EP2619508B1 - Hotte de cuisinière et méthode de ventilation d'une cuisine - Google Patents

Hotte de cuisinière et méthode de ventilation d'une cuisine Download PDF

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Publication number
EP2619508B1
EP2619508B1 EP11767479.6A EP11767479A EP2619508B1 EP 2619508 B1 EP2619508 B1 EP 2619508B1 EP 11767479 A EP11767479 A EP 11767479A EP 2619508 B1 EP2619508 B1 EP 2619508B1
Authority
EP
European Patent Office
Prior art keywords
air
cooker hood
air inlet
inlet
hood
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.)
Active
Application number
EP11767479.6A
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German (de)
English (en)
Other versions
EP2619508A1 (fr
Inventor
Willem Andreas Pieter Van Bruggen
Erwin Cornelis Johannes Slappendel
Jan Willem Dik
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.)
Intell Properties BV
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Intell Properties BV
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Publication date
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Publication of EP2619508A1 publication Critical patent/EP2619508A1/fr
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Publication of EP2619508B1 publication Critical patent/EP2619508B1/fr
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit

Definitions

  • the invention relates to a cooker hood and a method of ventilating a room using such a cooker hood. It more specifically relates to a cooker hood connectable to a central mechanical ventilation (CMV) system.
  • CMV central mechanical ventilation
  • Cooker hoods which are connectable to a central mechanical ventilation (CMV) system are known.
  • the capacity of these cooker hoods is limited by the capacity of the CMV system.
  • so-called hybrid cooker hoods are designed, which comprise their own mechanical ventilation fan.
  • a problem with these cooker hoods may be that once the mechanical fan is activated, it produces an air flow that cannot be handled by the CMV.
  • This problem is solved by a cooker hood described in patent publication WO 2007/003757 which describes a cooker hood having a separate outlet at the top of the hood for letting out an air flow produced by the fan.
  • the air flow produces by the fan is separated from an air flow generated by a CMV. In this way, part of the exhaust air is re-circulated into the kitchen.
  • the cooker hood comprises several valves for guiding the air flows depending on the mode of operation. If the fan is off, the outlet for re-circulating air is closed and another valve is moved to open a channel to the connected CMV system. It is believed that in this mode of operation a filter present at a central region of the hood is cleaned by the less polluted air going through the filter during periods of non-cooking.
  • the disadvantage of this hood is that the mechanical valve may get polluted by grease and filth and will limit the life time of the hood considerably.
  • the filter is used to clean the air in both operating modes. This means that the filter cannot be too thick because the CMV must be able to suck air through this filter in the non-cooking situation.
  • a cooker hood for ventilating a room, the hood comprising a first and second air inlet, a first air outlet for connecting the hood to a channel of a central mechanical ventilation system, and a second air outlet for recirculation air into the room. Furthermore the hood comprises a first exhaust channel for leading air from the first air inlet to the first air outlet and a second exhaust channel for leading air from the second air inlet to the second air outlet. The second exhaust channel is separate from the first channel.
  • a fan is arranged in the second exhaust channel for creating a flow through the second exhaust channel.
  • the first and second air inlet are arranged at a bottom side of the cooker hood and the first air inlet is arranged in a mid region of the bottom side and the second air inlet is arranged at least partly around the first air inlet.
  • the cooker hood according to the invention uses two separate channels for exhausting air by means of the CMV and by exhausting air by means of the fan. In this way two air flows are generated leading to a maximal exhaust of air without an overcapacity problem and without the need of moving valves and without disturbing the CMV system.
  • an air barrier can be created which prevents air and gasses underneath the cooker hood at the mid region from escaping.
  • the first air inlet is extracting air from underneath the cooker hood, whereby an air column, defined by the barrier, is exhausted to the CMV.
  • This air column comprises relatively more grease and smoke than the air in the air barrier since it originates from pots and pans on the cooking stove which normally is aligned with the cooker hood. So the most polluted air is exhausted to the CMV which will blow the air outside. The less polluted air will be re-circulated.
  • the first inlet is a rectangular shaped inlet and the second inlet is a slot.
  • an air curtain will be created to enclose the CMV air column at least partially.
  • the slot can be U-shaped having right angles or round angles as well as being semi oval depending on the design of the bottom of the cooker hood. Other configurations are possible.
  • the first exhaust channel comprises an inlet filter arranged at the first air inlet. This filter prevents the CMV system from getting polluted with grease and moisture.
  • the second exhaust channel comprises a further inlet filter arranged at the second air inlet. This further inlet filter prevents the recirculation system from getting polluted with grease and moisture.
  • the second exhaust channel comprises an outlet filter arranged at the second air outlet.
  • the first air inlet is substantially rectangular and the second air inlet is substantially U-shaped. Using a U shaped inlet, a curtain is created which, together with a wall at the back completely surrounds the inner air column.
  • valves or way throughs between the first and second channel. Due to the absence of valves and/or way throughs, less maintenance of the cooker hood is needed saving time and money.
  • the invention also relates to a method of ventilating a room, such as a kitchen, using a cooker hood as described above.
  • FIG. 1 schematically shows a cooker hood 1 according to an embodiment of the invention.
  • the cooker hood 1 comprises a box shaped housing 2 and a u-shaped wall 3 surrounding a duct 4.
  • a first outlet 5 is shown which can be connected to a channel of a central mechanical ventilation (CMV) system, not shown.
  • CMV central mechanical ventilation
  • a second air outlet 5 is arranged in the form of a plurality of slots.
  • similar slots are present, not visible in Figure 1 .
  • FIG 2 is a schematic cross section of the cooker hood 1 of Figure 1 .
  • Figure 2 shows an inlet filter 10 through which air will be drawn into the duct 4 by the CMV. Behind the duct 4 a fan 12 is installed for re-circulating air back into the kitchen. The re-circulated air enters the hood 1 via an inlet 13. Next, it reaches an inlet filter 14. The air is then sucked by way of the fan 12 upwards into a channel compartment before it reaches an outlet filter 16. Finally it passes through the air outlet slots 7 and is re-circulated into the kitchen.
  • the recirculated air is indicated by small arrows indicating the direction of the air flow. The larger arrows indicate the air flow going via the CMV channel.
  • the cooker hood 1 comprises two separate exhaust channels; a first exhaust channel for leading air from the first air inlet 10 to the first air outlet 5, also called the CMV outlet 5, and a second exhaust channel for leading air from the second air inlet 13 to the second air outlet 7 for recirculation.
  • Figure 3 shows a cut-out view of the embodiment of Figure 1 showing the components of the cooker hood from a different perspective.
  • the inlet filters 10 and 14 may be grease filters made out of aluminium or the like.
  • the outlet filter 16 in the recirculation channel may be an odour filter comprising for example active carbon. The location of the outlet filter can differ from the location stated in the pictures.
  • FIG 4 shows a bottom view of the embodiment of Figure 1 .
  • the air inlet 10 for leading air to the CMV is arranged as a rectangular area at a central part of the bottom of the hood 1.
  • the air inlet 13 for the re-circulated air is arranged at a perimetral part of the bottom of the hood 1.
  • An arrow 20 shows the back side of the cooker hood 1 which is normally in contact with a wall.
  • the air inlet 13 is a u-shaped slot arranged along three edges of the bottom of the hood 1, i.e. the two side edges and the front edge.
  • the u-shaped slot 13 is spaced from the outer ends of the box shaped housing 2. Typical values for the distance between the outer ends and the slot 13 are between 5-20 cm. Other values are possible.
  • a slot is conceivable along all four sides of the bottom of the hood, as is shown in Figure 5 .
  • the recirculation inlet 33 is a rectangular slot in the bottom 31 which is completely surrounding the CMV air inlet 32.
  • the CMV air inlet 10 is covering approximately half of the region defined by the surrounding slot 13. It should be noted that the CMV air inlet can be as large as to cover almost the complete enclosed region, see air inlet 42 in Figure 6 .
  • reference number 43 indicates the recirculation air inlet in the bottom 41. If the CMV air inlet 10 is chosen too large, the velocity of the air through the CMV inlet may be too low. So, depending on the CMV system present, the dimensions of the CMV channel and the ventilation criteria in the kitchen, the air inlet 42 will have an optimal dimension.
  • the form of the CMV air inlet 10 does not need to be rectangular, other shapes are possible such as a filled oval.
  • the cooker hood according to the invention can be operated in two modes. If the fan 12 is off, the air is ventilated through the first channel towards the CMV. In this situation, the kitchen is ventilated via the cooker hood. The cooker hood will exhaust air and gasses coming from a cooking stove underneath the hood. If the produced gasses or smoke increases, the fan can be turned on to increase the capacity of the cooker hood. Preferably, the fan can be operated in several modes, such as low, medium, high, and as already mentioned above: "off".
  • an air barrier is created at the edges of the cooker hood 1.
  • the air barrier is indicated by small arrows indicating the direction of the air flow of the recirculated air.
  • the larger arrows indicate the air flow going via the CMV channel.
  • the air barrier itself exhausts air through the filters 14 and 16 so as to recirculate cleaned air back into the kitchen.
  • the air barrier prevents air and gasses underneath the cooker hood at the mid region from escaping. Since the CMV air inlet 10 is continuously extracting air from underneath the cooker hood, an air column defined by the barrier, is exhausted to the CMV.
  • This air column comprises relatively more grease and smoke than air in the air barrier since it originates from pots and pans on the cooking stove which normally is aligned with the cooker hood 1. So the most polluted air is exhausted to the CMV which will blow the air outside. The less polluted air will pass the filter 16 and will be re-circulated. By re-circulating the air entering the hood via the inlet 13, a significant amount of energy is saved as compared to a hood that fully exhaust directly to the outside. Furthermore, the capacity of the hood is significant more than that of a hood that fully exhausts towards a CMV system.
  • the cooker hood according to the invention comprises two separate channels which have their own mode of operation and their own function. No valves are needed for leading air flows in different ways to different channels and outlets. This will make the configuration as such more robust.
  • the system works independently of the capacity of the CMV system and the capacity of the CMV system can be fully used.

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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 (7)

  1. Hotte aspirante (1) pour la ventilation d'une pièce, la hotte (1) comprenant :
    - une première entrée d'air (10) et une seconde entrée d'air (13) ;
    - une première sortie d'air (5) pour relier la hotte à un canal d'un système de ventilation mécanique central ;
    - une seconde sortie d'air (7) pour une recirculation d'air dans la pièce ;
    - un premier canal d'échappement (4) pour amener l'air de ladite première entrée d'air (10) vers ladite première sortie d'air (5) ;
    - un second canal d'échappement pour amener l'air de ladite seconde entrée d'air (13) vers ladite seconde sortie d'air (7), ledit second canal d'échappement étant séparé dudit premier canal d'échappement (4) ;
    - un ventilateur (12) disposé dans ledit second canal d'échappement pour créer un écoulement à travers ledit second canal d'échappement,
    dans laquelle lesdites première (10) et seconde (13) entrées d'air sont disposées sur un côté inférieur de la hotte aspirante (1)
    caractérisé en ce que
    ladite première entrée d'air (10) est disposée dans une région médiane du côté inférieur et ladite seconde entrée d'air (13) est disposée au moins partiellement autour de ladite première entrée d'air (10).
  2. Hotte aspirante selon la revendication 1, dans laquelle ladite première entrée d'air (10) est une entrée de forme rectangulaire et ladite seconde entrée d'air (13) est une fente.
  3. Hotte aspirante selon l'une quelconque des revendications précédentes, dans laquelle ledit premier canal d'échappement (4) comprend un filtre d'entrée disposé au niveau de la première entrée d'air (10).
  4. Hotte aspirante selon l'une quelconque des revendications précédentes, dans laquelle ledit second canal d'échappement comprend un autre filtre d'entrée (14) disposé au niveau de la seconde entrée d'air (13).
  5. Hotte aspirante selon l'une quelconque des revendications précédentes, dans laquelle ledit second canal d'échappement comprend un filtre de sortie (16) disposé au niveau de la seconde sortie d'air (7).
  6. Hotte aspirante selon l'une quelconque des revendications précédentes, dans laquelle ladite première entrée d'air (10) est sensiblement rectangulaire et ladite seconde entrée d'air (13) est sensiblement en forme de U.
  7. Méthode de ventilation d'une pièce, telle qu'une cuisine, utilisant une hotte aspirante (1) selon l'une quelconque des revendications précédentes.
EP11767479.6A 2010-09-23 2011-09-23 Hotte de cuisinière et méthode de ventilation d'une cuisine Active EP2619508B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2005384A NL2005384C2 (en) 2010-09-23 2010-09-23 Cooker hood and method of ventilating a kitchen.
PCT/NL2011/050643 WO2012039618A1 (fr) 2010-09-23 2011-09-23 Hotte de cuisinière et méthode de ventilation d'une cuisine

Publications (2)

Publication Number Publication Date
EP2619508A1 EP2619508A1 (fr) 2013-07-31
EP2619508B1 true EP2619508B1 (fr) 2018-11-28

Family

ID=44077860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11767479.6A Active EP2619508B1 (fr) 2010-09-23 2011-09-23 Hotte de cuisinière et méthode de ventilation d'une cuisine

Country Status (3)

Country Link
EP (1) EP2619508B1 (fr)
NL (1) NL2005384C2 (fr)
WO (1) WO2012039618A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108194957A (zh) * 2018-01-28 2018-06-22 昆山富凌能源利用有限公司 一种与灶具一体设置的吸油烟机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1454643A1 (de) * 1964-06-11 1969-03-20 Siemens Elektrogeraete Gmbh Dunstabzugshaube
FR2131064A5 (fr) * 1971-03-31 1972-11-10 Coste Caumartin Ets
FR2812933B1 (fr) * 2000-08-09 2002-11-15 Aldes Aeraulique Hotte de cuisine motorisee
FR2887968B1 (fr) * 2005-07-01 2007-09-07 Aldes Aeraulique Sa Dispositif de ventilation d'une cuisine et hotte motorisee de ventilation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2619508A1 (fr) 2013-07-31
WO2012039618A1 (fr) 2012-03-29
NL2005384C2 (en) 2012-03-26

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