EP2840322B1 - Dispositif d'extraction pour systèmes de ventilation de cuisine - Google Patents

Dispositif d'extraction pour systèmes de ventilation de cuisine Download PDF

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Publication number
EP2840322B1
EP2840322B1 EP13181355.2A EP13181355A EP2840322B1 EP 2840322 B1 EP2840322 B1 EP 2840322B1 EP 13181355 A EP13181355 A EP 13181355A EP 2840322 B1 EP2840322 B1 EP 2840322B1
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Prior art keywords
extraction device
case
filter
filter units
filter unit
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German (de)
English (en)
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EP2840322A1 (fr
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Gino Bozzetto
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Electrolux Professional SpA
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Electrolux Professional SpA
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    • 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
    • F24C15/2035—Arrangement or mounting of filters

Definitions

  • the present invention generally relates to kitchen ventilation systems (such as ventilation ceilings or range hoods) adapted to evacuate cooking fumes resulting from cooking processes. More particularly, the present invention relates to an improved extraction device for use in such ventilation systems.
  • Ventilation systems are used for removal of cooking fumes - i.e. grease, smoke and/or odors laden air - unavoidably produced from cooking processes and combustion of cooking gas.
  • a widely practiced ventilation system (e . g ., ventilation ceiling or range hood) generally comprises an extraction device for extracting (and filtering) the cooking fumes from the kitchen environment, an exhaust duct system for exhausting air resulting from filtering of the extracted cooking fumes (hereinafter, discard air) outside the building, and one or more motorized blowers providing forced ventilation for promoting said extraction and exhaustion processes.
  • the extraction device comprises a hollow case and a filter assembly comprising a number of - e . g ., labyrinth-type - filter units exposed from side surfaces of the case.
  • the forced ventilation induced by blower causes the cooking fumes to pass through the filters units intercepting them, and the corresponding discard air within the case to be exhausted outside the building through the exhaust duct system.
  • cooking fumes may have deleterious effects on health (as well as affect gas combustion of cooking ranges), cooking fumes extraction should be as fast as possible.
  • US2003/164093 discloses a two stage air purification system provided for the removal of airborne impurities from an airflow prior to the airflow entering a building's ductwork.
  • a primary air filter is mounted within the hood of, for example, a cooking area and operable to receive grease-laden air and remove a portion of the impurities. The air is then sent to a secondary filter, also mounted within the hood, that removes additional impurities. The air is then sent through the building's ductwork and eventually out the building.
  • this is substantially due to extraction device inadequateness in terms of cooking fumes extraction flow rate - i.e., the volume of extracted cooking fumes per unit time.
  • the extraction flow rate of such an extraction device is in direct relationship to the overall filtering surface (given by number of filter units and size thereof) available for intercepting and filtering the cooking fumes, and to the cooking fumes crossing speed (i.e. , the speed at which the cooking fumes are allowed to pass through the filter units).
  • the extraction flow rate increases as filtering surface and/or crossing speed increases.
  • a low extraction flow rate may involve cooking fumes stagnation within the kitchen environment
  • an excessively high extraction flow rate may involve excessive uptake of air from the kitchen environment (i.e ., exhausted discard air to be compensated).
  • air compensation based on natural convection, this requires keeping the kitchen doors and/or windows wide opened for relatively long times (which is not a comfortable solution, especially in very hot or very cold climates), whereas in case of air compensation achieved by a dedicated compensation group of the ventilation system, this involves high costs (as an increased clean air demand implies more power consumption by the compensation group for drawing and treatment thereof).
  • Ventilators of the above-mentioned type are dimensioned to efficiently exhaust cooking fumes without stagnations, but uptake too much air from the kitchen environment ( i.e., they feature excessively high extraction flow rate).
  • lowering the extraction flow rate by discretionally decreasing the overall filtering surface e . g ., by replacing or covering one or more filter units with case portions or blind panels, respectively
  • reducing the crossing speed is not a practicable approach to solve this problem. Indeed, in both cases, the amount of cooking fumes directed towards the extraction device that would not be intercepted by the filter units and thus stagnate within the kitchen environment would drastically increase.
  • the extraction device would feature a lower interception capacity of the cooking fumes, i.e. it would intercept a lower amount of all the cooking fumes directed towards, and hitting it.
  • the cooking fumes hitting such blind panels would not be intercepted any longer upon said hitting, neither most of them would be intercepted by the filter units adjacent the blind panels ( e . g . due to unpredictable whirlwinds originating with other cooking fumes in the neighborhoods that would cause cooking fumes moving away from the extraction device), which would result in a substantially halved interception capacity.
  • the extraction device comprises a filter assembly for filtering cooking fumes from a kitchen environment, the filter assembly comprising filter units each one having, at opposite faces thereof, an input section for receiving the cooking fumes and an output section for providing discard air resulting from cooking fumes filtering.
  • the extraction device further comprises a hollow case for supporting the filter assembly, the case having on its top an output opening for allowing exhaustion of the discard air.
  • the case has on its bottom an input opening for the passage of the cooking fumes from below the extraction device.
  • the filter units are arranged in succession inside the case and along a longitudinal direction of the case, the input and output sections of each filter unit facing said input and output openings, respectively, thereby the cooking fumes passing through said input opening are intercepted and filtered by the filter units and the corresponding discard air is exhausted through the output opening.
  • each filter unit extends between a first side wall of the case and a second side wall of the case opposite said first side wall.
  • said filter units comprise at least one first filter unit arranged such that the input section thereof faces the first side wall of the case, and the output section thereof faces the second side wall of the case, and at least one second filter unit arranged such that the input section thereof faces the second side wall of the case, and the output section thereof faces the first side wall of the case.
  • the filter units are arranged in alternate succession of first filter units and second filter units, each first filter unit defining, in a view according to said longitudinal direction, a crossed arrangement with any previous and/or following second filter unit of the succession.
  • the side walls of the case comprise intake grids for allowing further passage of cooking fumes from laterally the extraction device.
  • said intake grids comprise at least one first intake grid provided at the first side wall of the case and facing a corresponding first filter unit, and at least one second intake grid provided at the second side wall of the case and facing a corresponding second filter unit.
  • each first intake grid and each second intake grid has an extent substantially defined by the orthogonal projection of the corresponding first filter unit on the first side wall and of the corresponding second filter unit on the second side wall, respectively.
  • the case comprises on its bottom a peripheral gutter member for supporting the filter units and allowing collection of condensed grease resulting from cooking smokes filtering.
  • the extraction device further comprises baffle members arranged between adjacent filter units for deflecting scattered cooking fumes towards the input sections of adjacent filter units.
  • each baffle member comprises attachment flaps each one adapted to be fixed to a corresponding filter unit.
  • the filter units comprise labyrinth filters.
  • the ventilation system comprises said at least one extraction device for extracting cooking fumes from the kitchen environment, an exhaust duct system fluidly connected to the extraction device for exhausting the discard air outside the kitchen environment, and at least one motorized blower for providing forced ventilation thereby promoting said extraction and exhaustion processes.
  • the ventilation system comprises a ventilation ceiling or a range hood.
  • the extraction device of the present invention (and the corresponding ventilation system comprising such an extraction device) features an extraction flow rate high enough to avoid cooking fumes stagnation within the kitchen environment, but not so high to draw too much air from such environment (thus possibly avoiding the high costs of a compensation group). This has been achieved by using a reduced number of filter units arranged in a optimized way so as to achieve same, or higher, interception capacity, thus resulting in a cheaper extraction device.
  • extraction flow rate will denote the volume of extracted cooking fumes per unit time, which is in direct relationship to the overall filtering surface available for intercepting and filtering the cooking fumes, and to the crossing speed.
  • the "interception capacity” will denote the capacity of the extraction device to intercept the cooking fumes directed towards and hitting it, for their extraction from the kitchen environment.
  • the interception capacity depends on the overall filtering surface with respect to the overall outer surface of the extraction device that can be hit by the cooking fumes.
  • the interception capacity provides an indication of how much of the overall outer surface of the extraction device the cooking fumes can virtually hit is occupied by filter units able to intercept (and filter) them.
  • Figure 1 schematically shows a sectional view of a part of a kitchen environment K E1 ( e.g ., a professional kitchen) known in the art.
  • the kitchen environment K E1 is provided with a ventilation system 100 for removing cooking fumes (i.e., grease, smoke and/or odors laden air) C F generated by one or more ( e.g ., two in the example at issue) electric and/or gas cooking appliances 105 ( e.g ., cooking range, oven and the like) during operation thereof.
  • a ventilation system 100 for removing cooking fumes (i.e., grease, smoke and/or odors laden air) C F generated by one or more ( e.g ., two in the example at issue) electric and/or gas cooking appliances 105 (e.g ., cooking range, oven and the like) during operation thereof.
  • the ventilation system 100 (i.e. a ventilation ceiling - as herein assumed and illustrated by way of example only - or a range hood) comprises one or more (two, in the illustrated example) extraction devices 110 (preferably arranged over one or more respective cooking appliances 105 ) for extracting and filtering the cooking fumes C F , an exhaust duct system 115 for allowing discard air from (cooking fumes extraction and filtering by) each extraction device 110 to be exhausted outside the kitchen environment K E1 , and one or more (three, in the illustrated example) motorized blowers 120 providing forced ventilation for promoting said extraction, filtering and exhaustion processes.
  • extraction devices 110 preferably arranged over one or more respective cooking appliances 105
  • an exhaust duct system 115 for allowing discard air from (cooking fumes extraction and filtering by) each extraction device 110 to be exhausted outside the kitchen environment K E1
  • motorized blowers 120 providing forced ventilation for promoting said extraction, filtering and exhaustion processes.
  • Each extraction device 110 comprises a hollow case 125, preferably wedge-shaped and made of metal, whose top wall comprises an output opening 125 OUT generally configured for allowing exhaustion of the discard air.
  • the exhaust duct system 115 comprises air exhausting pipes 128 to guide exhausted air to the outside of the kitchen environment K E1 , and joint members 130 fitted each one within the output opening 125 OUT of a corresponding extraction device 110 and fluidly connecting the extraction device 110 with the air exhausting pipes 128.
  • the case hollow of each extraction device 110 is fluidly connected with the outside of the kitchen environment K E1 through said output opening 125 OUT , the corresponding joint member 130 and the exhausting pipes 128.
  • the forced ventilation induced by blowers 120 causes the cooking fumes C F to pass through the filters units 135 i where they are intercepted, and the corresponding discard air to be exhausted outside the kitchen environment K E1 through the exhaust duct system 115.
  • the filter units 135 i are arranged side by side and on a same plane, so as to form two elongated filtering areas inclined one with respect to the other.
  • the lower part of each filter unit is held by a common central supporting member.
  • the ventilation system 100 may also comprise a compensation group generally configured for compensating the discard air by clean air thereby ensuring optimal air conditions for personnel within the kitchen environment K E1 (as well as optimal gas combustion of gas cooking appliances, if provided).
  • the compensation group comprises a further duct system 115' for drawing ambient air from outside the kitchen environment K E1 (e.g., from the external of the building or from adjacent rooms), a heating/cooling device 140 for heating up/cooling down (according to the desired temperature) the external air and feeding a temperature-adjusted clean air C A into the kitchen environment K E1 , and a further motorized blower (or more thereof) 120' for promoting such drawing, treatment and feeding operations.
  • the extraction device 110 is implicitly inadequate to feature an extraction flow rate high enough to avoid cooking fumes stagnation within the kitchen environment K E1 , but low enough to prevent excessive uptake of breathing air from the kitchen environment.
  • the extraction flow rate increases as the overall filtering surface available for intercepting and filtering the cooking fumes C F (in turn depending on number and size of filter units 135 i of each extraction device 110 ), and crossing speed (i.e., the speed at which the cooking fumes C F are allowed to pass through the filter units 135 i ) increase.
  • the extraction flow rate is of 4032 m 3 /h.
  • a suitable range of values of the extraction flow rate to avoid cooking fumes stagnation and to prevent excessive air uptake is between 2500 m 3 /h and 3500 m 3 /h, while guaranteeing an adequate crossing speed of the filter units ( i.e ., equal to, or, preferably, higher than 1 m/s).
  • Decreasing the overall filtering surface or decreasing the crossing speed are not practicable solutions for lowering the extraction flow rate, as causing a reduced interception capacity of the cooking fumes. Instead, decreasing the overall filtering surface while slightly increasing the crossing speed - for partly balancing the reduced interception capacity - may cause whirlwinds within the case 125 (and hence inefficiencies of the extraction device 110 ).
  • FIG. 2 it is schematically shown a sectional view of a part of a kitchen environment K E2 provided with a ventilation system 200 according to the principles of the present invention.
  • the ventilation system 200 differs from the ventilation system 100 for the provision of improved extraction devices 210.
  • Figure 3 schematically showing a perspective view with partly removed parts of one of such extraction devices 210 according to an embodiment of the present invention.
  • each extraction device 210 comprises a case 225 whose top 225 T has, similarly to the system of Figure 1 , an output opening 225 OUT , for exhaustion of the discard air, and whose bottom 225 B (opposite the top 225 T and directed, in use, towards the floor of the kitchen environment K E2 ) has an input opening 225 IN for passage (interception) of the cooking fumes C F .
  • the top 225 T preferably comprises a horizontal wall having, for example in its center, said output opening 125 OUT .
  • the bottom 225 B may either comprise a bottom wall having said input opening 225 IN , or may be completely opened, i.e. having no bottom wall and an input opening 225 IN substantially occupying all (or almost all) the bottom surface of the case 225, as in the example herein illustrated.
  • each filter unit 23 5 j face the input opening 225 IN and the joint member 130, respectively.
  • the filter units 23 5 j are here arranged along only one line, where they are positioned with different inclination.
  • the extraction device 210 features a lower extraction flow rate than the extraction device 110 for the same, or similar, interception capacity.
  • most of the cooking fumes coming from the cooking appliance 105 are substantially vertically attracted towards the input opening 225 IN , and hence they are intercepted and pass through the filter units 23 5 j "covering" it.
  • provision of the input opening 225 IN extending along all the longitudinal length of the extraction device 210 where most of the cooking fumes tend to be attracted, and the use of a lower number of filter units 23 5 j smartly arranged such as to "cover" the whole input opening 225 IN allow optimizing extraction flow rate without penalizing the interception capacity.
  • the longitudinal extent of the input opening 225 IN is related to the number M of filter units 235 j and their size.
  • a number M of filter units 23 5 j strictly necessary to "cover" the whole input opening 225 IN is provided - thus allowing the cooking fumes C F passing through the input opening 225 IN to be completely intercepted by the filter units 235 j .
  • the number M of filter units 23 5 j of the proposed extraction device 210 will always be lower than the number N of filter units 135 i of a conventional extraction device 110 having same or similar interception capacity.
  • the overall filtering surface for each extraction device 210 is equal to 4 x 0.4 x 0.35 m 2 .
  • the privileged cooking fumes uptake direction is vertical, so that whirlwinds within the case 225 affecting the known extraction device (and caused by violent crashing between cooking fumes passing through filter units at opposite sides of the case) are substantially avoided.
  • a slightly higher value for the crossing speed may also be set ( e.g ., 1.5 m/s) without negatively affecting interception and extraction processes.
  • the extraction device 210 will have an extraction flow rate of about 3024 m 3 /h - i.e., (4 x 0.4 x 0.35) m 2 x 1.5 m/s x 3600 s/h - which is an optimal trade-off between exhausted air and bearable costs for managing the necessary clean air.
  • the case 225 comprises a first and a second side wall 225 S1 , 225 S2 facing each other.
  • the side walls 225 S1 and 225 S2 converge towards each other in their lower part, so that the width of the upper part of case 225 is greater that the width of its lower part.
  • the side walls 225 S1 and 225 S2 are preferably concave.
  • each filter unit 23 5 j extends between the side walls 225 S1 ,225 S2 , but with alternate slanting.
  • each filter unit 23 5 j defines a crossed (or "X") arrangement, e . g . with a same cross angle ⁇ (see Figure 3 ), with any previous filter unit 235 j-1 and/or any following filter unit 235 j +1 of the succession.
  • the input section of the filter units 235 1 ,235 3 faces partly the input opening 225 IN and partly the side wall 225 S1
  • the output section of the filter units 235 2 ,235 4 faces partly the input opening 225 IN and partly the side wall 225 S2 .
  • the "X" arrangement of the filter units 235 j is aimed at further improving interception capacity and providing simplified condensed grease collection.
  • the number P and size of intake grids 350 k are not limiting features for the present invention. However in the preferred illustrated embodiment, the number P of intake grids 350 k is equal to the number M of filter units 235 j - with each intake grid 350 k that is functionally associated with a corresponding filter unit 235 j .
  • two intake grids 350 k are provided at the first side wall 225 S1 and face the (input sections of) filter units 235 1 ,235 3 , respectively
  • two further intake grids 350 k are provided at the second side wall 225 S2 and face the (input sections of) filter units 235 2 ,235 4 , respectively.
  • the intake grids 350 1 ,350 3 and the intake grids 350 2 ,350 4 have an extent substantially defined by the orthogonal projection of the filter units 235 1 ,235 3 on the first side wall 225 S1 and of the filter units 235 2 ,235 4 on the second side wall 225 S2 , respectively.
  • the cooking fumes C F entering the intake grids 350 1 -350 4 are intercepted by the input section of the filter units 235 1 -235 4 , respectively, and the corresponding discard air is exhausted through the exhaust duct system 115 as above.
  • the bottom 225 B of the case 225 also comprises a peripheral gutter member 355 for bottom supporting the filter units 235 j and draining the condensed grease dripping down by gravity from each filter unit 23 5 j towards a proper tank (not illustrated).
  • the cross angle ⁇ should be chosen by taking into account both cooking fumes interception and condensed grease collection issues.
  • the cross angle ⁇ is preferably between 20 and 90 degrees, more preferably between 40 and 80 degrees and even more preferably between 50 and 70 degrees (for example, 60 degrees, as illustrated in the figures).
  • FIG. 4A and 4B it is schematically shown a perspective view of a part of an extraction device 410 according to another embodiment of the present invention, and a close-up view thereof, respectively.
  • the extraction device 410 is substantially analogous to the extraction device 210, but differs from the latter for the provision of baffle members 455 arranged between adjacent filter units 235 j .
  • the baffle members 455 are substantially planar members arranged vertically and perpendicular to Y direction between two consecutive filter units 23 5 j to form lateral barriers for deflecting scattered cooking fumes C F towards (the input sections of) adjacent filter units (235 1 ,235 2 ,235 3 ,235 4 ).
  • the baffle members 455 therefore define longitudinal dividers to divide the hollow case 225 into longitudinal sections (or compartments), each section comprising a corresponding filter unit 235 j .
  • the baffle members 455 prevent cooking fumes C F from being directly exhausted through the exhaust duct system 115 without being filtered.
  • the baffle members 455 prevent cooking fumes C F from entering one section of the hollow case 225 through the input opening 225 IN or through the corresponding intake grid 350 k before being filtered by the filter unit 23 5 j of that section, and allow the cooking fumes C F to be laterally moved to the (adjacent) filter unit 235 j of the adjacent section.
  • each baffle member 455 comprises attachment flaps 460 adapted to be fixed to the filter units 23 5 j for providing mechanical stability.
  • any component thereof may be separated into several elements, or two or more components may be combined into a single element; in addition, each component may be replicated for supporting the execution of the corresponding operations in parallel.
  • any interaction between different components generally does not need to be continuous (unless otherwise indicated), and it may be both direct and indirect through one or more intermediaries.
  • the number of the filter units herein disclosed should not be construed limitatively, and may be chosen according to the longitudinal (or transversal) extent of the input opening which the bottom wall of the case is provided with. Analogously, without affecting the principles of the present invention, the number, shape and arrangement of the intake grids may be any, e.g. also independent from the number and shape of the filter units.
  • the filter units may be arranged within the case in any other suitable way.
  • the filter units with same orientation are all adjacent to each other. In this way, each group of filter units with same orientation still define the "X" arrangement with any previous and/or following group of filter units with different orientation in the succession.
  • each filter unit has a different orientation with respect to any previous and/or following filter unit of the succession (i.e., each pair of adjacent filter units has a respective cross angle).
  • the extraction device of above may be associated with a - e . g ., metal - known skirt or capture panel.
  • the range hood thus obtained comprises a single, compact and versatile extracting "core" - i.e., the extraction device itself; conversely, in the known range hood solutions number, shape and arrangement of the components (e.g., filter units) are specifically designed for allowing cooperation with the particular panel shape.
  • the panel may be provided with one or more baffles for deflecting the clean air being fed by the compensation group away from the range hood.
  • air depressions naturally generating upon impact of the clean air on the baffles allows deflecting of scattered cooking fumes towards the extraction device.

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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)

Claims (11)

  1. Dispositif d'extraction (210, 410) pour utilisation dans des systèmes de ventilation de cuisine (200), le dispositif d'extraction (210, 410) comprenant :
    un ensemble formant filtre (235j) pour filtrer des fumées cuisson (CF) provenant d'un environnement de cuisine (KE2) , l'ensemble formant filtre (235j) comprenant des éléments de filtrage (2351, 2352, 2353, 2354) comportant chacun, au niveau de faces opposées, une section d'entrée pour recevoir les fumées de cuisson (CF) est une section de sortie pour fournir de l'air de rejet résultant du filtrage des fumées de cuisson (CF), et
    un boîtier creux (225) pour supporter l'ensemble formant filtre (235j), le boîtier (225) comportant sur son dessus (225T) une ouverture de sortie (125OUT) pour permettre l'évacuation de l'air de rejet, dans lequel
    le boîtier (225) comporte sur son fond (225B) une ouverture d'entrée (225IN) pour le passage des fumées de cuisson (CF) provenant du dessous du dispositif d'extraction, dans lequel
    les éléments de filtrage (2351, 2352, 2353, 2354) sont agencés en succession à l'intérieur du boîtier (225) et suivant une direction longitudinale (Y) du boîtier (225), les sections d'entrée et de sortie de chaque élément de filtrage (2351, 2352, 2353, 2354) faisant face aux ouvertures d'entrée (225IN) et de sortie (125OUT), respectivement, d'où il résulte que les fumées de cuisson (CF) passant à travers l'ouverture d'entrée (225IN) sont interceptées et filtrées par les éléments de filtrage (2351, 2352, 2353, 2354) et l'air de rejet correspondant est évacué par l'intermédiaire de l'ouverture de sortie (125OUT), dans lequel
    chaque élément de filtrage (2351, 2352, 2353, 2354) s'étend entre une première paroi latérale (225S1) du boîtier (225IN) et une deuxième paroi latérale (225S2) du boîtier (225IN) opposée à la première paroi latérale (225S1), caractérisé en ce que
    les éléments de filtrage (2351, 2352, 2353, 2354) sont agencés en succession alternée de premiers (2351, 2353) et deuxièmes (2352, 2354) éléments de filtrage, les premiers éléments de filtrage (2351, 2353) définissant, dans une vue suivant la direction longitudinale (Y), un agencement croisé avec les deuxièmes éléments de filtrage (2352, 2354), de sorte que les sections d'entrée et de sortie de chaque premier élément de filtrage (2351, 2353) font aussi face aux première (225S1) et deuxième (225S2) parois latérales, respectivement, et les sections d'entrée et de sortie de chaque deuxième élément de filtrage (2352, 2354) font aussi face aux deuxième (225S2) et première (225S1) parois latérales, respectivement.
  2. Dispositif d'extraction (210, 410) selon la revendication 1, dans lequel chaque premier élément de filtrage (2351, 2353) est adjacent à au moins un deuxième élément de filtrage (2352, 2354), et dans lequel chaque premier élément de filtrage (2351, 2353) définit dans une vue suivant la direction longitudinale (Y) un agencement croisé avec un deuxième élément de filtrage précédent et/ou suivant (2352, 2354) de la succession.
  3. Dispositif d'extraction (210, 410) selon l'une quelconque des revendications 1 ou 2, dans lequel les parois latérales (225S1, 225S2) du boîtier (225) comprennent des grilles d'admission (350k) pour permettre un passage supplémentaire de fumées de cuisson (CF) à partir de la latéralité du dispositif d'extraction (210, 410).
  4. Dispositif d'extraction (210, 410) selon la revendication 3, dans lequel les grilles d'admission (350k) comprennent :
    au moins une première grille d'admission (3501, 3503) prévue au niveau de la première paroi latérale (225S1) du boîtier (225) et faisant face à un premier élément de filtrage (2351, 2353) correspondant, et
    au moins une deuxième grille d'admission (3502, 3504) prévue au niveau de la deuxième paroi latérale (225S2) du boîtier (225) et faisant face à un deuxième élément de filtrage (2352, 2354) correspondant.
  5. Dispositif d'extraction (210, 410) selon la revendication 4, dans lequel chaque première grille d'admission (3501, 3503) et chaque deuxième grille d'admission (3502, 3504) a une étendue sensiblement définie par la projection orthogonale du premier élément de filtrage (2351, 2353) correspondant sur la première paroi latérale (225S1) et du deuxième élément de filtrage (2352, 2354) correspondant sur la deuxième paroi latérale (225S2), respectivement.
  6. Dispositif d'extraction (210, 410) selon l'une quelconque des revendications précédentes, dans lequel le boîtier (225) comprend sur son fond (225B) un élément de gouttière périphérique (335) pour supporter les éléments de filtrage (2351, 2352, 2353, 2354) et permettant la collecte de graisse condensée résultant du filtrage des fumées de cuisson (CF).
  7. Dispositif d'extraction (210, 410) selon l'une quelconque des revendications précédentes, comprenant en outre des éléments de chicane (455) agencés entre des éléments de filtrage adjacents (2351, 2352, 2353, 2354) pour dévier des fumées de cuisson dispersées (CF) en direction des sections d'entrée d'éléments de filtrage (2351, 2352, 2353, 2354) adjacents.
  8. Dispositif d'extraction (210, 410) selon la revendication 7, dans lequel chaque élément de chicane (455) comprend des rabats de fixation (460) dont chacun est adapté à être fixé à un élément de filtrage (2351, 2352, 2353, 2354) correspondant.
  9. Dispositif d'extraction (210, 410) selon l'une quelconque des revendications précédentes, dans lequel les éléments de filtrage (2351, 2352, 2353, 2354) comprennent des filtres en labyrinthe.
  10. Système de ventilation (200) pour une cuisine professionnelle comprenant :
    au moins un dispositif d'extraction (210, 410) selon l'une quelconque des revendications précédentes pour extraire des fumées de cuisson (CF) de l'environnement de cuisine (KE2),
    un système de conduit d'évacuation (115) connecté en ce qui concerne les fluides au dispositif d'extraction (210, 410) pour évacuer l'air de rejet à l'extérieur de l'environnement de cuisine (KE2), et
    au moins un dispositif de soufflage motorisé (120, 120') pour assurer une ventilation forcée favorisant par cela les processus d'extraction et d'évacuation.
  11. Système de ventilation (200) selon la revendication 10, dans lequel système de ventilation (200) comprend un plafond de ventilation ou une hotte aspirante.
EP13181355.2A 2013-08-22 2013-08-22 Dispositif d'extraction pour systèmes de ventilation de cuisine Active EP2840322B1 (fr)

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CN115574356A (zh) * 2022-09-29 2023-01-06 深圳市大成厨房设备有限公司 一种装配式集成天花烟罩

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US3425334A (en) * 1967-05-03 1969-02-04 North American Rockwell Heat arresting grease extracting filter assembly
US4743280A (en) * 1986-03-24 1988-05-10 Pappas Phillip M Air filter apparatus
US5429116A (en) * 1993-06-28 1995-07-04 Brown; Stephen L. Adjustable ventilator
DE29709034U1 (de) * 1997-05-22 1997-07-31 Dillinger Stahlbau Filternder Ölnebelabscheider
DE19838648B4 (de) * 1998-07-18 2004-07-15 Sirius S.r.l Dunstabzugshauben-System
DE20023285U1 (de) * 2000-12-23 2003-07-31 Keller Lufttechnik Gmbh & Co Kg Aerosolabscheider
US6797041B2 (en) * 2002-03-01 2004-09-28 Greenheck Fan Corporation Two stage air filter
DE10311406B4 (de) * 2003-03-13 2005-08-25 Marinkovic, Petar Filteranordnung
DE102008014283B4 (de) * 2008-03-06 2021-06-10 Blanco Professional Gmbh + Co Kg Wrasenabzugsvorrichtung und eine solche umfassende Aufnahmevorrichtung für mindestens eine Speisenzubereitungseinheit
US8277530B2 (en) * 2008-09-24 2012-10-02 Ellis Fibre Usa Grease removal apparatus, systems and methods

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