US 12,078,164 B2
Reciprocating compressor with a jacket around the piston rod
Manjunatha M. Chandrashekar, Bengaluru (IN)
Assigned to Nuovo Pignone Technologie SRL, Florence (IT)
Appl. No. 17/997,855
Filed by NUOVO PIGNONE TECNOLOGIE SRL, Florence (IT)
PCT Filed Apr. 23, 2021, PCT No. PCT/EP2021/025153
§ 371(c)(1), (2) Date Nov. 3, 2022,
PCT Pub. No. WO2021/223909, PCT Pub. Date Nov. 11, 2021.
Claims priority of application No. 102020000009730 (IT), filed on May 4, 2020.
Prior Publication US 2023/0151809 A1, May 18, 2023
Int. Cl. F04B 53/00 (2006.01); F04B 39/00 (2006.01); F04B 39/12 (2006.01); F04B 53/14 (2006.01); F04B 53/16 (2006.01)
CPC F04B 53/007 (2013.01) [F04B 39/0005 (2013.01); F04B 39/0022 (2013.01); F04B 39/122 (2013.01); F04B 39/126 (2013.01); F04B 53/143 (2013.01); F04B 53/164 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A reciprocating compressor, comprising:
a piston;
a piston rod mechanically connected to the piston;
a cylinder comprising a compression chamber slidingly housing the piston, the cylinder comprising an opening through which the piston rod is arranged to slide along an axis of translation between a head-side position and a crank-side position; and
a jacket arranged around the piston rod, the jacket comprising a piston-side end sealingly attached to the piston and a cylinder-side end sealingly attached to the cylinder to seal the compression chamber,
wherein the cylinder has a wall that comprises an annular recess located around the hole to house part of the jacket when the piston is in the head-side position.