EP2151632B1 - Hotte aspirante écologique et procédé pour la réduction des émissions thermiques - Google Patents

Hotte aspirante écologique et procédé pour la réduction des émissions thermiques Download PDF

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Publication number
EP2151632B1
EP2151632B1 EP09009595.1A EP09009595A EP2151632B1 EP 2151632 B1 EP2151632 B1 EP 2151632B1 EP 09009595 A EP09009595 A EP 09009595A EP 2151632 B1 EP2151632 B1 EP 2151632B1
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EP
European Patent Office
Prior art keywords
hood
internal environment
temperature
kitchen hood
aperture
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Active
Application number
EP09009595.1A
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German (de)
English (en)
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EP2151632A1 (fr
Inventor
Mario Cipriani
Stefano Socci
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Faber SpA
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Faber 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
    • F24C15/2021—Arrangement or mounting of control or safety systems

Definitions

  • the present invention relates to an ecological kitchen hood and relative method for reducing thermal energy dispersion during its exhausting operation in accordance with the introduction to the main claims.
  • Traditional kitchen hoods are known to be provided with an exhaust fan and can operate in two ways, namely: exhausting, by which the air flow drawn from the environment in which the hood is located (internal environment) is totally fed through an exhaust conduit to the outside (external environment); or filtering, by which the air flow drawn from the internal environment is conveyed through a filtering conduit towards filters (for example active carbon filters) before being returned to the internal environment.
  • exhausting by which the air flow drawn from the environment in which the hood is located (internal environment) is totally fed through an exhaust conduit to the outside (external environment); or filtering, by which the air flow drawn from the internal environment is conveyed through a filtering conduit towards filters (for example active carbon filters) before being returned to the internal environment.
  • filters for example active carbon filters
  • the choice of operation type is generally made by the user on installing the kitchen hood, by closing either the exhaust conduit or the filtering conduit for example by means of a baffle.
  • the hood is arranged for exhausting operation as this is much more efficient in eliminating odours originating from food cooking.
  • a further quantity of thermal energy has therefore to be used to return the temperature of the internal environment (Al) to comfortable values after the hood C has expelled to the external environment (AE) a quantity of odour-containing hot air originating from a coking hob P.
  • the object of the present invention is therefore to provide an ecological kitchen hood to reduce thermal energy dispersion when operating by exhaustion.
  • this shows an ecological kitchen hood 1 comprising a housing 2 in which exhaust means 3, for example a fan, are fixed.
  • the housing 2 has at least one first aperture 4 leading to the external environment AE and at least one second aperture 5 leading to the internal environment Al.
  • the hood 1 is provided with closure means 6A, 6B able to assume a first position enabling the hood 1 for filtering operation.
  • the closure means 6B can close the first aperture 4 to allow an air flow drawn from the internal environment Al by the fan 3 to be completely fed into the internal environment Al after passing through conventional filter means 7.
  • the closure means 6 can also assume a second position to enable the hood 1 for exhausting operation.
  • the closure means 6B can also leave the first aperture 4 at least partially open to enable an air flow drawn from the internal environment Al by the fan 3 to be at least partially expelled to the external environment, as shown in Figure 4 .
  • total filtering operation Figure 3 when the temperature of the external environment is very low, total filtering operation Figure 3 can be enabled, whereas when particularly efficient odour elimination is required, exhausting operation Figure 2 be enabled.
  • the closure means 6 also enable the first aperture 4 to be opened only partially such that only a portion of the indrawn flow is expelled to the external environment (AE) while a portion of the indrawn flow is returned to the internal environment (Al) after being filtered.
  • This second operating position can be used in particular to expel a more or less large flow quantity drawn from the internal environment (Al).
  • the kitchen hood 1 comprises drive means (not shown in the figures) to move said closure means 6 into the first and second operating position, and control means (not shown in the figures) connected to the drive means, to pilot the closure means 6 into one of the operating positions.
  • the kitchen hood comprises a first temperature sensor to measure the temperature of the external environment (AE), a second temperature sensor to measure the temperature of the internal environment (Al), and means for calculating the difference between the measured temperatures and comparing these temperatures (not shown in the figures).
  • AE external environment
  • Al internal environment
  • means for calculating the difference between the measured temperatures and comparing these temperatures not shown in the figures.
  • the filter means 7 are positioned downstream of the second aperture 5.
  • the filter means 7 can be easily replaced and moreover only the recycled air flow passes through the filters, hence reducing wear and extending their life.
  • the hood is enabled for filtering operation, otherwise it is enabled for exhausting operation.
  • this external environment temperature can be measured by the user, who then manually arranges for filtering operation, or by a temperature sensor connected to control means provided in the hood to enable its filtering or exhausting operation. In this manner, each time an external environment temperature less than the reference temperature is sensed by the sensor, filtering operation is enabled for the hood.
  • exhausting operation is normally enabled during summer while at least partially filtering operation is enabled during the colder periods of the year.
  • a further control can be provided for enabling filtering or exhausting operation of the described hood.
  • hood filtering operation is enabled if the temperature of the external environment AE during winter is less that that of the internal environment Al by a predetermined value.
  • this further regulating parameter enables filtering operation only when there is an internal/external temperature difference such as to introduce into the internal environment Al air which is decidedly colder than the air currently present, hence making regulation of the hood operation more accurate.
  • the hood 1 remains enabled for filtering operation for rates of flow drawn from the internal environment which are less than a predetermined value, whereas the hood is enabled for at least partially exhausting operation for rates of flow drawn from the internal environment which are greater than this predetermined value.
  • the hood 1 of the invention will provide filtering operation for low speeds of the exhaust means conventionally provided in kitchen hoods, and an at least partially exhausting operation for high speeds.
  • the filtering capacity of conventional carbon filters is insufficient such that, advantageously according to the invention, the air drawn from the internal environment for high flows can be conveyed at least partially towards the external environment such as to make the elimination of odours originating from food cooking more effective. Consequently, exhausting or at least partially exhausting operation is enabled only when a particularly effective odour elimination action is required.
  • the method and hood of the invention enables thermal energy dispersion due to exhausting operation of a kitchen hood to be minimized.
  • this at least partially exhausting operation is enabled only for particularly high air flows which would not allow sufficient filtration by the active carbon filters.

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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)
  • Superstructure Of Vehicle (AREA)

Claims (7)

  1. Hotte de cuisine (1) comprenant un boîtier (2) dans lequel des moyens d'évacuation (3) sont fixés, ledit boîtier (2) ayant au moins une première ouverture (4) conduisant vers l'environnement externe (AE) et au moins une deuxième ouverture (5) conduisant vers l'environnement interne (AI), comprenant des moyens de vanne (6) capables de prendre une première position pour une opération de filtrage dans laquelle ils ferment ladite première ouverture (4) pour permettre à une circulation d'air aspiré à partir de l'environnement interne (AI) par les moyens d'évacuation (3) d'être complètement fourni dans l'environnement interne (AI) après avoir traversé des moyens de filtrage (7), et une deuxième position pour une opération d'évacuation qui laisse ladite première ouverture (4) au moins partiellement ouverte pour permettre une circulation d'air aspiré à partir de l'environnement interne (AI) par les moyens d'évacuation (3) pour être au moins partiellement expulsé vers l'environnement externe (AE), caractérisée par le fait de comprendre un premier capteur de température destiné à mesurer la température de l'environnement externe (AE), un deuxième capteur de température destiné à mesurer la température de l'environnement interne (AI), et un moyen destiné à calculer la différence entre les températures mesurées et à comparer ces températures pour sélectionner l'une des deux positions de fonctionnement.
  2. Hotte de cuisine selon la revendication 1, caractérisée en ce que lesdits moyens de fermeture (6) comprennent deux vannes à solénoïde (6A, 6B) prévues pour bien fermer lesdites première et deuxième ouvertures (4, 5) respectivement.
  3. Hotte de cuisine selon la revendication 1, caractérisée par le fait de comprendre un moyen d'entraînement pour lesdits moyens de fermeture (6), pour amener lesdits moyens de fermeture dans les première et deuxième positions de fonctionnement, et un moyen de commande connecté audit moyen d'entraînement pour piloter les moyens de fermeture (6) dans l'une des deux positions de fonctionnement.
  4. Hotte de cuisine selon la revendication 1, caractérisée en ce que lesdits moyens de filtrage (7) sont positionnés en aval de ladite deuxième ouverture (5).
  5. Procédé de réduction de la dissipation d'énergie thermique au cours d'une opération d'évacuation d'une hotte de cuisine selon la revendication 1, dans lequel si la température de l'environnement externe est inférieure à une température de référence, ladite hotte de cuisine est activée pour une opération de filtrage, sinon ladite hotte de cuisine est activée pour une opération d'évacuation au moins partielle.
  6. Procédé selon la revendication 5, caractérisé en ce que l'opération de filtrage est activée si la température de l'environnement externe est également inférieure à celle de l'environnement interne d'une valeur prédéterminée.
  7. Procédé selon la revendication 5 ou 6, caractérisé en ce que la hotte reste activée pour une opération de filtrage pour des débits de circulation aspirés à partir de l'environnement interne qui sont inférieurs à une valeur prédéterminée, alors que la hotte est activée pour une opération d'évacuation au moins partielle pour des débits de circulation aspirés à partir de l'environnement interne qui sont supérieurs à cette valeur prédéterminée.
EP09009595.1A 2008-08-06 2009-07-24 Hotte aspirante écologique et procédé pour la réduction des émissions thermiques Active EP2151632B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT001484A ITMI20081484A1 (it) 2008-08-06 2008-08-06 Cappa ecologica da cucina e relativo metodo per ridurre la dispersione di energia termica durante il suo funzionamento aspirante

Publications (2)

Publication Number Publication Date
EP2151632A1 EP2151632A1 (fr) 2010-02-10
EP2151632B1 true EP2151632B1 (fr) 2015-11-11

Family

ID=41055308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09009595.1A Active EP2151632B1 (fr) 2008-08-06 2009-07-24 Hotte aspirante écologique et procédé pour la réduction des émissions thermiques

Country Status (3)

Country Link
EP (1) EP2151632B1 (fr)
DK (1) DK2151632T3 (fr)
IT (1) ITMI20081484A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2033133B1 (nl) 2022-09-26 2024-04-03 Bos Fornuizen B V Afzuigsamenstel voor een huishoudelijk fornuis, fornuisopstelling, en werkwijze

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011000654A1 (de) 2011-02-11 2012-08-16 Miele & Cie. Kg Dunstabzugshaube für einen Herd, eine Kochstelle oder dergleichen
EP2789921B1 (fr) * 2013-04-09 2017-04-05 Silverline Küchengeräte und Handel GmbH Hotte aspirante
WO2016020382A1 (fr) * 2014-08-08 2016-02-11 BSH Hausgeräte GmbH Module filtrant anti-odeurs, dispositif d'évacuation des fumées et procédé servant à faire fonctionner un dispositif d'évacuation des fumées
CN105674369A (zh) * 2016-03-23 2016-06-15 浙江汉丰风机有限公司 油烟净化风机一体机
CN111623387B (zh) * 2019-02-28 2021-11-02 宁波方太厨具有限公司 一种吸油烟机的电动阀流量自适应控制方法
CN111623385B (zh) * 2019-02-28 2021-11-02 宁波方太厨具有限公司 一种吸油烟机的电动阀流量自适应控制方法
CN111623389B (zh) * 2019-02-28 2021-11-12 宁波方太厨具有限公司 一种吸油烟机的电动阀流量自适应控制方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088123A (en) * 1976-06-28 1978-05-09 Rangaire Corporation Venting and recirculating vent kitchen hood
US4266528A (en) * 1978-12-13 1981-05-12 The Celotex Corporation Ducted/ductless range hood
DE3039464A1 (de) * 1980-10-18 1982-06-03 Neff - Werke, Carl Neff Gmbh, 7518 Bretten Luftreinigungsgeraet, insbesondere ueber kuechenherden o.dgl. anzubringende dunstabzugshaube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2033133B1 (nl) 2022-09-26 2024-04-03 Bos Fornuizen B V Afzuigsamenstel voor een huishoudelijk fornuis, fornuisopstelling, en werkwijze
WO2024072213A1 (fr) 2022-09-26 2024-04-04 Bos Fornuizen B.V. Ensemble extracteur pour cuisinière domestique, agencement de cuisinière et procédé

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Publication number Publication date
EP2151632A1 (fr) 2010-02-10
ITMI20081484A1 (it) 2010-02-07
DK2151632T3 (en) 2016-01-11

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