• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Heat exchanger for gases, especially the exhaust gases of an engine. The present invention relates to a heat exchanger for exhaust gases of an engine of a vehicle, of the type comprising: - a bundle of tubes or plates arranged inside a housing (2), - the housing (2): - formed in two hollow parts (2a, 2b), - the two parts (2a, 2b) comprise corresponding joining surfaces at their respective peripheral edges, - the two parts (2a, 2b) are arranged facing each other and joined by their respective joint surfaces in a first and second joint area forming a first and a second joint (4) welded to the furnace, - respective manifolds (6a, 6b) at the ends and inside the housing (2a, 2b), and - respective gas tanks (3a, 3b) connected to the tubes or plates, the gas tanks (3a, 3b) are superimposed on an external surface of the housing (2a, 2b) and are connected by respective joints welded to the oven a each part of the housing (2a, 2b), where: - the two parts (2a, 2b) of the housing, the two gas tanks (3a, 3b) and the two manifolds (6a, 6b) are made of an aluminum base material, and - the oven-welded joints of the two parts (2a, 2b) of the housing with each other and of the housings (2a, 2b) with each gas tank (3a, 3b) are made at the same time. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2733747A1
    申请号:ES201830520
    申请日:2018-05-31
    公开日:2019-12-02
    发明作者:Martinez Roberto Fernandez；Cervero Pedro Bruna；La Fuente Romero Jose Antonio De；Zazurca Cristina Gomez
    申请人:Valeo Termico SA；
    IPC主号:
    专利说明:

    [0001]
    [0002]
    [0003]
    [0004] The present invention concerns in general a heat exchanger for gases, in particular for exhaust gases of an engine of a vehicle, comprising a bundle of tubes or heat exchange plates arranged inside a casing housing, and respective collectors at the ends of the indicated housing. More particularly, it refers to a type of heat exchanger of which there are respective gas tanks connected to the tubes or plates.
    [0005]
    [0006] Background of the invention:
    [0007]
    [0008] The recirculation of exhaust gases in a motor vehicle (in English called "exhaust gas recirculation" or simply by its acronym EGR) is a system used for years that consists in redirecting a part of the exhaust gases of combustion engines towards the intake manifold, in order to mix these gases with the intake air, since the presence of the exhaust gases in the mixture decreases the production of nitrogen oxides (NOx).
    [0009]
    [0010] The EGR system works mainly at low engine load and low speed. The proportion of recirculated gas is adapted for each engine based on pollution standards to respect the balance between nitrogen oxides and particulate emissions.
    [0011]
    [0012] Basically the pollution control system by recirculation of the exhaust gases is made by means of a tube that allows the exhaust gases to be channeled to the intake manifold, together with a heat exchanger (EGRC or "Exhaust Gas Recycling Cooler") to cool the burnt gas installed in the EGR system loop and improve the efficiency of the system, and together with a valve that controls the passage of exhaust gases through it.
    [0013]
    [0014] Heat exchangers, and in particular EGRC type refrigerators can have different configurations. Heat exchangers for exhaust gases of Exhaust of an engine of a vehicle comprising the elements described in the preamble of claim 1 of the present invention, ie:
    [0015] - set of heat transfer elements (formed by a bundle of tubes or plates) intended for the circulation of exhaust gases, and where heat transmission is carried out with the burnt exhaust gas of the vehicle's combustion engine ;
    [0016] - a hollow elongated housing (referred to in jargon as a ferrule) that extends longitudinally, with its front and rear ends open, and inside which houses said bundle of tubes, delimiting with the collectors, circulating the refrigerant through the housing, externally to the tubes;
    [0017] - first and second support plates (referred to in the jargon as collectors) each respectfully coupled to an inlet end and a gas outlet end of said housing, the ends of the heat transfer elements of said assembly being fixed heat transfer elements to said first and second support plates so that they are communicated with the outside of the housing through through holes thereof; Y
    [0018] - first and second gas tanks connected to the pipes, respectively coupled to each gas tank on the outside of each manifold.
    [0019]
    [0020] To date, EGRC type refrigerators have been manufactured mostly in stainless steel, due to the mechanical and chemical requirements of the application that require a material highly resistant to corrosion and mechanical stress.
    [0021]
    [0022] From now on, to simplify, we will simply talk about "refrigerator" or "heat exchangers", although it is always an EGRC type refrigerator.
    [0023]
    [0024] In order to reduce the cost and weight of the refrigerator, aluminum is recently being used as a replacement material for stainless steel in the manufacture of the different components of the refrigerator.
    [0025]
    [0026] During the refrigerator assembly operation, its various components must be joined together. One of the most commonly used technologies for this is welding in the furnace (in English it is known by the term "brazing").
    [0027] Different furnace welding processes have been used commercially to manufacture aluminum heat exchangers, although aluminum heat exchangers for use in the automobile industry are generally produced by controlled atmosphere welding ("CAB") (dominant method) and secondarily by vacuum welding. “CAB” type furnace welding occurs under a controlled atmosphere that normally consists of nitrogen with as low amounts of oxidizing impurities (mainly oxygen, gas and water vapor) as possible.
    [0028]
    [0029] The material required for welding in an aluminum oven ("CAB" or vacuum type) is generally a multilayer material, in which the filler material to create the weld seals is laminated together with the core material thus forming a single sheet of multilayer material.
    [0030]
    [0031] One of the main components of the refrigerator is the housing, which has an elongated and enveloping body, open at its respective ends, to receive inside the tubes, and whose function is to allow the circulation of the refrigerant inside the refrigerator and which covers the assembly of the tubes or plates used in the gas circuit. The housing normally has a rectangular or circular shape, although it can also be irregular if necessary to increase its capacity. Thus, the shape of the housing determines the cross section and, therefore, the amount of heat transfer elements (tubes or plates).
    [0032]
    [0033] The main drawback of using a multilayer aluminum material for the manufacture of the refrigerator housing is that it is difficult to create closed geometries, such as an enclosure, or tubes with a single component. In addition, the housing generally includes coolant projections and other stamping areas that are not easy to seal in a closed component.
    [0034]
    [0035] Therefore, it is necessary to offer an alternative to the state of the art that covers the gaps found therein, providing a heat exchanger for exhaust gases of an engine manufactured by furnace welding of all its components, which has a low Weight, low cost and optimum quality.
    [0036]
    [0037] Description of the invention:
    [0038]
    [0039] The objective of the present invention is to provide a heat exchanger for Exhaust gases of an engine, which solves the aforementioned drawbacks and presents the advantages described below.
    [0040]
    [0041] To this end, the present invention concerns a heat exchanger for gases, in particular for exhaust gases of a combustion engine, which in a manner known per se comprises:
    [0042] - set of heat transfer elements (formed by bundle of tubes or plates) intended for the circulation of exhaust gases,
    [0043] - an elongated housing that extends along a longitudinal direction, and that is open at their respective opposite ends, and inside which houses said heat transfer elements,
    [0044] - a first and second manifolds respectfully coupled each at an inlet end and a gas outlet end of said housing and each manifold disposed within each end of the housing, the ends of the heat transfer elements of said set of heat transfer elements to said first and second collectors,
    [0045] - a first and second gas tanks connected to the transfer elements, respectively coupled to each gas tank on the outside of each manifold.
    [0046]
    [0047] Unlike the exchangers known in the state of the art, in that proposed by the present invention, it has the particularity that:
    [0048] - the housing is formed in two hollow parts,
    [0049] - the two parts of the housing comprise corresponding joining surfaces at their respective peripheral edges,
    [0050] - the two parts of the housing are arranged facing each other and joined by their respective joint surfaces in a first and second joint area forming a first and second joint welded to the furnace,
    [0051] - the respective gas tanks are superimposed on an external surface of the housing and are connected by respective welded joints to each part of the housing,
    [0052] - the two parts of the housing, the two gas tanks and the two manifolds are made of an aluminum base material, and
    [0053] - the furnace welded joints of the two carcass parts with each other and the housings with each gas tank are made at the same time (in the furnace welding of the entire heat exchanger assembly).
    [0054] This advantageous solution of dividing the aluminum housing into two parts, which are manufactured separately and during the assembly operation of the complete refrigerator are joined by their corresponding joint surfaces forming a first and second oven weld joints guarantees a perfect and rapid conformation of the housing, and also guarantees a perfect and fast union between the half housings and the gas tanks, at the same time that it is a very short assembly operation since all the welded joints of all the refrigerator components are made at the same time .
    [0055]
    [0056] According to a preferred embodiment, the two parts of the carcass each have a hollow carcass body with a continuous surface of a "U" shaped cross-section, presenting an upper face, a lower face and a lateral face of connection between the upper and the lower face, and the upper and lower faces having respective peripheral longitudinal edges, both parts of the housing are arranged in the heat exchanger facing each other by their respective peripheral longitudinal edges and joined by means of the two joining surfaces that are joined by oven welding, one at the top and the other at the bottom.
    [0057]
    [0058] Both parts of the housing have similar configuration and dimensions, although they may have different elements depending on the type of housing, such as an inlet port and another outlet of the cooling fluid for the circulation of a cooling fluid through the interior of the housing in contact with the heat transfer elements of the tube bundle for heat exchange with the exhaust gases circulating therein.
    [0059]
    [0060] Referring to the joint surfaces between the two parts of the housing that make up the joints welded to the oven, in a first embodiment, they may be formed by a longitudinal strip in each of the two peripheral edges of the two parts of the housing that it is superimposed on the peripheral edge of the other part of the housing, thus forming welded joints in a flap type furnace.
    [0061]
    [0062] Said overlapping strip may occupy only a central part of the longitudinal joint zone between carcass edges, so that at the two front and rear ends of said joint zone there is no overlapping strip. In these absent end areas of overlapping strip respective extensions are formed that extend transversely of the part of the housing that is arranged in the lower part of the overlap in the transverse direction towards the other part of the housing.
    [0063]
    [0064] In the lower part of the superimposed strip of the overlapping part of the housing that is not covered by the other part of the housing, a longitudinal interior gap is formed, which allows the deviation of tolerances of the components ensuring that the overlap has an area minimum weld This hole is closed by the integration of the gas tanks, which cover said hole.
    [0065]
    [0066] Alternatively, instead of using flap type joint surfaces between parts of the housing, other equivalent solutions can be used for welded joints of both parts of the housing.
    [0067]
    [0068] In other possible embodiments of the present invention, the bonding surfaces for the furnace welded joints between the two housing parts may be formed by respective extensions upwards of the peripheral edges. They can also simply be the peripheral edges of each part of the housing that abut each other. Or also with rolled geometries, or complementary surfaces in the form of zigzag.
    [0069]
    [0070] Optionally, an additional elongate element can be added to any of the bonding surface options, also made of aluminum. Said additional elongate element has a length sufficient to cover at least a substantial part (more than% parts of the entire length) of the area of joint between parts.
    [0071]
    [0072] The present invention provides different geometries of the joining surfaces between two parts of the housing, although it should be borne in mind that the design of these geometries must be able to be used satisfactorily with a manufacturing material of the housings and the gas tanks which is a aluminum multilayer sheet.
    [0073]
    [0074] That is, preferably all components (housing, inner tubes or plates, gas tanks and manifolds) are made of multilayer aluminum. Said multilayer aluminum is preferably constituted by a sheet comprising at least two superimposed layers of aluminum: a layer of core material and another layer of welding material. Additionally there may be another additional layer of protection. The core material can be 3000 series aluminum, the welding material can be 4000 series, and the material of protection can be of the 1000 series. The sequence of the different layers can vary, although the welding layer must always be on the surface of the material either on the internal or external face.
    [0075]
    [0076] Gas tanks and half housings have the filler material located on the inside of the component.
    [0077]
    [0078] Aluminum offers numerous advantageous features for heat exchangers, among which we highlight:
    [0079] - a lightweight design;
    [0080] - highly automated and safe welding process;
    [0081] - high thermal conductivity, also when welded together;
    [0082] - corrosion resistance;
    [0083] - good formability;
    [0084] - adequate force to resist temperature and pressure cycles; Y
    [0085] - Easy to recycle, that is, an environmentally friendly solution.
    [0086]
    [0087] The multilayer aluminum material used for the manufacture of the various components of the invention comprises some heat-treatable or thermally treatable aluminum alloys, with coating relationships, thickness sheets and widths according to the specifications of each specific case.
    [0088]
    [0089] With reference to the gas tanks, in a preferred embodiment when a welded type of flap welded type of the housings is used, an opening or cut configured for the positioning of the final part of the housing is provided on the coupling edge therewith. overlapping strip. Preferably, an opening is provided for each of the two welded joints. In addition to allowing the introduction of the half housings in the tank, said openings allow closing the potential gap between the half housings.
    [0090]
    [0091] In reference to the respective collectors, they have a peripheral edge that extends in the longitudinal direction of the heat exchanger and in an outward direction.
    [0092]
    [0093] The present invention can be applied interchangeably to a type of heat exchangers that carry bundles of tubes, or to those that carry plates.
    [0094] Brief description of the figures
    [0095]
    [0096] For a better understanding of how much has been exposed, some drawings are attached in which, schematically and only by way of non-limiting example, case studies of different embodiments are represented.
    [0097]
    [0098] Figure 1 is the same perspective view of Figure 2 where the gas tanks are already located in their final working position on the housings. In detail 1b, the positioning of the peripheral edge of a gas tank is perceived.
    [0099]
    [0100] Figure 2 is also a perspective view of a possible embodiment of the casing housing with the two manifolds, where the two gas tanks have been faced.
    [0101]
    [0102] Figure 3 is a perspective view of a possible embodiment of the housing enclosure consisting of two housing parts surrounding the tubes, and respective collectors are located at the respective ends of the housing. A detail 3b of one of the connection areas between flap-shaped housings is also observed, and a detail 3c of a schematic side view of one of the connection areas between flap-shaped housings.
    [0103]
    [0104] Figure 4 is a perspective view of a second embodiment of the housing, in which the two housing parts have their respective flat peripheral edges.
    [0105]
    [0106] Figure 5 is a perspective view of a third embodiment of the enclosure.
    [0107]
    [0108] Figure 6 is a perspective view of a fourth embodiment of the housing, in which the two housing parts are joined with a joint in the form of perpendicular extensions.
    [0109]
    [0110] Figure 7 is a perspective view of a fifth embodiment of the housing, in which the two housing parts are joined with a winding-shaped joint.
    [0111]
    [0112] Figure 8 is a perspective view of a sixth embodiment of the housing envelope, in which the two housing parts are joined with a joint with complementary zigzag shaped surfaces.
    [0113] Figure 9 is a perspective view of a seventh embodiment of the housing, in which the two housing parts are joined with a joint with straight peripheral edges bumping into each other and also by means of an external element.
    [0114]
    [0115] Figure 10 is a perspective view of an eighth embodiment of the housing, in which the two housing parts are joined in a similar manner to the first embodiment in the form of a flap-type joint and also by means of fixing means.
    [0116]
    [0117] Figures 11a to 11c are different views of a possible embodiment of one of the two parts of the housing. Specifically, Figure 11a is a perspective view, 11b is a side view and 11c is a front view.
    [0118]
    [0119] Figures 12a to 12d are different views of a possible embodiment of the gas tank. Specifically, figure 12a is a perspective view, 12b is a front view, 12c is a side view and 12d is a sectional view taken along line A-A of figure 12c.
    [0120]
    [0121] Description of some embodiments
    [0122]
    [0123] Next, some embodiments of the present invention are described with reference to Figures 1 to 12.
    [0124]
    [0125] As can be seen in Figures 1 and 2, the present invention concerns a heat exchanger for gases, especially for exhaust gases of an engine, comprising:
    [0126]
    [0127] - a housing (2) with an elongated body shape that extends along a longitudinal direction, and that is open at its respective opposite front and rear ends (input and output), and inside which houses the elements of heat transfer (not shown). The housing (2) is formed by two distinct hollow parts (2a, 2b), the two parts (2a, 2b) comprising corresponding joining surfaces at their respective peripheral edges. And the two parts (2a, 2b) of the housing are arranged facing each other and joined by their respective joint surfaces in a first and second joint area (4) forming a first and second joint welded to the furnace.
    [0128] - A first (6a) and second (6b) manifolds respectfully coupled each at an inlet end and a gas outlet end of said housing (2), the ends of the heat transfer elements of said set of heat transfer elements being fixed to said first and second manifolds.
    [0129] - And a first (3a) and second (3b) gas tanks connected to the transfer elements, respectively coupled to each gas tank (3a, 3b) on the outside of each manifold (6a, 6b). The respective gas tanks (3a, 3b) are superimposed on an external surface of the housing (2) and are connected by respective furnace welded joints to each part of the housing (2a, 2b).
    [0130] - The two parts (2a, 2b) of the housing, the two gas tanks (3a, 3b) and the two manifolds (6a, 6b) are made of an aluminum base material.
    [0131] - And the oven-welded joints of the two parts (2a, 2b) of the housing with each other and of the housings (2a, 2b) with each gas tank (3a, 3b) are made at the same time.
    [0132]
    [0133] In the attached Figures, the inner heat exchange tubes or plates are not appreciated, since they are completely covered by the enclosure (2a, 2b).
    [0134]
    [0135] Referring to Figures 1 and 1b, the provision of openings (5a, 5b) made on one side of the peripheral edge (10a) of coupling of each gas tank (3a, 3b) for the passage and coupling of the final part of the superimposed strip (2a '), in the already mounted position of the heat exchanger. In detail 1b it can be seen how the peripheral edge (10a) of the gas tank (3a) is machined with said opening (5a), in this case rectangular.
    [0136]
    [0137] Referring to Figure 2, the same heat exchanger for gases is shown, but just before mounting one of the two gas tanks (3a) in the housings (2a, 2b), so that a part of one of the two collectors (6a).
    [0138]
    [0139] Referring to Figures 1, 2, 3, 3b and 3c, a first embodiment of the invention is shown, in which each part (2a, 2b) of the housing has a hollow, cross-sectional body in the form of "U ", With an upper face, a lower face and a side face. In this first embodiment of the invention the corresponding joining surfaces in the joining area (4) of the two parts (2a, 2b) of the housing are formed by an overlapping strip (2a ') provided on the peripheral edge of one of the two parts (2a, 2b) of the housing that is superimposed on the peripheral edge of the other part (2b') of the housing, thus forming a welded joint in a flap oven.
    [0140]
    [0141] In particular reference to Figure 10, this same first embodiment is observed, but in which additionally fixing means (13) (for example a rivet without a TOX rivet) are fixed on the welded joint between housings, to strengthen the joint between housings Other fixing means other than screws may also be used in an equivalent manner.
    [0142]
    [0143] In particular reference to Figures 3b and 3c, it can be seen that the superimposed strip (2a ') only occupies a central part of the entire length of the joint area (4) between the peripheral edges of the housings (2a, 2b) , so that at both ends, anterior and posterior, of said junction zone there is a space without superimposed strip (2a '), and in which in these absent end zones of superimposed strip (2a') respective extensions are formed ( 7) extending transversely of the part of the housing that is arranged in the lower part of the overlap in the transverse direction towards the other part of the housing (see detail 3b). A possible embodiment of a half-shell (2b) according to this particular configuration is shown in Figures 11a to 11c. It has a "U" shaped configuration and on the respective extreme surfaces of the "U", respective overlapping strips (2a ’) are formed that extend in the form of an ascending step (see figure 11c).
    [0144]
    [0145] Other possible embodiments of the joint surfaces between parts (2a, 2b) of the enclosure are shown in Figures 4 to 10.
    [0146]
    [0147] Specifically, in Figure 4 said joining surfaces between parts (2a, 2b) are formed by the rectilinear peripheral edges (8) of each part (2a, 2b) of the housing that abut each other and are joined by a oven welded joint. Therefore, this connection does not protrude in height from the rest of the parts (2a, 2b) of the housing.
    [0148]
    [0149] Figure 5 is an alternative embodiment of Figure 4, in which the two parts (2a, 2b) of the housing have their respective slightly modified peripheral edges (10), so that one of the edges has an elongated longitudinal portion only in an upper part that is positioned on the surface of the other edge, where the other edge has a longitudinal surface recessed so that the elongated portion of the first edge can be received thereon. In this way, the joint in this case does not protrude in height from the rest of the housing surface.
    [0150] Figure 6 shows another configuration in which said joining surfaces are formed by respective longitudinal extensions (7) that extend perpendicularly upwards from the respective peripheral edges of both parts (2a, 2b). Said extensions (7) are joined together by their respective facing interior surfaces, by means of an oven-welded joint.
    [0151]
    [0152] In Figure 7 another configuration is shown in which said joining surfaces are formed by respective wound geometries (9) that extend from their respective peripheral edges and are wound and joined by an oven-welded joint.
    [0153]
    [0154] Figure 8 shows another configuration in which said joining surfaces are formed by complementary zig-zag-shaped surfaces (12) that are joined by an oven-welded joint.
    [0155]
    [0156] Figure 9 shows another configuration in which an additional elongated element (11) is incorporated which is fixed (by any known means) on the junction zone (4). It has a length sufficient to cover at least% parts of the entire length of the joint area between parts (2a, 2b) of the housing.
    [0157]
    [0158] A final configuration is shown in Figure 10, in which the two housing parts are joined in a similar manner to the first embodiment in the form of a flap-type joint and also by means of fixing means (13).
    [0159]
    [0160] Figures 12a to 12d are different views of a possible embodiment of one of the two gas tanks (3b). The indicated gas tanks (3b) have a conventional hollow geometry that decreases to form a circular hole, with a coupling edge opposite the hole, and where the coupling edge has a substantially rectangular configuration, with blunt edges, and with two major bases and two minor bases. In addition, it has the particularity that it presents respective central openings (5b) each arranged in the center of the peripheral edge (6a, 6b) of each major coupling base of each gas tank (3a, 3b) for positioning the part end of the superimposed strip (2nd '). In this case, it also presents, in one of its major bases, another second opening (5b ').
    [0161] Although reference has been made to a specific embodiment of the invention, it is apparent to one skilled in the art that the described heat exchanger for gases is susceptible to numerous variations and modifications, and that all the mentioned details can be replaced by others technically equivalent, without departing from the scope of protection defined by the appended claims.
    权利要求:
    Claims (15)
    [1]
    1. Heat exchanger (1) for gases, in particular for exhaust gases of a combustion engine, comprising:
    - a set of heat transfer elements intended for the circulation of exhaust gases,
    - a housing (2) with an elongated body shape that extends along a longitudinal direction, and that is open at their respective opposite ends, and inside which houses said heat transfer elements,
    - a first (6a) and second (6b) manifold respectfully coupled each at an inlet end and a gas outlet end of said housing and each manifold (6a, 6b) disposed within each end of the housing, being located fixed the ends of the heat transfer elements of said set of heat transfer elements to said first and second collectors,
    - a first (3a) and second (3b) gas tank connected to the transfer elements, respectively coupled to each gas tank on the outside of each manifold (6a, 6b);
    characterized in that:
    - the housing (2) is formed in two hollow parts (2a, 2b),
    - the two parts (2a, 2b) of the housing comprise corresponding joining surfaces at their respective peripheral edges,
    - the two parts (2a, 2b) of the housing are arranged facing each other and joined by their respective joint surfaces in a first and second joint area (4) forming a first and second joint welded to the furnace,
    - the respective gas tanks (3a, 3b) are superimposed on an external surface of the housing and are connected by respective welded joints to each part of the housing,
    - the two parts (2a, 2b) of the housing, the two gas tanks (3a, 3b) and the two manifolds (6a, 6b) are made of an aluminum base material, and
    - the oven-welded joints of the two parts (2a, 2b) of the housing with each other and of the housings (2a, 2b) with each gas tank (3a, 3b) are made at the same time.
    [2]
    2. Heat exchanger (1) according to claim 1, wherein the heat transfer elements of the set of heat transfer elements are formed by a bundle of tubes.
    [3]
    3. Heat exchanger (1) according to claim 1, wherein the heat transfer elements of the set of heat transfer elements are formed by plates.
    [4]
    4. Heat exchanger (1) according to any one of claims 1 to 3, wherein each part (2a, 2b) of the housing has a continuous hollow body, of a "U" shaped cross-section, with a face upper, a lower face and a lateral face.
    [5]
    5. Heat exchanger (1) according to any one of claims 1 to 4, wherein the corresponding joining surfaces the two parts (2a, 2b) of the housing comprise an overlapping strip (2a ') provided on the peripheral edge of one of the two parts (2a, 2b) of the housing that is superimposed on the peripheral edge of the other part (2b) of the housing, thus forming a welded joint in a flap-type furnace.
    [6]
    6. Heat exchanger (1) according to claim 5, wherein the superimposed strip (2a ') only occupies a central part of the junction zone between the peripheral edges of the housings (2a, 2b), so that in the two ends, anterior and posterior, of said joining zone there is no superimposed strip (2a '), and in which in these absent end zones of superimposed strip (2a') respective extensions are formed which extend transversely of the part of the housing that is arranged in the lower part of the overlap in the transverse direction towards the other part of the housing.
    [7]
    7. Heat exchanger (1) according to claim 6, wherein an opening (5a, 5b) is provided in the peripheral edge (6a, 6b) of coupling of each gas tank (3a, 3b) for the positioning of the final part of the superimposed strip (2a ').
    [8]
    8. Heat exchanger (1) according to any one of claims 1 to 4, wherein the joint surfaces for the two furnace welded joints between the two parts (2a, 2b) of the housing are formed by respective extensions ( 7) perpendicular upwards of the respective peripheral edges.
    [9]
    9. Heat exchanger (1) according to any one of claims 1 to 4, wherein the joint surfaces for the two furnace welded joints between the two parts (2a, 2b) of the housing are formed by the straight peripheral edges of each part of the housing that abut each other.
    [10]
    10. Heat exchanger (1) according to any one of claims 1 to 4, wherein the joint surfaces for the two furnace welded joints between the two parts (2a, 2b) of the housing are formed by rolled geometries.
    [11]
    11. Heat exchanger (1) according to any one of claims 1 to 4, wherein the joint surfaces for the two furnace welded joints between the two parts (2a, 2b) of the housing are formed by complementary surfaces in zigzag shape
    [12]
    12. Heat exchanger (1) according to any one of claims 1 to 11, wherein an additional elongate element is incorporated over the joining area, made of aluminum with a length sufficient to cover at least% parts of the entire length of the junction zone between parts (2a, 2b) of the housing.
    [13]
    13. Heat exchanger (1) according to any one of claims 1 to 12, wherein the respective manifolds (6a, 6b) have a peripheral edge extending in the longitudinal direction of the heat exchanger (1) and in the direction outside.
    [14]
    14. Heat exchanger (1) according to any one of claims 1 to 13, wherein the housing (2a, 2b), tubes or plates, gas tanks (3a, 3b) and manifolds (6a, 6b ) are made of multilayer aluminum formed by a sheet comprising at least two superimposed aluminum layers: a layer of core material and another layer of welding material, and additionally there may be another additional layer of protection, where the welding layer It is arranged on the surface of the material, either on the inner or outer face.
    [15]
    15. Heat exchanger (1) according to claim 14, wherein the gas tanks (6a, 6b) and the housings (2a, 2b) have the filling material located on the inner face of the component.
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    同族专利:
    公开号 | 公开日
    KR20190136993A|2019-12-10|
    ES2733747B2|2021-10-07|
    引用文献:
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    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201830520A|ES2733747B2|2018-05-31|2018-05-31|HEAT EXCHANGER FOR GASES, ESPECIALLY FOR EXHAUST GASES FROM AN ENGINE|ES201830520A| ES2733747B2|2018-05-31|2018-05-31|HEAT EXCHANGER FOR GASES, ESPECIALLY FOR EXHAUST GASES FROM AN ENGINE|
    KR1020190063682A| KR20190136993A|2018-05-31|2019-05-30|Heat exchanger for gases, especially exhaust gases of an engine|
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