Compressor and manufacturing method thereof
AssigneeLG Electronics Inc.
InventorDonghan Kim
Life of this patent
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Abstract
A compressor and a method of manufacturing the same are disclosed. The compressor includes a piston having a cylindrical shape and having formed therein a suction space, in which refrigerant gas is sucked, and a cylinder having, as a space formed therein, formed therein a compression space, in which refrigerant gas is compressed, by reciprocation of the piston in an axial direction. A gas inflow passage having one side communicating with a gas pocket outside the cylinder and the other side communicating with a space formed in the cylinder is formed in the cylinder, and the piston includes a plurality of fine irregularities formed in an outer circumferential surface of a guide facing the cylinder and provided at a position corresponding to the gas inflow passage.
Claims19
A compressor comprising:
- a piston that defines a suction space configured to suction a refrigerant gas;
- and
- a cylinder that receives the piston and defines a compression space that is configured to compress, based on reciprocation of the piston in an axial direction, the refrigerant gas therein,
- wherein the cylinder defines a gas inflow passage that fluidly communicates with a gas pocket at a side of the gas inflow passage outside the cylinder and that fluidly communicates with a cylinder space defined in the cylinder at an opposite side of the gas inflow passage,
- wherein the piston comprises a guide having an outer circumferential surface configured to face the cylinder and a plurality of irregularities that are (i) defined at the outer circumferential surface of the guide and (ii) disposed to correspond to the gas inflow passage of the cylinder, and
- wherein the plurality of irregularities have at least two rows and at least two columns to define a matrix arrangement of the plurality of irregularities.
A compressor comprising:
- a piston that defines a suction space configured to suction a refrigerant gas, the piston being configured to move to perform a compression cycle and a suction cycle;
- and
- a cylinder that receives the piston and defines a compression space that is configured to compress, based on reciprocation of the piston in an axial direction, the refrigerant gas therein,
- wherein the cylinder defines a gas inflow passage that fluidly communicates with a gas pocket at a side of the gas inflow passage outside the cylinder and that fluidly communicates with a cylinder space defined in the cylinder at an opposite side of the gas inflow passage,
- wherein the piston comprises a guide having an outer circumferential surface configured to face the cylinder and a plurality of irregularities that are (i) defined at the outer circumferential surface of the guide and (ii) disposed to correspond to the gas inflow passage of the cylinder,
- wherein the plurality of irregularities are disposed in a row in the axial direction, and
- wherein, based on reciprocation of the piston, at least one of the plurality of irregularities overlaps the gas inflow passage of the cylinder in a radial direction.
A compressor comprising:
- a piston that defines a suction space configured to suction a refrigerant gas;
- and
- a cylinder that receives the piston and defines a compression space that is configured to compress, based on reciprocation of the piston in an axial direction, the refrigerant gas therein,
- wherein the cylinder defines a gas inflow passage that fluidly communicates with a gas pocket at a side of the gas inflow passage outside the cylinder and that fluidly communicates with a cylinder space defined in the cylinder at an opposite side of the gas inflow passage,
- wherein the piston comprises a guide having an outer circumferential surface configured to face the cylinder and a plurality of irregularities that are (i) defined at the outer circumferential surface of the guide and (ii) disposed to correspond to the gas inflow passage of the cylinder,
- wherein the plurality of irregularities are disposed in the axial direction, and each of the plurality of irregularities is recessed at the outer circumferential surface of the guide and extends in a circumferential direction of the guide to have a circular band shape, and
- wherein each of the plurality of irregularities have a width of 100 micrometers to 3 millimeters and a depth of 1 micrometer to 15 micrometers.
Dependencies are inferred from the claim text.