US 2003/0147759 A1 · Linear compressor

Abstract

A linear compressor provided with an anti-collision device for preventing a piston from coming into collision with a cylinder head and/or a suction valve even when the piston moves past its upper dead center position. The anti-collision device prevents the piston of the compressor from being brought into collision with the cylinder head and/or the suction valve even when the piston moves past its upper dead center position during an operation of the compressor. Therefore, it is possible to prevent the piston and the cylinder head having the suction valve, from breaking. The linear compressor having the anti-collision device of this invention almost completely prevents a collision of the piston with the suction valve or the cylinder head during an operation, thus minimizing the gap between the piston and the cylinder head when the piston reaches its upper dead center position. Therefore, the linear compressor of this invention has improved operational performance and improved volumetric efficiency without being enlarged in its size.

Claims19

Dependent claims

A linear compressor, comprising:

a cylinder block having a first surface with a cylinder receiving a piston while allowing the piston to linearly reciprocate in said cylinder;
a cylinder head assembled with a second surface of the cylinder block and used to guide inlet and outlet refrigerant;
a movable member connected to the piston and provided with a magnet arranged around the cylinder;
a drive unit reciprocating both the piston and the movable member;
and
an anti-collision device set between the first surface of the cylinder block and an end of the movable member, and used to prevent the piston from moving past an upper dead center position to prevent the piston from colliding with the cylinder head.

3 more elements

A linear compressor with a cylinder block, a cylinder connected to a first surface of the cylinder block and receiving a piston while allowing the piston to linearly reciprocate in the cylinder, a cylinder head assembled with a second surface of the cylinder block and used to guide inlet and outlet refrigerant, a movable member connected to the piston and arranged around the cylinder;

and a drive unit reciprocating both the piston and the movable member, the linear compressor comprising:
an anti-collision device set between the first surface of the cylinder block and an end of the movable member and used to prevent the piston from moving past an upper dead center position to prevent the piston from colliding with the cylinder head, wherein the anti-collision device includes a first anti-collision unit, which elastically deforms during a collision with the movable member, when the piston moves past the upper dead end position and a second anti-collision unit, different from the first anti-collision unit, which damps the movement of the movable member after the first anti-collision unit is displaced a predetermined amount by the collision with the movable member.

Dependencies are inferred from the claim text.

Linear compressor

Life of this patent

Linear compressor

Life of this patent

Abstract

Claims19