US 11,916,268 B2
Conveying unit for a fuel cell system for conveying and/or controlling a gaseous medium
Andreas Gruenberger, Spraitbach (DE); Armin Richter, Leinfelden-Echterdingen (DE); and Hans-Christoph Magel, Reutlingen (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/279,892
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Aug. 6, 2019, PCT No. PCT/EP2019/071085
§ 371(c)(1), (2) Date Mar. 25, 2021,
PCT Pub. No. WO2020/064189, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 10 2018 216 299.9 (DE), filed on Sep. 25, 2018.
Prior Publication US 2022/0037686 A1, Feb. 3, 2022
Int. Cl. H01M 8/00 (2016.01); H01M 8/04089 (2016.01); F04F 5/16 (2006.01); H01M 8/04082 (2016.01)
CPC H01M 8/04097 (2013.01) [F04F 5/16 (2013.01); H01M 8/04201 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A conveying unit (1) for a fuel cell system (31) for conveying and/or recirculating a gaseous medium, the conveying unit (1) having a jet pump (4) which is driven by a propellant jet of the pressurized gaseous medium and a metering valve (6) having a nozzle (12), wherein the conveying unit (1) is constructed as a combined valve/jet pump arrangement (2), wherein the gaseous medium of the jet pump (4) is supplied by the metering valve (6), wherein the jet pump (4) has a base member (8), wherein the jet pump (4) is connected to an anode input (3) of a fuel cell (29), characterized in that there is brought about a redirection and/or direction change of the gaseous medium flowing in a flow direction VII from the jet pump (4) to the anode input (3) of the fuel cell (29) exclusively in a redirection region (22), wherein the jet pump (4) has a separate closure lid (5) which is connected to the base member (8) and wherein the redirection region (22) and/or the redirection and guiding geometry of the redirection region (22) for the gaseous medium is constructed exclusively in the closure lid (5).