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US 2025/0116265 A1Published application
Reciprocating compressor
AssigneeLG Electronics Inc.
InventorKyoungjun PARK
Life of this patent
Estimating the term…
Abstract
A reciprocating compressor includes a shell, a driving motor, a drive shaft, a piston, a cylinder, a valve plate, a suction valve, and a suction valve stopper. The suction valve stopper is made of an elastic member and disposed between the suction valve and the cylinder to support a reed valve portion of the suction valve and limit an opening amount of the reed valve portion. The opening amount is controlled to increase cooling power in a high load operation area and prevent dead volume to thereby increase energy efficiency in a low load operation area and a high load operation area.
Claims24
A reciprocating compressor comprising:
- a shell that defines an inner space therein;
- a driving motor disposed in the inner space of the shell, the driving motor comprising a rotor;
- a drive shaft coupled to the rotor of the driving motor;
- a piston coupled to the drive shaft and configured to perform a reciprocating motion;
- a cylinder that accommodates the piston and defines a compression chamber together with the piston inserted in the cylinder, wherein the piston is configured to perform the reciprocating motion relative to the cylinder;
- a valve plate that is coupled to a front-end surface of the cylinder and faces the piston, the valve plate defining a suction port and a discharge port that are configured to fluidly communicate with the compression chamber;
- a suction valve disposed between the cylinder and the valve plate, the suction valve comprising a reed valve portion configured to open and close the suction port based on an end of the reed valve portion moving relative to another end of the reed valve portion;
- and
- a suction valve stopper disposed between the suction valve and the cylinder, the suction valve stopper being made of an elastic member and configured to interfere with the reed valve portion to thereby limit an opening amount of the reed valve portion.
6 more elements
A reciprocating compressor comprising:
- a piston;
- a cylinder that accommodates the piston and defines a compression chamber together with the piston inserted in the cylinder, wherein the piston is configured to reciprocate relative to the cylinder;
- a valve plate that is coupled to a front-end surface of the cylinder and faces the piston, the valve plate defining a suction port and a discharge port that are configured to fluidly communicate with the compression chamber;
- a suction valve comprising (i) a valve fixing portion disposed between the cylinder and the valve plate and coupled to the cylinder and (ii) a reed valve portion configured to open and close the suction port, the reed valve portion having a first end extending from the valve fixing portion and a second end configured to open and close the suction port;
- and
- a suction valve stopper disposed between the suction valve and the cylinder and configured to limit an opening amount of the suction valve,
- wherein the suction valve stopper comprises:
- a stopper fixing portion coupled to the cylinder together with the valve fixing portion, and
- at least one stopper portion that extends from the stopper fixing portion toward a radial center of the suction port and at least partially overlaps with the reed valve portion along a reciprocating direction of the piston.
6 more elements
A reciprocating compressor comprising:
- a piston;
- a cylinder that accommodates the piston and defines a compression chamber together with the piston inserted in the cylinder, wherein the piston is configured to reciprocate relative to the cylinder;
- a valve plate that is coupled to a front-end surface of the cylinder and faces the piston, the valve plate defining a suction port and a discharge port that are configured to fluidly communicate with the compression chamber;
- a suction valve comprising (i) a valve fixing portion disposed between the cylinder and the valve plate and coupled to the cylinder and (ii) a reed valve portion configured to open and close the suction port, the reed valve portion having a first end extending from the valve fixing portion and a second end configured to open and close the suction port;
- and
- at least one suction valve stopper disposed between the suction valve and the cylinder and configured to limit an opening amount of the suction valve,
- wherein the at least one suction valve stopper is fixed to the front-end surface of the cylinder.
4 more elements
Dependencies are inferred from the claim text.