US 12,146,584 B2
Solenoid valve and vehicle gas cylinder valve having the solenoid valve
Guanghui Tan, Henan (CN); Shaowen Hu, Henan (CN); Lin Jiang, Henan (CN); Yinchun Liu, Henan (CN); and Kaige He, Henan (CN)
Assigned to YAPP AUTOMOTIVE PARTS (KAIFENG) CO., LTD., Henan (CN)
Filed by YAPP AUTOMOTIVE PARTS (KAIFENG) CO., LTD., Henan (CN)
Filed on Jun. 29, 2023, as Appl. No. 18/344,806.
Claims priority of application No. 202210774703.4 (CN), filed on Jul. 1, 2022.
Prior Publication US 2024/0003463 A1, Jan. 4, 2024
Int. Cl. F16K 31/40 (2006.01); F17C 13/04 (2006.01)
CPC F16K 31/408 (2013.01) [F17C 13/04 (2013.01); F17C 2201/0104 (2013.01); F17C 2201/056 (2013.01); F17C 2205/0323 (2013.01); F17C 2270/0168 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A solenoid valve, comprising a casing, a pilot head, a main valve seat, and a pilot valve core, wherein the pilot head and the main valve seat are coaxially arranged in the casing up and down along a central axis of the solenoid valve, an upper end of the main valve seat is provided with a main valve port, an upper end of the pilot head is provided with a pilot valve port, a release hole is provided in the pilot head, and a pilot head upper chamber, a slidably-sealed structure, and a pilot head lower chamber are arranged between the pilot head and the casing, wherein an outer peripheral surface of the casing is provided with a clearance fit surface, the clearance fit surface is configured for clearance fit with a solenoid valve installation passage to form a bypass gas passage between the casing and the solenoid valve installation passage, a lower portion of the bypass gas passage communicates with a high-pressure gas inlet port on the solenoid valve installation passage, the casing is provided with an upper casing ventilation hole and a lower casing ventilation hole, the upper casing ventilation hole communicates with an upper portion of the bypass gas passage and the pilot head upper chamber, the lower casing ventilation hole communicates with the lower portion of the bypass gas passage and the pilot head lower chamber, an airflow damping structure for slowing down a gas flow velocity is provided on the upper casing ventilation hole and/or the clearance fit surface, the airflow damping structure on the upper casing ventilation hole is configured to be a cross-sectional surface with a cross-sectional area not greater than a minimum cross-sectional area in the release hole, so that the upper casing ventilation hole is able to slow down a cross-sectional area of the gas flow velocity, and the airflow damping structure of the clearance fit surface is located between the upper casing ventilation hole and the lower casing ventilation hole and is configured to fit with a corresponding structure of the solenoid valve installation passage to slow down the gas flow velocity.