# US 11,110,408 B2 · Mixer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,110,408 B2 - Document ID: US11110408B2 - Status: Granted - Kind: B2 - Application number: 16/848,160 - Filed: 2020-04-14 - Published: 2020-10-22 - Granted: 2021-09-07 - Earliest claimed: 2019-04-16 - Assignees: Eberspächer Exhaust Technology GmbH & Co. KG - Applicants: Eberspächer Exhaust Technology GmbH - Inventors: Enver Kurpejovic; Ruben Hass; Roland Schwarz; Adam Karch; Elke Preisser - Web page: https://patentgrep.com/patent/US11110408B2 ## CPC - B01F 25/4522: {the components being pressed through porous bodies, e.g. flat plates, blocks or cylinders, which obstruct the whole diameter of the tube (B01F25/45243 takes precedence)} - F01N 3/2066: {Selective catalytic reduction [SCR]} - F01N 13/08: Other arrangements or adaptations of exhaust conduits {(pipes, joints or supports therefor in general F16L; collecting or removing exhaust gases of vehicle engines in workshops B08B15/00, on highways E01C1/005)} - B01D 53/9431: {Processes characterised by a specific device} - B01D 2251/2067: Urea - B01F 23/2132: {using nozzles} - B01F 25/3131: {with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements} - B01F 2025/931: {Flow guiding elements surrounding feed openings, e.g. jet nozzles} - F01N 3/2892: {Exhaust flow directors or the like, e.g. upstream of catalytic device} - F01N 2240/20: a flow director or deflector - F01N 2260/14: for modifying or adapting flow area or back-pressure - F01N 2470/02: Tubes being perforated - F01N 2470/18: the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus - F01N 2610/02: the substance being ammonia or urea - F01N 2610/1453: Sprayers or atomisers; Arrangement thereof in the exhaust apparatus - B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06) - 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) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract A mixer for an exhaust system of an internal combustion engine includes a plate-shaped mixer body (26) with an incoming flow side (36) to be arranged oriented in the upstream direction in relation to an exhaust gas flow (HA1) and with an outflow side (38) to be arranged oriented in the downstream direction in relation to the exhaust gas flow (HA1), a first exhaust gas flow-through opening (30) in the mixer body (26), a reactant-receiving body (42) carried on the mixer body (26) in the area of the first exhaust gas flow-through opening (30), as well as a plurality of second exhaust gas flow-through openings (34) in the mixer body (26). The second exhaust gas flow-through openings (34) are arranged surrounding the first exhaust gas flow-through opening (30) in the mixer body (26). ## Claims ### Claim 1 A mixer for an exhaust system of an internal combustion engine, the mixer comprising: a plate-shaped mixer body with an incoming flow side to be arranged oriented in an upstream direction in relation to an exhaust gas flow directed in an exhaust gas principal flow direction, and with an outflow side to be arranged oriented in a downstream direction in relation to the exhaust gas flow; a first exhaust gas flow-through opening in the mixer body, wherein the first exhaust gas flow-through opening is configured so as to be elongated in a direction of a first exhaust gas flow-through opening longitudinal axis extending essentially at right angles to the exhaust gas principal flow direction; a reactant-receiving body carried on the mixer body in an area of the first exhaust gas flow-through opening, wherein the reactant-receiving body defines a reactant-receiving body flow-through duct, through which exhaust gas can flow, and wherein the reactant-receiving body has a V-shaped reactant-receiving area tapering in a direction of the first exhaust gas flow-through opening longitudinal axis; and a plurality of second exhaust gas flow-through openings in the mixer body, wherein the second exhaust gas flow-through openings are arranged surrounding the first exhaust gas flow-through opening in the mixer body; wherein, in association with at least one second exhaust gas flow-through opening, the mixer body comprises a bulge, which protrudes on the outflow side and is open on a side facing the first exhaust gas flow-through opening. ### Claim 2 (depends on 1) The mixer in accordance with claim 1, wherein: the first exhaust gas flow-through opening is configured with an opening edge protruding on the outflow side. ### Claim 3 (depends on 2) The mixer in accordance with claim 2, wherein: the reactant-receiving body is carried on the opening edge; or the reactant-receiving body is configured as protruding over the opening edge on the outflow side of the mixer body; or the reactant-receiving body is carried on the opening edge and the reactant-receiving body is configured as protruding over the opening edge on the outflow side of the mixer body. ### Claim 4 (depends on 1) The mixer in accordance with claim 1, wherein the bulge has an essentially spherical cap segment shape. ### Claim 5 (depends on 1) The mixer in accordance with claim 1, wherein: the reactant-receiving body comprises two mounting plate sections arranged bent at an angle to one another in the reactant-receiving area; and at least one reactant passage opening, which is open toward the reactant-receiving body flow-through duct, is provided in at least one of the mounting plate sections. ### Claim 6 (depends on 5) The mixer in accordance with claim 5, wherein: the reactant-receiving body has a central area, which has an essentially ring segment configuration and encloses the reactant-receiving body flow-through duct in some areas; and the mounting plate sections extend toward one another, essentially uncurved, starting from the central area. ### Claim 7 An exhaust system for an internal combustion engine, the exhaust system comprising: a mixer housing; a first exhaust gas-carrying conduit adjoining the mixer housing in an upstream end area of the mixer housing; a second exhaust gas-carrying conduit adjoining the mixer housing in a downstream end area of the mixer housing; a mixer arranged in a mixer carrying area of the mixer housing, wherein the mixer is arranged with an incoming flow side facing the first exhaust gas-carrying conduit, the mixer comprising: a plate-shaped mixer body with an incoming flow side arranged oriented in an upstream direction in relation to an exhaust gas flow directed in an exhaust gas principal flow direction in the first exhaust gas-carrying conduit and with an outflow side to be arranged oriented in a downstream direction in relation to the exhaust gas flow; a first exhaust gas flow-through opening in the mixer body, wherein the first exhaust gas flow-through opening is configured so as to be elongated in a direction of a first exhaust gas flow-through opening longitudinal axis extending essentially at right angles to the exhaust gas principal flow direction; a reactant-receiving body carried on the mixer body in an area of the first exhaust gas flow-through opening, wherein the reactant-receiving body defines a reactant-receiving body flow-through duct, through which exhaust gas can flow, and wherein the reactant-receiving body has a V-shaped reactant-receiving area tapering in a direction of the first exhaust gas flow-through opening longitudinal axis; and a plurality of second exhaust gas flow-through openings in the mixer body, wherein the second exhaust gas flow-through openings are arranged surrounding the first exhaust gas flow-through opening in the mixer body; and a reactant release device arranged downstream in relation to the mixer body at the mixer housing, for a release of reactant with a reactant principal direction of release directed toward the reactant-receiving body; wherein, in association with at least one second exhaust gas flow-through opening, the mixer body comprises a bulge, which protrudes on the outflow side and is open on a side facing the first exhaust gas flow-through opening. ### Claim 8 (depends on 7) The exhaust system in accordance with claim 7, wherein: the incoming flow side of the mixer body is arranged essentially at right angles to the exhaust gas principal flow direction; and a reactant principal direction of release is essentially at right angles to the exhaust gas principal direction of flow in the first exhaust gas-carrying conduit. ### Claim 9 (depends on 7) The exhaust system in accordance with claim 7, wherein: a flow deflection area is formed in the mixer housing adjoining the mixer carrying area; and an exhaust gas principal direction of flow in the mixer housing, downstream of the flow deflection area, is approximately at right angles to an exhaust gas principal direction of flow in the mixer housing upstream of the flow deflection area. ### Claim 10 (depends on 7) The exhaust system in accordance with claim 7, further comprising an exhaust gas treatment unit arranged in the first exhaust gas-carrying conduit. ### Claim 11 (depends on 10) The exhaust system in accordance with claim 10, wherein the exhaust gas treatment unit is comprised of an oxidation catalytic converter or a particle filter or an NOx storage catalytic converter, or any combination of an oxidation catalytic converter and a particle filter and an NOx storage catalytic converter. ### Claim 12 (depends on 7) The exhaust system in accordance with claim 7, further comprising an exhaust gas treatment unit arranged in the second exhaust gas-carrying conduit. ### Claim 13 (depends on 12) The exhaust system in accordance with claim 12, wherein the exhaust gas treatment unit is comprised of a selective catalytic reduction catalytic converter. ### Claim 14 (depends on 7) The exhaust system in accordance with claim 7, wherein: the first exhaust gas flow-through opening is configured so as to be elongated in a direction of a first exhaust gas flow-through opening longitudinal axis; or the first exhaust gas flow-through opening is configured with an opening edge protruding on the outflow side; or the first exhaust gas flow-through opening is configured so as to be elongated in a direction of a first exhaust gas flow-through opening longitudinal axis and the first exhaust gas flow-through opening is configured with an opening edge protruding on the outflow side. ### Claim 15 (depends on 14) The exhaust system in accordance with claim 14, wherein: the reactant-receiving body is carried on the opening edge; or the reactant-receiving body is configured as protruding over the opening edge on the outflow side of the mixer body; or the reactant-receiving body is carried on the opening edge and the reactant-receiving body is configured as protruding over the opening edge on the outflow side of the mixer body. ### Claim 16 (depends on 15) The exhaust system in accordance with claim 15, wherein: the reactant-receiving body has a reactant-receiving area; the reactant-receiving body defines a reactant-receiving body flow-through duct, through which exhaust gas can flow; the reactant-receiving body comprises two mounting plate sections arranged bent at an angle to one another in the reactant-receiving area; and a reactant passage opening, which is open toward the reactant-receiving body flow-through duct, is provided in one of the mounting plate sections. ### Claim 17 A mixer for an exhaust system of an internal combustion engine, the mixer comprising: a plate-shaped mixer body with an incoming flow side to be arranged oriented in an upstream direction in relation to an exhaust gas flow directed in an exhaust gas principal flow direction, and with an outflow side to be arranged oriented in a downstream direction in relation to the exhaust gas flow; a first exhaust gas flow-through opening in the mixer body, wherein the first exhaust gas flow-through opening is configured so as to be elongated in a direction of a first exhaust gas flow-through opening longitudinal axis extending essentially at right angles to the exhaust gas principal flow direction; a reactant-receiving body carried on the mixer body in an area of the first exhaust gas flow-through opening, wherein the reactant-receiving body defines a reactant-receiving body flow-through duct, through which exhaust gas can flow, and wherein the reactant-receiving body has a V-shaped reactant-receiving area tapering in a direction of the first exhaust gas flow-through opening longitudinal axis; a plurality of second exhaust gas flow-through openings in the mixer body, wherein the second exhaust gas flow-through openings are arranged surrounding the first exhaust gas flow-through opening in the mixer body; wherein the reactant-receiving body comprises two mounting plate sections arranged bent at an angle to one another in the reactant-receiving area, at least one reactant passage opening, which is open toward the reactant-receiving body flow-through duct, being provided in at least one of the mounting plate sections; and wherein the reactant-receiving body has a central area with an essentially ring segment configuration enclosing the reactant-receiving body flow-through duct in some areas, the mounting plate sections extending toward one another, essentially uncurved, starting from the central area.