WO2017089925A1

WO2017089925A1 - A hood for domestic use

Info

Publication number: WO2017089925A1
Application number: PCT/IB2016/056854
Authority: WO
Inventors: Gennaro Buonomo; Marco CIMINO; Antonello Gargiulo
Original assignee: Elica S.P.A
Priority date: 2015-11-27
Filing date: 2016-11-15
Publication date: 2017-06-01
Also published as: EP3380791B1; ES2763775T3; EA201891255A1; EA033434B1; PL3380791T3; EP3380791A1; ITUB20155990A1

Abstract

The present invention relates to a hood for household environments (1) comprising a containment frame (2), a forced suction unit (5) comprising a suction section (5b) and an outlet (5d), a first opening (3) in said containment frame (2) placed in fluid communication with the outlet (5d) of said forced suction unit (5) and said outlet (5d), being arranged to be engaged by a fume discharge conduit (14), a second opening (4) in said containment frame (2) placed in fluid communication with the outlet (5d) of said forced suction unit (5) and with the environment external to the containment frame (2), at least one filter (6a, 6b) operatively placed in fluid communication with the suction section (5b) of said forced suction unit (5) and with the environment external to said containment frame (2). The feature of the hood is to comprise a first filter holder compartment (8a) designed to contain said at least one filter (6a, 6b) arranged between said outlet (5d) of said forced suction unit (5) and said fume discharge conduit (14), said first filter holder compartment (8a) comprising a closure (9) movable between a first position, in which said at least one filter (6a, 6b) is accessible to allow the removal of the at least one filter (6a, 6b) from the filter holder compartment (8a) and a second position in which said closure (9) provides a tight seal of said first filter holder compartment (8a) between said outlet (5d) of said forced suction unit (5) and said fume discharge conduit (14).

Description

Title: "A hood for domestic use".

DESCRIPTION

Technical field

The present invention relates to a suction hood for household environments, according to the preamble of claim 1.

Particularly, but not exclusively, the present invention relates to a hood integrated in a stove, commercially known as down-draft hood.

Background of the invention

Household hoods are now installed in all kitchens in homes, as their usefulness, in the suction of gases due to food preparation, is today undisputed.

Therefore, it is becoming increasingly important to have hoods for household environments that are effectively able to eliminate the fumes produced when cooking food.

Hoods have been developed for this purpose which can both suction and discharge outside the home, through a suction unit, the air sucked to filter it and then re-enter it in the house.

To that end, a fume discharge conduit is provided downstream of the forced suction unit, i.e. at the outlet thereof, which for example allows making the cooking fumes and steam sucked pass therein and discharge them, for example outside of the house.

Clearly, during filtration, the air taken must be subjected to the action of one or more filters that have the function of purifying the gases sucked.

The filters usually installed in a hood can for example be specific for filtering the grease or reducing unpleasant smells present in the gases.

Grease filters normally consist of a metal grid and are located upstream of the forced suction unit while odor filters normally consist of a filtering element comprising activated carbon and are usually arranged downstream of the suction unit and preferably within the path defined by the fume discharge conduit.

However, in the hoods currently available on the market, the filters arranged in the fume discharge conduits have a filtering efficiency lower than would their nominal value be, due to losses that occur along such a fume discharge conduit.

This is due to the fact that paths for the gases are created in known fume discharge conduits which have a lower resistance than the passage through the filters, so as to affect the filtering capacity of the gases sucked.

It should also be noted that these filters, be they grease or odor ones, require periodic maintenance to be washed, fixed or regenerated and ensure the effective functioning thereof.

These maintenance operations must be able to be carried out by the user without the intervention of specialized personnel.

However, known hoods have the need of removing or taking away panels to access the compartment where said filters are arranged.

This operation is exceedingly burdensome for odor filters since they are arranged downstream of the suction unit outlet and can therefore be reached with greater difficulty.

This problem is particularly felt in the so-called down draft hoods, in which the odor filter extraction involves the disassembly of several elements of the hood and in some cases even of parts of the kitchen cabinet which houses the hood itself.

This is due to the fact that down draft hoods are usually integrated into the hob or in the top of the kitchen cabinet.

Documents US 2014/0290641 and US 2012/0204855 describe embodiments of down-draft hoods integrated into the hob.

In this context, the technical task at the basis of the present invention is to provide a hood for household environments which allows improving the filtering performance as well as ensuring an easier maintenance of the filters, particularly of the filters arranged downstream of the forced suction unit.

In particular, the object of the present invention is to provide a hood for household environments that is more efficient in terms of filtering and that is easier to maintain.

SUMMARY OF THE INVENTION

According to the present invention, the above technical task and the specified objects are achieved by a hood for household environments according to one or more of the claims below.

Advantages

A hood for household environments can be obtained by the present invention which is more efficient from the point of view of the filtering action of the gases sucked.

The present invention allows providing a hood for household environments which exhibits great ease of maintenance.

In addition, by the present invention, in a down-draft hood it is possible to remove the filters from the same side where the elements necessary for cooking food are provided, thereby improving the hood in terms of ergonomics and allowing the use of the space below the top also for an oven or other fixed installation.

This implies that the maintenance operations should be simple so as to prevent the user from giving up maintenance for difficulty or laziness.

BRIEF DESCRIPTION OF THE DRAWINGS Further features and advantages of the present invention will become more apparent from the indicative, non-limiting description of the preferred but nonexclusive embodiments of a hood for household environments, as shown in the accompanying figures, in which:

- figure 1 shows a perspective exploded view of a first embodiment of a hood for household environments with some parts removed to better highlight others, according to the present invention;

- figure 2 shows a perspective view of a second embodiment of a hood for household environments in a first configuration, according to the present invention;

- figure 3 shows the hood in figure 2 in a second configuration;

- figure 4 shows a perspective view of the hood in figure 2 in the first configuration with some parts removed to better highlight others;

- figure 5 shows another perspective view of the hood in figure 2 in the first configuration with some parts removed to better highlight others;

figure 5 A shows a lateral sectional view along the section line V-V of the hood shown in figure 5;

figure 6 shows a perspective bottom view of the hood in figure 2;

- figures 7A and 7B show a perspective view of a portion of the hood in figure 2, in the first and second configuration, respectively, with some parts removed to better highlight others.

DETAILED DESCRIPTION

Although not explicitly mentioned, the single features described with reference to the specific embodiments shall be considered as ancillary and/or interchangeable with other features, which are described with reference to other exemplary embodiments. A hood for household environments according to the present invention is globally indicated with reference numeral 1 in the figures.

Hood 1 comprises a containment frame 2, preferably made of metal material with any decorative parts made of plastic.

By the term containment frame, in the context of the present invention, it is meant a structural element designed to contain devices adapted to the functioning of the hood (as will be better explained hereinafter) including shaped elements and/or cover panels that give the hood a particular aesthetic shape.

By way of example, the hood in figures 2 to 7B has a frame structure 2, different in shape from the one shown in figure 1.

Frame 2 of hood in figure 1, in fact, is intended to be fixed to a wall in an area of the same located above a hob having one or more burners. Such a frame is mainly adapted to be used in the so-called inverted T hoods or more generally in box and decorative hoods, that is, all those which have a compartment within which the structure is accommodated.

By contrast, frame 2 of the hood shown in figures 2 to 7B is intended to be integrated in or associated with a hob so that the functional components of the hood (including the suction unit, filters, fume discharge chimney, control elements, etc.) and of the hob (including heating means, electrical and electronic circuits, electronic control unit, etc.) may be associated with a top or a kitchen cabinet to obtain what is commonly known as concealed or down-draft hood.

For the latter type of configuration, it should be noted that hood 1 is configured to generate a cross current higher than the rising current of the cooking steam, so that such a steam is sucked towards the hob itself.

Hereinafter, in the present description, irrespective of whether it is the hood shown in Figure 1 or of the embodiment of the hood shown in Figures 2 to 7B, frame 2 comprises a first opening 3, preferably located in a top area of the frame, and at least a second opening 4, preferably located on a different portion of the containment frame 2.

Hood 1 comprises a forced suction unit 5 comprising a conveyor 5a, for example shaped as a screw, defining a suction section 5b, delimited by a grid 5 c which can be traversed by the aspirated gases, an outlet 5d in fluid communication with a fume discharge conduit 14 and a further closing grid 5e.

In order to discharge the gases produced during the preparation/cooking of food, the first opening 3 is intended to be engaged by the fume discharge conduit 14 while the second opening 4 is in fluid communication with the suction section 5b.

The forced suction unit 5 is for example a fan (axial or centrifugal) 5f, i.e. an electrical operating machine provided with an impeller able to withdraw air from a suction zone, in the vicinity of the food cooking area, and deliver it to an outlet.

It should be noted that the fan (axial or centrifugal) 5f is arranged within the volume defined by conveyor 5 a.

In particular, the first opening 3 and the second opening 4 are intended to be both in fluid communication for the discharge of the cooking fumes to the outside of the house (for example through a chimney), so as to implement a so-called suction configuration (air discharged outside the room where hood 1 is placed) or a filtering configuration (air fed back into the room properly filtered).

Hood 1 also comprises at least one filter 6a, 6b where the at least one filter 6a, 6b is operatively placed in fluid communication between the first opening 3 and the second opening 4 of frame 2 of hood 1.

In the preferred embodiment, hood 1 comprises two filters 6a and 6b, each of which has different filtering properties, and at least one filter holder compartment 8a, 8b, preferably two filter holder compartments as will be described hereinafter.

According to a preferred embodiment, hood 1 comprises two filter holder compartments 8a, 8b and two filters 6a and 6b, i.e. one compartment for each filter 6a and 6b.

In particular, filters 6a and 6b are mutually placed operatively in series with respect to an input air flow in the suction section 5b of the forced suction unit 5.

"Operatively in series" means, in the context of the present invention, the inlet air flow in the suction section 5b of the suction unit 5 first passes through filter 6a and then through filter 6b .

Preferably, hood 1 comprises two filters 6a and 6b placed operatively in series, and in particular, a grease filter 6a and an odor filter 6b operatively placed downstream of the grease filter.

The grease filter 6a is a metal grid filter.

Odor filter 6b means a filter capable of capturing and retaining the odors produced by cooking, for example by means of an active carbon filter.

In particular:

- the grease filter 6a is placed operatively upstream of the suction section 5 a and is directed towards the hob, when hood 1 is in use, as exemplified in figure 1, or it lies in a portion of the hob when hood 1 is in use, as exemplified in figures 2 to 7B;

- the odor filter 6b is operatively placed downstream of outlet 5d, i.e. downstream of the first opening 3, and is directed towards the outside, when hood 1 is in use, as exemplified in figure 1, or lies in a portion of the hob when hood 1 is in use, as exemplified in figures 2 to 7B.

In Figure 1 it is noted that the odor filter 6b is, for example, made by implementing a single filtering element while in Figures 3 and 7B, the odor filter is made by using three separate filtering elements.

It is noted that hood 1 is able to function even in the absence of one or more filters 6a, 6b.

Advantageously, hood 1 comprises a first filter holder compartment 8a arranged to hold the at least one filter 6a, 6b, preferably, the odor filter 6b.

The first filter holder compartment 8a is arranged between outlet 5d of the forced suction unit 5 and the fume discharge conduit 14.

Such a filter holder compartment 8a defines, also with reference to Figures 5 and 5A, a bottom 22 and a top 23 connected together by means of respective pairs of opposite side walls 24, 25, where top 23 defines an opening 21.

Such a filter holder compartment 8a is for example made of plastic material or, preferably, metal.

According to one aspect, hood 1 comprises a closure 9 to close opening 21 of the filter holder compartment 8a being movable between:

- a first position in which the at least one filter, such as that identified with 6b in the accompanying Figures, is accessible through such an opening 21 to allow the removal thereof from the filter holder compartment itself, and

- a second position in which the closure 9 provides a tight seal of opening 21 of the filter holder compartment 8a between outlet 5d of the forced suction unit 5 and the fume discharge conduit 14.

In this first position, closure 9 is at least partly, preferably completely, distanced from opening 21 of the first filter holder compartment 8a in such a way that filter 6a, 6b faces towards the external environment to the containment frame 2 to allow the removal of the filter itself from the filter holder compartment 8 (figure 1 and figures 7 A and 7B).

This makes it possible to extract the at least one filter 6a, 6b from the first filter holder compartment 8a so as to remove it from the same and proceed to the cleaning and/or regeneration and/or replacement of the exhausted filter, thus restoring the full functionality of hood 1.

According to one aspect, the extraction of the at least one filter 6a, 6b from the first filter holder compartment 8a is earned out manually by the user's intervention.

To this end, appropriate mechanical or magnetic aids are provided (not shown in the figures) such as, for example, an extraction band required to facilitate the extraction (and insertion) of the at least one filter 6a, 6b from/into the first filter holder compartment 8 a.

In an alternative embodiment, the mechanical or magnetic aids of the invention comprise a low- voltage electric motor (not shown) which transmits motion through a kinematic chain to the at least one filter 6a, 6b.

It is also noted that the transition from the first to the second position of closure

9 of the first filter holder compartment 8a does not require disassembly of parts of the containment frame 2, being therefore a procedure directly activated by an unskilled user.

It should also be noted that, in the second position of closure 9 (i.e. in the hermetically sealed configuration), the phenomenon of losses that take place along the fume discharge conduit 14 is prevented.

This depends on the fact that in hood 1, along the path that goes from outlet 5d of the forced suction unit 5 to the discharge of the fumes, no paths are created for the gases with lower resistance since closure 9 produces a hermetic seal for the gaseous stream passing through the first filter holder compartment 8a. This ensures that a part of the flow of gases sucked through filters 6a, 6b is dispersed into the environment surrounding hood 1 without being filtered; therefore, the reintroduction of odors caused by cooking in the room where the hood is placed is prevented.

With the solution just described, hood 1 achieves a filtration efficiency higher than conventional hoods since the entire gas flow sucked by the suction unit passes through the at least one filter 6a, 6b.

This is also achieved due to the fact that, in the second position of closure 9, a seal is formed between closure 9 and the fume discharge conduit that ensures few, if not absent, paths with lower resistance than the predetermined path for the discharge of the gases themselves.

In addition to the foregoing, hood 1 , whether the one shown with reference to Figure 1 or that shown with reference to Figures 2 to 7B, provides for the first filter holder compartment 8 to comprise an under-frame 9a configured to removably hold said filter 6b.

Such under-frame 9a is preferably made of a plastic material, i.e. a nylon polymer charged with suitable particles of glass, ceramics or other minerals in order to ensure the proper resistance to temperatures that are achieved during the transit of the gases sucked by the suction unit 5 of hood 1.

It should also be noted that the first filter holder compartment 8a is also removably constrained to the containment frame 2 of hood 1 in a first portion of the same.

In particular, as can be seen in the Figures, the first filter holder compartment 8a is accessible by a user when the hood is installed since it faces towards the side visible from the user (figure 1 and 3). According to one aspect, the first filter holder compartment 8a includes extraction members (not visible in the figures) for moving closure 9 between the first and the second position.

These extraction members comprising, for example, a user interface such as a knob 10a (figure 1) or screws 10b (figures 7A and 7B).

According to one aspect, hood 1 comprises a second filter holder compartment 8b designed to contain a further filter, such as the one identified with reference numeral 6a, in the accompanying Figures, and such a second filter holder compartment 8b is arranged between the second opening 4 of frame 2 and the suction section 5 b of the forced suction unit 5.

As can be seen in the Figures, the second filter holder compartment 8b is arranged within the containment frame 2 and, in particular, in the vicinity of opening 4 of the containment frame 2.

Such a second filter holder compartment 8b is configured to preferably accommodate the grease filter 6a while the odor filter 6b is an-anged in the first filter holder compartment 8a.

With this provision of the filter holder compartment 8a and 8b, the two filters 6a and 6b are arranged so that the gases are first filtered by the grease filter 6a and then by the odor filter 6b without any paths with lower resistance along the way.

According to one aspect, with reference to the embodiment shown in figures 2 to 7B, the second filter holder compartment 8b comprises a pit 8c (Figure 5A) which serves as a seat for any collection of liquids or fluids that may overflow from the dishes while cooking the food.

It should be noted that filter 6a is preferably shaped to mate with the pattern of pit 8c in order to effectively exploit the volume of the pit itself. It should be noted, with particular reference to figure 6, that the forced suction unit 5 is arranged in a portion of frame 2 different from the one in which pit 8 c of the second filter holder compartment 8b is formed. In particular, the forced suction unit 5 is offset with respect to such a pit 8c.

Such an asymmetrical arrangement of pit 8c and filter 6a with respect to the axis of symmetry of the forced suction unit 5, in case of liquid or the like dropping, advantageously prevents them from directly impinging motor 5f and thus prevents the need of using watertight motors.

It should also be noted, again with reference to Figure 6, that the fluid connection between outlet 5d of the forced suction unit 5 and the first filter holder compartment 8a is implemented by means of screw 5a.

According to one aspect, the second filter holder compartment 8b is constrained to the containment frame 2 in a portion of the same accessible by a user when the hood is installed.

In particular, a protection grid 13 is provided, removably associated with the second filter holder compartment 8b, to protect filter 6a from any items that may be sucked in due to the transverse current generated by the forced suction unit 5 when hood 1 is in use.

With reference again to figures 2 to 7B, hood 1 comprises a cover element 11 for covering closure 9 of the filter holder compartment 8a (figures 2 and 3); this cover element 1 1 is constrained to the containment frame 2 in a portion of the same that is accessible by a user when hood 1 is installed.

In particular, such a cover element 11 is configured in such a way as to be movable between a first position (Figure 2) in which closure 9 of the first filter holder compartment 8a is concealed and a second position (Figure 3) in which such a closure 9 is made accessible to the user.

To this end, the cover element 11 comprises mechanical constraint means operatively associated with the containment frame 2 to switch such a cover element between the first and the second position, and vice versa.

For example, the mechanical constraint means comprise a pivot/hinge mechanism or the like by which door 9 of the filter holder compartment 8a can be made accessible.

Such a pivot/hinge mechanism allows rotates the covering element 11 about an axis of rotation X-X (figure 3).

Again, with reference to figures 2 to 7B, hood 1 further comprises a containment body 12 for hold the filter holder compartments 8a and 8b, where Figures 2-4 show the containment body 12 of the hood in figure 2 when constrained to frame 2 while figures 5, 7 A, and 7B show it removed from frame 2.

It should be noted that the containment body 12 comprises a hob 12a associated with the containment frame 2, which defines a work surface or cooking area divided into a plurality of zones 12b intended to receive respective dishes for cooking the food.

Such a hob 12a comprises heating means 12c for heating said plurality of zones 12b intended to receive respective dishes for cooking food.

It should be noted that such plurality of zones 12b intended to receive respective dishes for cooking food, are those zones in which the heat produced by the heating means 12c spreads.

It should be noted that other zones 12d, 12d' of the hob different and separate from the plurality of zones 12b intended to receive respective dishes for cooking food are not impinged or do not receive the heat produced by the heating means 12c. In one embodiment, hob 12a is a pane of glass and the heating means 12c are magnetic induction plates or electric resistors.

According to one aspect of hood 1 shown in Figures 2 to 7B, the cover element 11 of closure 9 of the first filter holder compartment 8a is arranged in the work surface where foods are prepared and particularly in a zone 12d not heated by the heating means 12c.

In other words, the cover element 11 lies in the same plane in which food is prepared.

According to one aspect of hood 1 shown in Figures 2 to 7B, the cover element 11 of closure 9 of the filter holder compartment 8a is arranged in the work surface where foods are prepared and particularly in a zone 12d not heated by the heating means 12c.

According to one aspect of hood 1 shown in Figures 2 to 7B, the odor filter 6b is arranged in the vicinity of the work surface where food is prepared and in particular in zone 12d not heated by the heating means 12c.

Advantageously, also the protection grid 13 is arranged in the same work surface of the hob but in another zone 12d' not heated by the heating means 12c.

Therefore, in hood 1 shown in the Figures 2 to 7B, the filter holder compartments 8a and 8b and the respective filters 6b and 6a are facing towards the same work surface or cooking area of food.

This allows removing filters 6a and 6b from the same side where the elements necessary for cooking food are, where typically in down draft hoods the grease filters 6a are removable from top for cleaning while the odor filters 6b are replaced by extracting them from below.

Advantageously, having arranged the filter holder compartments 8 a and 8b and filters 6a and 6b on the same surface where zones 12b intended to receive respective dishes for cooking food are defined, this improves hood 1 in terms of ergonomics as it makes the maintenance of filters 6a and 6b easy also for the user without the need for specialized technical personnel.

In other words, due to the fact that the filter holder compartments 8a and 8b and filters 6a and 6b lie on the same surface where zones 12b intended to receive respective dishes for cooking food are defined, hood 1 shown in Figures 2 to 7B allows the advantage over conventional down draft hood not to have occupied space above hob 12a, especially in the island configuration.

By contrast, for hood 1 shown in Figure 1 , the containment body (not shown) is preferably removably constrained to the containment frame 2 in a portion thereof operatively located upstream of the suction section 5b of the forced suction unit 5.

In hood 1 shown in Figure 1, the filter holder compartments 8a and 8b and filters 6a and 6b are facing towards a front wall of the containment body always accessible by the user.

This allows removing filters 6a and 6b without having to remove elements of hood 1, making the maintenance of these filters easy also for the user without the need for specialized technical personnel.

Clearly, a man skilled in the art, in order to meet contingent and specific requirements, may make numerous modifications and variants to the configurations described above.

All such modifications and variants all fall within the scope of protection of the invention as defined by the following claims.

Claims

1. Hood for household environments (1) comprising a containment frame (2), a forced suction unit (5) comprising a suction section (5b) and an outlet (5d), a first opening (3) in said containment frame (2) placed in fluid communication with the outlet (5d) of said forced suction unit (5) and said outlet (5d), the latter being arranged to be engaged by a fume discharge conduit (14), a second opening (4) in said containment frame (2) placed in fluid communication with the suction section (5b) of said forced suction unit (5) and with the environment external to the containment frame (2), at least one filter (6a, 6b) operatively located between said outlet (5d) of said forced suction unit (5) and said fume discharge conduit (14), characterized in that it comprises a first filter holder compartment (8a) configured to contain said at least one filter (6a, 6b) and said first filter holder compartment (8a) being located between said outlet (5d) of said forced suction unit (5) and said fume discharge conduit (14), said first filter holder compartment (8a) defining a bottom (22) and a top (23) connected together by respective pairs of opposite side walls (24, 25), said top (23) delimiting an opening (21), said hood comprising a closure (9) movable between:

- a first position in which said at least one filter (6a, 6b) is accessible through said opening (21) in order to allow the removal of the at least one filter (6a, 6b) from the filter holder compartment (8a), and

- a second position in which said closure (9) provides a tight seal of said opening (21) between said outlet (5d) of said forced suction unit (5) and said fume discharge conduit (14).

2. Hood for household environments according to claim 1, wherein said closure (9) is constrained to said first filter holder compartment (8) in a first portion of the same accessible by a user when the hood is installed.

3. Hood for household environments according to claim 1 or 2, wherein said first filter holder compartment (8a) comprises extraction members for moving said port (9) of said first filter holder compartment (8a) between the first and the second position; said extraction members comprising a user interface designed for controlling the activation of said extraction members.

4. Hood for household environments according to any one of the preceding claims, comprising a cover element (11) for covering said closure (9) of said first filter holder compartment (8a); said cover (11) being constrained to said containment frame (2) in a portion of the same accessible by a user when the hood is installed in such a way as to be movable between a first position, in which it conceals said closure (9) of said first filter holder compartment (8a) from view and a second position in which said closure (9) of the first filter holder compartment (8a) is accessible.

5. Hood for household environments according to claim 4, wherein said cover element (11) comprises mechanical constraint members operatively configured to rotate said cover element (11) about an axis (X-X) thereof between said first and second position and vice versa.

6. Hood for household environments according any one of the preceding claims, wherein said at least one filter (6a, 6b) comprises a first (6b) and a second filter (6a) and said hood comprises a second filter holder compartment (8b) designed to contain said second filter (6a), said second filter holder compartment (8b) being arranged between said second opening (4) and said suction section (5b) of said forced suction unit (5) in said containment frame (2), said first filter holder compartment (8a) being designed to accommodate said first filter (6b).

7. Hood for household environments according to claim 6, wherein said second filter holder compartment (8b) is constrained to said containment frame casing (2) in a second portion of the same accessible by a user when the hood is installed.

8. Hood for household environments according to claim 7, comprising a protection grid (13) removably associated with said second filter holder compartment (8b) for protecting said second filter (6a).

9. Hood for household environments according to claim 1, comprising a containment body (12) comprising a hob (12a) associated with said containment frame (2), said hob (12a) defining a work surface divided in a plurality of zones (12b) intended to receive respective dishes for cooking food dishes and having heating means (12c) for heating said plurality of zones (12b).

10. Hood for household environments according to claim 9, wherein said first and second filter holder compartment (8a, 8b) and the respective filters (6a, 6b) face the same surface in which said zones (12b) intended to receive, in use, the dishes for cooking food are defined.

11. Hood for household environments according to claim 9, wherein said second filter (6a) is operatively located upstream of said suction section (5a) and faces said hob (12a).

12. Hood for household environments according to claim 9, wherein said first filter (6b) is operatively located downstream of said first opening of said containment frame (2).

13. Hood for household environments according to claim 9, wherein said protection grid (13) is arranged in said work surface but in a second zone (12d') of said hob

(12a) not heated by said heating means (12c).

14. Hood for household environments according to claim 9 or 10, wherein said cover element (11) covers said closure (9) of said first filter holder compartment (8a) is arranged in said first zone (12d) of said hob (12a) not heated by said heating means (12c).

15. Hood for household environments according to claim 9, wherein said cover element (11) is arranged in said work surface in a first zone (12d) of said hob (12a) not heated by said heating means ( 12c) .