# US 10,873,095 B2 · Driving pressure adjusting valve device for fuel cell system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,095 B2 - Document ID: US10873095B2 - Status: Granted - Kind: B2 - Application number: 16/144,248 - Filed: 2018-09-27 - Published: 2019-10-24 - Granted: 2020-12-22 - Earliest claimed: 2018-04-18 - Assignees: Hyundai Motor Company; Kia Motors Corporation - Applicants: Hyundai Motor Company; Kia Motors Corporation - Inventors: Jeong Hee Park; Byeong Seung Lee; Kyoung Ku Ha; Hyunyoo Kim - Web page: https://patentgrep.com/patent/US10873095B2 ## CPC - F16K 1/2014: {Shaping of the valve member} - H01M 8/04104: {Regulation of differential pressures} - F16K 1/205: {the sealing being arranged on the valve member} - F16K 25/00: Details relating to contact between valve members and seats (movement of valve members other than for opening and closing F16K29/00) - F16K 47/045: {and the closure member being rotatable} - H01M 8/04089: of gaseous reactants - H01M 8/04097: {with recycling of the reactants (H01M8/04119, H01M8/04104 take precedence)} - H01M 8/04141: {by water containing exhaust gases} - H01M 8/04761: {of fuel cell exhausts} - H01M 8/04783: {Pressure differences, e.g. between anode and cathode} - F16K 1/32: Details (details of more general applicability F16K25/00 - F16K51/00) - Y02E 60/50: Fuel cells - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A valve device includes: a valve housing having a valve passage connected with an air flow passage; a valve disk rotatably disposed inside the valve housing through a valve driver and changing air flow cross-section of the valve passage; and a porous member installed at the valve disk and positioned in an open section between the valve disk and the valve passage. ## Claims ### Claim 1 A valve device, comprising: a valve housing having a valve passage connected with an air flow passage of an exhaust system; a valve disk rotatably disposed to be spaced apart from the valve passage inside the valve housing through a valve driver and adjusting an air flow cross-section of the valve passage; and a porous member attached to the valve disk and disposed in an open section between the valve disk and the valve passage, wherein the porous member includes a mesh foam having a predetermined porosity. ### Claim 2 (depends on 1) The valve device of claim 1, wherein the exhaust system releases an air exhausted from a humidifier of a fuel cell system to atmosphere. ### Claim 3 (depends on 2) The valve device of claim 2, wherein the valve device changes the air flow cross-section of the valve passage through the valve disk and adjusts a pressure of a fuel cell stack of the fuel cell system. ### Claim 4 (depends on 1) The valve device of claim 1, wherein the valve disk is tilted around a valve shaft, which is connected with the valve driver, has a flap disk shape and changes the air flow cross-section of the valve passage. ### Claim 5 (depends on 1) The valve device of claim 1, wherein the porous member is attached to one surface of the valve disk corresponding to an opening end of the valve passage. ### Claim 6 (depends on 1) The valve device of claim 1, wherein the valve disk includes open sections, each of which having a different area from each other with respect to the valve passage, and wherein the porous member has a porosity in an open section having a smallest area among the open sections different from porosities of the remaining opening sections. ### Claim 7 (depends on 6) The valve device of claim 6, wherein the porous member has a porosity of being getting smaller as an area of each of the open sections becomes larger. ### Claim 8 A valve device, comprising: a valve housing having a valve passage connected with an air flow passage; a valve disk rotatably installed at the valve housing through a valve driver and changing air flow cross-section of the valve passage; a porous member installed at the valve disk and positioned in an open section between the valve disk and the valve passage; and a mesh plate installed at the valve passage and supporting the porous member, wherein the porous member is provided to be compressed and restored by rotation of the valve disk between the valve disk and the mesh plate. ### Claim 9 (depends on 8) The valve device of claim 8, wherein the porous member is compressed by the valve disk in a state of being supported by the mesh plate, and a porosity changes according to a degree of compression. ### Claim 10 A valve device, comprising: a valve housing provided with a valve passage connected with an air flow passage of an exhaust system; a valve disk rotatably disposed inside the valve housing through a valve driver and adjusting an air flow cross-section of the valve passage; a mesh plate installed at the valve passage and supporting the porous member; and a porous member attached to one side of the mesh plate corresponding to the valve disk and disposed in an open section between the valve disk and the valve passage, wherein the valve disk compresses and restores the porous member by rotation of the valve disk between the valve disk and the mesh plate. ### Claim 11 (depends on 10) The valve device of claim 10, wherein the porous member is compressed by the valve disk in a state of being supported by the valve disk, and a porosity changes according to a degree of compression. ### Claim 12 (depends on 8) The valve device of claim 8, wherein the porous member includes a mesh foam. ### Claim 13 (depends on 10) The valve device of claim 10, wherein the porous member includes a mesh foam.