# US 2009/0260786 A1 · U-flow heat exchanger > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2009/0260786 A1 - Document ID: US20090260786A1 - Status: Published application - Kind: A1 - Application number: 12/425,724 - Filed: 2009-04-17 - Published: 2009-10-22 - Earliest claimed: 2008-04-17 - Assignees: Dana Canada Corporation - Inventors: Herve Palanchon - Web page: https://patentgrep.com/patent/US20090260786A1 ## CPC - F28D 9/0031: {the conduits for one heat-exchange medium being formed by paired plates touching each other (F28D9/0012, F28D9/0025, F28D9/0081, F28D9/04 take precedence)} - F02M 26/32: Liquid-cooled heat exchangers - F28F 9/02: Header boxes; End plates - F28F 13/06: by affecting the pattern of flow of the heat-exchange media {(F28F13/003 takes precedence; static flow control means in header boxes F28F9/026)} - F01N 2240/02: a heat exchanger - F28D 21/0003: {the heat being recuperated from exhaust gases (F28D21/0014 takes precedence)} - F28F 2250/102: with change of flow direction - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) ## Abstract A heat exchanger that comprises (a) a plurality of stacked tubular members defining a first set of flow passages for a first fluid through the tubular members and a second set of flow passages for a second fluid between adjacent tubular members, and (b) a tank connected to a first end of the stacked tubular members, the tank defining inlet and outlet manifolds in communication with inlet and outlet openings, respectively of the first set of flow passages for distributing the first fluid to and collecting the first fluid from the first set of flow passages, the tank defining a plurality of wall portions each having a first side facing at least one of the inlet and outlet manifolds and an opposite side facing a respective one of the second set of flow passages such that the wall portions provide heat exchanger interfaces between the first and second fluids. ## Claims ### Claim 1 A heat exchanger 10 comprising: a manifold structure 26 defined by a pair of stacked plates 70,72 which define a void, one of the plates 70 having a plurality of bosses 84 which project into the void and the other 72 of the plates having a plurality of protuberances 100 which engage between the bosses 84 so as to separate the void into a pair of manifolds 32,34; and a heat exchange element 12 formed of a plurality of stacked plates 22,24, the plates 22,24 defining a stack of tubes 16 which stack interiorly defines a first plurality of U-shaped passages 18, the tubes 16 being received in plug-fit relation by the bosses 84 so that the each of the first plurality of U-shaped passages 18 lead from one 32 of the pair of manifolds to the other 34 of the pair of manifolds. ### Claim 2 (depends on 1) A heat exchange assembly including: the heat exchanger of claim 1; and a housing element 200 having a first portion 202 defining an open socket 201, the pair of manifolds 32,34 being disposed outside the open socket 201 and the heat exchange element 12 being fitted within the open socket 201. ### Claim 3 (depends on 2) A heat exchange assembly according to claim 2, wherein the housing element 200 has a second portion 204 defining a valve housing having an inlet 206 and an outlet 208 and a pair of ports 210,212; and the plates 22,24 define, in combination with the first portion 202 of the housing element, a second plurality of U-shaped passages 20 interleaved between the first plurality of U-shaped passages 18, each of the second plurality of U-shaped passages 20 leading from the one of the ports 210, into the open socket 201, and back to the other 212 of the ports. ### Claim 4 (depends on 3) A heat exchange assembly according to claim 3, further comprising a valve body 216 movable between a bypass position, wherein fluids introduced into the inlet pass 206 directly to the outlet 208, and an active position, wherein fluids introduced are directed past the heat exchange element 12. ### Claim 5 (depends on 2) A heat exchanger assembly according to claim 2, wherein the one 70 of the plates has a pair of outer bosses 88 which project from the void and lead one into each of the manifolds 32,34; the plates have peripheral planar sections 74,78 which can be stacked together to define a flange for mounting to the housing element 200; and the other 72 of the plates has a central hollow in which the protuberances 100 are formed. ### Claim 6 An exhaust gas cooler comprising: a manifold structure 26 defined by a pair of stacked plates 70,72 which define a void, one 70 of the plates having a plurality of bosses 84 which project into the void and the other of the plates having a plurality of protuberances 100 which engage between the bosses 84 so as to separate the void into a pair of manifolds 32,34; and a heat exchange element 12 formed of a plurality of stacked plates 22,24, the plates 22,24 defining a stack of tubes 16 which stack interiorly defines a plurality of U-shaped coolant passages 18, the tubes 16 being received in plug-fit relation by the bosses 84 so that the each of the first plurality of U-shaped coolant passages 18 lead from one 32 of the pair of manifolds to the other 34 of the pair of manifolds. ### Claim 7 (depends on 6) A cooler according to claim 6, further comprising a housing element 200 having a first portion 202 defining an open socket 201, the pair of manifolds 32,34 being disposed outside the open socket 201 and the heat exchange element 12 being fitted within the open socket 201. ### Claim 8 (depends on 7) A cooler according to claim 7, wherein the housing element 200 has a second portion 204 defining a valve housing having an inlet 206 and an outlet 208 and a pair of ports 210,212; and the plates 22,24 define, in combination with the first portion 202 of the housing element, a plurality of U-shaped exhaust gas passages 20 interleaved between the plurality of U-shaped coolant passages 18, each of the plurality of U-shaped exhaust gas passages 20 leading from the one of the ports 210, into the open socket 201, and back to the other 212 of the ports. ### Claim 9 (depends on 8) A cooler according to claim 8, further comprising a valve body 216 movable between a bypass position, wherein exhaust gas introduced into the inlet 206 pass directly to the outlet 208, and an active position, wherein exhaust gas introduced is directed past the heat exchange element 12. ### Claim 10 A heat exchanger comprising: a plurality of stacked tubular members defining a first set of flow passages for a first fluid through the tubular members and a second set of flow passages for a second fluid between adjacent tubular members, and a tank connected to a first end of the stacked tubular members, the tank defining inlet and outlet manifolds in communication with inlet and outlet openings, respectively of the first set of flow passages for distributing the first fluid to and collecting the first fluid from the first set of flow passages, the tank defining a plurality of wall portions each having a first side facing at least one of the inlet and outlet manifolds and an opposite side facing a respective one of the second set of flow passages such that the wall portions provide heat exchanger interfaces between the first and second fluids.