MODULAR ASSEMBLY FOR THE TREATMENT OF WASTE ISSUED BY A COOKING APPLIANCE, IN PARTICULAR IN THE FORM OF A TREATMENT TOWER

Abstract

The present invention relates to a modular arrangement (100) for the treatment of waste emitted by an appliance, in particular a cooking appliance, characterized in that it comprises, arranged on the path of a gaseous flow of waste to be treated, a module (14) for electrostatic treatment of fumes which is capable of being connected to a source of waste to be treated and in which are arranged at least three electrostatic filters crossed consecutively by the flow of waste to be treated, and a module (18) for forced circulation of said gaseous flow through said electrostatic filters. Figure for the abstract: 1

Description

Title of the invention: MODULAR ASSEMBLY FOR THE TREATMENT OF WASTE ISSUED BY A COOKING APPLIANCE, IN PARTICULAR IN THE FORM OF A TREATMENT TOWER Technical field of the invention

[0001] The invention relates to a modular assembly, in particular for the treatment of waste from an installation 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 cooking waste comprising in particular fats, fumes, odors and water vapor. Technical background of the invention

[0002] The use of an appliance or installation emitting such discharges, whether for domestic use or use in a public catering establishment, requires management and elimination of the polluting elements contained in the discharges, in particular in order to comply with current hygiene standards, and also for the comfort of users and the neighborhood.

[0003] This involves in particular collecting the grease, and eliminating the fumes and odors in such a way that, at the end of a process of treating the gas flow, in particular an air flow, containing these discharges and polluting elements to be treated, the treated air flow is "clean" and capable of being discharged directly into the atmosphere, to the outside of an enclosed space in which the cooking appliance or installation is located, or else inside the enclosed space itself.

[0004] Currently, kitchen fume purification devices on the market use an activated carbon filtration system, which consists of first collecting the fumes through an extractor hood, then transporting them through a pipe to an activated carbon filtration box to eliminate the fumes before evacuating them outside via an extraction motor.

[0005] Activated carbon particles are materials with a strong adsorption capacity for various odors. Their odor removal capacity can reach 82%. However, before proceeding with odor removal, it is necessary to first filter the fumes and oil particles in the air, otherwise the countless small pores on the surface of the activated carbon particles are enveloped by external greases, which immediately cancels their available adsorption surface and ends their odor adsorption function. Therefore, a pre-filter must be installed in the filter box.

[0006] Currently, in various European countries, a three-stage filtration structure is used, namely a synthetic filter, a high-density polypropylene filter and a high-efficiency synthetic pocket filter. From the point of view of filtration efficiency, it works at the beginning of its use, but after two to three weeks of use, its efficiency decreases considerably, and it is necessary to replace everything after one or two months, especially the first stage of filter must be replaced after two or three weeks. Therefore, such a smoke filtration structure is no longer accepted in the market because, without frequent replacement of filters and activated carbon, it is unusable.

[0007] To date, the most effective method for solving the problem of odor elimination by activated carbon is to use a powerful smoke purification filter of the "electrostatic hypertension" type before entering the activated carbon box.

[0008] Then, the flow passes through the activated carbon filter, which ensures a longer period of effective use and eliminates concerns about cooking fume pollution.

[0009] Currently, some specialized companies recommend the implementation of a stand-alone electrostatic hypertension filter for the elimination of cooking fumes. These products have smoke evacuation flow rates of 2200m3 / h, 4400m3 / h, 6600m3 / h and 8800m3 / h, etc.

[0010] However, their box volume is too large to be suitable for installation in most restaurant premises. In addition, their efficiency in removing fumes from cooking grease or oils is only 85% to 90%, leaving a strong residual odor at the end of treatment.

[0011] It is possible to use two filter boxes in series, but their volume is also bulky; although the filtration effect is improved, such an arrangement cannot completely eliminate grease in the air.

[0012] If a sudden failure of the electronic field causes the installation to temporarily shut down, this results in temporary surface contamination of the activated carbon particles. This contamination then considerably reduces the odor adsorption capacity of the activated carbon, thus shortening its service life.

[0013] To this end, for example in document FR3068116A1, a modular assembly has already been proposed comprising, arranged along the path of a gaseous flow of waste to be treated: - an electrostatic smoke treatment module which is capable of being connected to a source of discharges to be treated and in which are arranged two electrostatic filters known as “hypertension” which are crossed consecutively by the flow of discharges to be treated; - and a system for forced circulation of said gas flow through these two electrostatic filters.

[0014] A first electrostatic filter has a first processing capacity, and the second electrostatic filter has a second processing capacity.

[0015] The electrostatic filters are adjacent and thus, an air flow to be treated successively passes through the first electrostatic filter then the second electrostatic filter. According to the proposed design, the gas flow to be treated successively undergoes three filtration stages, through a mesh filter allowing in particular the mechanical filtering of greases, the two electrostatic filters, and finally a group of carbon filters.

[0016] The design proposed in this document has several drawbacks.

[0017] In particular, the use of two electrostatic filters arranged in series does not reliably and sufficiently ensure continuous operation of the electrostatic filtering treatment function during use and cooking. Indeed, if the storage capacity of one filter is saturated, it may be impossible to continue operation using only the storage capacity of the other electrostatic filter because this may prove insufficient and then require stopping cooking activities.

[0018] The same applies in the event of failure of the power supply to one and / or the other of the two electrostatic filters.

[0019] Furthermore, the spatial arrangement of the various sub-assemblies or processing modules is cumbersome and not easily adaptable, particularly depending on the premises to be equipped and the space available for this purpose.

[0020] The invention aims to propose an improved design of a modular assembly which makes it possible to resolve all or part of the problems inherent in designs according to the prior art.

[0021] The invention aims in particular to propose a processing module which is as efficient as possible both from the point of view of the result and its daily management, particularly with regard to its regular maintenance in order to maintain its performance. Summary of the invention

[0022] The invention proposes a modular assembly for the treatment of waste emitted by an appliance, in particular a cooking appliance,

[0023] characterized in that it comprises, arranged on the path of a gaseous flow of discharges to be treated: - an electrostatic fume treatment module which is capable of being connected to a source of discharges to be treated and in which at least three electrostatic filters are arranged, through which the flow of discharges to be treated passes consecutively; - and a module for forced circulation of said gas flow through said electrostatic filters.

[0024] Such a smoke purifier with at least three levels with three electrostatic hypertension filters, which uses for example three groups of independent electrostatic electrode modules in a single box, operating autonomously. This configuration makes it possible to obtain a compact structure, easy to install and which effectively and reliably meets the operating requirements of the activated carbon arranged downstream for the elimination of smoke and odors.

[0025] According to other characteristics of the invention: - each electrostatic filter is electrically powered independently of each of the other electrostatic filters; - the electrostatic smoke treatment module has an elongated structure, in particular of parallelepiped shape, comprising two opposite end faces including: • a first end face which constitutes an inlet face for the flow to be treated; • a second end face which constitutes an outlet face for the flow to be treated,

[0026] and the electrostatic fume treatment module is arranged horizontally or vertically; - the electrostatic fume treatment module is arranged vertically within a modular assembly in the form of a discharge treatment tower comprising an inlet for said flow which is arranged in the lower part of the tower; - the modular arrangement is arranged horizontally in the upper part of a motor vehicle equipped with a device emitting a flow of waste to be treated; - the electrostatic smoke treatment module is arranged horizontally above the roof of the front driving cabin of a utility motor vehicle, in particular a food distribution vehicle equipped with a cooking appliance emitting emissions to be treated; - arranged downstream of the electrostatic smoke treatment module, for the elimination of odors, the arrangement comprises at least one activated carbon filter, or at least two activated carbon filters which are arranged in parallel or in series in an odor treatment housing; - the modular assembly for the treatment of waste is arranged horizontally in the lower part of an autonomous and mobile cooking station, below a work surface itself arranged below an upper suction hood belonging to the cooking station and the outlet of which is connected to a entrance to the modular unit for waste treatment. each carbon filter is a cartridge which extends horizontally inside said odor treatment housing, one free end of which is removably fixed to a plate of said housing and the other free end of which extends cantilevered inside said housing, and in that said housing is provided with a cartridge support stand which cooperates with said other free end of the cartridge; upstream of the first electrostatic filter crossed by said flow, the modular treatment assembly comprises a mechanical pre-filter, for example a stainless steel mesh pre-filter, capable of retaining particles with a size between 10 microns and 100 microns; it comprises a distributor of the gaseous flow of discharges to be treated over the entire flow inlet surface of a mechanical pre-filter arranged upstream of the first electrostatic filter crossed by the gaseous flow of discharges to be treated; the distributor comprises at least one distribution partition dividing the gaseous flow of discharges to be treated into at least two flow parts, each of which is directed towards an associated portion of the inlet surface of the mechanical pre-filter, the distribution into parts or layers of flow taking place before the turn, in the horizontal direction of the flow. ; each conductive plate belonging to an electrostatic filter is coated with a layer of electroconductive epoxy resin; each conductive plate belonging to an electrostatic filter is coated with gold or copper nanoparticles, upstream of the electrostatic treatment module, the arrangement is associated with a device for at least partial elimination of the water vapor and / or water droplets contained in the gaseous flow of discharges to be treated, in particular a dynamic separator by centrifugation and / or by dynamic condensation; successively according to the direction of flow of the air flow, the at least three electrostatic filters have increasing filtration capacities; the assembly comprises means for indicating the voltage and current for each of the electrostatic filters, and means for selectively controlling each of the electrostatic filters; the arrangement comprises means for its connection to a conduit or a connecting pipe, itself connected to a device emitting discharges to be treated, in particular to a cooking installation, arranged at a distance from the modular treatment assembly to introduce the gaseous flow of discharges to be treated into the modular assembly. Brief description of the figures

[0027] Other characteristics and advantages of the invention will appear during the reading of the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:

[0028] [Fig-1] [Fig.l] is a schematic perspective view of a modular assembly in the form of a discharge treatment tower;

[0029] [Fig.2] [Fig.2] is a partial sectional view through a vertical and longitudinal plane of the modular assembly illustrated in [Fig.l];

[0030] [Fig.3] [Fig.3] is a detailed perspective and partially exploded view of the lower part of the assembly

[0031] [Fig.4] [Fig.4] is a schematic perspective view of the electrostatic fume treatment module of the modular assembly illustrated in [Fig.l] which is shown with its connection module in the open position;

[0032] [Fig.5] [Fig.5] is a perspective view of an electrostatic fume treatment module of a modular assembly of the type intended to be arranged horizontally;

[0033] [Fig.6] [Fig.6] is a diagram illustrating the design principle of an electrostatic fume treatment module with three electrostatic filters arranged in series;

[0034] [Fig.7] [Fig.7] is a perspective view from above of an exemplary embodiment of a dynamic centrifugal separator;

[0035] [Fig.8] [Fig.8] is an exploded perspective view of the main components of the dynamic separator illustrated in [Fig.6];

[0036] [Fig.9] [Fig.9] is a schematic representation of a first example of the installation of a modular treatment unit in the form of a tower in a facility for purifying the waste from a cooking facility;

[0037] [Fig. 10] [Fig. 10] is a representation similar to that of [Fig.9] illustrating a design variant with another positioning of the activated carbon cartridge box;

[0038] [Fig. 11] [Fig. 11] is a schematic representation of a second example of horizontal installation of a modular waste treatment unit in a cooking installation;

[0039] [Fig. 12] [Fig. 12] is a representation similar to that of [Fig.l 1] illustrating a design variant with another positioning of the activated carbon cartridge box and the forced circulation system of said gas flow of the modular treatment assembly;

[0040] [Fig. 13] [Fig. 13] is a representation similar to that of [Fig.l 1] illustrating a design variant with another positioning of the modular assembly of treatment below cooking appliances;

[0041] [Fig. 14] [Fig. 14] is a schematic representation of the implantation of a modular treatment unit horizontally in the upper part of a motor vehicle equipped with a cooking appliance emitting a flow of waste to be treated;

[0042] [Fig. 15] [Fig. 15] is a schematic side view in partial section of the vehicle illustrated in [Fig. 14];

[0043] [Fig. 16] [Fig. 16] is a schematic front and partial sectional view of the vehicle shown in [Fig. 14];

[0044] [Fig. 17] [Fig. 17] is a schematic representation of the implantation of a modular horizontal treatment unit in the lower part of an autonomous and mobile cooking station;

[0045] [Fig. 18] [Fig. 18] is a partial perspective view which represents a box of filtration with horizontal activated carbon cartridges equipped with cartridge holding supports;

[0046] [Fig. 19] [Fig. 19] is a perspective and transparent view of two se dynamic centrifugal parators of the type illustrated in figures 7 and 8 which are arranged in a module or box. Detailed description of the invention

[0047] For the description of the invention and the understanding of the claims, the vertical, longitudinal and transverse orientations according to the V, L, T reference system indicated in the figures, the longitudinal L and transverse T axes of which extend in a horizontal plane, will be adopted without limitation and with reference to Earth's gravity.

[0048] In the following description, identical, similar or analogous elements will be designated by the same reference numbers.

[0049] [Fig.l] shows a modular assembly 100 for the treatment of waste emitted by an appliance, in particular a cooking appliance, which here has the general shape of a tower, that is to say of the type in which the main sub-assemblies or modules are at least partially arranged vertically above each other along the axis V.

[0050] Here, from bottom to top - depending on the direction of flow of the waste stream to be treated - the modular assembly 100 comprises: - a distributor 10 of the gas flow of discharges to be treated; - a mechanical filtration module 12, also called a filter or pre-filter mechanical, capable of retaining particles of a size which is for example between 10 microns and 100 microns; - an electrostatic fume treatment module 14 in which three electrostatic filters are arranged, through which the flow of discharges to be treated passes consecutively; - an activated carbon filtration module 16, or activated carbon filter, which here comprises eleven activated carbon cartridges or filters which are arranged vertically and in parallel to ensure the treatment of odors; - a module or system 18 for forced circulation of the gas flow through the modular assembly 100, and in particular through the electrostatic filters of the electrostatic smoke treatment module 14.

[0051] The module 18 comprises for example an extraction motor 20 by means of which the gas flow to be treated, which enters through the inlet 22 of the distributor 10, passes through the modular assembly 100 to exit in the form of a purified air flow through the outlet 24.

[0052] The modular assembly 100 has a general rectangular parallelepiped shape with a substantially square section.

[0053] Each module has a similar shape.

[0054] In this tower-shaped design, the modular assembly rests on the ground by a set of feet 26 between which the distributor 10 is housed.

[0055] As can be seen in Figures 1, 2 and 3, the distributor 10 is in the form of a conduit 30 whose inlet face 22 extends in a vertical and longitudinal plane and whose upper outlet face 28 of square section extends in a horizontal plane.

[0056] In order to ensure the distribution of the incoming gas flow over the entire surface of the outlet face 28, and therefore of the adjacent inlet face 29 of the mechanical prefilter 12, the conduit 30 is here divided into three parts by two parallel internal partitions 34.

[0057] The mechanical filtration module 12 which is immediately adjacent to the open upper outlet face 28 of the distributor 10 is in the form of a box 36 whose upper outlet face 38 is open and which comprises an open vertical lateral face 40 to allow the installation and extraction of the mechanical filter itself 42 which is in the form of a drawer sliding in the horizontal plane, thus facilitating in particular maintenance operations.

[0058] For the treatment of grease or oil fume particles, a mechanical filter with S-shaped meshes has a high filtration efficiency and a low pressure drop, exceeding by one to two times the filtration efficiency of conventional mesh filters. Its filtration efficiency for oils and greases is 60% higher.

[0059] This filter can retain the largest dust and deposit particles with a size of 10 microns to 100 microns. When they pass through the concave and convex parabola-shaped surfaces of the filter, these particles are trapped and this reduces the charge on the electrostatic field subsequently crossed, thanks to which the collector plates thus allowing a longer service life compared to other similar products.

[0060] The upper open outlet face 38 is adjacent to the lower inlet face 50 of the electrostatic fume treatment module 14, the upper outlet face 52 of which is adjacent to the housing of the activated carbon filtration module 16.

[0061] In a known manner, the activated carbon filtration module 16 comprises a plurality of cartridges 44 which are arranged in a removable manner in a housing 46 comprising a plate 47 for bayonet mounting of the cartridges 44 and penetration of the distributed gas flow inside the different cartridges 44.

[0062] Filtration is carried out using tubular cylindrical cartridges 44 with metal mesh filled with activated carbon.

[0063] The air filtered by each tubular cartridge 44 exits, through the cylindrical mesh side wall, into the housing 46 from which it then exits through the open upper face 48 through which it is sucked in by the module 18 for forced circulation of the gas flow through the assembly 100.

[0064] The odorous molecules of various families present in the gas flow to be treated have a size that is too small, generally less than 2.5 microns, and they cannot be adsorbed by the electrostatic field when passing through the module 14.

[0065] Therefore, it is necessary to filter again through activated carbon to adsorb and eliminate them completely, in order to obtain purified and odorless air.

[0066] The lifespan of activated carbons is on average ten to twelve months, without having to replace them in the meantime. The dimensions and characteristics of the module vary depending on the volume of air to be treated.

[0067] Each cartridge 44 contains, for example, 3 kg of activated carbon. One cartridge allows the treatment of a maximum air flow rate of 280 m3 / h. It is therefore necessary to determine the number of cartridges required according to the flow rate of the gas stream to be treated.

[0068] When the activated carbon cartridges 44 are placed vertically, the replacement of the latter is facilitated and the sealing at the inlet mouth of each cartridge is better.

[0069] If cartridges 44 are installed horizontally (see for example figures 11 and 12), they extend cantilevered from the plate 47 and it is preferable to arrange in the housing 46 a support (not shown in the figures) in the form of a stand 49 for holding each cartridge 44, in particular to guarantee good sealing at the joint at the inlet or mouth of each cartridge (see [Fig.18]).

[0070] Such a support, or crutch 49, which is arranged and fixed by a screw 51, to support each cartridge at its free end in overhang ensures a good condition of the seals by preventing them from being deformed by gravity and vibrations. The absence of such a support can cause air leaks and results in poor odor filtration results.

[0071] As a variant, and in particular if the available height is not sufficient for its ins installation, the activated carbon filtration module 16 can be placed downstream of the outlet of the forced gas flow circulation module 18, thus ensuring better acoustic results at the outlet.

[0072] With reference in particular to figures 4 to 6, the design of the electrostatic fume treatment module 14 will now be described, in which three electrostatic filters are arranged, through which the flow of discharges to be treated passes consecutively.

[0073] The design of the module 14 is generally identical whether it is arranged vertically or horizontally ([Fig.5]).

[0074] The electrostatic fume treatment module 14 has an elongated structure, of rectangular parallelepiped shape, comprising two opposite functional end faces, including a first end face 50 which constitutes the inlet face of the gas flow to be treated which passes through this module 14, and a second end face which constitutes the outlet face 52 of the gas flow to be treated.

[0075] When the module 14 is arranged vertically, the parallel input 50 and output 52 faces are horizontal, while they are vertical when the module 14 is arranged horizontally.

[0076] The electrostatic smoke treatment module 14 here comprises three electrostatic filters arranged consecutively and crossed in series by the gas flow to be treated.

[0077] Alternatively, the module may, if necessary, include four electrostatic filters arranged consecutively for even greater efficiency.

[0078] Each module 14 is in the form of a box 56 comprising an open side face 58 giving access to three housings 59P, 59S and 59T each housing respectively one of the three electrostatic filters, or high-voltage electrostatic field filters, which successively comprise - depending on the direction of passage of the module 14 - a primary filter 60P, a secondary filter 60S and a tertiary filter 60T.

[0079] The open side face 58 is here closed by two adjacent hinged doors 62A and 62B, each of which includes means 63 allowing the electrical connection and power supply of the different filters 60P, 60S and 60T.

[0080] The external face of each door 62A, 62B is itself closed by an associated hinged cover 64A, 64B which allows access to the components and elements 65 necessary for the electrical power supply of each filter 60P, 60S, 60T which are arranged in the internal volume of the doors 62A and 62B.

[0081] Each filter and associated electrostatic field has an independent power supply.

[0082] Thus, the operation of each electrostatic filter 60P, 60S, 60T does not affect that of another filter. If one fails, it does not affect the operation of the other filters which can continue to operate.

[0083] In this way, it is also possible to obtain a smoke filtration rate sufficient and satisfactory, without causing short-term pollution of the activated carbon used in the filtration module 14.

[0084] Although it is a three-stage filtration box, the volume of the box 56 is particularly reduced and its overall size is shorter than the same type of two-stage filtration box.

[0085] Its main length is approximately 110 cm. Its installation is suitable for small professional premises such as restaurants.

[0086] With reference to the schematic representation of [Fig.6], downstream of the mechanical prefilter 12, each filter 60P, 60S, 60T comprises a positive needle electrode 61 (15kV), a negative plate electrode 66 (0V), a light electron hypertension field 68, a positive electrode panel 72 (7kV), a negative electrode panel 70 (0V), and a medium voltage electrostatic field 74.

[0087] After such a smoke extraction process cycle, the best smoke extraction rate according to the state of the art is exceeded, which is between 90% and 95%.

[0088] For example, if there are 100 g / m3 of smoke particles in the air, 5 g / m3 remain after passing through the first 60P filter; after the second 60S filter, 0.25 g / m3 remain and the smoke extraction rate is 99.75%.

[0089] Thanks to the third 60T filter, only 0.0125 g / m3 remains, thus achieving an overall smoke extraction rate of 99.9875%.

[0090] The electrode plates are, for example, coated with a layer of copper or gold nanoparticles. The oil or grease fume particles are automatically detached, which extends the service life by approximately two to three months, more than three times longer than ordinary aluminum electrode plates.

[0091] Electroconductive epoxy resin coating technology can also be used.

[0092] The traditional electrode plate is made of an aluminum alloy plate called aviation aluminum. Under the action of high-voltage electrostatic fields of 16kV and 8.6kV, the surface will oxidize. The best service life of ordinary electrode plates is only six to nine months. Once this time is exceeded, the purification rate drops. Chemical cleaning is then necessary. After numerous cleanings, replacement is necessary every three years.

[0093] Thanks to the electrode plates manufactured using the new electroconductive epoxy resin coating technology, grease does not adhere to the water-resistant surface. Oil or grease droplets detach automatically without sticking, and the plates maintain the best electrical conductivity and corrosion resistance for a long time. This saves consumables and significantly reduces the number of cleanings, making maintenance and upkeep easier. The lifespan of electrostatic filters can reach three to five years.

[0094] Depending on the on-site installation requirements, the electrostatic fume filtration module 14 is available in several types, for example with air inlet on the left, with air inlet on the right and - in a vertical position - with air inlet from below.

[0095] A gas flow equalization plate may need to be installed at the gas flow inlet, and its position varies depending on the type of module chosen.

[0096] As a supplement, a control box may be provided on the front face of the box, indicator lights indicating the saturation of one and / or the other of the storage capacities of the three 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 marketing use.

[0097] The control unit may also include a power-on indicator for the assembly, as well as buttons for activating the electrostatic fields of the 60P, 60S, 60T filters, for controlling the start-up of the extraction motor, a speed variator for the extraction motor, etc.

[0098] More particularly, the modular arrangement comprises means for indicating the state of charge of each of the electrostatic filters, and means for selectively controlling each of the electrostatic filters.

[0099] Depending on the nature and composition of the effluents to be treated and purified, their humidity level may be very high - for example in the case of cooking vapors - and the humidity they contain may harm the correct and efficient operation of the electrostatic treatment module 14.

[0100] In order to remedy this problem, it is proposed - upstream of the electrostatic treatment module 14 - to associate with the modular arrangement 100 a device for at least partial elimination of the water vapor and / or water droplets contained in the gaseous flow of discharges to be treated.

[0101] Such a device can be arranged at any point along the path traveled by the effluents to be treated before reaching the module 14, and for example upstream of the inlet 22 in the distributor 10.

[0102] It may be a dynamic centrifugal separator and / or a dynamic condensation separator.

[0103] Figures 7 and 8 show an example of the design of a dynamic centrifugal separator 80.

[0104] In [Fig.7], the separator 80 is shown in its functional position with its lower recovery shell 82 in a horizontal position with its conduit 84 for discharging the recovered liquid condensate oriented vertically and opening downwards.

[0105] The lower shell 82 has a central hole 83 for the flow to pass through gaseous.

[0106] The centrifugation phenomenon causing dynamic condensation is obtained by means of a centrifugation wheel or propeller 86 which is driven in rotation at high speed by a motor 88.

[0107] The propeller 86 rotates inside an upper cylindrical cage 88 which is open upwards to allow the passage of the gas flow.

[0108] The propeller 86 centrifuges the gas flow inside the cage 88 and the condensate formed along the internal cylindrical face 90 of the cage 88 falls into the lower shell 82.

[0109] [Fig. 19] is a perspective and transparent view of two dynamic centrifugal separators 80 which are arranged in parallel in a module or box 81.

[0110] [Fig.9] shows a first example of the installation of a modular treatment unit 100 in the form of a vertical tower in a facility for purifying waste from a cooking facility.

[0111] The modular assembly 100 is represented there in a simplified schematic manner.

[0112] The gas flow to be treated is collected by a hood 102 arranged in the room, for example above the cooking appliances, which a first conduit 104 connects to the inlet in the lower part of the modular assembly 100.

[0113] A second conduit 105 connects the output of the forced circulation module 18 to an isolated output 106 of the premises.

[0114] [Fig. 10] shows a variant of the example of [Fig. 9] in which the activated carbon filtration module 16 is not part of the tower-shaped modular arrangement 100, but is here offset downstream of the outlet of the module 18 for forced circulation of the gas flow through the assembly 100.

[0115] [Fig. 1 1] shows a first example of the installation of a modular treatment unit 100 which is arranged horizontally in an installation for purifying the waste from a cooking installation.

[0116] According to a variant not shown, the arrangement 100 can be arranged horizontally directly above the hood 102.

[0117] [Fig. 12] shows a variant of the layout of [Fig. 10] in which the module 18 for forced circulation of the gas flow through the assembly 100 on the one hand, and the module 16 for activated carbon filtration are arranged successively in this order and are separated from the other modules of the modular arrangement 100.

[0118] [Fig. 13] shows another variant of the “horizontal” layout of [Fig. 10] in which the modular arrangement 100 is arranged horizontally below the cooking appliances 106.

[0119] Figures 14 to 16 partially show the upper front part of a motor vehicle 200 which is internally equipped (See [Fig.15]) with a cooking appliance 202 emitting a flow of waste to be treated.

[0120] This is for example a food preparation and distribution vehicle equipped with a cooking appliance 202.

[0121] The vehicle 200 comprises a front part or driver's cab 204 which is delimited towards the front by a windshield 206 and towards the top by a roof portion or roof 208.

[0122] A modular assembly 100 of the type described above is arranged horizontally, in the transverse direction of the vehicle 200, above the roof 208 of the front driving cabin 204.

[0123] This installation is made possible thanks to the very great compactness of the modular assembly 100.

[0124] A vehicle 200 thus equipped can thus be installed in any authorized location and operate without producing any unauthorized discharge or any odor.

[0125] [Fig. 17] shows another example of implementation and installation of a modular assembly 100 for the treatment of waste allowing the creation of an autonomous and mobile cooking station 300 with very high capacity for filtering odors and fumes.

[0126] The modular assembly 100 is arranged horizontally in the lower part of the autonomous and mobile cooking station 300, below a horizontal work surface 302.

[0127] In the upper part and above the work surface 302, the mobile station 300 comprises a suction hood 102 whose outlet is connected by a vertical lateral conduit 102 to an inlet of the modular assembly 100 for the treatment of waste.

[0128] In the lower part, the conduit 102 can integrate a distributor as described previously.

[0129] To limit the length of the modular assembly 100, the activated carbon and horizontal cartridge filtration module 16 is arranged below the electrostatic filtration module 14 and the module 18 for forced circulation of the gas flow through the electrostatic filters.

[0130] To provide the best possible mobility to the cooking station 300, it can be designed in the form of a rolling cart 304.

[0131] Such a cooking station can in particular be used in catering as a mobile cooker for the preparation and sale of cooked dishes.

[0132] It is equipped with a very powerful modular smoke extraction and odor elimination unit, which allows for a real absence of odors and environmental pollution.

[0133] It can be used for high temperature cooking, frying, steaming, etc.

[0134] It offers the opportunity to cook in front of customers, and to present culinary skills in a lively way.

[0135] In addition, this cooking station can be used by small restaurants that do not have a general integrated smoke extraction and odor elimination system.

[0136] Its installation is simple as it can be placed anywhere, offering a mobile cooking solution both indoors and outdoors.

[0137] Its design allows for compliance with hygiene standards, thus offering greater flexibility to restaurant owners for their business activity projects.

[0138] The installation of this product only requires a connection to an electrical supply network and a flexible sheath for evacuating the gas flow after treatment which must here be connected to the outlet of the activated carbon filtration module 12.

Claims

Claims

1. Modular assembly (100) for the treatment of waste emitted by an appliance, in particular a cooking appliance, characterized in that it comprises, arranged on the path of a gaseous flow of waste to be treated: - a module (14) for electrostatic treatment of fumes which is capable of being connected to a source of waste to be treated and in which are arranged at least three electrostatic filters (60P, 60S, 60T) crossed consecutively by the flow of waste to be treated; - and a module (18) for forced circulation of said gaseous flow through said electrostatic filters (60P, 60S, 60T).

2. Modular assembly (100) for the treatment of waste according to claim 1, characterized in that each electrostatic filter (60P, 60S, 60T) is electrically powered independently of each of the other electrostatic filters.

3. Modular assembly (100) for the treatment of discharges according to claim 1, characterized in that the module (14) for electrostatic treatment of fumes has an elongated structure, in particular of parallelepipedal shape, comprising two opposite end faces including: - a first end face (50) which constitutes an inlet face for the gas flow to be treated; - a second end face (52) which constitutes an outlet face for the gas flow to be treated, and in that the module (14) for electrostatic treatment of fumes is arranged horizontally or vertically.

4. Modular assembly (100) for the treatment of waste according to claim 3, characterized in that the electrostatic fume treatment module (14) is arranged vertically within a modular assembly (100) in the form of a waste treatment tower comprising an inlet (22) for said flow which is arranged in the lower part of the tower.

5. Modular assembly (100) for the treatment of waste according to claim 3, characterized in that the electro-treatment module (14) static smoke is arranged horizontally in the upper part of a motor vehicle (200) equipped with a cooking appliance (202) emitting a flow of emissions to be treated.

6. Modular assembly (100) for the treatment of waste according to claim 5, characterized in that it is arranged horizontally above the roof (208) of the front cabin (204) for driving a utility motor vehicle (200), in particular a food distribution vehicle equipped with a cooking appliance (202) emitting waste to be treated.

7. Modular assembly (100) for the treatment of discharges according to any one of the preceding claims, characterized in that, arranged downstream of the electrostatic smoke treatment module (14), for the elimination of odors, it comprises at least one activated carbon filter (44), or at least two activated carbon filters which are arranged in parallel or in series in an odor treatment housing (46).

8. Modular assembly (100) for the treatment of waste according to claim 3, characterized in that it is arranged horizontally in the lower part of an autonomous and mobile cooking station (300), below a work surface (302) itself arranged below an upper suction hood (102) belonging to the cooking station (300) and the outlet of which is connected to an inlet of the modular assembly (10) for the treatment of waste.

9. Modular assembly (100) according to claim 7, characterized in that each carbon filter is a cartridge (44) which extends horizontally inside said odor treatment housing (46), one free end of which is fixed in a removable manner on a plate (47) of said housing (46) and the other free end of which extends cantilevered inside said housing, and in that said housing is provided with a support stand (49) for the cartridge (44) which cooperates with said other free end.

10. Modular assembly (100) for the treatment of waste according to any one of the preceding claims, characterized in that, upstream of the first electrostatic filter (60P) crossed by said flow, the modular treatment assembly (100) comprises a mechanical pre-filter (12) capable of retaining particles with a dimension between 10 microns and 100 microns.

11. Modular assembly (100) according to the preceding claim, characterized in that it comprises a distributor (10) of the gaseous flow of discharges to be treated over the entire flow inlet surface of a mechanical pre-filter (12) arranged upstream of the first electrostatic filter (60P) crossed by the gaseous flow of discharges to be treated.

12. Assembly according to the preceding claim, characterized in that the distributor (10) comprises at least one distribution partition (34) dividing the gas flow of discharges to be treated into at least two flow parts, each of which is directed towards an associated portion of the inlet surface of the mechanical prefilter (12).

13. Modular assembly (100) for the treatment of waste according to any one of the preceding claims, characterized in that, upstream of the electrostatic treatment module (14), it is associated with a device (80) for at least partial elimination of the water vapor and / or water droplets contained in the gaseous flow of waste to be treated, in particular a dynamic separator by centrifugation and / or dynamic condensation.

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