FR3068116A1 - MODULE FOR THE TREATMENT OF SMOKE AND ODOR CONTAINED IN DISCHARGES EMITTED BY A COOKING APPARATUS, AND MODULAR COOKING ASSEMBLY COMPRISING SUCH A MODULE - Google Patents

Abstract

The invention proposes a stepped module for the treatment of cooking waste emitted by a cooking apparatus (26), characterized in that it comprises, successively arranged in series, at least one electrostatic filter (72) for the elimination of fumes and at least one activated carbon filter (98) for eliminating odors, a forced circulation system of the air flow containing the cooking waste through these filters (74, 98) and a discharge orifice of the flow of air having passed through the filters. The module comprises a high compartment (32) for flue gas treatment in which at least one electrostatic filter is arranged and a low odor treatment compartment (34) which is connected to the top compartment (32) and in which at least one filter is arranged. activated carbon. The invention also proposes a modular assembly which comprises, superimposed vertically, an upper module (22) for collecting cooking waste and a lower processing module (24) according to the invention.

Description

"Module for treating smoke and odors contained in the emissions emitted by a cooking appliance, and modular cooking assembly comprising such a module"

TECHNICAL FIELD OF THE INVENTION

The invention relates to the treatment of discharges and scents from cooking appliances with a view to eliminating, in particular, smoke and odors.

TECHNICAL BACKGROUND OF THE INVENTION

The invention relates to a modular assembly for cooking food of the type comprising a cooking assembly, such as for example a grill, a barbecue, or a plancha which emits into the surrounding atmosphere, and in particular generally vertically upwards. -above the cooking surface, cooking waste including in particular grease, smoke and odors.

The use of a cooking appliance emitting such discharges, whether it is for domestic use or for use in a place of public catering, requires management and elimination of the polluting elements contained in the discharges in particular in order to respect the standards of hygiene in force, and also for the comfort of the users.

It is in particular a question of collecting the greases, and of eliminating the fumes and the odors in such a way that, at the end of a process of treatment of the air flow containing these discharges and pollutants, the flow of treated air is "clean" and capable of being discharged directly into the atmosphere, to the outside of an enclosed place in which the cooking appliance is located, preferably at low altitude, or inside the premises closed itself.

The invention aims to propose in particular a processing module which is as efficient as possible both from the point of view of the result and of its day-to-day management, particularly with regard to its regular maintenance in order to maintain its performance.

BRIEF SUMMARY OF THE INVENTION

The invention proposes a module for the treatment of cooking rejections emitted by a cooking appliance, characterized in that it comprises, arranged successively in series:

- At least one electrostatic filter, in particular for the elimination of smoke, and at least one activated carbon filter for the elimination of odors, in particular two activated carbon filters arranged in parallel;

- a system of forced circulation of the air flow containing the cooking waste through said filters;

- an air flow discharge opening having passed through the filters.

According to other characteristics of the processing module:

the processing module is a layered module comprising, arranged in series and in a superimposed manner:

a top smoke treatment compartment which is capable of being connected to a source of cooking waste and in which at least one electrostatic filter is arranged, and

- a lower odor treatment compartment which is connected to the upper compartment and in which at least one activated carbon filter is arranged.

- the forced air flow circulation system comprises a fan whose inlet is connected to the top compartment, downstream of the at least one electrostatic filter and whose outlet is connected to the bottom compartment, upstream of the at least one filter charcoal ;

- The fan is a centrifugal fan, the wheel of which is arranged inside the top compartment, and of which a motor for driving the wheel in rotation is arranged outside the lower module for processing cooking waste;

- The module includes at least two electrostatic filters which are arranged in series in the upper smoke treatment compartment;

the two electrostatic filters successively comprise, according to the direction of flow of the air flow, a first electrostatic filter with a first filtration capacity followed by a second electrostatic filter with a second treatment capacity, in particular greater than the first processing capacity;

- The module includes means for indicating the state of charge of each of the electrostatic filters, and means for selective control of one and / or the other of the electrostatic filters;

- The module includes at least two activated carbon filters which are arranged in parallel in the low odor treatment compartment.

The invention also proposes a modular assembly for the treatment of cooking rejections emitted by a cooking appliance characterized in that it comprises, vertically superimposed:

- an upper module for collecting cooking waste;

- And a lower module for processing cooking waste collected by the upper module produced according to the invention.

According to other characteristics of the set:

- the upper cooking waste collection module includes:

- a box-shaped upper suction hood which has an open upper inlet face for suctioning cooking waste, in particular through a mesh filter, and a lower outlet face which is open downwards for the collection of sucked off cooking waste, and

- a rear box arranged under the upper hood which extends vertically under the upper hood, an open upper face of which is connected to the lower outlet face of the upper hood, and the lower face of which has an opening which is connected to the module lower processing of collected cooking waste.

the inlet face of the upper hood is arranged vertically above a work surface which extends horizontally between the upper and lower modules and forward from the rear casing to delimit a free upper face which is in particular capable of receiving a cooking appliance;

- the inlet face of the upper hood is arranged vertically and towards the rear beyond a rear vertical wall of the rear casing, so as to extend above a cooking appliance disposed adjacent to it to this rear vertical wall.

BRIEF DESCRIPTION OF THE FIGURES

Other characteristics and advantages of the invention will appear during the reading of the detailed description which will follow for the understanding of which reference will be made to the appended drawings in which:

- Figure 1 is a perspective view which shows an embodiment of a modular cooking assembly which comprises a lower module for the treatment of cooking waste according to the invention;

- Figure 2 is a view similar to that of Figure one, from another perspective angle;

- Figure 3 is a perspective view on a larger scale of the lower module of the cooking assembly shown in Figure 2;

- Figure 4 is a perspective view, according to another angle of representation, of the lower module shown in Figure 3 on which certain structural elements have been removed to reveal the main internal components of the upper compartment;

- Figure 5 is an exploded perspective view of some of the components of the upper compartment of the lower module of Figure 4;

- Figure 6 is an exploded perspective view of some of the components of the bottom compartment of the lower module of Figure 4;

- Figure 7 is a perspective view of the upper module of the cooking appliance belonging to the assembly illustrated in Figures 1 and 2;

- Figure 8 is an exploded perspective view of the main components of the sub-assembly illustrated in Figure 7;

- Figure 9 is a sectional view, through a vertical and transverse plane, of the assembly illustrated in Figures 1 and 2;

- Figure 10 is a sectional view, through a vertical and longitudinal plane, of the main components of the lower compartment;

- Figure 11 is a view similar to that of Figure 2 which illustrates an alternative embodiment of an assembly according to the invention adapted to cooperate with an independent cooking appliance; and

- Figure 12 is a perspective view which illustrates an alternative embodiment of a lower module according to the invention.

DETAILED DESCRIPTION OF THE FIGURES

In the following description, elements having an identical structure or analogous functions will be designated by the same references.

In the following description, longitudinal, vertical and transverse orientations indicated by the trihedron L, V, T in the figures will be adopted without limitation. A horizontal plane is also defined which extends longitudinally and transversely.

The horizontal and transverse axis T is oriented from back to front.

There is shown in Figures 1 and 2 an assembly 20 according to the invention which comprises an upper module 22 for collecting cooking waste, a lower module 24 for processing cooking waste emitted by a cooking appliance 26, which is here associated with assembly 20.

The upper module 22 comprises an upper hood 28 for suctioning the cooking waste emitted by the cooking appliance 26 and a rear box 30 ensuring a uniform suction and the circulation of the waste collected by the upper 28 in the direction of the lower module 24.

The lower module 24 comprises, arranged in a stepped or superimposed manner, an upper compartment 32 for treating smoke and a lower compartment 34 for treating odors.

As can be seen in particular in detail in FIGS. 7 and 8, the upper hood 28 is in the general form of a rectangular parallelepiped box whose front longitudinal face 36 is generally open horizontally transversely forwards, and vertically towards the bottom so as to constitute an entry face and to extend above the open upper face 38 of the cooking appliance 26.

The upper hood 28 has an open horizontal lower outlet face 40, of rectangular outline.

An air flow comprising, for example, cooking rejects and penetrating through the open inlet face 36 can exit from the upper hood 28 through its lower outlet face 40, here by way of non-limiting example, passing through a grid at mesh 42 of known general design, in particular making it possible to filter grease mechanically.

Arranged directly under the open outlet face 40 of the upper hood 28, the upper module 20 for collecting rejects comprises a rear box 30 of generally rectangular parallelepiped shape, the upper inlet face 44 of rectangular outline is open and is connected to the open outlet face 40.

The lower face 46 of the rear casing 30 is of rectangular outline and is closed by an intermediate horizontal plate 48 of the same longitudinal width as the upper hood 28 and the rear casing 30, but it extends transversely forwards so that it constitutes a tray or work surface on which the cooking appliance 26 in particular rests.

Thus, the intermediate plate 48 ensures the closing of the lower face 46 of the rear box 30.

At its front end, the intermediate plate 48 has a vertical rim 103.

The front part of the plate 48 protects the electrical or electronic control unit or box located below. The raised rim stops the flow of liquids to the front of the lower module and channels them laterally to both sides or transverse edges.

For the outlet of the air flow out of the rear casing 30, the intermediate plate 48 has a circular outlet orifice 50 which is arranged to the right of the lower face 46 and here to the left when considering FIGS. 1 and 7.

Thus, after passing through the upper hood 28 and the rear casing 30, the air flow polluted by the cooking waste leaves the upper collection module 22 through the circular outlet orifice 50.

By way of nonlimiting example, the cooking appliance 26 illustrated diagrammatically in the figures is for example a grill, a barbecue, or even a plancha which may include a drawer 27 for collecting cooking waste.

The cooking appliance 26 rests by its lower face with rectangular outline 25 on the part facing the upper face of the intermediate plate 48, while being attached to the front face 45 of the rear casing 30.

As can be seen in particular in FIGS. 1 and 7, the intermediate partition 48 extends transversely forwards beyond the front face of the cooking appliance 26 to constitute a work surface.

As is particularly visible in FIG. 3, the intermediate plate 48 constitutes the upper partition of the lower treatment module 24, of which it closes the open upper face of the upper compartment 32.

As can be seen in detail in Figures 3 to 6, the lower processing module 24 has a generally rectangular parallelepiped shape and is here provided on its underside with four castors which can be locked.

The lower processing module 24 and the upper collecting module 22, as well as the cooking appliance 26 which it carries, form an assembly 20 which can be moved easily.

According to a variant not shown, the rollers 52 can be omitted to constitute a fixed assembly 20.

The high box 32 has three rectangular parallelepiped housings longitudinally adjacent from left to right.

The first housing 54 is closed by the portion opposite the intermediate horizontal plate 48 and it is arranged to the right of the orifice 50 so that the air flow can enter and then exit therefrom through a rectangular window 56 formed in a first vertical and transverse intermediate partition 58.

The second housing 60 is closed by the portion facing the intermediate horizontal plate 48 and it is delimited longitudinally by a second intermediate vertical and transverse partition 62 which also includes a rectangular window 64 which puts the second housing 60 into communication with the third housing 66 which is also closed by the intermediate horizontal plate 48.

An air flow penetrating through the orifice 50 of the intermediate horizontal plate 48 can penetrate into the first housing 54 then, passing through the window 56 penetrates longitudinally into the second housing 60 then, through the window 64, leaves the second housing 60 to enter the third housing 66.

The three housings 54, 60 and 66 are all closed at their lower face by a horizontal partition 68 which also constitutes the upper partition, low box 34.

The second central housing 60 is closed at its front face by a vertical plate belonging to an electrical and / or electronic control unit or box 70 which is arranged on the vertical front face of the upper box 32 of the lower treatment module 24.

It is the second central housing 60 which houses a first electrostatic filter 72 having a first processing capacity, and a second electrostatic filter 74 having a second processing capacity which is preferably greater than the first processing capacity of the first electrostatic filter 72 .

Each electrostatic filter 72, 74 is in the general form of a rectangular parallelepiped block which extends generally in a vertical and transverse plane.

The electrostatic filters 72, 74 are longitudinally adjacent to each other and are located between the partitions 58 and 62 and vertically in line with the aligned windows 56 and 64.

Thus, an air flow having penetrated into the first housing 54 successively passes through the first electrostatic filter 72 then the second electrostatic filter 74, then leaves the second housing 60 to enter the third housing 66.

Below the electrostatic filters 72 and 74, a drawer 76 can be provided for recovering waste from the electrostatic filters 72 and 74.

To cause forced circulation of the air flow containing the cooking waste, previously collected by the upper module 22, the lower treatment module 24 here comprises, by way of nonlimiting example, a centrifugal fan 80 whose internal wheel 82 is rotated by an electric drive motor 84.

The centrifugal fan 80 with its internal wheel 82 and its volute 86 is arranged inside the third housing 66 while, in particular to avoid overheating, the electric drive motor 84 is arranged outside the top box 32 with its output shaft, not shown, connected to the internal wheel 82.

The axial inlet of the internal wheel 82 is arranged substantially in line with the window 64 and the air flow which penetrates axially into the internal wheel 82 exits radially from the volute 86 vertically downwards, by an outlet flange 88 and this flow is discharged, in the form of a forced flow, towards the bottom box 34 through a rectangular orifice 90 formed and arranged for this purpose in the partition 68.

The bottom box 34 is also of generally rectangular parallelepiped shape and it has a first housing which is arranged in line with the orifice 90 formed in the horizontal partition 68 which closes the upper face of the bottom box 34.

This first housing 92 is delimited longitudinally by a vertical and transverse partition 94 which has two circular holes 96 so as to put the first housing 92 into communication with each of two carbon filters 98 arranged in parallel, each of which is in the form of a horizontal cylindrical cartridge with longitudinal extension.

The two carbon filters 98 are arranged in the second housing 93 of the bottom compartment 34.

The number of cartridges 98 is defined according to the volume / flow of air to be treated.

Thus, the air flow having penetrated into the first housing 92 can pass through the two carbon filters 98, longitudinally from right to left by considering FIG. 6, to exit therefrom and emerge by the lateral, vertical and transverse face, open from outlet 100 of the bottom box 34 of the lower processing module 24.

The outlet face 100 is here closed by an outlet grid 102 making it possible in particular to direct the flow of treated air leaving the lower module 24.

Thus, the centrifugal fan 80 operates by suction of the air flow having successively passed through the electrostatic filters 72, 74, then by discharge of the suction air flow, through the activated carbon filters 98 arranged in parallel.

When the air flow which passes through the second module 24, after having been collected by the upper module 22, it has successively undergone three stages of filtration, through the mesh filter 42, the block of the two electro-static filters 72 and 74, and finally the group of two carbon filters 98.

In the alternative embodiment shown in FIG. 11, the assembly 20 does not carry a cooking appliance and the orientation of the upper hood 28 is turned 180 degrees - around a vertical axis, relative to that which 'It occupies in Figures 1 and 2 so that its open inlet face 36 extends generally horizontally and transversely towards the rear of the assembly 20, and vertically downwards.

Thus, it is possible to use the treatment assembly 20 for an independent cooking appliance, not shown in FIG. 11, which can be positioned behind the lower treatment compartment 24 in such a way that the discharges and scents of the cooking appliance are sucked by the upper hood 28, then are treated by the lower module 24 for processing the assembly 20.

The fact of using two electrostatic filters 72, 74 which are arranged in series and of different and increasing storage capacities makes it possible to ensure continuous operation of the treatment function by electrostatic filtering during use and cooking.

In fact, if the first storage capacity of the first electrostatic filter 72 is saturated, it is possible to continue operation thanks to the second storage capacity of the electrostatic filter 74 arranged downstream of the first electrostatic filter 72.

In addition, there may be provided on the front face of the control unit block 70 indicator lights 71 indicating the saturation of one and / or the other storage capacity of the electrostatic filters in order to allow the user to detect such a state with a view to cleaning the electrostatic filter concerned before the next use on the market.

The control unit 70 may also include an indicator for energizing the assembly, as well as buttons for activating the electrostatic fields of the filters 72 and 74, for controlling the starting of the motor 84, a variable speed drive. 84, etc.

According to a variant use of a processing module according to the invention, and as illustrated in FIG. 12, the "lower >> module 24 can be used as a stand-alone processing module which can be connected by the intermediate 5 of a mouth 51, for example to a conduit or pipe (not shown, for connection itself connected to a cooking installation arranged at a distance from the treatment module to introduce into the latter the air flow to be treated.

Claims (13)

1. Module (24) for the treatment of cooking rejections emitted by a cooking appliance (26) characterized in that it comprises, arranged successively in series: - at least one electrostatic filter (72, 74) for the elimination in particular of smoke and at least one activated carbon filter (98) for the elimination of odors; - a system for forced circulation of the air flow containing the cooking waste through said filters (72, 74, 98); - an orifice (100, 102) for evacuating the air flow having passed through the filters. 2. Module according to claim 1, characterized in that the processing module (24) is a stepped module comprising, arranged in series and superimposed: - a top compartment (32) for treating smoke which is capable of being connected to a source of cooking waste and in which is arranged at least one electrostatic filter (72, 74); and - a bottom compartment (34) for odor treatment which is connected to the top compartment (32) and in which is arranged at least one activated carbon filter (98). 3. Module according to claim 2, characterized in that the forced circulation system of the air flow comprises a fan (80) whose inlet is connected to the upper compartment (32), downstream of at least one electrostatic filter ( 72, 74) and the outlet (88) of which is connected to the bottom compartment (34), upstream of the at least one activated carbon filter (98). 4. Module according to claim 2, characterized in that the fan (80) is a centrifugal fan whose wheel (82) is arranged inside the top compartment (32), and including a motor (84) drive in rotation of the wheel is arranged outside the lower module (24) for processing cooking waste. 5. Module according to claim 2, characterized in that it comprises at least two electrostatic filters (72, 74) which are arranged in series in the upper compartment (32) for treating smoke. 6. Module according to claim 5, characterized in that the two electrostatic filters (72, 74) successively comprise, according to the direction of flow of the air flow, a first electrostatic filter (72) with a first filtration capacity followed by a second electrostatic filter (74) with a second processing capacity greater than the first processing capacity. 7. Module according to claim 6, characterized in that it comprises means (71) for indicating the state of charge of each of the electrostatic filters (72, 74), and means for selective control of one and / or the other of the electrostatic filters (72, 74). 8. Module according to claim 2, characterized in that it comprises at least two activated carbon filters which are arranged in parallel in the bottom compartment (34) for odor treatment. 9. Module according to any one of the preceding claims, characterized in that it comprises means (50, 51) for its connection to a conduit or to a connection pipe, itself connected to a cooking installation arranged at distance from the treatment module to introduce the air flow to be treated into it. 10. Modular assembly for the treatment of cooking rejections emitted by a cooking appliance (26) characterized in that it comprises, vertically superimposed: - an upper module (22) for collecting cooking waste; - And a lower module (24) for processing cooking waste collected by the upper module (22) produced according to any one of the preceding claims. 11. Assembly according to claim 10, characterized in that the upper module (24) for collecting cooking waste comprises: - a box-shaped upper suction hood (28) which has an open inlet face (36) for suctioning cooking waste, in particular through a mesh filter, and a lower face (40) of outlet which is open downwards for the collection of sucked off cooking waste; - A rear box (30) arranged under the upper hood (28) which extends vertically under the upper hood (28), of which an open upper inlet face (44) is connected to the open lower face (40) of outlet of the upper hood (28), and the lower face of which has an opening (50) which is connected to the lower module (24) for processing the collected cooking waste. 12. Assembly according to claim 11, characterized in that the entry face of the upper hood (28) is arranged vertically above a work surface (48) which extends horizontally between the upper modules (22 ) and lower (24) and forward from the rear casing (30) to delimit a free upper face which is in particular capable of receiving a cooking appliance (26). 13. The assembly of claim 11, characterized in that the inlet face of the upper hood is arranged vertically and rearwardly beyond a rear vertical wall of the rear box (30), so as to extend over a cooking appliance (26) disposed adjacent to this rear vertical wall.