# US 11,111,933 B2 · Passive fluidic valve for fixed flow rate distribution > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,111,933 B2 - Document ID: US11111933B2 - Status: Granted - Kind: B2 - Application number: 16/849,240 - Filed: 2020-04-15 - Published: 2020-10-22 - Granted: 2021-09-07 - Earliest claimed: 2019-04-17 - Assignees: Safran Aero Boosters SA - Applicants: Safran Aero Boosters S.A. - Inventors: Quentin Desclee; Maxime Vandenbroucke - Web page: https://patentgrep.com/patent/US11111933B2 ## CPC - F15B 13/022: {Flow-dividers; Priority valves} - B64C 13/00: Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers - G05D 11/03: without auxiliary power - F15B 2211/40507: with constant throttles or orifices - F15B 2211/40523: with flow dividers - F15B 2211/4053: using valves - F15B 2211/428: actuated by fluid pressure - F15B 2211/57: Control of a differential pressure - F16K 11/065: with linearly sliding closure members - F16K 27/04: of sliding valves - H01M 8/00: Fuel cells; Manufacture thereof - F15B: SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR - B64C: AEROPLANES; HELICOPTERS - G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES - 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 ## Abstract A passive fluidic valve for fixed flow rate distribution comprising: a hollow valve body; a valve member for blocking a passage to one of the two outlets; and communications to impose the pressure of the upstream and downstream cavities at the ends of the valve member. The valve body further comprises: an inlet; a first outlet comprising a first restriction delimiting an upstream cavity and a downstream cavity; a second outlet comprising a second restriction delimiting an upstream cavity and a downstream cavity; and a first and a second cavity. The valve member further comprises: a first end in the first cavity delimiting a first and a third chambers, and a second end in the second cavity delimiting a second and a fourth chambers. ## Claims ### Claim 1 A passive fluidic valve for a hydraulic circuit of an equipment of an aircraft comprising: a hollow valve body comprising: an inlet; a first outlet comprising a first restriction delimiting an upstream cavity of first outlet and a downstream cavity of first outlet; a second outlet comprising a second restriction delimiting an upstream cavity of second outlet and a downstream cavity of second outlet; a first cavity; and a second cavity, a valve member movable in the valve body configured to at least partially block a passage between said inlet and one of the two outlets, comprising: a first end located in the first cavity so as to at least partially delimit a first and a third chambers in said first cavity, a second end located in the second cavity so as to at least partially delimit a second and a fourth chambers in said second cavity, a first fluid communication between said first chamber and said upstream cavity of first outlet; a second fluid communication between said third chamber and said downstream cavity of first outlet; a third fluid communication between said second chamber and said upstream cavity of second outlet; and a fourth fluid communication between said fourth chamber and said downstream cavity of second outlet. ### Claim 2 (depends on 1) The fluidic valve according to claim 1, wherein said upstream cavity of first outlet is distinct from said upstream cavity of second outlet. ### Claim 3 (depends on 1) The fluidic valve according to claim 1, wherein said inlet on the one hand and said first and second outlets on the other hand are positioned upstream and downstream with respect to said valve member in a normal direction of fluid flow when the fluidic valve is in operation. ### Claim 4 (depends on 3) The fluidic valve according to claim 3, wherein the hollow valve body further comprises: a first inner wall comprising a first opening and at least partially defining said first cavity, and a second inner wall comprising a second opening and at least partially defining said second cavity, said valve member passing through said first and second inner walls via their first and second openings. ### Claim 5 (depends on 4) The fluidic valve according to claim 4, wherein the valve member further comprises: a first and a second intermediate portions each configured to at least partially block a passage between said inlet and one of the two outlets, such that: said first intermediate portion at least partially delimits a first intermediate chamber with said first inner wall; and said second intermediate portion at least partially delimits a second intermediate chamber with said second inner wall. ### Claim 6 (depends on 5) The fluidic valve according to claim 5, comprising: a first intermediate fluid communication between said first intermediate chamber and said inlet, and a second intermediate fluid communication between said second intermediate chamber and said inlet. ### Claim 7 (depends on 5) The fluidic valve according to claim 5, wherein the first intermediate portion and the second intermediate portion form a first and a second variable restrictions with the first and second outlets respectively. ### Claim 8 (depends on 1) The fluidic valve according to claim 1, wherein said first end is fitted in said first cavity, and said second end is fitted in said second cavity, so that the first and second chambers are sealed from the third and fourth chambers respectively. ### Claim 9 (depends on 1) The fluidic valve according to claim 1, wherein: said first end delimiting said first and third chambers in said first cavity has a section having a first end area S1, and said second end delimiting said second and fourth chambers in said second cavity has a section having a second end area S2, such that said first end area S1 is equal to said second end area S2. ### Claim 10 (depends on 1) The fluidic valve according to claim 1, wherein: said first end delimiting said first and third chambers in said first cavity has a section having a first end area S1, and said second end delimiting said second and fourth chambers in said second cavity has a section having a second end area S2, such that said first end area S1 is larger than said second end area S2. ### Claim 11 (depends on 1) The fluidic valve according to claim 1, wherein: said first restriction has a first passage section R1, and said second restriction has a second passage section R2, such that said first passage section R1 is equal to said second passage section R2. ### Claim 12 (depends on 1) A hydraulic circuit for an equipment of an aircraft comprising the fluidic valve according to claim 1. ### Claim 13 (depends on 1) A fuel cell system comprising the fluidic valve according to claim 1. ### Claim 14 (depends on 1) A turbomachine for an aircraft comprising the fluidic valve according to claim 1. ### Claim 15 (depends on 1) An aircraft comprising the fluidic valve according to claim 1.