ES2676710B1 - METHODS FOR THE MANUFACTURE OF A SET FORMED BY A GAS CONDUCTION UNIT AND A FILTER OF PARTICLES AND FOR THE MANUFACTURE OF A HEAT EXCHANGER FOR GASES, AND HEAT EXCHANGER AND HEAT EXCHANGER MANUFACTURED ACCORDING TO THE METHODS - Google Patents
METHODS FOR THE MANUFACTURE OF A SET FORMED BY A GAS CONDUCTION UNIT AND A FILTER OF PARTICLES AND FOR THE MANUFACTURE OF A HEAT EXCHANGER FOR GASES, AND HEAT EXCHANGER AND HEAT EXCHANGER MANUFACTURED ACCORDING TO THE METHODS Download PDFInfo
- Publication number
- ES2676710B1 ES2676710B1 ES201730079A ES201730079A ES2676710B1 ES 2676710 B1 ES2676710 B1 ES 2676710B1 ES 201730079 A ES201730079 A ES 201730079A ES 201730079 A ES201730079 A ES 201730079A ES 2676710 B1 ES2676710 B1 ES 2676710B1
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- Spain
- Prior art keywords
- heat exchanger
- particulate filter
- conduction unit
- gases
- brazing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/0211—Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0012—Brazing heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
- F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
- F02M26/32—Liquid-cooled heat exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Description
DESCRIPCIONDESCRIPTION
METODOS PARA LA FABRICACION DE UN CONJUNTO FORMADO POR UNA UNIDADMETHODS FOR THE MANUFACTURE OF A SET FORMED BY A UNIT
DE CONDUCCION DE GASES Y UN FILTRO DE PARTICULAS Y PARA LAOF CONDUCTION OF GASES AND A FILTER OF PARTICLES AND FOR THE
FABRICACION DE UN INTERCAMBIADOR DE CALOR PARA GASES, Y CONJUNTO EMANUFACTURE OF A HEAT EXCHANGER FOR GASES, AND ASSEMBLY E
INTERCAMBIADOR DE CALOR FABRICADOS SEGUN LOS METODOSHEAT EXCHANGER MANUFACTURED ACCORDING TO THE METHODS
Sector de la tecnicaSector of the technique
La presente invention concierne, en un primer aspecto a un metodo para la fabrication de un conjunto formado por una unidad de conduction de gases y un filtro de particulas, para un intercambiador de calor para gases, en particular para los gases de escape de un motor, que comprende proteger al filtro de particulas frente a la corrosion por la action de un material de relleno de soldadura fuerte.The present invention concerns, in a first aspect, a method for the manufacture of an assembly formed by a gas conduction unit and a particulate filter, for a heat exchanger for gases, in particular for the exhaust gases of an engine , which comprises protecting the particulate filter against corrosion by the action of a brazing filler material.
Un segundo aspecto de la presente invencion concierne a un conjunto formado por una unidad de conduccion de gases y un filtro de particulas, para un intercambiador de calor para gases, en particular para gases de escape de un motor, en el que el filtro de particulas y/o unas regiones adyacentes de la unidad de conduccion de gases estan protegidos frente la corrosion que pueda causar un material de relleno de soldadura fuerteA second aspect of the present invention concerns an assembly formed by a gas conduction unit and a particulate filter, for a heat exchanger for gases, in particular for exhaust gases of a motor, in which the particulate filter and / or adjacent regions of the gas conduction unit are protected against corrosion that a brazing filler material can cause.
Un tercer aspecto de la presente invencion concierne a un intercambiador de calor para gases, en particular para gases de escape de un motor, que comprende un bloque intercambiador de calor y el conjunto del segundo aspecto.A third aspect of the present invention concerns a heat exchanger for gases, in particular for exhaust gases of a motor, comprising a heat exchanger block and the assembly of the second aspect.
Un cuarto aspecto de la presente invencion concierne a un metodo para la fabricacion de un intercambiador de calor para gases, en particular para gases de escape de un motor, que comprende fabricar un conjunto mediante el metodo del primer aspecto y fijar la unidad de conduccion de gases a un extremo de un bloque intercambiador de calor mediante un proceso de soldadura fuerte.A fourth aspect of the present invention concerns a method for the manufacture of a heat exchanger for gases, in particular for exhaust gases of a motor, which comprises making a assembly by the method of the first aspect and fixing the driving unit of a motor. gases at one end of a heat exchanger block by a brazing process.
Estado de la tecnica anteriorState of the prior art
En algunos intercambiadores EGR (del ingles "Exhaust Gas Recirculation”: "Recirculation de gases de escape”), principalmente en aplicaciones de baja presion (LP), los requisitos de limpieza son exigentes por lo que el uso de un filtro de particulas (no un filtro de hollm) integrado en la lmea de escape es cada vez mas demandado. Dicho filtro generalmente esta constituido por un componente independiente o, en algunos casos, por un componente integrado con el intercambiador EGR.In some EGR exchangers ("Exhaust Gas Recirculation": "Exhaust Gas Recirculation"), mainly in low pressure (LP) applications, the cleaning requirements are demanding so that the use of a particulate filter (not a filter of hollm) integrated in the exhaust line is increasingly demanded. Said filter is generally constituted by an independent component or, in some cases, by an integrated component with the EGR exchanger.
Los siguientes documentos de patente proponen intercambiadores de calor con filtros de partlculas fijados o integrados en diferentes partes del intercambiador.The following patent documents propose heat exchangers with particle filters fixed or integrated in different parts of the exchanger.
La patente EP2273095B1 se refiere a un intercambiador de calor que incluye un filtro de fluido integrado en dicho intercambiador, que incluye un area de filtro que sobresale de una superficie plana. Este filtro esta configurado como una junta y esta ensamblado entre la brida de conexion y el deposito de gas mediante elementos de tornillerla.Patent EP2273095B1 refers to a heat exchanger that includes a fluid filter integrated in said exchanger, which includes a filter area projecting from a flat surface. This filter is configured as a gasket and is assembled between the connection flange and the gas tank by screws.
La patente EP2194351B1 se refiere a un intercambiador de calor que incluye un filtro de partlculas para el filtrado de los gases de escape, estructuralmente integrado dentro del tubo de entrada de gases del intercambiador de calor.The patent EP2194351B1 refers to a heat exchanger that includes a particulate filter for filtering the exhaust gases, structurally integrated within the gas inlet pipe of the heat exchanger.
La patente FR2938051B1 se refiere a un intercambiador de calor que incluye un filtro alojado en una posicion escogida de modo que el filtro esta dispuesto proximo a un lado extremo del haz de tubos.Patent FR2938051B1 refers to a heat exchanger that includes a filter housed in a chosen position so that the filter is disposed next to an end side of the tube bundle.
La patente ES2421185B1, del mismo titular que la presente solicitud, describe un intercambiador de calor que comprende un deposito de gas provisto de un orificio de entrada acoplable a un extremo de la carcasa y un orificio de salida conectado con la llnea de recirculacion de gases, y un filtro de partlculas unido al orificio de entrada del deposito de gas preferentemente mediante soldadura por arco o por puntos, y adicionalmente, de manera opcional, mediante soldadura en horno.Patent ES2421185B1, from the same owner as the present application, discloses a heat exchanger comprising a gas reservoir provided with an inlet orifice engageable at one end of the housing and an outlet orifice connected to the gas recirculation line, and a particulate filter attached to the inlet port of the gas reservoir preferably by arc or spot welding, and additionally, optionally, by welding in the furnace.
La patente ES2531124, tambien del mismo titular que la presente solicitud, propone un intercambiador de calor con un filtro de partlculas para el filtrado de los gases de escape asociado al orificio de salida del deposito de gas, y una junta de estanqueidad dispuesta sobre una superficie exterior del reborde o brida de conexion, donde el filtro esta unido entre el deposito de gas y el reborde o brida de conexion mediante soldadura en horno, quedando as! integrado con el deposito de gas formando una unica pieza inseparable susceptible de ser acoplada a la carcasa del intercambiador.The patent ES2531124, also from the same owner as the present application, proposes a heat exchanger with a particle filter for filtering the exhaust gases associated with the outlet of the gas tank, and a sealing gasket arranged on a surface outside of the flange or connection flange, where the filter is connected between the gas tank and the flange or connection flange by welding in the oven, thus remaining! integrated with the gas tank forming a single inseparable piece that can be coupled to the heat exchanger housing.
En ninguno de los disenos existentes y conocidos se propone proteger al filtro de partlculas frente al material de relleno de soldadura fuerte utilizado para soldar oras piezas del intercambiador de calor, tales como el deposito de gas al bloque intercambiador de calor, por lo que en muchos casos el flujo de tal material sobre el filtro de particulas ocasiona la corrosion del mismo, la cual puede incluso ocasionar la perforation del filtro de particulas. El riesgo de corrosion aumenta cuanto mas cerca del filtro de particulas estan las piezas a unir mediante soldadura fuerte.In none of the existing and known designs is it proposed to protect the particle filter from the brazing filler material used to weld other parts of the heat exchanger, such as the gas tank to the heat exchanger block, so in many cases the flow of such material on the particulate filter causes corrosion thereof, which can even cause the perforation of the particulate filter. The risk of corrosion increases the closer to the particle filter are the pieces to be joined by brazing.
Aparece, por tanto, necesario ofrecer una alternativa al estado de la tecnica que cubra las lagunas halladas en el mismo, proporcionando una solution que evite la mencionada corrosion del filtro de particulas.It appears, therefore, necessary to offer an alternative to the state of the art that covers the gaps found therein, providing a solution that avoids the aforementioned corrosion of the particulate filter.
Explication de la inventionExplanation of the invention
Con tal fin, la presente invencion concierne a un metodo para la fabrication de un conjunto formado por una unidad de conduction de gases y un filtro de particulas, para un intercambiador de calor para gases, en particular para gases de escape de un motor, donde la unidad de conduccion de gases esta adaptada para ser fijada a un extremo de un bloque intercambiador de calor de manera que queda en comunicacion fluidica con el bloque intercambiador de calor para el paso de gases a su traves, en el que el metodo comprende la fijacion inseparable del filtro de particulas a la unidad de conduccion de gases para filtrar los gases de escape que pasan a su traves.For this purpose, the present invention concerns a method for the manufacture of an assembly formed by a gas conduction unit and a particulate filter, for a heat exchanger for gases, in particular for exhaust gases of an engine, where the gas conduction unit is adapted to be fixed to one end of a heat exchanger block so that it remains in fluid communication with the heat exchanger block for the passage of gases therethrough, wherein the method comprises the fixing inseparable from the particulate filter to the gas conduction unit to filter the exhaust gases that pass through it.
A diferencia de los metodos conocidos en el estado de la tecnica, el propuesto por el primer aspecto de la presente invencion comprende, de manera caracteristica, aplicar un compuesto inhibidor de soldadura fuerte (o pintura de "stop-off”) sobre al menos parte del filtro de particulas y/o sobre al menos unas regiones de la unidad de conduccion de gases que son adyacentes al filtro de particulas, para evitar el flujo de al menos un material de relleno de soldadura fuerte sobre el filtro de particulas y la humectacion del mismo con al menos dicho material de relleno de soldadura fuerte.In contrast to the methods known in the state of the art, the one proposed by the first aspect of the present invention typically comprises applying a brazing inhibitor compound (or "stop-off" paint) on at least part of the particulate filter and / or on at least some regions of the gas driving unit that are adjacent to the particulate filter, to prevent the flow of at least one brazing filler material over the particulate filter and the wetting of the particulate filter. same with at least said brazing filler material.
De acuerdo a un ejemplo de realization del metodo del primer aspecto de la presente invencion, el citado compuesto inhibidor de soldadura fuerte esta hecho tambien para evitar el flujo de un material fundente sobre el filtro de particulas y la humectacion del mismo con al menos el citado material fundente.According to an example of realization of the method of the first aspect of the present invention, said brazing inhibiting compound is also made to prevent the flow of a flux material on the particulate filter and the humidification thereof with at least that mentioned Flux material
Para otro ejemplo de realizacion, la citada aplicacion del compuesto inhibidor de soldadura fuerte se realiza antes de que la unidad de conduccion de gases se fije a un extremo de un bloque intercambiador de calor mediante un proceso de soldadura fuerte, para evitar el flujo de por lo menos un material de relleno de soldadura fuerte, utilizado en el mencionado proceso de soldadura fuerte, sobre el filtro de particulas y la humectacion del mismo con por lo menos el citado material de relleno de soldadura fuerte.For another example of embodiment, said application of the brazing inhibitor compound is carried out before the gas conduction unit is fixed to one end of a heat exchanger block by a brazing process, to prevent the flow of at least one brazing filler material, used in said brazing process, on the particulate filter and the wetting thereof with at least said brazing filler material.
Segun un ejemplo de realization, la mencionada fijacion inseparable del filtro de particulas a la unidad de conduction de gases comprende fijar el filtro de particulas a un deposito de gas de la unidad de conduccion de gases, en el que las mencionadas regiones de la unidad de conduccion de gases que son adyacentes al filtro de particulas son regiones del deposito de gas.According to an exemplary embodiment, said inseparable fixation of the particulate filter to the gas conduction unit comprises fixing the particulate filter to a gas reservoir of the gas conduction unit, wherein said regions of the gas unit are connected to the gas unit. Conduction of gases that are adjacent to the particulate filter are regions of the gas reservoir.
De acuerdo a una posible implementation de dicho ejemplo de realizacion, la fijacion inseparable del filtro de particulas al deposito de gas comprende la fijacion de un ala periferica del filtro de particulas a un reborde perimetral del deposito de gas que rodea una abertura del mismo, comprendiendo el metodo del primer aspecto de la invention la aplicacion del compuesto inhibidor de soldadura fuerte en regiones del filtro de particulas y/o del deposito de gas adyacentes a la citada ala perimetral.According to a possible implementation of said exemplary embodiment, the inseparable fixation of the particulate filter to the gas reservoir comprises fixing a peripheral wing of the particulate filter to a perimeter flange of the gas reservoir surrounding an opening thereof, comprising the method of the first aspect of the invention the application of the brazing inhibitor compound in regions of the particulate filter and / or the gas reservoir adjacent to said perimetric wing.
Un segundo aspecto de la presente invencion concierne a un conjunto formado por una unidad de conduccion de gases y un filtro de particulas, para un intercambiador de calor para gases, en particular para gases de escape de un motor, donde la unidad de conduccion de gases esta adaptada para ser fijada a un extremo de un bloque intercambiador de calor de manera que se encuentre en comunicacion fluidica con el bloque intercambiador de calor para el paso de gases a su traves, y donde el filtro de particulas esta fijado de manera inseparable a la unidad de conduccion de gases para filtrar los gases de escape que pasan a traves del mismo.A second aspect of the present invention concerns an assembly formed by a gas conduction unit and a particulate filter, for a heat exchanger for gases, in particular for exhaust gases of a motor, where the gas conduction unit is adapted to be fixed to one end of a heat exchanger block so that it is in fluidic communication with the heat exchanger block for the passage of gases therethrough, and where the particle filter is inseparably fixed to the gas conduction unit to filter the exhaust gases that pass through it.
A diferencia de los conjuntos conocidos en el estado de la tecnica, en el propuesto por el segundo aspecto de la presente invencion por lo menos parte del filtro de particulas y/o por lo menos unas regiones de la unidad de conduccion de gases que estan adyacentes al filtro de particulas estan cubiertos con un compuesto inhibidor de soldadura fuerte para evitar el flujo de al menos un material de relleno de soldadura fuerte sobre los mismos y la humectacion de los mismos con al menos dicho material de relleno de soldadura fuerte.Unlike the assemblies known in the state of the art, in the proposed by the second aspect of the present invention at least part of the particle filter and / or at least regions of the gas conduction unit that are adjacent The particulate filter is covered with a brazing inhibiting compound to prevent the flow of at least one brazing filler material thereon and the wetting thereof with at least said brazing filler material.
Un tercer aspecto de la presente invencion concierne a un intercambiador de calor para gases, en particular para gases de escape de un motor, que comprende:A third aspect of the present invention concerns a heat exchanger for gases, in particular for exhaust gases of a motor, comprising:
- un bloque intercambiador de calor destinado a la circulation de gases con un intercambio de calor con un fluido refrigerante; y - a heat exchanger block intended for the circulation of gases with an exchange of heat with a cooling fluid; Y
- un conjunto formado por una unidad de conduction de gases y un filtro de partlculas segun el segundo aspecto de la presente invention, en el que la unidad de conduction de gases esta fijada mediante soldadura fuerte a un extremo del bloque intercambiador de calor de manera que esta en comunicacion fluldica con el bloque intercambiador de calor para el paso de gases a su traves.- an assembly formed by a gas conduction unit and a particulate filter according to the second aspect of the present invention, in which the gas conduction unit is fixed by brazing to one end of the heat exchanger block in such a way that It is in fluid communication with the heat exchanger block for the passage of gases through it.
Un cuarto aspecto de la presente invention concierne a un metodo para la fabrication de un intercambiador de calor para gases, en particular para gases de escape de un motor, que comprende:A fourth aspect of the present invention concerns a method for the manufacture of a heat exchanger for gases, in particular for exhaust gases of an engine, comprising:
- fabricar un conjunto formado por una unidad de conduction de gases y un filtro de partlculas de acuerdo con el metodo del primer aspecto; y- manufacturing an assembly formed by a gas conduction unit and a particle filter according to the method of the first aspect; Y
- fijar la unidad de conduction de gases a un extremo de un bloque intercambiador de calor mediante un proceso de soldadura fuerte.- fixing the gas conduction unit to one end of a heat exchanger block by means of a brazing process.
Breve description de los dibujosBrief description of the drawings
Las anteriores y otras ventajas y caracterlsticas se comprenderan mas plenamente a partir de la siguiente description detallada de unos ejemplos de realization con referencia a los dibujos adjuntos, que deben tomarse a tltulo ilustrativo y no limitativo, en los que:The foregoing and other advantages and features will be more fully understood from the following detailed description of some realization examples with reference to the attached drawings, which must be taken as an illustrative and non-limiting example, in which:
La Figura 1 es una vista en perspectiva explosionada que incluye a un deposito de gas (mostrado seccionado con fines de claridad) y a un filtro de partlculas con un compuesto inhibidor de soldadura fuerte dispuesto sobre una zona adyacente (marca P) al borde interior de un ala periferica del mismo a fijar a un reborde perimetral del deposito de gas, segun un ejemplo de realization del metodo del primer aspecto de la invention y del conjunto del segundo aspecto.Figure 1 is an exploded perspective view including a gas tank (shown sectioned for clarity purposes) and a particulate filter with a brazing inhibitor composite disposed on an adjacent zone (P mark) to the inner edge of a peripheral wing thereof to be fixed to a perimeter flange of the gas tank, according to an embodiment example of the method of the first aspect of the invention and of the assembly of the second aspect.
La Figura 2 muestra, mediante una vista esquematica parcial en alzado, al intercambiador de calor del tercer aspecto de la presente invention, para un ejemplo de realization.Figure 2 shows, through a partial schematic view in elevation, the heat exchanger of the third aspect of the present invention, for an example of realization.
La Figura 3 muestra sendas vistas del conjunto del segundo aspecto de la invention, en particular una vista superior que corresponde a un alzado frontal del conjunto y una vista inferior que corresponde a una section transversal segun un plano que pasa por la llnea A-A de la vista superior, donde el conjunto ha sido fabricado segun el metodo del primer aspecto de la presente invention para un ejemplo de realization para el que el compuesto inhibidor de soldadura fuerte se ha dispuesto sobre el deposito de gas (marca P), en particular sobre una zona adyacente al borde exterior del ala periferica del filtro de partlculas. Figure 3 shows views of the assembly of the second aspect of the invention, in particular a top view corresponding to a front elevation of the assembly and a bottom view corresponding to a cross section according to a plane passing through the line AA of the view above, wherein the assembly has been manufactured according to the method of the first aspect of the present invention for an example of embodiment for which the brazing inhibitor compound has been disposed on the gas tank (P mark), in particular on an area adjacent to the outer edge of the peripheral wing of the particle filter.
Description detallada de unos ejemplos de realizationDetailed description of some realization examples
En las Figuras 1 y 3 se ilustran sendos ejemplos de realization del conjunto del segundo aspecto de la invention, el cual esta formado por una unidad de conduction de gases y un filtro de partlculas 7, para un intercambiador de calor para gases, en particular para gases de escape de un motor, fabricados mediante el metodo del primer aspecto.Figures 1 and 3 illustrate two examples of realization of the whole of the second aspect of the invention, which is formed by a gas conduction unit and a particulate filter 7, for a heat exchanger for gases, in particular for exhaust gases of an engine, manufactured by the method of the first aspect.
En las citadas Figuras solamente se ha ilustrado una parte de la unidad de conduction de gases, en particular un deposito de gas 6 al que se fija el filtro de partlculas 7 de manera inseparable.In the figures mentioned only a part of the gas conduction unit is shown, in particular a gas tank 6 to which the particle filter 7 is fixed inseparably.
Para el ejemplo de realization ilustrado en la Figura 1, la citada fijacion se lleva a cabo fijando un ala periferica 9 del filtro de partlculas 7 a un reborde perimetral 10 del deposito de gas 6 que rodea una abertura del mismo, y el compuesto inhibidor de soldadura fuerte P se ha aplicado sobre una zona adyacente a todo el borde interior del ala periferica 9, con el fin de hacer de barrera frente al material de relleno de soldadura fuerte y/o del flujo de un material fundente, si es el caso.For the realization example illustrated in Figure 1, said fixing is carried out by fixing a peripheral wing 9 of the particle filter 7 to a perimeter flange 10 of the gas tank 6 surrounding an opening thereof, and the inhibitor compound of brazing P has been applied on an area adjacent to the entire inner edge of the peripheral flange 9, in order to act as a barrier against the brazing filler material and / or the flux of a flux material, as the case may be.
En cambio, para el ejemplo de realization de la Figura 3, la fijacion del filtro de partlculas 7 al deposito de gas 6 se realiza fijando el ala perimetral 9 del mismo dentro del deposito de gas 6, en particular en la pared interior del mismo. En este caso, el compuesto inhibidor de soldadura fuerte P se ha aplicado sobre el deposito de gas 6, en particular sobre una zona adyacente a todo el borde exterior del ala periferica 9 del filtro de partlculas 7, para proporcionar una barrera frente al material de relleno de soldadura fuerte y/o del flujo de un material fundente, si es el caso, impidiendo as! que fluya hacia el filtro de partlculas 7, incluyendo tanto la zona central 8 como el ala periferica 9.In contrast, for the embodiment example of Figure 3, the fixation of the particle filter 7 to the gas tank 6 is done by fixing the perimetric wing 9 thereof inside the gas tank 6, in particular in the inner wall thereof. In this case, the brazing inhibiting compound P has been applied to the gas tank 6, in particular on an area adjacent to the entire outer edge of the peripheral flange 9 of the particle filter 7, to provide a barrier against the material of brazing filler and / or the flow of a flux material, if this is the case, thus preventing! which flows towards the particle filter 7, including both the central zone 8 and the peripheral wing 9.
En general, la union del filtro de partlculas 7 al deposito de gas 6 no se hace por soldadura fuerte ("brazing”), sino exclusivamente por otra clase de soldadura, tal como electrica por puntos o mediante laser. Por ello, la protection conferida por el compuesto inhibidor de soldadura fuerte se hace frente al material de relleno de soldadura fuerte y/o del flujo de un material fundente que pueda provenir de la union de otras piezas, como por ejemplo del deposito de gas 6 a oras piezas (colector, bloque intercambiador de calor, etc.). In general, the connection of the particulate filter 7 to the gas reservoir 6 is not done by brazing, but exclusively by another type of welding, such as electric by points or by laser. by the brazing inhibiting compound, the brazing filler material and / or the flux of a flux material that may come from the union of other parts, such as from the gas tank 6 to the other pieces (collector, heat exchanger block, etc.).
Por ello, la realization de la Figura 3 es preferida, ya que al aplicar el compuesto inhibidor desde fuera del filtro de particulas 7 se protege a este por completo, no solamente la zona central 8, del material de relleno de soldadura fuerte y/o del flujo de un material fundente que pueda provenir de la union de esas otras piezas. Ademas, la superficie del filtro de particulas 7 es irregular, por lo que es mas facil, rapido y por tanto barato, pintar la superficie lisa del deposito de gas 6.Therefore, the embodiment of Figure 3 is preferred, since when applying the inhibitor compound from outside the particulate filter 7, this is completely protected, not only the central zone 8, of the brazing filler material and / or of the flow of a flux material that may come from the union of these other pieces. In addition, the surface of the particulate filter 7 is irregular, so it is easier, faster and therefore cheaper to paint the smooth surface of the gas tank 6.
En cualquier caso, la zona donde se aplicara el compuesto inhibidor P dependera de espacio disponible entre el exterior del filtro y la ubicacion del material de relleno de soldadura fuerte.In any case, the area where the inhibitor compound P will be applied will depend on the space available between the exterior of the filter and the location of the brazing filler material.
Finalmente, en la Figura 2 se muestra, en parte, al intercambiador de calor 1 del tercer aspecto de la presente invention, para un ejemplo de realization para el que este comprende:Finally, in Figure 2 is shown, in part, the heat exchanger 1 of the third aspect of the present invention, for an example of realization for which it comprises:
- un bloque intercambiador de calor 3 que incluye un haz de tubos 2 por los que circulan gases con un intercambio de calor con un fluido refrigerante, estando los extremos de los tubos 2 fijados a sendas placas de soporte 5 (solamente se ha ilustrado una de ellas); y- a heat exchanger block 3 including a bundle of tubes 2 through which gases circulate with a heat exchange with a cooling fluid, the ends of the tubes 2 being fixed to respective support plates 5 (only one of which is shown) they); Y
- un conjunto formado por una unidad de conduction de gases y un filtro de particulas 7, en el que la unidad de conduction de gases incluye un deposito de gas 6 fijado mediante soldadura fuerte a un extremo del bloque intercambiador de calor 3, en particular a una de las placas de soporte 5, de manera que esta en comunicacion fluidica con el bloque intercambiador de calor 3 para el paso de gases a su traves desde un extremo de entrada 4 a uno de salida (no ilustrado).- an assembly formed by a gas conduction unit and a particulate filter 7, in which the gas conduction unit includes a gas tank 6 fixed by brazing to one end of the heat exchanger block 3, in particular to one of the support plates 5, so that it is in fluid communication with the heat exchanger block 3 for the passage of gases therethrough from an input end 4 to an output end (not shown).
Un experto en la materia podria introducir cambios y modificaciones en los ejemplos de realization descritos sin salirse del alcance de la invention segun esta definido en las reivindicaciones adjuntas. A person skilled in the art could introduce changes and modifications in the described embodiment examples without departing from the scope of the invention as defined in the appended claims.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201730079A ES2676710B1 (en) | 2017-01-23 | 2017-01-23 | METHODS FOR THE MANUFACTURE OF A SET FORMED BY A GAS CONDUCTION UNIT AND A FILTER OF PARTICLES AND FOR THE MANUFACTURE OF A HEAT EXCHANGER FOR GASES, AND HEAT EXCHANGER AND HEAT EXCHANGER MANUFACTURED ACCORDING TO THE METHODS |
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| ES201730079A ES2676710B1 (en) | 2017-01-23 | 2017-01-23 | METHODS FOR THE MANUFACTURE OF A SET FORMED BY A GAS CONDUCTION UNIT AND A FILTER OF PARTICLES AND FOR THE MANUFACTURE OF A HEAT EXCHANGER FOR GASES, AND HEAT EXCHANGER AND HEAT EXCHANGER MANUFACTURED ACCORDING TO THE METHODS |
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