EP3247952B1 - Sauggitter für eine luftleitung einer haushaltsabzugshaube, luftführung mit solchem gitter und haushaltsabzugshaube mit einer solchen luftführung - Google Patents

Sauggitter für eine luftleitung einer haushaltsabzugshaube, luftführung mit solchem gitter und haushaltsabzugshaube mit einer solchen luftführung Download PDF

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Publication number
EP3247952B1
EP3247952B1 EP16709127.1A EP16709127A EP3247952B1 EP 3247952 B1 EP3247952 B1 EP 3247952B1 EP 16709127 A EP16709127 A EP 16709127A EP 3247952 B1 EP3247952 B1 EP 3247952B1
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Prior art keywords
air guide
length
spokes
port
underside
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EP16709127.1A
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English (en)
French (fr)
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EP3247952A1 (de
Inventor
Gennaro Buonomo
Sandrino ROSCINI
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Elica SpA
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Elica SpA
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/082—Grilles, registers or guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes

Definitions

  • the present invention relates to a suction grid for an air guide of a domestic hood, an air guide having such grid and a domestic hood having such air guide, as defined in the preambles of claims 1, 8 and 12 respectively.
  • a suction grid in an air guide for a domestic hood is basically provided to avoid the risk that a user may touch with his/her fingers the impeller of the ventilation unit located in the air guide, or to prevent the impeller from being broken due to the intrusion of a foreign body into the impeller, or for similar purposes.
  • suction grids include a plurality of spokes, which define openings for the passage of the air extracted, for instance, by the ventilation unit of a domestic hood.
  • the openings in the suction grid are sized in accordance with I international standards such as:
  • a prior art suction grid has spokes arranged in a checkered pattern.
  • the object of the present invention is to provide a suction grid having such characteristics as to obviate the above mentioned drawbacks of the prior art.
  • this object is fulfilled by a suction grid for an air guide of a domestic hood as defined in claim 1.
  • the present invention can provide a suction grid that has lower noise levels as well as a reduced flow turbulence, thereby affording improved performances using the same ventilation unit.
  • a hood be it a filter or an extractor hood, having the air guide with the suction grid, as defined in claim 12.
  • numeral 1 designates a suction grid, particularly designed to be installed on an air guide 2, in turn located in a domestic hood, which may be either an extractor or a filter hood (not shown).
  • suction grid is intended to cover any type of device that acts as a grid or as a protection member for a motor unit for extracting gases.
  • the grid 1 defines a central area 10 and a peripheral edge 11 and comprises a first plurality of spokes 12 in mutually spaced relationship.
  • each spoke of the first plurality of spokes 12 extends along a curvilinear path 13 from the central area 10 toward the peripheral edge 11 (in the direction indicated by the arrow of the curvilinear path 13 of Figure 2A ).
  • the first plurality of spokes 12 are more closely spaced proximate to the central area 10 and become less densely spaced toward the peripheral edge 11 of the grid 1.
  • Each spoke of the first plurality of spokes 12 defines a profile 14 that is warped around the path 13.
  • warped profile is intended to designate the progressively changing angles formed by the profile section in the three dimensions along the path 13.
  • the grid 1 defines a vertical axis X-X that extends through a point C in the central area 10, such point representing the geometric center of the grid and the axis X-X being an axis for the grid itself.
  • the first plurality of spokes 12 is periodic about said axis X-X.
  • the profile 14, also referring to Figure 2A in any section normal to the path 13 (ideally) defines a parallelogram excepting the radii of curvature.
  • This parallelogram has a front side 14A, a rear side 14B, opposite to the front side 14A, an underside 14C and a topside 14D, opposite to the underside 14C.
  • the ratio of the front side 14A or the rear side 14B to the underside 14C or the topside 14D changes from the central area 10 toward the peripheral edge.
  • the ratio of the front side 14A or the rear side 14B to the underside 14C or the topside 14D at a given point of the path 13 is not the same as the ratio that is found at a point that precedes or follows the point being considered.
  • the front side 14A and the rear side 14B of the profile 14 are shown to be constant and equal to "a" in all the sections normal to the path 13, whereas the underside 14C and the topside 14D increase from the center 10 toward the peripheral edge 11, from the length "b 1 " to the length "b n ".
  • the a to b ratio for each spoke of the first plurality of spokes 12 is not constant throughout the path 13, but decreases in the direction from the central area 10 to the peripheral edge 11 of the grid 1, which means that the ratio of the front side 14A or the rear side 14B to the underside 14C or the topside 14D proximate to the central area 10, e.g. a/b 1 , is greater than the ratio of the front side 14A or the rear side 14B to the underside 14C or the topside 14D proximate to the peripheral edge, e.g. a/b n .
  • the grid 1 comprises a plurality of rings 20, which are preferably coaxial with the axis X-X.
  • each ring of the plurality of rings 20 is connected to the front side 14A of each spoke of the first plurality of spokes 12.
  • the plurality of rings 20 comprises at least three rings, each having a diameter value D that increases from the center C toward the peripheral edge 11.
  • the grid 1 comprises a second plurality of mutually spaced spokes.
  • each spoke of the second plurality of spokes 30 extends along a curvilinear path 31 from one of the aforementioned rings 20 toward the peripheral edge 11 (in the direction indicated by the arrow of the curvilinear path 13 of Figure 2A ).
  • the second plurality of spokes 30 are more closely spaced proximate to the central area 10 and become less densely spaced toward the peripheral edge 11 of the grid 1.
  • the second plurality of spokes 30 is also periodic about said axis X-X.
  • each spoke of the second plurality of spokes 30 is interposed between two spokes of said first plurality of spokes 12.
  • the path 31 along which each spoke of the second plurality of spokes 30 extends is substantially similar in its form to the path 13 along which each spoke of the first plurality of spokes 12 extends.
  • each spoke of the second plurality of spokes 30 defines a profile 32 that is warped around the path 31.
  • the profile 32 also referring to Figure 2B , in any section normal to the path 31 (ideally) defines a parallelogram excepting the radii of curvature.
  • This parallelogram has a front side 32A, a rear side 32B, opposite to the front side 32A, an underside 32C and a topside 32D, opposite to the underside 32C.
  • the ratio of the front side 32A or the rear side 32B to the underside 32C or the topside 32D changes from one of the aforementioned rings 20 toward the peripheral edge 11.
  • the ratio of the front side 32A or the rear side 32B to the underside 32C or the topside 32D at a given point of the path 31 is not the same as the ratio that is found at a point that precedes or follows the point being considered.
  • the front side 32A and the rear side 32B of the profile 14 are shown to be constant and equal to "c" in all the sections normal to the path 31, whereas the underside 32C and the topside 32D increase from the center 10 toward the peripheral edge 11, from the length "b1" to the length "bn".
  • the c to b ratio for each spoke of the second plurality of spokes 30 is not constant throughout the path 31, but decreases in the direction from the central area 10 to the peripheral edge 11 of the grid 1, which means that the ratio of the front side 32A or the rear side 32B to the underside 32C or the topside 32D proximate to the central area 10, e.g. c/b 1 , is greater than the ratio of the front side 32A or the rear side 32B to the underside 32C or the topside 32D proximate to the peripheral edge, e.g. c/b n .
  • each spoke of the first or second plurality of spokes 12, 30 has:
  • a suction grid 1 Due to the conformation of the first plurality of spokes 12 a suction grid 1 is obtained, that has lower noise levels as well as a reduced flow turbulence, thereby affording improved performances using the same ventilation unit.
  • the conformation of the first and second pluralities of spokes 12, 30 can define openings that comply with the aforementioned applicable standards, ensuring user safety during normal operation of the grid.
  • the air guide 2 has an axis of rotation R about which a housing 40 is defined, which has a first axial suction port 41 and a second axial suction port 42 opposite to the first suction port 41 and a tangential outlet port 43.
  • the air guide 2 comprises a drive unit 44B composed of an electric motor 44 and an impeller 45 connected with a drive shaft 44A of the electric motor 44, both located within the housing 40 that acts as an air guide.
  • the housing 40 has a substantially toroidal shape with two side walls 46, 47 delimiting the suction ports 41, 42, and a peripheral wall 48 (known as volute), which forms a substantially tangential portion defining the port 43.
  • the housing 40 is composed of two half-shells 49, 50, which are connected together along a junction line 52 in the peripheral wall 48 by complementary junction edges 52 having a step-like cross section, to thereby form a labyrinth connection interface, and a plurality of alignment pins 53 projecting out of the junction edge 52 of one of the half-shells 49, 50 respectively, and received in corresponding alignment holes 54 formed in the junction edge 52 of the other half-shell.
  • the suction ports 41, 42 have a circular shape and are coaxial with the impeller 45 (which also has a circular shape) and the inside diameter D1 of the edge of the suction port 41, 42 (not considering the support portions) is smaller than the inside diameter D2 of the end of the impeller that faces it.
  • the first and second suction ports 41, 42 have the same axis of rotation R-R (see Figure 3B ) which is also their axis of symmetry and coincides with the axis X-X of the grid 1.
  • the tangential port 42 has its own plane of symmetry P (see Figure 3C ) perpendicular to the axis of symmetry R of the first and second axial ports 41, 42.
  • the axis of rotation (or symmetry) R-R and the plane of symmetry P define a center C' at their intersection.
  • the two half-shells 49, 50 of the housing 40, which compose the air guide 2 are not symmetrical, which means that they are dissymmetrical.
  • the electric motor 44 is at least partially offset from such center C' toward the second port 42.
  • the dissymmetry of the two half-shells 49, 50 of the air guide is defined considering the plane of symmetry P (see Figure 3C ) of the tangential port 43, which is orthogonal to the axis of symmetry R-R of the first and second axial ports 41, 42.
  • the distance between the sidewall 46 and this plane of symmetry P is typically equal to the distance between the sidewall 47 and the plane P in prior art air guides.
  • the distance L1 of the sidewall 47 i.e, the sidewall opposite to the first port 41, is greater than the distance L2 between the sidewall 46, i.e. the sidewall opposite to the second port 42 and the plane of symmetry P.
  • the distance of the sidewall 47 that delimits the second axial port 42 of the air guide 2 is greater than the distance between the sidewall 46, that delimits the first axial port 41 of the air guide 2, and the plane of symmetry P of the tangential port 43, which extends through the plane of symmetry P and is orthogonal to the axis of symmetry R-R of the first and second axial ports 41, 42.
  • the motor 44 will be located to a to a greater distance outside the impeller 45 than it would normally be, whereby the electric motor 44 will be at least partially offset from such center C' toward the second port 42.
  • the electric motor 44 extends at least partially beyond the predetermined length L of the impeller 45 (when considered along a direction of extension between the first port 41 and the second port 42) toward the second port 42.
  • the air guide 2 can be advantageously mounted to a domestic hood.
  • hood comprises a housing frame in which the air guide 2 is accommodated for extracting and exhausting gases, e.g. during food preparation.
  • the housing frame of the hood comprises a gas extraction inlet and an outlet, through which the extracted gases are exhausted, with or without filtering.
  • the air guide 2 is configured to be in fluid communication with the inlet and the outlet of the hood frame, for extraction and exhaustion of gases.
  • the Applicant made specific tests on the suction grid 1 installed on the air conveyor 2, as compared with a standard air conveyor having a standard grid, within the same hood.
  • the following table shows the values obtained from the tests.
  • the table proves that the use of the suction grid 1 with the air guide 2 of the present invention affords remarkable improvements in fluid-dynamic efficiency, i.e. from 26% to 37%, and a reduction of noise from 69 dBA to 67 dBA.
  • the area of the tangential outlet edge 43 designated as a circumference 60, has a variable section, a somewhat converging conduit being so formed between the impeller 45 and the peripheral wall 48.
  • This variable section has the purpose of reducing the perturbations induced by the presence of the outlet edge 43 on the flow, to maintain a low noise level.
  • the involute surface of the peripheral wall 48 is always parallel to the blades of the impeller 45. With this arrangement, the airflow extracted through the suction grid may be maintained as laminar as possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ventilation (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (12)

  1. Ansauggitter (1) für eine Luftführung (2) einer Haushaltsabzugshaube, umfassend eine erste Mehrzahl von voneinander beabstandeten Stäben (12), wobei das Gitter einen zentralen Bereich (10) und einen Umfangsrand (11) definiert, wobei jeder Stab der ersten Mehrzahl von Stäben (12) sich entlang einer ersten gekrümmten Bahn (13) von dem zentralen Bereich (10) zum Umfangsrand (11) erstreckt, wobei jeder Stab der ersten Mehrzahl von Stäben (12) ein Profil (14) definiert, das um die erste gekrümmte Bahn (13) verdreht ist, wobei das Profil (14) in jedem Schnitt senkrecht zu der ersten gekrümmten Bahn (13) eine Vorderseite (14A), eine der Vorderseite (14A) gegenüberliegende Rückseite (14B), eine Unterseite (14C) und eine der Unterseite (14C) gegenüberliegende Oberseite (14D) definiert, wobei sich das Verhältnis der Vorderseite (14A) oder der Rückseite (14B) zu der Unterseite (14C) oder der Oberseite (14D) von dem zentralen Bereich (10) zum Umfangsrand (11) hin ändert,
    wobei das Verhältnis von dem zentralen Bereich (10) zum Umfangsrand (11) hin abnimmt,
    dadurch gekennzeichnet, dass
    - die Vorderseite (14A) eine Ausdehnungsrichtung aufweist, die parallel zu der Ausdehnungsrichtung der Rückseite (14B) ist, wobei die Länge der Vorderseite (14A) gleich der Länge der Rückseite (14B) ist und die Länge entlang der ersten gekrümmten Bahn (13) gleich bleibt;
    - die Unterseite (14C) eine Ausdehnungsrichtung parallel zu der Ausdehnungsrichtung der Oberseite (14D) aufweist, wobei die Länge der Unterseite (14C) gleich der Länge der Oberseite (14D) ist und die Länge entlang der ersten gekrümmten Bahn (13) progressiv zunimmt.
  2. Ansauggitter für eine Luftführung einer Haushaltsabzugshaube nach Anspruch 1, wobei das Ansauggitter (1) eine Achse (X-X) definiert und eine Mehrzahl von Ringen (20) umfasst, die koaxial mit der Achse (X-X) sind, wobei jeder Ring der Mehrzahl von Ringen (20) mit der Vorderseite (14A) eines jeden Stabs der Mehrzahl von Stäben (12) verbunden ist.
  3. Ansauggitter für eine Luftführung einer Haushaltsabzugshaube nach Anspruch 2, wobei die Mehrzahl von Ringen (20) wenigstens drei Ringe umfasst, die jeweils einen Durchmesser (D) aufweisen, der von dem Zentrum (C) zum Umfangsrand (11) hin zunimmt.
  4. Ansauggitter für eine Luftführung einer Haushaltsabzugshaube nach Anspruch 2, umfassend eine zweite Mehrzahl von voneinander beabstandeten Stäben (30), wobei jeder Stab der zweiten Mehrzahl von Stäben (30) sich entlang eines zweiten gekrümmten Bahn (31) von einem der Ringe (20) zum Umfangsrand (11) hin erstreckt, wobei jeder Stab der zweiten Mehrzahl von Stäben (30) ein Profil (32) definiert, das um die zweite gekrümmte Bahn (31) verdreht ist, wobei das Profil (32), das in jedem Schnitt senkrecht zu der zweiten gekrümmten Bahn (31) ist, eine Vorderseite (32A), eine der Vorderseite (32A) gegenüberliegende Rückseite (32B), eine Unterseite (32C) und eine der Unterseite (32C) gegenüberliegende Hinterseite (32D) definiert, wobei das Verhältnis der Vorderseite (32A) oder der Rückseite (32B) zu der Unterseite (32C) oder der Hinterseite (32D) sich von einem der Ringe (20) zum Umfangsrand (11) hin ändert.
  5. Ansauggitter für eine Luftführung einer Haushaltsabzugshaube nach Anspruch 4, wobei das Verhältnis von einem der Ringe (20) zum Umfangsrand (11) hin abnimmt.
  6. Ansauggitter für eine Luftführung einer Haushaltsabzugshaube nach Anspruch 5, wobei:
    - die Vorderseite (32A) eine Ausdehnungsrichtung aufweist, die parallel zu der Ausdehnungsrichtung der Rückseite (32B) ist, wobei die Länge der Vorderseite (32A) gleich der Länge der Rückseite (32B) ist und die Länge entlang der zweiten gekrümmten Bahn (31) gleich bleibt;
    - die Unterseite (32C) eine Ausdehnungsrichtung parallel zu der Ausdehnungsrichtung der Oberseite (32D) hat, wobei die Länge der Unterseite (32C) gleich der Länge der Oberseite (32D) ist und die Länge entlang der zweiten gekrümmten Bahn (31) progressiv zunimmt.
  7. Ansauggitter für eine Luftführung einer Haushaltsabzugshaube nach Anspruch 4, wobei jeder Stab der zweiten Mehrzahl von Stäben (30) zwischen zwei Stäben der ersten Mehrzahl von Stäben (12) eingesetzt ist.
  8. Luftführung einer Haushaltsabzugshaube mit einer Drehachse (R-R) und umfassend:
    - ein Gehäuse (40) mit einer ersten axialen Ansaugöffnung (41) und einer zweiten axialen Ansaugöffnung
    (42), die der ersten Ansaugöffnung (41) gegenüberliegt, und einer tangentialen Auslassöffnung (43);
    - eine Antriebseinheit (44B), die in dem Gehäuse (40) angeordnet ist und einen Elektromotor und ein Laufrad (45) aufweist, das mit der Antriebswelle (44a) des Elektromotors (44) verbunden ist;
    - die erste Öffnung (41) umfasst eine Ansauggitter (1);
    dadurch gekennzeichnet, dass das Ansauggitter (1) wie in den vorstehenden Ansprüchen 1 bis 7 beansprucht ausgebildet ist.
  9. Luftführung einer Haushaltsabzugshaube nach Anspruch 8, wobei das Gehäuse (40) aus zwei Halbschalen (49, 50) besteht, die miteinander verbunden sind, wobei die zwei Halbschalen (49, 50) asymmetrisch sind.
  10. Luftführung einer Haushaltsabzugshaube nach Anspruch 9, wobei die erste axiale Ansaugöffnung (41) und die axiale zweite Ansaugöffnung (42) dieselbe Drehachse (R-R) aufweisen, wobei die tangentiale Öffnung (43) ihre eigene Symmetrieebene (P) senkrecht zur Drehachse (R-R) der ersten und der zweiten axialen Öffnungen (41, 42) aufweist, der Abstand (L1) der Seitenwand (47), die die zweite axiale Öffnung (42) begrenzt, ist größer als der Abstand (L2) zwischen der Seitenwand (46), die die erste axiale Öffnung (41) begrenzt, und einer Symmetrieebene (P) der tangentialen Öffnung (43), die durch die Symmetrieebene (P) hindurchgeht und orthogonal zu der Drehachse (R-R) der ersten und der zweiten axialen Öffnungen (41, 42) ist.
  11. Luftführung einer Haushaltsabzugshaube nach Anspruch 9, wobei das Laufrad (45) sich über eine vorgegebene Länge (L) entlang einer Ausdehnungsrichtung zwischen der ersten axialen Öffnung (41) und der zweiten axialen Öffnung (42) erstreckt, wobei der Elektromotor (44) sich wenigstens teilweise über die vorgegebene Länge (L) des Laufrads (45) hinaus zu der zweiten axialen Öffnung (42) erstreckt.
  12. Haushaltsabzugshaube, umfassend einen Aufnahmerahmen mit einem Einlass und einem Auslass, wobei eine Luftführung (2) in dem Aufhahmerahmen untergebracht ist, wobei die Luftführung (2) zum Ansaugen und Abführen von Gasen in fluidischer Verbindung mit dem Einlass und dem Auslass steht, dadurch gekennzeichnet, dass die Luftführung (2) wie in den vorstehenden Ansprüchen 8 bis 11 beansprucht ausgebildet ist.
EP16709127.1A 2015-01-22 2016-01-20 Sauggitter für eine luftleitung einer haushaltsabzugshaube, luftführung mit solchem gitter und haushaltsabzugshaube mit einer solchen luftführung Active EP3247952B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16709127T PL3247952T3 (pl) 2015-01-22 2016-01-20 Kratka wyciągowa do elementu prowadzącego powietrze okapu domowego, element prowadzący powietrze mający taką kratkę i okap domowy mający taki element prowadzący powietrze

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20150058 2015-01-22
PCT/IB2016/050269 WO2016116871A1 (en) 2015-01-22 2016-01-20 Suction grid for an air guide of a domestic hood, air guide having such grid and domestic hood having such air guide.

Publications (2)

Publication Number Publication Date
EP3247952A1 EP3247952A1 (de) 2017-11-29
EP3247952B1 true EP3247952B1 (de) 2019-03-20

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EP (1) EP3247952B1 (de)
ES (1) ES2721779T3 (de)
PL (1) PL3247952T3 (de)
TR (1) TR201905809T4 (de)
WO (1) WO2016116871A1 (de)

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CN107191415A (zh) * 2017-05-05 2017-09-22 珠海格力电器股份有限公司 一种格栅结构及具有其的风扇
DE102018205300A1 (de) 2018-04-09 2019-10-10 Ziehl-Abegg Se Ventilator und Einströmgitter für einen Ventilator
CN108534201B (zh) * 2018-06-13 2024-03-08 广东美的厨房电器制造有限公司 整流降噪装置及吸油烟机
DE202018104101U1 (de) 2018-07-17 2018-09-10 Elica S.P.A Aerodynamisches Element für einen Luftführungsapparat einer Abzugshaube für den Hausgebrauch, mit diesem aerodynamischen Element ausgestatteter Luftführungsapparat und mit diesem Luftführungsapparat ausgestattete Abzugshaube für den Hausgebrauch
CN113490818B (zh) * 2018-12-28 2024-05-14 斯普灵格开利有限公司 通风设备用的格栅
CN112177982A (zh) * 2019-07-01 2021-01-05 青岛经济技术开发区海尔热水器有限公司 降噪风道及燃气热水器
CN110513333A (zh) * 2019-08-26 2019-11-29 格力电器（中山）小家电制造有限公司 一种出风装置保护网
DE102021129263A1 (de) * 2021-11-10 2023-05-11 Berbel Ablufttechnik Gmbh Dunstabzugshaube
DE202022101494U1 (de) * 2021-11-10 2022-11-03 Berbel Ablufttechnik Gmbh Dunstabzugshaube

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EP3247952A1 (de) 2017-11-29
ES2721779T3 (es) 2019-08-05

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