US 12,188,461 B2
Compression apparatus and filling station comprising such an apparatus
Cyril Benistand-Hector, Sassenage (FR); and Guillaume Petitpas, Sassenage (FR)
Assigned to L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude, Paris (FR)
Appl. No. 17/800,995
Filed by L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, Paris (FR)
PCT Filed Oct. 21, 2020, PCT No. PCT/EP2020/079586
§ 371(c)(1), (2) Date Aug. 19, 2022,
PCT Pub. No. WO2021/164901, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 2001726 (FR), filed on Feb. 21, 2020.
Prior Publication US 2023/0085780 A1, Mar. 23, 2023
Int. Cl. F04B 15/08 (2006.01); F04B 3/00 (2006.01); F04B 7/04 (2006.01); F04B 23/02 (2006.01); F04B 53/12 (2006.01); F04B 53/16 (2006.01)
CPC F04B 15/08 (2013.01) [F04B 3/00 (2013.01); F04B 7/04 (2013.01); F04B 23/023 (2013.01); F04B 53/12 (2013.01); F04B 53/162 (2013.01); F04B 2015/0814 (2013.01); F04B 2015/082 (2013.01); F04B 2015/0824 (2013.01); F04B 2015/0826 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A fluid-compression apparatus with multiple compression stages, comprising:
a first compression chamber;
a second compression chamber;
an intake system that communicates with the first compression chamber and is configured to allow the admission of fluid to be compressed into said first compression chamber;
a transfer system that, in an open configuration, is configured to allow the transfer of fluid from the first compression chamber to the second compression chamber;
a mobile piston for ensuring the compression of the fluid in the first and second compression chambers; and
a discharge orifice that communicates with the second compression chamber and is configured to allow the outlet of compressed fluid, the piston being mobile in a translational movement in a longitudinal direction, wherein:
the first compression chamber is delimited by a fixed lower cavity,
a lower end of the piston and a first sealing system formed between the piston and a wall of the lower cavity,
the second compression chamber is delimited by a fixed upper cavity, an upper end of the piston, and a second sealing system formed between the piston and a wall of the upper cavity,
when the apparatus is in an operating configuration, a longitudinal direction of translation of the piston is vertical,
the intake system is situated at a lower end of the apparatus below the discharge orifice, which is situated in an upper part of the apparatus, and
the discharge orifice is situated above the transfer system.