Extraction hood, extraction unit and associated extraction system

Abstract

Extraction hood, extraction assembly and associated extraction system. This extraction hood (100) comprises a containment enclosure (V102), a partition (112) extending into the containment volume and inclined obliquely to a rear wall, and a grease filter (120) arranged inside the enclosure between the partition (112) and the rear wall (104). A lower edge of the filter and a lower edge of the partition define an inlet slot (126). The extraction hood (100) includes at least one spray nozzle (140). Each nozzle is arranged opposite an upper edge (123B) of the filter between the partition (112) and the filter, each nozzle (140) being configured to generate a water jet in a spray direction (A140) oriented towards the inlet slot. Figure for the abbreviation: Figure 3

Description

Title of the invention: Extraction hood, extraction assembly and associated extraction system

[0001] The present invention relates to an extraction hood, as well as an extraction assembly comprising such a hood. The invention also relates to an extraction system comprising such an extraction hood or such an extraction assembly.

[0002] In professional kitchens, conventional cooking appliances such as electric or gas ovens or cooktops, etc., are fitted with an extraction hood designed to remove hot air, fumes, and particles released during cooking, particularly grease particles. Filters are generally provided to capture these grease particles to prevent their accumulation in the extraction system ducts; the filters are cleaned or replaced as needed.

[0003] Certain specific cooking appliances, such as charcoal ovens or charcoal barbecues, generate incandescent particles, called sparks, which can fly and enter the extraction hood, creating a risk of ignition of accumulated grease. For safety and / or regulatory reasons, traditional extraction hoods cannot be used with these specific cooking appliances.

[0004] It is known to use water-based hoods, which incorporate spray devices to extinguish sparks, generally by forming a curtain of water or a mist of water droplets. Known water-based hoods, however, cannot function properly without water. It is therefore necessary to keep the water running continuously, even when a conventional cooking appliance, i.e., one that does not generate sparks, is in use. This water consumption results in significant costs. It is known to add a grease removal and water recycling system to such a hood; however, such a system is relatively bulky and expensive to install and maintain.

[0005] It is these problems that the invention intends to remedy in particular, by proposing an extraction hood that can be used both with or without water, with improved safety.

[0006] To this end, the invention relates to an extraction hood. According to the invention, the extraction hood comprises: - a cantonment enclosure, which delimits a lower opening and which includes a rear peripheral wall that is substantially vertical and parallel to a longitudinal axis of the enclosure, the longitudinal axis being substantially horizontal rizontal; - a partition, which is arranged inside the enclosure by extending parallel to the longitudinal axis and being inclined obliquely to the rear wall, the partition comprising an upper edge and a lower edge parallel to the longitudinal axis, the upper edge being further from the rear wall than the lower edge; and - a grease filter, which is arranged inside the enclosure between the partition and the rear wall, the filter having an inlet face turned towards the partition and extending parallel to the longitudinal axis,

[0007] whereas: - the intake face comprises an upper edge and a lower edge parallel to the longitudinal axis, the upper edge being further from the rear wall than the lower edge, - the lower edge of the partition and the lower edge of the inlet face define an inlet slot, which extends parallel to the longitudinal axis, through which a flow of grease-laden air can be admitted between the partition and the filter, and then pass through the filter, and - the extraction hood includes at least one spray nozzle: • each nozzle is arranged opposite the upper edge of the inlet face between the partition and the inlet face, beyond the inlet face opposite the inlet slot, • Each nozzle is configured to generate a jet of water following a spray direction oriented towards the inlet slot.

[0008] Thanks to the invention, when the nozzles are not supplied with water and the hood is in operation, the airflow passes through the filter, which retains the particles carried by the airflow, in particular oil or grease particles. When the nozzles are supplied with water, they form a water barrier extending into the upstream volume, in front of the filter. Thus, the airflow must pass through the water curtain before passing through the filter, which extinguishes any potential sparks carried by the airflow before they can come into contact with the filters. Furthermore, the airflow generates vortices within the upstream volume, which disrupts the water barrier. Droplets are thus projected onto one face of the filter oriented towards the upstream volume, which cools the filter and further reduces the risk of ignition of the grease retained by the filter.The filter forms a second barrier against sparks, preventing them from entering the ducts downstream of the hood, thus improving the safety of the hood.

[0009] According to advantageous but not mandatory aspects of the invention, such a hood may incorporate one or more of the following features taken individually or according to any technically feasible combination: - Each nozzle: • is configured to generate a substantially flat water jet, each nozzle defining a respective spray plane, which carries the corresponding spray axis, • is oriented so that the corresponding spray plane is parallel to the longitudinal axis. - When each nozzle generates a jet of water, the corresponding jet of water defines a spray volume associated with that nozzle, while the nozzle(s) are arranged so that any point belonging to the lower edge of the extraction face is contained within the spray volume of at least one of the nozzles. - Each nozzle is configured to operate under a water pressure between 1 and 3 bars. - The partition comprises an inner face, oriented towards the filter's inlet face, and an outer face, oriented opposite to the inner face.

[0010] while the enclosure also includes a lip, which extends from a lower edge of the rear wall, opposite the outer face of the partition,

[0011] and that the lip provides with the partition an air passage, which is connected to the inlet slot and which has a narrowed section, so as to increase the speed of the airflow through the air passage when the hood is in operation. - The cantonment enclosure also includes two lateral flanges, which are arranged orthogonally to the longitudinal axis and which close off two end openings of the enclosure,

[0012] while the side flanges are assembled to the rear wall and the lip in a sealed manner by welding.

[0013] The invention also relates to an extraction assembly, which includes: - an extraction hood as described previously, and - a regulating device, configured to control the water supply to the spray nozzles,

[0014] in which: - The control system includes a detection device, configured to detect at least one state related to the environment of the hood, - the control device is configured to open or close the water supply according to one or more states detected by the detection device.

[0015] According to advantageous but not mandatory aspects of the invention, such an extraction assembly may incorporate one or more of the following features taken individually or in any technically permissible combination:

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

[0022]

[0023] - The detection device includes a temperature sensor configured to detect a heat source, for example an infrared sensor, while the control device is configured to open the water supply when the sensor detects a heat source with a temperature above a predetermined temperature threshold. - The temperature sensor is arranged near the upper edge of the partition, on the side of an external face of the partition, the external face being oriented opposite the filter, so as to detect a heat source located opposite the extraction hood. - The temperature sensor is arranged to measure the temperature of the airflow drawn in through an extraction vent of the extraction hood. The invention also relates to an extraction system, which includes: - an extraction hood as described above or an extraction assembly as described above, and - a cooking appliance that may generate sparks, in particular a charcoal oven or a barbecue. The invention will be better understood, and other advantages thereof will become more apparent, in the light of the following description of an embodiment of an extraction hood and an extraction system, conforming to its principle, given solely by way of example and with reference to the accompanying drawings, in which: - [Fig.1] [Fig.1] is a schematic view of an extraction installation according to the invention, the installation comprising an extraction assembly, also according to the invention; - [Fig.2] [Fig.2] is a perspective view of the extraction assembly of [Fig.1] - [Fig.3] [Fig.3] is a perspective view of the extraction set of [Fig.1], with some elements hidden, and - [Fig.4] [Fig.4] is a perspective view of a spray nozzle of the extraction assembly of [Fig.1]. An extraction system 10 is shown in [Fig. 1]. The extraction system 10 includes a cooking appliance 12. The cooking appliance 12 is here an oven, in particular a charcoal oven, with a door 13. As a non-limiting alternative, the cooking appliance 12 is a barbecue. Generally, the cooking appliance 12 is likely, during its use, to generate sparks, for example, here when the door 13 is opened to insert or remove objects from inside the oven, to add fuel to the oven, or to fan the embers, etc. The extraction system 10 is generally installed in a kitchen 14, which includes a floor 16 and a wall 18. The floor 16 is assumed to be horizontal, while the wall 18 is assumed to be vertical. The cooking appliance 12 is here placed against wall 18.

[0024] The extraction installation 10 also includes an extraction assembly 20, which includes an extraction hood 100 and a control device 200, which is configured to control the operation of the extraction hood 100, in particular the switching on and off of the extraction hood 100.

[0025] The extraction hood 100, also referred to simply as hood 100 in the context of this description, is here fixed to the wall 18 above the cooking appliance 12. The hood 100 is configured to capture the laden air, i.e. hot air laden with particles of oil or grease, emitted by the cooking appliance 12, as well as any sparks that may be emitted by the cooking appliance 12 during its use.

[0026] In the illustrated example, the hood 100 comprises a generally parallelepiped-shaped casing 102 with a rear wall 104, which here extends opposite the wall 18, and a front wall 106, which extends parallel to and at a distance from the rear wall 104. In the illustrated example, the rear wall 104 is vertical and has an elongated rectangular shape, which extends along its longest length parallel to a longitudinal axis A102 of the casing 102. By extension, the longitudinal axis A102 is also a longitudinal axis for the extraction hood 100. When the hood 100 is in use, the longitudinal axis A102 is generally parallel to the wall 18 and the floor 16; in other words, the longitudinal axis A102 is generally horizontal. The rear wall 104 includes a lower edge 105A and an upper edge 105B, which extend parallel to the longitudinal axis A102.Similarly, the front wall 106 comprises a lower edge 107A and an upper edge 107B, which extend parallel to the longitudinal axis A102.

[0027] The hood 100 here has a globally symmetrical shape with respect to a transverse plane P100 of the extraction hood 100, the transverse plane P100 being a plane orthogonal to the longitudinal axis A102.

[0028] The rear wall 104 and the front wall 106 are connected to each other by two lateral flanges 108A and 108B, which are arranged orthogonally to the longitudinal axis A102, on either side of the transverse plane P100. The rear wall 104, front wall 106, and side panels 108A and 108B are peripheral walls of the enclosure 102, which are also connected by a top wall 110 of the enclosure 102. In particular, the upper edge 105B of the rear wall 104 and the upper edge 107B of the front wall 106 are connected to each other by the top wall 110. The top wall 110 is generally located opposite a kitchen ceiling 14, the top wall 110 closing the enclosure 102 upwards, while the enclosure 102 is open downwards, towards the cooking appliance 12. Thus, the enclosure 102 forms a containment chamber VI00 for the hood 100, capable of capturing sparks and the laden air emitted by the cooking appliance 12.

[0029] The hood 100 also includes a partition 112, which is arranged inside the enclosure V102. The partition 112 extends parallel to the longitudinal axis A102 and is inclined obliquely with respect to the rear wall 104. The partition 112 includes an upper edge 114A and a lower edge 114B, which are parallel to the longitudinal axis A102, the upper edge 114A being further from the rear wall 104 than is the lower edge 14B. The upper edge 114A is connected to the upper wall 110 in a watertight manner, here by a vertical fitting 115, while the lower edge 114B is located at a distance from the rear wall 104. The partition comprises an inner face 116A, which is oriented towards the rear wall 104, and an outer face 116B, which is oriented in the opposite direction to the inner face 116A.

[0030] When the hood 100 is in its normal operating configuration, particularly when the hood 100 is fixed to the wall 18, the external face 116B is oriented towards the users of the cooking appliance 12. In the illustrated example, the partition 112 comprises a frame 117 on which several panels 118 are mounted, here three in number, which are removable to facilitate maintenance of the hood 100, in particular cleaning. When the panels 118 are mounted on the frame 117, as shown in Figures 2 and 3, the partition 112 is considered airtight, i.e., air cannot pass through the partition 112 but must flow around it. In particular, the frame 117 also provides airtightness and watertightness with the side flanges 108A and 108B.

[0031] The partition 112 and the rear wall 104 together form a filtration enclosure V112. The filtration enclosure VI12 has two end openings which are closed, in the direction of the longitudinal axis, by the side flanges 108A and 108B. The filtration enclosure VI12 delimits a volume which is a portion of a volume delimited by the containment enclosure V100.

[0032] The extraction hood 100 also includes a grease filter 120, which is arranged inside the filtration chamber VI12 between the partition 112 and the rear wall 104. The filter 120 has an inlet face 122A, which is oriented towards the partition 112 and extends parallel to the longitudinal axis A102. The inlet face 122A extends here opposite the inner face 116A of the partition 112. In other words, the inner face 116A is oriented towards the inlet face 122A of the filter 120, while the outer face 116B is oriented away from the filter 120.

[0033] The inlet face 122A has a lower edge 123A and an upper edge 123B, the lower edges 123A and upper edges 123B being parallel to the longitudinal axis A102, the upper edge 123B being further from the rear wall 104 than the lower edge 123A. The filter 120 also has an extraction face 122B, which is oriented opposite to the inlet face 122A.

[0034] In the illustrated example, the filter 120 comprises a chassis 123, on which are three filter panels 124 are mounted. The filter panels 124 are removable, so that a user can replace or clean them, preferably by hand and without tools, after removing one or more panels 118 from the partition 112.

[0035] The filter 120 and the rear wall 104 together form an extraction chamber V120, into which an extraction outlet 125 opens. The extraction chamber V120 delimits a volume that is a portion of the volume delimited by the filtration chamber VI12. The extraction outlet 125 is shown schematically in [Fig. 1]. The extraction outlet 125 is here provided through the upper wall 110. According to variants not shown, the extraction outlet 125 is provided through the bottom wall 104, or even through one of the side flanges 108A and 108B.

[0036] In normal operation, the extraction vent 125 is connected to an extraction device, for example a fan, via an extraction duct, so that the extraction device draws air into the extraction chamber V120. The fan and duct are not shown. In the illustrated example, the fan is not part of the hood 100, which is referred to as a "static hood." In the variant not shown, the fan is part of the hood 100. Advantageously, the control device 200 is also configured to control the fan, for example, starting, stopping, and adjusting the fan speed. The filter 120 is connected in a sealed manner to the respective elements of the box 102, in particular to the rear wall 104 and the upper wall 110, so that the airflow generated by the suction of the extraction unit passes essentially, preferably entirely, through the filter 120, here through the filter panels 124..

[0037] In this description, the terms "upstream" and "downstream" are introduced, where necessary, in relation to the airflow when the extraction hood 100 is operating normally. Thus, the extraction face 122A of the filter 120 is an upstream face of the filter 120.

[0038] The lower edge 114A of the partition 112 and the lower edge 123A of the inlet face 122A define an air inlet slot 126, which extends parallel to the longitudinal axis A10 and through which a flow of charged air can be admitted between the partition 112 and the filter 120, and then pass through the filter 120.

[0039] The VI12 filtration chamber also includes a lip 128. The lip 128 extends from the lower edge 105A of the rear wall 104, opposite the external face 116B of the partition 112. In the illustrated example, the lip 128 is made in one piece with the rear wall 104, by folding and decoupling a metal sheet, preferably a stainless steel sheet.

[0040] The lip 128 provides with the partition 112 an air passage 130, which is connected to the air inlet slot 126 and which has a narrowed cross-section, so as to increase a speed of the airflow through the air passage 130 when the hood 100 is in operation, which improves the capture of particles carried by the laden air.

[0041] The extraction hood 100 includes at least one water spray nozzle 140. In the illustrated example, the hood includes several nozzles 140, in particular six nozzles 140, which are mounted on a water distribution manifold 142. The manifold 142 is configured to be connected to a water inlet 145, which is shown schematically in [Fig. 1]. The water inlet 145 is not part of the invention but serves to illustrate its context of use.

[0042] The nozzles 140 are thus aligned parallel to the longitudinal axis A102. Each nozzle 140 is arranged opposite the upper edge 123B of the inlet face 122 between the partition 112 and the inlet face 122, beyond the inlet face 122 opposite the inlet slot 126.

[0043] A nozzle 140 is schematically represented in [Fig. 4]. Preferably, the nozzles 140 are identical to each other. Each nozzle 140 includes an orifice 142, through which water exits when the nozzle 140 is supplied with pressurized water. Each nozzle 140 is configured to generate a water jet in a principal direction, defining a spray direction A140.

[0044] For each nozzle, the spray direction A140 is oriented towards the inlet slot 126. Together, the water jets generated by each of the nozzles 142 aligned parallel to the longitudinal axis A102 form a water barrier, which extends from the nozzles 140 to the slot 126. Thus, when sparks are carried by the airflow into the slot 130, the sparks must pass through this water curtain, or they are extinguished, before reaching the filter 120. The risk of ignition of the greases captured by the filter 120 is reduced.

[0045] Thanks to the special arrangement of the 140 nozzles, the 140 nozzles advantageously do not need to be supplied with high-pressure water, for example by means of a dedicated compressor. Thus, each 140 nozzle is configured to operate under a water pressure of between 1 and 3 bar, which corresponds to the pressure of a conventional mains water supply.

[0046] The side flanges 108A and 108B are assembled to the rear wall 104 and the lip 128 in a sealed manner by welding, so as to prevent air or water leaks in a safe and durable manner, in particular in relation to known hoods which are generally manufactured by screwing and sealing.

[0047] In the application considered, each nozzle 140 of the hood 100 is preferably configured to generate a substantially flat water jet, each nozzle 140 defining a respective spray plane P140, which carries the corresponding spray axis A140.

[0048] Schematically, the water jet generated by each nozzle 140 exits the orifice 142 and diverges, on either side of the spray axis A140, while remaining essentially parallel to plane P140. Thus, the water jet generated by each nozzle 140 presents, in cross-section in a plane orthogonal to the spray axis A140, an oblong shape. Of course, in reality, the water jet tends to widen and disperse as one moves away from the orifice 142, especially when several neighboring nozzles 140 generate water jets that interfere with each other.

[0049] Preferably, each nozzle 140 is oriented so that the corresponding spray plane P140 is parallel to the longitudinal axis A142. Thus, the bulk of the water sprayed by the nozzles 140 forms the water curtain between the inner face 116A of the partition 112 and the extraction face 122A of the filter 120.

[0050] In addition, when the extraction device is in operation, the airflow generates turbulence, which promotes the dispersion of the water jets, so that the entire extraction face 122A of the filter 120 is wet, which helps to cool the filter 122, reducing the risk of ignition of the greases retained by the filter.

[0051] When each nozzle 140 generates a water jet, the corresponding water jet defines a spray volume associated with that nozzle 140. Preferably, the nozzle(s) are arranged so that any point belonging to the lower edge 123 A of the filter 122 is contained within the spray volume of at least one of the nozzles 140. This ensures that, when the nozzles 140 generate a water jet, the entire lower edge 123 A of the filter 122 is reached by the water jet minus one nozzle.

[0052] More generally, it is understood that the number of nozzles 140 is adapted according to a length of the hood 100, the length being measured parallel to the longitudinal axis A102. In the illustrated example, the hood 100 has a length of 1500 mm and includes six nozzles 140, which are regularly spaced at 250 mm.

[0053] The control device 200 is now described, which is configured to control the water supply 145 to the spray nozzles 140, for example by means of a solenoid valve 202 positioned on this water supply 145. The control device 200 advantageously includes a detection device 204, configured to detect at least one state related to an environment of the hood 100, and to open or close the water supply 145 according to one or more states detected by the detection device 204.

[0054] In the illustrated example, the detection device 204 includes a temperature sensor 206, which is configured to detect a heat source. As in the illustrated example, the detection device 204 preferably includes an infrared temperature sensor 206. The control device 200 is configured to open the water inlet 145, by means of the solenoid valve 202, when the temperature sensor 206 detects a heat source with a temperature exceeding a predetermined temperature threshold.

[0055] Preferably, the detection device 204 - particularly when it is a temperature sensor 206 - is integrated into the hood 100, preferably arranged near the upper edge 114A of the partition 112, on the side of the external face 116B of the partition 112, so as to detect a heat source located opposite the extraction hood 100. The two temperature sensors 206 are arranged here in the upper wall 110 of the box 102.

[0056] In the illustrated example, the detection device 204 is configured to detect a temperature increase following the opening of the oven door 13 12 and the opening of the water inlet 145. Thus, the nozzles 140 only spray water when sparks are likely to be generated, and do not spray water the rest of the time. The extraction system 10 is therefore particularly water-efficient, while offering improved safety when sparks are likely to be generated.

[0057] It is understood that multiple configurations are possible to adapt the detection device 204 to the cooking appliance 12 associated with the extraction hood 100.

[0058] According to an unrepresented variant, the detection device 204 includes a temperature sensor arranged to measure a temperature of the airflow aspirated by the extraction vent 125 of the extraction hood 100. For example, a temperature sensor is arranged in the extraction duct, downstream of the extraction vent 125.

[0059] According to another variant not shown, for example when the cooking appliance 12 is a barbecue, the control device 200 opens the water inlet 145 to an intermediate level when the cooking appliance 12 is in operation, the operation being characterized by a temperature of the barbecue above a first predetermined level and, in the event that food placed on the barbecue catches fire and generates a temperature above a second level, for example because of fats dripping onto the coals, the control device 200 opens the water inlet 145 to the maximum, to extinguish any sparks which would be carried to the filtration volume V112.

[0060] According to another variant not shown, the control device 200 opens the water inlet 145 at regular intervals, for example for a few seconds every ten minutes, so as to keep the filter 120 wet and / or to cool it, which facilitates subsequent cleaning of the filter 120.

[0061] The embodiments and variants mentioned above can be combined with each other to generate new embodiments of the invention.

Claims

Demands

1. Extraction hood (100), comprising: • a cantonment enclosure (V102), which delimits a lower opening and which includes a rear peripheral wall (104) substantially vertical and parallel to a longitudinal axis (A102) of the enclosure, the longitudinal axis being substantially horizontal; • a partition (112), which is arranged inside the enclosure by extending parallel to the longitudinal axis (A102) and being inclined obliquely with respect to the rear wall, the partition (112) comprising an upper edge (114A) and a lower edge (114B) parallel to the longitudinal axis, the upper edge being further from the rear wall than the lower edge; and • a grease filter (120), which is arranged inside the enclosure between the partition (112) and the rear wall (104), the filter having an inlet face (122A) turned towards the partition (112) and extending parallel to the longitudinal axis (A 102), in which: • the intake face (122A) comprises an upper edge (123B) and a lower edge (123A) parallel to the longitudinal axis, the upper edge being further from the rear wall than the lower edge, • the lower edge (114B) of the partition (112) and the lower edge (123A) of the inlet face define an inlet slot (126), which extends parallel to the longitudinal axis, through which a flow of grease-laden air can be admitted between the partition (112) and the filter (120), and then pass through the filter, and • The extraction hood (100) includes at least one spray nozzle (140): • Each nozzle is arranged opposite the upper edge (123B) of the inlet face between the partition (112) and the inlet face (122A), beyond the inlet face opposite the inlet slot, Each nozzle (140) is configured to generate a jet of water following a spray direction (A140) oriented towards the inlet slot (126), and each nozzle (140) configured to operate under a water pressure between 1 and 3 bars.

2. Extraction hood (100) according to claim 1, wherein: • each nozzle (140) is configured to generate a substantially flat water jet, each nozzle (140) defining a respective spray plane (P140), which carries the corresponding spray axis, and • each nozzle (140) is oriented so that the corresponding spray plane is parallel to the longitudinal axis (A102).

3. Extraction hood (100) according to any one of claims 1 or 2, wherein: • when each nozzle (140) generates a jet of water, the corresponding jet of water defines a spray volume associated with that nozzle, and • the nozzle(s) (140) are arranged so that any point ap partaging the lower edge (123A) of the extraction face (122A) is contained within the spray volume of at least one of the nozzles.

4. Extraction hood (100) according to any one of claims 1 to 3, wherein: • the partition (112) comprises an inner face (116A), oriented towards the inlet face (122A) of the filter (120), and an outer face (116B), oriented opposite the inner face, • the enclosure also comprises a lip (128), extending from a lower edge (105A) of the rear wall (104), opposite the outer face of the partition (112), and • the lip (128) forms with the partition (112) an air passage (130), which is connected to the inlet slot (126) and which has a constricted cross-section, so as to increase the flow velocity of air passing through the air passage when the hood is in operation.

5. Extraction hood (100) according to claim 4, wherein: • the containment enclosure (V102) also includes two side flanges (108A, 108B), which are arranged orthogonally to the longitudinal axis (A102) and which close two end openings of the enclosure, • the side flanges are assembled to the rear wall (104) and to the lip (128) in a hermetic manner by welding.

6. Extraction assembly (20), comprising: • an extraction hood (100) conforming to any one of the preceding claims, and • a control device (200), configured to control a water supply (145) from the spray nozzles (140), wherein: • the control device (200) includes a detection device (204), configured to detect at least one state related to an environment of the hood, • the control device is configured to open or close the water supply according to one or more states detected by the detection device.

7. Extraction assembly (20) according to claim 6, wherein: • the detection device (204) includes a temperature sensor (206) configured to detect a heat source, for example an infrared sensor, • the control device (200) is configured to open the water inlet (145) when the sensor detects a heat source with a temperature above a predetermined temperature threshold.

8. Extraction assembly (20) according to claim 7, wherein: • the temperature sensor (206) is arranged in the vicinity of the upper edge (114A) of the partition (112), on the side of an external face (116B) of the partition (112), the external face being oriented opposite the filter (120), so as to detect a heat source located opposite the extraction hood (100).

9. Extraction assembly (20) according to claim 7, wherein: • the temperature sensor (206) is arranged to measure a temperature of the airflow drawn in by an extraction vent (125) of the extraction hood (100).

10. Extraction installation (10), comprising • an extraction hood (100) according to any one of claims 1 to 5 or an extraction assembly (20) according to any one of claims 6 to 9, and • a cooking appliance (12) capable of generating sparks, in particular a charcoal oven or a barbecue.

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