US 12,129,842 B2
Reciprocal compressor and refrigerator including the same
Jinsu In, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Sep. 19, 2022, as Appl. No. 17/947,259.
Application 17/947,259 is a continuation of application No. PCT/KR2022/013652, filed on Sep. 13, 2022.
Claims priority of application No. 10-2022-0003614 (KR), filed on Jan. 10, 2022.
Prior Publication US 2023/0220841 A1, Jul. 13, 2023
Int. Cl. F04B 39/00 (2006.01); F04B 39/12 (2006.01)
CPC F04B 39/0005 (2013.01) [F04B 39/125 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A reciprocal compressor comprising:
a cylinder including a refrigerant inlet, a refrigerant outlet, and a cylinder upper wall;
a piston inside the cylinder and including a piston upper wall forming a compression chamber in the cylinder between the piston upper wall and the cylinder upper wall;
an elastic cover between the piston upper wall and the cylinder upper wall; and
a cam mechanism including a cam protrusion configured to push and deform the elastic cover into a first state in which the elastic cover is apart from the piston upper wall to reduce a volume of the compression chamber when the piston is moved to a top dead center and to restore the elastic cover into a second state in which the elastic cover is closer to the piston upper wall than in the first state when the piston is moved to a bottom dead center.