Discharge valve of a hermetic compressor using stopper and weight driven disc valve

A discharge valve for a hermetic compressor, comprising:

• a valve plate disposed on a cylinder head of the hermetic compressor allowing intake and discharge of refrigerant according to reciprocal movement of a piston, the valve plate having a discharge hole formed therein through which refrigerant is discharged;
• a non-curved in cross-section disc valve disposed above the discharge hole of the valve plate, being raised or lowered by the pressure of the refrigerant caused by the reciprocal movement of the piston;
• and
• a non-curved in cross-section stopper disposed above the disc valve, for limiting height to which the disc valve may be raised to a predetermined range, wherein the stopper is connected to the valve plate by a plurality of guiding pins with an open space there between defined by the supporting members extending downward from two ends of the stopper, the supporting members guiding the disc valve by line-contact between the supporting member and the disc valve.

A hermetic compressor having a cylinder head and a piston for providing sequentially intake and discharge of a refrigerant during an intake/discharge cycle, adjacent to a discharge valve, the discharge valve comprising:

• a) a valve plate disposed on the cylinder head including a discharge hole formed therein for discharge of the refrigerant;
• b) a non-curved in cross-section disc valve disposed adjacent the discharge hole of the valve plate, so as to cover the discharge hole during a portion of the intake/discharge cycle depending on the pressure developed within the cylinder head by the piston;
• and
• c) a non-curved in cross-section stopper, adjacent to the disc valve and spaced apart from the discharge hole, including a plurality of guides for guiding orientation of the disc valve and a stopper portion for limiting to a predetermined range a reciprocal motion of the disc valve between the discharge and the stopper portion, wherein the stopper is connected to the valve plate by a plurality of guides with an open space therebetween defined by the guides being disposed upright around the discharge hole of the valve plate, the plurality of guides guiding the disc valve by point-contact between the plurality of guides and the disc valve.

A hermetic compressor having a cylinder head and a piston for providing sequentially intake and discharge of a refrigerant during an intake/discharge cycle, adjacent to a discharge valve, the discharge valve comprising:

• a) a valve plate disposed on the cylinder head including a discharge hole formed therein for discharge of the refrigerant;
• b) a non-curved in cross-section disc valve disposed adjacent the discharge hole of the valve plate, so as to cover the discharge hole during a portion of the intake/discharge cycle depending on the pressure developed within the cylinder head by the piston;
• and
• c) a non-curved in cross-section stopper, adjacent to the disc valve and spaced apart from the discharge hole, including a plurality of guides for guiding orientation of the disc valve and a stopper portion for limiting to a predetermined range the reciprocal motion of the disc valve between the disc hole and the stopper portion, wherein the stopper is connected to the valve plate by supporting members extending downward from two ends of the stopper, the supporting members defining an open space and guiding the disc valve by line-contact between the supporting member and the disc valve.