US 11,754,071 B2
Hermetic compressor including an intermediate plate having a curved suction passage
Seokhwan Moon, Seoul (KR); Seoungmin Kang, Seoul (KR); and Jinung Shin, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Oct. 12, 2021, as Appl. No. 17/499,313.
Application 17/499,313 is a continuation of application No. 15/926,254, filed on Mar. 20, 2018, granted, now 11,174,865.
Claims priority of application No. 10-2017-0034892 (KR), filed on Mar. 20, 2017.
Prior Publication US 2022/0025886 A1, Jan. 27, 2022
Int. Cl. F04C 15/06 (2006.01); F04C 23/00 (2006.01); F04C 18/10 (2006.01); F04C 29/02 (2006.01); F04C 18/356 (2006.01); F04C 18/344 (2006.01)
CPC F04C 15/06 (2013.01) [F04C 18/10 (2013.01); F04C 18/3562 (2013.01); F04C 18/3564 (2013.01); F04C 23/008 (2013.01); F04C 29/023 (2013.01); F04C 18/344 (2013.01); F04C 2240/30 (2013.01); F04C 2240/40 (2013.01); F04C 2240/50 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A hermetic compressor comprising:
a casing;
a cylinder located inside of the casing and coupled to the casing, the cylinder defining a compression space surrounded by an inner circumferential surface of the cylinder;
a first bearing located at an upper side of the cylinder;
a second bearing located at a lower side of the cylinder;
a roller located in the compression space and configured to rotate along an eccentric path within the compression space to vary a volume of the compression space based on the rotation of the roller with respect to the cylinder;
a vane that is located in the roller, that is configured to rotate with respect to the cylinder based on the rotation of the roller, and that is configured to, based on the rotation of the roller, protrude toward and retract from the inner circumferential surface of the cylinder, the vane dividing the compression space into a plurality of compression chambers;
an inlet port defined at the first bearing and configured to communicate with the compression space;
a refrigerant suction pipe coupled to the inlet port; and
an intermediate plate located between the cylinder and the inlet port, the intermediate plate defining a suction passage configured to communicate with the inlet port and the compression space,
wherein a sectional area of the suction passage increases along a counter rotational direction of the roller toward a contact point between the inner circumferential surface of the cylinder and an outer circumferential surface of the roller,
wherein the suction passage has:
an outer peripheral surface, and
an inner peripheral surface that is spaced apart from the outer peripheral surface in a radial direction, the inner peripheral surface having a curved shape that extends from a first end of the suction passage to a second end of the suction passage along a circumferential direction of the cylinder,
wherein the inner peripheral surface and the outer peripheral surface of the suction passage extend along the counter rotational direction of the roller from the second end of the suction passage toward the contact point between the inner circumferential surface of the cylinder and the outer circumferential surface of the roller, and
wherein the inner peripheral surface of the suction passage is configured to be located outside of the outer circumferential surface of the roller in the radial direction based on the roller rotating from the first end of the suction passage to the second end of the suction passage.