Built-under extractor device, kitchen cabinet with such a device and method for extraction of cooking vapours

Abstract

The invention relates to a built-under extractor device comprising a housing which is provided with an electrostatic precipitation filter, a plasma filter and a carbon filter, as well as to an extractor assembly comprising a stated extractor device and a discharge channel which is configured to connect an extraction opening of a hob to the entry opening of the housing. The invention further also relates to a hob and / or kitchen cabinet provided with an extractor assembly according to the invention. The invention further relates to a method for installing a built-under extractor device, the method comprising of: providing a built-under extractor device; providing a kitchen cabinet with a hob suitable and intended for built-under extraction; connecting the built-under extractor device to an underside of the kitchen cabinet; and connecting the built-under extractor device to the hob.

Description

[0001] BUILT-UNDER EXTRACTOR DEVICE, KITCHEN CABINET WITH SUCH A DEVICE AND

[0002] METHOD FOR EXTRACTION OF COOKING VAPOURS

[0003] The invention relates to a built-under extractor device, an assembly of built-under device and hob, a kitchen cabinet and / or a kitchen unit, such as a kitchen island, provided with such an extractor device and / or such an assembly, a method for extracting cooking fumes and a method for installing a hob.

[0004] In recent years extractor devices with an inlet arranged in the hob or in the same surface as the hob have also been developed in addition to the traditional extractor devices above a hob (the extractor hood). Such extraction devices are generally referred to as cooktop extractor fans. Another term used for such devices is built-under extractor device.

[0005] Built-under extractor devices have the advantage that space is saved above the hob. In addition, the extraction is realized close to the pans, which results in a more efficient extraction.

[0006] A drawback of the known cooktop extractor fans is that they take up a relatively large amount of space under the hob. In addition, such devices have been found to be insufficiently able to filter the drawn-in cooking fumes in efficient manner before recirculating them back into the building or the home. This is essential especially in cooktop extractor fans, because they always work on the basis of recirculation.

[0007] The object of the invention is to obviate or at least reduce the above stated drawbacks, and particularly to provide an improved built-under extractor device.

[0008] The invention provides for this purpose a built-under extractor device, comprising a housing which is provided with: an electrostatic precipitation filter; a plasma filter; and a carbon filter.

[0009] An advantage of the above stated built-under extractor device is that a high degree of purification is realized by application of both an electrostatic precipitation filter and a plasma filter. It is noted that an electrostatic precipitation filter is referred to with the abbreviated term ESP filter. The terms electrostatic precipitation filter and ESP filter are used alongside each other in the present application, and are deemed interchangeable.

[0010] Application of the ESP filter, which is preferably installed upstream of the plasma filter, provides for a form of triage by removing particles from the flow so that the plasma filter can neutralize the odour molecules in efficient manner. This results in an improved efficiency.

[0011] It is noted that both a kitchen cabinet and a kitchen cupboard are referred to in the application. Both terms must be understood as referring to the same object, i.e. a storage unit for a kitchen.

[0012] In an embodiment of the built-under extractor device according to the invention it can further comprise an electrostatic discharge filter. An advantage of an electrostatic discharge filter is that coarser particles can thereby be removed from the airflow to be cleaned, whereby a first cleaning step is performed in simple manner. It is otherwise noted that the electrostatic discharge filter is also referred to in this application with the term ESD filter. In the scope of this application these terms are interchangeable and are deemed synonymous.

[0013] In an embodiment of the built-under extractor device according to the invention the housing can be configured and intended to be arranged on an underside of a kitchen cupboard.

[0014] An advantage of arranging the built-under extractor device on the underside of a kitchen cabinet rather than directly under the hob is that this makes additional cabinet space available to a user.

[0015] A further advantage is that the built-under extractor device can be placed independently relative to the hob. First of all, this means that it can be applied with any hob suitable for built-under extractor devices. Additionally, this means that existing hobs suitable for built-under extractor devices can also be equipped with a built-under extractor device according to the invention.

[0016] In an embodiment of the built-under extractor device according to the invention the shape and / or the dimensions of the housing can be adapted to the dimensions of a kitchen cupboard under which the housing is to be arranged.

[0017] An advantage is that the built-under extractor device always has the right fit for a kitchen cabinet. Since kitchen cabinets or cupboards are usually supplied in a number of standard dimensions, the device is preferably adapted for one of these sizes. In other words, an extractor device which fits (exactly) under the kitchen cupboard can be made for each standard size. The shape is preferably also chosen such that the legs of the kitchen cupboard do not form (or even form part of) any impediment to installation.

[0018] In an embodiment of the built-under extractor device according to the invention the housing can be provided with connecting means for connecting the built-under extractor device to the underside of the kitchen cupboard.

[0019] The built-under extractor device is preferably embodied such that it is easily connectable to the kitchen cupboard. Connecting means suitable therefor are arranged for this purpose. It is for instance possible here to envisage screw holes, a snap system or rails connectable to the kitchen cupboard.

[0020] In an embodiment of the built-under extractor device according to the invention the housing can be provided with openings which are configured to at least partially receive adjusting legs of a kitchen cupboard.

[0021] An advantage is that the legs of the kitchen cupboard serve both as (optionally additional) connection of the extractor device to the kitchen cupboard and to support and adjust the kitchen cupboard itself. This dual function provides for an efficient use of the available (adjusting) legs.

[0022] In an embodiment of the built-under extractor device according to the invention the openings are passage openings which are configured to insert an adjusting leg of a kitchen cabinet at least partially through the opening, such that a connecting part of the adjusting leg is connectable to the kitchen cabinet. An advantage of passage openings is that the legs can be placed through the housing and into the original connection of the kitchen cupboard. This is particularly relevant in existing kitchen cupboards in which an extractor device according to the invention is retrofitted. A further advantage is that the kitchen cupboard supports directly on the legs, wherein no further forces are exerted on the housing of the extractor device.

[0023] In an embodiment of the built-under extractor device according to the invention the openings are provided with screw thread, preferably internal screw thread, and the openings are configured for screwing an adjusting legs of a kitchen cabinet into the opening.

[0024] An advantage of this embodiment is that the kitchen cupboard and the extractor device can be supplied as integral unit, wherein the extractor device has already been installed prior to delivery to an end user. Installation and / or assembly can therefore already take place in the factory. A further advantage is that the adjusting legs can be arranged in the housing of the extractor device in simple manner, this enabling a simpler and quicker installation.

[0025] In an embodiment of the built-under extractor device according to the invention the built-under extractor device, preferably the housing thereof, can be provided with adjusting legs which are configured to adjust the built-under extractor device, and preferably a kitchen cabinet connected thereto, relative to aground surface.

[0026] An advantage of this embodiment is that the built-under extractor device can be coupled and / or connected directly to a kitchen cupboard without the adjusting legs thereof having to be removed first. This reduces the installation time of the built-under extractor device according to the invention further.

[0027] In an embodiment of the built-under extractor device according to the invention the housing can comprise a fixed part and a drawer, wherein the drawer is moveable, preferably able to be slid out, relative to the fixed part.

[0028] An advantage of this embodiment is that at least a part of the built-under extractor device is easily (partially) removable. This facilitates maintenance of the built-under extractor device to considerable extent, since it is then easily accessible. A further advantage is that, if one or more components have to be replaced, this can be realized in simple manner.

[0029] In an embodiment of the built-under extractor device according to the invention the drawer of the housing can be arranged for being slid out relative to the kitchen cabinet to which or with which the housing is connected.

[0030] An advantage of this embodiment is that at least a part of the built-under extractor device is easily (partially) removable. This facilitates maintenance of the built-under extractor device to considerable extent, since it is then easily accessible. A further advantage is that, if one or more components have to be replaced, this can be realized in simple manner.

[0031] In an embodiment of the built-under extractor device according to the invention the drawer can be arranged between the legs centrally between the legs, such that it is moveable, preferably able to be slid out, between the legs. An advantage of this embodiment is that the built-under extractor device, particularly the drawer thereof, is easily accessible in installed state without the legs having to be removed and / or displaced.

[0032] In an embodiment of the built-under extractor device according to the invention the plasma filter can be arranged removably in the housing.

[0033] An advantage of a removable plasma filter is that it can be cleaned in simple manner. This improves the effectiveness and the lifespan of the plasma filter. The plasma filter is preferably provided for this purpose with a releasable connection to the housing and / or the control thereof. It is possible to envisage snap, sliding and / or magnetic connections here.

[0034] In an embodiment of the built-under extractor device according to the invention the housing can be provided with a, preferably closable, removal opening for removing the plasma filter.

[0035] An advantage of a removal opening is that the housing can be made aesthetically attractive, while the removability of the plasma filter is simultaneously guaranteed. A further advantage is that the removal opening, particularly if it takes a closable form, ensures that children and / or pets are unable, or at least less easily able, to reach the plasma filter without the removability being impeded.

[0036] In an embodiment of the built-under extractor device according to the invention the electrostatic discharge filter, the electrostatic precipitation filter, the plasma filter and the ceramic filter can be positioned one behind the other as seen in a flow direction of the air to be cleaned. In other words, it is the case that, as seen in a flow direction of the air to be cleaned, the electrostatic discharge filter is positioned upstream of the electrostatic precipitation filter and / or that the electrostatic precipitation is positioned upstream of the plasma filter and / or that the plasma filter is positioned upstream of the carbon filter.

[0037] An advantage of said positioning is that the particles and odours present in the airflow to be cleaned are removed in order from large to small. This achieves an efficient and effective cleaning and ensures that each filter is utilized efficiently and effectively, this extending the lifespan of the filters in particular.

[0038] In an embodiment of the built-under extractor device according to the invention the grease filter can be positioned upstream of the ESP filter and / or the carbon filter can be positioned upstream of the at least one fan, as seen in a flow direction of air to be cleaned.

[0039] An advantage of said position of the grease filter is that coarser particles and grease are already separated from the airflow to be cleaned prior to filtering with the ESP filter. This puts less strain on the ESP filter, and results in a longer lifespan.

[0040] An advantage of positioning the fan upstream of the carbon filter is that contamination of the fan is substantially prevented in that this contamination is captured by the carbon filter. A further advantage of this positioning is that the fan has a suctioning effect on the airflow, whereby the carbon filter can be used effectively. In an embodiment of the built-under extractor device according to the invention the housing comprises in succession, as seen in a flow direction of the air to be cleaned, the grease filter, the ESP filter and / or the ESD filter, the plasma filter, the carbon filter and the at least one fan.

[0041] An advantage of this specific configuration is that the airflow to be cleaned is cleaned on the basis of particle size in the airflow, wherein the larger particles are captured first and the finer particles are captured in the subsequent filtering steps. Owing to this order each filter is utilized efficiently and effectively, and the lifespan of the filters in particular is thereby extended.

[0042] It is particularly advantageous that the fan or fans are installed downstream of all filters, making them the least susceptible to contamination. This ensures that the airflow to be cleaned is sustained. The lifespan of the fan is also extended in this way. This positioning further also results in efficient suctioning from a hob of the airflow to be cleaned.

[0043] In an embodiment of the built-under extractor device according to the invention it can further comprise a control unit which is configured to control the built-under extractor device and is particularly configured to control one or more of the plasma filter, the ESP filter, the ESD filter and / or the fan.

[0044] An advantage of a control unit is that, depending on necessity, one or more of the above stated components can be switched on and / or off.

[0045] In an embodiment of the built-under extractor device according to the invention it can further comprise one or more sensors, including preferably one or more of an airflow sensor, an ozone sensor, a humidity sensor, a volatile organic compound (VOS or VOC) sensor and / or a sensor for measuring volatile inorganic compounds.

[0046] In an embodiment of the built-under extractor device according to the invention the carbon filter can be manufactured from a ceramic foam.

[0047] An advantage of ceramic foam is that it can withstand relatively high temperatures. A further advantage is that such foam has a long lifespan compared to traditional carbon filters.

[0048] In an embodiment of the built-under extractor device according to the invention the built-under extractor device can further comprise at least one fan, wherein the at least one fan is preferably positioned in or close to an entry opening of the hob.

[0049] An advantage of a fan is that the cooking vapour is guided toward the filters effectively.

[0050] In an embodiment of the built-under extractor device according to the invention the at least one fan can be configured to function as centrifugal filter for filtering contaminations by means of centrifugal forces.

[0051] If necessary or desirable, the at least one fan can also function as centrifugal filter, wherein any particles or objects still present in the airflow are flung against an adjacent housing wall by the fan and so are discharged.

[0052] In a further preferred embodiment of the built-under extractor device according to the invention two fans are provided. An advantage of two fans is that a higher extraction flow rate can be realized. A further advantage is that an efficient extraction can be achieved from all cooking plates or locations, particularly if the fans are placed on either side of an opening in the hob. When four cooking plates or locations are used, the fans can additionally be positioned well between the plates or locations, whereby the available space under the hob is used efficiently.

[0053] In an embodiment of the built-under extractor device according to the invention the built-under extractor device can further comprise a grease filter, wherein the grease filter is preferably positioned upstream of the fan, as seen in a flow direction.

[0054] An advantage of a grease filter is that the grease particles are removed before the airflow is guided through the different filters. (Rapid) contamination of the filters is hereby prevented, while a high degree of cleaning is simultaneously maintained. The grease filter is preferably also installed upstream of the fan (as seen in flow direction), so that contamination of the fan by grease particles can be substantially prevented.

[0055] In an embodiment of the built-under extractor device according to the invention the ESP filter can comprise at least two collectors between which a voltage difference is applied.

[0056] An advantage of using collectors is that the particles in the airflow to be removed can be captured effectively and easily. It is preferably the case that a plurality of collectors, preferably in the form of collector plates, are applied. It is the case here that the plates are alternately live and free of voltage / earthed, so that the voltage difference is realized.

[0057] In an embodiment of the built-under extractor device according to the invention the voltage difference can amount to at least 3 kV, preferably amount to at least 4 kV and more preferably amount to more than 4 kV.

[0058] It has been found that said voltage differences between the collectors bring about an efficient and effective filtering.

[0059] In an embodiment of the built-under extractor device according to the invention the ESP filter can be provided on an inlet side with a plurality of ionization elements, such as bars, wires and / or cables, wherein an electrical voltage is applied to the plurality of ionization elements.

[0060] An advantage of the ionization elements, preferably steel wires or bars, is that the particles present in the airflow are already imparted with an electric charge prior to moving between the collectors. The particles in question can hereby be captured more quickly and easily by the collectors.

[0061] In an embodiment of the built-under extractor device according to the invention the electrical voltage on the ionization elements can amount to an electrical voltage of at least 6 kV, preferably amount to at least 7 kV, more preferably amount to at least 8 kV and most preferably amount to more than 8 kV.

[0062] It has been found that said electrical voltage on the ionization elements results in an efficient and effective ionization of the particles present in the airflow. In an embodiment of the built-under extractor device according to the invention the housing can be provided with an air inlet, an air outlet and an air channel extending therebetween, wherein the air channel preferably comprises two mutually opposite bends so that the air is carried from the first side to an opposite second side. An advantage of said embodiment is that the airflow is guided through the housing and the filters arranged therein in effective manner. When bends are applied, it is the case that they have the advantage that the air is deflected and guided from air inlet to air outlet in a manner which is efficient for flow purposes.

[0063] In an embodiment of the built-under extractor device according to the invention the housing can be provided with a substantially straight air channel part which is configured such that the sides extend substantially parallel to a front and rear side of a kitchen cabinet in use of the device.

[0064] An advantage of a straight part is that a removal opening can be made therein, so that (parts of) the device are easily removable from the housing.

[0065] In an embodiment of the built-under extractor device according to the invention the housing can be provided with three or more chambers, wherein each chamber comprises a filter.

[0066] Arranging each filter in a separate chamber enables maintenance to be performed on the extractor device more easily.

[0067] In an embodiment of the built-under extractor device according to the invention the built-under extractor device comprises an air inlet which is configured to be placeable in an opening of a hob or is configured to be placeable against an opening of a hob.

[0068] The air inlet is preferably formed such that it is placeable in an opening in the hob intended for this purpose. This results in a good connection between the hob and the built-under extractor device. The built-under extractor device is preferably connected fixedly to the hob or even formed integrally therewith. This realizes an easily displaceable unit.

[0069] The air inlet can preferably also be placeable against an opening of a hob in order to enable easy (retro)fitting thereof from below. It is preferably the case that the inlet and / or the hob are then provided with seals in order to prevent air to be cleaned from leaking away through openings or gaps.

[0070] In an embodiment of the built-under extractor device according to the invention the grease filter is arranged in the air inlet or directly downstream thereof in a passage of the hob, wherein the grease filter preferably has substantially the same shape as the inlet or passage as seen in a direction transversely of the flow direction.

[0071] An advantage of arranging the grease filter in or directly under the opening is that the airflow to be cleaned is immediately cleaned of (a large part of the) grease particles present therein. A further advantage is that the grease filter is easily accessible, and even removable, in this way in order to simplify cleaning of the grease filter. The grease filter is preferably arranged removably in order to facilitate cleaning (still) further. In an embodiment of the built-under extractor device according to the invention the built-under extractor device is provided with a collecting receptacle which extends at least partially under the grease filter relative to a placing direction of the built-under extractor device under a hob.

[0072] An advantage of arranging a collecting receptacle is that, in the event that the grease filter leaks, the grease is collected in simple manner so that contamination of the other parts of the extractor device is substantially prevented.

[0073] In an embodiment of the built-under extractor device according to the invention the housing can comprise a first chamber which is in flow connection with the grease filter and the inlet and which extends at least partially under the grease filter, and preferably under the collecting receptacle, wherein the ESP filter, the plasma filter and the carbon filter are arranged in the first chamber.

[0074] An advantage of said construction is that the airflow to be cleaned can be guided through the extractor device in efficient and effective manner, while contamination by grease particles is substantially prevented. A further advantage is that the construction is compact, particularly in a plane parallel to the hob, owing to the layered placement. The extractor device can hereby be built into a hob or kitchen unit, such as a kitchen cupboard or kitchen island, better and / or more easily.

[0075] In an embodiment of the built-under extractor device according to the invention the ESP filter, the plasma filter and the carbon filter are arranged one behind the other in the first chamber, as seen in the flow direction.

[0076] An advantage of this specific configuration is that the airflow to be cleaned is cleaned on the basis of particle size in the airflow, wherein the larger particles are captured first and the finer particles are captured in the subsequent filtering steps. Owing to this order each filter is utilized efficiently and effectively, and the lifespan of the filters in particular is thereby extended.

[0077] In an embodiment of the built-under extractor device according to the invention the housing can be provided with at least one second chamber which are in flow connection with the inlet and the first chamber and, as seen in the flow direction, are positioned downstream of the first chamber, wherein the at least one fan is arranged in the at least one second chamber.

[0078] An advantage of said construction is that the airflow to be cleaned can be guided through the extractor device in efficient and effective manner, while contamination of the fans, among other things, is substantially prevented. A further advantage is that the construction is compact, particularly in a plane parallel to the hob, owing to the layered placement. The extractor device can hereby be built into a hob or kitchen unit, such as a kitchen cupboard or kitchen island, better and / or more easily.

[0079] In an embodiment of the built-under extractor device according to the invention the carbon filter forms a partition between the first and the at least one second chamber.

[0080] An advantage is that contamination of the fans is substantially prevented with this embodiment.

[0081] In an embodiment of the built-under extractor device according to the invention the housing can comprise a first chamber and a second chamber which are formed integrally, and wherein the second chamber is preferably provided with an outlet. An advantage of an integrally formed first and second chamber is that the component can be produced in relatively simple manner.

[0082] The invention further relates to an extractor device comprising: a built-under extractor device according to the invention; and a discharge channel which is configured to connect an extraction opening of a hob to the entry opening of the housing.

[0083] The extractor assembly according to the invention has the same effects and advantages as the built-under extractor device according to the invention. The embodiments stated above for the built- under extractor device according to the invention can be freely combined, alone or in combination, with the extractor assembly according to the invention.

[0084] The discharge channel of the extractor assembly according to the invention can be a rigid or fixed discharge channel or can be embodied as a (partially) flexible discharge channel. A rigid discharge channel is preferably opted for, the form and length of which are adapted to the available space in a kitchen cabinet. The form and length are preferably determined on the basis of a standard kitchen cabinet, making it easy to build in.

[0085] In an embodiment of the assembly according to the invention the extractor assembly can further comprise a fan which is arranged upstream of the entry opening of the housing, as seen in a flow direction.

[0086] An advantage of a fan is that the cooking vapour is guided toward the filters effectively.

[0087] In an embodiment of the assembly according to the invention the extractor assembly can further comprise a grease filter which is arranged upstream of the entry opening of the housing and / or is arranged upstream of the fan, as seen in a flow direction.

[0088] An advantage of a grease filter is that the grease particles are removed before the airflow is guided through the different filters. (Rapid) contamination of the filters is hereby prevented, while a high degree of cleaning is simultaneously maintained. The grease filter is preferably also installed upstream of the fan (as seen in flow direction), so that contamination of the fan by grease particles can be substantially prevented.

[0089] In an embodiment of the assembly according to the invention the fan can be configured to be arranged close to or in the extraction opening of the hob.

[0090] Owing to the vicinity of the fan to the extraction opening in the hob a high degree of suction force toward the filters of the built-under extractor device is achieved. This results in a more efficient discharge of cooking vapour in the space.

[0091] In an embodiment of the assembly according to the invention it can be arranged with a plinth which is configured, and preferably intended, to be arranged under an opening of the kitchen cabinet, wherein the plinth is preferably connected operatively to at least a part of the housing. An advantage of a plinth, particularly a plinth which corresponds substantially with the other plinths in the kitchen, is that a uniform appearance of the kitchen is achieved. In other words: the built- under extractor device is arranged in the kitchen in aesthetically attractive manner.

[0092] In an embodiment of the assembly according to the invention the plinth can be provided with a grating which is configured to be connected to an air outlet of the housing and / or it can form part of the air outlet of the housing.

[0093] The grating is preferably connected to an air outlet of the housing and / or forms the air outlet of the housing so that the air cleaned in the device can be discharged to a surrounding area, preferably a space in which the kitchen cabinet is arranged, in use of the built-under extractor device.

[0094] A grating further has the advantage that children and / or pets cannot reach into the air outlet of the built-under extractor device, whereby (further) improved safety is achieved.

[0095] In an embodiment of the assembly according to the invention the extractor assembly can further comprise a hob, wherein the hob is preferably an induction hob.

[0096] An advantage of an induction hob is that it is energy-efficient.

[0097] In an embodiment of the hob according to the invention the hob can be a gas hob.

[0098] An advantage of the assembly is that it can also be applied in an existing gas hob and / or a new design for a gas hob.

[0099] In an embodiment of the hob according to the invention the hob can be provided with drop-in cooking units and / or hotplates.

[0100] The fact that the built-under extractor device is easy to arrange and can be positioned at almost any position under the hob also enables it to be advantageously applied with existing drop-in hotplates and / or cooking units.

[0101] The invention further relates to a hob provided with an extractor assembly or with a built-under extractor device according to the invention.

[0102] The hob according to the invention has the same effects and advantages as the built-under extractor device and / or the extractor assembly according to the invention. The embodiments stated above for the built-under extractor device and / or the extractor assembly according to the invention can be freely combined, alone or in combination, with the hob according to the invention.

[0103] In an embodiment of the hob according to the invention the hob can be provided with an extraction opening to which the built-under extractor device is connectable.

[0104] An extraction opening in the hob can be provided to form the inlet of the built-under extractor device or to be connectable thereto. An inlet part of the built-under extractor device can also be placeable fittingly in the extraction opening.

[0105] In an embodiment of the hob according to the invention the hob can be an induction hob. An advantage of an induction hob is that it is energy-efficient. In an embodiment of the hob according to the invention the hob can be a gas hob. An advantage of the built-under extractor device is that it can also be applied in an existing gas hob and / or a new design for a gas hob.

[0106] In an embodiment of the hob according to the invention the hob can be provided with drop-in cooking units and / or hotplates. The fact that the built-under extractor device is easy to arrange and can be positioned at almost any position under the hob also enables it to be advantageously applied with existing drop-in hotplates and / or cooking units.

[0107] In an embodiment of the hob according to the invention the position of the extraction opening can be adapted to the position of the cooking locations, and the extraction opening can preferably be placed centrally between the cooking locations. A central position of the built-under extractor device has the advantage that cooking fumes can be extracted from all surrounding plates or units in an efficient manner. If a different configuration of the hob is applied, the position of the extractor device is preferably adapted thereto.

[0108] The invention further relates to a kitchen unit, such as a kitchen cabinet or kitchen island provided with a hob and / or a built-under extractor device and / or an extractor assembly according to the invention.

[0109] The kitchen unit, such as the kitchen cabinet according to the invention, has the same effects and advantages as the built-under extractor device, the extractor assembly and / or the hob according to the invention. The embodiments stated above for the built-under extractor device, the extractor assembly and the hob according to the invention can be freely combined, alone or in combination, with the kitchen cabinet according to the invention.

[0110] In an embodiment of the kitchen unit according to the invention the inlet of the built-under extractor device can be arranged in or in the immediate vicinity of the hob and the outlet can be arranged on the underside of the kitchen unit remote from the hob. The inlet can here be formed by the inlet or feed opening of the housing, or can be formed by (the inlet of) a discharge channel which is connected to the (entry) opening of the built-under extractor device. In other words, the built-under extractor device can arranged directly under the hob or can be arranged under the kitchen unit, wherein the entry opening is connected to the hob by means of a discharge channel arranged therebetween.

[0111] An advantage of this construction is that the cooking fumes are drawn in at a relatively short distance from the hob, whereby this takes place efficiently.

[0112] The invention further relates to a method for installing a built-under extractor device, the method comprising of: providing a built-under extractor device according to the invention; providing a kitchen cabinet with a hob suitable and intended for built-under extraction; and connecting the built-under extractor device to the hob. The method for installation according to the invention has the same effects and advantages as the built-under extractor device, the extractor assembly, the hob and / or the kitchen cabinet according to the invention. The embodiments stated above for the built-under extractor device, the extractor assembly, the hob and / or the kitchen cabinet according to the invention can be freely combined, alone or in combination, with the method for installation according to the invention.

[0113] In an embodiment of the method for installing a built-under extractor device according to the invention the method can further comprise the steps of: connecting the inlet of the built-under extractor device according to the invention to an opening in the hob; and operatively connecting an outlet of the built-under extractor device to an outlet opening for the filtered air.

[0114] In an embodiment of the method according to the invention the peripheral edge of the opening can correspond substantially with the peripheral edge of the inlet of the built-under extractor device, and the inlet can preferably be arranged fittingly in the opening.

[0115] An advantage of this embodiment is that the inlet can be substantially fittingly received in the opening in the hob in simple manner, so that a liquid-tight connection is formed. Use is preferably made here of one or more seals in order to realize the liquid-tightness of the connection (to further extent).

[0116] In an embodiment of the method according to the invention the method can further comprise of arranging an opening in the hob.

[0117] In the case that use is made of a drop-in system for realizing a hob, arranging the opening for placing the built-under extractor device can advantageously take place simultaneously with making and / or placing the openings for the hotplates / cooking plates.

[0118] In an embodiment of the method for installing a built-under extractor device according to the invention the method can further comprise the step of connecting the built-under extractor device to an underside of the kitchen cabinet.

[0119] An advantage of the method for installation according to the invention is that installation can already be performed at least partially prior to placing of the kitchen or the kitchen cabinet. This reduces installation time for the end user and enables work to be carried out more efficiently. A further advantage is that, even if installation takes place at the location of the end user, this can be performed more quickly and efficiently than with existing built-under extractor devices which are arranged under the hob.

[0120] In an embodiment of the method for installing a built-under extractor device according to the invention the step of connecting the built-under extractor device to an underside of the kitchen cabinet can comprise the steps of: releasing the adjusting legs from the kitchen cabinet; and arranging the adjusting legs in openings in the housing intended for this purpose. An advantage of the above stated embodiment is that installation and adjustment of the kitchen cabinet is simple and can be performed quickly.

[0121] In an embodiment of the method for installing a built-under extractor device according to the invention he step of connecting the built-under extractor device to the hob can comprise the step of connecting a hob discharge opening to an entry opening of the housing using a discharge channel.

[0122] An advantage is that, after connection to the kitchen cabinet, the built-under extractor device can be connected to the hob in simple manner by arranging one or more discharge channels, for instance in the form of (optionally flexible) plastic discharge pipes.

[0123] In an embodiment of the method for installing a built-under extractor device according to the invention the method can further comprise one or more of the steps of: turning over the kitchen cabinet; and adjusting the kitchen cabinet; and / or arranging and connecting a fan to a control of the built-under extractor device; and / or arranging the hob in a worktop of the kitchen cabinet.

[0124] An advantage of said embodiment is that installation can be performed in simpler and more rapid manner.

[0125] In an embodiment of the method for installing a built-under extractor device according to the invention the discharge channel can be positioned on a rear side lying opposite a drawer or door side of the kitchen cabinet, and preferably be connected thereto.

[0126] By arranging the discharge channel on the rear side it is concealed in aesthetically pleasing manner and the available space is utilized optimally.

[0127] The invention further relates to a method for extracting cooking fumes comprising of cleaning and / or purifying cooking vapour to be cleaned using a built-under extractor device according to the invention or an extractor assembly according to the invention.

[0128] The method for cleaning according to the invention has the same effects and advantages as the built-under extractor device, the extractor assembly, the hob, the kitchen cabinet and / or the method for installation according to the invention. The embodiments stated above for the built-under extractor device, the extractor assembly, the hob, the kitchen cabinet and / or the method for installation according to the invention can be freely combined, alone or in combination, with the method for installation according to the invention.

[0129] Further advantages, features and details of the invention are elucidated on the basis of preferred embodiments thereof, wherein reference is made to the accompanying drawings, in which:

[0130] Figure la and figure lb show a perspective view of an example of the device according to the invention as seen from two different angles;

[0131] Figure 2a and figure 2b show a cut-away perspective view of the example of the device of figures la and lb, as seen from two different angles;

[0132] Figure 3 shows atop view of the example of figure 2b; Figure 4 shows a rear view of an example of a kitchen cabinet provided with a built-under extractor device according to the invention;

[0133] Figure 5 shows a cross-section of an example of a kitchen cupboard provided with an extractor assembly according to the invention; and

[0134] Figure 6 shows a perspective view of an example of a built-under extractor device according to the invention;

[0135] Figure 7 shows atop view of the example of figure 6;

[0136] Figure 7a shows a cross-section of the example of figure 6;

[0137] Figure 8a shows a top view of the example of figure 6, wherein several components have been removed;

[0138] Figure 8b shows a top view of an example of a grease collecting receptacle according to the invention;

[0139] Figure 9a shows a perspective view of an example of a hob according to the invention;

[0140] Figure 9b shows a top view of the example of figure 9a;

[0141] Figure 9c shows a top view of the example of figure 9a with the grease filter removed;

[0142] Figure 10 shows a schematic overview of an example of a method for installing a built-under extractor device according to the invention; and

[0143] Figure 11 shows a schematic overview of a second example of the method according to the invention.

[0144] In an example built-under extractor device 2 is provided with housing 4. Housing 4 is provided with an air inlet 6, which is positioned on the rear side in this example, and air outlet 8, which is positioned on the front side in this example. In this example air inlet 6 is provided with a connecting channel 10 which in principle does not form part of housing 4, and therewith of built-under extractor device 2. In this example air inlet 6 and air outlet 8 are positioned at comers of housing 4 lying diagonally opposite one another. This can however also be configured differently, depending on the form of the kitchen cupboard under which the device 2 is to be arranged.

[0145] In this example housing 4 is operatively connected to plinth 12, which otherwise does not form part of built-under extractor device 2. Plinth 12 is provided with grating 14 which covers air outlet 8, so that it is not possible to reach into air outlet 8. In this example built-under extractor device 2 is further provided with adjusting legs 16. In this example adjusting legs 16 are arranged screwably in housing 2 and particularly in openings (not visible) in housing 2 arranged for this purpose. In this example adjusting legs 16 are provided with external screw thread and openings (not visible) are provided with matching internal screw thread, so that adjusting legs 16 can be adjusted.

[0146] Housing 2 (see figures 2a, 2b, 3) is provided with a flow channel 18 for the air to be cleaned, which extends between air inlet 6 and air outlet 8. A number of filters for cleaning the air to be cleaned is arranged in flow channel 18. Arranged in succession as seen in flow direction F of flow channel 18 are electrostatic precipitation filter or ESP filter 20, plasma filter 22 and carbon filter 24. Arranged between air inlet 6 and ESP filter 20 is electrostatic discharge filter or ESD filter 26.

[0147] ESD filter 26 is configured to filter coarser particles from the airflow L in flow channel 18, after which ESP filter 20 filters remaining smaller particles from the airflow by means of electrostatic charge. Plasma filter 22 is configured to neutralize odours in the airflow, after which any remaining ozone molecules are filtered out by carbon filter 24. In this example ESP filter 26 is provided with rapid coupling 28 so that ESP filter 20 can be easily uncoupled from control unit 30. In this example control unit 30 is arranged in sub-part 32 of housing 2. On a side 34 lying opposite sub-part 32 housing 2 is provided with removal opening 36, which is covered with cover 38 in this example.

[0148] Visible in more detail (see figure 3) is that ESP filter 20 comprises in this example a plurality of fins 40 or plates 40 which are positioned substantially parallel to each other. Airflow L in flow channel 18 is guided between the plates 40, wherein a voltage difference of a number of kiloVolts (kV), such as for instance 6 - 10 kV, is applied between adjacently positioned plates 40. A different voltage difference is however also possible.

[0149] Housing 4 (see figure 3) is further provided with connecting means 42 for connecting built- under extractor device 2 to a kitchen cabinet. In this example connecting means 42 are embodied as connecting openings 44 or screw holes 44 through which a screw (not shown) can be placed in order to connect built-under extractor device 2 to a kitchen cabinet. Other suitable connecting means can however also be applied.

[0150] Housing 4 has length L and width B which are adapted to the dimensions of a kitchen cabinet, so that built-under extractor device 2 can be positioned under (and connected to) a kitchen cabinet (see also figure 4).

[0151] In an example (see figure 4) kitchen cabinet 100 is provided with built-under extractor device 102. Built-under extractor device 102 is connected to kitchen cabinet 100 and is provided with adjusting legs 116 on which both built-under extractor device 102 and kitchen cabinet 100 support. Side walls 150, 152 of kitchen cabinet 100 protrude beyond rear wall 156 of kitchen cabinet 100 on the rear side 154 of kitchen cabinet 100, thus creating cavity 158. Arranged in cavity 158 is discharge channel 160 which connects the hob (not shown) to built-under extractor device 102. As is visible in figures 4 and 5, the space taken up in kitchen cabinet 100 is considerably smaller than in traditional built-under extractor devices which are arranged directly under the hob.

[0152] Kitchen cabinet 100 (see figure 5) shows housing 162, in this example having on the front side two doors 164 that cover three drawers 166, 168, 170, in more detail. Kitchen cabinet 100 is provided with hob 172 with extraction opening 174, wherein hob 172 in this example takes the form of a drop- in hob 172 which is arranged in an opening in worktop 176. Arranged under hob 172 is housing 178, in which grease filter 180 and (in this example one) fan 182 are present. Grease filter 180 is arranged upstream of fan 182, as seen in flow direction F. Housing 178 is connected to discharge channel 160 and connecting channel 110, which can otherwise also be one single channel. Discharge channel 160 and connecting channel 110 extend in cavity 158 which is situated behind rear wall 158 and are connected to air inlet 106 close to an underside of kitchen cabinet 100.

[0153] Built-under extractor device 102 is connected to bottom plate 184 of kitchen cabinet housing 162. In this example the connection is formed by screwing housing 104 fixedly onto bottom plate 184 by means of screws 186. The whole of built-under extractor device 102 and kitchen cabinet 100 can be adjusted by means of adjusting legs 116. Built-under extractor device 102 is provided on a front side with plinth 112 which covers built-under extractor device 102.

[0154] In use of kitchen cabinet 100 and built-under extractor device 102, for instance during cooking, cooking vapour is drawn in from hob 172 by fan 182. Grease particles are here captured at least partially by grease filter 180 arranged upstream of fan 182. The air is subsequently carried in flow direction F via discharge channel 160 and connecting channel 10, 110 toward air inlet 6, 106. The air is then guided through built-under extractor device 2, 102 in order to be cleaned. In built-under extractor device 2, 102 the air passes, in succession, ESD filter 26 and ESP filter 20 whereby particles are removed from the air. Odour is then cleaned from the air, which has been cleaned of almost all particles, by means of plasma filter 22, after which the air is discharged to the surrounding area via carbon filter 24 via air outlet 8 and grating 14 in plinth 12, 112.

[0155] In an example of built-under extractor device 202 (see figures 6, 7, 7a, 8a and 8b) built-under extractor device 202 is provided with a housing 203 with inlet 204, which debouches at least partially above grease collecting receptacle 206. In this example grease filter 308 is not visible, since it is arranged in the hob 300 (not shown). Grease filter 308 is however visible in the figures relating to an example of the hob according to the invention (see figures 9a, 9b). Grease filter 208 / 308 can also be arranged in housing 203, wherein it extends at least partially above grease collecting receptacle 206.

[0156] In this example grease collecting receptacle 206 (see figure 8b) extends over a predetermined length L and width B, which are chosen such that grease collecting receptacle 206 is located above other components. Grease collecting receptacle 206 is further formed such that it can be fitted in seamlessly above first chamber 210 and that a throughflow opening 212 is formed to, in this example, underlying ESP filter 214.

[0157] In this example first chamber 210 (see figure 8a) is formed such that air to be cleaned which flows in via throughflow opening 212 is carried via ESP filter 214 to plasma filter 216. In this example plasma filter 216 is partially surrounded by carbon filter 218 which is placed in a curved manner. Carbon filter 218 is formed such that it forms a partition between first chamber 210 and second chamber 220, in which fans 222 are arranged. In this specific example there are two second chambers 220, wherein each second chamber 220 is provided with a fan 222. In this example second chambers 220 are formed as integral moulded part in which fans 222 are placeable.

[0158] In use of built-under extractor device 202 air to be cleaned is drawn in from hob 300 by fans 222. The air to be cleaned here first passes grease filter 308, after which it debouches above collecting receptacle 206. The air to be cleaned flows via collecting receptacle 206, which is intended to collect any falling grease particles or drops, in flow direction S to ESP filter 214 in first chamber 210, wherein ESP filter 214 captures particles from the airflow. The air in first chamber 210 then flows further in flow direction S to plasma filter 216, where odours are neutralized, and then flows on through carbon filter 218 to second chambers 220 and fans 222. Fans 222 then ensure that the air drawn in by these fans 222, which air has then been cleaned, is also discharged via outlet 224. In this example outlet 224 is shown relatively short, although in practice it can also be longer and for instance reach to or to a position close to an underside of an item of kitchen furniture.

[0159] In an example of hob 300 (see figures 9a, 9b, 9c), hob 300 is provided with a number of, in this example four, cooking locations 326, 328, 330, 332 on which pans are placeable. In this example hob 300 is an induction hob, although other hobs are of course also possible. In this example inlet 334 of built-under extractor device 302 is arranged centrally in hob 300 and provided with inlet grating 336. Located under inlet grating 336 (see figure 9b) is grease filter 308, which extends fittingly in opening 338 (see figure 9c) in this example. Opening 338 is positioned above grease collecting receptacle 306 of built-under extractor device 302. Inlet grating 336 and grease filter 308 are preferably arranged removably so that they can easily be cleaned periodically. In an example (see figure 10) method 1000 for installing built-under extractor device 2, 102 comprises the steps of providing 1002 a built-under extractor device 2, 102 and providing 1004 a kitchen cabinet 100 with a hob 172 suitable and intended for built-under extraction. Method 1000 further comprises the steps of connecting 1006 the built-under extractor device to an underside of the kitchen cabinet and connecting 1008 the built-under extractor device to the hob.

[0160] The step of connecting 1006 the built-under extractor device to an underside of the kitchen cabinet can comprise the optional steps of releasing 1010 the adjusted legs from the kitchen cabinet and arranging 1012 the adjusted legs in openings in the housing intended for this purpose.

[0161] The step of connecting 1008 the built-under extractor device to the hob can further comprise the step of connecting 1014 a hob discharge opening to an entry opening of the housing using a discharge channel.

[0162] Method 1000 for installing a built-under extractor device can further comprise one or more of the optional steps of turning over 1018 the kitchen cabinet and / or adjusting 1016 the kitchen cabinet and / or arranging and connecting a fan 1020 to a control of the built-under extractor device and / or arranging 1022 the hob in a worktop of the kitchen cabinet.

[0163] In an example of method 2000 for installing a hob according to the invention (see figure 11) the method can comprise the steps of providing 2002 a hob, connecting 2004 the inlet of the built-under extractor device to an opening in the hob, and optionally of operatively connecting 2006 an outlet of the built-under extractor device to an outlet opening for the filtered air. Method 2000 can further optionally also comprise the step of arranging 2008 an opening in the hob, wherein step 2008 is performed prior to step 2004. If the peripheral edge of the opening corresponds substantially with the peripheral edge of the inlet of the built-under extractor device, method 2000 can also comprise the optional step of arranging 2010 the inlet fittingly in the opening.

[0164] The present invention is by no means limited to the above described preferred embodiments thereof. The rights sought are defined by the following claims, within the scope of which many modifications can be envisaged.

Claims

AMENDED CLAIMS received by the International Bureau on 25 November 2024 (25.11.2024)1. Built-under extractor device comprising a housing which is provided with: an electrostatic precipitation filter; an electrostatic discharge filter; a plasma filter; and a carbon filter.

2. Built-under extractor device according to claim 1, wherein the housing is configured to be arranged on an underside of a kitchen cupboard.

3. Built-under extractor device according to any one of the foregoing claims, wherein the shape and / or the dimensions of the housing can be adapted to the dimensions of a kitchen cupboard under which the housing is to be arranged.

4. Built-under extractor device according to any one of the foregoing claims, wherein the housing is provided with connecting means for connecting the built-under extractor device to the underside of the kitchen cupboard.

5. Built-under extractor device according to any one of the foregoing claims, wherein the housing is provided with openings which are configured to at least partially receive adjusting legs of a kitchen cupboard.

6. Built-under extractor device according to any one of the foregoing claims, wherein the housing comprises a fixed part and a drawer, wherein the drawer is moveable, preferably able to be slid out, relative to the fixed part.

7. Built-under extractor device according to any one of the foregoing claims, wherein the electrostatic precipitation filter is arranged removably in the housing.

8. Built-under extractor device according to any one of the foregoing claims, wherein the electrostatic discharge filter, the electrostatic precipitation filter, the plasma filter and the carbon filter are positioned one behind the other as seen in a flow direction of the air to be cleaned.

9. Built-under extractor device according to any one of the foregoing claims, further comprising a grease filter and / or at least one fan.

10. Built-under extractor device according to any one of the foregoing claims, further comprising a control unit which is configured to control the built-under extractor device and is particularly configured to control one or more of: the plasma filter; the ESP filter; the ESD filter; and / or the fan.

11. Extractor assembly comprising: an extractor device according to one or more of the foregoing claims; and a discharge channel which is configured to connect an extraction opening of a hob to the entry opening of the housing.

12. Extractor assembly according to claim 11, further comprising a fan which is arranged upstream of the entry opening of the housing, as seen in a flow direction.

13. Extractor assembly according to claim 11 or 12, further comprising a grease filter which is arranged upstream of the entry opening of the housing, and when dependent on claim 13, is arranged upstream of the fan, as seen in a flow direction.

14. Extractor assembly according to claim 12 or 13, wherein the fan is configured to be arranged close to or in the extraction opening of the hob.

15. Extractor assembly according to any one of the claims 11 14, further comprising a hob, wherein the hob is preferably an induction hob.

16. Hob provided with an extractor assembly according to any one of the claims 11 - 15.

17. Hob according to claim 16, wherein the hob is an induction hob.

18. Kitchen cabinet provided with a hob and an extractor device according to any one of the claims 1 - 10 and / or an extractor assembly according to any one of the claims 11 - 14.

19. Method for installing a built-under extractor device, the method comprising of: providing a built-under extractor device according to any one of the claims 1 - 10; providing a kitchen cabinet with a hob suitable and intended for built-under extraction; and connecting the built-under extractor device to the hob.

20. Method for installing a built-under extractor device according to claim 19, further comprising the step of connecting the built-under extractor device to an underside of the kitchen cabinet.

21. Method for installing a built-under extractor device according to claim 20, wherein the step of connecting the built-under extractor device to an underside of the kitchen cabinet comprises the steps of: releasing the adjusting legs from the kitchen cabinet; and arranging the adjusting legs in openings in the housing intended for this purpose.

22. Method for installing a built-under extractor device according to any one of the claims 19 -21, further comprising the steps of: connecting the inlet of the built-under extractor device according to the invention to an opening in the hob; and operatively connecting an outlet of the built-under extractor device to an outlet opening for the filtered air.

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