MODULAR ASSEMBLY FOR THE TREATMENT OF WASTE EMITTED BY A COOKING APPLIANCE, PARTICULARLY IN THE SHAPE OF A TREATMENT TOWER

Abstract

The present invention relates to a modular arrangement (100) for treating emissions from an appliance, particularly a cooking appliance, characterized in that it comprises, arranged along the path of a gaseous flow of emissions to be treated, an electrostatic fume treatment module (14) adapted to be connected to a source of emissions to be treated and comprising at least three electrostatic filters through which the flow of emissions to be treated passes consecutively, and a forced circulation module (18) for said gaseous flow through said electrostatic filters. Figure for the abstract: 1

Description

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

[0001] The invention relates to a modular assembly in particular for the treatment of emissions from a food cooking installation of the type comprising a cooking unit, such as for example a grill, a barbecue, or a griddle which emits into the surrounding atmosphere cooking emissions including fats, fumes, odors and water vapor. Technical background of the invention

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

[0003] This includes collecting grease and eliminating fumes and odors in such a way that, at the end of a gas stream treatment process, in particular an air stream containing these emissions and pollutants to be treated, the treated air stream is "clean" and suitable for being discharged directly into the atmosphere, to the outside of an enclosed space in which the cooking appliance or installation is located, or inside the enclosed space itself.

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

[0005] Activated carbon particles are materials with a high adsorption capacity for various odors. Their odor removal capacity can reach 82%. However, before proceeding with odor removal, it is necessary to first filter fumes and oil particles from the air; otherwise, the countless tiny pores on the surface of the activated carbon particles become coated with external grease, which immediately negates their available adsorption surface and ends their odor-absorbing function. Therefore, a pre-filter must be installed in the filtration unit.

[0006] Currently, in various European countries, a three-stage filtration system is used, namely a synthetic filter, a high-density polypropylene filter, and a high-efficiency synthetic bag filter. From a filtration efficiency standpoint, this system works well initially, but after two to three weeks of use, its effectiveness decreases considerably, and it becomes necessary to replace the entire system after one or two months; in particular, the first filter stage must be replaced after two or three weeks. Consequently, such a fume filtration system is no longer accepted on the market because, without frequent replacement of the filters and activated carbon, it is unusable.

[0007] To date, the most effective method for solving the problem of odor removal by activated carbon consists of using a powerful fume purification filter of the "electrostatic hypertension" type before entering the activated carbon box.

[0008] Next, 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 self-contained electrostatic precipitator for the removal of cooking fumes. These products have fume extraction rates of 2200 m³ / h, 4400 m³ / h, 6600 m³ / h and 8800 m³ / h, etc.

[0010] However, their chamber volume is too large to be suitable for installation in most restaurant premises. Furthermore, their efficiency in removing cooking grease or oil fumes is only 85% to 90%, leaving a strong residual odor at the end of the 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 shut down temporarily, 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 lifespan.

[0013] To this end, for example in document FR3068116A1, a modular assembly has already been proposed comprising, arranged along the path of a gaseous discharge stream to be treated: - an electrostatic flue gas treatment module that is suitable for connection to a source of emissions to be treated and in which two filters are arranged electrostatics known as "hypertension" which are crossed consecutively by the flow of waste to be treated; - and a system for forcing the 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 airflow to be treated passes successively through the first electrostatic filter and then the second electrostatic filter. According to the proposed design, the gaseous flow to be treated undergoes three successive filtration stages: first, through a mesh filter, which allows for the mechanical filtration of grease; then through the two electrostatic filters; and finally through a group of carbon filters.

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

[0017] In particular, using two electrostatic filters arranged in series does not reliably and sufficiently ensure continuous operation of the electrostatic filtering 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, as this may prove insufficient and thus necessitate stopping the 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] Moreover, the arrangement in space of the different sub-assemblies or processing modules is cumbersome and not easily adaptable, particularly depending on the room 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 solve all or part of the problems inherent in designs according to the prior art.

[0021] The invention aims in particular to provide a processing module which is as efficient as possible both in terms of the result and its day-to-day management, in particular 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 along the path of a gaseous discharge stream to be treated: - an electrostatic fume treatment module which is suitable for connection to a source of emissions to be treated and in which are arranged at least three electrostatic filters through which the flow of emissions to be treated passes consecutively; - and a forced circulation module for said gas flow through said electrostatic filters.

[0024] Such a fume purifier has at least three stages with three electrostatic precipitating filters, which uses, for example, three groups of independent electrostatic electrode modules in a single housing, 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 removal of fumes and odors.

[0025] According to other features of the invention: - each electrostatic filter is electrically powered independently of each of the other electrostatic filters; - The electrostatic fume treatment module has an elongated structure, specifically a parallelepiped shape, comprising two opposite end faces, including: • a first end face which constitutes an inlet face of 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 an emissions 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 fume treatment module is arranged horizontally above the roof of the front driver's cab 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 fume treatment module, for the elimination of odors, the arrangement includes 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 box; The modular waste treatment unit is arranged horizontally in the lower part of a self-contained, mobile cooking station, below a work surface which is itself arranged below an upper extraction hood belonging to the cooking station and whose outlet is connected to an inlet of the modular waste treatment unit. each carbon filter is a cartridge which extends horizontally inside said odor treatment unit, one free end of which is detachably fixed to a plate of said unit and the other free end of which cantilevers inside said unit, and in that said unit is provided with a cartridge support bracket which cooperates with said other free end of the cartridge; upstream of the first electrostatic filter through which said flow passes, the modular treatment assembly includes 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 includes a distributor of the gaseous discharge flow to be treated over the entire flow inlet surface of a mechanical pre-filter arranged upstream of the first electrostatic filter through which the gaseous discharge flow to be treated passes; The distributor includes at least one distribution partition dividing the gaseous discharge flow 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 bend, in the horizontal direction of the flow. Each conductive plate belonging to an electrostatic filter is coated with a layer of electro-conductive 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 removal of water vapor and / or water droplets contained in the gaseous flow of discharges to be treated, in particular from a dynamic separator by centrifugation and / or by dynamic condensation; successively according to the direction of airflow, the at least three electrostatic filters have increasing filtration capacities; the assembly includes 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 includes means for its connection to a conduit or connecting pipe, itself connected to an appliance emitting waste to be treated, in particular to a cooking installation, arranged at a distance from the modular treatment unit to introduce the gaseous flow of waste to be treated into the modular unit. Brief description of the figures

[0027] Other features and advantages of the invention will become apparent upon reading the detailed description that follows, for an understanding of which reference should be made to the accompanying drawings in which:

[0028] [Fig-1] Fig. 1 is a schematic perspective view of a modular assembly shaped like a waste treatment tower;

[0029] [Fig.2] The [Fig.2] is a partial cross-sectional view by a vertical and longitudinal plane of the modular assembly illustrated in the [Fig.1];

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

[0031] [Fig.4] The [Fig.4] is a schematic perspective view of the electrostatic fume treatment module of the modular assembly illustrated in the [Fig.1] which is shown with its connection module in the open position;

[0032] [Fig.5] The [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] The [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] The [Fig.7] is a top perspective view of an example of an embodiment of a dynamic separator by centrifugation;

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

[0036] [Fig.9] The [Fig.9] is a schematic representation of a first example of the implementation of a modular tower-shaped treatment unit in a waste purification installation for a cooking installation;

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

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

[0039] [Fig. 12] The [Fig. 12] is a representation analogous to that of the [Fig. 11] 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] The [Fig. 13] is a representation analogous to that of the [Fig. 11] illustrating a design variant with another positioning of the modular processing assembly below the cooking appliances;

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

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

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

[0044] [Fig. 17] The [Fig. 17] is a schematic representation of the horizontally arranged modular processing unit in the lower part of a self-contained and mobile cooking station;

[0045] [Fig. 18] The [Fig. 18] is a partial perspective view which represents a horizontal activated carbon cartridge filtration unit equipped with cartridge support brackets;

[0046] [Fig. 19] Fig. 19 is a perspective and transparency view of two dynamic centrifugal separators of the type illustrated in Figs. 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 frame indicated in the figures will be adopted without limitation and with reference to Earth's gravity, whose longitudinal L and transverse T axes extend in a horizontal plane.

[0048] In the description that follows, identical, similar or analogous elements will be designated by the same reference numerals.

[0049] Figure 1 shows a modular assembly 100 for the treatment of waste emitted by an appliance, in particular a cooking appliance, which is here in the general form of a tower, that is to say of the type in which the main sub-assemblies or modules are at least partially arranged vertically one above the other along the axis V.

[0050] Here, from bottom to top - according to the direction of flow of the waste stream to be treated - the modular assembly 100 comprises: - a distributor 10 of the gaseous discharge flow to be treated; - a mechanical filtration module 12, also called a mechanical filter or pre-filter, capable of retaining particles with a size which is for example between 10 microns and 100 microns; - a module 14 for electrostatic treatment of fumes in which three electrostatic filters are arranged, through which the flow of emissions to be treated passes consecutively; - a module 16 of activated carbon filtration, or activated carbon filter, which here comprises eleven cartridges or activated carbon 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 module 14 for electrostatic treatment of fumes.

[0051] Module 18 includes, for example, an extraction motor 20 through which the gas flow to be treated, which enters through the inlet 22 of the distributor 10, passes through the modular assembly 100 and exits as a purified air flow through the outlet 24.

[0052] The modular assembly 100 has a general rectangular parallelepiped shape with an substantially square cross-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 pre-filter 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 outlet top face 28 of the distributor 10, is in the form of a box 36 whose outlet top face 38 is open and which has an open vertical side face 40 to allow the installation and extraction of the mechanical filter itself 42, which is in the form of a sliding drawer in the horizontal plane, thus facilitating maintenance operations in particular.

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

[0059] This filter can retain the largest dust particles and deposits, ranging in size from 10 microns to 100 microns. As these particles pass through the filter's concave and convex parabolic surfaces, they are trapped, reducing the charge on the electrostatic field they subsequently pass through. This, in turn, allows the collector plates to have a longer lifespan compared to other similar products.

[0060] The open upper 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 having a plate 47 for the bayonet mounting of the cartridges 44 and the penetration of the distributed gas flow inside the different cartridges 44.

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

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

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

[0065] Therefore, it is necessary to filter again with 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 needing to be replaced 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. Therefore, the number of cartridges required must be determined based on the flow rate of the gas stream to be treated.

[0068] When the activated carbon cartridges 44 are placed vertically, their replacement is facilitated and the seal 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 crutch 49 to hold each cartridge 44, in particular to ensure a good seal at the joint at the inlet or mouth of each cartridge (See [Fig.18]).

[0070] Such a support, or bracket 49, which is arranged and fixed by a screw 51, to support each cartridge at its cantilevered free end ensures the 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 leads to poor odor filtration results.

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

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

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

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

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

[0076] The electrostatic fume treatment module 14 here comprises three electrostatic filters arranged consecutively and through which the gas flow to be treated passes in series.

[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 having an open side face 58 giving access to three housings 59P, 59S and 59T housing respectively one of the three electrostatic filters, or electrostatic field hypertension filters, which comprise successively - according to 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 supply of the various filters 60P, 60S and 60T.

[0080] The outer 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 power supply of each filter 60P, 60S, 60T which are arranged in the internal volume of 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 any other filter. If one fails, it does not affect the operation of the other filters, which can continue to function.

[0083] In this way, it is also possible to obtain a sufficient and satisfactory fume filtration rate, 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 box 56 is particularly small and its overall size is shorter than the same type of box with two stages of filtration.

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

[0086] With reference to the schematic representation in [Fig.6], downstream of the mechanical pre-filter 12, each filter 60P, 60S, 60T comprises a positive needle electrode 61 (15kV), a negative plate electrode 66 (0V), a high-tension light electron 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, which is between 90% and 95%, is exceeded.

[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 removal 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 particles of fumes from oils or greases detach automatically, which extends the service life by about two to three months, more than three times longer than ordinary aluminum electrode plates.

[0091] One can also use the technology of coating with electro-conductive epoxy resin.

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

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

[0094] Depending on the site installation requirements, the electrostatic fume filtration module 14 is available in several types and for example with air inlet on the left, with air inlet on the right and - in 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 an additional feature, a control box and indicator lights indicating the saturation of one or both of the storage capacities of the three electrostatic filters may be provided on the front of the housing in order to enable the user to detect such a state in order to clean the electrostatic filter concerned before the next use.

[0097] The control unit may also include an indicator light for powering the unit, 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 control for the extraction motor, etc.

[0098] More particularly, the modular arrangement includes 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 moisture content can be very high - for example, in the case of cooking vapors - and the moisture they contain can impair 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 removal of 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 taken by the effluents to be treated before reaching module 14, and for example upstream of the inlet 22 in the distributor 10.

[0102] This 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 recovered liquid condensate evacuation conduit 84 oriented vertically and opening downwards.

[0105] The lower shell 82 has a central hole 83 for the through passage of the gas flow.

[0106] The centrifugation phenomenon causing dynamic condensation is obtained by means of a centrifugal 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 at the top 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 inner cylindrical face 90 of the cage 88 falls into the lower shell 82.

[0109] The [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] Figure 9 shows a first example of the installation of a modular treatment unit 100 in the form of a vertical tower in a waste treatment installation for a cooking installation.

[0111] The modular assembly 100 is represented here in a simplified schematic way.

[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 room.

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

[0115] Figure

[111] shows a first example of the installation of a modular treatment unit 100 which is arranged horizontally in a waste treatment installation for a cooking installation.

[0116] According to an unrepresented variant, the arrangement 100 can be arranged horizontally directly above the hood 102.

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

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

[0119] Figures 14 to 16 partially represent the upper front part of a motor vehicle 200 which is equipped internally (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 includes a front part or driver's cab 204 which is delimited at the front by a windscreen 206 and at the top by a portion of roof or canopy 208.

[0122] A modular assembly 100 of the type described above is arranged horizontally, along the transverse direction of the vehicle 200, above the roof 208 of the front driver's cab 204.

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

[0124] A vehicle 200 thus equipped can therefore be installed in all authorized places and operate without producing any unauthorized emissions or odors.

[0125] Figure 17 shows another example of the implementation and installation of a modular unit 100 for the treatment of waste enabling 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 self-contained 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 includes an extraction 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 incorporate a distributor as described above.

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

[0130] To give the best possible mobility to the cooking station 300, it can be designed in the form of a wheeled trolley 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 system for fume extraction and odor elimination, which allows for a true absence of odors and environmental pollution.

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

[0134] It offers the possibility of cooking in front of customers, and of presenting culinary skills in a lively way.

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

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

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

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

Claims

Demands

1. Modular assembly (100) for the treatment of emissions emitted by an appliance, in particular a cooking appliance, characterized in that it comprises, arranged in the path of a gaseous flow of emissions to be treated: - an electrostatic fume treatment module (14) which is capable of being connected to a source of emissions to be treated and in which are arranged at least three electrostatic filters (60P, 60S, 60T) through which consecutively the flow of emissions to be treated passes, each of which (60P, 60S, 60T) is electrically powered independently of each of the other electrostatic filters so that, if one of the electrostatic filters (60P, 60S, 60T) fails, it does not affect the operation of the other electrostatic filters which can continue to operate; - and a forced circulation module (18) of said gas flow through said electrostatic filters (60P, 60S, 60T).

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

3. Modular assembly (100) for the treatment of emissions according to claim 2, characterized in that the electrostatic fume treatment module (14) is arranged vertically within a modular assembly (100) in the form of an emissions treatment tower comprising an inlet (22) of said flow which is arranged in the lower part of the tower.

4. Modular assembly (100) for the treatment of waste according to claim 2, characterized in that the treatment module (14) electrostatic fume 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.

5. Modular assembly (100) for the treatment of discharges according to claim 4, characterized in that it is arranged horizontally above the roof (208) of the front cab (204) of a utility motor vehicle (200), in particular a food distribution vehicle equipped with a cooking appliance (202) emitting discharges to be treated.

6. Modular assembly (100) for the treatment of discharges according to any one of the preceding claims, characterized in that, arranged downstream of the electrostatic fume 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).

7. Modular assembly (100) for the treatment of waste according to claim 2, characterized in that it is arranged horizontally in the lower part of a self-contained and mobile cooking station (300), below a work surface (302) itself arranged below an upper extraction hood (102) belonging to the cooking station (300) and whose outlet is connected to an inlet of the modular assembly (10) for the treatment of waste.

8. Modular assembly (100) according to claim 6, 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 detachably fixed to a plate (47) of said housing (46) and the other free end of which cantilevers inside said housing, and in that said housing is provided with a support bracket (49) for the cartridge (44) which cooperates with said other free end.

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

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

11. Assembly according to the preceding claim, characterized in that the distributor (10) comprises at least one distribution partition (34) dividing the gaseous discharge stream to be treated into at least two stream parts, each of which is directed towards an associated portion of the inlet surface of the mechanical pre-filter (12).

12. Modular assembly (100) for the treatment of discharges 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 removal of water vapor and / or water droplets contained in the gaseous discharge stream to be treated, in particular from a dynamic separator by centrifugation and / or dynamic condensation.

13. Modular assembly (100) for the treatment of waste according to claim 1, characterized in that the module (14) is in the form of a box (56) having an open side face (58) giving access to three compartments (59P, 59S and 59T) housing respectively one of the three electrostatic filters which comprise successively, according to the direction of passage through the module (14), a primary filter (60P), a secondary filter (60S) and a tertiary filter (60T), the open side face (58) being closed by two adjacent hinged doors (62A, 62B) each of which includes means (63) allowing the electrical connection and supply of the different electrostatic filters (60P, 60S and 60T).

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