than one cross section of the first channel section.
  • the fluid channels can have a smaller dimension in one dimension, for example in the height direction, if they are designed as flat channels compared to one-piece flat channels and still provide a sufficient or even a larger opening cross section overall compared to those from the prior art known arrangements.
  • the two air outlets facing the second duct section can be connected directly or via a fluid duct, such as a flat duct, to a separate recirculation outlet or to a single recirculation outlet, which has a greater width for a given height that is limited on site and both air outlets or the outlets are connected to it Covers fluid channels.
  • a fluid duct such as a flat duct
  • the air outlet area of the recirculation outlets can be increased and the pressure loss reduced. Due to the reduced flow speeds, this allows the flat duct arrangement and in particular the downdraft extractor hood connected to it to be operated in an energy-efficient manner.
  • the two air outlets facing the second duct section can in particular be arranged horizontally next to one another and open directly or indirectly into the same recirculating air outlet or into two separate recirculating air outlets. If the two air outlets open into the same recirculating air outlet, the recirculating air outlet can be made correspondingly wider given the height that is limited on site. If the two air outlets facing the second duct section open into separate circulating air outlets, the circulating air outlets can be arranged directly next to one another and adjacent to one another or at a distance from one another.
  • the flat duct can be used, for example, as the one in FIG EP 3 401 613 B1 be formed channel described.
  • the second channel section can have two sub-channel sections that are fluidically separate from one another downstream of the flat Y-channel piece.
  • the sub-channel sections that are fluidically separated from one another can each be designed as a flat channel and preferably arranged next to one another in the horizontal direction. They can be at a distance from one another or be arranged directly adjacent to one another.
  • the two partial duct sections can open into the same recirculating air outlet or into separate recirculating air outlets.
  • the two sub-channel sections can be the same Flow cross-section and preferably have the same cross-sectional area.
  • the two sub-channel sections are particularly preferably of identical design, so that they generate the same flow resistance.
  • the two sub-duct sections can each open into a recirculation outlet, the recirculation outlet of the two sub-duct sections being the same recirculation outlet and extending as a continuous recirculation outlet over the outlet cross-sections of both sub-duct sections.
  • the circulating air outlet can have a circulating air filter or be a circulating air filter. Accordingly, it can be provided that the two partial duct sections open into the same circulating air filter or into circulating air filters designed as separate circulating air filters.
  • the circulating air outlet or the circulating air filter can have an exhaust air grille on its outside, for example a lamellar grille with horizontal air outlet lamellas.
  • the two partial duct sections can open into different circulating air outlets that are preferably spaced apart from one another by more than a horizontal width of one of the two partial duct sections.
  • Such embodiments make it possible, even in installation situations in which there is not enough space for the arrangement of a recirculation outlet that is wide in the horizontal direction or several recirculation outlets next to one another, to arrange the recirculation outlets in spaced-apart positions, for example in the base of different kitchen furniture, and so on better use of space is achieved.
  • At least one of the two partial duct sections can be designed at least in sections as a flexible duct, for example as a flex duct, with at least one variable radius of curvature. This measure also contributes to the flexible connection of the circulating air outlets, which are arranged variably and according to the boundary conditions specified on site, to the flat duct arrangement.
  • a channel length of the first channel section can be shorter in the direction of flow than a channel length of the second channel section in the direction of flow.
  • the duct length of the first duct section can preferably be made as short as possible on site in order to make the second duct length of the second duct section as large as possible. Due to the division of the second channel section into two, it has greater structural flexibility with regard to widening the channel cross section in order to reduce the flow resistance.
  • the duct length of the first duct section from a connection of the first duct section for a downdraft extractor hood to the Y-flat duct piece can be smaller than the duct length of the second duct section from a connection of the second duct section for a recirculating air outlet to the Y-flat duct piece.
  • An inlet cross-section of the air inlet and both outlet cross-sections of the air outlets of the flat Y-duct piece can be arranged in planes parallel to one another.
  • the two outlet cross sections of the air outlets of the Y flat duct piece can be arranged in the same plane.
  • the Y-flat duct piece can end with its two air outlets in a 90° pipe bend.
  • an inlet cross section of the air inlet and both outlet cross sections of the air outlets of the Y flat duct piece can be arranged in a horizontal plane.
  • An outlet cross-section of the 90° elbow may be arranged in a vertical plane.
  • the 90° pipe bend can thus be arranged at a transition of the flat duct arrangement, in which the flat duct arrangement changes from a vertical course in the direction of flow for discharging vapors from the hob into the base area of a piece of furniture to a course that is horizontal in the direction of flow for the passage of vapors through the base of the furniture is diverted.
  • the 90° pipe bend can have at least one projection on its outer radius, which has a horizontal contact surface.
  • the projection can be in the form of a web or plate.
  • the horizontal contact surface can be aligned with an outside of the outlet cross section of the 90° pipe bend on a side of the 90° pipe bend facing away from the flat Y-channel piece.
  • the 90° pipe bend is thus prepared to support the flat duct arrangement, in particular a vertically running duct section, and thus to mechanically relieve a connection of the flat duct arrangement to the downdraft extractor hood.
  • the Y-flat duct piece can end with its two air outlets via a reducer in each case in a 90° pipe bend.
  • the reducer can open out with a first flat duct connection cross-section in one of the outlets of the Y-flat duct piece and with a second flat duct connection cross-section in the 90° pipe bend.
  • At least one shorter side of the first flat channel connection cross-section can have a larger dimension than a shorter side of the second flat channel connection cross-section.
  • the sum of the areas of the cross-sections of the air outlets of the Y-flat duct may be greater than the area of the cross-section of the air inlet of the Y-flat duct.
  • the sum of the areas of the cross sections of the air outlets can preferably be at least 20% greater than the area of the cross section of the air inlet.
  • the air outlets and preferably also the air inlet of the Y flat duct piece can each have a rectangular cross section, with an aspect ratio of the cross section of the air inlet preferably being between 1:2.2 and 1:2.5.
  • the second channel section downstream of the Y-flat channel piece has two fluidically separate sub-channel sections with a rectangular cross section, these can be arranged with their shorter sides opposite one another in the horizontal direction next to one another, adjacent to or spaced apart from one another.
  • an aspect ratio of the combined cross sections of the partial channel sections can be between 1:3.5 and 1:4.5 and preferably 1:4.
  • the combined cross-sections can accordingly form an overall cross-section, which is composed of the two cross-sections of the partial channel sections, the partial channel sections being combined via their shorter sides to form a coherent rectangular cross-section, the dimensions of which on the one hand correspond to the dimensions of the shorter sides of the partial channel sections and on the other hand to the sum of the dimensions of the longer sides of the cross sections.
  • the air outlets and the air inlet can each have a rectangular cross section, with a height of the respective cross section, which runs perpendicular to a width of the respective cross section, being smaller than the width.
  • the ratio between the height of the cross section of the air inlet and the heights of the cross sections of the air outlets can be at least 3:2.
  • the Y flat duct piece can have a divider with two divider walls diverging in the direction of flow, from which the volume flow flowing in via the air inlet is divided into two partial volume flows.
  • the divider can be arranged with its divider walls symmetrically to a center line of an inlet cross section of the air inlet of the flat Y-duct piece.
  • the two divider walls can adjoin one another on the air inlet side and diverge from one another at an acute angle in the direction of flow.
  • the flat channel arrangement can have a hydraulic diameter of at least 8 cm and more preferably a hydraulic diameter of at least 8.5 cm.
  • a Y flat duct piece can be provided, which divides the volume flow coming from a downdraft extractor hood into two partial flows and changes the cross section, in particular increasing the sum of the cross sectional areas.
  • a division of the volume flow into two partial volume flows of equal size is particularly preferred.
  • the outlet cross-sections of the air outlets of the Y flat duct piece facing the second duct section can have a maximum duct height of 60 mm, so that installation in the base of a piece of furniture with a particularly low base height is possible.
  • the Y-flat duct piece is particularly preferably arranged closer to a connection point for a downdraft extractor hood than to a connection point for a recirculation outlet, because early distribution of the volume flow can lead to an overall reduction in the flow resistance of the duct arrangement.
  • the 1 shows a flat channel arrangement 1 according to the prior art.
  • This has a vertical first duct section 2 via which the flat duct arrangement 1 is connected to a downdraft extractor hood 100 .
  • the flat duct arrangement 1 also has a horizontal second duct section 3, via which the flat duct arrangement 1 is connected to a circulating air outlet 200 designed as a circulating air filter.
  • the first and the second channel section 2 , 3 are connected to one another via a 90° pipe bend 7 .
  • At least the first and the second channel section 2, 3 are designed as flat channels 300, which have a substantially rectangular channel cross section.
  • a suitable flat channel is for example in the EP 3 401 613 B1 described.
  • a suitable pipe bend 7 shows, for example, the EP 1788 259 B2 .
  • a trained as a base ventilation box circulating air outlet 200 is in DE 10 2017 109 986 B4 described.
  • the 2 shows in comparison a flat channel arrangement 1 according to the prior art (far left in the illustration according to 2 ) and two embodiments of a flat channel arrangement 1 according to the invention (in the middle and on the right in the view according to 2 ).
  • the flat duct arrangements 1 according to the invention have a flat Y-duct piece 4 in the direction of flow from the first duct section 2 to the second duct section 3 .
  • the Y-flat duct piece 4 has an air inlet 5 facing the first duct section and two air outlets 6 facing the second duct section 3 .
  • the opening cross sections of the air inlet 5 and the air outlets 6 are arranged in planes parallel to one another, with the air outlets 6 preferably being arranged in the same plane, in each case based on the opening cross sections of the inlet 5 and the outlets 6.
  • the air outlets 6 open into a reducer 12, via that the flat duct cross section of the air outlets 6 is reduced, in particular in terms of its height, to a cross section of the two partial duct sections 3.1, 3.2.
  • the reducers 12 each open into a 90° pipe bend 7, to which one of the partial channel sections 3.1, 3.2 is connected downstream.
  • the second channel section 3 is divided into a first partial channel section 3.1 and a second partial channel section 3.2.
  • the sum of the cross sections of the two partial channel sections 3.1, 3.2 is greater than the cross section of the first channel section 2, so that the volume flow conducted through the flat channel arrangement 1 in the region of the second channel section 3 is less Flow resistance is opposite in comparison to the first channel section 2. Accordingly, provision can be made to arrange the Y-flat channel piece 4 as far forward as possible in the direction of flow, thus making the first channel section 2 as short as possible.
  • the two in 2 The embodiments according to the invention shown differ in particular in that in the central embodiment the two partial duct sections 3.1, 3.2 open into the same circulating air outlet 200 designed as a circulating air filter, which can be made correspondingly wider compared to the circulating air outlet 200 of the embodiment according to the prior art and accordingly given installation height or possibly due to structural conditions slightly reduced overall height due to its greater width can have a larger opening cross section.
  • the two partial duct sections 3.1, 3.2 are designed as flexible hoses, which makes it possible to flexibly arrange the two circulating air outlets 200, for example depending on the structural conditions.
  • the two partial duct sections 3.1, 3.2 open into separate air recirculation outlets 200, these air recirculation outlets 200 being constructed in the same way as the air recirculation outlet 200 according to the prior art (illustration on the far left) or differing in terms of their height and in particular having a lower height.
  • FIG.2 an installation situation of a flat duct arrangement 1 according to the invention is shown, in which the flat duct arrangement 1 fluidically connects a downdraft extractor hood 100 to a one-piece recirculating air outlet 200 arranged in the base of the piece of furniture 400 .
  • the flat duct arrangement 1 fluidically connects a downdraft extractor hood 100 to a one-piece recirculating air outlet 200 arranged in the base of the piece of furniture 400 .
  • the Fig.2 is the in the 3 and 4 shown embodiment at least structurally corresponding to the middle embodiment of 2 formed, ie the two partial channel sections 3.1, 3.2 open into the same recirculation outlet 200, which can be formed in one piece, such as over the entire width of the recirculation outlet 200 integrally formed air guide lamellae.
  • the duct arrangement 1 is connected to the extractor hood 100 via the first duct section 2 .
  • the first duct section 2 opens directly into the air inlet 5 of the Y flat duct piece 4 .
  • the Y-flat duct piece 4 opens into a reducer 12.
  • the Y-flat duct piece 4 and the reducer 12 can be designed in one piece or in a modular manner, ie as separate components.
  • the Y-flat duct piece 4 with the reducer 12 opens into a 90° pipe bend 7, which opens downstream into the second duct section 3 with the two partial duct sections 3.1, 3.2.
  • the 90° pipe bend 7 has a projection 9 on its outer radius 8, for example at least one web projecting in the radial direction, which has a horizontal contact surface 10 which is located on a side of the 90th ° Pipe bend 7 is aligned with an outer edge 11 of the outlet cross section of the 90° pipe bend 7 .
  • the vertically running part of the flat duct arrangement 1, in particular the first duct section 2 is supported with the Y-flat duct piece 4 connected to it, together with the reducer 12, so that the connection point of the flat duct arrangement 1 to the downdraft extractor hood 100 is relieved.
  • the synopsis of 3 and 4 shows that with a given overall height of 60 mm, for example, in the base area of the piece of furniture 400, due to the use of the Y-flat duct piece 4 and the multi-part design of the second duct section 3 that is achieved as a result, the second duct section 3 can be made much wider and thus have a larger opening cross section for the circulating air outlet 200 permitted.
  • a reducer 12 and a 90° pipe bend 7 shows the modular design of these components provided according to an embodiment of the invention.
  • the Y flat channel piece 4 and the reducer 12 can be formed in one piece.
  • a multi-part design of the Y flat duct piece 4 and the reducer 12 is particularly useful in order to be able to react flexibly to different base heights and at the same time to be able to construct the Y flat duct piece 4 as an identical part. This is due to the fact that the opening width of the flat duct connection cross section 14 of the reducer 12 precisely determines the height of the outlet cross section of the second duct section 3 .
  • the pipe bend 7 does not undergo any change in cross section.
  • the change in cross section takes place within the pipe bend 7 in the course of the 90° volume flow deflection.
  • Corresponding 90° pipe bends with changes in cross section are known from the prior art.
  • the embodiment according to 6 shows a Y-flat duct piece 4 with a reducer 12 molded onto it in one piece, the Y-flat duct piece 4 with its two air outlets 6 being connected via a reducer 12 each into a 90° pipe bend 7 (cf. figure 5 ) can result.
  • the reducer 12 opens with a first flat duct connection cross-section 13 in the Y-flat duct piece 4 and with a second flat duct connection cross-section 14 in the 90° pipe bend 7, not shown.
  • the side of the first flat duct connection cross-section 13 has a larger dimension than the shorter side of the second flat duct connection cross-section 14 in order to reduce the duct cross-section to a height dimension permitted in the base area of a piece of furniture.
  • the sum of the areas A2 of the cross sections of the air outlets 6 of the Y-flat duct piece 4 is larger than the area A1 of the cross section of the air inlet 5 of the flat duct piece 4.
  • the sum of the areas A2 of the cross sections of the air outlets 6 is preferably at least 20% larger than the area A1 of the cross section of the air inlet 5.
  • the air outlets 6 and the air inlet 5 can each have a rectangular cross section, with a height L1, L2 of the respective cross section, which runs perpendicular to a width L3, L4 of the respective cross section, being smaller than the width L3, L4 is.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
EP22163306.8A 2021-03-31 2022-03-21 Agencement de conduit plat pour une hotte aspirante à circulation descendante Pending EP4067753A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202021101741.4U DE202021101741U1 (de) 2021-03-31 2021-03-31 Flachkanalanordnung für eine Downdraft-Dunstabzugshaube

Publications (2)

Publication Number Publication Date
EP4067753A2 true EP4067753A2 (fr) 2022-10-05
EP4067753A3 EP4067753A3 (fr) 2022-11-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP22163306.8A Pending EP4067753A3 (fr) 2021-03-31 2022-03-21 Agencement de conduit plat pour une hotte aspirante à circulation descendante

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EP (1) EP4067753A3 (fr)
DE (1) DE202021101741U1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4166853A1 (fr) * 2021-05-04 2023-04-19 BSH Hausgeräte GmbH Hotte aspirante et appareil combiné
EP4187159A1 (fr) * 2021-11-24 2023-05-31 Electrolux Appliances Aktiebolag Dispositif d'extraction de fumées avec une unité à canal variable, appareil combiné comprenant un dispositif d'extraction de fumées avec une unité à canal variable, armoire de cuisine comportant un appareil combiné et procédé d'installation d'un appareil combiné dans une armoire de cuisine
IT202200008951A1 (it) 2022-05-03 2023-11-03 Bertazzoni Spa Apparecchio di cottura ad uso domestico del tipo tutto in uno.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1788259B2 (fr) 2005-11-16 2018-09-19 Naber Holding GmbH & Co. KG Coude pour une conduite de fluide
EP3401613B1 (fr) 2017-05-09 2020-09-16 Naber Holding GmbH & Co. KG Dispositif de conduit d'évacuation d'air pour un système de conduit d'évacuation d'air pour cuisine et plancher avec ledit dispositif de conduit d'évacuation d'air
DE102018113818B9 (de) 2017-07-18 2020-12-31 Naber Holding Gmbh & Co. Kg Dunstabzugssystem
DE102017109986B4 (de) 2017-05-09 2021-01-07 Naber Holding Gmbh & Co. Kg Anordnung von mehreren Sockellüftungsboxen für die Montage in einem Möbelsockel, ein Möbelsockel sowie eine entsprechende Downdraft-Dunstabzugsvorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3615476A1 (de) * 1985-05-10 1986-11-13 Friedrich 82054 Sauerlach Bürcher Uebergangsstueck fuer eine lueftungskanalinstallation
DE9103108U1 (fr) * 1991-03-14 1991-05-16 Bosch-Siemens Hausgeraete Gmbh, 8000 Muenchen, De
DE202007005757U1 (de) * 2007-04-19 2007-07-19 Biller, Rudi Vorrichtung zur Absaugung von Kochwasser über Kochstellen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1788259B2 (fr) 2005-11-16 2018-09-19 Naber Holding GmbH & Co. KG Coude pour une conduite de fluide
EP3401613B1 (fr) 2017-05-09 2020-09-16 Naber Holding GmbH & Co. KG Dispositif de conduit d'évacuation d'air pour un système de conduit d'évacuation d'air pour cuisine et plancher avec ledit dispositif de conduit d'évacuation d'air
DE102017109986B4 (de) 2017-05-09 2021-01-07 Naber Holding Gmbh & Co. Kg Anordnung von mehreren Sockellüftungsboxen für die Montage in einem Möbelsockel, ein Möbelsockel sowie eine entsprechende Downdraft-Dunstabzugsvorrichtung
DE102018113818B9 (de) 2017-07-18 2020-12-31 Naber Holding Gmbh & Co. Kg Dunstabzugssystem

Also Published As

Publication number Publication date
DE202021101741U1 (de) 2021-04-15
EP4067753A3 (fr) 2022-11-02

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