US 12,366,332 B2
Fuel cell system, gas tank device and shut-off valve for a gas tank device
Andreas Rau, Stuttgart (DE); Joachim Soubari, Ettlingen (DE); and Udo Schaich, Stuttgart (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 18/565,823
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed May 18, 2022, PCT No. PCT/EP2022/063416
§ 371(c)(1), (2) Date Nov. 30, 2023,
PCT Pub. No. WO2022/258327, PCT Pub. Date Dec. 15, 2022.
Claims priority of application No. 10 2021 205 810.8 (DE), filed on Jun. 9, 2021.
Prior Publication US 2024/0255109 A1, Aug. 1, 2024
Int. Cl. F17C 13/04 (2006.01); F16K 31/06 (2006.01)
CPC F17C 13/04 (2013.01) [F16K 31/0606 (2013.01); F16K 31/0651 (2013.01); F16K 31/0675 (2013.01); F16K 2200/301 (2021.08); F17C 2205/0326 (2013.01); F17C 2205/0385 (2013.01); F17C 2205/0391 (2013.01); F17C 2223/0123 (2013.01); F17C 2223/036 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A shut-off valve (100) for a gas tank device (200), comprising:
a housing (1) which has an inlet opening (11) for connecting to a high-pressure tank (210), an outlet opening (12) for connecting to a supply line (302) and a control opening (13) for connecting to the supply line (302), wherein the housing (1) defines an inner space (10) extending along a longitudinal axis (L1) and has a partition (14) which, with respect to the longitudinal axis (L1), divides the interior space (10) into an outlet chamber (10A) and a control chamber (10B), wherein the partition (14) has a guide hole (15) which extends between the outlet chamber (10A) and the control chamber (10B);
an electrical coil (2) which is accommodated in the partition (14) and surrounds the guide hole (15);
a servo valve needle (3) which is arranged in the control chamber (10B), is preloaded along the longitudinal axis (L1) into a closed position in which the servo valve needle (3) seals the control opening (13) and can be moved by a magnetic field which can be generated by the coil (2), into an open position in which the servo valve needle (3) exposes the control opening (13) and abuts the partition (14), wherein the servo valve needle (3) has a connecting channel (33) which connects the control chamber (10B) to the guide hole (15) in the open position of the servo valve needle (3); and
a main valve needle (4) which is movably guided in the guide hole (15) along the longitudinal axis (L1), is preloaded along the longitudinal axis (L1) into a closed position in which the main valve needle (4) seals the outlet opening (12), and, when the servo valve needle (3) is arranged in its open position, can be moved by the magnetic field which can be generated by the coil (2), into an open position in which the main valve needle (4) exposes the outlet opening (12).