Reciprocating compressor
AssigneeLG Electronics Inc.
InventorsSung-Gi Kim, Dong-Han Kim
Life of this patent
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Abstract
A reciprocating compressor comprises: a cylinder having an oil pocket on an inner circumferential surface of a piston insertion hole for inserting a piston with a predetermined width and depth; and a piston having a bearing portion protruding so as to slidably contact an inner circumferential surface of the piston insertion hole, and inserted into the piston insertion hole of the cylinder, wherein the bearing portion is formed to have a length shorter than that of the oil pocket of the cylinder. Accordingly, a frictional loss between the cylinder and the piston is reduced.
Claims23
A reciprocating compressor comprising:
- a cylinder having an inner circumferential surface that forms a piston insertion hole the inner circumferential surface including an oil pocket portion;
- and
- a piston positioned in the piston insertion hole, the piston having a bearing portion slidably in contact with the inner circumferential surface of the cylinder,
- wherein the length of the bearing portion is less than the length of the oil pocket portion.
A reciprocating compressor comprising:
- a cylinder having an inner circumferential surface forming a piston insertion hole, the inner circumferential surface including an oil pocket;
- and
- a piston positioned in the piston insertion hole, the piston having a bearing portion slidably in contact with the inner circumferential surface of the cylinder and having a pumping portion separated from the bearing portion by a gap.
A reciprocating compressor comprising:
- a cylinder having an inner circumferential surface forming a piston insertion hole, the inner circumferential surface including a plurality of oil pockets;
- and
- a piston positioned in the piston insertion hole and slidably in contact with the inner circumferential surface of the cylinder,
- wherein the piston comprises:
- a bearing portion and a support portion, wherein the bearing portion and the support portion are separated by a gap, and wherein the plurality of oil pockets are positioned, at least in part, between the bearing portion and the support portion.
A reciprocating compressor comprising:
- a cylinder having an inner circumferential surface forming a piston insertion hole, the inner circumferential surface including a plurality of oil pockets, wherein adjacent oil pockets are separated by a separating portion;
- and
- a piston positioned in the piston insertion hole and slidably in contact with the inner circumferential surface of the cylinder, the piston including a bearing portion and a support portion separated by a gap, and wherein the plurality of oil pockets are positioned, at least in part, between the bearing portion and the support portion.
Dependencies are inferred from the claim text.