• 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:
    The heat recovery device (1) comprises: - a valve body (7) internally defining a direct flow path (13) for the exhaust gases from an inlet (9) to an outlet (11); - a heat exchanger (5) having a passage (39) for the flow of exhaust gas opening into an inlet zone of the valve body (7); - a valve (15) disposed in the valve body (7). The heat recovery device (1) comprises a guide wall (57) arranged in the direct flow path (13) in line with the inlet zone (31), arranged to guide the exhaust gases from the entering the inlet zone (31) when the valve (15) clears the direct flow path (13), and defining at least one orifice (59) for passing the exhaust gases up to the inlet zone (31) when the valve (15) closes the direct flow path (13).
    公开号:FR3031140A1
    申请号:FR1463481
    申请日:2014-12-31
    公开日:2016-07-01
    发明作者:Yannick Godard；Julien Cabillic
    申请人:Faurecia Systemes dEchappement SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates generally to heat recovery devices for exhaust lines.
    [0002] More specifically, the invention relates, according to a first aspect, to an exhaust line heat recovery device, the device being of the type comprising: a valve body having at least one exhaust gas inlet and at least one exhaust gas outlet, the valve body internally defining a direct flow path for the exhaust gases from the inlet to the outlet; a heat exchanger between the exhaust gases and a heat transfer fluid, comprising an exhaust gas circulation passage and a heat transfer fluid circulation passage, the exhaust gas circulation passage having upstream and downstream ends; opening respectively into inlet and outlet areas of the valve body, respectively relatively closer to the inlet and relatively closer to the outlet along the direct path; - A valve disposed in the valve body, movable relative to the valve body at least between a heat exchange position in which the valve closes a cut-off section of the direct flow path and thus forces the flow of gas exhaust from the inlet to the outlet through the heat exchanger along the exhaust gas flow passage, and a short-circuit position in which the valve disengages said cut-off section from the direct passage path and closes the exit zone, the valve thereby forcing the flow of exhaust gases from the inlet to the outlet along the direct path, the cutoff section being located between the inlet zone and the outlet zone along the the direct passage way. When the valve is in the short-circuit position, the heat exchanger is inactive. Exhaust gases flow from the inlet to the outlet of the valve body along the direct path. However, residual heat transfer is observed from the exhaust gases to the heat transfer fluid. These residual heat transfers are also called parasitic losses. In this context, the invention aims to propose a heat recovery device in which the parasitic losses are reduced. To this end, the invention relates to a heat recovery device of the aforementioned type, characterized in that the heat recovery device comprises a guide wall disposed in the direct passage path to the right of the inlet zone, 3031140 2 arranged to guide the exhaust gas from the inlet to the cutoff section away from the inlet area when the valve is in the short-circuit position, and delimiting at least one orifice to let the exhaust gas to the inlet zone when the valve is in the heat exchange position.
    [0003] The guide wall, in that it deflects the exhaust gases away from the inlet zone of the exchanger when the valve is in the short-circuit position, reduces the amount of exhaust gas. penetrating into the heat exchanger through its entrance area. This quantity is significant, in the absence of guide wall. It helps to transfer heat to the coolant. The heat recovery device may also have one or more of the following characteristics, considered individually or in any technically possible combination: the guide wall is a tube, internally defining a conduit for the exhaust gases, the duct extending from an upstream opening upstream of the inlet zone to a downstream opening downstream of the inlet zone; the device comprises, in the cut-off section, at least one obstacle likely to hinder the flow of the exhaust gases, a downstream end portion of the guide wall being arranged to deflect the exhaust gases away from said Obstacle; the obstacle comprises a frame defining a sealing surface for the valve in the heat exchange position; the frame has an internal edge delimiting a central opening for the passage of the exhaust gases, the downstream end portion of the guide wall being connected to the inner edge; - The guide wall is delimited upstream by an upstream edge sealingly connected to an inner surface of the direct flow path; - The guide wall is separated from the valve body by a gas strip, at least to the right of the inlet zone; The heat exchanger comprises an envelope internally delimiting the circulation passage of the coolant fluid and pressed against the valve body, the casing having at least one opening closed by a wall of the valve body in which is formed the zone of 'Entrance ; and the valve carries a seal coming against the valve body in a short-circuit position, this seal being made of a metal knit.
    [0004] According to a second aspect, the invention relates to a vehicle exhaust line, comprising a heat recovery device having the above characteristics. Other features and advantages of the invention will emerge from the detailed description given below, by way of indication and in no way limitative, with reference to the appended figures, in which: FIG. 1 is a perspective view of a heat recovery device according to the invention; FIG. 2 is a perspective view similar to that of FIG. 1, one of the two half-shells forming the valve body and the guide wall being not shown, so as to reveal the internal structure; the valve body, the valve being in the short-circuit position; - Figure 3 is a view similar to that of Figure 2, a half of the guide wall being shown, the valve being in the heat exchange position; and FIG. 4 is a top view, in section, of the heat recovery device of FIGS. 1 to 3, the valve being a heat exchange position, with only one heat exchange tube being shown. The heat recovery device 1 shown in Figure 1 is intended to be inserted in the exhaust line of a vehicle. This vehicle is typically a motor vehicle, for example a car or a truck. This device is intended to recover a portion of the thermal energy of the exhaust gas, for example to transfer it to the engine coolant, or to the heating circuit of the passenger compartment. The device 1 comprises a valve 3 and a heat exchanger 5.
    [0005] The valve 3 comprises: - a valve body 7 having an exhaust gas inlet 9 and an exhaust gas outlet 11, the valve body 7 internally defining a direct flow path 13 for the exhaust gases; exhaust from entrance 9 to exit 11; a valve 15 disposed inside the valve body 7, and movable with respect to the valve body 7 between a heat exchange position (FIG. 3) in which the valve closes a cut-off section of the passageway 13 and thus forces the circulation of the exhaust gases from the inlet 9 to the outlet 11 through the heat exchanger, and a short-circuit position (FIG. 2) in which the valve 15 disengages said cut-off section of the direct flow path 13, and forces the circulation 35 of the exhaust gas from the inlet 9, to the outlet 11 along the direct pathway 13.
    [0006] The valve body 7 has a central axis C, which is also the central axis of the direct flow path 13. The valve 15 is rotatable relative to the valve body between its heat exchange and heat exchange positions. short circuit, about an axis 17, visible in Figure 3. 3. The valve 15 is integral with the axis 17. The valve 15 is for example moved by a crank 18. In the example shown, the body of valve 7 comprises two half-shells 25, 27 contiguous to each other by respective edges 29. The edges 29 are placed against each other in a contact plane substantially parallel to the axis 17. L The inlet 9 and the outlet 11 are each delimited for half by the half-shell 25, and for the other half by the half-shell 27. The spindle 17 is mounted on the half-shell 27. In a variant, the valve body is not formed of two half-shells, but is constituted in any other suitable manner.
    [0007] The valve body 7 further comprises an inlet zone 31 (FIG. 2) through which the exhaust gases can flow from the direct flow path 13 into the heat exchanger 5. It also comprises an exit zone 33 (FIG. 3), by which the exhaust gases from the heat exchanger 5 return to the direct flow path 13. As can be seen in FIGS. 2 and 3, the inlet zone 31 comprises a plurality of inlet holes 35, and the outlet area 33 has a plurality of outlet holes 37. The inlet area 31 is located along the direct pathway 13 between the inlet 9 and the cutoff section. The exit zone 33 is located along the direct pathway 13, between the cutoff section and the outlet 11.
    [0008] The heat exchanger 5 is provided so that the exhaust gases transfer part of their heat energy to a heat transfer fluid. It therefore comprises a passage 39 for circulation of the exhaust gas, and a passage 41 for circulating the coolant. The exhaust gas flowing through the circulation passage 39 is in thermal contact with the coolant flowing through the circulation passage 41.
    [0009] The exhaust gas circulation passage 39 has upstream and downstream ends opening respectively into the inlet and outlet zones 31, 33 of the valve body 7. In the exemplary embodiment shown, the heat exchanger 5 comprises a plurality of tubes 43, inside which circulate the exhaust gas. The tubes 43 thus delimit together, internally, the passage 39 for circulation of the exhaust gases. Each tube 43 is connected at one end to one of the inlet ports 35, and at its end opposite one of the outlet openings 37. In the example shown in the figures, the tubes each have a U-shape, and each have an upstream branch 45 connected to one of the inlet ports 35, a downstream branch 47 connected to one of the outlet ports 37, and a hanger 49 connecting the upstream and downstream branches 45, 47 to each other . The upstream and downstream branches are here substantially parallel to one another and substantially perpendicular to the input and output zones. The heat exchanger 5 further comprises a casing 51 internally delimiting a volume in which the tubes 43 are housed. The casing 51 has an inlet 53 for the heat transfer fluid, and an outlet 55 for the heat transfer fluid. Thus, the internal volume of the casing 51 internally defines the passage 41 for circulating the coolant. Alternatively, the heat exchanger may be of any other form, provided that the upstream and downstream ends of the exhaust gas flow passage open into the direct flow path 13 through respectively the inlet zone 31 and the outlet zone 33 of the valve body. The heat exchanger may for example be a tube exchanger whose tubes do not have a U-shape, or a plate heat exchanger or any other type of exchanger.
    [0010] The heat exchange position of the valve is shown in FIG. 3. The valve 15 closes the direct flow path 13 at the cut-off section. The exhaust gases are thus forced to flow from the inlet 9 to the inlet zone 31, from where they enter the heat exchanger 5, and then travel through the circulation passage 39 to the zone At the exit zone 33, they return to the inside of the direct flow path 13 and then flow to the outlet 11. The short-circuit position of the valve 15 is illustrated in FIG. 2. In this position, the valve 15 disengages the cut-off section of the direct flow path, and closes the exit zone 33. The exhaust gases are thus forced to flow from the inlet 9 to the outlet 11 on the along the direct path 13.
    [0011] According to the invention, the heat recovery device 1 comprises a guide wall 57, arranged in the direct flow path 13 to the right of the inlet zone 31. The guide wall 57 is arranged to guide the gases of the exhaust from the inlet 9 to the cutoff section away from the inlet area 31 when the valve 15 is in the short-circuit position.
    [0012] As can be seen in particular in FIG. 2, the inlet zone 31 is of limited size with respect to the total area of the valve body 7. It typically extends circumferentially over less than half of the perimeter of the valve body. preferably on less than one third of the perimeter of the valve body. According to the central axis C of the valve body, it extends over less than half the length of the valve body, preferably less than one third of the length of the valve body.
    [0013] The exit zone 33 has substantially the same dimension as the inlet zone 31. The guide wall 57 is located in line with the inlet zone 31 in the sense that it is interposed radially between the central axis C of the body The guide wall is arranged to guide the exhaust gas away from the inlet zone, in the sense that the flow lines which, in the absence of walls, are arranged in the absence of walls. of guiding, would pass near the inlet zone are deviated for the most part and pass away from the inlet zone 31. Similarly, the turbulence in the flow are reduced and therefore the parasitic gas flow arriving up to the input area 31 is also reduced.
    [0014] Furthermore, the guide wall 57 defines at least one orifice 59, to allow the exhaust gases to pass to the inlet zone 31 when the valve is in the heat exchange position, as shown in FIG. 3. Thus, in the heat exchange position of the valve 15, the exhaust gas flows from the inlet 9 through the orifice (s) 59 to the inlet zone 31 and then through the circulation passage. 39 of the heat exchanger 5. Typically, the orifices 59 are pierced in the guide wall 57. According to a non-preferred variant, they are formed between an edge of the guide wall and the valve body. According to a particularly advantageous embodiment, the guide wall 57 is a tube, internally defining a conduit 60 for the exhaust gas, the duct extending from an upstream opening 61 located upstream of the inlet zone 31. to a downstream opening 63 located downstream of the inlet zone 31. Considered perpendicular to the central axis C of the valve body, the tube has a closed section. It typically has a circular, or rectangular, or oval section or any other sectional shape. Thus, the exhaust gases circulate inside the conduit 60 and are deflected away from the inlet zone 31. The guide plate is typically made of steel. It has for example a thickness of less than 1.5 mm, so as to limit the thermal inertia of the system.
    [0015] Alternatively, the guide wall 57, considered in section perpendicular to the central axis, is not closed contour. It is open on one side, typically on a side opposite the input zone 31 with respect to the central axis C. As can be seen in FIG. 2 and in FIG. 3, the heat recovery device 1 comprises a frame 65 disposed in the cutting section. This frame 65 defines a sealing surface 67 (FIG. 4) against which the valve 15 bears in the heat exchange position. The frame 65 is a geometrical singularity likely to hinder the flow of exhaust gas when the valve 15 is in the short-circuit position.
    [0016] More precisely, in the absence of the guide wall 57, the frame 65 will generate recirculations within the exhaust gas flow, which are partly responsible for the parasitic losses in addition to an increase in the against pressure. These recirculations cause part of the exhaust gas to the inlet zone 31 and then inside the heat exchanger 5.
    [0017] The device may comprise other obstacles, in the cut-off section or at any point located between the input zone 31 and the output zone 33, for example the axis 17 of the valve or other formed parts or reliefs. In a particularly advantageous aspect of the invention, a downstream end portion 69 of the guide wall 57 is arranged to deflect the exhaust gases away from the obstacle (s). Thus, the flow of exhaust gas no longer forms recirculation contributing to direct a portion of the exhaust gas to the inlet zone. In the example shown, the frame 65 has an inner edge 71, delimiting a central opening 73 for the passage of the exhaust gas. The sealing surface 67 surrounds the central opening 73. The downstream end portion 69 of the guide wall 57 is connected, preferably sealingly, to the inner edge 71. Typically, the downstream end portion 69 is connected to the inner edge over the entire periphery of the opening 73.
    [0018] Typically, the downstream end portion 69 terminates with a downstream edge 74 which is placed against the peripheral edge 71 and is welded thereto. When the guide wall 57 is not closed contour, the downstream end portion 69 is connected only to a portion of the inner edge 71, typically the portion facing the inlet zone 31.
    [0019] Alternatively, there is a clearance between the guide wall 57 and the frame 65, more precisely between the downstream end portion 69 and the frame inner edge 71.
    [0020] In the example shown in FIG. 3, the guide wall 57 is delimited upstream by an upstream edge 75, sealingly connected to an internal surface of the direct flow path 13. Thus, the gases of FIG. Exhaust does not infiltrate between the guide wall 57 and the valve body 7, and thus does not flow to the inlet zone 31. The upstream edge 75 typically delimits the upstream opening 61 of the conduit. Furthermore, the downstream opening 63 coincides in the example shown with the central opening 73 of the frame. Typically, the upstream edge 75 is closed-contour, and is connected to the inner surface of the direct path 13 throughout the periphery thereof. It is placed for example in coincidence with the exhaust gas inlet 9, or shifted slightly towards the inside of the passageway with respect to the inlet 9. For example, it is welded to the valve body 7 of waterproof way. As can be seen in FIGS. 3 and 4, the guide wall 57 is separated from the valve body 7 by a gas strip 77, at least in line with the inlet zone 31. In other words, there is a gas layer between the guide wall 57 and the valve body 7. Preferably, the gas strip 77 extends over the entire periphery of the guide wall 57, when the guide wall is a tube. The gas strip typically has a thickness greater than or equal to 2 mm.
    [0021] This has the advantage of reducing the heat transfer from the exhaust gases to the valve body 7. This is particularly advantageous in the configuration of the heat exchanger 5 shown in FIGS. 2 and 3, namely when the it is pressed against the wall 79 of the valve body. The inlet zone 31 and the outlet zone 33 are zones 25 of the wall 79. For example, the envelope 51 has an opening, this opening being closed by the wall 79. The opposite ends of the tubes 43 pass through the wall 79. opening. In this case, the fact of reducing the heat transfer of the exhaust gases towards the wall 79 contributes to very effectively limiting the parasitic losses, in particular because the coolant is in contact with the wall 79. The invention is particularly advantageous when the valve carries a metal knit seal 81, bearing against the valve body 7 in the short-circuit position. The seal 81 bears against a sealing surface formed on the valve body 7, around the exit zone 33. The seal 81 makes it possible to damp the vibrations generated in the valve 15 by the circulation of the exhaust gases. These vibrations are only slightly or little transferred to the valve body 7. This contributes in particular to reducing the noise generated by the heat recovery device 1. Moreover, the metal knit seal 81 ensures a seal between the valve 15. and the valve body 7. However, this seal is not perfect, which contributes to the circulation of the exhaust gases through the heat exchanger in the short-circuit position of the valve, in the absence of the guide wall 57. In the presence of the guide wall 57, in the short-circuit position of the valve 15, the gas blade 77 is at a pressure lower than the pressure at the outlet 11 of the valve body. Thus, it is surprisingly observed that the exhaust gases flow not from the gas strip 77 to the exit zone 33 and then the exit 11, but inversely from the exit zone 33 to the gas 77 through the heat exchanger, and more precisely, through the circulation passage 39. This circulation, by mass, is much lower than the traffic occurring in the opposite direction in the absence of guide wall 57.
    [0022] It should also be noted that, particularly when the device has an obstacle in the cut-off section, the guide wall makes it possible to reduce the pressure drops for the exhaust gases flowing along the direct path. The number and the area of the orifices 59 are chosen so that the guide wall 57 has only a slight impact on the operation of the heat exchanger when the valve is in the heat exchange position. In practice, the orifices 59 are gathered in the zone of the guide wall situated in line with the inlet zone 31. In a variant, there are other orifices 59, in other zones of the guide wall 57. The guide wall 57 does not increase the pressure drop for the exhaust gases significantly in the heat exchange position of the valve 15.
    [0023] Furthermore, because there is a gas gap between the guide wall and the valve body 7, this valve body is thermally insulated from the exhaust gas by the gas blade. The valve body therefore has at the guiding wall a temperature lower than the temperature in the absence of guide wall and gas blade. As a result, the thermomechanical stresses in the valve body are lower. The valve body 7 therefore undergoes smaller deformations, and the fasteners of the two half-shells 25, 27 to one another are less stressed. Since all the parts of the heat recovery device on the inlet side 9 are less thermomechanically stressed, it is possible to reduce the thickness of the materials, and thus reduce the thermal inertia of the device.
    [0024] Furthermore, because the parasitic losses are reduced in the presence of the guide wall, the seal between the valve in the short-circuit position and the valve body 3031140 is less critical. It becomes possible to use as a seal a less expensive material, providing a lower level of tightness. 5
    权利要求:
    Claims (10)
    [0001]
    CLAIMS1.- Exhaust line heat recovery device (1), the device comprising: - a valve body (7) having at least one exhaust gas inlet (9) and at least one outlet (11) exhaust gas system, the valve body (7) internally defining a direct flow path (13) for the exhaust gas from the inlet (9) to the outlet (11); - a heat exchanger (5) between the exhaust gas and a heat transfer fluid, comprising a passage (39) for the circulation of exhaust gas and a passage (41) for circulation of the coolant, the passage (39) of exhaust gas circulation having upstream and downstream ends respectively opening into inlet and outlet areas (31, 33) of the valve body (7), respectively relatively closer to the inlet (9) and relatively closer to the exit (11) along the direct path (13); - a valve (15) disposed in the valve body (7), movable relative to the valve body (7) at least between a heat exchange position in which the valve (15) closes a path cut section direct passage (13) and thereby forces the flow of exhaust gas from the inlet (9) to the outlet (11) through the heat exchanger (5) along the gas flow passage (39) exhaust, and a short-circuit position in which the valve (15) releases said cut-off section of the direct flow path (13) and closes the exit zone (33), the valve (15) thus forcing the circulation exhaust gases from the inlet (9) to the outlet (11) along the direct flow path (13), the cutoff section being located between the inlet zone (31) and the outlet zone ( 33) along the direct path (13); characterized in that the heat recovery device (1) comprises a guide wall (57) arranged in the direct flow path (13) to the right of the inlet zone (31), arranged to guide the gases of exhaust from the inlet to the cut-off section away from the inlet area (31) when the valve (15) is in the short-circuit position, and delimiting at least one orifice (59) for passing the exhaust gas to the inlet zone (31) when the valve (15) is in the heat exchange position.
    [0002]
    2.- Device according to claim 1, characterized in that the guide wall (57) is a tube, internally defining a conduit (60) for the exhaust gas, the conduit (60) extending from an upstream opening (61) upstream of the inlet zone (31) to a downstream opening (63) downstream of the inlet zone (31). 3031140 12
    [0003]
    3.- Device according to any one of claims 1 to 2, characterized in that the device comprises in the cutting section at least one obstacle capable of impeding the flow of exhaust gas, a downstream end portion ( 69) of the guide wall (57) being arranged to deflect the exhaust gases away from said obstacle.
    [0004]
    4.- Device according to claim 3, characterized in that the obstacle comprises a frame (65) defining a sealing surface (67) for the valve (15) in the heat exchange position.
    [0005]
    5.- Device according to claim 4, characterized in that the frame (65) has 10 an inner edge (71) defining a central opening (73) for the passage of the exhaust gas, the downstream end portion (69) ) of the guide wall (57) being connected to the inner edge (71).
    [0006]
    6.- Device according to any one of claims 1 to 5, characterized in that the guide wall (57) is delimited upstream by an upstream edge (75) sealingly connected to an inner surface of the path direct passage (13).
    [0007]
    7.- Device according to any one of claims 1 to 6, characterized in that the guide wall (57) is separated from the valve body by a gas strip (77), at least to the right of the zone of entrance (31).
    [0008]
    8.- Device according to any one of claims 1 to 7, characterized in that the heat exchanger (5) comprises a casing (51) internally defining the passage (41) for circulating the coolant and pressed against the valve body (7), the casing (51) having at least one opening closed by a wall (79) of the valve body (7) in which is formed the inlet area (31).
    [0009]
    9.- Device according to any one of claims 1 to 8, characterized in that the valve (15) carries a seal (81) to bear against the valve body (7) in the short-circuit position, this seal (81) being in a metallic knit.
    [0010]
    10.- Vehicle exhaust line comprising a heat recovery device (1) according to any one of the preceding claims. 30
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    US20120144814A1|2010-12-09|2012-06-14|Hyundai Motor Company|Exhaust heat recovery apparatus for vehicle|
    FR2989998A1|2012-04-26|2013-11-01|Faurecia Sys Echappement|Device for use in exhaust line to recover part of heat energy from exhaust gases to transfer energy to e.g. coolant of engine of e.g. car, has tubes located in plan shifted toward outside of body relative to lateral wall|
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    EP2803843A1|2013-05-14|2014-11-19|Scambia Holdings Cyprus Limited|Unit for recovering thermal energy from exhaust gas of an internal combustion engine|WO2018103898A1|2016-12-09|2018-06-14|Faurecia Systemes D'echappement|Exhaust heat recuperation device, with improved sealing|
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    EP3805535A4|2018-05-22|2021-04-14|Marelli Corporation|Exhaust heat recovery device|JP2009030569A|2007-07-30|2009-02-12|Futaba Industrial Co Ltd|Exhaust heat recovery device|
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    FR2966873B1|2010-10-27|2012-12-21|Faurecia Sys Echappement|HEAT RECOVERY DEVICE FOR EXHAUST LINE|
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    DE102014110616A1|2014-07-28|2016-01-28|Tenneco Gmbh|Valve housing with valve flap|JP6783836B2|2018-09-19|2020-11-11|株式会社前川製作所|Plate polymer and heat exchanger|
    US11041459B2|2018-12-07|2021-06-22|Tenneco Automotive Operating Company Inc.|Exhaust gas heat recovery system|
    US11022069B2|2018-12-07|2021-06-01|Tenneco Automotive Operating Company Inc.|Exhaust gas heat recovery system|
    US11208934B2|2019-02-25|2021-12-28|Cummins Emission Solutions Inc.|Systems and methods for mixing exhaust gas and reductant|
    US10961923B2|2019-07-26|2021-03-30|Tenneco Automotive Operating Company Inc.|Externally mounted in-line exhaust gas valve|
    DE102020105563A1|2020-03-02|2021-09-02|Faurecia Emissions Control Technologies, Germany Gmbh|Exhaust device and vehicle|
    法律状态:
    2015-12-17| PLFP| Fee payment|Year of fee payment: 2 |
    2016-07-01| PLSC| Publication of the preliminary search report|Effective date: 20160701 |
    2016-12-27| PLFP| Fee payment|Year of fee payment: 3 |
    2017-12-27| PLFP| Fee payment|Year of fee payment: 4 |
    2019-12-26| PLFP| Fee payment|Year of fee payment: 6 |
    2020-12-27| PLFP| Fee payment|Year of fee payment: 7 |
    2021-11-17| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1463481|2014-12-31|
    FR1463481A|FR3031140B1|2014-12-31|2014-12-31|HEAT RECOVERY DEVICE AND EXHAUST LINE EQUIPPED WITH SUCH A DEVICE|FR1463481A| FR3031140B1|2014-12-31|2014-12-31|HEAT RECOVERY DEVICE AND EXHAUST LINE EQUIPPED WITH SUCH A DEVICE|
    KR1020177018150A| KR101974764B1|2014-12-31|2015-12-30|Heat recovery device and exhaust line fitted with such device|
    DE112015005850.8T| DE112015005850T5|2014-12-31|2015-12-30|Heat recovery device and equipped with such a device exhaust pipe|
    PCT/EP2015/081410| WO2016107899A1|2014-12-31|2015-12-30|Heat recovery device and exhaust line fitted with such device|
    US15/540,345| US10337382B2|2014-12-31|2015-12-30|Heat recovery device and exhaust line fitted with such device|
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